Heat exchange device for increasing inlet air temperature of boiler by utilizing continuously-discharged or lyophobic waste heat energy
A technology of inlet air temperature and heat exchange device, which is applied in the direction of heat exchange equipment, heat exchanger type, heat exchanger shell, etc., can solve the problems of heat waste, boiler inlet air temperature needs to be preheated, etc., and achieve the utilization rate of waste heat. High, high strength, avoid vibration effect
Active Publication Date: 2018-07-10
ZHEJIANG WANGNENG ENVIRONMENTAL PROTECTION CO LTD
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problem that waste heat is wasted in the continuous row or drainage of the power plant, and the boiler inlet air temperature needs to be preheated. Functionally designed heat exchange device that utilizes continuous row or drain waste heat energy to increase boiler inlet air temperature
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[0024] The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.
[0025] see figure 1 , the present embodiment is a heat exchange device that utilizes continuous row or hydrophobic waste heat energy to increase the boiler inlet air temperature, and is installed in the straight pipe part of the cold air section outside the expansion joint in the direction of the outlet air pipe of the fan 1.
[0026] The cross-section of the cold wind section air duct 3 is a rectangle, and the outside of the cold wind section air duct 3 is provided with the same water tank 2 with a rectangular structure in cross section, and the distance between the four inner surfaces of the cold wind section air duct and the four inner surfaces of the water tank is 50mm. Water tank 2 is provided with hot water inlet pipe 4 toward the bottom of fan 1 one end, and water tank 2 is provided with outlet...
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The invention discloses a heat exchange device for increasing the inlet air temperature of a boiler by utilizing continuously-discharged or lyophobic waste heat energy. The heat exchange device comprises a cold air section air channel and is characterized in that a water passing tank is arranged outside the cold air section air channel; the bottom, toward one end of a fan, of the water passing tank is provided with a water charging pipe; the upper part, toward an output end of the air channel, of the water passing tank is provided with a water discharging pipe; and a connecting carrier is arranged between the outer wall of the cold air section air channel and an inner chamber of the water passing tank. According to the heat exchange device disclosed by the invention, inlet air at all straight pipe positions of the cold air section air channel where a fan outputs cold air is preheated with relatively low cost; the heat exchange area is large and the overall waste heat utilization rate is high; by the design of the connecting carrier, the overall heat exchange structure is large in strength, the movement direction of an optimal heat exchange channel can be obtained as well, meanwhilethe shake of a conveying air pipe is prevented, and full noise reduction is also realized.
Description
technical field [0001] The invention relates to the boiler technology of a power plant, in particular to a heat exchange device for increasing the temperature of the boiler inlet air by utilizing waste heat energy of continuous row or drainage. Background technique [0002] Generally, in order to improve the cycle efficiency in the system design of power plants, drain tanks are installed on the zero-meter floor, mainly to collect various drains from boilers and turbines, especially when there are a large number of drains for a long time when the boiler is turned on or off. , this part of the water has a relatively large amount of heat. When the water tank reaches a certain height, use the water pump to pump it to the deaerator, so as to achieve the purpose of recycling. However, during the storage of the drain tank or when the water level of the drain tank does not reach the working height, the heat of the drain tank will be dissipated in large quantities. In addition, each...
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IPC IPC(8): F28D7/10F28F9/00
CPCF28D7/106F28F9/00
Inventor 陈国强
Owner ZHEJIANG WANGNENG ENVIRONMENTAL PROTECTION CO LTD