CN101458149B - Automobile fuel sealing expedite test device - Google Patents
Automobile fuel sealing expedite test device Download PDFInfo
- Publication number
- CN101458149B CN101458149B CN2008102461011A CN200810246101A CN101458149B CN 101458149 B CN101458149 B CN 101458149B CN 2008102461011 A CN2008102461011 A CN 2008102461011A CN 200810246101 A CN200810246101 A CN 200810246101A CN 101458149 B CN101458149 B CN 101458149B
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- China
- Prior art keywords
- cylinder body
- piston
- end cover
- spring
- proving installation
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- Expired - Fee Related
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 239000000446 fuel Substances 0.000 title claims abstract description 8
- 238000007789 sealing Methods 0.000 title claims description 14
- 238000009434 installation Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to a device for testing the smoothness of an automobile fuel seal. The inner part of the cylinder body of the testing device is provided with a piston matching the inner wall of the cylinder body; one end of the rod body of a plug rod is fixedly connected with the piston, while the other end passes through the lower end cover of the cylinder body, and the end part is provided with a rod head; the rod body exposing at the outside of the cylinder body is provided with a seal component which is mutually sealed with a carbon cylinder month; a spring is arranged between the upper end cover of the cylinder body and the piston; the piston is moved downwards by the elastic force of the spring; a gas inlet pipe passes through the pipe hole of the upper end cover to be connected with a through hole arranged on the piston. In the technical proposal, the device is provided with the spring, therefore, when in smoothness test, the plug can be loosen timely by the resilience force of the spring, thus avoiding the situation that whether the operation is successful or not, the test is determined by the timeliness of the action of a person. Therefore, the invention has the advantages that the operation is convenient, the test result is precise, and the one-time percent of pass and the precision of the measure are improved.
Description
Technical field
The present invention relates to a kind of proving installation of automobile fuel sealing expedite.
Background technology
At present, along with the raising of rapid development of economy and people's living standard, automobile progressively enters into family becomes a kind of walking-replacing tool, and this seems particularly important with regard to the security that causes automobile.In China, the sealing expedite of vehicle fuel system all must be tested according to the standard of GB18352.2-2005 F7 conformity of production inspection.In sealing test, plug need be blocked the canister mouth, in unimpeded test, plug must unclamp and make canister directly to lead to atmosphere, and now plugs that adopt are the pneumostop plug more, and this just makes after finishing sealing test, be subjected to the gases affect in the cylinder body, plug usually unclamps untimely, must lean on manually and in time pull up, otherwise that unimpeded test is considered as is defective.This shows that this structure need rely on the employee to operate and control whole process, not only inconvenience but also test result are also accurate inadequately.
Summary of the invention
Purpose of the present invention just provides a kind of easy to operate, test result accurately and vehicle fuel proving installation that can the disposable test success.
For achieving the above object, the present invention has adopted following technical scheme: cylinder interior is provided with the piston that cooperates with inboard wall of cylinder block, shaft one end and the piston of plug bar are connected, bottom end cover and end that the other end passes cylinder body are provided with a bar head, be emerging in the outer shaft of cylinder body and be provided with the seal assembly that seals mutually with the canister mouth, be provided with spring between the upper end cover of cylinder body and the piston, the elastic force of spring moves downward piston, and the through hole that is provided with on the pore that draft tube is passed upper end cover and the piston links to each other.
As shown from the above technical solution, the present invention is when doing sealing test, and draft tube air feed, gas enter the space of piston bottom, and the piston retraction drives the interlock of plug bar, makes seal assembly produce distortion, thereby reaches the effect of sealing; When doing unimpeded test, draft tube is died, and at this moment spring force makes the piston return, and seal assembly recovers original state, forms unimpeded test.Like this, avoided the canister plug to unclamp the situation of untimely needs by manually in time pulling up, whole test process is easy to operate, and the result is accurate and can disposablely finish test.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the upward view of Fig. 1;
The synoptic diagram that Fig. 3 combines with canister for the present invention;
Fig. 4, Fig. 5 are the present invention's two kinds of embodiment synoptic diagram in addition.
Embodiment
Below in conjunction with accompanying drawing present embodiment is described further:
As shown in Figure 1, cylinder body 10 is formed by connecting with bolt by cylinder body 10A and cylinder body 10B, and the inside of cylinder body 10 is provided with the piston 20 that matches with inboard wall of cylinder block, and piston 20 is divided into the A chamber of top and the B chamber of below with cylinder body.One end of plug bar 50 shafts and piston 20 usefulness bolts are connected, bottom end cover and end that the other end passes cylinder body 10 are provided with a bar head, be emerging in cylinder body 10 outer rod bodies and be arranged with the seal assembly that seals mutually with the canister mouth, the sealing assembly is made up of one group of support set 51 and seal stack circle 52, support set 51 and O-ring seal 52 alternative arrangement, and the gap is left in the centre, adopts the use that matches of support set 51 and O-ring seal 52, is in order to make O-ring seal 52 even more ideal on sealing effectiveness.(i.e. Shang Fang A chamber) is provided with spring 30 between the upper end cover of cylinder body 10 and the piston 20, upper end cover and piston 20 are provided with boss 14 and boss 22 respectively in opposite directions in order to fixing spring 30 along the axle center, the elastic force of spring 30 moves downward piston 20, on the upper end cover of cylinder body 10, be provided with simultaneously pore 12, piston is provided with through hole 21, and draft tube 40 links to each other with through hole 21 through the A space by pore.Piston 20 adopts O-ring seal 60 to seal with inboard wall of cylinder block, and cylinder cap adopts O-ring seal 70 to seal under plug bar and the cylinder body.On the cylinder body bottom end cover, with plug bar 50 is central point, be arranged with four boss 15 downwards around the plug bar, as shown in Figure 2, the plug bar cross section of dropping contacted with canister 80 when boss 15 can prevent unimpeded test, caused unimpeded not freely, and boss 15 is provided with two at least, present embodiment is selected to be provided with four, and its stability in contact is stronger.
Specific implementation method is as follows:
When doing the sealing test of fuel oil, draft tube 40 air inlets, gas enters the B chamber through the through hole 21 on the piston 20, at this moment the power upwards that produces makes piston 20 prop up spring 30 and moves upward, drive 50 interlocks of plug bar simultaneously, at this moment expose O-ring seal 52 on the shaft outside cylinder body 10 and be squeezed and produce distortion, reach a kind of effect of sealing with canister 80.When unimpeded test subsequently, draft tube 40 stops air inlet, and the gas in the B chamber sheds, and at this moment the screen resilience of spring 30 makes piston 20 move downward, and makes the piston return, and at this moment also return thereupon of O-ring seal 52 makes that canister mouth and atmosphere are unimpeded.
As shown in Figure 4, cylinder body 10 can adopt the technology of disposable injection molded directly to process, and also the structure that can adopt two cylinder bodies to be connected realizes.The structure that present embodiment adopts two cylinder bodies to be connected is directly to improve on existing cylinder body for convenience, reduces cost, and cylinder body also can adopt the structure that ring flange is set shown in Figure 5, the technology relative complex of the texture ratio present embodiment of this ring flange.
No matter which kind of job operation cylinder body 10 adopts, and all will guarantee its basic structure, and the upper and lower at piston 20 respectively constitutes a chamber portion in other words, and spring is placed to guarantee that piston 20 is in the next under the elastic force effect in the A chamber on top; When the B of bottom interacvity air-filling, the elastic force that piston 20 will the overcome spring fast moving that makes progress.
Aforesaid automobile fuel sealing expedite test device has increased spring assembly, makes when doing unimpeded test, plug can be by the screen resilience of spring, in time unclamp, avoided no matter the test success or not situation that all will lean on the promptness of human action to decide.On the bottom end cover of cylinder body, increased by four boss, can avoid plug to drop and contact, guaranteed the unobstructed property of unimpeded test with canister.In sum, the present invention is simple in structure, and cost is lower, and is easy to operate, and improved the accuracy of disposable qualification rate and measurement, saved productive temp greatly.
Claims (7)
1. automobile fuel sealing expedite test device, it is characterized in that: cylinder body (10) inside is provided with the piston (20) that cooperates with inboard wall of cylinder block, shaft one end and the piston (20) of plug bar (50) are connected, bottom end cover and end that the other end passes cylinder body (10) are provided with a bar head, be emerging in the outer shaft of cylinder body (10) and be provided with the seal assembly that seals mutually with the canister mouth, be provided with spring (30) between the upper end cover of cylinder body (10) and the piston (20), the elastic force of spring (30) moves downward piston (20), and the pore (12) that draft tube (40) is passed upper end cover links to each other with the through hole (21) that piston (20) is gone up setting.
2. proving installation according to claim 1 is characterized in that: cylinder body (10) upper end cover and piston (20) are provided with boss respectively in opposite directions, and spring (30) cooperates fixing with two boss.
3. proving installation according to claim 1 is characterized in that: the outside surface of the bottom end cover of cylinder body (10) is arranged with two boss (15) downwards at least.
4. proving installation according to claim 1 is characterized in that: described seal assembly is made up of the one group of support set (51) and the seal stack circle (52) that are provided with around shaft, support set (51) and O-ring seal (52) alternative arrangement, and the gap is left in the centre.
5. proving installation according to claim 4 is characterized in that: cylinder body (10) bottom end cover is that the center is arranged with four boss (15) with plug bar (50).
6. according to the described proving installation of arbitrary claim in the claim 1 to 5, it is characterized in that: cylinder body (10) adopts the technology of once injection moulding.
7. according to the described proving installation of arbitrary claim in the claim 1 to 5, it is characterized in that: cylinder body (10) adopts two structures that cylinder body is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102461011A CN101458149B (en) | 2008-12-22 | 2008-12-22 | Automobile fuel sealing expedite test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102461011A CN101458149B (en) | 2008-12-22 | 2008-12-22 | Automobile fuel sealing expedite test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101458149A CN101458149A (en) | 2009-06-17 |
| CN101458149B true CN101458149B (en) | 2011-09-21 |
Family
ID=40769138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102461011A Expired - Fee Related CN101458149B (en) | 2008-12-22 | 2008-12-22 | Automobile fuel sealing expedite test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101458149B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183346B (en) * | 2010-07-15 | 2015-06-03 | 上海霍富汽车锁具有限公司 | Method for detecting leakage flow of automobile oil tank cover |
| JP5799907B2 (en) * | 2012-07-13 | 2015-10-28 | トヨタ自動車株式会社 | Leak inspection device |
| CN104633115A (en) * | 2015-02-02 | 2015-05-20 | 上海贤日自动化设备有限公司 | Compression expanding type pipe opening inner diameter high-pressure sealing device and method |
| CN108692892A (en) * | 2018-06-28 | 2018-10-23 | 芜湖泰和管业股份有限公司 | A kind of device for detecting airtightness of corrugated tube and detection method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2366843Y (en) * | 1999-04-14 | 2000-03-01 | 扬州奥力威传感器有限公司 | Device for stopping leakage for investigating fluid-tightness |
| CN2417090Y (en) * | 2000-01-12 | 2001-01-31 | 张熙 | Apparatus for detecting leakage |
| CN2460528Y (en) * | 2000-12-22 | 2001-11-21 | 济南钢铁集团总公司 | Pull-rod sealing device of blast furnace top bell |
-
2008
- 2008-12-22 CN CN2008102461011A patent/CN101458149B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2366843Y (en) * | 1999-04-14 | 2000-03-01 | 扬州奥力威传感器有限公司 | Device for stopping leakage for investigating fluid-tightness |
| CN2417090Y (en) * | 2000-01-12 | 2001-01-31 | 张熙 | Apparatus for detecting leakage |
| CN2460528Y (en) * | 2000-12-22 | 2001-11-21 | 济南钢铁集团总公司 | Pull-rod sealing device of blast furnace top bell |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平8-5490A 1996.01.12 |
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| Publication number | Publication date |
|---|---|
| CN101458149A (en) | 2009-06-17 |
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Granted publication date: 20110921 Termination date: 20201222 |
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| CF01 | Termination of patent right due to non-payment of annual fee |