LIQUID FLOW CONTROL DEVICES

• US 3,678,963 A
• Filed: 10/20/1970
• Issued: 07/25/1972
• Est. Priority Date: 10/22/1969
• Status: Expired due to Term

• Current Assignee: Alfred Edward Collinson, Colin Betts
• Original Assignee: Alfred Edward Collinson, Colin Betts
• Inventors: Collinson, Alfred Edward, Betts, Colin
• Primary Examiner(s): Bell, Jr., Houston S.
• Application Number:
  US05/082,416
• Time in Patent Office: 644 Days
• Field of Search: 138/37-46 137/625.3 251/282
• US Class Current: 138/41
• CPC Class Codes: F15D 1/0005 Baffle plates
• CPC Class Codes: G21C 15/02 Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices G21C19/04 takes precedence; coolant flow control through fuel assemblies, e.g. flow restrictors G21C3/322
• CPC Class Codes: Y02E 30/30 Nuclear fission reactors

Abstract

An adjustable, cavitation suppressing, flow impedance for use in liquid flow systems comprising a series of thin barriers spaced in the direction of flow, each barrier having an abundance of penetrations and being associated with means for altering the effective area each barrier presents to the liquid flow.

Claims

1. 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.

2. A flow impedance as claimed in claim 1 wherein said perforated material is wire mesh.

3. A flow impedance as claimed in claim 2 wherein said masking shutters each contain apertures that are complimentary to the apertures of said one set of plate members.