Adjustable distance measuring breakout prediction thermocouple

Abstract

The utility model relates to the technical field of break-out forecast thermocouple, concretely is a kind of adjustable ranging break-out forecast thermocouple, it includes: pipe body, thermocouple main part, wherein, the inner wall of pipe body right end is fixed with mounting block, the outer surface screw thread connection of pipe body left end has adjusting cover, the outer surface of adjusting cover is provided with visual observation port, the inner surface sliding connection of pipe body periphery has scale bar, the one side of scale bar is fixed with the connecting ring sliding in adjusting cover limiting slot.The utility model is through the structure of scale bar and the adjusting cover with visual observation port, and operator can intuitively, quickly set the detection depth of all thermocouples to uniform standard value before installation.This completely replaces the cumbersome steps of measuring one by one using traditional depth gauge, greatly reduces human error, guarantees the high consistency of the depth of dozens of measuring points, ensures the accuracy of break-out forecast system from the source.

Description

Technical Field

[0001] This utility model relates to the field of thermocouple technology for predicting steel leakage, specifically a thermocouple for predicting steel leakage with adjustable distance measurement. Background Technology

[0002] The leakage prediction thermocouple is a key sensor in continuous casting production. Installed inside the blind hole of the copper plate in the crystallizer, it monitors temperature and prevents leakage accidents. Its monitoring accuracy is highly dependent on the accuracy of the distance between the thermocouple tip and the hot surface of the copper plate. This distance must be precisely controlled within a uniform range (e.g., 15-25mm). Too large a distance will lead to sluggish response and increased risk of missed alarms; too small a distance will easily cause the thermocouple to overheat and be damaged, and inconsistent depths at different measuring points will cause false alarms.

[0003] Currently, existing leak prediction thermocouples require installation or replacement at the same standard depth to ensure measurement accuracy and consistency. However, due to the large number of thermocouples required on continuous casting production lines, and the need to maintain a uniform installation depth for each thermocouple, specialized tools are needed for measurement and adjustment. This process is cumbersome and time-consuming. Furthermore, the high precision and repeatability required during installation lead to low efficiency for workers installing and calibrating thermocouples, impacting the overall production line's operational efficiency. Additionally, the installation process has poor tolerance for errors; even minor deviations necessitate rework or even damage to components. Therefore, we propose an adjustable-distance leak prediction thermocouple. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable-distance thermocouple for predicting steel leakage. This thermocouple offers advantages such as adjustable distance measurement, high installation efficiency, and high accuracy. It solves the problem that existing thermocouples for predicting steel leakage require ensuring each thermocouple is installed at the same standard depth during installation or replacement to guarantee measurement accuracy and consistency. However, due to the large number of thermocouples required on continuous casting production lines, and the need to maintain a uniform installation depth for each thermocouple, specialized tools are required for measurement and adjustment. This process is cumbersome and time-consuming. Furthermore, the high precision and repeatability required during installation lead to low efficiency for workers installing and calibrating thermocouples, impacting the overall production line efficiency. Additionally, the installation process has poor error tolerance; even minor deviations necessitate rework or even damage to components.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable-distance leak-in thermocouple for predicting steel leakage, comprising:

[0006] Tube body, thermocouple body;

[0007] The inner wall of the right end of the tube is fixed with an installation block, the outer surface of the left end of the tube is threaded with an adjustment cover, the outer surface of the adjustment cover is provided with a visual observation port, the inner surface of the tube is slidably connected with a ruler 106, and a connecting ring 105 is fixed on one side of the ruler 106. The connecting ring 105 slides in the limiting groove of the adjustment cover 103.

[0008] The thermocouple body is located inside the right end of the tube and is mounted on the right side of the mounting block.

[0009] Preferably, a T-shaped guide groove is formed on the outer surface of the tube, and a T-shaped positioning block is movable inside the T-shaped guide groove.

[0010] Preferably, the T-shaped positioning block has a T-shaped groove at one end inside the tube, and a particle anti-slip plate is fixed on one side of the T-shaped positioning block.

[0011] Preferably, a positioning screw is movably connected to the left end of the tube body via a bearing, a rotating block is fixed to the left side of the positioning screw, and a frustum driving block is threadedly connected to the outer surface of the positioning screw inside the tube body. T-shaped guide blocks are fixed around the outer surface of the frustum driving block.

[0012] Preferably, the T-shaped guide block is adapted to the T-shaped rail groove, and the T-shaped guide block slides on the inner side of the T-shaped rail groove.

[0013] Preferably, the left end of the adjusting cover is threaded with a protective cover.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model, through the structure of a ruler and an adjustable cover with a visual observation port, allows operators to intuitively and quickly set the detection depth of all thermocouples to a uniform standard value before installation. This completely replaces the tedious process of measuring each thermocouple individually using a depth gauge, greatly reducing human error and ensuring a high degree of consistency in the depth of dozens of measuring points, thus ensuring the accuracy of the steel leakage prediction system from the source.

[0016] 2. When installing this utility model, simply insert the device into the blind hole. When the front ends of the four rulers simultaneously contact the bottom of the hole, the preset depth is reached. This achieves a foolproof depth setting, eliminating the need for repeated measurement and calibration. It reduces the time for replacing and installing a set of thermocouples from tens of minutes to just a few minutes, significantly improving the maintenance efficiency of the continuous casting machine and shortening the production line downtime.

[0017] 3. This utility model has a compact structure and its external dimensions can be kept consistent with those of traditional thermocouples. It can be directly replaced without any modification to the blind holes of the existing crystallizer copper plate, which facilitates its rapid promotion and application on existing continuous casting production lines. Attached Figure Description

[0018] Figure 1 This is a first-view structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention from a second perspective;

[0020] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the unfolded structure of the adjusting cover, connecting ring, and protective cover of this utility model;

[0022] Figure 5 This is a schematic diagram of the mating structure between the positioning screw and the frustum drive block of this utility model;

[0023] Figure 6 This is a schematic diagram of the tube structure of this utility model.

[0024] In the diagram: 1. Tube body; 101. Mounting block; 102. Thermocouple body; 103. Adjustment cover; 104. Visual observation port; 105. Connecting ring; 106. Ruler bar; 107. T-shaped guide groove; 2. Positioning screw; 201. Frustum drive block; 202. Rotating block; 203. T-shaped guide block; 3. T-shaped positioning block; 301. T-shaped rail groove; 302. Particle anti-slip plate; 4. Protective cover. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The components of this application, including the tube body 1, mounting block 101, thermocouple body 102, adjusting cover 103, visual observation port 104, connecting ring 105, ruler 106, T-shaped guide groove 107, positioning screw 2, frustum drive block 201, rotating block 202, T-shaped guide block 203, T-shaped positioning block 3, T-shaped rail groove 301, particle anti-slip plate 302, and protective cover, are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0027] Example 1

[0028] Please see Figures 1-6As shown, this utility model provides a technical solution: an adjustable-distance leak-in thermocouple for predicting steel leakage, comprising:

[0029] Tube body 1, thermocouple body 102;

[0030] Among them, the inner wall of the right end of the tube body 1 is fixed with an installation block 101, the outer surface of the left end of the tube body 1 is threaded with an adjustment cover 103, the outer surface of the adjustment cover 103 is provided with a visual observation port 104, the inner surface of the tube body 1 is slidably connected with a ruler 106, a connecting ring 105 is fixed on one side of the ruler 106, and the connecting ring 105 slides in the limiting groove of the adjustment cover 103.

[0031] The thermocouple body 102 is located inside the right end of the tube 1, and the thermocouple body 102 is installed on the right side of the mounting block 101.

[0032] This technical solution involves the following steps: First, the target installation blind hole needs to be cleaned to ensure that there is no old thermal conductive adhesive, metal shavings, or oil inside. Then, according to the process requirements, for example, if the required installation depth is 20mm, hold the tube body 1 with one hand and rotate the adjustment cover 103 with the other hand. Observe the scale or relative position of the right end of the ruler 106 extending from the tube body 1 through the visual observation port 104. Screwing the adjustment cover 103 in will decrease the extension of the ruler 106; unscrewing the adjustment cover 103 will increase the extension of the ruler 106.

[0033] Next, adjust it so that the axial distance between the plane formed by the right end points of the four rulers 106 and the top measuring surface of the thermocouple body 102 is exactly 20mm, and this depth preset is completed.

[0034] Next, the entire device is slowly inserted into the blind hole of the crystallizer copper plate until the right ends of the four rulers 106 simultaneously contact the bottom face of the blind hole. At this point, it can no longer be inserted, and the top of the thermocouple body 102 is at the precise predetermined depth.

[0035] It should be noted that the steel leakage prediction thermocouple is a key safety sensor on the continuous casting production line. It is installed in a specific drill hole inside the copper plate of the crystallizer. Its core function is to monitor the formation of the billet shell inside the crystallizer in real time and continuously, and to issue an alarm in advance when an "adhesion" abnormality is detected, thereby avoiding catastrophic "steel leakage" accidents.

[0036] Under normal circumstances, thermocouples monitor a relatively stable, low temperature (e.g., 80-100℃). This temperature comes from the cooling effect of the cooling water on the copper plate, rather than directly measuring molten steel at thousands of degrees Celsius.

[0037] Abnormal situation (adhesion): When the billet shell adheres to the copper plate, the drawing force will tear the billet shell, which should be firmly attached. The high-temperature molten steel inside will immediately refill the tear and come into direct contact with the inner wall of the copper plate;

[0038] Temperature alarm: The high temperature of the molten steel causes a sudden and sharp rise in the temperature of the copper plate at that point (a peak appears on the temperature curve). After the thermocouple detects this abnormal signal, the system will immediately trigger the steel leakage prediction model;

[0039] Automatic decision-making: The system determines whether there is a real risk of molten steel leakage based on preset algorithms (such as the rate of temperature rise, the alarm position sequence of multiple thermocouples, etc.). Once confirmed, it will automatically command the straightening machine to stop or reduce its speed, thus giving the operator time to deal with the adhesion and prevent high-temperature molten steel from flowing out from the bottom of the crystallizer, causing equipment damage and production interruption.

[0040] Example 2

[0041] Based on Embodiment 1, this utility model is as follows: Figures 1-6 As shown, a T-shaped guide groove 107 is provided on the outer surface of the tube body 1. A T-shaped positioning block 3 is movably provided on the inner side of the T-shaped guide groove 107. A T-shaped rail groove 301 is provided at one end of the T-shaped positioning block 3 inside the tube body 1. A particle anti-slip plate 302 is fixed on one side of the T-shaped positioning block 3. A positioning screw 2 is movably connected to the left end of the tube body 1 through a bearing. A rotating block 202 is fixed on the left side of the positioning screw 2. A frustum driving block 201 is threadedly connected to the outer surface of the positioning screw 2 inside the tube body 1. T-shaped guide blocks 203 are fixed around the outer surface of the frustum driving block 201. The T-shaped guide blocks 203 are adapted to the T-shaped rail groove 301, and the T-shaped guide blocks 203 slide on the inner side of the T-shaped rail groove 301.

[0042] This technical solution: Keep the device stationary, use a tool or your hand to hold the rotating block 202 and rotate it clockwise. The rotating block 202 drives the positioning screw 2 to rotate. Under the thread drive, the frustum drive block 201 moves to the right along the positioning screw 2. At this time, the conical surface of the frustum drive block 201 drives the surrounding T-shaped guide blocks 203 to slide on the inner side of the T-shaped guide groove 107. At the same time, the movement of the frustum drive block 201 will push the T-shaped positioning block 3 to move outward in the T-shaped guide groove 107. After the particle anti-slip plate 302 contacts and abuts against the inner wall of the blind hole, it generates huge friction force and completely weds it, which can fix the position of the tube body 1 and ensure that the tube body 1 is centered in the blind hole, optimizes the heat conduction path, improves the temperature measurement stability and component life. At this time, the entire tube body 1 is uniformly and firmly fixed in the blind hole, and no axial or radial movement will occur.

[0043] Example 3

[0044] Based on Embodiment 1, this utility model is as follows: Figures 1-6 As shown, the left end of the adjustment cover 103 is threaded with a protective cover 4.

[0045] This technical solution: Finally, screw the protective cover 4 clockwise onto the thread on the left end of the adjusting cover 103 until it is tightened. This effectively covers the rotating block 202 and the positioning screw 2, preventing accidental collisions from causing the locking mechanism to loosen, ensuring the stability of the setting parameters, and reducing the risk of accidents.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. An adjustable-distance leak-proof thermocouple, characterized in that, include: Tube body (1), thermocouple body (102); Among them, an installation block (101) is fixed on the inner wall of the right end of the tube (1), an adjustment cover (103) is threaded on the outer surface of the left end of the tube (1), a visual observation port (104) is provided on the outer surface of the adjustment cover (103), a ruler (106) is slidably connected to the inner surface of the tube (1) around, a connecting ring (105) is fixed on one side of the ruler (106), and the connecting ring (105) slides in the limiting groove of the adjustment cover (103); The thermocouple body (102) is located inside the right end of the tube (1) and is mounted on the right side of the mounting block (101).

2. The adjustable-distance leak-prediction thermocouple according to claim 1, characterized in that: The outer surface of the tube (1) is provided with a T-shaped guide groove (107), and a T-shaped positioning block (3) is movable inside the T-shaped guide groove (107).

3. The adjustable-distance leak-in thermocouple according to claim 2, characterized in that: The T-shaped positioning block (3) is provided with a T-shaped rail groove (301) at one end inside the tube body (1), and a particle anti-slip plate (302) is fixed on one side of the T-shaped positioning block (3).

4. The adjustable-distance leak-prediction thermocouple according to claim 3, characterized in that: The left end of the tube (1) is movably connected to a positioning screw (2) via a bearing. A rotating block (202) is fixed on the left side of the positioning screw (2). A frustum drive block (201) is threadedly connected to the outer surface of the positioning screw (2) inside the tube (1). T-shaped guide blocks (203) are fixed around the outer surface of the frustum drive block (201).

5. The adjustable-distance leak-in prediction thermocouple according to claim 4, characterized in that: The T-shaped guide block (203) is adapted to the T-shaped rail groove (301), and the T-shaped guide block (203) slides on the inner side of the T-shaped rail groove (301).

6. The adjustable-distance leak-in thermocouple according to claim 1, characterized in that: The left end of the adjusting cover (103) is threaded with a protective cover (4).

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