CN220667848U - Centrifugal booster pump testboard - Google Patents
Centrifugal booster pump testboard Download PDFInfo
- Publication number
- CN220667848U CN220667848U CN202322351607.1U CN202322351607U CN220667848U CN 220667848 U CN220667848 U CN 220667848U CN 202322351607 U CN202322351607 U CN 202322351607U CN 220667848 U CN220667848 U CN 220667848U
- Authority
- CN
- China
- Prior art keywords
- oil
- booster pump
- tank
- oil tank
- centrifugal booster
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 claims abstract description 52
- 239000007788 liquid Substances 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000011056 performance test Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 195
- 239000000446 fuel Substances 0.000 description 9
- 239000002828 fuel tank Substances 0.000 description 9
- 230000001276 controlling effect Effects 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000011076 safety test Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The application relates to the technical field of aircraft component manufacturing and provides a centrifugal booster pump test board, which comprises an oil tank, an oil inlet component and an oil outlet component, wherein the oil inlet component is connected with the oil tank, and is connected with an inlet of a centrifugal booster pump; the oil outlet component is connected with an outlet of the centrifugal booster pump, and the oil outlet component is connected with the oil tank. The application has the effect of conveniently carrying out performance test on the centrifugal booster pump.
Description
Technical Field
The application relates to the technical field of aircraft component manufacturing, in particular to a centrifugal booster pump test board.
Background
The centrifugal booster pump is a booster pump of the front stage of the fuel regulator of the aircraft stress application system, and has the main functions of pre-boosting the fuel of the aircraft fuel tank, providing the inlet fuel with a certain pressure range for the pump regulator, and ensuring good filling property and working reliability of the inlet fuel of the pump regulator.
The centrifugal booster pump is a key component of an aircraft stress application system, so that the centrifugal booster pump needs to be tested and has verification performance when the centrifugal booster pump is detected after being designed and maintained.
Disclosure of Invention
In order to facilitate performance testing of a centrifugal booster pump, the application provides a centrifugal booster pump test stand.
The application provides a centrifugal booster pump testboard adopts following technical scheme:
the centrifugal booster pump test board comprises an oil tank, an oil inlet assembly and an oil outlet assembly, wherein the oil inlet assembly is connected with the oil tank and is connected with an inlet of a centrifugal booster pump; the oil outlet component is connected with an outlet of the centrifugal booster pump, and the oil outlet component is connected with the oil tank.
By adopting the technical scheme, the oil tank is used for storing aviation kerosene or equivalent test liquid, oil in the oil tank enters the oil inlet component, and the oil inlet component is connected with the inlet of the centrifugal booster pump to supply oil for the test; the oil outlet assembly is connected with an outlet of the centrifugal booster pump, and the tested oil flows back into the oil tank along the oil outlet assembly, so that the recycling is realized.
The test steps are as follows: the inlet fuel pressure of the centrifugal booster pump is regulated to 0.022-0.027 MPa (3.19-3.9 psi), the lubricating oil is poured into a lubricating oil port of the centrifugal booster pump, a blanking cover is installed, the driving rotating speed is slowly increased to 8828+/-15 r/min, and the outlet pressure is regulated to 0.287-0.297 MPa (41.7-43.0 psi). And finally, the oil in the oil tank enters an inlet of the centrifugal booster pump and finally comes out from an outlet of the centrifugal booster pump, and whether the flow value (the flow is more than or equal to 800L/h) at the outlet meets the technical requirements is checked.
Preferably, the oil inlet assembly comprises an oil inlet pipeline, a first ball valve and a first pressure sensor, wherein the input end of the oil inlet pipeline is connected with the oil tank, and the output end of the oil inlet pipeline is used for being connected with an inlet of the centrifugal booster pump; the first ball valve and the first pressure sensor are sequentially arranged along the flow direction of the oil inlet pipeline, and the first pressure sensor is close to the output end of the oil inlet pipeline.
By adopting the technical scheme, the oil in the oil tank is conveyed to the centrifugal booster pump along the oil inlet pipeline, and the first ball valve is used for controlling the on-off and adjustment of the test oil, so that the test oil is ensured to normally flow in the oil inlet pipeline; and the first pressure sensor can detect the pressure of oil entering the inlet of the booster pump, so that the pressure can be conveniently regulated according to actual needs in the test process, and the accuracy of a test result is improved.
Preferably, the oil tank further comprises a first filter, wherein the first filter is arranged on the oil inlet pipeline, and the first filter is positioned between the oil tank and the first ball valve.
By adopting the technical scheme, the first filter can remove a small amount of solid particles in the test oil, so that the normal operation of the machine equipment can be protected, and the safety test is ensured. When the oil in the oil tank enters a first filter provided with a filter screen with a certain specification, impurities are blocked, and clean filtrate is discharged from an outlet of the first filter. After being filtered by the first filter, the oil in the oil tank enters an oil inlet pipeline and is then conveyed to a booster pump.
Preferably, the oil outlet assembly comprises an oil outlet pipeline, a second pressure sensor, a flowmeter and a second ball valve, wherein the input end of the oil outlet pipeline is used for being connected with the outlet of the centrifugal booster pump, and the output end of the oil outlet pipeline is connected with the oil tank; the second pressure sensor, the flowmeter and the second ball valve are sequentially arranged along the flow direction of the oil outlet pipeline.
Through adopting above-mentioned technical scheme, the second pressure sensor can detect the pressure size of booster pump exit test oil to operating personnel carries out the adjustment of pressure according to actual conditions. The flowmeter can detect the flow value of the test oil at the outlet of the booster pump, and further judge whether the performance of the booster pump meets the requirements. The second ball valve is used as a switch for controlling the flow of the test oil in the oil outlet pipeline, and after the booster pump is tested, the test oil flows back into the oil tank along the oil outlet pipeline.
Preferably, the fuel tank further comprises a second filter, wherein the second filter is arranged on the fuel outlet pipeline, and the second filter is positioned between the fuel tank and the flowmeter.
Through adopting above-mentioned technical scheme, the second filter can remove the impurity to the oil through the test backward flow, improves the clean degree when oil backward flow flows the oil tank.
Preferably, the vacuum assembly comprises a vacuum pipeline, a vacuum pump and a third ball valve, one end of the vacuum pipeline is connected with the oil tank, the other end of the vacuum pipeline is connected with the vacuum pump, the vacuum pump is used for vacuumizing the oil tank, and the third ball valve is arranged between the oil tank and the vacuum pump.
Through adopting above-mentioned technical scheme, the vacuum pump is used for carrying out the evacuation to the oil tank, and the gas in the oil tank is taken away along vacuum pipe for the inside negative pressure that forms of oil tank. The negative pressure in the oil tank can enable oil to flow from the low-pressure area to the high-pressure area, so that the normal circulation of the oil is ensured. The third ball valve is used for controlling the switch of the fluid in the vacuum pipeline so as to adjust the vacuum pressure inside the oil tank.
Preferably, the hydraulic oil tank further comprises a positive pressure pipeline and a fourth ball valve, wherein the positive pressure pipeline is communicated with the oil tank, and the fourth ball valve is arranged on the positive pressure pipeline.
Through adopting above-mentioned technical scheme, through the switch of control fourth ball valve, outside air can be along in the malleation pipeline enters into the oil tank to increase the atmospheric pressure in the oil tank, change the state of negative pressure in the oil tank.
Preferably, the device further comprises a liquid level meter, wherein the liquid level meter is arranged outside the oil tank and is used for detecting the liquid level in the oil tank.
Through adopting above-mentioned technical scheme, the liquid level height of oil tank inside can be detected to the level gauge, when needs are to be in the oil tank oiling, makes things convenient for operating personnel in time to observe the liquid level of oil tank in the oil tank outside.
Preferably, the fuel tank further comprises a safety valve, and the safety valve is arranged on the fuel tank.
By adopting the technical scheme, the safety valve is a valve for protecting the safety of the system, and the inside of the oil tank can automatically release pressure after exceeding the set pressure, so that the overpressure is prevented from being used.
Preferably, the device further comprises a mobile vehicle, and the oil tank, the oil inlet assembly and the oil outlet assembly are all arranged on the mobile vehicle.
Through adopting above-mentioned technical scheme, with the integral erection such as oil tank on the mobile car, realize conveniently transporting.
In summary, the present application includes at least one of the following beneficial technical effects:
(1) By arranging the oil tank, the oil inlet assembly and the oil outlet assembly, oil in the oil tank enters the oil inlet assembly, and the oil inlet assembly is connected with an inlet of the centrifugal booster pump to supply oil for testing; the oil outlet assembly is connected with an outlet of the centrifugal booster pump, and the tested oil flows back into the oil tank along the oil outlet assembly.
(2) Through setting up vacuum assembly, the vacuum pump is used for carrying out the evacuation to the oil tank, and the gas in the oil tank is taken away along vacuum pipe for the inside negative pressure that forms of oil tank.
(3) Through setting up the locomotive, realize the holistic movable of testboard, improve the flexibility.
Drawings
Fig. 1 is a schematic structural diagram of a test bench according to an embodiment of the present application.
Reference numerals: 1. an oil tank; 2. an oil inlet assembly; 21. an oil inlet pipe; 22. a first ball valve; 23. a first pressure sensor; 3. an oil outlet assembly; 31. an oil outlet pipeline; 32. a second pressure sensor; 33. a flow meter; 34. a second ball valve; 4. a first filter; 5. a second filter; 6. a vacuum assembly; 61. a vacuum pipe; 62. a vacuum pump; 63. a third ball valve; 7. a positive pressure assembly; 71. a positive pressure conduit; 72. a fourth ball valve; 8. a liquid level gauge; 9. a safety valve; 10. and (5) moving the vehicle.
Detailed Description
The following description of the technical solutions of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. This application may be embodied in many different forms and is not limited to the embodiments described herein.
In the description of the present application, reference to the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.
In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, secured; or can be a detachable connection; or integrated into one piece; or may be a mechanical connection. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.
Some embodiments of the present application are described in detail below with reference to the accompanying drawings. Those skilled in the art may combine and combine the features of the different embodiments or examples and the different embodiments or examples presented in this application without conflict.
The embodiment of the application discloses a centrifugal booster pump testboard. Referring to fig. 1, the test stand includes a fuel tank 1, a fuel inlet assembly 2, and a fuel outlet assembly 3. The oil tank 1 is used for storing aviation kerosene or equivalent test liquid, and the effective capacity of the oil tank 1 is generally 3-7 times of the flow rate of the pump per minute. The capacity of the oil tank 1 can be selected smaller than that of equipment with good cooling effect lower than that of walking machinery, and for equipment with unlimited space and area, larger capacity is adopted, for example, the capacity of the oil tank 1 of a hydraulic system of a metallurgical machine is usually taken to be 7-10 times of the flow rate per minute, and the capacity of the oil tank 1 of the forging machine is usually taken to be 6-12 times of the flow rate per minute.
The oil inlet assembly 2 is communicated with the oil tank 1 and is connected with an inlet of the booster pump, oil in the oil tank 1 enters the oil inlet assembly 2, and the oil inlet assembly 2 is used for supplying oil for testing. The oil outlet component 3 is connected to the outlet of the booster pump and is communicated with the oil tank 1, and the tested oil flows back to the oil tank 1 through the oil outlet component 3 so as to realize the recycling of the oil in the oil tank 1.
The test steps are as follows: the inlet fuel pressure of the centrifugal booster pump is regulated to be 0.022-0.027 MPa (3.19-3.9 psi), the lubricating oil is poured into a lubricating oil port of the centrifugal booster pump, a blanking cover is installed, the driving rotating speed is slowly increased to 8828+/-15 r/min, and the outlet pressure of the booster pump is regulated to be 0.287-0.297 MPa (41.7-43.0 psi). And the oil in the oil tank 1 enters an inlet of the centrifugal booster pump and finally comes out from an outlet of the centrifugal booster pump, and whether the flow value (the flow is more than or equal to 800L/h) at the outlet meets the technical requirements is checked, so that the performance of the centrifugal booster pump is judged. According to the test parameters, the flow rate of the pump is more than or equal to 800L/h, namely more than or equal to 13.3lpm, and the volume of the oil tank 1 is calculated according to 5 times of the flow rate of the pump and is 66.5L. The total volume of the tank 1 is 83L, calculated as the effective volume is typically 80% of the total volume of the tank 1.
Specifically, the oil inlet assembly 2 comprises an oil inlet pipeline 21, a first ball valve 22 and a first pressure sensor 23, wherein the input end of the oil inlet pipeline 21 is communicated with the oil tank 1, and the output end of the oil inlet pipeline 21 is connected to the inlet of the centrifugal booster pump. The first ball valve 22 and the first pressure sensor 23 are both installed on the oil inlet pipe 21 and are sequentially arranged along the fluid flow direction of the oil inlet pipe 21, wherein the first pressure sensor 23 is close to the output end of the oil inlet pipe 21.
The oil in the oil tank 1 is conveyed to a centrifugal booster pump along an oil inlet pipeline 21, and a first ball valve 22 is used for controlling the switching and adjustment of the test oil to ensure the normal flow of the test oil in the oil inlet pipeline 21; the first pressure sensor 23 can detect the pressure of the oil entering the inlet of the booster pump, so that the pressure can be conveniently adjusted according to actual needs in the testing process, and the accuracy of the testing result is improved.
The oil outlet assembly 3 comprises an oil outlet pipeline 31, a second pressure sensor 32, a flowmeter 33 and a second ball valve 34, wherein the input end of the oil outlet pipeline 31 is connected to the outlet of the centrifugal booster pump, and the output end of the oil outlet pipeline 31 is communicated with the oil tank 1. The second pressure sensor 32, the flow meter 33 and the second ball valve 34 are all installed on the oil outlet pipe 31, and the three are sequentially arranged along the fluid flow direction of the oil outlet pipe 31.
The second pressure sensor 32 can detect the pressure of the test oil at the outlet of the booster pump, so that the operator can adjust the pressure according to the actual situation. The flow meter 33 can detect the flow value of the test oil at the outlet of the booster pump, and further determine whether the performance of the booster pump meets the requirement. The second ball valve 34 serves as a switch for controlling the flow of the test oil in the oil outlet pipe 31, and after the booster pump is tested, the test oil is returned to the oil tank 1 along the oil outlet pipe 31.
Furthermore, a first filter 4 is mounted on the oil inlet pipe 21, the first filter 4 being located between the oil tank 1 and the first ball valve 22 and being close to the input end of the oil inlet pipe 21. The first filter 4 can remove a small amount of solid particles in the test oil, and the clean filtrate is discharged from the outlet of the first filter 4. After being filtered by the first filter 4, the oil in the oil tank 1 enters the oil inlet pipeline 21 and is then conveyed to the booster pump so as to protect the normal operation of the booster pump and realize safety test.
The oil outlet pipe 31 is also provided with a second filter 5, and the second filter 5 is positioned between the oil tank 1 and the flowmeter 33 and is close to the output end of the oil outlet pipe 31. The second filter 5 can filter and remove impurities from the oil subjected to the test backflow, so that the cleanliness of the oil in the backflow state of the oil tank 1 is improved.
Optionally, in accordance with some embodiments of the present application, please refer to fig. 1. The test bench is respectively provided with a vacuum component 6 and a positive pressure component 7. The vacuum assembly 6 comprises a vacuum pipe 61, a vacuum pump 62 and a third ball valve 63, one end of the vacuum pipe 61 is communicated with the oil tank 1, the other end of the vacuum pipe is connected with the vacuum pump 62, the vacuum pump 62 is used for vacuumizing the oil tank 1, and air in the oil tank 1 is discharged through the vacuum pipe 61, so that negative pressure is formed inside the oil tank 1. The negative pressure in the oil tank 1 can cause oil to flow from the low pressure region to the high pressure region, thereby ensuring normal circulation of the oil. A third ball valve 63 is mounted on the vacuum pipe 61 between the oil tank 1 and the vacuum pump 62, and the third ball valve 63 is used to control the switching of the fluid in the vacuum pipe 61 so as to adjust the vacuum pressure inside the oil tank 1.
The positive pressure assembly 7 comprises a positive pressure pipeline 71 and a fourth ball valve 72, wherein one end of the positive pressure pipeline 71 is communicated with the oil tank 1, and the other end is communicated with the outside; a fourth ball valve 72 is mounted on the positive pressure conduit 71. By controlling the opening and closing of the fourth ball valve 72, the outside air can be introduced into the fuel tank 1 along the positive pressure pipe 71 to increase the air pressure in the fuel tank 1 and change the state of the negative pressure in the fuel tank 1.
Optionally, in accordance with some embodiments of the present application, please refer to fig. 1. The oil tank 1 is respectively provided with a liquid level meter 8 and a safety valve 9. The level gauge 8 is installed outside the oil tank 1 for detecting the level of the liquid inside the oil tank 1. When the oil needs to be filled into the oil tank 1, operators can conveniently observe the liquid level inside the oil tank 1 outside the oil tank 1 quickly and timely. The safety valve 9 is arranged on the oil tank 1, the safety valve 9 is a valve for protecting the safety of the system, and the pressure in the oil tank 1 can be automatically released after exceeding the set pressure, so that the overpressure is prevented from being used.
Optionally, in accordance with some embodiments of the present application, please refer to fig. 1. The test bench is installed on the mobile car 10, and the oil tank 1, the oil inlet assembly 2 and the oil outlet assembly 3 are all located on the mobile car 10, so that the whole test bench is convenient to transport, and the flexibility of testing is improved.
The implementation principle of the centrifugal booster pump test bench provided by the embodiment of the application is as follows: the test bench is used for testing the performance of the centrifugal booster pump. The test bench is integrally arranged on the mobile vehicle 10, and can be conveniently transported. The test bench comprises an oil tank 1, an oil inlet assembly 2, an oil outlet assembly 3, a vacuum assembly 6, a positive pressure assembly 7 and the like, and can monitor and manually adjust the pressure and flow of an inlet and an outlet of the pump. In addition, the oil tank 1 is provided with a liquid level meter 8, so that the oil filling quantity can be conveniently observed; the tank 1 is equipped with a safety valve 9, preventing overpressure use.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. The centrifugal booster pump test bench is characterized by comprising an oil tank (1), an oil inlet assembly (2) and an oil outlet assembly (3), wherein the oil inlet assembly (2) is connected with the oil tank (1), and the oil inlet assembly (2) is connected with an inlet of a centrifugal booster pump; the oil outlet component (3) is connected with an outlet of the centrifugal booster pump, and the oil outlet component (3) is connected with the oil tank (1);
the oil inlet assembly (2) comprises an oil inlet pipeline (21), a first ball valve (22) and a first pressure sensor (23), wherein the input end of the oil inlet pipeline (21) is connected with the oil tank (1), and the output end of the oil inlet pipeline (21) is used for being connected with an inlet of a centrifugal booster pump; the first ball valve (22) and the first pressure sensor (23) are sequentially arranged along the flow direction of the oil inlet pipeline (21), and the first pressure sensor (23) is close to the output end of the oil inlet pipeline (21);
the oil outlet assembly (3) comprises an oil outlet pipeline (31), a second pressure sensor (32), a flowmeter (33) and a second ball valve (34), wherein the input end of the oil outlet pipeline (31) is used for being connected with the outlet of the centrifugal booster pump, and the output end of the oil outlet pipeline (31) is connected with the oil tank (1); the second pressure sensor (32), the flowmeter (33) and the second ball valve (34) are sequentially arranged along the flow direction of the oil outlet pipeline (31).
2. A centrifugal booster pump test stand according to claim 1, further comprising a first filter (4), said first filter (4) being arranged on said inlet conduit (21), said first filter (4) being located between said tank (1) and said first ball valve (22).
3. A centrifugal booster pump test stand according to claim 1, further comprising a second filter (5), said second filter (5) being arranged on said outlet line (31), said second filter (5) being located between said tank (1) and said flow meter (33).
4. A centrifugal booster pump test stand according to claim 1, further comprising a vacuum assembly (6), the vacuum assembly (6) comprising a vacuum pipe (61), a vacuum pump (62) and a third ball valve (63), one end of the vacuum pipe (61) being connected to the oil tank (1) and the other end being connected to the vacuum pump (62), the vacuum pump (62) being for evacuating the oil tank (1), the third ball valve (63) being arranged between the oil tank (1) and the vacuum pump (62).
5. A centrifugal booster pump test stand according to claim 4, further comprising a positive pressure pipe (71) and a fourth ball valve (72), the positive pressure pipe (71) being in communication with the oil tank (1), the fourth ball valve (72) being provided on the positive pressure pipe (71).
6. A centrifugal booster pump test stand according to claim 1, further comprising a level gauge (8), the level gauge (8) being arranged outside the tank (1) for detecting the liquid level in the tank (1).
7. A centrifugal booster pump test stand according to claim 1, further comprising a safety valve (9), said safety valve (9) being provided on said tank (1).
8. A centrifugal booster pump test stand according to claim 1, further comprising a mobile cart (10), wherein the oil tank (1), the oil inlet assembly (2) and the oil outlet assembly (3) are all arranged on the mobile cart (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322351607.1U CN220667848U (en) | 2023-08-30 | 2023-08-30 | Centrifugal booster pump testboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322351607.1U CN220667848U (en) | 2023-08-30 | 2023-08-30 | Centrifugal booster pump testboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220667848U true CN220667848U (en) | 2024-03-26 |
Family
ID=90331760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322351607.1U Active CN220667848U (en) | 2023-08-30 | 2023-08-30 | Centrifugal booster pump testboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220667848U (en) |
-
2023
- 2023-08-30 CN CN202322351607.1U patent/CN220667848U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3867999A (en) | Method and apparatus for changing lube oil | |
| US11225888B2 (en) | Shared oil system arrangement for an engine component and a generator | |
| US9835120B2 (en) | Integral purge ejector tee arrangement in a turbocompressor | |
| EP3543048B1 (en) | Method for identifying and operating air purge in safe mode | |
| US10539077B2 (en) | Device for draining liquids for an aircraft engine | |
| CN102725155A (en) | Method for maintaining a vehicle air-conditioning unit and service apparatus therefor | |
| WO1998028059A1 (en) | Fuel intake device for fuel systems | |
| US6526808B1 (en) | Smoke and clean air generating machine for detecting presence and location of leaks in a fluid system | |
| US7571596B2 (en) | Vacuum system for membrane fuel stabilization unit | |
| US9593873B2 (en) | Manifold for a refrigerant recovery device and method | |
| CN220667848U (en) | Centrifugal booster pump testboard | |
| JP7341625B2 (en) | Suction device and suction wheel | |
| CN102954638B (en) | Refrigeration system and the method for operation refrigeration system | |
| US7270155B2 (en) | Gasoline vapor recycling system for gasoline tank | |
| CN113348297B (en) | Oil storage and filtration system | |
| CA2956828C (en) | Breather check valve | |
| US8316811B1 (en) | Method and apparatus for priming various components of a diesel engine | |
| US7484480B1 (en) | Apparatus and method for removing crankcase gases | |
| JP2010030622A (en) | Vapor recovery system | |
| CN216896734U (en) | Oil liquid filtering and supplying device and oil supplying equipment | |
| US9447998B2 (en) | Method and apparatus for improving the charge accuracy of a refrigerant recovery unit | |
| CN209875924U (en) | Automatic closing compensation structure for liquid discharge | |
| JP6110208B2 (en) | Fuel replenishment method and fuel replenishment device for liquid storage tank | |
| CN111619822A (en) | Pneumatic explosion-proof oiling equipment for civil aircraft fuel oil component | |
| CN206191235U (en) | Modular lubricating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |