859results about "Fluid parameter" patented technology

The shutdown of a compressor (10) installed in a refrigerant circuit (2) in air conditioning or refrigeration system is controlled so as to prevent unpowered reverse rotation of the compressor. Prior to terminating electric power to the compressor drive motor (24), the pressure within the system is relieved and substantially equalized across the compressor, thereby eliminating the possibility of unpowered reverse rotation of the compressor at shutdown. Pressure relief and equalization may be achieved by reducing the operating speed of the compressor to a low forward speed for a period of time prior to deenergizing the compressor drive motor. Pressure equalization may also be achieved by driving the compressor in reverse rotation prior to deenergizing the drive motor.

The invention discloses a cooling system, method and device of a wind generating set, and relates to the technical field of wind power generation. The cooling system comprises a cooling loop, the cooling loop comprises a cooling pump station, a cooling medium, a connecting assembly and a plurality of cooling branches connected in parallel, the connecting assembly communicates between the cooling pump station and the cooling branches, the cooling pump station drives the cooling medium to circularly flow in the cooling loop, and each cooling branch comprises N heat exchange assemblies connected in series, n is an integer greater than or equal to 2; wherein the outlet of the cooling pump station is respectively connected with the inlet of each cooling branch, and the inlet of the cooling pump station is respectively connected with the outlet of each cooling branch. In other words, when the cooling system is designed, the heat exchange assemblies are connected in series, so that the number of parts can be reduced, the cost is reduced, and the economical efficiency is improved.

A vehicle having an air compressor, an air storage tank and a sensor is disclosed. The air compressor may supply compressed air to the air storage tank, and the air storage tank may supply the compressed air to an external tool. The sensor may be configured to receive information associated with the external tool and send the information to a vehicle processor. The processor may determine tool specification and expected tool usage characteristics based on the information associated with the external tool. The processor may further calculate a target pressure of compressed air in the air storage tank based on the tool specification and the expected tool usage characteristics. Furthermore, the processor may cause air compressor operation to fill the air storage tank with the compressed air at the target pressure.

A gas compressor is capable of adjusting a temperature of a heat recovery liquid discharged from a waste-heat-recovery heat exchanger to a desired temperature at a low cost without providing a temperature adjusting valve in a passage of the heat recovery liquid. The gas compressor includes a heat exchange liquid temperature sensor for detecting the temperature Tw2 of a heat exchange liquid discharged from a waste-heat-recovery heat exchanger, and a passage that allows at least part of a high-temperature fluid cooled by an air-cooled cooler to flow therethrough into a compressor. A controller has a heat exchange liquid temperature adjusting function to control the rotational speed of a cooling fan such that the temperature Tw2 detected by the heat exchange liquid temperature sensor gets closer to a predetermined target heat exchange liquid temperature Tw2t.

The valve system, to be used as a suction valve and / or as a discharge valve in a reciprocating compressor, comprises a valve body, at least one sensor mounted on the valve body and configured to detect a parameter associated to operation of the valve device, and a wireless communication unit electrically coupled to the at least one sensor and configured to transmit information detected by the at least one sensor; the at least one sensor is associated with a fixing member that is inserted in holes of the valve body and that seals the holes. The innovative valve system may comprise further at least one energy harvesting system, which could be for example thermoelectric or piezoelectric, located preferably in or on or at the valve body.

In a hydraulic drive system used for an electrically driven hydraulic work machine that drives a hydraulic pump by an electric motor and supplies a hydraulic fluid to plural actuators to carry out work, the power consumption of the hydraulic pump is kept from exceeding a value decided in advance. For this purpose, a controller calculates target power to be consumed by the hydraulic pump on the basis of the capacity of the hydraulic pump, the delivery pressure of the hydraulic pump sensed by a pressure sensor, and a target revolution speed of the electric motor, and limits the target revolution speed of the electric motor in such a manner that the target power falls within a range of the maximum allowable power.

A fracturing apparatus includes a motor, a first plunger pump, a power supply platform, a gas turbine engine, a generator, and one or more rectifiers. At least two of the gas turbine engine, the generator, and the one or more rectifiers are arranged on the power supply platform. A first end of the generator is connected to the gas turbine engine. A second end of the generator is connected to the one or more rectifiers. The generator is configured to output a voltage to the one or more rectifiers. The one or more rectifiers are configured to provide power to the motor. The motor is configured to drive the first plunger pump.

Control circuitry outputs a pump command current corresponding to an actuator operation signal to pump equipment including at least one pump whose displacement increases in accordance with increase in the pump command current. The control circuitry: stores calibration data generated based on actual measurement data of the at least one pump, the actual measurement data indicating an actual relationship between the pump command current and the displacement of the at least one pump, the calibration data being data to correct the pump command current such that the displacement of the at least one pump transitions on a performance line that is preset for the actuator operation signal. The control circuitry: determines the pump command current based on the actuator operation signal; and corrects the determined pump command current by using the calibration data, and outputs the corrected pump command current to the pump equipment.

Disclosed herein are embodiments of an apparatus for detecting a fault condition of a pump for pumping a fluid, the apparatus comprising: a sensor for measuring a physical property of the fluid, a housing accommodating the sensor and configured for being mounted with said sensor in operational connection with the liquid, a signal processing unit accommodated within the housing and configured to receive a sensor signal from the sensor and to process at least the received sensor signal to detect an occurrence of the fault condition, a communications interface accommodated within the housing and configured to communicate a fault signal indicative of the detected occurrence of the fault condition to a system external to the housing.

A pump having a motor, an inlet port, a discharge port, a fluid sensor, and a controller is provided. The fluid sensor is configured to detect whether a fluid level has risen above a threshold fluid level. The controller is configured to activate the pump in response to the fluid sensor detecting that the fluid level has risen above the threshold fluid level, initiate a shutoff delay timer in response to the fluid sensor detecting that the fluid level has receded below the threshold fluid level, the shutoff delay timer having a shutoff delay time, increase the shutoff delay time if the fluid sensor detects that the fluid level has risen above the threshold fluid level again before the shutoff delay time elapsed, and maintain the shutoff delay time if the fluid sensor detects that the fluid level stayed below the threshold fluid level until the shutoff delay time elapsed.

The invention provides a compressor intelligent control method and system based on dynamic pressure relief and a storage medium, and the method comprises the steps: firstly, capturing the multi-physical field coupling characteristics of a compressor in a shutdown state in real time by deploying a pressure, temperature, vibration and current four-dimensional sensing network; secondly, based on a preset pressure entropy model, fusing the pressure fluctuation intensity, the temperature anomaly index, the high-frequency vibration factor and the current attenuation coefficient to quantitatively evaluate a pressure entropy value, and triggering a three-stage pressure relief mode based on the pressure entropy value; then, based on the deviation between the cavity pressure and the target pressure, pressure relief parameters are dynamically adjusted, and stable pressure transition is achieved; and finally, collecting full-link data of pressure relief operation, and dynamically optimizing pressure entropy model parameters based on reinforcement learning, so that the system continuously adapts to equipment aging and working condition changes. Through dynamic closed-loop adjustment, pressure relief energy consumption waste and equipment loss are reduced, and the stability of the pressure relief process is improved.

A pump performance data logging system is provided. The pump performance data logging system comprises a pump and a plurality of sensors configured to measure at least two different parameters regarding the operation or condition of the pump. The pump performance data logging system also comprises a data logging apparatus having processing circuitry, memory, a case, and a plurality of sensors ports that are configured to receive the plurality of sensors. The case is configured to encase the plurality of sensor ports, the memory, and the processing circuitry, and the data logging apparatus weighs 50 pounds or less.

A method for controlling one or more frac pumps of a fracturing spread. The method comprises adjusting a total pump rate of one or more target pumps of the frac pumps to achieve a total rate setpoint for the frac pumps. The method comprises activating one or more trim pumps for an additional pump rate to compensate for a total rate dip occurring when the total pump rate of the one or more target pumps is adjusted.

A system for monitoring a piece of hydraulic fracturing equipment such as a positive displacement pump. The system includes a plurality of sensors configured to detect conditions of the hydraulic fracturing pump and a processor that is communicatively coupled to the plurality of sensors and configured to analyze data received from the plurality of sensors. The processor is also configured to predict faults in the hydraulic fracturing pump based on the data analysis. The system also includes a communication interface that is configured for transmitting predicted fault data to one or more devices.

A hydraulic-pump flow-rate calibration system includes: a variable capacitance type hydraulic pump that supplies an operating fluid to a hydraulic actuator; a regulator that changes the dispense flow rate of the hydraulic pump according to a flow rate command signal; a flow rate detection device that detects the flow rate of the operating fluid; a control device that outputs the flow rate command signal to the regulator to control the regulator; and a calibration device that calculates an actual measurement characteristic of the dispense flow rate for the flow rate command signal, and performs, on a preset reference characteristic, calibration based on the actual measurement characteristic. The actual measurement characteristic is calculated as a result of the flow rate of the operating fluid being detected by the flow rate detection device during output of a predetermined flow rate command signal from the control device to the regulator.

The invention relates to a method for operating a construction and / or viscous material pumping system (1) for conveying construction and / or viscous material (BDS), - comprising the construction and / or slurry pumping system (1): - at least one conveying cylinder (2a, 2b), wherein the conveying cylinder (2a, 2b) is designed for receiving and discharging construction and / or thick material (CDF), and - at least one conveying piston (3a, 3b), wherein the conveying piston (3a, 3b) is movably arranged in the conveying cylinder (2a, 2b) for drawing construction material and / or viscous material (BDS) into the conveying cylinder (2a, 2b) and for displacing drawn-in construction material and / or viscous material (BDS) out of the conveying cylinder (2a, 2b), and - the procedure includes the following steps: a) Conveying of construction and / or viscous material (BDS) by moving the conveying piston (3a, 3b) to draw in and displace construction and / or viscous material (BDS), b) Recording a time course (zV) of a pressure quantity (pG) characteristic of a pressure (p) acting on construction and / or viscous material (BDS) in the conveying cylinder (2a, 2b) during a movement stroke (vBH) of the conveying piston (3a, 3b) for displacing construction and / or viscous material (BDS), c) Determining, in particular recording, a time duration (ZDBH) of a, in particular the, movement stroke (ZvBH) of the conveying piston (3a, 3b) for displacing construction and / or thick material (BDS), d) Determining at least one movement parameter (BG) to control a subsequent movement stroke (nBH) of the conveying piston (3a, 3b) for displacing construction material and / or thick material (BDS) by linking the recorded progression (zV) and the determined time duration (ZDBH) together, and e) Controlling the subsequent movement stroke (nBH) according to the specified movement size (BG).

A pressurized gas delivery system includes at least a first gas supply source and a second gas supply source. The first gas supply source is configured to supply a first pressurized gas output, and the second gas supply source is configured to supply a second pressurized gas output. A valve including at least a first position and a second position fluidly connects an outlet of the first gas supply source to a system outlet in the first position and to an inlet of the second gas supply source in the second position.

The present application describes a positive displacement pump for delivering a material to be delivered, comprising a measurement assembly having at least one measurement channel through which at least a portion of the material to be delivered delivered by the pump can flow, the at least one measurement channel having a non-circular cross-section, and the measurement assembly having a pressure sensor assembly, and a pressure sensor for detecting pressure acting at positions spaced apart in the flow direction of the at least one measurement channel when at least a portion of the material to be conveyed conveyed by the pump flows through the at least one measurement channel. A system having a positive displacement pump and a control unit is also described.

An apparatus, system and method for regulating fluid flow are disclosed. An apparatus for infusing fluid into a patient includes a housing, a tube-contact member, a rotating arm, and a tube-retention cover. The housing has an opening on a front side of the housing. The opening is sized to receive a drip chamber having an inlet tube and an outlet tube. The tube-contact member contacts one of the inlet tube and the output tube of the drip chamber when inserted into the opening. The rotating arm is coupled to the tube-contact member and is configured to rotate along an axis. The tube-retention cover is configured to close when the drip chamber is initially loaded into the opening.

An electric pump system and method of operating the same involves pumping a fluid through a fluid passageway defined in a mechanical pump from a pump inlet to a hollow shaft of a motor, through the hollow shaft to an internal motor cavity defined by a housing of the motor, and through another fluid passageway defined in the motor housing and mechanical pump that leads to a pump outlet. The system and method further involve pumping the fluid through another fluid passageway defined in the mechanical pump from yet another pump inlet to the pump outlet. The temperature of fluid exiting the hollow shaft can be assessed and used by an electronic control unit (ECU) of the electric pump system to control the same. The electric pump system can be part of a cooling and lubrication system for an electric vehicle transmission, gearbox, differential or transfer case, for example.

A pump may generally include a frame including a reservoir. The reservoir stores a hydraulic fluid. The pump may also include a motor assembly supported by the frame and a pump assembly operably driven by the motor assembly. The pump assembly is in fluid communication with the reservoir and configured to dispense the hydraulic fluid out of the frame. The pump assembly includes a first piston and a second piston, wherein the first piston dispenses hydraulic fluid out of the frame between a first pressure and a second pressure greater than the first pressure, and the second piston dispenses hydraulic fluid out of the frame between the first pressure and a third pressure, the third pressure being greater than the second pressure.

A fluid compressor system having an electro-magnetic throttle valve (EMTV) that utilizes magnetic forces supplied by an electromagnet to actuate the opening and closing of the valve. The fluid compressor system may include a control system that controls the position of a valve plate of the EMTV, allowing the EMTV to fully or partially actuate to a plurality of intermediate positions depending on a current supplied to the electromagnet by the control system. The control system may control a location of the valve plate with reference to the electromagnet by balancing the forces acting on the valve plate, such as electromagnetic forces supplied by the electromagnet, biasing forces supplied by biasing components, and gravitational forces acting on the valve plate. The EMTV may include a blowdown system configured to release a pressure within the fluid compressor system when the inlet on the EMTV is closed.

A method for controlling a first reference temperature in a device (1) for compressing gas, the device (1) including an oil-injected element (2) for compressing the gas; an oil injection pipe network (6) for injecting oil into the oil-injected element (2), including: an apportioning means (8) for apportioning the oil into a first part and into a second part; an oil cooler (10) cooled by a fan (9), for cooling the first part; and a bypass (11) for diverting the second part past the oil cooler (10). An apportioning proportion of the first part is controlled to a required apportioning proportion, and subsequently a speed of the fan (9) is controlled to a required speed optionally on the basis of the apportioning proportion, wherein the apportioning proportion is controlled by a control unit (15) on the basis of a non-fuzzy logic algorithm.

Methods for determining at least one target position of at least one suction valve lifting gripper and / or at least one bypass valve of a compressor system comprising at least one compressor. Methods for controlling a compressor system comprising at least one compressor. Computer-implemented methods for generating at least one characteristic map, characteristic maps, control systems, compressor systems, computer programs, and methods for compressing a gaseous energy carrier.

A pump includes a power end and a fluid end coupled to the power end. The power end includes a plunger, and the fluid end includes a crossbore in selective fluid communication with inlet and outlet bores. A suction valve controls fluid communication between the inlet bore and the crossbore, and a discharge valve controls fluid communication between the outlet bore and the crossbore. An actuation device is used to move the discharge valve between an open position and a closed position. A position sensor measures a position of the plunger. A pressure sensor measures a pressure of the crossbore, the inlet bore, or the outlet bore. A controller operates the discharge valve based on data from at least one of the position sensor or the pressure sensor.

A centrifuge system includes a centrifuge and a feed line fluidly connected to centrifuge with the centrifuge driven by a hydraulic system. The hydraulic system includes an electric motor driving a hydraulic pump connected to a fluid reservoir with the hydraulic pump providing hydraulic fluid to one or more hydraulic motors which in turn rotate the centrifuge. The system includes a pressure sensor for measuring fluid pressure and a speed sensor for measuring the rotational speed of the centrifuge. A controller can be in communication with the hydraulic system and the sensors and can receive measurements from the sensors and adjust the pressure of hydraulic fluid flowing to the one or more hydraulic motors to maintain a rotational speed of the centrifuge based on differing loads. The system can include one or more valves, controlled by the controller, which can also adjust the hydraulic pressure of the system.

The present disclosure relates to a mobile testing and / or calibration device and a method for testing and / or calibrating a hydraulic and / or electrical component at a location where the hydraulic and / or electrical component is used and / or under operating conditions of the hydraulic and / or electrical component. The mobile testing and / or calibration device comprises at least one first sensor unit for acquiring performance data of a hydraulic and / or electrical component to be tested and / or calibrated. Furthermore, at least one second sensor unit is provided for acquiring at least one testing and / or calibration parameter, wherein the testing and / or calibration parameter includes current parameters of the location and / or the operating conditions.In addition, at least one supply and / or control unit is provided for providing drive means and / or control parameters for the operation of the hydraulic and / or electrical component, and a computing unit for the automated testing and / or calibration of the hydraulic component during the operation of the hydraulic and / or electrical component based on the recorded performance data and the recorded test and / or calibration parameters.

A method for adjusting a flow rate of a fluid line is disclosed that includes one or more acts of: capturing an image of a drip chamber using an image sensor; identifying a plurality of pixels of interest within the image; determining a subset of pixels within the plurality of pixels of interest, wherein each pixel of the plurality of pixels is determined to be within the subset of pixels when there is a path to a baseline corresponding to the drip chamber; performing a rotation operation on the subset of pixels; estimating a volume of the drop within the drip chamber by counting a number of pixels within the rotated subset of pixels; and / or adjusting a flow rate of fluid flowing through a fluid line.

A controller for one or more pumps in a central plant is configured to obtain first values of flow rate of a fluid provided by the one or more pumps to a building or campus and corresponding first values of a pressure differential across the building or campus during a first time period, generate a system curve for the building or campus that defines a relationship between the flow rate and the pressure differential using the first values of flow rate and pressure differential during the first time period, predict a second value of the pressure differential across the building or campus during a second time period using the system curve and a second value of the flow rate during the second time period, and operate the one or more pumps to achieve the second value of the pressure differential across the building or campus during the second time period.