Electrolytic bath temperature detection control system

Abstract

The utility model discloses an electrolytic cell temperature detection control system, which comprises a temperature information acquisition unit, an information processing unit and a temperature regulation and control unit, the temperature information acquisition unit detects and acquires temperature signals of a cell of an electrolytic cell, the information processing unit processes the temperature signals acquired by the temperature information acquisition unit, and the temperature regulation and control unit controls the temperature of the cell of the electrolytic cell. And the temperature regulation and control unit regulates and controls the temperature of the electrolytic cell by regulating the temperature of a heat exchange medium in a heat exchange jacket outside the electrolytic cell.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen energy preparation, and particularly relates to a temperature detection and control system for an electrolytic cell. Background Art

[0002] Power generation methods such as wind power, photovoltaic power, and hydropower all have problems of long-term and seasonal power generation capacity fluctuations. Electrochemical energy storage means such as lithium batteries are difficult to achieve large-capacity and long-term power storage, and methods such as pumped-storage power stations are greatly restricted by geographical factors. As a clean and efficient energy source, hydrogen energy has gradually attracted people's attention. As an important energy carrier, the research and application of hydrogen production and storage technologies are also becoming increasingly widespread. Using electrolyzed water to produce green hydrogen can effectively consume renewable energy such as wind power, photovoltaic power, and hydropower. Among them, alkaline electrolyzed water hydrogen production is an important hydrogen production method and has been commercially applied.

[0003] In the technology of alkaline electrolyzed water hydrogen production, how to control the temperature stability of the electrolytic cell is a key issue. First of all, due to the volatility of renewable resources, the input of unstable power of volatile renewable energy, the operation of the electrolytic cell for hydrogen production using renewable resources will be intermittent, and thus there will be situations of intermittent start-up and shutdown of the alkaline electrolytic cell. The alkaline electrolytic cell is assembled from components such as end plates, gaskets, electrodes, electrode plates, and diaphragms. Due to the unique internal structure of the electrolytic cell, in the case of frequent intermittent start-up and shutdown of the electrolytic cell with alternating hot and cold, mechanical deformation of the electrolytic cell will occur, resulting in poor sealing, and even reducing the life of the electrolytic cell. In addition, the internal structure of the electrolytic cell is prone to situations such as too slow local flow rate of the alkali solution and blockage, which will cause a sudden increase in the local temperature of the electrolytic cell. On the other hand, most traditional domestic alkaline electrolytic cells currently use diaphragms such as asbestos and polyphenylene sulfide (PPS) for electrolysis. Among them, some diaphragms will cause a low current density due to bubble accumulation, resulting in a problem of high local temperature. Generally speaking, the coupling of volatile power sources such as wind power and photovoltaic power input, the internal structure of the electrolytic cell itself, and the electrolysis membrane are all likely to cause local heating of the electrolytic cell.

[0004] Therefore, how to keep the electrolytic cell in a stable working state is an urgent problem to be solved in this field. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a temperature detection and control system for an electrolytic cell, which can be applied to at least alkaline electrolytic cells to at least partially solve the above technical problems.

[0006] The utility model provides a temperature detection and control system for an electrolytic cell, including a temperature information acquisition unit, an information processing unit, and a temperature regulation unit;

[0007] The temperature information acquisition unit includes a temperature sensor located in the cell of the electrolytic cell for collecting temperature signals of the temperature of the cell of the electrolytic cell;

[0008] The information processing unit includes an information input module, a central processor, and an information output module. The information input module is used to input the temperature value collected by the temperature sensor into the central processor. The central processor compares the temperature value collected by the temperature sensor with a preset threshold and generates a first control signal according to the comparison result. The information output module outputs the first control signal to the temperature regulation unit;

[0009] The temperature regulation unit includes a temperature control system, a box for storing a heat exchange medium, a circulation pump, a heat exchange jacket, a heat exchange medium inlet pipeline, and a heat exchange medium outlet pipeline. Among them, the heat exchange medium inlet pipeline connects the outlet of the box and the inlet of the heat exchange jacket, and the heat exchange medium outlet pipeline connects the outlet of the heat exchange jacket and the inlet of the box. The heat exchange jacket is sleeved on the electrolytic cell, and the circulation pump is arranged on the heat exchange medium inlet pipeline or the heat exchange medium outlet pipeline. The temperature control system is used to adjust the temperature of the heat exchange medium in the box according to the received control signal.

[0010] Optionally, the system further includes a temperature detection device for detecting the temperature of the heat exchange medium in the box. The central processor receives the detection result of the temperature detection device, compares the temperature value detected by the temperature detection device with a temperature control preset value, generates a second control signal according to the comparison result, and the information output module outputs the second control signal to the temperature regulation unit.

[0011] On the one hand, the central processor compares the temperature value collected by the temperature sensor with a preset threshold and generates a first control signal according to the comparison result. On the other hand, it also receives the detection result of the temperature detection device, compares the temperature value detected by the temperature detection device with a temperature control preset value, generates a second control signal according to the comparison result. By precisely regulating the temperature of the heat exchange medium when the temperature control system works, the temperature of the electrolytic cell can be regulated more precisely and efficiently, thereby avoiding frequent temperature control and enabling the electrolytic cell to reach and maintain the optimal temperature range for operation faster.

[0012] Optionally, the system further includes a temperature detection device for detecting the temperature of the heat exchange medium in the box. After receiving the first control signal, the temperature control system receives the detection result of the temperature detection device and adjusts the temperature of the heat exchange medium in the box according to the comparison result of the temperature value detected by the temperature detection device and the temperature control preset value.

[0013] After the temperature control system receives the first control signal from the central processing unit, by comparing the temperature value detected by the temperature detection device with the preset value, the temperature control system can adjust the temperature of the heat exchange medium in the box according to the comparison result between the temperature value detected by the temperature detection device and the temperature control preset value. Through the precise regulation of the temperature of the heat exchange medium, the temperature control system can more accurately and efficiently regulate the temperature of the electrolytic cell, thereby avoiding frequent temperature control and enabling the electrolytic cell to reach and maintain the optimal temperature range for operation faster.

[0014] Optionally, the temperature regulation unit further includes a control panel, and a first switch is provided on the control panel for receiving user operation instructions, and the control panel adjusts the temperature of the heat exchange medium in the box according to the user operation instructions.

[0015] The control panel adjusts the temperature of the heat exchange medium in the box according to the user operation instructions. When it is judged that emergency adjustment of the electrolytic cell temperature or other abnormal working states are required, the first switch of the control panel can be manually operated to control the temperature detection control system to adjust the temperature of the electrolytic cell, so that the electrolytic cell maintains a relatively stable temperature, improving the safety and reliability of the system.

[0016] Optionally, a second switch is provided on the control panel for manually starting the temperature control system.

[0017] By setting this control panel, the manual start and control of the control system are realized. When the electrolytic cell is in an abnormal working state such as shutdown, the switch of the control panel can be manually operated to control the temperature detection control system to adjust the temperature of the electrolytic cell, so that the electrolytic cell maintains a relatively stable temperature, preventing the electrolytic cell from suffering mechanical deformation due to thermal cycling, and also enabling the electrolytic cell to enter the working state at any time, improving the reliability of the system.

[0018] Optionally, the temperature control system further includes a heating system and / or a cooling system; the heating system includes an electric heating device for increasing the temperature of the heat exchange medium in the box; the cooling system includes a refrigerant treatment system and a refrigerant circulation pipe, and at least part of the refrigerant circulation pipe is arranged in the box for reducing the temperature of the heat exchange medium through the refrigerant circulating in the pipe.

[0019] The temperature control system does not exclude the case of only including a heating system or a cooling system. Using an electric heating device to implement the heating system is only a preferred implementation manner, not the only one. Other implementation manners can also be adopted. For example, a heat circulation water or a heating film can be set to heat the heat exchange medium. Using a refrigerant circulation pipe and a refrigerant treatment system to implement the cooling system is also only a preferred implementation manner, not the only one. Other implementation manners can also be adopted. For example, ice cubes or liquid nitrogen can be set to cool the heat exchange medium. The heating system / cooling system can quickly and accurately adjust the temperature of the heat exchange medium in the box body by controlling the electric heating device / refrigerant treatment system, which can reduce the time required for temperature regulation, improve the efficiency and accuracy of temperature control, and make the temperature regulation of the electrolytic cell more timely and accurate. Preferably, the electric heating device and the refrigerant circulation pipe are in a coil structure.

[0020] Optionally, the refrigerant treatment system further includes a compressor, a condenser, and an expansion valve connected in sequence. The two ends of the refrigerant circulation pipe are respectively connected to the compressor and the expansion valve to realize the circulation of the refrigerant in the refrigerant treatment system and the refrigerant circulation pipe.

[0021] With the participation of the compressor, the condenser, and the expansion valve, the cooling system can more quickly and accurately regulate the temperature of the heat exchange medium during operation, and then accurately and efficiently regulate the temperature of the electrolytic cell, so that the electrolytic cell can reach the optimal temperature range for operation faster.

[0022] Optionally, there is an open gap on the side of the heat exchange jacket. The lower edge of one end of the heat exchange jacket is provided with a heat exchange medium inlet, which is connected to the heat exchange medium inlet pipeline. The upper edge of the other end of the heat exchange jacket is provided with a heat exchange medium outlet, which is connected to the heat exchange medium outlet pipeline.

[0023] By leaving an open gap, it is convenient to install, inspect, repair, and replace the temperature sensor.

[0024] Optionally, each small chamber of the electrolytic cell is provided with the temperature sensor.

[0025] Temperature sensors can be arranged in each small chamber of the electrolytic cell to collect real-time temperature signals of each small chamber, and transmit the collected temperature signals to the information processing unit through the signal transmission pipeline. The temperature feedback of the electrolytic cell is more comprehensive, and the temperature regulation requirements and potential safety hazards can be discovered in time, making the temperature regulation of the electrolytic cell more timely and accurate.

[0026] Optionally, the system further includes an information display unit for displaying the temperature information and alarm information of the small chamber of the electrolytic cell. The information output module is connected to the central processor and the information display unit through the signal transmission pipeline.

[0027] The information display unit can adopt methods such as a display screen, indicator lights, etc. The alarm method can be, for example, emitting sound and light signals, further enhancing the security and stability of the system.

[0028] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0029] In the present utility model, the temperature of the heat exchange medium is directly regulated by the temperature control system to control the temperature of the electrolytic cell. The time for regulating the temperature of the electrolytic cell is short and the efficiency is high, enabling the electrolytic cell to reach and maintain the optimal temperature range for operation more quickly, achieving timely and efficient control of the temperature of the electrolytic cell. At the same time, by regulating the temperature of the heat exchange medium through the temperature control system, the present utility model can use the same heat exchange medium to heat or cool the electrolytic cell. Compared with the prior art that requires two heat exchange media such as high-temperature steam and cooling water, the number of devices and pipelines is reduced, the usage amount of the heat exchange medium is reduced, the utilization rate of the heat exchange medium is improved, space is saved, and costs are reduced. The present utility model adjusts the temperature of the heat exchange medium according to different situations of the temperature of the electrolytic cell, automatically starts the cooling program when the electrolytic cell is overheated, quickly reduces the temperature of the heat exchange medium to rapidly reduce the temperature of the electrolytic cell, prevents the electrolytic cell from being overheated for a long time, and thus avoids the burning of the small chamber. The present utility model provides a perfect safety guarantee measure for the hydrogen production equipment, ensuring the long-term, stable and safe operation of the electrolytic cell. Description of the Drawings

[0030] The present utility model will be further described below with reference to the drawings and embodiments.

[0031] Figure 1 is an overall schematic diagram of the electrolytic cell temperature detection and control system according to an embodiment of the present utility model.

[0032] Figure 2 is Figure 1 a side view schematic diagram of the electrolytic cell and the heat exchange jacket in

[0033] 1: Electrolytic cell; 2: Temperature sensor; 3: Electrolytic cell compartment; 4: Box body; 5: Temperature control system; 6: Refrigerant treatment system; 7: Control panel; 8: Electric heating tube; 9: Circulation pump; 10: Heat exchange medium inlet pipeline; 11: Heat exchange medium outlet pipeline; 12: Heat exchange jacket; 13: Compressor; 14: Condenser; 15: Expansion valve; 16: Refrigerant circulation pipe; 17: Temperature detection device; 18: Opening gap of the heat exchange jacket; 19: Heat exchange medium inlet; 20: Heat exchange medium outlet; 21: Drain pipeline of the heat exchange jacket. Detailed Embodiments

[0034] To enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0035] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned accompanying drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so as to understand the embodiments of the present utility model described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a product or device comprising a series of units does not necessarily have to be limited to those units clearly listed, but may include other units not clearly listed or inherent to these products or devices.

[0036] In the present utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe the present utility model and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0037] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above-mentioned terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to specific circumstances.

[0038] In addition, the terms "mounted", "arranged", "provided with", "connected", "connected to", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present utility model can be understood according to specific circumstances.

[0039] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other. The following will describe the present utility model in detail with reference to the drawings and in conjunction with the embodiments.

[0040] Embodiment 1 of the present utility model provides an electrolytic cell temperature detection and control system. Referring to Figure 1 as shown, the system includes a temperature information acquisition unit, an information processing unit, and a temperature regulation unit.

[0041] Among them, the temperature information acquisition unit includes a temperature sensor 2, and the temperature sensor 2 is located in the cell 3 of the electrolytic cell 1 for collecting temperature signals of the temperature of the cell 3 of the electrolytic cell.

[0042] The information processing unit includes an information input module, a central processor, and an information output module. The information input module is used to input the temperature value collected by the temperature sensor 2 into the central processor. The central processor compares the temperature value collected by the temperature sensor 2 with a preset threshold value and generates a first control signal according to the comparison result. The information output module outputs the first control signal to the temperature regulation unit.

[0043] The temperature regulation unit includes a temperature control system 5, a box body 4 for storing a heat exchange medium, a circulation pump 9, a heat exchange jacket 12, a heat exchange medium inlet pipeline 10, and a heat exchange medium outlet pipeline 11. Among them, the heat exchange medium inlet pipeline 10 connects the outlet of the box body 4 and the inlet of the heat exchange jacket 12, and the heat exchange medium outlet pipeline 11 connects the outlet of the heat exchange jacket 12 and the inlet of the box body 4. The heat exchange jacket 12 is sleeved on the electrolytic cell 1, and the circulation pump 9 is arranged on the heat exchange medium inlet pipeline 10 or the heat exchange medium outlet pipeline 11. The temperature control system 5 is used to adjust the temperature of the heat exchange medium in the box body 4 according to the received control signal.

[0044] The temperature control system 5 includes a heating system and / or a refrigeration system; the heating system includes an electric heating device for increasing the temperature of the heat exchange medium in the box body 4; the refrigeration system includes a refrigerant treatment system 6 and a refrigerant circulation pipe 16. The refrigerant circulation pipe 16 is at least partially arranged in the box body 4 for reducing the temperature of the heat exchange medium by the refrigerant circulating in the pipe.

[0045] The central processing unit compares the temperature value collected by the temperature sensor 2 with a preset threshold value, and generates a control signal according to the comparison result, including: if the collected temperature value exceeds the preset maximum threshold value, a first control signal for cooling is generated; if the collected temperature value is lower than the preset minimum threshold value, a first control signal for heating is generated; if the collected temperature value is between the minimum threshold value and the maximum threshold value, no first control signal is generated. In another embodiment, the central processing unit compares the temperature value collected by the temperature sensor 2 with a preset threshold value, and generating a first control signal according to the comparison result further includes: if the collected temperature value is between the minimum threshold value and the maximum threshold value, and the last generated signal is the first cooling control signal or the first heating control signal, a first control signal for stopping temperature adjustment is generated.

[0046] As Figure 1 shown, the electric heating device may be an electric heating tube 8, and the electric heating tube 8 is arranged in the box body 4 and is used to heat the heat exchange medium in the box body 4. The electric heating tube 8 may be in physical contact with or close to the heat exchange medium. The electric heating tube 8 may be a coil structure to increase the heating range of the heat exchange medium. In one embodiment, the electric heating tube 8 is arranged at the bottom of the box body 4 to ensure that the electric heating tube 8 can be in contact with the heat exchange medium in the box body 4, and the temperature control system 5 controls the electric heating tube 8 to increase the temperature of the heat exchange medium in the box body 4. It should be noted that the heating system may also adopt other embodiments. For example, hot circulating water or heating films and other optional methods may be set. The electric heating device is only a preferred embodiment, not the only one. Moreover, the electric heating tube 8 is only a preferred embodiment of the electric heating device, not the only one. The electric heating device may also adopt various optional methods such as electric heating cylinders and electric heating plates.

[0047] As Figure 1As shown, the refrigerant treatment system 6 includes a compressor 13, a condenser 14, and an expansion valve 15 connected in sequence. Both ends of the refrigerant circulation pipe 16 are connected to the compressor 13 and the expansion valve 15 respectively, realizing the circulation of the refrigerant in the refrigerant treatment system 6 and the refrigerant circulation pipe 16. In one embodiment, the liquid refrigerant flows through the refrigerant circulation coil 16 to absorb the heat of the heat exchange medium in the box body 4, reducing the temperature of the heat exchange medium. During this process, the refrigerant absorbs heat and evaporates into a gas. After being completely evaporated into a gas, the gaseous refrigerant is compressed by the compressor 13. At this time, both the pressure and the temperature increase. Then, the refrigerant is condensed into a liquid by the condenser 14. Next, the refrigerant throttles through the expansion valve 15, making the refrigerant become a low-temperature and low-pressure refrigerant and enter the refrigerant circulation coil 16 to complete the refrigeration of the heat exchange medium, starting a new round of cycle. Preferably, the refrigerant circulation pipe 16 is arranged at the bottom of the box body 4 to ensure that the refrigerant circulation pipe 16 can contact the heat exchange medium in the box body 4. The refrigerant circulation pipe 16 can be a coil structure to increase the refrigeration range of the heat exchange medium. The refrigerant treatment system 6 is used for circulating and refrigerating the refrigerant, and the temperature control system 5 controls the refrigerant treatment system 6 to reduce the temperature of the heat exchange medium in the box body 4. It should be noted that other embodiments can also be adopted for the refrigeration system. For example, ice cubes or liquid nitrogen can be set to cool the heat exchange medium. The refrigeration system realized by the above refrigerant treatment system 6 and the refrigerant circulation pipe 16 is only a preferred embodiment, not the only way.

[0048] Figure 2 Shown Figure 1 The side view schematic diagram of the electrolytic cell 1 and the heat exchange jacket 12 in it. In one embodiment, there is an open gap 18 on the side of the heat exchange jacket 12. The lower edge of one end of the heat exchange jacket 12 is provided with a heat exchange medium inlet 19, which is connected to the heat exchange medium inlet pipeline 10. The upper edge of the other end of the heat exchange jacket 12 is provided with a heat exchange medium outlet 20, which is connected to the heat exchange medium outlet pipeline 11. This open gap 18 is used to accommodate the connection line of the temperature sensor 2, facilitating the installation, inspection, maintenance, and replacement of the temperature sensor. The length of the open gap 18 is preferably the same as the length of the electrolytic cell compartment 3. In one embodiment, the heat exchange jacket 12 is an annular sleeve, and the shape of the cross-section of the heat exchange jacket 12 is determined according to the shape and working state of the electrolytic cell, such as Figure 2 As shown, when the electrolytic cell 1 is cylindrical, the heat exchange jacket 12 can be a circular annular sleeve, and a closed annular space for accommodating the heat exchange medium is formed inside the heat exchange jacket 12. Preferably, the inner wall of the heat exchange jacket 12 is closely attached to the outer side of the electrolytic cell 1 to prevent a large amount of air from reducing the heat exchange efficiency. As Figure 2 Shown, the heat exchange jacket 12 can also be provided with a drain pipeline 21 for quickly draining the heat exchange medium in the heat exchange jacket.

[0049] In one embodiment, each cell 3 of the electrolytic cell 1 is provided with a temperature sensor 2. At this time, the temperature sensor 2 is used to collect real-time temperature signals of the temperature of each cell 3, and transmit the temperature signals to the information processing unit through a signal transmission pipeline. Preferably, the temperature sensor 2 can be located at the center of the electrolytic cell chamber 3 corresponding to the opening gap 18 of the heat exchange jacket 12, and the temperature sensor 2 is fixedly arranged in each cell 3 with a fixing member. The temperature sensor collects the temperature of each cell in real time, and the temperature feedback of the electrolytic cell is more comprehensive, which can timely detect the temperature regulation requirements and potential safety hazards, eliminate the safety blind spots, and make the temperature regulation of the electrolytic cell more timely and accurate. The temperature sensor 2 can be a resin patch insulated temperature sensor or other types of temperature sensors.

[0050] In this embodiment, the central processor can compare the temperature value of each electrolytic cell chamber 3 with a preset threshold, or compare the temperature values of some electrolytic cell chambers 3 with a preset threshold. When comparing multiple temperature values with a preset threshold, each of the multiple temperature values can be compared with the preset threshold, or a reference temperature value obtained by processing the multiple temperature values by averaging or root mean square, etc. can be compared with the preset threshold.

[0051] In this embodiment, when the central processor compares multiple temperature values with a preset threshold, a first control signal is generated when any one of the comparison results meets the preset condition; or a first control signal is generated only when the comparison results meeting the preset condition reach a preset ratio, or the comparison result of the temperature value of a specific electrolytic cell chamber 3 meets the preset condition, so as to avoid frequent temperature control. For example, when the temperature value of any electrolytic cell chamber 3 exceeds the preset maximum threshold, a first control signal for starting the temperature reduction of the temperature control system 5 is sent to the temperature regulation unit, and when the temperature values of most or all electrolytic cell chambers 3 are lower than the preset minimum threshold, a first control signal for starting the temperature increase of the temperature control system 5 is sent to the temperature regulation unit. In extreme cases, if multiple comparison results of the central processor simultaneously meet the cooling preset condition and the heating preset condition, to ensure the safety of the operation of the electrolytic cell, the cooling preset condition can be preferentially applied to generate a cooling first control signal.

[0052] In one embodiment, the temperature regulation unit further includes a control panel 7, and a first switch is provided on the control panel 7 for receiving user operation instructions, and the control panel 7 adjusts the temperature of the heat exchange medium in the box body 4 according to the user operation instructions. Figure 1As shown, a control panel 7 can be provided to receive operation instructions from the user for adjusting the temperature of the heat exchange medium in the box body 4, or two control panels 7 can be provided respectively to receive operation instructions from the user for increasing and decreasing the temperature of the heat exchange medium in the box body 4. By setting up this control panel, manual control of the control system can be achieved. When it is judged that emergency adjustment of the electrolytic cell temperature or other abnormal working states are needed, the first switch of the control panel can be manually operated to control the temperature detection control system to adjust the temperature of the electrolytic cell, so that the electrolytic cell maintains a relatively stable temperature, improving the safety and reliability of the system. Further, a second switch can also be provided on the control panel 7 for manually starting the temperature control system 5. By setting up this control panel, manual start and control of the temperature control system 5 can be achieved. When the electrolytic cell is in an abnormal working state such as shutdown, the second switch of the control panel can be manually operated to control the temperature detection control system to adjust the temperature of the electrolytic cell, so that the electrolytic cell maintains a relatively stable temperature, preventing mechanical deformation of the electrolytic cell caused by alternating heat and cold, and also enabling the electrolytic cell to enter the working state at any time, improving the reliability of the system.

[0053] Among them, the heat exchange medium includes, but is not limited to, substances capable of heat exchange such as deionized water and heat transfer oil.

[0054] Among them, the system provided in this embodiment can also include an information display unit, such as a display screen, which is connected to the temperature information acquisition unit and the information processing unit and is used to display the temperature information and alarm information of the electrolytic cell compartment 3. For example, an alarm threshold can be set, and when the temperature is too high or too low, the information display unit issues an alarm, and the alarm method can be, for example, emitting a sound and light signal.

[0055] The working principle of the present utility model is as follows: The temperature sensor 2 of the temperature information acquisition unit collects the temperature of the electrolytic cell compartment 3 in real time. The information input module inputs the temperature value collected by the temperature sensor 2 into the central processing unit. The central processing unit compares the temperature value collected by the temperature sensor 2 with a preset threshold, generates a first control signal according to the comparison result, and the information output module outputs the first control signal to the temperature regulation unit, including that if the collected temperature value is between the minimum threshold and the maximum threshold, no first control signal is generated; if the collected temperature value is lower than the preset minimum threshold, a first control signal for heating up is generated, and the temperature regulation unit starts the temperature control system 5 to increase the temperature of the heat exchange medium in the box body 4. The circulation pump 9 transports the heat exchange medium from the box body 4 to the heat exchange jacket 12 and circulates it, so that the heat exchange jacket 12 outside the electrolytic cell 1 is filled with and circulates the heat exchange medium, accelerating the heating up of the electrolytic cell 1. When the collected temperature value is between the minimum threshold and the maximum threshold, a first control signal for stopping temperature adjustment is generated, and the operation of the temperature control system 5 is stopped; if the collected temperature value exceeds the preset maximum threshold, a first control signal for cooling down is generated, and the temperature regulation unit starts the temperature control system 5 to reduce the temperature of the heat exchange medium in the box body 4. The circulation pump 9 transports the heat exchange medium from the box body 4 to the heat exchange jacket 12 and circulates it, so that the heat exchange jacket 12 outside the electrolytic cell 1 is filled with and circulates the heat exchange medium, accelerating the cooling down of the electrolytic cell 1. When the collected temperature value is between the minimum threshold and the maximum threshold, a first control signal for stopping temperature adjustment is generated, and the operation of the temperature control system 5 is stopped.

[0056] In the present utility model, the temperature of the electrolytic cell is controlled by directly regulating the temperature of the heat exchange medium through the temperature control system 5. The time for regulating the temperature of the electrolytic cell is short and the efficiency is high, enabling the electrolytic cell to reach and maintain at the optimal temperature range for operation faster, realizing timely and efficient control of the temperature of the electrolytic cell.

[0057] In the present utility model, by regulating the temperature of the heat exchange medium, the same heat exchange medium can be used to heat or cool the electrolytic cell. Compared with the prior art that commonly uses two heat exchange media such as high-temperature steam and cooling water, the number of devices and pipelines is reduced, the usage amount of the heat exchange medium is decreased, the utilization rate of the heat exchange medium is improved, space is saved, and the cost is reduced.

[0058] Embodiment 2 of the present utility model provides a temperature detection and control system for an electrolytic cell. Refer to Figure 1 As shown, the system includes a temperature information acquisition unit, an information processing unit, and a temperature regulation unit.

[0059] Among them, the temperature information acquisition unit includes a temperature sensor 2. The temperature sensor 2 is located inside the compartment 3 of the electrolytic cell 1 and is used to collect temperature signals of the electrolytic cell compartment 3.

[0060] The information processing unit includes an information input module, a central processing unit, and an information output module. The information input module is used to input the temperature value collected by the temperature sensor 2 into the central processing unit. The central processing unit compares the temperature value collected by the temperature sensor 2 with a preset threshold, generates a first control signal according to the comparison result, and the information output module outputs the first control signal to the temperature control unit.

[0061] The temperature control unit includes a temperature control system 5, a box body 4 for storing a heat exchange medium, a circulation pump 9, a heat exchange jacket 12, a heat exchange medium inlet pipeline 10, and a heat exchange medium outlet pipeline 11. Among them, the heat exchange medium inlet pipeline 10 connects the outlet of the box body 4 and the inlet of the heat exchange jacket 12, the heat exchange medium outlet pipeline 11 connects the outlet of the heat exchange jacket 12 and the inlet of the box body 4, the heat exchange jacket 12 is sleeved on the electrolytic cell 1, the circulation pump 9 is arranged on the heat exchange medium inlet pipeline 10 or the heat exchange medium outlet pipeline 11, and the temperature control system 5 is used to adjust the temperature of the heat exchange medium in the box body 4 according to the first control signal.

[0062] The temperature control system 5 includes a heating system and / or a cooling system; the heating system includes an electric heating device for increasing the temperature of the heat exchange medium in the box body 4; the cooling system includes a refrigerant treatment system 6 and a refrigerant circulation pipe 16, and at least part of the refrigerant circulation pipe 16 is arranged in the box body 4 for reducing the temperature of the heat exchange medium through the refrigerant circulating in the pipe.

[0063] The system further includes a temperature detection device 17 for detecting the temperature of the heat exchange medium in the box body 4.

[0064] The difference between this embodiment and the first embodiment is that:

[0065] The central processing unit compares the temperature value collected by the temperature sensor 2 with a preset threshold, and generating a control signal according to the comparison result may include: receiving the detection result of the temperature detection device 17, comparing the temperature value detected by the temperature detection device 17 with a temperature control preset value, and generating a second control signal according to the comparison result.

[0066] The central processing unit compares the temperature value detected by the temperature detection device 17 with the temperature control preset value, and generates a second control signal according to the comparison result, including: if the previously generated first control signal is for temperature increase, when the temperature value detected by the temperature detection device 17 is less than the temperature control preset value for temperature increase, a second control signal for increasing the temperature of the heat exchange medium in the box body 4 is generated; when the detected temperature value is equal to or greater than the temperature control preset value for temperature increase, no second control signal is generated. In another embodiment, the central processing unit compares the temperature value detected by the temperature detection device 17 with the temperature control preset value, and the generation of the second control signal according to the comparison result further includes: if the detected temperature value is equal to or greater than the temperature control preset value for temperature increase, and the previously generated first control signal is for temperature increase, a second control signal for stopping the adjustment of the temperature of the heat exchange medium in the box body 4 is generated. If the previously generated first control signal is for temperature decrease, when the temperature value detected by the temperature detection device 17 is greater than the temperature control preset value for temperature decrease, a second control signal for decreasing the temperature of the heat exchange medium in the box body 4 is generated; when the detected temperature value is equal to or less than the temperature control preset value for temperature decrease, no second control signal is generated. In another embodiment, the central processing unit compares the temperature value detected by the temperature detection device 17 with the temperature control preset value, and the generation of the second control signal according to the comparison result further includes: if the detected temperature value is equal to or less than the temperature control preset value for temperature decrease, and the previously generated first control signal is for temperature decrease, a second control signal for stopping the adjustment of the temperature of the heat exchange medium in the box body 4 is generated.

[0067] The settings of the heating system, the cooling system, the electrolytic cell and the heat exchange jacket are the same as those in the first embodiment, and will not be described in detail here.

[0068] In the present utility model, on the one hand, the central processing unit compares the temperature value collected by the temperature sensor 2 with the preset threshold, and generates a first control signal according to the comparison result; on the other hand, it also receives the detection result of the temperature detection device 17, compares the temperature value detected by the temperature detection device 17 with the temperature control preset value, and generates a second control signal according to the comparison result. By accurately regulating the temperature of the heat exchange medium when the temperature control system 5 is working, the temperature of the electrolytic cell can be regulated more precisely and efficiently, thereby avoiding frequent temperature control and enabling the electrolytic cell to reach and maintain the optimal temperature range for operation faster.

[0069] Embodiment 3 of the present utility model provides an electrolytic cell temperature detection and control system. Refer to Figure 1 As shown, the system includes a temperature information collection unit, an information processing unit and a temperature regulation unit.

[0070] Among them, the temperature information collection unit includes a temperature sensor 2. The temperature sensor 2 is located in the compartment 3 of the electrolytic cell 1 and is used to collect temperature signals for the temperature of the compartment 3 of the electrolytic cell.

[0071] The information processing unit includes an information input module, a central processing unit, and an information output module. The information input module is used to input the temperature value collected by the temperature sensor 2 into the central processing unit. The central processing unit compares the temperature value collected by the temperature sensor 2 with a preset threshold and generates a first control signal according to the comparison result. The information output module outputs the first control signal to the temperature control unit.

[0072] The temperature control unit includes a temperature control system 5, a box body 4 for storing a heat exchange medium, a circulation pump 9, a heat exchange jacket 12, a heat exchange medium inlet pipeline 10, and a heat exchange medium outlet pipeline 11. Among them, the heat exchange medium inlet pipeline 10 connects the outlet of the box body 4 and the inlet of the heat exchange jacket 12, and the heat exchange medium outlet pipeline 11 connects the outlet of the heat exchange jacket 12 and the inlet of the box body 4. The heat exchange jacket 12 is sleeved on the electrolytic cell 1. The circulation pump 9 is arranged on the heat exchange medium inlet pipeline 10 or the heat exchange medium outlet pipeline 11. The temperature control system 5 is used to adjust the temperature of the heat exchange medium in the box body 4 according to the first control signal.

[0073] The temperature control system 5 includes a heating system and / or a refrigeration system; the heating system includes an electric heating device for increasing the temperature of the heat exchange medium in the box body 4; the refrigeration system includes a refrigerant treatment system 6 and a refrigerant circulation pipe 16. The refrigerant circulation pipe 16 is at least partially arranged in the box body 4 and is used to reduce the temperature of the heat exchange medium through the refrigerant circulating in the pipe.

[0074] The system further includes a temperature detection device 17 for detecting the temperature of the heat exchange medium in the box body 4.

[0075] The difference between this embodiment and the second embodiment is that the central processing unit compares the temperature value collected by the temperature sensor 2 with a preset threshold and generates a first control signal according to the comparison result, without considering the detection result of the temperature detection device 17. However, the temperature control system 5 receives the detection result of the temperature detection device 17 and adjusts the temperature of the heat exchange medium in the box body 4 according to the comparison result between the temperature value detected by the temperature detection device 17 and the temperature control preset value. That is to say, the temperature control system 5 receives the first control signal from the central processing unit and further adjusts the temperature of the heat exchange medium according to the comparison result between the temperature value of the heat exchange medium detected by the temperature detection device 17 and the temperature control preset value.

[0076] The temperature control system 5 compares the temperature value detected by the temperature detection device 17 with the temperature control preset value, and adjusts the temperature of the heat exchange medium according to the comparison result, including: if the last received signal is the first heating control signal, when the temperature value detected by the temperature detection device 17 is less than the temperature control preset value for heating, the temperature of the heat exchange medium in the box body 4 is increased; when the detected temperature value is equal to or greater than the temperature control preset value for heating, the adjustment of the temperature of the heat exchange medium in the box body 4 is stopped; if the last received signal is the first cooling control signal, when the temperature value detected by the temperature detection device 17 is greater than the temperature control preset value for cooling, the temperature of the heat exchange medium in the box body 4 is decreased; when the detected temperature value is equal to or less than the temperature control preset value for cooling, the adjustment of the temperature of the heat exchange medium in the box body 4 is stopped.

[0077] The settings of the heating system, the cooling system, the electrolytic cell and the heat exchange jacket are the same as those in the first embodiment, and will not be described in detail here.

[0078] In one embodiment, the temperature control unit further includes a control panel 7. A first switch is provided on the control panel 7 for receiving user operation instructions. The control panel 7 adjusts the temperature of the heat exchange medium in the box body 4 according to the user operation instructions, including setting the temperature control preset value of the heat exchange medium according to the user operation instructions. By providing this control panel, the manual control of the control system is realized. When it is judged that it is necessary to urgently adjust the temperature of the electrolytic cell in an abnormal working state, etc., the first switch of the control panel can be manually operated to control the temperature detection control system to adjust the temperature of the electrolytic cell and reset the temperature control preset value of the heat exchange medium, enhancing the safety and reliability of the system. Further, a second switch can also be provided on the control panel 7 for manually starting the temperature control system 5. By providing this control panel, the manual control of the control system is realized. When the electrolytic cell is in an abnormal working state such as shutdown, the second switch of the control panel can be manually operated to control the temperature detection control system to adjust the temperature of the electrolytic cell, and the first switch of the control panel can also be manually operated to set the temperature control preset value of the heat exchange medium, so that the electrolytic cell maintains a relatively stable temperature, preventing mechanical deformation of the electrolytic cell caused by heat and cold alternation, and enabling it to enter the working state at any time, improving the reliability of the system.

[0079] In one embodiment, the control panel 7 can also implement the function of comparing the temperature value detected by the temperature detection device 17 with the temperature control preset value and adjusting the temperature of the heat exchange medium according to the comparison result. That is to say, the control panel 7 receives the first control signal from the central processing unit and the detection result of the temperature detection device 17, and further adjusts the temperature of the heat exchange medium in the box body 4 according to the comparison result between the temperature value of the heat exchange medium detected by the temperature detection device 17 and the temperature control preset value.

[0080] In the present utility model, the central processing unit only compares the temperature value collected by the temperature sensor 2 with a preset threshold value, and generates a first control signal according to the comparison result; the temperature control system 5 receives the first control signal from the central processing unit, and further adjusts the temperature of the heat exchange medium according to the comparison result between the temperature value of the heat exchange medium detected by the temperature detection device 17 and the temperature control preset value. By precisely controlling the temperature of the heat exchange medium when the temperature control system 5 is working, the temperature of the electrolytic cell can be controlled more precisely and efficiently, thereby avoiding frequent temperature control and enabling the electrolytic cell to reach and maintain the optimal temperature range for operation faster.

[0081] Embodiment 4 of the present utility model provides a temperature detection and control system for an electrolytic cell, which is different from Embodiment 2 in that: on the one hand, the central processing unit can compare the temperature value collected by the temperature sensor with a preset threshold value and generate a control signal according to the comparison result; on the other hand, it can receive the detection result of the temperature detection device 17, compare the temperature value detected by the temperature detection device 17 with the heating preset value, and generate the control signal according to the comparison result. The central processing unit has two mechanisms for generating control signals, and temperature control can still be achieved through the other mechanism in the case of a failure of one detection mechanism, enhancing the reliability of the system.

[0082] The accompanying drawings and the above description depict non-limiting preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An electrolytic cell temperature detection and control system, characterized in that: It includes a temperature information acquisition unit, an information processing unit and a temperature control unit; The temperature information acquisition unit comprises a temperature sensor (2), wherein the temperature sensor (2) is located in a small chamber (3) of the electrolytic cell (1) and is used to acquire a temperature signal of the temperature of the small chamber (3) of the electrolytic cell; The information processing unit comprises an information input module, a central processing unit and an information output module, wherein the information input module is used to input the temperature value collected by the temperature sensor (2) into the central processing unit, the central processing unit compares the temperature value collected by the temperature sensor (2) with a preset threshold value, generates a first control signal according to the comparison result, and the information output module outputs the first control signal to the temperature control unit; The temperature control unit comprises a temperature control system (5), a box (4) for storing a heat exchange medium, a circulation pump (9), a heat exchange jacket (12), a heat exchange medium inlet pipeline (10) and a heat exchange medium outlet pipeline (11), wherein the heat exchange medium inlet pipeline (10) is connected to the outlet of the box (4) and the inlet of the heat exchange jacket (12), the heat exchange medium outlet pipeline (11) is connected to the outlet of the heat exchange jacket (12) and the inlet of the box (4), the heat exchange jacket (12) is sleeved on the electrolytic cell (1), the circulation pump (9) is arranged on the heat exchange medium inlet pipeline (10) or the heat exchange medium outlet pipeline (11), and the temperature control system (5) is used to adjust the temperature of the heat exchange medium in the box (4) according to the received control signal.

2. The electrolytic cell temperature detection and control system according to claim 1, characterized in that: It also includes a temperature detection device (17) for detecting the temperature of the heat exchange medium in the box (4); The central processor receives the detection result of the temperature detection device (17), compares the temperature value detected by the temperature detection device (17) with the temperature control preset value, generates a second control signal according to the comparison result, and the information output module outputs the second control signal to the temperature control unit.

3. The electrolytic cell temperature detection and control system according to claim 1, characterized in that: It also includes a temperature detection device (17) for detecting the temperature of the heat exchange medium in the box (4); After receiving the first control signal, the temperature control system (5) receives the detection result of the temperature detection device (17), and adjusts the temperature of the heat exchange medium in the box (4) according to the comparison result between the temperature value detected by the temperature detection device (17) and the temperature control preset value.

4. The electrolytic cell temperature detection and control system according to claim 1, characterized in that: The temperature control unit further comprises a control panel (7), on which a first switch is provided for receiving user operation instructions, and the control panel (7) adjusts the temperature of the heat exchange medium in the box (4) according to the user operation instructions.

5. The electrolytic cell temperature detection and control system according to claim 4, characterized in that: The control panel (7) is provided with a second switch for manually starting the temperature control system (5).

6. The electrolytic cell temperature detection and control system according to any one of claims 1 to 5, characterized in that: The temperature control system (5) includes a heating system and / or a cooling system. The heating system comprises an electric heating device for increasing the temperature of the heat exchange medium in the box (4); The refrigeration system comprises a refrigerant processing system (6) and a refrigerant circulation pipe (16). The refrigerant circulation pipe (16) is at least partially arranged in the box (4) and is used to reduce the temperature of the heat exchange medium through the refrigerant circulating in the pipe.

7. The electrolytic cell temperature detection and control system according to claim 6, characterized in that: The refrigerant treatment system (6) comprises a compressor (13), a condenser (14) and an expansion valve (15) which are connected in sequence, and the two ends of the refrigerant circulation pipe (16) are respectively connected to the compressor (13) and the expansion valve (15), so as to realize the circulation of the refrigerant in the refrigerant treatment system (6) and the refrigerant circulation pipe (16).

8. The electrolytic cell temperature detection and control system according to any one of claims 1 to 5, characterized in that: The side of the heat exchange jacket (12) has an open gap (18); the lower edge of one end of the heat exchange jacket (12) is provided with a heat exchange medium inlet (19) connected to the heat exchange medium inlet pipeline (10); the upper edge of the other end of the heat exchange jacket (12) is provided with a heat exchange medium outlet (20) connected to the heat exchange medium outlet pipeline (11).

9. The electrolytic cell temperature detection and control system according to any one of claims 1 to 5, characterized in that: Each of the small chambers (3) of the electrolytic cell (1) is provided with the temperature sensor (2).

10. The electrolytic cell temperature detection and control system according to any one of claims 1 to 5, characterized in that: It also includes an information display unit for displaying the temperature information and alarm information of the electrolytic cell chamber (3); the information output module is connected to the central processor and the information display unit via a signal transmission pipeline.

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