The Test and Evaluation of Flow Fuses for Use in Manned Pressure Chambers

Abstract

Manned pressure chambers used in sea or shore diving operations are subject to catastrophic depressurization from external piping failures. Recently, a device designed to permit bidirectional fluid flow while protecting 'flow out' lines has become available. This device, called a Flow Fuse, is essentially a flow sensitive check valve with the poppet spring-loaded open. Flow fuses were procured and evaluated using a test piping system to simulate line ruptures and sudden large increasing leaks; four fuse sizes were tested (1/ 4 in., 1/2 in., 1 in. and 2 in. line sizes). Data on closure flows, differential pressures, and closure speeds were analyzed. Rapid closure (10 - 100 milliseconds) occurred when flow attempted to exceed trip point settings. No failures occurred in 10,000 total actuations. All fuses have adjustable trip points, easy serviceability, and should provide excellent resistance to corrosive environments.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1973
Accession Number
AD0767930

Entities

People

  • Clifford R. Holland

Tags

Communities of Interest

  • C4I
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Flow Rate
  • Fluid Flow
  • Gas Flow
  • High Pressure
  • Hydrodynamics
  • Inspection
  • Life Cycles
  • Life Tests
  • Mass Flow
  • Materials
  • Measurement
  • Oscilloscopes
  • Piping Systems
  • Plastic Explosives
  • Test And Evaluation
  • Test Methods
  • Visual Inspection

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