Connecting structure and connecting method for quick disassembly and assembly of firefighting pipelines

Abstract

The invention relates to a connecting structure and a connecting method for quick disassembly and assembly of firefighting pipelines. The connecting structure comprises: a connecting pipe fitting, wherein the connecting pipe fitting is provided with a plurality of pipe connectors communicating with each other, each pipe connector is connected with a pipeline, the inner wall of each pipe connector is provided with an inner clamping groove along the circumferential direction, each pipe connector is provided with an insertion hole, and each insertion hole communicates with the corresponding inner clamping groove; a casing pipe sleeved on the pipeline, wherein each pipe connector is sleeved on the casing pipe, outer clamping groove used in cooperation with the inner clamping grooves are formed in the outer wall of the pipeline, and a plurality of limiting holes are evenly formed in the casing pipe in the circumferential direction at intervals; fasteners used for connecting the pipelines, the casing pipe and the connecting pipe fitting together, wherein the fasteners are inserted from the insertion holes and penetrate through the limiting holes to be inserted into the outer clamping grooves, and the casing pipe is rotated to drive the fasteners to rotate together so that the upper ends of the fasteners can be arranged in the inner clamping grooves; and sealing rings arranged on the outer walls of the pipelines and used for sealing the pipe connectors and the pipelines. The connecting structure has the advantages of reasonable structural design, good structural stability, reliable sealing, low cost, convenience in disassembly and the like.

Description

Technical field: [0001] The invention relates to the technical field of fire-fighting pipeline installation, in particular to a fire-fighting pipeline quick disassembly and connection structure and a connection method. Background technique: [0002] In fields such as fire pipeline construction and plumbing pipeline construction, it is often necessary to connect two pipelines in series. In the prior art, two pipelines are mainly connected by malleable steel galvanized pipe joints, and the pipes and pipe joints are connected by threads, and a sealing tape is wrapped around the threaded joints for sealing. Although the existing technical solutions can realize the connection of pipelines, there are still some outstanding problems: first, the external thread of the pipeline needs to be processed on site, which undoubtedly increases the difficulty of on-site construction and the construction period; When the pipeline is disassembled and maintained, it is necessary to disassemble ...

AI Technical Summary

Problems solved by technology

Although the existing technical solutions can realize the connection of pipelines, there are still some outstanding problems: first, the external thread of the pipeline needs to be processed on site, which undoubtedly increases the difficulty of on-site construction and the construction period; When the pipeline is disassembled and repaired, it is necessary to disassemble the pipelines connected in series behind it. Although the operation is not difficult, it is very cumbersome and time-consuming.

However, the above technical solution also has some limitations. First, the diameter of the pipe fittings is larger than the diameter of the steel pipe, and the diameter of the connecting piece is larger than the diameter of the pipe fittings. The operation is very unfavorable; the second is that the connecting piece needs to be set on the steel pipe first during installation, then the snap ring is installed in the slot of the steel pipe, and finally the connecting piece is threaded with the pipe fitting, which needs three steps to complete, and the installation operation is still It needs to be further simplified; the third is that the snap ring and / or the card slot are likely to break away from the card slot due to long-term use wear or corrosion, which will lead to the failure of the pipeline connection, and the reliability of the pipeline connection structure needs to be improved; the fourth is the sealing effect Poor, side leakage is easy to occur, there are two main reasons for the poor sealing effect: one is that there is a large distance between the connecting piece and the steel pipe, and it is difficult to ensure that the steel pipe is aligned with the center of the pipe fitting due to the long steel pipe during the actual installation of the steel pipe Installation, the radial direction of the steel pipe is prone to offset; second, the pipe fittings and steel pipe ends used to extrude the gasket are end planes, and it is difficult to align the steel pipe and pipe fittings during actual installation, which will cause one side of the gasket to be stressed Too large, while the force on the other side is too small, which eventually leads to the problem of side leakage due to poor sealing. At the same time, the gasket is easily damaged locally due to uneven force.

[0004] To sum up, although there are many solutions in the prior art that can realize the series connection of two pipelines, there are still some deep-seated technical problems to be solved in actual use, such as structural stability, sealing reliability, operability and cost, etc.

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