CN216869168U - Heating furnace for high-temperature viscosity measuring instrument - Google Patents
Heating furnace for high-temperature viscosity measuring instrument Download PDFInfo
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- CN216869168U CN216869168U CN202123378208.1U CN202123378208U CN216869168U CN 216869168 U CN216869168 U CN 216869168U CN 202123378208 U CN202123378208 U CN 202123378208U CN 216869168 U CN216869168 U CN 216869168U
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Abstract
The utility model belongs to the technical field of heating for measuring the viscosity of continuous casting mold powder, and discloses a heating furnace for a high-temperature viscosity measuring instrument.A water upper cooling device is fixedly arranged in the middle of the upper part of a hearth shell, and a water lower cooling device is fixedly arranged in the middle of the bottom of the hearth shell; the hearth is fixedly arranged inside the hearth shell; the supporting sleeve is sleeved at the lower part of the corundum tube, the graphite crucible is fixedly arranged at the upper part of the supporting sleeve, and the graphite crucible sleeve is fixedly arranged at the upper part of the graphite crucible; the heating device is fixedly arranged at the circumferential position of the corundum tube; the polycrystalline ceramic fiber ring is fixedly arranged at the center of the upper part of the lower water cooling device, and the cordierite plate is fixedly arranged at the bottom of the polycrystalline ceramic fiber ring. The utility model reduces the consumption of cooling water; the heat preservation effect is improved, the energy consumption is reduced, the heating speed of the heating furnace is increased, the load of a heating element is reduced, and the service life of a heating element is prolonged; greatly reduces the weight of the heating furnace and avoids the fire penetration fault caused by cracking of the hearth.
Description
Technical Field
The utility model belongs to the technical field of heating for measuring the viscosity of continuous casting covering slag, and particularly relates to a heating furnace for a high-temperature viscosity measuring instrument.
Background
The main functions of the continuous casting mold flux are as follows: firstly, the contact between air and molten steel is isolated, the secondary oxidation of the molten steel is isolated, the contact between a carbon-rich layer and the molten steel is isolated, the surface recarburization of a casting blank is avoided, the surface quality of the casting blank is improved, the loss of steel is reduced, and the recarburization of the surfaces of low-carbon steel and ultra-low carbon steel can generate brittle blanks. Secondly, molten inclusions (system refractory, deoxidation products and other metal inclusions) are absorbed, the performance of the casting billet is protected from being changed, molten steel is purified, and the purity of the surface of the casting billet is improved. The low viscosity of the mold flux and the proper control of certain components of the mold flux are advantageous for the suction of the mold flux. Thirdly, the operation environment (heat radiation) of the factory is greatly improved, and the continuous casting is conveniently and smoothly carried out. Therefore, the viscosity control of the continuous casting mold flux plays an important role in the whole continuous casting process, and whether the whole continuous casting process can be smoothly carried out or not is determined.
In the prior art, an instrument for measuring the viscosity of continuous casting mold flux is a continuous casting mold flux viscosity measuring instrument. The principle of measuring the viscosity of the continuous casting mold flux is as follows: under the condition that the temperature is higher than the melting temperature of the continuous casting covering slag, a graphite or metal molybdenum probe is soaked in a covering slag melt contained in a graphite crucible, the torque of the probe is measured through a torque sensor, and the viscosity of the slag is determined. In the process of measuring the viscosity of the continuous casting mold flux, the control of the heating temperature is an important factor for determining the accuracy of viscosity measurement, and therefore a heating furnace for heating the continuous casting mold flux needs to have a constant temperature control function. The specific process of measuring the viscosity of the continuous casting mold flux comprises the following steps: the method comprises the steps of firstly heating a continuous casting mold flux sample to a molten state by using a heating furnace, then rotating a measuring rod and a measuring head of a continuous casting mold flux viscosity measuring instrument in molten continuous casting mold flux liquid, and measuring the torque of the measuring head by using a torque sensor to realize the measurement of the viscosity of the continuous casting mold flux. The heating furnace mainly has the technical problems that: 1. the shell of the whole heating furnace is water-cooled, so that the consumption of cooling water is high, and meanwhile, water leakage faults are easy to happen, and the safety of the heating furnace is influenced. 2. The hearth is made of heavy materials, so that the hot melting is large, the heat insulation layer is thin, the temperature rise is slow, and the energy consumption is high; and meanwhile, the heating element has large load and is easy to damage. The inventor develops a heating furnace for a high-temperature viscometer based on the defects in the prior art, and can well solve the technical problems in the prior art.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides a heating furnace for a high-temperature viscosity tester, and the shell of the heating furnace is cooled by air, so that the heat on the surface of the furnace body can be taken away at any time, and the refrigeration pressure of water cooling circulation is reduced; meanwhile, the upper part and the lower part of the hearth are provided with local cooling structures, so that the consumption of cooling water is reduced, and the cooling effect is achieved; the refractory material in the hearth is a novel polycrystalline ceramic refractory material, so that the heat preservation effect is good, the energy consumption is low, the temperature rise speed is high, the load of a heating element is reduced, and the service life of the heating element is prolonged; the heat-insulating layer of the hearth is made of light heat-insulating materials, and multiple layers of heat-insulating materials are arranged in the hearth, so that the fire penetration fault caused by cracking of the hearth is avoided, and meanwhile, the weight of the hearth is greatly reduced.
The technical scheme adopted by the utility model is as follows: a heating furnace for a high-temperature viscosity tester comprises a hearth shell and a wiring aluminum bar, wherein the hearth shell is a hollow cuboid, the wiring aluminum bar is fixedly arranged on the outer side wall of the left side of the hearth shell close to the upper part, and the wiring aluminum bar is symmetrically arranged in the front and back direction; the upper water cooling device is fixedly arranged at the middle position of the upper part of the hearth shell, and the lower water cooling device is fixedly arranged at the middle position of the bottom of the hearth shell; the hearth is fixedly arranged inside the hearth shell and used for heating the continuous casting mold flux sample at a high temperature; the ceramic pipe is arranged at the center of the hearth, the ceramic pipe penetrates through the center of the hearth, the upper part of the ceramic pipe extends to the upper part of the upper water cooling device, and the lower part of the ceramic pipe extends to the bottom of the lower cooling device; the support sleeve is sleeved at the lower part of the ceramic tube, the graphite crucible is fixedly arranged at the upper part of the support sleeve, the graphite crucible is tightly attached to the inside of the ceramic tube, the graphite crucible is a hollow cylinder with the lower part closed and the upper part opened, the graphite crucible sleeve is fixedly arranged at the upper part of the graphite crucible, the graphite crucible sleeve is a hollow cylinder, and the upper part of the graphite crucible sleeve is flush with the upper part of the ceramic tube; the heating device is fixedly arranged at the circumferential position of the ceramic tube, penetrates through the hearth and extends to the upper position of the hearth; the polycrystalline ceramic fiber ring is fixedly arranged at the central position of the upper part of the lower water cooling device, the cordierite plate is fixedly arranged at the bottom position of the polycrystalline ceramic fiber ring, the thermocouple fixing seat is fixedly arranged at the central position of the bottom of the hearth shell, the thermocouple fixing seat penetrates through the centers of the bottoms of the hearth shell, the hearth and the lower water cooling device and is fixedly connected with the bottom of the lower water cooling device, the thermocouple is arranged at the central position of the supporting sleeve, the lower part of the thermocouple is fixedly arranged at the upper part of the thermocouple fixing seat, and the upper part of the thermocouple is close to the bottom of the graphite crucible; the cover plate is sleeved on the ceramic tube and the graphite crucible sleeve on the upper part of the hearth shell, the cover plate is fixed on the surface of the upper part of the hearth shell, the refractory cover brick covers the upper parts of the ceramic tube and the graphite crucible sleeve, the refractory cover brick is in a hollow circular boss shape, and a middle hole of the refractory cover brick is aligned with the upper part and the lower part of the ceramic tube and the graphite crucible sleeve.
The hearth shell comprises a hearth shell body, the hearth shell body is wrapped on the outer side of the hearth, the vent holes are fixedly arranged at the periphery of the upper part of the hearth shell body, and the vent holes are uniformly distributed on the peripheral side surface of the upper part of the hearth shell body; the air inlet holes are fixedly arranged at the left side of the hearth shell body close to the bottom, and are symmetrically arranged in front and back; the strip-shaped ventilation holes are fixedly arranged at the lower parts of the ventilation holes, and are vertically and uniformly arranged around the periphery of the hearth shell body; the fixed upper portion position that is close to in the left side of furnace shell body that sets up of wiring mouth, wiring mouth are front and back symmetry and set up.
A gap is reserved between the hearth shell and the hearth, the space between the hearth shell and the hearth is used for cooling air to cool the hearth, and the cooling air enters from an air inlet hole of the hearth shell body and is discharged from the air vent and the strip-shaped air vent.
The wiring aluminum busbar comprises an insulating bakelite backing plate, the insulating bakelite backing plate is provided with two layers, the two layers of insulating bakelite backing plates are fixedly attached to the outer side surface of the upper portion of the left side of the hearth shell body, the wire inlet aluminum busbar is fixedly arranged on the surface of the insulating bakelite backing plate, one end of the wire inlet aluminum busbar penetrates through the wiring port and extends to the inside of the hearth shell body, and is fixedly connected with the heating device, and the other end of the wire inlet aluminum busbar is fixedly connected with a power line. The inlet wire aluminum bar is connected with the hearth shell through the insulating bakelite cushion block, and the insulating relation between the inlet wire aluminum bar and the hearth shell is ensured.
The upper water cooling device comprises a supporting plate, the supporting plate is fixedly arranged at the front side and the rear side of the middle of the upper part of the hearth shell body, the supporting plate is in a rectangular U shape, a square cooling groove is arranged at the middle position of the supporting plate, a center hole is formed in the center of the upper part of the square cooling groove, the center hole and the square cooling groove are in a closed shape, and the center hole is a through hole penetrating through the supporting plate and the square cooling groove; the fixed left side front position that sets up at square cooling bath of inlet tube, the fixed rear end position that sets up at the inlet tube of outlet pipe, inlet tube and outlet pipe are the front and back symmetry and set up, and inlet tube and outlet pipe and the inside fixed intercommunication of square cooling bath.
The lower water cooling device comprises a cooling tank, a square groove is fixedly arranged in the middle of the cooling tank, the cooling tank is fixedly arranged in the middle of the bottom plate, the bottom plate is fixedly arranged at the upper part of the fixing plate, and the cooling tank and the bottom plate are fixedly connected with the bottom of the hearth shell body; the water inlet is fixedly arranged at the front end of the bottom of the left side of the fixing plate, the water outlet is fixedly arranged at the rear end of the water inlet, the water inlet and the water outlet are symmetrically arranged from front to back, and the water inlet and the water outlet penetrate through the bottom plate and the fixing plate to be fixedly communicated with the cooling tank.
The utility model discloses a high-temperature furnace, including furnace body, six medial surfaces of furnace body, two-layer light-duty heat preservation insulating layer, a polycrystal ceramic fiber section of thick bamboo is provided with to the inside of light-duty heat preservation insulating layer, and a polycrystal ceramic fiber section of thick bamboo is hollow cylinder.
The heating device comprises a silicon-molybdenum rod which is U-shaped, the silicon-molybdenum rod is fixedly arranged in a fixed block, the silicon-molybdenum rod is uniformly arranged around the circumference of the ceramic tube, and a gap is reserved between the silicon-molybdenum rod and the polycrystalline ceramic fiber cylinder; the fixed block passes fixed mounting in the horizontal high alumina ceramic fiberboard in the upper portion of furnace body, and the fixed block uses ceramic pipe as the center, is annular evenly distributed on high alumina ceramic fiberboard.
The lower part of the silicon-molybdenum rod extends to the position, close to the bottom, of the polycrystalline ceramic fiber cylinder, the upper part of the silicon-molybdenum rod penetrates through the light heat-preservation and heat-insulation layer, the high-aluminum ceramic fiber plate and the hearth body to extend into a gap between the hearth body and the hearth shell body, and the upper part of the silicon-molybdenum rod is fixedly connected with one end, extending into the hearth shell body, of the inlet wire aluminum bar.
The polycrystalline ceramic fiber ring is fixedly arranged in the square groove, and the cordierite plate is placed at the bottom of the square groove; the thermocouple fixing seat penetrates through the hearth shell, the hearth, the bottom plate and the center of the bottom of the fixing plate and is fixedly connected with the hearth shell, the hearth and the bottom plate; the upper part of the thermocouple passes through the center of the support sleeve and is close to the bottom of the graphite crucible.
The heating furnace for the high-temperature viscometry is used in the following process: firstly, lifting a refractory cover brick, pouring a continuous casting mold flux sample into a graphite crucible through a center hole of a graphite crucible sleeve, then starting a control switch of a heating device, starting heating of a silicon-molybdenum rod, preheating and heating a polycrystalline ceramic fiber cylinder of a hearth by high-temperature heat generated by the silicon-molybdenum rod, conducting the heat to the graphite crucible through a ceramic tube by the high-temperature heat accumulated in the polycrystalline ceramic fiber cylinder when the temperature of the polycrystalline ceramic fiber cylinder reaches a certain high temperature, and allowing viscosity measurement when the graphite crucible is heated to the required temperature to meet experimental conditions; the upper water cooling device is used for reducing the surface temperature of the hearth shell to protect the test sensor, and the lower water cooling device is used for reducing the ambient temperature around the thermocouple to ensure the accurate measurement of the thermocouple. When the temperature of the upper part of the hearth shell 1 needs to be reduced according to the temperature requirement of the continuous casting mold flux sample, cooling water is conveyed into the upper water cooling device and the lower water cooling device through the water pump, the cooling water enters from a water inlet pipe of the upper water cooling device and exits from a water outlet pipe to form cooling water circulation, and the cooling water enters from a water inlet of the lower water cooling device and exits from a water outlet to form cooling water circulation; thereby realizing the local cooling of the upper part and the lower part of the hearth shell; meanwhile, cooling air can be introduced to the upper part of the hearth shell body by using a cooling fan, the cooling air is conveyed into a cooling space between the hearth shell body and the hearth body, and finally the cooling air is discharged through the vent holes and the strip-shaped vent holes through circulation of the cooling air in the cooling space between the hearth shell body and the hearth body, so that the aim of reducing the temperature of the upper part of the hearth shell is fulfilled; and natural wind can be used for entering the cooling space between the hearth shell body and the hearth body from the air inlet, and natural wind cooling is formed by utilizing the exhaust effect of the vent holes and the strip-shaped vent holes, so that the temperature inside the hearth shell is reduced. In the heating process of the graphite crucible in the hearth, the thermocouple detects the temperature of the graphite crucible and the polycrystalline ceramic fiber cylinder in the hearth in real time.
The ceramic tube is characterized in that the supporting sleeve is sleeved at the lower part in the ceramic tube, the graphite crucible is fixedly arranged at the upper part of the supporting sleeve, the graphite crucible is tightly attached to the inside of the ceramic tube, the graphite crucible is a hollow cylinder with the lower part closed and the upper part opened, the graphite crucible sleeve is fixedly arranged at the upper part of the graphite crucible, the graphite crucible sleeve is a hollow cylinder, and the upper part of the graphite crucible sleeve is flush with the upper part of the ceramic tube. The main purposes of this arrangement are: through the arrangement of the ceramic tube, on one hand, the characteristics of good thermal shock stability and corrosion resistance of the ceramic tube are utilized to protect the graphite crucible, the supporting sleeve and the graphite crucible sleeve, so that the service lives of the graphite crucible, the supporting sleeve and the graphite crucible sleeve are prolonged; on the other hand, the purpose of temperature equalization is achieved by utilizing the heat insulation characteristic of the ceramic tube.
The upper water cooling device comprises a supporting plate, the supporting plate is fixedly arranged at the front side and the rear side of the middle of the upper part of the hearth shell body, the supporting plate is in a rectangular U shape, a square cooling groove is arranged at the middle position of the supporting plate, a center hole is formed in the center of the upper part of the square cooling groove, the center hole and the square cooling groove are in a closed shape, and the center hole is a through hole penetrating through the supporting plate and the square cooling groove; the fixed left side front position that sets up at square cooling bath of inlet tube, the fixed rear end position that sets up at the inlet tube of outlet pipe, inlet tube and outlet pipe are the front and back symmetry and set up, and inlet tube and outlet pipe and the inside fixed intercommunication of square cooling bath. The main purposes of this arrangement are: through the setting of last cooling device, realize the local cooling to furnace shell upper portion to reduce measuring staff and gauge head upper portion torque sensor's temperature, played the purpose of protection torque sensor.
The lower water cooling device comprises a cooling tank, a square groove is fixedly arranged in the middle of the cooling tank, the cooling tank is fixedly arranged in the middle of the bottom plate, the bottom plate is fixedly arranged at the upper part of the fixing plate, and the cooling tank and the bottom plate are fixedly connected with the bottom of the hearth shell body; the water inlet is fixedly arranged at the front end of the bottom of the left side of the fixing plate, the water outlet is fixedly arranged at the rear end of the water inlet, the water inlet and the water outlet are symmetrically arranged from front to back, and the water inlet and the water outlet penetrate through the bottom plate and the fixing plate to be fixedly communicated with the cooling tank. The main purposes of this arrangement are: through the setting of cooling device down, realize the local cooling to furnace shell lower part, play and reduce the ambient temperature around the thermocouple, guarantee the accuracy of thermocouple detected temperature.
Through the common cooling effect of the upper cooling device and the lower cooling device, the cooling effect of the hearth shell is improved while the consumption of cooling water is reduced.
The utility model discloses a high-temperature furnace, including furnace body, six medial surfaces of furnace body, two-layer light-duty heat preservation insulating layer, a polycrystal ceramic fiber section of thick bamboo is provided with to the inside of light-duty heat preservation insulating layer, and a polycrystal ceramic fiber section of thick bamboo is hollow cylinder. The main purposes of arranging the high-aluminum ceramic fiber board are as follows: the high-aluminum ceramic fiber plate has the characteristics of small hot melting and good heat preservation effect, reduces the heating energy consumption of the silicon-molybdenum rod, improves the heating speed of the hearth, reduces the load of a heating element, and prolongs the service life of a heating element. The light heat-insulation layer is a light heat-insulation material, so that on one hand, the heat loss in the hearth is blocked, and the heat-insulation performance in the hearth is improved; on the other hand, the heating speed in the hearth is improved, so that the heating energy consumption of the silicon-molybdenum rod is reduced. The polycrystalline ceramic fiber cylinder is arranged by utilizing the characteristics of good thermal shock stability and corrosion resistance of the polycrystalline ceramic fiber cylinder, so that the service life of the polycrystalline ceramic fiber cylinder is prolonged on one hand, and the heating speed in a hearth is increased on the other hand.
The utility model has the beneficial effects that: the utility model provides a heating furnace for a high-temperature viscosity tester, which greatly reduces the cooling pressure of single water cooling circulation, and reduces the consumption of cooling water by arranging local cooling structures at the upper part and the lower part of a hearth; by using the novel polycrystalline ceramic refractory material, the heat preservation effect is improved, the energy consumption is reduced, the heating speed of the heating furnace is increased, the load of a heating element is reduced, and the service life of a heating element is prolonged; by utilizing multiple layers of light heat-insulating materials, the weight of the heating furnace is greatly reduced, and the fire penetration fault caused by cracking of the hearth is avoided.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a top view of the upper portion of the firebox shell of the present invention;
FIG. 5 is a block diagram of the upper cooling unit of the present invention;
FIG. 6 is a structural view of a lower cooling device of the present invention;
FIG. 7 is an internal structural view of the heating apparatus of the present invention;
the labels in the figure are: 1. hearth shell, 101, hearth shell body, 102, vent holes, 103, air inlet holes, 104, strip-shaped vent holes, 105, wiring ports, 2, wiring aluminum rows, 21, insulating bakelite backing plates, 22, wire inlet aluminum rows, 3, upper water cooling devices, 31, supporting plates, 32, center holes, 33, square cooling tanks, 34, water inlet pipes, 35, water outlet pipes, 4, lower water cooling devices, 41, cooling tanks, 42, square grooves, 43, bottom plates, 44, fixing plates, 45, water inlets, 46, water outlets, 5, hearths, 51, hearth body, 52, high-aluminum ceramic fiber plates, 53, light-weight heat-insulating layers, 54, polycrystalline ceramic fiber cylinders, 6, ceramic pipes, 7, support sleeves, 8, graphite crucibles, 9, graphite crucible sleeves, 10, heating devices, 1001, silicon-molybdenum rods, 1002, fixing blocks, 11, polycrystalline ceramic fiber rings, 12, cordierite, 13, thermocouples, 14. thermocouple fixing base, 15, apron, 16, refractory cover brick.
Detailed Description
The following detailed description of embodiments of the utility model is provided in connection with the accompanying drawings.
As shown in the figure, the utility model provides a heating furnace for a high-temperature viscosity tester, which comprises a hearth shell 1 and a wiring aluminum bar 2, wherein the hearth shell 1 is a hollow square body, the wiring aluminum bar 2 is fixedly arranged on the outer side wall of the left side of the hearth shell 1 close to the upper part, and the wiring aluminum bar 2 is symmetrically arranged in front and back; the upper water cooling device 3 is fixedly arranged at the middle position of the upper part of the hearth shell 1, and the lower water cooling device 4 is fixedly arranged at the middle position of the bottom of the hearth shell 1; the hearth 5 is fixedly arranged inside the hearth shell 1, and the hearth 5 is used for heating the continuous casting mold flux sample at a high temperature; the ceramic pipe 6 is arranged at the center of the hearth 5, the ceramic pipe 6 penetrates through the center of the hearth 5, the upper part of the ceramic pipe 6 extends to the upper part of the upper water cooling device 3, and the lower part of the ceramic pipe 6 extends to the bottom of the lower cooling device 4; the support sleeve 7 is sleeved at the lower part of the ceramic tube 6, the graphite crucible 8 is fixedly arranged at the upper part of the support sleeve 7, the graphite crucible 8 is tightly attached to the inside of the ceramic tube 6, the graphite crucible 8 is a hollow cylinder with the lower part closed and the upper part opened, the graphite crucible sleeve 9 is fixedly arranged at the upper part of the graphite crucible 8, the graphite crucible sleeve 9 is a hollow cylinder, and the upper part of the graphite crucible sleeve 9 is flush with the upper part of the ceramic tube 6; the heating device 10 is fixedly arranged at the circumferential position of the ceramic tube 6, and the heating device 10 penetrates through the hearth 5 and extends to the upper position of the hearth 5; the polycrystalline ceramic fiber ring 11 is fixedly arranged at the central position of the upper part of the lower water cooling device 4, the cordierite plate 12 is fixedly arranged at the bottom position of the polycrystalline ceramic fiber ring 11, the thermocouple fixing seat 14 is fixedly arranged at the central position of the bottom of the hearth shell 1, the thermocouple fixing seat 14 penetrates through the centers of the bottoms of the hearth shell 1, the hearth 5 and the lower water cooling device 4 and is fixedly connected with the bottom of the lower water cooling device 4, the thermocouple 13 is arranged at the central position of the support sleeve 7, the lower part of the thermocouple 13 is fixedly arranged at the upper part of the thermocouple fixing seat 14, and the upper part of the thermocouple 13 is close to the bottom of the graphite crucible 8; the cover plate 15 is sleeved on the ceramic tube 6 and the graphite crucible sleeve 9 on the upper portion of the hearth shell 1, the cover plate 15 is fixed on the surface of the upper portion of the hearth shell 1, the refractory cover brick 16 covers the upper portions of the ceramic tube 6 and the graphite crucible sleeve 9, the refractory cover brick 16 is in a hollow circular boss shape, and a center hole of the refractory cover brick 16 is aligned with the ceramic tube 6 and the graphite crucible sleeve 9 up and down.
The hearth shell 1 comprises a hearth shell body 101, the hearth shell body 101 is wrapped on the outer side of the hearth 5, the vent holes 102 are fixedly arranged at the periphery of the upper part of the hearth shell body 101, and the vent holes 102 are uniformly distributed on the peripheral side surface of the upper part of the hearth shell body 101; the air inlet holes 103 are fixedly arranged at the left side of the hearth shell body 101 close to the bottom, and the air inlet holes 103 are symmetrically arranged in the front and back direction; the strip-shaped ventilation holes 104 are fixedly arranged at the lower parts of the ventilation holes 102, and the strip-shaped ventilation holes 104 are vertically and uniformly arranged around the periphery of the hearth shell body 101; the wiring port 105 is fixedly arranged on the left side of the hearth shell body 101 close to the upper part, and the wiring port 105 is symmetrically arranged front and back.
A gap is reserved between the hearth shell 1 and the hearth 5, the space between the hearth shell 1 and the hearth 5 is used for compressed gas to cool the hearth 5, and the compressed gas enters from the air inlet 103 of the hearth shell body 101 and is discharged from the air vent 102 and the strip-shaped air vent 104.
Wiring aluminium is arranged 2 and is included insulating bakelite backing plate 21, and insulating bakelite backing plate 21 is provided with two-layerly, and two-layer insulating bakelite backing plate 21 is fixed with the fixed subsides of left side upper portion lateral surface of furnace shell body 101, and the fixed surface that sets up at insulating bakelite backing plate 21 is arranged to inlet wire aluminium 22, and the one end of inlet wire aluminium is arranged 22 and is passed wiring mouth 105 and extend to inside furnace shell body 101 to with heating device 10 fixed connection, the inlet wire aluminium is arranged 22 the other end and power cord fixed connection.
The upper water cooling device 3 comprises a supporting plate 31, the supporting plate 31 is fixedly arranged at the front side and the rear side of the middle of the upper part of the hearth shell body 101, the supporting plate 31 is in a rectangular U shape, a square cooling groove 33 is arranged at the middle position of the supporting plate 31, a center hole 32 is arranged at the center of the upper part of the square cooling groove 33, the center hole 32 and the square cooling groove 33 are in a closed shape, and the center hole 32 is a through hole penetrating through the supporting plate 31 and the square cooling groove 33; the water inlet pipe 34 is fixedly arranged at the front position of the left side of the square cooling groove 33, the water outlet pipe 35 is fixedly arranged at the rear position of the water inlet pipe 34, the water inlet pipe 34 and the water outlet pipe 35 are symmetrically arranged front and back, and the water inlet pipe 34 and the water outlet pipe 35 are fixedly communicated with the inside of the square cooling groove 33.
The lower water cooling device 4 comprises a cooling tank 41, a square groove 42 is fixedly arranged in the middle of the cooling tank 41, the cooling tank 41 is fixedly arranged in the middle of a bottom plate 43, the bottom plate 43 is fixedly arranged at the upper part of a fixing plate 44, and the cooling tank 41 and the bottom plate 43 are fixedly connected with the bottom of the hearth shell body 101; the water inlet 45 is fixedly arranged at the front end of the left bottom of the fixing plate 44, the water outlet 46 is fixedly arranged at the rear end of the water inlet 45, the water inlet 45 and the water outlet 46 are symmetrically arranged in the front-back direction, and the water inlet 45 and the water outlet 46 penetrate through the bottom plate 43 and the fixing plate 44 to be fixedly communicated with the cooling tank 41.
The hearth 5 comprises a hearth body 51, the hearth body 51 is a hollow square body, six inner side faces of the hearth body 51 are fixedly provided with high-aluminum ceramic fiber boards 52, six inner side faces of the high-aluminum ceramic fiber boards 52 are fixedly provided with two layers of light heat-insulating layers 53, a polycrystalline ceramic fiber cylinder 54 is arranged inside each light heat-insulating layer 53, and the polycrystalline ceramic fiber cylinder 54 is in a hollow cylindrical shape.
The heating device 10 comprises a silicon-molybdenum rod 1001, the silicon-molybdenum rod 1001 is U-shaped, the silicon-molybdenum rod 1001 is fixedly arranged in a fixing block 1002, the silicon-molybdenum rod 1001 is uniformly arranged around the circumference of the ceramic tube 6, and a gap is reserved between the silicon-molybdenum rod 1001 and the polycrystalline ceramic fiber cylinder 54; the fixing blocks 1002 penetrate through the transverse high-alumina ceramic fiber plate 52 on the upper part of the hearth body 51 to be fixedly installed, and the fixing blocks 1002 are uniformly distributed on the high-alumina ceramic fiber plate 52 in an annular shape by taking the ceramic tube 6 as a center.
The lower part of the silicon-molybdenum rod 1001 extends to the position, close to the bottom, of the polycrystalline ceramic fiber cylinder 54, the upper part of the silicon-molybdenum rod 1001 penetrates through the light heat-insulation layer 53, the high-aluminum ceramic fiber plate 52 and the hearth body 51 to extend into a gap between the hearth body 51 and the hearth casing body 101, and the upper part of the silicon-molybdenum rod 1001 is fixedly connected with one end, extending to the inside of the hearth casing body 101, of the wire-inlet aluminum bar 22.
The polycrystalline ceramic fiber ring 11 is fixedly arranged in the square groove 42, and the cordierite plate 12 is placed at the bottom of the square groove 42; the thermocouple fixing seat 14 penetrates through the center of the bottom of the hearth shell 1, the hearth 5, the bottom plate 43 and the fixing plate 44 and is fixedly connected with the bottom center; the upper part of the thermocouple 13 passes through the center of the support sleeve 7 and is close to the bottom of the graphite crucible 8.
The heating furnace for the high-temperature viscometry is used in the following process: firstly, lifting a refractory cover brick 16, pouring a continuous casting mold flux sample into a graphite crucible 8 through a central hole of a graphite crucible sleeve 9, then starting a control switch of a heating device 10, starting heating by a silicon-molybdenum rod 1002, preheating a polycrystalline ceramic fiber cylinder 54 of a hearth 5 by high-temperature heat generated by the silicon-molybdenum rod 1002, heating, conducting the heat to the graphite crucible 8 by high-temperature heat accumulated in the polycrystalline ceramic fiber cylinder 54 through a ceramic tube 6 when the temperature of the polycrystalline ceramic fiber cylinder 54 reaches a certain high temperature, and allowing viscosity measurement when the graphite crucible 8 is heated to the required temperature to meet experimental conditions; the upper water cooling device 3 is used for reducing the surface temperature of the hearth shell 1 to protect the test sensor, and the lower water cooling device is used for reducing the ambient temperature around the thermocouple 13 to ensure the accurate measurement of the thermocouple 13. When the temperature of the upper part of the hearth shell 1 needs to be reduced according to the temperature requirement of the continuous casting mold flux sample, cooling water is conveyed into the upper water cooling device 3 and the lower water cooling device 4 through a water pump, the cooling water enters from a water inlet pipe 34 of the upper water cooling device 3 and exits from a water outlet pipe 35 to form cooling water circulation, and the cooling water enters from a water inlet 45 of the lower water cooling device 4 and exits from a water outlet 46 to form cooling water circulation; thereby realizing the local cooling of the upper part and the lower part of the hearth shell 1; meanwhile, a compressed air pipe can be introduced into the upper part of the hearth shell body 101, cooling air is conveyed into a cooling space between the hearth shell body 101 and the hearth body 51, and finally the cooling air is discharged through the vent holes 102 and the strip-shaped vent holes 104 through circulation of the cooling air in the cooling space between the hearth shell body 101 and the hearth body 51, so that the purpose of reducing the temperature of the upper part of the hearth shell 1 is achieved; the natural wind can also be used for entering the cooling space between the hearth shell body 101 and the hearth body 51 from the wind inlet 103, and the natural wind cooling is formed by the exhaust action of the vent holes 102 and the strip-shaped vent holes 104, so that the temperature inside the hearth shell is reduced. During the heating process of the graphite crucible 8 in the furnace 5, the thermocouple 13 detects the temperature of the graphite crucible 8 and the polycrystalline ceramic fiber cylinder 54 in the furnace 5 in real time.
Various modifications to the above-described embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A heating furnace for a high-temperature viscosity tester comprises a hearth shell and a wiring aluminum bar, wherein the hearth shell is a hollow square body, the wiring aluminum bar is fixedly arranged on the outer side wall of the left side of the hearth shell close to the upper part, and the wiring aluminum bar is symmetrically arranged in the front and back direction; the method is characterized in that: the upper water cooling device is fixedly arranged in the middle of the upper part of the hearth shell, and the lower water cooling device is fixedly arranged in the middle of the bottom of the hearth shell; the hearth is fixedly arranged inside the hearth shell and used for heating the continuous casting mold flux sample at a high temperature; the ceramic pipe is arranged at the center of the hearth, the ceramic pipe penetrates through the center of the hearth, the upper part of the ceramic pipe extends to the upper part of the upper water cooling device, and the lower part of the ceramic pipe extends to the bottom of the lower cooling device; the support sleeve is sleeved at the lower part of the ceramic tube, the graphite crucible is fixedly arranged at the upper part of the support sleeve, the graphite crucible is tightly attached to the inside of the ceramic tube, the graphite crucible is a hollow cylinder with the lower part closed and the upper part opened, the graphite crucible sleeve is fixedly arranged at the upper part of the graphite crucible, the graphite crucible sleeve is a hollow cylinder, and the upper part of the graphite crucible sleeve is flush with the upper part of the ceramic tube; the heating device is fixedly arranged at the circumferential position of the ceramic tube, penetrates through the hearth and extends to the upper position of the hearth; the polycrystalline ceramic fiber ring is fixedly arranged at the central position of the upper part of the lower water cooling device, the cordierite plate is fixedly arranged at the bottom position of the polycrystalline ceramic fiber ring, the thermocouple fixing seat is fixedly arranged at the central position of the bottom of the hearth shell, the thermocouple fixing seat penetrates through the centers of the bottoms of the hearth shell, the hearth and the lower water cooling device and is fixedly connected with the bottom of the lower water cooling device, the thermocouple is arranged at the central position of the supporting sleeve, the lower part of the thermocouple is fixedly arranged at the upper part of the thermocouple fixing seat, and the upper part of the thermocouple is close to the bottom of the graphite crucible; the cover plate is sleeved on the ceramic tube and the graphite crucible sleeve on the upper part of the hearth shell, the cover plate is fixed on the surface of the upper part of the hearth shell, the refractory cover brick covers the upper parts of the ceramic tube and the graphite crucible sleeve, the refractory cover brick is in a hollow circular boss shape, and a middle hole of the refractory cover brick is aligned with the upper part and the lower part of the ceramic tube and the graphite crucible sleeve.
2. The heating furnace for a high temperature viscometer according to claim 1, wherein: the hearth shell comprises a hearth shell body, the hearth shell body is wrapped on the outer side of the hearth, the vent holes are fixedly arranged at the periphery of the upper part of the hearth shell body, and the vent holes are uniformly distributed on the peripheral side surface of the upper part of the hearth shell body; the air inlet holes are fixedly arranged at the left side of the hearth shell body close to the bottom, and are symmetrically arranged in front and back; the strip-shaped ventilation holes are fixedly arranged at the lower parts of the ventilation holes, and are vertically and uniformly arranged around the periphery of the hearth shell body; the fixed upper portion position that is close to in the left side of furnace shell body that sets up of wiring mouth, wiring mouth are front and back symmetry and set up.
3. The heating furnace for a high temperature viscometer according to claim 1, wherein: the wiring aluminum busbar comprises an insulating bakelite backing plate, the insulating bakelite backing plate is provided with two layers, the two layers of insulating bakelite backing plates are fixedly attached to the outer side surface of the upper portion of the left side of the hearth shell body, the wire inlet aluminum busbar is fixedly arranged on the surface of the insulating bakelite backing plate, one end of the wire inlet aluminum busbar penetrates through the wiring port and extends to the inside of the hearth shell body, and is fixedly connected with the heating device, and the other end of the wire inlet aluminum busbar is fixedly connected with a power line.
4. The heating furnace for a high temperature viscometer according to claim 1, wherein: the upper water cooling device comprises a supporting plate, the supporting plate is fixedly arranged at the front side and the rear side of the middle of the upper part of the hearth shell body, the supporting plate is in a rectangular U shape, a square cooling groove is arranged at the middle position of the supporting plate, a center hole is formed in the center of the upper part of the square cooling groove, the center hole and the square cooling groove are in a closed shape, and the center hole is a through hole penetrating through the supporting plate and the square cooling groove; the fixed left side front position that sets up at square cooling bath of inlet tube, the fixed rear end position that sets up at the inlet tube of outlet pipe, inlet tube and outlet pipe are the front and back symmetry and set up, and inlet tube and outlet pipe and the inside fixed intercommunication of square cooling bath.
5. The heating furnace for a high temperature viscometer according to claim 1, wherein: the lower water cooling device comprises a cooling tank, a square groove is fixedly arranged in the middle of the cooling tank, the cooling tank is fixedly arranged in the middle of the bottom plate, the bottom plate is fixedly arranged at the upper part of the fixing plate, and the cooling tank and the bottom plate are fixedly connected with the bottom of the hearth shell body; the water inlet is fixedly arranged at the front end of the bottom of the left side of the fixing plate, the water outlet is fixedly arranged at the rear end of the water inlet, the water inlet and the water outlet are symmetrically arranged from front to back, and the water inlet and the water outlet penetrate through the bottom plate and the fixing plate to be fixedly communicated with the cooling tank.
6. The heating furnace for a high temperature viscometer according to claim 1, wherein: the utility model discloses a high-temperature furnace, including furnace body, six medial surfaces of furnace body, two-layer light-duty heat preservation insulating layer, a polycrystal ceramic fiber section of thick bamboo is provided with to the inside of light-duty heat preservation insulating layer, and a polycrystal ceramic fiber section of thick bamboo is hollow cylinder.
7. The heating furnace for a high temperature viscometer according to claim 6, wherein: the heating device comprises a silicon-molybdenum rod which is U-shaped, the silicon-molybdenum rod is fixedly arranged in a fixed block, the silicon-molybdenum rod is uniformly arranged around the circumference of the ceramic tube, and a gap is reserved between the silicon-molybdenum rod and the polycrystalline ceramic fiber cylinder; the fixed block passes fixed mounting in the horizontal high alumina ceramic fiberboard in upper portion of furnace body, and the fixed block uses ceramic pipe as the center, is annular evenly distributed on high alumina ceramic fiberboard.
8. The heating furnace for a high temperature viscometers according to claim 7, wherein: the lower part of the silicon-molybdenum rod extends to the position, close to the bottom, of the polycrystalline ceramic fiber cylinder, the upper part of the silicon-molybdenum rod penetrates through the light heat-preservation and heat-insulation layer, the high-aluminum ceramic fiber plate and the hearth body to extend into a gap between the hearth body and the hearth shell body, and the upper part of the silicon-molybdenum rod is fixedly connected with one end, extending into the hearth shell body, of the inlet wire aluminum bar.
9. The heating furnace for a high temperature viscometer according to claim 5, wherein: the polycrystalline ceramic fiber ring is fixedly arranged in the square groove, and the cordierite plate is placed at the bottom of the square groove; the thermocouple fixing seat penetrates through the hearth shell, the hearth, the bottom plate and the center of the bottom of the fixing plate and is fixedly connected with the hearth shell, the hearth and the bottom plate; the upper part of the thermocouple passes through the center of the support sleeve and is close to the bottom of the graphite crucible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123378208.1U CN216869168U (en) | 2021-12-30 | 2021-12-30 | Heating furnace for high-temperature viscosity measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123378208.1U CN216869168U (en) | 2021-12-30 | 2021-12-30 | Heating furnace for high-temperature viscosity measuring instrument |
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| Publication Number | Publication Date |
|---|---|
| CN216869168U true CN216869168U (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123378208.1U Active CN216869168U (en) | 2021-12-30 | 2021-12-30 | Heating furnace for high-temperature viscosity measuring instrument |
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| Country | Link |
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| CN (1) | CN216869168U (en) |
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2021
- 2021-12-30 CN CN202123378208.1U patent/CN216869168U/en active Active
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