Background technology
At present the main oil production equipment in oil field, land is various oil pumpers (as the beam-pumping unit of various model specifications, screw rod oil pumps etc.), and that this class oil pumper distributes in China oil field is very wide, quantity is very big, along with the development of field produces also has increase trend.This class oil pumper in use exists following problem:
1, these oil pumpers open-air operation continuously in 24 hours throughout the year.Blowing and raining, freezingly snow, thunder and lightning invasion and attack, the temperature difference greatly (the Northeast reaches 90 ℃), concentrate the monitoring difficulty very big.Manual inspection is still leaned in the most of oil fields of China at present, and labour intensity is big, and operating environment is poor; it is big that artificial quantity is patrolled and examined in break tour; but also the oil pumper fault causes long downtimes can not in time find oil pumper fault, particularly night, winter, rainy season the time, reduces oil production rate.
2, by artificial or well head portable instrument periodic monitoring, surveyed once in one day or surveyed once in ten days, do not reach continual monitoring, can not in time grasp the duty and the duty variation thereof of oil pumper, can not carry out scientific and reasonable maintaining to equipment.
3, at present domestic and international oil pumper monitoring mode has wireless mode (general wireless and application mobile communication mode), satellite communication mode.These modes one are the equipment price costlinesses, the 2nd, take channel expense height such as wireless, mobile phone, satellite, and with the increase operating cost costliness of monitoring equipment quantity and data bulk.The 3rd, climatic environment is big to the transmission influence, so be difficult to apply in China.
Summary of the invention
The purpose of this utility model provides a kind of oil pumper power extension frequency carrier monitoring device.It can solve China's various oil pumpers in most of oil fields still by manual inspection; labour intensity is big; operating environment is poor; it is big that artificial quantity is patrolled and examined in break tour; but also can not in time find the oil pumper fault; particularly the oil pumper fault causes long downtimes when night, winter, rainy season, reduces the problem of oil production rate.Can realize solving centralized detecting, the uninterrupted problem that detects, can carry out scientific and reasonable maintaining to equipment, and equipment price be cheap, the maintenance operation expense is low.This device is under one or more transformer platforms, the duty of oil pumper under all these transformer platforms is carried out the oil pumper power extension frequency carrier monitoring device of round-the-clock robotization in 24 hours, intelligent monitoring.It powers power network as communication medium with the unattended oil pumper in field itself, characteristics according to these medium, adopt spread spectrum communication mode, transmit the Monitoring Data of disperseing the multiple spot oil pumper under the same transformer platform, by sensing technology, single-chip microcomputer, PC, and the combining of computer software and oil pumper characteristic, realize monitoring, curve plotting is analyzed, judges, stores, shown to the operating state data of monitoring and function such as warn, being used for field production management, plant maintenance, and provide the volume analysis parameter.Fault for oil pumper can in time be warned, so that in time handle, shortens fault-time, has correspondingly improved oil production rate.
The utility model utilizes the line of electric force of the used power of oil pumper itself as communications carrier, needn't set up order wire in addition and carry out information transmission, neither takies wireless channel, do not utilize the mobile phone channel yet, also, utilize ready-made line of electric force, realize information transmission without satellite channel.The monitoring unit of monitoring oil pumper is received line of electric force just can be sent to this monitoring unit to the instruction of monitoring main frame, and the Information Monitoring of monitoring unit also is sent to the monitoring main frame by line of electric force.Make that this device is easy to use, cost also reduces greatly.
This oil pumper power extension frequency carrier monitoring device, it powers power network as communication medium with the unattended oil pumper in field itself, adopt spread spectrum communication mode, transmit the Monitoring Data of disperseing the multiple spot oil pumper under the same transformer platform, by sensing technology, single-chip microcomputer, PC, and the combining of computer software and oil pumper characteristic, realize monitoring, curve plotting is analyzed, judges, stores, shown to the operating state data of monitoring and the monitoring device of function such as warn.
Monitoring unit, power line network and fiber optic network, the monitoring concentrator, monitoring main frame and monitoring host interface case, host information processor circuit connects display screen and spread spectrum and de-spreading circuit, spread spectrum is connected transmitting circuit and connects the line of electric force coupled circuit again with de-spreading circuit, connect collection of letters circuit again, be connected with de-spreading circuit with spread spectrum again, be connected with the line of electric force coupled circuit of the monitoring unit of a plurality of oil pumpers by line of electric force, collection of letters circuit again is linked in sequence, spread spectrum and de-spreading circuit, transmitting circuit forms a loop with the line of electric force coupled circuit, wherein de-spreading circuit links to each other with information-processing circuit, and the signal of oil pumper is connected on the information-processing circuit by Monitoring Data Acquisition Circuit and analog to digital conversion circuit.The processor circuit can connect printer in addition.
Each oil pumper is provided with a monitoring unit, by current transformer a wherein phase current of this pumping-unit motor is monitored, and it receives the instruction of monitoring main frame on line of electric force, after judging, monitoring information is sent to line of electric force.
Power line network is that three-phase and four-line overhead power transmission line under each transformer platform is as spread spectrum communication medium and power lead; Fiber optic network compiles network as the line of electric force spread-spectrum signal of each transformer platform, and two networks are pooled to the monitoring main frame to the monitoring unit monitoring information of all transformer platforms by the monitoring concentrator.
The monitoring concentrator connects the monitoring main frame, and the monitoring host command after judging, is converted to spread-spectrum signal to light signal and is sent to each monitoring unit on the power line network; The information via electric signal that monitoring unit on the electric power networks under each transformer platform is sent is transferred to monitoring host interface case to the conversion of light signal again.
The monitoring unit of monitoring main frame under each transformer platform sends instruction, by monitoring host interface case is electrical signal conversion that light signal is sent to the monitoring concentrator through optical fiber, the monitoring concentrator converts light signal to the spread spectrum electric signal, be sent to the monitoring unit under each transformer platform then, and monitoring host interface case converts electric signal to after the optical fiber of each monitoring concentrator is compiled and is input to the monitoring main frame, supervisor is analyzed, judges, stores, shown to the monitoring main frame to input information, realizes various functions.Every monitoring main frame can be handled the monitoring information of extension set under 3-4 the transformer platform simultaneously simultaneously.
To the single-phase current monitoring,, realize route identification, transmitting-receiving control, information processing and the transmission coding of spread spectrum communication in the monitoring unit by A/D conversion front end circuit and single-chip microprocessor MCU-P87LPC767 interface.
Both receive and dispatch judgement by the monitoring concentrator line of electric force spread spectrum communication network, optical communication network, carry out the conversions of light-electricity and electro-optical signal.
The monitoring concentrator can be judged the route of transformer platform, carry out photoelectricity and the cross-platform networking of electric light conversion realization separately, realize simultaneously the isolation of optical fiber and line of electric force again, it adopts the SC1128 chip to constitute spread spectrum communication and 2501M opto-electronic conversion card, with single-chip microprocessor MCU-2051 its judgement of changing is realized automatically conversion in real time.
Monitoring main frame and monitoring mainframe box are realized: a. realizes the mutual conversion of light signal-electric signal with 2501M opto-electronic conversion card, b. adopt the RS232 card with computer bus accumulate a cover or a few cover monitoring main frame monitor simultaneously several to tens transformer platforms oil pumper duty c. monitoring main frame adopt independent development software on industrial computer, to realize each monitoring unit is sent function command, and the monitoring information of each monitoring unit of receiving stored, analyze, judge, show, form, alarms etc. form the oil pumper work state information, the user is provided, realizes its using value.
1, the utility model is used spread spectrum communication mode and is adopted spread spectrum SC1128 chip, has high anti-interference and high antidamping, adapt to oil pumper point on the open-air overhead power transmission line many (maximum transformer platforms undertake 30 to 40 even more oil pumper), disperse the layout characteristics of (common transformer platform institute reaches several kilometers of circumferences with the tree-like distribution of oil pumper), realize all oil pumper comprehensive informations are transmitted.
2, are equipment scattered distributions according to the on-the-spot characteristics of field produces, require the management high concentration, only disperse monitoring, focus on, reach functions such as demonstration, storage then, just can raise the efficiency.The utility model is in order to improve production management efficiency and management level, utilize multi-platform center to set up management point, take concentrator of a transformer platform, with short optical fiber and 2501M optic fiber converter spread spectrum communication is concentrated into net, realize cross-platform, multi-platform monitoring, improved the quantity that oil pumper is managed simultaneously greatly.Reach the oil pumper under 1-3 transformer platform of a PC terminal management, 2-3 PC terminal can concentrate on the monitoring that 200 oil pumpers are contained in a management branch center.Also can continue the upwards condition of networking according to user's needs.
3, the utility model adopts single-chip microcomputer (band A/D conversion), sensor, computing machine (PC terminal) and software thereof to combine with the oil pumper characteristic, and Application and Development software is realized 24 hours continuous duties of every oil pumper of fast inspection automatically.
4, the utility model takes to survey the mechanism of monophase machine electric current: oil pumper is through the transmission and its instantaneous moment of raising of slowing down with threephase motor, under normal circumstances the electric current of three phases is very consistent, along with the variation in the work period of oil pumper also is consistent, so the variation of three-phase current is represented in variation that can a phase current, comprehensively become the duty of oil pumper.It is undesired (as an outage mutually that the electric current of three phases all is in; all the other biphase currents are greater than normal current; if monitoring is that other phase just can be judged electric current greater than normal condition; if monitoring current is zero, promptly monitor the phase current outage).So take to survey single-phase current, simplified equipment, lead-in wire are reduced, the software work amount reduces, and data volume also reduces.(be necessary certainly to survey three phase times also can accomplish three-phase survey simultaneously).
5, the utility model is undertaken that automatic analysis and judgment is respectively normally, unloaded (underload), overload, shuts down by extension set and main frame the monitoring information of oil pumper; back three are alarmed; to normal operating conditions, store with curve form according to user's needs, for customer analysis.Also leave the reservation input port of wellhead temperature, pressure, can show synchronously according to customer requirements and current of electric curve, raising more fully monitors oil well production.
The above, the utility model be cover complete from information acquisition to transmitting into net, showing that storage meets the oil pumper monitoring device of field production management needs, be to adopt high-tech, pay low cost, realize a high efficiency cover management device, say a blank having filled up the field production management field in some sense.
Description of drawings
Fig. 1 is YLC-I type oil pumper power extension frequency carrier monitoring device figure,
Fig. 2 is a monitoring unit.
Fig. 3 is the monitoring concentrator.
Fig. 4 is monitoring host interface case and monitoring main frame.
Fig. 5 is walking-beam pumping unit monitoring main frame block diagram
Fig. 6 is a walking-beam pumping unit monitoring unit block diagram
Fig. 7 is a walking-beam pumping unit monitoring device tester block diagram
Fig. 8 oil pumper power extension frequency carrier monitoring host circuit schematic diagram
Fig. 9 oil pumper power extension frequency carrier monitoring unit circuit theory diagrams
F101-428 monitoring unit among Fig. 1, D1-D4 line of electric force (low pressure), G1-G4 line of electric force (high pressure), the T1-T4 transformer, J1-J4 monitors concentrator, FC optical cable (4 core), Z monitoring host interface case and main frame, H management station room.
1.D1-D4 low-voltage power line among Fig. 2,2. pumping-unit motor, 3. current transformer, 4.A/D front end circuit, 5. single-chip microcomputer (band A/D change-over circuit), 6. spread spectrum modem, 7. reception amplifier, 8. transmit amplifier, 9. line of electric force coupled circuit.
1.D1-D4 low-voltage power line among Fig. 3,2. line of electric force coupled circuit, 3. reception amplifier, 4. transmit amplifier, 5. spread spectrum modem, 6. optic fiber converter, 7. single-chip microcomputer, 8. lightguide cable link.
1. optic fiber converters among Fig. 4,2. serial port board, 3. Industrial Control Computer (containing PC, display, keyboard, mouse etc.), 4. lightguide cable link.
Embodiment:
Get all the ready in the accompanying drawing behind the parts, assemble and be connected, can put into operation after debugging optimum condition with reference to block diagram and circuit diagram.
1. scheme (1) YLC-I type oil pumper power extension frequency carrier monitoring device.This figure is the example of totally 130 oil pumper monitoring devices under four transformer platforms (four transformers such as T1-T4).Under a transformer (T1) platform 31 oil pumpers are arranged, 31 monitoring units (F101-F131) are set.Because four transformers have and monitor concentrator separately, so 130 oil pumpers of whole device only need a few minutes just can all patrol and examine once.The monitoring information of monitoring unit focuses on monitoring concentrator (J1) by line of electric force (D1), and it (J1) converts optical signals optical cable FC to and is pooled to monitoring host interface case and monitoring main frame (Z).Monitoring host interface case and monitoring main frame are installed in the center of four transformer line of electric force scopes, to reduce the optical fiber total length.
2. monitoring unit figure (2) F101-F428.Being exemplified as four transformer T1-T4 has 130 oil pumpers, establishes 130 monitoring units altogether.31 monitoring units are arranged under the T1 transformer, it is from A, B, C, 1. O three-phase and four-line line of electric force goes up receiving spread frequency signal, through coupled circuit 9., by amplifying circuit 7., enter spread spectrum modem 6., link single-chip microcomputer 5. MCU (P87LPC767) instruct judgement, then according to the instruction monitoring information (from motor 2. through mutual inductor measuring to electric current, 4. be input to the A/D change-over circuit of MCU through the A/D front end circuit, canned data after P87LPC767 handles) be input to spread spectrum modem (SC1128), be modulated into spread-spectrum signal, output to transmitting circuit 8. after, by coupled circuit 9., deliver to line of electric force 1..
3. monitor concentrator figure (3).Monitoring concentrator of a transformer platform configuration.Being exemplified as four is J1-J4, its course of work is: from monitoring unit-monitoring main frame is from 1. line of electric force A, B, C, O line of electric force are gone up separately, collect the information of monitoring unit, under the control of single-chip microcomputer, spread-spectrum signal through coupled circuit 9. by collection of letters amplifying circuit 3., be demodulated to datagram through SC1128 and number deliver to opto-electronic conversion and play (2501M) and convert light signal input optical cable to, remove to monitor main frame Z.From monitoring main frame-monitoring unit is to send from the monitoring main frame to patrol and examine command information, arrive photoelectric commutator (2501M) by RS232, convert light signal to optical cable, remove to monitor the photoelectric commutator (2501M) of concentrator, convert electric signal to, modulate under the control of single-chip microprocessor MCU (SC1128), 4. modulation back spread-spectrum signal after amplifying, 9. send to line of electric force 1. to coupled circuit, monitored extension set receives.
4. monitoring main frame and monitoring mainframe box (Z) are schemed (4).It is the core of whole device, and it is arranged in the house (H) of the center of each transformer and oil pumper floor plan.It by the serial port circuit card 2. with photoelectric switching circuit 1., through optical cable 4. simultaneously to the monitoring concentrator of transformer (T1-T4) separately send out monitoring patrol and examine instruct each monitoring unit (F101-F131, F201-F234, F301-F334, F401-F428).After each monitoring unit receives that instruction is patrolled and examined in corresponding monitoring, monitoring information after their stores processor is sent to the monitoring concentrator by corresponding line of electric force (D1-D4), through optical cable, monitoring host interface case 1. 2., after 3. the monitoring main frame receives the Monitoring Data of each monitoring unit of each transformer platform, carry out data processing, by analysis, judge, storage, show the supervisor step, realize various functions.