CN214471733U - Mechanism for detecting performance of PRV valve on cylinder cover - Google Patents
Mechanism for detecting performance of PRV valve on cylinder cover Download PDFInfo
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- CN214471733U CN214471733U CN202120547271.4U CN202120547271U CN214471733U CN 214471733 U CN214471733 U CN 214471733U CN 202120547271 U CN202120547271 U CN 202120547271U CN 214471733 U CN214471733 U CN 214471733U
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- bottom plate
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Abstract
The utility model provides a mechanism for detecting PRV valve performance on cylinder head cover, include: the cylinder cover comprises a bottom plate, a pressing component and a detection component, wherein the bottom plate is used for placing the cylinder cover, the pressing component is used for pressing the cylinder cover on the bottom plate, and a seal is formed between the lower end surface of the cylinder cover and the upper surface of the bottom plate, a detection assembly is used for detecting the performance of a PRV valve on the cylinder cover and comprises a first air tank, a second air tank, an air inlet flowmeter and an air outlet flowmeter, the through hole which is communicated with the outside and the cavity inside the cylinder cover is arranged on the bottom plate, so that the first air tank is connected to the through hole through the air inlet flow meter, air can be supplied to the cavity inside the cylinder cover through the first air tank, the working state of the crankcase is simulated, the air outlet flowmeter is communicated with the air outlet pipe of the PRV valve, so that the air flow flowing out of the PRV valve can be detected, the working condition pipe of second air tank and PRV valve is linked together through making, can adjust the working condition of PRV valve, realizes detecting PRV valve technical effect of performance under different working conditions.
Description
Technical Field
The utility model relates to a cylinder head cover detection area, concretely relates to a mechanism for detecting cylinder head cover upper PRV valve performance.
Background
The cylinder cover is a cover covering on an engine cylinder body, can prevent external impurities from entering an engine, and in order to balance the pressure in a crankcase of the engine, most of the existing cylinder covers are also provided with PRV valves for adjusting the pressure in the crankcase, for example, Chinese patent CN207830005U discloses an integrated cylinder cover with PRV valves, but when the cylinder covers are detected, the airtightness of the cylinder cover can only be detected usually, and the usability of the PRV valves under different working conditions is difficult to detect.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's defect, providing a mechanism for detecting PRV valve performance on the cylinder head cover, this mechanism can detect the performance of PRV valve under different operating modes.
In order to achieve the above object, the utility model discloses a technical scheme is for detect the mechanism of cylinder head cover PRV valve performance, include:
the upper surface of the bottom plate is parallel to the horizontal plane, and the bottom plate is used for placing a cylinder cover;
the pressing assembly is used for pressing the cylinder cover on the bottom plate, so that a seal is formed between the lower end surface of the cylinder cover and the upper surface of the bottom plate;
a detection assembly for detecting performance of a PRV valve on the cylinder head cover;
the bottom plate is provided with a through hole for communicating the outside with the cavity inside the cylinder cover;
the detection assembly comprises a first air tank, an air inlet flow meter, an air outlet flow meter and a second air tank, the first air tank is connected to the through hole through the air inlet flow meter, the first air tank is used for supplying air to the inner cavity of the cylinder cover, the air outlet flow meter is communicated with an air outlet pipe of the PRV valve and used for detecting the flow of the air flowing out through the PRV valve, and the second air tank is communicated with a working condition pipe of the PRV valve and used for adjusting the working condition of the PRV valve.
Preferably, the first air tank is located below the floor, the first air tank being connected in series between an air supply and the intake air flow meter.
Further preferably, a pressure sensor is provided on the first air tank for monitoring the pressure in the first air tank in order to stabilize the pressure in the first air tank.
Preferably, the second air tank is a negative pressure tank, and the second air tank is connected in series between a vacuum source and the working condition pipe.
Further preferably, the pressing assembly comprises a pressing plate which is arranged above the bottom plate in a vertically movable mode and a plurality of pressing rods which are arranged on the pressing plate and extend downwards, and when the pressing plate moves downwards to a set position, the lower end portions of the pressing rods abut against the upper surface of the cylinder cover to press the cylinder cover on the bottom plate.
Further preferably, a plurality of guide posts extending upwards are arranged on the bottom plate, and the guide posts penetrate through the guide holes in the pressing plate.
Further preferably, the pressing assembly further comprises a driving cylinder for driving the pressing plate to move up and down.
Further preferably, the driving cylinder is arranged above the pressing plate, and the end of a cylinder rod of the driving cylinder is connected with the center of the pressing plate.
Further preferably, the pressing rod is movably inserted into the pressing plate up and down.
Further preferably, a spring is sleeved on the pressing rod, two end portions of the spring respectively abut against the pressing rod and the pressing plate, and the spring has a tendency of driving the pressing rod to move downwards.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
the utility model provides a mechanism for detecting PRV valve performance on cylinder head cover, include: the cylinder cover comprises a bottom plate, a pressing component and a detection component, wherein the bottom plate is used for placing the cylinder cover, the pressing component is used for pressing the cylinder cover on the bottom plate, and a seal is formed between the lower end surface of the cylinder cover and the upper surface of the bottom plate, a detection assembly is used for detecting the performance of a PRV valve on the cylinder cover and comprises a first air tank, a second air tank, an air inlet flowmeter and an air outlet flowmeter, the through hole which is communicated with the outside and the cavity inside the cylinder cover is arranged on the bottom plate, so that the first air tank is connected to the through hole through the air inlet flow meter, air can be supplied to the cavity inside the cylinder cover through the first air tank, the working state of the crankcase is simulated, the air outlet flowmeter is communicated with the air outlet pipe of the PRV valve, so that the air flow flowing out of the PRV valve can be detected, the working condition pipe of second air tank and PRV valve is linked together through making, can adjust the working condition of PRV valve, realizes detecting PRV valve technical effect of performance under different working conditions.
Drawings
Fig. 1 is a schematic front view of the preferred embodiment of the present invention, and a part of the gas path connection is not shown.
Fig. 2 is a schematic sectional view in the direction of a-a in fig. 1.
Wherein:
10. a base plate; 12. a guide post; 20. a compression assembly; 21. a compression plate; 22. a hold down bar; 23. a driving cylinder; 24. a spring; 30. a detection component; 31. a first air tank; 311. a pressure sensor; 32. a second air tank; 33. an intake air flow meter; 34. an outlet flow meter; 40. a cylinder head cover; an outlet pipe of the PRV valve; working condition pipe of PRV valve; 50. a gas source; 60. a vacuum source.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more easily understand the advantages and features of the present invention, and to make clear and definite definitions of the protection scope of the present invention.
The up-down direction described in the present invention is the up-down direction in fig. 1.
As shown in fig. 1-2, the utility model provides a mechanism for detecting PRV valve performance on cylinder head cover, include: the device comprises a base plate 10, a pressing assembly 20 and a detection assembly 30, wherein the upper surface of the base plate 10 is parallel to a horizontal plane, and the base plate 10 is used for placing a cylinder cover 40; the compressing assembly 20 is used for compressing the cylinder cover cap 40 on the bottom plate 10, and a sealing ring is arranged on the lower end surface of the cylinder cover cap 40, so that sealing can be formed between the lower end surface of the cylinder cover cap 40 and the upper surface of the bottom plate 10; the sensing assembly 30 is used to sense the performance of the PRV valve on the cylinder head cover 40; a through hole for communicating the outside and the cavity inside the cylinder cover 40 is formed in the bottom plate 10; the detection assembly 30 comprises a first air tank 31, an air inlet flow meter 33, an air outlet flow meter 34 and a second air tank 32, specifically, the first air tank 31 is connected to the through hole through the air inlet flow meter 33, the first air tank 31 is used for supplying air to the inner cavity of the cylinder cover 40, the air outlet flow meter 33 is communicated with an air outlet pipe 41 of the PRV valve and is used for detecting the flow of the air flowing out through the PRV valve, and the second air tank 32 is communicated with a working condition pipe 42 of the PRV valve and is used for adjusting the working condition of the PRV valve.
For convenience of arrangement, the first air tank 31 is located below the bottom plate 10, the first air tank 31 is connected in series between the air source 50 and the air intake flow meter 33, and in order to keep the air pressure in the first air tank 31 constant and reduce the detection error caused by the fluctuation of the air intake pressure, it is preferable that the first air tank 31 is provided with a pressure sensor 311, and the pressure sensor 311 is used for monitoring the pressure in the first air tank 31 so as to stabilize the pressure in the first air tank 31.
The second air tank 32 is a negative pressure tank, and the second air tank 32 is connected in series between the vacuum source 60 and the condition tube 42 of the PRV valve.
In order to improve the pressing effect of the cylinder cover 40, the pressing assembly 20 includes a pressing plate 21 disposed above the base plate 10 in a vertically movable manner and a plurality of pressing rods 22 disposed on the pressing plate 21 and extending downward, and when the pressing plate 21 moves downward to a set position, lower end portions of the pressing rods 22 abut against an upper surface of the cylinder cover 40 to press the cylinder cover 40 against the base plate 10.
The bottom plate 10 is provided with a plurality of guide posts 12 extending upwards, the guide posts 12 penetrate through guide holes in the pressing plate 21, the pressing assembly 20 further comprises a driving cylinder 23 used for driving the pressing plate 21 to move up and down, the driving cylinder 23 is arranged above the pressing plate 21, and the end part of a cylinder rod of the driving cylinder 23 is connected with the center of the pressing plate 21.
In order to further optimize the compressing effect, the compressing rod 22 can be vertically and vertically arranged on the compressing plate 21 in a penetrating mode, a spring 24 is sleeved on the compressing rod 22, two end portions of the spring 24 are respectively abutted to the compressing rod 22 and the compressing plate 21, and the spring 24 has a tendency of driving the compressing rod 22 to move downwards, so that the compressing rod 22 can compress cylinder covers with different upper surface shapes.
The utility model provides a mechanism for detecting PRV valve performance on cylinder head cover, through set up the through-hole of the external and cylinder head cover inside cavity of intercommunication on the bottom plate, make first air tank connect on the through-hole through the flowmeter that admits air, can feed gas to the inside cavity of cylinder head cover through first air tank, the operating condition of simulation crankcase, outlet duct through making the flowmeter of giving vent to anger and PRV valve is linked together, can detect the gas flow who flows through the PRV valve, working condition pipe through making second air tank and PRV valve is linked together, can adjust the operating mode of PRV valve, realize detecting the technological effect of PRV valve performance under different work condition.
The above embodiments are only for illustrating the technical conception and the features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A mechanism for testing PRV valve performance on a cylinder head cover, comprising:
the upper surface of the bottom plate is parallel to the horizontal plane, and the bottom plate is used for placing a cylinder cover;
the pressing assembly is used for pressing the cylinder cover on the bottom plate, so that a seal is formed between the lower end surface of the cylinder cover and the upper surface of the bottom plate;
a detection assembly for detecting performance of a PRV valve on the cylinder head cover;
the method is characterized in that:
the bottom plate is provided with a through hole for communicating the outside with the cavity inside the cylinder cover;
the detection assembly comprises a first air tank, an air inlet flow meter, an air outlet flow meter and a second air tank, the first air tank is connected to the through hole through the air inlet flow meter, the first air tank is used for supplying air to the inner cavity of the cylinder cover, the air outlet flow meter is communicated with an air outlet pipe of the PRV valve and used for detecting the flow of the air flowing out through the PRV valve, and the second air tank is communicated with a working condition pipe of the PRV valve and used for adjusting the working condition of the PRV valve.
2. The mechanism for testing performance of a PRV valve on a cylinder head cover according to claim 1, wherein: the first air tank is located below the bottom plate and is connected in series between an air source and the intake air flow meter.
3. The mechanism for testing performance of a PRV valve on a cylinder head cover according to claim 2, wherein: the first air tank is provided with a pressure sensor, and the pressure sensor is used for monitoring the pressure in the first air tank so as to stabilize the pressure of the first air tank.
4. The mechanism for testing performance of a PRV valve on a cylinder head cover according to claim 1, wherein: the second air tank is a negative pressure tank and is connected in series between the vacuum source and the working condition pipe.
5. The mechanism for testing performance of a PRV valve on a cylinder head cover according to any one of claims 1 to 4, wherein: the pressing assembly comprises a pressing plate which is arranged above the bottom plate in a vertically movable mode and a plurality of pressing rods which are arranged on the pressing plate and extend downwards, and when the pressing plate moves downwards to a set position, the lower end portions of the pressing rods abut against the upper surface of the cylinder cover to press the cylinder cover on the bottom plate.
6. The mechanism for testing performance of a PRV valve on a cylinder head cover according to claim 5, wherein: the bottom plate is provided with a plurality of guide posts extending upwards, and the guide posts penetrate through the guide holes in the pressing plate.
7. The mechanism for testing performance of a PRV valve on a cylinder head cover according to claim 5, wherein: the pressing assembly further comprises a driving air cylinder for driving the pressing plate to move up and down.
8. The mechanism for testing performance of a PRV valve on a cylinder head cover according to claim 7, wherein: the driving cylinder is arranged above the pressing plate, and the end part of a cylinder rod of the driving cylinder is connected with the center of the pressing plate.
9. The mechanism for testing performance of a PRV valve on a cylinder head cover according to claim 5, wherein: the pressing rod can penetrate through the pressing plate in a vertically moving mode.
10. The mechanism for testing performance of a PRV valve on a cylinder head cover according to claim 9, wherein: the pressing rod is sleeved with a spring, two end parts of the spring respectively abut against the pressing rod and the pressing plate, and the spring has a tendency of driving the pressing rod to move downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120547271.4U CN214471733U (en) | 2021-03-17 | 2021-03-17 | Mechanism for detecting performance of PRV valve on cylinder cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120547271.4U CN214471733U (en) | 2021-03-17 | 2021-03-17 | Mechanism for detecting performance of PRV valve on cylinder cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214471733U true CN214471733U (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120547271.4U Active CN214471733U (en) | 2021-03-17 | 2021-03-17 | Mechanism for detecting performance of PRV valve on cylinder cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214471733U (en) |
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2021
- 2021-03-17 CN CN202120547271.4U patent/CN214471733U/en active Active
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