FR2397578A1 - Safety valve for hydraulic equipment - opens by=pass line under excessive pressure and is closed by sudden pressure drop - Google Patents

Safety valve for hydraulic equipment - opens by=pass line under excessive pressure and is closed by sudden pressure drop

Info

Publication number
FR2397578A1
FR2397578A1 FR7722479A FR7722479A FR2397578A1 FR 2397578 A1 FR2397578 A1 FR 2397578A1 FR 7722479 A FR7722479 A FR 7722479A FR 7722479 A FR7722479 A FR 7722479A FR 2397578 A1 FR2397578 A1 FR 2397578A1
Authority
FR
France
Prior art keywords
safety valve
hydraulic equipment
opens
closed
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7722479A
Other languages
French (fr)
Other versions
FR2397578B3 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAUDET ALAIN
Original Assignee
BAUDET ALAIN
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BAUDET ALAIN filed Critical BAUDET ALAIN
Priority to FR7722479A priority Critical patent/FR2397578A1/en
Publication of FR2397578A1 publication Critical patent/FR2397578A1/en
Application granted granted Critical
Publication of FR2397578B3 publication Critical patent/FR2397578B3/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
    • F16K3/262—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member with a transverse bore in the valve member
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/24—Safety devices, e.g. for preventing overload
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Safety Valves (AREA)

Abstract

A safety valve for hydraulic equipment has a cylindrical body (2) with an inlet (4) and an outlet (3). A piston (1) inside the body (2) is acted on by two compression springs (8, 9). Under normal working pressure the spring force is balanced by the pressure so that the fluid can flow past the neck (5) of the piston (1). Under excessive pressure the piston (1) is pushed to the left so that the fluid can flow through the groove (10) and out through the orifice (13). In the event of a sudden drop in pressure the springs (8, 9) push the piston to the right to close the valve.
FR7722479A 1977-07-13 1977-07-13 Safety valve for hydraulic equipment - opens by=pass line under excessive pressure and is closed by sudden pressure drop Granted FR2397578A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7722479A FR2397578A1 (en) 1977-07-13 1977-07-13 Safety valve for hydraulic equipment - opens by=pass line under excessive pressure and is closed by sudden pressure drop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7722479A FR2397578A1 (en) 1977-07-13 1977-07-13 Safety valve for hydraulic equipment - opens by=pass line under excessive pressure and is closed by sudden pressure drop

Publications (2)

Publication Number Publication Date
FR2397578A1 true FR2397578A1 (en) 1979-02-09
FR2397578B3 FR2397578B3 (en) 1980-07-11

Family

ID=9193641

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7722479A Granted FR2397578A1 (en) 1977-07-13 1977-07-13 Safety valve for hydraulic equipment - opens by=pass line under excessive pressure and is closed by sudden pressure drop

Country Status (1)

Country Link
FR (1) FR2397578A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4273151A (en) * 1979-10-04 1981-06-16 The Perlick Company, Inc. In-line relief valve
EP0404271A1 (en) * 1989-06-22 1990-12-27 Johannes Nijhuis Hose breakage safety system
FR2700983A1 (en) * 1993-02-03 1994-08-05 Aerospatiale Device for distributing lubricant to a machine tool and method for lubricating a tool
EP0934804A2 (en) * 1998-01-30 1999-08-11 Krupp Berco Bautechnik GmbH Fluid driven percussion device
WO2004109166A1 (en) 2003-06-04 2004-12-16 Eaton Fluid Power Gmbh Pressure-dependent check valve and hydraulic system equipped therewith
CN103836220A (en) * 2014-02-18 2014-06-04 潘健 Self-sealing slide valve
CN105640147A (en) * 2012-11-06 2016-06-08 耿云花 Water bed high in sealing performance

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4273151A (en) * 1979-10-04 1981-06-16 The Perlick Company, Inc. In-line relief valve
EP0404271A1 (en) * 1989-06-22 1990-12-27 Johannes Nijhuis Hose breakage safety system
FR2700983A1 (en) * 1993-02-03 1994-08-05 Aerospatiale Device for distributing lubricant to a machine tool and method for lubricating a tool
EP0934804A2 (en) * 1998-01-30 1999-08-11 Krupp Berco Bautechnik GmbH Fluid driven percussion device
EP0934804A3 (en) * 1998-01-30 2003-03-05 Atlas Copco Construction Tools GmbH Fluid driven percussion device
WO2004109166A1 (en) 2003-06-04 2004-12-16 Eaton Fluid Power Gmbh Pressure-dependent check valve and hydraulic system equipped therewith
JP2006526743A (en) * 2003-06-04 2006-11-24 イートン フルイド パワー ゲーエムベーハー Pressure responsive check valve and hydraulic system including the valve
CN1330900C (en) * 2003-06-04 2007-08-08 伊顿流体动力有限公司 Pressure-dependent check valve and hydraulic system equipped therewith
US7617841B2 (en) 2003-06-04 2009-11-17 Eaton Fluid Power Gmbh Pressure-dependent check valve and hydraulic system equipped therewith
CN105640147A (en) * 2012-11-06 2016-06-08 耿云花 Water bed high in sealing performance
CN103836220A (en) * 2014-02-18 2014-06-04 潘健 Self-sealing slide valve

Also Published As

Publication number Publication date
FR2397578B3 (en) 1980-07-11

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Legal Events

Date Code Title Description
CA Change of address
ST Notification of lapse
AR Application made for restoration
BR Restoration of rights