CN220132370U

CN220132370U - Gas collecting system capable of realizing rapid adjustment of gas pressure and liquid level balance control

Info

Publication number: CN220132370U
Application number: CN202321214409.4U
Authority: CN
Inventors: 崔少平; 巨攀龙; 朱金超; 任俊; 朱琛; 张�杰
Original assignee: Xi'an Longji Hydrogen Energy Technology Co ltd
Current assignee: Xi'an Longji Hydrogen Energy Technology Co ltd
Priority date: 2023-05-18
Filing date: 2023-05-18
Publication date: 2023-12-05
Anticipated expiration: 2033-05-18

Abstract

The present disclosure relates to a gas collection system capable of achieving rapid adjustment of gas pressure and liquid level balance control for hydrogen production by electrolysis of water, the gas collection system comprising a hydrogen separator, an oxygen separator and a monitoring device. The hydrogen separator is provided with a plurality of first exhaust structures with adjustable exhaust gas amounts, the oxygen separator is provided with a second exhaust structure with adjustable exhaust gas amounts, the monitoring device is used for respectively monitoring the gas pressures in the oxygen separator and the hydrogen separator, and the first exhaust structure and/or the second exhaust structure can adjust the exhaust gas amounts according to the monitored gas pressures. Through the technical scheme, the large exhaust amount of the first exhaust structures can enable excessive hydrogen to be discharged rapidly, so that electrolyte liquid levels in the cathode region and the anode region can be balanced, the gas production efficiency of the electrolytic tank can be recovered rapidly, and the influence on the electrolytic efficiency of the electrolytic tank is reduced.

Description

Gas collecting system capable of realizing rapid adjustment of gas pressure and liquid level balance control

Technical Field

The present disclosure relates to the field of hydrogen production by water electrolysis, and in particular, to a gas collecting system capable of achieving rapid adjustment of gas pressure and liquid level balance control.

Background

The hydrogen production by water electrolysis is to electrolyze the electrolyte in the electrolytic tank to generate hydrogen and oxygen under the condition that a certain gas pressure exists in the electrolytic tank, and the electrolytic tank is provided with a plurality of electrolysis cells, wherein each electrolysis cell is divided into a cathode region capable of generating hydrogen and an anode region capable of generating oxygen by a diaphragm. In theory, the output of hydrogen is twice that of oxygen, and the high output of hydrogen may cause the imbalance of the gas pressure in the cathode region and the anode region to cause gas cross. In order to avoid the above, in the related art, an exhaust structure for exhausting excessive hydrogen is provided on an existing gas collecting system for collecting hydrogen and oxygen. However, when the output efficiency of the gas in the electrolytic tank rises or drops too fast, that is, when the output efficiency of the gas fluctuates, the existing gas collecting system is difficult to quickly respond, excessive hydrogen cannot be quickly discharged, and when excessive hydrogen cannot be quickly discharged, in order to avoid gas cross connection, the output efficiency of the gas needs to be reduced, so that the electrolytic efficiency of the electrolytic tank is affected.

Disclosure of Invention

It is an object of the present disclosure to provide a gas collecting system capable of achieving rapid adjustment of gas pressure and liquid level balance control, to at least partially solve the problems existing in the related art.

A first object of the present disclosure is to provide a gas collecting system capable of achieving rapid adjustment of gas pressure and balance control of liquid level for hydrogen production by electrolysis of water, the gas collecting system comprising:

a plurality of first exhaust structures with adjustable exhaust gas amounts are arranged on the hydrogen separator;

an oxygen separator, on which a second exhaust structure with adjustable exhaust gas amount is provided;

monitoring means for monitoring the gas pressure within the oxygen separator and the hydrogen separator, respectively; the first exhaust structure and/or the second exhaust structure are capable of adjusting an exhaust gas amount based on the monitored gas pressure.

Optionally, the first exhaust structure is a first exhaust pipe, and a first valve is disposed on the first exhaust pipe.

Optionally, a plurality of said first exhaust pipes have different nominal diameters.

Optionally, the nominal diameter of the first exhaust pipe is 15mm-65mm.

Optionally, the second exhaust structure is a second exhaust pipe, and a second valve with adjustable opening is arranged on the second exhaust pipe.

Optionally, the first valve and the second valve are one of a pneumatic membrane regulator valve, a piston pneumatic valve, an electric regulator valve, and a hydraulic regulator valve.

Optionally, the first exhaust pipes are provided with three exhaust pipes, the nominal diameter of the first exhaust pipe is 15mm-30mm, the nominal diameter of the second exhaust pipe is 31mm-45mm, and the nominal diameter of the third exhaust pipe is 46mm-65mm.

Optionally, the monitoring device comprises a pressure sensor disposed at least within the oxygen separator.

Optionally, the monitoring device further comprises a liquid level sensor arranged in at least one of the hydrogen separator and the oxygen separator, the gas collecting system further comprises a first communication pipeline, two ends of the first communication pipeline are respectively communicated with the hydrogen separator and the oxygen separator, and electrolyte in the hydrogen separator is communicated with electrolyte in the oxygen separator through the first communication pipeline.

Optionally, the gas collecting system further comprises an electrolytic tank, a hydrogen discharging port for discharging electrolyte and hydrogen and an oxygen discharging port for discharging electrolyte and oxygen are arranged on the electrolytic tank, the hydrogen separator is communicated with the hydrogen discharging port, the oxygen separator is communicated with the oxygen discharging port, the gas collecting system further comprises a three-way pipe, a first pipe section of the three-way pipe is communicated with the hydrogen separator, a second pipe section of the three-way pipe is communicated with the oxygen separator, and a third pipe section of the three-way pipe is communicated with the electrolytic tank.

Through the technical scheme, the hydrogen separator is used for being communicated with the cathode area in the electrolytic tank, and the oxygen separator is used for being communicated with the anode area in the electrolytic tank. According to the gas pressure data of the hydrogen separator and the oxygen separator obtained by the monitoring device, when the output efficiency of gas in the electrolytic tank rises or drops too fast, namely, when the output efficiency of gas fluctuates, the gas pressure in the electrolytic tank also can be abnormal, at the moment, the monitoring device can detect the abnormality and adjust the exhaust quantity of the first exhaust structure and the second exhaust structure, and because the first exhaust structure is provided with a plurality of first exhaust structures, the excessive hydrogen can be quickly discharged by the large exhaust quantity of the plurality of first exhaust structures, the electrolyte liquid levels in the cathode area and the anode area can be balanced, the output efficiency of gas in the electrolytic tank can be quickly recovered, and the influence on the electrolytic efficiency of the electrolytic tank is reduced.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

fig. 1 is a schematic illustration of the use of a gas collection system provided in an exemplary embodiment of the present disclosure.

Description of the reference numerals

1-hydrogen separator, 11-first exhaust structure, 12-first exhaust pipe, 13-first valve, 2-oxygen separator, 21-second exhaust structure, 22-second exhaust pipe, 23-second valve, 3-monitoring device, 31-pressure sensor, 32-liquid level sensor, 4-first communication pipeline, 5-three-way pipe, 51-first pipe section, 52-second pipe section, 53-third pipe section, 54-cooling device, 6-electrolytic cell, 61-hydrogen discharge port, 62-oxygen discharge port.

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

In this disclosure, unless otherwise indicated, the term "orientation" is used to generally refer to the orientation of the relevant components in the actual state of use. "inner and outer" may refer to the inner and outer of the contour of the corresponding component or to the interior or exterior of the environment in which it is located, depending on the particular context. In addition, when the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements unless otherwise indicated. The terms "first," "second," and the like, as used in this disclosure, are used for distinguishing one element from another and not necessarily for order or importance.

As shown in fig. 1, the present disclosure provides a gas collecting system capable of realizing rapid adjustment of gas pressure and liquid level balance control for hydrogen production by water electrolysis, the gas collecting system comprising a hydrogen separator 1, an oxygen separator 2 and a monitoring device 3. The hydrogen separator 1 is provided with a plurality of first exhaust structures 11 with adjustable exhaust gas amounts, the oxygen separator 2 is provided with a second exhaust structure 21 with adjustable exhaust gas amounts, the monitoring device 3 is used for respectively monitoring the gas pressures in the oxygen separator 2 and the hydrogen separator 1, and the first exhaust structure 11 and/or the second exhaust structure 21 can adjust the exhaust gas amounts according to the monitored gas pressures.

When the water is electrolyzed to produce hydrogen, the electrolytic tank 6 needs to exert the optimal electrolysis effect under a certain working pressure, so that the output efficiency of hydrogen and oxygen is ensured, in theory, the output of hydrogen is twice that of oxygen, namely, the output of oxygen is small, therefore, the working pressure of the electrolytic tank 6 needs to be determined by the gas pressure of an anode region, if the working pressure of the electrolytic tank is determined by the gas pressure of a cathode region, because the output of hydrogen is large, when the gas pressure of the cathode region reaches the working pressure of the electrolytic tank 6, the gas pressure of the anode region does not reach the working pressure of the electrolytic tank 6 yet, the gas pressures of the cathode region and the anode region are difficult to stabilize, and the electrolyte liquid levels in the cathode region and the anode region are also difficult to balance. The gas collecting system can be respectively communicated with the cathode region for generating hydrogen and the anode region for generating oxygen, when the output efficiency of the gas fluctuates, the gas pressure inside the electrolytic tank 6 is abnormal, and at the moment, the gas pressure of the cathode region and the anode region can be regulated through the gas collecting system, so that excessive hydrogen is rapidly discharged to ensure the working pressure of the electrolytic tank 6. Meanwhile, when hydrogen and oxygen are discharged from the electrolytic tank 6, a large amount of electrolyte is carried out, and thus the gas collecting system needs to be provided with the hydrogen separator 1 and the oxygen separator 2 for separating gas from electrolyte.

By the above-described solution, the hydrogen separator 1 is adapted to communicate with the cathode region in the electrolytic cell 6 and the oxygen separator 2 is adapted to communicate with the anode region in the electrolytic cell 6. According to the gas pressure data of the hydrogen separator 1 and the oxygen separator 2 obtained by the monitoring device 3, when the output efficiency of the gas in the electrolytic tank 6 rises or drops too fast, that is, when the output efficiency of the gas fluctuates, the gas pressure in the electrolytic tank 6 also can be abnormal, at this time, the monitoring device 3 can detect the abnormality and adjust the exhaust volumes of the first exhaust structure 11 and the second exhaust structure 21, and since the first exhaust structure 11 has a plurality of first exhaust structures 11, the larger exhaust volumes of the plurality of first exhaust structures 11 can enable excessive hydrogen to be discharged quickly, so that the excessive hydrogen is prevented from accumulating in the electrolytic tank 6 to cause gas cross-connection, the output efficiency of the gas in the electrolytic tank 6 can be recovered quickly, and the influence on the electrolytic efficiency of the electrolytic tank 6 is reduced.

During the actual use of the electrolytic tank 6, various conditions are encountered which lead to fluctuation in the gas production efficiency of the electrolytic tank 6, and at this time, excessive hydrogen can be rapidly discharged through the gas collecting system.

For example: when the electrolyzer 6 is just started, the gas output efficiency in the electrolyzer 6 is low, the electrolyzer 6 does not reach the working pressure yet, in order to enable the electrolyzer 6 to reach the working pressure, when the monitoring device 3 monitors that the gas pressure in the oxygen separator 2 is smaller than the working pressure of the electrolyzer 6, the exhaust gas amount of the second exhaust structure 21 can be reduced, the gas pressure in the oxygen separator 2 is increased, and the gas pressure in the anode region is gradually increased until the working pressure of the electrolyzer 6 is reached. When the gas pressure in the anode region is gradually increased, because the yield of hydrogen is large and the yield efficiency of hydrogen is rapidly increased along with the increase of the gas pressure, the gas pressure in the hydrogen separator 1 reaches the working pressure of the electrolytic tank 6 first, and when the pressure sensor 31 monitors that the gas pressure in the hydrogen separator 1 is greater than the working pressure of the electrolytic tank 6, the exhaust amount of the first exhaust structure 11 needs to be increased to rapidly exhaust excessive hydrogen, so that the gas pressure in the hydrogen separator can be stabilized and the yield efficiency of the gas can be rapidly recovered. In the process of starting the electrolytic tank 6 until the electrolytic tank 6 reaches the working pressure, the monitoring device 3 and the first exhaust structure 11 and the second exhaust structure 21 with adjustable exhaust amounts can shorten the time required for starting the electrolytic tank 6 until the electrolytic tank 6 reaches the working pressure, and improve the use efficiency of the electrolytic tank 6. If the monitoring device 3 and the first exhaust structure 11 and the second exhaust structure 21 with adjustable exhaust gas amounts are not provided, after the gas pressure in the hydrogen separator 1 reaches the working pressure of the electrolytic tank 6, excessive hydrogen cannot be discharged in time, so that in order to avoid the excessive gas pressure in the hydrogen separator 1, the gas production efficiency needs to be controlled, the gas production efficiency needs to be reduced, and the time required for starting the electrolytic tank 6 until the electrolytic tank 6 reaches the working pressure is excessively long.

In addition, when the renewable energy source is adopted to power the electrolytic tank to electrolyze water to produce hydrogen, the fluctuation of the gas pressure in the electrolytic tank 6 is also caused, the renewable energy source can be wind energy or solar energy, and the renewable energy source such as solar energy or wind energy has intermittence, periodicity and territory, and the fluctuation of the gas pressure in the electrolytic tank 6 is caused after the power fluctuation occurs during power supply.

For example: when the power of energy supply suddenly reduces, the output efficiency of hydrogen and oxygen can suddenly drop, and the fluctuation appears in the output efficiency of gas, can reduce the displacement of a plurality of first exhaust structures 11 and second exhaust structure 21 respectively this moment, and the discharge of control hydrogen and oxygen for the inside gas pressure of electrolysis trough can resume operating pressure fast, and the output efficiency of gas also can resume fast, reduces the influence to the electrolysis efficiency of electrolysis trough 6.

The first exhaust structure 11 may be a first exhaust pipe 12, and a first valve 13 may be disposed on the first exhaust pipe 12. The first valve 13 can control the on-off of the first exhaust pipe 12, and the exhaust amount of the first exhaust structure 11 can be adjusted by adjusting the number of the first exhaust pipes 12 capable of exhausting. Meanwhile, the first exhaust pipe 12 has a plurality, and referring to fig. 1, when the gas pressure in the cathode region needs to be reduced, the gas pressure in the hydrogen separator 1 can be reduced, and at this time, the number of the opened first valves 13 can be increased to increase the exhaust amount of the first exhaust structure 11, and the gas pressure in the hydrogen separator 1 is reduced, so that the gas pressure in the cathode region is reduced. When the gas pressure in the cathode region needs to be increased, the gas pressure in the hydrogen separator 1 may be increased, and at this time, the number of the first valves 13 opened may be reduced to reduce the displacement of the first exhaust structure 11, and the gas pressure in the hydrogen separator 1 is increased, so that the gas pressure in the cathode region is increased.

The plurality of first exhaust pipes 12 may have different nominal diameters. Correspondingly, the size of the first valve 13 can also be adjusted according to the nominal diameter of the first exhaust pipe 12, so that the first exhaust pipes 12 with different nominal diameters can be combined with each other, the control accuracy of the exhaust amount of the first exhaust structure 11 can be higher, and the range of the controllable exhaust amount can be larger.

The nominal diameter of the first exhaust pipe 12 may be 15mm-65mm. If the nominal diameter of the first exhaust pipe 12 is too small, the first exhaust structure 11 can perform a relatively limited adjustment. When the nominal diameter of the first exhaust pipe 12 is excessively large, the control accuracy of the first exhaust structure 11 is affected. In some embodiments, referring specifically to FIG. 1, the first exhaust pipe 12 may be provided with three, the first exhaust pipe 12 may have a nominal diameter of 15mm-30mm, the second exhaust pipe 12 may have a nominal diameter of 31mm-45mm, and the third exhaust pipe 12 may have a nominal diameter of 46mm-65mm. In some other embodiments, the number and nominal diameter of the first exhaust pipes 12 may be designed according to the actual operating requirements of the electrolytic cell, and the disclosure is not particularly limited.

The second exhaust structure 21 may be a second exhaust pipe 22, and a second valve 23 with an adjustable opening is disposed on the second exhaust pipe 22. So that the exhaust amount of the second exhaust pipe 22 can be controlled according to the opening degree of the second valve 23. Taking the second exhaust structure 21 as an example of the second exhaust pipe 22, referring specifically to fig. 1, when the gas pressure in the anode region needs to be reduced, the gas pressure in the oxygen separator 2 may be reduced, at this time, the opening of the second valve 23 may be increased, the exhaust amount of the second exhaust structure 21 is increased, and the gas pressure in the oxygen separator 2 is reduced, so that the gas pressure in the anode region is reduced. When the gas pressure in the anode region needs to be increased, the gas pressure in the oxygen separator 2 may be increased, at which time the opening of the second valve 23 may be decreased, the exhaust gas amount of the second exhaust structure 21 is decreased, and the gas pressure in the oxygen separator 2 is increased, so that the gas pressure in the anode region is increased.

In some embodiments, the first valve 13 and the second valve 23 may be one of a pneumatic membrane regulator valve, a piston pneumatic valve, an electric regulator valve, and a hydraulic regulator valve. Thus, the opening degree of the first valve 13 and the second valve 23 can be adjusted, and the use effect of the first valve 13 and the second valve 23 is met.

In some embodiments, the monitoring device 3 may comprise a pressure sensor 31 provided at least within the oxygen separator 2. The pressure sensor 31 is provided in the oxygen separator 2 to monitor the gas pressure in the oxygen separator 2, and since the amount of oxygen produced is small, the operating pressure of the electrolytic cell 6 can be determined from the gas pressure in the oxygen separator 2. In order to ensure that the gas pressure in the cathode region and the anode region is stable, the gas pressure in the hydrogen separator 1 is required to be monitored, a pressure sensor 31 can be arranged in the hydrogen separator 1 at the moment, the gas pressure data monitored by the two pressure sensors 31 are used for controlling the exhaust amount of the exhaust structure, the phenomenon that excessive hydrogen is accumulated in the electrolytic tank 6 to cause gas cross connection is avoided, the electrolyte liquid levels in the cathode region and the anode region can be balanced, the gas output efficiency of the electrolytic tank 6 can be quickly recovered, and the influence on the electrolytic efficiency of the electrolytic tank 6 is reduced.

In some other embodiments, the monitoring device 3 may further include a liquid level sensor 32 disposed in at least one of the hydrogen separator 1 and the oxygen separator 2, and the gas collecting system further includes a first communication pipe 4, both ends of the first communication pipe 4 being respectively communicated with the hydrogen separator 1 and the oxygen separator 2, and the electrolyte in the hydrogen separator 1 being communicated with the electrolyte in the oxygen separator 2 through the first communication pipe 4. Thus, when the gas pressure of the separator changes, the liquid level of the electrolyte also changes, the liquid level sensor 32 can monitor fluctuation of the liquid level change of the electrolyte, and when the fluctuation of the liquid level of the electrolyte exceeds a preset value, the exhaust gas quantity of the exhaust structure can be adjusted. I.e. the monitoring of the gas pressure in the hydrogen separator 1 can also be achieved by means of the level sensor 32 and the first communication line 4. For example, when the gas pressure in the hydrogen separator 1 is greater than the operating pressure of the electrolytic tank 6, the electrolyte in the hydrogen separator 1 is circulated to the oxygen separator 2 through the first communication pipeline 4, so that the liquid level of the electrolyte in the hydrogen separator 1 is reduced, and the liquid level of the electrolyte in the oxygen separator 2 is increased, and at this time, the exhaust gas amount of the first exhaust system can be increased, and the gas pressure stability of the cathode region and the anode region is ensured.

The gas collecting system may further include an electrolytic tank 6, a hydrogen discharge port 61 for discharging the electrolyte and the hydrogen and an oxygen discharge port 62 for discharging the electrolyte and the oxygen are provided on the electrolytic tank 6, the hydrogen separator 1 is communicated with the hydrogen discharge port 61, the oxygen separator 2 is communicated with the oxygen discharge port 62, the gas collecting system may further include a three-way pipe 5, a first pipe section 51 of the three-way pipe 5 is communicated with the hydrogen separator 1, a second pipe section 52 of the three-way pipe 5 is communicated with the oxygen separator 2, and a third pipe section 53 of the three-way pipe 5 is communicated with the electrolytic tank 6. The hydrogen separator 1 can communicate with the cathode region that generates hydrogen through the hydrogen discharge port 61, and the oxygen separator 2 can communicate with the anode region that generates oxygen through the oxygen discharge port 62, so that the gas collecting system can adjust the gas pressures of the cathode region and the anode region, and can ensure the operating pressure of the electrolytic cell 6. The three-way pipe 5 can reflux the electrolyte in the hydrogen separator 1 and the oxygen separator 2 into the electrolytic tank 6, so that the waste of the electrolyte is avoided, and meanwhile, the too high electrolyte level in the hydrogen separator 1 and the oxygen separator 2 can be avoided.

Because the water in the electrolytic tank 6 is continuously consumed when the water is electrolyzed to produce hydrogen, along with the consumption of the water, the concentration of the electrolyte in the electrolytic tank 6 is increased to influence the operation of producing hydrogen by the water electrolysis, at the moment, the water supplementing device is respectively communicated with the hydrogen separator 1 and the oxygen separator 2, so that the water and the electrolyte can flow back into the electrolytic tank 6 from the three-way pipe 5, and the concentration of the electrolyte in the electrolytic tank 6 is prevented from being too high. When the monitoring device 3 comprises a liquid level sensor 32 provided in at least one of the hydrogen separator 1 and the oxygen separator 2 and the gas collecting system further comprises a first communication line 4, the monitoring device 3 is also capable of enabling the gas collecting system to overcome pressure variations inside the electrolysis cell 6 due to water replenishment. For example, when the water replenishment in the hydrogen separator 1 is excessive, the electrolyte level in the hydrogen separator 1 increases, the gas pressure in the hydrogen separator also becomes abnormal, the gas production efficiency fluctuates, and since the electrolyte in the hydrogen separator 1 is communicated with the electrolyte in the oxygen separator 2 through the first communication line 4, the liquid level in the oxygen separator 2 also increases, and when the fluctuation of the electrolyte levels in the hydrogen separator 1 and the oxygen separator 2 exceeds a preset value, the abnormality of the gas pressure in the electrolytic tank 6 caused by the electrolyte level imbalance can be avoided by adjusting the exhaust gas amount of the exhaust structure.

The third pipe section 53 may be provided with cooling means 54 for cooling the electrolyte. The third pipe section 53 is communicated with the electrolytic tank 6, the electrolyte flowing back from the hydrogen separator 1 and the oxygen separator 2 is converged in the third pipe section 53, the electrolyte in the electrolytic tank 6 needs to be maintained at a certain temperature when the electrolyte flows back to the electrolytic tank 6 through the third pipe section 53 for producing hydrogen by electrolyzing water, but the temperature of the electrolyte flowing back to the electrolytic tank 6 from the separator is higher, so a cooling device 54 can be arranged on the third pipe section 53, the electrolyte cooled through the cooling device 54 flows back to the electrolytic tank 6 again, and the interference of the flowing back electrolyte on the hydrogen production operation of the electrolytic water of the electrolytic tank 6 due to the higher temperature is avoided. The cooling device 54 may use a heat exchange principle to reduce the temperature of the electrolyte, and the cooling device 54 may be a liquid pipe capable of exchanging heat with the third pipe section 53, and a cooling liquid may be disposed in the liquid pipe to reduce the temperature of the electrolyte.

The electrolytic tank 6 may be provided in plural, and the hydrogen separator 1 communicates with plural hydrogen discharge ports 61 at the same time, and the oxygen separator 2 communicates with plural oxygen discharge ports 62 at the same time. The gas collecting system is capable of simultaneously regulating the gas pressure in the cathode and anode areas of a plurality of cells 6 and ensuring the operating pressure of the cells 6. The plurality of electrolytic cells 6 share one gas collecting system, so that the cost is saved, and the installation space is saved during installation. The plurality of electrolytic tanks 6 can perform the water electrolysis hydrogen production operation under the same operation environment, so that the fluctuation generated by the plurality of electrolytic tanks 6 when the water electrolysis hydrogen production is performed is the same, and the mutual influence of the plurality of electrolytic tanks 6 when the water electrolysis hydrogen production is performed is avoided.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims

1. A gas collecting system capable of realizing rapid adjustment of gas pressure and liquid level balance control, which is used for producing hydrogen by electrolyzing water, and is characterized in that the gas collecting system comprises:

monitoring means for monitoring the gas pressure within the oxygen separator and the hydrogen separator, respectively; the first exhaust structure and/or the second exhaust structure can adjust the exhaust amount according to the monitored gas pressure; the first exhaust structure is a first exhaust pipe, a first valve is arranged on the first exhaust pipe, and a plurality of first exhaust pipes are provided with different nominal diameters.

2. The gas collecting system capable of realizing rapid adjustment of gas pressure and liquid level balance control according to claim 1, wherein the nominal diameter of the first exhaust pipe is 15mm-65mm.

3. The gas collecting system capable of realizing rapid adjustment of gas pressure and liquid level balance control according to claim 1, wherein the second exhaust structure is a second exhaust pipe, and a second valve with adjustable opening is arranged on the second exhaust pipe.

4. The gas collecting system capable of achieving rapid adjustment of gas pressure and liquid level balance control according to claim 3, wherein the first valve and the second valve are one of a pneumatic film adjusting valve, a piston type pneumatic valve, an electric adjusting valve and a hydraulic adjusting valve.

5. The gas collecting system capable of realizing rapid adjustment of gas pressure and liquid level balance control according to claim 1, wherein three first exhaust pipes are arranged, the nominal diameter of the first exhaust pipe is 15mm-30mm, the nominal diameter of the second exhaust pipe is 31mm-45mm, and the nominal diameter of the third exhaust pipe is 46mm-65mm.

6. The gas collection system capable of rapid gas pressure regulation and liquid level balance control of claim 1, wherein the monitoring device comprises a pressure sensor disposed at least within the oxygen separator.

7. The gas collecting system for enabling rapid adjustment of gas pressure and control of liquid level balance according to claim 6, wherein said monitoring device further comprises a liquid level sensor provided in at least one of said hydrogen separator and said oxygen separator, said gas collecting system further comprising a first communication pipe, both ends of said first communication pipe being respectively in communication with said hydrogen separator and said oxygen separator, and an electrolyte in said hydrogen separator being in communication with an electrolyte in said oxygen separator through said first communication pipe.

8. The gas collecting system capable of realizing rapid adjustment of gas pressure and liquid level balance control according to claim 1, further comprising an electrolytic tank, wherein a hydrogen discharging port for discharging electrolyte and hydrogen and an oxygen discharging port for discharging electrolyte and oxygen are arranged on the electrolytic tank, the hydrogen separator is communicated with the hydrogen discharging port, the oxygen separator is communicated with the oxygen discharging port, the gas collecting system further comprises a three-way pipe, a first pipe section of the three-way pipe is communicated with the hydrogen separator, a second pipe section of the three-way pipe is communicated with the oxygen separator, and a third pipe section of the three-way pipe is communicated with the electrolytic tank.