CN116592696A - Piston type projectile injection system and method for plasma fracture protection - Google Patents
Piston type projectile injection system and method for plasma fracture protection Download PDFInfo
- Publication number
- CN116592696A CN116592696A CN202310676127.4A CN202310676127A CN116592696A CN 116592696 A CN116592696 A CN 116592696A CN 202310676127 A CN202310676127 A CN 202310676127A CN 116592696 A CN116592696 A CN 116592696A
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- Prior art keywords
- pellet
- cavity
- clamp
- reset
- air inlet
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- 238000002347 injection Methods 0.000 title claims abstract description 19
- 239000007924 injection Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 7
- 239000008188 pellet Substances 0.000 claims abstract description 141
- 239000006187 pill Substances 0.000 claims abstract description 54
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 238000002955 isolation Methods 0.000 claims abstract description 12
- 238000005086 pumping Methods 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000003380 propellant Substances 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 7
- 230000001133 acceleration Effects 0.000 abstract description 5
- 238000002474 experimental method Methods 0.000 abstract description 3
- 230000006378 damage Effects 0.000 description 4
- 230000004927 fusion Effects 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011553 magnetic fluid Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
- F41A9/38—Loading arrangements, i.e. for bringing the ammunition into the firing position
-
- 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
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Plasma Technology (AREA)
Abstract
The invention provides a piston type pellet injection system and method for plasma fracture protection, wherein the piston type pellet injection system comprises an air inlet cavity, a pellet acceleration cavity, a reset cavity, an air inlet flange, an air release pipe, a feeding pipe, a pellet clamp, a reset air pipe, an isolation sealing ring, an outlet flange, a reset limiting mechanism, an air inlet cavity air release valve, a reset cavity air inlet valve and a reset cavity air release valve. The technical problem that the existing spallation pill injection system needs differential pumping of a large Roots pump is solved, and the high-pressure gas driving and piston type working principle is adopted, so that the acceleration of the pill and the effective isolation and removal of driving gas are realized. Provides a high-efficiency impurity injection tool for plasma fracture alleviation experiments.
Description
Technical Field
The invention relates to the fields of vacuum technology, high gas drive, projectile injection and magnetic confinement fusion, in particular to a piston type projectile injection system and method applied to plasma fracture protection.
Background
In the tokamak discharge test, plasma breakage is difficult to avoid due to plasma control, magnetic fluid instability, impurities, high-energy escape particles, and the like. Particularly, in the main research content of realizing the steady-state operation of the tokamak fusion reactor, namely, in the discharge of maintaining steady-state high-parameter plasma, the plasma rupture discharge can cause serious damage effects, such as large heat load of a first wall, strong mechanical stress, large escape current and the like, and even serious damage is caused to a target plate of the polarizer, a first wall component and even a device. Although there have been intensive studies on the operation limits of different parameters of the existing tokamak discharge, and the occurrence of the rupture can be prevented by controlling the tokamak in the "safe operation" area, some rupture is difficult to avoid, so that, in order to avoid or reduce the damage caused by the rupture to a large device under the condition of high parameters, it is necessary and important to develop a study on the release of plasma rupture, which is one of the important points of the current physical study on tokamak plasma.
Experimental research shows that if impurity particles with certain energy can be rapidly injected into the plasma before the rupture occurs, the harm of the plasma rupture can be reduced to the minimum degree, so that the safety of the device is protected.
Because of the abrupt nature of plasma rupture, a fast-responding impurity implantation system is necessary to achieve fast and accurate impurity particle implantation.
Disclosure of Invention
The technical problem that the existing spallation pill injection system needs differential pumping of a large Roots pump is solved, and the high-pressure gas driving and piston type working principle is adopted, so that the acceleration of the pill and the effective isolation and removal of driving gas are realized. Provides a high-efficiency impurity injection tool for plasma fracture alleviation experiments.
In order to solve the technical problems, the invention provides a piston type pellet injection system for plasma fracture protection, which comprises an air inlet cavity, an accelerating cavity, a reset cavity, an air inlet flange, an air release pipe, a feeding pipe, a pellet clamp, a reset air pipe, an isolation sealing ring, an outlet flange, a reset limiting mechanism, an air inlet cavity air release valve, a reset cavity air inlet valve, a reset cavity air release valve and the like. The pill accelerating cavity is a sliding track of the pill clamp, one end of the pill accelerating cavity is connected with the air inlet cavity, and the other end of the pill accelerating cavity is connected with the reset cavity; the pellet clamp is positioned in the pellet accelerating cavity, and can slide left and right in the pellet accelerating cavity; the pellet feeding pipe is communicated with the pellet accelerating cavity through a side surface opening of the pellet accelerating cavity; one end of the air inlet cavity is connected with the high-pressure inflation valve, and the other end of the air inlet cavity is connected with the pill accelerating cavity; the air inlet cavity air release valve is connected with the air inlet cavity through a pipeline; one end of the reset cavity is connected with the pill accelerating cavity, and the other end of the reset cavity is an outlet flange; the reset cavity air inlet valve and the air release valve are connected with the reset cavity through pipelines.
The pellet clamp is formed by processing Peek materials, the outside of the pellet clamp is of a near-elliptic structure, the structure of the pellet clamp is a thick section and a thin section, the thick section is a sliding end, the thin section is a pellet cavity, the outside of the thin section is provided with an isolation sealing ring structure, the air sealing between the air inlet cavity and the reset cavity can be realized after the pellet clamp is ejected to a final position, and the pellet clamp can be guaranteed to reciprocate only left and right in the pellet accelerating cavity and cannot rotate due to the external near-elliptic structure. The pellet clamp has an internal structure of a hollow round platform with a slightly larger inlet, and a feeding hole is formed in the side surface of the pellet clamp, so that solid particle pellets can fall into the pellet clamp from the pellet feeding pipe and the feeding hole.
The pill accelerating cavity is of a cylindrical structure with a hollow inside, the hollow inside structure is consistent with the appearance of the pill clamp, the pill accelerating cavity is of a near-elliptical structure, the size of the pill accelerating cavity is the same as that of the pill clamp, the difference is positive and negative tolerance, the pill clamp can conveniently slide left and right in the pill accelerating cavity and cannot rotate, the side surface of the pill clamp is ensured to be provided with an opening upwards all the time, and only a very small amount of driving gas can flow out through the gap between the pill clamp and the pill clamp.
Meanwhile, the invention provides a piston type projectile injection method for plasma fracture protection, which is characterized by comprising the following operation steps:
(1) Closing the valve connected with the outlet flange, the ball feeding pipe valve and the air inlet cavity air discharging valve.
(2) And opening an air inlet valve of the reset cavity, slowly filling a certain amount of high-pressure air into the reset cavity through the air inlet valve, and moving the pellet clamp to the other end of the pellet accelerating cavity under the pushing of the high-pressure air until the pellet clamp touches the reset limiting mechanism due to the pressure difference between the two ends of the pellet clamp, wherein the feed inlet of the pellet clamp is just aligned with the pellet feeding pipe.
(3) And opening a feeding valve, then throwing the pellet into the pellet clamp from a pellet feeding pipe, and closing the feeding pipe valve after feeding is finished.
(4) And opening a reset cavity air release valve, and pumping out the air in the reset cavity by using an air extractor group.
(5) And opening a valve at the pellet outlet flange, and then rapidly filling a certain amount of high-pressure gas into the air inlet cavity by using the high-pressure charging valve, wherein the pellet clamp can carry the pellet pellets inside to move to the other side of the pellet accelerating cavity at a high speed under the driving of the high-pressure gas.
(6) When the isolating sealing ring of the pellet clamp touches the reset cavity, the pellet clamp is blocked and cannot continue to move forwards, and the pellet in the pellet clamp can continue to move forwards at high speed due to inertia, so that the pellet is ejected at high speed. Because the bullet clip is provided with the isolation sealing ring, the bullet clip can be sealed with the reset cavity under the pressure action of high-pressure gas, and the high-pressure driving gas cannot enter the reset cavity, so that the high-pressure driving gas cannot enter plasma along with the bullet, and only the bullet is injected into the plasma.
(7) Opening the air inlet cavity air release valve to release the high-pressure propelling gas in the air inlet cavity and the pill accelerating cavity.
(8) Closing the outlet flange valve, the pellet feeding pipe valve and the air inlet cavity air release valve. Opening the reset cavity air inlet valve, then filling a certain amount of high-pressure gas into the reset cavity, at this moment, the pellet clamp will move to the other end of the pellet accelerating cavity under the pushing of the high-pressure gas until touching the reset limiting mechanism, at this moment, the feed inlet of the pellet clamp is just aligned with the pellet feeding pipe, and the next feeding and launching are waited, so that the complete pellet launching is completed.
According to the invention, by adopting a high-pressure gas driving and piston type working principle, the high-efficiency acceleration of the pellets and the effective isolation and removal of driving gas are realized, so that the system structure is greatly simplified, a large Roots pump unit is not required to be used as a differential pumping system, higher driving air pressure can be adopted, the pellets can obtain higher ejection speed, and a high-efficiency impurity injection tool is provided for a plasma fracture relief experiment.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1, a piston type pellet injection system applied to plasma fracture protection comprises an air inlet cavity 13, a pellet acceleration cavity 4, a reset cavity 14, an air inlet flange 1, an air release pipe 2, a pellet feeding pipe 3, a pellet clamp 5, a reset air pipe 6, an isolation sealing ring 7, an outlet flange 8, a reset limiting mechanism 9, an air inlet cavity air release valve 10, a reset cavity air inlet valve 11 and a reset cavity air release valve 12. The pill accelerating cavity 4 is a sliding track of the pill clamp 5, one end of the pill accelerating cavity is connected with the air inlet cavity 13, and the other end is connected with the reset cavity 14; the pellet clamp 5 is positioned in the pellet accelerating cavity 4, and the pellet clamp 5 can slide left and right in the pellet accelerating cavity 4; the pellet feeding pipe 3 is communicated with the pellet accelerating cavity 4 through a side surface opening of the pellet accelerating cavity 4; one end of the air inlet cavity 13 is connected with a high-pressure inflation valve, and the other end is connected with the pill accelerating cavity 4; the air inlet cavity air release valve 10 is connected with the air inlet cavity 13 through the air release pipe 2; one end of the reset cavity 14 is connected with the pill accelerating cavity 4, and the other end is provided with an outlet flange 8; the reset chamber intake valve 11 and the air release valve 12 are connected with the reset chamber 14 through the reset air pipe 6. The pellet clamp 5 is formed by processing Peek materials, the outside of the pellet clamp 5 is of a near-elliptic structure, the structure is a thick section and a thin section, the thick section is a sliding end, the thin section is a pellet cavity, the isolation sealing ring 7 is arranged outside the thin section, the air sealing between the air inlet cavity 13 and the reset cavity 14 can be realized after the pellet clamp 5 is ejected to a final position, and the pellet clamp 5 can only reciprocate left and right in the pellet accelerating cavity 4 and cannot rotate due to the near-elliptic structure. The pellet clamp 5 has a hollow round platform structure with a large inner hole and a small outer hole, and a feeding hole is formed in the side face of the pellet clamp, so that solid particle pellets can fall into the pellet clamp 5 from the pellet feeding pipe 3 and the feeding hole. The pill accelerating cavity 4 is of a cylindrical structure with a hollow inside, the hollow inside is consistent with the appearance of the pill clamp 5, the pill accelerating cavity is of a near-elliptical structure, the size of the pill accelerating cavity is the same as that of the pill clamp, the difference is positive and negative tolerance, the pill clamp 5 can conveniently slide left and right in the pill accelerating cavity and cannot rotate, the side surface of the pill clamp 5 is always provided with an upward hole, and the small amount of driving gas can flow out through the gap between the pill clamp and the pill clamp
The invention also provides a piston type projectile injection method for plasma fracture protection, which comprises the following specific steps:
(1) And closing the valve connected with the outlet flange 8, the valve of the pellet feeding pipe 3 and the air inlet cavity air release valve 10.
(2) The reset cavity air inlet valve 11 is opened, a certain amount of high-pressure air is slowly filled into the reset cavity 14 through the air inlet valve 11, and the pellet clamp 5 moves towards the other end of the pellet accelerating cavity 4 under the pushing of the high-pressure air due to the pressure difference between the two ends of the pellet clamp 5 until the pellet clamp contacts the reset limiting mechanism 9, and at the moment, the feed inlet of the pellet clamp 5 is exactly aligned with the pellet feeding pipe 3.
(3) And opening a feeding valve, then throwing the pellet into the pellet clamp 5 from the pellet feeding pipe 3, and closing the valve of the feeding pipe 3 after feeding is finished.
(4) The reset chamber purge valve 12 is opened and the gas inside the reset chamber 14 is evacuated by the pump stack.
(5) The valve at the pellet outlet flange 8 is opened, then a certain amount of high-pressure gas is rapidly filled into the air inlet cavity 13 by using the high-pressure charging valve, and the pellet clamp 5 can carry the pellet pellets inside to move to the other side of the accelerating cavity 4 at high speed under the driving of the high-pressure gas.
(6) When the isolating seal ring 7 of the pellet clamp 5 hits the reset cavity 14, the pellet clamp 5 is blocked and cannot move forward continuously, and the pellet in the pellet clamp 5 moves forward at high speed due to inertia, so that the pellet is ejected at high speed. Because the pellet clamp 5 is provided with the isolation sealing ring 7, the pellet clamp 5 can be sealed with the reset cavity 14 under the pressure of high-pressure gas, and the high-pressure driving gas cannot enter the reset cavity 5, so that the high-pressure driving gas cannot enter plasma along with the pellets, and only the pellets are injected into the plasma.
(7) The air inlet cavity air release valve 10 is opened, and the high-pressure propelling gas in the air inlet cavity 13 and the projectile accelerating cavity 4 is discharged.
(8) And closing the valve of the outlet flange 8, the valve of the pellet feeding pipe 3 and the air inlet cavity air release valve 10. The reset cavity air inlet valve 11 is opened, then a certain amount of high-pressure gas is filled into the reset cavity 14, at the moment, the pellet clamp 5 moves towards the other end of the pellet accelerating cavity 4 under the pushing of the high-pressure gas until the pellet clamp contacts the reset limiting mechanism 9, at the moment, the feed inlet of the pellet clamp 5 is just aligned with the pellet feeding pipe 3, and the next feeding and launching are waited, so that the complete pellet launching is completed.
Claims (4)
1. A piston type projectile injection system for plasma fracture protection, characterized in that: the device comprises an air inlet cavity, a pill accelerating cavity, a reset cavity, an air inlet flange, an air release pipe, a feeding pipe, a pill clamp, a reset air pipe, an isolation sealing ring, an outlet flange, a reset limiting mechanism, an air inlet cavity air release valve, a reset cavity air inlet valve and a reset cavity air release valve, wherein the pill accelerating cavity is a sliding track of the pill clamp, one end of the pill accelerating cavity is connected with the air inlet cavity, and the other end of the pill accelerating cavity is connected with the reset cavity; the pellet clamp is positioned in the pellet accelerating cavity, and can slide left and right in the pellet accelerating cavity; the pellet feeding pipe is communicated with the pellet accelerating cavity through a side surface opening of the pellet accelerating cavity; one end of the air inlet cavity is connected with the high-pressure inflation valve, and the other end of the air inlet cavity is connected with the pill accelerating cavity; the air inlet cavity air release valve is connected with the air inlet cavity through a pipeline; one end of the reset cavity is connected with the pill accelerating cavity, and the other end of the reset cavity is an outlet flange; the reset cavity air inlet valve and the air release valve are connected with the reset cavity through pipelines.
2. A piston type projectile injection system for plasma fracture protection as claimed in claim 1 wherein: the pellet clamp is formed by processing Peek materials, the exterior of the pellet clamp is of an oval structure, the structure of the pellet clamp is a section of thick and a section of thin, the thick section is a sliding end, the thin section is a pellet cavity, an isolation sealing ring structure is arranged outside the thin section, the air sealing between an air inlet cavity and a reset cavity can be realized after the pellet clamp is ejected to a final position, the pellet clamp is guaranteed to be in a pellet accelerating cavity by an external near-oval structure, the pellet clamp can only reciprocate left and right and cannot rotate, the internal structure of the thin end of the pellet clamp is of a hollow round platform structure with a slightly larger inlet, a feeding hole is formed in the side face of the pellet clamp, and solid pellet falls into the pellet clamp from the pellet feeding pipe and the feeding hole.
3. A piston type projectile injection system for plasma fracture protection as claimed in claim 1 wherein: the pill accelerating cavity is of a cylindrical structure with a hollow inside, the hollow inside structure is consistent with the appearance of the pill clamp, the pill accelerating cavity is of an elliptic structure, the size of the pill accelerating cavity is the same as that of the pill clamp, the difference is positive and negative tolerance, the pill clamp can slide left and right in the pill accelerating cavity conveniently and cannot rotate, the side surface of the pill clamp is guaranteed to be provided with an opening upwards all the time, and only a very small amount of driving gas can flow out through the gap between the pill clamp and the pill clamp.
4. A piston type projectile injection method for plasma fracture protection as claimed in any one of claims 1-3, comprising the steps of:
(1) Closing a valve connected with an outlet flange, a ball feeding pipe valve and an air inlet cavity air release valve;
(2) An air inlet valve of the reset cavity is opened, a certain amount of high-pressure air is slowly filled into the reset cavity through the air inlet valve, and as the pressure difference exists at the two ends of the pellet clamp, the pellet clamp moves towards the other end of the pellet accelerating cavity under the pushing of the high-pressure air until the pellet clamp touches the reset limiting mechanism, and at the moment, a feed inlet of the pellet clamp is just aligned with the pellet feeding pipe;
(3) Opening a feeding valve, then throwing the pellet into a pellet clamp from a pellet feeding pipe, and closing the feeding pipe valve after feeding is finished;
(4) Opening a reset cavity air release valve, and pumping out air in the reset cavity by using an air pump set;
(5) Opening a valve at a pellet outlet flange, and then rapidly filling a certain amount of high-pressure gas into the air inlet cavity by using a high-pressure charging valve, wherein the pellet clamp can carry the pellet pellets inside to move to the other side of the pellet accelerating cavity at high speed under the driving of the high-pressure gas;
(6) When the isolating sealing ring of the pellet clamp touches the reset cavity, the pellet clamp is blocked and cannot move forwards continuously, and particle pellets in the pellet clamp move forwards at high speed due to inertia and are ejected at high speed;
(7) Opening an air inlet cavity air release valve to release high-pressure propellant gas in the air inlet cavity and the pellet accelerating cavity;
(8) Closing the outlet flange valve, the ball feeding pipe valve, the air inlet cavity air release valve, opening the reset cavity air inlet valve, then filling a certain amount of high-pressure gas into the reset cavity, at the moment, the ball clamp moves to the other end of the ball accelerating cavity under the pushing of the high-pressure gas until touching the reset limiting mechanism, and at the moment, the feed inlet of the ball clamp is exactly aligned with the ball feeding pipe and waits for the next feeding emission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310676127.4A CN116592696A (en) | 2023-06-08 | 2023-06-08 | Piston type projectile injection system and method for plasma fracture protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310676127.4A CN116592696A (en) | 2023-06-08 | 2023-06-08 | Piston type projectile injection system and method for plasma fracture protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116592696A true CN116592696A (en) | 2023-08-15 |
Family
ID=87600788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310676127.4A Pending CN116592696A (en) | 2023-06-08 | 2023-06-08 | Piston type projectile injection system and method for plasma fracture protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116592696A (en) |
-
2023
- 2023-06-08 CN CN202310676127.4A patent/CN116592696A/en active Pending
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