RECEPTACLE CHECK VALVE FOR REFUELING HYDROGEN

• Main Authors: HONG JIN YONG, KIM CHI SU, PARK SHIN KYU, HONG, SEONG JONG, LEE IK HEE, KIM JEONG KWON
• Format: Patent
• Language: English; Korean
• Published: 11.11.2022
• Subjects: ACTUATING-FLOATS; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; TAPS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VALVES; VEHICLES IN GENERAL; WEAPONS

Provided is a receptacle check valve for refueling hydrogen, which can improve low-pressure airtight performance with a simple structure, and reduce noise and deformation caused by chattering at a low-pressure section of a hydrogen tank. To this end, the receptacle check valve for refueling hydrogen according to the present invention comprises: a first body which has a first inner flow path extended from one end to the other end; a second body which has a second inner flow path extended from one end to the other end, and has one end inserted into the first inner flow path through the other end of the first body to be coupled to the first body; a sealing member which is arranged in the first inner flow path to seal the gap between the inner circumferential surface of the first body and one end of the second body and has a third inner flow path, which guides hydrogen introduced into the first inner flow path to the second inner flow path, extended from one end to the other end; an elastic member which is arranged in the second inner flow path; and a valve member which is supported with the elastic member to be movably arranged at the second inner flow path, and has a valve unit formed at the distal end portion. The valve unit is inserted into the third inner flow path by means of the other end of the sealing member to open and close the third inner flow path. 단순한 구조로 저압기밀 성능을 향상시킴과 아울러, 수소탱크의 저압구간에서 채터링으로 인한 소음 및 변형이 저감되는 수소 충전용 리셉터클 체크밸브가 제공된다. 이를 위해, 본 발명에 따른 수소 충전용 리셉터클 체크밸브는, 일단부터 타단까지 연장되는 제1 내부유로가 형성된 제1 바디와, 일단부터 타단까지 연장되는 제2 내부유로가 형성되고 상기 제1 바디의 타단을 통해 상기 제1 내부유로로 일단이 삽입되어 상기 제1 바디와 결합되는 제2 바디와, 상기 제1 내부유로에 배치되어 상기 제1 바디의 내주면과 상기 제2 바디의 일단 사이를 실링하고 상기 제1 내부유로로 유입된 수소를 상기 제2 내부유로로 안내하는 제3 내부유로가 일단부터 타단까지 연장 형성된 밀폐부재와, 상기 제2 내부유로에 배치된 탄성부재와, 상기 탄성부재에 지지되어 상기 제2 내부유로에 이동 가능하게 배치되고 끝단부에 밸브부가 형성된 밸브부재를 포함하고, 상기 밸브부는 상기 밀폐부재의 타단을 통해 상기 제3 내부유로로 삽입되어 상기 제3 내부유로를 개폐한다.