Knocking device for removing carbon deposition from coal gasifier

Abstract

The invention discloses a knocking device for removing carbon deposition from a coal gasifier. The knocking device comprises a support body, a guide sleeve, a pressing sleeve, a piston rod, a piston, a hammer body and a filter arranged in the support body, and is characterized in that: a piston rod seal is a cartridge seal structure arranged in the pressing sleeve, and the pressing sleeve and the guide sleeve are sealed by an end face seal gasket; an O-shaped seal ring and a piston rod V-shaped seal structure are arranged in the cartridge seal structure; the piston rod V-shaped seal structure comprises a piston rod V-shaped ring, a piston rod support ring, a push ring pressed against the tail end of the piston rod support ring, and a piston rod spring supported on the push ring; the piston rod support ring and the piston rod V-shaped ring are limited by a collar at the periphery; and the piston rod spring pre-tightens the piston rod V-shaped ring through the push ring. By arranging the cartridge seal structure, the seal is reliable, the service life of the knocking device is long, the knocking device is convenient to assemble and disassemble, and seal elements can be replaced under the condition that the whole knocking device is not detached after the seal fails.

Description

technical field [0001] The invention relates to a coal gasifier knocking device for removing carbon deposits. Background technique [0002] The coal gasifier is the core equipment of the "oil to coal" device and other similar devices. The percussion device is the key equipment to ensure the normal operation of the coal gasifier. The working temperature of the percussion device is 350°C and the working pressure is 6MPa. Its function is Through reciprocating motion and frequent knocking, prevent dust and carbon deposits in the furnace parts and furnace wall. The seal of the percussion device is mainly the piston seal and the piston rod seal. The piston seal is used to control the leakage of harmful gas along the piston in the coal gasifier; the piston rod seal is used to control the leakage of blocked gas along the piston rod and the leakage of harmful medium gas along the piston rod after the piston seal fails. The sealing of the percussion device is a key component of the ...

AI Technical Summary

Problems solved by technology

In terms of the sealing structure of the knocking device, at present, the piston seal of the knocking device of the coal gasifier in the world is to directly process the sealing ring groove on the piston of the knocking device, and use the Y-shaped sealing ring for sealing; the piston rod seal is used in the Several sealing ring grooves are directly processed on the guide sleeve of the percussion device, and O-rings are used for sealing. The sealing components are scattered. The problem with this structural form is that when the seal fails, the entire device needs to be dismantled. It is extremely inconvenient to assemble and disassemble the seals only after replacing them; moreover, due to the long-term operation of the percussion device, impurities such as coal ash accumulate on the surface of the percussion device parts, making it very difficult to disassemble the device, and it is almost impossible to replace the seals alone. Often the entire percussion device needs to be replaced

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