CN116498991A - Promotion reciprocating heat accumulation formula air heater - Google Patents
Promotion reciprocating heat accumulation formula air heater Download PDFInfo
- Publication number
- CN116498991A CN116498991A CN202310349707.2A CN202310349707A CN116498991A CN 116498991 A CN116498991 A CN 116498991A CN 202310349707 A CN202310349707 A CN 202310349707A CN 116498991 A CN116498991 A CN 116498991A
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- Prior art keywords
- air
- fixed
- pipe
- reciprocating
- rod
- Prior art date
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- 238000009825 accumulation Methods 0.000 title claims description 6
- 239000000779 smoke Substances 0.000 claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims description 27
- 230000001172 regenerating effect Effects 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 5
- 239000003546 flue gas Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000005485 electric heating Methods 0.000 claims description 4
- 239000007779 soft material Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 239000000428 dust Substances 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 244000309464 bull Species 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000003517 fume Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000208125 Nicotiana Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/01—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using means for separating solid materials from heat-exchange fluids, e.g. filters
-
- 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
- F28G3/00—Rotary appliances
- F28G3/04—Rotary appliances having brushes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The invention belongs to the technical field of air preheaters, in particular to a pushing reciprocating heat accumulating type air preheater, aiming at the problem that a blast pipe in the prior art is easy to rust a pipe due to large temperature difference between inlet and outlet ends, the invention provides a scheme which comprises a base arranged on the side face of a smoke exhaust pipe of a boiler, wherein the whole base is of a strip-shaped structure, a notch is formed in one side, close to the smoke exhaust pipe, of the base, two supporting seats are fixed on one side, far away from the smoke exhaust pipe, of the middle part of the upper surface of the base, the top ends of the two supporting seats are provided with reciprocating air supply mechanisms, each reciprocating air supply mechanism comprises an air supply pipe fixed at the top ends of the two supporting seats, and an end cover I and an end cover II are respectively fixed at two ends of the air supply pipe. The invention can not only lead the sucked air flow to be in direct contact with the high-heat smoke exhaust pipe, furthest utilize the heat of the smoke exhaust pipe, but also increase the contact time of the air flow and the smoke exhaust pipe in a limited height and improve the utilization rate of the residual heat.
Description
Technical Field
The invention relates to the technical field of air preheaters, in particular to a pushing reciprocating heat accumulating type air preheater.
Background
The air preheater of the boiler is a heating device for heating air entering the boiler by utilizing tail flue gas of the boiler; in the prior art, a multi-pipe type air inlet heating mode is adopted to heat the inlet air, but a large number of pipes are needed in the mode, the maintenance of each pipe in the later period is very costly, the pipes have a large temperature difference when cold air enters a hot air preheater, water vapor in high-temperature flue gas of a boiler can be condensed into water under the condition of being cold, SO2, SO3 and water in the flue gas react to generate sulfurous acid and sulfuric acid, and the sulfurous acid and the sulfuric acid have strong acidity and strong corrosiveness to metals, SO that the boiler air preheater has low-temperature corrosion at a cold air end.
The long-term low-temperature corrosion makes the metal pipe of the air preheater easily erode, and a large amount of air leakage is caused after the metal pipe is penetrated, so that the range of low-temperature corrosion is increased, and when one pipe of the air preheater is broken, other metal pipes are penetrated quickly. After a large amount of metal pipes are damaged, a large amount of air inlet is leaked into the flue gas to prevent the air supply of the boiler from being upward, the air introduction cannot be performed, the boiler is insufficiently combusted, the efficiency of the boiler is greatly reduced, and the burning loss of a mechanical part is greatly reduced; there is a need for a new type of air preheater that increases the amount of air intake while reducing corrosion.
Disclosure of Invention
The invention provides a pushing reciprocating heat accumulating type air preheater, which comprises a base arranged on the side surface of a smoke exhaust pipe of a boiler, wherein the whole base is of a strip-shaped structure, a notch is formed in one side, close to the smoke exhaust pipe, of the base, two supporting seats are fixed on one side, far away from the smoke exhaust pipe, of the middle part of the upper surface of the base, the top ends of the two supporting seats are provided with reciprocating type air supply mechanisms, the reciprocating type air supply mechanisms comprise air supply pipes fixed on the top ends of the two supporting seats, an end cover I and an end cover II are respectively fixed at two ends of the air supply pipes, exhaust pipes are respectively inserted on the end cover I and the end cover II, and one end, far away from the air supply pipes, of the two exhaust pipes is communicated with the same hot air outlet pipe; the outer wall of the circumference of the smoke exhaust pipe is wound with two spiral air grooves which are mutually staggered and are in a spiral structure, the bottom ends of the two spiral air grooves are respectively fixed with an end connecting piece, one ends of the end connecting pieces, which are far away from the spiral air grooves, are respectively communicated with heat-resistant hoses, one ends of the two heat-resistant hoses, which are close to the air supply barrel, are respectively sleeved with one-way valve pipes, the two one-way valve pipes are respectively inserted into the two ends of the air supply barrel, air flow passing through the one-way valve pipes can only enter the air supply barrel, the inside of the air supply barrel is connected with a sealed piston plate in a sliding manner, and one side, which is close to the end cover II, of the sealed piston plate is fixedly provided with a reciprocating ejector rod; through the spiral wind groove of two spiral laminating at the exhaust pipe outer wall that set up, not only can let the inhaled air current directly with the high-heat exhaust pipe contact, the heat of exhaust pipe has been utilized to the maximum extent, increase the air current in limited height moreover and exhaust the contact time of tobacco pipe, improve the utilization ratio to the waste heat.
Further set up in, two the whole of spiral wind groove is crooked cell type structure, and the notch of spiral wind groove is facing to the outer wall of discharging fume the pipe, and spiral wind groove welding is on the outer wall of discharging fume the pipe, improves the utilization ratio to the surplus heat of discharging fume the pipe, and in case discovery air leakage department can mend the leak through welded mode, and maintenance cost is low and corrosion resistance is strong.
The air inlet box pipes with cavities arranged in the air inlet box pipes are communicated with the top ends of the two spiral air grooves and are integrally formed into a cuboid structure, air inlet holes distributed in a staggered mode are formed in the side faces of the air inlet box pipes, and a filter screen plate is arranged on one side, close to the air inlet holes, of the air inlet box pipes; and the inside of the air inlet box pipe is provided with an electric heating wire; through the air inlet box pipe, not only can carry out simple filtration to the air that will inhale in the stove, can adjust the temperature of initial entering spiral wind inslot according to external temperature moreover to let the temperature of finally getting into in the stove invariable, increase the stability of in-furnace reaction.
The device is further arranged in that the air inlet end of the spiral air groove, namely one end of the air inlet box pipe is positioned at one end of the smoke exhaust pipe far away from the furnace body, namely the heat of smoke close to one end of the air inlet box pipe is lower than that of the other end; by the arrangement, the sucked air can be heated slowly, and acid corrosion aggravation caused by overlarge temperature difference is avoided.
The further setting is that the one end that is close to end cover two above the base is fixed with the motor mount, and the top of motor mount is fixed with gear motor and bearing frame respectively, the intermediate joint of bearing frame has slide bearing, and it is connected with the transmission shaft to rotate in the slide bearing, the both ends of transmission shaft are fixed with shaft coupling and rocker respectively, and the one end that the transmission shaft was kept away from to the rocker is provided with the connecting axle parallel with the output shaft, and the both ends of connecting axle cup joint respectively and are fixed with driven runner and second-stage bull stick, one side that gear motor was kept away from to the bearing frame is fixed with the stationary tooth band pulley, and the winding has same transfer rack between the circumference outer wall of stationary tooth band pulley and the outer wall of driven runner, the one end that the connecting axle was kept away from to the second-stage bull stick is fixed with movable hinge, and the other end grafting of movable hinge is on reciprocating ejector pin, through the second-stage bull stick that sets up, not only can increase reciprocating stroke of reciprocating ejector pin, and the stability of transmission has been increased.
The heat-resistant hose is further arranged in the middle of the heat-resistant hose, unidirectional air valve boxes are arranged in the middle of the heat-resistant hose, each unidirectional air valve box comprises an exhaust pipe and an air inlet end pipe which are inserted into the upper end and the lower end of each unidirectional air valve box, a spring baffle is fixed on the inner wall of each unidirectional air valve box, a compression spring is fixed on the lower surface of each spring baffle, and a sealing baffle matched with the diameter of the pipe orifice of each air inlet end pipe is fixed at the bottom end of each compression spring; through the unidirectional air valve box, air can be prevented from being sucked into the air supply barrel from the other heat-resistant hose when the sealed piston plate reciprocates, and the conveying efficiency of the air is improved.
The cleaning mechanism comprises a sliding rail guide rod which is fixed between the two guide rod brackets and is close to the top end and is of an arc-shaped structure, the two sliding rail guide rods are sleeved with one rotary sliding rail, the whole rotary sliding rail is of a circular ring structure, two brush rods which are symmetrical with each other are arranged in the rotary sliding rail, and bristles which are in contact with the outer wall of the spiral wind groove are arranged on one side of the brush rod close to the spiral wind groove; through setting up the brush-holder stud of pasting at two spiral wind groove outer walls, can in time clear up the outer wall of spiral wind groove when using, reduce the accumulation of dust in order to reduce the harmful substance aggravation corruption in the dust.
The brush rod is further arranged in that the top end of the brush rod is made of soft materials, and the top end of the brush rod is higher than the air inlet box pipe, so that an air inlet hole of the air inlet box pipe can be cleaned in the process of rotating.
The brush is characterized in that two round rods which are horizontally arranged and parallel to each other are fixed on the back surface of the brush rod near the middle part, guide sliding seats which are matched with the diameters of the round rods are respectively fixed on the upper side and the lower side of the rotary sliding rail, and a reset spring is arranged between the middle part of the back surface of the brush rod and the rotary sliding rail; the side of the brush rod with the brush hair can be tightly abutted against the outer wall of the spiral air duct.
The automatic transmission device is characterized in that a belt groove is formed in the circumferential outer wall of the rotary slide rail, which is close to the top end, a conveying rope is sleeved in the belt groove, a connecting rod is fixed at one end of the reciprocating ejector rod, which is far away from the air supply barrel, a rack push rod parallel to the reciprocating ejector rod is fixed at the end part of the connecting rod, an intermediate gear is arranged on the upper surface of the base, which is close to the guide rod support, two shaft lever sliding seats are fixed on the side surface of the guide rod support, which is close to the side of the intermediate gear, two shaft lever sliding seats are rotatably connected with a transmission rod, and a rotary wheel and a driven gear meshed with the intermediate gear are respectively fixed at the upper end and the lower end of the transmission rod, and the rotary wheel is in transmission connection with the rotary slide rail through the conveying rope; an auxiliary guide rail matched with the rack push rod is arranged on the base; through a series of transmission mechanisms, the rotating slide rail can be driven to rub and move reciprocally on the outer wall of the spiral air duct under the action of the reciprocating ejector rod, so that the cleaning work of the outer wall of the spiral air duct is realized.
The beneficial effects of the invention are as follows:
1. through the spiral wind groove of two spiral laminating at the exhaust pipe outer wall that set up, not only can let the inhaled air current directly with the high-heat exhaust pipe contact, the heat of exhaust pipe has been utilized to the maximum extent, increase the air current in limited height moreover and exhaust the contact time of tobacco pipe, improve the utilization ratio to the waste heat.
2. Through the air inlet box pipe, not only can carry out simple filtration to the air that will inhale in the stove, can adjust the temperature of initial entering spiral wind inslot according to external temperature moreover to let the temperature of finally getting into in the stove invariable, increase the stability of in-furnace reaction.
3. Through setting up the brush-holder stud of pasting at two spiral wind groove outer walls, can in time clear up the outer wall of spiral wind groove when using, reduce the accumulation of dust in order to reduce the harmful substance aggravation corruption in the dust.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a push reciprocating regenerative air preheater according to the present invention;
FIG. 2 is a side view of a push-to-reciprocate regenerative air preheater according to the present invention;
FIG. 3 is a rear perspective view of a push reciprocation regenerative air preheater in accordance with the present invention;
FIG. 4 is a schematic perspective view of a cleaning mechanism in a push reciprocating regenerative air preheater according to the present invention;
FIG. 5 is a partial cross-sectional view of a reciprocating air delivery mechanism in a push reciprocating regenerative air preheater in accordance with the present invention;
FIG. 6 is a schematic perspective view of a spiral air duct in a reciprocating regenerative air preheater according to the present invention;
fig. 7 is a cross-sectional view of a check valve box for pushing a reciprocating regenerative air preheater according to the present invention.
In the figure: 1. a base; 2. an end cover I; 3. an air supply tube; 4. a support base; 5. a motor fixing frame; 6. a speed reducing motor; 7. a bearing seat; 71. a connecting shaft; 72. a driven rotating wheel; 8. a rocker; 9. a rack push rod; 10. a transfer rope; 11. a rotary wheel; 12. a brush bar; 13. a smoke exhaust pipe; 14. a spiral wind groove; 15. an air inlet box pipe; 16. rotating the slide rail; 1601. pi Daicao; 17. a slide rail guide bar; 18. a guide rod bracket; 19. a hot air outlet pipe; 20. a one-way air valve box; 201. a spring baffle; 202. a compression spring; 203. a sealing baffle; 204. an air inlet end pipe; 21. an end cover II; 22. a connecting rod; 23. an auxiliary guide rail; 24. a shaft lever slide seat; 25. brushing; 26. a round bar; 27. a guide slide; 28. an air inlet hole; 29. a transmission rod; 30. a driven gear; 31. an intermediate gear; 32. a second-stage rotating rod; 33. a stationary toothed belt wheel; 34. a reciprocating ejector rod; 35. a heat resistant hose; 36. a sealed piston plate; 37. a one-way valve tube; 38. an end connector.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-7, a pushing reciprocating heat accumulating type air preheater comprises a base 1 arranged on the side surface of a smoke exhaust pipe 13 of a boiler, wherein the whole base 1 is of a strip-shaped structure, a notch is formed in one side, close to the smoke exhaust pipe 13, of the base 1, two supporting seats 4 are fixed on one side, far away from the smoke exhaust pipe 13, of the middle part of the upper surface of the base 1, the top ends of the two supporting seats 4 are provided with reciprocating air supply mechanisms, each reciprocating air supply mechanism comprises an air supply cylinder 3 fixed on the top ends of the two supporting seats 4, two ends of each air supply cylinder 3 are respectively fixed with an end cover 1 and an end cover two 21, exhaust pipes are respectively inserted on the end cover 1 and the end cover two 21, and one end, far away from the air supply cylinder 3, of each exhaust pipe is communicated with the same hot air outlet pipe 19; the circumference outer wall of the smoke exhaust pipe 13 is wound with two spiral air grooves 14 which are mutually staggered and are in a spiral structure, the bottom ends of the two spiral air grooves 14 are respectively fixed with an end connecting piece 38, one end, far away from the spiral air grooves 14, of each end connecting piece 38 is communicated with a heat-resistant hose 35, one ends, close to the air supply cylinder 3, of each heat-resistant hose 35 are respectively sleeved with a one-way valve pipe 37, the two one-way valve pipes 37 are respectively inserted at two ends of the air supply cylinder 3, air flow passing through the one-way valve pipes 37 can only enter the air supply cylinder 3, the inside of the air supply cylinder 3 is slidably connected with a sealed piston plate 36, and one side, close to the end cover two 21, of the sealed piston plate 36 is fixedly provided with a reciprocating ejector rod 34; through the spiral air grooves 14 which are formed in the outer wall of the smoke exhaust pipe 13 in a spiral mode, sucked air flow can be directly contacted with the high-heat smoke exhaust pipe 13, heat of the smoke exhaust pipe 13 is utilized to the greatest extent, contact time between the air flow and the smoke exhaust pipe 13 is prolonged in a limited height, and utilization rate of waste heat is improved.
In the invention, the whole of the two spiral air grooves 14 is of a curved groove structure, the notch of the spiral air groove 14 faces the outer wall of the smoke exhaust pipe 13, the spiral air groove 14 is welded on the outer wall of the smoke exhaust pipe 13, the utilization rate of the residual heat of the smoke exhaust pipe 13 is improved, and once the air leakage position is found, leakage can be repaired in a welding mode, so that the maintenance cost is low and the corrosion resistance is strong.
Referring to fig. 6, the top ends of the two spiral air grooves 14 are communicated with an air inlet box pipe 15 with a cavity formed in the whole into a cuboid structure, air inlet holes 28 distributed in a staggered manner are formed in the side surface of the air inlet box pipe 15, and a filter screen plate is arranged on one side, close to the air inlet holes 28, of the air inlet box pipe 15; and the inside of the air inlet box pipe 15 is provided with an electric heating wire; through the air inlet box pipe 15 that sets up, not only can carry out simple filtration to the air that will inhale in the stove, can adjust the temperature of initial entering spiral wind groove 14 in accordance with external temperature moreover to let the temperature of finally getting into in the stove invariable, increase the stability of in-furnace reaction.
In the invention, the air inlet end of the spiral air groove 14, namely one end of the air inlet box pipe 15, is positioned at one end of the smoke exhaust pipe 13 far away from the furnace body, namely the heat of smoke near one end of the air inlet box pipe 15 is lower than that of the other end; by the arrangement, the sucked air can be heated slowly, and acid corrosion aggravation caused by overlarge temperature difference is avoided.
Referring to fig. 5, a motor fixing frame 5 is fixed at one end, close to the end cover two 21, of the upper side of the base 1, a gear motor 6 and a bearing seat 7 are fixed at the top end of the motor fixing frame 5 respectively, a sliding bearing is clamped in the middle of the bearing seat 7, a transmission shaft is connected in the sliding bearing in a rotating manner, a coupler and a rocker 8 are respectively fixed at two ends of the transmission shaft, one end, far away from the transmission shaft, of the rocker 8 is provided with a connecting shaft 71 parallel to an output shaft, two ends of the connecting shaft 71 are respectively sleeved and fixed with a driven rotating wheel 72 and a second rotating rod 32, one side, far away from the gear motor 6, of the bearing seat 7 is fixed with a stationary toothed belt wheel 33, a same transmission rack is wound between the circumferential outer wall of the stationary toothed belt wheel 33 and the outer wall of the driven rotating wheel 72, one end, far away from the connecting shaft 71, is fixed with a movable hinge, and the other end of the movable hinge is spliced on a reciprocating ejector rod 34, and the reciprocating stroke of the reciprocating ejector rod 34 can be increased through the arranged second rotating rod 32.
Referring to fig. 7, unidirectional air valve boxes 20 are arranged in the middle of the heat-resistant hose 35, the unidirectional air valve boxes 20 comprise exhaust pipes and air inlet end pipes 204 which are inserted into the upper end and the lower end of the unidirectional air valve boxes 20, spring baffles 201 are fixed on the top ends of the air inlet end pipes 204 on the inner walls of the unidirectional air valve boxes 20, compression springs 202 are fixed on the lower surfaces of the spring baffles 201, and sealing baffles 203 which are matched with the diameters of pipe orifices of the air inlet end pipes 204 are fixed at the bottom ends of the compression springs 202; by the single-way valve box 20, the air is prevented from being sucked into the air barrel 3 from the other heat-resistant hose 35 when the sealed piston plate 36 reciprocates, and the conveying efficiency of the air is improved.
Referring to fig. 3-4, two mutually symmetrical guide rod brackets 18 are respectively fixed at two sides of the notch, a cleaning mechanism is arranged between the top ends of the two guide rod brackets 18, the cleaning mechanism comprises a slide rail guide rod 17 which is fixed between the two guide rod brackets 18 and is close to the top end and is in an arc-shaped structure, the two slide rail guide rods 17 are sheathed and rotated with the same rotary slide rail 16, the whole rotary slide rail 16 is in a circular ring structure, two mutually symmetrical brush rods 12 are arranged in the rotary slide rail 16, and bristles 25 which are in contact with the outer wall of the spiral wind groove 14 are arranged at one side of the brush rod 12 close to the spiral wind groove 14; through setting up the brush-holder stud 12 of pasting at two spiral wind grooves 14 outer walls, can in time clear up the outer wall of spiral wind groove 14 when using, reduce the accumulation of dust in order to reduce the harmful substance aggravation corruption in the dust.
In the invention, the top end of the brush rod 12 is made of soft materials, and the top end of the brush rod 12 is higher than the air inlet box tube 15, so that the air inlet hole 28 of the air inlet box tube 15 can be cleaned by the way when the brush rod rotates.
Referring to fig. 4, two round bars 26 which are horizontally arranged and parallel to each other are fixed near the middle of the back of the brush rod 12, guide sliding seats 27 which are matched with the diameters of the round bars 26 are respectively fixed on the upper side and the lower side of the rotary sliding rail 16, and a reset spring is arranged between the middle of the back of the brush rod 12 and the rotary sliding rail 16; the side of the brush bar 12 with the bristles 25 can be tightly abutted against the outer wall of the helical wind groove 14.
Referring to fig. 1 and 3, a belt groove 1601 is formed in the circumferential outer wall of the rotary slide rail 16 near the top end, a conveying rope 10 is sleeved in the belt groove 1601, a connecting rod 22 is fixed at one end of a reciprocating ejector rod 34 far away from the air barrel 3, a rack push rod 9 parallel to the reciprocating ejector rod 34 is fixed at the end of the connecting rod 22, an intermediate gear 31 is arranged on the upper surface of the base 1 near the guide rod bracket 18, two shaft lever sliding seats 24 are fixed on the side surface of the guide rod bracket 18 near the side where the intermediate gear 31 is located, a transmission rod 29 is rotatably connected to the shaft lever sliding seats 24, a rotary wheel 11 and a driven gear 30 meshed with the intermediate gear 31 are respectively fixed at the upper end and the lower end of the transmission rod 29, and the rotary wheel 11 is in transmission connection with the rotary slide rail 16 through the conveying rope 10; an auxiliary guide rail 23 matched with the rack push rod 9 is arranged on the base 1; through a series of transmission mechanisms, the rotating slide rail 16 can be driven to rub back and forth on the outer wall of the spiral wind groove 14 under the action of the reciprocating ejector rod 34, so that the cleaning work of the outer wall of the spiral wind groove is realized.
Before the device is used, the air inlet box pipe 15 is arranged, air to be sucked into the furnace is simply filtered, and the temperature of the air initially entering the spiral air channel 14 can be controlled by adjusting the temperature of the electric heating wire according to the temperature of the external air, so that the temperature of the air finally entering the furnace is constant, and the stability of the reaction in the furnace is improved; then under the action of the two spiral air grooves 14 which are spirally attached to the outer wall of the smoke exhaust pipe 13, not only the sucked air flow is directly contacted with the high-heat smoke exhaust pipe 13, the heat of the smoke exhaust pipe 13 is utilized to the greatest extent, but also the contact time of the air flow and the smoke exhaust pipe 13 is increased in a limited height, and the utilization rate of the waste heat is improved; the heated air is then continuously expelled by the action of the sealing piston plate 36, which reciprocates inside the barrel 3.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a promote reciprocating heat accumulation formula air heater, includes base (1) that sets up in boiler exhaust pipe (13) side, the whole of base (1) is rectangular shape structure, and one side that base (1) is close to exhaust pipe (13) opens jaggedly, a serial communication port, one side that exhaust pipe (13) was kept away from in base (1) upper surface middle part is fixed with two supporting seats (4), and the top of two supporting seats (4) is provided with reciprocating air supply mechanism, and reciprocating air supply mechanism is including being fixed in barrel (3) on two supporting seats (4) tops, the both ends of barrel (3) are fixed with end cover one (2) and end cover two (21) respectively, and all peg graft on end cover one (2) and the end cover two (21) and have the exhaust pipe, and the one end intercommunication that two exhaust pipes kept away from barrel (3) has same hot-blast play tuber pipe (19);
the circumference outer wall winding of exhaust pipe (13) has two spiral wind grooves (14) that are spiral helicla-like structure crisscross each other, and the bottom of two spiral wind grooves (14) all is fixed with end connection spare (38), end connection spare (38) keep away from the one end of spiral wind groove (14) all communicates and has heat-resisting hose (35), and the one end that two heat-resisting hose (35) are close to barrel (3) has all cup jointed check valve pipe (37), two check valve pipe (37) peg graft respectively at the both ends of barrel (3), the inside sliding connection of barrel (3) has sealed piston plate (36), and one side that sealed piston plate (36) is close to end cover two (21) is fixed with reciprocal ejector pin (34).
2. A push reciprocating regenerative air preheater as set forth in claim 1, wherein the entirety of two of said spiral air grooves (14) is of a curved groove-type structure, and the notches of the spiral air grooves (14) face the outer wall of the smoke exhaust pipe (13), and the spiral air grooves (14) are welded to the outer wall of the smoke exhaust pipe (13).
3. The pushing reciprocating heat accumulating type air preheater according to claim 1, wherein the top ends of the two spiral air grooves (14) are communicated with an air inlet box pipe (15) with a cavity arranged therein and a cuboid structure integrally, air inlet holes (28) are formed in the side face of the air inlet box pipe (15) in a staggered mode, and a filter screen plate is arranged on one side, close to the air inlet holes (28), of the air inlet box pipe (15); and the inside of the air inlet box tube (15) is provided with an electric heating wire.
4. A push reciprocating regenerative air preheater as set forth in claim 3, wherein the air inlet end of the spiral air duct (14), i.e. the end of the air inlet box tube (15), is located at the end of the smoke exhaust tube (13) far from the furnace body, i.e. the heat of the flue gas near the end of the air inlet box tube (15) is lower than the heat of the other end.
5. The pushing reciprocating regenerative air preheater according to claim 1, wherein one end, close to the end cover two (21), of the base (1) is fixed with a motor fixing frame (5), the top end of the motor fixing frame (5) is respectively fixed with a gear motor (6) and a bearing seat (7), a sliding bearing is clamped in the middle of the bearing seat (7), a transmission shaft is connected in the sliding bearing in a rotating manner, a coupler and a rocker (8) are respectively fixed at two ends of the transmission shaft, one end, far away from the transmission shaft, of the rocker (8) is provided with a connecting shaft (71) parallel to an output shaft, two ends of the connecting shaft (71) are respectively sleeved and fixed with a driven rotating wheel (72) and a secondary rotating rod (32), one side, far away from the gear motor (6), of the bearing seat (7) is fixed with a stationary toothed belt wheel (33), a same transmission rack is wound between the outer wall of the circumference of the stationary toothed belt wheel (33) and the outer wall of the driven rotating wheel (72), one end, far away from the connecting shaft (71), of the secondary rotating rod (32) is fixed with a movable hinge, and the other end of the movable hinge is spliced on the reciprocating ejector rod (34).
6. The pushing reciprocating regenerative air preheater according to claim 1, wherein the middle of the heat-resistant hose (35) is provided with unidirectional air valve boxes (20), the unidirectional air valve boxes (20) comprise exhaust pipes and air inlet end pipes (204) which are inserted into the upper end and the lower end of the unidirectional air valve boxes (20), the inner wall of the unidirectional air valve boxes (20) is positioned at the top end of the air inlet end pipe (204) and is fixedly provided with a spring baffle plate (201), the lower surface of the spring baffle plate (201) is fixedly provided with a compression spring (202), and the bottom end of the compression spring (202) is fixedly provided with a sealing baffle plate (203) which is matched with the pipe orifice diameter of the air inlet end pipe (204).
7. The pushing reciprocating heat accumulating type air preheater according to claim 1, wherein two sides of the notch are respectively fixed with mutually symmetrical guide rod brackets (18), a cleaning mechanism is arranged between the top ends of the two guide rod brackets (18), the cleaning mechanism comprises a slide rail guide rod (17) which is fixed between the two guide rod brackets (18) and is close to the top end and is in an arc-shaped structure, the two slide rail guide rods (17) are sheathed and rotated with one rotary slide rail (16), the whole body of the rotary slide rail (16) is in a circular structure, two mutually symmetrical brush rods (12) are arranged in the rotary slide rail (16), and bristles (25) which are in contact with the outer wall of the spiral wind groove (14) are arranged on one side of the brush rod (12) close to the spiral wind groove (14).
8. The pushing reciprocating regenerative air preheater as set forth in claim 7, wherein the top end of the brush bar (12) is made of soft material, and the top end of the brush bar (12) is higher than the air inlet box tube (15).
9. The pushing reciprocating heat accumulating type air preheater according to claim 1, wherein two round bars (26) which are horizontally arranged and parallel to each other are fixed near the middle of the back of the brush rod (12), guide sliding seats (27) which are matched with the diameters of the round bars (26) are respectively fixed on the upper side and the lower side of the rotary sliding rail (16), and a reset spring is arranged between the middle of the back of the brush rod (12) and the rotary sliding rail (16).
10. The pushing reciprocating regenerative air preheater according to claim 9, wherein a belt groove (1601) is formed in the circumferential outer wall of the rotating sliding rail (16) near the top end, a transmission rope (10) is sleeved in the belt groove (1601), a connecting rod (22) is fixed at one end of the reciprocating ejector rod (34) far away from the air supply barrel (3), a rack push rod (9) parallel to the reciprocating ejector rod (34) is fixed at the end of the connecting rod (22), an intermediate gear (31) is arranged on the upper surface of the base (1) near a guide rod bracket (18), two shaft lever sliding seats (24) are fixed on the side surface of the guide rod bracket (18) near the side of the intermediate gear (31), a transmission rod (29) is connected to the shaft lever sliding seats (24) in a rotating mode, a rotary wheel (11) and a driven gear (30) meshed with the intermediate gear (31) are respectively fixed at the upper end and the lower end of the transmission rod (29), and the rotary wheel (11) and the rotating sliding rail (16) are in a transmission mode through the transmission rope (10); an auxiliary guide rail (23) matched with the rack push rod (9) is arranged on the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310349707.2A CN116498991A (en) | 2023-04-04 | 2023-04-04 | Promotion reciprocating heat accumulation formula air heater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310349707.2A CN116498991A (en) | 2023-04-04 | 2023-04-04 | Promotion reciprocating heat accumulation formula air heater |
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| CN116498991A true CN116498991A (en) | 2023-07-28 |
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| CN202310349707.2A Pending CN116498991A (en) | 2023-04-04 | 2023-04-04 | Promotion reciprocating heat accumulation formula air heater |
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| CN113719850A (en) * | 2021-09-09 | 2021-11-30 | 丽水学院 | Boiler waste heat recovery cleaning device and using method |
| CN114294716A (en) * | 2022-01-10 | 2022-04-08 | 徐州科恒奥制冷设备有限公司 | Energy-saving device of enterprise intelligent air conditioning system |
| CN115143802A (en) * | 2022-07-12 | 2022-10-04 | 武汉圣琪顿机电设备有限公司 | Multistage circulating water-cooled cooling tower |
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|---|---|---|---|---|
| WO1986002140A1 (en) * | 1984-09-28 | 1986-04-10 | Vapor Corp | Air preheater for a compact boiler |
| CN101398264A (en) * | 2008-10-30 | 2009-04-01 | 唐子奉 | Auto descaling heat exchanger |
| CN207019099U (en) * | 2017-07-06 | 2018-02-16 | 山东科技大学 | A kind of air preheater |
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| CN212377994U (en) * | 2020-04-27 | 2021-01-19 | 安徽国博机电设备有限公司 | Organic waste gas catalytic combustion device |
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| CN113719850A (en) * | 2021-09-09 | 2021-11-30 | 丽水学院 | Boiler waste heat recovery cleaning device and using method |
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Address after: No. 973, Changjiang Road, Jiangyin City, Wuxi City, Jiangsu Province, 214400 Applicant after: JIANGYIN JINTONG PETROCHEMICAL EQUIPMENT CO.,LTD. Address before: No. 973 Changjiang Road, Jiangyin City, Yangzhou City, Jiangsu Province, 214400 Applicant before: JIANGYIN JINTONG PETROCHEMICAL EQUIPMENT CO.,LTD. |