PEM water electrolysis hydrogen production test water management equipment
By designing a PEM electrolytic water hydrogen production water management equipment to monitor and control the temperature and conductivity of pure water in real time, the problem of mismatch in the PEM electrolytic water hydrogen production test is solved, and efficient and energy-saving pure water management is achieved, and the yield and purity of hydrogen gas are improved.
Patent Information
- Application Number
- CN202422142984.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-02
AI Technical Summary
During the PEM electrolytic water hydrogen production test, it is difficult to match pure water with different operating conditions, and it is impossible to provide pure water with a set water quality purity in time. There is a problem of wasted water and inconstant temperature, which affects the yield and purity of hydrogen.
A PEM electrolytic water hydrogen production and testing water management equipment is designed, including a fixing frame, a water bath, a pure water tank, a heat tracing tube, a hot water pump, a monitoring cylinder, a temperature sensor and a conductivity monitor, etc., by monitoring and controlling the temperature and conductivity of pure water in real time, it ensures that pure water enters the electrolytic cell at a constant temperature.
Real-time monitoring and control of pure water temperature and conductivity is achieved, the constant temperature and high purity of pure water are ensured, the waste of water and the problem of inconstant temperature are reduced, and the yield and purity of hydrogen are improved.
Smart Images
Figure CN223016989U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydrogen production by electrolyzing water, in particular to a PEM electrolytic water hydrogen production test water management device. Background Technique
[0002] Hydrogen production by electrolyzing water is one of the currently widely used and relatively mature hydrogen production methods. Especially for PEM electrolytic water, it has attracted wide attention due to its advantages such as high production rate, high purity, and good economic benefits. PEM electrolytic hydrogen production has the advantages of stability, faster dynamic response speed, cleanliness, and the ability to match the volatility of renewable energy power generation. It is the key point of future new energy technology development. In the research and development of pure water hydrogen production, the research and development of electrolytic cells need to be continuously improved through experiments and tests to achieve breakthroughs in terms of cost, lifespan, high power, and efficiency. During the research and development process, it is necessary to test the PEM electrolytic hydrogen production unit. Therefore, the PEM electrolytic water hydrogen production test equipment is a necessary requirement for the development of electrolytic water technology.
[0003] Currently, the problems that occur during the testing of PEM electrolytic hydrogen production units mainly focus on the difficulty of matching the supply of pure water to different operating conditions, the inability to provide pure water with the set water quality purity in a timely manner, and the situation of wasting water. In addition, there is a phenomenon of unstable temperature after the pure water is heated in a water bath and then heat traced through pipes. Because there is always an error of 1 - 2 °C in the resistance wire heat tracing and insulation, it affects the hydrogen production and purity.
[0004] Therefore, it is necessary to provide a new PEM electrolytic water hydrogen production test water management device to solve the above technical problems. Content of the Utility Model
[0005] The technical problem solved by the utility model is to provide a PEM electrolytic water hydrogen production test water management device that can monitor the temperature and conductivity of pure water at all times.
[0006] To solve the above technical problems, the PEM electrolytic water hydrogen production test water management device provided by the utility model includes: a fixing frame; a water bath tank is installed at the bottom end of the fixing frame, and a heating coil is installed inside the water bath tank; a pure water tank is installed inside the water bath tank; a heat tracing main pipe is installed inside the fixing frame, and a hot water pump inside the water bath tank is connected to the heat tracing main pipe through a hot water inlet pipe, and the heat tracing main pipe is connected to the inside of the water bath tank through a hot water outlet pipe; a metering pure water pump inside the pure water tank is connected to a spiral pipe through a water delivery pipe, and the spiral pipe is installed inside the heat tracing main pipe; a monitoring cylinder is installed at one end of the spiral pipe, and a temperature sensor and a conductivity monitor are installed inside the monitoring cylinder; a connecting pipe is installed at one end of the monitoring cylinder, and both ends of the return pipe are respectively connected to the connecting pipe and the pure water tank, and solenoid valves are respectively installed on the side walls of the connecting pipe and the return pipe.
[0007] Preferably, a filtering water pump is installed on the side wall of the fixing frame. The filtering water pump is sequentially communicated with an activated carbon filtering cylinder, a reverse osmosis membrane filter, and an electrodeionization filter, and the electrodeionization filter is communicated with the inside of the pure water tank through a water inlet pipe.
[0008] Preferably, an ionization water tank is installed on the side wall of the fixing frame, and the side wall of the ionization water tank is communicated with the connecting pipe; the side walls of the gas-liquid separator are respectively communicated with the ionization water tank and the dryer, and the gas-liquid separator is communicated with the inside of the water bath tank through a circulation pipe.
[0009] Preferably, the hot water inlet pipe and the hot water outlet pipe are respectively located on both sides of the pure water tank, and the bottom end of the hot water outlet pipe is fixedly connected with a spray pipe.
[0010] Preferably, the bottom end of the spray pipe is rotatably connected with a rotating head, and a plurality of spray nozzles are installed on the side wall of the rotating head, and the water flow spraying direction inside the spray nozzles is tangent to the side wall of the rotating head.
[0011] Preferably, a central processing unit is installed on the side wall of the fixing frame, a temperature sensor is installed inside the water bath tank, and a liquid level sensor is installed inside the pure water tank, and the central processing unit is electrically connected to the temperature sensor, the conductivity monitor, the hydraulic sensor, the filtering water pump, the heating coil, the hot water pump, the metering pure water pump, and the electromagnetic valve respectively.
[0012] Compared with the related art, the PEM electrolytic water hydrogen production test water management device provided by the present utility model has the following beneficial effects:
[0013] The present utility model provides a PEM electrolytic water hydrogen production test water management device. The pure water tank is installed inside the water bath tank, the water bath tank surrounds the pure water tank, and the water bath tank directly heats the pure water tank, which not only saves energy but also saves the device space; the water inside the pure water tank enters the inside of the heat tracing main pipe, and the hot water pump makes the hot water inside the water bath tank continuously move inside the heat tracing main pipe, thereby insulating the pure water inside the heat tracing main pipe and ensuring that the pure water enters the electrolytic cell at a constant temperature, with a temperature difference within 0.5 °C; the pure water inside the heat tracing main pipe enters the inside of the monitoring cylinder, and a temperature sensor and a conductivity monitor are installed inside the monitoring cylinder to respectively monitor the temperature and conductivity of the pure water. After passing the inspection, the pure water enters the inside of the ionization water tank, and the unqualified pure water flows back into the inside of the pure water tank through the return pipe; the ionization water tank ionizes the pure water, and the ionized gas enters the inside of the gas-liquid separator. After gas-liquid separation, the liquid directly enters the inside of the water bath tank through the water inlet pipe, reducing the waste water treatment link. Description of the Drawings
[0014] Figure 1Schematic structural diagram of a preferred embodiment of the PEM electrolytic water hydrogen production test water management device provided by the present utility model;
[0015] Figure 2 For Figure 1 Schematic internal view of the water bath shown;
[0016] Figure 3 For Figure 2 Enlarged schematic view of the structure at location A shown;
[0017] Figure 4 For Figure 2 Enlarged schematic view of the structure at location B shown;
[0018] Figure 5 Schematic circuit diagram provided by the present utility model.
[0019] Reference numerals in the figure: 1, fixing frame; 2, filtration water pump; 3, activated carbon filtration cylinder; 4, reverse osmosis membrane filter; 5, electrodeionization filter; 6, water inlet pipe; 7, water bath; 71, electric heating coil; 8, hot water inlet pipe; 9, hot water outlet pipe; 10, water delivery pipe; 11, tracing main pipe; 12, return pipe; 13, ionization water tank; 14, gas-liquid separator; 15, dryer; 16, circulation pipe; 17, pure water tank; 18, metering pure water pump; 19, hot water pump; 20, spiral pipe; 21, connecting pipe; 22, solenoid valve; 23, monitoring cylinder; 24, temperature sensor; 25, conductivity monitor; 26, spray pipe; 27, rotating head; 28, spray head. Detailed implementation manners
[0020] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0021] Please refer to Figures 1 to 5 , Figure 1 Schematic structural diagram of a preferred embodiment of the PEM electrolytic water hydrogen production test water management device provided by the present utility model; Figure 2 For Figure 1 Schematic internal view of the water bath shown; Figure 3 For Figure 2 Enlarged schematic view of the structure at location A shown; Figure 4 For Figure 2 Enlarged schematic view of the structure at location B shown;
[0022] Figure 5Schematic diagram of the circuit structure provided by the present utility model. The PEM electrolytic water hydrogen production test water management device includes: a fixing frame 1; a water bath tank 7 is installed at the bottom end of the fixing frame 1, a heating coil 71 is installed inside the water bath tank 7, and the heating coil 71 operates to heat the inside of the water bath tank 7; a pure water tank 17 is installed inside the water bath tank 7; the pure water tank 17 is installed inside the water bath tank 7, the water bath tank 7 surrounds the pure water tank 17, and the water bath tank 7 directly heats the pure water tank 17, which saves both energy and device space.
[0023] A heat tracing main pipe 11 is installed inside the fixing frame 1, a hot water pump 19 inside the water bath tank 7 is connected to the heat tracing main pipe 11 through a hot water inlet pipe 8, and the heat tracing main pipe 11 is connected to the inside of the water bath tank 7 through a hot water outlet pipe 9; a metering pure water pump 18 inside the pure water tank 17 is connected to a spiral pipe 20 through a water delivery pipe 10, and the spiral pipe 20 is installed inside the heat tracing main pipe 11; the water inside the pure water tank 7 enters the spiral pipe 20 inside the heat tracing main pipe 11, and the hot water pump 19 makes the hot water inside the water bath tank 7 continuously move inside the heat tracing main pipe 11, thereby keeping the pure water inside the spiral pipe 20 warm, ensuring that the pure water enters the electrolytic water tank 13 at a constant temperature, and the temperature difference is within 0.5 °C.
[0024] One end of the spiral pipe 20 is installed with a monitoring cylinder 23, a temperature sensor 24 and a conductivity monitor 25 are installed inside the monitoring cylinder 23; one end of the monitoring cylinder 23 is installed with a connecting pipe 21, and both ends of the return pipe 12 are respectively connected to the connecting pipe 21 and the pure water tank 17, and solenoid valves 22 are respectively installed on the side walls of the connecting pipe 21 and the return pipe 12; the pure water inside the spiral pipe 20 enters the inside of the monitoring cylinder 23, and the temperature sensor 24 and the conductivity monitor 25 installed inside the monitoring cylinder 23 respectively monitor the temperature and conductivity of the pure water. After passing the inspection, the pure water enters the inside of the ionization water tank 13 through the connecting pipe 21, and the unqualified pure water flows into the inside of the pure water tank 17 through the return pipe 12.
[0025] A filtering water pump 2 is installed on the side wall of the fixing frame 1. The filtering water pump 2 is successively connected to an activated carbon filtering cylinder 3, a reverse osmosis membrane filter 4 and an electrodeionization filter 5, and the electrodeionization filter 5 is connected to the inside of the pure water tank 17 through a water inlet pipe 6. The filtering water pump 5 operates to push the pure water to move successively inside the activated carbon filtering cylinder 3, the reverse osmosis membrane filter 4 and the electrodeionization filter 5. The activated carbon filtering cylinder 3, the reverse osmosis membrane filter 4 and the electrodeionization filter 5 filter the pure water to remove impurities inside the pure water. After filtration, the pure water enters the inside of the pure water tank 17.
[0026] A side wall of the fixing frame 1 is provided with an ionization water tank 13, and a side wall of the ionization water tank 13 is communicated with the connecting pipe 21; side walls of the gas-liquid separator 14 are respectively communicated with the ionization water tank 13 and the dryer 15, and the gas-liquid separator 14 is communicated with the inside of the water bath tank 7 through a circulation pipe 16. Pure water is ionized inside the ionization water tank 13, and the gas generated after ionization enters the inside of the gas-liquid separator 14. After gas-liquid separation, the separated liquid enters the inside of the water bath tank 7 through the circulation pipe 16, and the separated gas is discharged after being dried by the dryer 15.
[0027] The hot water inlet pipe 8 and the hot water outlet pipe 9 are respectively located on both sides of the pure water tank 17. The bottom end of the hot water outlet pipe 9 is fixedly connected to a spray pipe 26. The bottom end of the spray pipe 26 is rotatably connected to a rotating head 27. A plurality of spray heads 28 are installed on the side wall of the rotating head 27, and the water flow direction inside the spray heads 28 is tangent to the side wall of the rotating head 27. The hot water pump 19 enters the inside of the heat tracing main pipe 11 through the hot water inlet pipe 8. The hot water inside the heat tracing main pipe 11 then enters the inside of the spray pipe 28 and the rotating head 27 through the hot water outlet pipe 9, and the hot gas then sprays out along the direction tangent to the side wall of the rotating head 27 through the spray heads 28, so as to drive the hot water to move inside the water bath tank 7. Moreover, the hot water inlet pipe 8 and the hot water outlet pipe 9 are respectively located on both sides of the pure water tank 17, accelerating the flow rate of the hot water inside the water bath tank 7 and making the hot water and the pure water tank 17 heated evenly.
[0028] A central processor is installed on the side wall of the fixing frame 1, and a temperature sensor 24 is installed inside the water bath tank 7 and a liquid level sensor is installed inside the pure water tank 17. In order to facilitate the liquid level sensor to monitor the water level inside the pure water tank 17, and the central processor is electrically connected to the temperature sensor 24, the conductivity monitor 25, the hydraulic sensor, the filtration water pump 2, the heating coil 71, the hot water pump 19, the metering pure water pump 18 and the solenoid valve 22 respectively.
[0029] The working principle of the PEM electrolysis water hydrogen production test water management device provided by the present utility model is as follows: When the device is powered on, the central processor operates to turn on the heating coil 71 to heat the inside of the water bath 7. The temperature sensor 24 transmits the temperature information inside the water bath 7 to the central processor, and the central processor operates to keep the temperature inside the water bath 7 within an appropriate range; The central processor operates to turn on the filtration water pump 2, and the filtration water pump 5 operates to extract pure water, so that the pure water moves successively inside the activated carbon filter cartridge 3, the reverse osmosis membrane filter 4, and the electrodeionization filter 5. The activated carbon filter cartridge 3, the reverse osmosis membrane filter 4, and the electrodeionization filter 5 filter the pure water to remove impurities inside the pure water. After filtration, the pure water enters the inside of the pure water tank 17. The hydraulic sensor monitors the water level inside the pure water tank 17. After the water inside the pure water tank 17 reaches 2 / 3, the central processor operates to turn off the filtration water pump 5 to stop water intake. The central processor operates to turn on the hot water pump 19, and the hot water pump 19 enters the inside of the heat tracing main pipe 11 through the hot water inlet pipe 8. The hot water inside the heat tracing main pipe 11 then enters the inside of the spray pipe 28 and the rotating head 27 through the hot water outlet pipe 9, and the hot gas then sprays out along the direction tangent to the side wall of the rotating head 27 through the spray head 28, thereby driving the hot water to move inside the water bath 7. Moreover, the hot water inlet pipe 8 and the hot water outlet pipe 9 are respectively located on both sides of the pure water tank 17, accelerating the flow rate of the hot water inside the water bath 7 and making the hot water and the pure water tank 17 heated evenly. The central processor turns on the metering pure water pump 18, and pumps the pure water into the inside of the spiral pipe 20 through the water delivery pipe 10. The pure water spirally moves inside the spiral pipe 20, making the hot water inside the water bath 7 continuously move inside the heat tracing main pipe 11, thereby insulating the pure water inside the spiral pipe 20 and ensuring that the pure water enters the electrolytic cell 13 at a constant temperature with a temperature difference within 0.5°C. The pure water inside the spiral pipe 20 enters the inside of the monitoring cylinder 23. A temperature sensor 24 and a conductivity monitor 25 are installed inside the monitoring cylinder 23 to monitor the temperature and conductivity of the pure water respectively. The temperature sensor 24 and the conductivity monitor 25 transmit the monitored information to the central processor, and the central processor judges whether the pure water is qualified. After passing the qualification, the central processor opens the solenoid valve 22 on the side wall of the connecting pipe 21, so that the pure water enters the inside of the electrolytic cell 13 through the connecting pipe 21. If it is unqualified, the central processor opens the solenoid valve 22 on the side wall of the return pipe 12, so that the pure water flows into the inside of the pure water tank 17 through the return pipe 12. The qualified pure water is ionized inside the electrolytic cell 13, and the gas generated after ionization enters the inside of the gas-liquid separator 14. After the gas-liquid separation, the separated liquid enters the inside of the water bath 7 through the circulation pipe 16, and the separated gas is discharged after being dried by the dryer 15.
[0030] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be similarly included in the patent protection scope of the present invention.
Claims
1. A PEM electrolysis water hydrogen production test water management device, characterized in that: include: A fixing frame (1); a water bath (7) is installed at the bottom end of the fixing frame (1), and a heating coil (71) is installed inside the water bath (7); a pure water tank (17) is installed inside the water bath (7); a large heating pipe (11) is installed inside the fixing frame (1), a hot water pump (19) inside the water bath (7) is connected to the large heating pipe (11) through a hot water inlet pipe (8), and the large heating pipe (11) is connected to the inside of the water bath (7) through a hot water outlet pipe (9); The metering pure water pump (18) inside the pure water tank (17) is connected to the spiral tube (20) through the water delivery pipe (10), and the spiral tube (20) is installed inside the large heating pipe (11); a monitoring tube (23) is installed at one end of the spiral tube (20), and a temperature sensor (24) and a conductivity monitor (25) are installed inside the monitoring tube (23); a connecting tube (21) is installed at one end of the monitoring tube (23), and the two ends of the return pipe (12) are respectively connected to the connecting tube (21) and the pure water tank (17), and electromagnetic valves (22) are respectively installed on the side walls of the connecting tube (21) and the return pipe (12).
2. The PEM water electrolysis hydrogen production test water management equipment according to claim 1, characterized in that: A filtering water pump (2) is installed on the side wall of the fixing frame (1), and the filtering water pump (2) is connected to the activated carbon filter cartridge (3), the reverse osmosis membrane filter (4) and the electrodeionization filter (5) in sequence, and the electrodeionization filter (5) is connected to the interior of the pure water tank (17) through a water inlet pipe (6).
3. The PEM water electrolysis hydrogen production test water management equipment according to claim 1, characterized in that: An ionized water tank (13) is installed on the side wall of the fixed frame (1), and the side wall of the ionized water tank (13) is connected to the connecting pipe (21); the side wall of the gas-liquid separator (14) is respectively connected to the ionized water tank (13) and the dryer (15), and the gas-liquid separator (14) is connected to the interior of the water bath (7) through a circulation pipe (16).
4. The PEM water electrolysis hydrogen production test water management equipment according to claim 1, characterized in that: The hot water inlet pipe (8) and the hot water outlet pipe (9) are respectively located on both sides of the pure water tank (17), and the bottom end of the hot water outlet pipe (9) is fixedly connected to the spray pipe (26).
5. The PEM water electrolysis hydrogen production test water management equipment according to claim 4, characterized in that: The bottom end of the spray pipe (26) is rotatably connected to a rotating head (27), and a plurality of spray heads (28) are installed on the side wall of the rotating head (27), and the direction in which water flows from the inside of the spray heads (28) are sprayed is tangent to the side wall of the rotating head (27).
6. The PEM water electrolysis hydrogen production test water management equipment according to claim 2, characterized in that: A central processing unit is installed on the side wall of the fixing frame (1), a temperature sensor (24) is installed inside the water bath (7), and an internal liquid level sensor is installed inside the pure water tank (17), and the central processing unit is electrically connected to the temperature sensor (24), the conductivity monitor (25), the hydraulic sensor, the filtered water pump (2), the heating coil (71), the hot water pump (19), the metering pure water pump (18) and the solenoid valve (22).