CN207741812U - Coriolis mass flowmeters and its sensor module - Google Patents

Abstract

The utility model discloses a kind of coriolis mass flowmeters and its sensor module, sensor module includes：Fluid flow pipe, with fluid input lines and fluid outlet line and the dual loop piping being connected between input, output pipe；Vibration insulation structure is arranged on the dual loop piping so that the dual loop piping is divided into vibration pipeline and non-vibration pipeline；Increase weight structure, is arranged on the non-vibration pipeline, the weightening structure and the non-vibration pipeline are not contacted with the shell.The utility model adjusts the center of gravity of sensor module by the way that weightening structure 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 and non-vibration pipeline are not contacted with flowmeter shell so that are not rigid connections between the non-vibration part of sensor module and flowmeter shell, are conducive to vibration isolation effect, are conducive to flowmeter and obtain stable zero and excellent metering performance.

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 П 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 П 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 П 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-П 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 П 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.From the point of view of the full text of the patent document, fix The main function of connecting component is：1, double loop is securely attached on shell by the way of melting welding；2, using suitable Big quality reduces small distortion of the melting welding to fixed connecting part, reduces influence of the distortion to double loop；3, pass through setting Fixed connecting part, realize the oscillating component of flowmeter and flowmeter install to fluid stream by the road on non-vibration be partially separated It opens.

However, there are still following defects in actual use for coriolis mass flowmeters disclosed in the patent document：It is right The small distortion caused by melting welding, the patent document can only reduce the influence of distortion by the way of sizable quality, but not It can completely eliminate, and since fixed connecting part and housing base are directly welded together, and housing base and shell Lid is similarly made using relatively thicker material, and is equally linked together using melting welding mode, therefore, is fixedly connected with portion Part is to be rigidly connected with entire shell, is analyzed by theory of vibration isolation, limited to the centrifugation of vibration, to be difficult to Obtain stable zero and metering performance.

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 Coriolis flowmeter sensor component oscillating component and the effect of the Separation by vibration of non-vibration part limited cause to be difficult in technology Obtain the defect of stable zero and metering performance.

For this purpose, in a first aspect, the utility model provides a kind of coriolis mass flowmeters sensor module, installation In in the shell of the flowmeter, the 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；

Vibration insulation structure, be arranged on the dual loop piping with by the dual loop piping be divided into vibration pipeline and Non-vibration pipeline；

Increase weight structure, is arranged on the non-vibration pipeline, the weightening structure and the non-vibration pipeline and the shell Body does not contact.

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 fluid flow pipe is fixedly connected with the clump weight using welding or mechanical connection manner.

Preferably, described to be welded as soldering or argon arc welding.

Preferably, the mechanical connection is to be bolted.

Preferably, the fluid flow pipe is identical with the material of the clump weight.

Preferably, root setting of the clump weight far from the vibration pipeline on the non-vibration pipeline.

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 overall length of dynamic pipeline.

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

Preferably, described hang is dragged as 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 clump weight be that level is erected on the non-vibration pipeline it is outstanding drag, and described outstanding drag described The asymmetric setting of horizontal direction of non-vibration pipeline.

Preferably, the clump weight includes the sub- clump weight being separately positioned on the non-vibration pipeline of the left and right sides, both sides The sub- clump weight be symmetrical arranged in the horizontal direction.

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 fluid input tube has the horizontal input pipeline section being connect with upstream fluid pipeline, the fluid defeated Outlet pipe has the horizontal output pipeline section being connect with downstream fluid pipeline, the horizontal input pipeline section and the horizontal output tube section In on same axis.

Preferably, described hang is dragged under the axis.

Preferably, the flow direction according to fluid in the fluid flow pipe, outstanding drag are worn equipped with confession first loop If first through hole, the second through-hole and third through-hole, and equipped with fourth hole, the fifth hole worn for second loop With the 6th through-hole, wherein the second through-hole and third through-hole of first loop are arranged in the left and right of the outstanding end margin of delaying It both sides and is symmetrical arranged, the fourth hole and fifth hole of second loop are arranged in the outstanding left and right two for dragging front edge It side and is symmetrical arranged, the first through hole of first loop and the 6th through-hole of the second loop are positioned at other through-holes between and control It is symmetrical arranged.

Preferably, the weightening structure is that the non-vibration pipeline prolongs towards with what the vibration pipeline opposite direction extended Long pipe runs.

Preferably, the vibration insulation structure includes at least a pair of of the vibration isolation piece being arranged on the non-vibration pipeline of the left and right sides.

Preferably, the vibration insulation structure includes two pairs of vibration isolation pieces, is spaced and sets on the vertical pipeline of the non-vibration pipeline It sets.

Preferably, the fluid flow pipe is integrally formed pipeline.

Preferably, the fluid input lines are in " S " type substantially, include being arranged and bending towards opposite along fluid flow direction First curved arc and the second curved arc.

Preferably, first curved arc and the second curved arc are corner bevelling arc.

Preferably, the bent arc radius of first curved arc is not more than the half of second bent arc radius

Preferably, the fluid input lines further include be arranged between first curved arc and second curved arc and/ Or the rectilinear tubes between second curved arc and the dual loop piping.

Preferably, the fluid outlet line is arranged with the fluid input lines mirror symmetry.

Second aspect, the utility model additionally provide a kind of coriolis mass flowmeters, including：

Shell；

Sensor module is installed on the enclosure interior；

The sensor module is the sensor component.

Preferably, further include being fixedly installed with the shell and positioned at the upstream line of the horizontal direction both sides of the shell Connector and downstream line connector, the upstream line connector are coaxially disposed with the downstream line connector；The upstream line connects First end is connect by the road with upstream flow, and the other end is connect with the fluid input lines；Downstream line connector one end with Downstream fluid pipeline connects, and the other end is connect with the fluid outlet line.

The advantages of the utility model：

1, 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.

2, 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.

3, 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.

4, 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.

5, 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.

6, 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 flowed to fluid in vibration pipeline Vertically, the fluid input is horizontally oriented, and vibration pipeline is in vertical direction, this is also coriolis mass flowmeters Fluid flow pipe basic demand.

7, 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-；413- second Curved arc；414- turns to curved arc；42- fluid outlet lines；421- horizontal output pipeline sections；47- vibrates pipeline；48- non-vibration pipes Road；

The first vibration pieces of 5-；

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- four-ways Hole；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 with by fluid flow pipe 4 It is divided into vibration pipeline 47 and non-vibration pipeline 48, exciting bank and detection device is also equipped in fluid flow pipe 4, encourages Device is for driving vibration pipeline 47 to vibrate, and in fluent material ingress pipe, is allowed to the flow forward along pipe, then vibrating tube will be strong Compel fluid vibration in conjunction, fluid can give vibration pipeline 47 1 to hang down with its flow direction to revolt this forced vibration Straight reaction force, fluid inlet section pipe and fluid outlet section pipe can be variant in the time order and function of vibration, when this is called phase Between it is poor, 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 The both sides of body 3 form be adapted to the upstream line connector outer contour shape upstream joints opening 31, and with it is described under Swim pipe joint outer profile adaptation downstream tap opening 32, the upstream line connector 1, downstream line connector 2 respectively with institute Corresponding upstream joints opening 31, downstream tap opening 32 on shell 3 is stated to be welded to connect.In the following, in conjunction with attached drawing to the present embodiment Each sections of coriolis mass flowmeters be introduced.

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 connects It is connected 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 stream Speed distribution, fluid can be thrown to the outside of curved arc in turning because of centrifugal force.Therefore, the fluid of vibration pipeline 47, stream are flowed into Fast 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 vibrating tube by three curved arcs afterwards In the case of being substantially at non-central offset when road 47, the uniformity of fluid flow fields is improved.The present embodiment passes through in fluid Serpentine rectification pipeline is arranged on intake line 41 realizes the fluid progress rectification that pipeline 47 is vibrated to entering so that enters and shakes Evenly, this is conducive to the measurement performance for improving vibration pipeline 47 to velocity field in dynamic 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 reality It applies the first curved arc 412 of the fluid input lines 41 of example and the second curved arc 413 is two and continuously bends 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 be entirely by curved arc structure come Realize rectification effect.As the preferred embodiment of the utility model, the fluid outlet line 42 and the fluid input lines 41 in the horizontal direction mirror image be arranged, i.e., also be provided with a serpentine pipeline on the fluid outlet line 42, this kind be arranged so that Fluid flow pipe 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, described hang drags 71 to account for the non-vibration pipeline 48 at a distance from 47 root of vibration pipeline on the non-vibration pipeline 48 The 50% of vertical development length.But the utility model is not limited to 50%, in other embodiments, described outstanding to drag 71 described non- On vibration pipeline 48 the 30% or 40% of the 48 vertical development length of non-vibration pipeline is accounted at a distance from 47 root of vibration pipeline 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 non-vibration part weightening of sensor module can be also realized by the extension of non-vibration pipeline 48 Effect.

Finally, 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 (31)

1. a kind of coriolis mass flowmeters sensor module, is installed in the shell of the flowmeter, which is characterized in that The sensor module includes：

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；

Vibration insulation structure is arranged on the dual loop piping so that the dual loop piping is divided into vibration pipeline and non-is shaken Dynamic pipeline；

Increase weight structure, is arranged on the non-vibration pipeline, and the weightening structure and the non-vibration pipeline and the shell are not Contact.

2. sensor module according to claim 1, which is characterized in that the weightening structure is described non-to be fixedly mounted on The clump weight of vibrating tube road.

3. sensor module according to claim 2, 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.

4. sensor module according to claim 3, which is characterized in that the fluid flow pipe is used with the clump weight Welding or mechanical connection manner are fixedly connected.

5. sensor module according to claim 4, which is characterized in that described to be welded as soldering or argon arc welding.

6. sensor module according to claim 4, which is characterized in that the mechanical connection is to be bolted.

7. according to the sensor module described in any one of claim 2-6, which is characterized in that the fluid flow pipe and described The material of clump weight is identical.

8. according to the sensor module described in any one of claim 2-6, which is characterized in that the clump weight non-shakes described Root setting far from the vibration pipeline on dynamic pipeline.

9. sensor module according to claim 8, which is characterized in that the clump weight on the non-vibration pipeline with The distance of the vibration pipeline root accounts for the 30%-50% of the vertical development length overall length of the non-vibration pipeline.

10. according to the sensor module described in any one of claim 2-6, which is characterized in that the clump weight is level frame Be located on the non-vibration pipeline it is outstanding drag, and described outstanding the horizontal direction in the non-vibration pipeline is dragged to be symmetrical set.

11. sensor module according to claim 10, which is characterized in that described hang is dragged as with certain thickness rectangle Block.

12. sensor module according to claim 11, 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.

13. sensor module according to claim 11, 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.

14. sensor module according to claim 13, 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.

15. sensor module according to claim 10, which is characterized in that the clump weight is erected at described non-for level The outstanding of vibrating tube road drags, and the outstanding asymmetric setting of horizontal direction dragged in the non-vibration pipeline.

16. according to the sensor module described in any one of claim 2-6, which is characterized in that the clump weight includes difference Sub- clump weight on the non-vibration pipeline of the left and right sides is set, and the sub- clump weight of both sides is symmetrical arranged in the horizontal direction.

17. sensor module according to claim 10, which is characterized in that the dual loop piping includes and the stream First loop of body intake line connection, the second loop for being connect with the fluid output tube, putting down residing for first loop Face is parallel with the plane residing for the second loop, and first loop is connect with second loop by crossover line.

18. sensor module according to claim 17, which is characterized in that the fluid input tube has and upstream fluid The horizontal input pipeline section of pipeline connection, the fluid output tube have the horizontal output pipeline section being connect with downstream fluid pipeline, institute Horizontal input pipeline section is stated with the horizontal output tube section to be located on same axis.

19. sensor module according to claim 18, which is characterized in that described hang is dragged under the axis.

20. sensor module according to claim 17, which is characterized in that according to fluid in the fluid flow pipe Flow direction, described hang drag first through hole, the second through-hole and third through-hole equipped with being worn for first loop, and equipped with for institute State fourth hole, fifth hole and the 6th through-hole that the second loop is worn, wherein the second through-hole and third of first loop Through-hole is arranged in the left and right sides of the outstanding end margin of delaying and is symmetrical arranged, and the fourth hole of second loop and the 5th leads to Hole is arranged in the outstanding left and right sides for dragging front edge and arranged symmetrically, first through hole and the second loop of first loop The 6th through-hole between other through-holes and be symmetrical set.

21. sensor module according to claim 1, which is characterized in that the weightening structure is the non-vibration pipeline Towards the extension pipeline extended with the vibration pipeline opposite direction.

22. according to the sensor module described in any one of claim 1-6, which is characterized in that the vibration insulation structure is included in At least a pair of of the vibration isolation piece being arranged on the non-vibration pipeline of the left and right sides.

23. sensor module according to claim 22, which is characterized in that the vibration insulation structure includes two pairs of vibration isolation pieces, Setting is spaced on the vertical pipeline of the non-vibration pipeline.

24. according to the sensor module described in any one of claim 1-6, which is characterized in that the fluid flow pipe is one Body formed pipeline.

25. according to the sensor module described in any one of claim 1-6, which is characterized in that the fluid input tube roadbed This is in " S " type, includes being arranged along fluid flow direction and bending towards opposite the first curved arc and the second curved arc.

26. sensor module according to claim 25, which is characterized in that first curved arc and the second curved arc are circle Curved arc.

27. sensor module according to claim 26, which is characterized in that the bent arc radius of first curved arc is not more than The half of second bent arc radius.

28. according to the sensor module described in any one of claim 26-27, which is characterized in that the fluid input lines Further include being arranged between first curved arc and second curved arc and/or second curved arc and the dual loop piping Between rectilinear tubes.

29. according to the sensor module described in any one of claim 1-6, which is characterized in that the fluid outlet line with The fluid input lines mirror symmetry setting.

30. 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 1-29.

31. coriolis mass flowmeters according to claim 30, which is characterized in that further include being fixed with the shell It is arranged and positioned at the upstream line connector and downstream line connector of the horizontal direction both sides of the shell, the upstream line connector It is coaxially disposed with the downstream line connector；Upstream line connector one end is connect by the road with upstream flow, the other end and institute State fluid input lines connection；Downstream line connector one end is connect with downstream fluid pipeline, and the other end and the fluid are defeated Go out piping connection.