• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A packing arrangement for a floating piston dividing a cylinder into first and second chambers comprising a circumferential groove formed in the sliding surface of the floating piston; a circumferential elevation dividing the bottom of the groove into first and second spaces situated on either side of the elevation; backing material placed in the groove; a sealing ring radially situated upon the backing material; first and second extensions on the backing material projecting into the first and second spaces, respectively; each extension having first and second lips forming an annular space between the bottom of the groove and the internal surface of the backing material; the first lip of each extension abutting a lateral wall of the groove and the second lip of each extension abutting a lateral surface of the elevation; a first pressure channel connecting the first chamber with the annular space formed by the first extension; and a second pressure channel connecting the second chamber with the annular space formed by the second extension.
    公开号:SU1026659A3
    申请号:SU803009797
    申请日:1980-11-27
    公开日:1983-06-30
    发明作者:Хунгер Вальтер
    申请人:Вальтер Хунгер (ФРГ)；
    IPC主号:
    专利说明:

    The invention relates to plavukmdu, especially for piston pressure accumulators. Known acycIvIl top pressure. with a floating piston, the seal of which is made in the form of the main elastic element located in the annular groove of the piston 1. A disadvantage of the known construction is that the working medium acts on the lateral surface of the seal and can easily suppress it on the other side, which does not ensure reliable separation of the media. Also known is a floating piston, in particular, for piston pressure accumulators, containing a main elastic element mounted in an annular groove of the piston, a sliding ring located on the outer side of the main element, and a channel formed on one of the front surfaces of the piston, communicating one from the cavities of the battery with an annular space between the bottom of the annular groove and the inner surface of the main element 2, However, the seal works reliably only when the pressure in the cavity increases, the connected channel m under the seal of the annulus. With increasing pressure in the opposite cavity, the piston seal does not provide reliable separation of media. The purpose of the inventions is to ensure reliable separation of the liquid working medium from the gaseous one. This goal is achieved by the fact that in a floating piston, in particular for piston accumulator toron pressure, containing the main elastic element installed in the annular groove of the piston, a slip ring located on the outer side of the main element, and a channel filled in on one of the frontal the piston, which connects one of the cavities of the battery with the annular space between the bottom of the annular groove and the inner surface of the main element, the bottom of the annular groove has an annular protrusion, and the main elastic element NT has protrusions in the form of sharp jaws located on both sides of the protrusion of the bottom of the groove, one of the jaws being adjacent to the side wall of the ring groove, and the other to the side surface of the protrusion, the piston being provided with an additional channel made on the other front surface of the piston similar to the first, and each of the channels is connected to the space between the jaws of the corresponding protrusion of the main element. In addition, the side surfaces of the annular protrusion are inclined. FIG. 1 shows a floating piston with a seal, a cross-section; FIG. 2 - elements of FIG. 1 in case of separate display (detail). The floating piston 1 for the battery 2 comprises a main elastic element 3 installed in the annular groove 4 of the piston 1, a slip ring 5 located on the outer side of the element 3, and a channel 6 formed in the piston 1, which communicates the cavity 7 of the battery 2 with an annular space 8 between the bottom of the annular groove 4 and the inner surface of the main element 3. The bottom of the annular groove 4 has an annular protrusion 9,. and the main element 3 has protrusions in the form of sharp jaws 10 and 11 located on both sides of the protrusion 9. In this case, the jaws 10 are made snuggling to the side wall of the groove 4, and the jaw 11 to the side surface of the jaw 9. The piston 1 has additional channel 12. The side surfaces of the annular protrusion 9 are made obliquely, and they are so inclined that the inner jaws 11, when pressure occurs in the space 8 between the jaws 10 and 11, tend to slide radially outwardly, thereby acting radially on the element 3c. la becomes larger. The device works as follows. When the battery is discharged or charged, the piston 1 moves. The pressure in the cavities of the battery 2 through the channels 6 and 12 is supplied to the space 8 and acts on the main element 3, pressing the sponge 10 and 11 k of the side surface of the protrusion 9 and the wall of the groove 4, and the radial force acts on the main element 3 and the slip ring 5 which is made, for example, from polytetrafluoroethylene plastic, on the surface of which is placed, for example, graphite grease. The transition of one working medium into the space of another working medium along the bottom of the groove 4 is reliably prevented due to the fact that the annular spaces 8 are separated from each other by two seals, namely the side surfaces of the protrusion 9, against which the internal sealing jaws 11 are pressed. along the perimeter of the piston 1, several channels 6 and 12 to ensure a more reliable seal thereof. The proposed piston ensures reliable separation of one working medium from another and thus increases the service life of the battery.
    权利要求:
    Claims (2)
    [1]
    1. FLOATING PISTON, ESPECIALLY FOR PISTON PRESSURE ACCUMULATORS, containing main elas-. a tic element installed in the annular groove of the piston, a slip ring located on the outside of the Main element, and a channel made on one of the frontal surfaces of the piston, communicating one of the cavities of the battery with an annular space between the bottom of the annular groove and the inner surface of the main element, with the fact that, in order to ensure reliable separation of the liquid working medium from the gaseous bottom of the annular groove has an annular protrusion, and the main elastic ! the element has protrusions in the form of sharp jaws located on both sides of the protrusion of the bottom of the groove, while one of the lips is made adjacent to the side wall of the annular groove, and the other to the side surface. protrusions, and the piston is equipped with an additional channel made on the other frontal surface of the piston: it is similar to the first, and each of the channels is connected to the space between the jaws! corresponding protrusion of the main element.
    [2]
    2. The piston in π. 1, characterized in that the side surfaces of the annular protrusion are made obliquely.
    next joint venture with>
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1026659A3|1983-06-30|Floating piston, preferably for piston pressure accumulators
    US4040636A|1977-08-09|Composite packing
    US4635945A|1987-01-13|Anti-extrusion seal with primary and secondary complementary elements
    US3970321A|1976-07-20|Dynamic-static shaft seal
    US4032159A|1977-06-28|Interference compression seal
    US2392182A|1946-01-01|Piston construction
    KR920020084A|1992-11-20|Orbital Rotary Compressors
    ES426922A1|1976-07-16|Dynamic seal for double-acting piston
    GB1275352A|1972-05-24|Ring seal arrangement
    US3653672A|1972-04-04|Seal ring
    US3188099A|1965-06-08|Deformable hydraulic seals of associated backing, anti-extrusion and sealing rings
    US4161320A|1979-07-17|Resilient packing
    US3608913A|1971-09-28|Gland for piston-cylinder assembly and the like
    KR960704186A|1996-08-31|SEALING ARRANGEMENT FOR A SWIVEL
    US3817517A|1974-06-18|Device for establishing a seal between cylindrical surfaces
    JPS6424192A|1989-01-26|Rotary piston type extrusion working machine
    EP1266158B1|2004-12-01|High pressure seal
    US3874679A|1975-04-01|Sealing device
    US3774919A|1973-11-27|Sealed bearing arrangement
    GB810625A|1959-03-18|Sealing or packing ring and joint including such ring
    GB2039634A|1980-08-13|Seal adaptor for existing sealing grooves
    US2894770A|1959-07-14|Rotary mechanical seal
    GB1409266A|1975-10-08|Annular fluid pressure seals
    DE2222416B2|1974-11-21|Hydropneumatic reservoir piston seal - has low friction seal between cylindrical surfaces and separate end seal
    US3195901A|1965-07-20|Sealing means for slidable member in a pressure unit
    同族专利:
    公开号 | 公开日
    DE2947895C2|1982-03-18|
    US4362304A|1982-12-07|
    DE2947895B1|1981-06-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1392035A|1921-09-27|Pistobt-packibtq |
    US688571A|1901-03-18|1901-12-10|James Airey|Packing for pistons.|
    FR462374A|1912-11-08|1914-01-26|Justo Niqui Y Vila|Piston with automatic action, without lubrication, applicable to all types of machines|
    US1444407A|1921-10-29|1923-02-06|Charles A Wefing|Oil seal and piston ring for internal-combustion engines|
    US1527834A|1923-08-01|1925-02-24|James W Bullis|Piston ring|
    DE688624C|1937-09-11|1940-02-26|Adolf Winterhoff|Sealing ring for pistons, especially for piston pumps, with a W-shaped profile in cross section|
    US2417873A|1944-05-12|1947-03-25|New York Air Brake Co|Accumulator|
    GB581268A|1944-08-17|1946-10-07|New York Air Brake Co|Improvements in hydraulic accumulators|
    US2757993A|1953-07-02|1956-08-07|Flick Reedy Corp|Piston and cylinder seal packing|
    FR2138502B1|1971-05-27|1973-05-25|Jouvenel & Cordier|
    US3831950A|1971-11-10|1974-08-27|Chicago Bridge & Iron Co|Gasket for closure seal|DE3143890C2|1981-11-05|1985-04-04|Specken AG, Urdorf|Hydropneumatic pressure medium converter|
    CH653423A5|1982-02-03|1985-12-31|Hans Bieri|Cylinder-piston unit.|
    US4556223A|1983-03-28|1985-12-03|Ingersoll-Rand Company|Sealing means with spaced annular seals having support rings|
    DE3336209C2|1983-10-05|1985-08-14|Concordia Fluidtechnik Gmbh, 7000 Stuttgart|Piston seal|
    US5208043A|1990-01-19|1993-05-04|American Standard Inc.|Adjustable shims for mold seals|
    US5454707A|1993-12-01|1995-10-03|R & D Tool And Engineering, Inc.|Non-scuffing, non-sticking blow core for stretch blow molding machines|
    US5399024A|1994-01-12|1995-03-21|Dresser-Rand Company|Face seal with hydrodynamic thrust pads|
    US5873414A|1997-09-03|1999-02-23|Pegasus International, Inc.|Bypass valve for downhole motor|
    DE19903735C2|1999-01-30|2003-06-26|Walter Hunger|Device for sealing a cylinder against a machine part running in the cylinder|
    WO2003038288A1|2001-10-26|2003-05-08|Continental Teves Ag & Co. Ohg|Piston-type accumulator|
    DE10215492B3|2002-04-09|2004-02-12|Busak + Shamban Gmbh|Sealing arrangement, in particular an air spring system|
    DE102013005711A1|2013-03-30|2014-10-02|Wabco Gmbh|Piston for a compressed air control valve|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2947895A|DE2947895C2|1979-11-28|1979-11-28|Sealing arrangement in a floating piston|
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