CN202229411U - Combined water circulation device for corner tube hot water boiler - Google Patents
Combined water circulation device for corner tube hot water boiler Download PDFInfo
- Publication number
- CN202229411U CN202229411U CN2011203173428U CN201120317342U CN202229411U CN 202229411 U CN202229411 U CN 202229411U CN 2011203173428 U CN2011203173428 U CN 2011203173428U CN 201120317342 U CN201120317342 U CN 201120317342U CN 202229411 U CN202229411 U CN 202229411U
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- water
- circulation
- boiler
- natural circulation
- forced circulation
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Abstract
The utility model discloses a combined water circulation device for a corner tube hot water boiler, and aims to overcome the shortcoming that an ordinary hot water boiler easily causes the low-temperature corrosion of tubes on a heating surface when adopting a natural circulation way and causes high power consumption when adopting a forced circulation way. The combined water circulation device combines a natural circulation part and a forced circulation part, wherein the natural circulation part consists of a boiler barrel, downcomers, risers and upper natural circulation headers; the forced circulation part consists of a lower header, flag pattern surfaces, an upper forced circulation header and a water outlet header; and a water-stop sheet with a return passage is arranged in the boiler barrel. The combined water circulation device has the advantages of compact structure, small volume, low cost, high thermal efficiency, low power consumption and the like, and is widely applied to hot water boiler systems.
Description
Technical field
The utility model relates to the water circle device in a kind of boiler, particularly relates to the composite water EGR 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 be natural circulation mode, the interior medium temperature low (near return water temperature) of afterbody convection heating surface then is owing to 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 purpose of the utility model is that composite water EGR in a kind of corner-tube hot-water boiler (hereinafter to be referred as the composite water EGR) will be provided; 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 EGR of the utility model 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 a kind of Natural Circulation that is made up of the return flow line on drum, water-stop sheet, the water-stop sheet, down-comer, tedge and Natural Circulation upper collecting chamber partly reaches the composite water EGR that the forced circulation that is made up of next part case, flag formula heating surface, forced circulation upper collecting chamber and water outlet collection case 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 furnace heating surface heating are circulated reliably, make that also to guarantee that water circulates by Natural Circulation in the time of forming composite water EGR that Natural Circulation combines with forced circulation in blowing out when the operation by drum, down-comer, tedge and the formed circulatory system of Natural Circulation upper collecting chamber 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 EGR 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 partly adopts 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 utility model is done further narration.
Description of drawings
Composite water EGR 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
Composite water EGR such as Fig. 1, Fig. 2, shown in Figure 3 in the corner-tube hot-water boiler of the utility model: 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 composite water EGR 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 EGR 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. composite water EGR in the corner-tube hot-water boiler is characterized in that this composite water EGR is partly to reach the composite water EGR 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. composite water EGR 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 |
|---|---|---|---|
| CN2011203173428U CN202229411U (en) | 2011-08-29 | 2011-08-29 | Combined water circulation device for corner tube hot water boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203173428U CN202229411U (en) | 2011-08-29 | 2011-08-29 | Combined water circulation device for corner tube hot water boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202229411U true CN202229411U (en) | 2012-05-23 |
Family
ID=46079996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203173428U Expired - Fee Related CN202229411U (en) | 2011-08-29 | 2011-08-29 | Combined water circulation device for corner tube hot water boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202229411U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353143A (en) * | 2011-08-29 | 2012-02-15 | 上海新业锅炉高科技有限公司 | Compound water circulation system in corner tube-type hot-water boiler |
-
2011
- 2011-08-29 CN CN2011203173428U patent/CN202229411U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353143A (en) * | 2011-08-29 | 2012-02-15 | 上海新业锅炉高科技有限公司 | Compound water circulation system in corner tube-type hot-water boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20190829 |