CN220230960U - Air inlet pressure stabilizing device for low-power engine bench test - Google Patents
Air inlet pressure stabilizing device for low-power engine bench test Download PDFInfo
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- CN220230960U CN220230960U CN202321803656.8U CN202321803656U CN220230960U CN 220230960 U CN220230960 U CN 220230960U CN 202321803656 U CN202321803656 U CN 202321803656U CN 220230960 U CN220230960 U CN 220230960U
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- air inlet
- air
- cylinder
- low
- bench test
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- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 18
- 239000003381 stabilizer Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 230000001052 transient effect Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 6
- 238000005192 partition Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
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- Testing Of Engines (AREA)
Abstract
The utility model discloses an air inlet pressure stabilizing device for a low-power engine bench test, which comprises an air outlet cylinder and an air inlet cylinder which are arranged in an up-down communication mode and are overlapped in an axis, wherein an air inlet used for being communicated with an air outlet of an air inlet air conditioner is arranged at a position, close to the lower end, of the side wall of the air inlet cylinder, an air outlet used for being communicated with an air inlet of an engine is arranged at a position, close to the upper end, of the side wall of the air outlet cylinder, at least two spoilers are arranged in the air outlet cylinder and the air inlet cylinder at intervals up and down, each spoiler extends from the inner side wall of the corresponding air cylinder towards the center, any two spoilers adjacent up and down are arranged in a staggered mode, and the projection of all spoilers in each air cylinder along the axial direction of the corresponding air cylinder is circular. Through setting up buffer space and extension gas path, guarantee the stability of air input and air inlet pressure when steady state and transient state bench test of engine.
Description
Technical Field
The utility model belongs to the technical field of engine bench tests, and particularly relates to an air inlet pressure stabilizing device for a low-power engine bench test.
Background
For an engine with the power not exceeding 20kW, a supercharger is not arranged at an air inlet end usually, but in bench test, insufficient air inlet often occurs due to pressure delay of an air inlet pipeline or pressure of an air inlet air conditioner pipeline, and further, the conditions of engine response lag, engine efficiency reduction, exceeding of tail gas pollutants and the like occur. In chinese patent CN208366614U, an air inlet pressure stabilizer for bench test of gasoline engine is disclosed, and specifically a pressure stabilizing box, a porous partition plate is arranged at one side of the air inlet of the pressure stabilizing box, and by setting a cavity with the porous partition plate, the stability of air inlet amount and air inlet pressure during bench test of the engine is ensured. The porous partition plate is arranged to enable the resistance of gas to be larger when the gas flows, so that the device can only solve the problem of the air inlet pressure of the engine in a steady-state test, but cannot solve the problem of the air inlet pressure in a transient test.
Disclosure of Invention
Aiming at the problems existing in the prior art, the utility model aims to provide the air inlet pressure stabilizing device for the low-power engine bench test, and the air inlet quantity and the air inlet pressure of the engine in steady-state and transient bench tests are ensured to be stable by arranging the buffer space and prolonging the air path.
The technical scheme adopted by the utility model is as follows: the utility model provides a low-power engine bench test is with pressure stabilizing device that admits air, including upper and lower intercommunication setting and the gas outlet tube and the gas inlet tube of axis coincidence, the position department that the lateral wall of gas inlet tube is close to the lower extreme is provided with the air inlet that is used for with the air conditioner air outlet intercommunication of admitting air, the position department that the lateral wall of gas outlet tube is close to the upper end is provided with the gas outlet that is used for with engine air inlet intercommunication, the interval is provided with two piece at least spoilers about gas outlet tube and the gas inlet tube in all, and every spoiler extends towards the center by the inside wall that corresponds the gas cylinder, adjacent two spoilers all dislocation set about wantonly, and all spoilers in every gas cylinder are circular along the axial projection of corresponding gas cylinder.
As a preferable mode in the above-mentioned scheme, the number of spoilers in each inflator is set to two.
Further preferably, the spoiler is provided as a semicircular plate matched with the inner diameter of the corresponding inflator.
Further preferably, the air inlets are disposed on opposite sides of the lowermost spoiler and the air outlets are disposed on opposite sides of the uppermost spoiler.
Further preferably, the upper end of the air inlet cylinder is provided with a lower mounting flange, the lower end of the air outlet cylinder is provided with an upper mounting flange matched with the lower mounting flange, and the lower mounting flange is connected with the upper mounting flange through a bolt and nut assembly.
Further preferably, a gasket is provided between the lower mounting flange and the upper mounting flange.
Further preferably, the inner diameter of the air inlet cylinder is equal to the inner diameter of the air outlet cylinder.
Further preferably, a support frame for supporting the air intake cylinder is also provided.
Further preferably, the axes of the air inlet and the air outlet are both horizontally arranged, and the air inlet and the air outlet are oppositely arranged.
Further preferably, the bottom of the air inlet cylinder is of an inverted cone structure with a high middle low side surface, and a drain valve is arranged in the center of the bottom of the air inlet cylinder.
The utility model has the beneficial effects that: the whole device forms a buffer space through the air inlet cylinder and the air outlet cylinder, and meanwhile, the spoiler capable of prolonging the air path is arranged in the buffer space, the adjacent spoilers are arranged in a staggered mode, and all spoilers in each air inlet cylinder are circular along the projection of the corresponding air inlet cylinder in the axial direction, so that the resistance formed by the spoilers is not too large, and the stability of the air inflow and the air inflow pressure of the engine in steady-state and transient bench test can be ensured.
Drawings
FIG. 1 is a schematic diagram of the present utility model.
Fig. 2 is a cross-sectional view of the section line M-M in fig. 1.
Fig. 3 is a perspective view of the present utility model.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in figures 1-3, the air inlet pressure stabilizing device for the low-power engine bench test mainly comprises an air outlet cylinder 1, an air inlet cylinder 2, a spoiler 3 and a blow-down valve 4. Wherein the air outlet cylinder 1 and the air inlet cylinder 2 are arranged up and down and have the axis coincident, and the inner cavity of the air inlet cylinder is communicated with the inner cavity of the air outlet cylinder. An air outlet 1a for communicating with an air inlet of the engine is provided at a position of a side wall of the air outlet tube 1 near an upper end, and an air inlet 2a for communicating with an air outlet of the air inlet air conditioner is provided at a position of a side wall of the air inlet tube 2 near a lower end.
At least two spoilers 3 are arranged in the air outlet cylinder 1 and the air inlet cylinder 2 at intervals from top to bottom, each spoiler 3 extends from the inner side wall of the corresponding air cylinder towards the center, the arrangement of the spoilers can further prolong the air path, the air inflow and the air inlet pressure of the engine are guaranteed, meanwhile, two spoilers 3 adjacent from top to bottom at random are arranged in a staggered mode, all spoilers 3 in each air cylinder are circular along the projection of the corresponding air cylinder in the axial direction, the resistance formed by the spoilers cannot be too large, and the stability of the air inflow and the air inlet pressure during transient bench test of the engine can be met.
Preferably, the inner diameter of the air inlet cylinder 2 is equal to the inner diameter of the air outlet cylinder 1, the number of spoilers 3 in each air cylinder is two, then the spoilers 3 are arranged as semicircular plates matched with the inner diameters of the corresponding air cylinders, the air inlet 2a is arranged on the opposite side of the lowest spoiler 3, the air outlet 1a is arranged on the opposite side of the uppermost spoiler 3, and the axes of the air inlet 2a and the air outlet 1a are horizontally arranged.
In order to facilitate the installation of the air outlet cylinder and the air inlet cylinder, a lower installation flange 2b is arranged at the upper end of the air inlet cylinder 2, an upper installation flange 1b matched with the lower installation flange 2b is arranged at the lower end of the air outlet cylinder 1, and the lower installation flange 2b is connected with the upper installation flange 1b through a bolt and nut assembly 5. Meanwhile, in order to ensure sealability, a gasket 6 is provided between the lower mounting flange 2b and the upper mounting flange 1 b.
To facilitate the support of the whole device, a support frame 7 is also provided, and the support frame is located below the lower mounting flange.
Preferably, the bottom of the air intake cylinder 2 is provided with a reverse taper structure with a high middle low side, and a drain valve 4 is provided at the center of the bottom of the air intake cylinder 2.
In the embodiment, the air inlet cylinder is a cylinder with an unsealed upper end, the air outlet cylinder is a cylinder with an unsealed lower end, and the air inlet and the air outlet of the air inlet air conditioner and the air outlet and the air inlet of the engine are connected through silica gel pipes.
Claims (10)
1. An air inlet voltage stabilizer for a low-power engine bench test, which is characterized in that: including upper and lower intercommunication setting and the gas outlet cylinder (1) and the inlet tube (2) of axis coincidence, the lateral wall department that is close to the upper end of gas outlet cylinder (1) is provided with gas outlet (1 a) that is used for with engine air inlet intercommunication, the lateral wall department that is close to the lower extreme of inlet tube (2) is provided with air inlet (2 a) that are used for with the air conditioner air outlet intercommunication of admitting air, all upper and lower interval is provided with two piece at least spoilers (3) in gas outlet cylinder (1) and inlet tube (2), and every spoiler (3) extend towards the center by the inside wall that corresponds the inflator, and two spoilers (3) adjacent from top to bottom are all dislocation set wantonly, and all spoilers (3) in every inflator are circular along corresponding the axial projection of inflator.
2. The intake air pressure stabilizing device for low-power engine bench test according to claim 1, wherein: the number of the spoilers (3) in each inflator is two.
3. The intake air pressure stabilizing device for low-power engine bench test according to claim 2, wherein: the spoiler (3) is arranged as a semicircular plate matched with the inner diameter of the corresponding inflator.
4. The intake air pressure stabilizing device for low power engine bench test of claim 3, wherein: the air inlet (2 a) is arranged on the opposite side of the lowest spoiler (3), and the air outlet (1 a) is arranged on the opposite side of the highest spoiler (3).
5. The intake air pressure stabilizing device for low-power engine bench test according to claim 1, wherein: the upper end of an air inlet cylinder (2) is provided with a lower mounting flange (2 b), the lower end of an air outlet cylinder (1) is provided with an upper mounting flange (1 b) matched with the lower mounting flange (2 b), and the lower mounting flange (2 b) is connected with the upper mounting flange (1 b) through a bolt and nut assembly (5).
6. The intake air pressure stabilizing device for low power engine bench test of claim 5, wherein: a sealing gasket (6) is arranged between the lower mounting flange (2 b) and the upper mounting flange (1 b).
7. The intake air pressure stabilizing device for low-power engine bench test according to claim 1, wherein: the inner diameter of the air inlet cylinder (2) is equal to the inner diameter of the air outlet cylinder (1).
8. The intake air pressure stabilizing device for low-power engine bench test according to claim 1, wherein: also provided with a support frame (7) for supporting the air intake cylinder (2).
9. The intake air pressure stabilizing device for low-power engine bench test according to claim 1, wherein: the axes of the air inlet (2 a) and the air outlet (1 a) are horizontally arranged, and the air inlet (2 a) and the air outlet (1 a) are oppositely arranged.
10. The intake air pressure stabilizing device for low-power engine bench test according to claim 1, wherein: the bottom of the air inlet cylinder (2) is of an inverted cone structure with a high middle low side surface, and a drain valve (4) is arranged in the center of the bottom of the air inlet cylinder (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321803656.8U CN220230960U (en) | 2023-07-10 | 2023-07-10 | Air inlet pressure stabilizing device for low-power engine bench test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321803656.8U CN220230960U (en) | 2023-07-10 | 2023-07-10 | Air inlet pressure stabilizing device for low-power engine bench test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220230960U true CN220230960U (en) | 2023-12-22 |
Family
ID=89173314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321803656.8U Active CN220230960U (en) | 2023-07-10 | 2023-07-10 | Air inlet pressure stabilizing device for low-power engine bench test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220230960U (en) |
-
2023
- 2023-07-10 CN CN202321803656.8U patent/CN220230960U/en active Active
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