WPPressGaugeDetailHC.jpg
Contents
Summary
Description WPPressGaugeDetailHC.jpg |
English:
Mechanics of a pressure gauge, annotated
Annotated internals of a pressure gauge, contrast enhanced. Mechanical detailsStationary parts:A: Receiver block. This joins the inlet pipe to the fixed end of the Bourdon tube (1) and secures the chassies plate (B). The two holes receive screws that secure the case. B: Chassies Plate. The face card is attached to this on the opposite side. It contains bearing holes for the axles. C: Secondary Chassis Plate. It supports the outer ends of the axles. D: Posts to join and space the two chassis plates. Moving Parts1: Stationary end of Bourdon tube. This communicates with the inlet pipe through the receiver block. 2: Moving end of bourdon tube. This end is sealed. 3: Pivot and pivot pin. 4: Link joining pivot pin to lever (5) with pins to allow joint rotation. 5: Lever. This an extension of the sector gear (7). 6: Sector gear axle pin. 7: Sector gear. 8: Indicator needle axle. This has a spur gear that engages the sector gear (7) and extends through the face to drive the indicator needle. Due to the short distance between the lever arm link boss and the pivot pin and the difference between the effective radius of the sector gear and that of the spur gear, any motion of the bourden tube is greatly amplified. A small motion of the tube results in a large motion of the indicator needle. 9: Hair spring to preload the gear train to reduce gear lash and hysteresis . |
Date |
4 April 2004
|
Source | Transferred from en.wikipedia . |
Author | Leonard G. at en.wikipedia |
Licensing
Public domain Public domain false false |
This work has been released into the
public domain
by its author,
Leonard G.
, at the
English Wikipedia
project
. This applies worldwide.
In case this is not legally possible:
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Original upload log
- 2004-04-22 19:25 Leonard G. 504×495× (60279 bytes) Improved contrast annotated pressure gauge image
- 2004-04-22 19:17 Leonard G. 506×495× (70754 bytes) improved contrast image of pressure gauge internals
- 2004-04-04 16:53 Leonard G. 510×495× (53370 bytes) Mechanics of a pressure gauge, annotated