Alkali liquor electrolytic bath for producing hydrogen by electrolyzing water

Abstract

The invention belongs to the technical field of alkali liquor hydrogen production through electrolysis, particularly relates to an alkali liquor electrolytic bath for hydrogen production through electrolysis of water, and aims at solving the problem that in the prior art, when alkali liquor hydrogen production is carried out, electrification of a pole piece in each electrolysis chamber is arranged in a pole piece, and electrification of a single electrolysis chamber in the electrolysis process is abnormal. The main frame comprises a first end pressing plate and a second end pressing plate which are identical in appearance structure and symmetrical to each other, and a first annular protruding edge and a second annular protruding edge which are identical in diameter and thickness are reserved on the opposite sides of the first end pressing plate and the second end pressing plate respectively. Three aligning penetrating rods distributed in a central symmetry mode are fixed to the side, close to the first end pressing plate, of the second annular protruding edge. According to the device, electrolysis interruption caused by corrosion of an internal capillary circuit due to long-term electrolysis of a traditional embedded circuit can be prevented, and the circuit of each electrolysis unit is independently exposed to be electrified, so that circuit detection and maintenance can be performed more easily.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen production by electrolysis of alkaline solution, and in particular to an alkaline solution electrolytic cell for hydrogen production by electrolysis of water. Background Art

[0002] The mainstream high-pressure alkaline solution electrolyzer on the market is a bipolar filter press structure, and its core component, the bipolar plate, is welded by the main pole plate and the pole frame. The pole frame is outside the main pole plate, and two groups of gas-liquid channel holes are arranged on the upper part of the pole frame, corresponding to the oxygen-alkali mixture and hydrogen-alkali mixture generated by electrolysis. The lower part of the pole frame is provided with an alkaline solution through hole. The two adjacent bipolar plates clamp the cathode electrode, diaphragm, and anode electrode in the main pole plate area in a top-to-top manner, and a sealing gasket is placed between the pole frame areas. The outermost side of the pole frame is a serrated sealing line area, and the rest is the overlapping area of ​​the diaphragm and the sealing gasket. The fluid flow channels of the mainstream high-pressure alkaline solution electrolyzer on the market are all opened on the pole frame.

[0003] However, the electrolysis unit composed of such electrode plates and their matching plates has the following shortcomings, that is, there is no separate power-on unit for the power-on of the electrode plates, but the connecting unit is embedded in the inside of the electrode plates. After long-term use, once the electrode plates are corroded or worn, the voltage in the area, i.e., the small electrolysis chamber, will be unstable, which will cause the voltage difference to be different from the designed voltage, thereby affecting the gas output. Therefore, we propose a power-on unit independent of the electrode plates to ensure that the voltage in the small electrolysis chamber in each electrolysis unit is stable and the same, so as to ensure constant output during the electrolysis process. Summary of the invention

[0004] In view of the technical problem in the prior art that the electrode in each electrolysis chamber is energized by being arranged inside the electrode when producing hydrogen from alkaline solution, which may easily lead to abnormal energization of a single electrolysis chamber during the electrolysis process, the present invention adopts the following technical solution: A water electrolysis hydrogen production alkaline liquid electrolyzer comprises a main frame, wherein the main frame comprises two end pressure plates 1 and 2 which have the same external structure and are symmetrical to each other, and an annular convex ridge 1 and an annular convex ridge 2 having the same diameter and thickness are reserved on opposite sides of the end pressure plate 1 and the end pressure plate 2, respectively, and three alignment through rods which are centrally symmetrically distributed are fixed on the side of the annular convex ridge 2 close to the end pressure plate 1, and the two connected alignment through rods are parallel to each other and extend horizontally, and the surface of the annular convex ridge 1 is provided with anti-twist sliding holes which are sleeved with the alignment through rods, and after the sleeve connection, the surfaces of the end pressure plate 1 and the end pressure plate 2 are parallel to each other and perpendicular to the alignment through rods; a plurality of groups of electrolysis units which are tightly fitted together are arranged between the end pressure plate 1 and the end pressure plate 2, and each electrolysis unit is slidably sleeved on the three Align the through rod; metal electrical contact pieces with different electrodes are respectively extended from the front and rear sides of each group of the electrolytic units; and symmetrical protrusions are reserved in the middle of the front and rear sides of the end pressure plate 1 and the end pressure plate 2, and two groups of symmetrical power connection mechanisms are arranged between the four protrusions; a strip slot is opened on the side of the protrusion block away from the overall center position, and a columnar sink groove which is interconnected with the strip slot is opened on the top of the protrusion block, and the same support plate is inserted between the two strip slots on the same side of the end pressure plate 1 and the end pressure plate 2, and a tough pressure plate 1 is arranged on the upper surface of the support plate, and a copper bar is fixedly embedded between the lower surface of the tough pressure plate 1 and the upper surface of the support plate, and all the metal electrical contact pieces located on the same side are located between the copper bar and the support plate.

[0005] A further configuration is that mutually symmetrical cylindrical cap heads are reserved at both ends of the tough pressure plate, and the two cylindrical cap heads are slidably connected in the corresponding two cylindrical grooves respectively; a spring groove is opened at the top of the cylindrical cap head, and a clamping spring is fixed at the bottom of the spring groove, and an end block is fixed at the top of the clamping spring; a self-locking screw hole is opened on the upper surface of the protruding block near the spring groove, and a fastening clamp with an opening downward and an overall U-shaped structure is provided above the self-locking screw hole, and the fastening clamp is fixed in the self-locking screw hole by bolts. Through the setting of the fastening clamp, while the bolt is screwed to fix the fastening clamp, the cylindrical cap head with the clamping spring is also pressed down, and then the metal electrical contact piece fixed between the copper bar and the support plate bar is clamped and fixed.

[0006] A further configuration is that the tough pressure plate 1 is a curved structure with both ends raised, and a plurality of auxiliary screw holes distributed alternately are provided in the middle of the tough pressure plate 1. If poor electrical contact occurs in the middle during installation, screws can be used to reinforce it in the auxiliary screw holes.

[0007] A further configuration is that a soft wire is fixed to the same end of the two copper bars, and a wiring frame compatible with the soft wire is fixed to the surface of the raised blocks on the front and rear sides of the second end pressure plate; a return spring is fixed to the end of the metal electrical contact piece close to the electrolytic unit, and the end of the return spring away from the metal electrical contact piece is sleeved with a metal rod with an insulating sleeve, and the other end of the metal rod with the insulating sleeve is sealed and inserted into the interior of the electrolytic unit; by setting the metal electrical contact piece with a return spring, a certain bending space can be present when it is clamped, and the position shaking of the electrolytic unit will not be affected.

[0008] A further configuration is that the circumferential outer walls of the end pressure plate 1 and the end pressure plate 2 are each provided with two symmetrical supporting feet between the two protruding blocks, and the two supporting feet have the same shape and correspond to each other, so as to support and fix the device.

[0009] A further configuration is that a plurality of tension screws symmetrically distributed in a central manner are inserted between the circumferential outer walls of the end pressure plate 1 and the end pressure plate 2, and a screw hole 1 matching the diameter of the tension screw is opened on the surface of the end pressure plate 1 near the circumferential edge, and a screw hole 2 corresponding to the screw hole 1 is opened on the surface of the end pressure plate 2 near the circumferential edge; both ends of the tension screw are located on the opposite sides of the main frame and are screwed with top nuts, and the middle part of the tension screw is located between the end pressure plate 1 and the end pressure plate 2 and is fixedly sleeved with an insulating sleeve; it reinforces the main frame.

[0010] A further configuration is that a barrier gasket is fixed between two adjacent electrolytic units, and the disk surface of the barrier gasket is provided with two symmetrical air passages near the top, and the disk surface of the barrier gasket is provided with three positioning holes matched with the cross-sectional dimensions of the alignment through rod near the circumferential edge; the disk surface of the barrier gasket is provided with symmetrical liquid passage holes on the front and rear sides near the lower half.

[0011] A further configuration is that the electrolytic unit includes a pole frame 1 and a pole frame 2 which are in an overall annular structure and have the same inner and outer diameters and thicknesses. A clamping diaphragm ring is arranged between the pole frame 1 and the pole frame 2 and is in close contact with the surfaces of the two. An annular groove is provided on the circumferential inner wall of the clamping diaphragm ring, and a diaphragm is clamped in the annular groove. In this embodiment, PPS diaphragms and polytetrafluoroethylene resin modified asbestos diaphragms are applicable. An annular clamping groove is provided on the opposite side of the pole frame 1 and the pole frame 2 near the inner edge of the circumference, and support nets are embedded in the two annular clamping grooves, and a tightening steel for fixing the support net is also clamped in the annular clamping groove. The pole frame 1 and the pole frame 2 are provided with symmetrical liquid inlet and outlet positions 1 and 2 near the inner edge of the circumference on the opposite sides thereof; and the middle of the two liquid inlet and outlet positions 2 is connected with the corresponding liquid through hole, and the liquid inlet and outlet position 1 and the liquid inlet and outlet position 2 in the same electrolytic unit are connected with each other; thereby ensuring that the electrolyte can reach the inside of the pole frame 1 and the pole frame 2; the surfaces of the pole frame 1, the pole frame 2 and the clamping-shaped diaphragm ring are provided with through holes coaxially aligned with the airway near the top, and the inner wall of the circumference on the side of the pole frame 1 away from the clamping-shaped diaphragm ring is provided with a connecting groove connected with one of the through holes The first opening is provided, and the inner wall of the circumference of the pole frame 2 on one side away from the clamping diaphragm ring is provided with a connecting slot 2 connected to another through hole; that is, after power is turned on, the generated hydrogen and oxygen can be discharged from the two through holes respectively; the surface of the end pressure plate 1 is provided with a gas outlet hole 1 and a gas outlet hole 2 coaxial with the gas channel near the top, and the side of the end pressure plate 1 away from the end pressure plate 2 is respectively connected with a hydrogen outlet pipe 2 and an oxygen outlet pipe 1 connected to the gas outlet hole 1 and the gas outlet hole 2; the two sides of the diaphragm are respectively provided with a positive electrode net and a negative electrode net, and the opposite sides of the positive electrode net and the negative electrode net are respectively located at the front and rear ends of the device A folded metal connecting piece is fixed, and an electric sheet gap is opened near the circumferential edge on the opposite side of the pole frame 1 and the pole frame 2, and a wire hole connected to the outside is opened at the bottom of the groove of the electric sheet gap. The two wire holes are horizontally arranged and pass through the center line of the pole frame 1. The two electric sheet gaps in the same electrolytic unit are arranged one after the other, and the corresponding folded metal connecting piece is electrically connected to the end of the metal rod with an insulating sleeve extending therein; thereby, when in use, the small chambers on both sides of the diaphragm can form different electrodes, the anode produces oxygen, and the cathode produces hydrogen, which are first collected from the corresponding connecting notches at the top and then discharged from the through hole.

[0012] A further configuration is that the surface of the support mesh is formed by stamping and punching, and each punching position is provided with staggered protrusions, which tightly abut the energized positive electrode mesh, which not only makes the electrolysis reaction more uniform, but also prevents friction.

[0013] A further configuration is that the end pressure plate 1 is provided with an expansion groove 1 on the circumferential inner wall of the annular convex ridge 1, close to the rear side and obliquely below, and the bottom of the expansion groove 1 is provided with a folded liquid through hole connected to the outside world; the position of the expansion groove 1 is connected to one of the liquid inlet and outlet positions 1; the end pressure plate 2 is provided with an expansion groove 2 corresponding to one of the liquid inlet and outlet positions 2 on the circumferential inner wall of the annular convex ridge 2, and the bottom of the expansion groove 2 is provided with a docking slot hole, and the bottom of the docking slot hole is provided with a folded hole 1 connected to the outside world; the side of the electrolysis unit is provided with an arc hole 1 and an arc hole 2 that are compatible with the alignment through rod; the outlets of the folded liquid through hole and the folded hole 1 are both located on the side of the support foot; and the clamping diaphragm ring is also provided with a sliding hole that is compatible with the alignment through rod.

[0014] The beneficial effects of the present invention are: 1. The exposed metal electrical contact piece and the matching power connection mechanism can prevent the traditional embedded circuit from being corroded by the internal capillary circuit due to long-term electrolysis, which may lead to electrolysis interruption. The device exposes the circuit of each electrolysis unit separately for power connection, which makes it easier to detect and maintain the circuit, thereby improving the safety of the entire electrolysis process and the service life of the device.

[0015] 2. By setting the positioning hole 1, the partition gasket can not only separate the two adjacent electrolytic units to form a separate electrolytic chamber, but also allow the generated gas to pass through the corresponding airways respectively, and the electrolyte can also be circulated in and out from the corresponding liquid through hole.

[0016] 3. By setting the folded liquid through hole and the folded hole 1, the high-voltage circulation of the internal electrolyte can be realized, thereby ensuring that the density of the internal electrolyte is moderately maintained within the set range. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the exploded structure of the power connection mechanism of the present invention; Figure 3 This is a schematic diagram of the installation structure of one group of electrolytic units in the present invention; Figure 4 This is a schematic diagram of the overall assembly structure of one group of electrolytic units in the present invention; Figure 5 It is a schematic diagram of the overall structure of the main frame in the present invention; Figure 6 This is a front view of the middle end pressing plate 1 of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the cross-sectional structure along line AA; Figure 8This is a front view of the middle end pressing plate 2 of the present invention; Fig. 9 For the present invention Figure 8 The schematic diagram of the cross-sectional structure along the BB line; Fig.10 It is a partial cross-sectional structural schematic diagram of the main frame in the present invention; Fig.11 It is a schematic diagram of the exploded structure of all parts of one electrolytic unit of the present invention; Fig.12 It is a schematic diagram of the exploded structure of some components of one electrolytic unit of the present invention; Fig.13 This is a schematic diagram of the installation position structure of the middle group of electrolytic units of the present invention; Fig.14 This is a schematic structural diagram of the other side of the middle group of electrolytic units of the present invention.

[0018] In the figure: 1. End pressure plate 1; 101. Air outlet 1; 102. Air outlet 2; 103. Folding liquid through hole; 104. Annular ridge 1; 105. Screw hole 1; 106. Expansion slot 1; 2. Anti-twist sliding hole; 3. Alignment through rod; 4. Oxygen outlet pipe 1; 5. Hydrogen outlet pipe 2; 6. Pole frame 1; 601. Connecting slot 1; 602. Liquid inlet and outlet position 1; 603. Arc hole 1; 7. Clamping diaphragm ring; 8. Pole frame 2; 801. Connecting slot 2; 802. Liquid inlet and outlet position 2; 803. Arc hole 2; 804. Notch of electric sheet; 9. Spacer gasket; 901. Liquid through hole; 902. Airway; 903. Positioning hole 1 ;10. Tension screw;11. Insulating sleeve;12. Two end pressure plates;1201. One folding hole;1202. Two expansion slots;1203. Butt-jointing slots;1204. Two annular ridges;1205. Two screw holes;13. One tough pressure plate;131. Columnar cap head;14. Fastening clamp;15. Raised block;16. Strip slot;17. Wiring frame;18. Top nut;19. Support strip;20. Metal electrical contact piece;2001. Metal rod with insulating sleeve;21. Copper strip;22. Columnar sink;23. Support net;24. Tightening steel ring;25. Positive net;26. Negative net;27. Diaphragm;28. Folding metal piece. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Reference Figure 1-14, an alkaline liquid electrolyzer for producing hydrogen by electrolysis of water, comprising a main frame, the main frame comprising two end pressure plates 1 and 12 with the same appearance structure and symmetrical to each other, and the opposite sides of the end pressure plate 1 and the end pressure plate 2 are respectively reserved with an annular ridge 104 and an annular ridge 2 1204 with the same diameter and thickness, and the annular ridge 2 1204 is fixed with three alignment rods 3 distributed symmetrically with the center on the side close to the end pressure plate 1, the two connected alignment rods 3 are parallel to each other and extend horizontally, and the surface of the annular ridge 104 is provided with an anti-twist sliding hole 2 for forming a sleeve fit with the alignment rod 3, after the sleeve fit, the surfaces of the end pressure plate 1 and the end pressure plate 2 12 are parallel to each other and perpendicular to the alignment rod 3; a plurality of groups of electrolysis units tightly fitted together are arranged between the end pressure plate 1 and the end pressure plate 2 12, and each electrolysis unit is slidably sleeved on the three alignment rods On the through rod 3; metal electrical contact pieces 20 with different electrodes extend out from the front and rear sides of each group of electrolytic units respectively; and mutually symmetrical protrusions 15 are reserved in the middle of the front and rear sides of the end pressure plate 1 and the end pressure plate 2 12, and two groups of mutually symmetrical power connection mechanisms are arranged between the four protrusions 15; a strip slot 16 is opened on the side of the protrusion block 15 away from the overall center position, and a columnar sink 22 that is mutually interpenetrating with the strip slot 16 is opened on the top of the protrusion block 15, and the same support plate bar 19 is inserted between the two strip slots 16 on the same side of the end pressure plate 1 and the end pressure plate 2 12, and a tough pressure plate 13 is arranged on the upper surface of the support plate bar 19, and a copper bar 21 is fixedly embedded between the lower surface of the tough pressure plate 13 and the upper surface of the support plate bar 19, and all the metal electrical contact pieces 20 located on the same side are located between the copper bar 21 and the support plate bar 19; Specifically, by providing an exposed metal electrical contact sheet 20 and a matching power connection mechanism, it is possible to prevent the traditional embedded circuit from being corroded by the internal capillary circuit due to long-term electrolysis, thereby preventing the electrolysis from being interrupted. The present device exposes the circuit of each electrolysis unit separately for power connection, which makes it easier to perform circuit detection and maintenance, thereby improving the safety of the entire electrolysis process and the service life of the device.

[0021] Please refer to Figure 1-Figure 2 , symmetrical cylindrical cap heads 131 are reserved at both ends of the tough pressure plate 13, and the two cylindrical cap heads 131 are slidably connected in the corresponding two cylindrical recesses 22; the top of the cylindrical cap head 131 is provided with a spring recess, and the bottom of the spring recess is fixed with a tightening spring, and the top of the tightening spring is fixed with an end block; the upper surface of the protruding block 15 is provided with a self-locking screw hole near the spring recess, and the upper part of the self-locking screw hole is provided with a fastening clip 14 with an opening downward and an overall U-shaped structure. The fastening clip 14 is fixed in the self-locking screw hole by bolts. Through the setting of the fastening clip 14, while the fastening clip 14 is fixed by tightening the bolt, the cylindrical cap head 131 with the tightening spring is also pressed down, and then the metal electrical contact sheet 20 fixed between the copper bar 21 and the support plate bar 19 is clamped and fixed.

[0022] In the present invention, the tough pressure plate 13 is a curved structure with both ends upturned, and a plurality of auxiliary screw holes distributed alternately are provided in the middle of the tough pressure plate 13. If the electrical contact in the middle is poor during installation, it can be reinforced by screws in the auxiliary screw holes.

[0023] Reference Figure 1-Figure 2 , a soft wire is fixed to the same end of the two copper bars 21, and a wiring frame 17 compatible with the soft wire is fixed to the surface of the protruding blocks 15 on the front and rear sides of the end pressure plate 12; a return spring is fixed to the end of the metal electrical contact piece 20 close to the electrolytic unit, and the end of the return spring away from the metal electrical contact piece 20 is sleeved with a metal rod 2001 with an insulating sleeve, and the other end of the metal rod 2001 with an insulating sleeve is sealed and inserted into the interior of the electrolytic unit; by setting the metal electrical contact piece 20 with a return spring, a certain bending space can be present when being clamped, and the position shaking of the electrolytic unit will not be affected.

[0024] Reference Figure 1 The circumferential outer walls of the end pressure plate 1 and the end pressure plate 2 12 are located between the two protruding blocks 15 and are provided with two symmetrical supporting feet, and the two supporting feet have the same shape and correspond to each other, so as to support and fix the device.

[0025] Reference Figure 1 , Figure 4-Figure 8 A plurality of tension screws 10 symmetrically distributed in a central manner are inserted between the circumferential outer walls of the end pressure plate 1 and the end pressure plate 2 12, and a screw hole 105 matching the diameter of the tension screw 10 is opened on the surface of the end pressure plate 1 near the circumferential edge, and a screw hole 1205 corresponding to the screw hole 105 is opened on the surface of the end pressure plate 2 12 near the circumferential edge; both ends of the tension screw 10 are located on the opposite sides of the main frame and are screwed with top nuts 18, and the middle part of the tension screw 10 is located between the end pressure plate 1 and the end pressure plate 2 12 and is fixedly sleeved with an insulating sleeve 11; it reinforces the main frame.

[0026] Reference Figure 3-Figure 4 A barrier gasket 9 is fixed between two adjacent electrolytic units, and two mutually symmetrical air passages 902 are opened near the top of the disc surface of the barrier gasket 9, and three positioning holes 903 matching the cross-sectional dimensions of the alignment through rod 3 are opened near the circumferential edge of the disc surface of the barrier gasket 9; and mutually symmetrical liquid passage holes 901 are opened on the front and rear sides of the disc surface of the barrier gasket 9 near the lower half; Specifically, by setting the positioning hole 903, the partition gasket 9 can not only separate the two adjacent electrolytic units to form a separate electrolytic chamber, but also allow the generated gas to pass through the corresponding air channel 902 respectively, and the electrolyte can also be circulated in and out from the corresponding liquid through hole 901.

[0027] Reference Figure 4 , Figure 11-Figure 14The electrolysis unit includes a pole frame 1 6 and a pole frame 2 8 which are in an overall circular ring structure and have the same inner and outer diameters and thicknesses. A clamping-shaped diaphragm ring 7 which is closely fitted to the surfaces of the pole frame 1 6 and the pole frame 2 8 is arranged between the pole frame 1 6 and the pole frame 2 8. The inner wall of the circumference of the clamping-shaped diaphragm ring 7 is provided with an annular groove, and a diaphragm 27 is clamped in the annular groove. In this embodiment, a PPS diaphragm and a polytetrafluoroethylene resin modified asbestos diaphragm are applicable; an annular clamping groove is provided on the opposite side of the pole frame 1 6 and the pole frame 2 8 near the inner edge of the circumference, and a support net 23 is embedded in the two annular clamping grooves, and a tightening steel ring 24 for fixing the support net 23 is also clamped in the annular clamping groove; the opposite side of the pole frame 1 6 and the pole frame 2 8 is near the circumference. The inner edge of the circumference is respectively provided with a liquid inlet and outlet position 1 602 and a liquid inlet and outlet position 2 802 which are symmetrical to each other; and the middle of the two liquid inlet and outlet positions 2 802 is connected with the corresponding liquid through hole 901, and the liquid inlet and outlet position 1 602 and the liquid inlet and outlet position 2 802 in the same electrolytic unit are connected with each other; thereby ensuring that the electrolyte can reach the inside of the pole frame 1 6 and the pole frame 2 8; the surfaces of the pole frame 1 6, the pole frame 2 8 and the clamping diaphragm ring 7 are respectively provided with through holes which are coaxial and aligned with the airway 902 near the top, and the inner wall of the circumference of the pole frame 1 6 away from the clamping diaphragm ring 7 is provided with a connecting notch 1 601 which is connected with one of the through holes, and the pole frame 2 8 away from the clamping A connecting notch 801 connected to another through hole is formed on the inner wall of the circumference of one side of the diaphragm ring 7; that is, after power is turned on, the generated hydrogen and oxygen can be discharged from the two through holes respectively; the surface of the end pressure plate 1 is provided with an outlet hole 101 and an outlet hole 102 coaxial with the gas channel 902 near the top, and the side of the end pressure plate 1 away from the end pressure plate 2 12 is respectively connected with a hydrogen outlet pipe 25 and an oxygen outlet pipe 4 connected to the outlet hole 101 and the outlet hole 102; the two sides of the diaphragm 27 are respectively provided with a positive electrode net 25 and a negative electrode net 26, and the opposite sides of the positive electrode net 25 and the negative electrode net 26 are respectively located at the front and rear ends of the device and fixed respectively. There is a folded metal tab 28, and an electrode notch 804 is opened near the circumferential edge on the opposite side of the pole frame 1 6 and the pole frame 2 8, and a wire hole connected to the outside is opened at the bottom of the groove of the electrode notch 804, and the two wire holes are arranged horizontally and pass through the center line of the pole frame 1 6. The two electrode notches 804 in the same electrolytic unit are arranged one after the other, and the corresponding folded metal tab 28 is electrically connected to the end of the metal rod 2001 with an insulating sleeve that extends in; thereby, the small chambers on both sides of the diaphragm 27 can form different electrodes when in use, the anode produces oxygen, and the cathode produces hydrogen, which are first collected from the corresponding connecting notches at the top and then discharged from the through hole.

[0028] Reference Figure 4 The surface of the support mesh 23 is formed by stamping and punching, and each punching position is provided with staggered protrusions, which tightly abut the energized positive electrode mesh 25, which not only makes the electrolysis reaction more uniform, but also prevents friction.

[0029] Reference Figure 4-Figure 14 The end pressure plate 1 is located on the inner wall of the circumference of the annular convex ridge 104, and is provided with an expansion groove 106 at the lower side of the rear side. The bottom of the expansion groove 106 is provided with a folded liquid through hole 103 connected to the outside. The position of the expansion groove 106 is connected to one of the liquid inlet and outlet positions 602. The end pressure plate 2 12 is located on the inner wall of the circumference of the annular convex ridge 1204, and is provided with an expansion groove 1202 corresponding to one of the liquid inlet and outlet positions 802. The bottom of the expansion groove 1202 is provided with a docking slot 1203, and the docking slot 1203 The bottom of the groove is provided with a folded hole 1201 connected to the outside world; the side of the electrolytic unit is provided with an arc hole 603 and an arc hole 803 adapted to the alignment through rod 3; the outlets of the folded liquid through hole 103 and the folded hole 1201 are both located on the side of the support foot; the clamping diaphragm ring 7 is also provided with a sliding hole adapted to the alignment through rod 3; by providing the folded liquid through hole 103 and the folded hole 1201, a high-voltage circulation of the internal electrolyte can be achieved, thereby ensuring that the density of the internal electrolyte is moderately maintained within the set range. Before using the device, the electrolytic unit is first sleeved on the three aligned through rods 3 on the side of the end pressure plate 12, and then the spacer gasket 9 is sleeved, and then the electrolytic unit is sleeved, and this step is followed until the end pressure plate 1 on the machine is finally sleeved, and the spacer gasket 9 is not placed between the last electrolytic unit and the end pressure plate 1, and finally all the electrolytic units are fixed with the tension screw 10 and the top nut 18; then the electrolyte is circulated from the outlet of the folded hole 1201 or the outlet of the folded liquid through hole 103 until the inside is full; then the power connection mechanism is installed, and when installing the power connection mechanism, first insert the support strip 19 from the side between the two strip slots 16, and then all the metal electrical contact sheets 20 are placed on the upper surface of the support strip 19, and finally the tough pressure plate 13 with the copper strip 21 is fixedly pressed on the metal electrical contact sheet 20, and the soft wire at its end is fixed to the corresponding wiring frame 17; then the corresponding gas can be collected by powering on.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An alkaline liquid electrolytic cell for producing hydrogen by electrolysis of water, comprising a main frame, wherein the main frame comprises two end pressure plates (1) and (12) with the same external structure and symmetry, and the end pressure plates (1) and (12) are opposite to each other and are respectively provided with an annular convex ridge (104) and an annular convex ridge (1204) with the same diameter and thickness, wherein: Three alignment through rods (3) symmetrically distributed in the center are fixed to the side of the annular convex ridge (1204) close to the end pressure plate (1), and the surface of the annular convex ridge (104) is provided with anti-twist sliding holes (2) that are sleeved with the alignment through rods (3); multiple groups of electrolytic units that are tightly fitted together are arranged between the end pressure plate (1) and the end pressure plate (12), and each electrolytic unit is slidably sleeved on the three alignment through rods (3); metal electrical contact sheets (20) with different electrodes are respectively extended from the front and rear sides of each group of electrolytic units; and mutually symmetrical protrusions (15) are reserved in the middle of the front and rear sides of the end pressure plate (1) and the end pressure plate (12), and a protrusion (15) is arranged between the four protrusions (15). There are two groups of symmetrical power connection mechanisms; the protruding block (15) is provided with a strip slot (16) on one side away from the overall center position, and the top of the protruding block (15) is provided with a columnar sink groove (22) that interpenetrates with the strip slot (16); the same support plate (19) is inserted between the two strip slots (16) on the same side of the end pressure plate 1 (1) and the end pressure plate 2 (12); the upper surface of the support plate (19) is provided with a tough pressure plate 1 (13); a copper strip (21) is fixedly embedded between the lower surface of the tough pressure plate 1 (13) and the upper surface of the support plate (19); and all metal electrical contact sheets (20) located on the same side are located between the copper strip (21) and the support plate (19).

2. A water electrolysis hydrogen production alkaline solution electrolyzer according to claim 1, characterized in that: The two ends of the tough pressure plate (13) are respectively reserved with symmetrical cylindrical cap heads (131), and the two cylindrical cap heads (131) are respectively slidably connected in the corresponding two cylindrical recesses (22); the top of the cylindrical cap heads (131) is provided with a spring recess, and the bottom of the spring recess is fixed with a clamping spring, and the top of the clamping spring is fixed with an end block; the upper surface of the protruding block (15) is provided with a self-locking screw hole near the spring recess, and a fastening clamp (14) with an opening facing downward and an overall U-shaped structure is provided above the self-locking screw hole, and the fastening clamp (14) is fixed in the self-locking screw hole by a bolt.

3. A water electrolysis hydrogen production alkaline solution electrolyzer according to claim 2, characterized in that: The tough pressure plate 1 (13) is a curved structure with two ends tilted upward, and a plurality of auxiliary screw holes distributed alternately are arranged in the middle of the tough pressure plate 1 (13).

4. A water electrolysis hydrogen production alkaline solution electrolyzer according to claim 3, characterized in that: A soft wire is fixed to the same end of the two copper bars (21), and a wiring frame (17) compatible with the soft wire is fixed to the surface of the protruding blocks (15) on both the front and rear sides of the second end pressure plate (12); a return spring is fixed to the end of the metal electrical contact sheet (20) close to the electrolysis unit, and a metal rod (2001) with an insulating sleeve is sleeved on the end of the return spring away from the metal electrical contact sheet (20); the other end of the metal rod (2001) with the insulating sleeve is sealed and inserted into the interior of the electrolysis unit.

5. The alkaline solution electrolyzer for producing hydrogen by electrolysis of water according to claim 1, characterized in that: The circumferential outer walls of the end pressure plate 1 (1) and the end pressure plate 2 (12) are each provided with two mutually symmetrical supporting feet located between the two protruding blocks (15), and the two supporting feet have the same shape and correspond to each other.

6. The alkaline solution electrolytic cell for producing hydrogen by electrolysis of water according to claim 1, characterized in that: A plurality of tensioning screws (10) are inserted between the circumferential outer walls of the end pressure plate 1 (1) and the end pressure plate 2 (12) and are symmetrically distributed in the center, and a screw hole 1 (105) matching the diameter of the tensioning screw (10) is opened near the circumferential edge on the surface of the end pressure plate 1 (1), and a screw hole 2 (1205) corresponding to the screw hole 1 (105) is opened near the circumferential edge on the surface of the end pressure plate 2 (12); both ends of the tensioning screw (10) are located on both sides of the main frame opposite to each other and are screwed with top nuts (18), and the middle part of the tensioning screw (10) is located between the end pressure plate 1 (1) and the end pressure plate 2 (12) and is fixedly sleeved with an insulating sleeve (11).

7. The alkaline solution electrolytic cell for producing hydrogen by electrolysis of water according to claim 5, characterized in that: A barrier gasket (9) is fixed between two adjacent electrolytic units, and the disc surface of the barrier gasket (9) is provided with two mutually symmetrical air passages (902) near the top, and the disc surface of the barrier gasket (9) is provided with three positioning holes (903) matching the cross-sectional dimensions of the alignment through rod (3) near the circumferential edge; and the disc surface of the barrier gasket (9) is provided with mutually symmetrical liquid passage holes (901) at the front and rear sides near the lower half.

8. The alkaline solution electrolytic cell for producing hydrogen by electrolysis of water according to claim 7, characterized in that: The electrolytic unit comprises a first pole frame (6) and a second pole frame (8) which are in an overall annular structure and have the same inner and outer diameters and thicknesses. A clamping diaphragm ring (7) is arranged between the first pole frame (6) and the second pole frame (8) and is closely fitted to the surfaces of the two pole frames. The inner wall of the circumference of the clamping diaphragm ring (7) is provided with an annular groove, and a diaphragm (27) is clamped in the annular groove. In this embodiment, a PPS diaphragm and a polytetrafluoroethylene resin modified asbestos diaphragm are applicable. An annular clamping groove is arranged on the opposite side of the first pole frame (6) and the second pole frame (8) near the inner edge of the circumference, and a support net (23) is embedded in the two annular clamping grooves, and a support net (23) is also clamped in the annular clamping groove. ) is abutted against a steel ring (24); the pole frame 1 (6) and the pole frame 2 (8) are respectively provided with a symmetrical liquid inlet and outlet position 1 (602) and a liquid inlet and outlet position 2 (802) near the inner edge of the circumference on the opposite sides; and the middle of the two liquid inlet and outlet positions 2 (802) is connected to the corresponding liquid through hole (901), and the liquid inlet and outlet position 1 (602) and the liquid inlet and outlet position 2 (802) in the same electrolytic unit are connected to each other; the surfaces of the pole frame 1 (6), the pole frame 2 (8) and the clamping diaphragm ring (7) are respectively provided with through holes coaxially aligned with the airway (902) near the top, and the pole frame 1 (6) is away from the clamping diaphragm ring (7) on one side. A connecting notch (601) is formed on the inner wall of the side circumference and is connected to one of the through holes; a connecting notch (801) is formed on the inner wall of the side circumference of the pole frame (8) away from the clamping diaphragm ring (7) and is connected to the other through hole; a gas outlet hole (101) and a gas outlet hole (102) coaxial with the gas channel (902) are formed on the surface of the end pressure plate (1) near the top, and a hydrogen outlet pipe (5) and an oxygen outlet pipe (4) connected to the gas outlet hole (101) and the gas outlet hole (102) are respectively inserted on the side of the end pressure plate (1) away from the end pressure plate (12); and two sides of the diaphragm (27) are respectively provided with A positive electrode net (25) and a negative electrode net (26), and the opposite sides of the positive electrode net (25) and the negative electrode net (26) are respectively located at the front and rear ends of the device and are respectively fixed with folded metal connecting pieces (28), and the opposite sides of the pole frame (6) and the pole frame (8) are both provided with electric sheet notches (804) near the circumferential edge, and the groove bottoms of the electric sheet notches (804) are both provided with wire holes connected to the outside, and the two wire holes are both arranged horizontally and pass through the center line of the pole frame (6), and the two electric sheet notches (804) in the same electrolytic unit are arranged one in front of the other, and the corresponding folded metal connecting pieces (28) are electrically connected to the end of the metal rod (2001) with an insulating sleeve extending therein.

9. The alkaline solution electrolytic cell for producing hydrogen by electrolysis of water according to claim 8, characterized in that: The surface of the support net (23) is formed by punching and cutting, and each punching position is provided with staggered protrusions, which tightly abut against the positive electrode net (25) that is energized.

10. An alkaline solution electrolyzer for producing hydrogen by electrolysis of water according to any one of claims 8-9, characterized in that: The end pressure plate 1 (1) is provided with an expansion groove 1 (106) on the inner wall of the circumference of the annular convex ridge 1 (104) near the rear side and obliquely below, and the bottom of the expansion groove 1 (106) is provided with a folded liquid through hole (103) connected to the outside; the position of the expansion groove 1 (106) is connected to one of the liquid inlet and outlet positions 1 (602); the end pressure plate 2 (12) is provided with an expansion groove 2 (1202) corresponding to one of the liquid inlet and outlet positions 2 (802) on the inner wall of the circumference of the annular convex ridge 2 (1204), The bottom of the expanded groove (1202) is provided with a docking groove hole (1203), and the bottom of the docking groove hole (1203) is provided with a folded hole (1201) communicating with the outside world; the side of the electrolysis unit is provided with an arc-shaped hole (603) and an arc-shaped hole (803) adapted to the alignment penetration rod (3); the outlets of the folded liquid through hole (103) and the folded hole (1201) are both located on the side of the support foot; and the clamping diaphragm ring (7) is also provided with a sliding hole adapted to the alignment penetration rod (3).

Images