CN202614486U - Automotive fuel pipe air impermeability differential pressure leakage detection device - Google Patents
Automotive fuel pipe air impermeability differential pressure leakage detection device Download PDFInfo
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- CN202614486U CN202614486U CN 201220208040 CN201220208040U CN202614486U CN 202614486 U CN202614486 U CN 202614486U CN 201220208040 CN201220208040 CN 201220208040 CN 201220208040 U CN201220208040 U CN 201220208040U CN 202614486 U CN202614486 U CN 202614486U
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- solenoid valve
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- tracheae
- pressure solenoid
- threeway
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Abstract
The utility model discloses an automotive fuel pipe air impermeability differential pressure leakage detection device, comprising a gas-liquid pressure cylinder, a filter, a pressure gage, high-pressure solenoid valves and a silencer. One end of the filter is connected with the gas-liquid pressure cylinder through a gas pipe while the other end thereof is provided with a tee joint through the gas pipe, and the tee joint is connected with the high-pressure solenoid valve V1 via the gas pipe and a throttle valve; the other end of the high-pressure solenoid valve V1 is provided with one tee joint through the gas pipe, and the tee joint is respectively connected with the high-pressure solenoid valve V2 and the high-pressure solenoid valve V3 via the gas pipe and another tee joint; the other end of the high-pressure solenoid valve V3 is connected with a detected end via the gas pipe and a four-way piece, and the high-pressure solenoid valve V2 is also connected with a standard end via the gas pipe and the tee joint; the four-way piece between the high-pressure solenoid valve V3 and the detected end and the tee joint between the high-pressure solenoid valve V2 and the standard end are further provided with differential pressure transmitters, and the four-way piece between the high-pressure solenoid valve V3 and the detected end is further provided with an absolute pressure transmitter through the gas pipe. The automotive fuel pipe air impermeability differential pressure leakage detection device has the advantages of being compact in structure, simple to operate, reliable, high in precision and easy to operate.
Description
Technical field
The utility model relates to airtight differential pressure leakage detection apparatus, is specifically related to the airtight differential pressure leakage detection apparatus of a kind of vehicle fuel pipeline.
Background technology
During immersion water was pickled with grains or in wine after the detection of present vehicle fuel pipe envelope property generally used manual fixing; See that whether having bubble to produce judges whether its sealing is qualified; But owing to be through the artificial visually examine; When micro-bubble produces and attaches turbidly during at anchor clamps or in the blind area, visual angle,, all artificial erroneous judgement can be arranged when the operator estimates when producing visual fatigue for a long time; Product is after finishing surface treatment; Through water inspection, increase oven dry means such as processing more again, guarantee the quality behind its product export; When artificial erroneous judgement product flow in client's hand, not only can influence self prestige and also might cause product lot quantity to be return and heavy economic lossess such as claim compensation; Along with the development of present art of pressure sensors, increasing vehicle fuel pipe manufacturing enterprise hopes to substitute the artificial visually examine through sensor, and not only work efficiency can be guaranteed; The employee only needs simple training just can operate; Simultaneously can guarantee product quality.At present, sensor technology relies on reliable, high precision and the characteristic such as easy to operate of self, is widely used in automobile and parts leak test industry, has proposed therefore that sensor is judged based on using, the semi-automatic leakage testing device of PLC control.
The utility model content
The utility model technical matters to be solved be to provide a kind of compact conformation, simple to operate, reliable, precision is high, the airtight differential pressure leakage detection apparatus of easy-operating automotive oil drain pan.
The utility model technical matters to be solved adopts following technical scheme to realize,
The airtight differential pressure leakage detection apparatus of vehicle fuel pipeline; Comprise pneumohydraulic pressure-cylinder, filtrator, tensimeter, high-pressure solenoid valve, sound suppressor; It is characterized in that: described filtrator one end links to each other with pneumohydraulic pressure-cylinder through tracheae; Described filtrator is the moisture that filters in the reason equipment low-pressure gas source, reaches the life-span of protection pneumatic element; The other end is provided with threeway through tracheae; Described threeway links to each other with high-pressure solenoid valve V1 through tracheae and through throttling valve; The other end of described high-pressure solenoid valve V1 is provided with threeway through tracheae; Described threeway connects high-pressure solenoid valve V2 and high-pressure solenoid valve V3 respectively through tracheae and through threeway, and the described high-pressure solenoid valve V3 other end links to each other with tested end through tracheae and through four-way, and described high-pressure solenoid valve V2 links to each other with normal end through tracheae and through threeway; Four-way place between described high-pressure solenoid valve V3 and the tested end and threeway place between high-pressure solenoid valve V2 and the normal end also are provided with differential pressure transmitter through tracheae, and the four-way place between described high-pressure solenoid valve V3 and the tested end also is provided with the absolute pressure transmitter through tracheae.
Threeway place between described filtrator and the throttling valve 4 also is provided with reduction valve through tracheae, is power output when pressing down speed and following means of press seals as the adjusting pneumohydraulic pressure-cylinder.
The other end of said reduction valve links to each other with pilot solenoid valve through tracheae and through threeway, is as the control pneumohydraulic pressure-cylinder.
Threeway place between described reduction valve and the pilot solenoid valve also is provided with tensimeter through tracheae, as the operating air pressure that detects pneumohydraulic pressure-cylinder in real time.
Threeway place of described high-pressure solenoid valve V1 position links to each other with sound suppressor through tracheae and through high-pressure solenoid valve V4, is to play when letting out except that detected air pressure after accomplishing as the product detection to abate the noise.
The beneficial effect of the utility model is: compact conformation, simple to operate, simultaneously reliable, precision is high, easy to operate.
Description of drawings
Fig. 1 is the utility model system architecture synoptic diagram.
Wherein: the 1-pneumohydraulic pressure-cylinder; The 2-filtrator; The 3-threeway; The 4-throttling valve; 50-high-pressure solenoid valve V1; 51-high-pressure solenoid valve V2; 52-high-pressure solenoid valve V3; 53-high-pressure solenoid valve V4; The tested end of 6-; The 7-normal end; The 8-differential pressure transmitter; 9-absolute pressure transmitter; The 10-sound suppressor; The 11-four-way; The 12-reduction valve; The 13-tensimeter; The 14-pilot solenoid valve.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1; The airtight differential pressure leakage detection apparatus of vehicle fuel pipeline; Comprise pneumohydraulic pressure-cylinder 1, filtrator 2, tensimeter 3, high-pressure solenoid valve, sound suppressor 10; It is characterized in that: described filtrator 2 one ends link to each other with pneumohydraulic pressure-cylinder 1 through tracheae, and described filtrator 2 is the moisture that filters in the reason equipment low-pressure gas source, reach the life-span of protection pneumatic element; The other end is provided with threeway 3 through tracheae; Described threeway 3 links to each other with high-pressure solenoid valve V150 through tracheae and through throttling valve 4; The other end of described high-pressure solenoid valve V150 is provided with threeway 3 through tracheae; Described threeway 3 connects high-pressure solenoid valve V251 and high-pressure solenoid valve V352 respectively through tracheae and through threeway 3; The described high-pressure solenoid valve V352 other end links to each other with tested end 6 through tracheae and through four-way 11, and described high-pressure solenoid valve V251 links to each other with normal end 7 through tracheae and through threeway 3; Four-way 11 places between described high-pressure solenoid valve V352 and the tested end 6 and threeway 3 places between high-pressure solenoid valve V251 and the normal end 7 also are provided with differential pressure transmitter 8 through tracheae, and four-way 11 places between described high-pressure solenoid valve V352 and the tested end 6 also are provided with absolute pressure transmitter 9 through tracheae.
Threeway 3 places between described filtrator 2 and the throttling valve 4 also are provided with reduction valve 12 through tracheae, are power outputs when pressing down speed and following means of press seals as the adjusting pneumohydraulic pressure-cylinder.
The other end of said reduction valve 12 links to each other with pilot solenoid valve 14 through tracheae and through threeway 3, is as the control pneumohydraulic pressure-cylinder.
Threeway 3 places between described reduction valve 12 and the pilot solenoid valve 14 also are provided with tensimeter 13 through tracheae, as the operating air pressure that detects pneumohydraulic pressure-cylinder in real time.
Threeway 3 places of described high-pressure solenoid valve V151 position link to each other with sound suppressor 10 through tracheae and through high-pressure solenoid valve V453, are to play when letting out except that detected air pressure after accomplishing as the product detection to abate the noise.
The principle of work of the utility model: when detecting, begin to export gas through pneumohydraulic pressure-cylinder, when output gas, high-pressure solenoid valve V1, V2, V3 open, and high-pressure solenoid valve V4 closes; When the air pressure of absolute pressure sensor reaches 120KPa, close high-pressure solenoid valve V1, balance 8 seconds; When balance shows automatically after 10 seconds that vertical compression changes; The vertical compression variation that is detected can be presented on the screen, and after showing 3 seconds, close high-pressure solenoid valve V2 and high-pressure solenoid valve V3 this moment, and balance was carried out data acquisition with detected differential pressure through differential pressure transmitter after 3 seconds.
After detection finishes; Open high-pressure solenoid valve V2, V3, V4; The high-pressure solenoid valve V1 of this moment is in closed condition; At this moment institute's body then can be discharged through tracheae and through high-pressure solenoid valve V2, V3, V4 and sound suppressor, owing to can produce sound in the moment of discharging gas, can sound be eliminated through sound suppressor.
More than show and described ultimate principle of the utility model and the advantage of principal character and the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the instructions that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (5)
1. the airtight differential pressure leakage detection apparatus of vehicle fuel pipeline; Comprise pneumohydraulic pressure-cylinder, filtrator, tensimeter, high-pressure solenoid valve, sound suppressor; It is characterized in that: described filtrator one end links to each other with pneumohydraulic pressure-cylinder through tracheae; The other end is provided with threeway through tracheae; Described threeway links to each other with high-pressure solenoid valve V1 through tracheae and through throttling valve, and the other end of described high-pressure solenoid valve V1 is provided with threeway through tracheae, and described threeway connects high-pressure solenoid valve V2 and high-pressure solenoid valve V3 respectively through tracheae and through threeway; The described high-pressure solenoid valve V3 other end links to each other with tested end through tracheae and through four-way, and described high-pressure solenoid valve V2 links to each other with normal end through tracheae and through threeway; Four-way place between described high-pressure solenoid valve V3 and the tested end and threeway place between high-pressure solenoid valve V2 and the normal end also are provided with differential pressure transmitter through tracheae, and the four-way place between described high-pressure solenoid valve V3 and the tested end also is provided with the absolute pressure transmitter through tracheae.
2. according to the airtight differential pressure leakage detection apparatus of the said vehicle fuel pipeline of claim 1, it is characterized in that: threeway place between described filtrator and the throttling valve also is provided with reduction valve through tracheae.
3. according to the airtight differential pressure leakage detection apparatus of the said vehicle fuel pipeline of claim 2, it is characterized in that: the other end of said reduction valve links to each other with pilot solenoid valve through tracheae and through threeway.
4. according to the airtight differential pressure leakage detection apparatus of the said vehicle fuel pipeline of claim 2, it is characterized in that: threeway place between described reduction valve and the pilot solenoid valve also is provided with tensimeter through tracheae.
5. according to the airtight differential pressure leakage detection apparatus of the said vehicle fuel pipeline of claim 1, it is characterized in that: threeway place of described high-pressure solenoid valve V1 position links to each other with sound suppressor through tracheae and through high-pressure solenoid valve V4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220208040 CN202614486U (en) | 2012-05-10 | 2012-05-10 | Automotive fuel pipe air impermeability differential pressure leakage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220208040 CN202614486U (en) | 2012-05-10 | 2012-05-10 | Automotive fuel pipe air impermeability differential pressure leakage detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202614486U true CN202614486U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220208040 Expired - Fee Related CN202614486U (en) | 2012-05-10 | 2012-05-10 | Automotive fuel pipe air impermeability differential pressure leakage detection device |
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| CN (1) | CN202614486U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091059A (en) * | 2012-12-21 | 2013-05-08 | 青岛大学 | Leakage real-time self-closing system |
| CN103558000A (en) * | 2013-10-16 | 2014-02-05 | 合肥远智自动化科技有限公司 | Rapid-detection control method used for differential leak detector |
-
2012
- 2012-05-10 CN CN 201220208040 patent/CN202614486U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091059A (en) * | 2012-12-21 | 2013-05-08 | 青岛大学 | Leakage real-time self-closing system |
| CN103091059B (en) * | 2012-12-21 | 2015-05-06 | 青岛大学 | Leakage real-time self-closing system |
| CN103558000A (en) * | 2013-10-16 | 2014-02-05 | 合肥远智自动化科技有限公司 | Rapid-detection control method used for differential leak detector |
| CN103558000B (en) * | 2013-10-16 | 2015-11-25 | 合肥远智自动化科技有限公司 | A kind of quick detection control method for differential leak detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20130510 |