A device for measuring the depth of erosion of a lining of an intermediate frequency furnace

Abstract

The utility model relates to a kind of intermediate frequency furnace lining erosion pit depth measuring device, including two same settings measuring arms, multiple through holes are provided on the measuring arm, the through hole on two measuring arms from top to bottom one-to-one corresponding constitutes multiple groups, two measuring arms are hinged in one group of through hole, the top of measuring arm is provided with clamping slot. This intermediate frequency furnace lining erosion pit depth measuring device is simple and convenient to operate when measuring. By adjusting zoom scale, the same measuring device can be used to measure different sizes of intermediate frequency furnace or ladle, detect erosion pit size, more practical.

Description

Technical Field

[0001] This utility model relates to the field of medium-frequency furnace maintenance technology, and in particular to a device for measuring the depth of pitting corrosion in the furnace lining of a medium-frequency furnace. Background Technology

[0002] The erosion condition of the induction furnace lining is closely related to safety during the smelting process. Smelting personnel must pay close attention to the erosion condition of the lining. In the middle and later stages of the lining's life, the smelting status should be observed periodically, monitoring the furnace's maximum melting power, current, and the movement of the molten iron. If necessary, the molten iron should be emptied and the furnace shut down for inspection. Existing measurement methods are relatively complex, costly, or difficult to implement.

[0003] Therefore, a device for measuring the depth of pitting corrosion in the lining of a medium-frequency furnace is needed to solve the above-mentioned technical problems. Utility Model Content

[0004] This utility model addresses the technical problems existing in the prior art by providing a device for measuring the depth of pitting corrosion in the lining of a medium-frequency furnace.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A medium-frequency furnace lining erosion pit depth measuring device includes two identical measuring arms. The measuring arms are provided with multiple through holes. The through holes on the two measuring arms correspond one-to-one from top to bottom to form multiple sets. The two measuring arms are hinged at one set of through holes. The top of the measuring arm is provided with a slot.

[0006] Preferably, in the above-mentioned medium-frequency furnace lining erosion pit depth measuring device, the bottom of the slot is provided with a slope, and the lower end of the slope is located on the side where the two measuring arms are close to each other.

[0007] Preferably, in the above-mentioned medium-frequency furnace lining erosion pit depth measuring device, the lower ends of the two measuring arms are provided with sharp corners on the sides that are far apart from each other.

[0008] Preferably, in the above-mentioned medium-frequency furnace lining erosion pit depth measuring device, handrails are fixed on the sides of the upper ends of the two measuring arms that are far apart from each other.

[0009] Preferably, in the above-mentioned medium-frequency furnace lining erosion pit depth measuring device, clamping blocks are fixed on both sides of the inner side wall of the slot, and the clamping blocks are elastic elements.

[0010] Preferably, in the above-mentioned medium-frequency furnace lining erosion pit depth measuring device, the clamping blocks are made of rubber, and the side of the clamping blocks that is close to each other is arc-shaped.

[0011] Preferably, in the above-mentioned medium-frequency furnace lining erosion pit depth measuring device, a hand-tightening bolt is inserted into the through hole at the hinge of the two measuring arms. The front end of the hand-tightening bolt is provided with a threaded post. A washer, a spring, and a nut are sleeved on the outside of the threaded post. The spring is located between the washer and the nut.

[0012] The beneficial effects of this utility model are as follows: During measurement, the measuring device is first kept closed, and the pointed end of the measuring device is vertically inserted into the furnace body. When the end of the device is horizontal with the area to be measured, the device is opened so that the pointed end of the device is in close contact with the pit. Another operator places a ruler in the slot and reads the scale at both ends of the slot, i.e., the reading of the ruler at the upper end of the slope. The difference between the two readings is calculated, and the distance between the two pointed ends is calculated according to the set scale. Then, the inner diameter of the medium-frequency furnace is subtracted to obtain the pit depth value. The operation is simple and convenient. By adjusting the scaling ratio, the same measuring device can be used to measure medium-frequency furnaces or ladles of different sizes to detect the size of pits. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the card slot of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the measuring scale of this utility model being placed in the slot;

[0016] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;

[0017] Figure 5 This is a schematic diagram of the installation structure for hand-tightened bolts.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1. Measuring arm No. 1, 2. Measuring arm No. 2, 3. Through hole, 4. Sharp corner, 5. Handrail, 6. Slot, 7. Hand-tightening bolt, 8. Clamping block, 9. Inclined slope, 10. Ruler, 11. Washer, 12. Spring, 13. Nut. Detailed Implementation

[0020] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0021] like Figures 1-5As shown, a device for measuring the depth of pitting corrosion in the lining of a medium-frequency furnace includes two identical measuring arms, namely measuring arm 1 and measuring arm 2. Multiple through holes 3 are provided on the measuring arms, and the through holes 3 on the two measuring arms correspond one-to-one from top to bottom to form multiple sets for coordinated use. A proportion is marked at each through hole 3, which represents the segmented proportion of the length of the measuring arm at both ends of the measuring hole. The two measuring arms are hinged at one set of through holes 3. A hand-tightening bolt 7 is inserted into the through hole at the hinge point of the two measuring arms. The front end of the hand-tightening bolt 7 is provided with a threaded post. A washer 11, a spring 12, and a nut 13 are sleeved on the outside of the threaded post. The spring 12 is located between the washer 11 and the nut 13. By tightening the nut 13, pressure is applied to the spring 12. The elastic force of the spring 12 causes the washer 11 to apply pressure to the measuring arm, making the two measuring arms fit tightly together. This pressure can be adjusted by adjusting the position of the nut 13, ensuring that the two measuring arms fit tightly while also allowing for smooth relative rotation. The top of the measuring arm 2 is provided with a slot 6.

[0022] Furthermore, the bottom of the slot 6 is provided with a ramp 9, and the lower end of the ramp 9 is located on the side where the two measuring arms are close to each other. The lower ends of the two measuring arms, which are far apart from each other, are provided with sharp corners 4, which facilitates the measurement of tiny pits on the furnace lining. During measurement, the measuring device is first kept closed, and one end of the measuring device with a sharp corner 4 is vertically inserted into the furnace body. When the end of the device is horizontal with the area to be measured, the device is opened so that the end of the sharp corner 4 is in close contact with the pit, and it is ensured that the line connecting the two points of contact passes through the central axis of the induction furnace. Another operator places a scale 10 in the slot 6 and reads the scale at both ends of the slot 6, that is, the reading of the scale 10 at the upper end of the ramp 9. The difference between the two readings is calculated, and the distance between the ends of the two sharp corners 4 is calculated according to the set scale. Then, the inner diameter of the induction furnace is subtracted to obtain the pit depth value.

[0023] The ramp 9 is designed to ensure that the scale 10 can accurately read the readings at both ends of the slot. Furthermore, the proportional value marked at each through hole 3 is the proportional value after the total length from the top of the ramp 9 to the sharp corner 4 is divided into two segments by the through hole 3. This proportional value facilitates the quick calculation of the distance between the ends of the two sharp corners 4.

[0024] The multiple sets of through holes can be set in a suitable proportion according to the size of the medium frequency furnace during use, preventing the measurement arm length and opening from being relatively large at the furnace mouth of some models of medium frequency furnaces, which would increase the difficulty of measurement.

[0025] Handrails 5 are fixed to the upper ends of the two measuring arms 2 on the opposite sides for easy use. Clamping blocks 8 are fixed to the inner side walls of the slot 6. The clamping blocks 8 are elastic elements. The clamping blocks 8 are made of rubber, and the side of the clamping blocks 8 that is close to each other is arc-shaped. After the scale 10 is placed in the slot 6, it can be kept in a stable state by the clamping action of the clamping blocks 8, and the reading can be taken without manual support.

[0026] This measuring device can be used at high temperatures. By adjusting the scaling ratio (by installing the hand-tightening bolt 7 into the through hole 3 at other different ratios), the same measuring device can be used to measure medium-frequency furnaces or ladles of different sizes and detect the size of corrosion pits.

[0027] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. An apparatus for measuring the depth of erosion of a furnace lining of an intermediate frequency furnace, characterised in that: It includes two identical measuring arms, each measuring arm having multiple through holes (3). The through holes (3) on the two measuring arms correspond one-to-one from top to bottom to form multiple sets. The two measuring arms are hinged at one of the sets of through holes (3). The top of the measuring arm (2) has a slot (6).

2. The intermediate frequency furnace lining erosion pit depth measuring device according to claim 1, characterized in that: The bottom of the slot (6) is provided with a ramp (9), and the lower end of the ramp (9) is located on the side where the two measuring arms are close to each other.

3. The intermediate frequency furnace lining erosion pit depth measuring device according to claim 1, characterized in that: The lower ends of the two measuring arms are each provided with a sharp corner (4) on the side that is far apart from each other.

4. The intermediate frequency furnace lining erosion pit depth measuring device according to claim 1, characterized in that: Handrails (5) are fixed to the upper ends of the two measuring arms (2) on opposite sides.

5. The intermediate frequency furnace lining erosion pit depth measuring device according to claim 1, characterized in that: Clamping blocks (8) are fixed on both sides of the inner side wall of the slot (6), and the clamping blocks (8) are elastic elements.

6. The intermediate frequency furnace lining erosion pit depth measuring device according to claim 5, characterized in that: The clamping blocks (8) are made of rubber, and the side of the clamping blocks (8) that are close to each other is arc-shaped.

7. The intermediate frequency furnace lining erosion pit depth measuring device according to claim 1, characterized in that: A hand-tightening bolt (7) is inserted into the through hole at the hinge of the two measuring arms. The front end of the hand-tightening bolt (7) is provided with a threaded post. A washer (11), a spring (12), and a nut (13) are sleeved on the outside of the threaded post. The spring (12) is located between the washer (11) and the nut (13).

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