Blocking air bag capable of guiding flow

Abstract

The utility model relates to a plugging air bag capable of guiding flow, which comprises an air bag body, the air bag body is provided with a through flow guiding pipe, a through detection pipe and a through wire harness pipe, the flow guiding pipe, the detection pipe and the wire harness pipe are respectively connected with the air bag wall through which the flow guiding pipe, the detection pipe and the wire harness pipe penetrate in a sealing mode, and the flow guiding pipe is located on the lower portion of the air bag body. The detection pipe and the wire harness pipe are located on the upper portion of the air bag body, and a flange used for pipeline connection is arranged at the outer end of the flow guide pipe and used for being connected with a water guide pipeline. According to the utility model, the laying length of the water guide pipeline is effectively reduced, the operation is facilitated, the construction influence range is reduced, the efficiency is improved, the construction period is shortened, and the device is mainly used for upstream and downstream pipeline end sealing in underground pipeline construction.

Description

Technical Field

[0001] This utility model relates to a flow-directing and sealing airbag. Background Technology

[0002] Water shut-off airbags, also known as water-blocking airbags, water-sealing airbags, or inflatable pipe plugs, are inflatable bags made of high-molecular synthetic materials such as rubber and fiber fabrics through a high-temperature vulcanization process. They come in various sizes and shapes and, when inflated, form a flexible sphere. They are mainly used for emergency repairs of drainage and sewage pipelines and for water tightness tests. During construction, the shut-off airbags are used to block the upstream and downstream pipes of the construction section to prevent water from entering the construction area. Because of their ease of use, shut-off airbags can quickly block water flow in different pipe diameters, on different planes, and at different locations, making them a commonly used tool in underground pipeline construction. However, to ensure the original function of the pipeline, temporary water diversion pipes and pumps need to be installed to introduce water from the upstream pipeline into the downstream pipeline. Since conventional operations can only access the underground via manholes, after entering the manholes at both ends of the work section, the upstream or downstream pipe openings of the manholes are blocked with sealing airbags. Therefore, it is necessary to connect the two ends of the water diversion pipe to the upstream and downstream manholes (see...). Figure 1 Therefore, the water diversion pipeline needs to span a long distance, which not only increases construction costs but also expands the affected area on the ground. Utility Model Content

[0003] The purpose of this invention is to provide a flow-guiding sealing airbag to shorten the laying distance of water pipes and facilitate related construction operations.

[0004] The technical solution of this utility model is: a flow-directing and sealing airbag, including an airbag body, wherein the airbag body is provided with a through-flow tube, and the through-flow tube is sealed to the airbag wall through which it passes.

[0005] Preferably, the guide tube is a rigid tube, such as an alloy tube or an engineering plastic tube.

[0006] Preferably, the outer end of the guide pipe is provided with a pipe connection structure, such as a flange.

[0007] Preferably, the guide tube is inserted into the lower part of the airbag body.

[0008] Preferably, the airbag body is provided with a through-hole detection tube and / or cable bundle tube, the detection tube being sealed to the airbag wall through which it passes, and the cable bundle tube being sealed to the airbag wall through which it passes.

[0009] Preferably, the guide tube is a rigid tube, such as an alloy tube or an engineering plastic tube.

[0010] Preferably, the cable bundle tube is a rigid tube, such as an alloy tube or an engineering plastic tube.

[0011] Preferably, the outer end of the detection tube is provided with a pipe connection structure, such as a flange.

[0012] Preferably, the outer end of the detection tube is connected to a pipe connection structure with or without a detection tube valve, such as a ball valve.

[0013] Preferably, the detection tube is inserted into the upper part of the airbag body.

[0014] Preferably, the cable bundle tube is installed in the upper part of the airbag body.

[0015] The beneficial effects of this utility model are as follows: Because a guide pipe is added to the sealing airbag, the sealed pipeline can be connected through the guide pipe. Connecting both ends of the water guide pipe to the guide pipes of the sealing airbags at both ends of the work section allows for the connection of upstream and downstream pipelines within the work section. This not only facilitates the operation but also significantly shortens the laying length of the water guide pipeline, reduces the impact range of construction, and lowers construction costs. The inclusion of a detection pipe allows for the detection of the concentration of toxic and harmful gases within the sealed pipeline, which helps ensure the safety of related construction work. Furthermore, the inclusion of a wiring harness facilitates the laying of cables / wiring harnesses for facilities such as negative pressure sensors and water level sensors within the sealed pipeline, thereby facilitating the detection of water level and negative pressure within the sealed pipeline and simplifying the wiring setup of the corresponding control system.

[0016] This invention effectively reduces the laying length of water diversion pipelines, facilitates operations, reduces the scope of construction impact, improves efficiency, and shortens the construction period. It can be mainly used for sealing upstream and downstream pipelines in underground pipeline construction. Attached Figure Description

[0017] Figure 1 This is a side view (in use) of the flow-directing and sealing airbag involved in this utility model.

[0018] Figure 2 This is a front view schematic diagram of the flow-directing and sealing airbag involved in this utility model.

[0019] Figure 3 This refers to the layout of the water-guiding pipe when using a flow-guiding and blocking airbag;

[0020] Figure 4 This refers to the layout of the water diversion pipe when using conventional sealing airbags (non-draining sealing airbags);

[0021] The diagram shows the following: 10. Airbag body; 12. Airbag guide tube; 13. Airbag guide tube opening; 15. Detection tube; 16. Airbag detection tube opening; 18. Airbag conduit; 19. Cable bundle opening; 20. Working section; 22. Upper side well of the working section; 23. Lower side well of the working section; 25. Water guide pipe; 27. Upstream well; 28. Downstream well. Detailed Implementation

[0022] See Figures 2-4 This type of airbag with flow-directing and sealing function can be regarded as an existing airbag with the addition of a flow-directing tube 14 that penetrates the airbag body 10. The flow-directing tube and the airbag body are sealed, and the airbag does not leak air due to the setting of the flow-directing tube (and other components).

[0023] The drainage tube can be made of lightweight alloy tubing or any other suitable material. It is securely sealed to the airbag wall where it passes through, and this connection can be achieved using any suitable existing technology, such as bonding with suitable adhesive or securing with clamps. The airbag body can have holes for the drainage tube to pass through, and a short connecting tube (joint) protruding outwards from these holes. The connecting tube is fitted onto the drainage tube passing through these holes and is bonded to the drainage tube wall with adhesive or secured to the drainage tube with clamps.

[0024] If necessary, the adhesive can be cured under pressure.

[0025] Depending on the usage, the guide pipe is installed at the lower part of the airbag body, near the bottom of the airbag, so as to draw water from the bottom of the pipe or send water into the bottom of the pipe. The outer end of the guide pipe (away from the end of the blocked pipe) has a flange or other structure for pipe connection to connect to the water guide pipe. The inner end of the guide pipe (adjacent to the end of the blocked pipe) has a port 15 (or inner guide pipe port) located on the outside of the airbag to avoid the airbag obstructing water pumping.

[0026] In use, the external guide pipe is connected (via a connecting pipe) to the inlet of the water pump (the pump on the water guide pipe, usually a variable frequency pump). Depending on the water quality, a filter can be installed on the inlet side of the pump to prevent clogging. The pump is preferably controlled by a variable frequency drive, which automatically adjusts the pump's operating status / frequency based on the water level inside the air bladder (i.e., inside the blocked pipe). The lowest liquid level inside the air bladder should be above the internal guide pipe inlet to prevent the pump from running dry, and the highest water level should be below the inner inlet of any other through-pipes (e.g., detection pipes, cable conduits) installed on the air bladder to prevent water from flowing into or out of the pipes.

[0027] Using the same connection method, a detection tube 18 can be installed on the airbag. The detection tube should preferably be installed on the upper part of the airbag, higher than the highest design water level inside the airbag.

[0028] The outer end port 19 of the detection tube can be equipped with a flange or other connection structure. A ball valve or other suitable valve can be installed through the flange or other connection structure to open or close as needed.

[0029] Depending on the actual needs, an endoscope can be inserted into the blocked pipe through the detection tube to inspect the inside; alternatively, the gas inlet tube of a pump-type gas detector can be inserted into the detection tube (or the blocked pipe) to measure the concentration of toxic and harmful gases within the pipe. Before removing the seal, if the concentration of toxic and harmful gases in the pipe is too high, ventilation can be carried out through the detection port or the diversion port. Removal work can only proceed after the gas detection is qualified. If the construction period is long, or the pipe diameter is large and the strength of the airbag seal alone is insufficient, brick sealing can be combined. In this case, the pipe interfaces (diversion pipe port, detection pipe port, etc.) must be left outside the brick sealing.

[0030] Depending on actual needs, a cable bundle tube (or wire harness tube, or wire conduit) 16 can be installed through the airbag body for threading cable bundles. The relevant cables are led out from the outer end of the bundle tube 17 and connected to the relevant control system.

[0031] The cable bundle can also be made of rigid pipes such as alloy pipes or engineering plastic pipes. The cable bundle can be sealed to the airbag wall in the same way as the guide pipe, with both the inner and outer ends of the cable bundle extending outside the airbag.

[0032] When in use, a negative pressure sensor and / or a liquid level sensor can be equipped for the relevant control (system). When a negative pressure sensor is equipped, once negative pressure occurs in the blocked pipeline, the system controls the water pump to automatically stop based on the signal from the negative pressure sensor; after the negative pressure is released, the system controls the water pump to automatically resume operation, thereby achieving automatic operation without human intervention.

[0033] Cable bundles are used to run cables / wiring harnesses for level sensors and / or negative pressure sensors (if any) to transmit the corresponding sensing signals for pump operation control.

[0034] Typically, the flow guide tube, detection tube, and cable bundle tube are all horizontally installed (in use) and parallel to each other.

[0035] Unless otherwise specified, the preferred and optional technical means disclosed in this utility model can be arbitrarily combined to form several different specific embodiments when one preferred or optional technical means is a further limitation of another technical means.

Claims

1. A flow-directing and sealing airbag, comprising an airbag body, characterized in that... The airbag body is provided with a through-flow tube, which is sealed to the airbag wall through which it passes.

2. The flow-directing sealing airbag as described in claim 1, characterized in that... The guide tube is a rigid tube.

3. The flow-directing sealing airbag as described in claim 2, characterized in that... The rigid tube used as a flow guide is an alloy tube or an engineering plastic tube.

4. The flow-directing and sealing airbag as described in claim 1, characterized in that... The outer end of the guide tube is provided with a pipe connection structure.

5. The flow-directing sealing airbag as described in claim 4, characterized in that... The pipe connection structure located at the outer end of the guide pipe is a flange.

6. The flow-directing sealing airbag as described in claim 1, characterized in that... The guide tube is inserted into the lower part of the airbag body.

7. The flow-directing sealing airbag as described in any one of claims 1-6, characterized in that... The airbag body is provided with a through detection tube and / or a cable bundle tube, the detection tube being sealed to the airbag wall through which it passes, and the cable bundle tube being sealed to the airbag wall through which it passes.

8. The flow-directing sealing airbag as described in claim 7, characterized in that... The guide tube is a rigid tube; the cable bundle tube is a rigid tube.

9. The flow-directing sealing airbag as described in claim 7, characterized in that... The outer end of the detection tube is provided with a pipe connection structure.

10. The flow-directing sealing airbag as described in claim 7, characterized in that... The detection tube is inserted through the upper part of the airbag body; the cable bundle tube is inserted through the upper part of the airbag body.

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