Stainless steel corrugated hose connecting devicefor fuel gas transportation

Abstract

The invention discloses a stainless steel corrugated hose connecting device for fuel gas transportation. The stainless steel corrugated hose connecting device for the fuel gas transportation comprises a corrugated hose and a plastic protective sleeve which is arranged on the corrugated hose in a sleeved mode. A plurality of gas-guiding grooves are evenly formed in the plastic protective sleeve. A straight through seat is arranged outside the plastic protective sleeve in a sleeved mode. A sealing ring is arranged between one end of the straight through seat and the plastic protective sleeve. Threads are formed in an inner circle of the other end of the straight through seat. A tool withdrawal groove is formed at the bottom of the threads. Four concave grooves are formed in the threads. A clamping ring is arranged on one side of the tool withdrawal groove, wherein the clamping ring is a metal ring which is divided into two pieces. A ditch groove is formed in an inner circle of the clamping ring. The ditch groove is matched with the corrugated appearance of the corrugated hose. Four bosses are arranged on an outer circle of the clamping ring. The bosses enter the tool withdrawal groove of the bottom of the threads through the four concave grooves, located at the place of the threads, of the straight through seat. A sealing mat is arranged on one side of the clamping ring. The stainless steel corrugated hose connecting device for the fuel gas transportation has the advantages of being convenient to install, high in axial tensile strength and good in sealing property. The stainless steel corrugated hose connecting device for the fuel gas transportation saves inner space and enables a corrugated hose with a larger outer diameter to be capable of adopting standard pipe threads.

Description

[0001] technical field [0002] The invention relates to a metal corrugated hose, in particular to a stainless steel corrugated hose connection device used for on-site installation for gas transmission. Background technique [0003] Shallow annular metal bellows are widely used in water inlet pipelines, gas pipelines, solar water heater water pipelines, and fire hoses due to their large diameter, high pressure bearing, heat resistance, flexibility, corrosion resistance, and long service life. Road and other pipelines. The metal bellows currently used are generally finished products of various lengths, which are selected for use during installation and construction. Since the length of the bellows required for on-site installation is difficult to determine in advance, it is often necessary to bring bellows of various lengths and specifications. With the improvement of corrugated pipe manufacturing technology, 300-meter-long corrugated pipes can be produced domestically. If ...

AI Technical Summary

Problems solved by technology

When the metal bellows is connected with other pipes, it has the advantages of convenience, quickness and low cost, but its connection strength is relatively low. When the pipe is pulled, the connection between the bellows and the nut is prone to excessive force, and its sealing In addition, the outer diameter of the corrugated hose generally needs to be smaller than the inner diameter of the pipe thread by more than 2 mm, which limits its scope of use.

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