CN210608970U - Water-cooling permanent magnet motor control system applied to mechanical drilling machine - Google Patents

Water-cooling permanent magnet motor control system applied to mechanical drilling machine Download PDF

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Publication number
CN210608970U
CN210608970U CN201922147564.9U CN201922147564U CN210608970U CN 210608970 U CN210608970 U CN 210608970U CN 201922147564 U CN201922147564 U CN 201922147564U CN 210608970 U CN210608970 U CN 210608970U
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motor
water
permanent magnet
controller
cooling permanent
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CN201922147564.9U
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刘洁生
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Huaxing Zhikong Beijing Energy Co Ltd
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Huaxing Zhikong Beijing Energy Co Ltd
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Abstract

The utility model discloses a be applied to water-cooling permanent magnet motor control system of mechanical drilling machine, including central controller, temperature control system, rectifier module, public direct current bus, motor controller group, water-cooling permanent magnet motor group and brake module, central controller passes through communication bus and is connected to temperature control system and motor controller group respectively, and temperature control system includes temperature controller and a plurality of temperature sensor, and the well site alternating current electric wire netting is connected to the alternating current side of temperature controller and rectifier module, and the direct current side of rectifier module is connected to on the public direct current bus; the motor controller group comprises a plurality of motor controllers, and the water-cooling permanent magnet motor group comprises a plurality of water-cooling permanent magnet motors connected in parallel; the brake module comprises a brake unit and a brake resistor; the device overcomes the problems of high installation cost, poor economical efficiency, poor stability, large equipment volume and inconvenient installation and transportation of the conventional mechanical drilling machine grid power system.

Description

Water-cooling permanent magnet motor control system applied to mechanical drilling machine
Technical Field
The utility model relates to an oil drilling equips technical field, especially relates to a be applied to mechanical drilling machine's water-cooling permanent magnet motor control system.
Background
Mechanical drilling machines typically employ multiple diesel engines to drive the drilling equipment through a chain case or a linkage machine in parallel. In recent years, the transformation of the mechanical drilling machine grid power is rapidly developed, and the mechanical drilling machine grid power is subjected to the development stages from constant-frequency motor driving, direct-current motor driving to alternating-current variable-frequency motor driving and the like, so that great contribution is made to the reduction of the petroleum drilling cost. The mechanical drilling machine network power system usually adopts a single high-power motor to replace an original diesel engine to provide power for a chain case or a linkage machine, the motor is independently prized, an electric control system is placed in an electric control room to carry out remote control, and operation and monitoring are inconvenient.
At present, a conventional mechanical drilling machine grid power system adopts a direct current motor or alternating current asynchronous motor driving mode, and has the problems of low motor efficiency and low power factor. Because the conventional mechanical drilling machine grid power system adopts a mode that a single high-power motor replaces an original diesel engine, once the motor or a driver fails, the power supply of the drilling machine is insufficient, and the production is influenced. The conventional mechanical drilling machine grid power system adopts an air cooling structure, so that the equipment volume is large, the control device must be installed in an electric control room, the equipment installation cost is high, and the transportation and the installation are inconvenient. In view of the problems of the existing mechanical drilling machine grid power system, the invention provides a water-cooling permanent magnet motor control system applied to a mechanical drilling machine.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a be applied to mechanical drilling machine's water-cooling permanent magnet machine control system, it is with high costs to overcome current mechanical drilling machine net electric system installation, uses economic nature poor, poor stability, and equipment is bulky, the inconvenient problem of installation transportation.
The utility model adopts the technical proposal that:
a water-cooling permanent magnet motor control system applied to a mechanical drilling machine comprises a central controller, a temperature control system, a rectification module, a public direct current bus, a motor controller group, a motor monitoring module, a water-cooling permanent magnet motor group and a brake module, wherein the central controller is respectively connected to the temperature control system and the motor controller group through communication buses; the motor controller group comprises a plurality of motor controllers, the water-cooling permanent magnet motor group comprises a plurality of water-cooling permanent magnet motors which are connected in parallel, the power receiving end of each motor controller is connected to a common direct current bus, the signal output end of one motor controller is connected to the controlled end of one water-cooling permanent magnet motor, and each motor controller corresponds to one water-cooling permanent magnet motor; the motor monitoring module comprises a temperature sensor and a rotary transformer, the temperature sensor and the rotary transformer are arranged in the water-cooling permanent magnet motor, and the signal output ends of the temperature sensor and the rotary transformer are connected to the motor controller; the brake module comprises a brake unit and a brake resistor, wherein the input side of the brake unit is connected to a common direct current bus, and the output side of the brake unit is connected with the brake resistor.
The rectifier module comprises an input reactor, a fast fuse and a rectifier bridge which are connected in sequence.
The utility model discloses an utilize the mode of many low power water-cooling permanent-magnet machine parallelly connected outputs, replace original diesel engine as the system power supply, make equipment can have higher efficiency and power factor at full power section. The permanent magnet motor and the motor controller are independently controlled in a group, and the water-cooling permanent magnet motor is driven in a one-to-one mode; meanwhile, the central controller controls the motor controller to work in a master machine mode or a slave machine mode, and a master-slave control mode is adopted, wherein the master machine works in a speed ring, and the slave machine works in a torque ring, so that a plurality of water-cooled permanent magnet motors can output the same rotating speed and torque to drive a load together. In addition, any motor controller can work in a master mode, and other motor controllers work in a slave mode, so that when any motor fails, other motors can work normally, and drilling production is prevented from being influenced.
Furthermore, the rectifier module adopts a water cooling mode, the design of an electric control room of a conventional mechanical drilling machine grid power system is cancelled, the equipment volume is reduced, and the equipment installation and transportation are simpler and more convenient.
Drawings
Fig. 1 is a schematic block diagram of the circuit of the present invention.
Detailed Description
As shown in fig. 1, the utility model discloses a central controller 9, temperature control system, rectifier module 1, public direct current bus 3, motor monitoring module, machine controller group, water-cooling permanent magnet motor group and brake module.
The central controller 9 is respectively connected to the temperature control system and the motor controller group through a communication bus, on one hand, receives the temperature information and the motor running state information sent by the temperature control system and the motor controller 4, and on the other hand, carries out corresponding judgment and control according to the sent information.
The temperature control system comprises a temperature controller 2, alternating current sides of the temperature controller 2 and a rectification module 1 are connected with a wellsite alternating current power grid, and a direct current side of the rectification module 1 is connected to a common direct current bus 3; the rectifier module 1 comprises an input reactor Q, a fast fuse FU and a rectifier bridge U which are connected in sequence.
The motor controller group comprises a plurality of motor controllers 4, the water-cooling permanent magnet motor group comprises a plurality of water-cooling permanent magnet motors 5 which are connected in parallel, the power receiving end of each motor controller 4 is connected to the common direct current bus 3, the signal output end of one motor controller 4 is connected to the controlled end of one water-cooling permanent magnet motor 5, and each motor controller 4 corresponds to one water-cooling permanent magnet motor 5; the motor monitoring module 6 comprises a temperature sensor and a rotary transformer, the temperature sensor and the rotary transformer are arranged in the water-cooling permanent magnet motor, and the signal output ends of the temperature sensor and the rotary transformer are connected to a motor controller; the motor monitoring module 6 is equivalent to a feedback device of a motor, and the rotary transformer is used for speed feedback and accurately controlling the rotating speed of the motor; the temperature sensor is used for detecting the temperature of the motor, feeding the temperature to the motor controller 4 in real time and finally feeding the temperature to the central controller 9, the central controller 9 sends an instruction signal to the temperature controller 2, the temperature controller 2 acts and is matched with a cooling pipeline system to carry out cooling treatment.
The brake module comprises a brake unit 7 and a brake resistor 8, wherein the input side of the brake unit 7 is connected to the common direct current bus 3, and the output side of the brake unit 7 is connected with the brake resistor 8.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The rectifier bridge U in the rectifier module 1 is mainly used to rectify the grid power into a dc power supply and provide the dc power supply for the motor controller group. The rectifier module 1 is internally provided with a fast fuse FU for protecting equipment safety when a system has a short-circuit fault; an input reactor Q is built in for improving the power factor of the permanent magnet motor controller 4 and suppressing harmonic currents.
The temperature control system configures the hardware device: the water-cooling heat radiator and the water-cooling circulating device are used for controlling water-cooling heat radiation. Firstly, a plurality of temperature sensors collect the temperature of the motor, the collected temperature is sent to the motor controller 4, then the motor controller 4 sends information to the central controller 9, the central controller 9 carries out judgment and analysis, finally the decision information is sent to the temperature controllers 2, and the temperature controllers 2 control the operation of the water-cooling radiator and the water-cooling circulation device, the start and stop of the device, the acceleration and deceleration of water-cooling flow and the like. Thereby carrying out effective cooling treatment to the motor. Reduce the noise, raise the efficiency. The temperature controller 2 can adopt an MTC-6020 type temperature controller 2.
The common direct current bus 3 is mainly used for providing direct current power rectified by the rectifying module 1 for the plurality of permanent magnet motor controllers 4.
The central controller 9 is mainly used for controlling all the elements of the device to work together. The central controller 9 can read the running state of the permanent magnet motor controller 4 through the communication bus, such as parameters of output frequency, output current, controller temperature, water-cooling permanent magnet motor 5 temperature and the like, and can also send instructions to control the start and stop of the permanent magnet motor controller 4 and the like.
The motor controller 4 adopts a KTZ-54 motor controller 4 which comprises a power unit, a driving unit, a sampling unit, a communication unit and the like. The direct current side of the motor controller 4 is connected with a common direct current bus 3, the alternating current side is connected with a water-cooling permanent magnet motor 5, and the communication unit is connected with a central controller 9 through a communication bus. The central controller 9 controls the motor controller 4 to work in a master mode or a slave mode, and a master-slave control mode is adopted, wherein the master works in a speed ring, and the slave works in a torque ring, so that the plurality of water-cooled permanent magnet motors 5 can output the same rotating speed and torque to drive a load together. In addition, any motor controller 4 can work in a master mode, and other motor controllers 4 work in a slave mode, so that when any motor fails, other motors can work normally, and the drilling production is prevented from being influenced. The motor controller 4 is mainly used for driving the water-cooled permanent magnet motor 5 to operate, and accurately controls the rotating speed of the motor through a rotary transformer arranged on the water-cooled permanent magnet motor 5, namely the rotating speed of the motor is controlled through a control mode of frequency conversion and speed regulation; and the water-cooled permanent magnet motor 5 is driven in a one-to-one manner.
Meanwhile, the temperature of the motor is detected by a temperature probe installed on the water-cooled permanent magnet motor 5 and is sent to the central controller 9.
The brake module mainly includes: an IPC-DR-6HA-6 type brake unit 7 and a brake resistor 8. The input side of the brake unit 7 is connected to the common dc bus 3, and the output side is connected to the brake resistor 8. The braking unit 7 is matched with the braking resistor 8 and used for consuming feedback energy when the motor decelerates and avoiding equipment halt caused by overhigh voltage of the common direct current bus 3.
The utility model adopts the water-cooling permanent magnet motor 5, the magnetic field of the permanent magnet motor is generated by the permanent magnet, thereby reducing the loss of the asynchronous motor or the direct current motor caused by the exciting current; meanwhile, the permanent magnet motor has a higher power factor, so that the current is smaller when the same power is output, the heat loss is smaller, and compared with an alternating current asynchronous motor and a direct current motor, the permanent magnet motor has higher efficiency in a full-power section, the energy consumption of equipment can be reduced, and the economic benefit of petroleum drilling is effectively improved. The water-cooling permanent magnet motor 5 and the motor controller 4 have smaller power and large production batch, and compared with a single high-power device, the purchasing cost is lower.
The utility model discloses a theory of operation: the rectification module 1 rectifies the network power into a direct current power supply to provide the direct current power supply for the motor controller group. The dc power supply supplies power to the motor controller 4. A plurality of water-cooled permanent magnet motors 5 are connected in parallel, the number and the combination of the motors can be selected according to the load condition, the central controller 9 sends signals to the corresponding motor controllers 4, when the load is small, part of the motors run idle, and the loss of the motors is reduced. Meanwhile, the phenomenon that production is influenced by equipment halt caused by the fault of a single high-power motor can be avoided.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims (2)

1. The utility model provides a water-cooling permanent-magnet machine control system for mechanical drilling machine which characterized in that: the system comprises a central controller, a temperature control system, a rectification module, a public direct current bus, a motor controller group, a motor monitoring module, a water-cooling permanent magnet motor group and a brake module, wherein the central controller is respectively connected to the temperature control system and the motor controller group through a communication bus; the motor controller group comprises a plurality of motor controllers, the water-cooling permanent magnet motor group comprises a plurality of water-cooling permanent magnet motors which are connected in parallel, the power receiving end of each motor controller is connected to a common direct current bus, the signal output end of one motor controller is connected to the controlled end of one water-cooling permanent magnet motor, and each motor controller corresponds to one water-cooling permanent magnet motor; the motor monitoring module comprises a temperature sensor and a rotary transformer, the temperature sensor and the rotary transformer are arranged in the water-cooling permanent magnet motor, and the signal output ends of the temperature sensor and the rotary transformer are connected to the motor controller; the brake module comprises a brake unit and a brake resistor, wherein the input side of the brake unit is connected to a common direct current bus, and the output side of the brake unit is connected with the brake resistor.
2. The water-cooled permanent magnet motor control system applied to the mechanical drilling machine as claimed in claim 1, wherein: the rectifier module comprises an input reactor, a fast fuse and a rectifier bridge which are connected in sequence.
CN201922147564.9U 2019-12-04 2019-12-04 Water-cooling permanent magnet motor control system applied to mechanical drilling machine Active CN210608970U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922147564.9U CN210608970U (en) 2019-12-04 2019-12-04 Water-cooling permanent magnet motor control system applied to mechanical drilling machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922147564.9U CN210608970U (en) 2019-12-04 2019-12-04 Water-cooling permanent magnet motor control system applied to mechanical drilling machine

Publications (1)

Publication Number Publication Date
CN210608970U true CN210608970U (en) 2020-05-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201922147564.9U Active CN210608970U (en) 2019-12-04 2019-12-04 Water-cooling permanent magnet motor control system applied to mechanical drilling machine

Country Status (1)

Country Link
CN (1) CN210608970U (en)

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