KR101258911B1 - Variable speed pumping package control system having energy saving, protection equipment and prevention accident - Google Patents

Abstract

PURPOSE: A variable flow pump control system with an energy-saving function, an equipment protective function, and an accident prevention function is provided to confirm a pump controlling condition and an operating state at one go with a panel PC installed in a local control panel in emergency, thereby rapidly repairing and providing A/S. CONSTITUTION: A variable flow pump control system with an energy-saving function, an equipment protective function, and an accident prevention function comprises an in-situ pump package(110), a local control panel(120), a panel PC(130), a central monitoring panel(20), and a smart terminal(30). The in-situ pump package composed of a variable flow pump, valves, and sensors supplies or recovers fluid of a supply source to/from a load side according to control signals. The local control panel receives temperature, pressure, a flow rate, an equipment state, an equipment emergency signals from the in-situ pump package, transmits the same to the panel PC, inform the central monitoring panel through a communication network, and controls the pump and the valves of the in-situ pump package according to the control signals of the central monitoring panel or panel PC. Exclusive S/W including a control logic for operating the in-situ pump package is installed in the panel PC. The central monitoring panel displays an operated state of equipment so that an operator can monitor, transmits the manipulation of the operator through the communication network to the local control panel, and transmits an operated state of a site to the smart terminal of the operator. A remote-control application for a remote control is installed in the smart terminal so that the smart terminal is connected to the central monitoring panel. [Reference numerals] (102) Communication network; (110) In-situ pump package; (120) Local control panel; (130) Panel PC; (140) Source; (20) Central monitoring panel; (30) Smart terminal; (40) Load;

Description

VARIABLE SPEED PUMPING PACKAGE CONTROL SYSTEM HAVING ENERGY SAVING, PROTECTION EQUIPMENT AND PREVENTION ACCIDENT}

The present invention relates to a flow rate pump control system for controlling a flow rate at a constant temperature and pressure in a heat exchanger (heating) or a freezer (cooling), hot water supply, water supply, drainage, sewage, water treatment, secondary pump equipment, etc. It is possible to control the pump inverter, motor valve, etc. according to the load by receiving status signals such as operation status (start / stop), measured values (temperature, flow rate, pressure, etc.), abnormal alarm (trip / alarm) from the measuring instrument. The present invention relates to a variable flow pump control system with energy saving, equipment protection and accident prevention to maximize the efficiency of the pump even under severe load conditions.

In general, air conditioning and heating systems are divided into a constant flow rate system and a variable flow rate system. The constant flow rate system is a system in which the total flow rate circulated through a pump is always circulated constantly regardless of load fluctuations. It is a system where the flow rate returned to the pump changes frequently. The variable flow rate system uses a variable speed pump to control the rotational speed or several pumps to operate the logarithmic control.

As a conventional fluid flow rate control system, a "oil flow rate control apparatus and a control method of a booster pump system" registered under Patent Registration No. 10-1131394 are known. The known oil flow rate control device uses a lead pump and a lag pump installed in parallel to adjust the fluid pressure of the discharge pipe by controlling the electric frequency supplied to the lead pump according to the fluid pressure of the discharge pipe.

However, the conventional oil flow control system has a relatively high efficiency even when the oil flow is controlled using an inverter for the change of 40-100% of the required load due to the characteristics of the pump operation, but under the operating conditions when the load is reduced to 40% or less. The performance of the pump suddenly drops and the pump is stopped or the surplus flow rate is bypassed (By-pass), thereby reducing the efficiency of the heat source cycle. In addition, the conventional oil flow control system has a problem that it is difficult to control the site because the remote control and monitoring function is insufficient, there is no self-diagnostic function and insufficient equipment protection and fail to prevent failure.

The present invention has been made to solve the above problems of the prior art, the object of the present invention is not only to monitor and control in the central monitoring panel and difficult access site, but also to supply the required flow rate according to the load conditions It is to provide energy flow pump control system with energy saving, equipment protection and accident prevention function to save energy and to ensure safety even in the event of malfunction of controller through self-diagnosis function.

Another object of the present invention is to provide a variable flow pump control system that can reduce the energy consumption by integrating the operating time and load usage of the pump and analyzing the energy consumption pattern.

Another object of the present invention includes a mobile communication technology for enabling the remote monitoring and control of various control devices using a smartphone or a tablet PC, an abnormal state during abnormal operation by analyzing the pump operating state and measurement instrument values The self-diagnosis function can be used to restore the operating state to protect the equipment and provide an oil displacement pump control system that can prevent accidents.

In order to achieve the above object, the system of the present invention comprises an on-site pump package consisting of a flow rate pump, a valve, and sensors installed together with a field pipe to supply and return the fluid of the supply source to the load side according to a control signal; It receives the temperature, pressure, flow rate, equipment status and equipment alarm from the field pump package and transmits it to the panel PC, reports it to the central monitoring panel through the communication network, according to the control command of the central monitoring panel or the control command of the panel PC. A field control panel for controlling the pump and the valve; Panel PCs with dedicated software, including control logic to drive field pump packages; A central monitoring panel expressing the operation status of the facility to monitor the operator and transferring the operation of the operator to the site control panel through a communication network, and transmitting the operation status of the site to the smart terminal of the operator; And it is equipped with a remote management app for remote control is characterized in that consisting of a smart terminal connected to the central monitoring panel through a communication network.

The central monitoring panel is implemented as a web (WEB) server and a DB server, and is connected to the site control panel and the panel PC through an internet based network module to display the operation status of the site as a central monitor, and is mounted on the operator's smart terminal. Communicates with the management app to display the operation status of the field equipment on the operator's smart terminal, and receives the operator's operation from a remote site and transmits it to the field control panel, which is a programmable logic controller (PLC) or direct digital controller (DDC). It is implemented in) and controls the field pump package according to the control command of the panel PC or the central monitoring panel, and the panel PC is implemented in the form of a touch screen to execute the installed dedicated program to display the facility status of the site on the monitor and the operator. Input touch operation to select operation mode or set various parameter values Perform the operation mode and the self-diagnostic mode of operation.

The oil permeation pump control system according to the present invention can monitor and control various devices of the oil permeation pump package remotely from a smartphone or a tablet PC, and control the oil permeation pump using the end pressure and the end differential pressure at the load side, compared to the conventional art. Greater energy savings can be achieved. That is, according to the present invention, by installing a proportional control motor valve and a pressure sensor in the bypass pipe at the front end and the rear end of the load side or the flow rate pump at the load side to ensure the minimum rotational flow rate of the pump, even in overload operation or no-load operation Energy efficiency can be saved by maximizing efficiency.

In addition, the oil flow pump control system according to the present invention can check the pump control status and operation state at a time through the panel PC installed in the field control panel in case of an emergency in the field, so that emergency recovery and A / S are possible, and check the equipment of the field facilities. This facilitates the protection of equipment and the prevention of safety accidents.

1 is a schematic diagram showing the overall configuration of the oil displacement pump control system according to the present invention,
2 is a schematic diagram showing a data processing configuration of a field control panel according to the present invention;
3 is an example of a pump package applying the present invention to a heat exchanger,
4 is an example of the driving scheme of the pump package shown in FIG.
5 is an operation example of the oil quantity control system shown in FIG.
6 is an example of applying the present invention to a water-cooled EHP,
7 is an example of a ventilation package applying the present invention to ventilation,
8 is a control flowchart when operating in a general operation mode in a field control panel;
9 is a control flowchart of operation in the energy operation mode in the field control panel;
10 is a control flowchart of operation in the diagnostic operation mode in the field control panel.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings. The following examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention.

Figure 1 is a schematic diagram showing the overall configuration of the oil displacement pump control system according to the present invention.

As shown in FIG. 1, the oil quantity pump control system according to the present invention includes a oil quantity pump, a valve, and sensors installed together with a pipe of a site 10 to load the fluid of the supply source 140 according to a control signal. On-site pump package 110 to supply and withdraw to 40), and receives the temperature, pressure, flow rate, equipment status, alarm information and the like from the field pump package 110 to the panel PC 130 and the communication network 102 Report to the central monitoring panel 20 through the field control panel 120 and the field pump to control the pump and valves of the field pump package 110 according to the control command of the central monitoring panel 20 or the control command of the panel PC 130, Panel PC 130 equipped with a dedicated software including a control logic for operating the package 110, and displays the operation status of the facility on the site for the operator to monitor and the operator's operation through the communication network 102 Forward to 120 And it consists of a central monitoring panel 20 for transmitting the operation status of the site to the smart terminal 30 of the manager.

Referring to FIG. 1, the field pump package 110 may be implemented in various ways according to an application object. In the case of an air conditioning system, a flow rate and various sensors such as a temperature sensor and a pressure sensor installed in pipes and pipes may be measured. Various measuring instruments, such as a flow meter, a voltmeter, an ammeter, and a flow rate pump for controlling the fluid flow of piping, a valve, a differential pressure valve, an inverter for driving a pump motor, and the like. The supply source 140 is a boiler for supplying hot water or the like in the case of heating, and may be implemented as an incidence tower in the case of cooling.

The field control panel 120 is implemented as a programmable logic controller (PLC) or a direct digital controller (DDC) to control the field pump package 110 according to the control command of the panel PC 130 or the central monitoring panel 20, and the panel. PC 130 is preferably implemented in the form of a touch screen to execute the on-board dedicated program to display the status of the facility on the field on the monitor, and receives the operator's touch operation to select the operation mode or set various parameter values . In addition, in the system according to the present invention, the panel PC (130) is equipped with a diagnostic program for self-diagnosing the on-site facilities to perform a self-test, if necessary, to perform a recovery procedure when a failure is detected and to monitor the self-diagnosis results in the central monitoring panel (20). To transmit.

Central monitoring panel 20 is implemented as a WEB server and DB server connected to the site control panel 120 and the panel PC 130 through the Internet-based network module to express the operation status of the site to the central monitor, the operator's smart terminal ( Communicating with the remote management app mounted on the 30) displays the operation status of the field equipment on the operator's smart terminal 30, and receives the operator's operation from the remote site and transmits to the field control panel 120. The smart terminal 30 is implemented as a smart phone or tablet PC, is equipped with a remote management app for remote management and communicates with the central monitoring panel 20 over the wireless Internet.

Such a flow rate pump control package system of the present invention can be applied to a heat exchanger (heating) or a freezer (cooling), hot water supply, water supply, drainage, sewage, water treatment, secondary pump equipment, etc., the operation state (start / stop) from the measuring device ), Receive status signals such as measured values (temperature, flow rate, pressure, etc.), abnormal alarms (trip / alarm), calculate the load in the central control panel under optimal control conditions, and control the control signals through the remote control panel according to the load. By outputting, pump inverter, motor valve, etc. can be controlled to achieve the maximum efficiency of the pump even under load conditions that degrade the performance of the pump.

2 is a schematic diagram showing a data processing configuration of an on-site control panel according to the present invention.

The field control panel 120 according to the present invention is interlocked with the panel PC 130 mounted with a dedicated program including the control logic adopted according to the type of the field pump package 110, as shown in FIG. 127a), one of the energy operation 127b and the diagnostic operation 127c. The normal operation 127a is a general mode for controlling the motor of the pump. The normal operation 127a is controlled by varying the rotational speed of the pump according to the measured value of the pressure sensor installed in the pump operating system. It is a basic operation mode that calculates the required amount of heat on the load side and performs sequential operation. The energy operation 127b is an energy saving mode for controlling the motor of the pump. In addition to the basic operation mode required for the pump operation system, the load is reduced, and the pump is rotated by the measured pressure value of the pressure sensor installed at the end of the load. It is an operation mode that saves energy by lowering the number more than normal operation, and it is an operation mode that saves energy by determining the optimal input quantity and capacity by calculating the load. The diagnostic operation 127c is a diagnostic operation mode for protecting the motor of the pump. When the operation value is abnormal due to unexpected disturbance or abnormality in the piping system in the normal operation or the energy operation mode required for the pump operation system, the normal operation is performed. Alternatively, it is a driving mode that protects the equipment by relaxing the set value of the energy operation mode and prevents an accident by tripping the equipment if the operating value is not restored to normal. The three operation modes mentioned above can be operated alone or in combination as needed, and operate in combination according to the situation such as initial operation of equipment, peak operation, and demand management.

2, the pump package control system in the field is installed in the pipe of the field pump package temperature sensor (IN1) for detecting the temperature of the fluid, and installed in the pipe of the field pump package to detect the pressure of the fluid Pressure sensor (IN2), flow meter (IN3) installed in the pipe of the field pump package to measure the amount of fluid, equipment state unit (IN4) to provide the equipment state of the field pump package, equipment alarm of the field pump package An input unit 121 for receiving data from the equipment alarm unit IN5 providing the input unit, a storage unit 122 storing the input data, a signal conversion unit 123 for converting the stored data into data for operation, and The operation unit 124, the output unit 126 for outputting the equipment operation signal, the equipment stop signal, the inverter signal or the valve opening signal according to the control signal, and the result value calculated by the operation unit PID, PI, high selector and low Selector Sikkim stored in the storage unit the output value according to the control logic and is composed of a well controller 123 to transfer to the output.

Measured values such as temperature sensors, pressure sensors, flow meters, equipment status, equipment alarms, and status signals (IN1 to IN5) of the equipment installed in the field are received through the input unit 121 of the input / output module, and the raw values are stored in the storage unit 122. It converts the signal into a form that can be stored in the calculation and can be operated by the user directly or automatically according to the set value automatically set by the schedule. The result value calculated by the operation is stored in the storage unit 122 and sent to the control unit 125 to correct the result value according to the normal operation, energy operation, and diagnostic operation mode, and transmit the result to the output unit 126. The output unit 126 transmits and controls a signal to the corresponding equipment. At this time, the general operation, energy operation, and diagnostic operation can be selected in plural, since a single operation and a combined operation are possible according to the situation.

In FIG. 2, the input unit 121 is a receiving unit for receiving a state and a measurement signal of an equipment or a measuring device for the purpose of controlling the equipment, and receives a current signal, a voltage signal, a resistance signal, a voltageless contact, a pulse signal, a communication signal, and the like. It is a modular controller that can be expanded.

The storage unit 122 is a secondary storage device (non-volatile memory) for receiving and storing signals from the input unit 121 and output unit 126 and a primary storage device (volatile memory) for storing calculation and control values. Stores the values sent and received for the purpose of controlling.

The signal converter 123 converts the data received from the input unit 121 into a form necessary for calculation and transmits the data to the calculation unit 124, and the calculation unit 124 calculates the data received from the input unit 121 by the function module. And the arithmetic operation to send the result value to the storage unit 122, and stores it and transmits to the controller (125).

The control unit 125 converts the result value calculated by the operation unit 124 into an output value according to the control logic of the PID, PI, high selector and low selector, and stores the result in the storage unit 122. The output unit 126 transmits a state and an output signal of the equipment or the controller for the purpose of controlling the equipment. That is, the output unit 126 transmits the result value received from the control unit 125 as a current signal, a voltage signal, a resistance signal, a voltage-free contact, a pulse signal, a communication signal, and the like in accordance with a signal of the controller. Auxiliary relays, timers, counters, etc. are replaced by direct devices such as IC and Ir to provide sequence control as a basic, and modular type that can be expanded.

The equipment starting unit OU1 connects a contact point in the motor control panel MCCB which is connected to control the motor of the pump, and receives the operation or operation command of the equipment from the output unit. In order to control the motor, it connects the contact in the connected motor control panel (MCCB) and receives the stop or trip command of the equipment from the output.

Inverter signal part OUT3 connects the contact point in the motor control panel (MCCB) which is connected to control the motor of the pump and outputs the output signal (4-20mA, 0-10V) which is changed to analog signal to stop or run the equipment. ) And the valve opening section OUT4 connects the contact point connected to the motor driver of the valve installed to adjust the heat source flow rate of the equipment for the purpose of controlling the temperature on the load side. Receive (ON-OFF, 4-20mA) command from the output. The valve opening part outputs the valve opening (ON-OFF, 4-20mA) command by connecting the contact that is connected to the motor driver of the valve installed to control the flow rate of the equipment in order to secure the flow rate on the pump side. You can also receive from the negative.

The temperature sensor IN1 is an insertion type temperature sensor installed in a pipe, and is a measuring device that measures the temperature of a fluid in the pipe and transmits the measured value (3-wire, 100 kV or 1000 kV) to the input unit 121 in a wired manner. IN2) is an insertion type pressure sensor installed in the pipe and measures the pressure of the fluid in the pipe and transmits the measured value (2-wire, 4-20 mA) to the input unit 121 by wire.

Flow meter (IN3) is an insertion type or clamp type flow meter installed in the pipe and measures the flow rate of the fluid in the pipe and transmits the measured value (2-wire 4-20mA, pulse signal) to the input unit 121 by wire. Status unit (IN4) is connected to the contact point in the motor control panel (MCCB) connected to control the motor of the pump and transmits the operation or operation of the equipment to the input unit 121, the equipment alarm unit (IN5) of the pump In order to control the motor by connecting a contact in the connected motor control control panel (MCCB) transmits whether the trip or failure of the equipment to the input unit 121.

The selective operation unit 127 is an operation mode for controlling the motor of the pump, and sets the combined operation according to the independent operation or priority of the general operation 129a, the energy operation 127b, and the diagnostic operation 127c. . The normal operation 127a is a general mode for controlling the motor of the pump. The normal operation 127a is controlled by varying the rotational speed of the pump according to the measured value of the pressure sensor installed in the pump operating system. It is a basic operation mode that calculates the required amount of heat on the load side and performs sequential operation, and determines the cumulative operation time and operation rate of the pump to rotate operation. The energy operation 127b is an energy mode for controlling the motor of the pump. In addition to the basic operation mode required for the pump operation system, the load is reduced and the rotation speed of the pump is determined by the measured pressure value of the pressure sensor installed at the end side when the load is reduced. It is a driving mode that saves energy by lowering than in normal operation. The diagnostic operation 127c is a diagnostic operation mode for protecting the motor of the pump. When the operation value is abnormal due to unexpected disturbance or abnormality in the piping system in the normal operation or the energy operation mode required for the pump operation system, the normal operation is performed. Alternatively, it is a mode of operation that protects the equipment by relaxing the set value of the energy operation mode and prevents an accident by tripping the equipment if the operation value is not restored to normal.

3 is an example of a pump package applying the present invention to a heat exchanger, FIG. 4 is an example of an operation method of the pump package shown in FIG. 3, and FIG. 5 is an example of a control operation of the oil quantity control system shown in FIG. 3.

The pump package applied to the heat exchanger is designed to supply the heat source to the load end located farthest from the heat source because it is air-conditioned by using a common supply heat source method in a house or officetel designed for a high-rise building and a business building. As a result, 24 hours of operation of pumps often generate noise or waste unnecessary energy in the plumbing.

As shown in FIG. 3, the pump package of the heat exchanger according to the present invention receives the hot water from the main supply pipe (DHWS) and the heat exchanger (HXH-1) for transferring heat for heating, and the main supply pipe ( Hot water reheat heat exchanger (HXH-2) that receives hot water from DHWS and transfers heat for hot water supply, and preheat the feed water with hot water returned from the heat exchanger and hot water reheat heat exchanger and return to the main return pipe (DHWR). Hot water preheating heat exchanger, valve V1 for controlling the water supply of the heating heat exchanger, valve V2 for controlling the water supply of the hot water heat exchanger, the first heating circulation pump P-1, and the second heating circulation pump (P-2), differential pressure valve (DPV), heating temperature sensors (T1, T2) and pressure sensors (P1 ~ P3), the first hot water circulation pump (P-3), the second hot water circulation pump (P-4) ), And hot water temperature sensors (T3, T4).

Referring to FIGS. 3 to 5, in the heating valve control S10, the heating heat exchanger may be controlled by the measurement temperature of the pipe temperature sensor T1 installed in the secondary heating supply pipe HWS of the heating heat exchanger HXH-1. Proportional control of the motor drive control valve (V1) installed in the primary side hot water return pipe (DHWR) of HXH-1) maintains the secondary side heating water (HWS) supply temperature constant.

In hot water valve control (S20), the primary side hot water of the hot water supply heat exchanger (HXH-2) is measured by the measurement temperature of the pipe temperature sensor (T3) installed in the secondary hot water supply pipe (hot water) of the hot water heat exchanger (HXH-2). Proportional control of the motor drive control valve (V2) installed in the return pipe (DHWR) maintains a constant supply temperature of the secondary hot water supply (water supply).

In the heating circulation pump control S30, two secondary heating circulation pumps P-1 and P-2 of the heating heat exchanger HXH-1 are operated in lead / lag, respectively. The operation of the pump is performed by sequential operation by calculating the required amount of heat on the load side based on the measured values of the flowmeters F1 and the inlet / outlet temperature differences T1 and T2.

In the hot water supply circulation pump control S40, two secondary hot water supply circulation pumps P-3 and P-4 of the hot water supply heat exchanger HXH-2 are respectively operated as lead / standby.

In the differential pressure control valve control (S50), the secondary side heating supply and the return differential pressure control valve (DPV) of the heating heat exchanger (HXH-1) provides a differential pressure for securing a minimum flow rate of the heating circulation pumps (P-1, P-2). Set to drive or close. The differential pressure of the valve (DVP) is set in consideration of the pump's operating efficiency.If the set differential pressure is exceeded, it is closed and the flow rate is bypassed by the differential pressure only when the set differential pressure is lowered. To protect the pump.

In the heating heat exchanger general operation S60, the secondary side heating circulation pump P-1 of the heating heat exchanger HXH-1 is started. The rotation speed is varied and controlled by the measured pressure of the pipe pressure sensor P1 provided in the heating water discharge pipe of the heating circulation pump P-1. At this time, the primary heating valve V1 of the heating heat exchanger HXH-1 is controlled to be OPEN.

In hot water supply heat exchanger general operation S70, the secondary side hot water circulation pump P-3 of the hot water supply heat exchanger HXH-2 is started. At this time, the primary hot water supply valve V2 of the hot water supply heat exchanger HXH-2 is controlled to be OPEN.

In sequential operation S80, as shown in FIG. 4, the pump is started / stopped by a sense of increasing load in a predetermined order, and in the rotate operation S90, according to the cumulative rate of operation time as shown in FIG. Start / stop the pump. Referring to FIG. 4, in the sequential operation, the first pump is the lead pump and the second pump is the pump. In the rotate operation, the first pump and the second pump alternately operate according to the accumulation of the lamp operation time.

6 is an example in which the present invention is applied to a water-cooled electric heat pump (EHP).

The pump package applied to the water-cooled EHP is designed to supply the heat source to the load end located farthest from the heat source because the pump package applied to the ultra high-rise house or officetel and the business building use the co-supply heat source method. Because of the difficulty, it is often the result of running a 24-hour pump to generate noise or waste unnecessary energy in the household piping.

As shown in FIG. 6, the water-cooled EHP (Electric Heat Pump) to which the present invention is applied includes a cooling tower, a cooling water circulation pump, a differential pressure valve, a temperature sensor, a water-cooled EHP, and calculates a load amount under optimal control conditions, and according to the load amount. Output the control signal through the remote control panel to control the pump inverter, motor valve, etc. can achieve the maximum efficiency of the pump under load conditions that reduce the performance of the pump.

7 is an example of a ventilation package applying the present invention to ventilation.

Ventilation package applied to ventilation is the exhaust fan on the rooftop because it is difficult to perform natural exhaust by using a non-powered fan (FAN) in the bathroom and kitchen exhaust of a high-rise house or officetel and toilet in a business building. The exhaust fan is planned to be installed, but because the control is difficult, noise is not generated in the generation duct by operating the exhaust fan for 24 hours, or the backflow is often caused by unpleasant exhaustion.

Ventilation package to which the present invention is applied is composed of a pressure sensor and an exhaust fan, as shown in Figure 7, to calculate the load with the optimum control conditions, and to control the waste fan with a remote control panel according to the load can achieve the maximum efficiency have.

8 to 10 are diagrams showing an embodiment of a control flowchart of the operation mode during normal operation, energy operation, and diagnostic operation, respectively.

The present invention has been described above with reference to one embodiment shown in the drawings, but those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom.

10: Scene 20: Central Monitoring Team
30: smart terminal 40: load
110: field pump package 120: field control panel
130: panel PC 121: input unit
122: storage unit 123: signal conversion unit
124: operation unit 125: control unit
126: output unit 127: selective operation unit

Claims (7)

An on-site pump package including a flow rate pump, a valve, and sensors installed together with the on-site piping to supply and return the fluid of the supply source to the load side according to a control signal;
It receives the temperature, pressure, flow rate, equipment status and equipment alarm from the field pump package and transmits it to the panel PC, reports it to the central monitoring panel through the communication network, according to the control command of the central monitoring panel or the control command of the panel PC. A field control panel for controlling the pump and the valve;
Panel PCs with dedicated software, including control logic to drive field pump packages;
A central monitoring panel expressing the operation status of the facility to monitor the operator and transferring the operation of the operator to the site control panel through a communication network, and transmitting the operation status of the site to the smart terminal of the operator; And
Equipped with a remote management app for remote control includes a smart terminal connected to the central monitoring panel through a communication network,
The field control panel is implemented as a programmable logic controller (PLC) or a direct digital controller (DDC) to control the field pump package according to the control command of the panel PC or the central monitoring panel.
The panel PC is implemented in the form of a touch screen to execute the onboard dedicated program to display the facility status of the site on the monitor and to receive the operator's touch operation to select the operation mode or set various parameter values, energy-saving operation Mode and self-diagnosis operation mode.
The field control panel
In connection with the panel PC equipped with a dedicated program including the control logic adopted according to the type of the field pump package to perform the normal operation, energy operation or diagnostic operation,
In general operation, the rotation speed of the pump is controlled by varying the rotational speed of the pump according to the measured value of the pressure sensor installed in the operating system of the pump, and the sequential operation is calculated by calculating the required amount of heat on the load side based on the measured value of the flow meter and the inlet / outlet temperature difference. Rotating operation by determining the cumulative operating time and operation rate of
Energy operation saves energy by lowering the number of revolutions of the pump than normal operation due to the measured pressure value of the pressure sensor installed at the lower end when the load is reduced in addition to the basic operation mode required for the pump operation system.
In case of error in operation value due to unexpected disturbance or abnormality of piping system in normal operation or energy operation mode required for pump operation system, the diagnostic operation is to reduce the set value of normal operation or energy operation mode to protect the equipment. Oil flow pump control system with energy saving and equipment protection and accident prevention, characterized in that tripping the equipment to prevent accidents if the value does not return to normal.
According to claim 1, wherein the central monitoring panel
Implemented as a web (WEB) server and DB server, connected to the site control panel and the panel PC through an internet-based network module to display the operation status of the site as a central monitor, and communicate with the remote management app mounted on the operator's smart terminal. The oil quantity pump control system with energy saving and equipment protection and accident prevention function, characterized by displaying the operation status of the field equipment on the operator's smart terminal and receiving the operator's operation from a remote site and transmitting it to the field control panel.
delete delete The method of claim 1, wherein the field control panel
It is installed in the pipe of the field pump package to detect the temperature of the fluid and installed in the pipe of the field pump package to install the pressure sensor to detect the pressure of the fluid and to the pipe of the field pump package to measure the fluid volume. An input unit for receiving data from the equipment status unit providing the equipment status of the flow meter and the field pump package, and the equipment alarm unit providing the equipment alarm of the field pump package;
A storage unit for storing the input data;
A signal converter converting the stored data into data for operation;
An operation unit which calculates data received from the input unit by the function module, sends the result value to the storage unit, stores the result value, and transmits the result value to the control unit;
A control unit for converting the result value calculated by the operation unit into an output value according to the control logic of the PID, PI, high selector and low selector, storing the result in the storage unit and transmitting the result to the output unit;
A variable oil pump control system having energy saving and equipment protection and accident prevention functions, characterized in that the output unit for outputting the operation signal, the equipment stop signal, the inverter signal or the valve opening signal according to the control signal of the control unit.
The method of claim 1 wherein the field pump package is
A variable flow pump control system with energy savings, equipment protection and accident prevention, which can be applied to heat exchangers for cooling and heating, water cooled EHP, secondary pumps, hot water supply, water supply, sewage treatment or ventilation.
The method of claim 6, wherein the field pump package is applied to a heat exchanger,
A heating heat exchanger that receives heavy hot water from the main supply pipe to transfer heat for heating, and a hot water reheat heat exchanger that receives heavy hot water from the main supply pipe to transfer heat for hot water supply, and a return from the heating heat exchanger and the hot water reheat heat exchanger. Hot water preheating heat exchanger for preheating the feedwater with heavy hot water and returning it to the main return pipe, a valve for controlling the water supply of the heating heat exchanger, a valve for controlling the water supply of the hot water heat exchanger, and a first heating circulation operated in parallel with each other. A pump and a second heating circulation pump, a differential pressure valve, a heating temperature sensor and pressure sensors, a first hot water circulation pump and a second hot water circulation pump operated in parallel to each other, and a hot water temperature sensor. Oil flow pump control system with energy saving, equipment protection and accident prevention.

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