Automatic high pressure gas supply and supplement device of long pipe semi-trailer

Abstract

The invention relates to an automatic high pressure gas supply and supplement device of a long pipe semi-trailer, which belongs to the technical field of gas tractors in the transportation of long pipe trailers. The device comprises an NPT1 / 4 double nipple, an NPT1 / 4 stop valve, a phi10*2 stainless steel pipe, a welding joint, an NPT1 / 4-phi10*2 tapered seal welding joint, a fixed joint, an exhaust valve, a fast joint, a three-way ball valve, a high-pressure hose and a gas filling nozzle or a gas filling gun head, wherein one end of the NPT1 / 4 double nipple (1) is assembled on an elbow of a rear compartment pipeline, and the stop valve (2) is installed at the other end; the stop valve is connected with the phi10*2 stainless steel pipe (3) and the fixed joint (6) by the NPT1 / 4-phi10*2 tapered seal welding joint 5; the exhaust valve (7) for supplementing a gas and the male end of the fast joint (8) are connected to the fixed joint (6); and the female end of the fast joint (8), the high-pressure hose (10), the three-way ball valve (9) and the bolt type gas filling nozzle or the gas filling gun head (11) are combined to form a gas supplement hose structure. The invention solves the problem of insufficient gas sources for drawing a trailer head by a user in the transportation of natural gases and is safe and reliable.

Description

technical field [0001] The invention belongs to the technical field of gas tractors in long-tube trailer transportation, and in particular provides a self-supply gas supply device for high-pressure gas long-tube semi-trailers. Background technique [0002] At present, with the application and promotion of long-tube trailers, gas tractors are becoming more and more popular with users. Due to relatively few natural gas filling stations, the natural gas installed in the head of general gas tractors is only enough for a distance of about 200 kilometers. If there is no gas filling station on the road, gas vehicles cannot operate normally. In order to solve the above problems of users, our company has invented a self-supply gas replenishment device, which can be supplemented by natural gas in the trailer gas cylinder when the gas source is insufficient. . Contents of the invention [0003] The purpose of the present invention is to provide a self-supply gas supply device for a ...

AI Technical Summary

Problems solved by technology

[0002] At present, with the application and promotion of long-tube trailers, gas tractors are becoming more and more popular with users. Due to relatively few natural gas filling stations, the natural gas installed in the head of general gas tractors is only enough for a distance of about 200 kilometers. If there is no gas filling station on the road, gas vehicles cannot operate normally. In order to solve the above problems of users, our company has invented a self-supply gas replenishment device, which can be supplemented by natural gas in the trailer gas cylinder when the gas source is insufficient.

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