A gas distribution system and control method for mixed ice projectiles

Abstract

The present invention discloses a gas distribution system and control method for a mixed ice projectile. The gas distribution system for the mixed ice projectile of the present invention includes an acceleration unit for performing gas acceleration when launching the projectile, and includes a propulsion gas source, which is connected to the barrel inlet of the condensing gun barrel through a pipeline; includes an exhaust unit for exhausting gas in the gas distribution system, and includes a vacuum unit, which is connected to other pipelines in the gas distribution system through pipelines; includes a raw material gas supply unit for providing the gas distribution system with the raw material gas required for the condensing projectile, and includes a raw material gas source, which is connected to the barrel inlet and the barrel outlet of the condensing gun barrel through a pipeline; includes a control unit for controlling the start and stop of the acceleration unit, the exhaust unit and the raw material gas supply unit, and the detection of the projectile making or launching process. The present invention can accurately supply the raw material gas for the projectile, and realize the detection of projectile forming and acceleration.

Description

Technical Field

[0001] The present invention relates to the technical field of gas distribution for cracking and mitigating ice pellets, and more particularly to a gas distribution system and a control method for mixed ice pellets. Background Art

[0002] Due to its outstanding advantages in resources, safety, cleanliness and abundance, nuclear fusion energy is the ideal energy for human society in the future. Tokamak-type magnetic confinement fusion devices have the scientific feasibility of achieving fusion and are the most likely way to commercialize fusion energy first. During the tokamak discharge process, a variety of macroscopic or microscopic instabilities may cause plasma rupture. For future fusion reactors, when plasma ruptures, the huge energy stored in the plasma will be quickly lost to the vacuum chamber and plasma-facing components, causing great damage to the device. Therefore, technical means such as the injection of a large number of impurity particles must be used to mitigate the hazards caused by plasma rupture.

[0003] The spallation pellet injection (SPI) system condenses impurity gas into centimeter-sized solid pellets, which are broken into fragments at the end of the injection pipe and enter the plasma. Compared with bulk gas injection (MGI), it has the advantages of higher particle assimilation and faster particle transport rate, and has become an effective means of rupture mitigation. The typical rupture process starts with thermal quenching (TQ). At this stage, a large amount of heat load will be deposited on the first wall. The instantaneous loss of internal energy will cause a sharp increase in plasma resistance and current quenching (CQ). At this time, the rapid changes in inductance and current induce strong current and electromagnetic force loads on the vacuum chamber wall. A large number of experiments have shown that the TQ and CQ parameters can be adjusted by changing the number of injected gas particles, gas types, and mixed gases of different types and contents, and then actively controlling the rupture process to obtain better rupture mitigation effects. As the most likely basic rupture mitigation method for future fusion reactors, SPI has important significance for accurately and multi-directionally controlling the injection parameters of pellets. However, the current raw material gas supply of SPI uses pressure reducing valves, solenoid valves, capillaries and other components to introduce the raw material gas of the gas source into the condensing gun barrel, and the gas supply time is determined by experience. This cannot guarantee the quality of projectile molding and greatly reduces the success rate of projectile launch. At the same time, this raw material gas supply method can only launch the projectile to obtain the projectile size parameters, and determine the number of projectile particles by density conversion, and the result has a large error. For the propulsion gas supply of SPI, high-pressure gas is sprayed into the condensing gun barrel through pressure reducing valves, pulse fast valves and other components to accelerate the projectile. This method cannot accurately obtain the actual injection amount of propulsion gas, and it is difficult to coordinate the coordination between projectile acceleration and differential air extraction.

[0004] Therefore, in order to accurately control the raw materials of the projectiles and accelerate the air supply, realize the accurate air supply of multiple gases mixed into the projectiles, and meet the needs of projectile forming and acceleration detection, it is necessary to establish a set of gas distribution systems that can accurately supply air and take into account projectile detection. After searching, Chinese patent CN103886920B discloses a projectile gas distribution system, including a projectile pellet gas supply pipeline, a projectile propulsion gas supply pipeline, an air pump group, and a computer system; the projectile pellet gas supply pipeline is connected to the projectile propulsion gas supply pipeline through the air pump group, and the computer system is connected to the projectile pellet gas supply pipeline and the projectile propulsion gas supply pipeline. In this scheme, the projectile pellet gas supply pipeline and the propulsion gas pipeline are single, and it is impossible to accurately supply air to the projectile and meet the needs of projectile forming and acceleration detection. Summary of the invention

[0005] 1. Technical problem to be solved by the invention

[0006] The present invention provides a gas distribution system and a control method for a mixed ice projectile, which solve the problem of how to accurately supply raw gas for the projectile and realize the detection of projectile forming and acceleration.

[0007] 2. Technical solution

[0008] In order to achieve the above object, the technical solution provided by the present invention is:

[0009] A gas distribution system for mixed ice projectiles, comprising a control unit, an acceleration unit, an exhaust unit and a raw material gas supply unit, wherein the acceleration unit is used for gas acceleration when launching a projectile, and comprises a propulsion gas source, and the propulsion gas source is connected to the barrel inlet of a condensing gun barrel through a pipeline; the exhaust unit is used for exhaust in the gas distribution system, and comprises an exhaust unit, and the exhaust unit is connected to other pipelines in the gas distribution system through pipelines; the raw material gas supply unit is used for providing the gas distribution system with raw material gas required for condensing projectiles, and comprises a raw material gas source, and the raw material gas source is connected to the barrel inlet and the barrel outlet of the condensing gun barrel through pipelines; the acceleration unit, the exhaust unit and the raw material gas supply unit are all connected to the control unit, and the control unit is used to control the start and stop of the acceleration unit, the exhaust unit and the raw material gas supply unit, as well as the detection of the projectile making or launching process.

[0010] Furthermore, the raw gas source in the raw gas supply unit includes a raw gas source one and a raw gas source two, the outlet of the raw gas source one is connected to a gas flow meter one, a solenoid valve one and a7 port of a three-way pipe seven in sequence through a pipeline, the outlet of the raw gas source two is connected to a gas flow meter two, a solenoid valve two and a b7 port of a three-way pipe seven in sequence through a pipeline, the c7 port of the three-way pipe seven is connected to a gas mixer and a c5 port of a three-way pipe five in sequence through a pipeline; the a5 port of the three-way pipe five is connected to the barrel inlet of the condensation gun barrel through a pneumatic valve one, and the b5 port of the three-way pipe five is connected to the barrel outlet of the condensation gun barrel through a pneumatic valve three.

[0011] Furthermore, a barrel vacuum gauge is arranged on the pipeline connecting the raw gas source and the barrel outlet of the condensing barrel, and the barrel vacuum gauge is arranged close to the barrel outlet; a pneumatic valve two is arranged between the pneumatic valve three and the barrel outlet of the condensing barrel; and the barrel vacuum gauge is arranged between the pneumatic valve two and the pneumatic valve three.

[0012] Furthermore, solenoid valve three and solenoid valve four are connected in sequence between the gas mixer and the c5 port of the three-way pipe five; a raw gas pressure regulating tank is connected between the solenoid valve three and the solenoid valve four, and a feed pressure regulating tank vacuum gauge is provided on the raw gas pressure regulating tank.

[0013] Furthermore, the propulsion gas source outlet is connected to the barrel inlet of the condensing gun barrel through a pipeline and is connected to the high-pressure solenoid valve 1, the propulsion gas pressure-stabilizing tank and the quick valve in sequence. A pressure transmitter is installed on the propulsion gas pressure-stabilizing tank.

[0014] Furthermore, a three-way pipe six is ​​arranged on the connecting pipe between the gas mixer and the solenoid valve three, a three-way pipe one is arranged on the connecting pipe between the propulsion gas pressure-stabilizing tank and the quick valve, and a three-way pipe eight is arranged on the connecting pipe between the pneumatic valve one and the three-way pipe five; the outlet of the vacuum unit is connected to the gate valve, the gas buffer tank and the solenoid valve five in sequence through a pipe and then connected to the three-way pipe eight; a four-way valve four is arranged on the connecting pipe between the gas buffer tank and the solenoid valve five, a high-pressure solenoid valve two is arranged on the connecting pipe between the four-way valve four and the three-way pipe one, and a solenoid valve six is ​​arranged on the connecting pipe between the four-way valve four and the three-way pipe six.

[0015] Furthermore, all the valves and vacuum gauges are electrically connected to the control unit.

[0016] The present invention also provides a method for controlling a gas distribution system of a mixed ice projectile, which uses the gas distribution system of a mixed ice projectile to make and launch the mixed projectile, and the specific steps are as follows:

[0017] Step 1, closing the propellant gas source, the raw material gas source 1 and the raw material gas source 2, opening all valves of the gas distribution system of the mixed projectile, and using the exhaust unit to empty all pipelines of the gas distribution system of the mixed projectile;

[0018] Step 2, close all valves, open the valve on the pipeline of the raw material gas supply unit, and the raw material gas supply unit injects the required gas into the condensation gun barrel, and condenses into a pellet in the condensation gun barrel;

[0019] Step 3, close the valve on the pipeline of the raw material gas supply unit, and the acceleration unit accelerates the projectile to launch it.

[0020] Furthermore, in the step 2, the raw gas source 1 and the raw gas source 2 in the raw gas supply unit first supply gas into the raw gas pressure regulating tank, and the raw gas pressure regulating tank injects the required gas into the condensing gun barrel; the propulsion gas source in the acceleration unit first supplies gas into the propulsion gas pressure regulating tank; in the step 3, the projectile is accelerated and launched by supplying gas from the gas pressure regulating tank.

[0021] Furthermore, in step 2, after the raw material gas supply unit completes the raw material gas supply, the electromagnetic valve 4 and the pneumatic valve 3 are closed, and the electromagnetic valve 5 is opened to observe the change in the pressure reading of the barrel vacuum gauge. If it does not change, it means that the pellet is condensed successfully. If it decreases rapidly, it means that the pellet is not condensed successfully and it is necessary to supply gas again to re-prepare the pellet. In step 3, the pneumatic valve 2 is opened, and the acceleration unit launches the pellet. If the reading of the barrel vacuum gauge rises instantly, it means that the pellet is launched successfully. If it does not change, it means that the pellet is not launched successfully and it needs to be launched again or the pellet is re-prepared and launched again.

[0022] 3. Beneficial effects

[0023] Compared with the existing known technologies, the technical solution provided by the present invention has the following significant effects:

[0024] (1) The invention provides a gas distribution system and control method for a mixed ice projectile. The acceleration unit, exhaust unit and raw material gas supply unit are all connected to a control unit. The control unit is used to control the start and stop of the acceleration unit, exhaust unit and raw material gas supply unit, as well as the detection of the projectile manufacturing or launching process. The different units work in coordination, and can accurately control the raw material gas supply of the projectile and the accelerated gas supply for launching, and meet the detection requirements of projectile manufacturing and accelerated launching, thus establishing a gas distribution system that can accurately supply gas and take into account projectile detection.

[0025] (2) The gas distribution system and control method of a mixed ice projectile of the present invention, the raw gas source in the raw gas supply unit includes raw gas source 1 and raw gas source 2, which realizes the gas supply of multiple gases mixed into the projectile and can be precisely controlled. The pneumatic valve 1 and pneumatic valve 3 arranged on the pipeline of the raw gas supply unit and close to the two ends of the barrel are air-controlled valves, which have better sealing performance than the solenoid valve, and can effectively prevent the propulsion gas source from entering the pipeline of the raw gas supply unit during the process of accelerating the projectile by the acceleration unit.

[0026] (3) The gas distribution system and control method of the mixed ice projectile of the present invention is provided with a barrel vacuum gauge in the pipeline of the raw material gas supply unit and near the barrel outlet. When the projectile is made, the pressure reading of the barrel vacuum gauge changes to detect whether the projectile is made successfully. When the projectile is accelerated and fired, the pressure reading of the barrel vacuum gauge also changes to detect whether the projectile is fired successfully. The detection process is convenient and accurate, and the detection method is convenient and visually obvious, so that the operation of the system can be quickly understood.

[0027] (4) In the gas distribution system and control method of the mixed ice projectile of the present invention, due to the sealing requirement, the pneumatic valve 1 and the pneumatic valve 3 arranged on the pipeline of the raw material gas supply unit and near the two ends of the barrel are gas-controlled valves; the exhaust unit needs to empty the gas in each pipeline, and the gas flow rate is relatively large, and a plug valve is arranged on the main pipeline of the exhaust unit; high-pressure gas needs to be generated on the pipeline of the acceleration unit to accelerate and quickly launch the projectile, and a high-pressure solenoid valve 1 and a quick valve are arranged on the pipeline; different pipelines are provided with different valves according to the needs and local conditions, which not only enables the gas distribution system to operate accurately, but also coordinates cost control on this basis. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the principle of the present invention;

[0029] Figure 2 This is a schematic diagram of the gas circuit connection state of the present invention;

[0030] Figure 3 This is a schematic diagram of the connection state of the acceleration unit of the present invention;

[0031] Figure 4 This is a schematic diagram of the connection state of the exhaust unit of the present invention;

[0032] Figure 5 This is a schematic diagram of the connection state of the raw material gas supply unit of the present invention.

[0033] Explanation of the symbols in the schematic diagram:

[0034] 1. Propulsion gas source; 2. High-pressure solenoid valve 1; 3. Pressure transmitter; 4. Propulsion gas pressure-stabilizing tank; 5. Quick valve; 6. Condensation gun barrel; 60. Gun barrel inlet; 61. Gun barrel outlet;

[0035] 7. Projectile; 8. Ball valve; 9. Pneumatic valve 2; 10. High-pressure solenoid valve 2; 11. Pneumatic valve 1; 12. Gun barrel vacuum gauge; 13. Pneumatic valve 3; 14. Vacuum pump; 15. Gate valve; 16. Gas buffer tank; 17. Solenoid valve 5; 18. Solenoid valve 6; 19. Raw gas source 1; 20. Gas flow meter 1; 21. Solenoid valve 1; 22. Raw gas source 2; 23. Gas flow meter 2; 24. Solenoid valve 2; 25. Gas mixer; 26. Solenoid valve 3; 27. Raw gas pressure tank; 28. Vacuum gauge of feed pressure tank; 29. ​​Solenoid valve 4;

[0036] 101, three-way pipe one; 102, three-way pipe two; 103, three-way pipe three; 104, four-way pipe four; 105, five-way pipe five; 106, six-way pipe six; 107, seven-way pipe seven; 108, eight-way pipe eight. DETAILED DESCRIPTION

[0037] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.

[0038] like Figure 1 and Figure 2 In this embodiment, a gas distribution system for a mixed ice projectile includes a control unit, an acceleration unit 100, an exhaust unit 200 and a raw material gas supply unit 300. The acceleration unit 100 is used to accelerate the gas when the condensation projectile is launched, and it includes a propulsion gas source 1, which is connected to the barrel inlet 60 of the condensation barrel 6 through a pipeline. The condensation barrel 6 includes a barrel inlet 60 and a barrel outlet 61. The gas enters the condensation barrel 6 and condenses into a projectile 7 in the condensation barrel 6. In this embodiment, the condensation barrel 6 is a seamless stainless steel tube with a wall thickness of 0.5 mm and an inner diameter of 10-30 mm. This tube can be replaced according to the size requirements of the projectile required for rupture relief. The solid ice column formed by the condensation of the raw gas in the condensation barrel 6, the gas of the condensation projectile can be either a high-Z gas such as Ar / N2 or a low-Z gas such as D2 / Ne.

[0039] In this embodiment, the exhaust unit 200 is used for exhaust in the gas distribution system, which includes an exhaust unit 14, which is connected to other pipelines in the gas distribution system through pipelines, and is used to empty the gas in the pipeline. The exhaust unit 14 is a large Rhodes pump unit. The raw material gas supply unit 300 is used to provide the gas distribution system with the raw material gas required for the condensing projectile, which includes a raw material gas source, which is connected to the barrel inlet 60 and the barrel outlet 61 of the condensing gun barrel 6 through a pipeline, and the raw material gas is injected into the condensing gun barrel 6. The acceleration unit 100, the exhaust unit 200 and the raw material gas supply unit 300 are all connected to the control unit. The control unit is used to control the start and stop of the acceleration unit 100, the exhaust unit 200 and the raw material gas supply unit 300, control the coordinated work between the various units, and detect the projectile production or launch process.

[0040] Combination Figure 5 , the raw gas source in the raw gas supply unit 300 includes a raw gas source 19 and a raw gas source 22. The outlet of the raw gas source 19 is connected to the gas flow meter 20, the solenoid valve 21 and the a7 port of the three-way pipe 107 in sequence through a pipeline, wherein the three-way pipe 107 includes the a7 port, the b7 port and the c7 port. The outlet of the raw gas source 22 is connected to the gas flow meter 23, the solenoid valve 24 and the b7 port of the three-way pipe 107 in sequence through a pipeline, and the c7 port of the three-way pipe 107 is connected to the gas mixer 25 and the c5 port of the three-way pipe 105 in sequence through a pipeline, and the three-way pipe 105 includes the a5 port, the b5 port and the c5 port. The a5 port of the three-way pipe 105 is connected to the barrel inlet 60 of the condensing gun barrel 6 through the pneumatic valve 11, and the b5 port of the three-way pipe 105 is connected to the barrel outlet 61 of the condensing gun barrel 6 through the pneumatic valve 3 13. The gas mixer 25 is used to mix different raw gas evenly and make mixed ice pellets better. Pneumatic valve 11 and pneumatic valve 3 13 are air-controlled valves, which have better sealing properties than solenoid valves. Pneumatic valve 11 and pneumatic valve 3 13 are bellows sealed valves with a leakage rate of <10-9Pa·m3 / s and a working pressure of 0-10MPa, which can effectively prevent the acceleration unit from accelerating the projectile and propulsion gas source into the pipeline of the raw gas supply unit. Gas flow meter 1 20 and gas flow meter 2 23 are gas flow meters with controllable flow. When using different types of gas sources, corresponding flow meters can be replaced. The gas mixer 25 is a gas tank with built-in stirring blades. The raw gas flowing out of gas flow meter 1 20 and gas flow meter 2 23 enters the gas mixer 25, and the raw gas is fully mixed under the full stirring of the blades.

[0041] In this embodiment, the propellant gas source 1, the raw gas source 19 and the raw gas source 2 22 are all 50L gas cylinders equipped with pressure reducing valves matching the types of the gas sources. Generally, the propellant gas adopts low-Z gas such as He, and the pressure of the gas output by the gas source is 1-10MPa; the raw gas adopts H2 / D2 / Ne / Ar and other gases with effective rupture mitigation, and the pressure of the gas source output is 0-0.2MPa.

[0042] In order to detect whether the ice pellets in the condensation gun barrel 6 are condensed successfully, a gun barrel vacuum gauge 12 is arranged on the gas supply pipeline of the raw material gas supply unit 300, which is located on the pipeline connecting the raw material gas source and the gun barrel outlet 61 of the condensation gun barrel 6, and the gun barrel vacuum gauge 12 is arranged close to the gun barrel outlet 61. In order to protect the gun barrel vacuum gauge 12 from being damaged by gas impact, a pneumatic valve 2 9 is arranged between the pneumatic valve 3 13 and the gun barrel outlet 61 of the condensation gun barrel 6, and the gun barrel vacuum gauge 12 is arranged between the pneumatic valve 2 9 and the pneumatic valve 3 13, and the pneumatic valve 2 9 can effectively protect the gun barrel vacuum gauge 12 from being damaged. The pneumatic valve 2 9 is also a bellows sealing valve, and its leakage rate is <10-9Pa·m3 / s, and its working pressure is 0-10MPa, which can play a good sealing role.

[0043] In this embodiment, in order to allow the raw material gas to be injected under a stable pressure, a raw material gas pressure-stabilizing tank 27 is provided on the gas supply pipeline of the raw material gas supply unit 300. The solenoid valve 3 26 and the solenoid valve 4 29 are connected in sequence between the gas mixer 25 and the c5 port of the three-way pipe 5 105. The raw material gas pressure-stabilizing tank 27 is located between the solenoid valve 3 26 and the solenoid valve 4 29. A feed pressure-stabilizing tank vacuum gauge 28 is provided on the raw material gas pressure-stabilizing tank 27, and the feed pressure-stabilizing tank vacuum gauge 28 is used to detect the gas pressure in the raw material gas pressure-stabilizing tank 27.

[0044] like Figure 3 and Figure 4 , the outlet of the propulsion gas source 1 in the acceleration unit 100 is connected to the barrel inlet 60 of the condensing gun barrel 6 through a pipeline, and the propulsion gas pressure regulating tank 4 is connected to the high-pressure electromagnetic valve 1 2, the propulsion gas pressure regulating tank 4 and the fast valve 5 in sequence, and the pressure transmitter 3 is installed on the propulsion gas pressure regulating tank 4. In this embodiment, the high-pressure electromagnetic valve 1 2 and the high-pressure electromagnetic valve 2 10 are the same kind of normally closed electromagnetic valves, the working pressure of the valve is 0-10MPa, and the response time is in the order of hundreds of milliseconds. The pressure transmitter 3 is a high-precision pressure sensor that can accurately measure the pressure in the propulsion gas pressure regulating tank 4, and the measurement range is 0.1-10MPa. The propulsion gas pressure regulating tank 4 is a pressure vessel with a pressure range of 0-20MPa and a volume of 3L. The propulsion gas pressure regulating tank 4 can accelerate the launch of projectiles with gas at a certain pressure. The fast valve 5 is a fast-response electromagnetic valve, the valve opening time is controllable in the millisecond level, and the working pressure is 0.1-10MPa.

[0045] A ball valve 8 is provided on the pipeline connected to the barrel outlet 61 in the acceleration unit 100. The ball valve 8 is a common electric ball valve, and its inner diameter is generally 1.2 times the diameter of the projectile. A three-way pipe 103 is provided on the connecting pipeline between the ball valve 8 and the barrel outlet 61. The three-way pipe 103 includes a3 port, b3 port and c3 port, wherein the a3 port is connected to the barrel outlet 61, the b3 port is connected to the ball valve 8, and the c3 port is connected to the pneumatic valve 2 9. A three-way pipe 102 is provided on the pipeline of the acceleration unit 100 between the quick valve 5 and the barrel inlet 60. The three-way pipe 102 includes a2 port, b2 port and c2 port, wherein the a2 port is connected to the quick valve 5, the b2 port is connected to the barrel inlet 60, and the c2 port is connected to the pneumatic valve 1 11.

[0046] Combination Figure 3 In this embodiment, a three-way pipe six 106 is provided on the connecting pipeline between the gas mixer 25 and the solenoid valve three 26, and the three-way pipe six 106 includes a6 port, b6 port and c6 port. A three-way pipe one 101 is provided on the connecting pipeline between the propulsion gas pressure-stabilizing tank 4 and the quick valve 5, and the three-way pipe one 101 includes a1 port, b1 port and c1 port. A three-way pipe eight 108 is provided on the connecting pipeline between the pneumatic valve one 11 and the three-way pipe five 105, and the three-way pipe eight 108 includes a8 port, b8 port and c8 port. The outlet of the exhaust unit 14 is connected to the gate valve 15, the gas buffer tank 16 and the solenoid valve five 17 in sequence through a pipeline, and then communicated with the three-way pipe eight 108. The gate valve 15 is a gate valve with knife-edge flanges at both ends and sealed with a rubber ring, which can protect the internal pipeline of the gas distribution system when it is shut down. The a8 port of the three-way pipe eight 108 is connected to the solenoid valve five 17, the b8 port is connected to the three-way pipe five 105, and the c8 port is connected to the pneumatic valve one 11. The four-way pipe four 104 is arranged on the connecting pipeline between the gas buffer tank 16 and the solenoid valve five 17. The four-way pipe four 104 includes the a4 port, the b4 port, the c4 port and the d4 port. The high-pressure solenoid valve two 10 is arranged on the connecting pipeline between the four-way pipe four 104 and the three-way pipe one 101, and the solenoid valve six 18 is arranged on the connecting pipeline between the four-way pipe four 104 and the three-way pipe six 106. Specifically, the a1 port of the three-way pipe one 101 is connected to the propulsion gas pressure-stabilizing tank medium 4, the b1 port is connected to the fast valve 5, and the c1 port is connected to the high-pressure solenoid valve two 10. The a4 port of the four-way pipe four 104 is connected to the gas buffer tank 16, the b4 port is connected to the solenoid valve five 17, the c4 port is connected to the high-pressure solenoid valve two 10, and the d4 port is connected to the solenoid valve six 18. The a6 port of the three-way pipe 106 is connected to the gas mixer 25, the b6 port is connected to the solenoid valve 26, and the c6 port is connected to the solenoid valve 18.

[0047] It should be noted that in this embodiment, the gas buffer tank 16 and the raw gas pressure-stabilizing tank 27 are ordinary vacuum containers. The volume of the gas buffer tank 16 is 100L, which is mainly used for buffering when the high-pressure propulsion gas is extracted. The volume of the raw gas pressure-stabilizing tank 27 is 5-20L, which is selected according to the size of the prepared projectile. Solenoid valve 1 21, solenoid valve 2 24, solenoid valve 3 26, solenoid valve 4 29, solenoid valve 5 17 and solenoid valve 6 18 are ordinary normally closed solenoid valves, the working pressure of the valve is 0-0.5MPa, and the response time is in the order of hundreds of milliseconds.

[0048] In order to better coordinate the work of the control unit by controlling each valve, in this embodiment, all valves and vacuum gauges are electrically connected to the control unit. The control unit includes a user interface for manually setting relevant parameters on the user interface, and the control unit also includes a control system, which adopts a PLC control system to coordinate and control the operation of the gas distribution system.

[0049] The present invention also provides a method for controlling a gas distribution system of a mixed ice projectile, which is used to control a gas distribution system of a mixed ice projectile to produce and launch the mixed ice projectile. The steps include:

[0050] Step 1, close the propulsion gas source 1, raw gas source 19 and raw gas source 2 22, open all valves of the gas distribution system of the mixed projectile, and use the exhaust unit 200 to empty all pipelines of the gas distribution system of the mixed ice projectile.

[0051] Step 2, close all valves, open the valve on the pipeline of the raw material gas supply unit 300, and the raw material gas supply unit 300 injects the required gas into the condensation gun barrel 6, and condenses it into a pellet in the condensation gun barrel 6.

[0052] Step 2 specifically includes:

[0053] 2.1 Close all valves, adjust the outlet pressure of propulsion gas source 1, raw gas source 19 and raw gas source 22, and adjust the outlet pressure to the required value through the outlet pressure reducing valve on the gas cylinder.

[0054] 2.2 The gas pressure required for launching the projectile is set in the user interface of the control unit. The pressure is the indication value of the pressure transmitter 3, which is also the gas pressure in the propulsion gas pressure regulator tank 4. The control system in the control unit coordinates the on and off of the high-pressure solenoid valve 1 2 and the high-pressure solenoid valve 2 10, and the propulsion gas source 1 supplies gas to the propulsion gas pressure regulator tank 4 until the indication of the pressure transmitter 3 reaches the set value.

[0055] 2.3 Open solenoid valve six 18, solenoid valve one 21 and solenoid valve two 24, set the flow of gas flow meter one 20 and gas flow meter two 23 through the user interface, and close solenoid valve six 18 after the flow is stable.

[0056] 2.4 Set the gas supply pressure of the raw gas to the condensing gun tube 6 through the user interface, that is, the gas pressure in the raw gas pressure regulating tank 27 and the indication value of the supply pressure regulating tank vacuum gauge 28. The control system coordinates the on and off of the solenoid valve 4 29, the solenoid valve 5 17 and the solenoid valve 3 26, and the raw gas source 1 19 and the raw gas source 2 22 supply gas to the raw gas pressure regulating tank 27 until the gas pressure in the raw gas pressure regulating tank 27 reaches the set value.

[0057] 2.5 Open solenoid valve five 17, pneumatic valve one 11, pneumatic valve three 13, and pneumatic valve two 9 to drain the condensing gas supply pipeline again.

[0058] 2.6 Close the electromagnetic valve 5 17, open the electromagnetic valve 4 29, and supply air from both ends of the condensation gun barrel 6 to the middle through the feed pipe to condense the pellets to form the pellets 7. Close the electromagnetic valve 4 29 and the pneumatic valve 3 13.

[0059] 2.7 Open the electromagnetic valve 5 17 and observe the pressure change of the barrel vacuum gauge 12. If it does not change, it means that the pellet 7 is condensed successfully. If it decreases rapidly, it means that the pellet 7 is not condensed successfully. Bake the condensing barrel to melt the uncondensed pellets and repeat processes 2.4, 2.5, and 2.6.

[0060] Step 3, close the valve on the pipeline of the raw material gas supply unit 300, and the acceleration unit 100 accelerates the projectile to launch it.

[0061] Step 3 specifically includes:

[0062] 3.1 Open pneumatic valve three 13, evacuate the air paths at both ends of the projectile, close pneumatic valve one 11 and pneumatic valve three 13, open ball valve 8, and the projectile is now in a state ready for launch.

[0063] 3.2 Open the quick valve 5 to accelerate the projectile to be launched. If the barrel vacuum gauge rises instantly, it means that the projectile is launched successfully. Otherwise, bake and condense the barrel to melt the uncondensed projectile, and repeat the processes 2.4, 2.5, 2.6, 2.7 in step 2, and processes 3.1 and 3.2 in step 3.

[0064] In this embodiment, in step 2, the raw gas source 19 and the raw gas source 2 2 in the raw gas supply unit 300 first supply gas to the raw gas pressure regulating tank 27, and the raw gas pressure regulating tank 27 injects the required gas into the condensing gun barrel 6; the propulsion gas source 1 in the acceleration unit 100 first supplies gas to the propulsion gas pressure regulating tank 4; in step 3, the gas supplied by the inlet gas pressure regulating tank 4 accelerates the projectile to be launched.

[0065] Regarding the detection method of the barrel vacuum gauge 12, in step 2, after the raw material gas supply unit 300 completes the raw material gas supply, the electromagnetic valve four 29 and the pneumatic valve three 13 are closed, and the electromagnetic valve five 17 is opened to observe the change in the pressure reading of the barrel vacuum gauge 12. If it does not change, it means that the pellet is condensed successfully. If it decreases rapidly, it means that the pellet is not condensed successfully and it is necessary to supply gas again to prepare the pellet again. In step 3, the pneumatic valve two 9 is opened, and the valve on the pipeline of the acceleration unit 100 is opened to launch the pellet. If the reading of the barrel vacuum gauge 12 rises instantly, it means that the pellet is launched successfully. If it does not change, it means that the pellet is not launched successfully and it is necessary to launch again or prepare the pellet again and then launch it.

[0066] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A gas distribution system for mixed ice pellets, comprising a control unit, an acceleration unit (100), an exhaust unit (200) and a raw material gas supply unit (300), The acceleration unit (100) is used to accelerate gas when launching a projectile, and comprises a propelling gas source (1), wherein the propelling gas source (1) is connected to a barrel inlet (60) of a condensing barrel (6) via a pipeline; The exhaust unit (200) is used for exhausting air in the gas distribution system, and comprises an exhaust unit (14), wherein the exhaust unit (14) is connected to other pipelines in the gas distribution system through pipelines; The raw material gas supply unit (300) is used to provide the gas distribution system with raw material gas required for condensing the projectiles, and comprises a raw material gas source, wherein the raw material gas source is connected to the barrel inlet (60) and the barrel outlet (61) of the condensing barrel (6) through a pipeline; The acceleration unit (100), the exhaust unit (200) and the raw material gas supply unit (300) are all connected to a control unit, and the control unit is used to control the start and stop of the acceleration unit (100), the exhaust unit (200) and the raw material gas supply unit (300), and the detection of the projectile manufacturing or launching process; The raw gas source in the raw gas supply unit (300) includes a raw gas source 1 (19) and a raw gas source 2 (22); the outlet of the raw gas source 1 (19) is connected to a gas flow meter 1 (20), a solenoid valve 1 (21) and a port a7 of a three-way pipe 7 (107) in sequence through a pipeline; the outlet of the raw gas source 2 (22) is connected to a gas flow meter 2 (23), a solenoid valve 2 (24) and a port b7 of a three-way pipe 7 (107) in sequence through a pipeline; the port c7 of the three-way pipe 7 (107) is connected to a gas mixer (25) and a port c5 of a three-way pipe 5 (105) in sequence through a pipeline; the port a5 of the three-way pipe 5 (105) is connected to a barrel inlet (60) of a condensing gun barrel (6) via a pneumatic valve 1 (11); the port b5 of the three-way pipe 5 (105) is connected to a barrel outlet (61) of a condensing gun barrel (6) via a pneumatic valve 3 (13).

2. A gas distribution system for mixed ice pellets according to claim 1, characterized in that: A barrel vacuum gauge (12) is provided on a pipeline connecting the raw gas source and the barrel outlet (61) of the condensing barrel (6), and the barrel vacuum gauge (12) is provided close to the barrel outlet (61); A pneumatic valve two (9) is arranged between the pneumatic valve three (13) and the barrel outlet (61) of the condensing barrel (6); and the barrel vacuum gauge (12) is arranged between the pneumatic valve two (9) and the pneumatic valve three (13).

3. A gas distribution system for mixed ice pellets according to claim 2, characterized in that: The gas mixer (25) and the C5 port of the three-way pipe (105) are connected in sequence to the electromagnetic valve (26) and the electromagnetic valve (29); the raw gas pressure regulating tank (27) is connected between the electromagnetic valve (26) and the electromagnetic valve (29), and a feed pressure regulating tank vacuum gauge (28) is provided on the raw gas pressure regulating tank (27).

4. A gas distribution system for mixed ice pellets according to claim 3, characterized in that: The outlet of the propulsion gas source (1) is connected to a high-pressure electromagnetic valve (2), a propulsion gas pressure-stabilizing tank (4) and a quick valve (5) in sequence through a pipeline, and then communicated with a barrel inlet (60) of a condensing gun barrel (6). A pressure transmitter (3) is installed on the propulsion gas pressure-stabilizing tank (4).

5. A gas distribution system for mixed ice pellets according to claim 4, characterized in that: A three-way pipe six (106) is provided on the connecting pipe between the gas mixer (25) and the solenoid valve three (26), a three-way pipe one (101) is provided on the connecting pipe between the propulsion gas pressure-stabilizing tank (4) and the fast valve (5), and a three-way pipe eight (108) is provided on the connecting pipe between the pneumatic valve one (11) and the three-way pipe five (105); The outlet of the air extraction unit (14) is connected to the gate valve (15), the gas buffer tank (16) and the electromagnetic valve five (17) in sequence through a pipeline, and then communicated with the three-way pipe eight (108); A four-way pipe (104) is arranged on the connecting pipe between the gas buffer tank (16) and the five-way solenoid valve (17), a high-pressure solenoid valve (2) (10) is arranged on the connecting pipe between the four-way pipe (104) and the one-way pipe (101), and a six-way solenoid valve (18) is arranged on the connecting pipe between the four-way pipe (104) and the six-way pipe (106).

6. A gas distribution system for mixed ice pellets according to claim 5, characterized in that: All the valves and vacuum gauges are electrically connected to the control unit.

7. A method for controlling a gas distribution system of a mixed ice projectile, using a gas distribution system of a mixed ice projectile as claimed in claim 6, for making and launching mixed projectiles, the specific steps are as follows: Step 1, closing the propelling gas source (1), the raw material gas source 1 (19) and the raw material gas source 2 (22), opening all valves of the gas distribution system of the mixed projectile, and using the exhaust unit (200) to empty all pipelines of the gas distribution system of the mixed projectile; Step 2, closing all valves, opening the valve on the pipeline of the raw material gas supply unit (300), and the raw material gas supply unit (300) injects the required gas into the condensation gun barrel (6), and condenses into pellets in the condensation gun barrel (6); Step 3, closing the valve on the pipeline of the raw material gas supply unit (300), and the acceleration unit (100) accelerates the projectile to be launched.

8. A method for controlling a gas distribution system of a mixed ice projectile according to claim 7, characterized in that: In the step 2, the raw gas source 1 (19) and the raw gas source 2 (22) in the raw gas supply unit (300) first supply gas to the raw gas pressure regulating tank (27), and the raw gas pressure regulating tank (27) injects the required gas into the condensing gun tube (6); the propulsion gas source (1) in the acceleration unit (100) first supplies gas to the propulsion gas pressure regulating tank (4); In step 3, the projectile is accelerated and launched by supplying gas from the propelling gas surge tank (4).

9. A method for controlling a gas distribution system of a mixed ice projectile according to claim 7 or 8, characterized in that: In step 2, after the raw material gas supply unit (300) completes the raw material gas supply, the electromagnetic valve 4 (29) and the pneumatic valve 3 (13) are closed, the electromagnetic valve 5 (17) is opened, and the pressure reading of the barrel vacuum gauge (12) is observed. If it remains unchanged, it means that the pellets are condensed successfully. If it decreases rapidly, it means that the pellets are not condensed successfully and it is necessary to supply gas again to prepare the pellets again. In step 3, the pneumatic valve 2 (9) is opened, and the acceleration unit (100) fires the pellet. If the reading of the barrel vacuum gauge (12) rises instantly, it means that the pellet has been successfully fired. If it does not change, it means that the pellet has not been successfully fired and needs to be fired again or the pellet needs to be re-prepared and fired again.

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