Abstract: Provided is a thrust bearing for a wind turbine including a thrust collar rotatable around a longitudinal axis of the thrust bearing and having a thrust surface transversally oriented with respect to longitudinal axis, a support structure fixed with respect to the longitudinal axis of the thrust bearing, a bearing pad contacting the thrust surface of the thrust collar and movable on a pad seat provided on the support structure, a spring element interposed between the bearing pad and the support structure.

Abstract: A wind turbine, including a support structure and a thrust bearing having a bearing pad which includes a piston and which is movably connected to the support structure, a spring element which is configured to resiliently support the bearing pad relative to the support structure, wherein a pad portion of the bearing pad and/or the bearing pad itself is configured to tilt and to move translationally relative to the support structure, and wherein a gap is provided between the piston and the support structure. The piston limits the movement of the bearing pad. Thus, reliable and well defined movement limits are provided. Furthermore, a broad spectrum of spring parameters is available since the movement may be restricted by the piston and not necessarily be the spring element.

Abstract: Disclosed are a thermoacoustic engine with high conversion efficiency from heat energy to acoustic energy and a designing method for the thermoacoustic engine. A stack of the thermoacoustic engine has a plurality of flow passages extending through a thermoacoustic piping section. A hot heat exchanger is coupled to one end in a longitudinal direction of the stack. A cold heat exchanger is coupled to the other end in the longitudinal direction of the stack. And a length in the longitudinal direction of the hot heat exchanger is greater than a length in the longitudinal direction of the stack, and is greater than a length in the longitudinal direction of the cold heat exchanger.

Abstract: An object is to provide a variable displacement compressor in which a structure is simple and it is easy to lay out valves. On a downstream side of a first control valve that controls an opening degree of a pressure supply passage, a second control valve is provided, which includes a spool having a first valve portion and a second valve portion. When a pressure Pm of the pressure supply passage is higher than a pressure Pc of the crank chamber, the first valve portion opens the pressure supply passage, and the second valve portion closes the first pressure release passage. When the pressure Pm is lower than the pressure Pc, the first valve portion closes the pressure supply passage, and the second valve portion sets an opening degree of the first pressure release passage to a maximum opening degree.

Abstract: Start-stop engine systems for a turbocharged engine have a bypass with fluid flow from upstream of the compressor or downstream of the compressor to a position between the throttle and the engine, or from between the compressor and throttle to a position upstream of the compressor with a Venturi device in the bypass. A device requiring vacuum is in fluid communication with a suction port of the Venturi device. An electronic vacuum pump is added that is in fluid communication with the device requiring vacuum or with the Venturi device. The electronic vacuum pump is operated during a stop condition of the start-stop engine to replace the vacuum generated by the Venturi device or to provide a pressure drop across the Venturi device so the Venturi device continues to generate vacuum for the device requiring vacuum.

Abstract: A gas transportation device is provided and includes a first flow guiding unit and a second flow guiding unit, each of which includes an inlet and an outlet. While the first flow guiding unit and the second flow guiding unit are actuated, gas is inhaled through the respective inlets and discharged out through the respective outlets. A gas-collection chamber is disposed between the first flow guiding unit and the second flow guiding unit and includes a discharging opening. The gas is inhaled through the inlets of the first flow guiding unit and the second flow guiding unit, and transported to the gas-collection chamber through the outlets thereof. The gas in the gas-collection chamber is discharged out through the outlets of the first flow guiding unit and the second flow guiding unit, to achieve an adjustment of gas transportation amount.

Abstract: For a refrigerant compressor, a flexible connection element is provided which connects an end segment of a suction connection piece, which end segment protrudes into the interior of a housing, to a suction sound damper, in particular to a suction opening of the suction sound damper. The end segment itself thereby serves as a means for fastening the flexible connection element onto the end segment and/or the inner wall of the housing.

Abstract: A channel-less microfluidic pump includes a cartridge including a substrate and an actuatable film layer disposed on the substrate, and a manifold having at least three actuatable void volumes separated by a plurality of wall sections and an actuatable flexible layer disposed on the manifold interfacing the actuatable film layer. In operation, the pump can be in an unactuated state wherein the actuatable film layer is disposed against the surface of the substrate or an actuated state wherein at least a portion of the flexible layer and a corresponding portion of the actuatable film layer are deflected into a corresponding void volume thus forming a fluidic volume between the deflected portion of the actuatable film layer and the surface of the substrate. In the actuated state, there is a fluidic gap between immediately adjacent void volumes formed by a thinned region of the flexible layer at a point of contact with a top surface of a wall section.

Abstract: A gas transportation device is provided and includes a plurality of flow guiding units. Each of the flow guiding units includes an inlet plate, a substrate, a resonance plate, an actuating plate, a piezoelectric component, an outlet plate and a valve, which are sequentially stacked. A convergence chamber is formed between the resonance plate and the inlet plate. The actuating plate has a suspension part, an outer frame and a plurality of interspaces. The piezoelectric component is attached on a surface of the suspension part. Gas is inhaled into the convergence chamber via an inlet aperture of the inlet plate, is transported into a first chamber via a central aperture of the resonance plate, is further transported into a second chamber via the interspaces, and is discharged out from an outlet aperture of the outlet plate. The gas is transported by the flow guiding units disposed in a specific arrangement.

Abstract: A system for pumping fluid is provided, having two or more submersible pumps, each submersible pump having an inlet, an outlet, a pumping mechanism that pumps fluid from the inlet to the outlet, a fluid level sensor for measuring a fluid level above the inlet, and a controller. The controller is programmed to activate the pumping mechanism when the fluid level sensor senses a minimum fluid level above the inlet and control the speed of the pumping mechanism based on the fluid level sensed by the fluid level sensor above the minimum fluid level between a minimum operating pump speed and a maximum operating pump speed. The submersible pumps are arranged in a vertical stack with the inlets of the submersible pumps spaced vertically. Each controller of each submersible pump operates autonomously relative to controllers of other submersible pumps in the vertical stack.

Abstract: Provided is an in-vehicle compression device that allows a compressor to be operated at a low current, and operated with low noise and low vibration according to a state of a vehicle. The in-vehicle compression device includes: a compressor including a cylinder and a piston that is slidably provided inside the cylinder and defines a compression chamber; a linear motor including a movable element reciprocatably connected to the piston; and a controller configured to control driving of the linear motor. The in-vehicle compression device is configured to supply a working fluid compressed in the compression chamber to a pressure device provided in a vehicle. The controller is configured to variably adjust a stroke of the piston according to a state of the vehicle.

Abstract: A diaphragm pump comprises a carrier part (1), a drive motor (2) which is arranged thereon and which has a drive shaft (3) which rotates about a main axis of rotation (HR), a pump head (4, 4?) with a pump chamber (8, 8?) which is delimited by a diaphragm (7, 7?) driven in oscillation, and an inlet port (11) and outlet port (10), which are arranged on the carrier part (1) and which are each able to be alternately connected via a shuttle valve arrangement (12, 12?) to the pump chamber (8, 8?) in the sense of an intake stroke and exhaust stroke, wherein the pump head (4, 4?) is mounted rotatably in the carrier part (1) and is connected to the drive shaft (3) in an orientation such that the direction of oscillation (SR) of the diaphragm (7, 7?) is directed orthogonally with respect to the main axis of rotation (HR) of the drive shaft (3), there is provided for the diaphragm (7, 7?) a drive transmission element (13, 13?), which firstly is mounted on the pump head (4, 4?) so as to be displaceable in the directi

Abstract: A rotary pump is presented for use in a medicament delivery device, where the pump has a back plate having an inner surface and a rotor housing is positioned adjacent to the back plate having a peripheral wall. A front plate support is connected to the back plate and a flexible front plate is positioned between the front plate support and the rotor housing. The pump is rotated using a planetary gear transmission, where an eccentric shaft is operatively connected to the planetary gear mechanism. A rotor is rotationally fixed to the eccentric shaft and movably positioned within rotor housing. The rotor has three lobes, where each lobe has two peripheral curved surfaces sharing a common apex, where a first portion of each peripheral surface adjacent to the apex defines a non-smooth curve.

Abstract: A screw pump with a housing; a housing cover; at least one idler screw held in a bore in the housing; and a bushing arranged on the housing cover with a receiving space bounded by a cylindrical flange, into which one end of the idler screw engages; wherein the bushing has an opening in its base, through which a fluid, supplied by a feed channel in the cover, can be supplied from the end opposite the idler screw under pressure to the end surface of the idler screw, wherein the bushing engages with radial play in a receptacle in the cover and comprises a radial flange, by which it is supported axially on the housing; and wherein at a least certain part of the ring-shaped flange of the bushing engages in the bore and is accommodated therein with play.

Abstract: An oscillating piston compressor includes two oscillating compression units, and an introduction section configured to introduce an intermediate-pressure refrigerant into a compression chamber of each of the compression units. Each compression unit has a cylinder forming a cylinder chamber, a piston housed in the cylinder chamber, and a blade integrally formed with the piston. The piston rotates in the cylinder chamber while the blade oscillates. The two compression units are configured such that phases of the pistons are opposite to each other. The piston has a non-circular outer peripheral surface, and the cylinder chamber has an inner peripheral surface with a shape determined based on an envelope of the outer peripheral surface of the piston in rotation.

Abstract: The present disclosure is directed to a housing for an air compressor system. A vent region is associated with the housing to permit cooling air flow to enter and attenuate noise output from the housing. A batt carrier is positioned proximate the vent region. A plurality of airfoil shaped batts are positioned within the batt carrier to reduce airflow turbulence and provide sound suppression capability.

Abstract: Design solutions to mitigate the following four fatal flaws in the conventional pump system design; namely, (1) surprise pump-failure in single pump designs that can result in costly water damage; (2) the threat of fatal high voltage electrocution due to flooding; (3) grid power outage and no energy supply to support the needed pumping power that results in water damage; (4) foil odor from the standing water in the well after a period of low seeping rate with or without activated pumping. The principles described herein can completely mitigate the above four fatal design issues.

Abstract: A centrifugal pump assembly with an electric motor arranged in a stator housing, in which a box, containing an electrical board, is arranged at one end of the stator housing, includes an intermediate element between the motor and the box, being complementary, on one side, to the stator housing and, on the other side, to the box. The intermediate element is a covering and/or connecting element.

Abstract: A centrifugal pump assembly, with an electric motor, arranged in a stator housing, wherein a box, containing an electrical board and closed at the free end by a lid, is arranged at an axial end of the stator housing. The pump assembly includes a wet region, further having a plug which has, at one end, a contour adapted to enter a hole connected to the wet region, acting as a flow control element, and, at the other end, a head adapted to be easily accessible to the user. The plug has such a length that the outer surface of the head is at a level that is proximate to the level of the lid of the box in a closed configuration.

Abstract: A compressor includes a thrust force adjusting part which is configured to adjusts a thrust force between a back surface of a disc part in an impeller and a casing. The thrust force adjusting part includes an outer sealing part which seals a gap between the back surface and the casing, an inner sealing part which seals the gap at a position away inward in a radial direction, and a throttle formation part which has a throttle part in which the gap in an axial direction is formed to be narrowed inward in the radial direction. An outer space sandwiched by the outer sealing part and the inner sealing part and an inner space sandwiched by the inner sealing part and the throttle part are formed the gap The width of the throttle part is narrower than the width of the inner space.

Abstract: A serial axial flow fan includes a first axial flow fan, a second axial flow fan, and a current plate. Hollow cells of the current plate are partitioned by a lattice-shaped partition, penetrate in an axial direction, and are uniformly two-dimensionally arranged at an outer edge. An axially lower end portion of a first housing of the first axial flow fan and an axially upper end portion of a second housing are directly coupled to each other, and the current plate is provided in a coupling unit of the first housing and the second housing. An axially lower end portion of the first tubular unit of the first housing is axially opposed to an axially upper end portion of the second tubular unit of the second housing with the current plate interposed therebetween. A recess recessed on an opposite side to the coupling unit in the axial direction is provided on an axially end surface of at least one of an axially lower end surface of the first tubular unit and an axially upper end surface of the second tubular unit.

Abstract: In accordance with the present disclosure a modular air treatment system is disclosed. The modular air treatment system includes a fan apparatus having a base to removably couple to at least one of an air filter and/or a humidifier, wherein the fan apparatus includes a fan body with at least one convex surface and a nozzle to output air along the at least one convex surface.

Abstract: A fan is provided. The fan includes a frame, a rotor and a stator. The rotor is received in the frame and includes a magnetic part, a metal housing, a hub and a plurality of blades. The metal housing is telescoped on the magnetic part. The hub is telescoped on the metal housing. The blades are formed on the hub. The stator is received in the frame. The stator includes a plurality of silicon-steel sheets which form a silicon-steel sheet outside diameter, the silicon-steel sheet outside diameter is greater than 42 mm and wherein the rated speed of the fan is greater than 8000 RPM.

Abstract: A compressor system including: a first compressor having a compressor suction side and a compressor delivery side; an anti-surge line having an inlet and an outlet; an anti-surge valve arranged along the anti-surge line and controlled for recirculating a gas flow from the compressor delivery side back to the compressor suction side; a gas temperature manipulation arrangement, functionally connected to the inlet of the anti-surge line, configured to reduce or prevent liquid phase in the anti-surge line when the anti-surge valve is open.

Abstract: A fan frame includes a housing, a shaft tube, a circuit board and a plurality of light-emitting elements. The housing includes a base and a plurality of connection members located between the base and a peripheral wall of the housing. The shaft tube is mounted on the base. The circuit board is mounted in the housing and includes a body having a through-hole. The circuit board is fit around the shaft tube via the through-hole and is integrally formed with a plurality of protruding ribs and at least one outer rib. Each protruding rib is aligned with a respective connection member. Each outer rib is located between two adjacent protruding ribs. The light-emitting elements are mounted on the protruding ribs and the outer rib. A fan including the fan frame is also disclosed.

Abstract: A hybrid composite-metallic containment system may comprise a first composite layer, a first metallic layer, a second composite layer and a resin. The hybrid composite-metallic containment system may further comprise a second metallic layer. The first composite layer may be proximate the first metallic layer and the second composite layer may be proximate the second metallic layer. The first metallic layer may comprise a perforation.

Abstract: According to one embodiment, a mounting structure includes a first member, a second member and a support. The first member includes a first outer surface extending along and around a first axis. The second member has a first surface to which a first hole opens, the first hole extending along the first axis to house the first member. The support is rotatable integrally with the first member around the first axis and has a second surface facing the first surface. One of the first surface and the second surface is provided with first dents. The other of the first surface and the second surface is provided with at least one first bump that fits into at least one of the first dents to limit a relative rotation between the second member and the support around the first axis.

Abstract: In a rotary direct-drive single-stage or multi-stage centrifugal pump (1) for cryogenic liquids, having a pump housing (2) for the pump (1) and an electric drive motor unit (12) in a motor housing (10) serving as a pump drive, wherein a shaft (11) of the drive motor unit (12) is mounted on two roller bearings (20; 21), and wherein at least one roller bearing (20; 21) is an unlubricated roller bearing, the structural design of the centrifugal pump (1) should be kept as simple as possible.

Abstract: A rotating machine having a rotor mounted to rotate in a casing and bearing at least a plurality of impellers is provided. The machine may include at least one seal ring disposed radially between the rotor and the casing and mounted to move radially in a seal support of the casing, and wherein it includes a damping system for the seal ring disposed radially between the seal ring and the seal support. The damping system is configured to damp the seal.

Abstract: According to one embodiment, a mounting structure includes: a first member including a first outer surface provided with first dents arranged around a second axis at an interval of a first angular distance; a second member including a second inner surface provided with second dents arranged around the second axis at an interval of a second angular distance, and a second outer surface provided with third dents arranged around a third axis at an interval of a third angular distance; a third member includes a third inner surface provided with fourth dents arranged around the third axis at an interval of a fourth angular distance; a first limiting member housed in one of the first dents and one of the second dents opposing each other; and a second limiting member housed in one of the third dents and one of the fourth dents opposing each other.

Abstract: A handheld work apparatus has a blower wheel. The blower wheel is held via a nut on the shaft in a manner locked against rotation by frictional force. A thread moment of friction is transmittable between the nut and the shaft via a thread section. A first moment of friction is transmittable between the nut and the blower wheel via a first friction contact surface. The first friction contact surface is configured such that, at a minimum tightening torque of the nut, the first moment of friction is greater than the thread moment of friction. As a result, during the operation of the work apparatus when there is a relative movement between the blower wheel and the shaft, the blower wheel moves the nut along therewith. The nut retensions the blower wheel against the shaft. The second friction contact surface runs conically with respect to the rotational axis.

Abstract: Provided is a compressor operable with suppressing moisture adhesion to an impeller. This compressor includes; a tubular casing forming an annular space; a motor within the casing's annular space with having a gap between the casing and the motor; a rotary shaft extending downstream from the motor, for outputting rotational driving force of the motor; an impeller affixed to the rotary shaft downstream from the motor, and that compresses an operating fluid; and first guide blades in the gap and configured so as to impart a swirl component to operating fluid passing through the gap and moving toward the impeller due to the rotation of the impeller. A first moisture accommodation hole and a first discharge port, which open toward the portion of the annular space located between the impeller and the first guide blades and are for discharging moisture in the operating fluid, are formed in the casing.

Abstract: An induced draft fan, including a volute including a chamber and an air discharge pipe; and a wind wheel disposed in the chamber of the volute. The wind wheel is connected to and operationally driven by a rotation shaft of a motor. The air discharge pipe is disposed on one side of the volute, and includes an inner pipe and an outer pipe surrounding the inner pipe. The inner pipe of the air discharge pipe communicates with the chamber, to form an air discharge passage. An annular groove is disposed between the inner pipe and the outer pipe; and the outer end of the outer pipe is provided with a curved groove, the curved groove extends axially and circumferentially to divide the outer pipe into a fixed part and a flexible part.

Abstract: A flue exhaust fan has a configurable upwardly facing outlet for delivery of a mixture of gas and ambient air from the water heater or a furnace into either a vertical flue or a horizontal flue. Because the horizontal flue necessarily includes a 90° transition between the upwardly facing outlet and the horizontal flue, the horizontal flue has a greater flow resistance than the vertical flue. By installing a straight connector with a flow resistance element, the gas flow resistance encountered by the flue exhaust fan is the same for a vertical flue and a horizontal flue therefore requiring a single flue exhaust fan with a flow rating for installation with a horizontal flue or a vertical flue.

Abstract: A seal for a gas turbine engine including an interlayer between a substrate and an abradable layer, the interlayer containing abrasive particles of which at least some abrasive particles protrude out of an interface that abuts the abradable layer.

Abstract: A cooling-fan-apparatus fan shroud includes: a cover wall that closes a space between a heat exchanger and a circumference of a fan; and a passing permitting frame part that is positioned between the fan and an attachment part to a vehicle at an outer side of the cover wall and that allows free passing of traveling air, wherein a reinforcement rib is provided at an opening of the passing permitting frame part, and at least part of the reinforcement rib is a deflection louver that guides the traveling air to a predetermined direction.

Abstract: A ventilating fan includes a driving device, a rotating blade assembly, and a frame structure. The driving device drives the rotating blade assembly to rotate. The rotating blade assembly includes a hub and at least one blade group arranged on the periphery of the hub. The driving device and the rotating blade assembly are disposed in the frame structure. The frame structure includes a main body and a first mounting plate. The main body is formed by a plurality of side portions, and each side portion has at least one bending part for connecting to the adjacent side portion. At least one of the side portions has a first slot, which is disposed adjacent to the corresponding bend part. The first mounting plate is disposed corresponding to the first slot and located in the main body, and the first mounting plate has at least one fixing portion.

Abstract: A compressor rotor for a gas turbine engine includes a hub disposed about an axis of rotation and an outer surface forming a radially inner gaspath boundary, the outer surface defining a nominal hub diameter. A circumferential array of blades extends radially outwardly from the hub. A first inter-blade passage is defined between a first set of adjacent blades and has a first throat area. A second inter-blade passage is defined between a second set of adjacent blades and has a second throat area that is smaller than the first throat area. At least one scoop is disposed in the second inter-blade passage, the scoop defining a cavity extending radially into the outer surface of the hub relative to the nominal hub diameter.

Abstract: A hydraulic working occupation apparatus includes: a hydraulic forming mechanism; an output element; a ball elbow mechanism connected to the hydraulic forming mechanism; and an occupation piston sleeve (25) connected to the ball elbow mechanism, wherein when a high pressure liquid is input, the high pressure liquid acts on the output element, so that the output element moves towards outside of the liquid, thereby outputting work done by liquid pressure; the ball elbow mechanism generating the location deformation drives the occupation piston sleeve (25) to move, so that the occupation piston sleeve (25) and a liquid therein make up for a liquid space left by the output element after the output element moves outwards, and when the output element moves back into the liquid, the ball elbow mechanism and the occupation piston sleeve (25) return to original locations.

Abstract: An electrohydraulic servo valve (EHSV) includes a housing assembly, a spool valve, an armature, a control mechanism, and a feedback spring. The spool valve is movably disposed within the housing assembly. The armature is rotationally mounted on the housing assembly. The control mechanism is coupled to the armature and is rotatable therewith. The feedback spring is coupled between the control mechanism and the spool valve, and includes a helical coil that is disposed on and engages the control mechanism, and a cantilever portion that extends from the helical portion to a terminus that engages the spool valve.

Abstract: A valve module for mounting to a fluid distribution device, including a main body, which has two mutually opposed interface surfaces, which are designed for connection to a valve module or to a fluid distribution device wherein a distribution device connection for fluid coupling to a distribution device connection of the fluid distribution device or to a distribution device connection of another valve module and a working connection for fluidic coupling to a working connection of the fluid distribution device or a working connection of another valve module, is formed on each of the interface surfaces, wherein the main body is permeated by a fluid channel which extends between the two distribution device connections and the two working connections and to which a valve device is assigned to influence an open fluid channel cross-section.

Abstract: A hydraulic device of the present invention includes: a cylinder body (S) including a cylinder (1) and a rod (2) that moves retractably inside the cylinder (1); and a pump unit (30) that is formed with an oil passage (31) and discharges, at an intermediate position in the oil passage (31), liquid into the cylinder (1) through driving of a motor (M). The cylinder body (S) is connected to the pump unit (30) via an extension (40) having an oil passage (41) that provides communication between the oil passage (31) of the pump unit (30) and an interior of the cylinder (1).

Abstract: An electrohydraulic linear actuator comprises a housing consisting of a tubular profile, which forms a housing shell and in which there is a plurality of cavities, and which is closed at the ends by two housing covers fitted to the ends of the housing shell. A first cavity of the tubular profile forms a cylinder which forms the hydraulic cylinder of a double-acting synchronous cylinder and a second cavity which extends parallel to the first cavity accommodates a hydraulic unit in addition to the hydraulic cylinder, and a hydraulic oil reservoir is formed in said second cavity. Two working chambers of the hydraulic cylinder are separated from each other by a piston unit. The housing has at least one through-hole for a coupling element which forms a mechanical interface with the piston unit. The electric motor of the hydraulic unit is configured as a brushless outrunner motor.

Abstract: A rotary actuator and a method of additively manufacturing the same are provided. The rotary actuator includes a valve housing defining a valve chamber and a shaft channel extending from the valve chamber. A valve body includes a valve shaft extending through the shaft channel and a valve head positioned within the valve chamber and defining a head width that is larger than the channel diameter to inseparably join the valve body and the valve housing. The valve head divides the valve chamber into a first chamber and a second chamber which are in fluid communication with a first port and a second port, respectively. The valve body is rotated by adjusting a fluid pressure within at least one of the first chamber and the second chamber.

Abstract: A magnetic sensor arrangement for determining a position of an actuator may include a magnetic sensor to determine the position of the actuator, where the actuator may be configured to reciprocate along a longitudinal axis of an actuator housing of the actuator, such that at least a portion of the actuator may cross an end plane of the actuator housing when reciprocating along the longitudinal axis, and the magnetic sensor may sense a set of components of a magnetic field generated by a magnet, and determine, based on the sensed set of components of the magnetic field, a position of the actuator along the longitudinal axis of the actuator housing of the actuator, where the magnet may be connected to or forms part of the actuator, and where the magnetic sensor may be connected to the actuator housing, and where a portion of the magnetic sensor may be positioned at least in a first actuator position beyond the end plane of the actuator housing.

Abstract: This hydraulic system is provided with a hydraulic pump, a control valve, and a pilot pressure supply unit. The pilot pressure supply unit has: an electromagnetic proportional valve that has a detent-type emergency manual operation function with which a pilot oil passage can be opened manually and generates pilot pressure for a control valve; a controller that controls the degree of opening of the electromagnetic proportional valve in accordance with the operation of an operation lever; and a pilot pressure switching unit that switches the oil pressure state of the pilot pressure supply unit between an on-loading state and an unloading state. The pilot pressure switching unit performs control to implement the unloading state when the electromagnetic proportional valve is being opened manually and performs control to implement the on-loading state after the electromagnetic proportional valve has been opened manually.

Abstract: According to an embodiment, a variable pressure device includes a channel constituting unit and a switch valve mechanism. The channel constituting unit constitutes a channel including a first regulator and second regulators that are arranged in series to the first regulator and are in parallel to one another. The switch valve mechanism selectively connects the second regulators to the first regulator. Opening areas of the second regulators are different from one another.

Abstract: A filter band assembly for a solenoid-actuated valve includes a filter band adapted to be disposed about a valve body of the solenoid-actuated valve. The filter band has a first end at one end and a second end at another end. The filter band assembly also includes a separate bracket affixed to one of the first end and the second end and adapted to support the one of the first end and the second end on the valve body to allow the first end and the second end to be joined together in a closed position.

Abstract: Various examples are provided related to improvements in generalized flow profile production. In one example, a method includes determining a downstream flow profile including a pressure profile and a velocity profile; fabricating a pressure profile generator including distortion screen(s) disposed on a backing structure; fabricating a velocity profile generator including turning vanes in a flow path through the velocity profile generator that are configured to generate the velocity profile; attaching the pressure profile generator to an input side of the velocity profile generator; and installing the flow conditioning device in the flow field of interest. Flow through the flow conditioning device produces the downstream flow profile in the flow field of interest.

Abstract: A method of and for optimizing pressure waves in fluids and profiling openings of elements of mechanical system to optimize systems, is provided. The method aids in the generation of pressure waves with predetermined waveform in elastic fluids and can be used to increase the energy efficiency in the pipeline technologies for the transportation of flowable media, one-phase and multi-phase, homogeneous, and heterogeneous media; powders, disperse mixtures; and technologies of forced extraction of liquids from capillary porous saturated media.