Heated surface anti-abrasion membrane type water-cooled wall and preparation method thereof

A membrane-type water-cooling wall and heating surface technology, which can be used in combustion methods, lighting and heating equipment, combustion equipment, etc., can solve problems such as low heat exchange efficiency

Pending Publication Date: 2019-03-08
JIANGSU KEHUAN INNOVATIVE MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with other anti-abrasion laser cladding, surfacing welding anti-corrosion and thermal spraying anti-corrosion coating methods for water-cooled wall tubes, this method is low in cost, easy to operate, and has a good anti-corrosion effect. The disadvantage is that the heat transfer efficiency is low

Method used

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  • Heated surface anti-abrasion membrane type water-cooled wall and preparation method thereof
  • Heated surface anti-abrasion membrane type water-cooled wall and preparation method thereof
  • Heated surface anti-abrasion membrane type water-cooled wall and preparation method thereof

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Experimental program
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Effect test

Embodiment approach

[0061] As mentioned above, in the existing methods of anti-corrosion of boiler water wall tubes, the use of anti-wear tiles is also called anti-wear cover, anti-wear plate, anti-wear protection tile, anti-wear cover plate, anti-corrosion cover plate, boiler climbing tube, Compared with other anti-abrasion laser cladding, surfacing welding anti-corrosion and thermal spraying anti-wear and anti-corrosion coating methods, methods such as anti-wear pressure plate are low in cost, easy to operate, and have better anti-wear effects, but the heat transfer efficiency lower. In view of this, the inventors of the present invention have conducted a lot of research on the anti-corrosion technology of boiler water-cooled wall tubes by using anti-wear tiles.

[0062] The inventors have found through research that since the inner diameter of the anti-wear tile is usually 1-5 mm larger than the outer diameter of the water-cooled wall tube, the gap between the anti-wear tile and the tube wall ...

Embodiment 1

[0113] The anti-wear tile is joined to the finned tube heating surface of the membrane water cooling wall to manufacture a membrane water cooling wall with anti-abrasion heating surface.

[0114] (1) The heating surface of the finned tube 1 on the membrane water cooling wall is subjected to sandblasting and roughening treatment, so that the surface roughness of the finned tube's heating surface is 40 microns (PCWI 0918 anchor pattern instrument, Australian PCWI company);

[0115] (2) By welding on the fins 11 of the finned tube 1, the expanded metal mesh 2 (the material is 1Gr25Ni20Si2 or Ni60A, the thickness is 1mm) having the same size and shape as the heating surface of the finned tube 1 is welded to the finned tube 1. The heating surface of sheet tube 1, such as figure 2 shown;

[0116] (3) Mix KN1000 anti-resistant brand high-temperature and wear-resistant adhesive or silicon carbide particles with 1280°C high-temperature-resistant sealant at a ratio of 3:1 and use it a...

Embodiment 2

[0128] The anti-wear tile is joined to the finned tube heating surface of the membrane water cooling wall to manufacture a membrane water cooling wall with anti-abrasion heating surface.

[0129] (1) The heating surface of the finned tube 1 on the membrane water cooling wall is subjected to sandblasting and roughening treatment, so that the surface roughness of the finned tube's heating surface is 75 microns (PCWI 0918 anchor pattern instrument, Australian PCWI company);

[0130] (2) By welding on the fins 11 of the finned tube 1, the expanded metal mesh 2 (the material is 1Gr25Ni20Si2 or Ni60A, the thickness is 5mm) having the same size and shape as the heating surface of the finned tube 1 is welded to the finned tube 1. The heating surface of sheet tube 1, such as figure 2 shown;

[0131] (3) Press the high-temperature-resistant composite adhesive reinforced by silicon carbide particles into the grid of the expanded metal 2 welded on the heating surface of the fin tube 1 b...

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Abstract

The invention relates to a heated surface anti-abrasion membrane type water-cooled wall and a preparation method thereof. According to the preparation method, an anti-abrasion tile is fixed on the heated surface of a water-cooled wall pipe through clamping a silicon carbide particle reinforced adhesive between the heated surfaces of fin tubes which form a membrane type water cooling wall and the anti-wear tile, so as to form an anti-abrasion layer, and therefore the heated surface anti-abrasion membrane type water-cooled wall is manufactured, a gap is formed between the fin tube and the anti-abrasion tiles in a tight combination mode, so that the heated surface of the membrane water-cooled wall is resistant to corrosion and abrasion, high heat exchange efficiency is achieved, and the service life of the membrane type water cooling wall can be remarkably prolonged. Compared with an existing water-cooled wall tube anti-abrasion method, the preparation method has the advantages of being low in energy consumption, simple in operation process and equipment, high in construction speed and high in efficiency, low in the cost, high in the heat exchange efficiency of the water-cooled wall tube, and long in the service life of the coating and the like; and the preparation method have the advantages that the frequency and cost of maintenance of the water-cooled wall tube can be reduced, and the economic benefits of enterprises can be improved.

Description

technical field [0001] The invention belongs to the technical field of thermal pipeline protection, and relates to a membrane-type water-cooled wall for preventing abrasion of a heating surface and a preparation method thereof. Background technique [0002] In the actual operation of the thermal company’s equipment, the water-cooled wall tubes of the boiler convection heat pipes are widely used. During the use process, the water-cooled wall tubes are directly exposed and are easily scoured by the burned coal particles and eroded by the corrosive gas in the boiler. Long-term After erosion and erosion, the water-cooled wall tubes are worn and corroded to varying degrees. In severe cases, the tubes burst, which not only affects the operation of the equipment, but also cannot guarantee the safety. It is necessary to replace the water-cooled wall tubes frequently to ensure the normal operation of the equipment. For the operator to replace the water-cooled wall pipe, the replaceme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23M5/08B23P15/00
CPCF23M5/08B23P15/00
Inventor 曲作鹏陈威叶怀宇张军战何跃唐红雨董长青陈大智李晓娅
Owner JIANGSU KEHUAN INNOVATIVE MATERIAL CO LTD
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