CN113915527A - Be adapted to unmanned on duty's gas cylinder system of inflating and deflating - Google Patents
Be adapted to unmanned on duty's gas cylinder system of inflating and deflating Download PDFInfo
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- CN113915527A CN113915527A CN202111006900.3A CN202111006900A CN113915527A CN 113915527 A CN113915527 A CN 113915527A CN 202111006900 A CN202111006900 A CN 202111006900A CN 113915527 A CN113915527 A CN 113915527A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0186—Applications for fluid transport or storage in the air or in space
- F17C2270/0197—Rockets
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
A gas cylinder inflation and deflation subsystem suitable for unattended operation comprises a power measurement and control subsystem, a ground gas supply and distribution subsystem and an air cylinder inflation and deflation subsystem on an arrow. The power measurement and control subsystem sends a control instruction, the PLC measurement and control combination and the relay execution combination realize the remote closed-loop control of the electric control pressure reducer, the electromagnetic valve and the electromagnetic valve on the rocket for the gas distribution subsystem on the ground, the opening and closing of the electromagnetic valve and the outlet pressure of the electric control pressure reducer are controlled, the controllable and adjustable gas filling rate of the gas cylinder and the automatic gas filling and discharging function of the gas cylinder are realized, the unattended gas filling and discharging of the gas cylinder are realized, and the safety of rocket launcher personnel is improved. A filter and two step-by-step direct-acting electromagnetic valves are arranged on a common pipeline of a rocket-mounted gas cylinder inflation and deflation subsystem, and a step-by-step direct-acting electromagnetic valve is arranged on a gas cylinder branch pipeline with higher pressure in the rocket flight process, so that one set of gas supply system can simultaneously inflate and deflate two gas cylinders, single-point faults that the system cannot be closed are eliminated, and the sealing reliability is greatly improved.
Description
Technical Field
The invention relates to an unattended gas cylinder charging and discharging subsystem which is used for charging and discharging gas of a liquid rocket supercharged gas cylinder, a launch control blow-off gas cylinder and the like.
Background
The liquid rocket generally adopts a high-pressure gas cylinder to supply gas to realize the functions of pressure supplement of a storage tank, engine control, blowing and the like. The gas cylinder charging and discharging subsystem generally comprises a ground gas supply and distribution system and an air cylinder system on an arrow. The ground gas supply and distribution system mainly comprises a gas distribution table and a ground gas charging pipeline, the rocket gas cylinder system comprises a gas cylinder, a manual switch, a gas charging and unloading switch, a gas charging and discharging pipeline and the like, the main function is to meet the requirements of gas charging, gas discharging, gas supplementing and the like of the gas cylinder, and the schematic diagram is shown in figure 1. In the figure 1, 1 ' and 2 ' are gas cylinders, 3 ' and 4 ' are gas charging and unloading switches, 5 ' and 6 ' are manual switches, 7 ' is a ground gas source, 8 ' is a gas distribution table stop valve, and 9 ' is a gas distribution table vent valve.
After the low-temperature rocket enters the flow before the injection, the gas distribution hand switch, the pressure reducer, the manual switch on the rocket, the inflation unloading switch and the like still need to act and need to be operated by personnel, the flow before the injection cannot realize unattended operation, and the safety of the personnel after the low-temperature propellant is injected cannot be ensured. The gas cylinder fills gassing and has the inflation rate requirement, and the inflation rate relies on operating personnel manual regulation pressure reducer, and control inflation pressure realizes, and control accuracy is low, and is high to personnel's operation requirement. In the launching preparation stage, the gas cylinder charging and discharging subsystem has a single-point fault mode that a charging unloading switch is not turned on/off. The gas in the gas cylinder leaks a large amount due to the fact that the gas charging unloading switch is not closed or the leakage rate is over-poor, and the launching task is delayed or failed. The leakage rate of the air charging unloading switch is over-poor after many times in history.
Disclosure of Invention
The technical problem solved by the invention is as follows: the system overcomes the defects of the prior art, provides the gas cylinder charging and discharging subsystem suitable for unattended operation, realizes automatic charging and discharging of the gas cylinder, has adjustable and controllable charging rate, provides technical support for unattended operation of rocket launching process, improves the personnel safety and testing and launching efficiency of low-temperature rocket launching, and can eliminate the single-point fault mode of no-closing/leakage rate over-difference.
The technical scheme of the invention is as follows:
a gas cylinder charging and discharging subsystem suitable for unattended operation comprises a power measurement and control subsystem, a ground gas supply and distribution subsystem and an air cylinder charging and discharging subsystem on an arrow;
the ground gas supply and distribution subsystem comprises a ground high-pressure gas source, a ground electromagnetic valve, an electric control pressure reducer, a pressure sensor behind the valve, a first deflation electromagnetic valve, a ground control gas source and a deflation flow limiting element; the rocket gas cylinder charging and discharging subsystem comprises a filter, a first rocket solenoid valve, a second rocket solenoid valve, a third rocket solenoid valve, a first isolation valve, a second isolation valve, a first gas cylinder, a second gas cylinder, a first pressure sensor and a second pressure sensor;
the ground high-pressure gas source is connected with the air charging and discharging subsystem of the air bottle on the rocket through a ground air charging pipeline, and a ground electromagnetic valve, an electric control pressure reducer, a post-valve pressure sensor and a first air discharging electromagnetic valve are sequentially arranged on the ground air charging pipeline along the air charging direction; the air bleeding flow limiting element is arranged at the outlet of the first air bleeding electromagnetic valve;
the rocket gas cylinder charging and discharging subsystem comprises a common pipeline, a first gas cylinder pipeline and a second gas cylinder pipeline, wherein one end of the common pipeline is connected with a ground gas charging pipeline, and the other end of the common pipeline is connected with a first isolation valve through the first gas cylinder pipeline on one hand and a second isolation valve through the second gas cylinder pipeline on the other hand; a filter, a first arrow electromagnetic valve and a second arrow electromagnetic valve are sequentially arranged on the common pipeline along the inflation direction; a third solenoid valve on the arrow and the first gas cylinder are sequentially arranged on the first gas cylinder pipeline along the inflation direction, and a second gas cylinder is arranged on the second gas cylinder pipeline; a first pressure sensor is arranged at the inlet of the first gas cylinder, and a second pressure sensor is arranged at the inlet of the second gas cylinder;
the power measurement and control subsystem comprises a measurement and control workstation, a master control network switch, a PLC measurement and control combination and a relay execution combination; the measurement and control workstation is loaded with a gas cylinder inflation program and a gas cylinder deflation program, and when the gas cylinder inflation program or the gas cylinder deflation program is executed, control instructions for each electromagnetic valve in the ground gas supply and distribution subsystem and the rocket gas cylinder inflation and deflation subsystem are generated and sent to the PLC measurement and control combination through the master control network switch; the PLC measurement and control combination control relay performs combination work, controls the opening and closing of the corresponding electromagnetic valve and realizes the inflation or deflation of the gas cylinder.
The electric control pressure reducer is a combined valve and consists of a pressure reducing valve main body and a control cavity, the pressure reducing valve main body and the control cavity are separated by a sensitive element diaphragm, the control cavity consists of an inflation electromagnetic valve and a second deflation electromagnetic valve, air is supplied through the inflation electromagnetic valve and exhausted through the second deflation electromagnetic valve, the pressure of the control cavity is dynamically adjusted, and the outlet pressure is adjusted;
the pressure reducing valve is located on the ground inflation pipeline, an inlet of the pressure reducing valve is connected with the ground electromagnetic valve through the ground inflation pipeline, and the control cavity inflation electromagnetic valve is connected with the ground control air source through the control pipeline.
The pressure reducing valve is in a normally closed state.
The power measurement and control subsystem also comprises a signal conditioning combination, the measurement and control workstation is preset with the required values of the gas cylinder inflation pressure and the inflation rate, when a gas cylinder inflation program is executed, the signal conditioning combination supplies power to sensors of the gas distribution subsystem and the gas cylinder inflation and deflation subsystem on the rocket for the ground, the readings of the first pressure sensor and the second pressure sensor are collected in real time, analog quantity signals are converted into PLC standard input signals and then fed back to the measurement and control workstation through the PLC measurement and control combination and the general control network switch, subsequent actions are realized after calculation of the measurement and control workstation, and meanwhile, the real-time display of the pressure is realized;
the measurement and control workstation calculates the current inflation rate according to the pressure feedback data at each moment, compares the current inflation rate with a preset inflation rate required value, and sends a second deflation electromagnetic valve opening instruction to the PLC measurement and control combination through the master control network switch if the current inflation rate is higher than the preset inflation rate required value; after the PLC measurement and control combination receives a second deflation electromagnetic valve opening instruction, the relay is controlled to execute combined work, the second deflation electromagnetic valve is opened, the pressure of the control cavity is reduced, the opening of a valve port of the pressure reducing valve is reduced, the outlet pressure of the pressure reducing valve is further reduced, and the down regulation of the inflation rate of the first gas cylinder and the second gas cylinder is realized;
if the current inflation rate is lower than a preset inflation rate required value, an inflation solenoid valve opening instruction and a second deflation solenoid valve closing instruction are sent to the PLC measurement and control combination through a master control network switch; after the PLC measurement and control combination receives an inflation electromagnetic valve opening instruction and a second deflation electromagnetic valve closing instruction, the relay is controlled to perform combined work, the inflation electromagnetic valve is opened, the second deflation electromagnetic valve is closed, the pressure of the control cavity is increased, the opening degree of a valve port of the pressure reducing valve is increased, the outlet pressure of the pressure reducing valve is further increased, and the inflation rate of the first gas cylinder and the inflation rate of the second gas cylinder are increased;
when feedback data received by the measurement and control workstation is equal to a preset gas cylinder inflation pressure requirement value, a ground electromagnetic valve, a first arrow electromagnetic valve, a second arrow electromagnetic valve and a third arrow electromagnetic valve closing instruction are sent to the PLC measurement and control combination through the general control network switch, the PLC measurement and control combination controls the relay to perform combination work after receiving the instruction, the ground electromagnetic valve, the first arrow electromagnetic valve, the second arrow electromagnetic valve and the third arrow electromagnetic valve are closed, and gas cylinder inflation is stopped; and then the measurement and control workstation sends a first deflation electromagnetic valve and a second deflation electromagnetic valve opening instruction to the PLC measurement and control combination through the master control network switch, the PLC measurement and control combination receives the instruction and then controls the relay to execute the combination work, and the first deflation electromagnetic valve and the second deflation electromagnetic valve are opened to discharge the gas in the ground inflation pipeline and the pressure reducing valve control cavity.
The first isolation valve and the second isolation valve are both connected with a downstream system.
The electromagnetic valve on the first arrow, the electromagnetic valve on the second arrow and the electromagnetic valve on the third arrow are all step-by-step direct-acting electromagnetic valves.
The pressure intensity of the gas provided by the ground high-pressure gas source is 23-35MPa, and the pressure intensity of the gas provided by the ground control gas source is 5 MPa.
The gas charging process of the gas cylinder gas charging and discharging subsystem is as follows:
the measurement and control workstation starts a gas cylinder inflation program, sets the gas cylinder inflation pressure and inflation rate, sends opening instructions of a ground solenoid valve, a first arrow solenoid valve, a second arrow solenoid valve and a third arrow solenoid valve to the PLC measurement and control combination through the general control network switch, the PLC measurement and control combination controls a relay to perform combination work after receiving the opening instructions of the ground solenoid valve, opens the ground solenoid valve, a pressure reducing valve inflation solenoid valve, the first arrow solenoid valve, the second arrow solenoid valve and the third arrow solenoid valve, provides high-pressure gas from a ground high-pressure gas source, and enters a rocket gas cylinder inflation and deflation subsystem through an electric control pressure reducer and a ground inflation pipeline;
the gas entering the air charging and discharging subsystem of the rocket gas cylinder enters the second gas cylinder through the rocket filter, the first rocket solenoid valve and the second rocket solenoid valve; the gas enters the first gas cylinder through the rocket filter, the first rocket solenoid valve, the second rocket solenoid valve and the third rocket solenoid valve;
the signal conditioning combination in the power measurement and control subsystem acquires readings of the first pressure sensor and the second pressure sensor in real time, converts the readings into digital signals and feeds the digital signals back to the measurement and control workstation through the PLC measurement and control combination and the master control network switch;
the measurement and control workstation calculates the current inflation rate according to the feedback data at each moment, compares the current inflation rate with a preset inflation rate required value, and sends a second deflation electromagnetic valve opening instruction to the PLC measurement and control combination through the master control network switch if the current inflation rate is higher than the preset inflation rate required value; after the PLC measurement and control combination receives a second deflation electromagnetic valve opening instruction, the relay is controlled to execute combined work, the second deflation electromagnetic valve is opened, the pressure of the control cavity is reduced, the opening of a valve port of the pressure reducing valve is reduced, the outlet pressure of the pressure reducing valve is further reduced, and the down regulation of the inflation rate of the first gas cylinder and the second gas cylinder is realized;
if the current inflation rate is lower than a preset inflation rate required value, an inflation solenoid valve opening instruction and a second deflation solenoid valve closing instruction are sent to the PLC measurement and control combination through a master control network switch; after the PLC measurement and control combination receives an inflation electromagnetic valve opening instruction and a second deflation electromagnetic valve closing instruction, the relay is controlled to perform combined work, the inflation electromagnetic valve is opened, the second deflation electromagnetic valve is closed, the pressure of the control cavity is increased, the opening degree of a valve port of the pressure reducing valve is increased, the outlet pressure of the pressure reducing valve is further increased, and the inflation rate of the first gas cylinder and the inflation rate of the second gas cylinder are increased;
when feedback data received by the measurement and control workstation is equal to a preset gas cylinder inflation pressure requirement value, a ground electromagnetic valve, a first arrow electromagnetic valve, a second arrow electromagnetic valve, a third arrow electromagnetic valve and an inflation electromagnetic valve closing instruction are sent to the PLC measurement and control combination through the general control network switch, the PLC measurement and control combination controls the relay to perform combination work after receiving the instruction, the ground electromagnetic valve, the first arrow electromagnetic valve, the second arrow electromagnetic valve, the third arrow electromagnetic valve and the inflation electromagnetic valve are closed, and gas cylinder inflation is stopped; and then the measurement and control workstation sends a first deflation electromagnetic valve and a second deflation electromagnetic valve opening instruction to the PLC measurement and control combination through the master control network switch, the PLC measurement and control combination receives the instruction and then controls the relay to execute the combination work, and the first deflation electromagnetic valve and the second deflation electromagnetic valve are opened to discharge the gas in the ground inflation pipeline and the pressure reducing valve control cavity.
The air discharging process of the air bottle air charging and discharging subsystem is as follows:
the measurement and control workstation starts a gas cylinder deflation program, the measurement and control workstation sends opening instructions of the first arrow solenoid valve, the second arrow solenoid valve, the third arrow solenoid valve and the first deflation solenoid valve to the PLC measurement and control combination through the general control network switch, the PLC measurement and control combination receives the instructions and then controls the relay to execute the combination work, the first arrow solenoid valve, the second arrow solenoid valve, the third arrow solenoid valve and the first deflation solenoid valve are opened, gas in the first gas cylinder enters a ground inflation pipeline through the first arrow solenoid valve, the second arrow solenoid valve, the third arrow solenoid valve and the filter, and then is exhausted through the first deflation solenoid valve and the current limiting element; and the gas in the second gas cylinder enters the ground inflation pipeline through the first arrow electromagnetic valve, the second arrow electromagnetic valve and the filter and is exhausted through the first deflation electromagnetic valve and the flow limiting element.
Compared with the prior art, the invention has the following beneficial effects:
1) in the traditional scheme, both the ground gas supply and distribution subsystem and the gas bottle inflation subsystem on the rocket are operated by personnel, and unattended operation before shooting cannot be realized. According to the invention, the ground gas supply and distribution subsystem and the rocket gas cylinder inflation and deflation subsystem are brought into the power measurement and control subsystem for unified management, the electric control valve is adopted to replace a gas distribution hand switch, a pressure reducer and a rocket inflation and unloading switch, the power measurement and control subsystem supplies power to the electromagnetic valve, programming and automation can be realized, the rocket operation of personnel in the process before shooting is cancelled, testers are simplified, and the safety of rocket launcher personnel is improved.
2) In the traditional scheme, the problems of valve seal leakage, guide clamping stagnation and the like caused by redundant materials introduced from the ground exist, and the filter is additionally arranged at the inlet of the arrow, so that the problem is solved;
3) in the traditional scheme, in the launching preparation stage, a single-point fault mode that an inflation unloading switch is not turned on/off exists in a gas cylinder inflation and deflation subsystem. The gas in the gas cylinder leaks a large amount due to the fact that the gas charging unloading switch is not closed or the leakage rate is over-poor, and the launching task is delayed or failed. The leakage rate of the air charging unloading switch is over-poor after many times in history. According to the invention, two step-by-step direct-acting electromagnetic valves are connected in series, so that the sealing redundancy is closed, and the single-point fault that the electromagnetic valves cannot be closed is eliminated; meanwhile, the electromagnetic valve is arranged on the branch at the side with higher pressure of the gas cylinder in the flying process, so that the gas supply of the two gas cylinders is isolated; the higher side of gas cylinder pressure will realize 3 seals, and sealing reliability promotes greatly.
4) Among the traditional scheme, gas cylinder inflation rate is by the manual regulation pressure reducer aperture of operating personnel, and visual judgement gas cylinder inflation rate need constantly manual regulation pressure reducer among the inflation process, and it is high to personnel's operation requirement, and rate control accuracy is low, and when gas cylinder pressure reached the required value, the manual switch of joining in marriage gas table hand of closing after visual judgement stops to aerify. According to the invention, an electric control pressure reducer is adopted for a gas distribution platform to replace a manual pressure reducer, a signal conditioning combination and a PLC (programmable logic controller) measurement and control combination in a power measurement and control subsystem are used for collecting the pressure of a gas cylinder pressure sensor and sending the pressure to a rear-end measurement and control workstation, the gas cylinder inflation rate is calculated and compared through a program, if the gas cylinder inflation rate is higher than a set rate, an electromagnetic valve closing instruction is sent to an inflation electromagnetic valve on the electric control pressure reducer, an electromagnetic valve opening instruction is sent to a deflation electromagnetic valve on the electric control pressure reducer, the pressure of a control cavity of the pressure reducer is reduced, the outlet pressure of the electric control pressure reducer is reduced, the down regulation of the gas cylinder inflation rate is realized, otherwise, the gas cylinder inflation rate is improved, and the full-automatic closed regulation of the gas cylinder inflation rate in a set rate range is realized; when the pressure of the gas cylinder reaches the set inflation pressure, the power measurement and control ground electromagnetic valve is closed, and gas supply is stopped. The two pressure sensors of the air cylinder inflation subsystem on the arrow can be used as redundancy backup, and the air cylinder inflation speed and pressure are prevented from being out of control due to the failure of the pressure sensors.
5) In the traditional scheme, when the high-pressure gas cylinder needs to be deflated, the front pressure and the rear pressure of the unloading switch are high, the operating torque for opening the unloading switch is high, the requirement is provided for the operating capability of personnel, and meanwhile, the high operating torque easily damages the valve thread and the ejector rod, so that the thread is seized or redundant materials are generated. Therefore, when the actual high-pressure gas cylinder is deflated, the ground pipeline is required to be inflated firstly, the pressure difference between the front and the rear of the unloading switch is ensured not to be more than 5MPa, and the operating force is reduced. The step-by-step direct-acting electromagnetic valve is only required to be powered on and opened, so that the operation of personnel is cancelled, and the test and use procedures are simplified.
6) According to the rocket-mounted gas cylinder inflation and deflation subsystem, the electromagnetic valve is adopted to replace an unloading switch, the traditional direct-acting electromagnetic valve is limited by power supply and weight on the rocket, the caliber is small, and the inflation requirement of the gas cylinder cannot be met, and the traditional pilot-operated electromagnetic valve cannot be opened under the condition of low pressure difference of an inlet and an outlet, so that the pressure requirement on a ground gas source is improved, and meanwhile, all gas in the gas cylinder cannot be discharged during deflation. The step-by-step direct-acting electromagnetic valve used in the invention has the advantages of large caliber and 0 opening pressure difference, can meet the requirement of inflation rate, and can exhaust gas in the gas cylinder when in deflation.
Drawings
FIG. 1 is a schematic diagram of a conventional gas cylinder inflation and deflation subsystem;
fig. 2 is a schematic diagram of the gas cylinder charging and discharging subsystem adapted to unattended operation according to the present invention.
Detailed Description
The invention is further elucidated with reference to the drawing.
As shown in FIG. 2, the gas cylinder charging and discharging subsystem applicable to unattended operation comprises a power measurement and control subsystem, a ground gas supply and distribution subsystem and an rocket gas cylinder charging and discharging subsystem. The power measurement and control subsystem comprises a measurement and control workstation 18, a master control network switch 19, a PLC measurement and control combination 20, a signal conditioning combination 22 and a relay execution combination 21; the ground gas supply and distribution subsystem comprises a ground high-pressure gas source 11, a ground electromagnetic valve 12, an electric control pressure reducer 13, a post-valve pressure sensor 14, a first deflation electromagnetic valve 15, a ground control gas source 16 and a deflation flow limiting element 17; the rocket-mounted gas cylinder charging and discharging subsystem comprises a filter 1, a first rocket-mounted electromagnetic valve 2, a second rocket-mounted electromagnetic valve 3, a third rocket-mounted electromagnetic valve 4, a first isolation valve 5, a second isolation valve 6, a first gas cylinder 7, a second gas cylinder 8, a first pressure sensor 9 and a second pressure sensor 10.
The ground high-pressure air source 11 is connected with the air charging and discharging subsystem of the air bottle on the rocket through an air charging pipeline, and a ground electromagnetic valve 12, an electric control pressure reducer 13 and an air discharging electromagnetic valve 15 are sequentially arranged on the air charging pipeline. A bleed restriction 17 is mounted behind the first bleed solenoid valve 15.
The power measurement and control subsystem consists of a rear-end measurement and control workstation, a front-end PLC measurement and control combination, a relay execution combination and a signal conditioning combination. The control command of the electromagnetic valve is sent to the PLC measurement and control combination, and the PLC measurement and control combination controls the relay to control the corresponding electromagnetic valve, so that the gas cylinder is charged and discharged. The signal conditioning combination supplies power to the sensors of the ground gas supply and distribution subsystem and the rocket gas bottle inflation and deflation subsystem, acquires readings of the first pressure sensor and the second pressure sensor in real time, converts analog signals into PLC standard input signals, feeds the PLC standard input signals back to the measurement and control workstation through the PLC measurement and control combination and the master control network switch, realizes subsequent actions after calculation of the measurement and control workstation, and simultaneously realizes real-time pressure display
The ground gas supply and distribution subsystem is composed of a ground high-pressure gas source 11, a ground control gas source 16, a ground electromagnetic valve 12, an electric control pressure reducer 13, a post-valve pressure sensor 14 and a first deflation electromagnetic valve 15. The ground high-pressure gas source 11 is used for gas cylinder inflation, the ground control gas source 16 is used for gas supply of the control cavity of the electronic control pressure reducer 13, the ground electromagnetic valve 12 is used for connection and disconnection of the high-pressure gas source, the electronic control pressure reducer 13 is used for adjusting gas cylinder inflation pressure, the pressure sensor 14 behind the valve is used for monitoring and feeding back gas cylinder inflation pressure, and the first deflation electromagnetic valve 15 is used for gas cylinder deflation.
The rocket gas cylinder charging and discharging subsystem comprises a common pipeline, a first gas cylinder pipeline and a second gas cylinder pipeline, wherein one end of the common pipeline is connected with the charging pipeline, and the other end of the common pipeline is connected with a first isolation valve 5 through the first gas cylinder pipeline on one hand and a second isolation valve 6 through the second gas cylinder pipeline on the other hand; a filter 1, a first arrow electromagnetic valve 2 and a second arrow electromagnetic valve 3 are sequentially arranged on the common pipeline along the inflation direction; and a third arrow-mounted electromagnetic valve 4 and a first gas bottle 7 are sequentially arranged on the first gas bottle pipeline along the inflation direction, and a second gas bottle 8 is sequentially arranged on the second gas bottle pipeline along the inflation direction.
A first pressure sensor 9 is arranged at the inlet of the first gas cylinder 7, and a second pressure sensor 10 is arranged at the inlet of the second gas cylinder 8. Both the first 5 and second 6 isolation valves are connected to the downstream system.
The first pressure sensor 9 and the second pressure sensor 10 send collected pressure data to the power measurement and control subsystem; and the power measurement and control subsystem controls the opening and closing of the ground electromagnetic valve 12, the electric control pressure reducer 13, the first arrow electromagnetic valve 2, the second arrow electromagnetic valve 3 and the third arrow electromagnetic valve 4 according to the pressure data.
The electrically controlled pressure reducer 13 includes an inflation solenoid valve 13-1, a second deflation solenoid valve 13-2, and a pressure reducing valve 13-3. The electric control pressure reducer 13 is a combined valve and consists of a pressure reducing valve main body 13-3 and a control cavity, the pressure reducing valve main body 13-3 is separated from the control cavity through a sensitive element diaphragm, the control cavity consists of an inflation electromagnetic valve 13-1 and a second deflation electromagnetic valve 13-2, air is supplied through the inflation electromagnetic valve 13-1 and exhausted through the second deflation electromagnetic valve 13-2, the pressure of the control cavity is dynamically adjusted, and the outlet pressure is adjusted. The pressure reducing valve 13-3 is positioned on a ground inflation pipeline, the inlet of the pressure reducing valve 13-3 is connected with a ground electromagnetic valve 12 through the ground inflation pipeline, and the control cavity inflation electromagnetic valve 13-1 is connected with a ground control air source 16 through a control pipeline. The pressure reducing valve 13-3 is normally closed.
The electromagnetic valve on the first arrow, the electromagnetic valve on the second arrow and the electromagnetic valve on the third arrow are all step-by-step direct-acting electromagnetic valves. The step-by-step direct-acting electromagnetic valve has the advantages of large caliber and 0 opening pressure difference, can meet the requirement of inflation rate, and can exhaust gas in the gas cylinder when in deflation.
The gas pressure provided by the ground high-pressure gas source 11 is 23-35 MPa; the ground control gas source 16 provides a gas pressure of 5 MPa.
The charging and discharging processes of the gas cylinder charging and discharging subsystem are as follows:
and (3) gas cylinder inflation process: the measurement and control workstation starts a gas cylinder inflation program, the measurement and control workstation sends opening instructions of a ground electromagnetic valve, a first arrow electromagnetic valve, a second arrow electromagnetic valve and a third arrow electromagnetic valve to the PLC measurement and control combination 20 through the general control network switch 19, the PLC measurement and control combination 20 controls the relay execution combination 21 to work after receiving the opening instructions of the ground electromagnetic valve, and the ground electromagnetic valve 12, the pressure reducing valve inflation electromagnetic valve 13-1, the first arrow electromagnetic valve 2, the second arrow electromagnetic valve 3 and the third arrow electromagnetic valve 4 are opened, high-pressure gas is provided by a ground high-pressure gas source 11 and enters a rocket gas cylinder inflation and deflation subsystem through the electric control pressure reducer 13 and a ground inflation pipeline;
the gas entering the rocket gas cylinder inflation and deflation subsystem enters a second gas cylinder 8 through a rocket filter 1, a first rocket solenoid valve 2 and a second rocket solenoid valve 3; enters a first air bottle 7 through an arrow filter 1, a first arrow electromagnetic valve 2, a second arrow electromagnetic valve 3 and a third arrow electromagnetic valve 4;
a signal conditioning combination 22 in the power measurement and control subsystem collects readings of the first pressure sensor 9 and the second pressure sensor 10 in real time, converts the readings into digital signals and feeds the digital signals back to a measurement and control workstation through a PLC measurement and control combination 20 and a master control network switch 19;
the measurement and control workstation calculates the current inflation rate according to the feedback data at each moment, compares the current inflation rate with a preset inflation rate required value, and sends a second deflation electromagnetic valve opening instruction to the PLC measurement and control combination 20 through the master control network switch 19 if the current inflation rate is higher than the preset inflation rate required value; after the PLC measurement and control combination 20 receives a second deflation electromagnetic valve opening instruction, the relay execution combination 21 is controlled to work, the second deflation electromagnetic valve 13-2 is opened, the pressure of the control cavity is reduced, the opening degree of a valve port of the pressure reducing valve 13-3 is reduced, the outlet pressure of the pressure reducing valve 13-3 is further reduced, and the down regulation of the inflation rate of the first gas cylinder 7 and the second gas cylinder 8 is realized;
if the current inflation rate is lower than the preset inflation rate required value, an inflation solenoid valve opening instruction and a second deflation solenoid valve closing instruction are sent to the PLC measurement and control combination 20 through the master control network switch 19; after the PLC measurement and control combination 20 receives an inflation electromagnetic valve opening instruction and a second deflation electromagnetic valve closing instruction, the relay execution combination 21 is controlled to work, the inflation electromagnetic valve 13-1 is opened, the second deflation electromagnetic valve 13-2 is closed, the pressure of the control cavity is increased, the opening degree of a valve port of the pressure reducing valve 13-3 is increased, the outlet pressure of the pressure reducing valve 13-3 is further increased, and the inflation rate of the first gas cylinder 7 and the second gas cylinder 8 is increased;
when feedback data received by the measurement and control workstation is equal to a preset gas cylinder inflation pressure requirement value, a ground electromagnetic valve, a first arrow electromagnetic valve, a second arrow electromagnetic valve, a third arrow electromagnetic valve and an inflation electromagnetic valve closing instruction are sent to the PLC measurement and control combination 20 through the general control network switch 19, the PLC measurement and control combination 20 receives the instruction and then controls the relay execution combination 21 to work, the ground electromagnetic valve, the first arrow electromagnetic valve, the second arrow electromagnetic valve, the third arrow electromagnetic valve and the inflation electromagnetic valve 13-1 are closed, and gas cylinder inflation is stopped; and then the measurement and control workstation sends a first deflation electromagnetic valve opening instruction to the PLC measurement and control combination 20 through the master control network switch 19, the PLC measurement and control combination 20 receives the instruction and then controls the relay to execute the combination 21 to work, and the first deflation electromagnetic valve 15 and the second deflation electromagnetic valve 13-2 are opened to discharge the gas of the ground inflation pipeline.
The air discharging process of the air bottle: the measurement and control workstation starts a gas cylinder deflation program, the measurement and control workstation sends opening instructions of a first arrow solenoid valve, a second arrow solenoid valve, a third arrow solenoid valve and a first deflation solenoid valve to a PLC measurement and control combination 20 through a general control network switch 19, the PLC measurement and control combination 20 receives the instructions and then controls a relay to execute the combination 21 to work, the first arrow solenoid valve 2, the second arrow solenoid valve 3, the third arrow solenoid valve 4 and the first deflation solenoid valve 15 are opened, gas in the first gas cylinder 7 enters a ground inflation pipeline through the first arrow solenoid valve 2, the second arrow solenoid valve 3, the third arrow solenoid valve 4 and the filter 1, and then is exhausted through the first deflation solenoid valve 15 and a current limiting element 17; the gas in the second gas bottle 8 enters the ground inflation pipeline through the first rocket-mounted electromagnetic valve 2, the second rocket-mounted electromagnetic valve 3 and the filter 1, and is exhausted through the first deflation electromagnetic valve 15 and the flow limiting element 17.
A main circuit (a common pipeline) of a gas cylinder charging and discharging subsystem is provided with a filter and two electromagnetic valves, and meanwhile, a branch circuit of a gas cylinder with higher pressure in the rocket flight process is provided with an electromagnetic valve (a third rocket-mounted electromagnetic valve 4). The schematic diagram is shown in fig. 2.
In the invention, the power measurement and control subsystem consists of a rear-end measurement and control workstation, a front-end PLC measurement and control combination, a relay execution combination and a signal conditioning combination. The control command of the electromagnetic valve is sent to the PLC measurement and control combination, and the PLC measurement and control combination controls the relay to control the corresponding electromagnetic valve, so that the gas cylinder is charged and discharged.
The ground gas supply and distribution subsystem consists of a ground high-pressure gas source, a ground control gas source, a ground electromagnetic valve, an electric control pressure reducer, a post-valve pressure sensor and a gas release electromagnetic valve. The ground high-pressure gas source is used for gas cylinder inflation, the ground control gas source is used for gas supply of the control cavity of the electric control pressure reducer, the ground electromagnetic valve is used for connection and disconnection of the high-pressure gas source, the electric control pressure reducer is used for adjusting gas cylinder inflation pressure, the pressure sensor behind the valve is used for monitoring and feeding back the gas cylinder inflation pressure, and the deflation electromagnetic valve is used for gas cylinder deflation.
Because the initial inflation pressure of the two gas cylinders on the rocket is the same, in order to simplify the rocket-mounted system, the two gas cylinders share one rocket-mounted inflation and deflation system. The rocket-mounted gas cylinder charging and discharging subsystem consists of a filter, a first rocket-mounted electromagnetic valve, a second rocket-mounted electromagnetic valve, a third rocket-mounted electromagnetic valve, a first isolation valve, a second isolation valve, a first gas cylinder, a second gas cylinder, a first pressure sensor and a second pressure sensor.
The direct-acting electromagnetic valve is adopted to replace an inflation unloading switch, the power measurement and control subsystem supplies power to the electromagnetic valve, the gas cylinder inflation and deflation subsystem is incorporated into the power measurement and control unified management, programming and automation can be realized, the operation on a rocket by personnel in the process before shooting is cancelled, testing personnel are simplified, and the safety of rocket launching personnel is improved.
In the existing scheme, a single-point fault that an inflation unloading switch cannot be closed can cause a large amount of gas in a gas cylinder to leak. Compared with a single air-charging unloading switch, the direct-acting electromagnetic valve has higher air tightness reliability. Two electromagnetic valves on the main path are connected in series, so that the closing sealing redundancy is realized, and the single-point fault which cannot be closed is eliminated. Meanwhile, the electromagnetic valve is arranged on the branch at the side with higher pressure of the gas cylinder in the flying process, so that the gas supply of the two gas cylinders is isolated. The higher side of gas cylinder pressure realizes 3 sealings through 3 solenoid valves series connection, and sealing reliability promotes greatly.
Because the initial inflation pressure of the two gas cylinders on the rocket is the same, the two gas cylinders share one set of inflation and deflation system for simplifying the rocket system. Meanwhile, in order to realize the independence of the air supply of the two air cylinders, an isolation electromagnetic valve is arranged between the two air cylinders.
The filter is additionally arranged at the main path inlet of the inflation and deflation subsystem, so that the problems of valve seal leakage, guide clamping stagnation and the like caused by redundant ground materials are solved.
When the high-pressure gas cylinder needs to be deflated, the requirement on the operating capacity of personnel is provided because the front pressure and the rear pressure of the inflation unloading switch are higher, and the operating torque for opening the inflation unloading switch is larger, and meanwhile, the threads of the valve and the ejector rod are easily damaged by the large operating torque, so that the threads are seized or redundant materials are generated. Therefore, when the actual high-pressure gas cylinder is deflated, the ground pipeline is required to be inflated firstly, the pressure difference before and after the inflation unloading switch is ensured not to be more than 5MPa, and the operating force is reduced. The direct-acting electromagnetic valve is only required to be powered on and opened, so that the operation of personnel is cancelled, and the test and use procedures are simplified.
The gas cylinder charging and discharging subsystem provided by the invention can realize a remote automatic measurement and control function, can complete charging and discharging operation of the rocket gas cylinder system at a remote end, is used for bringing the gas cylinder subsystem and the rocket gas cylinder system into power measurement and control unified management on the ground, and the electric control valve replaces manual operation valves such as a charging and discharging switch and a manual pressure reducer, so that gas cylinder charging and discharging programming and automation are realized, the requirement on personnel is reduced, the testing personnel are simplified, unattended operation of a pre-shooting flow is realized, and the safety of the personnel is improved. Meanwhile, the power measurement and control subsystem is used for adjusting the outlet pressure of the electric control pressure reducer in a closed loop mode by collecting the pressure of the gas cylinder pressure sensor on the rocket, so that the gas cylinder inflation rate is controlled. One set of air supply system can simultaneously charge and discharge air for the two air cylinders on the arrow, and can simultaneously realize the independence of air supply of the two air cylinders. Single-point faults which cannot be closed by the system are eliminated, and the sealing reliability is greatly improved.
Those skilled in the art will appreciate that the invention may be practiced without these specific details.
Claims (9)
1. The utility model provides a be adapted to unmanned on duty's gas cylinder and fill gassing subsystem which characterized in that: the system comprises a power measurement and control subsystem, a ground gas supply and distribution subsystem and an air inflation and deflation subsystem of an air bottle on the rocket;
the ground gas supply and distribution subsystem comprises a ground high-pressure gas source (11), a ground electromagnetic valve (12), an electric control pressure reducer (13), a post-valve pressure sensor (14), a first deflation electromagnetic valve (15), a ground control gas source (16) and a deflation flow limiting element (17); the rocket-mounted gas cylinder charging and discharging subsystem comprises a filter (1), a first rocket-mounted electromagnetic valve (2), a second rocket-mounted electromagnetic valve (3), a third rocket-mounted electromagnetic valve (4), a first isolation valve (5), a second isolation valve (6), a first gas cylinder (7), a second gas cylinder (8), a first pressure sensor (9) and a second pressure sensor (10);
the ground high-pressure gas source (11) is connected with the air charging and discharging subsystem of the air bottle on the rocket through a ground air charging pipeline, and a ground electromagnetic valve (12), an electric control pressure reducer (13), a post-valve pressure sensor (14) and a first air discharging electromagnetic valve (15) are sequentially arranged on the ground air charging pipeline along the air charging direction; the air bleeding flow limiting element (17) is arranged at the outlet of the first air bleeding electromagnetic valve (15);
the rocket-mounted gas cylinder charging and discharging subsystem comprises a common pipeline, a first gas cylinder pipeline and a second gas cylinder pipeline, wherein one end of the common pipeline is connected with a ground gas charging pipeline, and the other end of the common pipeline is connected with a first isolation valve (5) through the first gas cylinder pipeline on one hand and a second isolation valve (6) through the second gas cylinder pipeline on the other hand; a filter (1), a first arrow electromagnetic valve (2) and a second arrow electromagnetic valve (3) are sequentially arranged on the common pipeline along the inflation direction; a third solenoid valve (4) and a first gas cylinder (7) are sequentially arranged on the first gas cylinder pipeline along the inflation direction, and a second gas cylinder (8) is arranged on the second gas cylinder pipeline; a first pressure sensor (9) is arranged at the inlet of the first gas cylinder (7), and a second pressure sensor (10) is arranged at the inlet of the second gas cylinder (8);
the power measurement and control subsystem comprises a measurement and control workstation (18), a master control network switch (19), a PLC measurement and control combination (20) and a relay execution combination (21); a gas cylinder inflation program and a gas cylinder deflation program are loaded on the measurement and control workstation (18), and when the gas cylinder inflation program or the gas cylinder deflation program is executed, control instructions for each electromagnetic valve in the ground gas supply and distribution subsystem and the rocket gas cylinder inflation and deflation subsystem are generated and sent to the PLC measurement and control combination (20) through the master control network switch (19); the PLC measurement and control combination (20) controls the relay to execute the work of the combination (21), controls the opening and closing of the corresponding electromagnetic valve and realizes the inflation or deflation of the gas cylinder.
2. The gas cylinder charging and discharging subsystem suitable for unattended operation according to claim 1, characterized in that: the electric control pressure reducer (13) is a combined valve and consists of a pressure reducing valve main body (13-3) and a control cavity, the pressure reducing valve main body (13-3) and the control cavity are separated by a sensitive element diaphragm, the control cavity consists of an inflation electromagnetic valve (13-1) and a second deflation electromagnetic valve (13-2), air is fed through the inflation electromagnetic valve (13-1) and exhausted through the second deflation electromagnetic valve (13-2), the pressure of the control cavity is dynamically adjusted, and outlet pressure adjustment is realized;
the pressure reducing valve (13-3) is positioned on a ground inflation pipeline, an inlet of the pressure reducing valve (13-3) is connected with a ground electromagnetic valve (12) through the ground inflation pipeline, and the control cavity inflation electromagnetic valve (13-1) is connected with a ground control air source (16) through a control pipeline.
3. The gas cylinder charging and discharging subsystem suitable for unattended operation according to claim 2, characterized in that: the pressure reducing valve (13-3) is in a normally closed state.
4. The gas cylinder charging and discharging subsystem suitable for unattended operation according to claim 3, characterized in that: the power measurement and control subsystem also comprises a signal conditioning combination (22), the measurement and control workstation (18) is preset with the requirement values of the gas cylinder inflation pressure and the inflation rate, when a gas cylinder inflation program is executed, the signal conditioning combination (22) supplies power to the gas distribution subsystem and the rocket gas cylinder inflation and deflation subsystem sensors on the ground, the readings of the first pressure sensor (9) and the second pressure sensor (10) are collected in real time, an analog quantity signal is converted into a PLC standard input signal and then fed back to the measurement and control workstation through the PLC measurement and control combination (20) and the master control network switch (19), the subsequent action is realized after calculation of the measurement and control workstation, and meanwhile, the real-time display of the pressure is realized;
the measurement and control workstation calculates the current inflation rate according to the pressure feedback data at each moment, compares the current inflation rate with a preset inflation rate required value, and sends a second deflation electromagnetic valve opening instruction to the PLC measurement and control combination (20) through the master control network switch (19) if the current inflation rate is higher than the preset inflation rate required value; after the PLC measurement and control combination (20) receives a second deflation electromagnetic valve opening instruction, the relay is controlled to execute the combination (21) to work, the second deflation electromagnetic valve (13-2) is opened, the pressure of the control cavity is reduced, the opening degree of a valve port of the pressure reducing valve (13-3) is reduced, the outlet pressure of the pressure reducing valve (13-3) is further reduced, and the down regulation of the inflation rate of the first gas cylinder (7) and the second gas cylinder (8) is realized;
if the current inflation rate is lower than a preset inflation rate required value, an inflation electromagnetic valve opening instruction and a second deflation electromagnetic valve closing instruction are sent to a PLC measurement and control combination (20) through a master control network switch (19); after the PLC measurement and control combination (20) receives an inflation electromagnetic valve opening instruction and a second deflation electromagnetic valve closing instruction, the relay execution combination (21) is controlled to work, the inflation electromagnetic valve (13-1) is opened, the second deflation electromagnetic valve (13-2) is closed, the pressure of the control cavity is improved, the opening degree of a valve port of the pressure reducing valve (13-3) is increased, the outlet pressure of the pressure reducing valve (13-3) is further improved, and the inflation rate of the first gas cylinder (7) and the second gas cylinder (8) is improved;
when feedback data received by the measurement and control workstation is equal to a preset gas cylinder inflation pressure requirement value, a ground electromagnetic valve, a first arrow electromagnetic valve, a second arrow electromagnetic valve and a third arrow electromagnetic valve closing instruction are sent to a PLC measurement and control combination (20) through a general control network switch (19), the PLC measurement and control combination (20) controls a relay to execute combination (21) to work after receiving the instruction, the ground electromagnetic valve, the first arrow electromagnetic valve, the second arrow electromagnetic valve and the third arrow electromagnetic valve are closed, and gas cylinder inflation is stopped; and then the measurement and control workstation sends a first deflation electromagnetic valve (15) and a second deflation electromagnetic valve (13-2) opening instruction to the PLC measurement and control combination (20) through a master control network switch (19), the PLC measurement and control combination (20) receives the instruction and then controls a relay to execute the combination (21) to work, the first deflation electromagnetic valve (15) and the second deflation electromagnetic valve (13-2) are opened, and the gas in the control cavity of the ground inflation pipeline and the pressure reducing valve (13) is discharged.
5. The gas cylinder charging and discharging subsystem suitable for unattended operation according to claim 1, characterized in that: the first isolation valve (5) and the second isolation valve (6) are connected with a downstream system.
6. The gas cylinder charging and discharging subsystem suitable for unattended operation according to claim 1, characterized in that: the electromagnetic valve on the first arrow, the electromagnetic valve on the second arrow and the electromagnetic valve on the third arrow are all step-by-step direct-acting electromagnetic valves.
7. The gas cylinder charging and discharging subsystem suitable for unattended operation according to claim 1, characterized in that: the pressure of the gas provided by the ground high-pressure gas source (11) is 23-35MPa, and the pressure of the gas provided by the ground control gas source (16) is 5 MPa.
8. An unattended gas cylinder charging and discharging subsystem according to any one of claims 1 to 7, characterised in that: the gas charging process of the gas cylinder gas charging and discharging subsystem is as follows:
the method comprises the steps that a measurement and control workstation starts a gas cylinder inflation program, the gas cylinder inflation pressure and inflation rate are set, the measurement and control workstation sends opening instructions of a ground electromagnetic valve, a first arrow electromagnetic valve, a second arrow electromagnetic valve and a third arrow electromagnetic valve to a PLC measurement and control combination (20) through a general control network switch (19), the PLC measurement and control combination (20) controls a relay to execute the combination (21) to work after receiving the opening instructions of the ground electromagnetic valve, the ground electromagnetic valve (12), a pressure reducing valve inflation electromagnetic valve (13-1), a first arrow electromagnetic valve (2), a second arrow electromagnetic valve (3) and a third arrow electromagnetic valve (4) are opened, high-pressure gas is provided by a ground high-pressure gas source (11), and the high-pressure gas enters an arrow gas cylinder inflation and deflation subsystem through an electric control pressure reducer (13) and a ground inflation pipeline;
the gas entering the rocket gas cylinder inflation and deflation subsystem enters a second gas cylinder (8) through a rocket filter (1), a first rocket solenoid valve (2) and a second rocket solenoid valve (3); the gas enters a first gas bottle (7) through an arrow-mounted filter (1), a first arrow-mounted electromagnetic valve (2), a second arrow-mounted electromagnetic valve (3) and a third arrow-mounted electromagnetic valve (4);
a signal conditioning combination (22) in the power measurement and control subsystem acquires readings of the first pressure sensor (9) and the second pressure sensor (10) in real time, converts the readings into digital signals and feeds the digital signals back to a measurement and control workstation through a PLC measurement and control combination (20) and a master control network switch (19);
the measurement and control workstation calculates the current inflation rate according to the feedback data at each moment, compares the current inflation rate with a preset inflation rate required value, and sends a second deflation electromagnetic valve opening instruction to the PLC measurement and control combination (20) through the master control network switch (19) if the current inflation rate is higher than the preset inflation rate required value; after the PLC measurement and control combination (20) receives a second deflation electromagnetic valve opening instruction, the relay is controlled to execute the combination (21) to work, the second deflation electromagnetic valve (13-2) is opened, the pressure of the control cavity is reduced, the opening degree of a valve port of the pressure reducing valve (13-3) is reduced, the outlet pressure of the pressure reducing valve (13-3) is further reduced, and the down regulation of the inflation rate of the first gas cylinder (7) and the second gas cylinder (8) is realized;
if the current inflation rate is lower than a preset inflation rate required value, an inflation electromagnetic valve opening instruction and a second deflation electromagnetic valve closing instruction are sent to a PLC measurement and control combination (20) through a master control network switch (19); after the PLC measurement and control combination (20) receives an inflation electromagnetic valve opening instruction and a second deflation electromagnetic valve closing instruction, the relay execution combination (21) is controlled to work, the inflation electromagnetic valve (13-1) is opened, the second deflation electromagnetic valve (13-2) is closed, the pressure of the control cavity is improved, the opening degree of a valve port of the pressure reducing valve (13-3) is increased, the outlet pressure of the pressure reducing valve (13-3) is further improved, and the inflation rate of the first gas cylinder (7) and the second gas cylinder (8) is improved;
when feedback data received by the measurement and control workstation is equal to a preset gas cylinder inflation pressure requirement value, a ground electromagnetic valve, a first arrow electromagnetic valve, a second arrow electromagnetic valve, a third arrow electromagnetic valve and an inflation electromagnetic valve closing instruction are sent to a PLC measurement and control combination (20) through a general control network switch (19), the PLC measurement and control combination (20) controls a relay to execute combination (21) to work after receiving the instruction, the ground electromagnetic valve, the first arrow electromagnetic valve, the second arrow electromagnetic valve, the third arrow electromagnetic valve and the inflation electromagnetic valve (13-1) are closed, and gas cylinder inflation is stopped; and then the measurement and control workstation sends a first deflation electromagnetic valve (15) and a second deflation electromagnetic valve (13-2) opening instruction to the PLC measurement and control combination (20) through a master control network switch (19), the PLC measurement and control combination (20) receives the instruction and then controls a relay to execute the combination (21) to work, the first deflation electromagnetic valve (15) and the second deflation electromagnetic valve (13-2) are opened, and the gas in the ground inflation pipeline and the control cavity of the pressure reducing valve (13) is discharged.
9. An unattended gas cylinder charging and discharging subsystem according to any one of claims 1 to 7, characterised in that: the air discharging process of the air bottle air charging and discharging subsystem is as follows:
the method comprises the steps that a gas cylinder deflation program is started by a measurement and control workstation, the measurement and control workstation sends opening instructions of a first arrow-mounted electromagnetic valve, a second arrow-mounted electromagnetic valve, a third arrow-mounted electromagnetic valve and a first deflation electromagnetic valve to a PLC measurement and control combination (20) through a general control network switch (19), the PLC measurement and control combination (20) receives the instructions and then controls a relay to execute the combination (21) to work, the first arrow-mounted electromagnetic valve (2), the second arrow-mounted electromagnetic valve (3), the third arrow-mounted electromagnetic valve (4) and the first deflation electromagnetic valve (15) are opened, gas in a first gas cylinder (7) enters a ground inflation pipeline through the first arrow-mounted electromagnetic valve (2), the second arrow-mounted electromagnetic valve (3), the third arrow-mounted electromagnetic valve (4) and a filter (1), and then is exhausted through the first deflation electromagnetic valve (15) and a current limiting element (17); the gas in the second gas bottle (8) enters a ground inflation pipeline through a first rocket-mounted electromagnetic valve (2), a second rocket-mounted electromagnetic valve (3) and a filter (1), and is exhausted through a first deflation electromagnetic valve (15) and a flow limiting element (17).
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Citations (3)
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|---|---|---|---|---|
| US5339626A (en) * | 1993-11-09 | 1994-08-23 | General Dynamics Corporation | Inflatable engine protection system for recoverable rocket booster |
| CN206191274U (en) * | 2016-08-29 | 2017-05-24 | 河南航天液压气动技术有限公司 | Large -traffic auto -feed -gas testing system |
| CN111412381A (en) * | 2020-03-19 | 2020-07-14 | 上海航天精密机械研究所 | Automatic control device and method for charging and discharging gas of rocket gas bottle |
-
2021
- 2021-08-30 CN CN202111006900.3A patent/CN113915527B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5339626A (en) * | 1993-11-09 | 1994-08-23 | General Dynamics Corporation | Inflatable engine protection system for recoverable rocket booster |
| CN206191274U (en) * | 2016-08-29 | 2017-05-24 | 河南航天液压气动技术有限公司 | Large -traffic auto -feed -gas testing system |
| CN111412381A (en) * | 2020-03-19 | 2020-07-14 | 上海航天精密机械研究所 | Automatic control device and method for charging and discharging gas of rocket gas bottle |
Non-Patent Citations (1)
| Title |
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| 张佳宁;吴燕茹;祝伟;朱;: "新一代运载火箭一体化供电测控系统设计" * |
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