System suitable for simultaneous inflation and deflation of multiple gas cylinders on rocket

Abstract

The invention provides a system suitable for simultaneous inflation and deflation of multiple gas cylinders on a rocket, the system at least comprises a gas source cylinder group, an intelligent pressure reduction redundancy unit and a redundancy gas distribution unit which are connected in sequence, and the other end of the redundancy gas distribution unit is connected with a gas cylinder system on the rocket. The intelligent pressure reduction redundant unit comprises a plurality of pressure reduction branches which are arranged in a redundant mode, and each pressure reduction branch is provided with an independent pressure reduction valve. The redundant gas distribution unit comprises a plurality of gas distribution branches, and each gas distribution branch independently controls inflation and deflation of the corresponding rocket gas cylinder. The gas source bottle set is connected with inlets of the multiple pressure reduction branches arranged in a redundant mode, outlets of the pressure reduction branches are gathered into one path and then connected with the multiple gas distribution branches, and an outlet of each gas distribution branch is connected with the corresponding rocket gas bottle. At least one pressure reduction branch and a gas distribution branch connected with a to-be-inflated gas cylinder on a rocket are controlled to be conducted through the intelligent measurement and control unit, and the gas source cylinder set inflates the multiple gas cylinders on the rocket at the same time through the conducted pressure reduction branch and the conducted gas distribution branch.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of space launch vehicle, in particular to a system for simultaneously charging and discharging multiple gas cylinders on a rocket. BACKGROUND

[0002] The rocket gas cylinder system is a key component of the propulsion system, which is composed of high-pressure gas cylinders, pipelines, valves and control units. Its core function is to store high-pressure gas (such as helium, nitrogen) to provide propellant tank pressurization, pneumatic control and attitude adjustment for the entire flight process of the rocket, and to ensure system safety. With the development of double-low-temperature reusable liquid rockets, the number of gas cylinder specifications and types required on the rocket increases, resulting in a significant increase in the complexity of the ground gas supply system and the cost.

[0003] Reusable rockets aim for short test and launch cycles, while traditional gas cylinder charging and discharging tests usually have a long cycle and rely heavily on manual operation. After low-temperature propellant filling, the ambient temperature drops, causing the gas cylinder pressure to decrease. Personnel need to operate the ground gas supply station and the manual valve on the rocket before launch, which is difficult to achieve unattended operation and poses a safety hazard.

[0004] In addition, although carbon fiber winding gas cylinders can reduce the weight of the rocket, the composite material is extremely sensitive to temperature: near-adiabatic compression during charging may cause local overheating, exceeding the glass transition temperature of the resin matrix (60-80℃); and the expansion during discharging easily causes frost on the outer wall, and the material becomes brittle at low temperatures, easily producing microcracks. Therefore, relevant specifications (such as GJB9383) strictly limit the working temperature range to -40℃ to 60℃, and the charging and discharging rate must be accurately controlled. However, the existing charging and discharging control methods have certain limitations.

[0005] Therefore, there is an urgent need to provide a rocket gas cylinder charging and discharging system that can balance automatic control, high reliability, multi-channel coordination, accurate control of charging and discharging rate, and thermal management, to meet the urgent needs of reusable rockets for rapid testing and launching, unattended operation, and safety and reliability. SUMMARY

[0006] To solve the above technical problems, the present application provides a system for simultaneously charging and discharging multiple gas cylinders on a rocket, which uses a fully automatic control system to simultaneously charge and discharge multiple gas cylinders on the rocket.

[0007] The application provides a system for simultaneously charging and discharging multiple gas cylinders on a rocket, which comprises a gas source cylinder group, an intelligent pressure reduction redundancy unit, a redundancy gas distribution unit and an intelligent measurement and control unit. The gas source cylinder group is used for storing high-pressure gas to supply gas to downstream equipment. The intelligent pressure reduction redundancy unit comprises at least multiple pressure reduction branches arranged in redundancy, each of which is provided with an independent pressure reduction valve. The redundancy gas distribution unit comprises multiple gas distribution branches, each of which independently controls the charging and discharging of a corresponding gas cylinder on the rocket. The intelligent measurement and control unit is in communication connection with the intelligent pressure reduction redundancy unit and the redundancy gas distribution unit. The gas source cylinder group is connected with multiple pressure reduction branch inlets arranged in redundancy, respectively. The outlets of the pressure reduction branches are gathered into one outlet and then connected with multiple gas distribution branches, respectively. The outlet of each gas distribution branch is connected with a corresponding gas cylinder on the rocket. At least one pressure reduction branch and the gas distribution branch connected with a gas cylinder to be charged on the rocket are turned on by the intelligent measurement and control unit, so that the gas source cylinder group simultaneously charges multiple gas cylinders on the rocket through the turned-on pressure reduction branches and gas distribution branches. During the charging process, the intelligent measurement and control unit controls the charging and discharging rate by adjusting the pressure of the pressure reduction valve on the corresponding pressure reduction branch in unit time. Each gas distribution branch is externally connected with a discharging electromagnetic valve. The pressure reduction branches, the gas distribution branches and the discharging electromagnetic valves are turned off by the intelligent measurement and control unit, so that the gas cylinders on the rocket are discharged. During the discharging process, the intelligent measurement and control unit judges whether the discharging rate of the gas cylinders on the rocket meets the set requirement in real time. If not, the corresponding discharging electromagnetic valve is turned off for a period of time for time compensation, so as to control the discharging rate of the gas cylinders.

[0008] In one embodiment, the gas source cylinder group comprises at least several high-pressure gas cylinders, each of which is provided with an independently controlled first stop valve at the outlet branch. The branches are gathered into a first total line through a high-pressure pipeline, and then connected with multiple gas distribution branches through a second stop valve, respectively. A first pressure transmitter in communication connection with the intelligent measurement and control unit is arranged on the first total line, which is used for monitoring the gas supply pressure of the gas source cylinder group in real time and giving an alarm prompt through the intelligent measurement and control unit when the pressure is insufficient.

[0009] In one embodiment, multiple pressure transmitters and multiple control valves are arranged on the pressure reduction branches and the gas distribution branches, respectively. The intelligent measurement and control unit is in communication connection with the pressure transmitters and at least part of the control valves. The pressure transmitters are used for monitoring the pressure data at the positions. The intelligent measurement and control unit collects the pressure data of the pressure transmitters to obtain the pressure conditions at the positions, and drives the corresponding control valves to adaptively act according to the pressure conditions.

[0010] In one embodiment, the control valve arranged on the pressure reducing branch at least comprises: a manual cut-off valve arranged in series between the second cut-off valve and the redundant gas distribution unit, the pressure reducing valve, the high-pressure electromagnetic valve and the check valve; the pressure reducing valve and the high-pressure electromagnetic valve are respectively in communication connection with the intelligent measurement and control unit; when the on-board gas cylinder system is being filled, manually open all the manual cut-off valves on the pressure reducing branches, and control the pressure reducing valve and the high-pressure electromagnetic valve on one of the pressure reducing branches to be opened through the intelligent measurement and control unit.

[0011] In one embodiment, the pressure transmitter arranged on the pressure reducing branch at least comprises: a second pressure transmitter arranged at the inlet end of the pressure reducing branch, and a third pressure transmitter arranged at the outlet end; the second pressure transmitter is used for monitoring the pressure of the gas entering the pressure reducing branch and feeding back to the intelligent measurement and control unit; the third pressure transmitter is used for monitoring the pressure of the reduced gas and feeding back to the intelligent measurement and control unit.

[0012] In one embodiment, the outlets of each of the pressure reducing branches are connected with each of the gas distribution branches after being gathered into a second total line; the gas distribution branch at least comprises: a gas collecting pipe, a gas distribution electromagnetic valve and a fourth pressure transmitter in communication connection with the intelligent measurement and control unit; the inlet of the gas collecting pipe is connected with the second total line, and the outlet is connected with the corresponding on-board gas cylinder through the gas distribution electromagnetic valve; the fourth pressure transmitter is arranged between the gas distribution electromagnetic valve and the on-board gas cylinder, and is used for monitoring the pressure of the gas in the gas distribution branch; the intelligent measurement and control unit collects the monitoring data of the fourth pressure transmitter, and judges whether the gas distribution electromagnetic valve on the corresponding gas distribution branch is opened or closed through the change of the monitored pressure value.

[0013] In one embodiment, the gas distribution electromagnetic valve comprises a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve, the first electromagnetic valve and the second electromagnetic valve are connected in parallel and then connected in series between the gas collecting pipe and the third electromagnetic valve, and the other end of the third electromagnetic valve is connected with the corresponding on-board gas cylinder; the fourth pressure transmitter is arranged on the outlet side of the third electromagnetic valve.

[0014] In one embodiment, the gas collecting pipe is provided with a fifth pressure transmitter and a first gas discharge electromagnetic valve in communication connection with the intelligent measurement and control unit; the fifth pressure transmitter is used for monitoring the pressure of the gas collecting pipe, and if the monitoring result exceeds the set value, the first gas discharge electromagnetic valve is controlled to be opened for gas discharge through the intelligent measurement and control unit.

[0015] In one embodiment, the gas cylinder system includes at least medium- and high-pressure gas cylinders and medium- and low-pressure gas cylinders, and the redundant gas distribution unit includes at least a medium- and high-pressure gas distribution branch for distributing gas to the medium- and high-pressure gas cylinders and a medium- and low-pressure gas distribution branch for distributing gas to the medium- and low-pressure gas cylinders; the medium- and high-pressure gas distribution branch is connected to the medium- and high-pressure gas cylinders via a fourth solenoid valve, and the medium- and low-pressure gas distribution branch is connected to the medium- and low-pressure gas cylinders via a fifth solenoid valve.

[0016] In any of the above embodiments, the intelligent measurement and control unit includes at least: a human-machine interaction module, a data acquisition circuit module, a redundant PLC measurement and control combination, a relay execution combination, and an energy-saving resistor module; the human-machine interaction module is used to set the target pressure for filling the on-board gas cylinder, modify control parameters, and issue control commands, thereby realizing remote automatic control of the on-board gas cylinder system's filling and discharging; the data acquisition circuit module is used to collect monitoring data from each pressure transmitter and send it to the redundant PLC measurement and control combination, which controls the relay execution combination to drive the corresponding solenoid valve based on the monitoring data; the energy-saving resistor module is used to protect the working life of the solenoid valve and prevent the coil from overheating due to prolonged high-current power supply.

[0017] The present invention provides a system adapted for the simultaneous filling and discharging of multiple gas cylinders on an arrow, which has at least one of the following beneficial effects: I. In traditional solutions, both the ground-based gas supply and distribution subsystem and the onboard gas cylinder filling and discharging system rely on manual operation, making unmanned operation difficult. This invention integrates these two systems through unified ground management and control. It replaces the manual valves on the traditional gas distribution platform with remotely controllable valves, and the solenoid valves are powered by a ground-based intelligent monitoring and control system, supporting programmed and automated operation. This solution eliminates the manual operation step on the rocket during the pre-launch process, reduces manual intervention in the ground-based gas supply system, thereby streamlining personnel, improving the safety of personnel and equipment during rocket launch missions, and ultimately achieving unmanned operation throughout the entire pre-launch process.

[0018] Second, this invention adopts a design concept of a shared pressure reducing unit, dividing the system into multiple pressure levels based on different pressure requirements, and configuring a dedicated gas distribution unit for each level. Gas distribution units at different pressure levels are safely isolated from each other through remotely controllable valves. This design not only reduces the number of pressure reducing units in the ground gas supply system, but also effectively reduces the operating pressure level required by each gas distribution unit, thereby significantly reducing system setup costs and subsequent maintenance costs.

[0019] Third, this invention, based on the testing and operation requirements of complex gas cylinder systems, programmatically designs the gas cylinder filling and discharging process. This invention controls the filling and discharging rate by adjusting the set pressure of the pressure reducing valve per unit time, enabling all gas cylinders to adopt a unified pressure reduction and regulation strategy, independent of the specific pressure and volume of the cylinders. This allows cylinders carrying the same medium to share a single pressure reducing unit. Using this method, the filling rate is not strongly correlated with the cylinder pressure; the system only needs to determine whether the cylinder pressure has reached the target value, significantly reducing data interaction and valve actions, and significantly improving the overall reliability of the system.

[0020] Upon reading the detailed embodiments and examining the accompanying drawings, those skilled in the art will recognize additional features and advantages. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the principle of a system for simultaneously filling and releasing multiple gas cylinders on an arrow, according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the intelligent pressure reduction and redundancy unit according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the redundant gas distribution unit according to an embodiment of the present invention.

[0025] Figure 4 This is a control strategy diagram for simultaneously filling multiple gas cylinders using the filling and releasing system of this invention.

[0026] Figure 5 This is a control strategy diagram for simultaneously releasing gas from multiple gas cylinders using the gas filling and releasing system of this invention.

[0027] Explanation of reference numerals in the attached figures: 1-Gas source cylinder group; 11-First shut-off valve; 12-Second shut-off valve; 2-Intelligent pressure reducing redundancy unit; 211-Pressure reducing valve; 212-Electrical proportional valve; 22-Manual shut-off valve; 23-High-pressure solenoid valve; 231-First high-pressure solenoid valve; 232-Second high-pressure solenoid valve; 24-Check valve; 241-First check valve; 242-Second check valve; 25-First filter; 3-Redundant gas distribution unit; 311-First venting solenoid valve; 312-Second venting solenoid valve; 32-Gas collection pipe; 321-First gas collection pipe; 322-Second gas collection pipe; 33-Distribution unit Solenoid valve; 331-First solenoid valve; 332-Second solenoid valve; 333-Third solenoid valve; 34-Normally open solenoid valve; 35-Safety valve; 36-Second filter; 4-Intelligent measurement and control unit; 5-Onboard gas cylinder system; 51-Medium and low pressure gas cylinder; 52-Medium and high pressure gas cylinder; 53-Fourth solenoid valve; 54-Fifth solenoid valve; 61-First pressure transmitter; 62-Second pressure transmitter; 63-Third pressure transmitter; 64-Fourth pressure transmitter; 65-Fifth pressure transmitter; 66-Sixth pressure transmitter; L1-First main circuit; L2-Second main circuit. Detailed Implementation

[0028] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and to exemplify the principles of the present invention, and are not configured to limit the present invention. In addition, the structural components in the drawings are not necessarily drawn to scale. For example, the dimensions of some structural components or regions in the drawings may be enlarged for other structural components or regions to aid in the understanding of the embodiments of the present invention.

[0029] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the embodiments of the present invention. In the description of the present invention, it should be noted that, unless otherwise stated, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0030] Furthermore, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a structure or component that includes a list of elements includes not only those elements but also other structural elements that are not expressly listed or inherent to the structure or component. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the article or apparatus that includes the element.

[0031] Spatial relation terms such as "below," "under," "under," "low," "above," "on," and "high" are used for descriptive convenience to explain the positioning of one element relative to a second element, indicating that these terms are intended to cover different orientations of the device, in addition to those different from those shown in the figure. Furthermore, phrases such as "one element on / below another element" can indicate that two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first" and "second" are also used to describe individual elements, areas, parts, etc., and should not be considered limiting. Similar terms are used throughout the description to refer to similar elements.

[0032] It will be apparent to those skilled in the art that the present invention can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention.

[0033] This invention provides a system adapted for the simultaneous filling and discharging of multiple gas cylinders on an arrow, used to automatically fill and discharge multiple gas cylinders with the same or different pressures simultaneously. While existing solutions transfer operators from the front end to the back end, achieving initial unattended operation, their automated filling rate control program is relatively complex: it requires real-time acquisition of the pressure of the gas cylinders on the arrow and judgment of the pressure change rate, triggering valve action to adjust filling based on excessively high or low rates. This process suffers from frequent data interaction and excessive solenoid valve actuation, affecting equipment lifespan and system reliability. Furthermore, since the filling rates corresponding to different cylinder volumes and pressures are inconsistent, independent pressure reducing valves must be configured for each cylinder, making it impossible to share pressure reducing units. This invention systematically optimizes existing gas cylinder filling technology. The filling and discharging system of this invention can simultaneously control the filling and discharging process and rate of multiple gas cylinder systems on the arrow, featuring low data interaction and simple, efficient control logic, thus contributing to improved overall system reliability.

[0034] See Figure 1The present invention provides a system adapted for simultaneous filling and discharging of multiple gas cylinders on an rocket, used to supply gas to the rocket's gas cylinder system 5, and includes at least: a gas source cylinder group 1, an intelligent pressure reduction redundancy unit 2, a redundant gas distribution unit 3, and an intelligent measurement and control unit 4. The intelligent pressure reduction redundancy unit 2, the redundant gas distribution unit 3, and the intelligent measurement and control unit 4 constitute a ground-based gas supply subsystem. One set of intelligent pressure reduction redundancy units 2 can simultaneously meet the pressure regulation requirements of multiple sets of redundant gas distribution units 3. In this embodiment, the gas source cylinder group 1 is used to store high-pressure gas and supply gas to downstream equipment. The intelligent pressure reduction redundancy unit 2 includes at least multiple redundantly configured pressure reduction branches (as illustrated in the figure of this embodiment). Figure 1 The diagram shows two pressure-reducing branches. Each pressure-reducing branch is equipped with an independent pressure-reducing valve 211 to individually control the gas pressure of each branch. The redundant gas distribution unit 3 includes multiple gas distribution branches, each independently controlling the filling and releasing of the corresponding onboard gas cylinder. The intelligent monitoring and control unit 4 is communicatively connected to both the intelligent pressure-reducing redundancy unit 2 and the redundant gas distribution unit 3, receiving real-time monitoring data (such as pressure) from the pressure-reducing and gas distribution branches and performing corresponding control operations based on the monitoring data.

[0035] The gas source cylinder group 1 is connected to the inlets of multiple redundant pressure-reducing branches. The outlets of these branches are combined into one and then connected to multiple gas distribution branches. The outlet of each gas distribution branch is connected to the corresponding on-rocket gas cylinder. The intelligent control unit 4 controls the connection of at least one pressure-reducing branch and the gas distribution branch connected to the on-rocket gas cylinder to be filled. The gas source cylinder group simultaneously fills multiple on-rocket gas cylinders through the connected pressure-reducing and gas distribution branches. During the filling process, the intelligent control unit controls the filling and discharging rate by adjusting the pressure of the pressure-reducing valve 211 on the corresponding pressure-reducing branch within a unit of time.

[0036] In this embodiment, each gas distribution branch is externally connected to a second venting solenoid valve 312 to vent the on-board gas cylinder system 5. The intelligent control unit 4 controls the closure of each pressure-reducing branch and gas distribution branch, and controls the opening of the second venting solenoid valve 312, thereby venting the on-board gas cylinder. During the venting process, the intelligent control unit 4 continuously monitors whether the venting rate of the on-board gas cylinder meets the set requirements. If not, the intelligent control unit 4 controls the corresponding second venting solenoid valve 312 to close for a period of time to compensate for the venting, thereby controlling the venting rate of the gas cylinder.

[0037] The inflation / deflation system of this embodiment uses a method to control the inflation rate of the on-rocket gas cylinder by adjusting the pressure regulating valve within a unit time to address the issue of inflation rate differences caused by variations in cylinder volume or target inflation pressure. Generally, the inflation rate is fastest when the cylinder is full, and decreases as the cylinder pressure drops. A pause time is used to compensate for the rapid pressure drop in the cylinder caused by an excessively fast inflation rate at the beginning of the inflation process. This significantly reduces the frequency of valve operation, facilitates the sharing of pressure reducing units, greatly simplifies the programming of automation logic, significantly reduces data interaction, and improves the reliability of the measurement and control system. The on-rocket gas cylinder inflation rate control method employs a staged inflation strategy, which solves the problem of excessively slow inflation speed at the end of the inflation phase caused by orifice plate flow limiting in existing technologies, significantly improving work efficiency and shortening the launch cycle.

[0038] It is worth noting that the onboard gas cylinder system divides the cylinders into several pressure levels (such as medium-high pressure cylinder groups and medium-low pressure cylinder groups) according to different filling targets. Cylinders of the same pressure level can be supplied by the same ground gas distribution unit to reduce the configuration of ground gas distribution units. In other words, a gas distribution branch can be connected to multiple cylinders in a certain pressure level cylinder group. In addition, the onboard gas cylinder system is divided into different cylinder groups according to different functions. Each group of cylinders is equipped with remotely controllable solenoid valves and pressure transmitters for monitoring cylinder pressure at the filling / draining port and the gas supply port. The real-time pressure value of the onboard cylinders is received, demodulated, and processed by the telemetry ground test instrument before being sent back to the ground integrated server. The intelligent measurement and control unit then receives and analyzes the real-time pressure of the onboard cylinders and makes control operations, thereby realizing the closed-loop control of onboard cylinder filling and discharging.

[0039] See Figure 1 In this embodiment, gas cylinder groups of different pressure levels can be connected to different gas distribution branches. For example, the gas cylinder system includes at least a medium-high pressure gas cylinder 52 and a medium-low pressure gas cylinder 51, and the redundant gas distribution unit includes at least a medium-high pressure gas distribution branch for distributing gas to the medium-high pressure gas cylinder 52 and a medium-low pressure gas distribution branch for distributing gas to the medium-low pressure gas cylinder 51. The medium-high pressure gas distribution branch is connected to the medium-high pressure gas cylinder 52 via a fourth solenoid valve 53, and the medium-low pressure gas distribution branch is connected to the medium-low pressure gas cylinder 51 via a fifth solenoid valve 54. The fourth solenoid valve 53 is used to control the switching on and off of the medium-high pressure gas cylinder 52, and the fifth solenoid valve 54 is used to control the switching on and off of the medium-low pressure gas cylinder 51.

[0040] When gas cylinders of different pressures are being filled simultaneously, the first gas distribution branch (medium-low pressure gas distribution branch) is used first to fill the medium-low pressure cylinders. The intelligent control unit continuously monitors the relationship between the current cylinder pressure and the target pressure. After one or more cylinders connected to the first gas distribution branch are filled, the intelligent control unit switches to the second gas distribution branch (medium-high pressure gas distribution branch) to fill the high pressure cylinders. The filling process ends when all cylinders are filled. During the filling process, the intelligent control unit intelligently determines the opening timing of the filling solenoid valve based on the current cylinder pressure on the rocket and the ground filling pressure. When the ground filling pressure approaches the cylinder pressure on the rocket, the program controls the corresponding cylinder's filling solenoid valve to open, preventing abnormal opening of the solenoid valve due to the ground pressure exceeding the cylinder pressure.

[0041] When the rocket's gas cylinders begin filling, the intelligent monitoring and control unit sets the initial pressure of the pressure reducing valve based on the minimum current pressure of all cylinders, ensuring this initial pressure is not lower than the valve's minimum allowable setting pressure. Subsequently, the pressure reducing valve's set pressure is gradually increased at fixed intervals according to preset time intervals, thereby controlling the cylinder filling rate. Both the adjustment interval and the adjustment range are configurable parameters.

[0042] See also Figure 1 and Figure 2 In one embodiment, the gas source cylinder group includes at least several high-pressure gas cylinders. Each high-pressure gas cylinder's outlet branch is equipped with an independently controlled first shut-off valve 11 (gas cylinder valve). The number of gas cylinders requiring valve opening is determined based on gas demand. The number of gas cylinders to be opened is flexibly selected by switching the first shut-off valve 11 (gas cylinder valve) on and off, and the first shut-off valve 11 is closed during non-testing periods. The outlet branches of each high-pressure gas cylinder are converged into a first main line L1 via high-pressure pipelines and then connected to multiple gas distribution branches via a second shut-off valve 12 (gas source valve). The second shut-off valve 12 is used to isolate the gas source cylinder group and the ground gas supply subsystem. When the first shut-off valve 11 and the second shut-off valve 12 are opened, the ground gas supply subsystem starts working. A first pressure transmitter 61 is provided on the first main line, which is communicatively connected to the intelligent monitoring and control unit 4. The first pressure transmitter 61 is used to monitor the gas supply pressure of the gas source cylinder group 1 in real time and issue an alarm prompt through the intelligent monitoring and control unit 4 when the pressure is insufficient. The operator opens the first shut-off valve 11 of the remaining gas cylinder according to the prompts, thereby supplementing the gas supply pressure to meet the filling requirements.

[0043] In the above embodiments, both the pressure reducing branch and the gas distribution branch are equipped with multiple pressure transmitters and multiple control valves. The intelligent monitoring and control unit is communicatively connected to the pressure transmitters and at least some of the control valves. The pressure transmitters are used to monitor the pressure data at their location. The intelligent monitoring and control unit collects the pressure data from the pressure transmitters to obtain the pressure conditions at the monitored locations and drives the corresponding control valves to perform adaptive actions based on the pressure conditions. For example, the intelligent monitoring and control unit determines whether the pressure reducing valve is operating normally based on the pressure transmitters on the pressure reducing branch, and adjusts the opening of the pressure reducing valve when the operating condition is abnormal.

[0044] The core pressure regulating components of a pressure reducing valve mainly include springs, diaphragms, and pistons. Spring-driven pressure regulating structures are mostly used in manual pressure reducing valves; this embodiment uses a diaphragm-type drive structure. The diaphragm-type drive structure inputs a certain low air pressure into the upper chamber of the pressure reducing valve. The diaphragm drive head of the pressure reducing valve proportionally amplifies the air pressure and acts on the pressure reducing valve valve, thereby realizing the opening and closing of the pressure reducing valve valve and precise pressure regulation. In this embodiment, an electro-proportional valve 212 is used to precisely control the air pressure of the drive head of the pressure reducing valve 211. The electro-proportional valve 212 is controlled by a 4 to 20 mA current input signal to control its output air pressure. The input current and output pressure are approximately linearly proportional. According to the pre-set proportional relationship, the output pressure of the main body of the pressure reducing valve 211 can be stably controlled.

[0045] See also Figure 1 In one embodiment, the control valves installed on the pressure-reducing branches include at least: a manual shut-off valve 22, a pressure-reducing valve 211, a high-pressure solenoid valve 23, and a check valve 24, which are connected in series between the second shut-off valve and the redundant gas distribution unit. The pressure-reducing valve 211 and the high-pressure solenoid valve 23 are respectively communicatively connected to the intelligent measurement and control unit 4. When the onboard gas cylinder system 5 is being filled, the manual shut-off valves 22 on all pressure-reducing branches are manually opened, and the pressure-reducing valve 211 and the high-pressure solenoid valve 23 on one of the pressure-reducing branches are controlled to open by the intelligent measurement and control unit 5. Normally, the pressure-reducing valve 211 cannot be used as a shut-off valve, so when the pressure-reducing valve 211 is not working, the manual shut-off valve 22 upstream of it needs to be closed. The manual shut-off valve 22 on each pressure-reducing branch is used to control the on / off of the current pressure-reducing branch, which can protect the pressure-reducing valve 211 from gas source impact when it is not working. In addition, a first filter 25 is provided between the second shut-off valve 12 and the manual shut-off valve 22. The gas output from the gas cylinder system is first filtered through the first filter 25 before entering the ground gas supply subsystem, thereby ensuring that the medium is clean and free of excess impurities.

[0046] The embodiments and accompanying drawings in this specification are illustrated using the redundant configuration of two pressure-reducing branches and two gas distribution branches as an example, and are not intended to limit the scope of protection of this invention.

[0047] See also Figure 1 and Figure 2When using the inflation / deflation system of this embodiment to inflate the rocket's gas cylinder, if the first pressure-reducing branch is selected for inflation and the second pressure-reducing branch is used as a backup, the first high-pressure solenoid valve 231 downstream of the first pressure-reducing branch can be set to normally open, and the second high-pressure solenoid valve 232 on the second pressure-reducing branch can be set to normally closed. When the first high-pressure solenoid valve 231 of the first pressure-reducing branch fails, the first high-pressure solenoid valve 231 can be closed, the second high-pressure solenoid valve 232 can be opened, and the backup pressure-reducing branch can be switched for pressure regulation and gas supply.

[0048] Furthermore, a first check valve 241 is installed downstream of the first high-pressure solenoid valve 231 in the inflation direction, and a second check valve 242 is installed downstream of the second high-pressure solenoid valve 232 in the inflation direction. This arrangement prevents the high-pressure solenoid valves in the closed state from being pushed open in the reverse direction, improving the operational reliability and service life of the high-pressure solenoid valves. In addition, a sixth pressure transmitter 66 is installed between the second high-pressure solenoid valve 232 and the pressure reducing valve 211 in the second pressure reducing branch. The sixth pressure transmitter 66 is used to monitor the pressure of the backup pressure reducing branch and feed it back to the intelligent measurement and control unit 4. After processing and analyzing the monitoring data, the intelligent measurement and control unit 4 can determine whether the pressure reducing valve on the second pressure reducing branch (backup branch) is working properly.

[0049] In one embodiment, the pressure transmitters installed on the pressure-reducing branches include at least: a second pressure transmitter 62 installed at the inlet end of the two pressure-reducing branches, a third pressure transmitter 63 installed at the outlet end, and a sixth pressure transmitter 66 installed on the second pressure-reducing branch. The second pressure transmitter 62 monitors the gas pressure entering each pressure-reducing branch and feeds it back to the intelligent control unit 4. The intelligent control unit 4 determines the gas source pressure based on the monitoring data. The third pressure transmitter 63 monitors the gas pressure after pressure reduction and feeds it back to the intelligent control unit 4. The intelligent control unit 4 determines the gas pressure after pressure reduction based on the monitoring data. The sixth pressure transmitter 66 monitors the gas pressure after pressure reduction in the second pressure-reducing branch. The intelligent control unit 4 can determine whether the pressure-reducing valves 211 on the two pressure-reducing branches are functioning correctly based on the monitoring data.

[0050] The pressure reducing valve in the above embodiment is a combined valve, consisting of a pressure reducing valve body and a control chamber. The pressure reducing valve body and the control chamber are separated by a sensitive element. The control chamber receives low-pressure gas through an electro-proportional valve, which amplifies the gas supply pressure approximately proportionally through a diaphragm, thereby achieving remote pressure regulation. The electro-proportional valve controls its output pressure with an input current of 4 to 20 mA. The input current and output pressure are approximately linearly proportional, and the output pressure of the pressure reducing valve body can be stably controlled according to a preset proportional relationship.

[0051] See also Figure 1 , Figure 2 and Figure 3In one embodiment, the outlets of each pressure-reducing branch are combined into a second main line L2 and then connected to each gas distribution branch. The gas distribution branch includes at least a first gas distribution branch and a second gas distribution branch, each with an independent gas collecting pipe 32. The following description uses the first gas distribution branch as an example. The first gas distribution branch includes at least a first gas collecting pipe 321, a gas distribution solenoid valve 33, and a fourth pressure transmitter 64, all communicatively connected to the intelligent control unit 4. The inlet of the first gas collecting pipe 321 is connected to the second main line L2, and its outlet is connected to the corresponding on-board gas cylinder via the gas distribution solenoid valve 33. The first gas collecting pipe 321 stores the pressure-regulated gas and supplies it to the on-board gas cylinder through the connected first gas distribution branch. The fourth pressure transmitter 64 is positioned between the gas distribution solenoid valve and the on-board gas cylinder to monitor the gas pressure within the first gas distribution branch. The intelligent control unit 4 collects the monitoring data from the fourth pressure transmitter 64 and determines whether the gas distribution solenoid valve 33 on the corresponding gas distribution branch is open or closed based on changes in the monitored pressure values. To isolate the ground pipeline system from foreign matter and prevent it from entering the rocket cylinder system, a second filter 36 can be installed at the end of each gas distribution branch (the end connected to the rocket cylinder).

[0052] Next, we will continue to use the first valve distribution branch as an example for explanation: In the above embodiment, the gas distribution solenoid valve 33 on the first gas distribution branch includes a first solenoid valve 331, a second solenoid valve 332, and a third solenoid valve 333. The first solenoid valve 331 and the second solenoid valve 332 are connected in parallel and then in series between the first gas collecting pipe 321 and the third solenoid valve 333. The other end of the third solenoid valve 333 is connected to the corresponding on-rocket gas cylinder through the second filter 36. A fourth pressure transmitter 64 is located on the outlet side of the third solenoid valve 333, that is, between the third solenoid valve 333 and the second filter 36. This location allows for simultaneous monitoring of the on-rocket gas cylinder's filling and releasing pressures. Additionally, a second releasing solenoid valve is externally connected between the third solenoid valve 333 and the second filter 36 to facilitate releasing gas from the on-rocket gas cylinder.

[0053] In this embodiment, two normally closed solenoid valves (first solenoid valve 331 and second solenoid valve 332) are connected in parallel, and a normally open solenoid valve (third solenoid valve 333) is connected in series in the gas supply direction. The parallel connection of the first solenoid valve 331 and the second solenoid valve 332 provides redundancy in case they cannot be opened, and the two normally closed solenoid valves serve as backups for each other. The third solenoid valve 333, connected in series, provides redundancy in case it cannot be closed. If the first solenoid valve 331 and the second solenoid valve 332 cannot be closed, the third solenoid valve 333 can serve as a backup to shut off the gas supply. The technical solution of this embodiment effectively avoids the risk of single point of failure.

[0054] Furthermore, in order to facilitate overpressure venting of the charging and discharging system, both the first gas collecting pipe 321 and the second gas collecting pipe 322 are equipped with a first venting solenoid valve 311.

[0055] It is important to note that the following explanation will use the second valve branch as an example: To reduce the equipment investment cost of the ground gas supply system, different pressure levels can be defined according to the different target pressures of the onboard gas cylinder system. Correspondingly, the ground gas distribution unit is also divided into corresponding pressure levels. For example, the first gas distribution branch is a high-pressure gas distribution branch, and the second gas distribution branch is a low-pressure gas distribution branch. A normally open solenoid valve 34 is installed between the first gas collecting pipe 321 and the second gas collecting pipe 322 of different pressure levels for isolation. A safety valve 35 is installed between the normally open solenoid valve 34 and the second gas collecting pipe 322.

[0056] In other words, the second gas collection pipe 322 is equipped with a first venting solenoid valve 311, a safety valve 35, and a fifth pressure transmitter 65, all of which are communicatively connected to the intelligent monitoring and control unit 4. The fifth pressure transmitter 65 monitors the pressure of the second gas collection pipe 322 in real time. If the pressure exceeds the set pressure, the safety diagnostic program of the intelligent monitoring and control unit 4 triggers the first venting solenoid valve 311 of the second gas collection pipe 322 to vent. When the safety diagnostic program fails to trigger the overpressure protection, the safety valve 35 will open to release pressure as a backup measure to ensure the system's overpressure safety.

[0057] In any of the above embodiments, the intelligent measurement and control unit includes at least: a human-machine interaction module, a data acquisition circuit module, a redundant PLC measurement and control assembly, a relay execution assembly, and an energy-saving resistor module. The human-machine interaction module is used to set the target filling pressure of the on-board gas cylinder, modify control parameters, and issue control commands, thereby realizing remote automatic control of the on-board gas cylinder system's filling and discharging. The data acquisition circuit module is used to collect monitoring data from each pressure transmitter and send it to the redundant PLC measurement and control assembly. The redundant PLC measurement and control assembly controls the relay execution assembly to drive the corresponding solenoid valve based on the monitoring data. The energy-saving resistor module is used to protect the solenoid valve's service life and prevent coil overheating caused by prolonged high-current power supply.

[0058] In this embodiment, the PLC control and measurement combination includes a redundant CPU, a redundant power supply system, and redundant I / O modules. The relay execution combination achieves the function of low-voltage control of high-voltage and signal isolation. It uses the low-voltage signals output by the PLC to control the combined relays, thereby driving the corresponding solenoid valves. Electromagnetic isolation prevents high-voltage circuits from interfering with the low-voltage control system, thus protecting sensitive electronic components. The data acquisition circuit module is responsible for acquiring signals from the sensor (pressure transmitter), processing the signals, and sending them to the PLC, thereby realizing a closed-loop pressure control for the gas cylinder filling status. The energy-saving resistor module protects the service life of the solenoid valves, preventing coil overheating due to prolonged high-current power supply. Additionally, it includes a host computer, a lower and upper computer, and a safety barrier signal conditioning module. The lower computer performs real-time data acquisition, control command execution, and local logic processing, while the host computer performs monitoring and control, data processing and analysis, human-machine interaction, and remote management. The safety barrier signal conditioning system uses electromagnetic isolation technology (optical coupler, transformer or capacitive coupling) to achieve electrical isolation between input, output and power supply. While blocking dangerous energy from entering the safe area, it effectively eliminates ground loop interference. At the same time, it accurately processes the raw signals output by sensors or field devices to ensure high-quality transmission to the control system.

[0059] Next, combine Figure 4 This further illustrates the process of simultaneously and automatically filling multiple gas cylinders on an arrow using the technical solution of the present invention.

[0060] The onboard gas cylinder system uses a filling pressure of 23 MPa as the dividing line, defining cylinders with pressures above 23 MPa as medium-high pressure cylinders and those with pressures below 23 MPa as medium-low pressure cylinders. It should be noted that cylinders of both pressure levels may contain cylinder groups of different volumes serving different functions, and the filling and discharging of different cylinder groups on the rocket must be controlled independently. Real-time cylinder pressure values ​​on the rocket are received, demodulated, and processed by the telemetry ground testing instrument before being sent back to the integrated ground server for storage. These data are then packaged and sent to the intelligent telemetry and control unit client to participate in the closed-loop control of cylinder filling and discharging.

[0061] When filling multiple on-board gas cylinders, the operator must first complete the relevant settings on the host computer interface before starting the program. Select the on-board gas cylinder system group to be filled, and set the target filling pressure value Pn_SD and filling rate (including unit time period Δt and pressure increase amplitude ΔP) for each cylinder. After completing the corresponding settings, click the combined start button to start the gas cylinder filling program. The intelligent monitoring and control unit will determine whether the minimum current pressure of the cylinder to be filled is higher than 23MPa based on the current cylinder pressure. If it is higher than this value, it will control the normally open solenoid valve 34 to close. Otherwise, the normally open solenoid valve 34 will be de-energized and remain open.

[0062] At the start of filling, the intelligent monitoring and control unit sets the initial set pressure Psd of the pressure reducing valve based on the minimum current pressure of each gas cylinder (min{Pn}), and this pressure must not be lower than the minimum set value of the pressure reducing valve. The pressure reducing valve's set value is automatically increased by pressure ΔP at regular intervals Δt until the pressure reducing valve's set value exceeds the maximum gas cylinder filling target pressure by 2MPa (i.e., Psd ≥ max{Pn_SD} + 2MPa), at which point pressure adjustment stops.

[0063] Simultaneously, when gas cylinders with different pressures are being filled at the same time, the intelligent monitoring and control unit will determine whether there is a situation where the gas cylinder pressure is lower than its respective target filling pressure Pn_SD based on the current gas cylinder pressure Pn. As long as one of them meets this condition, the ground filling valve (second solenoid valve 332) corresponding to that gas cylinder will be opened to pre-fill the ground filling pipeline. Furthermore, when the pressure in the ground filling pipeline approaches the gas cylinder pressure (generally taken as the previously set pressure adjustment amplitude ΔP), the intelligent monitoring and control unit will control the fourth solenoid valve 53 of the corresponding gas cylinder to open, in order to prevent the fourth solenoid valve 53 of the gas cylinder from being abnormally opened when the ground pressure exceeds the gas cylinder pressure.

[0064] After the gas cylinder filling solenoid valve (fourth solenoid valve 53) is opened, the intelligent measurement and control unit automatically switches to low-voltage energy-saving mode after a 3-second delay. This protects the fourth solenoid valve 53 from overheating due to prolonged power supply, thereby improving the reliability and service life of the solenoid valve on the rocket.

[0065] Simultaneously, the intelligent monitoring and control unit continuously assesses the relationship between the current cylinder pressure Pn and the target pressure Pn_SD. Once all cylinders on the same filling route on the ground reach the target pressure Pn_SD, the program remotely shuts off the low-voltage mode of the corresponding cylinder's filling solenoid valve (fourth solenoid valve 53), and then delays before shutting off the power supply to the fourth solenoid valve 53. Each time a cylinder reaches the full filling condition, the intelligent monitoring and control unit checks whether all cylinders are fully filled. The cylinder filling process ends once all cylinders have been filled.

[0066] Then combine Figure 5 The present invention further elaborates on the technical solution of solving the process of simultaneous automatic gas release from multiple gas cylinders on an arrow.

[0067] When simultaneously venting multiple on-rocket gas cylinders, the operator must first complete the relevant settings on the host computer interface before starting the program. Select the on-rocket gas cylinder system group to be vented, and set the target venting pressure value Pn_SD and venting rate (including the allowable pressure drop amplitude ΔP per unit time period Δt) for each cylinder. After completing the corresponding settings, click the combined start button to start the gas cylinder venting program. The intelligent monitoring and control unit will first determine whether the current pressure value Pn of the gas cylinder is greater than the set target venting pressure value Pn_SD. As long as one group meets the venting conditions, the intelligent monitoring and control unit will open the second venting solenoid valve 312 of the ground pipeline corresponding to the gas cylinder to be vented. Furthermore, the intelligent monitoring and control unit will determine whether multiple gas cylinders with the same ground venting path are venting simultaneously. If so, the intelligent monitoring and control unit will open the on-arrow venting solenoid valves (fourth solenoid valve 53 or fifth solenoid valve 54) one by one according to the current gas cylinder pressure Pn from low to high, and switch to energy-saving mode after a 3-second delay to avoid the on-arrow solenoid valves overheating due to prolonged power supply and to protect their service life. If not, the unit will directly open the on-arrow venting solenoid valves (fourth solenoid valve 53 or fifth solenoid valve 54) and then switch to energy-saving mode after a delay.

[0068] It should be noted that during the simultaneous release of gas from the cylinders on the rocket, before starting the release process, the cylinders to be released must be selected, and their respective release target values ​​and release rate requirements must be set. After the release program is started, the program will judge in real time whether each group of cylinders has been released to the target value. If the cylinder pressure has met the target value, the release will automatically end. The process controls the release rate according to the set release rate requirements.

[0069] Synchronously, during the gas cylinder venting process, the intelligent monitoring and control unit will determine in real time whether the current gas cylinder pressure Pn is less than or equal to the target pressure Pn_SD. If the judgment condition is met, it indicates that the gas cylinder pressure has reached the venting target pressure Pn_SD, and the program will close the corresponding venting solenoid valve on the rocket (fourth solenoid valve 53 or fifth solenoid valve 54). If there are gas cylinders venting through the same ground venting path, the intelligent monitoring and control unit will wait until all gas cylinders have completed venting before closing the corresponding ground venting solenoid valve. If there are no gas cylinders on the rocket sharing a ground venting path, the corresponding ground venting solenoid valve will be closed after a delay after the solenoid valve corresponding to the gas cylinder on the rocket is closed. In parallel, the intelligent monitoring and control unit will determine in real time the relationship between the current gas cylinder pressure Pn and the target pressure Pn_CS-ΔP×i for the current venting stage. If the gas cylinder pressure Pn has reached the target pressure value for stage i in the current stage i, it will continue to determine whether the venting duration of stage i satisfies the single stage duration Δt, that is, t(i+1)≥t(i)-Δt. If the conditions are met, it means that the venting rate meets the set requirements, and venting can continue to proceed to the next stage, i+1. If the conditions are not met, the intelligent control unit will close the corresponding ground venting solenoid valve and perform a time-added pause for this stage. The pause time is Δt - (t(i+1) + t(i)). The venting rate of the gas cylinder is controlled by the time-added pause.

[0070] Alternatively, a fixed dwell time can be set to simplify the logic. If the actual pressure drop in the current stage i is less than the set allowable pressure drop per unit time period, the venting process continues. It is important to note that if multiple gas cylinders on the same ground venting path are venting simultaneously, all cylinders must meet the corresponding venting rate. Otherwise, if any cylinder's venting rate is too fast, the intelligent control unit will automatically close the ground venting solenoid valve, pause for a certain period, and eliminate the impact of excessively fast venting in the current stage. Once the intelligent control unit determines that all cylinders have completed venting, the cylinder venting program terminates.

[0071] The onboard gas cylinder filling and discharging strategy described in this invention embodiment can simultaneously select multiple gas cylinders according to filling and discharging needs. It fully considers the condition of abnormal opening of the onboard solenoid valve, ensuring that the onboard gas cylinder pressure is always higher than the ground pipeline filling pressure when the onboard gas cylinder filling and discharging solenoid valve is not energized. The filling and discharging system of this invention automatically determines the opening timing of the onboard gas cylinder filling and discharging solenoid valve based on this principle, thereby protecting the service life and operational reliability of the onboard solenoid valve.

[0072] This invention automates the simultaneous filling and discharging process of multiple gas cylinders, requiring minimal human intervention, reducing the possibility of human error, improving testing efficiency, and thus shortening the testing cycle.

[0073] The above embodiments can be combined with each other and have corresponding technical effects.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A system adapted for simultaneous charging and discharging of multiple gas cylinders on a missile, for simultaneously charging and discharging a plurality of gas cylinders on a missile, characterized in that, At least comprising: A gas source bottle group for storing high-pressure gas to supply gas to downstream equipment; An intelligent pressure reduction redundancy unit, at least comprising a plurality of pressure reduction branches arranged in redundancy, each pressure reduction branch being provided with an independent pressure reduction valve; A redundant gas distribution unit, comprising a plurality of gas distribution branches, each gas distribution branch independently controlling the charging and discharging of the corresponding on-rocket gas cylinder; An intelligent measurement and control unit in communication connection with the intelligent pressure reduction redundancy unit and the redundant gas distribution unit; The gas source bottle group is respectively connected with a plurality of pressure reduction branches arranged in redundancy, the outlets of each pressure reduction branch are collected into one outlet and then connected with a plurality of gas distribution branches, and the outlet of each gas distribution branch is connected with a corresponding on-rocket gas cylinder; at least one pressure reduction branch and the gas distribution branch connected with the on-rocket gas cylinder to be charged are turned on by the intelligent measurement and control unit, and the gas source bottle group simultaneously charges a plurality of on-rocket gas cylinders through the turned-on pressure reduction branch and the gas distribution branch; During the charging process, the intelligent measurement and control unit controls the charging rate by adjusting the pressure of the pressure reduction valve on the corresponding pressure reduction branch within a unit time; Each gas distribution branch is externally connected with a discharging electromagnetic valve; the intelligent measurement and control unit controls each pressure reduction branch and the gas distribution branch to be closed, and controls the discharging electromagnetic valve to be opened, so as to realize the discharging of the on-rocket gas cylinder; During the discharging process, the intelligent measurement and control unit judges whether the discharging rate of the on-rocket gas cylinder meets the set requirement in real time; if not, the corresponding discharging electromagnetic valve is controlled to be closed for a period of time for stay compensation by the intelligent measurement and control unit, so as to control the discharging rate of the gas cylinder.

2. The system of claim 1, wherein, The gas source bottle group comprises at least a plurality of high-pressure gas cylinders, and each high-pressure gas cylinder is provided with an independently controlled first stop valve at the outlet branch; the branches are collected into a first total line through a high-pressure pipeline, and then connected with a plurality of gas distribution branches through a second stop valve; A first pressure transmitter in communication connection with the intelligent measurement and control unit is arranged on the first total line, for monitoring the gas supply pressure of the gas source bottle group in real time, and alarming and prompting by the intelligent measurement and control unit when the pressure is insufficient.

3. The system of claim 2, wherein, A plurality of pressure transmitters and a plurality of control valves are arranged on the pressure reduction branch and the gas distribution branch, and the intelligent measurement and control unit is in communication connection with the pressure transmitters and at least part of the control valves; The pressure transmitters are used for monitoring the pressure data at the location, the intelligent measurement and control unit acquires the pressure data of the pressure transmitters to obtain the pressure condition of the monitoring location, and drives the corresponding control valves to adaptively act according to the pressure condition.

4. The system of claim 3, wherein, The control valves arranged on the pressure reduction branch at least comprise a manual stop valve, a pressure reduction valve, a high-voltage electromagnetic valve and a one-way valve arranged in series between the second stop valve and the redundant gas distribution unit; the pressure reduction valve and the high-voltage electromagnetic valve are respectively in communication connection with the intelligent measurement and control unit; When charging the on-rocket gas cylinder system, manually open all the manual stop valves on the pressure reduction branches, and control the pressure reduction valve and the high-voltage electromagnetic valve on one of the pressure reduction branches to be opened by the intelligent measurement and control unit.

5. The system of claim 4, wherein, The pressure transmitter arranged on the pressure reducing branch comprises at least a second pressure transmitter arranged at the inlet end of the pressure reducing branch and a third pressure transmitter arranged at the outlet end; The second pressure transmitter is used for monitoring the pressure of the gas entering the pressure reducing branch and feeding back to the intelligent measurement and control unit; The third pressure transmitter is used for monitoring the pressure of the gas after pressure reduction and feeding back to the intelligent measurement and control unit.

6. The system of claim 5, wherein, The outlets of the pressure reducing branches are connected to a second total line respectively; The gas distribution branch comprises at least a gas collecting pipe, a gas distribution electromagnetic valve and a fourth pressure transmitter in communication connection with the intelligent measurement and control unit; the inlet of the gas collecting pipe is connected to the second total line, and the outlet is connected to the corresponding on-board gas cylinder through the gas distribution electromagnetic valve; the fourth pressure transmitter is arranged between the gas distribution electromagnetic valve and the on-board gas cylinder and is used for monitoring the pressure of the gas in the gas distribution branch; the intelligent measurement and control unit collects the monitoring data of the fourth pressure transmitter and judges whether the gas distribution electromagnetic valve in the corresponding gas distribution branch is opened or closed according to the change of the monitored pressure value.

7. The system of claim 6, wherein, The gas distribution electromagnetic valve comprises a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve; the first electromagnetic valve and the second electromagnetic valve are connected in parallel and then connected in series between the gas collecting pipe and the third electromagnetic valve; the other end of the third electromagnetic valve is connected to the corresponding on-board gas cylinder; and the fourth pressure transmitter is arranged on the outlet side of the third electromagnetic valve.

8. The system of claim 7, wherein, The gas collecting pipe is provided with a fifth pressure transmitter and a first gas discharge electromagnetic valve in communication connection with the intelligent measurement and control unit; The fifth pressure transmitter is used for monitoring the pressure of the gas collecting pipe; if the monitoring result exceeds the set value, the first gas discharge electromagnetic valve is controlled to be opened for discharging gas through the intelligent measurement and control unit.

9. The system of claim 8, wherein, The gas cylinder system comprises at least a medium-high pressure gas cylinder and a medium-low pressure gas cylinder; and the redundant gas distribution unit comprises at least a medium-high pressure gas distribution branch for distributing gas to the medium-high pressure gas cylinder and a medium-low pressure gas distribution branch for distributing gas to the medium-low pressure gas cylinder; The medium-high pressure gas distribution branch is connected to the medium-high pressure gas cylinder through a fourth electromagnetic valve, and the medium-low pressure gas distribution branch is connected to the medium-low pressure gas cylinder through a fifth electromagnetic valve.

10. The system adapted for simultaneous charging and dispensing of multiple gas cylinders on board the vehicle as claimed in any of the claims 1 to 9, wherein, The intelligent measurement and control unit comprises at least a human-computer interaction module, a collection circuit module, a redundant PLC measurement and control combination, a relay execution combination and an energy-saving resistor module; The human-computer interaction module is used for setting the target pressure of the on-board gas cylinder, modifying the control parameters and issuing the control commands, so as to realize remote automatic control of the on-board gas cylinder system; The collection circuit module is used for collecting the monitoring data of the pressure transmitters and sending the monitoring data to the redundant PLC measurement and control combination; the redundant PLC measurement and control combination controls the relay execution combination to drive the corresponding electromagnetic valve to act according to the monitoring data; and the energy-saving resistor module is used for protecting the working life of the electromagnetic valve and avoiding the coil from heating due to long-time large-current power supply.

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