CN203573793U - Coil assembly, electromagnetic flowmeter, field instrument, and voltage transformation equipment - Google Patents
Coil assembly, electromagnetic flowmeter, field instrument, and voltage transformation equipment Download PDFInfo
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- CN203573793U CN203573793U CN201320393436.2U CN201320393436U CN203573793U CN 203573793 U CN203573793 U CN 203573793U CN 201320393436 U CN201320393436 U CN 201320393436U CN 203573793 U CN203573793 U CN 203573793U
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Abstract
The application provides a coil assembly, an electromagnetic flowmeter, a field instrument, and voltage transformation equipment. The coil assembly comprises at least one vortex coil. At least one of the upper and lower side surfaces of a lead wire of the vortex coil and the corresponding integral side surface of the vortex coil are coplanar, and the surface is a flat surface or a curved surface matched with the mounting position. In the application, the coil is obtained via integral one-step processing of a conducting material without needing binding, heating and setting, or other working procedures. The molding process of the coil is reliable and the coil is not liable to deformation. The shape of the coil is ensured to confirm to requirements. Moreover, the electrical performance of all vortex coils can be identical so that the product consistency is good.
Description
Technical field
The application relates to coil block and field instrument.
Background technology
Inductance coil of the prior art adopts artificial winding method to obtain.When artificial coiling is shaped, need to tie up coil, add heat setting, easily cause winding deformation, the resistance inductance characteristic of coil is difficult to guarantee.
Utility model content
The application's object is to provide a kind of coil block, electromagnetic flowmeter, field instrument and potential device, and the coil obtaining by electric conducting material being carried out to overall time processing is provided, and effectively guarantees that coil shape meets the requirements.
The application's execution mode provides a kind of coil block, comprise at least one vortex coil, at least one side in two sides up and down of the wire of described vortex coil and the respective side of vortex coil integral body are coplanar, and described is plane or the curved surface that adapts with installation site.
Described vortex coil can obtain by etching process or Sheet Metal Forming Technology manufacture.
The shape of the involute of described vortex coil can be circle, ellipse or polygon.
The cross section of described wire can be rectangle.
Described at least one vortex coil can comprise at least two stacked vortex coils.
Above-mentioned coil block can also comprise the insulating barrier of space between adjacent vortex coil.
Described insulating barrier can comprise hole, and hole described in described vortex coil encircling.
Described wire can comprise coated insulation layer or passivation layer.
The swirl direction of adjacent vortex coil can be contrary, and be electrically connected to by the outboard end of vortex coil, or be electrically connected to by the medial end of vortex coil.
Between described end, can be electrically connected to or conductive rivet is electrically connected to by spot welding mode.
Two outboard end that are not mutually electrically connected to of adjacent vortex coil or two medial ends each other can interval preset distances, and this preset distance is enough to avoid described two outboard end or medial end mutually to connect by mistake or avoids described other conductor to be connected with another outboard end or medial end when other conductor is electrically connected to one of them outboard end or medial end by mistake.
In another execution mode of the application, provide a kind of electromagnetic flowmeter, comprise that described electromagnetic flow-measurement device comprises coil block as above by the pipeline of fluid with to the electromagnetic flow-measurement device of measuring by the flow of described pipeline.
Another execution mode of the application also provides a kind of field instrument, comprises coil block as above.
Another execution mode of the application also provides a kind of potential device, comprises coil block as above.
In the application, by electric conducting material being carried out to overall time processing, obtain coil, do not need to tie up, add the operations such as heat setting, coil molding process is reliable, not yielding, guarantees that coil shape meets the requirements, and can make the electric property of each vortex coil identical, good product consistency.
Accompanying drawing explanation
With reference to the explanation to the application's execution mode below in conjunction with accompanying drawing, can understand more easily the application's above and other objects, features and advantages.With example, nonrestrictive mode illustrates the application to accompanying drawing.Parts in accompanying drawing, just for the application's principle is shown, might not be drawn to scale, and the relative size pass of different parts of while or part ties up to can be from different shown in accompanying drawing in possible situation.In the accompanying drawings, same or similar technical characterictic or parts will adopt same or similar Reference numeral to represent.
Fig. 1 is the schematic diagram of the coil block that provides of the application's execution mode;
Fig. 2 is another schematic diagram of the coil block that provides of the application's execution mode;
Fig. 3 is the schematic diagram of the coil block that provides of another execution mode of the application;
Fig. 4 is the schematic diagram of the application of the coil block that provides of the application's execution mode in electromagnetic flowmeter;
Fig. 5 a is the mutually nested schematic diagram of vortex coil that the application's execution mode provides with Fig. 5 b.
Embodiment
With reference now to accompanying drawing, the application's execution mode is described in further detail.Providing of example embodiment is in order to make the application more detailed, and passes on fully protection range to those skilled in the art.Set forth numerous specific detail as the example of specific features, device, so that the detailed understanding to the application's execution mode to be provided.Will be apparent that to those skilled in the art, example embodiment can be implemented and not necessarily use these specific details by many different forms, so they should not be interpreted as limiting the application's scope.In addition, the element of describing in an accompanying drawing of the present utility model or a kind of execution mode and feature can combine with element and feature shown in one or more other accompanying drawing or execution mode.In some example embodiment, for purposes of clarity, in accompanying drawing and explanation, do not describe well-known process, structure and technology in detail.
the execution mode of coil block (one)
Present embodiment provides a kind of coil block, and as shown in Figure 1, this coil block 10 comprises vortex coil 11.
Vortex coil refers to winding wire therefrom mind-set outer involute extension in same plane substantially, and the wire that forms coil is increasing apart from the distance at center.Vortex coil has two ends, is positioned at the medial end at vortex center place and is positioned at the outboard end of vortex outer rim, between two ends, be around continuous conductors.It should be noted that, here " involute " refers to the involute of broad sense, in polar coordinate system, from the center as limit, along wire, advance, utmost point footpath is the trend that becomes large generally, but also may temporarily diminish in part, only need to guarantee that the utmost point footpath of outer coil circle is greater than the utmost point footpath of the corresponding polar angle of inner coil circle position.Or can say that involute in the application refers to the various distortion of standard involute, for example each circle coil can be essentially rectangle or other shapes, comprises irregularly shaped.In addition, " vortex coil " in the application is not only included in the vortex coil in same plane, is also included in the result of the vortex winding deformation in same plane.For example, can make the plane deformation at vortex coil place, for example, be deformed at least a portion of cylinder or sphere, or other rules or irregular, the structure so obtaining is still referred to as " vortex coil " in this application.Correspondingly, in " coplanar " concept that is about in the back mention, if on on-plane surface, can be understood as after hypothesis vortex coil returns in plane, vortex coil meets described coplanar condition.
Therefore, based on as above definition, the shape that the integral body of vortex coil can adapt for plane, curved surface or other and its application scenarios, just integral body shown in Fig. 1 is the example of the vortex coil 11 of plane, the integral body of vortex coil 11 can also be other shapes, for example, the global shape of vortex coil can be the shape of a saddle.
Equally, based on as above definition, the shape of the involute of vortex coil comprises circle, ellipse, polygon or other shapes, and Fig. 1 only illustrates the example that the involute of vortex coil is rectangular shape, should be noted that present embodiment is not limited to this.The shape of involute can arrange according to actual needs, can be with reference to one or more settings of following factor: the shape of the installation site of vortex coil, for the shape of the parts of the insertion hub of a spool of fixed scroll coil, manufacture the cost etc. of vortex coil.The installation site of vortex coil is for example even other irregular, plane, curved surface.When the installation site of vortex coil is plane, the involute of vortex coil can be positioned at same plane; When the installation site of vortex coil is curved surface, the involute of vortex coil can be in same plane.
The wire that forms vortex coil at least has upper and lower two sides, and the respective side of at least one side in these upper and lower two sides and vortex coil integral body is coplanar.The wire of the vortex coil shown in Fig. 1 comprises four faces, and the cross section of the coil illustrating is rectangle, and the shape that it should be noted that the cross section of coil can also be other shapes, and such as trapezoidal, circular etc., present embodiment is not limited to this.
And the shape of the cross section of coil is subject to the impact of technique.For example, vortex coil shown in Fig. 1 can obtain by etching process or Sheet Metal Forming Technology manufacture, and when adopting etching process to obtain, the upper and lower surface shape of coil section is subject to the impact of stock material shapes, for example, when raw material are copper thin flat plate, the upper and lower surface of the copper cash that corrosion obtains is plane.In etching process, the left and right face of the wire conventionally obtaining is also plane, and wire is whole forms rectangular cross-sectional shape as shown in Figure 1, but the application is not limited to this.When adopting Sheet Metal Forming Technology to manufacture vortex coil, the impact that the shape of cross section of the wire of formation coil is subject to mould is very large.For example, when in vortex lines ring mould, the shape of cross section corresponding with wire is rectangle, the shape of cross section of the wire of the vortex coil of formation is also rectangle conventionally.Similarly, if the shape of cross section corresponding with wire is other shapes in vortex lines ring mould, the shape of cross section of the wire of the vortex coil forming is correspondingly other shapes.
The size of the cross section of the wire of formation coil, the size of the electric current that thickness of wire can be passed through according to conductor material, actual needs, ambient temperature etc. are determined.For example, in the situation that other conditions are identical, the cross-sectional area of the copper conductor of use can be less than the cross-sectional area of the aluminum conductor of use.In the situation that other conditions are identical, the cross-sectional area of the larger wire that should adopt of electric current that need to pass through is larger, for example suppose 10 square millimeters of following bare copper wires every square millimeter of corresponding 6-7 peace electric current in the situation that of 25 degrees Celsius of ambient temperatures, when electric current is increased to 18 ampere-hours from 6 peaces, the sectional area of bare copper wire should correspondingly be increased to 3 square millimeters from 1 square millimeter.It should be noted that numerical values recited is herein only example, and be not used in the physical relationship limiting between sectional area of wire size and size of current.
Form each interval between the multiturn of coil, the size of the spacing distance between adjacent turn can not cause the electric current between the wire of adjacent turn to be directly communicated with.Spacing distance between adjacent turn equals the transverse width of wire upper surface or lower surface under special circumstances.For example, when manufacturing coil by etching process, can on copper coin, print two identical mutually nested patterns of vortex coil, the spacing distance in two vortex coils that obtain between adjacent turn is substantially equal to the transverse width of wire upper surface or lower surface.Similarly, in the mode of manufacturing vortex coil by Sheet Metal Forming Technology, also can utilize two identical mutually nested patterns of vortex coil to obtain the vortex coil that spacing distance between adjacent turn is substantially equal to the transverse width of wire upper surface or lower surface.
And the interval action between adjacent turn is similar, the wire that forms coil can also have insulation surface structure.For example, conductive line surfaces can have coated insulation layer or passivation layer.Coated insulation layer can obtain by coating or plate megohmite insulant at bare wire vortex coil surface, and passivation layer can obtain by bare wire vortex coil being immersed can react to produce in the solution of megohmite insulant with bare wire coil.
As shown in Figure 1, vortex coil 11 center can have larger opening, and this opening can be for fixed scroll coil, for example, by this opening, coil is fixed on its applied device together with inserting the parts of hub of a spool.Certainly, also can vortex coil be fixed on its accompanying position by adhesive etc., but present embodiment is not limited to this.The entity that magnetic core etc. contributes to the magnetic field that intensifier coil produces can also be inserted in the center of vortex coil 11, for example iron core or other magnetic cores, and its shape can be cylinder, prism etc., but the application's execution mode is not limited to this.
The size of the magnetic field intensity that the number of turn of vortex coil 11 can produce as required, the electric current passing through etc. determines, the application does not limit this.
Vortex coil 11 can be manufactured by etching process as above or Sheet Metal Forming Technology.When manufacturing vortex coil 11 by etching process, drawn vortex coil pattern is for example printed on copper sheet, on copper sheet, form for example carbon dust vortex coil pattern, then the copper coin with vortex coil pattern is immersed to for example etchant solution of iron oxide, after eroding unnecessary copper coin, obtain the copper vortex coil corresponding with vortex coil pattern, wherein this copper coin can be used and utilize soft base copper coin, so that the vortex lines cast precedent that can crooked make is as horse-saddle.When manufacturing vortex coil 11 by Sheet Metal Forming Technology, prepare pressing equipment, vortex lines ring mould and plate in advance, by pressing equipment and coordinating of vortex lines ring mould plate being carried out to punching press, obtain vortex coil.It should be noted that to be only the simple declaration to the manufacturing process of above-mentioned vortex coil 11 herein, and be not used in its specific implementation process that limits.In addition, except the etching process and Sheet Metal Forming Technology of above-mentioned introduction, can also by other techniques for example Forging Technology according to the pattern of required vortex coil, raw material is exerted pressure, the shape of feed change, thus manufacture vortex coil.
In the application of vortex coil 11, for prevent vortex coil 11 and other conductors for example the accompanying body surface of vortex coil 11 electrically contact, can 11 times insulating barrier be set at vortex coil, as shown in Figure 2, below shape of a saddle vortex coil 11, insulating barrier 12 be set.For the ease of to the operational example of vortex coil 11 as fixed scroll coil 11, can perforate be set at insulating barrier 12 center.At the vortex coil of other shapes, arrange shown in insulating barrier and Fig. 2 for 11 times similarly, do not repeat them here.In addition, also insulating barrier 12 can be set, but vortex coil 11 itself is had below by coated insulation layer or the passivation layer specifically introduced.
In the application of vortex coil 11, can be that a vortex coil 11 is used separately, or a plurality of vortex coil 11 be used together.Latter event will be introduced in detail in following execution mode.
the execution mode of coil block (two)
Present embodiment provides a kind of coil block, and as shown in Figure 3, coil block 10 comprises at least two stacked vortex coils 11.
As shown in Figure 3, each vortex coil 11 is big or small basic identical from top to bottom, the swirl direction of adjacent vortex coil, and the direction of rotation that coil starts from medial end is opposite each other, and each vortex coil can be around identical center.All stacked vortex coils formation cascaded structure that is connected to each other, concrete, between adjacent vortex coil, by two outboard end or two medial ends, connect, thereby, because the swirl direction of each stacked vortex coil is contrary, make electric current direction of rotation wherein identical.Between adjacent vortex coil, can directly contact (winding wire itself has insulating barrier or passivation layer) or by other materials of inserting for example insulating barrier be separated from each other.
Each vortex coil 11 from top to bottom big or small basic identical global shape, involute shape, the cross section of wire and the interval between adjacent turn etc. that refer to adjacent vortex coil is basic identical each other, and difference is that the swirl direction of adjacent windings is opposite each other.
In addition, each stacked vortex coil 11 also can differ from one another, for example top-down each vortex coil 11 varies in size, or the interval between the adjacent turn of different vortex coils is different, but the electric current direction of rotation of each vortex coil 11 is identical, so that the magnetic direction that each vortex coil 11 produces is identical, realize the stack of magnetic field intensity.
Between adjacent vortex coil, by end, be electrically connected to.Between adjacent vortex coil, can be electrically connected to by two outboard end or two medial ends, the mode with outer end-outer end or inner end-inner end is electrically connected to, and now, as shown in Figure 3, the swirl direction of adjacent vortex coil is contrary.But it should be noted that between adjacent vortex coil and also can realize electrical connection by the mode of inner end-outer end or outer end-inner end, now, can between interior outer end, wire jumper be set, the swirl direction of adjacent windings is identical.
Electrical connection between two ends of adjacent vortex coil includes but not limited to be electrically connected to or conductive rivet is electrically connected to by spot welding mode.
For fear of between two outboard end or medial end mutually mistake connect or avoid described other conductor to be connected with another outboard end or medial end mistake when other conductor is electrically connected to one of them outboard end or medial end, by two outboard end that there is no mutual electrical connection or the medial end each interval preset distance of adjacent vortex coil.For example, when connecting two ends that need connection, avoid connecting mistakenly the end that does not need connection.For example, in the situation that the coil block shown in Fig. 3, two discrete outboard end of adjacent vortex coil can be set, make their projection each interval preset distances on the face parallel with coil surface.
For the ease of connecting end, as shown in Figure 3, outboard end 111 can be set to relative coil and protrude laterally, medial end 112 is set to relative coil and protrudes to the inside, by the end of protruding, connect adjacent vortex coil.
Being directly electrically connected between two ends between adjacent vortex coil, the remainder mutually insulated between adjacent vortex coil.For example, if form the wire of each vortex coil, be to there is for example wire of coated insulation layer or passivation layer of insulation system, now except vortex overhang is directly electrically connected to by wire, the remainder of wire is all insulated structure to be separated.
In addition, between adjacent vortex coil, insulating barrier can also be set, by the further space between adjacent coil of insulating barrier.The material of this insulating barrier can be set according to actual needs flexibly, for example, include but not limited to insulating resin.
When using insulating barrier space between adjacent coil, the end position that adjacent vortex coil is electrically connected to does not need to arrange insulating barrier, to facilitate adjacent vortex coil by the electrical connection of end.
As Fig. 3 illustrates, between adjacent vortex coil, comprise insulating barrier 12, the vortex coil 11 of its space between adjacent.Insulating barrier 12 can comprise hole, and the position in this hole and size coordinate with vortex coil, and vortex lines corral is around this hole.Can fixed coil assembly by this hole, thus for example can coil block be enclosed within to fixed coil assembly on installing component by this hole.The shape in hole can be according to the installing component design coordinating with hole.
Insulating barrier 12 can be manufactured separately, then by the stacked coil block of vortex coil 11 and the alternately laminated formation of insulating barrier 12.Between insulating barrier 12 and vortex coil 11, can fix by for example adhesive.Or, after making single vortex coil 11, for this single vortex coil 11 arranges insulating barrier 12, then take single vortex coil and insulating barrier thereof as the coil block shown in cell formation Fig. 3; Or in a side of manufacturing for example copper coin of vortex coil 11, coat or plate the material needing in advance, then by corrosion or punching press, obtain the vortex coil with insulating barrier; But the application is not limited to this.
When wire itself has insulating barrier, insulating barrier 12 can be set; Correspondingly, when insulating barrier 12 is set, owing to having distance between adjacent windings circle in turbulent structure, can not be in contact with one another short circuit, so vortex coil itself can not have insulating surface or insulating barrier, wire now can be bare wire.
Need explanation, the overall structure of coil block can, for plane, curved surface or other shapes, include but not limited to the horse-saddle shown in Fig. 3.Each vortex coil in coil block has roughly the same integral face structure, and for example in Fig. 3, each vortex coil has respectively horse-saddle, but the application is not limited to this.
A plurality of stacked vortex coils have been shown in Fig. 3, still, have it should be noted that a plurality of vortex coils might not be laminated to each other, for example a plurality of vortex coils may be alternately arranged with each other in a face, and this face can be plane or curved surface.Or a plurality of vortex coils not coplanar are not stacked yet, for example two mutual vortex coil 11 relative two ends in cross-section of pipeline respectively of series connection, provide the magnetic field perpendicular to the equidirectional of cross-section of pipeline together.
the application of coil block
Present embodiment provides a kind of field instrument, comprises the coil block as described in above-mentioned arbitrary execution mode.According to actual needs, in field instrument, can comprise single vortex coil or stacked a plurality of vortex coils.
Above-mentioned field instrument can for example, for being used the equipment of solenoid generation electromagnetic induction, electromagnetic flowmeter.As shown in Figure 4, the electromagnetic flowmeter that present embodiment provides comprises the coil block 10 arranging on pipeline 41 by fluid, duct wall, and the electromagnetic flow-measurement device (not shown) of measuring by the flow of pipeline according to 10 pairs of coil blocks and display unit (not shown) that the result of measuring is shown.
As shown in Figure 4, electromagnetic flowmeter can be included in pipeline 41 bilateral symmetry and be arranged on two coil blocks 10 on the outer wall of pipeline 41, and each coil block 10 can comprise 4 stacked essentially identical vortex coils.But, needing explanation, Fig. 4 is only for example is not used in the concrete application of limiting coil assembly in electromagnetic flowmeter.The quantity of the coil block that electromagnetic flowmeter is included is not limited by Fig. 4, and for example, when single coil assembly can produce satisfactory magnetic field, electromagnetic flowmeter can only comprise 1 coil block.The number of plies of the coil block that electromagnetic flowmeter is included is not limited by Fig. 4, can be 1 layer (i.e. 1 vortex coil) or other numbers of plies.
Fig. 4 coil assembly 10 is the shape of a saddle matching with pipeline outer wall shape, and this can make coil block 10 be combined well with pipeline.Need explanation, when pipeline outer wall alteration of form, the global shape of coil block 10 also changes thereupon, and coil block 10 can be matched with pipeline outer wall shape.
Fig. 4 coil assembly 10 is arranged on pipeline outer wall, needs explanation, and coil block 10 also can be arranged on other positions that can produce enough magnetic field and can not affect the transmission of pipeline inner fluid in pipeline, and for example, coil block 10 may be away from pipeline outer wall.
Above-mentioned field instrument can also be other equipment, for example potential device.
Present embodiment provides a kind of potential device, comprises the coil block as described in above-mentioned arbitrary execution mode.
Potential device generally includes primary coil, secondary coil and magnetic core.In present embodiment, primary coil and secondary coil can all adopt above-mentioned coil block, or only have one of them to adopt above-mentioned coil block.
Above-mentioned field instrument can also be other equipment, such as electromagnetic relay etc.Application about coil block in these other equipment can be with reference to the introduction to above-mentioned electromagnetic flowmeter and potential device, can adjust coil block shape, number etc. so that itself and application scenarios match.
It should be noted that term used herein is only for describing the object of concrete execution mode, but not be intended to limit the application." one " of singulative used herein and " being somebody's turn to do (the) " are intended to also comprise plural form, unless different implications clearly pointed out in context.It should also be understood that, term " comprises " existence that refers to illustrated feature, integral body, operation, step, element and/or parts while using in this manual, but does not get rid of existence or the interpolation of one or more other features, integral body, operation, step, element, parts and/or its combination.
Corresponding construction in claim, material, action and be intended to comprise in conjunction with other claimed arbitrary structures, material or the actions that will usually carry out function with all equivalents of the key element of " device or step add function " definition.To the application's description, be for the purpose of illustration and description, but not be intended to carry out exhaustive or restriction the application with disclosed form.Those skilled in the art can expect the many modifications and variations to the application in the situation that do not depart from the application's scope and spirit.Execution mode selected and that describe is in order to explain best the application's principle and practical application, and makes others skilled in the art to understand the application for the various execution modes with the various modifications that are suitable for expected concrete purposes.
Claims (14)
1. a coil block, it is characterized in that comprising at least one vortex coil, at least one side in two sides up and down of the wire of described vortex coil and the respective side of vortex coil integral body are coplanar, and described is plane or the curved surface that adapts with installation site.
2. coil block as claimed in claim 1, is characterized in that described vortex coil obtains by etching process or Sheet Metal Forming Technology manufacture.
3. coil block as claimed in claim 1, it is characterized in that described vortex coil involute be shaped as circle, ellipse or polygon.
4. coil block as claimed in claim 1, the cross section that it is characterized in that described wire is rectangle.
5. the coil block as described in claim 1-4 any one, is characterized in that described at least one vortex coil comprises at least two stacked vortex coils.
6. coil block as claimed in claim 5, is characterized in that, also comprises the insulating barrier of space between adjacent vortex coil.
7. coil block as claimed in claim 6, is characterized in that, described insulating barrier comprises hole, hole described in described vortex coil encircling.
8. coil block as claimed in claim 5, is characterized in that, described wire comprises coated insulation layer or passivation layer.
9. coil block as claimed in claim 5, is characterized in that, the swirl direction of adjacent vortex coil is contrary, and is electrically connected to by the outboard end of vortex coil, or is electrically connected to by the medial end of vortex coil.
10. coil block as claimed in claim 9, is characterized in that, is electrically connected to or conductive rivet is electrically connected between described end by spot welding mode.
11. coil blocks as claimed in claim 9, it is characterized in that, two outboard end or two the medial end each interval preset distances that are not mutually electrically connected to of adjacent vortex coil, this preset distance is enough to avoid described two outboard end or medial end mutually to connect by mistake or avoids described other conductor to be connected with another outboard end or medial end mistake when other conductor is electrically connected to one of them outboard end or medial end.
12. 1 kinds of electromagnetic flowmeters, comprise by the pipeline of fluid with to the electromagnetic flow-measurement device of measuring by the flow of described pipeline, it is characterized in that described electromagnetic flow-measurement device comprises the coil block as described in claim 1-11 any one.
13. 1 kinds of field instruments, is characterized in that comprising the coil block as described in one of claim 1-11.
14. 1 kinds of potential devices, is characterized in that comprising at least one coil block as described in claim 1-11 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320393436.2U CN203573793U (en) | 2013-07-03 | 2013-07-03 | Coil assembly, electromagnetic flowmeter, field instrument, and voltage transformation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320393436.2U CN203573793U (en) | 2013-07-03 | 2013-07-03 | Coil assembly, electromagnetic flowmeter, field instrument, and voltage transformation equipment |
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| Publication Number | Publication Date |
|---|---|
| CN203573793U true CN203573793U (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320393436.2U Expired - Lifetime CN203573793U (en) | 2013-07-03 | 2013-07-03 | Coil assembly, electromagnetic flowmeter, field instrument, and voltage transformation equipment |
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| CN (1) | CN203573793U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282421A (en) * | 2013-07-03 | 2015-01-14 | 艾默生过程控制流量技术有限公司 | Coil assembly, manufacturing method thereof and on-site instrument |
| CN111771104A (en) * | 2018-02-28 | 2020-10-13 | Abb瑞士股份有限公司 | Electromagnetic flowmeter |
-
2013
- 2013-07-03 CN CN201320393436.2U patent/CN203573793U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282421A (en) * | 2013-07-03 | 2015-01-14 | 艾默生过程控制流量技术有限公司 | Coil assembly, manufacturing method thereof and on-site instrument |
| CN111771104A (en) * | 2018-02-28 | 2020-10-13 | Abb瑞士股份有限公司 | Electromagnetic flowmeter |
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Granted publication date: 20140430 |