CN106287040A - A kind of triple seal union - Google Patents
A kind of triple seal union Download PDFInfo
- Publication number
- CN106287040A CN106287040A CN201510311748.8A CN201510311748A CN106287040A CN 106287040 A CN106287040 A CN 106287040A CN 201510311748 A CN201510311748 A CN 201510311748A CN 106287040 A CN106287040 A CN 106287040A
- Authority
- CN
- China
- Prior art keywords
- union
- head
- cambered surface
- thread
- spheroid
- 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.)
- Pending
Links
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
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/04—Screw-threaded joints; Forms of screw-threads for such joints with additional sealings
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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
Abstract
The present invention relates to a kind of triple seal union, be made up of union head, percussion nut, thread head, rubber seal.Union head bottom is spheroid, and top is cylinder；It is provided with the spherical cambered surface of indent between thread head upper surface and inner hole wall, and agrees with sealing mutually with the spheroid cambered surface of union head bottom；Tap and between through hole and the screwed hole on nut inner thread top, be provided with the spherical cambered surface transition of indent, and agree with sealing mutually with the spheroid cambered surface of union head bottom；The spheroid of union head bottom is provided with seal groove, and rubber seal is embedded in seal groove.The present invention is sealed together with tapping between nut firmly by union head, the soft seal and the most firmly sealing together with between thread head of union head, being simultaneously achieved triple seal effect when union head docks two pipes, its good sealing effect, stability are strong, simple in construction, practical reliable.
Description
Technical field
The present invention relates to a kind of sealing union for connecting two pipelines, particularly relate to the sealing structure of this sealing union, belong to seal for pipe joints interconnection technique field.
Background technology
In oil, the well head pipeline of natural gas extraction and transport pipeline, union is one of conventional connector connecting two pipelines.Traditional union seals the most single rubber seal or single metal hard sealing structure, its not only poor sealing performance, service life is short, maintenance rate is high, and occurs the security incident consequence caused when crude oil or oil and gas leakage extremely serious.Therefore, strengthen sealing and the stability thereof of union, be that oil, natural gas extraction operation prevent pipe leakage, it is ensured that the key of safety in production.
Summary of the invention
Connecting union for tradition and seal that structure is single to be easily caused pipe leakage and cause the drawback of security incident, the present invention provides a kind of triple seal union.
To achieve these goals, the present invention takes techniques below scheme and implements: a kind of triple seal union, is made up of union head, percussion nut, thread head, rubber seal, and described thread head upper end is screwed in the female thread tapping nut bottom；Described union head is placed in the through hole tapping nut inner thread top, it is characterised in that:
Described union head bottom is spheroid, and top is cylinder；
It is provided with the spherical cambered surface of indent between described thread head upper surface and inner hole wall, and agrees with sealing mutually with the spheroid cambered surface of union head bottom；
It is provided with the spherical cambered surface transition of indent between through hole and the screwed hole on described percussion nut inner thread top, and the spheroid cambered surface of the spherical cambered surface of indent and union head bottom agrees with sealing mutually；
The spheroid of described union head bottom is provided with seal groove, described rubber seal is embedded in seal groove, and when the spheroid cambered surface of union head bottom agrees with sealing mutually with the spherical cambered surface of thread head upper end indent, rubber seal is positioned at conjunction surface, and the sealed extruded agreed with mutually by union head lower spherical with thread head upper end indent spherical cambered surface.
As the another kind of improvement of the present invention, the sealing conjunction surface between described union head and thread head, between union head and percussion nut may be designed as again the conical surface.
The present invention seals the second between rubber seal and thread head upper end indent spherical cambered surface on union head by the first that union head lower spherical cambered surface and thread head upper end indent spherical cambered surface agree with mutually and seals, and union head lower spherical cambered surface with tap the three seals that agrees with mutually of indent spherical cambered surface on nut inner thread top, it is achieved thereby that triple seal effect when union head docks two pipes.Its good sealing effect, stability are strong, simple in construction, practical reliable.
Accompanying drawing explanation
Accompanying drawing 1 is the main sectional structure schematic diagram of the present invention:
Accompanying drawing 2 is the plan structure schematic diagram of the present invention.
In accompanying drawing 1,2: 1 union head, 101 spheroid cambered surfaces, 2 tap nuts, 201 and 301 indent spherical cambered surfaces, 3 thread heads, 4 rubber seal.
Detailed description of the invention
Below in conjunction with accompanying drawing the present invention is further explained explanation:
As shown in Figure 1, the bottom of union head 1 is spheroid, and top is cylinder；Tap and be provided with indent spherical cambered surface 201 transition between through hole and the screwed hole on nut 2 female thread top, and spheroid cambered surface 101 phase of indent spherical cambered surface 201 and union head 1 bottom agrees with sealing；It is provided with indent spherical cambered surface 301 between thread head 3 upper surface and inner hole wall, and agrees with sealing with spheroid cambered surface 101 phase of union head 1 bottom；Thread head 3 upper end is screwed in the female thread tapping nut 2 bottom；The cylinder on union head 1 top penetrates in the through hole tapping nut 2 female thread top；The spheroid of union head 1 bottom is provided with seal groove, rubber seal 4 is embedded in seal groove, and when the spheroid cambered surface 101 of union head 1 bottom agrees with sealing with indent spherical cambered surface 301 phase of thread head 3 upper end, rubber seal 4 is positioned at conjunction surface, and the sealed extruded agreed with by union head 1 lower spherical cambered surface 101 with thread head 3 upper end indent spherical cambered surface 301 phase.
When the present invention installs, first by the cylinder on union head 1 top through the through hole tapping nut 2 female thread top, and rubber seal 4 is embedded in the seal groove on the spheroid of union head 1 bottom, then thread head 3 upper end is screwed in the female thread tapping nut 2 bottom, impact taps nut 2 and rotates, indent spherical cambered surface 201 between percussion nut 2 female thread upper through-hole and screwed hole is made to agree with spheroid cambered surface 101 phase of union head 1 bottom, and wedge pushes away union head 1 and moves to thread head 3 direction, and make the spheroid cambered surface 101 of union head 1 bottom and indent spherical cambered surface 301 phase of thread head 3 upper end agree with sealing, extruding rubber seal 4 compression simultaneously, constitute the soft seal between rubber seal 4 and the indent spherical cambered surface 301 of thread head 3 upper end.
The present invention is sealed together with tapping between nut 2 firmly by union head 1, union head 1 soft seal and the most firmly sealing together with between thread head 3, being simultaneously achieved triple seal effect when union head docks two pipes, its good sealing effect, stability are strong, simple in construction, practical reliable.
Claims (2)
1. a triple seal union, is made up of union head, percussion nut, thread head, rubber seal, and described thread head upper end is screwed in the female thread tapping nut bottom；Described union head is placed in the through hole tapping nut inner thread top, it is characterised in that:
Described union head bottom is spheroid, and top is cylinder；
It is provided with the spherical cambered surface of indent between described thread head upper surface and inner hole wall, and agrees with sealing mutually with the spheroid cambered surface of union head bottom；
It is provided with the spherical cambered surface transition of indent between through hole and the screwed hole on described percussion nut inner thread top, and the spheroid cambered surface of the spherical cambered surface of indent and union head bottom agrees with sealing mutually；
The spheroid of described union head bottom is provided with seal groove；
Described rubber seal is embedded in seal groove, and when the spheroid cambered surface of union head bottom agrees with sealing mutually with the spherical cambered surface of thread head upper end indent, rubber seal is positioned at conjunction surface, and the sealed extruded agreed with mutually by union head lower spherical with thread head upper end indent spherical cambered surface.
A kind of triple seal union the most according to claim 1, it is characterised in that the sealing conjunction surface between described union head and thread head, between union head and percussion nut is the conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510311748.8A CN106287040A (en) | 2015-06-10 | 2015-06-10 | A kind of triple seal union |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510311748.8A CN106287040A (en) | 2015-06-10 | 2015-06-10 | A kind of triple seal union |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106287040A true CN106287040A (en) | 2017-01-04 |
Family
ID=57658716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510311748.8A Pending CN106287040A (en) | 2015-06-10 | 2015-06-10 | A kind of triple seal union |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106287040A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223933A (en) * | 2018-03-19 | 2018-06-29 | 尹财富 | Pipe couplings |
| CN108953802A (en) * | 2018-08-01 | 2018-12-07 | 安徽海蚨祥橡胶有限公司 | A kind of rubber-plastic sealing part of valve and pipe fitting |
| CN109000067A (en) * | 2018-09-30 | 2018-12-14 | 四川宏华电气有限责任公司 | A kind of cantilever shortization union component and the building method of component sealing optimization |
-
2015
- 2015-06-10 CN CN201510311748.8A patent/CN106287040A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223933A (en) * | 2018-03-19 | 2018-06-29 | 尹财富 | Pipe couplings |
| CN108953802A (en) * | 2018-08-01 | 2018-12-07 | 安徽海蚨祥橡胶有限公司 | A kind of rubber-plastic sealing part of valve and pipe fitting |
| CN109000067A (en) * | 2018-09-30 | 2018-12-14 | 四川宏华电气有限责任公司 | A kind of cantilever shortization union component and the building method of component sealing optimization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170104 |
|
| WD01 | Invention patent application deemed withdrawn after publication |