A temperature sensing structure for measuring the temperature of a cathode steel rod of an electrolytic cell

Abstract

The utility model relates to cathode steel stick temperature measurement technical field, a kind of temperature sensing structure for cathode steel stick temperature measurement of electrolytic cell, including U-shaped frame, the one end of U-shaped frame is fixedly connected with support disc, the top of support disc is fixedly connected with first cylinder, the inside coaxial of first cylinder is equipped with second cylinder;Thermocouple, install in the inner chamber bottom of second cylinder, the inner chamber top of second cylinder is equipped with the compression assembly for positioning and fixing of thermocouple.This utility model can provide certain pre-tightening force for the second cylinder as a whole by positioning assembly, when the second cylinder as a whole occurs mechanical shaking due to external factors, second cylinder can still be compressed on the surface of cathode steel stick, so it is conducive to the stable performance of thermocouple temperature measurement work;The installation process of thermocouple is simplified by compression assembly, the installation difficulty of thermocouple is reduced, and it is conducive to the quick positioning installation of thermocouple.

Description

Technical Field

[0001] This utility model relates to the field of cathode steel rod temperature measurement technology, specifically a temperature sensing structure for measuring the temperature of cathode steel rods in electrolytic cells. Background Technology

[0002] The cathode steel rod is a conductive steel rod assembled in the cathode carbon block and used to connect the cathode carbon block and the cathode busbar. In the aluminum electrolysis process, the cathode steel rod is an important component of the electrolytic cell, playing a key role in conductivity and structural support. It is of great significance for improving the overall efficiency and quality of aluminum production. During the operation of the cathode steel rod, the temperature of the cathode steel rod needs to be monitored manually to provide a basis for judging the condition of the electrolytic cell and ensure that the electrolytic cell can operate stably.

[0003] Existing temperature sensing structures for measuring the cathode steel rods in electrolytic cells mostly monitor temperature by installing thermocouples at the base of the rod using magnetic clamps. However, these magnetic clamps gradually lose their magnetism under high temperatures, eventually causing the thermocouples to fall off. Furthermore, if high-temperature adhesive is applied to the outside of the magnetic clamps, the adhesive will gradually harden with changes in temperature and time, resulting in unstable and insecure thermocouple positioning. This makes it difficult to quickly and stably position and fix the thermocouples according to actual conditions, which is detrimental to the temperature monitoring of the cathode steel rods. Utility Model Content

[0004] The purpose of this invention is to provide a temperature sensing structure for measuring the temperature of cathode steel rods in electrolytic cells, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a temperature sensing structure for measuring the temperature of cathode steel rods in an electrolytic cell, comprising:

[0006] A U-shaped frame, one end of which is fixedly connected to a support plate, and the top of the support plate is fixedly connected to a first cylinder, and a second cylinder is coaxially arranged inside the first cylinder;

[0007] Thermocouple is installed at the bottom of the inner cavity of the second cylinder, and a pressing assembly for positioning and fixing the thermocouple is provided at the top of the inner cavity of the second cylinder.

[0008] An internal threaded groove is located inside the support plate. An adjusting stud is spirally connected inside the internal threaded groove. The top of the adjusting stud is provided with a positioning component that can provide pre-tightening force to the second cylinder to improve the overall installation stability of the thermocouple.

[0009] Preferably, the pressing assembly includes a pressing sleeve disposed at the top of the inner cavity of the second cylinder, the bottom of the pressing sleeve being in contact with a thermocouple, and a plurality of mating blocks symmetrically installed on the outer side of the pressing sleeve. A mating groove corresponding to the mating block is formed on the inner wall of the second cylinder, the mating groove being L-shaped, and the mating block being located inside the mating groove.

[0010] Preferably, the second cylinder has a hollow interlayer inside, and the hollow interlayer has an insulation layer inside to reduce the interference of the external ambient temperature on the thermocouple. The insulation layer is made of carbon fiber insulation cotton material.

[0011] Preferably, the inner wall of the second cylinder is provided with a wire hole on one side, and the inner wall of the first cylinder is provided with a wire outlet groove on one side.

[0012] Preferably, the positioning component includes a conical block fixed to the bottom of the second cylinder, a push-pull plate below the conical block, the top end of the adjusting stud penetrating the first cylinder and connected to the push-pull plate, a limit sleeve fixedly connected to the top of the push-pull plate, the conical block located inside the limit sleeve, an annular seat fixedly connected to the outer side of the top end of the conical block, a plurality of tensioning flaps symmetrically arranged on the outer side of the conical block, the bottom end of the tensioning flaps connected to the push-pull plate, and one side of the tensioning flaps contacting the conical block.

[0013] Preferably, each of the tensioning valves has a first groove on the side near the conical block, a first slider is slidably connected inside the first groove, one side of the first slider is connected to the conical block, a plurality of second sliders are symmetrically installed on the outer side of the second cylinder, a second groove corresponding to the second slider is opened on the inner wall of the first cylinder, and the second slider is located inside the second groove.

[0014] Preferably, a clamping pad is fixedly connected to the end of the U-shaped frame away from the support plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention provides a certain pre-tightening force to the second cylinder body through the positioning component. When the second cylinder body experiences mechanical shaking due to external factors, it can still be pressed tightly against the surface of the cathode steel rod, which is beneficial to the stable operation of thermocouple temperature measurement. The pressing component simplifies the thermocouple installation process, reduces the installation difficulty of the thermocouple, and facilitates the quick positioning and installation of the thermocouple. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2This is a schematic diagram of the pressing component structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the first cylindrical body of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the second cylinder of this utility model;

[0021] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. U-shaped frame; 2. Support plate; 3. First cylinder; 4. Second cylinder; 5. Thermocouple; 6. Pressing assembly; 61. Pressing sleeve; 62. Connecting block; 63. Connecting groove; 7. Hollow interlayer; 8. Insulation layer; 9. Internal threaded groove; 10. Adjusting stud; 11. Positioning assembly; 111. Push-pull plate; 112. Limiting sleeve; 113. Conical block; 114. Annular seat; 115. Tensioning flap; 12. First slider; 13. First slide groove; 14. Second slider; 15. Second slide groove; 16. Wire hole; 17. Wire outlet groove; 18. Pressing pad. Detailed Implementation

[0023] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0024] Please see Figure 1-5As shown, a temperature sensing structure for measuring the temperature of cathode steel rods in an electrolytic cell includes a U-shaped frame 1, with a support plate 2 fixedly connected to one end of the U-shaped frame 1. A first cylinder 3 is fixedly connected to the top of the support plate 2, and a second cylinder 4 is coaxially arranged inside the first cylinder 3. A thermocouple 5 is installed at the bottom of the inner cavity of the second cylinder 4. By setting the thermocouple 5, the temperature of the cathode steel rod can be monitored. As a commonly used temperature measuring element in the prior art, it can directly measure the temperature and convert the temperature signal into a thermoelectric potential signal, which is then converted into the temperature of the measured medium by an electrical instrument. A pressing assembly 6 for positioning and fixing the thermocouple 5 is provided at the top of the inner cavity of the second cylinder 4. By setting the pressing assembly 6, the thermocouple 5 can be quickly positioned and installed, thereby simplifying the installation process of the thermocouple 5, reducing the installation difficulty of the thermocouple 5, and helping to reduce the workload of the staff. A threaded groove 9 is located inside the support plate 2. An adjusting stud 10 is spirally connected inside the threaded groove 9. By setting the adjusting stud 10, the height position of the second cylinder 4 can be adjusted, which can drive the second cylinder 4 to rise out from the top opening of the first cylinder 3 and make tight contact with the cathode steel rod to be measured, thus facilitating the subsequent temperature measurement of the cathode steel rod. The top of the adjusting stud 10 is provided with a positioning component 11, which can provide pre-tightening force to the second cylinder 4 to improve the overall installation stability of the thermocouple 5. By setting the positioning component 11, after the operator completes the contact work between the second cylinder 4 and the cathode steel rod using the adjusting stud 10, a certain pre-tightening force is provided to the second cylinder 4. When the second cylinder 4 shakes mechanically due to external factors, it can still be pressed tightly against the surface of the cathode steel rod, which is conducive to the stable operation of the thermocouple 5 temperature measurement.

[0025] The pressing assembly 6 includes a pressing sleeve 61 disposed at the top of the inner cavity of the second cylinder 4. The bottom of the pressing sleeve 61 contacts the thermocouple 5. Multiple mating blocks 62 are symmetrically installed on the outer side of the pressing sleeve 61. A mating groove 63 corresponding to the mating blocks 62 is formed on the inner wall of the second cylinder 4. The mating groove 63 has an L-shaped design, and the mating blocks 62 are located inside the mating groove 63. Figure 1 , Figure 2 and Figure 4 As shown, when positioning and installing thermocouple 5, the operator can first place thermocouple 5 at the bottom of the inner cavity of the second cylinder 4, and then insert and tighten the clamping sleeve 61 into the interior of the second cylinder 4 through the cooperation between the docking groove 63 and the docking block 62. At this time, the clamping sleeve 61 is restricted by the docking block 62 and cannot slide vertically. At the same time, the thermocouple 5 is also tightly pressed by the clamping sleeve 61 at the bottom of the inner cavity of the second cylinder 4. Compared with the common method of fixing thermocouple 5 with bolts and other fasteners, this simplifies the installation process of thermocouple 5, reduces the installation difficulty of thermocouple 5, and facilitates the quick positioning and installation of thermocouple 5.

[0026] The second cylinder 4 has a hollow interlayer 7 inside, and inside the hollow interlayer 7 is an insulation layer 8 to reduce the interference of the external ambient temperature on the thermocouple 5. The insulation layer 8 is made of carbon fiber insulation cotton material. Figure 4 As shown, the insulation layer 8 made of carbon fiber insulation cotton has high temperature stability, low thermal conductivity and corrosion resistance, and performs particularly well in high temperature environments. By setting the insulation layer 8, the interference of the external ambient temperature on the thermocouple 5 can be reduced, so that the thermocouple 5 can better perform the temperature measurement work of the cathode steel rod.

[0027] The inner wall of the second cylinder 4 has a wire hole 16 on one side, and the inner wall of the first cylinder 3 has a wire outlet groove 17 on one side. Figure 3 , Figure 4 As shown, in actual use, the wires connected to the thermocouple 5 can be passed through the wire hole 16 and the wire outlet groove 17 in sequence and connected to the wiring terminal of the external control device. In this way, the detection data of the thermocouple 5 can be transmitted to the external control device for display. It should be noted that the external control device mentioned here is a PLC controller, control panel or other controller with display and control functions.

[0028] The positioning assembly 11 includes a conical block 113 fixed to the bottom of the second cylinder 4. A push-pull plate 111 is provided below the conical block 113. The top end of the adjusting stud 10 passes through the first cylinder 3 and is connected to the push-pull plate 111. A limit sleeve 112 is fixedly connected to the top of the push-pull plate 111. The conical block 113 is located inside the limit sleeve 112. An annular seat 114 is fixedly connected to the outer side of the top end of the conical block 113. Multiple tensioning flaps 115 are symmetrically provided on the outer side of the conical block 113. The bottom end of the tensioning flap 115 is connected to the push-pull plate 111, and one side of the tensioning flap 115 is in contact with the conical block 113. Figure 3 , Figure 4 and Figure 5 As shown, after the operator uses the adjusting stud 10 to complete the contact work between the second cylinder 4 and the cathode steel rod, the top of the second cylinder 4 is in contact with the cathode steel rod. If the second cylinder 4 shakes mechanically due to external factors, multiple elastic tensioning valves 115 can be used to force the second cylinder 4 to slide upward from the outside of the conical block 113, thereby providing a certain pre-tightening force to the second cylinder 4, so that the second cylinder 4 is still pressed tightly on the surface of the cathode steel rod. This is conducive to the stable operation of the thermocouple 5 temperature measurement.

[0029] Each tensioning valve 115 has a first groove 13 on one side near the conical block 113. A first slider 12 is slidably connected inside the first groove 13, and one side of the first slider 12 is connected to the conical block 113. Multiple second sliders 14 are symmetrically installed on the outer side of the second cylinder 4. A second groove 15 corresponding to the second slider 14 is formed on the inner wall of the first cylinder 3, and the second slider 14 is located inside the second groove 15. Figure 3 , Figure 4 and Figure 5 As shown, by setting the first slider 12 and the first slide groove 13, the fit between the conical block 113 and the tensioning valve 115 can be made tighter and smoother, which is conducive to improving the working stability of the positioning component 11. Furthermore, by setting the second slider 14 and the second slide groove 15, the second cylinder 4 can be prevented from rotating together with the adjusting stud 10, which is conducive to the lifting and lowering of the second cylinder 4.

[0030] A clamping pad 18 is fixedly connected to the end of the U-shaped frame 1 away from the support plate 2, such as Figure 1 , Figure 2 As shown, by setting the clamping pad 18 and cooperating with the clamping sleeve 61, the cathode steel rod to be measured can be clamped from both sides, which facilitates the subsequent temperature measurement work.

[0031] Working principle: First, the operator uses the adjusting stud 10 to raise the second cylinder 4 from the top opening of the first cylinder 3 and make it tightly contact the cathode steel rod to be measured. At this time, the cathode steel rod to be measured is located between the clamping pad 18 and the clamping sleeve 61. Then, the positioning component 11 can provide a certain pre-tightening force to the second cylinder 4. When the second cylinder 4 shakes mechanically due to external factors, it can still be pressed tightly on the surface of the cathode steel rod. This is conducive to the stable operation of the thermocouple 5 for temperature measurement. At the same time, the pressing component 6 simplifies the installation process of the thermocouple 5, reduces the installation difficulty of the thermocouple 5, and facilitates the quick positioning and installation of the thermocouple 5.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A temperature sensing structure for measuring the temperature of cathode steel rods in an electrolytic cell, characterized in that, include: U-shaped frame (1), one end of which is fixedly connected to a support plate (2), and the top of the support plate (2) is fixedly connected to a first cylinder (3), and the inside of the first cylinder (3) is coaxially provided with a second cylinder (4). Thermocouple (5) is installed at the bottom of the inner cavity of the second cylinder (4), and a pressing assembly (6) for positioning and fixing the thermocouple (5) is provided at the top of the inner cavity of the second cylinder (4). An internal thread groove (9) is provided inside the support plate (2). An adjusting stud (10) is spirally connected inside the internal thread groove (9). The top of the adjusting stud (10) is provided with a positioning component (11) that can provide preload to the second cylinder (4) to improve the overall installation stability of the thermocouple (5).

2. The temperature sensing structure for measuring the temperature of cathode steel rods in an electrolytic cell according to claim 1, characterized in that: The pressing assembly (6) includes a pressing sleeve (61) disposed at the top of the inner cavity of the second cylinder (4). The bottom of the pressing sleeve (61) is in contact with the thermocouple (5). Multiple docking blocks (62) are symmetrically installed on the outer side of the pressing sleeve (61). A docking groove (63) corresponding to the docking block (62) is opened on the inner wall of the second cylinder (4). The docking groove (63) is L-shaped, and the docking block (62) is located inside the docking groove (63).

3. The temperature sensing structure for measuring the temperature of cathode steel rods in an electrolytic cell according to claim 1, characterized in that: The second cylinder (4) has a hollow interlayer (7) inside, and the hollow interlayer (7) has an insulation layer (8) inside to reduce the interference of the external ambient temperature on the thermocouple (5). The insulation layer (8) is made of carbon fiber insulation cotton material.

4. The temperature sensing structure for measuring the temperature of cathode steel rods in an electrolytic cell according to claim 1, characterized in that: The second cylinder (4) has a wire hole (16) on one side of its inner wall, and the first cylinder (3) has a wire outlet groove (17) on one side of its inner wall.

5. The temperature sensing structure for measuring the temperature of cathode steel rods in an electrolytic cell according to claim 1, characterized in that: The positioning component (11) includes a conical block (113) fixed to the bottom of the second cylinder (4). A push-pull plate (111) is provided below the conical block (113). The top end of the adjusting stud (10) passes through the first cylinder (3) and is connected to the push-pull plate (111). A limit sleeve (112) is fixedly connected to the top of the push-pull plate (111). The conical block (113) is located inside the limit sleeve (112). An annular seat (114) is fixedly connected to the outer side of the top end of the conical block (113). Multiple tensioning flaps (115) are symmetrically provided on the outer side of the conical block (113). The bottom end of the tensioning flap (115) is connected to the push-pull plate (111). One side of the tensioning flap (115) is in contact with the conical block (113).

6. The temperature sensing structure for measuring the temperature of cathode steel rods in an electrolytic cell according to claim 5, characterized in that: Each of the tensioning valves (115) has a first groove (13) on the side near the conical block (113). A first slider (12) is slidably connected inside the first groove (13). One side of the first slider (12) is connected to the conical block (113). A plurality of second sliders (14) are symmetrically installed on the outer side of the second cylinder (4). A second groove (15) corresponding to the second slider (14) is opened on the inner wall of the first cylinder (3). The second slider (14) is located inside the second groove (15).

7. The temperature sensing structure for measuring the temperature of cathode steel rods in an electrolytic cell according to claim 1, characterized in that: A pressure pad (18) is fixedly connected to the end of the U-shaped frame (1) away from the support plate (2).

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