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    • 12. 发明申请
    • HYDRAULIC ACCUMULATOR PRE-CHARGE PRESSURE DETECTION
    • 液压蓄能器预充压力检测
    • WO2013142541A3
    • 2013-11-14
    • PCT/US2013033040
    • 2013-03-20
    • CATERPILLAR INC
    • CHEN DAYAOMA PENGFEISHANG TONGLINHILLMAN BRYAN J
    • F15B1/10F15B1/04
    • F15B1/08F15B19/005F15B2201/31F15B2201/505F15B2201/51
    • A system (100) including a hydraulic accumulator (102), a pressure sensor (104), a fluid source (106) and a data processor (108) to detect a pre- charge pressure is provided. The hydraulic accumulator (102) includes first and second chambers (302, 304) and a separator (306) therebetween. The hydraulic accumulator (102) has an associated pre-charge pressure. The pressure sensor (104) coupled to the first chamber (302). The data processor (108) is configured to receive pressure readings from the pressure sensor (104). The data processor (108) is configured to determine a first and second rate of pressure changes, and a transition pressure between the first and second rates. The approximate pre- charge pressure is determined based on the transition pressure.
    • 提供了包括液压蓄能器(102),压力传感器(104),流体源(106)和数据处理器(108)以检测预充压力的系统(100)。 液压蓄能器(102)包括第一和第二腔室(302,304)以及其间的分离器(306)。 液压蓄能器(102)具有相关的预充压力。 压力传感器(104)耦合到第一腔室(302)。 数据处理器(108)被配置为接收来自压力传感器(104)的压力读数。 数据处理器(108)配置成确定第一和第二压力变化速率以及第一和第二速率之间的转换压力。 近似的预充压力基于过渡压力确定。
    • 16. 发明授权
    • Hydraulic accumulator health diagnosis
    • 液压蓄能器健康诊断
    • US09366269B2
    • 2016-06-14
    • US13427095
    • 2012-03-22
    • Dayao ChenPengfei MaTonglin ShangBryan J. Hillman
    • Dayao ChenPengfei MaTonglin ShangBryan J. Hillman
    • G01F17/00G01M3/02F15B1/033
    • F15B1/033F15B2201/505F15B2201/51
    • A system to diagnose a health of a hydraulic accumulator is provided. The hydraulic accumulator includes a first fluid chamber, a second fluid chamber, and a separator. The hydraulic accumulator has an associated pre-charge pressure. The system further includes a pressure sensor, a fluid source, a data processor, and a comparator. The pressure sensor and the fluid source are connected to the first fluid chamber. The data processor is configured to determine a first and second rate of pressure changes, and a transition pressure between the first and second rates. The approximate pre-charge pressure is determined based on the transition pressure. The comparator is configured to compare at least one of the determined pre charge pressure and the frictional forces with a pre-determined threshold range of pre-charge pressure and the frictional forces associated with the hydraulic accumulator to diagnose the health of the hydraulic accumulator.
    • 提供了一种用于诊断液压蓄能器健康的系统。 液压蓄能器包括第一流体室,第二流体室和分离器。 液压蓄能器具有相关的预充压力。 该系统还包括压力传感器,流体源,数据处理器和比较器。 压力传感器和流体源连接到第一流体室。 数据处理器被配置为确定压力变化的第一和第二速率以及第一和第二速率之间的过渡压力。 基于过渡压力确定近似预充压力。 比较器被配置为将所确定的预充气压力和摩擦力中的至少一个与预充压力的预定阈值范围和与液压蓄能器相关联的摩擦力进行比较,以诊断液压蓄能器的健康状况。
    • 17. 发明申请
    • SYSTEM AND METHOD OF DETERMINING ACCUMULATOR STATUS
    • 确定累加器状态的系统和方法
    • US20150217747A1
    • 2015-08-06
    • US14527930
    • 2014-10-30
    • GOODRICH CORPORATION
    • Eric D. CahillPaul R. Burte
    • B60T17/22B60T13/14
    • B60T17/221B60T13/14F15B1/24F15B19/005F15B2201/205F15B2201/31F15B2201/505F15B2201/51
    • A method of detecting an accumulator failure is provided. The method may comprise measuring a first pressure on a gas-side of an accumulator, measuring a second pressure on a fluid-side of the accumulator, finding a difference between the first pressure and the second pressure, and comparing the difference to a predetermined threshold. A system for detecting an accumulator failure is also provided. The system may comprise a non-transitory memory communicating with a processor, the non-transitory memory having instructions stored thereon that, in response to execution by the processor, cause the processor to perform operations. The operations may include receiving a first pressure measurement, receiving a second pressure measurement, determining a difference between the first pressure measurement and the second pressure measurement, and detecting the accumulator failure based on the difference.
    • 提供了一种检测蓄电池故障的方法。 该方法可以包括测量蓄能器的气体侧上的第一压力,测量蓄能器的流体侧上的第二压力,找到第一压力和第二压力之间的差,并将差值与预定阈值进行比较 。 还提供了一种用于检测蓄电池故障的系统。 系统可以包括与处理器通信的非暂时性存储器,其中存储有指令的非瞬态存储器响应于处理器的执行使得处理器执行操作。 操作可以包括接收第一压力测量值,接收第二压力测量值,确定第一压力测量值和第二压力测量值之间的差值,以及基于该差值来检测累加器故障。
    • 18. 发明授权
    • Ultrasound testing device for gas pressure accumulators
    • 气压蓄能器超声波检测装置
    • US5520053A
    • 1996-05-28
    • US374720
    • 1995-01-27
    • Norbert WeberKarl-Heinz Leichner
    • Norbert WeberKarl-Heinz Leichner
    • G01L11/00F15B1/08F15B1/24F15B19/00
    • F15B19/00F15B1/08F15B2201/205F15B2201/312F15B2201/41F15B2201/415F15B2201/505
    • An ultrasound testing device for gas pressure accumulators is used to test a predeterminable set position that can be taken by a movable separating element inside an accumulator filled with gas and connected to a fluid circuit. The separating element has at least one testing body associated with a visible mark which indicates the set position of the separating element. An ultrasound testing device on a testing body can be set on the accumulator in alignment with the visible mark. This testing device allows a plurality of accumulators of the same type to be tested for their predeterminable gas pressure set value, which corresponds to the gas pre-filling pressure, by a single hand apparatus. This kind of test is economical and achieves reliable results.
    • PCT No.PCT / EP93 / 01964。 371日期:1995年1月27日 102(e)日期1995年1月27日PCT提交1993年7月23日PCT公布。 出版物WO94 / 04898 日期为1994年3月3日。用于气体压力蓄能器的超声波测试装置用于测试可由可充分气体的蓄能器内的可移动分离元件采取的连接到流体回路的可预定的设定位置。 分离元件具有与可见标记相关联的至少一个测试体,其指示分离元件的设定位置。 测试体上的超声波检测装置可以设置在与可见标记对准的蓄电池上。 该测试装置允许通过单手装置测试相同类型的多个蓄能器对应于气体预充压力的可预定气体压力设定值。 这种测试是经济的并且可以获得可靠的结果。