Traditional Culture Encyclopedia - The 24 Solar Terms - Why are there two pressure gauges on the gas-cut acetylene bottle? How much adjustment is appropriate?
Why are there two pressure gauges on the gas-cut acetylene bottle? How much adjustment is appropriate?
The other pressure gauge is the working pressure, which can be adjusted according to the actual pressure. Because it is a pressure reducer, the working pressure must be less than the pressure oxygen in the bottle.
15℃, the filling pressure is 1.55 MPa, and the hydrostatic test pressure is 6 MPa. When in use and storage, it should be placed upright to avoid vibration and impact, and to prevent the porous filler from appearing gaps. Filling shall be carried out in two stages, the rest time after the first inflation shall not be less than 8 hours, and then the second inflation shall be carried out, and the ultimate pressure after the two inflations shall not be greater than the provisions in the table below.
Extended data
Acetylene can be used for lighting, welding and cutting metal (oxyacetylene flame), and it is also the basic raw material for manufacturing acetaldehyde, acetic acid, benzene, synthetic rubber and synthetic fiber.
Acetylene can produce high temperature when burning, and the flame temperature of oxyacetylene can reach about 3200℃, which is used for cutting and welding metals. Supplied with proper amount of air, it can burn completely and emit bright white light, which can be used as lighting source in places where electric lights are not popular or there is no electricity.
Acetylene is very active in chemistry and can react with many reagents. Before 1960s, acetylene was the most important raw material for organic synthesis, and it is still one of the important raw materials. If hydrogen chloride, hydrocyanic acid and acetic acid are added, raw materials for producing polymers can be generated.
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