CN110345806B - Off-line cleaning device for miniaturized air preheater and working method thereof - Google Patents
Off-line cleaning device for miniaturized air preheater and working method thereof Download PDFInfo
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- CN110345806B CN110345806B CN201910515566.0A CN201910515566A CN110345806B CN 110345806 B CN110345806 B CN 110345806B CN 201910515566 A CN201910515566 A CN 201910515566A CN 110345806 B CN110345806 B CN 110345806B
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- cleaning
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- 238000004140 cleaning Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005406 washing Methods 0.000 claims abstract description 157
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 118
- 239000007921 spray Substances 0.000 claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 239000003513 alkali Substances 0.000 claims abstract description 26
- 238000000861 blow drying Methods 0.000 claims abstract description 24
- 239000010865 sewage Substances 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims description 31
- 239000002918 waste heat Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 239000010881 fly ash Substances 0.000 abstract description 4
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 208000014674 injury Diseases 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010908 plant waste Substances 0.000 description 2
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses an off-line cleaning device of a miniaturized air preheater and a working method thereof, wherein the off-line cleaning device comprises a rotary air preheater, a heat exchange element, a gripper, a lifting rope, a rotating wheel, an electric telescopic rod, a motor, a rotating shaft, a supporting rod, a fixed plate, a control switch, a circulating alkali liquid pool, an inclined plate, a sewage draining outlet, a miniature water pump, a circulating water pool, a hot air pipe, a hot air nozzle, a water washing spray head, a cover plate, a water washing blow-drying compartment, a PH value detector, an alkali washing compartment, a net piece and an alkali washing spray head. The device belongs to off-line cleaning, and the problem that the operation of a machine can cause personal injury to cleaning staff during on-line cleaning is avoided, the heat exchange element to be cleaned is taken out through the gripper, the labor intensity of the cleaning staff is reduced, the alkaline cleaning compartment is used for cleaning the element for the first time, the water cleaning blow-drying compartment is used for cleaning the element for the second time, the cleaning effect is ensured, a sewage outlet is formed in the bottom end of the circulating water tank, and the cleaning staff can clean insoluble fly ash conveniently.
Description
Technical Field
The invention relates to the field of cleaning of air pre-heaters, in particular to an off-line cleaning device of a miniaturized air pre-heater.
Background
In the daily operation process of the rotary air preheater, the differential pressure of the air preheater is increased due to the scaling blockage of ammonium bisulfate, so that the air preheater is required to be cleaned and dredged, and the air preheater cleaning device is special equipment for cleaning and dredging the air preheater. When the traditional portable online cleaning equipment is used, a fixed support rail is required to be installed in the air preheater, an access door is newly added to the air preheater shell, and a cleaning spray gun assembly is installed on a fixed support rail of the access door during cleaning, and cleaning is completed through PLC in-situ control. And after each cleaning, the cleaning assembly is withdrawn to the entrance door for dismantling, and the entrance door is closed to complete the whole cleaning process, such as the Chinese patent with the application number of 201820377303.9. However, some equipment cleaning devices have complex structures and large body sizes, and are not beneficial to quick assembly and disassembly in a cleaning site.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a miniaturized air preheater off-line cleaning device so as to solve the problems set forth in the background art.
The invention solves the problems by adopting the following technical scheme: an off-line cleaning device of a miniaturized air preheater comprises a rotary air preheater, a heat exchange element, a gripper, a lifting rope, a rotating wheel, an electric telescopic rod, a motor, a rotating shaft, a supporting rod, a fixed plate, a control switch, a circulating alkali liquid pool, an inclined plate, a sewage outlet, a miniature water pump, a circulating water pool, a hot air pipe, a hot air spray head, a water washing spray head, a cover plate, a water washing blow-drying compartment, a PH value detector, an alkali washing compartment, a net sheet and an alkali washing spray head; the method is characterized in that: the heat exchange element is arranged in the rotary air preheater, one side of the alkaline washing compartment is provided with the washing drying compartment, the top ends of the alkaline washing compartment and the washing drying compartment are respectively provided with the cover plate, the inner middle sections of the alkaline washing compartment and the washing drying compartment are respectively provided with the mesh, PH value detectors are respectively arranged in the alkaline washing compartment and the washing drying compartment, the upper end and the lower end of the inner surface of one side of the alkaline washing compartment are respectively provided with the alkaline washing spray head, the bottom end of the alkaline washing compartment is provided with the circulating alkaline liquid pool, one side of the inner part of the circulating alkaline liquid pool is provided with the miniature water pump, the lower part of the miniature water pump is provided with the inclined plate, one end of the inclined plate is provided with the drain outlet, the other side of the alkaline washing compartment is provided with the control switch, the upper part of the control switch is provided with the fixed plate, the top end of the fixed plate is provided with the support rod, the motor is fixedly connected with the top end of the support rod through the rotating shaft, one side of the motor is provided with the circulating alkaline liquid pool, the rotating shaft is provided with the telescopic rope, and the lifting rope is provided with the rotating shaft; the washing shower is characterized in that the upper end and the lower end of the two sides of the inside of the washing blow-drying compartment are provided with the washing shower head, the bottom end of one side of the inside of the washing blow-drying compartment is provided with the hot air nozzle, one end of the hot air nozzle is provided with the hot air pipe, the bottom end of the washing blow-drying compartment is provided with the circulating water tank, one side of the inside of the circulating water tank is provided with the miniature water pump, the lower part of the miniature water pump is provided with the sloping plate, and one end of the sloping plate is provided with the drain.
Preferably, the fixing plate is fixedly connected with the alkaline washing compartment through a bolt, the supporting rod is fixedly connected with the fixing plate through a bolt, and the rotating wheel is fixedly connected with the electric telescopic rod through a bolt.
Preferably, the washing and drying compartment is fixedly connected with the alkaline washing compartment through bolts, and the circulating alkali liquid pool and the circulating water pool are respectively and fixedly connected with the alkaline washing compartment and the washing and drying compartment through bolts.
Preferably, the alkaline washing spray header is fixed on the alkaline washing compartment through bolts and is connected with the miniature water pump in the circulating alkaline liquid pool through a water pipe, the net piece is fixed on the water washing blow-drying compartment and the alkaline washing compartment through bolts, detachable cover plates are arranged on the top ends of the water washing blow-drying compartment and the alkaline washing compartment, and the PH value detector is fixed on the cover plates through a fixed seat and stretches into the water washing blow-drying compartment and the alkaline washing compartment.
Preferably, the water washing spray header is fixed on the water washing blow-drying compartment through bolts and is connected with the miniature water pump in the circulating water tank through a water pipe, and the hot air spray head is fixed on the water washing blow-drying compartment through bolts.
Preferably, an exhaust fan is arranged at one end of the hot air pipe.
Preferably, the control switch is fixedly connected with the alkaline washing compartment through a bolt, and the control switch is electrically connected with the electric telescopic rod, the motor, the miniature water pump and the exhaust fan.
The working method is as follows: the motor drives the rotating shaft to rotate, the electric telescopic rod fixed on the rotating shaft also rotates, the heat exchange element on the grab is sent to the net sheet in the alkaline washing compartment for the first time to be washed, the miniature water pump in the circulating alkaline liquid pool conveys alkaline liquid to the alkaline washing spray header through the water pipe to be sprayed out, the uninterrupted washing process is realized, the washing degree is judged by observing the PH value on the PH value detector, so that the washing time is controlled, when the PH value in the alkaline washing compartment reaches the specified requirement, the heat exchange element is moved to the net sheet in the washing drying compartment, the miniature water pump in the circulating water pool conveys water to the water washing spray header to be sprayed out, the heat exchange element is washed again, the washing degree is judged by observing the PH value on the PH value detector, so that the washing time is controlled, after the washing is finished, the waste heat of power plant waste gas is conveyed to the water washing compartment through the hot air pipe by the exhaust fan, the heat exchange element is dried by the hot air spray header, and insoluble fly ash on the heat exchange element is discharged through the drain.
Compared with the prior art, the invention has the following advantages and effects: the device belongs to off-line cleaning, the problem that the operation of machine can cause personal injury to cleaning personnel when having avoided online cleaning, take out the heat transfer component that waits to wash through the tongs, reduce cleaning personnel's intensity of labour, alkaline wash compartment carries out first cleaning to the component, it washs the component by the washing weather compartment for the second time again, the abluent effect has been guaranteed, be provided with the drain in the circulation tank bottom, make things convenient for the cleaning personnel to clear up insoluble fly ash, the air exhauster is with the waste heat of power plant through the hot-blast main conveying to the washing weather compartment in carry out drying treatment to the component, both solved the water stain problem after the component washs, simultaneously still waste utilization, manufacturing cost is reduced, and work efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the present invention.
In the figure: 1. the rotary air preheater comprises 2 parts of heat exchange elements, 3 parts of grippers, 4 parts of lifting ropes, 5 parts of rotating wheels, 6 parts of electric telescopic rods, 7 parts of motors, 8 parts of rotating shafts, 9 parts of supporting rods, 10 parts of fixing plates, 11 parts of control switches, 12 parts of circulating alkali liquid pools, 13 parts of inclined plates, 14 parts of sewage outlets, 15 parts of miniature water pumps, 16 parts of circulating water pools, 17 parts of hot air pipes, 18 parts of hot air spray heads, 19 parts of water washing spray heads, 20 parts of cover plates, 21 parts of water washing blow-drying compartments, 22 parts of PH value detectors, 23 parts of alkali washing compartments, 24 parts of net pieces, 25 parts of alkali washing spray heads.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and not limited to the following examples.
Examples
Referring to fig. 1, the off-line cleaning device for a miniaturized air preheater in this embodiment includes a rotary air preheater 1, a heat exchange element 2, a gripper 3, a lifting rope 4, a rotating wheel 5, an electric telescopic rod 6, a motor 7, a rotating shaft 8, a supporting rod 9, a fixed plate 10, a control switch 11, a circulating alkali liquid pool 12, a sloping plate 13, a sewage drain 14, a micro water pump 15, a circulating water pool 16, a hot air pipe 17, a hot air spray head 18, a water washing spray head 19, a cover plate 20, a water washing and drying compartment 21, a PH value detector 22, an alkali washing compartment 23, a mesh 24 and an alkali washing spray head 25.
The heat exchange element 2 is arranged in the rotary air preheater 1, one side of the alkaline washing compartment 23 is provided with a water washing and drying compartment 21, the top ends of the alkaline washing compartment 23 and the water washing and drying compartment 21 are respectively provided with a cover plate 20, the middle sections of the interiors of the alkaline washing compartment 23 and the water washing and drying compartment 21 are respectively provided with a mesh 24, the interiors of the alkaline washing compartment 23 and the water washing and drying compartment 21 are respectively provided with a PH value detector 22, the upper end and the lower end of the inner surface of one side of the alkaline washing compartment 23 are respectively provided with an alkaline washing spray head 25, the bottom end of the alkaline washing compartment 23 is provided with a circulating alkaline liquid pool 12, one side of the inside of the circulating alkaline liquid pool 12 is provided with a micro water pump 15, an inclined plate 13 is arranged below the micro water pump 15, one end of the inclined plate 13 is provided with a sewage drain 14, the other side of the alkaline washing compartment 23 is provided with a control switch 11, the upper side of the control switch 11 is provided with a fixed plate 10, the top end of the fixed plate 10 is provided with a support rod 9, the motor 7 is fixedly connected with the top end of the support rod 9 through a rotating shaft 8, one side of the motor 7 is provided with an electric telescopic rod 6, the electric telescopic rod 6 is fixedly connected with the rotating shaft 8, one end of the electric telescopic rod 6 is provided with a rotating wheel 5, and the lifting rope 4 is provided with a rotating wheel 3 is provided with a lifting rope 4; the upper and lower ends of the two sides of the inside of the washing and drying compartment 21 are provided with washing spray heads 19, the bottom end of one side of the inside of the washing and drying compartment 21 is provided with a hot air spray head 18, one end of the hot air spray head 18 is provided with a hot air pipe 17, the bottom end of the washing and drying compartment 21 is provided with a circulating water tank 16, one side of the inside of the circulating water tank 16 is provided with a miniature water pump 15, the lower part of the miniature water pump 15 is provided with a sloping plate 13, and one end of the sloping plate 13 is provided with a sewage outlet 14.
The fixed plate 10 is fixedly connected with the alkaline washing compartment 23 through the bolt, the supporting rod 9 is fixedly connected with the fixed plate 10 through the bolt, the rotating wheel 5 is fixedly connected with the electric telescopic rod 6 through the bolt, the grip 3 is connected with the rotating wheel 5 through the lifting rope 4, the motor 7 drives the rotating shaft 8 to rotate, so that the electric telescopic rod 6 fixed on the rotating shaft 8 can rotate along with the rotating shaft, the grip 3 is conveniently conveyed into the cleaning device to be cleaned after the element is gripped, manual operation is not needed, the labor intensity is reduced, and the labor cost is reduced.
The washing drying compartment 21 is fixedly connected with the alkali washing compartment 23 through bolts, the circulating alkali liquid pool 12 and the circulating water pool 16 are respectively and fixedly connected with the alkali washing compartment 23 and the washing drying compartment 21 through bolts, and the washing drying compartment 21, the alkali washing compartment 23, the circulating alkali liquid pool 12 and the circulating water pool 16 are connected into a whole through bolts, so that the stability of the whole device is ensured.
The alkaline washing spray head 25 is fixed on the alkaline washing compartment 23 through bolts and is connected with the miniature water pump 15 in the circulating alkaline liquid pool 12 through a water pipe, the net piece 24 is fixed on the water washing blow-drying compartment 21 and the alkaline washing compartment 23 through bolts, the detachable cover plate 20 is arranged at the top ends of the water washing blow-drying compartment 21 and the alkaline washing compartment 23, the PH value detector 22 is fixed on the cover plate 20 through the fixing seat and extends into the water washing blow-drying compartment 21 and the alkaline washing compartment 23, the liquid sprayed out through the flushing spray head can carry out uninterrupted cleaning on elements placed on the net piece 24, the cleaning effect is guaranteed, a cleaning person can intuitively know the PH value of the liquid in the cleaning compartment through the PH value detector 22, the cleaning time is controlled through the PH value of the solution, and the operation of the cleaning person is facilitated.
The water washing spray header 19 is fixed on the water washing blow-drying compartment 21 through bolts and is connected with the miniature water pump 15 in the circulating water tank 16 through a water pipe, the hot air spray head 18 is fixed on the water washing blow-drying compartment 21 through bolts and is fixedly connected with the hot air pipe 17, and waste heat of power plant waste gas is conveyed to the water washing blow-drying compartment 21 through an exhaust fan, so that the water stain problem after the elements are cleaned is solved, meanwhile, waste is utilized, the production cost is reduced, and the working benefit is improved.
One end of the hot air pipe 17 is provided with an exhaust fan.
The control switch 11 is fixedly connected with the alkaline washing compartment 23 through bolts, and the control switch 11 is electrically connected with the electric telescopic rod 6, the motor 7, the micro water pump 15 and the exhaust fan.
The working method comprises the following steps: the motor 7 drives the rotating shaft 8 to rotate, the electric telescopic rod 6 fixed on the rotating shaft 8 also rotates, the heat exchange element 2 on the gripper 3 is sent to the net piece 24 in the alkaline washing compartment 23 to be washed for the first time, the micro water pump 15 in the circulating alkaline liquid pool 12 conveys alkaline liquid to the alkaline washing spray header 25 to spray out through the water pipe, the uninterrupted washing process is realized, the washing degree is judged by observing the PH value on the PH value detector 22, the washing time is controlled, when the PH value in the alkaline washing compartment 23 meets the specified requirement, the heat exchange element 2 is moved to the net piece 24 in the water washing compartment 21, the micro water pump 15 in the circulating water pool 16 conveys water to the water washing spray header 19 to spray out through the water pipe, the heat exchange element 2 is washed again, the PH value on the PH value detector 22 is observed to judge the washing degree, the washing time is controlled, after the washing is finished, the waste heat of a power plant is conveyed to the water washing compartment 21 through the hot air pipe 17 by using the exhaust fan, the heat exchange element 2 is dried by the hot air spray header 18, and the fly ash on the heat exchange element 2 is discharged through the drain 14.
The device belongs to offline cleaning, the problem that the operation of a machine can cause personal injury to cleaning personnel during online cleaning is avoided, the heat exchange element to be cleaned is taken out through the gripper 3, the labor intensity of the cleaning personnel is reduced, the alkaline cleaning compartment 23 cleans the heat exchange element 2 for the first time, the washing drying compartment 21 cleans the heat exchange element 2 for the second time, the cleaning effect is ensured, and the exhaust fan conveys waste heat of a power plant into the washing drying compartment 21 through the hot air pipe to dry the heat exchange element 2, so that the water stain problem after the heat exchange element 2 is cleaned is solved, and meanwhile, the waste is utilized.
Although the present invention has been described with reference to the above embodiments, it should be understood that the present invention is not limited to the above embodiments, and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a miniaturized air preheater off-line belt cleaning device, including rotary air preheater (1), heat transfer element (2), tongs (3), lifting rope (4), runner (5), electric telescopic handle (6), motor (7), pivot (8), bracing piece (9), fixed plate (10), control switch (11), circulation alkali liquid bath (12), swash plate (13), drain (14), miniature water pump (15), circulation pond (16), hot-blast main (17), hot-blast shower nozzle (18), washing shower head (19), apron (20), washing weather compartment (21), PH value detector (22), alkali wash compartment (23), net piece (24) and alkali wash shower head (25); the method is characterized in that: the heat exchange element (2) is installed in the rotary air preheater (1), one side of the alkaline washing compartment (23) is provided with the water washing and drying compartment (21), the top ends of the alkaline washing compartment (23) and the water washing and drying compartment (21) are respectively provided with the cover plate (20), the inner middle section of the alkaline washing compartment (23) and the water washing and drying compartment (21) is provided with the net piece (24), the alkaline washing compartment (23) and the water washing and drying compartment (21) are respectively provided with the PH value detector (22), the upper and lower ends of one side inner surface of the alkaline washing compartment (23) are respectively provided with the alkaline washing spray head (25), the bottom end of the alkaline washing compartment (23) is provided with the circulating alkali liquid pool (12), one side of the inner part of the circulating alkali liquid pool (12) is provided with the micro water pump (15), the lower part of the micro water pump (15) is provided with the inclined plate (13), one end of the inclined plate (13) is provided with the sewage draining port (14), one side of the alkaline washing compartment (23) is provided with the control rod (9), one side of the alkaline washing compartment (9) is provided with the top end of the circulating liquid pool (12) is provided with the circulating alkali pool (12), one side of the motor (7) is provided with the electric telescopic rod (6), the electric telescopic rod (6) is fixedly connected with the rotating shaft (8), one end of the electric telescopic rod (6) is provided with the rotating wheel (5), the rotating wheel (5) is provided with the lifting rope (4), and the bottom end of the lifting rope (4) is provided with the gripper (3); the water washing and drying compartment (21) is characterized in that the upper end and the lower end of the two sides of the interior of the water washing and drying compartment (21) are provided with the water washing spray heads (19), the bottom end of one side of the interior of the water washing and drying compartment (21) is provided with the hot air spray head (18), one end of the hot air spray head (18) is provided with the hot air pipe (17), the bottom end of the water washing and drying compartment (21) is provided with the circulating water tank (16), one side of the interior of the circulating water tank (16) is provided with the miniature water pump (15), the lower part of the miniature water pump (15) is provided with the sloping plate (13), and one end of the sloping plate (13) is provided with the drain outlet (14); the alkaline washing spray header (25) is connected with the miniature water pump (15) in the circulating alkali liquid pool (12) through a water pipe, and the water washing spray header (19) is connected with the miniature water pump (15) in the circulating water pool (16) through a water pipe; one end of the hot air pipe (17) is provided with an exhaust fan.
2. The miniaturized air preheater off-line cleaning apparatus of claim 1, wherein: the fixed plate (10) is fixedly connected with the alkaline washing compartment (23) through bolts, the supporting rod (9) is fixedly connected with the fixed plate (10) through bolts, and the rotating wheel (5) is fixedly connected with the electric telescopic rod (6) through bolts.
3. The miniaturized air preheater off-line cleaning apparatus of claim 1, wherein: the washing drying compartment (21) is fixedly connected with the alkaline washing compartment (23) through bolts, and the circulating alkali liquid pool (12) and the circulating water pool (16) are respectively and fixedly connected with the alkaline washing compartment (23) and the washing drying compartment (21) through bolts.
4. The miniaturized air preheater off-line cleaning apparatus of claim 1, wherein: the alkaline washing spray head (25) is fixed on the alkaline washing compartment (23) through bolts, the net piece (24) is fixed on the water washing blow-drying compartment (21) and the alkaline washing compartment (23) through bolts, the detachable cover plate (20) is installed on the top ends of the water washing blow-drying compartment (21) and the alkaline washing compartment (23), and the PH value detector (22) is fixed on the cover plate (20) through a fixing seat and stretches into the water washing blow-drying compartment (21) and the alkaline washing compartment (23).
5. The miniaturized air preheater off-line cleaning apparatus of claim 1, wherein: the water washing spray header (19) is fixed on the water washing blow-drying compartment (21) through bolts, and the hot air spray head (18) is fixed on the water washing blow-drying compartment (21) through bolts.
6. The miniaturized air preheater off-line cleaning apparatus of claim 1, wherein: the control switch (11) is fixedly connected with the alkaline washing compartment (23) through bolts, and the control switch (11) is electrically connected with the electric telescopic rod (6), the motor (7), the miniature water pump (15) and the exhaust fan.
7. A method of operating a miniaturized air preheater off-line cleaning apparatus as set forth in any one of claims 1-6, wherein: the process is as follows: the motor (7) drives the rotating shaft (8) to rotate, the electric telescopic rod (6) fixed on the rotating shaft (8) also rotates, the heat exchange element (2) on the gripper (3) is sent to the mesh (24) in the alkaline washing compartment (23) to be cleaned for the first time, the micro water pump (15) in the circulating alkaline liquid pool (12) conveys alkaline liquid to the alkaline washing spray header (25) through the water pipe to spray out, the uninterrupted cleaning process is realized, the cleaning degree is judged by observing the PH value on the PH value detector (22), so that the cleaning time is controlled, when the PH value in the alkaline washing compartment (23) reaches the specified requirement, the heat exchange element (2) is moved to the mesh (24) in the water washing blow-drying compartment (21), the micro water pump (15) in the circulating water pool (16) conveys water to the water spray header (19) to spray out, the PH value on the PH value detector (22) is observed again, the cleaning degree is judged through the PH value on the PH value detector (22) so that the cleaning time is controlled, after the cleaning time is finished, the waste heat exchange element (2) is dried through the exhaust heat exchange element (14) through the exhaust fan (17), and the waste heat is dried through the waste heat of the heat pump (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910515566.0A CN110345806B (en) | 2019-06-14 | 2019-06-14 | Off-line cleaning device for miniaturized air preheater and working method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910515566.0A CN110345806B (en) | 2019-06-14 | 2019-06-14 | Off-line cleaning device for miniaturized air preheater and working method thereof |
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| CN110345806A CN110345806A (en) | 2019-10-18 |
| CN110345806B true CN110345806B (en) | 2023-11-14 |
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| CN113251851B (en) * | 2021-04-06 | 2023-06-02 | 山东中实易通集团有限公司 | Cleaning agent for cleaning air preheater blockage (ammonium sulfate salt) of coal-fired power plant, and preparation and application thereof |
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| CN204555805U (en) * | 2015-02-15 | 2015-08-12 | 苏州鸿普精密模具有限公司 | The lifting grasping mechanism of automobile condenser Chemical cleaning machine |
| CN105758253A (en) * | 2016-04-28 | 2016-07-13 | 国电科学技术研究院 | High-pressure-head low-flow non-isolated online cleaning device for rotary air preheater |
| CN207857497U (en) * | 2017-12-20 | 2018-09-14 | 石家庄鹏海制药股份有限公司 | A kind of water for injection and clean compressed air wash blow-dry device |
| CN211178119U (en) * | 2019-06-14 | 2020-08-04 | 华电电力科学研究院有限公司 | Off-line cleaning device for miniaturized air pre-heater |
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