Gas-liquid separation device for electrolyzed water

Abstract

The utility model provides a gas-liquid separation device for electrolyzing water, which comprises a separation device main body as well as an input pipeline and an output pipeline which are connected on the separation device main body, the output pipeline comprises a gas output pipe and a liquid output pipe, the separation device main body comprises a liquid device and a gas device which are communicated with each other, and the gas device is arranged above the liquid device; a gas outlet hole connected with a gas output pipe is formed in the top end of the gas device, and a hydrogen purity filter is arranged at the gas outlet hole; a liquid outlet hole connected to the liquid output pipe is formed in the bottom end of the liquid device, and a valve for controlling liquid discharge is arranged at the position of the liquid outlet hole. According to the utility model, hydrogen and water in the hydrogen are separated in the gas device, and the diameters of the filtering holes of the titanium filtering core are small, so that gas can just pass through the filtering holes and liquid is blocked outside, and therefore, anhydrous hydrogen is obtained through filtering and then is subjected to pressure measurement, storage and utilization. And residual water after filtration flows into the liquid container below, and the on-off of the valve can be controlled according to the storage amount of the internal liquid.

Description

Technical Field

[0001] This utility model relates to the field of electrolysis equipment, and in particular to a gas-liquid separation device for water electrolysis. Background Technology

[0002] Hydrogen production by electrolysis is a method of producing hydrogen gas by electrolyzing water. Its basic principle is to pass a direct current through an electrolytic cell filled with electrolyte; water molecules undergo an electrochemical reaction at the electrodes, decomposing into hydrogen and oxygen. This process can be carried out using an alkaline electrolyte or pure water and follows Faraday's law.

[0003] The basic principle of hydrogen production by electrolysis is to pass direct current through electrodes in an aqueous electrolyte solution, producing hydrogen at the cathode and oxygen at the anode. High-purity hydrogen is obtained by removing the oxygen from the hydrogen produced by water electrolysis. Modern industrial water electrolysis for hydrogen production can use unipolar or bipolar electrolyzers, with operating temperatures generally below 80℃. The power consumption for producing 1 standard cubic meter of hydrogen can be controlled between 3.99 and 5.12 kWh.

[0004] Currently, the produced hydrogen by electrolysis contains a large amount of water vapor, which needs to be filtered before it can be used. However, there is no effective method for filtering water vapor in the existing technology. Utility Model Content

[0005] This invention proposes a gas-liquid separation device for water electrolysis, which can filter and separate water from hydrogen gas to obtain dry, high-purity hydrogen gas.

[0006] The technical solution of this utility model is implemented as follows: a gas-liquid separation device for water electrolysis includes a separation device body and an input pipe and an output pipe connected thereto. The output pipe includes a gas output pipe and a liquid output pipe. The separation device body includes a liquid container and a gas container that are interconnected, and the gas container is arranged above the liquid container.

[0007] The top end of the gas container has an outlet hole for connecting to a gas output pipe, and a hydrogen purity filter is installed at the outlet hole; the bottom end of the liquid container has a liquid outlet hole for connecting to a liquid output pipe, and a valve for controlling liquid discharge is installed at the liquid outlet hole.

[0008] The gas output pipe is equipped with a safety monitoring device, and the liquid output pipe is equipped with a valve to control the on / off state.

[0009] Preferably, the safety monitoring device includes a pressure relief valve and a pressure gauge, and the pressure relief valve and pressure gauge are connected to the gas output pipe via a three-way valve.

[0010] Preferably, the hydrogen purity filter is a titanium filter element, which is fixedly installed on the top of the gasifier, and the upper end of the gasifier is sealed to the lower side of the gas outlet.

[0011] Preferably, the valve at the bottom outlet of the liquid container is a double float switch, which is located at the center of the liquid container and its lower end is set on the outlet.

[0012] Preferably, both the liquid container and the gas container are vertically arranged hollow cylindrical structures, and their interiors are connected.

[0013] Preferably, the liquid container and the gas container are two independent cylinders, with the volume of the liquid container being larger than that of the gas container, and the two are fixedly connected by a flange.

[0014] Preferably, the upper end of the gasifier is sealed and fixed by a flange cover and a small sealing gasket, with an outlet hole in the middle of the flange cover.

[0015] Preferably, the input pipe is located on the outer wall of the middle part of the gasifier and communicates with the interior of the gasifier.

[0016] Preferably, the liquid container is provided with three support feet, which are evenly distributed on the lower side of the bottom surface of the liquid container, and the liquid outlet hole and its connected liquid outlet connection pipe are located in the middle of the three support feet.

[0017] Preferably, a liquid level sensor is provided at the bottom of the liquid container, and the liquid level sensor works in conjunction with a dual float switch.

[0018] Compared with existing technologies, the advantages of this invention are as follows: Initial hydrogen gas enters the gasifier through an input pipe, where it is separated from the water. The hydrogen purity filter at the top of the gasifier is a titanium filter element with small pore diameters, allowing gas to pass through while blocking the liquid, thus obtaining anhydrous hydrogen gas for pressure testing and storage. The remaining water flows into the liquid container below, which has a valve at the bottom that controls the opening and closing of the valve according to the internal liquid level, thereby draining and recycling the water. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a structural breakdown diagram of the present invention.

[0021] In the diagram: 1. Liquid container; 2. Support foot; 3. Inlet pipe; 4. Gas container; 5. Flange cover; 6. Hydrogen purity filter; 7. Small sealing gasket; 8. Double float switch; 10. Connector; 11. Liquid outlet pipe; 12. Three-way valve; 13. Gas outlet pipe; 14. Pressure relief valve; 15. Pressure gauge; 16. Electric valve. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Example: See Figure 1 and Figure 2 A gas-liquid separation device for water electrolysis includes a separation device body and an input pipe 3 and an output pipe connected thereto. The output pipe includes a gas output pipe 13 and a liquid output pipe 11. The separation device body includes a liquid container 1 and a gas container 4 that are interconnected, and the gas container 4 is disposed above the liquid container 1.

[0026] The top of the gasifier 4 has an outlet hole for connecting to the gas output pipe 13, and a hydrogen purity filter 6 is provided at the outlet hole; the bottom of the liquidifier 1 has a liquid outlet hole for connecting to the liquid output pipe 11, and a valve for controlling liquid discharge is provided at the liquid outlet hole.

[0027] The gas output pipe 13 is installed on the gas outlet via the connector 10. The gas output pipe 13 is equipped with a pressure safety monitoring device, and the liquid output pipe 11 is equipped with a valve to control the on / off state.

[0028] The pressure safety monitoring device includes a pressure relief valve 14 and a pressure gauge 15, which are connected to the gas output pipe 13 via a three-way valve 12. Hydrogen gas is output from the gas output pipe 13. When passing through the pressure relief valve 14, if the pressure exceeds the pressure threshold, the pressure relief valve 14 will open to release pressure, ensuring the safety of the pipeline. The pressure gauge 15 can display the pressure value in real time, helping staff to understand the situation.

[0029] The hydrogen purity filter 6 is a titanium filter element, which is fixedly installed at the top inside the gasifier 4, with its upper end sealed to the lower side of the gas outlet. The titanium filter element is a new type of high-efficiency porous filter material made from titanium powder through processes such as powder grading, molding, sintering, and mechanical welding. Because its pore size and filtration accuracy can be adjusted within a wide range, it is widely used in self-lubrication, filtration, separation, catalysis, flame extinguishing, heat exchange, thermionic generation, and gas distribution. Main uses: Filtration of gases and liquids, and gas distribution. Filtration accuracy: 0.22–50 μm; Diameter: 30–80 mm; Length: 100–1000 mm. The small diameter of the titanium filter element's pores allows gas to pass through while blocking liquids, thus filtering out anhydrous hydrogen for pressure testing and storage.

[0030] The valve at the bottom outlet of the liquid container 1 is a double float switch 8, located at the central axis of the liquid container 1, with its lower end positioned on the outlet. By setting the parameters of the double float switch 8, the valve opening height can be adjusted as needed. When the water level in the liquid container 1 reaches a preset height, the double float switch 8 opens the valve, allowing water to flow from the outlet to the liquid output pipe 11, thus achieving on-demand discharge and storage / recycling. The liquid output pipe 11 is also equipped with an electric valve 16, which can be used in conjunction with the double float switch 8 to provide double safety.

[0031] Both the liquid container 1 and the gas container 4 are vertically arranged hollow cylindrical structures, and their interiors are connected.

[0032] The liquid container 1 and the gas container 4 are two independent cylinders. The volume of the liquid container 1 is larger than that of the gas container 4. The two are fixedly connected by a flange.

[0033] The upper end of the gas device 4 is sealed and fixed by a flange cover 5 and a small sealing gasket 7, with an air outlet in the middle of the flange cover 5.

[0034] The input pipe 3 is located on the outer wall of the middle part of the gasifier 4 and is connected to the interior of the gasifier 4.

[0035] The liquid container 1 is provided with three support feet 2, which are evenly distributed on the lower side of the bottom surface of the liquid container 1. The liquid outlet hole and its connected liquid outlet pipe are located in the middle of the three support feet 2.

[0036] The liquid level sensor is installed at the bottom of the liquid container 1, and the liquid level sensor works in conjunction with the double float switch 8.

[0037] In this application, the initial hydrogen gas enters the gasifier 4 through the input pipe 3. In the gasifier 4, the hydrogen gas and water are separated. The hydrogen purity filter 6 at the top of the gasifier 4 is a titanium filter element. The small diameter of the titanium filter element's pores allows gas to pass through while blocking the liquid, thus obtaining anhydrous hydrogen gas, which is then pressure-tested and stored for reuse. The remaining water after filtration flows into the liquid container 1 below. The liquid container 1 has a valve at its bottom, which can be controlled to open and close according to the internal liquid level, thereby draining and recycling the water.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gas-liquid separation device for water electrolysis, comprising a main body of the separation device and an input pipe and an output pipe connected thereto, wherein the output pipe includes a gas output pipe and a liquid output pipe, characterized in that: The main body of the separation device includes a liquid container and a gas container that are interconnected, with the gas container positioned above the liquid container; The top of the gasifier has an outlet hole for connecting to a gas output pipe, and a hydrogen purity filter is installed at the outlet hole; the bottom of the liquidifier has an outlet hole for connecting to a liquid output pipe, and a valve for controlling liquid discharge is installed at the outlet hole. The gas output pipe is equipped with a pressure safety monitoring device, and the liquid output pipe is equipped with a valve to control the on / off state.

2. The gas-liquid separation device for water electrolysis according to claim 1, characterized in that: The pressure safety monitoring device includes a pressure relief valve and a pressure gauge, and the pressure relief valve and pressure gauge are connected to the gas output pipe through a three-way valve.

3. The gas-liquid separation device for water electrolysis according to claim 1, characterized in that: The hydrogen purity filter is a titanium filter element, which is fixedly installed at the top inside the gasifier, with its upper end sealed to the lower side of the gas outlet.

4. The gas-liquid separation device for water electrolysis according to claim 1, characterized in that: The valve at the bottom outlet of the liquid container is a double float switch, which is located at the center of the liquid container and its lower end is set on the outlet.

5. The gas-liquid separation device for water electrolysis according to claim 1, characterized in that: Both the liquid container and the gas container are vertically arranged hollow cylindrical structures, and their interiors are connected.

6. The gas-liquid separation device for water electrolysis according to claim 5, characterized in that: The liquid container and the gas container are two independent cylinders, with the liquid container having a larger volume than the gas container. The two are fixedly connected by a flange.

7. The gas-liquid separation device for water electrolysis according to claim 1, characterized in that: The upper end of the gasifier is sealed and fixed by a flange cover and a small sealing gasket, with an outlet hole in the middle of the flange cover.

8. A gas-liquid separation device for water electrolysis according to claim 7, characterized in that: The input pipe is located on the outer wall of the middle part of the gasifier and is connected to the inside of the gasifier.

9. A gas-liquid separation device for water electrolysis according to claim 1, characterized in that: The liquid container is provided with three support feet, which are evenly distributed on the lower side of the bottom surface of the liquid container. The liquid outlet and its connected liquid outlet pipe are located in the middle of the three support feet.

10. A gas-liquid separation device for water electrolysis according to claim 1, characterized in that: A liquid level sensor is installed at the bottom of the liquid container, and the liquid level sensor works in conjunction with a dual float switch.

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