98 results about "Fluid regulation" patented technology

The invention relates to an intelligent reflux valve adjusting method based on a self-adaptive control algorithm, and aims to improve the accuracy and response efficiency of fluid adjustment. The method comprises the steps that fluid flow, pressure, temperature and flow direction data collected by sensors installed at an inlet and an outlet of the reflux valve are obtained, and the initial target valve opening degree under the current fluid working condition is calculated through a working condition opening degree prediction model in combination with structural parameters of the reflux valve; based on the relation among the flow, the pressure and the valve opening, the initial target valve opening is adjusted through a fuzzy rule base, so that the final target valve opening is obtained, and therefore the dynamic change of the complex fluid working condition is adapted; according to the final target valve opening degree, an execution mechanism is controlled to adjust the operation state of the reflux valve, and precise adjustment is achieved; working condition prediction and fuzzy control are combined, the adjusting precision and stability of the reflux valve are improved, and the method is particularly suitable for fluid conveying systems with large flow and pressure fluctuation and has wide application prospects in the industries of energy, chemical engineering, environmental protection and the like.

A fluid regulator includes a poppet valve within a flow path that selectively allows a flow of fluid to move from an inlet to an outlet. A threaded regulating interface adjusts a spring tension exerted toward the poppet valve and defines a regulated flow of the fluid through the flow path. A fluid purge mechanism is positioned within the threaded regulating interface. The fluid purge mechanism operates along a rotational axis of the threaded regulating interface and adjusts a boundary of the flow path and manipulates the poppet valve to a maximum operating position to define a purging flow of the fluid. A programmable logic controller cooperates with the powered actuator and a pressure sensor to define a closed-loop interface that adjusts the regulated flow of the fluid through the flow path.

Provided is a temperature control device capable of controlling, with high accuracy, a temperature of a fluid for temperature control to be supplied to a temperature control target in comparison to a case in which there is not provided control means for controlling temperature adjustment performance of supply means based on a result of detection performed by detection means for detecting a heat load of the temperature control target. The temperature control device includes: supply means for adjusting a fluid for temperature control to a predetermined temperature and then supplying the fluid for temperature control; detection means for detecting a heat load of a temperature control target to be supplied with the fluid for temperature control from the supply means, the detection means being arranged on the temperature control target side; and control means for controlling temperature adjustment performance of the supply means based on a result of detection performed by the detection means.

An assembly includes a fluid conditioning system including a cascade module and an active charge compensator integrated into the fluid conditioning system. The fluid conditioning system is transformable between a first mode and a second mode. In the first mode, the fluid conditioning system includes a first vapor compression loop and a second vapor compression loop. The first vapor compression loop and the second vapor compression loop are thermally coupled at the cascade module and the second vapor compression loop is fluidly separate from the first vapor compression loop. In the second mode, the fluid conditioning system includes a single vapor compression loop. The active charge compensator is operable to control a working fluid charge within the fluid conditioning system based on the mode of operation selected from the plurality of modes.

In certain embodiments, a vial adaptor comprises a housing configured to couple the adaptor with a vial, an access channel, a regulator channel, and a regulator assembly. The access channel is configured to facilitate withdrawal of fluid from the vial when the adaptor is coupled to the vial. The regulator channel is configured to facilitate a flow of a regulating fluid from the regulator assembly to compensate for changes in volume of a medical fluid in the vial. In some embodiments, the regulator assembly includes a flexible member configured to expand and contract in accordance with changes in the volume of the medical fluid in the vial. In some embodiments, the flexible member is substantially free to expand and contract. In some embodiments, the flexible member is not partly or completely located in a rigid enclosure

In certain embodiments, a vial adaptor comprises a housing configured to couple the adaptor with a vial, an access channel, a regulator channel, and a regulator assembly. The access channel is configured to facilitate withdrawal of fluid from the vial when the adaptor is coupled to the vial. The regulator channel is configured to facilitate a flow of a regulating fluid from the regulator assembly to compensate for changes in volume of a medical fluid in the vial. In some embodiments, the regulator assembly includes a flexible member configured to expand and contract in accordance with changes in the volume of the medical fluid in the vial. In some embodiments, the flexible member is substantially free to expand and contract. In some embodiments, the flexible member is not partly or completely located in a rigid enclosure.

1. Name of the designed product: electric ball valve (90 - live). 2. Use of the designed product: used for controlling fluid in pipeline, regulating flow. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: perspective view 1.

The invention belongs to the crossing field of biomedical engineering and a micro-fluidic technology, and particularly relates to a three-dimensional culture bone regeneration organ chip and a manufacturing method, the chip comprises a glass slide substrate, a PDMS chip and a three-dimensional culture support, the PDMS chip is internally provided with a symmetrical flow channel system and three-dimensional cell culture areas distributed on two sides of a central support area; the flow channel system comprises four liquid exchange pores, the three-dimensional cell culture area is divided into a plurality of subareas by stand columns, mesenchymal stem cells and vascular endothelial cell hydrogel are loaded into the subareas respectively, and the subareas are communicated through the pores. Multi-mode fluid regulation and control are achieved through symmetrical flow channel design, the synergistic effect of chemical-mechanical signals in a bone regeneration microenvironment is accurately simulated by combining multi-subregion separation co-culture and a drug sustained release support, the cell migration rate and the osteogenic differentiation efficiency are remarkably improved, and the device is suitable for bone defect repair mechanism research, drug screening and biomechanical analysis.

The utility model provides an adjustable impeller, which relates to the technical field of impellers and comprises a connecting shaft and a working mechanism, the outer side of the connecting shaft is rotatably connected with the working mechanism, and the working mechanism comprises a basic assembly, an adjusting assembly, an auxiliary assembly, a connecting and fixing assembly, a side blade assembly and an upper blade assembly. Height adjustability and structural stability are provided, the impeller comprises a basic assembly, an adjusting assembly, an auxiliary assembly, a connecting and fixing assembly, a side blade assembly and an upper blade assembly, and it is ensured that the impeller can be accurately adjusted to adapt to different hydrodynamic conditions; the multi-stage adjusting rod design of the adjusting assembly allows fine adjustment of the angles and the positions of the blades, the auxiliary assembly enhances the stability and the adjusting flexibility of the impeller, the connecting and fixing assembly fixes all parts of the impeller through a structural frame of the connecting and fixing assembly, the overall stability is ensured, and the side blade assembly and the upper blade assembly act synergistically. Comprehensive fluid adjustment is achieved, and the working effect of the impeller is optimized.

The invention relates to the field of fluid adjustment, in particular to a control valve with small maximum static friction force between a sealing part and a valve element part, the valve element part can rotate around the axis corresponding to the valve element part, the sealing part is provided with a concave part, and the wall parts corresponding to the two sides of the sealing part in the thickness direction abut against the valve element part and a seat body part respectively. The sunken part is located on the side, close to the valve element part, of the sealing part in the thickness direction, and at least part of the part, abutting against the valve element part, of the sealing part is located between the sunken part and the second communication part, so that the stability of the valve element part during rotation is guaranteed, meanwhile, the contact area between the sealing part and the valve element part is reduced, and under the same friction coefficient and pressure, the sealing performance is improved. And the maximum static friction force between the sealing part and the valve core part is reduced.

A fluid conditioning system includes a compressor, a first heat exchanger, a second heat exchanger, and a first expansion device, and a second expansion device fluidly connected to form a closed loop through which a working fluid circulates. The first expansion device is associated with operation of the fluid conditioning system in a first mode and the second expansion device is associated with operation of the fluid conditioning system in a second mode. The second expansion device is a thermostatic expansion device. An accumulator is fluidly connected to the closed loop upstream from the compressor relative to a flow of the working fluid. A back pressure regulator is fluidly coupled to the first heat exchanger, the second heat exchanger, and the second expansion device.

TITLE OF THE INVENTION: PORTABLE AND AUTONOMOUS DEVICE AND METHOD FOR MUSCLE TREATMENT BY CRYOTHERAPY The portable and autonomous device (10) for muscle treatment by cryotherapy comprises: a pressurized fluid container (11), a pressurized fluid regulator (12) in fluidic connection with the container and equipped with an outlet (20) for expanded gas, a plate (13) of thermally conductive material configured to rest on the user's skin and equipped with a heat exchanger (14) positioned in the path of the expanded gas exiting the fluid regulator. Figure for the abstract: Figure 1

A medication administration system for safely administrating medication to a patient. The system includes an arrangement of lines, flow regulating device, and securement valve with the securement valve being mounted in parallel in regards to the flow regulating device. The system generally comprises a one-way pressure valve adapted to be in fluid communication with an infusion bag and with an input and output of a fluid regulating device and a timer valve adapted to be in fluid communication with an infusion bag and a blood vessel of a patient, wherein the one-way pressure valve and the timer valve each forms a by-pass circuit of the fluid regulating device. Additionally, the system includes a permanently mounted auto-refill syringe configured to perform multiple rinsing cycles by generating negative pressure to draw fluid and inject it into the primary circuit through a check valve, ensuring efficient fluid administration and reducing contamination risks.

The present invention relates to an intelligent regulation method for a reverse flow valve based on an adaptive control algorithm, aiming to improve the accuracy and response efficiency of fluid regulation; the method obtains fluid flow, pressure, temperature and flow direction data collected by sensors installed at the inlet and outlet of the reverse flow valve, and combines the structural parameters of the reverse flow valve to calculate the initial target valve opening under the current fluid working condition using a working condition opening prediction model; based on the relationship between flow, pressure and valve opening, the initial target valve opening is adjusted using a fuzzy rule library to obtain the final target valve opening, thereby adapting to the dynamic changes of complex fluid working conditions; according to the final target valve opening, the actuator is controlled to adjust the operating state of the reverse flow valve to achieve precise regulation; the present invention combines working condition prediction with fuzzy control to improve the regulation accuracy and stability of the reverse flow valve, and is particularly suitable for fluid conveying systems with large flow and pressure fluctuations, and has broad application prospects in the energy, chemical, environmental protection and other industries.

The invention relates to the field of fluid adjustment, in particular to a control valve which comprises a valve body part, a first valve element assembly and a second valve element assembly, the valve body part comprises a valve cavity, the first valve element assembly and the second valve element assembly are located in the valve cavity, the valve body part comprises a valve seat, the valve seat is provided with at least one first valve hole part and at least one second valve hole part, the first valve hole part comprises a first valve hole, and the second valve hole part comprises a second valve hole. The second valve hole part comprises a second valve hole, and the axis of the first valve hole is parallel to the axis of the second valve hole; the first valve element assembly comprises at least one first valve element, the second valve element assembly comprises a second valve element, the first valve element is matched with the first valve hole, and the second valve element is matched with the second valve hole; the first valve element assembly and the second valve element assembly can move relatively in the axial direction of the control valve, when the control valve works, the first valve element and the second valve element can be mutually limited in the radial direction, eccentric movement of the valve elements due to impact of high-pressure fluid is reduced, then impact of the valve elements on a valve port can be reduced, and abrasion of the valve port is reduced.

In a controller for a fluid regulation unit, a fluid regulation system including a plurality of fluid regulation units, and a method of regulating fluid, each fluid regulation unit includes a unit controller configured to operate the fluid regulation unit. One of the plurality of unit controllers may be used as a master control module and provide at least one operational setpoint to each of the unit controllers. The controller may include instructions stored therein that cause the controller to operate (i) as a unit controller that controls the fluid regulation unit, and (ii) as a master controller. The method may include selecting a new unit controller from among unit controllers of a plurality of fluid regulation units to serve as a master control module when a previous unit controller serving as the master control module of the fluid regulation system is offline.

Various embodiments of apparatuses, methods, systems, and computer program products described herein are directed to a treatment system. An example apparatus includes a treatment apparatus having a first fluid source, one or more channels for delivering a first fluid of the first fluid source, and a treatment unit, the treatment unit having one or more fluid regulators, including a first fluid regulator configured to regulate a flow of the first fluid received by the treatment unit, a movable treatment head unit having one or more spraying tips, a first channel fluidly coupling the one or more spraying tips with the first fluid regulator, wherein the first fluid regulator controls a volume of fluid emitted from the one or more spraying tips, an one or more controllers disposed in the treatment unit configured to control the one or more fluid regulators.

The application relates to the technical field of fluid regulation, and discloses a flow adaptive compensation control method for a fluid conveying object, which comprises the following steps: obtaining a rated flow given value of a flow regulation loop, superimposing a carrier excitation signal of a preset frequency, outputting a combined excitation signal to a flow regulation execution unit, exciting a perturbation fluctuation signal carrying dynamic physical characteristics in a fluid pipeline, collecting a feedback flow signal in real time and extracting a same-frequency response component, calculating a response transmission ratio representing a physically effective bandwidth of the controlled pipeline, reconstructing a regulation gain of a flow adaptive control law according to the numerical fluctuation of the response transmission ratio, correcting the rated flow given value by using the regulation gain, and outputting a flow compensation instruction to the flow regulation execution unit. The application establishes a coupling mechanism of the control law and the pipeline physical constraint, effectively solves the regulation deviation caused by the viscosity drift of the fluid, and eliminates the pump body surge or dynamic pressure shock fluctuation induced by the regulation overshoot.

1. The name of the design product: Manual diaphragm valve (KOSCN DV301). 2. The use of the design product: The design product is used for fluid regulation and control of water, gas and chemical systems. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

An apparatus to maintain an environment over an anterior surface of a patient eye can include an enclosure sized and shaped to be seated about the patient eye to form a cavity within the enclosure. The enclosure can be configured to contain a fluid other than ambient air in contact with the patient eye. The apparatus can include a fluid regulator in communication with the enclosure, where the fluid regulator can be configured to regulate the composition of the fluid contained within the enclosure.

The invention relates to the field of flow regulation and control, and discloses an intelligent fluid flow regulation and control method and system based on environmental perception, and the method comprises the following steps: measuring the real-time flow characteristics of a fluid in a flow channel through a Doppler ultrasonic flowmeter, and constructing a fluid flow prediction model; and the fluid flow change condition in the target flow channel is predicted through the fluid flow prediction model, a fluid flow regulation and control scheme is generated based on the fluid flow change condition in the target flow channel, and finally scheme regulation and control are achieved. The performance of the fluid regulation and control system can be improved, resources are reasonably utilized, the environment is protected, energy is saved, consumption is reduced, and safe operation of the system can be guaranteed.

1. The name of this design product: Suction pump (powerful cleaning ports on both sides). 2. Purpose of this design product: used for fluid regulation. 3. The key design point of this design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the key points of the design: Design 1 3D drawing. 5. Designate Design 1 as the base design.

The utility model discloses a double-disc type fluid regulation and control butterfly valve which comprises a valve body, a main medium flow channel and a large butterfly plate are arranged in the valve body, an auxiliary medium flow channel capable of being sealed by a small butterfly plate is arranged in the large butterfly plate, and the double-disc type fluid regulation and control butterfly valve further comprises an angle control assembly used for controlling the angle of the large butterfly plate and the angle of the small butterfly plate. According to the double-butterfly-plate butterfly valve, independent and accurate control over the large butterfly plate and the small butterfly plate is achieved, the problem that in an existing double-butterfly-plate butterfly valve, two butterfly plates need to be adjusted at the same time is solved, when the flow of a main medium flow channel needs to be adjusted, the large butterfly plate is driven by the air cylinder to be adjusted synchronously, and when the small flow needs to be finely controlled, the large butterfly plate is driven by the air cylinder to be adjusted synchronously. The angle of the small butterfly plate can be independently adjusted, the large butterfly plate does not need to be synchronously adjusted, and the operation process is greatly simplified; through the meshing locking design of the meshing handle and the half gear ring, the synchronism of the large butterfly plate and the small butterfly plate during overall adjustment is ensured, and meanwhile convenience is provided when the small butterfly plate needs to be independently adjusted.

A method is provided. The method includes detaching an upper shell of a reticle pod from a base. The method further includes while the upper shell is detached from the base, blocking an inlet flow of gas from entering an interior of the reticle pod between the upper shell and the base with a use of a fluid regulating module which is in a sealed state. In the sealed state of the fluid regulating module, an opening of the fluid regulating module is covered with a sealing film. The method also includes removing a reticle positioned on the base to a process tool. In addition, the method includes performing a lithography operation in the process tool with the use of the reticle.

The invention relates to a cleaning device (100) for a vehicle (1000), the cleaning device having: - at least one cleaning nozzle (320), which is configured for loading a surface (AR) to be cleaned of at least one sensor (300) with a cleaning fluid (RF, DL, F), - a fluid regulating device (270), in particular a fluid valve (272) or a pump (276), which is configured for selectively providing the cleaning fluid (RF) to the cleaning nozzle (320), - a regulating actuator (140) for generating a cleaning movement (BR) of the cleaning nozzle (320). According to the invention, it is provided in the cleaning device (100) that: - the cleaning device (100) has a switching device (160) for controlling the regulating actuator (140), - it is possible to generate the cleaning movement (BR) independently of the fluid regulating device (270).

According to the micrometering valve, when the valve is closed, the liquid inlet channel and the liquid outlet channel are separated, fluid cannot enter the adjusting cavity through the liquid inlet channel, and the mounting part and the conical part are driven to move by rotating the valve rod. When the conical part gradually extends into the liquid inlet channel, the sectional area of the channel is changed, so that the flow of the fluid is adjusted, and the adjusted fluid flows through the adjusting cavity and finally flows out through the liquid outlet channel. One end of the conical part is arranged on the mounting part, and the other end of the conical part is gradually reduced in the direction far away from the mounting part and close to the axis of the valve, so that accurate flow control can be realized, and the valve is particularly suitable for the field of fluid control with high-pressure and high-precision requirements. The fluid flow can be finely adjusted by rotating the valve rod, the fluid adjusting efficiency is improved, and the adjusting time is shortened.

An emergency shut-off mechanism (204) for operatively connecting an emergency shut-off control element (216) of a fluid regulator (100) with a controller (208) for the emergency shut-off control element, the emergency shut-off mechanism comprising: a latch pin (256) adapted to be operatively connected to the emergency shut-off control element; a latch (260); and a lever (264) operably connected to the latch, the lever being adapted to be selectively engaged by the controller, where in response to the controller engaging the lever, the latch is movable from a first position in which the latch securely retains the latch pin to a second position in which the latch securely retains the latch pin, and in which the latch securely retains the latch pin. The emergency shut-off control element is movable between a second position in which the latch pin is released from the latch such that the emergency shut-off control element is held in a fully open position and a second position in which the latch pin is released from the latch, thereby allowing the emergency shut-off control element to move from the fully open position to a closed position.

The application discloses a compressed air storage structure and a pressure balance method, and belongs to the technical field of compressed air energy storage. The application comprises a primary support layer arranged on the surface of surrounding rock; a plurality of inverted-arch prefabricated lining units made of an engineering cement-based composite material, the cross section of the inverted-arch prefabricated lining units being in an arc shape protruding towards the inside of the chamber; a closed internal pressure balance cavity is formed between the outer wall of each inverted-arch prefabricated lining unit and the inner wall of the primary support layer; a monitoring unit of the pressure balance system is used for monitoring the air pressure inside the chamber and / or the pressure in the internal pressure balance cavity; a fluid regulating unit is in communication with the internal pressure balance cavity and is used for injecting or discharging fluid medium into the internal pressure balance cavity; a control unit is in signal connection with the monitoring unit and the fluid regulating unit, and is used for controlling the fluid injected or discharged by the fluid regulating unit according to the monitored pressure data, so as to adjust the pressure in the internal pressure balance cavity. The application effectively avoids the problem of concrete lining cracking and failure, and realizes the balance of the internal and external pressures of the chamber.