CN115144093A - Testing arrangement of high-speed permanent magnetism feed liquor motor bearing temperature rise - Google Patents
Testing arrangement of high-speed permanent magnetism feed liquor motor bearing temperature rise Download PDFInfo
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- CN115144093A CN115144093A CN202210717832.XA CN202210717832A CN115144093A CN 115144093 A CN115144093 A CN 115144093A CN 202210717832 A CN202210717832 A CN 202210717832A CN 115144093 A CN115144093 A CN 115144093A
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- bearing
- liquid inlet
- speed permanent
- permanent magnet
- temperature rise
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- 238000012360 testing method Methods 0.000 title claims abstract description 31
- 230000005389 magnetism Effects 0.000 title claims description 6
- 239000007788 liquid Substances 0.000 claims abstract description 101
- 238000009434 installation Methods 0.000 claims description 7
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
Abstract
The invention provides a device for testing bearing temperature rise of a high-speed permanent magnet liquid inlet motor, which comprises a high-speed permanent magnet liquid inlet motor; a bearing cover of the high-speed permanent magnet liquid inlet motor is provided with a detected bearing, and a bearing box of the high-speed permanent magnet liquid inlet motor is provided with a liquid inlet liquid outlet and a blind hole for embedding a thermal resistance temperature sensor; and a gap exists between the blind hole and a measured bearing arranged in the bearing housing. Under the condition of not damaging the motor structure, the temperature rise data of the high-speed permanent magnet liquid inlet motor bearing during working in various aerospace power systems can be acquired, and powerful guarantee is provided for stable operation of the power systems; under different liquid inlet media and different working conditions, the temperature rise data of the bearing can be accurately measured in real time, and the data obtained by testing provides a real and reliable reference basis for application and model selection of the bearing.
Description
Technical Field
The invention relates to a device for testing temperature rise of a bearing of a high-speed permanent magnet liquid inlet motor, belongs to the technical field of electrical engineering, and is applied to a high-speed permanent magnet motor.
Background
With the rapid development of the aerospace field in China, a high-speed permanent magnet liquid inlet motor plays an increasingly important role in an aerospace power system, a bearing is taken as a key high-precision component standard part in the high-speed permanent magnet liquid inlet motor, is usually arranged in the motor and is arranged on two sides of a rotor, and because of the performance output characteristics of high power density and high rotating speed, under the working condition without a cooling mode, the temperature of the bearing of the high-speed motor rises rapidly in a short time.
Disclosure of Invention
In order to solve the technical problem, the invention provides a device for testing the temperature rise of a high-speed permanent magnet liquid inlet motor bearing, which can accurately measure the temperature rise of the high-speed permanent magnet liquid inlet motor bearing by simulating the real working condition of the motor bearing under the condition of not damaging the structure of the high-speed permanent magnet liquid inlet motor.
The invention is realized by the following technical scheme.
The invention provides a device for testing the bearing temperature rise of a high-speed permanent magnet liquid inlet motor, comprises a high-speed permanent magnet liquid inlet motor; a bearing box of the high-speed permanent magnet liquid inlet motor is provided with a detected bearing, and a liquid inlet liquid outlet and a blind hole for embedding a thermal resistance temperature sensor are arranged on the bearing box of the high-speed permanent magnet liquid inlet motor; a gap exists between the blind hole and a measured bearing arranged in the bearing box; under normal operating conditions, feed liquor liquid enters the bearing housing through the feed liquor inlet, extend the tip at high-speed permanent magnetism feed liquor motor pivot and divide into two routes and flow, a branch road liquid flows through high-speed permanent magnetism feed liquor motor pivot centre bore, the air gap between stator and the rotor, flow to the feed liquor liquid exit of bearing box at last, another branch road liquid directly flows through the feed liquor liquid exit of being surveyed the bearing to the bearing box, two branch road liquid gathers the back and flows out by the feed liquor liquid exit of bearing box, then measure thermal resistance temperature sensor's resistance value through the universal meter, obtain corresponding temperature through the relation that resistance changes along with the temperature.
The distance between the blind hole and the outer circle surface of the measured bearing outer ring is 1-2 mm.
The extension end of the rotor shaft is extended, the mounting position of the bearing block is reserved on the extension end of the shaft, and the measured bearing is assembled between the bearing block and the bearing box in an external mounting mode.
The bearing temperature rise test of different sizes and specifications is realized by changing the outer diameter of the bearing retainer and the inner diameter of a hole for mounting the bearing on the bearing box.
And the bearing temperature rise test of the same tested bearing under different liquid inlet media is realized by changing the type of liquid inlet liquid.
The bearing temperature rise test of the high-speed permanent magnet liquid inlet motor bearing under different liquid inlet working conditions is realized by adjusting the flow parameter of the liquid inlet.
The invention has the beneficial effects that: under the condition of not damaging the motor structure, the temperature rise data of the high-speed permanent magnet liquid inlet motor bearing during working in various aerospace power systems can be acquired, and powerful guarantee is provided for stable operation of the power systems; under different liquid inlet media and different working conditions, the temperature rise data of the bearing can be accurately measured in real time, and the data obtained by testing provides a real and reliable reference basis for application and type selection of the bearing.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: the method comprises the following steps of 1-high-speed permanent magnet liquid inlet motor, 2-bearing box, 3-liquid inlet liquid outlet, 4-Pt1000 thermal resistance temperature sensor, 5-universal meter, 6-detected bearing, 7-bearing cover and 8-liquid inlet liquid.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
Example 1
The device for testing the bearing temperature rise of the high-speed permanent magnet liquid inlet motor shown in the figure 1 comprises a high-speed permanent magnet liquid inlet motor 1; a bearing box 2 of the high-speed permanent magnet liquid inlet motor 1 is provided with a tested bearing 6, and the bearing box 2 of the high-speed permanent magnet liquid inlet motor 1 is provided with a liquid inlet liquid outlet 3 and a blind hole for embedding a thermal resistance temperature sensor 4; a gap exists between the blind hole and a measured bearing 6 arranged in the bearing box 2; under normal operating conditions, feed liquor enters the bearing housing 7 through the feed liquor inlet 8, the end part of the high-speed permanent magnet feed liquor motor 1 rotating shaft extension is divided into two paths to flow, a branch liquor flows through the center hole of the high-speed permanent magnet feed liquor motor 1 rotating shaft, the air gap between the stator and the rotor, finally flows to the feed liquor outlet 3 of the bearing box 2, the other branch liquor directly flows through the feed liquor outlet 3 of the tested bearing 6 to the bearing box 2, the two branch liquors are gathered and then flows out from the feed liquor outlet 3 of the bearing box 2, then the resistance value of the thermal resistance temperature sensor 4 is measured through the universal meter 5, and the corresponding temperature is obtained through the relation of the resistance along with the temperature change.
The distance between the blind hole and the outer circular surface of the outer ring of the measured bearing 6 is 1-2 mm.
The extension end of the rotor shaft is extended, the installation position of the bearing block is reserved on the extension end of the shaft, and the measured bearing 6 is assembled between the bearing block and the bearing box 2 in an external installation mode.
The bearing temperature rise test of different sizes and specifications is realized by changing the outer diameter of the bearing retainer and the inner diameter of the hole for installing the bearing on the bearing box 2.
The bearing temperature rise test of the same tested bearing 6 under different liquid inlet media is realized by changing the type of liquid inlet liquid.
The bearing temperature rise test of the high-speed permanent magnet liquid inlet motor 1 bearing under different liquid inlet working conditions is realized by adjusting the flow parameter of the liquid inlet 8.
Example 2
The protocol of example 1 was followed and:
a liquid inlet is arranged on the bearing cover 7, a liquid inlet outlet 3 and a blind hole for embedding the Pt1000 thermal resistance temperature sensor 4 are arranged on the bearing box 2, in order to accurately measure the temperature rise of the measured bearing 6 and avoid liquid leakage and outflow, the bottom of the blind hole is usually 1 mm-2 mm away from the outer circumferential surface of the outer ring of the measured bearing 6, the liquid inlet enters the bearing cover 7 through the liquid inlet 8 under the normal working condition of the high-speed permanent magnet liquid inlet motor 1, two paths flow at the extension end part of the rotating shaft of the high-speed permanent magnet liquid inlet motor 1, one path of liquid flows through the central hole of the rotating shaft of the high-speed permanent magnet liquid inlet motor 1, the motor stator and the rotor air gap and finally flows to the liquid inlet 3 of the bearing box 2, the other path of liquid directly flows to the liquid inlet 3 of the bearing box 2 through the measured bearing 6, the two paths of liquid flow out from the liquid inlet 3 of the bearing box 2 after gathering, the liquid flow direction is shown in the arrow direction in figure 1, after the high-speed permanent magnet liquid inlet motor 1 enters the stable working state, the multimeter 5 is used for measuring the resistance value between the Pt1000 thermal resistance temperature sensor 4 according to the two-line temperature change, and the corresponding numerical value of the corresponding to the temperature change.
Example 3
The protocol of example 1 was followed and:
stretch the end extension with the rotor shaft, the axle is stretched and is served and reserve out bearing fender mounted position, the inside bearing 6 of being surveyed of motor keeps off and bearing box 2 between at the bearing through external mounting means assembly, bearing housing 7 is used for being surveyed 6 axial of bearing spacing and sealed, be equipped with feed liquor liquid entry 8 on the bearing housing 7, be equipped with feed liquor liquid export 3 on the bearing box 2, through the internal diameter in the hole of changing the external diameter that the bearing kept off and the bearing box 2 on the installation bearing, can realize the bearing temperature rise test of not equidimension specification.
Example 4
The protocol of example 1 was followed and:
by changing the type of the liquid inlet liquid, the bearing temperature rise test of the same test bearing 6 under different liquid inlet media can be realized.
Example 5
The protocol of example 1 was followed and:
by adjusting the flow parameters of the liquid inlet 8 on the bearing cover 7, such as the pressure and the flow parameters of the liquid inlet liquid, the bearing temperature rise test of the bearing of the high-speed permanent magnet liquid inlet motor 1 under different liquid inlet working conditions can be realized.
In conclusion, the extension end of the rotor shaft is extended, the bearing block installation position is reserved on the shaft extension end, a measured bearing inside the motor is assembled between the bearing block and the bearing box in an external installation mode, the bearing cover is used for axially limiting and sealing the measured bearing, a liquid inlet is formed in the bearing cover, a liquid inlet outlet is formed in the bearing box, and temperature rise tests of bearings with different sizes and specifications can be realized by changing the outer diameter of the bearing block and the inner diameter of a hole for installing the bearing on the bearing box; the bearing temperature rise test of the same bearing under different liquid inlet media can be realized by changing the type of liquid inlet liquid; the bearing temperature rise test of the high-speed permanent magnet liquid inlet motor bearing under different liquid inlet working conditions can be realized by adjusting the liquid flow at the inlet on the bearing cover.
Claims (6)
1. The utility model provides a testing arrangement of high-speed permanent magnetism feed liquor motor bearing temperature rise, includes high-speed permanent magnetism feed liquor motor (1), its characterized in that: a bearing box (2) of the high-speed permanent magnet liquid inlet motor (1) is provided with a detected bearing (6), and the bearing box (2) of the high-speed permanent magnet liquid inlet motor (1) is provided with a liquid inlet liquid outlet (3) and a blind hole for embedding a thermal resistance temperature sensor (4); a gap exists between the blind hole and a measured bearing (6) arranged in the bearing box (2);
under normal operating conditions, feed liquor enters a bearing cover (7) through a feed liquor inlet (8), the end part of a rotating shaft extension of a high-speed permanent magnet feed liquor motor (1) is divided into two paths to flow, branch liquor flows through a rotating shaft center hole of the high-speed permanent magnet feed liquor motor (1), an air gap between a stator and a rotor, and finally flows to a feed liquor outlet (3) of a bearing box (2), the other branch liquor directly flows through a tested bearing (6) to the feed liquor outlet (3) of the bearing box (2), the two branch liquors are gathered and then flow out from the feed liquor outlet (3) of the bearing box (2), then the resistance value of a thermal resistance temperature sensor (4) is measured through a universal meter (5), and the corresponding temperature is obtained through the relation that the resistance changes along with the temperature.
2. The device for testing the bearing temperature rise of the high-speed permanent magnet liquid inlet motor according to claim 1, is characterized in that: the distance between the blind hole and the outer circle surface of the outer ring of the measured bearing (6) is 1-2 mm.
3. The device for testing the bearing temperature rise of the high-speed permanent magnet liquid inlet motor according to claim 1, is characterized in that: the extension end of the rotor shaft is extended, the installation position of the bearing block is reserved on the extension end of the shaft, and the measured bearing (6) is assembled between the bearing block and the bearing box (2) in an external installation mode.
4. The device for testing the bearing temperature rise of the high-speed permanent magnet liquid inlet motor according to claim 1, is characterized in that: the bearing temperature rise test of different sizes and specifications is realized by changing the outer diameter of the bearing retainer and the inner diameter of a hole for installing the bearing on the bearing box (2).
5. The device for testing the bearing temperature rise of the high-speed permanent magnet liquid inlet motor according to claim 1, is characterized in that: the bearing temperature rise test of the same tested bearing (6) under different liquid inlet media is realized by changing the type of liquid inlet liquid.
6. The device for testing the temperature rise of the bearing of the high-speed permanent magnet liquid inlet motor according to claim 1, wherein: the bearing temperature rise test of the high-speed permanent magnet liquid inlet motor (1) bearing under different liquid inlet working conditions is realized by adjusting the flow parameter of the liquid inlet (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210717832.XA CN115144093A (en) | 2022-06-20 | 2022-06-20 | Testing arrangement of high-speed permanent magnetism feed liquor motor bearing temperature rise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210717832.XA CN115144093A (en) | 2022-06-20 | 2022-06-20 | Testing arrangement of high-speed permanent magnetism feed liquor motor bearing temperature rise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115144093A true CN115144093A (en) | 2022-10-04 |
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ID=83408773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210717832.XA Pending CN115144093A (en) | 2022-06-20 | 2022-06-20 | Testing arrangement of high-speed permanent magnetism feed liquor motor bearing temperature rise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115144093A (en) |
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2022
- 2022-06-20 CN CN202210717832.XA patent/CN115144093A/en active Pending
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