An anti-tempering hydrogen welding torch

Abstract

The invention discloses a tempering prevention hydrogen welding gun, which comprises a handle, an oxygen inlet pipe, a hydrogen inlet pipe, an oxygen outlet pipe, a hydrogen outlet pipe, a nozzle, an oxygen regulating valve and a hydrogen regulating valve. An oxygen passage and a hydrogen passage are respectively arranged in the handle, one end of the oxygen passage is connected with the oxygen inlet pipe, the other end of the oxygen passage is communicated with the oxygen outlet pipe, the hydrogen passage is connected with the hydrogen inlet pipe, the other end of the hydrogen passage is communicated with the hydrogen outlet pipe, the oxygen regulating valve is installed at the connecting position of the oxygen passage and the oxygen outlet pipe, the hydrogen regulating valve is installed at the connecting position of the hydrogen passage and the hydrogen outlet pipe, the hydrogen outlet pipe and the oxygen outlet pipe are both connected with the nozzle, the middle of the nozzle is provided with a hydrogen outlet, an oxygen outlet is arranged on the periphery of the nozzle, the hydrogen outlet is connected with the hydrogen outlet pipe, and the oxygen outlet is connected with the oxygen outlet pipe. By adopting the technical scheme, the tempering phenomenon cannot happen, and the welding gun is safe and reliable. Hydrogen is used to replace acetylene and burned without producing harmful gas, and does not pollute the environment. Temperature is simply and conveniently adjusted, and the adjustable range of the burning temperature is large.

Description

technical field [0001] The invention belongs to the field of welding technology, in particular to an anti-tempering hydrogen welding torch. Background technique [0002] Welding gun is a tool that uses oxygen and medium and low pressure acetylene as heat source to weld or preheat ferrous or non-ferrous metal workpieces, and is also the main tool for gas welding operations. Its principle is to uniformly mix combustible gas and oxygen in a certain proportion, and spray it from the welding nozzle at a certain speed to form a flame with certain energy efficiency, certain composition, suitable for welding requirements and stable combustion, and perform gas welding on the workpiece. [0003] Once the muzzle of this welding torch is blocked or the velocity of the gas mixture is lower than the combustion velocity of the flame, or the proportion of oxygen or air in the gas mixture is too large, it is easy to cause flashback and the flame will return to the inside of the gas tank, cau...

AI Technical Summary

Problems solved by technology

[0003] Once the gun muzzle is blocked or the mixed gas flow rate is lower than the flame burning speed, or the proportion of oxygen or air in the mixed gas is too large, it is easy to cause backfire and the flame will return to the gas tank, causing danger or even explosion.

[0004] Existing anti-tempering devices and methods are mainly to install anti-tempering valves or check valves in welding pipelines. Although these methods can prevent the occurrence of flames entering the gas tank, it is inevitable that they will be damaged during use. The welding torch will be extinguished due to tempering, which will affect the efficiency of use

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