CN111154935A - Device and system for detecting corrosion degree of molten iron runner based on cable fusing characteristic - Google Patents
Device and system for detecting corrosion degree of molten iron runner based on cable fusing characteristic Download PDFInfo
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- CN111154935A CN111154935A CN202010008601.2A CN202010008601A CN111154935A CN 111154935 A CN111154935 A CN 111154935A CN 202010008601 A CN202010008601 A CN 202010008601A CN 111154935 A CN111154935 A CN 111154935A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- 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
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
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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 cable fusing characteristic, wherein the detection device comprises: a fusing part, a connecting part, and a data processing part; the fusing part 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 fusing points sequentially rise; the connecting part comprises an iron rod and a second cable which are connected with each other; the data processing means comprises a digital quantity input device. The technical scheme has the following beneficial effects: the method can realize automatic and online monitoring of the erosion condition of the molten iron runner, can accurately discover the erosion phenomenon of the molten iron runner in different degrees, can timely remind operators to take countermeasures, avoids major safety accidents, and ensures the normal operation of blast furnace production.
Description
Technical Field
The invention relates to the field of blast furnace smelting operation in ferrous metallurgy, in particular to a device and a system for detecting the erosion degree of a molten iron runner based on the cable fusing characteristic.
Background
When the blast furnace is cast, high-temperature molten iron is injected into the molten iron tank through the molten iron runner. In the process, the refractory material layer of the molten iron runner is continuously eroded by the high-temperature erosion and scouring of the molten iron, so that the refractory material layer of the molten iron runner is gradually thinned to the through hole, and the molten iron further continuously erodes other layers below the refractory material layer until the molten iron is burnt through the blast furnace tapping platform to cause molten iron leakage. The phenomenon is easy to cause serious safety accidents of personnel and equipment, and has great threat to personnel, rails, tank cars and other equipment under the platform, and the normal production of the blast furnace is also seriously influenced. Therefore, the method can detect and forecast the erosion condition of the molten iron runner in time and give an alarm, thereby not only facilitating the operators to take countermeasures in time and preventing accidents, but also having guiding significance for the safe and stable operation of blast furnace production.
At present, the corrosion condition of the molten iron runner is detected by manually holding a metal rod, probing into the bottom of the molten iron runner and scratching along the bottom of the runner, and judging whether pits formed by corrosion exist or not and the depth of the pits only by manual experience. The method consumes manpower, the detection result completely depends on the experience judgment of operators, the misjudgment and the missed judgment are easily caused, and the potential safety hazard of production exists because workers need to be close to the molten iron ditch.
In summary, how to safely, accurately and effectively detect the erosion degree of the molten iron runner is a big problem to be solved at present.
Disclosure of Invention
The invention provides a device and a system for detecting the erosion degree of an iron runner based on the cable fusing characteristic, and aims to solve the problems of low efficiency and unsafe detection process in the original detection process.
In order to solve the above technical problems, embodiments of the present invention provide an apparatus for detecting erosion degree of a molten iron runner based on a cable fusing characteristic,
the device comprises: a fusing part, a connecting part, and a data processing part;
the fusing part includes: the fusing part includes: the fuse 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, a fusing point sequentially rises, the fusing point of the first cable is lower than that of the first-stage wire, and the fusing parts respectively extend into the positions, on one side of the molten iron channel, below the refractory material layer on the bottom of the molten iron channel from the top of the molten iron channel;
the connecting part comprises an iron rod and a second cable which are connected with each other, the iron rod extends into the bottom of the molten iron ditch, and the bottom end of the iron rod is arranged on a refractory material at the bottom of the molten iron ditch;
the data processing part comprises digital quantity input equipment, and the first cable, the first-stage lead, the second-stage lead, the third-stage lead, the fourth-stage lead, the fifth-stage lead and the second cable are respectively connected with the digital quantity input equipment.
Furthermore, the data processing part also comprises intelligent processing equipment, digital quantity output equipment and acousto-optic alarm equipment, wherein the digital quantity input equipment, the intelligent processing equipment, the digital quantity output equipment and the acousto-optic alarm equipment are sequentially connected, the digital quantity input equipment comprises No. 1 to No. 12 ports which are parallel, data information acquired by the digital quantity input equipment is transmitted in a digital quantity signal mode, and is output to the acousto-optic alarm equipment through the digital quantity output equipment after being analyzed by the intelligent processing equipment.
Further, the sound and light alarm device comprises a molten iron ditch erosion forecasting device, a molten iron ditch erosion 1-level alarm device, a molten iron ditch erosion 2-level alarm device, a molten iron ditch erosion 3-level alarm device, a molten iron ditch erosion 4-level alarm device and a molten iron ditch erosion leakage alarm device.
Furthermore, a first steel wire and a second steel wire are arranged inside the first cable, a first insulating layer wraps the first steel wire, and a second insulating layer wraps the second steel wire; a No. 7 port of the No. 1 to No. 12 ports of the digital input equipment is connected with the first steel wire, a No. 8 port of the No. 1 to No. 12 ports of the digital input equipment is connected with the second steel wire, and when the temperature of the refractory material layer of the molten iron runner rises to the temperature of a melting 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 No. 7 port and the No. 8 port are connected with the molten iron ditch erosion forecasting device through the intelligent processing device and the digital output device.
Furthermore, a port 5 and a port 9 of the ports 1 to 12 of the digital quantity input equipment are connected with the first-stage conducting wire, the first-stage conducting wire is an aluminum conducting wire, and when the temperature of the refractory material layer of the molten iron channel rises to the temperature of a melting point of the aluminum conducting wire, the connection state of the port 5 and the port 9 is changed from on to off; and the No. 5 port and the No. 9 port are connected with the molten iron ditch corrosion level 1 alarm device through the intelligent processing device and the digital output device.
Furthermore, a port 4 and a port 10 of the ports 1 to 12 of the digital quantity input device are connected with the second-stage conducting wire, the second-stage conducting wire is a copper conducting wire, and when the temperature of the refractory material layer of the molten iron runner rises to the melting point temperature of the copper conducting wire, the connection state of the port 4 and the port 10 is changed from on to off; and the No. 4 port and the No. 10 port are connected with the molten iron ditch erosion 2-level alarm device through the intelligent processing device and the digital output device.
Furthermore, a port 2 and a port 12 of the ports 1 to 12 of the digital quantity input device are connected with the third-stage conducting wire, the third-stage conducting wire is a manganese conducting wire, and when the temperature of the refractory material layer of the molten iron runner rises to the melting point temperature of the manganese conducting wire, the connection state of the port 2 and the port 12 is changed from on to off; and the No. 2 port and the No. 12 port are connected with the molten iron ditch erosion 3-level alarm device through the intelligent processing device and the digital output device.
Furthermore, a port 3 and a port 11 of the ports 1 to 12 of the digital quantity input device are connected with the fourth-stage conducting wire, the fourth-stage conducting wire is a nickel conducting wire, and when the temperature of the refractory material layer of the molten iron runner rises to the melting point temperature of the nickel conducting 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 ditch corrosion 4-level alarm device through the intelligent processing device and the digital output device.
Furthermore, 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, the port 1 of the ports 1 to 12 is connected with the iron rod, when the temperature of the refractory material layer of the molten iron runner rises to the temperature of a melting point 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 ditch corrosion leakage-penetrating alarm device through the intelligent processing device and the digital output device.
Further, a system for detecting the erosion degree of the molten iron runner based on the cable fusing characteristic 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 characteristic as claimed in claim 1, the central line at the bottom of the molten iron runner is taken as a reference, the molten iron runner is divided into a left molten iron runner and a right molten iron runner, one part of each level of wires and one part of each first cable of one set of devices are S-shaped and buried under the fireproof material layers at the side and the bottom of the left molten iron runner, and one part of each level of wires and one part of each first cable of the other set of devices are S-shaped and buried under the fireproof material layers at the side and the bottom of the right molten iron runner.
The invention aims to overcome the defects of the prior art, and provides a method for detecting the corrosion degree of an iron runner based on the cable fusing characteristic, and the method can be used for timely finding the corrosion degree of the iron runner and giving an alarm to prompt an operator to take a countermeasure, thereby avoiding the occurrence of major production safety accidents and ensuring the normal operation of blast furnace production. According to different melting points of the temperature sensing cable and the leads (aluminum, copper, manganese, nickel and iron) made of different materials, the temperature sensing cable is arranged on the lower layer of the refractory material at the position where the molten iron runner is frequently eroded, the degree of the molten iron runner eroded is detected according to the on-off conditions of the leads at different temperatures, an alarm is given, related personnel are prompted to take corresponding measures in time, and the normal production of the blast furnace is guaranteed.
The technical scheme has the following beneficial effects: according to the invention, according to the long-term detection result of the erosion position of the molten iron runner on site, the temperature sensing cable and other metal materials for fixing the melting point are laid under the refractory material layer at the position frequently and seriously eroded by molten iron, and the change of the on-off of signals of the temperature sensing cable and other metal materials under different erosion degrees of the molten iron runner is detected, so that the automatic and on-line monitoring of the erosion condition of the molten iron runner is realized, and meanwhile, the occurrence of the erosion phenomenon of the molten iron runner at different degrees can be accurately found, and a corresponding alarm is given. Compared with the existing detection method, the method has the advantages that the workload and the danger of field workers are reduced, operators can be reminded to take corresponding measures in time, major production and safety accidents are avoided, normal production of the blast furnace is guaranteed, in addition, the investment cost is low, the maintenance is convenient, and only the first cable and the lead wires made of different materials need to be replaced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the layout of the apparatus for detecting the erosion degree of a molten iron runner based on the cable fusing characteristics according to the present invention.
FIG. 2 is a schematic layout view of a three-dimensional structure of a left-side molten iron runner of the device for detecting the erosion degree of the molten iron runner based on the cable fusing characteristic of the invention.
FIG. 3 is a schematic layout view of the three-dimensional structure of the right-side molten iron runner of the device for detecting the erosion degree of the molten iron runner based on the cable fusing characteristic of the invention.
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 according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to overcome the defects of the prior art, and provides a method for detecting the corrosion degree of an iron runner based on the cable fusing characteristic, and the method can be used for timely finding the corrosion degree of the iron runner and giving an alarm to prompt an operator to take a countermeasure, thereby avoiding the occurrence of major production safety accidents and ensuring the normal operation of blast furnace production.
As shown in fig. 1, an embodiment of the present invention provides an apparatus for detecting an erosion degree of a molten iron runner based on a cable fusing characteristic, where the apparatus includes: a fusing part, a connecting part, and a data processing part;
the fusing part includes: the cable comprises a first cable, a first-level wire, a second-level wire, a third-level wire, a fourth-level wire and a fifth-level wire, wherein the first-level wire, the second-level wire, the third-level wire, the fourth-level wire and the fifth-level wire are connected in parallel, the melting points of the first cable are sequentially increased, and the melting points of the first cable are lower than the melting points of the first-level wire. The fusing part extends into the refractory material layer at one side of the molten iron runner and the refractory material layer at the bottom from the top of the molten iron runner respectively, and then extends out of the molten iron runner from the top of the molten iron runner, or the middle parts of the first cable, the first-stage lead, the second-stage lead, the third-stage lead, the fourth-stage lead and the fifth-stage lead are embedded under the fireproof material layer at one side of the molten iron ditch and the fireproof material layer at the bottom, two ends of the first cable, the first-stage lead, the second-stage lead, the third-stage lead, the fourth-stage lead and the fifth-stage lead extend out of the top of the molten iron ditch, the middle parts of the first cable of the fusing part and the leads at all levels are distributed below the fireproof material layers at the side and the bottom of the molten iron runner in an S shape or a wave shape or a sine curve shape, so that the molten iron runner is covered as comprehensively as possible, and comprehensive data of the molten iron runner are obtained.
The connecting part comprises an iron rod and a second cable which are connected with each other, the iron rod is inserted into the bottom of the molten iron ditch, and the bottom end of the iron rod is arranged on the refractory material at the bottom of the molten iron ditch. The data processing part comprises digital quantity input equipment, the first cable, the first-stage lead, the second-stage lead, the third-stage lead, the fourth-stage lead, the fifth-stage lead and the second cable are respectively connected with the digital quantity input equipment, and the digital quantity input equipment is used for collecting on-off information of the first cable, the first-stage lead, the second-stage lead, the third-stage lead, the fourth-stage lead, the fifth-stage lead and the second cable.
Furthermore, the data processing component also comprises an intelligent processing device, a digital quantity output device and an acousto-optic alarm device, the digital quantity input device, the intelligent processing device, the digital quantity output device and the acousto-optic alarm device are sequentially connected, the digital quantity input device comprises ports from No. 1 to No. 12 which are parallel, data information acquired by the digital quantity input device is transmitted in a digital quantity signal mode, and is analyzed by the intelligent processing device and then is output to the acousto-optic alarm device by the digital quantity output device, wherein the intelligent processing device can adopt a PLC control system, namely a programmable logic controller, the PLC control system is an electronic device specially designed for industrial production and used for digital operation, and 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 equipment transmits the output information to the sound-light alarm equipment, wherein the sound-light alarm equipment can adopt a relatively mature temperature sound-light alarm instrument in the prior art, the temperature sound-light alarm instrument is often used in some high-risk places, and the temperature sound-light alarm instrument can simultaneously send out sound and light alarm signals and send out warning signals to people.
Further, the sound and light alarm device comprises an iron runner erosion forecasting device, an iron runner erosion 1-level alarm device, an iron runner erosion 2-level alarm device, an iron runner erosion 3-level alarm device, an iron runner erosion 4-level alarm device and an iron runner erosion leakage-through alarm device, wherein the iron rod collects the iron runner erosion condition information, the iron runner erosion condition information is transmitted into the intelligent processing device (such as a PLC) in a digital quantity signal mode, and after the iron runner erosion 3-level alarm device is analyzed by the intelligent processing device, a result is output to the sound and light alarm device in a digital quantity mode through the digital quantity output device (the digital quantity output device adopts a DO module), namely after the input obtained data information passes through the intelligent processing device, the processed alarm signal is output to the sound and light alarm device, sound and light alarm of a corresponding level is performed, and related personnel are prompted to take corresponding measures in time.
Furthermore, the first cable is a temperature sensing cable, a first steel wire and a second steel wire are arranged inside the first cable, the two steel wires are mutually insulated to form an open circuit in a normal state, a first insulating layer wraps the first steel wire, and a second insulating layer wraps the second steel wire; the first cable is a temperature sensing cable, the temperature sensing cable has a fixed alarm temperature value according to the type, the monitoring temperature is lower than the temperature of a melting point of an aluminum wire, a No. 7 port of a No. 1 to No. 12 port of the digital input device is connected with the first steel wire, a No. 8 port of the No. 1 to No. 12 port of the digital input device is connected with the second steel wire, and when the temperature of the refractory material layer of the molten iron channel rises to the temperature of the melting 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 No. 7 port and the No. 8 port are connected with the molten iron ditch erosion forecasting device through the intelligent processing device and the digital output device.
Furthermore, a port 5 and a port 9 of the ports 1 to 12 of the digital quantity input equipment are connected with the first-stage conducting wire, the first-stage conducting wire is an aluminum conducting wire, and when the temperature of the refractory material layer of the molten iron runner rises to the temperature of a melting point of the first-stage conducting wire, the connection state of the port 5 and the port 9 is changed from on to off; the No. 5 port and the No. 9 port are connected with the molten iron ditch erosion 1-level alarm device through the intelligent processing device and the digital quantity output device, because the melting point of the first-level wire is the lowest, the first-level wire adopts an aluminum medium wire, and the melting point is 660 ℃, when the molten iron ditch erodes to a certain program but does not pass through and leak, the first-level wire is firstly fused, the signal between the No. 5 and No. 9 terminals 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 audible and visual alarm device prompts the molten iron ditch erosion 1-level alarm.
Furthermore, a port 4 and a port 10 of the ports 1 to 12 of the digital quantity input device are connected with the second-stage conducting wire, the second-stage conducting wire is a copper conducting wire, and when the temperature of the refractory material layer of the molten iron runner rises to the temperature of a melting point of the second-stage conducting 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 molten 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 molten iron runner, the temperature of the refractory material layer of the molten iron runner gradually rises, when the temperature reaches the melting point of the second-level conducting wire, the second-level conducting wire is fused, the melting point is 1083 ℃, the signal between the No. 4 and No. 10 terminals 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 molten iron runner erosion 2-level alarm through the audible and visual alarm device.
Furthermore, a port 2 and a port 12 of the ports 1 to 12 of the digital quantity input device are connected with the third-stage conducting wire, the third-stage conducting wire is a manganese conducting wire, and when the temperature of the refractory material layer of the molten iron runner rises to the temperature of a melting point of the third-stage conducting wire, the connection state of the port 2 and the port 12 is changed from on to off; the No. 2 port and the No. 12 port are connected with the molten iron runner erosion 3-level alarm device through the intelligent processing device and the digital quantity output device, when the temperature of the refractory material layer of the molten iron runner rises to a fusing point (1244 ℃) of a third-level wire, the third-level wire is fused, the fusing point is 1244 ℃, a signal between No. 2 and No. 12 terminals 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 molten iron runner erosion 3-level alarm through the audible and visual alarm device.
Furthermore, a port 3 and a port 11 of the ports 1 to 12 of the digital quantity input device are connected with the fourth-stage conducting wire, the fourth-stage conducting wire is a nickel conducting wire, and when the temperature of the refractory material layer of the molten iron runner rises to the melting point temperature of the fourth-stage conducting 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 refractory material layer of the molten iron runner reaches a fourth-level melting point, the fourth-level wire is caused to be fused and selected from a nickel wire, the melting point is 1453 ℃, a signal between the No. 3 and No. 11 terminals 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 molten iron runner erosion 4-level alarm through the audible and visual alarm device.
Furthermore, a port 6 of the ports 1 to 12 of the digital input device is connected to the fifth-stage wire, the fifth-stage wire is an iron wire, the port 1 of the ports 1 to 12 of the digital input device is connected to the iron rod, when the temperature of the refractory material layer of the iron runner rises to the temperature of the melting point of the fifth-stage 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; the No. 1 port and the No. 6 port are connected with the iron runner erosion penetration alarm device through the intelligent processing device and the digital quantity output device, an iron wire is selected as a fifth-level wire, the melting point of the iron wire is 1535 ℃, when the molten iron erodes to penetrate through the fireproof material layer, the molten iron penetrates to the bottom of the fireproof material layer, the iron rod is communicated with the fifth-level wire, namely the iron wire, in the environment of the molten iron, so that the signal between the No. 1 and No. 6 terminals of the digital quantity 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 iron runner erosion penetration alarm through the audible and visual alarm device.
As shown in fig. 2 and 3, the present invention further provides another system for detecting the erosion degree of an iron runner based on the cable fusing characteristic, the system is provided with two sets of devices for detecting the erosion degree of the iron runner based on the cable fusing characteristic, the iron runner is divided into a left iron runner and a right iron runner based on the center line of the bottom of the iron runner, wherein a part of each level of wires and a part of a first cable of one set of devices are distributed and embedded under the refractory material layer on the side surface and the bottom of the left iron runner in an S-shaped or wavy or sinusoidal shape, a part of each level of wires and a part of a first cable of the other set of devices are distributed and embedded under the refractory material layer on the side surface and the bottom of the right iron runner in an S-shaped or wavy or sinusoidal shape, and the main functions of the distribution and the embedding of each wire and cable in an S-shaped or wavy or sinusoidal shape are that the temperature sensing range is covered at each detection position as much as possible, meanwhile, the purpose of short circuit among heated iron runners can not be caused, so that corresponding corrosion alarms can be timely sent out, as shown in fig. 4, the three-dimensional structure diagram of the whole device can show that a set of device for detecting the corrosion degree of the iron runners based on the cable fusing characteristic is required to be respectively arranged on the left side and the right side of the iron runners. The two sets of devices for detecting the erosion degree of the molten iron runner based on the cable fusing characteristic can be arranged oppositely, so that the erosion degrees of the molten iron runners on two sides can be favorably compared.
The technical scheme of the device for detecting the erosion degree of the molten iron runner (detection device for short) based on the cable fusing characteristic is adopted, so that the device has the following technical effects: the method realizes automatic and on-line monitoring of the erosion condition of the molten iron runner, can accurately find the occurrence of erosion phenomena of the molten iron runner in different degrees, and gives corresponding alarm. Compared with the existing detection method, the method reduces the workload and the danger of field workers. The cable can remind operators to take corresponding measures in time, avoids serious production and safety accidents, is low in investment cost and convenient to maintain, and only needs to replace the first cable and the lead made of different materials.
One embodiment based on the present invention is as follows:
firstly, 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 (non-recoverable, constant temperature type), an aluminum conductor, a copper conductor, a manganese conductor, a nickel conductor, an iron rod, a second cable, a digital input device (the digital input device adopts a DI module), a digital output device (the digital output device adopts a DO module), an intelligent processing device and an acousto-optic alarm device, and the device is 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 apparatus includes:
step1, finding that molten iron enters the molten iron runner from the blast furnace taphole through the long-term on-site detection result, and the molten iron runner is frequently and seriously eroded, so that the first cable, the aluminum lead, the copper lead, the manganese lead, the nickel lead and the iron lead are all embedded under the refractory material layers at the left side, the right side and the bottom of the molten iron injection molten iron runner, and are laid according to an S shape, so that the purposes that the temperature sensing range covers all positions of the detection position as much as possible and short circuit among heated molten iron is avoided are achieved. Their outlets are connected to a digital input device (which employs a DI module) by common wires.
Step2, installing an iron rod on the upper surface side of the refractory material of the iron runner, extending into the bottom of the iron runner, and connecting to a digital input device (the digital input device adopts a DI module) through a common lead.
Step3, digital input equipment (the digital input equipment adopts a DI module), intelligent processing equipment, digital output equipment (the digital output equipment adopts a DO module), and sound and light alarm equipment can be installed in an operation room and are connected with an iron bar, a first cable under a molten iron ditch, an aluminum lead, a copper lead, a manganese lead, a nickel lead and an iron lead through a second cable.
And Step4, simply programming the intelligent processing equipment to realize input signal processing and alarm signal output.
In the steps, the corrosion condition information of the molten iron ditch is collected through the first cable, the aluminum lead, the copper lead, the manganese lead, the nickel lead, the iron lead and the iron rod, is transmitted into intelligent processing equipment (such as PLC) in a digital quantity signal mode, and is analyzed by the intelligent processing equipment, and the result is output to an acousto-optic alarm instrument in a digital quantity mode through digital quantity output equipment (the digital quantity output equipment adopts a DO module) to carry out acousto-optic alarm of a corresponding level, so that related personnel are prompted to take corresponding measures in time.
The first cable (non-recoverable, constant temperature type) is composed of two steel wires insulated by heat-sensitive materials, a layer of insulating material is wrapped outside each steel wire, the two steel wires are mutually insulated to form an open circuit in a normal state, and when the ambient temperature under the refractory material layer of the molten iron runner 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 respectively have fixed fusing points (the aluminum wire is 660 ℃, the copper wire is 1083 ℃, the manganese wire is 1244 ℃, the nickel wire is 1453 ℃ and the iron wire is 1535 ℃). In the initial state, the heads and the tails of the aluminum conductor, the copper conductor, the manganese conductor and the nickel conductor are in a short circuit state, and when the ambient temperature rises to the temperature of the melting points of the aluminum conductor, the copper conductor, the manganese conductor and the nickel conductor, the conductors are fused, so that the short circuit state is changed into an open circuit state.
The iron lead and the lead connected with the iron rod are in an open circuit state in a normal state, and when the refractory material layer is corroded and penetrates through the refractory material layer, molten iron contacts the iron lead and is changed from the open circuit state to a short circuit state.
Second, detection and alarm process
When the iron runner degree of erosion aggravated gradually, first cable and aluminium matter wire, copper wire, manganese matter wire, nickel matter wire, the iron wire buried under its refractory material layer will be according to the temperature characteristic of difference separately, take place the change of state in proper order and input intelligent processing equipment to arouse the warning of each erosion level:
1. the first cable has a fixed alarm temperature value according to the type, the monitoring temperature of the first cable is lower than the temperature of a melting point of the aluminum conductor, and when the molten iron channel is corroded to a certain degree, the environment temperature of the first cable under 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 No. 7 and No. 8 terminals of digital quantity input equipment (the digital quantity input equipment adopts a DI module) is changed from 'off' to 'on', and after the intelligent processing equipment receives the state change, the intelligent processing equipment prompts the iron runner erosion forecast through sound and light alarm equipment.
2. Among other wires, because the melting point of the aluminum wire is the lowest (660 ℃), when the molten iron ditch is corroded to a certain program but no leakage occurs, the aluminum medium wire is firstly fused, a signal between No. 5 and No. 9 terminals of digital input equipment (the digital input equipment adopts a DI module) is changed from 'on' to 'off', and after the intelligent processing equipment receives the state change, the intelligent processing equipment prompts 1-level alarm of molten iron ditch corrosion through sound and light alarm equipment.
3. When molten iron continues to corrode the molten iron runner, the temperature below the refractory material layer of the molten iron runner gradually rises, when the temperature reaches a copper wire melting point (1083 ℃), the copper wire is fused, a signal between terminals No. 4 and No. 10 of a digital input device (the digital 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 2-level alarm of molten iron runner corrosion through sound and light alarm equipment.
4. When the temperature below the refractory material layer of the molten iron runner rises to a melting point (1244 ℃) of a manganese conducting wire, the manganese conducting wire is fused, a signal between terminals No. 2 and No. 12 of a digital input device (the digital 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 3-level alarm of molten iron runner erosion through sound and light alarm equipment.
5. When the temperature under the refractory material layer of the molten iron runner reaches the melting point (1453 ℃) of the nickel wire, the nickel wire is fused, a signal between terminals No. 3 and No. 11 of digital input equipment (the digital input equipment adopts a DI module) is changed from 'on' to 'off', and after the intelligent processing equipment receives the state change, the intelligent processing equipment prompts 4-level alarm of molten iron runner erosion through sound and light alarm equipment.
6. When molten iron erodes through the refractory material layer, the melting point of the iron wire is high (1535 ℃), the iron wire cannot be fused by the molten iron, the iron wire can be conducted with an iron rod arranged on the upper surface side of the refractory material of the iron runner through the molten iron, signals between terminals 1 and 6 of a digital quantity device (the digital quantity input device adopts a DI module) are changed from 'off' to 'on', and after the intelligent processing device receives the state change, the intelligent processing device prompts the iron runner to erode through and leak alarms through an audible and visual alarm device.
According to the specific embodiment, the device for detecting the erosion degree of the molten iron runner based on the cable fusing characteristic can automatically monitor the erosion condition of the molten iron runner on line, can accurately find the erosion phenomenon of the molten iron runner in different degrees, gives an alarm correspondingly, can timely remind an operator to take countermeasures, and avoids serious production and safety accidents.
It should be understood that the specific order or hierarchy of steps in the processes disclosed is an example of exemplary approaches. Based upon 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 intended 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 the detailed description, with each claim standing on its own as a separate preferred embodiment of the 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. 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.
What has been described above 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, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is 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 a "non-exclusive or".
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A device for detecting the erosion degree of a molten iron runner based on the cable fusing characteristic is characterized in that,
the device comprises: a fusing part, a connecting part, and a data processing part;
the fusing part includes: the fuse component extends into the position below the fireproof material layer on one side of the molten iron runner and the fireproof material layer on the bottom of the molten iron runner from the top of the molten iron runner respectively, and then extends out of the molten iron runner from the top of the molten iron runner;
the connecting component comprises an iron rod and a second cable which are connected with each other, the bottom end of the iron rod extends into the bottom of the molten iron ditch, the iron rod is arranged on a refractory material at the bottom of the molten iron ditch, and the second cable is connected to the top end of the iron rod;
the data processing part comprises digital quantity input equipment, and the first cable, the first-stage lead, the second-stage lead, the third-stage lead, the fourth-stage lead, the fifth-stage lead and the second cable are respectively connected with the digital quantity input equipment.
2. The apparatus according to claim 1, wherein the data processing unit further comprises an intelligent processing device, a digital output device, and an audible and visual alarm device, the digital input device, the intelligent processing device, the digital output device, and the audible and visual alarm device are sequentially connected to each other, the digital input device includes ports 1 to 12, and data information acquired by the digital input device is transmitted as digital signals and is output to the audible and visual alarm device through the digital output device after being analyzed by the intelligent processing device.
3. The apparatus for detecting molten iron runner erosion degree based on cable fusing characteristics as claimed in claim 2, wherein said audible and visual alarm device comprises a molten iron runner erosion prediction device, a molten iron runner erosion level 1 alarm device, a molten iron runner erosion level 2 alarm device, a molten iron runner erosion level 3 alarm device, a molten iron runner erosion level 4 alarm device and a molten iron runner erosion leakage alarm device.
4. The device for detecting the erosion degree of the molten iron runner based on the fusing property of the cable as claimed in claim 2, wherein a first steel wire and a second steel wire are arranged in parallel 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 of the No. 1 to No. 12 ports of the digital input equipment is connected with the first steel wire, a No. 8 port of the No. 1 to No. 12 ports of the digital input equipment is connected with the second steel wire, and when the temperature of the refractory material layer of the molten iron runner rises to the temperature of a melting 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 No. 7 port and the No. 8 port are connected with the molten iron ditch erosion forecasting device through the intelligent processing device and the digital output device.
5. The apparatus for detecting the erosion degree of the molten iron runner based on the fusing characteristic of the cable as claimed in claim 2, wherein the No. 5 port and the No. 9 port of the No. 1 to No. 12 ports of the digital input device are connected with the first-stage conducting wire, the first-stage conducting wire is an aluminum conducting wire, and when the temperature of the refractory material layer of the molten iron runner rises to the melting point temperature of the aluminum conducting wire, the connection state of the No. 5 port and the No. 9 port is changed from on to off;
and the No. 5 port and the No. 9 port are connected with the molten iron ditch corrosion level 1 alarm device through the intelligent processing device and the digital output device.
6. The apparatus for detecting the erosion degree of the molten iron runner based on the fusing characteristic of the cable as claimed in claim 2, wherein the port 4 and the port 10 of the ports 1 to 12 of the digital input device are connected with the second-stage conducting wire, the second-stage conducting wire is a copper conducting wire, and when the temperature of the refractory material layer of the molten iron runner rises to the fusing point temperature of the copper conducting wire, the connection state of the port 4 and the port 10 is changed from on to off;
and the No. 4 port and the No. 10 port are connected with the molten iron ditch erosion 2-level alarm device through the intelligent processing device and the digital output device.
7. The apparatus for detecting the erosion degree of the molten iron runner based on the fusing characteristic of the cable as claimed in claim 2, wherein the No. 2 port and the No. 12 port of the No. 1 to No. 12 ports of the digital input device are connected with the third-stage conducting wire, the third-stage conducting wire is a manganese conducting wire, and when the temperature of the refractory material layer of the molten iron runner rises to the fusing point temperature of the manganese conducting wire, the connection state of the No. 2 port and the No. 12 port is changed from on to off;
and the No. 2 port and the No. 12 port are connected with the molten iron ditch erosion 3-level alarm device through the intelligent processing device and the digital output device.
8. The apparatus for detecting the erosion degree of the molten iron runner based on the fusing property of the cable according to claim 2, wherein the port 3 and the port 11 of the ports 1 to 12 of the digital input device are connected with the fourth-stage conducting wire, the fourth-stage conducting wire is a nickel conducting wire, and when the temperature of the refractory material layer of the molten iron runner rises to the fusing point temperature of the nickel conducting 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 ditch corrosion 4-level alarm device through the intelligent processing device and the digital output device.
9. The apparatus for detecting the erosion degree of the molten iron runner based on the cable fusing characteristic as claimed in claim 2, wherein the port 6 of the ports 1 to 12 of the digital input device is connected to the fifth-stage wire, the fifth-stage wire is a ferrous wire, the port 1 of the ports 1 to 12 is connected to the ferrous rod, when the temperature below the refractory material layer of the molten iron runner rises to the fusing point temperature of the ferrous wire, the ferrous wire is conducted with the ferrous 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 ditch corrosion leakage-penetrating alarm device through the intelligent processing device and the digital output device.
10. A system for detecting the corrosion degree of a molten iron runner based on cable fusing characteristics is characterized by comprising two sets of devices according to claim 1, wherein the devices are based on the cable fusing characteristics and used for detecting the corrosion degree of the molten iron runner, the center line of the bottom of the molten iron runner is taken as a reference, the molten iron runner is divided into a left molten iron runner and a right molten iron runner, the middle parts of all levels of wires of one set of devices and the middle part of a first cable are S-shaped and buried under the fireproof material layers of the side surface and the bottom of the left molten iron runner, and the middle parts of all levels of wires of the other set of devices and the middle part of the first cable are S-shaped and buried under the fireproof material layers of the side surface and the bottom of the right molten iron runner.
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