[특허]Integrally molded magnetic flowmeter

Integrally molded magnetic flowmeter 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01F-001/58
출원번호	US-0627446 (2012-09-26)
등록번호	US-8991264 (2015-03-31)
발명자 / 주소	Rogers, Steven Bruce Smith, Joseph Alan
출원인 / 주소	Rosemount Inc.
대리인 / 주소	Westman, Champlin & Koehler, P.A.
인용정보	피인용 횟수 : 0 인용 특허 : 38

초록 ▼

A magnetic flowmeter for measuring flow rate of a process fluid, includes a magnetic coil arranged to apply a magnetic field to the process fluid. A pair of electrodes are electronically coupled to the process fluid and arranged to sense a voltage induced in the process fluid related to the applied magnetic field and the flow rate of the process fluid. A molded flow tube of a non-conductive material is arranged to receive a flow of the process fluid. The flow tube is molded around the magnetic coil and the pair of electrodes and is configured to support the magnetic coil and the pair of electrodes. Flow meter circuitry is configured to apply a current to the magnetic coil and receive the resultant voltage sensed by the pair of electrodes.

대표청구항 ▼

1. A magnetic flowmeter for measuring flow rate of a process fluid, comprising: a magnetic coil arranged to apply a magnetic field to the process fluid;a pair of electrodes electronically coupled to the process fluid and arranged to sense a voltage induced in the process fluid related to the applied magnetic field and the flow rate of the process fluid;a molded flow tube of a non-conductive material arranged to receive a flow of the process fluid therethrough, the molded flow tube molded to form a tube filled with the non-conductive material such that the non-conductive material is molded around the magnetic coil and the pair of electrodes and configured to support the magnetic coil and the pair of electrodes; andflow meter circuitry configured to apply a current to the magnetic coil and receive the voltage sensed by the pair of electrodes. 2. The magnetic flowmeter of claim 1 including a reinforcing structure which extends around the molded flow tube. 3. The magnetic flowmeter of claim 2 wherein the reinforcing structure comprises a ring. 4. The magnetic flowmeter of claim 2 wherein the reinforcing structure comprises metal. 5. The magnetic flowmeter of claim 4 wherein the metal comprises carbon steel. 6. The magnetic flowmeter of claim 4 wherein the metal comprises stainless steel. 7. The magnetic flowmeter of claim 1 wherein the magnetic coil comprises two magnetic coils contained within the molded flow tube and positioned adjacent the process fluid. 8. The magnetic flowmeter of claim 1 wherein the molded flow tube comprises a polymer. 9. The magnetic flowmeter of claim 1 wherein the pair of electrodes comprise conductive polymer electrodes. 10. The magnetic flowmeter of claim 1 wherein the molded flow tube is arranged in a “wafer” style configured to be mounted between two flanges located at ends of adjacent pipe. 11. The magnetic flowmeter of claim 1 wherein the flowmeter circuitry is further configured to detect a presence of magnetic material proximate the molded flow tube. 12. The magnetic flowmeter of claim 11 wherein the flowmeter circuitry detects magnetic material based upon a magnetic inductance. 13. The magnetic flowmeter of claim 11 wherein the flowmeter circuitry detects magnetic material based upon a detected hysteresis. 14. The magnetic flowmeter of claim 11 wherein the flowmeter circuitry selects a calibration value based upon the magnetic material. 15. The magnetic flowmeter of claim 13 wherein the flowmeter circuitry selects a calibration value based upon the detected hysteresis. 16. The magnetic flowmeter of claim 13 wherein the hysteresis is measured with a high frequency signal. 17. The magnetic flowmeter of claim 16 wherein the high frequency signal is applied during a startup phase. 18. A magnetic flowmeter for measuring flow rate of a process fluid, comprising: a magnetic coil arranged to apply a magnetic field to the process fluid;a pair of electrodes electronically coupled to the process fluid and arranged to sense a voltage induced in the process fluid related to the applied magnetic field and the flow rate of the process fluid;a molded flow tube of a non-conductive material arranged to receive a flow of the process fluid therethrough, the molded flow tube molded around the magnetic coil and the pair of electrodes and configured to support the magnetic coil and the pair of electrodes; andflowmeter circuitry configured to apply a current to the magnetic coil and receive the voltage sensed by the pair of electrodes, wherein the flowmeter circuitry is further configured to detect a presence of magnetic material proximate the molded flow tube based upon detected hysteresis and wherein the flowmeter circuitry selects a calibration value based upon the detected hysteresis. 19. The magnetic flowmeter of claim 18 wherein the hysteresis is measured with a high frequency signal. 20. The magnetic flowmeter of claim 19 wherein the high frequency signal is applied during a startup phase. 21. A magnetic flowmeter for measuring flow rate of a process fluid, comprising: a magnetic coil arranged to apply a magnetic field to the process fluid;a pair of electrodes electronically coupled to the process fluid and arranged to sense a voltage induced in the process fluid related to the applied magnetic field and the flow rate of the process fluid;a molded flow tube of a non-conductive material arranged to receive a flow of the process fluid therethrough, the molded flow tube molded around the magnetic coil and the pair of electrodes and configured to support the magnetic coil and the pair of electrodes; andflowmeter circuitry configured to apply a current to the magnetic coil and receive the voltage sensed by the pair of electrodes, wherein the flowmeter circuitry is further configured to detect a presence of magnetic material proximate the molded flow tube. 22. The magnetic flowmeter of claim 21 wherein the flowmeter circuitry detects magnetic material based upon a magnetic inductance. 23. The magnetic flowmeter of claim 21 wherein the flowmeter circuitry detects magnetic material based upon a detected hysteresis. 24. The magnetic flowmeter of claim 21 wherein the flowmeter circuitry selects a calibration value based upon the magnetic material.

이 특허에 인용된 특허 (38)

Batey Robert H. (Apollo Beach FL), Apparatus for sensing liquid flow and pressure in a conduit and associated methods.
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Collins Timothy R. (Cologne MN) Chinnock Robert T. (Victoria MN) Grant Robert C. (Eden Prairie MN) Hamilton Dean T. (Cologne MN), Capacitive proximity monitoring device for corrosive atmosphere environment.
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Chinnock, Robert T.; Miller, Clifford; Meacham, Charles, Chemically inert flow controller with non-contaminating body.
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Scarpa Thomas J., Commutating electrode magnetic flowmeter.
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Gardner Robert J. (Norton MA) Martin John R. (Foxboro MA), Composite electrode structure.
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Takayanagi, Susumu, Coriolis mass flowmeter including an inner pipe made of fluororesin and outer pipe having fibers.
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Hafner Peter (Liestal CHX) Unterseh Roland (St. Louis FRX), Electromagnetic flow measuring tube and method of making same.
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van der Pol Ronald (Venlo NLX), Electromagnetic flow meter.
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Yamamoto, Tomoshige, Electromagnetic flowmeter.
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Yamamoto,Tomoshige, Electromagnetic flowmeter for applying a magnetic field and a plurality of frequency components to a fluid.
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Schmoock Roy F. (Yardley PA), Electromagnetic flowmeter having a monolithic conduit.
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Salmasi Zareh Soghomonian,GBX ; Jin Wu,GBX ; Gregg Ronald David,GBX ; MacManus Gerard,GBX ; Howarth Craig Timothy,GBX, Electromagnetic flowmeter having low power consumption.
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Yamamoto,Tomoshige, Electromagnetic flowmeter with measuring tube.
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Kleven, Lowell A.; Lesmeister, Brad L., Flow tube having a bonding layer with a fluoropolymer lining.
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Marsh Lawrence B. (Buckeystown MD), Flowmeter with concentrically arranged electromagnetic field.
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Wehrs,David L.; Chinnock,Robert T., Magnetic flow meter with unibody construction and conductive polymer electrodes.
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Wehrs,David L.; Chinnock,Robert T., Magnetic flow meter with unibody construction and conductive polymer electrodes.
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Ehrenberg, Marco; Schwiderski, Hans-Werner, Magnetoinductive flow meter having an electromagnet unit which includes combined magnetic flux-concentrating means.
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Schrag, Daniel; Grothey, Harald; Hencken, Kai; Naegele, Markus, Method and device for operating a flow meter.
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Bittner Franz (Moers DEX) Poortman Boudewijn J. (Dordrecht NLX) Rademacher-Dubbick Kristian (Duisburg DEX) Roskam Abram K. (Sleeuwijk NLX) Stevens Udo (Duisburg DEX) Tromp Wouter T. (Sliedrecht NLX) , Method of making a sensor for a magnetic inductive flowmeter.
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Cushing ; Vincent J., Probe type electromagnetic flow meter with debris shedding capability.
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Schmoock Roy F. (Yardley PA), Unitary electromagnetic flowmeter.
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Schmoock Roy F. (Yardley PA), Unitary electromagnetic flowmeter having molded electrodes.
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Schmoock Roy F. (Yardley PA), Unitary electromagnetic flowmeter with sealed coils.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
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Integrally molded magnetic flowmeter 원문보기

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Integrally molded magnetic flowmeter 원문보기

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