CN201397272Y - Thin walled pipe external pressure instability testing unit - Google Patents

Thin walled pipe external pressure instability testing unit Download PDF

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Publication number
CN201397272Y
CN201397272Y CN2009200329263U CN200920032926U CN201397272Y CN 201397272 Y CN201397272 Y CN 201397272Y CN 2009200329263 U CN2009200329263 U CN 2009200329263U CN 200920032926 U CN200920032926 U CN 200920032926U CN 201397272 Y CN201397272 Y CN 201397272Y
Authority
CN
China
Prior art keywords
pressure
hole
cylinder
threeway
plug
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.)
Expired - Fee Related
Application number
CN2009200329263U
Other languages
Chinese (zh)
Inventor
张震
董继先
王博
鲁剑啸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaanxi University of Science and Technology
Original Assignee
Shaanxi University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shaanxi University of Science and Technology filed Critical Shaanxi University of Science and Technology
Priority to CN2009200329263U priority Critical patent/CN201397272Y/en
Application granted granted Critical
Publication of CN201397272Y publication Critical patent/CN201397272Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a thin walled pipe external pressure instability testing unit, comprising a cylinder 2, a flange cover 1, two holes, a digital display pressure gauge 4 and a tee 16, wherein the flange cover 1 is matched with the cylinder 2 and is arranged on the cylinder; the two holes are arranged on the flange cover 1; the digital display pressure gauge 4 is arranged on the hole 13;and the tee 16 is arranged on the hole 14. The three ports of the tee 16 are respectively provided with an installation pressure switch 5, a connection hose 6 and communicated with the atmosphere. The hose 6 is fixedly communicated with the hole of a plug 7. The bottom of the inside of the cylinder 2 is provided with a blind end plug 9. The two plugs are directly pipes 8 to be tested. The lower part of the cylinder 2 is provided with a hole 15. The hole 15 is externally connected with a tee 10. Two external ends of the tee 10 are respectively provided with a pressure relief valve 11, a valve12 and a pressure source 18. When in operation, the pressure source pressurized to the cylinder 2, and the volume of the pipe 8 to be tested will be decreased due to the instable external pressure. The pressure switch 5 is touched when the air is exhausted outside through the hose 6. The signal is sent to the digital display pressure gauge 4 to display and read through the pressure switch 5. The thin walled pipe external pressure instability testing unit has the characteristics of simple structure and accurate measurement.

Description

A kind of thin-wall pipe external pressure unstability test unit
Technical field
The utility model relates to a kind of pressure testing device, particularly a kind of thin-wall pipe external pressure unstability test unit.
Background technology
Thin-wall pipe is widely used in daily life at present, and much pipe fitting is operated in outer pressure condition, and it bears the limited in one's ability of external pressure, and design formula is an experimental formula also often, can not be found the solution accurately, brings a lot of inconvenience for the application of engineering.Bear external pressure mechanics performance detection device owing to lack it, because external pressure effect meeting causes the unexpected external pressure unstability of pipe fitting, have Unpredictability usually, engineering is caused damage, also become a kind of potential safety hazard simultaneously.
Summary of the invention
The purpose of this utility model is in order to solve the external pressure destabilization problems that pipe fitting exists, a kind of pipe fitting external pressure device for detecting performance to be provided, having simple in structure, measurement characteristic of accurate.
In order to achieve the above object, the technical solution adopted in the utility model is: a kind of thin-wall pipe external pressure unstability test unit, comprise a cylindrical shell 2, it on the cylindrical shell 2 suitable with it blind flange 1, on the blind flange 1 porose 13,14, install on the hole 13 and statistics have shown tensimeter 4, threeway 16 is installed on the hole 14, one end of threeway 16 is equipped with pressure switch 5, the signal output part of pressure switch 5 shows that with numeral the signal end of tensimeter 4 is connected, and the other end of threeway 16 and cylindrical shell 2 interior flexible pipes 6 are connected, and the side of threeway 16 communicates with atmosphere, flexible pipe 6 fixedly is communicated with the hole of plug 7, the inner bottom of cylindrical shell 2 is provided with cecum plug 9, has hole 15 in cylindrical shell 2 bottoms, and hole 15 is externally connected with threeway 10, it is that live end is equipped with valve 12 and pressure source 18 that 101 ends of threeway 10 are equipped with blowdown valve 11,102 ends.
Because the utility model setting statistics have shown tensimeter 4, so can intuitively, accurately show the concrete numerical value of pressure-bearing.
Description of drawings
Accompanying drawing is a structure principle chart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present utility model and principle of work are described in detail.
With reference to accompanying drawing, a kind of thin-wall pipe external pressure unstability test unit, comprise a cylindrical shell 2, it on the cylindrical shell 2 suitable with it blind flange 1, blind flange 1 is to seal by the O-ring seal 3 that is placed on the cylindrical shell 2, be connected and fixed with bolt 17, on the blind flange 1 porose 13,14, install on the hole 13 and statistics have shown tensimeter 4, threeway 16 is installed on the hole 14, and an end of threeway 16 is equipped with pressure switch 5, and the signal output part of pressure switch 5 shows that with numeral the signal end of tensimeter 4 is connected, flexible pipe 6 in the other end of threeway 16 and the cylindrical shell 2 is connected, the side of threeway 16 communicates with atmosphere, and flexible pipe 6 fixedly is communicated with the hole of plug 7, and the inner bottom of cylindrical shell 2 is provided with cecum plug 9, it between plug 7 and cecum plug 9 pipe fitting 8 to be measured, the junction has hole 15 with lute 19 sealings in cylindrical shell 2 bottoms, and hole 15 is externally connected with threeway 10, it is that live end is equipped with valve 12 and pressure source 18 that 101 ends of threeway 10 are equipped with blowdown valve 11,102 ends.
Principle of work of the present utility model is: the pipe fitting to be measured 8 of intercepting certain-length, with the two ends connection plug 7 and 19 sealings of cecum plug 9 usefulness lutes of pipe fitting 8 to be measured, wherein plug 7 communicates with atmosphere by flexible pipe 6 and threeway 16, makes to be operated in outer pressure condition.Pressure-bearing pressure according to the pipe fitting of estimating in advance, pressure source 18 pressure are brought up to pipe fitting pressure-bearing pressure 1.2-1.3 doubly, close blowdown valve 11, open valve 12, rising along with cylindrical shell 2 pressure, pipe fitting 8 to be measured can be because the external pressure unstability, the volume of pipe fitting 8 to be measured reduces suddenly during unstability, touch pressure switch 5 simultaneously by the outside rapidly exhaust of flexible pipe 6, pressure switch 5 signal is reached that numeral shows tensimeter 4 and with signal latch in numeral shows tensimeter 4, show tensimeter 4 by numeral, just can read the concrete numerical value of pressure that pipe fitting bears external pressure; Test is finished, and valve-off 12 is opened blowdown valve 11 and carried out pressure release, opens blind flange 1 after pressure release is finished, and takes out pipe fitting 8 to be measured.
The utility model also can be as the experiment teaching instrument of pressure vessel Major.

Claims (2)

1, a kind of thin-wall pipe external pressure unstability test unit, comprise a cylindrical shell (2), it is characterized in that, it on the cylindrical shell (2) suitable with it blind flange (1), blind flange (1) is gone up porose (13), (14), hole (13) go up to be installed and be statistics have shown tensimeter (4), threeway (16) is installed on the hole (14), one end of threeway (16) is equipped with pressure switch (5), the signal output part of pressure switch (5) shows that with numeral the signal end of tensimeter (4) is connected, flexible pipe (6) in the other end of threeway (16) and the cylindrical shell (2) is connected, threeway (16) side communicates with atmosphere, flexible pipe (6) fixedly is communicated with the hole of plug (7), the inner bottom of cylindrical shell (2) is provided with cecum plug (9), has hole (15) in cylindrical shell (2) bottom, and hole (15) are externally connected with threeway (10), (101) end of threeway (10) is equipped with blowdown valve (11), and (102) end is equipped with valve (12) and pressure source (18) for live end.
2, a kind of thin-wall pipe external pressure unstability test unit according to claim 1 is characterized in that, is pipe fitting to be measured (8) between plug (7) and cecum plug (9), and the junction seals with lute (19).
CN2009200329263U 2009-05-04 2009-05-04 Thin walled pipe external pressure instability testing unit Expired - Fee Related CN201397272Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200329263U CN201397272Y (en) 2009-05-04 2009-05-04 Thin walled pipe external pressure instability testing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009200329263U CN201397272Y (en) 2009-05-04 2009-05-04 Thin walled pipe external pressure instability testing unit

Publications (1)

Publication Number Publication Date
CN201397272Y true CN201397272Y (en) 2010-02-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009200329263U Expired - Fee Related CN201397272Y (en) 2009-05-04 2009-05-04 Thin walled pipe external pressure instability testing unit

Country Status (1)

Country Link
CN (1) CN201397272Y (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102426142A (en) * 2011-09-14 2012-04-25 西安石油大学 Mechanics experiment system apparatus and experimental method for external pressure deformation of tubing
CN102564859A (en) * 2011-12-27 2012-07-11 浙江大学 Instability test device of external pressure vessel
CN104678208A (en) * 2013-12-03 2015-06-03 中国科学院沈阳自动化研究所 Device for comparing deep-sea water-tight connector performance
CN111169791A (en) * 2018-11-12 2020-05-19 宁波精酿谷科技有限公司 Go out wine pipe subassembly and flexible packaging bag subassembly

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102426142A (en) * 2011-09-14 2012-04-25 西安石油大学 Mechanics experiment system apparatus and experimental method for external pressure deformation of tubing
CN102426142B (en) * 2011-09-14 2014-01-29 西安石油大学 Mechanics experiment system apparatus and experimental method for external pressure deformation of tubing
CN102564859A (en) * 2011-12-27 2012-07-11 浙江大学 Instability test device of external pressure vessel
CN104678208A (en) * 2013-12-03 2015-06-03 中国科学院沈阳自动化研究所 Device for comparing deep-sea water-tight connector performance
CN104678208B (en) * 2013-12-03 2017-12-19 中国科学院沈阳自动化研究所 A kind of device for being used to compare deep-sea watertight performance of connector
CN111169791A (en) * 2018-11-12 2020-05-19 宁波精酿谷科技有限公司 Go out wine pipe subassembly and flexible packaging bag subassembly

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100203

Termination date: 20100504