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Process and device for inner pressure type conduits interface pressure testing

A pipeline interface and internal pressure technology, which is applied in the field of pressure testing of water supply and drainage pipeline interfaces, can solve the problems of complicated operation, cumbersome device, poor airtightness, etc., and achieves the effect of high airtight reliability, convenient operation and less water consumption.

Active Publication Date: 2008-11-12
BEIJING MUNICIPAL ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This device is bulky, cumbersome to operate, consumes a lot of water and has poor airtightness

Method used

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  • Process and device for inner pressure type conduits interface pressure testing
  • Process and device for inner pressure type conduits interface pressure testing
  • Process and device for inner pressure type conduits interface pressure testing

Examples

Experimental program
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Embodiment Construction

[0012] See attached figure 2 , the present invention is a pressure test method for internal pressure pipe joints. The method is to place a special-shaped rubber ring with a "convex" cross-section and an opening gap at the gap between the two ends of the pipe joint. After the ring is supported, open the exhaust valve and inject water into the gap of the special-shaped rubber ring. After the water is filled, close the exhaust valve and continue to fill with water and pressurize. After the gap between the two ends of the interface is sealed and a sealed cavity is formed at the pipe joint, continue to fill the special-shaped rubber ring with water and pressurize. Pressure bearing capacity, that is, to check whether the pipe interface is qualified.

[0013] The working principle of the internal pressure pipeline interface pressure test method is as follows:

[0014] Such as figure 2 As shown, a special-shaped rubber ring 7 with a "convex" cross-section and an opening gap is pl...

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Abstract

The related pressure test method for an interface of internal gas pressure pipe comprises: putting a heterotype rubber ring as T-shaped section with opening gap on interface of faucet pipe, inner expanding the rubber ring to open a drain valve, filling water and gas at one time till full of water; closing the valve, continuing to fill water and force pressure to seal the interface section gap as a cavity, and continuing to fill water to detect the pressure-bearing capacity. Besides, the used device also comprises a water inject pump and a pressure gage; the detachable expand ring includes three arc steel plates every with a mosaic opening fixed together by bolts.

Description

Technical field: [0001] The invention relates to a pressure test method and device for a water supply and drainage pipeline interface. Background technique: [0002] The domestic water supply and drainage pipeline construction acceptance pressure test adopts the method of filling the pipeline with clean water for pressure test, and the national standard GB50268-97 "Code for Construction and Acceptance of Water Supply and Sewerage Pipeline Engineering" is implemented. This method of pressure testing is costly and wastes a lot of precious tap water. Only the overall pipeline leakage can be found at the pressure testing interface, and it is difficult to determine the specific nozzle leakage. In developed countries such as the United States, Europe, Japan, etc., the method of pressure testing at the joints of the respective pipelines and the use of steel casing capsules for water filling and sealing are adopted. The specific method is to set a capsule on both sides of the pipe ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/26
Inventor 郭志援梁丽媛
Owner BEIJING MUNICIPAL ENG RES INST
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