JPH02131623U

JPH02131623U -

Info

Publication number: JPH02131623U
Application number: JP4014589U
Authority: JP
Priority date: 1989-04-05
Filing date: 1989-04-05
Publication date: 1990-11-01
Anticipated expiration: 2004-04-05
Also published as: JPH0622172Y2

Description

[Brief explanation of drawings]

第１図は、本考案の渦検出器の構造を示す図で
、ａ図はｂ図のＡ−Ａ線断面図、ｂ図はａ図のＢ
−Ｂ線断面図、第２図は、電極板の他の実施例を
示す図、第３図は、従来の渦検出器と該渦検出器
の装着例を示す図、第４図は、従来の圧電センサ
を示す図である。１，１０１……母材、１ａ……切欠部、１ｂ…
…突起、１ｃ……割溝、２，３……圧電素子、４
，５……電極板、１０……本体、１１……渦発生
体、１２１ｄ……嵌挿孔、１４……ビス。 Figure 1 is a diagram showing the structure of the vortex detector of the present invention.
-B sectional view, FIG. 2 is a diagram showing another embodiment of the electrode plate, FIG. 3 is a diagram showing a conventional vortex detector and an example of mounting the vortex detector, and FIG. 4 is a diagram showing a conventional vortex detector. It is a figure showing a piezoelectric sensor of. 1,101... Base material, 1a... Notch, 1b...
...Protrusion, 1c...Groove, 2, 3...Piezoelectric element, 4
, 5... Electrode plate, 10... Main body, 11... Vortex generator, 121d... Fitting hole, 14... Screw.

Claims

[Claims for Utility Model Registration] 1. A void chamber is bored from one end of a vortex generator with both ends fixed at an axially symmetrical position within the body of the vortex flowmeter toward the center, and pressure is introduced through the outer wall of the void chamber. This is a detector that detects vortices in response to the fluctuating vortex pressure introduced through the hole.
The detector is inserted into the cavity without contact and is a sealed cylindrical body with one end open to the outside of the fluid, and is attached to the main body or the vortex generator in a cantilevered manner, and a vibrating tube that can be attached to and detached from the vibrating tube. 1. A vortex detector comprising a vertically elongated piezoelectric sensor, one end of which can be fitted and the other end fixed to a vibrating tube by means of fixing means. 2. The piezoelectric sensor includes a base material made of strip-shaped metal with one electrode provided at the end thereof, a piezoelectric element of the same shape affixed to both surfaces of the base material, and a piezoelectric element affixed to the other surface of the piezoelectric element mutually. It consists of an electrode plate to which another electrode is fixed by short-circuiting, and the adhesive is made by applying gold paste to the adhesion surface and firing it, and is characterized by having a large number of pores bored in the other electrode plate. A vortex detector according to claim 1. 3. One end of the piezoelectric sensor base material is extended from the piezoelectric element, a protrusion is provided on the outer periphery of the extended portion, a groove is provided in the axial direction, and the extended portion is fixed to an insertion hole drilled in the bottom of the cylindrical body of the vibrating tube. The vortex detector according to claim 1 or 2, characterized in that: 4. Claim No. 4, characterized in that a fixing auxiliary plate is welded to the non-adhesive surface of the piezoelectric element near the electrode at the other end of the piezoelectric sensor base material, and the piezoelectric sensor and the vibration tube are screwed together via the fixing auxiliary plate. The vortex detector according to item 1, item 2, or item 3.