CN201731975U - Self-locking type steel pipe inner diameter sealing device - Google Patents
Self-locking type steel pipe inner diameter sealing device Download PDFInfo
- 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
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- nut
- steel pipe
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- self
- rubber ring
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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
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.
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)
| 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 |
-
2010
- 2010-04-09 CN CN2010201572857U patent/CN201731975U/en not_active Expired - Fee Related
Cited By (3)
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110202 Termination date: 20130409 |