Repair method of high energy igniter oil gun

Abstract

The invention relates to the field of maintenance of high-energy igniters, in particular to a method for repairing an oil gun of a high-energy igniter. The method for repairing the high-energy igniter oil gun disclosed by the present invention includes the following steps: material selection: selecting a welding wire that matches the welding base material of the high-energy igniter oil gun; cleaning and assembly: cleaning the copper end of the high-energy igniter oil gun and For the welding part of the steel joint, the copper end and the steel joint are combined; welding: the copper end and the steel joint are welded by argon tungsten arc welding, the diameter of the welding wire is 2.2-2.6mm, and the welding speed is 40-60mm / min. The welding current is 50-80A, the arc voltage is 12-15V, and the flow rate of argon gas is 10-15L / min. In this high-energy igniter oil gun repair method, argon tungsten arc welding is used for welding. By selecting appropriate welding parameters, the heat can be effectively prevented while ensuring sufficient heat input at the welding place of the copper end and ensuring welding quality. Burn through the pipe wall or scald the lined copper end.

Description

technical field [0001] The invention relates to the field of maintenance of high-energy igniters, in particular to a method for repairing an oil gun of a high-energy igniter. Background technique [0002] The high-energy igniter oil gun device is mainly composed of gun head, gun core, inner tube, outer tube, insulating secondary sleeve, high-voltage shielded cable, oil connector, gas connector and plug. It can be directly used to ignite natural gas, liquefied petroleum gas, kerosene, diesel, heavy oil, residual oil, etc. The high-energy ignition gun has strong anti-pollution ability, can ignite in water, is suitable for various complex environments, and is widely used in thermal power generation industry. The end of the high-voltage shielded cable heat dissipation shell and the outer pipe joint of the oil gun are brass on one side, and ordinary low-carbon steel on the other. The welding of copper and steel is more difficult than the welding of steel and steel, and copper a...

AI Technical Summary

Problems solved by technology

In the existing copper-steel welding, due to the good thermal conductivity of the copper material, in order to enable the copper side to obtain sufficient heat and prevent defects in the weld, a large welding heat input specification should be adopted, but for high-energy igniter oil guns In other words, the wall thickness of the copper pipe and steel pipe is relatively thin (<2.0mm), and there is an insulating secondary sleeve hose inside. Large heat input can easily burn through the pipe wall or scald the inner insulating secondary sleeve hose. This is a difficult point in the repair of high-energy igniter oil guns

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