IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0619005
(2009-11-16)
|
등록번호 |
US-8286502
(2012-10-16)
|
우선권정보 |
DE-10 2008 057 756 (2008-11-17) |
발명자
/ 주소 |
- Pelayo, Juan Carlos Gonzalez
|
출원인 / 주소 |
|
대리인 / 주소 |
Roberts Mlotkowski Safran & Cole, P.C.
|
인용정보 |
피인용 횟수 :
9 인용 특허 :
5 |
초록
▼
An electromagnetic flowmeter for mass flow measurement of a flowing medium having a measuring tube, a magnetic field generator for generating a magnetic field at least partially passing through the measuring tube, having two electrodes for tapping into a measurement voltage induced in the flowing me
An electromagnetic flowmeter for mass flow measurement of a flowing medium having a measuring tube, a magnetic field generator for generating a magnetic field at least partially passing through the measuring tube, having two electrodes for tapping into a measurement voltage induced in the flowing medium and having a housing incorporating the measuring tube, the magnetic field generator and the electrodes, wherein the measuring tube has a cross section that varies along its length and the cross section in the mid-section of the measuring tube is smaller than at its ends, preferably the cross section of the measuring tube being rectangular in its mid-section, optionally also square, and wherein the housing preferably has a circular cross section. At least one reinforcement, preferably two, is provided in the mid-section of the measuring tube joining the measuring tube and the housing.
대표청구항
▼
1. Electromagnetic flowmeter for flow measurement of a flowing medium, comprising: a measuring tube,a magnetic field generating means for generating a magnetic field at least partially passing through the measuring tube,electrodes for tapping into a measurement voltage induced in the flowing medium,
1. Electromagnetic flowmeter for flow measurement of a flowing medium, comprising: a measuring tube,a magnetic field generating means for generating a magnetic field at least partially passing through the measuring tube,electrodes for tapping into a measurement voltage induced in the flowing medium, anda housing incorporating the measuring tube, the magnetic field generating means and the electrode,wherein the measuring tube has a cross section that varies along its length with the cross section in a mid-section of the measuring tube being smaller than at ends thereof, andwherein at least one reinforcement is provided joining the measuring tube and the housing in the mid-section of the measuring tube; andwherein the measuring tube has sufficient pressure tolerance only in conjunction with the reinforcement and the housing. 2. Electromagnetic flowmeter according to claim 1, wherein the reinforcement comprises at least one support joining the measuring tube to the housing. 3. Electromagnetic flowmeter according to claim 2, wherein said at least one support comprises at least two supports joining the measuring tube to the housing. 4. Electromagnetic flowmeter according to claim 3, wherein each support is a hollow cylinder. 5. Electromagnetic flowmeter according to claim 4, wherein the electrodes are provided within the supports joining the measuring tube and the housing. 6. Electromagnetic flowmeter according to claim 3, wherein the magnetic field generating means has magnetic coils, the magnetic coils being provided on or in the supports joining the measuring tube and the housing. 7. Electromagnetic flowmeter according to 6, wherein the supports form pole shoes for the magnetic coils of the magnetic field generating means. 8. Electromagnetic flowmeter according to claim 1, wherein a support ring surrounds the measuring tube in the mid-section thereof, the measuring tube being joined to the housing via the support ring and the reinforcement. 9. Electromagnetic flowmeter according to claim 1, characterized in that the housing is provided with a support ring that surrounds the measuring tube. 10. Electromagnetic flowmeter according to claim 1, wherein at least one measuring tube formation member is provided within the housing and wherein the measuring tube formation member forms the mid-section of the measuring tube together with a part of an inner surface of the housing. 11. Electromagnetic flowmeter according to claim 10, wherein said at least one measuring tube formation member comprises at least two measuring tube formation members. 12. Electromagnetic flowmeter according to claim 1, wherein the measuring tube has a wall thickness in the mid-section that is smaller than at the ends of the measuring tube. 13. Electromagnetic flowmeter for flow measuring of a flowing medium, comprising: a measuring tube,a magnetic field generating means for generating a magnetic field at least partially passing through the measuring tube,electrodes for tapping into a measurement voltage induced in the flowing medium, anda housing incorporating the measuring tube, the magnetic field generating means and the electrode,wherein the measuring tube has a cross section that varies along its length with the cross section in a mid-section of the measuring tube being smaller than at ends thereof, andwherein the measuring tube in a lenghtwise direction functionally comprises multiple sections with different radii of curvature. 14. Electromagnetic flowmeter according to claim 13, wherein the measuring tube functionally comprises three sections a mid-section and an end section adjacent each of opposite sides of the mid-section. 15. Electromagnetic flowmeter according to claim 14, wherein the mid-section has a radius of curvature that is greater than that of the end sections. 16. Electromagnetic flowmeter according to claim 13, wherein the measuring tube functionally comprises five sections, the five sections being a mid-section, a transitional section adjacent each of opposite sides of the mid section and an end section adjacent to each of opposite sides of the transitional sections. 17. Electromagnetic flowmeter according to claim 16, wherein the mid-section has a radius of curvature that is greater than that of the end sections and the transitional sections. 18. Electromagnetic flowmeter according to claim 13, characterized in that the end sections have a radius of curvature that goes to infinity and are arranged adjacent to the transitional sections at an angle of about 40° to 50° relative to a center line of the measuring tube. 19. Electromagnetic flowmeter according to claim 13, wherein the measuring tube has a support member supporting a support ring.
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