CN102032936A - Magnet device - Google Patents
Magnet device Download PDFInfo
- Publication number
- CN102032936A CN102032936A CN2010105180638A CN201010518063A CN102032936A CN 102032936 A CN102032936 A CN 102032936A CN 2010105180638 A CN2010105180638 A CN 2010105180638A CN 201010518063 A CN201010518063 A CN 201010518063A CN 102032936 A CN102032936 A CN 102032936A
- Authority
- CN
- China
- Prior art keywords
- magnet
- retainer
- fixed
- magnetic pole
- stream pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention provides a magnet device which comprises at least one magnet, a magnet retainer and a nickel coating, wherein the magnet retainer comprises a magnet receiving surface which is approximately planar and is used for receiving the at least one magnet; and the nickel coating is used for fixing the at least one magnet onto the magnet receiving surface of the magnet retainer. The invention also provides a method for forming the magnet device.
Description
The present invention is dividing an application of application number is 200580051771.2, international filing date is on October 6th, 2005 patented claim of the same name.
Technical field
The present invention relates to a kind of magnet apparatus, especially relate to a kind of magnet apparatus of under high-temperature condition, using.
Background technology
January in 1985 people such as disclosed J.E.Smith on the 1st U.S. Pat 4491025 and February nineteen eighty-two disclosed J.E.Smith on the 11st Re.31450 employing Coriolis (Coriolis) mass flow meter measurement flow through mass rate, density and the volumetric flow rate of fluid of pipeline and the out of Memory of fluid are disclosed.These flowmeters have the stream pipe of one or more different structures.Each pipeline configuration can regard that having one group comprises and reversing as simple bending as, radially and natural mode of vibration coupled mode.In typical Coriolis mass flow measurement application, when fluid was flowed through described pipeline, pipeline configuration was energized in one or more vibration shapes, and measured moving of described pipeline along the equidistant points of described pipeline.
The vibration shape of system that is full of described fluid by described stream pipe the quality and the combination of the described fluid in the stream pipe and partly defined.The pipeline that fluid links from the entrance side with described flowmeter flows into described flowmeter.Then, described fluid directly flows through a described stream pipe or a plurality of stream pipe, and enters the pipeline that links with described outlet side from described flowmeter outflow.
Driver (DRIVER) is used for applying exciting force to described stream pipe.Described exciting force makes described stream pipe vibration.When not having fluid to flow through described flowmeter, manage all points at identical phase oscillation along described stream.When fluid began to flow through described stream pipe, the Coriolis accelerating effect made to have different phase places along each point of described stream pipe with respect to other point along described stream pipe.In the phase place of described stream tube inlet side described driver is lagged behind, then make described driver in advance in the phase place of described outlet side.Sensor at the difference of described stream pipe produces the sinusoidal signal of the described stream pipe of representative in the difference motion.Wherein the phase differential between two sensor signals is directly proportional with the mass flowrate of the fluid that flows through a described stream pipe or a plurality of stream pipes.
Stream pipe driver generally includes the coil relative with fixed magnets.Described coil and described fixed magnets are attached on a convection tube or one stream pipe and the balance stem.During work, the magnetic field in the described exciter coil is changed rapidly.Described fixing, relative magnetic pole is auxiliary to produce exciting force, and this exciting force optionally makes described stream pipe collection hold together or separately.
Similarly, the sensor of flowmeter can comprise solenoid sensor and relative magnet, and one of them or both are attached to aforesaid stream pipe.During work, when described stream pipe vibrated, described solenoid sensor roughly produced sinusoidal signal according to the described magnet of motion.
Flowmeter can be measured the flow of fluid under the high temperature applicable cases.Some flowmeter need or be higher than under the situation of this temperature at Fahrenheit temperature 400 degree and uses continuously.In present technology, the magnet that is used as driver and/or sensor device is maintained in the magnet retainer by the mode that hot jacket cooperates.And described magnet retainer is attached to the stream pipe.
In present technology, use under the high-temperature condition that aluminium-nickel-cobalt (AlNiCo) magnet is low at the stream pipe stiffness and amplitude that produce is high.Adopt the defective of AlNiCo magnet to be, when their B magnetic field intensity was hanged down relatively, the quality of described AlNiCo magnet was bigger than the quality of other magnet.Yet in the design of new flowmeter, rigidity height and amplitude are low.Therefore, for suitably operation, the design of new flowmeter then requires little driver of quality and sensing system.Owing to fix by the distance between the described support of the design of described flowmeter, it is unpractical therefore taking bigger magnet simply.
Summary of the invention
According to any embodiment of the present invention, a kind of magnet apparatus is provided and solves above-mentioned and other problem, and can reach than the better technique effect of present technology.
According to embodiments of the invention, provide a kind of magnet apparatus.Described magnet apparatus comprises at least one magnet; Magnet retainer, this magnet retainer comprise that the magnet that is used to accept described at least one magnet that is roughly the plane accepts face; And solder brazing, this solder brazing is accepted face with the described magnet that described at least one magnet is fixed to described magnet retainer.
According to embodiments of the invention, provide a kind of magnet apparatus.Described magnet apparatus comprises at least one magnet; Be used to accept the magnet retainer of described at least one magnet; The countersink region that forms on described magnet retainer, wherein said countersink region are arranged for accepting described at least one magnet; With the solder brazing that described at least one magnet is fixed on the described countersink region of described magnet retainer.
According to embodiments of the invention, provide a kind of magnet apparatus.Described magnet apparatus comprises at least one magnet; Magnet retainer, this magnet retainer comprise that the magnet that is used to accept described at least one magnet that is roughly the plane accepts face; And nickel coating, this nickel coating is accepted face with the described magnet that described at least one magnet is fixed to described magnet retainer.
According to embodiments of the invention, provide a kind of method that forms magnet apparatus.Described method comprises described at least one magnet is installed on the magnet retainer.Described magnet retainer comprises that the magnet that is used to accept described at least one magnet that is roughly the plane accepts face.Described method further comprises described at least one magnet is brazed on the described magnet retainer.Suitable described magnet retainer is fixed on the described oscillation flow meter.
According to embodiments of the invention, provide a kind of method that forms magnet apparatus.Described method comprises described at least one magnet is installed on the magnet retainer.Described magnet retainer comprises that the magnet that is used to accept described at least one magnet that is roughly the plane accepts face.Described method further comprises described at least one magnet nickel plating to described magnet retainer.Suitable described magnet retainer is fixed on the described oscillation flow meter.
Various aspects of the present invention
The one side of described magnet apparatus, described at least one magnet is made up of samarium-cobalt magnet.
Described magnet apparatus on the other hand, described at least one magnet is made up of the samarium-cobalt magnet of nickel plating.
Yet, described magnet apparatus on the other hand, described magnet is accepted face and is included in the countersink region that forms on the described magnet retainer, wherein said countersink region is arranged for accepting described at least one magnet.
Yet, described magnet apparatus on the other hand, described magnet apparatus further comprises the magnetic pole that is fixed in described at least one magnet.
Yet, described magnet apparatus on the other hand, described magnet apparatus further comprises the magnetic pole that is fixed in described at least one magnet, wherein said magnetic pole comprises the solder brazing hole.
The one side of described method, described at least one magnet is made up of samarium-cobalt magnet.
Described method on the other hand, described at least one magnet is made up of the samarium-cobalt magnet of nickel plating.
Yet, described method on the other hand, described magnet is accepted face and is included in the countersink region that forms on the described magnet retainer, wherein said countersink region is arranged for accepting described at least one magnet.
Yet, described method on the other hand, described method further comprises magnetic pole is fixed in described at least one magnet.
Yet, described method on the other hand, described method further comprises the described magnet apparatus of remagnetize.
Description of drawings
In institute's drawings attached, identical Reference numeral is represented components identical.
Accompanying drawing 1 illustrates the flowmeter that comprises metering device and meter electronics;
Accompanying drawing 2 illustrates the magnet apparatus that is used for oscillation flow meter according to the embodiment of the invention;
Accompanying drawing 3 is AA cut-open views of magnet apparatus described in the accompanying drawing 2;
Accompanying drawing 4 illustrates the magnet apparatus according to the embodiment of the invention;
Accompanying drawing 5 is BB cut-open views of magnet apparatus described in the accompanying drawing 4.
Embodiment
Next those skilled in the art 1-5 with reference to the accompanying drawings reach to understand how to make and use best mode of the present invention about the detailed description of specific embodiment.For the purpose of understanding inventive principle, some conventional aspect is simplified or omits.Those skilled in the art have benefited from the distortion that the embodiment of the invention does and all fall into scope of the present invention.Those skilled in the art can be combined to form the technical characterictic of next describing a plurality of distortion of the present invention by different way.Therefore, scope of the present invention not only is confined to the specific embodiment next described, and should determine with claims and its equivalents.
Accompanying drawing 1 illustrates flowmeter 5 and comprises metering device 10 and meter electronics 20.Metering device 10 is in response to the mass flowrate and the density of working fluid.Meter electronics 20 is connected on the metering device 10 by lead 100, and it is used to provide density, mass flowrate and the temperature information by path 26, and out of Memory.Although the coriolis flowmeter structure is very clearly to those skilled in the art, the present invention still is described it does not have other measurement performance as the oscillating tube densitometer coriolis mass flowmeters.
Described stream pipe 130 and 130 ' described side stand 131,131 ' and 134,134 ' are attached to stream pipe mount pad 120 and 120 ' regularly, and described mount pad is attached to arm 150 and 150 ' successively regularly.A kind of fluid passage of flowing through Coriolis metering device 10 of continuous sealing so just is provided.
When the ring flange 103 with intercommunicating pore 102 and 102 ' and 103 ' enters the service pipe (not shown) by inlet end 104 and the described measured working fluid of endpiece 104 ' delivery, fluid enters the inlet end 104 of described instrument by the mouth of pipe 101 of ring flange 103, and be imported into arm 150, flow to stream pipe mount pad 120 then with surface 121.Fluid in the described arm 150 is shunted and is flowed through respectively and manage 130 and 130 '.After the 130 and 130 ' outflow of stream pipe, synthesized an independent stream again at working fluid described in the branch road 150 ', flow to endpiece 104 ' (linking to each other) then and enter the service pipe (not shown) by ring flange 103 ' with screw hole 102 '.
Select roughly to have the stream pipe 130 and 130 ' and it suitably is installed on described stream pipe mount pad 120 and 120 ' of identical young's modulus, make it have roughly the same mass distribution, moment of inertia and system stiffness around bending axis W-W and W '-W ' respectively.Described bending axis passes cramp bar 140 and 140 ' respectively.The young's modulus of described stream pipe varies with temperature and changes, and the calculating of this variable effect flow and density, and resistance temperature detector (RTD) 190 can be installed on the stream pipe 130 ', is used for the temperature of the described stream pipe of continuous coverage.Therefore, the temperature of described stream pipe and the voltage that flows through described RTD from the stream pipe are by adjusting through the temperature of the fluid of described stream pipe.The fixed described temperature with voltage by described RTD is employed in a well-known manner, compensates because the variation of the module of elasticity of the stream pipe 130 that stream pipe variation of temperature causes and 130 ' by meter electronics 20.Described RTD links to each other with meter electronics 20 by lead 195.
Both are energized stream pipe 130 and 130 ' around its corresponding bending axis W and W ' in the opposite direction by driver 180, are called as the first out-phase beam mode of described flowmeter this moment.This excitation mechanism 180 can be made up of any one known device, as is installed on the magnet that flows pipe 130 ' and is installed on the relative coil that flows pipe 130, and flows this device of electric current process that pipes change by vibrating described two.Suitable pumping signal by meter electronics 20 acts on excitation mechanism 180 through lead 185.
Meter electronics 20 is received in the described RTD temperature signal on the lead 195, and generates described left rate signal and right rate signal on lead 165L and 165R respectively.Meter electronics 20 generates pumping signal and acts on excitation mechanism 180 and vibrate described stream pipe 130 and 130 ' on lead 185.Meter electronics 20 is handled described mass flowrate and the density that described left speed and right rate signal and described RTD signal are used to calculate the fluid that flows through described metering device 10.This information adopts and sends use equipment 29 to by path 26 together be measured electronic device 20 of out of Memory.
Accompanying drawing 2 illustrates the magnet apparatus 200 according to the embodiment of the invention.Described magnet apparatus 200 comprises at least one magnet 210 and magnet retainer 220.In one embodiment, described magnet apparatus 200 is applied in the metering device 10 of oscillation flow meter 5.Described oscillation flow meter 5 for example can be made up of coriolis flowmeter or vibration densitometer.
The part that described magnet 210 can be a flowmeter excitation mechanism 180 or the part of flowmeter sensor 170 (referring to accompanying drawing 1).The described magnet 210 that illustrates in this embodiment is roughly cylindrical.Yet, also can adopt other magnet shape.
Described magnet 210 can comprise one or more magnetic element.For example, described magnet 210 can be made up of one group of magnet that is brazing in together.
Described magnet 210 in one embodiment is made up of samarium-cobalt magnet (SmCo).The SmCo magnet keeps its original magnetic property basically when high temperature, have advantage when therefore using in the flowmeter of accepting high temperature flow fluid.For example, at Fahrenheit 400 degree or above under the situation of this temperature, the SmCo magnet can be created in the magnetic flux of satisfaction required in stream pipe driver or the stream tube sensor.Yet, should be understood that also can use other magnet material, as the AlNiCo magnet, and it also falls into the protection domain of instructions and claims.
Described magnet retainer 220 can comprise one or more retainer componentries.Described magnet retainer 220 comprises that the magnet that is used to accept described magnet 210 accepts face 222.In one embodiment, described magnet is accepted face 222 and is roughly the plane.Described magnet retainer 220 can further comprise wall 224 and fabricated section 226.Described wall 224 can be around described magnet 210, but does not contact with described magnet 210.Have clearance G (referring to accompanying drawing 3) between then described magnet 210 and the described wall 224, the part of wherein corresponding described driver or sensor element can move into and shift out this clearance G.Therefore, described wall 224 can be limited to access areas with described magnetic flux between described magnet 210 and described corresponding driver or sensor element.
Should be understood that described wall 224 is not the essential parts of of described magnet retainer 220.Described magnet retainer 220 can include only certain basic element of character, and wherein said clearance G forms between magnet 210 and other element.
In one embodiment, described magnet is nickel plating.Described nickel coating extends beyond at least a portion of described magnet 210 and accepts at least a portion of face 222 above the described magnet of described magnet retainer 220.Described nickel coating is used to improve the high-temperature behavior of samarium-cobalt magnet.In addition, described nickel coating can provide some or all fixing.For example, in forming an embodiment of described magnet apparatus 200, described magnet 210 is installed to described magnet and is accepted on the face 222, and following described whole magnet apparatus 200 is nickel plating.In this embodiment, nickel coating subsequently is fixed in described magnet retainer 220 with described magnet 210.
This accompanying drawing also illustrates the selectable magnetic pole 211 that is fixed in described magnet 210.Described magnetic pole 211 can be made up of other magnet.Selectively, described magnetic pole 211 can be made up of the magnetic conductive material, and it is used to form or conducts described magnetic flux from described magnet 210 to described wall 224.Described magnetic pole 211 can comprise the hole 212 of described magnetic pole 211 solder brazing (or other fixed form) to the described magnet 210.In addition, described magnetic pole 211 can further comprise the flange 213 that roughly cooperates with described magnet 210.
Accompanying drawing 3 is AA cut-open views of magnet apparatus 200 described in the accompanying drawing 2.This cut-open view illustrates the solder brazing 230 that the described magnet that described magnet 210 is fixed in described magnet retainer 220 is accepted face 222.Described solder brazing 230 comprises the filling gold symbolic animal of the birth year welding with identical or different metal utilization fusing.Solder brazing is adopted usually and is comprised the added metal that certain is bronze.Yet solder brazing also can be adopted multiple metal, comprises red metal, nickel, zinc, silver and phosphorus.Solder brazing is not melted described by the base metal spare of solder brazing, but the filling metal that fusing disperses by capillarity.At its liquid temperature, the filling metal of described fusing and the thin layer of described base metal interact, and become especially hard of cooling then is because the interaction of grain pattern has formed airtight connection.Although some solder brazing is believed to comprise the temperature that is low to moderate Fahrenheit 450 degree, typical solder brazing then requires the temperature of Fahrenheit 900-2200 degree.
According to embodiments of the invention, this accompanying drawing further is shown specifically described fabricated section 226.The described fabricated section 226 that illustrates in this embodiment comprises connection holes 228.Described connection holes 228 can be used for described magnet retainer 220 is fixed in or removably is fixed in stream pipe or tube flowing structure.The described connection holes 228 that illustrates in this embodiment has the screw thread that can accept certain threaded fastener.Yet, should be understood that in fact described connection holes 228 and whole erection part 226 can adopt any version that is fixed in flowmeter.
Accompanying drawing 4 illustrates the magnet apparatus 220 according to the embodiment of the invention.In this embodiment, described magnet is accepted face 222 and is comprised and be arranged for the countersink region 229 of accepting described magnet 210.Described countersink region 229 auxiliary positioning and the described magnet of installation.The described magnet 210 in described magnet retainer 220 in the middle of described countersink region 229 can act on well.In addition, described countersink region 229 can provide more zone to be used for described magnet 210 is brazed to described magnet retainer 220.
Accompanying drawing 5 is BB cut-open views of magnet apparatus 200 described in the accompanying drawing 4.This cut-open view illustrates described magnet 210 and is positioned at described countersink region 229.Solder brazing 230 is fixed in described magnet 210 described countersink region 229 and is fixed in described magnet retainer 220.As can be seen, described countersink region 229 can be roughly the plane from accompanying drawing.And can find out also that from accompanying drawing described countersink region 229 can be roughly be complementary with the shape of described magnet 210.In addition, described countersink region 229 can comprise any type of groove 234 that extra solder brazing volume is provided.Selectively, described groove 234 can comprise any type of oncus (RIDGING), roughening (R0UGHENING), structuring (TEXTURING) etc.
Described magnet apparatus 200 according to arbitrary embodiment can be made with the whole bag of tricks.In one approach, the described magnet of the described relatively magnet retainer 220 of described magnet 210 accept that face 222 is installed and by solder brazing in herein.In another approach, described magnet 210 be installed in the described countersink region 229 of described magnet retainer 220 and by solder brazing in herein.In another approach, described uncharged magnet is fixed together described parts by the mode of electroplating.Next, described solder brazing or electro plating device can carry out remagnetize.Described remagnetize is to recover owing to the magnetic susceptibility that heating in the described solder brazing process is lost is implemented for basic.
As needs, may be selected to be any one embodiment that different advantages are provided according to magnet apparatus of the present invention and implement.The invention provides a kind of high temperature magnet device that is used for oscillation flow meter.The invention provides a kind of high temperature magnet device that is used to flow pipe excitation system or stream tube sensor system.The invention provides a kind of by force and effectively magnet installation method that is used for oscillation flow meter.The invention provides a kind of high temperature magnet device that adopts samarium-cobalt magnet.The invention provides a kind of high temperature magnet device that adopts the samarium-cobalt magnet of nickel coating.The invention provides a kind of magnet installation method that is used for samarium-cobalt magnet, wherein, described magnet is installed on the described magnet and does not exert pressure.The invention provides a kind of high temperature magnet device that does not increase described magnet size.
Claims (16)
1. a magnet apparatus (200) comprising:
At least one magnet (210);
Magnet retainer (220), this magnet retainer comprise that the magnet that is used to accept described at least one magnet (210) that is roughly the plane accepts face (222); With
Nickel coating, described nickel coating is accepted face (222) with the described magnet that described at least one magnet (210) is fixed in described magnet retainer (220).
2. magnet apparatus as claimed in claim 1 (200) is characterized in that, described at least one magnet (210) is made up of samarium-cobalt magnet.
3. magnet apparatus as claimed in claim 1 (200), it is characterized in that, described magnet is accepted face (222) and is included in the countersink region (229) that described magnet retainer (220) is gone up formation, and wherein said countersink region (229) is arranged for accepting described at least one magnet (210).
4. magnet apparatus as claimed in claim 1 (200) is characterized in that, further comprises the magnetic pole (211) that is fixed in described at least one magnet (210).
5. magnet apparatus as claimed in claim 1 (200) is characterized in that, further comprises the magnetic pole (211) that is fixed in described at least one magnet (210), and wherein, described magnetic pole (211) comprises solder brazing hole (212).
6. a method that forms magnet apparatus comprises described at least one magnet is installed on the magnet retainer, and wherein said magnet retainer comprises that the magnet that is used to accept described at least one magnet that is roughly the plane accepts face,
It is characterized in that this method further comprises: to described magnet retainer, wherein said magnet retainer is fixed on the oscillation flow meter with described at least one magnet nickel plating.
7. method as claimed in claim 6 is characterized in that, described at least one magnet is made up of samarium-cobalt magnet.
8. method as claimed in claim 6 is characterized in that, described magnet is accepted face and is included in the countersink region that forms on the described magnet retainer, and wherein said countersink region is arranged for accepting described at least one magnet.
9. method as claimed in claim 6 is characterized in that, further comprises magnetic pole is fixed on described at least one magnet.
10. method as claimed in claim 6 is characterized in that, further comprises the described magnet apparatus of remagnetize.
11. method as claimed in claim 6 is characterized in that, whole described magnet apparatus is nickel plating.
12. a magnet apparatus (200), it comprises:
At least one magnet (210); With
Magnet retainer (220), described magnet retainer comprise that the magnet that is used to accept described at least one magnet (210) that is roughly the plane accepts face (222),
Nickel coating, described nickel coating extends on whole substantially magnet apparatus, and described at least one magnet (210) is fixed in described magnet retainer (220).
13. magnet apparatus as claimed in claim 12 (200) is characterized in that, described at least one magnet is made up of samarium-cobalt magnet.
14. magnet apparatus as claimed in claim 12 (200), it is characterized in that, described magnet is accepted face (222) and is included in the countersink region (229) that described magnet retainer (220) is gone up formation, and wherein said countersink region (229) is arranged for accepting described at least one magnet (210).
15. magnet apparatus as claimed in claim 12 (200) is characterized in that, further comprises the magnetic pole (211) that is fixed on described at least one magnet (210).
16. magnet apparatus as claimed in claim 12 (200) is characterized in that, further comprises the magnetic pole (211) that is fixed on described at least one magnet (210), wherein, described magnetic pole (211) comprises solder brazing hole (212).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010518063.8A CN102032936B (en) | 2005-10-06 | 2005-10-06 | Magnet apparatus |
| HK11106150.0A HK1152106A1 (en) | 2005-10-06 | 2011-06-15 | Magnet assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010518063.8A CN102032936B (en) | 2005-10-06 | 2005-10-06 | Magnet apparatus |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800517712A Division CN101278173B (en) | 2005-10-06 | 2005-10-06 | Magnet apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102032936A true CN102032936A (en) | 2011-04-27 |
| CN102032936B CN102032936B (en) | 2016-06-29 |
Family
ID=43886131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010518063.8A Active CN102032936B (en) | 2005-10-06 | 2005-10-06 | Magnet apparatus |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102032936B (en) |
| HK (1) | HK1152106A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829832A (en) * | 2012-08-30 | 2012-12-19 | 太原太航科技有限公司 | Electric magnetization device of Coriolis mass flowmeter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4738144A (en) * | 1986-10-03 | 1988-04-19 | Micro Motion, Inc. | Drive means for oscillating flow tubes of parallel path coriolis mass flow rate meter |
| US6167589B1 (en) * | 1999-03-25 | 2001-01-02 | Daren J. Luedtke | Control mechanism including a permanent magnet system |
| US20030052667A1 (en) * | 1998-10-14 | 2003-03-20 | Michael Schwabe | Drum-shaped measuring standard |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH612287A5 (en) * | 1975-05-22 | 1979-07-13 | Bbc Brown Boveri & Cie | |
| US4045738A (en) * | 1976-03-08 | 1977-08-30 | General Electric Company | Variable reluctance speed sensor of integral construction utilizing a shielded high coercive force rare earth magnet positioned directly adjacent the sensing rotating element |
| JPH10239002A (en) * | 1997-02-24 | 1998-09-11 | Zexel Corp | Core structure for linear displacement sensor and its manufacture |
-
2005
- 2005-10-06 CN CN201010518063.8A patent/CN102032936B/en active Active
-
2011
- 2011-06-15 HK HK11106150.0A patent/HK1152106A1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4738144A (en) * | 1986-10-03 | 1988-04-19 | Micro Motion, Inc. | Drive means for oscillating flow tubes of parallel path coriolis mass flow rate meter |
| US20030052667A1 (en) * | 1998-10-14 | 2003-03-20 | Michael Schwabe | Drum-shaped measuring standard |
| US6167589B1 (en) * | 1999-03-25 | 2001-01-02 | Daren J. Luedtke | Control mechanism including a permanent magnet system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829832A (en) * | 2012-08-30 | 2012-12-19 | 太原太航科技有限公司 | Electric magnetization device of Coriolis mass flowmeter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102032936B (en) | 2016-06-29 |
| HK1152106A1 (en) | 2012-02-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101278173B (en) | Magnet apparatus | |
| RU2344377C2 (en) | Vibration type measuring transducer for measuring flowing fluid media and measuring device | |
| US5497666A (en) | Increased sensitivity coriolis effect flowmeter using nodal-proximate sensors | |
| JP5674675B2 (en) | Coriolis flowmeter with improved vibration mode separation | |
| US7143655B2 (en) | Magnetic circuit arrangement for a transducer | |
| CN103109164B (en) | Thermal stress compensation in a curved tube vibrating flow meter | |
| KR101744480B1 (en) | Collocated sensor for a vibrating fluid meter | |
| CN109341798A (en) | For determining the method and device of the temperature of the vibrating sensor component of vibrometer | |
| JP2000513454A (en) | Method for measuring mass flow rate and sensor therefor | |
| US9666347B2 (en) | Magnet keeper assembly method | |
| JP6395860B2 (en) | Flow meter manifold with position indexing boss | |
| CN102037336A (en) | Dual tube coriolis flow meter with a central stationary plate serving as support for driver and pick-off components | |
| EP1530706B1 (en) | Linear actuator | |
| US20230304843A1 (en) | Transducer for a vibrating fluid meter | |
| CN105371908A (en) | Flow meter | |
| CN102032936A (en) | Magnet device | |
| JP7004810B2 (en) | Compact vibration flow meter | |
| RU2806624C1 (en) | Transducer for vibrating flow meter | |
| JP2018536863A (en) | Asymmetric flow meter and associated method | |
| JP2020160083A (en) | Compact flowmeter and related method | |
| JP2020165990A (en) | Asymmetric flowmeter and related method | |
| CA2159090C (en) | Vibrating tube densimeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1152106 Country of ref document: HK |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1152106 Country of ref document: HK |