KR20030058481A - Dynamic high pressure sealing device - Google Patents
Dynamic high pressure sealing device Download PDFInfo
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- KR20030058481A KR20030058481A KR1020010088935A KR20010088935A KR20030058481A KR 20030058481 A KR20030058481 A KR 20030058481A KR 1020010088935 A KR1020010088935 A KR 1020010088935A KR 20010088935 A KR20010088935 A KR 20010088935A KR 20030058481 A KR20030058481 A KR 20030058481A
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- high pressure
- energizer
- pressure
- piston
- cylinder
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Classifications
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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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
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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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/162—Special parts or details relating to lubrication or cooling of the sealing itself
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- 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
- Y10S277/908—Seal for use in rotating and reciprocating arrangement
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- 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
- Y10S277/909—Similar sealing structures for mounting on piston and about rod
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
Description
본 발명은 운동용 고압시일의 실링시스템에 관한 것으로, 특히 순간적인 운동이나 고압이 운동용 고압시일에 작용할 경우 압력부측 유체가 비압력내로 누설되는 것을 방지하기 위한 운동용 고압 실링장치에 관한 것이다.The present invention relates to a sealing system of an exercise high pressure seal, and more particularly, to an exercise high pressure sealing device for preventing a fluid from leaking into a non-pressure when a momentary exercise or a high pressure acts on the exercise high pressure seal.
일반적으로 직선 운동용 실링 시스템은 상대적인 운동이 일어나는 어느 한쪽의 경계면에 설치되어 유체나 가스 또는 공기의 누유를 방지한다. 예를 들어, 현가장치에 사용하는 운동용 실링 시스템의 고압 실링 장치가 도 1에 도시되어 있다.In general, a linear motion sealing system is installed at either interface where relative motion occurs to prevent leakage of fluids, gases or air. For example, a high pressure sealing device of an athletic sealing system for use in a suspension is shown in FIG. 1.
도 1에서와 같이 피스톤(10)은 실린더(12)내에서 슬라이딩 가능하게 설치되어 있고, 피스톤(10)에는 고압이 작용하는 상태에서 움직이더라도 고압측 유체 또는 가스(공기)가 누설되지 않도록 고압 실링 어셈블리(20)가 설치되어 있다.As shown in FIG. 1, the piston 10 is slidably installed in the cylinder 12, and the high pressure sealing is performed so that the high pressure side fluid or gas (air) does not leak even when the piston 10 moves under a high pressure action. The assembly 20 is installed.
고압 실링 어셈블리(20)는, 고무 탄성력을 갖는 환상의 에너자이저(21)와, 상기 에너자이저(21)의 외주면에 에워싸여져 에너자이저(21)로부터 탄성력에 의해 상기 실린더(12) 벽면에 밀봉 접촉하는 경한 수지재로 제작된 캡(22)과, 상기 에너자이저(21)의 양측에 위치하여 상기 캡(22)의 조립 위치를 잡아주는 백업링(23) (23)으로 구성되어 있다.The high pressure sealing assembly 20 is enclosed in an annular energizer 21 having a rubber elastic force and an outer circumferential surface of the energizer 21, and a hard resin sealingly contacting the cylinder 12 wall surface by elastic force from the energizer 21. It is composed of a cap 22 made of ash and a backup ring 23, 23 located on both sides of the energizer 21 to hold the assembly position of the cap 22.
상기 에너자이저(21)의 단면 구조는 이외에 원형, 타원형, ㄱ자형, ㄴ자형 등 다양한 형상을 나타날 수 있다. 그리고 백업링(23)은 실린더(12) 내면과 피스톤(10)의 외면과의 틈새로 에너자이저(21) 또는 캡(22)의 밀림현상(extrusion)을 방지하며 좌우운동량을 제한한다.The cross-sectional structure of the energizer 21 may exhibit various shapes such as circular, elliptical, L-shaped, and B-shaped. In addition, the backup ring 23 prevents the extrusion of the energizer 21 or the cap 22 due to the clearance between the inner surface of the cylinder 12 and the outer surface of the piston 10 and restricts the amount of lateral movement.
한편, 상기 캡(22)은 고내구성을 요구하는 운동용 실링부분에서 직접적으로 실린더(12)내면과 상대운동을 담당하는 내마모성의 탄성계수가 큰 재질로서, 에너자이저(21)로부터 밀봉력을 부여받으며, 상대적으로 에너자이저(21)보다 경도가 높아 밀봉 능력을 떨어지지만 내구수명에 유리하다. 캡(22)은 고내구성이 필요치 않거나 큰 밀봉력을 필요로 하는 경우, 캡(22)이 없이도 직접 에너자이저(21)가 실린더(12)내면과 접촉하는 경우도 있다.On the other hand, the cap 22 is a material of high elastic modulus of abrasion resistance directly responsible for the relative movement of the inner surface of the cylinder 12 in the sealing portion for movement requiring high durability, is given a sealing force from the energizer 21 It is relatively harder than the energizer 21, so the sealing ability is lowered, but it is advantageous in the durability life. When the cap 22 does not need high durability or requires a large sealing force, the energizer 21 may directly contact the inner surface of the cylinder 12 without the cap 22.
이와 같은 구성과 기능으로 이루어진 종래의 고압실링 어셈블리(20)는, 상대적으로 순간적인 운동이나 고압이 작용하면, 캡(22)이 실린더(12) 접촉면에서 순간적으로 상대운동이 발생하고, 이때 운동을 방해하는 힘 즉, 관성력, 마찰력, 실링 밀봉력, 기타의 힘 등에 의하여 에너자이저(21)의 형상이 도 2와 같이 일시적으로 변형했다가 운동이 정상화되면 원래 형상으로 탄성력에 의해 복원하게 된다.In the conventional high pressure sealing assembly 20 having such a configuration and function, when a relatively instantaneous movement or high pressure is applied, the cap 22 instantaneously generates a relative movement at the contact surface of the cylinder 12, and at this time, When the shape of the energizer 21 is temporarily deformed as shown in FIG. 2 due to an interfering force, that is, an inertia force, a friction force, a sealing sealing force, and other forces, the motion is restored to its original shape by the elastic force.
따라서 일시적으로 캡(22)과 실린더(12) 접촉면 사이에 미세한 틈이 발생하였다가 없어진다. 이때 생기 벌어진 틈으로 고압의 유체가 유입되어 반대편으로 누유가 되는 이른바 블로우 바이(blow-by)현상이 발생한다. 이런 누유 현상은 고압 실링어셈블리(20)의 밀봉효과와 내구성능을 저하시키는 단점을 갖는다.Therefore, a minute gap is generated between the cap 22 and the cylinder 12 contact surface temporarily and then disappears. At this time, a so-called blow-by phenomenon occurs in which a high-pressure fluid flows into the gap and leaks on the opposite side. This leakage phenomenon has the disadvantage of reducing the sealing effect and durability of the high-pressure sealing assembly 20.
따라서 본 발명은 상기와 같은 사정을 감안하여 창안된 것으로, 상대적인 운동을 하는 밀봉 부위에 설치된 고압 실링 어셈블리가 순간적인 운동을 하거나 고압을 받더라도 에너자이저의 변형을 방지하도록 한 운동용 고압 실링 장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made in view of the above circumstances, and provides a high-pressure sealing device for exercise to prevent deformation of the energizer even if the high-pressure sealing assembly installed in the sealing part that performs the relative movement is subjected to instantaneous movement or high pressure. The purpose is.
상기의 목적을 달성하기 위한 본 발명의 구체적인 수단은,Specific means of the present invention for achieving the above object,
유체 또는 가스가 내장된 실린더(12)내에서 위치 가변 운동가능한 피스톤 (10)에 작동중 고압의 누설을 방지하기 위해 고압 실링 어셈블리(20)를 설치하고,상기 고압실링 어셈블리(20)는, 고무 탄성력을 갖는 환상의 에너자이저(21)와, 상기 에너자이저(21)의 외주면에 에워싸여져 에너자이저(21)로부터 탄성력에 의해 상기 실린더 벽면에 밀봉 접촉하는 캡(22)과, 상기 에너자이저(21)의 양측에 위치하여 상기 캡(22)의 조립 위치를 잡아주는 백업링(23)을 구비한 운동용 고압 실 장치에 있어서,In order to prevent the leakage of high pressure during operation to the piston (10) variable position movement in the cylinder (12) containing the fluid or gas is installed, the high pressure sealing assembly 20, rubber An annular energizer 21 having an elastic force, a cap 22 surrounded by an outer circumferential surface of the energizer 21 and sealingly contacting the cylinder wall surface by the elastic force from the energizer 21, and both sides of the energizer 21 In the exercise high pressure seal device having a backup ring 23 to position and hold the assembly position of the cap 22,
상기 유체 고압실측에 형성된 압력이 상기 에너자이저(21)의 측면에 도입되도록, 상기 피스톤(10)과 실린더(12) 내면과의 틈새에 연통하는 압력공급유로(30)가 추가된 것을 특징으로 한다.The pressure supply passage 30 is added to communicate with the clearance between the piston 10 and the inner surface of the cylinder 12 so that the pressure formed on the fluid high pressure chamber side is introduced to the side of the energizer 21.
도 1은 종래 고압 실링 장치가 적용된 피스톤 실링부측의 요부조립 단면도.1 is a main part assembly sectional view of the piston sealing portion side to which the conventional high pressure sealing device is applied.
도 2는 도 1의 작동 상태도.2 is an operating state diagram of FIG.
도 3은 본 발명의 실시예에 따른 고압 실링 장치가 적용된 피스톤 실링부측의 요부조립 단면도.Figure 3 is a sectional view of the main assembly of the piston sealing portion side to which the high pressure sealing apparatus according to the embodiment of the present invention is applied.
도 4는 본 발명에 적용되는 백업링의 정면도.Figure 4 is a front view of the backup ring applied to the present invention.
도 5는 도 4의 A-A선 단면도.5 is a cross-sectional view taken along the line A-A of FIG.
도 6은 본 발명의 다른 실시예에 따른 고압 실링 장치가 적용된 피스톤 실링부측의 요부조립 단면도.6 is a sectional view of the main assembly of the piston sealing portion to which the high-pressure sealing device according to another embodiment of the present invention is applied;
〈도면의 주요 부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>
10 : 피스톤 12 : 실린더10: piston 12: cylinder
23 : 백업링 23a,10a : 압력유도홈23: backup ring 23a, 10a: pressure induction groove
30 : 압력공급유로30: pressure supply passage
이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 3은 본 발명의 실시예에 따른 고압 실링 장치가 적용된 피스톤 실링부측의 요부조립 단면도이고, 도 4는 본 발명에 적용되는 백업링의 정면도이고, 도 5는 도 4의 A-A선 단면도이고, 도 6은 본 발명의 다른 실시예에 따른 고압 실링 장치가 적용된 피스톤 실링부측의 요부조립 단면도이다.3 is a sectional view of the main assembly of the piston sealing portion to which the high pressure sealing device according to the embodiment of the present invention is applied, FIG. 4 is a front view of a backup ring applied to the present invention, and FIG. 5 is a sectional view taken along line AA of FIG. 6 is a sectional view of the main assembly of the piston sealing portion to which the high-pressure sealing device according to another embodiment of the present invention is applied.
도 3 내지 도 5는 도 1과 동일 또는 동등 부분은 동일부호를 사용하여 설명한다.3 to 5 will be described with the same or equivalent parts as in FIG.
도 3에서와 같이 유체 또는 가스가 내장된 실린더(12)내에서 위치 가변 운동 가능한 피스톤(10)에 작동중 고압의 누설을 방지하기 위해 고압 실링 어셈블리(20)를 설치하고, 상기 고압실링 어셈블리(20)는, 고무 탄성력을 갖는 환상의 에너자이저(21)와, 상기 에너자이저(21)의 외주면에 에워싸여져 에너자이저(21)로부터 탄성력에 의해 상기 실린더(12) 벽면에 밀봉 접촉하는 캡(22)과, 상기 에너자이저(21)의 양측에 위치하여 상기 캡(22)의 조립 위치를 잡아주는 백업링(23)을 구비한 운동용 고압실 장치에 있어서,As shown in FIG. 3, a high pressure sealing assembly 20 is installed to prevent the leakage of high pressure during operation to the piston 10 that can move in a variable position in the cylinder 12 in which the fluid or gas is built, and the high pressure sealing assembly ( 20 is an annular energizer 21 having a rubber elastic force, a cap 22 surrounded by an outer circumferential surface of the energizer 21 and sealingly contacting the cylinder 12 wall surface by elastic force from the energizer 21, In the high pressure room apparatus for exercise having a backup ring 23 located at both sides of the energizer 21 to hold the assembly position of the cap 22,
상기 고압실측에 형성된 유체 또는 가스 압력이 상기 에너자이저(21)의 측면(21a)에 도입되도록 상기 피스톤(10)과 실린더(12)와의 틈새에 연통하여, 상기 백업링(23)과 상기 피스톤(10)이 접촉하는 경계면에 형성된 압력공급유로(30)를 추가로 구비한 것이다.The backup ring 23 and the piston 10 communicate with a clearance between the piston 10 and the cylinder 12 so that the fluid or gas pressure formed on the high pressure chamber side is introduced into the side surface 21a of the energizer 21. ) Is further provided with a pressure supply passage (30) formed on the interface contact.
상기 압력공급유로(30)에는 상기 백업링(23)의 한 측면에 일정 간격하에 방사상으로 형성된 복수개의 백업링측 압력유도홈(23a)으로 구성될 수 있다.The pressure supply passage 30 may include a plurality of backup ring side pressure guide grooves 23a radially formed at one side of the backup ring 23 at predetermined intervals.
따라서 고압실측에 형성된 압력은 피스톤(10)과 실린더(12)의 틈새를 통해 백업링(23)의 압력유도홈(23a)을 거쳐 에너자이저(21), 캡(22), 백업링(23)으로 둘러싸여진 공간에 유입되고, 따라서 에너자이저(21)의 측면이 고압을 받게 되어 있다.Therefore, the pressure formed on the high pressure chamber side passes through the pressure inlet groove 23a of the backup ring 23 through the clearance between the piston 10 and the cylinder 12 to the energizer 21, the cap 22, and the backup ring 23. It flows into the enclosed space, and the side of the energizer 21 is therefore subjected to high pressure.
따라서 고압이 작용하는 상태에서 피스톤(10)이 움직이게 되면 백업링측 압력유도홈(23a)을 통해 작용하고 있는 고압은 피스톤(10)이 변형하려는 힘에 반대방향으로 작용하고 있어 에너자이저(21)가 변형되는 것을 방지하여 준다.Therefore, when the piston 10 moves while the high pressure is in operation, the high pressure acting through the pressure induction groove 23a on the backup ring acts in the opposite direction to the force that the piston 10 is trying to deform so that the energizer 21 deforms. It prevents it.
에너자이저(21)의 변형이 방지되면 밀봉력을 받는 캡(22)도 변형이 억제되어 캡(22)과 실린더(12) 접촉면 사이에서 고압측 유체가 누설되는 것을 방지할 수 있다.When deformation of the energizer 21 is prevented, the cap 22, which is sealed, is also suppressed, thereby preventing leakage of the high pressure side fluid between the cap 22 and the cylinder 12 contact surface.
한편, 본 발명은 상기 압력공급유로가 도 6과 같이, 상기 백업링(23)의 측면과 접촉하는 피스톤(10)의 벽면에 일정 간격으로 방사상으로 형성된 복수개의 피스톤측 압력유도홈(10a)으로 구성할 수도 있다.On the other hand, the present invention is the pressure supply passage as shown in Figure 6, a plurality of piston side pressure guide groove (10a) formed radially at regular intervals on the wall surface of the piston 10 in contact with the side of the backup ring 23 It can also be configured.
따라서 압력공급유로(30)에는, 피스톤(10)과 실린더(12)의 틈새를 거쳐 피스톤측 압력유도홈(10a)을 통해 에너자이저(21)의 측면으로 연결된다.Therefore, the pressure supply passage 30 is connected to the side of the energizer 21 via a piston side pressure guide groove 10a via a gap between the piston 10 and the cylinder 12.
이같이 본 발명은 피스톤(10)과 실린더(12)내면과의 틈새와 연통된 압력공급 유로를 다양한 형태로 구성하여 에너자이저(21)측면으로 도입시킴으로서 고압이 작용하는 상태에서 순간적인 운동을 하더라도 에너자이저(21)의 변형을 방지하여 변하지 않는 밀봉력을 유지할 수 있어 유체의 누설을 없앤다.As described above, the present invention configures the pressure supply flow passage communicating with the clearance between the piston 10 and the cylinder 12 in a variety of forms to introduce the energizer 21 into the side of the energizer 21, even though the momentary movement is performed in the state of high pressure. 21) It can prevent deformation and can keep the sealing force unchanged, eliminating the leakage of fluid.
상술한 바와 같이 본 발명의 운동용 고압 실 장치에 따르며, 피스톤의 순간적인 운동이나 고압을 받더라도 에너자이저에 변형을 방지하는 고압력이 압력공급 유로를 통해 가해지므로 피스톤의 운동 작동 조건에 관계없이 고압의 누설을 효과적으로 방지할 수 있고, 또 에너자이저의 변형없는 운동으로 내구성능이 향상된다.As described above, the high pressure seal device for exercise according to the present invention, even when the piston is subjected to instantaneous movement or high pressure, high pressure is applied through the pressure supply flow passage to prevent deformation of the energizer, so that high pressure leakage regardless of the movement condition of the piston Can be effectively prevented and durability is improved by the deformation-free movement of the energizer.
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020010088935A KR100799256B1 (en) | 2001-12-31 | 2001-12-31 | Dynamic high pressure sealing device |
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| KR1020010088935A KR100799256B1 (en) | 2001-12-31 | 2001-12-31 | Dynamic high pressure sealing device |
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| KR100799256B1 KR100799256B1 (en) | 2008-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915311A (en) * | 2010-09-26 | 2010-12-15 | 河北宣化工程机械股份有限公司 | Low-pressure reciprocating mechanism of engineering machinery chassis |
| EP3106718A1 (en) * | 2015-06-17 | 2016-12-21 | Hamilton Sundstrand Corporation | Improved piston ring sealing for pneumatic actuator |
| CN108167163A (en) * | 2018-02-22 | 2018-06-15 | 方舟 | A kind of expansion piston device for acoustic energy refrigeration machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5143382A (en) * | 1991-03-04 | 1992-09-01 | W. S. Shamban & Company | Pressure relieving slipper seal system |
| JPH0571645A (en) * | 1991-09-13 | 1993-03-23 | Koyo Seiko Co Ltd | Sealing device |
| JPH076567A (en) * | 1993-03-09 | 1995-01-10 | Sony Corp | Disk recording/reproducing device |
| JPH11201283A (en) * | 1998-01-16 | 1999-07-27 | Mitsubishi Heavy Ind Ltd | Piston and piston ring |
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- 2001-12-31 KR KR1020010088935A patent/KR100799256B1/en active IP Right Grant
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915311A (en) * | 2010-09-26 | 2010-12-15 | 河北宣化工程机械股份有限公司 | Low-pressure reciprocating mechanism of engineering machinery chassis |
| EP3106718A1 (en) * | 2015-06-17 | 2016-12-21 | Hamilton Sundstrand Corporation | Improved piston ring sealing for pneumatic actuator |
| US10094472B2 (en) | 2015-06-17 | 2018-10-09 | Hamilton Sundstrand Corporation | Piston ring sealing for pneumatic actuator |
| CN108167163A (en) * | 2018-02-22 | 2018-06-15 | 方舟 | A kind of expansion piston device for acoustic energy refrigeration machine |
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| KR100799256B1 (en) | 2008-01-30 |
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