FR2400157A1 - Fluid pipeline non-return valve damper - has cylindrical sliding guide piece supporting damper piston and with variable throttle openings - Google Patents

Fluid pipeline non-return valve damper - has cylindrical sliding guide piece supporting damper piston and with variable throttle openings

Info

Publication number
FR2400157A1
FR2400157A1 FR7823401A FR7823401A FR2400157A1 FR 2400157 A1 FR2400157 A1 FR 2400157A1 FR 7823401 A FR7823401 A FR 7823401A FR 7823401 A FR7823401 A FR 7823401A FR 2400157 A1 FR2400157 A1 FR 2400157A1
Authority
FR
France
Prior art keywords
guide piece
damper
piston
throttle openings
return valve
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.)
Withdrawn
Application number
FR7823401A
Other languages
French (fr)
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.)
Kraftwerk Union AG
Original Assignee
Kraftwerk Union AG
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 Kraftwerk Union AG filed Critical Kraftwerk Union AG
Publication of FR2400157A1 publication Critical patent/FR2400157A1/en
Withdrawn legal-status Critical Current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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
    • F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
    • 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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/04—Devices damping pulsations or vibrations in fluids
    • F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
    • F16L55/055—Valves therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The damper is for a non-return valve in a pipe handling fluid, having a plug moved by the fluid flow and bearing against a seat when shut. A damping piston engages positively with the plug shortly before this shuts, and is of hollow cylindrical section. At the ends (12, 13) of the piston (11) are cylindrical chambers, separated from the inner chamber through which the fluid flows by a hollow cylindrical guide piece (10), movable axially and supporting the piston. The variable cross-section throttle openings (16, 17) connecting the chambers together are formed in the guide piece. The axial position of these throttle openings can be such that when the damping piston is in the end position with the valve shut only part of the cross-section of openings (17) is in line with the respective chamber (15).
FR7823401A 1977-08-10 1978-08-08 Fluid pipeline non-return valve damper - has cylindrical sliding guide piece supporting damper piston and with variable throttle openings Withdrawn FR2400157A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772736080 DE2736080A1 (en) 1977-08-10 1977-08-10 CUSHIONING DEVICE FOR REFLECTIVE VALVES

Publications (1)

Publication Number Publication Date
FR2400157A1 true FR2400157A1 (en) 1979-03-09

Family

ID=6016085

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7823401A Withdrawn FR2400157A1 (en) 1977-08-10 1978-08-08 Fluid pipeline non-return valve damper - has cylindrical sliding guide piece supporting damper piston and with variable throttle openings

Country Status (2)

Country Link
DE (1) DE2736080A1 (en)
FR (1) FR2400157A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2595432A1 (en) * 1986-03-07 1987-09-11 Electricite De France NON-RETURN VALVE ASSEMBLY, PARTICULARLY FOR PRESSURIZED WATER REACTOR
EP0259854A2 (en) * 1986-09-12 1988-03-16 Bopp & Reuther Aktiengesellschaft Hydraulic shock absorber for pivoting check valves
EP1251279A3 (en) * 2001-04-16 2004-03-03 Stokes Vacuum Inc. Damped valve
CN103775687A (en) * 2014-01-28 2014-05-07 南通市红星空压机配件制造有限公司 Pressure check valve structure
WO2017001343A1 (en) * 2015-07-02 2017-01-05 3Eflow Ab A method and a liquid distribution system for saving liquid and thermal energy

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106523842B (en) * 2016-12-01 2019-04-09 深圳市燃气集团股份有限公司 A kind of spring damping device of reply pipeline pressure mutation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB618104A (en) * 1946-10-19 1949-02-16 Finney Presses Ltd Improvements in valves for hydraulic presses
DE1123874B (en) * 1956-06-28 1962-02-15 Zimmermann & Jansen Gmbh Check valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB618104A (en) * 1946-10-19 1949-02-16 Finney Presses Ltd Improvements in valves for hydraulic presses
DE1123874B (en) * 1956-06-28 1962-02-15 Zimmermann & Jansen Gmbh Check valve

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2595432A1 (en) * 1986-03-07 1987-09-11 Electricite De France NON-RETURN VALVE ASSEMBLY, PARTICULARLY FOR PRESSURIZED WATER REACTOR
EP0239451A1 (en) * 1986-03-07 1987-09-30 Electricite De France Check valve, especially for a pressurised-water reactor
US4756334A (en) * 1986-03-07 1988-07-12 Electricite De France Check-valve assembly, in particular for a pressurized water reactor
EP0259854A2 (en) * 1986-09-12 1988-03-16 Bopp & Reuther Aktiengesellschaft Hydraulic shock absorber for pivoting check valves
EP0259854A3 (en) * 1986-09-12 1988-12-28 Bopp & Reuther Gmbh Hydraulic shock absorber for pivoting check valves
EP1251279A3 (en) * 2001-04-16 2004-03-03 Stokes Vacuum Inc. Damped valve
CN103775687A (en) * 2014-01-28 2014-05-07 南通市红星空压机配件制造有限公司 Pressure check valve structure
CN103775687B (en) * 2014-01-28 2016-10-26 南通市红星空压机配件制造有限公司 A kind of pressure check valve structure
WO2017001343A1 (en) * 2015-07-02 2017-01-05 3Eflow Ab A method and a liquid distribution system for saving liquid and thermal energy
US10823431B2 (en) 2015-07-02 2020-11-03 3Eflow Ab Method and a liquid distribution system for saving liquid and thermal energy

Also Published As

Publication number Publication date
DE2736080A1 (en) 1979-02-15

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Legal Events

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ST Notification of lapse