KR100435954B1 - Shut off valve - Google Patents

Shut off valve Download PDF

Info

Publication number
KR100435954B1
KR100435954B1 KR10-2001-0051047A KR20010051047A KR100435954B1 KR 100435954 B1 KR100435954 B1 KR 100435954B1 KR 20010051047 A KR20010051047 A KR 20010051047A KR 100435954 B1 KR100435954 B1 KR 100435954B1
Authority
KR
South Korea
Prior art keywords
valve
negative pressure
fuel tank
ball valve
pressure
Prior art date
Application number
KR10-2001-0051047A
Other languages
Korean (ko)
Other versions
KR20030016962A (en
Inventor
임채굉
Original Assignee
현대자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR10-2001-0051047A priority Critical patent/KR100435954B1/en
Publication of KR20030016962A publication Critical patent/KR20030016962A/en
Application granted granted Critical
Publication of KR100435954B1 publication Critical patent/KR100435954B1/en

Links

Classifications

    • 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
    • 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
    • B60K2015/03263—Ball 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
    • B60K2015/03256—Fuel tanks characterised by special valves, the mounting thereof
    • B60K2015/03296—Pressure regulating valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

본 발명의 목적은 연료탱크내에 이상적인 정,부압이 형성될 때 이상 정압과 부압을 해소시킬 수 있는 구조를 갖는 연료탱크의 이상 정,부압 해소를 위한 부압 밸브(shut-off valve)를 제공하는 데 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide a shut-off valve for resolving abnormal static and negative pressure of a fuel tank having a structure capable of relieving abnormal positive pressure and negative pressure when an ideal positive and negative pressure is formed in the fuel tank. have.

이를 위해 본 발명은 연료주입구 파이프의 밸브시트를 개폐 하는 밸브바디와, 그 밸브바디가 밸브시트를 폐쇄하는 방향으로 탄발 지지하는 밸브스프링과, 그 밸브스프링을 지지하는 복수개의 지지막대와, 상기 지지막대들 상부로 연장 돌출되는 속빈 가이드 원통과, 상기 밸브바디로부터 하부로 연장되어 상기 가이드 원통에 축방향 슬라이딩 이동 가능하게 끼워지는 원통체인 가이드축으로 구성되는 부압 밸브에 있어서,To this end, the present invention provides a valve body for opening and closing the valve seat of the fuel inlet pipe, a valve spring for supporting the valve body in the direction of closing the valve seat, a plurality of support rod for supporting the valve spring, and the support In the negative pressure valve consisting of a hollow guide cylinder extending protruding above the rods and a guide shaft which extends downward from the valve body and is fitted into the guide cylinder so as to be axially slidably movable.

상기 가이드축은 상하가 연통되게 형성되며, 가이드축의 상부에는 볼밸브시트에 의해 형성되는 볼밸브실이 마련되고, 그 볼밸브 실내에는 연료탱크내 압력에 의해 상기 볼밸브시트를 개폐하는 볼밸브가 수용되어 있는 것을 특징으로 한다.The guide shaft is formed to communicate with the upper and lower sides, a ball valve chamber formed by a ball valve seat is provided on the upper portion of the guide shaft, the ball valve inside the ball valve for opening and closing the ball valve seat by the pressure in the fuel tank is accommodated It is characterized by that.

Description

연료탱크의 이상 정압 및 부압 해소용 부압 밸브{Shut off valve}Negative pressure valve for eliminating abnormal positive pressure and negative pressure in fuel tank {Shut off valve}

본 발명은 연료탱크의 이상 정압 및 부압 해소용 부압밸브(shut-off valve)에 관한 것이다.The present invention relates to a shut-off valve for eliminating abnormal positive pressure and negative pressure of a fuel tank.

연료탱크는 연료를 저장하는 것으로 탱크본체, 연료주입구파이프, 연료게이지의 센더유니트등으로 구성되어 있으며, 탱크본체 내부에는 차량 주행중 연료의 요동을 방지함과 동시에 강도를 보강하기 위하여 몇장의 격리판이 용접되어 있다.The fuel tank stores fuel and consists of a tank body, a fuel inlet pipe, and a sender unit of the fuel gauge, and several separator plates are welded inside the tank body to prevent the fluctuation of fuel while driving the vehicle and to reinforce the strength. It is.

또 연료주입구 파이프에는 도 4에 도시하는 것과 같이 연료탱크내에 부압이 만들어져 기화기나 연료분사장치에 연료가 공급되지 않는 것을 방지하기 위해 부압밸브(20)(shut-off valve)가 설치되어 있다.In addition, as shown in Fig. 4, the fuel inlet pipe is provided with a negative pressure valve 20 (shut-off valve) to prevent negative pressure from being generated in the fuel tank so that fuel is not supplied to the vaporizer or the fuel injection device.

부압밸브(20)는 연료주입구 파이프(21)내에 방사상으로 마련되는 복수개의 지지막대(22)에 밸브스프링(23)을 개재하여 밸브바디(24)가 탄력있게 지지되도록 설치되어 있으며, 밸브바디(24)는 밸브스프링(23)에 의해 밀어 올려져 스톱퍼인 밸브시트(25)에 밀착하고 있다.The negative pressure valve 20 is installed so that the valve body 24 is elastically supported through the valve spring 23 on the plurality of support rods 22 provided radially in the fuel inlet pipe 21. 24 is pushed up by the valve spring 23 and is in close contact with the valve seat 25 which is a stopper.

그리고 부호 26과 27은 가이드 원통과 가이드축으로서 밸브바디(24)의 하강 이동에 의한 개방시 밸브바디(24)의 흔들림을 방지하여 안정적으로 거동되도록 하며, 상기 지지막대(22)는 가이드원통(26)으로부터 방사상으로 연장되어 연료주입구 파이프(21)에 고정 지지된다.And reference numerals 26 and 27 as the guide cylinder and the guide shaft to prevent the shaking of the valve body 24 when opening by the downward movement of the valve body 24 to ensure a stable behavior, the support rod 22 is a guide cylinder ( It extends radially from 26 and is fixedly supported on the fuel inlet pipe 21.

이와같은 종래 구조의 부압밸브(20)에 의하면 연료충진시 주유건이 연료주입구파이프(21)내로 삽입되어 연료가 쏟아지면, 그 연료의 토출압에 의해 밸브바디 (24)가 밸브스프링(23)을 압축하면서 하강하여 밸브시트(25)로부터 이격되므로써 연료탱크내로 유입되어지게 된다.According to the negative pressure valve 20 of the conventional structure, when the fuel supply is inserted into the fuel inlet pipe 21 during fuel filling and the fuel is poured, the valve body 24 opens the valve spring 23 by the discharge pressure of the fuel. As it is compressed and lowered, it is introduced into the fuel tank by being spaced apart from the valve seat 25.

연료의 충진이 끝나 연료주입건이 원위치로 되돌려지면, 밸브스프링(23)의 탄성력에 의해 밸브바디(24)가 상승하여 밸브시트(25)에 밀착하여 연료탱크 내부를 밀폐하게 된다.When the filling of the fuel is completed and the fuel injection gun is returned to its original position, the valve body 24 is raised by the elastic force of the valve spring 23 to be in close contact with the valve seat 25 to seal the inside of the fuel tank.

한편, 연료탱크내에 부압이 형성되면, 밸브바디(24)가 밸브스프링(23)을 압축하면서 하강하여 열리게 되므로써 부압을 해소하게 되나 연료증발가스에 의해 연료탱크내의 압력이 급등하게 되는 경우에는 밸브바디(24)가 밸브시트(25)를 차단하고 있어 부압밸브(20)를 통하여 내부 압력을 해소시킬 수는 없어 연료탱크의 변형 및 연료계의 안정성의 손상을 가져오는 문제점이 있으며, 이를 해소하기 위해서는 별도의 압력 해소 장치를 설치하여야 하므로 원가 상승 및 설치 공간의 제약을 가져오는 문제점이 있었다.On the other hand, if a negative pressure is formed in the fuel tank, the valve body 24 is lowered and opened while compressing the valve spring 23, thereby relieving the negative pressure, but when the pressure in the fuel tank rises by fuel evaporation gas, the valve body Since the 24 blocks the valve seat 25, the internal pressure cannot be relieved through the negative pressure valve 20, which causes deformation of the fuel tank and damage to the stability of the fuel system. Since a separate pressure releasing device has to be installed, there is a problem of cost increase and limitation of installation space.

이에 본 발명은 상기한 점을 감안하여 제안한 것으로서 그의 목적으로 하는 것은 연료탱크내에 이상적인 정,부압이 형성될 때 이상 정압과 부압을 해소시킬 수 있는 구조를 갖는 연료탱크의 이상 정,부압 해소를 위한 부압 밸브(shut-off valve)를 제공하는 데 있다.Accordingly, the present invention has been proposed in view of the above-mentioned point, and its object is to solve abnormal positive and negative pressure of a fuel tank having a structure capable of resolving abnormal positive pressure and negative pressure when an ideal positive and negative pressure is formed in the fuel tank. To provide a shut-off valve.

상기한 목적을 달성하기 위하여 본 발명은 연료주입구 파이프의 밸브시트를 개폐 하는 밸브바디와, 그 밸브바디가 밸브시트를 폐쇄하는 방향으로 탄발 지지하는 밸브스프링과, 그 밸브스프링을 지지하는 복수개의 지지막대와, 상기 지지막대들 상부로 연장 돌출되는 속빈 가이드 원통과, 상기 밸브바디로부터 하부로 연장되어 상기 가이드 원통에 축방향으로 슬라이딩 이동 가능하게 끼워지는 원통체인 가이드축으로 구성되는 부압밸브에 있어서,In order to achieve the above object, the present invention provides a valve body for opening and closing the valve seat of the fuel inlet pipe, a valve spring that supports the valve body in a direction to close the valve seat, and a plurality of supports for supporting the valve spring In the negative pressure valve composed of a rod, a hollow guide cylinder extending protruding above the supporting rods, and a guide shaft which extends downward from the valve body and is fitted into the guide cylinder so as to be slidable in the axial direction.

상기 가이드축은 상하가 연통되게 형성되며, 가이드축의 상부에는 볼밸브시트에 의해 형성되는 볼밸브실이 마련되고, 그 볼밸브실내에는 연료탱크내 압력에 의해 상기 볼밸브시트를 개폐하는 볼밸브가 수용되어 있는 것을 특징으로 한다.The guide shaft is formed in communication with the upper and lower sides, a ball valve chamber formed by a ball valve seat is provided at the upper portion of the guide shaft, the ball valve chamber is accommodated in the ball valve chamber to open and close the ball valve seat by the pressure in the fuel tank It is characterized by that.

도 1은 본 발명에 의한 연료탱크의 이상 정압 및 부압 해소용 부압 밸브를 나타내는 정단면도1 is a front sectional view showing a negative pressure valve for relieving abnormal positive pressure and negative pressure of a fuel tank according to the present invention;

도 2는 연료탱크내 규정치 이상의 정압 발생시 부압 밸브의 작동 상태를 나타내는 요부 확대도2 is an enlarged view of a main portion showing an operating state of a negative pressure valve when a positive pressure is generated in a fuel tank above a prescribed value;

도 3은 본 발명의 볼밸브 설치 부위의 평면도Figure 3 is a plan view of the ball valve installation site of the present invention

도 4는 종래 부압밸브의 구조를 나타내는 도면4 is a view showing the structure of a conventional negative pressure valve

※ 도면의 주요 부분에 대한 부호의 설명※ Explanation of codes for main parts of drawing

1 : 연료주입구 파이프 2 : 부압밸브1: fuel inlet pipe 2: negative pressure valve

3 : 밸브시트 4 : 밸브바디3: valve seat 4: valve body

5 : 밸브스프링 6 : 지지막대5: valve spring 6: support rod

7 : 가이드원통 8 : 가이드축7: guide cylinder 8: guide shaft

9 : 볼밸브시트 10 : 볼밸브실9: ball valve seat 10: ball valve chamber

11 : 볼밸브 12 : 걸림턱11 ball valve 12 locking jaw

이하 본 발명의 구성을 첨부한 도면을 참조하여 설명한다.Hereinafter, the configuration of the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명에 의한 이상 정압 및 부압 해소용 부압밸브를 나타내는 도면이며, 도2는 연료탱크내의 이상 정압 발생시의 본 발명 부압밸브의 요부의 작동 상태를 나타내는 도면이다.BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram showing a negative pressure valve for eliminating an abnormal positive pressure and a negative pressure according to the present invention, and Fig. 2 is a view showing an operating state of the main part of the negative pressure valve of the present invention when an abnormal positive pressure is generated in a fuel tank.

도면중 부호 1은 연료탱크(도시생략)에 연료 보충시 연료 도입을 안내하는 연료주입구파이프로서 그의 내부에는 부압밸브(2)가 설치되어 있다.In the drawing, reference numeral 1 denotes a fuel inlet pipe for guiding fuel introduction when refueling a fuel tank (not shown), and a negative pressure valve 2 is provided therein.

부압밸브(2)는 밸브시트(3)를 개폐하는 밸브바디(4)와, 그 밸브바디(4)가 밸브시트(3)를 폐쇄하는 방향으로 탄발 지지하는 밸브스프링(5)과, 그 밸브스프링(5)을 지지하는 복수개의 지지막대(6)를 포함하고 있다.The negative pressure valve 2 includes a valve body 4 that opens and closes the valve seat 3, a valve spring 5 that supports the valve body 4 in a direction in which the valve body 4 closes the valve seat 3, and the valve. A plurality of supporting rods 6 for supporting the spring 5 are included.

이 지지막대(6)에는 상하로 통하는 속이 빈 가이드원통(7)이 상부쪽으로 돌출하고 있으며, 가이드 원통(7)의 상부로 밸브바디(4)의 대향되는 위치에는 가이드축(8)이 하부로 돌출되어 있다.A hollow guide cylinder 7 extending upward and downward protrudes upward from the support rod 6, and a guide shaft 8 moves downward in a position where the valve body 4 faces the upper portion of the guide cylinder 7. It protrudes.

이 가이드축(8)은 상하로 연통하는 속이 빈 원통체로서 상기 가이드 원통(7)에 하단이 끼워져 축방향으로 슬라이딩 이동이 가능하다.The guide shaft 8 is a hollow cylindrical body which communicates up and down, and the lower end is fitted to the guide cylinder 7 to allow sliding movement in the axial direction.

그리고 상기 가이드축(8)의 상부로는 볼밸브시트(9)에 의해 볼밸브실(10)이형성되어 있으며, 이 볼밸브실(10)내에는 볼밸브(11)가 수용되어 있다.In the upper portion of the guide shaft 8, a ball valve chamber 10 is formed by a ball valve seat 9, and a ball valve 11 is accommodated in the ball valve chamber 10.

또 볼밸브실(11)의 상부에는 마치 삼발이와 같이 중심측 하부를 향해 하향경사지게 걸림턱(12)들이 돌출되어 있어, 볼밸브(11)를 상부에서 눌러 볼밸브실(10)로 밀어 넣게되면, 탄성 있는 걸림턱(12)들이 벌어졌다가 오므라들어 볼밸브(11)이 외부 이탈을 방지하게 된다.In addition, the upper part of the ball valve chamber 11, like the trivet, the locking projections 12 protrude downwardly toward the lower side of the center side, and when the ball valve 11 is pushed into the ball valve chamber 10 by pressing from the top The elastic locking jaw 12 is opened and then retracted to prevent the ball valve 11 from being separated.

이와같은 본 발명은 연료주입을 위해 연료주유건이 삽입되어 연료를 쏟아내면 그 연료의 송출압 및 자중에 의해 밸브바디(4)가 하강하여 밸브시트(3)가 개방되므로써 연료탱크내로 연료가 주입되게 되며, 연료 보충이 끝나고 연료주입건을 제거하면 밸브바디(4)는 밸브스프링(5)에 의해 밀어 올려져 밸브시트(3)에 밀착하여 폐쇄한다.In the present invention as described above, when the fuel injection gun is inserted for fuel injection and the fuel is poured out, the valve body 4 is lowered by the discharge pressure and the self-weight of the fuel so that the valve seat 3 is opened so that fuel is injected into the fuel tank. When the fuel replenishment is completed and the fuel injection gun is removed, the valve body 4 is pushed up by the valve spring 5 to close and close the valve seat 3.

그리고 주행중 연료탱크내에 부압이 형성되면 역시 그 부압에 의한 흡인력에 의해 밸브바디(4)가 밸브스프링(5)을 압축하면서 하강하여 외부공기가 연료탱크내로 도입되어 부압이 해소되며, 정압시에는 밸브시트(3)를 폐쇄하게 된다.If negative pressure is formed in the fuel tank while driving, the valve body 4 is lowered while compressing the valve spring 5 by the suction force caused by the negative pressure, and the external air is introduced into the fuel tank to eliminate the negative pressure. The seat 3 is closed.

한편, 연료증발가스의 과다 발생으로 연료탱크내의 정압이 규정치 이상 상승하게 되면, 그 이상 상태의 정압이 가이드축(8)을 통해 볼밸브(11)에 작용하게 되며, 그 압력이 볼밸브(8)의 자중보다 큰 상태이므로 볼밸브(8)는 상부로 밀어 올려져 볼밸브시트(9)가 개방되며, 연료탱크내의 연료증발가스는 개방된 볼밸브시트(9)를 통해 방출되어 내부압을 해소하게 되는 것이다(도 2 참조).On the other hand, if the static pressure in the fuel tank rises above the prescribed value due to excessive generation of fuel evaporation gas, the static pressure in the abnormal state acts on the ball valve 11 through the guide shaft 8, and the pressure is the ball valve 8 Ball valve 8 is pushed upward to open the ball valve seat 9, and the fuel evaporation gas in the fuel tank is discharged through the open ball valve seat 9 to increase the internal pressure. It will be eliminated (see Fig. 2).

이상과 같은 본 발명은 종래 연료탱크내의 부압 해소를 위해 연료주입구 파이프에 설치되는 부압밸브에 별도의 볼밸브실을 마련하고 연료탱크내의 정압이 과도하게 상승하면 그압에 의해 밀어올려져 통로를 개방하게 되는 볼밸브를 볼밸브실내에 마련하는 것에 의해서, 연료탱크내의 부압 해소 뿐 아니라 이상 상태의 내부압 증가시 이를 해소하여 일정 정압을 유지토록 하므로써 연료 시스템의 안정을 가져오게 되는 효과가 있다.The present invention as described above is provided with a separate ball valve chamber in the negative pressure valve installed in the fuel inlet pipe in order to solve the negative pressure in the conventional fuel tank, if the positive pressure in the fuel tank excessively rises to be pushed up by the pressure to open the passage. By providing a ball valve in the ball valve chamber, not only the negative pressure in the fuel tank is released, but also when the internal pressure in the abnormal state is increased, it is possible to maintain the constant static pressure so as to stabilize the fuel system.

Claims (4)

연료주입구 파이프의 밸브 시트를 개폐 하는 밸브바디와, 그 밸브바디가 밸브시트를 폐쇄하는 방향으로 탄발 지지하는 밸브스프링과, 그 밸브스프링을 지지하는 복수개의 지지막대와, 상기 지지막대들 상부로 연장 돌출되는 속빈 가이드 원통과, 상기 밸브바디로부터 하부로 연장되어 상기 가이드 원통에 축방향으로 슬라이딩 이동 가능하게 끼워지는 원통체인 가이드축으로 구성되는 부압밸브에 있어서,A valve body that opens and closes the valve seat of the fuel inlet pipe, a valve spring that supports the valve body in a direction in which the valve body closes the valve seat, a plurality of support rods that support the valve spring, and extends above the support bars. In the negative pressure valve composed of a hollow guide cylinder protruding and a guide shaft which extends downward from the valve body and is fitted into the guide cylinder so as to be slidable in the axial direction. 상기 가이드축은 상하가 연통되게 형성되며, 가이드축의 상부에는 볼밸브시트에 의해 형성되는 볼밸브실이 마련되고, 그 볼밸브실내에는 연료탱크내 압력에 따라 상기 볼밸브시트를 개폐하게 되는 볼밸브가 수용되어 있는 것을 특징으로 하는 연료탱크의 이상 정압 및 부압 해소용 부압 밸브.The guide shaft is formed to communicate with the upper and lower, and the upper portion of the guide shaft is provided with a ball valve chamber formed by a ball valve seat, the ball valve chamber is a ball valve for opening and closing the ball valve seat in accordance with the pressure in the fuel tank A negative pressure valve for relieving abnormal positive pressure and negative pressure of a fuel tank, which is accommodated. 제 1 항에 있어서,The method of claim 1, 상기 볼밸브는 연료탱크내의 정압이 규정치 이상에 다다른 때부터 밸브시트 상부로 들어 올려지게 되는 자중을 가지는 것을 특징으로 하는 연료탱크의 이상 정압 및 부압 해소용 부압밸브.The ball valve is a negative pressure valve for resolving abnormal positive pressure and negative pressure of the fuel tank, characterized in that it has a self-weight to be lifted to the upper portion of the valve seat when the positive pressure in the fuel tank reaches a predetermined value or more. 제 2 항에 있어서,The method of claim 2, 상기 볼 밸브실의 상부에는 볼밸브의 이탈을 방지토록 탄성 있는 복수개의 걸림턱이 돌출되어 있는 것을 특징으로 하는 연료탱크의 이상 정압 및 부압 해소용부압 밸브.The upper side of the ball valve chamber has a plurality of locking jaws protruding elastically to prevent the separation of the ball valve protruding abnormal pressure and negative pressure relief valve for the fuel tank. 제 3 항에 있어서,The method of claim 3, wherein 상기 걸림턱은 중심쪽 하부를 향해 하향 경사지게 형성된 것을 특징으로 하는 연료탱크의 이상 정압 및 부압 해소용 부압밸브.The latching jaw is a negative pressure valve for relieving abnormal positive pressure and negative pressure of the fuel tank, characterized in that formed inclined downward toward the lower side toward the center.
KR10-2001-0051047A 2001-08-23 2001-08-23 Shut off valve KR100435954B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR10-2001-0051047A KR100435954B1 (en) 2001-08-23 2001-08-23 Shut off valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR10-2001-0051047A KR100435954B1 (en) 2001-08-23 2001-08-23 Shut off valve

Publications (2)

Publication Number Publication Date
KR20030016962A KR20030016962A (en) 2003-03-03
KR100435954B1 true KR100435954B1 (en) 2004-06-12

Family

ID=27720541

Family Applications (1)

Application Number Title Priority Date Filing Date
KR10-2001-0051047A KR100435954B1 (en) 2001-08-23 2001-08-23 Shut off valve

Country Status (1)

Country Link
KR (1) KR100435954B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101315029B1 (en) * 2011-12-13 2013-10-08 주식회사 화영 Urea solution sender
KR102238071B1 (en) * 2019-12-31 2021-05-03 일진하이솔루스 주식회사 Vent valve of fuel tank for vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5385421U (en) * 1976-12-17 1978-07-14
US4378815A (en) * 1980-04-07 1983-04-05 Nissan Motor Co., Ltd. Pressure control device with a fluid discharge prevention mechanism
JPS6362677U (en) * 1986-10-15 1988-04-25
KR19990026490U (en) * 1997-12-19 1999-07-15 양재신 Fuel pressure regulator of car

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5385421U (en) * 1976-12-17 1978-07-14
US4378815A (en) * 1980-04-07 1983-04-05 Nissan Motor Co., Ltd. Pressure control device with a fluid discharge prevention mechanism
JPS6362677U (en) * 1986-10-15 1988-04-25
KR19990026490U (en) * 1997-12-19 1999-07-15 양재신 Fuel pressure regulator of car

Also Published As

Publication number Publication date
KR20030016962A (en) 2003-03-03

Similar Documents

Publication Publication Date Title
US5103877A (en) Vapor-liquid separator for evaporative emissions control system
US5647334A (en) Fuel vapor recovery system control valve
KR102558692B1 (en) Safety Pipe Connector
KR100435954B1 (en) Shut off valve
KR20040070560A (en) Over pressure safety apparatus of gas fuel cans
KR102167508B1 (en) Valve for high pressure tank having pressure reducing function
AU705218B2 (en) Vent valve of a fuel tank for vehicle
CN109243633B (en) Automatic charging and discharging system of nuclear power plant
KR101158631B1 (en) Dual fuel injection valve
JP6729156B2 (en) Fuel cutoff valve
KR101380829B1 (en) Vacuum relief valve
KR100361290B1 (en) Reuse device of lpg fuel for vehicle
KR20230070029A (en) Tank device for storage of gaseous medium with valve device
KR101784622B1 (en) Rent Valve for Preventing Over Charge of Fuel Tank
KR102451967B1 (en) Outflow fuel recovery apparatus of vehicle fuel tank
JP3505648B2 (en) Liquid automatic injection nozzle
CN214743359U (en) Raising structure and valve
KR200352089Y1 (en) gas thank for charge
KR20240050730A (en) Adjusting vavle for gas filling
US20240003445A1 (en) Valve, multi-functional combination valve and cflvv valve
KR100444861B1 (en) Vent valve
KR102237196B1 (en) Positive pressure control system for fuel tank
KR100581792B1 (en) Return valve of LPG bombe
KR20160022493A (en) Roll over valve for vehicle fuel system
KR100494786B1 (en) safety valve of fuel tank for vehicle

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20070530

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee