CN111373867B - Composite sealing pipeline connecting piece - Google Patents
Composite sealing pipeline connecting piece Download PDFInfo
- Publication number
- CN111373867B CN111373867B CN200610056108.8A CN200610056108A CN111373867B CN 111373867 B CN111373867 B CN 111373867B CN 200610056108 A CN200610056108 A CN 200610056108A CN 111373867 B CN111373867 B CN 111373867B
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- China
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- ball head
- filler neck
- pipeline connecting
- connecting piece
- revolution
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Abstract
The invention belongs to a pipeline connecting device, and particularly relates to a composite sealing pipeline connecting piece. The ball head sealing device comprises a filler neck, a ball head matched with the filler neck and an outer sleeve nut for connecting the ball head and the filler neck together, wherein a conical surface is processed on the inner side of the filler neck, a large ball head revolution surface SR2, a small ball head revolution surface SR1 and an O-shaped sealing ring are arranged at the contact position of the ball head and the filler neck, and when the ball head and the filler neck are connected together through the outer sleeve nut, the ball head and the filler neck are extruded to form two metal seals of two ball head revolution surfaces and a non-metal seal of an O-shaped ring. The invention has the obvious advantage of good sealing performance.
Description
Technical Field
The invention belongs to a pipeline connecting device, and particularly relates to a sealing pipeline connecting piece.
Background
In the existing rocket type pipeline system in China, a 60-degree pipeline connecting piece is mainly adopted for small conduit connection, and the sealing form is single-channel sealing formed by metal surface extrusion. Under the condition that the assembly alignment of the ball head and the filler neck of the connecting piece is poor, the annular stress at the bell mouth parts of the ball head and the filler neck is uneven, and the sealing performance is poor; the secondary assembly performance of the connecting piece is poor, and air leakage is easily caused; in addition, the air leakage is easily caused under the conditions that the surface processing quality of the contact surface of the ball head and the filler neck is unqualified, the ball head is scratched or the precision is too low.
Disclosure of Invention
The invention aims to provide a composite sealing pipeline connecting piece with good sealing performance aiming at the defects of the prior art.
The invention is realized by the following steps: the utility model provides a compound sealing pipeline connecting piece, including the filler neck, the bulb that matches with the filler neck to and the outer sleeve nut that links together bulb and filler neck, the inboard processing of filler neck has the conical surface, wherein, the department of contact mutually with the filler neck on the bulb is processed and is had big bulb surface of revolution SR2 and little bulb surface of revolution SR1, big bulb surface of revolution SR2 and little bulb surface of revolution SR1 all seal with the filler neck, be equipped with an O type sealing washer between two bulb surfaces of revolution.
In the invention, a large ball head revolution surface SR2, a small ball head revolution surface SR1 and an O-shaped sealing ring are arranged at the contact part of the ball head and the filler neck, and when the ball head and the filler neck are connected together by the outer sleeve nut, the ball head and the filler neck are extruded to form two metal seals of two ball head revolution surfaces and a non-metal seal of an O-shaped ring. Therefore, the invention has the obvious advantage of good sealing performance.
Drawings
FIG. 1 is a view of the structure of a composite sealing pipe joint
1-a filler neck; 2-a nut is sleeved; 3-a ball head; 4-O-shaped sealing ring
Detailed Description
The utility model provides a compound sealing pipeline connecting piece, including filler neck 1, bulb 3 with filler neck 1 matches, and the housing nut 2 that links together bulb 3 and filler neck 1, the inboard processing at filler neck 1 has the conical surface, wherein, there are big bulb surface of revolution SR2 and little bulb surface of revolution SR1 with filler neck 1 department of contact on bulb 3, big bulb surface of revolution SR2 and little bulb surface of revolution SR1 are all sealed with filler neck 1, be equipped with an O type sealing washer 4 between two bulb surfaces of revolution.
The filler neck 1 can adopt a cone angle structure of 15-30 degrees, and the filler neck in the embodiment adopts a cone angle of 24 degrees. The outer nut 2 is sleeved into the ball head 3 and screwed with the filler neck 1, and extrudes the ball head 3 and the filler neck 1 to form two metal seals of two ball head revolution surfaces and a non-metal seal of an O-shaped sealing ring 4. The filler neck 1 and the bulb 3 are respectively welded with two guide pipes, and the guide pipes are connected with the guide pipes through a composite sealing pipeline connecting piece.
The ball head 3, the filler neck 1 and the outer sleeve nut 2 of the composite sealing pipeline connecting piece are all made of stainless steel, the drift diameter is 4mm, the size of the O-shaped sealing ring 4 is 6 × 1.5.5 mm, a silicon rubber material is adopted, the composite sealing pipeline connecting piece is used in an environment with the working pressure of 10MPa and the temperature of-30-350 ℃, and the leakage rate is less than 10-5Pa m3/s。
Claims (3)
1. The utility model provides a compound sealing pipeline connecting piece, includes filler neck (1), bulb (3) that matches with filler neck (1) to and with bulb (3) and outer sleeve nut (2) that filler neck (1) link together, the inboard processing of filler neck (1) has conical surface, its characterized in that: a large ball head revolution surface SR2 and a small ball head revolution surface SR1 are arranged at the contact position of the ball head (3) and the filler neck (1), the large ball head revolution surface SR2 and the small ball head revolution surface SR1 are both sealed with the filler neck (1), and an O-shaped sealing ring (4) is arranged between the two ball head revolution surfaces.
2. A composite sealed conduit coupling according to claim 1, wherein: the O-shaped sealing ring is made of silicon rubber.
3. A composite sealed conduit coupling according to claim 1 or 2, wherein: the ball head (3), the filler neck (1) and the outer sleeve nut (2) are all made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610056108.8A CN111373867B (en) | 2006-06-12 | 2006-06-12 | Composite sealing pipeline connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610056108.8A CN111373867B (en) | 2006-06-12 | 2006-06-12 | Composite sealing pipeline connecting piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111373867B true CN111373867B (en) | 2010-12-15 |
Family
ID=71223052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610056108.8A Active CN111373867B (en) | 2006-06-12 | 2006-06-12 | Composite sealing pipeline connecting piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111373867B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283470A (en) * | 2020-10-30 | 2021-01-29 | 中国航发沈阳发动机研究所 | Detachable pipe joint |
-
2006
- 2006-06-12 CN CN200610056108.8A patent/CN111373867B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283470A (en) * | 2020-10-30 | 2021-01-29 | 中国航发沈阳发动机研究所 | Detachable pipe joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR03 | Grant of secret patent right | ||
| DC01 | Secret patent status has been lifted | ||
| DC01 | Secret patent status has been lifted |