ES423849A1 - Control valve electro-plating - Google Patents

Control valve electro-plating

Info

Publication number
ES423849A1
ES423849A1 ES423849A ES423849A ES423849A1 ES 423849 A1 ES423849 A1 ES 423849A1 ES 423849 A ES423849 A ES 423849A ES 423849 A ES423849 A ES 423849A ES 423849 A1 ES423849 A1 ES 423849A1
Authority
ES
Spain
Prior art keywords
piston
valves
holes
opening
low 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.)
Expired
Application number
ES423849A
Other languages
Spanish (es)
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.)
Nuovo Pignone SpA
Original Assignee
Nuovo Pignone SpA
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 Nuovo Pignone SpA filed Critical Nuovo Pignone SpA
Publication of ES423849A1 publication Critical patent/ES423849A1/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
    • F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines
    • 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
    • F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Control Of Turbines (AREA)
  • Compressor (AREA)
  • Check Valves (AREA)

Abstract

Improvements in regulating valves, of the type that include a valve body and a balanced piston at any point of its stroke, characterized in that the hollow piston is provided with horizontal holes in the upper cylindrical closing portion and of vertical holes in its lower contour portion configured as the contoured pistons of angle valves with Venturi-type outlet, so that at the beginning of the opening the flow is regulated only by the number of open holes when the piston and fluid jets collide with each other inside the piston and are laminated through the vertical holes, thus being subjected to a high pressure drop, while in the second part of the opening it is obtained, due to the particular contour of the piston, a very high pressure recovery and, therefore, very low pressure drops, thus two or more valves with needs c Overlaps of high and low pressure drops and, therefore, of different characteristics and dimensions, can be replaced by this valve. (Machine-translation by Google Translate, not legally binding)
ES423849A 1973-02-23 1974-02-22 Control valve electro-plating Expired ES423849A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2074673A IT984196B (en) 1973-02-23 1973-02-23 REGULATING VALVE

Publications (1)

Publication Number Publication Date
ES423849A1 true ES423849A1 (en) 1976-10-16

Family

ID=11171444

Family Applications (1)

Application Number Title Priority Date Filing Date
ES423849A Expired ES423849A1 (en) 1973-02-23 1974-02-22 Control valve electro-plating

Country Status (6)

Country Link
CH (1) CH583871A5 (en)
DE (1) DE2408678C3 (en)
ES (1) ES423849A1 (en)
FR (1) FR2219349B1 (en)
GB (1) GB1422496A (en)
IT (1) IT984196B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2410217A1 (en) * 2010-07-20 2012-01-25 Siemens Aktiengesellschaft Valve for a steam turbine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB250861A (en) * 1925-11-18 1926-04-22 Pasquale Pascale Improvements in or relating to steam valves
CH423389A (en) * 1964-12-07 1966-10-31 Bbc Brown Boveri & Cie Relieved single-seat valve
DE1500251B2 (en) * 1965-11-02 1970-09-03
US3703273A (en) * 1970-08-24 1972-11-21 Kieley & Mueller Low loss innervalve assembly
US3665964A (en) * 1971-01-27 1972-05-30 Westinghouse Electric Corp Steam turbine control valve structure

Also Published As

Publication number Publication date
IT984196B (en) 1974-11-20
DE2408678B2 (en) 1977-10-13
FR2219349B1 (en) 1977-09-23
FR2219349A1 (en) 1974-09-20
DE2408678C3 (en) 1983-11-17
GB1422496A (en) 1976-01-28
CH583871A5 (en) 1977-01-14
DE2408678A1 (en) 1974-09-12

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