CN207703278U

CN207703278U - Coriolis mass flowmeters and its sensor module

Info

Publication number: CN207703278U
Application number: CN201721079247.2U
Authority: CN
Inventors: 孔令军; 高巍; 钟文
Original assignee: Chengdu Ruifan Zhida Technology Co Ltd
Current assignee: Chengdu Ruifan Zhida Technology Co Ltd
Priority date: 2017-08-25
Filing date: 2017-08-25
Publication date: 2018-08-07
Anticipated expiration: 2027-08-25

Abstract

The utility model discloses a kind of coriolis mass flowmeters sensor modules, flowmeter has the upstream line connector for connecting upstream fluid pipeline and the downstream line connector for connecting downstream fluid pipeline, upstream line connector and the axis of downstream line connector are located on same central axes, sensor module is installed in the shell of flowmeter, it includes the oscillating component being separated by vibration insulation structure and non-vibration part, vibration insulation structure includes at least the first vibration piece that fluid flow pipe is separated into vibration pipeline and non-vibration pipeline, first vibration piece is arranged close to central axes.The utility model is by the way that the first vibration piece to be arranged close to central axes, so that the distance of the first vibration piece to the central axes of upstream and downstream pipe joint is shorter, if oscillating component has vibration to leak out, it is so also shorter in the distance of the axis of the exciting force of vibration isolation on piece formation to upstream and downstream link position, rotation will not be generated because of the bias of exciting force.

Description

Coriolis mass flowmeters and its sensor module

Technical field

The utility model is related to coriolis mass flowmeters, and in particular to a kind of stream with series dual loop piping The sensor module of body flow duct and coriolis mass flowmeters with the sensor module.

Background technology

Coriolis mass flowmeters are a kind of instrument directly critically measuring fluid flow.Typical Coriolis matter Measure flowmeter structure main body use two U-tubes side by side, allow two pipes under its resonant frequency with same frequency and reversed-phase vibrate, i.e., they It can draw close or open simultaneously simultaneously.If while vibrating tube synchronous vibration, direct fluid into pipe, is allowed to along pipe forward Flowing, then vibrating tube vibrates forced fluid therewith.Fluid in order to revolt this forced vibration, can give vibrating tube one with The vertical reaction force in its flow direction, it is this be called Coriolis effect under the action of, vibrating tube by generate torsion become Shape, fluid inlet section pipe and fluid outlet section pipe can be variant in the time order and function of vibration, and it is poor that this is called phase time, this difference It is different directly proportional to the size for the liquid mass flow for flowing through vibrating tube.It, can if the size of this time difference can be detected The size of mass flow is determined.Coriolis mass flowmeters are exactly to be made according to above-mentioned principle.

Currently, according to the vibrating tube quantity in sensor, single tube type and shaped double tube can be divided into, single tube type instrument does not shunt, Flow is equal everywhere in measurement pipe, has outside to balanced null point, also allows for cleaning, but easily interfered by extraneous vibration, be detected in The product of early stage and some small-bore instrument.Shaped double tube instrument had both realized the measurement of two-tube phase difference, has also increased big signal and has increased It is strong linearly, while reducing the influence of extraneous vibration interference.It can be roughly divided into Straight and curved according to the tubular-shaped structures of sensor Tubular, Straight instrument is not easy to stockpile gas, and flow sensor size is small, light-weight.But natural frequency of vibration high RST is not easy to detect, To make the natural frequency of vibration be unlikely to too high, often tube wall is made relatively thin, easily frayed and corrosion.The instrument piping of elbow-shaped detection pipe Rigidity is low, and it is relatively large to generate signal, technology also relative maturity.Because the natural frequency of vibration is also low (80-150Hz), may be used compared with Thick tube wall, instrument is wear-resisting, corrosion resistance is preferable, but easily stockpiles gas and residue causes additive error to be cut has to installation space It is required that.

Currently on the market it is more mature it is tubular be double Π type pipe structures, because its is simple in structure, manufacture is easy, sensitivity Moderate, the stronger feature of impact resistance makes presently the most economic sensor structure.

But when mass flowmenter is applied to food and medical field, then double Π type pipe structures are not used substantially, it is former Because being：First, food and medical field have hygienic requirements, as cannot have shunt conduit inside the flowmeter of metering；Its It is secondary, if doing Π shape form of tubes with single tube, multi-modal coupling can occur because of internal pipeline complexity, influence performance, therefore, generally Single tube or non-Π shapes pipe structure can only be used for the mass flowmenter of food and medical field, This reduces both measuring accuracy, Also counteract the popularization of mass flowmenter.

To solve the above-mentioned problems, there are a kind of double Π types single tube sensors with not flow dividing structure in the prior art Coriolis mass flowmeters, as disclosed in Chinese patent literature CN1116588C with continuous fluid flow pipe section in Profit mass flowmenter difficult to understand, fluid flow pipe have dual loop, the input pipe from fluid stream used in the fluid of place's reception by the road Fluid is returned to fluid and flows through output pipe used in material, and surrounds the shell of dual loop by road, flow meter assembly tool Have：The second loop with the first and second ends in fluid flow pipe is configured, by first end from the first loop The second end receives fluent material, is guided fluent material to output pipe by the second end；In fluid flow pipe Bridging section, it is guided streaming flow to the second loop by the first loop；It is fixedly connected on shell and fluid flow pipe Fixed connecting part；And it is connected to the supporting rod of the first loop and the second loop.

However, there are still following defects in actual use for the prior art：1, in the prior art, vibration isolation piece is apart from upper The vertical range of downstream line connector central axes is longer, causes when oscillating component has vibration to leak out, then in vibration isolation piece Vertical range of the exciting force of upper formation apart from upstream and downstream pipe joint central axes is also longer, causes to produce because of the bias of exciting force Raw rotation.2, in the prior art, upstream and downstream pipeline is respectively positioned on for the oscillating component of its sensor module and non-vibration part On the central axes of connector, lead to the vertical range of the axis of the centroidal distance upstream and downstream pipe joint of sensor module farther out, To cause, when the oscillating component of sensor module occurs vibrating and leak, non-vibration part to be caused to vibrate, influence to flow The stability of gauge.

Utility model content

The purpose of this utility model is to provide a kind of coriolis mass flowmeters and its sensor module, existing to solve In technology there is the defect that rotation is generated because of the bias of exciting force in coriolis flowmeter.

For this purpose, in a first aspect, the utility model provides a kind of coriolis mass flowmeters sensor module, it is special Sign is, the flowmeter has upstream line connector for connecting upstream fluid pipeline and for connecting downstream fluid pipeline Downstream line connector, the axis of the upstream line connector and the downstream line connector is located on same central axes, described Sensor module is installed in the shell of the flowmeter comprising the oscillating component that is separated by vibration insulation structure and non-is shaken Dynamic part, the vibration insulation structure include at least by the fluid flow pipe be separated into the first of vibration pipeline and non-vibration pipeline every Shake part, and first vibration piece is arranged close to the central axes.

Preferably, first vibration piece is located above or below the central axes, first vibration piece with it is described The vertical range of central axes is 0-20mm.

Preferably, the vertical range of first vibration piece and the central axes is 0-10mm.

Preferably, the oscillating component and the non-vibration part shake relative to the moment difference of the central axes to be described The 0-20% of the central axes moment values is arrived in dynamic part.

Preferably, the oscillating component and the non-vibration part are relative to horizontal residing for first vibration piece Moment difference is 0.

Preferably, sensor module includes

Fluid flow pipe, have fluid input lines and fluid outlet line and be connected on the fluid input lines and Dual loop piping between fluid outlet line；The dual loop piping is divided into vibration pipeline by the vibration insulation structure With non-vibration pipeline；

Exciting bank is arranged on the vibrating tube road, for driving the vibration pipeline vibration；

Detection device is arranged on the vibrating tube road, the relative velocity for detecting the vibration pipeline；

Increase weight structure, is arranged on the non-vibration pipeline；

The exciting bank, the vibration pipeline and the detection device constitute the oscillating component；The weightening structure, The non-vibration pipeline constitutes the non-vibration part.

Preferably, the dual loop piping includes the first loop being connect with the fluid input lines and the stream Second loop of body efferent duct connection, the plane residing for first loop is parallel with the plane residing for the second loop, and described the One loop is connect with second loop by crossover line.

Preferably, the exciting bank includes the driving line being arranged at the intermediate position of two loops of the vibration pipeline Circle；And/or the detection device includes the corresponding corner portion being arranged in the top section of two loops of the vibration pipeline First detection sensor and the second detection sensor.

Preferably, the weightening structure is the clump weight being fixedly mounted on the non-vibration pipeline.

Preferably, the material of the fluid flow pipe is one kind in stainless steel, Hastelloy, titanium alloy；And/or institute The material for stating clump weight is one kind in stainless steel, Hastelloy, titanium alloy, spheroidal graphite cast-iron.

Preferably, the clump weight accounts on the non-vibration pipeline at a distance from the vibration pipeline root described non-shake The 30%-50% of the vertical development length of dynamic pipeline.

Preferably, the clump weight is the outstanding support that level is erected on the non-vibration pipeline, and the outstanding support is described The horizontal direction of non-vibration pipeline is symmetrical set.

Preferably, the outstanding support is with certain thickness rectangular block.

Preferably, the bulk one that the minimum length and width dimensions of the rectangular block are formed with the non-vibration pipeline outer edge It causes.

Preferably, the thickness of the rectangular block is 0.5-1.5 times of single conduit outer diameter of the non-vibration pipeline.

Preferably, the thickness of the rectangular block is 1 times of single conduit outer diameter of the non-vibration pipeline.

Preferably, the flow direction according to fluent material in the fluid flow pipe, the outstanding support, which is equipped with, supplies first ring First through hole, the second through-hole and the third through-hole that road is worn, and equipped with the fourth hole worn for second loop, the 5th Through-hole and the 6th through-hole, wherein the second through-hole and third through-hole of first loop are arranged in the outstanding support back edge It the left and right sides and is symmetrical arranged, the fourth hole and fifth hole of second loop are arranged on a left side for the outstanding support front edge Right both sides and be symmetrical arranged, the first through hole of first loop and the 6th through-hole of the second loop between other through-holes and It is symmetrical set.

A kind of coriolis mass flowmeters, including：

Shell；

Sensor module is installed on the enclosure interior；

The sensor module is the sensor component.

The advantages of the utility model：

1, coriolis mass flowmeters sensor module provided by the utility model, the upstream line connector of flowmeter It is located on same central axes with the axis of downstream line connector, sensor module includes the vibration being separated by vibration insulation structure Part and non-vibration part, the vibration insulation structure is included at least is separated into vibration pipeline and non-vibration pipe by the fluid flow pipe First vibration piece on road, the utility model is by the way that the first vibration piece to be arranged close to the central axes so that the first vibration piece arrives The distance of the central axes of upstream and downstream pipe joint is shorter, if oscillating component has vibration to leak out, then being formed in vibration isolation on piece Exciting force to upstream and downstream link position axis distance it is also shorter, rotation will not be generated because of the bias of exciting force.

2, coriolis mass flowmeters sensor module provided by the utility model, thereon downstream line connector be located at On same central axes, sensor module is separated into oscillating component and non-vibration part by vibration insulation structure, and the utility model passes through By the center of gravity of sensor module generally on the central axes so that when vibration, which occurs, in oscillating component to leak, due to sensor The center of gravity of component is close proximity to or positioned on the central axes of upstream and downstream pipe joint, to reduce sensor around upstream and downstream connection position The radius of gyration for the axis set.Therefore, no matter the oscillating component of sensor leaks because which kind of reason generates vibration, is all difficult to cause The non-vibration part of entire sensor vibrates, and improves the stability of flowmeter.

3, coriolis mass flowmeters sensor module provided by the utility model, the oscillating component and described non- Oscillating component is that the oscillating component is horizontal to this relative to the horizontal moment difference residing for first vibration piece The 0-20% of moment values.It is arranged by this kind so that if oscillating component generation vibration leaks, due to oscillating component and non-vibration The horizontal moment difference of opposite first vibration piece in part is smaller, can offset substantially, be conducive to improve the steady of flowmeter It is qualitative.

4, coriolis mass flowmeters sensor module provided by the utility model, since its fluid flow pipe has Dual loop piping, therefore sensor module provided by the utility model is a kind of double-tube type instrument, has both realized two-tube phase The measurement of difference also increases signal enhancing linearly, while reducing the influence of extraneous vibration interference；Since its fluid flow pipe is Series pipe, as a pipeline, therefore sensor module provided by the utility model is a kind of the two-tube of not flow dividing structure Type instrument is widely used in have in the technical field of flow dividing structure coriolis flowmeter requirement, such as hygiene-type section Li Aoli mass flowmenters；And due to not having flow dividing structure, not only it is easier to implement welding, but also can reduce required Welding operation；The sensor module of the utility model, also by the way that weightening structure is arranged on the non-vibration pipeline of fluid flow pipe, The center of gravity of sensor module is adjusted by the way that weightening structure is arranged on non-vibration pipeline, vibrational state is improved, reduces non- It vibrates pipeline and vibrates the vibration coupling of pipeline；And the structure that increases weight and its non-vibration pipeline and coriolis mass flowmeters Shell does not contact, this is also the sensing of the utility model and coriolis mass flowmeters disclosed in CN1116588C patent documents The core of device assembly is distinguished, in coriolis mass flowmeters sensor module disclosed in CN1116588C patent documents, by Part is fixedly connected in it to be directly welded together with housing base, although its housing base and case lid and fixed company Relay part uses sizable quality, but this can only reduce the distortion caused by welding and cannot completely eliminate and to shaking Dynamic separating effect is limited, and the sensor module of the utility model, the structure that increases weight and non-vibration pipeline do not connect with flowmeter shell It touches so that non-rigid connection between the non-vibration part of sensor module and flowmeter shell, this is conducive to improve vibration isolation Effect is conducive to flowmeter and obtains stable zero and excellent metering performance.

5, sensor module provided by the utility model, weightening structure is the counterweight being fixedly mounted on non-vibration pipeline Block, it is simple in structure, it is easily worked production, it is few that the production cost increases while obtaining balanced null point and excellent metering performance Perhaps, be conducive to marketing and volume production.

6, sensor module provided by the utility model, by setting clump weight and fluid flow pipe to same material Matter, and by being welded to connect, obtain good welding and physical property, be conducive to the stability and meter that improve sensor module Measure performance.

7, sensor module provided by the utility model, clump weight can also use heterogeneous material with fluid flow pipe, And be fixedly connected using mechanical system, mechanical means are various, and fixation is more flexible, and can reduce the ring caused by welding Border is polluted and human injury.

8, sensor module provided by the utility model, by by clump weight on the non-vibration pipeline far from vibration pipeline The root of root (junction for vibrating pipeline and non-vibration pipeline) setting, clump weight distance vibration pipeline is remoter, vibrating tube The vibration isolating effect of road and non-vibration pipeline is better, is arranged by this kind, can in the case where ensureing the certain metering performance of sensor module Using the clump weight of small quality, to have saved material, reduce cost.

9, sensor module provided by the utility model is connected by fluid input lines in its fluid input and first It is equipped with the basic rectification pipeline in serpentine between end, has carried out rectification to entering the fluid before vibrating pipeline so that enter and shake The velocity field of dynamic pipeline substantially without non-central offset the problem of.In addition, the serpentine rectification pipeline of the utility model is not only real The effect that rectification is carried out to entering the fluid before vibrating pipeline is showed, and since serpentine rectification pipeline includes two radians The corner bevelling arc that angle is 90 degree so that the fluid flow direction of the fluid input of fluid input lines is hung down with fluid flow direction in vibration pipeline Directly, the fluid input is horizontally oriented, and vibration pipeline is in vertical direction, this is also coriolis mass flowmeters The basic demand of fluid flow pipe.

10, sensor module provided by the utility model, since it is an integral molding structure, compared to shunting The double loop pipeline of structure is not only easier to implement welding, but also can reduce required welding operation, reduces welding and makes At fluid flow pipe distortion.

Description of the drawings

Can be more clearly understood the feature and advantage of the utility model by reference to attached drawing, attached drawing be schematically without It is interpreted as carrying out any restrictions to the utility model, in the accompanying drawings：

Fig. 1 is the contour structures view of the coriolis mass flowmeters of the utility model；

Fig. 2 is the shell structure view for the coriolis mass flowmeters for being prescinded a part；

Fig. 3 is the topology view according to the coriolis mass flowmeters of the utility model of Fig. 2 middle casing structures；

Fig. 4 is the topology view of the fluid flow pipe of the coriolis mass flowmeters of the utility model；

Fig. 5 is the topology view of the coriolis mass flowmeters of another embodiment of the utility model；

Fig. 6 is the topology view of the fluid flow pipe of the coriolis mass flowmeters of another embodiment of the utility model；

Fig. 7 is the outstanding structural schematic diagram dragged of the coriolis mass flowmeters of the utility model.

Reference numeral：

1- upstream line connectors；2- downstream line connectors；3- shells；31- upstream joints are open；32- downstream taps are open； 4- fluid flow pipes；41- fluid input lines；411- levels input pipeline section；The first curved arcs of 412-；The second curved arcs of 413-；414- Turn to curved arc；42- fluid outlet lines；421- horizontal output pipeline sections；47- vibrates pipeline；48- non-vibration pipelines；5- first every Shake part；The second vibration pieces of 6-；7- weightening structures；71- is outstanding to be dragged；711- first through hole；The second through-holes of 712-；713- third through-holes； 714- fourth holes；715- fifth holes；The 6th through-holes of 716-；72- clump weights.

Specific implementation mode

The embodiments of the present invention are described in detail below in conjunction with attached drawing.

As shown in Figs 1-4, a kind of coriolis mass flowmeters are present embodiments provided comprising upstream line connector 1, Downstream line connector 2, shell 3, fluid flow pipe 4, exciting bank, detection device, vibration insulation structure and weightening structure 7.Wherein, The fluid flow pipe 4 is installed in the shell 3, and isolation mounting is installed in fluid flow pipe 4 to divide fluid flow pipe 4 It is divided into vibration pipeline 47 and non-vibration pipeline 48, exciting bank and detection device, exciting bank are also equipped in fluid flow pipe 4 For driving vibration pipeline 47 to vibrate, in fluent material ingress pipe, it is allowed to the flow forward along pipe, then vibrating tube is by forced stream Body vibration in conjunction, fluid can give vibration pipeline 47 1 vertical with its flow direction to revolt this forced vibration Reaction force, fluid inlet section pipe and fluid outlet section pipe can be variant in the time order and function of vibration, and it is poor that this is called phase time, Detection device is then used to detect that the phase time is poor, so that it is determined that flowing through the mass flow of fluid flow pipe 4.The shell 3 Both sides form be adapted to the upstream line connector outer contour shape upstream joints opening 31, and with the downstream line Connector outer profile adaptation downstream tap opening 32, the upstream line connector 1, downstream line connector 2 respectively with the shell 3 Upper corresponding upstream joints opening 31, downstream tap opening 32 are welded to connect.In the present embodiment, exciting bank is arranged described Vibrating tube road, for driving the vibration pipeline vibration；Detection device is arranged on the vibrating tube road, described for detecting Vibrate the relative velocity of pipeline；Weightening structure is set on the non-vibration pipeline；The exciting bank, the vibration pipeline and institute It states detection device and constitutes the oscillating component；The weightening structure, the non-vibration pipeline constitute the non-vibration part.Specifically , the exciting bank includes the driving coil being arranged at the intermediate position of two loops of the vibration pipeline；The detection Device include be arranged it is described vibration pipeline two loops top section corresponding corner portion the first detection sensor and Second detection sensor.

As shown in figure 4, in the present embodiment, the flowmeter has the upstream line connector for connecting upstream fluid pipeline With the downstream line connector for connecting downstream fluid pipeline, the axis of the upstream line connector and the downstream line connector On same central axes, the sensor module is installed in the shell of the flowmeter comprising passes through vibration insulation structure point The oscillating component made of and non-vibration part, the vibration insulation structure is included at least is separated into vibrating tube by the fluid flow pipe First vibration piece on road and non-vibration pipeline, first vibration piece are arranged close to the central axes.First vibration piece position The vertical range of top in the central axes, first vibration piece and the central axes is 0-20mm.It is further preferred that The vertical range of first vibration piece and the central axes is 0-10mm.As the preferred embodiment in the utility model, this implementation The first vibration piece in example is 5mm at a distance from central axes, but the utility model is not limited to 5mm, in other embodiments, also Can be 0mm, 1mm, 3mm, 6mm, 10mm, 15mm or 20mm.It should be noted that first vibration piece of the utility model is also The top of central axes can be located at, as shown in Figure 3.By the way that the first vibration piece is arranged close to the central axes so that first every Shake part to the central axes of upstream and downstream pipe joint distance it is shorter, if oscillating component has vibration to leak out, then in vibration isolation piece The distance of the exciting force of upper formation to the axis of upstream and downstream link position is also shorter, will not generate and turn because of the bias of exciting force It is dynamic.

In the present embodiment, the center of gravity of the sensor module is generally on the central axes.By by sensor module Center of gravity generally on the central axes so that when vibration, which occurs, in oscillating component to leak, since the center of gravity of sensor module is most Amount is returned to reduce sensor around the axis of upstream and downstream link position close to or on the central axes of upstream and downstream pipe joint Turn radius.Therefore, no matter the oscillating component of sensor leaks because which kind of reason generates vibration, is all difficult to cause entire sensor Non-vibration part vibrates, and improves the stability of flowmeter.

Further, the oscillating component and the non-vibration part are relative to the horizontal line residing for first vibration piece Moment difference be the oscillating component to the horizontal moment values 0-20%.It is arranged by this kind so that if vibration section When the raw vibration of distribution leaks, due to oscillating component the first vibration piece opposite with non-vibration part horizontal moment difference compared with It is small, it can offset substantially, be conducive to the stability for improving flowmeter.

It is the core technology scheme of the utility model above, in the following, by the Coriolis matter in conjunction with attached drawing to the present embodiment Each section of amount flowmeter describes in detail.

First, the fluid flow pipe of the present embodiment 4 is introduced.

As shown in figure 3, the fluid flow pipe 4 of the present embodiment has for being connect with upstream line connector 1 to receive fluid The fluid input lines 41 of material, for connect with downstream line connector fluid outlet line 42 to export fluent material and The dual loop piping being connected between the fluid input lines 41 and the fluid outlet line 42.The dual loop tube The second loop that road includes the first loop being connect with the fluid input lines 41, is connect with the fluid outlet line 42, And it is connected to the crossover line between the first loop and the second loop, first loop is parallel with second loop to be set It sets, the plane residing for specially described first loop is parallel with the plane residing for second loop.

By foregoing description it is found that the fluid flow pipe 4 of the present embodiment is a kind of double-tube type fluid flow pipe 4, it is integrated It is molded pipeline, there is advantage identical with double-tube type fluid hose in the prior art, also, the fluid flow pipe 4 of the present embodiment Since it is the dual loop piping being arranged in series, as one pipe by unique pipeline around to being formed by double loop, because This its there is no flow dividing structure, disclosure satisfy that cannot have in the technical field of flow dividing structure coriolis mass flowmeters requirement, Such as hygiene-type coriolis mass flowmeters.Since fluid flow pipe 4 does not have flow dividing structure, do not have to implement flow dividing structure Welding operation, therefore compared with the prior art in flow dividing structure double-tube type fluid flow pipe 4, the fluid stream of the present embodiment Dynamic pipe 4 is easier to implement welding, and can reduce required welding operation.

As shown in figure 4, the both ends of the fluid flow pipe 4 are separately connected upstream line connector 1 and downstream line connector 2, It includes fluid input lines 41, concatenated dual ring successively that its concrete structure, which is from upstream line connector 1 to downstream line connector 2, Road pipeline and fluid outlet line 42.One end of the fluid input lines 41 is fluid input, and the other end is the first company Connect end；One end of the fluid outlet line 42 is fluid exit, and the other end is second connection end；The dual loop connection Between first connecting pin and second connection end.

As shown in figure 4, in the present embodiment, being equipped with vibration insulation structure in the fluid flow pipe 4, passing through vibration insulation structure The vibration pipeline 47 and the non-vibration pipeline 48 under vibration insulation structure being separated on vibration insulation structure.Due to fluid Angled setting between input and output direction and vibration pipeline 47, therefore fluid is entering the first loop before vibrating pipeline 47 One section of steering curved arc 414 is certainly existed on pipeline, and just because of the presence for turning to curved arc 414 so that fluid is by turning to When curved arc 414, fluid inside slows down, and lateral fluid speedup, fluid flow rate center is moved outward, is similar to parabolical flow velocity Distribution, fluid can be thrown to the outside of curved arc in turning because of centrifugal force.Therefore, the fluid of vibration pipeline 47, flow velocity are flowed into Field distribution is the parabola of bias, leads to the change for vibrating 47 sensitivity of pipeline, influences the measurement performance for vibrating pipeline 47.

In order to solve defect existing for above-mentioned fluid flow pipe 4, as shown in figure 3, the stream of the fluid flow pipe 4 of the present embodiment Body intake line 41 is equipped with the basic rectification pipeline in serpentine between its fluid input and the first connecting pin, and the serpentine is whole It includes bending towards opposite the first curved arc 412 and the second curved arc 413, first curved arc 412 that flow tube curb, which fluid flow direction, It is arranged close to the fluid input, second curved arc 413 is arranged close to first connecting pin.Second curved arc 413 Bend towards with it is described to turn to bending towards for curved arc 414 identical, the second curved arc 413 and to turn to curved arc 414 be to right bended arc described the One curved arc 412 is curved arc to the left.Bias on the right side of curved arc can occur for fluid fluid flow fields when by the first curved arc 412, so Rectification is carried out by the second curved arc 413 and steering curved arc 414 so that fluid flow fields are entering vibration pipeline by three curved arcs afterwards In the case of being substantially at non-central offset when 47, the uniformity of fluid flow fields is improved.The present embodiment passes through defeated in fluid Entering to be arranged on pipeline 41 serpentine rectification pipeline realizes the fluid progress rectification that pipeline 47 is vibrated to entering so that enters vibration Evenly, this is conducive to the measurement performance for improving vibration pipeline 47 to velocity field in pipeline 47.

Preferably, first curved arc 412, the second curved arc 413 and steering curved arc 414 are the corner bevelling that radian is 90 degree Arc.In the present embodiment, the bent arc radius of second curved arc 413 is equal with the steering bent arc radius of curved arc 414, described The bent arc radius of first curved arc 412 is equal to the half of 413 radius of the second curved arc.This kind of pipeline uniqueness around to not Only realize the effect that rectification is carried out to entering the fluid before vibrating pipeline 47, and the first curved arc 412, the second curved arc 413 And turn to curved arc 414 and carried out 90 degree steerings respectively so that the fluid of the fluid input of fluid input lines 41 flow to and Vibrating fluid flow direction in pipeline 47, vertically, the fluid input is horizontally oriented, and vibration pipeline 47 is in vertical direction, this It is also the basic demand of the fluid flow pipe 4 of coriolis mass flowmeters.As the preferred embodiment in the utility model, this implementation The first curved arc 412 and the second curved arc 413 of the fluid input lines 41 of example be two and continuously bend towards opposite curved arc, and second Curved arc 413 is also to be directly connected to curved arc 414 is turned to.That is, the present embodiment is entirely to be realized by curved arc structure Rectification effect.As the preferred embodiment of the utility model, the fluid outlet line 42 exists with the fluid input lines 41 Mirror image is arranged in horizontal direction, i.e., a serpentine pipeline also is provided on the fluid outlet line 42, this kind is arranged so that fluid Flow duct 4 is a symmetrical structure in the horizontal direction in the shell 3 of coriolis mass flowmeters.

The fluid input lines 41 of the present embodiment further include the horizontal input pipeline section being connect with upstream fluid pipeline 411, fluid outlet line 42 further includes the horizontal output pipeline section 421 being connect with downstream fluid pipeline, the horizontal input pipeline section 411 are located at the horizontal output pipeline section 421 on same axis.But the utility model is not limited to be located on same axis, In other embodiment, the horizontal input pipeline section 411 can also be in same level but not with horizontal output pipeline section 421 On the same axis.

In the present embodiment, one kind in the material selection stainless steel, Hastelloy, titanium alloy of the fluid flow pipe 4.

As a kind of mode of texturing of the utility model rectifying tube, the fluid input lines 41 include that setting is curved first Straight line pipeline between straight line pipeline and the second curved arc 413 between arc 412 and the second curved arc 413 and steering curved arc 414, Two straight line pipelines can also play the role of to fluid rectification, i.e. uniform flow field；In view of two rectilinear tubes Road also plays rectified action, in order to ensure that the fluid flow rate for entering vibration pipeline 47 is uniform, the curved arc of first curved arc 412 Radius be less than second curved arc 413 bent arc radius half, the bent arc radius of second curved arc 413 with described turn Bent arc radius to curved arc 414 is equal.

It should be noted that one of them can also be only arranged in above-mentioned two straight line pipeline, when only there are one straight line pipelines When, need the bent arc radius to the first curved arc 412 to be adjusted, but the bent arc radius of the first curved arc 412 is still less than The half of two curved arcs, 413 radius.

As a kind of mode of texturing of the utility model rectifying tube, first curved arc 412, the second curved arc 413 and turn Can also be the changed not rounded curved arc of curvature to curved arc 414, the difficulty of processing of fluid flow pipe 4 can add in the case of this kind Greatly, but can still play the role of carrying out rectification to the fluid for entering vibration pipeline 47.

Then, the weightening structure 7 of the present embodiment is introduced.

As shown in figure 4, the weightening structure 7 of the present embodiment is fixedly mounted at the clump weight on the non-vibration pipeline 48, One kind in the material selection stainless steel of the clump weight, Hastelloy, titanium alloy, spheroidal graphite cast-iron.Preferably, the clump weight It is identical as the material of the fluid flow pipe 4, it is realized and is fixed by welding manner.The welding manner can be soldering or argon One kind in arc-welding.

In the present embodiment, specifically, the clump weight be that level is erected on non-vibration pipeline 48 it is outstanding drag 71, and It is described it is outstanding drag 71 to be symmetrical set in the horizontal direction of the non-vibration pipeline 48, specifically, by this present embodiment Fluid flow pipe 4 is dual loop piping, therefore described outstanding drags the non-of 71 left end and the first loop of left end and the second loop Vibration pipeline 48 is fixedly connected, and described hang drags 71 right end and the non-vibration pipeline 48 of the first loop of right end and the second loop solid Fixed connection.By the setting of clump weight, the weight of the non-vibration part of sensor module is increased, this is conducive to sensor module Oscillating component and non-vibration part be isolated, be conducive to the metering performance for improving sensor module, obtain balanced null point.And Counterweight block structure is simple, handling ease, at low cost, that is to say, that the present embodiment is realized by adding clump weight both Targets Can greatly improve, and increased cost also very little is conducive to marketing and volume production.

In the present embodiment, described outstanding to drag 71 for certain thickness rectangular block, the minimum length and width ruler of the rectangular block The very little length and width dimensions in space formed with 48 outer edge of non-vibration pipeline are consistent.That is, the minimum of the rectangular block Length dimension can not be less than the spacing of the outermost end of left and right sides non-vibration pipeline 48, the minimum width dimension of the rectangular block The spacing of the outermost end of former and later two non-vibration pipelines 48 positioned at the same side can not be less than.Work as coriolis mass flowmeters Temperature in use it is higher when, if it is outstanding drag 71 and fluid flow pipe 4 thermal capacitance it is inconsistent, 71 and fluid flow pipe can be dragged outstanding Stress is directly deformed between 4, to influence performance；And the present embodiment passes through above-mentioned setting so that it is outstanding drag 71 thermal capacitance with The thermal capacitance of fluid flow pipe 4 is almost the same, to ensure performance.

As the preferred embodiment of the utility model, the thickness of the rectangular block is outer with the single non-vibration pipeline 48 Caliber is equal.But the utility model is not limited to equal, in other embodiments, the thickness of the rectangular block can also be single 0.5 times, 0.8 times, 1.2 times or 1.5 times of the outer tube diameter of non-vibration pipeline 48.

In the present embodiment, described hang drags 71 root far from the vibration pipeline 47 on the non-vibration pipeline 48 to set Set, analyzed by theory of vibration isolation, in the case where reaching identical metering performance, it is described it is outstanding drag 71 on non-vibration pipeline 48 distance The root position of the vibration pipeline 47 is remoter, and the outstanding quality for dragging 71 of use is smaller, also more material saving.Specifically, in this reality It applies in example, it is described outstanding to drag 71 on the non-vibration pipeline 48 at a distance from 47 root of vibration pipeline to account for the non-vibration pipeline 48 perpendicular The 50% of straight development length.But the utility model is not limited to 50%, in other embodiments, described outstanding to drag 71 in the non-vibration Accounted at a distance from vibration pipeline 47 root on pipeline 48 the 30% of the 48 vertical development length of non-vibration pipeline either 40% or 45%.

As shown in fig. 7, described hang drags 71 to be symmetrical arranged in the horizontal direction relative to the fluid flow pipe 4.According to stream Flow direction of the body material in the fluid flow pipe 4, described hang drag 71 to be equipped with the first through hole worn for first loop 711, the second through-hole 712 and third through-hole 713, and equipped with fourth hole 714, the fifth hole worn for second loop 715 and the 6th through-hole 716, wherein the second through-hole 712 and third through-hole 713 setting of first loop outstanding drag 71 described It the left and right sides of back edge and is symmetrical arranged, the fourth hole 714 and fifth hole 715 of second loop are arranged described It is outstanding to drag the left and right sides of 71 front edges and be symmetrical arranged, the first through hole 711 of first loop and the 6th of the second loop the Through-hole 716 is between other through-holes and is symmetrical set.Sensor module is symmetrical structure, is conducive to obtain better meter Measure performance.

The present embodiment adjusts the center of gravity of sensor module by the way that weightening structure 7 is arranged on non-vibration pipeline, improves Vibrational state reduces non-vibration pipeline and vibrates the vibration coupling of pipeline；And the structure that increases weight 7 and its non-vibration pipeline 48 with The shell of coriolis mass flowmeters does not contact so that non-rigid between the non-vibration part of sensor module and flowmeter shell Property connection, this is conducive to improve vibration isolation effect, is conducive to flowmeter and obtains stable zero and excellent metering performance.

In the present embodiment, the fluid input lines 41 and fluid outlet line 42 of the fluid flow pipe 4 are respectively welded In upstream line connector and downstream line connector to realize the fixation of fluid flow pipe.

A kind of mode of texturing of weightening structure 7 as the present embodiment, as shown in figure 5, the clump weight can also be point Body structure is equipped with one piece of sub- clump weight 72 on the non-vibration pipeline 48 of the left and right sides, which is fixedly mounted It is symmetrical arranged on two non-vibration pipelines 48 positioned at homonymy, and relative to two non-vibration pipelines 48；Positioned at not homonymy Two sub- clump weights 72 in 48 horizontal direction of non-vibration pipeline be symmetrical arranged.

A kind of mode of texturing for the structure 7 that increases weight as the present embodiment, as shown in fig. 6, the weightening structure 7 can also pass through The mode of non-clump weight realizes weightening, for example, the weightening structure 7 be non-vibration pipeline 48 towards with vibration 47 phase negative side of pipeline To the extension pipeline of extension.The work of the non-vibration part weightening of sensor module can be also realized by the extension of non-vibration pipeline 48 With.

The vibration insulation structure of the present embodiment is introduced.

As shown in figures 3 to 6, the vibration insulation structure includes being welded in the fluid flow pipe 4 to flow the fluid Pipe 4 be divided into the first vibration piece 5 of vibration pipeline 47 and non-vibration pipeline 48 and positioned at the lower section of first vibration piece 5 second Vibration piece 6, first vibration piece, 5 and second vibration piece 6 are the piece for being equipped with the through-hole passed through for 4 tunnel of fluid flow pipe Shape structure, first vibration piece, 5 and second vibration piece 6 are welded to connect by the through-hole and the fluid flow pipe 4.

It should be noted that the first vibration isolation piece, the second vibration isolation piece are not limited to weld with the mode that is fixedly connected of fluid flow pipe 4 It connects, can also be fixed using mechanical connection manner.

The quantity of the vibration piece is also not necessarily limited to two, in other embodiments, can also be in the lower section of the second vibration piece 6 Third vibration piece or even the 4th vibration piece are set.

Although being described in conjunction with the accompanying the embodiment of the utility model, those skilled in the art can not depart from Various modifications and variations can be made in the case of the spirit and scope of the utility model, and such modifications and variations are each fallen within by appended Within claim limited range.

Claims

1. a kind of coriolis mass flowmeters sensor module, which is characterized in that the flowmeter has for connecting Swim the upstream line connector of fluid line and the downstream line connector for connecting downstream fluid pipeline, the upstream line connector It is located on same central axes with the axis of the downstream line connector, the sensor module is installed on the shell of the flowmeter It is interior comprising the oscillating component being separated by vibration insulation structure and non-vibration part, the vibration insulation structure are included at least institute The first vibration piece that fluid flow pipe is separated into vibration pipeline and non-vibration pipeline is stated, first vibration piece is close to the axis Line is arranged.

2. coriolis mass flowmeters sensor module according to claim 1, which is characterized in that described first every The part that shakes is located above or below the central axes, and the vertical range of first vibration piece and the central axes is 0-20mm.

3. coriolis mass flowmeters sensor module according to claim 2, which is characterized in that described first every The vertical range of part and the central axes of shaking is 0-10mm.

4. sensor module according to claim 1, which is characterized in that the oscillating component and non-vibration part phase Moment difference for the central axes is 0-20% of the oscillating component to the central axes moment values.

5. sensor module according to claim 4, which is characterized in that the oscillating component and non-vibration part phase It is 0 for the horizontal moment difference residing for first vibration piece.

6. sensor module according to any one of claims 1-5, which is characterized in that including

Fluid flow pipe has fluid input lines and fluid outlet line and is connected on the fluid input lines and fluid Dual loop piping between output pipe；The dual loop piping is divided into vibration pipeline and non-by the vibration insulation structure Vibrate pipeline；

Increase weight structure, is arranged on the non-vibration pipeline；

The exciting bank, the vibration pipeline and the detection device constitute the oscillating component；It is the weightening structure, described Non-vibration pipeline constitutes the non-vibration part.

7. sensor module according to claim 6, which is characterized in that the dual loop piping includes and the fluid First loop of intake line connection, the second loop for being connect with the fluid output tube, the plane residing for first loop Parallel with the plane residing for the second loop, first loop is connect with second loop by crossover line.

8. sensor module according to claim 6, which is characterized in that the exciting bank includes being arranged in the vibration The driving coil at the intermediate position of two loops of pipeline；And/or the detection device includes being arranged in the vibration pipeline The first detection sensor and the second detection sensor of the corresponding corner portion of the top section of two loops.

9. sensor module according to claim 7, which is characterized in that the weightening structure is described non-to be fixedly mounted on The clump weight of vibrating tube road.

10. sensor module according to claim 9, which is characterized in that the material of the fluid flow pipe be stainless steel, One kind in Hastelloy, titanium alloy；And/or the material of the clump weight is stainless steel, Hastelloy, titanium alloy, spheroidal graphite casting One kind in iron.

11. sensor module according to claim 9, which is characterized in that the clump weight is on the non-vibration pipeline The 30%-50% of the vertical development length of non-vibration pipeline is accounted at a distance from the vibration pipeline root.

12. sensor module according to claim 9, which is characterized in that the clump weight is erected at described non-for level The outstanding support of vibrating tube road, and the outstanding support is symmetrical set in the horizontal direction of the non-vibration pipeline.

13. sensor module according to claim 12, which is characterized in that the outstanding support is with certain thickness rectangle Block.

14. sensor module according to claim 13, which is characterized in that the minimum length and width dimensions of the rectangular block and institute The bulk for stating the formation of non-vibration pipeline outer edge is consistent.

15. sensor module according to claim 13, which is characterized in that the thickness of the rectangular block is the non-vibration 0.5-1.5 times of the single conduit outer diameter of pipeline.

16. sensor module according to claim 15, which is characterized in that the thickness of the rectangular block is the non-vibration 1 times of the single conduit outer diameter of pipeline.

17. according to the sensor module described in any one of claim 12-16, which is characterized in that according to fluent material in institute The flow direction in fluid flow pipe is stated, the outstanding support is equipped with first through hole, the second through-hole and the third worn for first loop Through-hole, and equipped with fourth hole, fifth hole and the 6th through-hole worn for second loop, wherein first ring Second through-hole and third through-hole on road are arranged in the left and right sides of the outstanding support back edge and are symmetrical arranged, second loop Fourth hole and fifth hole be arranged it is described it is outstanding support front edge the left and right sides and be symmetrical arranged, first loop 6th through-hole of first through hole and the second loop between other through-holes and is symmetrical set.

18. a kind of coriolis mass flowmeters, including：

Shell；

Sensor module is installed on the enclosure interior；

It is characterized in that, the sensor module is the sensor module described in any one of claim 1-17.