摘要:
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.
摘要:
The invention provides a metal bellows type accumulator having an outer shell provided in its one end with a pressure introducing passage in an opening manner, and a metal bellows repeatedly formed peak portions directed to an outer side in a radial direction and trough portions directed to an inner side, capable of expanding and contracting in an axial direction and separating an inner chamber of the outer shell into a pressure introducing chamber communicated with the pressure introducing passage and a gas chamber charged with cushion gas. A tubular portion is provided at a position where an amplitude of vibration in a radial direction becomes maximum in the metal bellows, has a greater diameter than a maximum diameter portion of each of the peak portions and is in contactable with an inner peripheral surface of the outer shell at a predetermined width in the axial direction.
摘要:
The invention relates to the field of physics—namely, to control systems and the pressure control of liquids and gases, in particular—to stabilizing devices operating at overloads, including hydraulic shocks. Technical result from use of the claimed invention is simplicity of the manufacturing process and assembly, easiness of operation and efficiency of quenching pulses. A method consists of the fact that at the section of said pipeline installed at least one pressure pulse stabilizer in the direction of movement of transferred medium from supplier to consumer. Pulse flow is directed as a first portion into the stabilizer, and after its first portion a second portion of the flow is directed, which after a delay is sent into additional input of the stabilizer. The potential sources of pressure pulses are preliminary revealed on the protected section of the pipeline. Then the place of installation of the stabilizer is defined based on condition—at a distance no further than 10 meters from the potential point source of pressure pulses and on condition—at a distance 100-1000 meters during preventive installation on the road, at least two stabilizers on the stage. Stabilizers are oriented on the pointer on its outer surface toward the potential point source of the pressure pulses and the arrows pointed in the same direction as the direction of flow of the transferred medium at the stages. Stabilizers have straight flow chamber for at least ⅓ less than largest vortex chamber, between the casing and shell—pressurized chamber connected via radial openings with straight flow chamber and the equalizing chamber, which connected via inclined holes with the vortex chamber. The diameter of the radial openings is 1.2-4 of the diameter of inclined holes. The angles α and β of inclined holes—in the range 0-45°. Pressure in the pressure and in the levering chambers is equalized by shifting the pistons by the springs to the original position. Different options are offered for killing of pressure pulse by different means, associated with variations in the design of elements of the stabilizer.
摘要:
A hydraulic accumulator including an energy storage apparatus with a first piston face configured to reversibly compress an energy storage medium and a second piston face forming at least part of an inner surface of a corresponding second fluid chamber reversibly expandable by movement of the second piston face. A third piston face forms at least part of an inner surface of a corresponding third fluid chamber reversibly expandable by the third piston face. The first, second and third piston faces are coupled together.
摘要:
A plunger pressure accumulator includes a shell; and a plunger which is adapted to move relative to the shell into an interior space of the shell. The interior space is divided into at least two subspaces, a first subspace of which is suppliable with hydraulic fluid of an external system and a second subspace which is provided with a pressurized gas. Between the plunger and the shell is arranged a slide element upon which the plunger is supported to move to a distance apart from an internal surface of the first subspace and from an internal surface of the second subspace. The plunger pressure accumulator is provided with at least one regenerator which is stationary relative to the shell or the plunger.
摘要:
A hydraulic servo-control of a servo-controlled gearbox comprises hydraulic actuators defining chambers, a storing tank containing control fluid used by the actuators at room pressure, a hydraulic accumulator containing control fluid under pressure, a motor pump drawing the fluid from the tank and feeding it under pressure to the accumulator, and solenoid valves selectively connecting the chambers to the tank and accumulator. The accumulator includes an outer housing defining an inner cylindrical surface defining a first diameter, a piston arranged and axially slidable and mobile inside the housing and defining there a first variable-volume chamber for a gas and second variable-volume chamber for the fluid under pressure, and a limit stopper arranged at an open end of the housing, acting as a striker for the piston, and having an annular circlip defining an opening and overall second diameter approximating by excess the first diameter of the surface of the housing.
摘要:
A method of shutting down a nuclear reactor may include compressing a scram gas that is in fluid communication with a scram accumulator. The scram accumulator defines a chamber therein and contains bellows within the chamber. The bellows are configured to hold a scram liquid in isolation of the scram gas. The scram gas exerts a compressive force on the bellows in a form of stored energy. The method may additionally include releasing the stored energy in response to a scram signal such that the scram gas expands into the chamber of the scram accumulator to compress the bellows and expel the scram liquid from the scram accumulator to insert control rods into a core of the nuclear reactor.
摘要:
A device for transferring a hydraulic working pressure in a pressure fluid for pressure actuating hydraulic units of deep sea systems, in particular deepwater wells, includes a first pressure chamber (19) for the pressure fluid, a displaceable piston arrangement (9, 11, 13) for changing the volume of the pressure chamber (19), and at least one second pressure chamber (21) in a cylinder arrangement (1). The surrounding pressure of the deep sea can be applied to the second pressure chamber for a displacement of the piston arrangement (9, 11, 13) generating the working pressure in the first pressure chamber (19). A pressure accumulator (37) is associated with the cylinder arrangement (1). The displaceable separating element (41) of the pressure accumulator separates a chamber (45) connected to the seawater from an actuating chamber (43) containing an actuating fluid and connected to the second pressure chamber (21) to apply the deep sea pressure to the second pressure chamber by the actuating fluid.
摘要:
A pressure accumulator comprises an accumulator housing (2) in which a movable separating element (30) fluid-tightly separates a gas chamber (16) filled with a working gas from a fluid chamber (28). The pressure accumulator is characterized in that a monitoring device (50, 54) is provided which supplies an optical signal in the event of a malfunction affecting the sealing effect of the separating element (30).
摘要:
The invention relates to a pressure accumulator comprising a membrane (4) which forms a movable separating element between media spaces (6, 8) and which is made of contiguous layers (16, 18, 20, 22, 24, 26) of different materials, said pressure accumulator being characterized in that at least one layer of a basic structure (16, 20) having filaments and provided with a gas-tight impregnation (24) is disposed between layers (18) made of an elastomer.