Armature electrical performance test tool in oil environment
By designing a fixture for testing the electrical properties of an armature in an oil environment, the accuracy problem of PDIV numerical measurement of an oil-cooled armature in an actual cooling oil environment is solved, and an accurate evaluation of the insulation performance of the armature is achieved, which is suitable for small-batch testing.
Patent Information
- Application Number
- CN202422815087.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-19
AI Technical Summary
In the existing technology, partial discharge testing of oil-cooled armatures is carried out at room temperature and normal humidity, which cannot accurately evaluate their insulation performance in the actual cooling oil environment and lacks the PDIV testing capability under oil-resistant conditions.
An armature electrical performance test fixture was designed for an oil-cooled motor. The fixture included an armature container, a heating box, a funnel, a temperature sensor, an oil guide ring, a circulating pump and other components. The fixture simulated the actual operating conditions of an oil-cooled motor and, combined with the PDIV detection equipment, achieved PDIV value measurement of the armature under actual operating conditions.
It can accurately measure the PDIV value under the actual operating conditions of simulated oil-cooled motors. It is suitable for early insulation system evaluation and small-batch testing, and improves the accuracy of insulation structure assessment.
Smart Images
Figure CN223426796U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of physics, in particular to a motor testing technology, in particular to an armature electrical performance testing tool in an oil environment. Background Art
[0002] In the partial discharge test of oil-cooled armatures, the traditional test method in the prior art is to test at room temperature and normal humidity. This can determine the PDIV test value of the armature in a normal laboratory environment. However, during the actual operation of the motor, due to the influence of more complex environmental factors such as cooling oil and temperature, the actual PDIV value of the armature will inevitably deviate from the value in the laboratory environment. During the evaluation of the armature insulation structure, it is impossible to accurately evaluate the actual performance of the insulation system. This is not conducive to the evaluation of the insulation structure. In addition, the existing partial discharge equipment does not have the ability to test PDIV in an oil-resistant state, making it difficult to achieve accurate armature-level oil-resistant PDIV testing capabilities. Summary of the Invention
[0003] The purpose of the present utility model is to provide an armature electrical performance testing tool in an oil environment, which is intended to solve the technical problem in the prior art that it is difficult to accurately measure the PDIV value of the armature in a cooling oil environment.
[0004] The utility model discloses an armature electrical performance test tool in an oil environment, comprising an armature container and a heating box, wherein a funnel is provided above the armature container, a temperature sensor is provided in the funnel, an oil inlet is provided on the funnel, an oil outlet is provided at the bottom of the funnel, the oil outlet is connected to an oil guide ring, an oil tank is provided in the heating box, and the oil tank is connected to the oil inlet of the funnel through an oil outlet pipe and a circulation pump.
[0005] Furthermore, a temperature probe is provided in the oil tank.
[0006] Furthermore, a heat-resistant fixing bracket is provided in the armature container.
[0007] Furthermore, the heating box is provided with an electric heating coil, which is wound around the oil tank.
[0008] Furthermore, a water tank is provided in the heating box, a spiral water pipe is provided in the water tank, the spiral water pipe is wound around the oil tank, and the spiral water pipe is connected to the water cooler through the water cooler water pipe and the water cooler stop valve.
[0009] Furthermore, the two sides of the funnel are connected to the armature container through a height adjustment bracket, a vertical first waist-shaped hole is provided on the upper part of the height adjustment bracket, the funnel is connected to the first waist-shaped hole through bolts, and horizontal second waist-shaped holes are provided on both sides of the armature container, and the lower end of the height adjustment bracket is connected to the second waist-shaped hole through bolts.
[0010] Further, the funnel lower side is fixed with the oil guide ring through the mounting clamp.
[0011] Further, the oil guide ring is provided with the flow valve between the funnel.
[0012] Further, the circulating pump is a peristaltic pump.
[0013] Further, the heating box is provided with the heat preservation layer.
[0014] Further, the oil tank is provided with the oil tank cover.
[0015] Compared with the prior art, the effect of the utility model is positive and obvious.The utility model has simple structure, convenient installation, can simulate the actual operation condition of oil-cooled motor, has heating and temperature control functions, and can more accurately measure the PDIV value of oil-cooled motor in the actual operation process by cooperating with the PDIV detection equipment, and is suitable for early insulation system evaluation and small batch testing. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a schematic view of the armature electrical performance test tool under the oil environment.
[0017] Figure 2 It is a schematic view of the funnel and armature container in the armature electrical performance test tool under the oil environment.
[0018] Figure 3 It is a sectional view schematic view of the oil tank and heating box in the armature electrical performance test tool under the oil environment.
[0019] Figure 4 It is a three-dimensional schematic view of the oil tank and heating box in the armature electrical performance test tool under the oil environment. DETAILED DESCRIPTION
[0020] The utility model is further described below in combination with embodiments, but the utility model is not limited to the embodiments, and any similar change of the utility model should be included in the protection scope of the utility model.The use of up, down, front, back, left, right, middle, inside and outside in the utility model is only for convenient and clear description, and is not a limitation on the technical scheme of the utility model.
[0021] For example, Figures 1-4As shown, the utility model is an armature electrical performance test tool in an oil environment, including an armature container 4 and a heating box 21, a funnel 1 is provided above the armature container 4, a temperature sensor (not shown in the figure) is provided in the funnel 1, an oil inlet 5 is provided on the funnel 1, an oil outlet is provided at the bottom of the funnel 1, the oil outlet is connected to the oil guide ring 2, an oil tank 8 is provided in the heating box 21, and the oil tank 8 is connected to the oil inlet 5 of the funnel 1 through an oil outlet pipe 11 and a circulating pump 14.
[0022] Furthermore, a temperature probe is provided in the oil tank 8 .
[0023] Furthermore, a heat-resistant fixing bracket is provided in the armature container 4 .
[0024] Furthermore, an electric heating coil is provided in the heating box 21 , and the electric heating coil is wound around the oil tank 8 .
[0025] Furthermore, a water tank is provided in the heating box 21 , and a spiral water pipe 9 is provided in the water tank. The spiral water pipe 9 is wound around the oil tank 8 , and the spiral water pipe 9 is connected to the water cooler 13 through the water cooler water pipe 12 and the water cooler stop valve 15 .
[0026] Furthermore, the two sides of the funnel 1 are connected to the armature container 4 through a height adjustment bracket 3, a vertical first waist-shaped hole 19 is provided on the upper part of the height adjustment bracket 3, and the funnel 1 is connected to the first waist-shaped hole 19 through bolts, and horizontal second waist-shaped holes 20 are respectively provided on both sides of the armature container 4, and the lower end of the height adjustment bracket 3 is connected to the second waist-shaped hole 20 through bolts.
[0027] Furthermore, the oil guide ring 2 is fixed to the lower side of the funnel 1 via a mounting clamp 17 .
[0028] Furthermore, a flow valve 18 is provided between the oil guide ring 2 and the funnel 1 .
[0029] Furthermore, the circulation pump 14 is a peristaltic pump.
[0030] Furthermore, a heat-insulating layer 10 is provided in the heating box 21 .
[0031] Specifically, the oil tank 8 is provided with an oil tank cover 7 .
[0032] Specifically, the funnel 1 is a square funnel.
[0033] Specifically, the armature container 4, heating box 21, funnel 1, temperature sensor, oil guide ring 2, oil tank 8, temperature probe, circulation pump 14, electric heating coil, spiral water pipe 9, water cooler stop valve 15, water cooler 13, flow valve 18, peristaltic pump, insulation layer 10, etc. in this embodiment all adopt well-known solutions in the prior art, which are well understood by those skilled in the art and will not be described in detail here.
[0034] The working principle of this embodiment is as follows:
[0035] 1. Top refueling funnel 1
[0036] The cooling oil drips into the armature container 4 below through the funnel 1. The temperature sensor in the funnel 1 monitors the cooling oil temperature. During the test, the state of the oil spraying onto the armature 6 along the oil guide ring 2 is simulated.
[0037] 2. Armature container 4
[0038] The armature container 4 is used to store the armature 6 and collect dripping cooling oil. The armature 6 is immersed in the cooling oil in the armature container 4. The heat-resistant fixing bracket is used to fix the test armature 6 to prevent the armature 6 from rolling in the armature container 4.
[0039] 3. Temperature controlled oil tank 8
[0040] The oil tank 8 is used to store and heat the cooling oil through the heating box 21. The temperature probe measures the oil temperature. The oil temperature can be manually controlled by the heating box 21 or automatically controlled by the controller.
[0041] 4. Compatible with PDIV equipment
[0042] The overall tooling has an appropriate size and can be placed in the entire PDIV test equipment isolation cabinet, and the armature 6 can be placed in an isolated environment for PDIV testing.
[0043] 5. Simulate the actual operating environment of oil-cooled motor
[0044] During the test, the heating box 21 heats the cooling oil in the oil tank 8 to the operating temperature, and the heated cooling oil is sent to the funnel 1 through the circulating pump 14. The oil flows down through the oil outlet of the funnel 1 to the oil guide ring 2. The oil guide ring 2 diverts the oil and sprinkles it on the armature 6. The flow rate of the cooling oil can be controlled by adjusting the flow valve 18. At the same time, the entire armature 6 is immersed in the cooling oil, simulating the armature 6 being half-submerged in the cooling oil in the motor. The test chuck is connected to the three phases of the armature. When the armature 6 and the cooling oil are at the operating temperature, the PDIV test is performed. At this time, the PDIV value of the armature 6 under the actual operating state in the motor can be measured.
[0045] The water cooler 13 adjusts the temperature of the water in the water tank through the spiral water pipe 9, while also heating the oil tank 8. When conducting electrical performance tests at low temperatures, the water cooler cools the water to the specified temperature, then opens the water cooler stop valve 15, cooling the water in the water tank through the water cooler pipe 12 and the spiral water pipe 9, thereby cooling the oil in the oil tank 8.
[0046] The first waist-shaped hole 19 and the second waist-shaped hole 20 are used to fix and adjust the height and position of the funnel 1 so that the position of the oil guide ring 2 relative to the armature is consistent with the actual product.
[0047] The utility model has a simple structure and is easy to install. It can simulate the actual operating conditions of oil-cooled motors and has heating and temperature control functions. When used with PDIV detection equipment, it can more accurately measure the PDIV value of oil-cooled motors during actual operation. It is suitable for early insulation system evaluation and small batch testing.
Claims
1. An armature electrical performance test tool in an oil environment, characterized in that: It includes an armature container and a heating box. A funnel is provided above the armature container, a temperature sensor is provided in the funnel, an oil inlet is provided on the funnel, an oil outlet is provided at the bottom of the funnel, the oil outlet is connected to an oil guide ring, and an oil tank is provided in the heating box. The oil tank is connected to the oil inlet of the funnel through an oil outlet pipe and a circulation pump.
2. The armature electrical performance testing tool in an oil environment according to claim 1, characterized in that: A temperature probe is provided in the oil tank.
3. The armature electrical performance testing tool in an oil environment according to claim 1, characterized in that: A heat-resistant fixing bracket is provided in the armature container.
4. The armature electrical performance testing tool in an oil environment according to claim 1, characterized in that: The heating box is provided with an electric heating coil, which is wound around the oil tank.
5. The armature electrical performance testing tool in an oil environment according to claim 1, characterized in that: The heating box is provided with a water tank, the water tank is provided with a spiral water pipe, the spiral water pipe is wound around the oil tank, and the spiral water pipe is connected to the water cooler through the water cooler water pipe and the water cooler stop valve.
6. The armature electrical performance testing tool in an oil environment according to claim 1, characterized in that: The two sides of the funnel are connected to the armature container through a height adjustment bracket. A vertical first waist-shaped hole is provided on the upper part of the height adjustment bracket. The funnel is connected to the first waist-shaped hole through bolts. Horizontal second waist-shaped holes are provided on both sides of the armature container. The lower end of the height adjustment bracket is connected to the second waist-shaped hole through bolts.
7. The armature electrical performance testing tool in an oil environment according to claim 1, characterized in that: The lower side of the funnel is fixed with an oil guide ring via a mounting clip.
8. The armature electrical performance testing tool in an oil environment according to claim 1, characterized in that: A flow valve is provided between the oil guide ring and the funnel.
9. The armature electrical performance testing tool in an oil environment according to claim 1, characterized in that: The circulation pump is a peristaltic pump.
10. The armature electrical performance testing tool in an oil environment according to claim 1, characterized in that: A heat-insulating layer is provided in the heating box.