CN114354155A - Three-way lubricating oil parameter independent verification tool for oil injection motor - Google Patents
Three-way lubricating oil parameter independent verification tool for oil injection motor Download PDFInfo
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- CN114354155A CN114354155A CN202111522884.3A CN202111522884A CN114354155A CN 114354155 A CN114354155 A CN 114354155A CN 202111522884 A CN202111522884 A CN 202111522884A CN 114354155 A CN114354155 A CN 114354155A
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- 239000003921 oil Substances 0.000 title claims abstract description 162
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 46
- 238000012795 verification Methods 0.000 title claims abstract description 23
- 238000002347 injection Methods 0.000 title claims abstract description 16
- 239000007924 injection Substances 0.000 title claims abstract description 16
- 230000007704 transition Effects 0.000 claims abstract description 45
- 210000001503 joint Anatomy 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 33
- 230000005540 biological transmission Effects 0.000 claims description 20
- 230000001050 lubricating effect Effects 0.000 claims description 14
- 238000012360 testing method Methods 0.000 abstract description 20
- 238000009434 installation Methods 0.000 abstract description 10
- 238000002955 isolation Methods 0.000 abstract description 3
- 238000002474 experimental method Methods 0.000 abstract 2
- 238000001816 cooling Methods 0.000 description 14
- 238000013461 design Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The application belongs to the technical field of motor experiments, and particularly relates to an oil injection motor three-way lubricating oil parameter independent verification tool. This experiment frock includes mounting disc flange (1), transition disc flange (2), first axle sleeve (3) and second axle sleeve (4), terminal surface butt joint before mounting disc flange (1) and the engine, and form first seal chamber (11) in butt joint department, another terminal surface of mounting disc flange (1) and the butt joint of a terminal surface of transition disc flange (2), form second seal chamber (12) between the two, another terminal surface of transition disc flange (2) with drag platform installation terminal surface (5) butt joint, mounting disc flange (1) and transition disc flange (2) are passed in first axle sleeve (3), and rotate with mounting disc flange (1) and transition disc flange (2) and be connected, first axle sleeve (3) are connected through second axle sleeve (4) and are dragged a output shaft. The cavity isolation of the test tool is realized, and therefore the independent verification of three paths of oil return parameters of the generator is realized.
Description
Technical Field
The application belongs to the technical field of motor tests, and particularly relates to an oil injection motor three-way lubricating oil parameter independent verification tool.
Background
When the generator works, cooling lubricating oil enters through the oil inlet of the generator shown in the figure 1, the transmission end and the non-transmission end of the generator are cooled through the oil circuit inside the motor and then respectively fall back to the two oil collecting grooves below the motor, the cooling lubricating oil inside the two oil collecting grooves is respectively pumped to a cooling device through the oil outlet (transmission end) of the generator and the oil outlet (non-transmission end) of the generator shown in the figure 1 through an external oil return pump, and the oil return temperatures of the two cooling lubricating oil paths need to be independently measured and verified. In addition, a part of cooling lubricating oil flows in through the rear end of the hollow transmission shaft of the generator and is sprayed out through an oil nozzle on a spline at the front end of the transmission shaft, and the part of lubricating oil on the airplane is used for lubricating a spline of a driving shaft of a casing of an airplane accessory, so that whether the flow of the part of lubricating oil meets the onboard requirement or not needs to be detected in the process that the generator is installed on a dragging system to carry out a test.
Disclosure of Invention
In order to solve the technical problem, the application provides an independent verification tool for three paths of lubricating oil parameters of an oil injection motor, which comprises a mounting disc flange, a transition disc flange, a first shaft sleeve and a second shaft sleeve, wherein one end face of the mounting disc flange is an engine mounting end face and is used for being butted with the front end face of an engine, a first sealing cavity is formed at the butt joint position, the other end face of the mounting disc flange is butted with one end face of the transition disc flange, a second sealing cavity is formed between the mounting disc flange and the transition disc flange, the other end face of the transition disc flange is butted with the mounting end face of a dragging platform and is used for being connected with the dragging platform, the first shaft sleeve penetrates through the mounting disc flange and the transition disc flange and is rotatably connected with the mounting disc flange and the transition disc flange, a shaft hole is formed in the first end, which is close to the engine mounting end face, and is connected with a spline oil outlet of the engine, and is connected with the second sealing cavity through a lateral through hole, a third seal cavity is arranged in the transition flange plate, the first shaft sleeve penetrates through the third seal cavity, and the tail end of the first shaft sleeve is connected with the output shaft of the dragging table through a second shaft sleeve;
the mounting disc flange is provided with a first oil inlet and a second oil inlet, the first oil inlet is communicated with an oil inlet of the generator, the second oil inlet is communicated with the first seal cavity, lubricating oil in the first seal cavity is used for lubricating a bearing between the mounting disc flange and the first shaft sleeve, the mounting disc flange is further provided with a first oil outlet, a second oil outlet and a fourth oil outlet, the first oil outlet is communicated with an oil outlet at a transmission end of the generator, the second oil outlet is communicated with an oil outlet at a non-transmission end of the generator, and the fourth oil outlet is communicated with the second seal cavity;
and a third oil inlet and a third oil outlet are formed in the transition disc flange, the third oil inlet and the third oil outlet are communicated with a third seal cavity, and lubricating oil in the third seal cavity is used for lubricating a bearing between the first shaft sleeve and the transition disc flange.
Preferably, the engine mounting end face of the mounting flange plate is fastened and connected with the engine front end face through screws.
Preferably, a gasket is arranged between the engine mounting end face of the mounting flange and the engine front end face.
Preferably, the mounting flange plate is of an annular plate body structure, the inner wall of the plate body structure is connected with the first shaft sleeve through a bearing, one side of the bearing is provided with the first sealing cavity, the other side of the bearing is provided with the dynamic sealing structure, the second oil inlet penetrates through the plate body structure of the mounting flange and is communicated to the bearing, and lubricating oil in the first sealing cavity is used for lubricating the bearing and the dynamic sealing structure.
Preferably, the transition disc flange is provided with an annular disc body structure, the inner wall of the disc body structure is connected with the first shaft sleeve through a bearing, the two sides of the bearing are respectively provided with a dynamic sealing structure, and lubricating oil in the third sealing cavity is used for lubricating the bearing and the dynamic sealing structure.
Preferably, the mounting plate flange and the transition plate flange are connected through screws and fastened through a clamping hoop.
Preferably, a sleeve is arranged between the bearing between the mounting disc flange and the first shaft sleeve and the dynamic sealing structure, a sleeve is arranged between the bearing between the transition disc flange and the first shaft sleeve and the dynamic sealing structure, and the sleeve is connected with the first shaft sleeve through a radially arranged cylindrical pin.
Preferably, the fourth oil outlet is connected to the first sealed cavity through a spline oil return pipeline, and a turbine flowmeter is arranged between the fourth oil outlet and the spline oil return pipeline.
The cavity isolation of the test tool is realized, and therefore the independent verification of three paths of oil return parameters of the generator is realized. Through the test tool for three-way oil inlet and four-way oil return, the condition that the spline oil return of the transmission shaft of the generator and the cavity of the generator have the same pressure can be ensured, the accurate verification of three-way lubricating oil parameters of the oil-injected generator is realized, and the test tool can be applied to the test verification of oil-injected cooling alternating current and direct current motors with three independent oil returns.
Drawings
Fig. 1 is a schematic front end view of an oil-injected generator.
FIG. 2 is a front view of the three-way oil-injection motor oil-lubricating-parameter independent verification tool.
FIG. 3 is a schematic view of section A-A of the embodiment of FIG. 2 of the present application.
The device comprises a mounting disc flange 1, a transition disc flange 2, a first shaft sleeve 3, a second shaft sleeve 4, a dragging table mounting end face 5, a sealing gasket 6, a clamp 7 and a spline oil return pipeline 8;
11-a first sealed cavity, 12-a second sealed cavity and 13-a third sealed cavity;
21-a first oil inlet, 22-a second oil inlet, 23-a third oil inlet, 24-a first oil outlet, 25-a second oil outlet, 26-a third oil outlet and 27-a fourth oil outlet;
31-axial hole, 32-lateral through hole.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all embodiments of the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application, and should not be construed as limiting the present application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application. Embodiments of the present application will be described in detail below with reference to the drawings.
The application provides an independent verification tool for three paths of lubricating oil parameters of an oil injection motor, as shown in figures 2 and 3, the independent verification tool comprises a mounting disc flange 1, a transition disc flange 2, a first shaft sleeve 3 and a second shaft sleeve 4, wherein one end face of the mounting disc flange 1 is an engine mounting end face and is used for being in butt joint with the front end face of an engine, a first sealing cavity 11 is formed at the butt joint position, the other end face of the mounting disc flange 1 is in butt joint with one end face of the transition disc flange 2, a second sealing cavity 12 is formed between the two end faces, the other end face of the transition disc flange 2 is in butt joint with a dragging table mounting end face 5 and is used for being connected with a dragging table, the first shaft sleeve 3 penetrates through the mounting disc flange 1 and the transition disc flange 2 and is rotatably connected with the mounting disc flange 1 and the transition disc flange 2, a shaft hole 31 is formed in the first end, close to the engine mounting end face, and is connected with a spline oil outlet of the engine, the shaft hole is connected with the second seal cavity 12 through a lateral through hole 32, a third seal cavity 13 is arranged in the transition flange 2, the first shaft sleeve 3 penetrates through the third seal cavity 13, and the tail end of the first shaft sleeve 3 is connected with an output shaft of the dragging table through a second shaft sleeve 4;
a first oil inlet 21 and a second oil inlet 22 are formed in the mounting disc flange 1, the first oil inlet 21 is communicated with an oil inlet of the generator, the second oil inlet 22 is communicated with the first seal cavity 11, lubricating oil in the first seal cavity 11 is used for lubricating a bearing between the mounting disc flange 1 and the first shaft sleeve 3, a first oil outlet 24, a second oil outlet 25 and a fourth oil outlet 27 are further formed in the mounting disc flange 1, the first oil outlet 24 is communicated with an oil outlet at a transmission end of the generator, the second oil outlet 25 is communicated with an oil outlet at a non-transmission end of the generator, and the fourth oil outlet 27 is communicated with the second seal cavity 12;
the transition disc flange 2 is provided with a third oil inlet 23 and a third oil outlet 26, the third oil inlet 23 and the third oil outlet 26 are communicated with a third seal cavity 13, and lubricating oil in the third seal cavity 13 is used for lubricating a bearing between the first shaft sleeve 3 and the transition disc flange 2.
The utility model provides a test tool assembly is more, except that second shaft sleeve 4, need not to demolish after the cooperation is installed between each subassembly, forms a complete test tool, only needs to install second shaft sleeve 4 when the product is tested on dragging a platform output shaft, then will be tested the product through mounting screw and locating pin install fixed can, follow-up use is very convenient.
In some alternative embodiments, the engine mounting end face of the mounting flange plate 1 is fastened and connected with the engine front end face through screws. The connection of the mounting flange plate and the generator can change the connection interface according to the installation mode and the size of the generator, and the application is not limited to the generator test by screw fastening in fig. 2.
In some alternative embodiments, a gasket 6 is disposed between the engine mounting end face and the engine front end face of the mounting flange 1.
In some optional embodiments, the mounting flange 1 has an annular disk structure, the inner wall of the disk structure is connected to the first shaft sleeve 3 through a bearing, one side of the bearing is the first seal cavity, the other side of the bearing is provided with a dynamic seal structure, the second oil inlet 22 passes through the disk structure of the mounting flange 1 and is communicated to the bearing, and the lubricating oil in the first seal cavity 11 is used for lubricating the bearing and the dynamic seal structure.
In this application, the generator is supplied with the lubricating oil to external cooling device through first oil inlet 21, cools off through the inside circulation oil circuit of generator to generator inside, finally takes out the lubricating oil to cooling device respectively through first oil-out 24 and second oil-out 25 by two oil return pumps, and two way oil returns have independent oil return pipeline to respectively be furnished with a temperature sensor, thereby realize the independent measurement of two way oil return temperatures of generator transmission end and non-transmission end.
In the normal working process of the generator, the dynamic seal and the bearing in the test tool need lubricating oil, so that the tool is provided with a second oil inlet 22, the lubricating oil is supplied to the second oil inlet 22 through a cooling device, the bearing and the dynamic seal are lubricated, and the lubricating oil after lubrication flows into an open cavity on the front end surface of the generator and is pumped to an external cooling device through an oil return opening.
In some optional embodiments, the transition disc flange 2 has an annular disc structure, an inner wall of the disc structure is connected to the first shaft sleeve 3 through a bearing, dynamic seal structures are respectively arranged on two sides of the bearing, and lubricating oil in the third seal cavity 13 is used for lubricating the bearing and the dynamic seal structures.
In this embodiment, the main function of the third sealed cavity 13 is to lubricate one bearing and two dynamic seals, the external cooling device supplies the lubricating oil to the bearing and two dynamic seals on the left side in fig. 2 through the third oil inlet 23, the third oil outlet 26 is connected with the three-way oil nozzle on the second oil outlet 25, and the lubricating oil after lubrication is pumped back to the cooling device through the oil return pump.
In some alternative embodiments, the mounting disk flange 1 and the transition disk flange 2 are connected by a cylindrical pin and fastened by a clamp 7.
In some alternative embodiments, a sleeve is arranged between the bearing and the dynamic seal structure between the mounting disk flange 1 and the first shaft sleeve 3, a sleeve is arranged between the bearing and the dynamic seal structure between the transition disk flange 2 and the first shaft sleeve 3, and the sleeve is connected with the first shaft sleeve 3 through a radially arranged cylindrical pin.
In some alternative embodiments, the fourth oil outlet 27 is connected to the first sealed cavity 11 through a spline oil return line 8, and a turbine flowmeter is arranged between the fourth oil outlet 27 and the spline oil return line 8.
In this embodiment, the second seal cavity 12 mainly functions to measure the flow rate of the lubricating oil of an oil nozzle (e.g. the spline oil outlet in fig. 1) on the spline at the front end of the generator transmission shaft, during the rotation of the generator transmission shaft, the lubricating oil sprayed from the spline oil nozzle enters the area of the second seal cavity 12 through the first sleeve 3, and is thrown out of the sleeve through four evenly distributed oil outlets on the sleeve (i.e. four lateral through holes 32 are arranged, in an alternative embodiment, eight, sixteen, etc. are also provided), and flows into the second seal cavity 12, and connects the fourth oil outlet 27 with the spline oil return pipeline 8 in fig. 3, thereby ensuring that the pressure of the second seal cavity 12 and the internal cavity of the generator is the same as the on-machine state, and a small turbine flowmeter is provided on the oil path between the fourth oil outlet 27 and the spline oil return pipeline 8 for measuring the flow rate of the lubricating oil at the spline oil outlet, and the spline return oil is finally pumped to the cooling device through the return pump.
The application has the advantages that: 1. by adopting the tool design of three-way oil inlet and four-way oil return, the test tool is isolated into three independent cavities, the verification of the lubricating oil parameters in each cavity can be realized respectively, and the lubrication of two bearings and three dynamic seals is also ensured. 2. The fourth oil outlet 27 is connected with the spline oil return, so that the on-machine state is completely simulated, and the pressure of the second seal cavity 12 and the internal cavity of the generator is ensured to be the same. 3. The structure of one mounting flange and one transition flange can ensure that two deep groove ball bearings and three dynamic seal assemblies are convenient to mount. 4. The adjustable dynamic sealing ring is arranged, so that the sealing and isolating effects can be achieved, and the additional moment can be reduced to the minimum value through adjustment. 5. The design of cylindric lock on the transition ring flange can play the rotatory effect of braking when transition ring flange and installation ring flange, drag platform installation face cooperation installation, convenient cooperation installation. 6. Four cylindrical pin holes on the first shaft sleeve 3 are matched and pressed with the cylindrical pins and the dynamic sealing dynamic ring, so that the position of the dynamic sealing ring on the shaft sleeve is fixed, and the dynamic ring is linked with the shaft sleeve.
The tool provided by the application is qualified in test results through a hydraulic test and a continuous rated load test of an acceptance test of the alternating-current generator. In the testing process, the assembled test tool is fixedly connected with a dragging table through a hoop, a sealing gasket is arranged between a generator and an installation flange plate interface, the generator is reliably fixed on the dragging table interface through 13 screws, and the tightening torque of an installation nut is (10-11) N.m.
The test requirements are as follows: the working speed of the generator is (12000 +/-30) rpm, the oil inlet pressure is (448.16-517.1) kPa, the oil inlet temperature is (116-121) DEG C, the temperature difference between the oil temperature of the outlet of the driving end of the generator and the oil temperature of the inlet of the generator after the generator is in idle running for 5min and is thermally stable is not more than 6.5 ℃, the temperature difference between the oil temperature of the outlet of the non-driving end and the oil temperature of the inlet of the generator is not more than 4.5 ℃, and the flow rate of lubricating oil at the spline oil outlet of the transmission shaft is (0.2 +/-0.05) L/min. The power factor of the generator is 0.75, the rated load of the phase current (116 +/-5) A works for 15min, the temperature difference between the oil temperature of the outlet of the driving end and the oil temperature of the inlet is less than or equal to 26.5 ℃, and the temperature difference between the oil temperature of the outlet of the non-driving end and the oil temperature of the inlet is less than or equal to 23.5 ℃.
And (3) actually measuring results: the oil inlet pressure is set to be 500kPa, the oil inlet temperature is 118 ℃, after the idle load operation is carried out for 5min, the temperature difference between the oil temperature of the outlet (the first oil outlet 24) at the drive end of the generator and the oil temperature of the inlet is 4.5 ℃, the temperature difference between the oil temperature of the outlet (the second oil outlet 25) at the non-drive end and the oil temperature of the inlet is 3.5 ℃, and the lubricating oil flow of the spline oil outlet of the transmission shaft is 0.22L/min; after the rated load works for 15min, the temperature difference between the oil temperature of the outlet of the driving end and the oil temperature of the inlet is 20.5 ℃, the temperature difference between the oil temperature of the outlet of the non-driving end and the oil temperature of the inlet is 18.2 ℃, and the requirement of the working characteristic of the generator is met.
The application provides a tool design scheme for independently verifying three paths of oil return parameters of an oil injection motor. Through designing mechanical structures such as an installation flange plate, a transition flange plate, a shaft sleeve, a bearing, a dynamic seal, a clamp, a cylindrical pin and the like and assembling modes among the mechanical structures, the cavity isolation of the test tool is realized, and the independent verification of three-way oil return parameters of the generator is realized.
The utility model provides an assembly back structure symmetry such as axle sleeve, cylindric lock, dynamic seal, spacing each other, installation are firm, the assembly is exquisite. The shaft sleeve is not only a transmission shaft, but also an oil outlet of cooling lubricating oil. The oil outlet pipeline of the second seal cavity is connected with the spline oil return, so that the same pressure of the second seal cavity and the inner cavity of the generator is ensured, the state of the second seal cavity and the state of the generator installed on the airplane are consistent, and the verification reliability and accuracy are ensured.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. The three-way lubricating oil parameter independent verification tool for the oil injection motor is characterized by comprising a mounting disc flange (1), a transition disc flange (2), a first shaft sleeve (3) and a second shaft sleeve (4), wherein one end face of the mounting disc flange (1) is an engine mounting end face and is used for being in butt joint with the front end face of an engine, a first sealing cavity (11) is formed at the butt joint position, the other end face of the mounting disc flange (1) is in butt joint with one end face of the transition disc flange (2), a second sealing cavity (12) is formed between the mounting disc flange and the transition disc flange, the other end face of the transition disc flange (2) is in butt joint with a dragging table mounting end face (5) and is used for being connected with a dragging table, the first shaft sleeve (3) penetrates through the mounting disc flange (1) and the transition disc flange (2) and is rotatably connected with the mounting disc flange (1) and the transition disc flange (2), a shaft hole (31) is formed in the first end, close to the engine mounting end face, of the first shaft sleeve (3), the shaft hole is connected with a spline oil outlet of an engine, the shaft hole is connected with the second sealing cavity (12) through a lateral through hole (32), a third sealing cavity (13) is arranged in the transition flange (2), the first shaft sleeve (3) penetrates through the third sealing cavity (13), and the tail end of the first shaft sleeve (3) is connected with an output shaft of the dragging table through a second shaft sleeve (4);
a first oil inlet (21) and a second oil inlet (22) are formed in the mounting disc flange (1), the first oil inlet (21) is communicated with an oil inlet of the generator, the second oil inlet (22) is communicated with the first seal cavity (11), lubricating oil in the first seal cavity (11) is used for lubricating a bearing between the mounting disc flange (1) and the first shaft sleeve (3), a first oil outlet (24), a second oil outlet (25) and a fourth oil outlet (27) are further formed in the mounting disc flange (1), the first oil outlet (24) is communicated with a transmission end oil outlet of the generator, the second oil outlet (25) is communicated with a non-transmission end oil outlet of the generator, and the fourth oil outlet (27) is communicated with the second seal cavity (12);
the transition disc flange (2) is provided with a third oil inlet (23) and a third oil outlet (26), the third oil inlet (23) and the third oil outlet (26) are communicated with a third seal cavity (13), and lubricating oil in the third seal cavity (13) is used for lubricating a bearing between the first shaft sleeve (3) and the transition disc flange (2).
2. The oil-injection motor three-way lubricating oil parameter independent verification tool in claim 1 is characterized in that an engine mounting end face of the mounting flange plate (1) is fixedly connected with the front end face of an engine through screws.
3. The oil-injection motor three-way lubricating oil parameter independent verification tool in claim 2 is characterized in that a sealing gasket (6) is arranged between the engine mounting end face of the mounting flange plate (1) and the front end face of the engine.
4. The oil-injection motor three-way lubricating oil parameter independent verification tool is characterized in that the mounting flange plate (1) is of an annular plate body structure, the inner wall of the plate body structure is connected with the first shaft sleeve (3) through a bearing, one side of the bearing is provided with the first sealing cavity, the other side of the bearing is provided with a dynamic sealing structure, the second oil inlet (22) penetrates through the plate body structure of the mounting plate flange (1) and is communicated to the bearing, and lubricating oil in the first sealing cavity (11) is used for lubricating the bearing and the dynamic sealing structure.
5. The oil-injection motor three-way lubricating oil parameter independent verification tool in claim 1 is characterized in that the transition disc flange (2) is of an annular disc body structure, the inner wall of the disc body structure is connected with the first shaft sleeve (3) through a bearing, dynamic sealing structures are arranged on two sides of the bearing respectively, and lubricating oil in the third sealing cavity (13) is used for lubricating the bearing and the dynamic sealing structures.
6. The oil injection motor three-way lubricating oil parameter independent verification tool in claim 1 is characterized in that the mounting disc flange (1) and the transition disc flange (2) are connected through a cylindrical pin and fastened through a clamp (7).
7. The oil-injection motor three-way lubricating oil parameter independent verification tool in claim 1 is characterized in that a sleeve is arranged between a bearing and a dynamic seal structure between the mounting plate flange (1) and the first shaft sleeve (3), a sleeve is arranged between a bearing and a dynamic seal structure between the transition plate flange (2) and the first shaft sleeve (3), and the sleeve is connected with the first shaft sleeve (3) through radially-arranged cylindrical pins.
8. The three-way oil-injection motor lubricating parameter independent verification tool according to claim 1, wherein the fourth oil outlet (27) is connected to the first seal cavity (11) through a spline oil return pipeline (8), and a turbine flowmeter is arranged between the fourth oil outlet (27) and the spline oil return pipeline (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111522884.3A CN114354155B (en) | 2021-12-13 | 2021-12-13 | Independent verification tool for three-way lubricating oil parameters of oil injection motor |
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| CN202111522884.3A CN114354155B (en) | 2021-12-13 | 2021-12-13 | Independent verification tool for three-way lubricating oil parameters of oil injection motor |
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| CN114354155B CN114354155B (en) | 2024-03-19 |
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