KR960007996Y1 - Rh plant return line slug thickness measurement scale - Google Patents

Abstract

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Description

Hot thickness gauge of RH equipment reflux pipe

1 is a longitudinal sectional view showing the present invention.

Figure 2 is a longitudinal sectional view showing a state of use of the present invention.

3 is a detailed view of portion A of FIG.

4 is a cross-sectional view taken along the line B-B in FIG.

* Explanation of symbols for main parts of the drawings

1: outer pipe 2: triangular support

3: supporting member 4: connecting member

5 inner bar 6 contact piece

9: Flexible Wire 10: Rotating Piece

11: rotating member

The present invention relates to a hot thickness measurer of the RH equipment reflux tube, and more particularly to a hot thickness measurer to accurately measure the internal residual of the refractory in the steelworks RH facility reflux tube at a high temperature of more than 500 ℃.

In steel mill steelmaking process, RH (Ruhrstah1 Henrichshutte and Heraeus) process is used to remove gases such as hydrogen and carbon monoxide from molten steel manufactured in converter and control temperature and composition. The molten steel is immersed in the molten steel in one of the molten steel, and one of the cylindrical reflux tubes is sucked into the vacuum to remove the gas components in the molten steel, and the molten steel is returned to the ladle by the other reflux tube.

Since the inside of the reflux tube is in contact with the hot molten steel and slag, it is lining with refractory.In this case, repair is performed by spraying materials, or the entire internal refractories are removed and reconstructed depending on the level of residual refractory during use. Will be done.

Conventionally, in order to measure the residual level, the RH facility was measured by cooling to room temperature or estimated by the naked eye. However, if the RH facility was repeatedly cooled to room temperature, the refractories embedded in the RH facility were damaged due to thermal shock. Thermal shock damage, called spaling, shortens the campaign life, and requires much time for cooling, thus limiting the smooth use of the equipment.

In addition, when the remaining thickness of the refractory is estimated by the naked eye, it is repaired when there is too much remaining quantity. There was a lot of problems, such as the risk of accidents, such as leakage of molten steel during operation.

The present invention is to solve the above-mentioned problems, the present invention is a hot thickness measurer to accurately measure the internal residual of the refractory in the steelworks RH equipment reflux pipe at a high temperature of more than 500 ℃ to prevent workers from being injured by heat The aim is to provide a hot thickness measurer for the RH equipment reflux tube that can accurately predict the time of repair and repair.

In order to achieve the above object, the present invention is installed on the outer pipe (1) and the triangular support (2) and the support member (3) and the outer pipe (for supporting the control of the height of the outer pipe (1) during the measurement, 1) a connecting member 4 installed in the outer pipe 1 to fix the outer pipe 1, an inner rod 5 inserted into the outer pipe 1 and moving during measurement, and an inner measurement and inner scale measuring rod 7 ( 8), a flexible wire (9) which is connected so as to smoothly move the curved portion of the outer pipe (1), and installed on the outer pipe (1) the inner bar (5) and the internal measurement and internal scale measuring rod (7) (8) is a hot thickness measurer of the RH facility reflux tube consisting of a rotating member (11) rotatably installed to guide the rotating piece 10 to move vertically and horizontally smoothly during measurement.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4 based on the accompanying drawings.

Figure 1 is a longitudinal cross-sectional view showing the present invention, Figure 2 is a longitudinal cross-sectional view showing the state of use of the present invention, Figure 3 is a partial detailed view of Figure 1, Figure 4 is a cross-sectional view taken along line BB of Figure 1, RH equipment Triangular support (2) for adjusting and supporting the height of the outer pipe (1) during the measurement on the lower and upper portions of the c-shaped outer pipe (1) of the hot-thickness gauge for measuring the internal residual of the refractory in the reflux tube And a support member 3 made of ceramic material, and the outer pipe 1 is provided with a plurality of connecting members 4 for fixing the outer pipe 1 with bolts, screws, clamps, and the like.

In addition, an inner rod 5 is inserted into the center of the outer pipe 1, and upper and lower ends of the outer pipe 1 are each made of ceramic material, and the contact pieces 6 which are in contact with each other during measurement are attached to the ends. The measuring rod 7 and the inner scale measuring rod 8 are inserted, between the inner rod 5 and the inner measuring rod 7 in the outer pipe 1, and between the inner rod 5 and the inner scale measuring rod ( 8) are connected to the flexible wire (9) for smoothly moving the curved portion in the outer pipe (1) during the measurement.

In addition, the inner side of the outer pipe 1 is rotatably provided with a rotating piece 10 for guiding the inner rod 5 and the inner measurement and inner scale measuring rods 7 and 8 to move smoothly vertically and horizontally during measurement. The rotating member 11 is provided with a plurality.

The present invention configured as described above shows the internal thickness of the RH facility reflux pipe when the internal thickness is to be measured in the refractory in the RH facility reflux pipe as shown in FIGS. 1 to 4. Insert the inside and adjust the height at the time of measurement as the triangular support (2) installed on the lower part of the outer pipe (1), and then one side of the part to measure the support member (3) installed on the upper part of the outer pipe (1) Fixed to the end, and the inner scale measuring rod 8 inserted at the lower end of the outer pipe 1 is pushed into the outer pipe 1 and attached to the end of the inner measuring rod 7 on the upper end of the outer pipe 1. When the contact piece 6 contacts the other end of the reflux tube, it reads the scale to measure the inner diameter, and then the melted depth and the remaining length of the refractory can be calculated from the difference between the measured inner diameter and the inner diameter after the internal refractory shaft structure.

At this time, the flexible wire 9 between the inner rod 5 and the inner measurement rod 7 in the outer pipe 1 of the hot thickness gauge and between the inner rod 5 and the inner scale measurement rod 8, respectively. ) Is connected so that it is possible to smoothly move the curved portion in the outer pipe (1) during the measurement, the inside of the outer pipe (1) is provided with a rotating member (11) rotatably installed a plurality of rotating pieces (10) Therefore, the inner bar (5) and the inner measurement and inner scale measuring bar (7) (8) during the measurement can be guided to move vertically and horizontally smoothly.

On the other hand, the support member 3 and the contact piece 6 uses a sintered ceramic material such that alumina, zirconia, mullite, etc., have sufficient strength in the use temperature range (500 to 900 ° C) of the present invention. In general, inorganic materials and the like cannot be used because they are deformed in the above operating temperature range, and metals such as iron, copper, and aluminum are deformed due to plastic deformation and oxidized wear, etc. Therefore, it is made of a ceramic material, in particular, the contact portion 6 of the support member 3 should be replaceable when deformation occurs due to slag (Slag).

As described above, the present invention not only accurately measures the refractory residual inside the reflux tube at the hot temperature (500 to 900 ° C.), but also accurately predicts the time for repair and repair, so that the worker to be measured is not injured by heat. This is a very useful design that greatly improves the efficiency and reliability of the device.

Claims (4)

It is installed on the outer pipe (1) is installed in the triangular support (2) and the support member (3), the outer pipe (1) for supporting by adjusting the height of the outer pipe (1) during the measurement and the outer pipe (1) The connecting member 4 to be fixed, the inner rod 5 inserted into the outer pipe 1 and moving during measurement, the inner measurement and inner scale measuring rods 7 and 8, and the outer pipe 1 Flexible wires (9) connected to smoothly move the curved portion, and the outer pipe (1) is installed on the inner bar (5) and the internal measurement and inner scale measuring bar (7) (8) smoothly vertical and horizontal during measurement Hot thickness measurer of the RH facility reflux tube, characterized in that consisting of a rotating member 11 rotatably installed to guide the moving piece 10 RH according to claim 1, characterized in that the flexible wire (9) is connected between the inner bar (5) and the inner measuring bar (7) and between the inner bar (5) and the inner scale measuring bar (8). Hot thickness gauge of equipment reflux pipe. 2. The hot thickness gauge of the RH facility reflux tube according to claim 1, wherein a plurality of said rotating members are provided in the outer pipe. 2. The hot thickness gauge of an RH equipment reflux tube according to claim 1, characterized in that the support member (4) and the contact piece (6) attached to and contacted with the end of the internal measuring rod (7) are made of ceramic material.