3814results about "Pump testing" patented technology

A power pump performance analysis system includes a signal processor connected to pressure sensors for sensing pressures in the cylinder chambers and inlet and discharge piping of a single or multi-cylinder pump. Pump speed and piston position are determined by a crankshaft position sensor. Pump vibration, fluid temperatures, and power input may also be measured by sensors connected to the processor. Performance analyses, including determination of pump volumetric efficiency, mechanical efficiency, suction and discharge valve sealing delay, valve and piston seal leakage, flow induced pressure variations, acceleration induced pressure detection, hydraulic resonance detection and pulsation dampener performance may be measured and selected parameters displayed on a visual display connected to the processor directly or via a network.

The invention relates to an eccentric pump vibration accidence fusion diagnose method and relative vibration signal collector, wherein said invention is characterized in that: it uses the eccentric pump vibration signal collector to collect the normal state, the quantity imbalance, asymmetry rotate and loose base of eccentric pump; uses wavelet decomposition and reconstruction to extract the character of vibration signal; and inputs the character vectors into sub fuzzy neural networks I and II; to be treated and replace the relation factor matched with sensor signal function; the whole fuzzy neural network comprises data fuzzy layer, input layer, hidden layer and output layer; uses D-S theory to obtain the fused signal function distribution, realize the fusion diagnose on normal state, quantity imbalance, asymmetry rotate and loose base. The invention has simple structure and high effect.

Systems and methods for monitoring operation of a pump, including verifying operation or actions of a pump, are disclosed. A baseline profile for one or more parameters of a pump may be established. An operating profile may then be created by recording one or more values for the same set of parameters during subsequent operation of the pump. A value for a goodness of fit measure comparing the operating profile and baseline profile can be established. If the goodness of fit measure is insufficient, an alarm may be sent or another action taken, for example the pumping system may shut down, etc. An example goodness of fit measure is an R-squared measure.

A system and method for predicting impending pump failure in a hydraulic system is disclosed. The system measures and compares the running and moving volumetric deficiencies of the hydraulic system as a whole and if they are not within range of each other by a predetermined threshold, the system determines that at least one of the pumps in the system is about to fail. If such a determination is made by the system, the pump displacement is at standby of each pump is then calculated and the pump with the greatest displacement at standby is determined to be the pump approaching failure. Once the pump approaching failure is identified, a signal is generated to apprise the operator or other entity to enable corrective action to be taken.

A hydraulic fracturing system for fracturing a subterranean formation including a pump in communication via pump components with a wellbore that intersects the formation, and that pressurizes fluid in the wellbore, the fluid comprising a fracturing fluid slurry. The system further includes hydraulic fracturing system components for making the fracturing fluid slurry, and a monitoring system that selectively captures and transmits real time images of at least one of the hydraulic fracturing system components or pump components to enable remote monitoring of the at least one of the hydraulic fracturing system components or pump components.

In a hydraulic machine, hydraulic pump failure is detected and the pump lifespan is estimated before the pump failure occurs. The discharge pressure 122, oil temperature 126, and drain filter differential pressure 120 are measured, a correlative relationship 128 between the filter differential pressure and the discharge pressure is determined, and a representative filter differential pressure 130 is calculated from this correlative relationship. Using an oil temperature-differential pressure correlation function, the representative differential pressure value 130 is corrected so that the variable component 132 caused by the oil temperature 126 is eliminated therefrom. The long-term trend and the short-term trend of the increase over time of the corrected differential pressure is calculated. A pump failure is predicted or the pump lifespan is estimated based on the degree of deviation between the long-term trend and the short-term trend.

The invention discloses a reciprocating-type compressor fault diagnosis method based on multi-sensor information fusion, and the method is characterized by comprising the following steps of 1, collecting data; 2, constructing a fault characteristic sub-space and a fault space; 3, obtaining a fault diagnosis network; 4, acquiring characteristic fusion diagnosis results; and 5, carrying out D-S evidence theory decision-level fusion diagnosis, and giving out a decision-level diagnosis result. The method has the advantages of convenience in application, high diagnosis accuracy and applicability to a production site of reciprocating-type compressors of petroleum chemical industrial enterprises.

A performance testing device for a piston shoe in an axial plunger pump belongs to the technical field of hydraulic elements, and solves the problems that in the prior art a simulator is adopted to carry out the simulation test on the performance parameter of the piston shoe in the plunger pump, the test result has errors, and a piston shoe pair is difficult to be isolated from other friction component pairs when the performance parameter test is carried out in the piston shoe in a practical pump. The performance testing device for the piston shoe in the axial plunger pump comprises a piston shoe, and further comprises a variable frequency motor, a rotating speed and torque sensor, a variable device, a hydraulic cylinder body, a plunger, a flowmeter, a pressure gauge, an oil box and a temperature sensor, wherein the coupling plate of the variable device is fixedly connected with a bottom plate of a support tile of a swash plate through a bolt, the swash plate is supported by the support tile of the swash plate, three screwed holes on each fastening splint are connected with three corresponding screwed holes on one side of the swash plate through the bolts, a waist-shaped slot on each fastening splint corresponds to and is connected with the screwed hole on the side wall of the support tile of the swash plate through bolts, so the swash plate can swing in the support tile of the swash plate. The performance testing device for the piston shoe in the axial plunger pump is used for testing the performance of the piston shoe in the axial plunger pump.

An automated system for monitoring and testing a sump pump installation includes an electrically-actuated valve which admits liquid to the liquid container in response to a valve control signal. A test control module includes a test control circuit which when actuated supplies a valve control signal to initiate a test cycle during which liquid is admitted to the container to cause the liquid level in the container to rise, after which the sump pump discharges liquid from the container until a predetermined event terminates the test cycle. An indicator circuit indicates in response to completion of the test cycle whether the test was successful or unsuccessful. A communications circuit is included which receives and verifies control signals addressed to the system from an external originator to allow a test cycle to be remotely initiated in the event of impending severe weather or other threats.

The invention relates to an integrated testing system for aviation fuel accessories. The integrated testing system comprises an electric control cabinet, a mechanical operating platform, an integrated pump station, a flow proportion testing platform, a pneumatic testing system and a fuel testing system, wherein the mechanical operating platform is connected with a pressurizing oil delivery gas storage tank through the pneumatic testing system; the integrated pump station is connected with the fuel testing system through an oil delivery pipeline; the pneumatic testing system is connected with the fuel testing system through a pneumatic pipeline; the flow proportion testing platform is connected with a pressure refueling joint testing oil tank; and the electric control cabinet is electrically connected with the mechanical operating platform, the integrated pump station, the flow proportion testing platform, the pneumatic testing system, the fuel testing system, the pressurizing oil delivery gas storage tank and the pressure refueling joint testing oil tank. The integrated testing system can perform performance test on all accessories of an aircraft fuel system, is high in integrity,convenient to maintain, compact in structure, small in occupation area and low in cost and expenditure, and is in accordance with specific using environment and support conditions under the field condition of an aviation equipment support army.

The invention discloses an airborne hydraulic pump source fault diagnosis system based on a DSP, comprising a data acquisition system, a signal conditioning system, a signal processing system, a host computer display system, a power supply system and a constant flow source module; wherein, the signal processing system consists of an A/D converting system and a DSP system; a DSP TMS 320F2812 chip is selected by a DSP data processing system, and fault diagnosis is carried out on an airplane pumping source system in the signal processing system, finally, the data mode and diagnosis results are transmitted into the host computer display system to be displayed by a CAN bus. The invention adopts the embedded DSP system with small volume and high reliability, adapts to flexibility requirement on the airplane and meets the special requirements of the airborne fault diagnosis system, thus improving the real-time property and accuracy of the fault diagnosis system.

The invention discloses a multifunctional testing table for property and application of a liquid and gas jet pump and belongs to the technical field of ejecting. The multifunctional testing table is composed of a testing system and a medicine feeding system. The testing system comprises a main water tank, a centrifugal pump unit, the liquid and gas jet pump, a testing parameter measuring instrument, a connection pipeline and a gate valve. The medicine feeding system is formed by a main water tank, a centrifugal pump unit, a medicine feeding box, a liquid and liquid jet pump, a pipeline and a gate valve. The multifunctional testing table can perform liquid and gas jet pump performance testing and can perform simulation study on structural size optimization and actual application of the liquid and gas jet pump by utilizing waste gas absorbing simulation experiments and oxygenating aeration experiments of the liquid and gas jet pump.

The invention discloses a hierarchical cluster aviation pump multiple fault diagnostic method based on frequency multiplication relative energy sum. In the method, firstly fault mode effect influence analysis technology is used for carrying out sensor optimal distribution on an aviation hydraulic pump and acquiring sensor signal; then common faults of the aviation hydraulic pump are classified by hierarchical cluster to determine the sequence and hierarchy of fault diagnosis; and finally fault diagnosis of a first diagnosis layer, a second diagnosis layer and a third diagnosis layer is carried out to complete the multiple fault diagnosis on the aviation pump. The method realizes the multiple fault diagnosis of the aviation pump with high accuracy; a extraction method of fault feature and frequency doubling relative energy sum is designed aiming that typical gradual fault of the aviation hydraulic pump is extremely weak at fault initial signature, the method can effectively realize the fault feature extraction of weak signal, and the method is proved to be accurate and efficient by plenty of experiments.