CN107617724A - A kind of ladle lining fireproof material deteriorates situation online test method and device - Google Patents

Abstract

The invention discloses an on-line detection method and device for the corrosion of refractory materials lining a steel ladle. Composed of software and console; when testing, turn on the industrial camera to monitor the position of the ladle, adjust the laser ranging sensor to align with the upper edge of the inner side of the ladle through the console and control software, turn on the automatic test function, and the laser ranging sensor is driven by the rotating control device. The corrosion of the refractory material lining the ladle can be obtained by testing the thickness change of the ladle lining. The device can be used to monitor the change of the thickness of the ladle lining refractory material online, so as to grasp the corrosion of the lining refractory material and ensure the safe operation of the ladle; because this method adopts remote and fast measurement, it will not affect the normal operation and use of the ladle , so as to meet the online monitoring of refractory materials lining the ladle.

Description

A method and device for on-line detection of refractory material corrosion in ladle lining

technical field

The invention relates to a ladle lining refractory corrosion detection technology in the field of iron and steel smelting, in particular to an online detection method and device for ladle lining refractory corrosion.

Background technique

In simple terms, a ladle is a container that can store and transport molten steel in the process of iron and steel smelting. The structural composition of the ladle is mainly composed of the shell and the inner lining. The lining of the ladle is mainly composed of three parts. The outermost layer is the insulation layer, which is in contact with the shell of the ladle. The function of the insulation layer is to keep the molten steel warm and reduce the heat loss of the molten steel; The meaning of the layer is that it is not replaced frequently. The permanent layer is inside the insulation layer. The permanent layer plays the role of the main frame of the ladle and plays a vital role in preventing the leakage of molten steel and maintaining the safe operation of the ladle. The innermost layer is the working layer. The refractory layer is in direct contact with molten steel and steel slag during ladle smelting, and is subject to erosion and erosion by molten steel and slag as well as large temperature changes during use. The refractory materials used in the working layer are most susceptible to corrosion, and regular inspection and replacement of this part of the refractory material is required. Material.

Due to the harsh working environment of the ladle, the sharp change of temperature, the erosion of molten steel, etc. will cause the corrosion of the refractory material in the working layer, especially the slag line on the upper edge of the ladle, which is particularly damaged under the erosion of steel slag. The service life of the slag line determines the number of times the ladle is recycled. It is impossible to directly check the corrosion of the ladle lining without affecting production. Therefore, the on-site operator usually observes the corrosion of the refractory lining of the ladle through eyes. , to judge by experience whether the lining refractory material needs to be replaced. However, the temperature of molten steel in the ladle is usually higher than 1600°C. When the refractory lining of the ladle is corroded to a certain extent and is not replaced in time, the high temperature molten steel may cause accidents. However, the inspection based on experience alone has brought hidden dangers to the safe operation of the ladle.

Contents of the invention

In order to grasp the corrosion situation of the refractory material in the ladle lining in time and prevent the risks caused by judging only by experience, the object of the present invention is to provide an online detection method and device for the corrosion situation of the refractory material in the ladle lining, which can be used without affecting production. Quickly test and analyze the corrosion of the ladle lining refractory material under certain conditions, provide a basis for its inspection and replacement, and ensure the safe use of the ladle.

Technical scheme of the present invention is realized in the following manner:

1. An online detection method for the corrosion of refractory materials lining the ladle,

The detection steps are: 1. Use the high-temperature laser ranging sensor (1) to scan the ladle lining refractory point by point in turn, and obtain the lengths of the high-temperature laser ranging sensor and the scanned points (A, B, C) respectively ( OA, OB, and OC) and the included angles (α, β, and γ) with the horizontal direction; Second, the change of the outer wall thickness of the ladle where the scanning point (B, C, A) is located can be obtained through the sine law and the cosine law, so as to obtain Changes in the thickness of different positions can obtain the shape changes of the measured object, so as to grasp the thickness changes of refractory materials in different parts of the ladle lining, and provide parameters for the evaluation of corrosion damage.

The high-temperature laser ranging sensor is a rotating high-temperature laser ranging sensor. When the angle of the high-temperature laser ranging sensor is rotated by 0.1 degrees, at least 100 sets of data are tested.

An online detection device for the corrosion of refractory materials lining the ladle, including a high-temperature laser ranging sensor, an industrial camera, a rotation control device, an electric slide table, a computer and control software, and a console; the electric slide table is equipped with a limit and locking Functional electric slide table.

The rotation control device is a 306-degree rotation control device, the electric slide table is fixedly connected with the 306-degree rotation control device, the 306-degree rotation control device is fixedly connected with the industrial camera, the industrial camera is fixedly connected with the high-temperature laser ranging sensor, and the high-temperature laser measurement The distance sensor is connected to the computer through a data cable, and the computer is fixed on the console. The industrial camera and the high-temperature laser ranging sensor are connected through a data cable and a power cable for data transmission, control and power supply; the industrial camera and the computer are connected through a data cable and a power cable. connection for data transfer, control and power supply.

The control software is a method to control the high-temperature laser ranging sensor and industrial camera to move to a suitable position on the motorized platform, and to control the high-temperature laser ranging sensor and industrial camera to test data according to the set requirements, and finally to collect the collected data After the calculation, it is displayed on the computer in real time for the control software for evaluation.

The positive effect of the present invention is:

The device can be used to monitor the change of the thickness of the ladle lining refractory material online, so as to grasp the corrosion of the lining refractory material and ensure the safe operation of the ladle. Since this method adopts remote and fast measurement, it will not affect the normal operation and use of the ladle , so as to meet the online monitoring of refractory materials lining the ladle.

Description of drawings

Accompanying drawing 1 is the testing principle schematic diagram of testing device of the present invention;

Accompanying drawing 2 is the structural representation of test device of the present invention;

Accompanying drawing 3 is the ladle lining figure that the device of the present invention obtains.

detailed description

The present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings.

Example

From Figure 1, Figure 2, and Figure 3, it can be seen that the online detection device for the corrosion of refractory materials lining the ladle includes HY-LHS2-0060-X high-temperature laser ranging sensor 1, HDMI KP-AF200 high-definition focusing industrial camera 2. Rotation control device 3, SONGSANGSK-02-T electric sliding table 4, computer 5 and control software (please add the function or function of the software) and console 6; the electric sliding table 4 is with limit and lock Functional electric slide, the rotation control device is a 306-degree rotation control device modified from a TP-LINK intelligent network 306-degree rotation camera, the electric slide 4 is fixedly connected to the 306-degree rotation control device 3, and the 306-degree rotation control device is connected to the industrial camera 2 Fixed connection, the industrial camera 2 is fixedly connected with the high temperature laser ranging sensor 1, the high temperature laser ranging sensor 1 is connected with the computer 5 through the data line, and the computer 5 is fixed on the console 6. The industrial camera 2 is connected to the high-temperature laser range sensor 1 through data lines and power lines for data transmission, control and power supply; the industrial camera is connected to the computer through data lines and power lines for data transmission, control and power supply.

In order to show the detection of the refractory corrosion of the steel ladle lining by the online detection device for the corrosion of the refractory lining of the ladle, the picture 3 and the test data obtained by the device during the online operation of the steel ladle in a steel factory were selected for this embodiment As can be seen from Fig. 1 and Fig. 3: the device is placed on the platform near the ladle 8 turret, by treating that the ladle 8 is cast, after the empty ladle is in place, start detection, start the testing software of this testing device, pass The industrial camera 2 monitors, adjusts the measuring head of the high-temperature laser distance measuring sensor 1 so that it is facing the upper edge of the ladle mouth, and then starts the test. After point-by-point scanning of the slag line area 7, the lengths (OA, OB, and OC) and the angles (α , β and γ); Second, the change of the outer wall thickness of the ladle where the scanning point (B, C, A) is located can be obtained through the sine law and the cosine law, so as to obtain the thickness change of different positions. When the angle of the high-temperature laser ranging sensor A set of data is tested every 0.1 degree rotation, and the end of the test is based on the obtained data; the high-temperature laser ranging sensor 1 measures a set of data every 0.1 degree rotation, if the final rotation is 30 degrees, 300 sets of data are measured, and the rotation is 45 degrees Angle, just measure 450 sets of data, and so on. The specific number of measurements is related to the conditions at that time, but at least not less than 100 data; the shape changes of the measured objects can be obtained, so as to grasp the fire resistance of different parts of the ladle lining. The thickness variation of the material;

After the scanning of the measuring head is completed, the computer control software calculates the acquired data according to the test principle shown in Figure 1, and outputs the erosion damage thickness at different points of the ladle, and compares the maximum erosion thickness data with the allowable erosion thickness set by the program , when the actual erosion thickness is less than the allowable erosion thickness, the ladle can still be used; otherwise, the ladle must be off-line for refurbishment. Figure 3 shows the state diagram of the ladle obtained by this device at high temperature. At this time, the temperature of the ladle is relatively high, but the photos obtained by this device can still clearly see the erosion of the refractory material at the inner slag line of the ladle. The obtained data It shows that the slag line is not uniformly eroded, and the maximum erosion thickness is 36mm, which is within the allowable corrosion range of the ladle, and the ladle can still be used.

Claims (5)

1. The situation online test method 1. a kind of ladle lining fireproof material deteriorates,

   Its detecting step is：First, high-temperature laser distance measuring sensor is utilized（1）Ladle lining fireproof material is swept point by point successively After retouching, high-temperature laser distance measuring sensor and scanned point are obtained respectively（A、B、C）Length（OA, OB and OC）And with level The angle in direction（α, β and γ）；2nd, scanning element can be obtained by sine and the cosine law（B、C、A）Outside the ladle of place The change of wall thickness, so as to obtain the thickness change of different loci, you can the pattern change of object being measured is obtained, so as to grasp steel The thickness change of ladle-lining different parts refractory material, to deteriorate, assessment of scenario provides parameter.
2. The situation online test method 2. ladle lining fireproof material according to claim 1 deteriorates, it is characterised in that：High temperature Laser range sensor is a rotation high-temperature laser distance measuring sensor, and the angle of high-temperature laser distance measuring sensor often rotates 0.1 degree Angle, test at least 100 groups of data.
3. The situation on-line measuring device 3. a kind of ladle lining fireproof material deteriorates, including high-temperature laser distance measuring sensor（1）, industry Camera（2）, rotating control assembly（3）, electronic slide unit（4）, computer（5）And control software and console（6）；It is characterized in that： Electronic slide unit is with spacing and locking function electronic slide unit.
4. The situation on-line measuring device 4. the ladle lining fireproof material according to claim deteriorates, it is characterised in that：Rotation Control device（3）It is 306 degree of rotating control assemblies, electronic slide unit（4）With 306 degree of rotating control assemblies（3）It is fixedly connected, 306 Spend rotating control assembly and industrial camera（2）It is fixedly connected, industrial camera（2）With high-temperature laser distance measuring sensor（1）It is fixed to connect Connect, high-temperature laser distance measuring sensor（1）Pass through data wire and computer（5）Connection, computer（5）It is fixed on console 6, industrial phase Machine（2）With high-temperature laser distance measuring sensor（1）Connect so as to data transfer, control with power line by data wire and electricity is provided Source；Industrial camera is connected with computer by data wire and power line, so as to data transfer, control and provides power supply.
5. The situation on-line measuring device 5. the ladle lining fireproof material according to claim 3 or 4 deteriorates, it is characterised in that： Control software is that a kind of control high-temperature laser distance measuring sensor and industrial camera are moved to correct position on motorized platform, and is controlled Preparing high-temp laser range sensor and industrial camera press sets requirement test data, and the data most collected at last are real after computing When be shown on computer, for the control software of judge.