CN102434754B - Airbag piston (for slurry shields) for blocking pipes - Google Patents
Airbag piston (for slurry shields) for blocking pipes Download PDFInfo
- Publication number
- CN102434754B CN102434754B CN2010102969647A CN201010296964A CN102434754B CN 102434754 B CN102434754 B CN 102434754B CN 2010102969647 A CN2010102969647 A CN 2010102969647A CN 201010296964 A CN201010296964 A CN 201010296964A CN 102434754 B CN102434754 B CN 102434754B
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- China
- Prior art keywords
- air bag
- airbag
- piston
- rigid support
- front cover
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- 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
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Abstract
The invention discloses an airbag piston (for slurry shields) for blocking pipes, which comprise a front end cover and a first airbag, wherein the front end cover is provided with a charging connector connected with the first airbag, the inside of the first airbag is provided with a rigid support, the first airbag is fixedly connected with the front end cover and the rigid support, and the front end cover is provided with a push-pull bar linker. When being pulled forwards or drawn back, the airbag piston disclosed by the invention is in a no-air-pressure flabby state; and when the airbag piston is pulled forwards to a required position, an air pressure is injected into an airbag from the outside, so that because of the air pressure, the airbag piston is expanded, and a great friction force is produced between the airbag piston and the inner wall of a steel tube so as to effectively seal slurry.
Description
Technical field
The present invention relates to tunnel piercing slurry shield technical field, particularly be used in a kind of slurry shield sealing
Stifled muddy water pipeline easily advances the air bag piston that easily goes out.
Background technique
The major diameter slurry balance shield injects certain pressure water by ground and produces certain balance pressure be unlikely to cave in to guarantee the place ahead soil layer between cutterhead and soil layer when tunnel piercing, and press water is extracted the dilution of the earth of driving to be transported to ground and to carry out mud-water separation out by slurry pump simultaneously.Because the shield structure constantly advances, inject the steel pipe of the anterior press water of shield structure and discharge the steel pipe constantly access of mud to ground by shield structure head by ground, if when accessing new steel pipe, the steel pipe flange connected is separated, a large amount of muddy water in steel pipe certainly will will all flow into tunnel.At present, part unit in charge of construction adopts a kind of sponge balloon pipe connector of import, utilize press water that the sponge sacculus is advanced to the steel pipe head that front end will be taken apart, rely on the frictional force of sponge sacculus that the pipeline head is sealed, to stop the muddy water in pipeline to flow out, after new steel pipe connects, the press water of recycling bypass back into home position by the sponge sacculus.But the frictional force produced during because of the sponge inflation is limit, often pipeline can not be sealed up reliably, if the frictional force produced while expanding is too large, the sponge sacculus can not successfully advance and push back again, it can't be back into to home position again when sometimes, the sponge sacculus is advanced to the pipeline head, will produce very burden this time.Therefore, lack a kind of plugging effect and well easily advance again the blocking device that easily goes out.
Summary of the invention
The purpose of this invention is to provide the air bag piston of a kind of slurry shield with blocking pipe, overcome above-mentioned defect of the prior art.
The present invention is solved by the following technical solutions:
The air bag piston of blocking pipe for a kind of slurry shield of the present invention, comprise front cover and the first air bag, front cover is provided with a charging air inlet and is connected with described the first air bag, be provided with a rigid support in described the first air bag, described the first air bag is fixedly connected with described front cover and rigid support, also is provided with the pull bar connector on described front cover.
The present invention also comprises that inside is provided with the second air bag of rigid support, and the second air bag is fixedly connected with by an intermediate support with described the first air bag, and the second air bag also is connected with described charging air inlet.
The present invention also comprises a rear end cover, is placed in the second air bag rear and is fixedly connected with the rigid support in described the second air bag.
Front cover of the present invention is provided with upper saw pulley, and its effect is to play guiding when long and hold steel pipe and do not make its bending sagging when promoting air bag piston mobile push rod steel pipe in pipeline.
Upper saw pulley of the present invention is four and evenly is located at described front cover front end.
Charging air inlet of the present invention is the charging air inlet with rapid pipe joint.
Rigid support of the present invention and intermediate support are made by the MC nylon material.
By above technological scheme, this air bag piston when advancing or returning in without the air pressure relaxed state, when being advanced to desired location, from the bound pair air bag inject air pressure, air pressure expands air bag to produce huge frictional force and effectively seal mud with steel pipe inner wall.
The accompanying drawing explanation
The structural drawing of the air bag piston of blocking pipe for Fig. 1 slurry shield of the present invention
Embodiment
As shown in Figure 1, the air bag piston of blocking pipe for slurry shield of the present invention, comprise front cover 8 and the first air bag 2, front cover 8 is provided with a charging air inlet 3 and is connected with the first air bag 2, the first air bag interior 2 is provided with rigid support 1, the first air bag 2 and is fixedly connected with front cover 8 and rigid support 1, also is provided with pull bar connector 9 on front cover 8, the push rod connector can be connected with the push rod of stretching device, and the automatic control by hydraulic system drives the promotion of push rod or retracts and drives this air pocket motion.Also comprise that the second air bag 6, the second air bags 6 that inside is provided with rigid support are fixedly connected with by an intermediate support 5 with the first air bag 2, the second air bag 6 also communicates with charging air inlet 3.Also comprise a rear end cover 7, be placed in the second air bag 6 rears and be fixedly connected with the rigid support in the second air bag, this rear end cover 7 plays the effect of protection air bag, avoids the silt in pipeline to puncture air bag.Charging air inlet 3, with rapid pipe joint, is connected inflation when outside gas tube is inserted on this charging air inlet, close this charging air inlet while pulling up.
Above-mentioned rigid support 4 and intermediate support 5 are all made by the MC nylon material, and its periphery is less than the internal diameter of wanted blocking pipe 4, can be in the interior light movement of pipeline 4.Evenly be provided with 4 upper saw pulleys in front cover 8, rear end cover 7 peripheries, those upper saw pulleys can move along above-mentioned inner-walls of duct in the push rod movable type, when the push rod steel pipe advances when elongated, four upper saw pulleys progressively evenly slide and hold steel pipe and be unlikely to crooked sagging under the drive of nylon thread.
When this air bag piston is delivered to desired location by stretching device, from the bound pair air bag inject air pressure, air bag is expanded air pressure and inner-walls of duct produces huge frictional force and effectively seals mud, after pipeline connects, then the gas of laying down air bag the inside retracts this air bag piston to remove by stretching device and delivers to the reset condition position.
Claims (6)
1. the air bag piston of blocking pipe for a slurry shield, it is characterized in that, comprise front cover and the first air bag, front cover is provided with a charging air inlet and is connected with described the first air bag, be provided with a rigid support in described the first air bag, described the first air bag is fixedly connected with described front cover and rigid support, also is provided with the pull bar connector on described front cover; Also comprise that inside is provided with the second air bag of rigid support, the second air bag is fixedly connected with by an intermediate support with described the first air bag, and the second air bag also communicates with described charging air inlet.
2. air bag piston according to claim 1, is characterized in that, also comprises a rear end cover, is placed in the second air bag rear and is fixedly connected with the rigid support in described the second air bag.
3. air bag piston according to claim 1, is characterized in that, described front cover is provided with upper saw pulley.
4. air bag piston according to claim 3, is characterized in that, described upper saw pulley is four and evenly is located at described front cover front end.
5. air bag piston according to claim 1, is characterized in that, described charging air inlet is the charging air inlet with rapid pipe joint.
6. air bag piston according to claim 1, is characterized in that, described rigid support and intermediate support are made by the MC nylon material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102969647A CN102434754B (en) | 2010-09-29 | 2010-09-29 | Airbag piston (for slurry shields) for blocking pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102969647A CN102434754B (en) | 2010-09-29 | 2010-09-29 | Airbag piston (for slurry shields) for blocking pipes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102434754A CN102434754A (en) | 2012-05-02 |
| CN102434754B true CN102434754B (en) | 2013-12-04 |
Family
ID=45982989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102969647A Expired - Fee Related CN102434754B (en) | 2010-09-29 | 2010-09-29 | Airbag piston (for slurry shields) for blocking pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102434754B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574219B (en) * | 2012-07-20 | 2015-08-26 | 中国石油化工股份有限公司 | The input advancing means of flux leakage detector in a kind of pipeline |
| CN103148313B (en) * | 2013-04-01 | 2015-08-19 | 中国铁建重工集团有限公司 | A kind of blocking device of shield machine pipeline joint and method |
| CN106764238B (en) * | 2017-02-24 | 2017-12-26 | 江苏海事职业技术学院 | A kind of self-locking pipeline port is met an urgent need plugging device |
| CN108662347B (en) * | 2017-03-31 | 2019-12-27 | 国核电站运行服务技术有限公司 | Air bag pipeline plugging device |
| CN111120771B (en) * | 2020-01-12 | 2021-05-14 | 王伟峰 | Plugging robot in pipeline |
| CN113090851B (en) * | 2021-03-12 | 2022-03-18 | 长江生态环保集团有限公司 | Auxiliary tool for air bag plugging during detection and repair of drainage pipe network and use method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3802464A (en) * | 1972-08-14 | 1974-04-09 | Sta Rite Industries | Liquid pressure tank |
| DE3403890C1 (en) * | 1984-02-04 | 1985-03-14 | Hochtief Ag Vorm. Gebr. Helfmann, 4300 Essen | Conveyor device for a tunneling machine for tunnels and lines |
| CN2658240Y (en) * | 2003-11-12 | 2004-11-24 | 天津市排水管理处 | Traction air stopper |
| CN2926739Y (en) * | 2006-04-30 | 2007-07-25 | 杨红星 | Three-stage cut-off air bag for pipeline |
| CN200949729Y (en) * | 2006-09-19 | 2007-09-19 | 常宏德 | Modified pipeline sealing air-bag |
| CN201133548Y (en) * | 2007-11-07 | 2008-10-15 | 北京和升达信息安全技术有限公司 | Device capable of freely walking in pipeline |
| CN201301714Y (en) * | 2008-12-01 | 2009-09-02 | 上海建工（集团）总公司 | Water-stopping device for procedure of exiting starting well or entering receiving well of tunneling machine tool |
-
2010
- 2010-09-29 CN CN2010102969647A patent/CN102434754B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102434754A (en) | 2012-05-02 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20140929 |
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