CN106287036A - A kind of welding combined high-voltage union - Google Patents
A kind of welding combined high-voltage union Download PDFInfo
- Publication number
- CN106287036A CN106287036A CN201510311780.6A CN201510311780A CN106287036A CN 106287036 A CN106287036 A CN 106287036A CN 201510311780 A CN201510311780 A CN 201510311780A CN 106287036 A CN106287036 A CN 106287036A
- Authority
- CN
- China
- Prior art keywords
- head
- pipe
- union
- thread
- nut
- 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
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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
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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
- F16L19/06—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 in which radial clamping is obtained by wedging action on non-deformed pipe ends
- F16L19/061—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 in which radial clamping is obtained by wedging action on non-deformed pipe ends a pressure ring being arranged between the clamping ring and the threaded member or the connecting member
Abstract
The present invention relates to a kind of welding combined high-voltage union, including union head, cutting ferrule, thread head, percussion nut, rectangular seal and A pipe, B pipe, union head is arranged on the lower end of A pipe, and thread head is arranged on the upper end of B pipe, and union head is an entirety with A pipe, thread head and B pipe are an entirety；Between union head and percussion nut, separable cutting ferrule is set；The thread head of B pipe upper end is screwed in the screwed hole tapped in nut and beats percussion nut, compel its seal face and press the compression limit that three cards put simultaneously, and compress the annular groove side on union head external diameter by compressing limit, so that union head moves downward, seal until 45 ° of sealing cones of the spherical cambered surface of bottom and thread head end constitute valves, and compress rectangular seal, thus reach A pipe and B pipe be tightly connected purpose.The present invention had both avoided the complexity of welding procedure, enhanced again the stability of connecting portion, not only easy accessibility, and good seal performance, and safety coefficient is high.
Description
Technical field
The present invention relates to technical field of pipeline connection, be specially a kind of pressure piping and connect union, a kind of combination type union structure that two pressure pipings realizations just can not be made to be tightly connected by welding procedure.
Background technology
In oil field shaft mouth pipeline, generally use union joint to be welded with Joining Technology between pipeline and pipeline and realize being tightly connected.This connected mode, the requirement to welding procedure is quite strict, especially for high pressure line, if there is welding procedure mistake, will seriously cause pipeline leakage.Therefore, the poor operability of its technique, and dismount fairly cumbersome, waste time and energy；During long-term use, layer there is also inevitable corrosion, and not only bearing capacity weakens increasingly, and potential safety hazard grows with each passing day.
Summary of the invention
It is an object of the invention to provide a kind of welding combined high-voltage union, make up existing union joint and be welded with Joining Technology and realize the technical deficiency that two pipes connect.
The technical scheme is that a kind of welding combined high-voltage union, including union head, cutting ferrule, percussion nut, rectangular seal, thread head and A pipe, B pipe, between one end and the external diameter of described union head, be equipped with spherical cambered surface；The external diameter of described thread head one end is provided with trapezoidal thread, is provided with 45 ° of sealing cones, cuts with seal groove bottom the conical surface between its end face and endoporus, and seal groove is built-in with described rectangular seal；Described percussion nut screws on the trapezoidal thread of thread head one end, and the top of trapezoidal internal thread is provided with the diameter through hole less than screwed hole diameter, constitutes step clamping plane between through hole and screwed hole；Described union head circular arc spherical surface constitutes, with 45 ° of sealing cones of thread head end, the valve face that seals, and the end face of spherical cambered surface bottom compresses rectangular seal, it is characterised in that:
Described union head is arranged on the lower end of A pipe, and thread head is arranged on the upper end of B pipe, and union head is an entirety with A pipe, and thread head and B pipe are an entirety；
The external diameter on described union head shoot cambered surface top is less than the internal diameter of percussion nut trapezoidal internal thread upper through-hole, and is provided with an annular groove on its inner diameter；
The lower end of described cutting ferrule is provided with the compression limit outwards flown out, compress the external diameter on limit less than the internal diameter tapping nut thread hole, compress the external diameter on top, limit and the through hole internal diameter matched in clearance tapped in nut, the internal diameter of cutting ferrule is equal with the groove bottom diameter on union head, it is fastened on after cutting ferrule is divided equally vertically cutting at least two equal portions between annular groove and the through hole internal diameter tapped in nut on union head shoot cambered surface top, and between step clamping plane and the plane of annular groove side in tapping nut.
The present invention is provided with separable cutting ferrule between union head and percussion nut, thus broken existing union joint must by welding procedure could realize A pipe be connected with B pipe, otherwise the percussion nut of next joint just cannot be inserted in the A pipe other end, is i.e. difficult to the drawback that several pipe connects.It had both avoided the complexity of welding procedure, enhanced again bearing capacity and the stability of connecting portion, not only easy accessibility, and good seal performance, and safety coefficient is high.
Accompanying drawing explanation
Accompanying drawing 1 is the present invention main sectional structure schematic diagram.
In fig. 1: 1, union head, 2, cutting ferrule, 3, tap nut, 4, rectangular seal, 5, thread head, A manages, and B manages, and C manages.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is further explained explanation:
As required by accompanying drawing 1, between one end and the external diameter of union head 1, it is equipped with spherical cambered surface；The external diameter of thread head 5 one end is provided with trapezoidal thread, is provided with 45 ° of sealing cones, cuts with seal groove bottom the conical surface between its end face and endoporus, and seal groove is built-in with rectangular seal 4；Tap nut 3 to screw on the trapezoidal thread of thread head 5 one end, and the top of trapezoidal internal thread is provided with the diameter through hole less than screwed hole diameter, constitutes step clamping plane between through hole and screwed hole；Spherical cambered surface on union head 1 constitutes, with 45 ° of sealing cones of thread head 5 end, the valve face that seals, and the end face of spherical cambered surface bottom compresses rectangular seal 4；Union head 1 is arranged on the lower end of A pipe, and thread head 5 is arranged on the upper end of B pipe, and union head 1 is an entirety with A pipe, and thread head 5 and B pipe are an entirety；The external diameter on union head 1 spherical cambered surface top is less than the internal diameter of percussion nut 3 trapezoidal internal thread upper through-hole, and is provided with an annular groove on its inner diameter；The lower end of cutting ferrule 2 is provided with the compression limit outwards flown out, compress the external diameter on limit less than the internal diameter tapping nut 3 screwed hole, compress the external diameter on top, limit and the through hole internal diameter matched in clearance tapped in nut 3, the internal diameter of cutting ferrule 2 is equal with the groove bottom diameter on union head 1, divide equally vertically after completion of processing and be fastened on after cutting into three equal parts between the annular groove on union head 1 spherical cambered surface top and the through hole internal diameter tapped in nut 3, and between step clamping plane and the plane of annular groove side in tapping nut 3.
When the present invention installs, first three cutting ferrules 2 are seated in the annular groove on union head 1 external diameter of A pipe lower end；Then union head 1 is passed, together with three cutting ferrules 2, the through hole tapped in nut 3；After putting rectangular seal 4 in the seal groove of B pipe again, the thread head 5 of B pipe upper end it is screwed in the screwed hole tapped in nut 3 and beats percussion nut 3, compel its seal face and press the compression limit on three cutting ferrules 2 simultaneously, and press the annular groove side on union head 1 external diameter by compressing limit, so that union head 1 moves downward, seal until 45 ° of sealing cones of the spherical cambered surface of bottom and thread head 5 end constitute valves, and compress rectangular seal 4, thus reach A pipe and B pipe be tightly connected purpose.By above-mentioned same attachment structure, B pipe can be realized and be connected with C pipe.
Claims (2)
1. a welding combined high-voltage union, including union head (1), cutting ferrule (2), taps nut (3), rectangular seal (4), thread head (5) and A pipe, B pipe, is equipped with spherical cambered surface between one end and the external diameter of described union head (1)；The external diameter of described thread head one end is provided with trapezoidal thread, is provided with 45 ° of sealing cones, cuts with seal groove bottom the conical surface between its end face and endoporus, and seal groove is built-in with rectangular seal (4)；Described percussion nut (3) screws on the trapezoidal thread of thread head (5) one end, and the top of trapezoidal internal thread is provided with the diameter through hole less than screwed hole diameter, constitutes step clamping plane between through hole and screwed hole；Described union head (1) spherical cambered surface constitutes, with 45 ° of sealing cones of thread head (5) end, the valve face that seals, and the end face of spherical cambered surface bottom compresses rectangular seal (4), it is characterised in that:
Described union head (1) is arranged on the lower end of A pipe, and union head (1) is an entirety with A pipe；
Described thread head (5) is arranged on the upper end of B pipe, and thread head (5) is an entirety with B pipe.
2. a kind of welding combined high-voltage union as claimed in claim 1, it is characterised in that:
The external diameter on described union head (1) spherical cambered surface top is less than the internal diameter of percussion nut (3) trapezoidal internal thread upper through-hole, and is provided with an annular groove on its inner diameter；
The lower end of described cutting ferrule (2) is provided with the compression limit outwards flown out, compress the external diameter on limit less than the internal diameter tapping nut (3) screwed hole, compress the external diameter on top, limit and the through hole internal diameter matched in clearance tapped in nut (3), the internal diameter of cutting ferrule (2) is equal with the groove bottom diameter on union head (1), it is fastened between the annular groove on union head (1) sphere top and the through hole internal diameter tapped in nut (3) after cutting ferrule (2) is divided equally vertically cutting at least two equal portions, and is positioned between step clamping plane and the side of annular groove tapping nut (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510311780.6A CN106287036A (en) | 2015-06-10 | 2015-06-10 | A kind of welding combined high-voltage union |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510311780.6A CN106287036A (en) | 2015-06-10 | 2015-06-10 | A kind of welding combined high-voltage union |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106287036A true CN106287036A (en) | 2017-01-04 |
Family
ID=57658770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510311780.6A Pending CN106287036A (en) | 2015-06-10 | 2015-06-10 | A kind of welding combined high-voltage union |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106287036A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110952968A (en) * | 2019-12-30 | 2020-04-03 | 西南石油大学 | High fatigue life type superhigh pressure fracturing union connects |
| CN115892392A (en) * | 2022-11-30 | 2023-04-04 | 中国人民解放军92578部队 | High-pressure-resistant spherical shell and sealing device of inflatable life raft system |
-
2015
- 2015-06-10 CN CN201510311780.6A patent/CN106287036A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110952968A (en) * | 2019-12-30 | 2020-04-03 | 西南石油大学 | High fatigue life type superhigh pressure fracturing union connects |
| CN110952968B (en) * | 2019-12-30 | 2022-01-28 | 西南石油大学 | High fatigue life type superhigh pressure fracturing union connects |
| CN115892392A (en) * | 2022-11-30 | 2023-04-04 | 中国人民解放军92578部队 | High-pressure-resistant spherical shell and sealing device of inflatable life raft system |
| CN115892392B (en) * | 2022-11-30 | 2023-10-13 | 中国人民解放军92578部队 | High pressure-resistant spherical shell and sealing device of inflatable life raft system |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170104 |