Low-temperature ultrasonic molecular beam injection system suitable for fusion device

Abstract

The utility model relates to a low-temperature ultrasonic molecular beam injection system suitable for a fusion device. The system comprises a low-temperature gas storage tank with a double-layer structure, a pulse electromagnetic valve and a Laval nozzle. The low-temperature gas storage tank is composed of an inner tank body and an outer tank body, the inner tank body is used for storing injected gas, and the outer tank body is used for maintaining a low-temperature state. The pulse electromagnetic valve is used for controlling injection of gas, and the Laval nozzle is used for accelerating the gas and injecting the gas into the vacuum cavity of the fusion device. A liquid nitrogen cooling mode is adopted, a low-temperature ultrasonic molecular beam injection system is formed, and the feeding efficiency after particles are injected into the Tokamak device can be effectively improved by utilizing the cluster effect of the low-temperature particles.

Description

Technical Field

[0001] The utility model relates to the technical field of fusion device feeding, in particular to a low-temperature ultrasonic molecular beam injection system suitable for fusion devices, and is used for gas injection in fusion devices such as tokamaks. Background Art

[0002] In the field of fusion devices, ultrasonic molecular beam injection is widely used as a means of feeding. Currently, the fusion field uses ultrasonic molecular beam injection of room temperature and high-pressure gas. However, as the parameters of tokamak devices are further improved, the feeding efficiency of this type of ultrasonic molecular beam injection system will drop rapidly, which will directly affect the feeding effect. Summary of the Invention

[0003] In order to solve the problem of low charging efficiency of the current ultrasonic molecular beam injection system in high-parameter tokamak devices, the utility model provides a low-temperature ultrasonic molecular beam injection system suitable for fusion devices, which improves the clustering effect of gas particles by low temperature, further improves the charging efficiency, and realizes more effective charging in high-parameter tokamak devices.

[0004] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0005] A low-temperature ultrasonic molecular beam injection system suitable for a fusion device, comprising: a double-layered low-temperature gas storage tank, a pulse solenoid valve, and a Laval nozzle;

[0006] The double-layer cryogenic gas storage tank comprises an inner tank body and an outer tank body that are nested with each other, wherein the injection gas storage tank serves as the inner tank body for storing the injection gas, and the liquid nitrogen storage tank serves as the outer tank body for maintaining the low temperature state of the injection gas storage tank;

[0007] The pulse solenoid valve is connected to the injection gas storage tank of the double-layer low-temperature gas storage tank through a pipeline and is used to control the gas injection of the low-temperature ultrasonic molecular beam injection system;

[0008] The Laval nozzle is connected to the outlet of the pulse electromagnetic valve, and the gas is accelerated by the Laval nozzle and finally injected into the vacuum chamber of the fusion device.

[0009] Furthermore, the liquid nitrogen storage tank uses a wall made of thermal insulation material.

[0010] Furthermore, the injected gas storage tank is made of stainless steel and can withstand high-pressure gas storage greater than 100 bar.

[0011] Furthermore, the throat diameter of the Laval nozzle is 0.5 mm.

[0012] The beneficial effects of the present invention are:

[0013] Liquid nitrogen cooling is used to form a low-temperature ultrasonic molecular beam injection system, which utilizes the clustering effect of low-temperature particles to effectively improve the feeding efficiency after the particles are injected into the tokamak device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of a low-temperature ultrasonic molecular beam injection system suitable for a fusion device. DETAILED DESCRIPTION

[0015] The present invention is described in detail below with reference to the accompanying drawings and specific implementation methods.

[0016] like Figure 1 As shown, the low-temperature ultrasonic molecular beam injection system of the present invention includes a double-layer cryogenic gas storage tank 1, a fast-response pulse solenoid valve 2, and a Laval nozzle 3, which are connected in sequence. The double-layer cryogenic gas storage tank 1 includes an inner tank body and an outer tank body that overlap each other. The inner tank body is the injection gas storage tank 4, which is made of stainless steel and can withstand high pressures greater than 100 bar. The outer tank body is the liquid nitrogen storage tank 5, which is equipped with a liquid nitrogen inlet for adding liquid nitrogen to maintain the low temperature of the injection gas storage tank 4. The outer tank body of the cryogenic gas storage tank 1 is made of insulating material to reduce heat dissipation from the liquid nitrogen.

[0017] Cryogenic gas storage tank 1 is connected via a pipe to the inlet of pulse solenoid valve 2, which controls the injection of gas from injection gas storage tank 4. A Laval nozzle 3, connected to the outlet of pulse solenoid valve 2, accelerates the gas and injects it into the vacuum chamber of the fusion device, achieving the desired charging effect. A spring is installed at the top of the pulse solenoid valve 2 cavity, and the throat aperture of Laval nozzle 3 is 0.5 mm, enabling the acceleration of high-pressure gas.

[0018] The low-temperature ultrasonic molecular beam injection system of the utility model can quickly respond and accurately control the injection of gas, and works in a high-precision and low-temperature environment, thereby greatly improving the feeding efficiency and the stability of the system.

[0019] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A low-temperature ultrasonic molecular beam injection system suitable for a fusion device, characterized in that: Including double-layer structure of cryogenic gas storage tank, pulse solenoid valve, Laval nozzle; The double-layer cryogenic gas storage tank comprises an inner tank body and an outer tank body that are nested with each other, wherein the injection gas storage tank serves as the inner tank body for storing the injection gas, and the liquid nitrogen storage tank serves as the outer tank body for maintaining the low temperature state of the injection gas storage tank; The pulse solenoid valve is connected to the injection gas storage tank of the double-layer low-temperature gas storage tank through a pipeline and is used to control the gas injection of the low-temperature ultrasonic molecular beam injection system; The Laval nozzle is connected to the outlet of the pulse electromagnetic valve, and the gas is accelerated by the Laval nozzle and finally injected into the vacuum chamber of the fusion device.

2. A low-temperature ultrasonic molecular beam injection system suitable for a fusion device according to claim 1, characterized in that: Liquid nitrogen storage tanks use insulating material walls.

3. The low-temperature ultrasonic molecular beam injection system suitable for a fusion device according to claim 1, characterized in that: The injected gas storage tank is made of stainless steel and can withstand high-pressure gas storage greater than 100 bar.

4. A low-temperature ultrasonic molecular beam injection system suitable for a fusion device according to claim 1, characterized in that: The throat diameter of the Laval nozzle is 0.5 mm.

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