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Patent Searching and Data


Title:
SEAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/044504
Kind Code:
A1
Abstract:
This seal system is provided with: a double mechanical seal including a pump-side sealing mechanism (10, 12) and an atmosphere-side sealing mechanism (11, 13); a pump mechanism (19) driven by a rotating shaft (1); a first medium circulating line (30) which is connected to a first chamber (22a) and a second chamber (22b) and which causes a fluid barrier and cooling medium different from a fluid being handled by a centrifugal pump to circulate between the first chamber (22a) and the second chamber (22b); a heat exchanger (21) and a shutoff valve (28) attached in the first medium circulating line (30); a second medium circulating line (31) which bypasses the shutoff valve (28); and a medium pressure pump (45) and an open/closed valve (23) attached in the second medium circulating line (31).

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JP3504741DRAINING FLANGE
Inventors:
YOSHIKAWA, Shigeru (11-1 Haneda Asahi-cho, Ota-k, Tokyo 10, 〒1448510, JP)
HAYAKAWA, Junichi (11-1 Haneda Asahi-cho, Ota-k, Tokyo 10, 〒1448510, JP)
Application Number:
JP2018/030338
Publication Date:
March 07, 2019
Filing Date:
August 15, 2018
Export Citation:
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Assignee:
EBARA CORPORATION (11-1, Haneda Asahi-cho Ota-k, Tokyo 10, 〒1448510, JP)
International Classes:
F04D29/12; F04D29/14; F04D29/58; F16J15/34
Foreign References:
GB1441653A1976-07-07
US3746350A1973-07-17
US5746435A1998-05-05
JPS3711315B11962-08-17
Attorney, Agent or Firm:
HIROSAWA, Tetsuya et al. (GOWA Nishi-Shinjuku 4F, 5-8 Nishi-Shinjuku 7-chome, Shinjuku-k, Tokyo 23, 〒1600023, JP)
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