Hydrogen supply confluence pipeline skid-mounted system

Abstract

The hydrogen supply confluence pipeline skid-mounted system comprises a purging module, a plurality of gas supply modules, control modules corresponding to the gas supply modules and a control unit which are sequentially arranged along a gas pipeline, the purging module purges a gas conveying pipeline with inert gas, impurities and hazardous gas are replaced, and hydrogen supply safety is guaranteed; the gas supply module stores and treats hydrogen, is compatible with multiple hydrogen sources, filters impurities, adjusts pressure and stably conveys hydrogen to a subsequent system; the control module secondarily regulates the pressure to the hydrogen using pressure, monitors the purity and the flow, regulates the flow to meet the requirement, and cuts off hydrogen supply in case of abnormality; the control unit collects data in real time, automatically controls valves of all the modules, achieves purging, hydrogen supply regulation and control, gives an alarm in the case of abnormity and carries out emergency treatment, and guarantees safety and stability of the system. The problems that an existing hydrogen supply confluence pipeline system is unstable in pressure flow control, only compatible with a single hydrogen source and prone to interruption, the hydrogen purity is difficult to guarantee, safety protection is not intelligently controlled, and high-purity hydrogen cannot be safely, stably and accurately supplied are solved.

Description

Technical Field

[0001] This invention belongs to the field of gas transmission, and particularly relates to a skid-mounted system for hydrogen supply manifolds. Background Technology

[0002] A skid-mounted system, also known as a modular skid-mounted integrated system, is an integrated equipment unit that integrates the core equipment (such as pipelines, valves, instruments, control systems, and safety protection devices) required for industrial production or energy supply according to their functions, prefabricates and assembles them in the factory, and fixes them on a standardized steel base. Its core advantages include a high degree of factory prefabrication, short on-site installation cycle, small space occupation, flexible overall relocation, and the ability to reduce on-site construction errors and improve system operational stability through standardized design. In the new energy field, especially in hydrogen energy supply systems, skid-mounted systems are widely used in key links such as hydrogen pipeline manifolds, pressure regulation, and flow distribution. They serve as the core hub connecting hydrogen production and storage ends with hydrogen-using equipment (such as fuel cell stacks, hydrogen boilers, and chemical reaction units), undertaking the important function of ensuring stable hydrogen transportation and safe distribution.

[0003] Existing systems rely heavily on single valves or simple pressure regulating components for pressure regulation and flow control, lacking dynamic response and closed-loop control mechanisms. When the hydrogen source pressure fluctuates, the system cannot quickly adjust the opening of the throttling element in real time, resulting in output pressure and flow fluctuations exceeding the accuracy requirements of the hydrogen-using equipment. During start-up, shutdown, or hydrogen source switching, instantaneous pressure surges are easily generated. High-pressure pulses directly act on the precision instruments, thin-walled pipes, and equipment seals of the hydrogen-using system, causing irreversible damage such as instrument zero drift, pipe weld cracking, and accelerated aging of seals. In severe cases, it can even lead to hydrogen leakage.

[0004] Existing skid-mounted systems typically design interfaces and control logic only for a single hydrogen source, making them incompatible with other common hydrogen sources. When the sole hydrogen source experiences a supply interruption due to equipment failure, transportation delays, or insufficient production capacity, the system has no backup hydrogen source to switch to, directly causing the hydrogen-using equipment to shut down. This not only results in economic losses but may also lead to safety accidents if applied to critical scenarios such as medical care or emergency power supply. Even if some systems have reserved backup hydrogen source interfaces, the switching process relies on manual operation, which is cumbersome and time-consuming, during which the hydrogen supply pressure and flow rate may fluctuate for extended periods. Furthermore, the lack of hydrogen source purity pretreatment and testing means that the significant differences in purity between different hydrogen sources can lead to substandard purity when directly mixed and transported in existing systems. Additionally, the absence of an integrated online purity analyzer prevents real-time purity monitoring, and the introduction of impurities can cause catalyst poisoning, reduced heat exchange efficiency, and shortened equipment lifespan in hydrogen-using equipment. Summary of the Invention

[0005] The purpose of this invention is to provide a skid-mounted hydrogen supply manifold system to solve the technical problems of traditional skid-mounted hydrogen supply manifold systems, such as the inability to quickly and stably control pressure and flow, the ease with which hydrogen supply can be interrupted due to compatibility with only a single hydrogen source, low efficiency in switching hydrogen sources, and difficulty in guaranteeing hydrogen purity.

[0006] To achieve the above objectives, the specific technical solution of the hydrogen supply manifold skid-mounted system of the present invention is as follows:

[0007] A skid-mounted system for hydrogen supply manifolds includes a purging module, several gas supply modules, a control module corresponding to the gas supply modules, and a control unit arranged sequentially along a gas pipeline.

[0008] The purging module includes a purging gas storage structure, a first purging shut-off valve, a first purging pressure reducing valve, a first purging pressure detection device, a purging filter, a second purging pressure reducing valve, a second purging pressure detection device, a purging pressure relief valve, and a second purging shut-off valve arranged sequentially along the gas pipeline.

[0009] The gas supply module includes a first gas supply shut-off valve, a gas supply storage structure, a gas supply pressure detection device, a second gas supply shut-off valve, a gas supply filter, and a gas supply pressure reducing valve, arranged sequentially along the gas pipeline.

[0010] The control module includes, in sequence along the gas pipeline, a first gas pressure detection device, a first pressure relief valve, a first shut-off valve, a pressure reducing valve, a second gas pressure detection device, a second shut-off valve, a second pressure relief valve, an electrically controlled valve, a third shut-off valve, a gas composition detection device, a regulating valve, a fourth shut-off valve, a flow statistics device, and a gas interface.

[0011] The second purging shut-off valve and the first gas supply shut-off valve are connected through the gas supply pipeline, the gas supply pressure reducing valve and the control first gas pressure detection device are connected through the gas supply pipeline, and the gas interface is used to connect gas-consuming equipment.

[0012] The control unit monitors in real time the pressure data of the gas supply pressure detection device, the control of the first pressure detection device and the control of the second pressure detection device, as well as the gas composition data of the gas composition detection device, and controls the on / off of the gas pipeline by the electric control valve; the control unit controls the opening degree of the regulating valve according to the flow data fed back by the flow statistics device.

[0013] As a further improvement of the present invention, the control modules are connected by a connecting pipe, the two ends of which are connected to the gas supply pipe between the third control shut-off valve and the gas composition detection device, and a fifth control shut-off valve is provided on the connecting pipe.

[0014] As a further improvement of the present invention, the purging module is activated under the control of the control unit. When the volume content of hydrogen in the gas transmission pipeline is ≤96% or the volume content of oxygen is ≥4%, the purging module releases purging gas into the gas transmission pipeline. When the volume content of oxygen is ≤0.5%, the control unit disconnects the purging module from the gas transmission pipeline.

[0015] As a further improvement of the present invention, the gas composition detection device includes a hydrogen detector and an oxygen detector, used to detect the purity of hydrogen and the content of oxygen; the control unit monitors the data fed back by the gas composition detection device, and releases hydrogen to the gas-using equipment through the gas-using interface when the oxygen volume content is ≤0.5% and the hydrogen volume content is ≥99.995%.

[0016] As a further improvement of the present invention, the pressure of the purge gas after passing through the second purge pressure reducing valve is 0.5-0.8 MPa, the pressure of the hydrogen gas after passing through the gas supply pressure reducing valve is 1.5-1.6 MPa, and the pressure of the hydrogen gas after passing through the control pressure reducing valve is 0.5-0.8 MPa.

[0017] As a further improvement of the present invention, the gas released by the first pressure relief valve and the second pressure relief valve is discharged through the exhaust port. An active exhaust pipe is provided between the exhaust port and the gas transmission pipeline. A sixth control shut-off valve is provided on the active exhaust pipe. The active exhaust pipe is connected to the exhaust port between the third control shut-off valve and the gas composition detection device. The exhaust port centrally discharges all the released gas from the control modules.

[0018] As a further improvement of the present invention, a seventh shut-off valve is provided in parallel on both the upstream and downstream sides of the regulating valve.

[0019] As a further improvement of the present invention, the purging gas storage structure comprises several gas storage cylinders, each connected to the gas supply pipeline by a flexible metal corrugated pipe; the gas supply and storage structure is used for hydrogen storage, including hydrogen container cylinders, electrolytic hydrogen production equipment, and steam reforming hydrogen supply, and is provided with a reserved gas supply interface to increase the hydrogen supply source; the gas supply and storage structure is connected to the gas transmission pipeline by a flexible metal corrugated pipe; a reserved gas use interface is provided on the gas transmission pipeline between the flow statistics device and the gas consumption interface, serving as a backup interface for the gas consumption equipment.

[0020] As a further improvement of the present invention, a leak detection sensor is installed at the gas pipeline interface, and the control unit detects the concentration information fed back by the leak detection sensor in real time. When the hydrogen concentration is greater than 25%, the control unit issues an audible and visual alarm; when the hydrogen concentration is greater than 30%, the hydrogen supply is cut off, and the purging module is activated to release purging gas to purge and replace the gas in the gas pipeline.

[0021] As a further improvement of the present invention, the filtration accuracy of the purge filter is greater than 600 mesh, and the filtration accuracy of the air supply filter is greater than 800 mesh.

[0022] Beneficial effects:

[0023] The system of this invention, through the hierarchical configuration of the purging module, gas supply module, and control module, combined with the real-time monitoring of each gas pressure detection device by the control unit, can effectively avoid the problem of large pressure and flow fluctuations in traditional systems, and prevent pressure shocks from causing irreversible damage to instruments, pipelines, and equipment in the hydrogen-using system. At the same time, the control unit adjusts the opening of the regulating valve based on the data from the flow statistics device, so that the hydrogen supply flow accurately matches the hydrogen demand, avoids flow imbalance that leads to abnormal operation of hydrogen-using equipment, and improves the operational stability and service life of hydrogen-using equipment.

[0024] The purging module can purge the gas pipeline and, together with the control unit, monitor the gas composition inside the pipeline. This effectively removes impurities and reduces the safety hazards caused by the mixing of hydrogen and oxygen. The pressure relief valve in the control module can release overpressure gas in a timely manner, and the electrically controlled valve can quickly shut off the gas pipeline in case of abnormalities, further preventing the spread of danger. The gas composition detection device can monitor gas quality in real time, preventing substandard gas from entering hydrogen-using equipment and causing safety accidents, thus comprehensively building a safe hydrogen supply barrier.

[0025] The control unit can collect key data such as pressure, gas composition, and flow rate in real time, and automatically control the on / off state of the electronically controlled valve and adjust the valve opening. This eliminates the need for frequent manual intervention, solving the problems of traditional hydrogen supply systems that rely on manual adjustment and have low automation levels, and reducing labor costs. At the same time, intelligent control reduces human error, ensuring that the hydrogen supply parameters accurately meet the hydrogen usage requirements, and improving the reliability and accuracy of the hydrogen supply process.

[0026] The system's modules are arranged sequentially along the gas pipeline, with a clear structural layout. The purging module, gas supply module, and control module are connected in an orderly manner through the gas pipeline, facilitating quick location and maintenance by staff. The filter removes impurities from the gas, reducing pipeline blockage and equipment wear, and lowering maintenance frequency and costs. The overall skid-mounted design combined with the modular layout simplifies the on-site installation process, shortens the installation cycle, and eliminates the need for large-scale system disassembly during later maintenance, thus improving maintenance efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a skid-mounted hydrogen supply manifold system according to the present invention;

[0028] Figure 2 This is a schematic diagram of the purging module structure;

[0029] Figure 3 This is a schematic diagram of the gas supply module structure;

[0030] Figure 4 This is a schematic diagram of the control module structure;

[0031] Explanation of markings in the diagram: 1. Gas pipeline; 2. Purge module; 21. Purge gas storage structure; 22. First purging shut-off valve; 23. First purging pressure reducing valve; 24. First purging pressure detection device; 25. Purge filter; 26. Second purging pressure reducing valve; 27. Second purging pressure detection device; 28. Purge pressure relief valve; 29. ​​Second purging shut-off valve; 3. Gas supply module; 31. First gas supply shut-off valve; 32. Gas supply storage structure; 321. Reserved gas supply interface; 33. Gas supply pressure detection device; 34. Second gas supply shut-off valve; 35. Gas supply filter; 36. Gas supply pressure reducing valve; 4. Control module; 41. Control first pressure detection device; 42. Control the first pressure relief valve; 43. Control the first shut-off valve; 44. Control the pressure reducing valve; 45. Control the second gas pressure detection device; 46. Control the second shut-off valve; 47. Control the second pressure relief valve; 48. Electrically controlled valve; 49. Control the third shut-off valve; 410. Gas composition detection device; 411. Regulating valve; 4111. Control the seventh shut-off valve; 412. Control the fourth shut-off valve; 413. Flow statistics device; 414. Gas interface; 4141. Reserved gas interface; 415. Connecting pipeline; 4151. Control the fifth shut-off valve; 416. Active exhaust pipeline; 4161. Control the sixth shut-off valve; 5. Exhaust port; 6. Gas-using equipment. Detailed Implementation

[0032] To better understand the purpose, structure, and function of this invention, the following detailed description of a skid-mounted hydrogen supply manifold system is provided in conjunction with the accompanying drawings.

[0033] Example 1:

[0034] like Figure 1 The hydrogen supply manifold skid-mounted system disclosed in this embodiment is suitable for power plants, metallurgy, chemical industries, and other scenarios requiring high-purity and stable hydrogen supply. It is compatible with multiple hydrogen sources, achieving safe and precise hydrogen supply. Employing a skid-mounted modular design, it includes a purging module 2, a gas supply module 3, a control module 4 corresponding to the gas supply module 3, and a control unit, all arranged sequentially along the gas supply pipeline 1. Leak detection sensors are installed at each interface of the gas supply pipeline 1 to prevent hazards caused by hydrogen leakage under the monitoring of the control unit.

[0035] like Figure 2The purging module 2 shown is arranged along the gas pipeline 1 in the following order: purging gas storage structure 21, purging first shut-off valve 22, purging first pressure reducing valve 23, purging first gas pressure detection device 24, purging filter 25, purging second pressure reducing valve 26, purging second gas pressure detection device 27, purging pressure relief valve 28, and purging second shut-off valve 29. The purging gas storage structure 21 uses several gas cylinders to store nitrogen as the purging gas. The gas cylinders are connected to the gas pipeline 1 via a flexible metal corrugated pipe, which reduces vibration damage to the pipeline and facilitates disassembly and replacement during later maintenance. The purging filter uses a 600-mesh filter element to filter particulate dust impurities in the purging gas.

[0036] The first purge shut-off valve 22, serving as the initial control valve for the purge module 2, is an electrically operated shut-off valve with manual operation. Normally closed, it opens only when the system needs to initiate the purge function. This manually operated valve controls the connection and disconnection between the purge gas storage structure and subsequent pipelines, preventing nitrogen leakage during non-purge periods. The first purge pressure reducing valve 23 initially reduces the high-pressure nitrogen output from the purge gas storage structure 21, lowering the gas pressure to an intermediate pressure range suitable for the pressure-bearing capacity of subsequent pipelines. This lays the foundation for precise pressure regulation and prevents high-pressure gas from directly impacting downstream components. The first purge pressure detection device 24 monitors the gas pressure after the first purge pressure reducing valve 23 in real time and transmits the pressure data to the control unit. If the pressure exceeds a preset threshold, the control unit can promptly adjust the opening of the first purge pressure reducing valve 23 or issue a warning, ensuring a stable pressure reduction process. The purge filter 25 intercepts particulate dust in the nitrogen, preventing impurities from entering subsequent gas pipelines or equipment, preventing pipeline blockage, valve jamming, and instrument damage, and ensuring the cleanliness of the system. The second purging pressure reducing valve 26 performs a second precise pressure reduction on the purge gas after preliminary pressure reduction and filtration, bringing the purge gas pressure to 0.5–0.8 MPa, which meets the purging requirements of the gas transmission pipeline and satisfies the airflow intensity requirements for impurity replacement within the pipeline. The second purging pressure detection device 27 monitors the pressure downstream of the second purging pressure reducing valve 26 in real time and feeds the data back to the control unit. If the pressure is over- or under-pressurized, the control unit can adjust the opening of the second purging pressure reducing valve 26 to ensure stable nitrogen pressure. The purge pressure relief valve 28 is a safety protection component of the purging module. When the pressure downstream of the second purging pressure reducing valve 26 exceeds the set safety threshold, the purge pressure relief valve automatically opens to release the over-pressurized gas, preventing pipeline damage due to overpressure. It automatically closes after the release is complete. The second shut-off valve 29 is connected to the purging module and the main gas pipeline. It is an electric shut-off valve with manual operation function. When the hydrogen volume content in the gas pipeline is ≤96% or the oxygen volume content is ≥4%, the purging module 2 releases nitrogen to the gas pipeline 1. When the oxygen volume content is ≤0.5%, the valve closes, cutting off the connection between the purging module 2 and the main pipeline, and preventing the gas in the main pipeline from flowing back into the purging module.

[0037] like Figure 3 The gas supply module 3 shown is sequentially equipped with a first gas supply shut-off valve 31, a gas supply storage structure 32, a gas supply pressure detection device 33, a second gas supply shut-off valve 34, a gas supply filter 35, and a gas supply pressure reducing valve 36 along the gas transmission pipeline 1. The gas supply storage structure 32 stores hydrogen and is compatible with various hydrogen sources such as hydrogen cylinders and electrolytic hydrogen production equipment. It also has a reserved gas supply interface 321 for future addition of hydrogen sources and is connected to the gas transmission pipeline 1 via a flexible metal corrugated pipe. The gas supply filter 35 uses an 800-mesh filter element to remove minute impurities from the hydrogen. In this embodiment, a dual gas supply module is used, and the gas supply storage structure 32 is housed in a hydrogen cylinder.

[0038] The first gas supply shut-off valve 31 is located at the connection end between the gas supply module 3 and the gas pipeline 1. It is an electrically operated shut-off valve with manual operation. It opens when the system has completed purging and meets the hydrogen supply conditions, connecting the gas supply module to the main pipeline; it closes when the system malfunctions or needs to stop hydrogen supply, cutting off the hydrogen supply and preventing hydrogen leakage. The gas supply pressure detection device 33 monitors the hydrogen pressure at the output end of the gas supply and storage structure 32 in real time and transmits the pressure data to the control unit. If the pressure is too low (e.g., insufficient hydrogen supply) or too high (e.g., abnormal storage structure), the control unit can issue a timely warning, reminding personnel to replenish the hydrogen supply or troubleshoot the fault. The second gas supply shut-off valve 34 is located between the gas supply and storage structure 32 and the gas supply filter 35. When the gas supply filter needs to be replaced or downstream components need to be repaired, the second gas supply shut-off valve 34 is closed to cut off the hydrogen supply, ensuring safety during the repair process. The gas supply filter 35 filters out tiny particles, impurities, and moisture from the hydrogen gas, preventing impurities from entering the subsequent pressure reducing valve or control module, thus preventing valve blockage and valve core wear. It also prevents impurities from affecting hydrogen purity, ensuring the normal operation of the hydrogen-using equipment. The gas supply pressure reducing valve 36 reduces the pressure of the filtered hydrogen gas to 1.5 MPa to adapt to the pressure resistance of the control module and subsequent pressure regulation. This provides a stable input pressure for the secondary precise pressure regulation of the control module 4, while preventing high-pressure hydrogen from directly entering the control module 4 and causing component damage.

[0039] like Figure 4The control module 4 shown is arranged along the gas pipeline 2 in the following order: a first pressure detection device 41, a first pressure relief valve 42, a first shut-off valve 43, a pressure reducing valve 44, a second pressure detection device 45, a second shut-off valve 46, a second pressure relief valve 47, an electrically controlled valve 48, a third shut-off valve 49, a gas composition detection device 410, a regulating valve 411, a fourth shut-off valve 412, a flow statistics device 413, and a gas consumption interface 414. The gas composition detection device 410 includes a hydrogen detector and an oxygen detector, used to detect hydrogen purity and oxygen content in the pipeline, respectively. The flow statistics device 413 has real-time metering and total gas volume statistics functions, and is linked to the regulating valve to control the gas consumption. The gas consumption interface 414 is used to connect hydrogen-using equipment, and a reserved gas consumption interface 4141 is provided on the gas pipeline 1 between the flow statistics device 413 and the gas consumption interface 414 as a backup interface for switching the hydrogen consumption path during emergencies or maintenance.

[0040] The first gas pressure detection device 41 monitors the hydrogen pressure output from the gas supply pressure reducing valve 36 to the control module 4 in real time and transmits the data to the control unit. If the pressure exceeds the input pressure range adapted to the control module, the gas supply pressure reducing valve is adjusted in conjunction with the control module or an early warning is issued to ensure the stability of the hydrogen pressure input to the control module. The first pressure relief valve 42 automatically opens to release overpressure hydrogen when the gas pressure in the pipeline exceeds a preset threshold, and automatically closes after the pressure drops to a safe range to prevent overpressure hydrogen from damaging the pressure reducing valve, valves, and other components in the control module, ensuring the safety of the control module inlet. The first shut-off valve 43 controls the opening and closing of hydrogen into the control pressure reducing valve 44. When maintenance of the control pressure reducing valve or downstream components is required, the first shut-off valve 43 is closed to cut off the hydrogen supply and provide a safe environment for maintenance. The control pressure reducing valve 44 performs secondary precise pressure reduction of hydrogen, reducing the hydrogen pressure to 0.5 MPa, the working pressure required by the hydrogen-using equipment. The opening degree is adjusted to meet the pressure requirements of different hydrogen-using equipment, and the pressure reduction process is stable, avoiding pressure fluctuations from affecting the operation of the hydrogen-using equipment. The second pressure detection device 45 monitors the hydrogen pressure downstream of the pressure reducing valve 44 in real time and feeds the data back to the control unit. If the pressure is too high or too low, the opening of the pressure reducing valve 44 is adjusted in a timely manner to ensure that the output hydrogen pressure meets the requirements of the hydrogen-using equipment. The second shut-off valve 46 is located between the pressure reducing valve and the solenoid valve. When the solenoid valve malfunctions and needs maintenance, the second shut-off valve 46 is closed to cut off the hydrogen supply, facilitating replacement or maintenance of the solenoid valve. The second pressure relief valve 47 automatically opens to release overpressure hydrogen when the gas pressure in the pipeline exceeds a preset threshold, preventing overpressure hydrogen from entering the solenoid valve and subsequent pipelines, and protecting the safety of downstream components. The electrically controlled valve 48, directly controlled by the control unit, is a key switch for hydrogen delivery within the control module 4. When the oxygen volume content in the pipeline is ≤0.5% and the hydrogen volume content is ≥99.995%, the electrically controlled valve 48 opens. When the system detects unqualified hydrogen purity, abnormal pressure, or leakage, the control unit can quickly close the electrically controlled valve 48, cutting off the hydrogen supply to the hydrogen-using equipment and preventing the spread of danger. The third shut-off valve 49 is located between the electrically controlled valve 48 and the gas composition detection device 410. When upstream components need maintenance, the third shut-off valve 49 is closed to cut off the hydrogen supply and ensure maintenance safety; it can also be used in conjunction with other valves to switch pipelines. The hydrogen detector in the gas composition detection device 410 monitors hydrogen purity in real time, and the oxygen detector monitors oxygen content in the pipeline in real time. Both data are transmitted to the control unit. Only when the hydrogen purity meets the standard and the oxygen content meets safety requirements will the control unit allow hydrogen to enter the subsequent pipeline. The regulating valve 411 is adjusted by the control unit based on the flow data fed back by the flow statistics device, thereby controlling the hydrogen delivery flow rate. This ensures that the hydrogen supply flow rate accurately matches the real-time demand of the hydrogen-using equipment, preventing abnormal operation of the equipment due to excessively high or low flow rates. A seventh shut-off valve 4111 is connected in parallel at both ends of the regulating valve 411. This shut-off valve is opened during maintenance of the regulating valve 411 to ensure unobstructed gas supply.The fourth shut-off valve 412 is located between the regulating valve 411 and the flow statistics device 413. When upstream components need maintenance, the fourth shut-off valve 412 is closed to cut off the hydrogen supply and ensure the safety of the maintenance process. The flow statistics device 413 collects hydrogen delivery flow data in real time and transmits the data to the control unit. It also calculates the total hydrogen supply, which helps staff monitor the hydrogen supply situation. The feedback flow data is the core basis for the control unit to adjust the opening of the regulating valve. The gas interface 414 is directly connected to the hydrogen-using equipment to ensure normal hydrogen supply. The reserved gas interface 4141 serves as a backup. In case of a fault in the gas interface 414 or the corresponding pipeline, the hydrogen supply can be quickly switched to the reserved interface to avoid downtime of the hydrogen-using equipment.

[0041] The control unit employs a PLC / DCS control system, whose functions include data monitoring, logic judgment, automatic control, and safety early warning. It continuously receives pressure data from the first and second pressure detection devices in the purging module, pressure data from the supply pressure detection device in the supply module, pressure data from the first and second pressure detection devices in the control module, hydrogen purity and oxygen content data from the gas composition detection device, flow rate data from the flow statistics device, and hydrogen concentration data from the leak detection sensor at the gas pipeline interface, achieving real-time monitoring of key parameters across the entire system. Based on the monitored data, it automatically controls the opening and closing of valves in each module. For example, during the purging phase, when the hydrogen volume content in the gas pipeline is detected to be ≤96% or the oxygen volume content ≥4%, the control unit opens the first and second purging shut-off valves, starting the purging module; when the oxygen content is ≤0.5%, it closes the second purging shut-off valve, cutting off the connection between the purging module and the main pipeline. During the hydrogen supply phase, if the gas composition detection device shows that the hydrogen purity meets the standard and the oxygen content is qualified, the control unit opens the electrically controlled valve to allow hydrogen to enter the hydrogen-using equipment. If the flow rate reported by the flow statistics device does not match the hydrogen demand, the control unit adjusts the opening of the regulating valve to ensure that the flow rate accurately matches the demand. When overpressure is detected, the control unit activates the corresponding pressure relief valve to release the overpressure gas and issues an audible and visual warning. When the leak detection sensor detects that the hydrogen concentration is greater than 25% of the lower explosive limit, an audible and visual alarm is issued. When the concentration is greater than 30% of the lower explosive limit, the first gas supply shut-off valve and the electrically controlled valve are immediately closed to cut off the hydrogen supply. At the same time, the purging module is activated to purge and replace the gas pipeline to prevent safety accidents.

[0042] Example 2:

[0043] In this embodiment, the gas supply and storage structure 32 uses electrolytic hydrogen production for gas supply, and the rest is the same as in embodiment 1.

[0044] Example 3:

[0045] In this embodiment, the gas supply and storage structure 32 adopts a hydrogen container and electrolysis to produce hydrogen for gas supply, and the rest is the same as in embodiment 1.

[0046] Example 4:

[0047] In this embodiment, the gas supply and storage structure 32 uses a hydrogen container and steam reforming to produce hydrogen for gas supply, and the rest is the same as in embodiment 1.

[0048]

[0049] Table 1 Comparison of parameters for hydrogen supply skid-mounted systems

[0050] As shown in Table 1, Comparative Examples 1-4 were tested under the same conditions using commercially available single-pipe gas supply systems. These systems lacked online feedback adjustment mechanisms for flow and pressure; they were all set-value adjustments, requiring manual balancing. Comparative Example 1 used a hydrogen container for gas supply; Comparative Example 2 used hydrogen produced by electrolysis; and Comparative Example 3 used hydrogen produced by steam reforming. The time required to start nitrogen purging (min) is the time required for nitrogen purging to reach the acceptable level; the time required for hydrogen flow and pressure to stabilize (min) refers to the time required for the gas to enter and exit with acceptable purity flow and pressure under these conditions; the time required to rebalance after changing the gas source (min) refers to the time required to output hydrogen with acceptable purity, flow, and pressure again after switching / using hydrogen from different sources, including the time required to disassemble and replace gas source pipelines, flanges, etc.; the time required for flow and pressure to stabilize after switching pipelines (min) is the time required for hydrogen to go from an unstable state to outputting hydrogen with acceptable purity, flow, and pressure when switching from a single pipeline supply to another pipeline supply or switching to a common gas supply; the adjustment time 1 required according to the fluctuation of gas-using equipment is for the hydrogen system or The time required for the equipment to restore the pressure and flow rate settings when the required hydrogen consumption fluctuates within ±(0-5%); the adjustment time required for the gas-consuming equipment to restore the pressure and flow rate settings when the required hydrogen consumption fluctuates within ±(5-15%); the adjustment time required for the gas-consuming equipment to restore the pressure and flow rate settings when the required hydrogen consumption fluctuates within ±(15-30%); the adjustment time required for the gas-consuming equipment to restore the pressure and flow rate settings when the required hydrogen consumption fluctuates within ±(30-50%); and the time required for alarm and emergency response are the time required for the system's audible and visual alarms and exhaust dispersion linkage.

[0051] As can be seen from the comparison in Table 1, the hydrogen supply manifold skid system adopted in this invention is quick to install, saving time, floor space, and volume. Its ease of inspection, maintenance, and parts replacement is far superior to traditional gas supply systems. It also features a real-time detection and control system, high efficiency, safety, and long service life; it has rapid alarm and short emergency response times. It can quickly reach the required flow rate and pressure for hydrogen-using equipment, rapidly self-regulating and balancing, saving time. The time required for rebalancing after changing the gas source and for stabilizing flow and pressure after switching pipelines is significantly reduced, saving more than 6 times the time compared to traditional gas supply equipment. Its gas supply pressure fluctuation response is fast, quickly stabilizing to the required operating conditions for the equipment, saving more than 20 times the time compared to traditional gas supply equipment.

[0052] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A hydrogen bus pipe skid system, characterized by, The purge module, the gas supply module, the control module and the control unit are sequentially arranged along the gas pipeline; The purge module comprises a purge gas storage structure, a purge first stop valve, a purge first pressure reducing valve, a purge first pressure detecting device, a purge filter, a purge second pressure reducing valve, a purge second pressure detecting device, a purge pressure relief valve and a purge second stop valve, which are sequentially arranged along the gas pipeline; The gas supply module comprises a gas supply first stop valve, a gas supply gas storage structure, a gas supply pressure detecting device, a gas supply second stop valve, a gas supply filter and a gas supply pressure reducing valve, which are sequentially arranged along the gas pipeline; The control module comprises a control first pressure detecting device, a control first pressure relief valve, a control first stop valve, a control pressure reducing valve, a control second pressure detecting device, a control second stop valve, a control second pressure relief valve, an electrically controlled valve, a control third stop valve, a gas component detecting device, a regulating valve, a control fourth stop valve, a flow rate counting device and a gas utilization interface, which are sequentially arranged along the gas pipeline; The purge second stop valve and the gas supply first stop valve are connected by the gas pipeline, the gas supply pressure reducing valve and the control first pressure detecting device are connected by the gas pipeline, and the gas utilization interface is used to connect a gas utilization device; The control unit monitors the pressure data of the gas supply pressure detecting device, the control first pressure detecting device and the control second pressure detecting device, the gas component data of the gas component detecting device, and controls the on-off of the electrically controlled valve according to the flow rate data fed back by the flow rate counting device.

2. The hydrogen-supplying manifold skid system according to claim 1, characterized by, The control modules are connected by a communication pipeline, the communication pipeline is connected to the gas pipeline between the control third stop valve and the gas component detecting device, and a control fifth stop valve is arranged on the communication pipeline.

3. The hydrogen donor pipe ram system of claim 1, wherein, The purge module is started under the control of the control unit, the purge module releases purge gas when the volume content of hydrogen is less than or equal to 96% or the volume content of oxygen is greater than or equal to 4% in the gas pipeline, and the control unit cuts off the connection between the purge module and the gas pipeline when the volume content of oxygen is less than or equal to 0.5%.

4. The hydrogen donor pipe ram system of claim 1, wherein, The gas component detecting device comprises a hydrogen detector and an oxygen detector, which are used to detect the purity of hydrogen and the content of oxygen, and the control unit monitors the data fed back by the gas component detecting device, and releases hydrogen to the gas utilization device through the gas utilization interface when the volume content of oxygen is less than or equal to 0.5% and the volume content of hydrogen is greater than or equal to 99.99%.

5. The hydrogen donor pipe ram system of claim 1, wherein, The pressure of the purge gas after passing through the purge second pressure reducing valve is 0.5-0.8 MPa, the pressure of hydrogen after passing through the gas supply pressure reducing valve is 1.5-1.6 MPa, and the pressure of hydrogen after passing through the control pressure reducing valve is 0.5-0.8 MPa.

6. The hydrogen-supplying pipe pigging system according to claim 1, wherein The control first pressure relief valve and the control second pressure relief valve release gas through the exhaust port, and a driven exhaust pipeline is arranged between the exhaust port and the gas pipeline, and a control seventh stop valve is arranged on the driven exhaust pipeline.

7. The hydrogen-supplying pipe pigging system according to claim 1, wherein A control seventh stop valve is arranged on both sides of the regulating valve in parallel.

8. The hydrogen-supplying pipe pigging system according to claim 1, wherein The purge gas storage structure is a plurality of gas storage cylinders, and the gas supply pipeline is connected by a metal bellows soft connection.

9. The hydrogen-supplying pipe pigging system according to claim 1, wherein A gas supply reservation interface is arranged on the gas supply pipeline connected with the gas storage structure and the gas pipeline, which is used to increase the supply source of hydrogen.

10. The hydrogen-supplying pipe pigging system according to claim 1, wherein A leak detection sensor is arranged at the interface of the gas pipeline, and a control unit detects the concentration information fed back by the leak detection sensor in real time. The filtering precision of the purge filter is greater than 600 mesh, and the filtering precision of the gas supply filter is greater than 800 mesh.

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