Pressure measuring device and method for measuring pressure in a vacuum switching tube

The pressure measuring device and method using electromagnetic radiation, an electric field, and a magnetic field address the long measurement times in vacuum switching tubes by rapidly generating a gas discharge for precise vacuum pressure determination, reducing manufacturing time.

DE102025107647B3Active Publication Date: 2026-05-28SIEMENS ENERGY GLOBAL GMBH & CO KG
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Patent Information

Application Number
DE102025107647
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Filing Date
2025-02-28
Publication Date
2026-05-28
Estimated Expiration
2045-02-28

AI Technical Summary

Technical Problem

Conventional methods for determining vacuum pressure in vacuum switching tubes result in long measurement times, which extend the production time of these tubes due to variable delay times in gas discharge ignition.

Method used

A pressure measuring device and method utilizing electromagnetic radiation, an electric field, and a magnetic field to generate a gas discharge quickly, allowing for precise measurement of vacuum pressure by ionizing gas particles and forming free electrons.

Benefits of technology

The method significantly reduces measurement time by ensuring rapid formation of free electrons, thereby shortening the manufacturing time of vacuum switching tubes.

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Abstract

The invention relates to a pressure measuring device (40) for measuring a pressure in a vacuum switching tube (1), comprising a vacuum switching tube (1) having a first electrode (3) and a second electrode (4), which have a contact state in which the first electrode (3) and the second electrode (4) are in contact with each other, and a separation state in which the first electrode (3) and the second electrode (4) are separated from each other, as well as a housing (2) that delimits an interior space (26) in which the first electrode (3) and the second electrode (4) are arranged, and which maintains a vacuum in the interior space (26) so that in the separation state the first electrode (3) and the second electrode (4) are electrically isolated from each other by the vacuum, a voltage source (41) that is configured to apply an electric field (23) to the interior space (26), and a magnet (42) that is configured to apply a magnetic field (24) to the interior space (26).the interior (26) has an orientation different from the electric field (23), and a radiation source (27) configured to impart electromagnetic radiation (28) exhibiting gamma radiation to the interior (26), wherein the radiation source (27) comprises an isotope that generates the gamma radiation and is arranged inside and / or outside the housing (2). The invention also relates to a method for measuring the pressure with the pressure measuring device.
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Citation Information

Patent Citations

  • Electrical switching device for medium and / or high voltage applications

    DE102021201781A1

  • Method to determine the pressure inside of a vacuum interrupter, and vacuum interrupter itself

    US20160163483A1