• 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:
    1522937 Reciprocating pumps and motors CANADIAN FOREMOST Ltd 7 April 1977 [9 April 1976] 14836/77 Heading F1A A hydraulic drive for a well pump comprises a double-acting hydraulic motor piston 16 connected to the well pump piston 27 by rods 17, 28, 26 and also connected to a piston 33 operating in a gas cylinder 32, the space beneath piston 33 being connected to a source 39 of gas under pressure, e.g. nitrogen, so that during the downstroke of the pump, energy is stored in the gas, and is released to assist the upstroke, the hydraulic motor being in a closed loop with a variable displacement pump having two outlet ports. A control circuit is described for controlling the stroke and speed of the motor and monitoring the pump operation.
    公开号:SU1286112A3
    申请号:SU772468130
    申请日:1977-04-09
    公开日:1987-01-23
    发明作者:Саруватари Минору
    申请人:Канейдиан Формоуст Лтд (Фирма)；
    IPC主号:
    专利说明:


    cm
    112
    The invention relates to mechanical engineering, in particular to hydraulic systems of machines, and can be used in the drives of downhole pumps for pumping oil.
    The purpose of the invention is to improve the accuracy of controlling the speed of movement of the borehole pump, the length and position of the stroke of the polished rod.
    FIG. 1 is a schematic diagram of a drive control system; figure 2 - diagram of the power cylinder.
    The power drive contains a power cylinder 1 with two working cavities 2 and 3, a piston 4 and a rod 5. The rod 5 is connected to the polished rod 6 of a borehole pump 7 located coaxially with the hydraulic cylinder 1 in the upper part of the well 8. The drive is held also variable-capacity reversible hydraulic drive pump 9, engine 10 for driving pump 9, communicating with the working cavities 2 and 3 of hydraulic cylinder 1 in a closed loop, accumulating element 11, command block i 2 controlling pump 9, associated with element 13 electroservice Government & tow T4 position of the piston 4, arranged on the hydraulic cylinder 1 over the entire length of the stroke of the piston 4.
    The hydraulic cylinder 1 and the accumulating element 11 are located in the housing 15 ,. The accumulating element 11 comprises a sleeve 16 in which a piston 17 is located, which is connected to the upper end of the rod 5. A cavity 18 is formed between the sleeve 16 and the housing 15, which communicates through the window 19 with the chamber 20 under the piston 17. The window 21 reports the camera 22 s the expansion cavity 23. The cavity 18 is connected to a source 24 of compressed inert
    ABOUT

    0
    5 0 5
    122
    gas through the controller 25, and the cavity 23 through the controller 26.
    The command block; approx. 12 has sensors 27-36. The drive is also equipped with a tank 37, a booster pump 38 connected to the outlets of the pump 9 through check valves 39 and 40, a system of unloading valves 41, hydraulic lines 42-49 and control lines 50-58. .
    The power drive downhole pump works as follows.
    In the initial position, the piston 4 is located at the top of its stroke, while the fluid from the pump 9 is fed into the cavity 3 through the hydroline 42 and the piston 4 begins to move downwards. Thus, the pump rod is lowered and at the same time the gas in the chamber 20 is compressed to accumulate energy. When piston 4 reaches the lower point of its stroke, fluid begins to flow into cavity 2 along hydroline 43, and out of cavity 3 displaces along hydroline 42. When the working cycle is completed, the sensors 27–29 while amp pressure in the system and the sensor 14 signal the actual piston position.
    The direction and magnitude of the fluid supply through the hydroline 42 or 43 is determined by the influence of the fluid from the feed pump 38 through the electro-control element 3 on the regulating elements of the pump. The electrical control element 13, in turn, is controlled by signals from the command unit 12. In this case, the magnitude and direction of the fluid supply from the pump 3 can be changed so that during the pump operation cycles each part of the velocity profile is regulated. Block 12 can be programmed to provide a fully optimal cycle of operation.
    FIG. 2
    权利要求:
    Claims (2)
    [1]
    1. POWER DRIVE OF A WELL PUMP PUMP, comprising a power hydraulic cylinder with two working cavities, a piston and a piston rod, connected to a piston rod with a polished rod of a borehole pump and located coaxially with a polished rod at the top of the well, a reversible hydraulic drive pump with variable capacity, an engine for the drive of the hydraulic pump in communication with the working cavities of the hydraulic cylinder in a closed circuit, an accumulating element for storing energy during the course of the polished piston of the hydro down and return energy during the course of the polished piston up, the command unit for controlling the hydraulic pump associated with electric power control and a piston position sensor, characterized in that, in order to improve the accuracy of controlling the speed of the downhole pump, the length and position of the stroke of the polished rod, the sensor the actual position of the piston is located along the entire length of the stroke of the piston.
    [2]
    2. Drive pop. 1, characterized in that the hydraulic drive pump is made axial-piston with a swash plate.
    SU. „1286112 AZ
    1286112 2 gas through the regulator
    23 - through the regulator
    Command block 12
    1 I
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1286112A3|1987-01-23|Well pump power drive
    EP0481690A2|1992-04-22|Method and apparatus for starting a displacer engine hydraulically
    US3971213A|1976-07-27|Pneumatic beam pumping unit
    US4762473A|1988-08-09|Pumping unit drive system
    GB1457493A|1976-12-01|Horizontal earth boring machine
    US3509600A|1970-05-05|Electrohydraulic servo control
    US4553391A|1985-11-19|Control device for a hydraulic cylinder for maintaining the pulling force thereof constant
    US4642986A|1987-02-17|Hydraulic servo motor
    GB1159465A|1969-07-23|Control for a Ramming Hammer with Hydraulic Drive
    GB2308160A|1997-06-18|Regenerative hydraulic power transmission for down-hole pump
    US4974994A|1990-12-04|Hydrostatic drive for wave generating systems in swimming pools
    SU964233A1|1982-10-07|Well sucker rod pump drive
    US4653383A|1987-03-31|Oil well sub-surface pump stroke extender
    CN208646132U|2019-03-26|A kind of synchronization pump control system of Multi-cylinder hydraulic press
    SU909278A2|1982-02-28|Hydraulically driven reciprocating pump
    RU2014516C1|1994-06-15|Method for controlling translational motion positive-displacement hydraulic drive
    SU850945A1|1981-07-30|Apparatus for controlling hydraulic engine reverse
    SU922309A1|1982-04-23|Mud pump hydraulic drive
    US2925718A|1960-02-23|Hydraulic system control
    SU1332014A1|1987-08-23|Mining machine
    SU1087934A1|1986-09-30|Hydraulic source of seismic signals
    JPH10212728A|1998-08-11|Hydraulic circuit for construction machinery
    JPS56138502A|1981-10-29|Oil pressure servo driving device
    RU2041323C1|1995-08-09|Excavator hydraulic drive
    SU953308A1|1982-08-23|Mechanism hydraulic drive
    同族专利:
    公开号 | 公开日
    GB1522937A|1978-08-31|
    SE7704097L|1977-10-10|
    ES457648A1|1978-11-16|
    IT1116733B|1986-02-10|
    NL7703881A|1977-10-11|
    CA1032064A|1978-05-30|
    JPS538481A|1978-01-25|
    DE2715159A1|1977-11-03|
    FR2347550A1|1977-11-04|
    AU511327B2|1980-08-14|
    DK156177A|1977-10-10|
    AU2418477A|1978-10-19|
    FR2347550B1|1983-09-16|
    MX145486A|1982-02-24|
    US4047384A|1977-09-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3123007A|1964-03-03|Well pump |
    FR1352067A|1964-05-13|Schoeller Bleckmann Stahlwerke|Pumping installation for the transport of liquids, in particular petroleum|
    US1839611A|1930-11-10|1932-01-05|Guy N Stafford|Pump operating mechanism|
    US2526388A|1945-07-30|1950-10-17|Ralph E Cotter Jr|Closed circuit fluid apparatus for deep well pumping with counterbalance cylinder|
    US2564285A|1948-03-11|1951-08-14|Samuel V Smith|Pneumatic-hydraulic system for operating well pumping equipment|
    US2560676A|1948-05-14|1951-07-17|Calvin W White|Pneumatic-hydraulic system for well pumping or drilling units|
    US2770197A|1953-11-20|1956-11-13|Nat Supply Co|Hydraulically actuated pump|
    US2950685A|1958-09-17|1960-08-30|Herbert M Salentine|Deep well pump reciprocator|
    US3359791A|1964-10-19|1967-12-26|Well Sentry Inc|System responsive to well pumping loads|
    US3499284A|1969-04-23|1970-03-10|Harry W Johnson|Hydraulic control unit|
    US3632234A|1969-11-04|1972-01-04|Pump Specialties Inc|Method and apparatus for actuating a subsurface reciprocal well pump|
    US3939656A|1973-02-02|1976-02-24|Inca Inks, Inc.|Hydrostatic transmission pump|US4707993A|1980-11-24|1987-11-24|Hydro-Horse, Inc.|Pumping apparatus|
    US4546607A|1980-11-24|1985-10-15|Hydro-Horse, Inc.|Pumping apparatus|
    JPS6233442B2|1981-01-10|1987-07-21|Hitachi Construction Machinery|
    US4403919A|1981-09-30|1983-09-13|Njuack Oil Pump Corporation|Apparatus and method for pumping a liquid from a well|
    JPS61113756U|1984-12-27|1986-07-18|
    US4698968A|1985-12-06|1987-10-13|Black Gold Development Corporation|Pumping unit|
    US4762473A|1986-02-05|1988-08-09|Tieben James B|Pumping unit drive system|
    CA2112711C|1993-12-31|1996-09-17|Minoru Saruwatari|Hydraulic actuating system for a fluid transfer apparatus|
    US20060168955A1|2005-02-03|2006-08-03|Schlumberger Technology Corporation|Apparatus for hydraulically energizing down hole mechanical systems|
    US8336613B2|2006-11-17|2012-12-25|Downhole Water Management, Inc|Back pressured hydraulic pump for sucker rod|
    US20080118382A1|2006-11-17|2008-05-22|Downhole Water Management, Inc.|Back pressured hydraulic pump for sucker rod|
    US20140079560A1|2012-09-14|2014-03-20|Chris Hodges|Hydraulic oil well pumping system, and method for pumping hydrocarbon fluids from a wellbore|
    US10578100B2|2013-02-26|2020-03-03|Novatek Ip, Llc|High-pressure pump for use in a high-pressure press|
    US9068484B2|2013-03-11|2015-06-30|Lawrence Livermore National Security, Llc|Double-reed exhaust valve engine|
    US9822777B2|2014-04-07|2017-11-21|i2r Solutions USA LLC|Hydraulic pumping assembly, system and method|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CA249,962A|CA1032064A|1976-04-09|1976-04-09|Pump jack device|
    [返回顶部]