Search

CN-121993786-A - High-efficiency combustor and low-load stable combustion boiler

CN121993786ACN 121993786 ACN121993786 ACN 121993786ACN-121993786-A

Abstract

The application provides a high-efficiency combustor and a low-load stable combustion boiler, which relate to the field of thermal power generation and comprise a mounting cylinder, wherein a connecting disc is fixedly arranged at the rear end of the inside of the mounting cylinder, a flow equalizing assembly is arranged in the mounting cylinder, a rotational flow assembly is arranged at the front end of the flow equalizing assembly, a stable flow assembly is arranged at the front end of the rotational flow assembly, a connecting assembly is arranged at the rear end of the connecting disc, a conveying assembly is arranged in the connecting assembly, an air supply assembly is arranged at the rear of the connecting assembly, and a combustion supporting assembly is arranged above the connecting assembly. The application realizes that resistance is reduced and energy consumption of the air blower is reduced by the flow equalizing assembly when the air pressure is high, and the flow speed is increased when the air pressure is low, so that the air flow distribution and the flow speed are uniform, flame negligence caused by uneven flow speed when the load is low is avoided, the air flow is ensured to enter the combustion area at the optimal flow speed, and the stability during combustion is improved.

Inventors

  • CHEN LEI
  • YOU PENG
  • CHEN BIN
  • CHEN JIAN
  • LV YANG

Assignees

  • 华电潍坊发电有限公司

Dates

Publication Date
20260508
Application Date
20260121

Claims (10)

  1. 1. The utility model provides a high-efficient combustor, its characterized in that, including installation section of thick bamboo (1), the inside rear end of installation section of thick bamboo (1) is fixed and is equipped with connection pad (10), the inside of installation section of thick bamboo (1) is equipped with flow equalizing component (4), the front end of flow equalizing component (4) is equipped with swirl component (3), the front end of swirl component (3) is equipped with stationary flow subassembly (2), the rear end of connection pad (10) is equipped with coupling assembling (6), the inside of coupling assembling (6) is equipped with conveying component (7), the rear of coupling assembling (6) is equipped with air supply subassembly (8), the top of coupling assembling (6) is equipped with combustion-supporting subassembly (9), the below of coupling assembling (6) is equipped with ignition module (11), the outside of coupling assembling (6) and air supply subassembly (8) is equipped with installation component (5).
  2. 2. A high efficiency burner according to claim 1, wherein the flow equalizing assembly (4) comprises a plurality of guiding spring plates (41), and the guiding spring plates (41) are fixed on the inner wall of the mounting cylinder (1) in an equidistant inclined manner.
  3. 3. A high efficiency burner according to claim 2, wherein the root of the guiding spring (41) near the inner wall of the mounting cylinder (1) is thinner than the other parts of the guiding spring (41).
  4. 4. A high efficiency burner according to claim 2 or 3, wherein the rear end of the guiding spring (41) is provided with a blocking block (42) fixedly connected with the mounting cylinder (1), and the rear end of the blocking block (42) is provided with an inclined surface.
  5. 5. The efficient burner according to claim 2, wherein the steady flow assembly (2) comprises a blocking ring (21), the blocking ring (21) is fixed in front of the inside of the installation cylinder (1), a separation cylinder (22) is fixedly arranged in the blocking ring (21), a plurality of inlet holes (23) are formed in the separation cylinder (22) at equal intervals, guide sheets (24) are arranged on two sides of the outside of the inlet holes (23), and the guide sheets (24) are fixed in the inside of the separation cylinder (22).
  6. 6. The efficient combustor according to claim 5, wherein the cyclone assembly (3) comprises a mounting plate (31), the mounting plate (31) is located inside the separation barrel (22), a second cyclone sheet (33) which is arranged in a plurality of inclined mode is fixedly arranged on the circumference side of the mounting plate (31) in an equidistant mode, the second cyclone sheet (33) is fixedly connected with the inside of the separation barrel (22), a first cyclone sheet (32) which is arranged in a plurality of inclined mode is fixedly arranged at the front end of the mounting plate (31) in an equidistant mode, and a first through hole which is formed in the mounting plate (31) is formed in the rear of the first cyclone sheet (32).
  7. 7. A high efficiency burner according to claim 1 or 6, wherein the connecting assembly (6) comprises a connecting pipe (61), an input pipe (62) is fixedly arranged at the top end of the connecting pipe (61), the input pipe (62) is communicated with the inside of the connecting pipe (61), and a mounting plate (63) is fixedly arranged at the rear end of the connecting pipe (61).
  8. 8. A high efficiency burner according to claim 7, wherein the conveying assembly (7) comprises a rotary shaft (71), the rotary shaft (71) being located inside the connecting tube (61), the circumferential side of the rotary shaft (71) being fixedly provided with a spiral plate (72).
  9. 9. A low-load stable combustion boiler using the high-efficiency burner as set forth in claim 8, comprising a furnace body (12), wherein a plurality of burner groups are arranged outside the furnace body (12) and arranged up and down, and each burner group comprises four high-efficiency burners respectively arranged at four corners of the furnace body (12).
  10. 10. A low load stable combustion boiler according to claim 9, wherein two of said high efficiency burner outlet extensions located on the diagonal of the furnace body (12) are tangential to circle C1 and the other two of said high efficiency burner outlet extensions are tangential to circle C2.

Description

High-efficiency combustor and low-load stable combustion boiler Technical Field The invention relates to the field of thermal power generation, in particular to a high-efficiency combustor and a low-load stable combustion boiler. Background In order to meet the requirements of the power grid on new energy consumption, the thermal power generating unit needs to have peak regulation capability with the depth reaching 20% -30% of rated load. Currently, achieving low-load stable combustion mainly depends on combustor modification, such as enhancing flue gas backflow or optimizing pulverized coal concentration. However, the prior art has the fundamental defect that the traditional burner adopts a fixed structure, cannot be adjusted in a self-adaptive manner in the full working condition range, so that the flow speed of primary air and powder suddenly drops under low load, the flame is unstable, and the lower stable combustion load limit cannot be broken through on the premise of no auxiliary fuel. This limits the peak shaving capacity and the operating economy of the unit. For example, the utility model patent (202222027087.4) discloses an eccentric combustion head and a burner, and the specification discloses that the eccentric combustion head comprises a fixed plate for fixing with a boiler, a burning gun and a combustion cylinder. The ignition gun is arranged on the outer side of the combustion cylinder, the axial lead of the combustion cylinder and the axial lead of the fixing plate are arranged in a staggered mode, the most far end point of the outer peripheral wall of the combustion cylinder, which is away from the axial lead of the fixing plate, is a point A, the most far end point of the ignition gun, which is away from the axial lead of the combustion cylinder, is a point B, and the distance from the axial lead of the fixing plate to the point A is equal to the distance from the axial lead of the fixing plate to the point B. The utility model achieves the aim of improving the adaptability of the burner and the boiler mounting port by arranging the combustion cylinder eccentrically relative to the fixed plate, and the patent can prove the defects in the prior art. Therefore, the improvement is made by the inventor, and the high-efficiency combustor and the low-load stable combustion boiler are provided. Disclosure of Invention The invention aims to solve the problem that the current burner adopts a fixed structure and cannot be adjusted in a self-adaptive manner in a full working condition range. In order to achieve the above object, the present invention provides the following efficient burner and low-load stable combustion boiler to improve the above problems. The application is specifically as follows: The utility model provides a high-efficient combustor, includes the installation section of thick bamboo, the inside rear end of installation section of thick bamboo is fixed and is equipped with the connection pad, the inside of installation section of thick bamboo is equipped with the subassembly that flow equalizes, the front end of subassembly that flow equalizes is equipped with the whirl subassembly, the front end of whirl subassembly is equipped with the stationary flow subassembly, the rear end of connection pad is equipped with coupling assembling, coupling assembling's inside is equipped with conveying assembly, coupling assembling's rear is equipped with the air supply subassembly, coupling assembling's top is equipped with combustion-supporting subassembly, coupling assembling's below is equipped with ignition module, coupling assembling and air supply subassembly's outside is equipped with the installation component. As a preferable technical scheme of the application, the flow equalizing assembly comprises a plurality of guide elastic pieces, and the guide elastic pieces are fixed on the inner wall of the mounting cylinder in an equidistant inclined manner. As a preferable technical scheme of the application, the root part of the guide elastic sheet, which is close to the inner wall of the mounting cylinder, is thinner than other parts of the guide elastic sheet. As a preferable technical scheme of the application, the rear end of the guide elastic sheet is provided with a blocking block fixedly connected with the mounting cylinder, and the rear end of the blocking block is provided with an inclined plane. As a preferable technical scheme of the application, the steady flow assembly comprises a blocking ring, the blocking ring is fixed in front of the inside of the installation cylinder, a separation cylinder is fixedly arranged in the blocking ring, a plurality of gathering holes are formed in the separation cylinder at equal intervals, guide sheets are arranged on two sides of the outside of the gathering holes, and the guide sheets are fixed in the inside of the separation cylinder. As the preferable technical scheme of the application, the cyclone component comprises a mounting disc, w