CN221940638U - Electrolyte hydrogen production system and cooling device thereof - Google Patents

Abstract

The utility model discloses an electrolyte hydrogen production system and a cooling device thereof, wherein the system comprises: the liquid inlet pipe group comprises a liquid supply main pipe and liquid supply branch pipes, the outlet of each liquid supply main pipe is communicated with the inlet of at least one liquid supply branch pipe, the outlets of all liquid supply branch pipes are communicated with the cooling liquid inlets of the same power supply or an electrolytic tank, and the liquid supply main pipes can be independently opened and closed; the liquid outlet pipe group comprises liquid outlet main pipes and liquid outlet branch pipes, the inlet of each liquid outlet main pipe is communicated with the outlet of at least one liquid outlet branch pipe, the inlets of all liquid outlet main pipes are communicated with the cooling liquid outlets of the same power supply or electrolytic tank, and the liquid outlet main pipes can be independently opened and closed; the number of the liquid supply main pipes and the liquid supply branch pipes is multiple, and/or the number of the liquid outlet main pipes and the liquid outlet branch pipes is multiple. Therefore, the temperature of the cooling liquid at each position in the power supply or the electrolytic tank is more uniform, the heat dissipation effect is improved, the probability of overheat faults of the power supply or the electrolytic tank is reduced, and the reliability of the electrolyte hydrogen production system is improved.

Description

An electrolyte hydrogen production system and cooling device thereof

Technical Field

The utility model relates to the technical field of hydrogen production, in particular to an electrolyte hydrogen production system and a cooling device thereof.

Background Art

Hydrogen energy is a clean and efficient energy source. Compared with other energy sources, it has the highest energy density. It is renewable, convertible, compressible, storable and transportable. It is often used in industry, transportation, power generation, nuclear energy and other fields.

At present, many hydrogen production stations are under construction. With the continuous upgrading and development of hydrogen production equipment, the gas production of a single hydrogen production equipment is increasing, and the power and heat production of hydrogen production power are also increasing with the development and improvement. Therefore, a cooling device is needed to cool the power supply and/or electrolyzer. For a single hydrogen production equipment, its cooling device includes water tanks, pipelines and other components. With the continuous increase in its gas production, the existing cooling pipeline design is simple and can no longer meet the refrigeration requirements of a single hydrogen production equipment.

Utility Model Content

The utility model aims to provide an electrolyte hydrogen production system and a cooling device thereof, so as to improve the cooling effect of the same electrolytic cell or power supply and the reliability of the electrolyte hydrogen production system.

In order to achieve the above purpose, the utility model provides the following technical solutions:

A cooling device for an electrolyte hydrogen production system, comprising:

A liquid inlet pipe group, including a liquid supply main pipe and liquid supply branches, the outlet of each liquid supply main pipe is connected to the inlet of at least one liquid supply branch pipe, the outlets of all liquid supply branches are connected to the coolant inlet of the same power source or electrolytic cell, and the liquid supply main pipe can be opened and closed individually;

A liquid outlet pipe group, including a liquid outlet main pipe and liquid outlet branch pipes, the inlet of each liquid outlet main pipe is connected to the outlet of at least one liquid outlet branch pipe, the inlets of all liquid outlet main pipes are connected to the same power source or the coolant outlet of the electrolytic cell, and the liquid outlet main pipes can be opened and closed individually;

There are multiple liquid supply main pipes and multiple liquid supply branch pipes, and/or there are multiple liquid outlet main pipes and multiple liquid outlet branch pipes.

When there are multiple liquid supply main pipes and liquid supply branch pipes, multiple liquid supply branch pipes are connected to the cooling pipe of the same power source or electrolyzer. In this way, by supplying coolant to the same power source or electrolyzer through multiple liquid supply branch pipes, the coolant temperature at various positions in the power source or electrolyzer can be made more uniform, and the heat dissipation effect can be made more uniform, thereby improving the heat dissipation effect, reducing the probability of failure of the power source or electrolyzer due to overheating, and improving the reliability of the electrolyte hydrogen production system.

When there are multiple liquid outlet main pipes and liquid outlet branch pipes, multiple liquid outlet branch pipes are connected to the cooler of the same power supply or electrolytic cell, and the coolant of the same power supply or electrolytic cell is discharged through the multiple liquid outlet branch pipes and the liquid outlet main pipe, thereby reducing the resistance of the cooler of the power supply or electrolytic cell, making the liquid outlet of the same power supply or electrolytic cell smoother, thereby making the coolant entering the above-mentioned power supply or electrolytic cell smoother, and improving the cooling effect of the power supply or electrolytic cell.

In addition, both the liquid outlet main pipe and the liquid supply main pipe can be opened and closed separately. When the power supply is not running at full load, part of the liquid supply main pipe or part of the liquid outlet main pipe can be closed to reduce the supply of coolant, so that the amount of coolant entering the power supply or the electrolyzer matches the cooling demand of the power supply, which not only ensures the reliable cooling of the power supply, but also saves energy, making the operation of the entire electrolyte hydrogen production system more flexible and reliable.

In one implementation, a shut-off valve and/or a flow meter is provided on the liquid supply main pipe to adjust the opening and closing of the liquid supply main pipe, which is convenient for operation, and the supply of the coolant can be determined by monitoring the liquid flow in the liquid supply main pipe at any time to ensure the cooling effect; and/or,

A stop valve is provided on the liquid outlet main pipe to adjust the opening and closing of the liquid outlet main pipe for easy operation.

In one implementation, a shutoff valve and/or a regulating valve is provided on the liquid supply branch pipe, and the opening and closing of the liquid outlet main pipe is regulated by controlling the on and off of the shutoff valve, which is simple and convenient to operate. Alternatively, the opening of the regulating valve on the liquid supply branch pipe is appropriately adjusted according to the load of the power supply or the electrolytic cell, thereby adjusting the amount of coolant entering the cooler of the power supply or the electrolytic cell, so as to ensure the cooling effect of the power supply or the electrolytic cell while saving energy.

The cooling device also includes a controller, which is communicatively connected with the regulating valve.

In one implementation, the outlet of the liquid supply main pipe is connected to the inlet of one or two liquid supply branch pipes; and/or,

The inlet of the liquid outlet main pipe is connected to the outlet of one or two liquid outlet branches. In this way, the number of liquid supply branches or liquid outlet branches connected to the liquid supply main pipe or the liquid outlet main pipe is small, so the diameter of each liquid supply main pipe or liquid outlet main pipe can be appropriately reduced, thereby making it easier to flexibly control the coolant flow of the liquid supply main pipe, and making the coolant entering the multiple liquid supply branches more evenly distributed, so that the cooling efficiency of the power supply or electrolytic cell is higher.

In one implementation, it also includes an intermediate connecting pipe, the outlet of which is connected to the inlet of all the liquid supply main pipes;

A heat exchanger is arranged on the intermediate connecting pipe, and the heat exchanger can cool the coolant flowing through the intermediate connecting pipe, so that the cooled coolant cools the power source or the electrolytic cell, further ensuring the cooling effect.

In one implementation, a first inlet pipe and a second inlet pipe are connected in parallel between the inlet of the intermediate connecting pipe and the liquid supply device, and a first liquid replenishing pump is provided on the first inlet pipe, and a second liquid replenishing pump is provided on the second inlet pipe, so as to ensure the reliability of the coolant supply and prevent the cooling device from being shut down for maintenance when the liquid replenishing pump fails;

The first refill pump and the second refill pump are variable frequency pumps, and both the first refill pump and the second refill pump can be connected to the controller for communication, and the flow ratio of the first refill pump and the second refill pump is adjusted by the controller, so that the power of the first refill pump and the second refill pump matches the cooling demand of the power supply or the electrolyzer. Alternatively, the first refill pump is a variable frequency pump and the second refill pump is a fixed frequency pump, so as to reduce the cost while ensuring the flow regulation of the coolant.

In one implementation, a one-way valve is further provided on the first inlet pipe and/or the second inlet pipe to prevent the coolant in the first inlet pipe and/or the second inlet pipe from flowing back.

In one implementation, a pressure detection element, a flow detection element and/or a temperature detection element are provided on the intermediate connecting pipe to judge whether the cooling device is working normally at any time, thereby improving the reliability of the cooling device;

The temperature sensing element is located downstream of the heat exchanger, and/or the pressure sensing element is located upstream of the heat exchanger.

In one implementation, the pressure detection element is a pressure transmitter, the flow detection element is a flow transmitter, and the temperature detection element is a temperature transmitter;

The cooling device also includes a controller, which is connected to the first infusion pump, the second infusion pump, the pressure transmitter, the flow transmitter and/or the temperature transmitter. After receiving the detection signal from the pressure transmitter, the flow transmitter and/or the temperature transmitter, the controller controls the working state of the first infusion pump and the second infusion pump according to the received pressure information, temperature information and/or flow information, and then adjusts the flow rate of the coolant to ensure the cooling effect of the power supply or the electrolytic cell.

In one implementation, the liquid supply device further comprises a liquid supply device, the outlet of the liquid supply device is connected to the inlet of the liquid supply main pipe, the inlet of the liquid supply device is connected to the outlet of the liquid outlet main pipe, and the liquid supply device can continuously supply coolant to the liquid supply main pipe, thereby ensuring the circulation of the coolant;

The liquid supply device is a liquid storage tank, which has a simple structure and low cost.

A system for producing hydrogen from electrolyte, such as the cooling device described in any one of the above, the cooling device is used to cool a single power source or a single electrolyzer of the system for producing hydrogen from electrolyte.

Compared with the prior art, the beneficial effects of the electrolyte hydrogen production system provided by the embodiment of the utility model are the same as the beneficial effects of the above-mentioned cooling device, which will not be elaborated here.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

FIG1 is a schematic diagram of a one-inlet and two-outlet embodiment provided by an embodiment of the utility model;

FIG2 is a schematic diagram of a one-input and four-output embodiment provided by an embodiment of the utility model;

FIG3 is a schematic diagram of a two-input and one-output embodiment provided by an embodiment of the utility model;

FIG4 is a schematic diagram of a four-input and one-output embodiment provided by an embodiment of the present utility model;

FIG5 is a schematic diagram of a two-input and two-output embodiment provided by an embodiment of the utility model;

FIG6 is a schematic diagram of a four-input and four-output embodiment provided by an embodiment of the utility model.

Reference numerals:

1-liquid storage tank, 2-first inlet pipe, 3-first liquid replenishing pump, 4-second inlet pipe, 5-second liquid replenishing pump, 6-check valve, 7-pressure transmitter, 8-heat exchanger, 9-temperature transmitter, 10-liquid supply main pipe, 11-liquid supply branch pipe, 12-stop valve, 13-regulating valve, 14-liquid outlet branch pipe, 15-liquid outlet main pipe, 16-power supply, 17-controller, 18-intermediate connecting pipe, 19-flow meter.

DETAILED DESCRIPTION

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

At present, as the gas production of a single hydrogen production equipment continues to increase, the power supply 16 of a single hydrogen production equipment has a large power and a high temperature, and the cooling device of a single hydrogen production equipment only includes one liquid inlet pipe and one liquid outlet pipe. The coolant enters the cooler of the power supply 16 through the one liquid inlet pipe, cools the power supply 16, and then flows out through the one liquid outlet pipe. In this way, for a single hydrogen production equipment with a large gas production volume, only one liquid inlet pipe and one liquid outlet pipe are used to dissipate the heat of the power supply 16, which will cause the heat dissipation effect of some parts of the power supply 16 to be poor, and the cooling effect of the power supply 16 is not good, which will make the failure rate of the single hydrogen production equipment high, affecting the safe, economical and stable operation of the entire hydrogen production system.

In view of the above situation, please refer to Figures 1-6. The cooling device of the electrolyte hydrogen production system provided in the embodiment of the utility model is mainly used to cool the power supply 16 or electrolyzer of a single hydrogen production equipment. The cooling device includes a liquid inlet pipe group and a liquid outlet pipe group. Among them, the liquid inlet pipe group includes a liquid supply main pipe 10 and a liquid supply branch pipe 11, and the outlet of each liquid supply main pipe 10 is connected to the inlet of at least one liquid supply branch pipe 11, that is, each liquid supply main pipe 10 is connected to one or more liquid supply branches 11. The outlets of all liquid supply branches 11 are connected to the coolant inlet of the same power supply 16 or electrolyzer, that is, the coolant of all liquid supply branches 11 enters the cooler of the same power supply 16 or electrolyzer, and the coolant enters the cooler of the same power supply 16 or electrolyzer to absorb the heat of the power supply 16 or electrolyzer to cool the power supply 16 or electrolyzer. The liquid supply main pipes 10 can be opened and closed individually, that is, each liquid supply main pipe 10 can be controlled to be opened or cut off individually, and the flow state of the remaining liquid supply main pipes 10 will not be affected after one liquid supply main pipe 10 is cut off.

The liquid outlet pipe group includes a liquid outlet main pipe 15 and liquid outlet branch pipes 14, and the inlet of each liquid outlet main pipe 15 is connected to the outlet of at least one liquid outlet branch pipe 14, that is, each liquid outlet main pipe 15 is connected to one or more liquid outlet branch pipes 14. The inlets of all liquid outlet main pipes 15 are connected to the coolant outlet of the same power source 16 or electrolytic cell, that is, the coolant in the cooler of the same power source 16 or electrolytic cell flows out and enters all liquid outlet branch pipes 14 respectively. The liquid outlet main pipe 15 can be opened and closed individually, that is, each liquid outlet main pipe 15 can be controlled to be opened or cut off individually, and the flow state of the remaining liquid outlet main pipes 15 will not be affected after one liquid outlet main pipe 15 is cut off.

There are multiple liquid supply branches 11, and/or there are multiple liquid outlet branches 14. When there are multiple liquid supply main pipes 10 and multiple liquid supply branches 11, multiple liquid supply branches 11 are connected to the cooling pipe of the same power source 16 or electrolyzer. In this way, by supplying coolant to the same power source 16 or electrolyzer through multiple liquid supply branches 11, the coolant temperature at each position in the power source 16 or electrolyzer can be made more uniform, and the heat dissipation effect can be made more uniform, thereby improving the heat dissipation effect, reducing the probability of failure of the power source 16 or electrolyzer due to overheating, and improving the reliability of the electrolyte hydrogen production system.

When there are multiple liquid outlet main pipes 15 and liquid outlet branch pipes 14, multiple liquid outlet branch pipes 14 are connected to the cooler of the same power supply 16 or electrolytic cell, and the coolant of the same power supply 16 or electrolytic cell is discharged through the multiple liquid outlet branch pipes 14 and the liquid outlet main pipe 15, thereby reducing the resistance of the cooler of the power supply 16 or electrolytic cell, making the liquid outlet of the same power supply 16 or electrolytic cell smoother, thereby making the coolant entering the above-mentioned power supply 16 or electrolytic cell smoother, and improving the cooling effect of the power supply 16 or electrolytic cell.

In addition, the liquid outlet main pipe 15 and the liquid supply main pipe 10 can be opened and closed separately. When the power supply 16 does not reach full load operation, part of the liquid supply main pipe 10 or part of the liquid outlet main pipe 15 can be closed to reduce the supply of coolant, thereby matching the amount of coolant entering the power supply 16 or the electrolyzer with the cooling demand of the power supply 16, which not only ensures reliable cooling of the power supply 16, but also saves energy, making the operation of the entire electrolyte hydrogen production system more flexible and reliable.

As shown in FIG3 and FIG4, in order to facilitate the control of the opening and closing of the liquid supply main pipe 10, a stop valve 12 can be set on the liquid supply main pipe 10, and the opening and closing of the liquid supply main pipe 10 can be adjusted by opening or closing the stop valve 12, which is convenient for operation. Of course, the opening and closing of the liquid supply main pipe 10 can also be controlled by other methods, such as by separating the liquid supply main pipe 10 from the liquid supply branch pipe 11, and blocking the ports of the liquid supply branch pipe 11 and the liquid supply main pipe 10. In this scheme, according to the load of the power supply 16 or the electrolytic cell, the stop valves 12 of some liquid supply main pipes 10 can be closed, so as to achieve a state in which a part of the liquid supply main pipes 10 are opened and the rest of the liquid supply main pipes 10 are closed, so as to match the cooling demand of the power supply 16.

Furthermore, in order to detect the liquid flow in the liquid supply main pipe 10 at any time, a flow meter 19 can be provided on the liquid supply main pipe 10 to monitor the liquid flow in the liquid supply main pipe 10 at any time to determine the supply situation of the coolant and ensure the cooling effect.

In this embodiment, in order to facilitate the control of the opening and closing of the liquid outlet main pipe 15, a stop valve 12 can also be set on the liquid outlet main pipe 15, and the opening and closing of the liquid outlet main pipe 15 can be adjusted by controlling the opening and closing of the stop valve 12, which is simple and convenient to operate. In this way, according to the load of the power supply 16 or the electrolytic cell, the stop valves 12 of some liquid outlet main pipes 15 can be closed, so as to achieve a state in which a part of the liquid outlet main pipes 15 are opened and the rest of the liquid outlet main pipes 15 are closed, so as to match the cooling demand of the power supply 16. Of course, the opening and closing of the liquid outlet main pipe 15 can also be controlled by other methods, such as by separating the liquid outlet main pipe 15 from the liquid outlet branch pipe 14 and blocking the ports of the liquid outlet branch pipe 14 and the liquid outlet main pipe 15.

As shown in Fig. 1-Fig. 2, in order to facilitate the control of the opening and closing of the liquid supply branch pipe 11, a stop valve 12 can be provided on each liquid supply branch pipe 11, and the opening and closing of the liquid supply branch pipe 11 can be adjusted by controlling the on and off of the stop valve 12, which is simple and convenient to operate. In this way, the stop valves 12 on some liquid supply branch pipes 11 can be closed according to the load of the power supply 16 or the electrolytic cell, so that a part of the liquid supply branch pipes 11 are opened and the other liquid supply branch pipes 11 are closed, which is convenient for operation.

Alternatively, the liquid supply branch pipe 11 may also be provided with a regulating valve 13 with an adjustable opening, so that the opening of the regulating valve 13 on the liquid supply branch pipe 11 can be appropriately adjusted according to the load of the power source 16 or the electrolytic cell, thereby adjusting the amount of coolant entering the power source 16 or the electrolytic cell cooler to ensure the cooling effect of the power source 16 or the electrolytic cell while saving energy. The cooling device may also include a controller 17, which may be communicatively connected to the regulating valve 13 connected to the liquid supply branch pipe 11, so that the opening of the regulating valve 13 is adjusted by using the controller 17, thereby reducing the intensity of manual labor and improving intelligent management.

In another preferred embodiment, the outlet of the liquid supply main pipe 10 is connected to the inlet of one or two liquid supply branches 11. As shown in FIGS. 1 to 3, the outlet of one liquid supply main pipe 10 is connected to the inlet of one liquid supply branch pipe 11. As shown in FIGS. 4 and 6, the outlet of one liquid supply main pipe 10 is connected to the inlet of two liquid supply branches 11. With such a configuration, the number of liquid supply branches 11 connected to the liquid supply main pipe 10 is small, so the diameter of each liquid supply main pipe 10 can be appropriately reduced, thereby making it easier to flexibly control the coolant flow rate of the liquid supply main pipe 10, and making the coolant entering the multiple liquid supply branches 11 more evenly distributed, so that the cooling efficiency of the power supply 16 or the electrolytic cell is higher. Of course, the outlet of one liquid supply main pipe 10 is connected to the inlet of three, four or more liquid supply branches 11, which is also within the protection scope of the present application.

In the above embodiment, the number of the liquid supply main pipes 10 can be set according to actual conditions, and can be one, two, three or more.

In addition, the inlet of the liquid outlet main pipe 15 is connected to the outlet of one or two liquid outlet branches 14. As shown in Figures 1, 3 and 4, the inlet of a liquid outlet main pipe 15 is connected to the outlet of a liquid outlet branch 14, and as shown in Figures 2 and 6, the inlet of a liquid outlet main pipe 15 is connected to the outlets of two liquid outlet branches 14. In this way, the number of liquid outlet branches 14 connected to the liquid outlet main pipe 15 is small, so the diameter of each liquid outlet main pipe 15 can be appropriately reduced, which makes it easier to flexibly control the coolant flow rate of the liquid outlet main pipe 15, and makes the coolant entering the multiple liquid outlet branches 14 more evenly distributed, so that the cooling effect of the power supply 16 or the electrolytic cell is more uniform. Of course, the outlet of a liquid outlet main pipe 15 is connected to the inlet of three, four or more liquid outlet branches 14, which is also within the protection scope of the present application.

In the above embodiment, the number of the liquid outlet main pipes 15 can be set according to actual conditions, and can be one, two, three or more.

Exemplarily, as shown in FIG1, the cooling device includes a liquid supply main pipe 10 and a liquid supply branch pipe 11, and the number of the liquid outlet main pipe 15 and the number of the liquid outlet branch pipe 14 are both two, and one liquid outlet branch pipe 14 is connected to one liquid outlet main pipe 15; as shown in FIG2, the cooling device includes a liquid supply main pipe 10 and a liquid supply branch pipe 11, the number of the liquid outlet main pipe 15 is two, the number of the liquid outlet branch pipes 14 is four, and two liquid outlet branches 14 are connected to one liquid outlet main pipe 15; as shown in FIG3, the cooling device includes two liquid supply main pipes 10 and two liquid supply branch pipes 11, one liquid supply main pipe 10 is connected to one liquid supply branch pipe 11, and the number of the liquid outlet main pipe 15 and the number of the liquid outlet branch pipe 14 are both one; as shown in FIG4, the cooling device includes two liquid supply main pipes A main pipe 10 and four liquid supply branches 11, one liquid supply main pipe 10 is connected to two liquid supply branches 11, and the number of its liquid outlet main pipe 15 and liquid outlet branch pipe 14 is both one; as shown in Figure 5, the cooling device includes two liquid supply main pipes 10 and two liquid supply branch pipes 11, one liquid supply main pipe 10 is connected to one liquid supply branch pipe 11, and the number of its liquid outlet main pipe 15 and liquid outlet branch pipe 14 is both two, and one liquid outlet branch pipe 14 is connected to one liquid outlet main pipe 15; as shown in Figure 5, the cooling device includes two liquid supply main pipes 10 and four liquid supply branch pipes 11, one liquid supply main pipe 10 is connected to two liquid supply branch pipes 11, the number of its liquid outlet main pipe 15 is two, the number of liquid outlet branch pipes 14 is four, and one liquid outlet main pipe 15 is connected to two liquid outlet branches 14.

As shown in FIG1 , the cooling device further includes an intermediate connecting pipe 18, which is used to connect the liquid supply device and all the liquid supply main pipes 10. Specifically, the outlet of the intermediate connecting pipe 18 is connected to the inlet of all the liquid supply main pipes 10, and the inlet of the intermediate connecting pipe 18 can be connected to the liquid supply device. In order to ensure that the temperature of the coolant entering the power supply 16 or the electrolytic cell cooler is low, a heat exchanger 8 is also provided on the intermediate connecting pipe 18. The heat exchanger 8 can cool the coolant flowing through the intermediate connecting pipe 18. The coolant is cooled in the heat exchanger 8. The cooled coolant then enters the liquid supply main pipe 10 and the liquid supply branch pipe 11 in turn, and finally enters the power supply 16 or the electrolytic cell cooler to absorb heat. In this way, the cooled coolant cools the power supply 16 or the electrolytic cell, further ensuring the cooling effect.

In the above technical solution, the inlet and outlet of the heat exchanger 8 are connected in series to the intermediate connecting pipe 18, and the heat exchanger 8 can be connected to a waste heat recovery component to recover the heat of the coolant using the waste heat recovery component to avoid capacity waste. The waste heat recovery component can be a hot liquid device or other components.

Furthermore, a first inlet pipe 2 and a second inlet pipe 4 are connected in parallel between the inlet of the intermediate connecting pipe 18 and the liquid supply device. The inlet of the first inlet pipe 2 is connected to the outlet of the liquid supply device, and the outlet of the first inlet pipe 2 is connected to the inlet of the intermediate connecting pipe 18. The inlet of the second inlet pipe 4 is connected to the outlet of the liquid supply device, and the outlet of the second inlet pipe 4 is connected to the inlet of the intermediate connecting pipe 18. The first inlet pipe 2 and the second inlet pipe 4 are connected in parallel, and a first liquid replenishment pump 3 is provided on the first inlet pipe 2, and a second liquid replenishment pump 5 is provided on the second inlet pipe 4. In this way, during the cooling process, one of the first liquid replenishment pump 3 and the second liquid replenishment pump 5 can work normally, and the other of the first liquid replenishment pump 3 and the second liquid replenishment pump 5 can be shut down for standby. When the first liquid replenishment pump 3 fails, the second liquid replenishment pump 5 can be started, and when the second liquid replenishment pump 5 fails, the first liquid replenishment pump 3 can be started. Such a configuration ensures the reliability of the coolant supply and prevents the cooling device from being shut down for maintenance when the liquid replenishment pump fails. Of course, during the cooling process, the first replenishing pump 3 and the second replenishing pump 5 can also work simultaneously, so that the coolant flow power is greater, the supply of coolant is guaranteed, and insufficient coolant is prevented from affecting the cooling effect.

Among them, the first refill pump 3 and the second refill pump 5 can both be variable frequency pumps, and the variable frequency pump can be used to smoothly and linearly control the total amount of coolant to prevent the flow of coolant from being interrupted. As shown in Figures 1-6, when the first refill pump 3 and the second refill pump 5 are both variable frequency pumps, the first refill pump 3 and the second refill pump 5 can both be connected to the controller 17 for communication, and the flow ratio of the first refill pump 3 and the second refill pump 5 is adjusted by the controller 17, so that the power of the first refill pump 3 and the second refill pump 5 matches the cooling demand of the power supply 16 or the electrolytic cell. In addition, only one of the first refill pump 3 and the second refill pump 5 can work normally, and the other of the first refill pump 3 and the second refill pump 5 can be used as a standby, and the flow ratio of the working refill pump matches the cooling demand of the power supply 16 or the electrolytic cell. When the working refill pump fails, the standby refill pump restarts, which does not affect the normal operation of the cooling device, thereby improving the reliability of the cooling device.

Taking into account that the first rehydration pump 3 and the second rehydration pump 5 are both variable frequency pumps, which has a relatively high cost, the first rehydration pump 3 can be a variable frequency pump and the second rehydration pump 5 can be a fixed frequency pump. In this way, during the cooling process, the first rehydration pump 3 is communicated with the controller 17, and the flow ratio of the first rehydration pump 3 is adjusted by the controller 17 to match the power of the first rehydration pump 3 with the power supply 16 or the cooling requirement of the electrolytic cell. The second rehydration pump 5 is shut down for standby. When the first rehydration pump 3 fails, the second rehydration pump 5 is started again, thereby reducing costs while ensuring the flow regulation of the coolant.

In addition, the two fluid replenishment pumps can be started at the same time. Since the adjustment range and adjustment precision of a variable frequency pump or a fixed frequency pump are limited, when the other fluid replenishment pump works at the same time, the threshold and precision of the output liquid flow can be increased.

Of course, the technical solution of only providing one inlet pipe and one infusion pump is also within the protection scope of the present utility model.

In addition, in order to prevent the coolant in the first inlet pipe 2 and/or the second inlet pipe 4 from flowing back, a one-way valve 6 may be provided on the first inlet pipe 2 and/or the second inlet pipe 4 to ensure that the coolant flows smoothly into the intermediate connecting pipe 18 .

In another embodiment, a pressure detection member is provided on the intermediate connecting pipe 18, and the hydraulic pressure in the intermediate connecting pipe 18 can be detected at any time by the pressure detection member, so as to judge whether the cooling device is working normally at any time, thereby improving the reliability of the cooling device. Specifically, the pressure detection member can be located upstream of the heat exchanger 8, so as to ensure the pressure of the coolant entering the heat exchanger 8 by the pressure detection member.

In order to detect the temperature of the coolant, a temperature detection element may be provided on the intermediate connecting pipe 18, and the temperature of the coolant in the intermediate connecting pipe 18 may be monitored at any time by the temperature detection element to prevent the temperature of the coolant in the intermediate connecting pipe 18 from being too high and affecting the cooling effect. The temperature detection element may be located downstream of the heat exchanger 8, so as to judge the heat exchange effect of the heat exchanger 8 according to the temperature detected by the temperature detection element. Of course, the temperature detection element may also be provided on multiple liquid supply branches 11, which is not limited here.

In addition, a flow detection component is also provided on the intermediate connecting pipe 18, through which the liquid flow inside can be detected at any time, and whether the cooling device is working normally can be judged at any time, thereby improving the reliability of the cooling device.

In order to facilitate remote control, the pressure detection component can be a pressure transmitter 7, the flow detection component can be a flow transmitter, and the temperature detection component can be a temperature transmitter 9. As shown in Figures 1 to 6, the cooling device also includes a controller 17, which is communicatively connected with the first infusion pump 3, the second infusion pump 5, the pressure transmitter 7, the flow transmitter and/or the temperature transmitter 9. The dotted lines in Figures 1 to 6 indicate that each component is communicatively connected with the controller 17. After the controller 17 receives the detection signal from the pressure transmitter 7, the flow transmitter and/or the temperature transmitter 9, the controller 17 controls the working state of the first infusion pump 3 and the second infusion pump 5 according to the received pressure information, temperature information and/or flow information, and then adjusts the coolant flow to ensure the cooling effect of the power supply 16 or the electrolytic cell.

The controller 17 can also be communicated with the regulating valve 13 connected to the liquid supply branch pipe 11. In this way, the controller 17 can also adjust the opening of the regulating valve 13 according to the received pressure information, temperature information and/or flow information, and can adjust the amount of coolant entering the same electrolytic cell or power supply 16 in real time to improve the cooling effect.

In the above embodiment, the controller 17 may be a programmable logic controller 17 (PLC), which has the advantages of convenient programming, programmable on-site modification, high reliability, small size, etc. Of course, the controller 17 may also be other types of controllers, which are not limited here.

The cooling device may further include a liquid supply device, the outlet of the liquid supply device is connected to the inlet of the liquid supply main pipe 10, and the inlet of the liquid supply device is connected to the outlet of the liquid outlet main pipe 15. When the cooling device includes an intermediate connecting pipe 18, the intermediate connecting pipe 18 is arranged on the pipeline between the outlet of the liquid supply device and the inlet of the liquid supply main pipe 10, and the liquid supply device can continuously supply the cooling liquid to the liquid supply main pipe 10, thereby ensuring the circulation of the cooling liquid. The liquid supply device may be a liquid storage tank 1, which has a simple structure and low cost.

Of course, the inlet of the liquid supply main pipe 10 can also be directly connected to the tap water pipe, and the outlet of the liquid outlet main pipe 15 can be connected to the drainage pipe. In this way, the coolant cannot be recycled, which wastes resources.

The embodiment of the utility model further provides an electrolyte hydrogen production system, which includes a cooling device provided in any of the above embodiments, and the cooling device is used to cool a single power source 16 or a single electrolyzer of the electrolyte hydrogen production system. Compared with the prior art, the beneficial effects of the electrolyte hydrogen production system provided by the embodiment of the utility model are the same as the beneficial effects of the above cooling device, which will not be described in detail here.

In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims (11)

1. A cooling device for an electrolyte hydrogen production system, comprising:

The liquid inlet pipe group comprises a liquid supply main pipe and liquid supply branch pipes, the outlet of each liquid supply main pipe is communicated with the inlet of at least one liquid supply branch pipe, the outlets of all liquid supply branch pipes are communicated with the cooling liquid inlets of the same power supply or electrolysis bath, and the liquid supply main pipes can be independently opened and closed;

The liquid outlet pipe group comprises a liquid outlet main pipe and liquid outlet branch pipes, the inlet of each liquid outlet main pipe is communicated with the outlet of at least one liquid outlet branch pipe, the inlets of all liquid outlet main pipes are communicated with the cooling liquid outlets of the same power supply or electrolytic tank, and the liquid outlet main pipes can be independently opened and closed;

the number of the liquid supply main pipes and the liquid supply branch pipes is multiple, and/or the number of the liquid outlet main pipes and the liquid outlet branch pipes is multiple.

2. The cooling device of the electrolyte hydrogen production system according to claim 1, wherein a stop valve and/or a flowmeter is provided on the liquid supply manifold; and/or the number of the groups of groups,

And a stop valve is arranged on the liquid outlet main pipe.

3. The cooling device of the electrolyte hydrogen production system according to claim 1, wherein a stop valve and/or a regulating valve is provided on the liquid supply branch pipe;

The cooling device also includes a controller in communication with the regulator valve.

4. The cooling apparatus of an electrolyte hydrogen production system of claim 1, wherein the outlet of the liquid supply manifold is in communication with the inlet of one or both liquid supply branches; and/or the number of the groups of groups,

The inlet of the liquid outlet main pipe is communicated with the outlet of one or two liquid outlet branch pipes.

5. The cooling apparatus of an electrolyte hydrogen production system according to any one of claims 1 to 4, further comprising an intermediate communication pipe, an outlet of which communicates with inlets of all liquid supply manifolds;

The heat exchanger is arranged on the middle communicating pipe and can cool the cooling liquid flowing through the middle communicating pipe.

6. The cooling device of the electrolyte hydrogen production system according to claim 5, wherein a first inlet pipe and a second inlet pipe which are connected in parallel are arranged between the inlet of the intermediate communicating pipe and the liquid supply device, a first liquid supplementing pump is arranged on the first inlet pipe, and a second liquid supplementing pump is arranged on the second inlet pipe;

The first fluid infusion pump and the second fluid infusion pump are variable frequency pumps, or the first fluid infusion pump is a variable frequency pump, and the second fluid infusion pump is a fixed frequency pump.

7. The cooling device of the electrolyte hydrogen production system of claim 6, wherein the first inlet pipe and/or the second inlet pipe is further provided with a one-way valve.

8. The cooling device of the electrolyte hydrogen production system according to claim 6, wherein the intermediate communication pipe is provided with a pressure detecting member, a flow detecting member and/or a temperature detecting member;

The temperature sensing element is located downstream of the heat exchanger and/or the pressure sensing element is located upstream of the heat exchanger.

9. The cooling device of the electrolyte hydrogen production system of claim 8, wherein the pressure sensing element is a pressure transmitter, the flow sensing element is a flow transmitter, and the temperature sensing element is a temperature transmitter;

The cooling device further comprises a controller which is in communication connection with the first fluid infusion pump, the second fluid infusion pump, the pressure transmitter, the flow transmitter and/or the temperature transmitter.

10. The cooling device of an electrolyte hydrogen production system of any one of claims 1-4 or 6-9, further comprising a liquid supply device, an outlet of the liquid supply device being in communication with an inlet of a liquid supply manifold, an inlet of the liquid supply device being in communication with an outlet of a liquid outlet manifold;

the liquid supply device is a liquid storage box.

11. An electrolyte hydrogen production system comprising a cooling device as claimed in any one of claims 1 to 10 for cooling a single power supply or a single electrolyzer of the electrolyte hydrogen production system.