CN-224215940-U - Static sealing structure for rotary heat exchanger for preventing dust accumulation and air leakage of sector plate

CN224215940UCN 224215940 UCN224215940 UCN 224215940UCN-224215940-U

Abstract

The utility model relates to the technical field of rotary heat exchangers, and discloses a static sealing structure for a rotary heat exchanger, which is used for preventing dust accumulation and air leakage of a sector plate. According to the utility model, when the distance between the sector plate and the truss needs to be adjusted, the sector plate drives the L-shaped connecting plate to slide along the surface of the double 90-degree bending plate and the mouth shape avoiding groove, meanwhile, the sector plate drives the clamping plate II, and the clamping plate II drives the sliding plate to slide along the surfaces of the back plate and the upper cover plate, so that the sector plate drives the L-shaped connecting plate to be limited by the double 90-degree bending plate, and simultaneously, the static sealing effect is achieved on the two sides under the barrier of the sliding plate, the upper cover plate and the back plate.

Inventors

HANG WENLIN
TIAN TIAN
YANG YUANMIN
Zhao Ronghang
Gong Hongqiang
WANG YI

Assignees

江苏国信扬州发电有限责任公司

Dates

Publication Date: 20260508
Application Date: 20250611

Claims (6)

1. A static sealing structure for a rotary heat exchanger for preventing dust accumulation and air leakage of a sector plate is characterized by comprising a truss (1), the bottom of the truss (1) is fixedly connected with a double 90-degree bending plate (2), the surface of the double 90-degree bending plate (2) is connected with an L-shaped connecting plate (3) in a sliding way, a sector plate (4) is fixedly connected to the left side of the L-shaped connecting plate (3), the bottom of the truss (1) is fixedly connected with a backboard (5), the right side of the backboard (5) is fixedly connected with a clamping plate I (6), an upper cover plate (7) is fixedly connected to the right side of the first clamping plate (6), the surface of the upper cover plate (7) is connected with a sliding plate (8) in a sliding way, one end of the sliding plate (8) far away from the upper cover plate (7) is fixedly connected with a clamping plate II (9), the left side of the second clamping plate (9) is fixedly connected to the right side of the L-shaped connecting plate (3), an avoidance sliding groove (10) is arranged between the sliding plate (8) and the clamping plate I (6), an opening type avoiding groove (11) is formed between the double 90-degree bending plate (2) and the L-shaped connecting plate (3), a second avoidance sliding groove (12) is arranged between the second clamping plate (9) and the back plate (5), an opening type diversion trench (13) is formed between the backboard (5) and the double 90-degree bending board (2).
2. A static sealing structure for a rotary heat exchanger for preventing dust accumulation and air leakage of a sector plate is characterized in that the outer wall of a back plate (5) is connected to the surface of an L-shaped connecting plate (3) in a sliding mode, and the outer wall of a sliding plate (8) is connected to the surface of the back plate (5) in a sliding mode.
3. The static sealing structure for preventing dust accumulation and air leakage of a sector plate of a rotary heat exchanger according to claim 1, wherein the outer wall of the sliding plate (8) is slidably connected to the inner wall of the avoiding chute (10), the outer wall of the L-shaped connecting plate (3) is slidably connected to the inner wall of the mouth-shaped avoiding chute (11), and the outer wall of the second clamping plate (9) is slidably connected to the inner wall of the second avoiding chute (12).
4. The static sealing structure for preventing dust accumulation and air leakage of a sector plate of a rotary heat exchanger, as set forth in claim 1, is characterized in that two double 90-degree bending plates (2) are arranged, the two double 90-degree bending plates (2) are symmetrically arranged with the sector plate (4) as a center, the two L-shaped connecting plates (3) are arranged, and the two L-shaped connecting plates (3) are symmetrically arranged with the sector plate (4) as a center.
5. A static sealing structure for a rotary heat exchanger for preventing dust accumulation and air leakage of a sector plate is characterized in that two back plates (5) are arranged, the two back plates (5) are symmetrically arranged with the sector plate (4) as a center, two clamping plates I (6) are arranged, and the two clamping plates I (6) are symmetrically arranged with the sector plate (4) as a center.
6. The static sealing structure for preventing dust accumulation and air leakage of a sector plate of a rotary heat exchanger according to claim 1, wherein two upper cover plates (7) are arranged, the two upper cover plates (7) are symmetrically arranged by taking the sector plate (4) as a center, two sliding plates (8) are arranged, the two sliding plates (8) are symmetrically arranged by taking the sector plate (4) as a center, and the two clamping plates (9) are arranged.

Description

Static sealing structure for rotary heat exchanger for preventing dust accumulation and air leakage of sector plate Technical Field The utility model relates to the technical field of static sealing structures, in particular to a static sealing structure for a rotary heat exchanger, which is used for preventing dust accumulation and air leakage of a sector plate. Background The rotary air preheater is a rotary device, and a certain gap is required to be kept between a movable part and a static part. At the same time, there is a pressure difference between the air and the flue gas, which results in air flowing into the flue gas through these gaps, known as blow-by. The air leakage phenomenon not only reduces the efficiency of the equipment, but also affects the safe operation of the preheater in severe cases. Therefore, in order to reduce the air leakage, ensure the performance of the preheater and prolong the service life, the existing static sealing structure of the rotary air preheater needs to be improved. In the rotary air preheater static seal structure in the prior art, the static seal is in a corrugated expansion joint type and is arranged on two sides of a sector plate, after the sealing gap between the sector plate and a sealing plate is adjusted, the static seal, the sector plate and a central truss are subjected to seal welding on site, the expansion joint is easily worn towards the smoke and air sides, so that the thickness of the expansion joint is often 3mm, the expansion joint stretches out and draws back to enable the expansion joint to have large force and require large force to adjust the sector plate, and secondly, the thickness of the expansion joint is 3mm, after the expansion joint is flushed by smoke in practical application, obvious wear and even ash leakage are often started to occur, after long-term operation, the ash accumulation in the sector plate is serious, the load of the sector plate is increased, the lifting is difficult, and in addition, the air leakage rate of the air preheater is increased after the static seal is damaged. Disclosure of utility model In order to solve the technical problems, the utility model provides a static sealing structure for a rotary heat exchanger, which is used for preventing dust accumulation and air leakage of a sector plate. The static sealing structure for preventing dust accumulation and air leakage of the sector plates of the rotary heat exchanger comprises a truss, wherein double 90-degree bending plates are fixedly connected to the bottom of the truss, L-shaped connecting plates are slidably connected to the surfaces of the double 90-degree bending plates, sector plates are fixedly connected to the left sides of the L-shaped connecting plates, backboard is fixedly connected to the bottom of the truss, a first clamping plate is fixedly connected to the right sides of the backboard, an upper cover plate is fixedly connected to the right sides of the first clamping plate, a second clamping plate is fixedly connected to the surface of the upper cover plate, a second clamping plate is fixedly connected to one end of the sliding plate, far away from the upper cover plate, the left sides of the second clamping plate is fixedly connected to the right sides of the L-shaped connecting plates, an avoidance chute is formed between the double 90-degree bending plates and the L-shaped connecting plates, an avoidance chute is formed between the second clamping plate and the backboard, and an opening-shaped guide chute is formed between the backboard and the double 90-degree bending plates. As a further improvement of the scheme, the outer wall of the backboard is connected with the surface of the L-shaped connecting plate in a sliding mode, and the outer wall of the sliding board is connected with the surface of the backboard in a sliding mode. As the further improvement of above-mentioned scheme, sliding plate outer wall sliding connection is dodging the spout inner wall, L type connecting plate outer wall sliding connection dodges the inslot wall at the mouth shape, splint two outer wall sliding connection is dodging spout two inner walls. Through the technical scheme, when the distance between the sector plate and the truss needs to be adjusted, the sector plate drives the L-shaped connecting plate to slide along the surface of the double 90-degree bending plate and the notch-shaped avoiding groove, and meanwhile, the sector plate drives the clamping plate II, and the clamping plate II drives the sliding plate to slide along the surface of the back plate and the upper cover plate. As a further improvement of the scheme, two double 90-degree bending plates are arranged, the two double 90-degree bending plates are symmetrically arranged by taking a sector plate as a center, two L-shaped connecting plates are arranged, and the two L-shaped connecting plates are symmetrically arranged by taking the sector plate as a center. As a further improvement of t