CN115752024A - 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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- CN115752024A CN115752024A CN202211431913.XA CN202211431913A CN115752024A CN 115752024 A CN115752024 A CN 115752024A CN 202211431913 A CN202211431913 A CN 202211431913A CN 115752024 A CN115752024 A CN 115752024A
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- 239000011552 falling film Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 152
- 238000003860 storage Methods 0.000 claims abstract description 90
- 239000007788 liquid Substances 0.000 claims abstract description 82
- 238000010438 heat treatment Methods 0.000 claims abstract description 70
- 230000000903 blocking effect Effects 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims description 35
- 238000009413 insulation Methods 0.000 claims description 21
- 230000007246 mechanism Effects 0.000 claims description 19
- 238000007599 discharging Methods 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000013021 overheating Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
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- 239000003208 petroleum Substances 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 an energy-efficient falling film type heat exchanger and a using method thereof, and relates to the technical field of heat exchangers. The high-energy-efficiency falling film heat exchanger and the use method thereof have the advantages that the feed liquid is blocked by the water-stop plate and the flow-blocking plate, the flowing speed of the feed liquid in the heat exchange tube is reduced, the flowing speed of the feed liquid between the storage tube and the heat exchange bin is reduced, meanwhile, the heating steam is blocked by the first heat-insulating plate and the blocking plate, the heating steam flows into the upper part of the second heat-insulating plate, the heating steam is blocked by the second heat-insulating plate and the blocking plate, the heating steam flows into the bottom of the heat exchange bin through the water through hole and the second water through hole, 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 hole, so that the water-stop plate, the flow-blocking plate and the blocking plate slow down the flowing speed of the feed liquid and the heating steam in the heat exchange bin, the heat absorption time of the feed liquid in the heat exchange tube, the feed liquid between the storage tube and the heat exchange bin is prolonged, and the heat exchange effect is improved.
Description
Technical Field
The invention relates to the technical field of heat exchangers, in particular to a high-energy-efficiency falling film type heat exchanger and a using method thereof.
Background
The heat exchanger is a device for transferring partial heat of hot fluid to cold fluid, also called as heat exchanger, and is a universal device for chemical industry, petroleum, power, food and other industrial departments, and plays an important role in production, and the heat exchanger can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like in chemical production, and is more widely applied. Heat exchangers are of many kinds, but basically can be divided into three main categories according to the principle and mode of heat exchange between cold fluid and hot fluid: dividing wall type, mixed type and heat storage type.
For example, chinese patent CN215176192U discloses a high-energy-efficiency falling film heat exchanger, in which gas is distributed at two sides of a heat exchange tube, so that a film can be uniformly and rapidly formed on the surface of the heat exchange tube, and the heat exchange effect is better and more uniform.
Although can be with gas distribution in the both sides of heat exchange tube in above-mentioned patent, can be even and quick form the membrane at the surface, but the flowing speed of feed liquid and heating steam is fast when opening the flowing valve, make heat exchange tube heat exchange efficiency low, provide a falling liquid film heat exchanger and application method of high energy efficiency for this reason, let the water-stop sheet, spoiler and baffler slow down the flow velocity of feed liquid and heating steam, increase the inside feed liquid of heat exchange tube and the feed liquid absorption heat transfer storehouse inside heating steam's of feed liquid between storage pipe and the heat exchange storehouse heat time, improve the heat transfer effect.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a high-energy-efficiency falling film heat exchanger and a using method thereof, and solves the problems that the flowing speed of feed liquid and heating steam is high, and the heat exchange efficiency of a heat exchange tube is low.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a falling liquid film heat exchanger of high energy efficiency, is including supporting the base, the top fixedly connected with storage pipe of supporting the base, the first sealed lid of bolt fixedly connected with is passed through to the front side of storing the pipe, the rear side of storing the pipe is passed through the sealed lid of bolt fixedly connected with second, fixed block fixedly connected with heat transfer mechanism is passed through to the inside of storing the pipe, the inside fixedly connected with water proof mechanism of heat transfer mechanism.
The invention is further configured to: the water proof mechanism includes the heat exchange tube, the mounting groove has been seted up to the inside of heat exchange tube, the inside sliding connection of mounting groove has the welding jig, a plurality of water-stop sheets of fixedly connected with in proper order backward in the past of the inside of welding jig, the overheat hole has been seted up to the outside of water-stop sheet, the discharge orifice has been seted up to the bottom of water-stop sheet, the outside of water-stop sheet and the inside sliding connection of heat exchange tube.
The invention is further configured to: the outside in heat transfer storehouse and the front side that is located second inlet tube and second outlet pipe open and are equipped with three sliding tray of group, three groups the inside sliding connection of sliding tray has the mounting bracket, the outside from preceding fixedly connected with spoiler backward in proper order of mounting bracket, the outside of spoiler and the inside sliding connection of storage pipe.
Through adopting above-mentioned technical scheme, through rotating the bolt between the sealed lid of storage pipe and second, the bolt between storage pipe and the first sealed lid, come both ends from the front and back of storage pipe with first sealed lid and the sealed lid of second and move aside, expose the front and back both ends of storage pipe, the staff shifts out weld holder and mounting bracket from the inside of sliding tray and sliding tray, make the weld holder shift out the water-stop sheet from the inside of heat exchange tube, the mounting bracket shifts out the water-stop sheet from between storage pipe and the heat transfer storehouse, let staff clear up water-stop sheet and water-stop sheet, can reduce the outside incrustation scale of water-stop sheet and water-stop sheet like this, improve water-stop sheet and water-stop sheet heat conduction efficiency, improve heat exchange efficiency.
The invention is further configured to: 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 right side of 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 blocking 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.
By adopting the technical scheme, let water-stop sheet and spoiler block the feed liquid, reduce the speed that the feed liquid flows in the heat exchange tube inside, reduce the flow speed of feed liquid between storage pipe and heat transfer storehouse, first heat insulating board and baffler block heating steam simultaneously, heating steam passes through limbers and first water hole, flow in the top of second heat insulating board, second heat insulating board and baffler block heating steam, heating steam flows in the bottom of heat transfer storehouse through limbers and second water hole, the heating steam of heat transfer storehouse bottom flows in the right side of third heat insulating board through the third water hole, can let water-stop sheet, spoiler and baffler slow down the flow speed of feed liquid and heating steam like this, increase the heat time that feed liquid inside the heat exchange tube absorbs the heating steam inside the heat transfer storehouse with the feed liquid between storage pipe and the heat transfer storehouse, improve heat transfer effect.
The invention is further configured to: 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 drainage 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 configured to: the rear side intercommunication at storage pipe top has the second inlet tube, the delivery port of second inlet tube runs through and extends to the inside in heat exchange storehouse, the second drain valve is installed to the bottom of storage pipe, and the delivery port of second drain valve runs through and extends to the inside in heat exchange storehouse, the outside of storage pipe and the right side intercommunication that is located the second inlet tube have the second outlet pipe, the water inlet of second outlet pipe runs through and extends to the inside in heat exchange storehouse.
The invention is further configured to: the externally mounted of first outlet pipe has first valve, the externally mounted of second outlet pipe has the second valve, the outside fixedly connected with filter assembly of first inlet tube and second inlet tube.
The invention is further configured to: the inside of baffler and the outside fixed connection of heat exchange tube, the limbers has been seted up to the outside of baffler and the one side that is located the heat exchange tube, the both ends of heat exchange tube run through and extend to the front and back both sides in heat exchange storehouse.
The invention is further configured to: the filter assembly comprises a filter pipe, the inner thread of the filter pipe is connected with a plug, the outer part of the plug is fixedly connected with a support frame which is located inside the filter pipe, and the outer part of the support frame is fixedly connected with a filter screen which is located inside the filter pipe.
Through adopting above-mentioned technical scheme, the inside of the filter tube of second inlet tube top is introduced with external heating steam, and the inside of the filter tube of first inlet tube top is introduced with external feed liquid again, can absorb the impurity in heating steam and the feed liquid through the filter screen like this, reduces the impurity that gets into storage pipe, the inside heating steam of first sealed lid and the sealed lid of second and feed liquid, reduces the production of incrustation scale, increases heat exchanger heat transfer life cycle.
Through adopting above-mentioned technical scheme, the inside feed liquid of storage pipe and heating steam are arranged the back, rotate the end cap, take out the end cap from the inside of filter tube, let the staff clear up or change the outside filter screen of support frame, improve the efficiency that the filter screen cleared up or changed.
The invention is further configured to: the storage pipe top the bottom of filter tube and the outside fixed connection of first inlet tube, the sealed rear side of lid of second the bottom of filter tube and the outside fixed connection of second inlet tube.
The invention also discloses a using method of the high-energy-efficiency falling film heat exchanger, which comprises the following steps:
step one, heat exchange preparation: communicating an external heating steam pipe with the filter pipe above the second water inlet pipe, communicating an external feed pipe with the filter pipe above the first water inlet pipe, and rotating the first valve and the second valve to close the first water outlet pipe and the second water outlet pipe;
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, then 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 the feed liquid in the second sealing cover respectively flows into the heat exchange pipe and between the storage pipe and the heat exchange bin;
step three, falling film heat exchange: when the feed liquid in the second sealing cover flows into the heat exchange tube, the feed liquid is blocked by the water-stop plate 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 overheating hole and the water flowing hole;
step four, discharging cold heating steam: 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 cooled heating steam in the heat exchange bin from the second water outlet pipe, opening a first water discharge valve and a second water discharge valve, discharging the material liquid in the storage pipe by the first water discharge valve, and discharging the liquefied steam in the heat exchange bin by the second water discharge valve;
step five, heat exchange cleaning: the inside feed liquid of storage tube and the back of having arranged of heating steam, rotate the bolt between the sealed lid of storage tube and second, the bolt between storage tube and the first sealed lid, come both ends from the front and back of storage tube with first sealed lid and the sealed lid of second and move aside, expose the front and back both ends of storage tube, the staff shifts out weld holder and mounting bracket from the inside of sliding tray and sliding tray, make the weld holder shift out the water-stop plate from the inside of heat exchange tube, the mounting bracket shifts out the water-stop plate from between storage tube and the heat transfer storehouse, let the staff clear up water-stop plate and water-stop plate, rotate the end cap simultaneously, take out the end cap from the inside of filter tube, let the staff clear up the outside filter screen of support frame.
The invention provides an energy-efficient falling film type heat exchanger and a using method thereof. The method has the following beneficial effects:
(1) The falling film heat exchanger with high energy efficiency and the use method thereof have the advantages that the external heating steam is introduced into the heat exchange bin through the second water inlet pipe, the external feed liquid is introduced into the heat exchange tube and between the storage tube and the heat exchange bin through the first water inlet pipe, the feed liquid is blocked by the water-stop plate and the flow-blocking plate, the flowing speed of the feed liquid in the heat exchange tube is reduced, the flowing speed of the feed liquid between the storage tube and the heat exchange bin is reduced, meanwhile, the heating steam is blocked by the first heat-insulating plate and the flow-blocking plate, the heating steam flows into the bottom of the heat exchange bin through the water through hole and the second water through hole, 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 hole, so that the water-stop plate, the flow-blocking plate and the flow-blocking plate slow down the flowing speed of the feed liquid and the heating steam, the heat absorption time of the feed liquid in the heat exchange tube and the feed liquid between the storage tube and the heat exchange bin is prolonged, and the heat exchange effect is improved.
(2) This high-energy-efficiency falling film heat exchanger and application method, through rotating the bolt between storage pipe and the sealed lid of second, the bolt between storage pipe and the first sealed lid, come both ends with first sealed lid and the sealed lid of second from the front and back of storage pipe and remove, expose the front and back both ends of storage pipe, the staff shifts out weld holder and mounting bracket from the inside of sliding tray and sliding tray, make the weld holder shift out the water blocking plate from the inside of heat exchange tube, the mounting bracket shifts out the spoiler from between storage pipe and the heat transfer storehouse, let the staff clear up spoiler and water blocking plate, can reduce the outside incrustation scale of spoiler and water blocking plate like this, improve spoiler and water blocking plate heat conduction efficiency, improve heat exchange efficiency.
(3) This falling liquid film heat exchanger and application method of high energy efficiency, through the inside of introducing the filter tube of second inlet tube top with external heating steam, introduce the inside of the filter tube of first inlet tube top with external feed liquid again, can absorb the impurity in heating steam and the feed liquid through the filter screen like this, reduce the impurity that gets into storage pipe, the inside heating steam of first sealed lid and the sealed lid of second and feed liquid, reduce the production of incrustation scale, increase heat exchanger heat transfer life cycle.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the storage tube of the present invention;
FIG. 3 is a schematic structural view of the heat exchange chamber of the present invention;
FIG. 4 is a cross-sectional view of a storage tube of the present invention;
FIG. 5 is a schematic structural diagram of a heat exchange mechanism according to the present invention;
FIG. 6 is a schematic view of the construction of a second insulating panel according to the present invention;
FIG. 7 is a schematic structural view of a water-stop mechanism according to the present invention;
FIG. 8 is a schematic view 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 isolation mechanism; 7. a heat exchange tube; 8. mounting grooves; 9. welding a frame; 10. a water-stop sheet; 11. a superheat hole; 12. a water flowing hole; 13. a heat exchange bin; 14. a first heat insulation plate; 15. a first water through hole; 16. a second heat insulation board; 17. a second water through hole; 18. a third heat insulation plate; 19. a third water through hole; 20. a barrier 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 spoiler.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1 to 8, an embodiment of the present invention provides a technical solution: the utility model provides a falling liquid film heat exchanger of high energy efficiency, is including supporting base 1, supports base 1's top fixedly connected with storage pipe 2, and the first sealed lid 3 of bolt fixedly connected with is passed through to the front side of storage pipe 2, and the sealed lid 4 of bolt fixedly connected with second is passed through to the rear side of storage pipe 2, and fixed block fixedly connected with heat transfer mechanism 5 is passed through to the inside of storage pipe 2, and the inside fixedly connected with water proof mechanism 6 of heat transfer mechanism 5.
As a preferred scheme, as shown in fig. 7, the water-stop mechanism 6 includes a heat exchange tube 7, a mounting groove 8 is formed in the heat exchange tube 7, a welding frame 9 is slidably connected to the inside of the mounting groove 8, a plurality of water-stop plates 10 are fixedly connected to the inside of the welding frame 9 from front to back in sequence, a superheat hole 11 is formed in the outside of each water-stop plate 10, a water flowing hole 12 is formed in the bottom of each water-stop plate 10, and the outside of each water-stop plate 10 is slidably connected to the inside of the heat exchange tube 7.
Furthermore, three groups of sliding grooves 33 are formed in the outer portion of the heat exchange bin 13 and located in front of the second water inlet pipe 23 and the second water outlet pipe 24, an installation frame 34 is connected to the inner portions of the three groups of sliding grooves 33 in a sliding mode, a spoiler 35 is fixedly connected to the outer portion of the installation frame 34 from front to back in sequence, and the outer portion of the spoiler 35 is connected with the inner portion of the storage pipe 2 in a sliding mode.
Furthermore, the water-stop plate 10 and the spoiler 35 are made of aluminum alloy materials, and the heat exchange tube 7 is made of aluminum materials, so that the heat conduction efficiency of the water-stop plate 10, the spoiler 35 and the heat exchange tube 7 is improved.
Further, by rotating the bolt between the storage pipe 2 and the second sealing cover 4, the bolt between the storage pipe 2 and the first sealing cover 3, the first sealing cover 3 and the second sealing cover 4 are moved away from the front end and the rear end of the storage pipe 2, the front end and the rear end of the storage pipe 2 are exposed, a worker moves the welding frame 9 and the mounting frame 34 out of the sliding groove 33 and the sliding groove 33, the welding frame 9 moves the water blocking plate 10 out of the heat exchange pipe 7, the mounting frame 34 moves the water blocking plate 35 out of the storage pipe 2 and the heat exchange bin 13, and the worker cleans the water blocking plate 35 and the water blocking plate 10, so that scales outside the water blocking plate 35 and the water blocking plate 10 can be reduced, the heat conduction efficiency of the water blocking plate 35 and the water blocking plate 10 is improved, and the heat exchange efficiency is improved.
As a preferable scheme, as shown in fig. 5 to 6, the heat exchanging mechanism 5 includes a heat exchanging chamber 13, a first heat insulating plate 14 is fixedly connected inside the heat exchanging chamber 13, a first water through hole 15 is formed in a front side of a top of the first heat insulating plate 14, a second heat insulating plate 16 is fixedly connected inside the heat exchanging chamber 13 and below the first heat insulating plate 14, a second water through hole 17 is formed in a rear side of a top of the second heat insulating plate 16, a third heat insulating plate 18 is fixedly connected inside the heat exchanging chamber 13 and on right sides of the first heat insulating plate 14 and the second heat insulating plate 16, a third water through hole 19 is formed in a front side of a bottom of the third heat insulating plate 18, and blocking plates 20 are fixedly connected to a top of the first heat insulating plate 14 and a top and a bottom of the second heat insulating plate 16.
Further, the inside of the blocking 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 blocking 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.
Further, the first water passing hole 15, the second water passing hole 17, the third water passing hole 19 and the water passing holes 28 are internally provided with blocking films which slow down the flow of the heating steam.
Further, the heat exchange 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 pipe 7 and between the storage pipe 2 and the heat exchange bin 13 through the first water inlet pipe 22, the feed liquid is blocked by the water blocking plate 10 and the flow blocking plate 35, the flowing speed of the feed liquid in the heat exchange pipe 7 is reduced, the flowing speed of the feed liquid between the storage pipe 2 and the heat exchange bin 13 is reduced, meanwhile, the heating steam is blocked by the first heat insulation plate 14 and the blocking plate 20 and flows into the top of the second heat insulation plate 16 through the water through hole 28 and the first water through hole 15, the heating steam is blocked by the second heat insulation plate 16 and the blocking plate 20, the heating steam flows into the bottom of the heat exchange bin 13 through the water through hole 28 and the second water through hole 17, the heating steam at the bottom of the heat exchange bin 13 flows into the right side of the third heat insulation plate 18 through the third water through hole 19, so that the flow speed of the water blocking plate 10, the flow blocking plate 35 and the blocking plate 20 slows down and the heating steam, the flowing speed of the feed liquid in the heat exchange bin 7 and the feed liquid absorbed in the heat exchange bin 13 between the storage pipe 2 and 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 drain valve is arranged at the top of the front side of the first sealing cover 3 and below the first water outlet pipe 21, and a first water inlet pipe 22 is communicated with the bottom of the rear side of the second sealing cover 4.
Further, the rear side intercommunication at storage pipe 2 top has second inlet tube 23, and the delivery port of second inlet tube 23 runs through and extends to the inside in heat transfer storehouse 13, and the second drain valve is installed to the bottom of storage pipe 2, and the delivery port of second drain valve runs through and extends to the inside in heat transfer storehouse 13, and the outside of storage pipe 2 and the right side intercommunication that is located second inlet tube 23 have second outlet pipe 24, and the water inlet of second outlet pipe 24 runs through and extends to the inside in heat transfer storehouse 13.
Further, an external heating steam pipe is communicated with the filtering pipe 29 above the second water inlet pipe 23, and an external feed liquid pipe is communicated with the filtering pipe 29 above the first water inlet pipe 22.
Further, a first valve 25 is mounted on the exterior of the first water outlet pipe 21, a second valve 26 is mounted on the exterior of the second water outlet pipe 24, and a filter assembly 27 is fixedly connected to the exterior of the first water inlet pipe 22 and the exterior of the second water inlet pipe 23.
Preferably, as shown in fig. 8, the filter assembly 27 includes a filter tube 29, a plug 30 is screwed into the filter tube 29, a support frame 31 is fixedly connected to the outside of the plug 30 and inside the filter tube 29, and a filter screen 32 is fixedly connected to the outside of the support frame 31 and inside the filter tube 29.
Further, through the inside of introducing the filter tube 29 of second inlet tube 23 top with external heating steam, introduce the inside of filter tube 29 of first inlet tube 22 top with external feed liquid again, can absorb the impurity in heating steam and the feed liquid through filter screen 32 like this, reduce the impurity that gets into storage tube 2, first sealed lid 3 and the inside heating steam of the sealed lid 4 of second and feed liquid, reduce the production of incrustation scale, increase heat exchanger heat transfer life.
Furthermore, after the feed liquid and the heating steam in the storage pipe 2 are discharged, the plug 30 is rotated, the plug 30 is taken out from the inside of the filter pipe 29, a worker can clean or replace the filter screen 32 outside the support frame 31, and the cleaning or replacing efficiency of the filter screen 32 is improved.
The invention is further configured to: the bottom of the filter pipe 29 above the storage pipe 2 is fixedly connected with the outside of the first water inlet pipe 22, and the bottom of the filter pipe 29 at the rear side of the second sealing cover 4 is fixedly connected with the outside of the second water inlet pipe 23.
The use method of the high-energy-efficiency falling film heat exchanger specifically comprises the following steps:
step one, heat exchange preparation: communicating an external heating steam pipe with the filter pipe 29 above the second water inlet pipe 23, communicating an external feed pipe with the filter pipe 29 above the first water inlet pipe 22, and rotating the first valve 25 and the second valve 26 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, then 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 the feed liquid in the second sealing cover 4 respectively flows into the heat exchange pipe 7 and between the storage pipe 2 and the heat exchange bin 13;
step three, falling film heat exchange: when the feed liquid in the second sealing cover 4 flows into the heat exchange tube 7, the feed liquid is blocked by the water-stop plate 10 to reduce the flowing speed of the feed liquid in the heat exchange tube 7, meanwhile, the feed liquid flows in the heat exchange tube 7 through the heat passing hole 11 and the water flowing hole 12, when the feed liquid in the second sealing cover 4 flows between the storage tube 2 and the heat exchange bin 13, the feed liquid is blocked by the baffle plate 35 to reduce the flowing speed of the feed liquid between the storage tube 2 and the heat exchange bin 13, when the heating steam flows into the heat exchange bin 13, the heating steam is blocked by the first heat-insulating plate 14 and the baffle plate 20, the heating steam flows into the upper part of the second heat-insulating plate 16 through the water through hole 28 and the first water passing hole 15, 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 passing hole 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 absorb the heat of the heating steam;
step four, discharging cold heating steam: rotating the first valve 25 and the second valve 26, opening the first water outlet pipe 21 and the second water outlet pipe 24, discharging the heated material liquid steam in the storage pipe 2 from the first water outlet pipe 21, discharging the cooled heating steam in the heat exchange bin 13 from the second water outlet pipe 24, opening a first water discharge valve and a second water discharge valve, discharging the material liquid in the storage pipe 2 by the first water discharge valve, and discharging the liquefied steam in the heat exchange bin 13 by the second water discharge valve;
step five, heat exchange cleaning: after the feed liquid and the heating steam in the storage pipe 2 are exhausted, the bolt between the storage pipe 2 and the second sealing cover 4 is rotated, the bolt between the storage pipe 2 and the first sealing cover 3 is moved away from the front end and the rear end of the storage pipe 2 by the first sealing cover 3 and the second sealing cover 4, the front end and the rear end of the storage pipe 2 are exposed, a worker moves out the welding frame 9 and the mounting frame 34 from the sliding groove 33 and the sliding groove 33, the water stop plate 10 is moved out of the heat exchange pipe 7 by the welding frame 9, the water stop plate 35 is moved out of the storage pipe 2 and the heat exchange bin 13 by the mounting frame 34, the worker cleans the water stop plate 35 and the water stop plate 10, the plug 30 is rotated at the same time, the plug 30 is taken out of the filter pipe 29, and the worker cleans the filter screen 32 outside the support frame 31.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An energy-efficient falling film heat exchanger, includes support base (1), its characterized in that: the water-resisting and heat-preserving device is characterized in that a storage tube (2) is fixedly connected to the top of the supporting base (1), a first sealing cover (3) is fixedly connected to the front side of the storage tube (2) through a bolt, a second sealing cover (4) is fixedly connected to the rear side of the storage tube (2) through a bolt, a heat exchange mechanism (5) is fixedly connected to the inside of the storage tube (2) through a fixing block, and a water-resisting mechanism (6) is fixedly connected to the inside of the heat exchange mechanism (5);
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 to the inside of the mounting groove (8) in a sliding mode, a plurality of water-proof plates (10) are fixedly connected to the inside of the welding frame (9) in sequence from front to back, a overheating hole (11) is formed in the outside of each water-proof plate (10), a water flowing hole (12) is formed in the bottom of each water-proof plate (10), and the outside of each water-proof plate (10) is connected with the inside of the heat exchange tube (7) in a sliding mode.
2. An energy efficient falling film heat exchanger according to claim 1 wherein: heat exchange mechanism (5) are including heat transfer storehouse (13), the inside fixedly connected with first heat insulating board (14) in heat transfer storehouse (13), the front side at first heat insulating board (14) top is opened and is equipped with first water hole (15) of crossing, the inside of heat transfer storehouse (13) just is located below fixedly connected with second heat insulating board (16) of first heat insulating board (14), the rear side at second heat insulating board (16) top is opened and is equipped with the second and crosses water hole (17), the inside of heat transfer storehouse (13) just is located right side fixedly connected with third heat insulating board (18) of first heat insulating board (14) and second heat insulating board (16), the front side of third heat insulating board (18) bottom is opened and is equipped with the third and crosses water hole (19), the top of first heat insulating board (14) and the equal fixedly connected with baffler (20) in top and the bottom of second heat insulating board (16).
3. An energy efficient falling film heat exchanger according to claim 2 wherein: the top intercommunication of first sealed lid (3) front side has first outlet pipe (21), the top of first sealed lid (3) front side just is located the below of first outlet pipe (21) and installs first drain valve, the bottom intercommunication of the sealed lid of second (4) rear side has first inlet tube (22).
4. An energy efficient falling film heat exchanger according to claim 3 wherein: the rear side intercommunication at storage pipe (2) top has second inlet tube (23), the delivery port of second inlet tube (23) runs through and extends to the inside in storehouse (13) of changing heat, the second drain valve is installed to the bottom of storage pipe (2), and the delivery port of second drain valve runs through and extends to the inside in storehouse (13) of changing heat, the outside of storage pipe (2) and the right side intercommunication that is located second inlet tube (23) have second outlet pipe (24), the water inlet of second outlet pipe (24) runs through and extends to the inside in storehouse (13) of changing heat.
5. An energy efficient falling film heat exchanger according to claim 4 wherein: the externally mounted of first outlet pipe (21) has first valve (25), the externally mounted of second outlet pipe (24) has second valve (26), the outside fixedly connected with filter assembly (27) of first inlet tube (22) and second inlet tube (23).
6. An energy efficient falling film heat exchanger according to claim 2 wherein: the heat exchange device is characterized in that the inside of the blocking 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 blocking 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).
7. An energy efficient falling film heat exchanger according to claim 5 wherein: the filter assembly (27) comprises a filter pipe (29), the inner thread of the filter pipe (29) is connected with a plug (30), the outer part of the plug (30) is fixedly connected with a support frame (31) which is located on the inner part of the filter pipe (29), and the outer part of the support frame (31) is fixedly connected with a filter screen (32) which is located on the inner part of the filter pipe (29).
8. An energy efficient falling film heat exchanger according to claim 7 wherein: the bottom of the filter pipe (29) is fixedly connected with the outside of the first water inlet pipe (22) above the storage pipe (2), and the bottom of the filter pipe (29) is fixedly connected with the outside of the second water inlet pipe (23) at the rear side of the second sealing cover (4).
9. An energy efficient falling film heat exchanger according to claim 5 wherein: the outside in heat transfer storehouse (13) and the front side that is located second inlet tube (23) and second outlet pipe (24) open and are equipped with three sliding tray of group (33), three groups the inside sliding connection of sliding tray (33) has mounting bracket (34), a plurality of spoilers (35) of fixedly connected with in proper order backward in the past of the outside of mounting bracket (34), the outside of spoiler (35) and the inside sliding connection of storage pipe (2).
10. An application method of a high-energy-efficiency falling film type heat exchanger is characterized in that: the method specifically comprises the following steps:
step one, heat exchange preparation: communicating an external heating steam pipe with a filter pipe (29) above a second water inlet pipe (23), communicating an external feed pipe with the filter pipe (29) above a first water inlet pipe (22), and rotating a first valve (25) and a second valve (26) to close a first water outlet pipe (21) and a second water outlet pipe (24);
step two, cold heating steam flows in: 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 the 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), meanwhile, the feed liquid flows in the heat exchange tube (7) through the overheating hole (11) and the water flowing hole (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-stop plate (35) stops the feed liquid to reduce the flow speed of the feed liquid between the storage tube (2) and the heat exchange bin (13), when the heating steam flows into the heat exchange bin (13), the first heat-insulation plate (14) and the barrier plate (20) stop the heating steam, the heating steam flows into the bottom of the heat exchange bin (13) through the water through hole (28) and the first water through hole (15), the heating steam flows into the upper part of the second heat-insulation plate (16), the second heat-insulation plate (16) and the barrier plate (20) stop the heating steam, the heating steam flows into the bottom of the heat exchange bin (13) through the water hole (28) and the second water through the heat exchange hole (19), and the heat exchange bin (13), and the heat exchange tube (13);
step four, discharging cold heating steam: rotating a first valve (25) and a second valve (26), opening a first water outlet pipe (21) and a second water outlet pipe (24), discharging the heated material liquid steam in the storage pipe (2) from the first water outlet pipe (21), discharging the cooled heating steam in the heat exchange bin (13) from the second water outlet pipe (24), opening a first water discharge valve and a second water discharge valve, discharging the material liquid in the storage pipe (2) through the first water discharge valve, and discharging the liquefied steam in the heat exchange bin (13) through the second water discharge valve;
step five, heat exchange cleaning: after the feed liquid and the heating steam in the storage pipe (2) are exhausted, bolts between the storage pipe (2) and the second sealing cover (4) are rotated, the bolts between the storage pipe (2) and the first sealing cover (3) move the first sealing cover (3) and the second sealing cover (4) from the front end to the rear end of the storage pipe (2) to expose the front end and the rear end of the storage pipe (2), a worker moves the welding frame (9) and the mounting frame (34) out of the sliding groove (33) and the sliding groove (33), the welding frame (9) moves the water-stop plate (10) out of the heat exchange pipe (7), the mounting frame (34) moves the flow-stop plate (35) out of the position between the storage pipe (2) and the heat exchange bin (13), the worker cleans the flow-stop plate (35) and the water-stop plate (10), the plug (30) is rotated at the same time, the plug (30) is taken out of the filter pipe (29), and the worker cleans the filter screen (32) outside the support frame (31).
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| CN115752024B (en) | 2024-02-06 |
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