CN205298943U

CN205298943U - Shutoff pig

Info

Publication number: CN205298943U
Application number: CN201620018906.0U
Authority: CN
Inventors: 石建设; 石岩
Original assignee: TIANJIN GREENTSING PIPELINE TECHNOLOGY Co Ltd
Current assignee: TIANJIN GREENTSING PIPELINE TECHNOLOGY Co Ltd
Priority date: 2016-01-11
Filing date: 2016-01-11
Publication date: 2016-06-08
Anticipated expiration: 2026-01-11

Abstract

The utility model discloses a shutoff pig, be in including center tube and setting at least one sealed bladder of center tube outer wall, sealed bladder is equipped with inside cavity, inside cavity intercommunication has the honeycomb duct. Be equipped with bag heart hoop, built -in cover and side guide on the center tube outer wall, built -in cover both ends are fixed with bag heart hoop and side guide cooperation respectively sealed bladder's both ends, built -in sheatheeing in is equipped with the gas pocket. Its beneficial effect lies in: shutoff pig isolation technique compares with tradition adoption butter wall isolation technique, can greatly reduce the operating risk of getting angry, simultaneously owing to need not bag under the trompil, has reduced construction cost.

Description

Closure wiper

Technical field

This utility model relates to pipe-line manufacture field, blocks wiper particularly to one.

Background technology

At present, the pipelines such as oil, natural gas line, chemical industry not yet use special closure wiper, during the weld jobs such as rushing to repair for pipeline dimension breaks manages, relocate, main employing: 1. first capsule pipe nipple perforate under the welding welding of the front end of disconnected pipe, 2. enter air bag under in the pipeline section that needs are got angry and inflate, 3. butter wall is piled up in the outside of air bag, the oil in pipeline or oil-gas formation is closed isolation, carries out weld job after 4. carrying out Pipe Cutting operation again; 5. air bag loses heart and takes out.

But, such scheme Shortcomings part, first, there is thawing risk and cause that oil gas leakage causes security incident in butter wall under long-time high-temperature condition; Secondly, because of under the air bag that enters to take out, it is necessary to capsule pipe nipple perforate under welding on pipeline, increase construction cost, the body of pipeline leave unnecessary pipe fitting, while also leave accident potential.

In view of this, special proposition this utility model.

Utility model content

The technical problems to be solved in the utility model is in that to overcome the deficiencies in the prior art, it is provided that the closure wiper that a kind of simple in construction, coefficient easy to use, safe are high.

For solving above-mentioned technical problem, the basic conception of this utility model employing technical scheme is:

Closure wiper, including central canal and at least one sealed bladder being arranged on described central canal outer wall; Described sealed bladder is provided with internal cavities; Described internal cavities is communicated with mozzle.

Above-mentioned closure wiper, described central canal outer wall is provided with capsule heart hoop, built-in set and side guide; Described built-in set two ends coordinate the two ends of fixing described sealed bladder respectively with capsule heart hoop and side guide; Described built-in putting is provided with pore.

Above-mentioned closure wiper, described sealed bladder internal cavities also connects with equilibrated valve; Described equilibrated valve is arranged on described capsule heart hoop.

Above-mentioned closure wiper, described sealed bladder at least two; The internal cavities connection of different sealing capsule and equilibrated valve are at least one, and described equilibrated valve is arranged on the rear end of closure wiper.

Above-mentioned closure wiper, described equilibrated valve is one; Equilibrated valve is disposed therein a sealed bladder place.

Above-mentioned closure wiper, also includes the guiding leather cup at centrally disposed pipe two ends, also sets separation sleeve between the capsule heart hoop of described guiding leather cup and correspondence.

Above-mentioned closure wiper, is additionally provided with O RunddichtringO between described side guide and capsule heart hoop.

Above-mentioned closure wiper, described mozzle is provided with non-return intake valve.

Above-mentioned closure wiper, the pressure side of inflating of described mozzle is provided with anti-raming.

After adopting technique scheme, this utility model compared with prior art has the advantages that

Closure wiper isolation technology, compared with conventionally employed butter wall isolation technology, can greatly reduce fire operation risk, simultaneously because without capsule under perforate, reduce construction cost.

Accompanying drawing explanation

Fig. 1 be this utility model closure wiper partly cut open structural representation.

In above-mentioned accompanying drawing, 1, anti-ram; 2, mozzle; 3, non-return intake valve; 7, central canal; 12, guiding leather cup; 13, separation sleeve; 15, side guide; 16, interior spider; 17, sealed bladder; 18, equilibrated valve; 19, capsule heart hoop; 20, O RunddichtringO.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, to help understanding content of the present utility model.

As it is shown in figure 1, this utility model provides a kind of closure wiper, including central canal and the sealed bladder being arranged on described central canal outer wall; Described sealed bladder is provided with internal cavities; Described internal cavities is communicated with mozzle. At pipeline tapping end, closure wiper of the present utility model is fed through appointment position during use, makes sealed bladder expand (such as making nitrogen pressure reach 0.2MPa) to realize and pipeline interference seal by mozzle nitrogen injection.

For making mozzle inflation more smooth and easy, mozzle is provided with non-return intake valve. And in order to the air pressure damaged on end preventing that clashing into collides with and making mozzle is bad, the pressure side of inflating at mozzle is provided with anti-raming.

The sealing realizing capsule heart hoop is realized by following structure: central canal outer wall is provided with capsule heart hoop, built-in set and side guide; Described built-in set two ends coordinate the two ends of fixing described sealed bladder respectively with capsule heart hoop and side guide; Described built-in putting is provided with pore, and the effect of pore is in that to ensure that the fluid from mozzle enters sealed bladder inner chamber, it is achieved Expansion sealing. Capsule heart hoop on central canal supports carrier with built-in set for fixed installation sealed bladder; Clamping screw pretightning force acts on side guide fit sealing capsule; It is additionally provided with O RunddichtringO, it is to avoid sealed bladder leaks gas between described side guide and capsule heart hoop.

In closure wiper of the present utility model, described sealed bladder internal cavities also connects with equilibrated valve; Described equilibrated valve is arranged on described capsule heart hoop, and to avoid, sealed bladder chamber pressure is excessive causes damage. Described sealed bladder is two, and the internal cavities connection of sealed bladder and equilibrated valve are arranged on a sealed bladder place, so, it is possible to save cost, and better manages. Described equilibrated valve is arranged on the rear end (to block the direction advanced under wiper differential pressure action in pipeline for front, rear end is not install anti-one end ramed in the present embodiment) of described closure wiper.

In order to ensure that closure wiper is walked at pipeline internal stable, also including the guiding leather cup at centrally disposed pipe two ends, also set separation sleeve between the capsule heart hoop of described guiding leather cup and correspondence, when pipeline internal is walked, righting wiper is responsible for by guiding leather cup.

The above is only preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, under the premise without departing from this utility model principle; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims

1. closure wiper, including central canal and at least one sealed bladder being arranged on described central canal outer wall; It is characterized in that, described sealed bladder is provided with internal cavities; Described internal cavities is communicated with mozzle.

2. closure wiper according to claim 1, it is characterised in that described central canal outer wall is provided with capsule heart hoop, built-in set and side guide; Described built-in set two ends coordinate the two ends of fixing described sealed bladder respectively with capsule heart hoop and side guide; Described built-in putting is provided with pore.

3. closure wiper according to claim 2, it is characterised in that described sealed bladder internal cavities also connects with equilibrated valve; Described equilibrated valve is arranged on described capsule heart hoop.

4. closure wiper according to claim 3, it is characterised in that described sealed bladder at least two; The internal cavities connection of different sealing capsule and equilibrated valve are at least one, and described equilibrated valve is arranged on the rear end of closure wiper.

5. closure wiper according to claim 4, it is characterised in that described equilibrated valve is; Equilibrated valve is disposed therein a sealed bladder place.

6. closure wiper according to claim 2, it is characterised in that also include the guiding leather cup at centrally disposed pipe two ends, also sets separation sleeve between the capsule heart hoop of described guiding leather cup and correspondence.

7. closure wiper according to claim 2, it is characterised in that be additionally provided with O RunddichtringO between described side guide and capsule heart hoop.

8. closure wiper according to claim 1, it is characterised in that be provided with non-return intake valve on described mozzle.

9. closure wiper according to claim 1, it is characterised in that the pressure side of inflating of described mozzle is provided with anti-raming.