Defrosting method and device applicable to outdoor air absorbing port of air blower in cold area

An air suction port and fan room technology, which is applied in the field of defrosting devices, can solve the problems such as frost on the fan port, and achieve the effect of shortening the defrosting cycle, good defrosting effect, and avoiding false defrosting.

Active Publication Date: 2019-10-01
四川电力设计咨询有限责任公司
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a defrosting method and defrosting device applied to the outdoor air suction port of the fan in severe cold areas, so as to solve the problem of frosting on the fan port of the wind system of the thermal power plant

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  • Defrosting method and device applicable to outdoor air absorbing port of air blower in cold area
  • Defrosting method and device applicable to outdoor air absorbing port of air blower in cold area

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] The defrosting method of the present invention applied to the outdoor suction port of fan in severe cold area, such as figure 1 shown, including the following steps:

[0022] A. Detect the actual temperature T1 of the pipe wall of the fan suction port. After the fan is started each time, it can start to detect the actual temperature T1 of the pipe wall of the suction port. The detection of the actual temperature T1 uses a temperature detector 1, which may be various existing temperature sensors. The temperature detector 1 is installed in the air duct of the fan, about 200mm away from the air suction port. When the temperature of the external environment is high and obviously higher than the frosting temperature, there is basically no frosting phenomenon, and the temperature detector 1 can be turned off to save energy consumption; when the exter...

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Abstract

The invention discloses a defrosting method applicable to an outdoor air absorbing port of an air blower in a cold area. The method comprises the following steps: detecting actual temperature T of theair absorbing port; detecting the air absorbing resistance and the air inlet volume of an air channel of the air blower in case that the actual temperature T1 is not beyond preset temperature T; if the detected air absorbing resistance value continuously increases, starting to time when the detected air inlet value continuously decreases; continuously detecting the air absorbing resistance and the air inlet volume of the air channel of the air blower, wherein the continuous detecting lasting time is t; if the detected air absorbing resistance value, the detected air inlet volume resistance orthe variation of the air absorbing resistance and the air inlet volume meets the defrosting requirement, controlling a defrosting mechanism to perform the defrosting action again. With the adoption of the method and the device, defrosting can be effectively intelligently carried out, and good defrosting effect is achieved; and the air blower, boiler equipment and a generation set can reliably run.

Description

technical field [0001] The invention relates to the technical field of defrosting, in particular to a defrosting method and a defrosting device applied to an outdoor air suction port of a fan in severe cold regions. Background technique [0002] The wind system of a thermal power plant is mainly used to transport and dry the fuel required for boiler combustion, supply a large amount of air required for fuel combustion, and overcome the air required for fuel combustion in air preheaters, pulverized coal equipment, combustion equipment and wind. System resistance in equipment such as roads. Therefore, the focus of wind system design is to select fans with appropriate capacity, optimize the flow field at the inlet and outlet of fans, reduce unfavorable conditions for fan operation and performance efficiency, maintain reasonable medium flow and velocity, and adopt reasonable smoke duct layout to Reduce system resistance. However, in severe cold areas (such as Xinjiang), due to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D21/00F25D21/06
CPCF25D21/004F25D21/065
Inventor 廖加雪刘淑颖贾荣李华王小朋彭诗文帅志昂
Owner 四川电力设计咨询有限责任公司
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