CN109536679B - Cover type annealing furnace - Google Patents
Cover type annealing furnace Download PDFInfo
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- CN109536679B CN109536679B CN201811615209.3A CN201811615209A CN109536679B CN 109536679 B CN109536679 B CN 109536679B CN 201811615209 A CN201811615209 A CN 201811615209A CN 109536679 B CN109536679 B CN 109536679B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
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- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention relates to the technical field of annealing equipment, and discloses a cover type annealing furnace which comprises an outer cover, an inner cover and a furnace bottom pedestal, wherein the outer cover and the inner cover are covered on the furnace bottom pedestal, a heat exchange cavity is arranged between the outer cover and the inner cover, a water spray nozzle for spraying water to the heat exchange cavity is arranged on the outer cover, an air cooling device is arranged in the inner cover and comprises an air cooling pipeline, an upper cooling disc and an intercooling column which is integrated with the upper cooling disc, the bottom surface of the upper cooling disc is attached to the upper surface of a copper pipe coil and is provided with an upper cold air port, the intercooling column is inserted into the axis of the copper pipe coil, an intercooling air port is arranged on the surface facing the inner wall of the copper pipe coil, the air cooling cavity communicated with the upper cold air port and the intercooling air port is arranged in the upper cooling disc and the intercooling column, an air inlet communicated with. According to the invention, under the action of air pressure, the air penetrates through the copper pipe coil from the center of the copper pipe coil through the gaps between the copper pipes by using the medium-cold air port, so that the interior of the copper pipe coil is well cooled.
Description
Technical Field
The invention belongs to the technical field of annealing equipment, and particularly relates to a hood-type annealing furnace.
Background
The copper pipe is generally annealed for a plurality of times in the processing process, and common annealing equipment comprises a trolley type annealing furnace, a box type annealing furnace, a well type annealing furnace, a cover type annealing furnace and the like.
The chinese patent publication No. CN106119478A discloses a hood-type annealing furnace, which comprises an annealing furnace outer cover, an annealing furnace inner cover, a furnace bottom pedestal, a furnace platform fan, a material column and a material tray; the annealing furnace outer cover and the annealing furnace inner cover are both arranged at the top of the furnace bottom pedestal; the furnace platform fan is arranged at the bottom of the furnace bottom pedestal, and an output shaft of the furnace platform fan penetrates through the furnace bottom pedestal and is fixed with a fan impeller; the material column is a hollow column, is vertically fixed on the pedestal of the furnace bottom, and covers the fan impeller in the material column; the charging tray is wound on the side wall of the material column in an annular mode and is communicated with the material column, through holes are uniformly formed in the surface of the charging tray, and positioning buckles are vertically and upwards arranged in the radial direction. The invention has more excellent heat preservation effect, effectively carries out heat treatment on the casting, and is beneficial to reducing heat consumption and reducing treatment cost.
The annealing process comprises the processes of temperature rise, heat preservation and temperature reduction. When annealing begins, at first wind into hollow column copper pipe with the copper pipe and roll up, tie up the copper pipe book with the belt again, prevent that the copper pipe book from scattering, put the copper pipe book on the stove bottom pedestal of bell-type annealing stove, cover inner cover and dustcoat in proper order, then let in inert gas or nitrogen gas to the inner cover and with the oxygen-containing air in the evacuation inner cover, after the intensification keeps warm and lets in cooling medium between inner cover and the dustcoat, carry out the heat exchange through the inner cover to cool off the copper pipe in the inner cover.
Because the copper pipe is coiled, the surface of the copper pipe coil has better heat dispersion effect during heat exchange, but the contact effect between the inside of the copper pipe coil and a gas medium is poor, so that the heat dissipation effect is poor. After long-time cooling discharging often occurs, the internal temperature of the copper pipe coil is still high, and oxidation occurs after the copper pipe coil is contacted with the external air.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a hood-type annealing furnace which can well cool the inner part of a copper pipe coil and prevent the oxidation phenomenon of the copper pipe after air enters the copper pipe because the inner temperature of the copper pipe coil is still high after the copper pipe coil is discharged from the furnace.
The technical purpose of the invention is realized by the following technical scheme: a cover type annealing furnace comprises an outer cover, an inner cover and a furnace bottom pedestal, wherein the outer cover and the inner cover are arranged on the furnace bottom pedestal in a covering mode, a heat exchange cavity is formed between the outer cover and the inner cover, a water spray nozzle for spraying water to the heat exchange cavity is formed in the outer cover, an air cooling device is arranged in the inner cover and comprises an air cooling pipeline, an upper cooling disc and an inter-cooling column, the inter-cooling column is integrally arranged with the upper cooling disc, the bottom surface of the upper cooling disc is tightly attached to the upper surface of a copper pipe coil and provided with an upper cold air port, the inter-cooling column is inserted into the axis of the copper pipe coil, an inter-cooling air port is arranged on the surface of the inner wall of the copper pipe coil, the air cooling cavity is simultaneously communicated with the upper cold air port and the intermediate cold air port, an air inlet communicated with the air cooling cavity is formed in the upper cooling disc.
Through adopting the above technical scheme, during the use, utilize the air-cooled pipeline to import cold wind in the air-cooled cavity, cold wind blows to the upper surface that the copper pipe was rolled up through last cold wind mouth, cold wind blows to copper pipe spool axle center department through well cold wind mouth, cold wind passes through the outside flow in space between the copper pipe shaft, thereby take away the heat on the copper pipe, promote the heat transfer process that is located on the inside copper pipe shaft of copper pipe book, thereby the homogeneity of copper pipe book cooling has been promoted, moreover, the steam generator is simple in structure, make during the ejection of compact, the inside temperature of copper pipe book can be lower, avoided copper pipe book material after because inside copper pipe temperature is high and take place the drawback of oxidation with the contact.
Further setting the following steps: the air-cooled air conditioner is characterized in that the air-cooled cavity is internally provided with an air conditioning piece, the air conditioning piece comprises an air conditioning sheet and an air conditioning spring, the cross section of the air-cooled cavity is T-shaped and comprises an upper cooling cavity and an inter-cooling cavity which are perpendicular to each other, the bottom end of the air-cooled pipeline and the inter-cooling column are coaxially arranged, the diameter of the bottom end of the air-cooled pipeline is smaller than that of the inter-cooling cavity, the air conditioning sheets are circumferentially distributed along the axis of the inter-cooling column, the bottom ends of the air conditioning sheets are rotatably connected with the bottom wall of the upper cooling cavity, the distance between the top ends of the two opposite air conditioning sheets is smaller than the diameter of the communication part of the air-cooled pipeline and the upper cooling cavity, the air conditioning spring is positioned in an area surrounded by the air.
By adopting the technical scheme, the resistance of the air at the copper pipe reel center in the process of passing through the copper pipe coil is larger, the resistance of the air blown out from the intercooling cavity is larger, so that the air adjusting sheet rotates towards the direction far away from the intercooling cavity, more air in the air cooling pipeline is blown into the intercooling cavity in more proportion, the pressure of cold air blown out from the lower cold air port is larger, the cold air can easily pass through the copper pipe coil from inside to outside, the heat on the copper pipe coil can be better taken out, and the heat dissipation effect on the copper pipe body inside the copper pipe coil can be achieved; when the air adjusting sheet rotates towards the direction far away from the intercooling cavity, the air adjusting spring is gradually stretched, and the air adjusting sheet can block and buffer the rotation.
Further setting the following steps: the surface of the air adjusting piece facing the axis of the upper cooling cavity is provided with a spherical caulking groove, a spherical clamping block is embedded in the spherical caulking groove, and the top end of the air adjusting spring is connected with the spherical clamping block.
Through adopting above-mentioned technical scheme, when the adjustment sheet rotated, the universal rotation of spherical fixture block was under the effort of accent wind spring and accent wind piece for the one end that accent wind spring and spherical fixture block are connected also can rotate thereupon.
Further setting the following steps: and a support ring is arranged in the upper cooling cavity, is positioned in an area enclosed by the air adjusting sheet and can support the air adjusting sheet rotating towards the direction of the middle cooling cavity in a propping manner.
By adopting the technical scheme, the supporting ring supports the air adjusting piece in an abutting mode, the deflection angle of the air adjusting piece to the intercooling cavity is limited, and cold air can be blown into the intercooling cavity instead of being completely blocked by the air adjusting piece.
Further setting the following steps: the support ring is fixedly connected with the inner wall of the intercooling cavity through a suspension bracket, the suspension bracket comprises a fixed rod which is fixed in the intercooling cavity and positioned above the air adjusting sheet, a first height adjusting rod which is arranged on the fixed rod, a second height adjusting rod which is arranged in the first height adjusting rod in a penetrating mode and a locking bolt, the locking bolt is in threaded connection with the first height adjusting rod, the bottom end of the locking bolt can be tightly abutted against the second height adjusting rod, and the support ring is fixed at the bottom end of the second height adjusting rod.
By adopting the technical scheme, the height of the support ring can be adjusted up and down, so that the deflection angle of the air adjusting piece to the intercooling cavity is adjusted; during adjustment, firstly, the locking bolt is loosened, then the second height adjusting rod is moved along the length direction of the first height adjusting rod, the locking bolt is screwed again, the total length of the first height adjusting rod and the second height adjusting rod is changed, and therefore the height of the support ring is changed.
Further setting the following steps: the vertical section of the furnace bottom pedestal is in a convex shape; the outer cover is arranged on the edge of the base of the furnace bottom; the inner cover is installed at the top surface step of the furnace bottom pedestal, the outer wall of the inner cover is provided with a spiral cooling groove, and the bottom wall of the spiral cooling groove is provided with a cold water flow channel.
Through adopting above-mentioned technical scheme, be used for installing the annealing stove dustcoat in the edge of stove bottom pedestal, install the annealing stove inner cover in the top surface step department of stove bottom pedestal, the spiral cooling bath can increase the heat transfer area of inner cover and heat transfer cavity, the cold water runner can let the water that spouts in the heat transfer cavity get into the cold water runner of spiral cooling bath top position, and flow downwards along the cold water runner, last the heat transfer with the inner cover outer wall when flowing, the heat transfer time of partial cold water with the inner cover has been increased, the waste of cold water has been reduced, a large amount of cold water quantity has been practiced thrift.
Further setting the following steps: the furnace bottom pedestal is provided with a placing frame, and the placing frame is provided with a net-shaped supporting structure for placing the copper pipe coil.
Through adopting above-mentioned technical scheme, netted bearing structure can make the bottom surface of copper pipe book can with the better contact of the medium gas in the inner cover, promote the cooling effect of the cooling of copper pipe book bottom.
Further setting the following steps: and a graphite fiber gasket is placed on the reticular supporting structure.
Through adopting above-mentioned technical scheme, the weight of copper pipe book is great, and the effort between the copper pipe of bottom and the netted bearing structure is great, makes the copper pipe of bottom warp easily, cushions the graphite fiber cushion in copper pipe circle bottom, has increased the holding area to the copper pipe of bottom has been protected.
Further setting the following steps: an air exhaust pipeline is arranged on the furnace bottom pedestal, and a plurality of air injection pipes distributed along the length direction of the air exhaust pipeline are arranged on the air exhaust pipeline.
Through adopting above-mentioned technical scheme, during the use, with the one end of the copper pipe that jet-propelled pipe access copper pipe was rolled up to let in inert gas or nitrogen gas in to the copper pipe, roll up inside oxygen-containing air to the copper pipe and carry out the evacuation, and continue to inside input inert gas or nitrogen gas to the inner cover, with the oxygen-containing air in the evacuation inner cover, it makes the copper pipe take place the oxidation to remain oxygen when preventing to anneal, simple structure, the evacuation is effectual.
Further setting the following steps: the inner cover is provided with an air exhaust pipeline communicated with the inner part of the inner cover, and the air exhaust pipeline penetrates out of the outer cover and is connected with a vacuum pump.
Through adopting above-mentioned technical scheme, bleed to inner cover inside through evacuation pump, exhaust tube for the inside air of inner cover can be discharged, gets rid of the oxygen-containing air in the inner cover, avoids copper pipe and residual oxygen effect when annealing, takes place the oxidation.
In conclusion, the invention has the following beneficial effects:
1. when the copper pipe coil cooling device is used, cold air is input into the air cooling cavity through the air cooling pipeline, the cold air is blown to the upper surface of the copper pipe coil through the upper cold air port, the cold air is blown to the center of the copper pipe coil through the middle cold air port, the cold air flows outwards through gaps between the copper pipe bodies, so that heat on the copper pipe is taken away, the heat transfer process on the copper pipe body inside the copper pipe coil is promoted, the uniformity of cooling the copper pipe coil is promoted, the structure is simple, the temperature inside the copper pipe coil can be lower during discharging, and the defect that the copper pipe coil is oxidized due to the fact that the temperature of the copper pipe inside the copper pipe coil is high and the copper pipe is in contact;
2. the resistance of the air at the axis of the copper pipe coil in the process of passing through the copper pipe coil is larger, the resistance of the air blown out from the intercooling cavity is larger, so that the air adjusting sheet rotates towards the direction far away from the intercooling cavity, more air in the air cooling pipeline is blown into the intercooling cavity in more proportion, the pressure of cold air blown out from the lower cold air port is larger, the cold air can easily penetrate through the copper pipe coil from inside to outside, the heat on the copper pipe coil is better taken out, and the heat dissipation effect on the copper pipe body inside the copper pipe coil is achieved;
3. the weight of copper pipe book is great, and the effort between the copper pipe of bottom and the netted bearing structure is great, makes the copper pipe of bottom warp easily, cushions the graphite fiber cushion in copper pipe circle bottom, has increased the holding area to the copper pipe of bottom has been protected.
Drawings
FIG. 1 is a schematic view showing the structure of a hood-type annealing furnace in this embodiment;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic structural view of a hearth seat and a rack in this embodiment;
FIG. 4 is a schematic structural diagram of the air cooling device in the present embodiment;
FIG. 5 is a schematic axial sectional view of the air cooling device of the present embodiment;
fig. 6 is an enlarged view of fig. 2 at B.
Reference numerals: 11. a housing; 12. an inner cover; 13. a furnace bottom pedestal; 14. a heat exchange cavity; 15. a water jet; 16. a spiral cooling tank; 17. a cold water flow passage; 2. an air cooling device; 21. air-cooling the pipeline; 22. an air-cooled cavity; 23. an air inlet; 3. an upper cooling plate; 31. an upper cold air port; 32. an upper cooling cavity; 4. an intercooling column; 41. an intercooling tuyere; 42. an intercooling cavity; 5. a wind power adjustment member; 51. a wind adjusting sheet; 52. a wind adjusting spring; 53. spherical caulking grooves; 54. a spherical fixture block; 55. a support ring; 6. a suspension bracket; 61. fixing the rod; 62. a first height adjustment lever; 63. a second height adjustment lever; 64. locking the bolt; 7. placing a rack; 71. a mesh support structure; 72. a graphite fiber gasket; 81. an exhaust gas conduit; 82. a gas ejector tube; 91. an air extraction pipeline; 92. a vacuum pump is pumped; 93. and (4) rolling the copper pipe.
Detailed Description
A hood-type annealing furnace, as shown in FIGS. 1 and 2, comprises an outer hood 11, an inner hood 12, and a hearth pedestal 13. The stove bottom pedestal 13 is fixed on the ground, and the cross-section of stove bottom pedestal 13 does the vertical cross-section of stove bottom pedestal 13 is "protruding" font, and outer cover 11 is installed at stove bottom pedestal 13 edge, and inner cover 12 is installed in the top surface step department of stove bottom pedestal 13, is equipped with heat transfer cavity 14 between outer cover 11 and the inner cover 12.
As shown in fig. 3 and 6, a circular placing frame 7 is coaxially fixed in the furnace bottom pedestal 13, a net-shaped supporting structure 71 is arranged in the placing frame 7, and a graphite fiber gasket 72 with a circular cross section is placed on the net-shaped supporting structure 71.
As shown in fig. 2 and 3, an air exhaust pipe 81 is fixed to the hearth base 13, the air exhaust pipe 81 is located inside the inner cover 12 and has a plurality of air injection pipes 82 distributed along the length direction of the air exhaust pipe 81, the air injection pipes 82 are used for inserting into one end of the copper pipe on the copper pipe coil 93, and then inject inert gas or nitrogen gas, thereby exhausting the oxygen-containing air in the copper pipe. The outer cover 11 is provided with a water spray nozzle 15 for spraying water into the heat exchange cavity 14.
As shown in fig. 2 and 6, the outer wall of the inner cover 12 is provided with a spiral cooling groove 16, and the bottom wall of the spiral cooling groove 16 is provided with a cold water flow passage 17.
As shown in fig. 2, an air exhaust duct 91 communicating the inner portion of the inner cover 12 is disposed at the top of the inner cover 12, the air exhaust duct 91 upwardly penetrates the outer cover 11 and is connected to a vacuum pump 92, and the vacuum pump 92 is disposed on the bottom surface of one side of the outer cover 11 for exhausting the gas in the inner cover 12 to better evacuate the oxygen-containing air in the inner cover 12.
As shown in fig. 2 and 4, an air cooling device 2 is arranged in the inner cover 12, the air cooling device 2 includes an air cooling pipeline 21, an upper cooling plate 3 and an inter-cooling column 4 integrally arranged with the upper cooling plate 3, the bottom surface of the upper cooling plate 3 is tightly attached to the upper surface of the copper pipe coil 93 and is provided with an upper cold air port 31, the inter-cooling column 4 is inserted into the axis of the copper pipe coil 93, the surface facing the inner wall of the copper pipe coil 93 is provided with an inter-cooling air port 41, the outer diameter of the inter-cooling column 4 is the same as the inner diameter of the copper pipe coil 93, so that the outer wall of the inter-cooling column 4 can be tightly attached to the inner wall of the copper pipe coil 93, and.
The axial section of the air-cooled cavity 22 is in a T shape, wherein the upper cooling cavity 32 is a horizontal T-shaped part, the middle cooling cavity 42 is a vertical T-shaped part, and the upper cooling cavity 32 and the middle cooling cavity 42 are coaxially arranged.
As shown in fig. 2 and 5, a wind force adjusting member 5 is disposed in the air-cooled cavity 22, the wind force adjusting member 5 includes a wind adjusting plate 51 and a wind adjusting spring 52, a suspension bracket 6 is fixed on the inner wall of the upper cooling cavity 32, and a support ring 55 is fixed on the suspension bracket 6. An air inlet 23 is formed in the axis of the upper cooling plate 3, the air inlet 23 penetrates through the outer wall of the upper cooling plate 3 and is communicated with the upper cooling cavity 32, and the air cooling pipeline 21 is arranged on the outer cover 11 and penetrates through the inner cover 12 so as to be connected with the air inlet 23. The radius of the bottom end of the air inlet 23 is smaller than that of the intercooling cavity 42.
The air adjusting sheets 51 are circumferentially distributed along the axis of the upper cooling cavity 32, the bottom ends of the air adjusting sheets 51 are rotatably mounted on the inner bottom wall of the upper cooling cavity 32, the top ends of the air adjusting sheets 51 are placed on the support ring 55, the radius of a ring formed by the bottom ends of the air adjusting sheets 51 is larger than that of the bottom end of the air inlet 23, and the radius of a ring formed by the top ends of the air adjusting sheets 51 is smaller than that of the bottom end of the air inlet 23. The surface of the air adjusting piece 51 facing the intercooling cavity 42 is provided with a spherical embedding groove 53, a spherical fixture block 54 is embedded in the spherical embedding groove 53, the bottom end of the air adjusting spring 52 is installed on the inner bottom wall of the upper cooling cavity 32, the installation position is located in the area enclosed by the bottom end of the air adjusting piece 51, and the top end of the air adjusting spring 52 is installed on the spherical fixture block 54.
The suspension bracket 6 comprises a fixed rod 61 fixed in the intercooling cavity 42 and positioned above the air adjusting sheet 51, a first height adjusting rod 62 arranged on the fixed rod 61, a second height adjusting rod 63 sleeved in the first height adjusting rod 62, and a locking bolt 64, wherein the locking bolt 64 is in threaded connection with the first height adjusting rod 62, the bottom end of the locking bolt 64 can be tightly abutted against the second height adjusting rod 63, and the support ring 55 is fixed at the bottom end of the second height adjusting rod 63.
The use principle is as follows: the copper pipe coil 93 is placed on the graphite fiber gasket 72 on the net-shaped supporting structure 71, then the air injection pipe 82 is inserted into one end of a copper pipe on the copper pipe coil 93, the inner cover 12 is covered on the furnace bottom pedestal 13, the inter-cooling column 4 on the inner cover 12 is inserted into the axle center of the copper pipe coil 93, the bottom surface of the upper cooling plate 3 is attached to the top end of the copper pipe coil 93, then the outer cover 11 is arranged on the outer cover 11 of the inner cover 12, nitrogen is introduced through the exhaust gas pipeline 81, the vacuum pumping pump 92 pumps the inner cover 12 through the air pumping pipeline 91, original oxygen-containing air in the inner cover 12 and oxygen-containing air exhausted from the copper pipe coil 93 are pumped out, and annealing is carried out after air pumping is completed.
After annealing, cold water is introduced into the water spray nozzle 15 and enters the heat exchange cavity 14 to cool the inner cover 12.
Inputting 20-30 ℃ or low-temperature nitrogen into the upper cooling disc 3 through the air cooling pipeline 21, enabling the nitrogen to enter the air cooling cavity 22 from the air inlet 23, enabling the nitrogen to enter the upper cooling cavity 32 and then be blown onto the air adjusting sheet 51, enabling one part of the nitrogen to be blown onto the surface of the air adjusting sheet 51, which is back to the middle cooling cavity 42, then being blown to the top end of the copper pipe coil 93 through the upper cold air inlet 31, and enabling the nitrogen to pass through a gap between the copper pipe bodies and be blown into the inner cover 12; the other part is blown into the intercooling cavity 42 through the area enclosed by the top end of the air adjusting sheet 51, and is blown to the inner wall of the copper pipe coil 93 through the intercooling air port 41, and is blown into the inner cover 12 through the gap of the copper pipe body. The air in the intercooling air port 41 is relatively difficult to penetrate through the inner wall of the copper pipe coil 93, the pressure of nitrogen in the intercooling cavity 42 is larger than that of the upper cooling cavity 32, the pressure of the nitrogen in the intercooling cavity 42 pushes the air adjusting sheet 51 to rotate towards the direction far away from the support ring 55, the air adjusting spring 52 is stretched, the ring formed by the top end of the air adjusting sheet 51 is enlarged, more air is blown to the intercooling cavity 42, the air outlet pressure of the intercooling air port 41 is further increased, and therefore the air can better blow through the copper pipe coil 93 and enter the inner cover 12, and the inside of the copper pipe coil 93 is better cooled in the process. When the wind pressure in the middle cooling cavity 42 is smaller than the wind pressure in the upper cooling cavity 32, the wind adjusting sheet 51 rotates reversely, so that the wind pressure in the upper cooling cavity 32 continues to increase, and the wind can smoothly pass through the copper pipe coil 93 from the upper cooling air port 31. The damper spring 52 is used to increase the rotation resistance of the damper blade 51, thereby providing a damping effect.
The total length of the suspension bracket 6 in the vertical direction can be changed by loosening the locking bolt 64 and mutually sliding the first height adjusting rod 62 and the second height adjusting rod 63, so that the height of the supporting ring 55 is changed, the supporting ring 55 limits the rotation amplitude of the air adjusting sheet 51 to the intercooling cavity 42, the minimum input amount of the air intercooling cavity 42 is controlled, the continuous conveying of cold air from the axis of the copper pipe coil 93 to the space of the inner cover 12 outside the copper pipe coil 93 is ensured, and the interior of the copper pipe coil 93 is cooled better.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (5)
1. The utility model provides a bell-type annealing furnace, includes dustcoat (11), inner cover (12), stove bottom pedestal (13), dustcoat (11), inner cover (12) all cover and are established on stove bottom pedestal (13) and be equipped with heat transfer cavity (14) between dustcoat (11), inner cover (12), are equipped with on dustcoat (11) to water jet (15) of heat transfer cavity (14) water spray, its characterized in that: the inner cover (12) is internally provided with an air cooling device (2), the air cooling device (2) comprises an air cooling pipeline (21), an upper cooling disc (3) and an inter-cooling column (4) which is integrated with the upper cooling disc (3), the bottom surface of the upper cooling plate (3) is tightly attached to the upper surface of the copper pipe coil (93) and is provided with an upper cold air port (31), the intercooling column (4) is inserted into the axis of the copper pipe coil (93) and provided with an intercooling air port (41) towards the surface of the inner wall of the copper pipe coil (93), the upper cold plate (3) and the middle cold column (4) are internally provided with air-cooled cavities (22) which are simultaneously communicated with an upper cold air port (31) and a middle cold air port (41), an air inlet (23) communicated with the air cooling cavity (22) is arranged on the upper cooling disc (3), the air cooling pipeline (21) is arranged on the outer cover (11) and penetrates through the inner cover (12) so as to be connected with the air inlet (23);
the air-cooled air conditioner is characterized in that an air-cooled cavity (22) is internally provided with an air-cooled adjusting piece (5), the air-cooled adjusting piece (5) comprises an air adjusting sheet (51) and an air-cooled spring (52), the axial section of the air-cooled cavity (22) is T-shaped and comprises an upper cooling cavity (32) and an inter-cooling cavity (42) which are perpendicular to each other, the bottom end of an air-cooled pipeline (21) and the inter-cooling column (4) are coaxially arranged, the diameter of the bottom end of the air-cooled pipeline is smaller than that of the inter-cooling cavity (42), the air adjusting sheets (51) are circumferentially distributed along the axis of the inter-cooling column (4), the bottom ends of the air adjusting sheets (51) are rotatably connected with the bottom wall of the upper cooling cavity (32), the distance between the top ends of the two opposite air adjusting sheets (51) is smaller than the diameter of the communication part of the air-cooled pipeline (21) and the upper cooling cavity (32), the air-cooled spring (52) is positioned in the area, the top end is connected with an air adjusting sheet (51);
the surface of the air adjusting sheet (51) facing the axis of the upper cooling cavity (32) is provided with a spherical embedding groove (53), a spherical clamping block (54) is embedded in the spherical embedding groove (53), and the top end of the air adjusting spring (52) is connected with the spherical clamping block (54);
a support ring (55) is arranged in the upper cold cavity (32), and the support ring (55) is positioned in an area surrounded by the air adjusting sheet (51) and can support the air adjusting sheet (51) which rotates towards the direction of the middle cold cavity (42) in an abutting mode;
the support ring (55) is fixedly connected with the inner wall of the intercooling cavity (42) through a suspension bracket (6), the suspension bracket (6) comprises a fixing rod (61) which is fixed in the intercooling cavity (42) and positioned above the air adjusting sheet (51), a first height adjusting rod (62) arranged on the fixing rod (61), a second height adjusting rod (63) arranged in the first height adjusting rod (62) in a penetrating manner and a locking bolt (64), the locking bolt (64) is in threaded connection with the first height adjusting rod (62), the bottom end of the locking bolt (64) can be tightly abutted against the second height adjusting rod (63), and the support ring (55) is fixed at the bottom end of the second height adjusting rod (63);
the furnace bottom pedestal (13) is provided with a placing frame (7), and the placing frame (7) is provided with a net-shaped supporting structure (71) for placing a copper pipe coil (93).
2. A hood-type annealing furnace according to claim 1, characterized in that: the vertical section of the furnace bottom pedestal (13) is in a convex shape; the outer cover (11) is arranged on the edge of the furnace bottom pedestal (13); the inner cover (12) is installed on the top surface step of the furnace bottom pedestal (13), a spiral cooling groove (16) is formed in the outer wall of the inner cover (12), and a cold water flow channel (17) is formed in the bottom wall of the spiral cooling groove (16).
3. A hood-type annealing furnace according to claim 1, characterized in that: a graphite fiber gasket (72) is placed on the net-shaped supporting structure (71).
4. A hood-type annealing furnace according to claim 1, characterized in that: an exhaust gas pipeline (81) is arranged on the furnace bottom pedestal (13), and a plurality of air injection pipes (82) distributed along the length direction of the exhaust gas pipeline (81) are arranged on the exhaust gas pipeline (81).
5. A hood-type annealing furnace according to claim 1, characterized in that: an air exhaust pipeline (91) communicated with the inner portion of the inner cover (12) is arranged on the inner cover (12), and the air exhaust pipeline (91) penetrates out of the outer cover (11) and is connected with an air exhaust pump (92).
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| CN112126873A (en) * | 2020-09-18 | 2020-12-25 | 余兆勇 | Quenching method of copper alloy |
| CN113073187B (en) * | 2021-03-25 | 2023-01-10 | 江西耐乐铜业有限公司 | Cover-type annealing furnace and annealing process applying same |
| CN116042997A (en) * | 2022-12-13 | 2023-05-02 | 江西耐乐铜业有限公司 | Hood-type annealing furnace |
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| CN2206790Y (en) * | 1994-10-13 | 1995-09-06 | 鞍山钢铁公司 | Dabble cooling device for cover type annealing furnace |
| CN202214401U (en) * | 2011-09-02 | 2012-05-09 | 江苏远航精密合金科技股份有限公司 | Cover type bright annealing furnace capable of simultaneously heat-treating nickel straps and nickel wastes |
| CN202595225U (en) * | 2012-05-14 | 2012-12-12 | 洛阳理工学院 | Cooling system of bell-type bright annealing furnace |
| CN106119478A (en) * | 2016-08-30 | 2016-11-16 | 盐城圣奥热处理有限公司 | Bell type annealing furnace |
| CN206173409U (en) * | 2016-11-11 | 2017-05-17 | 浙江东南金属薄板有限公司 | Hood -type annealing furnace |
| CN206902185U (en) * | 2017-05-25 | 2018-01-19 | 北京远东交联电缆有限公司 | A kind of bell-type annealing furnace zone cover cooling structure |
| CN207351226U (en) * | 2017-09-27 | 2018-05-11 | 江苏凯特尔节能技术有限公司 | The comprehensive full stream cooling dome of one kind |
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Denomination of invention: A bell type annealing furnace Effective date of registration: 20220718 Granted publication date: 20200807 Pledgee: Yujiang branch of Jiujiang Bank Co.,Ltd. Pledgor: JIANGXI NAILE COPPER Co.,Ltd. Registration number: Y2022980010607 |
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