Magnetic induction flowmeter having a metal measuring tube
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01F-001/58
G01F-001/56
출원번호
US-0709251
(2007-02-22)
등록번호
US-7448281
(2008-11-11)
우선권정보
DE-10 2006 008 451(2006-02-23)
발명자
/ 주소
B��cker,Ralf
Krope,Franz
출원인 / 주소
ABB AG
대리인 / 주소
Buchanan Ingersoll & Rooney PC
인용정보
피인용 횟수 :
1인용 특허 :
4
초록▼
A magnetic induction flowmeter having a metal measuring tube (1), which can be inserted into a pipeline system via flanged sections (2a, 2b) at the ends, having at least two mutually opposite measuring electrodes (5a, 5b) introduced into the wall of the measuring tube (1) in an electrically insulate
A magnetic induction flowmeter having a metal measuring tube (1), which can be inserted into a pipeline system via flanged sections (2a, 2b) at the ends, having at least two mutually opposite measuring electrodes (5a, 5b) introduced into the wall of the measuring tube (1) in an electrically insulated manner in order to register a measuring voltage, a magnetic unit (4), likewise arranged on the outside of the measuring tube (1), generating a magnetic field aligned substantially at right angles to the flow direction of the conductive flow medium to be measured, and the measuring tube (1) being provided with an electrically insulating layer (6) on the inside; in the region of the flanged sections (2a, 2b) at the end of the measuring tube (1), an expanded lattice (7) being fixed to the measuring tube (1), to which lattice the insulating layer (6) is applied in such a way that the expanded lattice (7) located within the insulating layer (6) ensures a firm connection between insulating layer (6) and measuring tube (1).
대표청구항▼
The invention claimed is: 1. A magnetic induction flowmeter having a metal measuring tube (1), which can be inserted into a pipeline system via flanged sections (2a, 2b) at the ends, having at least two mutually opposite measuring electrodes (5a, 5b) introduced into the wall of the measuring tube (
The invention claimed is: 1. A magnetic induction flowmeter having a metal measuring tube (1), which can be inserted into a pipeline system via flanged sections (2a, 2b) at the ends, having at least two mutually opposite measuring electrodes (5a, 5b) introduced into the wall of the measuring tube (1) in an electrically insulated manner in order to register a measuring voltage, a magnetic unit (4), likewise arranged on the outside of the measuring tube (1), generating a magnetic field aligned substantially at right angles to the flow direction of the conductive flow medium to be measured, and the measuring tube (1) being provided with an electrically insulating layer (6) on the inside, wherein, in the region of the flanged sections (2a, 2b) at the end of the measuring tube (1), an expanded lattice (7) is fixed to the measuring tube (1), to which lattice the insulating layer (6) is applied in such a way that the expanded lattice (7) located within the insulating layer (6) ensures a firm connection between insulating layer (6) and measuring tube (1). 2. The magnetic induction flowmeter as claimed in claim 1, wherein the expanded lattice (7) extends at least over the sealing region (9) of the flanged sections (2a, 2b). 3. The magnetic induction flowmeter as claimed in claim 1, wherein the metallic measuring tube (1) is composed of a non-rusting steel, selected from the group of stainless steels. 4. The magnetic induction flowmeter as claimed in claim 1, wherein the expanded lattice (7) is fixed to the measuring tube (1) by means of spot welding. 5. The magnetic induction flowmeter as claimed in claim 1, wherein the expanded lattice (7) is composed of a steel that can be welded. 6. The magnetic induction flowmeter as claimed in claim 1, wherein the electrically insulating layer (6) is at least partly formed in the manner of a liner drawn into the measuring tube (1). 7. The magnetic induction flowmeter as claimed in claim 1, wherein the electrically insulating layer (6) is at least partly implemented as an internal coating, which is applied by spraying on or injection molding on. 8. The magnetic induction flowmeter as claimed in claim 1, wherein the electrically insulating layer (6) is composed of electrically nonconductive thermoplastic. 9. The magnetic induction flowmeter as claimed in claim 1, wherein the electrically insulating layer (6) is at least partly composed of a fluorocarbon material or PTFE material. 10. The magnetic induction flowmeter as claimed in claim 1, wherein the region of the insulating layer (6) covering the sealing region (9) of the flanged sections (2a, 2b), functioning as a seal, comes directly into contact with the corresponding pipeline flange (10). 11. The magnetic induction flowmeter as claimed in claim 2, wherein the region of the insulating layer covering the sealing region of the flanged sections, functioning as a seal, comes directly into contact with the corresponding pipeline flange. 12. The magnetic induction flowmeter as claimed in claim 3, wherein the region of the insulating layer covering the sealing region of the flanged sections, functioning as a seal, comes directly into contact with the corresponding pipeline flange. 13. The magnetic induction flowmeter as claimed in claim 4, wherein the region of the insulating layer covering the sealing region of the flanged sections, functioning as a seal, comes directly into contact with the corresponding pipeline flange. 14. The magnetic induction flowmeter as claimed in claim 5, wherein the region of the insulating layer covering the sealing region of the flanged sections, functioning as a seal, comes directly into contact with the corresponding pipeline flange. 15. The magnetic induction flowmeter as claimed in claim 6, wherein the region of the insulating layer covering the sealing region of the flanged sections, functioning as a seal, comes directly into contact with the corresponding pipeline flange. 16. The magnetic induction flowmeter as claimed in claim 7, wherein the region of the insulating layer covering the sealing region of the flanged sections, functioning as a seal, comes directly into contact with the corresponding pipeline flange. 17. The magnetic induction flowmeter as claimed in claim 8, wherein the region of the insulating layer covering the sealing region of the flanged sections, functioning as a seal, comes directly into contact with the corresponding pipeline flange. 18. The magnetic induction flowmeter as claimed in claim 9, wherein the region of the insulating layer covering the sealing region of the flanged sections, functioning as a seal, comes directly into contact with the corresponding pipeline flange.
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이 특허에 인용된 특허 (4)
Batey Robert H. (Apollo Beach FL), Apparatus for sensing liquid flow in a conduit or open channel and associated method.
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