CN-122028287-A - Air exhaust limiter structure for star simulator device and star simulator device

CN122028287ACN 122028287 ACN122028287 ACN 122028287ACN-122028287-A

Abstract

The application provides an air extraction limiter structure for a star simulator device and the star simulator device, and relates to the field of magnetic confinement plasma devices, wherein the air extraction limiter structure comprises a limiter component arranged in a vacuum chamber and close to a plasma boundary position, and a getter pump module arranged on one side of the limiter component, which is opposite to the plasma, and the getter pump module is communicated with a limiter area through an air extraction channel and is used for carrying out non-flowing adsorption capture on neutral gas entering from the plasma boundary; the getter pump module is integrated near the limiter component in a compact and modularized mode to realize local air extraction near a particle source, the structure does not depend on a liquid helium or liquid nitrogen pipeline, a cold screen and other low-temperature systems as main air extraction means, the operation and maintenance are simplified, the device is suitable for long-term steady-state operation requirements of a star simulator device, and the device has potential engineering adaptability under tritium related application scenes and device conditions with neutron irradiation.

Inventors

ZHANG ZONGYAO
Xu Runlai
LI YANTONG
LU HONGKE
LU YUANZHEN
NING HAOYAN

Assignees

安徽蔚蓝恒星聚变技术有限公司
北京蔚蓝恒星科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260326

Claims (10)

1. An exhaust restrictor structure for a star-like device, comprising: A limiter member disposed inside the vacuum chamber of the star simulator device and adjacent to the plasma boundary position, forming a limiter region for limiting the interaction of the plasma and the solid wall surface; A getter pump module disposed on a side of the restrictor member facing away from the plasma, the getter pump module having at least one pumping channel in communication with the restrictor region; The getter pump module is used for carrying out non-flowing adsorption capturing on neutral gas entering from the pumping channel so as to realize particle discharge near a plasma boundary position in the star simulator device.
2. The suction limiter structure for a star simulator apparatus of claim 1 wherein the limiter member comprises a plurality of limiter units; the plurality of limiter units are arranged in a segmented manner along the circumferential direction of the plasma boundary position so as to adapt to the spatial characteristics of the three-dimensional non-axisymmetric magnetic configuration of the star simulator device.
3. The exhaust restrictor structure for a star-like device of claim 1, wherein the exhaust channel is disposed in an area not accessible to the direct line of sight of the plasma for directing neutral gas generated by the interaction of the plasma with the restrictor member into the getter pump module.
4. A suction restrictor structure for a star device as claimed in claim 3, characterized in that the suction channel is provided inside the restrictor member; Or alternatively The suction channel is disposed within a gap region formed between the restrictor member and the support member.
5. The suction limiter arrangement for a star simulator apparatus of claim 4 wherein the getter pump module is embedded or attached to the back side of the limiter member; Or the getter pump module is attached to a support member.
6. The suction limiter arrangement for a star simulator apparatus of claim 5 wherein the getter pump module is assembled with the limiter member or support member in a removable connection.
7. The suction limiter structure for a star simulator apparatus of claim 1, 5 or 6 wherein the getter pump module comprises at least one getter pump unit; At least one getter pump unit is arranged in the circumferential direction of the restrictor member for enhancing the overall particle discharge capacity of the restrictor region.
8. The suction limiter structure for a star simulator apparatus of claim 7 wherein the getter pump unit comprises a getter carrier and a non-evaporative getter material; The non-evaporable getter material is arranged on a getter carrier.
9. The suction limiter arrangement for a star simulator device of claim 8 wherein the getter pump unit is configured with an electrical heating device for getter material regeneration.
10. A star simulator device comprising the suction limiter structure for a star simulator device according to any one of claims 1 to 9.

Description

Air exhaust limiter structure for star simulator device and star simulator device Technical Field The invention relates to the technical field of magnetic confinement plasma devices, in particular to an air extraction limiter structure for a star simulator device and the star simulator device. Background The star simulator is an important magnetic confinement plasma device, realizes plasma confinement through a three-dimensional non-axisymmetric magnetic field, and has the characteristics of large steady-state operation potential, no need of plasma current and the like. However, the three-dimensional magnetic shape of the star simulator device is complex, the number of components in the vacuum chamber is large, and the installation space for plasma boundary components and the air extraction structure is limited. During the operation of the star simulator, the limiter serves as an important boundary component for the interaction of plasma and the solid wall surface, and plays roles in limiting the boundary position of the plasma and bearing the bombardment of particles. The restrictor region is also a critical location for plasma boundary particle discharge, the particle discharge efficiency of which directly affects the neutral gas distribution inside the device and the plasma operating performance. In the existing star simulator device, particle discharge in a boundary area usually depends on an air extraction system arranged outside a vacuum chamber or far away from a plasma boundary position, particles can be discharged through a longer conveying path, and diffusion and backflow are easy to occur in the vacuum chamber, so that particle discharge efficiency is reduced. On the other hand, the traditional scheme of relying on a cryogenic pump to realize high pumping speed often needs to be provided with a liquid helium or liquid nitrogen pipeline, a cold screen and related cryogenic system components, and has the advantages of large system volume, complex structure, high operation and maintenance cost and higher arrangement difficulty under the condition that the space of the star simulator device is limited. In addition, as the star simulator device develops to a long pulse even steady state running direction, the boundary air extraction structure also needs to have good engineering adaptability so as to adapt to tritium related application scenes and running environments with neutron irradiation, and the existing air extraction scheme still has certain limitations in the aspects of structural compactness, installation flexibility, long-term running maintenance and the like. Therefore, there is a need for an exhaust restrictor structure suitable for use in a star simulator device that is capable of achieving particle ejection near the restrictor, that is compact, and that is simplified in operation and maintenance, to meet the engineering requirements of the star simulator device for plasma boundary particle control under spatially constrained conditions. Disclosure of Invention The invention aims to provide an air extraction limiter structure for a star simulator device and the star simulator device, which are used for solving the problems that in the existing star simulator device, the space of a plasma boundary area is limited, the three-dimensional magnetic position is complex, a traditional air extraction system is difficult to arrange near a limiter, and the discharge efficiency of boundary particles is limited. With the above object in view, in a first aspect, the present application provides an air extraction limiter structure for a star simulator device, comprising: A limiter member disposed inside the vacuum chamber of the star simulator device and adjacent to the plasma boundary position, forming a limiter region for limiting the interaction of the plasma and the solid wall surface; A getter pump module disposed on a side of the restrictor member facing away from the plasma, the getter pump module having at least one pumping channel in communication with the restrictor region; The getter pump module is used for carrying out non-flowing adsorption capturing on neutral gas entering from the pumping channel so as to realize particle discharge near a plasma boundary position in the star simulator device. In one embodiment, the restrictor member comprises a plurality of restrictor units; the plurality of limiter units are arranged in a segmented manner along the circumferential direction of the plasma boundary position so as to adapt to the spatial characteristics of the three-dimensional non-axisymmetric magnetic configuration of the star simulator device. In one embodiment, the bleed passage is disposed in a region not accessible to the direct line of sight of the plasma for directing neutral gas generated by the interaction of the plasma with the restrictor member into the getter pump module. In one embodiment, the bleed passage is disposed inside the restrictor member; Or alternatively The suctio