CN114406217A - Internal quick-cooling and internal-cooling type roller based on thermoelectric effect and temperature control method thereof - Google Patents

Internal quick-cooling and internal-cooling type roller based on thermoelectric effect and temperature control method thereof Download PDF

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CN114406217A
CN114406217A CN202210023644.7A CN202210023644A CN114406217A CN 114406217 A CN114406217 A CN 114406217A CN 202210023644 A CN202210023644 A CN 202210023644A CN 114406217 A CN114406217 A CN 114406217A
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temperature control
roller
cooling
tec
electronic temperature
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CN114406217B (en
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许志强
海杨
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Yanshan University
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Yanshan University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/068—Accessories therefor for cooling the cast product during its passage through the mould surfaces
    • B22D11/0682—Accessories therefor for cooling the cast product during its passage through the mould surfaces by cooling the casting wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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Abstract

The invention discloses an internal quick-cooling inner-cooling type roller based on a thermoelectric effect and a temperature control method thereof, relating to the field of strip casting and rolling manufacturing.A TEC electronic temperature control sheet is arranged on the surface of a roller core, and m sheets are arranged along the axial direction of the roller core; the n rows are arranged along the circumferential direction of the roller core. Each row of TEC electronic temperature control sheets are connected in series through a wire guide groove to form an integral control unit, and a cooling water channel is arranged below each row of TEC electronic temperature control sheets to take away heat extracted by the TEC electronic temperature control sheets from the roller sleeve. Through calculation, after the TEC electronic temperature control sheet is arranged, the temperature-equalizing copper sleeve is arranged on the roller core in an interference heat mode; and then the roller sleeve is arranged on the temperature-equalizing copper sleeve in a hot-fitting manner. When the device works, real-time signal feedback and control are carried out through a signal acquisition system, a temperature sensor, a computer control system and the like. The invention strengthens the cooling effect, increases the cooling speed, has uniform cooling effect, improves the production efficiency, further enhances the strength of the roller core, improves the replacement speed of the roller sleeve and increases the production line efficiency.

Description

Internal quick-cooling and internal-cooling type roller based on thermoelectric effect and temperature control method thereof
Technical Field
The invention relates to the field of strip casting and rolling manufacturing, in particular to an internal quick-cooling inner-cooling type roller based on a thermoelectric effect and a temperature control method thereof.
Background
The casting and rolling process is a short-flow and high-concentration plate strip rapid production process, has two functions of casting and solidifying and plate blank rolling, shortens the length of a production line, and is convenient for rapid production of related metal plate strips. Different from the roller of the hot rolling mill, the casting roller is contacted with the high-temperature metal solution in the middle part of the rolling process, and the solidified shell is further formed through the quick heat exchange of the casting roller and the high-temperature metal solution. And (5) rolling the solidified shell at a kiss point to form a plate blank for next rolling. In the process, the casting roller bears a large number of heat interaction tasks, including various heat interactions such as high-temperature liquid metal solution solidification heat release, solidification shell rolling latent heat, casting and rolling slab rolling heat and the like. Thus, there is a periodic temperature rise of the casting rolls during rolling. The casting roller is generally a combined roller under the influence of the upper limit of the temperature endured by the roller, and a closed-loop water path is arranged in the roller to convey cooling water for the casting roller in the rolling process, so that the roller is cooled. However, due to the limited heat transfer capacity and temperature difference control limitation of the roll, the temperature difference of nearly 400 ℃ still exists between the inner wall of the roll sleeve and the outer wall of the roll sleeve in the conventional casting and rolling production, so that the heat exchange capacity of the casting and rolling roll is greatly influenced, the service life of the casting and rolling roll is shortened, and the continuous casting and rolling production is hindered.
Aiming at the problem, the casting and rolling roller structure widely used at present is divided into a roller core and a roller sleeve, the structural shape of the roller core is extremely complex, and a plurality of grooves, small holes and deep holes are formed in the inner part and the surface of the roller core and used for taking away heat generated in the crystallization process of liquid metal through cooling water. However, these grooves, small holes and deep holes simultaneously affect the structural strength of the roll core, which reduces the strength and life of the entire casting roll. On the other hand, the roll sleeve and the roll core of the casting roll are made of two different materials, the two materials are matched to form a composite body, a discontinuous joint surface is inevitably formed, and in order to ensure the strict sealing performance of the internal cooling water path, welding treatment is often performed at the joint part, so that the assembly complexity of the internal cooling roll is increased. In addition, in order to ensure uniformity of the cooling effect of the cooling water, the flow directions of the adjacent cooling water paths are often opposite, and although the uniformity of the cooling effect can be improved, the non-uniformity still exists.
Disclosure of Invention
In view of the above problems, the present invention provides an internal rapid cooling inner-cooling roller based on thermoelectric effect and a temperature control method thereof, so as to achieve rapid heat exchange during the operation of the inner-cooling roller.
The technical scheme adopted by the invention is as follows:
in one aspect, the invention provides an internal quick-cooling inner-cooling type roller based on a thermoelectric effect, wherein the inner-cooling type roller comprises a roller core, a roller sleeve and a temperature-equalizing copper sleeve;
the surface of the roller core roller body is uniformly provided with a plurality of TEC electronic temperature control sheet grooves for arranging TEC electronic temperature control sheets based on thermoelectric effect along the axial direction and the circumferential direction; the size of the TEC electronic temperature control sheet groove is consistent with that of the TEC electronic temperature control sheet;
each row of TEC electronic temperature control sheet grooves in the axial direction of the surface of the roller core roller body are provided with wire grooves along the same direction, and wires are routed along the wire grooves; a row of TEC electronic temperature control plates are connected in series by the conducting wire to form a regulation and control unit;
a cooling water channel is arranged on the side surface of the roller core roller body routing corresponding to each regulating and controlling unit, and cooling water is introduced into the cooling water channel and used for taking away heat extracted by the TEC electronic temperature control sheet from the roller sleeve;
and temperature sensors are pasted at two ends of each TEC electronic temperature control sheet and connected to a signal acquisition system, so that the temperature of the cooling side of the roller core and the temperature of the cooling water side are monitored in real time during working, and the output power of the TEC electronic temperature control sheets is convenient to adjust.
Further, according to the working conditions of the inner-cooling type roller, the required distribution spacing between the TEC electronic temperature control sheets under each working condition is calculated, the number of the TEC electronic temperature control sheets is determined according to the distribution spacing, and the number of the TEC electronic temperature control sheets is distributed.
Furthermore, each TEC electronic temperature control plate groove is provided with a TEC electronic temperature control plate.
Furthermore, every other at least one TEC electronic temperature control plate groove is provided with a TEC electronic temperature control plate.
Furthermore, the material of the temperature-equalizing copper sleeve is beryllium copper.
Furthermore, the roller core and the temperature-equalizing copper sleeve, and the temperature-equalizing copper sleeve and the roller sleeve are assembled in an interference hot-charging mode.
In still another aspect, the present invention further provides a method for controlling the temperature of the internal rapid cooling and internal cooling type roll based on the thermoelectric effect, the method comprising:
determining the quantity and the mode of the distributed pieces according to the required working condition, and arranging the TEC electronic temperature control pieces according to the quantity and the mode of the distributed pieces;
after the piece distribution is finished, connecting the signal acquisition system and the direct-current power supply, and carrying out a power-on test and a signal acquisition test to ensure that each system works normally;
the temperature-equalizing copper sleeve and the roller sleeve are subjected to interference hot-fitting on the roller core by utilizing the principle of expansion with heat and contraction with cold;
testing whether the cooling circulation system works normally; testing whether the signal acquisition system works normally and carrying out balance zero clearing; carrying out short circuit test on the direct current power supply; carrying out short-time power-on test on the TEC electronic temperature control sheet, and detecting whether each sensor is abnormal or not;
and during formal work, the TEC electronic temperature control plate is started according to a preset power level, the temperature sensor transmits a temperature change signal to the signal acquisition system, and the computer adjusts the power level of the TEC electronic temperature control plate according to a control strategy.
Further, according to the required working condition, the number of the cloth pieces and the cloth piece mode are determined, and the method comprises the following steps:
obtaining the refrigerating capacity Qc of the TEC electronic temperature control chip by the basic principle of thermoelectric effect:
Figure BDA0003463601820000031
wherein Qc is the refrigerating capacity of a single group of thermopiles (the thermopile is a semiconductor pair and is also the most basic thermoelectric unit, 127 thermopiles are arranged in each TEC electronic temperature control chip), K is the total thermal conductance of the thermopiles, and T is the total thermal conductance of the thermopilescIs the cold end temperature, R is the total resistance of the thermopile, Delta T is the temperature difference between the cold end and the hot end of the thermopile, and I is the current magnitude; alpha is alphaabIs the seebeck coefficient;
calculating to obtain the power P of the single TEC electronic temperature control wafer (127 Qc);
determining the total heat Q according to the heat exchange coefficient required by the casting and rolling cooling under the required working condition;
determining the number of the distributed sheets according to the constraint condition that the number of the distributed sheets is greater than the total heat Q by the power P of the single sheets;
and determining the cloth mode according to the number of the cloth.
The invention has the following beneficial effects:
1) the cooling element adopted by the invention is a thermoelectric effect-based TEC electronic temperature control chip, is an electronic element, has simple structure, sensitive response, flexible and controllable adjustment mode and controllable power, and is an excellent cooling source so far. In the invention, the refrigeration principle of the TEC electronic temperature control sheet is mainly utilized to replace the traditional water cooling, and a series of inner-cooling type rollers including a casting roller and the like are rapidly, adjustably and controllably cooled. The traditional water cooling effect can only be controlled by changing the flow rate of cooling water, so that the impact stress of the water flow can influence the roller core structure and reduce the service life of the roller core after repeated operation. The inner-cooling roller of the invention has no problems, and the adjustment of the cooling capacity can be realized only by regulating and controlling the current.
2) The cooling core element adopted by the invention is the TEC electronic temperature control sheet, and the sealing property of the matching between the roller core and the roller sleeve is not required. In the traditional casting roller, high-speed cooling water flow can put higher requirements on the sealing performance of the casting roller, and the complexity of the structure of the casting roller is increased.
3) The cooling core element adopted by the invention is the TEC electronic temperature control sheet, so that the refrigeration efficiency is higher, the refrigeration speed is higher, the cooling effect is stronger, and the quick cooling effect can be realized.
4) The adopted cooling core element is the TEC electronic temperature control sheet, a complex cooling water path does not need to be arranged on the roller core, the structural strength of the roller core is further improved, and the service life of the whole inner-cooling roller is prolonged.
5) The adopted cooling core element is the TEC electronic temperature control sheet, the refrigerating effect of each refrigerating unit is uniform, and the integral uniform cooling effect of the roller core can be realized under the action of the temperature-equalizing copper sleeve. Whereas in conventional casting rolls the cooling water flows from one end to the other, the cooling effect tends to have a gradient decreasing from the inlet to the outlet.
6) According to the invention, the TEC electronic temperature control sheets are embedded in the electronic temperature control sheet grooves, so that the positioning is more accurate and stable, no displacement in any form can occur in the working process, and the control mode takes a row of TEC sheets as a control unit. Compared with the traditional water cooling, the controllability is better.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view showing the overall structure of an internal rapid cooling and internal cooling type roll based on the thermoelectric effect in the embodiment of the present invention;
FIG. 2 is an isometric view of a roll core of an internally cooled roll in an embodiment of the invention;
FIG. 3 is an enlarged partial schematic view of an embodiment of the invention illustrating the inner cooled rolls;
FIG. 4 is a front view of a core of an internally cooled roll in an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a front view of a roll core of an internally cooled roll in an embodiment of the present invention;
FIG. 6 is an isometric view of an assembly of internally cooled rolls according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view of a front view of the assembly of the inner cooled rolls in an embodiment of the present invention;
in the figure: 1-roller core, 2-TEC electronic temperature control sheet groove, 3-water inlet, 4-water outlet, 5-wire groove, 6-cooling water path, 7-roller sleeve and 8-temperature-equalizing copper sleeve.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a schematic diagram of a structure of an internally-cooled roll according to an embodiment of the present invention is shown, where the embodiment takes a casting roll as an example, and other internally-cooled rolls are applicable. The inner-cooling type roller comprises a roller sleeve, a roller core, a temperature-equalizing copper sleeve, a TEC electronic temperature control sheet groove, a temperature sensor, a signal acquisition system, a cooling circulation system, a direct-current power supply and a lead.
A TEC (Thermo Electric Cooler) electronic temperature control chip is manufactured by using the peltier effect of a semiconductor material. The peltier effect is a phenomenon in which when a direct current passes through a couple composed of two semiconductor materials, one end absorbs heat and the other end releases heat. The heavily doped N-type and P-type bismuth telluride are mainly used as semiconductor materials of TEC, and the bismuth telluride elements are electrically connected in series and generate heat in parallel. The TEC comprises a number of P-type and N-type pairs (sets) connected together by electrodes and sandwiched between two ceramic electrodes; when current flows through the TEC, one end of a semiconductor pair made of different materials absorbs energy, and the other end releases energy, so that a hot side and a cold side are generated on the TEC, and the heating and cooling principle of the TEC is realized.
As shown in fig. 2 and fig. 3, which illustrate schematic axial side structures in an embodiment of the present invention, a roll core 1 is a special structure, and unlike a traditional casting roll core, a cooling water path for directly cooling a roll sleeve is not built in the structure, and instead, a TEC electronic temperature control plate is arranged on the surface of the roll core 1. Firstly, calculating a required cloth piece spacing between TEC electronic temperature control pieces under each working condition according to different working conditions, and designing m TEC electronic temperature control piece grooves 2 along the axial direction of a roller core 1 by taking the minimum cloth piece spacing as a reference, wherein the sizes of the TEC electronic temperature control piece grooves 2 are consistent with the sizes of the TEC electronic temperature control pieces; meanwhile, on the basis of a row of TEC electronic temperature control sheet grooves 2 in the axial direction of the roller core, n rows of the TEC electronic temperature control sheet grooves 2 are uniformly arranged along the circumferential direction of the roller core, wherein the distance between every two rows is based on the calculated minimum sheet arrangement distance. Each row of TEC electronic temperature control chip grooves 2 is provided with a wire guide groove 5 along the same direction, thereby realizing the series connection of a row of TEC electronic temperature control chips to form a regulation and control unit. The wire guides 5 extend to the edge of the roll body of the core 1, continue radially along the side of the roll body of the core 1 to the neck, and then axially along the neck to the edge of the neck. The TEC electronic temperature control sheet is arranged in the TEC electronic temperature control sheet groove 2, and the conducting wire is arranged along the conducting wire groove 5.
Temperature sensors are pasted at two ends of the TEC electronic temperature control sheet and connected to a signal acquisition system, so that the temperature of the cooling side of the roller core and the temperature of the cooling water road side are monitored in real time during working, and the output power of the TEC electronic temperature control sheet is convenient to adjust.
As shown in fig. 4 and 5, according to different working conditions, a required distribution distance between the TEC electronic temperature control plates under each working condition is calculated, m TEC electronic temperature control plate grooves are designed along the axial direction of the roller core with the minimum distribution distance as a reference, and the size of the TEC electronic temperature control plate grooves is consistent with that of the TEC electronic temperature control plates; meanwhile, on the basis of a row of TEC electronic temperature control sheet grooves in the axial direction of the roller core, n rows of the TEC electronic temperature control sheet grooves are uniformly distributed along the circumferential direction of the roller core, wherein the distance between every two rows is based on the calculated minimum sheet distribution distance.
The side of walking the line at 2 roller bodies of roller core corresponds the position department of every row of TEC electron temperature control piece groove 2, it is provided with cooling water route 6 to correspond under every row of TEC electron temperature control piece (this cooling water route sets up inside the roller core, be used for going out the heat conduction that absorbs on the TEC electron temperature control piece, be different from the cooling water route of direct cooling roller shell under the traditional water-cooling mode, also be different from complicated cooling water route structure under the traditional water-cooling mode, also need not design slot, aperture and deep hole on roller core inside and surface, and all be provided with a water inlet 3 in roller neck edge, let in the cooling water through 3 case cooling water route 6 in the nearly mouth of a river, take away the heat that TEC electron temperature control piece took out from roller shell 7, evenly arrange n group along circumference. The cooling water path 6 extends along the axial direction of the roller core 1, has the same length as each row of TEC electronic temperature control sheet grooves 2, and then extends along the radial direction of the roller core 1. The central part of the interior of the roller core 1 is provided with a water outlet 4 along the axial direction of the roller core 1, the n groups of cooling water paths are all converged to the water outlet 4 at the center of the roller core and then recycled to an external water storage tank, and a complete cooling circulation closed loop is formed. The water storage tank is independently arranged on the outer side of the working area, and a water pump is arranged in the water storage tank and used for realizing circulation of cooling water.
Before assembly, the interval of the TEC electronic temperature control plates required by the working condition is calculated, so that the quantity of the TEC electronic temperature control plates distributed is determined, such as full arrangement or separated groove arrangement. The specific sheet distribution mode is determined according to specific requirements, and the sheet can be distributed completely, one groove can be separated, two grooves can be separated, and the like. In this embodiment, the fabric is full-fabric. Only one cloth piece mode can be adopted under the same working condition.
As shown in fig. 6 and 7, the material of the temperature-equalizing copper sleeve 8 is beryllium copper, which has good wear resistance and thermal conductivity, after the TEC electronic temperature control sheet is mounted and the wiring is completed, the thermal arrangement and the roller core 1 realize interference fit, so that the overall temperature equalization of the roller core can be realized, the point cooling source of the TEC electronic temperature control sheet is ensured, and the overall and uniform cooling function can be realized. The roller sleeve 7 and the temperature-equalizing copper sleeve 8 are assembled together in an interference hot-charging mode. Before working, cooling water is firstly introduced to ensure normal operation of a cooling circulation closed loop, and then a direct current power supply is introduced to ensure that the TEC electronic temperature control plate can be driven to work after working stably.
In the embodiment, the TEC electronic temperature control sheet is arranged on the roll core of the casting roll, and the roll sleeve is cooled by using an electronic temperature control technology, so that a cooling water channel is replaced, the cooling effect is enhanced, the cooling speed is increased, and the strength of the roll core is further enhanced; the contact surface of the roller core and the roller sleeve is not provided with a cooling water path, and the joint of the roller core and the roller sleeve does not need to be welded and sealed, so that the assembly difficulty is reduced, the replacement speed of the roller sleeve is improved, and the production line efficiency is increased; the cooling capacity is provided by the TEC electronic temperature control chip which is an independent current transduction piece, and the cooling effect is uniform.
The specific operation steps are as follows:
the method comprises the following steps:
(1) obtaining the refrigerating capacity Qc of the TEC electronic temperature control chip by the basic principle of thermoelectric effect:
Figure BDA0003463601820000071
wherein Qc is the refrigerating capacity of a single group of thermopiles (the thermopile is a semiconductor pair and is also the most basic thermoelectric unit, 127 thermopiles are arranged in each TEC electronic temperature control chip), K is the total thermal conductance of the thermopiles, and T is the total thermal conductance of the thermopilescIs the cold end temperature, R is the total resistance of the thermopile, Delta T is the temperature difference between the cold end and the hot end of the thermopile, and I is the current magnitude; alpha is alphaabIs the seebeck coefficient;
(2) calculating to obtain the power P of the single TEC electronic temperature control wafer (127 Qc);
(3) determining the total heat Q according to the heat exchange coefficient required by the casting and rolling cooling under various working conditions;
(4) determining the number of the distributed sheets according to the constraint condition that the number of the distributed sheets is greater than the total heat Q by the power P of the single sheets; further determining the cloth mode according to the number of the cloth;
(5) and according to the calculation result, carrying out step-type grading on the cooling power of the TEC electronic temperature control chip, wherein the grading is 5 grades which are 1-5A five grades respectively.
During working, the computer can make adjustment in time according to specific working conditions.
Step two: and (4) making a corresponding film distribution strategy according to the required working condition, wherein the TEC electronic temperature control film grooves are made according to the minimum distance, and the film distribution mode can be distributed for the separation grooves. In this embodiment, the sheet is fully laid.
Step three: after the piece distribution is finished, the signal acquisition system and the direct-current power supply are connected, and the power-on test and the signal acquisition test are carried out, so that each system is ensured to work normally.
Step four: and (3) carrying out interference hot-fitting on the uniform-temperature copper sleeve and the roller sleeve on the roller core by utilizing the principle of expansion with heat and contraction with cold.
Step five: before formal work, testing whether the cooling circulation system works normally; testing whether the signal acquisition system works normally and carrying out balance zero clearing; carrying out short circuit test on the direct current power supply; and carrying out short-time power-on test on the TEC electronic temperature control sheet to detect whether each sensor is abnormal.
Step six: when the roll sleeve is formally operated, the TEC electronic temperature control wafer is started according to a preset power level, if the temperature of the roll sleeve rises or falls due to the influence of the pouring temperature or the non-ideal side sealing device and other problems in the casting and rolling process, the temperature sensor transmits a temperature change signal to the signal acquisition system, and the computer adjusts the power level of the TEC electronic temperature control wafer by adopting a control strategy. Thereby ensuring the stability of the whole working process.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (8)

1. The internal quick-cooling internal-cooling type roller based on the thermoelectric effect is characterized by comprising a roller core, a roller sleeve and a temperature-equalizing copper sleeve;
the surface of the roller core roller body is uniformly provided with a plurality of TEC electronic temperature control sheet grooves for arranging TEC electronic temperature control sheets based on thermoelectric effect along the axial direction and the circumferential direction; the size of the TEC electronic temperature control sheet groove is consistent with that of the TEC electronic temperature control sheet;
each row of TEC electronic temperature control sheet grooves in the axial direction of the surface of the roller core roller body are provided with wire grooves along the same direction, and wires are routed along the wire grooves; a row of TEC electronic temperature control plates are connected in series by the conducting wire to form a regulation and control unit;
a cooling water channel is arranged on the side surface of the roller core roller body routing corresponding to each regulating and controlling unit, and cooling water is introduced into the cooling water channel and used for taking away heat extracted by the TEC electronic temperature control sheet from the roller sleeve;
and temperature sensors are pasted at two ends of each TEC electronic temperature control sheet and connected to a signal acquisition system, so that the temperature of the cooling side of the roller core and the temperature of the cooling water side are monitored in real time during working, and the output power of the TEC electronic temperature control sheets is convenient to adjust.
2. The roller as claimed in claim 1, wherein the roller is characterized in that the required spacing between the TEC electronic temperature control plates under each condition is calculated according to the condition of the roller, the number of the TEC electronic temperature control plates is determined according to the spacing, and the number of the TEC electronic temperature control plates is arranged.
3. The roller as claimed in claim 2, wherein a TEC plate is disposed in each TEC plate slot.
4. The roller as claimed in claim 2, wherein a TEC plate is disposed in every other at least one TEC plate groove.
5. The internal quick-cooling and internal-cooling type roller based on the thermoelectric effect as claimed in claim 1, wherein the material of the temperature-equalizing copper sleeve is beryllium copper.
6. The internal quick-cooling inner-cooling type roll based on thermoelectric effect as claimed in claim 1, wherein: the roller core is assembled with the temperature-equalizing copper sleeve, the temperature-equalizing copper sleeve and the roller sleeve in an interference hot-charging mode.
7. A method for controlling the temperature of an internal quick-cooling inner-cooling type roller based on thermoelectric effect as claimed in any one of claims 1 to 7, wherein the method comprises:
determining the quantity and the mode of the distributed pieces according to the required working condition, and arranging the TEC electronic temperature control pieces according to the quantity and the mode of the distributed pieces;
after the piece distribution is finished, connecting the signal acquisition system and the direct-current power supply, and carrying out a power-on test and a signal acquisition test to ensure that each system works normally;
the temperature-equalizing copper sleeve and the roller sleeve are subjected to interference hot-fitting on the roller core by utilizing the principle of expansion with heat and contraction with cold;
testing whether the cooling circulation system works normally; testing whether the signal acquisition system works normally and carrying out balance zero clearing; carrying out short circuit test on the direct current power supply; carrying out short-time power-on test on the TEC electronic temperature control sheet, and detecting whether each sensor is abnormal or not;
and during formal work, the TEC electronic temperature control plate is started according to a preset power level, the temperature sensor transmits a temperature change signal to the signal acquisition system, and the computer adjusts the power level of the TEC electronic temperature control plate according to a control strategy.
8. The temperature control method according to claim 7, wherein determining the number of pieces and the manner of the pieces according to the required working conditions comprises:
obtaining the refrigerating capacity Qc of the TEC electronic temperature control chip by the basic principle of thermoelectric effect:
Figure FDA0003463601810000021
where Qc is the cooling capacity of a single set of thermopiles, K is the total thermal conductance of the thermopiles, and T iscIs the cold end temperature, R is the total resistance of the thermopile, Delta T is the temperature difference between the cold end and the hot end of the thermopile, and I is the current magnitude; alpha is alphaabIs the seebeck coefficient; the thermopile is a semiconductor pair and is also the most basic thermoelectric unit, and 127 thermopiles are arranged in each TEC electronic temperature control chip;
calculating to obtain the power P of the single TEC electronic temperature control wafer (127 Qc);
determining the total heat Q according to the heat exchange coefficient required by the casting and rolling cooling under the required working condition;
determining the number of the distributed sheets according to the constraint condition that the number of the distributed sheets is greater than the total heat Q by the power P of the single sheets;
and determining the cloth mode according to the number of the cloth.
CN202210023644.7A 2022-01-10 2022-01-10 Internal quick-cooling and internal-cooling type roller based on thermoelectric effect and temperature control method thereof Active CN114406217B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004100280A1 (en) * 2003-05-08 2004-11-18 Ishikawajima-Harima Heavy Industries Co., Ltd. Thermoelectric semiconductor material, thermoelectric semiconductor element therefrom, thermoelectric module including thermoelectric semiconductor element and process for producing these
CN105188317A (en) * 2015-09-07 2015-12-23 上海交通大学 Active thermoelectric cooling system for electronic device in severe working conditions
CN106424615A (en) * 2016-07-13 2017-02-22 江苏东顺新能源科技有限公司 Cooling device of lead plate roller
CN210080359U (en) * 2018-12-16 2020-02-18 四川振鸿钢制品有限公司 Hydraulic roller device
CN213409825U (en) * 2020-09-22 2021-06-11 徐州亚华同创节能环保科技有限公司 Wear-resisting roller convenient to heat dissipation
CN113560350A (en) * 2021-07-20 2021-10-29 燕山大学 Roller abrasion self-healing device and control method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004100280A1 (en) * 2003-05-08 2004-11-18 Ishikawajima-Harima Heavy Industries Co., Ltd. Thermoelectric semiconductor material, thermoelectric semiconductor element therefrom, thermoelectric module including thermoelectric semiconductor element and process for producing these
CN105188317A (en) * 2015-09-07 2015-12-23 上海交通大学 Active thermoelectric cooling system for electronic device in severe working conditions
CN106424615A (en) * 2016-07-13 2017-02-22 江苏东顺新能源科技有限公司 Cooling device of lead plate roller
CN210080359U (en) * 2018-12-16 2020-02-18 四川振鸿钢制品有限公司 Hydraulic roller device
CN213409825U (en) * 2020-09-22 2021-06-11 徐州亚华同创节能环保科技有限公司 Wear-resisting roller convenient to heat dissipation
CN113560350A (en) * 2021-07-20 2021-10-29 燕山大学 Roller abrasion self-healing device and control method thereof

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