CN207585678U - Coriolis mass flowmeters and its sensor module - Google Patents

Abstract

The utility model discloses a kind of coriolis mass flowmeters and its sensor module, flowmeter has to connect the upstream line connector of upstream fluid pipeline and the downstream line connector for connecting downstream fluid pipeline, sensor module include：Fluid flow pipe has fluid input lines and fluid outlet line and the dual loop piping being connected between fluid input lines and fluid outlet line；First vibration piece is fixed on dual loop piping dual loop piping being separated into vibration pipeline and non-vibration pipeline；And connection structure, one end are fixedly connected on non-vibration pipeline, the other end is fixedly connected on upstream line connector and/or downstream line connector, so as to be flexible connection between non-vibration pipeline and corresponding upstream line connector and/or downstream line connector.

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 the coriolis mass flowmeters with the sensor module.

Background technology

Coriolis mass flowmeters are a kind of instrument for directly critically measuring fluid flow.Typical Coriolis matter Flowmeter structure main body is measured using two U-tubes side by side, two pipes with same frequency and reversed-phase under its resonant frequency is allowed to vibrate, i.e., they It can draw close or open simultaneously simultaneously.If while vibrating tube synchronous vibration, direct fluid into pipe, be allowed to along pipe forward Flowing, then vibrating tube will force fluid to vibrate 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 can be variant in the time order and function of vibration with fluid outlet section pipe, and it is poor that this is called phase time.This difference The different size to flowing through the liquid mass flow of vibrating tube is directly proportional.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.

At present, 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 to balanced null point outside, 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 reduce the influence of extraneous vibration interference.

Tubular-shaped structures according to sensor can be roughly divided into Straight and elbow-shaped, and Straight instrument is not easy to stockpile gas, Flow sensor size is small, light-weight.But natural frequency of vibration high RST is not easy to detect, for the natural frequency of vibration is made to be unlikely to too high, often Tube wall is made relatively thin, easily frayed and corrosion.The instrument piping rigidity of elbow-shaped detection pipe is low, and generation signal is relatively large, skill Art also relative maturity.Because the natural frequency of vibration is also low (80-150Hz), thicker tube wall may be used, instrument is wear-resisting, corrosion resistance Preferably, but easily it can stockpile gas and residue causes additive error to be cut to require installation space.

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 due to 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 no 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, from fluid stream by the road from receive input pipe used in fluid Fluid is returned to fluid and flows through the output pipe used in material and surround the housing 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 housing 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：1st, double loop is securely attached on housing by the way of melting welding；2nd, using suitable Big quality reduces small distortion of the melting welding to fixed connecting part, reduces influence of the distortion to double loop；3rd, 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 housing Lid is similarly made, and equally linked together using melting welding mode using relatively thicker material, 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, so as 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 The defects of obtaining stable zero and metering performance.

For this purpose, in a first aspect, the utility model provides a kind of coriolis mass flowmeters sensor module, it is described Flowmeter has to connect the upstream line connector of upstream fluid pipeline and the downstream line for connecting downstream fluid pipeline Connector, the sensor module include：

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；

First vibration piece is fixed on the dual loop piping the dual loop piping being separated into vibration Pipeline and non-vibration pipeline；And

Connection structure, one end are fixedly connected on the non-vibration pipeline, and the other end is fixedly connected on the upstream line On connector and/or downstream line connector, so that the non-vibration pipeline and the corresponding upstream line connector and/or downstream tube It is flexible connection between road connector.

Preferably, the connection structure includes

Tie-beam, relatively described non-vibration pipeline are horizontally disposed with, at least one axial end portion of the tie-beam with it is corresponding The upstream line connector or downstream line connector be fixedly connected；

Second vibration piece, positioned at the lower section of first vibration piece, one end is fixedly connected with the non-vibration pipeline, another End is fixedly connected with the tie-beam.

Preferably, the tie-beam is tubular.

Preferably, the axial both ends of the tie-beam are fixed respectively with corresponding upstream line connector and downstream line connector Connection.

Preferably, tubular tie-beam includes the arc pressuring plate positioned at the fluid flow line front and rear sides, described in two The upper side and lower side of arc pressuring plate is respectively formed first by slot and second by slot, and the fluid flow pipe passes through described One passes through the tubular tie-beam by slot and second by slot.

Preferably, the curved edge at the arc pressuring plate axial direction both ends and the corresponding upstream line connector or downstream The welding surface shape adaptation of pipe joint.

Preferably, the tie-beam is coaxially disposed with the upstream line connector and downstream line connector.

Preferably, the connection structure is to be fixed in fluid flow pipe and below first vibration piece Second vibration piece, second vibration piece have prolonging towards the corresponding upstream line connector and/or downstream line connector Extending portion, the extension are fixedly connected with the corresponding upstream line connector and/or downstream line connector.

Preferably, first vibration piece and the second vibration piece are the through-hole for being equipped with and being passed through for the fluid flow line Laminated structure, first vibration piece and the second vibration piece are fixedly connected by the through-hole with the fluid flow pipe.

Preferably, the upstream line connector and the downstream line connector respectively with the coriolis mass flowmeters Housing be fixedly connected；The other end of the connection structure is fixedly connected on the housing.

Preferably, it is described to be fixedly connected using welding, be mechanically fixed at least one of connection.

Preferably, the fluid input lines and the upstream line fittings, the fluid outlet line with it is described Downstream line fittings.

Preferably, the fluid flow pipe is integrally formed pipeline.

Preferably, the fluid input lines are in " S " type substantially, including setting 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 set with the fluid input lines mirror symmetry.

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

Housing；

Sensor module is installed on the enclosure interior；

The sensor module is the sensor component.

Preferably, it further includes and is fixedly installed with the housing and positioned at the upstream line of the horizontal direction both sides of the housing Connector and downstream line connector, the upstream line connector are coaxially disposed with the downstream line connector；The upstream line connects Head is connect with the fluid input lines of the sensor module, and the fluid of the downstream line connector and the sensor module is defeated Go out pipeline connection.

The advantages of the utility model：

1st, sensor module provided by the utility model, first, fluid flow pipe (4) without flow dividing structure, but by It is configured with the dual loop piping of series connection.This kind of fluid flow pipe (4) be not due to having flow dividing structure so that using the fluid The sensor module of flow duct (4) can be widely applied to the technical field that cannot have flow dividing structure to coriolis flowmeter requirement In, such as hygiene-type coriolis mass flowmeters；Secondly, the sensor module of the utility model is analyzed by theory of vibration isolation, By setting connection structure between non-vibration pipeline and corresponding pipe joint so that between non-vibration pipeline and pipe joint It is compared with the prior art rigid connection, the vibration of the utility model between middle fixed connecting part and housing for flexible connection Isolation effect is more preferable, reduces the degree of coupling of vibration pipeline and non-vibration pipeline, is conducive to flowmeter and obtains stable zero With excellent metering performance.

2nd, sensor module provided by the utility model, connection structure include tie-beam and below the first vibration pieces The second vibration piece, tie-beam is horizontally disposed with relative to non-vibration pipeline, at least one axial end portion of tie-beam with it is corresponding Upstream line connector or downstream line connector are fixedly connected, and one end of the second vibration piece is fixedly connected with non-vibration pipeline, another End is fixedly connected with tie-beam, passes through this kind of connection mode non-vibration pipeline and corresponding upstream line connector or downstream tube Flexible connection is realized between road connector, and when the interference vibrated of non-vibration pipeline, vibration transfer path is non-vibration The-the second vibration piece of pipeline-tie-beam-upstream line connector or downstream line connector, vibration transfer path extend, are conducive to eliminate The influence of vibration interference reduces non-vibration pipeline and vibrates the vibration coupling degree between pipeline, is conducive to obtain flowmeter Balanced null point and good metering performance；Furthermore the connection structure of the utility model takes full advantage of sensor module Central Plains The second vibration piece structure having only carries out the structure of the second vibration piece simply adjustment and the second vibration piece shakes with non- Dynamic pipeline is fixedly connected, simple in structure, handling ease, and production cost is relatively low.

3rd, sensor module provided by the utility model, curved edge and the corresponding pipe at the axial both ends of tubular tie-beam The welding surface shape adaptation of road connector, this facilitate that welding operation, and firm connection structure is easy to get, improve use Service life.

4th, sensor module provided by the utility model, tubular tie-beam are coaxially disposed with upstream and downstream pipe joint, due to In same horizontal line, be conducive to implement welding operation.

5th, sensor module provided by the utility model, connection structure only include be located at the first vibration piece below second every Shake part, and in order to realize being fixedly connected for non-vibration pipeline and corresponding pipe joint, the second vibration piece is formed towards respective tube The extension of road connector, the extension are fixedly connected with corresponding pipe joint, although road is transmitted in the vibration of this kind of connection structure Diameter is shorter, and isolation vibrating effect is compared to poor by the way of tubular tie-beam, but it is tied compared with tubular tie-beam mode Structure is simpler, and production cost is lower.

6th, sensor module provided by the utility model is connected by fluid input lines in its fluid input and first The basic rectification pipeline in serpentine is equipped between end, has carried out rectification to entering the fluid before vibrating pipeline so that enter and shake The problem of velocity field of dynamic pipeline is substantially without non-central offset.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 Angle is 90 degree of corner bevelling arc 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.

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 embodiment；

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 fluid flow pipe of the utility model embodiment of Fig. 2 middle casing structures；

Fig. 4 is the fluid flow pipe of the utility model embodiment and the installation diagram of connection structure；

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

Reference numeral：

1- upstream line connectors；

2- downstream line connectors；

3- housings；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 is curved Arc；414- turns to curved arc；42- fluid outlet lines；421- horizontal output pipeline sections；47- vibrates pipeline；48- non-vibration pipelines；

The first vibration pieces of 5-；

The second vibration pieces of 6-；61- extensions；

8- connection structures；81- tie-beams；811- arc pressuring plates；812- first passes through slot；813- second passes through slot； 821- connecting poles；822- hangs oneself from a beam；

Specific embodiment

The embodiment of the utility model is described in detail below in conjunction with attached drawing.

As Figure 1-Figure 4, a kind of coriolis mass flowmeters are present embodiments provided, including upstream line connector 1st, downstream line connector 2, housing 3, fluid flow pipe 4, exciting bank, detection device, vibration insulation structure and weightening structure 7.Its In, the fluid flow pipe 4 is installed in the housing 3, and isolation mounting is installed in fluid flow pipe 4 with by fluid flow pipe 4 are divided into vibration pipeline 47 and non-vibration pipeline 48, are also equipped with exciting bank and detection device in fluid flow pipe 4, encourage Device is for driving vibration pipeline 47 to vibrate, and when in fluent material ingress pipe, being 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 can be variant in the time order and function of vibration with fluid outlet section pipe, when this is called phase Between it is poor, then the phase time is poor for detecting for detection device, 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 the downstream tap opening 32 of pipe joint outer profile adaptation, the upstream line connector 1, downstream line connector 2 respectively with institute Corresponding upstream joints opening 31, downstream tap opening 32 on housing 3 is stated to be welded to connect.The present embodiment use exciting bank and Detection device is the common exciting bank of coriolis mass flowmeters and detection device of the prior art, such as exciting bank is Magnet steel, detection device is detection sensor, therefore is repeated no more.In the following, by the Coriolis matter with reference to attached drawing to the present embodiment The other parts of amount flowmeter are described in detail.

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

As shown in figure 3, the fluid flow pipe 4 of the present embodiment has to connect to receive fluid with upstream line connector 1 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 Road includes the first loop being connect with the fluid input lines 41, the second loop being connect with the fluid outlet line 42, And the crossover line between the first loop and the second loop is connected to, first loop is parallel with second loop to be set It puts, 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 Pipeline is molded, there is the 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 that is arranged in series, as one pipe by unique pipeline around to the double loop formed, 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 is without flow dividing structure, do not have to implement flow dividing structure Welding operation, therefore compared with the prior art in have 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.

The both ends of the fluid flow pipe 4 connect upstream line connector 1 and downstream line connector 2, concrete structure respectively For from upstream line connector 1 to downstream line connector 2 successively include fluid input lines 41, series connection dual loop piping and Fluid outlet line 42.One end of the fluid input lines 41 is fluid input, and the other end is the first connecting pin；The stream One end of body output pipe 42 is fluid exit, and the other end is second connection end；The dual loop is connected to described first Between connecting pin and second connection end.

In the present embodiment, vibration insulation structure is installed in the fluid flow pipe 4, is separated into and be located at by vibration insulation structure Vibration pipeline 47 on vibration insulation structure and the non-vibration pipeline 48 under vibration insulation structure.Due to the input and output side of fluid The angled setting between vibration pipeline 47, therefore fluid is inevitable on the first loop piping entered before vibrating pipeline 47 There are one section steering curved arc 414, and just because of turn to curved arc 414 presence so that fluid through steering curved arc 414 when, Fluid inside slows down, and lateral fluid speedup, fluid flow rate center is moved outward, similar to parabolical velocity flow profile, fluid The outside of curved arc can be thrown to because of centrifugal force in turning.Therefore, the fluid of vibration pipeline 47 is flowed into, flow velocity field distribution is inclined The parabola of the heart causes to vibrate the change of 47 sensitivity of pipeline, influences to vibrate the measurement performance of pipeline 47.

In order to solve above-mentioned fluid flow pipe 4 there are the defects of, the fluid input lines of the fluid flow pipe 4 of the present embodiment 41 are equipped with the basic rectification pipeline in serpentine between its fluid input and the first connecting pin, which Fluid flow direction includes bending towards opposite the first curved arc 412 and the second curved arc 413, and first curved arc 412 is close to the stream Body input terminal is set, and second curved arc 413 is set close to first connecting pin.Second curved arc 413 bend towards and institute It is identical to state bending towards for steering curved arc 414, the second curved arc 413 and steering curved arc 414 are first curved arcs 412 to right bended arc It 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, then by second Curved arc 413 and steering curved arc 414 carry out rectification so that fluid flow fields are located substantially when entering vibration pipeline 47 by three curved arcs In the case of non-central offset, the uniformity of fluid flow fields is improved.The present embodiment passes through on fluid input lines 41 Setting serpentine rectification pipeline is realized carries out rectification to the fluid for entering vibration pipeline 47 so that enters in vibration pipeline 47 Evenly, this is conducive to the measurement performance for improving vibration pipeline 47 to velocity field.

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 bent arc radius for turning to 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 carried out respectively 90 degree steering so that the fluid input of fluid input lines 41 fluid flow direction 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 continuously bend towards opposite curved arc for two, and second Curved arc 413 is also what is be directly connected to turning to curved arc 414.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 set in horizontal direction, i.e., a serpentine pipeline also is provided on described fluid outlet line 42, this kind is set so that fluid Flow duct 4 is a symmetrical structure in the horizontal direction in the housing 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 of the fluid flow pipe 4, Hastelloy, titanium alloy.

As a kind of mode of texturing of the utility model rectifying tube, the fluid input lines 41 are curved including being arranged on first The straight line pipeline between straight line pipeline and the second curved arc 413 and steering curved arc 414 between 412 and second curved arc 413 of arc, 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 It is equal to the bent arc radius of curved arc 414.

It should be noted that above-mentioned two straight line pipeline can also only set one of them, when only there are one straight line pipelines When, it needs to be adjusted the bent arc radius of the first curved arc 412, 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.

Furthermore the connection structure 8 of the present embodiment is illustrated.

In the present embodiment, on the basis of increasing weight to non-vibration part, by by non-vibration part and coriolis flow Realize flexible connection in 3 part of housing of meter so that the metering performance of sensor module, which has, to be obviously improved.

The connection structure of the present embodiment, one end are fixedly connected on non-vibration pipeline, and the other end is fixedly connected on upstream tube On road connector and downstream line connector.The connection structure of the present embodiment is a kind of " flexibility " connection structure, and so-called " flexibility " is not The material of the connection structure is limited as flexible material, but can non-vibration pipeline and upstream line by the connection structure Flexible connection relationship is set up between connector and downstream line connector, this kind flexible connection is relative to Chinese patent literature Rigid connection in CN1116588C between fixed connecting part and flowmeter shell proposes.

As the preferred embodiment in the utility model, as shown in figure 3, the connection structure 8 of the present embodiment includes 81 He of tie-beam Second vibration piece, the relatively described non-vibration pipeline 48 of the tie-beam 81 is horizontally disposed, at least one axis of the tie-beam 81 It is fixedly connected to end with the corresponding upstream line connector 1 or downstream line connector 2；Second vibration piece is located at described The lower section of first vibration piece, one end are fixedly connected with the non-vibration pipeline, and the other end is fixedly connected with the tie-beam.

Specifically, the tie-beam 81 is tubular, the axial both ends of tubular tie-beam 81 respectively with corresponding upstream line Connector 1 is fixedly connected with downstream line connector 2.It is fixedly connected with mode preferably use and is welded to connect.Tubular tie-beam 81 includes Arc pressuring plate 811 positioned at the 4 tunnel front and rear sides of fluid flow pipe, the upper side and lower side of two arc pressuring plates 811 First is respectively formed by slot 812 and second by slot 813, the fluid flow pipe 4 passes through slot 812 and by described first Two pass through the tubular tie-beam 81 by slot 813.Tubular tie-beam 81 and upstream line connector 1 and downstream line connector 2 are same Axis is set.

As shown in figure 4, second vibration piece of the present embodiment is welded to connect with tubular tie-beam 81, in this way when non-vibration pipeline During interference vibrated, since the vibration transfer path of the-the second vibration piece of non-vibration pipeline-tie-beam-flowmeter shell is longer, It is unfavorable for vibration to transmit, is conducive to prevent the vibration coupling between vibration pipeline and non-vibration pipeline, improves vibration isolation effect Fruit is conducive to mass flowmenter and obtains stable zero and good metering performance.

Further, the edge at the axial both ends of two arc pressuring plates 811 of the tubular tie-beam 81 of the present embodiment is arc Shape, tubular tie-beam and the upstream line connector and downstream line connector are coaxially disposed, by welding by arc pressuring plate with Upstream line connector is fixedly connected with downstream line connector, due to curved edge and corresponding upstream line connector 1 and downstream tube The welding surface shape adaptation of road connector 2 so that welding operation is easier to implement and can realize firm connection.

It should be noted that in the present embodiment, the upstream line connector and downstream line at the tie-beam and both ends connect Head is fixedly connected with, but the utility model is not limited to this, in other embodiments, the tie-beam only one end and upstream tube Road connector or downstream line connector are fixedly connected, and the other end is the state poised.

A kind of mode of texturing of connection structure 8 as the present embodiment, as shown in figure 5, the connection structure 8 is set for fixation The second vibration piece 6 in fluid flow pipe 4 and below the first vibration piece 5 is put, second vibration piece 6 has towards right The upstream line connector 1 and/or the extension 61 of downstream line connector 2 answered, the extension 61 with it is corresponding it is described on Trip pipe joint 1 and/or downstream line connector 2 are fixedly connected.Further specifically, the extension and corresponding upstream line Connector 1 and/or downstream line connector 2 are fixedly connected and are welded to connect.

As the alternative embodiment of the present embodiment, the connecting pole 821 of second vibration piece can also be bolt, practical In implementation, bolt is set as two, the lower ends of two bolts by being connected through a screw thread or nut drags 71 to be fixedly connected with outstanding, The upper end of two bolts is fixed on by screw thread or welding manner in overarm 822, and overarm 822 is fixedly connected on tubular tie-beam On 81.

As the alternative embodiment of the present embodiment, the tie-beam 81 or non-tubular structure form tie-beam 81 connecting plate may be non-arcuate structure, and in a wherein alternative embodiment, the axial edge of connecting plate is straight line Edge.The extension shape of connecting plate in the axial direction can also be linear type or shaped form.

As the alternative embodiment of the present embodiment, the upstream line connector and the downstream line connector respectively with institute The housing for stating coriolis mass flowmeters is fixedly connected.The tubular tie-beam and the non-coaxial setting of upstream and downstream pipe joint, The axial both ends of tubular tie-beam are welded on the housing of flowmeter so that tubular tie-beam, housing and upper and lower play pipe Road connector constitutes fixed connection structure.

Finally, the vibration insulation structure of the present embodiment is illustrated.

As shown in Figure 3-Figure 5, the vibration insulation structure includes being welded in the fluid flow pipe 4 to flow the fluid Pipe 4 is divided into the first vibration piece 5 for vibrating pipeline 47 and non-vibration pipeline 48 and second positioned at 5 lower section of the first vibration piece Vibration piece 6,5 and second vibration piece 6 of the first vibration piece are the piece of through-hole for being equipped with and being passed through for 4 tunnel of fluid flow pipe Shape structure, 5 and second vibration piece 6 of the first vibration piece 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 (20)

1. a kind of coriolis mass flowmeters sensor module, the flowmeter has to connect upstream fluid pipeline Upstream line connector and the downstream line connector for connecting downstream fluid pipeline, which is characterized in that the sensor module packet It 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；

First vibration piece is fixed on the dual loop piping the dual loop piping being separated into vibration pipeline With non-vibration pipeline；And

Connection structure, one end are fixedly connected on the non-vibration pipeline, and the other end is fixedly connected on the upstream line connector And/or on downstream line connector, so that the non-vibration pipeline connects with the corresponding upstream line connector and/or downstream line It is flexible connection between head.

2. sensor module according to claim 1, which is characterized in that the connection structure includes

Tie-beam, relatively described non-vibration pipeline are horizontally disposed with, at least one axial end portion of the tie-beam and corresponding institute It states upstream line connector or downstream line connector is fixedly connected；

Second vibration piece, positioned at the lower section of first vibration piece, one end is fixedly connected with the non-vibration pipeline, the other end with The tie-beam is fixedly connected.

3. sensor module according to claim 2, which is characterized in that the tie-beam is tubular.

4. sensor module according to claim 3, which is characterized in that the axial both ends of the tie-beam respectively with it is corresponding Upstream line connector be fixedly connected with downstream line connector.

5. sensor module according to claim 3, which is characterized in that tubular tie-beam includes being located at fluid flowing The arc pressuring plate of pipeline front and rear sides, the upper side and lower side of two arc pressuring plates are respectively formed first by slot and second By slot, the fluid flow pipe passes through the tubular tie-beam by slot and second by described first by slot.

6. sensor module according to claim 5, which is characterized in that the arc-shaped side at the arc pressuring plate axial direction both ends Edge and the corresponding upstream line connector or the welding surface shape adaptation of downstream line connector.

7. sensor module according to claim 2, which is characterized in that the tie-beam and the upstream line connector and Downstream line connector is coaxially disposed.

8. sensor module according to claim 2, which is characterized in that the connection structure is is fixed at fluid stream Dynamic pipe is upper and the second vibration piece below first vibration piece, second vibration piece have towards it is corresponding it is described on Swim the extension of pipe joint and/or downstream line connector, the extension and the corresponding upstream line connector and/or under Trip pipe joint is fixedly connected.

9. sensor module according to claim 2, which is characterized in that first vibration piece and the second vibration piece are Equipped with the laminated structure of through-hole passed through for the fluid flow line, first vibration piece and the second vibration piece pass through described Through-hole is fixedly connected with the fluid flow pipe.

10. sensor module according to claim 1, which is characterized in that the upstream line connector and the downstream tube Housing of the road connector respectively with the coriolis mass flowmeters is fixedly connected；The other end of the connection structure is fixed Connection is on the housing.

11. sensor module according to claim 1, which is characterized in that described to be fixedly connected using welding, be mechanically fixed At least one of connection.

12. sensor module according to claim 1, which is characterized in that the fluid input lines and the upstream tube Road fittings, the fluid outlet line and the downstream line fittings.

13. sensor module according to claim 1, which is characterized in that the fluid flow pipe is integrally formed pipeline.

14. according to the sensor module described in any one of claim 1-13, which is characterized in that the fluid input tube roadbed This is in " S " type, including being set along fluid flow direction and bending towards opposite the first curved arc and the second curved arc.

15. sensor module according to claim 14, which is characterized in that first curved arc and the second curved arc are circle Curved arc.

16. sensor module according to claim 15, which is characterized in that the bent arc radius of first curved arc is not more than The half of second bent arc radius.

17. sensor module according to claim 14, which is characterized in that the fluid input lines, which further include, to be arranged on Straight line between first curved arc and second curved arc and/or between second curved arc and the dual loop piping Pipe.

18. according to the sensor module described in any one of claim 1-13, which is characterized in that the fluid outlet line with The fluid input lines mirror symmetry setting.

19. a kind of coriolis mass flowmeters, which is characterized in that including：

Housing；

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 1-18.

20. coriolis mass flowmeters according to claim 19, which is characterized in that further include and fixed with the housing It sets and positioned at the upstream line connector of horizontal direction both sides of the housing and downstream line connector, the upstream line connector It is coaxially disposed with the downstream line connector；The fluid input lines of the upstream line connector and the sensor module connect It connects, the downstream line connector is connect with the fluid outlet line of the sensor module.