Electrolytic bath anti-sliding device based on bundling and fastening principle

Abstract

The utility model discloses an electrolytic bath anti-slip device based on the binding and fastening principle, which comprises strip-shaped supporting devices and a circumferential type hooping device, the strip-shaped supporting devices are arranged along the axial direction of an electrolytic bath, and the plurality of strip-shaped supporting devices are circumferentially distributed and arranged around the electrolytic bath in a surrounding manner; an inner side area enclosed by the plurality of strip-shaped supporting devices is used for limiting the polar plate, and the circumferential hooping device is used for simultaneously applying hooping force to the plurality of strip-shaped supporting devices so as to limit the radial position of the polar plate. The strip-shaped supporting devices are distributed in the axial direction of the electrolytic cell in a surrounding mode, the position of the polar plate can be effectively limited, and radial displacement of the polar plate is prevented. The circumferential hooping device applies hooping force to the plurality of strip-shaped supporting devices, so that the limitation on the radial position of the polar plate is further strengthened, and the stability of the polar plate in the running process is guaranteed; a three-dimensional displacement detection network formed by the on-line displacement monitoring device monitors the displacement change of the polar plate in real time, and discovers the abnormal displacement condition of the polar plate in time.

Description

Technical Field

[0001] This utility model relates to the field of electrolytic hydrogen production equipment, specifically to an anti-slip device for an electrolytic cell based on the principle of binding and fastening. Background Technology

[0002] Green electricity hydrogen production requires long-term stable operation of electrolyzers, but traditional assembly technology relies on manual adjustment and has a long maintenance cycle (average 6 months / time), making it difficult to adapt to the needs of large-scale production.

[0003] During the operation of a filter press electrolyzer, the stable connection between the electrode plates and the end plates is crucial for ensuring the safe and efficient operation of the equipment. Currently, the traditional method of electrode plate fastening mostly uses bolt connections, where the electrode plates are directly clamped and fixed between the two end plates, which are then tightened and secured using bolts. The connection between the two is achieved through the preload of the bolts. This fastening method is simple in structure and easy to install, and was widely used in early electrolyzer applications.

[0004] However, this technology has many insurmountable drawbacks. From a structural and stress perspective, bolt tightening easily leads to stress concentration. During electrolytic cell operation, internal mechanical stress and external environmental vibrations continuously act on the electrode plates. Due to the limited number of bolt fixing points, localized areas experience excessive stress. The electrolytic cell operates under high pressure (2~5MPa) and high current density (≥9,000A / m²), making the electrode plates and end plates prone to relative slippage due to mechanical stress and vibration, leading to seal failure and alkali leakage. During operation, the electrode plates and end plates are susceptible to radial slippage due to mechanical stress and vibration. Once slippage occurs, the sealing structure between the electrode plates and end plates fails, resulting in alkali leakage. Alkali leakage not only wastes electrolyte and corrodes other components of the electrolytic cell but can also cause serious safety accidents such as short circuits, forcing frequent equipment shutdowns for maintenance. Statistics show that for electrolytic cells using traditional bolt fastening methods, leakage caused by seal failure accounts for 15%-20% of the total operating time each year, significantly increasing equipment maintenance costs and enterprise production and operation costs.

[0005] In summary, existing plate fastening technologies for pressure filter electrolyzers have significant drawbacks in terms of stress distribution, anti-slip sealing, and maintenance costs. A new fastening technology is urgently needed to solve these problems and ensure the stable and efficient operation of the electrolyzer. Utility Model Content

[0006] The purpose of this invention is to overcome the defects in the existing technology and provide an anti-slip device for electrolytic cells based on the principle of binding and fastening.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows:

[0008] An anti-slip device for an electrolytic cell based on the principle of binding and fastening includes a strip support device and a circumferential clamping device. The strip support device is arranged along the axial direction of the electrolytic cell, and multiple strip support devices are arranged circumferentially around the electrolytic cell. The inner area enclosed by the multiple strip support devices limits the position of the electrode plate. The circumferential clamping device simultaneously applies clamping force to the multiple strip support devices to limit the radial position of the electrode plate.

[0009] Furthermore, the strip support device includes an H-beam, with the side of the H-beam facing the electrode plate being the contact side with the electrode plate, and the side of the H-beam away from the electrode plate being the clamping side where it connects with the clamping device.

[0010] Furthermore, the clamping device includes an arc-shaped clamp plate and a fastening part. At least one arc-shaped clamp plate is provided. The ends of the arc-shaped clamp plate are connected by the fastening part to form a ring-shaped clamping device. The connecting end of the arc-shaped clamp plate forms an adjustment opening for adjusting the clamping force. The fastening part is provided on the adjustment opening and its size is adjusted to change the pressure on the clamping side.

[0011] Furthermore, a U-shaped buckle is provided between the clamping side and the electrode plate. The U-shaped opening of the U-shaped buckle is clamped on both sides of the electrode plate. A shock-absorbing pad is provided inside the U-shaped opening of the U-shaped buckle. The outer side of the bottom arc of the U-shaped buckle is provided with a bottom opening that matches the flange of the H-shaped steel.

[0012] Furthermore, it also includes an online displacement monitoring device, which includes multiple permanent magnets set at the edge of the electrode plate, and Hall sensors set on the strip support device to cooperate with the permanent magnets. Multiple groups of permanent magnets and Hall sensors form a three-dimensional displacement detection network, and it also includes a central controller to collect the displacement of the electrode plate.

[0013] Furthermore, it also includes an adaptive jacking adjustment structure, which is disposed between the contact side of the electrode plate and the strip support device. The adaptive jacking adjustment structure includes jacking units arranged according to the number of adjustment support devices. Multiple jacking units are arranged around the electrode plate in the circumferential direction. Each jacking unit applies a radial thrust to the electrode plate to provide a reset driving force for it.

[0014] Furthermore, the adaptive jacking adjustment structure is connected to and controlled by the central controller to drive and adjust one or more jacking units; the jacking unit includes a wedge structure and an electric push rod, the wedge structure includes two cooperating inclined blocks, and the electric push rod is provided inside the two inclined blocks. The electric push rod pushes the inclined blocks to adjust the wedge insertion amount to change the support force on the electrode plate.

[0015] Furthermore, the wedge structure has an axial displacement protection structure on the inclined block near the electrode plate side, an axial groove is provided on the upper surface of the inclined block, a T-shaped slider is provided in the axial groove, and the slider slides axially in the axial groove; a return spring is provided between at least one end of the axial groove and the end of the T-shaped slider; a shock-absorbing pad is provided on the side of the T-shaped slider facing the electrode plate.

[0016] A method for using an anti-slip device for an electrolytic cell based on the principle of binding and fastening, characterized by a method for positioning the electrode plates during the electrolytic cell assembly stage:

[0017] S1: Vertical stacking assembly, starting from one end platen, placing it horizontally, stacking the electrode plates on the end platen in sequence, and keeping each electrode plate concentrically stacked with the end platen;

[0018] S2: Divide the electrolytic cell into multiple stacking height units. After each stacking of a height unit is completed, the verticality of the plates is corrected by using a straightedge or a temporary strapping strip support device to calibrate the edges of several plates in the height unit to keep them coaxial.

[0019] S3: After stacking all the electrode plates, insert U-shaped buckles around the electrode plates, install the strip support device around the electrode plates, so that the bottom arc opening of the U-shaped buckle can be inserted into the flange of the H-beam, and then use the clamping device to tie them together from top to bottom.

[0020] S4: Place the top end pressure plate and insert the tie rod bolt between the two end pressure plates;

[0021] S5: After tightening the tie rod bolts around the electrolytic cell, perform cold tightening and hot tightening in sequence.

[0022] It also includes a method for correcting the polarity of the plates during online operation:

[0023] S21: Initialization settings: An online displacement monitoring device is set between the contact side of the strip support device and the electrode plate to form a three-dimensional displacement detection network. The central controller is initialized, including setting the normal displacement range threshold and sampling frequency parameters.

[0024] S22: The central controller uses a built-in algorithm to convert the change in magnetic field strength into the displacement of the electrode plate; the central controller compares the displacement with the preset normal displacement range threshold to determine whether the electrode plate has experienced abnormal displacement and to issue an alarm and record the data.

[0025] S23: After detecting abnormal displacement of the electrode plate, the central controller analyzes the offset direction and offset amount of the electrode plate based on the collected displacement data, and determines the pushing adjustment strategy.

[0026] S24: The central controller sends control commands to the corresponding jacking unit to change the extension of the jacking unit;

[0027] S25: Based on the real-time monitored displacement data, the central controller continuously adjusts the action of the electric push rod until the displacement of the electrode plate returns to the normal range.

[0028] The advantages and beneficial effects of this utility model are as follows:

[0029] 1. The electrolytic cell anti-slip device based on the principle of binding and fastening has excellent anti-slip ability. For example, by using H-shaped steel distributed support, the displacement of the electrode plate is reduced from ±2mm in the traditional method to ±0.5mm, which reduces the leakage rate by 90% and greatly improves the equipment operation quality.

[0030] 2. The use of this device extends the service life of the equipment, improves stress uniformity by 40%, and extends the fatigue life of the electrode plate and end plate from 5 years to 10 years; thus extending the maintenance cycle and effectively reducing the maintenance frequency.

[0031] 3. In the application of electrode assembly, the modular H-beam steel frame reduces assembly time by 50% and labor costs by 20%, thereby improving installation efficiency and assembly accuracy.

[0032] 4. The strip support devices, distributed along the axial direction of the electrolytic cell and arranged in a circumferential manner, effectively restrict the position of the electrode plates and prevent radial displacement. The circumferential clamping device, by applying clamping force to multiple strip support devices, further strengthens the restriction on the radial position of the electrode plates, ensuring their stability during operation.

[0033] 5. The online displacement monitoring device utilizes a three-dimensional displacement detection network composed of permanent magnets and Hall effect sensors to monitor minute radial and axial displacement changes of the electrode plates in real time and with high accuracy. The central controller can collect and analyze this displacement data to promptly detect abnormal displacement of the electrode plates. The adaptive jacking adjustment structure can automatically adjust the thrust of the jacking unit based on the displacement data provided by the online displacement monitoring device, pushing the displaced electrode plates back to their original positions. This automatic adjustment function requires no manual intervention, improving the automation level and operating efficiency of the equipment. Attached Figure Description

[0034] Figure 1 This is an isometric drawing of an anti-slip device for an electrolytic cell based on the principle of binding and fastening, according to this utility model.

[0035] Figure 2 This is an exploded view of the anti-slip device for the electrolytic cell of this utility model;

[0036] Figure 3 This is a schematic diagram of the axial cross-section of the anti-slip device for the electrolytic cell of this utility model;

[0037] Figure 4This is a radial cross-sectional schematic diagram of the anti-slip device for the electrolytic cell of this utility model;

[0038] Figure 5 These are front and side views of the semi-circular circumferential clamping device of this utility model;

[0039] Figure 6 This is an exploded view of the semi-circular circumferential clamping device of this utility model;

[0040] Figure 7 This is a schematic diagram of the U-shaped buckle structure of the anti-slip device for the electrolytic cell of this utility model;

[0041] Figure 8 This is a schematic diagram of the adaptive jacking adjustment structure of the anti-slip device for the electrolytic cell of this utility model;

[0042] Figure 9 This is a longitudinal cross-sectional schematic diagram of the adaptive jacking adjustment structure of the anti-slip device for the electrolytic cell of this utility model;

[0043] Figure 10 This utility model relates to an anti-slip device for electrolytic cells. Figure 9 Schematic diagram of section AA;

[0044] In the diagram: 1. Electrolytic cell body; 2. Strip support device; 3. Circumferential clamping device; 4. Electrode plate; 5. Contact side; 6. Clamping side; 7. Arc clamping plate; 8. Fastening part; 9. Adjustment opening; 10. U-shaped buckle; 11. Flange; 12. Shock-absorbing pad; 13. Permanent magnet; 14. Hall sensor; 15. Three-dimensional displacement detection network; 16. Adaptive jacking adjustment structure; 17. Jacking unit; 18. Wedge structure; 19. Electric push rod; 20. Inclined block; 22. Axial displacement protection structure; 23. Axial groove; 24. T-shaped slider; 25. Return spring; 27. End pressure plate; 28. U-shaped opening; 29. ​​Bottom opening. Detailed Implementation

[0045] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0046] Green electricity-based hydrogen production requires the long-term stable operation of electrolyzers, but traditional assembly techniques rely on manual adjustments and have long maintenance cycles (averaging 6 months / time), making them unsuitable for large-scale production. Electrolyzers operate under high pressure (2~5MPa) and high current density (≥9,000A / m²), and the electrodes and end plates are prone to relative slippage due to mechanical stress and vibration, leading to seal failure and alkali leakage. Traditional bolt-fastening methods suffer from stress concentration problems; excessive stress in localized areas may cause material fatigue and shorten equipment lifespan.

[0047] Existing disadvantages: slippage risk, under high pressure (2~5MPa) and vibration environment, the electrode plate and end plate are prone to relative displacement, resulting in sealing failure and alkaline leakage; local stress concentration, traditional fastening methods (such as single-point bolts) lead to uneven stress distribution, accelerate material fatigue and shorten equipment life; high maintenance cost, leakage caused by slippage requires frequent shutdown for maintenance, increasing maintenance cost by 20%~50%.

[0048] This utility model proposes an anti-slip device for electrolytic cells based on the principle of binding and fastening, such as... Figure 1-6 As shown, specifically, it includes a strip support device 2 and a circumferential clamping device 3. The strip support device 2 is arranged along the axial direction of the electrolytic cell. Multiple strip support devices 2 are arranged circumferentially around the electrolytic cell, thereby forming a multi-point limiting around each electrode plate 4 by clamping the edges of the electrode plates 4 through the surrounding strip support devices 2. The inner area enclosed by multiple strip support devices 2 limits the electrode plates 4. The circumferential clamping device 3 simultaneously applies clamping force to multiple strip support devices 2 to limit the radial position of the electrode plates 4. In use, by the multiple rings of circumferential clamping devices 3 arranged around the strip support devices 2, an integrated binding and fixing can be formed, so that the electrode plates 4 are no longer independent plates, but are formed into an organic whole by the anti-slip device. This changes the existing technology where the plates of the electrode plates 4 are tightened by tie rod bolts to the end pressure plates 27 at both ends, and then the two end pressure plates 27 clamp each electrode plate 4 and the gasket towards the center, and the positioning is achieved by the friction formed by the clamping between the gaskets. This commonly used positioning method is prone to radial slippage in high-pressure, vibration-prone, and high-current-density production environments. This is because thermal expansion and contraction, vibration, and other factors can cause the friction between the plates 4 to be unable to overcome the influence of gravity and other factors. This can lead to sealing failure between the plates 4 and serious consequences.

[0049] Example 1:

[0050] As one embodiment of this design, the strip support device 2 specifically includes strip profiles such as H-beams, I-beams, C-beams, rails, square steel, flat steel, and angle steel; and its material is not limited to steel, but can also be high-strength raw materials such as aluminum alloys and titanium alloys. The materials cover high-strength alloy steel (such as Q345B, yield strength ≥345MPa), aluminum alloy (such as 6061-T6, tensile strength ≥310MPa), titanium alloy (such as TC4, tensile strength ≥895MPa), etc.; in this embodiment, only H-beams are used as an example for specific explanation.

[0051] like Figure 1-6As shown, the side of the H-shaped steel wing facing the electrode plate 4 is the contact side 5 with the electrode plate 4, and the side of the wing away from the electrode plate 4 is the clamping side 6 where it connects with the clamping device. Specifically, multiple H-shaped steels can be provided, the length of which is not greater than the axial length formed by the electrode plate 4 of the electrolytic cell, and the H-shaped steels are placed between two adjacent tie rod bolts on the outer periphery of the electrode plate 4.

[0052] Dimensional parameters: The length of the H-beam is customized based on the axial length of the electrode plate 4 of the electrolytic cell, and generally does not exceed 95% of the axial length of the electrode plate 4 to ensure that it does not extend beyond the end of the electrolytic cell after installation. For example, for an electrolytic cell with an axial length of 2000mm for the electrode plate 4, the length of the H-beam can be set to 1800-1900mm. Its specifications are selected in accordance with GB / T11263 standard, with common models such as H200×200×8×12 (height 200mm, flange 11 width 200mm, web thickness 8mm, flange 11 thickness 12mm).

[0053] In actual use, the flange 11 of the H-beam can be directly attached to the outer periphery of the electrode plate 4 for binding. It is understood that this implementation method should be equipped with insulating material on the flange 11 of the H-beam.

[0054] As a further improvement, a U-shaped buckle 10 is provided between the clamping side 6 and the electrode plate 4. The U-shaped opening 28 of the U-shaped buckle 10 is engaged with both sides of the electrode plate 4. A shock-absorbing pad 12 is provided inside the U-shaped opening 28 of the U-shaped buckle 10. A bottom opening 29 that mates with the H-shaped steel flange 11 is provided on the outer side of the bottom arc of the U-shaped buckle 10. Figure 7 As shown, the width of the U-shaped opening 28 of the U-shaped buckle 10 corresponds to the gap between one or more electrode plates 4, so that the U-shaped opening 28 is locked on the electrode plate 4. The outer side of the bottom arc of the U-shaped buckle 10 is locked on the flange 11 of the H-beam. In this embodiment, the bottom opening 29 of the U-shaped buckle 10 is perpendicular to the axial direction of the U-shaped opening 28, so as to accommodate and compensate for the axial sliding of the electrode plate 4. The shock-absorbing pad 12 provided in the U-shaped opening 28 can achieve an effective shock absorption effect and also play a good insulation role.

[0055] Furthermore, the clamping device includes an arc-shaped clamping plate 7 and a fastening part 8. At least one arc-shaped clamping plate 7 is provided, and the ends of the arc-shaped clamping plates 7 are connected by the fastening part 8 to form an annular clamping device. The connecting end of the arc-shaped clamping plate 7 forms an adjustment opening 9 for adjusting the clamping force. The fastening part 8 is provided on the adjustment opening 9 and its size is adjusted to change the pressure on the clamping side 6.

[0056] As one embodiment of the clamping device, the arc-shaped clamp plate 7 can be composed of ribs and arc plates welded in a T-shape. The arc-shaped clamp plate 7 can be designed as a semi-circle, a quarter arc, or a third arc, etc. The number of divisions of the arc-shaped clamp plate 7 is not limited and can be flexibly improved according to actual assembly requirements.

[0057] In this embodiment, the fastening part 8 is an end plate set at the end of the arc-shaped hoop 7. When the arc-shaped hoop 7 are connected, the bolts pass through the end plate and are tightened. Then the clamping pressure of the clamping part on the H-beam can be adjusted, thereby increasing the limiting and fastening pressure on the inner electrode plate 4. In actual use, the clamping device is sleeved on the electrode slot electrode plate 4 in multiple rings. In this embodiment, three rings are set as an example, respectively in the middle and at both ends. If the length of the electrolytic cell increases, the length of the strip support device 2 and the number of circumferential clamping devices 3 can be increased as needed.

[0058] The arc-shaped hoop plate 7 structure employs a T-shaped welding process between ribs and arc plates. The material used is Q235B steel plate, with rib thickness of 8-10mm and arc plate thickness of 6-8mm. The arc-shaped hoop plate 7 can be divided into semicircles, quarter-circles, etc. Taking a quarter-circle arc plate as an example, its central angle is 90°. Figure 4 As shown, the arc length is calculated based on the outer diameter of the electrolytic cell. For example, if the outer diameter of the electrolytic cell is 1000mm, the arc length of a single quarter-circle arc plate is approximately 785mm.

[0059] The fastening part 8 is an end plate welded to the end, with bolt holes on the end plate. The hole diameter is 1-2 mm larger than the bolt diameter. M12-M16 high-strength bolts (performance grade 8.8) are passed through the end plate and tightened. The initial bolt preload torque is set to 80-120 N·m, and the adjustable clamping force range is 5-15 kN. In practical applications, multiple clamping devices are set according to the length of the electrolytic cell. For a 2000 mm long electrolytic cell, one ring is usually arranged at each end and in the middle, with each ring consisting of 4-8 arc-shaped clamping plates 7 spliced ​​together.

[0060] Through the above-mentioned optimized design, this anti-slip device can significantly reduce the risk of plate 4 slippage, distribute stress evenly to extend equipment life, reduce downtime maintenance caused by leakage, and provide a reliable guarantee for the stable operation of the green electricity hydrogen electrolyzer.

[0061] Example 2:

[0062] This embodiment still uses the strip support device 2 and the circumferential clamping device 3, which are consistent with the previous embodiment. However, this embodiment adds a displacement monitoring design for the electrode plate 4. Specifically, as follows... Figure 1 , 4As shown, an online displacement monitoring device includes multiple permanent magnets 13 disposed on the edge of the pole plate 4. The permanent magnets 13 are disposed in the following manner: specifically, a neodymium iron boron permanent magnet 13 is embedded at the midpoint of the position corresponding to the strip support device on the edge of the pole plate 4. Specifically, the magnet is of grade N52, with a remanence strength ≥1.43T and dimensions of 15mm × 10mm × 5mm. A high-precision Hall sensor 14 is installed on the H-shaped steel flange 11 at the corresponding position. Specifically, the sensor is model SS495A, with a linearity of ±0.1%, a resolution of 0.01mm, and an operating voltage of DC5V. The Hall sensors 14, which cooperate with the permanent magnets 13 and are disposed on the strip support device 2, form a three-dimensional displacement detection network 15 in the axial direction. Figure 1 As shown by the dashed line, it also includes a central controller to collect the displacement of the electrode plate 4. At least four sets of permanent magnets 13-Hall sensors 14 can be arranged around the electrode plate 4 to calibrate the lateral or longitudinal displacement of the electrode plate 4, ensuring full coverage of the displacement detection area of ​​the electrode plate 4.

[0063] The Hall sensor 14 transmits the detected magnetic field strength data to the central controller via a shielded cable. Specifically, it uses an industrial-grade PLC, model Siemens S7-1200, with a processing speed of 0.08μs / instruction. The central controller incorporates a dedicated algorithm based on a magnetic dipole model to convert changes in magnetic field strength into displacement of the pole plate 4, with a calculation error rate of <0.3%. Displacement alarm thresholds are set: radial displacement ≥0.2mm, axial displacement ≥0.15mm (alarm thresholds can be set as needed). When displacement exceeds the limits, the central controller triggers an audible and visual alarm and records the time, direction, and specific value of the displacement.

[0064] Before the system is put into use, the three-dimensional displacement detection network 15 needs to be calibrated. A high-precision displacement calibrator (accuracy ±0.005mm) is used to simulate the movement of the electrode plate 4 in different directions and with different displacement amounts, adjusting the parameters of the Hall sensor 14 to ensure the accuracy of the detection data. In routine maintenance, the permanent magnet 13 and Hall sensor 14 are cleaned quarterly, and the shielded cable connections are checked for looseness. The central controller algorithm is updated and optimized annually to ensure the long-term stable operation of the monitoring system.

[0065] Through the above embodiments, this anti-slip device, combined with displacement monitoring design, can monitor the operating status of electrode plate 4 in real time, further reducing the risk of equipment failure caused by slippage, improving the reliability and stability of the electrolyzer in green electricity hydrogen production applications, and effectively reducing maintenance costs and downtime.

[0066] Example 3:

[0067] This embodiment is a further improved design based on the aforementioned Embodiment 2, specifically, as follows: Figure 8-10 As shown, this embodiment includes an adaptive push-adjustment structure 16, which is an improvement upon the U-shaped buckle 10 in Embodiment 1. Based on the improvements to the adaptive push-adjustment structure 16 in this embodiment and the monitoring results from Embodiment 2, the electrode plate 4 is adjusted accordingly, as follows:

[0068] The adaptive jacking adjustment structure 16 is disposed between the electrode plate 4 and the contact side 5 of the strip support device 2 (corresponding to the U-shaped buckle 10). The adaptive jacking adjustment structure 16 includes jacking units 17 arranged to adjust the number of support devices. Multiple jacking units 17 are arranged around the electrode plate 4 in a circumferential manner. Each jacking unit 17 applies a radial thrust to the electrode plate 4 to provide a reset driving force for it.

[0069] Feasibility Study: Mechanical Analysis. Specifically, although the electrode plate 4 of the pressure filter electrolytic cell is tightened at both ends by bolts, it is mainly subjected to friction and inertial forces during radial movement. Assuming that the mass of a single electrode plate 4 is 50 kg and the coefficient of friction with the supporting surface is 0.2, its maximum static friction force is F = μmg = 0.2 × 50 × 9.8 = 98 N. In this scheme, the jacking unit 17 is set up with eight strip support devices 2 as an example according to the aforementioned embodiment. Then, eight sets of jacking units 17 are axially distributed on the cross section of an electrode plate 4. For example, the thrust of the jacking unit 17 is designed to be 30-50N. By arranging a total of 8 sets of jacking units 17 at multiple points at the four corners and edges of the electrode plate 4, the total thrust can reach 240-400N (it can be understood that this thrust value is not limited and can be increased or decreased according to actual needs). It is much greater than the maximum static friction force. In actual use, for the offset phenomenon of some electrode plates 4 in the adjustment area, a jacking force in a certain direction (opposite to the offset direction of the electrode plate 4) can be continuously applied to make the electrode plate 4 gradually return to its original position.

[0070] As one implementation method, the push unit 17 can be directly selected as a hydraulic push rod or an electric push rod 19, which is arranged radially and can extend and retract radially to control the push and reset of the electrode plate 4. It is understood that although this implementation method is simple, its ability to resist axial displacement of the electrode plate 4 is relatively weak.

[0071] As an improved implementation, specifically, the adaptive jacking adjustment structure 16 is connected to and controlled by the central controller to drive and adjust one or more jacking units 17; the jacking unit 17 includes a wedge structure 18 and an electric push rod 19. The wedge structure 18 includes two cooperating inclined blocks 20, and the electric push rod 19 is provided inside the two inclined blocks 20. The electric push rod 19 pushes the inclined blocks 20 to adjust the wedge insertion amount to change the support force on the electrode plate 4.

[0072] This embodiment employs a wedge structure 18, which increases the axial contact range between the inclined block 20 and the strip support device 2, thereby providing stronger axial displacement resistance. Furthermore, the wedge structure 18 has an axial displacement protection structure 22 on the inclined block 20 near the electrode plate 4, and an axial groove 23 is provided on the upper surface of the inclined block 20. A T-shaped slider 24 is provided in the axial groove 23, and the slider slides axially within the axial groove 23. A return spring 25 is connected between at least one end of the axial groove 23 and the end of the T-shaped slider 24. A shock-absorbing pad 12 is provided on the side of the T-shaped slider 24 facing the electrode plate 4.

[0073] Specifically, the wedge structure 18 consists of two interlocking inclined blocks 20 with a 15° inclination angle. The material is 45# steel, hardened to HRC45-50 after quenching. Each inclined block 20 measures 80mm long × 50mm wide × 40mm high, and the total height of the two blocks stacked together is 60mm. The electric actuator 19, in this embodiment, is a miniature electric actuator 19 (model DT-50, stroke 20mm, maximum thrust 50N, repeatability ±0.1mm, operating voltage DC24V), with a built-in high-precision displacement sensor providing real-time feedback on the actuator's extension and retraction.

[0074] The central controller calculates the required wedging depth for each jacking unit 17 based on data from the online displacement monitoring device. The electric push rod 19 pushes the inclined block 20 to slide along the inclined plane, converting the linear displacement of the push rod into a radial thrust on the pole plate 4 using trigonometric functions (tan15°≈0.268). For example, when the push rod extends 10mm, it can generate a radial thrust of approximately 26.8N.

[0075] An axial groove 23 is formed on the upper surface of the inclined block 20 near the electrode plate 4. For example, the groove is 60mm long, 12mm wide, and 8mm deep. The T-shaped slider 24 measures 50mm long × 10mm wide × 15mm high (including a 10mm × 5mm boss), and its clearance fit with the axial groove 23 has a tolerance of H7 / g6, ensuring that the slider slides freely within the groove without significant wobble. A neoprene rubber shock-absorbing pad 12, 5mm thick, with a Shore hardness of 55HA and a surface roughness of Ra3.2μm, is attached to the side of the T-shaped slider 24 facing the electrode plate 4. The shock-absorbing pad 12 is fixed with a high-temperature and alkali-resistant special adhesive (bonding strength ≥15MPa), effectively absorbing the impact force during the pushing process while isolating the electrical connection. Return spring 25: A cylindrical helical compression spring is selected, made of 65Mn material, with a wire diameter of 2mm, an outer diameter of 12mm, a free height of 30mm, a spring stiffness coefficient of 18N / mm, and a pre-compression of 5mm, to ensure stable buffering and restoring force when the electrode plate 4 is axially displaced.

[0076] The central controller acquires data from Hall sensor 14 at 100ms intervals. When the radial displacement of electrode 4 exceeds 0.3mm, it triggers the push adjustment program. Thrust calculation and distribution: Based on the displacement direction and value, a PID control algorithm is used to calculate the target stroke of the electric push rod 19 of each push unit 17. For example, when electrode 4 shifts 0.5mm to the right, the extension of the push rod of the left push unit 17 is calculated as: 0.5mm / tan15°≈1.86mm. Adjustment execution and feedback: The electric push rod 19 performs the adjustment action at a speed of 0.5mm / s, feeding back the actual stroke data to the central controller every 0.1s, forming a closed-loop control. When the displacement of electrode 4 returns to within 0.1mm, the system stops adjusting and enters continuous monitoring mode.

[0077] Through the above embodiments, the adaptive jacking adjustment structure 16 can respond to the displacement of the electrode plate 4 in real time during the operation of the electrolytic cell. Through the wedge-type jacking and axial protection design, the stability of the equipment under high pressure and vibration environment is effectively improved. Compared with the traditional method, the electrode plate 4 reset efficiency is increased by more than 60%, and the downtime caused by displacement failure is reduced by 70%.

[0078] A method for using an anti-slip device for an electrolytic cell based on the principle of binding and fastening is disclosed. Specifically, this method addresses the positioning of electrode plate 4 during the electrolytic cell assembly stage. By standardizing the operating procedures and controlling parameters, it ensures the precise assembly of the anti-slip device and electrode plate 4, thereby improving the accuracy and efficiency of electrolytic cell assembly. The specific steps are as follows:

[0079] S1: Vertical stacking base positioning

[0080] Fix the end pressure plate 27 horizontally to the assembly platform, ensuring the platform's flatness error is within ±0.2mm. Using the center positioning hole of the end pressure plate 27 as a reference, stack the electrode plates 4 sequentially. When placing each electrode plate 4, ensure that the electrode plates 4 are neatly stacked along the vertical axis.

[0081] S2: Segmented calibration of verticality

[0082] Based on the total length of the electrolytic cell, stacking height units are divided at intervals of 1-1.5 meters. For each completed stack of 4 electrode plates in a height unit, the following two calibration methods can be used:

[0083] Straightedge calibration: Use a high-precision straightedge with an accuracy of 0.02mm / m, close to the edge of the electrode plate 4, to measure the perpendicularity of the electrode plate 4, and make fine adjustments to the electrode plate 4 with a deviation > 0.5mm;

[0084] Temporary support and fixation, namely the anti-slip device of this utility model: temporarily install strip support devices 2 along the circumference of the electrode plate 4 (install one every 300-500mm), and forcibly calibrate the verticality of the electrode plate 4 by adjusting the tightness of the support devices. For example, when the electrode plates 4 are stacked to a height of 50cm, the anti-slip device is used to tighten the electrode plates 4 once; then tighten and calibrate again when it reaches 100cm, thereby improving the stacking accuracy of the electrode plates 4.

[0085] S3: Installation of anti-slip device

[0086] U-shaped buckle 10 pre-installation: On the outer periphery of the stacked electrode plate 4 groups, install U-shaped buckle 10 on electrode plate 4. The buckle openings lock the two sides of electrode plate 4 to ensure that the shock-absorbing pad 12 is tightly attached to electrode plate 4, and the installation error is ≤1mm.

[0087] Assembly of strip support device 2: Install H-beams along the axial direction of the electrolytic cell, so that the bottom arc opening of U-shaped buckle 10 is inserted into the flange 11 of H-beams. Use special clamps to assist in positioning to ensure that the parallelism error between H-beams and electrode plates 4 is ≤0.2mm.

[0088] Tightening the clamping device: Starting from the top of the electrolytic cell and moving downwards, install the arc-shaped clamping plates 7 in sequence, and adjust the clamping force through the fastening parts 8 (bolts). The initial bolt pre-tightening torque is set to 80-100 N·m. After each round of clamping plates is installed, use a torque wrench to perform cross-tightening to ensure that the clamping force is evenly distributed.

[0089] S4: Installation of end pressure plate 27 and tie rod bolts

[0090] Place the top end pressure plate 27 stably above the electrode plate 4 group, aligning it with the preset positioning holes. Select high-strength tie rod bolts (performance grade 10.9) and insert them sequentially into the reserved holes of the two end pressure plates 27 and the electrode plate 4. Ensure the bolts are perpendicular when inserted to avoid damaging the threads.

[0091] S5: Bolt tightening and stress treatment

[0092] Cold tightening operation: Use a step-by-step cross-tightening method, tighten the tie rod bolts in a diagonal sequence, and the initial tightening torque should reach 50% of the design value (the design torque is calculated according to the specifications of the electrolytic cell, generally 200-300 N·m). After completing the first round of tightening, repeat the operation until the design torque reaches 80%.

[0093] Hot tightening treatment: Pass a medium at the rated working temperature (such as alkaline electrolyte at 80-90℃) into the electrolytic cell to make the whole equipment expand due to heat. After the temperature stabilizes for 30 minutes, tighten the tie rod bolts again in diagonal order to achieve 100% of the design torque and eliminate stress relaxation caused by temperature changes.

[0094] Fastening effect test: Use an ultrasonic stress tester to test the residual stress of the tie rod bolts to ensure that the stress distribution uniformity deviation is ≤10%. At the same time, use a feeler gauge to test the gap between the end pressure plate 27 and the pole plate 4, and the gap value is required to be ≤0.1mm.

[0095] This method effectively improves the assembly accuracy of the electrolytic cell, reduces the risk of electrode slippage due to assembly errors, and ensures long-term stable operation of the equipment. If you require adjustments to the steps or parameter settings, please feel free to suggest them.

[0096] Furthermore, it also includes a method for correcting the polarity of plate 4 during online operation:

[0097] This method, based on the online displacement monitoring and adaptive jacking adjustment structure 16 of the anti-slip device for the electrolytic cell, achieves online detection and precise correction of abnormal displacement of the electrode plate 4 through standardized procedures and precise control. The specific steps are as follows:

[0098] S21: System Initialization and Parameter Setting

[0099] Monitoring device installation: Permanent magnets 13 and Hall sensors 14 are installed at the corresponding positions of the contact side 5 of the strip support device 2 (H-beam) and the pole plate 4 according to the principle of three-dimensional spatial distribution. Neodymium iron boron permanent magnets 13 (size 15mm×10mm×5mm, remanence strength ≥1.43T) are embedded at the four corners and the midpoint of each side of the pole plate 4. High-precision Hall sensors 14 are installed corresponding to the flanges 11 of the H-beam, ensuring that the distance between the sensor and the permanent magnet 13 is controlled at 5-8mm, thus constructing a three-dimensional displacement detection network 15 covering the radial (X, Y axis) and axial (Z axis) directions of the pole plate 4.

[0100] Parameter configuration: Initialize the central controller and set the normal displacement range thresholds: radial displacement ≤ 0.2mm, axial displacement ≤ 0.15mm; the sampling frequency is 10 times / second to ensure real-time capture of minute displacement changes of the electrode plate 4; at the same time, configure the alarm delay time to 2 seconds to avoid false alarms due to momentary interference.

[0101] S22: Displacement Data Processing and Anomaly Detection

[0102] Data Conversion: Hall sensor 14 collects magnetic field strength data of permanent magnet 13 at a set frequency and transmits it to central controller via shielded cable. The controller uses a built-in dedicated algorithm based on a magnetic dipole model to convert the change in magnetic field strength into the displacement of pole plate 4, with the calculation error rate controlled within <0.3%.

[0103] Anomaly detection and response: The central controller compares the calculated displacement with the preset threshold in real time. When any axial displacement exceeds the limit, the audible and visual alarm device is immediately triggered and the time of the anomaly, displacement direction, specific value and related sensor number are recorded. At the same time, a warning message is sent to the remote monitoring terminal.

[0104] S23: Intelligent Planning for Correction Strategies

[0105] Based on the collected displacement data, the central controller uses a vector analysis algorithm to determine the offset direction and amount of electrode 4. A jacking adjustment strategy is then formulated according to the degree of offset.

[0106] Slight offset (displacement 0.2-0.3mm): Prioritize driving the corresponding push unit 17 on the opposite side of the displacement direction. The thrust of a single push unit 17 is set to 20-30N for lifting, while the push unit 17 on the same side of the displacement direction reduces the thrust. Under the action of the thrust difference, the electrode plate 4 is gradually reset.

[0107] Moderate offset (displacement 0.3-0.5mm): The symmetrical jacking units 17 on both sides of the displacement direction are activated to work together, and the total thrust is increased to 50-80N;

[0108] Severe displacement (displacement > 0.5mm): Activate all 8 sets of push units 17 in the circumferential direction of the electrode plate 4, and adopt an alternating incremental thrust mode to gradually increase the total thrust to 120-150N, so as to avoid damage to the electrode plate 4 due to excessive instantaneous thrust.

[0109] S24: Execution of push adjustment command

[0110] According to the determined correction strategy, the central controller sends control commands to the electric push rod 19 of the corresponding pushing unit 17. The commands include target stroke and motion speed parameters. The push rod extends and retracts at a uniform speed of 0.5 mm / s, and the linear displacement is converted into radial thrust through the wedge structure 18. During execution, the electric push rod 19 has a built-in displacement sensor that feeds back the actual stroke data to the controller at 100 ms intervals to ensure the accuracy of the action.

[0111] S25: Closed-loop control and correction completed.

[0112] The central controller dynamically adjusts the action of the electric push rod 19 based on the displacement data monitored in real time by the Hall sensor 14, using a PID (proportional-integral-derivative) control algorithm. When the displacement of the electrode plate 4 drops to 50% of the normal threshold (i.e., radial ≤0.1mm, axial ≤0.075mm), the thrust of the jacking unit 17 is gradually reduced. After the displacement returns to the normal range, stable monitoring is maintained for 10 seconds. Once it is confirmed that there is no recurrence of offset, the system exits the correction mode and returns to the normal monitoring state. At the same time, the complete correction process data (adjustment time, thrust change curve, etc.) is stored in the database for subsequent equipment maintenance and performance analysis.

[0113] The optimized plate 4 correction method significantly improves the stability and fault response efficiency of the electrolytic cell's online operation through quantitative parameters, hierarchical strategies and closed-loop control. Compared with the traditional manual intervention method, the correction time is shortened by more than 70% and the downtime rate caused by displacement faults is reduced by 80%.

[0114] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An anti-slip device for an electrolytic cell based on the principle of binding and fastening, characterized in that, It includes a strip support device and a circumferential clamping device. The strip support device is arranged along the axial direction of the electrolytic cell. Multiple strip support devices are arranged circumferentially around the electrolytic cell. The inner area enclosed by the multiple strip support devices limits the electrode plate. The circumferential clamping device simultaneously applies clamping force to the multiple strip support devices to limit the radial position of the electrode plate.

2. The anti-slip device for an electrolytic cell based on the principle of binding and fastening as described in claim 1, characterized in that, The side of the support device facing the electrode plate is the contact side with the electrode plate, and the side of the wing plate away from the electrode plate is the clamping side where it connects with the clamping device.

3. The anti-slip device for an electrolytic cell based on the principle of binding and fastening as described in claim 2, characterized in that, The clamping device includes an arc-shaped clamp plate and a fastening part. At least one arc-shaped clamp plate is provided. The ends of the arc-shaped clamp plates are connected by the fastening part to form a ring-shaped clamping device. The connecting end of the arc-shaped clamp plate forms an adjustment opening for adjusting the clamping force. The fastening part is provided on the adjustment opening and its size is adjusted to change the pressure on the clamping side.

4. The anti-slip device for an electrolytic cell based on the principle of binding and fastening as described in claim 3, characterized in that, A U-shaped buckle is provided between the clamping side and the electrode plate. The U-shaped opening of the U-shaped buckle is locked on both sides of the electrode plate. A shock-absorbing pad is provided inside the U-shaped opening of the U-shaped buckle. The outer side of the bottom arc of the U-shaped buckle is provided with a bottom opening that matches the flange of the H-shaped steel.

5. The anti-slip device for an electrolytic cell based on the principle of binding and fastening as described in claim 1, characterized in that, It also includes an online displacement monitoring device, which includes multiple permanent magnets set at the edge of the electrode plate and Hall sensors set on the strip support device to cooperate with the permanent magnets. Multiple groups of permanent magnets and Hall sensors form a three-dimensional displacement detection network. It also includes a central controller to collect the displacement of the electrode plate.

6. An anti-slip device for an electrolytic cell based on the principle of binding and fastening, as described in any one of claims 1, 2, 3, or 5, characterized in that, It also includes an adaptive jacking adjustment structure, which is set between the contact side of the electrode plate and the strip support device. Multiple jacking units are arranged around the circumference of the electrode plate, and each jacking unit applies radial thrust to the electrode plate to provide a reset driving force for it.

7. The anti-slip device for an electrolytic cell based on the principle of binding and fastening as described in claim 6, characterized in that, The adaptive jacking adjustment structure is connected to and controlled by the central controller to drive and adjust one or more jacking units. The jacking unit includes a wedge structure and an electric push rod. The wedge structure includes two cooperating inclined blocks. The electric push rod is provided inside the two inclined blocks. The electric push rod pushes the inclined blocks to adjust the wedge insertion amount to change the support force on the electrode plate.

8. The anti-slip device for an electrolytic cell based on the principle of binding and fastening as described in claim 7, characterized in that, The wedge structure has an axial displacement protection structure on the inclined block near the electrode plate. An axial groove is provided on the upper surface of the inclined block, and a T-shaped slider is provided in the axial groove. The slider slides axially in the axial groove. A return spring is provided between at least one end of the axial groove and the end of the T-shaped slider. A shock-absorbing pad is provided on the side of the T-shaped slider facing the electrode plate.

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