Defrost method and defrost device applied to outdoor suction port of fan in severe cold area

An air suction port and fan room technology, which is applied in the field of defrosting devices, can solve the problem of frost on the fan port, and achieve the effects of shortening the defrosting cycle, good defrosting effect, and effective intelligent defrosting.

Active Publication Date: 2021-06-04
四川电力设计咨询有限责任公司
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AI Technical Summary

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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  • Defrost method and defrost device applied to outdoor suction port of fan in severe cold area
  • Defrost method and defrost device applied to outdoor suction port of fan in severe 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 applied to an outdoor air suction port of a fan in a severe cold area, comprising: detecting the actual temperature T1 of the air suction port; when the actual temperature T1 is less than or equal to a preset temperature T, detecting the air suction resistance of the air duct of the fan And the air intake volume; when the detection value of the suction resistance increases continuously, and at the same time the detection value of the air intake volume decreases continuously, start timing, and continue to detect the suction resistance and air intake volume of the fan duct, and the duration of continuous detection is t; if the suction resistance If the detected value, the detected value of the air intake, or the change of the suction resistance and the air intake meet the defrosting requirement, the defrosting mechanism is controlled to perform a defrosting action. Also disclosed is a defrosting device, comprising a fan, a temperature detector, a wind suction resistance detector, an air intake detector, a defrosting mechanism, a timer and a controller. The invention realizes effective and intelligent defrosting, achieves a good defrosting effect, and ensures reliable operation of fans, boiler equipment and generator sets.

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 Patents(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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