Novel mechanical sealing structure for water seal on bottom of boiler

Abstract

The invention provides a novel boiler bottom upper water seal mechanical sealing structure which comprises a water cooling wall, a slag check curtain is arranged on the lower portion of the water cooling wall, a mechanical sealing mechanism is arranged on one side of the slag check curtain, a water seal tank transformation base is arranged on the bottom face of the mechanical sealing mechanism, and a buffer layer is arranged on one side of the water seal tank transformation base. According to the boiler bottom upper water seal mechanical sealing device, a novel boiler bottom upper water seal mechanical sealing technology is adopted, an originally-designed sealing water system is omitted, and a large number of fresh water resources are saved; meanwhile, the problems of boiler bottom sealing, boiler efficiency reduction and equipment pollution caused by ash water leakage due to deformation of inner and outer protection plates are solved; and the stubborn problem that the longitudinal expansion of the water cooling wall of the boiler body is limited is thoroughly solved.

Description

technical field [0001] The invention relates to the technical field of large boiler equipment, in particular to a novel boiler bottom water seal mechanical seal structure. Background technique [0002] The slag removal system of the traditional thermal power plant adopts a wet slag removal machine. A slag well is arranged above the slag removal machine. The seal between the slag well and the bottom of the boiler is sealed by a water seal insert. As the ash deposits in the water seal tank continue to accumulate, its height gradually increases. According to the measurement, the average ash deposit depth reaches 400mm-500mm, which causes the inner and outer baffles of the water seal tank to be squeezed, deformed and tilted, causing the water seal tank to leak. In turn, it will affect the bottom seal and reduce the efficiency of the boiler. What's more serious is that the continuous accumulation of ash in the water seal tank directly affects the longitudinal expansion of the wa...

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Problems solved by technology

[0003] In view of the above problems, the present invention provides a new type of water seal mechanical seal structure on the bottom of the boiler, the purpose of which is to solve the problem that the inner and outer baffles of the water seal tank are squeezed, deformed and tilted due to the ash accumulation in the water seal tank proposed in the above background technology. , and even affect the technical problems of the longitudinal expansion of the water wall of the boiler body

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