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PE pipe pressure test blind plate

A pipeline pressure test, blind plate technology, applied in the direction of pipe elements, pipes/pipe joints/pipe fittings, using stable tension/pressure to test the strength of materials, etc. The difficulty is also very large and other problems, so as to achieve the effect of easy operation by workers, simple structure and simplified pressure test process.

Active Publication Date: 2015-09-30
MCC5 GROUP SHANGHAI CORPORATION LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is very inconvenient to disassemble and assemble the plug before and after the test, especially when the pipeline is segmented for pressure testing (it needs to be divided into segments when it is greater than 1km), it is very difficult to connect two adjacent segments of the pipeline after the pressure test, and it is impossible to detect whether there is leakage after the connection , if there is leakage, it will affect the normal function of the pipeline, and it will be very difficult to maintain in the later period
[0003] Therefore, the use of PE plugs in the known PE pipeline pressure test has the above-mentioned inconveniences and problems.

Method used

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  • PE pipe pressure test blind plate
  • PE pipe pressure test blind plate
  • PE pipe pressure test blind plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] see now Figure 1 ~ Figure 3 , figure 1 It is a structural schematic diagram of the steel blind plate in use according to the embodiment of the present invention, figure 2 It is a schematic plan view of a steel blind plate in an embodiment of the present invention, image 3 It is a schematic elevation view of the steel blind plate of the embodiment of the present invention. As shown in the figure, the steel blind plate 1 is a circular steel plate with equally spaced bolt holes and waterstops arranged on its edge, a through hole is arranged in the middle, and a short steel pipe 5 is welded in the through hole. Both ends of the short steel pipe have internal threads; the short steel pipe 5 has a nominal diameter of DN25, and the exhaust valve 3 is assembled on one end of the short steel pipe 5 .

[0025] The steel flange piece 6 is provided with bolt holes matching the flange plate of the PE pipeline to be tested, and the steel flange piece 6 is connected to the steel...

Embodiment 2

[0030] When the PE pipeline pressure test blind plate of the present invention is used for subsequent pipeline connection, the exhaust valve 3 valves are closed, the bolts 2 are loosened, the steel blind plate 1 is removed, the steel flange piece 6 is removed, and a flange plate is used. The pipeline can be directly connected to the on-site PE pipeline with a sealing gasket.

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PUM

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Abstract

Disclosed is a PE pipeline pressure test blind plate. A PE pipeline flange is disposed at the end of a PE pipeline. The PE pipeline pressure test blind plate comprising a steel blind plate, a steel flange, a seal gasket and an exhaust valve is characterized in that the steel blind plate (1) is a round steel plate, the edge of the round steel plate is provided with bolts holes at equal intervals and a waterstop, the middle of the round steel plate is provided with a through hole, a steel short pipe (5) is welded in the through hole, two ends of the steel short pipes are provided with internal threads, the steel flange (6) is provided with bolt holes fitting a PE pipeline flange under pressure test, the steel flange (6) and the steel blind plate (1) are connected to hold the steel flange (6) of the PE pipeline flange in the middle through bolts (2), the seal gasket (4) is disposed between the steel blind plate (1) and the PE pipeline flange under pressure test in a backing manner, and the exhaust valve (3) is fitted to one end of the steel short pipe (5). The PED pipeline pressure test blind plate has the advantages of low cost, simple structure and convenience of production.

Description

technical field [0001] The invention relates to a blind plate, in particular to a PE pipe pressure test blind plate. Background technique [0002] With the development of cities, PE pipes have been widely used in pressure pipes of water supply and drainage projects. For pressure pipes, their strength and airtightness tests are especially important. The basic operation of strength and airtightness experiments is: after the construction of PE pressure pipes is completed, Segmented pressure test, welding blocking plate, installation of test equipment, flushing, exhaust, pressurization, leak detection, etc. If the end of the pressure test adopts a PE plug, it is necessary to leave a large enough working pit to facilitate hot-melt welding by the welding machine. It is very inconvenient to disassemble and assemble the plug before and after the test, especially when the pipeline is segmented for pressure testing (it needs to be divided into segments when it is greater than 1km), i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L55/10G01N3/12G01M3/02
CPCG01M3/02G01N3/12
Inventor 周万雷丁顿斯
Owner MCC5 GROUP SHANGHAI CORPORATION LIMITED