Automatic identification and tracking system for cold billet of heating furnace
Through the automatic identification and tracking system of cold blanks in the heating furnace, the automatic identification and tracking of cold blanks is achieved by using sensors and PLC control, which solves the problem of cold blanks reliance on manual operations, and improves production safety and equipment stability.
Patent Information
- Application Number
- CN202510352351.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2025-08-08
AI Technical Summary
In the prior art, the identification and tracking of cold blanks rely on manual operations, which increases the workload of the staff at work, and is prone to abnormal operation of equipment due to operational errors, affecting production safety.
The automatic identification and tracking system for cold blanks of heating furnace is adopted, including the front-end cold blank identification module, the in-furth furnace cold blank identification module, the position tracking module of cold blanks in the furnace and the manual intervention auxiliary system. The sensors are used to detect the type of raw material blanks and automatically identify them, and combine PLC control to achieve automatic tracking and manual intervention functions.
It reduces manual operation, improves production safety, ensures stable operation of equipment, reduces the probability of production accidents, and realizes the automation of cold blank markings and data accuracy.
Smart Images
Figure CN120438415A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of electrical automation control, in particular to an automatic identification and tracking system for cold billets in a heating furnace. Background Art
[0002] The reheating furnace in a steel mill is a crucial piece of equipment in the hot rolling process. Billets to be rolled must be heated and insulated in the reheating furnace before entering the rolling process. Billets are divided into hot billets (high-temperature billets) and cold billets (low-temperature billets). Billets of different temperatures require different heating processes within the reheating furnace. Production statistics and analysis require assigning specific colors to billets entering the furnace before loading to distinguish their origin. For example, billets cast in the first furnace could be blue, those cast in the second furnace red, those cast in the third furnace yellow, those cast in the fourth furnace blue, and so on. Once the colors are assigned, the HMI displays the billets within the furnace according to their origin, distinguishing them. Cold billets also require identification when they are inserted into the furnace during the hot billet charging process. This identification is used for statistical purposes and as a reference for the reheating furnace heating process (cold billets require a higher temperature). Currently, identification and tracking of cold billets is performed manually by operators on the operation screen. This technology has the following shortcomings:
[0003] 1. The manual identification and statistics of cold billets increase the workload of operators. When doing this work, their attention cannot be focused on the automatically running equipment. If a sudden failure of the equipment occurs and manual intervention cannot be made in the first place, the accident will be magnified.
[0004] 2. Manual cold billet identification and tracking operation is to set the color of the billet. The billet color setting operation is generally changed through mouse operation. For example, click once for yellow, click twice for red, click three times for yellow, and click four times for colorless (colorless indicates no billet). During this operation, if the mouse fails and multiple clicks occur, it may cause the color to be set to colorless by mistake. The no-steel signal is linked to the furnace feeding equipment, and incorrect operation will affect the normal operation of the equipment. Summary of the Invention
[0005] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides an automatic identification and tracking system for cold billets in a heating furnace.
[0006] The technical solution adopted by the present invention to solve the technical problem is: a heating furnace cold billet automatic identification and tracking system, comprising:
[0007] A cold billet identification module in front of a furnace, comprising a detection module and a judgment module; the detection module is used for detecting fixture signals and hot metal signals; the judgment module is used for judging whether the raw material billet is a hot billet or a cold billet based on the fixture signals and hot metal signals detected by the detection module;
[0008] a cold billet identification module for entering the furnace, the cold billet identification module for generating a cold billet identification when the cold billet identified in step 1 reaches the position of the furnace roller;
[0009] The cold billet position tracking module in the furnace is used to trigger the forward transmission of the cold billet mark when the walking beam in the heating furnace moves forward one step, and trigger the backward transmission of the cold billet mark when the walking beam moves backward one step.
[0010] As a further improvement of the present invention: the detection module includes a fixed object detection sensor and a hot metal detection sensor, the fixed object detection sensor is used to perform fixed object signal detection between the loading roller and the furnace entry roller, and the hot metal detection sensor is used to perform hot metal signal detection between the loading roller and the furnace entry roller.
[0011] As a further improvement of the present invention: the judgment module is used to determine that the raw material blank is a hot blank when the fixture signal and the hot metal signal are both true signals, and to determine that the raw material blank is a cold blank when the fixture signal is true and the hot metal signal is false.
[0012] As a further improvement of the present invention, it also includes a transfer module, which is used to store the cold billet identification generated in step 2 at the first address and trigger the first address to be transferred to the second address before the identification is updated.
[0013] As a further improvement of the present invention, a manual intervention auxiliary system is also included for manually intervening in the generation and elimination of cold billet markings.
[0014] As a further improvement of the present invention: the operation screen of the manual intervention assistance system is nested in the background of the main screen as a secondary screen of the main screen, and is triggered and called out by a specific operation button of the main screen. The operation screen of the manual intervention assistance system has the same number of buttons as the number of steel billet positions. Each button sequentially identifies the cold billet mark corresponding to the relevant position. The corresponding cold billet mark can be generated and eliminated by clicking the operation button.
[0015] As a further improvement of the present invention: the cold billet automatic identification and tracking method of the heating furnace cold billet automatic identification and tracking system comprises the following steps:
[0016] Step 1: Identify cold billets in front of the furnace; perform fixture signal detection and hot metal signal detection between the loading roller and the furnace roller; if both the fixture signal and the hot metal signal are true, the raw material billet is determined to be a hot billet; if the fixture signal is true and the hot metal signal is false, the raw material billet is determined to be a cold billet;
[0017] Step 2: marking the cold billet entering the furnace; when the cold billet identified in step 1 reaches the position of the roller table entering the furnace, a cold billet mark is generated;
[0018] Step three, tracking the position of the cold billet in the furnace; when the walking beam in the heating furnace moves forward one step, the forward movement of the cold billet mark is triggered once, and when the walking beam moves backward one step, the backward movement of the cold billet mark is triggered once.
[0019] As a further improvement of the present invention: the cold billet automatic identification and tracking method further includes the following steps:
[0020] Step 4: Manual intervention auxiliary operation; manual intervention auxiliary operation is used to manually intervene in the generation and elimination of cold billet identification.
[0021] As a further improvement of the present invention: the operation screen of the manual intervention auxiliary operation in step four is nested in the background of the main screen as a secondary screen of the main screen, and is triggered and called out by a specific operation button of the main screen. The operation screen of the manual intervention auxiliary operation has the same number of buttons as the number of steel billet positions, and each button sequentially identifies the cold billet mark corresponding to the relevant position. The corresponding cold billet mark can be generated and eliminated by clicking the operation button.
[0022] As a further improvement of the present invention: the step 2 further includes: storing the generated cold billet identification at the first address, and triggering the transmission of the first address to the second address before the identification is updated.
[0023] Compared with the prior art, the present invention has the following beneficial effects:
[0024] 1. The present invention has the function of automatically identifying cold billets. The identification of cold billets entering the furnace can be completed automatically without manual operation, which can reduce the workload of post staff, ensure that they have more energy to focus on operating major process equipment, and reduce the expansion of production accidents.
[0025] 2. The present invention can automatically track the identification of cold billets in the furnace, and is independent of the color setting system for distinguishing furnace numbers. During the automatic tracking operation or manual intervention operation, the color setting system of the billets entering the furnace will not be interfered with, thus avoiding the impact of no operation on the operation of the equipment.
[0026] 3. The present invention has a manual intervention auxiliary system, which can switch to manual intervention mode when the system's automatic operation is abnormal, so that the system can run normally through manual intervention, thereby improving the stability of the system.
[0027] 4. The automatic identification and tracking system for cold billets in a heating furnace of the present invention is developed based on PLC and has the functions of identifying cold billets in front of the furnace, tracking cold billets in the furnace, and manually intervening in tracking data. It has the advantages of flexible control and stable and accurate data. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 This is a flowchart of implementation case 1 of the present invention.
[0029] Figure 2The following is a workflow diagram of embodiment 2 of the present invention. DETAILED DESCRIPTION
[0030] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0031] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged 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" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0032] Implementation Case 1:
[0033] like Figure 1 In view of the shortcomings of the above-mentioned prior art, this embodiment provides a heating furnace cold billet automatic identification and tracking system, comprising:
[0034] A cold billet identification module in front of a furnace, the cold billet identification module in front of a furnace includes a detection module and a judgment module; the detection module includes a fixture detection sensor and a hot metal detection sensor, the fixture detection sensor is used to detect fixture signals between the loading roller and the furnace roller, and the hot metal detection sensor is used to detect hot metal signals between the loading roller and the furnace roller; the judgment module is used to judge whether the raw material billet is a hot billet or a cold billet based on the fixture signal and the hot metal signal; the judgment module is used to judge that the raw material billet is a hot billet when both the fixture signal and the hot metal signal are true signals, and to judge that the raw material billet is a cold billet when the fixture signal is true and the hot metal signal is false;
[0035] a cold billet identification module for entering the furnace, the cold billet identification module for generating a cold billet identification when the cold billet identified in step 1 reaches the position of the furnace roller;
[0036] A transfer module is used to store the cold billet identification generated in step 2 at a first address and trigger the transfer of the first address to a second address before the identification is updated; the identification generated in the previous cycle is saved at the second address to ensure that the identification is not lost; by performing a secondary transfer on the cold billet identification after it is generated, it is ensured that the identification is not overwritten by a new identification before transmission, resulting in the identification being lost; the second address is an information data storage module;
[0037] The cold billet position tracking module in the furnace is used to trigger the forward movement of the cold billet identification when the walking beam in the heating furnace moves forward one step, and trigger the backward movement of the cold billet identification when the walking beam moves backward one step;
[0038] The manual intervention assistance system is used to manually intervene in the generation and removal of cold billet markings. The manual intervention assistance system's operation screen is nested in the background of the main screen as a secondary screen, triggered by a specific operation button on the main screen. The manual intervention assistance system's operation screen has the same number of buttons as the billet positions. Each button sequentially identifies the cold billet marking corresponding to the relevant position. Clicking the operation button will generate or remove the corresponding cold billet marking.
[0039] Implementation Case 2:
[0040] like Figure 2 This embodiment provides a method for automatically identifying and tracking cold billets in a heating furnace cold billet automatic identification and tracking system, comprising the following steps:
[0041] Step 1: Identify cold billets in front of the furnace; perform fixture signal detection and hot metal signal detection between the loading roller and the furnace roller; if both the fixture signal and the hot metal signal are true, the raw material billet is determined to be a hot billet; if the fixture signal is true and the hot metal signal is false, the raw material billet is determined to be a cold billet;
[0042] Step 2: Identify the cold billet entering the furnace; generate a cold billet identification when the cold billet identified in step 1 reaches the roller position entering the furnace; store the cold billet identification at the first address when it is generated, and trigger the first address to be transferred to the second address before the identification is updated, and save the identification generated in the previous cycle at the second address to ensure that the identification is not lost; by transferring the cold billet identification a second time after it is generated, it can be ensured that the identification will not be overwritten by the new identification before transmission, causing the identification to be lost.
[0043] Step 3: Tracking the position of the cold billet in the furnace; when the walking beam in the heating furnace moves forward one step, the cold billet identification is triggered to move forward, and when the walking beam moves backward one step, the cold billet identification is triggered to move backward;
[0044] Step 4: Manual Intervention Auxiliary Operation. This is used to manually intervene in the generation and removal of cold billet identification. The manual intervention auxiliary operation screen is nested in the background of the main screen as a secondary screen of the main screen, and is triggered by a specific operation button on the main screen. The manual intervention auxiliary operation screen has the same number of buttons as the billet positions. Each button sequentially identifies the cold billet identification at the corresponding position. Clicking the operation button will generate or remove the corresponding cold billet identification.
[0045] Implementation Case 3:
[0046] The present invention provides a cold billet automatic identification and tracking method of a heating furnace cold billet automatic identification and tracking system, comprising the following steps:
[0047] Step 1: Identification of cold billets in front of the furnace;
[0048] The front area of a heating furnace generally has two sets of rollers, such as the loading roller and the furnace entry roller (different factories have different names for the roller groups in this area). The raw material billets pass through the loading rollers to the furnace entry rollers, and then are sent to the furnace from the front of the furnace entry rollers. Two pairs of sensors are installed between the loading rollers and the furnace entry rollers, one pair is a fixed object detection sensor, and the other pair is a hot metal detection sensor. When the raw material billets pass from the loading rollers to the furnace entry rollers, each pair of sensors will generate a detection signal. For example, the fixed object sensor detects signal X1, and the hot metal sensor detects signal X2. When both X1 and X2 detect true signals, the raw material billet is determined to be a hot billet. When the XI signal is true and the X2 signal is false, the raw material billet is determined to be a cold billet. After program processing, when the raw material billet reaches the furnace entry roller position, the raw material billet detection is completed and a cold billet mark is generated.
[0049] The hot metal detection sensor adopts a high-temperature red steel detection sensor based on a photosensitive detection element. The high-temperature red steel detection sensor is often used to detect the signal when high-temperature red steel reaches a certain position.
[0050] Step 2: Marking the cold billets entering the furnace;
[0051] After processing in step 1, the raw material billet generates a cold billet identification when it reaches the furnace roller table. The timing of triggering the cold billet identification transmission lags behind the timing of its generation, and there's a possibility that the identification will be overwritten by a new one before it's transmitted. To address this issue, a second transfer of the cold billet identification is necessary after it's generated to ensure it's not overwritten by a new one before it's transmitted, resulting in loss of the identification.
[0052] The transfer includes storing the cold billet identification at address MD0 when it is generated, triggering the transfer of MDO to MD4 before the identification is updated, and saving the identification generated in the previous cycle through MD4 to ensure that the identification is not lost.
[0053] Step 3: Tracking the cold billet position in the furnace;
[0054] Obtain a cold billet identification of the current billet through step 2. The cold billet identification is different from the billet identification in the furnace. The billet identification in the furnace has the function of billet source identification and steel signal setting. There is a risk of losing the steel signal due to operation when operating the billet identification in the furnace. The cold billet identification only identifies the corresponding billet as a cold billet. The identification is based on the steel signal, that is, there will be a cold billet identification after there is steel. The presence or absence of the cold billet identification does not affect the steel signal. This distinction requires that an independent storage unit be assigned to each identification. There are 120 billets in the furnace, and 120 storage points need to be allocated accordingly. The forward movement of the cold billet identification is triggered when the stepping beam moves forward one step, and the backward movement of the cold billet identification is triggered when the stepping beam moves back one step.
[0055] The steel signal indicates that there is a steel billet at the current location and is used as a signal for program interlocking.
[0056] The walking beam is a beam device nested in the heating furnace that moves the steel billet from the furnace entry position to the furnace exit position in steps.
[0057] Step 4: Manually intervene in the auxiliary system;
[0058] The manual intervention assistance system allows users to manually generate and cancel billet markers for all positions. The manual intervention assistance system's operation screen is nested within the main screen as a secondary screen, triggered by a specific operation button on the main screen. The operation screen has as many buttons as billet positions, and each button sequentially displays a billet marker for the corresponding position. Clicking an operation button activates or deactivates the corresponding billet marker.
[0059] Secondary screen: It is not part of the main screen. It is triggered by a specific button on the main screen and can be displayed at a specific location within the main screen.
[0060] The main functions of the present invention are:
[0061] The present invention has the function of automatically identifying cold billets, and can automatically complete the identification of cold billets entering the furnace without manual operation, which can reduce the workload of post staff, ensure that they have more energy to focus on operating the main process equipment, and reduce the expansion of production accidents. The present invention can automatically track the identification of cold billets in the furnace, and is independent of the color setting system for distinguishing furnace numbers. It will not interfere with the color setting system of the billets entering the furnace during the automatic tracking operation or manual intervention operation, thus avoiding the impact of no operation on the operation of the equipment. The present invention has a manual intervention auxiliary system, and can switch to manual intervention mode when an abnormality occurs in the automatic operation of the system. Through manual intervention, the system can operate normally and the stability of the system is improved. A heating furnace cold billet automatic identification and tracking system of the present invention is developed based on PLC, and has the functions of cold billet identification in front of the furnace, cold billet tracking in the furnace, manual intervention tracking data, etc., and has the advantages of flexible control and stable and accurate data.
[0062] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and implementations are within the scope and spirit of the present invention and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwiring, or a combination of any of these. Furthermore, each functional unit may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit.
[0063] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.
[0064] The units described as separate components may or may not be physically separate, and the components of the control device may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.
[0065] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk, etc. Various media that can store program codes.
[0066] In the description of the present invention, it should be understood that the terms "upper end face", "lower end face", "top", "bottom", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention, and therefore cannot be understood as limiting the actual use direction of the present invention.
[0067] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. 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 make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.
Claims
1. A heating furnace cold billet automatic identification and tracking system, characterized by: include: A cold billet recognition module in front of the furnace, comprising a detection module and a judgment module; The detection module is used for detecting fixture signals and hot metal signals; the judgment module is used for judging whether the raw material blank is a hot blank or a cold blank based on the fixture signals and hot metal signals detected by the detection module; a cold billet identification module for entering the furnace, the cold billet identification module for generating a cold billet identification when the cold billet identified in step 1 reaches the position of the furnace roller; The cold billet position tracking module in the furnace is used to trigger the forward transmission of the cold billet mark when the walking beam in the heating furnace moves forward one step, and trigger the backward transmission of the cold billet mark when the walking beam moves backward one step.
2. The automatic identification and tracking system for cold billets in a heating furnace according to claim 1, characterized in that: The detection module includes a fixed object detection sensor and a hot metal detection sensor. The fixed object detection sensor is used to detect fixed object signals between the loading roller and the furnace entry roller, and the hot metal detection sensor is used to detect hot metal signals between the loading roller and the furnace entry roller.
3. The automatic identification and tracking system for cold billets in a heating furnace according to claim 2, characterized in that: The judgment module is used to judge that the raw material blank is a hot blank when the fixture signal and the hot metal signal are both true signals, and to judge that the raw material blank is a cold blank when the fixture signal is true and the hot metal signal is false.
4. The automatic identification and tracking system for cold billets in a heating furnace according to claim 1, characterized in that: It also includes a transfer module, which is used to store the cold billet identification generated in step 2 at the first address and trigger the first address to be transferred to the second address before the identification is updated.
5. The automatic identification and tracking system for cold billets in a heating furnace according to claim 1, characterized in that: It also includes a manual intervention auxiliary system for manually intervening in the generation and elimination of cold billet markings.
6. The automatic identification and tracking system for cold billets in a heating furnace according to claim 5, characterized in that: The operation screen of the manual intervention auxiliary system has buttons of the same number as the billet positions, and each button sequentially identifies the cold billet mark corresponding to the relevant position. By clicking the operation button, the corresponding cold billet mark can be generated and eliminated.
7. The automatic identification and tracking system for cold billets in a heating furnace according to claim 1, characterized in that: The method for automatically identifying and tracking cold billets in a heating furnace cold billet automatic identification and tracking system comprises the following steps: Step 1: Identify cold billets in front of the furnace; perform fixture signal detection and hot metal signal detection between the loading roller and the furnace roller; if both the fixture signal and the hot metal signal are true, the raw material billet is determined to be a hot billet; if the fixture signal is true and the hot metal signal is false, the raw material billet is determined to be a cold billet; Step 2: marking the cold billet entering the furnace; when the cold billet identified in step 1 reaches the position of the roller table entering the furnace, a cold billet mark is generated; Step three, tracking the position of the cold billet in the furnace; when the walking beam in the heating furnace moves forward one step, the forward movement of the cold billet mark is triggered once, and when the walking beam moves backward one step, the backward movement of the cold billet mark is triggered once.
8. The automatic identification and tracking system for cold billets in a heating furnace according to claim 7, characterized in that: The cold billet automatic identification and tracking method further comprises the following steps: Step 4: Manual intervention auxiliary operation; manual intervention auxiliary operation is used to manually intervene in the generation and elimination of cold billet identification.
9. The automatic identification and tracking system for cold billets in a heating furnace according to claim 8, characterized in that: The operation screen of the manual intervention auxiliary operation in step 4 has the same number of buttons as the number of billet positions. Each button sequentially identifies the cold billet mark corresponding to the relevant position. By clicking the operation button, the corresponding cold billet mark can be generated and eliminated.
10. The automatic identification and tracking system for cold billets in a heating furnace according to claim 7, characterized in that: The step 2 further includes: storing the generated cold billet identification at the first address, and triggering the transmission of the first address to the second address before the identification is updated.