CN113790394A

CN113790394A - Hydrogen production and hydrogenation system, control method and control device

Info

Publication number: CN113790394A
Application number: CN202110975875.3A
Authority: CN
Inventors: 张勤; 张鹏; 李运生; 周辉
Original assignee: Sungrow Renewables Development Co Ltd
Current assignee: Sungrow Renewables Development Co Ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2021-12-14
Anticipated expiration: 2041-08-24
Also published as: CN113790394B

Abstract

The application discloses a hydrogen production hydrogenation system, a control method and a control device, relates to the technical field of hydrogen production, and can solve the potential safety hazard caused by insufficient cooling liquid in the conventional hydrogen production hydrogenation system. The hydrogen production and hydrogenation system comprises: hydrogen compression equipment, hydrogenation equipment, liquid supplementing equipment and control equipment; the hydrogen compression equipment comprises a first circulating cooling system, and the hydrogenation equipment comprises a second circulating cooling system; a first liquid level sensor is arranged in a pipeline of the first circulating cooling system, and a second liquid level sensor is arranged in a pipeline of the second circulating cooling system; the control device is configured to: acquiring a first liquid level and/or a second liquid level; and controlling the liquid supplementing equipment to supplement liquid to the pipeline of the first circulating cooling system and/or the pipeline of the second circulating cooling system according to the first liquid level and/or the second liquid level.

Description

Hydrogen production and hydrogenation system, control method and control device

Technical Field

The embodiment of the application relates to the technical field of hydrogen production, in particular to a hydrogen production and hydrogenation system, a control method and a control device.

Background

The hydrogen energy source is a high-efficiency, clean and sustainable "carbon-free" energy source, and has become a core energy source in the application direction of new energy at present, and new energy automobiles represented by hydrogen energy automobiles have also become one of the important directions in the application of hydrogen energy.

Generally, a hydrogen production and hydrogenation system is composed of a hydrogen compression device, a hydrogenation device and the like, and when the hydrogen compression device and the hydrogenation device work, the devices are cooled through a circulating cooling system.

At present, the work of the circulating cooling system depends on the cooling liquid in the pipelines of the circulating cooling system, and once the cooling liquid is insufficient, the cooling effect of the circulating cooling system is influenced. Therefore, the temperature of the hydrogen compression equipment and the hydrogenation equipment becomes very high, the power consumption of the system is increased, and great potential safety hazards exist.

Disclosure of Invention

The application provides a hydrogen production hydrogenation system, a control method and a control device, which can solve the problem of potential safety hazard caused by insufficient cooling liquid in the conventional hydrogen production hydrogenation system.

In order to achieve the purpose, the technical scheme is as follows:

in a first aspect, the present application provides a hydrogen production hydrogenation system comprising: hydrogen compression equipment, hydrogenation equipment, liquid supplementing equipment and control equipment; the hydrogen compression equipment comprises a first circulating cooling system, and the hydrogenation equipment comprises a second circulating cooling system; a first liquid level sensor is arranged in a pipeline of the first circulating cooling system, and a second liquid level sensor is arranged in a pipeline of the second circulating cooling system; the control device is configured to: acquiring a first liquid level and/or a second liquid level; controlling the liquid supplementing equipment to supplement liquid to the pipeline of the first circulating cooling system and/or the pipeline of the second circulating cooling system according to the first liquid level and/or the second liquid level; the first liquid level is the liquid level of liquid in a pipeline of the first circulating cooling system detected by the first liquid level sensor, and the second liquid level is the liquid level of liquid in a pipeline of the second circulating cooling system detected by the second liquid level sensor.

In the technical scheme that this application provided, the liquid level of liquid in first circulative cooling system's the pipeline can be detected to first level sensor, and the liquid level of liquid in second circulative cooling system's the pipeline can be detected to the second level sensor. Therefore, the control equipment can judge whether the first circulating cooling system and/or the second circulating cooling system needs to be replenished according to the first liquid level measured by the first liquid level sensor and/or the second liquid level measured by the second liquid level sensor, and control the liquid replenishing equipment to replenish liquid to the pipeline of the first circulating cooling system and/or the pipeline of the second circulating cooling system when the liquid replenishing requirement is determined. It can be seen that, among the technical scheme that this application provided, controlgear can realize according to first liquid level and/or second liquid level automatic to the pipeline of first circulative cooling system and/or the pipeline fluid infusion of second circulative cooling system, like this, just can avoid appearing the not enough condition of coolant liquid to can guarantee circulative cooling system's cooling effect, maintain the temperature of hydrogen compression equipment and hydrogenation equipment, reduce the system consumption, and then avoid because the potential safety hazard that the coolant liquid is insufficient to lead to.

Optionally, in a possible design manner, the hydrogen production and hydrogenation system further includes a hydrogen production device and a hydrogen production controller, and the hydrogen production controller is used for controlling the operation state of the hydrogen production device;

the control device is specifically configured to: under the condition that the running state is determined to be the starting state, a first liquid level and a second liquid level are obtained; and acquiring a second liquid level under the condition that the running state is determined to be the stop state.

Optionally, in another possible design, the control device has a configuration:

after the first liquid level and the second liquid level are obtained, under the condition that the first liquid level is determined to be lower than or equal to a first preset liquid level and the second liquid level is determined to be higher than a second preset liquid level, controlling liquid supplementing equipment to supplement liquid to a pipeline of the first circulating cooling system; controlling the liquid supplementing equipment to supplement liquid to the pipeline of the second circulating cooling system under the condition that the second liquid level is lower than or equal to a second preset liquid level and the first liquid level is higher than a first preset liquid level; and under the condition that the first liquid level is determined to be lower than or equal to a first preset liquid level and the second liquid level is determined to be lower than or equal to a second preset liquid level, controlling the liquid supplementing equipment to supplement liquid to the pipeline of the first circulating cooling system and the pipeline of the second circulating cooling system.

Optionally, in another possible design, the control device has a configuration:

and after the second liquid level is obtained, controlling the liquid supplementing equipment to supplement liquid to the pipeline of the second circulating cooling system under the condition that the second liquid level is lower than or equal to a second preset liquid level.

Optionally, in another possible design, a first temperature sensor and a first precooling apparatus are further arranged in the pipeline of the first circulating cooling system, and a second temperature sensor and a second precooling apparatus are further arranged in the pipeline of the second circulating cooling system;

the control device is further configured to: acquiring a first temperature value and/or a second temperature value; the first temperature value is the temperature of liquid in a pipeline of the first circulating cooling system detected by the first temperature sensor, and the second temperature value is the temperature of liquid in a pipeline of the second circulating cooling system detected by the second temperature sensor; and controlling the first precooling equipment to cool the liquid in the pipeline of the first circulating cooling system and/or controlling the second precooling equipment to cool the liquid in the pipeline of the second circulating cooling system according to the first temperature value and/or the second temperature value.

the control device is further configured to: under the condition that the running state is determined to be the starting state, acquiring a first temperature value and a second temperature value; and acquiring a second temperature value under the condition that the running state is determined to be the stop state.

In a second aspect, the present application provides a control method, which can be applied to the hydrogen production hydrogenation system according to the first aspect or any design manner of the first aspect. The control method may include:

acquiring a first liquid level and/or a second liquid level; the first liquid level is the liquid level of liquid in a pipeline of the first circulating cooling system detected by the first liquid level sensor, and the second liquid level is the liquid level of liquid in a pipeline of the second circulating cooling system detected by the second liquid level sensor; and controlling the liquid supplementing equipment to supplement liquid to the pipeline of the first circulating cooling system and/or the pipeline of the second circulating cooling system according to the first liquid level and/or the second liquid level.

Optionally, in a possible design, obtaining the first liquid level and/or the second liquid level may include:

under the condition that the running state of the hydrogen production equipment is determined to be a starting state, a first liquid level and a second liquid level are obtained; and acquiring a second liquid level under the condition that the running state is determined to be the stop state.

Optionally, in a possible design, after the first liquid level and the second liquid level are obtained, according to the first liquid level and the second liquid level, controlling the liquid replenishing device to replenish the liquid to the pipeline of the first circulation cooling system and/or the pipeline of the second circulation cooling system, includes: under the conditions that the first liquid level is lower than or equal to a first preset liquid level and the second liquid level is higher than a second preset liquid level, controlling liquid supplementing equipment to supplement liquid to a pipeline of the first circulating cooling system; controlling the liquid supplementing equipment to supplement liquid to the pipeline of the second circulating cooling system under the condition that the second liquid level is lower than or equal to a second preset liquid level and the first liquid level is higher than a first preset liquid level; and under the condition that the first liquid level is determined to be lower than or equal to a first preset liquid level and the second liquid level is determined to be lower than or equal to a second preset liquid level, controlling the liquid supplementing equipment to supplement liquid to the pipeline of the first circulating cooling system and the pipeline of the second circulating cooling system.

Optionally, in a possible design, after the second liquid level is obtained, according to the second liquid level, controlling the liquid replenishing device to replenish the liquid to the pipeline of the second circulation cooling system includes: and under the condition that the second liquid level is determined to be lower than or equal to a second preset liquid level, controlling the liquid supplementing equipment to supplement liquid to the pipeline of the second circulating cooling system.

Optionally, in a possible design, the control method may further include:

acquiring a first temperature value and/or a second temperature value; the first temperature value is the temperature of liquid in a pipeline of the first circulating cooling system detected by the first temperature sensor, and the second temperature value is the temperature of liquid in a pipeline of the second circulating cooling system detected by the second temperature sensor;

and controlling the first precooling equipment to cool the liquid in the pipeline of the first circulating cooling system and/or controlling the second precooling equipment to cool the liquid in the pipeline of the second circulating cooling system according to the first temperature value and/or the second temperature value.

Optionally, in a possible design manner, acquiring the first temperature value and/or the second temperature value includes: under the condition that the running state is determined to be the starting state, acquiring a first temperature value and a second temperature value; and acquiring a second temperature value under the condition that the running state is determined to be the stop state.

In a third aspect, the present application provides a control apparatus, which may be used to execute the control method provided in the second aspect, the control apparatus comprising:

the acquisition module is used for acquiring a first liquid level and/or a second liquid level; the first liquid level is the liquid level of liquid in a pipeline of the first circulating cooling system detected by the first liquid level sensor, and the second liquid level is the liquid level of liquid in a pipeline of the second circulating cooling system detected by the second liquid level sensor;

and the control module is used for controlling the liquid supplementing equipment to supplement liquid to the pipeline of the first circulating cooling system and/or the pipeline of the second circulating cooling system according to the first liquid level and/or the second liquid level.

In a fourth aspect, the present application provides a control device comprising a memory, a processor, a bus, and a communication interface; the memory is used for storing computer execution instructions, and the processor is connected with the memory through a bus; when the control device is operating, the processor executes computer-executable instructions stored in the memory to cause the control device to perform the control method as provided in the second aspect above.

Optionally, the control device may further comprise a transceiver for performing the steps of transceiving data, signaling or information, e.g. obtaining the first level and/or the second level, under control of the processor of the control device.

Further optionally, the control device may be a physical machine for implementing the control method, or may be a part of the physical machine, for example, a system on chip in the physical machine. The system-on-chip is adapted to support the control device to perform the functions referred to in the second aspect, e.g. to receive, transmit or process data and/or information referred to in the above-mentioned control method. The chip system includes a chip and may also include other discrete devices or circuit structures.

In a fifth aspect, the present application provides a computer-readable storage medium having instructions stored therein, which when executed by a computer, cause the computer to perform the control method as provided in the second aspect.

In a sixth aspect, the present application provides a computer program product comprising computer instructions which, when run on a computer, cause the computer to perform the control method as provided in the second aspect.

It should be noted that all or part of the computer instructions may be stored on the computer readable storage medium. The computer-readable storage medium may be packaged with the processor of the control device, or may be packaged separately from the processor of the control device, which is not limited in this application.

For the description of the second, third, fourth, fifth and sixth aspects in this application, reference may be made to the detailed description of the first aspect; in addition, for the beneficial effects described in the second aspect, the third aspect, the fourth aspect, the fifth aspect and the sixth aspect, reference may be made to the beneficial effect analysis of the first aspect, and details are not repeated here.

In the present application, the names of the devices or functional modules in the hydrogen production and hydrogenation system are not limited, and in actual implementation, the devices or functional modules may be presented by other names. Insofar as the functions of the respective devices or functional modules are similar to those of the present application, they fall within the scope of the claims of the present application and their equivalents.

These and other aspects of the present application will be more readily apparent from the following description.

Drawings

Fig. 1 is a schematic diagram of an architecture of a hydrogen production and hydrogenation system provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of an architecture of another hydrogen production and hydrogenation system provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of an architecture of yet another hydrogen production and hydrogenation system provided in an embodiment of the present application;

FIG. 4 is a schematic diagram of an architecture of yet another hydrogen production and hydrogenation system provided in an embodiment of the present application;

fig. 5 is a schematic flowchart of a control method according to an embodiment of the present application;

fig. 6 is a schematic flowchart of another control method provided in the embodiment of the present application;

fig. 7 is a schematic flowchart of another control method provided in the embodiment of the present application;

fig. 8 is a schematic flowchart of another control method provided in the embodiment of the present application;

fig. 9 is a schematic structural diagram of a control device according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of a control device according to an embodiment of the present application.

Detailed Description

The hydrogen production hydrogenation system, the control method and the control device provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.

The terms "first" and "second" and the like in the description and drawings of the present application are used for distinguishing different objects or for distinguishing different processes for the same object, and are not used for describing a specific order of the objects.

Furthermore, the terms "including" and "having," and any variations thereof, as referred to in the description of the present application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the description of the present application, the meaning of "a plurality" means two or more unless otherwise specified.

At present, a hydrogen production and hydrogenation system generally comprises a hydrogen compression device, a hydrogenation device and the like. Illustratively, referring to FIG. 1, embodiments of the present application provide a hydrogen production hydrogenation system. As shown in fig. 1, the hydrogen production and hydrogenation system comprises an electrical device, a hydrogen production controller, a purification device, a hydrogen compression device, a sequence control panel, a hydrogenation device, a hydrogen storage device and a cycle start-stop device. When the hydrogen compression equipment and the hydrogenation equipment work, the corresponding circulating cooling system can be controlled to start through the circulating start-stop equipment, so that the equipment is cooled. The operation of the hydronic cooling system relies on the cooling fluid in the pipes of the hydronic cooling system.

In the prior hydrogen production and hydrogenation system shown in fig. 1, the cooling effect of the circulating cooling system is affected once the cooling liquid is insufficient. Therefore, the temperature of the hydrogen compression equipment and the temperature of the hydrogenation equipment are very high, the power consumption of the system is increased, and the potential safety hazard is large.

In view of the problems in the prior art, embodiments of the present application provide a hydrogen production hydrogenation system, and fig. 2 shows a structure of the hydrogen production hydrogenation system provided by embodiments of the present application. As shown in fig. 2, the hydrogen production and hydrogenation system includes a hydrogen compression device 01, a hydrogenation device 02, a liquid replenishing device 03 and a control device 04. The hydrogen compression device 01 comprises a first circulation cooling system, and the hydrogenation device 02 comprises a second circulation cooling system; a first liquid level sensor is arranged in a pipeline of the first circulating cooling system, and a second liquid level sensor is arranged in a pipeline of the second circulating cooling system.

The hydrogen compressing apparatus 01 may compress hydrogen gas, which is input into the hydrogen compressing apparatus 01 from other apparatuses (such as a purifying apparatus or a hydrogen producing apparatus), and generate heat when performing the hydrogen compression. When the amount of heat generated is excessive, there is a safety risk that the temperature of hydrogen in the hydrogen compression device 01 is too high, and therefore, the hydrogen compression device 01 is provided with the first circulation cooling system. The pipeline of first circulative cooling system is equipped with the coolant liquid in, and under the abundant condition of coolant liquid that the pipeline was equipped with, first circulative cooling system work can be cooled down hydrogen compression equipment 01. In order to ensure that the cooling liquid in the pipeline of the first circulating cooling system is in a sufficient state, the first liquid level sensor can be arranged in the pipeline of the first circulating cooling system, and the first liquid level sensor can detect the liquid level of the liquid in the pipeline of the first circulating cooling system, so that liquid supplementing can be performed when the cooling liquid is insufficient.

The hydrogenation equipment 02 can hydrogenate hydrogen consuming products such as hydrogen energy vehicles. Since hydrogenation from the hydrogenation facility 02 to the hydrogen energy vehicle is also required to be performed within a safe temperature range, the hydrogenation facility 02 is provided with a second circulation cooling system. The pipeline of the second circulating cooling system is filled with cooling liquid, and the second circulating cooling system can work to cool the hydrogenation equipment 02 under the condition that the cooling liquid in the pipeline is sufficient. In order to ensure that the cooling liquid in the pipeline of the second circulating cooling system is in a sufficient state, the embodiment of the application can be provided with a second liquid level sensor in the pipeline of the second circulating cooling system, and the second liquid level sensor can detect the liquid level of the liquid in the pipeline of the second circulating cooling system, so that liquid supplementing can be performed when the cooling liquid is insufficient.

The control device 04 is configured to: acquiring a first liquid level and/or a second liquid level; and then controlling the liquid supplementing device 03 to supplement liquid to the pipeline of the first circulating cooling system and/or the pipeline of the second circulating cooling system according to the first liquid level and/or the second liquid level. The first liquid level is the liquid level of liquid in a pipeline of the first circulating cooling system detected by the first liquid level sensor, and the second liquid level is the liquid level of liquid in a pipeline of the second circulating cooling system detected by the second liquid level sensor.

Optionally, in a possible implementation manner, after the control device 04 obtains the first liquid level and/or the second liquid level, a liquid supplementing instruction may be issued to the liquid supplementing device 03 according to the obtained first liquid level and/or the obtained second liquid level, and the liquid supplementing instruction may include a name of a pipeline to be supplemented with liquid. Of course, the fluid replacement instruction may also include other information, such as the amount of fluid to be replaced.

Optionally, the fluid replacement device 03 may include a water tower, a water pump, and a motor control subsystem. For example, as shown in fig. 2, valves are arranged in pipelines of the first and second circulating cooling systems, the fluid infusion device 03 may be connected to the valves of the first and second circulating cooling systems through the pipelines, and after receiving a fluid infusion instruction, the fluid infusion device 03 may control the operation of the water tower, the water pump, and the motor control subsystem, and perform pipeline fluid infusion to the corresponding circulating cooling system according to an instruction of the fluid infusion instruction.

In the drawings provided in the embodiments of the present application, a connection between devices by a dotted line indicates that the devices can be connected in communication, and a connection between devices by a solid line indicates that the devices can be connected physically.

Alternatively, referring to fig. 3, another structure of the hydrogen production and hydrogenation system provided in the embodiments of the present application is shown. As shown in fig. 3, the hydrogen production and hydrogenation system comprises a hydrogen compression device 01, a hydrogenation device 02, a liquid supplementing device 03, a control device 04, a hydrogen production device 05 and a hydrogen production controller 06, wherein the hydrogen production controller 06 is used for controlling the operation state of the hydrogen production device 05.

The hydrogen production equipment 05 is used for producing hydrogen, and illustratively, the hydrogen production equipment 05 comprises an electrolytic cell, and the electrolyte in the electrolytic cell can generate hydrogen through chemical reaction.

The hydrogen production controller 06 may control the operation state of the hydrogen production equipment 05. Optionally, the hydrogen production controller 06 may also monitor a fault state of the hydrogen production equipment 05, and may send an alarm when it is determined that the hydrogen production equipment 05 has a fault.

Generally, the hydrogen gas in the hydrogen compression device 01 is input by the hydrogen gas produced by the hydrogen production device 05 through a pipeline, or the hydrogen gas produced by the hydrogen production device 05 is input after being purified. Thus, when the hydrogen generation equipment 05 is in a stopped state, the hydrogen compression equipment 01 can be stopped, and the hydrogen compression equipment 01 does not generate high heat. Therefore, in order to save energy consumption, the first circulation cooling system may be stopped while the hydrogen plant 05 is in a stopped state. When the first circulation cooling system stops running, liquid does not need to be replenished into the pipeline of the first circulation cooling system. Therefore, optionally, the control device 04 acquires the first liquid level and the second liquid level when determining that the operation state of the hydrogen production device 05 is the start-up state; the control device 04 acquires the second liquid level when it is determined that the operation state is the stop state. In this way, in the case where it is determined that the operation state of the hydrogen production apparatus 05 is the stopped state, the control apparatus 04 may determine only the liquid level of the liquid in the pipe of the second circulation cooling system, and computational resources and storage resources inside the control apparatus 04 may be saved.

Optionally, in a possible implementation manner, if the operation state of the hydrogen production equipment 05 is a start-up state, the control equipment 04 controls the liquid supplementing equipment 03 to supplement liquid to the pipeline of the first circulating cooling system when determining that the first liquid level is lower than or equal to a first preset liquid level and determining that the second liquid level is higher than a second preset liquid level; when the second liquid level is determined to be lower than or equal to the second preset liquid level and the first liquid level is determined to be higher than the first preset liquid level, controlling the liquid supplementing equipment 03 to supplement liquid to the pipeline of the second circulating cooling system; and when the first liquid level is determined to be lower than or equal to a first preset liquid level and the second liquid level is determined to be lower than or equal to a second preset liquid level, controlling the liquid supplementing equipment 03 to supplement liquid to the pipeline of the first circulating cooling system and the pipeline of the second circulating cooling system.

Wherein the first preset level and the second preset level may be predetermined parameters. Specifically, the first preset liquid level may be determined according to the cooling performance of the first circulation cooling system, and the second preset liquid level may be determined according to the cooling performance of the second circulation cooling system. For example, when the first level is less than or equal to Lmin1, the cooling effect of the first hydronic cooling system will be affected, and Lmin1 may be determined as the first predetermined level; when the second level is less than or equal to Lmin2, the cooling effect of the second hydronic system will be affected, and Lmin2 may be determined as the second preset level.

Optionally, in another possible implementation manner, if the operation state of the hydrogen production equipment 05 is a stopped state, after the control equipment 04 obtains the second liquid level, and under the condition that it is determined that the second liquid level is lower than or equal to the second preset liquid level, the liquid supplementing equipment 03 is controlled to supplement liquid to the pipeline of the second circulation cooling system.

The amount of the cooling liquid that can be stored in the pipes of the first circulation cooling system and the second circulation cooling system is fixed, so, optionally, in the process that the control device 04 controls the liquid replenishing device 03 to replenish the liquid to the pipes of the first circulation cooling system and/or the pipes of the second circulation cooling system, the liquid replenishing device 03 may also be controlled to stop replenishing the liquid to the pipes of the first circulation cooling system and/or the pipes of the second circulation cooling system according to the first liquid level and/or the second liquid level obtained in real time.

For example, if the control device 04 controls the fluid infusion device 03 to infuse the pipeline of the first circulation cooling system, the control device 04 may obtain the first fluid level in real time, and when the first fluid level is higher than a third preset fluid level, control the fluid infusion device 03 to stop infusing the pipeline of the first circulation cooling system; if the control device 04 controls the fluid infusion device 03 to infuse the pipeline of the second cooling circulation system, the control device 04 may obtain the second fluid level in real time, and when the second fluid level is higher than the fourth preset fluid level, the control device 03 stops infusing the pipeline of the second cooling circulation system.

Wherein the third preset level and the fourth preset level may be predetermined parameters. Specifically, the third preset liquid level may be determined according to the maximum capacity of the pipeline of the first circulation cooling system, and the fourth preset liquid level may be determined according to the maximum capacity of the pipeline of the second circulation cooling system.

Optionally, as shown in fig. 3, a first temperature sensor and a first precooling apparatus may be further disposed in the pipeline of the first circulating cooling system, and a second temperature sensor and a second precooling apparatus may be further disposed in the pipeline of the second circulating cooling system; the control device 04 is further configured to: acquiring a first temperature value and/or a second temperature value; and controlling the first precooling equipment to cool the liquid in the pipeline of the first circulating cooling system and/or controlling the second precooling equipment to cool the liquid in the pipeline of the second circulating cooling system according to the first temperature value and/or the second temperature value.

The first temperature value is the temperature of liquid in a pipeline of the first circulating cooling system detected by the first temperature sensor, and the second temperature value is the temperature of liquid in a pipeline of the second circulating cooling system detected by the second temperature sensor.

Because the heat generated during the operation of the hydrogen compression equipment 01 and the hydrogenation equipment 02 is large, when the first circulating cooling system and the second circulating cooling system operate, a large amount of cooling liquid needs to be added into the pipeline to reduce the temperature of the hydrogen compression equipment 01 and the hydrogenation equipment 02 to be within a safe temperature range. Therefore, the existing first circulation cooling system and the second circulation cooling system have large capacity of pipelines and large occupied space. In addition, because the heat generated when the hydrogen compression equipment 01 and the hydrogenation equipment 02 work is large, the speed of cooling the hydrogen compression equipment 01 and the hydrogenation equipment 02 by the first circulating cooling system and the second circulating cooling system is also slow. Therefore, in the technical scheme provided by the embodiment of the application, the precooling equipment can be used for cooling the cooling liquid in the pipelines of the first circulating cooling system and the second circulating cooling system, so that the using amount of the cooling liquid can be reduced, the occupied space of the pipelines of the first circulating cooling system and the second circulating cooling system is saved, and the cooling speed of the hydrogen compression equipment 01 and the hydrogenation equipment 02 is increased.

Optionally, in a possible implementation manner, after the control device 04 obtains the first temperature value and/or the second temperature value, a cooling instruction may be issued to the first precooling device and/or the second precooling device according to the obtained first temperature value and/or the obtained second temperature value, and the cooling instruction may include a name of a pipeline to be cooled.

The first recirculating cooling system in hydrogen compression facility 01 may be shut down when hydrogen plant 05 is shut down. In order to save energy consumption, when the first circulation cooling system stops operating, the cooling liquid in the pipeline of the first circulation cooling system is not cooled. Therefore, optionally, the control device 04 acquires the first temperature value and the second temperature value when determining that the operation state of the hydrogen production device 05 is the start-up state; the control apparatus 04 acquires the second temperature value in the case where it is determined that the operation state is the stop state. In this way, when determining that the operating state of the hydrogen production plant 05 is the stopped state, the control plant 04 may determine only the temperature value of the liquid in the pipe of the second circulation cooling system, and may save the calculation resources and the storage resources inside the control plant 04.

Optionally, in a possible implementation manner, if the operation state of the hydrogen production equipment 05 is a start-up state, the control equipment 04 controls the precooling equipment to cool the liquid in the pipeline of the second circulating cooling system when determining that the first temperature value is lower than or equal to a first preset temperature value and determining that the second temperature value is higher than a second preset temperature value; under the condition that the second temperature value is lower than or equal to a second preset temperature value and the first temperature value is higher than a first preset temperature value, controlling precooling equipment to cool liquid in a pipeline of the first circulating cooling system; and under the condition that the first temperature value is higher than a first preset temperature value and the second temperature value is higher than a second preset temperature value, controlling the precooling equipment to cool the liquid in the pipelines of the first circulating cooling system and the second circulating cooling system.

The first preset temperature value and the second preset temperature value may be predetermined temperature values. For example, when the first temperature value is higher than Tmax1, the temperature of the hydrogen compression device 01 will exceed the safe temperature range, and a safety hazard may exist, Tmax1 may be determined as the first preset temperature value; when the second temperature value is higher than Tmax2, the temperature of the hydrogenation apparatus 02 will exceed the safe temperature range, and a safety hazard may exist, and Tmax2 may be determined as the second preset temperature value.

Optionally, in another possible implementation manner, if the operation state of the hydrogen production equipment 05 is a stop state, after the control equipment 04 obtains the second temperature value, under the condition that it is determined that the second temperature value is higher than a second preset temperature value, the precooling equipment is controlled to cool the liquid in the pipeline of the second circulation cooling system.

When the liquid in the pipelines of the first circulating cooling system and the second circulating cooling system is reduced to a certain temperature value, the cooling effect of the first circulating cooling system and the second circulating cooling system is optimal. Therefore, optionally, in the process that the control device 04 controls the precooling device to cool the liquid in the pipeline of the first circulating cooling system and/or the pipeline of the second circulating cooling system, the precooling device may be controlled to stop cooling according to the first temperature value and/or the second temperature value obtained in real time.

For example, if the control device 04 controls the pre-cooling device to cool the liquid in the pipeline of the first cooling cycle system, the control device 04 may obtain the first temperature value in real time, and when the first temperature value is lower than a third preset temperature value, control the pre-cooling device to stop cooling the liquid in the pipeline of the first cooling cycle system; if the control device 04 controls the pre-cooling device to cool the liquid in the pipeline of the second cooling circulation system, the control device 04 may obtain the second temperature value in real time, and when the second temperature value is lower than the fourth preset temperature value, the pre-cooling device is controlled to stop cooling the liquid in the pipeline of the second cooling circulation system.

Wherein the third preset temperature value and the fourth preset temperature value may be predetermined temperature values.

In practical application, the hydrogen production and hydrogenation system can also comprise other equipment. Illustratively, referring to fig. 4, another configuration of a hydrogen production and hydrogenation system provided in the examples of the present application is shown. As shown in fig. 4, the hydrogen production and hydrogenation system comprises a hydrogen compression device 01, a hydrogenation device 02, a liquid supplementing device 03, a control device 04, a hydrogen production device 05, a hydrogen production controller 06, a hydrogen storage device 07, an electrical device 08, a purification device 09, a sequence control panel 10 and a cycle start-stop device.

The purification device 09 can purify the hydrogen gas produced by the hydrogen plant 05 and then compress it by the hydrogen compression device 01. The sequence control panel 10 may control the hydrogen compressed by the hydrogen compression device 01 to be directly delivered to the hydrogenation device 02, may control the hydrogen compressed by the hydrogen compression device 01 to be output to the hydrogen storage device 07, and may control the hydrogen stored in the hydrogen storage device 07 to be delivered to the hydrogenation device 02. However, when the pressure value in the hydrogen storage apparatus 07 is smaller than the pressure value in the hydrogenation apparatus 02, it is difficult to deliver the hydrogen gas in the hydrogen storage apparatus 07 to the hydrogenation apparatus 02, and the hydrogen gas in the hydrogen storage apparatus 07 may not meet the demand of the hydrogenation apparatus 02. Therefore, when the pressure value in the hydrogen storage device 07 is smaller than the pressure value of the hydrogenation device 02, the sequence control panel 10 can control the hydrogen storage device 07 and the hydrogen compression device 01 to simultaneously hydrogenate the hydrogenation device 02; when the pressure value in the hydrogen storage device 07 is greater than or equal to the hydrogenation device 02, the sequence control board 10 may control the hydrogen storage device 07 to hydrogenate to the hydrogenation device 02.

It can be seen that, when the sequence control panel 10 determines the hydrogenation mode, the pressure value in the hydrogen storage device 07 and the pressure value in the hydrogenation device 02 need to be determined. Therefore, the hydrogen storage device 07 may include a first pressure sensor for detecting a pressure value of the hydrogen storage device 07, and the hydrogenation device 02 may include a second pressure sensor for detecting a pressure value of the hydrogenation device 02.

In summary, in the technical solution provided in the embodiment of the present application, the first liquid level sensor may detect a liquid level of a liquid in a pipe of the first circulation cooling system, and the second liquid level sensor may detect a liquid level of a liquid in a pipe of the second circulation cooling system. Therefore, the control equipment can judge whether the first circulating cooling system and/or the second circulating cooling system needs to be replenished according to the first liquid level measured by the first liquid level sensor and/or the second liquid level measured by the second liquid level sensor, and control the liquid replenishing equipment to replenish liquid to the pipeline of the first circulating cooling system and/or the pipeline of the second circulating cooling system when the liquid replenishing requirement is determined. It can be seen that, in the technical scheme provided by the embodiment of the application, the control device can automatically supply liquid to the pipeline of the first circulating cooling system and/or the pipeline of the second circulating cooling system according to the first liquid level and/or the second liquid level, so that the situation of insufficient cooling liquid can be avoided, the cooling effect of the circulating cooling system can be ensured, the temperatures of the hydrogen compression device and the hydrogenation device are maintained, the power consumption of the system is reduced, and the potential safety hazard caused by insufficient cooling liquid is avoided.

Referring to fig. 5, the embodiment of the present application further provides a control method, which may be applied to the hydrogen production hydrogenation system shown in fig. 2, 3 or 4, and the execution subject of the control method may be the control device 04 in the hydrogen production hydrogenation system shown in fig. 2, 3 or 4, and the method includes S501-S502:

s501, acquiring a first liquid level and/or a second liquid level.

And S502, controlling the liquid supplementing equipment to supplement liquid to the pipeline of the first circulating cooling system and/or the pipeline of the second circulating cooling system according to the first liquid level and/or the second liquid level.

Optionally, the step S501 may include: acquiring the running state of hydrogen production equipment, and acquiring a first liquid level and a second liquid level under the condition that the running state of the hydrogen production equipment is determined to be a starting state; and acquiring a second liquid level under the condition that the running state is determined to be the stop state.

Alternatively, in the case where the operation state of the hydrogen production apparatus is determined to be the start-up state, step S502 may include: under the conditions that the first liquid level is lower than or equal to a first preset liquid level and the second liquid level is higher than a second preset liquid level, controlling liquid supplementing equipment to supplement liquid to a pipeline of the first circulating cooling system; controlling the liquid supplementing equipment to supplement liquid to the pipeline of the second circulating cooling system under the condition that the second liquid level is lower than or equal to a second preset liquid level and the first liquid level is higher than a first preset liquid level; and under the condition that the first liquid level is determined to be lower than or equal to a first preset liquid level and the second liquid level is determined to be lower than or equal to a second preset liquid level, controlling the liquid supplementing equipment to supplement liquid to the pipeline of the first circulating cooling system and the pipeline of the second circulating cooling system.

Alternatively, in the case where it is determined that the operation state of the hydrogen plant is the stopped state, the step S502 may include: and under the condition that the second liquid level is determined to be lower than or equal to a second preset liquid level, controlling the liquid supplementing equipment to supplement liquid to the pipeline of the second circulating cooling system.

Optionally, as shown in fig. 6, before step S501 in fig. 5, the control method provided in the embodiment of the present application may further include S5001-S5002:

s5001, acquiring a first temperature value and/or a second temperature value.

S5002, according to the first temperature value and/or the second temperature value, controlling the first precooling equipment to cool the liquid in the pipeline of the first circulating cooling system and/or controlling the second precooling equipment to cool the liquid in the pipeline of the second circulating cooling system.

Optionally, the step S5001 may include: acquiring the operating state of hydrogen production equipment, and acquiring a first temperature value and a second temperature value under the condition that the operating state is determined to be a starting state; and acquiring a second temperature value under the condition that the running state is determined to be the stop state.

In summary, as shown in fig. 7, the embodiment of the present application further provides a control method applied to a control device in a hydrogen production and hydrogenation system, including S701 to S7014:

and S701, acquiring the operating state of the hydrogen production equipment from the hydrogen production controller.

S702, judging whether the hydrogen production equipment has faults or not.

Executing step S7014 under the condition that the hydrogen production equipment is determined to be in failure; in the case where it is determined that the hydrogen plant is not malfunctioning, step S703 is performed.

S703, judging whether the hydrogen production equipment is in a starting state.

In the case where it is determined that the hydrogen production apparatus is in the start-up state, step S704 is executed; in the case where it is determined that the hydrogen plant is in the stopped state, step S709 is executed.

S704, judging whether the pressure value of the hydrogen storage equipment is smaller than the pressure value of the hydrogenation equipment.

Executing step S705 under the condition that the pressure value of the hydrogen storage equipment is determined to be smaller than the pressure value of the hydrogenation equipment; in the case where it is determined that the pressure value of the hydrogen storage apparatus is greater than or equal to the pressure value of the hydrogenation apparatus, step S7013 is performed.

S705, determining that the hydrogen production pipeline of the hydrogen production equipment hydrogenates to the hydrogenation equipment through the hydrogen compression equipment, and hydrogenates to the hydrogenation equipment from the hydrogen storage equipment.

And S706, acquiring a first liquid level and a second liquid level.

S707, judging whether the first liquid level is larger than a first preset liquid level and whether the second liquid level is larger than a second preset liquid level.

In case it is determined that the first liquid level is less than or equal to the first preset liquid level, or the second liquid level is less than or equal to the second preset liquid level, performing step S708; and returning to re-execute the step S706 under the condition that the first liquid level is determined to be greater than the first preset liquid level and the second liquid level is determined to be greater than the second preset liquid level.

S708, controlling the liquid supplementing device to supplement liquid to the pipeline of the first circulating cooling system until the liquid level of the pipeline of the first circulating cooling system reaches a third preset liquid level, or controlling the liquid supplementing device to supplement liquid to the pipeline of the second circulating cooling system until the liquid level of the pipeline of the second circulating cooling system reaches a fourth preset liquid level.

After step S708, the flow returns to re-execution of step S706.

S709, determining to hydrogenate from the hydrogen storage device to the hydrogenation device.

S7010, obtaining a second liquid level.

S7011, judging whether the second liquid level is larger than a second preset liquid level.

Executing step S7012 when the second liquid level is determined to be less than or equal to the second preset liquid level; and returning to re-execute the step S7010 under the condition that the second liquid level is determined to be greater than the second preset liquid level.

S7012, controlling the liquid supplementing device to supplement liquid to the pipeline of the second circulating cooling system until the liquid level of the pipeline of the second circulating cooling system reaches a fourth preset liquid level.

After step S7012, the process returns to re-execution of step S7010.

S7013, hydrogen is added from the hydrogen storage equipment to the hydrogenation equipment.

After step S7013, step S706 is performed.

S7014, early warning of hydrogen production equipment failure is sent.

As shown in fig. 8, the embodiment of the present application further provides a control method, which is applied to a control device in a hydrogen production and hydrogenation system, and includes S801-S8016:

s801, acquiring the operation state of the hydrogen production equipment from the hydrogen production controller.

S802, judging whether the hydrogen production equipment has a fault.

In the case where it is determined that the hydrogen production apparatus is out of order, step S8016 is executed; in the case where it is determined that the hydrogen production apparatus is not malfunctioning, step S803 is executed.

And S803, judging whether the hydrogen production equipment is in a starting state.

In the case where it is determined that the hydrogen production apparatus is in the start-up state, step S804 is executed; in the case where it is determined that the hydrogen plant is in the stopped state, step S8011 is executed.

S804, judging whether the pressure value of the hydrogen storage equipment is smaller than the pressure value of the hydrogenation equipment.

In the case where it is determined that the pressure value of the hydrogen storage apparatus is smaller than the pressure value of the hydrogenation apparatus, performing step S805; in the case where it is determined that the pressure value of the hydrogen storage means is greater than or equal to the pressure value of the hydrogenation means, step S8015 is performed.

And S805, determining that the hydrogen production pipeline of the hydrogen production equipment hydrogenates to the hydrogenation equipment through the hydrogen compression equipment, and hydrogenates to the hydrogenation equipment from the hydrogen storage equipment.

S806, acquiring a first temperature value and a second temperature value.

S807, judging whether the first temperature value is smaller than a first preset temperature value.

Executing step S809 if it is determined that the first temperature value is smaller than the first preset temperature value; in case it is determined that the first temperature value is greater than or equal to the first preset temperature value, step S808 is performed.

As can be seen from the hydrogen production and hydrogenation system shown in fig. 4, when hydrogen is added to the hydrogenation equipment from the hydrogen production pipeline of the hydrogen production equipment, the hydrogen needs to pass through the hydrogen compression equipment and then pass through the hydrogenation equipment, so that the liquid in the pipeline of the first circulation cooling system in the hydrogen compression equipment can be cooled first, and then the liquid in the pipeline of the second circulation cooling system in the hydrogenation equipment can be cooled. In this way, the cooling rate can be further increased.

And S808, controlling the precooling equipment to cool the liquid in the pipeline of the first circulating cooling system until the temperature is reduced to a third preset temperature value.

And S809, judging whether the second temperature value is smaller than a second preset temperature value.

Returning to re-execute the step S806 when it is determined that the second temperature value is smaller than the second preset temperature value; in case it is determined that the second temperature value is greater than or equal to the second preset temperature value, step S8010 is performed.

S8010, controlling the precooling equipment to cool the liquid in the pipeline of the second circulating cooling system until the temperature is reduced to a fourth preset temperature value.

After step S8010, the flow returns to re-execute step S806.

S8011, hydrogenation from a hydrogen storage device to a hydrogenation device is determined.

S8012, a second temperature value is obtained.

S8013, whether the second temperature value is smaller than a second preset temperature value is judged.

Returning to re-execute the step S8012 when it is determined that the second temperature value is smaller than the second preset temperature value; in case it is determined that the second temperature value is greater than or equal to the second preset temperature value, step S8014 is performed.

S8014, the precooling equipment is controlled to cool the liquid in the pipeline of the second circulating cooling system until the temperature is reduced to a fourth preset temperature value.

After step S8014, the flow returns to re-execute step S8012.

S8015, hydrogenation from the hydrogen storage device to the hydrogenation device is determined.

After step S8015, step S806 is performed.

S8016, early warning of hydrogen production equipment failure is sent out.

As shown in fig. 9, the embodiment of the present application also provides a control device, which can be the same as the control device in the hydrogen production hydrogenation system related to the above embodiment, and is used for executing the control method provided by the embodiment of the present application. The control device includes: an acquisition module 31 and a control module 32.

The obtaining module 31 executes S501 in the above method embodiment, and the control module 32 executes S502 in the above method embodiment.

Specifically, the obtaining module 31 is configured to obtain a first liquid level and/or a second liquid level; the first liquid level is the liquid level of liquid in a pipeline of the first circulating cooling system detected by the first liquid level sensor, and the second liquid level is the liquid level of liquid in a pipeline of the second circulating cooling system detected by the second liquid level sensor; and the control module 32 is used for controlling the liquid supplementing device to supplement liquid to the pipeline of the first circulating cooling system and/or the pipeline of the second circulating cooling system according to the first liquid level and/or the second liquid level.

Optionally, in a possible implementation manner, the obtaining module 31 is further configured to obtain a first temperature value and/or a second temperature value; the first temperature value is the temperature of liquid in a pipeline of the first circulating cooling system detected by the first temperature sensor, and the second temperature value is the temperature of liquid in a pipeline of the second circulating cooling system detected by the second temperature sensor; the control module 32 is further configured to control the first precooling apparatus to cool the liquid in the pipeline of the first circulating cooling system and/or control the second precooling apparatus to cool the liquid in the pipeline of the second circulating cooling system according to the first temperature value and/or the second temperature value acquired by the acquisition module.

Optionally, the control device may further include a storage module, and the storage module is configured to store a program code of the control device, and the like.

As shown in fig. 10, the present embodiment also provides a control device, which includes a memory 41, a processor 42(42-1 and 42-2), a bus 43, and a communication interface 44; the memory 41 is used for storing computer execution instructions, and the processor 42 is connected with the memory 41 through a bus 43; when the control device is operating, the processor 42 executes computer-executable instructions stored by the memory 41 to cause the control device to perform the control method provided in the above-described embodiments.

In particular implementations, processor 42 may include one or more Central Processing Units (CPUs), such as CPU0 and CPU1 shown in FIG. 10, as one embodiment. And, as an example, the control device may include a plurality of processors 42, such as processor 42-1 and processor 42-2 shown in fig. 10. Each of the processors 42 may be a single-Core Processor (CPU) or a multi-Core Processor (CPU). Processor 42 may refer herein to one or more devices, circuits, and/or processing cores that process data (e.g., computer program instructions).

The memory 41 may be, but is not limited to, a read-only memory 41 (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 41 may be self-contained and coupled to the processor 42 via a bus 43. The memory 41 may also be integrated with the processor 42.

In a specific implementation, the memory 41 is used for storing data in the present application and computer-executable instructions corresponding to software programs for executing the present application. The processor 42 may control various functions of the device by running or executing software programs stored in the memory 41, as well as invoking data stored in the memory 41.

The communication interface 44 is any device, such as a transceiver, for communicating with other devices or communication networks, such as a control system, a Radio Access Network (RAN), a Wireless Local Area Network (WLAN), and the like. The communication interface 44 may include a receiving unit implementing a receiving function and a transmitting unit implementing a transmitting function.

The bus 43 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an extended ISA (enhanced industry standard architecture) bus, or the like. The bus 43 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 10, but this is not intended to represent only one bus or type of bus.

As an example, in connection with fig. 9, the acquiring means in the control apparatus implements the same function as that implemented by the receiving unit in fig. 10, the control means in the control apparatus implements the same function as that implemented by the processor in fig. 10, and the storage means in the control apparatus implements the same function as that implemented by the memory in fig. 10.

For the explanation of the related contents in this embodiment, reference may be made to the above method embodiments, which are not described herein again.

Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.

The embodiment of the present application further provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed by a computer, the computer is enabled to execute the control method provided by the foregoing embodiment.

The computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a RAM, a ROM, an erasable programmable read-only memory (EPROM), a register, a hard disk, an optical fiber, a CD-ROM, an optical storage device, a magnetic storage device, any suitable combination of the foregoing, or any other form of computer readable storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuit (ASIC). In embodiments of the present application, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A hydrogen production and hydrogenation system is characterized by comprising hydrogen compression equipment, hydrogenation equipment, liquid supplementing equipment and control equipment; the hydrogen compression equipment comprises a first circulating cooling system, and the hydrogenation equipment comprises a second circulating cooling system; a first liquid level sensor is arranged in a pipeline of the first circulating cooling system, and a second liquid level sensor is arranged in a pipeline of the second circulating cooling system;

the control device is configured to:

acquiring a first liquid level and/or a second liquid level; the first liquid level is the liquid level of the liquid in the pipeline of the first circulating cooling system detected by the first liquid level sensor, and the second liquid level is the liquid level of the liquid in the pipeline of the second circulating cooling system detected by the second liquid level sensor;

and controlling the liquid supplementing equipment to supplement liquid to the pipeline of the first circulating cooling system and/or the pipeline of the second circulating cooling system according to the first liquid level and/or the second liquid level.

2. The hydrogen production and hydrogenation system of claim 1, further comprising a hydrogen production device and a hydrogen production controller for controlling the operating state of the hydrogen production device;

the control device is specifically configured to:

under the condition that the running state is determined to be a starting state, acquiring the first liquid level and the second liquid level;

and acquiring the second liquid level when the running state is determined to be the stop state.

3. The hydrogen production hydrogenation system of claim 2, wherein the control device is specifically configured to:

after the first liquid level and the second liquid level are obtained, controlling the liquid supplementing equipment to supplement liquid to the pipeline of the first circulating cooling system under the condition that the first liquid level is determined to be lower than or equal to a first preset liquid level and the second liquid level is determined to be higher than a second preset liquid level;

controlling the liquid supplementing equipment to supplement liquid to the pipeline of the second circulating cooling system under the condition that the second liquid level is determined to be lower than or equal to the second preset liquid level and the first liquid level is determined to be higher than the first preset liquid level;

and under the condition that the first liquid level is determined to be lower than or equal to the first preset liquid level and the second liquid level is determined to be lower than or equal to the second preset liquid level, controlling the liquid supplementing equipment to supplement liquid to the pipeline of the first circulating cooling system and the pipeline of the second circulating cooling system.

4. The hydrogen production hydrogenation system of claim 2, wherein the control device is specifically configured to:

after the second liquid level is obtained, under the condition that the second liquid level is determined to be lower than or equal to a second preset liquid level, controlling the liquid supplementing equipment to supplement liquid to the pipeline of the second circulating cooling system.

5. The hydrogen production and hydrogenation system according to any one of claims 1 to 4, wherein a first temperature sensor and a first pre-cooling device are further arranged in the pipeline of the first circulating cooling system, and a second temperature sensor and a second pre-cooling device are further arranged in the pipeline of the second circulating cooling system;

the control device is further configured to:

acquiring a first temperature value and/or a second temperature value; the first temperature value is the temperature of the liquid in the pipeline of the first circulating cooling system detected by the first temperature sensor, and the second temperature value is the temperature of the liquid in the pipeline of the second circulating cooling system detected by the second temperature sensor;

6. The hydrogen production and hydrogenation system of claim 5, further comprising a hydrogen production device and a hydrogen production controller for controlling the operating state of the hydrogen production device;

the control device is further configured to:

under the condition that the running state is determined to be the starting state, acquiring the first temperature value and the second temperature value;

and acquiring the second temperature value under the condition that the running state is determined to be a stop state.

7. A control method is applied to a hydrogen production and hydrogenation system and is characterized by comprising the following steps:

acquiring a first liquid level and/or a second liquid level; the first liquid level is the liquid level of liquid in a pipeline of a first circulating cooling system detected by a first liquid level sensor, and the second liquid level is the liquid level of liquid in a pipeline of a second circulating cooling system detected by a second liquid level sensor;

and controlling a liquid supplementing device to supplement liquid to the pipeline of the first circulating cooling system and/or the pipeline of the second circulating cooling system according to the first liquid level and/or the second liquid level.

8. The control method according to claim 7, wherein said acquiring a first level and/or a second level comprises:

under the condition that the running state of the hydrogen production equipment is determined to be a starting state, acquiring the first liquid level and the second liquid level;

9. The control method according to claim 8, wherein after the obtaining of the first liquid level and the second liquid level, controlling a liquid replenishment device to replenish a pipe of the first circulating cooling system and/or a pipe of the second circulating cooling system according to the first liquid level and the second liquid level comprises:

under the condition that the first liquid level is determined to be lower than or equal to a first preset liquid level and the second liquid level is determined to be higher than a second preset liquid level, controlling the liquid supplementing equipment to supplement liquid to the pipeline of the first circulating cooling system;

10. The control method according to claim 8, wherein after the obtaining of the second liquid level, controlling a liquid replenishing device to replenish liquid to a pipe of the second circulating cooling system according to the second liquid level comprises:

and controlling the liquid supplementing equipment to supplement liquid to the pipeline of the second circulating cooling system under the condition that the second liquid level is determined to be lower than or equal to a second preset liquid level.

11. The control method according to any one of claims 7 to 10, characterized in that the method further comprises:

and controlling a first precooling device to cool the liquid in the pipeline of the first circulating cooling system and/or controlling a second precooling device to cool the liquid in the pipeline of the second circulating cooling system according to the first temperature value and/or the second temperature value.

12. The control method according to claim 11, wherein the obtaining the first temperature value and/or the second temperature value comprises:

under the condition that the operation state of the hydrogen production equipment is determined to be a starting state, acquiring the first temperature value and the second temperature value;

13. A control device, comprising:

the acquisition module is used for acquiring a first liquid level and/or a second liquid level; the first liquid level is the liquid level of liquid in a pipeline of a first circulating cooling system detected by a first liquid level sensor, and the second liquid level is the liquid level of liquid in a pipeline of a second circulating cooling system detected by a second liquid level sensor;

and the control module is used for controlling liquid supplementing equipment to supplement liquid to the pipeline of the first circulating cooling system and/or the pipeline of the second circulating cooling system according to the first liquid level and/or the second liquid level acquired by the acquisition module.