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Manhole door sealing box and tower-type supercritical boiler

A supercritical boiler and sealed box technology, applied in boiler water pipes, steam boilers, steam boiler accessories, etc., can solve problems such as crack failure of water-cooled wall tubes, prevent crack failure problems, ensure normal operation, and increase stress area. Effect

Pending Publication Date: 2021-11-30
北京华科同和科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a manhole door sealing box and a tower supercritical boiler, which effectively solves the problem that the water wall tube is prone to cracks due to the stress concentration at the four corners of the manhole door sealing box and the connection position between the upper and lower sides. Effectively improve the stability of the water wall and the safety of the boiler operation

Method used

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  • Manhole door sealing box and tower-type supercritical boiler
  • Manhole door sealing box and tower-type supercritical boiler
  • Manhole door sealing box and tower-type supercritical boiler

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Effect test

Embodiment approach 1

[0033] Such as Figure 1 to Figure 4 As shown, the present invention provides a manhole door sealing box, the manhole door sealing box is sealed and arranged at the manhole outside the water wall 5, and the manhole door sealing box includes a sealing box body 1 and a plurality of protective tiles 2 and a plurality of corner guards 3, wherein: each guard tile 2 is coated on the outside of each water wall tube 502 in the water wall 5, and the two opposite side edges of the guard tile 2 are respectively connected to the fins 501 located on both sides of the water wall tube 502 , and the protection tiles 2 are not directly connected with the water wall pipe 502, and each protection tile 2 is located at a position opposite to the edge of the sealed box body 1; each corner protection 3 is connected between two adjacent protection tiles 2, and the corner protection 3 Also not directly connected with the water-cooled wall pipe 502, each corner protector 3 is located at a position oppo...

Embodiment approach 2

[0048] Such as Figure 1 to Figure 3 As shown, the present invention provides a tower-type supercritical boiler, which includes a water-cooled wall 5 and the above-mentioned manhole door sealing box, and the manhole door sealing box is sealed and arranged at the manhole on the water-cooled wall 5 .

[0049] The characteristics and advantages of the tower supercritical boiler of the present invention are:

[0050] The tower-type supercritical boiler can effectively solve the problem that the water-cooled wall tube 502 on the water-cooled wall 5 is prone to cracks at the joint positions of the top corners of the manhole door sealing box and the upper and lower edges due to stress concentration. The technical problem of failure can effectively improve the stability of the water wall 5 and the safety of the operation of the tower supercritical boiler.

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Abstract

The invention relates to a manhole door sealing box and a tower-type supercritical boiler. The manhole door sealing box comprises a sealing box body, a plurality of protective tiles and a plurality of corner protectors, each protective tile covers the outer side of each water-cooled wall tube in a water-cooled wall, each corner protector is connected between two adjacent protective tiles, each protective tile is located at a position opposite to the edge of the sealing box body, the corner protectors are located at the positions opposite to the vertex angles of the sealing box body respectively, the edge of the sealing box body is connected with the protective tiles and fins in the water-cooled wall respectively in a sealed mode, and the vertex angles of the sealing box body are connected with the corresponding corner protectors respectively in a sealed mode. According to the manhole door sealing box, the technical problem that due to the arrangement of the manhole door sealing box, local stress on the connecting position of the sealing box and the water cooling wall is concentrated, and the water cooling wall is damaged is solved.

Description

technical field [0001] The present invention relates to the field of boilers, and further relates to a manhole door sealing box and a tower-type supercritical boiler, in particular to a manhole door sealing box and a tower-type supercritical boiler capable of preventing the water wall of a tower-type supercritical boiler from failing . Background technique [0002] Large-capacity utility boilers are usually equipped with manholes for maintenance, which brings convenience to operation, maintenance and commissioning. Each hole is arranged at a suitable part of the boiler according to requirements. All in sealed boxes. The manhole door sealing box device is an indispensable part of the external structure. It is generally welded on the outer surface of the water wall (the water wall is composed of multiple water wall tubes and fins connected between two adjacent water wall tubes). The main function of the boiler is to prevent the leakage of flue gas in the furnace and ensure t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B37/10F22B37/22F23M7/00
CPCF22B37/107F22B37/22F23M7/00
Inventor 孙黎君邢军何超王淼刘繁旭任旭刚周品谭来王英俊李恒达李京霏李腾温权马浩
Owner 北京华科同和科技有限公司
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