A method, device and storage medium for measuring the length of continuous casting billet online

Abstract

The invention discloses a method for measuring the length of continuous casting billet online, comprising the following steps: obtaining the remaining billet length, the casting length information corresponding to the billet head and tail; obtaining the casting length and the position information of the cutting machine during cutting; based on tracking the photoelectric detection information in the flow channel, when the photoelectric detection feedback signal changes from being present to being absent, the billet head just reaches the photoelectric detection point, the casting length tracked by the PLC is subtracted from the casting length corresponding to the last cutting point to obtain the billet length in the flow channel, the billet length in the flow channel is subtracted from the real billet length corresponding to the position of the photoelectric tube to obtain the deviation value, and the deviation is recorded as the correction length, when the billet is cut, the casting length of the last cutting point and the casting length of the current cutting point are combined to obtain the calculated billet length, and the calculated length is subtracted from the correction length to obtain the real billet length. The method provides timely and real operation feedback for the cutting operator, reduces the labor intensity, and improves the labor efficiency.

Description

Technical Field

[0001] The invention belongs to the field of continuous casting production process in steel mills, is used for length measurement management of continuous casting production ingots, and relates to a method, equipment and storage medium for online length measurement of continuous casting ingots. Background Art

[0002] During the continuous casting process, there are related equipment to detect the casting speed and casting length in real time, and operators usually perform related production operations based on this information. Due to the instability of related detection equipment and the unevenness of the billet, the measured casting length is longer or shorter than the actual billet.

[0003] In this case, it is inaccurate to directly use the difference between the casting length corresponding to the current cutting point and the last cutting point to calculate the length of the ingot. In order to obtain the true length of the ingot, it is usually necessary to measure the length manually or use special equipment to measure the length, which increases the labor intensity or equipment investment, and reduces the real-time nature of the data, which is not conducive to actual production operations. Summary of the invention

[0004] In order to solve the above problems, the technical solution adopted by the present invention is: a method for measuring the length of a continuous casting billet online, comprising the following steps:

[0005] Obtain the remaining length of the ingot, the casting length corresponding to the head of the ingot, the casting length corresponding to the tail of the ingot, and other information;

[0006] Obtain casting length and cutting machine position information during cutting;

[0007] Based on the photoelectric detection information in the tracking channel, when the photoelectric detection feedback signal changes from being present to being absent, the head of the billet just reaches the photoelectric detection point. The tracking casting length minus the casting length corresponding to the last cutting point is obtained to obtain the tracking length of the billet in the runner. The actual billet length corresponding to the position of the photoelectric tube is subtracted from the tracking length of the billet to obtain the deviation value, and the deviation is recorded as the correction length.

[0008] When cutting the ingot, the casting length at the last cutting point and the casting length at the current cutting point are combined to obtain the calculated ingot length. The calculated ingot length minus the correction length will give a tracking result that is close to the actual ingot length.

[0009] Furthermore, the method is applicable to the automatic cutting mode, where the cutting machine will automatically return to its original position after completing one cut, and will execute the pre-pressing, main pressing and cutting processes when the conditions for the length to be cut are met.

[0010] Furthermore, the length of the ingot is 8-11 meters, and the photoelectric detection point is at a position of 7.5 meters, 9.0 meters or 10.8 meters behind the original rear end of the cutting machine.

[0011] Furthermore, the correction length corrects the length of the cut billet according to the difference between the length of the real billet corresponding to the detection point and the length of the tracked remaining billet.

[0012] A device for measuring the length of continuous casting billets online comprises a photoelectric tube, a processor and a memory, wherein the processor implements the method for measuring the length of continuous casting billets online as described in any one of the above items when executing the computer program stored in the memory.

[0013] A computer-readable storage medium is used to store a computer program, wherein when the computer program is executed by a processor, the online length measurement method as described in any one of the above items is implemented.

[0014] The present invention provides a method, device and storage medium for online length measurement of continuous casting ingots, which can obtain accurate length when the ingots are cut, thereby improving the real-time and accuracy of obtaining the ingot length, and further providing timely and true operation feedback to the cutting operator, reducing manual labor intensity and improving labor efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 is a flow chart of the present application method; DETAILED DESCRIPTION

[0017] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0020] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0021] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0022] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0023] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0024] Figure 1 is a flow chart of the present application method;

[0025] A method for measuring the length of a continuous casting billet online comprises the following steps:

[0026] S1: Track the casting performance, cutting performance, photoelectric tube detection performance and other information of each continuous casting runner, and obtain the remaining length of the billet, the casting length information corresponding to the billet head, and the casting length information corresponding to the billet tail;

[0027] S2: Generate the cutting information of the ingot according to the pre-pressure, main pressure and start cutting information of the cutting machine, and record the casting length and other information corresponding to the cutting point at the start of each cutting;

[0028] Track cutting information in real time and obtain casting length and cutting machine position information during cutting;

[0029] S3: Based on the photoelectric detection information in the tracking flow channel, when the photoelectric detection feedback signal changes from being present to being absent, the head of the billet just reaches the photoelectric detection point, and the billet length tracked by the PLC is subtracted from the casting length corresponding to the last cutting point to obtain the calculated billet tracking length in the flow channel, and the billet tracking length is subtracted from the length at the position of the photoelectric tube to obtain the deviation between the tracking value and the actual object, and the difference is recorded as the correction value;

[0030] S4: When cutting the ingot, subtract the correction value from the tracked ingot cutting length to obtain a tracking result close to the actual ingot length.

[0031] Steps S1 / S2 / S3 / S4 are executed sequentially;

[0032] Furthermore, the method is applicable to the automatic cutting mode, where the cutting machine will automatically return to its original position after completing one cut, and will execute the pre-pressing, main pressing and cutting processes when the conditions for the length to be cut are met.

[0033] Furthermore, the length of the ingot is 8-11 meters, and the photoelectric detection point is located at a position of about 7.5 meters, 9.0 meters or 10.8 meters from the rear end of the cutting machine.

[0034] Furthermore, the correction length corrects the length of the cut billet according to the difference between the length of the real billet corresponding to the detection point and the length of the tracked remaining billet, thereby obtaining the real length of the cut billet.

[0035] A device for measuring the length of continuous casting billets online comprises a photoelectric tube, a processor and a memory, wherein the processor implements any one of the methods for measuring the length of continuous casting billets online when executing a computer program stored in the memory.

[0036] A computer-readable storage medium is used to store a computer program, wherein when the computer program is executed by a processor, the online length measurement method as described in any one of the above is implemented.

[0037] Embodiment 1:

[0038] S1: Obtain the remaining length of the billet and the casting length information corresponding to the billet head and tail;

[0039] S2: Obtaining casting length and cutting machine position information during cutting;

[0040] S3: When the target billet length is 8.5 meters, the correction will be made at the position of 7.5 meters.

[0041] For example, when the head of the billet reaches 7.5 meters, the corresponding casting length is 105 meters, the casting length corresponding to the last cutting point is 52.4 meters, and the casting length corresponding to the origin of the cutting machine is 45 meters. The tracked length of the billet after cutting is 7.6 meters (105-52.4-45=7.6 meters), and the correction length is 0.1 meters (7.6-7.5=0.1 meters);

[0042] S4: The main pressing is performed on the billet around the 8.5-meter position. At this time, the tracking length is assumed to be 106.03 meters, and the corresponding tracking billet length is 8.63 meters (106.03-52.4-45=8.63 meters). The actual billet length is 8.53 meters (8.63-0.1=8.53 meters).

[0043] Embodiment 2:

[0044] S1: Obtain the remaining length of the billet and the casting length information corresponding to the billet head and tail;

[0045] S2: Obtaining casting length and cutting machine position information during cutting;

[0046] S3: When the target billet length is 11 meters, the correction will be made at the position of 10.8 meters.

[0047] For example, when the head of the billet reaches 10.8 meters, the corresponding casting length is 108 meters, the casting length corresponding to the last cutting point is 52.4 meters, and the casting length corresponding to the origin of the cutting machine is 45 meters. The tracked length of the billet after cutting is 10.6 meters (108-52.4-45=10.6 meters), and the correction length is -0.2 meters (10.6-10.8=-0.2 meters);

[0048] S4: The main pressure is performed on the billet before and after the 11-meter position. At this time, the tracking length is assumed to be 108.03 meters, and the corresponding tracking billet length is 10.63 meters (108.03-52.4-45=10.63 meters). The actual billet length is 10.83 meters (10.63+0.2=10.83 meters).

[0049] The invention was designed, developed and implemented by the applicant himself, and was first applied in the 1930 and 1650 continuous casting machines of the steelmaking plant of Xichang Steel and Vanadium Company of Panzhihua Iron and Steel Group in May 2023. After using this method for online length measurement, the length of the ingot can be obtained at the beginning of cutting, and the deviation between this length and the actual ingot is within 2 cm.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for measuring the length of continuous casting ingot online, characterized in that: The following steps are involved: Obtain the remaining length of the ingot, the casting length information corresponding to the head of the ingot, and the casting length information corresponding to the tail of the ingot; Obtain casting length information and cutting machine position information during cutting; The photoelectric detection information in the runner is obtained in real time. When the photoelectric detection feedback signal changes from being present to being absent, the head of the billet reaches the photoelectric detection point. The tracking casting length minus the casting length corresponding to the last cutting point is obtained to obtain the tracking length of the billet in the runner. The actual billet length corresponding to the position of the photoelectric tube is subtracted from the tracking length of the billet to obtain the deviation value, which is recorded as the correction length. When cutting the billet, the casting length of the last cutting point and the casting length of the current cutting point are combined to obtain the billet tracking calculation length. The tracking result close to the actual billet length is obtained by subtracting the correction length from the calculated length. This method is applicable to the automatic cutting mode. After completing one cut, the cutting machine will automatically return to its original position. When the conditions for the length to be cut are met, the pre-pressing, main pressing and cutting processes will be executed. The length of the ingot is 8-11 meters, and the photoelectric detection point is at 7.5 meters, 9.0 meters or 10.8 meters at the rear end of the cutting machine.

2. The method for measuring the length of continuous casting billet online according to claim 1, characterized in that: The correction length corrects the length of the cut billet according to the difference between the length of the real billet corresponding to the detection point and the length of the remaining billet tracked.

3. A device for measuring the length of continuous casting billet online, characterized in that: The method comprises a photoelectric tube, a processor and a memory, wherein the processor implements the method for online length measurement of continuous casting billet as claimed in any one of claims 1 to 2 when executing the computer program stored in the memory.

4. A computer-readable storage medium, characterized in that: Used to store a computer program, wherein when the computer program is executed by a processor, the method for online length measurement of a continuous casting billet as claimed in any one of claims 1 to 2 is implemented.

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