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CN-121557477-B - Efficient energy-saving type power plant boiler burner

CN121557477BCN 121557477 BCN121557477 BCN 121557477BCN-121557477-B

Abstract

The invention discloses a high-efficiency energy-saving boiler burner of a power plant, which comprises a combustion mechanism, wherein the combustion mechanism comprises a first-stage air box, the outer surface of the first-stage air box is fixedly connected with a first-stage air inlet pipe, the outer wall of one end of the first-stage air box, which is far away from the first-stage air inlet pipe, is fixedly connected with a first-stage air pipe, the outer surface of the first-stage air pipe is fixedly sleeved with a second-stage air box, the outer wall of the second-stage air box is fixedly connected with a second-stage air inlet pipe, the outer surface of the first-stage air box is provided with an adjusting mechanism, and the outer surface of the second-stage air box is provided with an auxiliary mechanism.

Inventors

  • LI JINGUANG
  • FAN XINGUANG
  • Miao Guiyan
  • LIU ZHONGXIN

Assignees

  • 鲁东大学
  • 山东锦双节能科技有限公司

Dates

Publication Date
20260505
Application Date
20260121

Claims (8)

  1. 1. The utility model provides a high-efficient energy-saving type power plant boiler combustor, includes combustion mechanism (1), combustion mechanism (1) includes one-level bellows (101), the surface fixedly connected with one-level air-supply line (102) of one-level bellows (101), one-level air-supply line (102) are used for injecting primary air to one-level bellows (101) inside, one-level bellows (101) keep away from one-level air-supply line (102) one end outer wall fixedly connected with primary air duct (103), the surface fixed sleeve of primary air duct (103) has second grade bellows (104), the outer wall fixedly connected with second grade bellows (105) of second grade bellows (104), second grade bellows (105) are used for injecting secondary air to inside second grade bellows (104), wherein, the surface of one-level bellows (101) is provided with adjustment mechanism (2), the surface of second grade bellows (104) is provided with auxiliary mechanism (3); The adjusting mechanism (2) comprises: The connecting pipe (201), connecting pipe (201) fixed connection is in the surface of one-level bellows (101), the one end activity that one-level bellows (101) was kept away from to connecting pipe (201) has cup jointed adjustment head (202), the inside of adjustment head (202) is provided with central overgrate air pipe (204), and connecting pipe (201) are used for leading the overgrate air of one-level bellows (101) inside to adjustment head (202) one side to discharge through overgrate air pipe (204), and encircle outer wind channel (205) of overgrate air pipe (204) outside, through-hole (203) have been seted up to the surface of adjustment head (202); The auxiliary mechanism (3) comprises a fixing frame (301), the fixing frame (301) is fixedly connected to the outer surface of the secondary air box (104) through bolts, and a sealing cover (302) is fixedly connected to one end, close to the secondary air box (104), of the fixing frame (301); The inner cavity of the sealing cover (302) is communicated with the inside of the secondary air box (104) and is used for guiding part of secondary air in the secondary air box (104) to the through hole (203) of the adjusting head (202) and conveying the secondary air to one side of the outer air channel (205).
  2. 2. The efficient and energy-saving boiler burner for a power plant according to claim 1, wherein the inner wall of one end of the fixing frame (301) far away from the sealing cover (302) is rotationally connected with the adjusting head (202), and one end of the sealing cover (302) far away from the fixing frame (301) is in sealing connection with the outer surface of the secondary air box (104).
  3. 3. The efficient and energy-saving boiler burner for a power plant according to claim 2, wherein the inner wall of the fixing frame (301) is slidably connected with a toothed ring (303), the outer surface of the fixing frame (301) is fixedly connected with a motor (304), the output end of the motor (304) is fixedly connected with a first gear (305), and the first gear (305) is in meshed connection with the inner teeth of the toothed ring (303).
  4. 4. The efficient and energy-saving boiler burner for a power plant according to claim 3, wherein a clutch (306) is fixedly connected to the outer wall of one side of the fixing frame (301) close to the sealing cover (302), and the output end of the clutch (306) penetrates through the side wall of the fixing frame (301) and is fixedly connected with a second gear (307); The clutch (306) has two working states, namely, in a first state, the second gear (307) is meshed with the toothed ring (303) and the toothed part of the outer wall of the adjusting head (202) at the same time; In the second state, the second gear (307) is disengaged from the toothed ring (303) and the teeth of the outer wall of the adjustment head (202).
  5. 5. The energy-efficient power plant boiler burner according to claim 4, wherein the motor (304) drives the first gear (305) and the toothed ring (303) to rotate, and when the clutch (306) is in the first state, the second gear (307) transmits power to the adjusting head (202) to drive the adjusting head to deflect; when the clutch (306) is in the second state, the transmission of power is interrupted and the adjustment head (202) connected to the interruption remains stationary.
  6. 6. The efficient and energy-saving boiler burner for a power plant according to claim 1, wherein the inner wall of the secondary air box (104) close to the outlet of the secondary air box is rotatably connected with an outer cyclone (106) through a rotating shaft, and the inner wall of one side of the secondary air box (104) close to the outer cyclone (106) is rotatably connected with an inner cyclone (107) through the rotating shaft.
  7. 7. A high efficiency energy saving power plant boiler burner according to claim 6, wherein an inner secondary air duct (108) and an outer secondary air duct (109) are formed between the secondary air box (104) and the primary air duct (103), the inner secondary air duct (108) and the outer secondary air duct (109) being used for classifying and conveying the secondary air into the boiler.
  8. 8. A high efficiency energy efficient power plant boiler burner according to claim 7, wherein said outer swirler (106) is adapted to direct secondary air towards an inner swirler (107) and an outer secondary air duct (109), said inner swirler (107) being adapted to direct secondary air from the outer swirler (106) towards an inner secondary air duct (108).

Description

Efficient energy-saving type power plant boiler burner Technical Field The invention relates to the technical field of combustors, in particular to a high-efficiency energy-saving power plant boiler combustor. Background The boiler burner of the power plant is core equipment of a boiler, and has the main effects of stably and efficiently burning fuel and air in proportion and releasing heat, and modern burners are generally integrated with various technologies so as to realize rapid ignition, flame stabilization and full burnout of coal dust, effectively control the generation of pollutants such as nitrogen oxides and the like, and ensure the economical efficiency and environmental protection of the operation of the boiler. At present, the swing type burner is used as a key adjusting part of a boiler of a power plant, and is an effective means for adjusting a temperature field in the furnace, controlling the emission of nitrogen oxides and preventing coking through the structural design that a nozzle can swing up and down or left and right. However, the existing oscillating burner can only change the flame position entirely, and cannot adjust the fine shape of the flame, so that when the power plant is operated under the requirements of different loads, the burner is difficult to actively optimize the flame shape, and the optimal combustion state cannot be achieved. Disclosure of Invention The invention provides a high-efficiency energy-saving boiler burner of a power plant, when all clutches drive a second gear, and the second gear is meshed with a toothed ring and a toothed part on the outer wall of an adjusting head at the same time, all the adjusting heads deflect in the process that a motor drives the second gear to rotate through a first gear, and then the flame form of the burner can be optimized by means of different deflection angles of the adjusting heads at all positions, so that the optimal combustion state is realized, and the problems in the background art are solved, namely, the existing swinging burner can only integrally change the flame position and cannot adjust the fine shape of flame, so that when the power plant operates under the requirements of different loads, the burner is difficult to actively optimize the flame form, and the optimal combustion state cannot be achieved. In order to achieve the above purpose, the high-efficiency energy-saving type power plant boiler burner comprises a burning mechanism, wherein the burning mechanism comprises a first-stage air box, a first-stage air inlet pipe is fixedly connected to the outer surface of the first-stage air box and used for injecting primary air into the first-stage air box, a first-stage air pipe is fixedly connected to the outer wall of one end of the first-stage air box, which is far away from the first-stage air inlet pipe, a second-stage air box is fixedly sleeved on the outer surface of the first-stage air box and is fixedly connected with a second-stage air inlet pipe, the second-stage air inlet pipe is used for injecting secondary air into the second-stage air box, an adjusting mechanism is arranged on the outer surface of the first-stage air box, an auxiliary mechanism is arranged on the outer surface of the second-stage air box, when the burner is operated as a whole, the dried pulverized coal and the primary air are injected into the first-stage air box through the first-stage air inlet pipe, part of the pulverized coal and the primary air are respectively conveyed to the adjusting mechanism and the first-stage air pipe, and then the pulverized coal sprayed out from the outlet of the first-stage air pipe is ignited through ignition equipment, and meanwhile, the secondary air is injected into the second-stage air box, so that the pulverized coal sprayed out from the first-stage air pipe can be burned normally. In the above technical scheme, adjustment mechanism includes the connecting pipe, connecting pipe fixed connection is at the surface of one-level bellows, the one end activity that the one-level bellows was kept away from to the connecting pipe has cup jointed the adjustment head, the inside of adjustment head is provided with the overgrate air pipe to with encircle the outside outer wind channel of overgrate air pipe, the through-hole has been seted up to the surface of adjustment head. Based on the above-mentioned foundation, assist device includes the mount, the mount passes through bolt fixed connection at the secondary air tank surface, the one end fixedly connected with sealed cowling that the mount is close to the secondary air tank, the one end inner wall that the sealed cowling was kept away from to the mount rotates with the adjustment head to be connected, the one end that the sealed cowling kept away from the mount and the surface sealing connection of secondary air tank. Notably, the inner cavity of the sealing cover is communicated with the inner part of the secondary air box and is used for guiding pa