CN110388972A - Non- isometrical ultrasonic flowmeter series connection calibrating installation and method - Google Patents
Non- isometrical ultrasonic flowmeter series connection calibrating installation and method Download PDFInfo
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- CN110388972A CN110388972A CN201810345222.5A CN201810345222A CN110388972A CN 110388972 A CN110388972 A CN 110388972A CN 201810345222 A CN201810345222 A CN 201810345222A CN 110388972 A CN110388972 A CN 110388972A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
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Abstract
The invention discloses a kind of non-isometrical ultrasonic flowmeter series connection calibrating installation and methods, belong to gas metering field.This method comprises: multiple non-equal diameter pipes are connected by rectifier equipment, even variation occurs for flow velocity when fluid passes through tapered reducer, steady to flow into rear pipeline by rectifying when rectification section.The ultrasonic flowmeter for installing corresponding bore respectively on each pipeline, obtains the measurement data of each ultrasonic flowmeter.Non- isometrical ultrasonic flowmeter series connection calibrating installation provided by the invention and method, enable a fluid to steadily enter in rear pipeline from preceding pipeline by rectifier equipment.Multiple non-isometrical ultrasonic flowmeters are mounted on corresponding pipeline, the measurement data of multiple non-isometrical ultrasonic flowmeters can be obtained simultaneously, it is time-consuming shorter without measuring the calibrating that can be completed to multiple non-isometrical ultrasonic flowmeters in batches, save labour.
Description
Technical field
The present invention relates to gas metering field, in particular to a kind of non-isometrical ultrasonic flowmeter series connection calibrating installation and
Method.
Background technique
Ultrasonic flowmeter is to measure the velocity-type of volume flow to supersonic effect by detection fluid flowing
Instrument.Since it is widely used in the survey of gas discharge in pipeline almost without characteristics, ultrasonic flowmeters such as interference to fluid
Amount.In order to keep measurement result more accurate, need before measuring to examine and determine ultrasonic flowmeter.
The prior art carries out the calibrating of ultrasonic flowmeter in the following way: the ultrasonic flowmeter of identical bore is pressed from both sides
It holds on the pipeline of corresponding bore, by the comparison of the measurement result between different flow meter, judges the survey of ultrasonic flowmeter
It whether accurate measures result, reaches calibrating purpose.When examining and determine the bore difference of ultrasonic flowmeter, need to carry out in batches by bore
Calibrating, can only carry out the calibrating of the ultrasonic flowmeter of identical bore every time.
The existing technology has at least the following problems for designer's discovery:
The calibrating of the ultrasonic flowmeter of different bores needs to examine and determine in batches by bore, takes a long time, and consumes labour
It is larger.
Summary of the invention
The embodiment of the invention provides a kind of pipe flow meter and methods, can solve above-mentioned technical problem.Specifically
Technical solution is as follows:
In a first aspect, a kind of non-isometrical ultrasonic flowmeter series connection calibrating installation is provided, for multiple non-isometrical super
Acoustic wave flow meter is examined and determine, comprising: multiple non-equal diameter pipes compatible with the ultrasonic flowmeter, described device are also wrapped
It includes: for by the rectifier equipment of multiple placed in series；
The rectifier equipment includes: tapered reducer, the rectification section being sequentially formed along fluid flow direction；
The front end of the tapered reducer is identical as the diameter in preceding pipeline, and rear end is identical as the diameter in rear pipeline；
The molded line of the tapered reducer centre section is straight line, Wei Xinsi base curves or power exponent curve, so that described
Fluid uniformly accelerates in the tapered reducer；
The diameter of the rectification section is identical as the diameter in rear pipeline, for rectifying to the fluid, makes institute
It states after the uniform and stable inflow of fluid in pipeline.
It is honeycomb inside the rectification section front end, and in the rear end of the rectification section in a kind of possible design
Portion is provided with damping screen.
In a kind of possible design, the length of the tapered reducer is 1-5 times in preceding pipeline internal diameter.
Second aspect provides and carries out non-isometrical ultrasonic flowmeter series connection calibrating using device described in any of the above embodiments
Method, which comprises
Multiple non-equal diameter pipes are connected by rectifier equipment, fluid uniformly accelerates when passing through the tapered reducer, passes through
It crosses the rectification section to be rectified, steadily be flowed into rear pipeline from preceding pipeline；
The ultrasonic flowmeter for installing corresponding bore respectively on each pipeline, obtains each ultrasonic flow
The measurement data of meter.
In a kind of possible design, the front end of the ultrasonic flowmeter on rear pipeline is set with the rectification
The distance between standby rear end is 0.4-0.6 times in preceding pipeline internal diameter.
Technical solution provided in an embodiment of the present invention has the benefit that
Non- isometrical ultrasonic flowmeter series connection calibrating installation provided in an embodiment of the present invention, is connected multiple by rectifier equipment
Non- equal diameter pipe enables a fluid to steadily enter in rear pipeline from preceding pipeline.By multiple non-isometrical ultrasonic flowmeters
It is mounted on corresponding pipeline, the measurement data of multiple non-isometrical ultrasonic flowmeters can be obtained simultaneously.Without measuring in batches
The calibrating to multiple non-isometrical ultrasonic flowmeters can be completed, it is time-consuming shorter, save labour.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Schematic diagram when Fig. 1 is non-isometrical ultrasonic flowmeter series connection calibrating provided in an embodiment of the present invention；
Fig. 2 is the section of rectification section in non-isometrical ultrasonic flowmeter series connection calibrating installation provided in an embodiment of the present invention
Figure.
Appended drawing reference respectively indicates:
1- ultrasonic flowmeter,
2- pipeline,
201- in preceding pipeline,
202- in rear pipeline,
3- rectifier equipment,
The tapered reducer of 301-,
302- rectification section.
Specific embodiment
Unless otherwise defined, all technical terms used in the embodiment of the present invention all have usual with those skilled in the art
The identical meaning understood.To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to this hair
Bright embodiment is described in further detail.
In a first aspect, connect calibrating installation the embodiment of the invention provides a kind of non-isometrical ultrasonic flowmeter, for pair
Multiple non-isometrical ultrasonic flowmeters 1 are examined and determine, comprising: multiple non-equal diameter pipes 2 compatible with ultrasonic flowmeter 1,
For by the concatenated rectifier equipment 3 of multiple pipelines 2；
Rectifier equipment 3 includes: tapered reducer 301, the rectification section 302 being sequentially formed along fluid flow direction；
The front end of tapered reducer 301 is identical as the diameter in preceding pipeline 201, rear end and the diameter phase in rear pipeline 202
Together；
The molded line of tapered 301 centre section of reducer is straight line, Wei Xinsi base curves or power exponent curve, so that fluid exists
Uniformly accelerate in tapered reducer 301；
The diameter of rectification section 302 is identical as the diameter in rear pipeline 202, for rectifying to fluid, keeps fluid uniform
Stablize and flows into rear pipeline 202.
The working principle of non-isometrical ultrasonic flowmeter series connection calibrating installation provided in an embodiment of the present invention is carried out below
Illustrate:
Multiple pipelines 2 are connected by rectifier equipment 3, and process fluid flow uniformly accelerates when passing through tapered reducer 301, from
And guarantee stability and uniformity that fluid flow rate flows in tapered reducer 301, minimize in preceding pipeline 201
The influence of upper 1 measurement data of ultrasonic flowmeter, while to provide the entrance flow field of stable and uniform in rear pipeline 202, make
The measurement data of ultrasonic flowmeter 1 is more accurate on pipeline 202 afterwards.
The molded line of tapered 301 centre section of reducer be straight line, Wei Xinsi base curves or power exponent curve, so set,
Stability and uniformity when fluid flows in tapered reducer 301 is higher, disorderly when enabling flow through tapered reducer 301
Random degree is lower, meets the uniform acceleration purpose to fluid.
Rectification section 302 can rectify fluid, make steadily to flow by the fluid of rectification section 302 in rear pipeline 202
It is interior, further increase the measuring accuracy of the ultrasonic flowmeter 1 on rear pipeline 202.And the diameter of rectification section 302 in rear pipe
The diameter in road 202 is identical, and the fluid after making rectification enters not to get muddled in rear pipeline 202 because flow velocity changes.As it can be seen that whole
Flow device 3 can enable steadily to flow into rear pipeline 202 in the fluid in preceding pipeline 201, avoid fluid and enter in rear pipe
Interference of the disorder generated when road 202 to the measurement data of ultrasonic flowmeter 1, keeps verification result more accurate.
Flow in multiple concatenated multiple pipelines 2 of rectifier equipment 3 is equal, by multiple non-isometrical ultrasonic flowmeters 1
It is arranged on the pipeline 2 of corresponding bore, the measurement data of multiple non-isometrical ultrasonic flowmeters 1 can be obtained simultaneously, and then obtain
Know whether the measurement data of each ultrasonic flowmeter 1 is accurate, completes the calibrating to ultrasonic flowmeter 1.
The calibrating installation as it can be seen that non-isometrical ultrasonic flowmeter provided in an embodiment of the present invention is connected, is gone here and there by rectifier equipment 3
Join multiple non-equal diameter pipes 2, enables a fluid to steadily enter in rear pipeline 202 from preceding pipeline 201.It will be multiple non-isometrical
Ultrasonic flowmeter 1 is mounted on corresponding pipeline 2, can obtain the measurement number of multiple non-isometrical ultrasonic flowmeters 1 simultaneously
According to.Compared with prior art, without measuring the calibrating that can be completed to multiple non-isometrical ultrasonic flowmeters 1 in batches, it is time-consuming compared with
It is short, save labour.
Wherein, the intersection of the plane where the central axes of tapered reducer 301 and tapered reducer 301 is tapered variable diameter
The molded line of 301 centre sections of section.
Before upstream when being flowed with fluid is, after downstream is, rectification for two adjacent pipelines 2 and between the two is set
For standby 3, the pipeline 2 positioned at 3 upstream of rectifier equipment as in preceding pipeline 201, make by the pipeline 2 positioned at the rear end of rectifier equipment 3
For in rear pipeline 202.That is, being for intermediary with rectifier equipment 3, the pipeline 2 of front end is in preceding pipeline 201, the pipeline 2 of rear end
For in rear pipeline 202.
The front end of tapered reducer 301 is identical as the diameter in preceding pipeline 201, rear end and the diameter phase in rear pipeline 202
Together, being relatively large in diameter in preceding pipeline 201, it is smaller in the diameter of rear pipeline 202, sequentially through bigbore in process fluid flow
Ultrasonic flowmeter 1 (being arranged on preceding pipeline 201), rectifier equipment 3, small-bore ultrasonic flowmeter 1 (are arranged rear
On pipeline 202).
When fluid flow rate changes, it is also easy to produce the disorders situation such as vortex or irregular flowing, rectification section 302 is to fluid
Rectification be to eliminate fluid whirl, the fluid irregularly flowed is transformed into the fluid of regular flow.
Below to each component and its work of non-isometrical ultrasonic flowmeter series connection calibrating installation provided in an embodiment of the present invention
It is illustrated with giving respectively:
In the embodiment of the present invention, rectification section 302 is for rectifying fluid, for the structure of rectification section 302, below into
Row illustrates:
It is honeycomb inside the front end of rectification section 302, and the rear end of rectification section 302 is internally provided with damping screen.
So set, flowing, then flowing through backward uniformly through the socket bore of honeycomb after fluid enters rectification section 302
Damping screen enters honeycomb and damping screen in rear pipeline 202, flow process and plays rectified action to fluid, eliminates vortex,
The fluid irregularly flowed is set to become rule.
Wherein, honeycomb can be formed by the close Side by side groupings of pipeline that more sections are regular hexagon.Also, more
The sectional area of regular hexagon pipeline is equal in length, and the sectional area of every square pipe can be the 1/ of 302 internal diameter of rectification section
, for example, it can be 1/10,1/20, the 1/30 of 302 internal diameter of rectification section.
The total sectional area of honeycomb is equal with the sectional area of rectification section 302, that is, the outer wall and rectification section of honeycomb
302 inner wall contact.The length of honeycomb can be the 1/3-2/3 of 302 length of rectification section, for example, can be rectification
1/3,1/2,2/3 etc. of 302 length of section.
In addition, the front end of rectification section 302 can also be arranged to other porous structure forms, it can be more circles for example
Borehole structure made of the close Side by side groupings of pipeline.Alternatively, can be side made of the more close Side by side groupings of square pipe
Holes mechanism.
Damping screen be for current stabilization, removal of impurities, bubble removing mesh medium, be this field it is common, for example, Anping
The damp type titanium silk gas-liquid filter net of Bo Lin wire mesh Co., Ltd, county sale can be used as the resistance that the embodiment of the present invention uses
Buddhist nun's net.
In the embodiment of the present invention, the length of tapered reducer 301 is at 1-5 times of 201 internal diameter of preceding pipeline.So set,
Making the length of tapered reducer 301, in tapered reducer 301 cataclysm will not occur for the flow velocity of fluid, into one within a preset range
Step reduces the disorder degree during fluid flow rate changes.For example, if the internal diameter in preceding pipeline 201 is D, tapered reducer
301 length can be 1D, 2D, 5D etc..
Second aspect, the embodiment of the invention provides carry out pipeline flow measurement using device described in any of the above embodiments
Method, this method comprises:
Multiple non-equal diameter pipes 2 are connected by rectifier equipment 3, fluid uniformly accelerates when passing through tapered reducer 301, passes through
Over commutation section 302 is rectified, from steadily being flowed into rear pipeline 202 in preceding pipeline 201；
The ultrasonic flowmeter 1 for installing corresponding bore respectively on each pipeline 2, obtains each ultrasonic flowmeter 1
Measurement data.
Non- isometrical ultrasonic flowmeter series connection calibration method provided in an embodiment of the present invention, is connected more by rectifier equipment 3
A non-equal diameter pipe 2 enables a fluid to steadily enter in rear pipeline 202 from preceding pipeline 201.By multiple non-isometrical ultrasounds
Wave flowmeter 1 is mounted on corresponding pipeline 2, can obtain the measurement data of multiple non-isometrical ultrasonic flowmeters 1 simultaneously.With
The prior art is compared, time-consuming shorter without measuring the calibrating that can be completed to multiple non-isometrical ultrasonic flowmeters 1 in batches, section
Save labour.
Wherein, it is at a distance from the front end of the ultrasonic flowmeter 1 on rear pipeline 202 is between the rear end of rectifier equipment 3
At 0.4-0.6 times of 201 internal diameter of preceding pipeline.So set, making ultrasonic flowmeter 1 and rectifier equipment 3 on rear pipeline 202
Between have a certain distance, make rectification after fluid steadily flow into rear pipeline 202, keep measurement result more accurate.
For in front tube at a distance from the front end of the ultrasonic flowmeter 1 on rear pipeline 202 is between the rear end of rectifier equipment 3
0.4-0.6 times of 201 internal diameter of road.For example, if preceding pipeline 201 internal diameter be D, the front end of ultrasonic flowmeter 1 with
The distance between rear end of rectifier equipment 3 can be 0.4D, 0.5D, 0.6D etc..
The foregoing is merely presently preferred embodiments of the present invention, the protection scope being not intended to limit the invention, all in this hair
Within bright spirit and principle, any modification, equivalent replacement, improvement and so on should be included in protection scope of the present invention
Within.
Claims (5)
- The calibrating installation 1. a kind of non-isometrical ultrasonic flowmeter is connected, for being carried out to multiple non-isometrical ultrasonic flowmeters (1) Calibrating, comprising: compatible multiple non-equal diameter pipes (2) with the ultrasonic flowmeter (1), which is characterized in that described device Further include: it is used for the concatenated rectifier equipment of multiple pipelines (2) (3)；The rectifier equipment (3) includes: tapered reducer (301), the rectification section (302) being sequentially formed along fluid flow direction；The front end of the tapered reducer (301) is identical as the diameter in preceding pipeline (201), rear end in rear pipeline (202) Diameter is identical；The molded line of tapered reducer (301) centre section is straight line, Wei Xinsi base curves or power exponent curve, so that described Fluid uniformly accelerates in the tapered reducer (301)；The diameter of the rectification section (302) is identical as the diameter in rear pipeline (202), whole for carrying out to the fluid Stream makes described in the uniform and stable inflow of the fluid in rear pipeline (202).
- 2. the apparatus according to claim 1, which is characterized in that it is honeycomb inside rectification section (302) front end, and The rear end of the rectification section (302) is internally provided with damping screen.
- 3. the apparatus according to claim 1, which is characterized in that the length of the tapered reducer (301) is described preceding 1-5 times of pipeline (201) internal diameter.
- 4. the method for carrying out non-isometrical ultrasonic flowmeter series connection calibrating using device described in claim 1-3, feature exist In, which comprisesMultiple non-equal diameter pipes (2) are connected by rectifier equipment (3), fluid passes through uniform when tapered reducer (301) Accelerate, is rectified by the rectification section (302), it is interior in rear pipeline (202) from steadily being flowed into preceding pipeline (201)；The ultrasonic flowmeter (1) for installing corresponding bore respectively on each pipeline (2), obtains each supersonic flow The measurement data of meter (1).
- 5. according to the method described in claim 4, it is characterized in that, the ultrasonic flow on rear pipeline (202) The distance between the front end of (1) and the rear end of the rectifier equipment (3) are counted as the 0.4-0.6 in preceding pipeline (201) internal diameter Times.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810345222.5A CN110388972B (en) | 2018-04-17 | 2018-04-17 | Serial calibrating device and method for non-isodiametric ultrasonic flowmeter |
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| CN201810345222.5A CN110388972B (en) | 2018-04-17 | 2018-04-17 | Serial calibrating device and method for non-isodiametric ultrasonic flowmeter |
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Cited By (1)
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