Abstract:
PROBLEM TO BE SOLVED: To facilitate detection of solution obstacle, and a low-quality performance of various components of a pump. SOLUTION: In a test mode, a control means 261 places either of first and second pumping chambers 235a, 235b under a pressure, places such a sending device in a communicated state of fluid through a check valve on the opposite side under the pressure to the pumping chamber, instructs either of two motors 235a, 235b to go into a pumping mode enabling a test of outlet check valves 239a, 239b of the pumping chamber on the opposite side, furthermore places one motor in a pumping mode, and then places the other motor in the pumping mode, to thereby enable the test of the two outlet check valves. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
An electric diaphragm pump having a pump head assembly in a first housing, a motor assembly in a second housing, a fluid sensor, and a leak alert system and/or pump shut-off system. The fluid sensor detects a presence of fluid which has leaked outside of a pump chamber and is located within a cavity of the diaphragm drive chamber. The leak alert system indicates that fluid has been detected by the fluid sensor and the shut-off control system stops operation of the pump based on fluid being detected by the fluid sensor.
Abstract:
A method for detection of a fluid leak related to at least one piston machine (1), where the method includes: —attaching a pressure sensor (18, 24) to at least a pressure side of the at least one piston machine (1); —measuring the pressure on the pressure side of the at least one piston machine (1); —attaching a transmitter (28) to the at least one piston machine (1), said transmitter (28) rendering a signal for calculating the rotational speed of the at least one piston machine (1); —calculating the speed of the at least one piston machine (1); —calculating the sum of nominal flow rates from all piston machines (1); —calculating a flow rate compensation factor; —calculating a normalized pressure (42) to be equal to the discharge pressure multiplied by the said compensation factor for the flow rate; and —monitoring the normalized pressure (42) to detect a leakage.
Abstract:
A sealing system for a pump includes a housing having an internal chamber adapted to receive a portion of a plunger. A primary seal is translatable within the chamber in sealing relation with the housing. The primary seal includes first and second elastomeric members adapted to sealingly engage the plunger. The first and second elastomeric members are spaced apart from one another a distance greater than or equal to a maximum stroke of the plunger. A secondary seal is spaced apart from the primary seal and adapted to sealingly engage the plunger. A chamber contains a barrier fluid in contact with the primary seal and the secondary seal. A pressurizing device maintains a pressure of barrier fluid at a magnitude greater than a peak pressure of a fluid pumped by the plunger such that the pumped fluid is restricted from entering the barrier fluid chamber.
Abstract:
A sealing system for a pump having a plunger includes a housing having an internal chamber adapted to receive a portion of the plunger. Primary and secondary seals are located within the internal chamber and adapted to sealingly engage the plunger. The primary seal communicates with the fluid being pumped. A barrier fluid chamber contains a barrier fluid in contact with the primary seal and the secondary seal. A pressure referencing device has an inlet port in communication with the pumped fluid and an outlet port providing fluid at a pressure magnitude equal to a peak pressure of the pumped fluid. A pressurizing device is in communication with the fluid at the peak pressure and the barrier fluid to maintain the barrier fluid pressure at a magnitude greater than the peak pressure of the pumped fluid such that the pumped fluid is restricted from leaking past the primary seal.
Abstract:
A diaphragm failure monitoring system for detecting leakage in a diaphragm of a diaphragm pump. The system includes a pump having an operating chamber containing a working fluid and a pumping chamber for pumping material into and out of the pump and a diaphragm separating the operating and pumping chambers. A first optic fiber is joined to the operating chamber for transmitting an optic signal across the working fluid. A second optic fiber is joined to the operating chamber for receiving the optic signal from the first optic fiber. An electric signal establishing device establishes a first electrical signal when the optic signal from the first optic fiber to the second optic fiber passes through uncontaminated working fluid. The electric signal establishing device establishes a second electrical signal when the optic signal from the first optic fiber to the second optic fiber passes through contaminated working fluid, whereby leakage of a contaminating material through the diaphragm into the operating chamber can be detected when the second electrical signal is established.
Abstract:
In a combination of an oil well pumping unit with sucker rods and the like, a self aligning stuffing box and well head seal to accommodate misalignment of the rods and tubing. The self aligning stuffing box structure includes a body member on a well tubing and a rod guide member mounted on the body member for limited universal movement. A guide extension is on the rod guide member and has a bore and an enlarged chamber. A rod extends through the guide extension bore and chamber, guide member, and body member into the oil well. Packing or seals in the guide extension sealingly engages the rod above and below the chamber to provide operative seals. Pressure sensitive members communicate with the guide member below the packing or seals therein to indicate fluid pressure in the chamber. Liquid pressure responsive structure communicates with the chamber and provides a signal in the event liquid accumulates in the chamber above a predetermined pressure; as by flowing through the packing or seals below the chamber.
Abstract:
A system monitors operation of a component in a hydraulic fracturing fleet. A sensor exposed to an external environment of the component is configured to detect external indicia of the operation of the component. Memory stores an artificial intelligence (AI) model, the AI model being trained to monitor the operation of the component in the system. One or more processors are operatively coupled to the memory and the sensor. The one or more processors are configured to obtain data of the external indicia detected with the sensor; input the obtained data into the AI model; detect, with the AI model and based on the input data of the external indicia, one of a plurality of predetermined states corresponding to the operation of the component; and perform a predetermined function based on the detected one of the plurality of predetermined states.
Abstract:
A system monitors operation of a component in a hydraulic fracturing fleet. A sensor exposed to an external environment of the component is configured to detect external indicia of the operation of the component. Memory stores an artificial intelligence (AI) model, the AI model being trained to monitor the operation of the component in the system. One or more processors are operatively coupled to the memory and the sensor. The one or more processors are configured to obtain data of the external indicia detected with the sensor; input the obtained data into the AI model; detect, with the AI model and based on the input data of the external indicia, one of a plurality of predetermined states corresponding to the operation of the component; and perform a predetermined function based on the detected one of the plurality of predetermined states.