Hydrogen production and storage all-in-one machine

Abstract

The invention relates to the technical field of water electrolysis, in particular to a hydrogen production and storage all-in-one machine which is characterized by comprising a storage box body, a U-shaped pipe, a breather pipe, a breather pipe, a gas filling gun, a pressure detector, a first water pump and a controller, the storage box body is used for containing hydrogen; two end opening parts of the U-shaped pipe are upward, and the bottom of the U-shaped pipe is fixed on the outer wall of the upper side of the storage box body; an anode plate and a cathode plate are respectively arranged right below two ports of the U-shaped tube; the anode plate and the cathode plate are fixed with the inner wall of the U-shaped tube; the anode strip is electrically communicated with the positive electrode of the power supply through a wire a; the cathode piece is electrically communicated with the negative electrode of the power supply through a wire b; electrolyzed water is filled in the U-shaped pipe; the technical effects that only hydrogen generated by water electrolysis enters water, and water electrolysis is automatically stopped within a short time after hydrogen is saturated in water are achieved.

Description

Technical Field

[0001] This invention relates to the field of hydrogen production technology, and in particular to an integrated hydrogen production and storage machine. Background Technology

[0002] Hydrogen energy is also a type of new energy. There are various ways to produce hydrogen. Among them, hydrogen production by electrolysis of water is relatively low-cost. Hydrogen and oxygen are obtained by electrolysis of water, and then the hydrogen is stored. Hydrogen production and storage integrated machines can achieve the purpose of hydrogen production and storage. The stored hydrogen can be used to refuel hydrogen fuel cell vehicles, etc.

[0003] In existing technology, hydrogen production equipment electrolyzes water to produce both hydrogen and oxygen. However, even after the hydrogen storage tank is saturated, the water electrolysis equipment continues to electrolyze water to produce hydrogen, which results in the waste of excess hydrogen. Summary of the Invention

[0004] This application provides a hydrogen production and storage integrated machine, which solves the above-mentioned technical problems in the prior art and achieves the technical effect that only the hydrogen generated by water electrolysis enters the tank and the water electrolysis is automatically stopped for a short period of time after the hydrogen in the tank is saturated.

[0005] This application provides a hydrogen production and storage integrated machine, including a storage tank, a U-shaped tube, a gas inlet pipe, a gas filling gun, a pressure detector, and a controller; The storage tank is used to hold hydrogen gas; Both ends of the U-shaped tube face upwards, and the bottom of the U-shaped tube is fixed to the upper outer wall of the storage box; an anode plate and a cathode plate are respectively installed directly below the two ends of the U-shaped tube; the anode plate and the cathode plate are both fixed to the inner wall of the U-shaped tube; The anode plate is electrically connected to the positive terminal of the power supply via wire a; The cathode plate is electrically connected to the negative terminal of the power supply via wire b; The U-shaped tube contains electrolyzed water; One end of the U-shaped tube above the cathode plate is connected to one end of the vent pipe, and the free end of the vent pipe is fixed to the upper end of the storage box and the two are connected to each other. The gas gun is fixedly connected to the outer wall of the storage tank; The pressure detector is fixed to the inner wall of the storage tank; The pressure detector is electrically connected to the controller; Furthermore, the anode and cathode plates are at the same horizontal height.

[0006] Furthermore, it also includes a signal receiving component, a water supply pipe B, a water pump, wire c, and wire d; The U-shaped tube also includes a cylindrical tube, a disc, a piston rod, a second disc, a spring, conductive post A, conductive post B, a limiting block, a guide rod, and a vent hole; One end of the cylindrical tube is fixed to the inner wall of the U-shaped tube, and the cylindrical tube is located directly below the anode plate; One end of the disc is fixed to the free end of the cylindrical tube; the piston rod slides through the disc; the second disc slides through the cylindrical tube, and the piston rod is fixedly connected to the adjacent end of the second disc. The conductive pillar A and conductive pillar B are respectively fixed on the second disk and the adjacent end face of the disk, and the conductive pillar A and conductive pillar B are coaxial; One end of the spring is fixed to the second disk, and the inner wall of the U-shaped tube on the side of the second disk away from the piston rod is fixed to the free end of the spring. The vent hole penetrates one side wall of the U-shaped tube, and the opening of the vent hole on the inner wall of the U-shaped tube points towards the second disk; at least one through hole parallel to its axis is opened on the second disk; When water in the U-tube comes into contact with the anode plate, the water pressure pushes the piston rod to compress the spring, and the conductive posts A and B do not come into contact; when water in the U-tube does not come into contact with the anode plate, the spring force overcomes the water pressure and pushes the piston rod, and the conductive posts A and B come into contact. The signal receiving component includes a fixed plate, a guide rail, electromagnet A, electromagnet B, a pressure detector, and a sliding plate; A horizontal fixed plate is fixed to the storage box; two parallel guide rails are fixed to the upper side of the fixed plate; the sliding plate is slidably mounted on the two guide rails. Electromagnet A and electromagnet B are located on both sides of the sliding plate. The pressure detector and electromagnet B are located on the same side of the sliding plate, and the detection end of the pressure detector is closer to the sliding plate than that of electromagnet B. The conductive post A is electrically connected to the negative terminal of the power supply via wire c, and the conductive post B is electrically connected to the positive terminal of the power supply via wire d. Electromagnet A is electrically connected to the line of conductor a; electromagnet B is electrically connected to the line of conductor c. One end of the water supply pipe B is connected to the inner cavity of the U-shaped pipe, and the other end of the water supply pipe B is connected to a water source; the water pump is installed on the water supply pipe B. The pressure detector is electrically connected to the controller; the water pump is electrically connected to the controller, and the controller will start the water pump to replenish water to the U-shaped pipe after receiving a pressure signal from the pressure detector.

[0007] Furthermore, the controller is a PLC.

[0008] Furthermore, the storage box above the pressure detector has a certain cavity.

[0009] Furthermore, the water pump is a flow pump. Each time the controller receives a pressure signal from the pressure detector, it controls the water pump to replenish the U-shaped pipe with 1 / 3 of the U-shaped pipe's volume of water.

[0010] Furthermore, the water supply pipe B is connected to the bottom of the U-shaped pipe.

[0011] Furthermore, one end of the guide rod is fixed to the second disk, and the other end of the guide rod slides through the U-shaped tube sidewall of the second disk away from the piston rod.

[0012] Furthermore, the limiting block is fixed to the inner wall of the cylindrical tube, and when the end of the second disk away from the piston rod contacts the limiting block, the conductive posts A and B do not contact each other.

[0013] Furthermore, the axes of the cylindrical tube, the disk, the piston rod, and the second disk are all horizontal and collinear.

[0014] One or more technical solutions provided in this application have at least the following technical effects or advantages: Because only hydrogen is produced by the electrolysis of water at the cathode plate, and oxygen (or ozone) is produced by the electrolysis of water at the anode plate, the hydrogen produced by the electrolysis of water at the cathode plate enters the storage tank through the vent pipe. At the same time, the hydrogen produced by the electrolysis of water at the cathode plate is stored in the storage tank. When the storage tank is saturated with hydrogen, the hydrogen produced by the electrolysis of water at the cathode plate continues to enter the vent pipe and the U-shaped tube cavity above the cathode plate for a short period of time. This causes the air pressure in the vent pipe and the U-shaped tube cavity above the cathode plate to gradually increase. The air pressure will push the liquid level at the end of the U-shaped tube near the cathode plate to be lower than that of the cathode plate. As a result, the anode plate and the cathode plate will not electrolyze water. This achieves the technical effect of stopping the electrolysis of water after the hydrogen produced by the electrolysis of water enters the tank and becomes saturated. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application; Figure 2 This is a schematic diagram of the U-shaped tube structure; Figure 3 This is a schematic diagram of the structure of unelectrolyzed water in Embodiment 1 of this application; Figure 4 This is a structural schematic diagram of Embodiment 2 of the application; Figure 5 This is a schematic diagram of the U-shaped tube in Example 2; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 Top view of the signal receiving component; Figure 8 This is a partial circuit diagram from Example 2; In the diagram, the components are: storage box 10; U-shaped tube 20; anode plate 21; cathode plate 22; cylindrical tube 23; disc 24; piston rod 25; second disc 26; spring 27; conductive post A 28; conductive post B 29; limiting block 201; guide rod 202; vent hole 203; vent pipe 30; air gun 40; pressure detector 50; controller 60; signal receiving assembly 70; fixing plate 71; guide rail 72; electromagnet A 73; electromagnet B 74; pressure detector 75; sliding plate 76; water supply pipe 80; water pump 90; wire a01; wire b02; wire c03; wire d04. Detailed Implementation

[0016] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0017] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example 1

[0019] See Figure 1 , Figure 2 , Figure 3 A hydrogen production and storage integrated machine includes a storage tank 10, a U-shaped pipe 20, a vent pipe 30, a gas gun 40, a pressure detector 50, and a controller 60. The storage tank 10 is used to hold hydrogen gas. The storage tank 10 is a solid metal hydrogen storage container made of alloy AB5. The main characteristic of AB5 alloy is its ability to store large amounts of hydrogen gas at relatively low pressures and temperatures. Compared to other hydrogen storage materials, AB5 alloy has a higher hydrogen storage capacity and a faster hydrogen absorption / desorption rate, resulting in high hydrogen storage efficiency. Among them, U-shaped tube 20 is an electrolytic cell; See Figure 2 Both ends of the U-shaped tube 20 face upwards, and the bottom of the U-shaped tube 20 is fixed to the upper outer wall of the storage box 10; an anode plate 21 and a cathode plate 22 are respectively arranged directly below the two ends of the U-shaped tube 20; the anode plate 21 and the cathode plate 22 are both fixed to the inner wall of the U-shaped tube 20. See Figure 8 The anode plate 21 is electrically connected to the positive terminal of the power supply via wire a01; The cathode plate 22 is electrically connected to the negative terminal of the power supply via wire b02; The U-shaped tube 20 contains electrolyzed water; that is, hydrogen gas is generated by electrolysis at the cathode plate 22.

[0020] One port of the U-shaped tube 20 above the cathode plate 22 is connected to one end of the vent pipe 30, and the free end of the vent pipe 30 is fixed to the upper end of the storage box 10 and the two are connected to each other.

[0021] The gas gun 40 is fixedly connected to the outer wall of the storage box 10.

[0022] The pressure detector 50 is fixed to the inner wall of the storage tank 10. The pressure detector 50 is used to detect the pressure value inside the storage tank 10 to prevent the tank from exploding.

[0023] The pressure detector 50 is electrically connected to the controller 60; preferably, the controller 60 is a PLC.

[0024] principle: Since only hydrogen is produced by the electrolysis of water at the cathode plate 22, and oxygen (or ozone) is produced by the electrolysis of water at the anode plate 21, the hydrogen produced by the electrolysis of water at the cathode plate 22 enters the storage tank 10 through the vent pipe 30. At the same time, the hydrogen produced by the electrolysis of water at the cathode plate 22 is stored in the storage tank 10. When the hydrogen in the storage tank 10 is saturated, the hydrogen produced by the electrolysis of water at the cathode plate 22 continues to enter the upper part of the storage tank 10, the vent pipe 30, and the cavity of the U-shaped tube 20 above the cathode plate 22 for a short period of time. This causes the air pressure in the vent pipe 30 and the cavity of the U-shaped tube 20 above the cathode plate 22 to gradually increase. The air pressure will push the liquid level at the end of the U-shaped tube 20 near the cathode plate 22 to be lower than the cathode plate 22, thereby preventing the anode plate 21 and the cathode plate 22 from electrolyzing water. This achieves the technical effect of only the hydrogen produced by the electrolysis of water entering the water and stopping the electrolysis of water after the hydrogen is saturated in the water.

[0025] Hydrogen gas is released from the gas nozzle 40, which can be used to refuel hydrogen-powered vehicles or packaged for sale. When hydrogen gas is released from the gas nozzle 40, the gas pressure in the upper part of the storage tank 10, the vent pipe 30, and the cavity of the U-shaped tube 20 above the cathode plate 22 decreases. As a result, the cathode plate 22 is submerged in water in the U-shaped tube again, and the anode plate 21 and the cathode plate 22 re-electrolyze water, thus ensuring that the hydrogen gas in the storage tank 10 is always saturated.

[0026] Furthermore, the anode plate 21 and the cathode plate 22 are at the same horizontal height.

[0027] Furthermore, the storage box 10 above the pressure detector 50 has a certain cavity. Example 2

[0028] During actual testing, it was found that as the anode plate 21 and cathode plate 22 electrolyze the water in the U-shaped tube 20, the water level in the U-shaped tube 20 gradually decreases. Eventually, the water level at both ends of the tubular water column in the U-shaped tube 20 falls below the height of the anode plate 21 and cathode plate 22. In other words, there is no water to electrically connect the anode plate 21 and cathode plate 22, meaning that the anode plate 21 and cathode plate 22 will not continue to electrolyze water. The following improvements were made.

[0029] The difference between Example 2 and Example 1 is that, It also includes a signal receiving component 70, a water supply pipe 80, a water pump 90, a wire c03, and a wire d04; See Figure 5 , Figure 6 The U-shaped tube 20 also includes a cylindrical tube 23, a disc 24, a piston rod 25, a second disc 26, a spring 27, a conductive post A 28, a conductive post B 29, a limiting block 201, a guide rod 202, and a vent 203. One end of the cylindrical tube 23 is fixed to the inner wall of the U-shaped tube 20, and the cylindrical tube 23 is located directly below the anode plate 21; One end of the disc 24 is fixed to the free end of the cylindrical tube 23; the piston rod 25 slides through the disc 24; the second disc 26 slides through the cylindrical tube 23, and the piston rod 25 is fixedly connected to the adjacent end of the second disc 26. The conductive posts A28 and B29 are fixed on the adjacent end faces of the second disk 26 and disk 24, respectively, and the conductive posts A28 and B29 are coaxial. One end of the spring 27 is fixed to the second disk 26, and the inner wall of the U-shaped tube 20 on the side of the second disk 26 away from the piston rod 25 is fixed to the free end of the spring 27. The vent 203 penetrates one side wall of the U-shaped tube 20, and the opening of the vent 203 on the inner wall of the U-shaped tube 20 points towards the second disk 26; at least one through hole parallel to its axis is opened on the second disk 26. When there is water in the U-tube 20 and it is in contact with the anode plate 21 (i.e., there is no lack of water in the U-tube 20), the water pressure pushes the piston rod 25 to compress the spring 27, and the conductive posts A28 and B29 do not contact each other; when there is no water in the U-tube 20 and it is not in contact with the anode plate 21 (i.e., there is no lack of water in the U-tube 20), the elastic force of the spring 27 overcomes the water pressure and pushes the piston rod 25, and the conductive posts A28 and B29 contact each other.

[0030] See Figure 4 , Figure 7 The signal receiving component 70 includes a fixed plate 71, a guide rail 72, an electromagnet A 73, an electromagnet B 74, a pressure detector 75, and a sliding plate 76. A horizontal fixed plate 71 is fixed to the storage box 10; two parallel guide rails 72 are fixed to the upper side of the fixed plate 71; the sliding plate 76 is slidably mounted on the two guide rails 72. Electromagnets A73 and B74 are located on both sides of the sliding plate 76, respectively. The pressure detector 75 and the electromagnet B74 are located on the same side of the sliding plate 76, and the detection end of the pressure detector 75 is closer to the sliding plate 76 than the electromagnet B74. The pressure detector 75 is used to detect whether the sliding plate 76 is in contact with the pressure detector 75.

[0031] See Figure 8 The conductive post A28 is electrically connected to the negative terminal of the power supply via wire c03, and the conductive post B29 is electrically connected to the positive terminal of the power supply via wire d04. Electromagnet A73 is electrically connected to the circuit of conductor a01; electromagnet B74 is electrically connected to the circuit of conductor c03.

[0032] In summary, when there is water in the U-shaped tube 20 and it is in contact with the anode plate 21 (i.e., there is no lack of water in the U-shaped tube 20), the conductive pillars A28 and B29 are not in contact, the electromagnet B74 is not energized and has no magnetism, the electromagnet A73 is energized, and the sliding plate 76 is attracted by the magnetic force of the electromagnet A73 and comes into contact with the magnet A93.

[0033] When the water in the U-tube 20 does not contact the anode plate 21 (i.e., there is no water in the U-tube 20, the electromagnet B74 is not energized and has no magnetism), the elastic force of the spring 27 overcomes the water pressure and pushes the piston rod 25, and the conductive posts A28 and B29 come into contact. The electromagnet B74 is energized and has magnetism, the sliding plate 76 moves in the direction of the electromagnet B74, and the sliding plate 76 squeezes the pressure detector 75.

[0034] One end of the water supply pipe 80 is connected to the inner cavity of the U-shaped pipe 20, and the other end of the water supply pipe 80 is connected to a water source; the water pump 90 is installed on the water supply pipe 80. The pressure detector 75 is electrically connected to the controller 60. The pressure detector 75 transmits the signal of being squeezed by the sliding plate 76 to the controller 60. The water pump 90 is electrically connected to the controller 60. After receiving the signal of pressure from the pressure detector 75, the controller 60 will start the water pump 90 to replenish water to the U-shaped pipe 20. Furthermore, the water pump 90 is a flow pump. Each time the controller 60 receives a pressure signal from the pressure detector 75, it controls the water pump 90 to replenish the U-shaped pipe 20 with 1 / 3 of the volume of water.

[0035] Furthermore, the water supply pipe 80 is connected to the bottom of the U-shaped pipe 20.

[0036] Furthermore, one end of the guide rod 202 is fixed to the second disk 26, and the other end of the guide rod 202 slides through the side wall of the U-shaped tube 20 on the side of the second disk 26 away from the piston rod 25; Furthermore, the limiting block 201 is fixed to the inner wall of the cylindrical tube 23. When the end of the second disk 26 away from the piston rod 25 contacts the limiting block 201, the conductive post A28 and the conductive post B29 do not contact each other; that is, the spring 27 is not excessively compressed.

[0037] Furthermore, the axes of the cylindrical tube 23, the disk 24, the piston rod 25, and the second disk 26 are all horizontal and collinear.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A hydrogen production and storage integrated machine, characterized in that, Includes storage box, U-shaped tube, vent pipe, air gun, pressure detector and controller; The storage tank is used to hold hydrogen gas; Both ends of the U-shaped tube face upwards, and the bottom of the U-shaped tube is fixed to the upper outer wall of the storage box; an anode plate and a cathode plate are respectively installed directly below the two ends of the U-shaped tube; the anode plate and the cathode plate are both fixed to the inner wall of the U-shaped tube; The anode plate is electrically connected to the positive terminal of the power supply via wire a; The cathode plate is electrically connected to the negative terminal of the power supply via wire b; The U-shaped tube contains electrolyzed water; One end of the U-shaped tube above the cathode plate is connected to one end of the vent pipe, and the free end of the vent pipe is fixed to the upper end of the storage box and the two are connected to each other. The gas gun is fixedly connected to the outer wall of the storage tank; The pressure detector is fixed to the inner wall of the storage tank; The pressure detector is electrically connected to the controller.

2. The integrated hydrogen production and storage machine according to claim 1, characterized in that, The anode and cathode plates are at the same horizontal height.

3. The integrated hydrogen production and storage machine according to claim 2, characterized in that, It also includes a signal receiving component, a water supply pipe B, a water pump, wire c, and wire d; The U-shaped tube also includes a cylindrical tube, a disc, a piston rod, a second disc, a spring, conductive post A, conductive post B, a limiting block, a guide rod, and a vent hole; One end of the cylindrical tube is fixed to the inner wall of the U-shaped tube, and the cylindrical tube is located directly below the anode plate; One end of the disc is fixed to the free end of the cylindrical tube; the piston rod slides through the disc; the second disc slides through the cylindrical tube, and the piston rod is fixedly connected to the adjacent end of the second disc. The conductive pillar A and conductive pillar B are respectively fixed on the second disk and the adjacent end face of the disk, and the conductive pillar A and conductive pillar B are coaxial; One end of the spring is fixed to the second disk, and the inner wall of the U-shaped tube on the side of the second disk away from the piston rod is fixed to the free end of the spring. The vent hole penetrates one side wall of the U-shaped tube, and the opening of the vent hole on the inner wall of the U-shaped tube points towards the second disk; at least one through hole parallel to its axis is opened on the second disk; When water in the U-tube comes into contact with the anode plate, the water pressure pushes the piston rod to compress the spring, and the conductive posts A and B do not come into contact; when water in the U-tube does not come into contact with the anode plate, the spring force overcomes the water pressure and pushes the piston rod, and the conductive posts A and B come into contact. The signal receiving component includes a fixed plate, a guide rail, electromagnet A, electromagnet B, a pressure detector, and a sliding plate; A horizontal fixed plate is fixed to the storage box; two parallel guide rails are fixed to the upper side of the fixed plate; the sliding plate is slidably mounted on the two guide rails. Electromagnet A and electromagnet B are located on both sides of the sliding plate. The pressure detector and electromagnet B are located on the same side of the sliding plate, and the detection end of the pressure detector is closer to the sliding plate than that of electromagnet B. The conductive post A is electrically connected to the negative terminal of the power supply via wire c, and the conductive post B is electrically connected to the positive terminal of the power supply via wire d. Electromagnet A is electrically connected to the line of conductor a; electromagnet B is electrically connected to the line of conductor c. One end of the water supply pipe B is connected to the inner cavity of the U-shaped pipe, and the other end of the water supply pipe B is connected to a water source; the water pump is installed on the water supply pipe B. The pressure detector is electrically connected to the controller; the water pump is electrically connected to the controller, and the controller will start the water pump to replenish water to the U-shaped pipe after receiving a pressure signal from the pressure detector.

4. The integrated hydrogen production and storage machine according to claim 1, characterized in that, The controller is a PLC.

5. A hydrogen production and storage integrated machine according to claim 1, characterized in that, The storage box above the pressure detector has a certain cavity.

6. A hydrogen production and storage integrated machine according to claim 3, characterized in that, The water pump is a flow pump. Each time the controller receives a pressure signal from the pressure detector, it controls the water pump to replenish the U-shaped pipe with 1 / 3 of the U-shaped pipe's volume of water.

7. A hydrogen production and storage integrated machine according to claim 3, characterized in that, The water supply pipe B is connected to the bottom of the U-shaped pipe.

8. A hydrogen production and storage integrated machine according to claim 3, characterized in that, One end of the guide rod is fixed to the second disk, and the other end of the guide rod slides through the U-shaped tube sidewall of the second disk away from the piston rod.

9. A hydrogen production and storage integrated machine according to claim 3, characterized in that, The limiting block is fixed to the inner wall of the cylindrical tube. When the end of the second disk away from the piston rod contacts the limiting block, the conductive posts A and B do not contact each other.

10. A hydrogen production and storage integrated machine according to claim 3, characterized in that, The axes of the cylindrical tube, the disc, the piston rod, and the second disc are all horizontal and collinear.

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