• 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:
    For gear boxes, constant speed drives and the like having an airtight housing, a self-pressurization system includes a source of liquid, a pump having a discharge port connected to the housing, a check valve in a conduit extending between atmosphere and the pump intake port, and a valve responsive to the pressure differential between the housing and atmosphere and connected between the source of liquid and the pump intake port to deliver large amounts of liquid to the pump when the pressure differential is high and to deliver air and minimal lubricating amounts of liquid when the pressure differential is low.
    公开号:SU795516A3
    申请号:SU782561453
    申请日:1978-01-03
    公开日:1981-01-07
    发明作者:С.Бэйтс Стефен
    申请人:Сандстренд Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to means that create pressure in a confined space, and can be used in the lubrication systems of the drive units of the aircraft.
    A known oil purification system comprising a gear pump connected to a crankcase, a centrifuge and a sump, a vacuum pump in communication with a reservoir with a lubricating fluid, a reservoir with a control pump connected to the sump, a pneumatic line with a check valve connected to the suction cavity of the gear pump, and emergency sensors level 15 HZ.
    In the known system, vacuum is created by a vacuum pump in a container with oil, and a gear pump directs the oil to a centrifuge, in which it is cleaned. Continuous operation of the pump is ensured by a pneumatic line connected to its suction strips25
    The disadvantage of this system is the presence of a large number of elements that ensure the functioning and regulation of the system. This complicates the system and therefore reduces its 3Q reliability. In addition, the system is heavy.
    The closest technical solution known to the invention is a pressure pumping system in a hermetic casing containing a constant-flow pump, a magnetizing cavity of which is connected to the casing, a spring-loaded control spool, a reservoir with a lubricating fluid connected to the spool, and a pneumatic line connected to the atmosphere through a return valve [2].
    A disadvantage of the known system is that at high altitudes, when the pressure in the sealed casing is lower than the ambient pressure, it does not clean the oil sufficiently. In addition, it is complex and has a lot of weight.
    The aim of the invention is to increase the efficiency of the System.
    To achieve this goal in the proposed system, the spool distribution windows are connected by two channels, in one of which a nozzle is installed, with a suction cavity of the pump, also connected to the pneumatic line. The end cavity of the spool is connected to the sump of the casing. In addition, the end cavity of the spool, in which the spring is located, is connected to the pneumatic line behind the non-return valve.
    In the drawing, daia scheme of the proposed system.
    An airtight casing 1 having a sump 2 for oil is connected by a channel to a pump with a constant capacity 3. The control valve 4. is connected to a tank 5 with a lubricating fluid (oil). Distribution windows 6 and 7 by channels 8 and 9 are connected to the suction cavity 10 of the pump 3. A nozzle 11 is installed in the channel 9. The end cavity 12 of the spool 4 is connected to the sump 2 of the casing 1. A spring 14 is installed in the end cavity 13 of the spool 4. Pneumatic line 15 communicating with the atmosphere through a non-return valve 16, is connected to the cavity 13 of the spool 4 and to the cavity 10 of the pump 3. The discharge cavity 17 of the pump 3 is in communication with the casing 1.
    The system operates as follows.
    When the design pressure in the casing 1, the control valve 4 is in the position shown in the drawing. The oil from the tank 5 through the distribution windows 6 and 7 through the channels 8 and 9 enters the suction cavity 10 of the pump 3 and is sent to them in a sealed casing 1. The pressure in the cavity 12 of the spool 4 transmitted from the sump 2 is sufficient to hold the spool 4 in the presented position under the action of the spring 14 and the pressure in the cavity 13. Due to the large oil flow rate, the pressure in the cavity 10 of the pump 3 is sufficient to hold the check valve 16 in the closed position.
    When the pressure drops in the casing 1 and, consequently, in the settler 2, the spool 4 lowers and closes the upper channel 18, connected with the cavity 12 of the pump 3. The oil enters the pump 3 through the nozzle 11. The pressure in the cavity 12 of the pump 3 drops, and under the action of increasing the differential pressure opens the check valve 16. Air from the environment enters the suction cavity 12 of the pump 3 and, together with a small amount of oil necessary for lubricating the pump
    3, enters the casing 1. The pressure in the casing 1 rises and returns · the spool 4 to its original position. The increased pressure in the cavity 12 of the pump 3 closes the check valve 16.
    The proposed design allows to ensure high-quality work with various combinations of pressure in the environment and in a sealed casing, and a certain amount of oil necessary for lubricating the pump is always supplied to its suction cavity. The system is quite simple and reliable.
    权利要求:
    Claims (2)
    [1]
    The invention relates to a means of creating pressure in a closed space, and can be used in the lubrication systems of aircraft drive units. A known oil purification system comprising a gear pump connected to the crankcase, a centrifuge and a sump, a vacuum pump connected to a container with lubricating fluid, a tank with a control pump connected to the sump, an air line with a check valve connected to the suction cavity of the gear pump, and emergency level sensors fl. In the known system, a vacuum is created by a vacuum pump in an oil tank, and a gear pump directs the oil to the centrifuge, in which it is cleaned. The continuous operation of the pump is ensured by the pneumatic line connected to its suction cavity. The disadvantage of this system is the presence of a large number of elements ensuring the functioning and regulation of the system. This complicates the system and, therefore, reduces its reliability. In addition, the system is heavy. The closest technical solution known to the invention is a pressure system in a hermetic casing, containing a constant-capacity pump, whose pressure cavity is connected to the casing, a spring-loaded control spool, a container with lubricating fluid connected to the spool, and an air main connected to atmosphere through the non-return valve 2. A disadvantage of the known system is that at high altitudes, when the pressure in the hermetic casing is below ambient pressure, it produces oil weave enough quality. In addition, it is complex and has a lot of weight. The aim of the invention is to increase the efficiency of the system. To achieve this goal, in the proposed system, the distribution ports of the spool are connected by two channels, in one of which a jet is installed, to the suction cavity of the pump, which also communicates with the air line. Tortsova cavity spool is connected to the sump casing. In addition, the end cavity of the spool, in which the spring is located, is connected to the pneumatic main behind the non-return valve. In the drawing is a diagram of the proposed system. Sealed casing 1, having a sump 2 for oil, is connected by a channel with a pump of constant capacity 3. Control spool 4. Is connected to capacity 5 with a lubricating fluid (oil), distribution box. Windows 6 and 7 with channels 8 and 9 are connected to the suction cavity 10 of pump 3. A nozzle 11 is installed in channel 9. The end cavity 12 of spool 4 is connected to the sump 2 of the casing 1. In the end cavity 13 of the spool 4, a spring 14 is installed. Pneumatic main 15, communicating with the atmosphere through a check valve 16, is connected to the cavity 13 of the valve 4 and the cavity 10 of the pump 3. The delivery cavity 17 of the pump 3 is in communication with the casing 1. The system works as follows. With the calculated pressure in the casing 1, the control spool 4 is in the position shown in the drawing Oil of the tank 5 through the distribution ports 6 and 7 through the channels 8 and 9 enters the suction cavity 10 of the pump 3 and directs it to the sealed casing 1. Pressure in the cavity 12 of the spool 4, transferred from the sump 2, is sufficient to hold the spool 4 in the present position under the action of the spring 14 and the pressure in the cavity 13. Due to the large oil flow, the pressure in the cavity 10 of the pump 3 is enough to hold the valve 16 in a dry position. When the pressure drops in the casing 1 and, consequently, in the settling tank 2, the spool 4 lowers and closes the upper channel 18 communicated with the cavity 12 of the pump 3. The oil enters the pump 3 through the orifice 11. The pressure in the cavity 12 of the pump 3 drops and under the effect of the increasing differential pressure opens the check valve 16. Air from the environment enters the suction cavity 12 of the pump 3 and, together with a small amount of oil required for lubricating the pump 3, enters the casing 1. The pressure in the casing 1 rises and returns the spool 4 to the original polo living The increased pressure in the cavity 12 of the pump 3 closes the non-return valve 16. The proposed design allows to ensure high-quality operation at various combinations of pressure in the environment and in a sealed casing, and some of the oil required to lubricate the pump is always supplied to its suction cavity. The system is quite simple and reliable in operation. Claims of the invention A pressure system in an airtight enclosure, comprising a constant flow pump, an injection cavity of which is connected to the housing, a spring-loaded control spool, a lubricant fluid tank connected to the spool, and an air line connected to the atmosphere through a non-return valve, equivalent to the fact that, in order to increase the efficiency of the system, the distribution windows of the spool are connected by two channels, in one of which the jet is installed, to the suction cavity of the pump, also pnevmomagistralyu minutes, the spool end member cavity in which ra.spolozhena spring connected to pnevmomagistralyu for qbpatnym valve spool and the opposite chamber is connected to the sump housing. Sources of information, rintye taken into account during the examination 1. USSR author's certificate number 369933, cl. F 16 N 7/14, 1970.
    [2]
    2. US patent number 3365981, l. 74/687, 1968.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU795516A3|1981-01-07|Pressure pumping system in hermetic casing
    US4284174A|1981-08-18|Emergency oil/mist system
    US2888097A|1959-05-26|Lubrication system
    US2956730A|1960-10-18|Jet ejector lubricant return means for a refrigeration compressor
    US4580543A|1986-04-08|Ventilator for internal combustion engine
    US2718934A|1955-09-27|Oil fog generator
    US3713513A|1973-01-30|Crankcase evacuation and oil return system
    US2361146A|1944-10-24|Pump
    SE8206051L|1983-04-28|ADJUSTMENT CONTROL FOR CONNECTION TO A COMPRESSOR, IN PARTICULAR TO A LUBRICATED SCREW COMPRESSOR
    US3139156A|1964-06-30|Sight feed lubricator
    CA1253814A|1989-05-09|Lubricator
    GB512991A|1939-10-02|Improvements in or relating to lubrication systems of engines
    US4793440A|1988-12-27|Liquid lubricant sump level management system
    US2128065A|1938-08-23|Compressor lubricator
    US2384172A|1945-09-04|Pump
    SE429030B|1983-08-08|EQUIPMENT FOR PORTION OF LUBRICATION OF RAILWAY AND LIKE
    US3134332A|1964-05-26|Pump and liquid level regulator
    GB1088959A|1967-10-25|Oil burner pump
    US3606935A|1971-09-21|Lubricating system for internal combustion engines
    US3650355A|1972-03-21|Oiling means
    US2088908A|1937-08-03|Motor vehicle system
    US1301282A|1919-04-22|Pump.
    US2463871A|1949-03-08|Vacuum pump lubrication
    US1702939A|1929-02-19|Lubricating system for air blowers
    US2253467A|1941-08-19|Liquid supply container
    同族专利:
    公开号 | 公开日
    US4097200A|1978-06-27|
    FR2376357A1|1978-07-28|
    DE2744863C2|1987-06-25|
    JPS6039919B2|1985-09-07|
    FR2376357B1|1984-10-26|
    IT1091757B|1985-07-06|
    IL53626A|1980-05-30|
    JPS5385505A|1978-07-28|
    DE2744863A1|1978-07-06|
    CA1069065A|1980-01-01|
    GB1553350A|1979-09-26|
    IL53626D0|1978-03-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US28428A|1860-05-22|Sylvester w |
    US2402499A|1941-12-11|1946-06-18|Bendix Aviat Corp|Pressure-regulating system|
    US2458763A|1944-05-13|1949-01-11|Turbo Engineering Corp|Lubricating system for mechanisms operating at high altitudes|
    US2650577A|1951-02-23|1953-09-01|Gen Motors Corp|Ventilating system|
    US2782773A|1953-08-18|1957-02-26|Bank Of America Nat Trust & Savings Ass|Pressurizing and ventilating system and apparatus for internal-combustion engines and transmission mechanisms|
    US2836345A|1954-02-26|1958-05-27|Capacity control for compressors |
    US3044406A|1959-07-22|1962-07-17|Scandinavian Agencies Corp Ltd|Electromotor-driven centrifugal pump|
    US3365981A|1964-12-28|1968-01-30|Sandstrand Corp|Combined fluid and mechanical drive|
    US3588285A|1968-10-21|1971-06-28|Sunstrand Corp|Hydraulic pump|
    US3600106A|1969-08-13|1971-08-17|Sundstrand Corp|Self-pressurizing scheme|US4371318A|1978-10-18|1983-02-01|Kime James A|Hydraulic fluid power system|
    GB2059517B|1979-09-29|1983-06-22|Rolls Royce|Lubrication system|
    JPH0432967B2|1984-04-05|1992-06-01|Topcon Corp|
    FR2569466B1|1984-08-24|1987-06-12|Peugeot|DEVICE FOR LUBRICATING A TRANSMISSION UNIT, PARTICULARLY FOR A VEHICLE WITH TWO AXLES|
    US5108177A|1990-09-12|1992-04-28|Laserline, Inc.|Two-axis levelling instrument with a single pendulum for projecting a level laser beam|
    CN106337699B|2016-09-08|2017-12-12|国网山东省电力公司电力科学研究院|A kind of quick oil pump that eliminates plays the slow system of calendering|
    CN108662417B|2017-03-29|2020-01-07|鞍钢股份有限公司|Environment-friendly high-flow grease supply device and method for dry oil|
    CN112377607B|2020-12-01|2021-10-08|浙江恒齿传动股份有限公司|Bidirectional leakage-proof underwater speed reducer|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/756,498|US4097200A|1977-01-03|1977-01-03|Self-pressurization system for gearboxes and the like|
    [返回顶部]