Smoke damper door

A baffle door and flue gas technology, which is used in exhaust gas devices, combustion product treatment, combustion methods, etc., can solve problems such as operation errors, unit trip failures, and large flue gas flow resistance, reducing leakage and The effect of good strength and reduced floor space

Active Publication Date: 2008-07-16
HANGZHOU BOILER GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (2) There are obstacles such as rotating shafts and baffles in the flue gas flow channel, and the resistance to flue gas flow is large;
[0005] (3) It is easy to cause operation errors, so that both channels can be closed, causing the unit to trip and fail

Method used

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Examples

Experimental program
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Embodiment

[0027] For the baffle door shown in Figure 1, the baffle 1 adopts a single-axis single-blade structure, that is, the rotating shaft 11 is located on the top of the baffle 1, and the baffle can rotate around the axis 0-90° in the flue. When the baffle plate 1 closes the side channel of the chimney A upwards, the flue gas C is introduced into the waste heat boiler; when the baffle 1 closes the side channel of the boiler B downward, the flue gas C is introduced into the bypass chimney; but it is not possible to close both at the same time exit, causing the gas turbine to trip.

[0028] The baffle plate 1 shown in Figure 2 is surrounded by a metal frame structure 12, with a metal reinforcing rib 14 in the middle, and a cladding layer 13 of a refractory fiber material on both sides. The refractory fiber material can be ceramic fiber or glass fiber. This embodiment uses Ceramic fiber, elastic sheet metal 15 is arranged around frame 12.

[0029] As for the sealing structure of the b...

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PUM

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Abstract

The invention relates to an off-gas baffle door which comprises three flues and baffle doors arranged in the flues. The invention is characterized in that the baffle door has a single-piece single-shaft structure; a door shaft is positioned at the top of the baffle door and is arranged horizontally, and the baffle door can turn around the shaft in an angle between 0 and 90 degrees; double-layer elastic metal sheets which preserve a gap between layers and interlaced positioning of layers are respectively adopted around the two side faces of the baffle door; double-layer sealing boards corresponding to the elastic metal sheet are respectively arranged around the flue of a matching face of the baffle door, and the elastic metal sheet is matched with the sealing board to form a sealing face; a sealed cavity is formed in the middle of the sealing face. The baffle door adopts a hydraulic driving system comprising a hydraulic oil cylinder which is arranged at the two ends of the door shaft in a mode of double-side arrangement; an emergence closing loop is arranged in the system and an energy storing device is arranged in the loop. The fume flow passage of the invention has no obstacle with low flow resistance, the sealing rate can reach 100 percent and the driving of the hydraulic oil cylinder is stable with reliable capability.

Description

technical field [0001] The invention relates to a waste heat utilization flue gas bypass system. Background technique [0002] The core component of the waste heat utilization flue gas bypass system is the three-way flue gas baffle door, which can lead the flue gas into the waste heat boiler or the bypass chimney, that is, the side baffle of the boiler is closed, and the flue gas is led into the bypass chimney; Or the side baffle of the chimney is closed, and the flue gas is introduced into the waste heat boiler, but at least one of the two outlets must be connected. The flue gas baffle door in the prior art adopts the shutter form, and is provided with more than two blades, and one set is installed on the boiler side and the chimney side respectively; they are operated independently of each other and interlocked with an electrical program, that is, when one channel is closed, the other is closed. A channel must be open. The seal between the blades or between the blades an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J13/08
Inventor 金伟春应群伟沈世江
Owner HANGZHOU BOILER GRP CO LTD
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