CN107238417A - Fluid measurement instrument - Google Patents
Fluid measurement instrument Download PDFInfo
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- CN107238417A CN107238417A CN201610187289.1A CN201610187289A CN107238417A CN 107238417 A CN107238417 A CN 107238417A CN 201610187289 A CN201610187289 A CN 201610187289A CN 107238417 A CN107238417 A CN 107238417A
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- measurement instrument
- sidewall portion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/78—Direct mass flowmeters
- G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
- G01F1/84—Coriolis or gyroscopic mass flowmeters
- G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention provides a kind of fluid measurement instrument, including vibrating tube, the vibrating tube is used to be connected to fluid circuit to be measured to detect the fluid in the fluid circuit to be measured；And case, the case includes side of sidewall portion and end cap portions, wherein, the side of sidewall portion is formed as the curved surface of the circumferentially extending along the side of sidewall portion, and the end cap portions lid is mounted in one end of the side of sidewall portion, so as to limit the inner chamber for housing the vibrating tube jointly with the side of sidewall portion.In such a fluid measurement instrument, casing structure has higher rigidity and bearing capacity, and its intrinsic frequency is high relative to conventional case and does not have the plane vibration shape, the vibration interference in the external world can effectively be shielded, effectively prevent from producing resonance with vibrating tube, the measurement accuracy of fluid measurement instrument is improved.
Description
Technical field
The present invention relates to fluid measurement instrument technical field, especially, it is related to the fluid measurement instrument detected by the relevant parameter of the convection flow body of vibrating tube.
Background technology
The content of this part provide only the background information related to the disclosure, and it may not constitute prior art.
The fluid measurement instrument of coriolis mass flowmeters all has purposes widely in many fields (for example, oil, chemical industry, metallurgy etc.), and it is commonly used to parameters such as mass flow, the density of fluid in measurement fluid circuit.Such a fluid measurement instrument generally has the pipe of one or more straight or bendings.Vibration source is disposed with pipe, causes one or more pipes to produce vibration by the excitation of vibration source.When fluid flows through one or more pipes, the parameters such as required mass flow, density are obtained by means of certain technical measures (for example, by means of difference of fluid time of vibration at entrance pipeline section and outlet pipe section).
Such a fluid measurement instrument is commonly used on process control and measurement pipeline, and fluid measurement instrument is in itself and its measurement accuracy is inevitably influenceed by external environment condition.Therefore, case would generally be provided to fluid measurement instrument, to be protected to the associated components in fluid measurement instrument, and reduce influence of the external environment condition to the measurement accuracy of fluid measurement instrument as far as possible.Fig. 1 shows a kind of external structure schematic diagram of known coriolis mass flowmeters.It will be noted from fig. 1 that being encapsulated with the case being welded by multistage pipe in the vibrating tube of the coriolis mass flowmeters, the two ends of case are respectively connecting to the shell of isocon.Because such a casing structure is encapsulated in vibrating tube along the bearing of trend of vibrating tube, and the structure of vibrating tube is not usually simple straight pipe shape, therefore such a casing structure is typically spliced by very some, it is not only complicated, and the time and cost of welding operation needed for it and assembling are also higher.Fig. 2 shows the external structure schematic diagram of another known coriolis mass flowmeters.The vibrating tube of coriolis mass flowmeters in Fig. 2 and the outside of isocon are respectively provided with shell, and two shells are fixed together.The two shells are box-type shell, i.e. it has one or more planar structures.This box-type shell haves the shortcomings that rigidity is low, bearing capacity is poor, section is irregular, complex forming technology, installation time length, manufacturing cost are high.Moreover, box-type shell has plane vibration shape mode due to planar structure in the vibration processes of vibrating tube, the easily vibration with vibrating tube is interfered, and influences the measurement accuracy of coriolis mass flowmeters.
Therefore, it is necessary to a kind of improved fluid measurement instrument be provided, to simplify its structure, the time of reduction assembling and cost, improve measurement accuracy.
The content of the invention
It is an object of the present invention to provide a kind of improved fluid measurement instrument, to improve its bearing capacity, effectively shield the vibration interference in the external world, prevent from producing resonance with vibrating tube, so as to improve the measurement accuracy of fluid measurement instrument.
It is a further object to provide a kind of fluid measurement instrument with improved casing structure, to simplify structure, reduce cost.
A further object of the present invention is to provide a kind of improved fluid measurement instrument, to increase the accommodation space that it is internal.
According to the present invention, it provides a kind of fluid measurement instrument, including：Vibrating tube, the vibrating tube is used to be connected to fluid circuit to be measured to detect the fluid in the fluid circuit to be measured；And case, the case includes side of sidewall portion and end cap portions, wherein, the side of sidewall portion is formed as the curved surface of the circumferentially extending along the side of sidewall portion, and the end cap portions lid is mounted in one end of the side of sidewall portion, so as to limit the inner chamber for housing the vibrating tube jointly with the side of sidewall portion.In such a fluid measurement instrument, casing structure has higher rigidity and bearing capacity, and its intrinsic frequency is higher relative to conventional case and does not have the plane vibration shape, the vibration interference in the external world can effectively be shielded, effectively prevent from producing resonance with vibrating tube, the measurement accuracy of fluid measurement instrument is improved.
According to an embodiment, the side of sidewall portion is formed as revolving body, for example, being cylinder or ellipse.The side of sidewall portion bearing capacity of this structure is higher, be easy to processing, manufacturing cost relatively low.And, because side of sidewall portion is formed as continuous curved surface, in the absence of the plane vibration shape, height of its intrinsic frequency compared with box-type casing structure, it can effectively prevent from producing resonance when fluid measurement instrument from working between case and vibrating tube, effectively shield the vibration interference in the external world so that the fluid measurement instrument information to be gathered avoids the interference of other extraneous vibrations, so as to be greatly enhanced the measurement accuracy of fluid measurement instrument.
According to an embodiment, the side of sidewall portion is integrally formed with the end cap portions or formed independently of one another.Integral structure can reduce assembly process, shorten installation time.And split-type structural is easy to making processing, application aspect more flexible.
According to an embodiment, the end cap portions are flat or at least partly arc.Arc end cap portions are conducive to increasing the inner space of case, the effective clearance between increase case and its internal vibrating tube and related component.
According to an embodiment, the end cap portions are that butt is spherical or spherical.The structure of end cap portions can neatly be adjusted according to practical situations, be not limited with the structure shown in the present invention.
According to an embodiment, the vibrating tube is connected to the fluid circuit to be measured by isocon.
According to an embodiment, the case is fixed to the outer wall of the isocon or is fixed on the storage shell of the accommodating isocon.In the case where that need not provide extra shell for isocon, case can be directly fixed to the outer wall of isocon.In the case where providing extra shell for isocon, case can be fixed on the shell for accommodating isocon.
According to an embodiment, the case is molded by deep drawn or formed by tubular object extruding.
According to an embodiment, jut is provided with the outer peripheral face of the side of sidewall portion.In this way, the load performance of case can be improved further, and the vibration shape of case can be optimized.
According to an embodiment, the jut is to surround the endless belt that the side of sidewall portion continuously extends, or multiple bands including surrounding the side of sidewall portion and being spaced.
According to an embodiment, the curved surface of the side of sidewall portion is connected to each other by multiple small area regions to be formed.As described by below in conjunction with the accompanying drawings, the planar structure that side of sidewall portion is included is smaller, and its intrinsic frequency is higher, thus, it is possible to effectively shield the vibration interference in the external world, effectively prevent from producing resonance with vibrating tube, improves the measurement accuracy of fluid measurement instrument.Side of sidewall portion is formed as continuous curved surface for preferred structure type along its circumferential direction.Formed it is understood, however, that the curved surface of side of sidewall portion can be connected to each other by multiple small area regions, can also so increase the intrinsic frequency of side of sidewall portion, reduce its plane vibration shape, so as to improve the measurement accuracy of whole fluid measurement instrument.Each small area region has independent border, when its area is sufficiently small and when the knuckle between adjacent surface is infinitely great, and plane vibration shape mode levels off to nothing, and casing structure is close to cylinder.
According to an embodiment, the fluid measurement instrument is coriolis mass flowmeters.
Brief description of the drawings
By description referring to the drawings, the feature and advantage of one or several embodiments of the invention will become better understood by.Accompanying drawing as described herein is only in order at illustration purpose and is not intended to limit the scope of the present invention in any way, and accompanying drawing is not necessarily drawn to scale, and some features may be exaggerated or minimized to show the details of particular elements.In the accompanying drawings：
Fig. 1 shows a kind of external structure schematic diagram of known coriolis mass flowmeters, wherein, (a) is overall structure diagram, and (b) is exploded structural representation, and for the sake of clarity, vibrating tube is removed from (b)；
Fig. 2 shows the external structure schematic diagram of another known coriolis mass flowmeters；
Fig. 3 shows the external structure schematic diagram of the fluid measurement instrument according to an embodiment of the invention, wherein also show the adpting flange part for being connected to fluid measurement instrument on fluid circuit to be measured；
Fig. 4 is the front view of fluid measurement instrument illustrated in fig. 3；
Fig. 5 be Fig. 4 in fluid measurement instrument N portions enlarged diagram；
Fig. 6 is the structural representation of the case of fluid measurement instrument illustrated in fig. 3；
Fig. 7 shows the structural representation of case according to another implementation of the invention；
Fig. 8 shows the structural representation of case according to another implementation of the invention；
Fig. 9 shows the structural representation of case according to another implementation of the invention；
The profile that Figure 10 intercepts for the case in Fig. 9 along M-M lines；
Figure 11 shows the schematic diagram of case according to another implementation of the invention, wherein, (a) is overall structure diagram, and (b) is decomposing schematic representation；
Figure 12 shows the schematic diagram of another embodiment of the fluid measurement instrument according to the present invention；
Figure 13 shows the modal analysis result schematic diagram of the case in Fig. 6；
Figure 14 shows a kind of modal analysis result schematic diagram of box-type shell mechanism；And
Figure 15 shows the modal analysis result schematic diagram of another box-type shell mechanism.
Embodiment
The description to each embodiment of the invention is merely exemplary below, and is definitely not to the present invention and its application or the limitation of usage.Adopt in various figures and identical part is denoted by the same reference numerals, therefore the construction of same parts will not be repeated again.
As known for the skilled artisan, fluid measurement instrument (for example, coriolis mass flowmeters) is measured for the relevant parameter (such as mass flow, volume flow, temperature, density) of fluid in fluid pipe road.It generally includes vibrating tube and is connected to the isocon at vibrating tube two ends.Wherein, can be for one or more than one depending on the quantity of vibrating tube is according to actual conditions.The concrete shape of vibrating tube is probably straight, curved or more complicated shape.The isocon used can be one, can also be more than one.With reference to Fig. 1 and Fig. 2, vibrating tube is encapsulated in triangle shell and box-type enclosure interior respectively, invisible from figure.Isocon 1 as illustrated in FIG. 1 is 1, the isocon 1 has been internally formed multi-path fluid passage, shown in arrow in (a) of reference picture 1, treat that fluid measured is flowed into from the L sides of isocon 1, vibrating tube is flowed upwardly into via the first via flow channel inside isocon 1 and corresponding port, then flow, and further flowed out via R sides along the second road flow channel inside isocon 1 in a reverse direction via corresponding port again.And fluid measurement instrument shown in figure 2 has then used two isocons (invisible from Fig. 2).Two isocons are connected to the two ends of vibrating tube, and the two isocons further can be connected to fluid circuit to be measured by two corresponding adpting flange parts 2.
For the fluid measurement instrument under the non-normal temperature working environment in such as high temperature or low temperature, shell is additionally operable to protect these components, prevents it from being damaged caused by external environment condition in addition to playing a part of the component inside splendid attire.However, the present inventors have additionally discovered that, the specific constructive form that shell is used can also produce different degrees of influence for the measurement accuracy of fluid measurement instrument.For the box-type shell mechanism shown in Fig. 2, because box-type shell rigidity is low, bearing capacity is poor and there is planar structure, it is not only easily interfered by outside vibration, and during vibration, the vibration of shell is easily resonated with the vibration of vibrating tube and the magnetoelectricity vibration of electronic components associated therewith, causes the problems such as transducing signal distortion, fluid measurement instrument measurement accuracy decline.To solve such a problem, in addition to being improved property of electronic components associated therewith design (such as providing more preferable Electricity Functional shielding or route protection), it can also be realized by the structure design of shell.
Based on this, the invention provides a kind of fluid measurement instrument with improved shell mechanism, it shields the vibration interference in the external world by carrying out appropriate design to shell mechanism, avoids the vibration of shell in itself and the vibration of fluid measurement instrument inside associated components from interfering, so as to improve the measurement accuracy of fluid measurement instrument.Just the fluid measurement instrument and its produced beneficial effect according to the present invention are described with reference to Fig. 3 to Figure 15 below.
Fig. 3 to Figure 12 shows the numerous embodiments of the fluid measurement instrument according to the present invention.Wherein, Fig. 3 shows the external structure schematic diagram of the fluid measurement instrument according to an embodiment of the invention.In the example shown in Fig. 3, fluid measurement instrument includes the case 30 that isocon 10, vibrating tube (not shown) and cover are enclosed in outside vibrating tube.Two adpting flange parts 20 for being assemblied in fluid measurement instrument both sides, the connection for fluid measurement instrument to fluid circuit to be measured are also show in figure.Certainly, according to the practical situations of fluid measurement instrument, can also there is no adpting flange part.For example, isocon can be soldered directly to fluid circuit to be measured.In addition, the fluid measurement instrument shown in Fig. 3 is only with an isocon 10, the structure of such a isocon 10 as previously mentioned, is not repeated herein.Equally, according to circumstances, it would however also be possible to employ two or more isocon.Also, in addition to structure as depicted, according to actual conditions, isocon can also use other structures form, for example with the form of three-way pipe.
With reference to shown in Fig. 3 to Fig. 5, case 30 fixes (for example, welding) on isocon 10.For example, the two is welded and fixed together again after can case 30 be covered on isocon 10 in the way shown in fig. 5.Vibrating tube entirety quilt cover is enclosed in case 30, and vibrating tube can not be seen from the outside of case 30.So so that vibrating tube and external environs, electronic unit for vibrating tube and thereon provides effective protection.
Case 30 includes side of sidewall portion 301 and end cap portions 302.Side of sidewall portion 301 is substantially enclosed in the outside of the vibration area of vibrating tube.End cap portions 302 are arranged on one end of side of sidewall portion 301, so as to limit the inner chamber for housing whole vibrating tube 301 jointly with side of sidewall portion 301.Side of sidewall portion 301 and end cap portions 302 can be integrally formed as shown in Figure 7, be fixed together again by modes such as welding, bondings after formation independently of one another that can also be as shown in figure 11.
In the example shown in Fig. 3-Figure 11, the side of sidewall portion 301 of case 30 is substantially shaped as cylinder.The characteristics of cylindrical structural is that it has axisymmetric structure, and whole side of sidewall portion is formed as continuous curved surface along its circumferential direction.The stress distribution of this structure is than more uniform, and bearing capacity is higher.The side of sidewall portion of this structure can be molded by deep drawn or directly be formed by tubular object extruding, it is easy to be manufactured, manufacturing tolerance is easily controlled, when being welded with other parts, and weld seam rule, welding procedure are simple, installation time is short, and cost is low.
It is understood that side of sidewall portion can be formed as the curved surface along its circumferentially extending.For example, side of sidewall portion can be connected to each other by three semicircular cylinders on respective side into (that is, its cross section be three end to end semicircles), in this case, it is directly connected between each curved surface rather than rounding off.For another example, side of sidewall portion can be connected to each other on respective side by three semicircular cylinders and be formed, but, with circular arc, sleekly transition is (i.e. between adjacent semicircular cylinder, its cross section is three end to end semicircles, and with arc sleekly transition between adjacent semicircle), it is rounding off between each curved surface in this case.Alternatively, side of sidewall portion is formed as the revolving body (being axisymmetric structure) of arbitrary shape, such as above-mentioned cylinder, or ellipse, and alternatively, side of sidewall portion can also be formed as other nonplanar configurations.For example, cross section is rendered as the configuration of the closed curve of complexity.
The cavity that end cap portions 302 are used to form side of sidewall portion carries out lid envelope at one end.Its shape can be adjusted according to practical application and process convenience, can be spherical (as shown in FIG. 8 and 9) for spherical (as shown in Figure 6 and Figure 7), plate shaped (as shown in figure 11) or the butt that is changed to be formed after flat-top by domed top.It can be seen that, in the case of shown in Fig. 6 and Fig. 7 and Fig. 8 and Fig. 9, at least partly arc of end cap portions 302, wherein, in the case of Fig. 6 and Fig. 7, end cap portions 302 are arc on the whole.And in the case of shown in 8 and Fig. 9, end cap portions 302 are only partially arc.Curved structure is convenient for deep-draw processing to end cap portions at least in part, while more spaces can be provided to internal component.Cylindrical side wall portion in the present invention can be processed by pipe fitting, roll-in or other modes are made.
In the example depicted in fig. 3, only with an isocon 10.This isocon can be formed by cast shaping process, because itself has shell, it is not necessary to be still further provided for the shell mechanism of the isocon.In this case, go out as shown in Figure 4 and Figure 5, the periphery at the top of isocon 10 can be caused to form step-like recessed, and by case 30 cover mounted in this it is step-like it is recessed on, may then pass through the modes such as welding, bonding and case 30 be fixed together with isocon 10.
Alternatively, in unshowned embodiment, it would however also be possible to employ two or more isocon.Exemplified by using two isocons, vibrating tube is connected between two isocons.Generally, two isocons, which can be housed or be accommodated in, stores in shell (with reference to the Rectangular shell 4 in Fig. 2).Case 30 is further fixedly attached to storage shell.Wherein, store shell and could be separately formed the inner chamber for accommodating two isocons, case is fixed on the outer wall for storing shell.Or, store shell and formed as one with case, be collectively defined as accommodating the inner chamber of vibrating tube and isocon.
Alternatively, as shown in Fig. 7, Fig. 9 and Figure 10, jut 303 can be set on the side of sidewall portion 301 of case 30, further to improve the load performance of case, and optimize its vibration shape.Preferably, jut 303 is circumferentially continuous the endless belt extended along side of sidewall portion 301.Alternatively, jut 303 includes the multiple bands for surrounding side of sidewall portion 301 and being spaced.And, it is preferable that multiple juts 303 can be made to be distributed evenly and at intervals along the longitudinal direction of side of sidewall portion to subscribe.
It is appreciated that, in order to avoid or reduce the plane vibration shape caused by planar structure in vibration processes as far as possible, if planar structure to be divided into two or more small area regions with independent edges, also plane vibration shape mode can be improved, wherein, the small area region can have the border of arbitrary shape.When the knuckle between adjacent surface is infinitely great, plane vibration shape mode almost disappears, and casing structure is close to cylinder.Alternately, with reference to shown in Figure 12, by many (number is more, and plane vibration shape mode is smaller) rectangular blocks (being small area region), be circumferentially connected to each other forms side of sidewall portion.With arc transition between adjacent surface, it is thereby possible to reduce the plane vibration shape caused by planar structure.
Illustrate the beneficial effect of the side of sidewall portion using non-planar configurations of the invention with reference to Figure 13-Figure 15.Wherein, the concrete structure of Figure 13-case illustrated in fig. 15 is different, but the material that these cases are used is identical, for example, use stainless steel.
Usually, the vibration frequency of vibrating tube and electronic components associated therewith is both less than 1000 hertz.The vibration interference for resonating and effectively shielding the external world is produced during in order to effectively prevent that fluid measurement instrument from working between case and vibrating tube and electronic components associated therewith, inventor has found, if it will be favourable that the intrinsic frequency of case, which is more than vibrating tube and the vibration frequency of electronic components associated therewith,.
The unit of the numerical value shown in Figure 13-Figure 15 is in (inch).But, it should be noted that, the amplitude shown in referred to herein and accompanying drawing is (for example, 22.43rd, 31.14,48.06,9.34 etc.) it is exemplary modal analysis result, it is these values not represent actual amplitude, and such a model analysis is made after being generally all amplified to original structure.In practical application, the overall structure of case is typically smaller, therefore, and its amplitude is also smaller.
Figure 13 shows the modal analysis result schematic diagram of the cylindrical casing in Fig. 6.Such a case has spherical top, and its fundamental frequency is 2154.5HZ.The amplitude (or being vibration displacement) of the casing structure can substantially be divided into five regions from bottom to top it can be seen from Figure 13, i.e., A, B, C, D, E, wherein, the amplitude of a-quadrant is minimum, the amplitude in E regions is maximum, and it is located at the top of spherical crown, and maximum is 22.43in.The lower end of cylinder is in minimum amplitude region A.
Figure 14 is illustrated that the modal analysis result schematic diagram of square case (i.e. its cross section is generally rectangular shaped).Four sides of the casing structure are substantially plane, and the planar section that top surface is included is smaller.Pass through arc transition between adjacent surface.The fundamental frequency of such a casing structure is 705.2HZ.As seen from Figure 14, the amplitude of shown casing structure is gradually increased by A1 to E1, but from unlike the structure shown in Figure 13, the peak swing region of structure shown in Figure 14 appears in the center section of each side, its maximum be 31.14in.On each side, amplitude is gradually reduced from center section to surrounding.And the transition portion of its top and adjacent surface belongs to minimum amplitude region A1.
Figure 15 is illustrated that the modal analysis result schematic diagram of rectangle (i.e. its cross section is substantially rectangular) case.Wherein, in four sides, along longitudinal direction (i.e., along the direction on the long side of rectangle) side (referred to as longitudinal side) of extension is substantially planar, arc-shaped transition part between adjacent surface has maximum radius, so that along laterally (that is, along rectangle short side direction) extension side (referred to as transverse side) it is almost curved (that is, substantially without plane).The fundamental frequency of the casing structure is 1219.2HZ.It can see in Figure 15, the peak swing of the casing structure appears in the middle part of longitudinal side, and maximum is 48.06in.In longitudinal side, amplitude is gradually reduced from center section to surrounding.And other parts (including top surface and transverse side) belong to minimum amplitude region A2.
By comparing Figure 13, Figure 14, the intrinsic frequency of structure illustrated in fig. 15 and amplitude as can be seen that the intrinsic frequency of cylindrical cover shell structure is significantly greater than box-type casing structure.And by comparing Figure 14 and casing structure illustrated in fig. 15 as can be seen that planar section is fewer, its plane vibration shape mode is smaller, amplitude is also smaller, and the intrinsic frequency of casing structure is also bigger.When arch section is that the limit is big, casing structure is close to cylinder, i.e., the structure close to the crown top of cylinder ball adding as shown in fig. 13.
Therefore, the plane vibration shape of the casing structure of the present invention due to being not present or only existing small area, height of its intrinsic frequency compared with box-type casing structure, it can effectively prevent from producing resonance when fluid measurement instrument from working between case and vibrating tube, effectively shield the vibration interference in the external world, so that the fluid measurement instrument information to be gathered avoids the interference of other extraneous vibrations, so as to improve the measurement accuracy of fluid measurement instrument.
The casing structure of the fluid measurement instrument of the present invention has higher rigidity, can effectively shield the vibration interference in the external world.Because side of sidewall portion does not include planar structure or includes the planar structure of many small areas, eliminate or greatly reduce the plane vibration shape mode in box typed structure, intrinsic frequency is high, can effectively prevent from producing resonance with vibrating tube.In addition, nonplanar side of sidewall portion has more preferable bearing capacity, and vacuumize process can be carried out by internal volume as needed.And such a case can be molded by deep drawn or directly be formed by tubular object extruding, and technique is simple, cost is low, manufacturing tolerance is easily controllable, and weld seam is regular when being welded with miscellaneous part, welding procedure is simple, installation time is short, cost is low.In addition, the effective clearance between case and the vibrating tube inside it and related component can also be increased while cost is reduced.
Although the preferred embodiment of the present invention has been described in detail herein, however, it should be understood that, the invention is not limited in the embodiment be described in detail and shown here, other modifications and variant are may be effected by one skilled in the art without departing from the spirit and scope of the present invention.All these modifications and variant are within the scope of the present invention.Moreover, all components described here can be equivalent in other technologies component replace.
Claims (13)
1. a kind of fluid measurement instrument, including：
Vibrating tube, the vibrating tube is used to be connected to fluid circuit to be measured with to the fluid circuit to be measured
In fluid detected；And
Case (30), the case (30) includes side of sidewall portion (301) and end cap portions (302), its
In, the side of sidewall portion (301) is formed as the curved surface of the circumferentially extending along the side of sidewall portion (301),
And the end cap portions (302) lid is mounted in one end of the side of sidewall portion (301), thus with the side
Wall portion (301) limits the inner chamber for housing the vibrating tube jointly.
2. fluid measurement instrument according to claim 1, wherein, the side of sidewall portion (301)
Be formed as revolving body.
3. fluid measurement instrument according to claim 2, wherein, the side of sidewall portion (301)
Be formed as cylinder or ellipse.
4. fluid measurement instrument according to claim 1, wherein, the side of sidewall portion (301)
It is integrally formed or is formed independently of one another with the end cap portions (302).
5. fluid measurement instrument according to claim 1, wherein, the end cap portions (302)
For flat or at least partly arc.
6. fluid measurement instrument according to claim 1, wherein, the end cap portions (302)
It is spherical or spherical for butt.
7. fluid measurement instrument according to claim 1, wherein, the vibrating tube passes through shunting
Pipe (10) is connected to the fluid circuit to be measured.
8. fluid measurement instrument according to claim 7, wherein, the case (30) is fixed
To the isocon (10) outer wall or be fixed to the storage shell of the accommodating isocon (10)
On.
9. fluid measurement instrument according to claim 1, wherein, the case (30) passes through
Deep drawn is molded or formed by tubular object extruding.
10. fluid measurement instrument according to claim 1, wherein, the side of sidewall portion (301)
Outer peripheral face on be provided with jut (303).
11. fluid measurement instrument according to claim 10, wherein, the jut (303)
For the endless belt continuously extended around the side of sidewall portion (301) or including around the side of sidewall portion
And multiple bands for being spaced (301).
12. fluid measurement instrument according to claim 1, wherein, the side of sidewall portion (301)
The curved surface be connected to each other and form by multiple small area regions.
13. the fluid measurement instrument according to any one of claim 1 to 12, wherein, institute
Fluid measurement instrument is stated for coriolis mass flowmeters.
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| CN104838242A (en) * | 2012-12-17 | 2015-08-12 | 高准公司 | Improved case for vibrating meter |
| CN103206853A (en) * | 2013-03-26 | 2013-07-17 | 褚介平 | Novel smelter for aluminum casting industry |
| CN205537794U (en) * | 2016-03-29 | 2016-08-31 | 高准有限公司 | Fluid measurement device |
| DE202017102703U1 (en) * | 2017-04-14 | 2017-06-14 | Besmed Health Business Corp. | Housing structure of a flow sensor |
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