CN102062386B - Rapid-installation water pipe boiler with medium and high pressure single-boiler barrel structure - Google Patents
Rapid-installation water pipe boiler with medium and high pressure single-boiler barrel structure Download PDFInfo
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- CN102062386B CN102062386B CN201110029364A CN201110029364A CN102062386B CN 102062386 B CN102062386 B CN 102062386B CN 201110029364 A CN201110029364 A CN 201110029364A CN 201110029364 A CN201110029364 A CN 201110029364A CN 102062386 B CN102062386 B CN 102062386B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 238000009434 installation Methods 0.000 title abstract 2
- 238000001816 cooling Methods 0.000 claims abstract description 48
- 238000009826 distribution Methods 0.000 claims abstract description 38
- 239000012528 membrane Substances 0.000 claims abstract description 8
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 14
- 239000003546 flue gas Substances 0.000 claims description 13
- 244000144985 peep Species 0.000 claims description 4
- 206010012735 Diarrhoea Diseases 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 239000000779 smoke Substances 0.000 abstract description 2
- 238000003466 welding Methods 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 235000014171 carbonated beverage Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Abstract
The invention relates to a rapid-installation water pipe boiler with a medium and high pressure single-boiler barrel structure. The boiler provided by the invention comprises a boiler barrel, wherein a water cooling device is arranged at the lower part of the boiler barrel; the water cooling device comprises an upper collection tank, a lower collection tank, a small collection tank below a front wall, a small collection tank below a rear wall, a small collection tank above the front wall and a small collection tank above the rear wall; a hearth is formed through four water cooling walls among the collection tanks; each water cooling wall is a welding membrane type wall tube; one water cooling wall is provided with a burner connecting port; the lateral part of one water cooling wall is provided with a convection device; the convection device comprises a water distribution collection tank; a small collection tank below a convection tube beam and a small collection tank above the convection tube beam are arranged at the upper part of the water distribution collection tank; the small collection tank above the convection tube beam and the small collection tank below the convection tube beam are mutually communicated through the convection tube beam; a smoke baffle is arranged at the middle part of the convection tube beam; and the exterior of the whole boiler is provided with a heat insulation layer. The boiler provided by the invention has the advantages that the containable space of the hearth can be increased, the boiler can be rapidly installed and manufactured, and the integral heat treatment does not need to be carried out on the boiler.
Description
Technical field
The present invention relates to the technical field of boiler, be meant a kind of mesohigh list barrel structure quick-fixing water tube boiler especially.
Background technology
Boiler is a kind of chemical energy to be converted into the equipment of heat energy, and it is to utilize various fuel such as coal, oil or gas, produces the equipment that heat produces steam or hot water through burning.Oil, gas fuel are easy to carry, store, and calorific value is high, impurity is few, is used widely on medium small boiler as clean fuel.Existing middle-size and small-size fast-assembling fuel vapor boiler, the low-pressure boiler majority is a smoke pipe structure boiler, and the mesohigh boiler is two barrel structure water-tube boilers mostly.As shown in Figure 5, the structure of two barrel structure water-tube boilers is: comprise base 1, base 1 is provided with lower drum 2; The top of lower drum 2 is provided with upper drum 3, and the top of upper drum 3 is provided with steam (vapor) outlet 4, is interconnected through tube connector 5 between described upper drum 3 and the lower drum 2; Described tube connector 5 is closely arranged each other; Thereby form front wall 8, Hou Qiang, left side wall and right-side wall in a side and form a burner hearth, form convection bank at opposite side, the front wall 8 of burner hearth is provided with burner connector 6; Burner is connected with burner connector 6, and the outer setting of whole boiler has heat-insulation layer 7.When above-mentioned two barrel structure water-tube boilers are worked; Burner constantly is delivered into fuel and air in the burner hearth through burner connector 6 and burns; Water in the upper drum 3 stands the more weak tube connector of ratio of specific heat 5 and gets into lower drum, and the water that gets into lower drum 2 heats in the burner hearth and the more intense convection heating surface that is heated, and becomes steam water interface; Steam water interface gets into upper drum through burner hearth and the convection heating surface that is heated more intense; Steam water interface carries out carbonated drink separation in upper drum 3, the steam of separating is from steam (vapor) outlet 4 discharges and be delivered to the vapour department that uses, and the water of separating mixes the continued recycle with the feedwater of boiler.
Mainly there is following deficiency in two barrel structure water-tube boilers, and pressure is high more or evaporation capacity is obvious more greatly more:
1, because most boiler can receive certain restriction on setting height(from bottom); This has just limited the whole height of boiler; Above-mentioned two barrel structure water-tube boilers have occupied more height space because the diameter of upper drum and lower drum is bigger, thereby but limited the arrangement space of burner hearth;
2, because the diameter of upper drum and lower drum is bigger, has often surpassed the transportation boundary of highway, thereby boiler can not be dispatched from the factory by fast-assembling;
3, upper drum and lower drum are owing to will be connected with each root tube connector; So must have intensive pore on upper drum and the lower drum; Thereby bridge is weakened seriously, have to solve this problem, increased the manufacture difficulty and the cost of boiler through the wall thickness that increases drum; Because the wall thickness of drum increases,, must carry out whole heat treatment again, increased manufacturing cost, and owing to the volume of boiler is bigger, common heat-treatment furnace can't hold adopting welding manner to after being connected between drum and the tube connector.
Summary of the invention
Technical problem to be solved by this invention is: a kind of mesohigh list barrel structure quick-fixing water tube boiler is provided, but can increases the arrangement space of burner hearth, and boiler can be dispatched from the factory by fast-assembling, and boiler need not carry out bulk heat treatmet.
For addressing the above problem, the technical scheme that the present invention adopts is: mesohigh list barrel structure quick-fixing water tube boiler comprises drum; The top of drum is provided with steam (vapor) outlet; The bottom of drum is provided with water cooling plant, and described water cooling plant comprises upper collecting chamber, and described upper collecting chamber is connected with drum through tedge; The bottom of upper collecting chamber is provided with the next part case; Described next part case is connected with drum through next part case down-comer, and described next part case down-comer is positioned at the end of next part case, is interconnected through left side wall water-cooling wall and right-side wall water-cooling wall between upper collecting chamber and the next part case; Described left side wall water-cooling wall and right-side wall water-cooling wall are respectively weldering system membrane wall pipe; Side lower part is had loose bowels and is formed the crust block pipe behind the right-side wall water-cooling wall, and the bottom of described crust block pipe is a warp architecture, and the right-side wall water-cooling wall forms exhaust gases passes in the gap at crust block pipe place; Be respectively arranged with under the front wall little collection case under little collection case and the back wall on the sidewall of next part case; Under the front wall under little collection case and the back wall top of little collection case be provided with on the front wall little collection case on the little collection case and back wall, little collection case is connected with drum through the front wall fairlead on the described front wall, on the wall of described back little collection case through after the wall fairlead be connected with drum; Be interconnected through front water wall between the little collection case under little collection case and the front wall on the described front wall; Be interconnected through rear water wall between the little collection case under little collection case and the back wall on the wall of described back, described front water wall and rear water wall are respectively weldering system membrane wall pipe, form burner hearth between described left side wall water-cooling wall, right-side wall water-cooling wall, front water wall and the rear water wall; Described front water wall is provided with the burner connector, and burner is connected with the burner connector;
The sidepiece of right-side wall water-cooling wall is provided with convection device; Described convection device comprises water distribution collection case; Described water distribution collection case is connected with drum through water distribution collection case down-comer; Described water distribution collection case down-comer is positioned at the end of water distribution collection case, and the top of water distribution collection case is provided with under the convection bank little collection case on the little collection case and convection bank, and little collection case is connected with drum through the convection bank fairlead in the described convection bank; Be interconnected through convection bank between the little collection case under little collection case and the convection bank in the convection bank; Be interconnected through the convection bank inlet tube between little collection case and the water distribution collection case under the described convection bank, the middle part of described convection bank is provided with the flue gas dividing plate, and described flue gas dividing plate is slit into two last separate spaces that are interconnected and following separate space with the spatial between the little collection case under little collection case and the convection bank in the convection bank; Described going up in the separate space is provided with exhanst gas outlet, and the exhaust gases passes of described right-side wall water-cooling wall is connected with following separate space; Described next part case and water distribution collection case all are arranged on the base, and the outer setting of whole boiler has heat-insulation layer.
Described rear water wall is provided with peep hole.
Described next part case is connected with drum through two next part case down-comers, and two next part case down-comers lay respectively at the two ends of next part case, and are positioned at the outside of water cooling plant.
Described water distribution collection case is connected with drum through two water distribution collection case down-comers, and two water distribution collection case down-comers lay respectively at the two ends of water distribution collection case, and are positioned at the outside of convection device.
The invention has the beneficial effects as follows: above-mentioned mesohigh list barrel structure quick-fixing water tube boiler is compared with two barrel structure water-tube boilers and is had the following advantages:
1, replaced lower drum with the collection case, whole boiler only needs a drum, thereby but increased the arrangement space of burner hearth;
2, owing to drum of need, thereby the size that makes boiler can dispatch from the factory by fast-assembling boiler within the transportation boundary of highway;
3, drum only needs to be connected with the collection case through pipeline, thereby no longer has intensive pore on the drum, and weakening of bridge is less, thereby can suitably reduce the wall thickness and the external diameter of drum, has reduced the manufacture difficulty of boiler, has practiced thrift cost; Reducing of drum wall thickness makes boiler need not carry out bulk heat treatmet, further reduced the manufacturing cost of boiler;
Description of drawings
Fig. 1 is the main TV structure sketch map of mesohigh list barrel structure quick-fixing water tube boiler of the present invention;
Fig. 2 is the left TV structure sketch map of Fig. 1;
Fig. 3 is the sectional structure sketch map of A-A direction among Fig. 1;
Fig. 4 is the sectional structure sketch map of B-B direction among Fig. 3;
Fig. 5 is the structural representation of the two barrel structure water-tube boilers described in the background technology;
Among Fig. 1, Fig. 2, Fig. 3, Fig. 4: 1, drum, 2, steam (vapor) outlet, 3, upper collecting chamber, 4, tedge, 5, the next part case, 6, next part case down-comer; 7, left side wall water-cooling wall, 8, the right-side wall water-cooling wall, 9, the crust block pipe, 10, little collection case under the front wall, 11, little collection case under the wall of back, 12, little collection case on the front wall; 13, little collection case on the wall of back, 14, the front wall fairlead, 15, back wall fairlead, 16, front water wall, 17, rear water wall; 18, burner hearth, 19, the burner connector, 20, burner, 21, peep hole, 22, water distribution collection case; 23, water distribution collection case down-comer, 24, little collection case under the convection bank, 25, little collection case in the convection bank, 26, the convection bank fairlead, 27, convection bank; 28, convection bank inlet tube, 29, the flue gas dividing plate, 30, exhanst gas outlet, 31, base, 32, heat-insulation layer;
Among Fig. 5: 1, base, 2, lower drum, 3, upper drum, 4, steam (vapor) outlet, 5, tube connector, 6, the burner connector, 7, heat-insulation layer, 8, front wall.
The specific embodiment
Through specific embodiment mesohigh list barrel structure quick-fixing water tube boiler of the present invention is done further to describe in detail below.
Like Fig. 1, shown in Figure 2, mesohigh list barrel structure quick-fixing water tube boiler comprises drum 1; The top of drum 1 is provided with steam (vapor) outlet 2, and the bottom of drum 1 is provided with water cooling plant, and described water cooling plant comprises upper collecting chamber 3; Described upper collecting chamber 3 is connected with drum 1 through tedge 4, and the bottom of upper collecting chamber 3 is provided with next part case 5, and is as shown in Figure 3; Described next part case 5 is connected with drum 1 through two next part case down-comers 6, and two next part case down-comers 6 lay respectively at the two ends of next part case 5, is interconnected through left side wall water-cooling wall 7 and right-side wall water-cooling wall 8 between upper collecting chamber 3 and the next part case 5; Described left side wall water-cooling wall 7 is respectively weldering system membrane wall pipe with right-side wall water-cooling wall 8, and right-side wall water-cooling wall 8 back side lower parts are had loose bowels and formed crust block pipe 9, and are as shown in Figure 4; The bottom of described crust block pipe 9 is a warp architecture; Right-side wall water-cooling wall 8 forms exhaust gases passes in the gap at crust block pipe 9 places, be respectively arranged with under the front wall little collection case 11 under the little collection case 10 and back wall on the sidewall of next part case 5, under the front wall under little collection case 10 and the back wall top of little collection case 11 be provided with on the front wall little collection case 13 on the little collection case 12 and back wall; Little collection case 12 is connected with drum 1 through front wall fairlead 14 on the described front wall; Little collection case 13 is connected with drum 1 through back wall fairlead 15 on the wall of described back, is interconnected through front water wall 16 between the little collection case 10 under little collection case 12 and the front wall on the described front wall, is interconnected through rear water wall 17 between the little collection case 11 under little collection case 13 and the back wall on the wall of described back; Described front water wall 16 is respectively weldering system membrane wall pipe with rear water wall 17; As shown in Figure 3, form burner hearth 18 between described left side wall water-cooling wall 7, right-side wall water-cooling wall 8, front water wall 16 and the rear water wall 17, described front water wall 16 is provided with burner connector 19; Burner 20 is connected with burner connector 19; As shown in Figure 4, described rear water wall 17 is provided with peep hole 21, is used to observe the combustion case in the burner hearth 18.
The sidepiece of right-side wall water-cooling wall 8 is provided with convection device; Described convection device comprises water distribution collection case 22; Described water distribution collection case 22 is connected with drum 1 through two water distribution collection case down-comers 23; Two water distribution collection case down-comers 23 lay respectively at the two ends of water distribution collection case 22; The top of water distribution collection case 22 is provided with under the convection bank little collection case 25 on the little collection case 24 and convection bank; Little collection case 25 is connected with drum 1 through convection bank fairlead 26 in the described convection bank, is interconnected through convection bank 27 between the little collection case 24 under little collection case 25 and the convection bank in the convection bank, is interconnected through convection bank inlet tube 28 between little collection case 24 and the water distribution collection case 22 under the described convection bank; The middle part of described convection bank 27 is provided with flue gas dividing plate 29; Described flue gas dividing plate 29 is slit into two last separate spaces that are interconnected and following separate space with the spatial between the little collection case 24 under little collection case 25 and the convection bank in the convection bank, and described going up in the separate space is provided with exhanst gas outlet 30, and the exhaust gases passes of described right-side wall water-cooling wall 8 is connected with following separate space; Described next part case 5 all is arranged on the base 31 with water distribution collection case 22, and the outer setting of whole boiler has heat-insulation layer 32.
Operation principle of the present invention is: above-mentioned mesohigh list barrel structure quick-fixing water tube boiler comprises two flow processs, air and gas system flow process and boiler circuit flow process when work.
The air and gas system flow process: during work, burner 20 constantly is delivered into burning in the burner hearth 18 through burner connector 19 with fuel and air, because the weldering system that is all around membrane wall pipe of whole burner hearth 18; Equal the cavity of a sealing,, get into then in the following separate space of convection device so flue gas can only be discharged at the exhaust gases passes of crust block pipe 9 from right-side wall water-cooling wall 8; Flue gas in the following separate space rises through 29 getting into and go up separate space behind the flue gas dividing plate, during because the barrier effect of flue gas dividing plate 29, high-temperature flue gas forms two backhauls in the inside of convection device; To improve the speed enhance heat transfer; The flue gas of separate space is discharged from exhanst gas outlet 30 in the entering, can also economizer be set at exhanst gas outlet 30 according to actual conditions, and economizer is passed through in the feedwater of boiler earlier; Absorb the heat in the tail flue gas; Make feedwater obtain heating, improve water temperature, thereby practiced thrift the energy.
The boiler circuit flow process is: during work; Burner 20 constantly is delivered into burning in the burner hearth 18 through burner connector 19 with fuel and air; Part water in the drum 1 gets into next part casees 5 through next part case down-comer 6, gets into then under the front wall under the little collection case 10 and back wall in the little collection case 11; Part water in the drum 1 gets into water distribution collection case 22 through water distribution collection case down-comer 23, gets into little collection case 24 under the convection bank through convection bank inlet tube 28 then.
Get under next part case 5, the front wall that the water in the little collection case 11 heats under the little collection case 10 and back wall in the heating surface of burner hearth 18; Become steam water interface; The part steam water interface gets into little collection case 12 on the front wall through front water wall 16; Get into drum 1, part steam water interface through little collection case 13 on the rear water wall 17 entering back walls through front wall fairlead 14 then; Through wall fairlead 15 gets into drum 1 later, all the other steam water interfaces get into upper collecting chamber 3 through left side wall water-cooling wall 7 and right-side wall water-cooling wall 8, get into drum 1 through tedge 4 then then.
The water that gets into little collection case 24 under the convection bank heats in convection heating surface, becomes steam water interface, and steam water interface gets into little collection case 25 in the convection bank through convection bank 27, then gets into drum 1 through convection bank fairlead 26.Steam water interface carries out carbonated drink separation in drum 1, the steam of separating is from the steam (vapor) outlet discharge and be delivered to the vapour department that uses, and the water of separating mixes the continued recycle with the feedwater of boiler.
Claims (4)
1. mesohigh list barrel structure quick-fixing water tube boiler comprises drum, and the top of drum is provided with the steam gas outlet; It is characterized in that: the bottom of drum is provided with water cooling plant, and described water cooling plant comprises upper collecting chamber, and described upper collecting chamber is connected with drum through tedge; The bottom of upper collecting chamber is provided with the next part case; Described next part case is connected with drum through next part case down-comer, and described next part case down-comer is positioned at the end of next part case, is interconnected through left side wall water-cooling wall and right-side wall water-cooling wall between upper collecting chamber and the next part case; Described left side wall water-cooling wall and right-side wall water-cooling wall are respectively weldering system membrane wall pipe; Side lower part is had loose bowels and is formed the crust block pipe behind the right-side wall water-cooling wall, and the bottom of described crust block pipe is a warp architecture, and the right-side wall water-cooling wall forms exhaust gases passes in the gap at crust block pipe place; Be respectively arranged with under the front wall little collection case under little collection case and the back wall on the sidewall of next part case; Under the front wall under little collection case and the back wall top of little collection case be provided with on the front wall little collection case on the little collection case and back wall, little collection case is connected with drum through the front wall fairlead on the described front wall, on the wall of described back little collection case through after the wall fairlead be connected with drum; Be interconnected through front water wall between the little collection case under little collection case and the front wall on the described front wall; Be interconnected through rear water wall between the little collection case under little collection case and the back wall on the wall of described back, described front water wall and rear water wall are respectively weldering system membrane wall pipe, form burner hearth between described left side wall water-cooling wall, right-side wall water-cooling wall, front water wall and the rear water wall; Described front water wall is provided with the burner connector, and burner is connected with the burner connector;
The sidepiece of right-side wall water-cooling wall is provided with convection device; Described convection device comprises water distribution collection case; Described water distribution collection case is connected with drum through water distribution collection case down-comer; Described water distribution collection case down-comer is positioned at the end of water distribution collection case, and the top of water distribution collection case is provided with under the convection bank little collection case on the little collection case and convection bank, and little collection case is connected with drum through the convection bank fairlead in the described convection bank; Be interconnected through convection bank between the little collection case under little collection case and the convection bank in the convection bank; Be interconnected through the convection bank inlet tube between little collection case and the water distribution collection case under the described convection bank, the middle part of described convection bank is provided with the flue gas dividing plate, and described flue gas dividing plate is slit into two last separate spaces that are interconnected and following separate space with the spatial between the little collection case under little collection case and the convection bank in the convection bank; Described going up in the separate space is provided with exhanst gas outlet, and the exhaust gases passes of described right-side wall water-cooling wall is connected with following separate space; Described next part case and water distribution collection case all are arranged on the base, and the outer setting of whole boiler has heat-insulation layer.
2. mesohigh list barrel structure quick-fixing water tube boiler according to claim 1, it is characterized in that: described rear water wall is provided with peep hole.
3. mesohigh list barrel structure quick-fixing water tube boiler according to claim 1 and 2; It is characterized in that: described next part case is connected with drum through two next part case down-comers; Two next part case down-comers lay respectively at the two ends of next part case, and are positioned at the outside of burner hearth.
4. mesohigh list barrel structure quick-fixing water tube boiler according to claim 1 and 2; It is characterized in that: described water distribution collection case is connected with drum through two water distribution collection case down-comers; Two water distribution collection case down-comers lay respectively at the two ends of water distribution collection case, and are positioned at the outside of convection bank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110029364A CN102062386B (en) | 2011-01-27 | 2011-01-27 | Rapid-installation water pipe boiler with medium and high pressure single-boiler barrel structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110029364A CN102062386B (en) | 2011-01-27 | 2011-01-27 | Rapid-installation water pipe boiler with medium and high pressure single-boiler barrel structure |
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| CN102062386A CN102062386A (en) | 2011-05-18 |
| CN102062386B true CN102062386B (en) | 2012-10-03 |
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| CN102865665A (en) * | 2012-10-22 | 2013-01-09 | 董珊 | Water cooled wall lower header of large hot water boiler |
| CN105258094A (en) * | 2015-11-13 | 2016-01-20 | 江苏绿叶锅炉有限公司 | Fuel gas natural circulation waste heat boiler |
| CN107166356A (en) * | 2017-06-06 | 2017-09-15 | 江苏四方锅炉有限公司 | A kind of boiler for being used to handle papermaking wastewater |
| CN107191912A (en) * | 2017-07-14 | 2017-09-22 | 江苏太湖锅炉股份有限公司 | A kind of double headers of Small And Medium Capacity combustion gas water pipe steam boiler add small barrel structure |
| CN108410514A (en) * | 2018-04-03 | 2018-08-17 | 山西阳煤化工机械（集团）有限公司 | The double headers of gasification furnace fin panel casing |
| CN112268270B (en) * | 2020-09-03 | 2023-03-31 | 浙江双峰锅炉制造有限公司 | Skid-mounted water pipe type low-nitrogen gas steam boiler |
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| GB1425525A (en) * | 1973-03-15 | 1976-02-18 | Foster Wheeler Power Prod | Boilers |
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| US5176110A (en) * | 1989-10-17 | 1993-01-05 | The Babcock & Wilcox Company | Upflow/downflow heated tube circulating system |
| CN2757017Y (en) * | 2004-12-03 | 2006-02-08 | 李占民 | High energy saving radiation type single tubular boiler |
| CN201513872U (en) * | 2009-09-08 | 2010-06-23 | 哈尔滨红光锅炉总厂 | Water pipe boiler |
| CN201954517U (en) * | 2011-01-27 | 2011-08-31 | 张家港格林沙洲锅炉有限公司 | Medium and high pressure quick assembled water tube boiler with single boiler barrel structure |
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- 2011-01-27 CN CN201110029364A patent/CN102062386B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1425525A (en) * | 1973-03-15 | 1976-02-18 | Foster Wheeler Power Prod | Boilers |
| US5176110A (en) * | 1989-10-17 | 1993-01-05 | The Babcock & Wilcox Company | Upflow/downflow heated tube circulating system |
| CN2117562U (en) * | 1991-12-30 | 1992-09-30 | 沈魁武 | Single cylinder vertically fast installed pipe boiler |
| CN2757017Y (en) * | 2004-12-03 | 2006-02-08 | 李占民 | High energy saving radiation type single tubular boiler |
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| CN102062386A (en) | 2011-05-18 |
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