CN112014426B - Steel billet heat transfer experiment table - Google Patents
Steel billet heat transfer experiment table Download PDFInfo
- Publication number
- CN112014426B CN112014426B CN202011027227.7A CN202011027227A CN112014426B CN 112014426 B CN112014426 B CN 112014426B CN 202011027227 A CN202011027227 A CN 202011027227A CN 112014426 B CN112014426 B CN 112014426B
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- billet
- workbench
- heat transfer
- steel
- cavity
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- 238000012546 transfer Methods 0.000 title claims abstract description 20
- 238000002474 experimental method Methods 0.000 title claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 title claims description 69
- 239000010959 steel Substances 0.000 title claims description 69
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 15
- 238000009749 continuous casting Methods 0.000 abstract description 5
- 238000005266 casting Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000004364 calculation method Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000009529 body temperature measurement Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Continuous Casting (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a billet heat transfer experiment table, in particular to the technical field of billet production, which comprises a workbench, wherein a first cavity and a second cavity are embedded in the workbench, a high-temperature injector for heating a billet is arranged in the first cavity, a high-speed fan for cooling the billet is arranged in the second cavity, mounting components for fixing the billet are mounted on the surface of the workbench, two servo electric push rods capable of synchronously lifting are arranged on two sides of the mounting components and are fixed on the workbench, a sliding rail is connected between the top ends of output shafts of the two servo electric push rods, and a temperature measuring component capable of sliding left and right is mounted outside the sliding rail. The invention can provide necessary experimental data for the design and operation of the continuous casting secondary cooling section, is beneficial to improving the casting blank quality, has short operation process, no complex adjustment and calculation process, is easy to start, can complete the experiment of heat transfer with simple control, and is easy to popularize and use.
Description
Technical Field
The invention relates to the technical field of billet production, in particular to a billet heat transfer experiment table.
Background
In the continuous casting process, the heat exchange of the casting blank and the cooling water is affected by a plurality of factors, and in the actual simulation calculation, the factors are attributed to a heat exchange efficiency value, namely a heat exchange coefficient (h). The modeling process of the continuous casting secondary cooling zone is actually a process of determining the heat exchange coefficient, namely, finding out the internal relation between the convective heat exchange coefficient and the related physical quantity affecting the convective heat exchange coefficient, and obtaining a specific mathematical expression. At present, the comprehensive heat exchange coefficient value is calculated according to a similar method of physical conditions, and the calculated result is not accurate enough, which is not beneficial to improving the quality of the steel billet.
Disclosure of Invention
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a steel billet heat transfer experiment table, includes the workstation, inlay on the workstation and be equipped with first cavity and second cavity, be equipped with the high temperature sprayer that is used for heating the steel billet in the first cavity, be equipped with the high-speed fan that is used for the steel billet cooling in the second cavity, workstation surface mounting has the installation component that is used for fixing the steel billet, the both sides of installation component are equipped with two servo electric putter that go up and down in step, and are fixed in on the workstation, two be connected with the slide rail between servo electric putter output shaft top, but the externally mounted of slide rail side-to-side sliding temperature measurement subassembly.
In a preferred embodiment, the installation component includes two bases of symmetry on the workstation, be fixed with outer steel ring on the base, the inside rotatable interior steel ring that is equipped with of outer steel ring, interior steel ring is connected with the toothed ring of coaxial setting, the inside a plurality of fixed plates that are equipped with of interior steel ring, be connected with the adjustable telescopic link of length between fixed plate and the interior steel ring.
In a preferred embodiment, two of the inner steel rings are internally provided with a steel billet, and a plurality of the fixing plates are pressed on the outer wall of the steel billet.
In a preferred embodiment, a driving motor is fixed on the workbench, a connecting gear is fixed at the end part of an output shaft of the driving motor, and the connecting gear is in meshed connection with the toothed ring.
In a preferred embodiment, the top of the first and second chambers are open.
In a preferred embodiment, a plurality of fixing tables for supporting are installed at the bottom of the workbench, and an oxygen delivery pump is arranged at the bottom of the first chamber and is communicated with the interior of the first chamber through a pipeline.
In a preferred embodiment, the temperature measuring assembly comprises a sliding box sliding left and right on a sliding rail, a thermocouple is arranged at the bottom of the sliding box, and the thermocouple is located right above the steel billet.
In a preferred embodiment, a control box is further arranged on the workbench, and a microprocessor is arranged in the control box and is electrically connected with the thermocouple.
The invention has the technical effects and advantages that:
1. counting and measuring through the temperature change condition of the system in the billet heating process, so as to obtain the change of the thermophysical quantity in the heat transfer process, and then reversely calculating the comprehensive heat exchange coefficient of the surface of the casting blank through a reverse heat transfer program by utilizing the temperature measurement value, thereby providing necessary experimental data for the design and operation of the continuous casting secondary cooling section and being beneficial to improving the quality of the casting blank;
2. the invention has simple structure, short operation process, no complex adjustment and calculation process, easy operation, and easy popularization and use, and can complete the experiment of heat transfer only by simple control.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
FIG. 2 is a schematic view of a portion of the structure of the mounting assembly of the present invention.
The reference numerals are: the device comprises a workbench, a first chamber, a second chamber, a high-temperature injector, a high-speed fan, a servo motor driven push rod, a sliding rail, a temperature measuring assembly, a base, an outer steel ring, an inner steel ring, a toothed ring, a fixed plate, a telescopic rod, a steel billet, a driving motor, a connecting gear, a fixed table, a sliding box, a thermocouple and a control box, wherein the workbench is 1, the first chamber, the second chamber, the high-temperature injector, the high-speed fan, the mounting assembly, the servo motor driven push rod, the sliding rail, the temperature measuring assembly, the base, the outer steel ring, the inner steel ring, the toothed ring, the fixed plate, the telescopic rod, the steel billet, the driving motor, the connecting gear, the fixed table, the connecting gear and the thermocouple are arranged, the fixed table are arranged at the bottom, the connecting gear and the control box are arranged at the left and right, and the control box are arranged at the left and right.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description. The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
The steel billet heat transfer experiment table shown in fig. 1-2 comprises a workbench 1, a first chamber 2 and a second chamber 3 are embedded on the workbench 1, a high-temperature injector 4 for heating a steel billet 16 is arranged in the first chamber 2, a high-speed fan 5 for cooling the steel billet 16 is arranged in the second chamber 3, a mounting assembly 6 for fixing the steel billet 16 is arranged on the surface of the workbench 1, two servo electric push rods 7 which synchronously lift are arranged on two sides of the mounting assembly 6 and are fixed on the workbench 1, a sliding rail 8 is connected between the top ends of output shafts of the two servo electric push rods 7, a temperature measuring assembly 9 capable of sliding left and right is arranged outside the sliding rail 8, and the tops of the first chamber 2 and the second chamber 3 are open;
in the working process, a steel billet 16 is fixed in the mounting assembly 6, the servo electric push rod 7 works to drive the sliding rail 8 to lift, the height of the temperature measuring assembly 9 is adjusted, the high-temperature injector 4 heats the steel billet 16 to enable the temperature of one end of the steel billet 16 to rise to the height required during heat transfer, and the high-speed fan 5 cools the other end of the steel billet 16 to enable the two ends of the steel billet 16 to be kept at different temperatures;
the installation assembly 6 comprises two bases 10 which are symmetrical to the workbench 1, an outer steel ring 11 is fixed on the bases 10, a rotatable inner steel ring 12 is arranged inside the outer steel ring 11, the inner steel ring 12 is connected with a toothed ring 13 which is coaxially arranged, a plurality of fixing plates 14 are arranged inside the inner steel ring 12, a telescopic rod 15 with adjustable length is connected between the fixing plates 14 and the inner steel ring 12, steel billets 16 are arranged inside the two inner steel rings 12, the plurality of fixing plates 14 are pressed on the outer walls of the steel billets 16, in the experimental process, the steel billets 16 are placed inside the two inner steel rings 12, and meanwhile, the length of the telescopic rod 15 is adjusted, so that the plurality of fixing plates 14 can be pressed outside the steel billets 16, and the steel billets 16 can be stably installed inside the inner steel rings 12;
a driving motor 17 is fixed on the workbench 1, a connecting gear 18 is fixed at the end part of an output shaft of the driving motor 17, the connecting gear 18 is meshed and connected with the toothed ring 13, and when the driving motor 17 rotates, the toothed ring 13 is driven to rotate due to the meshing of the connecting gear 18 and the toothed ring 13, so that the inner steel ring 12 rotates in the outer steel ring 11, and the steel billet 16 rotates in the rotating process of the inner steel ring 12;
the bottom of the workbench 1 is provided with a plurality of fixing tables 19 for supporting, the bottom of the first chamber 2 is provided with an oxygen delivery pump, the oxygen delivery pump is communicated with the inside of the first chamber 2 through a pipeline, and when the high-temperature injector 4 injects high-temperature flame, the oxygen delivery pump delivers oxygen to the inside of the first chamber 2 so as to raise the flame combustion temperature and the heating effect;
the temperature measuring assembly 9 comprises a sliding box 20 sliding left and right on the sliding rail 8, a thermocouple 21 is arranged at the bottom of the sliding box 20, the thermocouple 21 is positioned right above the steel billet 16, a control box 22 is further arranged on the workbench 1, a microprocessor is arranged in the control box 22, and the microprocessor is electrically connected with the thermocouple 21;
on the basis of the above, when the billet 16 is heated, the billet 16 can be rotated to raise the temperature raising speed, and the surface temperature of the heated part is more uniform, after the heating is completed, the sliding box 20 is controlled to move left and right on the sliding rail 8, the thermocouple 21 on the sliding box 20 is used for measuring the temperature of the heated part of the billet 16, the temperature change condition of the heated part is measured, after the measurement, the temperature measuring component 9 is moved slowly to the cooling position of the high-speed fan 5, and in the moving process, the temperature change condition of the surface of the billet 16 is measured, when the cooled part of the high-speed fan 5 is moved, the temperature change data of the position is measured, and the data is recorded by a computer, so that the change of the thermophysical quantity in the heat transfer process is obtained, and then the comprehensive heat exchange coefficient of the surface of the billet is calculated by the temperature measurement value through the reverse heat transfer program, so that necessary experimental data is provided for the design and operation of the continuous casting secondary cooling section, and the quality of the billet is improved.
It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present invention without the inventive step, are intended to be within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (8)
1. The steel billet heat transfer experiment table is characterized by comprising a workbench, wherein a first cavity and a second cavity are embedded in the workbench, a high-temperature injector for heating a steel billet is arranged in the first cavity, a high-speed fan for cooling the steel billet is arranged in the second cavity, a mounting assembly for fixing the steel billet is arranged on the surface of the workbench, two servo electric push rods which are synchronously lifted are arranged on two sides of the mounting assembly and are fixed on the workbench, a sliding rail is connected between the top ends of output shafts of the two servo electric push rods, and a temperature measuring assembly capable of sliding left and right is arranged outside the sliding rail;
the high-temperature ejector heats the steel billet to enable the temperature of one end of the steel billet to be increased to the height required by heat transfer, and the high-speed fan cools the other end of the steel billet to enable the two ends of the steel billet to be kept at different temperatures.
2. A billet heat transfer laboratory bench according to claim 1, wherein: the installation component is including two bases of symmetry on the workstation, be fixed with outer steel ring on the base, the inside rotatable interior steel ring that is equipped with of outer steel ring, interior steel ring is connected with the toothed ring of coaxial setting, the inside a plurality of fixed plates that are equipped with of interior steel ring, be connected with the telescopic link of adjustable length between fixed plate and the interior steel ring.
3. A billet heat transfer laboratory bench according to claim 2, wherein: and steel billets are arranged in the two inner steel rings, and a plurality of fixing plates are pressed on the outer walls of the steel billets.
4. A billet heat transfer laboratory bench according to claim 2, wherein: the workbench is fixedly provided with a driving motor, the end part of an output shaft of the driving motor is fixedly provided with a connecting gear, and the connecting gear is meshed with the toothed ring.
5. A billet heat transfer laboratory bench according to claim 1, wherein: the tops of the first chamber and the second chamber are open.
6. A billet heat transfer laboratory bench according to claim 1, wherein: the workbench is characterized in that a plurality of fixing tables used for supporting are arranged at the bottom of the workbench, an oxygen delivery pump is arranged at the bottom of the first cavity, and the oxygen delivery pump is communicated with the inside of the first cavity through a pipeline.
7. A billet heat transfer laboratory bench according to claim 3, wherein: the temperature measuring assembly comprises a sliding box sliding left and right on the sliding rail, a thermocouple is arranged at the bottom of the sliding box, and the thermocouple is located right above the steel billet.
8. A billet heat transfer bench according to claim 7, wherein: the workbench is also provided with a control box, a microprocessor is arranged in the control box, and the microprocessor is electrically connected with the thermocouple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011027227.7A CN112014426B (en) | 2020-09-25 | 2020-09-25 | Steel billet heat transfer experiment table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011027227.7A CN112014426B (en) | 2020-09-25 | 2020-09-25 | Steel billet heat transfer experiment table |
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| Publication Number | Publication Date |
|---|---|
| CN112014426A CN112014426A (en) | 2020-12-01 |
| CN112014426B true CN112014426B (en) | 2023-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011027227.7A Active CN112014426B (en) | 2020-09-25 | 2020-09-25 | Steel billet heat transfer experiment table |
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| CN115078453B (en) * | 2022-06-13 | 2023-06-09 | 山东美生热能科技有限公司 | Heat conduction coefficient rapid detection system for heat insulation oil sleeve |
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| CN112014426A (en) | 2020-12-01 |
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