Non-contact converter continuous temperature measurement device and method

Abstract

The present invention discloses a non-contact converter continuous temperature measurement device and method, comprising: a temperature measurement device, including an infrared camera arranged toward a temperature measurement area, and a cooling protection cylinder for fixing and accommodating the infrared camera and cooling the infrared camera therein; a computer control system for controlling the actions of a pitch motion device and a horizontal circumferential motion device, while acquiring images from the infrared camera, and converting the images into corresponding data for display. Autonomous continuous temperature measurement can be achieved during converter steelmaking, greatly improving temperature measurement efficiency and detection accuracy, and reducing human resources and initial cost investment.

Description

Technical Field

[0001] The invention relates to the field of metal smelting, and in particular to a temperature detection technology in a converter steelmaking process. Background Art

[0002] In the steelmaking process, temperature control is a very important link, which determines the specific direction of the later steelmaking. Too high or too low temperature will have more or less impact on production. When the temperature is too high, the fluidity of the molten steel is large, which can easily cause the molten steel to splash everywhere during the smelting process, posing a safety hazard, and also affecting the service life of nearby production equipment; when the temperature is too low, it is easy for the smelting to be incomplete, and secondary or multiple smelting is required, which will increase the oxidation of the molten steel and increase energy consumption. It will also cause the later processes (such as continuous casting, etc.) to be unable to proceed normally, affecting the production rhythm, and even worse, causing the production line to stop production, causing huge economic losses. In order to better avoid the above problems caused by inaccurate temperature measurement, a device that can accurately measure the temperature during the steelmaking process is particularly important.

[0003] At present, most steel mills on the market use manual thermocouple temperature measurement, that is, handheld auxiliary gun temperature measurement. The main part of the auxiliary gun is the thermocouple. The worker inserts the handheld auxiliary gun into the molten steel to a certain depth and takes it out of the molten steel after waiting for a certain period of time. The thermocouple temperature measuring device is useless after it is taken out. At this time, the measured temperature data is transmitted to the corresponding database storage through the data line at the other end of the thermocouple. In the whole process, the insertion depth and waiting time, etc., need to be judged manually through experience. The judgment process is easily affected by the worker's working status and work experience at the time, resulting in poor stability of the judgment result. The whole process requires full human participation, and the harsh environment will damage the physical and mental health of the workers. In addition, the thermocouple used for temperature measurement is a disposable item, which cannot be used multiple times during the temperature measurement process, and continuous temperature measurement cannot be achieved. A few steel mills have introduced robots to complete temperature measurement by imitating manual operation procedures. However, the introduced robot system is large, costly, difficult to maintain, and affected by the on-site processing environment and overall layout, the use of robots will have certain limitations.

[0004] Therefore, a converter temperature measuring device and method with simple maintenance, strong applicability and continuous temperature measurement should be sought. The device can independently complete the temperature measurement without the workers' experience and judgment, and can control the error to the minimum. Summary of the invention

[0005] In view of the above reasons and the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a non-contact converter continuous temperature measurement device and method, so as to realize autonomous continuous temperature measurement in the converter steelmaking process, greatly improve the temperature measurement efficiency and detection accuracy, and reduce the investment in human resources and initial costs.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A non-contact converter continuous temperature measurement device, characterized by comprising:

[0008] The temperature measuring device comprises an infrared camera arranged toward the temperature measuring area, and a cooling protection cylinder for fixing and accommodating the infrared camera and cooling the infrared camera in the cylinder through cooling air;

[0009] A pitching device is used to support the cooling protection tube and drive the cooling protection tube to pitch to complete vertical scanning and temperature measurement;

[0010] The horizontal circumferential motion device is connected to the lower part of the pitch motion device through a rotating shaft component, and operates in conjunction with the pitch motion device to drive the cooling protection cylinder to rotate horizontally to complete horizontal scanning and temperature measurement.

[0011] The computer control system is used to control the actions of the pitch motion device and the horizontal circumferential motion device, and at the same time obtain the image of the infrared camera and convert the image into corresponding data for display.

[0012] In the above technical solution, the lower fixed bracket of the cooling protection cylinder is connected to the horizontal circumferential motion device through a vertically arranged rotating shaft, and the vertically arranged rotating shaft is driven by a cylinder to rotate horizontally.

[0013] In the above technical solution, the pitch motion device and the horizontal circumferential motion device do not operate at the same time.

[0014] In the above technical solution, the center of the infrared camera is located at the center of the protective sleeve body.

[0015] In the above technical solution, a pneumatic cooling circuit system for cooling the infrared camera is arranged in the body of the cooling protection tube, and the pneumatic cooling circuit system is electrically connected to the computer control system and is controlled by the computer control system.

[0016] In the above technical solution, the pneumatic cooling circuit system includes an air source, an air pipe, a solenoid valve, a throttle valve, a manifold, a triplet and various valve switches. The components are connected through various suitable pipe joints. The connected air circuits are used for two purposes. One circuit is used as power to drive the rotating cylinder and the clamping device to move, and the other circuit is used as cooling air to flow into the outer shell and interior of the cooling protection tube, thereby playing a role in cooling and dust removal at the lens mouth.

[0017] In the above technical solution, a protective sleeve rotating shaft is arranged on the busbars on both sides of the cooling protective cylinder, and the protective sleeve rotating shaft is rotatably supported by the end cover bearing seat; the protective sleeve rotating shaft is connected to the rotating cylinder.

[0018] In the above technical solution, a clamping device for clamping, embracing or loosening the rotating shaft is provided at the rotating shaft of the protective sleeve and the vertically arranged rotating shaft shaft rod, and the clamping device includes two clamping blocks that can move linearly towards and away from each other, and each clamping block is connected and positioned by a compression spring column on its own side, and each compression spring column is fixed on a spring adjustment seat, and each clamping block is driven by a finger cylinder to move.

[0019] The clamping block is fixed on the finger of the finger cylinder and moves with the finger cylinder; when not rotating, the finger cylinder is configured to press the finger under the action of spring force, and at the same time press the clamping block to clamp the rotating shaft, so that the clamping device is in a clamped state; when rotation is required, the finger cylinder will release the finger under the action of the driving force, and at the same time drive the clamping block to be released, so that the device is in a loosened state, which is convenient for rotation.

[0020] In the above technical solution, an outer tube opening is arranged outside the end of the protective sleeve body where the infrared camera is arranged, the inner tube opening is inside the outer tube opening and fixed on the protective sleeve body, and a filter is arranged at the outer tube opening; a rear cover bracket and a camera bracket are arranged in the protective sleeve body, a rear cover is fixed on the rear cover bracket to close the protective sleeve body, and an infrared camera is arranged on the camera bracket.

[0021] A non-contact converter continuous temperature measurement method is characterized by: using an infrared camera to measure the temperature of molten steel in the converter, performing a sweeping temperature measurement of the regional surface by performing a pitching motion and a horizontal circumferential motion of the infrared camera, and obtaining a temperature measurement image and displaying the data through a computer control system.

[0022] Preferably, the computer control system module includes two parts: hardware and software. The software includes programming software and configuration software. The hardware includes a computer, a PLC, a power supply, an input module, an output module, a temperature sensor, a network cable, and a button. The two parts are used together, the software part is loaded into the hardware, and the control action of the entire device is completed through relevant communications.

[0023] Preferably, compared with the prior art, the present invention has the following beneficial effects:

[0024] 1: Using infrared cameras to measure the temperature of molten steel in the converter can achieve continuous temperature measurement in a short period of time, and the measured area is a surface, so the collected data is more representative. At the same time, temperature measurement by infrared cameras can achieve non-contact temperature measurement, avoiding the physical and mental harm caused by close-range temperature measurement, which is in line with the humanistic development of modern processing and production industries.

[0025] 2: The device adopts a modular concept, designs each part into modules, and then connects them accordingly. The device is light and compact, which is convenient for later transportation, installation, disassembly and maintenance, and the installation method is flexible. The device is designed with two types of floor-standing installation and hanging installation, and can be installed in a suitable way according to the on-site environment.

[0026] 3: Taking into account the places where the present invention is applied, the present invention decides to use local materials and utilize the gas available on site as power gas and cooling gas to achieve driving and cooling of the device, reduce capital investment, effectively reduce production costs, and maximize benefits.

[0027] 4: The device invented a cooling protective tube. In order to avoid the safety hazards caused by water cooling during use, the cooling device decided to use gas to cool the camera. This can not only ensure the safety during use, but also ensure that the camera can operate normally during work.

[0028] 5: The entire device can be used continuously for a long time, and during use, no waste that needs to be recycled multiple times will be generated. It is clean and pollution-free, and complies with the national environmental protection policies.

[0029] 6: The device is controlled through the computer control system module to realize the automation of each process event. The high degree of automation greatly reduces the manual operation of the existing system, liberates and develops productivity, and lays the foundation for the intelligent control of steelmaking production. It is in line with the current trend of high-quality development and humanistic development of society, vigorously promotes smart manufacturing, and enhances the social image of the steel plant.

[0030] In summary, the present invention has the advantages of high temperature measurement efficiency, wide and continuous collection range, high measurement accuracy, etc. The device adopts modular design, easy maintenance, easy installation and disassembly, the entire device system is complete, the initial investment cost is low, but it can achieve high returns. The device uses a computer control system to realize the automation of various process events, without too much manual labor, reducing the investment in labor costs. At the same time, the device can measure at a distance from the object to be measured, which can reduce the physical and mental harm of the operating workers at the production and processing site to a certain extent. During the temperature measurement process, no waste that needs to be recycled will be generated, which is in line with the development route, principles and policies of green environmental protection, and in line with high-quality development, laying the foundation for the later promotion of smart manufacturing and intelligent production. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is an overall structural diagram of a non-contact converter continuous temperature measurement device according to an embodiment of the present invention.

[0032] Figure 2It is a schematic diagram of the upper part of the structure of a non-contact converter continuous temperature measurement device according to an embodiment of the present invention;

[0033] Figure 3 It is a schematic diagram of the lower half of the structure of a non-contact converter continuous temperature measurement device according to an embodiment of the present invention;

[0034] Figure 4 It is a schematic diagram of the structure of the pitch drive device of the present invention;

[0035] Figure 5 It is a schematic diagram of the structure of the horizontal circumferential drive device of the present invention;

[0036] Figure 6 It is a schematic diagram of the structure of the pitch clamping device of the present invention;

[0037] Figure 7 It is a schematic diagram of the structure of the horizontal circumferential clamping device of the present invention;

[0038] Figure 8 It is a structural schematic diagram of the transmission shaft part of the present invention;

[0039] Fig. 9 It is a schematic diagram of the overall structure of the cooling protection tube of the present invention;

[0040] Fig.10 It is a schematic diagram of the rear cover support structure of the cooling protection tube of the present invention.

[0041] Fig.11 It is a schematic diagram of the internal structure of the cooling protection tube of the present invention. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clearly understood, the following is a detailed description of the present invention through specific embodiments and in combination with the attached drawings. Figures 1 to 11 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] like Figures 1 to 11According to the present invention, a non-contact converter continuous temperature measurement device is implemented, which uses a temperature detection system and a computer control system to complete the continuous temperature measurement during the converter steelmaking process. Figures 1 to 9 As shown, the device can be divided into three major parts, such as Figures 1 to 3 As shown, it includes a temperature measuring device cooling protection cylinder, a pitching motion component and a horizontal circumferential motion component. The temperature measuring device is fixed on the pitching motion component. The pitching motion component and the horizontal circumferential motion component are connected and driven by a transmission shaft to realize the linkage of the upper and lower parts in the pitching and horizontal circumferential rotation, and complete the continuous temperature measurement process of converter steelmaking. The main components include a cooling protection cylinder 1, a pitching clamping device 2, a fixed bracket 3, a pitching driving device 4, a horizontal circumferential driving device 5, a transmission shaft component 6, and a horizontal circumferential clamping device 7.

[0045] like Figure 4 As shown, the pitch drive device 4 includes a flange connection plate 8, a pitch drive fixed mounting plate 9, a reinforcement plate 10, a rotating cylinder mounting plate 11, and a rotating cylinder 12. The pitch drive device 4 is connected to one side of the cooling protection cylinder 1 in the upper part of the device by bolts. Driven by the pneumatic system, the rotating cylinder 12 starts to rotate and is connected through the flange connection plate 8 and the key to drive the pitch inclination movement of the cooling protection cylinder 1.

[0046] like Figure 5 As shown, the horizontal circumferential drive device 7 includes a cylinder-connected vertical bracket 13, a flange-connected plate component 14 (including Figure 7 The lower flange connecting plate 36 in the middle) and the rotating cylinder 15 are connected to the end cover bearing seat 32 of the transmission shaft component 6 by bolts. Driven by the pneumatic system, the rotating cylinder 15 starts to rotate, and the transmission shaft 35 is rotated and output through the flange connecting plate component 14 and the key transmission.

[0047] The transmission shaft component 6, such as Figure 8 , including a shaft end cover 32, an upper flange connection plate 33, an end cover bearing seat 34, a transmission shaft 35, and a lower flange connection plate 36. The shaft end cover 32 is fixed to the transmission shaft 35 by bolts. The upper flange connection plate 33 is fixed to the fixed bracket 3 by bolts. The end cover bearing seat 34 is connected to the cylinder connection vertical bracket 13 by bolts. The lower flange connection plate 36 is fixed to the rotating cylinder 15 by bolts, and the lower flange connection plate 36 moves with the rotating cylinder 15. The transmission shaft is connected to the upper flange connection plate 33 and the lower flange connection plate 36 by keys.

[0048] like Figure 6The pitch clamping device 2 includes a spring adjustment seat 16, a cylindrical helical compression spring 17, a spring guide column 18, a cylinder connecting plate 19, a finger cylinder 20, a spring positioning seat 21, a pitch clamping block 22, and a cylinder seat plate 23. The device is connected to the fixed bracket 3 by bolts. The pitch clamping block 22 clamps the protective sleeve rotating shaft on the busbar side of the cooling protective cylinder 1. When the cooling protective cylinder 1 needs to rotate, the finger cylinder 20 releases the protective sleeve rotating shaft under the action of the pneumatic system; when it does not need to rotate, the finger cylinder 20 will keep the pitch clamping block 22 clamped under the action of the cylindrical helical compression spring 17. In order to achieve a better clamping effect, the present invention performs pattern processing on the arc side of the pitch clamping block 22 to increase the roughness of the contact surface. In order to make the cylindrical helical compression spring 17 smoother during the extension and retraction process, the spring adjustment seat 16, the spring guide column 18 and the spring positioning seat 21 are designed to ensure it from two aspects: at the beginning of installation and during the movement.

[0049] like Figure 7 , the horizontal circumferential clamping device 5 includes a mounting plate 24, a horizontal circumferential clamping block 25, a spring guide column 26, a cylindrical helical compression spring 27, a finger cylinder 28, a cylinder connecting plate 29, a spring adjustment seat 30, and a spring positioning seat 31. The device is connected to the cylinder connecting vertical bracket 13 through the mounting plate 24. The horizontal circumferential clamping block 25 clamps the transmission shaft 35 of the transmission shaft part. When the transmission shaft 35 needs to rotate, the finger cylinder 28 is loosened under the action of the pneumatic system; when it does not need to rotate, the finger cylinder 28 will keep the horizontal circumferential clamping block 25 clamped at all times under the action of the cylindrical helical compression spring 27. In order to achieve a better clamping effect, the present invention performs pattern processing on the arc side of the pitch clamping block 25 to increase the roughness of the contact surface. In order to make the cylindrical helical compression spring 27 smoother during the extension and retraction process, the spring guide column 26, the spring adjustment seat 30 and the spring positioning seat 31 are designed to ensure it from two aspects: at the beginning of installation and during the movement process. As Figure 8 The cooling protective cylinder 1 includes an outer cylinder mouth 37, an inner cylinder mouth 38, a protective sleeve body 39, a protective sleeve rotating shaft 40, a cylinder seat 41, and a rear cover 42. The outer cylinder mouth 37 and the inner cylinder mouth 38 are respectively welded on the protective sleeve body 39, with the outer cylinder mouth outside and the inner cylinder mouth inside the outer cylinder mouth. The protective sleeve rotating shaft 40 is respectively welded on both sides of the protective sleeve body 39, one side is connected to the flange connection plate 8 in the pitch drive device, and the other side is in contact with the pitch clamping block 22 in the pitch clamping device. The cylinder seat 40 is welded on the protective sleeve body 39 to seal and fix the protective sleeve body 39. The rear cover 42 is connected to the cylinder seat 41 by bolts to form a whole.

[0050] like Figure 10-11The cooling protection cylinder 1 is fixed by the rear cover bracket 45, which is connected to the rear cover 42 by bolts. The rear cover bracket 45 is located inside the protective sleeve body 39 and is used to install the infrared temperature measuring camera 43. A sealing ring is installed between the rear cover 42 and the cylinder seat 41. The rear cover 42 is equipped with an air hole interface 44 for connecting the air path. Figure 1 As shown, the lens of the infrared temperature measuring camera 43 faces outward, and can move up and down to sweep and measure temperature continuously through pitching action. The temperature can be measured by horizontal circumferential sweeping through the drive shaft component 6. Temperature detection is performed using an infrared camera, and the local area of ​​the object to be measured is photographed and collected rather than a certain point. The computer then processes the collected area, converts the picture into corresponding data and displays it clearly and intuitively. Taking into account the place where the present invention is applied, the present invention uses local materials and utilizes the gas available on site as power gas and cooling gas to achieve the driving and cooling of the device, reduce capital investment, effectively reduce production costs, and maximize benefits. A gas cooling circuit is set in the cooling protection tube, and the camera is cooled by gas, which can avoid the safety hazards caused by water cooling during use, while ensuring that the camera can operate normally during operation.

[0051] In summary, the present invention provides a non-contact converter continuous temperature measurement device, which can efficiently complete the converter continuous temperature measurement work. Temperature detection is carried out by using an infrared camera, and the local area of ​​the object to be measured is photographed and collected instead of a certain point. Then the computer processes the collected area, and the picture is converted into corresponding data for display, which is clear and intuitive; the entire invention device is controlled by a computer control system to realize the automatic operation of each process event, and reduce the harm to the physical and mental health of personnel who are in the production and processing line for a long time; quantitative operations are carried out by setting good parameters, avoiding the uncertainty errors caused by empirical production and processing during the operation process, and improving the measurement accuracy; reducing the investment in labor costs, and laying the foundation for realizing unmanned production and processing in the future, promoting the development of smart manufacturing and intelligent production; at the same time, the device system is complete, including a temperature measurement system, a cooling protection system, a control system and a gas circuit power cooling system. The device is small and designed with modular ideas, which is convenient for maintenance, installation, transportation and disassembly, and no waste that needs to be recycled is generated during use, which is in line with the development route, principles and policies of green environmental protection.

[0052] The present invention has the advantages of high temperature measurement efficiency, wide and continuous collection range, high measurement accuracy, etc. The device adopts modular design, is easy to maintain, easy to install and disassemble, the entire device system is complete, the initial investment cost is low, but it can achieve high returns. The device uses a computer control system to realize the automation of various process events, without too much manual labor, reducing the investment in labor costs. At the same time, the device can measure at a distance from the object to be measured, which can reduce the physical and mental harm of the operating workers at the production and processing site to a certain extent. During the temperature measurement process, no waste that needs to be recycled will be generated, which is in line with the development route, principles and policies of green environmental protection, and in line with high-quality development, laying the foundation for the later promotion of smart manufacturing and intelligent production.

[0053] Therefore, the present invention has a wide range of application prospects and is worthy of wide promotion. The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, shall be covered within the protection scope of the present invention.

Claims

1. A non-contact converter continuous temperature measurement device, Features include: The temperature measuring device comprises an infrared camera arranged toward the temperature measuring area, and a cooling protection cylinder for fixing and accommodating the infrared camera and cooling the infrared camera in the cylinder through cooling gas; A pneumatic cooling circuit system for cooling the infrared camera is arranged inside the cooling protection tube, and the pneumatic cooling circuit system is electrically connected to the computer control system and is controlled by the computer control system; The pneumatic cooling circuit system includes an air source, an air pipe, a solenoid valve, a throttle valve, a manifold, a triplet and valve switches. The components are connected through various suitable pipe joints. The connected air circuit is used for two purposes. One circuit is used as a power to drive the rotating cylinder and the clamping device to move, and the other circuit is used as cooling air to flow into the outer shell and the interior of the cooling protection tube to play a role in cooling and dust removal at the lens port; the protective sleeve rotating shaft and the vertically arranged rotating shaft shaft are both provided with the clamping device for clamping, embracing or loosening the rotating shaft, and the clamping device includes two clamping blocks that can move linearly to approach and separate, and each clamping block is connected and positioned by a compression spring column on its side, and each compression spring column is fixed on a spring adjustment seat, and each clamping block is driven by a finger cylinder to move; A pitching device is used to support the cooling protection tube and drive the cooling protection tube to pitch to complete vertical scanning and temperature measurement; The horizontal circumferential motion device is connected to the lower part of the pitch motion device through a rotating shaft component, and is linked to the pitch motion device to drive the cooling protection cylinder to rotate horizontally to complete horizontal scanning and temperature measurement; The computer control system is used to control the actions of the pitch motion device and the horizontal circumferential motion device, and at the same time obtain the image of the infrared camera and convert the image into corresponding data for display.

2. The non-contact converter continuous temperature measuring device according to claim 1, Features The lower fixed support of the cooling protection cylinder is connected to the horizontal circumferential motion device through a vertically arranged rotating shaft, and the vertically arranged rotating shaft is driven by a cylinder to rotate horizontally.

3. The non-contact converter continuous temperature measuring device according to claim 1, Features The pitch motion device and the horizontal circumferential motion device do not move at the same time.

4. The non-contact converter continuous temperature measuring device according to claim 1, Features The center of the infrared camera is located at the center of the protective sleeve body.

5. The non-contact converter continuous temperature measurement device according to claim 1, Features A protective sleeve rotating shaft is arranged on the busbars on both sides of the cooling protective cylinder, and the protective sleeve rotating shaft is rotatably supported by the end cover bearing seat; the protective sleeve rotating shaft is connected to the rotating cylinder.

6. The non-contact converter continuous temperature measurement device according to claim 1, Features An outer tube opening is arranged outside the end of the protective sleeve body where the infrared camera is arranged, the inner tube opening is inside the outer tube opening and fixed on the protective sleeve body, and a filter is arranged at the outer tube opening; a rear cover bracket and a camera bracket are arranged in the protective sleeve body, a rear cover is fixed on the rear cover bracket to close the protective sleeve body, and an infrared camera is arranged on the camera bracket.

7. A non-contact converter continuous temperature measurement method, Features The contactless converter continuous temperature measurement device described in any one of claims 1 to 6 is adopted, and an infrared camera is used to measure the temperature of the molten steel in the converter. The temperature measurement of the regional surface is realized by performing pitch and horizontal circumferential movements of the infrared camera, and the temperature measurement image is obtained and the data is displayed through a computer control system.

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