CN215420028U - Double-winding synchronous motor - Google Patents
Double-winding synchronous motor Download PDFInfo
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- CN215420028U CN215420028U CN202122229203.6U CN202122229203U CN215420028U CN 215420028 U CN215420028 U CN 215420028U CN 202122229203 U CN202122229203 U CN 202122229203U CN 215420028 U CN215420028 U CN 215420028U
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Abstract
The utility model provides a double-winding synchronous motor, which comprises a main motor part and an exciter part connected with the main motor part; the main motor part comprises a shell, and a cold air generating device and a main motor which are arranged in the shell; the exciter part comprises a housing and an exciter arranged in the housing; one end of the housing is communicated with the shell through at least two cold air inlet pipes so that cold air generated by the cold air generating device enters the exciter part through the cold air inlet pipes; the other end of the housing is communicated with the shell through at least two hot air outlet pipes, so that the cold air is heated by the heat generated by the exciter part and then changed into hot air, and the hot air enters the main motor part through the hot air outlet pipes so as to be cooled by the cold air generating device. After the double-winding synchronous motor is applied, the temperature in the exciter housing is reduced by about 20 ℃ through the synchronous comparison, the running environment of the exciter is obviously improved, the fault rate of internal elements of the exciter is reduced by about 60%, the reliability and the availability of the compressor unit exciting motor are greatly improved, and the fault rate is greatly reduced.
Description
Technical Field
The utility model relates to the field of natural gas and other supercharging, in particular to a double-winding synchronous motor.
Background
The natural gas pressurization station in Shaanjing, second-line and Xingxian county adopts three centrifugal electric-driven compressor units to pressurize natural gas for a long-distance pipeline. The main driving motor is a double-winding synchronous motor produced by GE (the original country CONVERTEAM), the rated voltage is 4400V, the rated power is 17.2MW, and the rotor exciting current of the synchronous motor is provided by a rotary rectifying disc type exciter which is coaxial with the main motor. The exciter generates a large amount of heat in the process of generating alternating current and converting the alternating current into direct current exciting current by the rectifying disc, and the heat is radiated by a cooling system of the main motor.
All heat dissipation of the main motor and the exciter is performed by the top heat exchanger of the main motor, the rotor in the main motor rotates to bring heat to the top heat exchanger for cooling, and cooled cold air circulates through the bottoms of the two ends of the main motor. There is exciter ventilation cooling pore in main motor non-drive end bottom, and cold air, hot-air are flowed in and are flowed out by main motor non-drive bottom, and this will lead to exciter cooling heat transfer air volume little, and the exciter radiating effect is not good, and the temperature is higher in the exciter housing, and exciter operational environment is comparatively abominable, and exciter rotor part component moves under high temperature environment for a long time and leads to ageing with higher speed, and then burns out. For example, in 10 months 2015, the xingxian pressure gas station DY401 unit exciter rotor winding burnout event was well verified. In order to obtain the temperature condition in the exciter cover, different point positions on the exciter cover are respectively selected at 14:00 in 31 days in 8 months in 2016, and are measured by an infrared temperature measuring gun, the measurement result is that the temperature of cold air entering the exciter cover is 65.2 ℃, the temperature of the hot end in the exciter cover reaches 99.6 ℃, and the running environment of the exciter is severe.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome at least one defect of heat dissipation of an exciter for the existing motor, and provides a double-winding synchronous motor, wherein the temperature in an exciter cover shell is reduced by about 20 ℃, the running environment of the exciter is obviously improved, the fault rate of internal elements of the exciter is reduced by about 60%, the reliability and the availability of the exciter of a compressor unit are greatly improved, and the fault rate is greatly reduced.
The utility model provides a double-winding synchronous motor, which comprises a main motor part and an exciter part connected with the main motor part; wherein the content of the first and second substances,
the main motor part comprises a shell, and a cold air generating device and a main motor which are arranged in the shell;
the exciter part comprises a housing and an exciter arranged in the housing;
one end of the housing is communicated with the shell through at least two cold air inlet pipes, so that cold air generated by the cold air generating device enters the exciter part through the cold air inlet pipes;
the other end of the housing is communicated with the shell through at least two hot air outlet pipes, so that the cold air is heated by the heat generated by the exciter part and then is changed into hot air, and the hot air enters the main motor part through the hot air outlet pipes so as to be cooled by the cold air generating device.
Optionally, the double winding synchronous machine further comprises:
a first temperature sensor disposed within the enclosure configured to detect a cold end temperature within the enclosure;
a second temperature sensor disposed within the enclosure and configured to detect a hot end temperature within the enclosure;
at least two third temperature sensors, each of the third temperature sensors being disposed in a corresponding one of the cold air inlet duct or the inlet of the cold air inlet duct or the outlet of the cold air inlet duct to detect the temperature of the cold air;
at least two fourth temperature sensors, each of which is disposed in a corresponding one of the hot air outlet pipes or at an inlet of the hot air outlet pipe or at an outlet of the hot air outlet pipe to detect a temperature of the hot air; and
and the display device is arranged on the outer side of the housing and is electrically connected with the first temperature sensor, the second temperature sensor, each third temperature sensor and each fourth temperature sensor to display the temperature detected by the first temperature sensor, the second temperature sensor, each third temperature sensor and each fourth temperature sensor.
Optionally, the double winding synchronous machine further comprises:
at least two first flow sensors, each of the first flow sensors being disposed in a corresponding one of the cold air inlet pipes or at an inlet of the cold air inlet pipe or at an outlet of the cold air inlet pipe to detect a flow rate of the cold air; and
at least two second flow sensors, each second flow sensor being disposed in a corresponding one of the hot air outlet pipes or at an inlet of the hot air outlet pipe or at an outlet of the hot air outlet pipe to detect a flow rate of the hot air; and is
Each of the first flow sensors and each of the second flow sensors are electrically connected to the display device.
Optionally, each said first flow sensor and respective said third temperature sensor is an air flow temperature integral sensor;
each of the second flow sensors and the corresponding fourth temperature sensor is an air flow temperature integral sensor.
Optionally, the cold air inlet pipe and the hot air outlet pipe are both two;
the cold air inlet pipe is arranged at the upper end of the housing, and the hot air outlet pipe is arranged at the lower end of the housing.
Optionally, the exciter is a rotating commutator disc exciter, arranged coaxially with the main machine.
Optionally, the inner diameter of each cold air inlet pipe is 180mm to 220 mm.
Optionally, the display device is an explosion-proof box with a display instrument.
Optionally, the cold air generating device is disposed at the top of the inner side of the housing, and the cold air generating device includes a heat exchanger exchanging heat with the air flow.
The embodiment of the utility model has the following technical effects:
after the double-winding synchronous motor is applied, the temperature in the exciter housing is reduced by about 20 ℃ through the synchronous comparison, the running environment of the exciter is obviously improved, the failure rate of internal elements of the exciter is reduced by about 60%, the reliability and the availability of the compressor unit exciting motor are greatly improved, and the failure rate is greatly reduced. Maintenance cost caused by high internal temperature before the transformation of the cooling system of the exciter is up to 150 ten thousand yuan, the running state of the exciter is stable after the transformation, similar faults do not occur, and the cost is obviously reduced.
Furthermore, after the cooling air temperature, the flow sensor and the local display device are additionally arranged, the blank that the temperature of the cooling air in the exciter cannot be monitored in the past is filled, great convenience is brought to on-duty routing inspection and equipment management personnel, the temperature in the exciter housing can be observed at any time, the phenomenon that all systems related to the equipment break down is judged in advance, and corresponding measures are taken in advance, so that the stable operation of the equipment is ensured.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the utility model will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic block diagram of a dual winding synchronous machine provided by the present invention;
fig. 2 is a schematic structural view of a double winding synchronous motor provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Fig. 1 is a schematic structural view of a double-winding synchronous machine provided by the present invention, in which arrows may indicate the flow direction of cooling air. As shown in fig. 1, and with reference to fig. 2, an embodiment of the present invention provides a dual winding synchronous machine. The double-winding synchronous motor includes a main motor part 20 and an exciter part 30 connected to the main motor part 20. The main motor part 20 includes a housing 21, and a cold air generating device 23 and a main motor 22 provided in the housing 21. The exciter unit 30 includes a housing 31 and an exciter 32 provided in the housing 31. The cover 31 may be disposed on one side of the housing 21 and the exciter 32 is a rotating commutator disc exciter disposed coaxially with the main motor 22. One end of the housing 31 is communicated with the casing 21 through at least two cold air inlet pipes 33, so that the cold air generated by the cold air generating device 23 enters the exciter part 30 through the cold air inlet pipes 33. The other end of the housing 31 is communicated with the casing 21 through at least two hot air outlet pipes 34, so that the cold air is heated by the heat generated by the exciter unit 30, changed into hot air, enters the main motor unit 20 through the hot air outlet pipe 34, and is cooled by the cold air generating device 23.
According to the double-winding synchronous motor provided by the embodiment of the utility model, the heat dissipation efficiency of the exciter 32 is improved by increasing the ventilation pipeline of the exciter 32 and changing the cold air inlet channel of the exciter 32. After the double-winding synchronous motor is applied, the temperature in the shell 31 of the exciter 32 is reduced by about 20 ℃ through the synchronous comparison, the operating environment of the exciter 32 is obviously improved, the fault rate of the internal elements of the exciter 32 is reduced by about 60%, the reliability and the availability of the exciting motor of the compressor unit are greatly improved, and the fault rate is greatly reduced. Maintenance cost caused by high internal temperature before the transformation of the cooling system of the exciter 32 is as high as 150 ten thousand yuan, and the running state of the exciter 32 is stable after the transformation, similar faults do not occur, and the cost is obviously reduced.
In some preferred embodiments of the present invention, there are two cold air inlet pipes 33 and two hot air outlet pipes 34. The cold air inlet pipe 33 is disposed at the upper end of the housing 31, and the hot air outlet pipe 34 is disposed at the lower end of the housing 31. The diameter of the inner side of each cold air inlet pipe 33 is 180mm to 220 mm. The cold air generating device 23 is disposed at the top of the inner side of the housing 21, and the cold air generating device 23 includes a heat exchanger that exchanges heat with the air flow. It can also be understood that the cold air inlet channel of the exciter 32 designed originally is changed into the hot air return channel, namely the hot air outlet pipe 34, so that the hot air return channel is changed into two existing channels from the original channel, and the sectional area of the return channel is 2 times of the original design. The cold air inlet channel of the exciter 32 is directly led to the top of the shell 31 of the exciter 32 by a main motor cooler, the inlet channel consists of two circular pipelines with the diameter of about 200mm, and the sectional area of the inlet channel can be 4 times of that of the original design. The cooling air is sent into the exciter 32 from the cold air inlet pipe 33 at the top, and is fully circulated through the hot air outlet pipe 34 at the bottom after the heat exchange of the whole exciter 32, so that the heat dissipation efficiency of the exciter 32 is obviously improved.
In some embodiments of the present invention, the dual winding synchronous machine further comprises a first temperature sensor, a second temperature sensor, at least two third temperature sensors, at least two fourth temperature sensors, and a display device 35. A first temperature sensor is disposed within enclosure 31 and is configured to detect a cold end temperature within enclosure 31. The second temperature sensor is disposed in the housing 31 and configured to detect a hot end temperature in the housing 31. Each third temperature sensor is disposed in a corresponding cold air inlet pipe 33 or at an inlet of the cold air inlet pipe 33 or at an outlet of the cold air inlet pipe 33 to detect the temperature of the cold air. Each of the fourth temperature sensors is disposed in one corresponding hot air outlet pipe 34 or at an inlet of the hot air outlet pipe 34 or at an outlet of the hot air outlet pipe 34 to detect the temperature of the hot air. The display device 35 is disposed outside the housing 31, and is electrically connected to the first temperature sensor, the second temperature sensor, each third temperature sensor, and each fourth temperature sensor to display the temperatures detected by the first temperature sensor, the second temperature sensor, each third temperature sensor, and each fourth temperature sensor. Preferably, the display device 35 is an explosion-proof box with a display instrument.
Further, the double winding synchronous machine further comprises at least two first flow sensors and at least two second flow sensors. Each of the first flow sensors is disposed in a corresponding one of the cold air inlet pipes 33 or at an inlet of the cold air inlet pipe 33 or at an outlet of the cold air inlet pipe 33 to detect a flow rate of the cold air. Each second flow sensor is disposed in one corresponding hot air outlet pipe 34 or at an inlet of the hot air outlet pipe 34 or at an outlet of the hot air outlet pipe 34 to detect a flow rate of hot air. And each of the first flow sensors and each of the second flow sensors are electrically connected to the display device 35. Preferably, each first flow sensor and the respective third temperature sensor are mass airflow temperature integral sensors. Each second flow sensor and the corresponding fourth temperature sensor are mass airflow temperature integral sensors. The air flow and temperature integrated sensor is convenient to install, few in structural components and convenient to electrically connect.
The embodiment of the utility model can detect the temperature and the like in the housing 31 and display the real-time data of the sensor on site, namely, after the cooling air temperature, the flow sensor and the local display device 35 are additionally arranged, the blank that the temperature of the cooling air in the exciter 32 cannot be monitored in the past is filled, great convenience is brought to on-duty inspection and equipment management personnel, the temperature in the housing 31 of the exciter 32 can be observed at any time, the phenomenon that all systems related to the equipment have faults is predicted in advance, and corresponding measures are taken in advance, so that the stable operation of the equipment is ensured.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the utility model have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the utility model may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the utility model. Accordingly, the scope of the utility model should be understood and interpreted to cover all such other variations or modifications.
Claims (9)
1. A double-winding synchronous motor comprises a main motor part and an exciter part connected with the main motor part; it is characterized in that the preparation method is characterized in that,
the main motor part comprises a shell, and a cold air generating device and a main motor which are arranged in the shell;
the exciter part comprises a housing and an exciter arranged in the housing;
one end of the housing is communicated with the shell through at least two cold air inlet pipes, so that cold air generated by the cold air generating device enters the exciter part through the cold air inlet pipes;
the other end of the housing is communicated with the shell through at least two hot air outlet pipes, so that the cold air is heated by the heat generated by the exciter part and then is changed into hot air, and the hot air enters the main motor part through the hot air outlet pipes so as to be cooled by the cold air generating device.
2. The double-winding synchronous machine according to claim 1, further comprising:
a first temperature sensor disposed within the enclosure configured to detect a cold end temperature within the enclosure;
a second temperature sensor disposed within the enclosure and configured to detect a hot end temperature within the enclosure;
at least two third temperature sensors, each of the third temperature sensors being disposed in a corresponding one of the cold air inlet duct or the inlet of the cold air inlet duct or the outlet of the cold air inlet duct to detect the temperature of the cold air;
at least two fourth temperature sensors, each of which is disposed in a corresponding one of the hot air outlet pipes or at an inlet of the hot air outlet pipe or at an outlet of the hot air outlet pipe to detect a temperature of the hot air; and
and the display device is arranged on the outer side of the housing and is electrically connected with the first temperature sensor, the second temperature sensor, each third temperature sensor and each fourth temperature sensor to display the temperature detected by the first temperature sensor, the second temperature sensor, each third temperature sensor and each fourth temperature sensor.
3. The double-winding synchronous machine according to claim 2, further comprising:
at least two first flow sensors, each of the first flow sensors being disposed in a corresponding one of the cold air inlet pipes or at an inlet of the cold air inlet pipe or at an outlet of the cold air inlet pipe to detect a flow rate of the cold air; and
at least two second flow sensors, each second flow sensor being disposed in a corresponding one of the hot air outlet pipes or at an inlet of the hot air outlet pipe or at an outlet of the hot air outlet pipe to detect a flow rate of the hot air; and is
Each of the first flow sensors and each of the second flow sensors are electrically connected to the display device.
4. A double winding synchronous machine according to claim 3,
each of the first flow sensors and the corresponding third temperature sensors are air flow temperature integral sensors;
each of the second flow sensors and the corresponding fourth temperature sensor is an air flow temperature integral sensor.
5. A double winding synchronous machine according to claim 1,
the cold air inlet pipe and the hot air outlet pipe are two;
the cold air inlet pipe is arranged at the upper end of the housing, and the hot air outlet pipe is arranged at the lower end of the housing.
6. A double winding synchronous machine according to claim 1,
the exciter is a rotary rectifying disc type exciter and is arranged coaxially with the main motor.
7. A double winding synchronous machine according to claim 1,
the inner side diameter of each cold air inlet pipe is 180 mm-220 mm.
8. A double winding synchronous machine according to claim 2,
the display device is an explosion-proof box with a display instrument.
9. A double winding synchronous machine according to claim 1,
the cold air generating device is arranged at the top of the inner side of the shell and comprises a heat exchanger for exchanging heat with air flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122229203.6U CN215420028U (en) | 2021-09-15 | 2021-09-15 | Double-winding synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122229203.6U CN215420028U (en) | 2021-09-15 | 2021-09-15 | Double-winding synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215420028U true CN215420028U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122229203.6U Active CN215420028U (en) | 2021-09-15 | 2021-09-15 | Double-winding synchronous motor |
Country Status (1)
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|---|---|
| CN (1) | CN215420028U (en) |
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2021
- 2021-09-15 CN CN202122229203.6U patent/CN215420028U/en active Active
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Address after: 100101 Beijing city Chaoyang District Datun Road No. 9 Patentee after: National Pipe Network Group Beijing Pipeline Co.,Ltd. Address before: 100101 Beijing city Chaoyang District Datun Road No. 9 Patentee before: PETROCHINA BEIJING GAS PIPELINE CO.,LTD. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221122 Address after: Room 08-10, 6 / F, block a, No. 5, Dongtucheng Road, Chaoyang District, Beijing 100013 Patentee after: National Petroleum and natural gas pipeline network Group Co.,Ltd. Patentee after: National Pipe Network Group Beijing Pipeline Co.,Ltd. Address before: 100101 Beijing city Chaoyang District Datun Road No. 9 Patentee before: National Pipe Network Group Beijing Pipeline Co.,Ltd. |