CN116397266A - Water supplementing method and device for hydrogen production system, electronic equipment and storage medium - Google Patents

Abstract

The present invention provides a hydrogen production system water supply method, device, electronic equipment and storage medium. The method includes: obtaining the current hydrogen production water supply information of the hydrogen production system within a preset time span. The hydrogen production water supply information includes the hydrogen production system real-time At least one of the hydrogen production amount and real-time electrical parameters; calculate the water replenishment amount of the hydrogen production system based on the current hydrogen production water replenishment information; use the metering pump to perform the water replenishment operation on the hydrogen production system based on the water replenishment amount. In this scheme, the hydrogen production system is replenished with water based on the calculated water replenishment amount of the hydrogen production system through the metering pump, so that in the same time span, the hydrogen production system is dynamically replenished in time according to the known water replenishment amount , and the temperature and concentration of the electrolyte are less affected during the water replenishment process, which improves the performance of the hydrogen production system.

Description

Hydrogen production system replenishment method, device, electronic equipment and storage medium

technical field

The invention relates to the technical field of hydrogen production, in particular to a method, device, electronic equipment and storage medium for replenishing water in a hydrogen production system.

Background technique

In the process of water electrolysis hydrogen production, whether it is alkaline water electrolysis hydrogen production system (ALK) or proton exchange membrane water electrolysis hydrogen production system (PEM), only water is consumed and no other substances are consumed. Therefore, during the operation of the system, water must be replenished in the system in time, otherwise the system will not operate normally.

In the related art, the usual method of replenishing water is to control the start and stop of the replenishing water pump according to the upper and lower limits of the liquid level in the gas-liquid separation device. However, the water replenishment amount of this method is unknown each time, and due to the difference in the gas content in the electrolyte, there will be a certain "false liquid level". Temperature and concentration fluctuate greatly.

Therefore, how to replenish water to the hydrogen production system to reduce the impact on the temperature and concentration of the electrolyte during the water replenishment process and improve the performance of the hydrogen production system has become an urgent technical problem to be solved by those skilled in the art.

Contents of the invention

In view of this, an embodiment of the present invention provides a method, device, electronic device, and storage medium for replenishing water in a hydrogen production system, so as to replenish the hydrogen production system according to the calculated water replenishment amount required within a preset time span, thereby reducing the The impact on the temperature and concentration of the electrolyte during the water replenishment process improves the performance of the hydrogen production system.

In order to achieve the above purpose, embodiments of the present invention provide the following technical solutions:

The first aspect of the embodiments of the present invention discloses a method for replenishing water in a hydrogen production system, the method comprising:

Within a preset time span, obtain current hydrogen production and water replenishment information of the hydrogen production system, where the hydrogen production and water replenishment information includes at least one of real-time hydrogen production and real-time electrical parameters of the hydrogen production system;

calculating the water replenishment amount of the hydrogen production system based on the current hydrogen production water replenishment information;

A metering pump is used to perform a water replenishment operation on the hydrogen production system based on the water replenishment amount.

Optionally, the calculating the water replenishment amount of the hydrogen production system based on the current hydrogen production water replenishment information includes:

The water replenishment amount of the hydrogen production system is calculated according to the preset first water replenishment amount calculation formula and the real-time hydrogen production amount.

Optionally, the calculating the water replenishment amount of the hydrogen production system based on the current hydrogen production water replenishment information includes:

The water replenishment amount of the hydrogen production system is calculated according to a preset second water replenishment amount calculation formula and the real-time electrical parameter, wherein the real-time electrical parameter is real-time power.

Optionally, using a metering pump to perform a water replenishment operation on the hydrogen production system based on the water replenishment amount includes:

Adjusting the output flow of the metering pump based on the replenishment amount;

According to the output flow rate, the hydrogen production system is supplemented with water by the metering pump, and the actual supplementary water volume of the hydrogen production system is controlled to be within the range of the supplementary water volume by the controller.

Optionally, the adjusting the output flow of the metering pump based on the water replenishment amount includes:

Based on the water replenishment amount, the plunger stroke length of the metering pump is changed to obtain the output flow of the metering pump.

Optionally, the adjusting the output flow of the metering pump based on the water replenishment amount includes:

Using a frequency converter to change the input power frequency of the metering pump based on the water replenishment amount;

adjusting the pump speed of the metering pump according to the input power frequency;

Based on the pump speed of the metering pump, the output flow of the metering pump is obtained.

Optionally, the adjusting the output flow of the metering pump based on the water replenishment amount includes:

Based on the amount of replenished water, the stroke length of the plunger and the frequency of the input power supply are changed to obtain the output flow of the metering pump.

Optionally, if the controller includes a PID calculator and a metering pump controller, then according to the output flow, the hydrogen production system is supplemented with water through the metering pump, and the controller The actual water replenishment of the hydrogen production system is controlled within the range of the stated water replenishment, including:

Sending the difference between the water replenishment amount and the actual water replenishment amount of the hydrogen production system to the PID calculator;

The PID arithmetic unit receives the difference, performs calculation processing on the difference, obtains the processed water replenishment amount, and sends the processed water replenishment amount to the metering pump controller;

The metering pump controller obtains the output flow according to the received treated water replenishment amount, and controls the metering pump to replenish water to the hydrogen production system according to the output flow, so that the actual hydrogen production system The amount of water replenishment is controlled to within the range of the amount of water replenishment.

Optionally, after controlling the metering pump to replenish water to the hydrogen production system according to the output flow rate, the method further includes:

The actual water replenishment amount of the hydrogen production system is fed back in real time, and the difference is updated according to the fed back actual water replenishment amount of the hydrogen production system.

The second aspect of the embodiment of the present invention discloses a hydrogen production system water supply device, the device includes:

An acquisition module, configured to acquire current hydrogen production and water replenishment information of the hydrogen production system within a preset time span, where the hydrogen production and water replenishment information includes at least one of the real-time hydrogen production and real-time electrical parameters of the hydrogen production system;

A calculation module, configured to calculate the water replenishment amount of the hydrogen production system based on the current hydrogen production water replenishment information;

The water replenishment module is used to perform water replenishment operation on the hydrogen production system based on the replenishment water amount by using a metering pump.

The third aspect of the embodiment of the present invention discloses an electronic device, the electronic device is used to run the program, wherein, when the running program is running, the hydrogen production system replenishment according to any one of the first aspect of the embodiment of the present invention is executed method.

The fourth aspect of the embodiment of the present invention discloses a computer storage medium, the storage medium includes a stored program, wherein, when the stored program is running, the device where the storage medium is located is controlled to execute any one of the following aspects of the first aspect of the embodiment of the present invention The water replenishment method for the hydrogen production system described in the item.

Based on the method, device, electronic equipment, and storage medium for replenishing water in a hydrogen production system provided by the above-mentioned embodiments of the present invention, the method includes: within a preset time span, obtaining the current hydrogen production water replenishment information of the hydrogen production system, the system The hydrogen replenishment information includes at least one of the real-time hydrogen production and real-time electrical parameters of the hydrogen production system; calculate the replenishment amount of the hydrogen production system based on the current hydrogen generation replenishment information; use a metering pump to calculate the replenishment amount based on the water replenishment amount , performing a water replenishment operation on the hydrogen production system. In this scheme, the metering pump performs the water replenishment operation on the hydrogen production system based on the calculated water replenishment amount required by the hydrogen production system, so that in the same time span, it can be based on the known water replenishment amount, that is, according to the hydrogen production system Timely and dynamically replenish water to the hydrogen production system to keep the total water volume in the hydrogen production system basically unchanged. When the time span is small, it can also maintain the liquid level in the hydrogen production system at various times. , so as to ensure that the concentration and temperature of the electrolyte remain basically unchanged during the water replenishment process, so as to reduce the impact on the electrolyte and improve the performance of the hydrogen production system.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is a schematic flow chart of a method for replenishing water in a hydrogen production system provided by an embodiment of the present invention;

Fig. 2 is a schematic flow diagram of a water replenishment operation for the hydrogen production system based on the water replenishment amount provided by a metering pump according to an embodiment of the present invention;

Fig. 3 is a schematic flow chart of controlling the actual water replenishment volume of the hydrogen production system to within the water replenishment volume range provided by the embodiment of the present invention;

Fig. 4 is a functional block diagram of a PID controller provided by an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of a water supply device for a hydrogen production system provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In this application, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes none. other elements specifically listed, or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

It can be seen from the background technology that the amount of water replenishment in the existing water replenishment method is unknown, which will easily lead to fluctuations in the total water volume in the hydrogen production system, resulting in large fluctuations in the temperature and concentration of the electrolyte, affecting the performance of the hydrogen production system.

Therefore, an embodiment of the present invention provides a method, device, electronic equipment, and storage medium for replenishing water in a hydrogen production system. In this solution, the metering pump performs a water replenishment operation on the hydrogen production system based on the calculated water replenishment amount required by the hydrogen production system , so that in the same time span, the hydrogen production system can be replenished dynamically in a timely manner according to the known water supply volume, that is, according to the water consumption of the hydrogen production system, so as to maintain the total water volume in the hydrogen production system basically unchanged, When the time span is small, the liquid level in the hydrogen production system can also be kept basically unchanged at all times, so as to ensure that the concentration and temperature of the electrolyte during the water replenishment process remain basically unchanged, so as to reduce the impact on the electrolyte. Improve the performance of the hydrogen production system.

As shown in Figure 1, it is a schematic flow chart of a method for replenishing water in a hydrogen production system provided by an embodiment of the present invention. The method for replenishing water in a hydrogen production system mainly includes the following steps:

Step S101: within a preset time span, obtain the current hydrogen production water replenishment information of the hydrogen production system.

In step S101, the time span may be 1 hour or 2 hours, which is not limited in the present invention.

The hydrogen production water replenishment information includes at least one of the real-time hydrogen production and real-time electrical parameters of the hydrogen production system.

Wherein, the electrical parameters may be, for example, power, voltage, current, etc., which are not limited in the present invention.

The real-time hydrogen production is the amount of hydrogen produced by the hydrogen production system within a preset time span, that is, the hydrogen flow rate produced by the hydrogen production system within a preset time span, which is measured by a mass flowmeter.

It should be noted that since there is a certain correlation between the current of the hydrogen production system and the amount of hydrogen produced, the current data of the hydrogen production system can also be used to represent the hydrogen production of the hydrogen production system in practice.

Optionally, the hydrogen production water replenishment information may include the amount of water consumed by the hydrogen production system within a preset time span.

Optionally, the hydrogen production water replenishment information may also include the amount of oxygen produced by the hydrogen production system within a preset time span.

Optionally, the hydrogen production water replenishment information may include the electric energy consumed by the hydrogen production system within a preset time span.

In the process of implementing step S101, if the current time span is 1 hour, obtain the hydrogen production and water replenishment information of the hydrogen production system within an hour, and specifically obtain the real-time hydrogen production or real-time electrical parameters of the hydrogen production system within an hour .

Step S102: Calculate the water replenishment amount of the hydrogen production system based on the current water replenishment information for hydrogen production.

During the specific implementation of step S102, the real-time hydrogen production volume of the hydrogen production system can be used to calculate the water replenishment volume of the hydrogen production system.

It should be noted that, in the above calculation process, the water replenishment amount of the hydrogen production system can be calculated according to the preset calculation formula of the first water replenishment amount and the real-time hydrogen production amount.

Wherein, the formula for calculating the first water replenishment amount is generally preset. Specifically, the formula for calculating the first water replenishment amount is as follows:

Water replenishment (L/h) ≈ real-time hydrogen production (Nm3/h) * 0.9L/Nm3, (1);

Under standard conditions, every time the hydrogen production system produces 1Nm3 hydrogen and 0.5Nm3 oxygen, it needs to consume 804g of pure water in theory. In the actual production process, the consumption of pure water is higher, estimated at about 0.9L (this value can be Fumble in the actual debugging process).

After the real-time hydrogen production per hour of the hydrogen production system is measured by the mass flow meter, the real-time hydrogen production is imported into formula (1) to calculate the water replenishment required by the hydrogen production system.

Combining the above, assuming that the real-time hydrogen production per hour of the hydrogen production system measured by the mass flow meter is 50Nm3, and substituting 50 into the formula (1) for calculation, that is, 50*0.9=45, the required water replenishment volume of the hydrogen production system is 45L . It should be noted that this is only an exemplary description of calculating the water replenishment amount of the hydrogen production system based on the preset calculation formula of the first water replenishment amount and the real-time hydrogen production amount, and the specific calculation situation can also be determined according to the specific application environment and user needs , this application is not limited, all within the protection scope of this application.

In addition to the calculation methods shown above, in the process of implementing step S102, the real-time power of the hydrogen production system can also be used to calculate the water replenishment amount of the hydrogen production system.

It should be noted that, in the above calculation process, the water replenishment amount of the hydrogen production system can be calculated according to the preset second water replenishment amount calculation formula and real-time electrical parameters.

Wherein, the real-time electrical parameter is real-time power.

The real-time power is the power consumed by the hydrogen production system within a preset time span, which is obtained through the hydrogen production power supply.

The formula for calculating the second amount of replenished water is generally preset. Specifically, the formula for calculating the second water replenishment amount is as follows:

Water supply (L/h) ≈ real-time power/5kWh*1Nm3*0.9L/Nm3, (2);

Under standard conditions, every time the hydrogen production system produces 1Nm3 hydrogen and 0.5Nm3 oxygen, it needs to consume 2.94kWh of electric energy in theory. groping in the process).

After obtaining the real-time power of the hydrogen production system per hour through the hydrogen production power supply, the real-time power is imported into formula (2) to calculate the amount of water needed for the hydrogen production system.

Assuming that the real-time power per hour of the hydrogen production system obtained by the hydrogen production power supply is 200kWh, 200 is substituted into the formula (2) for calculation, that is, 200/5*1*0.9=36, and the water replenishment required by the hydrogen production system is 36L. It should be noted that this is only an exemplary description of calculating the water replenishment amount of the hydrogen production system according to the preset second water replenishment amount calculation formula and real-time power, and the specific calculation situation can also be determined according to the specific application environment and user needs. The application is not limited, and all are within the protection scope of the present application.

In some embodiments, the hydrogen production water replenishment information includes the amount of oxygen produced by the hydrogen production system within a preset time span, and accordingly, the water replenishment amount required by the hydrogen production system can be calculated according to the oxygen amount. Wherein, the specific process of calculating the water replenishment required by the hydrogen production system according to the amount of oxygen is the same as the above-mentioned principle, and only need to refer to each other, all of which are within the scope of protection of the present application.

In some embodiments, the hydrogen production water replenishment information includes the electric energy consumed by the hydrogen production system within a preset time span, and correspondingly, the amount of water replenishment required by the hydrogen production system can be calculated according to the electric energy. Wherein, the specific process of calculating the amount of supplementary water required by the hydrogen production system according to the electric energy is the same as the above principle, and it is enough to refer to each other, and both are within the scope of protection of the present application.

Step S103: Using the metering pump to replenish water to the hydrogen production system based on the amount of replenished water.

Optionally, the metering pump is a plunger metering pump. In practice, through design and selection, the metering pump required for the operation of the hydrogen production system can be matched.

It should be noted that the metering pump can be adjusted steplessly within the stroke range of 0 to 100% to meet the needs of different flow rates. Among them, within the adjustment range of 10%-100%, the flow stability accuracy can reach ±0.5%.

During the specific implementation of step S103, the hydrogen production system can be supplemented with water through the output flow of the metering pump.

It should be noted that the output flow of the metering pump can be adjusted according to the amount of water replenishment in the hydrogen production system, so that the water replenishment operation of the hydrogen production system can be performed quickly.

Optionally, in practical applications, the specific process of using the metering pump to replenish water to the hydrogen production system in step S103 based on the amount of replenished water can be shown in Figure 2, which mainly includes steps S201 to S202:

Step S201: Adjusting the output flow of the metering pump based on the amount of replenished water.

In the process of implementing step S201, if the hydrogen production system needs more replenishment water in the current time span, increase the output flow of the metering pump; if the hydrogen production system requires less replenishment water in the current time span, then Reduce the output flow of the metering pump.

It should be noted that, in the above process of adjusting the output flow of the metering pump, the stroke length of the plunger of the metering pump can be changed based on the amount of replenished water to obtain the output flow of the metering pump, so as to ensure that the metering pump is controlled by the metering pump in step S202. When the hydrogen system replenishes water, it can meet the water replenishment demand of the hydrogen production system.

Among them, the plunger is the diaphragm of the metering pump. In practice, the best relative stroke length of the metering pump is 30% to 100%. The plunger stroke length of the metering pump can be changed when the hydrogen production system is shut down or running, thereby adjusting the output flow of the metering pump.

It should also be noted that, in the process of adjusting the output flow rate of the metering pump, it is also possible to use a frequency converter to change the input power frequency of the metering pump based on the amount of water replenishment; then adjust the pump speed of the metering pump according to the frequency of the input power; finally, Based on the pump speed of the metering pump, the output flow of the metering pump is obtained.

In practical applications, intelligent stroke controllers, digital controllers, etc. can be installed in the hydrogen production system, so as to realize the automatic control and computer program of the metering pump flow adjustment when the hydrogen production system is supplemented by the metering pump in step S202 control.

It should also be noted that in the process of adjusting the output flow of the metering pump, the stroke length of the plunger and the frequency of the input power supply can be changed based on the amount of replenished water to obtain the output flow of the metering pump, so as to expand the effective adjustment range of the metering pump. In this way, it is ensured that when the metering pump is used to replenish water to the hydrogen production system in step S202, the demand for water replenishment of the hydrogen production system can be met.

Step S202: According to the output flow rate, the hydrogen production system is supplemented with water by the metering pump, and the actual water supply volume of the hydrogen production system is controlled to be within the range of the water supply volume through the controller.

In the process of implementing step S202, if the output flow of the metering pump is large, the metering pump can complete the replenishment of water to the hydrogen production system in a relatively short period of time. The actual amount of water replenishment is controlled within the range of the amount of water replenishment; if the output flow of the metering pump is small, the metering pump needs to complete the water replenishment to the hydrogen production system in a relatively long period of time. During the water replenishment process, the controller will control the hydrogen production system The actual amount of water replenishment is controlled within the range of the amount of water replenishment, and has little influence on the concentration and temperature of the electrolyte.

Optionally, if the controller includes a PID calculator and a metering pump controller, perform step S202 to replenish water to the hydrogen production system through the metering pump based on the output flow, and control the actual water replenishment amount of the hydrogen production system to the water replenishment amount through the controller. The process within the quantitative range, as shown in Figure 3, specifically includes the following steps:

Step S301: Send the difference between the water replenishment amount and the actual water replenishment amount of the hydrogen production system to the PID calculator.

In the process of implementing step S301, the water replenishment amount and the actual water replenishment amount of the hydrogen production system are subtracted to obtain the difference between the water replenishment amount and the actual water replenishment amount of the hydrogen production system, and the water replenishment amount and the actual water replenishment amount of the hydrogen production system The difference between the quantities is sent to the PID calculator.

Step S302: The PID calculator receives the difference, performs calculation processing on the difference, obtains the processed water replenishment amount, and sends the processed water replenishment amount to the metering pump controller.

In step S302, the metering pump controller may refer to a metering pump stroke controller, or may refer to a frequency converter, which is not limited in the present invention.

When the metering pump controller is a metering pump stroke controller, it can also directly open-loop control without the PID calculator and without feedback of the actual water replenishment amount, that is, directly convert the calculated water replenishment amount into a stroke percentage, and output it through the analog quantity Give the metering pump a stroke controller to control the metering pump, but if the metering pump controller is a frequency converter, a PID calculator must be required and the actual water replenishment amount must be fed back.

Step S303: The metering pump controller obtains the output flow rate according to the received treated water replenishment amount, and controls the metering pump to replenish water to the hydrogen production system according to the output flow rate, so as to control the actual water replenishment amount of the hydrogen production system within the range of the water replenishment amount.

In the process of implementing step S303, the metering pump controller receives the processed water replenishment amount, based on the processed water replenishment amount based on the output flow rate of the metering pump, and controls the metering pump to replenish water to the hydrogen production system according to the output flow rate. During the process, the actual water replenishment of the hydrogen production system is controlled within the water replenishment range, that is, the actual water replenishment of the hydrogen production system is controlled near the above calculated water replenishment, so as to complete the dynamic process of the hydrogen production system.

Optionally, after performing step S303 to control the metering pump to supplement the hydrogen production system according to the output flow rate, the method also includes:

Real-time feedback of the actual water replenishment amount of the hydrogen production system, and update the difference based on the actual water replenishment amount of the hydrogen production system fed back.

When the controller is a PID controller, as shown in Figure 4, it is a functional block diagram of a PID controller provided by the embodiment of the present invention, wherein the output terminal of the PID calculator is connected to the input terminal of the metering pump controller, and the metering The first output end of the pump controller is connected to the input end of the metering pump, and the second output end of the metering pump controller is connected to the input end of the PID calculator.

After calculating the water replenishment amount required by the hydrogen production system, calculate the difference between the water replenishment amount and the actual water replenishment amount of the hydrogen production system, and send the difference between the water replenishment amount and the actual water replenishment amount of the hydrogen production system to the PID calculator; Then, the PID calculator receives the difference, performs calculation processing on the difference, obtains the processed water replenishment amount, and sends the processed water replenishment amount to the metering pump controller; then, the metering pump controller The amount of replenishment water is obtained from the output flow rate of the metering pump, and the metering pump is controlled to replenish water to the hydrogen production system according to the output flow rate. Update the difference, and control the actual water replenishment of the hydrogen production system to within the range of the replenishment water.

In practical application, after starting the hydrogen production system several times, observe the liquid level of the first startup and the liquid level after the last shutdown for 12 hours, and calculate the liquid level of the first startup and the last shutdown. The liquid level difference between the liquid levels after 12 hours, the liquid level difference is the control effect of the actual water replenishment of the hydrogen production system during the process of water replenishment by the metering pump to the hydrogen production system according to the output flow of the metering pump; If the liquid level difference has a large deviation, the water replenishment amount of the hydrogen production system is corrected according to the liquid level difference, thereby adjusting the actual water replenishment amount of the hydrogen production system.

Based on the above description, it can be understood that when replenishing water in the dynamic process of the hydrogen production system, the amount of water consumed by the hydrogen production system or hydrogen production device per hour is the amount of water replenished to the hydrogen production system or hydrogen production device, and the time span is the same , therefore, the amount of water replenishment is known every time, and the concentration and temperature of the electrolyte are less affected during the replenishment process, which can improve the performance of the hydrogen production system.

Based on a hydrogen production system water supplement method provided by an embodiment of the present invention, the method obtains the current hydrogen production water supplement information of the hydrogen production system within a preset time span, and the hydrogen production water supplement information includes the real-time hydrogen production of the hydrogen production system and the real-time power At least one of the parameters; calculate the water replenishment amount of the hydrogen production system based on the current hydrogen production water replenishment information; use the metering pump to perform a water replenishment operation on the hydrogen production system based on the water replenishment amount. In this scheme, the metering pump performs the water replenishment operation on the hydrogen production system based on the calculated water replenishment amount required by the hydrogen production system, so that in the same time span, it can be based on the known water replenishment amount, that is, according to the hydrogen production system Timely and dynamically replenish water to the hydrogen production system to keep the total water volume in the hydrogen production system basically unchanged. When the time span is small, it can also maintain the liquid level in the hydrogen production system at various times. , so as to ensure that the concentration and temperature of the electrolyte remain basically unchanged during the water replenishment process, so as to reduce the impact on the electrolyte and improve the performance of the hydrogen production system.

Corresponding to the method for replenishing water in the hydrogen production system shown in FIG. 1 of the above-mentioned embodiment of the present invention, the embodiment of the present invention also provides a water replenishment device for the hydrogen production system. As shown in FIG. 5 , the device includes: an acquisition module 501 , a calculation module 502 and a water supply module 503.

The acquisition module 501 is configured to acquire current hydrogen production and water replenishment information of the hydrogen production system within a preset time span. The hydrogen production and water replenishment information includes at least one of real-time hydrogen production and real-time electrical parameters of the hydrogen production system.

Calculation module 502, configured to calculate the water replenishment amount of the hydrogen production system based on the current hydrogen production water replenishment information.

The water replenishment module 503 is configured to use a metering pump to replenish water to the hydrogen production system based on the amount of replenished water.

Optionally, based on the calculation module 502 shown in FIG. 5 above, the calculation module 502 is specifically used for:

Calculate the water replenishment amount of the hydrogen production system according to the preset formula for calculating the first water replenishment amount and the real-time hydrogen production amount.

Optionally, based on the calculation module 502 shown in FIG. 5 above, the calculation module 502 is also specifically configured to:

The water replenishment amount of the hydrogen production system is calculated according to the preset calculation formula of the second water replenishment amount and real-time electrical parameters, wherein the real-time electrical parameter is real-time power.

Optionally, based on the water replenishment module 503 shown in FIG. 5 above, the water replenishment module 503 includes:

The regulating unit is used for regulating the output flow of the metering pump based on the supplementary water amount.

The water supply unit is used to supply water to the hydrogen production system through the metering pump according to the output flow rate, and controls the actual water supply volume of the hydrogen production system to within the range of the water supply volume through the controller.

Optionally, based on the water supply module 503 shown in FIG. 5 above, the adjustment unit is specifically used for:

Based on the water replenishment amount, the plunger stroke length of the metering pump is changed to obtain the output flow of the metering pump.

Optionally, based on the water replenishment module 503 shown in FIG. 5 above, the adjustment unit is also specifically used for:

Based on the amount of water replenishment, the frequency converter is used to change the input power frequency of the metering pump; the pump speed of the metering pump is adjusted according to the input power frequency; the output flow of the metering pump is obtained based on the pump speed of the metering pump.

Optionally, based on the water replenishment module 503 shown in FIG. 5 above, the adjustment unit is also specifically used for:

Based on the amount of water replenishment, the output flow of the metering pump is obtained by changing the stroke length of the plunger and the frequency of the input power supply.

Optionally, based on the water replenishment module 503 shown in FIG. 5 above, if the controller includes a PID calculator and a pump stroke calculation controller, the water replenishment unit is specifically used for:

The sending subunit is used to send the difference between the water replenishment amount and the actual water replenishment amount of the hydrogen production system to the PID calculator.

The operation processing sub-unit is used for the PID calculator to receive the difference value, perform calculation processing on the difference value, obtain the processed water replenishment amount, and send the processed water replenishment amount to the metering pump controller.

The water supply control sub-unit is used for the metering pump controller to obtain the output flow according to the received treated water replenishment, and control the metering pump to replenish water to the hydrogen production system according to the output flow, so as to control the actual water replenishment of the hydrogen production system to the water replenishment within the volume range.

Optionally, based on the water replenishment module 503 shown in FIG. 5 above, the water replenishment control subunit is used to control the metering pump to replenish water to the hydrogen production system according to the output flow, and is also used to:

Real-time feedback of the actual water replenishment amount of the hydrogen production system, and update the difference based on the actual water replenishment amount of the hydrogen production system fed back.

It should be noted that the specific principle and execution process of each module in the hydrogen production system water replenishment device disclosed in the above-mentioned embodiments of the present invention are the same as the above-mentioned water replenishment method for the hydrogen production system in the present invention. The corresponding part in the hydrogen system replenishment method will not be repeated here.

Based on a hydrogen production system water supply device provided in an embodiment of the present invention, within a preset time span, the current hydrogen production water supply information of the hydrogen production system is obtained, and the hydrogen production water supply information includes the real-time hydrogen production of the hydrogen production system and the real-time electrical parameters. At least one of the following: Calculate the water replenishment amount of the hydrogen production system based on the current hydrogen production water replenishment information; use a metering pump to perform a water replenishment operation on the hydrogen production system based on the water replenishment amount. In this scheme, the metering pump performs the water replenishment operation on the hydrogen production system based on the calculated water replenishment amount required by the hydrogen production system, so that in the same time span, it can be based on the known water replenishment amount, that is, according to the hydrogen production system Timely and dynamically replenish water to the hydrogen production system to keep the total water volume in the hydrogen production system basically unchanged. When the time span is small, the liquid level in the hydrogen production system can also be kept basically unchanged at all times , so as to ensure that the concentration and temperature of the electrolyte remain basically unchanged during the water replenishment process, so as to reduce the impact on the electrolyte and improve the performance of the hydrogen production system.

The embodiment of the present application also discloses an electronic device, which is used to run a program; wherein, when the running program is running, the method for replenishing water in a hydrogen production system described in any one of the above embodiments is executed.

It should be noted that, for relevant descriptions of the method for replenishing water in the hydrogen production system, reference may be made to the above-mentioned corresponding embodiments, which will not be repeated here.

The embodiment of the present application also discloses a computer storage medium, the storage medium includes a storage program, wherein when the storage program is running, the device where the storage medium is located is controlled to execute the method for replenishing water in the hydrogen production system as described in any of the above embodiments.

In the context of the present application, a computer storage medium may be a tangible medium that may contain or store a program for use by or in connection with an instruction execution system, apparatus, or device. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media would include one or more wire-based electrical connections, portable computer discs, hard drives, random access memory (RAM), read only memory (ROM), erasable programmable read only memory (EPROM or flash memory), optical fiber, compact disk read only memory (CD-ROM), optical storage, magnetic storage, or any suitable combination of the foregoing.

It should be noted that, for relevant descriptions of the method for replenishing water in the hydrogen production system, reference may be made to the above-mentioned corresponding embodiments, which will not be repeated here.

Professionals can further realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software or a combination of the two. In order to clearly illustrate the possible For interchangeability, in the above description, the composition and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

In this application, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. an actual relationship or order. Moreover, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements but also items not expressly listed other elements, or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (12)

1. A method for replenishing water in a hydrogen production system, characterized in that the method comprises: Within a preset time span, obtain current hydrogen production and water replenishment information of the hydrogen production system, where the hydrogen production and water replenishment information includes at least one of real-time hydrogen production and real-time electrical parameters of the hydrogen production system; calculating the water replenishment amount of the hydrogen production system based on the current hydrogen production water replenishment information; A metering pump is used to perform a water replenishment operation on the hydrogen production system based on the water replenishment amount. 2. The method according to claim 1, wherein the calculation of the water replenishment amount of the hydrogen production system based on the current hydrogen production water replenishment information comprises: The water replenishment amount of the hydrogen production system is calculated according to the preset first water replenishment amount calculation formula and the real-time hydrogen production amount. 3. The method according to claim 1, wherein the calculating the water replenishment amount of the hydrogen production system based on the current hydrogen production water replenishment information comprises: The water replenishment amount of the hydrogen production system is calculated according to a preset second water replenishment amount calculation formula and the real-time electrical parameter, wherein the real-time electrical parameter is real-time power. 4. The method according to claim 1, wherein the use of a metering pump to perform a water replenishment operation on the hydrogen production system based on the water replenishment amount comprises: Adjusting the output flow of the metering pump based on the replenishment amount; According to the output flow rate, the hydrogen production system is supplemented with water by the metering pump, and the actual supplementary water volume of the hydrogen production system is controlled to be within the range of the supplementary water volume by the controller. 5. The method according to claim 4, wherein the adjusting the output flow of the metering pump based on the replenishment amount comprises: Based on the water replenishment amount, the plunger stroke length of the metering pump is changed to obtain the output flow of the metering pump. 6. The method according to claim 4, wherein the adjusting the output flow of the metering pump based on the replenishment amount comprises: Using a frequency converter to change the input power frequency of the metering pump based on the water replenishment amount; adjusting the pump speed of the metering pump according to the input power frequency; Based on the pump speed of the metering pump, the output flow of the metering pump is obtained. 7. The method according to claim 4, wherein the adjusting the output flow of the metering pump based on the replenishment amount comprises: Based on the amount of replenished water, the stroke length of the plunger and the frequency of the input power supply are changed to obtain the output flow of the metering pump. 8. The method according to claim 4, wherein if the controller includes a PID calculator and a metering pump controller, the hydrogen production system is controlled by the metering pump according to the output flow rate. Carry out water replenishment, and through the controller, control the actual water replenishment amount of the hydrogen production system to the range of the water replenishment amount, including: Sending the difference between the water replenishment amount and the actual water replenishment amount of the hydrogen production system to the PID calculator; The PID arithmetic unit receives the difference, performs calculation processing on the difference, obtains the processed water replenishment amount, and sends the processed water replenishment amount to the metering pump controller; The metering pump controller obtains the output flow according to the received treated water replenishment amount, and controls the metering pump to replenish water to the hydrogen production system according to the output flow, so that the actual hydrogen production system The amount of water replenishment is controlled to within the range of the amount of water replenishment. 9. The method according to claim 8, characterized in that, after controlling the metering pump to supplement the hydrogen production system according to the output flow, further comprising: The actual water replenishment amount of the hydrogen production system is fed back in real time, and the difference is updated according to the fed back actual water replenishment amount of the hydrogen generation system. 10. A water supply device for a hydrogen production system, characterized in that the device comprises: An acquisition module, configured to acquire current hydrogen production and water replenishment information of the hydrogen production system within a preset time span, where the hydrogen production and water replenishment information includes at least one of the real-time hydrogen production and real-time electrical parameters of the hydrogen production system; A calculation module, configured to calculate the water replenishment amount of the hydrogen production system based on the current hydrogen production water replenishment information; The water replenishment module is used to perform water replenishment operation on the hydrogen production system based on the replenishment water amount by using a metering pump. 11. An electronic device, characterized in that the electronic device is used to run a program, wherein the method for replenishing water in a hydrogen production system according to any one of claims 1-9 is executed when the running program is running. 12. A computer storage medium, characterized in that the storage medium includes a stored program, wherein when the stored program is running, the device where the storage medium is located is controlled to execute the manufacturing process according to any one of claims 1-9. Hydrogen system replenishment method.

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