CN201731975U - Self-locking type steel pipe inner diameter sealing device - Google Patents

Self-locking type steel pipe inner diameter sealing device Download PDF

Info

Publication number
CN201731975U
CN201731975U CN2010201572857U CN201020157285U CN201731975U CN 201731975 U CN201731975 U CN 201731975U CN 2010201572857 U CN2010201572857 U CN 2010201572857U CN 201020157285 U CN201020157285 U CN 201020157285U CN 201731975 U CN201731975 U CN 201731975U
Authority
CN
China
Prior art keywords
nut
hollow
steel pipe
self
rubber ring
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
CN2010201572857U
Other languages
Chinese (zh)
Inventor
潘发贵
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.)
CHANGZHOU CITY JIANG YANG STAINLESS STEEL Co Ltd
Original Assignee
CHANGZHOU CITY JIANG YANG STAINLESS STEEL Co Ltd
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 CHANGZHOU CITY JIANG YANG STAINLESS STEEL Co Ltd filed Critical CHANGZHOU CITY JIANG YANG STAINLESS STEEL Co Ltd
Priority to CN2010201572857U priority Critical patent/CN201731975U/en
Application granted granted Critical
Publication of CN201731975U publication Critical patent/CN201731975U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model relates to a self-locking type steel pipe inner diameter sealing device, which comprises a hollow screw, wherein the hollow screw is orderly provided with a handle nut, a tension device and a locking nut, the tension device and the locking nut are fixed in a steel pipe, the tension device comprises a hollow nut, a rubber ring, a left conical block and a right conical block, the hollow nut is sleeved on the hollow screw, the rubber ring is fixedly connected on one end of the hollow screw, the left conical block is arranged between the handle nut and the hollow nut, the right conical block is arranged between the hollow nut and the rubber ring, conical parts of the left and the right conical blocks are respectively matched with the left end and the right end of the hollow nut, and the rubber ring is arranged between the conical blocks and the locking nut. The self-locking type steel pipe inner diameter sealing device has simple structure, simple dismounting, high efficacy, time and labor economization and excellent air sealing effect, does not need to fill water in steel pipes, and generates inner self-locking through outer threads of a self-expansion nut of the hollow nut and the inner walls of the steel pipes, thereby preventing from damaging sealing rings because of large inner pressure and unsafe factors and the like.

Description

Self-locking type steel pipe internal diameter closing device
Technical field
The utility model relates to a kind of water test unit, especially relates to a kind of self-locking type steel pipe internal diameter closing device.
Background technology
The hydraulic testing of stainless-steel pipe is the reliable a kind of method of inspection of steel pipe product inspection, and it can check steel pipe whether the defective of penetrability is arranged intuitively.At present, the old-fashioned hydraulic pressure closing device of general use mainly utilizes rubber seal to make the O-ring seal expansion arrive the purpose of closed port by pressing in the water, in use the dress folding is loaded down with trivial details, effect is low, useless power when useless, sealing effectiveness is bad, and then produces when the pressure testing of stainless-steel pipe water test unit and leak.
The utility model content
The technical problems to be solved in the utility model is: a kind of steel pipe generic port temporary stopping that is used for is provided, bears the self-locking type steel pipe internal diameter closing device of big pressure in the pipe.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of self-locking type steel pipe internal diameter closing device, comprise cored screw, be disposed with the handle nut on the cored screw, be fixed on swelling device and set nut in the steel pipe, swelling device comprises the hollow nut that is provided with on the cored screw that is enclosed within, be connected in the rubber ring of cored screw one end, be arranged on the left circular cone between handle nut and the hollow nut and be arranged on hollow nut and rubber ring between right circular cone, the tapering part of a left side circular cone and right circular cone respectively with hollow nut left end and right-hand member taper fit, rubber ring is between circular cone and set nut, cored screw one end connects water inlet with pressing machine, the other end changes into solid, make steel pipe two ends temporary stopping, thereby finish the hydraulic testing.
Hollow nut is formed a circle by three nut sheets, and pricks bungee at the outer snare of nut sheet.
Tie hollow nut in order can better to overlap, hollow nut is provided with annular groove, and described bungee is arranged in the groove.
For can be better and the self-locking of steel pipe inwall, the hollow nut outside surface be provided with external thread.
The beneficial effects of the utility model are, self-locking type steel pipe internal diameter closing device of the present utility model, device structure is simple, dismounting is simple, and the effect height is time saving and energy saving, aeroseal is effective, do not need to make to be full of water in the steel pipe, the external thread and the steel pipe inwall of the self-expanding nut by hollow nut produce inner self-locking, thereby have avoided owing to internal pressure is damaged O-ring seal and uneasy congruent factor greatly.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
1. cored screws among the figure, 2. handle nut, 3. swelling device, 32. rubber rings, 33. left circular cones, 34. right circular cones, 4. set nut, 5. bungee.
Embodiment
In conjunction with the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the synoptic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
Self-locking type steel pipe internal diameter closing device as shown in Figure 1, comprise cored screw 1, be disposed with handle nut 2 on the cored screw 1, be fixed on swelling device 3 and set nut 4 in the steel pipe, swelling device 3 comprises the hollow nut that is provided with on the cored screw 1 that is enclosed within, be connected in the rubber ring 32 of cored screw 1 one ends, be arranged on the left circular cone 33 between handle nut 2 and the hollow nut and be arranged on hollow nut and rubber ring 32 between right circular cone 34, the tapering part of left side circular cone 33 and right circular cone 34 and embedding hollow nut left end and right-hand member taper fit, rubber ring 32 is between right circular cone 34 and set nut 4.Hollow nut is formed a circle by three nut sheets, and pricks bungee 5 at the outer snare of nut sheet, and hollow nut is provided with annular groove, and bungee 5 is arranged in the groove.
Principle of work of the present utility model: bungee 5 is tightened hollow nut, three nut sheets of hollow nut are held tightly, when handle nut 2 extruding left circular cone 33, right circular cone 34 and set nuts 4, hollow nut is by the taper fit spreading between left circular cone 33 and the right circular cone 34, make the extruding of hollow nut and steel pipe inwall increase the friction force self-locking, right circular cone 34 and set nut 4 push rubber rings 32 simultaneously, make rubber ring 32 distortion, external diameter increases and the steel pipe inwall closely cooperates and produce sealing effectiveness.
The utility model self-locking type steel pipe internal diameter closing device can be done the steel pipe hydrostatic testing of different size by changing different hollow nut and rubber ring 32 external diameters.
With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the instructions, must determine its technical scope according to the claim scope.

Claims (4)

1. self-locking type steel pipe internal diameter closing device, it is characterized in that: comprise cored screw (1), be disposed with handle nut (2) on the described cored screw (1), be fixed on swelling device (3) and set nut (4) in the steel pipe, described swelling device (3) comprises the hollow nut that is provided with on the cored screw (1) that is enclosed within, be connected in the rubber ring (32) of cored screw (1) one end, be arranged on the left circular cone (33) between handle nut (2) and the hollow nut and be arranged on hollow nut and rubber ring (32) between right circular cone (34), the tapering part of a left side circular cone (33) and right circular cone (34) respectively with hollow nut left end and right-hand member taper fit, rubber ring (32) is positioned between right circular cone (34) and the set nut (4).
2. self-locking type steel pipe internal diameter closing device according to claim 1 is characterized in that: described hollow nut is formed a circle by three nut sheets, and pricks bungee (5) at the outer snare of nut sheet.
3. self-locking type steel pipe internal diameter closing device according to claim 1, it is characterized in that: described hollow nut is provided with annular groove, and described bungee (5) is arranged in the groove.
4. self-locking type steel pipe internal diameter closing device according to claim 1 is characterized in that: described hollow nut outside surface is provided with external thread.
CN2010201572857U 2010-04-09 2010-04-09 Self-locking type steel pipe inner diameter sealing device Expired - Fee Related CN201731975U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201572857U CN201731975U (en) 2010-04-09 2010-04-09 Self-locking type steel pipe inner diameter sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201572857U CN201731975U (en) 2010-04-09 2010-04-09 Self-locking type steel pipe inner diameter sealing device

Publications (1)

Publication Number Publication Date
CN201731975U true CN201731975U (en) 2011-02-02

Family

ID=43523133

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010201572857U Expired - Fee Related CN201731975U (en) 2010-04-09 2010-04-09 Self-locking type steel pipe inner diameter sealing device

Country Status (1)

Country Link
CN (1) CN201731975U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102530710A (en) * 2012-02-15 2012-07-04 深圳市大眼界光电科技有限公司 Lock-type hoisting device
CN102937506A (en) * 2012-11-22 2013-02-20 浙江久立特材科技股份有限公司 Inlet sealing device for steel pipe airtight tests

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102530710A (en) * 2012-02-15 2012-07-04 深圳市大眼界光电科技有限公司 Lock-type hoisting device
CN102937506A (en) * 2012-11-22 2013-02-20 浙江久立特材科技股份有限公司 Inlet sealing device for steel pipe airtight tests
CN102937506B (en) * 2012-11-22 2014-12-10 浙江久立特材科技股份有限公司 Inlet sealing device for steel pipe airtight tests

Similar Documents

Publication Publication Date Title
CN203396572U (en) Multi-station valve pressure test device
CN202256036U (en) Sealing device for pressure test of pipeline
CN203426644U (en) Special device for assembling pipelines
CN201731975U (en) Self-locking type steel pipe inner diameter sealing device
CN102809018A (en) Pipe orifice seal device for pipe hydraulic test
CN202176875U (en) Thimble leakage blocking body and pipeline rush-repair fixture for pipeline rush-repair
CN102773815A (en) Weld assembly coaxiality fixture
CN203863628U (en) Distance expander for pipe flanges
CN204171273U (en) A kind of half tooth top puts device
CN201302525Y (en) Water-pressure test unit for boiler header pipe joint
CN206344045U (en) A kind of easily assembling cardboard tube fixing device rolled up for overlay film
CN206320446U (en) A kind of fast connecting device of pipelines
CN202108038U (en) Solid drainage body used for processing soft soil foundation with preloading method
CN206802577U (en) A kind of regulating flange structure
CN202733322U (en) Pipe mouth sealing device used for pipe hydraulic testing
CN203275189U (en) Fixture for hitting and pressing PE (poly ethylene) flexible pipe
CN207248644U (en) U heat exchange structure for pressure test
CN202580378U (en) Internal expanding type sealing connection device for pipeline pressure test
CN206348226U (en) A kind of nut stretcher
CN202834565U (en) Pressure leak-blocking tool for gathering pipeline
CN201293164Y (en) Quickly connecting and plugging pipe joint
CN206036505U (en) Novel blind flange
CN203151784U (en) Split-type pressure ring
CN203273080U (en) High-pressure conveying pipeline
CN203823399U (en) Mounting device for sensor on small diameter pipe

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110202

Termination date: 20130409

C17 Cessation of patent right