2626results about "Multi-cylinder pumps" patented technology

An embodiment of a fluid end of a pump includes a housing including a plurality of pumping chambers. Each pumping chamber configured to receive a plunger therein. In addition, the housing includes a plurality of outlet ports, each being in fluid communication with a corresponding one of the plurality of pumping chambers. The fluid end also includes a discharge manifold assembly connected to the housing and positioned to receive fluid discharged from the plurality of pumping chambers. The discharge manifold assembly including a single-piece, monolithic body having a plurality of discharge bores and a manifold bore defined therein, the manifold bore being in fluid communication with the plurality of discharge bores, the plurality of discharge bores positioned to align with the plurality of outlet ports, and each of the plurality of discharge bores being configured to at least partially receive a corresponding discharge valve assembly therein.

A fluid end includes a housing having a bore extending toward a cavity and a wear sleeve positioned within the bore. The fluid end also includes a plunger positioned within a plunger bore extending through the wear sleeve, the plunger reciprocating within the plunger bore. The fluid end further includes a wear sleeve retainer coupled to the housing and positioned to block axial movement of the wear sleeve, the wear sleeve retainer having external threads along a body that engage internal threads formed in the housing. The fluid end also includes an anti-rotation system, coupled to the housing, the anti-rotation system engaging the wear sleeve retainer to block rotation of the wear sleeve retainer in at least one direction. The fluid end further includes a packing nut coupled to the wear sleeve retainer.

A packing assembly includes a packing sleeve having a first sleeve portion and a second sleeve portion, wherein a first sleeve portion outer diameter is larger than a second sleeve portion outer diameter and a first sleeve portion inner diameter is larger than a second sleeve portion inner diameter. The packing assembly also includes a groove formed in the second sleeve portion outer diameter. The packing assembly further includes a shoulder formed at a transition between the first sleeve portion and the second sleeve portion. The packing assembly includes a shelf formed at the transition between the first sleeve portion and the second sleeve portion. The packing assembly also includes a plurality of packing components arranged within the first sleeve portion inner diameter, at least a portion of the plurality of packing components engaging the shelf. The packing assembly further includes a seal positioned within the groove.

A valve member for a spring-loaded valve assembly includes a top portion having a spring retaining recess, the spring retaining recess extending into the top portion to form a void space, the void space to receive at least one coil of a spring, the spring retaining recess having a recess diameter that is smaller than a top portion diameter, wherein the recess diameter is larger than a rest diameter of a spring base including the coil, the spring retaining recess blocking expansion of the at least one coil when the spring is compressed. The valve member also includes a bottom portion coupled to the top portion. The valve member further includes a sealing element positioned axially below a shoulder of the top portion and legs coupled to the bottom portion.

A packing assembly includes a packing sleeve having a first sleeve portion and a second sleeve portion, wherein a first sleeve portion outer diameter is larger than a second sleeve portion outer diameter and a first sleeve portion inner diameter is larger than a second sleeve portion inner diameter. The packing assembly also includes a groove formed in the second sleeve portion outer diameter. The packing assembly further includes a shoulder formed at a transition between the first sleeve portion and the second sleeve portion. The packing assembly includes a shelf formed at the transition between the first sleeve portion and the second sleeve portion. The packing assembly also includes a plurality of packing components arranged within the first sleeve portion inner diameter, at least a portion of the plurality of packing components engaging the shelf. The packing assembly further includes a seal positioned within the groove.

A fluid end includes a housing having a bore extending toward a cavity and a wear sleeve positioned within the bore. The fluid end also includes a plunger positioned within a plunger bore extending through the wear sleeve, the plunger reciprocating within the plunger bore. The fluid end further includes a wear sleeve retainer coupled to the housing and positioned to block axial movement of the wear sleeve, the wear sleeve retainer having external threads along a body that engage internal threads formed in the housing. The fluid end also includes an anti-rotation system, coupled to the housing, the anti-rotation system engaging the wear sleeve retainer to block rotation of the wear sleeve retainer in at least one direction. The fluid end further includes a packing nut coupled to the wear sleeve retainer.

A valve includes a valve disc movable along an axial direction and has an arcing outer engagement surface with an axis of curvature transverse to the axial direction. A valve seat defines a central opening aligned with the axial direction. The valve seat has a toroidal radially inner engagement surface around the central opening configured to engage the engagement surface of the valve disc in a closed position. The engagement surface of the valve disc and the engagement surface of the valve seat are configured to form a line of contact between the outer engagement surface and the inner engagement surface. The engagement surfaces of the valve disc and of the valve seat may be a carbide or ceramic material having a hardness of 1000 HV or more.

A fluid end includes a housing having a bore extending toward a cavity and a wear sleeve positioned within the bore. The fluid end also includes a plunger positioned within a plunger bore extending through the wear sleeve, the plunger reciprocating within the plunger bore. The fluid end further includes a wear sleeve retainer coupled to the housing and positioned to block axial movement of the wear sleeve, the wear sleeve retainer having external threads along a body that engage internal threads formed in the housing. The fluid end also includes an anti-rotation system, coupled to the housing, the anti-rotation system engaging the wear sleeve retainer to block rotation of the wear sleeve retainer in at least one direction. The fluid end further includes a packing nut coupled to the wear sleeve retainer.

The present application discloses a coaxially integrated servo motor pump with integrated drive control functions, comprising a motor pump housing, a controller housing, and an electrical connector. The motor pump housing is provided with a blind hole, a first cavity for accommodating a plunger pump assembly, and a second cavity for accommodating a servo motor assembly, wherein the plunger pump assembly and the servo motor assembly are connected via a rotating shaft. The controller housing is connected to one end of the motor pump housing, and a drive controller is provided within the controller housing. The blind hole communicates with the second cavity, and the electrical connector is sealed and connected to the blind hole, and the electrical connector is electrically connected to the servo motor assembly and the drive controller. The distribution plate and the sealing assembly are respectively sealed with both ends of the motor pump housing. Cooling is achieved through a cooling oil channel, which connects from one end of the motor pump housing near the plunger pump assembly to the second cavity and then divides into two paths, one path passing through the center of the rotating shaft, and the other path connecting to the first cavity and passing through the distribution plate. The coaxial integration of the drive control functions is achieved, and the cooling effect is good.

A reversible hydraulic pump for setting the pitch of a propellor of a turboprop can include two barrels connected by a transmission shaft. The first and second barrels are connected to the transmission shaft via first and second clutch means so that, when the transmission shaft rotates in a first direction, only the first barrel is rotated by the transmission shaft, and so that, when the transmission shaft rotates in a second direction opposite to the first direction, only the second barrel is rotated by the transmission shaft.

A counterflow guide includes a body with a first end surface, a second end surface positioned opposite the first end surface, and a sidewall connecting the first end surface to the second end surface. The counterflow guide also includes a discharge passage configured to direct a fluid to discharge through the body, from a discharge inlet to a discharge outlet. The discharge inlet is formed in the sidewall and the discharge outlet is formed into the first end surface.

A fluid end includes a first sleeve associated with a plunger bore, a second sleeve assembly associated with a suction bore, and a packing sleeve retainer positioned at the plunger bore to axially retain a packing sleeve of the first sleeve assembly within the plunger bore, the packing sleeve retainer being coupled to a front face of the fluid end. The fluid end further includes a suction ring positioned at the suction bore to axially retain a suction sleeve of the second sleeve assembly within the suction bore, the suction ring being coupled to a rear face of the fluid end.

A fluid end having a reciprocating plunger installed within. The plunger may have a bore formed therein, and a valve assembly attached to one end of the plunger. The valve assembly may engage a valve seat situated within the plunger. The plunger may contain a sleeve which engages part of the valve assembly. The fluid end may be connected to an inlet manifold which is situated above the fluid end. The inlet manifold may be situated on a power end. The fluid end may be made of a static section and a plurality of dynamic sections threaded therein.

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.

A fluid end assembly made of a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section comprises a plurality of individual components joined together in a row. Two sets of fasteners are used to secure various components of each fluid end section together. When the fluid end section is assembled, a first set of fasteners is in a spaced relationship with and faces a second set of fasteners. At least one component making up the multi-piece fluid end section is configured to have a plurality of stay rods attached thereto. The stay rods interconnect the fluid end assembly and a power end assembly.

A fluid end made of a housing and a plunger reciprocating therein. The plunger has a hollow bore formed therein, and a valve assembly situated on one end of the plunger. The plunger may have a sleeve situated within the bore that aids in the installation of the valve assembly. The plunger may have a second bore extending perpendicularly from the hollow bore. The first bore may be connected to an attachment piece which connects to a conduit. The conduit may then be connected to a manifold which is configured to provide a fluid to the plunger's bore. The housing may be made of a static section and a plurality of dynamic sections. The dynamic sections may thread into the housing. The static section may be made of two pieces to aid with installation of a dynamic seal.

A fluid end for use with a power end. The fluid end comprises a plurality of fluid end sections positioned adjacent one another. Each section includes a single horizontally positioned bore. A plunger is installed within the bore and includes a fluid passageway. Low-pressure fluid enters the bore through the plunger and high-pressure fluid exits the fluid end through an outlet valve installed within the bore. The intake of low-pressure fluid within the fluid end section is regulated by an inlet valve installed within the plunger. Low-pressure fluid enters the plunger through an inlet component attached to both the plunger and an inlet manifold.

The present invention relates to the technical field of plunger pumps, and in particular, to a plunger assembly and a plunger pump. The plunger assembly comprises a cylinder unit, a plunger unit and a slipper unit. The plunger unit is slidably inserted in the cylinder unit; a plunger cavity is formed between the end of the plunger rod of the plunger unit away from the plunger ball head and the cylinder unit; a weight reduction cavity in the plunger rod passes through to the end of the plunger rod away from the plunger ball head; a partition in the weight reduction cavity divides the weight reduction cavity into a buffer cavity and a connecting cavity; the connecting cavity is connected to the plunger cavity; the oil through hole in the plunger ball head is connected to the connecting cavity; a first shock-absorbing hole formed at one end of the partition near the plunger cavity is respectively connected to the buffer cavity and the plunger cavity; a second shock-absorbing hole at one end of the partition near the plunger ball head is respectively connected to the buffer cavity and the oil through hole; the slipper unit is spherically hinged with the plunger ball head; one end of the oil through hole passes through to the surface where the plunger ball head and the slipper unit fit. In this way, the problem of how to reduce pressure pulsation in the plunger assembly is solved.

A pumping system, comprising: a pump fluid end comprising a plurality of pump chambers, each pump chamber comprising a bore having a reciprocatable plunger disposed therein, a suction valve, and a discharge valve; a prime mover mechanically coupled to the fluid end [by a drivetrain] and configured to reciprocate the plungers; and a controller communicatively coupled to the prime mover, the fluid end, or both and configured to alert a user re a pump malfunction, initiate corrective action of the pump malfunction, or both in response to: (a) an indication of torque reversal during operation of the pumping system, (b) an indication of negative flow rate from the pump during operation of the pumping system, (c) an indication of leakage of (i) a single discharge valve in a 3-plunger pump or (ii) discharge valves associated with two plungers in adjacent firing order, or (d) any combination of (a)-(c).

A mobile pump system for pumping water for extinguishing with an auxiliary agent, and a method therefor. The mobile pump system includes a frame for housing the pump system, a booster pump arranged in the frame, a metering pump arranged in the frame for the purpose of adding an auxiliary agent to a water flow, and a drive configured to drive the booster pump and the metering pump. The metering pump is provided with a displaceable metering pump frame and coupling means for connecting the metering pump to a container of the auxiliary agent.

The invention discloses a gear and gear ring transmission high-speed and high-pressure axial connecting rod plunger device, which relates to the technical field of hydraulic transmission and control, and comprises a cylinder body rotatably arranged in a shell accommodating cavity, a transmission shaft in transmission connection with the cylinder body, a gear ring connected with the cylinder body, a crowned tooth return plate obliquely arranged and driven by the gear ring, and a plunger slidably arranged in a cylinder body hole, the sliding shoe friction mechanism is arranged in the containing cavity, the sliding shoe is attached to the wear-resisting lining plate, the sliding shoe is connected with the plunger through a connecting rod, the flow distribution friction mechanism is arranged in the containing cavity, the floating lining plate is connected with the cylinder body through a floating sleeve, and the flow distribution plate is connected with the rear end cover. By adopting gear and gear ring transmission, lateral force borne by a plunger in an axial plunger pump or a motor can be eliminated, and the risk that a plunger ball head portion loses efficacy is avoided. During working, the gear ring and the cylinder body rotate synchronously, and the crowned tooth return plate rotates synchronously under the action of the gear ring, so that the stress states of the sliding shoes and the plungers are greatly improved, the reliability of the structure is improved, and the service life of the structure is prolonged.

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.

The invention provides an ultrahigh-pressure vertical plunger pump. The ultrahigh-pressure vertical plunger pump comprises a plunger pump base, a plunger pump body and a plunger pump cover. A transmission structure is arranged on the inner side of the plunger pump base, a receding hole communicated with an inner cavity of the plunger pump base is formed in the upper end of the plunger pump base, and the output end of the transmission structure extends into the receding hole. A water inlet hole is formed in the side wall of the plunger pump body, a high-pressure cylinder is arranged on the inner side of the plunger pump body, a water passing hole is formed in the side wall of the upper end of the high-pressure cylinder, a sealing bush is arranged in the high-pressure cylinder, a plunger shaft is slidably arranged on the inner side of the sealing bush, and the lower end of the plunger shaft is connected with the power output end of the transmission structure. An annular lubricating gap is formed between the sealing bush and the plunger shaft; a drainage channel is arranged on the inner side of the plunger pump cover, and a one-way valve structure is arranged at the joint of a water inlet of the drainage channel and an inner cavity in the upper end of the high-pressure cylinder. Compared with a sealing ring, the sealing bush has higher strength and higher wear resistance, and is not easy to wear in the use process.

The invention discloses a digital hydraulic pump controlled by a high-speed switch valve bridge. The digital hydraulic pump comprises a motor, a swash plate type axial plunger pump, a variable adjusting unit, a pressure compensation unit, a closed-loop control unit, an unloading unit and a filter. The motor is connected with the swash plate type variable displacement piston pump; the variable adjusting unit is connected with the swash plate type variable plunger pump; the pressure compensation unit is connected with the variable adjusting unit to carry out differential pressure compensation on the variable adjusting unit; the closed-loop control unit is connected with the variable adjusting unit and controls the output flow of the variable adjusting unit according to a feedback signal; the high-speed switch valve is subjected to pressure difference compensation through the pressure difference compensator, so that the flow of the high-speed switch valve is not affected by load changes any more, and output pressure fluctuation of the swash plate type variable displacement piston pump is reduced; a high-speed switch valve bridge serves as a pilot level, and digital accurate control over the output pressure of the hydraulic pump is achieved through a closed-loop control unit; the high-speed switch valves are connected in parallel, multi-stage flow output and differential flow control are achieved, and the control precision and the response speed of the digital hydraulic pump are improved.

A power end frame of a reciprocating pump includes a first ring, a second ring, and a plurality of connections extending between the first ring and the second ring. The first ring, the second ring, and the plurality of connections are integral with one another, and the plurality of connections comprises a plurality of struts that form a plurality of open cells between the first ring and the second ring.

A hydrostatic axial piston machine is disclosed, in the housing of which a drive shaft is rotatably mounted about an axis of rotation. The housing comprises a pot-like housing part having a first abutment and a cover-like housing part having a second abutment. The two abutments are clamped against one another in a sealing manner. A first fitting pin is inserted precisely into a first fitting recess of the first abutment on the one hand and into a second fitting recess of the second abutment on the other hand. A second fitting pin is provided on a side opposite the axis of rotation, which is inserted precisely into a third fitting recess of the first abutment on the one hand and into a fourth fitting recess of the second abutment on the other hand. The second fitting recess has a radial widening relative to the axis of rotation, whereby the second fitting recess is a slotted hole and / or a fitting groove.

Hydrostatic radial piston rotation machine comprising: an internal element and an external element coaxial and mounted to rotate relative to each other about an axis of rotation, one of these elements being a rotor and the other of these elements being a stator; the internal element comprising a cylinder block (10); the external element comprising a cam track. The machine comprises a drainage circuit which comprises, for at least one cylinder (11), an injection duct (26) passing through the wall of the cylinder (11), the injection duct (26) opening at one of its ends into the cylinder (11) through a port (27), and opening at the other of its ends, from the cylinder block (10), into a drainage space supplied with hydraulic fluid. Figure for the abstract: Fig.2

A ball support arrangement for a piston shoe arrangement (1), wherein the piston shoe arrangement (1) is configured to be provided in an axial piston machine, wherein the piston shoe arrangement (1) includes a piston body (2) having a ball shaped end (3) and a piston shoe (4), wherein the ball shaped end (3) is provided in the piston shoe (4), wherein the ball support arrangement is arranged between the piston shoe (4) and the balls shaped end (3). The objective of the present invention is to provide a ball support arrangement, which is easy to replace and low on maintenance. This objective is solved by a ball support arrangement, which is separate and replaceable, wherein at least a ball portion (5) of the ball support arrangement is configured to accommodate at least part of the ball shaped end (3).

The present disclosure relates to a crosshead box and a plunger pump. The crosshead box is a substantially rectangular box formed by an integral forming manufacturing process. The crosshead box is provided with a plurality of crosshead inner cavities, and the plurality of crosshead inner cavities are arranged in the transverse direction of the crosshead box. The crosshead box is further provided with a plurality of gas discharging cavities, and each gas discharging cavity penetrates through the crosshead box in the longitudinal direction of the crosshead box and is communicated with the corresponding crosshead inner cavity. The plunger pump is provided with the crosshead box. According to the crosshead box and the plunger pump of the present disclosure, the service life is greatly prolonged by means of integral forming, and the gas pressure in the box can be kept balanced all the time during operation, thereby improving the operation stability of the device, and thus further prolonging the service life.

The utility model provides a scheme of a three-plunger digital displacement pump based on a dynamic coupling actuating valve, which comprises three groups of flow distribution units, and each group of flow distribution units comprises a reciprocating plunger and two high-speed switch valves. The plungers are connected to the crankshaft through the connecting rods, in the rotating process of the crankshaft, the 120-degree phase difference is kept between the plungers, electrical energy consumption and throttling loss in the control process can be reduced, and the multi-plunger digital displacement pump can be expanded in the crankshaft direction according to requirements. The valve element of the check cartridge valve structure is lighter, and the switch valve has higher rated flow. The topological structure of the coupling iron core can significantly improve the transient mechanical property of the dynamic coupling actuator, and significantly reduces the operation time of the switching valve. A dynamic sealing system is converted into a static sealing system through the thin film sealing structure, the situation that magnetorheological fluid leaks and pollutes a hydraulic oil way can be completely avoided, and the motion resistance of the system is reduced.