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Title:
VACUUM VALVE CONTACT MATERIAL, PRODUCTION METHOD AND VACUUM VALVE
Document Type and Number:
WIPO Patent Application WO/2018/061269
Kind Code:
A1
Abstract:
The vacuum valve according to an embodiment of the invention comprises: a cylindrical ceramic vacuum insulation container; a fixed-side sealing metal piece sealing one end open portion of the vacuum insulation container; a fixed electrode stem traversing and fixed on the fixed-side sealing metal piece; a fixed-side contact anchored onto the fixed electrode stem; a mobile-side sealing metal piece sealing the other open portion of the vacuum insulation container; a mobile electrode stem movably traversing the mobile-side sealing metal piece; a mobile-side contact anchored to the mobile electrode stem, and contacting and separating from the fixed-side contact; an extending and contracting bellows whereof one end is sealed by an intermediary portion of the mobile electrode stem while the other end is sealed by the mobile-side sealing metal piece; and an arc shield sealing a middle groove portion of the vacuum insulation container and surrounding the fixed-side contact and the mobile-side contact. The fixed-side contact and the mobile-side contact are formed from a Cu-Cr-Te alloy containing dendritic Cr and a predetermined ratio of Te as additives in a Cu base. Thus, excellent shut-down performance and excellent voltage-resistance performance of fusible metals are maintained, while welding-resistance properties are improved.

Inventors:
YOSHIDA, Takeshi (1-1 Shibaura 1-chome, Minato-k, Tokyo 01, 〒1058001, JP)
SOMEI, Hiromichi (1-1 Shibaura 1-chome, Minato-k, Tokyo 01, 〒1058001, JP)
SEKIMORI, Yuki (1-1 Shibaura 1-chome, Minato-k, Tokyo 01, 〒1058001, JP)
SAKAGUCHI, Wataru (1-1 Shibaura 1-chome, Minato-k, Tokyo 01, 〒1058001, JP)
KUSANO, Takashi (1-1 Shibaura 1-chome, Minato-k, Tokyo 01, 〒1058001, JP)
NIWA, Yoshimitsu (1-1 Shibaura 1-chome, Minato-k, Tokyo 01, 〒1058001, JP)
DAIBO, Akira (1-1 Shibaura 1-chome, Minato-k, Tokyo 01, 〒1058001, JP)
Application Number:
JP2017/014394
Publication Date:
April 05, 2018
Filing Date:
April 06, 2017
Export Citation:
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Assignee:
KABUSHIKI KAISHA TOSHIBA (1-1 Shibaura 1-chome, Minato-ku Tokyo, 01, 〒1058001, JP)
International Classes:
H01H1/025; H01H11/04; H01H33/662; H01H33/664; C22C9/00
Foreign References:
JPH10324934A1998-12-08
JPS58223222A1983-12-24
JP2014103012A2014-06-05
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (Toranomon Mitsui Building, 8-1 Kasumigaseki 3-chome, Chiyoda-k, Tokyo 13, 〒1000013, JP)
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