CN218620902U

CN218620902U - Blast furnace iron runner erosion early warning device

Info

Publication number: CN218620902U
Application number: CN202222865889.2U
Authority: CN
Inventors: 许远超; 张三华; 魏昌晟; 李志刚; 秦红彬; 陈卢; 贾庆伟; 郑书航; 刘勇
Original assignee: Sinosteel Luoyang Institute of Refractories Research Co Ltd
Current assignee: Sinosteel Luoyang Institute of Refractories Research Co Ltd
Priority date: 2022-10-29
Filing date: 2022-10-29
Publication date: 2023-03-14
Anticipated expiration: 2032-10-29

Abstract

The utility model belongs to the technical field of blast furnace iron runner production, a blast furnace iron runner corrodes early warning device is proposed. The blast furnace iron runner erosion early warning device comprises a metal wire mesh which is laid between an iron runner permanent lining and a working lining in advance, wherein the laying length of the metal wire mesh is equal to the length of the iron runner working lining, and the laying width of the metal wire mesh is equal to the distance from the bottom of the iron runner working lining to a slag line; the metal probe is arranged on the upper part of the iron runner in an overhead mode or is embedded at the bottom of the iron runner in advance; a real-time monitor for monitoring the change conditions of the resistance and the current in the circuit in real time is arranged between the metal probe rod and the metal wire mesh; the real-time monitor is communicated with the metal wire mesh and the metal probe rod through leads to form a circuit breaking circuit, or the metal wire mesh is contacted with molten iron when exposed after a working lining is corroded and is communicated with the metal probe rod and the real-time monitor through leads to form a circuit breaking circuit. The utility model can quickly and effectively early warn the erosion state of the working lining of the iron runner, and effectively ensure the safe operation of blast furnace tapping.

Description

Blast furnace iron runner erosion early warning device

Technical Field

The utility model belongs to the technical field of blast furnace iron runner production, concretely relates to blast furnace iron runner corrodes early warning device.

Background

The blast furnace iron runner is important equipment for guiding molten iron and separating slag iron in the blast furnace tapping process and consists of a steel structure, a permanent lining and a working lining; in the tapping operation process, the working lining is directly contacted with molten iron, and is subjected to thermal shock impact of discontinuous tapping and erosion of high-temperature slag iron, and the thickness of the working lining is continuously reduced, so that the safe tapping operation is endangered; therefore, the key for guaranteeing the blast furnace tapping safety operation is to timely and effectively judge the erosion degree of the working lining of the iron runner; the existing blast furnace iron runner corrosion monitoring mode is that temperature monitoring and appearance monitoring are matched; the temperature monitoring is to monitor the temperature in real time through a temperature sensor arranged on the side wall of the iron runner, and to alarm when the monitored temperature exceeds an early warning temperature threshold; the appearance monitoring is to artificially observe the working lining state of the iron runner in the blast furnace blowing-out operation interval and judge the corrosion state of the iron runner according to experience. The defects of the temperature monitoring mode are as follows: the early warning temperature threshold value caused by the thickness and the heat conductivity coefficient of the differentiated iron runner castable is difficult to set; the defects of the appearance monitoring mode are as follows: the judgment is incomplete due to the fact that one-sidedness and experience of manual observation are insufficient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a blast furnace iron runner corrodes early warning device can judge blast furnace iron runner erosion state according to the monitoring value of resistance and electric current, quick effectual realization erosion early warning.

The utility model adopts the following technical proposal for completing the above purposes:

a blast furnace iron runner erosion early warning device is provided with a wire mesh which is laid between an iron runner permanent lining and a working lining in advance; the laying length of the metal wire mesh is equal to the length of the working lining of the iron runner, and the laying width is equal to the distance from the bottom of the working lining of the iron runner to the position of a slag line; the blast furnace iron runner corrosion early warning device is also provided with a metal feeler lever which is arranged on the upper part of the iron runner in an overhead manner or is embedded at the bottom of the iron runner in advance; a real-time monitor for monitoring the change conditions of the resistance and the current in the circuit in real time is arranged between the metal probe rod and the metal wire mesh; the real-time monitor is communicated with the wire mesh and the metal probe rod through leads to form a circuit breaking circuit, or the wire mesh is contacted with molten iron when exposed after a working lining is corroded and is communicated with the metal probe rod and the real-time monitor through leads to form a circuit breaking circuit; the alarm is triggered by the real-time monitor.

The outside of the metal probe rod is provided with a corundum sleeve.

The real-time monitor consists of a resistance measuring instrument, a current sensor and a power supply; the alarm is communicated with the real-time monitor and sends out corrosion early warning according to the real-time monitoring condition of the resistance and the current.

The utility model provides a pair of blast furnace iron runner corrodes early warning device adopts above-mentioned technical scheme, can realize quick effective early warning iron runner work lining erosion state, effective blast furnace tapping safety work of guaranteeing obstacles.

Drawings

FIG. 1 is a schematic view of a blast furnace iron runner erosion warning device of the present invention;

fig. 2 is a schematic view of the metal probe rod of the present invention;

FIG. 3 is a schematic diagram of the real-time monitor of the present invention;

FIG. 4 is a schematic view of an embodiment 2 of the blast furnace iron runner erosion warning device of the present invention.

In the figure: 1. the device comprises an iron runner permanent lining, 2 an iron runner working lining, 3 a wire mesh, 4 a metal probe rod, 5 a real-time monitor, 6 an alarm, 7 a metal probe wire, 8 a corundum sleeve, 9 a resistance measuring instrument, 10 a current sensor, 11 and a power supply.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.

As shown in figure 1, the blast furnace iron runner corrosion early warning device consists of four parts, namely a wire mesh 3, a metal feeler lever 4, a real-time monitor 5 and an alarm 6; the wire mesh 3 is made of stainless steel such as 304, 316 and the like, the wire diameter is not more than 1mm, the pore diameter is not more than 3mm, the wire mesh is laid between the iron runner permanent lining 1 and the iron runner working lining 2 in advance, the laying length is equal to the length of the iron runner working lining 2, and the laying width is equal to the distance from the bottom of the iron runner working lining 2 to the position of a slag line.

The metal probe rod 4 is composed of the metal probe wire 7 and the corundum sleeve 8, the metal probe wire 7 is made of stainless steel such as 304, 316 and 310S, and the wire diameter is not larger than 2mm. The metal wire 7 is nested in the corundum sleeve 8, the front end of the metal wire extends out by 5-20mm and is contacted with molten iron.

The wire mesh 3, the metal probe rod 4 and the real-time monitor 5 are communicated through a lead to form an open circuit, the resistance value in the circuit is infinity, and the current value is 0.

The real-time monitor 5 is composed of the resistance measuring instrument 9 and the current sensor 10, is arranged in an open circuit formed by communicating the metal wire mesh 3 and the metal probe rod 4, and monitors the change conditions of resistance and current in the open circuit in real time. The iron runner working lining 2 is corroded to crack or thin, so that when the metal wire mesh 3 is locally exposed and leaked to be contacted with molten iron, the open circuit forms a path, the resistance value in the loop is reduced to form current, the resistance measuring instrument 9 and the current sensor 10 record indicating values and simultaneously trigger the alarm 6 to send out blast furnace iron runner corrosion early warning.

The alarm 6 is an audible and visual alarm.

Example 1:

as shown in fig. 1, after the casting construction of the iron runner permanent lining 1 is completed, the wire mesh 3 is laid on the two side surfaces of the iron runner permanent lining 1 in a flat manner, the laying length of the wire mesh 3 is equal to the length of the iron runner working lining 2, and the laying width is equal to the distance from the bottom of the iron runner working lining 2 to the slag line position. And after the metal wire mesh 3 is laid, the pouring construction of the iron runner working lining 2 is continuously finished.

The metal probe rod 4 is arranged on the upper part of the iron runner in an overhead mode and is communicated with the wire mesh 3 and the real-time monitor 5 through a lead to form a circuit breaker.

When the working lining of the iron runner is corroded, seriously damaged and damaged to the extent that the part of the metal wire mesh 3 is exposed, the circuit breaking circuit is communicated by molten iron to form a passage, and the real-time monitor 5 triggers the alarm 6 to send out an early warning of the corrosion of the iron runner.

Example 2:

as shown in fig. 4, the wire 3 laying structure is the same as that of embodiment 1. The metal probe rod 4 is embedded at the bottom of the iron runner in advance and is communicated with the wire mesh 3 and the real-time monitor 5 through a lead to form a circuit breaker.

Claims

1. The utility model provides a blast furnace iron runner corrodes early warning device which characterized in that: the blast furnace iron runner corrosion early warning device is provided with a wire mesh which is laid between an iron runner permanent lining and a working lining in advance; the laying length of the metal wire mesh is equal to the length of the working lining of the iron runner, and the laying width is equal to the distance from the bottom of the working lining of the iron runner to the position of a slag line; the blast furnace iron runner corrosion early warning device is also provided with a metal feeler lever which is arranged at the upper part of the iron runner in an overhead way or is embedded at the bottom of the iron runner in advance; a real-time monitor for monitoring the change condition of resistance and current in the circuit in real time is arranged between the metal probe rod and the metal wire mesh; the real-time monitor is communicated with the wire mesh and the metal probe rod through leads to form a circuit breaking circuit, or the wire mesh is contacted with molten iron when exposed after a working lining is corroded and is communicated with the metal probe rod and the real-time monitor through leads to form a circuit breaking circuit; the alarm is triggered by the real-time monitor.

2. The blast furnace iron runner erosion warning device of claim 1, characterized in that: the outside of the metal probe rod is provided with a corundum sleeve, and a metal probe wire is nested inside the corundum sleeve.

3. The blast furnace iron runner erosion warning device of claim 1, characterized in that: the real-time monitor consists of a resistance measuring instrument, a current sensor and a power supply; the alarm is communicated with the real-time monitor and sends out corrosion early warning according to the real-time monitoring condition of the resistance and the current.