CN212785221U - Frequency converter control device for simultaneously controlling motor and electric heating device - Google Patents
Frequency converter control device for simultaneously controlling motor and electric heating device Download PDFInfo
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- CN212785221U CN212785221U CN202021793412.2U CN202021793412U CN212785221U CN 212785221 U CN212785221 U CN 212785221U CN 202021793412 U CN202021793412 U CN 202021793412U CN 212785221 U CN212785221 U CN 212785221U
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Abstract
The utility model discloses a frequency converter control device for simultaneously controlling a motor and an electric heating device, which comprises a control cabinet, a PLC (programmable logic controller), an AC contactor, the motor and the electric heating device, wherein a three-phase AC power supply is input into the control cabinet, the control cabinet is provided with a three-phase output cable, the three-phase cable is respectively connected with three main contacts of the AC contactor, a U-phase cable is connected with an auxiliary contact of the AC contactor in parallel, and the PLC controls the three main contacts and the auxiliary contact to be closed and disconnected through a coil connected with the AC contactor; cables output by three contacts of the alternating current contactor are connected with a motor, the cables output by an auxiliary contact of the alternating current contactor are used as an electric heating device, and PE is grounded; the PLC is locally connected with the control cabinet and commands the control cabinet to switch between low-frequency motor control and intermediate-frequency electric heating control. By the frequency converter control device, the low-frequency and medium-frequency conversion in the same control cabinet can be realized, and the normal work of the motor and the electric heating can be respectively controlled; the control cabinet, the PLC and the alternating current contactor are integrated together, so that the occupied space is saved; the cost is reduced.
Description
Technical Field
The utility model relates to the field of petroleum technology, especially, relate to a simultaneous control motor and electric heater unit's converter controlling means.
Background
In the prior art, the electric heater at the oil-submersible wellhead is mainly used for heating and transmitting crude oil in oil collecting pipelines and oil pipelines of high-condensation heavy oil wells and oil wells in high and cold regions, can remove wax and viscosity, reduce oil flow resistance, and improve the crude oil station entry temperature, the oil extraction efficiency and the oil well yield.
The electric heating control cabinet is a medium frequency control cabinet (medium frequency range: 500-. The electric heating device and the electric heating device are controlled by respective control cabinets in the prior art as shown in figure 1, and at present, no control device can control the electric heating device and the electric heating device simultaneously.
SUMMERY OF THE UTILITY MODEL
The utility model discloses shortcoming to among the prior art provides a simultaneous control motor and electric heater unit's converter controlling means.
In order to solve the technical problem, the utility model discloses a following technical scheme can solve:
the utility model provides a frequency converter control device for simultaneously controlling a motor and an electric heating device, which comprises a control cabinet, a PLC (programmable logic controller), an alternating current contactor, the motor and the electric heating device, wherein the control cabinet is coupled with the PLC;
three-phase AC power input to the switch board, the switch board is equipped with three-phase output cable, three-phase output cable is W looks cable, V looks cable, U looks cable respectively, the switch board still includes PE, PE ground connection, W looks cable, V looks cable and U looks cable are connected respectively AC contactor's three main contact, U looks cable connects out one in parallel and is connected AC contactor and assists the contact, the PLC controller is connected AC contactor's three main contact and assistance contact respectively, and W looks cable, V looks cable, the U looks cable of three main contact output through AC contactor are connected respectively the motor, and the cable of assisting the contact output through AC contactor is electric heating device.
According to one of the preferred embodiments of the present invention, the frequency converter control device further comprises an armored cable, wherein the armored cable is a four-core armored cable, the four armored cables are respectively a first armored cable, a second armored cable, a third armored cable and a fourth armored cable, one end of the first armored cable, one end of the second armored cable and one end of the third armored cable are respectively connected to a W-phase cable, a V-phase cable and a U-phase cable which are output through three main contacts of the ac contactor, and the other end of the first armored cable, one end of the second armored cable and one end of the third armored cable are connected to the motor; one end of the fourth armored cable is connected with a cable output through an auxiliary contact of the alternating current contactor, and the output cable is an electric heating device.
According to the utility model discloses another preferred embodiment, the switch board is connected three-phase alternating current power supply, three-phase alternating current power supply includes R looks cable, S looks cable and T looks cable.
According to another preferred embodiment of the present invention, the motor is grounded, and the electric heating device is grounded.
According to the utility model discloses another preferred embodiment still includes the cabinet body, PLC controller and ac contactor set up respectively the internal portion of cabinet.
The utility model discloses owing to adopted above technical scheme, have apparent technological effect:
through the frequency converter control device of the utility model, the low frequency and the medium frequency conversion of the same control cabinet can be realized, and the normal work of the motor and the electric heating can be respectively controlled; because switch board, PLC controller and ac contactor all integrate together, so save occupation of land space, reduce cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic view of the overall structure of the prior art;
fig. 2 is a schematic view of the overall structure of the present invention.
Reference numbers in the drawings illustrate: 1. a control cabinet; 2. a PLC controller; 3. an AC contactor; 4. an armored cable; 5. a motor; 6. an electric heating device.
Detailed Description
The present invention will be described in further detail with reference to the following examples, which are illustrative of the present invention and are not intended to limit the present invention.
Example 1:
a frequency converter apparatus for simultaneously controlling a motor and an electric heating apparatus, as shown in fig. 2, the frequency converter apparatus includes a control cabinet 1, a PLC controller 2, an ac contactor 3, a motor 5, and an electric heating apparatus 6, the control cabinet 1 is coupled to the PLC controller 2; three-phase alternating current power supply inputs to switch board 1, switch board 1 is equipped with three-phase output cable, three-phase output cable is W looks cable, V looks cable, U looks cable respectively, the switch board still includes PE, PE ground connection, W looks cable, V looks cable and U looks cable are connected respectively alternating current contactor 3's three main contact, U looks cable connects out one in parallel and is connected alternating current contactor and assists the contact, three main contact and the assistance contact of alternating current contactor 3 are connected respectively to PLC controller 2, and W looks cable, V looks cable, the U looks cable through alternating current contactor 3's three main contact output are connected respectively motor 5, and the cable of assisting the contact output through alternating current contactor 3 is electric heating device.
In the whole device, in order to protect the space between the alternating current contactor and the motor and between the alternating current contactor and the electric heating device from being damaged by external mechanical force, corroded by chemical gas and the like, an armored cable 4 is arranged between the alternating current contactor and the motor and between the alternating current contactor and the electric heating device, the armored cable 4 is a four-core armored cable 4, four armored cables 4 are respectively a first armored cable 4, a second armored cable 4, a third armored cable 4 and a fourth armored cable 4, one end of each of the first armored cable 4, the second armored cable 4 and the third armored cable 4 is respectively connected with a W-phase cable, a V-phase cable and a U-phase cable which are output through three main contacts of the alternating current contactor 3, and the other end of each of the first armored cable 4, the second; one end of the fourth armored cable 4 is connected with a cable output through an auxiliary contact of the alternating current contactor 3, the cable is an electric heating device 6, the motor 5 is grounded, and the electric heating device 6 is grounded.
The control cabinet 1 is provided with a three-phase input cable which comprises an R-phase cable, an S-phase cable and a T-phase cable, and the three-phase alternating current power supply is respectively connected with the R-phase cable, the S-phase cable and the T-phase cable of the three-phase input cable.
Still include the cabinet body, switch board 1, PLC controller 2 and ac contactor 3 set up respectively the internal portion of cabinet.
In this embodiment, the control cabinet can be selected to realize the control cabinet of this application, and is not limited to the model, and the PLC controller is so, because the model of PLC controller is too much, and the corresponding PLC controller that can realize this application is also many, does not do not limit here yet.
The utility model discloses specific realization process as follows:
the utility model adds a PLC controller 2 and an AC contactor 3 on the structure of a control cabinet 1; the PLC controller 2 is used for sending an instruction to the control cabinet 1 on one hand to enable the control cabinet to switch output frequency; on the other hand, the control motor 5 or the electric heating device 6 is selected under the combined action of the AC contactor 3; the parallelly connected output of arbitrary looks cable in U looks cable, V looks cable and the W looks cable of 1 output of controller is double-phase cable, for example, extends a looks cable from U looks cable for the three-phase cable becomes the four-phase cable, two U looks cables, first U looks cable and second U looks cable promptly, and wherein the contact is assisted to ac contactor 3 is connected to second U looks cable, and with first U looks cable of original, V looks cable and W looks cable output connection to ac contactor 3's main contact on the utility model discloses in other feasible embodiments, can be connected other looks cables that connect out in parallel to the assistance contact of ac contactor 3.
In the normal oil extraction process, the control cabinet 1 outputs low-frequency, the main contact of the alternating current contactor 3 is closed, the auxiliary contact of the alternating current contactor 3 is disconnected, namely the motor 5 works normally, and the electric heating device 6 stops working;
manually operating the PLC controller 2 to adjust the frequency of the control cabinet 1 from low frequency to medium frequency range, and acting on the controller 1, so that a main contact in the alternating current contactor 3 is disconnected, the motor 5 stops working, meanwhile, an auxiliary contact of the alternating current contactor 3 is communicated, namely, the electric heating device 6 starts working; the manual operation PLC controller 2 adjusts the frequency of the control cabinet 1 to be in a low-frequency range, so that the auxiliary contact of the alternating current contactor 3 is disconnected, the electric heating device 6 stops working, meanwhile, the main contact of the alternating current contactor 3 is communicated, and the motor 5 works normally.
In addition, it should be noted that the specific embodiments described in the present specification may differ in the shape of the components, the names of the components, and the like. All equivalent or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (5)
1. A frequency converter control device for simultaneously controlling a motor and an electric heating device is characterized by comprising a control cabinet, a PLC (programmable logic controller), an alternating current contactor, the motor and the electric heating device, wherein the control cabinet is coupled with the PLC;
three-phase AC power input to the switch board, the switch board is equipped with three-phase output cable, three-phase output cable is W looks cable, V looks cable, U looks cable respectively, the switch board still includes PE, PE ground connection, W looks cable, V looks cable and U looks cable are connected respectively AC contactor's three main contact, U looks cable connects out one in parallel and is connected the assistance contact, three main contact and the assistance contact of AC contactor are connected respectively to the PLC controller, and W looks cable, V looks cable, the U looks cable through AC contactor's three main contact output connect respectively the motor, and the cable of assisting the contact output through AC contactor is electric heating device.
2. The inverter control device for controlling a motor and an electric heating device simultaneously according to claim 1, further comprising an armored cable, wherein the armored cable is a four-core armored cable, four armored cables are respectively a first armored cable, a second armored cable, a third armored cable and a fourth armored cable, one end of each of the first armored cable, the second armored cable and the third armored cable is respectively connected with a W-phase cable, a V-phase cable and a U-phase cable which are output through three main contacts of an AC contactor, and the other end of each of the first armored cable, the second armored cable and the third armored cable is connected with the motor; one end of the fourth armored cable is connected with a cable output through an auxiliary contact of the alternating current contactor, and the output cable is an electric heating device.
3. The apparatus of claim 1, wherein the control cabinet is connected to a three-phase ac power source, the three-phase ac power source including an R-phase cable, an S-phase cable, and a T-phase cable.
4. The apparatus of claim 1, wherein the motor is grounded and the electric heating means is grounded.
5. The frequency converter control device for simultaneously controlling a motor and an electric heating device according to claim 1, further comprising a cabinet body, wherein the PLC controller and the ac contactor are respectively disposed inside the cabinet body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021793412.2U CN212785221U (en) | 2020-08-25 | 2020-08-25 | Frequency converter control device for simultaneously controlling motor and electric heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021793412.2U CN212785221U (en) | 2020-08-25 | 2020-08-25 | Frequency converter control device for simultaneously controlling motor and electric heating device |
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| Publication Number | Publication Date |
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| CN212785221U true CN212785221U (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021793412.2U Active CN212785221U (en) | 2020-08-25 | 2020-08-25 | Frequency converter control device for simultaneously controlling motor and electric heating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110925A (en) * | 2022-07-05 | 2022-09-27 | 东营久森石油科技有限公司 | Electromagnetic frequency conversion intensification viscosity reduction device |
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2020
- 2020-08-25 CN CN202021793412.2U patent/CN212785221U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110925A (en) * | 2022-07-05 | 2022-09-27 | 东营久森石油科技有限公司 | Electromagnetic frequency conversion intensification viscosity reduction device |
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