CN105318118A - Connection structure for fuel pipe and assembly technology thereof - Google Patents
Connection structure for fuel pipe and assembly technology thereof Download PDFInfo
- Publication number
- CN105318118A CN105318118A CN201510750120.8A CN201510750120A CN105318118A CN 105318118 A CN105318118 A CN 105318118A CN 201510750120 A CN201510750120 A CN 201510750120A CN 105318118 A CN105318118 A CN 105318118A
- Authority
- CN
- China
- Prior art keywords
- fuel pipe
- pad
- joint
- face
- sealed department
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 63
- 238000005516 engineering process Methods 0.000 title claims abstract description 12
- 239000000295 fuel oil Substances 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 6
- 239000002828 fuel tank Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- 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 connection structure for a fuel pipe and an assembly technology thereof. The connection structure for the fuel pipe comprises the fuel pipe, a connecting connector, an O-shaped ring, a gasket and a connecting nut. The connecting connector comprises a first connecting part, a second connecting part and a sealing part. The first connecting part is connected with the fuel pipe. The gasket and the O-shaped ring are both arranged on the sealing part. The gasket is conical and annular. The connecting nut is installed on the fuel pipe. The assembly technology of the connection structure for the fuel pipe comprises the following steps that S1, the connecting nut is installed; S2, the first connecting part and the fuel pipe are connected; S3, the gasket and the O-shaped ring are installed; S4, the connecting nut is screwed tightly; S5, pressure is applied to the gasket, so that the gasket extends from the direction of the surface where the outer circle is located to the direction of the surface where the inner circle is located till the inner ring surface of the gasket is in no clearance fit with the periphery of the sealing part; and S6, the second connecting part is connected to parts to be connected, and connection of the fuel pipe is completed. The connection structure for the fuel pipe and the assembly technology thereof have a good sealing effect, and the problem that leakage occurs on a connecting end surface can be avoided.
Description
Technical field
The present invention relates to technical field of sealing technology, particularly relate to a kind of fuel pipe linkage structure and assembly technology thereof.
Background technique
In the low-voltage fuel pipeline of diesel engine, generally need to adopt joint to connect, but the poor sealing performance of existing joint structure, be easy at connecting end surface the problem occurring seepage.
Summary of the invention
Based on the technical problem that above-mentioned background technology exists, the present invention proposes a kind of fuel pipe linkage structure and assembly technology thereof.
The present invention proposes a kind of fuel pipe linkage structure, comprising: fuel pipe, jointing, O type circle, pad and attaching nut, wherein:
Jointing comprises the first joint, the second joint and sealed department, and the first joint inserts into the inner portion by one end of fuel pipe and is connected with it;
Sealed department is between the first joint and the second joint, and the external diameter of sealed department is less than the external diameter of the first joint and the second joint respectively;
Pad and O type circle are installed in sealed department, and pad is positioned at the side near fuel pipe; Pad is made by metallic material, and pad is ring, and the face, inner circle place of pad and its face, cylindrical place are parallel to each other and have spacing and form tapered annular, and face, pad inner circle place is resisted against on the end face of fuel oil end; O type circle is made by rubber material, and O type circle is resisted against the cylindrical institute of pad on the whole near the side of pad;
Attaching nut to be arranged on fuel pipe and to be threaded with fuel pipe, and one end of attaching nut is resisted against on pad.
Preferably, the outer circumferential face of the first joint is provided with outside thread, and the inner peripheral surface of fuel pipe one end is provided with the internal thread with this outside thread adaptation.
Preferably, the outer circumferential face of the second joint is provided with outside thread.
Preferably, the external diameter of the first joint and the second joint is equal.
Preferably, the internal diameter of pad and the external diameter interference fit of the second joint, pad is pushed into sealed department by one end of the second joint.
Preferably, O type circle is inserted in sealed department by one end of the second joint and is resisted against on pad.
Preferably, the internal diameter of O type circle and the external diameter interference fit of sealed department.
An assembly technology for fuel pipe linkage structure, specifically comprises the following steps:
S1, attaching nut is sleeved on fuel pipe;
S2, the first joint be inserted in fuel pipe and be connected with it;
S3, pad, O type circle to be arranged on sealed department respectively, and to make the side in face, pad inner circle place be resisted against on the end face of fuel pipe, the side of O type circle is resisted against pad cylindrical institute on the whole;
S4, screw attaching nut, make attaching nut and pad mutually against;
S5, to pad force, it is made to be carried out extending to direction, face, inner circle place by direction, face, cylindrical place until its inner ring surface produces blind-mate to the periphery of sealed department;
S6, by second joint access treat on fitting, the connection of fuel pipe completes.
In the present invention, by jointing being arranged to the first joint, the second joint and sealed department, and the external diameter of sealed department is made to be less than the external diameter of the first joint and the second joint respectively, first joint is stretched in fuel pipe, pad and O type circle are arranged on sealed department respectively, and make face, pad inner circle place be resisted against on the end face of fuel oil end, O type circle is resisted against the cylindrical institute of pad on the whole near the side of pad, attaching nut is arranged on fuel pipe, and makes one end of attaching nut be resisted against on pad, by this vibrational power flow, when fuel pipe is that pipe fitting or fuel tank wait for that fitting connects, good seal action is played at connecting end, connecting end surface leakage problem can be avoided, and due to the pad in the present invention, pad is made by metallic material, pad is ring, the face, inner circle place of pad and its face, cylindrical place are parallel to each other and have spacing and form tapered annular, utilize this architecture advances, make pad after installation is complete, utilize the ductility of metal, extended to direction, face, inner circle place by direction, face, cylindrical place by making it produce to pad force, thus the internal diameter of pad is progressively reduced until its inner ring surface produces blind-mate to the periphery of sealed department, solve existing plane gasket construction to adapt to installation requirements, its internal diameter is greater than the external diameter design of jointing, secondary operations cannot be carried out after installation is complete, make the problem having gap between its inner ring surface and outer circumferential face of jointing all the time, can effectively improve its sealability.
Accompanying drawing explanation
Fig. 1 is the exploded view of a kind of fuel pipe linkage structure that the present invention proposes.
Embodiment
Below, by specific embodiment, technological scheme of the present invention is described in detail.
As shown in Figure 1, Fig. 1 is the exploded view of a kind of fuel pipe linkage structure that the present invention proposes.
With reference to Fig. 1, a kind of fuel pipe linkage structure that the embodiment of the present invention proposes, comprising: fuel pipe 1, jointing 2, O type circle 3, pad 4 and attaching nut 5, wherein:
The internal thread that the inner peripheral surface of fuel pipe 1 one end and outer circumferential face are respectively equipped with and outside thread; The outer circumferential face that jointing 2 comprises the first joint 21, second joint 22 and sealed department 23, first joint 21 is provided with outside thread, and the first joint 21 inserts into the inner portion by one end of fuel pipe 1, and is threaded with it; Sealed department 23 is between the first joint 21 and the second joint 22, and the external diameter of sealed department 23 is less than the external diameter of the first joint 21 and the second joint 22 respectively; The internal diameter of pad 4 and the external diameter interference fit of the second joint 22, pad 4 is pushed into sealed department 23 by one end of the second joint 22, pad 4 is made by metallic material, pad 4 is ring, the face, inner circle place of pad 4 and its face, cylindrical place are parallel to each other and have spacing and form tapered annular, and face, pad 4 inner circle place is resisted against on the end face of fuel oil end; After pad 4 is pushed into sealed department 23 by one end of the second joint 22, O type circle 3 is inserted in sealed department 23 by one end of the second joint 22 and is resisted against on pad 4, and the internal diameter of O type circle 3 and the external diameter interference fit of sealed department 23; O type circle 3 is made by rubber material, and O type circle 3 is resisted against the cylindrical institute of pad 4 on the whole near the side of pad 4; Attaching nut 5 to be arranged on fuel pipe 1 and to be threaded with fuel pipe 1, and one end of attaching nut 5 is resisted against on pad 4.
Conveniently install, make jointing 2 not have directivity, in the present embodiment, the outer circumferential face of the second joint 22 is provided with outside thread; The external diameter of the first joint 21 and the second joint 22 is equal.
An assembly technology for fuel pipe 1 linkage structure, specifically comprises the following steps:
S1, attaching nut 5 is sleeved on fuel pipe 1;
S2, the first joint 21 be inserted in fuel pipe 1 and be connected with it;
S3, pad 4, O type circle 3 to be arranged on respectively on sealed department 23, and to make the side in face, pad 4 inner circle place be resisted against on the end face of fuel pipe 1, the side of O type circle 3 is resisted against pad 4 cylindrical institute on the whole;
S4, screw attaching nut 5, make attaching nut 5 and pad 4 mutually against;
S5, pad 4 to be exerted a force, make it be carried out extending to direction, face, inner circle place by direction, face, cylindrical place until its inner ring surface produces blind-mate to the periphery of sealed department 23;
S6, by second joint 22 access treat on fitting, the connection of fuel pipe 1 completes.
In the present invention, by jointing 2 being arranged to the first joint 21, second joint 22 and sealed department 23, and the external diameter of sealed department 23 is made to be less than the external diameter of the first joint 21 and the second joint 22 respectively, first joint 21 is stretched in fuel pipe 1, pad 4 and O type circle 3 are arranged on respectively on sealed department 23, and make face, pad 4 inner circle place be resisted against on the end face of fuel oil end, O type circle 3 is resisted against the cylindrical institute of pad 4 on the whole near the side of pad 4, attaching nut 5 is arranged on fuel pipe 1, and makes one end of attaching nut 5 be resisted against on pad 4, by this vibrational power flow, when fuel pipe 1 is that pipe fitting or fuel tank wait for that fitting connects, good seal action is played at connecting end, connecting end surface leakage problem can be avoided, and due to the pad 4 in the present invention, pad 4 is made by metallic material, pad 4 is ring, the face, inner circle place of pad 4 and its face, cylindrical place are parallel to each other and have spacing and form tapered annular, utilize this architecture advances, make pad 4 after installation is complete, utilize the ductility of metal, extended to direction, face, inner circle place by direction, face, cylindrical place by making it produce to pad 4 force, thus the internal diameter of pad 4 is progressively reduced until its inner ring surface produces blind-mate to the periphery of sealed department 23, solve existing plane pad 4 structure to adapt to installation requirements, its internal diameter is greater than the external diameter design of jointing 2, secondary operations cannot be carried out after installation is complete, make the problem having gap between the outer circumferential face of its inner ring surface and jointing 2 all the time, can effectively improve its sealability.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technological scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (8)
1. a fuel pipe linkage structure, is characterized in that, comprising: fuel pipe (1), jointing (2), O type circle (3), pad (4) and attaching nut (5), wherein:
Jointing (2) comprises the first joint (21), the second joint (22) and sealed department (23), and the first joint (21) is inserted into the inner portion by one end of fuel pipe (1) and is connected with it;
Sealed department (23) is positioned between the first joint (21) and the second joint (22), and the external diameter of sealed department (23) is less than the external diameter of the first joint (21) and the second joint (22) respectively;
Pad (4) and O type circle (3) are installed in sealed department (23), and pad (4) is positioned at the side near fuel pipe (1); Pad (4) is made by metallic material, pad (4) is ring, the face, inner circle place of pad (4) and its face, cylindrical place are parallel to each other and have spacing and form tapered annular, and face, pad (4) inner circle place is resisted against on the end face of fuel oil end; O type circle (3) is made by rubber material, and O type circle (3) is resisted against the cylindrical institute of pad (4) on the whole near the side of pad (4);
Attaching nut (5) is arranged on fuel pipe (1) and goes up and be threaded with fuel pipe (1), and one end of attaching nut (5) is resisted against on pad (4).
2. fuel pipe linkage structure according to claim 1, is characterized in that, the outer circumferential face of the first joint (21) is provided with outside thread, and the inner peripheral surface of fuel pipe (1) one end is provided with the internal thread with this outside thread adaptation.
3. fuel pipe linkage structure according to claim 2, is characterized in that, the outer circumferential face of the second joint (22) is provided with outside thread.
4. fuel pipe linkage structure according to claim 3, is characterized in that, the external diameter of the first joint (21) and the second joint (22) is equal.
5. fuel pipe linkage structure according to claim 4, it is characterized in that, the internal diameter of pad (4) and the external diameter interference fit of the second joint (22), pad (4) is pushed into sealed department (23) by one end of the second joint (22).
6. fuel pipe linkage structure according to claim 1, is characterized in that, O type circle (3) is inserted in sealed department (23) by one end of the second joint (22) and is resisted against on pad (4).
7. fuel pipe linkage structure according to claim 6, is characterized in that, the internal diameter of O type circle (3) and the external diameter interference fit of sealed department (23).
8. an assembly technology for fuel pipe (1) linkage structure according to any one of claim 1-7, is characterized in that, specifically comprise the following steps:
S1, attaching nut (5) is sleeved on fuel pipe (1);
S2, the first joint (21) be inserted in fuel pipe (1) and be connected with it;
S3, pad (4), O type circle (3) are arranged on sealed department (23) respectively, and making the side in face, pad (4) inner circle place be resisted against on the end face of fuel pipe (1), the side of O type circle (3) is resisted against pad (4) cylindrical institute on the whole;
S4, screw attaching nut (5), make attaching nut (5) and pad (4) mutually against;
S5, to pad (4) force, it is made to be carried out extending to direction, face, inner circle place by direction, face, cylindrical place until its inner ring surface produces blind-mate to the periphery of sealed department (23);
S6, by the second joint (22) access treat on fitting, the connection of fuel pipe (1) completes.
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 true CN105318118A (en) | 2016-02-10 |
| CN105318118B CN105318118B (en) | 2017-10-27 |
Family
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) |
Citations (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 | A connector for water-cooled pipelines of wind power converters |
| WO2015130427A1 (en) * | 2014-02-27 | 2015-09-03 | Sundew Technologies, Llc | Face sealed fittings |
| 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
Patent Citations (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 | A connector for water-cooled pipelines of wind power converters |
| WO2015130427A1 (en) * | 2014-02-27 | 2015-09-03 | Sundew Technologies, Llc | Face sealed fittings |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105318118B (en) | 2017-10-27 |
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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 | ||
| 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. |