Eight-tube automatic gas supply and supplementation device of high-pressure gas long tube semi-trailer

Abstract

The invention discloses an eight-tube automatic gas supply and supplementation device of a high-pressure gas long tube semi-trailer, which belongs to the technical field of fuel gas tractors for long tube trailer transportation. The device comprises a front end plug, a safety device, a double nipple, a ball valve, an exhaust valve, a three-way connector, a quick-coupler and an air supplementing hose structure, and is characterized in that: one end of the front end plug (1) is arranged on the left lower bottle mouth of a front cabin and the other end of front end plug (1) is first provided with the B-type safety device (2) and then connected with an NPT1 / 2 inlet ball valve (4) through an NPT1 / 2 elbow (3); and the ball valve (4) is connected with the three-way connector (6) which is connected with the air supplementing exhaust valve (5) and a male connector of the quick-coupler (7). The device has the advantages of eliminating the trouble of insufficient air source of a tractor head in natural gas transportation for users and realizing safety and reliability.

Description

technical field [0001] The invention belongs to the technical field of gas tractors in the transportation of long-tube trailers, and in particular provides a self-supply and supplementary gas device for an 8-tube high-pressure gas long-tube semi-trailer. 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-sup...

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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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