CN103363658A - Large double-barrel vertical gas boiler - Google Patents
Large double-barrel vertical gas boiler Download PDFInfo
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- CN103363658A CN103363658A CN2013103058226A CN201310305822A CN103363658A CN 103363658 A CN103363658 A CN 103363658A CN 2013103058226 A CN2013103058226 A CN 2013103058226A CN 201310305822 A CN201310305822 A CN 201310305822A CN 103363658 A CN103363658 A CN 103363658A
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Abstract
The invention relates to a large double-barrel vertical gas boiler. A hearth in a furnace body is arranged on the right side of the boiler; an upper barrel and a lower barrel in the furnace body are arranged on the left side of the boiler; two ultralow nitrogen oxide burners are mounted at the front end of the furnace body vertically respectively; two low-temperature fume condensation-type heat exchangers are mounted in parallel in a heat exchanger box body, the water inlet end and the water inlet pipe of each low-temperature fume condensation-type heat exchanger are communicated with each other, and the water outlet end is communicated with a water inlet box fixedly mounted at the upper end of the furnace body; the water inlet box is communicated with an upper barrel in the furnace body on the other side; the upper barrel is communicated with the lower barrel through a first convection pipe column and a second convection pipe column, as well as an upper box and a lower box of a film-type water cooling wall pipe in the furnace body; hot water is finally elicited from the water outlet box fixedly mounted on the boil. The large double-barrel vertical gas boiler has a large hearth, high combustion efficiency and many heating surfaces, protects the environment, and saves energy.
Description
Technical field
The invention belongs to field of boilers, relate to gas fired-boiler, especially a kind of large-scale pair of drum longitudinal gas-fired water heating boiler.
Technical background
Along with improving constantly of domestic living standard, society is strict gradually to the environmental requirement around the zone of living, the coal burning water heating heating boiler was generally adopted in large-scale merchant's house, civilian house residential quarter in the past, exist more serious dust, poison gas to pollute to peripheral living area, the city is usually shrouded among the fog flue dust.For improving the city people's living standard, the city begins to advocate Blue Sky Project, uses on a large scale the coal-burning boiler of large-scale gas-fired water heating boiler replacement high pollution, extending capacity reformation on existing burning coal boiler room basis.And domestic large-scale gas-fired water heating boiler field also is in the starting initial stage, need to constantly bring forth new ideas, studies, improve, and uses the technology, the material that upgrade and has reached more energy-conservation, the more requirement of environmental protection.
The city is from lacking natural gas to the great development progress of Now Domestic Urban Pipeline Carrying Natural Gas, from before use the natural gas till now general development in various places that heats to Beijing, the fast domestic boiler for producing enterprise of the universal development of gas fired-boiler is unexpected.The large-scale gas-fired water heating boiler in Pekinese also mainly adopts external product, the experience that large-scale gas fired-boiler is produced in the rare design of domestic boiler enterprise, certainly will bring that construction cost is too high, the external problem such as can not in time supply and indiscriminately imitate Beijing model, therefore, coal changes the gas engineering and offers well rare development opportunity once of domestic industry boiler enterprise.
Domestic large-scale gas and hot water heating boiler is to begin in recent years to use, and is in all that design is groped, operating experience is summed up the stage, lacks relevant design experiences, what reaches for high in boiler efficiency, and NOx is low in the flue gas also exists arguement on how many reasonable problems; The general efficient of large-scale gas-fired water heating boiler about 70MW is at 95-96% in the industry, and NOx is at 120-150mg/Nm in the flue gas
3, this data thermal efficiency aspect is lower than world level, and the NOx value reaches foreign level substantially.And main environmental protection index NOx also mainly obtains by supporting external advanced person's ultralow nitrogen burner, domestic also not more application of combustion technology in this respect.Therefore, reach the main direction of studying that higher breakthrough becomes large-scale gas and hot water heating boiler at aspects such as the thermal efficiency, flue gas NOx index, exhaust gas temperatures.
By retrieval, not yet find the publication document identical or close with the present patent application.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, provide that a kind of burner hearth is large, efficiency of combustion is high, heating surface is many, large-scale pair of drum longitudinal gas-fired water heating boiler of environmental protection and energy saving.
The present invention realizes that the technical scheme of purpose is:
A kind of large-scale pair of drum longitudinal gas-fired water heating boiler, comprise body of heater, burner, upper drum, lower drum, the water inlet header, the water outlet header, burner hearth, the first convection bank, the second convection bank, the top rail header, the bottom rail header, low-temperature flue gas condensing heat exchanger and cigarette air channel, a side forms burner hearth in body of heater, opposite side in the body of heater is fixedly mounted with, the lower upper drum that vertically arranges, lower drum and first, the second convection bank, body of heater front end at corresponding burner hearth is equipped with burner, body of heater rear end at upper drum and lower drum is provided with the cigarette air channel, this cigarette air channel is communicated with installation with box heat exchanger, the low-temperature flue gas condensing heat exchanger is installed in box heat exchanger, inspection door and peephole are installed on the body of heater, thermometer hole, pressure tap, it is characterized in that: the burner hearth in the body of heater is arranged in the boiler right side, upper drum in the body of heater and lower drum are arranged in the boiler left side, on the body of heater front end, under be separately installed with two ultralow NOx burners, two low-temperature flue gas condensing heat exchangers are installed in box heat exchanger side by side, the water inlet end of this low-temperature flue gas condensing heat exchanger is communicated with water inlet pipe, the water side is communicated with the water inlet header that the body of heater upper end is fixedly mounted with, this water inlet header is communicated with the upper drum of opposite side in the burner hearth of the furnace body, upper drum is by first, the top rail header of monowall tube in the tube bank of two convection types and the body of heater, the bottom rail header is communicated with lower drum, and final hot water is drawn from the water outlet header that is packed on the upper drum.
And, water-cooling wall in the body of heater is made of fin panel casing and the front-back wall fin panel casing of parallel drum, fin panel casing is by the convection current fin panel casing, gantry periosteum formula water-cooling wall and the left side partition wall fin panel casing of fin panel casing and formation furnace wall cooling form in the convection current, the convection current fin panel casing, fin panel casing in a row is welded to connect upper drum and lower drum in the convection current, fin panel casing is equipped with the first convection bank and the second convection bank therebetween, the structure along tubulation row is all adopted in these two convection banks, the stage casing is connected with band steel between the longitudinal pipe of tube bank, every comb is connected in one, and the membrane wall extreme lower position is provided with hot well and delivery pipe in the tube bank both sides.
And the front-back wall fin panel casing then is comprised of with front wall membrane type membrane wall pipe, rear wall membrane type membrane wall pipe upper drum, the front latter linked top rail header of lower drum, bottom rail header; Perforate on the fin panel casing all is that the outer space bent pipe structure, the sealing at membrane wall perforate position of drawing of employing then is to adopt the hood-shaped formula of welded seal.
And the thick-walled pipe of φ 60 * 4 is all adopted in described membrane wall pipe and convection bank, and the fin between the wall pipe of fin panel casing adopts the band steel that 30mm is wide, 6mm is thick, two-sided and tube welding.
And, described low-temperature flue gas condensing heat exchanger is the middle direct connection mode block structure of finned tube by suitable row of upper and lower header, and pipe is the ND steel pipe of the acid corrosion-resistant of φ 38 * 3, and outer high-frequency welding is twined 08AL Bi-metal Steel Aluminum fin 16, pipe row transverse pitch 80mm, longitudinal pitch 100mm.
Advantage of the present invention and good effect are:
1, this boiler is according to market improving constantly ultralow nitrogen fume emission requirement, boiler main wants the chamber design of combustion space directly related with ultralow NOx burning, larger combustion space, its flame autgmentability in burner hearth is better, flame temperature is lower, and the NOx generation is directly proportional with flame temperature, and can sharply raise when surpassing 1100 ℃, but increasing burner hearth certainly will exert an influence to boiler appearance and size, high stability, therefore, design chamber structure size must combine with burner, and the General Requirements furnace volume heat release rate is lower than 500kw/m
3, reality finally makes the furnace volume heat release rate of the present patent application only have 447kw/m by rational design
3
2, this boiler is according to the approximate rectangular characteristics of section of burner hearth, for guaranteeing the heat radiation uniformity of each heating surface of burner hearth, the high-leveled and difficult technology of double burner has been adopted in design, takes full advantage of every one-inch space of burner hearth, flame degree of filling in burner hearth is best, guarantees that ultralow NOx burning reaches optimum state; Simultaneously, under burner cooperates, by integrating the burner automatic control technology, realize that successfully double burner two machines burn and the unit single fire altogether, the mutual flame interference problem of two machines that solved is further widened the machine utilization adjustable range.
3, this boiler is the resonance problem that prevents that the certainly shake of single big-length convection tube in the high speed sweep of gases from causing, selected on the one hand the thick-walled pipe of larger diameter φ 60 * 4, two aspects reduce flue gas flow rate between pipe greatly, reduce the high speed flue gas to the impact endurance test shock of pipe, three aspects: will be connected with band steel in the middle of the single pipe, form whole arrangement pipe, improve the rigidity of pipe.
4, this boiler is for guaranteeing normal heat exchange, and the reduction that overcomes flue gas flow rate brings the problem of the coefficient of heat transfer reduction of pipe, has increased heat exchanger tube and has arranged quantity, has strengthened the supporting role to upper drum; Simultaneously, have more nearly 30% heating surface in the body of heater, provide assurance for improving boiler operating efficiency.
5, this boiler adopts full film-type water-cooling wall technique, and all outer wall coils, stove internal partition wall pipe are all realized membrane wall, and manufacture difficulty increases but brings the greatly raising of body of heater heat endurance, thermal-insulating sealing; Simultaneously, without the design of fire-resistant furnace wall, not only body of heater weight reduces greatly, and the refractory material that does not use the high pollution highly energy-consuming to produce improves product energy-conserving and environment-protective level indirectly.
6, this boiler control discharging and anti-corrosion material application facet of condensing at condensed water, the outer back-end surfaces of stove is adopted condensed in two stages formula efficient heat exchange fin pipe energy-saving device, heating surface area is up to square meter more than 1800, the design exhaust gas temperature only has 75 ℃, substantially add 5 ℃ for the boiler blow-down water temperature, actual oepration at full load is when 50 ℃ of return water temperatures, and exhaust gas temperature only has 55 ℃, and efficient reaches 98%; For preventing the corrosion of pipe, used first the ND steel pipe aluminum alloy fin material of novel acid corrosion-resistant at heating stove, be more than 4 times of ordinary carbon steel pipe its service life.
Description of drawings
Fig. 1 is contour structures front view of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the top view of Fig. 1;
Fig. 4 is that the C-C of Fig. 3 is to cross-sectional view;
Fig. 5 is that the A-A of Fig. 1 is to cross-sectional view;
Fig. 6 is that the B-B of Fig. 1 is to cross-sectional view.
Specific embodiment
Below in conjunction with accompanying drawing, by specific embodiment the present invention is described in further detail.Need to prove, the present embodiment is descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of large-scale pair of drum longitudinal gas-fired water heating boiler, comprise body of heater 2, ultralow NOx burner (6,7), upper drum 20, lower drum 25, water inlet header 3, water outlet header 1, burner hearth 11, the first convection bank 28, the second convection bank 21, top rail header 12, bottom rail header 18, low-temperature flue gas condensing heat exchanger (14,15) and inspection door 29, cigarette air channel 5, a side forms burner hearth in body of heater, opposite side in the body of heater is fixedly mounted with, lower upper drum and the lower drum that vertically arranges, on the body of heater front end of corresponding burner hearth, under be separately installed with two ultralow NOx burners, body of heater rear end at upper drum and lower drum is provided with the cigarette air channel, and this cigarette air channel is communicated with installation with box heat exchanger 4; Two low-temperature flue gas condensing heat exchangers are installed in box heat exchanger side by side, the water inlet end 9 of this low-temperature flue gas condensing heat exchanger is communicated with water inlet pipe, water side 8 is communicated with the water inlet header that the body of heater upper end is fixedly mounted with, this water inlet header is communicated with the upper drum of opposite side in the burner hearth of the furnace body, upper drum is communicated with lower drum by top rail header, the bottom rail header of monowall tube in first, second convection bank and the body of heater, and final hot water is drawn from the water outlet header that is packed on the upper drum.Inspection door and peephole 23, thermometer hole, pressure tap (all not having label) etc. are installed on the body of heater as required.
In the present embodiment, the burner hearth in the body of heater is arranged in the boiler right side, concrete size of burner hearth: furnace width 3815mm, average height 5165mm, degree of depth 9780mm.
In the present embodiment, upper drum, lower drum and first, second two the backhaul convection banks in the body of heater are arranged in the boiler left side.
In the present patent application, water-cooling wall in the body of heater is made of fin panel casing and the front-back wall fin panel casing of parallel drum, fin panel casing is by fin panel casing 27 in convection current fin panel casing 26, the convection current and consist of gantry periosteum formula water-cooling wall 19 of furnace wall cooling and burner hearth left side partition wall fin panel casing 22 forms, fin panel casing in a row is welded to connect upper drum and lower drum in convection current fin panel casing, the convection current, gantry periosteum formula water-cooling wall all adopts φ 60 * 4 steel pipes, tube pitch 90mm, strengthening between the steel pipe that fin, this fin are arranged is that 6mm is thick; Upper drum does not have the support of major diameter down-comer, the nearly 30 tons of weight of upper drum are all by fin panel casing and the first convection bank therebetween, these two uniform bearing of convection bank of the second convection bank, the structure along tubulation row is all adopted in these two convection banks, the thick-walled pipe of φ 60 * 4, transverse pitch 200mm, longitudinal pitch 90mm; For preventing the vibration of pipe under airflow function, the stage casing is connected with band steel between longitudinal pipe, and every comb is connected in one, and has greatly strengthened the rigidity of pipe; And the horizontal spacing of 200mm is for guaranteeing the wide flue gas corridor of low flue gas flow rate design, though the pipe heat exchange efficiency is decreased, having made things convenient for installation and maintenance repair.In addition, leave respectively space for maintenance after in first and second convection bank district front, and be provided with inspection door, the service work during the more convenient shutdown of boiler.Consider that boiler operatiopn initial stage stove coolant-temperature gage is low, burning load is little, will certainly produce condensed water in body of heater, therefore, the membrane wall extreme lower position is provided with hot well and delivery pipe 24 in the tube bank both sides
Through checking the stress data of every pipe, calculate layout heat exchanger tube quantity in conjunction with heating power, selected the thick-walled pipe of larger diameter φ 60 * 4.
The front-back wall fin panel casing then is comprised of with front wall membrane type membrane wall pipe 10, rear wall membrane type membrane wall pipe 13 upper drum, the front latter linked top rail header of lower drum, bottom rail header; Perforate on the fin panel casing all is to draw the space bent pipe structure outside adopting, and without any intermediate header, the sealing at membrane wall perforate position then is to adopt the hood-shaped formula of welded seal.
For guaranteeing the rigidity of fin panel casing, the outer use of fin panel casing all around up and down twice H shaped steel crossbeam is reinforced, then wall is further reinforced the rear wall fin panel casing of overall width 5467mm by the H section longitudinal beam that connects upper lower header, and water-cooling wall can not produce vibrations when guaranteeing boiler operatiopn.Have burner aperture on gantry periosteum formula water-cooling wall in the burner hearth, check aperture of door, peephole etc., the burner hearth side is provided with four peepholes, with each section flame operation actual state in the convenient observation burner hearth, the burner hearth rear portion also is provided with a peephole, a thermometer hole and a pressure tap, be convenient to install the measure and control instrument to the burner hearth actual operation parameters, burner hearth bottom membrane wall extreme lower position is provided with hot well and delivery pipe.In addition, this boiler does not arrange the burner hearth explosion proof door according to " pot rule " relevant regulations (can be in the air quick-fried greater than 75 boilers of stewing).
Be the resonance problem that prevents that the certainly shake of single big-length standpipe in the high speed sweep of gases from causing, selected on the one hand the thick-walled pipe of larger diameter φ 60 * 4, two aspects reduce flue gas flow rate between pipe greatly, reduce the high speed flue gas to the impact endurance test shock of pipe, three aspects: will be connected with band steel in the middle of the single pipe, form whole arrangement pipe, improve the rigidity of pipe.
The reduction of flue gas flow rate brings the coefficient of heat transfer of pipe to reduce, and for guaranteeing the normal heat exchange of boiler, certainly will will increase convection tube and arrange quantity, and this has strengthened again the supporting role to upper drum.Simultaneously, compare conventional design in the body of heater and have more nearly 30% heating surface, provide assurance for improving boiler operating efficiency.
Except selecting the thick-walled pipe of φ 60 * 4 as the monowall tube for the design angle design, consider to buy simultaneously the simplification of material, manufacturing, all membrane wall pipes and convection tube all adopt the thick-walled pipe of φ 60 * 4, not only improved the intensity of single pipe, simultaneously also improve resistance to corrosion, prolonged the service life of boiler integral body.In addition, fin between the membrane wall pipe adopts the band steel that 30mm is wide, 6mm is thick, and two-sided and tube welding can be strengthened intensity and the heat-resisting ability of membrane wall, reduces thermal stress to the impact of membrane wall.The use of refractory brickwork or concrete partition has been abandoned in the application of membrane wall technology thoroughly, installs easylier, and economy and environmental benefit are better.
The low-temperature flue gas condensing heat exchanger is by the direct connection mode block structure of finned tube along row in the middle of the upper and lower header, pipe is the ND steel pipe of the acid corrosion-resistant of φ 38 * 3, outer high-frequency welding is twined 08AL aluminum alloy fin 16, pipe row transverse pitch 80mm, longitudinal pitch 100mm, be assembled into integral body in every grade of energy-saving appliance factory, on-the-spot directly hoisted in position gets final product, greatly easy mounting process; Simultaneously, for improving the heat exchange efficiency of condenser, adopted the efficient heat exchange fin tubular construction on the one hand, adopted on the other hand condensed in two stages device and flue gas to form the countercurrent flow form, the more effective low temperature backwater that utilizes reduces exhaust gas temperature.In addition, the heating surface total amount of two-stage energy-saving appliance will be more than the heating surface total amount of boiler body up to square meter more than 1800, and the actual motion exhaust gas temperature only has 55 ℃, and substantially for the boiler blow-down water temperature adds 5 ℃, full load efficiency surpasses 98%.The condenser of arranging large heating surface makes whole condensed waters concentrate on that condensation is more rational design in the condenser, concentrates by the drip pipe 17 that arranges to emit again.
The present patent application has adopted high cigarette warm area forced water circulation, the ripe design of low cigarette warm area natural water circulation, be the burner hearth zone of high temperature, hydroecium dividing plate controlled circulation water orderly flow through each heating surface tube of heat pipe by arranging in the upper lower drum in 700 ℃ of above zones of cigarette temperature, make its assurance reach national boiler hydrodynamics calculate standard recommendation safety rise and descending water fast, can guarantee the safe and reliable operation of heat pipe and do not occur overheated.And the low-temperature space heat-exchanging tube bundle of flue-gas temperature below 700 ℃ adopted the natural water circulation mode, being distributed voluntarily by the pipe situation of being heated is to rise and descend, even the pipe experience of this temperature province is told us that current occur and is stagnated in short-term, thereby can not produce gasification yet and form incrustation scale, so, can be confirmed to be very safe.
The present patent application low-temperature flue gas condensing heat exchanger has been used the 09CrCuSb(ND steel of novel acid corrosion-resistant) pipe Bi-metal Steel Aluminum fin material, its acid corrosion-resistant performance is more than 4 times of carbon steel pipe, and also better than SUS304 weak acid resistant performance, price is cheaply more a lot of than 304 stainless steels again, and gas fired-boiler back-end surfaces condensed water only is the weak carbonic acid about PH=6, the best scope used of ND steel just, this will prolong the energy-saving appliance whole service life greatly.
Simultaneously, box heat exchanger and gas flue etc. also adopt the ND steel plate to make with the nonpressure parts that condensed water directly contacts, to improve the energy-saving appliance whole service life.
Be rectangular characteristics according to section of burner hearth, for guaranteeing the heat radiation uniformity of each heating surface of burner hearth, design has been selected and has been arranged up and down two high-leveled and difficult technology of ultralow NOx burner, compare the separate unit burner arrangement, it takes full advantage of every one-inch space of large chamber design, flame degree of filling in burner hearth reaches optimum state, makes ultralow NOx burner can better bring into play ultralow NOx combustibility.Simultaneously, under the supporting merchant's technology of import burner cooperated, by integrating the burner automatic control technology, successful realization double burner two machines burnt and the unit single fire altogether, and two machines that the solved mutual interference problem of flame of making a fire is altogether further widened load range of boiler.
Whole flue gas flow of the present invention: distinguish → the second to (low temperature) flowing bundle district → first order energy-saving appliance → second level energy-saving appliance from burner hearth → the first convection current (high temperature) tube bank
Whole Water flow-path of the present invention: from second level energy-saving appliance → first order energy-saving appliance → water inlet header → [upper drum → low-temperature space convection heating surface pipe → lower drum] natural water circulation → [high-temperature region convection heating surface pipe → furnace tube] forced water circulation → upper drum → water outlet header
The present patent application is finished model machine saving energy test and environmental protection test;
In by the end of December, 2012, finished the environment monitoring to the SZS70MW of Thermal Corp type gas-fired water heating boiler at certain province environment measuring center, and NOx is minimum, and discharging reaches 90-94mg/Nm
3Subsequently, boiler energy-saving inspection center of country has also carried out efficiency test to this stove, actual measurement boiler complete machine operation output load 73.14MW, 63.45 ℃ of exhaust gas temperatures, efficient reaches 98.59%, it is high-efficiency environment friendly energy-conservation, advanced technology that two tests detect digital proof new product 70MW gas-fired water heating boiler, and indices all is better than national standard.Boiler energy-saving inspection center of country provides " report of boiler efficiency test " in January, 2013 with report number " 12EF077-NG01 ", its check conclusion is: " test products thermal efficiency value reaches the thermal efficiency value of TSG0002-2010 " boiler energy-saving technical supervision rule of management " regulation, and exhaust gas temperature, excess air coefficient load " rules " require ".
The user provides the use suggestion;
SZS70MW type gas-fired water heating boiler is finished installation, debugging and trial run in October, 2012 in Thermal Corp.The said firm provides " suggestion feedback of SZS70MW type gas-fired water heating boiler ruuning situation " on March 18th, 2013 to this product, has given abundant affirmation and high evaluation to this product.Its conclusion is as follows: " the SZS70MW type gas-fired water heating boiler that is manufactured and designed by Tianjin Baocheng Machinery Manufacturing Co., Ltd.; stable, safe and reliable, the foot of exerting oneself, exhaust gas temperature is low, efficient is high, the fume emission index reaches the technical protocol requirement ... made major contribution for my company's coal in winter changes gas heating work ".
Claims (5)
1. one kind large-scale pair drum longitudinal gas-fired water heating boiler, comprise body of heater, burner, upper drum, lower drum, the water inlet header, the water outlet header, burner hearth, the first convection bank, the second convection bank, the top rail header, the bottom rail header, low-temperature flue gas condensing heat exchanger and cigarette air channel, a side forms burner hearth in body of heater, opposite side in the body of heater is fixedly mounted with, the lower upper drum that vertically arranges, lower drum and first, the second convection bank, body of heater front end at corresponding burner hearth is equipped with burner, body of heater rear end at upper drum and lower drum is provided with the cigarette air channel, this cigarette air channel is communicated with installation with box heat exchanger, the low-temperature flue gas condensing heat exchanger is installed in box heat exchanger, inspection door and peephole are installed on the body of heater, thermometer hole, pressure tap, it is characterized in that: the burner hearth in the body of heater is arranged in the boiler right side, upper drum in the body of heater and lower drum are arranged in the boiler left side, on the body of heater front end, under be separately installed with two ultralow NOx burners, two low-temperature flue gas condensing heat exchangers are installed in box heat exchanger side by side, the water inlet end of this low-temperature flue gas condensing heat exchanger is communicated with water inlet pipe, the water side is communicated with the water inlet header that the body of heater upper end is fixedly mounted with, this water inlet header is communicated with the upper drum of opposite side in the burner hearth of the furnace body, upper drum is by first, the top rail header of monowall tube in the tube bank of two convection types and the body of heater, the bottom rail header is communicated with lower drum, and final hot water is drawn from the water outlet header that is packed on the upper drum.
2. large-scale pair of drum longitudinal gas-fired water heating boiler according to claim 1, it is characterized in that: the water-cooling wall in the body of heater is made of fin panel casing and the front-back wall fin panel casing of parallel drum, fin panel casing is by the convection current fin panel casing, gantry periosteum formula water-cooling wall and the left side partition wall fin panel casing of fin panel casing and formation furnace wall cooling form in the convection current, the convection current fin panel casing, fin panel casing in a row is welded to connect upper drum and lower drum in the convection current, fin panel casing is equipped with the first convection bank and the second convection bank therebetween, the structure along tubulation row is all adopted in these two convection banks, the stage casing is connected with band steel between the longitudinal pipe of tube bank, every comb is connected in one, and the membrane wall extreme lower position is provided with hot well and delivery pipe in the tube bank both sides.
3. large-scale pair of drum longitudinal gas-fired water heating boiler according to claim 2, it is characterized in that: the front-back wall fin panel casing then is comprised of with front wall membrane type membrane wall pipe, rear wall membrane type membrane wall pipe upper drum, the front latter linked top rail header of lower drum, bottom rail header; Perforate on the fin panel casing all is that the outer space bent pipe structure, the sealing at membrane wall perforate position of drawing of employing then is to adopt the hood-shaped formula of welded seal.
4. according to claim 2 or 3 described large-scale pair of drum longitudinal gas-fired water heating boilers, it is characterized in that: the thick-walled pipe of φ 60 * 4 is all adopted in described membrane wall pipe and convection bank, fin between the wall pipe of fin panel casing adopts the band steel that 30mm is wide, 6mm is thick, two-sided and tube welding.
5. according to claim 2 or 3 described large-scale pair of drum longitudinal gas-fired water heating boilers, it is characterized in that: described low-temperature flue gas condensing heat exchanger is by the direct connection mode block structure of finned tube along row in the middle of the upper and lower header, pipe is the ND steel pipe of the acid corrosion-resistant of φ 38 * 3, outer high-frequency welding is twined 08AL Bi-metal Steel Aluminum fin 16, pipe row transverse pitch 80mm, longitudinal pitch 100mm.
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| CN103925698A (en) * | 2014-04-30 | 2014-07-16 | 哈尔滨红光锅炉总厂有限责任公司 | High-capacity fuel gas condensing hot water boiler adopting compound water circulation |
| CN105299894A (en) * | 2015-11-30 | 2016-02-03 | 天津宝成机械制造股份有限公司 | Gas-fired hot water boiler air circulation energy saving system |
| CN105299726A (en) * | 2015-11-30 | 2016-02-03 | 天津宝成机械制造股份有限公司 | Water way circulation energy saving system of gas-fired hot water boiler |
| CN105352174A (en) * | 2015-11-30 | 2016-02-24 | 天津宝成机械制造股份有限公司 | Large gas-fired hot water boiler |
| CN112066746A (en) * | 2020-09-03 | 2020-12-11 | 苏州市腾中钛设备制造有限公司 | Flue gas condenser and flue gas condenser row |
| CN112268270A (en) * | 2020-09-03 | 2021-01-26 | 浙江双峰锅炉制造有限公司 | Skid-mounted water pipe type low-nitrogen gas steam boiler |
| CN113252844A (en) * | 2021-04-19 | 2021-08-13 | 芜湖美的厨卫电器制造有限公司 | Method for detecting scale formation of heat exchange part of gas water heater and gas water heater |
| CN116731751A (en) * | 2023-06-30 | 2023-09-12 | 清华大学山西清洁能源研究院 | Online monitoring device and online monitoring method for coal gasifier |
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| CN103925698A (en) * | 2014-04-30 | 2014-07-16 | 哈尔滨红光锅炉总厂有限责任公司 | High-capacity fuel gas condensing hot water boiler adopting compound water circulation |
| CN105299894A (en) * | 2015-11-30 | 2016-02-03 | 天津宝成机械制造股份有限公司 | Gas-fired hot water boiler air circulation energy saving system |
| CN105299726A (en) * | 2015-11-30 | 2016-02-03 | 天津宝成机械制造股份有限公司 | Water way circulation energy saving system of gas-fired hot water boiler |
| CN105352174A (en) * | 2015-11-30 | 2016-02-24 | 天津宝成机械制造股份有限公司 | Large gas-fired hot water boiler |
| CN105352174B (en) * | 2015-11-30 | 2018-11-27 | 天津宝成机械制造股份有限公司 | A kind of larger gas hot-water boiler |
| CN105299894B (en) * | 2015-11-30 | 2018-12-04 | 天津宝成机械制造股份有限公司 | A kind of gas-fired water heating boiler air circulation energy conserving system |
| CN112066746A (en) * | 2020-09-03 | 2020-12-11 | 苏州市腾中钛设备制造有限公司 | Flue gas condenser and flue gas condenser row |
| CN112268270A (en) * | 2020-09-03 | 2021-01-26 | 浙江双峰锅炉制造有限公司 | Skid-mounted water pipe type low-nitrogen gas steam boiler |
| CN113252844A (en) * | 2021-04-19 | 2021-08-13 | 芜湖美的厨卫电器制造有限公司 | Method for detecting scale formation of heat exchange part of gas water heater and gas water heater |
| CN113252844B (en) * | 2021-04-19 | 2022-11-04 | 芜湖美的厨卫电器制造有限公司 | Method for detecting scale formation of heat exchange part of gas water heater and gas water heater |
| CN116731751A (en) * | 2023-06-30 | 2023-09-12 | 清华大学山西清洁能源研究院 | Online monitoring device and online monitoring method for coal gasifier |
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Application publication date: 20131023 |