Boiler body welding method of thin metal gravity type heat pipe boiler

Abstract

The invention provides a boiler body welding method of a thin metal gravity type heat pipe boiler. The boiler body welding method comprises the following steps that S1, carrying and cutting are conducted; S2, a boiler body barrel is machined; S3, a splicing bottom plate is machined; S4, the boiler body barrel is welded; S5, the splicing bottom plate is welded; S6, the splicing bottom plate and an inner partition plate are welded; and S8, final assembly welding is conducted. According to the boiler body barrel and the splicing bottom plate, a 90-degree welding folded edge I and a 90-degree welding folded edge II are bent for end welding, overheating deformation in the welding process is prevented, assembly of all components is prevented from being affected, welding can be conducted through an automatic welding machine, the welding efficiency and quality are improved, the labor cost is reduced, welding firmness is good, and safety is high. During welding, water is injected into a water disc, so that overheating deformation caused by too high welding temperature is further prevented. A gravity type heat pipe hole wraps a gasket piece through a gasket piece sleeve, the thickness of the gravity type heat pipe hole is increased, a thick sealing ring can be adopted, the contact area is increased, and water leakage is not prone to occurring.

Description

technical field [0001] The invention relates to the field of boiler welding, in particular to a method for welding a boiler body of a thin metal gravity heat pipe boiler. Background technique [0002] The boiler is a kind of energy conversion equipment. The energy input to the boiler includes chemical energy and electric energy in the fuel, and the boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of heat energy. [0003] The gravity heat pipe is a heat exchange device, using a section of steel pipe, sealed at both ends, pumping out the air in the pipe to become a vacuum pipe, and then injecting a certain suitable medium into the pipe. When the lower end of the tube is heated, the medium in the tube evaporates and moves upward, and the evaporated gas is liquefied at the upper end and releases heat, and the liquefied liquid flows downward under the action of its own gravity. The heat is transported upwards. Selecting a suitable mediu...

AI Technical Summary

Problems solved by technology

[0007] The invention proposes a pot body welding method of a thin metal gravity heat pipe boiler. Firstly, it solves the problem that when the pot body of a gravity heat pipe boiler in the prior art is produced with thin plates, the welding is easily deformed and the weld is not firm. , there are potential safety hazards, and automatic welding is difficult, and the cost of manual welding is too high; secondly, it solves the problem of sealing between the sealing ring and the gravity heat pipe hole, and between the sealing ring and the gravity heat pipe when the thin plate is used for production. Poor performance, easy to leak defects

Images