Abstract: A cover, a fluid end and a plunger pump are provided. The cover includes: a body, the body being cylindrical, and the body including a first end, a second end, and a side surface connecting the first end and the second end; a main flow channel extending along an axis of the body; a plurality of subsidiary flow channels, each of the plurality of subsidiary flow channels being communicated with the main flow channel; a first opening, located at the first end and communicated with the main flow channel; and a plurality of second openings, located at the side surface of the body; each of the plurality of subsidiary flow channels being communicated with at least one of the plurality of second openings.

Abstract: An air compressor improves the dustproof performance of an intake path to a crankcase. The air compressor includes a compression assembly that reciprocates a piston in a cylinder to produce compressed air, a crankcase accommodating the compression assembly and having an inner inlet to allow outside air to be drawn, a filter located in the crankcase and covering the inner inlet from outside, a filter cover having an outer inlet and covering the filter from outside, and a dust cover covering the filter cover from outside, covering the outer inlet, and including an outer circumferential portion. The outer circumference portion and the filter cover have a space to draw outside air between the outer circumference portion and the filter cover.

Abstract: To provide a simple blower which can suppress the infiltration of a target gas into a shaft hole and having a small size and cost reduction, a blower comprising a first casing (11) formed with a gas passage (11c) for introducing a high temperature gas and a shaft hole (11e) for communicating therewith, a rotating shaft (14) inserted to be freely rotatable within the shaft hole (11e), an impeller (13) housed within the first casing (11) which integrally rotates with the rotating shaft (14), a motor (15) for driving the rotating shaft (14) from the rear end side, a second casing (12) having an interior space (21) which communicates with the shaft hole (11e) and supporting the rotating shaft (14) via bearing (22A, 22B), and a purge gas introduction means (16) which introduces to the interior space (21), a purge gas having a higher pressure than a pressure of the shaft hole (11e), wherein the inflow of an exhaust gas into the shaft hole (11e) from the gas passage (11c) side of the first casing (11) is suppressed

Abstract: A swash plate compressor includes a cylinder block accommodating a piston for compressing a refrigerant, a front housing coupled to the cylinder block and having a crank chamber, a rear housing having a suction chamber and a discharge chamber and coupled to the cylinder block, and a suction reed plate inserted between a valve plate and the cylinder block. The swash plate compressor includes: a first orifice hole through which the refrigerant in the crank chamber passes; a second orifice hole communicating between the first orifice hole and the suction chamber; an intermediate flow path configured to connect the first orifice hole and the second orifice hole; and the valve plate inserted into the rear housing and having a suction chamber pressure-maintaining space connected to the suction chamber and configured to maintain a pressure equal to a pressure in the suction chamber.

Abstract: A gas compressor system includes a compression liquid holding tank in fluid communication with a combustion tank. A combustible fluid is directed to the combustion tank. An ignition system is provided for igniting the combustible fluid. A compression liquid flows between the liquid holding tank, the combustion tank, and a compression tank. A compressible gas is provided in the compression tank. The ignition of the combustible fluid drives the compression liquid from the combustion tank to the compression tank, compressing the compressible liquid. An HVAC&R system and a method of compressing gas are also disclosed.

Abstract: A compressor includes a casing accommodating a compression mechanism, a detection device having a detection face configured to detect an internal state of the casing, an elastic member, and a cover mounted to the casing to cover the detection device and a part of the elastic member. The detection face is located opposite an outer peripheral face of the casing. The elastic member includes a first portion overlapping the detection device and a second portion not overlapping the detection device, as seen in plan view. The cover is configured to press the second portion of the elastic member against the casing, with the first portion of the elastic member pressing the detection device against the casing.

Abstract: The bundle compressor to a bundle motor for compressor unit compressor unit includes one at fastening device configured to fasten the compressor bundle to a motor casing of the motor compressor unit, and also includes at least one opening sized to couple a motor rotor and a compressor rotor through the at least one opening.

Abstract: A linear compressor includes a casing, a back cover supported in the casing, an intake flow path member coupled to the back cover, and an intake muffler of which at least a portion linearly reciprocates inside the intake flow path member. The intake flow path member includes a first hole that is formed in a front surface and is penetrated by the intake muffler, and a flow path guide that extends axially forward from a rear surface and has an opened front and an opened rear. A noise of a refrigerant passing through the intake flow path member can be reduced through an expansion space between the flow path guide and an inner surface of the intake flow path member.

Abstract: An assembly for dispersing a lubricant upon a long stroke oil well rig's chain coupling roller trolley, the assembly incorporating a track frame receiving the roller trolley for leftward and rightward rolling motions; at least a first dip bucket fixedly attached to a lower end of the track frame; a front nozzle connected operatively to the at least first dip bucket for rearwardly emitting portions of the lubricant; an underlying lubricant well adapted for receiving and filling the at least first dip bucket; a rear conduit positioned for collecting the rearwardly emitted portions of the lubricant; a collection pocket underlying the rear conduit; a rear nozzle connected operatively to the collection pocket for forwardly emitting the portions of the lubricant toward the roller trolley.

Abstract: Devices and method include relatively moving elements having one or more bearing surfaces defining a gap between the elements into which a fluid is received. At least one of the bearing surfaces comprises a varying topography to provide pressurized volumes of the fluid in order to define a hydraulic bearing to support at least one of the elements during movement.

Abstract: A vane pump includes a casing, a rotor, vanes, a motor, and a fixed member. The casing defines a pump chamber therein. The rotor is disposed in the casing and configured to eccentrically rotate relative to the casing. The vanes are configured to rotate together with the rotor to slidably move on an inner surface of the casing. The motor is configured to rotate the rotor. Both the motor and the casing are fixed to the fixed member. The casing has an outer side wall surface and a flange. The flange protrudes outward from the outer side wall surface at an intermediate position between both ends of the pump chamber in a rotational axis direction of the rotor. The flange is fixed to the fixed member at a plurality of positions. The fixed member has a linear expansion coefficient that is different from that of the casing.

Abstract: A control device for regulating a volume flow of a fluid in a drive train of a motor vehicle includes a torque monitoring unit, set up to determine, on the basis of a characteristic diagram of the pump which describes a functional dependency of the torque to be applied by the drive motor on the rotational speed of the drive motor for a predetermined fluid state of the fluid, a current torque deviation occurring between the current torque and the torque given by the characteristic diagram for the current rotational speed, and a correction unit, set up to correct a power setting signal for the drive motor in accordance with the current torque deviation and to provide a corrected power setting signal, and a power regulation unit, set up to generate a second power setting signal for actuating the drive motor on the basis of the corrected power setting signal.

Abstract: A fluid end made of a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section is made of a housing having a discharge bore and an intake bore formed therein. A fluid routing plug is installed within each housing and is configured to route fluid throughout the housing and between the discharge and intake bores. The fluid routing plug carries seals that engage sealing surfaces formed within the housing. A number of features, including the location of seals within bore walls and carbide inserts within valve guides, aid in reducing or transferring wear within each housing.

Abstract: A fluid end comprising a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section is releasably attached to a connect plate. Each connect plate is attached to a power source using a plurality of stay rods. Each fluid end section comprises a housing in fluid communication with a pair of intake manifolds and a discharge conduit. A fluid routing plug is installed within each housing and is configured to route fluid throughout the housing. A plunger is installed within stuffing box attached to each housing. A number of features, including the location of seals within bore walls and carbide inserts within valve guides, aid in reducing or transferring wear.

Abstract: Pump assemblies, pumping systems including said pump assemblies, and related methods are disclosed. In an embodiment, the pump assembly includes a frame, a fluid end, and a power end coupled to the frame and the fluid end. In addition, the pump assembly includes a plurality of connectors coupled between the fluid end and the frame. Each of the connectors include an axis, a first connector member, and a second connector member. The first connector member is configured to actuate relative to the second connector member to adjust a total axial length of the connector along the axis.

Abstract: A fracturing apparatus includes: a plunger pump having a hydraulic end and a power end, wherein the power end comprises a power end oil outlet and at least one power end oil inlet that are coupled to each other; a power end lubricating system, including a lubricating oil tank defining an accommodation space, at least one lubrication pump having a lubrication pump oil inlet and a lubrication pump oil outlet that are coupled to each other, and at least one lubrication motor configured to provide power for the at least one lubrication pump; a temperature detector disposed on any one of the oil return pipeline, the power end oil outlet, and the lubricating oil tank; and a control system connected to the temperature detector and the power end lubricating system and configured to control the power end lubricating system.

Abstract: Impeller bearings for pumps are disclosed. An example fluid pump includes a motor, a shaft coupled to a rotor of the motor, an impeller coupled to the shaft, a first radial bearing positioned around the shaft of the motor aft of the motor, and a second radial bearing positioned around the impeller.

Abstract: An electromechanically drivable brake pressure generator for a hydraulic braking system of a vehicle. The electromechanically drivable brake pressure generator includes an electric motor for generating a input speed, a planetary gear set that is driven by the electric motor on the input side to decrease a gear ratio of the input speed, and a hydraulic module that is connected to the planetary gear set on the output side to generate a brake pressure. The planetary gear set includes stepped planets that are connected to a sun wheel of the planetary gear set on the input side and to an output component of the planetary gear set on the output side.

Abstract: A rod-pump control device is disclosed. The rod-pump control device uses AMP (current) measurements for electric units, fuel or air usage for gas units, and can use pressure for either unit. The AMP/fuel/air sensors work as the primary trigger to indicate a pump-off condition on an oil and gas well. These sensors can be used as stand-alone triggers or in conjunction with other sensors to more accurately monitor pump efficiency. When the pump-controller starts to indicate an inefficient pump condition, it will turn the pump off by removing power from the electric motor. For gas powered units, the controller will remove power to disengage an electric clutch or send a signal to an engine controller to stop. An adjustable algorithm will use percentage change of off time, dependent on actual run time compared to a user definable target time to keep the pump operating at peak efficiency.

Abstract: An electric water pump including a rotor assembly, wherein the rotor assembly includes an iron core body having a central through-hole, a plurality of magnetic plates disposed inside the iron core body, a first plastic coating layer for enclosing the iron core body, and a second plastic coating layer. At least one protruding rib is provided on a top surface and/or a bottom surface of the first plastic coating layer, a recess matching the protruding rib is provided on the second plastic coating layer, and the first plastic coating layer can drive the second plastic coating layer to rotate relative to an axis of the central through-hole of the iron core body.