Magneto-inductive, flow measuring device

Patent metadata

Field	Value
Publication number	US-9068868-B2
Application number	US-201013575726-A
Country	US
Kind code	B2
Filing date	Dec 13, 2010
Priority date	Jan 29, 2010
Publication date	Jun 30, 2015
Grant date	Jun 30, 2015

Abstract

A magneto-inductive, flow measuring device for measuring flow of a measured medium through a measuring tube, comprising: at least a first coil assembly for accommodating a coil core is arranged in a first passageway. The coil core has a broadened part and a first stop, which is arranged between the measuring tube and the coil. The broadened part of the coil core in the assembled state of the first coil assembly lies against the first stop of the coil body and prevents shifting of the coil core relative to the coil body along the longitudinal axis of the coil core in a first direction facing away from the measuring tube. The coil body has a second stop, wherein the coil core is secured to the coil body with a securement element (which, in the assembled state, lies against the second stop of the coil body under a prestress along the longitudinal axis of the coil core between the first stop and the second stop of the coil body.

First claim

The invention claimed is:

1. A magneto-inductive, flow measuring device for measuring the flow of a measured medium through a measuring tube, comprising:
at least a first coil assembly having a coil body for accommodating a coil core of a coil, said coil is wound on said coil body and said coil core is arranged in a first passageway of the coil body with a longitudinal axis of said coil core being coaxial with said coil; and
a securement element, wherein:
said securement element provides a fixation of the coil core to the coil body;
said coil core has a broadened part;
said coil body has a first stop, which is arranged between the measuring tube and said coil;
said broadened part in the assembled state of said at least a first coil assembly lies against said first stop and prevents shifting of said coil core relative to said coil body along the longitudinal axis of said coil core in a first direction facing away from the measuring tube;
said coil body has a second stop on a side of said coil body facing away from the measuring tube; and
said coil core is secured to said coil body with said securement element, which, in the assembled state, lies against said second stop under a prestress along the longitudinal axis of said coil core between said first stop and said second stop.

2. The magneto-inductive, flow measuring device as claimed in claim 1 , wherein:
said coil core is broadened to form a pole shoe.

3. The magneto-inductive, flow measuring device as claimed in claim 1 , wherein:
said coil core has a groove and said securement element has at least one projection fitting in said groove of said coil core; and
said coil core and said securement element are connected with one another via a shape interlocking connection of said groove and said projection.

4. The magneto-inductive, flow measuring device as claimed in claim 1 , wherein:
said coil body has at least a third stop; and
said securement element in the assembled state lies against said third stop, whereby shifting of said securement element in a second direction, perpendicular to the first direction, is prevented and whereby shifting of said securement element in a third direction, perpendicular to the first and second directions is prevented.

5. The magneto-inductive, flow measuring device as claimed in claim 1 , further comprising:
at least one pole sheet arranged between said coil core and the measuring tube.

6. The magneto-inductive, flow measuring device as claimed in claim 5 , wherein:
each pole sheet is separately snapped into a depression provided therefor in said coil body in the assembled state of said coil body.

7. The magneto-inductive, flow measuring device as claimed in claim 1 , further comprises:
a second coil assembly, wherein:
said at least a first coil assembly and said second coil assembly are arranged lying oppositely against the measuring tube; and
said coils are so connected that the magnetic fields produced by them point in a common direction.

8. The magneto-inductive, flow measuring device as claimed in claim 7 , wherein:
said at least a first coil assembly and said second coil assembly are connected with one another shape-interlockingly under prestress coaxially with the longitudinal axis of said coil core.

9. The magneto-inductive, flow measuring device as claimed in claim 7 , wherein:
said at least a first coil assembly and said second coil assembly are essentially complementarily constructed.

10. The magneto-inductive, flow measuring device as claimed in claim 1 , wherein:
said coil body has at least one cable guide for guiding a cable, so that the guided cable of a predetermined length does not exceed a predetermined separation from said coil body.

Assignees

• Voigt Frank
• Zingg Thomas
• Bähr Gunther
• Wohlgemuth Werner
• Crnovic Alexander
• Flowtec Ag

Inventors

• Voigt Frank
• Zingg Thomas
• Bähr Gunther
• Wohlgemuth Werner
• Crnovic Alexander

Classifications

• G01F1/586

  constructions of coils, magnetic circuits, accessories therefor (G01F1/582 takes precedence; magnet; inductances; transformers; selection of materials for their magnetic properties per se H01F) · CPC title

• G01F1/584 Primary

  constructions of electrodes, accessories therefor · CPC title