199results about "Flow control with auxillary non-electric power" patented technology

A flow control valve assembly, and a method of determining and controlling fluid flow through the valve, that is relatively simple in design, is relatively inexpensive, is accurate, and has a relatively wide measurement range. The flow control valve is relatively compact and includes all of the flow measurement and control components in a single, relatively compact assembly. Such components may include a differential pressure sensor, pressure sensor, a temperature sensor, a position sensor, and a processor. The differential pressure sensor senses differential pressure across the variable area flow orifice. The pressure sensor senses fluid pressure within the valve and supplies a fluid pressure signal. The temperature sensor senses fluid temperature and supplies a fluid temperature signal. The position sensor senses the position of the variable area flow orifice and supplies a position signal. The processor receives the differential pressure signal, the fluid pressure signal, the fluid temperature signal, and the position signal and uses these signals to determine and control fluid flow parameter in the passageway.

A flow control device may include an inlet for passing fluid into the device, an outlet for passing fluid from the device, a pneumatic pressure controlling portion, a fluid flow control valve actuated by pneumatic pressure supplied via the pneumatic pressure controlling portion, a flow meter configured to measure flow rate of the fluid, and a controller configured to control the pneumatic pressure controlling portion at least according to the flow rate measured by the flow meter. Actuation of the fluid flow control valve may cause adjustment of the flow rate.

The invention discloses an electronic device comprising a housing and an air volume adjusting device; wherein, the housing is defined with a holding space and an air inlet causing the holding space to be communicated with the outside; the air volume adjusting device comprises a plate piece for covering the air inlet and an actuating mechanism, wherein, the actuating mechanism can drive the plate piece to move to open the air inlet along with temperature change of the holding space; the supply air rate of the holding space can be increased by the configuration of the air volume adjusting device so as to effectively improve the heat dissipation efficiency of a heat dissipation fan and lower the possibility of system halt due to poor heat dissipation in the system; in addition, the air volume adjusting device with simple structure can effectively increase heat dissipation efficiency and does not need to adopt complex heat dissipation assemblies with high price and complex structure, so that manufacturing cost can be effectively lowered.

The present invention provides a pilot type water discharging / stopping and flow regulating valve capable of performing both the discharging / stopping of water and the regulation of flow by light operations and, once the flow is regulated, discharging the water at a pre-regulated specified flow in the next water discharge even if the water is stopped. The pilot type water discharging / stopping and flow regulating valve (10) comprises a main valve (20), a back pressure chamber (26), an introducing small hole (28), a pilot water channel (30), and a flow regulating mechanism. The flow of the main water channel is regulated by advancing and retreating the main valve (20) following the advancement and retreat of a pilot valve (34). The valve further comprises a water discharging / stopping switching mechanism switching between the discharging and stopping of water by advancing and retreating the pilot valve (34) between a water discharge position and a water stop position. Furthermore, the flow regulating mechanism is formed to maintain the flow regulating position of the pilot valve (34) at a previously regulated flow regulating position when the pilot valve (34) performs the water discharge operation after performing the water stop operation by the water discharging / stopping switching mechanism.

Solid metal ammine complexes are applied for safe and high-density storage of ammonia to be released for use as reducing agent in selective catalytic reduction of NOx in exhaust gases. The compositional formula of the metal ammine complexes is M(NH3)nXz, where MZ+ represents one or more metal ions capable of binding ammonia, X represents one or more anions, n is the coordination number (from 2 to 12), and z the valency of the metal ion (and thus the total number of compensating anion charges). Ammonia is released by generating a reduced gas-phase pressure of ammonia inside the container, which is below the equilibrium desorption pressure of ammonia at the operating temperature of the storage material thus enabling the unit to be operated is a safe manner with lower operating temperature and pressure.

A pilot-type water discharging / stopping and flow regulating valve device capable of performing both the discharging / stopping of water and the regulation of flow by light operations, and capable of, once the flow is regulated, discharging the water at a pre-regulated specified flow in the next water discharge even if the water is stopped.The pilot type water discharging / stopping and flow regulating valve device has a main valve, a back pressure chamber, an introducing small hole, a pilot channel and a flow regulating mechanism. The flow of the main channel is regulated by advancing and retreating the main valve following the advance / retreat of a pilot valve. The valve device further has a water discharging / stopping switching mechanism that switches between the discharging and stopping of water by advancing and retreating the pilot valve between a water discharge position and a water stop position. Furthermore, the flow regulating mechanism is configured to maintain the flow regulating position of the pilot valve at a previously regulated flow regulating position when the water discharging / stopping switching mechanism causes the pilot valve to perform water discharging operation after causing the pilot valve to perform water stopping operation.

A technique facilitates controlling fluid flows, such as fluid flows in a downhole well zone or zones. A flow control valve is employed to control a fluid flow and is operationally linked with an injection valve. Actuation of the flow control valve is used to automatically actuate the injection valve between corresponding positions allowing or blocking fluid injection. Closing or opening of the flow control valve thus results in a desired corresponding action of the injection valve, such as blocking flow or allowing flow through the injection valve.

A valve selected from the group consisting of a directional valve and a flow control valve has an inlet connection, an outlet connection, a slide that controls a fluid connection between the inlet connection and the outlet connection, the slide being configured so that it controls the fluid connection in at least two adjustable opening cross-sections that are spaced axially apart from each other and allow a partial flow to pass through.

Methods and related systems are described for controlling inflow of fluid into a production string. In aspects, the invention provides an inflow control device with a shut-off feature that is operated automatically utilizing swellable materials.

An apparatus for controlling gas flow conductance in a plasma processing chamber being configured with an upper electrode disposed opposite a lower electrode adapted to support a substrate is provided. The apparatus includes a ground ring configured to include a first set of radial slots formed therein. The apparatus also includes a confinement ring arrangement which includes at least a first set of collapsible confinement rings and a second set of collapsible confinement rings which is configured to movably couple to the first set of collapsible confinement rings. The apparatus further includes a mechanism configured at least to collapse and to expand the first set of collapsible confinement rings and the second set of collapsible confinement rings to control gas flow conductance through the first set of radial slots between (a) an unobstructed gas flow, ON state, and (b) an obstructed gas flow, OFF state.

Embodiments of the invention relate to systems, methods, and apparatuses for a control valve. In one embodiment, a valve can be provided. The valve can include a flow restrictor portion operable to generate a pressure drop in a fluid flow by viscous dissipation; a throttle portion operable to change a flow rate of the fluid; and a guard portion operable to separate the flow restrictor portion from the throttle portion.

A testing method for testing a flow controller with high accuracy by shortening as much as possible the time required for the test including the wait time. A testing-subject flow controller and a testing-standard flow controller are arranged in that order in series from the upstream side in a flow channel through which a fluid whose flow is to be controlled flows. In a flow-uncontrolled state in which the valve of the testing-subject flow controller is practically in the full-open state, and with the fluid flow controlled to a predetermined flow rate by the testing-standard flow controller, whether the actual flow-rate measurement according to the testing-subject flow controller falls within a predetermined range of actual flow-rate measurements according to the testing-standard flow controller is determined.

A flow control system able to realize stabilization of a flow rate of fluid at a high precision even in cases where pressure fluctuation of an outlet fluid of the flow control system occurs, that is, a flow control system arranged in a supply line of fluid running from a fluid supply part to a predetermined fluid usage part, provided with a first pressure control valve part arranged on the fluid supply part side and a second pressure control valve part arranged on the fluid usage part side through the first pressure control valve part and a pressure loss part, the first pressure control valve part provided with a first pressure control mechanism maintaining the outlet fluid at a predetermined pressure by a first valve part arranged within a first valve chamber moving back and forth with respect to a first valve seat in accordance with pressure fluctuation of the inlet fluid, the second pressure control valve part provided with a second pressure control mechanism maintaining the inlet fluid at a predetermined pressure by a second valve part arranged within a second valve chamber moving back and forth with respect to a second valve seat in accordance with pressure fluctuation of the outlet fluid.

Embodiments of a fluid flow regulating device and methods of using the same are described. Certain embodiments manages fluid flow between one or more input ports and output ports at least partly in response to fluid pressure changes and / or by a mechanism driven by fluid flow, optionally without using electrical power.

A flow controller includes a flow detection unit that includes a detection unit for detecting the flow rate of a fluid; and a flow control unit that is coupled to the flow detection unit and that is capable of adjusting the flow rate of the fluid. The detection sensor constituting the detection unit includes a thermal flow sensor using MEMS technology, and the flow rate of the fluid that has been detected by the detection sensor is output to a control unit. In addition, in the flow control unit, the supply state of air to a supply room is switched by each of a supply-use solenoid valve and an exhaust-use solenoid valve, and on the basis of the supply state of the air, a control valve opens and closes.

A valve device includes a receptacle having an upper and a lower ports for coupling to sprayer devices, a front wall having a lower opening, an upper housing attached the front wall for allowing water to flow from the housing into the receptacle, the receptacle includes a vertical partition to separate an interior into a front and a rear chambers which are communicating with the housing and the rear chamber of the receptacle. The vertical partition includes a lower aperture formed by a valve seat. A lateral stem includes a plug slidable to engage with the valve seat of the vertical partition, or to block the lower opening of the front wall, to effectively control the water to flow out through the upper or the lower ports of the receptacle.

The invention discloses a measure control system and a measure control method. The disclosed measure control system comprises a controller, a measure pump, a proportional flow valve and a hydraulic motor. The proportional flow value and the hydraulic motor are connected in a hydraulic oil path of a hydraulic system in series. The controller can control the hydraulic oil flux passing through the proportional flow valve according a preset rotate speed. A hydraulic motor output shaft is connected with the measure pump and can drive the measure pump to rotate. The disclosed measure control system also comprises a rotate speed sensor which is connected with the controller. The rotate speed sensor can outputs a rotate speed signal to the controller according to the rotate speed of the hydraulic motor. The controller can detect the actual rotate speed value of the hydraulic motor according to the rotate speed signal. The controller can judge whether the actual rotate speed value meets the preset requirement and changes the hydraulic oil flux passing through the proportional flow valve according to the judgement result. The measure control system and the measure control method provided by the invention are fit for the measure control towards liquid flux.

A network tap device that is configured for operation in a copper Gigabit Ethernet communications network using a power-over-Ethernet (“POE”) electrical supply is disclosed. In one embodiment, a network tap device powered by a POE supply is disclosed, comprising first and second network ports that are configured with receptacles for receiving communication cables. The communication cables are configured to carry both data signals and the POE supply to and from the network tap device. The network tap device further includes first and second tap ports that connect with additional communication cables to a monitoring device. The network tap device also includes control and regulation circuitry that is configured to receive the POE supply from the communication cables via the network ports and to enable components of the network tap device to be operated by the POE supply.

Embodiments of a fluid flow regulating device and methods of using the same are described. Certain embodiments manages fluid flow between one or more input ports and output ports at least partly in response to fluid pressure changes and / or by a mechanism driven by fluid flow, optionally without using electrical power.

An electromagnetic pressure regulating valve includes a valve body and causes a valve body to move by an electromagnetic proportional solenoid to adjust an opening degree of a valve passage, thereby regulating secondary pressure to target pressure. A pressure return chamber is formed in the housing, and a diaphragm seal is provided at the valve body. The diaphragm seal receives the secondary pressure of the pressure return chamber to cause the valve body to move toward a closed position. A bearing member is provided between the valve body and the housing. In a gap between the valve body and the housing, a high-pressure sealing member is provided closer to the valve passage than the bearing member, and a low-pressure sealing member is provided closer to the bearing member than the high-pressure sealing member. A buffer chamber connected to a secondary port is formed between the sealing members.

A check valve nozzle having at least two discharge ports and providing improved mixing between the discharged fluid and the receiving fluid. The check valve nozzle may be of a “duckbill” type or a “pancake” type. The “duckbill” type may have discharge ports that vary in size, orientation with respect to the longitudinal centerline of the check valve nozzle, and / or construction materials. The “pancake” type may discharge the fluid from the check valve nozzle in a perpendicular, forward, or rearward direction. The check valve nozzle assembly contains a number of check valve nozzles that can vary in size, orientation with respect to the longitudinal centerline of the end cap of the assembly, and / or construction materials.

The invention provides a magneto-rheological fluid (MRF) valve of a spiral liquid passage, which mainly solves the problem of nonlinear flow of the MRF along the liquid passage in the MRF valve, enlarges the flowing path length of the electro-magneto-rheological fluid, improves the utilization ratio of the line of magnetic force, improves the pressure difference of the controllable fluid of the electro-magneto-rheological fluid under the equivalent current intensity and unchangeable magnetic gap, and achieves the objects of saving energy and reducing the dimension of the MRF valve. The proposal of the MRF valve is that the corresponding end surface of a positioning disc to a magnetic guide disc is provided with a nonlinear liquid passage. The MRF valve has the advantages of simple structure of MRF valve, convenient manufacture and installation, increasing no volumes of the MRF valve, and enlarging the control range of the MRF valve.

A device for metering and controlling fluid flow includes a variable orifice and is configured to use a pressure sensor. The device includes a fluid flow conduit having at least one planar inner wall that extends along a portion of the fluid flow conduit length, and an element having a linear edge configured to mate with the at least one planar inner wall of the fluid flow conduit. The element is movable in a direction transverse to an axis of the conduit between an open position wherein fluid flows through the conduit and a closed position wherein the element substantially shuts off fluid flow in the conduit.

An internally adjustable damper for use in a commercial kitchen includes a housing having a sidewall defining an interior, a first open end, and a second open end in fluid communication with the first open end. A damper blade is disposed within the housing and is rotatable about an axis of rotation to allow a selectable air flow resistance. An arch extends from the damper blade and adjacent to the sidewall, the arch being symmetric about the axis of rotation. A threaded stud extends from the sidewall into the interior of the housing and is disposed adjacent the arch. A fastener is operatively coupled to the threaded stud, wherein the fastener is adapted to selectively press down against the arch, thereby fixing the location of the damper blade, and retract from the arch, thereby allowing the damper blade to rotate about the axis of rotation. The fastener and the baffle are accessible from inside the housing through either the first open end or the second open end.

The invention relates to a valve combination (1) for regulating the flow rate or differential pressure in liquid-carrying heating or cooling systems, comprising a housing (2) which is provided with afeed pipe (10), a discharge pipe (11) and a connection pipe (6) arranged therebetween, and a regulating device (3) which is arranged axially in the connection pipe (6), wherein the regulating device (3) keeps the differential pressure constant at a predefined value by means of a first flow regulating device (4), which is likewise arranged axially in the connection pipe (6) and can be adjusted by an actuating part (8) which projects from the housing (2) and acts on a second seat (24), and by means of a second flow regulating device (5) which is arranged axially or coaxially with respect to thefirst flow regulating device and can be preset, wherein the flow cross section (9) can be set, which is characterized in that, when an actuator (29) which acts on the actuating part (8) is installed,the flow cross section (9) can be adjusted by means of a handle (7) which is not concealed by the actuator, and in that, when the actuator (29) is installed, the position of the handle (7) can be readon a display device (19) which is not concealed by the actuator, and the display device (19) depicts the presetting of the flow cross section (9).

It is proposed to design a fluid flux regulating unit (1, 28, 35, 41, 53, 56, 58), comprising a first fluid port (3), a second fluid port (4) and a valve means (6) , in a way that the valve means (6) comprises at least one fluid pressure balancing means (13, 25, 30, 31, 33, 52).

A diffuser apparatus for variably controlling fluid pressure release is provided. The diffuser apparatus includes an aperture for pressure release and an adjustable plug that can variably expose the aperture by adjusting positions in response to internal pressure levels. The diffuser apparatus may also include a safety mechanism that utilizes valves to add or release pressure acting on the plug in order to open and close the aperture.

A flow controller and a test method therefor are provided which enable testing of the flow control of a process gas passing through a fluid path during operation of semiconductor manufacturing apparatuses. While the flow control is being performed to adjust the flow rate through the fluid path to a flow rate set value, a predetermined number of pieces of test sampling information is collected and associated with the flow rate set value for storage. The test sampling information is made up of a detected flow rate value of the process gas, a detected pressure value, and valve drive control information delivered to a flow control valve mechanism. Then, coefficients of association are sequentially determined which indicate the associations of the predetermined number of detected flow rate values and pieces of valve drive control information, which are stored as the test sampling information. When the value of a coefficient of association is out of the range of predetermined threshold values, a difference is determined between the valve drive control information made available based on a newly received detected flow rate value and the reference valve drive control information obtained with reference to a valve property information table pre-registered for testing. This difference is employed as test information.

The present invention relates to a valve having a control function and a method for controlling a valve in a fluid conduit in order to adapt flow rates and / or differential pressure rates. The valve comprises a fluid inlet and a fluid outlet and a valve closing member located inside a valve body. The valve closing member is operationally connected to a variable volume chamber, which is adapted to extract energy from the fluid in order to provide either an opening or a closing displacement of the valve closing member such that the degree of opening of the valve can be changed. The supply of fluid to and from the variable volume chambers may be regulated by electronically controlled valves.

An apparatus for controlling water flow is provided. The apparatus is a novel electronic water controller capable of operation using a battery-type power source, and providing for achievement of long battery life. The apparatus generally comprises an electronic control module, a vacuum pressure sensor, a trigger switch, a vacuum switching module and a means to electrically connect the electronic control module to a power source.