CN211981653U - Variable-frequency energy-saving motor for coal-bed gas well - Google Patents
Variable-frequency energy-saving motor for coal-bed gas well Download PDFInfo
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- CN211981653U CN211981653U CN201922347841.0U CN201922347841U CN211981653U CN 211981653 U CN211981653 U CN 211981653U CN 201922347841 U CN201922347841 U CN 201922347841U CN 211981653 U CN211981653 U CN 211981653U
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Abstract
The utility model provides a frequency conversion energy-saving motor used in coal bed gas well, the weight of which is only half of the original slip motor, the volume is reduced, and the installation and the maintenance are more convenient; the novel fixing mode is adopted, the belt pulley is directly connected with the output shaft of the motor, and only the excitation part needs to be removed for the well site using the existing slip motor; an independent fan is added to the dragging motor, so that the problem of integral heat dissipation of the motor can be solved; when the power frequency is started, the rated current of the motor is 7-8 times, the voltage fluctuation damage to a power grid is large, the line loss and the variation loss are increased, and after the variable frequency soft start is adopted, the starting current can be fully reduced, the impact of the power grid is reduced, the bearing capacity of a motor winding is improved, and the maintenance cost of the motor is reduced; the variable frequency control technology is adopted, so that the power consumption of the motor is directly reduced, and the energy-saving effect is achieved. The device has low cost, simple maintenance and use and cost saving.
Description
Technical Field
The patent relates to the technical field of coal bed gas drainage and production, in particular to a variable-frequency energy-saving motor for a coal bed gas well.
Background
The slip motor is large in size, inconvenient to install, large in starting current by adopting a full-voltage starting mode, large in power consumption, high in gas production cost, and also prone to being eliminated, and is not beneficial to future production. According to statistics, more than 80% of the gas wells adopt the large-size slip motor in the drainage and production process of the water-logging block coal bed gas wells. On one hand, the equipment maintenance rate is high, and the extraction cost is high; on the other hand, gas well production efficiency is not optimized.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a research is for solving the poor smooth motor power consumption of coal bed gas well site big, the high problem of maintenance rate.
For solving the above technical problem, the technical scheme of the utility model as follows:
the utility model provides a frequency conversion energy-saving motor that coal bed gas well used, includes: the motor comprises a motor main body and a frequency conversion cabinet; the motor main body comprises a belt pulley, a motor output shaft, a dragging motor, a motor cooling fan, a motor base, a motor wiring cavity and a cooling fan wiring cavity (7); the frequency conversion cabinet comprises a frequency converter, a control panel, a cooling fan, a brake resistor, a power supply incoming line terminal, a motor cooling fan outgoing line terminal and a motor load terminal; a connecting cavity is fixedly arranged at the position where the belt pulley is connected with the output shaft of the motor, one end of the output shaft of the motor is fixedly connected with the dragging motor, the other end of the output shaft of the motor penetrates through the base of the motor and is connected with the connecting cavity of the belt pulley, the connecting cavity of the belt pulley is connected with the output shaft of the motor in an interference fit manner, and a clamp spring for fastening the output shaft of the motor is; the dragging motor is fixed on the motor base and is fixedly connected with the motor cooling fan, and the motor wiring cavity and the cooling fan wiring cavity are respectively arranged on the dragging motor and the motor cooling fan; the frequency conversion cabinet is provided with a frequency converter and a control panel for controlling the frequency converter, a cooling fan, a brake resistor, a power supply inlet terminal, a motor cooling fan outlet terminal and a motor load terminal are arranged on the frequency conversion cabinet, the power supply inlet terminal is connected with a power frequency 380V alternating current power supply and a working zero line, the motor cooling fan outlet terminal is connected with a cooling fan wiring cavity, and the motor load terminal is connected with a motor wiring cavity.
The belt pulley connecting cavity is internally provided with a flat key to prevent the motor output shaft and the belt pulley from falling off, so that the motor output shaft and the belt pulley can better transmit torque.
The motor base is formed by welding two iron plates with the thickness of 15mm and is used for fixing the dragging motor and the base of the oil pumping unit.
Compared with the prior art, the variable-frequency energy-saving motor used in the coal bed gas well has the advantages that the weight is only half of that of the original slip motor, the size is reduced, and the installation and the maintenance are more convenient; the novel fixing mode is adopted, the belt pulley is directly connected with the output shaft of the motor, and only the excitation part needs to be removed for the well site using the existing slip motor; an independent fan is added to the dragging motor, so that the problem of integral heat dissipation of the motor can be solved; when the power frequency is started, the rated current of the motor is 7-8 times, the voltage fluctuation damage to a power grid is large, the line loss and the variation loss are increased, and after the variable frequency soft start is adopted, the starting current can be fully reduced, the impact of the power grid is reduced, the bearing capacity of a motor winding is improved, and the maintenance cost of the motor is reduced; the electromagnetic clutch of the traditional slip motor has large eddy current loss, namely, after the motor is started to reach the full rotating speed, the rotating speed is reduced by the excitation part to realize low-speed extraction, and the power consumption of the motor is directly reduced by adopting a variable frequency control technology, so that the energy-saving effect is achieved. The device has low cost, simple maintenance and use and cost saving.
Drawings
Fig. 1 is a schematic structural diagram of a variable-frequency energy-saving motor used in a coal-bed gas well according to the present invention.
Fig. 2 is a schematic diagram of a belt pulley connection cavity of a belt pulley connection motor output shaft of a variable-frequency energy-saving motor used in a coal-bed gas well.
Detailed Description
To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the utility model provides a frequency conversion energy-saving motor that coal bed gas well used, include: the motor comprises a motor main body and a frequency conversion cabinet; the motor main body comprises a belt pulley 1, a motor output shaft 2, a dragging motor 3, a motor cooling fan 4, a motor base 5, a motor wiring cavity 6 and a cooling fan wiring cavity 7; the frequency conversion cabinet comprises a frequency converter 8, a control panel 9, a cooling fan 10, a brake resistor 11, a power supply inlet terminal 12, a motor cooling fan outlet terminal 13 and a motor load terminal 14; a belt pulley connecting cavity 16 is fixedly arranged at the position where the belt pulley 1 is connected with the motor output shaft 2, one end of the motor output shaft 2 is fixedly connected with the dragging motor 3, the other end of the motor output shaft penetrates through the motor base 5 to be connected with the belt pulley connecting cavity 16, the belt pulley connecting cavity 16 is connected with the motor output shaft 2 in an interference fit mode, and a clamp spring 15 used for fastening the motor output shaft 2 is arranged between contact positions; the dragging motor 3 is fixed on the motor base 5 and is fixedly connected with the motor cooling fan 4, and the motor wiring cavity 6 and the cooling fan wiring cavity 7 are respectively arranged on the dragging motor 3 and the motor cooling fan 4; the frequency conversion cabinet is provided with a frequency converter 8 and a control panel 9 for controlling the frequency converter 8, a cooling fan 10, a brake resistor 11, a power supply inlet terminal 12, a motor cooling fan outlet terminal 13 and a motor load terminal 14 are arranged on the frequency conversion cabinet, the power supply inlet terminal 12 is connected with a power frequency 380V alternating current power supply and a working zero line, the motor cooling fan outlet terminal 13 is connected with a cooling fan wiring cavity 7, and the motor load terminal 14 is connected with a motor wiring cavity 6.
The frequency converter 8 has the advantages of speed regulation, high power factor, energy conservation, high reliability and the like; the control panel 9 sets the parameters of the frequency converter to realize protection of overcurrent, overvoltage, undervoltage, power supply phase failure, ground short circuit and the like; the cooling fan 10 effectively cools the brake resistor; the braking resistor 11 helps the electric motor to convert its regenerative electric energy generated by the quick stop into heat energy.
The rim of the belt pulley 1 is provided with a belt which is connected with a reducer of the pumping unit, and the hub is communicated and fixed with the output shaft 2 of the motor. The motor base 5 is directly fixed on the pumping unit base.
A flat key 17 is arranged in a cavity of the belt pulley connecting cavity 16 to prevent the motor output shaft 2 and the belt pulley 1 from falling off, so that the motor output shaft 2 and the belt pulley 1 can better transmit torque.
The motor base 5 is formed by welding two iron plates with the thickness of 15mm and is used for fixing the dragging motor 3 and the pumping unit base.
Referring to fig. 2, the pulley 1 is connected to the output shaft 2 of the motor in a novel fixing manner. The motor output shaft 2 completely passes through the belt pulley connecting cavity 16 in the figure 2, and the snap spring 15 in the figure 2 is used for performing snap spring reinforcement on the protruded motor output shaft 2, so that accidents caused by falling off of the belt pulley 1 in the operation process are prevented; a flat key is arranged in the pulley connecting cavity 16, so that the motor output shaft 2 and the pulley 1 can better transmit torque.
The utility model discloses according to coal bed gas row production well water yield size adjustment drag motor 3's rotational speed, observe all normal backs of drainage, can leave.
Specifically, the original excitation part and the fan cover of the motor are removed from the motor; the dragging motor 3 is fixed on a motor base 5 through four bolts; a new belt pulley 1 is installed on an output shaft 2 of the motor, and a flat key and a clamp spring are additionally installed on the belt pulley 1; the other end of the dragging motor 3 is additionally provided with a motor cooling fan 4;
a power frequency 380V alternating current power supply and a working zero line are input into a power inlet terminal 12 of the variable frequency control cabinet; the motor cooling fan outlet terminal 13 is connected with the cooling fan wiring cavity 7 in the figure 1, and the output power supply is a power frequency 380V alternating current power supply; the motor load terminals 14 are connected to the motor wiring cavity 6 of fig. 1.
And (3) debugging: the brake of the oil pumping unit is released, the frequency converter is started to control the motor to be slowly started, the rotating speed of the dragging motor is adjusted through the control panel 9, the running condition of the cooling fan 4 of the motor is checked, the water yield of a wellhead is observed, and the well site can be separated after all equipment is normally operated.
Finally, it should be noted that: while the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (3)
1. A frequency conversion energy-saving motor for a coal-bed gas well is characterized by comprising: the motor comprises a motor main body and a frequency conversion cabinet; the motor main body comprises a belt pulley (1), a motor output shaft (2), a dragging motor (3), a motor cooling fan (4), a motor base (5), a motor wiring cavity (6) and a cooling fan wiring cavity (7); the frequency conversion cabinet comprises a frequency converter (8), a control panel (9), a cooling fan (10), a brake resistor (11), a power supply inlet terminal (12), a motor cooling fan outlet terminal (13) and a motor load terminal (14); a belt pulley connecting cavity (16) is fixedly arranged at the position where the belt pulley (1) is connected with the motor output shaft (2), one end of the motor output shaft (2) is fixedly connected with the dragging motor (3), the other end of the motor output shaft penetrates through the motor base (5) to be connected with the belt pulley connecting cavity (16), the belt pulley connecting cavity (16) is connected with the motor output shaft (2) in an interference fit mode, and a clamp spring (15) used for fastening the motor output shaft (2) is arranged between contact positions; the dragging motor (3) is fixed on the motor base (5) and is fixedly connected with the motor cooling fan (4), and the motor wiring cavity (6) and the cooling fan wiring cavity (7) are respectively arranged on the dragging motor (3) and the motor cooling fan (4); the frequency conversion cabinet is provided with a frequency converter (8) and a control panel (9) for controlling the frequency converter (8), a cooling fan (10), a brake resistor (11), a power supply inlet terminal (12), a motor cooling fan outlet terminal (13) and a motor load terminal (14) are arranged on the frequency conversion cabinet, the power supply inlet terminal (12) is connected with a power frequency 380V alternating current power supply and a working zero line, the motor cooling fan outlet terminal (13) is connected with a cooling fan wiring cavity (7), and the motor load terminal (14) is connected with a motor wiring cavity (6).
2. The variable-frequency energy-saving motor for the coal-bed gas well is characterized in that a flat key (17) is arranged in the cavity of the belt pulley connecting cavity (16) to prevent the motor output shaft (2) and the belt pulley (1) from falling off, so that the motor output shaft (2) and the belt pulley (1) can transmit torque better.
3. The variable-frequency energy-saving motor for the coal-bed gas well is characterized in that the motor base (5) is formed by welding two iron plates with the thickness of 15mm and is used for fixing the dragging motor (3) and the pumping unit base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922347841.0U CN211981653U (en) | 2019-12-24 | 2019-12-24 | Variable-frequency energy-saving motor for coal-bed gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922347841.0U CN211981653U (en) | 2019-12-24 | 2019-12-24 | Variable-frequency energy-saving motor for coal-bed gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211981653U true CN211981653U (en) | 2020-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922347841.0U Active CN211981653U (en) | 2019-12-24 | 2019-12-24 | Variable-frequency energy-saving motor for coal-bed gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211981653U (en) |
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2019
- 2019-12-24 CN CN201922347841.0U patent/CN211981653U/en active Active
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