Fixing device of temperature measuring rod for continuous temperature measurement of tundish

Abstract

The utility model discloses a fixing device of a temperature measuring rod for continuous temperature measurement of a tundish. According to the device, a counter weight is arranged at the bottom of a fireproof cylinder, the gravity center of the counter weight is coaxial with the axis of the fireproof cylinder, a through hole is formed in the counter weight, a plurality of cylinder hanging grooves are formed in the upper edge of the fireproof cylinder and evenly distributed in the circumferential direction, each cylinder hanging groove is in an L shape, the top of each cylinder hanging groove is provided with an upper opening, and the bottom of each cylinder hanging groove is provided with a limiting groove; the positioning cylinder is arranged in the fireproof cylinder and is coaxial with the fireproof cylinder, and the inner diameter of the positioning cylinder is matched with the outer diameter of the detector; positioning hanging arms corresponding to the barrel hanging grooves are arranged on the outer wall of the positioning barrel, and the positioning hanging arms can move downwards from the upper opening to enter the barrel hanging grooves and then rotate to be clamped into the limiting grooves; a vertical open slot is formed in the positioning cylinder; and the upper arc-shaped baffle plate and the lower arc-shaped baffle plate are horizontally and detachably mounted at the opening groove. According to the utility model, the position of the temperature measuring rod can be fixed, and excessive floating and excessive deflection of the temperature measuring rod are avoided.

Description

Technical Field

[0001] The utility model relates to the field of metallurgical equipment, and particularly relates to a fixing device for a temperature measuring rod for continuous temperature measurement of a tundish. Background Art

[0002] The tundish is one of the important intermediate links in the steelmaking production process. Molten steel in the ladle is injected into the tundish through a long nozzle at the upper part of the tundish. After the molten steel flows through the tundish, it is injected into the mold through a submerged nozzle arranged at the bottom of the tundish. The stability of the temperature field, flow field, and liquid level height of the molten steel in the tundish is of crucial significance to the final quality. Therefore, a continuous temperature measuring device needs to be installed on the tundish to monitor the temperature to ensure the quality control of continuous casting.

[0003] The continuous temperature measuring structure is a relatively key component on the tundish in the steelmaking continuous casting process. Currently, one end of the temperature measuring rod used is inserted under the molten steel surface in the tundish, and the other end is connected to a detector. The detector transmits the temperature signal to the PLC system for processing. After the PLC system finishes processing, the temperature is sent and displayed on the screen. However, during the use of the temperature measuring rod, due to the large upward buoyancy of the molten steel itself, after the temperature measuring rod is inserted into the molten steel, with the pouring and flowing of the molten steel, the temperature measuring rod will have a large upward float and yaw, which greatly affects the accuracy of temperature measurement, there is a large temperature deviation, and the superheat of the molten steel cannot be accurately controlled. Summary of the Invention

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and propose a fixing device for a temperature measuring rod for continuous temperature measurement of a tundish, which can fix the position of the temperature measuring rod, avoid excessive upward float and excessive yaw of the temperature measuring rod, improve the accuracy of continuous temperature measurement of molten steel, and provide a guarantee for effectively controlling the superheat of molten steel.

[0005] To achieve the above purpose, the utility model proposes the following technical solutions:

[0006] A fixing device for a temperature measuring rod for continuous temperature measurement of a tundish includes a fireproof cylinder body, a positioning mechanism, and a counterweight. The top of the temperature measuring rod is connected to a detector. The temperature measuring rod is vertically inserted into the temperature measuring hole of the tundish. The detector extends horizontally. The PLC system is connected to the detector to receive the temperature signal. The counterweight is arranged at the bottom of the fireproof cylinder body. The center of gravity of the counterweight is coaxial with the axis of the fireproof cylinder body. The fireproof cylinder body is placed at the temperature measuring hole of the tundish through the counterweight to stabilize the placement state of the fireproof cylinder body. A through hole is opened on the counterweight, so that the temperature measuring rod passes through the through hole on the fireproof cylinder body and the counterweight and enters the tundish for temperature measurement.

[0007] More than three cylinder body hanging grooves are opened on the upper edge of the fireproof cylinder body, which are evenly distributed circumferentially. The cylinder body hanging grooves are L-shaped. The top of the cylinder body hanging groove is an upper opening, and the bottom of the cylinder body hanging groove is a limiting groove.

[0008] The positioning mechanism includes a positioning cylinder body, an upper arc-shaped baffle, a lower arc-shaped baffle, and a positioning hanging arm. The positioning cylinder body is arranged inside the fireproof cylinder body, and the positioning cylinder body is coaxially arranged with the fireproof cylinder body. The inner diameter of the positioning cylinder body matches the outer diameter of the detector, so that the detector is in close contact with the inner wall of the positioning cylinder body, thereby restricting the lateral swing amplitude of the temperature measuring rod.

[0009] A positioning hanging arm corresponding to the cylinder hanging groove is arranged on the outer wall of the positioning cylinder body. The positioning hanging arm can move down from the upper opening into the cylinder hanging groove and then rotate and snap into the limiting groove, thereby realizing the restriction of the vertical position of the positioning cylinder body.

[0010] A vertical opening groove is arranged on the positioning cylinder body. The temperature measuring rod enters the positioning cylinder body from the upper opening of the positioning cylinder body from top to bottom, and the detector extends out from the opening groove.

[0011] The upper arc-shaped baffle and the lower arc-shaped baffle are horizontally and detachably installed at the opening groove. The interval height between the upper arc-shaped baffle and the lower arc-shaped baffle is 1.1 - 1.3 times the maximum height of the detector. The detector extends out from the gap between the upper arc-shaped baffle and the lower arc-shaped baffle, restricting the vertical movement range of the detector, thereby avoiding excessive floating of the temperature measuring rod.

[0012] Preferably, the inner diameter of the fireproof cylinder body is 2 - 4 times the outer diameter of the positioning cylinder body.

[0013] Preferably, two positioning hole groups are arranged at the opening groove, namely a first positioning hole group and a second positioning hole group. Each positioning hole group includes two positioning holes. The two positioning holes in the same positioning hole group are respectively arranged on both sides of the opening groove and have the same height. The second positioning hole group is arranged below the first positioning hole group;

[0014] Two first positioning pins are arranged at both ends of the upper side of the upper arc-shaped baffle. The first positioning pins are inserted into the first positioning hole group from bottom to top to realize the connection between the upper arc-shaped baffle and the first positioning hole group; two second positioning pins are arranged at both ends of the lower side of the lower arc-shaped baffle. The second positioning pins are inserted into the second positioning hole group from top to bottom to realize the connection between the lower arc-shaped baffle and the second positioning hole group.

[0015] The upper arc-shaped baffle is connected to the first positioning hole group from bottom to top, so that the upper arc-shaped baffle has only the degree of freedom to move downward. The lower arc-shaped baffle is connected to the second positioning hole group from top to bottom, so that the lower arc-shaped baffle has only the degree of freedom to move upward. The detector at the top of the temperature measuring rod is stuck between the upper arc-shaped limiting plate and the lower arc-shaped limiting plate. If the temperature measuring rod floats upward, an upward external force will be applied to the upper arc-shaped baffle, which will strengthen the connection stability between the upper arc-shaped baffle and the first positioning hole group, and further form a more stable limiting effect on the detector in the vertical direction.

[0016] Preferably, an arc-shaped limiting plate coaxial with the positioning cylinder is provided on the positioning hanging arm. The outer wall of the arc-shaped limiting plate is in close contact with the inner wall of the fireproof cylinder, and the arc-shaped limiting plate can slide along the inner wall of the fireproof cylinder; the height of the arc-shaped limiting plate is greater than the overall height of the cylinder hanging groove, so as to ensure the coaxiality of the positioning cylinder and the fireproof cylinder when the positioning cylinder is installed on the fireproof cylinder, and further limit the position of the temperature measuring rod.

[0017] During use, first place the fireproof cylinder directly above the temperature measuring hole of the tundish cover. The lower arc-shaped baffle is installed on the positioning cylinder. The detector is connected to the top of the temperature measuring rod. The temperature measuring rod is inserted into the positioning cylinder from top to bottom. The outer wall of the detector is in close contact with the inner wall of the positioning cylinder. The detector extends out from the opening groove of the positioning cylinder. At the same time, the bottom of the detector is stuck on the lower arc-shaped baffle.

[0018] Then install the positioning cylinder. Insert the positioning hanging arm on the positioning cylinder into the bottom of the cylinder hanging groove from the upper opening of the cylinder hanging groove, and rotate the positioning cylinder so that the positioning hanging arm is stuck in the limiting groove to realize the vertical position limit of the positioning cylinder.

[0019] Finally, install the upper arc-shaped baffle, which is detachably installed at the opening groove of the positioning cylinder, thereby realizing the vertical position limit of the detector, and finally realizing the position limit of the temperature measuring rod.

[0020] The beneficial effects of the present utility model are as follows:

[0021] In the present utility model, the detector is stuck in the positioning cylinder, the positioning cylinder is coaxially installed on the fireproof cylinder, and the fireproof cylinder is positioned on the tundish temperature measuring hole through a counterweight, avoiding excessive deflection of the temperature measuring rod and improving the accuracy of continuous molten steel temperature measurement.

[0022] In the present utility model, the upper arc-shaped baffle and the lower arc-shaped baffle on the positioning cylinder are used to vertically limit the detector, and the fireproof cylinder vertically limits the positioning cylinder. The fireproof cylinder is positioned on the tundish temperature measuring hole through a counterweight, avoiding excessive floating of the temperature measuring rod to a certain extent and improving the accuracy of continuous molten steel temperature measurement.

[0023] By adopting the above scheme, the present utility model can fix the position of the temperature measuring rod, avoid excessive floating and excessive deflection of the temperature measuring rod, improve the accuracy of continuous molten steel temperature measurement, and provide a guarantee for effectively controlling the superheat of molten steel. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained without creative efforts.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0026] Figure 2 It is a schematic diagram of the structure of the arc-shaped limiting plate in the second embodiment.

[0027] Figure 3 It is a schematic diagram of the connection structure of the upper arc-shaped baffle, the lower arc-shaped baffle and the positioning cylinder in the third embodiment.

[0028] In the figure, 1 - fireproof cylinder, 2 - positioning cylinder, 3 - upper arc-shaped baffle, 4 - lower arc-shaped baffle, 5 - positioning hanging arm, 6 - cylinder hanging groove, 7 - counterweight, 8 - upper opening, 9 - limiting groove, 51 - arc-shaped limiting plate; 21 - first positioning hole group, 22 - second positioning hole group, 31 - first positioning pin, 41 - second positioning pin. Embodiment

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0033] First embodiment:

[0034] As shown Figure 1 in the figure, a fixing device for a temperature measuring rod used for continuous temperature measurement of a tundish includes a fireproof cylinder body 1, a positioning mechanism 2, and a counterweight 7. The top of the temperature measuring rod is connected to a detector. The temperature measuring rod is vertically inserted into the temperature measuring hole of the tundish. The detector extends horizontally. The PLC system is connected to the detector to receive temperature signals. The counterweight 7 is arranged at the bottom of the fireproof cylinder body 1. The center of gravity of the counterweight 7 is coaxial with the axis of the fireproof cylinder body 1. The fireproof cylinder body 1 is placed at the temperature measuring hole of the tundish through the counterweight 7 to stabilize the placement state of the fireproof cylinder body 1. A through hole is opened in the counterweight 7, so that the temperature measuring rod passes through the through hole in the fireproof cylinder body 1 and the counterweight 7 and enters the tundish for temperature measurement.

[0035] More than three cylinder body hanging grooves 6 are opened at the upper edge of the fireproof cylinder body 1 and are evenly distributed circumferentially. The cylinder body hanging grooves 6 are in an L shape. The top of the cylinder body hanging groove 6 is an upper opening 8, and the bottom of the cylinder body hanging groove 6 is a limiting groove 9.

[0036] The positioning mechanism includes a positioning cylinder body 2, an upper arc-shaped baffle 3, a lower arc-shaped baffle 4, and a positioning hanging arm 5. The positioning cylinder body 2 is arranged inside the fireproof cylinder body 1 and is coaxially arranged with the fireproof cylinder body 1. The inner diameter of the positioning cylinder body 2 matches the outer diameter of the detector, so that the detector is closely attached to the inner wall of the positioning cylinder body 2, thereby limiting the lateral swing amplitude of the temperature measuring rod.

[0037] Positioning hanging arms 5 corresponding to the cylinder body hanging grooves 6 are arranged on the outer wall of the positioning cylinder body 2. The positioning hanging arms 5 can move down from the upper opening 8 and enter the cylinder body hanging groove 9, and then rotate and snap into the limiting groove, thereby realizing the vertical position limitation of the positioning cylinder body 2.

[0038] A vertical opening groove is arranged on the positioning cylinder body 2. The temperature measuring rod enters the positioning cylinder body 2 from the upper opening of the positioning cylinder body 2 from top to bottom, and the detector extends out from the opening groove.

[0039] The upper arc-shaped baffle 3 and the lower arc-shaped baffle 4 are horizontally detachably installed at the opening groove. The interval height between the upper arc-shaped baffle 3 and the lower arc-shaped baffle 4 is 1.1 to 1.3 times the maximum height of the detector. The detector extends out from the gap between the upper arc-shaped baffle 3 and the lower arc-shaped baffle 4 to limit the vertical movement range of the detector, thereby avoiding excessive floating of the temperature measuring rod.

[0040] During use, first place the fireproof cylinder body 1 directly above the temperature measuring hole of the tundish cover. Install the lower arc-shaped baffle 4 on the positioning cylinder body 2. Connect the detector to the top of the temperature measuring rod. The temperature measuring rod is inserted into the positioning cylinder body 2 from top to bottom. The outer wall of the detector is closely attached to the inner wall of the positioning cylinder body 2. The detector extends out from the opening groove of the positioning cylinder body 2. At the same time, the bottom of the detector is stuck on the lower arc-shaped baffle 3.

[0041] Then install the positioning cylinder body 2. Insert the positioning hanging arm 5 on the positioning cylinder body 2 into the bottom of the cylinder body hanging groove 6 from the upper opening 8 of the cylinder body hanging groove 6. Rotate the positioning cylinder body 2 to make the positioning hanging arm 5 snap into the limiting groove 9, so as to realize the vertical position limitation of the positioning cylinder body 2.

[0042] Finally, install the upper arc-shaped baffle 3, which is detachably installed at the opening groove of the positioning cylinder body 2, so as to realize the vertical position limitation of the detector, and finally realize the position limitation of the temperature measuring rod.

[0043] Second Embodiment:

[0044] As Figure 1 shown, a fixing device for a temperature measuring rod used for continuous temperature measurement of a tundish includes a fireproof cylinder body 1, a positioning mechanism 2 and a counterweight 7. The top of the temperature measuring rod is connected to a detector. The temperature measuring rod is vertically inserted into the tundish temperature measuring hole. The detector extends horizontally. The PLC system is connected to the detector to receive temperature signals. The counterweight 7 is arranged at the bottom of the fireproof cylinder body 1. The center of gravity of the counterweight 7 is coaxial with the axis of the fireproof cylinder body 1. The fireproof cylinder body 1 is placed at the temperature measuring hole of the tundish through the counterweight 7 to stabilize the placement state of the fireproof cylinder body 1. A through hole is opened on the counterweight 7, so that the temperature measuring rod passes through the through hole on the fireproof cylinder body 1 and the counterweight 7 and enters the tundish for temperature measurement.

[0045] More than three cylinder body hanging grooves 6 are opened on the upper edge of the fireproof cylinder body 1, which are evenly distributed circumferentially. The cylinder body hanging groove 6 is L-shaped. The top of the cylinder body hanging groove 6 is the upper opening 8, and the bottom of the cylinder body hanging groove 6 is the limiting groove 9.

[0046] The positioning mechanism includes a positioning cylinder body 2, an upper arc-shaped baffle 3, a lower arc-shaped baffle 4 and a positioning hanging arm 5. The positioning cylinder body 2 is arranged inside the fireproof cylinder body 1 and is coaxially arranged with the fireproof cylinder body 1. The inner diameter of the positioning cylinder body 2 is matched with the outer diameter of the detector, so that the detector is in close contact with the inner wall of the positioning cylinder body 2, thereby limiting the side swing amplitude of the temperature measuring rod.

[0047] The positioning hanging arm 5 corresponding to the cylinder body hanging groove 6 is arranged on the outer wall of the positioning cylinder body 2. The positioning hanging arm 5 can move down from the upper opening 8 into the cylinder body hanging groove 9 and then rotate and snap into the limiting groove, thereby realizing the vertical position limitation of the positioning cylinder body 2.

[0048] A vertical opening groove is arranged on the positioning cylinder body 2. The temperature measuring rod enters the positioning cylinder body 2 from the upper opening of the positioning cylinder body 2 from top to bottom, and the detector extends out from the opening groove.

[0049] The upper arc-shaped baffle 3 and the lower arc-shaped baffle 4 are horizontally detachably installed at the opening groove. The spacing height between the upper arc-shaped baffle 3 and the lower arc-shaped baffle 4 is 1.1 to 1.3 times the maximum height of the detector. The detector extends out from the gap between the upper arc-shaped baffle 3 and the lower arc-shaped baffle 4 to limit the vertical movement range of the detector, thereby avoiding excessive floating of the temperature measuring rod.

[0050] As Figure 2 shown, an arc-shaped limiting plate 51 coaxial with the positioning cylinder 2 is provided on the positioning hanging arm 5. The outer wall of the arc-shaped limiting plate 51 is in close contact with the inner wall of the fireproof cylinder 1, and the arc-shaped limiting plate 51 can slide along the inner wall of the fireproof cylinder 1; the height of the arc-shaped limiting plate 51 is greater than the overall height of the cylinder hanging groove 6, so as to ensure the coaxiality of the positioning cylinder 2 and the fireproof cylinder 1 when the positioning cylinder 2 is installed on the fireproof cylinder 1, and further limit the position of the temperature measuring rod.

[0051] Third embodiment:

[0052] As Figure 1 shown, a fixing device for a temperature measuring rod for continuous temperature measurement of a tundish includes a fireproof cylinder 1, a positioning mechanism 2 and a counterweight 7. The top of the temperature measuring rod is connected to the detector. The temperature measuring rod is vertically inserted into the tundish temperature measuring hole. The detector extends horizontally. The PLC system is connected to the detector to receive temperature signals; the counterweight 7 is arranged at the bottom of the fireproof cylinder 1, and the center of gravity of the counterweight 7 is coaxial with the axis of the fireproof cylinder 1. The fireproof cylinder 1 is placed at the temperature measuring hole of the tundish through the counterweight 7 to stabilize the placement state of the fireproof cylinder 1; a through hole is opened on the counterweight 7, so that the temperature measuring rod passes through the through hole on the fireproof cylinder 1 and the counterweight 7 and enters the tundish for temperature measurement.

[0053] More than three cylinder hanging grooves 6 are opened on the upper edge of the fireproof cylinder 1, which are evenly distributed in the circumferential direction. The cylinder hanging grooves 6 are L-shaped. The top of the cylinder hanging groove 6 is an upper opening 8, and the bottom of the cylinder hanging groove 6 is a limiting groove 9.

[0054] The positioning mechanism includes a positioning cylinder 2, an upper arc-shaped baffle 3, a lower arc-shaped baffle 4 and a positioning hanging arm 5. The positioning cylinder 2 is arranged in the fireproof cylinder 1 and is coaxially arranged with the fireproof cylinder 1. The inner diameter of the positioning cylinder 2 is matched with the outer diameter of the detector, so that the detector is in close contact with the inner wall of the positioning cylinder 2, thereby limiting the lateral swing amplitude of the temperature measuring rod.

[0055] A positioning hanging arm 5 corresponding to the cylinder hanging groove 6 is provided on the outer wall of the positioning cylinder 2. The positioning hanging arm 5 can move down from the upper opening 8 into the cylinder hanging groove 9 and then rotate and snap into the limiting groove, thereby realizing the limitation of the vertical position of the positioning cylinder 2.

[0056] A vertical opening groove is provided on the positioning cylinder 2. The temperature measuring rod enters the positioning cylinder 2 from the upper opening of the positioning cylinder 2 from top to bottom, and the detector extends out from the opening groove.

[0057] The upper arc-shaped baffle 3 and the lower arc-shaped baffle 4 are horizontally detachably installed at the opening groove. The interval height between the upper arc-shaped baffle 3 and the lower arc-shaped baffle 4 is 1.1 to 1.3 times the maximum height of the detector. The detector extends out from the gap between the upper arc-shaped baffle 3 and the lower arc-shaped baffle 4 to limit the vertical movement range of the detector, thereby avoiding excessive floating of the temperature measuring rod.

[0058] As Figure 3 shown, two positioning hole groups are provided at the opening groove, namely a first positioning hole group 21 and a second positioning hole group 22. Each positioning hole group includes two positioning holes. The two positioning holes in the same positioning hole group are respectively arranged on both sides of the opening groove and have the same height. The second positioning hole group 22 is placed below the first positioning hole group 21;

[0059] Two first positioning pins 31 are provided at both ends of the upper side of the upper arc-shaped baffle 3. The first positioning pins 31 are inserted into the first positioning hole group 21 from bottom to top to realize the connection between the upper arc-shaped baffle 3 and the first positioning hole group 21; two second positioning pins 41 are provided at both ends of the lower side of the lower arc-shaped baffle 4. The second positioning pins 41 are inserted into the second positioning hole group 22 from top to bottom to realize the connection between the lower arc-shaped baffle 4 and the second positioning hole group 22.

[0060] The above is only the preferred embodiment of the present invention, and it is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fixing device for a temperature measuring rod for continuous temperature measurement of a tundish, wherein the top of the temperature measuring rod is connected to a detector, and a PLC system is connected to the detector; the temperature measuring rod is arranged vertically, and the detector extends horizontally; the fixing device comprises a fireproof cylinder and a counterweight, wherein the counterweight is arranged at the bottom of the fireproof cylinder, the center of gravity of the counterweight is coaxial with the axis of the fireproof cylinder, and a through hole is opened on the counterweight, and the characteristics are as follows: The upper edge of the fireproof cylinder is provided with a plurality of cylinder hanging grooves which are evenly distributed circumferentially, and the cylinder hanging grooves are L-shaped, with the top of the cylinder hanging grooves being an upper opening, and the bottom of the cylinder hanging grooves being a limit groove; it also includes a positioning mechanism, and the positioning mechanism includes a positioning cylinder, an upper arc-shaped baffle, a lower arc-shaped baffle and a positioning hanging arm, the positioning cylinder is arranged in the fireproof cylinder and is coaxially arranged with the fireproof cylinder, and the inner diameter of the positioning cylinder matches the outer diameter of the detector; a positioning hanging arm corresponding to the cylinder hanging groove is provided on the outer wall of the positioning cylinder, and the positioning hanging arm can move down from the upper opening into the cylinder hanging groove, and then rotate to fit into the limit groove; a vertical opening groove is provided on the positioning cylinder; the upper arc-shaped baffle and the lower arc-shaped baffle are horizontally and detachably installed at the opening groove, and the spacing height between the upper arc-shaped baffle and the lower arc-shaped baffle is 1.1~1.3 of the maximum height of the detector.

2. The fixing device for a temperature measuring rod for continuous temperature measurement of a tundish according to claim 1, characterized in that: The inner diameter of the fireproof cylinder is 2 to 4 times the outer diameter of the positioning cylinder.

3. The fixing device for a temperature measuring rod for continuous temperature measurement of a tundish according to claim 1, characterized in that: Two positioning hole groups are provided at the opening groove, which are the first positioning hole group and the second positioning hole group respectively. Each positioning hole group includes two positioning holes. The two positioning holes of the same positioning hole group are arranged on both sides of the opening groove and have the same height. The second positioning hole group is placed below the first positioning hole group; two first positioning pins are provided at both ends of the upper side of the upper arc-shaped baffle plate, and the first positioning pin is inserted into the first positioning hole group from bottom to top; two second positioning pins are provided at both ends of the lower side of the lower arc-shaped baffle plate, and the second positioning pin is inserted into the second positioning hole group from top to bottom.

4. The fixing device for a temperature measuring rod for continuous temperature measurement of a tundish according to claim 1, characterized in that: The positioning hanging arm is provided with an arc-shaped limit plate coaxial with the positioning cylinder, the outer wall of the arc-shaped limit plate is in close contact with the inner wall of the fireproof cylinder, and the arc-shaped limit plate can slide along the inner wall of the fireproof cylinder; the height of the arc-shaped limit plate is greater than the overall height of the cylinder hanging groove.

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