CN114608317B - Tunnel furnace with energy recycling system - Google Patents
Tunnel furnace with energy recycling system Download PDFInfo
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- CN114608317B CN114608317B CN202210240110.XA CN202210240110A CN114608317B CN 114608317 B CN114608317 B CN 114608317B CN 202210240110 A CN202210240110 A CN 202210240110A CN 114608317 B CN114608317 B CN 114608317B
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- 238000004064 recycling Methods 0.000 title claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 55
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 238000011084 recovery Methods 0.000 claims description 62
- 238000007789 sealing Methods 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 13
- 238000004321 preservation Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 238000009413 insulation Methods 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/40—Arrangements of controlling or monitoring devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
- F27B2009/122—Preheating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
- F27B2009/124—Cooling
Abstract
The application discloses a tunnel furnace with an energy recycling system, which comprises an inlet section, a furnace liner body, an energy recycling section and an outlet section which are sequentially connected, wherein the energy recycling section comprises a cooling channel body and an energy recycling area arranged outside the cooling channel body, the inlet section comprises an inlet channel body and an energy utilization area arranged outside the inlet channel body, an energy conveying body for conveying heat conducting media is arranged between the energy recycling area and the energy utilization area, the energy recycling area is provided with a medium inlet for inputting the heat conducting media, the energy utilization area is provided with a medium outlet for discharging the heat conducting media, and the medium inlet or the medium outlet is provided with a power piece for driving the heat conducting media to flow. The tunnel furnace with the energy recycling system can recycle energy, and achieves a better energy-saving effect.
Description
Technical Field
The application relates to the field of tunnel furnaces, in particular to a tunnel furnace with an energy recycling system.
Background
Tunnel furnaces are commonly used for hot working of workpiece products, including but not limited to brazing, heat treatment, sintering, etc., and referring to fig. 7, most of the process curves of tunnel furnaces basically consist of three stages of heating, heat preservation and cooling, wherein a workpiece enters the furnace from an inlet section to be heated, and in the heating process, heat is provided by a heating element, the workpiece is kept at a certain temperature in the heat preservation stage, and heat exchange cooling is generally performed by using a heat conducting medium in the cooling process.
In a common water cooling mode, the cooling water directly takes away the heat of the processed workpiece, so that energy waste is caused.
Disclosure of Invention
In order to recycle the energy of the heat conducting medium, the application provides a tunnel furnace with an energy recycling system.
The application provides a tunnel furnace with an energy recycling system, which adopts the following technical scheme:
the utility model provides a tunnel furnace with energy recuperation system of recycling, includes the entering section, the furnace courage body, energy recuperation section, the export section that connect gradually, the energy recuperation section includes the cooling channel body, sets up in the outside energy recuperation district of cooling channel body, the entering section is including the entering channel body, set up in the outside energy utilization district of entering channel body, be provided with the energy conveyer body that is used for carrying heat conduction medium between energy recuperation district and the energy utilization district, the energy recuperation district has the medium inlet port that is used for the input heat conduction medium, the energy utilization district has the medium discharge port that is used for discharging heat conduction medium, medium inlet port or medium discharge port are provided with the power piece that is used for driving heat conduction medium to flow.
Optionally, the energy conveying body comprises a conveying channel body and a conveying heat-insulating layer arranged outside the conveying channel body, and the conveying channel body is communicated with the energy recovery area and the energy utilization area.
Optionally, the conveying channel body is arranged in the furnace body in a penetrating way, and the conveying heat-insulating layer is arranged in the furnace body and is coated outside the conveying channel body.
Optionally, the energy recovery area and the energy utilization area all include set up in the outside heat transfer cavity of entering channel body outside or cooling channel body outside, connect in the guide plate of heat transfer cavity inner wall, set up in the heat transfer heat preservation of heat transfer cavity outer wall, all be formed with the heat transfer area between the outside of heat transfer cavity and entering channel body, heat transfer cavity and the cooling channel body outside, the guide plate spiral sets up in the heat transfer area.
Optionally, the guide plate includes the polylith water conservancy diversion segmentation board that sets gradually along its spiral direction, and every water conservancy diversion segmentation board all is connected between the outer wall of the passageway body and the inner wall of heat transfer cavity, butt between the adjacent water conservancy diversion segmentation board.
Optionally, the medium inlet and the energy recovery area are both provided with energy recovery temperature sensors at the positions connected with the energy delivery body, and the medium outlet and the energy utilization area are both provided with energy utilization temperature sensors at the positions connected with the energy delivery body.
Optionally, the power piece is a variable frequency fan, an air inlet of the variable frequency fan is communicated with the medium outlet, and the variable frequency fan is configured to adjust the air speed according to the temperature difference between the medium inlet and the position of the energy recovery zone, which is connected with the energy conveying body.
Optionally, be provided with the cooling section between energy recuperation district and the stove courage body, the outer wall of export section and cooling section all is provided with the cooling cavity that is used for circulating cooling medium.
Optionally, the guide plate includes the skeleton body that is spiral, the expansion piece of cover outside the skeleton body, the expansion piece is provided with the communication valve that communicates in outside, the communication valve is the check valve.
Optionally, the guide plate has elasticity, between guide plate and the heat transfer cavity inner wall, between guide plate and the cooling channel outer wall or get into the channel outer wall and all be provided with the elastic sealing layer, the one end of guide plate is provided with the circulation body, the circulation body makes heat transfer area and outside intercommunication through medium inlet port or medium discharge port, the circulation body is connected with the slider, slider sealing sliding connection is in the outside of heat transfer cavity, the slider slides at the heat transfer cavity outer wall and makes the circulation body drive the guide plate flexible.
To sum up, one of them: aiming at the characteristic of a process curve of the tunnel furnace, air is taken as a heat conducting medium to be introduced into an energy recovery area, the heat conducting medium flows in a spiral heat exchange area and fully exchanges heat with a workpiece with higher temperature in a cooling channel body, the temperature of the heat conducting medium rises, the heat conducting medium is conveyed to an energy utilization area by an energy conveying body, the heat conducting medium with higher temperature flows in the heat exchange area of the energy utilization area and exchanges heat with the workpiece in the channel body, so that the workpiece can be preheated and can rise to a certain temperature before entering a furnace liner body, thereby reducing the heat load of a heating element in the furnace liner body, reducing energy consumption and playing an energy-saving effect.
And two,: by using the spiral guide plate, the heat exchange path can be increased, the heat exchange area can be increased, the dead angle of guide can be reduced, the heat conducting medium can fully exchange heat, and the heat exchange effect can be improved.
And thirdly,: the power of the fan can be adjusted according to the temperature value of each point by utilizing the variable frequency fan, different preheating or cooling requirements are met, and meanwhile, the overall energy recycling condition can be calculated by monitoring the temperature value of each point and the power of the variable frequency fan.
Drawings
Fig. 1 is a schematic view of a tunnel furnace with an energy recovery and reuse system according to embodiment 1.
Fig. 2 is a sectional view of the tunnel furnace with the energy recovery and reuse system of embodiment 1 mainly for showing the energy utilization area and the energy recovery area.
Fig. 3 is a sectional view of the tunnel furnace with the energy recovery and reuse system of embodiment 2 mainly for showing the energy utilization area and the energy recovery area.
Fig. 4 is a sectional view of the tunnel furnace with energy recovery and reuse system of embodiment 3 mainly for showing the energy utilization area and the energy recovery area.
Fig. 5 is a sectional view of the tunnel furnace with the energy recovery and reuse system of this embodiment 4 mainly for showing the energy utilization area and the energy recovery area.
Fig. 6 is a sectional view of the tunnel furnace with energy recovery and reuse system of this embodiment 5 mainly for showing the energy utilization area and the energy recovery area.
Fig. 7 is a process diagram of the present example 1.
Reference numerals illustrate:
1. entering a section; 11. entering the channel body; 12. an energy utilization zone; 2. a furnace pipe body; 3. an energy recovery section; 31. a cooling channel body; 32. an energy recovery zone; 4. an outlet section; 5. a conveying device; 6. an energy delivery body; 61. a conveying channel body; 62. conveying the heat preservation layer; 71. a heat exchange cavity; 72. a deflector; 721. a deflector segment plate; 722. a skeleton body; 723. an expansion member; 724. a one-way valve; 73. a heat exchange and insulation layer; 8. a medium entering the channel; 81. a media inlet port; 9. a medium discharge passage; 91. a medium discharge port; 10. a power member; 13. a heating element; 14. a cooling section; 15. a cooling cavity; 16. a mounting groove; 17. a sealing strip; the method comprises the steps of carrying out a first treatment on the surface of the 18. An elastic sealing layer; 19. a flow-through body; 20. a seal ring; 21. a slider; 22. a sliding groove; 23. a fixing member; 24. and positioning holes.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings.
The embodiment of the application discloses a tunnel furnace with an energy recycling system.
Example 1
Referring to fig. 1, the tunnel furnace with the energy recycling system comprises an entering section 1, a furnace body 2, an energy recycling section 3, an outlet section 4 and a conveying device 5 which are sequentially connected, wherein the energy recycling section 3 comprises a cooling channel body 31 and an energy recycling area 32 arranged outside the cooling channel body 31, two ends of the cooling channel body 31 are respectively connected with the furnace body 2 and the outlet section 4, the entering section 1 comprises an entering channel body 11 and an energy utilization area 12 arranged outside the entering channel body 11, the entering channel body 11 is connected with one end, far away from the energy recycling section 3, of the furnace body 2, an energy conveying body 6 for conveying a heat conducting medium is arranged between the energy recycling area 32 and the energy utilization area 12, the heat conducting medium conducts heat exchange between the energy recycling area 32 and a high-temperature workpiece, and the temperature of the heat conducting medium is increased, and the high-temperature heat conducting medium is led into the energy utilization area 12 through the energy conveying body 6, so that the workpiece can be preheated before entering the furnace body 2.
The furnace body 2 is a muffle, the furnace body 2 is provided with a passage for the workpiece to pass through, and the length direction of the furnace body 2 is generally horizontal. The two ends of the furnace body 2 are both provided with flange plates, the outer layer of the furnace body 2 is an insulating layer made of aluminum silicate insulating cotton, a plurality of heating elements 13 are arranged in the furnace body 2 along the length direction of the furnace body, the heating elements 13 are electric heating wires, and the heating temperature of the heating elements 13 is adjusted by changing pulse signals through the heating elements 13.
The end of the entering channel body 11 facing the furnace pipe body 2 is provided with a flange plate, and the entering channel body 11 is fixedly connected with one end of the furnace pipe body 2 through the flange plate. The entering channel body 11 can be horizontal on the same straight line with the furnace pipe body 2, the entering channel body 11 can also be inclined, a certain angle is formed between the entering channel body 11 and the furnace pipe body 2, and a cold workpiece is fed into the entering channel body 11 through the conveying device 5.
The cooling channel body 31 is provided with a flange at one end facing the furnace body 2, and the cooling channel body 31 is fixedly connected with one end of the furnace body 2 through the flange. The cooling channel body 31 is generally horizontal. The outlet section 4 is fixedly connected to one end, far away from the furnace pipe body 2, of the cooling channel body 31 through a flange, the outlet section 4 can be inclined, and the conveying device 5 sends workpieces out from one end, far away from the furnace pipe body 2, of the outlet section 4.
Referring to fig. 1 and 2, the energy recovery area 32 and the energy utilization area 12 each include a heat exchange cavity 71 disposed outside the inlet channel 11 or outside the cooling channel 31, a baffle 72 connected to an inner wall of the heat exchange cavity 71, and a heat exchange insulation layer 73 disposed on an outer wall of the heat exchange cavity 71, wherein the cross sections of the heat exchange cavity 71, the inlet channel 11 and the cooling channel 31 are square or circular, the cross section of the heat exchange cavity 71 is larger than the cross section of the inlet channel 11 and the cooling channel 31, and the heat exchange cavity 71 is disposed on the periphery of the inlet channel 11 or the cooling channel 31. Heat exchange areas are formed between the heat exchange cavity 71 and the outside of the inlet channel 11, the heat exchange cavity 71 and the cooling channel 31, and the guide plates 72 are spiral and arranged in the heat exchange areas.
The two sides of the deflector 72 are respectively connected to the inner wall of the heat exchange cavity 71 and the outer wall of the inlet channel 11 or the cooling channel 31, and the deflector 72 forms a spiral heat exchange channel in the heat exchange area for the heat conducting medium to flow therein.
A medium inlet channel 8 is provided at the end of the heat exchange chamber 71 of the energy recovery zone 32 remote from the furnace body 2, the medium inlet channel 8 being in communication with the heat exchange zone, and the medium inlet channel 8 having a medium inlet 81 in communication with the outside. A medium discharge channel 9 is provided at the end of the heat exchange chamber 71 of the energy utilization zone 12 remote from the furnace body 2, the medium discharge channel 9 being in communication with the heat exchange zone, the medium discharge channel 9 having a medium discharge port 91 in communication with the outside. The heat exchange cavity 71 of the energy recovery zone 32 and the heat exchange cavity 71 of the energy utilization zone 12 are provided with a communication port communicated with the energy conveying body 6 at one end close to the furnace pipe body 2.
Referring to fig. 1, the energy transmission body 6 includes a transmission channel body 61 and a transmission heat insulation layer 62 provided outside the transmission channel body 61, the transmission channel body 61 is communicated with the communication port between the energy recovery area 32 and the energy utilization area 12, in another embodiment, the transmission channel body 61 is provided in a furnace body in a penetrating manner, and the transmission heat insulation layer 62 is disposed in the furnace body and is coated outside the transmission channel body 61, so that the transmission heat insulation layer 62 can be directly applied to heat insulation of the furnace body 2.
The power piece 10 is installed at the medium discharge channel 9, the power piece 10 is a variable frequency fan, the air inlet of the variable frequency fan is communicated with the medium discharge port 91, and the air with low temperature outside can enter the energy recovery area 32 through the variable frequency fan and then is discharged from the medium discharge port 91 through the energy conveying body 6 and the energy utilization area 12.
In order to be able to monitor the temperature, both the medium inlet 81 and the energy recovery zone 32 are provided with energy recovery temperature sensors at the location where they are connected to the energy transmission body 6, and both the medium outlet 91 and the energy utilization zone 12 are provided with energy utilization temperature sensors at the location where they are connected to the energy transmission body 6. The temperature of the heat conducting medium when entering the energy recovery zone 32 and the temperature after passing through the energy recovery zone 32 can be monitored by two energy recovery temperature sensors, and the energy recovery efficiency can be obtained by measuring and calculating two temperature differences. The two energy recovery temperature sensors are electrically connected with a controller, the controller is also electrically connected with the variable frequency fans, the two energy recovery temperature sensors are respectively electrically connected with the signal input end of the controller, the energy recovery temperature sensors transmit the detected temperature values to the controller in real time, the controller is used for comparing and calculating the difference value of the temperature values transmitted by the two energy recovery temperature sensors, an established database is arranged in the controller, a plurality of groups of temperature range values corresponding to one and the frequencies of the variable frequency fans are stored in the database, and when the difference value of the two energy recovery temperature sensors is within one of the temperature range values, the controller invokes the frequencies of the corresponding variable frequency fans in the database to control the variable frequency fans to achieve corresponding frequencies, so that the wind speed is changed to realize cooling at different speeds.
The preheating temperature of the workpiece can be measured by measuring the temperature difference between the two energy utilization temperature sensors, so that the heat load of the heating element 13 can be reduced, and the energy consumption can be reduced. Referring to fig. 7, the broken line of the inlet section is a conventional process curve, and the solid line of the inlet section is a process curve of the present embodiment, so that preheating can be performed before entering the interior of the furnace body 2, and the energy consumption of the heating element 13 can be reduced.
Example 2
Referring to fig. 1 and 3, a tunnel furnace with an energy recovery and reuse system is different from embodiment 1 in that, in order to facilitate installation of a baffle 72, the baffle 72 includes a plurality of baffle segment plates 721 sequentially arranged along a spiral direction thereof, and spiral installation grooves 16 are respectively provided on outer walls of an inlet channel 11 and a cooling channel 31 and inner walls of a heat exchange cavity 71, sealing strips 17 are respectively embedded on two opposite side walls of the installation grooves 16, and two opposite side walls of the baffle segment plates 721 are respectively abutted against the sealing strips 17. In order to improve the tightness between the adjacent diversion segment plates 721, a sealing element is arranged between the two adjacent diversion segment plates 721, the sealing element is in a strip shape, both sides of the sealing element are provided with a groove for clamping the side wall of the diversion segment plate 721, and both ends of the sealing element are respectively abutted against the bottom walls of the upper mounting groove 16 and the lower mounting groove 16, so that the sealing performance is improved.
Example 3
The tunnel furnace with the energy recovery and reuse system, referring to fig. 4, is different from embodiment 1 in that a cooling section 14 is provided between an energy recovery zone 32 and a furnace body 2, cooling cavities 15 are provided at outer walls of the cooling section 14 and an outlet section 4, the cooling cavities 15 have an inlet and an outlet, the inlet and the outlet are respectively connected through pipes, and cooling water can be introduced into the pipes, so that the number of the cooling sections 14 can be selectively increased or cooling circulating water can be introduced into the outlet section 4 according to a process curve of an actual product.
Example 4
Referring to fig. 5, a tunnel furnace with an energy recovery and reuse system is different from embodiment 1 in that a baffle 72 includes a spiral frame 722, an expansion member 723 sleeved outside the frame 722, the expansion member 723 is provided with a communication valve communicated with the outside, the communication valve is a one-way valve 724 which can be conducted only inwards, the expansion member 723 has deformability, the expansion member 723 is fixed to the upper and lower edges of the frame 722, and the expansion member 723 abuts against the inner wall of a heat exchange cavity 71 and the outer wall of an inlet channel 11 or a cooling channel 31. When the cooling rate of the work needs to be slow, the communication valve is opened to allow outside air to enter the expansion member 723, and the volume of the expansion member 723 is increased, so that the spiral heat exchanging space is reduced, and the amount of heat transfer medium passing through is reduced.
Example 5
A tunnel furnace with an energy recovery and reuse system is different from embodiment 1 in that, referring to fig. 6, the baffle 72 is spiral and has elasticity, one end of the baffle 72 is fixedly connected to the cooling channel body 31 or one end outer wall of the inlet channel body 11 near the furnace pipe body 2, and the baffles 72 are mutually close to each other and the screw pitch is reduced without external force. The cross section of guide plate 72 is circular, and the outside of guide plate 72 all is provided with elastic sealing layer 18, and elastic sealing layer 18 butt is between guide plate 72 and heat transfer cavity 71 inner wall, also sets up between guide plate 72 and cooling channel body 31 or entering channel body 11 outer wall, and elastic sealing layer 18 and heat transfer cavity 71 inner wall, cooling channel body 31 outer wall, entering channel body 11 outer wall all are sealed sliding connection. The end of the deflector 72 away from the furnace chamber 2 is provided with a flow-through body 19, the flow-through body 19 is arranged in the heat exchange cavity 71 and the heat exchange insulating layer 73 (not shown in fig. 6) in a penetrating manner, the medium inlet 81 is arranged on the flow-through body 19 of the energy recovery area 32, the medium outlet 91 is arranged on the flow-through body 19 of the energy utilization area 12, and the flow-through body 19 enables the heat exchange area of the deflector 72 furthest away from the furnace chamber 2 to be communicated with the outside through the medium inlet 81 or the medium outlet 91. The circulation body 19 is integrally formed with a seal ring 20, and the outer wall of the seal ring 20 is slidably abutted against the inner wall of the heat exchange cavity 71, and is slidably abutted against the outer wall of the cooling channel body 31 or the inlet channel body 11. The circulation body 19 is connected with a sliding part 21 parallel to the length direction of the heat exchange cavity 71, the sliding part 21 is connected in a sliding groove 22 outside the heat exchange cavity 71 in a sealing sliding manner, and the sliding part 21 slides on the outer wall of the heat exchange cavity 71 to enable the circulation body 19 to drive the guide plate 72 to stretch and retract, so that the screw pitch of the guide plate 72 is changed, and the passing amount of a heat conducting medium is changed. The fixing piece 23 is arranged on the sliding piece 21 in a penetrating way, and a plurality of positioning holes 24 used for penetrating the bottom of the fixing piece 23 are arranged on the bottom wall of the sliding groove 22 of the heat exchange cavity 71 along the length direction of the heat exchange cavity 71.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (8)
1. A tunnel furnace with energy recovery system of recycling, its characterized in that: the energy recovery device comprises an entering section (1), a furnace liner body (2), an energy recovery section (3) and an outlet section (4) which are sequentially connected, wherein the energy recovery section (3) comprises a cooling channel body (31) and an energy recovery zone (32) arranged outside the cooling channel body (31), the entering section (1) comprises an entering channel body (11) and an energy utilization zone (12) arranged outside the entering channel body (11), an energy conveying body (6) for conveying heat conducting media is arranged between the energy recovery zone (32) and the energy utilization zone (12), the energy recovery zone (32) is provided with a media inlet (81) for inputting the heat conducting media, the energy utilization zone (12) is provided with a media outlet (91) for discharging the heat conducting media, and the media inlet (81) or the media outlet (91) is provided with a power piece (10) for driving the heat conducting media to flow; the energy recovery area (32) and the energy utilization area (12) comprise a heat exchange cavity (71) arranged outside the entering channel body (11) or outside the cooling channel body (31), a guide plate (72) connected to the inner wall of the heat exchange cavity (71) and a heat exchange heat preservation layer (73) arranged on the outer wall of the heat exchange cavity (71), heat exchange areas are formed between the heat exchange cavity (71) and the outside of the entering channel body (11) and between the heat exchange cavity (71) and the outside of the cooling channel body (31), and the guide plate (72) is spirally arranged in the heat exchange areas; the guide plate (72) comprises a spiral framework (722) and an expansion piece (723) sleeved outside the framework (722), wherein the expansion piece (723) is provided with a communication valve communicated with the outside, and the communication valve is a one-way valve (724).
2. A tunnel furnace with energy recovery and reuse system according to claim 1, characterized in that: the energy conveying body (6) comprises a conveying channel body (61) and a conveying heat-insulating layer (62) arranged outside the conveying channel body (61), and the conveying channel body (61) is communicated with the energy recovery area (32) and the energy utilization area (12).
3. A tunnel furnace with energy recovery and reuse system according to claim 2, characterized in that: the conveying channel body (61) penetrates through the furnace pipe body (2), and the conveying heat-insulating layer (62) is arranged in the furnace pipe body (2) and is coated outside the conveying channel body (61).
4. A tunnel furnace with energy recovery and reuse system according to claim 3, characterized in that: the guide plates (72) comprise a plurality of guide segmented plates (721) which are sequentially arranged along the spiral direction of the guide plates, each guide segmented plate (721) is connected between the outer wall of the channel body and the inner wall of the heat exchange cavity (71), and adjacent guide segmented plates (721) are abutted.
5. A tunnel furnace with energy recovery and reuse system according to claim 1, characterized in that: the medium inlet (81) and the energy recovery zone (32) are respectively provided with an energy recovery temperature sensor at the position where the energy recovery zone is connected with the energy conveying body (6), and the medium outlet (91) and the energy utilization zone (12) are respectively provided with an energy utilization temperature sensor at the position where the energy conveying body (6) is connected.
6. A tunnel furnace with energy recovery and reuse system according to claim 1, characterized in that: the power piece (10) is a variable frequency fan, an air inlet of the variable frequency fan is communicated with the medium outlet (91), and the variable frequency fan is configured to adjust the air speed according to the temperature difference between the medium inlet (81) and the position where the energy recovery area (32) is connected with the energy conveying body (6).
7. A tunnel furnace with energy recovery and reuse system according to claim 1, characterized in that: a cooling section (14) is arranged between the energy recovery area (32) and the furnace pipe body (2), and cooling cavities (15) for circulating cooling media are arranged on the outer walls of the outlet section (4) and the cooling section (14).
8. A tunnel furnace with energy recovery and reuse system according to claim 4, characterized in that: the air deflector is characterized in that the air deflector (72) is elastic, an elastic sealing layer (18) is arranged between the air deflector (72) and the inner wall of the heat exchange cavity (71) and between the air deflector (72) and the outer wall of the cooling channel body (31) or the outer wall of the entering channel body (11), one end of the air deflector (72) is provided with a circulating body (19), the circulating body (19) enables the heat exchange area to be communicated with the outside through a medium inlet (81) or a medium outlet (91), the circulating body (19) is connected with a sliding piece (21), the sliding piece (21) is connected to the outside of the heat exchange cavity (71) in a sealing sliding mode, and the sliding piece (21) slides on the outer wall of the heat exchange cavity (71) to enable the circulating body (19) to drive the air deflector (72) to stretch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210240110.XA CN114608317B (en) | 2022-03-12 | 2022-03-12 | Tunnel furnace with energy recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210240110.XA CN114608317B (en) | 2022-03-12 | 2022-03-12 | Tunnel furnace with energy recycling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114608317A CN114608317A (en) | 2022-06-10 |
| CN114608317B true CN114608317B (en) | 2023-11-07 |
Family
ID=81863625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202210240110.XA Active CN114608317B (en) | 2022-03-12 | 2022-03-12 | Tunnel furnace with energy recycling system |
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| CN114608317A (en) | 2022-06-10 |
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