Real-time monitoring device for temperature of steel ladle

Abstract

The utility model provides a steel ladle temperature real-time monitoring device, and the device comprises temperature measurement optical fibers which are distributed optical fibers and are directly laid on a steel ladle shell in a latticed manner; the optical fiber temperature sensing detector is connected with the temperature measuring optical fiber; when the optical fiber temperature-sensitive detector is arranged on the steel ladle shell, the system also comprises a wireless signal transmitting device which is arranged on the steel ladle shell and is connected with the optical fiber temperature-sensitive detector; the wireless signal receiving device is in wireless communication with the wireless signal transmitting device; when the optical fiber temperature sensing detectors are respectively arranged at the temperature measuring points of different stations, the device also comprises a first optical fiber plug which is arranged on the steel ladle shell and is connected with the temperature measuring optical fiber; and the plurality of second optical fiber plugs are respectively arranged at the temperature measuring points of different stations, are correspondingly connected with the optical fiber temperature sensing detectors, and are connected with the first optical fiber plugs when the steel ladle moves to the corresponding station. The multi-station real-time accurate monitoring of the temperature of the steel ladle shell is realized, so that the real-time monitoring of the loss condition of the steel ladle lining is realized, and the occurrence of safety accidents is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of ladle temperature measurement, and in particular to a device for real-time monitoring of ladle temperature. Background Art

[0002] The ladle is an important container for carrying, transporting, smelting and pouring molten steel during the steelmaking process. It has a shell made of steel plates on the outside, a refractory lining in the middle, and molten steel inside. Its service life and safety have a huge impact on the normal operation of steel enterprises.

[0003] In the steelmaking process, the erosion of molten steel, the chemical reactions produced by refining, and the alternating high and low temperature will corrode the lining refractory material of the ladle. If the ladle lining is corroded prematurely or the thermal stress causes the refractory bricks to fall off and is not discovered and repaired in time, it will lead to steel leakage and even casualties. Therefore, it is very important to monitor the temperature of the ladle shell in steelmaking production.

[0004] In the prior art, the lining loss is mainly detected by laser thickness measurement and infrared image analysis. In the laser thickness measurement method, the contour of the ladle lining is scanned by laser to obtain the loss of the ladle refractory material. This method can only be performed when there is no molten steel in the ladle, and it is difficult to detect during the ladle turnover process. The infrared image analysis method uses multiple infrared temperature measuring imagers and non-contact infrared temperature measurement technology to perform infrared temperature measurement on the ladle shell to obtain the temperature distribution of the shell. When the temperature of a certain point on the shell exceeds the warning value, an alarm is issued. During the measurement process, the infrared thermometer generally needs to be fixed in position, and the temperature is measured when the ladle runs to a specific position, which cannot achieve real-time monitoring during the ladle turnover process.

[0005] Therefore, there is an urgent need for a technology that can monitor the temperature of the ladle shell in real time and accurately during the entire steelmaking process. Utility Model Content

[0006] In view of the problems in the prior art, an embodiment of the present application provides a real-time monitoring device for ladle temperature, which can at least partially solve the problems in the prior art.

[0007] The real-time monitoring of ladle temperature provided in this application includes:

[0008] A temperature measuring optical fiber, which is a distributed optical fiber, is laid on the steel ladle cladding in a grid-like manner and is in direct contact with the steel ladle cladding;

[0009] At least one optical fiber temperature sensing detector, arranged on the steel ladle shell or respectively arranged at temperature measuring points at different workstations, and connected to the temperature measuring optical fiber;

[0010] When the optical fiber temperature sensing detector is arranged on the steel ladle shell, it also includes:

[0011] A wireless signal sending device, arranged on the ladle shell and connected to the optical fiber temperature sensing detector;

[0012] A wireless signal receiving device, communicating wirelessly with the wireless signal sending device;

[0013] When the optical fiber temperature sensing detectors are respectively arranged at temperature measuring points of different workstations, the method further comprises:

[0014] A first optical fiber plug is arranged on the steel ladle shell and connected to the temperature measuring optical fiber;

[0015] A plurality of second optical fiber plugs are respectively arranged at temperature measuring points of different workstations and connected to optical fiber temperature sensing detectors of corresponding workstations. When the ladle moves to the corresponding workstation, the first optical fiber plug is connected.

[0016] Wherein, when the optical fiber temperature sensing detector is arranged on the steel ladle shell, it further comprises:

[0017] The battery is arranged on the steel ladle shell and is connected to the optical fiber temperature sensing detector and the wireless signal sending device.

[0018] Among them, it also includes:

[0019] The first fixed shell is arranged on the steel ladle shell, and the optical fiber temperature sensing detector, the wireless signal sending device and the battery are arranged in the first fixed shell.

[0020] Wherein, when the optical fiber temperature sensing detectors are respectively arranged at temperature measuring points of different workstations, it also includes:

[0021] A plurality of brackets are arranged at temperature measuring points at different workstations corresponding to the second optical fiber plug, and the second optical fiber plug is arranged at one end of the corresponding bracket.

[0022] Wherein, when the optical fiber temperature sensing detectors are respectively arranged at temperature measuring points of different workstations, it also includes:

[0023] The second fixed shell is arranged on the steel ladle shell, the first optical fiber plug is arranged in the second fixed shell, and the socket of the first optical fiber plug is embedded in the second fixed shell.

[0024] Among them, it also includes:

[0025] The optical fiber protection plate is fixed on the steel ladle shell and is arranged on the outer side of the temperature measuring optical fiber.

[0026] Among them, it also includes:

[0027] The optical fiber fixing block has an arched structure in the middle and two sides thereof are respectively fixed on the steel ladle shell;

[0028] The temperature measuring optical fiber is arranged inside the arch structure.

[0029] Among them, it also includes:

[0030] The temperature monitoring module is connected to the optical fiber temperature sensing detector for communication, receives the temperature signal sent by the optical fiber temperature sensing detector, and monitors the temperature.

[0031] Among them, it also includes:

[0032] An alarm is connected to the temperature monitoring module and sends out an alarm signal according to the control of the temperature monitoring module.

[0033] Among them, it also includes:

[0034] The storage device is connected to the optical fiber temperature sensing detector for storing the temperature signal collected by the optical fiber temperature sensing detector.

[0035] The real-time monitoring device for ladle temperature provided by the present application is provided with a temperature measuring optical fiber and at least one optical fiber temperature sensing detector, wherein the temperature measuring optical fiber is a distributed optical fiber, which is laid on the ladle cladding in a grid shape and is in direct contact with the ladle cladding; the optical fiber temperature sensing detector is arranged on the ladle cladding or respectively arranged at temperature measuring points at different workstations, and is connected to the temperature measuring optical fiber; when the optical fiber temperature sensing detector is arranged on the ladle cladding, it also includes: a wireless signal sending device, which is arranged on the ladle cladding and is connected to the optical fiber temperature sensing detector; a wireless signal receiving device, which wirelessly communicates with the wireless signal sending device; when the optical fiber temperature sensing detector is respectively arranged at temperature measuring points at different workstations, it also includes: a first optical fiber plug, which is arranged on the ladle cladding and is connected to the temperature measuring optical fiber; a plurality of second optical fiber plugs, which are respectively arranged at temperature measuring points at different workstations and are connected to the optical fiber temperature sensing detectors at corresponding workstations, and when the ladle moves to the corresponding workstation, the first optical fiber plug is connected, thereby realizing real-time and accurate monitoring of the temperature of the ladle cladding, and further realizing real-time monitoring of the loss of the ladle lining at multiple processes and multiple points, thereby avoiding the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 It is a schematic diagram of monitoring the ladle lining using a laser thickness measurement method in the prior art;

[0038] Figure 2 It is a schematic diagram of monitoring the ladle lining using infrared imaging analysis method in the prior art;

[0039] Figure 3 is a schematic structural diagram of a ladle temperature real-time monitoring device provided in some embodiments of the present application;

[0040] Figure 4 is a schematic structural diagram of a ladle temperature real-time monitoring device provided in some embodiments of the present application;

[0041] Figure 5 is a schematic structural diagram of a ladle temperature real-time monitoring device provided in some embodiments of the present application;

[0042] Figure 6 is a schematic structural diagram of a ladle temperature real-time monitoring device provided in some embodiments of the present application;

[0043] Figure 7 The ladle temperature real-time monitoring device provided in some embodiments of the present application is Figure 3 Sectional view along line AA;

[0044] Figure 8 It is a structural schematic diagram of a real-time monitoring device for ladle temperature provided in some embodiments of the present application. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiment of the utility model more clear, the embodiment of the utility model is further described in detail below in conjunction with the accompanying drawings. Here, the illustrative embodiment of the utility model and its description are used to explain the utility model, but are not used as a limitation of the utility model.

[0046] The ladle is an important container for carrying, transporting, smelting and pouring molten steel during the steelmaking process. It has a shell made of steel plates on the outside, a refractory lining in the middle, and molten steel inside. Its service life and safety have a huge impact on the normal operation of steel enterprises.

[0047] In the steelmaking process, the flushing of molten steel, the chemical reactions produced by refining, and the alternating high and low temperatures will corrode the lining refractory materials of the ladle. If the ladle lining is corroded prematurely or the thermal stress causes the refractory bricks to fall off and is not discovered and repaired in time, it will lead to steel leakage and even casualties. Therefore, monitoring the temperature of the ladle shell is very important in steelmaking production. However, in the steelmaking process, the ladle often needs to be moved between different positions when performing different processes, and the position of the ladle is often complex and changeable, which brings many difficulties to the monitoring of the ladle temperature.

[0048] The ladle needs to go through multiple metallurgical processes during steelmaking production, including tapping from the primary furnace (~5 min), ground transportation of the ladle car (~15 min in total), aerial lifting by crane (~15 min in total), arc heating in the LF refining furnace (~30 min), vacuum treatment in the RH refining furnace (~30 min), pouring by the continuous casting machine (~40 min), hot repair and maintenance of the ladle (~15 min), etc. Among them, the erosion of the refractory materials in the slag line area of ​​the ladle by the smelting slag of the LF refining furnace and the erosion of the refractory materials at the bottom of the ladle by the top slag in the later stage of pouring of the continuous casting machine will greatly increase the possibility of steel leakage in the slag line area and the bottom area of ​​the ladle.

[0049] In the prior art, the temperature of the ladle is mainly monitored by laser thickness measurement and infrared imaging analysis.

[0050] Figure 1 It is a schematic diagram of the laser thickness measurement method used in the prior art to monitor the ladle lining. Figure 1 As shown, in the laser thickness measurement method, a laser detector 102 is used to scan the contour of the inner lining of the ladle 101 by laser to obtain the loss of the refractory material of the inner lining of the ladle 101, so as to avoid the accident of excessive ladle temperature or even steel leakage due to severe loss of refractory material.

[0051] The laser thickness measurement method mainly has the following problems:

[0052] 1. Laser scanning of the refractory profile of the ladle lining can only be performed when there is no molten steel in the ladle. In actual production, it is mainly performed in the hot repair position of the ladle, where the temperature of the ladle is lower and the environment is relatively friendly. However, this technology cannot be used under harsh environmental conditions such as when the ladle is carrying molten steel and performing process operations;

[0053] 2. The turnover cycle of a ladle is often more than 150 minutes, while the hot repair time of the ladle is only about 15 minutes. The contour of the refractory material of the ladle lining obtained by laser scanning at the hot repair position of the ladle can only be used to determine whether the thickness of the refractory material of the ladle lining meets the use requirements, and cannot accurately represent the temperature state of a ladle turnover cycle;

[0054] 3. The laser thickness measurement method mainly scans the ladle lining based on the principle of laser ranging, and cannot distinguish between refractory materials, residual molten steel and slag. In actual production, it is easy for the lining refractory materials to be partially damaged but covered by residual steel and slag, which cannot be effectively distinguished by laser scanning;

[0055] 4. The laser thickness measurement method requires the ladle to be fixed during laser scanning. However, in actual production, the position of each ladle in the ladle hot repair position will be different, which will affect the measurement accuracy.

[0056] 5. Each laser scan takes 2 to 5 minutes, which prolongs the turnover time of the ladle to a certain extent.

[0057] Figure 2 Schematic diagram of the prior art using infrared imaging analysis to monitor the ladle lining, such as Figure 2 As shown, in the infrared imaging analysis method, infrared thermal image analysis is used to monitor the temperature of the ladle cladding 201. Through multiple infrared temperature measuring imagers 202, non-contact infrared temperature measurement technology is used to perform infrared temperature measurement on the ladle cladding 201 to obtain the temperature distribution of the cladding. When the temperature of a certain point of the cladding exceeds the warning value, an alarm is triggered to enable the production operator to perform emergency treatment on the ladle.

[0058] Although infrared imaging analysis can monitor the temperature distribution of molten steel in the ladle, it still has the following disadvantages:

[0059] 1. Infrared thermometers generally need to be fixed in position and can only monitor the temperature of the ladle shell at a specific position, and cannot achieve real-time monitoring during the ladle turnover process;

[0060] 2. When the infrared thermometer measures the temperature of the ladle shell, it is necessary to avoid obstructions in front of the ladle. In actual production, infrared temperature measurement imaging is generally performed when the ladle is hoisted by a crane. At this time, there are the fewest obstructions, but it is also impossible to avoid the crane gantry hook blocking the key trunnion box of the ladle. For processes such as LF refining furnace and RH refining furnace with relatively harsh conditions, it is impossible to set up an infrared thermometer to monitor the temperature of the ladle shell under process processing due to too many obstructions in these processes;

[0061] 3. The measurement results of the infrared thermometer are sensitive to the distance between the instrument and the ladle. However, in the actual production process, the running trajectory of the crane lifting the ladle is not fixed, which affects the accuracy of the measurement results. The ladle shell temperature obtained by the infrared thermometer can only be used for qualitative analysis and cannot be used for accurate quantitative temperature field calculation.

[0062] In order to solve the problems existing in the prior art, the present application provides a device for real-time monitoring of ladle temperature. Figure 3 and Figure 4 is a schematic diagram of the structure of a real-time monitoring device for ladle temperature provided in some embodiments of the present application, such as Figure 3 and Figure 4 As shown, the real-time monitoring device for ladle temperature provided in the present application comprises: a temperature measuring optical fiber 302 and an optical fiber temperature sensing detector 303;

[0063] The temperature measuring optical fiber 302 is a distributed optical fiber, which is laid on the ladle shell 301 in a grid shape and is in direct contact with the ladle shell 301;

[0064] Specifically, the temperature measuring optical fiber 302 is laid in a grid-like manner on the bottom and sidewall of the ladle shell 301. When laying, the temperature measuring optical fiber 302 should pass through as many key positions as possible, such as the ear axis and the bottom weld of the ladle. Before laying, the temperature collection points on the ladle shell 301 can be designed first, and the temperature optical fiber 302 is laid according to the collection points. When the temperature changes, the frequency of the optical signal in the temperature measuring optical fiber 302 will drift, and the wavelength of the light will change, thereby realizing the temperature detection.

[0065] The steel ladle shell is generally made of Q355R, whose creep temperature is about 350°C. The temperature measuring optical fiber 302 used in this application is a high temperature resistant distributed optical fiber, and the maximum measuring temperature can reach about 700°C. Therefore, the temperature optical fiber 302 can be in direct contact with the steel ladle shell 301 to achieve accurate temperature measurement. Distributed optical fiber can achieve temperature measurement at single point, multiple points and continuous areas, and there is no need to set an opening on the steel ladle, which is flexible and convenient to install.

[0066] The optical fiber temperature sensing detector 303 is arranged on the ladle shell 301 or respectively arranged at temperature measuring points at different workstations, and is connected to the temperature measuring optical fiber 302 .

[0067] Specifically, one end of the temperature measuring optical fiber is connected to the optical fiber temperature sensing detector 303, and the other end is fixed on the ladle cladding 301. The optical fiber temperature sensing detector 303 is used as the input light source of the temperature measuring optical fiber 302, and receives the optical signal output by the temperature measuring optical fiber 302, and completes the photoelectric conversion to obtain the temperature signal. Both the temperature measuring optical fiber 302 and the optical fiber temperature sensing detector 303 can be implemented by existing distributed optical fibers and corresponding detectors, and the present application will not repeat their structures and implementation principles.

[0068] In some embodiments, Figure 3 As shown, the optical fiber temperature sensing detector is arranged on the ladle shell. At this time, the ladle temperature real-time monitoring device provided by the present application further includes: a wireless signal sending device 304, a wireless signal receiving device 305 and a battery 306;

[0069] The wireless signal sending device 304 is arranged on the ladle shell 301 and connected to the optical fiber temperature sensing detector 303;

[0070] Specifically, the optical fiber temperature detector 303 and the wireless signal sending device 304 are installed on the ladle and rotate with the ladle during steelmaking production. During steelmaking production, the temperature measuring optical fiber 302 on the ladle shell 301 is directly connected to the optical fiber temperature detector 303, and the temperature signal obtained by the optical fiber temperature detector 303 is connected to the wireless signal sending device 304, and is sent through the wireless signal sending device 304 and received by the wireless signal receiving device 305. The wireless signal sending device 304 and the wireless signal receiving device 305 can communicate wirelessly through WiFi, LET, ZigBee, etc., and this application does not limit the specific method of wireless communication.

[0071] The wireless signal receiving device 305 wirelessly communicates with the wireless signal sending device 304;

[0072] Specifically, after the wireless signal receiving device 305 receives the temperature signal sent by the wireless signal sending device 304, the temperature signal is transmitted to a subsequent processing device for further processing. For example, the temperature signal can be transmitted to a computer for subsequent analysis and modeling; the temperature signal can be transmitted to a smart terminal such as a mobile phone so that the staff can monitor the temperature in real time, or the temperature signal can be transmitted to a storage device for storage. This application does not limit the subsequent processing.

[0073] The real-time monitoring device for ladle temperature provided in the present application realizes real-time wireless transmission of temperature signals through a wireless signal sending device 304, a wireless signal receiving device 305 and a battery 306, thereby realizing temperature measurement while the ladle changes at different process positions.

[0074] In some embodiments, Figure 3 As shown, further, the ladle temperature real-time monitoring device provided by the present application also includes:

[0075] The battery 306 is disposed on the ladle shell 301 and is connected to the optical fiber temperature sensing detector 303 and the wireless signal sending device 304 .

[0076] Specifically, the battery 306 is also arranged on the ladle shell 301 , circulates with the ladle during steelmaking production, and supplies power to the optical fiber temperature sensing detector 303 and the wireless signal sending device 304 arranged on the ladle shell 301 .

[0077] In some embodiments, Figure 3 As shown, further, the ladle temperature real-time monitoring device provided by the present application also includes:

[0078] The first fixed shell 307 is disposed on the ladle shell 301 , and the optical fiber temperature sensing detector 303 , the wireless signal sending device 304 and the battery 306 are disposed in the first fixed shell 307 .

[0079] Specifically, the first fixed housing 307 is made of heat-resistant material, and the optical fiber temperature detector 303, the wireless signal sending device 304 and the battery 306 are arranged in the first fixed housing 307 to be isolated from high temperature, so as to prevent the optical fiber temperature detector 303, the wireless signal sending device 304 and the battery 306 from being damaged in a high temperature environment. The temperature measuring optical fiber 302 connected to the optical fiber temperature detector 303 extends from one end of the first fixed housing 307, and is not tightened, with a certain degree of looseness, so as to prevent the temperature measuring optical fiber 302 from being broken due to the stress generated by the uneven force on the temperature measuring optical fiber 302 during the movement of the ladle.

[0080] In other embodiments, Figure 4 As shown, the optical fiber temperature sensing detector 303 is independent of the circulating ladle and is respectively set at the temperature measuring points of different workstations. At this time, the real-time monitoring device for ladle temperature provided by the present application further includes: a first optical fiber plug 308 and a plurality of second optical fiber plugs 309;

[0081] Among them, the first optical fiber plug 308 is set on the ladle shell 301 and connected to the temperature measuring optical fiber 302; the second optical fiber plug 309 is respectively set at the temperature measuring points of different workstations and connected to the optical fiber temperature sensing detector 303. When the ladle moves to the corresponding workstation, the first optical fiber plug 308 is connected.

[0082] Specifically, during steel production, the first optical fiber plug 308 on the turnover ladle and the second optical fiber plug 309 of each smelting process are connected manually or by a robot, thereby realizing the connection between the optical fiber temperature detector 303 located in each smelting process and the temperature measuring optical fiber 302 on the turnover ladle, and transmitting the optical signal to the optical fiber temperature detector 303. After the optical fiber temperature detector 303 converts the optical signal into a temperature signal, the temperature signal can be transmitted to a computer, an intelligent terminal, a storage device, and other equipment for subsequent processing.

[0083] The processes that the ladle passes through include converter / electric furnace, LF refining furnace, RH refining furnace, continuous casting machine, ladle hot repair station, crane, etc. A set of fiber optic temperature detectors 303 can be set in each smelting process, and each second fiber optic plug 309 can be connected to the corresponding fiber optic temperature detector 303; or only one fiber optic temperature detector 303 can be set, which is connected to each second fiber optic plug 309.

[0084] Due to the setting of the optical fiber plug, there may be a certain deviation between the temperature measuring point of the optical fiber temperature detector 303 on the temperature measuring optical fiber 302 and the actually set temperature measuring point. Before the system is put into formal use, the positioning calibration and adjustment of the virtual temperature collection point of the optical fiber temperature detector 303 and the actual temperature collection point of the ladle cladding 301 can be carried out to improve the accuracy of the actual temperature monitoring data.

[0085] The real-time monitoring device for ladle temperature provided in the present application realizes signal transmission and real-time temperature measurement of the ladle shell in different processes through the first optical fiber plug 308 and multiple second optical fiber plugs 309.

[0086] exist Figure 4 Based on the embodiment, further, Figure 5 As shown, the ladle temperature real-time monitoring device provided by the present application also includes:

[0087] A plurality of brackets 310 are arranged at temperature measuring points of different workstations corresponding to the second optical fiber plugs 309 , and the second optical fiber plug 309 is arranged at one end of the corresponding bracket 310 .

[0088] Specifically, the bracket 310 can be composed of a base 3101, a fixed frame 3102, a rotating frame 3103 and a fixed knob 3104. The base 3101 can be fixed on any plane such as the ground or a wall; one end of the fixed frame 3102 is fixed on the base 3101, and the other end is provided with two tightening plates, and the rotating frame 3103 is provided between the two clamping plates; the fixed knob 3104 passes through the two tightening plates of the fixed frame 3102 and the rotating frame 3103; the second optical fiber plug 309 is fixed to one end of the rotating frame 3103. When the fixed knob 3104 is loosened, the rotating frame 3103 can be rotated at any angle, thereby adjusting the position and height of the second optical fiber plug 309; and the rotating frame 3103 can be fixed by tightening the fixed knob 3104.

[0089] The bracket 310 can also be implemented by any other structure that can adjust the position and height, and the present application does not limit the specific structure of the bracket. By setting the bracket, the first optical fiber plug 308 and the second optical fiber plug 309 can be conveniently connected.

[0090] exist Figure 4 Based on the embodiment, further, Figure 6 As shown, the ladle temperature real-time monitoring device provided by the present application also includes:

[0091] The second fixed shell 311 is disposed on the steel ladle shell 301 . The first optical fiber plug 308 is disposed in the second fixed shell 311 . The socket of the first optical fiber plug 308 is embedded in the second fixed shell 311 .

[0092] Specifically, the socket of the first optical fiber plug 308 is embedded in the second fixed housing 311 and exposed from the side wall of one end of the second fixed housing 311 so as to achieve docking with the second optical fiber plug 309. The temperature measuring optical fiber 302 is connected to the first optical fiber plug 308 and extends from the other end of the second fixed housing 311. It is not tightened and has a certain degree of looseness, so as to prevent the temperature measuring optical fiber 302 from breaking due to the stress caused by the uneven force on the temperature measuring optical fiber 302 during the movement of the ladle. The first optical fiber plug 308 is fixed and protected by setting the second fixed housing 311.

[0093] Figure 7 The ladle temperature real-time monitoring device provided in some embodiments of the present application is Figure 3 and Figure 4 The cross-section diagram of the AA line is as follows: Figure 7 As shown, the ladle temperature real-time monitoring device provided by the present application also includes:

[0094] The optical fiber protection plate 312 is fixed on the steel ladle shell 301 and is arranged on the outer side of the temperature measuring optical fiber 302 .

[0095] Specifically, in order to prevent the hot metal or slag in the steelmaking process from directly contacting the temperature measuring optical fiber 302 and causing damage to the temperature measuring optical fiber 302, an optical fiber protection plate 312 needs to be set outside the temperature measuring optical fiber 302 for protection. The optical fiber protection plate 312 is made of heat-resistant steel plate.

[0096] In some embodiments, the optical fiber protection plate 312 has a certain elasticity to clamp the temperature measuring optical fiber 302 , thereby fixing the temperature measuring optical fiber 302 .

[0097] In other embodiments, Figure 8 As shown, the ladle temperature real-time monitoring device provided by the present application also includes:

[0098] The optical fiber fixing block 313 is used to fix the temperature measuring optical fiber 302. The optical fiber fixing block 313 has an arch structure in the middle, and both sides are fixed on the steel ladle shell 301 respectively. The temperature measuring optical fiber 303 is arranged inside the arch structure of the optical fiber fixing block 313.

[0099] On the basis of the above embodiments, further, Figure 3 and Figure 4 As shown, the real-time monitoring device for ladle temperature provided in the present application also includes: a temperature monitoring module 314, which is communicatively connected with the optical fiber temperature sensing detector 303, receives the temperature signal sent by the optical fiber temperature sensing detector 303, and monitors the temperature.

[0100] Specifically, the temperature monitoring module 314 can be directly connected to the optical fiber temperature sensing detector 303 through a communication connector, a communication line, etc., or can be wirelessly connected to the optical fiber temperature sensing detector 303 through a wireless signal sending device 304 and a wireless signal receiving device 305. The temperature monitoring module 314 compares the temperature of each position with a preset temperature threshold, and when the temperature exceeds the preset temperature threshold, an alarm signal is issued to notify the staff in time. The temperature monitoring module 314 can be, for example, a comparator that compares the temperature signal with a preset value in a memory, and when the temperature is greater than the preset value, a high level is issued.

[0101] In one embodiment, further, Figure 3 and Figure 4 As shown, the real-time monitoring device for ladle temperature provided in the present application also includes: an alarm 315, which is connected to the temperature monitoring module 314. When a high-level signal sent by the temperature monitoring module 314 is received, the alarm 315 sends an alarm signal.

[0102] In one embodiment, a memory (not shown) may also be provided and connected to the optical fiber temperature detector 303 to store the temperature data collected by the optical fiber temperature detector 303 .

[0103] In addition, the temperature data collected by the optical fiber temperature detector 303 can also be uploaded to the cloud platform or directly sent to the staff terminal for detection and processing. This application does not limit the subsequent processing method of the temperature signal.

[0104] Figure 3 In the method, the optical fiber temperature detector 303 rotates with the ladle and is powered by a battery. Due to the high temperature and dusty environment of each process, the optical fiber temperature detector 303 and the power supply battery also need to be equipped with a protection system. The signal transmission between the optical fiber temperature detector 303 and the temperature monitoring module 314 is wireless transmission, and there is a certain probability of signal and data loss. Figure 3 In the method, under normal circumstances, the ladle wall temperature monitoring is continuous. Since the optical fiber temperature detector 303 rotates with the ladle, each rotating ladle needs to be provided with an optical fiber temperature detector 303, and the number of optical fiber temperature detectors 303 depends on the number of rotating ladles.

[0105] Figure 4In the method, the fiber optic temperature detector 303 is set offline and does not rotate with the ladle. It adopts a conventional power supply method and has a more friendly working environment. The signal transmission between the fiber optic temperature detector 303 and the temperature monitoring module 314 is wired transmission, which can improve the accuracy of the signal. The temperature measuring optical fiber 302 on the ladle shell 301 and the fiber optic temperature detector 303 use a fiber optic plug. When the ladle enters and leaves a certain smelting process, it needs to be connected and disconnected manually or by a robot, which adds a certain auxiliary operation burden and loses the ladle wall temperature monitoring during the disconnection of the connector. Since the fiber optic temperature detector 303 does not rotate with the ladle, a fiber optic temperature detector 303 needs to be set for each smelting process, and the number of fiber optic temperature detectors 303 depends on the number of smelting processes.

[0106] A suitable method can be selected according to actual conditions to achieve the connection between the optical fiber temperature sensing detector 303 and the warm optical fiber 302.

[0107] The real-time ladle temperature monitoring device provided in the present application realizes real-time and accurate monitoring of the ladle shell temperature through temperature measuring optical fibers laid in a grid on the ladle shell and in direct contact with the ladle shell and optical fiber temperature sensing detectors connected to the temperature measuring optical fibers, thereby realizing real-time monitoring and positioning of the ladle lining loss and avoiding the occurrence of safety accidents.

[0108] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0109] The descriptions with reference to the terms "one embodiment", "a specific embodiment", "some embodiments", "for example", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. The order of steps involved in each embodiment is used to schematically illustrate the implementation of the utility model, and the order of steps therein is not limited and can be appropriately adjusted as needed.

[0110] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0111] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific embodiment of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A real-time monitoring device for ladle temperature, characterized in that: include: A temperature measuring optical fiber, which is a distributed optical fiber, is laid on the steel ladle cladding in a grid-like manner and is in direct contact with the steel ladle cladding; At least one optical fiber temperature sensing detector, arranged on the steel ladle shell or respectively arranged at temperature measuring points at different workstations, and connected to the temperature measuring optical fiber; When the optical fiber temperature sensing detector is arranged on the steel ladle shell, it also includes: A wireless signal sending device, arranged on the ladle shell and connected to the optical fiber temperature sensing detector; A wireless signal receiving device, communicating wirelessly with the wireless signal sending device; A battery, arranged on the ladle shell and connected to the optical fiber temperature sensing detector and the wireless signal sending device; When the optical fiber temperature sensing detectors are respectively arranged at temperature measuring points of different workstations, the method further comprises: A first optical fiber plug is arranged on the steel ladle shell and connected to the temperature measuring optical fiber; A plurality of second optical fiber plugs are respectively arranged at temperature measuring points of different workstations and connected to optical fiber temperature sensing detectors of corresponding workstations. When the ladle moves to the corresponding workstation, the first optical fiber plug is connected; A plurality of brackets are arranged at temperature measuring points of different stations corresponding to the second optical fiber plug, and the second optical fiber plug is arranged at one end of the corresponding bracket; The second fixed shell is arranged on the steel ladle shell, the first optical fiber plug is arranged in the second fixed shell, and the socket of the first optical fiber plug is embedded in the second fixed shell.

2. The ladle temperature real-time monitoring device according to claim 1, characterized in that: Also includes: The first fixed shell is arranged on the steel ladle shell, and the optical fiber temperature sensing detector, the wireless signal sending device and the battery are arranged in the first fixed shell.

3. The real-time monitoring device for ladle temperature according to claim 1, characterized in that: Also includes: The optical fiber protection plate is fixed on the steel ladle shell and is arranged on the outer side of the temperature measuring optical fiber.

4. The real-time monitoring device for ladle temperature according to claim 1, characterized in that: Also includes: The optical fiber fixing block has an arched structure in the middle and two sides thereof are respectively fixed on the steel ladle shell; The temperature measuring optical fiber is arranged inside the arch structure.

5. The ladle temperature real-time monitoring device according to claim 1, characterized in that: Also includes: The temperature monitoring module is connected to the optical fiber temperature sensing detector for communication, receives the temperature signal sent by the optical fiber temperature sensing detector, and monitors the temperature.

6. The ladle temperature real-time monitoring device according to claim 5, characterized in that: Also includes: An alarm is connected to the temperature monitoring module and sends out an alarm signal according to the control of the temperature monitoring module.

7. The real-time monitoring device for ladle temperature according to claim 1, characterized in that: Also includes: The storage device is connected to the optical fiber temperature sensing detector for storing the temperature signal collected by the optical fiber temperature sensing detector.

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