1878results 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.

The invention relates to a performance testing device and method for seawater hydraulic pump in deep sea high back pressure environment. The performance testing device mainly comprises a deep sea stimulation cabin, a pressurizing system, a circulating water cooling pipeline, and a monitoring and controlling system; the deep sea stimulation cabin provides back pressures to be borne in environments at different water depths for the performance test of the seawater hydraulic pump through the pressurizing system; stimulation load of the seawater hydraulic pump is freely adjusted by a high-pressure flow control valve which is mounted in the circulating water cooling pipeline; the circulating water cooling pipeline can prevent temperature rise of water in the cabin caused by transformation of the hydraulic energy generated by the working seawater hydraulic pump to the heat energy after the high-pressure flow control valve is uploaded; the monitoring and controlling system can control test working conditions of the seawater hydraulic pump and acquire test parameters such as temperature, pressure and flow. The testing device can stimulate the back pressure environment at an appointed sea depth and realize performance test on the seawater hydraulic pump.

The invention discloses a state analysis monitoring system of a gas compressor. The state analysis monitoring system comprises a gas pressure sensor, a temperature sensor, a signal conditioner, an engine oil pressure sensor, a vibration sensor, a vibration meter, a data collection card, a display and a computer. The invention further discloses a state analysis monitoring method of the gas compressor. In the state analysis monitoring method, a gas pressure signal, a temperature signal, an engine oil pressure signal and a vibration signal are input into the computer and are processed through the following steps of: comparing the signals with the upper limits and the lower limits of preset safe values, if the upper limits or the lower limits are exceeded, alarming and starting a failure diagnosis module at the same time; querying a gas compressor state parameter exception and failure mapping table in a failure diagnosis module to determine a corresponding exceptional component type; querying the historical maintenance record of each component in the exceptional component type in a database; calculating service life values of different components corresponding to the exceptional stateparameters; and checking from the component with a minimum service life value to the component with a maximum service life value in sequence until the fault component is found out, thereby finishing the state analysis monitoring.

The invention discloses a reciprocating compressor fault diagnosis system and method based on a neural network algorithm. The reciprocating compressor fault diagnosis system and method based on the neural network algorithm comprises a field communication module, a data collecting module, a simulation model based on neural networks, an expert system module based on standard fault characteristics, afault diagnosis main machine and an upper computer. According to the reciprocating compressor fault diagnosis system and method based on the neural network algorithm, the neural network algorithm isutilized, measured compressor system status parameters are combined, and thus simulation models in all working conditions are acquired; compressor faults are simulated by changing system parameters tocalculate and obtain the standard fault characteristics, after the abnormal operation of the compressor occurs, through the comparison with the standard fault characteristics, fault parts can be accurately located, and elimination methods can be brought; and the diagnosis success rate is high, and real-time monitoring analysis of high precision equipment is not needed, and the diagnosis cost is lowered.

There are provided a vacuum pump self-diagnosis method, a vacuum pump self-diagnosis system, a vacuum pump central monitoring system capable of making self-diagnosis of a dry vacuum pump. A vacuum pump self-diagnosis method decides the occurrence of failure and generates an alarm when a predetermined alarm set value is exceeded by an integrated value or an average value of a current of a motor for rotating a rotor of said vacuum pump. In a vacuum pump self-diagnosis system for making self-diagnosis of a vacuum pump which comprises a casing and a rotor rotatably arranged in the casing for sucking and discharging a gas through rotations of the rotor, the rotor comprises a plurality of stages and a pressure sensor is provided between the rotor stages. A self-diagnosis unit is provided for calculating an integrated value or an average value of a current of a motor for rotating said rotor, and making self-diagnosis of the vacuum pump when the integrated value or average value exceeds a predetermined alarm set value. The self-diagnosis unit switches from one self-diagnosis calculation method to another or interrupts the self-diagnosis calculation based on a pressure value detected by said pressure sensor.

The invention relates to a reciprocating compressor sensitive characteristic extracting and fault diagnosis method based on the internet of things. Aiming at the current situation that actual early warning parameters and fault diagnosis of an existing reciprocating compressor are short of effective association, on the basis of a reciprocating compressor online monitoring and diagnosis system based on the internet of things technology, the internal correspondence of faults and features is found out through the typical fault mechanism research, and the reciprocating compressor fault diagnosis method adopting fault sensitive feature parameter extraction is provided. Sensitive feature parameters corresponding to different faults are extracted aiming at fault case data of the reciprocating compressor, and a fault sensitive feature parameter set is formed; by the adoption of different intelligent classification algorithms, an automatic fault classifier is built on the basis of the fault sensitive feature parameter set, and automatic diagnosis of unit faults is achieved.

The invention discloses a method for diagnosing a heat radiation system, comprising the steps of obtaining a temperature value related to a heat resistance value during the normal working of the heat radiation system, figuring out a temperature value related to a designed ideal heat resistance value according to a mathematical model of the system by using the power loss of the system; comparing the obtained value with the calculated value; and determining that the heat radiation system works abnormally if the difference between the obtained value and the calculated value exceeds a preset threshold. Therefore, by using the method disclosed by the invention, the working status of the heat radiation system can be determined in advance so that maintenance and repairing are arranged for the heat radiation system according to working.

A system for measuring real time efficiency/performance of at least one pump in a plant or other facility includes a plurality of monitoring devices disposed in relation to said at least one pump to measure power usage, pump speed and flow characteristics of the at least one pump. A processing system is configured to receive input signals from the sensors in which the efficiency of the at least one pump can be calculated based on the sensor inputs in real-time. The processing system can also compare the calculated pump efficiency values with a user defined set point or threshold or compare to the expected pump performance.

The invention discloses an automatic calibration method for a sensor of a breathing machine. The method comprises the following steps that: a gas flow analyzer is connected with a breathing machine gas channel and communicates with a personal computer (PC), the breathing machine communicates with the PC, a plurality of data sampling spots are set, a calibration command is transmitted at each data sampling spot by the computer, the gas flow analyzer and the breathing machine receive the calibration commands and automatically reply with monitored parameter values, received sampling spot data and a breathing machine average deviation (AD) value are analyzed by the computer, a calibration curve is automatically drawn, and a final calibration result is transmitted to the breathing machine.

A system for measuring the weight of a seat occupant is used to control airbag deployment. The system includes a seat bottom that receives a vertical seat occupant weight force. The seat is divided into four quadrants, a front right quadrant, a left front quadrant, a left rear quadrant, and a right rear quadrant. Each quadrant includes a sensor that generates a weight signal corresponding in magnitude to the seat occupant weight in the respective quadrant. Each weight signal is comprised of a vertical force component and an error component induced by braking or deceleration forces acting on the seat bottom in a non-vertical direction. The sensors are orientated within their respective quadrants such that two sensors generate a positive error reading and two sensors generate a negative error reading. When the weight signals from each quadrant are added together to determine the total seat occupant weight, the error is eliminated as the positive and negative error components cancel each other out. The seat occupant weight is determined by adding the vertical force components from each of the weight signals together.

The invention relates to an emulsion pump testing system, comprising an electrical apparatus control system which is used for driving a motor to start or stop, a transmission box connected with a tested pump, an emulsion pump circulating system and a hydraulic oil circulating system for driving the transmission box; the working load of the tested pump is changed by adjusting the discharging amount of an oil hydraulic motor, hydraulic pressure output by the tested pump is compensated to the oil hydraulic motor mostly by a loading cylinder, namely, the oil hydraulic motor is not only a driving force source of the tested pump, but also is a load of the tested pump; the system can carry out reliability detecting test to the emulsion pump with different type and different power, and the comprehensive performance and manufacturing quality of the emulsion pump are detected in an on-line way, therefore, the occupying area of the equipment is not only reduced, but also the operating power can not be converted into heat energy, so as to reduce the operating cost; the most important point is that the power can be recycled, the energy consumption is greatly reduced; compared with the prior art, the energy saving can reach about 70 percent, the structure is simple and energy-saving, and has good using effect.

Air-blowing or air-breathing compressor cascade experimental system relates to an experimental installation of testing compressor cascade. The present invention solves the problem of prior test equipment can not test inner flowing in air-blowing or air-breathing compressor cascade. The right and left two ends between said top plate (7) and bottom plate (8) are equipped with at least one solid blade (9) separately, three hollow blades (10) are installed between the top plate (7) and the bottom plate (8) in said solid blade (9), said upper Air-blowing/air-breathing interface (11-1) are installed on the top horizontal section of each hollow blades (10), said lower Air-blowing/air-breathing interface (11-2) are installed on the bottom horizontal section of each hollow blades (10), said probe (12) is installed between the top plate (7) and the bottom plate (8). The invention can be considered as the simplified model of carefully analysis of three-dimensional flow field structure and the aerodynamic performance in compressor cascade, it is the effective approach of the searching of compressor performance improvements.

The invention provides an operation characteristics and operation energy efficiency analyzing device of an industrial circulating water pump set, in order to solve the problem that the operation characteristics and the operation energy efficiency of the water pump during operation can not be monitored and analyzed continuously by the existing industrial circulating water system. The device comprises a water pump characteristic analyzing and water pump characteristic server (a computer), a basic data collecting system (a sensor, an A/D (analog to digital) converter), a communication system (remote service), an auxiliary appliance (a cable, a data line connector and the like), a water pump operation characteristic database, a data interactive system and a data interface. On the basis of the data access, the device can completely operate independently; according to the status of the actual flow, the device also can act as an independent functional module derived on the basis of the original monitor system; and the method provided by the invention not only guarantees the smooth operation of the technological process, but also enables the water pump operation point to be close to the actual operation working condition maximally, and is a method for rapidly constructing an efficient operating mechanism of the water pump.

A test and monitoring system for a sump pump installation of the type having two electrically-powered pumps in a sump container wherein each, when actuated by rising liquid in the container, pump water from the container to a dispersal site. A test control module initiates a first test cycle in which the operation of the second pump is inhibited and fresh water is admitted into the container until the first pump, if functional, pumps liquid from the container. The test control module then initiates a second test cycle in which operation of the first pump is inhibited and fresh water is again admitted into the container until the second pump, if functional, pumps liquid from the container. A separate indication of a satisfactory of unsatisfactory test is given for each sump pump.

Cavitation detection systems and methods include generating a signal representing the power factor of a motor driving a pump, analyzing the power factor signal and determining the presence of cavitation based on the analysis of the power factor signal. The power factor may be estimated using various estimation schemes. Analyzing the signal includes filtering the power factor signal.

The invention discloses a device for measuring stirring loss caused by a high-speed rotating element of an axial plunger pump/motor. The device mainly comprises a main shaft, a cylinder, a torque rotation speed sensor, screws, plungers, a swash plate, a variable rod, a variable piston, a compression spring, a front end cap, a rear end cap, a casing and the like. According to the device for measuring the stirring loss, almost all factors influencing the stirring loss in the pump/motor are taken into consideration, interference of other power loss sources in the pump/motor to measurement of the stirring loss is eliminated through application of proper enlargement of a fit clearance, fastening of a mounting structure and grease lubrication of a bearing, dynamic balance of the rotating element is realized through the designed screw structure, and the stirring loss is measured according to a torque difference measured when a casing is full of oil or devoid of oil under the same work condition. The device is simple and reliable in overall structure, parts are convenient to replace, and the machining and detection costs are low.

A jet generator is controlled by providing an input signal at a variable frequency to the jet generator and to a simulated electrical load of the jet generator, measuring a difference in signals between the jet generator and the simulated electrical load to identify an optimum flow of a jet generated by the jet generator, and tuning the frequency of the input signal to maintain the jet at the optimum flow.

The invention discloses a fault diagnosis method of a compressor shafting based on a three-dimensional space axle center orbit, comprising the following steps: (1) detecting radial vibration signals x(t) and y(t) of a compressor rotor; (2) detecting an axial vibration signal z(t) of the compressor rotor; (3) carrying out low-pass filtering on the vibration signals to eliminate a high-frequency interference signal; (4) acquiring the three-dimensional axle center orbit w(t); (5) forming the three-dimensional axle center orbit; (6) respectively filtering the vibration signals x(t), y(t) and z(t) in three directions and then reconfiguring the vibration signals in a time domain to obtain the three-dimensional filter axle center orbit; and (7) synthesizing the vibration signals using a spectrum analysis principle to obtain the synthesized axle center orbit. The invention provides a three-dimensional vibration analysis method on the basis of a holo-spectrum technology, and the method comprises synthesized three-dimensional vibration analysis and filter three-dimensional vibration analysis, which can more clearly and vividly reflect running status and fault characteristics of equipment. Rotor vibration comprises horizontal, vertical and axial vibration, and the vibration signals in the three directions are synthesized to form the three-dimensional axle center orbit which comprises the three-dimensional filter axle center orbit and the three-dimensional synthesized axle center orbit. The method can really reflect motion situation of the axle center of the rotor and provide more complete information for the fault diagnosis.