Device and method for measuring thickness of ladle working layer

Abstract

The present invention provides a device and method for measuring the thickness of a ladle's working layer, relating to the field of ladle working layer thickness measurement. The device comprises a support rod, the support rod including a working end configured to contact the ladle's permanent layer; a connector disposed on the support rod; an angle a1 between the support rod and the connector, a1 being a complementary angle to the angle a2 between the ladle wall and the vertical direction; a measuring rod disposed on the connector, the measuring rod being parallel to the support rod; a laser emitter coaxially disposed at the lower end of the measuring rod, capable of emitting laser light toward the ladle bottom and generating a light spot; and an adjustable distance from the measuring rod to the support rod; and a scale disposed on the connector. The present invention can replace scanning instruments for measurement, and offers convenient measurement, accurate results, and low investment costs.

Description

Technical Field

[0001] The present invention relates to the field of ladle working layer thickness measurement, and in particular to a ladle working layer thickness measurement device and method. Background Art

[0002] Ladle is also called steel ladle, steel ladle and large bag, etc. It is used to hold molten steel, and the molten steel must be refined in the ladle and other process operations. The ladle is composed of three parts: the outer shell, the lining and the injection control mechanism. The wall of the ladle is inclined inward, and there is an angle a2 between the wall of the ladle and the vertical direction. The lining of the ladle is composed of an insulation layer, a permanent layer and a working layer. The insulation layer is close to the outer wall of the ladle and has a thickness of about 10-15mm. It is mainly used to reduce heat loss and is often built with asbestos boards. In order to prevent the molten steel from burning through the ladle, there is a permanent layer inside the insulation layer, which is about 30 to 60mm thick. The working layer is close to the permanent layer and is in direct contact with the molten steel and slag. It will be directly affected by chemical erosion of the slag and mechanical damage. Mechanical scouring and rapid cooling and heating can easily cause spalling. The life of the ladle is related to the quality of this layer. The first position in the working layer to become thinner is the slag line of the ladle. This position is in contact with molten steel and slag for a long time and is eroded for the longest time. If the thickness of this position is unqualified, it will cause serious accidents such as molten steel penetrating the ladle. When the ladle is taken offline for maintenance, it is necessary to quickly measure the thickness of the working layer at this position to facilitate the discovery of process and material problems. In the existing technology, the method for measuring the thickness of the ladle working layer is to use a fixed or mobile scanning instrument, and calculate the thickness of the ladle working layer by comparing the scanning data with the modeling data. This method is greatly affected by the measurement environment, operation details, etc., and the equipment is expensive to put into use, and the economy is poor.

[0003] Therefore, in view of the current status of the above-mentioned prior art, it is an urgent problem to develop a device and method for measuring the thickness of the ladle working layer. Summary of the Invention

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a device and method for measuring the thickness of the working layer of a ladle, which has convenient measurement, accurate results and low investment cost.

[0005] The present invention solves the above-mentioned technical problems by adopting a technical solution: a device for measuring the thickness of the working layer of a steel ladle, comprising a support rod, the support rod including a working end for contacting the permanent layer of the steel ladle, a connector provided on the support rod, an angle a1 between the support rod and the connector, a1 being a complementary angle to the angle a2 between the ladle wall and the vertical direction, a measuring rod provided on the connector, the measuring rod being parallel to the support rod, a laser emitter coaxially provided at the lower end of the measuring rod, the laser emitter capable of emitting a laser beam toward the bottom of the steel ladle and producing a light spot, and an adjustable distance from the measuring rod to the support rod; the connector provided with a scale. The distance from the measuring rod to the permanent layer is determined by the measuring rod and the connector, the distance from the measuring rod to the working layer is determined by the laser emitter, and the thickness of the working layer is determined by taking the difference between these two distances. The device utilizes the parallelogram principle for measurement, and the support rod, connector, and measuring rod cooperate to replace high-precision measuring equipment, resulting in convenient operation, minimal impact from human and environmental factors, high measurement efficiency, and good economical performance.

[0006] Furthermore, the connecting member is a connecting plate, the extending direction of the connecting plate forms an angle a1 with the leaning rod, the connecting plate is provided with the scale, the working end corresponds to the zero mark on the scale, the measuring rod is provided with a rectangular hole, the rectangular hole passes through the measuring rod, the length direction of the rectangular hole is along the axis of the measuring rod, the rectangular hole is loosely fitted with the connecting plate, and a limit block is provided at the end of the connecting plate away from the working end. The rectangular hole enables the measuring rod to move on the connecting plate while remaining parallel to the leaning rod, thereby obtaining the distance between the measuring rod and the permanent layer, facilitating operation and further improving measurement efficiency.

[0007] Furthermore, a screw hole is provided at the upper end of the measuring rod, and a locking screw is provided in the screw hole. The locking screw can abut against the upper end surface of the connecting plate. The locking screw is used to lock the measuring rod, and after the measuring rod is adjusted, it is prevented from being moved by external forces, thereby ensuring measurement accuracy.

[0008] Furthermore, the connecting member is a steel tape measure, which includes a housing and a ruler. The housing is disposed on the support rod and adjacent to the working end. The angle between the ruler and the support rod is a1. The measuring rod is connected to the end of the ruler. The side of the measuring rod close to the support rod corresponds to the zero scale line of the ruler. When in a non-measuring state, the measuring rod is in contact with the support rod. On the one hand, the measuring range is expanded by the steel tape measure. On the other hand, the distance between the measuring rod and the support rod can be adjusted by the steel tape measure, which is convenient for adjustment. Moreover, when measurement is not needed, the ruler can be stored, reducing space occupation and facilitating storage.

[0009] Furthermore, the steel tape measure further includes a locker disposed on the housing, which can lock the adjusted position of the measuring rod to prevent it from moving due to external forces, thereby ensuring measurement accuracy.

[0010] A method for measuring the thickness of a ladle working layer, using the above-mentioned ladle working layer thickness measuring device, comprises the following steps:

[0011] S01: attaching the working end of the leaning rod to the permanent layer;

[0012] S02: adjusting the position of the measuring rod on the connecting plate and locking it so that the light spot generated by the laser emitter can fall on the bottom of the ladle, and recording the scale value Y corresponding to the measuring rod;

[0013] S03: Use a tape measure to measure the distance X from the light spot to the working layer;

[0014] S04: Calculate the working layer thickness D. The parallelogram principle is used for measurement, replacing high-precision measuring equipment. It is easy to operate, less affected by human and environmental factors, has high measurement efficiency, and is economical.

[0015] Furthermore, in the step S01, the contact position between the permanent layer and the leaning rod is polished to be smooth, so as to prevent the unevenness of the permanent layer from affecting the detection accuracy.

[0016] Furthermore, in S02, the value Y is the scale value corresponding to the side of the measuring rod close to the leaning rod.

[0017] Furthermore, in the step S04, the thickness of the working layer is calculated as follows:

[0018] D=Y+rX

[0019] r is the radius of the measuring rod. This avoids the influence of the measuring rod radius on the measurement accuracy, thereby further improving the measurement accuracy.

[0020] It can be seen from the above technical solutions that the present invention has the following advantages:

[0021] The present invention provides a device and method for measuring the thickness of the working layer of a ladle. The distance from the measuring rod to the permanent layer is obtained by a measuring rod and a connecting piece, the distance from the measuring rod to the working layer is obtained by a laser transmitter, and the thickness of the working layer is obtained by taking the difference between these two distances. The present device utilizes the parallelogram principle for measurement, replacing high-precision measuring equipment, and is easy to operate, less affected by human and environmental factors, and has high measurement efficiency and good economy. The rectangular hole enables the measuring rod to move on the connecting plate and remain parallel to the supporting rod, so as to obtain the distance from the measuring rod to the permanent layer, facilitate operation, and further improve measurement efficiency. The locking screw is used to achieve locking, and after the measuring rod is adjusted, it is prevented from being moved by external forces, thereby ensuring measurement accuracy. The steel tape measure is used to adjust the distance between the measuring rod and the supporting rod, which is easy to adjust, and the tape can be stored when measurement is not needed, thus reducing space occupation and facilitating storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a structural diagram of a specific embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the principle of a specific embodiment of the present invention.

[0025] Figure 3 It is a structural diagram of the second specific embodiment of the present invention.

[0026] In the figure, 1. support rod, 2. connecting plate, 5. locking screw, 6. measuring rod, 7. limit block, 8. laser transmitter, 9. steel tape measure, 10. locker, 12. working layer, 13. permanent layer. DETAILED DESCRIPTION

[0027] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent. Specific implementation method 1

[0029] like Figure 1As shown, this specific embodiment provides a device for measuring the thickness of the working layer of a ladle, including a supporting rod 1, a connecting piece and a measuring rod 6; the supporting rod 1 has a rectangular cross-section, the supporting rod 1 includes a working end, the working end is used to stick to the permanent layer of the ladle, and the end opposite to the working end is connected to a connecting piece by a bolt, and the connecting piece adopts a connecting plate 2, one end of the connecting plate 2 is connected to the supporting rod 1 by a wheel bolt, and a scale is provided on the connecting plate 2, and the working end corresponds to the zero scale line on the scale, and the angle between the supporting rod 1 and the connecting plate 2 is a1, and a1 and the angle a2 between the ladle wall and the vertical direction are complementary angles to each other; a measuring rod 6 is movably provided on the connecting plate 2, and the measuring rod 6 is parallel to the supporting rod 1, and a rectangular hole is provided on the measuring rod 6, which passes through the measuring rod 6, and the length direction of the rectangular hole is along the axis of the measuring rod 6, and the length direction of the rectangular hole is parallel to the connecting plate The angle in the extension direction of 2 is the same as a1, the upper and lower surfaces of the rectangular hole are parallel to the upper and lower end surfaces of the connecting plate 2, the rectangular hole and the connecting plate 2 are clearance-matched to ensure that the measuring rod 6 remains parallel to the supporting rod 1, and a limit block 7 is provided at the end of the connecting plate 2 away from the working end to prevent the measuring rod 6 from separating from the connecting plate 2; a screw hole is provided at the upper end of the measuring rod 6, and a locking screw 5 is provided in the screw hole. The locking screw 5 and the measuring rod 6 are coaxially arranged, and the end surface of the locking screw 5 in contact with the connecting plate 2 is parallel to the upper end surface of the connecting plate 2. The locking is achieved by the locking screw 5. After the measuring rod 6 is adjusted, it is prevented from being moved by external force, thereby ensuring measurement accuracy; the locking screw 5 can abut against the upper end surface of the connecting plate 2, and a laser emitter 8 is coaxially provided at the lower end of the measuring rod 6. The laser emitter 8 can emit laser to the bottom of the ladle and generate a light spot.

[0030] This specific embodiment also provides a ladle working layer thickness measurement method, using the above-mentioned ladle working layer thickness measurement device, comprising the following steps:

[0031] S01: Place the working end of the support rod 1 against the permanent layer;

[0032] S02: Adjust the position of the measuring rod 6 on the connecting plate 2 so that the light spot generated by the laser emitter 8 can fall on the bottom of the ladle. After adjustment, rotate the locking screw 5 to lock the measuring rod and record the scale value Y corresponding to the measuring rod 6;

[0033] S03: Use a tape measure to measure the distance X from the light spot to the working layer;

[0034] S04: Calculate the working layer thickness D.

[0035] In S01, the contact area between the permanent layer and the support rod is polished to prevent the support rod 1 from failing to fit the permanent layer and affecting the measurement accuracy. In S02, the value Y is the scale value corresponding to the side of the measuring rod 6 close to the support rod 1. In S04, the working layer thickness is calculated as follows:

[0036] D=Y+r-Xr is the radius of the measuring rod 6, so as to avoid the influence of the radius of the measuring rod 6 on the measurement accuracy.

[0037] like Figure 2 As shown, the principles of the measuring device and measuring method are:

[0038] The distance Y from the measuring rod 6 to the permanent layer and the distance X from the measuring spot to the working layer can be obtained through the scale on the connecting plate 2. The difference between the two is the working layer thickness D. In fact, X is the distance from the center of the light spot, that is, the axis position of the measuring rod 6 to the working layer, but Y does not include the radius of the measuring rod 6. In order to improve the measurement accuracy, the values ​​of Y and the radius of the measuring rod 6 are summed and then the difference is taken. Specific implementation method 2

[0040] like Figure 3 As shown, the structure of the ladle working layer thickness measuring device of this specific embodiment is basically the same as that of the specific embodiment 1, except that: the connecting piece adopts a steel tape measure 9. In this specific embodiment, the steel tape measure 9 is of model HILOCK-1320. The steel tape measure 9 includes a shell, a ruler and a locker 10. The shell is arranged on the leaning rod 1 and is adjacent to the working end by bolts. Two bolts are provided to prevent the steel tape measure 9 from rotating. The angle between the ruler and the leaning rod 1 is the same as a1. The measuring rod 6 is connected to the end of the ruler. The zero scale line of the steel tape measure 9 and the axis of the measuring rod 6 are the same as a2. When in a non-measuring state, the measuring rod 6 is in contact with the leaning rod 1. The locker 10 is provided at the opening of the shell to lock the ruler to prevent the measuring rod 6 from moving. On the one hand, the measuring range is expanded by the steel tape measure 9, and on the other hand, the distance between the measuring rod 6 and the leaning rod 1 is adjusted by the steel tape measure 9, which is convenient to adjust. Moreover, the ruler can be stored when measurement is not needed, which reduces space occupation and is convenient for storage.

[0041] The method for measuring the thickness of the ladle working layer using the measuring device is as follows:

[0042] S01: Place the working end of the support rod 1 against the permanent layer;

[0043] S02: Pull the measuring rod 6 and adjust the distance between the measuring rod 6 and the supporting rod 1 so that the light spot generated by the laser emitter 8 can fall on the bottom of the ladle, and record the scale value L corresponding to the end of the supporting rod 1 opposite to the working end;

[0044] S03: Use a ruler to measure the distance X from the light spot to the working layer;

[0045] S04: Calculate the working layer thickness D, D = L + H + rX, H is the width of the leaning rod 1 along the extending direction of the ruler; in fact, since L does not include the width of the leaning rod 1, the sum of L and H is the distance from the measuring rod 6 to the permanent layer. Therefore, in order to improve the measurement accuracy, the sum of the two is first taken, and then the sum is taken with the radius r of the measuring rod 6 for calculation.

[0046] From the above specific embodiments, it can be seen that the present invention has the following beneficial effects:

[0047] 1. The distance from the measuring rod 6 to the permanent layer is known through the measuring rod 6 and the connecting piece, and the distance from the measuring rod 6 to the working layer is known through the laser emitter 8. The thickness of the working layer is known by taking the difference between these two distances. This device uses the parallelogram principle for measurement, replacing high-precision measuring equipment, is easy to operate, is less affected by human and environmental factors, has high measurement efficiency, and is more economical.

[0048] The terms "upper," "lower," "outer," "inner," and the like (if any) in the description and claims of the present invention and the drawings are used to distinguish relative positions without necessarily giving qualitative definitions. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0049] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for measuring the thickness of a ladle working layer, characterized in that: A device for measuring the thickness of a ladle working layer is used. The device comprises a leaning rod (1), the leaning rod (1) comprises a working end, the working end is used to contact the permanent layer of the ladle, a connecting piece is provided on the leaning rod (1), an angle a1 between the leaning rod (1) and the connecting piece is formed, a1 and an angle a2 between the ladle wall and the vertical direction are complementary angles, a measuring rod (6) is provided on the connecting piece, the measuring rod (6) is parallel to the leaning rod (1), a laser emitter (8) is provided on the coaxial line at the lower end of the measuring rod (6), and the laser emitter (8) can emit laser light to the bottom of the ladle and A light spot is generated, and the distance between the measuring rod (6) and the leaning rod (1) can be adjusted; the connecting member is a connecting plate (2), the extending direction of the connecting plate (2) and the leaning rod (1) form an angle a1, a scale is provided on the connecting plate (2), the working end corresponds to the zero scale line on the scale, a rectangular hole is provided on the measuring rod (6), the rectangular hole passes through the measuring rod (6), the length direction of the rectangular hole is along the axial direction of the measuring rod (6), the rectangular hole is clearance-matched with the connecting plate (2), and a limit block (7) is provided at the end of the connecting plate (2) away from the working end; The following steps are involved: S01: attaching the working end of the leaning rod to the permanent layer; S02: adjusting the position of the measuring rod on the connecting plate and locking it so that the light spot generated by the laser emitter can fall on the bottom of the ladle, and recording the scale value Y corresponding to the measuring rod; S03: Use a tape measure to measure the distance X from the light spot to the working layer; S04: Calculate the working layer thickness D, D=Y+rX; r is the radius of the measuring rod.

2. The method for measuring the thickness of the ladle working layer according to claim 1, wherein: A screw hole is provided at the upper end of the measuring rod (6), a locking screw (5) is provided in the screw hole, and the locking screw (5) can abut against the upper end surface of the connecting plate (2).

3. The method for measuring the thickness of the ladle working layer according to claim 1, wherein: In the step S02 , the value Y is the scale value corresponding to the side of the measuring rod close to the support rod.

4. A method for measuring the thickness of a ladle working layer, characterized in that: A device for measuring the thickness of a ladle working layer is used. The device comprises a leaning rod (1), the leaning rod (1) comprises a working end, the working end is used to contact the permanent layer of the ladle, a connecting piece is provided on the leaning rod (1), an angle a1 between the leaning rod (1) and the connecting piece is provided, a1 and an angle a2 between the ladle wall and the vertical direction are complementary angles, a measuring rod (6) is provided on the connecting piece, the measuring rod (6) is parallel to the leaning rod (1), a laser emitter (8) is provided on the coaxial line of the lower end of the measuring rod (6), and the laser emitter (8) can Laser is emitted toward the bottom of the ladle to generate a light spot. The distance between the measuring rod (6) and the leaning rod (1) can be adjusted. The connecting member is a steel tape measure (9). The steel tape measure (9) includes a shell and a ruler. The shell is arranged on the leaning rod (1) and is adjacent to the working end. The angle between the extension and retraction direction of the ruler and the leaning rod (1) is a1. The measuring rod (6) is connected to the end of the ruler. The side of the measuring rod (6) close to the leaning rod (1) corresponds to the zero scale line of the ruler. When in a non-measuring state, the measuring rod (6) is in contact with the leaning rod (1). The following steps are involved: S01: Attach the working end of the support rod to the permanent layer; S02: Pull the measuring rod and adjust the distance between the measuring rod and the supporting rod so that the light spot generated by the laser emitter can fall on the bottom of the ladle, and record the scale value L corresponding to the end of the supporting rod opposite to the working end; S03: Use a ruler to measure the distance X from the light spot to the working layer; S04: Calculate the working layer thickness D, D=L+H+rX, H is the width of the measuring rod along the extending direction of the ruler, and r is the radius of the measuring rod.

5. The method for measuring the thickness of the ladle working layer according to claim 4, wherein: The steel tape measure (9) further comprises a locker (10), and the locker (10) is arranged on the housing.

6. The method for measuring the thickness of the ladle working layer according to claim 1 or 4, wherein: In the step S01 , the contact position between the permanent layer and the leaning rod is polished and smoothed.

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