CN111154935B - Device and system for detecting erosion degree of molten iron runner based on cable fusing characteristics - Google Patents
Device and system for detecting erosion degree of molten iron runner based on cable fusing characteristics Download PDFInfo
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- CN111154935B CN111154935B CN202010008601.2A CN202010008601A CN111154935B CN 111154935 B CN111154935 B CN 111154935B CN 202010008601 A CN202010008601 A CN 202010008601A CN 111154935 B CN111154935 B CN 111154935B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
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- C21B7/14—Discharging devices, e.g. for slag
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
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Abstract
The embodiment of the invention provides a device and a system for detecting the erosion degree of a molten iron runner based on the fusing characteristic of a cable, wherein the detection device comprises: a fusing part, a connecting part, and a data processing part; the fuse component includes: the first cable, the first-stage wire, the second-stage wire, the third-stage wire, the fourth-stage wire and the fifth-stage wire are connected in parallel and the fusion points rise in sequence; the connecting part comprises an iron rod and a second cable which are connected with each other; the data processing component includes a digital quantity input device. The technical scheme has the following beneficial effects: the method can realize automatic and on-line monitoring of the erosion condition of the molten iron runner, can accurately discover the erosion phenomena of the molten iron runner at different degrees, can prompt operators to take countermeasures in time, avoids serious safety accidents, and ensures normal production of the blast furnace.
Description
Technical Field
The invention relates to the field of smelting operation of a ferrous metallurgy blast furnace, in particular to a device and a system for detecting the erosion degree of a molten iron runner based on the fusing characteristic of a cable.
Background
When the blast furnace is tapped, high-temperature molten iron is injected into a molten iron tank through a molten iron runner. In the process, the refractory material layer of the molten iron runner is continuously eroded by high-temperature melting and scouring of the molten iron, so that the refractory material layer of the molten iron runner is gradually thinned to be perforated, and the molten iron further erodes other layers below the refractory material layer until the molten iron is burnt through a blast furnace tapping platform to cause molten iron leakage. The phenomenon is extremely easy to cause serious personnel and equipment safety accidents, causes great threat to personnel, rails, tank trucks and other equipment under the platform, and also seriously affects the normal production of the blast furnace. Therefore, the corrosion condition of the molten iron runner is timely detected and forecasted and an alarm is given, so that operators can take countermeasures in time, accidents are prevented, and the method has guiding significance for safe and stable operation of blast furnace production.
At present, a metal rod is manually held to be inserted into the bottom of a molten iron runner and is scratched along the bottom of the runner, and whether a pit and the depth of the pit are formed by corrosion are judged only by manual experience. The method consumes manpower, the detection result is completely dependent on experience judgment of operators, misjudgment and missed judgment are easy to cause, workers are required to approach the molten iron runner, and production safety hazards exist.
In summary, how to safely, accurately and effectively detect the erosion degree of the molten iron runner is a major problem to be solved at present.
Disclosure of Invention
The invention provides a device and a system for detecting the erosion degree of a molten iron runner based on the fusing characteristic of a cable, and aims to solve the problems that the efficiency of the original detection process is low and the detection process is unsafe.
In order to solve the technical problems, the embodiment of the invention provides a device for detecting the erosion degree of a molten iron runner based on the fusing characteristics of a cable,
the device comprises: a fusing part, a connecting part, and a data processing part;
the fuse component includes: the fuse component includes: the device comprises a first cable, a first-stage wire, a second-stage wire, a third-stage wire, a fourth-stage wire and a fifth-stage wire, wherein the first-stage wire, the second-stage wire, the third-stage wire, the fourth-stage wire and the fifth-stage wire are connected in parallel and the fusion points of the first cable and the second-stage wire are sequentially raised, the fusion point of the first cable is lower than the fusion point of the first-stage wire, and the fusion components extend into the refractory material layer at one side of the molten iron channel and the refractory material layer at the bottom of the molten iron channel from the top of the molten iron channel respectively;
the connecting part comprises an iron rod and a second cable which are connected with each other, the iron rod penetrates into the bottom of the molten iron channel, and the bottom end of the iron rod is arranged on the refractory material at the bottom of the molten iron channel;
the data processing component comprises a digital quantity input device, and the first cable, the first-stage wire, the second-stage wire, the third-stage wire, the fourth-stage wire, the fifth-stage wire and the second cable are respectively connected with the digital quantity input device.
Further, the data processing part further comprises intelligent processing equipment, digital quantity output equipment and audible and visual alarm equipment, the digital quantity input equipment, the intelligent processing equipment, the digital quantity output equipment and the audible and visual alarm equipment are sequentially connected, the digital quantity input equipment comprises parallel ports 1 to 12, data information acquired by the digital quantity input equipment is transmitted in a digital quantity signal mode, and is output to the audible and visual alarm equipment through the digital quantity output equipment after being analyzed by the intelligent processing equipment.
Further, the audible and visual alarm device comprises a hot metal runner erosion prediction device, a hot metal runner erosion 1-level alarm device, a hot metal runner erosion 2-level alarm device, a hot metal runner erosion 3-level alarm device, a hot metal runner erosion 4-level alarm device and a hot metal runner erosion through leakage alarm device.
Further, a first steel wire and a second steel wire are arranged in the first cable, the first steel wire is wrapped with a first insulating layer, and the second steel wire is wrapped with a second insulating layer; a No. 7 port in the No. 1 to 12 ports of the digital quantity input device is connected with the first steel wire, a No. 8 port in the No. 1 to 12 ports of the digital quantity input device is connected with the second steel wire, and when the temperature under the refractory material layer of the molten iron runner rises to the temperature of the fusing point of the first cable, the connection state of the No. 7 port and the No. 8 port is changed from off to on; and the port No. 7 and the port No. 8 are connected with the molten iron runner erosion prediction equipment through the intelligent processing equipment and the digital quantity output equipment.
Further, a port No. 5 and a port No. 9 in the ports No. 1 to 12 of the digital quantity input device are connected with the first-stage wire, the first-stage wire is an aluminum wire, and when the temperature under the refractory material layer of the molten iron runner is increased to the temperature of a fusing point of the aluminum wire, the connection state of the port No. 5 and the port No. 9 is changed from on to off; and the port No. 5 and the port No. 9 are connected with the iron runner erosion level 1 alarm device through the intelligent processing device and the digital quantity output device.
Further, a port No. 4 and a port No. 10 in the ports No. 1 to 12 of the digital quantity input device are connected with the second-stage wire, the second-stage wire is a copper wire, and when the temperature under the refractory material layer of the molten iron runner is increased to the temperature of the fusing point of the copper wire, the connection state of the port No. 4 and the port No. 10 is changed from on to off; and the No. 4 port and the No. 10 port are connected with the iron runner erosion 2-level alarm equipment through the intelligent processing equipment and the digital quantity output equipment.
Further, a port No. 2 and a port No. 12 in the ports No. 1 to 12 of the digital quantity input device are connected with the third-stage lead, the third-stage lead is a manganese lead, and when the temperature under the refractory material layer of the molten iron runner is increased to the temperature of the melting point of the manganese lead, the connection state of the port No. 2 and the port No. 12 is changed from on to off; and the No. 2 port and the No. 12 port are connected with the iron runner erosion 3-level alarm equipment through the intelligent processing equipment and the digital quantity output equipment.
Further, a port 3 and a port 11 in the ports 1 to 12 of the digital quantity input device are connected with the fourth-stage wire, the fourth-stage wire is a nickel wire, and when the temperature under the refractory material layer of the molten iron runner is increased to the temperature of the fusing point of the nickel wire, the connection state of the port 3 and the port 11 is changed from on to off; and the No. 3 port and the No. 11 port are connected with the molten iron runner erosion 4-level alarm device through the intelligent processing device and the digital quantity output device.
Further, a port 6 of the ports 1 to 12 of the digital quantity input device is connected with the fifth-stage wire, the fifth-stage wire is an iron wire, a port 1 of the ports 1 to 12 is connected with the iron rod, when the temperature under the refractory material layer of the iron runner rises to the melting point temperature of the iron wire, the iron wire is conducted with the iron rod, and the connection state of the port 1 and the port 6 is changed from off to on; and the No. 1 port and the No. 6 port are connected with the molten iron trough erosion penetration alarm equipment through the intelligent processing equipment and the digital quantity output equipment.
Further, a system for detecting the erosion degree of a molten iron runner based on the cable fusing characteristics is characterized in that the system is provided with two sets of devices for detecting the erosion degree of the molten iron runner based on the cable fusing characteristics according to claim 1, the molten iron runner is divided into a left molten iron runner and a right molten iron runner based on a central line of the bottom of the molten iron runner, a part of each level wire of one set of devices and a part of a first cable are buried under the refractory material layers of the side surface and the bottom of the left molten iron runner in an S shape, and a part of each level wire of the other set of devices and a part of the first cable are buried under the refractory material layers of the side surface and the bottom of the right molten iron runner in an S shape.
The invention aims to overcome the defects of the prior art, and provides a method for detecting the erosion degree of a molten iron runner based on the fusing characteristic of a cable, which can timely find the erosion degree of the molten iron runner and give an alarm to prompt operators to take countermeasures, so that major production safety accidents are avoided, and normal production of a blast furnace is ensured. According to the temperature sensing cable and different fusing points of wires (aluminum, copper, manganese, nickel and iron) made of different materials, the temperature sensing cable is arranged on the lower layer of refractory materials at the frequently eroded position of the molten iron runner, the degree of erosion of the molten iron runner is detected through the on-off condition of the wires at different temperatures, an alarm is given, and related personnel are prompted to take countermeasures in time, so that the normal operation of blast furnace production is ensured.
The technical scheme has the following beneficial effects: according to the method, according to the result of detecting the erosion position of the molten iron runner on site for a long time, a temperature sensing cable and other metal materials for fixing the fusion points are paved below the refractory material layer at the position frequently and seriously eroded by molten iron, and the erosion condition of the molten iron runner is automatically and online monitored by detecting the signal on-off change condition of the refractory material layer at different erosion degrees of the molten iron runner, and meanwhile, the erosion phenomenon of the molten iron runner at different degrees can be accurately found, and corresponding alarm is carried out. Compared with the existing detection method, the method reduces the workload and the danger of field workers, can prompt operators to take countermeasures in time, avoids serious production and safety accidents, ensures normal production of the blast furnace, and has the advantages of low input cost and convenient maintenance, and only needs to replace the first cable and wires of different materials.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic layout view of a device for detecting the erosion degree of a molten iron runner based on the fusing characteristics of a cable according to the present invention.
Fig. 2 is a schematic layout view of a three-dimensional structure of a device for detecting corrosion degree of a molten iron runner on the left side based on a cable fusing characteristic.
Fig. 3 is a schematic layout view of a three-dimensional structure of the device for detecting the erosion degree of the molten iron runner on the right side based on the fusing characteristics of the cable.
Fig. 4 is a schematic layout view of the overall three-dimensional structure of the system for detecting the erosion degree of the molten iron runner based on the cable fusing characteristics.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to overcome the defects of the prior art, and provides a method for detecting the erosion degree of a molten iron runner based on the fusing characteristic of a cable, which can timely find the erosion degree of the molten iron runner and give an alarm to prompt operators to take countermeasures, so that major production safety accidents are avoided, and normal production of a blast furnace is ensured.
As shown in fig. 1, an embodiment of the present invention provides a device for detecting a corrosion degree of a molten iron runner based on a cable fusing property, the device including: a fusing part, a connecting part, and a data processing part;
the fuse component includes: the cable comprises a first cable, a first-stage wire, a second-stage wire, a third-stage wire, a fourth-stage wire and a fifth-stage wire, wherein the first-stage wire, the second-stage wire, the third-stage wire, the fourth-stage wire and the fifth-stage wire are connected in parallel and the fusing point of the first cable is lower than that of the first-stage wire. The fuse part extends into the top of the molten iron channel below the refractory material layer at one side of the molten iron channel and the refractory material layer at the bottom of the molten iron channel respectively, then extends out of the molten iron channel from the top of the molten iron channel, or the middle parts of the first cable, the first-stage wire, the second-stage wire, the third-stage wire, the fourth-stage wire and the fifth-stage wire are buried under the refractory material layer at one side of the molten iron channel and the refractory material layer at the bottom of the molten iron channel, two ends of the first cable, the first-stage wire, the second-stage wire, the third-stage wire, the fourth-stage wire and the fifth-stage wire extend out of the top of the molten iron channel, and the middle parts of the first cable and each-stage wire are distributed below the refractory material layer at the side surface and the bottom of the molten iron channel in an S shape or a sine curve shape so as to realize full coverage of the molten iron channel as far as possible, and full-face data of the molten iron channel are obtained.
The connecting part comprises an iron rod and a second cable which are connected with each other, the iron rod penetrates into the bottom of the molten iron channel, and the bottom end of the iron rod is arranged on the refractory material at the bottom of the molten iron channel. The data processing component comprises a digital quantity input device, wherein the first cable, the first-stage wire, the second-stage wire, the third-stage wire, the fourth-stage wire, the fifth-stage wire and the second cable are respectively connected with the digital quantity input device, and the digital quantity input device is used for collecting on-off information of the first cable, the first-stage wire, the second-stage wire, the third-stage wire, the fourth-stage wire, the fifth-stage wire and the second cable.
Further, the data processing component further comprises an intelligent processing device, a digital quantity output device and an audible and visual alarm device, the digital quantity input device, the intelligent processing device, the digital quantity output device and the audible and visual alarm device are sequentially connected, the digital quantity input device comprises parallel ports 1 to 12, data information acquired by the digital quantity input device is transmitted in a digital quantity signal mode, the data information is analyzed by the intelligent processing device and then is output to the audible and visual alarm device by the digital quantity output device, the intelligent processing device can adopt a Programmable Logic Controller (PLC) control system, namely a programmable logic controller, the PLC control system is an electronic device specially designed for industrial production and operated by digital operation, for the invention, a program can be edited and stored in the PLC control system in advance so as to process input data information, the digital quantity output device can transmit the output information to the audible and visual alarm device, the audible and visual alarm device can adopt a temperature audible and visual alarm device which is relatively mature in the prior art, and can send out audible and visual signals to people at high danger places at the same time.
Further, the audible and visual alarm device comprises a molten iron channel erosion prediction device, a molten iron channel erosion 1-level alarm device, a molten iron channel erosion 2-level alarm device, a molten iron channel erosion 3-level alarm device, a molten iron channel erosion 4-level alarm device and a molten iron channel erosion through leakage alarm device, wherein a molten iron rod collects molten iron channel erosion condition information, the molten iron erosion condition information is transmitted into an intelligent processing device (such as a PLC) in a digital quantity signal mode, after the molten iron erosion condition information is analyzed by the intelligent processing device, a result is output to the audible and visual alarm device in a digital quantity mode through a digital quantity output device (DO module is adopted by the digital quantity output device), namely, after the input obtained data information is subjected to the intelligent processing device, an alarm signal obtained through processing is output to the audible and visual alarm device, audible and visual alarm of corresponding level is carried out, and relevant personnel are prompted to take countermeasures in time.
Further, the first cable is a temperature sensing cable, a first steel wire and a second steel wire are arranged in the first cable, the two steel wires are mutually insulated to form an open circuit in a normal state, the first steel wire is wrapped with a first insulating layer, and the second steel wire is wrapped with a second insulating layer; the first cable is a temperature-sensing cable, the temperature-sensing cable has a fixed alarm temperature value according to the model, the monitoring temperature of the temperature-sensing cable is lower than the temperature of a fusing point of an aluminum wire, a No. 7 port in No. 1 to No. 12 ports of the digital quantity input equipment is connected with the first steel wire, a No. 8 port in No. 1 to No. 12 ports of the digital quantity input equipment is connected with the second steel wire, and when the temperature under a refractory material layer of a molten iron channel rises to the temperature of the fusing point of the first cable, the connection states of the No. 7 port and the No. 8 port are changed from broken to open; and the port No. 7 and the port No. 8 are connected with the molten iron runner erosion prediction equipment through the intelligent processing equipment and the digital quantity output equipment.
Further, a port No. 5 and a port No. 9 in the ports No. 1 to No. 12 of the digital quantity input device are connected with the first-stage wire, the first-stage wire is an aluminum wire, and when the temperature under the refractory material layer of the molten iron runner is increased to the temperature of the fusing point of the first-stage wire, the connection state of the port No. 5 and the port No. 9 is changed from on to off; the No. 5 port and the No. 9 port are connected with the molten iron runner erosion 1-level alarm device through the intelligent processing device and the digital quantity output device, because the fusion point of the first-level wire is lowest, the first-level wire adopts an aluminum medium wire, the fusion point is 660 ℃, when the molten iron runner is eroded to a certain program, but no leakage is generated, the first-level wire is fused at first, the signal between the No. 5 terminal and the No. 9 terminal of the digital quantity input device (the digital quantity input device adopts a DI module) is changed from on to off, and after the intelligent processing device receives the state change, the state change is prompted to erode the 1-level alarm of the molten iron runner through the audible-visual alarm device.
Further, a port 4 and a port 10 in the ports 1 to 12 of the digital quantity input device are connected with the second-stage wire, the second-stage wire is a copper wire, and when the temperature under the refractory material layer of the molten iron runner is increased to the temperature of the fusing point of the second-stage wire, the connection state of the port 4 and the port 10 is changed from on to off; the No. 4 port and the No. 10 port are connected with the iron runner erosion 2-level alarm device through the intelligent processing device and the digital quantity output device, when molten iron continues to erode the iron runner, the temperature under the refractory material layer of the iron runner is gradually increased, when the temperature reaches the fusing point of the second-level wire, the second-level wire is fused, the fusing point is 1083 ℃ by adopting a copper medium wire, signals between the No. 4 and No. 10 terminals of the digital quantity input device (the digital quantity input device adopts a DI module) are changed from on to off, and after the intelligent processing device receives the state change, the intelligent processing device prompts the iron runner erosion 2-level alarm by the acousto-optic alarm device.
Further, a port No. 2 and a port No. 12 in the ports No. 1 to 12 of the digital quantity input device are connected with the third-stage lead, the third-stage lead is a manganese lead, and when the temperature under the refractory material layer of the molten iron runner is increased to the temperature of the fusing point of the third-stage lead, the connection state of the port No. 2 and the port No. 12 is changed from on to off; the No. 2 port and the No. 12 port are connected with the iron runner erosion 3-level alarm device through the intelligent processing device and the digital quantity output device, when the temperature under the iron runner refractory material layer is increased to the fusing point (1244 ℃) of the third-level wire, the third-level wire is fused, the manganese wire is selected as the fusing point, the signal between the No. 2 terminal and the No. 12 terminal of the digital quantity input device (the digital quantity input device adopts a DI module) is changed from on to off, and after the intelligent processing device receives the state change, the intelligent processing device prompts the iron runner erosion 3-level alarm through the audible-visual alarm device.
Further, a port 3 and a port 11 in the ports 1 to 12 of the digital quantity input device are connected with the fourth-stage wire, the fourth-stage wire is a nickel wire, and when the temperature under the refractory material layer of the molten iron runner is increased to the temperature of the fusing point of the fourth-stage wire, the connection state of the port 3 and the port 11 is changed from on to off; the No. 3 port and the No. 11 port are connected with the molten iron runner erosion 4-level alarm device through the intelligent processing device and the digital quantity output device, when the temperature under the molten iron runner refractory material layer reaches a fourth-level fusing point, the fourth-level fusing point of the fourth-level fusing wire is a nickel wire, the fusing point is 1453 ℃, signals between the No. 3 and 11 terminals of the digital quantity input device (the digital quantity input device adopts a DI module) are changed from on to off, and after the intelligent processing device receives the state change, the state change is prompted to erode the 4-level molten iron runner alarm through the acousto-optic alarm device.
Further, a 6-grade port in the 1-12-grade ports of the digital quantity input device is connected with the fifth-grade wire, the fifth-grade wire is an iron wire, a 1-grade port in the 1-12-grade ports of the digital quantity input device is connected with the iron rod, when the temperature under the refractory material layer of the iron runner rises to the melting point temperature of the fifth-grade wire, the iron wire is conducted with the iron rod, and the connection state of the 1-grade port and the 6-grade port is changed from off to on; the No. 1 port is connected with the No. 6 port through the intelligent processing equipment and the digital quantity output equipment, the iron wire is selected as the fifth-stage wire, the fusion point of the fifth-stage wire is 1535 ℃, when molten iron is corroded to penetrate through the refractory material layer, the iron rod is conducted with the fifth-stage wire, namely the iron wire, under the environment of the molten iron, so that signals between the No. 1 and 6 terminals of the digital quantity equipment (the digital quantity input equipment adopts a DI module) are changed from 'off' to 'on', and after the intelligent processing equipment receives the state change, the audible and visual alarm equipment prompts the iron wire to penetrate through the corrosion.
As shown in fig. 2 and fig. 3, the present invention further provides another system for detecting the erosion degree of the hot metal runner based on the cable fusing characteristics, the system is provided with two sets of devices for detecting the erosion degree of the hot metal runner based on the cable fusing characteristics, the hot metal runner is divided into a left hot metal runner and a right hot metal runner based on the middle line at the bottom of the hot metal runner, wherein a part of each level of wires of one set of devices and a part of a first cable are distributed and buried under refractory material layers at the side surface and the bottom of the left hot metal runner in an S shape or in a wavy shape or in a sinusoidal shape, a part of each level of wires of the other set of devices and a part of the first cable are distributed and buried under refractory material layers at the side surface and the bottom of the right hot metal runner in an S shape or in a sinusoidal shape, and the main functions of the conductors and cables are distributed and buried in an S shape or in an S shape so as to cover the detection position as far as possible, and simultaneously, a corresponding erosion alarm is not caused to each other short circuit, so as to be sent out, as shown in fig. 4, the whole devices can be accurately detected by the temperature data of the two sets of the hot metal runner can be accurately set in the two sets of the hot metal runner, and the full temperature can only be accurately detected in the two sets of the hot metal runner, and the full temperature can be completely detected in the two sets of the water can be completely and only by the full set up in the condition that the temperature is only according to the temperature condition to the temperature measurement condition, and the temperature measurement condition can be accurately. Two sets of devices for detecting the erosion degree of the molten iron runner based on the cable fusing characteristics can be arranged for the device, so that the erosion degree of the molten iron runner on two sides can be compared.
Adopt the technical scheme of the device (detection device for short) that detects the molten iron runner erosion degree based on cable fusing characteristic, can let this device possess following technical effect: the method realizes automatic and on-line monitoring of the corrosion condition of the molten iron runner, and can accurately discover the corrosion phenomena of the molten iron runner at different degrees and give corresponding alarms. Compared with the existing detection method, the method reduces the workload and the dangerousness of site workers. The invention has the advantages of low input cost and convenient maintenance, and only needs to replace the first cable and wires of different materials.
One embodiment according to the invention is as follows:
1. preparation and installation of a detection device:
1. as shown in fig. 1, the preparation of the detection apparatus includes:
the device comprises a first cable (unrecoverable, constant temperature type), an aluminum wire, a copper wire, a manganese wire, a nickel wire, an iron rod, a second cable, a digital quantity input device (the digital quantity input device adopts a DI module), a digital quantity output device (the digital quantity output device adopts a DO module), an intelligent processing device and an audible and visual alarm device, and the devices are checked to ensure that the device can adapt to the normal operation of the field environment.
2. As shown in fig. 2 and 3, the installation of the detection device includes:
step1, through the long-term on-site detection result, the molten iron is found to enter the molten iron runner from the blast furnace tap hole, and the molten iron runner is frequently and seriously corroded, so that the first cable, the aluminum wire, the copper wire, the manganese wire, the nickel wire and the iron wire are buried under refractory material layers at the left side, the right side and the bottom of the molten iron injection molten iron runner, and are paved according to an S shape, so that the temperature sensing range covers all positions of the detection position as much as possible, and meanwhile, the purpose of mutual short circuit after heating is avoided. Their terminals are connected by common wires to a digital input device (the digital input device employs a DI module).
Step2, installing an iron rod on the upper surface side of the refractory material of the molten iron runner, penetrating into the bottom of the molten iron runner, and connecting to a digital quantity input device (the digital quantity input device adopts a DI module) through a common lead.
Step3, digital quantity input equipment (the digital quantity input equipment adopts a DI module), intelligent processing equipment, digital quantity output equipment (the digital quantity output equipment adopts a DO module), and audible and visual alarm equipment can be installed in an operation room and connected with a first cable, an aluminum conductor, a copper conductor, a manganese conductor, a nickel conductor and an iron conductor under the iron rod and the molten iron channel through a second cable.
Step4, the intelligent processing equipment is simply programmed to realize input signal processing and alarm signal output.
In the steps, the corrosion condition information of the molten iron runner is collected through a first cable, an aluminum wire, a copper wire, a manganese wire, a nickel wire, an iron wire and an iron rod, is transmitted into intelligent processing equipment (such as a PLC) in a digital quantity signal mode, is analyzed by the intelligent processing equipment, and then outputs a result in a digital quantity mode to an audible and visual alarm through digital quantity output equipment (the digital quantity output equipment adopts a DO module), so that audible and visual alarm of corresponding level is carried out, and relevant personnel are prompted to take countermeasures in time.
The first cable (non-recoverable, constant temperature type) is composed of two steel wires insulated by heat-sensitive materials, each steel wire is covered with a layer of insulating material, under normal state, the two steel wires are mutually insulated to form an open circuit, when the ambient temperature under the refractory material layer of the molten iron channel rises to a preset action temperature, the temperature-sensitive materials are broken, and the two steel wires generate a short circuit.
Wherein, the aluminum wire, the copper wire, the manganese wire, the nickel wire and the iron wire have fixed fusion points respectively (aluminum wire: 660 ℃, copper wire: 1083 ℃, manganese wire: 1244 ℃, nickel wire: 1453 ℃, iron wire: 1535 ℃). In the initial state, the aluminum wire, the copper wire, the manganese wire and the nickel wire are in a short circuit state from head to tail, and when the ambient temperature rises to the temperature of the fusing points, the wires are fused, so that the short circuit is changed into an open circuit state.
When the refractory material layer is corroded and leaked, molten iron contacts the iron wire, and the state of the iron wire is changed from the open circuit state to the short circuit state.
2. Detection and alarm process
When the iron runner erosion degree aggravates gradually, first cable and aluminium conductor, copper conductor, manganese conductor, nickel conductor, iron conductor buried under its refractory material layer will take place state change in proper order and input intelligent processing equipment according to the temperature characteristics of difference respectively to arouse the warning of each erosion level:
1. according to the model of the first cable, a fixed alarm temperature value is provided, the monitoring temperature of the first cable is lower than the fusion point temperature of the aluminum conductor, when the corrosion of the molten iron runner reaches a certain degree, the environment temperature of the first cable below the refractory material layer exceeds the alarm temperature value, so that the temperature-sensing insulating layer wrapped outside the steel wires is damaged, and the two steel wires are short-circuited. The signal output between the terminals 7 and 8 of the digital quantity input device (the digital quantity input device adopts a DI module) is changed from 'off' to 'on', and after the intelligent processing device receives the state change, the intelligent processing device prompts the prediction of the iron runner erosion through an audible and visual alarm device.
2. Among other wires, because the melting point of the aluminum wire is the lowest (660 ℃), when the molten iron runner is corroded to a certain program, but no penetration is generated, the aluminum wire is fused first, signals between terminals 5 and 9 of a digital quantity input device (the digital quantity input device adopts a DI module) are changed from on to off, and after the intelligent processing device receives the state change, the audible and visual alarm device prompts that the molten iron runner is corroded to a level 1 alarm.
3. When molten iron continues to erode the molten iron runner, the temperature under the refractory material layer of the molten iron runner is gradually increased, and when the temperature reaches a copper wire fusing point (1083 ℃), the fusing of the copper wire is caused, signals between the terminals 4 and 10 of the digital quantity input equipment (the digital quantity input equipment adopts a DI module) are changed from on to off, and after the intelligent processing equipment receives the state change, the audible and visual alarm equipment prompts the molten iron runner to erode a level 2 alarm.
4. When the temperature under the refractory material layer of the molten iron runner rises to the fusing point (1244 ℃) of the manganese conductor, the manganese conductor is fused, signals between the No. 2 and No. 12 terminals of the digital input device (the digital input device adopts a DI module) are changed from on to off, and after the intelligent processing device receives the state change, the intelligent processing device prompts a molten iron runner to erode a 3-level alarm through the audible and visual alarm device.
5. When the temperature under the refractory material layer of the molten iron channel reaches the fusing point (1453 ℃) of the nickel lead, the nickel lead is fused, signals between the terminals 3 and 11 of the digital quantity input device (the digital quantity input device adopts a DI module) are changed from on to off, and after the intelligent processing device receives the state change, the audible and visual alarm device prompts the molten iron channel to erode the 4-level alarm.
6. When molten iron is corroded to penetrate through the refractory material layer, the molten iron can not be fused by the molten iron because of higher fusing point (1535 ℃), the molten iron can pass through the molten iron and is conducted with an iron rod arranged on the upper surface side of the refractory material of the molten iron runner, so that signals between terminals 1 and 6 of digital quantity equipment (the digital quantity input equipment adopts a DI module) are changed from off to on, and after the intelligent processing equipment receives the state change, an audible and visual alarm device prompts the molten iron runner to erode through leakage alarm.
According to the specific embodiment, the device for detecting the corrosion degree of the molten iron runner based on the cable fusing characteristics can automatically and on-line monitor the corrosion condition of the molten iron runner, can accurately discover the corrosion phenomena of the molten iron runner at different degrees, can give corresponding alarms, and can prompt operators to take countermeasures in time so as to avoid serious production and safety accidents.
It should be understood that the specific order or hierarchy of steps in the processes disclosed are examples of exemplary approaches. Based on design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged without departing from the scope of the present disclosure. The accompanying method claims present elements of the various steps in a sample order, and are not meant to be limited to the specific order or hierarchy presented.
In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, invention lies in less than all features of a single disclosed embodiment. Thus the following claims are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate preferred embodiment of this invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. As will be apparent to those skilled in the art; various modifications to these embodiments will be readily apparent, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, as used in the specification or claims, the term "comprising" is intended to be inclusive in a manner similar to the term "comprising," as interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean "non-exclusive or".
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (1)
1. The system is characterized by comprising two sets of devices for detecting the erosion degree of the molten iron runner based on the cable fusing characteristics, wherein the molten iron runner is divided into a left molten iron runner and a right molten iron runner by taking the central line of the bottom of the molten iron runner as a reference, the middle part of each level of wires of one set of devices and the middle part of a first cable are buried under the refractory material layers of the side surface and the bottom of the left molten iron runner in an S shape, and the middle part of each level of wires of the other set of devices and the middle part of the first cable are buried under the refractory material layers of the side surface and the bottom of the right molten iron runner in an S shape;
the device comprises: a fusing part, a connecting part, and a data processing part;
the fuse component includes: the device comprises a first cable, a first-stage wire, a second-stage wire, a third-stage wire, a fourth-stage wire and a fifth-stage wire, wherein the first-stage wire, the second-stage wire, the third-stage wire, the fourth-stage wire and the fifth-stage wire are connected in parallel and the fusion points rise in sequence, the fusion point of the first cable is lower than the fusion point of the first-stage wire, and each fusion component extends into the position below a refractory material layer at one side of the molten iron channel and a refractory material layer at the bottom of the molten iron channel from the top of the molten iron channel respectively, and then extends out of the molten iron channel from the top of the molten iron channel; a first steel wire and a second steel wire which are parallel are arranged in the first cable, the first steel wire is wrapped with a first insulating layer, and the second steel wire is wrapped with a second insulating layer;
the connecting component comprises an iron rod and a second cable which are connected with each other, the bottom end of the iron rod penetrates into the bottom of the molten iron channel, the iron rod is arranged on a refractory material at the bottom of the molten iron channel, and one end of the second cable is connected with the top end of the iron rod;
the data processing part comprises a digital quantity input device, wherein a first steel wire and a second steel wire in the first cable, a first-stage wire, a second-stage wire, a third-stage wire, two ends of a fourth-stage wire, a fifth-stage wire and the other end of the second cable are respectively connected with the digital quantity input device.
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