CN201449305U - Leakage-proof device of automobile fuel pressure tester - Google Patents
Leakage-proof device of automobile fuel pressure tester Download PDFInfo
- Publication number
- CN201449305U CN201449305U CN2009200433303U CN200920043330U CN201449305U CN 201449305 U CN201449305 U CN 201449305U CN 2009200433303 U CN2009200433303 U CN 2009200433303U CN 200920043330 U CN200920043330 U CN 200920043330U CN 201449305 U CN201449305 U CN 201449305U
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- CN
- China
- Prior art keywords
- plunger tip
- valve
- gland
- test bar
- reference test
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a leakage-proof device of an automobile fuel pressure tester, which comprises a test rod, a gland, a plunger tip and a valve. An upper sealing ring and a lower sealing ring are arranged on the inner wall of the test rod along the circumferential direction, the upper part of the plunger tip and the gland are connected into a whole body, the lower part of the plunger tip is inserted in the inner cavity of the test rod and the upper sealing ring accommodates the plunger tip; the valve is arranged below the plunger tip and is of a frustum shape, a spring is arranged between the bottom surface of the valve and the bottom surface of the test rod, and the conical surface of the valve is attached to the lower sealing ring by the spring; a through oil conduit is arranged on the inner parts of the gland and the plunger tip, the inlet of the oil conduit is positioned on the side wall at the bottom of the plunger tip, and the outlet of the oil conduit is positioned on the gland; and when the gland is connected with the test rod, the plunger tip moves downward to push the valve, so the conical surface of the valve is separated from the lower sealing ring accommodating the plunger tip, and the oil conduit inlet positioned on the side wall at the bottom of the plunger tip is communicated with a chamber in which the valve is positioned. When the device is used for testing, no fuel leakage can be ensured.
Description
Technical field
The utility model relates to a kind of automobile fuel pressure tester leak-proof device, belongs to the checkout equipment technical field.
Background technology
The automobile fuel pressure tester is to detect the whether testing tool of operate as normal of motor car engine fuel oil supply system, because whole test process is to test in the process of motor car engine operation, if fuel leakage is arranged in the test process, not only influence accuracy of detection, and might damage engine, but even fire hazard.
Current, the automobile fuel pressure tester adopts is usually measuring the method that interface is provided with valve, and its structural volume is big, cost is high, troublesome poeration.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, and a kind of automobile fuel pressure tester leak-proof device is provided.
The purpose of this utility model is achieved through the following technical solutions:
Automobile fuel pressure tester leak-proof device, characteristics are: comprise reference test bar, gland, plunger tip and valve, described reference test bar is a cylinder-like structure, inwall edge at reference test bar circumferentially is provided with the two seals circle, promptly go up O-ring seal and lower seal, the top and the gland of described plunger tip are connected in one, and insert in the inner chamber of reference test bar the bottom of plunger tip, and last O-ring seal contains plunger tip; Valve is set below plunger tip, and described valve is frustum, and a spring is installed between the bottom surface of the bottom surface of valve and reference test bar, by spring the conical surface of valve and lower seal is fitted; In addition, in the inside of gland and plunger tip the oil duct that connects is set, the import of oil duct is positioned on the sidewall of plunger tip bottom, and the outlet of oil duct is positioned on the gland; When described gland was connected with reference test bar, plunger tip moved down the promotion valve, and the conical surface of valve and lower seal are separated, and lower seal contains plunger tip, and the oil duct import that is positioned on the sidewall of plunger tip bottom is connected with the residing chamber of valve.
Further, above-mentioned automobile fuel pressure tester leak-proof device, wherein, the excircle at described reference test bar top is provided with external thread, and described gland is provided with internal thread, and described internal thread and external thread match.
Further, above-mentioned automobile fuel pressure tester leak-proof device, wherein, the excircle of described reference test bar bottom is provided with taper thread.
The substantive distinguishing features of technical solutions of the utility model and progressive being mainly reflected in:
Unique, the novel structure of this device design can prevent under high pressure that vehicle fuel from leaking, and the tensimeter loading and unloading is very convenient; Whole apparatus structure is simple, and cost is low, and is economical and practical.
Description of drawings
Below in conjunction with accompanying drawing technical solutions of the utility model are described further:
Fig. 1: structural representation of the present utility model.
The implication of each Reference numeral sees the following form among the figure:
| Reference numeral | Implication | Reference numeral | Implication | | Implication | |
| 1 | |
2 | |
3 | Last O- |
|
| 4 | |
5 | |
6 | Valve | |
| 7 | Spring |
Embodiment
At the characteristics of automobile fuel pressure test, design a kind of device that under high pressure prevents the vehicle fuel leakage, by segmented seal and in order mode such as sealing realize having good anti-leak function.
As shown in Figure 1, automobile fuel pressure tester leak-proof device, mainly comprise reference test bar 1, gland 2, plunger tip 5 and valve 6, reference test bar 1 is a cylinder-like structure, inwall edge at reference test bar 1 circumferentially is provided with the two seals circle, promptly goes up O-ring seal 3 and lower seal 4, and the top of described plunger tip 5 and gland 2 are connected in one, insert in the inner chamber of reference test bar the bottom of plunger tip 5, and last O-ring seal 3 contains plunger tip 5; Valve 6 is set below plunger tip 5, and valve 6 is frustum, and a spring 7 is installed between the bottom surface of the bottom surface of valve 6 and reference test bar 1, by spring 7 conical surface of valve 6 and lower seal 4 is fitted; In addition, in the inside of gland 2 and plunger tip 5 oil duct that connects is set, the import of oil duct is positioned on the sidewall of plunger tip 5 bottoms, and the outlet of oil duct is positioned on the gland 2; Gland 2 is provided with internal thread, the excircle at reference test bar 1 top is provided with external thread, internal thread and external thread match, when gland 2 is threaded onto on the reference test bar 1, be gland 2 when being threaded with reference test bar 1, plunger tip 5 moves down and promotes valve 6, and the conical surface of valve 6 and lower seal 4 are separated, lower seal 4 contains plunger tip 5, and the oil duct import that is positioned on the plunger tip 5 bottom sidewalls is connected with valve 6 residing chambers.In addition, the excircle of reference test bar 1 bottom is provided with taper thread.
During concrete the application, this device is installed on the motor car engine by the taper thread of reference test bar 1 bottom excircle, and gland 2 oils and exports B and be connected with tensimeter by flexible pipe.When measuring, gland 2 is screwed on the reference test bar 1, plunger tip 5 seals with last O-ring seal 3 earlier, plunger tip 5 continues descending promotion valve 6 then, plunger tip 5 is slowly opened valve 6, and plunger tip 5 enters lower seal 4, and the oil duct import on the plunger tip 5 bottom sidewalls is connected with valve 6 residing chambers; And the fuel oil of motor car engine enters the valve 6 residing chambers from the hydraulic fluid port A of reference test bar 1 bottom surface, the oil duct import of fuel oil from plunger tip 5 bottom sidewalls entered the oil duct that plunger tip 5 and gland 2 inside connect, oil outlet B through the through tensimeter of flexible pipe from gland 2 at last, tensimeter obtains pressure, and pressure is detected.After test finishes, unscrew gland 2, plunger tip 5 withdraws from lower seal 4, and valve 6 and then enters lower seal 4, and fuel oil is closed.
In sum, the utility model modern design has good anti-leak function in Test Application, effectively prevent fuel leakage when tensimeter is mounted or unloads, and the tensimeter loading and unloading are very convenient; Whole apparatus structure is simple, and cost is low, and is economical and practical.
More than, content of the present utility model has been done further detailed description by embodiment by the accompanying drawing illustrated embodiment.But this should be interpreted as that the scope of the utility model theme only limits to above example.Under the situation that does not break away from the above-mentioned technological thought of the utility model, various replacements or the change of making according to ordinary skill knowledge and customary means, all should be included in the protection domain of the present utility model.
Claims (3)
1. automobile fuel pressure tester leak-proof device, it is characterized in that: comprise reference test bar (1), gland (2), plunger tip (5) and valve (6), described reference test bar (1) is a cylinder-like structure, inwall edge at reference test bar (1) circumferentially is provided with the two seals circle, promptly go up O-ring seal (3) and lower seal (4), the top of described plunger tip (5) and gland (2) are connected in one, and insert in the inner chamber of reference test bar the bottom of plunger tip (5), and last O-ring seal (3) contains plunger tip (5); In the below of plunger tip (5) valve (6) is set, described valve (6) is frustum, and a spring (7) is installed between the bottom surface of the bottom surface of valve (6) and reference test bar (1), by spring (7) conical surface of valve (6) and lower seal (4) is fitted; In addition, in the inside of gland (2) and plunger tip (5) oil duct that connects is set, the import of oil duct is positioned on the sidewall of plunger tip (5) bottom, and the outlet of oil duct is positioned on the gland (2); Described gland (2) and reference test bar (1) are when being connected, plunger tip (5) moves down and promotes valve (6), the conical surface and the lower seal (4) of valve (6) are separated, lower seal (4) contains plunger tip (5), and the oil duct import that is positioned on the sidewall of plunger tip (5) bottom is connected with the residing chamber of valve (6).
2. automobile fuel pressure tester leak-proof device according to claim 1 is characterized in that: the excircle at described reference test bar (1) top is provided with external thread, and described gland (2) is provided with internal thread, and described internal thread and external thread match.
3. automobile fuel pressure tester leak-proof device according to claim 1 is characterized in that: the excircle of described reference test bar (1) bottom is provided with taper thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200433303U CN201449305U (en) | 2009-07-10 | 2009-07-10 | Leakage-proof device of automobile fuel pressure tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200433303U CN201449305U (en) | 2009-07-10 | 2009-07-10 | Leakage-proof device of automobile fuel pressure tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201449305U true CN201449305U (en) | 2010-05-05 |
Family
ID=42554026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200433303U Expired - Fee Related CN201449305U (en) | 2009-07-10 | 2009-07-10 | Leakage-proof device of automobile fuel pressure tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201449305U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994852A (en) * | 2013-12-06 | 2014-08-20 | 沪东重机有限公司 | Leak-proof device for pressure instrument |
| CN105784282A (en) * | 2015-12-07 | 2016-07-20 | 西安航空动力控制科技有限公司 | Fuel accessory component oil leakage volume testing apparatus |
-
2009
- 2009-07-10 CN CN2009200433303U patent/CN201449305U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994852A (en) * | 2013-12-06 | 2014-08-20 | 沪东重机有限公司 | Leak-proof device for pressure instrument |
| CN105784282A (en) * | 2015-12-07 | 2016-07-20 | 西安航空动力控制科技有限公司 | Fuel accessory component oil leakage volume testing apparatus |
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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: 20100505 Termination date: 20120710 |