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Hinge type air preheating sealing device

A technology of air preheating and sealing device, which is applied to the sealing of engines, lighting and heating equipment, and combustion methods, etc. It can solve the problems of insufficient combustion-supporting air in the furnace, increased heat loss of exhaust smoke, and increased ventilation power consumption, etc., to achieve Effects of light weight, increased reliability, and low metal consumption

Inactive Publication Date: 2014-07-02
周惠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Air leakage will not only increase the heat loss of exhaust smoke, but also increase the power consumption of ventilation. In severe cases, it will cause insufficient combustion air in the furnace, which will affect the output of the boiler.

Method used

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  • Hinge type air preheating sealing device
  • Hinge type air preheating sealing device
  • Hinge type air preheating sealing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] like figure 1 , figure 2 , is a cold end sealing device, the length of the end of the fixing plate 5 close to the contact baffle 2 exceeds the contact baffle 2, and is bent toward the contact baffle 2.

Embodiment 2

[0040] like image 3 , Figure 4 , is the hot end sealing device, the length of the end of the contact baffle 2 close to the fixed plate 5 exceeds the fixed plate 5, and bends toward the fixed plate 5.

[0041] The upper part of the support part is designed to bend out to prevent the reverse rotation of the upper baffle and at the same time play a sealing role. The design angle of the upper baffle is 15-20 degrees. The upper part of the baffle is in contact with the fan-shaped plate of the air preheater, so a composite ceramic material wear-resistant plate is installed on the top, and weathering steel is used as a whole. The baffle and the bracket are partially perforated and connected by a hinge device.

[0042] Picture of hinge and spring Figure 5-8 shown.

[0043] In the spring hinge device, the length of the spring 2 should be controlled to a reasonable length otherwise it cannot be installed, and the lower half plate 5 sleeve positions of the hinge have a gap 4 to fac...

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Abstract

The invention discloses a hinge type air preheating sealing device which is characterized by comprising a contact barrier (2), a hinge connecting device (3), a spring (4) and a fixing plate (5). The contact barrier (2) is connected with the fixing plate (5) by the hinge connecting device (3), and the spring (4) is additionally arranged in the hinge connecting device (3), so that an elastic hinge device can be formed. The hinge type air preheating sealing device has the advantages that abrasion-resistant plates made of composite ceramic materials are arranged at contact positions of the hinge type air preheating sealing device and sector plates, so that the service life of the sealing device can be greatly prolonged; or the abrasion-resistant plates made of the composite ceramic materials can be replaced after being abraded to a certain extent, so that the service life of the hinge type air preheating sealing device can be prolonged.

Description

technical field [0001] The invention relates to a contact-type sealing device, which is mainly used in rotary air preheaters for boilers used in large-scale enterprises such as thermal power plants, petroleum and petrochemical industries, in particular to a hinge-type air preheating sealing device. technical background [0002] With the increase of the single unit capacity of domestic thermal power generating units, the previous air preheaters have been unable to meet the needs of development. The rotary air preheater is widely used in large-capacity boilers because of its compact structure and small footprint. In addition to saving metal consumption, it also simplifies the arrangement of the heating surface at the rear of the boiler. [0003] The air leakage of the rotary air preheater mainly includes carrying air leakage and sealing air leakage. Since there is a certain gap between the rotating part and the stationary part, part of the air will inevitably be brought into ...

Claims

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Application Information

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IPC IPC(8): F23L15/00F16J15/16
CPCY02E20/34
Inventor 周惠
Owner 周惠
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