Internal pressure balance type hydrogenation gun and using method of internal pressure balance type hydrogenation gun

Abstract

The invention discloses an internal pressure balance type hydrogenation gun and a using method of the internal pressure balance type hydrogenation gun. The internal pressure balance type hydrogenationgun comprises a first cavity, a second cavity, a third cavity, a first valve core, a first valve seat, a first spring, a second valve seat; a second valve core, a second spring, an air inlet passage,an exhaust passage, a needle valve and a trigger, wherein the first cavity, the second cavity and the third cavity are set as hydrogen fuel flowing passages and communicate with each other; the firstvalve core and the first valve seat are arranged in the first cavity and are configured to communicate or disconnect the first cavity and the second cavity; the first spring is arranged between the first valve core and the first valve seat; the second valve seat is arranged in the second cavity; the second valve core is matched with a hydrogenation hole of equipment to be hydrogenated; the secondspring is arranged between the second valve seat and the second valve core; the air inlet passage communicates with the first cavity and comprises a first branch pipe; and the branch pipe communicates with the cavity between the first valve core and the first valve seat. The internal pressure balance type hydrogenation gun and the using method of the internal pressure balance type hydrogenation gun provided by the invention solve the problems of reliable sealing and safety release of residual hydrogen in the hydrogen filling process in the prior art.

Description

technical field [0001] The invention belongs to the technical field of new energy, and in particular relates to an internal pressure balanced hydrogenation gun and a method for using the internal pressure balanced hydrogenation gun. Background technique [0002] The energy problem is one of the important problems facing society today, and the energy of fossil fuels will eventually be exhausted. Therefore, the development of new energy sources is the trend pursued by today's society, and fuel cells that are environmentally friendly are a trend in the development of new energy sources. Fuel cells use electrochemical reactions instead of combustion (gasoline, diesel) or energy storage (battery batteries)—the most typical traditional backup power solutions. Combustion releases pollutants like COx, NOx, SOx gas and dust. As mentioned above, fuel cells only produce water and heat. If the hydrogen is produced by renewable energy sources (photovoltaic panels, wind power, etc.), t...

AI Technical Summary

Problems solved by technology

Hydrogen is a low-molecular gas, and the explosion limit range is: 4.1% to 74.2% volume concentration. It is very easy to explode and cause safety accidents. At present, the hydrogenation gun market is divided into two pressure levels: 35MPa and 70MPa. It mainly has the following technical problems: Most of the operation methods are held by both hands, which is not conducive to the refueling operation of refueling personnel; at the same time, fuel hydrogen is refueled through the hydrogen refueling port on the side of the hydrogen fuel cell vehicle, which belongs to the working condition of high pressure and high explosion-proof requirements. The gun and the high-pressure hose are in a high-pressure state for a long time, which is likely to cause safety accidents such as pipe explosion; and because the higher the pressure in the gun body and the high-pressure hose, the higher the sealing and safety requirements, the pressure resistance must be satisfied while the pressure resistance is satisfied. Zero-leakage airtightness requirements, the sealing material must have self-lubricating, polymer structure

[0004] Although the above-mentioned prior art discloses a hydrogenation gun, the equipment of the hydrogenation gun is highly complex, and the handle operation is cumbersome, which is not suitable for fast and frequent installation and disassembly, and lacks a perfect self-locking device, which is safe. needs improvement

[0005] Therefore, it is necessary to improve the deficiencies and defects of the prior art, provide an internal pressure balance type hydrogenation gun and the use method of the internal pressure balance type hydrogenation gun, which solves the problems in the hydrogen filling process in the prior art. Reliable sealing and safe release of residual hydrogen. At the same time, through the setting of the intake channel and its branch pipes, the self-sealing structure of hydrogen fuel is realized. The addition of hydrogen fuel can be realized without repeatedly opening the hydrogen storage device, avoiding the common Hydrogenation equipment requires a lot of operating force

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