KR20220148409A - Safety valve apparatus for hydrogen high pressure regulator - Google Patents

Safety valve apparatus for hydrogen high pressure regulator Download PDF

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KR20220148409A
KR20220148409A KR1020210055390A KR20210055390A KR20220148409A KR 20220148409 A KR20220148409 A KR 20220148409A KR 1020210055390 A KR1020210055390 A KR 1020210055390A KR 20210055390 A KR20210055390 A KR 20210055390A KR 20220148409 A KR20220148409 A KR 20220148409A
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South Korea
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safety valve
regulator
pressure
valve
hydrogen
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KR1020210055390A
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Korean (ko)
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KR102566784B1 (en
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전완재
이준혁
김재경
강용헌
이동형
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(주)모토닉
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/03006—Gas tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
    • F16K24/04—Devices, e.g. valves, for venting or aerating enclosures for venting only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K35/00—Means to prevent accidental or unauthorised actuation
    • F16K35/10—Means to prevent accidental or unauthorised actuation with locking caps or locking bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03256—Fuel tanks characterised by special valves, the mounting thereof
    • B60K2015/03296—Pressure regulating valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03309—Tanks specially adapted for particular fuels
    • B60K2015/03315—Tanks specially adapted for particular fuels for hydrogen
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

The present invention relates to a safety valve apparatus connected to a regulator of a hydrogen tank, comprising: a regulator (20) having an entrance flow path (22), an exit flow path (23), and a valve flow path (24) communicating with a pressure reduction chamber (21) and a pressure reduction body (25); a safety valve (30) coupled to the valve flow path (24) of the regulator (20) by interposing a spring (34), and having a setting screw (35) changing the elastic force of the spring (34); and an end cap (40) mounted to prevent the random rotation of the setting screw (35). Accordingly, the present invention is able to precisely set the pressure of a pressure valve in a system, which reduces the pressure of and supplies hydrogen to a hydrogen tank, simplifying removal of residual pressure and maintaining the setting pressure in the maintenance process to improve safety and convenience.

Description

수소 고압 레귤레이터용 안전밸브 장치 {Safety valve apparatus for hydrogen high pressure regulator}Safety valve apparatus for hydrogen high pressure regulator

본 발명은 고압 레귤레이터의 안전밸브 장치에 관한 것으로서, 보다 구체적으로는 수소탱크에 고압으로 저장된 수소를 감압하여 공급하는 계통에 적용하기 위한 수소 고압 레귤레이터용 안전밸브 장치에 관한 것이다.The present invention relates to a safety valve device for a high-pressure regulator, and more particularly, to a safety valve device for a high-pressure hydrogen regulator for applying to a system for supplying hydrogen stored at high pressure in a hydrogen tank under reduced pressure.

통상적으로 수소탱크의 고압수소를 연료전지 스택에 공급하는 계통에서 수소탱크의 레귤레이터로 1차 감압의 역할을 담당한다. 레귤레이터는 수소탱크를 연결하는 매니폴드에서 하나의 포트에 연결되어 충전압 또는 탱크압을 항시 입구측으로 전달한다. 수소공급 계통의 안전성을 고려하여 감압 과정의 과도한 압력 증가에 대응하도록 레귤레이터에 안전밸브가 구비된다. 안전밸브는 시스템에서 요구되는 정확한 압력 범위에서 개방되어야 한다.In general, in the system that supplies high-pressure hydrogen from the hydrogen tank to the fuel cell stack, the regulator of the hydrogen tank plays a role of primary pressure reduction. The regulator is connected to one port in the manifold connecting the hydrogen tank, and always delivers the filling pressure or tank pressure to the inlet side. In consideration of the safety of the hydrogen supply system, a safety valve is provided in the regulator to cope with excessive pressure increase during the depressurization process. The safety valve must open in the exact pressure range required by the system.

이와 관련하여 참조할 수 있는 선행기술문헌으로서 한국 등록특허공보 제1047412호(선행문헌 1), 한국 등록특허공보 제1969934호(선행문헌 2) 등이 알려져 있다.As prior art documents that can be referenced in this regard, Korean Patent Registration No. 1047412 (Prior Document 1), Korean Patent Registration No. 1969934 (Prior Document 2), and the like are known.

선행문헌 1은 멀티 수소탱크를 갖는 수소 공급 장치에 있어서, 하나의 수소탱크에만 인탱크 레귤레이터를 장착하고, 나머지 수소탱크에는 솔레노이드 밸브를 장착하여, 주행시 솔레노이드 밸브 제어를 통해 수소 공급이 안정적으로 이루어질 수 있도록 한다.Prior Document 1 discloses that in a hydrogen supply device having a multi-hydrogen tank, an in-tank regulator is mounted on only one hydrogen tank, and a solenoid valve is mounted on the other hydrogen tank, so that hydrogen supply can be stably performed through the solenoid valve control during driving. let it be

선행문헌 2는 밸브포트에 결합되는 가이드몸체, 가이드 몸체에 결합되고 과압 발생시 밸브포트를 개방하는 밸브체, 밸브체의 내부에 설치되고 밸브체에 탄성력을 제공하는 하부 스프링 및 가이드 몸체에 결합되고 밸브체의 개방 동작시 연료를 방출하는 방출배관을 포함한다. 이에, 과압을 방출하는 기능과 내부 연료를 방출하는 기능을 통합하는 효과를 기대한다.Prior Document 2 is a guide body coupled to the valve port, a valve body coupled to the guide body and opening the valve port when overpressure occurs, a lower spring installed inside the valve body and providing elastic force to the valve body and the guide body coupled to the valve and a discharge pipe for discharging fuel during an opening operation of the sieve. Accordingly, an effect of integrating the function of discharging the overpressure and the function of discharging the internal fuel is expected.

그러나, 상기한 선행문헌은 안전밸브 개방 압력의 정밀도가 떨어지므로 시스템에서 요구되는 정확한 압력 범위에서 작동 신뢰성이 미흡하다.However, in the above-mentioned prior literature, since the precision of the safety valve opening pressure is low, the operating reliability in the precise pressure range required by the system is insufficient.

한국 등록특허공보 제1047412호 "연료전지용 수소 공급 장치 및 그 제어 방법" (공개일자 : 2009.11.02.)Korean Patent Publication No. 1047412 "Hydrogen supply device for fuel cell and control method therefor" (published on: 2009.11.02.) 한국 등록특허공보 제1969934호 "고압 레귤레이터용 안전밸브" (공개일자 : 2018.04.19.)Korean Patent Publication No. 19969934 "Safety valve for high pressure regulator" (published date: 2018.04.19.)

상기와 같은 종래의 문제점들을 개선하기 위한 본 발명의 목적은, 수소탱크에 고압으로 저장된 수소를 감압하여 공급하는 계통에서 압력밸브의 압력을 정확하게 세팅하기 위한 수소 고압 레귤레이터용 안전밸브 장치를 제공하는 데 있다.An object of the present invention for improving the conventional problems as described above is to provide a safety valve device for a hydrogen high pressure regulator for accurately setting the pressure of a pressure valve in a system for supplying hydrogen stored at high pressure in a hydrogen tank by reducing pressure. have.

본 발명의 다른 목적은 정비 과정에서 잔압을 제거하기 용이하고 정비후 재조립시 신속하게 세팅 압력으로 유지되도록 하는데 있다.Another object of the present invention is to make it easy to remove residual pressure in the maintenance process and to quickly maintain the set pressure at the time of reassembly after maintenance.

상기 목적을 달성하기 위하여, 본 발명은 수소탱크의 레귤레이터에 연계되는 안전밸브 장치에 있어서: 감압실과 감압체에 연통되는 입구유로, 출구유로, 밸브유로를 갖춘 레귤레이터; 상기 레귤레이터의 밸브유로에 스프링을 개재하여 결합되고, 스프링의 탄성력을 변동하는 세팅스크류를 구비하는 안전밸브; 및 상기 세팅스크류의 임의 회전을 방지하도록 장착되는 엔드캡;을 포함하여 이루어지는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a safety valve device connected to a regulator of a hydrogen tank, comprising: a regulator having an inlet passage, an outlet passage, and a valve passage communicating with a pressure reducing chamber and a pressure reducing body; a safety valve coupled to the valve passage of the regulator via a spring and having a setting screw for varying the elastic force of the spring; and an end cap mounted to prevent arbitrary rotation of the setting screw.

본 발명의 세부 구성에 의하면, 상기 레귤레이터는 밸브유로에서 외부로 직접 분기되는 벤트홀을 구비하는 것을 특징으로 한다.According to the detailed configuration of the present invention, the regulator is characterized in that it is provided with a vent hole directly branched from the valve flow path to the outside.

본 발명의 세부 구성에 의하면, 상기 안전밸브는 벤트홀의 개폐를 단속하도록 스프링에 지지되는 플란저를 갖춘 것을 특징으로 한다.According to the detailed configuration of the present invention, the safety valve is characterized in that it is equipped with a plunger supported by a spring to control the opening and closing of the vent hole.

본 발명의 세부 구성에 의하면, 상기 세팅스크류는 외부로 노출된 단부에서 각형홈을 동심으로 구비하는 것을 특징으로 한다.According to the detailed configuration of the present invention, the setting screw is characterized in that it is provided with a concentric square groove at the end exposed to the outside.

본 발명의 세부 구성에 의하면, 상기 엔드캡은 안전밸브 상으로 출입 가능하게 설치되는 결합체 상에 회전 가능하게 연결되는 것을 특징으로 한다.According to the detailed configuration of the present invention, the end cap is characterized in that it is rotatably connected to the assembly installed on the safety valve to be able to enter and exit.

이상과 같이 본 발명에 의하면, 수소탱크의 수소를 감압하여 공급하는 계통에서 압력밸브의 압력을 정확하게 세팅할 수 있고 정비 과정의 잔압 제거와 세팅 압력 유지가 용이하여 안전성과 편의성을 향상하는 효과가 있다.As described above, according to the present invention, it is possible to accurately set the pressure of the pressure valve in the system for supplying the hydrogen by reducing the pressure in the hydrogen tank, and it is easy to remove the residual pressure in the maintenance process and maintain the setting pressure, so there is an effect of improving safety and convenience. .

도 1은 본 발명에 따른 장치가 적용된 시스템을 나타내는 구성도
도 2는 본 발명에 따른 장치를 일측 단면으로 나타내는 구성도
도 3은 본 발명에 따른 장치를 타측 단면으로 나타내는 구성도1 is a block diagram showing a system to which an apparatus according to the present invention is applied;
2 is a block diagram showing the device according to the present invention in one cross-section;
3 is a block diagram showing the device according to the present invention in a cross-section from the other side;

이하, 첨부된 도면에 의거하여 본 발명의 실시예를 상세하게 설명하면 다음과 같다.Hereinafter, an embodiment of the present invention will be described in detail based on the accompanying drawings.

본 발명에 따르면 수소탱크의 레귤레이터에 연계되는 안전밸브 장치에 관하여 제안한다. 수소연료전지 차량 등에 수소탱크(10)를 기반으로 탑재되는 시스템을 대상으로 하지만 반드시 이에 국한되는 것은 아니다. 안전밸브 장치는 안전밸브는 물론 이에 연계되는 구성품을 포함한다.According to the present invention, a safety valve device connected to a regulator of a hydrogen tank is proposed. A system mounted on the basis of the hydrogen tank 10 in a hydrogen fuel cell vehicle or the like is targeted, but is not necessarily limited thereto. The safety valve device includes the safety valve as well as components related thereto.

도 1을 참조하면, 다수의 수소탱크(10)가 매니폴드(12)로 연결된 시스템을 나타낸다. Referring to FIG. 1 , it shows a system in which a plurality of hydrogen tanks 10 are connected by a manifold 12 .

본 발명에 따른 레귤레이터(20)는 감압실(21)과 감압체(25)에 연통되는 입구유로(22), 출구유로(23), 밸브유로(24)를 갖춘 구조를 이루고 있다.The regulator 20 according to the present invention has a structure including an inlet passage 22 , an outlet passage 23 , and a valve passage 24 communicating with the decompression chamber 21 and the pressure reducing body 25 .

도 1 및 도 2를 참조하면, 수소탱크(10)의 매니폴드(12)에 연결되는 레귤레이터(20)는 압력감압 (예컨대 수소유량 1800LPM를 기준으로 875bar →16bar) 기능을 요체로 한다. 레귤레이터(20)의 감압실(21)은 측방향으로 입구유로(22) 및 출구유로(23)와 연통되고 하방향으로 밸브유로(24)와 연통된다. 감압체(25)는 감압실(21)의 상측 영역의 피스톤(25a)과 하측 영역의 샤프트(25b)로 구성된다. 피스톤(25a)과 샤프트(25b)는 각각의 스프링(25c)(25d)으로 지지된다.Referring to FIGS. 1 and 2 , the regulator 20 connected to the manifold 12 of the hydrogen tank 10 has a function of reducing pressure (eg, 875 bar → 16 bar based on the hydrogen flow rate of 1800 LPM). The decompression chamber 21 of the regulator 20 communicates with the inlet passage 22 and the outlet passage 23 in the lateral direction and communicates with the valve passage 24 in the downward direction. The pressure reducing body 25 is composed of a piston 25a in the upper region of the decompression chamber 21 and a shaft 25b in the lower region. The piston 25a and the shaft 25b are supported by respective springs 25c and 25d.

한편, 레귤레이터(20)의 외면 일측에는 내부 유로에 연통되어 고압 또는 중압을 검출하는 압력센서(15)가 설치된다.On the other hand, a pressure sensor 15 communicating with the internal flow path to detect a high or medium pressure is installed on one side of the outer surface of the regulator 20 .

본 발명의 세부 구성에 의하면, 상기 레귤레이터(20)는 밸브유로(24)에서 외부로 직접 분기되는 벤트홀(27)을 구비하는 것을 특징으로 한다.According to the detailed configuration of the present invention, the regulator 20 is characterized in that it is provided with a vent hole 27 directly branched from the valve flow passage 24 to the outside.

도 3을 참조하면, 수직으로 형성되는 밸브유로(24)의 상단에 수평으로 교차하는 벤트홀(27)이 나타난다. 밸브유로(24)의 상단은 상방향으로 감압실(21)과 연통되는 동시에 경사진 방향으로 출구유로(23)와 연통된다. 벤트홀(27)은 후술하는 플란저(31)에 의하여 외부로 분기되는 유로를 개폐한다. 레귤레이터(20)를 정비하는 과정에서 벤트홀(27)로 잔압을 제거하기 용이하다. 벤트홀(27)이 없는 경우 밸브유로(24)의 하단으로 별도의 퍼지밸브를 구성해야 한다.Referring to FIG. 3 , a vent hole 27 that horizontally intersects appears at the upper end of the vertically formed valve flow path 24 . The upper end of the valve passage 24 communicates with the decompression chamber 21 in an upward direction and at the same time communicates with the outlet passage 23 in an inclined direction. The vent hole 27 opens and closes a flow path branched to the outside by a plunger 31 to be described later. It is easy to remove the residual pressure through the vent hole 27 in the process of maintaining the regulator 20 . If there is no vent hole (27), a separate purge valve must be configured as the lower end of the valve passage (24).

또한, 본 발명에 따르면 스프링(34)의 탄성력을 변동하는 세팅스크류(35)를 구비하는 안전밸브(30)가 상기 레귤레이터(20)의 밸브유로(24)에 스프링(34)을 개재하여 결합되는 구조를 이루고 있다.In addition, according to the present invention, the safety valve 30 having a setting screw 35 for varying the elastic force of the spring 34 is coupled to the valve flow path 24 of the regulator 20 via the spring 34 . constitutes a structure.

도 1 및 도 2에서, 레귤레이터(20)의 밸브유로(24)에 안전밸브(30), 스프링(34), 세팅스크류(35)가 설치된 상태를 나타낸다. 안전밸브(30)는 스프링(34)에 의하여 설정된 압력 이상에서 유로를 개방하여 레귤레이터(20)의 과압 상태를 해소한다. 안전밸브(30)는 밸브유로(24)에 운동형 오링(33)을 개재하여 긴밀하게 결합된다. 세팅스크류(35)는 안전밸브(30) 상에 동심으로 맞물리도록 수용되어 스프링(34)의 탄성력 변동을 유발할 수 있다. 안전밸브(30)와 세팅스크류(35)가 동심으로 결합되는 구조상 레귤레이터(20)의 과압 수소는 밸브유로(24)의 하단이 아닌 벤트홀(27)을 통하여 외부로 배출된다.1 and 2 , the safety valve 30 , the spring 34 , and the setting screw 35 are installed in the valve passage 24 of the regulator 20 . The safety valve 30 releases the overpressure state of the regulator 20 by opening the flow path above the pressure set by the spring 34 . The safety valve 30 is tightly coupled to the valve passage 24 via a motion-type O-ring 33 . The setting screw 35 may be accommodated to be concentrically engaged on the safety valve 30 to cause a change in the elastic force of the spring 34 . Due to the structure in which the safety valve 30 and the setting screw 35 are concentrically coupled, the overpressure hydrogen of the regulator 20 is discharged to the outside through the vent hole 27 rather than the lower end of the valve passage 24 .

종래에는 안전밸브(30)에 설정 압력을 조절하는 기능이 없어 레귤레이터(20)의 작동 정밀도와 신뢰도가 저하된다.Conventionally, since the safety valve 30 does not have a function for adjusting the set pressure, the operation precision and reliability of the regulator 20 are deteriorated.

본 발명의 세부 구성에 의하면, 상기 안전밸브(30)는 벤트홀(27)의 개폐를 단속하도록 스프링(34)에 지지되는 플란저(31)를 갖춘 것을 특징으로 한다.According to the detailed configuration of the present invention, the safety valve 30 is characterized in that it is equipped with a plunger 31 supported by the spring 34 to control the opening and closing of the vent hole (27).

도 2 및 도 3에서, 레귤레이터(20)의 밸브유로(24)에 플란저(31)가 장착된 상태를 나타낸다. 플란저(31)는 상단에 대략 원추형으로 돌출되는 헤드(32)를 통하여 감압실(21)로 연통되는 유로의 하단에 밀착된다. 플란저(31)의 밀착력은 세팅스크류(35)와의 사이에 개재되는 스프링(34)의 탄성력으로 유지된다. 세팅스크류(35)가 상승하면 안전밸브(30)의 설정 압력도 높아진다. 반대로 세팅스크류(35)가 하강하면 안전밸브(30)의 설정 압력도 낮아진다. 플란저(31)의 헤드(32)에는 레귤레이터(20)의 정상 작동시 기밀을 유지하도록 또 다른 오링(33)이 장착된다.2 and 3 , a state in which the plunger 31 is mounted on the valve passage 24 of the regulator 20 is shown. The plunger 31 is in close contact with the lower end of the flow passage communicating with the decompression chamber 21 through the head 32 protruding substantially conically at the upper end. The adhesion of the plunger 31 is maintained by the elastic force of the spring 34 interposed between it and the setting screw 35 . When the setting screw 35 rises, the set pressure of the safety valve 30 also increases. Conversely, when the setting screw 35 is lowered, the set pressure of the safety valve 30 is also lowered. Another O-ring 33 is mounted on the head 32 of the plunger 31 to maintain airtightness during normal operation of the regulator 20 .

본 발명의 세부 구성에 의하면, 상기 세팅스크류(35)는 외부로 노출된 단부에서 각형홈(37)을 동심으로 구비하는 것을 특징으로 한다.According to the detailed configuration of the present invention, the setting screw 35 is characterized in that it is provided with a concentric square groove 37 at the end exposed to the outside.

도 3에서, 세팅스크류(35)의 하단에 각형홈(37)이 형성된 상태를 단면으로 나타낸다. 각형홈(37)은 공구를 이용하여 세팅스크류(35)의 회전을 유발하는 형태이고, 이에 따라 플란저(31)의 밀착력, 즉 안전밸브(30)의 설정 압력을 변동하기 용이하다.In FIG. 3 , a state in which a rectangular groove 37 is formed at the lower end of the setting screw 35 is shown in cross section. The prismatic groove 37 is a shape that induces rotation of the setting screw 35 using a tool, and accordingly, it is easy to change the adhesion force of the plunger 31 , that is, the set pressure of the safety valve 30 .

만일 플란저(31)의 밀착력이 소멸될 정도로 세팅스크류(35)를 하강시키면 플란저(31)가 벤트홀(27)을 개방하여 레귤레이터(20)의 내부 유로의 잔압을 모두 제거할 수 있다. 이와 같은 구성에 의하면 종래의 퍼지밸브를 생략하여도 안전밸브(30)의 설정압력 조정과 잔류수소 퍼지 기능을 동시에 수행할 수 있다.If the setting screw 35 is lowered to such an extent that the adhesion of the plunger 31 disappears, the plunger 31 opens the vent hole 27 to remove all residual pressure in the internal flow path of the regulator 20 . According to this configuration, even if the conventional purge valve is omitted, the set pressure adjustment of the safety valve 30 and the residual hydrogen purge function can be performed at the same time.

또한, 본 발명에 따르면 엔드캡(40)이 상기 세팅스크류(35)의 임의 회전을 방지하도록 장착되는 구조를 이루고 있다.In addition, according to the present invention, the end cap 40 is configured to be mounted to prevent any rotation of the setting screw 35 .

도 3에서, 세팅스크류(35)의 하단에 엔드캡(40)이 맞물려 결합된 상태를 나타낸다. 세팅스크류(35)는 안전밸브(30)의 설정압력을 미세하게 조절하도록 피치가 작은 반면 자동적으로 풀리거나 작업자 실수로 변동될 우려가 있다. 엔드캡(40)은 고정홈(42)에 의해 세팅스크류(35)의 하단에 긴밀하게 맞물린다.In FIG. 3 , the end cap 40 is engaged with the lower end of the setting screw 35 to show a coupled state. While the setting screw 35 has a small pitch to finely adjust the set pressure of the safety valve 30, there is a risk of being automatically loosened or changed by operator error. The end cap 40 is closely engaged with the lower end of the setting screw 35 by the fixing groove 42 .

본 발명의 세부 구성에 의하면, 상기 엔드캡(40)은 안전밸브(30) 상으로 출입 가능하게 설치되는 결합체(45) 상에 회전 가능하게 연결되는 것을 특징으로 한다.According to the detailed configuration of the present invention, the end cap 40 is characterized in that it is rotatably connected to the assembly 45 installed so as to be able to enter and exit the safety valve 30 .

도 3에서, 엔드캡(40)이 결합체(45)에 연결된 상태를 나타낸다. 결합체(45)는 안전밸브(30) 상에 슬라이딩 가능하게 장착된다. 엔드캡(40)은 일측에서 결합체(45)의 하단과 힌지로 결합된다. 엔드캡(40)을 하방향으로 밀면 세팅스크류(35)에서 분리되고 수직 상태로 회전되므로 세팅스크류(35)를 조절하기 용이하다. 세팅스크류(35)의 조절이나 정비 후 재조립시에 엔드캡(40)을 수평으로 올려 고정홈(42)을 맞물리면 세팅된 압력으로 유지된다. 엔드캡(40)이 결합체(45)에 연결된 상태이므로 세팅스크류(35)의 임의적 회전을 방지할 수 있다.In FIG. 3 , the end cap 40 is connected to the assembly 45 . The assembly 45 is slidably mounted on the safety valve 30 . The end cap 40 is coupled to the lower end of the coupling body 45 on one side by a hinge. When the end cap 40 is pushed downward, it is separated from the setting screw 35 and rotated in a vertical state, so it is easy to adjust the setting screw 35 . After adjustment or maintenance of the setting screw 35, when the end cap 40 is horizontally raised to engage the fixing groove 42 during reassembly, the set pressure is maintained. Since the end cap 40 is connected to the assembly 45 , it is possible to prevent arbitrary rotation of the setting screw 35 .

본 발명은 기재된 실시예에 한정되는 것이 아니고, 본 발명의 사상 및 범위를 벗어나지 않고 다양하게 수정 및 변형할 수 있음이 이 기술의 분야에서 통상의 지식을 가진 자에게 자명하다. 따라서 그러한 변형예 또는 수정예들은 본 발명의 특허청구범위에 속한다 해야 할 것이다.The present invention is not limited to the described embodiments, and it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Accordingly, it should be said that such variations or modifications fall within the scope of the claims of the present invention.

10: 수소탱크 12: 매니폴드
15: 압력센서 20: 레귤레이터
21: 감압실 22: 입구유로
23: 출구유로 24: 밸브유로
25: 갑압체 27: 벤트홀
30: 안전밸브 31: 플란저
32: 헤드 33: 오링
34: 스프링 35: 세팅스크류
37: 각형홈 40: 엔드캡
42: 고정홈 45: 결합체10: hydrogen tank 12: manifold
15: pressure sensor 20: regulator
21: decompression chamber 22: inlet passage
23: outlet flow path 24: valve flow path
25: pressure reducing body 27: vent hole
30: safety valve 31: plunger
32: head 33: O-ring
34: spring 35: setting screw
37: square groove 40: end cap
42: fixing groove 45: assembly

Claims (5)

수소탱크의 레귤레이터에 연계되는 안전밸브 장치에 있어서:
감압실(21)과 감압체(25)에 연통되는 입구유로(22), 출구유로(23), 밸브유로(24)를 갖춘 레귤레이터(20);
상기 레귤레이터(20)의 밸브유로(24)에 스프링(34)을 개재하여 결합되고, 스프링(34)의 탄성력을 변동하는 세팅스크류(35)를 구비하는 안전밸브(30); 및
상기 세팅스크류(35)의 임의 회전을 방지하도록 장착되는 엔드캡(40);을 포함하여 이루어지는 것을 특징으로 하는 수소 고압 레귤레이터용 안전밸브 장치.In the safety valve device connected to the regulator of the hydrogen tank:
a regulator 20 having an inlet passage 22, an outlet passage 23, and a valve passage 24 communicating with the decompression chamber 21 and the pressure reducing body 25;
a safety valve 30 coupled to the valve passage 24 of the regulator 20 via a spring 34 and having a setting screw 35 for varying the elastic force of the spring 34; and
and an end cap (40) mounted to prevent arbitrary rotation of the setting screw (35). 청구항 1에 있어서,
상기 레귤레이터(20)는 밸브유로(24)에서 외부로 직접 분기되는 벤트홀(27)을 구비하는 것을 특징으로 하는 수소 고압 레귤레이터용 안전밸브 장치.The method according to claim 1,
The regulator (20) is a safety valve device for a hydrogen high pressure regulator, characterized in that it has a vent hole (27) that is directly branched from the valve passage (24) to the outside. 청구항 1에 있어서,
상기 안전밸브(30)는 벤트홀(27)의 개폐를 단속하도록 스프링(34)에 지지되는 플란저(31)를 갖춘 것을 특징으로 하는 수소 고압 레귤레이터용 안전밸브 장치.The method according to claim 1,
The safety valve (30) is a safety valve device for a hydrogen high pressure regulator, characterized in that it is equipped with a plunger (31) supported by a spring (34) to regulate the opening and closing of the vent hole (27). 청구항 1에 있어서,
상기 세팅스크류(35)는 외부로 노출된 단부에서 각형홈(37)을 동심으로 구비하는 것을 특징으로 하는 수소 고압 레귤레이터용 안전밸브 장치.The method according to claim 1,
The setting screw (35) is a safety valve device for a hydrogen high pressure regulator, characterized in that it has a concentric angular groove (37) at the end exposed to the outside. 청구항 1에 있어서,
상기 엔드캡(40)은 안전밸브(30) 상으로 출입 가능하게 설치되는 결합체(45) 상에 회전 가능하게 연결되는 것을 특징으로 하는 수소 고압 레귤레이터용 안전밸브 장치.The method according to claim 1,
The end cap (40) is a safety valve device for a hydrogen high pressure regulator, characterized in that it is rotatably connected to the assembly (45) installed so as to be able to enter and exit the safety valve (30).
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KR101047412B1 (en) 2008-04-28 2011-07-08 기아자동차주식회사 Hydrogen supply device for fuel cell and control method thereof
KR101192166B1 (en) * 2012-05-14 2012-10-17 주식회사 유니크 Solenoid valve
KR101969934B1 (en) 2016-10-11 2019-08-13 (주)모토닉 Safe valve for high pressure regulator

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