CN103398367A - Large horizontal internally fired fire-tube hot-water boiler with external smoke-water heat exchanger - Google Patents
Large horizontal internally fired fire-tube hot-water boiler with external smoke-water heat exchanger Download PDFInfo
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- CN103398367A CN103398367A CN2013103186544A CN201310318654A CN103398367A CN 103398367 A CN103398367 A CN 103398367A CN 2013103186544 A CN2013103186544 A CN 2013103186544A CN 201310318654 A CN201310318654 A CN 201310318654A CN 103398367 A CN103398367 A CN 103398367A
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Abstract
The invention relates to a large horizontal internally fired fire-tube hot-water boiler with an external smoke-water heat exchanger. The large horizontal internally fired fire-tube hot-water boiler comprises a boiler barrel (1), a boiler furnace (2) and a second return convection smoke tube (4). The boiler barrel (1) is horizontally arranged, and the boiler furnace (2) and the second return convection smoke tube (4) are arranged in the boiler barrel (1). The large horizontal internally fired fire-tube hot-water boiler is characterized in that the second return convection smoke tube (4) is arranged below the boiler furnace (2), a burnout chamber (3), a corner smoke chamber (5) and the smoke-water heat exchanger (6) are arranged on the outside of the boiler barrel (1), heat exchange tubes of the smoke-water heat exchanger are third return convection smoke tubes, the burnout chamber (3) is arranged at the rear of the boiler barrel (1), a shell side of the burnout chamber (3) is communicated with the boiler furnace (2) and the second return convection smoke tube (4), the second return convection smoke tube (4) is communicated with the corner smoke chamber (5), and the corner smoke chamber (5) is communicated with the third return convection smoke tubes of the smoke-water heat exchanger. The large horizontal internally fired fire-tube hot-water boiler has the advantages that the horizontal internally fired fire-tube boiler is large and is modularized.
Description
Technical field
The present invention relates to a kind of horizontal internal combustion fire pipe water heating boiler.Belong to the heating equipment technical field.
Background technology
Horizontal tubular boiler mostly is quick mounting type, and the advantages such as floor space is little, system is simple, easy for installation are arranged, and in industrial boilers in China, accounts for critical role.But this type of boiler is due to the structural limitations that is subjected in GB/T16508 " calculating of shell drum pressure parts intensity ", and exerting oneself of this type of boiler generally is no more than 20t/h(14MW).
Horizontal boiler has the incomparable advantage of water-tube boiler with the structure of its fast-assembling, transportation easily and mounting means.But along with the increase in demand of market to jumbo horizontal boiler, horizontal boiler is to large drum, large flue future development.Boiler belongs to pressure vessel, and drum or flue increase along with diameter and pressure improves, and all means that the pressure-containing parts wall thickness such as boiler drum, flue increase.For the flue that contacts with high-temperature flue gas and return combustion chamber, the senior general that crosses of thickness causes thermal stress excessive, jeopardizes boiler operatiopn safety.5.2.5 bar regulation in GB/T16508 " calculating of shell drum pressure parts intensity " " the inner diameter D n of straight or corrugated flue not should greater than 1800mm ", " thickness not should greater than 22mm "; 5.2.5 bar regulation " return combustion chamber drum take thickness should be not more than 35mm ".This has determined no matter what material of use of the horizontal internal combustion boiler that uses in China, and the flue internal diameter can not surpass 1800mm, thickness can not surpass 22mm, and return combustion chamber thickness can not surpass 35mm.The horizontal internal combustion boiler divides two kinds of dried back of the body formula and wetting back-types generally.Dry-back boiler is a lot of through moving for many years the problem that exposes, and has belonged to the superseded type of furnace.At present domestic common be the wetting back-type horizontal tubular boiler.Accompanying drawing 1 is conventional horizontal triple-pass fire-tube boiler flue gas flow schematic diagram.the flue of boiler is connected the turning smoke-box with the second backhaul smoke pipe and is called return combustion chamber, flue gas after burning enters return combustion chamber from flue, transfer 180 ° and enter the second backhaul smoke pipe, return combustion chamber is immersed in the water in drum fully, high-temperature flue gas wherein is in time cooling by water, the security of operation of protection return combustion chamber, and on the tube sheet on return combustion chamber (end socket), also need perforate to weld the second backhaul smoke pipe of sufficient amount heating surface, flue gas is from the second backhaul smoke pipe outlet 180 ° of the 3rd backhaul smoke pipes that enter in drum of turnover in front smoke box, flue gas is discharged from the rear smoke box after stove after emitting heat.In sum, boiler capacity surpasses 20t/h(14MW) the boiler drum diameter very big.If the shell diameter is too large, its manufacturing cost can surpass the water pipe of equal capacity and pressure.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, provide a kind of and can realize that horizontal tubular boiler maximizes, modular horizontal internal combustion fire pipe water heating boiler.
the object of the present invention is achieved like this: a kind of large-size horizontal internal combustion fire pipe water heating boiler of external cigarette water-to-water heat exchanger, comprise drum, flue and the second backhaul convection current smoke pipe, the horizontal layout of drum, flue and the second backhaul convection current smoke pipe are placed in drum, it is characterized in that: the second backhaul convection current smoke pipe is placed in the flue below, drum is outside equipped with burning chamber, turning smoke-box and cigarette water-to-water heat exchanger, the heat exchanger tube of cigarette water-to-water heat exchanger adopts the 3rd backhaul convection current smoke pipe, burning chamber is placed in the drum rear side, the shell side of burning chamber is connected with flue and the second backhaul convection current smoke pipe, the second backhaul convection current smoke pipe is connected with the turning smoke-box, the turning smoke-box is connected with the 3rd backhaul convection current smoke pipe of cigarette water-to-water heat exchanger.
The large-size horizontal internal combustion fire pipe water heating boiler of the external cigarette water-to-water heat exchanger of the present invention, described burning chamber forms the rear water back of the body by water pipe membrane wall in a row.
The invention has the beneficial effects as follows:
1, the 3rd backhaul smoke pipe is placed in outside drum, saves the drum inner space, reduce the drum diameter dimension.
2, cancel return combustion chamber, the turning smoke-box that is placed in outside drum is replaced to return combustion chamber, the second backhaul smoke pipe is not subjected to the restriction of return combustion chamber position, takes full advantage of the space in drum, and jumbo boiler drum diameter is further reduced.
3, be placed on the outer burning chamber of drum by the rear water back of the body that water pipe membrane wall in a row forms, effectively prevent wall excess Temperature after boiler.
4, after stove, burning chamber arranges explosion proof door over against the burner hearth position, when burner hearth generation detonation, is in time the burner hearth pressure release, the protection boiler plant.
5, as long as the burner flame size allows, or use flameless combustion technology, with the boiler capacity of structure of the present invention, can surpass 42MW, or do drum appearance and size less.
6, after the outlet flue of cigarette water-to-water heat exchanger, can arrange in pairs or groups arbitrarily heat exchanger or condenser, can drop to exit gas temperature below the flue gas condensing temperature, utilizes the latent heat of vaporization of steam in flue gas, reduces exhaust gas temperature, be conducive to save energy and reduce the cost, and protection of the environment.
7, the present invention can realize that the horizontal internal combustion multitubular boiler maximizes, modularization.
The accompanying drawing explanation
Fig. 1 is conventional horizontal triple-pass fire-tube boiler flue gas flow schematic diagram.
Fig. 2 is the large-size horizontal internal combustion fire pipe water heating boiler of the external cigarette water-to-water heat exchanger of the present invention.
Fig. 3 is for adopting the boiler side view of dual-furnace-chamber structure.
Reference numeral in figure:
The second backhaul convection current smoke pipe 4
Turning smoke-box 5
Cigarette water-to-water heat exchanger 6
The specific embodiment
Referring to Fig. 2, Fig. 2 is the large-size horizontal internal combustion fire pipe water heating boiler of the external cigarette water-to-water heat exchanger of the present invention.As seen from Figure 2, the large-size horizontal internal combustion fire pipe water heating boiler of the external cigarette water-to-water heat exchanger of the present invention, mainly be comprised of drum 1, flue 2, burning chamber 3, the second backhaul convection current smoke pipe 4, turning smoke-box 5 and cigarette water-to-water heat exchanger 6.The heat exchanger tube of cigarette water-to-water heat exchanger adopts the 3rd backhaul convection current smoke pipe.The horizontal layout of drum 1, flue 2 and the second backhaul convection current smoke pipe 4 are placed in drum 1, the second backhaul convection current smoke pipe 4 is placed in flue 2 belows, burning chamber 3, turning smoke-box 5 and cigarette water-to-water heat exchanger are placed in outside drum 1, burning chamber 3 is placed in drum 1 rear side, the shell side of burning chamber 3 is connected with flue 2 and the second backhaul convection current smoke pipe 4, and the second backhaul convection current smoke pipe 4 is connected with turning smoke-box 5, and turning smoke-box 5 is connected with the 3rd backhaul convection current smoke pipe of cigarette water-to-water heat exchanger.
Flue gas flow is:
Water flow-path is:
The backwater of forced circulation enters near the shell side outlet flue of external cigarette water-to-water heat exchanger, water absorb after the 3rd backhaul flue gas heat from shell side advance mouth near draw, the structure of counter-flow arrangement is conducive to cigarette water high efficient heat exchanging.Afterwards water is introduced the water pipe membrane wall lower header of burning chamber 3, and heated liter waterborne enters upper collecting chamber, from the back tube sheet of drum, enters the drum inner space and is heated by flue and the second backhaul smoke pipe liberated heat, makes water temperature reach the parameter of setting.
For the accessible EIAJ that meets structural requirement of checking boiler, accompanying drawing 3 shows the boiler that adopts the dual-furnace-chamber structure, the corrugated flue of single maximum inner diameter 1800mm can be used as the burner hearth that 21MW exerts oneself, and through intensity calculating and heating power calculating boiler heap(ed) capacity, can reach 42MW.And the drum internal diameter is only than the large 800-1000mm of the conventional three backhaul horizontal tubular boiler of 14MW.
Claims (2)
1. the large-size horizontal internal combustion fire pipe water heating boiler of an external cigarette water-to-water heat exchanger, comprise drum (1), flue (2) and the second backhaul convection current smoke pipe (4), the horizontal layout of drum (1), flue (2) and the second backhaul convection current smoke pipe (4) are placed in drum (1), it is characterized in that: the second backhaul convection current smoke pipe (4) is placed in flue (2) below, drum (1) is outside equipped with burning chamber (3), turning smoke-box (5) and cigarette water-to-water heat exchanger (6), the heat exchanger tube of cigarette water-to-water heat exchanger adopts the 3rd backhaul convection current smoke pipe, burning chamber (3) is placed in drum (1) rear side, the shell side of burning chamber (3) is connected with flue (2) and the second backhaul convection current smoke pipe (4), the second backhaul convection current smoke pipe (4) is connected with turning smoke-box (5), turning smoke-box (5) is connected with the 3rd backhaul convection current smoke pipe of cigarette water-to-water heat exchanger.
2. the large-size horizontal internal combustion fire pipe water heating boiler of a kind of external cigarette water-to-water heat exchanger according to claim 1 is characterized in that: burning chamber (3) forms the rear water back of the body by water pipe membrane wall in a row.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310318654.4A CN103398367B (en) | 2013-07-26 | 2013-07-26 | The large-size horizontal internal combustion fire pipe water heating boiler of external cigarette water-to-water heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310318654.4A CN103398367B (en) | 2013-07-26 | 2013-07-26 | The large-size horizontal internal combustion fire pipe water heating boiler of external cigarette water-to-water heat exchanger |
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| CN103398367A true CN103398367A (en) | 2013-11-20 |
| CN103398367B CN103398367B (en) | 2015-11-18 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949335A (en) * | 2015-07-03 | 2015-09-30 | 李江民 | Efficient horizontal type condensational fuel industrial boiler |
| CN105004042A (en) * | 2015-08-22 | 2015-10-28 | 郑州大学 | Water tube transversal scouring type oil/gas-fired boiler with three return strokes |
| CN105698149A (en) * | 2016-02-22 | 2016-06-22 | 大震锅炉工业（昆山）有限公司 | Self-adaptive intelligent waste heat boiler |
| CN106338143A (en) * | 2016-10-24 | 2017-01-18 | 徐士伦 | Normal-pressure hot water boiler with retractable fire tube externally arranged |
| CN107178899A (en) * | 2017-07-04 | 2017-09-19 | 大庆市豪迈德科技有限公司 | A kind of high efficiency burnt gas heating furnace |
| CN110779206A (en) * | 2019-11-08 | 2020-02-11 | 哈尔滨锅炉厂有限责任公司 | Subcritical direct-current hot water boiler |
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| JPS61141504U (en) * | 1985-02-18 | 1986-09-01 | ||
| CN101936520A (en) * | 2010-08-16 | 2011-01-05 | 江苏双良锅炉有限公司 | Horizontal type oil-gas condensing steam boiler with energy saver and condenser arranged outside independently |
| CN202521584U (en) * | 2012-04-09 | 2012-11-07 | 无锡太阳山新能源科技有限公司 | Vacuum boiler |
| CN202973535U (en) * | 2012-12-25 | 2013-06-05 | 重庆太湖锅炉股份有限公司 | Horizontal type internal combustion three-return-stroke vacuum boiler |
| CN203478176U (en) * | 2013-07-26 | 2014-03-12 | 江苏双良锅炉有限公司 | Large horizontal type internal combustion fire-tube hot water boiler externally provided with smoke water heat exchanger |
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2013
- 2013-07-26 CN CN201310318654.4A patent/CN103398367B/en active Active
Patent Citations (5)
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| JPS61141504U (en) * | 1985-02-18 | 1986-09-01 | ||
| CN101936520A (en) * | 2010-08-16 | 2011-01-05 | 江苏双良锅炉有限公司 | Horizontal type oil-gas condensing steam boiler with energy saver and condenser arranged outside independently |
| CN202521584U (en) * | 2012-04-09 | 2012-11-07 | 无锡太阳山新能源科技有限公司 | Vacuum boiler |
| CN202973535U (en) * | 2012-12-25 | 2013-06-05 | 重庆太湖锅炉股份有限公司 | Horizontal type internal combustion three-return-stroke vacuum boiler |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949335A (en) * | 2015-07-03 | 2015-09-30 | 李江民 | Efficient horizontal type condensational fuel industrial boiler |
| CN104949335B (en) * | 2015-07-03 | 2019-03-12 | 李江民 | A kind of efficient horizontal condensation gas industry boiler |
| CN105004042A (en) * | 2015-08-22 | 2015-10-28 | 郑州大学 | Water tube transversal scouring type oil/gas-fired boiler with three return strokes |
| CN105698149A (en) * | 2016-02-22 | 2016-06-22 | 大震锅炉工业（昆山）有限公司 | Self-adaptive intelligent waste heat boiler |
| CN106338143A (en) * | 2016-10-24 | 2017-01-18 | 徐士伦 | Normal-pressure hot water boiler with retractable fire tube externally arranged |
| CN106338143B (en) * | 2016-10-24 | 2023-06-20 | 大庆市豪迈德科技有限公司 | External contraction and expansion fire tube type normal pressure hot water boiler |
| CN107178899A (en) * | 2017-07-04 | 2017-09-19 | 大庆市豪迈德科技有限公司 | A kind of high efficiency burnt gas heating furnace |
| CN110779206A (en) * | 2019-11-08 | 2020-02-11 | 哈尔滨锅炉厂有限责任公司 | Subcritical direct-current hot water boiler |
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| CN103398367B (en) | 2015-11-18 |
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