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Vertical plate gravity sealer used for air pre-heater of thermal power station

A technology of air preheater and sealer, which is applied in engine sealing, lighting and heating equipment, combustion methods, etc. It can solve the problems of reducing boiler thermal efficiency, reed wire corrosion and thinning, scaling, etc., and achieves good dynamic response characteristics , small frictional resistance and low power consumption

Inactive Publication Date: 2016-08-24
吴天顺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The moving and static parts attached by spring force are often thinned, scaled and broken due to the corrosion of the spring wire, resulting in gas blow-by on both sides of the preheater and reducing the thermal efficiency of the boiler

Method used

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  • Vertical plate gravity sealer used for air pre-heater of thermal power station

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Experimental program
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Embodiment Construction

[0010] The cross section of connecting seat 4 is factory font. "Factory character one horizontal" is a plane with two slotted holes 5. Through these two holes, bolts are used to connect with the rotor of the air preheater; there are two bosses 6 on the front side of the sealing plate 1, and two bosses on the back, which limit The upper swing limit position of sealing plate 1. "Factory" is a convex arc surface, which coincides with the concave arc part of the sealing plate 1.

[0011] The main body of the shaft seat 2 is cylindrical, and the inner circular surface cooperates with the pendulum shaft 3. There is a flat part in the tangential direction of the cylinder with two holes, and the small round table on the back side of the sealing plate 1 is embedded.

[0012] The balance shaft 3 is a three-stage stepped shaft. The thin shaft head is inserted into the shaft holes at the two ends of the seat 4. The thick shaft head cooperates with the shaft hole of the shaft seat 2, an...

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Abstract

A vertical plate gravity sealer used for an air pre-heater of a thermal power station belongs to the field of thermal power generation technology. The vertical plate gravity sealer used for the air pre-heater of the thermal power station is composed of a sealing plate (1), two shaft seats (2), two swinging shafts (3) and a connecting seat (4). Shaft holes are formed in the two longitudinal ends of the connecting seat (4) and the swinging shafts (3) are mounted in the shaft holes. The swinging shafts (3) penetrate outwards the shaft seats (2). Two holes are formed in each shaft seat (2) and each shaft seat (2) is connected with the sealing plate (1) through the two holes. A lubricant cavity is located between each swinging shaft (3) and each shaft seat (2). The lubricant cavities are filled with heat resistance lubricant. The connecting seat (4) is mounted on a rotor of the air pre-heater. The sealing plate (1) droops by self-weight and attaches to a sector plate of the air pre-heater to form attached sealing. The sealer is good in sealing stability and sealing durability, flexible to swing, small in friction resistance, low in power loss, simple in structure, convenient for installation and maintenance.

Description

technical field [0001] Thermal power generation. Background technique [0002] The air preheater of the thermal power station, referred to as "air preheater" in the industry, is a kind of very high temperature flue gas discharged from fuel combustion, which preheats the air participating in the combustion, so as to improve the thermal efficiency of the boiler. In the current rotary air preheater, the seal pair separating the flue gas side from the air side belongs to the motion seal of the attachment surface of the dynamic and static parts. The sealing gap on the attachment surface of the moving and static parts determines the sealing effect. In order to improve the thermal efficiency of air preheating, the attachment of the moving parts to the static parts must be improved. The moving and static parts attached by the spring force are often thinned, scaled and broken due to the corrosion of the spring wire, resulting in gas blowing on both sides of the hot and cold sides o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/3284F16J15/324F23L15/00
CPCF16J15/324F16J15/3284F23L15/00Y02E20/34
Inventor 吴天顺
Owner 吴天顺
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