Open type metal hermatic door

Abstract

An open type seal door applies a concave and convex clutched door and doorframe seal structure, concave spring plates made of thin steel boards are designed at the edge of the doorframe, convex seal blocks set at the corresponding places at the door edge and a fireproof coating is coated inside of the door, when the door is closed, a convex seal block and concave seal spring plate are clutched tightly so realizing the seal with simple structure, convenient close and opan and elimianting gap between the door and doorframe effectively, reducing loss of heat energy of boiler smoke exhaust to increase boiler thermal efficiency.

Description

Technical field: [0001] The invention relates to an openable metal airtight door, which is a metal airtight door arranged on a boiler body or its flue gas duct, and belongs to the field of boiler thermal energy engineering. Background technique: [0002] In order to meet the needs of safe and normal operation of the boiler, people often set various open metal door holes on the boiler body and its flue gas duct, such as fire viewing holes, observation holes, manholes, coke holes, etc., to facilitate the operation and operation of the boiler. control and maintenance. When the existing boiler door hole is closed, only by the non-close plane contact between the periphery of the door and the door frame, there are gaps and lack of good sealing, resulting in increased boiler smoke loss. Since the air (smoke) pressure difference between the inside and outside of the boiler furnace wall is tens to hundreds of Pa, and the air (smoke) pressure difference between the inside and outside...

AI Technical Summary

Problems solved by technology

When the existing boiler door hole is closed, it only depends on the non-close plane contact between the door periphery and the door frame, there is a gap, and the lack of good sealing results in an increase in boiler exhaust loss

Since the air (smoke) pressure difference between the inside and outside of the boiler furnace wall is tens to hundreds of Pa, and the air (smoke) pressure difference between the inside and outside of the flue duct wall is tens to several thousand Pa, therefore, the boiler body and its smoke A non-sealed open metal door is set on the air duct, and the gap between the door and the door frame plane will inevitably become a source of air leakage, which will increase the heat loss in the boiler, not only waste precious natural resources, but also seriously reduce the thermal efficiency of the boiler

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