CN105318118B - A kind of fuel oil pipe connecting structure and its assembly technology - Google Patents
A kind of fuel oil pipe connecting structure and its assembly technology Download PDFInfo
- Publication number
- CN105318118B CN105318118B CN201510750120.8A CN201510750120A CN105318118B CN 105318118 B CN105318118 B CN 105318118B CN 201510750120 A CN201510750120 A CN 201510750120A CN 105318118 B CN105318118 B CN 105318118B
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- Prior art keywords
- pad
- connecting portion
- sealing
- ring
- fuel
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
- F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses a kind of fuel oil pipe connecting structure and its assembly technology, including：Fuel pipe, jointing, O-ring, pad and attaching nut；Jointing includes first connecting portion, second connecting portion and sealing, and first connecting portion is connected with fuel pipe；Pad and O-ring are installed in sealing；Pad is tapered annular；Attaching nut is arranged on fuel pipe；Its assembly technology, comprises the following steps：S1, installation attaching nut；S2, connection first connecting portion and fuel pipe；S3, installation pad and O-ring；S4, screw attaching nut；S5, pad is exerted a force, it is carried out extending up to its inner ring surface from cylindrical place face direction to face direction where inner circle and is produced blind-mate to the periphery of sealing；S6, second connecting portion access treated on fitting that the connection of fuel pipe is completed.The present invention has good sealing function, can avoid connecting end surface leakage problem.
Description
Technical field
The present invention relates to technical field of sealing technology, more particularly to a kind of fuel oil pipe connecting structure and its assembly technology.
Background technology
In the low-voltage fuel pipeline of diesel engine, generally require and be attached using joint, but existing joint design
Poor sealing performance, the problem of connecting end surface is easy to seepage occur.
The content of the invention
The technical problem existed based on above-mentioned background technology, the present invention proposes a kind of fuel oil pipe connecting structure and its assembler
Skill.
The present invention proposes a kind of fuel oil pipe connecting structure, including：Fuel pipe, jointing, O-ring, pad and connection
Nut, wherein：
Jointing includes first connecting portion, second connecting portion and sealing, and first connecting portion is stretched by one end of fuel pipe
Enter its inside and be connected thereto；
Sealing position is between first connecting portion and second connecting portion, and the external diameter of sealing is respectively smaller than first connecting portion
With the external diameter of second connecting portion；
Pad and O-ring are installed in sealing, and pad is located at close to the side of fuel pipe；Pad is by metal material system
Form, pad is annular, face and its cylindrical place face where the inner circle of pad are parallel to each other and with spacing formation taper
Face where ring-type, pad inner circle is resisted against on the end face at fuel oil end；O-ring is made by elastomeric material, and O-ring is close to pad
Side be resisted against pad it is cylindrical on the whole；
Attaching nut is arranged on fuel pipe and is threadedly coupled with fuel pipe, and one end of attaching nut is resisted against pad
On.
Preferably, the outer peripheral face of first connecting portion is provided with external screw thread, and the inner peripheral surface of fuel pipe one end is provided with outer with this
The internal thread of threaded adapter.
Preferably, the outer peripheral face of second connecting portion is provided with external screw thread.
Preferably, the external diameter of first connecting portion and second connecting portion is equal.
Preferably, the internal diameter of pad and the external diameter of second connecting portion are interference fitted, and pad is pushed away by one end of second connecting portion
Enter to sealing.
Preferably, O-ring is inserted in sealing and is resisted against on pad by one end of second connecting portion.
Preferably, the external diameter interference fit of the internal diameter of O-ring and sealing.
A kind of assembly technology of fuel oil pipe connecting structure, specifically includes following steps：
S1, attaching nut is sleeved on fuel pipe；
S2, first connecting portion is inserted into fuel pipe and be connected thereto；
S3, pad, O-ring be separately mounted on sealing, and the side in face where making pad inner circle is resisted against fuel oil
On the end face of pipe, the side of O-ring be resisted against pad it is cylindrical on the whole；
S4, screw attaching nut so that attaching nut abuts with pad；
S5, pad is exerted a force, make it carry out extending up to its inner ring from cylindrical place face direction to face direction where inner circle
Blind-mate is produced in face of the periphery of sealing；
S6, second connecting portion access treated on fitting that the connection of fuel pipe is completed.
In the present invention, by the way that jointing is arranged into first connecting portion, second connecting portion and sealing, and make sealing
External diameter be respectively smaller than the external diameter of first connecting portion and second connecting portion；First connecting portion is stretched into fuel pipe；By pad and O
Type circle is separately mounted on sealing, and pad inner circle place face is resisted against on the end face at fuel oil end, and O-ring is close to pad
Side be resisted against pad it is cylindrical on the whole；Attaching nut is arranged on fuel pipe, and make one end of attaching nut against
On pad；By this structure setting, when fuel pipe is that pipe fitting or fuel tank wait fitting are attached, played in connection end
Good sealing function, can avoid connecting end surface leakage problem, and due to the pad in the present invention, pad is made by metal material
Form, pad is annular, face and its cylindrical place face where the inner circle of pad are parallel to each other and with spacing formation conical ring
Shape, is improved using this structure, makes pad after installation is complete, using the ductility of metal, by producing it pad force
Raw face direction where from cylindrical place face direction to inner circle is extended, so that the internal diameter of pad progressively reduces until in it
Anchor ring produces blind-mate to the periphery of sealing, solves existing plane gasket construction to adapt to installation requirements, its
The external diameter that internal diameter is more than jointing is designed, and secondary operation can not be carried out after installation is complete so that its inner ring surface connects with being connected
The problem of having gap all the time between the outer peripheral face of head, can effectively improve its sealing property.
Brief description of the drawings
Fig. 1 is a kind of exploded view of fuel oil pipe connecting structure proposed by the present invention.
Embodiment
Below, technical scheme is described in detail by specific embodiment.
As shown in figure 1, Fig. 1 is a kind of exploded view of fuel oil pipe connecting structure proposed by the present invention.
Reference picture 1, a kind of fuel oil pipe connecting structure that the embodiment of the present invention is proposed, including：Fuel pipe 1, jointing 2, O
Type circle 3, pad 4 and attaching nut 5, wherein：
The internal thread and external screw thread being respectively equipped with the inner peripheral surface and outer peripheral face of the one end of fuel pipe 1；Jointing 2 includes the
One connecting portion 21, second connecting portion 22 and sealing 23, the outer peripheral face of first connecting portion 21 are provided with external screw thread, first connecting portion 21
Portion is inserted into the inner by one end of fuel pipe 1, and is threadedly coupled with it；Sealing 23 is located at first connecting portion 21 and second connecting portion
Between 22, and the external diameter of sealing 23 is respectively smaller than the external diameter of first connecting portion 21 and second connecting portion 22；The internal diameter of pad 4 with
The external diameter interference fit of second connecting portion 22, pad 4 is pushed into sealing 23 by one end of second connecting portion 22, and pad 4 is by gold
Category material is made, and pad 4 is annular, between face and its cylindrical place face are parallel to each other and had where the inner circle of pad 4
It is resisted against away from face where forming tapered annular, the inner circle of pad 4 on the end face at fuel oil end；When pad 4 is by the one of second connecting portion 22
End is pushed into after sealing 23, and O-ring 3 is inserted in sealing 23 and is resisted against on pad 4 by one end of second connecting portion 22, and
The internal diameter of O-ring 3 is interference fitted with the external diameter of sealing 23；O-ring 3 is made by elastomeric material, and O-ring 3 is close to pad 4
Side be resisted against pad 4 it is cylindrical on the whole；Attaching nut 5 is arranged on fuel pipe 1 and is threadedly coupled with fuel pipe 1,
And one end of attaching nut 5 is resisted against on pad 4.
Install for convenience, jointing 2 is not had in directionality, the present embodiment, the outer peripheral face of second connecting portion 22
It is provided with external screw thread；First connecting portion 21 is equal with the external diameter of second connecting portion 22.
A kind of assembly technology of the attachment structure of fuel pipe 1, specifically includes following steps：
S1, attaching nut 5 is sleeved on fuel pipe 1；
S2, first connecting portion 21 is inserted into fuel pipe 1 and be connected thereto；
S3, pad 4, O-ring 3 be separately mounted on sealing 23, and the side in face where making the inner circle of pad 4 is resisted against
On the end face of fuel pipe 1, the side of O-ring 3 be resisted against pad 4 it is cylindrical on the whole；
S4, screw attaching nut 5 so that attaching nut 5 abuts with pad 4；
S5, pad 4 is exerted a force, face direction where making it from cylindrical place face direction to inner circle carries out extending up to its inner ring
Blind-mate is produced in face of the periphery of sealing 23；
S6, the access of second connecting portion 22 treated on fitting that the connection of fuel pipe 1 is completed.
In the present invention, by the way that jointing 2 is arranged into first connecting portion 21, second connecting portion 22 and sealing 23, and
The external diameter of sealing 23 is set to be respectively smaller than the external diameter of first connecting portion 21 and second connecting portion 22；First connecting portion 21 is stretched into combustion
In oil pipe 1；Pad 4 and O-ring 3 are separately mounted on sealing 23, and the inner circle of pad 4 place face is resisted against fuel oil end
On end face, O-ring 3 close to the side of pad 4 be resisted against pad 4 it is cylindrical on the whole；Attaching nut 5 is arranged on fuel pipe
On 1, and one end of attaching nut 5 is set to be resisted against on pad 4；By this structure setting, fuel pipe 1 is pipe fitting or fuel tank etc.
When fitting is attached, good sealing function is played in connection end, connecting end surface leakage problem can be avoided, and due to this hair
Pad 4 in bright, pad 4 is made by metal material, and pad 4 is annular, face and its cylindrical institute where the inner circle of pad 4
It is parallel to each other in face and with spacing formation tapered annular, is improved using this structure, make pad 4 after installation is complete, utilized
The ductility of metal, is extended by producing it to the force of pad 4 from cylindrical place face direction to inner circle place face direction,
So that the internal diameter of pad 4 progressively reduces until its inner ring surface is solved to the periphery generation blind-mate of sealing 23
The existing structure of plane pad 4 is in order to adapt to installation requirements, and the external diameter that its internal diameter is more than jointing 2 is designed, in installation
After can not carry out secondary operation so that the problem of having gap all the time between the outer peripheral face of its inner ring surface and jointing 2, can have
Effect improves its sealing property.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (7)
1. a kind of fuel oil pipe connecting structure, it is characterised in that including：Fuel pipe (1), jointing (2), O-ring (3), pad
(4) and attaching nut (5), wherein：
Jointing (2) include first connecting portion (21), second connecting portion (22) and sealing (23), first connecting portion (21) by
One end of fuel pipe (1) inserts into the inner portion and is connected thereto；
Sealing (23) is located between first connecting portion (21) and second connecting portion (22), and the external diameter difference of sealing (23) is small
In the external diameter of first connecting portion (21) and second connecting portion (22)；
Pad (4) and O-ring (3) are installed in sealing (23), and pad (4) is located at close to the side of fuel pipe (1)；Pad
(4) it is made by metal material, pad (4) is annular, and face and its cylindrical place face are mutually put down where the inner circle of pad (4)
Go and with spacing formation tapered annular, face where pad (4) inner circle is resisted against on the end face at fuel oil end；O-ring (3) is by rubber
Material is made, O-ring (3) close to the side of pad (4) be resisted against pad (4) it is cylindrical on the whole；
Attaching nut (5) be arranged on fuel pipe (1) on and be threadedly coupled with fuel pipe (1), and attaching nut (5) one end against
On pad (4)；
The technique of the described fuel oil pipe connecting structure of assembling, specifically includes following steps：
S1, attaching nut (5) is sleeved on fuel pipe (1)；
S2, first connecting portion (21) is inserted into fuel pipe (1) and be connected thereto；
S3, pad (4), O-ring (3) be separately mounted on sealing (23), and the side in face where making pad (4) inner circle is supported
On the end face for leaning against fuel pipe (1), the side of O-ring (3) be resisted against pad (4) it is cylindrical on the whole；
S4, screw attaching nut (5) so that attaching nut (5) abuts with pad (4)；
S5, pad (4) is exerted a force, make it carry out extending up to its inner ring surface from cylindrical place face direction to face direction where inner circle
Blind-mate is produced to the periphery of sealing (23)；
S6, second connecting portion (22) access treated on fitting that the connection of fuel pipe (1) is completed.
2. fuel oil pipe connecting structure according to claim 1, it is characterised in that set on the outer peripheral face of first connecting portion (21)
There is external screw thread, the inner peripheral surface of fuel pipe (1) one end is provided with the internal thread being adapted to the external screw thread.
3. fuel oil pipe connecting structure according to claim 2, it is characterised in that set on the outer peripheral face of second connecting portion (22)
There is external screw thread.
4. fuel oil pipe connecting structure according to claim 3, it is characterised in that first connecting portion (21) and second connecting portion
(22) external diameter is equal.
5. fuel oil pipe connecting structure according to claim 4, it is characterised in that the internal diameter and second connecting portion of pad (4)
(22) external diameter interference fit, pad (4) is pushed into sealing (23) by one end of second connecting portion (22).
6. fuel oil pipe connecting structure according to claim 1, it is characterised in that O-ring (3) is by second connecting portion (22)
It is inserted in sealing (23) and is resisted against on pad (4) in one end.
7. fuel oil pipe connecting structure according to claim 6, it is characterised in that the internal diameter of O-ring (3) and sealing (23)
External diameter interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510750120.8A CN105318118B (en) | 2015-11-06 | 2015-11-06 | A kind of fuel oil pipe connecting structure and its assembly technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510750120.8A CN105318118B (en) | 2015-11-06 | 2015-11-06 | A kind of fuel oil pipe connecting structure and its assembly technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105318118A CN105318118A (en) | 2016-02-10 |
| CN105318118B true CN105318118B (en) | 2017-10-27 |
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ID=55246125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510750120.8A Active CN105318118B (en) | 2015-11-06 | 2015-11-06 | A kind of fuel oil pipe connecting structure and its assembly technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105318118B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2280193Y (en) * | 1997-03-20 | 1998-04-29 | 山东小鸭集团有限责任公司 | Quick action joint for pipeline |
| CN2295880Y (en) * | 1997-04-28 | 1998-10-28 | 党建真 | High sealing reliability stop valve of air conditioner |
| CN201126071Y (en) * | 2007-11-07 | 2008-10-01 | 衢州光明电力工程有限公司 | Electric power transformer pipeline connection assembly |
| CN201225466Y (en) * | 2008-07-04 | 2009-04-22 | 俞张良 | Bent-pipe joint |
| CN202469292U (en) * | 2012-03-14 | 2012-10-03 | 广东明阳龙源电力电子有限公司 | Connection part for water cooling pipelines of wind power converter |
| CN106104131B (en) * | 2014-02-27 | 2018-05-29 | 桑杜科技有限公司 | face seal fitting |
| CN205136870U (en) * | 2015-11-06 | 2016-04-06 | 安徽中鼎金亚汽车管件制造有限公司 | Fire oil pipe connection structure |
-
2015
- 2015-11-06 CN CN201510750120.8A patent/CN105318118B/en active Active
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| Publication number | Publication date |
|---|---|
| CN105318118A (en) | 2016-02-10 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 242300 Meicun Road, Heli Park, Ningguo Economic and Technological Development Zone, Xuancheng City, Anhui Province Patentee after: Anhui Zhongding Fluid System Co., Ltd. Address before: 242300 Meicun Road, Heli Park, Ningguo Economic and Technological Development Zone, Xuancheng City, Anhui Province Patentee before: Anhui Zhongding-Keumah Auto Hose & Pipe Assembly Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |