CN115752024B - High-energy-efficiency falling film type heat exchanger and use method thereof - Google Patents
High-energy-efficiency falling film type heat exchanger and use method thereof Download PDFInfo
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- CN115752024B CN115752024B CN202211431913.XA CN202211431913A CN115752024B CN 115752024 B CN115752024 B CN 115752024B CN 202211431913 A CN202211431913 A CN 202211431913A CN 115752024 B CN115752024 B CN 115752024B
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- 239000011552 falling film Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 167
- 238000003860 storage Methods 0.000 claims abstract description 94
- 239000007788 liquid Substances 0.000 claims abstract description 83
- 238000010438 heat treatment Methods 0.000 claims abstract description 77
- 238000007789 sealing Methods 0.000 claims description 45
- 238000009413 insulation Methods 0.000 claims description 37
- 238000003466 welding Methods 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 2
- 238000002955 isolation Methods 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 description 6
- 238000007599 discharging Methods 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000037433 frameshift Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention discloses a falling film type heat exchanger with high energy efficiency and a use method thereof, and relates to the technical field of heat exchangers. According to the falling film type heat exchanger with high energy efficiency and the application method, the liquid is blocked by the water stop plate and the flow blocking plate, the flow speed of the liquid in the heat exchange tube is reduced, the flow speed of the liquid between the storage tube and the heat exchange bin is reduced, meanwhile, the first heat insulating plate and the blocking plate block heating steam, the heating steam flows into the upper part of the second heat insulating plate, the second heat insulating plate and the blocking plate block the heating steam, the heating steam flows into the bottom of the heat exchange bin through the water through holes and the second water through holes, the heating steam at the bottom of the heat exchange bin flows into the right side of the third heat insulating plate through the third water through holes, so that the flow speed of the liquid and the heating steam can be slowed down by the water stop plate and the blocking plate, the heat time of the liquid in the heat exchange tube and the heat time of the liquid in the storage tube and the heat exchange bin for absorbing the heating steam in the heat exchange bin is increased, and the heat exchange effect is improved.
Description
Technical Field
The invention relates to the technical field of heat exchangers, in particular to a falling film type heat exchanger with high energy efficiency and a use method thereof.
Background
The heat exchanger is a device for transferring part of heat of hot fluid to cold fluid, also called heat exchanger, which is a common device for chemical industry, petroleum, power, food and other industrial departments, plays an important role in production, and can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like in chemical production, so that the application is wider. Heat exchangers are of many kinds, but can be basically divided into three main kinds according to the principle and mode of heat exchange of cold and hot fluid: dividing wall, hybrid, and regenerative.
As disclosed in chinese patent CN215176192U, a falling film heat exchanger with high energy efficiency is disclosed, in which gas is distributed on two sides of a heat exchange tube, so that a film can be uniformly and rapidly formed on the surface, and the heat exchange effect is better and more uniform.
In the above patent, although gas can be distributed on two sides of the heat exchange tube, a film can be uniformly and rapidly formed on the surface, when the liquid discharge valve is opened, the flow speed of feed liquid and heating steam is high, so that the heat exchange efficiency of the heat exchange tube is low.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the falling film type heat exchanger with high energy efficiency and the use method thereof, and solves the problems of high flow speed of feed liquid and heating steam and low heat exchange efficiency of a heat exchange tube.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a falling film heat exchanger of high energy efficiency, includes the support base, the top fixedly connected with storage tube of support base, the front side of storage tube passes through the first sealed lid of bolt fixedly connected with, the rear side of storage tube passes through the sealed lid of bolt fixedly connected with second, the inside of storage tube is through fixed block fixedly connected with heat transfer mechanism, heat transfer mechanism's inside fixedly connected with water proof mechanism.
The invention is further provided with: the waterproof mechanism comprises a heat exchange tube, a mounting groove is formed in the heat exchange tube, a welding frame is connected to the inside of the mounting groove in a sliding mode, a plurality of waterproof plates are sequentially and fixedly connected to the inside of the welding frame from front to back, a heating hole is formed in the outer portion of each waterproof plate, a water flowing hole is formed in the bottom of each waterproof plate, and the outer portion of each waterproof plate is connected with the inside of the heat exchange tube in a sliding mode.
The invention is further provided with: the outside of heat transfer storehouse just is located the front side of second inlet tube and second outlet pipe and has been seted up three group's sliding tray, three group the inside sliding connection of sliding tray has the mounting bracket, the outside of mounting bracket is from preceding back fixedly connected with spoiler in proper order, the outside of spoiler and the inside sliding connection of storage tube.
Through adopting above-mentioned technical scheme, through the bolt between rotation storage tube and the second sealed lid, the bolt between storage tube and the first sealed lid, remove the front and back both ends of storage tube with the sealed lid of first sealed lid and second, expose the front and back both ends of storage tube, the staff shifts out welding frame and mounting bracket from the inside of mounting groove and sliding tray, make the welding frame shift out the riser from the inside of heat transfer tube, the mounting bracket shifts out the spoiler from between storage tube and the heat transfer storehouse, let the staff clear up spoiler and riser, can reduce the outside incrustation scale of spoiler and riser like this, improve spoiler and riser heat conduction efficiency, improve heat exchange efficiency.
The invention is further provided with: the heat exchange mechanism comprises a heat exchange bin, a first heat insulation plate is fixedly connected to the inside of the heat exchange bin, a first water passing hole is formed in the front side of the top of the first heat insulation plate, a second heat insulation plate is fixedly connected to the inside of the heat exchange bin and located below the first heat insulation plate, a second water passing hole is formed in the rear side of the top of the second heat insulation plate, a third heat insulation plate is fixedly connected to the inside of the heat exchange bin and located on the right side of the first heat insulation plate and the second heat insulation plate, a third water passing hole is formed in the front side of the bottom of the third heat insulation plate, and a baffle plate is fixedly connected to the top of the first heat insulation plate and the top and the bottom of the second heat insulation plate.
Through adopting above-mentioned technical scheme, let riser and spoiler block the feed liquid, reduce the velocity of feed liquid flowing in the heat exchange tube inside, reduce the velocity of flow of feed liquid between storage tube and heat exchange storehouse, first heat insulating board and baffle block heating steam simultaneously, heating steam passes through water hole and first water hole, flow into the top of second heat insulating board, second heat insulating board and baffle block heating steam, heating steam flows into the bottom in heat exchange storehouse through water hole and second water hole, the heating steam of heat exchange storehouse bottom flows into the right side of third heat insulating board through the third water hole, can let riser like this, spoiler and baffle slow down the velocity of flow of feed liquid and heating steam, increase the inside feed liquid of heat exchange tube and the feed liquid between storage tube and the heat exchange storehouse and absorb the heat time of heat exchange storehouse inside heating steam, improve the heat transfer effect.
The invention is further provided with: the top of the front side of the first sealing cover is communicated with a first water outlet pipe,
the top of the front side of the first sealing cover and the lower part of the first water outlet pipe are provided with a first water outlet valve, and the bottom of the rear side of the second sealing cover is communicated with a first water inlet pipe.
The invention is further provided with: the rear side intercommunication at storage tube top has the second inlet tube, the delivery port of second inlet tube runs through and extends to the inside of heat transfer storehouse, the second drain valve is installed to the bottom of storage tube, and the delivery port of second drain valve runs through and extends to the inside of heat transfer storehouse, the outside of storage tube just is located the right side intercommunication of second inlet tube and has the second outlet pipe, the water inlet of second outlet pipe runs through and extends to the inside of heat transfer storehouse.
The invention is further provided with: the outside of first outlet pipe installs first valve, the outside of second outlet pipe installs the second valve, the outside fixedly connected with filter component of first inlet tube and second inlet tube.
The invention is further provided with: the inside of baffle plate and the outside fixed connection of heat exchange tube, the limbers have been seted up to the outside of baffle plate and be located one side of heat exchange tube, the both ends of heat exchange tube run through and extend to the front and back both sides of heat exchange storehouse.
The invention is further provided with: the filter component comprises a filter pipe, wherein a plug is connected with the filter pipe through internal threads, a support frame is fixedly connected with the outside of the plug and positioned in the filter pipe, and a filter screen is fixedly connected with the outside of the support frame and positioned in the filter pipe.
Through adopting above-mentioned technical scheme, with the inside of the filter tube of external heating steam introduction second inlet tube top, the inside of the filter tube of external feed liquid introduction first inlet tube top again can absorb the impurity in heating steam and the feed liquid through the filter screen like this, reduce the impurity that gets into inside heating steam and the feed liquid of storage tube, first sealed lid and the sealed lid of second, reduce the production of incrustation scale, increase heat exchanger heat transfer life cycle.
Through adopting above-mentioned technical scheme, after the inside feed liquid of storage tube and heating steam are arranged, rotate the end cap, take out the end cap from the inside of filter tube, let the outside filter screen of staff clearance or change support frame, improve the efficiency of filter screen clearance or change.
The invention is further provided with: the bottom of the filter tube above the storage tube is fixedly connected with the outside of the first water inlet tube, and the bottom of the filter tube at the rear side of the second sealing cover is fixedly connected with the outside of the second water inlet tube.
The invention also discloses a use method of the falling film heat exchanger with high energy efficiency, which comprises the following steps:
step one, heat exchange preparation: the external heating steam pipe is communicated with the filter pipe above the second water inlet pipe, the external material liquid pipe is communicated with the filter pipe above the first water inlet pipe, the first valve and the second valve are rotated, and the first water outlet pipe and the second water outlet pipe are closed;
step two, cold heating steam inflow: after the first water outlet pipe and the second water outlet pipe are closed, external heating steam flows into the heat exchange bin through the filter pipe above the second water inlet pipe and the second water inlet pipe, external feed liquid flows into the second sealing cover through the filter pipe above the first water inlet pipe and the first water inlet pipe, and feed liquid in the second sealing cover flows into the heat exchange pipe and between the storage pipe and the heat exchange bin respectively;
step three, falling film heat exchange: when the feed liquid in the second sealing cover flows into the heat exchange tube, the water stop plate stops the feed liquid to reduce the flow speed of the feed liquid in the heat exchange tube, and meanwhile, the feed liquid flows in the heat exchange tube through the heat pass holes and the water flow holes, when the feed liquid in the second sealing cover flows in between the storage tube and the heat exchange bin, the flow speed of the feed liquid in the storage tube and the heat exchange bin is reduced, when the heating steam flows into the heat exchange bin, the first heat insulation plate and the baffle plate stop the heating steam, the heating steam flows into the upper part of the second heat insulation plate through the water flow holes and the first water flow holes, the second heat insulation plate and the baffle plate stop the heating steam, the heating steam at the bottom of the heat exchange bin flows into the right side of the third heat insulation plate through the third water flow holes, and the feed liquid in the heat exchange tube and the feed liquid between the storage tube and the heat exchange bin absorb the heat of the heating steam in the heat exchange bin;
step four, cold heating steam is discharged outwards: rotating the first valve and the second valve, opening the first water outlet pipe and the second water outlet pipe, discharging the heated material liquid in the storage pipe from the first water outlet pipe, discharging the heated steam cooled in the heat exchange bin from the second water outlet pipe, opening the first drain valve and the second drain valve, discharging the material liquid in the storage pipe by the first drain valve, and discharging the liquefied steam in the heat exchange bin by the second drain valve;
step five, heat exchange cleaning: after the feed liquid and the heating steam in the storage tube are discharged, the bolts between the storage tube and the second sealing cover are rotated, the bolts between the storage tube and the first sealing cover are removed from the front end and the rear end of the storage tube, the front end and the rear end of the storage tube are exposed, the welding frame and the mounting frame are removed from the mounting groove and the sliding groove by workers, the waterproof board is removed from the heat exchange tube by the welding frame, the baffle board is removed from the storage tube and the heat exchange bin by the mounting frame, the baffle board and the waterproof board are cleaned by the workers, the plug is rotated, the plug is taken out from the filter tube, and the filter screen outside the support frame is cleaned by the workers.
The invention provides a falling film type heat exchanger with high energy efficiency and a use method thereof. The beneficial effects are as follows:
(1) According to the falling film type heat exchanger with high energy efficiency and the use method, external heating steam is introduced into the heat exchange bin through the second water inlet pipe, external feed liquid is introduced into the heat exchange tube through the first water inlet pipe and between the storage tube and the heat exchange bin, the water stop plate and the baffle plate block the feed liquid, the flow speed of the feed liquid in the heat exchange tube is reduced, the flow speed of the feed liquid between the storage tube and the heat exchange bin is reduced, meanwhile, the first heat insulating plate and the baffle plate block the heating steam, the heating steam flows into the top of the second heat insulating plate through the water through holes and the first water through holes, the second heat insulating plate and the baffle plate block the heating steam, the heating steam at the bottom of the heat exchange bin flows into the right side of the third heat insulating plate through the third water through holes, so that the flow speed of the feed liquid and the heating steam can be slowed down by the water stop plate, the baffle plate and the baffle plate, the heat time of the feed liquid in the heat exchange tube and the heat absorption heat exchange bin between the storage tube and the feed liquid in the heat exchange tube is increased, and the heat exchange bin is improved, and the heat exchange effect is improved.
(2) According to the falling film type heat exchanger with high energy efficiency and the application method, through rotating the bolt between the storage tube and the second sealing cover, the first sealing cover and the second sealing cover are moved away from the front end and the rear end of the storage tube through the bolt between the storage tube and the first sealing cover, the front end and the rear end of the storage tube are exposed, the welding frame and the mounting frame are moved away from the inside of the mounting groove and the sliding groove by workers, the waterproof plate is moved away from the inside of the heat exchange tube by the welding frame, the baffle plate is moved away from the space between the storage tube and the heat exchange bin by the mounting frame, the baffle plate and the waterproof plate are cleaned by workers, so that scale on the outside of the baffle plate and the waterproof plate can be reduced, the heat conduction efficiency of the baffle plate and the waterproof plate is improved, and the heat exchange efficiency is improved.
(3) According to the falling film type heat exchanger with high energy efficiency and the application method, external heating steam is introduced into the filter pipe above the second water inlet pipe, and external feed liquid is introduced into the filter pipe above the first water inlet pipe, so that impurities in the heating steam and the feed liquid can be absorbed through the filter screen, the impurities entering the storage pipe, the first sealing cover and the second sealing cover and used for heating the steam and the feed liquid are reduced, scale is reduced, and the heat exchange service cycle of the heat exchanger is prolonged.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a storage tube according to the present invention;
FIG. 3 is a schematic view of the heat exchange cartridge of the present invention;
FIG. 4 is a cross-sectional view of a storage tube of the present invention;
FIG. 5 is a schematic view of a heat exchange mechanism according to the present invention;
FIG. 6 is a schematic view of a second heat shield according to the present invention;
FIG. 7 is a schematic view of the structure of the water barrier of the present invention;
fig. 8 is a schematic view of the structure of the filter assembly of the present invention.
In the figure, 1, a supporting base; 2. a storage tube; 3. a first sealing cover; 4. a second sealing cover; 5. a heat exchange mechanism; 6. a water-blocking mechanism; 7. a heat exchange tube; 8. a mounting groove; 9. a welding frame; 10. a water-stop plate; 11. a via hole; 12. a water flow hole; 13. a heat exchange bin; 14. a first heat shield; 15. a first water passing hole; 16. a second heat shield; 17. a second water passing hole; 18. a third heat shield; 19. a third water passing hole; 20. a baffle plate; 21. a first water outlet pipe; 22. a first water inlet pipe; 23. a second water inlet pipe; 24. a second water outlet pipe; 25. a first valve; 26. a second valve; 27. a filter assembly; 28. a water through hole; 29. a filter tube; 30. a plug; 31. a support frame; 32. a filter screen; 33. a sliding groove; 34. a mounting frame; 35. a flow blocking plate.
Description of the embodiments
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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-8, the embodiment of the invention provides a technical scheme: the utility model provides a falling film heat exchanger of high efficiency, includes support base 1, support the top fixedly connected with storage tube 2 of base 1, the front side of storage tube 2 passes through the first sealed lid 3 of bolt fixedly connected with, the rear side of storage tube 2 passes through the sealed lid 4 of bolt fixedly connected with second, the inside of storage tube 2 is through fixed block fixedly connected with heat transfer mechanism 5, the inside fixedly connected with water proof mechanism 6 of heat transfer mechanism 5.
As the preferred scheme, as shown in FIG. 7, the water-proof mechanism 6 comprises a heat exchange tube 7, a mounting groove 8 is formed in the heat exchange tube 7, a welding frame 9 is connected in the mounting groove 8 in a sliding manner, a plurality of water-proof plates 10 are sequentially and fixedly connected in the welding frame 9 from front to back, a heat-proof hole 11 is formed in the outer portion of each water-proof plate 10, a water flow hole 12 is formed in the bottom of each water-proof plate 10, and the outer portion of each water-proof plate 10 is connected with the inner portion of the heat exchange tube 7 in a sliding manner.
Further, three groups of sliding grooves 33 are formed in the outer portion of the heat exchange bin 13 and located on the front sides of the second water inlet pipe 23 and the second water outlet pipe 24, the inner portions of the three groups of sliding grooves 33 are connected with a mounting frame 34 in a sliding mode, flow blocking plates 35 are fixedly connected to the outer portion of the mounting frame 34 from front to back in sequence, and the outer portion of the flow blocking plates 35 are connected with the inner portion of the storage tube 2 in a sliding mode.
Further, the material of the water stop plate 10 and the flow stop plate 35 is aluminum alloy material, and the material of the heat exchange tube 7 is aluminum material, so that the heat conduction efficiency of the water stop plate 10, the flow stop plate 35 and the heat exchange tube 7 is improved.
Further, through the bolt between the storage tube 2 and the second sealing cover 4, the bolt between the storage tube 2 and the first sealing cover 3 moves the first sealing cover 3 and the second sealing cover 4 away from the front end and the rear end of the storage tube 2, the front end and the rear end of the storage tube 2 are exposed, the welding frame 9 and the mounting frame 34 are moved out of the mounting groove 8 and the sliding groove 33 by workers, the waterproof board 10 is moved out of the heat exchange tube 7 by the welding frame 9, the baffle 35 is moved out of the heat exchange bin 13 by the mounting frame 34, and the baffle 35 and the waterproof board 10 are cleaned by workers, so that scale on the outer parts of the baffle 35 and the waterproof board 10 can be reduced, the heat conduction efficiency of the baffle 35 and the waterproof board 10 can be improved, and the heat exchange efficiency can be improved.
5-6, the heat exchange mechanism 5 comprises a heat exchange bin 13, a first heat insulation plate 14 is fixedly connected to the inside of the heat exchange bin 13, a first water passing hole 15 is formed in the front side of the top of the first heat insulation plate 14, a second heat insulation plate 16 is fixedly connected to the inside of the heat exchange bin 13 and located below the first heat insulation plate 14, a second water passing hole 17 is formed in the rear side of the top of the second heat insulation plate 16, a third heat insulation plate 18 is fixedly connected to the inside of the heat exchange bin 13 and located on the right sides of the first heat insulation plate 14 and the second heat insulation plate 16, a third water passing hole 19 is formed in the front side of the bottom of the third heat insulation plate 18, and a baffle 20 is fixedly connected to the top of the first heat insulation plate 14 and both the top and the bottom of the second heat insulation plate 16.
Further, the inside of the baffle plate 20 is fixedly connected with the outside of the heat exchange tube 7, the water through holes 28 are formed in the outside of the baffle plate 20 and located on one side of the heat exchange tube 7, and two ends of the heat exchange tube 7 penetrate through and extend to the front side and the rear side of the heat exchange bin 13.
Further, the first water passing hole 15, the second water passing hole 17, the third water passing hole 19 and the water passing hole 28 are provided with blocking films inside, and the blocking films slow down the flow of the heating steam.
Further, the heat exchanging bin 13 is made of aluminum.
Further, external heating steam is introduced into the heat exchange bin 13 through the second water inlet pipe 23, external feed liquid is introduced into the heat exchange tube 7 through the first water inlet pipe 22 and between the storage tube 2 and the heat exchange bin 13, the water stop plate 10 and the baffle 35 stop the feed liquid, the flow speed of the feed liquid in the heat exchange tube 7 is reduced, the flow speed of the feed liquid between the storage tube 2 and the heat exchange bin 13 is reduced, meanwhile, the first heat insulating plate 14 and the baffle 20 stop the heating steam, the heating steam flows into the top of the second heat insulating plate 16 through the water through holes 28 and the first water through holes 15, the second heat insulating plate 16 and the baffle 20 stop the heating steam, the heating steam flows into the bottom of the heat exchange bin 13 through the water through holes 28 and the second water through holes 17, and the heating steam at the bottom of the heat exchange bin 13 flows into the right side of the third heat insulating plate 18 through the third water through holes 19, so that the flow speed of the feed liquid and the heating steam can be slowed down by the water stop plate 10, the baffle 35 and the baffle 20, the flow speed of the feed liquid in the heat exchange tube 7 and the heat time of the feed liquid heated in the heat exchange bin 13 between the storage tube 2 and the heat exchange bin 13 is increased, and the heat time of the heating steam in the feed liquid inside the heat exchange bin 13 is increased, and the heat exchange effect is improved.
Further, the top of the front side of the first sealing cover 3 is communicated with a first water outlet pipe 21, a first water outlet valve is installed below the top of the front side of the first sealing cover 3 and positioned below the first water outlet pipe 21, and the bottom of the rear side of the second sealing cover 4 is communicated with a first water inlet pipe 22.
Further, the rear side at the top of the storage tube 2 is communicated with a second water inlet tube 23, a water outlet of the second water inlet tube 23 penetrates through and extends to the inside of the heat exchange bin 13, a second drain valve is installed at the bottom of the storage tube 2, a water outlet of the second drain valve penetrates through and extends to the inside of the heat exchange bin 13, the outside of the storage tube 2 is communicated with a second water outlet tube 24 on the right side of the second water inlet tube 23, and a water inlet of the second water outlet tube 24 penetrates through and extends to the inside of the heat exchange bin 13.
Further, the external heating steam pipe is communicated with the filter pipe 29 above the second water inlet pipe 23, and the external material liquid pipe is communicated with the filter pipe 29 above the first water inlet pipe 22.
Further, a first valve 25 is installed outside the first water outlet pipe 21, a second valve 26 is installed outside the second water outlet pipe 24, and a filter assembly 27 is fixedly connected to the outside of the first water inlet pipe 22 and the second water inlet pipe 23.
As a preferred scheme, as shown in fig. 8, the filter assembly 27 comprises a filter tube 29, a plug 30 is connected to the inner thread of the filter tube 29, a supporting frame 31 is fixedly connected to the outer part of the plug 30 and positioned in the filter tube 29, and a filter screen 32 is fixedly connected to the outer part of the supporting frame 31 and positioned in the filter tube 29.
Further, by introducing external heating steam into the filter tube 29 above the second water inlet tube 23 and introducing external feed liquid into the filter tube 29 above the first water inlet tube 22, impurities in the heating steam and the feed liquid can be absorbed through the filter screen 32, impurities in the heating steam and the feed liquid entering the storage tube 2, the first sealing cover 3 and the second sealing cover 4 are reduced, scale is reduced, and the heat exchange service cycle of the heat exchanger is prolonged.
Further, after the material liquid and the heating steam in the storage tube 2 are exhausted, the plug 30 is rotated, the plug 30 is taken out from the filter tube 29, the filter screen 32 outside the support frame 31 is cleaned or replaced by a worker, and the cleaning or replacing efficiency of the filter screen 32 is improved.
The invention is further provided with: the bottom of the filter tube 29 above the storage tube 2 is fixedly connected with the outside of the first water inlet tube 22, and the bottom of the filter tube 29 at the rear side of the second sealing cover 4 is fixedly connected with the outside of the second water inlet tube 23.
The application method of the falling film heat exchanger with high energy efficiency comprises the following steps:
step one, heat exchange preparation: the external heating steam pipe is communicated with a filter pipe 29 above the second water inlet pipe 23, the external material liquid pipe is communicated with the filter pipe 29 above the first water inlet pipe 22, and the first valve 25 and the second valve 26 are rotated to close the first water outlet pipe 21 and the second water outlet pipe 24;
step two, cold heating steam inflow: after the first water outlet pipe 21 and the second water outlet pipe 24 are closed, external heating steam flows into the heat exchange bin 13 through the filter pipe 29 above the second water inlet pipe 23 and the second water inlet pipe 23, external feed liquid flows into the second sealing cover 4 through the filter pipe 29 above the first water inlet pipe 22 and the first water inlet pipe 22, and feed liquid in the second sealing cover 4 flows into the heat exchange tube 7 and between the storage tube 2 and the heat exchange bin 13 respectively;
step three, falling film heat exchange: when the feed liquid in the second sealing cover 4 flows into the heat exchange tube 7, the water stop plate 10 stops the feed liquid to reduce the flow speed of the feed liquid in the heat exchange tube 7, and simultaneously the feed liquid flows in the heat exchange tube 7 through the through holes 11 and the water flow holes 12, when the feed liquid in the second sealing cover 4 flows between the storage tube 2 and the heat exchange bin 13, the flow speed of the feed liquid between the storage tube 2 and the heat exchange bin 13 is reduced, when the heating steam flows into the heat exchange bin 13, the first heat insulating plate 14 and the baffle plate 20 stop the heating steam, the heating steam flows into the upper part of the second heat insulating plate 16 through the water through holes 28 and the first water through holes 15, the second heat insulating plate 16 and the baffle plate 20 stop the heating steam, the heating steam flows into the bottom of the heat exchange bin 13 through the water through holes 28 and the second water through holes 17, the heating steam at the bottom of the heat exchange bin 13 flows into the right side of the third heat insulating plate 18 through the third water holes 19, and the feed liquid in the heat exchange tube 7 and the feed liquid between the storage tube 2 and the heat exchange bin 13 absorbs the heat of the heating steam in the heat exchange bin 13;
step four, cold heating steam is discharged outwards: the first valve 25 and the second valve 26 are rotated, the first water outlet pipe 21 and the second water outlet pipe 24 are opened, the heated material liquid steam in the storage pipe 2 is discharged from the first water outlet pipe 21, the heated steam in the heat exchange bin 13 after cooling is discharged from the second water outlet pipe 24, the first water discharge valve and the second water discharge valve are opened, the material liquid in the storage pipe 2 is discharged by the first water discharge valve, and the liquefied steam in the heat exchange bin 13 is discharged by the second water discharge valve;
step five, heat exchange cleaning: after the material liquid and the heating steam in the storage tube 2 are discharged, the bolts between the storage tube 2 and the second sealing cover 4 are rotated, the bolts between the storage tube 2 and the first sealing cover 3 are removed from the front end and the rear end of the storage tube 2, the front end and the rear end of the storage tube 2 are exposed, the welding frame 9 and the mounting frame 34 are removed from the inside of the mounting groove 8 and the sliding groove 33 by workers, the waterproof board 10 is removed from the inside of the heat exchange tube 7 by the welding frame 9, the baffle 35 is removed from the space between the storage tube 2 and the heat exchange bin 13 by the mounting frame 34, the baffle 35 and the waterproof board 10 are cleaned by the workers, the plug 30 is rotated, the plug 30 is taken out from the inside of the filter tube 29, and the filter screen 32 outside the support frame 31 is cleaned by the workers.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a falling film heat exchanger of high energy efficiency, includes support base (1), its characterized in that: the top of the support base (1) is fixedly connected with a storage tube (2), the front side of the storage tube (2) is fixedly connected with a first sealing cover (3) through a bolt, the rear side of the storage tube (2) is fixedly connected with a second sealing cover (4) through a bolt, the inside of the storage tube (2) is fixedly connected with a heat exchange mechanism (5) through a fixed block, and the inside of the heat exchange mechanism (5) is fixedly connected with a water isolation mechanism (6);
the waterproof mechanism (6) comprises a heat exchange tube (7), an installation groove (8) is formed in the heat exchange tube (7), a welding frame (9) is connected in the installation groove (8) in a sliding mode, a plurality of waterproof plates (10) are sequentially and fixedly connected in the welding frame (9) from front to back, a heat exchange hole (11) is formed in the outer portion of each waterproof plate (10), a water flow hole (12) is formed in the bottom of each waterproof plate (10), and the outer portion of each waterproof plate (10) is connected with the inner portion of the heat exchange tube (7) in a sliding mode;
the heat exchange mechanism (5) comprises a heat exchange bin (13), a first heat insulation plate (14) is fixedly connected to the inside of the heat exchange bin (13), a first water passing hole (15) is formed in the front side of the top of the first heat insulation plate (14), a second heat insulation plate (16) is fixedly connected to the inside of the heat exchange bin (13) and below the first heat insulation plate (14), a second water passing hole (17) is formed in the rear side of the top of the second heat insulation plate (16), a third heat insulation plate (18) is fixedly connected to the inside of the heat exchange bin (13) and the right side of the first heat insulation plate (14) and the second heat insulation plate (16), a third water passing hole (19) is formed in the front side of the bottom of the third heat insulation plate (18), and a baffle plate (20) is fixedly connected to the top of the first heat insulation plate (14) and the top and the bottom of the second heat insulation plate (16).
The rear side of the top of the storage tube (2) is communicated with a second water inlet tube (23), a water outlet of the second water inlet tube (23) penetrates through and extends to the inside of the heat exchange bin (13), a second drain valve is installed at the bottom of the storage tube (2), a water outlet of the second drain valve penetrates through and extends to the inside of the heat exchange bin (13), a second water outlet tube (24) is communicated with the outside of the storage tube (2) and is positioned on the right side of the second water inlet tube (23), and a water inlet of the second water outlet tube (24) penetrates through and extends to the inside of the heat exchange bin (13);
the inside of the baffle plate (20) is fixedly connected with the outside of the heat exchange tube (7), a water through hole (28) is formed in the outside of the baffle plate (20) and located at one side of the heat exchange tube (7), and two ends of the heat exchange tube (7) penetrate through and extend to the front side and the rear side of the heat exchange bin (13);
three groups of sliding grooves (33) are formed in the outer portion of the heat exchange bin (13) and located on the front sides of the second water inlet pipe (23) and the second water outlet pipe (24), the inner portions of the sliding grooves (33) are in sliding connection with mounting frames (34), a plurality of spoilers (35) are fixedly connected to the outer portions of the mounting frames (34) from front to back in sequence, and the outer portions of the spoilers (35) are in sliding connection with the inner portions of the storage tubes (2).
2. An energy efficient falling film heat exchanger according to claim 1, wherein: the top of first sealed lid (3) front side communicates there is first outlet pipe (21), the top of first sealed lid (3) front side and be located the below of first outlet pipe (21) and install first drain valve, the bottom of second sealed lid (4) rear side communicates there is first inlet tube (22).
3. An energy efficient falling film heat exchanger according to claim 2, wherein: the outside of first outlet pipe (21) is installed first valve (25), the outside of second outlet pipe (24) is installed second valve (26), the outside fixedly connected with filter component (27) of first inlet tube (22) and second inlet tube (23).
4. An energy efficient falling film heat exchanger according to claim 3, wherein: the filter assembly (27) comprises a filter pipe (29), a plug (30) is connected to the filter pipe (29) through internal threads, a supporting frame (31) is fixedly connected to the outside of the plug (30) and located inside the filter pipe (29), and a filter screen (32) is fixedly connected to the outside of the supporting frame (31) and located inside the filter pipe (29).
5. An energy efficient falling film heat exchanger according to claim 4, wherein: the bottom of the filter tube (29) above the storage tube (2) is fixedly connected with the outside of the first water inlet tube (22), and the bottom of the filter tube (29) at the rear side of the second sealing cover (4) is fixedly connected with the outside of the second water inlet tube (23).
6. The method of using an energy efficient falling film heat exchanger according to claim 5, wherein: the method specifically comprises the following steps:
step one, heat exchange preparation: the external heating steam pipe is communicated with a filter pipe (29) above the second water inlet pipe (23), the external material liquid pipe is communicated with the filter pipe (29) above the first water inlet pipe (22), the first valve (25) and the second valve (26) are rotated, and the first water outlet pipe (21) and the second water outlet pipe (24) are closed;
step two, cold heating steam inflow: after the first water outlet pipe (21) and the second water outlet pipe (24) are closed, external heating steam flows into the heat exchange bin (13) through the filter pipe (29) above the second water inlet pipe (23) and the second water inlet pipe (23), external feed liquid flows into the second sealing cover (4) through the filter pipe (29) above the first water inlet pipe (22) and the first water inlet pipe (22), and feed liquid in the second sealing cover (4) flows into the heat exchange pipe (7) and between the storage pipe (2) and the heat exchange bin (13) respectively;
step three, falling film heat exchange: when the feed liquid in the second sealing cover (4) flows into the heat exchange tube (7), the water stop plate (10) stops the feed liquid to reduce the flow speed of the feed liquid in the heat exchange tube (7), the feed liquid flows in the heat exchange tube (7) through the through holes (11) and the water flowing holes (12), the feed liquid in the second sealing cover (4) flows in between the storage tube (2) and the heat exchange bin (13), the flow speed of the feed liquid between the storage tube (2) and the heat exchange bin (13) is reduced by the baffle plate (35), when the heating steam flows into the heat exchange bin (13), the heating steam is stopped by the first heat baffle plate (14) and the baffle plate (20), the heating steam flows into the upper part of the second heat baffle plate (16) through the water flowing holes (28) and the water flowing holes (17) and flows into the bottom of the heat exchange bin (13), and the heating steam at the bottom of the heat exchange bin (13) flows into the heat exchange tube (13) through the third water flowing holes (19) and the heat exchange tube (13) to absorb heat between the heating steam and the feed liquid in the heat exchange tube (13) and the right side of the heat exchange tube (7);
step four, cold heating steam is discharged outwards: the first valve (25) and the second valve (26) are rotated, the first water outlet pipe (21) and the second water outlet pipe (24) are opened, so that the material liquid steam heated in the storage pipe (2) is discharged from the first water outlet pipe (21), the heated steam cooled in the heat exchange bin (13) is discharged from the second water outlet pipe (24), the first drain valve and the second drain valve are opened, the material liquid in the storage pipe (2) is discharged by the first drain valve, and the liquefied steam in the heat exchange bin (13) is discharged by the second drain valve;
step five, heat exchange cleaning: after the feed liquid and the heating steam in the storage tube (2) are discharged, the bolts between the storage tube (2) and the second sealing cover (4) are rotated, the bolts between the storage tube (2) and the first sealing cover (3) are removed from the front end and the rear end of the storage tube (2) through the first sealing cover (3) and the second sealing cover (4), the front end and the rear end of the storage tube (2) are exposed, a welding frame (9) and a mounting frame (34) are moved out from the mounting groove (8) and the sliding groove (33) by workers, the welding frame (9) is moved out of the heat exchange tube (7) through the mounting frame (34), a baffle plate (35) is moved out from between the storage tube (2) and the heat exchange bin (13), the baffle plate (35) and the baffle plate (10) are cleaned by workers, the plug (30) is rotated, the plug (30) is taken out from the filter tube (29), and the filter screen (32) outside the support frame (31) is cleaned by the workers.
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| CN115752024A (en) | 2023-03-07 |
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