CN212273412U - A connect seal assembly for high pressure oil rail helium seals test - Google Patents
A connect seal assembly for high pressure oil rail helium seals test Download PDFInfo
- Publication number
- CN212273412U CN212273412U CN202022186843.9U CN202022186843U CN212273412U CN 212273412 U CN212273412 U CN 212273412U CN 202022186843 U CN202022186843 U CN 202022186843U CN 212273412 U CN212273412 U CN 212273412U
- Authority
- CN
- China
- Prior art keywords
- pressure
- joint
- sealing
- airtight
- helium
- 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.)
- Active
Links
Images
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a connect seal assembly for high pressure oil rail helium seals test, including the pressure measurement end joint, be equipped with the air vent in the middle of the pressure measurement end joint, the pressure measurement end joint be equipped with in its outside centre with the communicating mounting hole of air vent, be equipped with the airtight end cap sealed with it in the mounting hole, airtight end cap is big end face structure, and its inside end face is the plain end face, airtight end cap's medial surface with the outside end face of pressure measurement end joint is sealed mutually. The utility model discloses a change the structure of airtight end cap, set up it into big head end face structure, will be original in the mounting hole bottom as sealed face, change into the inboard terminal surface with airtight end cap and the outside terminal surface of pressure measurement end connector as sealed face, draw the outside end of pressure measurement end connector with the effort, just so avoid too high pressure to adopt the pressure measurement end connector that the softer material made to suffer destruction of the conical surface of bottom in the mounting hole.
Description
Technical Field
The utility model relates to a high pressure oil rail technical field, concretely relates to connect seal assembly for high pressure oil rail helium seals test.
Background
The high-pressure oil rail is used for storing fuel oil, and simultaneously, pressure fluctuation generated by oil supply of the high-pressure pump and oil injection of the oil injector is restrained, so that the pressure stability of the system is ensured. In the use process of the high-pressure oil rail, a pressure measuring end connector needs to be screwed into one end of the high-pressure oil rail for installing a pressure measuring sensor and ensuring the sealing performance of the high-pressure oil rail in use.
In order to meet the national emission requirement of fuel automobiles, the working pressure of an engine fuel system is increased to 350bar from 250bar, and if the helium sealing test scheme of an oil rail is in accordance with the sealing scheme of the prior pure stainless steel material oil rail (as shown in figure 1), the sealing surface for installing a pressure sensor in a pressure measuring end joint is damaged, so that oil leakage is caused.
The original oil rail with the working pressure of 250bar is made of stainless steel materials, the stainless steel materials are hard and have good strength, 4 nozzle holes and oil inlet joints are sealed, and a pressure measuring joint can be directly sealed on a conical sealing surface. The 350bar oil rail is manufactured by forging blanks through machining, belongs to an oil rail with an integral structure, only one part of a pressure measuring end connector needs to be assembled, the 350bar pressure measuring end connector is made of alloy copper and is made of a material softer than stainless steel, the working pressure is increased from 250bar to 350bar, and the pressure born by the same sealing surface is 40% higher than that born by the same sealing surface in a sealing test. If the sealing conical surface of the copper joint is also used as the sealing surface for the helium test, the sealing conical surface can be damaged when 350bar pressure acts on the sealing conical surface of the copper joint, and the high-pressure sensor cannot be sealed when being installed in use, so that leakage is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a connect seal assembly for high pressure oil rail helium seals test in order to solve above-mentioned problem, adopts the airtight end cap of big head end face, and airtight end cap seals in the pressure measurement end joint outside, regards the medial surface of airtight end cap and the outside end face of pressure measurement end joint as sealed face, avoids too high pressure to suffer destruction to the pressure measurement end joint that adopts softer material to make in the mounting hole bottom sealing conical surface.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a connect seal assembly for high-pressure oil rail helium seals test installs at high-pressure oil rail tip, includes the pressure measurement end joint, pressure measurement end joint seal installation in the one end of high-pressure oil rail, be equipped with the air vent in the middle of the pressure measurement end joint, the pressure measurement end joint outside the centre be equipped with the communicating mounting hole of air vent, be equipped with in the mounting hole with its sealed airtight end cap, airtight end cap is big end face structure, and its inboard terminal surface is the plain end face, airtight end cap's medial surface with the outside terminal surface of pressure measurement end joint is sealed mutually.
The utility model discloses a change the structure of airtight end cap, set up it into big head end face structure, will be original in the mounting hole bottom as sealed face, change into the inboard terminal surface with airtight end cap and the outside terminal surface of pressure measurement end connector as sealed face, draw the outside end of pressure measurement end connector with the effort, just so avoid too high pressure to adopt the pressure measurement end connector that the softer material made to suffer destruction of the conical surface of bottom in the mounting hole.
According to a preferable technical scheme, the airtight plug comprises a thick external plug body and a thin connecting section, and the airtight plug is installed in the installation hole of the pressure measuring end connector through the connecting section.
Preferably, the connecting section is screwed in the mounting hole through threads, and the length of the connecting section is shorter than the depth of the mounting hole in the pressure measuring end joint.
As the optimized technical scheme, a sealing ring is arranged between the airtight plug and the pressure measuring end connector, and the sealing ring can be a large-diameter sealing ring due to the large area of a large head plane at the inner side end of the airtight plug, bears the same sealing pressure and is not easy to deform under stress. In addition, the design has a large testing range, and can also be tested for the leakage between the large plane of the copper joint and the thread.
According to the preferable technical scheme, a sealing ring installation groove is formed in the joint of the inner end face of the outer plug body and the connecting section of the airtight plug, and the sealing ring is installed in the sealing ring installation groove.
As a preferable technical scheme, the size of the external plug body of the airtight plug is equivalent to that of the pressure measuring end connector.
As a preferred technical scheme, the pressure measuring end joint is made of alloy copper or copper materials.
As a preferable technical scheme, the pressure measuring end joint is screwed in the pressure measuring cavity through threads.
As a preferred technical scheme, the bottom of the mounting hole of the pressure measuring end joint is a conical surface and is used for mounting a pressure measuring sensor when in use.
The utility model discloses airtight end cap is big end face structure, its inboard terminal surface is the plain end face, airtight end cap passes through the mounting hole and installs on pressure measurement end connector, and regard as sealed terminal surface with airtight end cap's medial surface and pressure measurement end connector's outside terminal surface, and set up between the two and be used for sealed sealing washer, and originally in the mounting hole bottom conical surface as sealed face department no longer sealed, and then when high-pressure test, draw the outside end of pressure measurement end connector with the effort, avoid the too high pressure to adopt the pressure measurement end connector that the softer material made in the mounting hole the destruction of the conical surface of bottom, the conical surface that will use when effectively having protected assembly pressure sensor.
Compared with the prior art, the utility model has the advantages of it is following:
1. the application range is wider: the design can be used for the sealing test of the high-pressure oil rail which is higher in pressure and softer in material;
2. the operability is strong: because the large head plane has large area, the sealing ring can be a large-diameter sealing ring, bears the same sealing pressure, and is not easy to deform under stress;
3. the design test range is large, and the leakage between the large plane of the copper joint and the thread can be tested.
Drawings
FIG. 1 is a schematic structural view of a conventional oil rail seal test connection seal assembly;
FIG. 2 is a schematic view of the connecting seal assembly of the present invention installed on an oil rail;
FIG. 3 is a schematic structural view of the connecting and sealing assembly of the present invention;
fig. 4 is a schematic structural view of the airtight plug of the present invention.
In the figure: 1-pressure measuring end joint; 101-a vent hole; 102-mounting holes; 2-airtight plug; 3-an oil rail; 4-sealing ring; 5-sealing the conical surface; 2' -existing airtight plugs.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Examples
The existing oil rail helium sealing test scheme is shown in figure 1, a conical airtight plug 2' is adopted to be installed in a pressure measuring end connector 1 on an oil rail 3, the test pressure is 250bar, the material is stainless steel, the stainless steel is hard, the strength is good, 4 nozzle holes and an oil inlet connector are sealed, and the pressure measuring connector can be directly a sealing surface on a drawing. However, for the 350bar oil rail, the forged blank is manufactured by machining, only one part of the pressure measuring terminal joint needs to be assembled, the 350bar pressure measuring terminal joint is made of copper alloy and is softer than stainless steel, the working pressure is increased from 250bar to 350bar, and the pressure born by the same sealing surface during sealing test is 40% higher than that of the prior sealing surface. If the sealing conical surface of the copper joint is used as a sealing surface for the helium test, the sealing conical surface can be damaged when 350bar pressure acts on the sealing conical surface of the copper joint, and the high-pressure sensor cannot be sealed when being installed in use, so that gasoline leakage is caused.
In order to solve the problem, the utility model provides a connect seal assembly for high pressure oil rail helium seals test.
As shown in fig. 3, the pressure measuring device is installed in a pressure measuring cavity at the end of a high-pressure oil rail 3, as shown in the left end of fig. 2, the pressure measuring device comprises a pressure measuring end connector 1 and an airtight plug 2, the pressure measuring end connector 1 is screwed and sealed in the pressure measuring cavity of the high-pressure oil rail 3 through threads, an air vent 101 is arranged in the middle of the pressure measuring end connector 1, an installation hole 102 communicated with the air vent 101 is formed in the middle of the outer portion of the pressure measuring end connector 1, when the pressure measuring device is used, the installation hole 102 is used for installing a pressure measuring sensor, and a sealing conical surface 5 is.
When the airtightness test is performed, the airtight plug 2 is installed in the installation hole 102, as shown in fig. 4, the airtight plug 2 includes a thick external plug body and a thin connection section, the airtight plug 2 is screwed into the installation hole 102 of the pressure measuring end connector 1 through the connection section, both end faces of the external plug body and the internal plug body are flat end faces, the length of the connection section is shorter than the depth of the installation hole 102, and the sealing conical surface 5 is ensured to be a cavity.
In addition, the size of the external plug body of the airtight plug 2 is equivalent to that of the pressure measuring end joint 1, and the pressure measuring end joint 1 is made of alloy copper or copper materials. In order to increase the sealing effect, be equipped with sealing washer 4 between airtight end cap 2 and the pressure measurement end connector 1, airtight end cap 2 is equipped with sealing washer 4 mounting groove in the junction of the inside terminal surface of outside end cap body and linkage segment, and sealing washer 4 is installed in sealing washer 4 mounting groove. Because the area of the large-end plane of the airtight plug 2 is large, the sealing ring 4 can be a large-diameter sealing ring 4, the same sealing pressure is borne, and the airtight plug is stressed and not easy to deform. In addition, the design has a large testing range, and can also be tested for the leakage between the large plane of the copper joint and the thread. The utility model discloses airtight end cap 2 is big end face structure, its inboard terminal surface is the plain end face, airtight end cap 2 passes through mounting hole 102 in-mounting in pressure measurement end connector 1, and regard as sealed terminal surface with airtight end cap 2's inboard terminal surface and pressure measurement end connector 1's outside terminal surface, and set up between the two and be used for sealed sealing washer 4, and originally in the mounting hole bottom conical surface as sealed face department no longer sealed, and then when high-pressure test, draw the outside end of pressure measurement end connector with the effort, avoid the too high pressure to adopt the destruction of the pressure measurement end connector bottom conical surface in the mounting hole that the softer material made, sealed conical surface 5 that will use when having effectively protected assembly pressure sensor.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.
Claims (9)
1. A connecting and sealing assembly for a helium sealing test of a high-pressure oil rail is arranged at the end part of the high-pressure oil rail and comprises a pressure measuring end joint, wherein the pressure measuring end joint is arranged at one end of the high-pressure oil rail in a sealing way, a vent hole is arranged in the middle of the pressure measuring end joint, and a mounting hole communicated with the vent hole is arranged in the middle of the outer part of the pressure measuring end joint,
an airtight plug for sealing the installation hole is arranged in the installation hole, the airtight plug is of a large-head end face structure, the inner end face of the airtight plug is a flat end face, and the inner end face of the airtight plug is sealed with the outer end face of the pressure measuring end joint.
2. The joint seal assembly for the high pressure oil rail helium sealing test of claim 1, wherein the airtight bulkhead comprises a thick outer bulkhead body and a thin connecting section, and the airtight bulkhead is installed in the installation hole of the pressure measuring end connector through the connecting section.
3. The joint seal assembly for a high pressure rail helium seal test of claim 2, wherein the connecting section is threaded into the mounting hole, the connecting section having a length shorter than the depth of the mounting hole in the pressure tap fitting.
4. The connecting and sealing assembly for the high-pressure oil rail helium sealing test as claimed in claim 2, wherein a sealing ring is arranged between the airtight plug and the pressure measuring end connector.
5. The joint sealing assembly for the helium sealing test of the high-pressure oil rail according to claim 4, wherein the airtight plug is provided with a sealing ring installation groove at the joint of the inner end surface of the outer plug body and the connecting section, and the sealing ring is installed in the sealing ring installation groove.
6. The joint seal assembly for the high pressure rail helium seal test of claim 4, wherein the size of the plug body outside the hermetic plug is comparable to the size of the pressure end fitting.
7. The joint seal assembly for the high pressure oil rail helium seal test of claim 1, wherein the pressure measurement end fitting is a pressure measurement end fitting made of copper alloy or copper material.
8. The joint seal assembly for high pressure rail helium seal testing of claim 1, wherein the pressure tap is threaded into the pressure chamber.
9. The joint seal assembly for a high pressure fuel rail helium seal test of claim 1, wherein the bottom of the mounting hole of the pressure measuring end fitting is tapered for mounting a pressure measuring sensor during use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022186843.9U CN212273412U (en) | 2020-09-29 | 2020-09-29 | A connect seal assembly for high pressure oil rail helium seals test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022186843.9U CN212273412U (en) | 2020-09-29 | 2020-09-29 | A connect seal assembly for high pressure oil rail helium seals test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212273412U true CN212273412U (en) | 2021-01-01 |
Family
ID=73871217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022186843.9U Active CN212273412U (en) | 2020-09-29 | 2020-09-29 | A connect seal assembly for high pressure oil rail helium seals test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212273412U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178349A (en) * | 2020-09-29 | 2021-01-05 | 上海众源燃油分配器制造有限公司 | A connect seal assembly for high pressure oil rail helium seals test |
-
2020
- 2020-09-29 CN CN202022186843.9U patent/CN212273412U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178349A (en) * | 2020-09-29 | 2021-01-05 | 上海众源燃油分配器制造有限公司 | A connect seal assembly for high pressure oil rail helium seals test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212273412U (en) | A connect seal assembly for high pressure oil rail helium seals test | |
| CN112178349A (en) | A connect seal assembly for high pressure oil rail helium seals test | |
| CN214037817U (en) | Gas cylinder and sealing structure thereof | |
| CN211203250U (en) | Porous centralized reducing joint for novel air reservoir | |
| CN212718487U (en) | With stop valve complex joint and idle call test system | |
| CN112963279A (en) | Cylinder penetrating sealing structure of oil injector | |
| CN215333736U (en) | Side trailer cylinder | |
| CN217030361U (en) | High-pressure oil pipe assembly with compensation function | |
| CN215861058U (en) | High-reliability integrated three-way pressure measuring connector | |
| CN215722525U (en) | Joint structure for high-pressure hydrogen storage container | |
| CN111649905A (en) | Protection device of vacuum bellows | |
| CN215479413U (en) | Pressure relief device of jack | |
| CN112746923B (en) | Split type side oil inlet oil sprayer oil inlet device and side oil inlet oil sprayer oil inlet system | |
| CN220319490U (en) | Drilling rod joint for oil and gas well | |
| CN215334965U (en) | Anti-seismic joint suitable for high-pressure gas | |
| CN216841947U (en) | Engine body | |
| CN213746104U (en) | Cylinder valve assembly for gas cylinder and gas cylinder | |
| CN214741788U (en) | Cylinder penetrating sealing structure of oil injector | |
| CN211951034U (en) | Hydraulic cylinder with valve | |
| CN215371534U (en) | Silencer component with high sealing performance | |
| CN218627392U (en) | Air conditioner refrigerant filling assembly | |
| CN216746596U (en) | Gas cylinder connector sealing tool for assisting gas cylinder test | |
| CN213088571U (en) | Oil inlet joint sealing structure of clutch booster | |
| CN220727208U (en) | Combined check valve for hydrogenation station | |
| CN212690018U (en) | Multi-core air tap pressure bearing disc |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |