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公开(公告)号：US10113552B2
公开(公告)日：2018-10-30
申请号：US15293002
申请日：2016-10-13
Applicant: Caterpillar Inc.
Inventor： Yanchai Zhang , Maurice J. Dust , Zhaoxu Dong , Xuefei Hu
Abstract: A method, system, and apparatus to monitor health of a compressor are provided. The method, system, and apparatus include detecting whether the compressor has a fault associated using one or more of performance-based modeling and structure-based modeling of physical aspects associated with operation of the compressor; diagnosing any detected fault to determine the cause or causes of the fault; and evaluating each diagnosed fault to assess the significance of the fault. Data pertaining to the cause or causes of the fault and the significance of the fault is used to output health information corresponding to a health state or status of the compressor. The method, system, and apparatus also predict future health-related conditions of the compressor, and data pertaining to the predicted future health-related conditions is used to output health information corresponding to a future health state or status of the compressor.
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公开(公告)号：US20180209415A1
公开(公告)日：2018-07-26
申请号：US15412630
申请日：2017-01-23
Applicant: Caterpillar Inc.
Inventor： Yanchai Zhang , Zhijun Cai , Zhaoxu Dong , Xuefei Hu
CPC classification number: F04B51/00 , F04B15/04 , F04B17/05 , F04B17/06 , F04B19/22 , F04B49/02 , F04B49/06 , F04B49/103 , F04B2201/0203
Abstract: A pump monitoring and notification system for a hydraulic pump includes an accelerometer and a controller. The accelerometer is associated with the hydraulic pump and is disposed relative to the hydraulic pump to generate acceleration data indicative of acceleration of the hydraulic pump. The controller is configured to access a fault threshold, access a time threshold, and determine an acceleration of the accelerometer based upon the acceleration data from the accelerometer. The controller is further configured to determine an RMS average of the acceleration of the accelerometer based upon the acceleration of the hydraulic pump, compare the RMS average of the acceleration of the accelerometer to the fault threshold, and generate an alert signal when the RMS average of the acceleration of the accelerometer exceeds the fault threshold for a time period exceeding the time threshold.
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公开(公告)号：US20180202423A1
公开(公告)日：2018-07-19
申请号：US15410467
申请日：2017-01-19
Applicant: Caterpillar Inc.
Inventor： Yanchai Zhang , Zhijun Cai , Zhaoxu Dong
CPC classification number: F04B19/22 , F04B15/02 , F04B17/05 , F04B49/10 , F04B51/00 , F04B53/10 , F04B53/14 , F04B53/16 , F04B2201/0603 , F04B2205/05
Abstract: A pump for pumping fluid includes a pressure sensor disposed in the discharge outlet that communicates with a plurality of pumping chambers. The pressure sensor monitors the discharge pressure and transmits the discharge pressure to a logic device. The logic device is configured to analyze the discharge pressure verses time, determine a peak-to-peak amplitude associated with the discharge pressure verses time, and to detect a pressure spike corresponding to the maximum or high peak-to-peak amplitude. The pressure spike may correspond to uncharacteristic operation of a discharge valve or a suction valve associated with the pump.
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公开(公告)号：US20180040226A1
公开(公告)日：2018-02-08
申请号：US15229673
申请日：2016-08-05
Applicant: Caterpillar Inc.
Inventor： Yanchai Zhang , Zhaoxu Dong , Xuefei Hu
IPC: G08B21/18 , F04B11/00 , F04B49/06 , E21B43/267 , F04B17/05 , F04B53/14 , F04B53/16 , F04B51/00 , F04B49/10 , F04B53/22
CPC classification number: G08B21/182 , E21B43/267 , F04B11/0041 , F04B17/05 , F04B49/065 , F04B49/103 , F04B51/00 , F04B53/14 , F04B53/16 , F04B53/22 , F04B2205/02 , F04B2205/03
Abstract: Operating a pumping system includes moving a pumping element to transition liquid through the pump, and determining a value based at least in part upon inlet pressure and pumping speed that is indicative of a pressure of the liquid within a bore susceptible to cavitation. Pumping speed and/or inlet pressure can be varied responsive to the determined value to limit cavitation.
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公开(公告)号：US20170226998A1
公开(公告)日：2017-08-10
申请号：US15015339
申请日：2016-02-04
Applicant: Caterpillar Inc.
Inventor： Yanchai Zhang , Zhaoxu Dong , Xuefei Hu
IPC: F04B49/06 , F04B51/00 , F04B53/14 , F04B49/22 , F04B49/20 , F04B47/00 , F04B53/10 , F02B63/04 , E21B43/26 , F04B17/03
CPC classification number: F04B49/065 , F04B17/03 , F04B47/00 , F04B49/20 , F04B49/22 , F04B51/00 , F04B2205/02
Abstract: A pumping system for use in a well stimulation application includes a pump controlled by a controller, the controller operating to monitor operation of the pump and determine when cavitation is present or imminent in the pump. When cavitation is present, the controller automatically adjusts an operating condition of the pump reduce pump speed or increase a fluid pressure at the pump inlet.
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Patent Agency Ranking
公开(公告)号：US11499547B2
公开(公告)日：2022-11-15
申请号：US16802949
申请日：2020-02-27
Applicant: Caterpillar Inc.
Inventor： Yanchai Zhang , Zhijun Cai , Nathan S. Pauli , Zhaoxu Dong , Yong Sun , Xuefei Hu
Abstract: A hydraulic fracturing machine includes a pump failure detection system. The hydraulic fracturing machine includes a hydraulic fracturing pump with a power end and a fluid end. The power end includes a plurality of roller bearings, and the fluid end includes a flow of fluid. A particle sensor coupled to the power end is configured to transmit particle information regarding a quantity of particles in the fluid. A temperature sensor, also coupled to the power end, is configured to transmit temperature information regarding a temperature of the fluid. A vibration sensor coupled to the power end is configured to transmit vibration information regarding a vibration of each of the plurality of roller bearings. An electronic control module analyzes the particle information, the temperature information and the vibration information, and calculates a failure warning level based on the analysis.
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公开(公告)号：US10890061B2
公开(公告)日：2021-01-12
申请号：US16110684
申请日：2018-08-23
Applicant: Caterpillar Inc.
Inventor： Zhijun Cai , Yanchai Zhang , Zhaoxu Dong
IPC: E21B47/008 , F16K37/00 , E21B43/26 , G01M13/003 , E21B43/12
Abstract: A rig management system is disclosed. The rig management system may gather, from a set of sensors, data that includes: vibration data related to vibration of a valve associated with a pump of a hydraulic fracturing rig during operation of the pump, and pump speed data related to a speed of the pump during operation of the pump. The rig management system may process the data to identify a trend related to the vibration data, wherein the vibration data has been normalized based on the pump speed data. The rig management system may determine a remaining useful life of the valve based on the trend and threshold data that identifies a set of thresholds related to the vibration of the valve. The rig management system may determine that the remaining useful life satisfies a threshold. The rig management system may schedule an operation to be performed on the valve.
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公开(公告)号：US10378537B2
公开(公告)日：2019-08-13
申请号：US15287416
申请日：2016-10-06
Applicant: Caterpillar Inc.
Inventor： Yanchai Zhang , Venkata Bhagavathi Dandibhotla , Zhijun Cai , Zhaoxu Dong , Xuefei Hu
Abstract: A method for detecting a leak in a pump comprises: monitoring discharge pressure time domain signals of the pump; monitoring piston position time domain signals for each piston of a plurality of pistons; filtering the monitored discharge pressure time domain signals and the monitored piston position time domain signals of each piston of the plurality of pistons via a band pass filter; determining, at each pump revolution for each piston, a sum of product of the filtered discharge pressure time domain signals and the filtered piston position time domain signals; determine, at each pump revolution for each piston, an absolute value of each sum; determining, at each pump revolution, a largest absolute value of the determined absolute values; determining a corresponding piston of the plurality of pistons associated with the largest absolute value; and determining a cylinder of the pump associated with the determined corresponding piston as leaking.
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公开(公告)号：US10247182B2
公开(公告)日：2019-04-02
申请号：US15015339
申请日：2016-02-04
Applicant: Caterpillar Inc.
Inventor： Yanchai Zhang , Zhaoxu Dong , Xuefei Hu
Abstract: A pumping system for use in a well stimulation application includes a pump controlled by a controller, the controller operating to monitor operation of the pump and determine when cavitation is present or imminent in the pump. When cavitation is present, the controller automatically adjusts an operating condition of the pump reduce pump speed or increase a fluid pressure at the pump inlet.
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公开(公告)号：US10047741B2
公开(公告)日：2018-08-14
申请号：US15240581
申请日：2016-08-18
Applicant: Caterpillar Inc.
Inventor： Yanchai Zhang , Daryl Belshan , Vijay Janardhan , Zhaoxu Dong
Abstract: A monitoring system for a fluid pump having a fluid end and a power end is provided. The monitoring system includes an inlet pressure sensor attached to an inlet manifold of the fluid end. The inlet pressure sensor generates a signal indicative of an inlet pressure of a fluid being supplied to the fluid end. The monitoring system includes a discharge pressure sensor attached to the fluid end. The discharge pressure sensor generates a signal indicative of a discharge pressure of the fluid exiting the fluid end. The monitoring system includes at least one accelerometer attached to the fluid end. The accelerometer generates a signal indicative of vibrational data of the fluid pump. The monitoring system includes a controller which receives signals from the inlet pressure sensor, the discharge pressure sensor and the accelerometer and determines a possible failure mode of the fluid pump.
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