Active cooling hidden radio frequency discharge cavity

Abstract

The utility model relates to the technical field of radio frequency discharge cavities, in particular to an active cooling hidden radio frequency discharge cavity. According to the technical scheme, the device comprises a double-layer glass cylinder with a cavity formed in the curved surface and a coil arranged in the cavity in the double-layer glass cylinder; the double-layer glass cylinder is provided with a cooling assembly used for cooling the double-layer glass cylinder and the coil at the same time. The cooling assembly comprises a water inlet pipeline which is fixedly connected to the lateral lower part of the double-layer glass cylinder, and a water outlet pipeline which is fixedly connected to the lateral upper part of the double-layer glass cylinder. And the water inlet pipeline and the water outlet pipeline are communicated with the cavity of the double-layer glass cylinder. According to the utility model, simultaneous cooling of the copper coil and the discharge cavity is realized, the coil is hidden in the double-layer glass cylinder, external interference is reduced, and the design of the double-layer glass cylinder enables the contact area between the cooling water and the copper coil as well as between the cooling water and the discharge cavity to be minimized, thereby reducing the negative influence of the cooling water on the radio frequency coupling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of radio frequency discharge cavity technology, and in particular to an actively cooled concealed radio frequency discharge cavity. Background Technology

[0002] The discharge cavity plays a crucial role in the neutron source, primarily used to generate and maintain plasma, which then produces neutrons through nuclear reactions. During this process, a copper coil connected to a radio frequency (RF) power supply generates an induced magnetic field within the discharge cavity. The discharge cavity then ionizes the gas within it using a high-frequency electromagnetic field, producing high-density plasma. This process generates a significant amount of heat, requiring active cooling. Traditional cooling methods separate the copper coil from the discharge cavity. While this method achieves some cooling, it cannot simultaneously cool both the coil and the discharge cavity. Furthermore, introducing a coolant between the coil and the discharge cavity significantly reduces the RF coupling efficiency, thereby decreasing the plasma density. Therefore, this application proposes an actively cooled, concealed RF discharge cavity. Utility Model Content

[0003] The purpose of this invention is to address the problem in the prior art that the discharge cavity cannot simultaneously cool the coil and the discharge cavity, and to propose an active cooling hidden radio frequency discharge cavity.

[0004] The technical solution of this utility model: an actively cooled, concealed radio frequency discharge cavity, comprising:

[0005] A double-layered glass tube with a curved surface and a cavity;

[0006] The coil is disposed in the cavity of the double-layered glass tube;

[0007] The double-layered glass tube is equipped with a cooling component for simultaneously cooling the double-layered glass tube and the coil.

[0008] Optionally, the cooling assembly includes an inlet pipe fixedly connected to the lower side of the double-layered glass cylinder, and an outlet pipe fixedly connected to the upper side of the double-layered glass cylinder.

[0009] Optionally, both the inlet and outlet water pipes are connected to the cavity of the double-layered glass tube.

[0010] Optionally, the two ends of the coil extend out of the outer layer of the double-layered glass tube, and the outer layer of the double-layered glass tube has two outer layer through holes for the coil to extend out, and the diameter of the outer layer through holes is 3.5mm.

[0011] Optionally, the inner layer of the double-layered glass tube has a diameter of 30 mm and a thickness of 5 mm, and the outer layer of the double-layered glass tube has a diameter of 50 mm and a thickness of 2 mm.

[0012] Optionally, the coil has a diameter of 3mm, an inner diameter of 40mm, and a height of 30mm. The coil is arranged in a spiral configuration, and the spacing is matched with the radio frequency to optimize the electromagnetic field distribution.

[0013] Optionally, the inlet pipe has a diameter of 4 mm and the outlet pipe has a diameter of 8 mm, forming a height difference to promote natural convection of cooling water from bottom to top.

[0014] Optionally, a gap is provided between the coil and the bottom inner wall of the double-layered glass tube.

[0015] Compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0016] (1) The outer layer of the double-layered glass tube is equipped with an inlet pipe and an outlet pipe for cooling water circulation, so as to achieve simultaneous cooling of the copper coil and the discharge cavity.

[0017] (2) The coil is installed between the inner and outer layers of the glass tube. The hidden design makes the overall structure more compact and suitable for miniaturized equipment. The coil is hidden inside the double-layer glass tube, which reduces external interference.

[0018] (3) The double-walled glass tube design allows the cooling water to flow mainly in the outer layer, reducing the impact of the cooling water on the radio frequency electric field. The double-walled glass tube design minimizes the contact area between the cooling water and the copper coil and discharge cavity, thereby reducing the negative impact of the cooling water on the radio frequency coupling efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an actively cooled, concealed radio frequency discharge cavity.

[0020] Reference numerals in the attached diagram: 1. Outlet pipe; 2. Double-layered glass cylinder; 3. Coil; 4. Inlet pipe. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Example

[0023] like Figure 1 As shown, the present invention proposes an active cooling concealed radio frequency discharge cavity, which includes a double-layer glass tube 2 with a cavity on a curved surface. The inner layer of the double-layer glass tube 2 has a diameter of 30 mm and a thickness of 5 mm, and the outer layer of the double-layer glass tube 2 has a diameter of 50 mm and a thickness of 2 mm.

[0024] A coil 3 is installed inside the cavity of the double-layered glass tube 2. The coil 3 is a copper coil with a cross-sectional diameter of 3mm. The coil 3 is arranged in a spiral with an inner diameter of 40mm and a height of 30mm. The spacing is matched with the radio frequency to optimize the electromagnetic field distribution.

[0025] Both ends of the coil 3 extend out of the outer layer of the double-layer glass tube 2. There is a gap between the coil 3 and the bottom inner wall of the double-layer glass tube 2. The outer layer of the double-layer glass tube 2 has two outer layer through holes for the coil 3 to extend out. The diameter of the outer layer through holes is 3.5mm. The coil 3 and the outer layer through holes of the double-layer glass tube 2 are laser welded. The welding is achieved by using a laser beam to locally heat and melt the surface of the double-layer glass tube 2 and the copper coil. The coil 3 extends out of the outer layer through holes to connect to the matching power supply.

[0026] like Figure 1 In this embodiment, a cooling assembly is provided on the double-layered glass tube 2 for simultaneously cooling the double-layered glass tube 2 and the coil 3. The cooling assembly includes a water inlet pipe 4 fixedly connected to the lower side of the double-layered glass tube 2 and a water outlet pipe 1 fixedly connected to the upper side of the double-layered glass tube 2 for circulating cooling water, thereby achieving active cooling of the coil 3 and the discharge cavity.

[0027] It is worth noting that both the inlet pipe 4 and the outlet pipe 1 are connected to the cavity of the double-layered glass cylinder 2. The diameter of the inlet pipe 4 is 4mm and the diameter of the outlet pipe 1 is 8mm, forming a height difference to promote the natural convection of cooling water from bottom to top.

[0028] Furthermore, the coil 3 is installed between the inner and outer layers of the double-layered glass tube 2. The concealed design makes the overall structure more compact and suitable for miniaturized equipment. The coil is hidden inside the double-layered glass tube, reducing external interference.

[0029] Furthermore, the design of the double-layered glass tube 2 ensures that the cooling water primarily flows in the outer layer, reducing the impact of the cooling water on the radio frequency electric field. The double-layered glass tube 2 design also minimizes the contact area between the cooling water and the coil 3 and the discharge cavity, thereby reducing the negative impact of the cooling water on the radio frequency coupling efficiency.

[0030] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An actively cooled concealed radio frequency discharge cavity, characterized in that, include: A double-layered glass tube with a cavity on a curved surface (2); The coil (3) is disposed in the cavity of the double-layered glass tube (2); A cooling assembly for simultaneously cooling the double-layered glass cylinder (2) and the coil (3) is provided on the double-layered glass cylinder (2).

2. The actively cooled concealed radio frequency discharge cavity according to claim 1, characterized in that, The cooling assembly includes an inlet pipe (4) fixedly connected to the lower side of the double-layered glass cylinder (2), and an outlet pipe (1) fixedly connected to the upper side of the double-layered glass cylinder (2).

3. The actively cooled concealed radio frequency discharge cavity according to claim 2, characterized in that, Both the inlet pipe (4) and the outlet pipe (1) are connected to the cavity of the double-layered glass cylinder (2).

4. The actively cooled concealed radio frequency discharge cavity according to claim 1, characterized in that, The coil (3) extends from both ends into the outer layer of the double-layer glass tube (2), and the outer layer of the double-layer glass tube (2) has two outer through holes for the coil (3) to extend out.

5. The actively cooled concealed radio frequency discharge cavity according to claim 4, characterized in that, The inner layer of the double-layer glass tube (2) has a diameter of 30 mm and a thickness of 5 mm, while the outer layer of the double-layer glass tube (2) has a diameter of 50 mm and a thickness of 2 mm.

6. The actively cooled concealed radio frequency discharge cavity according to claim 1, characterized in that, The coil (3) is arranged in a spiral.

7. The actively cooled concealed radio frequency discharge cavity according to claim 1, characterized in that, A gap is provided between the coil (3) and the bottom inner wall of the double-layer glass tube (2).

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