CN104295853A - Blocking end plug for external pressure gas sealing test of pipes - Google Patents
Blocking end plug for external pressure gas sealing test of pipes Download PDFInfo
- Publication number
- CN104295853A CN104295853A CN201410504477.3A CN201410504477A CN104295853A CN 104295853 A CN104295853 A CN 104295853A CN 201410504477 A CN201410504477 A CN 201410504477A CN 104295853 A CN104295853 A CN 104295853A
- Authority
- CN
- China
- Prior art keywords
- groove
- diameter
- end plug
- external pressure
- welding
- 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
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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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/11—Plugs
- F16L55/1116—Plugs glued or welded
Abstract
The invention provides a blocking end plug for the external pressure gas sealing test of pipes. The end plug is an integrated machined part formed by connecting a straight port end with a groove end and is of a circular ring shape as a whole. The diameter of the outer surface of the straight port end is larger than or equal to the inner diameter of an outer pipe, and the diameter of the inner surface of the groove end is equal to the outer diameter of an inner pipe. The end face of the straight port end is provided with a chamfer, and the front end of the groove end is provided with an inner guide groove with the angle of 60 degrees. The outer surface of the joint of the straight port end and the groove end is provided with a welding groove with the angle of 120 degrees. The middle of the outer surface of the groove end is provided with a pressurization or measurement hole. The ring-shaped welding end plug has the advantages of being simple in structure, convenient to use, high in reliability, and capable of being reused after being used by remachining an inner pipe welding groove and an outer pipe welding groove. The structure provides a critical component for conveniently and quickly carrying out the external pressure gas sealing test of the pipes and provides clearer and more accurate data for safety use conditions of petroleum pipes.
Description
Technical field
The present invention relates to the shutoff end plug of a kind of tubing external pressure hermetic seal test, be applied to the full-scale external pressure gas sealing ability test in kind of OCTG.
Background technique
Along with reaching its maturity of the exploration of domestic shale gas and drilling technique, the applying working condition of OCTG is also more clear and accurate, is to ensure that shale gas is drilled and exploitation engineering safety, and the OCTG that oil field uses must have good critical external compressive resistance Leakage Gas ability.And the domestic and international test of the critical external compressive resistance hydraulic seal to tubing is at present very ripe, but there is no the precedent of carrying out critical external compressive resistance hermetic seal test.In this context, for simulating this operating mode of OCTG, inventing this annular solder end plug, having utilized this annular solder end plug, tubing external pressure hermetic seal test can have been carried out.
Summary of the invention
Do not seal the present situation of end plug for tubing external pressure hermetic seal test at present, the object of this invention is to provide the shutoff end plug of a kind of tubing external pressure hermetic seal test, be beneficial to tubing external pressure hermetic seal test.
For achieving the above object, the technical solution used in the present invention is to provide the shutoff end plug of a kind of tubing external pressure hermetic seal test, this end plug is used for the tubing critical external compressive resistance hermetic seal test containing outer tube and interior pipe, wherein, pipe is test sample, wherein: this end plug is the overall processing part that a Zhi Kou end is connected with groove end, global shape is circular, the internal diameter of the outer surface diameter >=described outer tube of described Zhi Kou end, and the inner surface diameter of described groove end is with the external diameter of described interior pipe; The end face of described Zhi Kou end is provided with chamfering, and lead cut in the front end of described groove end is provided with, inside leading groove angle is 60 °; The outer surface of Zhi Kou end and groove end connecting place is provided with bevel for welding, and bevel for welding angle is 120 °, and the intermediate portion of described groove end outer surface is provided with suppresses/measuring hole.
Effect of the present invention is that this annular solder end plug structure is simple, and easy to use, reliability is high, after this end plug processes interior pipe bevel for welding and interior pipe bevel for welding after using again, reusable.This structure, for convenience of the problem solving tubing external pressure hermetic seal test quickly, provides critical component, for OCTG safe handling operating mode provides more clear and data accurately.
Accompanying drawing explanation
The shutoff end plug structural representation of the present invention that Fig. 1 is;
Fig. 2 is the operation instruction schematic diagram of shutoff end plug of the present invention.
In figure:
1, interior pipe bevel for welding 2, outer tube bevel for welding 3, suppress/measuring hole
4, shutoff end plug 5, outer tube 6, weld bond 7, interior pipe
Embodiment
By reference to the accompanying drawings the structure of the shutoff end plug of tubing external pressure hermetic seal test of the present invention is illustrated.
The shutoff end plug of tubing external pressure hermetic seal test of the present invention, this end plug is used for the tubing critical external compressive resistance hermetic seal test containing outer tube and interior pipe, wherein, pipe is test sample, this end plug is the overall processing part that a Zhi Kou end is connected with groove end, global shape is circular, the internal diameter of the outer surface diameter >=described outer tube 5 of described Zhi Kou end, the inner surface diameter of described groove end is with the external diameter of described interior pipe; The end face of described Zhi Kou end is provided with chamfering, and lead cut 2 in the front end of described groove end is provided with, inside leading groove angle is 60 °; The outer surface of Zhi Kou end and groove end connecting place is provided with bevel for welding 1, and bevel for welding angle is 120 °, and the intermediate portion of described groove end outer surface is provided with suppresses/measuring hole 3.
Describedly to suppress/measuring hole 3 is tapped hole, with the concentric diameter that is connected with of described tapped hole be
through hole, be provided with the sealing cone at 60 ° of angles between described through hole and tapped hole.
As shown in Figure 1, 2, the shutoff end plug of material external pressure hermetic seal test of the present invention, this end plug is the overall processing part that a Zhi Kou end is connected with groove end, and global shape is circular, and this annular solder end plug includes interior pipe bevel for welding 1, outer tube bevel for welding 2, suppresses/measuring hole 3.Interior pipe bevel for welding 1, realizes sealing by welding with interior pipe 7; Outer tube bevel for welding 2, realizes sealing by welding with outer tube 5; Like this, pipe 7, outer tube 5 and two annular solder end plugs just define closed " annular space ", suppress/measuring hole 3, realize supercharging and the measurement of gas pressure by what end plug designed, to complete tubing external pressure hermetic seal test.The internal diameter of the outer surface diameter>=described outer tube 5 of described Zhi Kou end, the inner surface diameter of described groove end is with the external diameter of described interior pipe 7; The end face of described Zhi Kou end is provided with chamfering, and convenient and outer tube 5 is assembled; Lead cut 2 in the front end of described groove end is provided with, inside leading groove angle is 60 °, for welding with interior pipe; The outer surface of Zhi Kou end and groove end connecting place is provided with bevel for welding 1, and bevel for welding angle is 120 °, for welding with outer tube; The intermediate portion of described groove end outer surface is provided with suppresses/measuring hole, and this hole is designed to tapped hole, and this hole machined becomes 1-1/8-12UNF screw thread, hole depth 22mm, reprocesses one with this tapped hole is concentric
through hole, be designed with 60 ° of sealing cones between this through hole and tapped hole, for blocking high-pressure gas.The specification that this shutoff end plug is suitable for tubing is
The interior pipe bevel for welding 1 of the shutoff end plug of tubing external pressure hermetic seal test of the present invention is the core of whole device, leads the design of cut, the join strength of weld seam is significantly improved in it.Calm the anger outside in leakage test, interior pipe is by radial pressure, outer tube is subject to radial pull, be subject to the axial tensile force produced at end plug end face simultaneously, complicated three dimensional stress is subject to equally for weld seam, this proposes very high requirement with regard to welding quality, for ensureing the welding quality of weld seam, after adopting the design of interior pipe bevel for welding 1, the area of contact of weld seam and end plug and interior pipe is made to become large, improve the stress distribution of weld seam, the sectional area of weld seam too increases simultaneously, this ensures that there weld seam and there is enough intensity, what ensure that the hermetic seal of tubing external pressure tests carries out smoothly.
As shown in Figure 2, the mode of execution of the shutoff end plug of tubing external pressure hermetic seal test of the present invention is as follows:
1, select outer tube 5 according to the test pressure of interior pipe 7, ensure that the minimum interior surrender of outer tube 5 is greater than the test pressure of interior pipe 7.
2, according to the physical dimension of interior pipe 7 and outer tube 5, design and make the present invention 4.
3, interior pipe 7 and outer tube 5 and shutoff end plug 4 fit together.
4, the welding of weld seam 6 is completed.
5, the suppressing of two annular solder end plugs/measuring hole 3 is connected respectively suppress pipe and measuring transducer.
6, external pressure hermetic seal test is carried out by test pressure.
7, implement complete.
Claims (2)
1. the shutoff end plug of a tubing external pressure hermetic seal test, this end plug is used for the tubing critical external compressive resistance hermetic seal test containing outer tube and interior pipe, wherein, pipe is test sample, it is characterized in that: this end plug is the overall processing part that a Zhi Kou end is connected with groove end, global shape is circular, the internal diameter of the outer surface diameter >=described outer tube (5) of described Zhi Kou end, the inner surface diameter of described groove end is with the external diameter of described interior pipe; The end face of described Zhi Kou end is provided with chamfering, and lead cut (2) in the front end of described groove end is provided with, inside leading groove angle is 60 °; The outer surface of Zhi Kou end and groove end connecting place is provided with bevel for welding (1), and bevel for welding angle is 120 °, and the intermediate portion of described groove end outer surface is provided with suppresses/measuring hole (3).
2. the shutoff end plug of tubing external pressure hermetic seal test according to claim 1, is characterized in that: described in suppress/measuring hole (3) be tapped hole, with the concentric diameter that is connected with of described tapped hole be
through hole, be provided with the sealing cone at 60 ° of angles between described through hole and tapped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410504477.3A CN104295853B (en) | 2014-09-26 | 2014-09-26 | The shutoff end plug of tubing external pressure hermetic seal test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410504477.3A CN104295853B (en) | 2014-09-26 | 2014-09-26 | The shutoff end plug of tubing external pressure hermetic seal test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104295853A true CN104295853A (en) | 2015-01-21 |
| CN104295853B CN104295853B (en) | 2016-04-06 |
Family
ID=52315704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410504477.3A Active CN104295853B (en) | 2014-09-26 | 2014-09-26 | The shutoff end plug of tubing external pressure hermetic seal test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104295853B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4513605A (en) * | 1982-01-20 | 1985-04-30 | Manfred Hawerkamp | Method and device for testing welds of thermoplastic parts |
| CN200950104Y (en) * | 2006-09-19 | 2007-09-19 | 宝山钢铁股份有限公司 | Tube blanking adapter for oil sleeve explosive experiment |
| CN101486130A (en) * | 2009-02-17 | 2009-07-22 | 深圳雅昌管业有限公司 | Metal welded pipe joint and assemble-welding method |
| CN201373189Y (en) * | 2009-02-17 | 2009-12-30 | 深圳雅昌管业有限公司 | Metal welding pipe joint |
| CN203570221U (en) * | 2013-08-20 | 2014-04-30 | 天津钢管集团股份有限公司 | Quick connection end plug |
| CN204114458U (en) * | 2014-09-26 | 2015-01-21 | 天津钢管集团股份有限公司 | The shutoff end plug of tubing external pressure hermetic seal test |
-
2014
- 2014-09-26 CN CN201410504477.3A patent/CN104295853B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4513605A (en) * | 1982-01-20 | 1985-04-30 | Manfred Hawerkamp | Method and device for testing welds of thermoplastic parts |
| CN200950104Y (en) * | 2006-09-19 | 2007-09-19 | 宝山钢铁股份有限公司 | Tube blanking adapter for oil sleeve explosive experiment |
| CN101486130A (en) * | 2009-02-17 | 2009-07-22 | 深圳雅昌管业有限公司 | Metal welded pipe joint and assemble-welding method |
| CN201373189Y (en) * | 2009-02-17 | 2009-12-30 | 深圳雅昌管业有限公司 | Metal welding pipe joint |
| CN203570221U (en) * | 2013-08-20 | 2014-04-30 | 天津钢管集团股份有限公司 | Quick connection end plug |
| CN204114458U (en) * | 2014-09-26 | 2015-01-21 | 天津钢管集团股份有限公司 | The shutoff end plug of tubing external pressure hermetic seal test |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104295853B (en) | 2016-04-06 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20190619 Address after: No. 396 Jintang Highway, Dongli District, Tianjin 300301 Patentee after: Tianjin Steel Tube Manufacturing Co., Ltd. Address before: No. 396 Jintang Highway, Dongli District, Tianjin 300301 Patentee before: Tianjin Steel Pipe Group Co., Ltd. |