Method and device for enhancing magnetic disturbance based on gas injection to inhibit escape current

A gas injection and disturbance suppression technology, applied in the direction of reducing greenhouse gases, nuclear power generation, climate sustainability, etc., can solve problems such as the inability to reliably suppress escape current, and achieve the effect of enhancing transportation loss, ensuring safety, and avoiding damage.

Inactive Publication Date: 2018-07-17
CHENGDU UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Therefore, in experiments using RMP coils to apply magnetic disturbances to suppress escape currents on different tokamak devices, the experimental results obtained are quite different, and the formation of escape currents during rupture cannot be reliably suppressed.
[0004] In

Method used

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  • Method and device for enhancing magnetic disturbance based on gas injection to inhibit escape current
  • Method and device for enhancing magnetic disturbance based on gas injection to inhibit escape current
  • Method and device for enhancing magnetic disturbance based on gas injection to inhibit escape current

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Embodiment 1

[0030] For this implementation, please refer to figure 1 , figure 2 and Figure 4 .

[0031] The method for suppressing escape current based on gas injection enhanced magnetic disturbance provided in this embodiment specifically includes the following steps:

[0032] 101. Install a gas injection device on the tokamak vacuum chamber so that the gas injection device is as close as possible to the plasma; specifically, in a specific implementation, there can be one or at least two gas injection devices, and the installation location can be in Any circumferential or polar position of the vacuum chamber. When more than two gas injection devices are provided, the gas injection devices are evenly installed at any circumferential or polar position of the vacuum chamber. The gas injection device is as close as possible to the plasma, which can reduce the distance of the gas from the gas injection device to the plasma, and shorten the time required to enhance the plasma magnetic dis...

Embodiment 2

[0042] Please refer to image 3 , this embodiment provides a Tokamak gas injection device that realizes the method of enhancing magnetic disturbance and suppressing escape current based on gas 7 injection, the gas injection device includes a gas storage component 3, a switch valve 4, an injection nozzle 5, and a gas storage component 3 Located outside the vacuum chamber 1, the gas storage part 3 is as close as possible to the vacuum chamber to shorten the injection distance of the gas from the gas storage part 3 to the plasma 2, the injection nozzle 5 is located in the vacuum chamber, and the switch valve 4 is connected to the gas storage part 3 and the injection nozzle 5, and the trigger end of the switch valve 4 is connected to the tokamak central control system 6, the tokamak central control system 6 is the central control system of the existing tokamak device, the gas storage unit 3 Tokamak working gas 7 or inert gas 7 is stored in it; wherein, the gas injection device is ...

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Abstract

The invention discloses a method and device for enhancing magnetic disturbance based on gas injection to inhibit an escape current. The method comprises the steps: mounting a gas injection device on aTokamak vacuum chamber; loading gas to be injected into the gas injection device in advance; connecting a trigger control end of a switching valve of the gas injection device to a Tokamak central control system; when a plasma stably operates, controlling the Tokamak central control system not to trigger the switching valve and the gas injection device not to be started; and when the plasma is tobe disrupted, controlling the Tokamak central control system to trigger the switching valve to start the gas injection device, and making the gas injection device inject a gas into the plasma. The gasinjection device comprises a gas storage part, the switching valve and an injection nozzle. According to the method, the gas is injected into the plasma when the plasma is to be disrupted, and the gas entering the plasma disturbs a local current of the plasma to result in magnetic field disturbance, so that the formation of the escape current is inhibited, and the damage of the escape current tothe device is avoided.

Description

technical field [0001] The invention belongs to the field of protection against magnetic confinement nuclear fusion plasma rupture, and in particular relates to a method and device for enhancing the magnetic field disturbance of tokamak plasma by gas injection, causing radial transport loss of runaway electrons, and suppressing the formation of escape current during rupture. Background technique [0002] The threat to the safe operation of the device caused by the rupture of the tokamak plasma is one of the key factors hindering the development of magnetic confinement fusion. The plasma current of the large-scale tokamak device reaches the order of megaamperes, the temperature of the plasma reaches 100 million degrees Celsius, and the internal energy and electromagnetic energy stored in the plasma reach the order of hundreds of megajoules. When the tokamak breaks up, the rapid decrease of the plasma current will cause the rapid increase of the electric field around the plasm...

Claims

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Application Information

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IPC IPC(8): G21B1/11G21B1/05
CPCG21B1/057G21B1/11Y02E30/10
Inventor 陈忠勇冯威杨琨
Owner CHENGDU UNIV
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