Water pipe for connection and replacement of underground glass reinforced plastic mortar pipes and steel pipes

Abstract

The invention discloses a water pipe for connection and replacement of underground glass reinforced plastic mortar pipes and steel pipes. The water pipe comprises water conveying steel pipes, flange connection pipes and reinforced concrete buttresses, wherein flange plates are welded to one ends of two of the water conveying steel pipes, two positioning steel plates for preventing malposition of butt joint between steel pipes are welded to the inner wall of one end of each of the rest of water conveying steel pipes, the end, provided with a flange plate, of each flange connection pipe is connected with the flange plate of the corresponding water conveying steel pipe, grooves are formed in the outer wall of the other end of each flange connection pipe, the grooves are filled with elastic rings, the end, provided with the grooves, of each flange connection pipe is inserted into and connected with the corresponding reinforced plastic mortar pipe, and the water conveying steel pipes are welded together. According to the water pipe, the construction technology is simple, required devices are simple, replacement is easy, municipal water supply pipeline replacement speed is increased greatly, construction quality is improved, and safety risks are reduced.

Description

【Technical field】 [0001] The invention relates to an underground water delivery pipeline, in particular to a water delivery pipeline used for connecting and replacing an underground glass fiber reinforced plastic sand pipe and a steel pipe. 【Background technique】 [0002] At present, many underground water supply pipes are made of FRP sand pipes, which have the advantages of simple structure, cheap price, and good sealing performance. However, the FRP sand-filled pipe has poor pressure bearing capacity and cannot withstand excessive external pressure. Once the foundation facilities such as bridge piers are laid next to the underground FRP sand-filled pipe, the FRP sand-filled pipe will not be able to withstand the pressure imposed by these facilities. explosion due to pressure. Therefore, in many places where the underground water supply pipes are FRP sand-filled pipes, once the above situation is encountered, the FRP sand-filled pipes will be replaced. However, the current...

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Problems solved by technology

However, the FRP sand-filled pipe has poor pressure bearing capacity and cannot withstand excessive external pressure. Once the foundation facilities such as bridge piers are laid next to the underground FRP sand-filled pipe, the FRP sand-filled pipe will not be able to withstand the pressure imposed by these facilities. explosion caused by pressure

Therefore, in many places where the underground water supply pipes are FRP sand-filled pipes, once the above situation is encountered, the FRP sand-filled pipes will be replaced. However, the current replacement device cannot achieve quick replacement well, and the quality is not good enough. This phenomenon Urgent need to improve

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