CN201496936U - Angle pipe boiler - Google Patents
Angle pipe boiler Download PDFInfo
- Publication number
- CN201496936U CN201496936U CN2009202255847U CN200920225584U CN201496936U CN 201496936 U CN201496936 U CN 201496936U CN 2009202255847 U CN2009202255847 U CN 2009202255847U CN 200920225584 U CN200920225584 U CN 200920225584U CN 201496936 U CN201496936 U CN 201496936U
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- heat exchanger
- change heat
- pipe
- boiler
- temperature
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Abstract
An angle pipe boiler comprises a boiler tube, a vertical pipe, a hearth, a hearth front wall, a hearth rear wall, a front arc, a rear arc, a flue gas channel and a fire grate device, wherein the rear wall of the flue gas channel is communicated with a composite phase change heat exchanger, smoke penetrates through the gap of a convective pipe bundle of the composite phase change heat exchanger, two ends of the convective pipe bundle are respectively communicated with the input and the outlet of the boiler tube of the composite phase change heat exchanger, and two ends of the condenser heat exchanger in the composite phase change heat exchanger boiler tube are respectively connected with a cold water inlet and the boiler tube. The composite phase change heat exchanger is used for replacing a coal economizer adopted by an existing angle pipe boiler, smoke discharge temperature is kept above the temperature of acid dew point, thereby maximally lowering smoke discharge temperature, and improving the thermal efficiency of a boiler, the temperature controller can accurately control the water inlet volume of a condensation heat exchanger, water pipes on the front arc and the rear arc are directly exposed on a light pipe in the hearth, thereby simplifying construction technology, a cooling water pipe is laid in the fire-proof concrete of an anti-coking box, cooling water lowers the temperature of the fire-proof concrete, and avoiding the coking phenomenon.
Description
Technical field
The utility model belongs to the coal-burning boiler technical field, is the corner tube boiler after a kind of the improvement concretely.
Technical background
Corner tube boiler is a kind of novel structure, New-type boiler with high content of technology, and it has safe and reliable, and boiler startup is fast, and temperature stress is little, saves advantages such as steel.But contain a large amount of sulfurs and ash content in the coal-fired corner tube boiler smoke evacuation, exhaust gas temperature is generally about 250 ℃, existing corner tube boiler is in order to reduce the economizer control temperature difficulty of exhaust gas temperature, the exhaust gas temperature of control is too low, and cold end corrosion takes place easily, and the exhaust gas temperature of control is too high, cause the thermal efficiency to decline to a great extent easily, so exhaust gas temperature can only be controlled at 150-180 ℃ usually, thermal losses is higher, has influenced the thermal efficiency of boiler.In addition, concrete is laid on the water pipe surface on the existing corner tube boiler chimney arch, not only expends refractory material, and difficulty of construction is improved; The anti-clinker box temperature of existing corner tube boiler both sides is higher, and coking phenomenon happens occasionally.
Summary of the invention
The utility model will solve existing corner tube boiler exhaust gas temperature control difficulty, and smoke evacuation temperature after the economizer cooling is still higher, influences the technical problem of boiler thermal output, provides a kind of control exhaust gas temperature lower, and the corner tube boiler of cold end corrosion does not take place.
The utility model takes following technical scheme to solve the problems of the technologies described above: a kind of corner tube boiler, comprise drum 1, down-comer 2, burner hearth, burner hearth antetheca 4 and burner hearth rear wall 10, face arch 16 and rear arch 17, exhaust gases passes, fire grate device 5, the rear wall 8 of exhaust gases passes is communicated with complex phase-change heat exchanger, flue gas passes convection bank 14 gaps of complex phase-change heat exchanger, and convection bank 14 two ends are communicated with the entrance and exit of complex phase-change heat exchanger drum 13 respectively, and condensing heat exchanger 12 two ends in the complex phase-change heat exchanger drum 13 connect cold water inlet and drum 1 respectively.
Convection bank 14 is formed a closed circuit with complex phase-change heat exchanger drum 13, flue gas flows 14 of convection banks, water in the convection bank 14 is heated into steam, steam enters complex phase-change heat exchanger drum 13 from an end of convection bank 14 through complex phase-change heat exchanger drum 13 inlets, carry out heat exchange with condensing heat exchanger 12, steam is delivered to cold WATER AS FLOW MEDIUM in the condensing heat exchanger 12 with the latent heat of vaporization, steam condensate (SC) enters convection bank 14 from complex phase-change heat exchanger drum 13 outlet through the other end of convection bank 14 and heats, so moves in circles.Change the inflow of controlling condensing heat exchanger 12 according to flue-gas temperature, and then exhaust gas temperature is remained on more than the acid dew-point temperature, under the prerequisite that cold end corrosion does not take place, can reduce exhaust gas temperature to greatest extent, improve the thermal efficiency of boiler.
Complex phase-change heat exchanger is communicated with below the rear wall 8 of exhaust gases passes.
Water pipe in the burner hearth on face arch 16 and the rear arch 17 is a light pipe.Refractory concrete is not laid on water pipe surface on face arch 16 and the rear arch 17, is the light pipe that is directly exposed in the burner hearth, has reduced the refractory material consumption, has simplified construction technology, has improved the thermal efficiency.
Lay cooling water pipe 18 in the refractory concrete of anti-clinker box in the burner hearth.Cooling water in the cooling water pipe 18 has reduced the refractory concrete temperature, has avoided coking phenomenon.
The utility model has the advantages that: substitute the economizer that existing corner tube boiler adopts with complex phase-change heat exchanger, change the inflow of control condensing heat exchanger according to flue-gas temperature, and then exhaust gas temperature remained on more than the acid dew-point temperature, under the prerequisite that cold end corrosion does not take place, reduce exhaust gas temperature to greatest extent, improved the thermal efficiency of boiler.Temperature controller can be controlled the inflow of condensing heat exchanger accurately, and then makes smoke evacuation remain on desirable temperature accurately.Water pipe on face arch and the rear arch is the light pipe that is directly exposed in the burner hearth, has reduced the refractory material consumption, has simplified construction technology, has improved the thermal efficiency.Lay cooling water pipe in the refractory concrete of anti-clinker box, cooling water has reduced the refractory concrete temperature, has avoided coking phenomenon.
Description of drawings
Fig. 1 is the schematic diagram of an embodiment of the utility model;
Fig. 2 is the A-A cutaway view Amplified image of Fig. 1.
The specific embodiment
Accompanying drawings.
Corner tube boiler drum 1 is communicated with steam fairlead 6 among the figure, and boiler down-comer 2 is as framework.Left side burner hearth antetheca 4 connects face arch 16 in the burner hearth, and right side burner hearth rear wall 10 connects rear arch 17, and the rear is a boiler side walls 3, and there is fire grate device 5 below, and pot thorax down either side has anti-clinker box.Flag formula convection bank 9 is arranged in the exhaust gases passes of boiler intracavity right side.Rear wall 8 belows of exhaust gases passes are communicated with complex phase-change heat exchanger, and flue gas enters convection bank 14 gaps of complex phase-change heat exchanger from the left side, discharge from the right side and enter chimney.Convection bank 14 is positioned at heat exchanger insulation 15.The two ends of convection bank 14 are communicated with the entrance and exit of the complex phase-change heat exchanger drum 13 of top respectively.Cold water enters condensing heat exchanger 12 in the complex phase-change heat exchanger drum 13 from water inlet 19, and hot water enters drum 1 from delivery port 20.The temperature controller 11 that has indicating meter is arranged between water inlet 19 and the delivery port 20,11 pairs of water temperatures of temperature controller detect, can control the inflow of condensing heat exchanger 12 accurately according to variations in temperature, and then control convection bank 14 wall surface temperatures, make smoke evacuation remain on the above 5-10 of acid dew-point temperature ℃ accurately, under the prerequisite that cold end corrosion does not take place, exhaust gas temperature is eased down to about 120 ℃ to greatest extent, boiler thermal output improves more than 4%, temperature controller 11 is in the control exhaust gas temperature, its indicating meter manifests temperature parameter, and temperature controller 11 has warning function, reports to the police during temperature anomaly.
Water pipe on face arch 16 and the rear arch 17 is a light pipe, and refractory concrete is not laid on the water pipe surface, is directly exposed in the burner hearth, is connected by steel plate between the adjacent water pipe, has reduced the refractory material consumption, has simplified construction technology, has improved the thermal efficiency.
Lay U-shaped cooling water pipe 18 in the refractory concrete of the anti-clinker box of burner hearth, the cooling water in the cooling water pipe 18 reduces the refractory concrete temperature, has avoided coking phenomenon, referring to Fig. 2.One end of U-shaped cooling water pipe 18 connects cold water inlet, and the other end is communicated with drum 1.Cooling water pipe 18 can be a circulating water pipe also, and hot water in the circulating water pipe is through heat exchange, returns the anti-clinker box heat absorption again after being lowered into cooling water.
Claims (6)
1. corner tube boiler, comprise drum (1), down-comer (2), burner hearth, burner hearth antetheca (4) and burner hearth rear wall (10), face arch (16) and rear arch (17), exhaust gases passes, fire grate device (5), the rear wall (8) that it is characterized in that exhaust gases passes is communicated with complex phase-change heat exchanger, flue gas passes convection bank (14) gap of complex phase-change heat exchanger, and convection bank (14) two ends are communicated with the entrance and exit of complex phase-change heat exchanger drum (13) respectively, and condensing heat exchanger (12) two ends in the complex phase-change heat exchanger drum (13) connect cold water inlet and drum (1) respectively.
2. a kind of corner tube boiler according to claim 1 is characterized in that being equipped with on the complex phase-change heat exchanger temperature controller (11).
3. a kind of corner tube boiler according to claim 1 and 2 is characterized in that complex phase-change heat exchanger is communicated with rear wall (8) below in smoke path.
4. a kind of corner tube boiler according to claim 1 is characterized in that the water pipe on interior face arch (16) of burner hearth and the rear arch (17) is a light pipe.
5. according to claim 1 or 4 described a kind of corner tube boilers, it is characterized in that laying cooling water pipe (18) in the refractory concrete of anti-clinker box in the burner hearth.
6. a kind of corner tube boiler according to claim 5 is characterized in that cooling water pipe (18) is the U-shaped pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202255847U CN201496936U (en) | 2009-08-26 | 2009-08-26 | Angle pipe boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202255847U CN201496936U (en) | 2009-08-26 | 2009-08-26 | Angle pipe boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496936U true CN201496936U (en) | 2010-06-02 |
Family
ID=42440142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202255847U Expired - Fee Related CN201496936U (en) | 2009-08-26 | 2009-08-26 | Angle pipe boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201496936U (en) |
Cited By (4)
| 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 |
| CN103134040A (en) * | 2011-11-25 | 2013-06-05 | 郭强 | Angle tube type boiler coiler convection heating surface structure |
| CN103134039A (en) * | 2011-11-25 | 2013-06-05 | 郭强 | Angle tube type boiler coiler convection heating surface flue gas channel variable cross-section structure |
| CN104374079A (en) * | 2014-11-03 | 2015-02-25 | 郭强 | Boiler with segmented water returning of heating surface adopted and operation method thereof |
-
2009
- 2009-08-26 CN CN2009202255847U patent/CN201496936U/en not_active Expired - Fee Related
Cited By (7)
| 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 |
| CN103134040A (en) * | 2011-11-25 | 2013-06-05 | 郭强 | Angle tube type boiler coiler convection heating surface structure |
| CN103134039A (en) * | 2011-11-25 | 2013-06-05 | 郭强 | Angle tube type boiler coiler convection heating surface flue gas channel variable cross-section structure |
| CN103134040B (en) * | 2011-11-25 | 2015-01-07 | 郭强 | Angle tube type boiler coiler convection heating surface structure |
| CN103134039B (en) * | 2011-11-25 | 2015-01-21 | 郭强 | Angle tube type boiler coiler convection heating surface flue gas channel variable cross-section structure |
| CN104374079A (en) * | 2014-11-03 | 2015-02-25 | 郭强 | Boiler with segmented water returning of heating surface adopted and operation method thereof |
| CN104374079B (en) * | 2014-11-03 | 2017-02-15 | 郭强 | Operation method for boiler with segmented water returning of heating surface adopted |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20120826 |