CN202532527U - Boiler including water-cooling system used in variable cross-section furnace chamber - Google Patents
Boiler including water-cooling system used in variable cross-section furnace chamber Download PDFInfo
- Publication number
- CN202532527U CN202532527U CN2012200839446U CN201220083944U CN202532527U CN 202532527 U CN202532527 U CN 202532527U CN 2012200839446 U CN2012200839446 U CN 2012200839446U CN 201220083944 U CN201220083944 U CN 201220083944U CN 202532527 U CN202532527 U CN 202532527U
- Authority
- CN
- China
- Prior art keywords
- cooling system
- water
- tube
- boiler
- variable cross
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Combustion Of Fluid Fuel (AREA)
Abstract
The utility model discloses a boiler including a water-cooling system used in a variable cross-section furnace chamber. The boiler including the water-cooling system used in the variable cross-section furnace chamber comprises a lower-portion furnace chamber and an upper-portion furnace chamber. The lower-portion furnace chamber is divided into a transition area, a lower furnace chamber and an ash hopper from top to bottom. Lower-portion front and back walls, side walls and upper-portion front and back walls are all membrane walls which are formed by combination of pipes and flat steel. The water-cooling system comprises spiral pipes and vertical pipes in one-to-one correspondence with the spiral pipes. All or parts of the membrane walls of the lower-portion furnace chamber are the spiral pipes. The water-cooling system in the boiler is simple in structure, flow quantity of working substances in the pipes is constant, and the problems that due to the fact that the flow quantity in one pipe is distributed to two or more pipes, mass flow rate in the pipes is reduced and then cooling effect of the spiral pipes and the corresponding vertical pipes is influenced are avoided.
Description
Technical field
The utility model relates to a kind of boiler, particularly relates to a kind of boiler that comprises the water-cooling system that is used for the variable cross-section burner hearth.
Background technology
For super critical boiler, can safe and reliable operation for making boiler, need the temperature difference between restriction the highest metal temperature of water-cooling wall pipe and adjacent pipe.In the direct current stove under the supercritical pressure operation, do not have the differentiation of liquid phase and vapour phase, and medium temperature continues to increase.Owing to absorb photothermal inequality (by the pipe geometric position; Combustion heat release mode, the fire cleaning degree causes) with mass velocity difference (the fluid resistance difference of different pipes causes), caused the wall temperature difference of pipe; Excessive temperature differentials; To cause thermal stress to strengthen,, will cause tube leak as not adding restriction.As shown in Figure 1; The solution that is directed against this problem at non-variable cross-section burner hearth does; The higher zone of thermic load adopts helix tube as water-cooling system in the middle and lower part of burner hearth 1; The pipe 2 that makes every inclination is through different thermic load zones, and every pipe all absorbs approximately uniform heat like this, solves the uneven problem of heat absorption with this; On the other hand, under square one, helix tube has than mass velocity in the higher pipe of vertical tube (be generally 2～3 times, can regulate through spiral angle), even be heated and there is deviation in flow, high mass velocity still can guarantee the cooling effect of working medium to pipe.
Yet, for the boiler of variable cross-section burner hearth, because the scrambling of burner hearth shape is difficult to adopt spiral tube structure to guarantee rational performance design and structural design again.The angle of elevation of the pipe of helix tube needs according to irregular burner hearth shape respective change, and this has just caused the difficulty in the processing and manufacturing.
Before the alternation of cross-section; Change helix tube into vertical tube and can avoid the difficulty made; But as shown in Figure 2, if simply with the top of the helical form pipe 21 of helix tube by the skewed vertical configuration that becomes, tube pitch is from increasing greatly; Fin 3 can't effectively be cooled off, and causes water-cooling wall to cross cause thermal damage.If as shown in Figure 3, helical form pipe 22 epimeres of single helix tube are become two vertical tubes 23 (or many, can regulate through spiral angle x) through means such as threeways; Can solve tube pitch from excessive problem; But thing followed problem is, the flow in the single helical form pipe 22 is assigned in two or the many vertical tubes 23, must cause the decline of mass velocity in the pipe of water-cooling system; Influence is to the cooling effect of pipe; This structure only is only feasible in the lower zone of thermic load, and the section of burner hearth change generally occurs in the very high zone of thermic load, burner hearth middle and lower part, thereby this scheme also is infeasible.
The utility model content
The technical problem that the utility model will solve is that the variable cross-section burner hearth can't adopt the defective of helix tube as water-cooling system in the prior art in order to overcome, and a kind of boiler that comprises the water-cooling system that is used for the variable cross-section burner hearth is provided.
The utility model solves above-mentioned technical problem through following technical proposals:
A kind of boiler that comprises the water-cooling system that is used for the variable cross-section burner hearth, it comprises bottom front wall, bottom Hou Qiang, side wall, the lower furnace that is surrounded by wall and said side wall behind said bottom front wall, the bottom; Said bottom front wall extend upward constitute the top front wall, said bottom Hou Qiang extends upward and constitutes top Hou Qiang, the upper furnace that is surrounded by wall and said side wall behind said top front wall, the said top; Said lower furnace is divided into transition region, lower hearth and ash bucket from top to bottom; Wall all is the membrane wall by pipe and band steel be combined into behind said bottom front wall, said bottom Hou Qiang, said side wall, said top front wall and the said top, and its characteristics are: this water-cooling system comprise some helix tubes and corresponding one by one with said helix tube, be communicated with and upwardly extending vertical tube; The membrane wall of said lower furnace is all or part of to be helix tube.Said lower furnace is connected through the upper furnace that transition region and cross section diminish.
Wherein, the boundary of said helix tube and said vertical tube is positioned at the intersection of said transition region and said lower furnace.
Wherein, the boundary of said helix tube and said vertical tube is positioned at the intersection of said lower furnace and said upper furnace.
Wherein, the boundary of said helix tube and said vertical tube is arranged in said upper furnace.
Wherein, said water-cooling system also comprises some tube-carriers, and said tube-carrier and said vertical tube are provided with at interval.
Wherein, be injected with superheated steam, reheated steam or subcooled water in the said tube-carrier.
In the utility model, but above-mentioned optimum condition combination in any on the basis that meets this area general knowledge promptly gets each preferred embodiment of the utility model.
The positive progressive effect of the utility model is: the water-cooling system in the boiler that comprises the water-cooling system that is used for the variable cross-section burner hearth of the utility model is simple in structure; And intraductal working medium flow unchanged; Avoid flow in the original pipe to be assigned in two or the many pipes, the decline of mass velocity influences the cooling effect of helix tube and corresponding vertical tube then in the pipe that causes.Further; Utilize the variation of the angle of adjacent helix tube adjacent channel, that is, the distance in the vertical tube between the adjacent pipe increases after helix tube changes vertical tube into; Therefore increase tube-carrier and make that distance and fin width diminish between these pipes; Heat in the absorption of fluids burner hearth in the tube-carrier, cooling spiral pipe, vertical tube and fin, thus guarantee their safe operation.
Description of drawings
Fig. 1 is the sketch map that adopts the helix tube water-cooling system in the non-variable cross-section burner hearth.
Fig. 2 is the simple structural representation that combines of helix tube and vertical tube.
Fig. 3 is the structural representation that helix tube and vertical tube boundary adopt threeway.
Fig. 4 is a side sectional view of using the boiler of helix tube chilled water system in the utility model one preferred embodiment in the variable cross-section burner hearth.
Fig. 5 is the enlarged drawing of the helix tube chilled water system in the boiler among Fig. 4.
The specific embodiment
Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to specify the technical scheme of the utility model.
Shown in Figure 4 and 5, the boiler that comprises the water-cooling system that is used for the variable cross-section burner hearth of present embodiment comprises wall 102 behind bottom front wall 101, the bottom, side wall 103, the lower furnace 100 that is surrounded by wall behind this bottom front wall 101, this bottom 102 and side wall 103.Said bottom front wall 101 extends upward and constitutes top front wall 201, is extended upward to constitute wall 202 behind the top upper furnace 200 that is surrounded by wall behind top front wall 201, the top 202 and side wall 103 by wall behind the bottom 102.Said lower furnace 100 is divided into transition region 111, lower hearth 112 and ash bucket 113 from top to bottom.Behind said bottom front wall 101, the bottom behind wall 102, side wall 103 and top front wall 201, the top wall 202 all be membrane wall by pipe and band steel be combined into.Inwall at boiler is provided with water-cooling system, this water-cooling system comprise some by some helix tubes 31 and corresponding one by one with helix tube 31, be communicated with and upwardly extending vertical tube 32.The membrane wall of lower furnace 100 all is a helix tube 31.
In the present embodiment, the axis of helix tube 31 and the angle of horizontal plane are 30 °, and the spacing of the axis of adjacent helix tube 31 is 50mm, and the spacing that can be got adjacent vertical tube 32 by trigonometric function is 100mm.Those skilled in the art also can be according to actual needs change the spacing of adjacent vertical tube through the spacing of angle that changes axis and horizontal plane and adjacent helix tube.
In addition, between adjacent vertical tube 32, also be provided with tube-carrier 4.Fluid in the tube-carrier 4 can be superheated steam, reheated steam or subcooled water.Wherein, the high pressure cylinder steam discharge of steam turbine is caused boiler side with pipeline, get into heat exchange in the tube-carrier 4 then, get into the final reheater of boiler at last, all or part of low-temperature reheater that has substituted boiler in the routine techniques scheme of tube-carrier 4 this moment.Press the difference of tube-carrier 4 inner fluids, superheater, reheater or the economizer of boiler in the alternative prior art that tube-carrier 4 can be all or part of.
Though more than described the specific embodiment of the utility model, it will be understood by those of skill in the art that these only illustrate, the protection domain of the utility model is limited appended claims.Those skilled in the art can make numerous variations or modification to these embodiments under the prerequisite of principle that does not deviate from the utility model and essence, but these changes and modification all fall into the protection domain of the utility model.
Claims (6)
1. boiler that comprises the water-cooling system that is used for the variable cross-section burner hearth, it comprises bottom front wall, bottom Hou Qiang, side wall, the lower furnace that is surrounded by wall and said side wall behind said bottom front wall, the bottom; Said bottom front wall extend upward constitute the top front wall, said bottom Hou Qiang extends upward and constitutes top Hou Qiang, the upper furnace that is surrounded by wall and said side wall behind said top front wall, the said top; Said lower furnace is divided into transition region, lower hearth and ash bucket from top to bottom; Wall all is the membrane wall by pipe and band steel be combined into behind said bottom front wall, said bottom Hou Qiang, said side wall, said top front wall and the said top, it is characterized in that: this water-cooling system comprise some helix tubes and corresponding one by one with said helix tube, be communicated with and upwardly extending vertical tube; The membrane wall of said lower furnace is all or part of to be helix tube.
2. the boiler that comprises the water-cooling system that is used for the variable cross-section burner hearth as claimed in claim 1 is characterized in that the boundary of said helix tube and said vertical tube is positioned at the intersection of said transition region and said lower furnace.
3. the boiler that comprises the water-cooling system that is used for the variable cross-section burner hearth as claimed in claim 1 is characterized in that the boundary of said helix tube and said vertical tube is positioned at the intersection of said lower furnace and said upper furnace.
4. the boiler that comprises the water-cooling system that is used for the variable cross-section burner hearth as claimed in claim 1 is characterized in that the boundary of said helix tube and said vertical tube is arranged in said upper furnace.
5. like each described boiler that comprises the water-cooling system that is used for the variable cross-section burner hearth among the claim 1-4, it is characterized in that said water-cooling system also comprises some tube-carriers, said tube-carrier and said vertical tube are provided with at interval.
6. the boiler that comprises the water-cooling system that is used for the variable cross-section burner hearth as claimed in claim 5 is characterized in that, is injected with superheated steam, reheated steam or subcooled water in the said tube-carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200839446U CN202532527U (en) | 2012-03-07 | 2012-03-07 | Boiler including water-cooling system used in variable cross-section furnace chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200839446U CN202532527U (en) | 2012-03-07 | 2012-03-07 | Boiler including water-cooling system used in variable cross-section furnace chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202532527U true CN202532527U (en) | 2012-11-14 |
Family
ID=47133708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200839446U Expired - Fee Related CN202532527U (en) | 2012-03-07 | 2012-03-07 | Boiler including water-cooling system used in variable cross-section furnace chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202532527U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589000A (en) * | 2012-03-07 | 2012-07-18 | 上海锅炉厂有限公司 | Boiler comprising water cooling system for variable-section hearth |
-
2012
- 2012-03-07 CN CN2012200839446U patent/CN202532527U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589000A (en) * | 2012-03-07 | 2012-07-18 | 上海锅炉厂有限公司 | Boiler comprising water cooling system for variable-section hearth |
| CN102589000B (en) * | 2012-03-07 | 2014-04-09 | 上海锅炉厂有限公司 | Boiler comprising water cooling system for variable-section hearth |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2017088742A1 (en) | Water wall of supercritical circulating fluidized bed boiler having high flow stability at low load, and method of realizing low mass flow rate | |
| TWI529350B (en) | Once through evaporator | |
| CN103594127A (en) | Energy-saving nuclear power evaporator | |
| CN103267423A (en) | Heat exchanger in nuclear power plant containment vessel | |
| CN202881214U (en) | Gasification furnace | |
| CN202532527U (en) | Boiler including water-cooling system used in variable cross-section furnace chamber | |
| CN110806017B (en) | Pressure monitoring groove type solar heat collector system | |
| CN204404152U (en) | Low-quality flow ultra-supercritical boiler water EGR | |
| CN104534442A (en) | Low mass flow speed ultra-supercritical boiler water circulation device and water circulation method | |
| CN102132094A (en) | Boiler structure | |
| CN102589000B (en) | Boiler comprising water cooling system for variable-section hearth | |
| CN208604072U (en) | A kind of gasification furnace water-cooling system | |
| US9291344B2 (en) | Forced-flow steam generator | |
| KR101662348B1 (en) | Continuous evaporator | |
| CN204005927U (en) | Supercritical W-shaped flame boiler water-cooling wall inlet flow rate distribution system | |
| CN202255016U (en) | Hexagon heat exchange enhancement needle tube | |
| CN204213887U (en) | Oil smoke composite evaporation device | |
| CN209214415U (en) | Decompression type heat exchanging water pipe is used in a kind of construction of household cogeneration | |
| CN203147730U (en) | Boiler water-cooled wall system | |
| CN102798114B (en) | Method for arranging water-cooled wall of vertical pipe panel of internal thread pipe with non-uniform caliber | |
| CN103438420B (en) | Control the method for overtemperature of W-type flame supercritical once-through boiler water wall tube | |
| CN207365046U (en) | Waste heat boiler reheater tube panel arrangement | |
| CN102980167A (en) | Supercritical pressure coal-fired steam-injection boiler | |
| CN102588957A (en) | Concurrent boiler utilizing double-tangential circle combustion hearth | |
| CN202675247U (en) | Structure for preventing over-temperature of boiler superheater |
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: 20121114 Termination date: 20160307 |