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Water heating boiler

A technology for hot water boilers and boilers, which is applied in the field of boilers, can solve the problems of increased frictional resistance of water circulation, reduced pressure head, scaling, etc., and achieves the effects of avoiding boiler vaporization, being difficult to scale, and reducing scaling.

Active Publication Date: 2015-05-20
董珊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the water circulation of the water wall of the existing hot water boiler is a natural circulation, because the water velocity in the heated riser of the water wall in the natural circulation is low, and the existence of suspended solids makes the severity of the natural circulation poor. The formed pressure head decreases, the natural circulation rate decreases, causing the suspended particles in the water to adhere to the inner wall of the high-temperature heating tube and scale, the friction resistance of the water cycle increases, the water flow decreases, and the tube bursts, thereby providing a hot water boiler

Method used

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specific Embodiment approach 1

[0007] Specific implementation mode one: combine figure 1 Describe this embodiment, a hot water boiler in this embodiment includes an upper drum 14, a lower drum 2, a first lower header 1, a second lower header 28, a third lower header 27, a fourth lower header Box 25, convection tube bundle 6, front wall water cooling wall descending pipe 23, first side wall water cooling wall descending pipe 15, second side wall water cooling wall descending pipe 13, rear wall water cooling wall descending pipe 8, first ascending pipe 3, the second Two ascending pipes 4, the third ascending pipe 29 and the fourth ascending pipe 24, the upper drum 14 and the lower drum 2 are communicated by the convection tube bundle 6, and the two ends of the rear wall water wall descending pipe 8 are connected with the upper drum 14 and the second ascending pipe respectively. The lower header 1 is connected, the two ends of the first riser 3 are respectively connected with the upper drum 14 and the first lo...

specific Embodiment approach 2

[0009] Specific implementation mode two: combination figure 1 The present embodiment will be described. The first control valve 16 in the present embodiment is a quick opening characteristic control valve. This setting is used for two-position control, which is convenient for the chain control of control valves and pipeline pumps. Others are the same as the first embodiment.

specific Embodiment approach 3

[0010] Specific implementation mode three: combination figure 1 The present embodiment will be described. The second control valve 20 in the present embodiment is a quick opening characteristic control valve. This setting is used for two-position control, which is convenient for the chain control of control valves and pipeline pumps. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a water heating boiler and relates to a boiler. In an existing water heating boiler, the water circulation of a water cold wall is natural circulation, the water speed in a heated lifting pipe of the water cold wall in the natural circulation is low, pressure head formed by the gravity difference in the natural circulation is reduced due to the existence of suspension solids, the speed of the natural circulation is consequently reduced, particulate matters in water are attached to the inner wall of a high-temperature heated pipe so as to form scale, the water circulation frictional resistance is increased, the water flow is reduced, and the pipe is exploded finally. Aiming at the problem of the existing water heating boiler, the water heating heater provided by the invention is characterized by comprising a first by-pass pipe, a second by-pass pipe, a third by-pass pipe, a fourth by-pass pipe, a first pipeline pump, a second pipeline pump, a third pipeline pump, a fourth pipeline pump, a first control valve, a second control valve, a third control valve and a fourth control valve, wherein the two ends of the third by-pass pipe are communicated with a down pipe of a water cold wall of a second side wall, and the third by-pass pipe is provided with the third pipeline pump; and the fourth pipeline pump is communicated with a down pipe of a water cold wall of a rear wall. The water heating boiler provided by the invention is used for water circulation of the cold walls of the water heating boiler.

Description

technical field [0001] The invention relates to a boiler, in particular to a hot water boiler in which the water circulation of the water wall adopts forced circulation. Background technique [0002] At present, the development of district heating is growing rapidly. The capacity of a single unit of a hot water boiler is gradually increasing. For a large-capacity boiler, the furnace has a large size. The content of suspended solids in net water exceeds the national standard too much. Due to the low water velocity in the rising pipe heated by the water wall in the natural circulation system, there is no self-cleaning ability, and the existence of suspended solids reduces the pressure head formed by the gravity difference of natural circulation. Further reducing the natural circulation speed, these factors are more likely to cause suspended particles in the water to adhere to the inner wall of the high-temperature heating tube and scale, resulting in increased water circulati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H1/40
Inventor 董珊
Owner 董珊
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