Magnetic-inductive measuring device for flowing substances and method for its production

• US 7,137,307 B2
• Filed: 10/06/2004
• Issued: 11/21/2006
• Est. Priority Date: 10/10/2003
• Status: Expired due to Fees

• Current Assignee: ABB AG (ABB Limited)
• Original Assignee: ABB Patent GmbH (ABB Limited)
• Inventors: Lorito, Fabrizio, Rasche, Gunter, Oehler, Arno Erich, Scholz, Wolfgang, Schwiderski, Hans-Werner, Szasz, Paul, Keese, Dieter, Huck, Ralf, Vogel, Albrecht, Thone, Andreas, Eifel, Dominik, Huybrechts, Dirk, Asaah, Eniet
• Primary Examiner(s): PATEL, HARSHAD R
• Application Number:
  US10/958,372
• Publication Number:
  US 20050183514A1
• Time in Patent Office: 776 Days
• Field of Search: 738/611.2, 738/611.4
• US Class Current: 73/861.12
• CPC Class Codes: G01F 1/588 combined constructions of electrodes, coils or magnetic circuits, accessories therefor
• CPC Class Codes: G01F 15/006 characterised by the use of a particular material, e.g. anti-corrosive material G01F15/14 takes precedence

Abstract

The invention relates to a magnetic-inductive measuring device for flowing substances with at least one subsystem respectively for carrying the substances, recording measuring signals through a signal pickup, generating a magnetic field through at least two exciting coils and a ferromagnetic core and bounding the measuring device on the ambient side of the housing. The measuring device is characterized in that at least one of the subsystems is entirely or partly formed by layers of fibre composite material and/or is embedded in layers of fibre composite material.

Claims

1. A magnetic-inductive measuring device for measuring the through flow of electrically conductive flowing substances, comprising:

a measuring tube that carries the flowing substances;

a signal pickup connected to the measuring tube, wherein the signal pickup measures signals generated by the flowing substances;

a magnetic system connected to the measuring tube, wherein the magnetic system generates a magnetic field that is applied to the flowing substances, and

a housing that bounds the measuring tube on an ambient side,

wherein at least one of the measuring tube, the signal pickup, and the magnetic system is entirely or partly formed by layers of fibre composite material and/or is embedded in layers of fibre composite material,

wherein at least one shielding layer against electrical or magnetic or electromagnetic fields is embedded in the layers of fibre composite material between the signal pickup and the housing on the ambient side.

2. The measuring device according to claim 1, wherein the shielding layer is formed from conductive fibre composite material or from metal foil or from metal mesh.

3. The measuring device according to claim 1, wherein an electrical connection device is attached to the housing such that electrical connecting conductors are formed from at least one of the signal pickup and the measuring transducer including the coils to the electrical connection device.

4. The measuring device according to claim 3, wherein the electrical connection device comprises a measuring transducer.

5. A magnetic-inductive measuring device for measuring the through flow of electrically conductive flowing substances, comprising:

a measuring tube that carries the flowing substances;

a signal pickup connected to the measuring tube, wherein the signal pickup measures signals generated by the flowing substances;

a magnetic system connected to the measuring tube, wherein the magnetic system generates a magnetic field that is applied to the flowing substances;

a housing that bounds the measuring tube on an ambient side; and

an additional pickup for recording at least one further measured variable of at least one of the substance and the measuring tube,

wherein at least one of the measuring tube, the signal pickup, and the magnetic system is entirely or partly formed by layers of fibre composite material and/or is embedded in layers of fibre composite material.

6. The measuring device according to claim 5, wherein the information obtained from a measuring signal of the at least one further measuring pickup is used to carry out a device diagnosis, in particular the device diagnosis includes at least one of monitoring the operational limit and determining the remaining service life.

7. A magnetic-inductive measuring device for measuring the through flow of electrically conductive flowing substances comprising:

a measuring tube that carries the flowing substances;

a signal pickup connected to the measuring tube, wherein the signal pickup measures signals generated by the flowing substances;

a magnetic system connected to the measuring tube, wherein the magnetic system generates a magnetic field that is applied to the flowing substances;

a housing that bounds the measuring tube on an ambient side; and

a first measuring pickup for recording a measured variable of the flowing substance and a second further measuring pickup for recording a measured variable of the measuring tube,

wherein at least one of the measuring tube, the signal pickup, and the magnetic system is entirely or partly formed by layers of fibre composite material and/or is embedded in layers of fibre composite material.

8. The measuring device according to claim 7, wherein at least one of the first and second measuring pickup is a temperature sensor.

9. The measuring device according to claim 8, wherein the first measuring pickup is one of a pressure sensor, or an optical turbidity sensor, an optical analyzer, or an imaging optoelectronic component.

10. The measuring device according to claim 8, wherein the second measuring pickup is a strain gauge.

11. A magnetic-inductive measuring device for measuring the through flow of electrically conductive flowing substances, comprising:

a measuring tube that carries the flowing substances;

a signal pickup connected to the measuring tube, wherein the signal pickup measures signals generated by the flowing substances;

a magnetic system connected to the measuring tube, wherein the magnetic system generates a magnetic field that is applied to the flowing substances;

a housing that bounds the measuring tube on an ambient side; and

a bounding surface on a substance side of the device, wherein the bounding surface is nanostructured and formed with reduced adhesiveness,

wherein at least one of the measuring tube, the signal pickup, and the magnetic system is entirely or partly formed by avers of fibre composite material and/or is embedded in layers of fibre composite material.

12. The measuring device according to claim 11, wherein the bounding surface on the substance side is structured in the manner of a lotus leaf surface.

13. A magnetic-inductive measuring device for measuring the through flow of electrically conductive flowing substances, comprising:

a measuring tube that carries the flowing substances;

a signal pickup connected to the measuring tube, wherein the signal pickup measures signals generated by the flowing substances;

a magnetic system connected to the measuring tube, wherein the magnetic system generates a magnetic field that is applied to the flowing substances; and

a housing that bounds the measuring tube on an ambient side,

wherein at least one of the measuring tube, the signal pickup, and the magnetic system is entirely or partly formed by layers of fibre composite material and/or is embedded in layers of fibre composite material, and

wherein the layers of fibre composite material are produced by a winding technique.