Device for oil cooling control of permanent magnet motor bench test

Abstract

The utility model discloses a device for permanent magnet motor rack test oil cooling control, including the temperature control component for adjusting oil temperature, the oil inlet component for conveying oil to the motor, the oil outlet component for extracting oil in the motor and the oil storage component for storing oil, the temperature control component, oil inlet component, motor, oil outlet component and oil storage component are connected gradually and form closed loop oil circuit, the oil inlet component includes oil inlet pump, and the oil outlet component includes oil extraction pump, the device for permanent magnet motor rack test oil cooling control of the utility model, can effectively control the oil intake and output of motor through setting two oil pumps, and the oil amount in motor is adjusted conveniently, avoids the oil accumulation effectively, and the motor test efficiency and reliability are improved.

Description

Technical Field

[0001] This utility model belongs to the field of motor testing technology. Specifically, this utility model relates to a device for oil cooling control in permanent magnet motor bench testing. Background Technology

[0002] In the research and development and production of permanent magnet motors, bench testing is a crucial step in verifying the motor's performance, reliability, and durability. Among these components, the oil cooling system, as a core element ensuring the motor maintains a suitable operating temperature during testing, directly impacts the accuracy of test data and the safety of motor operation.

[0003] Currently, the oil-cooling control methods used in permanent magnet motor bench testing generally suffer from insufficient precision in adjusting the internal oil level. Existing devices mostly rely on a single oil circuit or a simple flow supply mode, making it difficult to accurately control the inlet and outlet oil flow rates according to different test conditions (such as motor load, speed, and test duration). This often results in excessively high or low oil levels inside the motor. When the oil level is too high, it not only increases the resistance to oil churning during motor operation, causing additional energy loss and reducing test efficiency, but may also affect the uniformity of heat dissipation inside the motor due to lubricant accumulation, thus interfering with temperature-related performance test data. When the oil level is too low, effective lubrication and cooling protection cannot be provided, which may lead to damage to motor components due to increased friction and excessive temperature, affecting the safety and continuity of the test.

[0004] Meanwhile, existing oil-cooling control devices lack effective mechanisms for preventing and quickly handling oil accumulation. During testing, due to the difficulty in precisely controlling the balance of inlet and outlet oil flow, oil easily accumulates inside the motor or in the connected test chamber. This oil accumulation not only increases the operating load on the motor but may also accelerate the aging of the lubricating oil, affecting the stability of lubrication performance and further reducing the reliability of the test.

[0005] Chinese patent application number 202311342879.3 discloses a calibration method and calibration test system for an oil-cooled motor. The method involves loading the oil-cooled motor under different ambient temperature conditions, calculating the overall operating condition information based on the mapping relationship between the ambient temperature and the motor temperature, adjusting the temperature and flow rate of the oil circuit in the oil-cooled motor according to the overall operating condition information during the loading test, and maintaining the oil-cooled motor in a preset operating state. The method records the temperature and flow rate adjustments of the oil circuit during the process of adjusting the oil-cooled motor to the preset operating state, obtains feedback adjustment parameters based on the mapping relationship between the overall operating condition information and the adjustment parameters, and inputs the feedback adjustment parameters into the motor controller. However, the technical solution disclosed in this patent document also fails to solve the aforementioned technical problems.

[0006] This invention provides a device for oil cooling control in permanent magnet motor bench testing, particularly concerning how to effectively control the oil inlet and outlet of the motor, and how to more conveniently adjust the oil volume inside the motor. Utility Model Content

[0007] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention provides a device for oil cooling control in permanent magnet motor bench testing, with the purpose of effectively controlling the oil flow into and out of the motor and facilitating the adjustment of the oil level within the motor.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a device for oil cooling control in permanent magnet motor bench testing, comprising a temperature control component for adjusting the oil temperature, an oil inlet component for conveying oil to the motor, an oil outlet component for extracting oil from the motor, and an oil storage component for storing oil.

[0009] The temperature control component, oil inlet component, motor, oil outlet component, and oil storage component are connected in sequence to form a closed-loop oil circuit; the oil inlet component includes an oil inlet pump, and the oil outlet component includes an oil pump.

[0010] The temperature control component includes a dual-effect water tower and a heat exchanger. The dual-effect water tower is interconnected with the heat exchanger, and the heat exchanger is connected to the oil storage component and the oil inlet component, respectively.

[0011] The oil inlet assembly also includes a flow meter, which is connected between the temperature control assembly and the oil inlet pump to measure the oil inlet flow rate.

[0012] The oil outlet assembly also includes an oil return pipe, one end of which is connected to the motor oil outlet, and the other end is connected to the oil pump.

[0013] The oil storage component is an oil tank, the input end of which is connected to the output end of the oil pump, and the output end of which is connected to the input end of the temperature control component.

[0014] The device also includes a manual valve, which is located in the closed-loop oil circuit and is used to regulate the oil flow.

[0015] This utility model relates to an oil cooling control device for permanent magnet motor bench testing. By setting two oil pumps, it can effectively control the amount of oil entering and leaving the motor, facilitate the adjustment of the amount of oil inside the motor, effectively avoid oil accumulation, and improve the testing efficiency and reliability of the motor. Attached Figure Description

[0016] This manual includes the following figures, which illustrate the following:

[0017] Figure 1 This is a schematic diagram of the structure of the device for oil cooling control of permanent magnet motor bench testing according to this utility model;

[0018] The following are marked in the diagram: 1. Hot and cold dual-effect water tower; 2. Heat exchanger; 3. Oil inlet pump; 4. Oil extraction pump; 5. Vent plug; 6. Flow meter; 7. Oil tank; 8. Manual valve; 9. Oil return pipe; 10. Motor. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of this utility model, and to facilitate its implementation.

[0020] like Figure 1 As shown, this utility model provides a device for oil cooling control in permanent magnet motor bench testing, including a temperature control component for regulating oil temperature, an oil inlet component for delivering oil to the motor, an oil outlet component for extracting oil from the motor, and an oil storage component for storing oil. The temperature control component, oil inlet component, motor, oil outlet component, and oil storage component are sequentially connected to form a closed-loop oil circuit. The oil inlet component includes an oil inlet pump 3, and the oil outlet component includes an oil extraction pump 4. Through the cooperation of the oil inlet pump 3 and the oil extraction pump 4, the amount of oil entering and leaving the motor can be effectively controlled, making it easier to adjust the amount of oil in the motor and effectively preventing oil accumulation.

[0021] Specifically, such as Figure 1 As shown, the temperature control component includes a dual-effect water tower 1 and a heat exchanger 2. The dual-effect water tower 1 and the heat exchanger 2 are interconnected, and the heat exchanger 2 is connected to both the oil storage component and the oil inlet component. The heat exchanger 2 is responsible for the heat exchange between the lubricating oil and the temperature-controlled water supplied by the dual-effect water tower 1.

[0022] like Figure 1 As shown, the oil inlet assembly also includes a flow meter 6, which is connected between the temperature control assembly and the oil inlet pump 3 and is used to measure the oil inlet flow rate of the oil inlet pump 3.

[0023] like Figure 1 As shown, the oil outlet assembly also includes an oil return pipe 9, one end of which is connected to the motor oil outlet, and the other end is connected to the oil pump 4. When the oil pump 4 is working, it can quickly extract the lubricating oil from the motor to reduce the amount of oil remaining in the motor, thereby reducing losses and increasing the efficiency of the motor.

[0024] like Figure 1 As shown, the oil storage component is an oil tank 7. The input end of the oil tank 7 is connected to the output end of the oil pump 4, and the output end of the oil tank 7 is connected to the input end of the heat exchanger 2.

[0025] like Figure 1As shown, the device for oil cooling control of permanent magnet motor bench testing also includes a manual valve 8, which is installed in the closed-loop oil circuit and used to regulate the oil flow. The manual valve 8 is located between the heat exchanger 2 and the flow meter 6. The oil inlet of the manual valve 8 is connected to the oil outlet of the heat exchanger 2, and the oil outlet of the manual valve 8 is connected to the flow meter 6.

[0026] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A device for oil-cooled control of permanent magnet motor bench testing, characterized in that: It includes a temperature control component for regulating the oil temperature, an oil inlet component for delivering oil to the motor, an oil outlet component for extracting oil from the motor, and an oil storage component for storing the oil. The temperature control component, oil inlet component, motor, oil outlet component, and oil storage component are connected in sequence to form a closed-loop oil circuit; the oil inlet component includes an oil inlet pump, and the oil outlet component includes an oil pump. The oil inlet assembly also includes a flow meter, which is connected between the temperature control assembly and the oil inlet pump to measure the oil inlet flow rate.

2. The apparatus according to claim 1, characterized in that, The temperature control component includes a dual-effect water tower and a heat exchanger. The dual-effect water tower is interconnected with the heat exchanger, and the heat exchanger is connected to the oil storage component and the oil inlet component, respectively.

3. The apparatus according to claim 1, characterized in that, The oil outlet assembly also includes an oil return pipe, one end of which is connected to the motor oil outlet, and the other end is connected to the oil pump.

4. The apparatus according to claim 1, characterized in that, The oil storage component is an oil tank, the input end of which is connected to the output end of the oil pump, and the output end of which is connected to the input end of the temperature control component.

5. The apparatus according to claim 1, characterized in that, It also includes a manual valve, which is installed in the closed-loop oil circuit and is used to regulate the oil flow.

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