CN-224212787-U - Pressure regulating device for regulating pressure of hydrogen production system based on water seal and hydrogen production system

Abstract

The utility model discloses a pressure regulating device based on water seal regulation of hydrogen production system pressure and a hydrogen production system, comprising a vertical transparent outer tube, wherein two ends of the vertical transparent outer tube are sealed, a pressure regulating needle valve is arranged at the bottom of the vertical transparent outer tube, a gas discharge valve is arranged at the top of the vertical transparent outer tube, a pressure scale value is arranged on the outer surface of the vertical transparent outer tube, a water supplementing regulating valve and a gas external connecting tube are arranged on the outer surface of the vertical transparent outer tube at the upper end of the pressure scale value, a gas inner tube is arranged in the vertical transparent outer tube, the top of the gas inner tube is connected with the gas external connecting tube, the bottom of the gas inner tube is arranged at one side of the bottom of the vertical transparent outer tube, and the hydrogen production system adopts the pressure regulating device. The utility model reduces the cost of the alkaline water electrolysis hydrogen production post-treatment system, ensures more visual oxyhydrogen pressure regulation and more accurate pressure value regulation, and meets the multi-pressure working condition test requirements of the miniaturized and normal-pressure alkaline water hydrogen production device.

Inventors

• LIU HANPENG
• CUI TONG
• Yang Menbo
• ZHEN HONGFENG
• CHEN JIAN

Assignees

• 苏州希倍优氢能源科技有限公司

Dates

Publication Date

20260508

Application Date

20250707

Claims (10)

1. 1. The utility model provides a pressure regulating device based on hydrogen manufacturing system pressure is adjusted to water seal, its characterized in that, including vertical transparent outer tube, vertical transparent outer tube both ends seal, vertical transparent outer tube bottom is provided with the pressure regulation needle valve, vertical transparent outer tube top is provided with the gas discharge valve, be provided with the pressure scale value on the vertical transparent outer tube surface, be provided with moisturizing governing valve and gas take over outside the vertical transparent outer tube surface of pressure scale value upper end, be provided with the gas inner tube in the vertical transparent outer tube, gas inner tube top is connected with the gas take over outside, gas inner tube bottom sets up in vertical transparent outer tube bottom one side.
2. 2. The pressure regulating device based on the water seal for regulating the pressure of the hydrogen production system as claimed in claim 1, wherein the two ends of the vertical transparent outer tube are provided with a flange plate and a flange plate, and a sealing ring is arranged between the flange plate and is locked by a screw.
3. 3. The pressure regulating device for regulating the pressure of the hydrogen production system based on water seal as claimed in claim 2, wherein a connecting column is arranged in the middle of the bottom of the flange plate at the upper end, a conical separation cover is arranged at the bottom of the connecting column, and first holes are uniformly formed in the conical separation cover.
4. 4. A pressure regulating device for regulating pressure of a hydrogen production system based on water seal as in claim 3 wherein said conical separation housing has a liquid receiving groove on its periphery.
5. 5. The pressure regulating device based on water seal for regulating hydrogen production system pressure as claimed in claim 4, wherein a drain pipe is arranged at the bottom of said liquid receiving tank.
6. 6. The pressure regulating device for regulating the pressure of the hydrogen production system based on water seal as claimed in claim 3, wherein an upper conical cover is further arranged on the connecting column between the conical separation cover and the flange plate, second holes are uniformly formed in the upper conical cover, and the second holes and the first holes are arranged in a staggered manner.
7. 7. The pressure regulating device for regulating pressure of hydrogen production system based on water seal as in claim 6, wherein said connecting column comprises a fixed column and a movable column, one end of said fixed column is fixedly connected with the flange plate, the other end is provided with a step thread section, both ends of said movable column are provided with internal thread sections, said movable column fixes the conical separating cover by bolts, and said movable column cooperates with said step thread section to fix the upper conical cover.
8. 8. The hydrogen system pressure regulating device based on water seal as in claim 1 wherein the bottom height of said gas inner tube is level with the 0 scale mark of the pressure scale value of the vertical transparent outer tube.
9. 9. A hydrogen production system, characterized by comprising an electrolytic hydrogen production post-treatment frame, wherein at least two pressure regulating devices as claimed in any one of claims 1-8 are arranged on the electrolytic hydrogen production post-treatment frame, a hydrogen outlet pipe of the electrolytic hydrogen production post-treatment frame is connected with a gas external pipe of one of the pressure regulating devices, and an oxygen outlet pipe of the electrolytic hydrogen production post-treatment frame is connected with a gas external pipe of the other pressure regulating device.
10. 10. The hydrogen production system of claim 9, wherein the number of pressure regulating devices connected to the hydrogen outlet pipe and the oxygen outlet pipe is 2 or more, the plurality of pressure regulating devices are connected in series to form a regulating module, and the gas discharge valve and the gas take-over between two adjacent pressure regulating devices are connected.

Description

Pressure regulating device for regulating pressure of hydrogen production system based on water seal and hydrogen production system Technical Field The utility model relates to the technical field of hydrogen production by water electrolysis, in particular to a pressure regulating device for regulating the pressure of a hydrogen production system based on water seal and the hydrogen production system. Background The alkaline water electrolysis hydrogen production technology is a hydrogen production technology which is successfully applied to large-scale commercialization, and plays an important role in the field of water electrolysis hydrogen production due to the advantages of low cost, mature process, easy large-scale business and the like, however, along with the continuous development of the hydrogen energy industry, higher requirements are put forward on the stability of the electrolysis efficiency and the economy. The current small-sized normal-pressure water electrolysis hydrogen production system mainly comprises an alkaline electrolytic tank, a separation system frame and a control system, wherein an oxyhydrogen gas pressure regulating device in the hydrogen production system is the most important part, and is related to controlling and regulating the pressure in a cathode electrolytic cell and an anode electrolytic cell, if the pressure difference between the cathode chamber and the anode chamber is bigger, oxyhydrogen gas in the cathode chamber and oxyhydrogen gas in the anode chamber are extremely easy to be mutually connected, so that hydrogen in oxygen exceeds standard, and safety risk is caused. At present, the hydrogen production system is mainly regulated and controlled by a gas regulating valve, but the following problems exist for a small-sized normal-pressure water electrolysis hydrogen production system by adopting the gas regulating valve: 1. The small gas regulating valve has small pipe diameter, does not belong to standardized products, has low market selectivity, and has high price for the conventional gas regulating valve for the alkaline water hydrogen production system; 2. The pressure adjusting range is small, and the pressure gauge is small, so that the pressure adjustment is not intuitive for operators; 3. the working pressure of the oxyhydrogen pole chamber is low, and the precision error of the conventional gas regulating valve is large; Therefore, a simple and visual pressure regulating device is urgently needed to meet the application of an alkaline water electrolysis hydrogen production system test and a test system. Disclosure of Invention The utility model aims to solve the technical problem of providing a pressure regulating device and a hydrogen production system for regulating the pressure of the hydrogen production system based on water seal, which can reduce the cost of the alkaline water electrolysis hydrogen production post-treatment system, regulate the pressure more intuitively and regulate the pressure value more accurately, and meet the multi-pressure working condition test requirements of the miniaturized and normal-pressure alkaline water hydrogen production device. In order to solve the technical problems, the utility model provides a pressure regulating device based on water seal regulation hydrogen production system pressure, which comprises a vertical transparent outer tube, wherein two ends of the vertical transparent outer tube are sealed, a pressure regulating needle valve is arranged at the bottom of the vertical transparent outer tube, a gas discharge valve is arranged at the top of the vertical transparent outer tube, a pressure scale value is arranged on the outer surface of the vertical transparent outer tube, a water supplementing regulating valve and a gas external connecting tube are arranged on the outer surface of the vertical transparent outer tube at the upper end of the pressure scale value, a gas inner tube is arranged in the vertical transparent outer tube, the top of the gas inner tube is connected with the gas external connecting tube, and the bottom of the gas inner tube is arranged at one side of the bottom of the vertical transparent outer tube. Furthermore, both ends of the vertical transparent outer tube are provided with a flange plate and a flange plate, and a sealing ring is arranged between the flange plate and is locked by screws. Further, be provided with the spliced pole in the middle of the flange board bottom that is located the upper end, the spliced pole bottom is provided with the toper separation cover, evenly be provided with first hole on the toper separation cover. Further, a liquid receiving groove is arranged on the periphery of the conical separation cover. Further, a liquid drain pipe is arranged at the bottom of the liquid receiving tank. Further, an upper layer conical cover is further arranged on the connecting column between the conical separation cover and the flange plate, second holes are uniformly for