CN102588957A - Concurrent boiler utilizing double-tangential circle combustion hearth - Google Patents
Concurrent boiler utilizing double-tangential circle combustion hearth Download PDFInfo
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- CN102588957A CN102588957A CN2012100587134A CN201210058713A CN102588957A CN 102588957 A CN102588957 A CN 102588957A CN 2012100587134 A CN2012100587134 A CN 2012100587134A CN 201210058713 A CN201210058713 A CN 201210058713A CN 102588957 A CN102588957 A CN 102588957A
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- hearth
- direct current
- current cooker
- cooling system
- tangential firing
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Abstract
The invention discloses a concurrent boiler utilizing a double-tangential circle combustion hearth. Two flame tangential circles are formed by at least eight combustors in a hearth of the concurrent boiler, wherein the hearth comprises an upper part hearth, a lower part hearth connected with the upper part hearth, and an ash bucket connected with the lower part hearth; the hearth is internally provided with a water cooling system and the water cooling system comprises the ash bucket and a spiral pipe ring on the lower part hearth, and a vertical pipe ring arranged on the upper part hearth; and the vertical pipe ring is connected with the spiral pipe ring through a middle mixing container. The concurrent boiler utilizing the double-tangential circle combustion hearth, disclosed by the invention, reduces the over-concentrated heat load, and the flame fullness degree in the hearth is the best, so that the heat absorption deviation caused by the water cooling system at different positions is reduced.
Description
Technical field
The present invention relates to a kind of direct current cooker, particularly relate to a kind of direct current cooker that adopts two tangential firing burner hearths.
Background technology
For direct current cooker, belong to the temperature difference between temperature and adjacent pipe for making the boiler can safe and reliable operation through restriction water screen tube interest.In the direct current stove of operation, medium temperature continues to increase, owing to absorb photothermal inequality (by the pipe geometric position; Combustion heat release mode, the fire cleaning degree causes) and mass velocity difference (the whole vertical tube coils of water-cooling wall arrange that the heat absorption deviation of different pipes causes) cause the wall temperature of pipe to raise; The adjacent pipe excessive temperature differentials; Thermal stress strengthens, and as not adding restriction, will cause the pipe drawing crack that thermal stress causes.Solution to this problem does; The water-cooling system of spirally-wound tubes is adopted in the higher zone of thermic load in the burner hearth middle and lower part; Make every pipe walk around at least one week of burner hearth through different thermic load zones; 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 pass through helix tube quantity, regulation by pitch); Have deviation even be heated with flow, high mass velocity still can guarantee the cooling effect of working medium to pipe.
When adopting single tangential firing form in the burner hearth; Thermic load is concentrated the heat absorption deviation that increases water screen tube easily; When changing two tangential firing into, reduce the thermic load of concentrations, thereby make the flame degree of filling in the burner hearth reach the heat absorption deviation that the best diverse location that reduces water screen tube causes.
Summary of the invention
The technical problem that the present invention will solve is to concentrate the heat absorption deviation that increases water screen tube easily for the direct current cooker thermic load that overcomes single tangential firing form of the prior art; The defective that the heat absorption in high heat load district is inhomogeneous, the tube temperature difference is excessive provides a kind of direct current cooker that adopts two tangential firing burner hearths.
The present invention solves above-mentioned technical problem through following technical proposals:
A kind of direct current cooker that adopts two tangential firing burner hearths, its characteristics are, in the burner hearth of this direct current cooker, are formed with the two flame circle of contacts through at least eight burners; Said burner hearth comprises a upper furnace, the ash bucket that the lower furnace and that is connected with this upper furnace is connected with this lower furnace; Also be provided with a water-cooling system in this burner hearth, this water-cooling system comprises the spirally-wound tubes of being located on said ash bucket and the lower furnace, and the vertical tube coil of being located at this upper furnace, and said vertical tube coil is connected with said spirally-wound tubes through a middle mixing header.
Wherein, the rotation direction of the said flame circle of contact in horizontal plane is identical or opposite.
Wherein, said middle mixing header is positioned on the said upper furnace.
Wherein, said middle mixing header is positioned on the said lower furnace.
Wherein, the said two flame circle of contacts are positioned at this lower furnace.
Among the present invention, but above-mentioned optimum condition combination in any on the basis that meets this area general knowledge promptly gets each preferred embodiment of the present invention.
Positive progressive effect of the present invention is: the direct current cooker of the two tangential firing burner hearths of employing of the present invention reduces the thermic load of concentrations, makes that the flame degree of filling in the burner hearth reaches best, thereby reduces the heat absorption deviation that water-cooling system causes at diverse location.
Description of drawings
Fig. 1 is the stereogram of the direct current cooker of the two tangential firing burner hearths of the employing in the present invention's one preferred embodiment.
Fig. 2 is the vertical view that adopts the direct current cooker of two tangential firing burner hearths among Fig. 1.
The specific embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to specify technical scheme of the present invention.
As illustrated in fig. 1 and 2, the direct current cooker of the two tangential firing burner hearths of the employing in the present embodiment is the boiler main fuel with coal, gas or oil or fuel combination.This direct current cooker comprises wall 2 behind a bottom front wall 1, the bottom, and both walls 3, surrounds lower furnace and ash bucket by wall 2 behind said bottom front wall 1, the bottom and two side walls 3.Bottom front wall 1 extends upward and forms top front wall 4, and wall 2 extends upward and forms wall 5 behind the top behind the bottom, by wall 5 behind said top front wall 4, the top and two upper furnace that side wall 3 surrounds.
Behind the bottom of boiler front wall 1 and bottom on the wall 2 and be positioned on the side wall 3 of lower furnace and ash bucket and be provided with spirally-wound tubes 6, at wall 5 behind top front wall 4, the top and be positioned on the side wall 3 of upper furnace and be provided with vertical tube coil 8.Described lower furnace and ash bucket are the membrane walls by spirally-wound tubes and band steel be combined into.Said upper furnace is the membrane wall by vertical tube coil and band steel be combined into.
The spirally-wound tubes 6 that is positioned at the same side is communicated with through a middle mixing header 7 with vertical tube coil 8.In the present embodiment, this centre mixing header 7 is positioned at the intersection of upper furnace and lower furnace.Certainly, those skilled in the art also can with its be arranged in the upper furnace or lower furnace on.Those skilled in the art also can adjust spirally-wound tubes 7 and the concrete distribution of vertical tube coil 8 in burner hearth through the height of mixing header 7 in the middle of changing according to the structure of concrete burner hearth Calculation of Heat Transfer and boiler.Certainly, also superheater or reheater can be set in upper furnace, a determining deviation is close to or kept to superheater and reheater can with the water-cooling wall that vertical tube coil forms.
Be respectively equipped with four burners 9 on the wall 2 behind the bottom front wall 1 of two upper furnace side by side as shown in Figure 2 and the bottom.With quadrangular array four burners 9 form a flame circle of contact in that lower furnace is inner, therefore form two tangential firing patterns in the present embodiment the direct current cooker.
Certainly, those skilled in the art also can adjust the quantity of burner according to actual conditions, with and the position that is provided with.For example can be arranged on the side wall or be arranged on the intersection of side wall and top front wall, perhaps be arranged on the intersection of wall behind side wall and the top.
Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is limited appended claims.Those skilled in the art can make numerous variations or modification to these embodiments under the prerequisite that does not deviate from principle of the present invention and essence, but these changes and modification all fall into protection scope of the present invention.
Claims (5)
1. a direct current cooker that adopts two tangential firing burner hearths is characterized in that, in the burner hearth of this direct current cooker, is formed with the two flame circle of contacts through at least eight burners; Said burner hearth comprises a upper furnace, the ash bucket that the lower furnace and that is connected with this upper furnace is connected with this lower furnace; Also be provided with a water-cooling system in this burner hearth, this water-cooling system comprises the spirally-wound tubes of being located on said ash bucket and the lower furnace, and the vertical tube coil of being located at this upper furnace, and said vertical tube coil is connected with said spirally-wound tubes through a middle mixing header.
2. the direct current cooker of the two tangential firing burner hearths of employing as claimed in claim 1 is characterized in that the rotation direction of said two flame circle of contacts in horizontal plane is identical or opposite.
3. the direct current cooker of the two tangential firing burner hearths of employing as claimed in claim 1 is characterized in that, said middle mixing header is positioned on the said upper furnace.
4. the direct current cooker of the two tangential firing burner hearths of employing as claimed in claim 1 is characterized in that, said middle mixing header is positioned on the said lower furnace.
5. the direct current cooker with two tangential firing burner hearths as claimed in claim 1 is characterized in that, the said two flame circle of contacts are positioned at this lower furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100587134A CN102588957A (en) | 2012-03-07 | 2012-03-07 | Concurrent boiler utilizing double-tangential circle combustion hearth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100587134A CN102588957A (en) | 2012-03-07 | 2012-03-07 | Concurrent boiler utilizing double-tangential circle combustion hearth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102588957A true CN102588957A (en) | 2012-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100587134A Pending CN102588957A (en) | 2012-03-07 | 2012-03-07 | Concurrent boiler utilizing double-tangential circle combustion hearth |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534442A (en) * | 2014-12-28 | 2015-04-22 | 哈尔滨锅炉厂有限责任公司 | Low mass flow speed ultra-supercritical boiler water circulation device and water circulation method |
| CN106016345A (en) * | 2016-05-20 | 2016-10-12 | 哈尔滨工业大学 | Device mounted on supercritical W flame boiler for reducing temperature deviation of water-cooled walls |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672467A (en) * | 2009-09-30 | 2010-03-17 | 哈尔滨锅炉厂有限责任公司 | 350MW supercritical variable pressure operation coal burning boiler |
| CN101793394A (en) * | 2010-03-31 | 2010-08-04 | 哈尔滨工业大学 | Symmetric double-tangential circular single-furnace pulverized coal combustion device |
-
2012
- 2012-03-07 CN CN2012100587134A patent/CN102588957A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672467A (en) * | 2009-09-30 | 2010-03-17 | 哈尔滨锅炉厂有限责任公司 | 350MW supercritical variable pressure operation coal burning boiler |
| CN101793394A (en) * | 2010-03-31 | 2010-08-04 | 哈尔滨工业大学 | Symmetric double-tangential circular single-furnace pulverized coal combustion device |
Non-Patent Citations (2)
| Title |
|---|
| 俞谷颖等: "超(超)临界压力直流锅炉垂直管圈水冷壁特性的研究", 《动力工程》, vol. 29, no. 3, 31 March 2009 (2009-03-31) * |
| 赵桂锋等: "超临界锅炉水冷壁的设计特性", 《电站系统工程》, vol. 23, no. 3, 31 May 2007 (2007-05-31), pages 39 - 40 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534442A (en) * | 2014-12-28 | 2015-04-22 | 哈尔滨锅炉厂有限责任公司 | Low mass flow speed ultra-supercritical boiler water circulation device and water circulation method |
| CN106016345A (en) * | 2016-05-20 | 2016-10-12 | 哈尔滨工业大学 | Device mounted on supercritical W flame boiler for reducing temperature deviation of water-cooled walls |
| CN106016345B (en) * | 2016-05-20 | 2018-03-13 | 哈尔滨工业大学 | A kind of device for reducing water-cooling wall temperature deviation installed in supercritical W-shaped flame boiler |
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Application publication date: 20120718 |