Fuel-saving gas welding device

Abstract

The present invention relates to a fuel saving gas welding apparatus that comprises: an oxygen gas supply unit that supplies an oxygen gas to a welding torch (3); a fuel gas supply unit that supplies a fuel gas to the welding torch (3); an ignition gas supply unit that supplies flame required for the ignition of the welding torch (3); and a control means (2) that discharges the fuel gas with a delay of 0.2 to 1 second after the oxygen gas to prevent reverse flow and flash back, wherein the fuel gas (e.g., acetylene gas) is supplied with a delay of 0.2 to 1 second after the oxygen gas by using a delay timer (T), a relay (Ry), a switch (12), and solenoid valves (S1) (S2), which makes it possible to prevent reverse flow and flash back in the welding torch (3), to significantly reduce the fuel gas by 30% or more, and to enhance the productivity by 30% or more.

Description

technical field [0001] The invention relates to a fuel-saving gas welding device, in particular, a fuel-saving gas welding device that delays the supply of gas compared to oxygen to prevent gas backflow and backfire, greatly saves gas and improves productivity. Background technique [0002] Generally, oxygen welding is mainly used when welding or cutting metal or nonmetal. [0003] The oxygen welding is to discharge the mixed gas of oxygen and acetylene or oxygen and hydrogen to the burner (tip) of the welding torch (Welding Torch), ignite the discharged mixed gas, and then weld or cut the part to be welded. [0004] When the traditional welding torch enters the oxidizing gas in the mixing chamber, namely oxygen, or the external air flowing in through the burner is reversed and backfired through the gas channel and flows into the inside of the fuel tank (acetylene tank), it is easy to combine with oxygen or air to cause an explosion. For these phenomena, a backfire prevente...

AI Technical Summary

Problems solved by technology

[0004] When the traditional welding torch enters the oxidizing gas in the mixing chamber, namely oxygen, or the external air flowing in through the burner is reversed and backfired through the gas channel and flows into the inside of the fuel tank (acetylene tank), it is easy to combine with oxygen or air to cause an explosion. For these phenomena, a backfire preventer such as a check valve is attached to the fuel tank to prevent gas backflow and backfire during welding, but it lacks safety, and explosion accidents still occur frequently. Ignition with a lighter, etc., and the work time is prolonged, which reduces productivity and further increases the loss of fuel gas

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