Lengthening and shortening type steam soot blower
A long telescopic and soot blower technology, which is applied to the treatment of combustion products, combustion methods, and removal of solid residues, etc., can solve problems such as wear and easy leakage of sealing structures, so as to overcome leakage problems, avoid steam leakage, and avoid further leaked effect
Inactive Publication Date: 2016-12-07
洛阳万山高新技术应用工程有限公司
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to overcome the problems of easy leakage and wear of the existing sealing structure, and improve a long telescopic steam soot blower with reliable sealing.
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Embodiment Construction
[0016] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0017] A long telescopic steam soot blower, including a spiral and axially movable blowing pipe 1 and an air supply pipe 2 sleeved in the blowing pipe. The circumference of the blowing pipe 1 is provided with an air injection hole 4; The opening on 3 penetrates into the boiler, and a first sealing mechanism is provided between the blowing pipe 1 and the gas supply pipe 2, and a second sealing mechanism is provided between the blowing pipe 1 and the opening of the furnace wall 3. The first sealing mechanism includes a follower seal 5, an auxiliary seal 6 and a sealing packing assembly 7 arranged in sequence, and the follower seal 5 consists of an outer ring body 501 attached to the step surface of the inner wall of the blowing pipe and An inner sealing ring 502 is formed. The inner surface of the outer ring body 501 is provided with an annular sealing g...
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Provided is a lengthening and shortening type steam soot blower. A first sealing mechanism is arranged between a spray-blowing pipe and an air supply pipe. A second sealing mechanism is arranged between the spray-blowing pipe and a furnace wall. The first sealing mechanism comprises a follow-up sealing piece, an auxiliary sealing piece and a sealing filler assembly. An inner sealing ring of the follow-up sealing piece is arranged in an annular sealing groove of an outer ring body and is in clearance fit with the outer wall of the air supply pipe. A flexible sealing ring of the second sealing mechanism is arranged in a sealing cavity of a sealing cavity assembly. An interval slot in the inner side face of the inner sealing ring divides the sealing plane into independent sealing areas. The auxiliary sealing piece is composed of an annular fixing block, a wedge-shaped push plate and a rubber sealing ring. The wedge-shaped push plate is arranged in a wedge-shaped hole in the side face of the annular fixing block. The wedge-shaped face of the wedge-shaped push plate makes contact with the wedge-shaped inner wall of the wedge-shaped hole, and the other side opposite to the wedge-shaped face makes contact with the rubber sealing ring. Abrasion, caused by relative movement, to the sealing pieces is reduced, the problem of leakage caused by squeezing deformation is solved, and the reliability and airtightness of the sealing structure of the steam soot blower are improved.
Description
technical field [0001] The invention relates to a steam soot blower for a boiler of a coal-fired unit, in particular to a long telescopic steam soot blower. Background technique [0002] The large-scale thermal power plants in my country are all coal-fired units. The ash accumulation and slagging on the heating surface of the coal-fired unit boilers not only affect the economy of the boilers, but also endanger the safe operation of the boilers in severe cases. Therefore, reliable soot blowing technology is essential . The width of the horizontal flue of a large utility boiler is generally between 10 and 20m, and only the long telescopic steam sootblower is more suitable. The working process of the steam soot blower is that the working trajectory of the lance tube of the steam soot blower is a uniform spiral axial movement in the furnace, and the steam supply pipe of the steam soot blower is stationary to supply soot blowing steam to the lance tube of the steam soot blower. ...
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IPC IPC(8): F23J3/02
CPCF23J3/026F23J2700/001
Inventor 曲万山任秀琴曲清亮曲青青
Owner 洛阳万山高新技术应用工程有限公司