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Downcomer bottom inspection device

An inspection device and inspection hole technology, which is applied to boiler cleaning devices, steam boiler accessories, steam boiler components, etc., can solve problems such as difficult maintenance, sealing plate welding joints, etc., and achieve the effect of easy inspection and maintenance

Pending Publication Date: 2022-03-04
JIANGSU TAIHU BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the internal pressure and gravity of the steam drum, the pressure of the downcomer is higher than the working pressure of the steam drum. When the boiler pressure fluctuates, it will cause problems with the welding joints of the sealing plate and make maintenance difficult.

Method used

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Embodiment Construction

[0020] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] The technical scheme adopted in the present invention is:

[0022] A device for checking the bottom of the downcomer 2, such as figure 1 and figure 2 As shown, bottom plate 1 is included, bottom plate 1 is also provided with descending pipe 2, saturated water 3 is inside descending pipe 2, header sealing plate 4 is also arranged inside descending pipe 2, and header sealing plate 4 is arranged obliquely toward sewage pipe 7 , and the pipe wall of the downcomer 2 below the header sealing plate 4 is also provided with an inspection hole 5, branch pipes 6 are also provided on both sides of the downcomer 2, and a sewage discharge pipe 7 is also provided between the downcomer 2 between the branch pipes 6, A sealing sleeve 8 is also provided between the base and the downcomer 2 , and a groove 9 is also provided around the bottom plate 1 a...

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Abstract

The invention discloses a downcomer bottom inspection device, and aims to provide a downcomer bottom inspection device convenient to inspect and maintain, the downcomer bottom inspection device is characterized in that the downcomer bottom inspection device comprises a bottom plate, a downcomer is further arranged on the bottom plate, saturated water is contained in the downcomer, and a header sealing plate is further arranged in the downcomer; and an inspection hole is also formed in the wall of the downcomer below the header sealing plate.

Description

technical field [0001] The invention relates to the field of boiler equipment, in particular to a device for inspecting the bottom of a downcomer. Background technique [0002] The downcomer is generally placed outside the furnace, not heated, and insulated to reduce heat loss. The function of the downcomer is to continuously send the water in the steam drum to the lower header to supply the water wall to maintain normal water circulation. The structure of the downcomer, the size of the tube section and the precipitation all directly affect the reliability of the boiler water circulation. There are two kinds of downpipes: small-diameter scattered downpipe and large-diameter concentrated downpipe. The high-pressure, ultra-high pressure and subcritical pressure natural circulation boilers produced all use large-diameter downcomers, and their diameters are generally 325-426mm. [0003] From the perspective of ensuring the safety of the water cycle, it is advantageous that th...

Claims

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Application Information

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IPC IPC(8): F22B37/38F22B37/42F22B37/54
CPCF22B37/54F22B37/38F22B37/421
Inventor 潘宇峰田忠权徐传香强逸
Owner JIANGSU TAIHU BOILER
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