Differential pressure type oxygen and hydrogen production integrated system

Abstract

The utility model discloses a differential pressure type oxygen and hydrogen production integrated system which comprises a water supply unit, an electrolytic cell group, a hydrogen outlet unit and an oxygen outlet unit, the water supply unit is connected to the electrolytic cell set and provides electrolytic water for the electrolytic cell set, the electrolytic cell set is used for electrolyzing water, the hydrogen outlet unit is connected to the electrolytic cell set and comprises a hydrogen outlet pipeline, and a check valve, a pressure sensor, an oil pressure valve, an air-cooled heat exchanger, a steam-water separator, a first drying tank, a second drying tank and a safety valve are sequentially arranged on the hydrogen outlet pipeline. The hydrogen purification device is used for purifying and conveying hydrogen; the oxygen outlet unit is connected to the electrolytic cell set and comprises an oxygen outlet pipeline, and an air cooling heat exchanger, a steam-water separator, a third drying tank, a palladium catalyst tank, a fourth drying tank and a safety valve are sequentially arranged on the oxygen outlet pipeline and used for purifying and conveying oxygen. According to the system, gas treatment and safety protection devices are additionally arranged in the oxygen outlet unit and the hydrogen outlet unit, so that the safety of oxygen production and hydrogen production is ensured, and the purity of hydrogen and oxygen is also ensured.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen production technology, and in particular to a differential pressure integrated oxygen and hydrogen production system. Background Technology

[0002] In short, an automated hydrogen production and refilling system is a system integrating advanced technology. Its main function is to automatically decompose water molecules into hydrogen and oxygen, and then further process them for subsequent use. These devices typically rely on electrolysis to electrolyze water, converting electrical energy into chemical energy to produce hydrogen and oxygen. The application prospects of automated hydrogen production and refilling systems are particularly broad. Hydrogen, as a clean and harmless energy source, is considered one of the important alternatives to future energy sources. Furthermore, automated hydrogen production and refilling systems also have important applications in the medical field. Besides the medical and energy sectors, automated hydrogen production and refilling systems also have broad application potential in aviation, automotive, and construction industries.

[0003] Current hydrogen production systems only produce hydrogen and do not utilize oxygen. Furthermore, the hydrogen and oxygen outlets are not treated, resulting in hydrogen and oxygen containing large amounts of water, making them unusable directly. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a differential pressure integrated oxygen and hydrogen production system. Gas processing and safety protection devices are added to both the oxygen and hydrogen production units, ensuring both the safety of oxygen and hydrogen production and the purity of hydrogen and oxygen.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A differential pressure integrated oxygen and hydrogen production system includes a water supply unit, an electrolyzer assembly, a hydrogen output unit, and an oxygen output unit. The water supply unit is connected to the electrolyzer assembly and provides water for electrolysis. The electrolyzer assembly is used for water electrolysis.

[0007] The hydrogen outlet unit is connected to the electrolyzer assembly. The hydrogen outlet unit includes a hydrogen outlet pipeline, on which are sequentially installed a first check valve, a first pressure sensor, a first oil pressure valve, a first air-cooled heat exchanger, a first steam-water separator, a first drying tank, a second drying tank, and a first safety valve, for purifying and transporting hydrogen.

[0008] The oxygen outlet unit is connected to the electrolytic cell group. The oxygen outlet unit includes an oxygen outlet pipeline, on which a second air-cooled heat exchanger, a second steam-water separator, a third drying tank, a palladium catalyst tank, a fourth drying tank, and a second safety valve are sequentially arranged for purifying and transporting oxygen.

[0009] Further, the water supply unit comprises a water tank, a liquid level sensor, a resin purification tank, a booster gear pump, a water replenishing pump, an electric conductivity sensor, a flow sensor, a water inlet pipe and a water outlet pipe, the liquid level sensor is arranged on the water tank and is used for sensing the water capacity in the water tank, the water inlet pipe is connected to the upper end of the water tank, the water replenishing pump is arranged on the water inlet pipe, and the water outlet pipe is connected to the lower end of the water tank.

[0010] Further, the lower end of the water tank is connected with a branch pipe, the water tank is connected with the electrolytic cell group and the water outlet pipe through the branch pipe, and the resin purification tank, the booster gear pump, the electric conductivity sensor and the flow sensor are sequentially arranged on the branch pipe connected between the water tank and the electrolytic cell group.

[0011] Further, the first steam-water separator and the second steam-water separator are connected with the water tank through pipelines respectively.

[0012] Further, the electrolytic cell group is provided with a hydrogen outlet port and an oxygen outlet port, the hydrogen outlet port is connected with the hydrogen outlet unit and is used for conveying the hydrogen generated by the electrolytic cell group and steam mixed with the hydrogen to the hydrogen outlet unit, and the oxygen outlet port is connected with the oxygen outlet unit and is used for conveying the oxygen generated by the electrolytic cell group and steam mixed with the oxygen to the oxygen outlet unit.

[0013] Further, the hydrogen outlet pipeline is connected with the hydrogen outlet port, the first drying tank is a color-changing silica gel tank, and the second drying tank is a molecular sieve tank.

[0014] Further, the hydrogen outlet pipeline is further provided with a second check valve and a second pressure sensor, the first check valve, the first pressure sensor, the first oil pressure valve, the first air-cooled heat exchanger, the first steam-water separator, the first drying tank, the second drying tank, the first safety valve, the second check valve and the second pressure sensor are sequentially arranged on the hydrogen outlet pipeline in the hydrogen outlet direction.

[0015] Further, the oxygen outlet pipeline is connected with the oxygen outlet port, the third drying tank is a color-changing silica gel tank, and the fourth drying tank is a molecular sieve tank.

[0016] Further, the oxygen outlet pipeline is further provided with a third check valve and a third pressure sensor, the second air-cooled heat exchanger, the second steam-water separator, the third drying tank, the palladium catalyst tank, the fourth drying tank, the second safety valve, the third check valve and the third pressure sensor are sequentially arranged on the oxygen outlet pipeline in the oxygen outlet direction.

[0017] The utility model discloses the beneficial effect is:

[0018] 1、The oxygen and hydrogen decomposed by the electrolytic cell group in the system are first subjected to air cooling heat exchange, so that the temperature is reduced, the water vapor in the oxygen and hydrogen is condensed, and then enters the water vapor separators at the oxygen end and the hydrogen end, the separated water returns to the water tank, the separated oxygen is further treated by the color-changing silica gel tank, the palladium catalyst tank and the molecular sieve tank, so that the water content and hydrogen content in the oxygen are greatly reduced, the separated hydrogen is further treated by the color-changing silica gel tank and the molecular sieve tank, so that the water content and hydrogen content in the hydrogen are greatly reduced, and the purity of the oxygen and hydrogen is improved.

[0019] 2、The water tank of the system is provided with a booster gear pump, so that the oxygen end and the water circuit are kept at a certain pressure, and the gas-liquid separation of the oxygen is facilitated.

[0020] 3、Pressure sensors, safety valves, check valves and other protection devices are added to the hydrogen production and oxygen production pipelines, the pressure sensors are used to judge the pressure of the pipelines, and the hydrogen and oxygen output and the safe operation of the system are monitored. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a connection schematic diagram of the differential pressure type oxygen production and hydrogen production integrated system.

[0022] Figure 2 It is a connection schematic diagram of the differential pressure type oxygen production and hydrogen production integrated system. Figure 1

[0023] It is a connection schematic diagram of the differential pressure type oxygen production and hydrogen production integrated system. Figure 3 Figure 1 It is a connection schematic diagram of the differential pressure type oxygen production and hydrogen production integrated system.

[0024] Figure 4 Figure 1 It is a connection schematic diagram of the differential pressure type oxygen production and hydrogen production integrated system.

[0025] REFERENCE SIGNS:

[0026] 10-water supply unit; 11-water tank; 12-liquid level sensor; 13-resin purification tank; 14-boosting gear pump; 15-water supplement pump; 16-conductivity sensor; 17-flow sensor; 18-water inlet pipe; 19-drain pipe; 110-tapping pipeline;

[0027] 20-electrolytic cell group;

[0028] ​​30 - oxygen outlet unit; 31 - oxygen outlet pipeline; 32 - first check valve; 33 - first pressure sensor; 34 - first oil pressure valve; 35 - first air-cooled heat exchanger; 36 - first steam-water separator; 37 - first dry tank; 38 - second dry tank; 39 - first safety valve; 310 - second check valve; 311 - second pressure sensor;

[0029] 40 - oxygen outlet unit; 41 - oxygen outlet pipeline; 42 - second air-cooled heat exchanger; 43 - second steam-water separator; 44 - third dry tank; 45 - palladium catalyst tank; 46 - fourth dry tank; 47 - second safety valve; 48 - third check valve; 49 - third pressure sensor. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "vertical direction", "upper", "lower", "horizontal" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, "first", "second", "third", "fourth" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "provided", "installed", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be connected through an intermediate medium, it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] As Figures 1 to 4As shown in the utility model embodiment provides a kind of differential pressure type oxygen production hydrogen production integration system, including water supply unit 10, electrolytic cell group 20, hydrogen outlet unit 30 and oxygen outlet unit 40, water supply unit 10 is connected to electrolytic cell group 20 for electrolytic cell group 20 provides electrolysis water, electrolytic cell group 20 is used to electrolytic water, hydrogen outlet unit 30 is connected to electrolytic cell group 20, for hydrogen purification and transport, oxygen outlet unit 40 is connected to electrolytic cell group 20, for oxygen purification and transport.

[0034] As Figures 1 to 2 Shown in the embodiment, water supply unit 10 includes water tank 11, liquid level sensor 12, resin purification tank 13, booster gear pump 14, water replenishment pump 15, conductivity sensor 16, flow sensor 17, water inlet pipe 18 and drain pipe 19.Liquid level sensor 12 is arranged in water tank 11, and liquid level sensor 12 is used to sense the water capacity in water tank 11, water inlet pipe 18 is connected to the upper end of water tank 11, water replenishment pump 15 is arranged on water inlet pipe 18, drain pipe 19 is connected to the lower end of water tank 11, and the inlet and outlet pipes and booster gear pump 14 and water replenishment pump 15 are used to supply water and drain water to the whole system.

[0035] The lower end of water tank 11 is connected with a tapping pipeline 110, and water tank 11 is connected with electrolytic cell group 20 and drain pipe 19 through tapping pipeline 110, and resin purification tank 13, booster gear pump 14, conductivity sensor 16 and flow sensor 17 are arranged on the tapping pipeline 110 connected between water tank 11 and electrolytic cell in sequence.The water pump of water tank 11 of the system is selected as booster gear pump 14, and the water path of the booster pump is communicated with the pressure of the oxygen path when the system is designed, and the pressure of the water path is equal to the pressure of the oxygen end, so that the oxygen end and the water path maintain a certain pressure, facilitating the gas-liquid separation of oxygen.

[0036] As Figures 1 to 3 Shown in the embodiment, electrolytic cell group 20 is provided with two electrolytic cells, and the two electrolytic cells are provided with a hydrogen outlet port and an oxygen outlet port in communication, the hydrogen outlet port is connected to hydrogen outlet unit 30 and transports hydrogen generated by electrolytic cell group 20 and steam mixed with hydrogen to hydrogen outlet unit 30, and the oxygen outlet port is connected to oxygen outlet unit 40 and transports oxygen generated by electrolytic cell group 20 and steam mixed with oxygen to oxygen outlet unit 40.

[0037] As Figures 1 to 3 Shown in the embodiment, hydrogen outlet unit 30 is connected to electrolytic cell group 20, and hydrogen outlet unit 30 includes hydrogen outlet pipeline 31, first check valve 32, first pressure sensor 33, first oil pressure valve 34, first air-cooled heat exchanger 35, first steam-water separator 36, first drying tank 37, second drying tank 38, first safety valve 39, second check valve 310 and second pressure sensor 311 are arranged on hydrogen outlet pipeline 31 in sequence along the hydrogen outlet direction, for hydrogen purification and transport.

[0038] As Figures 1 to 4 shown, in this embodiment, the oxygen outlet unit 40 is connected to the electrolytic cell group 20, and the oxygen outlet unit 40 includes an oxygen outlet pipeline 41, on which a second air-cooled heat exchanger 42, a second steam-water separator 43, a third drying tank 44, a palladium catalyst tank 45, a fourth drying tank 46, a second safety valve 47, a third check valve 48 and a third pressure sensor 49 are sequentially arranged in the oxygen outlet direction, for purifying and conveying oxygen.

[0039] In this embodiment, the first drying tank 37 and the third drying tank 44 are color-changing silica gel tanks, and the second drying tank 38 and the fourth drying tank 46 are molecular sieve tanks, for drying gas; the palladium catalyst tank 45 removes trace hydrogen in oxygen; the first steam-water separator 36 and the second steam-water separator 43 are both connected to the water tank 11 through pipelines, and the separated water can be returned to the water tank 11.

[0040] In this embodiment, protection devices such as pressure sensors, safety valves and check valves are added to the hydrogen production pipeline and the oxygen production pipeline, and the pressure sensors are used to judge the pressure of the pipeline and monitor the hydrogen and oxygen output and the safe operation of the system.

[0041] In the utility model, the oxygen and hydrogen decomposed by the electrolytic cell group in the system are first cooled by the coil pipe, so that the temperature is reduced and the water vapor in the oxygen is condensed, and then the oxygen enters the steam-water separator at the oxygen end, the separated water returns to the water tank, and the separated oxygen is further treated by the color-changing silica gel tank, the palladium catalyst tank and the molecular sieve tank, so that the water content and hydrogen content in the oxygen are greatly reduced, the separated hydrogen is further treated by the color-changing silica gel tank and the molecular sieve tank, so that the water content and hydrogen content in the hydrogen are greatly reduced, and the purity of the oxygen and hydrogen is improved.

[0042] The above only expresses the preferred technical solution of the utility model, which is described in detail, but it cannot be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, and the utility model also intends to include these changes and modifications.

Claims

1. A differential pressure integrated oxygen and hydrogen production system, characterized in that: The water supply unit is connected to the electrolytic cell group and provides water for electrolysis for the electrolytic cell group, The hydrogen outlet unit is connected to the electrolytic cell group, and the hydrogen outlet unit comprises a hydrogen outlet pipeline, and a first check valve, a first pressure sensor, a first oil pressure valve, a first air-cooled heat exchanger, a first steam-water separator, a first drying tank, a second drying tank and a first safety valve are sequentially arranged on the hydrogen outlet pipeline for purifying and conveying hydrogen, The oxygen outlet unit is connected to the electrolytic cell group, and the oxygen outlet unit comprises an oxygen outlet pipeline, and a second air-cooled heat exchanger, a second steam-water separator, a third drying tank, a palladium catalyst tank, a fourth drying tank and a second safety valve are sequentially arranged on the oxygen outlet pipeline for purifying and conveying oxygen.

2. The differential pressure type integrated oxygen production and hydrogen production system according to claim 1, characterized in that: The water supply unit comprises a water tank, a liquid level sensor, a resin purification tank, a booster gear pump, a water replenishment pump, an electric conductivity sensor, a flow sensor, a water inlet pipe and a drain pipe, the liquid level sensor is arranged on the water tank, the liquid level sensor is used to sense the water capacity in the water tank, the water inlet pipe is connected to the upper end of the water tank, the water replenishment pump is arranged on the water inlet pipe, and the drain pipe is connected to the lower end of the water tank.

3. The differential pressure type integrated oxygen production and hydrogen production system according to claim 2, characterized in that: The lower end of the water tank is connected with a tapping pipeline, and the water tank is connected with the electrolytic cell group and the drain pipe through the tapping pipeline.

4. The differential pressure type integrated oxygen production and hydrogen production system according to claim 3, characterized in that: The resin purification tank, the booster gear pump, the electric conductivity sensor and the flow sensor are sequentially arranged on the tapping pipeline connected between the water tank and the electrolytic cell group.

5. The differential pressure type integrated oxygen production and hydrogen production system according to claim 2, characterized in that: The first steam-water separator and the second steam-water separator are respectively connected with the water tank through pipelines.

6. The differential pressure type integrated oxygen production and hydrogen production system according to claim 1, characterized in that: The electrolytic cell group is provided with a hydrogen outlet port and an oxygen outlet port, the hydrogen outlet port is connected to the hydrogen outlet unit and conveys hydrogen generated by the electrolytic cell group and steam mixed with the hydrogen to the hydrogen outlet unit, The oxygen outlet port is connected to the oxygen outlet unit and conveys oxygen generated by the electrolytic cell group and steam mixed with the oxygen to the oxygen outlet unit.

7. The differential pressure type integrated oxygen production and hydrogen production system according to claim 6, characterized in that: The hydrogen outlet pipeline is connected to the hydrogen outlet port, the first drying tank is a color-changing silica gel tank, and the second drying tank is a molecular sieve tank.

8. The differential pressure type integrated oxygen production and hydrogen production system according to claim 7, characterized in that: The hydrogen outlet pipeline is further provided with a second check valve and a second pressure sensor, and the first check valve, the first pressure sensor, the first oil pressure valve, the first air-cooled heat exchanger, the first steam-water separator, the first drying tank, the second drying tank, the first safety valve, the second check valve and the second pressure sensor are sequentially arranged on the hydrogen outlet pipeline in the hydrogen outlet direction.

9. The differential pressure type integrated oxygen production and hydrogen production system according to claim 6, characterized in that: The oxygen outlet pipeline is connected to the oxygen outlet port, the third drying tank is a color-changing silica gel tank, and the fourth drying tank is a molecular sieve tank.

10. The differential pressure type integrated oxygen production and hydrogen production system according to claim 9, characterized in that: The oxygen outlet pipeline is further provided with a third check valve and a third pressure sensor, and the second air-cooled heat exchanger, the second steam-water separator, the third drying tank, the palladium catalyst tank, the fourth drying tank, the second safety valve, the third check valve and the third pressure sensor are sequentially arranged on the oxygen outlet pipeline in the oxygen outlet direction.

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