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Sealing structure for valve body of long telescopic soot blower

A technology of sealing structure and soot blower, which is applied in the direction of shaft seal, valve details, valve device, etc., can solve problems such as delay in production, poor sealing performance of valve body, and influence on the use effect of soot blower, so as to ensure production and good quality Compression, to ensure the effect of stable progress

Inactive Publication Date: 2015-02-11
江苏焱鑫科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the poor sealing performance of the valve body of the current long telescopic soot blower, it will affect the use effect of the soot blower, thus delaying the production

Method used

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  • Sealing structure for valve body of long telescopic soot blower

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Embodiment Construction

[0019] see figure 1 , the present invention relates to a long telescopic soot blower valve body sealing structure, which includes a valve body 2, a guide rod 7 and a guide sleeve 1, the valve body 2 is arranged outside the middle of the guide sleeve 1, and the guide rod 7 A packing 3 is provided between the guide sleeve 1 and the upper end of the packing 3 is provided with a packing gland 4. A stepped gland 5 is provided outside the upper end of the guide sleeve 1. The inner flange of the gland 5 is in contact with the packing pressure. The cover 4 is offset, and the gland 5 is sleeved with a spring 6 , and the lower end of the spring 6 is offset against the outer flange of the gland 5 .

[0020] Working principle: Under the action of the spring 6, the gland 5 drives the packing gland 4 to compress the packing 3, so that the packing 3 has a good degree of compression and ensures that the valve body 2 is sealed without leakage.

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Abstract

The invention relates to a sealing structure for a valve body of a long telescopic soot blower. The sealing structure comprises a valve body (2), a guide rod (7) and a guide sleeve (1), wherein the valve body (2) is arranged on the outer side of the middle of the guide sleeve (1); packing (3) is arranged between the guide rod (7) and the guide sleeve (1); a packing gland (4) is arranged at the upper end of the packing (3); a stepped gland (5) is arranged on the outer side of the upper end of the guide sleeve (1); an inner flange of the gland (5) is propped against the packing gland (4); a spring (6) sleeves the gland (5); the lower end of the spring (6) is propped against the outer flange of the gland (5). According to the sealing structure for the valve body of the long telescopic soot blower, disclosed by the invention, under the action of the spring, the gland drives the packing gland to press the packing, so that the packing has good compactness, sealing of the valve body without leakage is guaranteed, and the use effect of the soot blower and stable production are guaranteed.

Description

technical field [0001] The invention relates to a valve body sealing structure of a long telescopic soot blower, which belongs to the technical field of petrochemical equipment. Background technique [0002] Long telescopic sootblowers are used to blow out accumulated soot in superheater and reheater tube bundles. During soot blowing, the soot blowing pipe and nozzle rotate while extending into the flue. The nozzle adopts the Laval nozzle type, the injection speed of steam or air exceeds the speed of sound, and the effective soot blowing radius is about 1.5 to 2 meters. [0003] Due to the poor sealing performance of the valve body of the current long telescopic soot blower, the use effect of the soot blower will be affected, thereby delaying the production. Contents of the invention [0004] The object of the present invention is to overcome the above disadvantages and provide a long telescopic soot blower valve body sealing structure with good sealing performance. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K41/02F16K41/10
CPCF16K41/02
Inventor 周国华朱海航曹惠忠张春华刘霞萍戴俊平王洁
Owner 江苏焱鑫科技股份有限公司
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