CN103791479A - Novel full tube panel type efficient oil and gas fired boiler - Google Patents

Novel full tube panel type efficient oil and gas fired boiler Download PDF

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Publication number
CN103791479A
CN103791479A CN201410023480.3A CN201410023480A CN103791479A CN 103791479 A CN103791479 A CN 103791479A CN 201410023480 A CN201410023480 A CN 201410023480A CN 103791479 A CN103791479 A CN 103791479A
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China
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tube
panel
fin
casing
convection current
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CN201410023480.3A
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CN103791479B (en
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赵钦新
胡美玲
张国平
王云刚
张毅
李钰鑫
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WUXI ZOZEN BOILERS Co Ltd
Xian Jiaotong University
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WUXI ZOZEN BOILERS Co Ltd
Xian Jiaotong University
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Priority to CN201410023480.3A priority Critical patent/CN103791479B/en
Publication of CN103791479A publication Critical patent/CN103791479A/en
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Abstract

A novel full tube panel type efficient oil and gas fired boiler comprises a radiant heat exchange membrane type water-cooled wall tube panel structure and a convection heat exchange tube bundle type tube panel structure, wherein the radiant heat exchange membrane type water-cooled wall tube panel structure comprises a front wall membrane type water-cooled wall, a rear wall membrane type water-cooled wall, a left side wall membrane type water-cooled wall and a right side wall membrane type water-cooled wall, and an O-shaped section structure is formed by the left side wall membrane type water-cooled wall, the right side wall membrane type water-cooled wall, a side wall lower header and a side wall upper header; the convection heat exchange tube bundle type tube panel structure comprises convection heat exchange tube bundles, a convection tube panel outside wall membrane type wall and a tail smoke chamber, the radiant heat exchange side wall membrane type water-cooled walls serve as inside wall membrane type walls of the convection heat exchange tube bundle type tube panel structure, and a convection flue with two sides being sealed is formed by the radiant heat exchange side wall membrane type water-cooled walls, the outside wall membrane type wall, an upper welding steel board and a lower welding steel board. The novel full tube panel type efficient oil and gas fired boiler is high in safety margin and good in heat transfer performance, makes use of modular design, and is capable of being rapidly installed and integrally assembled, short in installation period, easy and convenient to operate and maintain, and convenient to repair; the overall sealing performance of the whole boiler is good, heat loss due to radiation is reduced obviously, and heat efficiency is improved effectively.

Description

A kind of novel full tube panel formula high efficiency fuel gas fired-boiler
Technical field
The invention belongs to water-tube fuel oil gas fired-boiler technical field, particularly a kind of novel full tube panel formula high efficiency fuel gas fired-boiler.
Background technology
Along with the development of national economy and the raising of living standards of the people, the variation of energy consumption structure has very important status.There are the problems such as energy consumption is high, seriously polluted in existing coal-burning boiler.According to " in the urgent need to Economic Development Mode Conversion and adjustment energy consumption structure; bring up to 11.4% to China's non-fossil energy consumption proportion in 2015; natural gas accounts for primary energy consumption proportion and brings up to 7.5% " in China's energy development " 12 " planning, will there is rapid growth in Future in China natural gas consumption.China or be about to build up the Central Asia, middle Burma, Sino-Russian and many marine LNG supply lines, form the internal growth momentum that increases exploration and development, externally increases the solution source of the gas of working along both lines of introducing, by greatly improving China take coal as main energy supply energy resource structure, improve the Atmospheric Environment Pollution that China constantly worsens.
In use there are the following problems for the conventional oil-burning gas-fired boiler of China: oil-burning gas-fired boiler mostly is medium and small smaller hard flour pancake boiler in the market, smaller hard flour pancake boiler is not suitable for large capacity, can only realize the packaged boiler of capacity below 14MW, can not meet on market in, the demand for development of large-scale oil-burning gas-fired boiler, in future, the developing direction of large-scale oil-burning gas-fired boiler is water-tube boiler, tradition smaller hard flour pancake boiler comprises the labyrinths such as flue, return combustion chamber, smoke pipe and tube sheet, manufacturing process complexity, and labour intensity is large, needs special and various fabricating tools equipment, the high-temperature flue-gas that smaller hard flour pancake boiler sprays from flue is 1000 ℃ of left and right, directly contact smoke pipe and panel weld, cannot eliminate tube-plate fracture accident all the time, in order to solve the tube-plate fracture chronic illness of smaller hard flour pancake boiler, China was once releasing fire tube boiler, to after the cooling of both wings water pipe, enter again the heating surface that smoke pipe is connected with tube sheet from water pipe burner hearth flue gas out, the flue-gas temperature that now enters tube sheet also reaches 800 ℃ of left and right, because cigarette temperature is higher, tube-plate fracture is difficult to eliminate all the time, cause tube sheet and smoke pipe junction cracking to leak or serious explosion accident, margin of safety is low, once and ftracture, normally maintenance process, can only change, meanwhile, smaller hard flour pancake boiler extensively adopts threaded flue and light pipe as convection heating surface, light pipe parallel baffled, heat-transfer effect extreme difference, also just there is the effect of turbulent disturbance strengthening in threaded flue, and tube hub cannot be realized enhanced heat exchange at all within the scope of nearly tube wall face 2mm, in addition, the working medium Side water of shell belongs to large space Natural Circulation, and heat-transfer effect is poorer, and heating surface arrange be subject to great restriction, overhaul more difficult.In addition, in China's traditional design production, large-scale water-tube fuel oil gas fired-boiler is all A substantially, D, the two drums of O type add the boiler structure of convection bank, middle-size and small-size fast-assembling dispatches from the factory, medium-and-large-sized in bulk dispatching from the factory, from manufacturing process, the structure that two drums add convection bank is not suitable for making in site, be only suitable for assembling in factory, because it is very large that two drums add the inside corner connection welding job amount of convection bank structure tube bank end and drum, when upper drum Assembling And Welding, the downward downhand welding of welder, still can guarantee welding quality, but when lower drum Assembling And Welding, welder upwards welds in the overhead position, not only welding quality is difficult to guarantee, and the danger of the metal liquid that in welder's welding process, existence is melted and the burn that splashes, if while manufacture in factory, can be by frocks such as deflection machines, make the also position in downward downhand welding of lower drum, to guarantee welding quality, avoid the danger of welding process simultaneously, and, on-the-spot installation, require independently pipe fitting of each root of welding, installation period is long, the on-the-spot pressure-containing parts of installing, workmanship is difficult to guarantee, being difficult to structurally realize modularization rapid-assembling produces, be difficult to reduce on-the-spot welding job amount greatly, welding quality is difficult to guarantee, these weld bonds become the major safety risks in running, the existence of simultaneously intensive convection bank is also not easy to maintenance, therefore, it is very complicated that two drums add convection bank structure manufacturing process, be not suitable for maximizing.The parameter request visible, the boiler structure of traditional dualization (Small And Medium Capacity smaller hard flour pancake boiler, in the two drum+convection banks of large capacity) can not meet oil-burning gas-fired boiler safe and reliable operation, Fast Installation, overall package and improve gradually; Therefore, be badly in need of changing the structure of current traditional oil-burning gas-fired boiler, expectation can be created a kind of novel oil-burning gas-fired boiler, Small And Medium Capacity and in realize the generalization of oil-burning gas-fired boiler structure within the scope of large capacity full capacity, realize the general boiler body of steam boiler and hot-water boiler, reach safe and reliable to operation, fast-assembling, minimizing Site Welding workload, shorten installation period, overhaul actual requirement easily.
Summary of the invention
For solving the defect and the deficiency that exist in above-mentioned prior art, the object of the present invention is to provide a kind of novel full tube panel formula high efficiency fuel gas fired-boiler, rational in infrastructure, raw materials consumption is few, long-term operation is safe and reliable, energy-efficient, reduce discharging environmental protection, avoid conventional smoke multitubular boiler that tube-plate fracture easily occurs and be difficult to the defects such as maximization; Also avoided traditional A, D, the two drums of O type to add the bottleneck of the complicated the Field Manufacturing Process of the boiler structure of convection bank, secondly, the overall sealing performance of whole boiler is good, and radiation loss significantly reduces, and boiler thermal output effectively improves.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of novel full tube panel formula high efficiency fuel gas fired-boiler, comprise radiation heat transfer fin panel casing tube panel structure 3 and convective heat exchange tube bundles formula tube panel structure 4, described radiation heat transfer fin panel casing tube panel structure 3 comprises front wall fin panel casing 3-1, rear wall fin panel casing 3-2, left side wall fin panel casing 3-3, right-side wall fin panel casing 3-4 and be arranged in the burner 1 on front wall fin panel casing 3-1, described front wall fin panel casing 3-1, rear wall fin panel casing 3-2, left side wall fin panel casing 3-3 and right-side wall fin panel casing 3-4 are at the chamber structure of a sealing of surrounding composition of burner 1,
In the time that boiler adopts flue gas central flame flame structure, pipe row is had loose bowels to form the gas approach of convection heating surface in the front portion of left side wall fin panel casing 3-3 and right-side wall fin panel casing 3-4, be arranged on front wall fin panel casing 3-1 top and the bottom and and its connection be respectively front wall upper collecting chamber 3-6 and front wall lower header 3-5, be arranged on rear wall fin panel casing 3-2 top and the bottom and and its connection be respectively rear wall upper collecting chamber 3-7 and rear wall lower header 3-8, shared side wall upper collecting chamber 3-9 and the side wall lower header 3-10 of four headers and left side wall fin panel casing 3-3 and right-side wall fin panel casing 3-4 is connected, described left side wall fin panel casing 3-3, right-side wall fin panel casing 3-4 and side wall lower header 3-9 and side wall upper collecting chamber 3-10 composition " O " tee section structure, convective heat exchange tube bundles formula tube panel structure 4 comprises left side convection current tube panel tube bank 4-1, right side convection current tube panel tube bank 4-2 and convection current tube panel external wall membrane wall 4-8, convective heat exchange tube bundles formula tube panel structure 4 is docked with welding steel 8 with left side wall fin panel casing 3-3 and right-side wall fin panel casing 3-4, be symmetrically distributed in the both sides of " O " shape structure, left side wall fin panel casing 3-3 and right-side wall fin panel casing 3-4 have served as respectively the inside wall membrane wall of left side convection current tube panel tube bank 4-1 and right side convection current tube panel tube bank 4-2 simultaneously, that be arranged on left side convection current tube panel tube bank 4-1 top and the bottom Bing Heqi UNICOM is left side convection current tube panel upper collecting chamber 4-4 and left side convection current tube panel lower header 4-3, that be arranged on right side convection current tube panel tube bank 4-2 top and the bottom Bing Heqi UNICOM is right side convection current tube panel upper collecting chamber 4-5 and right side convection current tube panel lower header 4-6, described convection current tube panel external wall membrane wall 4-8, left side wall fin panel casing 3-3, right-side wall fin panel casing 3-4 and upper and lower welding steel 8 form both sides sealing convection pass, left side convection current tube panel tube bank 4-1 and right side convection current tube panel tube bank 4-2 are distributed in respectively in the convection pass on both sides,
In the time that boiler adopts smoke three-pass structure, the pipe row at left side wall fin panel casing 3-3 and right-side wall fin panel casing 3-4 rear portion has loose bowels as furnace outlet, in left and right side convection pass, respectively increase by one group of convective heat exchange tube bundles formula tube panel structure 4 with membrane wall the convection pass of both sides is respectively divided into two convection pass, to form smoke three-pass structure.
In the time that described boiler is steam boiler, also comprise and be arranged in the left side wall fin panel casing 3-3 of radiation heat transfer fin panel casing tube panel structure 3 or the drum 2 of right-side wall fin panel casing 3-4 top, described drum 2 is connected by carbonated drink fairlead 7 and each upper collecting chamber.
The part that described convective heat exchange tube bundles formula tube panel structure 4 rear portions extend has formed afterbody smoke-box 4-7 with rear wall fin panel casing 3-2.
Flue gas deep cooler is arranged in described afterbody smoke-box 4-7 inside or back.
Described radiation heat transfer fin panel casing tube panel structure 3 and convection current tube panel external wall membrane wall 4-8 all adopt light pipe and band steel to be welded or adopt the extended surface tube of direct rolling and forming.
Described left side convection current tube panel tube bank 4-1 and right side convection current tube panel tube bank 4-2 all adopt convection current expansion strengthening heating surface, and the tube bank of high-temperature region convection current tube panel adopts arc fin 10 enhanced heat exchanges, and the tube bank of low-temperature space convection current tube panel adopts pin fin structure 11 enhanced heat exchanges.
The mating interface that boiler is divided into radiation heat transfer fin panel casing tube panel structure 3 and 4, two modules of convective heat exchange tube bundles formula tube panel structure along left side wall fin panel casing 3-3 and right-side wall fin panel casing 3-4 can use Plate Welding or use sealing bolt or flange connects.
Add as required or reduce the tube panel number of left side convection current tube panel tube bank 4-1 and right side convection current tube panel tube bank 4-2, can realize from low capacity to large capacity tube panel formula water pipe single structure.
Compared to the prior art, tool has the following advantages in the present invention:
1. compared with traditional Small And Medium Capacity smaller hard flour pancake boiler, the present invention all adopts water pipe pipe panelized construction, manufacturing process is simple, the complicated technology structures such as flue, return combustion chamber, smoke pipe and the tube sheet of smaller hard flour pancake boiler are eliminated, avoid the generation of tube-plate fracture, eliminate the two drums of A, D, O type simultaneously and added the labyrinths such as convection bank, effectively reduced workman's welding job amount, cracking and the leakage accident of having avoided vibration to cause; The danger of single water pipe booster is far below the smaller hard flour pancake boiler of volume class, and safety of structure is far above pan shell type volume class structure of container.
2, compared with water-tube fuel oil gas fired-boiler structure in the past, convective heat exchange tube bundles formula tube panel symmetrical configuration of the present invention is distributed in the both sides of " O " shape structure, replace traditional convection heating surface that is distributed in boiler rear, not only saved the space of boiler room, again convenient installation and maintenance; Structure of the present invention can meet various boiler capacity requirements, all realizes full tube panel single structure from low capacity to large capacity, outside convection current tube panel number flexible modulation according to demand; In, large capacity also can realize that modularization assembling dispatches from the factory, fast-assembling transportation, manufacturing process is simple, has avoided traditional medium-and-large-sized water-tube boiler Site Welding amount large, the problems such as difficult quality guarantee.
3. compared with traditional fuel-firing gas-firing Industrial Boiler, the present invention adopts modular design, is easy to standardization and seriation, is easy to transportation and assembling, is easy to dismounting and safeguards, the time between overhauls(TBO) is short; In, large capacity realizes " O " shape or " D " tee section For Calculating Radiation Heat Transfer In Furnaces fin panel casing modularization and convection bank formula tube panel construction package and dispatches from the factory, modularization assembling docking is realized at outside convection current tube panel scene, avoid the every heavy welding job that independently pipe fitting brings of making in site welding, greatly reduce Site Welding workload, improve welding quality, reduced hidden danger, shortened installation period, significantly improve product quality, guaranteed boiler safe operation more.
Small And Medium Capacity and in realize the generalization of oil-burning gas-fired boiler structure within the scope of large capacity full capacity, meet various boiler capacity requirements, fundamentally break through the bottleneck that the conventional fuel-firing gas-firing of China exists water pipe and fire tube dualization structure all the time, reached safe and reliable to operation, fast-assembling, shortening installation period, overhaul actual requirement easily; When for steam boiler, drum is by carbonated drink fairlead and fin panel casing upper collecting chamber and heat convection tube panel upper collecting chamber UNICOM.
5. burner hearth surrounding water-cooling wall of the present invention and convection current tube panel exterior wall all adopt membrane wall structure, alleviate furnace wall thickness and weight, can be welded into assembly by manufactory and dispatch from the factory, install quick and conveniently, good airproof performance Air Leakage Into Boilers is few, and area of dissipation significantly reduces, radiation loss significantly reduces, and boiler thermal output improves.
6. comparing convection current is in the past subject to face to adopt bundled tube Flag pattern heat surface, convection current tube panel tube bank in the present invention all adopts extended surface enhanced heat exchange, the tube bank of high-temperature region convection current tube panel adopts arc fin enhanced heat exchange, lower temperature district adopts the strengthening of pin wing type to be heated, Needle fin tube is owing to expanding the separation that utilizes fluid when heat transfer area, periodically initial the caused disturbance of Secondary Flow or boundary layer, thereby being constantly damaged, boundary layer increases its heat transfer coefficient, heat exchange efficiency is far above the threaded flue in Flag pattern heat surface and smaller hard flour pancake boiler, make heat conduction reinforced effect remarkable.
7. can realize production domesticization completely and the large-scale production of full tube panel formula water-tube fuel oil gas fired-boiler technology; enhanced heat exchange, compact conformation and energy-efficient complete unification are realized; meet national developing goal; fill up the blank of full capacity Needle fin tube screen formula water-tube fuel oil gas fired-boiler in the world, belong to comprehensive clean energy resource energy-saving and emission-reduction product.
Accompanying drawing explanation
Fig. 1 is the structural representation of novel full tube panel formula fired gas-fired hot water boiler.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the structural representation of novel full tube panel formula fuel-firing gas-firing steam boiler.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the convection current of the present invention tube panel arched ribs sheet reinforced structure schematic diagram that is heated.
Fig. 6 is the convection current of the present invention tube panel pin wing reinforced structure schematic diagram that is heated.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further explained in more detail.
As depicted in figs. 1 and 2, a kind of novel full tube panel formula high efficiency fuel gas fired-boiler of the present invention, comprise radiation heat transfer fin panel casing tube panel structure 3 and convective heat exchange tube bundles formula tube panel structure 4, described radiation heat transfer fin panel casing tube panel structure 3 comprises front wall fin panel casing 3-1, rear wall fin panel casing 3-2, left side wall fin panel casing 3-3, right-side wall fin panel casing 3-4 and be arranged in the burner 1 on front wall fin panel casing 3-1, described front wall fin panel casing 3-1, rear wall fin panel casing 3-2, left side wall fin panel casing 3-3 and right-side wall fin panel casing 3-4 are at the chamber structure of a sealing of surrounding composition of burner 1, in the time that boiler adopts flue gas central flame flame structure, pipe row is had loose bowels to form the gas approach of convection heating surface in the front portion of left side wall fin panel casing 3-3 and right-side wall fin panel casing 3-4, be arranged on front wall fin panel casing 3-1 top and the bottom and and its connection be respectively front wall upper collecting chamber 3-6 and front wall lower header 3-5, be arranged on rear wall fin panel casing 3-2 top and the bottom and and its connection be respectively rear wall upper collecting chamber 3-7 and rear wall lower header 3-8, shared side wall upper collecting chamber 3-9 and the side wall lower header 3-10 of four headers and left side wall fin panel casing 3-3 and right-side wall fin panel casing 3-4 is connected, described left side wall fin panel casing 3-3, right-side wall fin panel casing 3-4 and side wall lower header 3-9 and side wall upper collecting chamber 3-10 composition " O " tee section structure, convective heat exchange tube bundles formula tube panel structure 4 comprises left side convection current tube panel tube bank 4-1, right side convection current tube panel tube bank 4-2 and convection current tube panel external wall membrane wall 4-8, convective heat exchange tube bundles formula tube panel structure 4 is docked with welding steel 8 with left side wall fin panel casing 3-3 and right-side wall fin panel casing 3-4, be symmetrically distributed in the both sides of " O " shape structure, left side wall fin panel casing 3-3 and right-side wall fin panel casing 3-4 have served as respectively the inside wall membrane wall of left side convection current tube panel tube bank 4-1 and right side convection current tube panel tube bank 4-2 simultaneously, that be arranged on left side convection current tube panel tube bank 4-1 top and the bottom Bing Heqi UNICOM is left side convection current tube panel upper collecting chamber 4-4 and left side convection current tube panel lower header 4-3, that be arranged on right side convection current tube panel tube bank 4-2 top and the bottom Bing Heqi UNICOM is right side convection current tube panel upper collecting chamber 4-5 and right side convection current tube panel lower header 4-6, described convection current tube panel external wall membrane wall 4-8, left side wall fin panel casing 3-3, right-side wall fin panel casing 3-4 and upper and lower welding steel 8 form both sides sealing convection pass, left side convection current tube panel tube bank 4-1 and right side convection current tube panel tube bank 4-2 are distributed in respectively in the convection pass on both sides, in the time that boiler adopts smoke three-pass structure, the pipe row at left side wall fin panel casing 3-3 and right-side wall fin panel casing 3-4 rear portion has loose bowels as furnace outlet, in left and right side convection pass, respectively increase by one group of convective heat exchange tube bundles formula tube panel structure 4 with membrane wall the convection pass of both sides is respectively divided into two convection pass, to form smoke three-pass structure.The part that described convective heat exchange tube bundles formula tube panel structure 4 rear portions extend has formed afterbody smoke-box 4-7 with rear wall fin panel casing 3-2.The mating interface that boiler is divided into radiation heat transfer fin panel casing tube panel structure 3 and 4, two modules of convective heat exchange tube bundles formula tube panel structure along left side wall fin panel casing 3-3 and right-side wall fin panel casing 3-4 can use Plate Welding or use sealing bolt or flange connects.
As the preferred embodiment of the present invention, flue gas deep cooler is arranged in described afterbody smoke-box 4-7 inside or back.
As the preferred embodiment of the present invention, described radiation heat transfer fin panel casing tube panel structure 3 and convection current tube panel external wall membrane wall 4-8 all adopt light pipe and band steel to be welded or adopt the extended surface tube of direct rolling and forming, reduce radiation loss, improve the thermal efficiency in stove, fin panel casing convenience quick for installation, reduces whole boiler thickness and weight.
As the preferred embodiment of the present invention, described left side convection current tube panel tube bank 4-1 and right side convection current tube panel tube bank 4-2 all adopt convection current expansion strengthening heating surface, as shown in Figure 5, the tube bank of high-temperature region convection current tube panel adopts arc fin 10 enhanced heat exchanges, as shown in Figure 6, the tube bank of low-temperature space convection current tube panel adopts pin fin structure 11 enhanced heat exchanges, and heat exchange efficiency effectively improves.
As the preferred embodiment of the present invention, add as required or reduce the tube panel number of left side convection current tube panel tube bank 4-1 and right side convection current tube panel tube bank 4-2, can realize from low capacity to large capacity tube panel formula water pipe single structure.
As shown in Figure 3 and Figure 4, in the time that described boiler is steam boiler, also comprise and be arranged in the left side wall fin panel casing 3-3 of radiation heat transfer fin panel casing tube panel structure 3 or the drum 2 of right-side wall fin panel casing 3-4 top, described drum 2 is connected by carbonated drink fairlead 7 and each upper collecting chamber.
The operation principle of flue gas flow of the present invention is: in the time that boiler adopts flue gas central flame flame structure, the high-temperature flue gas and the burner hearth surrounding fin panel casing that are positioned at the burner 1 burning generation on front wall fin panel casing 3-1 carry out radiation heat transfer, burner hearth surrounding fin panel casing comprises front wall fin panel casing 3-1, rear wall fin panel casing 3-2, left side wall fin panel casing 3-3, right-side wall fin panel casing 3-4, after high-temperature flue gas is strile-backd by burner hearth surrounding, the exhanst gas outlet of having loose bowels from the anterior pipe row of left side wall fin panel casing 3-3 and right-side wall fin panel casing 3-4 is gone out and is entered convection pass, left side convection current tube panel tube bank 4-1 and right side convection current tube panel with strengthening heating surface in sweep of gases convection pass after turning are restrained 4-2 and convection current tube panel external wall membrane wall 4-8, then flow into the part of convective heat exchange tube bundles formula tube panel structure 4 rear portions extensions and the afterbody smoke-box 4-7 of rear wall fin panel casing 3-2 composition, discharge from the outlet of afterbody smoke-box 4-7.If think further to reduce flue-gas temperature, reduce flue gas loss, can be in afterbody smoke-box 4-7 inside or back arrange flue gas deep cooler.
In the time that boiler adopts smoke three-pass structure, be positioned at the rear wall fin panel casing 3-2 of the high-temperature flue gas flow direction that burner 1 burning on front wall fin panel casing 3-1 produces, the high-temperature flue gas carrying out after radiation heat transfer with the fin panel casing of burner hearth surrounding enters convection pass from the furnace outlet of the pipe row formation of having loose bowels at left side wall fin panel casing 3-3 and right-side wall fin panel casing 3-4 rear portion, high-temperature flue gas after turning enters inner side convection pass and washes away left side convection current tube panel tube bank 4-1 and right side convection current tube panel tube bank 4-2 and the convection current tube panel external wall membrane wall 4-8 with strengthening heating surface in convection pass, then flue gas flows to inner side convection pass front end and turns and enter outside convection pass, after washing away left side convection current tube panel tube bank 4-1 and right side convection current tube panel tube bank 4-2 and convection current tube panel external wall membrane wall 4-8, enter afterbody smoke-box 4-7, discharge from the outlet of afterbody smoke-box 4-7.Equally, if think further to reduce flue-gas temperature, reduce flue gas loss, can be in afterbody smoke-box 4-7 inside or back arrange flue gas deep cooler.
Water flow-path operation principle of the present invention is as follows: in the time being hot-water boiler, as depicted in figs. 1 and 2, by left side wall fin panel casing 3-3, right-side wall fin panel casing 3-4 and convective heat exchange tube bundles formula tube panel structure 4 are divided into front and rear, first, boiler blow-down water from water inlet header 5 enter side wall lower header 3-10 rear portion and wall lower header 3-8, through the rear portion heating of left side wall fin panel casing 3-3 and right-side wall fin panel casing 3-4 rise enter side wall upper collecting chamber 3-9 rear portion and after wall upper collecting chamber 3-7, by entering the rear portion of left side convection current tube panel upper collecting chamber 4-4 and right side convection current tube panel upper collecting chamber 4-5 communicating pipe 9, drop to left side convection current tube panel lower header 4-3 and right side convection current tube panel lower header 4-6 from the pipe row at convective heat exchange tube bundles formula tube panel structure 4 rear portions, the heated rising of pipe row of the convective heat exchange tube bundles of flowing through again formula tube panel structure 4 front portions imports left side convection current tube panel upper collecting chamber 4-4 and right side convection current tube panel upper collecting chamber 4-5, then enter side wall lower header 3-10 front portion and front wall lower header 3-5 through down-comer 6, last flow of hot water is through left side wall fin panel casing 3-3, right-side wall fin panel casing 3-4 pipe row anterior and front wall membrane wall 3-1 enters side wall upper collecting chamber 3-9 and front wall upper collecting chamber 3-6 after being heated and rising, flow out supply therrmodynamic system through fairlead.
In the time that boiler is steam boiler, as shown in Figure 3 and Figure 4: convective heat exchange tube bundles formula tube panel structure 4 is divided into front portion, middle part and rear portion three parts, first, boiler feedwater enters left side convection current tube panel lower header 4-3 and right side convection current tube panel lower header 4-6 rear portion from water inlet header 5, the pipe at the convective heat exchange tube bundles of flowing through formula tube panel structure 4 rear portions is heated and rises to left side convection current tube panel upper collecting chamber 4-4 and right side convection current tube panel upper collecting chamber 4-5, the pipe at convective heat exchange tube bundles formula tube panel structure 4 middle parts of continuing to flow through drops to left side convection current tube panel lower header 4-3 and right side convection current tube panel lower header 4-6, from being heated rising, the pipe of convective heat exchange tube bundles formula tube panel structure 4 front portions imports again left side convection current tube panel upper collecting chamber 4-4, right side convection current tube panel upper collecting chamber 4-5 also enters drum 2 through carbonated drink fairlead 7, the down-comer 6 front wall lower header 3-5 to radiation heat transfer fin panel casing that drum 2 bottoms connect supply water, after front wall fin panel casing 3-1 heating, rise and import front wall upper collecting chamber 3-6, introduce drum through carbonated drink fairlead 7 and complete Natural Circulation, the down-comer being connected with drum 2 supplies water to side wall lower header 3-10, left side wall fin panel casing 3-3 on " O " tee section and the heating of the pipe of right-side wall fin panel casing 3-4 are risen and are imported side wall upper collecting chamber 3-9, introduce drum 2 complete Natural Circulation through carbonated drink fairlead 7, the down-comer that drum 2 connects supplies water to rear wall lower header 3-8, through after the pipe heating of the wall fin panel casing 3-2 wall upper collecting chamber 3-7 after remittance that rises, enter drum 2 through carbonated drink fairlead 7 and complete Natural Circulation.The saturated vapor separating through carbonated drink is from drum 2 top export supply therrmodynamic systems.

Claims (8)

1. a novel full tube panel formula high efficiency fuel gas fired-boiler, it is characterized in that: comprise radiation heat transfer fin panel casing tube panel structure (3) and convective heat exchange tube bundles formula tube panel structure (4), described radiation heat transfer fin panel casing tube panel structure (3) comprises front wall fin panel casing (3-1), rear wall fin panel casing (3-2), left side wall fin panel casing (3-3), right-side wall fin panel casing (3-4) and be arranged in the burner (1) on front wall fin panel casing (3-1), described front wall fin panel casing (3-1), rear wall fin panel casing (3-2), left side wall fin panel casing (3-3) and right-side wall fin panel casing (3-4) are at the chamber structure of a sealing of surrounding composition of burner (1),
In the time that boiler adopts flue gas central flame flame structure, pipe row is had loose bowels to form the gas approach of convection heating surface in the front portion of left side wall fin panel casing (3-3) and right-side wall fin panel casing (3-4), be arranged on front wall fin panel casing (3-1) top and the bottom and and its connection be respectively front wall upper collecting chamber (3-6) and front wall lower header (3-5), be arranged on rear wall fin panel casing (3-2) top and the bottom and and its connection be respectively rear wall upper collecting chamber (3-7) and rear wall lower header (3-8), shared side wall upper collecting chamber (3-9) and the side wall lower header (3-10) of four headers and left side wall fin panel casing (3-3) and right-side wall fin panel casing (3-4) is connected, described left side wall fin panel casing (3-3), right-side wall fin panel casing (3-4) and side wall upper collecting chamber (3-9) and side wall lower header (3-10) composition " O " tee section structure, convective heat exchange tube bundles formula tube panel structure (4) comprises left side convection current tube panel tube bank (4-1), the tube bank of right side convection current tube panel (4-2) and convection current tube panel external wall membrane wall (4-8), convective heat exchange tube bundles formula tube panel structure (4) is docked with welding steel (8) with left side wall fin panel casing (3-3) and right-side wall fin panel casing (3-4), be symmetrically distributed in the both sides of " O " shape structure, left side wall fin panel casing (3-3) and right-side wall fin panel casing (3-4) have served as respectively the inside wall membrane wall of left side convection current tube panel tube bank (4-1) and right side convection current tube panel tube bank (4-2) simultaneously, what be arranged on left side convection current tube panel tube bank (4-1) top and the bottom Bing Heqi UNICOM is left side convection current tube panel upper collecting chamber (4-4) and left side convection current tube panel lower header (4-3), what be arranged on right side convection current tube panel tube bank (4-2) top and the bottom Bing Heqi UNICOM is right side convection current tube panel upper collecting chamber (4-5) and right side convection current tube panel lower header (4-6), described convection current tube panel external wall membrane wall (4-8), left side wall fin panel casing (3-3), right-side wall fin panel casing (3-4) and upper and lower welding steel (8) composition both sides sealing convection pass, left side convection current tube panel tube bank (4-1) and right side convection current tube panel tube bank (4-2) are distributed in respectively in the convection pass on both sides,
In the time that boiler adopts smoke three-pass structure, the pipe row at left side wall fin panel casing (3-3) and right-side wall fin panel casing (3-4) rear portion has loose bowels as furnace outlet, in left and right side convection pass, respectively increase by one group of convective heat exchange tube bundles formula tube panel structure (4) with membrane wall the convection pass of both sides is respectively divided into two convection pass, to form smoke three-pass structure.
2. the novel full tube panel formula high efficiency fuel gas fired-boiler of one according to claim 1, it is characterized in that: in the time that described boiler is steam boiler, also comprise and be arranged in the left side wall fin panel casing (3-3) of radiation heat transfer fin panel casing tube panel structure (3) or the drum (2) of right-side wall fin panel casing (3-4) top, described drum (2) is connected by carbonated drink fairlead (7) and each upper collecting chamber.
3. the novel full tube panel formula high efficiency fuel gas fired-boiler of one according to claim 1, is characterized in that: the part that described convective heat exchange tube bundles formula tube panel structure (4) rear portion extends has formed afterbody smoke-box (4-7) with rear wall fin panel casing (3-2).
4. the novel full tube panel formula high efficiency fuel gas fired-boiler of one according to claim 3, is characterized in that: flue gas deep cooler is arranged in described afterbody smoke-box (4-7) inside or back.
5. the novel full tube panel formula high efficiency fuel gas fired-boiler of one according to claim 1, is characterized in that: described radiation heat transfer fin panel casing tube panel structure (3) and convection current tube panel external wall membrane wall (4-8) all adopt light pipe and band steel to be welded or adopt the extended surface tube of direct rolling and forming.
6. the novel full tube panel formula high efficiency fuel gas fired-boiler of one according to claim 1, it is characterized in that: described left side convection current tube panel tube bank (4-1) and right side convection current tube panel tube bank (4-2) all adopt convection current expansion strengthening heating surface, the tube bank of high-temperature region convection current tube panel adopts arc fin (10) enhanced heat exchange, and the tube bank of low-temperature space convection current tube panel adopts pin fin structure (11) enhanced heat exchange.
7. the novel full tube panel formula high efficiency fuel gas fired-boiler of one according to claim 1, it is characterized in that: along left side wall fin panel casing (3-3) and right-side wall fin panel casing (3-4), boiler is divided into radiation heat transfer fin panel casing tube panel structure (3) and convective heat exchange tube bundles formula tube panel structure (4), the mating interface of two modules can use Plate Welding or use sealing bolt or flange connection.
8. the novel full tube panel formula high efficiency fuel gas fired-boiler of one according to claim 1, it is characterized in that: add as required or reduce the tube panel number of left side convection current tube panel tube bank (4-1) and right side convection current tube panel tube bank (4-2), can realize from low capacity to large capacity tube panel formula water pipe single structure.
CN201410023480.3A 2014-01-18 2014-01-18 A kind of novel full tube panel formula high efficiency fuel gas fired-boiler Expired - Fee Related CN103791479B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105698165A (en) * 2016-04-15 2016-06-22 东方电气集团东方锅炉股份有限公司 Combustion chamber structure of circulating fluidized bed boiler
CN111998325A (en) * 2020-09-02 2020-11-27 河南永兴锅炉集团有限公司 Split assembled natural gas fired boiler

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CN103277781A (en) * 2013-04-16 2013-09-04 西安交通大学 Embedded modularized assembly water pipe fuel oil and fuel gas boiler
CN203731369U (en) * 2014-01-18 2014-07-23 西安交通大学 Full-tube screen type efficient oil or gas boiler

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DE2540024A1 (en) * 1974-10-14 1976-04-22 Waagner Biro Ag Steam raising plant with combustion chamber and at least one boiler tr - has super heater pipes parallel to back wall of second boiler train and to evaporater pipe bundle
CN200943946Y (en) * 2006-05-18 2007-09-05 哈尔滨工大格瑞环保能源科技有限公司 Forced circulation water-heating boiler
CN101514811B (en) * 2009-03-17 2011-12-07 西安交通大学 Inclined porch-free corner-tube full film-type wall-circulating fluidized bed boiler
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CN103277781A (en) * 2013-04-16 2013-09-04 西安交通大学 Embedded modularized assembly water pipe fuel oil and fuel gas boiler
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105698165A (en) * 2016-04-15 2016-06-22 东方电气集团东方锅炉股份有限公司 Combustion chamber structure of circulating fluidized bed boiler
CN111998325A (en) * 2020-09-02 2020-11-27 河南永兴锅炉集团有限公司 Split assembled natural gas fired boiler
CN111998325B (en) * 2020-09-02 2021-09-10 河南永兴锅炉集团有限公司 Split assembled natural gas fired boiler

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