A safety connector for a natural gas cylinder

Abstract

The invention discloses a safe connector for a natural gas bottle. The safe connector comprises a shell. An inner cavity is formed in the shell. A core body is installed in the inner cavity in a sliding mode. An elastic part is installed between the end, close to an entrance, of the core body and the shell. An outer sealing face is arranged outside the core body. An inner sealing face is arranged on the inner wall of the inner cavity of the shell. The outer sealing face of the core body is matched with the inner sealing face of the shell by means of elastic force of the elastic part. An extruding contact part is arranged on the end face, close to a guiding opening, of the core body. The extruding contact part is extruded by a component to enable the inner sealing face and the outer sealing face to be separated, and enable the entrance and the guiding opening to be communicated. A first pressure relief structure is installed on the shell or the core body, wherein the first pressure relief structure prevents the situation that due to the fact that pressure of the inner cavity of the safe connector is too large, explosion occurs. When a safety valve or a pressure meter or a pressure sensor is disassembled and replaced, the safe connector can be automatically closed to effectively prevent natural gas in the steel bottle from leaking, a great deal of the natural gas is saved, the pressure is relieved when the pressure value in the gas bottle exceeds a safe value, and the safety performance is greatly improved.

Description

technical field [0001] The invention relates to a safety connector, in particular to a safety connector used on a natural gas cylinder. Background technique [0002] For vehicles that use natural gas as fuel, gas cylinders are required to store natural gas, and these gas cylinders are usually connected to a gas supply pipeline, a safety valve, or equipped with a pressure sensor and pressure gauge, and a stop valve is generally installed on the gas supply pipeline , used to open and close the gas supply pipeline, while the safety valve, pressure gauge, and pressure sensor are directly connected to the inside of the gas cylinder, and it is not suitable to install valves, because the pressure of compressed natural gas inside the gas cylinder will change from time to time, once the pressure in the gas cylinder reaches the set value Safety pressure, the safety valve will automatically open to relieve pressure. Therefore, if a valve is installed, the valve must also be normally op...

AI Technical Summary

Problems solved by technology

[0002] For vehicles that use natural gas as fuel, gas cylinders are required to store natural gas, and these gas cylinders are usually connected to a gas supply pipeline, a safety valve, or equipped with a pressure sensor and pressure gauge, and a stop valve is generally installed on the gas supply pipeline , used to open and close the gas supply pipeline, while the safety valve, pressure gauge, and pressure sensor are directly connected to the inside of the gas cylinder, and it is not suitable to install valves, because the pressure of compressed natural gas inside the gas cylinder will change from time to time, once the pressure in the gas cylinder reaches the set value Safety pressure, the safety valve will automatically open to relieve pressure. Therefore, if a valve is installed, the valve must also be normally open, but the opening and closing of the valve cannot be intuitively reflected. Therefore, the valve may be forgotten to open, which leads to safety problems. The valve does not play a role at all. Similarly, the pressure gauge and pressure sensor are not easy to install the valve

Then once the safety valve, pressure gauge, and pressure sensor need to be dismantled, calibrated or repaired and replaced regularly, then when the safety valve, pressure gauge, and pressure sensor are disassembled, all the natural gas in the bottle will be released, causing a lot of waste of resources

At present, there is also a connector used to be installed between the gas cylinder and the safety valve, which can seal the gas cylinder when the safety valve is removed, and communicate with the inside of the gas cylinder when the safety valve is installed. This kind of connector also has a very big disadvantage. When removing the safety valve, if you forget to install the safety valve due to other things, then the entire gas cylinder will be airtight, and when the temperature of the gas cylinder rises for some reason, the gas cylinder will The natural gas pressure inside the cylinder increases suddenly, causing the internal pressure of the cylinder to exceed the safe value and unable to release the pressure in time, which poses a safety hazard

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