CN102434754A - Airbag piston (for slurry shields) for blocking pipes - Google Patents
Airbag piston (for slurry shields) for blocking pipes Download PDFInfo
- Publication number
- CN102434754A CN102434754A CN2010102969647A CN201010296964A CN102434754A CN 102434754 A CN102434754 A CN 102434754A CN 2010102969647 A CN2010102969647 A CN 2010102969647A CN 201010296964 A CN201010296964 A CN 201010296964A CN 102434754 A CN102434754 A CN 102434754A
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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.)
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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, be used in particularly a kind of slurry shield sealing
Stifled muddy water pipeline is prone to the air bag piston that into is prone to.
Background technique
The major diameter slurry balance shield produces certain balance pressure through ground injection certain pressure water and is unlikely to cave in to guarantee the place ahead soil layer between cutterhead and soil layer when tunnel piercing, the while press water is transported to ground with the earth dilution of tunneling through the slurry pump extraction and carries out mud-water separation.Because the shield structure constantly advances; The steel pipe that is injected shield structure front portion press water by ground reaches the constantly access of steel pipe of being discharged mud to ground by shield structure head; If the steel pipe flange that when inserting new steel pipe, will connect separates, a large amount of muddy water in the steel pipe certainly will be with all flowing into the tunnel.At present; Part unit in charge of construction adopts a kind of sponge sacculus formula pipe connector of import; Promptly 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, flow out to stop the muddy water in the pipeline; After new steel pipe connects, utilize the press water of bypass that the sponge sacculus is back into the home position again.But the frictional force that is produced during because of the sponge inflation is limit; Often can not pipeline be sealed up reliably; If the frictional force that is produced when expanding is too big; The sponge sacculus can not successfully advance and push back again, can't it be back into the home position again when back sponge sacculus is advanced to the pipeline head sometimes, and will produce very burden this time.Therefore, lack the well blocking device that goes out of Yi Jinyi again of a kind of plugging effect.
Summary of the invention
The purpose of this invention is to provide the air bag piston of a kind of slurry shield, overcome above-mentioned defective of the prior art with blocking pipe.
The present invention adopts following technological scheme to solve:
A kind of slurry shield of the present invention is with the air bag piston of blocking pipe; Comprise the front cover and first air bag; Front cover is provided with a charging air inlet and links to each other with said first air bag; Be provided with a rigid support in said first air bag, said first air bag is fixedly connected with said front cover and rigid support, also is provided with the pull bar connector on the said front cover.
The present invention comprises that also inside is provided with second air bag of rigid support, and second air bag is fixedly connected through an intermediate support with said first air bag, and second air bag also links to each other with said charging air inlet.
The present invention also comprises a rear end cover, places the second air bag rear and is fixedly connected with rigid support in said second air bag.
Front cover according to the 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 promote push rod steel pipe that the air bag piston moves in pipeline.
Upper saw pulley according to the invention is four and evenly is located at said front cover front end.
Charging air inlet according to the invention is the charging air inlet of band rapid pipe joint.
Rigid support according to the invention and intermediate support are processed by the MC nylon material.
Through above technological scheme, this air bag piston is in no air pressure relaxed state when advancing or returning, and when being advanced to desired location, injects air pressure from outer bound pair air bag, and air pressure makes airbag inflation and steel pipe inwall produce huge frictional force and seal mud effectively.
Description of drawings
Fig. 1 slurry shield of the present invention is with the air bag structure of piston figure of blocking pipe
Embodiment
As shown in Figure 1, slurry shield of the present invention comprises the front cover 8 and first air bag 2 with the air bag piston of blocking pipe; Front cover 8 is provided with a charging air inlet 3 and links to each other with first air bag 2; First air bag interior 2 is provided with a 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 the front cover 8; The push rod connector can link to each other with the push rod of stretching device, the promotion of the automatic controlling and driving push rod through hydraulic system or retract and drive the motion of this air bag.Comprise that also second air bag, 6, the second air bags 6 that inside is provided with rigid support are fixedly connected through an intermediate support 5 with first air bag 2, second air bag 6 also communicates with charging air inlet 3.Also comprise a rear end cover 7, place second air bag, 6 rears and be fixedly connected that this rear end cover 7 plays the effect of protection air bag, avoids the silt in the pipeline to puncture air bag with rigid support in second air bag.Charging air inlet 3 has rapid pipe joint, connects inflation when outside gas tube is inserted on this charging air inlet, closes this charging air inlet when pulling up.
Above-mentioned rigid support 4 and intermediate support 5 are all processed by the MC nylon material, and its periphery can easily be moved in pipeline 4 less than the internal diameter of want blocking pipe 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 under the drive of nylon thread and hold steel pipe and be unlikely to crooked sagging.
When this air bag piston is delivered to desired location through stretching device; Inject air pressure from outer bound pair air bag; Air pressure makes airbag inflation and inner-walls of duct produce huge frictional force and seals mud effectively; After pipeline connected, the gas of laying down the air bag the inside again retracts this air bag piston to remove through stretching device delivered to the reset condition position.
Claims (7)
1. a slurry shield is with the air bag piston of blocking pipe; It is characterized in that; Comprise the front cover and first air bag, front cover is provided with a charging air inlet and links to each other with said first air bag, is provided with a rigid support in said first air bag; Said first air bag is fixedly connected with said front cover and rigid support, also is provided with the pull bar connector on the said front cover.
2. air bag piston according to claim 1 is characterized in that, comprises that also inside is provided with second air bag of rigid support, and second air bag is fixedly connected through an intermediate support with said first air bag, and second air bag also communicates with said charging air inlet.
3. air bag piston according to claim 2 is characterized in that, also comprises a rear end cover, places the second air bag rear and is fixedly connected with rigid support in said second air bag.
4. air bag piston according to claim 1 is characterized in that said front cover is provided with upper saw pulley.
5. air bag piston according to claim 4 is characterized in that, said upper saw pulley is four and evenly is located at said front cover front end.
6. air bag according to claim 1 is characterized in that, said charging air inlet is the charging air inlet of band rapid pipe joint.
7. air bag according to claim 2 is characterized in that said rigid support and intermediate support are processed 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 true CN102434754A (en) | 2012-05-02 |
| CN102434754B 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) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148313A (en) * | 2013-04-01 | 2013-06-12 | 中国铁建重工集团有限公司 | Device and method for blocking connecting place between pipes of shield tunneling machine |
| CN103574219A (en) * | 2012-07-20 | 2014-02-12 | 中国石油化工股份有限公司 | Feeding and propelling device for pipe internal leakage flux detector |
| CN106764238A (en) * | 2017-02-24 | 2017-05-31 | 江苏海事职业技术学院 | A kind of self-locking pipeline port is met an urgent need plugging device |
| CN108662347A (en) * | 2017-03-31 | 2018-10-16 | 国核电站运行服务技术有限公司 | A kind of balloon conduit plugging device |
| CN111120771A (en) * | 2020-01-12 | 2020-05-08 | 王伟峰 | Plugging robot in pipeline |
| CN113090851A (en) * | 2021-03-12 | 2021-07-09 | 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3802464A (en) * | 1972-08-14 | 1974-04-09 | Sta Rite Industries | Liquid pressure tank |
| US4629255A (en) * | 1984-02-04 | 1986-12-16 | Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann | Tunneling machine |
| 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
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3802464A (en) * | 1972-08-14 | 1974-04-09 | Sta Rite Industries | Liquid pressure tank |
| US4629255A (en) * | 1984-02-04 | 1986-12-16 | Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann | Tunneling machine |
| 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 |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574219A (en) * | 2012-07-20 | 2014-02-12 | 中国石油化工股份有限公司 | Feeding and propelling device for pipe internal leakage flux detector |
| CN103148313A (en) * | 2013-04-01 | 2013-06-12 | 中国铁建重工集团有限公司 | Device and method for blocking connecting place between pipes of shield tunneling machine |
| CN106764238A (en) * | 2017-02-24 | 2017-05-31 | 江苏海事职业技术学院 | A kind of self-locking pipeline port is met an urgent need plugging device |
| 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 |
| CN108662347A (en) * | 2017-03-31 | 2018-10-16 | 国核电站运行服务技术有限公司 | A kind of balloon conduit 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 |
| CN111120771A (en) * | 2020-01-12 | 2020-05-08 | 王伟峰 | Plugging robot in pipeline |
| CN111120771B (en) * | 2020-01-12 | 2021-05-14 | 王伟峰 | Plugging robot in pipeline |
| CN113090851A (en) * | 2021-03-12 | 2021-07-09 | 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102434754B (en) | 2013-12-04 |
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Granted publication date: 20131204 Termination date: 20140929 |
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