Title:
GAS-LIQUID LINKAGE ACTUATING MECHANISM FOR MAIN-STEAM ISOLATION VALVE OF NUCLEAR POWER PLANT
Document Type and Number:
WIPO Patent Application WO/2022/268228
Kind Code:
A1
Abstract:
A gas-liquid linkage actuating mechanism for a main-steam isolation valve of a nuclear power plant, suitable for three columns of independent safety-level power supply and instrument control systems, and comprising: a gas-liquid linkage piston cylinder (1) connected to a main-steam isolation valve (100), a pump-side quick-closing circuit (2) and a non-pump-side quick-closing circuit (3) that are respectively connected to a hydraulic cylinder (12) of the gas-liquid linkage piston cylinder (1), and a liquid supply apparatus (4). The pump-side quick-closing circuit (2) comprises a first main pipeline (21) having one end connected to the liquid supply apparatus (4) and the other end connected to the hydraulic cylinder (12) of the gas-liquid linkage piston cylinder (1); the first main pipeline (21) is provided with a first quick-closing oil drain valve (22); the pump-side quick-closing circuit (2) further comprises a first control assembly controllably connected to the first quick-closing oil drain valve (22); and the first control assembly comprises three quick-closing solenoid pilot valves connected to each other, and each quick-closing solenoid pilot valve is connected to each column of safety-level power supply and instrument control system. The mechanism solves the problem of adapting to three series of independent safety-level power supply and instrumentation control systems of a nuclear power plant, and also has the inherent safety.
Inventors:
YAN MINGJING (CN)
PENG YUE (CN)
WANG ZHENGGUANG (CN)
WANG FENG (CN)
FENG JUANJUAN (CN)
CAO XIHAI (CN)
XIAO JIAN (CN)
JIANG SONGZHI (CN)
PENG YUE (CN)
WANG ZHENGGUANG (CN)
WANG FENG (CN)
FENG JUANJUAN (CN)
CAO XIHAI (CN)
XIAO JIAN (CN)
JIANG SONGZHI (CN)
Application Number:
PCT/CN2022/101661
Publication Date:
December 29, 2022
Filing Date:
June 27, 2022
Export Citation:
Assignee:
CHINA NUCLEAR POWER DESIGN COMPANY LTD SHENZHEN (CN)
CHINA NUCLEAR POWER ENG CO LTD (CN)
DALIAN DV VALVE CO LTD (CN)
CHINA NUCLEAR POWER ENG CO LTD (CN)
DALIAN DV VALVE CO LTD (CN)
International Classes:
F16K31/122; F15B11/08
Foreign References:
| CN113357427A | 2021-09-07 | |||
| CN106402444A | 2017-02-15 | |||
| CN111524618A | 2020-08-11 | |||
| CN212203273U | 2020-12-22 | |||
| JPS57124167A | 1982-08-02 |
Attorney, Agent or Firm:
SHENZHEN REFINED INTELLECTUAL PROPERTY OFFICE (GENERAL PARTNERSHIP) (CN)
Download PDF: