CN216490285U - Land oil rig electric control system based on water-cooling frequency converter - Google Patents

Abstract

The application discloses land oil-well rig electrical system based on water-cooling converter includes: the system comprises a generator set, a frequency converter, a control cabinet, a controller, a water cooling cabinet and a transmission control module; the generator set is electrically connected with the input end of the frequency converter, and the output end of the frequency converter is electrically connected with the motor of the drilling machine; the control cabinet is internally provided with a singlechip which is electrically connected with the control cabinet and an input end of a data receiving slave station controller which is electrically connected with the singlechip, and an output end of the controller is suitable for being electrically connected with a motor of a drilling machine; the generator set is also electrically connected with the water cooling cabinet and used for providing electric energy for the water pump in the water cooling cabinet so as to enable the water cooling cabinet to cool the frequency converter; the input end of the transmission control module is electrically connected with the generator set, and the output end of the transmission control module is used for controlling the operation of a pump body of the drilling machine and a water pump in the water cooling cabinet. The water-cooling heat dissipation type solar water heater has the advantages of strong environment adaptability, high power, strong overload capacity and strong stability, and can not be interfered by dust.

Description

Land oil rig electric control system based on water-cooling frequency converter

Technical Field

The utility model relates to a rig equipment technical field especially relates to a land oil rig electrical system based on water-cooling converter.

Background

At present, forced air cooling is the mainstream of the heat dissipation mode adopted by the land drilling machine electric control system in China, fans need to be arranged in the land drilling machine electric control system in the forced air cooling, the number of the fans is increased along with the increase of the power of a frequency converter, but the stability of the fans is poor, and the stability of the fans is easily interfered by dust.

Disclosure of Invention

In view of the above, the present disclosure provides an electric control system for a land oil rig based on a water-cooled frequency converter. The water-cooling heat dissipation type solar water heater has the advantages of strong environment adaptability, high power, strong overload capacity and strong stability, and can not be interfered by dust.

According to an aspect of the application, a land oil-well rig electric control system based on a water-cooled frequency converter is provided, which comprises:

the system comprises a generator set, a frequency converter, a control cabinet, a controller, a water cooling cabinet and a transmission control module;

the frequency converter and the controller are integrated in the same cabinet body;

the generator set is electrically connected with the input end of the frequency converter, and the output end of the frequency converter is suitable for being electrically connected with a motor of a drilling machine and used for providing electric energy for the motor of the drilling machine;

the control cabinet is internally provided with a singlechip and a data receiving slave station which are electrically connected, and the receiving slave station is configured to receive a control instruction sent by an upper computer and transmit the received control instruction to the singlechip;

the input end of the controller is electrically connected with the single chip microcomputer, and the output end of the controller is suitable for being electrically connected with a motor of the drilling machine so as to receive the control instruction issued by the single chip microcomputer and regulate and control the running state of the motor of the drilling machine according to the control instruction;

the generator set is also electrically connected with the water cooling cabinet and used for providing electric energy for a water pump in the water cooling cabinet so as to enable the water cooling cabinet to cool the frequency converter;

the input end of the transmission control module is electrically connected with the generator set, and the output end of the transmission control module is used for controlling the operation of a pump body of the drilling machine and a water pump in the water cooling cabinet.

In one possible implementation manner, the transmission control module comprises a power generation cabinet, a transformer, a switch cabinet and an MCC control cabinet group;

the input end of the power generation cabinet is electrically connected with the power generator set;

the output end of the power generation cabinet is electrically connected with the input end of the transformer, the output end of the transformer is electrically connected with the input end of the switch cabinet, the output end of the switch cabinet is electrically connected to the MCC control cabinet group, and the MCC control cabinet group is used for controlling a pump body of a drilling machine and a water pump in the water cooling cabinet.

In one possible implementation, the frequency converter further comprises a rectifier, an inverter and a brake cabinet;

the input end of the rectifier is electrically connected with the generator set, the output end of the rectifier is electrically connected with the input end of the inverter, the output end of the inverter is electrically connected with the input end of the brake cabinet, and the output end of the brake cabinet is electrically connected with the motor.

In a possible implementation manner, a radiator is further arranged in the water cooling cabinet;

the radiator is provided with a water outlet and a water return port, the water return port is provided with a water return pipeline, and the water outlet is provided with a water outlet pipeline;

the rectifier is provided with a first cooling water inlet pipe and a first cooling water outlet pipe, the inverter is provided with a second cooling water inlet pipe and a second cooling water outlet pipe, and the brake cabinet is provided with a third cooling water inlet pipe and a third cooling water outlet pipe;

the first cooling water inlet pipe, the second cooling water inlet pipe and the third cooling water inlet pipe are communicated with the water outlet pipeline;

the first cooling water outlet pipe, the second cooling water outlet pipe and the third cooling water outlet pipe are communicated with the water return pipeline.

In a possible implementation manner, the system further comprises a control unit;

a first temperature sensor is arranged on the water outlet pipeline and is electrically connected with a first input end of the control unit, and a first output end of the control unit is electrically connected with an electromagnetic valve arranged on the water outlet pipeline and is used for controlling the opening and closing of the electromagnetic valve on the water outlet pipeline according to the temperature detected by the first temperature sensor;

be equipped with second temperature sensor on the return water pipeline, second temperature sensor with the second input electricity of control unit is connected, the second output of control unit is in with the setting solenoid valve electricity on the return water pipeline is connected for according to the temperature control that second temperature sensor detected opening and closing of solenoid valve on the return water pipeline.

In a possible implementation manner, a pressure sensor is further arranged on the water return pipeline;

the pressure sensor is electrically connected with a third input end of the control unit, and a third output end of the control unit is electrically connected with a pressure release valve arranged on the water return pipeline and used for controlling the opening and closing of the pressure release valve on the water return pipeline according to the pressure detected by the pressure sensor.

In a possible implementation manner, the water return device further comprises a display, and a flow sensor is further arranged on the water return pipeline;

the flow sensor is electrically connected with a fourth input end of the control unit, and a fourth output end of the control unit is electrically connected with the display and used for sending the flow detected by the flow sensor to the display for displaying.

In a possible implementation manner, a filter is arranged on the water outlet pipeline and used for filtering the cooling water.

In a possible implementation manner, a circulating pump is arranged on the water return pipeline.

In a possible implementation manner, when the motors in the drilling machine are configured to be two, the frequency converters are provided in two, and both the frequency converters are electrically connected with the generator set;

the output ends of the two frequency converters are electrically connected with one motor.

The land oil rig electric control system based on the water-cooling frequency converter generates electricity through the generator set and supplies power to the motor through the frequency converter, so that the motor can operate. A single chip microcomputer and a data receiving slave station are arranged in the control cabinet, the data receiving slave station can receive a control instruction sent by an upper computer and transmit the control instruction sent by the upper computer to the single chip microcomputer, and the single chip microcomputer carries out processing conversion. The control instruction processed and converted by the single chip microcomputer is transmitted to the controller, and the controller on the frequency converter adjusts the running state of the motor according to the control instruction. The engine set also supplies power to the transmission control module, and the transmission control module can control each pump body of the drilling machine and the water pump in the water cooling cabinet to work. In the embodiment of the application, the water-cooling frequency converter-based land oil rig electric control system is provided with the water-cooling cabinet, the engine unit provides electric power for the water pump in the water-cooling cabinet, and the transmission control module controls the operation of the water pump. Therefore, the land petroleum drilling machine electric control system based on the water-cooled frequency converter has the advantages of being strong in environment adaptability, large in power, strong in overload capacity and strong in stability and being free of interference of dust due to the fact that a water-cooled heat dissipation mode is used.

Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.

FIG. 1 shows a single line diagram of a land oil rig electrical control system based on a water-cooled frequency converter of an embodiment of the present disclosure;

FIG. 2 shows a cooling system diagram of a land oil rig electrical control system based on a water-cooled frequency converter of an embodiment of the present disclosure;

fig. 3 shows a cooling water circuit diagram of a land oil rig electric control system based on a water-cooled frequency converter according to an embodiment of the present disclosure.

Detailed Description

Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention or for simplicity in description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present disclosure.

Fig. 1 shows a single line diagram of a land oil rig electrical control system based on a water-cooled frequency converter according to an embodiment of the present disclosure. Fig. 2 shows a cooling system diagram of a land oil rig electric control system based on a water-cooled frequency converter according to an embodiment of the present disclosure. FIG. 3 shows a cooling water circuit diagram of a land oil rig electric control system based on a water-cooled frequency converter according to an embodiment of the disclosure. As shown in fig. 1, fig. 2 or fig. 3, the land oil-well rig electric control system based on the water-cooled frequency converter comprises: the water cooling system comprises a generator set 100, a frequency converter 200, a control cabinet 300, a controller, a water cooling cabinet 600 and a transmission control module 500, wherein the frequency converter 200 and the controller are integrated in the same cabinet body, the generator set 100 is electrically connected with the input end of the frequency converter 200, and the output end of the frequency converter 200 is electrically connected with a motor 400 of a drilling machine and used for providing electric energy for the motor 400 of the drilling machine. The control cabinet 300 is internally provided with a single chip microcomputer 320 and a data receiving slave station 310 which are electrically connected, and the data receiving slave station 310 is configured to receive a control instruction sent by an upper computer and transmit the received control instruction to the single chip microcomputer 320. The input end of the controller is electrically connected with the single chip microcomputer 320, and the output end of the controller is electrically connected with the motor 400 of the drilling machine so as to receive a control instruction sent by the single chip microcomputer 320 and regulate and control the running state of the motor 400 of the drilling machine according to the control instruction. The generator set 100 is further electrically connected with the water cooling cabinet 600 and is used for providing electric energy for a water pump in the water cooling cabinet 600 so that the water cooling cabinet 600 cools the frequency converter 200. The input end of the transmission control module 500 is electrically connected with the generator set 100, and the output end of the transmission control module 500 is used for controlling the operation of the pump body of the drilling machine and the water pump in the water cooling cabinet 600.

The land oil rig electric control system based on the water-cooled frequency converter 200 generates power through the generator set 100 and supplies power to the motor 400 through the frequency converter 200, so that the motor 400 can operate. The control cabinet 300 is internally provided with a single chip microcomputer 320 and a data receiving slave station 310, the data receiving slave station 310 can receive a control instruction sent by an upper computer and transmit the control instruction sent by the upper computer to the single chip microcomputer 320, and the single chip microcomputer 320 performs processing conversion. The control instruction processed and converted by the single chip microcomputer 320 is transmitted to the controller, and the controller on the frequency converter 200 adjusts the running state of the motor 400 according to the control instruction. The engine set also supplies power to the transmission control module 500, and the transmission control module 500 can control each pump body of the drilling machine and the water pump in the water cooling cabinet 600 to work. In addition, the water-cooling frequency converter 200-based land oil rig electric control system is provided with the water-cooling cabinet 600, the engine unit provides electric power for the water pump in the water-cooling cabinet 600, and the transmission control module 500 controls the water pump to operate. Therefore, the land oil rig electric control system based on the water-cooled frequency converter 200 in the embodiment of the application has the advantages of strong environment adaptability, high power, strong overload capacity and strong stability in a water-cooled heat dissipation mode, and can not be interfered by dust.

Here, it should be noted that the control of the operation state of the motor 400 refers to the control of the operation speed of the motor 400, when the motor 400 needs to regulate and control the speed, the upper computer may send a corresponding control instruction, and receive the control instruction from the station 310 through data receiving, and transmit the control instruction to the controller after being converted by the single chip microcomputer 320, and the controller may change the magnitude of the current input by the generator set 100 through the frequency converter 200, so as to regulate and control the operation speed of the motor 400. Here, it should be noted that the circuit and the control program required by the controller to change the current magnitude input by the generator set 100 through the frequency converter 200 can be implemented by using the prior art of those skilled in the art, and are not described herein in detail.

Here, it should also be noted that there is a control panel on the frequency converter, the START and STOP of the motor is controlled by pressing "START" and "STOP", and the rotation speed of the motor is controlled by pressing up and down keys after the motor is started. Thus completing the speed regulation process of the motor.

In one possible implementation, the transmission control module 500 includes a power generation cabinet 510, a transformer 520, a switch cabinet 530, and an MCC control cabinet set 540, wherein an input of the power generation cabinet 510 is electrically connected to the generator set 100. The output end of the power generation cabinet 510 is electrically connected with the input end of the transformer 520, the output end of the transformer 520 is electrically connected with the input end of the switch cabinet 530, the output end of the switch cabinet 530 is electrically connected to the MCC control cabinet set 540, and the MCC control cabinet 300 is used for controlling the pump body of the drilling machine and the water pump in the water cooling cabinet 600. The electricity generated by the generator set 100 is transmitted to the power generation cabinet 510, the power generation cabinet 510 can supply power to the grid power, the top drive and the transformer 520, the transformer 520 converts the six hundred volt voltage transmitted by the power generation cabinet 510 into the four hundred volt voltage and transmits the four hundred volt voltage to the switch cabinet 530, and the switch cabinet 530 controls the corresponding MCC control cabinet set 540.

Here, it should be noted that the power generation cabinet 510, the transformer 520, the switch cabinet 530 and the MCC control cabinet set 540 can be implemented by conventional technical means of those skilled in the art, and will not be described herein.

Here, it should also be noted that, in one possible implementation, a busbar is provided between the transformer 520 and the MCC control cabinet set 540 for electrically connecting the transformer 520 and the MCC control cabinet set 540.

Here, it should also be noted that, in one possible implementation, the MCC cabinet set 540 may include four MCC cabinet cells, and the input terminals of the four MCC cabinet cells are all electrically connected to the busbar. And the MCC cabinet unit can be realized by conventional technical means of those skilled in the art, and will not be described herein.

Here, it should also be noted that, in one possible implementation, the generator set 100 includes a first generator 110, a second generator 120, a third generator 130, and a fourth generator 140, wherein an output of the first generator 110, an output of the second generator 120, and an output of the third generator 130 are all electrically connected to a combined input of the frequency converter 200 and the water cooling cabinet 600. The fourth generator 140 group 100 is electrically connected to the MCC cabinet group.

In one possible implementation, the frequency converter 200 further includes a rectifier 210, an inverter 220, and a brake cabinet 230, an input of the rectifier 210 is electrically connected to the generator set 100, an output of the rectifier 210 is electrically connected to an input of the inverter 220, an output of the inverter 220 is electrically connected to an input of the brake cabinet 230, and an output of the brake cabinet 230 is electrically connected to the motor 400.

Furthermore, in a possible implementation manner, a radiator 610 is further disposed in the water-cooled cabinet 600, a water outlet and a water return port are disposed on the radiator 610, a water return pipe is disposed at the water return port, and a water outlet pipe is disposed at the water outlet. The rectifier 210 is provided with a first cooling water inlet pipe and a first cooling water outlet pipe, the inverter 220 is provided with a second cooling water inlet pipe and a second cooling water outlet pipe, and the brake cabinet 230 is provided with a third cooling water inlet pipe and a third cooling water outlet pipe. Wherein, first cooling inlet tube, second cooling inlet tube and third cooling inlet tube all set up with outlet conduit intercommunication. The first cooling water outlet pipe, the second cooling water outlet pipe and the third cooling water outlet pipe are communicated with a water return pipeline. Therefore, heat can be continuously taken out from the rectifier 210, the inverter 220 and the brake cabinet 230 to cool the frequency converter 200, and cooling water enters the radiator 610 from the water return pipeline after being heated, so that a closed circulating cooling system is formed.

Furthermore, in a possible implementation manner, the water outlet pipe further includes a control unit 620, the water outlet pipe is provided with a first temperature sensor 630, the first temperature sensor 630 is electrically connected to a first input end of the control unit 620, and a first output end of the control unit 620 is electrically connected to a solenoid valve provided on the water outlet pipe, and is used for controlling the solenoid valve on the water outlet pipe to open or close according to the temperature detected by the first temperature sensor 630. Be equipped with second temperature sensor 640 on the return water pipeline, second temperature sensor 640 is connected with the second input electricity of control unit 620, and the second output of control unit 620 is connected with the solenoid valve electricity on the return water pipeline for open or close of the solenoid valve on the control return water pipeline according to the temperature that second temperature sensor 640 detected. Therefore, the temperature of the cooling water can be conveniently monitored.

Here, it should also be noted that the control unit 620 may be implemented by using an existing chip, and will not be described in detail here.

Here, it should also be noted that, in one possible implementation, valves (which may be electromagnetic valves) are disposed on the first cooling water inlet pipe, the first cooling water outlet pipe, the second cooling water inlet pipe, the second cooling water outlet pipe, the third cooling water inlet pipe and the third cooling water outlet pipe, so that the flow of the cooling water is conveniently controlled.

Furthermore, in a possible implementation manner, a pressure sensor 650 is further disposed on the water return pipe, the pressure sensor 650 is electrically connected to a third input end of the control unit 620, and a third output end of the control unit 620 is electrically connected to a pressure relief valve disposed on the water return pipe, and is configured to control opening and closing of the pressure relief valve on the water return pipe according to the pressure detected by the pressure sensor 650. From this, can conveniently carry out real-time detection for return water pipeline's pressure.

In a possible implementation manner, the water circulation system further comprises a display, a flow sensor 660 is further arranged on the water return pipeline, the flow sensor 660 is electrically connected with a fourth input end of the control unit 620, and a fourth output end of the control unit 620 is electrically connected with the display and used for sending the flow detected by the flow sensor 660 to the display for displaying. Thus, the flow rate of the cooling water on the water return pipe can be monitored.

In one possible implementation, a filter 670 is provided on the outlet conduit for filtering the cooling water.

In one possible implementation, a circulation pump 680 is disposed on the water return pipe, thereby facilitating the water return pipe to return the cooling water.

Here, it should be noted that, in one possible implementation, the circulation pump 680 is provided with two, and the water return pipe includes a first main return pipe, a first return branch pipe, a second return branch pipe, and a second main return pipe, wherein one end of the first main return pipe is communicated with the water return port, and one end of the first return branch pipe and one end of the second return branch pipe are both communicated with the other end of the first main return pipe. The other end of the first backflow branch pipe and the other end of the second backflow branch pipe are communicated with one end of a second main backflow pipe, and the other end of the second backflow branch pipe is communicated with the first cooling water outlet pipe, the second cooling water outlet pipe and the third cooling water outlet pipe. Two circulation pumps 680 are provided in the first and second return branches, respectively.

Further, in a possible implementation, when the driving power of the drilling machine is larger and one motor 400 cannot satisfy the driving of the drilling machine, the drilling machine can be configured by configuring two motors 400. When the number of the motors 400 in the drilling machine is two, two frequency converters 200 are provided, the two frequency converters 200 are electrically connected with the generator set 100, and the output ends of the two frequency converters 200 are electrically connected with one motor 400.

The land oil rig electric control system based on the water-cooled frequency converter 200 in the embodiment of the application is provided with the generator set 100 consisting of the first generator 110, the second generator 120, the third generator 130 and the fourth generator 140, wherein the output end of the first generator 110, the output end of the second generator 120 and the output end of the third generator 130 are electrically connected to the combined input ends of the rectifier 210 and the water-cooled cabinet 600 of the two frequency converters 200. Each frequency converter 200 is further provided with an inverter 220, a brake cabinet 230 and a controller, the rectifier 210, the inverter 220 and the brake cabinet 230 are electrically connected in sequence, and the output end of the brake cabinet 230 is electrically connected to the motor 400. Thereby, power is supplied to the motor 400 so that the motor 400 can operate. The control cabinet 300 is further provided, a single chip microcomputer 320 and a data receiving slave station 310 are arranged in the control cabinet 300, the data receiving slave station 310 can receive a control instruction sent by an upper computer and transmit the control instruction sent by the upper computer to the single chip microcomputer 320, and the single chip microcomputer 320 carries out processing conversion. The control instruction processed and converted by the single chip microcomputer 320 is transmitted to the controller, and the controller adjusts the running state of the motor 400 according to the control instruction. The electricity generated by the first generator 110, the second generator 120 and the third generator 130 is transmitted to the electricity generating cabinet 510, the electricity generating cabinet 510 can supply power to the grid electricity, the top drive and the transformer 520, the transformer 520 converts the six hundred volt voltage transmitted by the electricity generating cabinet 510 into the four hundred volt voltage and transmits the four hundred volt voltage to the switch cabinet 530, the switch cabinet 530 controls the corresponding MCC control cabinet set 540, the MCC control cabinet set 540 controls the pump body of the drilling machine and the water pump in the water cooling cabinet 600 to operate, and the fourth generator 140 can also directly supply power to the MCC control cabinet set 540. The land oil-well rig electric control system based on water-cooling converter 200 of the embodiment of the application still disposes water-cooling cabinet 600 of cooling converter 200, be equipped with radiator 610 in the water-cooling cabinet 600, be provided with outlet conduit and return water pipeline on the radiator 610, be equipped with first cooling inlet tube and first cooling outlet pipe on the rectifier 210, be provided with second cooling inlet tube and second cooling outlet pipe on the dc-to-ac converter 220, be provided with third cooling inlet tube and third cooling outlet pipe on the braking cabinet 230, first cooling inlet tube, second cooling inlet tube and third cooling inlet tube all communicate the setting with the outlet conduit. The first cooling water outlet pipe, the second cooling water outlet pipe and the third cooling water outlet pipe are communicated with a water return pipeline. Thus, a closed circulation cooling system is formed, and a control unit 620 is provided, and a first temperature sensor 630 is provided on the water outlet pipe and a second temperature sensor 640 is provided on the water return pipe, thereby monitoring the temperatures on the water outlet pipe and the water inlet pipe. And corresponding electromagnetic valves are arranged on the water outlet pipeline and the water return pipeline to control the circulation of cooling water. Still be equipped with pressure sensor 650 on the return water pipeline, conveniently carry out real-time detection for return water pipeline's pressure to set up the relief valve on the return water pipeline, conveniently regulate and control return water pipeline's pressure. And a flow sensor 660 is further arranged on the water return pipeline, so that the flow speed of cooling water on the water return pipeline can be monitored and monitored. And a filter 670 for filtering the cooling water is provided on the water outlet pipe. From this, this application embodiment is based on land oil-well rig electrical system of water-cooling converter 200 has used its environmental suitability of water-cooling heat dissipation's mode strong, and power is big, and overload capacity is strong, and stability is strong, and can not receive the interference of dust, and dispel the heat more quietly to the water-cooling cabinet 600 of this application embodiment is integrated into a container, than the convenient saving cost more that two containers were needed in the forced air cooling.

Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. The utility model provides a land oil-well rig electrical system based on water-cooling converter which characterized in that includes:

the system comprises a generator set, a frequency converter, a control cabinet, a controller, a water cooling cabinet and a transmission control module;

the frequency converter and the controller are integrated in the same cabinet body;

the generator set is electrically connected with the input end of the frequency converter, and the output end of the frequency converter is suitable for being electrically connected with a motor of a drilling machine and used for providing electric energy for the motor of the drilling machine;

the control cabinet is internally provided with a singlechip and a data receiving slave station which are electrically connected, and the receiving slave station is configured to receive a control instruction sent by an upper computer and transmit the received control instruction to the singlechip;

the input end of the controller is electrically connected with the single chip microcomputer, and the output end of the controller is suitable for being electrically connected with a motor of the drilling machine so as to receive the control instruction issued by the single chip microcomputer and regulate and control the running state of the motor of the drilling machine according to the control instruction;

the generator set is also electrically connected with the water cooling cabinet and used for providing electric energy for a water pump in the water cooling cabinet so as to enable the water cooling cabinet to cool the frequency converter;

the input end of the transmission control module is electrically connected with the generator set, and the output end of the transmission control module is used for controlling the operation of a pump body of the drilling machine and a water pump in the water cooling cabinet.

2. The water-cooled frequency converter based land oil rig electric control system of claim 1, wherein the transmission control module comprises a power generation cabinet, a transformer, a switch cabinet and an MCC control cabinet group;

the input end of the power generation cabinet is electrically connected with the power generator set;

the output end of the power generation cabinet is electrically connected with the input end of the transformer, the output end of the transformer is electrically connected with the input end of the switch cabinet, the output end of the switch cabinet is electrically connected to the MCC control cabinet group, and the MCC control cabinet group is used for controlling a pump body of a drilling machine and a water pump in the water cooling cabinet.

3. The water-cooled frequency converter based land oil rig electrical control system of claim 1, wherein the frequency converter further comprises a rectifier, an inverter and a brake cabinet;

the input end of the rectifier is electrically connected with the generator set, the output end of the rectifier is electrically connected with the input end of the inverter, the output end of the inverter is electrically connected with the input end of the brake cabinet, and the output end of the brake cabinet is electrically connected with the motor.

4. The land oil rig electric control system based on the water-cooled frequency converter as claimed in claim 3, wherein a radiator is further arranged in the water-cooled cabinet;

the radiator is provided with a water outlet and a water return port, the water return port is provided with a water return pipeline, and the water outlet is provided with a water outlet pipeline;

the rectifier is provided with a first cooling water inlet pipe and a first cooling water outlet pipe, the inverter is provided with a second cooling water inlet pipe and a second cooling water outlet pipe, and the brake cabinet is provided with a third cooling water inlet pipe and a third cooling water outlet pipe;

the first cooling water inlet pipe, the second cooling water inlet pipe and the third cooling water inlet pipe are communicated with the water outlet pipeline;

the first cooling water outlet pipe, the second cooling water outlet pipe and the third cooling water outlet pipe are communicated with the water return pipeline.

5. The water-cooled frequency converter based land oil rig electric control system of claim 4, further comprising a control unit;

a first temperature sensor is arranged on the water outlet pipeline and is electrically connected with a first input end of the control unit, and a first output end of the control unit is electrically connected with an electromagnetic valve arranged on the water outlet pipeline and is used for controlling the opening and closing of the electromagnetic valve on the water outlet pipeline according to the temperature detected by the first temperature sensor;

be equipped with second temperature sensor on the return water pipeline, second temperature sensor with the second input electricity of control unit is connected, the second output of control unit is in with the setting solenoid valve electricity on the return water pipeline is connected for according to the temperature control that second temperature sensor detected opening and closing of solenoid valve on the return water pipeline.

6. The land oil-well rig electric control system based on the water-cooled frequency converter as claimed in claim 5, wherein a pressure sensor is further arranged on the water return pipeline;

the pressure sensor is electrically connected with a third input end of the control unit, and a third output end of the control unit is electrically connected with a pressure release valve arranged on the water return pipeline and used for controlling the opening and closing of the pressure release valve on the water return pipeline according to the pressure detected by the pressure sensor.

7. The land oil rig electric control system based on the water-cooled frequency converter as claimed in claim 5, further comprising a display, wherein a flow sensor is further arranged on the water return pipeline;

the flow sensor is electrically connected with a fourth input end of the control unit, and a fourth output end of the control unit is electrically connected with the display and used for sending the flow detected by the flow sensor to the display for displaying.

8. The water-cooled frequency converter-based land oil-well rig electric control system of claim 4, wherein a filter is arranged on the water outlet pipeline for filtering cooling water.

9. The water-cooled frequency converter-based land oil-well rig electric control system of claim 4, wherein a circulating pump is arranged on the water return pipeline.

10. The water-cooled frequency converter based land oil rig electric control system according to any one of claims 1 to 9, wherein when there are two electric motors in the rig, there are two frequency converters, both of which are electrically connected to the generator set;

the output ends of the two frequency converters are electrically connected with one motor.

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