Non-metal pipeline hydraulic pressure seepage verifying attachment

Abstract

The invention provides a non-metal pipeline hydraulic pressure seepage verifying attachment. A system of the non-metal pipeline hydraulic pressure seepage verifying attachment comprises a rectangle framework body, a bell end bulkhead, a jack bulkhead, a pipeline holt hoop iron, a jack, a water flooding pressure measurement system on the bell end bulkhead, and an operation method. The invention is characterized in that: the rectangle framework body forms a rectangle through channel steel welding, length of the rectangle is set according to length of a segment of pipeline, width of the rectangle is set according to a maximal diameter of a detected pipeline, and the rectangle framework body is provided with the pipeline holt hoop iron inside; one end of an intake and exhaust connecting pipe is connected with the bell end bulkhead, the other end of the intake and exhaust connecting pipe is connected with one end of a pressurization opening valve, an intake and exhaust valve and a pressure maintaining opening valve respectively, the other end of the pressurization opening valve is connected with a pressurization pressure gauge, and the other end of the pressure maintaining opening valve is connected with a pressure maintaining pressure gauge; the operation method is carried out according to certain steps. The verifying attachment has small investment, low cost and low technology difficulty, and is applied to a field pipeline construction site and a small scale pipeline production manufacturer.

Description

Technical field [0001] The invention belongs to a municipal engineering pipeline construction method or device, in particular to a method and a device for inspecting hydraulic pressure leakage of a large-diameter non-metallic pipeline at a construction site. Background technique [0002] my country's water supply and drainage projects before the 1980s mainly used steel pipes such as steel straight welded pipes, spiral steel coil pipes, socket cast iron pipes, and reinforced concrete pipes. Later, plastic pipes, rubber pipes, and plastic pipes were used. Pipes, concrete pipes, asbestos cement pipes, FRP sand pipes, etc. When we are constructing and installing the road pipe network of the new airport municipal engineering, we choose FRP sand pipes. Therefore, the inspection quantity of 9.2.2.3 water pressure leakage in the national standard GB / T 21238-2007 should be determined through consultation between the supplier and the buyer, but it should not be less than 1%. Leak tes...

AI Technical Summary

Problems solved by technology

It is mainly designed to solve the large-diameter, socket-type non-metallic pipeline hydraulic leakage inspection, which is not convenient to fix at the construction site, and is designed for the situation where the thrust at both ends of the pipeline is tens of tons.

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