Pressure control device and electrolytic bath hydrogen production system

Abstract

The utility model relates to a pressure control device and an electrolytic bath hydrogen production system, and the control device comprises a pressure regulating valve which is used for regulating the pressure value of target gas conveyed from gas production equipment to gas utilization equipment; the first pressure transmitter is used for monitoring a gas pressure value of an output port of the gas making equipment; the gas diffusing assembly comprises a first switch valve, a first diffusing pipeline and a second diffusing pipeline, and the gas diffusing assembly is used for diffusing target gas output by the gas making equipment; the valve control assembly is used for receiving the gas pressure value and further used for controlling the opening degree of the pressure adjusting valve and the opening and closing state of the first switch valve. While the output air pressure of the gas making equipment is consistent with the required air pressure of the gas using equipment, the output overpressure phenomenon can be avoided, and safe operation of the gas making equipment and the gas using equipment is guaranteed.

Description

Technical Field

[0001] The present application belongs to the technical field of hydrogen production, and specifically relates to a pressure control device and an electrolyzer hydrogen production system. Background Art

[0002] Electrolyzer hydrogen production equipment is a device that uses the principle of electrolysis to decompose water into hydrogen and oxygen. It is usually composed of an electrolyzer, a hydrogen (oxygen) gas-liquid separator, a hydrogen (oxygen) gas cooler, a hydrogen (oxygen) gas scrubber and other equipment; water molecules undergo an electrochemical reaction in the electrolyzer to decompose into hydrogen and oxygen, which are then separated into gas and liquid, cooled, washed, and dried before being sent to storage tanks or for user use.

[0003] At present, when the hydrogen output by the electrolyzer hydrogen production equipment is directly provided to the hydrogen-using equipment, the gas supply is controlled by only one switch valve. Usually, there will be a problem of inconsistency between the output gas pressure of the hydrogen production equipment and the required gas pressure of the hydrogen-using equipment, which affects the safe operation of the equipment. Utility Model Content

[0004] The present application provides a pressure control device and an electrolyzer hydrogen production system, which solves the problem of inconsistency between the output gas pressure of a gas production device and the required gas pressure of a gas-using device.

[0005] In a first aspect, the present application provides a pressure control device, which includes: a pressure regulating valve, one end of which is connected to an output port of a gas-making device through a first delivery pipeline, and the other end of which is connected to an input port of a gas-using device through a second delivery pipeline, and is used to adjust the pressure value of a target gas delivered by the gas-making device to the gas-using device; a first pressure transmitter, which is arranged on the first delivery pipeline and is used to monitor the gas pressure value of the output port of the gas-making device; a gas release component, which includes a first switch valve, a first release pipeline and a second release pipeline, one end of the first release pipeline is connected to one end of the second release pipeline through the first switch valve, and the other end of the second release pipeline is connected to the second delivery pipeline, and the gas release component is used to release the target gas output by the gas-making device; a valve control component, which is electrically connected to the first pressure transmitter, the pressure regulating valve and the first switch valve, respectively, and is used to receive the gas pressure value and to control the opening of the pressure regulating valve and the opening and closing state of the first switch valve.

[0006] Optionally, the gas-producing equipment includes a hydrogen-producing equipment, the gas-using equipment includes a hydrogen-using equipment, and the target gas is hydrogen; or, the gas-producing equipment includes an oxygen-producing equipment, the gas-using equipment includes an oxygen-using equipment, and the target gas is oxygen.

[0007] Optionally, the gas production equipment includes an electrolytic reactor, a gas-liquid separator and a gas processor, wherein the gas processor includes at least one of a cooler, a scrubber and a dryer, and the pressure control device also includes: a second pressure transmitter, which is arranged on the gas delivery pipeline between the electrolytic reactor and the gas-liquid separator, and the second pressure transmitter is electrically connected to the valve control component and is used to monitor the gas pressure value at the output port of the electrolytic reactor; a second switch valve, the first end of the second switch valve is connected to the output port of the gas-liquid separator through the gas delivery pipeline, the second end of the second switch valve is connected to the input port of the gas processor through the gas delivery pipeline, the third end of the second switch valve is connected to the first release pipeline through the gas delivery pipeline, and the control end of the second switch valve is electrically connected to the valve control component; the second switch valve is used to control the gas-liquid separator to deliver the target gas to the gas processor or the gas release component.

[0008] Optionally, the pressure control device also includes: a third switch valve, which is arranged on the second delivery pipeline and is located after the connecting point between the second release pipeline and the second delivery pipeline, the third switch valve is electrically connected to the valve control assembly, and the third switch valve is used to control the state of the gas processor delivering the target gas to the gas-using equipment.

[0009] Optionally, the first switch valve is a two-way valve, the second switch valve is a three-way valve, or / and the third switch valve is a two-way valve.

[0010] Optionally, the other end of the first venting pipe is suspended; or, when the gas production equipment includes a storage container, the other end of the first venting pipe is connected to the input port of the storage container.

[0011] Optionally, the pressure regulating valve includes: a regulating valve body, the regulating valve body including a movably arranged valve core; a kinetic energy converter, the kinetic energy converter is electrically connected to the valve control component, and the kinetic energy converter is also drivingly connected to the regulating valve body, for converting the electrical signal output by the valve control component into kinetic energy to drive the valve core in the regulating valve body to move; a displacement sensor, which is arranged on the regulating valve body and electrically connected to the valve control component, for detecting the movement state of the valve core in the regulating valve body.

[0012] Optionally, the valve control component includes: an electronic control module, which is electrically connected to the displacement sensor and the host computer respectively; a power drive module, the input end of the power drive module is connected to the output end of the electronic control module, and the output end of the power drive module is connected to the input end of the kinetic energy converter, for amplifying the control signal output by the electronic control module; and a power supply module, which is electrically connected to the electronic control module and the power drive module respectively, for providing electrical energy.

[0013] Optionally, the power driving module includes: a first switch tube, wherein the control end of the first switch tube is connected to the first output end of the electronic control module, the first end of the first switch tube is connected to the output end of the power supply module, and the second end of the first switch tube is connected to the first input end of the kinetic energy converter; a second switch tube, wherein the control end of the second switch tube is connected to the second output end of the electronic control module, the first end of the second switch tube is connected to the second end of the first switch tube, and the second end of the second switch tube is grounded; a third switch tube, wherein the control end of the third switch tube is connected to the second output end of the electronic control module, the first end of the third switch tube is connected to the output end of the power supply module, and the second end of the third switch tube is connected to the second input end of the kinetic energy converter; and a fourth switch tube, wherein the control end of the fourth switch tube is connected to the first output end of the electronic control module, the first end of the fourth switch tube is connected to the second end of the third switch tube, and the second end of the fourth switch tube is grounded.

[0014] In a second aspect, the present application provides an electrolyzer hydrogen production system, which includes: an electrolysis reactor, used to decompose water molecules into hydrogen; a gas-liquid separator, wherein the input port of the gas-liquid separator is connected to the output port of the electrolysis reactor, and is used to perform gas-liquid separation on the gas-liquid mixture output by the electrolysis reactor; a gas processor, wherein the input port of the gas-liquid separator is connected to the output port of the gas-liquid separator, and is used to cool, wash and / or dry the hydrogen output by the gas-liquid separator; and a pressure control device, wherein the pressure control device is respectively connected to the gas processor and a gas-using device, and is used to control the gas pressure value at the output port of the gas processor.

[0015] The technical solution provided by this application has at least the following beneficial effects:

[0016] The present application monitors the gas pressure value of the output port of the gas-making equipment in real time through the first pressure transmitter, so that the valve control component controls the opening of the pressure regulating valve according to the gas pressure value, so that the output gas pressure of the gas-making equipment is consistent with the demand gas pressure of the gas-using equipment; in addition, the opening and closing of the first switch valve is controlled by the valve control component, so as to realize the release control of the output gas of the gas-making equipment and avoid the overpressure phenomenon; therefore, the present application can avoid the output overpressure phenomenon while ensuring that the output gas pressure of the gas-making equipment is consistent with the demand gas pressure of the gas-using equipment, thereby ensuring the safe operation of the gas-making equipment and the gas-using equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0018] Figure 1 Shown is a structural block diagram of a pressure control device provided in an embodiment of the present application.

[0019] Figure 2 Shown is a schematic diagram of an application scenario of a pressure control device provided in an embodiment of the present application.

[0020] Figure 3 Shown is a structural schematic diagram of a valve control assembly and a pressure regulating valve provided in an embodiment of the present application.

[0021] Figure 4 Shown is a circuit diagram of a power driving module provided in an embodiment of the present application.

[0022] Description of reference numerals:

[0023] 100, pressure control device; 110, pressure regulating valve; 111, regulating valve body; 112, kinetic energy converter; 113, displacement sensor; 120, first pressure transmitter; 130, gas release assembly; 131, first switch valve; 140, valve control assembly; 141, electronic control module; 142, power drive module; 143, power supply module; 150, second pressure transmitter; 160, second switch valve; 170, third switch valve; 200, gas production equipment; 210, electrolytic reactor; 220, gas-liquid separator; 230, gas processor; 300, gas-using equipment; 400, host computer;

[0024] L1, the first delivery pipeline; L2, the second delivery pipeline; L3, the first release pipeline; L4, the second release pipeline; Q1, the first switch tube; Q2, the second switch tube; Q3, the third switch tube; Q4, the fourth switch tube. DETAILED DESCRIPTION

[0025] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0026] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0027] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0028] Figure 1 FIG. 1 is a structural block diagram of a pressure control device provided in an embodiment of the present application; Figure 1 As shown, the pressure control device 100 specifically includes:

[0029] A pressure regulating valve 110, one end of which is connected to the output port of the gas-generating device 200 through a first delivery pipeline L1, and the other end of which is connected to the input port of the gas-consuming device 300 through a second delivery pipeline L2, for adjusting the pressure value of the target gas delivered from the gas-generating device 200 to the gas-consuming device 300;

[0030] The first pressure transmitter 120 is provided on the first delivery pipeline L1 and is used to monitor the gas pressure value at the output port of the gas production equipment 200;

[0031] The gas dispersing component 130 includes a first switch valve 131, a first dispersing pipe L3 and a second dispersing pipe L4. One end of the first dispersing pipe L3 is connected to one end of the second dispersing pipe L4 through the first switch valve 131, and the other end of the second dispersing pipe L4 is connected to the second delivery pipe L2. The gas dispersing component 130 is used to disperse the target gas output by the gas production equipment 200;

[0032] The valve control assembly 140 is electrically connected to the first pressure transmitter 120 , the pressure regulating valve 110 and the first switch valve 131 respectively, and is used to receive the gas pressure value and control the opening of the pressure regulating valve 110 and the opening and closing state of the first switch valve 131 .

[0033] It should be noted that the gas production equipment 200 in this embodiment can be a hydrogen production equipment, an oxygen production equipment, or an integrated hydrogen and oxygen production equipment. The gas-using equipment 300 includes a hydrogen-using equipment or an oxygen-using equipment, and the target gas is hydrogen or oxygen.

[0034] In this embodiment, the current gas pressure value at the output port of the gas production equipment 200 is collected by the first pressure transmitter 120, and the valve control component 140 dynamically adjusts the switch of the pressure regulating valve 110 according to the comparison result of the current gas pressure value and the demand pressure value of the gas-consuming equipment 300, so that the gas pressure output by the gas production equipment 200 meets the demand of the back-end gas-consuming equipment 300. The specific adjustment method is: if the difference between the current gas pressure value and the demand pressure value is within a preset range, the valve control component 140 controls the current opening of the pressure regulating valve 110 to remain unchanged; if the difference between the current gas pressure value and the demand pressure value exceeds the preset range, and the current gas pressure value is greater than the demand pressure value, the valve control component 140 reduces the opening of the pressure regulating valve 110; if the difference between the current gas pressure value and the demand pressure value exceeds the preset range, and the current gas pressure value is less than the demand pressure value, the valve control component 140 increases the opening of the pressure regulating valve 110.

[0035] In this embodiment, the gas output by the gas-making equipment 200 is released by the gas release component 130, so that the pressure value of the gas output by the gas-making equipment 200 can be quickly reduced to prevent the high-pressure gas from causing damage to the gas-using equipment 300; optionally, when the pressure value of the gas output by the gas-making equipment 200 is too large, and adjusting the pressure regulating valve 110 to the minimum opening cannot meet the required pressure value of the gas-using equipment 300, the pressure requirement of the gas-using equipment 300 can be met by releasing the gas through the gas release component 130; optionally, when the gas-using equipment 300 fails and the gas output by the gas-making equipment 200 cannot be used normally, the gas can also be released in time through the gas release component 130 to ensure the safe operation of the gas-making equipment 200.

[0036] It can be seen that the present embodiment includes two pressure control branches, the first control branch is composed of the first pressure transmitter 120, the pressure regulating valve 110 and the valve control assembly 140, and the second control branch is composed of the first pressure transmitter 120, the valve control assembly 140 and the gas release assembly 130; wherein, the second control branch supplements the first control branch, and while making the output gas pressure of the gas-making equipment 200 consistent with the required gas pressure of the gas-using equipment 300, it also makes the output gas pressure of the gas-making equipment 200 not overpressure, thereby ensuring the safe operation of the gas-making equipment 200 and the gas-using equipment 300. In addition, the invention of the present application lies in the various functions, setting positions and mutual connection relationships of the first pressure transmitter 120, the pressure regulating valve 110, the gas release assembly 130 and the valve control assembly 140, and does not involve the improvement of the method of how the valve control assembly 140 controls the opening of the pressure regulating valve 110.

[0037] Therefore, the present application monitors the gas pressure value at the output port of the gas-making equipment 200 in real time through the first pressure transmitter 120, so that the valve control component 140 controls the opening of the pressure regulating valve 110 according to the gas pressure value, so that the output gas pressure of the gas-making equipment 200 is consistent with the required gas pressure of the gas-using equipment 300; in addition, the opening and closing of the first switch valve 131 is controlled by the valve control component 140, so as to realize the release control of the output gas of the gas-making equipment 200 and avoid the overpressure phenomenon; therefore, the present application can avoid the output overpressure phenomenon while satisfying the requirement that the output gas pressure of the gas-making equipment 200 is consistent with the required gas pressure of the gas-using equipment 300, thereby ensuring the safe operation of the gas-making equipment 200 and the gas-using equipment 300.

[0038] In one embodiment, if Figure 1 As shown, one end of the first release pipe L3 is connected to the first switch valve 131, and the other end of the first release pipe L3 is suspended; when the first switch valve 131 is opened, the gas output by the gas production equipment 200 is released to the air through the second release pipe L4 and the first release pipe L3 in turn.

[0039] In one embodiment, when the gas production equipment 200 includes a storage container, one end of the first release pipe L3 is connected to the first switch valve 131, and the other end of the first release pipe L3 is connected to the input port of the storage container (not shown in the figure); when the first switch valve 131 is opened, the gas output by the gas production equipment 200 is released to the storage container through the second release pipe L4 and the first release pipe L3 in turn, so that the storage container can recycle the collected release gas.

[0040] Figure 2 FIG. 1 is a schematic diagram of an application scenario of a pressure control device provided in an embodiment of the present application; Figure 2As shown, the gas production equipment 200 includes an electrolytic reactor 210, a gas-liquid separator 220 and a gas processor 230, wherein the gas processor 230 includes at least one of a cooler, a scrubber and a dryer, and the gas-liquid separator 220 in this embodiment includes a first gas-liquid separator, a cooler and a second gas-liquid separator.

[0041] In this embodiment, the pressure control device 100 also includes: a second pressure transmitter 150, which is arranged on the gas delivery pipeline between the electrolytic reactor 210 and the gas-liquid separator 220. The second pressure transmitter 150 is electrically connected to the valve control component 140 and is used to monitor the gas pressure value at the output port of the electrolytic reactor 210.

[0042] In this embodiment, the pressure control device 100 also includes: a second switch valve 160, the first end of the second switch valve 160 is connected to the output port of the gas-liquid separator 220 through a gas delivery pipeline, the second end of the second switch valve 160 is connected to the input port of the gas processor 230 through a gas delivery pipeline, the third end of the second switch valve 160 is connected to the first release pipeline L3 through a gas delivery pipeline, and the control end of the second switch valve 160 is electrically connected to the valve control component 140; the second switch valve 160 is used to control the gas-liquid separator 220 to deliver the target gas to the gas processor 230 or the gas release component 130.

[0043] It should be noted that the electrolytic reactor 210 in the present embodiment is also an electrolytic cell. Due to problems such as membrane materials and sealing, the electrolytic cell can usually only withstand a pressure of less than or equal to 1.6 MPa. A pressure exceeding the limit value may cause leakage in the electrolytic cell, resulting in a mixture of hydrogen and oxygen and the risk of combustion and explosion. In addition, during the process of filtering the water vapor mixture by the gas-liquid separator 220, the pressure of the gas flow flowing out of the gas outlet of the gas-liquid separator 220 may sometimes be too high. If not handled in time, there may be a major safety hazard, which may cause the safety of the gas production equipment 200 to deteriorate. Therefore, in order to solve the above problems, the present embodiment provides a second pressure transmitter 150 on the gas delivery pipeline between the electrolytic reactor 210 and the gas-liquid separator 220, so that the second pressure transmitter 150 monitors the gas pressure value at the output port of the electrolytic reactor 210. When When it is monitored that the gas pressure value at the output port of the electrolysis reactor 210 does not exceed the preset threshold value, the second switch valve 160 is controlled to be in a first connected state through the valve control component 140, that is, the first end of the second switch valve 160 is connected to the second end, so that the gas-liquid separator 220 outputs gas to the gas processor 230; when it is monitored that the gas pressure value at the output port of the electrolysis reactor 210 exceeds the preset threshold value, the second switch valve 160 is controlled to be in a second connected state through the valve control component 140, that is, the first end of the second switch valve 160 is connected to the third end, so that the gas-liquid separator 220 outputs gas to the gas release component 130, thereby releasing the gas output by the gas-liquid separator 220, which can effectively reduce the gas pressure in the gas-liquid separator 220 and the electrolysis reactor 210, and ensure the safe operation of the gas production equipment 200.

[0044] In one embodiment, the pressure control device 100 also includes: a third switch valve 170, which is arranged on the second delivery pipeline L2 and is located after the connection point between the second release pipeline L4 and the second delivery pipeline L2. The third switch valve 170 is electrically connected to the valve control component 140. The third switch valve 170 is used to control the state of the gas processor 230 delivering the target gas to the gas-using equipment 300.

[0045] like Figure 2 As shown, the third switch valve 170 is arranged between the pressure regulating valve 110 and the gas-consuming equipment 300 to realize the switching state control of the gas processor 230 to supply gas to the gas-consuming equipment 300; when it is necessary to supply gas to the gas-consuming equipment 300, the third switch valve 170 is opened through the valve control component 140, and when it is not necessary to supply gas to the gas-consuming equipment 300, the third switch valve 170 is closed through the valve control component 140.

[0046] In this embodiment, the first switch valve 131 is a two-way valve, the second switch valve 160 is a three-way valve, and the third switch valve 170 is a two-way valve; wherein the two-way valve has only two states, open and closed, the three-way valve has three states, a first open state, a second open state, and a closed state, and the pressure regulating valve 110 includes a closed state and an open state with different opening degrees.

[0047] It should be noted that when the gas production equipment 200 is operating normally, the second switch valve 160 is in the first open state, the gas processor 230 normally receives the gas output by the gas-liquid separator 220, the first switch valve 131 is in the closed state, and the third switch valve 170 is in the open state. The valve control component 140 dynamically adjusts the opening of the pressure regulating valve 110 according to the gas pressure value output by the first pressure transmitter 120, so that the gas pressure output by the gas production equipment 200 can meet the gas pressure required by the gas-consuming equipment 300 while maintaining in a stable range.

[0048] When the gas pressure output by the gas-making equipment 200 exceeds the pressure and cannot meet the demand of the gas-consuming equipment 300 through the pressure regulating valve 110, the first switch valve 131 is opened to release the gas output by the gas-making equipment 200 to reduce the pressure, so that the required gas can be provided to the gas-consuming equipment 300 normally while being released.

[0049] When overpressure occurs during the gas production process, the second switch valve 160 is controlled to be in the second open state to achieve rapid release of the gas output by the gas-liquid separator 220, which can effectively reduce the gas pressure in the gas-liquid separator 220 and the electrolytic reactor 210 and effectively protect the equipment from damage.

[0050] The pressure control device 100 provided in this embodiment is applicable to different electrolyzer hydrogen production equipment. The staff only needs to adjust the target values ​​corresponding to different pressure transmitters, and can ensure that the pressure is not over-pressured while achieving constant pressure output at the outlet. The electrolyzer, as the core component of the entire equipment, ensures the safety of the electrolyzer through an automated redundant design scheme. The entire process is fully digitally displayed, and can be monitored, remotely monitored, or fully automatically unattended, which is of great significance to promoting the development of electrolyzer hydrogen production.

[0051] Figure 3 FIG. 1 is a schematic diagram of the structure of a valve control assembly and a pressure regulating valve provided in an embodiment of the present application; Figure 3As shown, the pressure regulating valve 110 includes: a regulating valve body 111, a kinetic energy converter 112 and a displacement sensor 113, the regulating valve body 111 includes a movably arranged valve core; the kinetic energy converter 112 is electrically connected to the valve control component 140, and the kinetic energy converter 112 is also drivingly connected to the regulating valve body 111, for converting the electrical signal output by the valve control component 140 into kinetic energy, driving the valve core in the regulating valve body 111 to move; the displacement sensor 113 is arranged on the regulating valve body 111, and is electrically connected to the valve control component 140, for detecting the moving state of the valve core in the regulating valve body 111.

[0052] It should be noted that the kinetic energy converter 112 in this embodiment can be a moving coil electromagnetic linear actuator, which serves as a driving device for driving the valve core to move; the kinetic energy converter 112 includes an electromagnetic coil, which is fixedly connected to the valve core. The displacement control of the valve core in the regulating valve body 111 can be achieved by controlling the magnitude and direction of the current in the electromagnetic coil, thereby achieving the opening control of the pressure regulating valve 110. In addition, in order to accurately control the movement of the valve core, the displacement feedback signal of the valve core is accurately obtained through the displacement sensor 113. The displacement sensor 113 in this embodiment includes but is not limited to a laser displacement sensor 113, a magnetic resistance displacement sensor 113, a potentiometer displacement sensor 113, and an inductive displacement sensor 113.

[0053] In this embodiment, the valve control component 140 includes: an electronic control module 141, a power drive module 142 and a power supply module 143. The electronic control module 141 is electrically connected to the displacement sensor 113 and the host computer 400 respectively; the input end of the power drive module 142 is connected to the output end of the electronic control module 141, and the output end of the power drive module 142 is connected to the input end of the kinetic energy converter 112, which is used to amplify the control signal output by the electronic control module 141; the power supply module 143 is electrically connected to the electronic control module 141 and the power drive module 142 respectively, which is used to provide electrical energy.

[0054] It should be noted that the electronic control module 141 in this embodiment can be a PLC controller, a single-chip microcomputer controller or a logic control circuit. The interaction between the electronic control module 141 and the host computer 400 includes: the host computer 400 sends a preset threshold value corresponding to the first pressure transmitter 120 and the second pressure transmitter 150, and the electronic control module 141 sends the gas pressure value detected in real time by the first pressure transmitter 120 and the second pressure transmitter 150, the opening of the pressure regulating valve 110, and the opening and closing states of the first switch valve 131, the second switch valve 160 and the third switch valve 170; the function of the power drive module 142 in this embodiment is to convert a weaker control signal into a large current, so that the kinetic energy converter 112 drives the valve core to move according to the large current signal.

[0055] Figure 4 FIG. 1 is a circuit diagram of a power driving module provided in an embodiment of the present application; Figure 4 As shown, the power driving module 142 includes: a first switch tube Q1, a second switch tube Q2, a third switch tube Q3 and a fourth switch tube Q4; the control end of the first switch tube Q1 is connected to the first output end of the electronic control module 141, the first end of the first switch tube Q1 is connected to the output end of the power supply module 143, and the second end of the first switch tube Q1 is connected to the first input end of the kinetic energy converter 112; the control end of the second switch tube Q2 is connected to the second output end of the electronic control module 141, the first end of the second switch tube Q2 is connected to the second end of the first switch tube Q1, and the second end of the second switch tube Q2 is grounded; the control end of the third switch tube Q3 is connected to the second output end of the electronic control module 141, the first end of the third switch tube Q3 is connected to the output end of the power supply module 143, and the second end of the third switch tube Q3 is connected to the second input end of the kinetic energy converter 112; the control end of the fourth switch tube Q4 is connected to the first output end of the electronic control module 141, the first end of the fourth switch tube Q4 is connected to the second end of the third switch tube Q3, and the second end of the fourth switch tube Q4 is grounded.

[0056] It should be noted that the four switch tubes in this embodiment are power field effect tubes, and the power driving module 142 also includes four freewheeling diodes, which are respectively arranged corresponding to each switch tube; the four switch tubes are divided into two groups, the first switch tube Q1 and the fourth switch tube Q4 are one group, and the second switch tube Q2 and the fourth switch tube Q4 are one group, adopting a bipolar driving method, and are respectively controlled by the complementary first control signal Vin1 and the second control signal Vin2. When the first control signal Vin1 is at a high level and the second control signal Vin2 is at a low level, the first switch tube Q1 and the fourth switch tube Q4 are turned on, the second switch tube Q2 and the third switch tube Q3 are turned off, and the electromagnetic coil of the kinetic energy converter 112 receives a positive voltage from A to B, so that the kinetic energy converter 112 drives the valve core to move forward, increasing the opening of the pressure regulating valve 110; conversely, when the first control signal Vin1 is at a low level and the second control signal Vin2 is at a high level, the first switch tube Q1 and the fourth switch tube Q4 are turned off, the second switch tube Q2 and the third switch tube Q3 are turned on, and the electromagnetic coil of the kinetic energy converter 112 receives a reverse voltage from B to A, so that the kinetic energy converter 112 drives the valve core to move in the reverse direction, reducing the opening of the pressure regulating valve 110.

[0057] In one embodiment, an electrolyzer hydrogen production system is provided, such as Figure 1As shown, the hydrogen production system includes: an electrolytic reactor 210, a gas-liquid separator 220, a gas processor 230 and the pressure control device 100 of the above embodiment; wherein the electrolytic reactor 210 is used to decompose water molecules into hydrogen; the input port of the gas-liquid separator 220 is connected with the output port of the electrolytic reactor 210, and is used to perform gas-liquid separation on the gas-liquid mixture output by the electrolytic reactor 210; the input port of the gas-liquid separator 220 is connected with the output port of the gas-liquid separator 220, and is used to cool, wash and / or dry the hydrogen output by the gas-liquid separator 220; the pressure control device 100 is respectively connected with the gas processor 230 and the gas-using equipment 300, and is used to control the gas pressure value at the output port of the gas processor 230.

[0058] In addition, the terms "first", "second", "third", etc. 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. Thus, a feature defined as "first", "second", "third" may explicitly or implicitly include one or more of the feature. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0059] In the description of this specification, the description with reference to the terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0060] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. A pressure control device, characterized in that: The pressure control device comprises: A pressure regulating valve, one end of which is connected to the output port of the gas-generating device through a first delivery pipeline, and the other end of which is connected to the input port of the gas-consuming device through a second delivery pipeline, for adjusting the pressure value of the target gas delivered by the gas-generating device to the gas-consuming device; A first pressure transmitter, arranged on the first delivery pipeline, for monitoring the gas pressure value at the output port of the gas production equipment; A gas dispersing assembly, the gas dispersing assembly comprising a first switch valve, a first dispersing pipe and a second dispersing pipe, one end of the first dispersing pipe is connected to one end of the second dispersing pipe through the first switch valve, the other end of the second dispersing pipe is connected to the second delivery pipe, and the gas dispersing assembly is used to disperse the target gas output by the gas production equipment; The valve control component is electrically connected to the first pressure transmitter, the pressure regulating valve and the first switch valve respectively, and is used to receive the gas pressure value and control the opening of the pressure regulating valve and the opening and closing state of the first switch valve.

2. The pressure control device according to claim 1, characterized in that: The gas production equipment includes a hydrogen production equipment, the gas use equipment includes a hydrogen use equipment, and the target gas is hydrogen; Alternatively, the gas-producing equipment includes oxygen-producing equipment, the gas-using equipment includes oxygen-using equipment, and the target gas is oxygen.

3. The pressure control device according to claim 2, characterized in that: The gas production equipment includes an electrolytic reactor, a gas-liquid separator and a gas processor, wherein the gas processor includes at least one of a cooler, a scrubber and a dryer, and the pressure control device further includes: A second pressure transmitter is arranged on the gas delivery pipeline between the electrolytic reactor and the gas-liquid separator, the second pressure transmitter is electrically connected to the valve control component, and is used to monitor the gas pressure value at the output port of the electrolytic reactor; A second switch valve, wherein the first end of the second switch valve is connected to the output port of the gas-liquid separator through a gas delivery pipeline, the second end of the second switch valve is connected to the input port of the gas processor through a gas delivery pipeline, the third end of the second switch valve is connected to the first release pipeline through a gas delivery pipeline, and the control end of the second switch valve is electrically connected to the valve control component; the second switch valve is used to control the gas-liquid separator to deliver the target gas to the gas processor or the gas release component.

4. The pressure control device according to claim 3, characterized in that: The pressure control device also includes: The third switch valve is arranged on the second delivery pipeline and is located after the connection point between the second release pipeline and the second delivery pipeline. The third switch valve is electrically connected to the valve control component. The third switch valve is used to control the state of the gas processor delivering the target gas to the gas-using equipment.

5. The pressure control device according to claim 4, characterized in that: The first switch valve is a two-way valve, the second switch valve is a three-way valve, and / or the third switch valve is a two-way valve.

6. The pressure control device according to any one of claims 1 to 5, characterized in that: The other end of the first release pipe is suspended in the air; Alternatively, when the gas production equipment includes a storage container, the other end of the first diffusion pipeline is communicated with an input port of the storage container.

7. The pressure control device according to any one of claims 1 to 5, characterized in that: The pressure regulating valve comprises: A regulating valve body, the regulating valve body comprising a movably arranged valve core; A kinetic energy converter, the kinetic energy converter is electrically connected to the valve control assembly, and the kinetic energy converter is also drivingly connected to the regulating valve body, and is used to convert the electrical signal output by the valve control assembly into kinetic energy to drive the valve core in the regulating valve body to move; The displacement sensor is arranged on the regulating valve body and is electrically connected to the valve control assembly, and is used to detect the movement state of the valve core in the regulating valve body.

8. The pressure control device according to claim 7, characterized in that: The valve control assembly comprises: An electronic control module, the electronic control module is electrically connected to the displacement sensor and the host computer respectively; A power driving module, the input end of the power driving module is connected to the output end of the electronic control module, the output end of the power driving module is connected to the input end of the kinetic energy converter, and is used to amplify the control signal output by the electronic control module; A power supply module is electrically connected to the electronic control module and the power drive module respectively, and is used for providing electrical energy.

9. The pressure control device according to claim 8, characterized in that: The power driving module comprises: a first switch tube, wherein a control end of the first switch tube is connected to a first output end of the electronic control module, a first end of the first switch tube is connected to an output end of the power supply module, and a second end of the first switch tube is connected to a first input end of the kinetic energy converter; A second switch tube, wherein a control end of the second switch tube is connected to a second output end of the electronic control module, a first end of the second switch tube is connected to a second end of the first switch tube, and a second end of the second switch tube is grounded; a third switch tube, wherein the control end of the third switch tube is connected to the second output end of the electronic control module, the first end of the third switch tube is connected to the output end of the power supply module, and the second end of the third switch tube is connected to the second input end of the kinetic energy converter; A fourth switch tube, wherein a control end of the fourth switch tube is connected to the first output end of the electronic control module, a first end of the fourth switch tube is connected to the second end of the third switch tube, and a second end of the fourth switch tube is grounded.

10. An electrolyzer hydrogen production system, characterized in that: The hydrogen production system comprises: An electrolytic reactor, which is used to split water molecules into hydrogen; A gas-liquid separator, the input port of the gas-liquid separator is connected to the output port of the electrolytic reactor, and is used for performing gas-liquid separation on the gas-liquid mixture outputted from the electrolytic reactor; A gas processor, the input port of the gas-liquid separator is connected to the output port of the gas-liquid separator, and is used to cool, wash and / or dry the hydrogen output from the gas-liquid separator; The pressure control device according to any one of claims 1 to 9 is connected to the gas processor and the gas-using equipment respectively, and is used to control the gas pressure value at the output port of the gas processor.

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