Portable disassembly and assembly mechanism for electrolytic cell

Abstract

The invention relates to the technical field of electrolytic baths, and provides an electrolytic bath portable dismounting mechanism which comprises a hydraulic machine, a plurality of bipolar plate assemblies and a tension compensation device, the hydraulic machine is provided with a first fixed end plate and a movable end plate, and the bipolar plate assemblies are arranged between the first fixed end plate and the movable end plate; the movable end plate can be close to the first fixed end plate along the first direction so as to extrude the plurality of bipolar plate assemblies to be in a pressed state; the tension compensation device comprises a first flexible traction assembly and a second flexible traction assembly, the first flexible traction assembly is arranged on the first fixed end plate, the second flexible traction assembly is arranged on the movable end plate, and the first flexible traction assembly and / or the second flexible traction assembly can apply balanced tension to the bipolar plate assembly. According to the invention, when the failed bipolar plate assembly is removed, balanced pulling force can be applied to multiple bipolar plate assemblies which do not fail, so that the pressure reduced due to the movement of the movable end plate is compensated, and the reliability and the stability of equipment are improved.

Description

Technical Field

[0001] The invention relates to the technical field of electrolytic cells, and in particular to a portable disassembly and assembly mechanism for an electrolytic cell. Background Art

[0002] As a fuel, hydrogen has the characteristics of high calorific value and high efficiency. As a fuel combustion product, there is only water, which will not pollute the environment. Therefore, hydrogen energy is an extremely superior secondary energy source and the cleanest and most efficient new energy source in the 21st century. At present, the alkaline water electrolysis hydrogen production technology has received widespread attention and recognition, and this technology is mainly based on circular electrolyzers and square electrolyzers. The unique structure of the square electrolyzer makes it easier to disassemble and assemble than the circular electrolyzer.

[0003] In the prior art, after a square electrolytic cell has local parts damaged, a manual inspection is performed to determine the damaged location, then a flexible connector is connected to the locking structure and the cell body, the locking structure is rotated to tighten the flexible connector, and the bipolar plate assemblies on both sides of the damaged frame are driven by the displacement of an extruder, then the lifting equipment is manually connected to the damaged bipolar plate assembly, and the lifting equipment is controlled to lift it out; then a new bipolar plate assembly is lifted in; it is squeezed tightly by an extruder; and finally the locking structure, lifting parts, etc. are disassembled.

[0004] However, there are many manually controlled disassembly and assembly processes in the process. Once an accident occurs, the safety of personnel cannot be guaranteed, especially in the alkaline environment of water electrolysis for hydrogen production and in flammable and explosive environments. For bipolar plate assemblies that do not need to be replaced, the manual tightening of the locking structure cannot achieve consistent tightening force, which will cause inconsistent gasket rebound force on the bipolar plate assembly during the loosening of the extruder. Each disassembly and assembly will cause certain damage to the bipolar plate assembly, affecting its service life. Summary of the invention

[0005] The invention provides a portable disassembly and assembly mechanism for an electrolytic cell, which is used to solve the problem in the prior art that when a damaged bipolar plate assembly is replaced, the bipolar plate assembly is easily damaged due to pressure fluctuation.

[0006] The present invention provides a portable disassembly and assembly mechanism for an electrolytic cell, comprising: A hydraulic press is provided with a first fixed end plate and a movable end plate; A plurality of bipolar plate assemblies are provided, wherein the plurality of bipolar plate assemblies are provided between the first fixed end plate and the movable end plate, and the movable end plate can approach the first fixed end plate along a first direction to squeeze the plurality of bipolar plate assemblies to put them in a compressed state; The tension compensation device includes a first flexible traction component and a second flexible traction component, wherein the first flexible traction component is arranged on the first fixed end plate, and the second flexible traction component is arranged on the movable end plate. The first flexible traction component and / or the second flexible traction component can apply a balanced tension to the bipolar plate assembly, and is used to compensate for the pressure of multiple bipolar plate assemblies that are not in a faulty state when the movable end plate moves away from the first fixed end plate along a first direction to remove a faulty bipolar plate assembly, so that the multiple bipolar plate assemblies that are not in a faulty state are subjected to the same pressure under the action of the compensation pressure as those in the compressed state.

[0007] The portable disassembly and assembly mechanism of the electrolytic cell provided by the present invention also includes a second fixed end plate, a main oil cylinder is arranged on the second fixed end plate, and the driving rod of the main oil cylinder is connected to the movable end plate; a cross beam is arranged between the second fixed end plate and the first fixed end plate, and the movable end plate and the bipolar plate assembly are both slidably connected to the cross beam along the first direction.

[0008] The portable disassembly and assembly mechanism of the electrolytic cell provided by the present invention further includes a control station, which includes an oil tank and a controller. The main oil cylinder is connected to the oil tank through a pipeline, and the main oil cylinder is electrically connected to the controller.

[0009] According to the portable disassembly and assembly mechanism of the electrolytic cell provided by the present invention, a slide rail is arranged on the top of the crossbeam, and sliding members are arranged on both sides of the bipolar plate assembly and both sides of the movable end plate, and the sliding members are adapted to the slide rail.

[0010] According to the portable disassembly and assembly mechanism of the electrolytic cell provided by the present invention, a plurality of the first flexible components are provided, each of the first flexible components comprises a first oil cylinder, a first adapter and a first flexible connector, a first end of the first flexible connector is hinged to a driving rod of the first oil cylinder through the first adapter, and a second end of the first flexible connector is connected to an outer edge of the bipolar plate assembly; A plurality of the second flexible components are provided, each of which comprises a second oil cylinder, a second adapter and a second flexible connector, a first end of the second flexible connector is hinged to a driving rod of the second oil cylinder through the second adapter, and a second end of the second flexible connector is connected to an outer edge of the bipolar plate assembly; The first oil cylinder and the second oil cylinder are both connected to the oil tank through pipelines, and the first oil cylinder and the second oil cylinder are both electrically connected to the controller.

[0011] According to the portable disassembly and assembly mechanism of the electrolytic cell provided by the present invention, a plurality of connection structures are evenly distributed around the bipolar plate assembly, and the connection structures are connected to the second end of the first flexible connector or the second flexible connector.

[0012] According to the portable disassembly and assembly mechanism of the electrolytic cell provided by the present invention, the bipolar plate assembly includes a frame, an anode gasket, a cathode gasket, an anode electrode, a cathode bottom mesh, a cathode electrode and an elastic mesh, the connecting structure is arranged on the frame, the anode gasket and the cathode gasket are respectively connected to the two sides of the frame, a diaphragm is arranged between the anode electrode and the cathode electrode of the adjacent bipolar plate assembly, the diaphragm is installed in the anode gasket, the cathode bottom mesh is connected to the rib plate of the frame, and an elastic mesh is arranged between the cathode electrode and the cathode bottom mesh.

[0013] According to the portable disassembly and assembly mechanism of the electrolytic cell provided by the present invention, when the first oil cylinder pulls the bipolar plate assembly, the calculation formula of the displacement value L1 of the driving rod of the first oil cylinder is: L1=N1*b+L2-(S1 2 -(H2-H1) 2 ) 1 / 2 ; When the second oil cylinder pulls the bipolar plate assembly, the calculation formula of the displacement value L3 of the driving rod of the second oil cylinder is: L3=N3*b+L4-(S2 2 -(H4-H3) 2 ) 1 / 2 ; Wherein, L2 is the distance between the end surface of the first oil cylinder and the inner side of the fixed end plate; S1 is the sum of the lengths of the first adapter and the first flexible connector; L4 is the distance between the end surface of the second oil cylinder and the inner side of the movable end plate; S2 is the sum of the lengths of the second adapter and the second flexible connector; H1 is the height value of the connection between the connection structure of the adjacent bipolar plate assembly on the side of the faulty bipolar plate assembly facing the fixed end plate and the first flexible connector; H2 is the height of the center axis of the driving rod of the first oil cylinder; H3 is the height value of the connection between the connection structure of the adjacent bipolar plate assembly on the side of the faulty bipolar plate assembly facing the movable end plate and the second flexible connector; H4 is the height of the center axis of the driving rod of the first oil cylinder; N1 is the number of bipolar plate assemblies between the faulty bipolar plate assembly and the fixed end plate; N2 is the number of bipolar plate assemblies between the faulty bipolar plate assembly and the active end plate; β1 is the angle between the first flexible connector and the horizontal direction; β2 is the angle between the second flexible connector and the horizontal direction; b is the thickness of a single bipolar plate assembly.

[0014] According to the portable disassembly and assembly mechanism of the electrolytic cell provided by the present invention, the first oil cylinder maintains the minimum pulling force required for the multiple bipolar plate assemblies between the faulty bipolar plate assembly and the fixed end plate to continue to be in a compressed state: F1=(F 垫片 +F 弹性网 -μ*N1Mg) / (cosβ1-μ*N1*(H2-H1) / S1); The minimum pulling force required by the second oil cylinder to keep the multiple bipolar plate assemblies between the faulty bipolar plate assembly and the movable end plate in a compressed state is: F2=(F 垫片 +F 弹性网 +μ*N2Mg) / (cosβ2+μ*N2*(H4-H3) / S2); Among them, F 垫片 It is the elastic force generated by the anode gasket and the cathode gasket recovering after being squeezed; F 弹性网 It is the elastic force generated by the elastic net recovering after deformation; μ is the friction coefficient between the slide rail and the bipolar plate assembly; S1 is the sum of the lengths of the first adapter and the first flexible connector; S2 is the sum of the lengths of the second adapter and the second flexible connector; H1 is the height value of the connection between the connection structure of the adjacent bipolar plate assembly on the side of the faulty bipolar plate assembly facing the fixed end plate and the first flexible connector; H2 is the height of the center axis of the driving rod of the first oil cylinder; H3 is the height value of the connection between the connection structure of the adjacent bipolar plate assembly on the side of the faulty bipolar plate assembly facing the movable end plate and the second flexible connector; H4 is the height of the center axis of the driving rod of the first oil cylinder; N1 is the number of bipolar plate assemblies between the faulty bipolar plate assembly and the fixed end plate; N2 is the number of bipolar plate assemblies between the faulty bipolar plate assembly and the active end plate; M is the weight of a single bipolar plate assembly; g is the acceleration due to gravity.

[0015] According to the portable disassembly and assembly mechanism of the electrolytic cell provided by the present invention, the inner sides of the first fixed end plate and the movable end plate are sequentially provided with an insulating plate and an end plate, and a plurality of the bipolar plate assemblies are arranged between a pair of the end plates.

[0016] The present invention provides a portable disassembly and assembly mechanism for an electrolytic cell, comprising: a hydraulic press, a plurality of bipolar plate assemblies and a tension compensation device. During the electrolysis process, close contact between the bipolar plate assemblies is the key to ensuring efficient current transmission and smooth electrolysis reaction. The present invention provides a tension compensation device and uses it in conjunction with a movable end plate of the hydraulic press. When removing a faulty bipolar plate assembly, a balanced tension can be applied to a plurality of bipolar plate assemblies that are not faulty, so as to compensate for the pressure reduced due to the movement of the movable end plate. This ensures that the remaining parts of the electrolytic cell can remain in a stable compression state during maintenance, avoiding performance degradation or safety hazards caused by uneven pressure. Since the tension compensation device can maintain the stability of the internal pressure of the electrolytic cell, additional wear on the bipolar plate assembly and other components of the electrolytic cell due to pressure fluctuations is avoided, thereby improving the reliability and stability of the equipment and helping to extend the service life of the entire electrolytic cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of a portable disassembly and assembly mechanism for an electrolytic cell provided in an embodiment of the present invention.

[0019] Figure 2 It is a structural schematic diagram of a first flexible traction component provided in an embodiment of the present invention.

[0020] Figure 3 It is a cross-sectional view of two adjacent bipolar plate assemblies provided by an embodiment of the present invention before being pressed.

[0021] Figure 4 It is a cross-sectional view of two adjacent bipolar plate assemblies after being compressed according to an embodiment of the present invention.

[0022] Figure 5 It is a schematic diagram of various parameters of the tension compensation device provided by an embodiment of the present invention when it is working.

[0023] Reference numerals: 1. First fixed end plate; 2. Movable end plate; 3. Bipolar plate assembly; 31. Frame; 32. Anode gasket; 33. Cathode gasket; 34. Anode electrode; 35. Cathode bottom net; 36. Cathode electrode; 37. Elastic net; 38. Diaphragm; 4. First flexible traction component; 41. First oil cylinder; 42. First adapter; 43. First flexible connector; 5. Second flexible traction assembly; 51. Second oil cylinder; 52. Second adapter; 53. Second flexible connector; 6. Second fixed end plate; 7. Crossbeam; 8. Main oil cylinder; 9. Control station; 10. Slide rail; 11. Connection structure; 12. Lifting eye. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Combine the following Figure 1-Figure 5 The invention describes a portable disassembly and assembly mechanism for an electrolytic cell.

[0026] An embodiment of the present invention provides a portable disassembly and assembly mechanism for an electrolytic cell, comprising: a hydraulic press, a plurality of bipolar plate assemblies 3 and a tension compensation device.

[0027] Among them, the hydraulic press is provided with a first fixed end plate 1 and a movable end plate 2, and multiple bipolar plate assemblies 3 are arranged between the first fixed end plate 1 and the movable end plate 2. The movable end plate 2 can approach the first fixed end plate 1 along a first direction to squeeze the multiple bipolar plate assemblies 3 to put them in a compressed state.

[0028] The tension compensation device includes a first flexible traction component 4 and a second flexible traction component 5. The first flexible traction component 4 is arranged on the first fixed end plate 1, and the second flexible traction component 5 is arranged on the movable end plate 2. The first flexible traction component 4 and / or the second flexible traction component 5 can apply a balanced tension to the bipolar plate assembly 3, and is used to compensate for the pressure of multiple bipolar plate assemblies 3 that are not faulty when the movable end plate 2 moves away from the first fixed end plate 1 along the first direction to remove the faulty bipolar plate assembly 3, so that the multiple bipolar plate assemblies 3 that are not faulty are subjected to the same pressure under the action of the compensation pressure as those in the compressed state.

[0029] It can be seen from the above scheme that since the close contact between the bipolar plate assemblies 3 is the key to ensuring efficient current transmission and smooth electrolysis reaction during the electrolysis process, the present invention sets a tension compensation device and uses it in conjunction with the movable end plate 2 of the hydraulic press. When removing the faulty bipolar plate assembly 3, a balanced tension can be applied to multiple bipolar plate assemblies 3 that are not faulty to compensate for the pressure reduced due to the movement of the movable end plate 2. This ensures that the remaining parts in the electrolytic cell can still maintain a stable compression state during the maintenance process, avoiding performance degradation or safety hazards caused by uneven pressure. Since the tension compensation device can maintain the stability of the internal pressure of the electrolytic cell, additional wear on the bipolar plate assembly 3 and other components of the electrolytic cell due to pressure fluctuations is avoided, thereby improving the reliability and stability of the equipment and helping to extend the service life of the entire electrolytic cell.

[0030] Due to the portable design, the first flexible traction component 4 of the tension compensation device is set on the first fixed end plate 1, and the second flexible traction component 5 is set on the movable end plate 2, which makes the installation and disassembly of the bipolar plate assembly 3 more convenient and quick, reduces the operating difficulty, and also reduces the need for professional tools.

[0031] In this embodiment, a second fixed end plate 6 is further included, on which a main oil cylinder 8 is disposed, and a driving rod of the main oil cylinder 8 is connected to the movable end plate 2. Figure 1 As shown, the movable end plate 2 is arranged between the first fixed end plate 1 and the second fixed end plate 6, and the main oil cylinder 8 is used to drive the movable end plate 2 to move along the first direction, so that the movable end plate 2 can be close to the first fixed end plate 1 to achieve the extrusion of multiple bipolar plate assemblies 3, or the main oil cylinder 8 drives the movable end plate 2 away from the first fixed end plate 1 to implement the removal of the faulty bipolar plate assembly 3; a cross beam 7 is arranged between the second fixed end plate 6 and the first fixed end plate 1, and the movable end plate 2 and the bipolar plate assembly 3 are both slidably connected to the cross beam 7 along the first direction.

[0032] In some embodiments, a slide rail 10 is provided on the top of the beam 7, and the material of the slide rail 10 is preferably but not limited to low-friction materials such as polytetrafluoroethylene or PP; sliding parts are provided on both sides of the bipolar plate assembly 3 and both sides of the movable end plate 2, and the sliding parts are adapted to the slide rail 10, and the sliding parts can be rollers or sliders.

[0033] In this embodiment, insulating plates and end plates are sequentially arranged on the inner sides of the first fixed end plate 1 and the movable end plate 2, a plurality of bipolar plate assemblies 3 are arranged between a pair of end plates, the insulating plates and the end plates are also slidably connected to the slide rails 10, and the first fixed end plate 1 and the second fixed end plate 6 are also provided with lifting ears 12, which facilitates lifting the entirety for position movement by lifting equipment.

[0034] like Figure 1As shown, this embodiment further includes a control station 9, which includes an oil tank and a controller. The master oil cylinder 8 is connected to the oil tank through a pipeline, and the master oil cylinder 8 is electrically connected to the controller.

[0035] In some specific embodiments, Figure 2 As shown, a plurality of first flexible components are provided, each of which includes a first oil cylinder 41, a first adapter 42 and a first flexible connector 43, the first end of the first flexible connector 43 is hinged to the driving rod of the first oil cylinder 41 through the first adapter 42, and the second end of the first flexible connector 43 is connected to the outer edge of the bipolar plate assembly 3; a plurality of second flexible components are provided, each of which includes a second oil cylinder 51, a second adapter 52 and a second flexible connector 53, the first end of the second flexible connector 53 is hinged to the driving rod of the second oil cylinder 51 through the second adapter 52, and the second end of the second flexible connector 53 is connected to the outer edge of the bipolar plate assembly 3; the first oil cylinder 41 and the second oil cylinder 51 are both connected to the oil tank through pipelines, and the first oil cylinder 41 and the second oil cylinder 51 are both electrically connected to the controller.

[0036] With this arrangement, the first cylinder 41, the second cylinder 51 and the main cylinder 8 share one oil tank, and the operation of the three cylinders is controlled separately by the controller, so that the three cylinders share one control system and oil tank, which can simplify the overall structure, reduce the overall structure volume, and reduce costs.

[0037] like Figure 1-Figure 2 As shown, four first flexible components are provided, wherein two first oil cylinders 41 are spaced apart at the top ends of the first fixed end plate 1, and the other two first oil cylinders 41 are provided on both sides of the first fixed end plate 1. The first flexible member adopts a chain, which has good flexibility and strength and can adapt to different tension requirements. One end of the first adapter 42 is connected to the chain, and the other end is hinged to the driving rod of the first oil cylinder 41, ensuring that the bipolar plate assembly 3 can maintain balanced tension during the tightening and loosening process.

[0038] For example, a vertical strip groove is axially opened at the end of the driving rod of the first oil cylinder 41, and the first adapter 42 is a strip-shaped adjusting plate. One end of the adjusting plate is inserted into the strip groove and a pin shaft or a connecting bolt passes through the adjusting plate and both sides of the strip groove, so as to realize the hinge connection between the adjusting plate and the driving rod of the first oil cylinder 41, so that the adjusting plate can swing up and down in the strip groove; the other end of the adjusting plate can be conveniently connected to the chain through a butterfly buckle; four second flexible components are arranged, of which two second oil cylinders 51 are arranged at intervals at the top ends of the movable end plate 2, and the other two second oil cylinders 51 are arranged on both sides of the movable end plate 2, and the structures of the second adapter 52 and the second flexible connector 53 are the same as those of the above-mentioned first adapter 42 and the first flexible connector 43, and are not repeated here.

[0039] In this embodiment, a plurality of connection structures 11 are evenly distributed around the bipolar plate assembly 3, the number of the connection structures 11 is the same as that of the first flexible connector 43 or the second flexible connector 53, and the positions correspond one to one, and the connection structure 11 is connected to the second end of the first flexible connector 43 or the second flexible connector 53; Figure 1 As shown, the connection structure 11 can be a hanging ring, and the chain end is detachably connected to the hanging ring through a butterfly buckle.

[0040] In some specific embodiments, Figure 3-Figure 4 As shown, the bipolar plate assembly 3 includes a frame 31, an anode gasket 32, a cathode gasket 33, an anode electrode 34, a cathode bottom mesh 35, a cathode electrode 36 and an elastic mesh 37, the connection structure 11 is arranged on the frame 31, the anode gasket 32 ​​and the cathode gasket 33 are respectively connected to the two sides of the frame 31, a diaphragm 38 is arranged between the anode electrode 34 and the cathode electrode 36 of the adjacent bipolar plate assembly 3, the diaphragm 38 is installed in the anode gasket 32, the cathode bottom mesh 35 is connected to the rib plate of the frame 31, and an elastic mesh 37 is arranged between the cathode electrode 36 and the cathode bottom mesh 35, and the elastic mesh 37 can be Providing pressure to ensure good contact between the cathode electrode 36 and the diaphragm 38 helps to ensure uniform distribution of reaction media such as hydrogen, oxygen or electrolyte between the cathode and the diaphragm 38. The bipolar plate assembly 3 is arranged on the crossbeam 7 of the extruder. After extrusion, the cathode side and the anode side of two adjacent bipolar plate assemblies 3 are tightly fitted, and the cathode gasket 33 and the anode gasket 32 ​​are compressed to the set value. The diaphragm 38 is clamped between the cathode electrode 36 and the anode electrode 34, and the zero-pole distance design between the cathode electrode 36, the anode electrode 34 and the diaphragm 38 is maintained by the elastic compensation method of the elastic net 37.

[0041] In this embodiment, when the first oil cylinder 41 pulls the bipolar plate assembly 3, the calculation formula of the displacement value L1 of the driving rod of the first oil cylinder 41 is: L1=N1*b+L2-(S1 2 -(H2-H1) 2 ) 1 / 2 .

[0042] When the second oil cylinder 51 pulls the bipolar plate assembly 3, the calculation formula of the displacement value L3 of the driving rod of the second oil cylinder 51 is: L3=N3*b+L4-(S2 2 -(H4-H3) 2 ) 1 / 2 .

[0043] Wherein, L2 is the distance between the end surface of the first oil cylinder 41 and the inner side of the fixed end plate; S1 is the sum of the lengths of the first adapter 42 and the first flexible connector 43; L4 is the distance between the end surface of the second oil cylinder 51 and the inner side of the movable end plate 2; S2 is the sum of the lengths of the second adapter 52 and the second flexible connector 53; H1 is the height value of the connection between the connection structure 11 of the adjacent bipolar plate assembly 3 on the side of the faulty bipolar plate assembly 3 facing the fixed end plate and the first flexible connector 43; H2 is the height of the center axis of the driving rod of the first oil cylinder 41; H3 is the height value of the connection between the connection structure 11 of the bipolar plate assembly 3 adjacent to the side of the faulty bipolar plate assembly 3 facing the movable end plate 2 and the second flexible connector 53; H4 is the height of the center axis of the driving rod of the first oil cylinder 41; N1 is the number of bipolar plate assemblies 3 between the faulty bipolar plate assembly 3 and the fixed end plate; N2 is the number of bipolar plate assemblies 3 between the faulty bipolar plate assembly 3 and the active end plate 2; β1 is the angle between the first flexible connector 43 and the horizontal direction; β2 is the angle between the second flexible connector 53 and the horizontal direction; b is the thickness of a single bipolar plate assembly 3 .

[0044] It should be noted that, it is known that S1 and H2-H1 are fixed values, S2 and H4-H3 are fixed values, and β1 and β2 can be calculated according to the cosine formula.

[0045] like Figure 5 As shown, in the above calculation formula, except for L1 and L3, only the specific values ​​of N1 and N2 need to be known, and the values ​​represented by other letters are fixed values. By substituting N1 and N2 into the corresponding formulas respectively, the displacement value of the driving rod of the first cylinder 41 when the first cylinder 41 pulls the bipolar plate assembly 3 and the displacement value of the driving rod of the second cylinder 51 when the second cylinder 51 pulls the bipolar plate assembly 3 can be calculated.

[0046] When the faulty bipolar plate assembly 3 needs to be removed, the movable end plate 2 starts to move away from the first fixed end plate 1 under the action of the main cylinder 8. During this process, the tension compensation device needs to continue to keep the multiple bipolar plate assemblies 3 that have not failed in a compressed state, so the driving rods of the first cylinder 41 and / or the second cylinder 51 need to retract to pull their respective flexible connectors. Therefore, the driving rods of the first cylinder 41 and / or the second cylinder 51 will have a certain displacement relative to the initial state; for example, when the position of the faulty bipolar plate assembly 3 is the starting end corresponding to the first fixed end plate 1, that is, Figure 5 In this case, only the second oil cylinder 51 starts to work, and the first oil cylinder 41 does not work; or, when the position of the faulty bipolar plate assembly 3 is at the starting end of the corresponding active end plate 2, that is, Figure 5The first bipolar plate assembly 3 at the rightmost end, in this case, only the first oil cylinder 41 starts working, and the second oil cylinder 51 does not work; or, when the position of the faulty bipolar plate assembly 3 is any position between the two ends, in this case, the first oil cylinder 41 and the second oil cylinder 51 need to work at the same time to move the remaining bipolar plate assemblies 3 on both sides of the faulty bipolar plate assembly 3 to its two sides respectively, so as to vacate the position of the faulty bipolar plate assembly 3 and remove it.

[0047] In this embodiment, the minimum pulling force required by the first oil cylinder 41 to keep the multiple bipolar plate assemblies 3 between the faulty bipolar plate assembly 3 and the fixed end plate in a compressed state is: F1=F 垫片 +F 弹性网 -μ*N1Mg / cosβ1-μ*N1*H2-H1 / S1.

[0048] The minimum tension required by the second oil cylinder 51 to keep the multiple bipolar plate assemblies 3 between the faulty bipolar plate assembly 3 and the movable end plate 2 in a compressed state is: F2=F 垫片 +F 弹性网 +μ*N2Mg / cosβ2+μ*N2*H4-H3 / S2.

[0049] Among them, F 垫片 The elastic force generated by the anode gasket 32 ​​and the cathode gasket 33 recovering after being squeezed; F 弹性网 The elastic force generated by the elastic net 37 after deformation and recovery; μ is the friction coefficient between the slide rail 10 and the bipolar plate assembly 3; S1 is the sum of the lengths of the first adapter 42 and the first flexible connector 43; S2 is the sum of the lengths of the second adapter 52 and the second flexible connector 53; H1 is the height value of the connection between the connection structure 11 of the adjacent bipolar plate assembly 3 on the side of the faulty bipolar plate assembly 3 facing the fixed end plate and the first flexible connector 43; H2 is the height of the center axis of the driving rod of the first oil cylinder 41; H3 is the height value of the connection between the connection structure 11 of the bipolar plate assembly 3 adjacent to the side of the faulty bipolar plate assembly 3 facing the movable end plate 2 and the second flexible connector 53; H4 is the height of the center axis of the driving rod of the first oil cylinder 41; N1 is the number of bipolar plate assemblies 3 between the faulty bipolar plate assembly 3 and the fixed end plate; N2 is the number of bipolar plate assemblies 3 between the faulty bipolar plate assembly 3 and the active end plate 2; M is the weight of a single bipolar plate assembly 3; g is the gravitational acceleration.

[0050] like Figure 5 As shown, it should be noted that, in the above calculation formula, except for F1 and F2, only the specific values ​​of N1 and N2 need to be known, and the values ​​represented by other letters are all known values. By substituting N1 and N2 into the corresponding formulas respectively, the minimum pulling force required for the first oil cylinder 41 to keep the multiple bipolar plate assemblies 3 between the faulty bipolar plate assembly 3 and the fixed end plate to continue to be in a compressed state, and the minimum pulling force required for the second oil cylinder 51 to keep the multiple bipolar plate assemblies 3 between the faulty bipolar plate assembly 3 and the movable end plate 2 to continue to be in a compressed state can be calculated.

[0051] In this embodiment, when the background detects that the electrolytic cell has a fault, a shutdown strategy is adopted. After the location of the faulty bipolar plate assembly 3 is determined, the worker locks the butterfly buckle at the end of the chain at the lifting rings of the bipolar plate assemblies 3 on both sides of the faulty bipolar plate assembly 3, and sets the tension of the first oil cylinder 41 and / or the second oil cylinder 51 according to the force calculation formula. In the process of loosening the main oil cylinder 8, the first oil cylinder 41 and / or the second oil cylinder 51 is kept to compensate to the set tension in real time to ensure that the tension at the four points of the bipolar plate assembly 3 is consistent, so that when the faulty bipolar plate assembly 3 is replaced, the remaining bipolar plate assemblies 3 are not affected, reducing the impact of replacing the bipolar plate assembly 3 on the life of the cell body, while reducing the risk of manual operation, it can also reduce the irreversible damage to the gasket caused by repeated squeezing, thereby increasing the service life of the cell body.

[0052] The portable disassembly and assembly mechanism of an electrolytic cell provided by the present invention, compared with the prior art, can replace a faulty bipolar plate assembly 3 without affecting other bipolar plate assemblies 3 that do not need to be replaced; the tension supplement device can automatically adjust the pulling angle, and after calculating and presetting the cylinder pressure and displacement parameters of the first oil cylinder 41 and the second oil cylinder 51, it will automatically compensate the cylinder pressure and adjust the tension after releasing the main oil cylinder 8, to ensure that the bipolar plate assemblies 3 that do not need to be replaced will not be affected, thereby greatly increasing the service life of the cell body; the only manual operations that can be performed are the installation of chains and lifting rings and the lifting of faulty bipolar plate assemblies 3, which can greatly ensure the safety of operators and shorten the replacement time; and the three oil cylinders share a set of oil cylinder control station 9, which can greatly save costs.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A portable disassembly and assembly mechanism for an electrolytic cell, characterized in that: include: A hydraulic press, comprising a first fixed end plate (1) and a movable end plate (2); A plurality of bipolar plate assemblies (3) are provided, wherein the plurality of bipolar plate assemblies (3) are provided between the first fixed end plate (1) and the movable end plate (2), and the movable end plate (2) is capable of approaching the first fixed end plate (1) along a first direction to squeeze the plurality of bipolar plate assemblies (3) into a compressed state; The tension compensation device comprises a first flexible traction component (4) and a second flexible traction component (5), wherein the first flexible traction component (4) is arranged on the first fixed end plate (1), and the second flexible traction component (5) is arranged on the movable end plate (2), and the first flexible traction component (4) and / or the second flexible traction component (5) can apply a balanced tension to the bipolar plate assembly (3), so as to compensate pressure on a plurality of bipolar plate assemblies (3) that are not in a faulty state when the movable end plate (2) moves away from the first fixed end plate (1) in a first direction to remove a faulty bipolar plate assembly (3), so that the plurality of bipolar plate assemblies (3) that are not in a faulty state are subjected to the same pressure under the action of the compensation pressure as those in the compressed state.

2. The portable disassembly and assembly mechanism of the electrolytic cell according to claim 1, characterized in that: The invention also comprises a second fixed end plate (6), on which a main oil cylinder (8) is arranged, and a driving rod of the main oil cylinder (8) is connected to the movable end plate (2); a crossbeam (7) is arranged between the second fixed end plate (6) and the first fixed end plate (1), and the movable end plate (2) and the bipolar plate assembly (3) are both slidably connected to the crossbeam (7) along a first direction.

3. The portable disassembly and assembly mechanism of the electrolytic cell according to claim 2, characterized in that: It also includes a control station (9), the control station (9) including an oil tank and a controller, the master oil cylinder (8) being connected to the oil tank via a pipeline, and the master oil cylinder (8) being electrically connected to the controller.

4. The portable disassembly and assembly mechanism of the electrolytic cell according to claim 2, characterized in that: A slide rail (10) is provided on the top of the crossbeam (7), and sliding members are provided on both sides of the bipolar plate assembly (3) and both sides of the movable end plate (2), and the sliding members are adapted to the slide rail (10).

5. The portable disassembly and assembly mechanism of the electrolytic cell according to claim 3, characterized in that: A plurality of the first flexible components are provided, each of the first flexible components comprising a first oil cylinder (41), a first adapter (42) and a first flexible connector (43), a first end of the first flexible connector (43) being hinged to a driving rod of the first oil cylinder (41) via the first adapter (42), and a second end of the first flexible connector (43) being connected to an outer edge of the bipolar plate assembly (3); A plurality of the second flexible components are provided, each of the second flexible components comprises a second oil cylinder (51), a second adapter (52) and a second flexible connector (53), a first end of the second flexible connector (53) being hinged to a driving rod of the second oil cylinder (51) via the second adapter (52), and a second end of the second flexible connector (53) being connected to an outer edge of the bipolar plate assembly (3); The first oil cylinder (41) and the second oil cylinder (51) are both connected to the oil tank via pipelines, and the first oil cylinder (41) and the second oil cylinder (51) are both electrically connected to the controller.

6. The portable disassembly and assembly mechanism of the electrolytic cell according to claim 5, characterized in that: A plurality of connection structures (11) are evenly distributed around the bipolar plate assembly (3); the number of the connection structures (11) is the same as that of the first flexible connector (43) or the second flexible connector (53), and the positions thereof correspond one to one; and the connection structures (11) are detachably connected to the second end of the first flexible connector (43) or the second flexible connector (53).

7. The portable disassembly and assembly mechanism of the electrolytic cell according to claim 6, characterized in that: The bipolar plate assembly (3) comprises a frame (31), an anode gasket (32), a cathode gasket (33), an anode electrode (34), a cathode bottom mesh (35), a cathode electrode (36) and an elastic mesh (37); the connection structure (11) is arranged on the frame (31); the anode gasket (32) and the cathode gasket (33) are respectively connected to two sides of the frame (31); a diaphragm (38) is arranged between the anode electrode (34) and the cathode electrode (36) of the adjacent bipolar plate assembly (3); the diaphragm (38) is installed in the anode gasket (32); the cathode bottom mesh (35) is connected to the rib plate of the frame (31); and an elastic mesh (37) is arranged between the cathode electrode (36) and the cathode bottom mesh (35).

8. The portable disassembly and assembly mechanism of the electrolytic cell according to claim 5, characterized in that: When the first oil cylinder (41) pulls the bipolar plate assembly (3), the calculation formula for the displacement value L1 of the driving rod of the first oil cylinder (41) is: L1=(N1-1 / 2)*b+L2-(S1 2 -(H2-H1) 2 ) 1 / 2 ; When the second oil cylinder (51) pulls the bipolar plate assembly (3), the calculation formula for the displacement value L3 of the driving rod of the second oil cylinder (51) is: L3=(N3-1 / 2)*b+L4-(S2 2 -(H4-H3) 2 ) 1 / 2 ; Wherein, L2 is the distance between the end surface of the first oil cylinder (41) and the inner side of the fixed end plate; S1 is the sum of the lengths of the first adapter (42) and the first flexible connector (43); L4 is the distance between the end surface of the second oil cylinder (51) and the inner side of the movable end plate (2); S2 is the sum of the lengths of the second adapter (52) and the second flexible connector (53); H1 is the height value of the connection point between the connection structure (11) of the adjacent bipolar plate assembly (3) on the side of the faulty bipolar plate assembly (3) facing the fixed end plate and the first flexible connector (43); H2 is the height of the center axis of the driving rod of the first oil cylinder (41); H3 is the height value of the connection point between the connection structure (11) of the adjacent bipolar plate assembly (3) on the side of the faulty bipolar plate assembly (3) facing the movable end plate (2) and the second flexible connector (53); H4 is the height of the center axis of the driving rod of the first oil cylinder (41); N1 is the number of bipolar plate assemblies (3) between the faulty bipolar plate assembly (3) and the fixed end plate; N2 is the number of bipolar plate assemblies (3) between the faulty bipolar plate assembly (3) and the movable end plate (2); β1 is the angle between the first flexible connecting member (43) and the horizontal direction; β2 is the angle between the second flexible connecting member (53) and the horizontal direction; b is the thickness of a single bipolar plate assembly (3).

9. The portable disassembly and assembly mechanism of the electrolytic cell according to claim 7, characterized in that: The minimum pulling force required by the first oil cylinder (41) to keep the multiple bipolar plate assemblies (3) between the faulty bipolar plate assembly (3) and the fixed end plate in a compressed state is: F1=(F 垫片 +F 弹性网 -μ*N1Mg) / (cosβ1-μ*N1*(H2-H1) / S1); The minimum pulling force required by the second oil cylinder (51) to keep the multiple bipolar plate assemblies (3) between the faulty bipolar plate assembly (3) and the movable end plate (2) in a compressed state is: F2=(F 垫片 +F 弹性网 +μ*N2Mg) / (cosβ2+μ*N2*(H4-H3) / S2); Among them, F 垫片 The elastic force generated by the anode gasket (32) and the cathode gasket (33) recovering after being squeezed; F 弹性网 The elastic force generated by the elastic net (37) recovering after deformation; μ is the friction coefficient between the slide rail (10) and the bipolar plate assembly (3); β1 is the angle between the first flexible connecting member (43) and the horizontal direction; β2 is the angle between the second flexible connecting member (53) and the horizontal direction; S1 is the sum of the lengths of the first adapter (42) and the first flexible connector (43); S2 is the sum of the lengths of the second adapter (52) and the second flexible connector (53); H1 is the height value of the connection point between the connection structure (11) of the adjacent bipolar plate assembly (3) on the side of the faulty bipolar plate assembly (3) facing the fixed end plate and the first flexible connector (43); H2 is the height of the center axis of the driving rod of the first oil cylinder (41); H3 is the height value of the connection point between the connection structure (11) of the adjacent bipolar plate assembly (3) on the side of the faulty bipolar plate assembly (3) facing the movable end plate (2) and the second flexible connector (53); H4 is the height of the center axis of the driving rod of the first oil cylinder (41); N1 is the number of bipolar plate assemblies (3) between the faulty bipolar plate assembly (3) and the fixed end plate; N2 is the number of bipolar plate assemblies (3) between the faulty bipolar plate assembly (3) and the movable end plate (2); M is the weight of a single bipolar plate assembly (3); g is the acceleration due to gravity.

10. The portable disassembly and assembly mechanism of the electrolytic cell according to claim 1, characterized in that: An insulating plate and an end plate are sequentially arranged on the inner sides of the first fixed end plate (1) and the movable end plate (2), and a plurality of bipolar plate assemblies (3) are arranged between a pair of the end plates.

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