CN216055377U - Sealed high-pressure connector suitable for high-vacuum cavity - Google Patents
Sealed high-pressure connector suitable for high-vacuum cavity Download PDFInfo
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- CN216055377U CN216055377U CN202121538362.8U CN202121538362U CN216055377U CN 216055377 U CN216055377 U CN 216055377U CN 202121538362 U CN202121538362 U CN 202121538362U CN 216055377 U CN216055377 U CN 216055377U
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Abstract
The utility model discloses a sealed high-pressure connector suitable for a high-vacuum cavity, which comprises a conductive column, wherein two ends of the conductive column are fixedly connected with contacts; an insulating ceramic tube is sleeved on the conductive column between the two contacts, and a tube opening of the insulating ceramic tube, which is positioned on the atmosphere side, is welded and sealed through a tube plug made of kovar alloy material; the periphery of the insulating ceramic tube is sleeved with a sleeve made of kovar alloy materials, a tube opening of the sleeve positioned on the atmosphere side is welded and sealed with the periphery of the insulating ceramic tube through a surfacing layer, a ring platform of an integrated structure is arranged on the periphery of the sleeve, and the ring platform is used for being tightly attached to the wall of a vacuum cavity. The sealed high-voltage connector is made of ceramic materials, kovar alloy and a surfacing process, and the expansion coefficients of the ceramic and the kovar alloy are closest to each other, so that the ceramic and kovar alloy are heated to be beneficial to welding, the sealing performance and the insulating performance are excellent, and the structure is stable and reliable in the using process.
Description
Technical Field
The utility model relates to a high-voltage power connector, in particular to a sealed high-voltage connector suitable for a high-vacuum cavity.
Background
The main components of the mass spectrometer work in a vacuum environment, sample molecules are ionized in an ion source and then reach an electron multiplier tube through a mass analyzer, ions are converted into electronic signals to be output, the whole ion path is in a high vacuum environment, wherein the mass analyzer needs to be connected with high voltage to form a stable electric field to screen effective ions, and a high vacuum sealing connector is needed to transmit external voltage to the vacuum environment; moreover, ions are converted into electronic signals through the electron multiplier tube, high voltage is required to be added on a dynode and a detector in the electron multiplier tube, and meanwhile, the high-vacuum sealing high-voltage connector is used for avoiding discharge during high-voltage transmission so as to avoid affecting the signal stability of an instrument.
Chinese patent publication No. CN207217895U discloses a high-vacuum sealing high-voltage connector, this high-voltage connector adopts the teflon material as sealing flange, it has insulating nature, can be fine avoid high-voltage discharge, however, because of teflon's rigidity is not enough, long-term use, along with opening closing instrument repeatedly, make the vacuum in the vacuum chamber rise to high vacuum by zero repeatedly, cause the pressure differential frequent change that teflon sealing flange both ends bore, lead to teflon sealing flange often to take place to become flexible and influence sealed effect, finally lead to mass spectrometer vacuum chamber gas leakage and make inside vacuum not up to standard, influence mass spectrometer normal operating.
Disclosure of Invention
The utility model aims to provide a sealing high-pressure connector which is good in sealing effect and high in stability and is suitable for a high-vacuum cavity.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model relates to a sealed high-pressure connector suitable for a high-vacuum cavity, which comprises a conductive column, wherein two ends of the conductive column are fixedly connected with contacts; an insulating ceramic tube is sleeved on the conductive column between the two contacts, and a tube opening of the insulating ceramic tube, which is positioned on the atmosphere side, is welded and sealed through a tube plug made of kovar alloy material; the periphery of the insulating ceramic tube is sleeved with a sleeve made of kovar alloy materials, a tube opening of the sleeve positioned on the atmosphere side is welded and sealed with the periphery of the insulating ceramic tube through a surfacing layer, a ring platform of an integrated structure is arranged on the periphery of the sleeve, and the ring platform is used for being tightly attached to the wall of a vacuum cavity.
Furthermore, the sleeve opening on the insulating ceramic tube on the atmosphere side is sleeved with a sleeve, and the sleeve and the contact surface of the sleeve opening and the contact surface of the insulating ceramic tube are welded and sealed through surfacing layers.
The sealed high-voltage connector is made of ceramic materials, kovar alloy and a surfacing process, and the expansion coefficients of the ceramic and the kovar alloy are closest to each other, so that the ceramic and kovar alloy are heated to be beneficial to welding, the sealing performance and the insulating performance are excellent, and the structure is stable and reliable in the using process.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the state of use of the present invention.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the drawings, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are provided, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1 and 2, the sealed high-pressure connector suitable for a high-vacuum cavity of the utility model includes a conductive post 2 having contacts 1.1 and 1.2 fixedly connected to two ends thereof; the connection between the contacts 1.1, 1.2 and the conductive post 2 may be by welding, riveting or forming an integral structure.
An insulating ceramic tube 3 is sleeved on the conductive column 2 between the two contacts 1.1 and 1.2, and a tube opening of the insulating ceramic tube 3 at the atmosphere side is welded and sealed by a tube plug 4 made of kovar alloy material; the outer peripheral surface of the insulating ceramic tube 3 is sleeved with a sleeve 5 made of kovar alloy material, the opening of the sleeve 5 positioned on the atmosphere side is welded and sealed with the outer peripheral surface of the insulating ceramic tube 3 through a surfacing layer, the outer peripheral surface of the sleeve 5 is provided with a ring platform 6 which is integrated with the sleeve, and the ring platform 6 is used for being closely attached to the wall 8 of the vacuum cavity as shown in fig. 2.
For further improving the sealing effect, the sleeve opening on the atmosphere side of the insulating ceramic tube 3 is sleeved with a sleeve 7, and the sleeve 7 and the contact surface of the sleeve opening and the contact surface of the insulating ceramic tube 3 are welded and sealed through a surfacing layer.
Claims (2)
1. A sealed high-pressure connector suitable for a high-vacuum cavity comprises a conductive column, two ends of which are fixedly connected with contacts; the method is characterized in that: an insulating ceramic tube is sleeved on the conductive column between the two contacts, and a tube opening of the insulating ceramic tube, which is positioned on the atmosphere side, is welded and sealed through a tube plug made of kovar alloy material; the periphery of the insulating ceramic tube is sleeved with a sleeve made of kovar alloy materials, a tube opening of the sleeve positioned on the atmosphere side is welded and sealed with the periphery of the insulating ceramic tube through a surfacing layer, a ring platform of an integrated structure is arranged on the periphery of the sleeve, and the ring platform is used for being tightly attached to the wall of a vacuum cavity.
2. The sealed high-pressure connector for a high-vacuum chamber of claim 1, wherein: the sleeve opening on one side of the insulating ceramic tube, which is positioned in the atmosphere, is sleeved with a sleeve, and the sleeve and the contact surface of the sleeve opening and the contact surface of the insulating ceramic tube are welded and sealed through surfacing layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121538362.8U CN216055377U (en) | 2021-07-07 | 2021-07-07 | Sealed high-pressure connector suitable for high-vacuum cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121538362.8U CN216055377U (en) | 2021-07-07 | 2021-07-07 | Sealed high-pressure connector suitable for high-vacuum cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216055377U true CN216055377U (en) | 2022-03-15 |
Family
ID=80616986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121538362.8U Active CN216055377U (en) | 2021-07-07 | 2021-07-07 | Sealed high-pressure connector suitable for high-vacuum cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216055377U (en) |
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2021
- 2021-07-07 CN CN202121538362.8U patent/CN216055377U/en active Active
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