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Shell water boiler

A hot water boiler and pot shell technology, which is applied in the field of pot shell hot water boilers, can solve the problems of large thermal resistance of scale, hinder the cooling of tube sheets, and cracks, so as to prevent the deposition of scale, reduce the amount of bending, and facilitate processing Effect

Inactive Publication Date: 2012-07-04
沈阳锅炉制造有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large thermal resistance of scale, it hinders the cooling of the tube sheet by water. The tube sheet has been working under high-temperature flue gas for a long time, and local supercooled boiling occurs. Under the action of this alternating stress, the tube sheet eventually cracks, causing emergency shutdown

Method used

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Embodiment Construction

[0010] The present invention includes a cylinder body 1 of the boiler, the two ends of the cylinder body 1 are tube plates 5, the front end of the cylinder body 1 is provided with a water outlet pipe 7, the smoke pipe 6 is between the two tube plates 5, and behind the water outlet pipe 7 of the cylinder body 1 A water baffle 3 is arranged on the inner wall of the barrel, and a through hole 4 is arranged on the water baffle 3 corresponding to the smoke pipe 6 through which the smoke pipe 6 passes.

[0011] The outer edge of the water baffle 3 can be provided with a connecting arc plate 2; the water baffle 3 is connected with the inner wall of the cylinder body 1 through the connecting arc plate 2, and the installation is more convenient.

[0012] The number of connecting arc plates 2 is set to 8, which are evenly distributed on both sides of the water baffle plate 3; the force is uniform and the structure is stable.

[0013] The lower end of the water baffle 3 is set as a strai...

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Abstract

The invention discloses a shell water boiler and relates to the improvement of the structure of a shell water boiler. The shell water boiler provided by the invention is simple in structure, and safe and reliable in water circulation. The shell water boiler comprises a boiler barrel, the two ends of the barrel are pipe plates, the front end of the barrel is provided with a water outlet pipe, and a flue pipe is arranged between the two pipe plates; and the shelled water boiler is structurally characterized in that the inner wall of the barrel behind the water outlet pipe is provided with a water-stop plate, the water-stop plate is provided with a through hole corresponding to the flue pipe, and the flue pipe passes through the through hole.

Description

technical field [0001] The invention relates to the improvement of the structure of the shell type hot water boiler. Background technique [0002] In the existing shell-type hot water boiler, when the water quality index does not meet the GB 1576 "Industrial Boiler Water Quality" standard, after a period of operation, the tube sheet located in the high temperature area is prone to tube sheet cracks. When the furnace was stopped for inspection, it was found that there was a large amount of scale accumulation around the crack, and the thickness of the scale was as high as about 100 mm. Due to the large thermal resistance of scale, it hinders the cooling of the tube sheet by water. The tube sheet has been working under high-temperature flue gas for a long time, and local supercooled boiling occurs. Under the action of this alternating stress, the tube sheet eventually cracks, causing emergency shutdown. Contents of the invention [0003] The present invention aims at the ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H1/22
Inventor 赵艳华
Owner 沈阳锅炉制造有限责任公司
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