CN102353143A - Compound water circulation system in corner tube-type hot-water boiler - Google Patents
Compound water circulation system in corner tube-type hot-water boiler Download PDFInfo
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- CN102353143A CN102353143A CN2011102498268A CN201110249826A CN102353143A CN 102353143 A CN102353143 A CN 102353143A CN 2011102498268 A CN2011102498268 A CN 2011102498268A CN 201110249826 A CN201110249826 A CN 201110249826A CN 102353143 A CN102353143 A CN 102353143A
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Abstract
The invention discloses a compound water circulation system in a corner tube-type hot-water boiler, and overcomes the defect of high power consumption by adopting a forced circulation mode because the low temperature corrosion of a tube on a heating surface is easy to cause in a common hot-water boiler which adopts a natural circulating mode. The compound water circulation system is formed by combining a natural circulation part and a forced circulation part, wherein the natural circulation part consists of a boiler barrel, a descending tube, an ascending tube and a natural circulation upper colleting box; the forced circulation part consists of a lower collecting box, a flag-type heating surface, a forced circulation upper collecting box, and an outlet water collecting box; and simultaneously, a water partition part provided with a backflow channel is arranged in the boiler barrel. The compound water circulation system has the advantages of compact structure, small volume, low cost, high thermal efficiency, low power consumption and the like, and is widely used in hot-water boiler systems.
Description
Technical field
The present invention relates to the water circulation system in a kind of boiler, particularly relate to the composite water circulatory system in a kind of corner-tube hot-water boiler.
Background technology
General traditional hot-water boiler; What the burner hearth and the convection heating surface overwhelming majority adopted is natural circulation mode; Because boiler integral body is natural circulation mode; The medium temperature low (near return water temperature) in the afterbody convection heating surface then; Because the flue-gas temperature at this place is also lower; So the heating surface wall temperature tends to be lower than the dew-point temperature of flue gas, thereby cause the cold end corrosion of heating surface pipe.Yet also some hot-water boiler has adopted the forced circulation mode; But the boiler cycle efficieny of forced circulation generally will reach about 2～3; Because the quantity of circulating water of hot-water boiler is very big,, wasted a large amount of electric power resources so the power consumption of water circulating pump just increases greatly.
Summary of the invention
The objective of the invention is to provide the composite water circulatory system in a kind of corner-tube hot-water boiler (hereinafter to be referred as the composite water circulatory system); Adopt natural circulation mode to be prone to cause the cold end corrosion of heating surface pipe to solve general hot-water boiler, and adopt the big defective of forced circulation mode power consumption.
The composite water circulatory system of the present invention can adopt following technical scheme to implement: it is partly to adopt Natural Circulation at burner hearth; And the compound endless form that adopts forced circulation to combine at the afterbody convection heating surface; That is it is a kind of by drum; Water-stop sheet; Return flow line on the water-stop sheet; Down-comer; The Natural Circulation that tedge and Natural Circulation upper collecting chamber constitute partly reaches by the next part case; Flag formula heating surface; The composite water circulatory system that the forced circulation that forced circulation upper collecting chamber and water outlet collection case constitute partly combines; In drum, be provided with simultaneously the water-stop sheet that leaves the return flow line; Backwater and the high-temperature water after the furnace heating surface heating are circulated reliably, make by drum; Down-comer; The tedge and the formed circulatory system of Natural Circulation upper collecting chamber also can guarantee that water circulates by Natural Circulation when operation the time can form the composite water circulatory system that Natural Circulation combines with forced circulation in blowing out safe and reliable.
The mutual installation connecting relation and the prior art in operation principle and the hot-water boiler of remainder are same or similar.
In the corner-tube hot-water boiler that designs and produces according to technique scheme the composite water circulatory system compared with prior art, its main feature is:
1, burner hearth partly adopts Natural Circulation; Adopt forced circulation at the afterbody convection heating surface; And the forced circulation convection heating surface of afterbody has partly adopted counter-flow arrangement; Improved the heat exchange effect; Reduced the heating surface layout; Make boiler structure compact, dwindled the volume of boiler, practiced thrift manufacturing and installation cost;
2, because the water of entering convection heating surface is the high-temperature water after the burner hearth heating of drawing from drum, it can improve the wall temperature of back-end surfaces, thereby has avoided the generation of cold end corrosion;
3, forced circulation has partly adopted flag formula heating surface, and a large amount of convection heating surface pipes fin panel casing pipe in flue is drawn.Therefore steel have not only been practiced thrift in the application of flag formula heating surface, have improved technology, have reduced cost, also help the operational efficiency that improves boiler.
Below in conjunction with accompanying drawing the present invention is done further narration.
Description of drawings
Composite water circulatory system structural representation in Fig. 1, the corner-tube hot-water boiler.
Water-stop sheet structural representation in Fig. 2, the drum.
The water-stop sheet structure is launched sketch map in Fig. 3, the drum.
The specific embodiment
The composite water circulatory system such as Fig. 1, Fig. 2, shown in Figure 3 in the corner-tube hot-water boiler of the present invention: it is by comprising that Natural Circulation that return flow line 15 on drum 2, water-stop sheet 14, the water-stop sheet, preceding down-comer 3, back down-comer 9, tedge 4 and Natural Circulation upper collecting chamber 13 constitute partly reaches the composite water circulatory system that the forced circulation that is made up of next part case 6, flag formula heating surface 8, forced circulation upper collecting chamber 11 and water outlet collection case 12 partly combines.Simultaneously in drum, be provided with the water-stop sheet 14 that leaves return flow line 15, make that also to guarantee that water circulates by Natural Circulation in the time of forming the composite water circulatory system that Natural Circulation combines with forced circulation in blowing out when the operation by drum 2, down-comer 3 and down-comer 9, tedge 4 and Natural Circulation upper collecting chamber 13 formed natural cycle systems safe and reliable.
The composite water circulatory system that designs and produces according to technique scheme: the backwater of heat network system gets into drum 2 through separator tube through water inlet collection case 1; Water-stop sheet 14 (like Fig. 2, shown in Figure 3) is set in the drum makes backwater concentrate preceding down-comer 3 of inflow and back down-comer 9; Down-comer inserts respectively organizes fin panel casing next part case 5 except that flag formula heating surface 8, get back in the drum through each group fin panel casing tedge 4 and Natural Circulation upper collecting chamber 13 again.After the burner hearth heating, get back to the hot water of drum; Evenly introduce the passage rear wall water-cooling wall next part case 6 that has flag formula heating surface through fairlead 7 again; Through many group flag formula heating surfaces 8, be pooled to forced circulation upper collecting chamber 11 after the heating, send into heat supply network after evenly introducing water outlet collection case 12.
Claims (2)
1. the composite water circulatory system in the corner-tube hot-water boiler is characterized in that this composite water circulatory system is partly to reach the composite water circulatory system that the forced circulation by next part case (6), flag formula heating surface (8), forced circulation upper collecting chamber (11) and water outlet collection case (12) formation partly combines by the Natural Circulation that the return flow line (15), preceding down-comer (3), back down-comer (9), tedge (4) and the Natural Circulation upper collecting chamber (13) that comprise on drum (2), water-stop sheet (14), the water-stop sheet constitute.
2. the composite water circulatory system in the corner-tube hot-water boiler according to claim 1; It is characterized in that in drum, being provided with the water-stop sheet (14) that leaves return flow line (15), it is safe and reliable to make natural cycle system when operation the time can form the composite water circulatory system that Natural Circulation combines with forced circulation in blowing out, also can guarantee that water circulates by Natural Circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102498268A CN102353143A (en) | 2011-08-29 | 2011-08-29 | Compound water circulation system in corner tube-type hot-water boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102498268A CN102353143A (en) | 2011-08-29 | 2011-08-29 | Compound water circulation system in corner tube-type hot-water boiler |
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| Publication Number | Publication Date |
|---|---|
| CN102353143A true CN102353143A (en) | 2012-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102498268A Pending CN102353143A (en) | 2011-08-29 | 2011-08-29 | Compound water circulation system in corner tube-type hot-water boiler |
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| CN (1) | CN102353143A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019552A (en) * | 2014-05-30 | 2014-09-03 | 西安交通大学 | Water circulation structure of fuel gas corner tube hot-water boiler |
| CN106940088A (en) * | 2017-03-28 | 2017-07-11 | 天津辰创环境工程科技有限责任公司 | A kind of squirrel-cage heating furnace |
| WO2021258646A1 (en) * | 2020-06-23 | 2021-12-30 | 江苏太湖锅炉股份有限公司 | Natural circulation ferrosilicon waste heat boiler circulation system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1900620A (en) * | 2006-07-10 | 2007-01-24 | 西安交通大学 | Composite equal flow speed design method of angle tube type boiler flag type convection heat receiving surface |
| CN201050871Y (en) * | 2007-05-10 | 2008-04-23 | 黑龙江双锅锅炉股份有限公司 | Power cut-off protection forced circulation hot water industrial boiler |
| CN201396743Y (en) * | 2009-03-27 | 2010-02-03 | ***联勤部工程安装大队 | Angle pipe type circulating fluidized bed boiler |
| CN201496936U (en) * | 2009-08-26 | 2010-06-02 | 青岛青义锅炉有限公司 | Angle pipe boiler |
| CN201828013U (en) * | 2010-09-30 | 2011-05-11 | 营口绿源锅炉有限责任公司 | Large-sized water-tube hot water boiler in corner-tube type membrane water-cooled wall structure |
| CN202229411U (en) * | 2011-08-29 | 2012-05-23 | 上海新业锅炉高科技有限公司 | Combined water circulation device for corner tube hot water boiler |
-
2011
- 2011-08-29 CN CN2011102498268A patent/CN102353143A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1900620A (en) * | 2006-07-10 | 2007-01-24 | 西安交通大学 | Composite equal flow speed design method of angle tube type boiler flag type convection heat receiving surface |
| CN201050871Y (en) * | 2007-05-10 | 2008-04-23 | 黑龙江双锅锅炉股份有限公司 | Power cut-off protection forced circulation hot water industrial boiler |
| CN201396743Y (en) * | 2009-03-27 | 2010-02-03 | ***联勤部工程安装大队 | Angle pipe type circulating fluidized bed boiler |
| CN201496936U (en) * | 2009-08-26 | 2010-06-02 | 青岛青义锅炉有限公司 | Angle pipe boiler |
| CN201828013U (en) * | 2010-09-30 | 2011-05-11 | 营口绿源锅炉有限责任公司 | Large-sized water-tube hot water boiler in corner-tube type membrane water-cooled wall structure |
| CN202229411U (en) * | 2011-08-29 | 2012-05-23 | 上海新业锅炉高科技有限公司 | Combined water circulation device for corner tube hot water boiler |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019552A (en) * | 2014-05-30 | 2014-09-03 | 西安交通大学 | Water circulation structure of fuel gas corner tube hot-water boiler |
| CN104019552B (en) * | 2014-05-30 | 2016-08-24 | 西安交通大学 | A kind of combustion gas angle pipe hot water boiler water circulation structure |
| CN106940088A (en) * | 2017-03-28 | 2017-07-11 | 天津辰创环境工程科技有限责任公司 | A kind of squirrel-cage heating furnace |
| WO2021258646A1 (en) * | 2020-06-23 | 2021-12-30 | 江苏太湖锅炉股份有限公司 | Natural circulation ferrosilicon waste heat boiler circulation system |
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Application publication date: 20120215 |