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Patent Searching and Data


Title:
CHECK VALVE FOR DISCHARGING AIR, AND HYDRAULIC ACTUATOR FOR POWER PLANT, HAVING SAME
Document Type and Number:
WIPO Patent Application WO/2018/034534
Kind Code:
A1
Abstract:
The present invention relates to a check valve for discharging air which selectively discharges air and a hydraulic fluid, and to a hydraulic actuator for a power plant, having the check valve. The check valve for discharging air according to the present invention comprises: a valve body having an entry and exit passage through which a hydraulic fluid flows in and out, and a discharge passage for discharging, to the outside, air introduced due to the hydraulic fluid which has flowed in through the entry and exit passage and the hydraulic fluid; and a valve spool disposed in the valve body and selectively discharging the air and the hydraulic fluid by reciprocating between a discharging position for discharging the air and the hydraulic fluid in accordance with the hydraulic fluid flowing into and out of the valve body and a blocking position for blocking the discharge of the air and the hydraulic fluid. Accordingly, the spherical valve spool can discharge the air and the hydraulic fluid out of the valve body by moving between the discharging position and the blocking position, thereby preventing damage caused by an explosion of compressed air and enhancing the operational reliability of a piston.

Inventors:
YANG, Cheon Kyu (106-1506, 448 Expo-ro,Yuseong-gu, Daejeon, 34049, KR)
KIM, Soo Cheol (103-308, 448 Expo-ro,Yuseong-gu, Daejeon, 34049, KR)
LEE, Seung Hoon (107-402, 448 Expo-ro,Yuseong-gu, Daejeon, 34049, KR)
LEE, Dong Hoon (107-308, 448 Expo-ro,Yuseong-gu, Daejeon, 34049, KR)
CHOI, Yong Dae (1206-601, 119 Baeul 1-ro,Yuseong-gu, Daejeon, 34032, KR)
LEE, Se Ho (403-301, 448 Expo-ro,Yuseong-gu, Daejeon, 34049, KR)
SONG, Kyu Joe (507-1603, 16 Sangdae-ro,Yuseong-gu, Daejeon, 34199, KR)
LIM, Hoon (316-401, 25 Gujeuk-ro,Yuseong-gu, Daejeon, 34011, KR)
Application Number:
KR2017/009009
Publication Date:
February 22, 2018
Filing Date:
August 18, 2017
Export Citation:
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Assignee:
ENESG CO., LTD. (8 Techno 10-ro, Yuseong-gu, Daejeon, 34026, KR)
International Classes:
F15B15/20; F15B15/14; F15B20/00; F15B21/04; F16K15/04
Foreign References:
KR101478815B12015-01-02
JP2006207657A2006-08-10
KR101166689B12012-07-19
US4509409A1985-04-09
KR20150090619A2015-08-06
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (5F 124, Teheran-roGangnam-gu, Seoul, 06234, KR)
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