CN116952038B - Indirect heat exchange device - Google Patents
Indirect heat exchange device Download PDFInfo
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- CN116952038B CN116952038B CN202311182162.7A CN202311182162A CN116952038B CN 116952038 B CN116952038 B CN 116952038B CN 202311182162 A CN202311182162 A CN 202311182162A CN 116952038 B CN116952038 B CN 116952038B
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- indirect heat
- heat conduction
- sliding
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- box
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000003546 flue gas Substances 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims description 30
- 238000004140 cleaning Methods 0.000 claims description 28
- 239000007789 gas Substances 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000000428 dust Substances 0.000 description 8
- 238000002955 isolation Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000008021 deposition Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D17/00—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles
- F28D17/02—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles using rigid bodies, e.g. of porous material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to the field of heat exchange devices, in particular to an indirect heat exchange device, which comprises: the sealing limiting rotary connection is connected with a first indirect heat conduction circular pipe on the outer wall of the flue gas transmission pipeline of the hot blast stove, the top of the first indirect heat conduction circular pipe is communicated with a second indirect heat conduction circular pipe with the diameter larger than that of the first indirect heat conduction circular pipe, the wall thickness of the first indirect heat conduction circular pipe is the same as that of the second indirect heat conduction circular pipe, the first indirect heat conduction circular pipe and the second indirect heat conduction circular pipe are integrally formed, the top limiting rotary connection of the second indirect heat conduction circular pipe is provided with a fixed mounting plate, and the fixed mounting plate is communicated with a main flue gas transmission pipeline; the first ring fixing box is connected with the second ring sliding box in a limiting sliding manner. The second ring sliding box that sets up reciprocates to change the area of contact of second ring sliding box and second indirect heat conduction pipe, make the fan under the same power, under the same wind-force state promptly, adjust the wind that second ring sliding box can blow out different temperatures, thereby be convenient for carry out the operation of multiple environment.
Description
Technical Field
The invention relates to the field of heat exchange devices, in particular to an indirect heat exchange device.
Background
Indirect heat exchange refers to a form of heat exchange in which the heat exchange media do not directly contact each other. Compared with direct heat exchange, the heat exchange mode does not need mixing before heat exchange and separation after heat exchange, saves production cost from time and process, and improves production efficiency.
The common indirect heat exchange part adopts the isolation cylinder to be sleeved on the outer wall of the air outlet pipe of the hot blast stove, then the fan is utilized to blow air inside the isolation cylinder, and the air is in contact with the wall of the air outlet pipe of the hot blast stove to conduct heat, so that the air has certain heat, and then the air is conducted out from the other end of the isolation cylinder to carry out baking operation. Thereby realizing the indirect heat exchange function.
In the prior art, the labyrinth heat exchange type hot blast stove of Chinese patent application number 201420432030.5 comprises an outer frame, an air inlet pipe group, an air outlet pipe group, a combustion chamber, an isolation barrel, wherein the isolation barrel is sleeved outside the combustion chamber, the combustion chamber is connected with a head annular support body through an air inlet pipe, an air outlet port of the head annular support body is connected with a tail annular support body through an air inlet pipe group, an air outlet port of the tail annular support body is connected with a return air port of the head annular support body through the air outlet pipe group, and a baffle plate for isolating the return air port and the air outlet port is arranged in the head annular support body.
The device is fixedly arranged outside the combustion chamber.
However, the common isolation cylinder is fixedly arranged on the outer wall of the air outlet pipe of the hot blast stove. The temperature of the air outlet of the isolation cylinder is regulated, so that the wind power of the fan can be regulated, and when the wind power is small, namely the wind speed is low, the wind can be contacted with the hot blast stove for a longer time, so that the temperature becomes high; when the wind is high, i.e. the wind speed is fast, the wind may be in contact with the stove for a short time and thus the temperature becomes low. Although the temperature of such a setting is regulated, the wind power varies and is sometimes not suitable.
Therefore, the indirect heat exchange device is designed, and the temperature of the blown wind can be regulated under the condition that the wind power is unchanged.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an indirect heat exchange device which can adjust the temperature of blown wind under the condition that the wind power is unchanged.
In order to solve the technical problems, the invention adopts the following technical scheme: an indirect heat exchange apparatus comprising:
the sealing limiting rotary connection is connected with a first indirect heat conduction circular pipe on the outer wall of the flue gas transmission pipeline of the hot blast stove, the top of the first indirect heat conduction circular pipe is communicated with a second indirect heat conduction circular pipe with the diameter larger than that of the first indirect heat conduction circular pipe, the wall thickness of the first indirect heat conduction circular pipe is the same as that of the second indirect heat conduction circular pipe, the first indirect heat conduction circular pipe and the second indirect heat conduction circular pipe are integrally formed, the top limiting rotary connection of the second indirect heat conduction circular pipe is provided with a fixed mounting plate, and the fixed mounting plate is communicated with a main flue gas transmission pipeline;
the first circular ring fixing box is in limiting sliding connection with the second circular ring sliding box, the first circular ring fixing box and the second circular ring sliding box are respectively and tightly connected with the outer walls of the first indirect heat conduction circular tube and the second indirect heat conduction circular tube, and are used for respectively conducting heat of the first indirect heat conduction circular tube and the second indirect heat conduction circular tube into the first circular ring fixing box and the second circular ring sliding box, gas in the cavity of the first circular ring fixing box is in sealing communication connection with gas in the cavity of the second circular ring sliding box, a clean air inlet pipeline is communicated with the bottom of the first circular ring fixing box, a clean hot air outlet is communicated with the top of the second circular ring sliding box, and a temperature sensor for detecting temperature is arranged at an air outlet of the clean hot air outlet; and according to the required temperature of the air outlet of the clean hot air outlet, the contact area of the second circular sliding box and the second indirect heat conduction circular tube is adjusted, so that the temperature of the air outlet of the clean hot air outlet is adjusted.
Further, the first indirect heat conduction circular tube is connected with an autorotation mechanism for enabling the first indirect heat conduction circular tube to autorotate around the hot blast stove flue gas transmission pipeline;
the heat exchange device comprises a first indirect heat conduction circular tube, a second indirect heat conduction circular tube, a first heat conduction circular tube, a second heat conduction circular tube, a third heat conduction circular tube, a fourth heat conduction circular tube, a fifth heat conduction circular tube and a fourth heat conduction circular tube, wherein a limit sliding rod is arranged inside the heat exchange device formed by the second indirect heat conduction circular tube and the first indirect heat conduction circular tube, the bottom of the limit sliding rod is rotationally connected with a cleaning column, and the heat exchange device further comprises a driving mechanism which enables the cleaning column to vertically move close to the inner walls of the first indirect heat conduction circular tube and the second indirect heat conduction circular tube;
according to the contact area of the second circular ring sliding box and the second indirect heat conduction circular tube, the autorotation mechanism is matched with the driving mechanism, so that the cleaning wire on the outer wall of the cleaning column can carry out ash cleaning operation on the contact part of the first circular ring fixing box and the first indirect heat conduction circular tube and the contact part of the second circular ring sliding box and the second indirect heat conduction circular tube.
Further, still include the fan, the output intercommunication of fan has external wind transfer pipe, the fixed bottom of the case portion of first ring evenly is provided with a plurality of clean wind and goes into the pipeline, and a plurality of clean wind go into the pipeline all with external wind transfer pipe intercommunication for make the fixed incasement of first ring evenly admit air.
Further, the fixed incasement of first ring is from inside to outside fixedly connected with third ring baffle, fourth baffle in proper order for the fixed case of first ring is divided into three space, the air inlet has been seted up to the interior top of the fixed case of third ring baffle and first ring, the air outlet has been seted up on the fourth baffle, the seal channel has been seted up to the one end that the third ring baffle was kept away from to the fourth baffle, in the space between the fixed case outer wall of second ring sliding box spacing sliding connection has first ring and the fourth baffle, the one side fixedly connected with two sealed pads that the second ring sliding box is close to the fourth baffle, the spacing sliding connection of second ring sliding box is in the seal channel, the cooperation of two sealed pads and seal channel and the fixed case of second ring is close to the one side of fourth baffle, makes air outlet and air inlet seal intercommunication, thereby makes the sealed gas in the fixed case of first ring enter into in the second ring sliding box.
Further, the rotation mechanism comprises a first gear and a first motor, the outer wall of the first indirect heat conduction round tube close to the bottom is fixedly connected with the first gear, the power output end of the first motor is connected with a second gear, and the second gear is meshed with the first gear.
Further, the driving mechanism comprises a sliding plate, the sliding plate is connected with the limiting sliding rod in a left-right limiting sliding manner through a left-right limiting sliding groove, an up-down moving mechanism for enabling the sliding plate to move up and down is arranged on the sliding plate, and a left-right moving mechanism for enabling the sliding plate to move left and right is arranged on the limiting sliding rod.
Further, the left-right moving mechanism comprises a second rotating column, the second rotating column is in limiting rotating connection on the fixed mounting plate, the second rotating column is arranged on the outer wall in the second indirect heat conduction round tube and is fixedly connected with a multi-position connecting plate, the bottom of the multi-position connecting plate is fixedly connected with a first annular plate, a second annular plate and a disc which are concentric and arranged on the same plane, the first annular plate, the second annular plate and the disc are sequentially arranged from outside to inside, the width of a ring groove between the first annular plate and the second annular plate is equal to the width of a ring groove between the second annular plate and the disc, a shuttle plate slides in the ring groove, the middle part of the shuttle plate is in rotating connection with a second baffle through a fourth rotating column, the bottom of the second baffle is fixedly connected with a limiting sliding sleeve, and the bottom of the limiting sliding sleeve is in limiting sliding connection with a limiting sliding rod;
the outer wall of one side of the disc is provided with a first lug, a notch is formed in the position, close to the first lug, of the second annular plate, two sides of the notch are in an inverted splayed shape, a second lug is formed in the position, close to the notch, of the first annular plate, the rotating multi-position connecting plate is used for driving the first annular plate, the second annular plate and the disc to synchronously rotate, and the second baffle plate, the limiting sliding sleeve and the limiting sliding rod which are limited left and right are matched, so that when the multi-position connecting plate rotates for one circle, a shuttle plate arranged in the annular groove moves into the other annular groove from the notch, and the second baffle plate, the limiting sliding sleeve, the limiting sliding rod and the cleaning column move to one side in the process of moving to the other annular groove from the notch, and left and right movement is realized;
the device further comprises a second motor, wherein the power output end of the second motor is connected with a first rotating column, and the first rotating column and the second rotating column synchronously rotate through the cooperation of a chain gear and a conveying chain.
Further, the up-down moving mechanism comprises a third gear, a third gear is fixedly connected to the outer wall of the bottom of the second rotating column, a first bearing seat is fixedly connected to the bottom of the fixed mounting plate, a third rotating column is rotationally connected to the first bearing seat, a fourth gear and a fifth gear are fixedly connected to the outer wall of the third rotating column, a second bearing seat is fixedly connected to the fixed mounting plate, a threaded rod is rotationally connected to the second bearing seat, the threaded rod is arranged at the bottom of the second rotating column, the second rotating column is coaxial, a sixth gear is fixedly connected to the outer wall of the threaded rod, the third gear is meshed with the fourth gear, the sixth gear is meshed with the fifth gear, the diameter of the third gear is larger than that of the fourth gear, and the diameter of the sixth gear is smaller than that of the fifth gear;
the outer wall threaded connection of threaded rod the limiting mechanism that makes the sliding plate only can be vertical from top to bottom is connected with on the fixed mounting plate for after making the cleaning post steadily shift up the preset position, move about.
Further, stop gear includes the slide bar, fixed mounting plate bottom fixedly connected with at least two slide bars, the slide bar cooperation spacing groove that runs through has been seted up from top to bottom vertically on the slide plate, each the equal spacing sliding connection of slide bar is in the slide bar cooperation spacing groove.
Further, type pulling plates are fixedly connected to the tops of the two sides of the second circular ring sliding box, the other ends of the type pulling plates are in limiting sliding connection with the fixed mounting plate, and the ends of the type pulling plates are connected with the sliding plate and used for enabling the sliding plate to move up and down to drive the second circular ring sliding box to move up and down.
Compared with the prior art, the invention has the beneficial effects that: the second circular ring sliding box is arranged to move up and down, so that the contact area of the second circular ring sliding box and the second indirect heat conduction circular tube is changed, and the fans with the same power, namely the fans in the same wind power state, can blow out wind with different temperatures by adjusting the second circular ring sliding box, so that the operation of various environments is facilitated;
the cleaning column can clean the designed solid ash on the inner wall of the special mechanism for adjusting the temperature, thereby realizing efficient temperature conduction operation;
the contact area required by the second circular sliding box can be judged according to the required air outlet temperature, so that the inner walls of the first indirect heat conduction circular tube and the second indirect heat conduction circular tube with certain heights are cleaned according to the height required to be raised by the second circular sliding box, and the design is more convenient for personnel to accurately clean the dust deposition at the special required position, but not clean the dust deposition at the part which is not subjected to heat conduction, so that the heat of the flue gas is more favorable to be saved, and the heat of the flue gas can be reused;
the indirect heat exchange device is a part of a heat transfer device, and can transfer the heat of the flue gas of the hot blast stove to a specific position by clean hot air;
the device has no electrical appliance design in the internal structure, and can safely and stably operate.
Drawings
The disclosure of the present invention is described with reference to the accompanying drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the invention. In the drawings, like reference numerals are used to refer to like parts. Wherein:
FIG. 1 schematically shows a schematic cross-sectional structure of a proposed device according to one embodiment of the present invention;
FIG. 2 schematically illustrates a first partial enlarged structural view of FIG. 1 in accordance with one embodiment of the present invention;
FIG. 3 schematically illustrates a second partial enlarged schematic view of FIG. 1 in accordance with one embodiment of the present invention;
FIG. 4 schematically shows a schematic view of the partial enlarged structure of FIG. 3 according to one embodiment of the invention;
FIG. 5 schematically illustrates a schematic bottom view of a first annular plate according to one embodiment of the present invention;
FIG. 6 schematically illustrates a second state diagram of FIG. 5, in accordance with one embodiment of the present invention;
FIG. 7 schematically illustrates a third state diagram of FIG. 5 in accordance with one embodiment of the present invention;
FIG. 8 schematically shows an enlarged schematic view of the structure at A according to one embodiment of the invention;
fig. 9 schematically shows an enlarged structural view at B according to an embodiment of the present invention;
fig. 10 schematically shows an enlarged structural view at C according to an embodiment of the present invention.
Reference numerals in the drawings: 1. flue gas transmission pipeline of hot-blast stove; 2. the first indirect heat conduction round tube; 3. a first gear; 4. a first motor; 5. a second gear; 6. a blower; 7. an external wind transfer pipe; 8. a fixed mounting plate; 9. a main smoke transmission pipeline; 10. the second indirect heat conduction round tube; 11. tie plates; 12. a sliding plate; 13. a threaded rod; 14. a second motor; 15. a first rotating column; 16. a conveyor chain; 17. a second rotating column; 18. sealing the chute; 19. a limit sliding sleeve; 20. a limit sliding rod; 21. a cleaning column; 22. cleaning a hot air outlet; 23. a second annular slide case; 24. a first ring fixing case; 25. cleaning the air inlet pipeline; 26. a first annular plate; 27. a multi-position connection plate; 28. a second baffle; 29. a third gear; 30. a first bearing seat; 31. a fourth gear; 32. a third rotating column; 33. a fifth gear; 34. a sixth gear; 35. a second annular plate; 36. a second bearing seat; 37. left and right limit sliding grooves; 38. a mating groove; 39. an extension strip; 40. a slide bar; 41. the slide bar is matched with the limit groove; 42. a third ring baffle; 43. a fourth baffle; 44. an air outlet; 45. sealing the channel; 46. a sealing gasket; 47. a disc; 48. a shuttle plate; 49. a second bump; 50. a notch; 51. a first bump; 52. an air inlet hole; 53. and a fourth rotating column.
Detailed Description
It is to be understood that, according to the technical solution of the present invention, those skilled in the art may propose various alternative structural modes and implementation modes without changing the true spirit of the present invention. Accordingly, the following detailed description and drawings are merely illustrative of the invention and are not intended to be exhaustive or to limit the invention to the precise form disclosed.
Embodiment one:
with reference to fig. 1-4 and fig. 10, the top of the hot blast stove flue gas transmission pipeline 1 of the hot blast stove is limited and rotationally connected with the first indirect heat conduction circular pipe 2, and the hot blast stove flue gas transmission pipeline 1 and the first indirect heat conduction circular pipe 2 are in sealed limited and rotationally connected for preventing the flue gas in the hot blast stove flue gas transmission pipeline 1 from leaking from the joint of the first indirect heat conduction circular pipe 2. The sealing limit rotation connection is assisted by a sealing ring and other mechanisms, and the technology is a common technical means and is not described.
The top of first indirect heat conduction pipe 2 is connected with second indirect heat conduction pipe 10, the diameter of second indirect heat conduction pipe 10 is greater than the diameter of first indirect heat conduction pipe 2, and second indirect heat conduction pipe 10 and first indirect heat conduction pipe 2 are integrated into one piece, the inner wall thickness of second indirect heat conduction pipe 10 and first indirect heat conduction pipe 2 equals for first indirect heat conduction pipe 2 and second indirect heat conduction pipe 10 can be stable give external heat conduction mechanism with flue gas heat conduction, heat conduction mechanism is first ring fixed box 24 and second ring slip case 23 herein promptly.
A fixed mounting plate 8 is arranged on the top of the second indirect heat conduction round tube 10. The fixed mounting plate 8 is a mechanism fixedly mounted on a wall surface or other fixed object, i.e., the fixed mounting plate 8 is kept stationary in the device. The second indirect heat conduction round tube 10 is in limited rotation connection with the bottom of the fixed mounting plate 8 and is sealed by the fixed mounting plate 8.
The top of the fixed mounting plate 8 is connected with a main flue gas transmission pipeline 9, and the main flue gas transmission pipeline 9 is communicated with a cavity of a second indirect heat conduction circular tube 10. And the main flue gas transmission pipeline 9 is close to the middle part of the cavity of the second indirect heat conduction circular tube 10. This allows a more uniform upward movement of the flue gas.
The first ring fixing box 24 is tightly attached to the outer wall of the first indirect heat conduction round tube 2. And the first ring holder 24 is secured to other external fixtures. I.e. the first ring-shaped stationary box 24 should remain stationary in the device, the first circular tube 2 being rotatable around the inner wall of the first ring-shaped stationary box 24. The first indirectly conductive circular tube 2 can transfer the heat of the flue gas to the first circular ring fixing box 24.
The inner cavity of the first ring fixing box 24 is fixedly connected with a third ring baffle 42 and a fourth baffle 43 sequentially from inside to outside, a ventilation notch is formed in the position, close to the top of the first ring fixing box 24, of the third ring baffle 42, and an air outlet 44 is formed in the fourth baffle 43. A plurality of clean air inlet pipelines 25 are communicated with the bottom of the first circular ring fixing box 24, and the clean air inlet pipelines 25 are uniformly distributed at the bottom of the first circular ring fixing box 24. The clean air inlet pipelines 25 are uniformly communicated with an external air conveying pipe 7, and the external air conveying pipe 7 is communicated with an output port of the fan 6. The gas entering the first ring fixing box 24 from the clean air inlet pipe 25 firstly enters the space formed by the inner wall of the first ring fixing box 24 and the third ring baffle 42, and then the gas conducts heat with the outer wall of the first indirect heat conduction round pipe 2. So that the gas in the first indirect heat conduction circular tube 2 has a certain temperature. The gas then moves out of the vent slot in the upper portion of the third ring baffle 42 and into the space between the third ring baffle 42 and the fourth baffle 43. And then removed from the air outlet 44 at this time and moved into the second annular slide box 23 through the air inlet 52 provided in the second annular slide box 23. The gas which realizes the preliminary heating in the first ring fixing case 24 is moved into the second ring sliding case 23. The two gaskets 46 are disposed at the upper and lower portions of the air outlet 44 and the air inlet 52, so that the air outlet 44 transmits air to the air inlet 52 without leakage. Thereby stably carrying out the stable gas transmission of the two objects. In the figure, the air outlet 44 and the air inlet 52 are relatively close to each other, and a certain distance should be provided during practical application, so that when the second circular ring sliding box 23 moves upwards for a certain distance, the first circular ring fixing box 24 can still stably transfer air into the second circular ring sliding box 23.
The inner side of the second circular sliding box 23 is closely attached to the outer wall of the second indirect heat conduction circular tube 10, and when the second circular sliding box 23 moves upwards, the area of the second circular sliding box 23 attached to the second indirect heat conduction circular tube 10 is increased. So that heat conduction is performed with a larger contact area, and the temperature of the gas placed in the second ring-shaped sliding box 23 is increased. The upper part of the second circular sliding box 23 is communicated with a plurality of clean hot air outlets 22 which are communicated together and used for blowing out clean hot air from the outside to carry out drying operation.
Such means can control the temperature of the air outlet of the clean hot air outlet 22 by controlling the upward moving distance of the second circular sliding box 23. When the temperature of the combustion products of the hot blast stove is inconvenient to adjust or the fan is inconvenient to adjust, the temperature can be controlled through an external transmission and exchange structure, so that the outgoing wind is wind with preset temperature.
Embodiment two: on the basis of the first embodiment, a technical means for removing fixed dust inside the first indirect heat conduction circular tube 2 and the second indirect heat conduction circular tube 10 is added.
Referring to fig. 4 with emphasis, the ash actually has a certain heat preservation effect, and at the position where heat conduction is not needed, the ash on the inner walls of the first indirect heat conduction circular tube 2 and the second indirect heat conduction circular tube 10 is not needed to be removed, so that the outgoing flue gas also has a certain heat quantity, and the heat quantity is convenient to reuse. But the locations where heat conduction is required are where it is desired to remove ash.
Referring to fig. 2 and 5, the second rotating column 17 is rotatably connected to the middle part of the fixed mounting plate 8, the outer wall of the second rotating column 17 arranged in the second indirect heat conduction round tube 10 is fixedly connected with the multi-position connecting plate 27, the bottoms of the multi-position connecting plates 27 are fixedly connected with the first annular plate 26, the second annular plate 35 and the circular disc 47 through connecting strips, and the first annular plate 26, the second annular plate 35 and the circular disc 47 are coaxial with the multi-position connecting plate 27, and the first annular plate 26, the second annular plate 35 and the circular disc 47 are arranged from outside to inside. The annular groove between the first annular plate 26 and the second annular plate 35 and the annular groove between the second annular plate 35 and the disc 47 are equal in width. Wherein the center of the disc 47 is also fixed to the outer wall of the second rotation column 17. The first annular plate 26, the second annular plate 35, the circular disc 47 and the like are arranged in a plane, and have the same thickness. The arrangement is such that the first annular plate 26, the second annular plate 35, and the disc 47, which are not in contact with each other, can be stably placed on the same plane and can be rotated synchronously.
Referring to fig. 5, a shuttle plate 48 is disposed in an annular groove between the second annular plate 35 and the disc 47, a fourth rotating column 53 is rotatably connected to the shuttle plate 48, one end of the fourth rotating column 53, which is far away from the shuttle plate 48, is fixedly connected or rotatably connected to the second baffle 28, a limiting sliding sleeve 19 is fixedly connected to the bottom of the second baffle 28, and a limiting sliding rod 20 is slidingly connected to the bottom of the limiting sliding sleeve 19 in a limiting up-down manner.
Referring to fig. 9, a sliding plate 12 is further disposed in the second indirect heat conduction round tube 10, two sliding rod matching limiting grooves 41 penetrating through are formed in the tops of two sides of the sliding plate 12, two sliding rods 40 are fixedly connected to the bottom of the fixed mounting plate 8, and the two sliding rods 40 are respectively disposed in the two sliding rod matching limiting grooves 41. I.e. the sliding plate 12 is connected with the sliding rod 40 in a sliding way by limiting up and down.
Referring to fig. 9, the slide plate 12 is provided with left and right limiting sliding grooves 37, the limiting slide rod 20 penetrates the left and right limiting sliding grooves 37, and the left and right limiting sliding grooves 37 are connected with each other in a sliding manner. In a more specific embodiment, the inner walls of the left and right limiting sliding grooves 37 are provided with matching grooves 38, the outer wall of the limiting sliding rod 20 is fixedly connected with an extension strip 39, and the extension strip 39 is in left and right limiting sliding connection in the matching grooves 38. The left and right limit sliding of the limit sliding rod 20 can be realized.
Referring to fig. 4, the bottom of the limit sliding rod 20 is rotatably connected with a cleaning column 21, and the outer wall of the cleaning column 21 is provided with a high-temperature-resistant cleaning wire, so that the deposited dust on the inner walls of the first indirect heat conduction circular tube 2 and the second indirect heat conduction circular tube 10 can be removed. The initial state cleaning post 21 is abutted against the inner wall of the first indirect heat conduction circular tube 2.
Referring to fig. 5, a first bump 51 is disposed on an outer wall of one side of the disc 47, a notch 50 is formed in a position, close to the first bump 51, of the second annular plate 35, and two sides of the notch 50 are inverted-eight-shaped. The first annular plate 26 is provided with a second projection 49 at a location adjacent to the notch 50.
With particular reference to fig. 5, it can be seen from the foregoing that the fourth rotating post 53 and the second shutter 28 are limited and can only move left and right. The second rotating column 17, the driving disc 47, the second annular plate 35 and the first annular plate 26 which rotate at this time synchronously rotate. During rotation of the second rotary column 17, the shuttle plate 48 is held in an annular groove intermediate the disc 47 and the second annular plate 35, i.e. the second shutter 28 is now relatively stationary. At one revolution of the second rotating post 17, the shuttle plate 48 will move from the first circular disc 47 and the annular groove intermediate the second circular plate 35 to the annular groove intermediate the second circular plate 35 and the first circular plate 26 along the notch 50. Thereby effecting a straight left movement of the fourth rotating post 53, the second shutter 28. When the second rotating column 17 is then rotated again, the shuttle plate 48 is now in the annular groove intermediate the second 35 and first 26 annular plates, and the second 28 stop plate is again held relatively stationary. When the second rotating post 17 is reversed for the number of turns to start rotation, the shuttle plate 48 can be returned to the original position.
Referring to fig. 8 with emphasis, the bottom of the second rotating post 17 is fixedly connected to the third gear 29. The bottom of the fixed mounting plate 8 is rotated by the second bearing 36 to connect the threaded rod 13, the second bearing 36 corresponds to an L-shaped plate, the top of which is fixedly connected to the bottom of the fixed mounting plate 8, the bottom is placed at the bottom of the third gear 29, and other rotating members are not affected. The specific size installation position is set in practical application, and other rotating structures of the device are not affected. The threaded rod 13 is concentric with the second rotating post 17. The outer wall of the threaded rod 13 is fixedly connected with a sixth gear 34. The bottom of the fixed mounting plate 8 is fixedly connected with a first bearing seat 30, and the first bearing seat 30 is equivalent to two L-shaped plates which are connected in sequence. The arrangement of the first bearing housing 30 does not affect other rotational structures. The first bearing seat 30 is rotatably connected with a third rotating column 32, and the outer wall of the third rotating column 32 is fixedly connected with a fourth gear 31 and a fifth gear 33. Wherein the third gear 29 and the fourth gear 31 are intermeshed. The sixth gear 34 and the fifth gear 33 are meshed with each other. The diameter of the third gear 29 is larger than the diameter of the fourth gear 31 and the diameter of the fifth gear 33 is larger than the diameter of the sixth gear 34. The second rotation post 17 for rotating one turn rotates the threaded rod 13 a plurality of turns.
With reference to fig. 2, the outer wall of the threaded rod 13 is in threaded connection with the sliding plate 12, and cooperates with self-limiting of the sliding plate 12, so that the sliding plate 12 can vertically move up and down under the cooperation of the rotating threaded rod 13.
With particular reference to fig. 2, the second motor 14 is mounted at the bottom of the side from which the fixed mounting plate 8 extends. The power output end of the second motor 14 is connected with the first rotating column 15, the second rotating column 17 is arranged at the top of the fixed mounting plate 8, and the outer wall of the first rotating column 15 is matched with the conveying chain 16 through the chain gear, so that the first rotating column 15 and the second rotating column 17 synchronously rotate.
Referring to fig. 3, the outer wall of the first indirect heat conduction round tube 2 is fixedly connected with a first gear 3, the power output end of the first motor 4 is connected with a second gear 5, and the second gear 5 and the first gear 3 are meshed with each other. So that the first indirectly conductive circular tube 2 can rotate circumferentially. And because the installation department of the first gear 3 is positioned at the junction of the hot blast stove flue gas transmission pipeline 1 and the first indirect heat conduction circular tube 2, the first indirect heat conduction circular tube 2 can be rotated more stably.
The other structure of this embodiment is the same as that of the first embodiment.
Embodiment III: on the basis of the second embodiment, a technical means for automatically adjusting the contact area between the second indirect heat conduction round tube 10 and the second ring sliding box 23 is added.
Referring to fig. 2, the two sides of the top of the second circular sliding box 23 are fixedly connected with type pulling plates 11, type pulling plates 11 are type, one end vertical rod of each pulling plate is fixedly connected with the top of the second circular sliding box 23, and the other end vertical rod is in limiting sliding connection with the sealing sliding groove 18 of the fixed mounting plate 8. The bottom of the other end of the pulling plate 11 is fixedly connected with the top of the sliding plate 12. I.e. how much the slide plate 12 and the cleaning post 21 are moved, the second circular slide box 23 is also moved at the same time by the same height.
Other structures of this embodiment are the same as those of the embodiment.
Fourth embodiment: and a technical means for preventing the electrical appliance from being damaged due to heating is added on the basis of the third embodiment.
The portion of the fixed mounting plate 8 where the second motor 14 is mounted is provided as a heat insulating section. I.e. the second motor 14 is not subjected to the temperature transmitted by the fixed mounting plate 8, resulting in a reduced lifetime due to the heating of the second motor 14. The second rotating post 17 is also provided with a heat insulation section at the position where the chain gear and the conveying chain 16 are installed, so that the conveying chain 16 cannot be deformed by heat to cause the failure of normal operation.
The part of the first indirect heat conduction round tube 2 where the first gear 3 is arranged is provided with a heat insulation layer for isolating heat from being transferred to the first gear 3. And the first gear 3 and the second gear 5 are both made of heat insulating materials. Thereby preventing the first motor 4 from being heated to cause a reduction in life. And other structural members in the device are made of heat-resistant materials. The telescopic structure of the limiting sliding sleeve 19 and the limiting sliding rod 20 is of an anti-blocking structure, so that the limiting sliding sleeve 19 is not blocked by accumulated ash on the limiting sliding rod 20. The threaded rod 13 is provided with a protective sleeve structure, and dust deposition influences the normal operation of the threaded rod 13. These protective measures should be installed more selectively according to the actual requirements.
Other structures of the present embodiment are the same as those of the embodiment.
In practice, the device is divided into two modes of operation. First mode of operation: adjusting the operation mode of the air outlet temperature of the clean hot air outlet 22; second mode of operation: and (3) ash removal operation mode.
First mode of operation: and the operation mode of adjusting the temperature of the air outlet of the clean hot air outlet 22.
The second motor 14 is started to drive the second rotating column 17 to rotate circumferentially through the conveying chain 16. Then, the second rotating post 17 drives the threaded rod 13 to rotate circumferentially under the rotation speed changing mechanism matched with the third gear 29, the fourth gear 31, the sixth gear 34 and the fifth gear 33. The rotating threaded rod 13 makes the sliding plate 12 move up and down through the threads and the self up and down limiting function of the sliding plate 12. The second circular ring sliding box 23 moves up and down by the cooperation of the pull plate 11, so that the contact area between the second circular ring sliding box 23 and the second indirect heat conduction round tube 10 is changed. The contact area is changed, so that the time of heat conduction is changed, and the clean hot air outlet 22 can blow out different temperatures of air when the fan 6 keeps the same power, so that the requirements of different environments can be met.
Second mode of operation: and (3) ash removal operation mode.
After the integrated first indirect heat conduction round tube 2 and second indirect heat conduction round tube 10 are used for a period of time, the heat conduction position needs to be cleaned, so that heat can be well transferred to the first ring fixing box 24 and the second ring sliding box 23. Specifically, the second rotating post 17 rotating one turn drives the threaded rod 13 to rotate a plurality of turns, so that the sliding plate 12 can vertically move upward by a preset distance. Then, when the second rotating column 17 rotates one turn faster, the cleaning column 21 closely attached to the inner wall of the first indirect heat conduction circular tube 2 moves to a point above the first indirect heat conduction circular tube 2. Continuing to rotate the second rotating column 17, the cleaning column 21 moves to the inner wall of the second indirect heat conduction round tube 10 under the cooperation of the shuttle plate 48, the first bump 51, the notch 50 and the second bump 49, and then continues to move vertically upwards.
In the actual ash removal operation, firstly, according to the temperature of the air blown out from the required clean hot air outlet 22, and then, according to the actual temperature detected by the temperature sensor at the clean hot air outlet 22, the ash accumulation height on the inner walls of the first indirect heat conduction circular tube 2 and the second indirect heat conduction circular tube 10 is judged, so that the preset temperature at the clean hot air outlet 22 can be discharged. The height of the inner soot cleaning can be judged according to the elevation of the second circular ring slide box 23.
The second motor 14 is turned off every time the preset height cleaning pole 21 is raised, and the first motor 4 is started to rotate the second gear 5. The meshing cooperation of the second gear 5 and the first gear 3 enables the first indirect heat conduction circular tube 2 and the second indirect heat conduction circular tube 10 to rotate, generally only enables the first indirect heat conduction circular tube 2 and the second indirect heat conduction circular tube 10 to rotate for one circle and then rotate for another circle, and at this time, the cleaning column 21 close to the inner wall of the first indirect heat conduction circular tube 2 cleans dust deposited on the inner wall of the first indirect heat conduction circular tube 2 under the rotation of the first indirect heat conduction circular tube 2. And then repeating the above actions to remove the deposited ash on the inner wall of the first indirect heat conduction circular tube 2. When reaching the second indirectly conductive circular tube 10, the cleaning post 21 also moves to the inner wall of the second indirectly conductive circular tube 10 under the action of the mechanism. The above actions are continuously repeated, so that the parts of the inner walls of the first indirect heat conduction circular tube 2 and the second indirect heat conduction circular tube 10, which need to be cleaned of accumulated dust, are cleaned, and the accumulated dust at other parts is not cleaned for heat preservation. So that the rest heat of the flue gas is preserved and reused as much as possible.
Such a setting judges the clearance deposition height according to the second ring slide case 23 of external rising height, more is convenient for personnel to carry out accurate stable deashing operation.
The technical scope of the present invention is not limited to the above description, and those skilled in the art may make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present invention, and these changes and modifications should be included in the scope of the present invention.
Claims (9)
1. An indirect heat exchange apparatus, comprising:
the sealing limiting rotation is connected with a first indirect heat conduction circular tube (2) on the outer wall of a flue gas transmission pipeline (1) of the hot blast stove, a second indirect heat conduction circular tube (10) with the diameter larger than that of the first indirect heat conduction circular tube (2) is communicated with the top of the first indirect heat conduction circular tube (2), the wall thickness of the first indirect heat conduction circular tube (2) is the same as that of the second indirect heat conduction circular tube (10), the first indirect heat conduction circular tube and the second indirect heat conduction circular tube are integrally formed, the top limiting rotation of the second indirect heat conduction circular tube (10) is connected with a fixed mounting plate (8), and a main flue gas transmission pipeline (9) is communicated with the fixed mounting plate (8);
the device comprises a first circular ring fixing box (24), wherein a second circular ring sliding box (23) is connected to the first circular ring fixing box (24) in a limiting sliding manner, the first circular ring fixing box (24) and the second circular ring sliding box (23) are respectively and tightly connected with the outer walls of a first indirect heat conducting circular tube (2) and a second indirect heat conducting circular tube (10), the heat of the first indirect heat conducting circular tube (2) and the heat of the second indirect heat conducting circular tube (10) are respectively and thermally conducted into the first circular ring fixing box (24) and the second circular ring sliding box (23), gas in a cavity of the first circular ring fixing box (24) is connected with gas in a cavity of the second circular ring sliding box (23) in a sealing communication manner, the bottom of the first circular ring fixing box (24) is communicated with a clean air inlet pipeline (25), the top of the second circular ring sliding box (23) is communicated with a clean hot air outlet (22), and an air outlet of the clean hot air outlet (22) is provided with a temperature sensor for detecting temperature; according to the required temperature of the air outlet of the clean hot air outlet (22), the contact area of the second circular ring sliding box (23) and the second indirect heat conduction circular tube (10) is adjusted, so that the temperature of the air outlet of the clean hot air outlet (22) is adjusted;
the first indirect heat conduction circular tube (2) is connected with a rotation mechanism for enabling the first indirect heat conduction circular tube (2) to rotate around the hot blast stove flue gas transmission pipeline (1);
a limiting sliding rod (20) is arranged in the heat exchange device formed by the second indirect heat conduction circular tube (10) and the first indirect heat conduction circular tube (2), a cleaning column (21) is rotationally connected to the bottom of the limiting sliding rod (20), and the heat exchange device further comprises a driving mechanism, wherein the driving mechanism enables the cleaning column (21) to move up and down close to the inner walls of the first indirect heat conduction circular tube (2) and the second indirect heat conduction circular tube (10);
the self-rotation mechanism is matched with the driving mechanism, so that the cleaning wire on the outer wall of the cleaning column (21) can carry out ash removal operation on the contact part of the first circular ring fixing box (24) and the first indirect heat conduction circular tube (2) and the contact part of the second circular ring sliding box (23) and the second indirect heat conduction circular tube (10).
2. An indirect heat exchange device according to claim 1, further comprising a fan (6), wherein an external air conveying pipe (7) is communicated with the output end of the fan (6), a plurality of clean air inlet pipelines (25) are uniformly arranged at the bottom of the first circular ring fixing box (24), and the clean air inlet pipelines (25) are communicated with the external air conveying pipe (7) and are used for uniformly feeding air into the first circular ring fixing box (24).
3. An indirect heat exchange device according to claim 2, wherein a third ring baffle (42) and a fourth baffle (43) are fixedly connected in sequence from inside to outside in the first ring fixed box (24) so that the first ring fixed box (24) is divided into three spaces, a gas flow opening is formed in the inner top of the third ring baffle (42) and the inner top of the first ring fixed box (24), an air outlet (44) is formed in the fourth baffle (43), a sealing channel (45) is formed in one end, far away from the third ring baffle (42), of the fourth baffle (43), a limit sliding connection is formed in the space between the outer wall of the first ring fixed box (24) and the fourth baffle (43), two sealing gaskets (46) are fixedly connected to one side, close to the fourth baffle (43), of the second ring sliding box (23) is in limit sliding connection in the sealing channel (45), the second ring sliding box (23) is in sealing connection with the sealing channel (45), the sealing channel (52) is in sealing connection with the sealing channel (46) on one side, close to the sealing channel (52) of the second ring sliding box (23), and the sealing channel (52) are in communication with the air inlet (52), so that the gas in the first annular fixed box (24) is sealed and enters the second annular sliding box (23).
4. An indirect heat exchange device according to claim 3 wherein the rotation mechanism comprises a first gear (3) and a first motor (4), the outer wall of the first indirect heat conduction round tube (2) close to the bottom is fixedly connected with the first gear (3), the power output end of the first motor (4) is connected with a second gear (5), and the second gear (5) is meshed with the first gear (3).
5. An indirect heat exchange device according to claim 4 wherein the driving mechanism comprises a sliding plate (12), the sliding plate (12) is connected with the limiting sliding rod (20) in a left-right limiting sliding manner through a left-right limiting sliding groove (37), an up-down moving mechanism for enabling the sliding plate (12) to move up and down is arranged on the sliding plate (12), and a left-right moving mechanism for enabling the limiting sliding rod (20) to move left and right is arranged on the limiting sliding rod.
6. An indirect heat exchange device according to claim 5, wherein the left-right moving mechanism comprises a second rotating column (17), the second rotating column (17) is connected to the fixed mounting plate (8) in a limiting rotation manner, the second rotating column (17) is arranged on the outer wall in the second indirect heat conduction round tube (10) and is fixedly connected with a multi-position connecting plate (27), the bottom of the multi-position connecting plate (27) is fixedly connected with a first annular plate (26), a second annular plate (35) and a disc (47) which are concentric and arranged on the same plane, the first annular plate (26), the second annular plate (35) and the disc (47) are sequentially connected from outside to inside, the annular groove width between the first annular plate (26) and the second annular plate (35) is equal to the annular groove width between the second annular plate (35) and the disc (47), a shuttle plate (48) is slidingly arranged in the annular groove, the middle of the shuttle plate (48) is rotationally connected with a second baffle (28) through a fourth rotating column (53), and the bottom of the second annular plate (35) is fixedly connected with a limiting sliding sleeve (19), and the limiting sliding sleeve (19) is slidingly connected with the bottom limiting sliding sleeve (20);
the outer wall of one side of the disc (47) is provided with a first bump (51), a notch (50) is formed in the position, close to the first bump (51), of the second annular plate (35), two sides of the notch (50) are in a reverse splayed shape, a second bump (49) is formed in the position, close to the notch (50), of the first annular plate (26), the second annular plate (35) and the disc (47) are driven by a rotating multi-position connecting plate (27) to synchronously rotate, and the second baffle (28), the limiting sliding sleeve (19) and the limiting sliding rod (20) which are limited by left and right are matched, so that when the multi-position connecting plate (27) rotates for one circle, a shuttle plate (48) arranged in a ring groove moves into the other ring groove from the notch (50), and the second baffle (28), the limiting sliding sleeve (19), the limiting sliding rod (20) and the cleaning column (21) move to one side in the process of moving into the other ring groove from the notch (50), and the left and right movement is realized;
the device further comprises a second motor (14), wherein a power output end of the second motor (14) is connected with a first rotating column (15), and the first rotating column (15) and a second rotating column (17) synchronously rotate through the cooperation of a chain gear and a transmission chain (16).
7. An indirect heat exchange device according to claim 6 wherein the up-down movement mechanism comprises a third gear (29), a third gear (29) is fixedly connected to the bottom outer wall of the second rotation column (17), a first bearing seat (30) is fixedly connected to the bottom of the fixed mounting plate (8), a third rotation column (32) is rotatably connected to the first bearing seat (30), a fourth gear (31) and a fifth gear (33) are fixedly connected to the outer wall of the third rotation column (32), a second bearing seat (36) is fixedly connected to the fixed mounting plate (8), a threaded rod (13) is rotatably connected to the second bearing seat (36), the threaded rod (13) is arranged at the bottom of the second rotation column (17), and the second rotation column (17) is coaxial, a sixth gear (34) is fixedly connected to the outer wall of the threaded rod (13), the third gear (29) is meshed with the fourth gear (31) mutually, the sixth gear (34) is meshed with the fifth gear (33) mutually, and the diameter of the third gear (29) is larger than the diameter of the fifth gear (33);
the outer wall threaded connection of threaded rod (13) sliding plate (12), be connected with on fixed mounting panel (8) and make sliding plate (12) only can vertical stop gear from top to bottom for after making cleaning post (21) steadily shift up the preset position, move about.
8. An indirect heat exchange device according to claim 7 wherein the limiting mechanism comprises sliding rods (40), at least two sliding rods (40) are fixedly connected to the bottom of the fixed mounting plate (8), through sliding rod matching limiting grooves (41) are vertically formed in the sliding plate (12), and each sliding rod (40) is in limiting sliding connection with the sliding rod matching limiting groove (41).
9. An indirect heat exchange device according to claim 8 wherein the top parts of two sides of the second circular ring sliding box (23) are fixedly connected with type pulling plates (11), the other ends of the type pulling plates (11) are in limited sliding connection with the fixed mounting plate (8), and the end parts are connected with the sliding plates (12) so that the up-and-down movement of the sliding plates (12) drives the second circular ring sliding box (23) to move up and down.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311182162.7A CN116952038B (en) | 2023-09-14 | 2023-09-14 | Indirect heat exchange device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311182162.7A CN116952038B (en) | 2023-09-14 | 2023-09-14 | Indirect heat exchange device |
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| CN116952038A CN116952038A (en) | 2023-10-27 |
| CN116952038B true CN116952038B (en) | 2023-12-08 |
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| Publication number | Publication date |
|---|---|
| CN116952038A (en) | 2023-10-27 |
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