CN114608317A - Tunnel furnace with energy recycling system - Google Patents
Tunnel furnace with energy recycling system Download PDFInfo
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- CN114608317A CN114608317A CN202210240110.XA CN202210240110A CN114608317A CN 114608317 A CN114608317 A CN 114608317A CN 202210240110 A CN202210240110 A CN 202210240110A CN 114608317 A CN114608317 A CN 114608317A
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- 238000004064 recycling Methods 0.000 title claims abstract description 13
- 238000011084 recovery Methods 0.000 claims abstract description 69
- 238000001816 cooling Methods 0.000 claims abstract description 54
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 21
- 238000004891 communication Methods 0.000 claims description 8
- 210000001503 joint Anatomy 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 238000009413 insulation Methods 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
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000000630 rising effect Effects 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
- 238000005485 electric heating Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Tunnel Furnaces (AREA)
- Furnace Details (AREA)
Abstract
The invention discloses a tunnel furnace with an energy recovery and reuse system, which comprises an inlet section, a furnace container body, an energy recovery section and an outlet section which are sequentially connected, wherein the energy recovery section comprises a cooling channel body and an energy recovery 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 used for conveying a heat-conducting medium is arranged between the energy recovery area and the energy utilization area, the energy recovery area is provided with a medium inlet used for inputting the heat-conducting medium, the energy utilization area is provided with a medium outlet used for discharging the heat-conducting medium, and the medium inlet or the medium outlet is provided with a power part used for driving the heat-conducting medium to flow. The invention provides a tunnel furnace with an energy recycling system, which can recycle energy and achieve a better energy-saving effect.
Description
Technical Field
The invention relates to the field of tunnel furnaces, in particular to a tunnel furnace with an energy recycling system.
Background
The tunnel furnace is commonly used for carrying out hot working on workpiece products, including but not limited to brazing, heat treatment, sintering and the like, and as shown in fig. 7, most of process curves of the tunnel furnace basically consist of three stages of temperature rising, heat preservation and temperature reduction, workpieces enter a furnace pipe from an inlet section to be heated and heated, a heating element provides heat in the temperature rising process, the workpieces are kept at a certain temperature in the temperature preservation stage, and a heat-conducting medium is generally used for carrying out heat exchange and cooling in the temperature reduction 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 energy recuperation system of recycling adopts following technical scheme:
the utility model provides a tunnel furnace with energy recuperation system of recycling, is including 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 energy recuperation district of cooling channel body outside, the entering section includes the entering channel body, sets up in the energy utilization district of entering channel body outside, be provided with the energy transport body that is used for carrying heat-conducting medium between energy recuperation district and the energy utilization district, energy recuperation district has the medium inlet port that is used for inputing heat-conducting medium, the energy utilization district has the medium discharge port that is used for discharging heat-conducting medium, medium inlet port or medium discharge port are provided with the power spare that is used for driving heat-conducting medium flow.
Optionally, the energy transfer body includes a transfer passage body and a transfer insulating layer disposed outside the transfer passage body, and the transfer passage body is communicated with the energy recovery area and the energy utilization area.
Optionally, the conveying channel body penetrates through the furnace body, and the conveying insulating layer is arranged in the furnace body and covers the outside of the conveying channel body.
Optionally, the energy recovery area and the energy utilization area both include a heat exchange cavity disposed outside the inlet passage body or outside the cooling passage body, a guide plate connected to an inner wall of the heat exchange cavity, and a heat exchange insulating layer disposed on an outer wall of the heat exchange cavity, heat exchange areas are formed between the heat exchange cavity and the outside of the inlet passage body, between the heat exchange cavity and the outside of the cooling passage body, and the guide plate is spirally disposed in the heat exchange areas.
Optionally, the guide plate includes a plurality of guide segmented plates which are sequentially arranged along the spiral direction, each guide segmented plate is connected between the outer wall of the channel body and the inner wall of the heat exchange cavity, and adjacent guide segmented plates are connected in a butt joint mode.
Optionally, energy recovery temperature sensors are disposed at positions where the medium inlet and the energy recovery area are connected to the energy conveying body, and energy utilization temperature sensors are disposed at positions where the medium outlet and the energy utilization area are connected to the energy conveying body.
Optionally, the power component 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 a temperature difference between the medium inlet and the energy recovery area at the position where the energy delivery body is connected.
Optionally, a cooling section is arranged between the energy recovery area and the furnace container body, and cooling cavities for circulating cooling media are arranged on the outer walls of the outlet section and the cooling section.
Optionally, the guide plate includes a spiral framework body and an expansion piece sleeved outside the framework body, the expansion piece is provided with a communication valve communicated with the outside, and the communication valve is a one-way valve.
Optionally, the flow guide plate has elasticity, elastic sealing layers are respectively arranged between the flow guide plate and the inner wall of the heat exchange cavity, between the flow guide plate and the outer wall of the cooling channel body or between the flow guide plate and the outer wall of the inlet channel body, a circulating body is arranged at one end of the flow guide plate, the circulating body enables the heat exchange area to be communicated with the outside through a medium inlet or a medium outlet, the circulating body is connected with a sliding part, the sliding part is connected to the outside of the heat exchange cavity in a sealing and sliding manner, and the sliding part slides on the outer wall of the heat exchange cavity to enable the circulating body to drive the flow guide plate to stretch.
In summary, one of them is: according to the process curve characteristic of the tunnel furnace, air is used as a heat-conducting medium and introduced into the energy recovery area, the heat-conducting medium flows in the spiral heat exchange area and fully exchanges heat with a workpiece still having a higher temperature in the cooling channel body, the temperature of the heat-conducting medium rises, the heat-conducting medium is conveyed to the energy utilization area by the energy conveying body, the heat-conducting medium with the higher temperature flows in the heat exchange area of the energy utilization area and exchanges heat with the workpiece entering the channel body, so that the workpiece can be preheated, and the temperature can rise to a certain temperature before entering the furnace liner body, therefore, the heat load of a heating element in the furnace liner body can be reduced, the energy consumption is reduced, and the energy-saving effect is achieved.
The second step is as follows: the utilization is spiral guide plate, can increase heat transfer route and increase heat transfer area, reduces the dead angle of water conservancy diversion, makes heat-conducting medium can carry out the heat exchange fully, promotes the effect of heat exchange.
And thirdly: the variable frequency fan is utilized, the power of the fan can be adjusted according to the temperature values of all points, different preheating or cooling requirements are met, and meanwhile, the overall energy recycling condition can be measured and calculated by monitoring the temperature values of all points 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 example 1.
Fig. 2 is a sectional view of the tunnel furnace with the energy recovery and reuse system of the embodiment 1, which is mainly used for showing an energy utilization area and an energy recovery area.
Fig. 3 is a sectional view of the tunnel furnace with the energy recovery and reuse system of the embodiment 2, which is mainly used for showing an energy utilization area and an energy recovery area.
Fig. 4 is a sectional view of the tunnel furnace with the energy recovery and reuse system of the embodiment 3, which is mainly used for showing an energy utilization area and an energy recovery area.
Fig. 5 is a sectional view of the tunnel furnace with the energy recovery and reuse system according to the embodiment 4, which is mainly used for showing the energy utilization area and the energy recovery area.
Fig. 6 is a sectional view of the tunnel furnace with the energy recovery and reuse system according to the embodiment 5, which is mainly used for showing the energy utilization area and the energy recovery area.
Fig. 7 is a process chart of this example 1.
Description of reference numerals:
1. entering a section; 11. entering the channel body; 12. an energy utilization zone; 2. a furnace chamber body; 3. an energy recovery section; 31. a cooling passage body; 32. an energy recovery zone; 4. an outlet section; 5. a conveying device; 6. an energy delivery body; 61. a conveyance passage body; 62. conveying the heat-insulating layer; 71. a heat exchange cavity; 72. a baffle; 721. a flow guide sectional plate; 722. a skeleton body; 723. an expansion member; 724. a one-way valve; 73. a heat exchange and insulation layer; 8. a media entry 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. cooling the cavity; 16. mounting grooves; 17. a sealing strip; (ii) a 18. An elastomeric sealing layer; 19. a flow-through body; 20. a seal ring; 21. a slider; 22. a sliding groove; 23. a fixing member; 24. and (7) positioning the holes.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The embodiment of the application discloses a tunnel furnace with an energy recycling system.
Example 1
A tunnel furnace with an energy recovery and reuse system, refer to FIG. 1, comprising an inlet section 1, a furnace liner body 2, an energy recovery section 3, an outlet section 4 and a conveying device 5 which are connected in sequence, wherein the energy recovery section 3 comprises a cooling channel body 31, an energy recovery area 32 arranged outside the cooling channel body 31, two ends of the cooling channel body 31 are respectively connected with the furnace liner body 2 and the outlet section 4, the inlet section 1 comprises an inlet channel body 11 and an energy utilization area 12 arranged outside the inlet channel body 11, the inlet channel body 11 is connected with one end of the furnace liner body 2 far away from the energy recovery section 3, an energy conveying body 6 for conveying a heat-conducting medium is arranged between the energy recovery area 32 and the energy utilization area 12, the heat-conducting medium exchanges heat with a high-temperature workpiece in the energy recovery area 32 to raise the temperature, the high-temperature heat-conducting medium is introduced into the energy utilization area 12 through the energy conveying body 6, so that the workpiece can be preheated before entering the furnace pipe body 2.
The furnace pipe body 2 is a muffle, the furnace pipe body 2 is provided with a passage for the workpiece to pass through, and the length direction of the furnace pipe body 2 is generally horizontal. The two ends of the furnace container body 2 are provided with flange plates, the outer layer of the furnace container body 2 is a heat-insulating layer made of aluminum silicate heat-insulating cotton, a plurality of heating elements 13 are arranged in the furnace container body 2 along the length direction of the furnace container body, the heating elements 13 are electric heating wires, and the heating elements 13 adjust the heating temperature of the heating elements 13 by changing pulse signals.
The end of the inlet channel body 11 facing the furnace pipe body 2 is provided with a flange plate, and the inlet channel body 11 is fixedly connected with one end of the furnace pipe body 2 through the flange plate. The inlet channel body 11 can be horizontal on the same straight line with the furnace pipe body 2, the inlet channel body 11 can also be inclined, and forms a certain angle with the furnace pipe body 2, and the cold work piece is sent into the inlet channel body 11 by the conveying device 5.
The cooling duct body 31 also has a flange at its end facing the furnace body 2, and the cooling duct body 31 is fixedly connected to one end of the furnace body 2 via the flange. The cooling gallery 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 plate, the outlet section 4 can be inclined, and the conveying device 5 conveys the workpiece out of 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 passage body 11 or outside the cooling passage body 31, a guide plate 72 connected to an inner wall of the heat exchange cavity 71, and a heat exchange insulating layer 73 disposed on an outer wall of the heat exchange cavity 71, the inlet passage body 11, and the cooling passage body 31 have square or circular cross sections, the cross section of the heat exchange cavity 71 is larger than the cross sections of the inlet passage body 11 and the cooling passage body 31, and the heat exchange cavity 71 is disposed on the periphery of the inlet passage body 11 or the cooling passage body 31. Heat exchange areas are formed among the heat exchange cavity 71, the inlet channel body 11, the heat exchange cavity 71 and the cooling channel body 31, and the guide plate 72 is spiral and is arranged in the heat exchange areas.
The two sides of the baffle 72 are respectively connected to the inner wall of the heat exchange cavity 71 and the outer wall of the inlet channel body 11 or the cooling channel body 31, and the baffle 72 forms a spiral heat exchange channel in the heat exchange area for the heat transfer medium to flow therein.
A medium inlet channel 8 is arranged at the end of the heat exchange cavity 71 of the energy recovery area 32, which end is far away from the furnace body 2, the medium inlet channel 8 is communicated with the heat exchange area, and the medium inlet channel 8 is provided with a medium inlet 81 communicated with the outside. A medium discharge channel 9 is arranged at one end of the heat exchange cavity 71 of the energy utilization area 12, which is far away from the furnace pipe body 2, the medium discharge channel 9 is communicated with the heat exchange area, and the medium discharge channel 9 is provided with a medium discharge port 91 communicated with the outside. The heat exchange cavity 71 of the energy recovery area 32 and the heat exchange cavity 71 of the energy utilization area 12 are provided with a communication port communicated with the energy transmission body 6 at one end close to the furnace container body 2.
Referring to fig. 1, the energy transporting body 6 includes a transporting passage body 61 and a transporting insulation layer 62 disposed outside the transporting passage body 61, the transporting passage body 61 is communicated with the communicating ports of the energy recovery area 32 and the energy utilization area 12, in another embodiment, the transporting passage body 61 is inserted into the furnace body, the transporting insulation layer 62 is disposed in the furnace body and covers the outside of the transporting passage body 61, and then the transporting insulation layer 62 can be directly applied to the insulation of the furnace container body 2.
The medium discharge channel 9 is provided with a power part 10, the power part 10 is a variable frequency fan, an air inlet of the variable frequency fan is communicated with the medium discharge port 91, external low-temperature air can enter the energy recovery area 32 through the variable frequency fan, and then the air is discharged from the medium discharge port 91 through the energy transmission whole body 6 and the energy utilization area 12.
In order to be able to monitor the temperature, energy recovery temperature sensors are provided at the medium inlet 81 and at the location where the energy recovery zone 32 is connected to the energy carrier 6, and energy utilization temperature sensors are provided at the medium outlet 91 and at the location where the energy utilization zone 12 is connected to the energy carrier 6. The temperature of the heat-conducting medium entering the energy recovery area 32 and the temperature of the heat-conducting medium after passing through the energy recovery area 32 can be monitored through the two energy recovery temperature sensors, and the energy recovery efficiency can be obtained by measuring and calculating the two temperature differences. The controller is used for carrying out difference comparison calculation on 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 which correspond to one another one by one and the frequency of the variable frequency fan are stored in the database, when the difference value of the two energy recovery temperature sensors is within one of the temperature range values, the controller calls the frequency of the corresponding variable frequency fan in the database to control the variable frequency fan to reach the corresponding frequency, and therefore 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 dashed 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, which can be preheated before entering the interior of the furnace shell 2, so that the energy consumption of the heating element 13 is reduced.
Example 2
The utility model provides a tunnel furnace with energy recuperation system of recycling, refer to fig. 1 and fig. 3, with embodiment 1's difference lies in, in order to facilitate the installation guide plate 72, guide plate 72 includes polylith water conservancy diversion section board 721 that sets gradually along its helical direction to all offer at the outer wall of entering passageway body 11 and cooling channel body 31 and the inner wall of heat transfer cavity 71 and be spiral mounting groove 16, all inlay on two relative lateral walls of mounting groove 16 and be equipped with sealing strip 17, the relative both sides wall of water conservancy diversion section board 721 butts respectively in sealing strip 17. In order to improve the sealing performance between the adjacent flow guide segmented plates 721, a sealing element is arranged between the two adjacent flow guide segmented plates 721, the sealing element is in a long strip shape, two sides of the sealing element are respectively provided with a groove used for clamping and embedding the side wall of the flow guide segmented plate 721, and two 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
A tunnel furnace with an energy recovery and reuse system is shown in figure 4, and is different from the embodiment 1 in that a cooling section 14 is arranged between an energy recovery area 32 and a furnace container body 2, cooling cavities 15 are arranged on the outer walls of the cooling section 14 and an outlet section 4, each cooling cavity 15 is provided with an inlet and an outlet, the inlets and the outlets are respectively connected through pipelines, cooling water can be introduced into the pipelines, and therefore 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 the process curve of an actual product.
Example 4
Referring to fig. 5, a tunnel furnace with an energy recycling system is different from that of embodiment 1 in that a guide plate 72 includes a spiral frame body 722, and an expansion member 723 sleeved outside the frame body 722, the expansion member 723 is provided with a communication valve communicated with the outside, the communication valve is a one-way valve 724 capable of conducting only inwards, the expansion member 723 has a deformation capability, the expansion member 723 is fixed to upper and lower edges of the frame body 722, and the expansion member 723 is abutted to an inner wall of a heat exchange cavity 71 and an outer wall of an inlet channel body 11 or a cooling channel body 31. When the cooling rate of the workpiece needs to be slowed down, the communication valve is opened to allow external air to enter the expansion member 723, so that the volume of the expansion member 723 is increased, the spiral heat exchange space is reduced, and the amount of the heat transfer medium passing through is reduced.
Example 5
A tunnel furnace with an energy recycling system is different from that of the embodiment 1 in that, referring to FIG. 6, a guide plate 72 is spiral and elastic, one end of the guide plate 72 is fixedly connected to a cooling passage body 31 or the outer wall of one end of an entering passage body 11 close to a furnace pipe body 2, and the guide plates 72 are close to each other and the thread pitch is reduced without external force. The cross section of the guide plate 72 is circular, the elastic sealing layer 18 is arranged outside the guide plate 72, the elastic sealing layer 18 is abutted between the guide plate 72 and the inner wall of the heat exchange cavity 71 and also arranged between the guide plate 72 and the cooling channel body 31 or the outer wall of the inlet channel body 11, and the elastic sealing layer 18 is in sealing sliding connection with the inner wall of the heat exchange cavity 71, the outer wall of the cooling channel body 31 and the outer wall of the inlet channel body 11. The end of the guide plate 72 far away from the furnace pipe body 2 is provided with a circulating body 19, the circulating 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 circulating body 19 of the energy recovery area 32, the medium outlet 91 is arranged on the circulating body 19 of the energy utilization area 12, and the circulating body 19 enables the heat exchange area of the part of the guide plate 72 far away from the furnace pipe body 2 to be communicated with the outside through the medium inlet 81 or the medium outlet 91. The circulating body 19 is integrally formed with a sealing ring 20, and an outer wall of the sealing ring 20 is in sliding contact with an inner wall of the heat exchange cavity 71 and an outer wall of the cooling passage body 31 or the inlet passage body 11. The circulating body 19 is connected with a sliding part 21 which is 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 mode, and the sliding part 21 slides on the outer wall of the heat exchange cavity 71 to enable the circulating body 19 to drive the guide plate 72 to stretch and retract, so that the thread pitch of the guide plate 72 is changed, and the quantity of heat-conducting media passing through is changed. A fixing member 23 is inserted into the sliding member 21, and a plurality of positioning holes 24 for inserting the bottom of the fixing member 23 are formed in 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 preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a tunnel furnace with energy recuperation system of recycling which characterized in that: comprises an inlet section (1), a furnace liner body (2), an energy recovery section (3) and an outlet section (4) which are connected in sequence, the energy recovery section (3) comprises a cooling channel body (31) and an energy recovery area (32) arranged outside the cooling channel body (31), the inlet section (1) comprises an inlet channel body (11) and an energy utilization area (12) arranged outside the inlet channel body (11), an energy conveying body (6) for conveying heat-conducting media is arranged between the energy recovery area (32) and the energy utilization area (12), the energy recovery region (32) has a medium inlet opening (81) for the introduction of a heat transfer medium, the energy utilization zone (12) has a medium outlet opening (91) for discharging a heat transfer medium, the medium inlet (81) or the medium outlet (91) is provided with a power piece (10) for driving the heat-conducting medium to flow.
2. The tunnel furnace with the energy recovery and reuse system according to claim 1, wherein: 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. The tunnel furnace with the energy recovery and reuse system according to claim 2, wherein: the conveying channel body (61) penetrates through the furnace container body (2), and the conveying heat-insulating layer (62) is arranged in the furnace container body (2) and covers the conveying channel body (61).
4. The tunnel furnace with the energy recovery and reuse system according to claim 1, wherein: the energy recovery area (32) and the energy utilization area (12) respectively comprise a heat exchange cavity (71) arranged outside the inlet 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 insulating 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 inlet 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.
5. The tunnel furnace with the energy recovery and reuse system according to claim 4, wherein: the guide plate (72) comprises a plurality of guide sectional plates (721) which are sequentially arranged along the spiral direction of the guide plate, each guide sectional 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 sectional plates (721) are connected in a butt joint mode.
6. The tunnel furnace with the energy recovery and reuse system according to claim 1, wherein: energy recovery temperature sensors are arranged at the positions where the medium inlet (81) and the energy recovery area (32) are connected to the energy conveying body (6), and energy utilization temperature sensors are arranged at the positions where the medium outlet (91) and the energy utilization area (12) are connected to the energy conveying body (6).
7. The tunnel furnace with the energy recovery and reuse system according to claim 1, wherein: the power part (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).
8. The tunnel furnace with the energy recovery and reuse system according to claim 1, wherein: a cooling section (14) is arranged between the energy recovery area (32) and the furnace container 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).
9. The tunnel furnace with the energy recovery and reuse system according to claim 4, wherein: the guide plate (72) comprises a spiral framework body (722) and an expansion piece (723) sleeved outside the framework body (722), the expansion piece (723) is provided with a communication valve communicated with the outside, and the communication valve is a one-way valve (724).
10. The tunnel furnace with the energy recovery and reuse system according to claim 4, wherein: the heat exchange device is characterized in that the flow guide plate (72) is elastic, elastic sealing layers (18) are arranged between the flow guide plate (72) and the inner wall of the heat exchange cavity (71), between the flow guide plate (72) and the outer wall of the cooling channel body (31) or between the flow guide plate (72) and the outer wall of the inlet channel body (11), one end of the flow guide plate (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 and 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 flow guide plate (72) to stretch.
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| CN114608317B (en) | 2023-11-07 |
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