Status monitoring and failure diagnosis system for plunger pump

{
  "publication_number": "US11047379B1",
  "country": "US",
  "kind": "B1",
  "title": "Status monitoring and failure diagnosis system for plunger pump",
  "abstract": "Disclosed is a status monitoring and fault diagnosis system for a plunger pump, including a monitoring and fault diagnosis device. The monitoring and fault diagnosis device monitors and diagnoses a hydraulic end assembly of a plunger pump. The monitoring and fault diagnosis device further monitors and diagnoses a power end assembly and/or a reduction gearbox assembly. Beneficial effects: The diagnosis system monitors and diagnoses not only a hydraulic end assembly, but also a power end assembly and/or a reduction gearbox assembly, that is, an equipment fault can be accurately predetermined in time for an entire plunger pump, so that high-pressure, large-displacement, and continuous operation requirements on fracturing sites at present are better satisfied, and on-demand maintenance is adopted instead of regular examination and maintenance, thereby saving labor, time, and materials to achieve economic efficiency; problems can be found as soon as possible, so that emergencies are prevented, damages are reduced, and maintenance costs are reduced; the utilization of the plunger pump is improved; and the service life of the plunger pump is extended.",
  "claims": [
    "1. A status monitoring and fault diagnosis system for a plunger pump, comprising a monitoring and fault diagnosis device, wherein the monitoring and fault diagnosis device monitors and diagnoses a hydraulic end assembly of a plunger pump, and the monitoring and fault diagnosis device further monitors and diagnoses a power end assembly and/or a reduction gearbox assembly; and the monitoring and fault diagnosis device comprises a sensor, a data acquisition module, and a data analysis and diagnosis module, the sensor is used for monitoring, the data acquisition module is connected to the sensor, the data acquisition module is configured to transfer signals detected by the sensor to the data analysis and diagnosis module; and wherein the data analysis and diagnosis module comprises a data storage module, a data analysis and processing module, and a data and fault display module; the data storage module has functions of monitoring the setting of the parameters of the system, setting a storage strategy, and real-time storing test data; the data analysis and processing module analyzes and processes real-time test data, and outputs status information of parts of the plunger pump based on the analysis; and the data and fault display module is configured to provide viewing of real-time monitoring data information of the plunger pump, display the status information of the parts of the plunger pump, and display and prompt the fault alarm information of the plunger pump.",
    "2. The status monitoring and fault diagnosis system for a plunger pump according to claim 1, the sensor are a plurality of sensors, and the sensors comprise a temperature sensor, a vibration sensor, a pressure sensor, and a position sensor.",
    "3. The status monitoring and fault diagnosis system for a plunger pump according to claim 2, wherein the monitoring and fault diagnosis device monitors and diagnoses a crankshaft bearing of the power end assembly.",
    "4. The status monitoring and fault diagnosis system for a plunger pump according to claim 3, wherein sensors used for monitoring the crankshaft bearing are disposed on an outer surface of the crankshaft bearing, and the sensors used for monitoring the crankshaft bearing are a temperature sensor and a vibration sensor.",
    "5. The status monitoring and fault diagnosis system for a plunger pump according to claim 2, wherein the monitoring and fault diagnosis device monitors and diagnoses a crosshead mechanism of the power end assembly.",
    "6. The status monitoring and fault diagnosis system for a plunger pump according to claim 5, wherein sensors used for monitoring the crosshead mechanism are disposed on an outer surface of a crosshead case, and the sensors used for monitoring the crosshead mechanism are a temperature sensor and a vibration sensor.",
    "7. The status monitoring and fault diagnosis system for a plunger pump according to claim 2, wherein the monitoring and fault diagnosis device monitors and diagnoses a crankshaft of the power end assembly.",
    "8. The status monitoring and fault diagnosis system for a plunger pump according to claim 7, wherein a sensor used for monitoring the crankshaft is disposed on a side surface of a non-input end of the crankshaft, and the sensor used for monitoring the crankshaft is a position sensor.",
    "9. The status monitoring and fault diagnosis system for a plunger pump according to claim 2, wherein the monitoring and fault diagnosis of the hydraulic end assembly comprises monitoring and fault diagnosis of a valve case, a liquid inlet manifold, and a discharge manifold.",
    "10. The status monitoring and fault diagnosis system for a plunger pump according to claim 9, wherein the monitoring and fault diagnosis of the valve case further comprises monitoring and fault diagnosis of an upper valve and a lower valve.",
    "11. The status monitoring and fault diagnosis system for a plunger pump according to claim 10, wherein a sensor used for monitoring the upper valve and the lower valve is disposed on an outer surface of the valve case, and the sensor used for monitoring at the outer surface of the valve case is a vibration sensor.",
    "12. The status monitoring and fault diagnosis system for a plunger pump according to claim 11, wherein the number of the vibration sensors disposed on the outer surface of the valve case is set according to a specific number of cylinders of the plunger pump.",
    "13. The status monitoring and fault diagnosis system for a plunger pump according to claim 9, wherein a sensor used for monitoring the liquid inlet manifold is disposed on the liquid inlet manifold, and the sensor used for monitoring the liquid inlet manifold in real time is a pressure sensor.",
    "14. The status monitoring and fault diagnosis system for a plunger pump according to claim 9, wherein a sensor used for monitoring the discharge manifold is disposed on the discharge manifold, and the sensor used for monitoring the discharge manifold in real time is a pressure sensor.",
    "15. The status monitoring and fault diagnosis system for a plunger pump according to claim 2, wherein sensors used for monitoring the reduction gearbox assembly are disposed on an outer surface of the reduction gearbox assembly, and the sensors used for monitoring the reduction gearbox assembly are a temperature sensor and a vibration sensor."
  ],
  "description_excerpt": "The present invention relates to the technical field of plunger pumps, and specifically relates to a status monitoring and fault diagnosis system for a plunger pump.\n\nA plunger pump for fracturing in oil fields is equipment for pumping a fracturing medium at a high pressure in mining in oil and gas fields. A common plunger pump for fracturing in an oil field is a plunger-type reciprocating volumetric pump and mainly includes a power end assembly, a hydraulic end assembly, and a reduction gearbox assembly. The power end assembly includes a power end housing, a crankshaft, a connecting rod, a crosshead mechanism, a crosshead case, and a retainer, and the like. The hydraulic end assembly includes a valve case, a plunger, a suction valve, a discharge valve, and the like. A power source such as a diesel engine, an electric motor or a turbine engine supplies power to drive the reduction gearbox assembly and the power end assembly. The power end assembly drives the plunger to linearly reciprocate in a sealed cavity of the valve case of the hydraulic end assembly. The suction valve and the discharge valve alternately work in the valve case of the hydraulic end assembly to implement high-pressure pumping of a fracturing medium. The plunger pump pumps the fracturing medium into the stratum at a high pressure to press open the stratum to form a fracture for enhancing production and injection in oil and gas fields. Therefore, for all the mining in oil and gas fields, a plunger pump of fracturing equipment is a part that is most prone to fault.",
  "cpc": [
    "F04B 51/00",
    "E21B 43/26",
    "E21B 47/00",
    "F04B 1/053",
    "F04B 1/0538",
    "F04B 2201/12",
    "F04B 2205/02",
    "F04B 2205/04",
    "F04B 9/045",
    "G01M 13/021",
    "G01M 13/028",
    "G01M 13/045"
  ],
  "ipc": [
    "F04B 51/00",
    "G01M 13/021",
    "G01M 13/028",
    "G01M 13/045"
  ],
  "assignees": [
    "American Jereh International Corp"
  ],
  "inventors": [
    "Hailong Li",
    "Haiping Cui",
    "Haiping Xing",
    "Jixin Wang",
    "Peng Li",
    "Xiaobin Li"
  ],
  "filing_date": "2020-07-17",
  "publication_date": "2021-06-29",
  "grant_date": "2021-06-29",
  "priority_date": "2020-05-28",
  "application_number": "US-202016932289-A",
  "family_id": "71873550",
  "cited_by_count": 161,
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}