• 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:
    The invention relates to a use of a hydraulic drive (1) for hydraulic high pressure water jet cutting. The hydraulic drive (1) comprises: a via a switching block (4) controlled, two plunger piston having pressure booster (2), a constant flow pump (11), which promotes a constant volume per revolution, a servo motor (12) for driving the Constant flow pump (11) and a controller (15) for controlling the servomotor (12), wherein the controller (15) with pressure sensors (14) in the high-pressure region and / or pressure sensors (13) in the region of the hydraulic drive (1) is.
    公开号:AT512322A1
    申请号:T1909/2011
    申请日:2011-12-30
    公开日:2013-07-15
    发明作者:Franz Ing Trieb；Rene Dipl Ing Stuehlinger；Rene Ing Moderer
    申请人:Bhdt Gmbh；
    IPC主号:
    专利说明:

    • ···· ···· * ·
    Hydraulic drive for a pressure intensifier
    The invention relates to a hydraulic drive with a volume and / or pressure control for a pressure booster of a high pressure device, consisting essentially of a motor drive with a pump for a pressure medium and a controller.
    Modern high-pressure devices operate with pressures of up to 10,000 bar and above and impose extremely high mechanical demands on the materials of the device component, many of which are within the limits of high-strength alloys with regard to mechanical tensile and alternating strength. Although relief valves are provided throughout for sudden interruptions of the flow of the fluid in the high-pressure line, a pressure increase up to the response of the valve can cause material damage. 15
    The desired pressures in the high-pressure part are created by means of pressure booster, which operate on the principle of hydraulic pressure booster, as can be seen in principle in FIG. 1. 20 A drive of a pressure booster is usually via a hydraulic part with a volume and / or pressure control of a hydraulic fluid, which part is formed essentially of a motor drive and a pump part.
    Essential for the hydraulic part of a high-pressure device is an efficient long-term delivery of the same, an immediate controllability during shutdowns or blockages with avoidance of overpressure peaks and a low pulsation in the high pressure part of the device.
    According to the state of the art piston pumps are usually selected as the hydraulic drive for a pressure intensifier 30 which have a high power density for high pressures with good volumetric efficiency and good hydraulic-mechanical efficiency with the most accurate adjustability of the stroke volume. These pumps are expertly consistently made of several parallel units piston pumps, which are used as axial piston machines in
    Schrägachsenausführung or can be designed as a radial piston pumps and have special advantages.
    On the one hand, these are self-adjusting gaps in hydrostatic / hydrodynamic 5 loads of axial piston machines, on the other hand there is the possibility of an immediate flow control of the fluid by Axwinkelverstellung drive / pump system.
    Corresponding to the requirements of technical progress in sector 10 high pressure equipment, namely the safety of
    System control, the minimization of pressure surges and thus the minimization of material overloads of components in the high pressure part, increasing the life of the device, the increase in energy efficiency, the reduction in power consumption at stationary pressure booster and the improved operation of the high-pressure device, it is an object of the invention a
    To provide hydraulic unit for a high-pressure intensifier of the type mentioned, the use of which overcomes the disadvantages of the prior art.
    This object is achieved with a generic drive for a pressure booster 20 of a high-pressure device characterized in that as a hydraulic drive in
    Essentially a constant-flow pump, or a pump which requires a constant volume per revolution, driven by a servo motor, is used, which servo motor is electrically controllable, controllable and / or switchable by low-pressure side means and / or high-pressure side means. 25
    Advantages of the hydraulic drive according to the invention for a pressure booster are available in multiple ways. One advantage is the fact that substantially no pulsation during introduction of a high-pressure medium into a filler or during water jet cutting no chipping of brittle materials during shooting 30 is formed.
    Pressure fluctuations during switching on and off of the cutting valve are kept low by using the new hydraulic drive, whereby an overload of the components is largely avoided. 2 · · · ···; , · *, ··. * * *: »·. *». · .. ····· .......
    A change in the volume of high pressure fluid does not require immediate equipment adaptation. 5 A soft start of the high-pressure system takes place in a favorable manner with particularly low energy consumption.
    In one embodiment of the invention, an internal gear pump is used as a constant-flow pump. Internal gear pumps have due to an adapted tooth shape favorable meshing conditions and thus low volume flow pulsation at high operating pressures of about 300 bar with good efficiency. Such pumps are also characterized by low sound pressure level. 15 A servo drive can contain a DC motor, an asynchronous motor or a synchronous motor, ie any type of electric motor. The distinction lies solely in the control of the motor, which is effected by a closed loop, which signals according to the invention by low-pressure side means of the pressure booster and / or high-pressure side means of the high-pressure device 20 can be fed.
    In terms of plant engineering and process technology, but also with regard to minimizing energy consumption, it is advantageous if the servomotor is designed as a frequency-controlled drive motor. 25
    With reference to a drawing, an embodiment of the invention will be described below.
    It shows Fia. 1 shows schematically a high-pressure device with an output side of a delivery line 3, a pulsation damper 31 and a pressure relief valve 32.
    A pressure booster 2 is supplied with high pressure fluid via Vorschalteinrichtungen 21, such as low pressure filter, pre-pressure pump, shut-off valve. 3 ..; ···: *** :. · *. *::: ·. ·. /: .....
    An example, two plungers having pressure intensifier 2 can be moved by a hydraulic unit 1 with a pump 11 and a motor 12 via a switching block 4 by a pressure medium 10. 5 A feed of a pressure booster is carried out according to the prior art usually by means of bent-axis variable displacement pumps with hydraulic-mechanical Mengenregier with parallel acting cylinders whose flow rates add up.
    In the case of direct axial alignment, it is possible to achieve an immediate reduction of the delivery rate of pressure medium to zero despite an engine rotation.
    A high-pressure device, such as a water-jet cutting system, usually has long-lasting work phases, so that a person skilled in a drive of a pressure booster on a servo motor and a pump with 15 constant-quantity promotion far from a usual technically advantageous solution had to appear. Surprisingly, it has been shown that in a hydraulic drive 1 according to the invention for a pressure booster 2 of a high-pressure device, use of a constant-flow pump 20, driven by a servomotor 12, has advantages.
    Among other things, this is an extremely low pulsation of a high-pressure water steel, which causes no breaking even at the start of a breakthrough at 25 brittle materials, which can be achieved in particular by using an internal gear pump 11 for a hydraulic drive 1 of a pressure booster 2.
    A use of a hydraulic drive 1 according to the invention causes a low pulsation and in particular low pressure fluctuations in a stop / go operation of a system, which further increases the life of the high pressure components.
    In an advantageous manner, no movement takes place with closed high-pressure nozzles 4 * · ** · * · * ** of the servomotor and no power consumption thereof, wherein in a soft start of the hydraulic drive 1, the starting current consumption can be reduced. 5
    权利要求:
    Claims (4)
    [1]
    1. Hydraulic drive (1) with a volume and / or pressure control for a pressure booster of a high-pressure device, consisting essentially of a 5 motor drive with a pump for a pressure medium (10) and a controller, characterized in that as a hydraulic drive ( 1) essentially a constant-flow pump (11), or a pump (11), which requires a constant volume per revolution, driven by a servomotor (12) is used, which servo motor (12) low-pressure side means (13 ) and / or by 10 high-pressure side means (14) electrically (15) controllable, controllable and / or switchable.
    [2]
    2. Hydraulic drive (1) according to claim 1, characterized in that as constant-flow pump (11) an internal gear pump is used,
    [3]
    3. Hydraulic drive (1) according to claim 1 or 2, characterized in that the control of the motor in servo operation by a closed loop, which signals by low-pressure side means (13) in the hydraulic circuit and / or high-pressure side means (14) of the electrical control (15) of the high-pressure device can be fed. 20
    [4]
    4. Hydraulic drive (1) according to one of claims 1 to 3, characterized in that the servomotor is designed as a frequency-controlled drive motor. 25 Vienna, 30th December 2011 6
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    同族专利:
    公开号 | 公开日
    EP2610490A3|2014-04-02|
    US10302074B2|2019-05-28|
    AT512322B1|2013-09-15|
    EP2610490A2|2013-07-03|
    RU2531675C2|2014-10-27|
    US20130167951A1|2013-07-04|
    CA2798423C|2016-12-06|
    CA2798423A1|2013-06-30|
    RU2012157990A|2014-07-10|
    EP2610490B1|2015-07-15|
    JP2013139871A|2013-07-18|
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    法律状态:
    2021-02-15| PC| Change of the owner|Owner name: BFT GMBH, AT Effective date: 20201223 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA1909/2011A|AT512322B1|2011-12-30|2011-12-30|HYDRAULIC DRIVE FOR A PRESSURE TRANSLATOR|ATA1909/2011A| AT512322B1|2011-12-30|2011-12-30|HYDRAULIC DRIVE FOR A PRESSURE TRANSLATOR|
    US13/467,706| US10302074B2|2011-12-30|2012-05-09|Hydraulic drive for a pressure booster|
    JP2012267662A| JP2013139871A|2011-12-30|2012-11-20|Hydraulic drive device for pressure booster|
    EP12455007.0A| EP2610490B1|2011-12-30|2012-11-21|Hydraulic drive for a pressure tranducer|
    CA2798423A| CA2798423C|2011-12-30|2012-12-12|Hydraulic drive for a pressure booster|
    RU2012157990/06A| RU2531675C2|2011-12-30|2012-12-27|Hydraulic actuator for pressure transducer|
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