Hollow structure wall winding pipe double-end socket sealing structure and sealing test method

Abstract

The invention discloses a hollow structure wall winding pipe double-end socket sealing structure and a sealing test method. The end of a winding pipe is inserted into a double-end socket joint, sealing connection is achieved through sealing rings, the sealing rings comprise the first sealing ring and the second sealing ring, a gap is arranged between the first sealing ring and the second sealing ring to form a closed test cavity, a test channel is arranged on the double-end socket joint, and the test cavity communicates with the external environment of the double-end socket joint through the test channel. By arranging the two sets of sealing structures, double flexible sealing to the connecting position is achieved, the integrity keeping effect of sealing of the connecting position is good, meanwhile, a simple checking structure is formed through the test cavity and the test channel, the sealing performance of the whole connecting position can be obtained only by checking the sealing performance of the test cavity, the operation process is simple and efficient, accuracy is high, the hollow structure wall winding pipe double-end socket sealing structure and the sealing test method are especially suitable for sealing performance checking of a pipeline construction site, and the defects existing in a conventional sealing test method are overcome.

Description

technical field [0001] The invention relates to the technical field of hollow structural wall winding pipes, in particular to a double-end socket sealing structure and a sealing test method for hollow structural wall winding pipes. Background technique [0002] Hollow structural wall winding pipe is a special structural wall pipe with high resistance to external pressure made of high-density polyethylene by hot winding molding process. Due to its unique forming process, it can produce diameters up to 3 meters of pipe, which is difficult to complete with other production processes. Due to its excellent welding performance, high-density polyethylene (HDPE) not only guarantees the product molding process and product quality, but also provides a variety of reliable methods for construction connections, such as electric fusion welding, heat shrinkage connection, etc. At the same time, this It is also an important reason why leakage rarely occurs. The hollow structure wall windi...

AI Technical Summary

Problems solved by technology

The sealing structure has the following defects in the process of use: 1. It has high requirements on materials, and high-strength composite materials need to be used to manufacture sockets and sockets. At the same time, additional sockets and sockets need to be configured, and the cost of use is too high; The sealing performance of the socket slope is double-sealed through rigid surface fit and flexible inner sealing ring, but the sealing effect of the rigid contact surface becomes poor when it is deformed by force, and the sealing of the contact surface is achieved only by a single-layer inner sealing ring. There is a hidden danger of leakage, and the integrity of the seal at the joint is poorly maintained

The specific operation steps of this sealing test method are relatively complicated, and the requirements for the test site are relatively high. When the sealing performance inspection is carried out on the construction site, this sealing test method is difficult to implement, and the accuracy is also poor, and it cannot accurately reflect the sealing performance of the joint in real time.

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