Controllable multi-directional flow convection heat exchange flue that is resistant to dust deposition and condensation, high temperature resistance and load tracking

Abstract

The invention relates to boiler convection heat exchange flues, in particular to an ash deposition and moisture condensation preventing, high temperature resisting and load tracking controllable multidirectional flow convection heat exchange flue and aims at solving the technical problems of the defects that in the prior art, when a boiler runs at the high temperature, the bearing capability of a blind window blade fixing frame and a shaft where each blade set is located is reduced, and normal work at the high temperature cannot be achieved; and the mechanical performance of a transmission device is reduced under the high-temperature environment, and when the tonnage of the boiler is large, the transmission device cannot be guided into the flue, and consequently driving is not facilitated. According to the adopted technical scheme, the ash deposition and moisture condensation preventing, high temperature resisting and load tracking controllable multidirectional flow convection heat exchange flue is provided, the blind window blade fixing frame is a fixing frame capable of being cooled through gas or liquid cooling media, a hollow square steel supporting cross beam in the middle serves as a guiding-in heat protection beam of the transmission device, and the shaft where each blade set of a blind window is located is a hollow square or round shaft capable of being cooled through gas or liquid cooling media.

Description

technical field [0001] The invention relates to a boiler convection heat exchange flue, in particular to a controllable multi-directional flow convection heat exchange flue which is resistant to dust accumulation, condensation, high temperature and load tracking. Background technique [0002] Chinese utility model patent ZL201320480984.9 provides a controllable multi-directional flow convective heat exchange flue that resists dust accumulation and condensation and follows the load. On the basis of the channel, there are 90-degree adjustable louvers between the adjacent convective heating surface groups and at the flue gas inlet and outlet of the convective heat exchange flue. The louvers on each layer are composed of blade groups. The blade fixing frame of the louver is fixed with the inner or outer wall of the smoke wall. When the tonnage of the boiler is large, the shutter is supported by the inner beam of the smoke wall added to the blade fixing frame of the louver. Each ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the existing controllable multi-directional flow convective heat exchange flue that resists dust accumulation and dew condensation and follows the load exists. The bearing capacity of the shaft is reduced, and it cannot work normally at high temperature, which affects the normal operation of the flue; because the mechanical performance of the transmission device is reduced in a high temperature environment, the transmission device cannot be introduced into the flue gas when the boiler tonnage is large. In the channel, it is connected with the shaft where each set of blades is located to facilitate driving

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