Magnetic wheel radial sealing device of rotary air preheater

An air preheater and radial sealing technology, applied in heat exchanger sealing devices, heat exchange equipment, lighting and heating equipment, etc., can solve the problem of fast wear and tear of sealing blocks and fan-shaped plates, short service life, aggravated direct impact and Scratch contact and other problems, to achieve the effect of strong thermal deformation adaptability, avoid violent impact and scratch, and smooth movement

Active Publication Date: 2018-12-21
HUAZHONG UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

However, when the sealing block of the device enters and leaves the fan-shaped plate area, there is an instantaneous and suddenly intensified direct impact and scraping contact with the corners on both sides of the fan-shaped plate, and it will also directly scrape the fan-shaped plate during the movement. The average wear of the fan-shaped plates is relatively fast, and the service life is short

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  • Magnetic wheel radial sealing device of rotary air preheater

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0032] like figure 1 As shown, the rotary air preheater magnetic wheel radial sealing device includes: the rotor 2 of the air preheater, the fan-shaped plate 1 installed outside the rotor 2 of the air preheater, and installed between the chambers of the rotor 2 The warehouse partition 3; each warehouse partition 3 is connected to the rotating rod 5 with the magnetic seal wheel 4 through a hinge...

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Abstract

The invention discloses a magnetic wheel radial sealing device of a rotary air preheater, and belongs to the field of power plant boiler equipment. The device comprises a fan-shaped plate, a rotor, magnetic sealing wheels and rotating rods; the fan-shaped plate is arranged at the outer periphery of the rotor; the surface, towards the rotor, of the fan-shaped plate is a magnetic surface; the rotorcomprises cabin separation plates arranged among all cabins of the rotor; the ends, near the fan-shaped plate, of all the cabin separation plates are hinged with the rotating rods; and the magnetic sealing wheels capable of absorbing the magnetic surface are arranged at one ends of all the rotating rods. The device has the characteristics of simple structure, convenience to install and maintain, high heat deformation adaptability of the rotor and low wear degree of sealing pieces, and can effectively achieve the purposes of reducing radial air leakage of the rotary air preheater and improvingthe operation efficiency of the air preheater.

Description

technical field [0001] The invention belongs to the field of power plant boiler equipment, and more specifically relates to a radial gap sealing device for a rotary air preheater at the tail of a power plant boiler. Background technique [0002] The air preheater is the equipment used in the power plant boiler to heat the air by using the heat of the flue gas at the tail of the boiler, and it is an important auxiliary device to improve the overall efficiency of thermal power generation. Large units in modern thermal power plants mostly use rotary air preheaters, which have the characteristics of compact structure, light weight, easy layout, and high heat exchange efficiency, which make them gradually become the main air inlet heating equipment for large boilers. Its working principle is: the left and right sides of the rotor of the rotary air preheater are respectively connected with the flue and the air duct. A heat storage element made of corrugated metal material with hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23L15/00F28F11/02
CPCF23L15/00F28F11/02Y02E20/34
Inventor 张世红任小龙杨海平陈汉平邵敬爱王贤华张雄
Owner HUAZHONG UNIV OF SCI & TECH
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