ISO 5596:1999 pdf download – Hydraulic fluid power — Gas-loaded accumulators with separator — Ranges of pressures and volumes and characteristic quantities

02-19-2022 comment

ISO 5596:1999 pdf download – Hydraulic fluid power — Gas-loaded accumulators with separator — Ranges of pressures and volumes and characteristic quantities.
1 Scope This International Standard specifies the characteristic performance quantities required for defining, designing, and testing gas-loaded accumulators with separator, which are used in hydraulic fluid power systems. It also defines ranges of pressures and volumes for these accumulators. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 3, Preferred numbers — Series of preferred numbers. ISO 5598, Fluid power systems and components — Vocabulary . 3 Terms and definitions For the purposes of this International Standard, the terms and definitions given in ISO 5598 and the following apply. 3.1 gas-loaded accumulator accumulator with separation in which the liquid is pressurized using the compressibility of an inert gas (nitrogen, for example). NOTE The separation is achieved by means of a bladder, diaphragm, piston, etc. 3.2 gas-loaded accumulator, transfer type gas-loaded accumulator with a port for additional gas capacity from one or more gas bottle(s) 3.3 compatible fluid fluid that has no significant effect on the nature or life of the parts of the accumulator, especially those made of elastomeric materials
4 Applications 4.1 Energy storage The gas-loaded accumulator stores hydraulic fluid under pressure during a period of low energy demand from the circuit in which it is mounted. The stored hydraulic fluid is then returned to the circuit to supplement or replace the pump discharge temporarily or to ensure emergency operation. 4.2 Pulse or surge damping The gas-loaded accumulator absorbs hydraulic fluid to reduce pressure peaks and returns hydraulic fluid to compensate for pressure drops. The accumulator thus reduces the amplitude of pressure oscillations in the circuit in which it is mounted. 4.3 Thermal compensation The gas-loaded accumulator absorbs volume changes resulting from changes in the temperature of the hydraulic fluid contained in an isolated part of the circuit. 5 Characteristic quantities The following quantities shall be used to define and design a gas-loaded accumulator.

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