WO2024105979A1 - 異常検知装置、溶滓の搬送装置及び、溶滓の搬送方法 - Google Patents

異常検知装置、溶滓の搬送装置及び、溶滓の搬送方法 Download PDF

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Publication number
WO2024105979A1
WO2024105979A1 PCT/JP2023/032386 JP2023032386W WO2024105979A1 WO 2024105979 A1 WO2024105979 A1 WO 2024105979A1 JP 2023032386 W JP2023032386 W JP 2023032386W WO 2024105979 A1 WO2024105979 A1 WO 2024105979A1
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Prior art keywords
sensors
flow path
switching unit
unit
switching
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PCT/JP2023/032386
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English (en)
French (fr)
Japanese (ja)
Inventor
育也 襟立
紀志 藤井
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Ｊｆｅスチール株式会社
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Priority to JP2023579137A priority Critical patent/JP7697541B2/ja
Publication of WO2024105979A1 publication Critical patent/WO2024105979A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
    • B65G47/82—Rotary or reciprocating members for direct action on articles or materials, e.g. pushers, rakes, shovels

Definitions

  • the present invention relates to an abnormality detection device that detects abnormalities when transporting slag discharged from a furnace, a slag transport device, and a slag transport method.
  • Patent Document 1 which switches the flow of blast furnace slag at any desired ratio.
  • a switching unit is provided to switch the connection of the branch of the flow path, and the molten slag is discharged to the desired branch by switching the connection of the switching unit.
  • the switching unit uses a flow path that connects a flow path provided on the blast furnace side with a flow path having a branch.
  • connection of the switching unit is changed by moving the switching unit to the branch that is the target of the changeover.
  • the switching unit is stopped by installing a sensor such as a limit switch at the stopping position where the switching unit is to be stopped, and stopping the unit according to the operation of the sensor.
  • Sensor failures include when the sensor signal is no longer received.
  • Another example of a sensor failure is when the sensor becomes stuck and an input signal continues to be received. As such, there are many different causes of sensor failure, which can lead to problems such as the above.
  • the present invention has been made in consideration of the above problems, and aims to provide an abnormality detection device that can properly detect abnormalities in a slag transport device.
  • the present invention also aims to provide a slag transport device and transport method that can properly operate a switching unit that switches the connection of the flow paths of the transport device.
  • the present invention has the following features:
  • An abnormality detection device for detecting an abnormality in a slag transport device, the abnormality detection device comprising: a first flow path connected to a furnace; a second flow path connected to the first flow path and having a plurality of branches; a switching unit for switching a connection between the first flow path and the plurality of branches of the second flow path; and an actuator for moving the switching unit from one end to the other end in a width direction of the second flow path, a movable portion that moves in one direction in response to an operation of the actuator and has a tip surface formed at a tip in the one direction; a sensor group including a plurality of first sensors that detect that the connection of the switching unit is connected to one branch arranged on one end side of the second flow path in the width direction, and a plurality of second sensors that detect that the connection of the switching unit is connected to another branch arranged on the other end side of the second flow path in the width direction, a plurality of the first sensors are arranged along a width direction of the tip surface of the movable
  • the first sensors are arranged along the one direction relative to the second sensors;
  • the second flow path has one or more branches disposed between the first branch and the second branch in a width direction thereof,
  • the anomaly detection device according to [1] or [2], wherein the sensor group has a plurality of third sensors that detect connection to the one or more branches.
  • a slag transport device comprising: a first flow path connected to a furnace; a second flow path connected to the first flow path and having a plurality of branches; a switching unit that switches a connection between the first flow path and the plurality of branches of the second flow path; and an actuator that moves the switching unit from one end to the other end in a width direction of the second flow path, a sensor group including a plurality of first sensors that detect that the connection of the switching unit is connected to one branch arranged on one end side of the second flow path in the width direction, and a plurality of second sensors that detect that the connection of the switching unit is connected to another branch arranged on the other end side of the second flow path in the width direction; a detection signal acquiring unit that acquires detection signals from each of the first sensors and each of the second sensors; an operation information acquisition unit that acquires switching operation information of the switching unit; an operation state information generating unit that generates operation state information indicating an operation state of the switching unit based on the switching operation information and the detection signal; and an operation control
  • the operation state information generation unit generates the operation state information indicating that the operation state of the switching unit is abnormal when, among the detection signals of the plurality of first sensors, there is no change in the detection state of each of the plurality of first sensors, or when the detection signal of at least one of the plurality of first sensors is different from the detection signal of the other first sensors;
  • the operation control unit controls the operation of the actuator based on the operation status information.
  • the operation state information generation unit generates the operation state information indicating that the operation state of the switching unit is abnormal when there is no change in the detection state of each of the plurality of second sensors or when the detection signal of at least one of the plurality of second sensors is different from the detection signal of the other second sensors;
  • a method for transporting slag comprising: a first flow path connected to a furnace; a second flow path connected to the first flow path and having a plurality of branches; a switching unit for switching a connection between the first flow path and the plurality of branches of the second flow path; and an actuator for moving the switching unit from one end to the other end in a width direction of the second flow path, a detection signal acquiring step of acquiring detection signals from a plurality of first sensors that detect that the connection of the switching unit is connected to one branch arranged on one end side of the second flow path in the width direction and a plurality of second sensors that detect that the connection of the switching unit is connected to another branch arranged on the other end side of the second flow path in the width direction; an operation information acquisition step of acquiring switching operation information of the switching unit; an operation status information generating step of generating operation status information indicating an operation status of the switching unit based on the switching operation information and the detection signal; and an operation control step of controlling the operation of the actuator based on the operation status information
  • the operation state information generating step when there is no change in the detection state of each of the plurality of first sensors among the detection signals of each of the plurality of first sensors, or when the detection signal of at least one of the plurality of first sensors is different from the detection signal of the other first sensors, the operation state information indicating that the operation state of the switching unit is abnormal is generated;
  • the operation state information generating step when there is no change in the detection state of each of the plurality of second sensors or when the detection signal of at least one of the plurality of second sensors is different from the detection signal of the other second sensors, the operation state information indicating that the operation state of the switching unit is abnormal is generated;
  • the method for transporting slag according to [10] or [11] wherein in the operation control step, the actuator is returned to an operation start position based on the operation status information.
  • the anomaly detection device of the present invention has a plurality of first sensors arranged along the width direction of the tip surface of the movable part, and a plurality of second sensors arranged at different positions from each other along one direction.
  • a plurality of first sensors By arranging the plurality of first sensors along such a direction, it becomes possible to simultaneously detect the same detection target with the plurality of first sensors. This makes it possible to determine whether or not a malfunction has occurred in the plurality of first sensors.
  • Furthermore, by arranging the plurality of second sensors at different positions from each other along one direction even if a malfunction has occurred in one second sensor, it becomes possible for the detection target to be detected by the other second sensor. This allows the anomaly detection device to properly detect an abnormality in the slag transport device.
  • operation status information indicating the operation status of the switching unit is generated based on the switching operation information of the switching unit and the detection signals of the first sensor and the second sensor.
  • FIG. 2 is an explanatory diagram showing the configuration of a slag transport device.
  • FIG. 2 is an explanatory diagram showing a configuration of an anomaly detection device.
  • FIG. 4 is an explanatory diagram showing an operation mode of the first sensor.
  • FIG. 11 is an explanatory diagram showing an operation mode of the second sensor.
  • FIG. 2 is a block diagram showing functional blocks of a slag transport device.
  • FIG. 4 is a flow diagram showing a transport process by a slag transport device.
  • FIG. 11 is a flow chart showing another transport process by the slag transport device.
  • Figure 1 shows the configuration of a slag transport device 100.
  • the slag transport device 100 has a first flow path 20 connected to a blast furnace 10 as a furnace, a second flow path 30 connected to the first flow path 20 and having multiple branches 31, 32, and a switching unit 40 that switches the connection between the first flow path 20 and the multiple branches 31, 32 of the second flow path 30.
  • the furnace is not limited to the blast furnace 10, and may be a furnace other than a blast furnace, such as a furnace that separates slag at a cast bed.
  • the first flow passage 20 is formed with an incline so that it becomes lower from the base end connected to the blast furnace 10 toward the tip end.
  • the slag discharged into the first flow passage 20 flows from the base end toward the tip end.
  • the switching unit 40 is connected to the first flow path 20 on the upstream side, and to one of the branches 31, 32 of the second flow path 30 on the downstream side.
  • the switching unit 40 is movable from the solid line to the dotted line position in the figure so that it can be switched to connect to one of the branches 31, 32.
  • the switching unit 40 supplies the slag supplied from the first flow path 20 to one of the branches 31, 32.
  • the second flow path 30 is a flow path having multiple branches 31, 32.
  • the branch 31 is arranged at one end side of the second flow path in the width direction and is connected to a first destination.
  • the branch 32 is arranged at the other end side of the second flow path in the width direction and is connected to a second destination.
  • the second flow path 30 may be configured so that one or more branches are provided between the branches 31, 32.
  • the first destination and the second destination may be set, for example, as different transport locations.
  • Each of the branches 31, 32 is formed with an incline so that it becomes lower from the base end connected to the switching unit 40 toward the tip end. The slag discharged into the branches 31, 32 flows from the base end toward the tip end.
  • the slag discharged from the blast furnace 10 flows from the first flow path 20 toward the switching section 40.
  • the slag in the switching section 40 is supplied to the branches 31, 32 of the connected second flow path.
  • the slag transport device 100 has an abnormality detection device 80 that detects abnormalities in the transport device 100.
  • the abnormality detection device 80 has an actuator 50 that moves the switching unit 40 from one end of the second flow path 30 in the width direction to the other end, and a group of sensors 8 that detect the operation of the actuator 50.
  • the actuator 50 is configured to have a cylinder 51 formed in a hollow cylindrical shape and a piston 52 that slides inside the cylinder 51.
  • the cylinder 51 contains a fluid, such as a gas.
  • Two types of solenoid valves (not shown) are connected to the cylinder 51, and the internal pressure inside the cylinder 51 can be varied by magnetizing and demagnetizing these solenoid valves.
  • the piston 52 has a rod-shaped connecting member, one end of which is connected to the switching unit 40. In this manner, when the piston 52 slides inside the cylinder 51, the connection position of the switching unit 40 is switched.
  • the switching unit 40 is connected to the actuator 50 so as to be movable to a switching position P located outside the branch 32, in addition to the branches 31 and 32.
  • the switching position P is not particularly limited, but may be, for example, a position where maintenance of the switching unit 40 is performed.
  • the control device 60 controls the operation of the entire slag transport device 100, including the actuator 50.
  • the control device 60 switches the connection position of the switching unit 40 by operating the solenoid valve connected to the cylinder 51.
  • the control device 60 is electrically connected to the alarm unit 70.
  • the notification unit 70 is a component that notifies the user of the operating status of the actuator 50.
  • the notification unit 70 receives a signal from the control device 60 and notifies the user by outputting visual information and audio information.
  • an LCD display, a speaker, etc. can be used as the notification unit 70.
  • FIG. 2 shows the configuration of an abnormality detection device that detects abnormalities in the slag transport device 100.
  • the abnormality detection device 80 has a plate-shaped part 81 as a movable part that moves in one direction D1 in response to the operation of the actuator 50.
  • the plate-shaped portion 81 is formed in a plate shape.
  • the plate-shaped portion 81 is formed in an L-shape to avoid interference with the cylinder 51 when the piston 52 slides to the base end of the cylinder 51.
  • the plate-shaped portion 81 has a support portion formed along a direction perpendicular to the axis of the piston of the actuator 50, and a main body portion formed in a plate shape along one direction D1 from the support portion.
  • the abnormality detection device 80 has a plurality of first sensors 82, 83 that detect when the connection of the switching unit 40 is connected to the branch 31, and a plurality of second sensors 84, 85 that detect when the connection of the switching unit 40 is connected to the branch 32.
  • the abnormality detection device 80 also has a switching position sensor 86 that detects when the connection of the switching unit 40 is connected to the switching position P.
  • the first sensors 82, 83, the second sensors 84, 85, and the switching position sensor 86 are not particularly limited, but in this embodiment, limit switches can be used. Therefore, when the plate-shaped portion 81 advances toward the right side of FIG. 2, the protrusions of the first sensors 82, 83, the second sensors 84, 85, and the switching position sensor 86 come into contact with the plate-shaped portion 81.
  • the first sensors 82, 83 are provided at a position reached by the plate-shaped portion 81, which corresponds to the position where the connection of the switching unit 40 is connected to the branch 31. Therefore, the first sensors 82, 83 detect that the connection of the switching unit 40 is connected to the branch 31 by contacting the plate-shaped portion 81. Note that, although two first sensors 82, 83 are provided in this embodiment, three or more first sensors may be provided depending on the embodiment.
  • the second sensors 84, 85 are provided at the reachable position of the plate-shaped portion 81, which corresponds to the position where the connection of the switching portion 40 is connected to the branch 32. Therefore, the second sensors 84, 85 detect that the connection of the switching portion 40 is connected to the branch 32 by contacting the plate-shaped portion 81.
  • two second sensors 84, 85 are provided, but three or more may be provided depending on the embodiment.
  • the switching position sensor 86 is provided at a position reached by the plate-shaped portion 81, which corresponds to the position where the connection of the switching portion 40 is connected to the switching position P. Therefore, the switching position sensor 86 detects that the connection of the switching portion 40 is connected to the switching position P by contacting the plate-shaped portion 81.
  • Figure 3 shows how the first sensors 82, 83 come into contact with the plate-shaped portion 81.
  • the plate-shaped portion 81 has a tip surface 81a formed on the tip side in one direction D1.
  • the movable portion is not limited to the plate-shaped portion 81 formed in a plate shape, but may have any shape that has a tip surface 81a that can come into contact with each of the sensors 82 to 86 of the sensor group 8.
  • the movable portion may be, for example, rod-shaped with one end branching into multiple tip surfaces 81a, such as a U-shape or W-shape.
  • the first sensors 82, 83 are arranged along the width direction D2 of the tip surface 81a of the plate-shaped portion 81. In other words, the first sensors 82, 83 are arranged along the surface 81b of the plate-shaped portion 81 and along the direction D2 perpendicular to the first direction D1.
  • the first sensors 82, 83 have a main body 82a, 83a formed in a rectangular parallelepiped shape, and protrusions 82b, 83b that are supported on one end of the main body 82a, 83a and are formed in a rod shape so as to be rotatable around the axis. Therefore, when the protrusions 82b, 83b of the first sensors 82, 83 come into contact with the plate-shaped portion 81, the protrusions 82b, 83b tilt around the axis.
  • the first sensors 82, 83 detect that the plate-shaped portion 81 has reached the position where the first sensors 82, 83 are arranged. Furthermore, by arranging the first sensors 82, 83 in this manner, it is possible to simultaneously detect the plate-shaped portion 81, which is the same detection target. When the plate-shaped portion 81 is detected by the first sensors 82, 83, the operation of the actuator 50 stops. In this way, by making the first sensors 82, 83 redundant, the feasibility of the switching operation of the switching unit 40 can be improved.
  • the first sensors 82, 83 are preferably provided at the ends of the range in which the piston 52 of the actuator 50 moves, i.e., at positions corresponding to the vicinity of the limit position of the movable range of the piston 52. By providing the first sensors 82, 83 at such positions, even if one of the first sensors 82, 83 breaks down, as long as the other is normal, it is possible to reliably stop the switching unit 40.
  • FIG. 4 shows the manner in which the second sensors 84, 85 come into contact with the plate-shaped portion 81.
  • the second sensors 84, 85 are arranged at different positions from each other along one direction D1.
  • the second sensor 84 is provided on the proximal side as viewed from the first sensors 82, 83.
  • the second sensor 84 will also be referred to as the first second sensor 84.
  • the second sensor 85 is provided on the distal side as viewed from the first sensors 82, 83.
  • the second sensor 85 will also be referred to as the second second sensor.
  • the second sensors 84, 85 have a main body 84a, 85a formed in a rectangular parallelepiped shape, and protrusions 84b, 85b that are supported on one end of the main body 84a, 85a and are formed in a rod shape protruding from the main body 84a, 85a so as to be rotatable around the axis. Therefore, when the protrusions 84b, 85b of the second sensors 84, 85 come into contact with the plate-shaped portion 81, the protrusions 84b, 85b tilt around the axis. This allows the second sensors 84, 85 to detect that the plate-shaped portion 81 has reached the arrangement position of the second sensors 84, 85.
  • the second sensor 85 is preferably provided near the end located on the branch 32 side, which is the other end in the width direction of the second flow path 30, i.e., near the position corresponding to the limit position of the range of motion of the piston 52.
  • the first sensor 82, the second sensors 84 and 85, and the switching position sensor 86 are not limited to limit switches, and may be, for example, a pair of a light-emitting element and a light-receiving element, and may detect the plate-shaped portion 81 according to the light-receiving state of the light-receiving element.
  • the first sensor 82, the second sensors 84 and 85, and the switching position sensor 86 may detect the plate-shaped portion 81 based on a change in the amount of light received when the front surface of the light receiving element is blocked by the plate-shaped portion 81. Also, they may detect based on a change in the timing at which the light receiving element receives the emitted light when pulsed light is emitted.
  • the plate-shaped portion 81, the first sensor 82, the second sensors 84 and 85, and the switching position sensor 86 are provided in an area that is less affected by heat.
  • the plate-shaped portion 81 and the sensors 82 to 86 are provided in a position that is separated from the slag transport device 100 by a partition member (not shown) or the like. It is preferable that the partition member be made of a material having thermal insulation properties.
  • Figure 5 shows the functional blocks of the slag transport device.
  • the slag transport device 100 has a sensor group 8 including the first sensors 82, 83 to the switching position sensor 86, an actuator 50, and an alarm unit 70, all of which are electrically connected to a control device 60.
  • the control device 60 includes an input unit 61 which is an input interface, a memory unit 62 which stores various information input from the input unit 61, an output unit 63 which is an output interface, and a control unit 64 which controls the control device 60, all of which are electrically connected to each other via a bus 65.
  • the control unit 64 is a computer consisting of a CPU, ROM, and RAM. It has a detection signal acquisition unit 64a that acquires detection signals from each of the first sensors 82, 83 and each of the multiple second sensors 84, 85.
  • the control unit 64 has an operation information acquisition unit 64b that acquires switching operation information of the switching unit 40.
  • the control unit 64 has an operation state information generation unit 64c that generates operation state information indicating the operation state of the switching unit 40 based on the switching operation information and the detection signal.
  • the control unit 64 has an operation control unit 64d that controls the operation of the actuator 50 based on the operation state information.
  • the detection signal acquisition unit 64a, operation information acquisition unit 64b, operation state information generation unit 64c, and operation control unit 64d are realized by reading data stored in the ROM and programs, which are computer software, and executing arithmetic processing according to the programs based on the data.
  • the detection signal acquisition unit 64a acquires the detection signals of the sensors 82 to 86 of the sensor group 8 stored in the memory unit 62.
  • the operation information acquisition unit 64b acquires the operation information of the actuator 50 stored in the memory unit 62 as switching operation information of the switching unit 40.
  • the operation status information generating unit 64c generates normal operation status information indicating that the operation status of the switching operation of the switching unit 40 is normal, and abnormal operation status information indicating that the operation status of the switching operation of the switching unit 40 is abnormal, based on the switching operation information and the detection signal.
  • Normal operating state information is generated, for example, when each of the first sensors 82, 83 experiences a similar change in the type of detection signal, i.e., a similar change in detection state. Specifically, when the switching unit 40 moves from branch 31 to branch 32, each of the first sensors 82, 83 begins to come into contact with the plate-shaped portion 81 when the switching unit 40 moves a predetermined distance after starting to move. As a result, the detection signals of each of the first sensors 82, 83 change from ON to OFF. Therefore, it is considered that each of the first sensors 82, 83 is operating normally. In such a case, normal operating state information is generated.
  • Abnormal operating state information is generated, for example, when there is no change in the type of detection signal of each of the first sensors 82, 83, i.e., when there is no change in the detection state.
  • each of the first sensors 82, 83 starts to come into contact with the plate-shaped portion 81 when the switching unit 40 moves a predetermined distance after starting to move. Therefore, when each of the first sensors 82, 83 operates normally, the detection signal changes from ON to OFF. Therefore, when there is no change in the detection state even after a time equivalent to a movement of a predetermined distance has elapsed, it is considered that each of the first sensors 82, 83 is faulty. In such a case, abnormal operating state information is generated.
  • abnormal operating state information is generated, for example, when at least one of the first sensors 82, 83 has a detection signal that is different from the other first sensors 82, 83.
  • the first sensors 82, 83 are considered to be functioning normally when there is a similar fluctuation in the detection state, and therefore abnormal operating state information is generated when the detection states do not match.
  • the abnormal operating state information is generated, for example, when there is no change in the type of detection signal of each of the second sensors 84, 85, i.e., when there is no change in the detection state.
  • the switching unit 40 moves from branch 31 to branch 32
  • the first second sensor 84 comes into contact with the plate-shaped portion 81 when the switching unit 40 moves a predetermined distance after starting to move. Therefore, if the first second sensor 84 operates normally, the detection signal changes from OFF to ON. Therefore, if there is no change in the detection state even after a time equivalent to moving a predetermined distance has elapsed, it is considered that the first second sensor 84 is broken. In such a case, the abnormal operating state information is generated.
  • the plate-shaped portion 81 continues to move in one direction.
  • the second second sensor 85 comes into contact with the plate-shaped portion 81 when it has moved a predetermined distance since the switching portion 40 started to move. Therefore, if the second second sensor 85 is operating normally, the detection signal changes from OFF to ON. Therefore, if there is no change in the detection state even after a time equivalent to a movement of a predetermined distance has elapsed, it is considered that the second second sensor 85 is broken. In such a case, abnormal operating state information is generated.
  • abnormal operating state information is generated, for example, when the detection signal of at least one of the second sensors 84, 85 is different from that of the other second sensors 84, 85.
  • the second second sensor 85 is activated when the plate-shaped portion 81 moves beyond the installation position of the first second sensor 84. Therefore, when the detection states do not match, such as when the first second sensor 84 does not detect and the second second sensor 85 detects, abnormal operating state information is generated.
  • the operation control unit 64d controls the operation of the actuator 50 based on the normal operation state information and the abnormal operation state information. For example, when the abnormal operation state information is generated such that the second sensors 84, 85 are in different detection states, the operation control unit 64d controls the operation of the actuator 50 to return the switching unit 40 to the position of the branch 31. By performing such control, the operation control unit 64d stops the actuator 50 at the end position of the movable range of the cylinder 51. Therefore, the switching unit 40 is reliably stopped at the connection position of the branch 31, and the switching operation of the switching unit 40 can be safely performed.
  • FIG. 6 shows process flow R1 of the slag transport method using the slag transport device 100.
  • Process flow R1 shown in Figure 6 shows the case where the switching unit 40 moves from branch 31 to branch 32. Note that process flow R1 of the slag transport method is started, for example, by the operation of the actuator 50.
  • the detection signal acquisition unit 64a acquires detection signals from the first sensors 82, 83 and the second sensors 84, 85 from the memory unit 62 (step S101).
  • the detection signal acquisition unit 64a may thereafter acquire detection signals successively until this process is completed.
  • the operation information acquisition unit 64b reads from the storage unit 62 and acquires the switching operation information of the switching unit 40 (step S102).
  • the operation information acquisition unit 64b may successively acquire switching operation information thereafter until this process ends. Note that either the detection signal acquisition step of step S101 or the operation information acquisition step of step S102 may be executed first, or they may be executed simultaneously.
  • the operation status information generating unit 64c determines whether both first sensors 82, 83 are OFF based on the detection signal (step S103).
  • the determination in step S103 may be made when the switching unit 40 has moved the distance required for the first sensors 82, 83 to switch from ON to OFF.
  • the operation status information generating unit 64c may determine in advance the movement time of the switching unit 40 for that distance, and make a determination after that movement time has elapsed since the switching unit 40 started to move.
  • the movement time of the switching unit 40 may be stored in advance in the memory unit 62.
  • step S104 determines whether the first second sensor 84 is ON (step S104).
  • the determination in step S104 may be made when the switching unit 40 moves from the first sensors 82, 83 to the first second sensor 84.
  • the operation status information generating unit 64c may determine in advance the movement time of the switching unit 40 for that distance, and make a determination after the movement time has elapsed since the switching unit 40 started to move.
  • the movement time of the switching unit 40 may be stored in advance in the memory unit 62.
  • step S104 If it is determined in step S104 that the first second sensor 84 is ON (step S104: Yes), the operation status information generating unit 64c generates normal operation status information indicating that the operation status of the switching unit 40 is normal (step S105). In other words, the operation status information generating process is executed.
  • the operation control unit 64d stops the operation of the actuator 50 based on the normal operation status information generated in step S104 (step S106), and ends the process. That is, the operation control process is executed.
  • the control device 60 may notify the user by causing the notification unit 70 to output a sound indicating that the operation has been performed normally.
  • step S104 determines whether the second second sensor 85 is ON, and then generates abnormal operation status information indicating that the operation status of the switching unit 40 is abnormal (step S107). That is, the operation status information generating process is executed.
  • the determination of whether the second second sensor 85 is ON may be performed when the switching unit 40 moves from the first sensor 82, 83 to the second second sensor 85. The process may be performed using the movement time according to the description of step S104.
  • the operation control unit 64d stops the operation of the switching unit 40, operates the actuator 50 to return to the position of the branch 31, i.e., the operation start position (step S108), and ends the process. In other words, the operation control process is executed. Note that when the process of step S108 is performed, the control device 60 may cause the notification unit 70 to output, for example, a sound indicating that the operation of the switching unit 40 is abnormal.
  • step S103 If it is determined in step S103 that neither of the first sensors 82, 83 is OFF (step S103: No), the operation status information generating unit 64c determines whether either one of the first sensors 82, 83 is OFF based on the detection signal (step S109).
  • step S109 If any one of the first sensors 82, 83 is OFF (step S109: Yes), the operation status information generating unit 64c generates abnormal operation status information indicating that the operation status of the switching unit 40 is abnormal based on the abnormality of any one of the first sensors 82, 83 (step S110). In other words, the operation status information generating process is executed.
  • the operation control unit 64d stops the operation of the switching unit 40, operates the actuator 50 to return to the position of the branch 31, i.e., the operation start position (step S108), and ends the process. In other words, the operation control process is executed. Note that when the process of step S108 is performed, the control device 60 may cause the notification unit 70 to output, for example, a sound indicating that the operation of the switching unit 40 is abnormal.
  • step S109 If neither of the first sensors 82, 83 is OFF (step S109: No), the operation status information generating unit 64c generates abnormal operation status information indicating that the operation status of the switching unit 40 is abnormal based on the abnormality of both the first sensors 82, 83 (step S111). That is, the operation status information generating process is executed.
  • the operation control unit 64d stops the operation of the switching unit 40 (step S112) based on the abnormal operation state information generated in step S111, and ends the process. That is, the operation control process is executed.
  • the control device 60 may cause the notification unit 70 to output, for example, a sound indicating that the operation of the switching unit 40 is abnormal.
  • FIG. 7 shows process flow R2 of the slag transport method using the slag transport device 100.
  • Process flow R2 shown in Figure 7 shows the case where the switching unit 40 moves from branch 32 to branch 31. Note that process flow R2 of the slag transport method is started, for example, by the operation of the actuator 50.
  • the detection signal acquisition unit 64a acquires detection signals from the first sensors 82, 83 and the second sensors 84, 85 from the memory unit 62 (step S201).
  • the detection signal acquisition unit 64a may thereafter acquire detection signals successively until this process is completed.
  • the operation information acquisition unit 64b reads from the storage unit 62 and acquires the switching operation information of the switching unit 40 (step S202).
  • the operation information acquisition unit 64b may successively acquire switching operation information thereafter until this process ends. Note that either the detection signal acquisition step of step S201 or the operation information acquisition step of step S202 may be executed first, or they may be executed simultaneously.
  • the operation status information generating unit 64c determines whether the first second sensor 84 is OFF based on the detection signal (step S203).
  • the determination in step S203 may be made when the switching unit 40 has moved the distance required for the first second sensor 84 to switch from ON to OFF after the switching unit 40 starts moving.
  • the operation status information generating unit 64c may determine in advance the time it takes for the switching unit 40 to move that distance, and make a determination after that moving time has elapsed.
  • the moving time of the switching unit 40 may be stored in advance in the memory unit 62.
  • step S203: Yes the operation status information generating unit 64c proceeds to the next step S204. If the first second sensor 84 is not OFF (step S203: No), the operation status information generating unit 64c generates abnormal operation status information indicating that the operation status of the switching unit 40 is abnormal based on the abnormality of the first second sensor 84 (step S205), and proceeds to the next step S204. That is, the operation status information generating process is executed in step S205. Note that when the control device 60 performs the process of step S205, it is preferable that the notification unit 70 outputs, for example, a sound indicating that the operation of the switching unit 40 is abnormal.
  • the operation status information generating unit 64c determines whether both first sensors 82, 83 are ON based on the detection signal (step S204). The determination in step S204 may be made when the switching unit 40 has moved the distance required for the first sensors 82, 83 to switch from OFF to ON after the switching unit 40 starts moving. For example, the operation status information generating unit 64c may determine in advance the time it takes for the switching unit 40 to move that distance, and make the determination after that moving time has elapsed.
  • step S204 If it is determined in step S204 that both first sensors 82 and 83 are ON (step S204: Yes), the operation status information generating unit 64c generates normal operation status information indicating that the operation status of the switching unit 40 is normal (step S206). In other words, the operation status information generating process is executed.
  • the operation control unit 64d stops the operation of the actuator 50 based on the normal operation status information generated in step S206 (step S207), and ends the process. That is, the operation control process is executed.
  • the control device 60 may cause the notification unit 70 to output, for example, a sound indicating that the operation of the switching unit 40 is normal.
  • step S204 If it is determined in step S204 that neither of the first sensors 82, 83 is ON (step S204: No), the operation status information generating unit 64c determines whether either one of the first sensors 82, 83 is ON based on the detection signal (step S209).
  • step S209 If it is determined in step S209 that either one of the first sensors 82, 83 is ON (step S209: Yes), the operation status information generating unit 64c generates abnormal operation status information indicating that the operation status of the switching unit 40 is abnormal based on the abnormality of either one of the first sensors 82, 83 (step S210). That is, the operation status information generating process is executed.
  • the operation control unit 64d stops the operation of the switching unit 40 based on the abnormal operation state information generated in step S210 (step S211), and ends the process. That is, the operation control process is executed.
  • the control device 60 may cause the notification unit 70 to output, for example, a sound indicating that the operation of the switching unit 40 is abnormal.
  • step S209 If it is determined in step S209 that either one of the first sensors 82, 83 is ON (step S209: Yes), the operation status information generating unit 64c generates abnormal operation status information indicating that the operation status of the switching unit 40 is abnormal based on the abnormality of both the first sensors 82, 83 (step S212).
  • the operation control unit 64d stops the operation of the switching unit 40 based on the abnormal operation state information generated in step S212 (step S213), and ends the process. That is, the operation control process is executed.
  • the control device 60 may cause the notification unit 70 to output, for example, a sound indicating that the operation of the switching unit 40 is abnormal.
  • the first sensors 82, 83 are arranged along a predetermined direction, so that the same detection target can be detected by multiple first sensors at the same time. This makes it possible to determine whether or not a malfunction has occurred in the first sensors 82, 83. Furthermore, the second sensors 84, 85 are arranged at different positions along one direction D1, so that even if one second sensor 84 is malfunctioning, the detection target can be detected by the other second sensor 85. This allows the abnormality detection device 80 to properly detect an abnormality in the slag transport device 100.
  • operation status information indicating the operation status of the switching unit 40 is generated based on the switching operation information of the switching unit 40 and the detection signals of the first sensors 82, 83 and the second sensors 84, 85.
  • the switching unit 40 can be operated appropriately even if the first sensors 82, 83 and the second sensors 84, 85 fail. This allows the switching operation of the switching unit 40 to be performed continuously without interruption. Therefore, it is possible to prevent the occurrence of serious trouble that would halt the operation of the equipment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
PCT/JP2023/032386 2022-11-15 2023-09-05 異常検知装置、溶滓の搬送装置及び、溶滓の搬送方法 WO2024105979A1 (ja)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54134006A (en) * 1978-04-11 1979-10-18 Nippon Kokan Kk <Nkk> Quantitative quantity separator for molten slag
JPS57147249U (enrdf_load_stackoverflow) * 1981-03-12 1982-09-16
JP2005230876A (ja) * 2004-02-20 2005-09-02 Mitsubishi Materials Corp 溶湯流路の切替装置
JP2009034717A (ja) * 2007-08-03 2009-02-19 Mitsubishi Materials Corp 鋳造装置
KR20140142495A (ko) * 2013-06-04 2014-12-12 주식회사 포스코 슬래그 이동경로 변경이 가능한 슬래그탕도

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54134006A (en) * 1978-04-11 1979-10-18 Nippon Kokan Kk <Nkk> Quantitative quantity separator for molten slag
JPS57147249U (enrdf_load_stackoverflow) * 1981-03-12 1982-09-16
JP2005230876A (ja) * 2004-02-20 2005-09-02 Mitsubishi Materials Corp 溶湯流路の切替装置
JP2009034717A (ja) * 2007-08-03 2009-02-19 Mitsubishi Materials Corp 鋳造装置
KR20140142495A (ko) * 2013-06-04 2014-12-12 주식회사 포스코 슬래그 이동경로 변경이 가능한 슬래그탕도

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