Off-line cleaning device for air pre-heater and working method of off-line cleaning device
A technology of cleaning device and air preheater, which is applied in the direction of cleaning heat transfer device, drying gas arrangement, dryer, etc., to achieve the effect of convenient use, quality assurance and improved cleaning rate
Pending Publication Date: 2019-10-22
HUADIAN ELECTRIC POWER SCI INST CO LTD
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and provide an off-line cleaning device for an air preheater, which has the advantages of good cleaning effect and solves the problem of defects in the existing air preheater cleaning device
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[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.
[0019] see Figure 1-5 , the off-line cleaning device for the air preheater in this embodiment includes a base plate 1 and a cleaning tank 2, the top of the base plate 1 is fixedly connected with a fixed column 3, and the top of the fixed column 3 is movably connected with a fixed block 4 through a bearing, and the fixed block 4 The surface is fixedly connected with a support rod 5, the end of the support rod 5 is fixedly connected with an annular casing 6, the bottom of the annular casing 6 is fixedly connected with a motor 7, and the power output shaft of the motor 7 is fixedly connected with a winding roller 8, and the winding roller 8 A steel wire rope 9 is wound on the surface of the steel wire rope 9, and the ...
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The invention discloses an off-line cleaning device for an air pre-heater and a working method of the off-line cleaning device. The off-line cleaning device comprises a bottom plate and a cleaning tank; a fixing column is fixedly connected to the top of the bottom plate; a fixing block is movably connected to the top end of the fixing column through a bearing; a supporting rod is fixedly connectedto the surface of the fixing block; annular shells are fixedly connected with the end parts of the supporting rod; motors are fixedly connected to the bottoms of the annular shells; and winding rollsare fixedly connected with a power output shafts of the motors. According to the off-line cleaning device for the air pre-heater, the motors drive the winding rolls to rotate to lift up heat exchangeelements, the heat exchange elements are transported to a part above the cleaning tank by the annular shells, alkaline material water is sprayed out by using a first spray nozzle, then the heat exchange elements are brushed by a brush, and the heat exchange elements are flushed with clear water by using a second spray nozzle, and is blow-dried with hot air by using an air blower after being flushed, so that ammonium bisulfate scale on the heat exchange elements can be cleared up, and the clearing efficiency is improved.
Description
technical field [0001] The invention relates to the technical field of mechanical equipment, in particular to an off-line cleaning device for an air preheater. Background technique [0002] After the existing boiler denitrification equipment is put into operation, NH is generated due to problems such as ammonia escape. 4 HSO 4 The problem of serious blockage of the air preheater was caused. In the case of the unit load of 660MW, the flue gas side difference was about 1600Pa, but after 8 months of operation, the flue gas side differential pressure of the air preheater increased to 4500Pa, and the differential pressure increased rapidly. , the rapid increase of the differential pressure of the air preheater caused excessive negative pressure inside the air and smoke system, which seriously affected the safe and stable operation of the boiler equipment. low, resulting in no energy saving and an increase in exhaust gas temperature. In severe cases, it will affect the load capa...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F28G13/00F28G15/00F26B21/00
CPCF28G13/00F28G15/00F26B21/001F26B21/004Y02E20/34
Inventor 薛方明陈锋孙漪清刘秀如苏靖程
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD