CN101187467A - Low discharge high energy efficiency vertical shell type water-fire tube boiler - Google Patents
Low discharge high energy efficiency vertical shell type water-fire tube boiler Download PDFInfo
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- CN101187467A CN101187467A CNA2007101306391A CN200710130639A CN101187467A CN 101187467 A CN101187467 A CN 101187467A CN A2007101306391 A CNA2007101306391 A CN A2007101306391A CN 200710130639 A CN200710130639 A CN 200710130639A CN 101187467 A CN101187467 A CN 101187467A
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Abstract
A vertically-arranged spiral-cased water-gas-tube boiler which is low in discharge and high in energy efficiency relates to thirties big boilers series, namely that large-sized and middle-sized water-gas-tube grate firing boilers of loose coal, molded coal, biological energy and gas and fuel oil for household, and comprises a hot-water boiler, a vapor boiler, a phase-change heat transfer hot-water boiler and a distributed thermo-electricity cogeneration boiler. The invention comprises a longitudinally-arranged barrel, a crossbar collection chamber, a wall-cooling pipe, a vertically-arranged spiral casing, and a thread flue tube and the like. The invention changes the flue way of a current water-gas-tube boiler from a longitudinal flue way which horizontally returns front and rear to a transverse flue way which vertically returns up and down. Smoke is naturally realized two large flashes before entering the flue tube. The vertically-arranged spiral casing is totally exposed and heated in the tail flue way of the boiler. With the same volume of the boiler and steel consumption, the invention significantly enlarges the capacities of a hearth and the flue way and radiating convection heating area. Only one baffle is arranged in five returns of a coal-fired hot water total forced-circulation waterway, and three returns of a gas-fired total forced-circulation waterway is not provided with a baffle, which not only completely eliminates tube explosion, tube plate crack and fuel tube abrasion, but also a smoke sedimentation chamber is arranged on the front bottom portion of a smoke-discharge mouth, which largely reduces the initial discharge concentration of smoke.
Description
Technical field
The present invention relates to 20 cauldron series, promptly big-and-middle-sized vertical shell type water-fire tube grate firing raw coal, moulded coal, living beings and chamber combustion combustion gas, fuel oil: hot water, steam, phase transformation and distributed combined heat and power generation boiler.
Background technology
Indulge and put the development of shell type water-fire tube boiler through decades, once be that tube-plate fracture and pipe explosion accident rate are the highest, but also be the highest type of furnace of industry output, because this type of furnace is simple and compact for structure, make easy for installation, short construction period, floor space is little, advantages such as the heat transfer coefficient height does not leak out, institute is so that this type of furnace can constantly be developed, and especially in recent ten years, big capacity water-fire tube hot water boiler development rapidly, tube-plate fracture and booster defective have had basic improvement, make fire tube boiler occupy the position in industrial boilers in China market first always.However, this type of furnace also has the wide scope of application and development potentiality.The scope of application is hopeful fully to the steam boiler of large-scale grate firing and chamber combustion, Phase transformation boiler and the development of distributed combined heat and power generation boiler.Development potentiality is exactly to solve the six big outstanding shortcomings that this type of furnace is still still being deposited, and first flue gas resistance is big, air-introduced machine power consumption height, obviously influences comprehensive efficiency; It two is the original discharge concentration height of boiler smoke, and is big with the gap of advanced country in the world; It three is easily dust stratification, ash disposal troubles in flue and the smoke pipe; It four is the easy effect of attrition of smoke pipe service life; It five is that the shell effective rate of utilization of being heated is low, wastes steel; It six is that shell is vertically unsettled higher, poor seismic behavior.
From the highest novel shell and the large-scale underlying shell type water-fire tube coal-fired hot-water boiler put of occupation rate the most in vogue in the market, more than six big outstanding shortcomings still exist, and the structure of these two kinds of type of furnaces, determined the existence of these six big outstanding shortcomings to be inevitable, inevitably.Solve this six big shortcoming to giving full play to its advantage, to listing the coal-burned industrial boiler of position first of the national energy-conservation key project in, significant to building resource-conserving and friendly environment society.
Summary of the invention:
Improve the large-scale fire tube boiler of present pan shell type existing above-mentioned six big outstanding shortcomings greatly, and be widely used in grate firing and chamber combustion, forced-circulation hot water boiler, steam boiler, phase change heat exchange hot water boiler and distributed combined heat and power generation boiler.
Purpose of the present invention can reach by following embodiment: the present invention changes in the past vertical and puts horizontal shell and vertical equity front and back row flue, for the vertical shell of vertically-arranged with laterally vertically toward smoke returning flue, flue dust is realized big twice dilatation before entering smoke pipe naturally, the volume and the radiation and convection heating surface of burner hearth and flue have so not only significantly been enlarged, and a large amount of dusts all is deposited on the fire grate and chimney arch on, significantly reduced flow resistance, reduced the dust that enters smoke pipe, reduced power consumption, reduced the original discharge concentration of flue dust, eradicated wearing and tearing smoke pipe.Vertical shell is all exposed to be heated in boiler back end ductwork, has increased exponentially the effective rate of utilization that shell is heated.
The upright base mucking machine rear end that is loaded on of shell of the present invention, the surface seems and has increased boiler length, has shortened length in fact, has reduced the ventilation shaft cost, because what shell occupied is the space of ventilation shaft and elbow, saved the pipeline section of draft bend and boiler height.
Description of drawings
Fig. 1 is a grate firing forced-circulation hot water boiler front view of the present invention
Fig. 2 is a grate firing forced-circulation hot water boiler vertical view of the present invention
Fig. 3 is a chamber combustion forced-circulation hot water boiler front view of the present invention
Fig. 4 is a grate firing forced-circulation hot water boiler left view of the present invention
Fig. 5 is grate firing superheated steam of the present invention or station boiler front view
Fig. 6 is grate firing superheated steam of the present invention or station boiler left view
Fig. 7 is chamber of the present invention combustion superheated steam or station boiler front view
Fig. 8 is chamber of the present invention combustion superheated steam or station boiler left view
In the drawings: 1 fire grate, 2. vertical down collection case, 3. communicating pipe, 4. horizontal collection case under the face arch, 5. face arch, 6. blast pipe, 7. preceding arch tube (wall coil), 8. rear arch, 9. rear arched tube, 10. front wall, 11. firebreak, 12. burner hearth, 13. water screen tube, 14. horizontal collection case on the rear arch, 15. horizontal collection case on the face arch, 16. communicating pipe, 17. communicating pipe, 18. the vertical drum of putting, 19. outlet pipe, 20. dividing plate, 21. convection bank, 22. firebreak, horizontal collection case is gone up in 23 backs, 24. tedge, 25. side wall pipe, 26. the little collection case of upside, 27. back wall coil, 28. back wall, 29. vertical shell, 30. expansion space (secondary furnace), 31. convection bank, 32. flue, 33. horizontal collection case under the rear arch, 34. sealant, 35. ashpit, 36. communicating pipe, 37. water inlet collection case, 38. water inlet pipe, 39. back wall header, 40. blow-off pipe, 41. buttress, 42. exhaust opening, 43. bridle iron, 44. cover plate, 45. ash port, 46. ashpit, 47. threaded flue, 48. the little collection case of downside, 49. side wall, 50. base, 51. following vertical center collection case (drum), 52. preceding little collection case down, 53. preceding little collection case, 54. decline header, 55. communicating pipe, 56. the back is little collection case down, 57. exhaust opening, 58. burner, 59. preceding down-comer, 60. communicating pipe, 61. superheater, 62. feed pipe, 63. feedwater collection case, 64. back down-comer, 65. the little horizontal collection case of rest cigarette wall, 66. communicating pipe, 67. communicating pipe, the water inlet 68. the front side descends, 69. preceding down-comer, 70. preceding decline water outlet, 71. back decline water outlet, 72. back down-comer, 73. gate valve, 74. gate valve, the water inlet 75. rear side descends, 76. back down-comer, 77. gate valve, the water inlet 78. the back descends, 79. rear side decline water outlet, 80. dust chamber.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in detail; A kind of low discharge high energy efficiency vertical shell type water-fire tube boiler comprises: the vertical drum (18) of putting, the vertical collection case (2) (15) (14) (23) (33) of putting; Vertically-arranged drum (29), threaded flue (47), water screen tube (13) convection bank (21) (31) rear cabinet pipe (27) side wall pipe formations such as (25).It is characterized in that, put drum (18) longitudinal center uniform connection of bottom with vertical the inner of water screen tube (13), its lower end and following vertical vertical uniform connection of central upper portion of putting collection case (2), the upper end of forward and backward arch tube (7) (9) respectively with forward and backward arch on uniform connection of lower, transverse center of horizontal collection case (15) (14), its lower end respectively with forward and backward arch under the inboard of horizontal collection case (4) (34) laterally be connected.Communicating pipe (16), many its upper ends radially connected from vertical bottom of putting drum (18) front end one segment distance, the upper lateral center of horizontal collection case (15) is connected on its lower end and the face arch, and the lower central of the upper end of communicating pipe (3) horizontal collection case (4) two ends one segment distance under face arch connects.The posterior transversal center of horizontal collection case (14) radially is connected on the lower side on the last front end of convection bank (21) and the rear arch, and the central upper portion of horizontal collection case (33) radially is connected before partially under its lower end and the rear arch.The lower, transverse center of horizontal collection case (14) is connected on the upper end of rear arched tube (9) and the rear arch, under its lower end and the rear arched tube front cross center of horizontal collection case on the upper side the radial center upper end that connects pipe (17) with vertical put drum (18) vertically the side center be following be connected, the upper lateral center of horizontal collection case (14) is connected on its lower end and the rear arch.Vertical shell (29) is at boiler tail end horizontal collection case (33) one segment distances under rear arch, and with back wall header (39), the little collection case of downside (48), the whole horizontal plane of horizontal collection case (33) all constitutes sealant (34) with refractory material casting under the rear arch, flue gas is entered force behind the flue (32) upper end of the vertical shell (29) that upwards flows to enter threaded flue (47) and comes downwards to exhaust opening (42) and discharge.The upper end of back wall coil (27) radially is connected on the lower side with the back horizontal center that horizontal collection case (23) is gone up in the back.The bottom longitudinal center of the little collection case of upside (26) connects, and its lower end is connected with the top longitudinal center of the little collection case of downside (48).The upper end of convection bank (31) is connected with the front cross center that horizontal collection case (23) is gone up in the back.The front end of communicating pipe (36) connects from the center, rear portion of vertical shell lower end one segment distance, the parallel connection of front central of its rear end and water inlet collection case (37), and water inlet pipe (38) is installed one or two with the center, rear portion (3) that water inlet collects case (37).
Five backhauls of grate firing forced-circulation hot water boiler water route are only established a dividing plate (20) in vertical longitudinal center of putting drum (18) after partially, are the tube bank that descends at the rear portion water screen tube (13) of dividing plate (20), are the tube bank of rising at the anterior water screen tube of dividing plate (20) (13).The chamber combustion is that three backhauls of combustion gas (oil) forced-circulation hot water boiler do not have dividing plate.Water screen tube (13) all is the tube bank of rising.
Forced-circulation hot water boiler, firebreak (22) lower end convection bank be crook and the effect of formation rest firebreak (22) naturally near not needing special framework of convection bank (21) bent angle back and forth.
When boiler erection during at two floors, exhaust opening (42) is at first floor bottom rear side, and the bottom is dust chamber (80).When boiler erection was on terrace, flue advanced trench, and the trench bottom is dust chamber (80), and the trench posterior vertical upwards is exhaust opening (57).
Go up the top of horizontal collection case (23) behind the forced-circulation hot water boiler and put drum (18) near not being communicated with vertical, have only exhaust performance≤communicating pipe of Φ 51, the ascending water that difference is exerted oneself is all gone up horizontal collection case (23) back all by connected convection bank after too much root tedge (24) enters, wall coil (31) (25) (27) descends and enters horizontal collection case (33) under the rear arch.Steam boiler, horizontal collection case (23) was put drum (18) and is communicated with vertical by communicating pipe (60) on the back, made pot to fall under water or mix rising.The feed water bottom of little collection case (63) is connected with tedge (24) with rear lateral portion, and its top is connected with feed pipe (62).
The superheater of grate firing superheated steam boiler and distributed station boiler (61) is installed in the secondary furnace.The chamber combustion is the centre that the superheater (61) of combustion gas (oil) superheated steam and distributed station boiler is installed in vertical shell (29) and firebreak (22).
Phase change heat exchange hot water boiler is installed the steam-water heat exchanging tube bank or the boiler top gets final product with a plurality of communicating pipes connection vapor-water heat exchangers according to the phase-change heat-exchange principle vertical putting in the drum.The instrument valve of boiler is all installed successively by prior art.Its cut protection device of forced-circulation hot water boiler; by front side decline water inlet (68), preceding down-comer (69), preceding decline water outlet (70); back decline water outlet (71); back down-comer (72), gate valve (73) (74), rear side decline water inlet (75); back down-comer (76); gate valve (77), back decline water inlet (78) rear side decline water outlet (79), the pot water natural cycle system of formation power failure back unlatching.Be provided with dust chamber (80) in the preceding bottom of exhaust opening (42) and (57).According to different fuel and different medium, get final product according to existing combustion technology and valve instrument design.
Its grate firing forced-circulation hot water boiler water route, water inlet enters into water collection case (37) from water inlet pipe (38), after entering by many tedges (24), the slow rising of vertical shell (29) upward enters convection bank (31) again respectively behind the horizontal collection case (23) by entering communicating pipe (36), rear flank wall coil (25), back wall coil (27) also descends, enter horizontal collection case (33) under the rear arch respectively, enter horizontal collection case (14) on the rear arch by rear arched tube (9) and convection bank (21) respectively again, again by entering the vertical shell (18) of putting many communicating pipes (17), whole water screen tubes (13) decline by dividing plate (20) rear portion enters down vertical collection case (2) back respectively to moving ahead, rise to indulge by anterior whole water screen tubes (13) of dividing plate (20) and preceding arch tube (7) again and put drum (18), be sent to heating system by outlet pipe (19).
Its grate firing steam boiler water route, water inlet enters into water collection case (37) from water inlet pipe (38), slowly rise by entering vertical shell (29) communicating pipe (36), enter feedwater collection case (63) by tedge (24), evenly send into the vertical drum (18) of putting by feed pipe (62), drop to vertical collection case (2) by preceding down-comer (59) and back down-comer (64), by communicating pipe (3) (67), enter water screen tube (13) and front and back arch tube (7) (9) and rise to and vertical put drum (18), the saturated vapor of generation is sent to the vapour system by gas outlet (19) or enters and is sent to the vapour system that uses after superheater further improves vapor (steam) temperature.
Its combustion forced-circulation hot water boiler water route, chamber, water inlet enters into water collection case (37) from water inlet pipe (38), after entering by tedge (24), the slow rising of vertical shell (29) upward enters convection bank (31) again respectively behind the horizontal collection case (23) by entering communicating pipe (36), side wall pipe (25), back wall coil (27) also descends respectively by back wall header (39), the little collection case of downside (48) back enters down vertical center collection case (drum) (51) by little collection case (56) down, rises to indulge by water screen tube (13) and preceding wall coil (7) again and puts drum (collection case) (18) and be sent to heating system by outlet pipe (19).
Its combustion steam boiler water route, chamber, water inlet enters into water collection case (37) from water inlet pipe (38), slowly rise and enter feedwater collection case (63) by tedge (24) and evenly send into to indulge by feed pipe (62) and put drum (18) by entering vertical shell (29) communicating pipe (36), drop to vertical center collection case (drum) (51) by preceding down-comer (59) and back down-comer (64), rise to the vertical a part of convection bank of drum (18) (31) the back wall coil (27) of putting by water screen tube (13) and preceding wall coil (7) again, side wall pipe (25) mixes rise and fall to vertical drum (18) and the down vertical collection case (51) put, and the saturated vapor that makes it to produce is sent to the vapour system or enters by gas outlet (19) and is sent to the vapour system that uses after superheater further improves vapor (steam) temperature.
Its grate firing boiler cigarette road, the thermal-flame of coal burning enters burner hearth (12) through forward and backward arch (5) (8) burner, flame rises and descendingly backward to wash away convection bank (21) and enter expansion space (combustion chamber) (30), row washes away convection bank (21) (31) and enters flue (32) backward again, to going upward to wall coil (25) (27) ceiling, enter threaded flue (47) downwards and discharge by exhaust opening (42) or (57) at last.
Its combusting boiler cigarette road, chamber, gas or oil are lighted by burner (58) and are entered burner hearth (12) back row downwards, enter flue (32) to going upward to wall coil (25) (27) ceiling through decline header or the little horizontal collection case of cigarette wall (64) (65) bottom smokestack, enter threaded flue (47) downwards and discharge by exhaust opening (57) at last.
Claims (9)
1. low discharge high energy efficiency vertical shell type water-fire tube boiler, comprise: the vertical drum (18) of putting, collect case (2) (15) (14) (23) (33) vertically-arranged drum (29) in length and breadth, threaded flue (47), water screen tube (13), convection bank (21) (31) back wall coil (27), side wall pipe formations such as (25).It is characterized in that, upward inner and vertical the putting drum (18) longitudinal center uniform connection of bottom of water screen tube (13), its lower end and vertical uniform connection of central upper portion of indulging collection case (2) down, the upper end of forward and backward arch tube (7) (9) respectively with forward and backward arch on uniform connection of lower, transverse center of horizontal collection case (15) (14), its lower end respectively with forward and backward arch under the inboard of horizontal collection case (4) (34) laterally be connected.Communicating pipe (16), many its upper ends radially connected from vertical bottom of putting drum (18) front end one segment distance, the upper lateral center of horizontal collection case (15) is connected on its lower end and the face arch, and the lower central of the upper end of communicating pipe (3) horizontal collection case (4) two ends one segment distance under face arch connects.Its lower end is connected from front end one segment distance with the central upper portion of indulging collection case (3) down.The posterior transversal center of horizontal collection case (14) radially is connected on the lower side on the last front end of convection bank (21) and the rear arch, and the central upper portion of horizontal collection case (33) radially is connected before partially under its lower end and the rear arch.The lower, transverse center of horizontal collection case (14) is connected on the upper end of rear arched tube (9) and the rear arch, and the front cross center of horizontal collection case radially is connected on the upper side under its lower end and the rear arched tube.The upper end of communicating pipe (17) with vertical put drum (18) vertically the side center be following be connected, the upper lateral center of horizontal collection case (14) is connected on its lower end and the rear arch.
2. a kind of low discharge high energy efficiency vertical shell type water-fire tube boiler according to claim 1, it is characterized in that, vertical shell (29) is at boiler tail end horizontal collection case (33) one segment distances under rear arch, and with back wall header (39), the little collection case of downside (48), the whole horizontal plane of horizontal collection case (33) all constitutes sealant (34) with refractory material casting under the rear arch, flue gas is entered force behind the flue (32) upper end of the vertical shell (29) that upwards flows to enter threaded flue (47) and comes downwards to exhaust opening (42) and discharge.The last front end of back wall coil (27) radially is connected on the lower side with the back horizontal center that horizontal collection case (23) is gone up in the back, and its lower end is connected with the upper lateral center of back wall header (39).The front end of the little collection case of upside (26) is gone up horizontal collection case (23) two ends one segment distance from the back center, rear portion connects, the upper end of side wall pipe (25) is connected with the bottom longitudinal center of the little collection case of upside (26), and its lower end is connected with the top longitudinal center of the little collection case of downside (48).The upper end of convection bank (31) radially is connected on the lower side with the front cross center that horizontal collection case (23) is gone up in the back, and the upper lateral center of horizontal collection case (33) is connected under its lower end and the rear arch.The front end of communicating pipe (36) connects from the center, rear portion of vertical shell lower end one segment distance, the parallel connection of front central of its rear end and water inlet collection case (37), and water inlet pipe (38) is installed one or two with the center, rear portion (33) that water inlet collects case (37).
3. a kind of low discharge high energy efficiency vertical shell type water-fire tube boiler according to claim 1, it is characterized in that, five backhauls of grate firing forced-circulation hot water boiler water route are only established a dividing plate (20) in vertical longitudinal center of putting drum (18) after partially, rear portion water screen tube (13) at dividing plate (20) is the tube bank that descends, and is the tube bank of rising at the anterior water screen tube of dividing plate (20) (13).The chamber combustion is that three backhauls of combustion gas (oil) forced-circulation hot water boiler do not have dividing plate.Water screen tube (13) all is the tube bank of rising.
4. a kind of low discharge high energy efficiency vertical shell type water-fire tube boiler according to claim 1, it is characterized in that, forced-circulation hot water boiler, firebreak (22) lower end convection bank be crook and the effect of formation rest firebreak (22) naturally near not needing special member of convection bank (21) bent angle back and forth.
5. a kind of low discharge high energy efficiency vertical shell type water-fire tube boiler according to claim 1 is characterized in that exhaust opening (42) is installed in first floor bottom rear side when boiler erection during at two floors, and the bottom is dust chamber (80).When boiler erection was on terrace, flue advanced trench, and the bottom is dust chamber (80), and the rear end is exhaust opening (57) vertically upward.
6. a kind of low discharge high energy efficiency vertical shell type water-fire tube boiler according to claim 1, it is characterized in that, drum (18) is put near not being communicated with indulging in the top of going up horizontal collection case (23) behind the forced-circulation hot water boiler, only establish an exhaust performance≤communicating pipe of φ 51.The ascending water that difference is exerted oneself all passes through tedge (24) and enters back horizontal collection case (23) back of all by connected convection bank, wall coil (31) (25) (27) descends and to enter horizontal collection case (33) under the rear arch. and go up horizontal collection case (23) behind the steam boiler and lead to siphunculus (60) and put drum (18) and be communicated with, make and pot fall under water or mix rising with vertical.The feed water bottom of little collection case (63) is connected with tedge (24) with rear lateral portion, and its top is connected with feed pipe (62).
7. a kind of low discharge high energy efficiency vertical shell type water-fire tube boiler according to claim 1 is characterized in that the superheater (61) of grate firing superheated steam boiler and distributed station boiler is installed in the secondary furnace; The chamber combustion is the centre that the superheater (61) of combustion gas (oil) superheated steam and distributed station boiler is installed in vertical shell (29) and firebreak (22).Phase change heat exchange hot water boiler is installed the steam-water heat exchanging tube bank or is got final product with a plurality of communicating pipes connection vapor-water heat exchangers at the drum top vertical putting according to the phase-change heat-exchange principle in the drum.
8. a kind of low discharge high energy efficiency vertical shell type water-fire tube boiler according to claim 1; it is characterized in that; its cut protection device of forced-circulation hot water boiler; by front side decline water inlet (68); preceding down-comer (69); preceding decline water outlet (70); back decline water outlet (71), back down-comer (72), gate valve (73) (74); back decline water inlet (75); back down-comer (76), gate valve (77), back decline water inlet (78); rear side decline water outlet (79) constitutes the pot water natural cycle system of opening the back that has a power failure.On the back horizontal collection case (23) and the back horizontal arch under horizontal collection case (33) constitute independently rise and fall pot water circulation system respectively.
9. a kind of low discharge high energy efficiency vertical shell type water-fire tube boiler according to claim 1 is characterized in that, is provided with dust chamber (80) in the preceding bottom of exhaust opening (42) and (57).
According to different fuel and different medium, get final product according to the design that has combustion technology and valve instrument now.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101306391A CN101187467A (en) | 2006-11-22 | 2007-07-12 | Low discharge high energy efficiency vertical shell type water-fire tube boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610145558.4 | 2006-11-22 | ||
| CN200610145558 | 2006-11-22 | ||
| CNA2007101306391A CN101187467A (en) | 2006-11-22 | 2007-07-12 | Low discharge high energy efficiency vertical shell type water-fire tube boiler |
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| CN101187467A true CN101187467A (en) | 2008-05-28 |
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| CNA2007101306391A Pending CN101187467A (en) | 2006-11-22 | 2007-07-12 | Low discharge high energy efficiency vertical shell type water-fire tube boiler |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604111A (en) * | 2013-12-06 | 2014-02-26 | 上海新业锅炉高科技有限公司 | Respiratory header used in once-through boiler |
| CN108332417A (en) * | 2018-03-23 | 2018-07-27 | 博瑞特热能设备股份有限公司 | Forced-circulation hot water boiler |
| CN110848654A (en) * | 2019-11-27 | 2020-02-28 | 哈尔滨红光锅炉总厂有限责任公司 | Large-capacity longitudinally-arranged corner tube boiler |
-
2007
- 2007-07-12 CN CNA2007101306391A patent/CN101187467A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604111A (en) * | 2013-12-06 | 2014-02-26 | 上海新业锅炉高科技有限公司 | Respiratory header used in once-through boiler |
| CN108332417A (en) * | 2018-03-23 | 2018-07-27 | 博瑞特热能设备股份有限公司 | Forced-circulation hot water boiler |
| CN108332417B (en) * | 2018-03-23 | 2024-03-05 | 博瑞特热能设备股份有限公司 | Forced circulation hot water boiler |
| CN110848654A (en) * | 2019-11-27 | 2020-02-28 | 哈尔滨红光锅炉总厂有限责任公司 | Large-capacity longitudinally-arranged corner tube boiler |
| CN110848654B (en) * | 2019-11-27 | 2022-12-23 | 哈尔滨红光锅炉总厂有限责任公司 | Large-capacity longitudinally-arranged corner tube boiler |
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Open date: 20080528 |