Accurate regulation and control device for negative electrode distance of electrode

Abstract

The utility model relates to a precise regulation and control device for the negative electrode distance of an electrode, which comprises a precise mechanical arm, a high-precision sensor and a control system, the precise mechanical arm and the high-precision sensor are both arranged in an electrolytic bath, and circuits of the precise mechanical arm and the high-precision sensor are connected to the control system. Power supply access and signal transmission inspection are carried out, the control system integrates data of each sensor into the control system, and real-time communication is realized through a data bus; according to the scheme, the electrolysis efficiency is improved, the energy consumption is reduced, the flow uniformity of the electrolyte is optimized, and the durability and safety of equipment are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of regulation and control device, specifically to a kind of electrode negative pole distance accurate regulation and control device, belong to alkaline electrolytic cell control structure component technical field. BACKGROUND

[0002] Currently, as one of the main equipment of electrolytic water hydrogen production, the performance optimization of alkaline electrolytic cell is of great significance to improve hydrogen production efficiency and reduce energy consumption. However, there are many limitations in the design and control of negative pole distance in the prior art, such as immature design technology, insufficient distance regulation accuracy, etc. These problems directly affect the electrochemical performance of electrolytic cell, electrolyte distribution uniformity and equipment life. Therefore, developing a technology that can accurately regulate the electrode negative pole distance is of great significance to improve the overall performance of electrolytic cell. SUMMARY

[0003] The utility model is just for the problem of inaccurate regulation and control of negative pole distance of alkaline electrolytic cell in the prior art, providing a kind of electrode negative pole distance accurate regulation and control device, which is designed ingeniously and compactly. The micron-level regulation and control of negative pole distance is realized by precise mechanical device, thereby improving electrolysis efficiency, reducing energy consumption, optimizing electrolyte flow uniformity, and enhancing equipment durability and safety.

[0004] To achieve the above purpose, the technical scheme of the utility model is as follows: a kind of electrode negative pole distance accurate regulation and control device, characterized by the regulation and control device comprising a precision mechanical arm, a high-precision sensor, a control system,

[0005] The precision mechanical arm and the high-precision sensor are installed inside the electrolytic cell. The lines of the precision mechanical arm and the high-precision sensor are connected to the control system, and power supply access and signal transmission check are performed. The control system integrates the data of each sensor into the control system, and realizes real-time communication through the data bus.

[0006] As an improvement of the utility model, the high-precision sensor includes a temperature sensor, a current sensor and a displacement sensor. Multiple temperature sensors are arranged along the surface of the electrode plate to monitor the temperature distribution in the electrolytic cell in real time to detect the change of thermal stress. High-precision displacement sensors are installed at key positions of the electrode plate to monitor the deformation of the electrode plate in real time.

[0007] As an improvement of the utility model, the precision mechanical arm includes a linear guide rail and a precision screw assembly, an electric manipulator and a stepping motor. The electric manipulator or stepping motor is integrated in the electrolytic cell structure. The fine adjustment of the electrode plate is realized by displacement control. The linear guide rail and the screw assembly use high-precision guide rail and screw assembly to ensure that the adjustment mechanism can stably and accurately adjust the small displacement.

[0008] As an improvement of the utility model, the control system comprises a PLC (programmable logic controller) / DCS (distributed control system), which is responsible for comprehensive processing of sensor data and algorithmic control of the execution of the adjusting mechanism;

[0009] Closed-loop control system: real-time adjustment of the position of the electrode plate is realized by using a feedback control loop to ensure that the negative electrode distance is always within the set range.

[0010] Compared with the prior art, the utility model has the following advantages: 1. A precision mechanical arm is used as the regulating device, and the negative electrode distance is accurately adjusted by a high-precision sensor and a control system, with an error controlled within 0.1 mm; 2. The device can automatically adjust the negative electrode distance to the optimal state according to the actual operating conditions of the electrolytic cell, such as current intensity, electrolyte concentration and other parameters. Through accurate regulation of the negative electrode distance, the distribution of the electrolyte in the electrolytic cell is improved, the generation of bubbles is reduced, and the gas separation efficiency is improved; 3. Simulation results show that the number of bubbles is reduced by 30% after the technology is used, and the gas separation efficiency is improved to more than 98%. The negative electrode distance is automatically adjusted to cope with the problem of deformation of the electrode plate caused by thermal stress changes during the electrolysis process, thereby prolonging the service life of the electrolytic cell to more than 15 years and improving the safety redundancy of the equipment by 20%; 4. By accurately regulating the negative electrode distance, the distribution of the electrolyte is optimized, and the current density is improved. Actual measurements show that the electrolysis efficiency is improved by more than 15%. Energy consumption is reduced: after optimizing the negative electrode distance, the energy consumption of the electrolysis process is reduced by 8%-10%, and the energy-saving effect is significant. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 The figure is a schematic diagram of the assembly of the alkaline electrolytic cell,

[0012] Figure 2 The figure is a schematic diagram of the assembly of the alkaline electrolytic cell, Figure 1 The figure is a schematic diagram of the assembly of the alkaline electrolytic cell,

[0013] Figure 3 The figure is a schematic diagram of the assembly of the alkaline electrolytic cell,

[0014] Figure 4 The figure is a schematic diagram of the assembly of the alkaline electrolytic cell,

[0015] Figure 5 The figure is a schematic diagram of the assembly of the alkaline electrolytic cell.

[0016] In the figure: 1 is a four-fluorine gasket, 2 is an electrode frame, 3 is an anode electrode net, 4 is a diaphragm, 5 is a cathode electrode net, 6 is an electrode plate, 7 is an elastic support net, 8 is a precision mechanical arm, 9 is a high-precision sensor, 10 is a control system, 11 is a truss mechanical hand, 12 is a two-stage hydraulic stretcher, 13 is a 1000-square alkaline electrolytic cell, 14 is a two-stage hydraulic station, 15 is an electrolytic cell, 16 is a measuring mechanical hand, and 17 is a support frame. DETAILED DESCRIPTION

[0017] In order to deepen the understanding of the utility model, the following detailed description of the embodiment is made in conjunction with the drawings.

[0018] Embodiment 1: see Figure 1 、 Figure 2 First, a negative distance control device containing a precision mechanical arm 8, a high-precision sensor 9 and a control system 10 is designed and manufactured. The device is installed inside the electrolytic cell 15 (see Figure 3 ), the sensor is inserted into the internal cavity of the cell body through the pre-made hole, and then fastened, which can monitor the operating parameters of the electrolytic cell in real time, such as current intensity, electrolyte concentration, etc. Then, according to the actual operating conditions of the electrolytic cell, the control system 10 sends instructions to the precision mechanical arm 8 to adjust the negative distance to the optimal state. During the adjustment process, the high-precision sensor feedbacks the change of the negative distance in real time, ensuring that the control accuracy is within 0.1mm.

[0019] Finally, the actual effect of the utility model is verified through long-term operation test. The measured data shows that after adopting the technology, the electrolysis efficiency is significantly improved, the energy consumption is obviously reduced, and the durability and safety of the equipment are also enhanced.

[0020] Implementation principle and process details:

[0021] System components

[0022] Precision mechanical arm: used for accurate adjustment of negative distance. The mechanical arm can move along multiple axes to ensure high-precision adjustment in all directions.

[0023] High-precision sensor: including temperature sensor, displacement sensor and current sensor, real-time monitoring of electrolytic cell operating parameters to ensure feedback accuracy.

[0024] Control system: composed of PLC (Programmable Logic Controller) or DCS (Distributed Control System), responsible for comprehensive data processing and adjustment.

[0025] Design and manufacturing structure design: according to the actual size and layout of the electrolytic cell, the installation position and movement range of the precision mechanical arm are designed to ensure that it can cover the entire electrolytic cell.

[0026] Sensor installation: reserve sensor holes at appropriate positions of the electrolytic cell, install temperature sensor, current sensor and displacement sensor.

[0027] Control system integration: integrate data from various sensors into the control system, and realize real-time communication through data bus.

[0028] Device installation and debugging

[0029] Installation steps

[0030] Mechanical arm installation: As shown in Figure 3 , the precision mechanical arm 8 is fixed to the electrolytic cell 15 structure, adjusted to the correct position, ensuring that the mechanical arm can move freely inside the electrolytic cell.

[0031] Sensor installation: High-precision sensors 9 are inserted into the electrolytic cell 15 through the reserved holes (not marked in the figure) and fastened, ensuring their position is fixed.

[0032] Circuit connection: Connect the sensor and mechanical arm lines to the control system 10, and check the power supply and signal transmission.

[0033] Debugging parameter calibration: Calibrate the sensor through the control system to ensure it can accurately obtain data under actual operating conditions. Mechanical arm debugging: Test the motion of the mechanical arm through the control system to ensure that its motion range and accuracy meet the design requirements. System debugging: Debug the sensor data, mechanical arm control, and control system to ensure that the overall system can work together.

[0034] Real-time regulation process

[0035] Data collection and analysis

[0036] Sensor data collection: Real-time collection of internal operating parameters of the electrolytic cell, including temperature, current intensity, and negative electrode distance position data.

[0037] Data analysis: The control system analyzes the collected data in real time to determine whether the current negative electrode distance is in the optimal state.

[0038] Regulation instruction generation and execution: The control system has an optimization algorithm built-in, which generates adjustment instructions based on real-time data. For example: when the current density is too high or too low, issue instructions to increase or decrease the negative electrode distance.

[0039] Mechanical arm execution: After receiving the adjustment instructions, the precision mechanical arm immediately adjusts the position to ensure that the negative electrode distance adjustment accuracy is within 0.1mm.

[0040] Feedback and correction

[0041] Sensor feedback: During the adjustment process, the displacement sensor provides real-time feedback on the changes in the negative electrode distance.

[0042] Error correction: After receiving the feedback data, the control system performs error correction to ensure the accuracy and stability of the negative electrode distance regulation.

[0043] Long-term operation test and effect verification

[0044] Long-term operation test and effect verification: During the operation of the electrolytic cell, continuously monitor the sensor data, record the electrolytic efficiency, power consumption, and equipment state parameters.

[0045] Data logging: Regularly record and store operational data, and establish data archives.

[0046] Effect Analysis

[0047] Electrolysis efficiency analysis: By comparing the hydrogen production and current efficiency before and after optimization, the change in electrolysis efficiency was analyzed, confirming that the electrolysis efficiency was improved by more than 15%.

[0048] Energy consumption analysis: By recording energy consumption data over a long period, the total energy consumption before and after optimization is calculated, confirming an 8%-10% reduction in energy consumption. Equipment durability: The wear condition and failure rate of the electrolytic cell equipment are monitored to verify the improvement in equipment lifespan and safety after optimization.

[0049] Data presentation and summary

[0050] Data visualization: Visualize the recorded data, generate trend charts and comparison charts to intuitively show the changes in electrolysis efficiency and energy consumption.

[0051] Comprehensive analysis: Combining experimental data and actual working conditions, a comprehensive analysis is conducted to summarize the advantages and practical effects of the optimized system.

[0052] Through design, manufacturing, installation, commissioning, real-time control, and long-term operation testing, the above system can achieve precise control of the negative electrode distance, which not only improves electrolysis efficiency by more than 15% and reduces energy consumption by 8%-10%, but also significantly improves the durability and safety of the equipment.

[0053] The following explains in detail how to adjust the electrode spacing. Figure 3 As shown, the hydrogen production capacity is first 1000 Nm³. 3 The alkaline electrolytic cell (Figure 2) with a capacity of / h is located at the pre-set test position. Pipes, valves, flanges, etc., are installed, and copper busbars, cables, communication facilities, etc., are connected. Then, the assembled gantry robot 11 (Figure 3) is hoisted directly above the electrolytic cell, and the hardware is properly connected and all cables are in place. Simultaneously, a secondary hydraulic tensioner 12 (such as...) is used to tighten the electrolytic cell. Figure 1 ) in place, equipped with a secondary hydraulic station 14 (such as Figure 4 ) and electrical control cabinets (such as Figure 5 This forms a complete regulatory system.

[0054] After all facilities are installed, the secondary hydraulic tensioner is activated to begin hydraulically stretching and tightening the bolts at the end of the end pressure plate. The entire force acts on the end pressure plate, and is then transmitted through 18 tension bolts to components such as electrode plate 6, gasket 1, diaphragm 4, and elastic support net 7. The electrode spacing n (e.g., ...) Figure 2The positive and negative electrode distance is close to zero, and the gasket is pressed to 0.92-1.05mm in thickness, which can ensure that the common alkaline electrolytic tank is sealed well without leakage, and the electrode distance is close to zero, which is called zero electrode distance. When the elastic support net is installed, the electrode distance will be further compressed to-0.2-0.6mm, so it is called negative electrode distance (L1 in Fig. 4 can be considered as the distance between two adjacent small chambers. The distance L1 is measured by two mechanical gauges installed on the truss machine base. The truss mechanical arm uses a precision mechanical arm as a control device, and the negative electrode distance is accurately adjusted through a high-precision sensor and a control system, with an error of less than 0.1mm. The device can automatically adjust the negative electrode distance to the optimal state according to the actual operating conditions of the electrolytic tank, such as current intensity, electrolyte concentration and other parameters.

[0055] Another function is to accurately measure the total distance L0 between the two end plates (as shown in Fig. 4 Figure 5 ). The traditional method is to estimate by hand calculation, which often deviates greatly from the actual value and cannot accurately reflect the distance between the two end plates. In order to accurately control the distance, the truss mechanical hand drives the mechanical gauge to measure the electrode distance of the electrolytic tank chamber, and the displacement sensor and PLC can realize accurate automatic measurement.

[0056] It should be noted that the above embodiments are not intended to limit the scope of protection of the present application, and any equivalent transformation or substitution made on the basis of the above technical solutions falls within the scope of protection of the claims of the present application.

Claims

1. An electrode negative space precise regulation device, characterized in that, The control device includes a precision mechanical arm, a high-precision sensor, and a control system, The precision mechanical arm and the high-precision sensor are installed inside the electrolytic cell, the lines of the precision mechanical arm and the high-precision sensor are connected to the control system, and power supply access and signal transmission inspection are performed, The control system integrates the data of each sensor into the control system and realizes real-time communication through a data bus; The high-precision sensor includes a temperature sensor, a current sensor, and a displacement sensor, multiple temperature sensors are arranged along the surface of the electrode plate to monitor the temperature distribution in the electrolytic cell in real time to detect changes in thermal stress, and a high-precision displacement sensor is installed at the position of the electrode plate to monitor the deformation of the electrode plate in real time; The precision mechanical arm includes a linear guide rail and a precision screw assembly, an electric manipulator, and a stepping motor, an electric manipulator or a stepping motor is integrated in the electrolytic cell structure, the fine adjustment of the electrode plate is realized through displacement control, the linear guide rail and the screw assembly use high-precision guide rails and screw assemblies to ensure that the adjustment mechanism can stably and accurately adjust the small displacement.

2. The electrode negative electrode distance accurate regulation device according to claim 1, wherein, The control system includes PLC / DCS, responsible for comprehensive processing of sensor data and algorithmic control of the adjustment mechanism; Closed-loop control system: uses a feedback control loop to adjust the position of the electrode plate in real time to ensure that the negative electrode is always within the set range.

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