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Remotely operated self-powered gas safety valve

  • US 6,994,309 B2
  • Filed: 06/28/2004
  • Issued: 02/07/2006
  • Est. Priority Date: 06/28/2004
  • Status: Expired due to Fees
First Claim
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1. An apparatus for the control and measurement of the flow of gas, comprising:

  • a) A rotary control valve;

    b) A planar base plate having a plurality of cavities to accept the different components of the apparatus;

    c) A direct current reversible non-sparking electronically commutated electric motor, said electric motor having gears to turn said rotary control valve;

    d) A position sensor to determine the position of said rotary control valve;

    e) A gas pressure sensor for measuring the gas flowing pressure and for the redundant check of the seating of said rotary control valve in fully closed position;

    f) An electric commutation switching and control circuit for said electric motor, wherein said control circuit turns electric motor on and off and reverses the rotary control valve'"'"'s rotation direction;

    g) A remote supervisory device;

    h) digital communications means for receiving external commands for opening and closing of said rotary control valve in response to an emergency or administrative action from the remote supervisory device;

    i) An embedded microprocessor based gas metering apparatus for the measurement of gas flow at standard conditions;

    j) An electric energy generating and storage system for the operation of the apparatus.

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