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CN-122015109-A - Rotary air preheater

CN122015109ACN 122015109 ACN122015109 ACN 122015109ACN-122015109-A

Abstract

The application provides a rotary air preheater which comprises a shell, a main shaft, a rotor body and a sector plate, wherein the main shaft is connected with the shell, the rotor body is rotationally assembled on the main shaft, the sector plate is symmetrically arranged in the shell and positioned at a gap between the shell and the rotor body, the rotor body comprises a plurality of partition plates, sealing parts are arranged on the partition plates, and when the rotor body rotates in the shell along with the main shaft and the sealing parts pass through the sector plate area, the sealing parts are contacted with the sector plate to form sealing.

Inventors

  • AO HUQI
  • WANG LIFEI
  • WANG XIAOJUAN
  • YANG CHENGQIANG
  • DENG FANGWEN
  • CHANG JIA
  • YANG TAO
  • LIU HONGLIANG

Assignees

  • 国能榆林化工有限公司

Dates

Publication Date
20260512
Application Date
20260209

Claims (10)

  1. 1. A rotary air preheater is characterized by comprising a shell (1), a main shaft, a rotor body (2) and a sector plate (3), wherein the main shaft is connected with the shell (1), the rotor body (2) is rotationally assembled on the main shaft, the sector plate (3) is symmetrically arranged in the shell (1) and positioned at a gap between the shell (1) and the rotor body (2), the rotor body (2) comprises a plurality of compartment plates (21), sealing parts (4) are arranged on the compartment plates (21), and when the rotor body (2) rotates in the shell (1) along with the main shaft and the sealing parts (4) pass through the sector plate (3) area, the sealing parts (4) are contacted with the sector plate (3) to form sealing.
  2. 2. Rotary air preheater according to claim 1, wherein the sealing (4) comprises: The radial sealing plate (41) is fixedly arranged on the first side surface of the compartment plate (21) and is used for being in contact with and sealing with the sector plate (3); The connecting component (42) is fixedly arranged on a second side surface of the compartment plate (21), and the second side surface is opposite to the first side surface; The sealing assembly (43), the sealing assembly (43) set up in coupling assembling (42) keep away from one side of compartment board (21), the clearance is reserved between sealing assembly (43) and radial closing plate (41).
  3. 3. The rotary air preheater according to claim 2, wherein the seal assembly (43) comprises: a connection plate (431), the connection plate (431) being fixedly connected to the connection assembly (42); a sealing sheet (432), wherein the sealing sheet (432) is arranged on one side of the connecting plate (431) facing the sector plate (3) and is used for sealing in contact with the sector plate (3); -a support structure (433), the support structure (433) being arranged on the connection plate (431) for supporting the connection plate (431) and the sealing plate (432).
  4. 4. A rotary air preheater according to claim 3, wherein the support structure (433) comprises: A bonding plate (4331), wherein the bonding plate (4331) is fixedly arranged on one side of the connecting plate (431) away from the connecting assembly (42); The support plate (4332), the first end of backup pad (4332) with laminating board (4331) fixed connection, the second end of backup pad (4332) is towards keeping away from one side of connecting plate (431) extends.
  5. 5. The rotary air preheater according to claim 2, wherein said connection assembly (42) comprises: a panel (421), wherein the panel (421) is fixedly arranged on the second side surface of the compartment plate (21); A transverse plate (422), wherein the transverse plate (422) is arranged on one side of the panel (421) away from the compartment plate (21) and extends in a direction away from the compartment plate (21); The sealing plate (423), sealing plate (423) set up in between compartment board (21) with connecting plate (431), the bottom of sealing plate (423) with panel (421) with the top butt of transverse plate (422) is fixed.
  6. 6. The rotary air preheater according to claim 1, further comprising an extrusion part (7), wherein the housing (1) is respectively provided with a flue gas inlet cylinder (5) and an air outlet cylinder (6), the extrusion part (7) is arranged between the flue gas inlet cylinder (5) and the housing (1), and the extrusion part (7) is used for being heated and deformed after high-temperature flue gas is introduced into the flue gas inlet cylinder (5) so as to drive the sector plate (3) to move towards the rotor body (2).
  7. 7. Rotary air preheater according to claim 6, characterized in that the press section (7) comprises: The heated pipe (71) is arranged in the flue gas inlet cylinder (5) in a suspending manner and is used for absorbing the heat of the flue gas; A heat conduction pipe (72), wherein a first end of the heat conduction pipe (72) is fixedly connected with the heated pipe (71); an expansion cylinder (73), wherein a mounting groove is formed in the position, corresponding to the sector plate (3), of the shell (1), and the expansion cylinder (73) is embedded in the mounting groove and is communicated with the second end of the heat conducting pipe (72); the extrusion column (74), the first end of extrusion column (74) with expansion cylinder (73) orientation one side of sector plate (3) fixed connection, the second end of extrusion column (74) be used for with sector plate (3) butt.
  8. 8. The rotary air preheater according to claim 7, further comprising a cover plate (8), wherein the cover plate (8) is disposed at a notch of the installation groove and is located at a side of the expansion cylinder (73) away from the extrusion column (74), and the cover plate (8) is connected with the housing (1).
  9. 9. The rotary air preheater according to claim 8, wherein the interiors of the heated tube (71), the heat conducting tube (72) and the expansion cylinder (73) are filled with heat conducting oil.
  10. 10. The rotary air preheater according to claim 9, wherein an insulation layer is provided on the outer side wall of the heat conducting tube (72).

Description

Rotary air preheater Technical Field The application belongs to the technical field of air preheaters, and particularly relates to a rotary air preheater. Background The existing rotary air preheater has the problem that the air leakage rate is high in the actual operation process, the air leakage not only causes the electricity consumption of a boiler induced draft fan to be greatly increased and the operation efficiency of a unit to be reduced, but also damages the combustion working condition in the boiler, and affects the safe and stable operation of the boiler in severe cases, wherein the radial air leakage is the most prominent one of various air leakage forms and is mainly caused by the assembly gap between a rotor compartment plate and a fan plate, and air flow easily flows between a flue gas area and an air area through the gap. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art or related art. In order to solve the problems, the application provides a rotary air preheater which comprises a shell, a main shaft, a rotor body and a sector plate, wherein the main shaft is connected with the shell, the rotor body is rotatably assembled on the main shaft, the sector plate is symmetrically arranged in the shell and positioned at a gap between the shell and the rotor body, the rotor body comprises a plurality of compartment plates, sealing parts are arranged on the compartment plates, and when the rotor body rotates in the shell along with the main shaft and the sealing parts pass through the sector plate area, the sealing parts are contacted with the sector plate to form sealing. Optionally, the sealing part includes: The radial sealing plate is fixedly arranged on the first side surface of the compartment plate and is used for being in contact sealing with the sector plate; the connecting component is fixedly arranged on the second side surface of the compartment plate, and the second side surface is opposite to the first side surface; The sealing assembly is arranged on one side, far away from the compartment plate, of the connecting assembly, and a gap is reserved between the sealing assembly and the radial sealing plate. Optionally, the seal assembly includes: The connecting plate is fixedly connected with the connecting assembly; The sealing piece is arranged on one side, facing the sector plate, of the connecting plate and is used for sealing in contact with the sector plate; And the supporting structure is arranged on the connecting plate and is used for supporting the connecting plate and the sealing piece. Optionally, the support structure comprises: the attaching plate is fixedly arranged on one side, away from the connecting assembly, of the connecting plate; the first end of backup pad with laminating board fixed connection, the second end orientation of backup pad is kept away from the one side of connecting plate extends. Optionally, the connection assembly includes: the panel is fixedly arranged on the second side surface of the compartment plate; the transverse plate is arranged on one side of the panel, which is far away from the compartment plate, and extends in a direction far away from the compartment plate; the sealing plate is arranged between the compartment plate and the connecting plate, and the bottom of the sealing plate is fixedly connected with the top of the panel and the top of the transverse plate in an abutting mode. The novel fan-shaped plate rotor comprises a rotor body, and is characterized by further comprising a shell, wherein the shell is provided with a smoke inlet cylinder and an air outlet cylinder respectively, the extrusion part is arranged between the smoke inlet cylinder and the shell and is used for heating and deforming after high-temperature smoke is introduced into the smoke inlet cylinder, and the fan-shaped plate is driven to move towards the rotor body. Optionally, the pressing part includes: the heated pipe is arranged in the flue gas inlet cylinder in a suspending manner and is used for absorbing the heat of the flue gas; the first end of the heat conduction pipe is fixedly connected with the heated pipe; The expansion cylinder is embedded in the mounting groove and is communicated with the second end of the heat conduction pipe; the first end of the extrusion column is fixedly connected with one side, facing the sector plate, of the expansion cylinder, and the second end of the extrusion column is used for being abutted to the sector plate. Optionally, the device further comprises a cover plate, wherein the cover plate is covered at the notch of the mounting groove and is positioned at one side of the expansion cylinder away from the extrusion column, and the cover plate is connected with the shell. Optionally, the heat receiving pipe, the heat conducting pipe and the expansion cylinder are filled with heat conducting oil. Optionally, an insulation layer is arranged on the out