Variable area type differential pressure flowmeter adopting variable area type differential pressure flow structure
A differential pressure flowmeter and variable area technology, applied in the field of variable area differential pressure flow structure and variable area differential pressure flowmeter, can solve the problems of not being completely solved, large permanent pressure loss, etc., to improve the range ratio High, easy to install, high precision effect
Inactive Publication Date: 2012-03-28
重庆威巴仪器有限责任公司
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Abstract
The invention discloses a variable area type differential pressure flowmeter adopting a variable area type differential pressure flow structure. The flow structure comprises a fixed sleeve, a channel which is used for connecting a fluid pipeline is arranged in the middle of the fixed sleeve, at least one blade of positioning wheel plate is stretched from an inner wall of the middle of the channelfrom the top down, a threaded rod coaxial with the channel is fixed on a hanging end of the positioning wheel plate, a throttling slip mass which slidably matched with the threaded rod in an coaxial manner is sheathed in the middle of the threaded rod, a compression spring is sheathed on the threaded rod between a rear end of the throttling slip mass and a limit step, the throttling slip mass comprises a section of a spindle structure, and a pressure tapping holeI and a pressure tapping holeII are respectively arranged on the fixed sleeve. Due to the adoption of the flowmeter, therefore, limitation that a traditional differential pressure type flowmeter has a fixedly invariant throttling area ratio and an invariant measurement range can be broken down, during measurement process, throttling area can be changed along with flow change, a meter signal (differential pressure) is in linear relationship with flow, measuring range altitude intercept can be greatly improved, and measurement requirements for different flow ranges can be met.
Application Domain
Volume/mass flow by differential pressure
Technology Topic
Linear relationshipEngineering +5
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