CN103398367B - The large-size horizontal internal combustion fire pipe water heating boiler of external cigarette water-to-water heat exchanger - Google Patents
The large-size horizontal internal combustion fire pipe water heating boiler of external cigarette water-to-water heat exchanger Download PDFInfo
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- CN103398367B CN103398367B CN201310318654.4A CN201310318654A CN103398367B CN 103398367 B CN103398367 B CN 103398367B CN 201310318654 A CN201310318654 A CN 201310318654A CN 103398367 B CN103398367 B CN 103398367B
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Abstract
The present invention relates to a kind of large-size horizontal internal combustion fire pipe water heating boiler of external cigarette water-to-water heat exchanger, comprise drum (1), flue (2) and the second backhaul convection current smoke pipe (4), drum (1) horizontal layout, 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 the second backhaul convection current smoke pipe (4) with flue (2), 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.The present invention can realize the maximization of horizontal internal combustion multitubular boiler, modularization.
Description
Technical field
The present invention relates to a kind of horizontal internal combustion fire pipe water heating boiler.Belong to heating equipment technical field.
Background technology
Horizontal tubular boiler mostly is quick mounting type, has the advantages such as floor space is little, system is simple, easy for installation, in industrial boilers in China, accounts for critical role.But this type of boiler is owing to limiting by the structure in GB/T16508 " shell drum pressure parts Strength co-mputation ", and exerting oneself of this type of boiler is generally no more than 20t/h(14MW).
The advantage that horizontal boiler has water-tube boiler incomparable with the structure of its fast-assembling, easily transport and mounting means.But along with market is to the increase in demand of 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 mean that the pressure-containing parts such as boiler drum, flue wall thickness increases.For the flue contacted with high-temperature flue gas and return combustion chamber, the senior general that crosses of thickness causes thermal stress excessive, jeopardizes boiler operatiopn safety.In GB/T16508 " shell drum pressure parts Strength co-mputation ", 5.2.5 bar specifies " internal diameter Dn that is straight or corrugated flue should not be greater than 1800mm ", " thickness should not be greater than 22mm "; 5.2.5 bar regulation " return combustion chamber drum take thickness should be not more than 35mm ".Which dictates that no matter what material of use of the horizontal internal combustion boiler used in China, flue internal diameter may not exceed 1800mm, thickness may not exceed 22mm, and return combustion chamber thickness may not exceed 35mm.Horizontal internal combustion boiler divides dry back of the body formula and wetting back-type two kinds generally.Dry-back boiler, through running the problem of exposure much for many years, has belonged to the superseded type of furnace.Current domestic common be 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 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 completely, high-temperature flue gas is wherein cooled in time by water, the security of operation of protection return combustion chamber, and tube sheet (end socket) on return combustion chamber also needs perforate weld the second backhaul smoke pipe of sufficient amount heating surface, flue gas is from the second backhaul smoke pipe outlet turnover 180 ° of the 3rd backhaul smoke pipes entered in drum in front smoke box, discharge from the rear smoke box after stove after flue gas releases heat.In sum, boiler capacity is more than 20t/h(14MW) boiler drum diameter very big.If shell diameter is too large, its manufacturing cost can exceed the water pipe of equivalent capability and pressure.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, horizontal tubular boiler maximizes, modular horizontal internal combustion fire pipe water heating boiler to provide one to realize.
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 below flue, 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 on rear side of drum, the shell side of burning chamber is connected with the second backhaul convection current smoke pipe with flue, second backhaul convection current smoke pipe is connected with turning smoke-box, 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 rear water by water pipe membrane wall in a row and carries on the back.
The invention has the beneficial effects as follows:
1, the 3rd backhaul smoke pipe is placed in outside drum, saves drum inner space, reduce drum diameter dimension.
2, cancel return combustion chamber, the turning smoke-box be placed in outside drum is replaced return combustion chamber, and the second backhaul smoke pipe by the restriction of return combustion chamber position, does not make full use of the space in drum, jumbo boiler drum diameter is reduced further.
3, be placed on the rear water back of the body that the burning chamber outside drum is made up of water pipe membrane wall in a row, after effectively preventing boiler, wall temperature is too high.
4, Lu Hou burning chamber just arranges explosion proof door to burner hearth position, is burner hearth pressure release in time when burner hearth generation detonation, protection boiler plant.
As long as 5 burner flame sizes allow, or use flameless combustion technology, can more than 42MW, or drum appearance and size be done less with the boiler capacity of structure of the present invention.
Can to arrange in pairs or groups arbitrarily after the outlet flue of 6, cigarette water-to-water heat exchanger heat exchanger or condenser, exit gas temperature can be dropped to below flue gas condensing temperature, utilize the latent heat of vaporization of steam in flue gas, reduce exhaust gas temperature, be conducive to saving energy and reduce the cost, protection of the environment.
7, the present invention can realize the maximization of horizontal internal combustion multitubular boiler, modularization.
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 the boiler side view adopting dual-furnace-chamber structure.
Reference numeral in figure:
Drum 1
Flue 2
Burning chamber 3
Second backhaul convection current smoke pipe 4
Turning smoke-box 5
Cigarette water-to-water heat exchanger 6
Outlet flue 7.
Detailed description of the invention
See the large-size horizontal internal combustion fire pipe water heating boiler that Fig. 2, Fig. 2 are 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, forms primarily of drum 1, flue 2, burning chamber 3, 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, second backhaul convection current smoke pipe 4 is placed in below flue 2, 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 on rear side of drum 1, the shell side of burning chamber 3 is connected with the second backhaul convection current smoke pipe 4 with flue 2, 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:
Flue 2 is placed in drum 1, burn in flue 2 flue gas that produces of fuel to be transferred the second backhaul convection current smoke pipe 4 entered after 180 ° in drum through burning chamber 3, enter the 3rd backhaul convection current smoke pipe 6 of the cigarette water-to-water heat exchanger be placed in outside drum through turning smoke-box 5, flue gas is discharged from outlet flue 7.
Water flow-path is:
The backwater of forced circulation enters near the shell side outlet flue of external cigarette water-to-water heat exchanger, and water is drawn from entering near mouth of shell side after absorbing the 3rd backhaul flue gas heat, and the structure of counter-flow arrangement is conducive to cigarette water high efficient heat exchanging.Water afterwards introduces the water pipe membrane wall lower header of burning chamber 3, is entered upper collecting chamber, enter drum inner space and heated by flue and the second backhaul smoke pipe liberated heat, make water temperature reach the parameter of setting from the back tube sheet of drum by the liter waterborne heated.
For the accessible EIAJ meeting structural requirement of checking boiler, figure 3 show the boiler adopting 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 can reach 42MW through Strength co-mputation and thermodynamic computing boiler heap(ed) capacity.And the drum internal diameter only large 800-1000mm of three backhaul horizontal tubular boiler more conventional than 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), drum (1) horizontal layout, 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 the second backhaul convection current smoke pipe (4) with flue (2), 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 rear water by water pipe membrane wall in a row and carries on the back.
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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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| 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 CN103398367A (en) | 2013-11-20 |
| CN103398367B true CN103398367B (en) | 2015-11-18 |
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| 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 |
| 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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| 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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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