Anti-breakdown magnetron antenna sealing cover

Abstract

The utility model discloses an anti-breakdown magnetron antenna sealing cover, which belongs to the technical field of magnetrons and comprises a cover body, the cover body is composed of a side surrounding cylinder and a cover plate, the cover plate is arranged at one end of the side surrounding cylinder to form a cylinder body with an opening at one end, the length of the side surrounding cylinder is slightly longer than that of a metal part of a microwave output wire of a magnetron, and the length of the side surrounding cylinder is larger than that of the metal part. The side surrounding cylinder and the cover plate are both made of insulating materials, and the cover body is bonded to a microwave output wire of the magnetron through glue with good insulating performance. During specific implementation, the cover body is arranged at the output antenna of the magnetron, so that the problem that the antenna cap is easily ignited and broken down when the load mismatch reflection power is too large or the humidity near the antenna is too large is solved; through the side surrounding cylinder with a proper thickness and the cover plate with a proper thickness, the working performance of the magnetron is not influenced, the breakdown strength of the antenna to the ground can be effectively increased, and the probability of ignition breakdown is reduced or even eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetrons, in particular to a breakdown-proof magnetron antenna sealing cover. Background Art

[0002] A magnetron is a device that converts electrical energy into microwave energy. In common applications, the magnetron antenna is inserted into a waveguide exciter to transmit the microwave energy converted by the magnetron to the load. When the load is mismatched and the reflected power is too large, or the humidity near the antenna is too high, it is easy to cause the antenna cap to spark and break down.

[0003] Therefore, it is necessary to design a breakdown-proof magnetron antenna cover. Utility Model Content

[0004] Purpose of the utility model: A breakdown-proof magnetron antenna cover to solve the above-mentioned problems existing in the prior art.

[0005] In order to solve the above technical problems, the utility model provides a breakdown-proof magnetron antenna cover, including a cover body, wherein the cover body is composed of a side enclosure tube and a cover plate, the cover plate is arranged at one end of the side enclosure tube to form a cylinder with one end open, the length of the side enclosure tube is slightly longer than the metal part of the microwave output wire of the magnetron, the side enclosure tube and the cover plate are both made of insulating material, and the cover body is bonded to the microwave output wire of the magnetron by glue with good insulating properties.

[0006] As a preferred solution, the thickness of the cover plate is between 4 mm and 6 mm.

[0007] As a preferred solution, the material of the side enclosure tube and the cover plate is one of ceramic with a purity of more than 92% and polytetrafluoroethylene.

[0008] As a preferred solution, the length of the side casing tube is specifically between 14mm and 20mm.

[0009] As a preferred solution, the thickness of the side casing is between 1 mm and 3 mm.

[0010] As a preferred solution, the cover is bonded to the microwave output wire of the magnetron by glue made of silicone material.

[0011] As a preferred solution, the diameter of the cross-section circle of the side enclosure tube is between 18 mm and 22 mm.

[0012] Beneficial effects: The present utility model relates to a magnetron antenna cover that prevents breakdown. Specifically, when in use, by installing the cover body at the output antenna of the magnetron, it solves the problem that when the load mismatch reflection power is too large or the humidity near the antenna is too high, it is easy to cause the antenna cap to break down due to arcing. By means of the side enclosure cylinder with an appropriate thickness and the cover plate with an appropriate thickness, the purpose of not affecting the working performance of the magnetron while effectively increasing the breakdown strength of the antenna to the ground and reducing or even eliminating the probability of breakdown due to arcing is achieved. Description of the Drawings

[0013] Figure 1 It is a schematic cross-sectional view of the present utility model installed on the antenna of a magnetron.

[0014] Figure 2 It is a schematic cross-sectional structure view of the present utility model.

[0015] In the figure, each reference numeral is: cover body 1, side enclosure cylinder 1.1, cover plate 1.2. Detailed Embodiment

[0016] In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present utility model, some well-known technical features in the art are not described.

[0017] The applicant's research found that a magnetron is a device that converts electrical energy into microwave energy. In normal applications, the magnetron antenna is inserted into the waveguide exciter to transmit the microwave energy converted by the magnetron to the load. When the load mismatch reflection power is too large or the humidity near the antenna is too high, it is easy to cause the antenna cap to break down due to arcing.

[0018] For this reason, the present utility model provides a magnetron antenna cover that prevents breakdown. Please refer to Figures 1 to 2 , this device includes a cover body 1. The cover body 1 is composed of a side enclosure cylinder 1.1 and a cover plate 1.2. The cover plate 1 is arranged at one end of the side enclosure cylinder 1.1 to form a cylinder with one end open. The length of the side enclosure cylinder 1.1 is slightly longer than the metal part of the microwave output wire of the magnetron. Both the side enclosure cylinder 1.1 and the cover plate 1.2 are made of insulating materials. The cover body 1 is bonded to the microwave output wire of the magnetron through glue with good insulation performance. Specifically, when implemented, by installing the cover body 1 at the output antenna of the magnetron, it solves the problem that when the load mismatch reflection power is too large or the humidity near the antenna is too high, it is easy to cause the antenna cap to break down due to arcing. By means of the side enclosure cylinder 1.1 with an appropriate thickness and the cover plate 1.2 with an appropriate thickness, the purpose of not affecting the working performance of the magnetron while effectively increasing the breakdown strength of the antenna to the ground and reducing or even eliminating the probability of breakdown due to arcing is achieved.

[0019] Preferably, the thickness of the cover plate 1.2 is between 4 mm and 6 mm. When the thickness of the cover plate 1.2 is less than 4 mm, the impedance performance is greatly affected. When the thickness of the cover plate 1.2 is greater than 6 mm, the matching impedance exceeds the appropriate application range and is irreversible. Therefore, the optimal thickness of the cover plate 1.2 is between 4 mm and 6 mm.

[0020] Preferably, the material of the side enclosure tube 1.1 and the cover plate 1.2 is one of ceramics with a purity of more than 92% and polytetrafluoroethylene. After research, it was found that the side enclosure tube 1.1 and the cover plate 1.2 use high-purity ceramics or polytetrafluoroethylene for the best effect, which solves the problem of sparking and breakdown of the magnetron antenna head.

[0021] Preferably, please refer to Figure 2 Mark b, the length of the side casing 1.1 is specifically between 14mm-20mm. When the length of the side casing 1.1 is not within the range of 14mm-20mm, it affects the power output of the magnetron.

[0022] Preferably, the thickness of the side casing 1.1 is between 1 mm and 3 mm. When the thickness of the side casing 1.1 is not within the range of 1 mm to 3 mm, the power output of the magnetron is affected.

[0023] Furthermore, the cover body 1 is bonded to the microwave output wire of the magnetron by using glue made of silicone material.

[0024] For further information, please refer to Figure 2 Mark a, the diameter of the cross-sectional circle of the side enclosure tube 1.1 is between 18mm-22mm. When the diameter of the cross-sectional circle of the side enclosure tube 1.1 is not within the range of 18mm-22mm, it affects the power output of the magnetron.

[0025] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A breakdown-proof magnetron antenna cover, characterized in that: include: Cover body; The cover body is composed of a side enclosure tube and a cover plate. The cover plate is arranged at one end of the side enclosure tube to form a cylinder with one end open. The length of the side enclosure tube is slightly longer than the metal part of the microwave output wire of the magnetron. The side enclosure tube and the cover plate are both made of insulating materials. The cover body is bonded to the microwave output wire of the magnetron by glue with good insulating properties.

2. The anti-breakdown magnetron antenna cover according to claim 1, characterized in that: The thickness of the cover plate is between 4 mm and 6 mm.

3. The anti-breakdown magnetron antenna cover according to claim 1, characterized in that: The material of the side enclosure tube and the cover plate is one of ceramic with a purity of more than 92% and polytetrafluoroethylene.

4. The anti-breakdown magnetron antenna cover according to claim 1, characterized in that: The length of the side casing is specifically between 14mm and 20mm.

5. The anti-breakdown magnetron antenna cover according to claim 1, characterized in that: The thickness of the side surrounding tube is between 1mm and 3mm.

6. The anti-breakdown magnetron antenna cover according to claim 1, characterized in that: The cover is specifically bonded to the microwave output wire of the magnetron by means of glue made of silicone material.

7. The anti-breakdown magnetron antenna cover according to claim 1, characterized in that: The diameter of the cross-section circle of the side enclosure tube is between 18 mm and 22 mm.

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