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Method for installing pipelines assisted by air bags

A pipeline and airbag technology, which is applied in the field of airbag-assisted installation of pipelines, can solve problems such as construction difficulties, underwater construction of pipelines, and long construction period, and achieve low construction risks and construction costs, easy floating or sinking operations, and saving water transportation cost effect

Inactive Publication Date: 2010-02-17
钟爱民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Difficult construction, long construction period, high risk and high cost have always plagued the underwater construction of pipelines

Method used

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  • Method for installing pipelines assisted by air bags
  • Method for installing pipelines assisted by air bags
  • Method for installing pipelines assisted by air bags

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1, such as figure 1 As shown, the water intake steel pipe water construction method. The diameter of steel pipe 1 is 2m, and total length is 1000m, is divided into 20 sections, adopts flange, bolt connection, construction scheme of the present invention:

[0032] 1. The front end of the first section of steel pipe 1 is blocked with a plugging air bag 5. The plugging air bag 5 has a piercing tube 6. Remote control valves are installed on the inlet and outlet ports 4 of the piercing tube 6. The plugging air bag at the front end 5 There is no emergency, generally can not exhaust;

[0033] 2. Let the front section of the first steel pipe 1 enter the water, and the rear section is assembled and connected with other steel pipes 1 on the shore;

[0034] 3. When launching into the water, seal the nozzle of the steel pipe 1 on the shore with a sealing air bag 5 and inflate it to 0.5 MPa;

[0035] 4. Inflate the steel pipe by blocking the piercing pipe 6 of the air bag...

Embodiment 2

[0040] Example 2, such as figure 2 As shown, the construction method of the drainage steel pipe in water. The diameter of the steel pipe is 1.8m, the total length is 2000m, and it is divided into 40 sections, which are connected by Haval. The construction scheme of the present invention:

[0041] 1. The flange 2 at the front end of the first steel pipe 1 is blocked with a blind plate 3, and the inlet and outlet ports 4 are arranged on the blind plate 3, and a remote control valve is installed, and the rear end of the steel pipe 1 is blocked with a The air bag 5 is blocked, and the blocked air bag 5 has a through-core pipe 6 that can be inflated into the steel pipe 1, so that the first section of the steel pipe 1 enters the water and floats on the water surface;

[0042] 2. The water inlet end of the steel pipe 1 to be connected is blocked with a plugging air bag 5, so that the steel pipe 1 enters the water longitudinally, and the steel pipe 1 on the bank is supported by two ...

Embodiment 3

[0049] Example 3, such as image 3 Shown, cast iron blowdown pipeline diameter is 3m, and total length is 4000m, and every joint length 20m, construction scheme of the present invention:

[0050] 1. The flange 2 at the front end of the first section of the pipeline 1 is blocked with a blind plate 3, and an inlet and outlet 4 are provided on the blind plate 3, and a remote control valve is installed;

[0051] 2. Both ends of the other pipelines 1 to be connected are blocked with the sealing air bag 5, so that the pipeline 1 rolls horizontally and launches into the water;

[0052] 3. The pipeline 1 is connected in a floating state, the construction personnel can operate on the pipeline and the ship, and the pipeline 1 can be turned over with the help of the ship in the water;

[0053] 4. When the pipe 1 is connected and needs to sink, open the valves of the inlet and outlet 4, and the pipe can be exhausted through the through-pipe 6, and the water will enter the pipe 1, and the p...

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Abstract

The invention relates to a method for installing pipelines assisted by air bags, aiming at solving the technical problem in completely changing the current method of pipeline underwater construction,and providing a construction method which can avoid underwater work, reduces work risk and has high efficiency. The whole scheme of the invention is as follows: 1. the front end of a first section ofa pipeline is blocked, the blocking material or the pipeline wall is provided with a water inlet and a water outlet, and if the first section of the pipeline is completely launched, the rear end thereof is blocked by airbags; 2. launching ends of other pipelines to be linked are blocked by airbags, then the pipeline are launched; 3. linkage operation is carried out on the pipeline in a floating state; 4. valves of the water inlet and water outlet are opened, the pipeline and the airbags are exhausted so that water can flow into the pipeline to cause the pipeline to sink, when the pipeline needs to sink after the pipeline linkage is finished; 5. when the pipeline needs to be linked again, the airbags arranged at the pipeline mouth are aerated, then the pipeline is aerated, so that water inthe pipeline can flow out from the water inlet and the water outlet, the pipeline floats, then valves of the water inlet and the water outlet are closed, and the pipeline linkage is carried out again.

Description

technical field [0001] The invention relates to a method for assisting installation of pipelines by an air bag, belonging to the technical field of underwater construction. Background technique [0002] In the underwater construction of the pipeline, it involves the transportation and installation of the pipeline. The pipeline must be divided into many sections, and the flange connection or Harvard connection under water requires the cooperation of many large marine equipment such as cranes, barges and tugboats. If construction is carried out in a shallow water area, these marine machinery and equipment cannot be put into use. [0003] The underwater connection of the pipeline requires divers to work underwater, which is greatly affected by terrain, current, climate and visibility. It is even more difficult to work in waters with rapid currents and large surges. Once the connection fails, it is necessary to build a cofferdam at the pipe connection, and take remedial measure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L1/12F16L1/20
Inventor 钟爱民
Owner 钟爱民
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