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Rotary air preheater and corrugated compensation sealing device thereof

A corrugated compensation and sealing device technology, applied in heat exchanger sealing device, engine sealing, heat exchanger shell and other directions, can solve the problems of large equipment loss, high air leakage rate, deterioration, etc., to achieve stable operation and no material loss , good effect of sealing gap

Pending Publication Date: 2021-01-12
XIAN THERMAL POWER RES INST CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

Because the flexible sealing device adopts contact sealing, the loss of the equipment itself is very large during operation, frequent maintenance and replacement of spare parts are required, and its air leakage effect often becomes worse or even worse with the increase of operating time
[0003] In view of the fact that the existing rotary air preheater air leakage control technology has the problem of high air leakage rate during operation, it is necessary to develop a new technology to solve the above problems

Method used

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  • Rotary air preheater and corrugated compensation sealing device thereof
  • Rotary air preheater and corrugated compensation sealing device thereof

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0023] The present invention is a corrugated compensation sealing device for a rotary air preheater, such as figure 1 and figure 2 As shown, it includes the radial sealing sheet 1 adjacent to the sector plate 2, the cantilever 3 used to fix the radial sealing sheet 1, and the corrugation compensation device 4 between the cantilever 3 and the air preheater rotor compartment plate 5;

[0024] One end of the cantilever 3 is fixed on the central cylinder of the rotary air preheater, and the other end is suspended in the air. The suspended end is sealed and matched with the peripheral structure of the air preheater rotor 6; the fixed end is fixed to the central cylinder, and the suspended end is supported on the periphery of the rotor. The sealing structure is fixed on the limit block, so as to ...

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Abstract

The invention relates to the technical field of coal-fired thermal power generating unit operation optimization and energy-saving transformation, in particular to a rotary air preheater and a corrugated compensation sealing device thereof. The corrugated compensation sealing device of the rotary air preheater comprises a radial sealing fin, a cantilever and a corrugated compensation device. One end of the cantilever is fixed to a center barrel of the rotary air preheater, and the other end of the cantilever is suspended. The upper part of the cantilever is connected with the radial sealing finto be in contact and sealed with a sector plate, and the lower part is connected with a corresponding air preheater rotor compartment plate through the corrugated compensation device. The rotary airpreheater comprises an air preheater rotor, and the corrugated compensation sealing device is arranged on the air preheater rotor compartment plate of the air preheater rotor. The rotary air preheaterand the corrugated compensation sealing device thereof are simple in structure, reasonable in design, safe and controllable in operation and capable of effectively controlling the air leakage rate ofthe rotary air preheater in long-term operation, and therefore the air leakage rate of the rotary air preheater is stably reduced for a long time.

Description

technical field [0001] The invention relates to the technical field of operation optimization and energy-saving transformation of coal-fired thermal power units, in particular to a rotary air preheater and a corrugated compensation sealing device thereof. Background technique [0002] The rotary air preheater is widely used in power plant boilers because of its large heat exchange area per unit volume and compact layout. However, the rotor of the rotary air preheater will deform in a mushroom shape during hot operation, resulting in air leakage from the air preheater. If the rate is large, it will affect the thermal efficiency of the air preheater and increase the power consumption of the fan. The existing rotary air preheater air leakage control technology is mainly based on the principle of flexible sealing, using the toughness of the material or using the spring and counterweight device to make the radial sealing piece adjust its position with the change of the sealing ga...

Claims

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Application Information

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IPC IPC(8): F23L15/00F28F9/26F28F11/02F16J15/02
CPCF16J15/02F23L15/00F28F9/266F28F11/02Y02E20/34
Inventor 陈煜房凡严万军吴庆龙马翔
Owner XIAN THERMAL POWER RES INST CO LTD
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