KR200369803Y1 - Working oil sealing structure of hydraulic cylinder - Google Patents
Working oil sealing structure of hydraulic cylinder Download PDFInfo
- Publication number
- KR200369803Y1 KR200369803Y1 KR20-2004-0025208U KR20040025208U KR200369803Y1 KR 200369803 Y1 KR200369803 Y1 KR 200369803Y1 KR 20040025208 U KR20040025208 U KR 20040025208U KR 200369803 Y1 KR200369803 Y1 KR 200369803Y1
- Authority
- KR
- South Korea
- Prior art keywords
- cylinder
- hydraulic cylinder
- piston
- hydraulic
- control valve
- Prior art date
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Classifications
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J10/00—Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
- F16J10/02—Cylinders designed to receive moving pistons or plungers
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
- F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S277/00—Seal for a joint or juncture
- Y10S277/91—O-ring seal
Abstract
본 고안은, 예를 들어 화력발전소에서 발생된 고압증기를 터빈입구로 공급하는 설비에 설치되는 제어밸브의 유압실린더에 관한 것으로, 특히 이 유압실린더의 상, 하면에서 작동유의 누설을 방지하는 개선된 유압실린더의 작동유 밀봉구조에 관한 것이다.The present invention relates, for example, to a hydraulic cylinder of a control valve installed in a facility for supplying high pressure steam generated from a thermal power plant to a turbine inlet, and in particular, to improve leakage of hydraulic oil on the upper and lower surfaces of the hydraulic cylinder. A hydraulic oil sealing structure of a hydraulic cylinder.
즉, 본 고안은 실린더 커버(1)에 연결되어 피스톤(2)이 내장된 실린더(3)와 이 실린더(3)에 접하여 몸체(4) 내부로 연장되면서 상기 피스톤(2)에 연결된 피스톤 로드(7)로 이루어진 제어밸브를 제어하는 유압실린더 구조에 있어서, 상기 실린더(3)의 상, 하면(3a,3b)에는 O링(5)이 장착되는 안착홈(6)이 각각 형성되어 있다.That is, the present invention is connected to the cylinder cover (1) and the piston (3) in which the piston (2) is built in contact with the cylinder (3) extends into the body (4) while the piston rod connected to the piston ( In the hydraulic cylinder structure for controlling the control valve consisting of 7), the upper and lower surfaces (3a, 3b) of the cylinder (3) is provided with a seating groove (6) on which the O-ring (5) is mounted.
Description
본 고안은, 예를 들어 화력발전소에서 발생된 고압증기를 터빈입구로 공급하는 설비에 설치되는 제어밸브의 유압실린더에 관한 것으로, 특히 이 유압실린더의 상, 하면에서 작동유의 누설을 방지하는 개선된 유압실린더의 작동유 밀봉구조에 관한 것이다.The present invention relates, for example, to a hydraulic cylinder of a control valve installed in a facility for supplying high pressure steam generated from a thermal power plant to a turbine inlet, and in particular, to improve leakage of hydraulic oil on the upper and lower surfaces of the hydraulic cylinder. A hydraulic oil sealing structure of a hydraulic cylinder.
기히 공지된 바와 같이 화력발전소에서 고압 증기를 터빈입구로 공급하는 설비에는 컴바인드 스톱 및 제어밸브(Combined stop and control valve)가 설치되어 있으며, 이 제어밸브의 기본기능은 터빈속도와 부하를 조정하는 것으로 유압실린더에 의해 제어가 가능하도록 되어 있다.As is well known, the plant that supplies high pressure steam from the thermal power plant to the turbine inlet is equipped with a combined stop and control valve. The basic function of the control valve is to adjust the turbine speed and load. It is possible to control by a hydraulic cylinder.
이러한 역할을 수행하는 유압실린더는 주 증기관에 2개가 설치되어 상술한 제어밸브를 조절하게 되는데, 종래 이 유압실린더는 도 3에 도시된 바와 같이 실린더 커버(111)와, 피스톤(112), 이 피스톤(112)이 내장된 실린더(113), 몸체(114) 및, 상기 피스톤(112)에 연결된 피스톤 로드(117)로 구성되어 있으며, 상기 몸체(114)와 피스톤 로드(117) 사이에는 여러 개의 O링(118) 들과, 디스크 링(119) 및 먼지 밀봉링(120) 들이 내장되어 있었다.Two hydraulic cylinders to perform this role is installed in the main steam pipe to control the above-described control valve, conventional hydraulic cylinder is a cylinder cover 111, piston 112, this piston as shown in FIG. It is composed of a cylinder 113, a body 114, and a piston rod 117 connected to the piston 112, and there is a plurality of O between the body 114 and the piston rod 117. Rings 118, disc rings 119 and dust sealing rings 120 were embedded.
그러나 종래 유압실린더의 실린더(113)의 상, 하면은 메탈터치(Metal touch) 접촉으로 피스톤(112)의 진동이나 기동정지 반복에 의해 틈새가 생기어 도 3에서 화살표 방향과 같이 유압 작동유가 자주 누설하게 됨으로서 제어밸브 동작이 안되어 증기터빈에 증기공급을 할 수 없을 뿐만 아니라, 누설된 유압 작동유가 제어밸브 보온재에 축적되어 화재를 발생할 우려가 큰 문제점을 지니고 있었다.However, the upper and lower surfaces of the cylinder 113 of the conventional hydraulic cylinder is a metal touch (metal touch) contact due to the vibration of the piston 112 or repeated stopping occurs, the hydraulic oil often leaks as shown in the arrow direction in FIG. As a result, not only the steam supply to the steam turbine could not be supplied due to the failure of the control valve, but leaked hydraulic hydraulic oil was accumulated in the control valve heat insulating material, causing a fire.
이에 본 고안은 상기와 같은 종래 문제점을 해결하기 위해 안출된 것으로, 유압실린더의 실린더 상, 하면에서 제어밸브 개폐작동, 진동 및, 열에 의한 수축팽창에도 이 실린더 내에 있는 작동유가 외기로 누설되는 것을 방지한 유압실린더의 작동유 밀봉구조를 제공함에 그 목적이 있다.The present invention has been devised to solve the conventional problems as described above, and prevents the hydraulic fluid in the cylinder from leaking to the outside air even when the control valve opens and closes, vibrates, and contracts and expands due to heat on the lower and upper cylinders of the hydraulic cylinder. It is an object to provide a hydraulic fluid sealing structure of a hydraulic cylinder.
상기와 같은 목적을 달성하기 위한 본 고안은 실린더 커버에 연결되어 피스톤이 내장된 실린더와 이 실린더에 접하여 몸체 내부로 연장되면서 상기 피스톤에 연결된 피스톤 로드로 이루어진 제어밸브를 제어하는 유압실린더 구조에 있어서, 상기 실린더의 상, 하면에 형성된 안착홈에는 O링이 각각 내장되어 이 실린더 내부에 차있는 작동유를 밀봉시키도록 되어 있다.The present invention for achieving the above object is in the hydraulic cylinder structure for controlling a control valve consisting of a piston rod connected to the cylinder while being connected to the cylinder cover and the cylinder is built in contact with the cylinder and connected to the piston, O-rings are respectively built in the mounting grooves formed on the upper and lower surfaces of the cylinder to seal the hydraulic oil filled in the cylinder.
도 1은 본 고안에 따른 유압실린더의 밀봉구조를 갖춘 개략 구성 단면도,1 is a schematic sectional view showing a sealing structure of a hydraulic cylinder according to the present invention,
도 2는 본 고안에 따른 실린더의 확대 상세 단면도,Figure 2 is an enlarged detailed cross-sectional view of the cylinder according to the present invention,
도 3은 종래 유압실린더의 단면도로서, 도 1에 대응되는 도면이다.3 is a cross-sectional view of a conventional hydraulic cylinder, corresponding to FIG. 1.
-도면의 주요부분에 대한 부호의 설명-Explanation of symbols on the main parts of the drawing
1 : 실린더 커버, 2 : 피스톤,1: cylinder cover, 2: piston,
3 : 실린더, 4 : 몸체,3: cylinder, 4: body,
5 : O링, 6 : 안착홈,5: O-ring, 6: seating groove,
7 : 피스톤 로드.7: piston rod.
이하, 본 고안의 바람직한 실시예를 도면을 참조로 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
도 1은 본 고안에 따른 유압실린더의 전체를 나타낸 개략 구성 단면도이고, 도 2는 본 고안의 요부인 실린더의 확대 상세 단면도이다.1 is a schematic cross-sectional view showing the entire hydraulic cylinder according to the present invention, Figure 2 is an enlarged detailed cross-sectional view of the cylinder which is the main part of the present invention.
본 고안은 실린더 커버(1)에 연결되어 피스톤(2)이 내장된 실린더(3)와 이 실린더(3)에 접하여 몸체(4) 내부로 연장되면서 상기 피스톤(2)에 연결된 피스톤 로드(7)로 이루어진 제어밸브를 제어하는 유압실린더 구조에 있어서, 상기 실린더(3)의 상, 하면(3a,3b)에는 O링(5)이 장착되는 안착홈(6)이 각각 형성되어 있다.The present invention is connected to the cylinder cover (1) and the cylinder (3) in which the piston (2) is built and the piston rod (7) connected to the piston (2) while extending into the body (4) in contact with the cylinder (3) In the hydraulic cylinder structure for controlling the control valve consisting of, the upper and lower surfaces (3a, 3b) of the cylinder (3) is provided with a seating groove (6) on which the O-ring (5) is mounted.
그리고 도면중 미 설명부호 8은 커버 O-링, 9는 디스크 링, 10은 먼지 밀봉 링이다.In the figure, reference numeral 8 is a cover O-ring, 9 is a disk ring, and 10 is a dust sealing ring.
상기와 같이 본 고안은 유압실린더의 실린더(3) 상, 하면(3a,3b)에 형성된 각각의 안착홈(6)에 O링(5)이 각각 내장되어 있어서 피스톤(2)의 왕복 이동시 상기 실린더(3)의 작동유가 외부로 누설되지 않도록 밀봉시키도록 되어 있다.As described above, the present invention has an O-ring 5 in each of the seating grooves 6 formed in the upper and lower surfaces 3a and 3b of the hydraulic cylinder, so that the cylinder can be reciprocated during the reciprocating movement of the piston 2. The hydraulic oil of (3) is sealed so as not to leak to the outside.
따라서 본 고안에 따른 유압실린더의 작동유 밀봉구조는 유압실린더의 상, 하면(3a,3b) 메탈터치 접촉 부분에서 작동유의 누설을 완전하게 밀봉시키도록 되어있다.Therefore, the hydraulic oil sealing structure of the hydraulic cylinder according to the present invention is to completely seal the leakage of the hydraulic oil in the upper and lower surfaces (3a, 3b) metal touch contact portion of the hydraulic cylinder.
상기와 같은 본 고안의 효과는 다음과 같다.The effects of the present invention as described above are as follows.
1) 실린더 내부에서 작동유의 누설이 없어 제어밸브 작동이 원활하며 증기터빈을 안정적으로 운전할 수 있다.1) Since there is no leakage of hydraulic oil inside the cylinder, the control valve works smoothly and the steam turbine can be operated stably.
2) 제어밸브 주변에 작동유에 의한 오염방지와 화재예방을 실현할 수 있다.2) It is possible to prevent pollution and prevent fire by operating oil around control valve.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2004-0025208U KR200369803Y1 (en) | 2004-09-02 | 2004-09-02 | Working oil sealing structure of hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2004-0025208U KR200369803Y1 (en) | 2004-09-02 | 2004-09-02 | Working oil sealing structure of hydraulic cylinder |
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| Publication Number | Publication Date |
|---|---|
| KR200369803Y1 true KR200369803Y1 (en) | 2004-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR20-2004-0025208U KR200369803Y1 (en) | 2004-09-02 | 2004-09-02 | Working oil sealing structure of hydraulic cylinder |
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| KR (1) | KR200369803Y1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100863191B1 (en) * | 2008-04-01 | 2008-10-13 | 주식회사 에네스코 | Power Plant Turbine Valves Hydraulic Actuator Cylinder Assembly |
-
2004
- 2004-09-02 KR KR20-2004-0025208U patent/KR200369803Y1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100863191B1 (en) * | 2008-04-01 | 2008-10-13 | 주식회사 에네스코 | Power Plant Turbine Valves Hydraulic Actuator Cylinder Assembly |
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