Anti-corrosion flue hot-state online penetrating type small-bore leakage point leakage-repairing device and construction method

Abstract

The invention relates to an anti-corrosion flue hot-state online penetrating type small-bore leakage point leakage-repairing device which comprises an inner sealing plate, an inner sealing rubber sheet, a flue inner side breakage corrosion-resistant layer, a flue wall with leakage points, an outer sealing rubber sheet, an outer sealing plate and fastening bolts. The flue inner side breakage corrosion-resistant layer is located on the inner side of the flue wall with the leakage points, the inner sealing rubber sheet with holes is arranged on the inner side of the flue inner side breakage corrosion-resistant layer, and the inner sealing plate is arranged on the inner side of the inner sealing rubber sheet. The outer sealing rubber sheet with holes is arranged on the outer side of the flue wall with the leakage points, the outer sealing plate with threaded holes is arranged on the outer side of the outer sealing rubber sheet, and the inner sealing plate, the inner sealing rubber sheet, the outer sealing rubber sheet and the outer sealing plate are fixed by the fastening bolts. The anti-corrosion flue hot-state online penetrating type small-bore leakage point leakage-repairing devicehas the beneficial effects that the device can be mounted and constructed in a hot state, and normal operation of a flue gas system is not affected; and the device is customized on site and high in freedom degree, is obvious in leakage blocking effect after being mounted, and is easy to mount, convenient to manufacture and low in cost.

Description

technical field [0001] The invention relates to a leak repairing device, in particular to a small-diameter leak repairing device for anti-corrosion flue hot state online penetration. Background technique [0002] At present, after the burning of fossil fuels in the operation of thermal power generating units, a variety of highly corrosive acid gases are produced. To the flue area where the inner wall temperature is lower than the water vapor dew point, the acid gas in the flue gas combines with the moisture in the flue gas to form a very corrosive acid solution. In the flue, due to the unqualified initial anti-corrosion construction quality and other reasons, the anti-corrosion layer area was damaged, and the flue gas and acid leaked after the flue was corroded. When the unit is in normal operation, the inside of the anti-corrosion flue does not have the conditions for repairing leaks. Therefore, at the initial stage of flue erosion, a safe and reliable online temporary lea...

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Problems solved by technology

In the flue, due to the unqualified initial anti-corrosion construction quality and other reasons, the anti-corrosion layer area was damaged, and the flue gas and acid leaked after the flue was corroded.

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