Alkali supplementing device for hydrogen production through alkaline water electrolysis

Abstract

The utility model provides an alkali supplementing device for hydrogen production through alkaline water electrolysis, and belongs to the technical field of hydrogen production through alkaline water electrolysis. The alkali supplementing device for hydrogen production through alkaline water electrolysis comprises an electrolysis box and a secondary alkali supplementing mechanism, a controller is installed on the front side of the electrolysis box, an alkali supplementing box is installed on the right side of the electrolysis box, a liquid storage barrel is fixedly connected to the right side of the top of the alkali supplementing box, a closing plate is installed on the top of the liquid storage barrel, and a lifting disc is movably connected to the top in the alkali supplementing box. By arranging the secondary alkali supplementing mechanism, when the alkali supplementing box is matched with the electrolysis box to work, the stored alkali liquor in the alkali supplementing box can be supplied and buffered, the situation that more alkali liquor in the alkali supplementing box is discharged at a time is avoided, and the service life of the alkali supplementing box is prolonged. Therefore, the alkali supplementing convenience and the operation stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen production by alkaline water electrolysis, and in particular to an alkali replenishing device for hydrogen production by alkaline water electrolysis. Background Art

[0002] Alkaline water electrolysis is a common hydrogen production method, in which an alkaline solution is used as an electrolyte. Alkaline water electrolysis is a method of producing hydrogen by electrolyzing water. It uses an alkaline electrolyte, such as potassium hydroxide or sodium hydroxide, as a conductive medium, and decomposes water into hydrogen and oxygen during the electrolysis process. During the electrolysis process, the positive electrode absorbs electrons and undergoes an oxidation reaction to produce oxygen; the negative electrode releases electrons and undergoes a reduction reaction to produce pure hydrogen. In this process, the alkali replenishment device is used to maintain the alkalinity level of the electrolyte to ensure the continuation of the electrolysis process. Since the timeliness of alkali replenishment directly affects the electrolysis alkali replenishment effect, it is necessary to perform alkali replenishment maintenance operations.

[0003] In the related art, during the use of the alkali replenishment device, the pH value is usually used as an indicator to measure the acidity and alkalinity of the electrolyte.

[0004] When the value drops, the water pump is started to pump the alkali solution into the electrolytic cell for alkali replenishment, so that it can be used.

[0005] However, during the current use of the alkali replenishing device, since the alkali solution is stored and supplied through the alkali replenishing tank during the alkali replenishing process, when the single suction discharge volume of the alkali solution is large, the staff is required to add alkali solution to the alkali replenishing tank in time, otherwise the alkali replenishment may not be carried out, resulting in a shorter liquid transfer period during the alkali replenishing process, which affects the convenience of replenishing the alkali solution and the stability of operation. Utility Model Content

[0006] In order to make up for the above deficiencies, the utility model provides an alkali replenishing device for producing hydrogen by electrolysis of alkaline water, which overcomes the above technical problems or at least partially solves the above problems.

[0007] The utility model is achieved in this way:

[0008] The utility model provides an alkali replenishing device for producing hydrogen by electrolysis of alkaline water, comprising an electrolytic box, a controller is installed on the front side of the electrolytic box, and an alkali replenishing box is installed on the right side of the electrolytic box;

[0009] Secondary alkali replenishment mechanism; the secondary alkali replenishment mechanism comprises:

[0010] Liquid storage cylinder; the liquid storage cylinder is fixedly connected to the right side of the top of the alkali replenishing tank, and a closing plate is installed on the top of the liquid storage cylinder;

[0011] A lifting plate; the lifting plate is movably connected to the top of the alkali replenishing tank, and the top of the lifting plate is fixedly connected to a sealing plate located inside the liquid storage cylinder;

[0012] Liquid rod; the liquid rod is fixedly connected to the inside of the lifting plate, and a floating ball located inside the alkali replenishing tank is installed at the bottom of the liquid rod;

[0013] Contact fine-tuning mechanism; the contact temperature adjustment mechanism is arranged at the bottom inside the liquid rod.

[0014] In a preferred embodiment, the contact fine-tuning mechanism includes a screw groove, a screw rod and an adjusting disk. The screw groove is opened at the bottom of the liquid rod, the screw rod is threadedly connected to the inside of the screw groove, the adjusting disk is fixedly connected to the bottom of the screw rod, and the bottom of the adjusting disk is fixedly connected to the top of the float.

[0015] In a preferred embodiment, a groove is provided at the top of the inner wall of the screw groove, a turntable is movably connected to the top of the groove, a tension spring is provided inside the groove, one end of the tension spring is fixedly connected to the top of the screw rod, and the other end of the tension spring is fixedly connected to the bottom of the turntable.

[0016] In a preferred solution, a rotating groove is provided at the top of the inner wall of the drawing groove, a rotating seat is rotatably connected inside the rotating groove, and the bottom of the rotating seat is fixedly connected to the top of the turntable.

[0017] In a preferred solution, a stabilizing rod is fixedly connected to the bottom of the inner wall of the liquid storage cylinder, a stabilizing hole is opened on the top of the stabilizing rod, and the liquid rod passes through the stabilizing rod through the stabilizing hole.

[0018] In a preferred solution, a limit plate is provided on the top of the stabilizing rod, and the bottom of the limit plate is fixedly connected to the top of the liquid rod.

[0019] In a preferred solution, a liquid level sensor is fixedly connected to the left side of the top of the stabilizing bar, a buzzer alarm is installed on the front side of the electrolytic box, and the liquid level sensor and the buzzer alarm are electrically connected to the controller through wires.

[0020] In a preferred solution, a rubber disc is fixedly connected to the bottom of the closing plate, a rubber column located inside the liquid storage cylinder is fixedly connected to the bottom of the rubber disc, and the outer side of the rubber column contacts the inner wall of the liquid storage cylinder.

[0021] The utility model provides an alkali replenishing device for producing hydrogen by electrolysis of alkaline water, and its beneficial effects include:

[0022] 1. By setting up a secondary alkali replenishment mechanism, the reserve alkali solution inside the alkali replenishment box can be supplied and buffered when the alkali replenishment box cooperates with the electrolytic box to avoid a large amount of alkali solution in the alkali replenishment box being discharged at a time, making it difficult for the staff to quickly add the reserve alkali solution, thereby improving the convenience of alkali replenishment and the stability of operation.

[0023] 2. By setting up the contact fine-tuning mechanism, when the liquid rod has a float ball and works with the liquid storage cylinder, it is convenient for the user to adjust the height position of the float ball according to actual use needs, avoiding the situation where the height of the float ball is difficult to adjust adaptively when in use, thereby improving the flexibility of the use of the float ball.

[0024] 3. By setting the groove, turntable and tension spring, when the groove is used with the screw, the friction between the screw and the groove can be increased to the actual elastic tension of the screw, so as to avoid the situation that the rotation of the screw drives the floating ball to rise and fall when the screw is working, thereby improving the working stability of the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is an overall stereogram provided by the embodiment of the utility model;

[0027] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of a closing plate provided in an embodiment of the utility model;

[0028] Figure 3 A schematic diagram of a three-dimensional cross-sectional structure of a liquid storage cylinder provided in an embodiment of the utility model;

[0029] Figure 4 A schematic diagram of a three-dimensional cross-sectional structure of a liquid rod provided in an embodiment of the utility model;

[0030] In the figure: 1. electrolytic box; 2. controller; 3. alkali replenishing box; 4. liquid storage cylinder; 5. closing plate; 6. lifting plate; 7. sealing plate; 8. liquid rod; 9. float; 10. screw groove; 11. screw rod; 12. adjusting plate; 13. pulling groove; 14. rotating plate; 15. tension spring; 16. rotating groove; 17. rotating seat; 18. stabilizing rod; 19. stabilizing hole; 20. limit plate; 21. liquid level sensor; 22. buzzer alarm; 23. rubber plate; 24. rubber column. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1 -

[0033] Figure 4 The utility model provides a technical solution: an alkali replenishing device for producing hydrogen by electrolysis of alkaline water, comprising an electrolytic box 1 and a secondary alkali replenishing mechanism, a controller 2 is installed on the front side of the electrolytic box 1, and an alkali replenishing box 3 is installed on the right side of the electrolytic box 1. When the alkali replenishing box 3 cooperates with the electrolytic box 1 to work, the reserve alkali solution inside the alkali replenishing box 3 can be supplied and buffered, providing more time for staff to add the reserve alkali solution, avoiding the situation where a large amount of alkali solution in the alkali replenishing box 3 is discharged at a single time, making it difficult for staff to quickly add the reserve alkali solution, thereby improving the convenience of alkali replenishment and the stability of operation.

[0034] Reference Figure 1 -

[0035] Figure 4In a preferred embodiment, the secondary alkali replenishment mechanism includes a liquid storage cylinder 4, which is fixedly connected to the right side of the top of the alkali replenishment tank 3, a closing plate 5 is installed on the top of the liquid storage cylinder 4, a lifting plate 6 is movably connected to the top of the inside of the alkali replenishment tank 3, and a sealing plate 7 located inside the liquid storage cylinder 4 is fixedly connected to the top of the lifting plate 6. A liquid rod 8 is fixedly connected to the inside of the lifting plate 6, and a floating ball 9 located inside the alkali replenishment tank 3 is installed at the bottom of the liquid rod 8. The contact temperature adjustment mechanism is arranged at the bottom of the liquid rod 8. When the pH electrode on the left side of the inner wall of the electrolytic box 1 detects the acidity and alkalinity inside the electrolytic box 1, it is transmitted to the controller 2 to start the water pump to suck the alkali solution inside the alkali replenishment tank 3 and transport it to the inside of the electrolytic box 1 for alkali replenishment, the floating ball 9 contacts and monitors the height of the alkali solution inside the alkali replenishment tank 3. When the height of the alkali solution is lower than the height of the floating ball 9, The liquid rod 8 is affected by gravity and drives the lifting plate 6 and the sealing plate 7 to move downward, and the liquid storage cylinder 4 is opened to add the reserve alkali solution into the alkali replenishing tank 3 for secondary alkali replenishing, so that the user can add the reserve alkali solution into the alkali replenishing tank 3 later. The contact fine-tuning mechanism includes a screw groove 10, a screw rod 11 and an adjusting disk 12. The screw groove 10 is opened at the bottom of the liquid rod 8, the screw rod 11 is threadedly connected to the inside of the screw groove 10, the adjusting disk 12 is fixedly connected to the bottom of the screw rod 11, and the bottom of the adjusting disk 12 is fixedly connected to the top of the float 9. When the liquid rod 8 has the float 9 to cooperate with the liquid storage cylinder 4, the user can adjust the height position of the float 9 according to actual use needs to avoid the situation where the height of the float 9 is difficult to adaptably adjust when in use, thereby improving the use flexibility of the float 9.

[0036] Reference Figure 4 In a preferred embodiment, a groove 13 is provided at the top of the inner wall of the screw groove 10, a turntable 14 is movably connected to the top of the groove 13, a tension spring 15 is provided inside the groove 13, one end of the tension spring 15 is fixedly connected to the top of the screw rod 11, and the other end of the tension spring 15 is fixedly connected to the bottom of the turntable 14. When the screw groove 10 is used in conjunction with the screw rod 11, the actual elastic tension of the screw rod 11 can increase the friction between the screw rod 11 and the screw groove 10, so as to prevent the screw 11 from rotating and driving the floating ball when working. 9 is lifted or lowered, thereby improving the working stability of the screw rod 11, a rotating groove 16 is opened at the top of the inner wall of the groove 13, and a rotating seat 17 is rotatably connected inside the rotating groove 16. The bottom of the rotating seat 17 is fixedly connected to the top of the turntable 14, so that when the turntable 14 cooperates with the tension spring 15 to work, the turntable 14 and the groove 13 can be rotatably connected to avoid the turntable 14 from being separated from the groove 13 when working, which makes it difficult for the tension spring 15 to work normally, thereby improving the working stability of the turntable 14 and the tension spring 15.

[0037] Reference Figure 2 -

[0038] Figure 3In a preferred embodiment, a stabilizing rod 18 is fixedly connected to the bottom of the inner wall of the liquid storage cylinder 4, and a stabilizing hole 19 is opened on the top of the stabilizing rod 18. The liquid rod 8 passes through the stabilizing rod 18 through the stabilizing hole 19. When the liquid rod 8 cooperates with the float 9 to work, the liquid rod 8 can be stabilized to avoid shaking and tilting of the liquid rod 8 during operation, thereby improving the working stability of the liquid rod 8. A limiting plate 20 is provided on the top of the stabilizing rod 18, and the bottom of the limiting plate 20 is fixedly connected to the top of the liquid rod 8. When the stabilizing rod 18 cooperates with the liquid rod 8 to work, the liquid rod 8 and the stabilizing rod 18 can be actively limited to avoid the liquid rod 8 from being separated from the stabilizing hole 19 when being raised or lowered, thereby improving the limiting effect between the liquid rod 8 and the stabilizing rod 18.

[0039] Reference Figure 2 -

[0040] Figure 3 In a preferred embodiment, a liquid level sensor 21 is fixedly connected to the left side of the top of the stabilizing rod 18, and a buzzer alarm 22 is installed on the front side of the electrolytic box 1. The liquid level sensor 21 and the buzzer alarm 22 are electrically connected to the controller 2 through a wire. When the liquid storage cylinder 4 cooperates with the alkali replenishing tank 3, the alkali liquid inside the liquid storage cylinder 4 can be monitored, and the monitoring signal can be transmitted to the controller 2 to start the buzzer alarm 22, and the electrical signal can be converted into a sound signal to remind the user to replenish the alkali replenishing tank 3 and the liquid storage cylinder 4. Alkali operation, thereby improving the alkali replenishment reminder effect of the liquid storage cylinder 4, the bottom of the closing plate 5 is fixedly connected with a rubber disk 23, the bottom of the rubber disk 23 is fixedly connected with a rubber column 24 located inside the liquid storage cylinder 4, the outer side of the rubber column 24 is in contact with the inner wall of the liquid storage cylinder 4, when the closing plate 5 cooperates with the liquid storage cylinder 4 to work, the closing plate 5 and the liquid storage cylinder 4 can be closed and sealed, avoiding the situation that it is difficult to effectively close and seal the liquid storage cylinder 4 when the closing plate 5 is used, thereby improving the closing and sealing effect of the closing plate 5 on the liquid storage cylinder 4.

[0041] Specifically, the working process or working principle of the alkali replenishing device for producing hydrogen by electrolysis of alkaline water is as follows: when in use, when the float 9 is installed for the first time, according to the actual component requirements of the height of the alkali solution inside the alkali replenishing tank 3, the hand-held adjustment disk 12 drives the screw 11 to rotate and cooperate with the screw groove 10 to adjust the height of the float 9. In this process, the tension spring 15 follows the screw 11 to drive the turntable 14 to rotate, and applies elastic tension between the screw 11 and the screw groove 10 through the turntable 14, thereby increasing the friction between the screw 11 and the screw groove 10 to ensure that the screw 1 1 After the floating ball 9 is rotated, the rotating seat 17 rotates inside the rotating groove 16 following the rotating disk 14, and the rotating connection work is performed between the rotating disk 14 and the pulling groove 13. At this time, the height of the floating ball 9 is the height for triggering the liquid storage cylinder 4 to perform secondary alkali replenishment on the alkali replenishment tank 3. Subsequently, the reserve alkali solution for secondary alkali replenishment is added to the liquid storage cylinder 4 to prepare for the work of the liquid storage cylinder 4, and the closing plate 5 is held to drive the rubber sheet and the rubber column 24 to close and seal the top of the liquid storage cylinder 4. When the pH electrode on the left side of the inner wall of the electrolytic box 1 detects the internal alkali of the electrolytic box 1, the pH electrode on the left side of the inner wall of the electrolytic box 1 detects the internal alkali of the electrolytic box 1. When the alkalinity of the electrolyte solution is lower than the preset value controlled by the controller 2, it is transmitted to the controller 2 to start the water pump to suck the alkali solution stored in the alkali replenishing tank 3, and transport it to the inside of the electrolytic box 1 to replenish the alkali of the electrolytic box 1. At this time, the float 9 performs contact monitoring on the height of the alkali solution in the alkali replenishing tank 3. When the height of the alkali solution is lower than the height of the float 9, the liquid rod 8 is affected by gravity to drive the lifting plate 6 and the sealing plate 7 to move downward, and the bottom of the liquid storage cylinder 4 is opened to add the reserved alkali solution to the inside of the alkali replenishing tank 3 for secondary alkali replenishment. At this time, the stabilizing rod 18 cooperates with the stabilizing hole 19 The liquid rod 8 is lifted and lowered to stabilize, and the limit plate 20 is used to limit the lifting and lowering of the liquid rod 8. At the same time, the liquid level sensor 21 monitors the alkali solution inside the liquid storage cylinder 4. When the height of the alkali solution inside the liquid storage cylinder 4 is lower than the liquid level sensor 21, the monitoring signal is transmitted to the controller 2. After receiving the signal, the controller 2 starts the buzzer alarm 22, converts the electrical signal into a sound signal, and reminds the user to perform alkali replenishment operations on the alkali replenishment tank 3 and the liquid storage cylinder 4, so that the staff has sufficient time to add the reserve alkali solution.

[0042] It should be noted that the controller 2, liquid level sensor 21 and buzzer alarm 22 are devices or equipment existing in the prior art, or are devices or equipment that can be implemented in the prior art. Their power supply, specific composition and principles are clear to those skilled in the art, so they will not be described in detail.

Claims

1. A alkali replenishing device for producing hydrogen by electrolysis of alkaline water, comprising an electrolytic box (1), a controller (2) being installed on the front side of the electrolytic box (1), and an alkali replenishing box (3) being installed on the right side of the electrolytic box (1), characterized in that ； Secondary alkali replenishment mechanism; the secondary alkali replenishment mechanism comprises: A liquid storage cylinder (4); the liquid storage cylinder (4) is fixedly connected to the right side of the top of the alkali replenishing tank (3), and a closing plate (5) is installed on the top of the liquid storage cylinder (4); A lifting plate (6); the lifting plate (6) is movably connected to the top of the alkali replenishing tank (3), and the top of the lifting plate (6) is fixedly connected to a sealing plate (7) located inside the liquid storage cylinder (4); A liquid rod (8); the liquid rod (8) is fixedly connected to the inside of the lifting plate (6), and a floating ball (9) located inside the alkali replenishing tank (3) is installed at the bottom of the liquid rod (8); The contact fine adjustment mechanism is arranged at the bottom of the liquid rod (8).

2. The alkali replenishing device for producing hydrogen by electrolysis of alkaline water according to claim 1, characterized in that: The contact fine-tuning mechanism comprises a screw groove (10), a screw rod (11) and an adjusting disk (12); the screw groove (10) is opened at the bottom of the liquid rod (8); the screw rod (11) is threadedly connected to the inside of the screw groove (10); the adjusting disk (12) is fixedly connected to the bottom of the screw rod (11); and the bottom of the adjusting disk (12) is fixedly connected to the top of the float (9).

3. The alkali replenishing device for producing hydrogen by electrolysis of alkaline water according to claim 2, characterized in that: A drawing groove (13) is provided at the top of the inner wall of the screw groove (10), and a turntable (14) is movably connected to the top of the drawing groove (13). A tension spring (15) is provided inside the drawing groove (13), and one end of the tension spring (15) is fixedly connected to the top of the screw rod (11), and the other end of the tension spring (15) is fixedly connected to the bottom of the turntable (14).

4. The alkali replenishing device for producing hydrogen by electrolysis of alkaline water according to claim 3, characterized in that: A rotating groove (16) is provided at the top of the inner wall of the pull groove (13), and a rotating seat (17) is rotatably connected inside the rotating groove (16), and the bottom of the rotating seat (17) is fixedly connected to the top of the rotating disk (14).

5. The alkali replenishing device for producing hydrogen by electrolysis of alkaline water according to claim 1, characterized in that: A stabilizing rod (18) is fixedly connected to the bottom of the inner wall of the liquid storage cylinder (4), a stabilizing hole (19) is provided on the top of the stabilizing rod (18), and the liquid rod (8) passes through the stabilizing rod (18) through the stabilizing hole (19).

6. The alkali replenishing device for producing hydrogen by electrolysis of alkaline water according to claim 5, characterized in that: A limiting plate (20) is arranged on the top of the stabilizing rod (18), and the bottom of the limiting plate (20) is fixedly connected to the top of the liquid rod (8).

7. The alkali replenishing device for producing hydrogen by electrolysis of alkaline water according to claim 5, characterized in that: A liquid level sensor (21) is fixedly connected to the left side of the top of the stabilizing rod (18), and a buzzer alarm (22) is installed on the front side of the electrolytic box (1). The liquid level sensor (21) and the buzzer alarm (22) are both electrically connected to the controller (2) through wires.

8. The alkali replenishing device for producing hydrogen by electrolysis of alkaline water according to claim 1, characterized in that: The bottom of the closing plate (5) is fixedly connected to a rubber disk (23), and the bottom of the rubber disk (23) is fixedly connected to a rubber column (24) located inside the liquid storage cylinder (4), and the outer side of the rubber column (24) contacts the inner wall of the liquid storage cylinder (4).

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