267results about "Actuator accumulators" patented technology

An IFP is disclosed. The IFP includes a sealing channel formed axially about an outer diameter (OD), the sealing channel including at least two walls where the at least two walls of the sealing channel having a smaller OD than an inner diameter (ID) of a chamber and a channel is formed between the at least two walls. The IFP also includes an anti-tipping feature fixedly coupled with at least a portion of one wall of the sealing channel, the anti-tipping feature increasing a length of the IFP.

An accumulator includes: an exterior body including a bottom, a shell and a port; and a bellows provided inside the exterior body and having an S-shape being capable of expansion and contraction. In a case where the bellows has expanded maximally in the accumulator, the bellows has expanded from a free state where no load other than gravitational force is being applied to the bellows.

An auxiliary hydraulic system including an accumulator, a control valve, and a hydraulic connector. The accumulator connects to a primary hydraulic system including a hydraulic pump, a brake circuit, and a steering circuit. The control valve selectively allows or prevents flow from an accumulator to at least one of the brake circuit and the steering circuit. The hydraulic connector selectively connects an external source to the accumulator and the control valve.

The disclosure relates to an hydraulic accumulator, in particular a diaphragm accumulator, having an accumulator housing and a separating element disposed therein, which separates two media spaces from each other, wherein a weld seam is formed by a laser or electron beam welding process without any filler materials, in that at least a part of the wall parts delimiting the transition point are melted to form the weld seam, which closes off the transition point towards the surroundings, in a manner that is free of protrusions with respect to an outer circumferential surface of a connection element.

The invention relates to a hydraulic system energy accumulator and an energy accumulator pressure detection method, and belongs to the technical field of aviation equipment vibration isolation installation. The energy accumulator comprises an energy accumulation cavity, a spring, an indicating rod and an energy accumulator piston; the energy storage cavity is provided with a storage end and a pressure end, and the storage end is connected with a hydraulic system communicating pipe; the indicating rod and the spring are arranged at the pressure end, the indicating rod is connected with the energy accumulator piston and moves along with the energy accumulator piston, and the pressure of the hydraulic system can be detected by detecting the position of the indicating rod; and the spring is sleeved on the indicating rod and is used for pressing the energy accumulator piston so as to compensate the pressure of the hydraulic system. According to the technical scheme, the pressure of the hydraulic system can be detected.

The invention discloses a modular hydraulic energy recovery device and a recovery method thereof, and relates to the technical field of hydraulic energy recovery. A high-pressure pipeline of a hydraulic system is connected with the three functional modules in parallel through a multi-way pipe fitting, and a modular energy recovery system is formed. The high-pressure module adopts the combination of a leather bag type energy accumulator and a throttle valve, energy absorption is carried out aiming at the working conditions of high system pressure and slow change, and the pressure is stably released by utilizing the elastic energy storage characteristic of the energy accumulator; the high-frequency module is provided with a diaphragm type energy accumulator which is high in response speed, and instantaneous pressure fluctuation is rapidly restrained by dynamically adjusting the opening degree of a throttling valve; the power generation module drives a power generator through a hydraulic motor, and transforms the over-limit energy stored by the energy accumulator into electric energy for storage. The main control module monitors the system pressure and the change rate thereof in real time, dynamically switches the working states of the modules according to preset logic, and introduces a machine learning algorithm to optimize a threshold decision, so that the system adapts to complex working conditions.

The disclosure relates to a piston accumulator comprising an accumulator housing and a separator piston which is longitudinally moveably arranged therein and separates two media chambers from one another within the accumulator housing, wherein the accumulator housing is elastically formed in a sandwich-type structure from individual, partially differing layers in such a way that, with the influence of at least one external force, it allows for a curvature as a whole, starting from a starting state, and it returns to the starting state with the removal of the respective force.

The invention discloses a sliding nozzle hydraulic control system and method.The method comprises the steps that the system comprises an oil inlet pipeline, an oil return pipeline, a working energy storage device, an accident energy storage device, an accident closing device, a high-speed switching device, a low-speed switching device and a pressure releasing device, and the oil inlet pipeline is used for providing hydraulic oil for the system; the oil return pipeline is used for recovering hydraulic oil in the system; the working energy storage device is used for absorbing hydraulic impact and hydraulic fluctuation in the system; the accident energy storage device is used for storing hydraulic energy and providing the hydraulic energy for the hydraulic cylinder which urgently closes the sliding nozzle; the accident closing device is used for urgently closing the hydraulic cylinder, and the quick switching device is used for controlling quick opening and quick closing of the hydraulic cylinder. The low-speed switch device is used for controlling low-speed opening and low-speed closing of the hydraulic cylinder; and the pressure release device is used for releasing pressure in the hydraulic cylinder. Through the technical scheme provided by the invention, the safety of hydraulic control of the sliding gate nozzle can be improved.

An IFP is disclosed. The IFP includes a sealing channel formed axially about an outer diameter (OD), the sealing channel including at least two walls where the at least two walls of the sealing channel having a smaller OD than an inner diameter (ID) of a chamber and a channel is formed between the at least two walls. The IFP also includes an anti-tipping feature fixedly coupled with at least a portion of one wall of the sealing channel, the anti-tipping feature increasing a length of the IFP.

1. Method 2. The invention relates to a method for producing at least one part of an accumulator housing (10) for a hydraulic accumulator, said method having the following method steps: - providing accumulator housing parts (12, 14) which are to be connected to one another along mutually adjacent end sides (16, 18), of which at least one end side (16) has a material accumulation (20); - moving the adjacent accumulator housing parts (12, 14) together in such a way that the material accumulation (20) comes into contact with the adjacent end side (18); and simultaneously or subsequently - melting the material accumulation (20) by means of a welding process, and further moving the two accumulator housing parts (12, 14) together during the welding process with a predefinable pressing force; and simultaneously - forming a weld seam running along a connecting point (42) between the accumulator housing parts.

A medicament preparation system includes a water purification module and a medicament proportioning module that is interoperable with a replaceable fluid circuit. The fluid circuit includes a purified water inlet, a product medicament outlet, and a plurality of pumping tube segments. At least a first concentrate container is connected by at least a portion of the fluid circuit to the product medicament output and a first concentration measurement sensor station is positioned in a flow path. A controller is programmed to calculate iteratively a concentration of a first concentrate from the first concentrate container and the purified water from a signal generated by the first concentration measurement sensor station and to regulate one or both of a first pumping actuator engaged with the first pumping tube segment and a second pumping actuator engaged with the second pumping tube segment, responsively to the concentration of the first concentrate and water.

The utility model relates to a piston type energy accumulator which is provided with an energy accumulator shell (10), a separating piston (12) can be guided in the energy accumulator shell in a longitudinal displacement mode, the piston type energy accumulator is provided with a damping piston (18) with a check valve (20), and the damping piston can move into a fluid connector (24) in the energy accumulator shell under the condition that a throttling gap (22) is formed. The throttle gap is a cylindrical annular space which is formed by adjacent walls (28, 32) of the energy store housing and the damping piston, and the check valve has a valve ball (36) which is loaded by the energy store, a damping valve (68) which, in the closed position thereof, blocks a fluid path between the fluid connection and a piston fluid chamber (38) located between the separating piston and the accumulator housing and, in the open position thereof, releases the fluid path, the damping valve (68) being located in the region of an internal thread (26) of the fluid connection and having a longitudinally displaceable valve plate (70), an orifice (72) is introduced into the valve plate coaxially to a longitudinal axis (60) of the piston accumulator.

The disclosure relates to a piston accumulator comprising an accumulator housing and a separator piston which is longitudinally moveably guided therein and separates two media chambers from one another inside the accumulator housing, in particular separating a media chamber with a working gas from another media chamber with a fluid, such as hydraulic oil, wherein the separator piston has two piston parts which are formed as discs with the same outer diameter and which are securely connected to one another and held at a distance from one another via an elastically flexible piston rod, which, with the influence of at least one external force, allows for a curvature as a whole, starting from a starting state, and returns to the starting state with the removal of the respective force.

The mechanism in the invention provides a solution for automated, remote regulating high pressure air in the industrial air tube system. With double layer electromagnetic valves, the mechanism assure the comfortable and safe working platform for humans and equipment. The mechanism comprises: mechanical valve, 20 L pneumatic tank, pressure gauge, sealed metal box, static disc, electromagnetic relay with movable stem, capacitor, low pressure air tube, high pressure air tube, electrical wire, electromagnetic relay.

The disclosure relates to a piston accumulator having an accumulator housing in which a separating piston is longitudinally movably guided which separates two fluid chambers, in particular separates a fluid chamber having a working gas from a further fluid chamber having an operating fluid, such as hydraulic oil, and which separating piston has a damping device, wherein, in addition to the damping device, an inflow device is provided which interacts with the damping device for damping a fluid flow out of the accumulator housing by forming a throttle along a fluid path and which releases a further fluid path by bypassing the other fluid path that has the throttle in order for fluid to flow into the accumulator housing.

The invention relates to the technical field of hydraulic control, and discloses a loading oil cylinder hydraulic system of a loading vehicle, which comprises a motor pump set, a loading oil cylinder, an oil cylinder upper cavity energy accumulator set and an oil cylinder lower cavity energy accumulator set. The device is characterized in that a rodless cavity of the loading oil cylinder is communicated with the oil cylinder upper cavity energy accumulator group through an oil cylinder upper cavity loading pipeline; a rod cavity of the loading oil cylinder is communicated with the oil cylinder lower cavity energy accumulator set through an oil cylinder lower cavity loading pipeline. Under the dynamic working condition, the volume change of the two working cavities caused by the displacement of the loading oil cylinder piston is absorbed or compensated by the oil cylinder upper cavity energy accumulator group and the oil cylinder lower cavity energy accumulator group which are communicated with the loading oil cylinder piston, so that the fluctuation of the pressure in the two cavities is inhibited, and the stability of the output loading force is maintained. According to the invention, the stability of dynamic loading force when the loading vehicle runs on an uneven road surface can be obviously improved, and the accuracy of dynamic loading test is ensured.

The invention relates to the technical field of compressor lubricating oil station energy accumulators, in particular to an energy accumulator liquid level automatic adjusting system which can achieve automatic oil filling and nitrogen filling and improve the filling efficiency and the system operation stability, an energy accumulator is connected with a liquid level transmitter, and the liquid level transmitter, an oil supply switch valve and a nitrogen filling switch valve are all connected with a distributed control system. When the liquid level in the energy accumulator is low to the first liquid level, the distributed control system transmits a signal to close the oil supply switch valve, and the oil pump injects oil to the energy accumulator through an opening in the oil supply perforated check valve and the oil filling check valve; when the liquid level in the energy accumulator reaches the second liquid level, the oil supply switch valve is opened to enter an oil supply waiting state, and at the moment, the oil pump still injects oil into the energy accumulator until the liquid level reaches the third liquid level; when the liquid level in the energy accumulator reaches a third liquid level, the nitrogen charging switch valve is kept in a closed state, and at the moment, an oil-gas balance state is achieved; and when the liquid level in the energy accumulator reaches the fourth liquid level, the nitrogen charging switch valve is opened to charge nitrogen.

Systems and methods for creating a pressure pulse within a pipeline are disclosed. The method includes isolating a barrel of a pipeline inspection gauge (PIG) station from the pipeline, pressurizing the barrel up to a selected pressure, and opening an isolation valve between the barrel and the pipeline, thereby creating the pressure pulse.

An agricultural machine comprises a tool-holder chassis (200), at least one inter-row unit (100), and a hydraulic system (600) comprising a delivery line (301) suitable for being connected to a primary pump (P) to feed pressurized oil to a hydraulic actuator (103) of the inter-row unit and a return line (302) connected to a reservoir (303); the hydraulic system (600) comprises a divider-distributor (6) arranged in the delivery line (301) and having a primary outlet (60) connected to the hydraulic actuator (103) of the inter-row unit (100) and a plurality of secondary outlets (61) connected to the services of the tool-holder chassis (200); a distributor (4) is arranged in the primary outlet (60) of the divider-distributor (6) and has a first outlet (41) connected to the hydraulic actuator (103) of the inter-row unit and a second outlet (42) connected to the return line (302) leading to the reservoir (303); the hydraulic system (600) being configured so that the distributor (4) can be constantly crossed by pressurized oil from the divider-distributor (6).

An accumulator cover for an accumulator for an anti-lock brake system includes a porous body part that closes one open side of a cylindrical space of the accumulator and includes a plurality of micropores through which gas passes, wherein a piston is installed to be reciprocally movable in the cylindrical space. The accumulator cover also includes a body coupling part connected to the porous body part and coupled to a body of the accumulator in which the cylindrical space is disposed. A method for manufacturing the accumulator cover is also provided.

The invention relates to a hydraulic accumulator, in particular in the form of a piston accumulator, comprising a separation element (10), which is arranged in an accumulator housing (14) and separates two fluid chambers (16, 18) in a fluid-tight manner, in particular a closed-off storage chamber (20) containing a working gas, from a liquid chamber (22) containing an operating liquid, such as hydraulic oil, a fluid connection (24) being connected in a fluid-conducting manner to one of the fluid chambers (18), characterised in that a magnetic-field-generating device (42) is received in a part of the accumulator housing (14) which comprises the fluid connection (24), in such a way that magnetisable particles can be separated, in a cleaning manner, from the fluid located between the part of the storage housing (14) and the separation element (10) and deposited in the direction of the magnetic-field-generating device (42), on the latter.

1. Method 2. The invention relates to a method for producing at least one part of a hydraulic accumulator, said method having at least the following method steps: - providing an accumulator housing part (20) that has at least one fluid connection point (28), - providing a connection element (30) with a fluid passage (60) that has a material agglomeration (64) on its one free end face, - placing the material agglomeration (64) against the accumulator housing part (20) such that the fluid connection (28) in the accumulator housing part (20) comes into fluidic connection with the fluid passage (60) of the connection element (30), - melting the material agglomeration (64) by means of a welding method, - joining the connection element (30) and accumulator housing part (20) under a predefinable pressing force and a predefinable path and - allowing the resulting weld connection to cool.

The invention relates to a hydraulic accumulator, in particular a diaphragm accumulator, comprising an accumulator housing (10) and a separating element (12) which is arranged therein and separates two media chambers (14, 16) from each other. The accumulator housing (10) has at least one fluid connection point (24, 26) which opens into an adjacent media chamber (14, 16) and has a connection body (28, 82) with a fluid passage point (80, 98) that is connected to the accumulator housing (10) via a welding seam (40). The invention is characterized in that the connection body (28, 82) has an annular outer circumferential surface (72, 96) on the connection region facing the accumulator housing (10), and when the end face of the connection body is placed on the accumulator housing (10), the connection body (28, 82) forms a transition point (120), along which the welding seam (40) runs.

Safety device for protecting mobile work equipment which is exposed to mechanical stress during work processes against overload, comprising a piston-cylinder unit (10) which interacts with the respective work equipment and a hydropneumatic pressure accumulator which is connected to the piston-cylinder unit (10) in a fluid-conducting manner, characterized in that - the piston-cylinder unit (10) has at least two separate fluid chambers (16, 18), - the pressure accumulator has at least two further liquid chambers (20, 22) separated from one another and at least one energy storage chamber, in particular a gas chamber (24), separated therefrom, and - the respective fluid chamber (16, 18) of the piston-cylinder unit (10) is fluid-conductingly connected to the respective assignable further fluid chamber (20, 22) of the pressure accumulator.

A flow-through folding membrane accumulator comprises a hollow cylindrical housing and a folding flexible membrane disposed in an interior volume of the housing. The membrane defines an interior liquid channel extending through the membrane along a longitudinal axis, and liquid coolant flows from an inlet of the accumulator through the interior liquid channel to an outlet of the accumulator. The membrane is sealed to the housing such that an air-tight cavity filled with a gas is formed between the housing and the membrane. The cavity radially surrounds the internal liquid channel, with the membrane separating the cavity and the internal liquid channel. Volumes of the cavity and channel change in response to deformation of the membrane and based on pressures of the liquid coolant. The membrane may comprise multiple folds extending parallel to the longitudinal axis and distributed circumferentially around the axis.

An ECU is configured to determine the life of a pressure storage tank. The pressure storage tank has a gas chamber filled with gas, an oil chamber connected to a common passageway, and a piston dividing the gas chamber and the oil chamber. The pressure storage tank is configured to store hydraulic oil in the oil chamber and to release the hydraulic oil from the oil chamber. The ECU calculates a movement amount of the piston based on the volume change of the gas chamber. The ECU determines that the life of the pressure storage tank has ended when an integrated value of the calculated movement amount exceeds a threshold value.

An accumulator assembly is interposed hydraulically between a source of pressurized fluid and at least one wheel brake of a corresponding first or second pair of wheels. The accumulator assembly includes a medium pressure accumulator, a nonpowered MPA fill valve interposed fluidically between a pump-side passage of the medium pressure accumulator and the source of pressurized hydraulic fluid, a powered MPA one-way valve interposed fluidically between a brake-side passage of the medium pressure accumulator and the at least one corresponding wheel brake, and an MPA check valve interposed fluidically between the brake-side passage of the MPA cavity and the at least one corresponding wheel brake. An electronic control unit is provided for controlling at least one of the secondary brake module and the master cylinder responsive to at least one braking signal. The accumulator assembly facilitates a non-powered evac / fill phase of lifetime operation of the brake system.

To further improve a pressure accumulator of a liquid pressure assembly of a vehicle brake device, especially improve the behavior of a pressure accumulator at a cut-off border portion of a medium between a fluid chamber and an accumulation chamber.SOLUTION: In a pressure accumulator (34) of a liquid pressure assembly of a vehicle brake device equipped with a piston (44) and a packing sealing the piston (44) with respect to a piston guide (42), the packing is configured to include an elastomer ring (64) held by the piston (44). A layer ring (66) is provided, which is held by the piston (44) and is pressed against the piston guide (42) by the elastomer ring (64).SELECTED DRAWING: Figure 4

A work machine includes a first hydraulic circuit, a second hydraulic circuit, a single electric motor, and a controller. The first hydraulic circuit includes a first pump and a first valve. The first pump is configured to drive a first group of hydraulic accessories. The second hydraulic circuit includes a second pump and a variable pressure valve. The second pump is configured to drive a second group of hydraulic accessories. The single electric motor is connected / configured to drive the first pump and the second pump. The controller configured to estimate a torque of the second pump, estimate a total torque of the motor as a sum of a current operating torque of the motor and the estimate of the torque of the second pump, and, on condition the total torque of the motor is greater than a threshold torque, lower an operating torque of at least one of the first pump or the second pump.

The present invention discloses a hydraulic energy-saving device for the lifting circuit of a heating furnace. The beneficial effects of the present invention are as follows: the gravitational potential energy of the load is recovered by a plunger accumulator and reused, and the energy-saving effect is very obvious. Since the general design of the oil cylinder in a heating furnace system is that the rodless cavity is filled with oil for rising and the rod cavity is filled with oil for falling, the power system only needs to provide flow and pressure for the oil cylinder when it is falling. Since the area of the rod cavity of the oil cylinder is small, the required flow is relatively small, which greatly reduces the power configuration of the system, can reduce the capacity design of the system, and achieves a good energy-saving effect. In addition, by setting up an electric control device, it is possible to monitor the air pressure, oil pressure of the plunger accumulator and the working conditions of the oil cylinder in real time, and realize functions such as automatic refueling, oil replenishment, air pressure monitoring and alarm.