CN207585729U - A kind of heavy caliber fluid flowmeter on-line calibration device - Google Patents
A kind of heavy caliber fluid flowmeter on-line calibration device Download PDFInfo
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- CN207585729U CN207585729U CN201721613913.6U CN201721613913U CN207585729U CN 207585729 U CN207585729 U CN 207585729U CN 201721613913 U CN201721613913 U CN 201721613913U CN 207585729 U CN207585729 U CN 207585729U
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Abstract
The utility model is related to a kind of heavy caliber fluid flowmeter on-line calibration devices, for calibrate be mounted on fluid pipeline on by school fluid flowmeter, including pedestal, ball valve and inserting-type flowmeter, the pedestal is fixed on fluid pipeline, one end of the ball valve is set on the base, and the other end is used to connect inserting-type flowmeter.First through hole is offered on the sphere of ball valve, the second through-hole is offered on pedestal, third through-hole is offered on fluid pipeline, the inserting-type flowmeter is sequentially inserted into first through hole, the second through-hole and third through-hole so that the measuring probe of the inserting-type flowmeter is located in the fluid pipeline.The calibrating installation of the utility model is simple in structure, after on fluid pipeline, the measuring probe of its inserting-type flowmeter is located in fluid pipeline, so as to which measuring probe is avoided to be in direct contact with fluid pipeline, solve the problems, such as that heavy caliber flowing meter caused by inner and outer walls of pipeline corrosion and pipe operations narrow space can not field calibration.
Description
Technical field
The utility model is related to fluid flowmeter collimation technique field more particularly to a kind of heavy caliber fluid flowmeter are online
Calibrating installation.
Background technology
Heavy caliber fluid flowmeter is often applied to be related to the fields such as environmental monitoring or trade settlement, belongs to state compulsion inspection
Determine the measurement instrument in range.This kind of flowmeter bore is big (generally in more than DN250), higher to measuring requirement, needs periodically
Detection is reliable to ensure to measure.Since most heavy caliber fluid flowmeter institutes metering conduit is all worked continuously to be round-the-clock, one
As do not allow to stop, and the pipeline that is detected of these heavy caliber flowing meters is mostly underground pipe, flowmeter is mounted in monitoring well,
Flowmeter dismounting, transport difficult, can not realize regularly Off-line calibration, therefore, for the online school of heavy caliber fluid flowmeter
Standard is extremely important.
Being presently used for the on-line calibration method of heavy caliber fluid flowmeter mainly has a standard scale Comparison Method, this method be
A standard scale is installed on pipeline where online heavy caliber flowing meter, synchronous recording passes through online heavy caliber flowing meter and standard scale
Flow, using the flow of standard scale as standard value, calculate the error of online flowmeter, and then adjust online flowmeter coefficient,
Achieve the purpose that detection, the online flowmeter of calibration.External-clamping type ultrasonic flowmeter Comparison Method is commonly used in standard scale Comparison Method, such as
Fig. 1 is the schematic diagram of external-clamping type ultrasonic flowmeter time difference method field calibration, and the first ultrasonic probe 11 and the second ultrasonic wave are visited
First 12 are installed in respectively on the outer wall of fluid pipeline 10, and this method is suitable against two directions of propagation, profit in fluid with ultrasonic wave
With the relationship between propagation time difference and fluid flow rate, fluid flow is acquired.
Using external-clamping type ultrasonic flowmeter as standard scale in external-clamping type ultrasonic flowmeter Comparison Method, although can be with
It is directly sandwiched on the pipeline of detected flowmeter and carries out calibration detection, do not needed to enterprise and stop production, to the side of bringing of enterprise
Just, still, external-clamping type ultrasonic flowmeter is clamped in when being measured on tested flowmeter pipeline, needs to meet inner and outer walls of pipeline light
Sliding, pipeline has enough operating spaces just to can measure, and some heavy caliber fluid flowmeter pipelines are embedded in underground more, only stay
One monitoring well monitors flowmeter state, and due to more than outside infiltration, internal liquid impurity etc., the inside and outside wall of pipeline often becomes rusty
Mark is full of stains or spots, and operating space is narrow in monitoring well, and calibration detection can not be carried out using external-clamping type ultrasonic flowmeter.
Invention content
For the above problem of the prior art, the purpose of the utility model is to provide a kind of heavy caliber fluid flowmeters
On-line calibration device is got rusty with solving heavy caliber fluid flowmeter inner and outer walls of pipeline, pipe operations narrow space, can not be selected outer
The problem of clip ultrasonic flowmeter carries out field calibration as standard scale.
To solve the above-mentioned problems, the technical solution of the utility model is as follows：
A kind of heavy caliber fluid flowmeter on-line calibration device, for calibrate be mounted on fluid pipeline on by school liquid flow
Gauge, including pedestal, ball valve and inserting-type flowmeter, the pedestal is fixed on the fluid pipeline, one end of the ball valve
It being arranged on the pedestal, the other end is used to connect the inserting-type flowmeter,
First through hole is offered on the sphere of the ball valve, the second through-hole, the fluid pipeline are offered on the pedestal
On offer third through-hole, the inserting-type flowmeter is sequentially inserted into the first through hole, the second through-hole and third through-hole so that
The measuring probe of the inserting-type flowmeter is located in the fluid pipeline.
Further, the third through-hole on the fluid pipeline is set by the way of online pipeline tapping, described online
Pipeline tapping includes the following steps：
The ball valve is fixed on the pedestal, and the pedestal is fixed on the fluid pipeline；
Ball valve is opened, seal and opening device on the ball valve is installed, trepanning is carried out to the fluid pipeline；
After the completion of trepanning, ball valve is closed, unloads hole making drill, the third through-hole opens up completion.
Further, the overpressure of the fluid pipeline is no more than 0.6MPa.
Further, the central axis of the first through hole, the second through-hole and third through-hole, and the first through hole,
The aperture of second through-hole and third through-hole is not less than the diameter of the inserting-type flowmeter measuring probe.
Further, the ball valve is welded on the pedestal, and the tube chamber welds with base is on the fluid pipeline.
Further, it is installed when the heavy caliber fluid flowmeter on-line calibration device is mounted on the fluid pipeline
Point and the distance by between the installation point of school fluid flowmeter are not less than 3 times of the fluid pipeline caliber.
Further, after the inserting-type flowmeter is sequentially inserted into the first through hole, the second through-hole and third through-hole, institute
The measuring probe for stating inserting-type flowmeter is located at the center of the fluid pipeline.
Further, the plug-in type flow is calculated as inserted electromagnet flow meter.
A kind of heavy caliber fluid flowmeter on-line calibration device of the utility model, has the advantages that：
(1) the heavy caliber fluid flowmeter on-line calibration device of the utility model includes pedestal, ball valve and plug-in type flow
Meter, pedestal are fixed on fluid pipeline, and one end of ball valve is set on the base, and the other end is used to connect inserting-type flowmeter,
Through-hole is equipped on ball valve, pedestal and fluid pipeline, inserting-type flowmeter is sequentially inserted into the through-hole, and causes the plug-in type stream
The measuring probe of gauge is located in fluid pipeline, compared with external-clamping type ultrasonic flowmeter calibrating installation of the prior art,
After on-line calibration device in the utility model is mounted on fluid pipeline, the measuring probe of inserting-type flowmeter is located at liquid
In pipeline, the fluid pipeline so as to avoid measuring probe and tested flowmeter is in direct contact, and is solved in pipeline well
Heavy caliber flowing meter caused by outer wall corrosion and pipe operations narrow space can not field calibration the problem of.
(2) the heavy caliber fluid flowmeter on-line calibration device of the utility model employs online pipeline in installation process
The mode of trepanning opens up the through-hole for being inserted into inserting-type flowmeter on fluid pipeline, realizes the overpressure of fluid pipeline
In the online real stream trepanning of below 0.6MPa, it is out of service flowmeter is not needed to.
(3) the heavy caliber fluid flowmeter on-line calibration apparatus structure of the utility model is simple, easy to operate, in needs pair
When being calibrated by school fluid flowmeter, ball valve only need to be opened, inserting-type flowmeter is loaded onto, after the completion of calibration, takes plug-in type away
Flowmeter simultaneously closes ball valve, and same operation is taken when calibrating next time.
Description of the drawings
It, below will be to institute in embodiment or description of the prior art in order to illustrate more clearly of the technical solution of the utility model
Attached drawing to be used is needed to be briefly described.It should be evident that the accompanying drawings in the following description is only some of the utility model
Embodiment, for those of ordinary skill in the art, without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the schematic diagram of external-clamping type ultrasonic flowmeter time difference method field calibration of the prior art；
Fig. 2 is showing for the heavy caliber fluid flowmeter on-line calibration device field calibration that one embodiment of the utility model provides
It is intended to；
In figure：10- fluid pipelines, 20- is by school fluid flowmeter, 30- heavy caliber fluid flowmeter on-line calibration devices,
301- pedestals, 302- ball valves, 303- inserting-type flowmeters, the first ultrasonic probes of 11-, the second ultrasonic probes of 12-, 3031-
Measuring probe.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are in the premise for not making creative work
Lower all other embodiments obtained, shall fall within the protection scope of the present invention.
Embodiment 1
The present embodiment provides a kind of heavy caliber fluid flowmeter on-line calibration devices, can solve heavy caliber fluid flowmeter
Inner and outer walls of pipeline gets rusty, pipe operations narrow space, and external-clamping type ultrasonic flowmeter can not be selected to carry out scene as standard scale
The problem of calibration.
Referring to Fig. 2, it, which show heavy caliber fluid flowmeter on-line calibration device provided in this embodiment, carries out scene
The schematic diagram of calibration, as seen from the figure, the heavy caliber fluid flowmeter on-line calibration device 30 are mounted on the liquid for conveying liquid
On body pipeline 10, which is similarly installed at the quilt on fluid pipeline 10 for calibration
School fluid flowmeter 20.The caliber DN of fluid pipeline 10 is not less than 250mm.
Specifically, the heavy caliber fluid flowmeter on-line calibration device 30 includes pedestal 301, ball valve 302 and plug-in type stream
Gauge 303, pedestal 301 are fixed on fluid pipeline 10, and one end of ball valve 302 is arranged on the pedestal 301, and the other end is used
In connecting the inserting-type flowmeter 303, first through hole is offered on the sphere of the ball valve 302, is opened up on the pedestal 301
There is the second through-hole, third through-hole is offered on the fluid pipeline 10, the inserting-type flowmeter 303 is sequentially inserted into described first
Through-hole, the second through-hole and third through-hole so that the measuring probe 3031 of the inserting-type flowmeter 303 is located at the fluid pipeline
In 10.
Compared with external-clamping type ultrasonic flowmeter calibrating installation of the prior art, the heavy caliber liquid in the utility model
After flowmeter body on-line calibration device is mounted on fluid pipeline, the measuring probe of inserting-type flowmeter is located at fluid pipeline
Interior, the fluid pipeline so as to avoid measuring probe and tested flowmeter is in direct contact, and solves inner and outer walls of pipeline well
Heavy caliber flowing meter caused by corrosion and pipe operations narrow space can not field calibration the problem of.
Pedestal 301 is fixed on the outer wall of fluid pipeline 10 preferably through the mode of welding, ball valve 302 preferably also by
The mode of welding is connect with pedestal 301.In order to when not in use remove inserting-type flowmeter 303, the present embodiment is preferred
, inserting-type flowmeter 303 is removably attachable to the end of ball valve 302, and this dismountable connection can be to be threadedly coupled
Or the docking of flange.
For the ease of installation, the second through-hole and liquid that are opened up in the first through hole opened up on the sphere of ball valve 302, pedestal
The central axis of the third through-hole opened up on body pipeline 10, and the aperture of first through hole, the second through-hole and third through-hole is not
Less than the diameter of 303 measuring probe 3031 of inserting-type flowmeter.
Situ liquid flowmeter calibrating installation of the prior art is installed before fluid pipeline commencement of commercial operation, works as liquid
Body pipeline, which comes into operation in i.e. pipeline to have, can not install flowmeter calibrating installation during liquid conveying, therefore, bring very big
It is inconvenient.And in the present embodiment, the third through-hole on the fluid pipeline 10 is set by the way of online pipeline tapping, described
Online pipeline tapping includes the following steps：
(1) ball valve 302 is fixed on the pedestal 301, and the pedestal 301 is fixed on the fluid pipeline
On 10；
(2) ball valve 302 is opened, seal and opening device on the ball valve 302 is installed, trepanning is carried out to the fluid pipeline 10；
(3) after the completion of trepanning, ball valve 302 is closed, unloads hole making drill, the third through-hole opens up completion.
As it can be seen that the heavy caliber fluid flowmeter on-line calibration device 30 of the present embodiment can pass through the side of online pipeline tapping
Formula is installed, and after the completion of third through-hole opens up, pedestal 301 and ball valve 302 have also been fixedly mounted on fluid pipeline 10 therewith, is used
When, ball valve 302 only need to be opened, the calibration of situ liquid flowmeter can be carried out by then plugging inserting-type flowmeter 303, calibrated
Cheng Hou need to only extract inserting-type flowmeter 303, and close ball valve 302, and same operation is taken when calibrating next time.Due to
It can be installed using online pipeline tapping, therefore, be substantially increased to carrying out field calibration by school fluid flowmeter 20
Flexibility, it is convenient and efficient, do not need to out of service by school flowmeter in installation process.
In order to ensure the sealing performance and security performance of the fluid pipeline after installation, it is preferred that the fluid pipeline 10
Overpressure is no more than 0.6MPa.
In order to ensure the reliability of calibration result, it is preferred that the heavy caliber fluid flowmeter on-line calibration device 30 is pacified
Its installation point and the distance by between the installation point of school fluid flowmeter 20 are not less than 3 times when on the fluid pipeline 10
10 caliber of the fluid pipeline.It should be noted that the heavy caliber fluid flowmeter on-line calibration device 30 of the present embodiment can
To be mounted on by before school fluid flowmeter 20, can also be mounted on by after school fluid flowmeter 20.As a kind of preferred
Embodiment, it is described to insert after the inserting-type flowmeter 303 is sequentially inserted into the first through hole, the second through-hole and third through-hole
The measuring probe 3031 for entering formula flowmeter 303 is located at the center of the fluid pipeline 10.The inserting-type flowmeter 303 is preferred
It is inserted electromagnet flow meter, may be the inserting-type flowmeter of other forms, such as plug-in type flux of vortex street certainly
Meter, plug-in type ultrasonic flowmeter etc., the utility model is not restricted this.
Embodiment 2
The present embodiment uses the heavy caliber fluid flowmeter on-line calibration device field calibration in embodiment 1 to be mounted on liquid
Differential pressure flowmeter on pipeline.Specifically, the heavy caliber fluid flowmeter on-line calibration device is pacified according to position shown in Fig. 2
Dress, the caliber of the fluid pipeline are DN800, and flow rate of liquid is 1.2m/s in pipeline.Inserting-type flowmeter 303 selects plug-in type electricity
Magnetic flowmeter, after which traces to the source under the corresponding bore of laboratory installation and flow velocity, field calibration differential pressure
Formula flowmeter 6 times, specific data are shown in Table 1.
Table 1
From the data in table 1, it can be seen that using the heavy caliber fluid flowmeter on-line calibration device of the utility model to bigbore
Differential pressure flowmeter carries out single-point calibration 6 times, and mean error is -1.98.Under normal circumstances, heavy caliber under specified conditions at the scene
The measurement request of the fluid flowmeter error of indication is ± 3%, therefore, the heavy caliber fluid flowmeter on-line calibration of the utility model
Device disclosure satisfy that the measurement request of live specified conditions.
In summary, a kind of heavy caliber fluid flowmeter on-line calibration device of the utility model has as follows
Advantageous effect：
(1) the heavy caliber fluid flowmeter on-line calibration device of the utility model includes pedestal, ball valve and plug-in type flow
Meter, pedestal are fixed on fluid pipeline, and one end of ball valve is set on the base, and the other end is used to connect inserting-type flowmeter,
Through-hole is equipped on ball valve, pedestal and fluid pipeline, inserting-type flowmeter is sequentially inserted into the through-hole, and causes the plug-in type stream
The measuring probe of gauge is located in fluid pipeline, compared with external-clamping type ultrasonic flowmeter calibrating installation of the prior art,
After on-line calibration device in the utility model is mounted on fluid pipeline, the measuring probe of inserting-type flowmeter is located at liquid
In pipeline, the fluid pipeline so as to avoid measuring probe and tested flowmeter is in direct contact, and is solved in pipeline well
Heavy caliber flowing meter caused by outer wall corrosion and pipe operations narrow space can not field calibration the problem of.
(2) the heavy caliber fluid flowmeter on-line calibration device of the utility model employs online pipeline in installation process
The mode of trepanning opens up the through-hole for being inserted into inserting-type flowmeter on fluid pipeline, realizes the overpressure of fluid pipeline
In the online real stream trepanning of below 0.6MPa, it is out of service flowmeter is not needed to.
(3) the heavy caliber fluid flowmeter on-line calibration apparatus structure of the utility model is simple, easy to operate, in needs pair
When being calibrated by school fluid flowmeter, ball valve only need to be opened, inserting-type flowmeter is loaded onto, after the completion of calibration, takes plug-in type away
Flowmeter simultaneously closes ball valve, and same operation is taken when calibrating next time.
Above description fully discloses specific embodiment of the present utility model.It should be pointed out that being familiar with the neck
The technical staff in domain is to any change that specific embodiment of the present utility model is done all without departing from the right of the utility model
The range of claim.Correspondingly, the scope of the claims of the utility model is also not limited only to aforementioned specific embodiment party
Formula.
Claims (8)
1. a kind of heavy caliber fluid flowmeter on-line calibration device, for calibrate be mounted on fluid pipeline (10) by school liquid
Flowmeter (20), which is characterized in that including pedestal (301), ball valve (302) and inserting-type flowmeter (303), the pedestal
(301) it is fixed on the fluid pipeline (10), one end of the ball valve (302) is arranged on the pedestal (301), another
It holds for connecting the inserting-type flowmeter (303),
First through hole is offered on the sphere of the ball valve (302), the second through-hole, the liquid are offered on the pedestal (301)
Third through-hole is offered on body pipeline (10), the inserting-type flowmeter (303) is sequentially inserted into the first through hole, the second through-hole
And third through-hole so that the measuring probe (3031) of the inserting-type flowmeter (303) is in the fluid pipeline (10).
A kind of 2. heavy caliber fluid flowmeter on-line calibration device according to claim 1, which is characterized in that the liquid
Third through-hole on pipeline (10) is set by the way of online pipeline tapping.
A kind of 3. heavy caliber fluid flowmeter on-line calibration device according to claim 2, which is characterized in that the liquid
The overpressure of pipeline (10) is no more than 0.6MPa.
4. a kind of heavy caliber fluid flowmeter on-line calibration device according to claim 1, which is characterized in that described first
The central axis of through-hole, the second through-hole and third through-hole, and the aperture of the first through hole, the second through-hole and third through-hole is equal
Not less than the diameter of the inserting-type flowmeter (303) measuring probe (3031).
A kind of 5. heavy caliber fluid flowmeter on-line calibration device according to claim 1, which is characterized in that the ball valve
(302) it is welded on the pedestal (301), the pedestal (301) is welded on the fluid pipeline (10).
A kind of 6. heavy caliber fluid flowmeter on-line calibration device according to claim 1, which is characterized in that the big mouth
When diameter fluid flowmeter on-line calibration device (30) is on the fluid pipeline (10) its installation point with it is described by school liquid
Distance between the installation point of flowmeter (20) is not less than the 3 times fluid pipeline (10) caliber.
A kind of 7. heavy caliber fluid flowmeter on-line calibration device according to claim 1, which is characterized in that the insertion
After formula flowmeter (303) is sequentially inserted into the first through hole, the second through-hole and third through-hole, the inserting-type flowmeter (303)
Measuring probe (3031) positioned at the center of the fluid pipeline (10).
A kind of 8. heavy caliber fluid flowmeter on-line calibration device according to claim 1, which is characterized in that the insertion
Formula flowmeter (303) is inserted electromagnet flow meter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721613913.6U CN207585729U (en) | 2017-11-28 | 2017-11-28 | A kind of heavy caliber fluid flowmeter on-line calibration device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721613913.6U CN207585729U (en) | 2017-11-28 | 2017-11-28 | A kind of heavy caliber fluid flowmeter on-line calibration device |
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| CN207585729U true CN207585729U (en) | 2018-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860442A (en) * | 2017-11-28 | 2018-03-30 | 苏州市计量测试研究所 | A kind of heavy caliber fluid flowmeter on-line calibration device |
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- 2017-11-28 CN CN201721613913.6U patent/CN207585729U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860442A (en) * | 2017-11-28 | 2018-03-30 | 苏州市计量测试研究所 | A kind of heavy caliber fluid flowmeter on-line calibration device |
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Address after: 215128 No. 69 Wenqu Road, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Suzhou metrology and Testing Institute Address before: 215128 No. 69 Wenqu Road, Suzhou City, Jiangsu Province Patentee before: Suzhou Institute of Measurement and Testing |