Title:
GAS DENSITY RELAY VERIFICATION DEVICE AND VERIFICATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/043037
Kind Code:
A1
Abstract:
A gas density relay verification device and a verification method therefor. The gas density relay verification device comprises a temperature regulation mechanism (5), at least one pressure sensor (2), at least one temperature sensor (3), a computer data processing system (7), and a contact signal sampling unit (6). During verification, the temperature regulation mechanism (5) and a gas density relay (1) are oppositely provided, and the temperature of a temperature compensation element of the gas density relay (1) is regulated by the temperature regulation mechanism (5), so that the gas density relay performs contact signal operation; a gas density value is obtained according to a pressure value and a temperature value during contact signal operation, a contact signal operating value of the gas density relay (1) is detected, and the verification work of the contact signal operating value of the gas density relay (1) is finished. The gas density relay verification device can accurately verify gas density relays having various measurement principles in different occasions and is particularly suitable for gas density relays which do not need to mount three-way valves, and verification can be achieved without disassembling the gas density relays.
Inventors:
JIN HAIYONG (CN)
WU YEHONG (CN)
HUANG XIAOBENG (CN)
ZENG WEI (CN)
HAO CAIXIA (CN)
WANG LELE (CN)
WU YEHONG (CN)
HUANG XIAOBENG (CN)
ZENG WEI (CN)
HAO CAIXIA (CN)
WANG LELE (CN)
Application Number:
PCT/CN2020/111249
Publication Date:
March 11, 2021
Filing Date:
August 26, 2020
Export Citation:
Assignee:
SHANGHAI ROYE ELECTRIC CO LTD (CN)
International Classes:
G01R31/327; G01D21/02; G01N9/00
Foreign References:
| CN110412460A | 2019-11-05 | |||
| CN210923905U | 2020-07-03 | |||
| CN202512209U | 2012-10-31 | |||
| CN108226768A | 2018-06-29 | |||
| CN201034901Y | 2008-03-12 | |||
| CN102879733A | 2013-01-16 | |||
| CN104698371A | 2015-06-10 | |||
| CN201004041Y | 2008-01-09 | |||
| US3749865A | 1973-07-31 |
Attorney, Agent or Firm:
SHANGHAI IPOWER LAW FIRM (CN)
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