CN103175297B - Water heating boiler - Google Patents
Water heating boiler Download PDFInfo
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- CN103175297B CN103175297B CN201310141758.2A CN201310141758A CN103175297B CN 103175297 B CN103175297 B CN 103175297B CN 201310141758 A CN201310141758 A CN 201310141758A CN 103175297 B CN103175297 B CN 103175297B
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- control valve
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- comer
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- bypass pipe
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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
The present invention relates to a kind of boiler, the water circulation being specifically related to a kind of water-cooling wall adopts the hot-water boiler of forced circulation.
Background technology
At present, district heating development is swift and violent constantly increases.The single-machine capacity of hot-water boiler increases gradually, for jumbo boiler, its size of burner hearth is very large, water-cooling wall be heated tedge be not only unit are affected by hot loading increase, and the total heat duties of single pipe also increases, once suspend in hot net water, to exceed GB too much for solid content, because the water speed in tedge of being heated of water-cooling wall in natural cycle system is lower, there is no self-purification ability, and the pressure head that the existence of suspension solid content makes the severe difference of Natural Circulation be formed reduces, further reduction Natural Circulation speed, these factors more easily cause suspended particulates in water to be attached to high-temperature heating inside pipe wall and fouling, water circulation frictional resistance is caused to increase, discharge reduces, and then cause booster.
Summary of the invention
The water circulation that the object of the invention is the water-cooling wall for solving existing hot-water boiler is Natural Circulation, because in the tedge that is heated of water-cooling wall in Natural Circulation, water speed is lower, and the pressure head that the existence of suspension solid content makes the severe difference of Natural Circulation be formed reduces, Natural Circulation speed declines, cause suspended particulates in water to be attached to high-temperature heating inside pipe wall and fouling, water circulation frictional resistance increases, and discharge reduces, and then the problem of booster, and then provide a kind of hot-water boiler.
The present invention is the technical scheme taked that solves the problem: a kind of hot-water boiler of the present invention comprises upper drum, lower drum, first lower header, second lower header, 3rd lower header, 4th lower header, convection bank, front water wall down-comer, first side water wall down-comer, second side water wall down-comer, rear water wall down-comer, first tedge, second tedge, 3rd tedge and the 4th tedge, upper drum is communicated with by convection bank with lower drum, the two ends of rear water wall down-comer are communicated with the first lower header with upper drum respectively, the two ends of the first tedge are communicated with the first lower header with upper drum respectively, the two ends of the second tedge are communicated with the first lower header with upper drum respectively, the two ends of the 3rd tedge are communicated with the first lower header with upper drum respectively, the two ends of the 4th tedge are communicated with the 4th lower header with upper drum respectively, the two ends of the second side water wall down-comer are communicated with the second lower header with upper drum respectively, the two ends of the first side water wall down-comer are communicated with upper drum with the 3rd lower header respectively, the two ends of front water wall down-comer are communicated with the 4th lower header with upper drum respectively, and described hot-water boiler also comprises the first bypass pipe, second bypass pipe, 3rd bypass pipe, 4th bypass pipe, first tubing pump, second pipe pump, 3rd tubing pump, 4th tubing pump, first control valve, second control valve, 3rd control valve and the 4th control valve, the two ends of the first bypass pipe are communicated with the first side water wall down-comer, first bypass pipe is provided with the first tubing pump, the the first side water wall down-comer being positioned at the two ends of the first bypass pipe is provided with the first control valve, and the electrical signal of the first control valve is connected with the electric signal input end of the first tubing pump, the two ends of the second bypass pipe are communicated with front water wall down-comer, second bypass pipe is provided with second pipe pump, the front water wall down-comer being positioned at the two ends of the second bypass pipe is provided with the second control valve, and the electrical signal of the second control valve is connected with the electric signal input end of second pipe pump, the two ends of the 3rd bypass pipe are communicated with the second side water wall down-comer, 3rd bypass pipe is provided with the 3rd tubing pump, the the second side water wall down-comer being positioned at the two ends of the 3rd bypass pipe is provided with the 3rd control valve, and the electrical signal of the 3rd control valve is connected with the electric signal input end of the 3rd tubing pump, the two ends of the 4th bypass pipe are communicated with rear water wall down-comer, 4th bypass pipe is provided with the 4th tubing pump, the rear water wall down-comer being positioned at the two ends of the 4th bypass pipe is provided with the 4th control valve, and the electrical signal of the 4th control valve is connected with the electric signal input end of the 4th tubing pump.
The invention has the beneficial effects as follows: the water-cooling wall in hot water boiler with natural circulation is changed into forced circulation by Natural Circulation by the present invention, and and the convection bank be arranged between upper drum and lower drum form new hot-water boiler, hot-water boiler of the present invention, convection bank is natural water circulation, and water-cooling wall is forced water circulation.Once have a power failure suddenly, this forced water circulation changes into Natural Circulation automatically, can ensure that the water-cooling wall water in tedge that is heated maintains and continues flowing, cycle rate rises, in water, to be attached to high-temperature heating tedge inwall less scaling due to forced flow for suspended particulates, water circulation frictional resistance declines, and 5 ~ 30 newton that frictional resistance compares original Natural Circulation reduce 10% ~ 20%; Discharge increases, and flow is compared original natural circulation flow and is doubled and redoubled, and flow compares the 5m of original Natural Circulation
3/ h ~ 2m
3/ h adds 20% ~ 40%; Because water-cooling wall adopts forced circulation, the fouling in pipe is reduced, efficiently avoid the problem of booster, it also avoid boiler vaporization simultaneously.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Detailed description of the invention
Detailed description of the invention one: composition graphs 1 illustrates present embodiment, a kind of hot-water boiler of present embodiment comprises upper drum 14, lower drum 2, first lower header 1, second lower header 28, 3rd lower header 27, 4th lower header 25, convection bank 6, front water wall down-comer 23, first side water wall down-comer 15, second side water wall down-comer 13, rear water wall down-comer 8, first tedge 3, second tedge 4, 3rd tedge 29 and the 4th tedge 24, upper drum 14 is communicated with by convection bank 6 with lower drum 2, the two ends of rear water wall down-comer 8 are communicated with the first lower header 1 with upper drum 14 respectively, the two ends of the first tedge 3 are communicated with the first lower header 1 with upper drum 14 respectively, the two ends of the second tedge 4 are communicated with the first lower header 1 with upper drum 14 respectively, the two ends of the 3rd tedge 29 are communicated with the first lower header 1 with upper drum 14 respectively, the two ends of the 4th tedge 24 are communicated with the 4th lower header 25 with upper drum 14 respectively, the two ends of the second side water wall down-comer 13 are communicated with the second lower header 28 with upper drum 14 respectively, the two ends of the first side water wall down-comer 15 are communicated with upper drum 14 with the 3rd lower header 27 respectively, the two ends of front water wall down-comer 23 are communicated with the 4th lower header 25 with upper drum 14 respectively, described hot-water boiler also comprises the first bypass pipe 19, second bypass pipe 22, 3rd bypass pipe 11, 4th bypass pipe 5, first tubing pump 17, second pipe pump 21, 3rd tubing pump 10, 4th tubing pump 7, first control valve 16, second control valve 20, 3rd control valve 12 and the 4th control valve 9, the two ends of the first bypass pipe 19 are communicated with the first side water wall down-comer 15, first bypass pipe 19 is provided with the first tubing pump 17, the electrical signal the first side water wall down-comer 15 being positioned at the two ends of the first bypass pipe 19 being provided with the first control valve 16, first control valve 16 is connected with the electric signal input end of the first tubing pump 17, the two ends of the second bypass pipe 22 are communicated with front water wall down-comer 23, second bypass pipe 22 is provided with second pipe pump 21, the electrical signal front water wall down-comer 23 being positioned at the two ends of the second bypass pipe 22 being provided with the second control valve 20, second control valve 20 is connected with the electric signal input end of second pipe pump 22, the two ends of the 3rd bypass pipe 11 are communicated with the second side water wall down-comer 13,3rd bypass pipe 11 is provided with the 3rd tubing pump 10, the electrical signal the second side water wall down-comer 13 being positioned at the two ends of the 3rd bypass pipe 11 being provided with the 3rd control valve the 12, three control valve 12 is connected with the electric signal input end of the 3rd tubing pump 10, the two ends of the 4th bypass pipe 5 are communicated with rear water wall down-comer 8,4th bypass pipe 5 is provided with the 4th tubing pump 7, the electrical signal rear water wall down-comer 8 being positioned at the two ends of the 4th bypass pipe 5 being provided with the 4th control valve the 9, four control valve 9 is connected with the electric signal input end of the 4th tubing pump 7.
First control valve of present embodiment, the second control valve, the 3rd control valve and the 4th control valve all preferentially select two position control valve.First control valve of present embodiment, the second control valve, the 3rd control valve and the 4th control valve select electric butterfly valve.Electrodynamic pump selected by first tubing pump of present embodiment, second pipe pump, the 3rd tubing pump and the 4th tubing pump.
Detailed description of the invention two: composition graphs 1 illustrates present embodiment, described in present embodiment, the first control valve 16 is fast opening characteristic control valve.Setting like this, controls for dibit, is convenient to the chain control of control valve and tubing pump.Other is identical with detailed description of the invention one.
Detailed description of the invention three: composition graphs 1 illustrates present embodiment, described in present embodiment, the second control valve 20 is fast opening characteristic control valve.Setting like this, controls for dibit, is convenient to the chain control of control valve and tubing pump.Other is identical with detailed description of the invention one or two.
Detailed description of the invention four: composition graphs 1 illustrates present embodiment, described in present embodiment, the 3rd control valve 12 is fast opening characteristic control valve.Setting like this, controls for dibit, is convenient to the chain control of control valve and tubing pump.Other is identical with detailed description of the invention one or two.
Detailed description of the invention five: composition graphs 1 illustrates present embodiment, described in present embodiment, the 4th control valve 9 is fast opening characteristic control valve.Setting like this, controls for dibit, is convenient to the chain control of control valve and tubing pump.Other is identical with detailed description of the invention one or two.
The course of work
When boiler normally runs, the first tubing pump, second pipe pump, the 3rd tubing pump and the 4th tubing pump are in opening, and the first control valve, the second control valve, the 3rd control valve and the 4th control valve are closed condition, and water-cooling wall water circulation is forced circulation.By designer's requirement, water circulation flow comparatively Natural Circulation can be doubled and redoubled, and in water-cooling wall tedge, water flow velocity is doubled and redoubled, and improves the safety coefficient in boiler running process.Two, run into burst accident or have a power failure suddenly, when first tubing pump, second pipe pump, the 3rd tubing pump and the 4th tubing pump are out of service, first control valve, the second control valve, the 3rd control valve and the 4th control valve are opened respectively automatically, water circulation system changes into natural-circulation operation, the guarantee water in tedge that is heated continues to maintain flowing, makes the unlikely vaporization of boiler.
Thisly set up a kind of forced circulation device in the water-cooling wall natural water circulation system of right circulation boiler naturally, making former hot water boiler with natural circulation become a kind of convection bank is natural water circulation, and water-cooling wall is forced water circulation.Once have a power failure suddenly, boiler recover again former Natural Circulation water bath original running status, it preserves the original advantage of natural circulation boiler, the poor water quality situation that some large-scale heat network system at present cannot overcome for the moment can be adapted to again, the difficult point of Natural Circulation water-cooling wall water system design can be avoided again.Certainly, this new system adds in system runs component, and the suitable automaton set up tubing pump and two position control valve and be chained together mutually, report to the police and monitoring system, require management and maintenance that is stricter and science, guarantee system safety operation.The accessory of present embodiment in use in upper drum is done to adapt to change, to make in water-cooling wall water system forced circulation state or to keep under former Natural Circulation state, and the kilter of unlikely destruction boiler entirety circulation.
Claims (5)
1. a hot-water boiler, described boiler comprises upper drum (14), lower drum (2), first lower header (1), second lower header (28), 3rd lower header (27), 4th lower header (25), convection bank (6), front water wall down-comer (23), first side water wall down-comer (15), second side water wall down-comer (13), rear water wall down-comer (8), first tedge (3), second tedge (4), 3rd tedge (29) and the 4th tedge (24), upper drum (14) is communicated with by convection bank (6) with lower drum (2), the two ends of rear water wall down-comer (8) are communicated with the first lower header (1) with upper drum (14) respectively, the two ends of the first tedge (3) are communicated with the first lower header (1) with upper drum (14) respectively, the two ends of the second tedge (4) are communicated with the first lower header (1) with upper drum (14) respectively, the two ends of the 3rd tedge (29) are communicated with the first lower header (1) with upper drum (14) respectively, the two ends of the 4th tedge (24) are communicated with the 4th lower header (25) with upper drum (14) respectively, the two ends of the second side water wall down-comer (13) are communicated with the second lower header (28) with upper drum (14) respectively, the two ends of the first side water wall down-comer (15) are communicated with upper drum (14) with the 3rd lower header (27) respectively, the two ends of front water wall down-comer (23) are communicated with the 4th lower header (25) with upper drum (14) respectively, it is characterized in that: described boiler also comprises the first bypass pipe (19), second bypass pipe (22), 3rd bypass pipe (11), 4th bypass pipe (5), first tubing pump (17), second pipe pump (21), 3rd tubing pump (10), 4th tubing pump (7), first control valve (16), second control valve (20), 3rd control valve (12) and the 4th control valve (9), the two ends of the first bypass pipe (19) are communicated with the first side water wall down-comer (15), first bypass pipe (19) is provided with the first tubing pump (17), the the first side water wall down-comer (15) being positioned at the two ends of the first bypass pipe (19) is provided with the first control valve (16), the electrical signal of the first control valve (16) is connected with the electric signal input end of the first tubing pump (17), the two ends of the second bypass pipe (22) are communicated with front water wall down-comer (23), second bypass pipe (22) is provided with second pipe pump (21), the front water wall down-comer (23) being positioned at the two ends of the second bypass pipe (22) is provided with the second control valve (20), and the electrical signal of the second control valve (20) is connected with the electric signal input end of second pipe pump (22), the two ends of the 3rd bypass pipe (11) are communicated with the second side water wall down-comer (13), 3rd bypass pipe (11) is provided with the 3rd tubing pump (10), the the second side water wall down-comer (13) being positioned at the two ends of the 3rd bypass pipe (11) is provided with the 3rd control valve (12), and the electrical signal of the 3rd control valve (12) is connected with the electric signal input end of the 3rd tubing pump (10), the two ends of the 4th bypass pipe (5) are communicated with rear water wall down-comer (8), 4th bypass pipe (5) is provided with the 4th tubing pump (7), the rear water wall down-comer (8) being positioned at the two ends of the 4th bypass pipe (5) is provided with the 4th control valve (9), and the electrical signal of the 4th control valve (9) is connected with the electric signal input end of the 4th tubing pump (7).
2. a kind of hot-water boiler according to claim 1, is characterized in that: described first control valve (16) is fast opening characteristic control valve.
3. a kind of hot-water boiler according to claim 1 and 2, is characterized in that: described second control valve (20) is fast opening characteristic control valve.
4. a kind of hot-water boiler according to claim 1 and 2, is characterized in that: described 3rd control valve (12) is fast opening characteristic control valve.
5. a kind of hot-water boiler according to claim 1 and 2, is characterized in that: described 4th control valve (9) is fast opening characteristic control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310141758.2A CN103175297B (en) | 2013-04-23 | 2013-04-23 | Water heating boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310141758.2A CN103175297B (en) | 2013-04-23 | 2013-04-23 | Water heating boiler |
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| Publication Number | Publication Date |
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| CN103175297A CN103175297A (en) | 2013-06-26 |
| CN103175297B true CN103175297B (en) | 2015-05-20 |
Family
ID=48635338
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310141758.2A Active CN103175297B (en) | 2013-04-23 | 2013-04-23 | Water heating boiler |
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| CN (1) | CN103175297B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893987A (en) * | 2017-12-28 | 2018-04-10 | 西安富凯能源科技有限责任公司 | The hydrodynamic effective utilization system of natural circulation boiler |
| CN109668135B (en) * | 2018-11-16 | 2020-03-06 | 龙正环保股份有限公司 | Water coal slurry combustion steam boiler |
Citations (8)
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|---|---|---|---|---|
| US3020895A (en) * | 1959-10-06 | 1962-02-13 | Babcock & Wilcox Co | High temperture liquid heater |
| CN2286278Y (en) * | 1997-04-29 | 1998-07-15 | 长春市文教锅炉厂 | Single-drum vertical bypass flue rear-inclined reciprocating grate combustion coal boiler |
| CN101206075A (en) * | 2007-11-23 | 2008-06-25 | 袁福林 | Hot flue gas bidirectional firing, high anthrax adaptability and variable load honeycomb type coal boiler |
| CN101210742A (en) * | 2006-12-30 | 2008-07-02 | 顾利平 | By-pass cooling structure for forcible circulation water-heating boiler |
| CN101957059A (en) * | 2009-07-15 | 2011-01-26 | 王森 | Full reverse convection unsealed water tube boiler |
| CN201885588U (en) * | 2010-11-18 | 2011-06-29 | 唐军 | Residual heat steam boiler of tunnel kiln of gangue bricks |
| CN202158650U (en) * | 2011-06-08 | 2012-03-07 | 刘伟义 | Chain type double-drum biomass particle gasification combustion hot water environmental friendly boiler |
| CN203163230U (en) * | 2013-04-23 | 2013-08-28 | 董珊 | Hot water boiler |
-
2013
- 2013-04-23 CN CN201310141758.2A patent/CN103175297B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3020895A (en) * | 1959-10-06 | 1962-02-13 | Babcock & Wilcox Co | High temperture liquid heater |
| CN2286278Y (en) * | 1997-04-29 | 1998-07-15 | 长春市文教锅炉厂 | Single-drum vertical bypass flue rear-inclined reciprocating grate combustion coal boiler |
| CN101210742A (en) * | 2006-12-30 | 2008-07-02 | 顾利平 | By-pass cooling structure for forcible circulation water-heating boiler |
| CN101206075A (en) * | 2007-11-23 | 2008-06-25 | 袁福林 | Hot flue gas bidirectional firing, high anthrax adaptability and variable load honeycomb type coal boiler |
| CN101957059A (en) * | 2009-07-15 | 2011-01-26 | 王森 | Full reverse convection unsealed water tube boiler |
| CN201885588U (en) * | 2010-11-18 | 2011-06-29 | 唐军 | Residual heat steam boiler of tunnel kiln of gangue bricks |
| CN202158650U (en) * | 2011-06-08 | 2012-03-07 | 刘伟义 | Chain type double-drum biomass particle gasification combustion hot water environmental friendly boiler |
| CN203163230U (en) * | 2013-04-23 | 2013-08-28 | 董珊 | Hot water boiler |
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| CN103175297A (en) | 2013-06-26 |
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