US3678963A - Liquid flow control devices - Google Patents

Liquid flow control devices Download PDF

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Publication number
US3678963A
US3678963A US82416A US3678963DA US3678963A US 3678963 A US3678963 A US 3678963A US 82416 A US82416 A US 82416A US 3678963D A US3678963D A US 3678963DA US 3678963 A US3678963 A US 3678963A
Authority
US
United States
Prior art keywords
plate members
flow
apertures
plates
liquid flow
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 - Lifetime
Application number
US82416A
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English (en)
Inventor
Colin Betts
Alfred Edward Collinson
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Application granted granted Critical
Publication of US3678963A publication Critical patent/US3678963A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/0005—Baffle plates
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
    • G21C15/02—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Definitions

  • This invention relates to liquid flow control devices and it is concerned with the problem of cavitation, especially cavitation arising from impedances inserted in fluid flow channels in order to regulate the pressure drop in said channels.
  • an axial flow, cavitation sup I pressing, flow impedance comprises a hollow body member and a stack of sets of first and second plate members alternately arranged in the stack, the stack being supported inside and co-axially with the body member with the first plate members fixed to the body member and the second plate members secured to a rotatable shaft so that the second plate members can be rotated together relative to the first plate members, the
  • FIG. I is a longitudinal sectional view of an adjustable flow impedance valve according to the invention.
  • FIG. 2 is a sectional view along the line 11-11 in FIG. 1.
  • a flow impedance valve 1 is shown in which a cylindrical pressure vessel 2 houses a series of fixed annular mesh plates 3.
  • the mesh plates 3 are equally spaced apart by their thickened rims 4 which contact the inner surface of the pressure vessel 2 and are secured to the rims 4 of adjacent plates 3 by screws 5.
  • the complete assembly of mesh plates 3 being secured in the pressure vessel 2 by screws 6 engaging the end mesh plate 3 with a shoulder 7 formed inside the pressure vessel 2.
  • Each mesh plate 3 comprises a backing plate 8 having 16 equally spaced flow ports 9 machined in it.
  • the flow ports 9 each accommodate a thin woven wire mesh window 10.
  • the wire mesh windows 10 being secured in position by being trapped between the backing plate 8 and an insert plate 11 that is welded into the backing plate 8 and is provided with ports matching the flow ports 9 in the backing plate 8.
  • each mesh plate 3 In front of each mesh plate 3, with respect to the direction plates 12.
  • the ends of the shaft 13 are sup orted within the end support members 14 and 15 by thrust an journal bearings
  • the shaft 13 is actuated by a rotatable spindle 19 being fitted with a rack 20 which engages in a pinion 21 on the end of the shaft 13, so that movement of the spindle 19 rotates the shaft 13 at a uniform velocity ratio.
  • the spindle 19 extends into a sealed housing 23 in the pressure vessel 2.
  • the sealed housing 20 prevents leakage of any liquid along the spindle 19.
  • rotation of the spindle 19 allows the masking plates 12 to occupy in one extreme a position in which their ports are in alignment with the wire mesh windows 10 in their associated mesh plates 3 to give the maximum presented flow area through the wire mesh windows 10 and in the'other extreme a position in which the masking plates 12 almost fully mask the wire mesh windows 10 to give a minimum presented flow area. Between these extremes a variety of precise presented flow areas are attainable. Thus the shaft 13 need only rotate over an area equivalent to the masking of the wire mesh windows 10.
  • Adjustment of the range of impedances offered by the valve 1 may be made by varying the spacing of the mesh plates 3 or by making it non-uniform along the length of the spindle 13.
  • the mesh or weave of the wire mesh windows 10 can be altered and the effective area and shape of the windows 10 and the ports in the masking plates 12 can also be varied.
  • the number of mesh plates 3 and associated masking plates 12 may also be altered.
  • the flow impedance valve 1 described above is suitable for use in liquid metal flows and in this context is of value to provide gags in the fuel channels associated with the core of a nuclear reactor operating in the fast neutron region and cooled by liquid sodium.
  • An axial flow, cavitation suppressing, flow impedance comprising a hollow body member and a stack of sets of first and second plate members alternately arranged in the stack, the stack being supported inside and co-axially with the body member with the first plate members fixed to the body member and the second plate members secured to a rotatable shaft so that the second plate members can be rotated together relative to the first plate members, the plates of one of the sets of plate members having apertures covered by abundantly perforated material for liquid flow devoid of cavitation creation, through the apertures, and the plates of the other set of plate members being in the form of masking shutters for the plate members having the apertures covered by perforated material.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Sliding Valves (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Details Of Valves (AREA)
US82416A 1969-10-22 1970-10-20 Liquid flow control devices Expired - Lifetime US3678963A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5187369 1969-10-22

Publications (1)

Publication Number Publication Date
US3678963A true US3678963A (en) 1972-07-25

Family

ID=10461723

Family Applications (1)

Application Number Title Priority Date Filing Date
US82416A Expired - Lifetime US3678963A (en) 1969-10-22 1970-10-20 Liquid flow control devices

Country Status (5)

Country Link
US (1) US3678963A (ja)
DE (1) DE2051611A1 (ja)
FR (1) FR2065744B1 (ja)
GB (1) GB1288258A (ja)
SE (1) SE365292B (ja)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142413A (en) * 1976-06-08 1979-03-06 N.V. Nederlandse Gasunie Device for improving the flow profile in a gas line
US4505877A (en) * 1981-02-26 1985-03-19 Commissariat A L'energie Atomique Device for regulating the flow of a fluid
US4858643A (en) * 1988-03-14 1989-08-22 Unit Instruments, Inc. Fluid flow stabilizing apparatus
US4894152A (en) * 1987-08-13 1990-01-16 Cerex Corporation Fluid control device
US5769122A (en) * 1997-02-04 1998-06-23 Fisher Controls International, Inc. Fluid pressure reduction device
US6026859A (en) * 1998-01-28 2000-02-22 Fisher Controls International, Inc. Fluid pressure reduction device with linear flow characteristic
US6095196A (en) * 1999-05-18 2000-08-01 Fisher Controls International, Inc. Tortuous path fluid pressure reduction device
US6244297B1 (en) 1999-03-23 2001-06-12 Fisher Controls International, Inc. Fluid pressure reduction device
US7802592B2 (en) 2006-04-18 2010-09-28 Fisher Controls International, Llc Fluid pressure reduction devices

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1510127A (en) * 1974-12-31 1978-05-10 Atomic Energy Authority Uk Nuclear reactor fuel element assemblies
GB1518292A (en) * 1975-05-07 1978-07-19 Atomic Energy Authority Uk Nuclear reactor fuel sub-assemblies
FR2552173B1 (fr) * 1983-09-19 1987-07-24 Inst Francais Du Petrole Dispositif de stabilisation d'un ecoulement polyphasique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US707318A (en) * 1902-04-14 1902-08-19 John L Geyer Pressure-reducer for gas or other pipes.
US1097977A (en) * 1913-04-22 1914-05-26 William James Carbureter throttle-valve.
US2473674A (en) * 1944-11-25 1949-06-21 Schutte & Koerting Co Nozzle
US3529628A (en) * 1968-05-10 1970-09-22 Samuel A Cummins Variable fluid restrictor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US707318A (en) * 1902-04-14 1902-08-19 John L Geyer Pressure-reducer for gas or other pipes.
US1097977A (en) * 1913-04-22 1914-05-26 William James Carbureter throttle-valve.
US2473674A (en) * 1944-11-25 1949-06-21 Schutte & Koerting Co Nozzle
US3529628A (en) * 1968-05-10 1970-09-22 Samuel A Cummins Variable fluid restrictor

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142413A (en) * 1976-06-08 1979-03-06 N.V. Nederlandse Gasunie Device for improving the flow profile in a gas line
US4505877A (en) * 1981-02-26 1985-03-19 Commissariat A L'energie Atomique Device for regulating the flow of a fluid
US4894152A (en) * 1987-08-13 1990-01-16 Cerex Corporation Fluid control device
US4858643A (en) * 1988-03-14 1989-08-22 Unit Instruments, Inc. Fluid flow stabilizing apparatus
US5769122A (en) * 1997-02-04 1998-06-23 Fisher Controls International, Inc. Fluid pressure reduction device
US5941281A (en) * 1997-02-04 1999-08-24 Fisher Controls International, Inc. Fluid pressure reduction device
US6026859A (en) * 1998-01-28 2000-02-22 Fisher Controls International, Inc. Fluid pressure reduction device with linear flow characteristic
US6244297B1 (en) 1999-03-23 2001-06-12 Fisher Controls International, Inc. Fluid pressure reduction device
US6095196A (en) * 1999-05-18 2000-08-01 Fisher Controls International, Inc. Tortuous path fluid pressure reduction device
US7802592B2 (en) 2006-04-18 2010-09-28 Fisher Controls International, Llc Fluid pressure reduction devices
US20100319799A1 (en) * 2006-04-18 2010-12-23 Mccarty Michael Wildie Fluid pressure reduction devices
US8033300B2 (en) 2006-04-18 2011-10-11 Fisher Controls International, Llc Fluid pressure reduction devices

Also Published As

Publication number Publication date
SE365292B (ja) 1974-03-18
DE2051611A1 (de) 1971-05-06
FR2065744B1 (ja) 1973-01-12
GB1288258A (ja) 1972-09-06
FR2065744A1 (ja) 1971-08-06

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