Nozzle damper assembly

Patent · Tue Aug 10 04:00:00 EDT 1993

OSTI ID:6254584

Kozlak, M J; Anderson, D K

A nozzle damper assembly is described for installation in a duct operative for measuring and controlling the flow of a gaseous medium through the duct comprising: (a) enclosure means mountable in installed relation at a location along the length of the duct, said enclosure means including a damper body embodying four sidewalls with two of said four sidewalls extending in parallel relation to one another and in perpendicular relation to the other two of said four sidewalls; (b) shaft means supported for movement in said enclosure means; (c) damper blade means mounted on said shaft means for rotatable movement within said enclosure means; (d) damper blade operating means operatively connected to said damper blade means, said damper blade operating means including a lever arm, a connecting link, a lever, pneumatic cylinder means and initiating means, being operative to initiate operation of said pneumatic cylinder means and there through the rotation of said pair of shaft members so as to thereby cause said pair of damper blades to move in unison to and fro relative to each other; and (e) flow measurement means operative to measure the flow of the gaseous medium through the nozzle damper assembly such that control can be exercised over the flow of the gaseous medium through the damper assembly and thereby through the duct based on the measurements obtained through the operation of said flow measurement means, said flow measurement means including first pressure sensing equipment located upstream of said fixed ends of said pair of damper blades and second pressure sensing equipment located at the position occupied by said free ends of said pair of damper blades when said free ends of said pair of damper blades are in the second position thereof.

• Assignee: Combustion Engineering, Inc., Windsor, CT (United States)
• Patent Number(s): US 5234021; A
• Application Number: PPN: US 7-825347
• OSTI ID: 6254584
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
COMBUSTORS
CONTROL
CONTROL EQUIPMENT
DESIGN
DRAFT CONTROL SYSTEMS
DUCTS
EQUIPMENT
FLOW REGULATORS
FLOWMETERS
FLUID FLOW
GAS FLOW
MEASURING INSTRUMENTS
MECHANICAL STRUCTURES
METERS
MONITORING
MOTION
NOZZLES
OPERATION
PNEUMATIC CONTROLLERS
PRESSURE GAGES
ROTATION
SUPPORTS