Direct-current bus disconnecting link temperature monitoring device, voltage conversion system and electrolytic aluminum system
By using a contact-type temperature sensor closely integrated with the DC bus disconnect switch in the aluminum electrolysis system, combined with a control module and an alert module, the problems of lag and environmental interference in DC bus disconnect switch temperature monitoring are solved, achieving efficient and automated temperature monitoring and ensuring equipment safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNNAN YONGXIN ALUMINUM
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-24
AI Technical Summary
In the existing technology, the temperature monitoring of the DC bus switch in the electrolytic aluminum process relies on a manual infrared thermometer, which has the problems of detection lag, susceptibility to environmental interference, and insufficient accuracy, resulting in the inability to detect temperature abnormalities in a timely manner and affecting equipment safety.
By using a contact-type temperature sensor that is closely fitted to the contacts or fingers of the DC bus disconnect switch, combined with a control module and an alert module, automated and accurate temperature acquisition and alarm alerts are achieved, avoiding manual intervention.
It improves the accuracy and timeliness of temperature monitoring, reduces environmental interference, ensures equipment safety, and enhances the stability and reliability of the power system.
Smart Images
Figure CN224163266U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of DC bus disconnector monitoring technology, and in particular to a DC bus disconnector temperature monitoring device, a voltage conversion system, and an electrolytic aluminum system. Background Technology
[0002] The electrolytic aluminum process requires direct current (DC). After the rectifier transformer converts the alternating current (AC) to DC, the DC is delivered to the electrolytic cell through the DC bus switch. Due to process requirements, the current through the DC bus switch is very large, which often leads to abnormal temperature rises, resulting in unplanned shutdowns and, in severe cases, serious damage to the rectifier transformer. Therefore, temperature monitoring is necessary.
[0003] Currently, temperature monitoring in aluminum electrolysis mainly relies on manual labor, using infrared thermometers to periodically check the temperature of the DC bus disconnect switch. However, this method is labor-intensive, may miss some checks, and there is usually a certain time interval between two consecutive temperature checks, during which the temperature may be too high, resulting in a certain lag in temperature monitoring and an inability to detect and handle problems in a timely manner. In addition, infrared thermometers are susceptible to environmental interference during use. During aluminum electrolysis, when the ambient temperature is high, the temperature of the DC bus disconnect switch itself will rise due to the increase in ambient temperature, and the difference between the normal operating temperature of the DC bus disconnect switch and the ambient temperature will become smaller, affecting the infrared thermometer's judgment of whether the temperature is abnormal. Furthermore, the distance between the infrared thermometer and the test position is also difficult to control. An inappropriate distance will also affect the accuracy of temperature monitoring.
[0004] Therefore, how to provide a more effective DC bus disconnector temperature monitoring solution is an urgent problem to be solved. Utility Model Content
[0005] In view of this, the present invention provides a DC bus disconnector temperature monitoring device, a voltage conversion system and an electrolytic aluminum system, which has higher temperature acquisition accuracy, is less susceptible to environmental interference, has a high degree of automation, facilitates continuous temperature acquisition and has high temperature monitoring efficiency.
[0006] To address the aforementioned technical problems, this application provides a DC bus disconnect switch temperature monitoring device, applied to a voltage conversion system. The voltage conversion system includes a rectifier transformer module and a DC bus disconnect switch connected in sequence. The DC bus disconnect switch includes contacts and contact fingers for contacting or separating from the contacts. The DC bus disconnect switch temperature monitoring device includes a contact-type temperature sensor, a control module, and an indication module.
[0007] The sensing contact surface of the contact temperature sensor is used to fit with the finger or the contact head, and the output end is connected to the control module to collect the temperature at the position where it fits with the sensing contact surface and send it to the control module.
[0008] The prompting module is connected to the control module and is used to output a prompting signal when it receives an alarm control signal sent by the control module based on the temperature.
[0009] Furthermore, the prompting module includes a voice broadcast module and / or a light-emitting module.
[0010] Furthermore, the sensing contact surface of the contact temperature sensor is attached to the finger or the contact head via a heat-conducting component.
[0011] Furthermore, the thermally conductive component is a thermally conductive adhesive.
[0012] Furthermore, the control module includes a wireless communication module, a data gateway, and a controller;
[0013] The contact temperature sensor, the wireless communication module, the data gateway, the controller, and the prompting module are connected in sequence.
[0014] Furthermore, the contact temperature sensor is a ruthenium oxide temperature sensor, a capacitive temperature sensor, or a fluorescent fiber optic sensor.
[0015] Furthermore, the number of the fingers is N, where N is an integer greater than 1;
[0016] The number of contact temperature sensors is N, and the sensing contact surface of the i-th contact temperature sensor is in contact with the i-th touch finger, where 1≤i≤N and i is an integer.
[0017] Furthermore, the number of the fingers is N, where N is an integer greater than 1;
[0018] The number of contact temperature sensors is M. The sensing contact surface of the j-th contact temperature sensor is attached to the contact point corresponding to the j-th contact finger. 1≤j≤M and j is an integer; M is not greater than N and M is a positive integer.
[0019] To solve the above-mentioned technical problems, this application also provides a voltage conversion system, including a rectifier transformer module and a DC bus disconnect switch, and also includes a DC bus disconnect switch temperature monitoring device as described above;
[0020] The AC power supply, the rectifier transformer module, and the DC bus disconnect switch are connected in sequence. The DC bus disconnect switch is also connected to the DC bus disconnect switch temperature monitoring device.
[0021] To address the aforementioned technical problems, this application also provides an electrolytic aluminum system, including an electrolytic cell and a voltage conversion system as described above, wherein the output terminal of the voltage conversion system is connected to the power supply input terminal of the electrolytic cell.
[0022] This application provides a DC bus disconnect switch temperature monitoring device, a voltage conversion system, and an electrolytic aluminum system. The voltage conversion system includes a rectifier transformer module and a DC bus disconnect switch connected in sequence. The DC bus disconnect switch includes contacts and contact fingers for contacting or separating from the contacts. The DC bus disconnect switch temperature monitoring device includes a contact-type temperature sensor, a control module, and an alert module. The sensing contact surface of the contact-type temperature sensor is used to contact the contact fingers or the contacts, and its output terminal is connected to the control module to collect the temperature at the location where the sensing contact surface is in contact and send it to the control module. The alert module is connected to the control module and outputs an alert signal when it receives an alarm control signal based on temperature from the control module. It is evident that this solution uses a contact-type temperature sensor, which, compared to the currently used non-contact infrared thermometers, provides higher accuracy in temperature acquisition and is less susceptible to environmental interference, thus facilitating accurate and timely alarm alerts. Furthermore, the temperature monitoring process requires no manual intervention, has a high degree of automation, and allows for continuous temperature acquisition to ensure timely detection of temperature anomalies and alerts via the alert module. This high temperature monitoring efficiency avoids potential omissions during manual inspections and is beneficial for practical applications.
[0023] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description
[0024] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0025] Figure 1 A schematic diagram of the structure of a DC bus disconnector temperature monitoring device provided by this utility model;
[0026] Figure 2 A schematic diagram of another DC bus disconnector temperature monitoring device provided by this utility model;
[0027] Figure 3 A schematic diagram of another DC bus disconnector temperature monitoring device provided by this utility model. Detailed Implementation
[0028] The core of this utility model is to provide a DC bus disconnector temperature monitoring device, a voltage conversion system, and an electrolytic aluminum system. The temperature acquisition accuracy is higher, it is not easily affected by environmental interference, it has a high degree of automation, it is conducive to continuous temperature acquisition, and the temperature monitoring efficiency is high.
[0029] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.
[0030] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0031] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a DC bus disconnector temperature monitoring device provided by this utility model.
[0032] This DC bus disconnect switch temperature monitoring device is applied to a voltage conversion system. The voltage conversion system includes a rectifier transformer module and a DC bus disconnect switch connected in sequence. The DC bus disconnect switch includes contacts and contact fingers for contacting or separating from the contacts. The DC bus disconnect switch temperature monitoring device includes a contact temperature sensor 3, a control module 4, and an indication module 5.
[0033] The sensing contact surface of the contact temperature sensor 3 is used to fit with a finger or a contact head, and the output end is connected to the control module 4 to collect the temperature at the position where it fits with the sensing contact surface and send it to the control module 4.
[0034] The prompting module 5 is connected to the control module 4 and is used to output a prompting signal when it receives an alarm control signal sent by the control module 4 based on temperature.
[0035] In this embodiment, considering that the DC bus disconnect switch has the characteristics of low voltage but high current, the higher the current, the more serious the heat generation. During its operation, the contacts are stationary, and the contact fingers will separate from the contacts as the disconnect switch opens, or contact the contacts as the disconnect switch closes. Poor contact between the contacts and contact fingers, or aging of the contacts and / or contact fingers, will lead to heat generation. That is, the heat generation point of the DC bus disconnect switch mainly occurs at the location of the contact fingers or contacts. Based on this, the above-mentioned DC bus disconnect switch temperature monitoring device is set up.
[0036] Specifically, infrared thermometers in related technologies are essentially non-contact temperature acquisition devices, which are easily affected by the surrounding environment. Therefore, the temperature monitoring device of this application uses a contact temperature sensor 3. Compared with non-contact infrared thermometers, because its sensing contact surface is directly in contact with the probe or finger, it has higher accuracy in temperature acquisition and is less susceptible to environmental interference. More specifically, the contact temperature sensor 3 here can be a thermocouple type sensor, a thermistor type sensor, or a sensor with strong magnetic resistance as described in the following embodiments. No particular limitation is made here, and it can be flexibly set according to the installation conditions of the actual application site.
[0037] In terms of implementation principle, the contact temperature sensor 3 can collect the temperature at the location where it is in contact with its sensing surface. Specifically, the temperature can be collected according to a preset sampling period. The preset sampling period can be flexibly set according to actual needs. Preferably, the preset sampling period can be set to be relatively short in order to continuously collect the temperature and facilitate timely detection of any temperature abnormalities.
[0038] For control module 4, after acquiring the temperature, it can control the prompting module 5 to output a prompt signal when an overheating situation occurs at any bonding position. Specifically, control module 4 determines that an overheating situation has occurred when the temperature at any bonding position exceeds a preset temperature threshold, and then outputs an alarm control signal to prompting module 5 to issue an alarm. Furthermore, control module 4 can also subtract the temperature acquired at time t-1 from the temperature acquired at time t to obtain the temperature difference. If this temperature difference is determined to be outside the preset allowable temperature fluctuation range, it is considered that there is poor contact or aging of the contact at that bonding position. In this case, an alarm control signal can also be output to control prompting module 5 to output a prompt signal, allowing technicians to promptly grasp the situation.
[0039] Furthermore, the DC bus disconnect switch here can also be a high-power disconnect switch or switch using DC power supply, without special limitation; the DC bus disconnect switch includes one contact finger and N contacts, where N may vary depending on the type or model of the DC bus disconnect switch. The contact-type temperature sensor 3 can also be configured as multiple, as described in the following embodiments, which will not be repeated here. It should also be noted that... Figure 1 Due to the limitations of the image display focus, the illustration of the contact temperature sensor 3 and the contact finger or contact head is temporarily omitted, and the focus is on showing the connection between the contact temperature sensor 3, the control module 4 and the prompting module 5.
[0040] The sensing contact surface of the contact temperature sensor 3 should be in close contact with the contact finger or contact head to ensure more accurate temperature acquisition. Since the DC bus disconnect switch is made of metal, a magnetic clamp can be used to install the contact temperature sensor 3 at the designated position (i.e., the position of the contact head or contact finger), so that its sensing contact surface is in close contact with the designated position. The advantage of the magnetic clamp installation method is that it can be quickly installed and removed, and can be directly attached to the designated position. Of course, depending on the type of contact temperature sensor 3, bolts can also be used to install the contact temperature sensor 3. There is no particular limitation here, and it can be flexibly set according to the actual application situation.
[0041] It is worth noting that since the contact finger moves in tandem with the opening and closing of the DC bus disconnect switch, the installation position of the contact temperature sensor 3 is outside the operating range of the contact finger. That is, its installation position is one that does not affect the movement of the contact finger, thus ensuring that the placement of the contact temperature sensor 3 does not affect the opening and closing of the DC bus disconnect switch. Furthermore, to achieve redundancy and ensure reliable temperature monitoring of the contact finger and its corresponding contact at the same temperature detection point, if cost permits, contact temperature sensors 3 can be installed at both the contact finger and its corresponding contact at the same temperature detection point. This avoids the impact of one sensor malfunctioning on temperature monitoring at that location.
[0042] It is understandable that the rectifier transformer module can be connected to multiple DC bus disconnect switches. Taking the electrolytic aluminum scenario as an example, the rectifier transformer module is a rectifier transformer, and each rectifier transformer is connected to 4 DC bus disconnect switches. The aforementioned contact temperature sensor 3 is set for each DC bus disconnect switch. Multiple contact temperature sensors 3 are connected to one of the control modules 4. When the control module 4 determines that the temperature collected at each location is abnormal, the control prompt module 5 outputs a prompt signal, thereby realizing continuous and reliable temperature monitoring at multiple locations.
[0043] In summary, this application provides a DC bus disconnector temperature monitoring device. This solution employs a contact temperature sensor 3, which, compared to currently used non-contact infrared thermometers, offers higher accuracy in temperature acquisition and is less susceptible to environmental interference, thus facilitating accurate and timely alarm notifications. Furthermore, the temperature monitoring process requires no manual intervention, exhibiting a high degree of automation and enabling continuous temperature acquisition to ensure timely detection of temperature anomalies and notification via the alert module 5. This high-efficiency temperature monitoring avoids potential omissions during manual inspections, ensuring the DC bus disconnector remains in optimal operating condition. This reduces operational risks in the voltage conversion system, improves its operational stability, and enhances the overall reliability and stability of the power system, making it suitable for practical applications.
[0044] Based on the above embodiments:
[0045] In some embodiments, the prompting module 5 includes a voice broadcasting module and / or a light-emitting module.
[0046] Specifically, the voice broadcast module is used for voice output to realize temperature abnormality alarm. The voice broadcast module includes, but is not limited to, a speaker. The light-emitting module is used to emit light when the temperature is abnormal and not emit light when the temperature is normal. The light-emitting module includes, but is not limited to, LED light-emitting modules (Light Emitting Diodes). No special limitation is made here.
[0047] In some embodiments, the sensing contact surface of the contact temperature sensor 3 is attached to a finger or a contact head via a heat-conducting component.
[0048] Specifically, considering that there are tiny bumps or oxide layers (such as metal surfaces) at both the contact temperature sensor 3 and the target location to be bonded (i.e., the location of the finger or contact), a heat-conducting component is provided to ensure that the sensing contact surface can be tightly bonded to the finger or contact, so as to ensure more accurate temperature acquisition.
[0049] In some embodiments, the thermally conductive component is thermally conductive adhesive.
[0050] Specifically, the application of thermally conductive adhesive helps to fill microscopic gaps, form a continuous thermal conduction path, reduce contact thermal resistance, and avoid interruptions in heat transfer, thereby improving temperature response speed and accuracy.
[0051] In some embodiments, the control module 4 includes a wireless communication module 41, a data gateway 42, and a controller 43;
[0052] The contact temperature sensor 3, wireless communication module 41, data gateway 42, controller 43 and prompting module 5 are connected in sequence.
[0053] Specifically, the contact temperature sensor 3 converts the collected temperature physical quantity into a corresponding electrical signal and outputs it to the wireless communication module 41. The wireless communication module 41 converts the received electrical signal into a corresponding digital signal and transmits it externally via wireless communication. The data gateway 42 acts as a bridge for wireless communication, receiving the digital signals corresponding to the temperature at each location sent by the wireless communication module 41, performing data aggregation, processing, and protocol operations to transmit the data to the controller 43 after unifying the data format. The controller 43 here includes, but is not limited to, a host computer. It is understandable that after the temperature data is uploaded to the host computer, technicians can also view the temperature data collected at various time points according to application requirements.
[0054] It should be noted that the number of wireless communication modules 41 can be flexibly set according to the number of contact temperature sensors 3 to be connected, and no special limitation is made here; and the wireless communication modules 41 can be placed in a position close to the contact temperature sensors 3 for easy connection; in addition, the parameters of the wireless communication modules 41 can be pre-configured, such as setting the wireless communication frequency, network ID, data transmission rate, etc., so that they can establish a correct communication connection with the data gateway 42.
[0055] Furthermore, the data gateway 42 can be installed in the monitoring center or in the communication equipment room near the DC bus disconnect switch, ensuring a stable power supply and good network connection. The data gateway 42 can also be initialized, configuring communication parameters for communication with the wireless communication module 41 and connection parameters with the host computer, establishing a data transmission channel. Additionally, when the number of contact temperature sensors 3 to be connected is N, S wireless communication modules 41, one data gateway 42, and one controller 43 can be configured, where S is a positive integer less than N, and its specific value is set according to the connectable ports provided by the wireless communication module 41. Please refer to [reference needed]. Figure 2 , Figure 2 This is a schematic diagram of another DC bus disconnector temperature monitoring device provided by this utility model. Figure 2 The diagram uses N=8 and S=2 as an example. Since the contact temperature sensor 3 and the wireless communication module 41 can be connected by wired communication or wireless communication, the connection between the two is represented by a dotted line. The wireless communication module 41 and the data gateway 42 are connected by wireless communication, so the connection between the two is represented by a dashed line.
[0056] In some embodiments, the contact temperature sensor 3 is a ruthenium oxide temperature sensor, a capacitive temperature sensor, or a fluorescent fiber optic sensor.
[0057] Specifically, considering that the positive and negative busbars corresponding to the DC bus disconnect switch will generate strong magnetic fields, in order to achieve temperature acquisition in such a strong magnetic field interference environment, the contact temperature sensor 3 is a contact temperature sensor 3 with strong electromagnetic interference resistance. It can be set as a ruthenium oxide temperature sensor, a capacitor temperature sensor, or a fluorescent fiber optic sensor to ensure reliable acquisition of temperature at the contact position.
[0058] Please refer to Figure 3 , Figure 3 A schematic diagram of another DC bus disconnector temperature monitoring device provided by this utility model.
[0059] In some embodiments, the number of fingers 2 is N, where N is an integer greater than 1;
[0060] There are N contact temperature sensors 3. The sensing contact surface of the i-th contact temperature sensor 3 is in contact with the i-th touch finger 2, where 1≤i≤N and i is an integer.
[0061] Specifically, when the sensing contact surface of the contact temperature sensor 3 is used to contact the finger 2, a contact temperature sensor 3 is set up for each finger 2 in a one-to-one correspondence. This facilitates better determination of the temperature at each contact point, resulting in better temperature monitoring. Please refer to [reference needed]. Figure 3 , Figure 3 Taking N=16 as an example, the diagram shows the setting of corresponding contact temperature sensors 3 at the location of each contact finger 2. It can be seen that the contact surface 11 of the contact 1 is the end face of the contact finger 2 that actually contacts the contact 1 when the DC bus switch is closed.
[0062] In addition, given the limited cost, a contact temperature sensor 3 can be set at intervals of a certain number of the N fingers 2, without any particular limitation.
[0063] In some embodiments, the number of fingers 2 is N, where N is an integer greater than 1;
[0064] There are M contact temperature sensors 3. The sensing contact surface of the j-th contact temperature sensor 3 is attached to the contact 1 corresponding to the j-th contact finger 2. 1≤j≤M and j is an integer; M is not greater than N and M is a positive integer.
[0065] Specifically, the sensing contact surface of the contact temperature sensor 3 is used to fit with the contact 1. When M=N, the contact temperature sensor 3 is set one by one for the contact 1 corresponding to each contact finger 2. When M is less than N, M target positions can be selected in advance from the contact 1 corresponding to N contact fingers 2, and then the contact temperature sensor 3 is set only at these target positions.
[0066] This utility model also provides a voltage conversion system, including a rectifier transformer module and a DC bus disconnect switch, and also includes a DC bus disconnect switch temperature monitoring device as described above;
[0067] The AC power supply, rectifier transformer module, and DC bus disconnect switch are connected in sequence. The DC bus disconnect switch is also connected to the DC bus disconnect switch temperature monitoring device.
[0068] For a description of the voltage conversion system provided in this application, please refer to the embodiment of the DC bus disconnector temperature monitoring device described above; it will not be repeated here. It is understood that the input terminal of the rectifier transformer module is the input terminal of the voltage conversion system, used to connect to the AC power supply, and the output terminal of the DC bus disconnector is the output terminal of the voltage conversion system, used to connect to the power input terminal of the subsequent electrical equipment requiring DC power (such as the electrolytic cell in the following embodiment).
[0069] This utility model also provides an electrolytic aluminum system, including an electrolytic cell and a voltage conversion system as described above, wherein the output terminal of the voltage conversion system is connected to the power supply input terminal of the electrolytic cell.
[0070] For a description of the electrolytic aluminum system provided in this application, please refer to the above-described embodiment of the DC bus disconnector temperature monitoring device; it will not be repeated here.
[0071] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0072] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.
[0073] It should also be noted that, in this specification, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion; the above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A DC bus disconnector temperature monitoring device, characterized in that, The device is applied to a voltage conversion system, which includes a rectifier transformer module and a DC bus disconnect switch connected in sequence. The DC bus disconnect switch includes contacts and contact fingers for contacting or separating from the contacts. The DC bus disconnect switch temperature monitoring device includes a contact temperature sensor, a control module, and an indication module. The sensing contact surface of the contact temperature sensor is used to fit with the finger or the contact head, and the output end is connected to the control module to collect the temperature at the position where it fits with the sensing contact surface and send it to the control module. The prompting module is connected to the control module and is used to output a prompting signal when it receives an alarm control signal sent by the control module based on the temperature.
2. The DC bus disconnector temperature monitoring device as described in claim 1, characterized in that, The prompting module includes a voice broadcast module and / or a light-emitting module.
3. The DC bus disconnector temperature monitoring device as described in claim 1, characterized in that, The sensing contact surface of the contact temperature sensor is attached to the finger or the contact head via a heat-conducting component.
4. The DC bus disconnector temperature monitoring device as described in claim 3, characterized in that, The thermally conductive component is thermally conductive adhesive.
5. The DC bus disconnector temperature monitoring device as described in claim 1, characterized in that, The control module includes a wireless communication module, a data gateway, and a controller; The contact temperature sensor, the wireless communication module, the data gateway, the controller, and the prompting module are connected in sequence.
6. The DC bus disconnector temperature monitoring device as described in claim 1, characterized in that, The contact temperature sensor is a ruthenium oxide temperature sensor, a capacitive temperature sensor, or a fluorescent fiber optic sensor.
7. The DC bus disconnector temperature monitoring device as described in any one of claims 1 to 6, characterized in that, The number of the fingers is N, where N is an integer greater than 1; The number of contact temperature sensors is N, and the sensing contact surface of the i-th contact temperature sensor is in contact with the i-th touch finger, where 1≤i≤N and i is an integer.
8. The DC bus disconnector temperature monitoring device according to any one of claims 1 to 6, characterized in that, The number of the fingers is N, where N is an integer greater than 1; The number of contact temperature sensors is M. The sensing contact surface of the j-th contact temperature sensor is attached to the contact point corresponding to the j-th contact finger. 1≤j≤M and j is an integer; M is not greater than N and M is a positive integer.
9. A voltage conversion system, characterized in that, It includes a rectifier transformer module and a DC bus disconnect switch, and also includes a DC bus disconnect switch temperature monitoring device as described in any one of claims 1 to 8; The AC power supply, the rectifier transformer module, and the DC bus disconnect switch are connected in sequence. The DC bus disconnect switch is also connected to the DC bus disconnect switch temperature monitoring device.
10. An electrolytic aluminum system, characterized in that, It includes an electrolytic cell and a voltage conversion system as described in claim 9, wherein the output terminal of the voltage conversion system is connected to the power supply input terminal of the electrolytic cell.