Redundancy control hydrogenation device

Abstract

The utility model discloses a redundancy control hydrogenation device which comprises a hydrogenation pipeline and a control system, an air inlet connector of the hydrogenation pipeline is used for being connected with an air source, and an air inflation connector of the hydrogenation pipeline is used for being connected with inflated equipment. A first automatic cut-off valve, a pressure regulating valve and a second automatic cut-off valve are sequentially arranged on the hydrogenation pipeline in the direction from the gas inlet interface to the gas charging interface; the first automatic cut-off valve and the second automatic cut-off valve are respectively connected with a control signal output end of the control system; the hydrogenation device further comprises a first manual valve, a manual pressure regulating valve and a second manual valve, the gas inlet end and the gas outlet end of the first manual valve are connected with the gas inlet end and the gas outlet end of the first automatic stop valve respectively, and the gas inlet end and the gas outlet end of the manual pressure regulating valve are connected with the gas inlet end and the gas outlet end of the pressure regulating valve respectively. The air inlet end and the air outlet end of the second manual valve are connected with the air inlet end and the air outlet end of the second automatic stop valve respectively. The hydrogenation operation can still be completed when the automatic valve on the hydrogenation pipeline breaks down.

Description

Technical Field

[0001] This application relates to the field of hydrogen refueling equipment technology, and in particular to a hydrogen refueling device with redundant control. Background Technology

[0002] Currently, hydrogen is commonly used in laboratories, factories, and other places. In these places, the required hydrogen is usually stored in hydrogen storage facilities such as gas cylinders. When the hydrogen in the storage facilities is insufficient, hydrogen needs to be added in a timely manner through a hydrogen refueling device, that is, the hydrogen from the gas source (such as a hydrogen refueling station) is filled into the gas cylinder through the hydrogen refueling device.

[0003] However, most existing hydrogen refueling devices only have automatic valves. During hydrogen refueling, the control system in the hydrogen refueling device is activated, and the control system controls the opening and closing of each automatic valve on the hydrogen refueling pipeline to achieve automatic hydrogen refueling. When one or more of the automatic valves malfunction, the hydrogen refueling operation cannot be completed. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a redundant control hydrogenation device. By redundantly configuring a first manual valve, a manual pressure regulating valve, and a second manual valve with the first automatic shut-off valve, the pressure regulating valve, and the second automatic shut-off valve on the hydrogenation pipeline, redundant control is achieved. Even if the automatic valve on the hydrogenation pipeline malfunctions, the hydrogenation operation can still be completed by manually opening the corresponding redundant valve.

[0005] The technical solution of this application is as follows:

[0006] A redundant control hydrogen refueling device includes a hydrogen refueling pipeline and a control system. The two ends of the hydrogen refueling pipeline are an inlet port and a filling port, respectively. The inlet port is used to connect to a gas source, and the filling port is used to connect to a device being refueled.

[0007] A first automatic shut-off valve, a pressure regulating valve, and a second automatic shut-off valve are sequentially provided on the hydrogenation pipeline from the gas inlet to the gas filling port. The first automatic shut-off valve and the second automatic shut-off valve are respectively connected to the control signal output terminal of the control system.

[0008] The hydrogenation unit further includes a first manual valve, a manual pressure regulating valve, and a second manual valve. The inlet of the first manual valve is connected to the inlet of the first automatic shut-off valve via a pipeline, and the outlet of the first manual valve is also connected to the outlet of the first automatic shut-off valve via a pipeline. The inlet of the manual pressure regulating valve is connected to the inlet of the pressure regulating valve via a pipeline, and the outlet of the manual pressure regulating valve is also connected to the outlet of the pressure regulating valve via a pipeline. The inlet of the second manual valve is connected to the inlet of the second automatic shut-off valve via a pipeline, and the outlet of the second manual valve is also connected to the outlet of the second automatic shut-off valve via a pipeline.

[0009] The manual pressure regulating valve is used to regulate the pressure difference between its inlet and outlet ends. The first manual valve, the manual pressure regulating valve, and the second manual valve are all normally closed valves.

[0010] Preferably, the manual pressure regulating valve is a needle valve or a shut-off valve.

[0011] Preferably, the redundant control hydrogenation device further includes a first pressure detection module and a second pressure detection module, wherein the first pressure detection module and the second pressure detection module are respectively connected to the signal input terminal of the control system.

[0012] The first pressure detection module is installed at the outlet of the first automatic shut-off valve and is used to detect the pressure signal at the outlet of the first automatic shut-off valve.

[0013] The second pressure detection module is installed at the outlet of the pressure regulating valve and is used to detect the pressure signal at the outlet of the pressure regulating valve.

[0014] Preferably, the redundant control hydrogenation unit further includes a centralized venting pipeline, with an inlet port and a centralized venting port at its two ends. The inlet port of the centralized venting pipeline is connected to the inlet end of the second automatic shut-off valve, and the centralized venting port is used to connect to a preset unified discharge point via a pipeline.

[0015] The centralized venting pipeline is equipped with a third automatic shut-off valve, which is connected to the control signal output terminal of the control system.

[0016] Preferably, the redundant control hydrogenation device further includes a third manual valve, the inlet of which is connected to the inlet of the third automatic shut-off valve via a pipeline, and the outlet of which is connected to the outlet of the third automatic shut-off valve via a pipeline. The third manual valve is a normally closed valve.

[0017] Preferably, the redundant control hydrogenation device further includes a vacuum pumping line, with an inlet port and a pump connection port at its two ends. The inlet port of the vacuum pumping line is connected to the inlet of the first automatic shut-off valve, and the pump connection port of the vacuum pumping line is connected to a vacuum pump.

[0018] The vacuum pipeline is equipped with a fourth automatic shut-off valve and a fourth manual valve sequentially from its air inlet port to the pump connection port.

[0019] The fourth automatic shut-off valve and the vacuum pump are respectively connected to the control signal output terminal of the control system.

[0020] Preferably, the fourth manual valve is a normally open valve.

[0021] Preferably, the redundant control hydrogenation unit further includes a third pressure detection module, which is connected to the signal input terminal of the control system.

[0022] The third pressure detection module is installed on the vacuum pipeline and located at the outlet of the fourth manual valve. It is used to detect the pressure signal at the outlet of the fourth manual valve.

[0023] Preferably, the control system includes a controller and a human-machine interface panel, the controller is communicatively connected to the human-machine interface panel, and the signal input terminals of the first automatic shut-off valve and the second automatic shut-off valve are respectively connected to the control signal output terminal of the controller.

[0024] Preferably, the redundant control hydrogen refueling device further includes a combustible gas detector and a flame detector, which are respectively connected to the signal input terminal of the controller.

[0025] The advantages of the redundant control hydrogenation unit in this application are as follows:

[0026] The redundant control hydrogenation device of this application redundantly sets up a first manual valve, a manual pressure regulating valve, and a second manual valve with the first automatic shut-off valve, the pressure regulating valve, and the second automatic shut-off valve on the hydrogenation pipeline. When any one or more of the first automatic shut-off valve, the pressure regulating valve, and the second automatic shut-off valve fail, causing the hydrogenation pipeline to be blocked, the corresponding valve in the first manual valve, the manual pressure regulating valve, and the second manual valve can be manually opened to replace the faulty valve, thereby achieving redundant control to ensure the smooth operation of hydrogenation. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of a redundant control hydrogenation device according to an embodiment of this application. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In the embodiments provided in this application, it should be understood that the disclosed methods and systems can be implemented in other ways. The system embodiments described below are merely illustrative. For example, the division of units and modules is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or modules can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, and can be electrical, mechanical, or other forms.

[0031] In addition, each functional unit in the various embodiments of this application can be integrated into a single processor, or each unit can be a separate device, or two or more units can be integrated into a single device; each functional unit in the various embodiments of this application can be implemented in hardware or in the form of hardware plus software functional units.

[0032] Those skilled in the art will understand that all or part of the steps of the following method embodiments can be implemented by program instructions and related hardware. The aforementioned program instructions can be stored in a computer-readable storage medium. When the program instructions are executed, they perform the steps of the following method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, read-only memory (ROM), magnetic disks, or optical disks.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0034] This application provides a hydrogenation apparatus with redundant control, such as... Figure 1As shown, the hydrogen refueling device may include a hydrogen refueling pipeline 1 and a control system 2. The two ends of the hydrogen refueling pipeline 1 are an inlet port 1a and a filling port 1b, respectively. The inlet port 1a is used to connect to a gas source, and the filling port 1b is used to connect to the device being refueled.

[0035] A first automatic shut-off valve 3, a pressure regulating valve 4, and a second automatic shut-off valve 5 are sequentially provided on the hydrogenation pipeline 1 from the gas inlet 1a to the gas filling port 1b. The first automatic shut-off valve 3 and the second automatic shut-off valve 5 are respectively connected to the control signal output terminal of the control system 2.

[0036] The hydrogenation unit also includes a first manual valve 6, a manual pressure regulating valve 7, and a second manual valve 8. The inlet of the first manual valve 6 is connected to the inlet of the first automatic shut-off valve 3 via a pipeline, and the outlet of the first manual valve 6 is connected to the outlet of the first automatic shut-off valve 3 via a pipeline. The inlet of the manual pressure regulating valve 7 is connected to the inlet of the pressure regulating valve 4 via a pipeline, and the outlet of the manual pressure regulating valve 7 is connected to the outlet of the pressure regulating valve 4 via a pipeline. The inlet of the second manual valve 8 is connected to the inlet of the second automatic shut-off valve 5 via a pipeline, and the outlet of the second manual valve 8 is connected to the outlet of the second automatic shut-off valve 5 via a pipeline.

[0037] The manual pressure regulating valve 7 is used to regulate the pressure difference between its inlet and outlet ends. The first manual valve 6, the manual pressure regulating valve 7, and the second manual valve 8 are all normally closed valves.

[0038] The working principle of the redundant control hydrogenation device in this embodiment is as follows:

[0039] When hydrogen needs to be added, the gas inlet 1a of the hydrogen addition pipeline 1 is connected to the gas source, and the gas filling port 1b of the hydrogen addition pipeline 1 is connected to the equipment to be filled. Then, the first automatic shut-off valve 3 and the second automatic shut-off valve 5 are opened by the control system 2. The hydrogen in the gas source enters the equipment to be filled through the first automatic shut-off valve 3, the pressure regulating valve 4 and the second automatic shut-off valve 5 of the hydrogen addition pipeline 1 in sequence, thereby realizing the addition of hydrogen to the equipment to be filled. The pressure regulating valve 4 adjusts the filling pressure to the pressure required by the equipment to be filled.

[0040] When any one or more of the first automatic shut-off valve 3, pressure regulating valve 4, and second automatic shut-off valve 5 malfunction, causing the hydrogen refueling pipeline 1 to be blocked, the malfunctioning valve can be replaced by manually opening the corresponding valve among the first manual valve 6, manual pressure regulating valve 7, and second manual valve 8. For example, when the first automatic shut-off valve 3 malfunctions (either due to a valve malfunction itself or an abnormal power supply from the control system 2 to the first automatic shut-off valve 3), the first manual valve 6, which is redundantly configured with the first automatic shut-off valve 3, is manually opened, allowing hydrogen from the gas source to enter the refueling equipment sequentially through the first manual valve 6, pressure regulating valve 4, and second automatic shut-off valve 5. Similarly, when both pressure regulating valve 4 and second automatic shut-off valve 5 malfunction simultaneously, the manual pressure regulating valve 7 and second manual valve 8 are manually opened, allowing hydrogen from the gas source to enter the refueling equipment sequentially through the first automatic shut-off valve 3, manual pressure regulating valve 7, and second manual valve 8. This ensures that the hydrogen refueling operation will not be interrupted due to automatic valve malfunctions.

[0041] It should be noted that when other single or multiple valves in the first automatic shut-off valve 3, pressure regulating valve 4, and second automatic shut-off valve 5 fail, the switching method is similar and will not be described in detail here.

[0042] Specifically, in this embodiment, both the first manual valve 6 and the second manual valve 8 are manual ball valves.

[0043] The redundant control hydrogenation device of this application embodiment redundantly sets a first manual valve 6, a manual pressure regulating valve 7, and a second manual valve 8 with the first automatic shut-off valve 3, the pressure regulating valve 4, and the second automatic shut-off valve 5 on the hydrogenation pipeline 1. When any one or more of the first automatic shut-off valve 3, the pressure regulating valve 4, and the second automatic shut-off valve 5 fail, causing the hydrogenation pipeline 1 to be blocked, the corresponding valves of the first manual valve 6, the manual pressure regulating valve 7, and the second manual valve 8 can be manually opened to replace the faulty valve, thereby achieving redundant control to ensure the smooth operation of hydrogenation.

[0044] In one embodiment, the control system 2 includes a controller 201 and a human-machine interface panel 202. The controller 201 is communicatively connected to the human-machine interface panel 202, and the signal input terminals of the first automatic shut-off valve 3 and the second automatic shut-off valve 5 are respectively connected to the control signal output terminal of the controller 201.

[0045] Specifically, the human-machine interface panel 202 allows users to perform human-machine interaction operations, such as inputting hydrogen refueling start commands and hydrogen refueling stop commands; the controller 201 is used to control the opening and closing of each automatic valve according to the control commands input into the human-machine interface panel 202, so that the hydrogen refueling device performs the corresponding functions. For example, when the user inputs a hydrogen refueling start command through the human-machine interface panel 202, the controller 201 controls the first automatic shut-off valve 3 and the second automatic shut-off valve 5 to open according to the command, and starts hydrogen refueling the charging equipment.

[0046] In this embodiment, the human-machine interface panel 202 may include function buttons and / or a display screen. The display screen is used to display information such as the operating status of the hydrogenation device (e.g., the on / off status of the first automatic shut-off valve 3 and the second automatic shut-off valve 5). Preferably, the display screen can be a touch screen to better meet the needs of human-machine interaction. Users can input corresponding control commands through the function buttons or the touch screen.

[0047] Specifically, in this embodiment, the controller 201 can be a PLC module or an MCU microcontroller chip.

[0048] In one embodiment, the manual pressure regulating valve 7 is a needle valve or a shut-off valve. The pressure difference between its inlet and outlet ends is adjusted using a needle valve or shut-off valve, which is simple to operate and has a wide adjustable range. Specifically, in this embodiment, the manual pressure regulating valve 7 is a needle valve, which provides higher adjustment precision.

[0049] In one embodiment, the redundantly controlled hydrogenation unit further includes a first pressure detection module 9 and a second pressure detection module 10, wherein the first pressure detection module 9 and the second pressure detection module 10 are respectively connected to the signal input terminal of the control system 2.

[0050] The first pressure detection module 9 is installed at the outlet end of the first automatic shut-off valve 3, and it is used to detect the pressure signal at the outlet end of the first automatic shut-off valve 3.

[0051] The second pressure detection module 10 is installed at the outlet of the pressure regulating valve 4, and it is used to detect the pressure signal at the outlet of the pressure regulating valve 4.

[0052] In this embodiment, a first pressure detection module 9 is used to detect the pressure signal at the outlet of the first automatic shut-off valve 3, and a second pressure detection module 10 is used to detect the pressure signal at the outlet of the pressure regulating valve 4. On the one hand, the pressure signals at the outlets of the first automatic shut-off valve 3 and the pressure regulating valve 4 can be used to determine whether the first automatic switching valve and the pressure regulating valve 4 are faulty. For example, during hydrogen refueling, if the pressure signal at the outlet of the first automatic shut-off valve 3 detected by the first pressure detection module 9 is zero, it indicates that the first automatic shut-off valve 3 is faulty and has not opened (provided that the gas source pressure is not zero). At this time, after receiving the pressure signal output by the first pressure detection module 9, the control system 2 outputs a corresponding alarm message to prompt the user. The user can then manually open the first manual valve 6 to ensure the unobstructed flow of the hydrogen refueling pipeline 1 and allow the hydrogen refueling operation to proceed normally. On the other hand, it can provide input signals for the controller 201 to control the automatic operation of the entire hydrogen refueling device.

[0053] It should be noted that the charging equipment is generally equipped with a pressure gauge, and the proper functioning of the second automatic shut-off valve 5 can be determined by observing the pressure gauge on the charging equipment. Alternatively, in some other embodiments, a pressure detection hydrogenation device can be installed at the outlet of the second automatic shut-off valve 5 to detect the pressure signal at the outlet of the second automatic shut-off valve 5.

[0054] Specifically, in this embodiment,

[0055] When the controller 201 receives the hydrogen refueling start command input from the human-machine interface panel 202, it controls the first automatic shut-off valve 3 to open and reads the pressure signals detected by the first pressure detection module 9 and the second pressure detection module 10.

[0056] When the memory in 3-5 seconds is in the following condition:

[0057] 1. When the pressure signal detected by the first pressure detection module 9 is lower than or higher than the set value, the hydrogen refueling unit stops refueling. Specifically, the controller 201 controls the first automatic shut-off valve 3 to close and controls the human-machine interface panel 202 to output an alarm message. Conversely, when the pressure signal detected by the first pressure detection module 9 is higher than the set value, the second automatic shut-off valve 5 is opened, and hydrogen refueling begins. Because the pressure signal detected by the first pressure detection module 9 (i.e., the inlet pressure of the pressure reducing valve) is lower than the set value, it cannot meet the downstream pressure requirements, so an alarm message is sent to prompt a replacement of the gas source. If the pressure signal detected by the first pressure detection module 9 is higher than the set value, it indicates that the pressure is higher than the inlet pressure of the pressure reducing valve, which could damage the equipment and its components.

[0058] 2. When the pressure signal detected by the second pressure detection module 10 is outside the set range, the hydrogen refueling device stops refueling. That is, the controller 201 controls the first automatic shut-off valve 3 to close and controls the human-machine interface panel 202 to output an alarm message. Conversely, it controls the second automatic shut-off valve 5 to open and begin hydrogen refueling. Because the pressure reducing valve outlet pressure is designed to meet the usage requirements of downstream charging or gas-consuming equipment, if the pressure signal detected by the second pressure detection module 10 (i.e., the pressure reducing valve outlet pressure) is too high, it will affect the use of downstream equipment, causing malfunctions or damage. If the pressure signal detected by the second pressure detection module 10 (i.e., the pressure reducing valve outlet pressure) is too low, it will also fail to meet the usage requirements. For example, if the downstream equipment requires an inlet pressure of 2 MPa for experimental equipment, a low pressure will prevent the experiment from proceeding normally.

[0059] During hydrogenation:

[0060] 1. When the pressure signal detected by the first pressure detection module 9 is lower or higher than the set value, the hydrogen refueling unit stops refueling. Specifically, the controller 201 controls the first automatic shut-off valve 3 and the second automatic shut-off valve 5 to close, and controls the human-machine interface panel 202 to output an alarm message. This is because if the pressure signal detected by the first pressure detection module 9 (i.e., the inlet pressure of the pressure reducing valve) is lower than the set value, it cannot meet the downstream pressure requirements, so an alarm message is sent to prompt a replacement of the gas source. If the pressure signal detected by the first pressure detection module 9 is higher than the set value, it indicates that the pressure is higher than the inlet pressure of the pressure reducing valve, which could damage the equipment and its components.

[0061] 2. When the pressure signal detected by the second pressure detection module 10 is outside the set range, the hydrogen refueling device stops refueling. Specifically, the controller 201 controls the first automatic shut-off valve 3 and the second automatic shut-off valve 5 to close, and controls the human-machine interface panel 202 to output an alarm message. Because the pressure reducing valve outlet pressure is designed to meet the usage requirements of downstream charging or gas-consuming equipment, if the pressure signal detected by the second pressure detection module 10 (i.e., the pressure reducing valve outlet pressure) is too high, it will affect the use of downstream equipment, causing malfunctions or damage. Conversely, if the pressure signal detected by the second pressure detection module 10 (i.e., the pressure reducing valve outlet pressure) is too low, it will also fail to meet the usage requirements. For example, if the downstream equipment requires an inlet pressure of 2 MPa for experimental equipment, a low pressure will prevent the experiment from proceeding normally.

[0062] When the controller 201 receives the hydrogen refueling stop command input from the human-machine interface panel 202, it controls the first automatic shut-off valve 3 and the second automatic shut-off valve 5 to close, thus completing the hydrogen refueling operation.

[0063] Specifically, in this embodiment, both the first pressure detection module 9 and the second pressure detection module 10 employ pressure transmitters.

[0064] In one embodiment, the redundant control hydrogenation unit further includes a centralized venting pipeline 11, with an inlet port and a centralized venting port 11a at its two ends. The inlet port of the centralized venting pipeline 11 is connected to the inlet end of the second automatic shut-off valve 5, and the centralized venting port 11a of the centralized venting pipeline 11 is used to connect to a preset unified emission point via a pipeline.

[0065] A third automatic shut-off valve 12 is installed on the centralized venting pipeline 11, and the third automatic shut-off valve 12 is connected to the control signal output terminal of the control system 2.

[0066] In this embodiment, by setting up a centralized venting pipeline 11, when the hydrogen refueling unit is repaired after a malfunction, or when the hydrogen refueling unit needs to be shut down for a long time, the residual gas in the hydrogen refueling unit pipeline can be discharged through the centralized venting pipeline 11.

[0067] Specifically, in this embodiment, when the controller 201 receives the release command input by the human-machine interface panel 202, the controller 201 controls the third automatic shut-off valve 12 to open and reads the pressure signals detected by the first pressure detection module 9 and the second pressure detection module 10. After the pressure signals detected by the first pressure detection module 9 and the second pressure detection module 10 return to zero within 3-5 seconds, the air pressure in each pipeline is consistent with the external atmospheric pressure, and the release is completed. The controller 201 then controls the third automatic shut-off valve 12 to close.

[0068] In one embodiment, the redundant control hydrogenation unit further includes a third manual valve 13, the inlet of which is connected to the inlet of a third automatic shut-off valve 12 via a pipeline, and the outlet of which is connected to the outlet of the third automatic shut-off valve 12 via a pipeline. The third manual valve 13 is a normally closed valve.

[0069] In this embodiment, by setting a third manual valve 13 and a third automatic shut-off valve 12, when the third automatic shut-off valve 12 fails, the function of the redundantly set third manual valve 13 can be replaced by the third automatic shut-off valve 12, ensuring the normal operation of the venting operation.

[0070] Specifically, in this embodiment, the third manual valve 13 is a manual ball valve.

[0071] In one embodiment, the redundant control hydrogenation device further includes a vacuum line 14, with an inlet port and a pump connection port at its two ends. The inlet port of the vacuum line 14 is connected to the inlet of the first automatic shut-off valve 3, and the pump connection port of the vacuum line 14 is connected to a vacuum pump 15.

[0072] The vacuum line 14 is equipped with a fourth automatic shut-off valve 16 and a fourth manual valve 17 sequentially from its air inlet port to the pump connection port.

[0073] The fourth automatic shut-off valve 16 and the vacuum pump 15 are respectively connected to the control signal output terminal of the control system 2. The fourth manual valve 17 is a normally open valve. When the hydrogenation unit is in a shutdown or maintenance state, the valve is closed.

[0074] Specifically, in this embodiment, the redundant control hydrogenation device further includes a third pressure detection module 18, which is connected to the signal input terminal of the control system 2.

[0075] The third pressure detection module 18 is installed on the vacuum line 14 and located at the outlet of the fourth manual valve 17. It is used to detect the pressure signal at the outlet of the fourth manual valve 17.

[0076] Specifically, the third pressure detection module 18 is a pressure transmitter.

[0077] Since air still exists in the pipeline of the hydrogenation device after venting, in this embodiment, by setting up a vacuum pipeline 14, the air in each pipeline of the device can be extracted by vacuuming, so that the gas pressure in the pipeline is lower than the atmospheric pressure, thereby further reducing the gas content in each pipeline and ensuring that there is basically no residual gas in the pipeline of the hydrogenation device during hydrogenation, thereby ensuring the purity of hydrogen during hydrogenation.

[0078] Specifically, in this embodiment, after the controller 201 receives the vacuuming command input from the human-machine interface panel 202, it reads the pressure signals detected by the first pressure detection module 9 and the second pressure detection module 10.

[0079] When the pressure signal detected by the first pressure detection module 9 and the second pressure detection module 10 is zero, the controller 201 controls the fourth automatic shut-off valve 16 and the vacuum pump 15 to open and start evacuating the pipeline; during the evacuation process, when the third pressure detection module 18 reaches the set value (which is lower than atmospheric pressure, generally 5-100Pa), the controller 201 controls the fourth automatic shut-off valve 16 and the vacuum pump 15 to close.

[0080] When the pressure signal detected by the first pressure detection module 9 and the second pressure detection module 10 is greater than zero, the release operation is performed first, and the vacuuming operation is performed when the pressure is equal to zero.

[0081] In one embodiment, the redundant control hydrogen refueling device further includes a combustible gas detector 19 and a flame detector 20, which are respectively connected to the signal input terminal of the controller 201.

[0082] In this embodiment, a combustible gas detector 19 detects whether there is combustible gas outside the pipeline of the hydrogen refueling device (if the pipeline leaks, hydrogen will be present outside the pipeline). When the combustible gas detector 19 detects combustible gas, the controller 201 interrupts the currently executed command, controls each automatic shut-off valve to close, and controls the human-machine interface panel 202 to output the corresponding alarm signal. Similarly, a flame detector 20 detects whether there is a flame outside the pipeline of the hydrogen refueling device. When the flame detector 20 detects a flame, the controller 201 interrupts the currently executed command, controls each automatic shut-off valve to close, and controls the human-machine interface panel 202 to output the corresponding alarm signal. This better ensures the safety of the hydrogen refueling process.

[0083] Specifically, each automatic shut-off valve in the above embodiments is an electro-pneumatic valve.

[0084] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0085] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0086] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly using hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0087] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydrogenation device with redundant control, characterized in that, The system includes a hydrogen refueling pipeline and a control system. The hydrogen refueling pipeline has an inlet port and a filling port at its two ends. The inlet port is used to connect to a gas source, and the filling port is used to connect to the device being filled. A first automatic shut-off valve, a pressure regulating valve, and a second automatic shut-off valve are sequentially provided on the hydrogenation pipeline from the gas inlet to the gas filling port. The first automatic shut-off valve and the second automatic shut-off valve are respectively connected to the control signal output terminal of the control system. The hydrogenation unit further includes a first manual valve, a manual pressure regulating valve, and a second manual valve. The inlet of the first manual valve is connected to the inlet of the first automatic shut-off valve via a pipeline, and the outlet of the first manual valve is also connected to the outlet of the first automatic shut-off valve via a pipeline. The inlet of the manual pressure regulating valve is connected to the inlet of the pressure regulating valve via a pipeline, and the outlet of the manual pressure regulating valve is also connected to the outlet of the pressure regulating valve via a pipeline. The inlet of the second manual valve is connected to the inlet of the second automatic shut-off valve via a pipeline, and the outlet of the second manual valve is also connected to the outlet of the second automatic shut-off valve via a pipeline. The manual pressure regulating valve is used to regulate the pressure difference between its inlet and outlet ends. The first manual valve, the manual pressure regulating valve, and the second manual valve are all normally closed valves.

2. The redundant control hydrogenation apparatus according to claim 1, characterized in that, The manual pressure regulating valve is either a needle valve or a shut-off valve.

3. The redundant control hydrogenation apparatus according to claim 1, characterized in that, It also includes a first pressure detection module and a second pressure detection module, which are respectively connected to the signal input terminal of the control system. The first pressure detection module is installed at the outlet of the first automatic shut-off valve and is used to detect the pressure signal at the outlet of the first automatic shut-off valve. The second pressure detection module is installed at the outlet of the pressure regulating valve and is used to detect the pressure signal at the outlet of the pressure regulating valve.

4. The redundant control hydrogenation apparatus according to claim 3, characterized in that, It also includes a centralized venting pipeline, with an inlet port and a centralized venting port at its two ends. The inlet port of the centralized venting pipeline is connected to the inlet end of the second automatic shut-off valve, and the centralized venting port is used to connect to a preset unified discharge point via a pipeline. The centralized venting pipeline is equipped with a third automatic shut-off valve, which is connected to the control signal output terminal of the control system.

5. The redundant control hydrogenation apparatus according to claim 4, characterized in that, It also includes a third manual valve, the air inlet of which is connected to the air inlet of the third automatic shut-off valve via a pipeline, and the air outlet of which is connected to the air outlet of the third automatic shut-off valve via a pipeline. The third manual valve is a normally closed valve.

6. The redundant control hydrogenation apparatus according to claim 3, characterized in that, It also includes a vacuum pumping line, with an air inlet port and a pump connection port at each end. The air inlet port of the vacuum pumping line is connected to the air inlet of the first automatic shut-off valve, and the pump connection port of the vacuum pumping line is connected to a vacuum pump. The vacuum pipeline is equipped with a fourth automatic shut-off valve and a fourth manual valve sequentially from its air inlet port to the pump connection port. The fourth automatic shut-off valve and the vacuum pump are respectively connected to the control signal output terminal of the control system.

7. The redundant control hydrogenation apparatus according to claim 6, characterized in that, The fourth manual valve is a normally open valve.

8. The redundant control hydrogenation apparatus according to claim 6, characterized in that, It also includes a third pressure detection module, which is connected to the signal input terminal of the control system, wherein, The third pressure detection module is installed on the vacuum pipeline and located at the outlet of the fourth manual valve. It is used to detect the pressure signal at the outlet of the fourth manual valve.

9. The redundant control hydrogenation apparatus according to any one of claims 1-8, characterized in that, The control system includes a controller and a human-machine interface panel. The controller is communicatively connected to the human-machine interface panel, and the signal input terminals of the first automatic shut-off valve and the second automatic shut-off valve are respectively connected to the control signal output terminal of the controller.

10. The redundant control hydrogenation apparatus according to claim 9, characterized in that, It also includes a combustible gas detector and a flame detector, which are respectively connected to the signal input terminal of the controller.

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