A safety connector for a natural gas cylinder

A technology of connectors and natural gas, which is applied in the direction of safety valves, engine components, balance valves, etc., can solve the problems of safety hazards, valve opening and closing can not be intuitively reflected, valves forget to open, etc., to achieve the effect of preventing explosions

Inactive Publication Date: 2018-01-02
邬子健
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A safety connector for a natural gas cylinder
  • A safety connector for a natural gas cylinder
  • A safety connector for a natural gas cylinder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1As shown, a safety connector for a natural gas cylinder includes a housing 1, one end of the housing 1 is provided with an inlet threaded section 2, and the inlet threaded section 2 is provided with an inlet 4; the other end of the housing 1 is provided with a The outlet fixed section 3 is provided with an outlet 5 on the outlet fixed section 3, and an inner cavity 10 communicating with the inlet 4 and the outlet 5 is arranged in the housing 1. In this embodiment, the inlet threaded section 2 and the housing 1 The main body is split and fastened through screw connections. Of course, other connection methods can also be used between the inlet threaded section 2 and the main body of the housing 1, such as integral molding or welding. The inlet threaded section 2 is either an external thread or an internal thread, which mainly can be matched with the pipe interface on the gas cylinder. The outlet fixed section 3 is used to connect with devices such as safe...

Embodiment 2

[0033] In this embodiment, the safety connector further includes a second pressure relief structure, the first pressure relief structure is mounted on the core 6 , and the second pressure relief structure is mounted on the housing 1 . Of course, if the first pressure relief structure is mounted on the housing 1 , then the second pressure relief structure is mounted on the core 6 .

[0034] The casing 1 is provided with a mounting screw hole 17 connecting the inner cavity 10 with the outside of the casing 1 , and a screw sleeve 18 is installed in the mounting screw hole 17 , and the second pressure relief structure is mounted on the screw sleeve 18 . The structure of the second pressure relief structure is the same as that of the first pressure relief structure. Certainly, the present invention discloses three kinds of pressure relief structures, so the first pressure relief structure and the second pressure relief structure can choose any one or any two of these three pressure...

Embodiment 3

[0036] The basic structure in this embodiment is the same as that in Embodiment 1, except that the first pressure relief structure is different. In this embodiment, the first pressure relief structure includes an elastic bursting membrane 23, and the core body 6 is close to the outlet. The end of 5 (that is, the downstream end 8) is provided with a communication hole connecting the inner chamber 10 and the outlet 5, and the elastic bursting membrane 23 is fixed in the communication hole to separate the communication hole and the outlet 5, and the communication hole in the communication hole A piercing structure 19 is installed outside the elastic bursting membrane 23, and the piercing structure 19 cooperates with the deformed elastic bursting membrane 23 to puncture the elastic bursting membrane 23 when the inner chamber 10 exceeds the safety pressure.

[0037] And described communicating hole comprises the threaded hole section 12 of the large aperture that communicates with e...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K17/168
CPCF16K17/168
Inventor 邬亚军孙建峰
Owner 邬子健
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