PRESSURE ACCUMULATOR

• US 20140311603A1
• Filed: 10/18/2012
• Published: 10/23/2014
• Est. Priority Date: 10/20/2011
• Status: Active Grant

• Current Assignee: Hydac Technology Gmbh (HYDAC International GmbH)
• Original Assignee: Hydac Technology Gmbh (HYDAC International GmbH)
• Inventors: Baltes, Herbert, Kloft, Peter
• Granted Patent: US 9,422,945 B2
• Time in Patent Office: Days
• US Class Current: 138/30
• CPC Class Codes: F15B 1/04 Accumulators
• CPC Class Codes: F15B 1/086 the gas cushion being entirely enclosed by the separating means, e.g. foam or gas-filled balls
• CPC Class Codes: F17C 1/00 Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge pressurised apparatus for purposes other than storage, see the relevant subclasses such as A62C, B05B; associated with vehicles, see the appropriate subclass of classes B60 - B64; pressure vessels in general F16J12/00 ; autoclaves B01J3/04; tank vehicles B60P3/22; railway tank wagons for carrying fluent materials B61D5/00; accumulators for supplying fluid under pressure F15B1/04; liquefied gas stoves F24C3/00

Abstract

The invention relates to a pressure accumulator which consists of at least one accumulator housing (403) with at least one connection (411) for a pressure medium (421), especially in the form of a fluid that can be accumulated in the accumulator housing (403), a filling material (419) that has hollow chambers or that forms at least one hollow chamber for accommodating at least part of said pressure medium (421) and/or at least one further pressure medium (449) being introduced into at least sections of the accumulator housing (403).

Claims

1. A pressure accumulator consisting of at least one accumulator housing (203, 303, 403) having at least one connection (211, 311, 411;

213, 313, 413) for a pressure medium (221, 321, 421), in particular in the form of fluid, which can be stored in the accumulator housing (203, 303, 403), wherein a filling material (219, 319, 419) can be introduced at least partially into the accumulator housing (203, 303, 403), said filling material having cavities or forming at least one cavity for at least partial accommodation of a pressure medium (221, 321, 421) and/or at least one additional pressure medium (249, 349, 449), characterized in that at least one elastomeric separation element (215, 315, 415), preferably in the form of a separation diaphragm (215, 315) or a separation bladder (415), subdivides the accumulator housing (203, 303, 403) into at least two working spaces (245, 345, 445, 247, 347, 447), forming a hydraulic accumulator, one of these working spaces (245, 345, 445) accommodating one pressure medium (221, 321, 421), in particular in the form of a liquid, and the other working space (247, 247, 447) accommodating the other pressure medium (249, 349, 449) in the form of a working gas such as nitrogen gas, and the filing material (219, 319, 419) is at least partially limited or enclosed by the separation element (215, 315, 415).

2. The pressure accumulator according to claim 1, characterized in that the filling material (219, 319, 419), with its cavities, is formed from a sintered material and/or from a cellular material such as a foam (metal foam, polyurethane foam), a gel or a woven or nonwoven textile or a comparable textile material.

3. The pressure accumulator according to claim 1, characterized in that the filling material (219, 319, 419) is elastically compressible.

4. The pressure accumulator according to claim 1, characterized in that the density of the filling material (219, 319, 419) varies within the pressure accumulator, in particular having a cluster or sandwich-type design.

5. The pressure accumulator according to claims 1, characterized in that the separation element (215, 315, 415) has the filling material (219, 319, 419) on one of its two sides, preferably the side adjacent to the additional pressure medium (249, 349, 449), in particular in the form of the working gas, and the filling material is at least partially in direct contact with the side of the separation element (215, 315, 415) in that regard.

6. The pressure accumulator according to claim 1, characterized in that the accumulator housing (203, 303) is in multiple parts, in particular in two parts;

the accumulator housing parts (205, 305;

207, 307), which are joined together, secure the separation element (215, 315) in the accumulator housing (203, 303), and the one accumulator housing part (203, 303) preferably has at least one connection (213, 313) for the additional pressure medium (249, 349), in particular in the form of the working gas

7. The pressure accumulator according to claim 6, characterized in that the accumulator housing parts (305, 307) can be connected to one another by a threaded connection (309), preferably using a union nut part.