Abstract: A gas turbine engine includes a casing including a plurality of interconnected casing segments defining an outer surface of the casing. One of the casing segments is a gearbox segment enclosing a gearbox and having a gearbox flange extending radially outwardly from the outer surface of the casing. The engine includes a bearing housing enclosing at least one bearing and having an annular body with an inner segment disposed within the casing. The annular body having an extension segment extending radially outwardly from the inner segment to a bearing housing flange disposed radially-outwardly of the outer surface of the casing. The bearing housing flange is engageable with the gearbox flange to removably mount the gearbox segment to the bearing housing.

Abstract: A linear compressor includes: a piston configured to reciprocate in an axial direction, and a cylinder that is provided on a radially outer side of the piston to accommodate the piston and that defines a compression space with the piston. The cylinder includes: a gas hole defined at the cylinder such that a first end of the gas hole is at an outer circumferential surface of the cylinder and a second end of the gas hole is at an inner circumferential surface of the cylinder, and a gas pocket that is in communication with the gas hole and that is recessed from the inner circumferential surface of the cylinder, where a length of the gas pocket in the axial direction of the cylinder is longer than a length of the gas pocket in a circumferential direction of the cylinder.

Abstract: A method for detecting the state of operation of a rotating machine, in particular a centrifugal pump, includes detecting using at least one first temperature sensor a change in temperature in or at least one bearing region of a rotating element of the rotating machine, identifying temperature gradients using an evaluation unit, from a temperature profile generated from the at least one temperature sensor, and identifying a switch-on and/or switch-off process of the rotational movement of the machine on the basis of a characteristic of the ascertained temperature gradient.

Abstract: The present application relates to an integrated inflation and deflation air pump, including a housing, a pump body, an adjusting assembly and a control assembly. The housing is provided with a universal air port, an inflation port, and a deflation port. When in an inflated state, the universal air port is in communication with the air inlet, the inflation port is in communication with the air outlet, and, when in a deflated state, the universal air port is in communication with the air outlet, the deflation port is in communication with the air inlet, the adjusting assembly is provided between the housing and pump body and is configured to control a communication relationship between the air inlet, air outlet, universal air port, inflation port, and deflation port. The control assembly is installed on the housing, electrically connected to the pump body to control operation of the pump body.

Abstract: This invention relates to programmable electronic device that prevents wastewater submersible and non-submersible pumps as well as viscous pumps from ragging therefore avoiding pump blockage. In one aspect the invention provides a pump apparatus comprising a pump and a control device for a pump, the pump being a mechanically switched pump such as a direct online/ star delta pump and capable of being operated in a forward and a reverse direction, the control device comprising: a monitoring mechanism to monitor the torque of the pump, a control mechanism to control the direction of the pump and being capable of selectively directing the pump to (i) stop, (ii) operate in a reverse and (iii) operate in a forward direction; wherein the control mechanism is adapted to control the pump to do at least one of (a) stop and (b) operate in a reverse direction when the monitoring mechanism detects a pre-determined value in the torque of the pump.

Abstract: A method and apparatus to increase the labyrinth screw pump life, achieved by a decrease in axial forces in thrust tribo-couplings by creating a chamber into which high pressure at the exit from the stage is transmitted through the additional holes of the rotor, thereby creating an opposite axial force, which reduces the contact pressure on the friction surface of the thrust bearing.

Abstract: An element for compressing a gas to be compressed at a low temperature of ?40° C. or lower, which element (1) is provided with a housing (2) containing at least one rotor (3) that is rotatably arranged with respect to the housing (2) and having an inlet (6) for the gas to be compressed and an outlet (7) for compressed gas, characterized in that the element (1) is configured for compressing the gas to be compressed having the low temperature by providing the element (1) with a heating duct (8) that runs through the housing (2), the heating duct (8) being provided with an inlet (9) where a first heat medium is introduced into the housing (2) at a higher temperature than the aforementioned low temperature and an outlet (10) where the first heat medium is evacuated from the housing (2).

Abstract: A pump system contains a pair of pumps each of which contains a vibration actuator vibrated by electromagnetic drive and can discharge fluid due to drive of the vibration actuator. The pump system has a vibration suppression mode in which the pair of the pumps are driven so that vibration of the vibration actuators of the pair of pumps is cancelled each other and a vibration generation mode in which the pair of the pumps are driven so that the vibration of the vibration actuators of the pair of pumps is superimposed with each other.

Abstract: An air compression device includes: a compressor device for the compression of air, wherein the compressor device has a compressor axis and the compressor axis is defined by a direction in which air is compressed by the compressor device; an electric motor for driving the compressor device, wherein the electric motor has an electric motor axis formed by an axis of rotation of the electric motor; and a transmission that mechanically connects the electric motor to the compressor device. The transmission arranges the compressor device and the electric motor at an angle to one another, and the compressor axis and the electric motor axis enclose an angle between 10° and 80°, in particular 20° and 70°, more specifically 30° and 60°.

Abstract: A self-priming apparatus for quick no-water startup includes a front-stage inlet chamber, a middle-stage gas-liquid separation chamber, and a rear-stage gas-liquid separation chamber. A plurality of two-stage chamber gas-liquid separation one-way channels are symmetrically arranged between adjacent chambers of the front-stage inlet chamber, the middle-stage gas-liquid separation chamber and the rear-stage gas-liquid separation chamber. A plurality of one-way outlets are symmetrically arranged in an inner cavity of the rear-stage gas-liquid separation chamber. By decreasing or increasing the volumes of an outer cavity and an inner cavity of the front-stage inlet chamber, water is sucked in due to pressure difference and water intake and preliminary gas-liquid separation are carried out. The middle-stage gas-liquid separation chamber is configured for gas-liquid separation.

Abstract: A rotation mechanism (20) of a vacuum pump (100) includes a magnetic bearing unit (21) having a first outer diameter (91), the magnetic bearing unit (21) being operable as a first radial magnetic bearing (40), and a motor unit (22) provided on a side of a second end (11b) of a rotary shaft (11) relative to the magnetic bearing unit, the motor unit (22) having a second outer diameter (92) larger than the first outer diameter, the motor unit (22) being operable as both a motor (30) and a second radial magnetic bearing (50).

Abstract: A pressurization dehydrator comprising an air compressor and a controller connected to enable automatic operation of the dehydrator. The dehydrator is implemented as a freestanding, bench-top unit having a housing that encloses a baffle plate on which the compressor is mounted. The bottom panel of the housing is affixed to the plate using dampers inserted therebetween. The plate has legs protruding through the corresponding openings in the bottom panel for supporting the whole unit in the upright position on the bench top. Some or all of the legs may not have contact with edges of the openings. In operation, the legs provide an efficient mechanical pathway for transferring some vibrational energy of the plate to the bench top, thereby diverting said energy away from the housing. The circuit board of the controller is affixed to the housing, which beneficially reduces vibration levels transferred to the electronic components of the controller.

Abstract: There are several methods to propel moving force points on a pumping unit. One of the embodiments is propulsion utilizing permanent magnets. This invention can aid the several methods and provides the push start that allows initiating permanent magnet propulsion. This invention relates to an end return device for assisting positioning drives to actuate the continuous movement by mechanical means of moving force points to a desired advantageous position at a desired advantageous moment to achieve reduced net torque when lifting or lowering an unbalanced load with a beam with a fulcrum and connected to a load and an effort. In one embodiment, a walking beam well pumping unit, the lifting and lowering of the well load can be caused by the reciprocating motion of a beam tipping on a fulcrum and with moving effort force point, moving crank shaft force point, and moving beam weight force point.

Abstract: A semicircular rotation prevention part for preventing rotation of a piston of a hydraulic unit of an externally-powered hydraulic vehicle brake system. The rotation prevention part is positioned in a congruent widened section at a mouth of a cylinder bore of a hydraulic block of the hydraulic unit and includes axially parallel rotation prevention grooves on its inner circumference, with which shoulders projecting outwards from the piston engage.

Abstract: Multiple diaphragm pumps are known in the art that are operated by compressed air and in which the valves are controlled by a slide element. The slide element is magnetically actuated without mechanical engagement involved in the actuation. This has the consequence that only a small amount of force can be applied which may not be sufficient due to static friction of the valve seal. The invention presents a hybrid solution which facilitates a mechanical actuation of a valve piston provided for valve control as well as a magnetic overcoming of a dead center that may be reached by the valve piston and the diaphragm piston that actuates the diaphragms of the multiple diaphragm pump.

Abstract: A system for detecting dry running of a pump includes an inlet device to an intake device of the pump for taking in an electrically conductive liquid, and an electrical resistance structure (20) arranged in the inlet device. The electrical resistance structure has a variable resistance value, dependent on wetting with the electrically conductive liquid.

Abstract: A fallback prevention valve apparatus, system and method is described. An electric submersible pump (ESP) fallback prevention system includes an ESP assembly positioned in a downhole well, the ESP assembly including production tubing extending between a centrifugal pump and a surface of the downhole well such that during operation of the ESP assembly production fluid flows upward from the centrifugal pump through the production tubing to the surface, the production tubing including a fallback valve actuatable by the flow of production fluid, the fallback valve actuatable between an open position, wherein production fluid flowing upward through the fallback valve actuates the fallback valve into the open position, and a closed position, wherein production fluid flowing downward through the fallback valve actuates the fallback valve into the closed position, the closed position blocking sand carried by the production fluid from falling into the centrifugal pump.

Abstract: A compressor includes: a case, a compression unit that is provided inside the case and that includes a cylinder and a piston configured to reciprocate inside the cylinder to compress refrigerant, a driving unit that includes a stator disposed inside the case and a plurality of permanent magnets configured to reciprocate with respect to the stator and that is configured to provide a driving force to the compression unit, and a resonator that is configured to reduce noises generated while the compression unit is operated, that is disposed between the compression unit and an inner surface of the case facing the compression unit in an axial direction, and that is spaced apart from the compression unit.

Abstract: A vacuum pump includes: a casing formed with an inlet port or outlet port; a stator disposed inside the casing; and a rotor enclosed in the casing and including a shaft rotatably supported on the stator, and a rotor blade formed in a cylindrical shape with a plurality of blades arranged in multiple stages on an outer circumferential portion thereof, and secured to the shaft such as to be integrally rotatable therewith. The rotor blade is provided with a rupture location control groove as a rupture location control means that locally reduces rigidity of the rotor blade to control a location where the rotor blade ruptures.

Abstract: A fluid machine includes an electric motor, a pump, an inverter, and a housing having a motor chamber and an inverter chamber. The housing has a cooling passage having an inverter cooling passage and a motor cooling passage through which cooling fluid flows. After the cooling fluid is introduced to the inverter cooling passage, a flow of the cooling fluid is divided at the inlet into a flow of the cooling fluid flowing through the inverter cooling passage and a flow of the cooling fluid flowing through the motor cooling passage, the flow of the cooling fluid flowing through the inverter cooling passage and the flow of the cooling fluid flowing through the motor cooling passage are joined together at the outlet and discharged from the inverter cooling passage. The inverter cooling passage has a passage expanded portion in which a vortex flow is generated.