EP 2454507 A4 20140226 - SAFETY RUPTURE VALVE
Title (en)
SAFETY RUPTURE VALVE
Title (de)
SICHERHEITSREISSVENTIL
Title (fr)
VALVE DE RUPTURE DE SÉCURITÉ
Publication
Application
Priority
- SE 2010000169 W 20100617
- SE 0900832 A 20090618
Abstract (en)
[origin: WO2011021970A1] Safety rupture valve (1), such as hose break valve, for systems with pressurized fluid intended to be connected between at least one line (hose) (5) and a first hydraulic component (9) such as a hydraulic cylinder, with the intention of sensing breakage or leakage in the line (5) or system before the safety rupture valve (1). The hose rupture valve (1) includes a valve block (valve housing) (2) provided with at least one first port (3) to which the line (5) is connected and at least one second port (4) to which the hydraulic component (9) is connected, the first port (3) and the second port (4) are connected with each other via at least one flow channel. The flow channel's flow is controlled by at least one pilot controlled pressure valve (11) which is controlled by pressure in at least one pilot line (12). The safety rupture valve includes at least one check valve which permits flow from the first port (3) to the second port (4) past the pilot controlled pressure valve (11). The unique feature of the invention is that the pilot controlled pressure valve's (11) pilot line (12) connects to the first port (3) via a first channel (connection or similar) (13) and that it connects to the second port (4) via a second channel (connection or similar) (14) and the first channel (13) is provided with at least one first restrictor (15) and that the second channel (14) is provided with at least one second restrictor (16) and that the flow in channel (14) between port (4) and restriction (15) is controlled by at least one pilot controlled check valve (17).
IPC 8 full level
F15B 13/02 (2006.01); F15B 20/00 (2006.01); F16K 17/22 (2006.01); F16K 17/30 (2006.01); F16K 17/36 (2006.01)
CPC (source: EP SE)
F15B 13/023 (2013.01 - EP); F15B 20/005 (2013.01 - EP SE); F16K 17/22 (2013.01 - SE); F16K 17/30 (2013.01 - SE); F16K 17/36 (2013.01 - SE); F16L 55/1022 (2013.01 - SE); F15B 2211/50545 (2013.01 - EP)
Citation (search report)
- [A] JP H05196006 A 19930806 - HEILMEIER & WEINLEIN
- [A] DE 102005022275 A1 20060216 - BOSCH REXROTH AG [DE]
- [A] DE 102005018889 A1 20061116 - KNORR BREMSE SYSTEME [DE]
- [A] JP 2008039042 A 20080221 - HITACHI CONSTRUCTION MACHINERY
- [A] US 2007210645 A1 20070913 - DORNBACH DAVID A [US]
- [A] DE 60308034 T2 20070315 - OIL CONTROL SPA [IT]
- See references of WO 2011021970A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2011021970 A1 20110224; WO 2011021970 A8 20120119; EP 2454507 A1 20120523; EP 2454507 A4 20140226; SE 0900832 A1 20101219; SE 534272 C2 20110628
DOCDB simple family (application)
SE 2010000169 W 20100617; EP 10810252 A 20100617; SE 0900832 A 20090618