Temperature measuring system for aluminum electrolysis cell

Abstract

The utility model particularly discloses a temperature measuring system for an aluminum electrolysis cell, which comprises the aluminum electrolysis cell, a temperature measuring element and a temperature measuring circuit, a stud is fixed at a temperature measuring point of the aluminum electrolysis cell, the temperature measuring element is provided with a mounting hole matched and corresponding to the stud, the stud is in threaded connection with a nut, and the nut is connected with the temperature measuring circuit. The temperature measuring element sleeves the stud through the mounting hole and is attached and fixed to a temperature measuring point of the aluminum electrolysis cell based on the nut; and one end, far away from the stud, of the temperature measuring element is provided with a high-temperature-resistant lead connected with the temperature measuring circuit and used for leading out temperature data conducted by the temperature measuring element and conducting the temperature data to the temperature measuring circuit. According to the utility model, the stud is fixed on the temperature measuring point in a fusion welding manner, and the temperature measuring element is fixed on the stud through the nut and clings to the temperature measuring point, so that the temperature measuring element is effectively prevented from loosening and falling off, and meanwhile, the contact area of the temperature measuring element can be ensured, so that the temperature response speed of the temperature measuring element is high; the temperature sensor has the characteristics of stable temperature measurement performance, long service life and high temperature measurement accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum electrolysis equipment, in particular to a temperature measurement system for an aluminum electrolysis cell. Background Art

[0002] Aluminum electrolysis cell is the main production equipment of aluminum electrolysis. Aluminum electrolysis is the process of converting aluminum in alumina into metallic aluminum in an aluminum electrolysis cell. The conversion principle is to use cryolite and alumina melt as electrolytes, carbon materials as two poles, direct current is introduced into the electrolyte and aluminum liquid layer through the anode, and then discharged from the cathode.

[0003] At present, the temperature of the electrolyte and aluminum liquid in the aluminum electrolytic cell is as high as 950°C. Even if it is transmitted to the tank shell through the insulation layer, the temperature is still about 400°C. When the insulation layer is damaged, the temperature at the tank shell will rise abnormally and even cause a furnace leakage accident, which may cause a large impact on production and economic losses. In view of this, it is necessary to detect the temperature of the aluminum electrolytic cell in real time. In the prior art, the temperature measuring element is generally installed at the temperature measurement point of the aluminum electrolytic cell by magnetic attraction, bonding or clamping. The above method has the disadvantages of easy falling off, loosening and low measurement accuracy. Therefore, the present application provides an aluminum electrolytic cell temperature measurement system to solve the above technical problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the above-mentioned background technology, and provide an aluminum electrolysis cell temperature measurement system, including an aluminum electrolysis cell, a temperature measuring element and a temperature measurement circuit, wherein a stud is fixed at the temperature measurement point of the aluminum electrolysis cell, the temperature measuring element is provided with a mounting hole corresponding to the stud, a nut is threadedly connected to the stud, the temperature measuring element is sleeved on the stud through the mounting hole and is fixed to the temperature measurement point of the aluminum electrolysis cell based on the nut, and a high-temperature resistant lead wire connected to the temperature measurement circuit is provided at one end of the temperature measuring element away from the stud for leading out the temperature data conducted by the temperature measuring element and conducting it to the temperature measurement circuit.

[0005] Preferably, the stud is connected to the temperature measuring point of the aluminum electrolysis cell by fusion welding.

[0006] Preferably, a spring washer is provided between the nut and the temperature measuring element.

[0007] Preferably, the temperature measuring element comprises an integrally formed heat-conducting connecting piece and a temperature measuring element body, and the temperature measuring element is fixedly connected to the stud via a mounting hole provided on the heat-conducting connecting piece.

[0008] Preferably, the temperature measurement point of the aluminum electrolysis cell is a high thermal conductivity protective shell.

[0009] Compared with the prior art, the utility model provides an aluminum electrolytic cell temperature measuring system, which fixes a stud on a temperature measurement point by a fusion welding connection, and a temperature measuring element with a mounting hole is fixed on the stud by a nut and close to the temperature measurement point, which can effectively prevent the temperature measuring element from loosening and falling off from the temperature measurement point, and at the same time can also ensure the contact area between the temperature measuring element and the temperature measurement point, so that the temperature response speed of the temperature measuring element is fast, and the system has the characteristics of stable temperature measurement performance, long service life and high temperature measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The utility model is a structural schematic diagram of a temperature measuring system for an aluminum electrolytic cell.

[0011] In the figure: 1. Aluminum electrolytic cell shell, 2. Thermal conductive connecting piece, 3. Spring washer, 4. Nut, 5. Stud, 6. Temperature measuring element body, 7. High temperature resistant lead wire. DETAILED DESCRIPTION

[0012] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0013] like Figure 1 As shown, the utility model provides a temperature measurement system for an aluminum electrolytic cell, comprising an aluminum electrolytic cell 1, a temperature measuring element and a temperature measurement circuit, wherein a stud 5 is fixed at the temperature measurement point of the aluminum electrolytic cell 1, the temperature measuring element is provided with a mounting hole corresponding to the stud 5, a nut 4 is threadedly connected to the stud 5, the temperature measuring element is sleeved on the stud 5 through the mounting hole and is fixed to the temperature measurement point of the aluminum electrolytic cell 1 based on the nut 4, and a high-temperature resistant lead 7 connected to the temperature measurement circuit is provided at one end of the temperature measuring element away from the stud 5 for leading out the temperature data conducted by the temperature measuring element and conducting it to the temperature measurement circuit.

[0014] In this embodiment, the temperature measurement point of the aluminum electrolysis cell 1 is a high thermal conductivity protective shell. Specifically, first, a suitable position is selected on the shell or cathode steel rod of the aluminum electrolysis cell 1 as the temperature measurement point, and then the rust or protective coating on its surface is polished off to improve the heat transfer efficiency.

[0015] In this embodiment, by fixing the stud 5 on the temperature measurement point, the temperature measuring element with the mounting hole is fixed on the stud 5 by the nut 4 matching the stud 5, so that the temperature measuring element and the temperature measurement point are fitted and fixed, which can ensure that the temperature measuring element is stably fixed on the temperature measurement point and prevent the temperature measuring element from loosening and falling off; and ensure that there is a sufficient contact area between the temperature measuring element and the temperature measurement point. The temperature measuring element can respond to the temperature quickly and transmit the temperature signal to the temperature measurement circuit via the high temperature resistant lead 7, which has the characteristics of stable temperature measurement performance, long component service life and high temperature measurement accuracy.

[0016] like Figure 1 As shown, the stud 5 is connected to the temperature measuring point of the aluminum electrolysis cell 1 by fusion welding.

[0017] In this embodiment, the stud 5 is fixedly connected to the temperature measuring point of the aluminum electrolytic cell 1 by fusion welding. Specifically, the stud 5 is first pressed against the rust-removed surface of the temperature measuring point, and then a welding machine is used to pass an instantaneous large current for welding. After the welding point is cooled, the stud 5 is loosened to achieve a fusion welding connection between the stud 5 and the temperature measuring point of the aluminum electrolytic cell 1. Finally, the mounting hole of the temperature measuring element is put on the stud 5 and fixed with a nut 4.

[0018] like Figure 1 As shown, a spring washer 3 is provided between the nut 4 and the temperature measuring element.

[0019] In this embodiment, based on the spring washer 3 arranged between the nut 4 and the temperature measuring element, on the one hand, the connection reliability between the nut 4 and the temperature measuring element is ensured, and on the other hand, wear caused by direct contact between the nut 4 and the temperature measuring element can be avoided, thereby extending the service life of the component to a certain extent.

[0020] like Figure 1 As shown, the temperature measuring element includes an integrally formed heat-conducting connecting piece 2 and a temperature measuring element body 6 , and the temperature measuring element is fixedly connected to the stud 5 via a mounting hole provided on the heat-conducting connecting piece 2 .

[0021] In this embodiment, the temperature measuring element is configured as an integrally formed thermally conductive connecting piece 2 and a temperature measuring element body 6. This can not only keep the temperature measuring part of the temperature measuring element away from the high temperature zone of the temperature measurement point, thereby extending the service life of the device, but also utilize the mounting holes provided on the thermally conductive connecting piece 2 to fix it on the stud 5 in close contact with the temperature measurement point. By appropriately increasing the area of ​​the thermally conductive connecting piece 2, the contact area between the thermally conductive connecting piece 2 and the temperature measurement point can be increased, thereby improving the temperature response speed of the temperature measuring element to a certain extent, thereby improving the temperature measurement accuracy of the temperature measurement system.

[0022] The above is a detailed introduction to the aluminum electrolytic cell temperature measurement system provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A temperature measurement system for an aluminum electrolytic cell, characterized in that: The invention comprises an aluminum electrolytic cell (1), a temperature measuring element and a temperature measuring circuit, wherein a stud (5) is fixed at a temperature measuring point of the aluminum electrolytic cell (1), a mounting hole matching the stud (5) is provided on the temperature measuring element, a nut (4) is threadedly connected to the stud (5), the temperature measuring element is sleeved on the stud (5) through the mounting hole and is fixed to the temperature measuring point of the aluminum electrolytic cell (1) based on the nut (4), and a high-temperature resistant lead (7) connected to the temperature measuring circuit is provided at one end of the temperature measuring element away from the stud (5) for leading out temperature data conducted by the temperature measuring element and conducting it to the temperature measuring circuit.

2. The aluminum electrolysis cell temperature measurement system according to claim 1, characterized in that: The stud (5) is connected to the temperature measuring point of the aluminum electrolysis cell (1) by fusion welding.

3. The aluminum electrolysis cell temperature measurement system according to claim 2, characterized in that: A spring pad (3) is provided between the nut (4) and the temperature measuring element.

4. The aluminum electrolytic cell temperature measurement system according to claim 1, characterized in that: The temperature measuring element comprises an integrally formed heat-conducting connecting piece (2) and a temperature measuring element body (6); the temperature measuring element is fixedly connected to the stud (5) via a mounting hole provided on the heat-conducting connecting piece (2).

5. The aluminum electrolytic cell temperature measurement system according to claim 1, characterized in that: The temperature measurement point of the aluminum electrolysis cell (1) is a high thermal conductivity protective shell.

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