JPH01140001A - Device for measuring erosion of mobile high temperature container refractory material - Google Patents

Abstract

PURPOSE:To enable accurate and automatic measurement of erosion by a method wherein a sensor, a comparator, and an erosion sensor circuit are provided. CONSTITUTION:An erosion sensor circuit 13 detects fusion of a tip sensor P of a resistance wire 10 on each sensor S from a change in resistance which accompanies fusion. Once it detects an erosion, it maintains the detected state. The circuit 13 includes a comparator 36, which detects fusion of a detector P by comparing a detected signal from the detector P of the sensor S with a constant reference voltage VST, and a transistor (Tr) 37 which is driven by the H level signal from the comparator 36. A set drive coil 38a is excited by the Tr 37 operation. Then an indication lamp 39 lights up when a latching relay 38 is closed which serves as a non-volatile memory for closing load contacts 38b and 38c. Then with the operation of a Tr 45, a set drive coil 38d is excited, causing the contacts 38b and 38c to open. Also, the contact 38c is connected to a remote output terminal 46 to pick up the erosion detected signal to the outside.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a torpedo car (pig-mix car) used for transporting high-temperature melts such as molten metal, molten lime, and glass.
The present invention relates to a device for measuring the amount of erosion of a refractory lined inside a mobile high-temperature melt container such as a converter or a ladle.

[Prior art] ■ Molten metal containers that store high-temperature molten metal, such as furnaces, converters, ladles, etc., reaction vessels that carry out severe metallurgical reactions in high-temperature environments, or soaking furnaces, etc. Furnace bodies that maintain a high temperature inside for long periods of time are constructed by lining the inner wall of a frame or box made of iron skin or the like with a refractory material. However, these lined refractories
As they are repeatedly subjected to thermal or mechanical punctures over a long period of time, they gradually become brittle and suffer wear and tear such as falling off, necessitating temporary or fundamental repairs. . For this reason, accurately understanding the corrosion state of the refractory lining has become an essential management item for continuing safe operations.

Therefore, an apparatus for measuring the amount of erosion of refractory linings disclosed in Japanese Patent Application Laid-Open No. 57-148181 has been used.

This erosion amount measuring device is configured as shown in Fig. 8, and this Fig. 8 shows that the tip detection part P of the sensor S buried in the lining refractory (not shown) is in an initial short-circuit state (normal state, that is, Detects the moment when the resistance value (Rs) of sensor S increases due to corrosion of the refractory material (undetected state).
It is a circuit diagram showing a flow from lighting up an indicator light 70 to sounding an alarm.

As shown in FIG. 8, the sensor S consists of two resistance wires 10 and 10 made of a high-melting point wire whose electrical resistance has a small temperature dependence, and whose tips are connected to a refractory wall in contact (or non-contact). This is configured as a tip detection section P for detecting erosion.

Further, 62 is a current lead wire connected to the resistance wire 10 of the sensor S, 63 is a voltage lead wire also connected to the resistance wire 1o of the sensor S, and 64 is a current lead wire connected to the current lead wire 62 and connected to the sensor S. A differential amplifier 65 for detecting the flowing current value is connected to the voltage lead wire 63 and is connected to the sensor S.
A differential amplifier for detecting the voltage value between both ends; 66 is a divider that calculates the ratio between the current value and the voltage value from the differential amplifiers 64 and 65; 67 is the output voltage from this divider 66. A voltage comparator 68 compares the voltage with a constant voltage.
This is a flip-flop for operating the indicator lamp 7o and the monostable multivibrator 69 by the output voltage from 7.

With the above-described configuration, the conventional lining refractory erosion amount measuring device operates as follows. When this device is powered on, voltage VCC rises and current i is supplied to sensor S via resistor R. The voltage v1 across the resistor R1 is amplified by the differential amplifier 64 and supplied as the X input of the divider 66. The voltage v2 across the sensor S is also applied to the differential amplifier 6.
After being amplified by 5, it is supplied to the Y number of dividers 66.

The divider 66 calculates the ratio of the above-mentioned X input and Y input (proportional to the resistance value Rs of the tip detection section P) and calculates the voltage V. The voltage is then output to the voltage comparator 67. In the voltage comparator 67, a constant voltage (Vs) determined by the variable resistor (VRl) is compared with the output (V, ) from the divider 66. That is, when the tip detection part P of the sensor S is in a normal short-circuited state without melting and damage, the resistance of the sensor S (
Since Rs) is small and the output (■.) is smaller than the constant voltage (Vs), it is determined that the corrosion of the lining refractory has not reached the position of the tip detection part P of the sensor S, and the flip-flop A high level signal is output to 68, and indicator light 7
0 will not light up, and the monostable multivibrator 69 will not operate.

On the other hand, when the tip detection part P of the sensor S is melted, the resistance (Rs) of the sensor S increases and the output from the divider 66 (
vo) becomes large and the magnitude relationship with the constant voltage (Vs) in the voltage comparator 67 is reversed, so at this time the corrosion of the lining refractory has reached the position of the tip detection part P of the sensor S. It determines this and outputs a low level signal to the flip-flop 68 to light up the indicator light 70 and activate the monostable multivibrator 69 to issue an alarm.

In this way, when the erosion of the lining refractory reaches the tip detection part P of the sensor S, the state is detected and displayed as a change in resistance, so the amount of erosion of the lining refractory can be accurately measuredff. be able to.

By the way, mobile high-temperature melt containers, such as torpedo
The conventional method for measuring the amount of corrosion of refractories in a furnace is to use laser light (Japanese Patent Laid-Open No. 58-37507
Other methods have also been proposed, such as measuring the temperature of the torpedo car surface (furnace shell).

In the method using laser light, as shown in Fig. 9,
With no hot metal stored in the furnace la of the torpedo car 1,
First, a light emitting device 14 that generates a light beam 4a such as a gas laser is positioned so that the optical axis of the light beam 4a coincides with the core 3 of the torpedo car 1 using a reference point set on the reactor shell 1b of the torpedo car 1 as a reference point. Vernier for swinging head 5. It is supported by vertical rods 6, horizontal frames 7 and struts 8.

Then, an expandable and retractable measuring scale 9 is placed in the diametrical direction of the furnace 1a (direction orthogonal to the light beam 4a), and supported by bringing both ends into contact with the lining refractory 2 of the furnace 1a. ,
The core 3 is made clear by the light beam 4a of the luminescent bag rL4,
The scale indicated by the light beam 4a on the scale 9 is read, and the amount of erosion is measured by finding the difference between the scale reading and the previously read scale reading at the same point in the new torpedo car furnace.

On the other hand, in the method of measuring the temperature of the torpedo car surface, the temperature distribution of the torpedo car surface is measured using a thermocouple or thermopure, and based on the measurement results, the lining is determined by heat transfer calculation and data accumulation analysis. It is determined by calculating the amount of corrosion of refractories.

[Problems to be Solved by the Invention] However, the conventional lining refractory erosion amount measurement device (see FIG. 8) as described above has the following problems.

■The circuit configuration is complicated and the device is large, making it impossible to handle portablely, making it particularly unsuitable for mobile high-temperature melt containers such as torpedo cars, and making the manufacturing cost extremely high.

(2) If a power outage or outage occurs while the device is in operation, the detection output from the device is reset, making the state of erosion unknown and impossible to measure.

Furthermore, the conventional means using laser light (see FIG. 9) has the following problems.

0 In order to support the light emitting device 4, a horizontal frame 7, a support column 8, etc. are required, making the device large-scale and expensive.

■It is impossible to measure the amount of erosion during the operation of Torpedo Force-1 (while transporting high-temperature molten material such as hot metal in the furnace 1a), and when measuring the amount of erosion, , the operation must be interrupted and the hot metal in the furnace la must be discharged, resulting in a decrease in productivity.

■Since the device is set for each measurement, the setting accuracy of some of the mechanisms and sensors is uncertain, making it impossible to obtain stable reproducibility and resulting in poor measurement accuracy.

■Since manual work (installation of scale 9, etc.) is required inside the furnace la of Torpedo car 1, even though it is not in operation, it is difficult to work in a bad environment due to residual heat and slag dust remaining inside. There are major safety issues. If this work were to be automated, the equipment would be even more expensive.

Furthermore, the conventional means that utilizes the temperature measurement of the torpedo car surface iron skin has the following problems.

■Similar to the conventional means described above, it is impossible to measure the amount of erosion while the torpedo car is moving.

■As the conditions inside the torpedo car differ, the conditions for heat transfer calculations also differ, reducing calculation accuracy.

■It takes a considerable amount of time to accumulate and analyze data, so it is not possible to immediately grasp the erosion state and diagnose the erosion life, and the analysis equipment is extremely expensive.

The present invention aims to solve the above-mentioned problems, and uses a simple and inexpensive configuration to automatically and accurately measure the amount of erosion of the refractory lining of a mobile high-temperature melt container during operation. It is an object of the present invention to provide a highly reliable mobile high-temperature melt container lining refractory material erosion measurement device that can perform measurements.

[Means for Solving the Problems] Therefore, the apparatus for measuring the amount of erosion of the refractory lining of a mobile high-temperature melting container of the present invention is capable of measuring the amount of erosion of the refractory lining of a mobile high-temperature melting container. a power source capable of applying a voltage to the sensor, the sensor being inserted from the outer wall side of the refractory lining to detect corrosion of the refractory lining;
An erosion detection circuit that detects the fused state of the resistance wire of the sensor to detect erosion of the lining refractory, and once corrosion is detected, maintains the detected state in a non-volatile memory, is installed in the mobile high-temperature melt container. It is characterized by the fact that it is attached.

[Function] In the above-described apparatus for measuring the amount of erosion of the refractory lining of a mobile high-temperature melt container of the present invention, even if the high-temperature melt is stored in the mobile high-temperature melt container, When the resistance wire of the sensor is fused due to the erosion state of the lining refractory, the erosion detection circuit detects the erosion of the lining refractory at the time of detection of the fusion and continues to hold the detection state in a non-volatile memory,
This ensures that the system will not be affected by power outages and outages.

Furthermore, since the sensor, the power supply to the sensor, and the erosion detection circuit are all attached to the movable high-temperature melt container, the amount of erosion is constantly monitored even when the high-temperature melt container is in motion. Measurements are taken.

[Embodiments of the invention] Embodiments of the present invention will be described below with reference to the drawings.

Figures 1 to 6 show an apparatus for measuring the amount of erosion of a refractory lining a mobile high-temperature melt container as a first embodiment of the present invention. Figure 1 is its circuit diagram, and Figure 2 is the embodiment of the present invention. A partially cutaway side view of a torpedo car to which the device has been applied, Figure 3 is a sectional view taken along the ■-■ arrow in Figure 2, and Figure 4 is a side sectional view showing the connector and its attachment/detachment mechanism. , FIG. 5 is a flowchart for explaining the timing and procedure for attaching and detaching the connector, and FIG. 6 is a diagram showing a modified example of the arrangement of the sensor. In this example, a case where the mobile high-temperature melt container is a torpedo car will be described in detail.

The device according to the first embodiment of the present invention is constructed as shown in FIGS. 1 to 3, and includes a sensor S for detecting erosion of the refractory lining.
consists of two high-melting point wires with low resistance and low temperature dependence, and by bringing their tips into contact, a tip detection part P for detecting corrosion of the lining refractory is formed. The erosion state of the lining refractory 2 is detected by the melting of the tip detection portion P.

A plurality of sensors S having the above-mentioned configuration are provided at appropriate locations, and are mounted on the outer wall side of the lining refractory 2 (outside the furnace shell 1b).
It has been inserted and buried since then. In this embodiment, the sensors S are provided at a plurality of points around the level of the hot metal surface 11a of the hot metal 11 when the hot metal is stored in the furnace 1a of the torpedo car 1. This arrangement position is such that slag (not shown) floating on the hot metal 11 causes the lining refractory 2 to
This is a location where erosion is severe.

A sensor cable 12a on the furnace la side and a sensor cable 12b on the trolley 1c side, which are arranged along the outer surface of the furnace shell 1b, are connected to the resistance wire 10 of each sensor S. Each sensor S is connected to an erosion detection circuit 13 via.

This erosion detection circuit 13 detects the blown state of the tip detection portion P of the resistance wire 10 of each sensor S from the resistance change accompanying the blown out, and once erosion is detected, the detected state is maintained. The erosion detection circuit 13 is basically as follows.
A comparison in which the detection signal from each tip detection section P of the sensor S is compared with a constant reference voltage VST (set by the variable resistor 40) to detect fusing (erosion of the lining refractory 2) of each tip detection section P. 36, a transistor 37 that is driven in response to a high level signal from the comparator 536, and a set drive coil 38a due to the operation of this transistor 37.
When energized, the load side contact 38b.

It consists of a latching relay 38 as a nonvolatile memory that closes the latching relay 38c, and an indicator light (LED) 39 that lights up when the latching relay 38 is opened.

In addition, in FIG. 1, the reference numeral 41 indicates the latching relay 3.
8, indicator light 39, etc., when performing self-diagnosis or maintenance inspection (detailed operation will be described later), 4
2. 43 is a monostable multivibrator; 44 is a switch for resetting the latching relay 38 (turning off the indicator light 39); 45 is a transistor that is driven when the switch 44 is turned on; The drive coil 38d is excited, and the load side contacts 38b and 38c are opened. Also,
The load side contact 38c is connected to a remote output terminal 46 to output the erosion amount detection signal to the outside.

On the other hand, between the sensor cables 12a and 1.2b, the trolley lc side of the torpedo car 1 and the furnace la
A connector receptacle 14a and a connector plug 14b are installed on the sides, respectively.

These connector receptacles 14a and connector plugs 14b constitute a connector C that is mutually detachable. Details of this connector C and its attachment/detachment mechanism will be described later with reference to FIG. 4.

Further, on the truck lc of the torpedo car 1, a solar cell 17 and a rechargeable battery 18 are provided as power sources capable of applying voltage to each sensor S and each erosion detection circuit 13. The solar cell 17 generates electric power by receiving sunlight, etc.
The power is stored in a rechargeable battery 18 via a power supply cable 17a and a voltage is applied to each erosion detection circuit 13, and one rechargeable battery 18 is used to store power from the solar cell 17 while the device is in operation. In case of shortage, power is supplied to the various outlets instead of the solar cell 17.

Note that each erosion detection circuit 13 and rechargeable battery 18 are housed in a box 19 on the truck lc of the torpedo car 1.

Further, when discharging the hot metal in the furnace 1a from the tap hole 26, the furnace 1a is configured so that the tap hole 26 faces downward.
(See reference numeral 3 in FIG. 9) is supported on a truck 1c so as to be rotatable around the truck 1c, and is rotationally driven by a drive source 20 installed on the truck lc.

Furthermore, in FIG. 2, reference numeral 21 is connected to a connector plug (not shown) for externally supplying power to a drive source 20 that rotationally drives the furnace 1b when the torpedo car 1 is stopped and hot metal in the furnace la is discharged. The connector receptacle to be attached, 22.23 is a control cable, and the control cable 22 is
When the connector receptacle 21 is connected to a connector plug (not shown) and power supply to the drive source 2o is started, a separation command signal is sent to the connector C, while the discharge of hot metal from the furnace 1a is finished and the furnace 1a is returned to its normal state. This is for sending an operation stop command signal to the drive source 20 from a limit switch (not shown) that operates when the limit switch returns to II (the position shown in FIGS. 2 and 3). In addition, the control cable 23 has a connector C
When the separation is completed, an operation start command signal is sent to the drive source 20. On the other hand, when the discharge of hot metal from the furnace 1a is completed and the furnace 1a returns to the above-mentioned normal position and the drive source 20 stops operating, the connector This is for sending a coalescence command signal to C. Further, in FIGS. 2 and 3, 24 is a wheel provided on the truck 1c of the torpedo car 1, and 25 is a rail laid to engage with the wheel 24 and allow the torpedo car 1 to travel.

By the way, the connector C and the mechanism for attaching and detaching the connector C are constructed as shown in FIG. 4.

That is, a support stand 27 is fixed to the bogie lc side of the torpedo car 1, and a slide shaft 28 is provided on this support stand 27 so as to be slidable in the horizontal direction (left-right direction in FIG. 4) via a linear slide bearing 27a. It is being A connector receptacle 14a is attached to the tip of the slide shaft 28.
is attached by a coil spring 29 and bolt 30, and the coil spring 29 connects the connector receptacle 14.
In addition to absorbing the impact when the connector plug 14a and the connector plug 14b are joined together, the connector receptacle 14a can freely tilt with respect to the slide shaft 28. Further, the coil spring 29 is compressed by tightening the bolt 30, and urges the connector receptacle 14a toward the connector plug 14b.

Further, a rack 28a is formed on the slide shaft 28, and a pinion gear 31 that meshes with the rack 28a is provided on the truck lc side. When the pinion gear 31 is rotationally driven by a motor (not shown) or the like, the slide shaft 28 slides in the horizontal direction, and the connector receptacle 14a and the connector plug 14b are attached and detached. Furthermore, a plurality of guide holes 28b are formed in the slide shaft 28,
A plurality of sensor cables 12b on the truck lc side are each guided through guide holes 28b to the connector receptacle 14a, and are connected to pins 34a protruding from the connector receptacle 14a toward the connector plug 14b side.

On the other hand, a support stand 35 is fixed to the furnace la side of the torpedo car 1, and a connector plug 14b is fixed to this support stand 35. Pin 3 is attached to the connector plug 14b when mating.
A plug 34b is provided to connect with the plug 34a.
The sensor cable 12a on the Class 1a side is connected to b. The connector plug 14b also includes a tapered shaft 32b that fits into the tapered hole 32a of the connector receptacle 14a when mating, and a tapered shaft 32b that fits into the tapered hole 32a of the connector receptacle 14a when mating.
A guide hole 33b is formed to guide a rocket pin 33a protruding from 4a and fit into the rocket pin 33a. The rocket pin 33a and the guide hole 33b are rotated in the direction of rotation (rotation around the axis of the connector C) when mating.
It is provided for positioning.

Incidentally, the above-mentioned connector C and the procedure for attaching and detaching it using its attaching and detaching mechanism will be described later with reference to FIG.

Next, the operation of the apparatus for measuring the amount of erosion of the refractory lining of a mobile high-temperature melt container as a first embodiment of the present invention constructed as described above will be described in detail.

First, the basic operation of each erosion detection circuit 13 (at this time, the changeover switch 41 is set to the comparator 36 side) is as follows. Sensor S installed at each measurement point
The output voltage through the tip detection section P and the resistance wire 10 is approximately at the ground level when the corrosion of the lining refractory 2 has not reached each tip detection section P. terminal input), and the output from the comparator 36 is at a low level. Therefore, since the base potential of the transistor 37 is low and no current flows between the collector and emitter in the off state, the drive coil 38a of the latching relay 38 does not operate, and the load side contact 38
b and 38c are open.

When the erosion of the lining refractory 2 reaches the tip detection part P, the tip detection part P is fused by the hot metal 11 and becomes open, and each tip detection part P in the sensor S, the resistance wire 10
The output voltage through the power supply voltage level (solar cell 17
or the voltage level of the rechargeable power supply 18).

At this time, the output from the comparator 36 is inverted to High level by appropriately setting the constant reference voltage vs. voltage in the comparator 36 using the variable resistor 4o. Therefore,
The base potential of the transistor 37 becomes high, and the collector and
A current flows between the emitters to excite the drive coil 38a of the latching relay 38, and the load side contacts 38b and 38
c is closed, the indicator light 39 lights up to clearly indicate which tip detection part P the erosion has reached, and if necessary, this detection state can be transmitted to the remote output terminal 4.
It is taken out from 6.

After this, the tip detection part P, which has been melted and is in an open state, may be electrically short-circuited again by the conductive hot metal 11. In such a case, in the erosion detection circuit 13, the output from the comparator 36 is again inverted from High level to Low level, the base potential of the transistor 37 becomes low, and the collector and emitter are turned off. As a result, current no longer flows through the drive coil 38a of the latching relay 38, but the load-side contacts 38b and 38c, which were previously closed, are kept open due to the function of the latching relay 38 (latched). ), so 1
The indicator light 39 remains lit.

Further, the state in which the detection signal is output from the remote output terminal 46 is also maintained.

Furthermore, even if the power is cut off due to a power outage (such as when there is a shortage of power supplied from the solar cell 17 and rechargeable battery 18 due to a continuous period of no sunshine) while this device is in operation, the latching relay 38 function allows the load to be Side contacts 38b and 38c
Since the open/closed state of the indicator light 39 is maintained, when the power is restored, the display state of the indicator lamp 39 and the output state of the detection signal before the power outage are reliably reproduced. In other words, errors in erosion detection information will not occur due to power outages or the like.

The above is the basic operation of the erosion detection circuit 13, but in actual circuit, the switch 4 is required as shown in FIG.
1,44. Monostable multivibrators 42, 43, etc. are provided. Next, these operations will be explained.

The output from the comparator 36 is input to a monostable multivibrator 42 via a changeover switch 41. This monostable multivibrator 42, when the output from the comparator 36 rises from low level to high level,
That is, at the moment when the tip detection part P is fused and becomes open,
It outputs a high level signal with a constant time width. This constant time width is set as the minimum time required to excite the drive coil 38a of the latching relay 38. The base voltage of the transistor 37 is limited by the refractory lining 2 so as to produce a pulsed signal in this way.
After the erosion reaches the tip detection part P, the drive coil 38a
This is to avoid wasting power as current continues to flow through the circuit.

Further, the switch 44 is momentary (turns on only when pressed), and by turning on this switch 44, the monostable multivibrator 43 (which has the same function as the monostable multivibrator 42 described above) is turned on. A change signal from % level to HiHh level is input. As a result, the monostable multivibrator 43 outputs a High level signal to the transistor 45 for the minimum time width necessary to excite the reset drive coil 38d of the latching relay 38. Due to this pulsed signal, both the load side contacts 38b and 38c change from the open state to the open state, the indicator light 39 is turned off, and the output of the detection signal from the remote output terminal 46 is also stopped. That is, by pressing the switch 44, the latching relay 38 is manually reset.

Conversely, when it is desired to turn on the indicator light 39 manually, the changeover switch 41 is switched from the comparator 36 side to the power supply side. By performing this switching operation, even if the output from the comparator 36 is at a low level, the input signal to the monostable multivibrator 42 changes from low level to high level, and the desired operation is performed. By operating the aforementioned changeover switch 41 and switch 44 to set/reset the latching relay 38, self-diagnosis and maintenance inspection of the erosion detection circuit 13 (particularly the latching relay 38 and indicator light 39) can be performed. .

In addition, in FIG. 1, only one tip detection part P is shown in each sensor S, but at each measurement point, as shown in FIG. The detection parts P may be arranged at different positions in the thickness direction of the refractory lining 2. In this case, by detecting the fusing of the plurality of tip detection parts P at each measurement point by the erosion detection circuit 13, the progress of erosion (residual thickness) of the lining refractory 2 at each measurement point is determined step by step. Be able to measure.

As described above, using the sensor S having the tip detection part P, even when the hot metal 11 is stored in the furnace 1a of the torpedo car 1, the hot metal 11 is always near the level of the hot metal level ILa, that is, the lining The corrosion state of the lining refractory 2 at multiple measurement points around the lining refractory 2 of the furnace 1a at the slag level position above the hot metal 11 during hot metal storage, where the corrosion of the refractory 2 is most severe.

It is measured by the erosion detection circuit 13.

The corrosion state is displayed by the 1 indicator light 39, and by connecting the remote output terminal 46 to another alarm circuit, the output from the remote output terminal 46 can be taken out to turn on the warning light, buzzer, or alarm. The state of erosion of the refractory lining 2 can be notified to an operator or the like by an alarm such as a sound.

In addition, this device is applied to the moving torpedo car 1, and since it is impossible to run while supplying power to the device with the power supply cable connected from the outside of the torpedo car 1, the sun is placed on the torpedo car 1's bogie 1c. A battery 17 or a rechargeable battery 18 is mounted. This results in
Even when the torpedo car 1 is running, electric power is continuously supplied to the device and erosion detection can be performed.

Furthermore, even if a power outage occurs during the operation of this device, the erosion state is stored in the latching relay 38, which is a non-volatile memory, so that the erosion state will be reliably reproduced after power is restored, and the erosion state will be corrected. Nothing becomes unknown or unmeasurable.

By the way, the furnace 1a of the torpedo car 1 is equipped with ordinary hot metal 11.
During transportation, etc., as shown in Figures 2 and 3, the tap hole 2
6 is fixed in a state facing upward, but when discharging the hot metal 11 stored in the furnace la from the tap hole 26,
The reactor 1a is driven by a driving source 20 (see numeral 3 in FIG. 9).
The tap hole 26 is directed downward. At this time, a sensor S installed on the rotating furnace la side
The distance between the erosion detection circuit 13 and the erosion detection circuit 13 provided on the fixed trolley 1c side varies. The furnace 1a rotates several times in the same direction in order to completely exhaust the contents. Therefore, it is impossible to take measures such as making the sensor cable longer. Therefore, in this embodiment.

A connector C is provided between the sensor cables 12a and 12b between each sensor S and the erosion detection circuit 13. In other words, by attaching and detaching the connector C according to the flow shown in FIG. 5, it is possible to easily correspond to the rotation of the furnace 1a without increasing the length of the sensor cable.
Normal measurement becomes possible.

When the torpedo car 1 is in a state of transporting hot metal 11 or injecting hot metal 11 from the tap hole 26, the connector C is in a joined state (a state in which the connector receptacle 14a and the connector plug 14b are joined to each other), The detection signal from each sensor S is input to the erosion detection circuit 13 via the sensor cable 12a, connector receptacle 14a (pin 34a), :I connector plug 14b (plug 34b), and sensor cable 12b, so as described above, The erosion life of the refractory lining 2 is continuously diagnosed. On the other hand, when discharging the hot metal 11 from the furnace 1a of the torpedo car 1, the connector receptacle 14a and the connector plug 14b are automatically separated to allow the furnace 1a to rotate. When it returns to its original normal position (the position shown in FIGS. 2 and 3), the connector receptacle 14a and the connector plug 14b are automatically brought together again, and the erosion life diagnosis is continued. During tapping, since the connector C is separated as described above, it is not possible to detect the corrosion state of the lining refractory 2, but the 1 individual circuit 1
Due to the self-holding function of 3a or 13c, the erosion state detected so far is held and output.

Below, the timing and procedure for attaching and detaching the connector C during the tapping operation will be explained in more detail with reference to FIG. When the torpedo car 1 transports the hot metal 11 and arrives at a predetermined position and stops, a connector plug (not shown) is coupled to the connector receptacle 21 to supply power to the drive source 2o.

When it is determined that power supply from an external power source (not shown) has started (step SL), a minute command signal is sent to the connector C through the control cable 22, and the connector receptacle 14a and connector plug 14b are connected to each other. are separated (step S2). Thereafter, the pinion gear 31 is rotationally driven in a predetermined direction by a motor (not shown), and the slide shaft 28 is rotated horizontally (leftward in FIG. 4).
The connector receptacle 14a is separated from the connector plug 14b.

When the separation of the connector C is completed, an operation start command signal is sent to the drive source 20 through the control cable 23, and the drive source 2
Power is supplied to the terminal o (step S3). As a result, the drive source 20 is activated to drive the furnace 1a to rotate and tap iron. When it is determined by the operation of a limit switch (not shown) that tapping has been completed and the furnace 1a has returned to its original normal position (step S4), an operation stop command signal is issued in accordance with the operation of this limit switch. is sent to the drive source 20 through the control cable 23, and the power supply to the drive source 20 is cut off (step S5).

When the drive region 20 completely stops its operation, a mating command signal is sent to the connector C through the control cable 23 to connect the connector receptacle 14a and the connector plug 1.
4b are combined again (step S6). In other words, the pinion gear 31 is rotationally driven in a direction opposite to the above-mentioned predetermined direction by a motor or the like (not shown), and the slide shaft 28
slides in the horizontal direction (to the right in FIG. 4), and the connector receptacle 14a is joined to the connector plug 14b.

At this time, the tapered shaft 32 of the connector plug 14b
b and the tapered hole 32a of the connector receptacle 14a to position the connector C in the center direction. In addition, by providing a degree of freedom with the coil spring 29 and bolt 30, it is possible to follow even if there is a slight error in the rotation stop position of the furnace 1a of the torpedo car 1, and the shock at the time of joining is also absorbed. It has become. Further, the guide hole 33b of the connector plug 14b and the rocket pin 33a of the connector receptacle 14a also position the connector C in the rotational direction around the center, ensuring that the corresponding pin 34a and plug 34b are fitted. It looks like this.

In addition, the coil spring 29 allows the connector receptor 14 to
Since a is always biased towards the connector plug 14b, the structure is such that when the connector C is in the mated state, it will not come loose due to vibration or the like.

After the connection between the connector receptacle 14a and the connector plug 14b is completed as described above, the connector plug (not shown) is separated from the connector receptacle 21, and the external power source (not shown) is disconnected (step 87).
Tapping work is completed.

As described above, according to the apparatus of the first embodiment of the present invention, the following effects can be obtained.

■The amount of erosion in the refractory lining 2 of the torpedo car 1 can be automatically, accurately and reliably measured even while the hot metal 11 is being transported, and there is no need to interrupt operations when measuring the amount of erosion, so production It does not cause a decline in sexuality.

■This device can be used as a complete warning means to stop operation when the corrosion of the refractory lining 2 reaches a certain level, so the refractory lining 2 of the torpedo car 1 can be
can be used to the maximum.

The unit price of the lining refractory 2 can be reduced, and the occurrence of leakage accidents of the hot metal 11 in the tobee car 1, red heat accidents of the furnace shell 1b, etc. can be reliably prevented.

(2) Both the mechanical section and the circuit section of the device can be made smaller and simpler than conventional devices, and manufacturing costs can also be reduced.

■There are no mechanical moving parts, and if the sensor S is buried in the refractory lining 2, it will be possible to
Since the sensor S is not moved until it is time to replace the tape, the reliability of measurement is extremely high.

(2) Unlike the conventional method, there is no need for a worker to enter the furnace la, and there is no need to perform complicated analysis, so the amount of erosion of the refractory lining 2 can be measured extremely safely and easily.

■Even if a power outage or power outage occurs during operation of this device, the erosion detection circuit 13 is equipped with a latching relay 38, which is a non-volatile memory, and the erosion state is memorized, so the erosion state can be restored. You can definitely reproduce it later.

Next, a description will be given of an apparatus for measuring the amount of erosion of a refractory lining a mobile high-temperature melt container as a second embodiment of the present invention. FIG. 7 is a circuit diagram thereof, and the second embodiment is similar to the first embodiment. It is structured almost the same way.

In this second embodiment, an erosion detection circuit 13A as shown in FIG. 7 is provided in place of the erosion detection circuit 13 of the first embodiment, and an output/display circuit 49. A switching device 50 and an operating device 51 are provided.

First, each erosion detection circuit 13A of the second embodiment converts the detection signal from each tip detection section P of the sensor S into a constant reference voltage VS.
A comparator 36 that detects the melting of each tip detection portion P by comparing it with T (set by the variable resistor 40), and this comparator 3
A holding circuit 47 that holds the detection signal (High level signal) from 6 and outputs it to the remaining thickness conversion circuit 13b (not shown), and a nonvolatile memory 48 that stores the detection signal held by this holding circuit 47. It is composed of. In addition, as the nonvolatile memory 48, EEPRO
M, RAM with power backup, etc. are used.

Further, each erosion detection circuit 13A is connected to an output/display circuit 49 via a switch 50, and this output/display circuit 49 displays the results of measurement of the amount of erosion by each erosion detection circuit 13A. There is. Further, a remote output terminal 52 is connected to the output/display circuit 49 for outputting the measurement results of the amount of erosion to the outside.

The switch 50 is switched and driven by the operating device 51, and is provided to output the erosion amount measurement result to the output/display circuit 49 as necessary.

Note that power to each circuit in FIG. 7 is all supplied from the solar cell 17 or rechargeable battery 18 on the torpedo car 1.

With the above-described configuration, in the erosion detection circuit 13A of the second embodiment of the present invention, when the erosion of the lining refractory 2 has not reached the tip detection portion P, the output from the comparator 36 is Low. It remains at the level, and neither the holding circuit 47 nor the nonvolatile memory 48 operates. When the corrosion of the lining refractory 2 reaches the tip detection part P, the comparator 36
The output from the holding circuit 47 is inverted to High level, the output from the holding circuit 47 is also High level, and a detection signal is output to the output/display circuit 49 via the switch 50.
A high level signal is also written into the nonvolatile memory 48.

Therefore, in this erosion detection circuit 13A, similarly to the first embodiment, the tip detection portion P is melted and is in the open state.
If there is an electrical short circuit again due to the conductive hot metal 11, the output from the comparator 36 will again be inverted from High level to Low level, but the detection signal that became High level once again will be transferred to the holding circuit. 47, the state in which the detection signal is output to the output/display circuit 49 is also maintained. Furthermore, even if the power is cut off due to a power outage while the device is in operation, the nonvolatile memory 48
Since the h level signal continues to be stored, when the power is restored, the holding circuit 47 outputs the detection signal to the output/display circuit 49 based on the data in the nonvolatile memory 48, ensuring that the output state of the detection signal before the power outage is correct. Reproduced.

In this embodiment, the output/display circuit 4 is controlled by the switch 5o.
The power supply to the refractory lining 2 and the detection signal from each corrosion detection circuit 13A can be cut off because the output/display circuit 49, which consumes a large amount of power, needs to know the state of corrosion of the refractory lining 2. When there is no switch 5, the operator 51
This is to save power consumption by setting 0 to the off state.

In this way, the device according to the second embodiment of the present invention can provide the same effects as those of the first embodiment.

In addition, in the above-mentioned embodiment, the mobile high-temperature melt container is
Although the case where it is a torpedo car is explained, the present invention is not limited to this, and for example, a converter,
The same applies to ladles, etc.

[Effects of the Invention] As detailed above, according to the apparatus for measuring the amount of erosion of the refractory lining of a mobile high-temperature melt container of the present invention, the sensor and erosion detection circuit embedded in the refractory lining can measure the amount of erosion described above. Erosion of the refractory is detected and the detected state is stored in a non-volatile memory, and since the erosion detection circuit and the power supply to the sensor are attached to the mobile high-temperature melt container, the primary You can get an effect like this.

■The amount of erosion of the refractory lining can be automatically, accurately, and reliably measured even during transportation of high-temperature molten material, and there is no need to interrupt operations when measuring the amount of erosion, which reduces productivity. There is no invitation.

The device can be used as a complete warning means to shut down operations when erosion of the refractory lining reaches a certain level.

-Both the mechanism and circuit parts of the device can be made smaller and simpler than conventional devices.

Manufacturing costs can also be reduced.

■There are no mechanical moving parts, and once the sensor is buried within the refractory lining, it will not be moved until the end of the refractory lining or when it is time to replace the refractory lining, so the reliability of measurement is improved. is extremely high.

-Measurement is automated and there is no need to perform complicated analysis, so the amount of erosion of the refractory lining can be measured extremely safely and easily.

■Even if a power outage occurs while the water system is in operation, the erosion state is stored in the nonvolatile memory, so the erosion state can be reliably reproduced after power is restored.

[Brief explanation of the drawing]

Figures 1 to 6 show an apparatus for measuring the amount of erosion of a refractory lining a mobile high-temperature melt container as a first embodiment of the present invention. Figure 1 is its circuit diagram, and Figure 2 is the embodiment of the present invention. A partially cutaway side view of a torpedo car to which the device has been applied, Figure 3 is a sectional view taken along the ■-■ arrow in Figure 2, and Figure 4 is a side sectional view showing the connector and its attachment/detachment mechanism. , FIG. 5 is a flowchart for explaining the timing and procedure for attaching and detaching the connector, FIG. 6 is a diagram showing a modified example of the arrangement of the sensor, and FIG. 7 is a mobile high temperature sensor as a second embodiment of the present invention. FIG. 8 is a circuit diagram showing a device for measuring the amount of erosion of the refractory lining of a melt container; FIG. 8 is a circuit diagram showing a device for measuring the amount of erosion of the refractory lining of a conventional torpedo car; FIG. It is a longitudinal cross-sectional view of the torpedo car for explaining an erosion amount measuring means. In the figure, 1--A torpedo car as a mobile high-temperature melt container, LA-furnace, 1B-furnace shell, 1C-carriage,
2-- Lining refractory, 10-=resistance wire, 11-- Hot metal as a high-temperature melt, 1la- Liquid level of hot metal, 12a,
12b--Sensor cable, 13, 13A-Erosion detection circuit, 14a--Connector receptacle, 14b--Connector plug, 17--Solar cell as power source, 17a
-Power supply cable, 18-・Rechargeable battery as power source, 1
9--Box body, 20-- Drive source, 21- Connector receptacle, 22. 23-- Control cable, 24...
- Wheel, 25 - Rail, 26 - Iron outlet, 27 - Support stand, 27 a - Linear slide bearing, 28 - Slide shaft, 28a - Rack, 28b - Guide hole, 29 - Coil spring , 30-bolt, 31-pinion gear, 32a=tapered hole, 32b-tapered shaft, 33a-rocket pin, 33b-guide hole, 34a-
pin, 34b-plug, 35-support stand, 36-comparator,
37 - Transistor, 38 - Latching relay as non-volatile memory, 38a - Drive coil for set, 38
b. 38c - load side contact, 38d - drive coil for reset,
39-indicator light, 40-variable resistor, 41 ・-・-changeover switch, 42.43-monostable multivibrator, 4
4-switch, 45-transistor, 46-remote output terminal, 47-holding circuit, 48--nonvolatile memory, 49
-Output/display circuit, 5o...-switcher, 51-operator, 52-remote output terminal. C-connector, P=-tip detection section, S, SL--sensor. Patent applicant: Kobe Steel, Ltd.

Claims (3)

[Claims] (1) A sensor that detects erosion of the lining refractory by fusing a resistance wire is inserted into the lining refractory of the mobile high-temperature melt container from the outer wall side of the lining refractory,
A power source that can apply voltage to the sensor, and erosion detection that detects erosion of the lining refractory by detecting the fused state of the resistance wire of the sensor and, once corrosion is detected, retains the detection state in a nonvolatile memory. An apparatus for measuring the amount of erosion of a refractory lining of a mobile high-temperature melt container, characterized in that a circuit is attached to the mobile high-temperature melt container. (2) The apparatus for measuring the amount of erosion of a refractory lining of a mobile high-temperature melt container according to claim 1, wherein the power source is a solar cell. (3) The apparatus for measuring the amount of erosion of a refractory lining of a mobile high-temperature melt container according to claim 1, wherein the nonvolatile memory is a latching relay.