Abstract: The compact annular linear pump has a duct, with an inlet and an outlet, positioned to surround an inner core. The duct has a fluid with paramagnetic properties disposed within it. Surrounding the duct is a stator having a first end and a second end. The stator has a plurality of slots that is divisible by three. There is a tooth at each end of the stator and between each slot. There is an electromagnetic circuit with three conductors wired in series disposed within the stator. Within each slot is a coil. Each of the three conductors travel through the stator by alternating through pairs of slots, each coil belonging to a single conductor and alternating conductors every third coil pair. The fluid travels from the inlet to the outlet by application of a current generator to the electromagnetic circuit creating a magnetic flux.

Abstract: A fluid end assembly comprising a plurality of fluid end sections positioned in a side-by-side relationship. Each section comprises a housing containing a reciprocating plunger. One and only one packing seal is installed within the housing and surrounds and engages an outer surface of the plunger. A retainer compresses and holds the packing seal within the housing. The retainer is secured to the housing using a clamp, such that no threads are formed in the housing of the fluid end section and no threads are formed in the retainer.

Abstract: A system for cooling plungers which operate in high pressure pumps. The system uses a plunger having a blind bore formed therein. The blind bore may receive a number of different objects, some of which are fixed to the plunger. A heat exchanger may be installed within the blind bore. The heat exchanger may have internal passages or openings which allow for the circulation of fluid within the blind bore, thus cooling the plunger. The heat exchanger may be formed of a material having a higher thermal conductivity than the material used to form the plunger. This allows the heat exchanger to cool the plunger more effectively than if the plunger were solid or filled with an empty air space. The heat exchanger may be sealed within the bore of the plunger, or exposed.

Abstract: A cartridge assembly for use in a high pressure pump according to an exemplary aspect of the present disclosure includes, among other things, a cartridge housing. A bore extends through the cartridge housing from a valve end to a packing end. A valve assembly is arranged in the valve end of the bore and configured to abut a valve seat. The bore has a constant diameter between the valve assembly and the packing end. The cartridge assembly is designed to be used in a fluid pump at a fluid pressure of at least 30,000 psi.

Abstract: A tube pump having a housing in which a large diameter flexible tube is arranged along a lateral wall formed to have a substantially horseshoe shape, and a roller that moves along the lateral wall of the housing. Between a blockage section which pressures and blocks the large diameter tube and a separation section shaped so as to gradually extend away from the rotation center, the lateral wall is provided with a pressure release section having an arc with a radius larger than the blockage section. While the roller is moving through the pressure release section, a communication opening is formed in the large diameter tube pressured by the roller so as to allow communication between a part positioned on an upstream side and a part positioned on a downstream side of the roller, while a size of the communication opening is maintained to constant.

Abstract: An ejector device comprises a housing (110) having a motive fluid inlet (111) to receive motive fluid, a suction fluid inlet (112) to receive suction fluid and a fluid outlet (113) to output the motive fluid and the suction fluid. The ejector device comprises a nozzle and diffuser assembly (150) configured to fit within the housing (110). The nozzle and diffuser assembly (150) comprises a nozzle (160), a diffuser (170) and a connecting structure (180) connecting the nozzle (160) to the diffuser 170. The connecting structure (180) is configured to permit fluid flow between the nozzle (160) and the diffuser (170). The connecting structure (180) has apertures (182) configured to allow fluid to be drawn into the fluid flow between the nozzle 160 and the diffuser (170).

Abstract: Provided is a reciprocating pump including: pump sections that are disposed in parallel with each other, each of the pump sections including a suction part for inflow of fluid, and a discharge part for outflow of fluid; a suction-side fluid passage for connection between the suction parts of the pump sections; and a discharge-side fluid passage for connection between the discharge parts of the pump sections; each of the pump sections includes a suction valve that allows and blocks circulation of fluid to be sucked, and a discharge valve that allows and blocks circulation of fluid to be discharged; a suction-valve operation member that opens the suction valve from outside; and a discharge-valve operation member that opens the discharge valve from outside. The suction-side fluid passage and the discharge-side fluid passage are expandable and contractible in a pipe axial direction.

Abstract: An exhausting system capable of preventing gas condensation and early overheat in a vacuum pump without causing an increase in the costs of the entire exhausting system and suitable for relaxing the operable conditions of the entire exhausting system including a flow rate at which gas is successively exhausted. An exhausting system is predicated on a constitution including: at least a first vacuum pump and a second vacuum pump connected in series; and a connecting portion disposed therebetween, the exhausting system exhausting gas containing a condensable gas via the vacuum pumps and the connecting portion. In the exhausting system, an environment inside the connecting portion is set to an environment having a vapor phase region below a vapor pressure curve of the condensable gas flowing through an inside of the connecting portion by providing the second vacuum pump near the first vacuum pump.

Abstract: An air treatment system includes an electric compressor for compressing air, an air flow valve positioned in a delivery line downstream of the electric compressor, and an electropneumatic valve connected to the air flow valve. A controller having control logic receives a system pressure and activates the electropneumatic valve. The control logic activates the electropneumatic valve to provide a pneumatic control signal to the air flow valve to partially close the delivery line in response to the system pressure being greater than a first predetermined pressure.

Abstract: A light-weight reciprocating element is disclosed. The reciprocating element may include a body defining a cavity, the body having a closed distal end and an open proximal end opposite the closed distal end, wherein the body is configured to apply a pressure to a working fluid. The cavity extends from the open proximal end towards the closed distal end. The reciprocating element may include an insert disposed in the cavity, the insert is configured to prevent debris from accumulating within the cavity.

Abstract: A rotary pump for a fluid metering system is provided. The rotary pump reciprocates, and is reversed by a signal from a limit switch that is deflected by an actuator arm on a rotating sleeve of the pump system.

Abstract: A driveline assembly for use with a well-servicing pump system is disclosed. The driveline assembly comprises a stub shaft attachable to one of a pump or a motor, a flange shaft attachable to the other of the pump or the motor, and a coupling assembly comprising a drive-transfer cylinder and a spring-loaded locking sleeve. In a drivingly-engaged position, rotary drive motion of the motor is transferred to the pump. In an unlocked position, the locking sleeve allows the drive-transfer cylinder to move axially from the drivingly-engaged position where the drive-transfer cylinder connects and transfers rotary drive between the flange shaft and the stub shaft to the drivingly-disengaged position where the drive-transfer sleeve disconnects and allows relative rotation between the flange shaft and the stub shaft. In a locked position, the locking sleeve locks the drive-transfer cylinder in one of either the drivingly-engaged position or the drivingly-disengaged position.

Abstract: A blower may include an inlet, an outlet, an airflow pipe disposed between the inlet and the outlet, a fan disposed in the airflow pipe, an electric motor disposed in the airflow pipe and configured to drive the fan, a motor housing that is disposed in the airflow pipe and houses the electric motor, and a control unit configured to control the electric motor. The control unit includes a control board configured to control the electric motor and a casing that houses the control board. The airflow pipe may include an exposure hole connecting inside of the airflow pipe to outside of the airflow pipe such that the inside and the outside are in communication in a radial direction. The casing may be attached to the airflow pipe such that at least part of the casing covers an entirety of the exposure hole from outside in the radial direction.

Abstract: A fracturing apparatus is provided. The fracturing apparatus includes a plunger pump, a transmission shaft, a main motor, an oil pipe, a first radiator and a noise reduction cabin. The main motor is spaced apart from the plunger pump, the plunger pump is connected with the main motor through the transmission shaft; the oil pipe is configured to be connected with the plunger pump; the first radiator is spaced apart from the plunger pump, the first radiator is configured to dissipate heat from oil in the oil pipe, the main motor, the first radiator and at least part of the oil pipe are all located inside the noise reduction cabin, and the plunger pump is located outside the noise reduction cabin.

Abstract: There is provided a kitchen appliance apparatus for using air in the kitchen, comprising a housing, wherein in the housing a pump system is provided which pump system comprises, a primary port (106), a secondary port (107), a single direction air pump (101) having an inlet (102) and an outlet (103); wherein the pump system is operational in a first pump mode in which air can be sucked in via the primary port; the pump system is operational in a second pump mode in which air can be blown out via the primary port; and is operational in a third pump mode in which the pump system is alternatingly sucking in and blowing air via the primary port.

Abstract: An assembly and process for draining fluid leaks from a pump housing is disclosed. The pump housing includes an internal mounting cavity, a valve installed in the mounting cavity and at least one housing passage extending to an exterior surface of the pump housing. A valve passage is formed through a wall of the valve. An interior fluid seal is installed on an interior surface of the valve forming a seal between the valve interior surface and a first surface of the mounting cavity. An exterior fluid seal is installed on an exterior surface of the valve that forms a seal between the valve exterior surface and a second surface of the mounting cavity. An inner leak path is created through the interior fluid seal to the valve passage. The valve passage collects fluid leaking in the inner leak path. An outer leak path is created through the exterior fluid seal. The outer leak path in fluid communication with the valve passage and with the housing passage.

Abstract: A pump is provided, where the pressure of solutions in the pump, having electrical conductivity, can be increased without needing usage of mechanical parts. The pump includes: a primary medium associated with an input port of an ejector, a secondary medium associated with a suctioning port, a primary electrode provided in the primary medium, a secondary electrode provided in the secondary medium, a power supply associated to the primary electrode and the secondary electrode, an ion selective membrane and a pressure retaining membrane which separate the primary medium and the secondary medium from each other.

Abstract: A linear compressor is provided. The linear compressor includes a cylinder, a piston configured to reciprocate inside the cylinder, the piston including a head portion and a sliding portion extending rearward from a radially outer edge of the head portion, a supporter including a plate disposed at a rear of the piston, an elastic body disposed in the piston, the elastic body including an outer side coupled to an inner circumferential surface of the piston, and a rod configured to extend axially, the rod including one side coupled to a radially central area of the elastic body and other side connected to a radially central area of the plate.

Abstract: An electric compressor includes a housing, a refrigerant inlet port, a refrigerant outlet port, an inverter module, a motor, a drive shaft, a cylindrical sleeve, and a compression device. The refrigerant inlet port is coupled to the housing and configured to introduce the refrigerant to an intake volume. The refrigerant outlet port is coupled to the housing and is configured to allow compressed refrigerant to exit a discharge volume. The inverter module is adapted to convert direct current electrical power to alternating current electrical power. The motor is mounted inside the housing. The cylindrical sleeve has a tubular side wall and a top cover defining an interior cavity. The interior cavity has an open end. The cylindrical sleeve is configured to receive the motor therein and constrain the motor within interior cavity.

Abstract: A scroll electric compressor includes a housing, a rotary shaft, an electric motor, a fixed scroll, an orbiting scroll, a compression chamber, a discharge chamber, and an oil storage chamber. The housing has a discharge housing including an end wall, a first peripheral wall, a stepped portion, and a second peripheral wall. The fixed scroll has a flange in contact with the second peripheral wall. The stepped portion, the second peripheral wall, the flange, the outer peripheral wall cooperate to define an annular space around the fixed scroll. The annular space is in communication with the discharge chamber or the oil storage chamber.