CN113007730A - Rotary type heat exchanger ash and scale online continuous cleaning device - Google Patents
Rotary type heat exchanger ash and scale online continuous cleaning device Download PDFInfo
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- CN113007730A CN113007730A CN202110211758.XA CN202110211758A CN113007730A CN 113007730 A CN113007730 A CN 113007730A CN 202110211758 A CN202110211758 A CN 202110211758A CN 113007730 A CN113007730 A CN 113007730A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
- F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
Abstract
The invention provides an online continuous cleaning device for ash and dirt of a rotary heat exchanger, which comprises an air preheater rotor, wherein cleaning devices are respectively arranged at the cold end and the hot end of the air preheater rotor, and the cleaning devices are fully-telescopic T-shaped double-arc spray pipe fan-shaped rectifying nozzle devices. The cleaning device has a good cleaning effect on the air preheater rotor, can continuously clean and improve the working efficiency, and the T-shaped double-arc spray pipe is retracted when the cleaning device is not cleaned. The bottom spray pipe is retracted below the ash baffle welded on the flue wall, so that smoke dust is prevented from entering the nozzle to cause blockage. When the T-shaped double-arc spray pipe is installed, the upper and lower T-shaped double-arc spray pipes which are fully telescopic are suspended and supported on the two positioning rails by the roller wheel bracket, so that the T-shaped double-arc spray pipes are prevented from inclining or jumping up and down.
Description
Technical Field
The invention relates to the technical field of cleaning of ash and scale of a heat exchanger during rotation, in particular to an online continuous cleaning device for ash and scale of a rotary heat exchanger.
Background
After the ultra-clean discharge policy in China is met, most of catalysts for catalytic reduction denitration (SCR) reaction of coal-fired units are added by one layer, and the content of nitrogen oxides in a flue flow field is not balanced. At present, the 9-grid partition online alternate measurement technology is less modified, and the modification also causes serious blockage, thereby influencing normal operation. The ammonia escape is measured in an online partition mode, and the ammonia escape amount of a denitration outlet 9 grid is 10 times different. The escape amount of ammonia in each cell zone reaches more than ten ppm. The corresponding precise partitioned ammonia spraying technology has defects, and needs further improvement. In order to reach the ultra-clean emission standard of nitrogen oxides, ammonia escaping caused by excessive ammonia spraying (NH3) can be realized, the escaped NH3 reacts with SO3 and H2O in downstream equipment to generate ammonium bisulfate, the caking property is strong in liquid state, and a caking ash deposition area is formed to increase the pressure difference of the rotary heat exchanger. The power consumption of the three fans is increased, and the exhaust gas temperature of the boiler is increased, so that the efficiency of the boiler is reduced. And when the load of the unit is more seriously influenced, the unit is stopped.
At present, the on-line ash and scale cleaning mode of the air preheater mainly comprises the following steps: the device comprises a sound wave soot blower, a gas pulse soot blower, a high-pressure water cleaning device and a steam soot blower.
The acoustic wave soot blower utilizes the oscillation of compressed air on a metal diaphragm to generate acoustic wave impact force to clean soot; the pulse soot blower is used for cleaning soot by using blast waves generated by gas-air mixed gas; the high-pressure water cleaning device cleans a gun barrel of a solid conical nozzle with the diameter of 1.7mm arranged at intervals around a semi-telescopic single straight pipe with the water pressure of 20-30MPa, and the steam soot blower cleans superheated steam with the pressure of 1.2MPa and the temperature of 300 ℃ through a steam nozzle with the diameter of 11-20mm arranged at intervals around the semi-telescopic single straight pipe with the diameter of 6mm reduced and expanded. According to the key factors that the fly ash adhered to the ammonium bisulfate blocks the cleaning of the air preheater, the flushing medium needs high temperature (more than 170 ℃), effective target distance impact force and continuous impact time. And the online cleaning in operation, the flushing medium can not carry water, so that the bag of the bag-type dust collector is prevented from being burnt, and the adhesion and blockage of the fly ash and the ammonium bisulfate are aggravated when the water enters the heat storage element. Therefore, no matter the purchase cost of the sound wave soot blower and the pulse soot blower is high, the function can not meet the online cleaning requirement in the operation of the rotary air preheater. The high-pressure water washing device is not dare to use on line. The only steam sootblower can meet the above requirements.
The problems of the existing steam soot blower are as follows: one is that the duration of the impact cannot be met. All air preheater steam soot blowers in the current market are single medium, double medium (steam and high/low pressure water), semi-telescopic, fully telescopic, hot end and cold end, and the commonality of key factors is as follows: the single straight gun tube stretches and retracts in a constant-speed stepping mode, and the continuous impact time cannot be met at the rotating speed of the heat storage element, wherein the linear speed of the heat storage element is about 1 m/s. The single straight gun pipe stretches at a constant speed, and the continuous impact time cannot be met under the relative motion of the rotating heat storage elements corresponding to the four nozzles at the speed of 0.3-1 m/s and multiple lines. Because the heat storage element ABS is just heated by the 300 ℃ steam jet flow of the nozzle, the steam is transferred from the flue gas bin to the primary air bin of the secondary air bin and is cooled by low-temperature air. Even if the stay step length is long, the purging period (the number of turns) is prolonged for the arc with the same radius, and the cleaning effect is also poor.
And secondly, the impact force and the impact angle of the nozzle target distance are improper, and the blockage of ammonium bisulfate ash scale of the rotary cleaning air preheater is related to the temperature and the continuous impact time of a cleaning medium. But also the optimum target distance, impact angle. The impact factors of the jet target distance are as follows: nozzle configuration, steam pressure, temperature, etc. The nozzles of the existing air preheater steam soot blowers are basically reducing and gradually expanding Laval cylindrical solid nozzles. The specifications of a laval nozzle generally refer to the through-flow diameter of the throat. For example, a phi 16 nozzle, the throat size DA of which is phi 16mm, the inlet DA1 of which is phi 20mm, the outlet DA2 of which is phi 25mm, the outlet flow rate of which is 0.314kg/s and the outlet flow rate of which is 434 m/s. The overall outer diameter of the nozzle is phi 30mm, and the length is 30 mm.
The nozzle phi 10 has the throat size DA phi 10mm, the inlet DA1 phi 18mm, the outlet DA2 phi 20mm, the outlet flow rate 0.1523kg/s and the flow rate 445 m/s. The overall outer diameter of the nozzle is phi 30mm, and the length is 30 mm. The jet state of the Laval nozzle can be divided into a beam collecting section, a diverging section and a dissipating section. The hair dryer is divided into an atomizing area and a core area. In cleaning applications, the core region of its divergent section is mainly utilized. The pressure and temperature of the flushing medium and the through-flow diameter and diffusion angle of the nozzle all affect the target distance impact force and target distance impact area of the nozzle jet. Due to the limitation of the radial sealing plate of the air preheater, the distance between the nozzle of the straight tube gun barrel and the top surface of the heat storage element is about: about 450 mm. The thermal state mushroom-shaped deformation amplitude of the air preheater rotor (1) is large, and the rotor deformation reaches 55mm for a preheater with the diameter of more than 12 meters. The actual distance for online work is around 500 mm. The jet surface diameter of the phi 16 nozzle steam nozzle with the target distance of 500mm is 229 mm. The jet surface diameter of the phi 10 nozzle steam nozzle with the target distance of 500mm is 247 mm.
The improvement of pressure and flow rate (increasing the diameter of the nozzle) can improve the target distance impact force of the nozzle. However, the corrugated plates and the positioning plates of the heat storage elements with the thickness of 0.5mm overturn and collapse under the lateral impact of the diffused cylindrical jet flow with a small included angle.
Therefore, it is necessary to provide an on-line continuous cleaning device for ash and dirt of a rotary heat exchanger to solve the above technical problems.
Disclosure of Invention
In order to solve the technical problem, the invention provides an online continuous cleaning device for ash and dirt of a rotary heat exchanger.
The invention provides an online continuous cleaning device for ash and scale of a rotary heat exchanger, which comprises an air preheater rotor, wherein cleaning devices are respectively arranged at the cold end and the hot end of the air preheater rotor, and an ash removal device is fixed at one end of each cleaning device;
the cleaning device comprises a driving shell, an adjusting device, a valve device, a rack, a U-shaped sliding block, a first gear, a worm speed reducer, a first servo motor, a sliding barrel, a sleeve, an inner pipe, a T-shaped double-arc spray pipe and a fan-shaped rectifying spray head, wherein the driving shell is respectively arranged on two sides of a rotor of the air preheater, which are positioned at a cold end and a hot end, the adjusting device is fixed on one side of the driving shell, the rack is fixed on the inner wall of the driving shell, the U-shaped sliding block is connected to one end of the rack in a sliding manner, a through groove is formed in the middle of the U-shaped sliding block, the inner wall of the through groove is rotatably connected with the first gear through a bearing, the first gear is meshed with the rack, the worm speed reducer is fixed on one side of the U-shaped sliding block, the output end of the worm speed reducer is fixedly connected with the first gear, the first, a sliding barrel is fixed at the top of the U-shaped sliding block, a sleeve is fixed at one end of the sliding barrel through a flange, an inner pipe is connected to the inner wall of the sleeve in a sliding manner, a valve device is fixed at one end of the inner wall of the driving shell, a T-shaped double-arc spray pipe is fixed at one end of the sleeve after penetrating through the driving shell, and a plurality of fan-shaped rectifying spray heads are fixed on one side of the T-shaped double-arc spray pipe at equal intervals;
the ash removing device comprises an L-shaped plate, a first mounting plate, a fixing plate, a first rotating shaft, a brush, a second gear, a third gear and a second servo motor, l-shaped plates are symmetrically fixed at one end of the driving shell away from the valve device, first mounting plates are fixed at the tops of the two L-shaped plates, a fixing plate is fixed at one side of the tops of the two first mounting plates, the surface of the fixed plate is rotationally connected with a first rotating shaft at equal intervals through a bearing, a brush is fixed at the top of the first rotating shaft, a second gear is fixed at one end of the first rotating shaft far away from the hairbrush, a third gear is rotatably connected at one end of the fixed plate close to the second gear through a bearing, the second gear is meshed with the third gear, a second servo motor is fixed on the inner wall of one L-shaped plate, and the output end of the second servo motor penetrates through the L-shaped plate and is fixedly connected with one first rotating shaft.
Preferably, the ash removing device also comprises a first fixed block, a slide rod, a clamping block, a trapezoidal groove, an inserted rod, a clamping plate, a rubber pad, a limiting ring and a first spring, first fixed blocks are symmetrically fixed at both ends of the fixed plate, the middle parts of the two first fixed blocks are connected with a slide bar in a sliding way through guide sleeves, one end of the sliding rod passes through the first fixed block to be fixed with a clamping block, the middle part of the clamping block is provided with a trapezoidal groove, two ends of the T-shaped double-arc spray pipe are symmetrically fixed with inserted bars which are inserted with the trapezoidal grooves, one ends of the two sliding bars far away from the clamping block are fixed with clamping plates, a rubber pad is fixed on one side of the clamping plate, a limit ring is fixed between the two first fixing blocks on the sliding rod, the outer side of the sliding rod is sleeved with a first spring, one end of the first spring is fixedly connected with the limiting ring, and the other end of the first spring is fixedly connected with a first fixing block.
Preferably, adjusting device includes second mounting panel, second fixed block, threaded rod and threaded sleeve, drive shell one side sliding connection has the second mounting panel, second mounting panel one end symmetry is fixed with the second fixed block, two the second fixed block is connected with the threaded rod through the bearing rotation, threaded rod one end screw thread connection has threaded sleeve, threaded sleeve one end and drive shell fixed connection.
Preferably, the drive shell is close to one side symmetry of second mounting panel and is fixed with the slide rail, second mounting panel one side symmetry is fixed with the track slider, and track slider and slide rail sliding connection.
Preferably, a hexagonal knob is fixed at one end of the threaded rod, and a hexagonal groove is formed in one side of the hexagonal knob.
Preferably, the valve device comprises a T-shaped plate, a valve main body, an air inlet pipe, a fixed seat, a crank, a fixed sleeve, a second spring, a connecting rod, a fixed column, a clamping sheet, a retaining groove, a fixed strip and a shifting column, wherein the T-shaped plate is fixed at one end of the inner wall of the driving shell, the valve main body is fixed at the upper end of the T-shaped plate, the air outlet end of the valve main body is communicated with the inner pipe, the air inlet pipe is fixed at the air inlet end of the valve main body, the fixed seat is fixed at the bottom of the valve main body, one end of the fixed seat is rotatably connected with the crank through a shaft pin, the crank is in a forked arrangement, the adjusting end of the valve main body is contacted with the fork of the crank, the fixed sleeve is sleeved outside the adjusting end of the valve main body, the fixed sleeve is fixedly connected with the valve main body, the, the crank bottom is connected with the connecting rod through pivot rotation, the through-hole has been seted up to T shaped plate one end, connecting rod one end is passed the through-hole and is fixed with the fixed column, fixed column one end is rotated through the pivot and is connected with joint piece, and joint piece one end has seted up and has kept off the groove, the one end that the U-shaped slider is close to joint piece is fixed with the fixed strip, fixed strip one end is fixed with dials the post, and dials post and fender groove sliding connection.
Preferably, the surface of the fixing strip is equidistantly fixed with mounting holes, and the shifting columns are fixedly connected with the mounting holes.
Preferably, the air preheater rotor includes central heat pipe, radiating fin and baffle, central heat pipe outside equidistance is fixed with radiating fin, and a plurality of radiating fin outside symmetries are fixed with the baffle.
Preferably, first servo motor and second servo motor are a gear motor, drive shell one side is fixed with the controller, and first servo motor and second servo motor all with controller electric connection.
Preferably, a sliding seal is arranged between the inner pipe and the sleeve.
Compared with the prior art, the rotary heat exchanger ash and scale online continuous cleaning device provided by the invention has the following beneficial effects:
the invention provides an on-line continuous cleaning device for ash and dirt of a rotary heat exchanger, which comprises the following steps:
1. the dust is cleaned by steam, in the cleaning process, a first gear and a rack are driven by a first servo motor to be matched to drive a sleeve to slide so as to drive a T-shaped double-arc spray pipe to move on the surface of an air preheater rotor, so that the air preheater rotor is comprehensively cleaned, two cleaning devices are respectively positioned at the cold end and the hot end of the air preheater rotor, a fan-shaped rectifying spray head close to the cold end blows upwards, a fan-shaped rectifying spray head close to the hot end blows downwards, the cold end blows firstly, the hot end lags to form an upper-end-to-tail layout, one point position of a radiating fin can be continuously cleaned by high-temperature vacuum jet flow sprayed by a plurality of fan-shaped rectifying spray heads, the linear velocity of the outer circle part of the air preheater rotor is greater than the linear velocity of the inner circle part, when the outer circle jet duration is set to be two circles, the fan-shaped rectifying spray heads step forward in sequence, the inner, the stepping distance is 100mm each time, and the dust intensity of the ABS bonding dust deposition area is more than 5 times of that of the loose dust deposition area, so that the specifications of the fan-shaped rectifying spray heads at the hot end and the cold end are different, the number of the fan-shaped rectifying spray heads at the cold end or the total equivalent of jet flow is more than 5 times of that at the hot end, and the cleaning effect can be greatly improved;
2. when the nozzle is not cleaned, the T-shaped double-arc spray pipe is retracted, and the bottom spray pipe is retracted below the ash baffle welded on the flue wall, so that smoke dust is prevented from entering the nozzle to cause blockage.
3. When the cleaning device is installed, the upper cleaning device and the lower cleaning device are suspended and supported on the two positioning rails by the roller wheel bracket, so that the T-shaped double-arc spray pipe is prevented from inclining or jumping up and down.
Drawings
FIG. 1 is a schematic view of the overall structure provided by the present invention;
FIG. 2 is a schematic structural view of a cleaning apparatus according to the present invention;
FIG. 3 is a schematic view of a slide cartridge according to the present invention;
FIG. 4 is a schematic view of a first gear structure provided by the present invention;
FIG. 5 is a schematic view of a valve device according to the present invention;
FIG. 6 is a second schematic view of the valve device according to the present invention;
FIG. 7 is a schematic view of an adjusting device according to the present invention;
FIG. 8 is a schematic view of the ash removal device according to the present invention;
FIG. 9 is a second schematic view of the ash removal device according to the present invention;
FIG. 10 is a third schematic view of the ash removal device according to the present invention.
Reference numbers in the figures: 1. an air preheater rotor; 11. a central heat conducting pipe; 12. a heat dissipating fin; 13. a baffle plate; 2. A cleaning device; 21. a drive case; 22. an adjustment device; 221. a second mounting plate; 222. a second fixed block; 223. a threaded rod; 224. a threaded sleeve; 225. a slide rail; 226. a track slider; 227. a hexagonal knob; 23. a valve means; 231. a T-shaped plate; 232. a valve body; 233. an air inlet pipe; 234. a fixed seat; 235. a crank; 236. fixing a sleeve; 237. a second spring; 238. a connecting rod; 239. fixing a column; 2310. a clip sheet; 2311. a baffle groove; 2312. a fixing strip; 2313. column shifting; 2314. mounting holes; 24. A rack; 25. a U-shaped slider; 26. a first gear; 27. a worm speed reducer; 28. a first servo motor; 29. a slide cylinder; 210. a sleeve; 211. an inner tube; 212. a T-shaped double-arc nozzle; 213. a fan-shaped rectifying spray head; 3. a dust removal device; 31. an L-shaped plate; 32. a first mounting plate; 33. a fixing plate; 34. a first rotating shaft; 35. a brush; 36. a second gear; 37. a third gear; 38. a second servo motor; 39. a first fixed block; 310. a slide bar; 311. a clamping block; 312. a trapezoidal groove; 313. inserting a rod; 314. a splint; 315. A rubber pad; 316. a limiting ring; 317. a first spring; 4. and a controller.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
In a specific implementation process, as shown in fig. 1, the online continuous cleaning device for ash scale of a rotary heat exchanger comprises an air preheater rotor 1, wherein the air preheater rotor 1 comprises a central heat conduction pipe 11, heat dissipation fins 12 and baffles 13, the heat dissipation fins 12 are fixed on the outer side of the central heat conduction pipe 11 at equal intervals, the baffles 13 are symmetrically fixed on the outer sides of a plurality of heat dissipation fins 12, cleaning devices 2 are respectively arranged at the cold end and the hot end of the air preheater rotor 1, and an ash removal device 3 is fixed at one end of each cleaning device 2;
referring to fig. 2, 3 and 4, the cleaning device 2 includes a driving shell 21, an adjusting device 22, a valve device 23, a rack 24, a U-shaped slider 25, a first gear 26, a worm reducer 27, a first servo motor 28, a sliding cylinder 29, a sleeve 210, an inner tube 211, a T-shaped double-arc nozzle 212 and a fan-shaped rectifying nozzle 213, the driving shell 21 is respectively disposed on two sides of the air preheater rotor 1 located at the cold end and the hot end, the adjusting device 22 is fixed on one side of the driving shell 21, the rack 24 is fixed on the inner wall of the driving shell 21, one end of the rack 24 is slidably connected with the U-shaped slider 25, a through slot is disposed in the middle of the U-shaped slider 25, the inner wall of the through slot is rotatably connected with the first gear 26 through a bearing, the first gear 26 is engaged with the rack 24, the worm reducer 27 is fixed on one side of the U-shaped slider 25, and the output end of the worm reducer 27 is fixedly connected, a first servo motor 28 is fixed at one end of the worm speed reducer 27, the output end of the first servo motor 28 is fixedly connected with the input end of the worm speed reducer 27, a sliding cylinder 29 is fixed at the top of the U-shaped sliding block 25, a sleeve 210 is fixed at one end of the sliding cylinder 29 through a flange, an inner pipe 211 is connected to the inner wall of the sleeve 210 in a sliding manner, a sliding seal is arranged between the inner pipe 211 and the sleeve 210 to facilitate the sealing between the inner pipe 211 and the sleeve 210, a valve device 23 is fixed at one end of the inner wall of the driving shell 21, a T-shaped double-arc nozzle 212 is fixed at one end of the sleeve 210 through the driving shell 21, a plurality of fan-shaped rectifying nozzles 213 are fixed at one side of the T-shaped double-arc nozzle 212 at equal intervals, when in use, the two cleaning devices 2 are respectively located at the cold end and the hot end of the air preheater rotor 1, the fan-shaped rectifying, the cold end blows firstly, the hot end lags to form an upper-lower end-to-end layout, one point position of the radiating fin 12 can be continuously cleaned by high-temperature vacuum jet flow ejected by the fan-shaped rectifying spray heads 213 for 4 meters of arc length, the linear speed of the outer circle part of the air preheater rotor 1 is greater than that of the inner circle part, when the outer circle spraying time length is set to be two circles, the fan-shaped rectifying spray heads 213 step forward in sequence, the inner circle spraying time length is set to be one-circle stepping, the stepping distance of each time is 100mm, and the ash deposition strength of the ABS bonding ash deposition area is more than 5 times of that of the loose ash deposition area, so the specifications of the fan-shaped rectifying spray heads 213 at the hot end and the cold end are different, and the number of the fan-shaped rectifying spray; when the air preheater is used, an air source enters the valve main body 232 through the air inlet pipe 233, the through hole controller 4 controls the first servo motor 28 to rotate, the first servo motor 28 drives the first gear 26 to rotate through the worm speed reducer 27, and the first gear 26 is meshed with the rack 24, so that the first gear 26 drives the U-shaped slider 25 to slide, the U-shaped slider 25 drives the sliding barrel 29 to slide, the sleeve 210 can be driven to slide outside the inner pipe 211, the T-shaped double-arc spray pipe 212 moves to the outer circle of the air preheater rotor 1, air is sprayed out through the sleeve 210, the T-shaped double-arc spray pipe 212 and the sector rectifying spray head 213, the air preheater is purged, and when the T-shaped double-arc spray pipe 212 needs to be stepped, the sliding barrel 29 is continuously driven to slide through the first servo motor 28;
referring to fig. 7, the adjusting device 22 includes a second mounting plate 221, a second fixing block 222, threaded rods 223 and threaded sleeves 224, the second mounting plate 221 is slidably connected to one side of the driving shell 21, the second fixing block 222 is symmetrically fixed to one end of the second mounting plate 221, the threaded rods 223 are rotatably connected to two of the second fixing blocks 222 through bearings, the threaded sleeves 224 are threadedly connected to one ends of the threaded rods 223, one ends of the threaded sleeves 224 are fixedly connected to the driving shell 21, slide rails 225 are symmetrically fixed to one side of the driving shell 21 close to the second mounting plate 221, rail sliders 226 are symmetrically fixed to one side of the second mounting plate 221, the rail sliders 226 are slidably connected to the slide rails 225, a hexagonal knob 227 is fixed to one end of the threaded rods 223, a hexagonal groove is formed in one side of the hexagonal knob 227, the hexagonal knob 227 is rotated by a wrench, and the threaded rods 223 can be driven to rotate, so that the threaded rod 223 drives the threaded sleeve 224 to move, and further drives the whole cleaning device 2 to move up and down, so as to correct the initial position during installation.
Referring to fig. 5 and 6, the valve device 23 includes a T-shaped plate 231, a valve main body 232, an air inlet pipe 233, a fixing seat 234, a crank 235, a fixing sleeve 236, a second spring 237, a connecting rod 238, a fixing column 239, a clamping piece 2310, a retaining groove 2311, a fixing strip 2312 and a shifting column 2313, the T-shaped plate 231 is fixed at one end of the inner wall of the driving shell 21, the valve main body 232 is fixed at the upper end of the T-shaped plate 231, the air outlet end of the valve main body 232 is communicated with the inner tube 211, the air inlet pipe 233 is fixed at the air inlet end of the valve main body 232, the fixing seat 234 is fixed at the bottom of the valve main body 232, one end of the fixing seat 234 is rotatably connected with the crank 235 through a shaft pin, the crank 235 is in a forked arrangement, the adjusting end of the valve main body 232 is in forked contact with the forked crank 235, the, a second spring 237 is sleeved outside the fixing sleeve 236, one end of the second spring 237 is fixedly connected with the fixing sleeve 236, the other end of the second spring 237 is fixedly connected with an adjusting end of the valve main body 232, the bottom of the crank 235 is rotatably connected with a connecting rod 238 through a shaft pin, one end of the T-shaped plate 231 is provided with a through hole, one end of the connecting rod 238 penetrates through the through hole to be fixed with a fixing column 239, one end of the fixing column 239 is rotatably connected with a clamping piece 2310 through the shaft pin, one end of the clamping piece 2310 is provided with a blocking groove 2311, one end of the U-shaped slider 25, which is close to the clamping piece 2310, is fixed with a fixing strip 2312, one end of the fixing strip 2312 is fixed with a shifting column 2313;
when the valve slides, the shifting post 2313 is driven to move by the fixing strip 2312, so that the shifting post 2313 shifts the blocking groove 2311 of the clamping sheet 2310, at the moment, the adjusting end of the valve main body 232 is in a closed state, the shifting post 2313 has force for pulling the clamping sheet 2310, since the adjusting end of the valve main body 232 cannot be pushed upward, the catching piece 2310 cannot slide, so that the shifting post 2313 can shift the clamping sheet 2310 to rotate until the shifting post 2313 is separated from the blocking groove 2311, at the moment, the connecting rod 238 loses the holding force of the clamping sheet 2310, so that the adjustment end of the valve main body 232 is pushed up by the elastic force of the second spring 237, so that the valve main body 232 is opened, so that the gas source can be blown into the inner tube 211 through the valve main body 232, and then is sprayed out through the sleeve 210, the T-shaped double-arc spray pipe 212 and the fan-shaped rectifying spray head 213, and (4) purging the air preheater, and when the T-shaped double-arc spray pipe 212 needs to be stepped, continuously driving the sliding barrel 29 to slide through the first servo motor 28.
Referring to fig. 2, 8, 9 and 10, the ash removing device 3 includes L-shaped plates 31, first mounting plates 32, fixing plates 33, first rotating shafts 34, brushes 35, second gears 36, third gears 37 and second servo motors 38, the L-shaped plates 31 are symmetrically fixed to one end of the driving housing 21 away from the valve device 23, the first mounting plates 32 are fixed to the tops of the two L-shaped plates 31, the fixing plates 33 are fixed to one sides of the tops of the two first mounting plates 32, the first rotating shafts 34 are rotatably connected to the surfaces of the fixing plates 33 at equal intervals through bearings, the brushes 35 are fixed to the tops of the first rotating shafts 34, the second gears 36 are fixed to one ends of the first rotating shafts 34 away from the brushes 35, one ends of the fixing plates 33 close to the second gears 36 are rotatably connected to the third gears 37 through bearings, the second gears 36 are connected to the third gears 37 in a meshing manner, the second servo motors 38 are fixed to the inner walls of one L-shaped plate 31, the output end of the second servo motor 38 passes through the L-shaped plate 31 and is fixedly connected with one of the first rotating shafts 34; the ash removal device 3 further comprises first fixing blocks 39, sliding rods 310, clamping blocks 311, trapezoidal grooves 312, inserting rods 313, clamping plates 314, rubber pads 315, limiting rings 316 and first springs 317, wherein the two ends of the fixing plate 33 are symmetrically fixed with the first fixing blocks 39, the middle parts of the two first fixing blocks 39 are connected with the sliding rods 310 in a sliding mode through guide sleeves, one ends of the sliding rods 310 penetrate through the first fixing blocks 39 to be fixed with the clamping blocks 311, the middle parts of the clamping blocks 311 are provided with the trapezoidal grooves 312, the two ends of the T-shaped double-arc spray pipe 212 are symmetrically fixed with the inserting rods 313, the bottom of the inserting rods 313 is arranged in an inclined plane matched with the trapezoidal grooves 312, the inserting rods 313 are connected with the trapezoidal grooves 312 in an inserting mode, one ends, far away from the clamping blocks 311, of the two sliding rods 310 are fixed with the clamping plates 314, one sides of the clamping plates 314 are fixed with the rubber pads 315, the outer side of the sliding rod 310 is sleeved with a first spring 317, one end of the first spring 317 is fixedly connected with a limiting ring 316, the other end of the first spring 317 is fixedly connected with a first fixing block 39, after cleaning is completed, the T-shaped double-arc spray pipe 212 is driven to withdraw through the first servo motor 28, in the process of withdrawing the T-shaped double-arc spray pipe 212, the inserted link 313 on the T-shaped double-arc spray pipe 212 slides downwards, when the fan-shaped rectifying spray head 213 is close to the rubber pad 315, the inserted link 313 is inserted into the trapezoidal groove 312 and presses the inclined surface of the trapezoidal groove 312, so that the clamping block 311 moves towards one end, the sliding rod 310 slides, the first spring 317 is pressed through the limiting ring 316, the sliding rod 310 slides to drive the clamping plate 314 to move towards one end, the rubber pad 315 slowly moves towards one end of the fan-shaped rectifying spray head 213, and further the rubber pad 315 blocks the outlet of the fan-shaped rectifying spray head 213 when, prevent that the dust from plugging up the export, this moment, fan-shaped rectification shower nozzle 213 just inserts between two adjacent brushes 35, and at this moment, rotate through second servo motor 38 and drive first pivot 34 and rotate, and then can drive second gear 36 and rotate, and second gear 36 is connected with the meshing of third gear 37, and then makes a second gear 36 rotate and can drive a plurality of second gears 36 and rotate simultaneously, and then makes a plurality of brushes 35 rotate simultaneously, clears up the deposition of fan-shaped rectification shower nozzle 213 surface adhesion.
Referring to fig. 4, the surface of the fixing strip 2312 is equidistantly fixed with mounting holes 2314, the shifting columns 2313 are fixedly connected with the mounting holes 2314, and the shifting columns 2313 are mounted in the mounting holes 2314 at different positions, so that the shifting position of the clamping sheets 2310 can be adjusted when the sleeve 210 is contracted.
Referring to fig. 2, the first servo motor 28 and the second servo motor 38 are both speed reducing motors, the controller 4 is fixed on one side of the driving shell 21, and the first servo motor 28 and the second servo motor 38 are both electrically connected to the controller 4.
The working principle is as follows:
when in use, the two cleaning devices 2 are respectively positioned at the cold end and the hot end of the air preheater rotor 1, the fan-shaped rectifying spray head 213 close to the cold end blows upwards, the fan-shaped rectifying spray head 213 close to the hot end blows downwards, and the cold end blows first, the hot end lags behind to form the layout of upper and lower end to end, one point position of the radiating fin 12 can be continuously cleaned by the high-temperature vacuum jet flow sprayed by the plurality of fan-shaped rectifying spray heads 213 for 4 meters of arc length, the linear speed of the excircle part of the air preheater rotor 1 is greater than that of the inner circle part, the excircle spraying time length is set to be two circles, the sector-shaped rectifying spray head 213 is stepped forwards in sequence, the inner circle spraying duration is set to be one step, the stepping distance of each step is 100mm, and the dust deposition intensity of the ABS bonding dust deposition area is more than 5 times of that of the loose dust deposition area, therefore, the specifications of the fan-shaped rectifying spray heads 213 at the hot end and the cold end are different, and the number of the fan-shaped rectifying spray heads 213 at the cold end or the total equivalent of jet flow is more than 5 times that of the hot end;
when the valve is used, an air source enters the valve main body 232 through the air inlet pipe 233, the through hole controller 4 controls the first servo motor 28 to rotate, the first servo motor 28 drives the first gear 26 to rotate through the worm speed reducer 27, the first gear 26 is meshed with the rack 24, so that the first gear 26 drives the U-shaped slider 25 to slide, the U-shaped slider 25 drives the sliding barrel 29 to slide, the sleeve 210 can be driven to slide outside the inner pipe 211, the T-shaped double-arc spraying pipe 212 moves to the outer circle of the air preheater rotor 1, when the U-shaped slider 25 slides, the shifting post 2313 is driven to move through the fixing strip 2312, the shifting post 2313 shifts the blocking groove 2311 of the clamping sheet 2310, at the moment, the adjusting end of the valve main body 232 is in a closed state, the shifting post 2313 has a force for pulling the clamping sheet 2310, and the clamping sheet 2310 cannot slide because the adjusting end of the valve main body 232 cannot be pushed upwards, the shifting column 2313 can shift the clamping piece 2310 to rotate until the shifting column 2313 is separated from the blocking groove 2311, at the moment, the connecting rod 238 loses the holding force of the clamping piece 2310, so that the adjusting end of the valve main body 232 is jacked up by the elastic force of the second spring 237, the valve main body 232 is opened, an air source can be blown into the inner pipe 211 through the valve main body 232 and then is ejected out through the sleeve 210, the T-shaped double-arc spray pipe 212 and the fan-shaped rectifying spray head 213, the air preheater is purged, and when the T-shaped double-arc spray pipe 212 needs to be stepped, the sliding cylinder 29 is continuously driven to slide through the first servo motor 28;
when cleaning is completed, the T-shaped double-arc nozzle 212 is driven to retract by the first servo motor 28. The lower T-shaped twin arc nozzle 212 is retracted below the ash baffles welded to the flue wall.
During installation, the relative distance between the outlet of the bottommost fan-shaped rectifying nozzle of the T-shaped double-arc spray pipe and the sealing plate is determined according to the height of a radial sealing plate of the air preheater, so that rotation collision is prevented, and meanwhile, the amount of cold and hot mushroom deformation of a rotor of the air preheater is considered and calculated.
The circuits and controls involved in the present invention are prior art and will not be described in detail herein.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An online continuous cleaning device for ash and scale of a rotary heat exchanger comprises an air preheater rotor (1), and is characterized in that a cleaning device (2) is respectively arranged at the cold end and the hot end of the air preheater rotor (1), and an ash removal device (3) is fixed at one end of the cleaning device (2);
the cleaning device (2) comprises a driving shell (21), an adjusting device (22), a valve device (23), a rack (24), a U-shaped sliding block (25), a first gear (26), a worm speed reducer (27), a first servo motor (28), a sliding cylinder (29), a sleeve (210), an inner pipe (211), a T-shaped double-arc spray pipe (212) and a fan-shaped rectifying spray head (213), wherein the driving shell (21) is respectively arranged on two sides of a cold end and a hot end of the air preheater rotor (1), the adjusting device (22) is fixed on one side of the driving shell (21), the rack (24) is fixed on the inner wall of the driving shell (21), one end of the rack (24) is slidably connected with the U-shaped sliding block (25), a through groove is formed in the middle of the U-shaped sliding block (25), the inner wall of the through groove is rotatably connected with the first gear (26) through a bearing, and the first gear (26) is meshed with, a worm speed reducer (27) is fixed to one side of the U-shaped sliding block (25), the output end of the worm speed reducer (27) is fixedly connected with a first gear (26), a first servo motor (28) is fixed to one end of the worm speed reducer (27), the output end of the first servo motor (28) is fixedly connected with the input end of the worm speed reducer (27), a sliding barrel (29) is fixed to the top of the U-shaped sliding block (25), a sleeve (210) is fixed to one end of the sliding barrel (29) through a flange, an inner tube (211) is slidably connected to the inner wall of the sleeve (210), a valve device (23) is fixed to one end of the inner wall of the driving shell (21), a T-shaped double-arc spray pipe (212) is fixed to one end of the sleeve (210) through the driving shell (21), and a plurality of sector rectification spray heads (213) are fixed to one side of the T-shaped;
the ash removal device (3) comprises an L-shaped plate (31), a first mounting plate (32), a fixing plate (33), a first rotating shaft (34), a brush (35), a second gear (36), a third gear (37) and a second servo motor (38), wherein the L-shaped plate (31) is symmetrically fixed at one end of a driving shell (21) far away from a valve device (23), the first mounting plate (32) is fixed at the top of the L-shaped plate (31), the fixing plate (33) is fixed at one side of the top of the first mounting plate (32), the first rotating shaft (34) is rotationally connected on the surface of the fixing plate (33) in an equidistance mode through a bearing, the brush (35) is fixed at the top of the first rotating shaft (34), the second gear (36) is fixed at one end of the first rotating shaft (34) far away from the brush (35), the third gear (37) is rotationally connected at one end of the fixing plate (33) close to the second gear (, and the second gear (36) is meshed with the third gear (37), a second servo motor (38) is fixed on the inner wall of one L-shaped plate (31), and the output end of the second servo motor (38) penetrates through the L-shaped plate (31) to be fixedly connected with one first rotating shaft (34).
2. The on-line continuous cleaning device for ash and scale of the rotary heat exchanger according to claim 1, wherein the ash removing device (3) further comprises first fixing blocks (39), sliding rods (310), clamping blocks (311), trapezoidal grooves (312), inserting rods (313), clamping plates (314), rubber pads (315), limiting rings (316) and first springs (317), the first fixing blocks (39) are symmetrically fixed at two ends of the fixing plate (33), the sliding rods (310) are connected to the middle parts of the two first fixing blocks (39) in a sliding mode through guide sleeves, the clamping blocks (311) are fixed at one ends of the sliding rods (310) penetrating through the first fixing blocks (39), the trapezoidal grooves (312) are formed in the middle parts of the clamping blocks (311), the inserting rods (313) are symmetrically fixed at two ends of the T-shaped double-arc spray pipe (212), the inserting rods (313) are inserted into the trapezoidal grooves (312), the clamping plates (314) are fixed at one ends of the two sliding rods (310) far away from the clamping blocks (311), the utility model discloses a stop collar, including splint (314), slide bar (310), limiting ring (316), first spring (317) are equipped with to slide bar (310) outside cover, first spring (317) one end and limiting ring (316) fixed connection, and first spring (317) other end and a first fixed block (39) fixed connection.
3. The rotary type heat exchanger ash and scale online continuous cleaning device according to claim 1, wherein the adjusting device (22) comprises a second mounting plate (221), a second fixing block (222), a threaded rod (223) and a threaded sleeve (224), the second mounting plate (221) is connected to one side of the driving shell (21) in a sliding mode, the second fixing block (222) is symmetrically fixed to one end of the second mounting plate (221), the two second fixing blocks (222) are rotatably connected with the threaded rod (223) through bearings, one end of the threaded rod (223) is connected with the threaded sleeve (224) in a threaded mode, and one end of the threaded sleeve (224) is fixedly connected with the driving shell (21).
4. An online continuous cleaning device for ash and dirt of a rotary heat exchanger according to claim 3, wherein the side of the driving shell (21) close to the second mounting plate (221) is symmetrically fixed with slide rails (225), the side of the second mounting plate (221) is symmetrically fixed with track sliding blocks (226), and the track sliding blocks (226) are connected with the slide rails (225) in a sliding manner.
5. The on-line continuous cleaning device for ash and dirt of the rotary heat exchanger as claimed in claim 4, wherein a hexagonal knob (227) is fixed at one end of the threaded rod (223), and a hexagonal groove is formed in one side of the hexagonal knob (227).
6. The rotary heat exchanger ash and scale online continuous cleaning device according to claim 5, wherein the valve device (23) comprises a T-shaped plate (231), a valve body (232), an air inlet pipe (233), a fixed seat (234), a crank (235), a fixed sleeve (236), a second spring (237), a connecting rod (238), a fixed column (239), a clamping piece (2310), a blocking groove (2311), a fixed strip (2312) and a shifting column (2313), the T-shaped plate (231) is fixed at one end of the inner wall of the driving shell (21), the valve body (232) is fixed at the upper end of the T-shaped plate (231), the air outlet end of the valve body (232) is communicated with the inner pipe (211), the air inlet pipe (233) is fixed at the air inlet end of the valve body (232), the fixed seat (234) is fixed at the bottom of the valve body (232), and the crank (235) is rotatably connected with one end of the fixed seat, the crank (235) is in forked arrangement, the adjusting end of the valve main body (232) is in forked contact with the crank (235), a fixing sleeve (236) is sleeved on the outer side of the adjusting end of the valve main body (232), the fixing sleeve (236) is fixedly connected with the valve main body (232), a second spring (237) is sleeved on the outer side of the fixing sleeve (236), one end of the second spring (237) is fixedly connected with the fixing sleeve (236), the other end of the second spring (237) is fixedly connected with the adjusting end of the valve main body (232), the bottom of the crank (235) is rotatably connected with a connecting rod (238) through a shaft pin, one end of a T-shaped plate (231) is provided with a through hole, one end of the connecting rod (238) penetrates through the through hole to be fixed with a fixing column (239), one end of the fixing column (239) is rotatably connected with a clamping sheet (2310) through the shaft pin, a fixing strip (2312) is fixed to one end, close to the clamping sheet (2310), of the U-shaped sliding block (25), a shifting column (2313) is fixed to one end of the fixing strip (2312), and the shifting column (2313) is in sliding connection with the blocking groove (2311).
7. The rotary type heat exchanger ash and scale on-line continuous cleaning device according to claim 5, wherein mounting holes (2314) are equidistantly fixed on the surface of the fixing strip (2312), and the shifting column (2313) is fixedly connected with the mounting holes (2314).
8. The rotary heat exchanger ash and scale online continuous cleaning device according to claim 5, wherein the air preheater rotor (1) comprises a central heat pipe (11), heat dissipation fins (12) and baffles (13), the heat dissipation fins (12) are fixed on the outer side of the central heat pipe (11) at equal intervals, and the baffles (13) are symmetrically fixed on the outer sides of the plurality of heat dissipation fins (12).
9. A rotary heat exchanger ash and scale online continuous cleaning device according to claim 5, wherein the first servo motor (28) and the second servo motor (38) are both a speed reduction motor, a controller (4) is fixed on one side of the driving shell (21), and the first servo motor (28) and the second servo motor (38) are both electrically connected with the controller (4).
10. A rotary heat exchanger ash and scale on-line cleaning device according to claim 5, wherein a sliding seal is provided between the inner tube (211) and the sleeve (210).
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| CN202110211758.XA CN113007730B (en) | 2021-02-25 | 2021-02-25 | Rotary type heat exchanger ash and scale online continuous cleaning device |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07229694A (en) * | 1994-02-18 | 1995-08-29 | Hitachi Ltd | Robot for washing thin tube of heat exchanger |
| JPH08296834A (en) * | 1995-04-25 | 1996-11-12 | Babcock Hitachi Kk | Cleaning apparatus for matter adhering to heat exchanger tube |
| US20050138753A1 (en) * | 2003-12-29 | 2005-06-30 | Hufnagel James P. | Boiler tube cleanout system |
| CN103143575A (en) * | 2013-03-22 | 2013-06-12 | 中冶南方工程技术有限公司 | Spray pipe used for cleaning cold-rolling strip steel |
| CN204756963U (en) * | 2015-07-03 | 2015-11-11 | 华电国际电力股份有限公司技术服务中心 | Online water washing unit of ready -package air heater |
| 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 |
| CN209042425U (en) * | 2018-08-14 | 2019-06-28 | 莆田学院 | A kind of flue deashing device |
| CN110369407A (en) * | 2019-06-14 | 2019-10-25 | 华电电力科学研究院有限公司 | A kind of air preheater on-line cleaning device |
| CN211965269U (en) * | 2019-12-21 | 2020-11-20 | 吕式荣 | Livestock-raising is with timing retaining belt cleaning device |
| CN112212309A (en) * | 2020-11-06 | 2021-01-12 | 佛山市腾辉锅炉制造有限公司 | Energy-conserving efficient exhaust-heat boiler ash removal device |
| CN212512681U (en) * | 2020-06-01 | 2021-02-09 | 吉林同达传热工程技术有限公司 | Water spray cleaning mechanism of heat exchanger dirt cleaning device |
-
2021
- 2021-02-25 CN CN202110211758.XA patent/CN113007730B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07229694A (en) * | 1994-02-18 | 1995-08-29 | Hitachi Ltd | Robot for washing thin tube of heat exchanger |
| JPH08296834A (en) * | 1995-04-25 | 1996-11-12 | Babcock Hitachi Kk | Cleaning apparatus for matter adhering to heat exchanger tube |
| US20050138753A1 (en) * | 2003-12-29 | 2005-06-30 | Hufnagel James P. | Boiler tube cleanout system |
| CN103143575A (en) * | 2013-03-22 | 2013-06-12 | 中冶南方工程技术有限公司 | Spray pipe used for cleaning cold-rolling strip steel |
| CN204756963U (en) * | 2015-07-03 | 2015-11-11 | 华电国际电力股份有限公司技术服务中心 | Online water washing unit of ready -package air heater |
| 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 |
| CN209042425U (en) * | 2018-08-14 | 2019-06-28 | 莆田学院 | A kind of flue deashing device |
| CN110369407A (en) * | 2019-06-14 | 2019-10-25 | 华电电力科学研究院有限公司 | A kind of air preheater on-line cleaning device |
| CN211965269U (en) * | 2019-12-21 | 2020-11-20 | 吕式荣 | Livestock-raising is with timing retaining belt cleaning device |
| CN212512681U (en) * | 2020-06-01 | 2021-02-09 | 吉林同达传热工程技术有限公司 | Water spray cleaning mechanism of heat exchanger dirt cleaning device |
| CN112212309A (en) * | 2020-11-06 | 2021-01-12 | 佛山市腾辉锅炉制造有限公司 | Energy-conserving efficient exhaust-heat boiler ash removal device |
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| CN113007730B (en) | 2021-09-14 |
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