Title:
HIGH-PRESSURE LARGE-FLOW HIGH-WATER-BASED CARTRIDGE-TYPE DIGITAL THROTTLE VALVE AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2024/066127
Kind Code:
A1
Abstract:
A high-pressure large-flow high-water-based cartridge-type digital throttle valve and a control method, the throttle valve comprising a main valve and pilot valves. The main valve uses a symmetrical cylinder type structure and is provided with an upper control chamber and a lower control chamber which are symmetrical. The pilot valves use a structure of a pair of two-position two-way cartridge-type normally-closed ball valves; each pilot valve uses a normally-open high-speed switching valve as a driver, and controls, by using a PWM signal, the quantity of flow flowing into or out of the main valve lower control chamber, so as to control the pressure of the main valve lower control chamber and overcome a spring force of the main valve, thus pushing the main valve element to move; and a displacement sensor is used for achieving closed-loop accurate control over a displacement of the main valve. The main valve is a cone valve, and the pilot valves and the driver are all ball valves, so that said throttle valve has good sealing and no leakage under a high-water-based or pure-water medium. The pilot valves use two two-position two-way valves which are simple in structure, and processing, assembling and control are easy; the high-speed switching valve is used as the driver, which is inexpensive and highly-resistant to pollution, and has a large output force; and mechanical structures, such as levers or ball screws do not need to be introduced.
Inventors:
ZHAO JIYUN (CN)
WANG HAO (CN)
CAO CHAO (CN)
WANG YUNFEI (CN)
HUANG DI (CN)
HAN JING (CN)
ZHANG HE (CN)
LI RAN (CN)
XIA ZHIYU (CN)
WANG HAO (CN)
CAO CHAO (CN)
WANG YUNFEI (CN)
HUANG DI (CN)
HAN JING (CN)
ZHANG HE (CN)
LI RAN (CN)
XIA ZHIYU (CN)
Application Number:
PCT/CN2022/144410
Publication Date:
April 04, 2024
Filing Date:
December 31, 2022
Export Citation:
Assignee:
UNIV CHINA MINING (CN)
International Classes:
F15B13/02; F16K11/10
Foreign References:
| CN114593100A | 2022-06-07 | |||
| CN102364123A | 2012-02-29 | |||
| CN108266417A | 2018-07-10 | |||
| CN112196852A | 2021-01-08 | |||
| JP2005233198A | 2005-09-02 | |||
| JPH06174142A | 1994-06-24 | |||
| US6250202B1 | 2001-06-26 |
Attorney, Agent or Firm:
JW IP LAW FIRM (CN)
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