CN109579924A - A kind of more card slot type ultrasonic flow rate measurement devices - Google Patents
A kind of more card slot type ultrasonic flow rate measurement devices Download PDFInfo
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- CN109579924A CN109579924A CN201811370689.1A CN201811370689A CN109579924A CN 109579924 A CN109579924 A CN 109579924A CN 201811370689 A CN201811370689 A CN 201811370689A CN 109579924 A CN109579924 A CN 109579924A
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- Prior art keywords
- gas
- flow rate
- measurement chamber
- card slot
- slot type
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/662—Constructional details
Abstract
The invention discloses a kind of more card slot type ultrasonic flow rate measurement devices, including gas flow path, metering module and computing module, the gas flow path includes multiple mutually independent gas segmentation measurement chambers, is arranged oppositely two ultrasonic probes in each gas segmentation measurement chamber；When gas flows through each gas segmentation measurement chamber, the transmission time between two ultrasonic probe sound waves is measured by the metering module；The computing module determines the gas flow of each gas segmentation measurement chamber according to the acoustic transit time that the metering module measures, then calculates each gas and divide the sum of gas flow of measurement chamber and obtain total gas flow rate.Gas flow path is divided into multiple mutually independent gases and divides measurement chamber by the present invention, so that turbulence flow flied and transition flow field have been divided into laminar condition, making the ratio between line flow velocity and surface current speed is constant.Also, all aisle spares flowed through are all covered by the signal of ultrasonic probe, it can be achieved that whole flow field covering, is conducive to improve accuracy of measurement.
Description
Technical field
The present invention relates to a kind of metering device more particularly to a kind of more card slot type ultrasonic flow rate measurement devices.
Background technique
Ultrasonic flowmeter in the prior art, using being horizontally mounted three pairs of ultrasonic probes in pipeline drift diameter,
Ultrasonic probe carry out level is to penetrating and accepting method.
Make in this way, the flow field of measurement cannot reach whole flow field covering.The fluidised form of gas in the duct is unstable
The ratio between fluidised form, surface current speed and line flow velocity are not a constants, then need to carry out the complexity such as Reynolds number amendment to the fluidised form of gas
Calculating, thus make ultrasonic flowmeter stability and reliability reduce.
Summary of the invention
The present invention is directed to the drawbacks of prior art, provides a kind of more card slot type ultrasonic flow rate measurement devices.
More card slot type ultrasonic flow rate measurement devices of the present invention, including gas flow path, metering module and operation mould
Block, the gas flow path include multiple mutually independent gas segmentation measurement chambers, are arranged oppositely in each gas segmentation measurement chamber
Two ultrasonic probes；
When gas flows through each gas segmentation measurement chamber, measured between two ultrasonic probe sound waves by the metering module
Transmission time；The computing module determines that each gas divides measurement chamber according to the acoustic transit time that the metering module measures
The sum of gas flow, then gas flow for calculating each gas segmentation measurement chamber and obtain total gas flow rate.
In more card slot type ultrasonic flow rate measurement devices of the present invention, gas segmentation measurement chamber be three and
It is arranged in parallel；
The gas segmentation measurement chamber includes runner cavity, and multiple parallel segmentations are provided in the flow passage chamber body
Plate is oppositely arranged ultrasonic probe in the two sides of the runner cavity.
It further include being set to three gas segmentation meterings in more card slot type ultrasonic flow rate measurement devices of the present invention
The gas distribution of inflow is directed respectively into the gas segmentation measurement chamber by the distributing damper of chamber front end, the distributing damper.
It further include being set to three gas segmentation meterings in more card slot type ultrasonic flow rate measurement devices of the present invention
The rear cover of cavity rear end.
In more card slot type ultrasonic flow rate measurement devices of the present invention, measured in the rear cover and gas segmentation
It is additionally provided with back cover baffle between chamber, is additionally provided with silica gel sealing ring between the rear cover and the back cover baffle.
In more card slot type ultrasonic flow rate measurement devices of the present invention, open up that there are three logical in the back cover baffle
Hole, the three gas segmentation measurement chamber, which respectively corresponds, is installed on three through holes, and the runner of gas segmentation measurement chamber
The open rearward end of cavity is communicated with the through-hole.
In more card slot type ultrasonic flow rate measurement devices of the present invention, the two sides of the runner cavity open up respectively to be passed through
Logical bayonet, the ultrasonic probe are installed in the perforation bayonet.
It further include being set in the perforation bayonet in more card slot type ultrasonic flow rate measurement devices of the present invention
Probe mount, the ultrasonic probe are installed in the probe mount, and are fixed by cover board of popping one's head in.
Using structure of the present invention, gas flow path is divided into multiple mutually independent gases and divides measurement chamber, from
And turbulence flow flied and transition flow field have been divided into laminar condition, making the ratio between line flow velocity and surface current speed is constant.Also, each gas
Segmentation measurement chamber is all provided with ultrasonic probe, and all aisle spares flowed through is enabled all to be covered by the signal of ultrasonic probe,
Whole flow field covering can be achieved, the front and back flow development length requirement of Ultrasonic Wave Flowmeter amount device can also be ignored, be conducive to
Improve accuracy of measurement.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of more card slot type ultrasonic flow rate measurement devices of the present invention.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
As shown in Figure 1, more card slot type ultrasonic flow rate measurement devices of the present invention, including gas flow path, metering mould
Block (not shown) and computing module metering module (not shown).Wherein, the metering module and computing module can be used existing
There is the structure in technology, i.e., the described metering module is responsible for measuring the transmission time between two ultrasonic probe sound waves, the fortune
It calculates module and gas flow is determined according to the acoustic transit time that the metering module measures.
In the present invention, the gas flow path includes multiple mutually independent gas segmentation measurement chambers 11, is divided in each gas
Two ultrasonic probes 9 are arranged oppositely in measurement chamber 11.When gas flows through each gas segmentation measurement chamber 11, by the metering mould
Block measures the transmission time between two ultrasonic probe sound waves 9；The sound that the computing module is measured according to the metering module
Wave transmission time determines the gas flow of each gas segmentation measurement chamber, then calculates the sum of the gas flow of each gas segmentation measurement chamber
And obtain total gas flow rate.
Using structure of the present invention, gas flow path is divided into multiple mutually independent gases and divides measurement chamber, from
And turbulence flow flied and transition flow field have been divided into laminar condition, making the ratio between line flow velocity and surface current speed is constant.Also, each gas
Segmentation measurement chamber is all provided with ultrasonic probe, and all aisle spares flowed through is enabled all to be covered by the signal of ultrasonic probe,
Whole flow field covering can be achieved, the front and back flow development length requirement of Ultrasonic Wave Flowmeter amount device can also be ignored, be conducive to
Improve accuracy of measurement.
By Reynolds (Reynolds) experiment it is found that generating two kinds of fluidised forms: layer due to the presence of viscous force in fluid flowing
Stream and turbulent flow.So-called laminar flow refers to that particle does not mix each other in fluid, the flowing of the linear form of motion profile.In contrast,
Turbulent flow refer to the physical quantity at any point in fluid have quickly significantly rise and fall and at any time with spatial position and become
Change, fluid is irregular between each layer fluid.
Reynolds number can be used as the standard of flow regime variation under normal conditions.Reynolds number value when generally by flowing state transition
Referred to as critical Reynolds number.As Reynolds number Re< 2300 be laminar condition, Re> 4000 be turbulent condition, is fallen between as transition
State.Fluid has the tendency that being converted into turbulent flow from laminar flow under actual conditions, and the in general fluid of transition state is also usually pressed
Turbulent condition is studied.Thus, measurement error of the pipeline under laminar condition is than the measurement error under turbulent condition
Want small.So in the present invention flow field can be integrated by the way that commutator segment is added in the gas of rectangle segmentation measurement chamber 11, make flow field
In laminar condition.
Specifically, as shown in Figure 1, gas segmentation measurement chamber 11 is three and is arranged in parallel.The gas
It includes runner cavity 111 that body, which divides measurement chamber 11, and it is (described that multiple parallel reticles 6 are provided in the runner cavity 111
Reticle 6 is inserted into the runner cavity 111, and the interior space of the runner cavity 111 is divided into multiple spaces), in institute
The two sides for stating runner cavity 111 are oppositely arranged ultrasonic probe 9.
In the present invention, perforation bayonet 112 is opened up respectively in the two sides of the runner cavity 111, the ultrasonic probe 9 is pacified
Loaded in the perforation bayonet 112.In practical operation, probe mount 8, the ultrasound can be set in the perforation bayonet 112
Wave probe 9 is installed in the probe mount 8, and fixed by probe cover board 10.In each gas segmentation measurement chamber 11, surpass
Sonic probe 9 is to be oppositely arranged, i.e., issues signal by the ultrasonic probe of one end, be mapped to the other end by runner cavity 111
Ultrasonic probe, and signal is received by the ultrasonic probe of the other end.
In addition, further including the distributing damper 12 for being set to three gas segmentation 11 front ends of measurement chamber, the distributing damper 12
The gas distribution of inflow is directed respectively into the gas segmentation measurement chamber 11 can also be to entrance during to gas distribution
The gas flow pattern of disturbance rectified.
As shown in Figure 1, further including the rear cover 1 for being set to three gas segmentation 11 rear ends of measurement chamber in the present invention.Described
Is additionally provided with back cover baffle 4 between rear cover 1 and gas segmentation measurement chamber 11, the rear cover 1 and the back cover baffle 4 it
Between be additionally provided with silica gel sealing ring 3.It is opened up in the back cover baffle 4 there are three through-hole 41, the three gas segmentation is measured
Chamber 11, which respectively corresponds, to be installed at three through-holes 41, and the open rearward end of the runner cavity 111 of gas segmentation measurement chamber 11
It is communicated with the through-hole 41.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (8)
1. a kind of more card slot type ultrasonic flow rate measurement devices, including gas flow path, metering module and computing module, feature exist
In the gas flow path includes multiple mutually independent gas segmentation measurement chambers, is arranged oppositely in each gas segmentation measurement chamber
Two ultrasonic probes；
When gas flows through each gas segmentation measurement chamber, the biography between two ultrasonic probe sound waves is measured by the metering module
The defeated time；The computing module determines the gas of each gas segmentation measurement chamber according to the acoustic transit time that the metering module measures
Body flow, then calculate each gas and divide the sum of gas flow of measurement chamber and obtain total gas flow rate.
2. more card slot type ultrasonic flow rate measurement devices as described in claim 1, which is characterized in that the gas segmentation metering
Chamber is three and is arranged in parallel；
The gas segmentation measurement chamber includes runner cavity, and multiple parallel reticles are provided in the flow passage chamber body,
The two sides of the runner cavity are oppositely arranged ultrasonic probe.
3. more card slot type ultrasonic flow rate measurement devices as claimed in claim 2, which is characterized in that further include being set to three
Gas divides the distributing damper of measurement chamber front end, and the gas distribution of inflow is directed respectively into the gas point by the distributing damper
Cut measurement chamber.
4. more card slot type ultrasonic flow rate measurement devices as claimed in claim 2, which is characterized in that further include being set to three
The rear cover of gas segmentation metering cavity rear end.
5. more card slot type ultrasonic flow rate measurement devices as claimed in claim 4, which is characterized in that the rear cover with it is described
It is additionally provided with back cover baffle between gas segmentation measurement chamber, it is close to be additionally provided with silica gel between the rear cover and the back cover baffle
Seal.
6. more card slot type ultrasonic flow rate measurement devices as claimed in claim 5, which is characterized in that opened in the back cover baffle
If the three gas segmentation measurement chamber, which respectively corresponds, is installed on three through holes, and gas segmentation meter there are three through-hole
The open rearward end for measuring the runner cavity of chamber is communicated with the through-hole.
7. more card slot type ultrasonic flow rate measurement devices as claimed in claim 2, which is characterized in that the two of the runner cavity
Side opens up perforation bayonet respectively, and the ultrasonic probe is installed in the perforation bayonet.
8. more card slot type ultrasonic flow rate measurement devices as claimed in claim 7, which is characterized in that further include be set to it is described
The probe mount in bayonet is penetrated through, the ultrasonic probe is installed in the probe mount, and is fixed by cover board of popping one's head in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811370689.1A CN109579924A (en) | 2018-11-17 | 2018-11-17 | A kind of more card slot type ultrasonic flow rate measurement devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811370689.1A CN109579924A (en) | 2018-11-17 | 2018-11-17 | A kind of more card slot type ultrasonic flow rate measurement devices |
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| Publication Number | Publication Date |
|---|---|
| CN109579924A true CN109579924A (en) | 2019-04-05 |
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| CN201811370689.1A Pending CN109579924A (en) | 2018-11-17 | 2018-11-17 | A kind of more card slot type ultrasonic flow rate measurement devices |
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Citations (10)
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|---|---|---|---|---|
| JP2004233247A (en) * | 2003-01-31 | 2004-08-19 | Matsushita Electric Ind Co Ltd | Ultrasonic flowmeter |
| JP2005031034A (en) * | 2003-07-11 | 2005-02-03 | Matsushita Electric Ind Co Ltd | Ultrasonic flowmeter |
| CN201152879Y (en) * | 2006-10-26 | 2008-11-19 | 松下电器产业株式会社 | Ultrasonic type fluid measurement apparatus |
| CN101512302A (en) * | 2006-09-20 | 2009-08-19 | 松下电器产业株式会社 | Ultrasonic type fluid measurement device |
| CN101688800A (en) * | 2007-07-09 | 2010-03-31 | 松下电器产业株式会社 | Multilayer channel member of ultrasonic fluid measuring device and ultrasonic fluid measuring device |
| CN101782409A (en) * | 2009-01-14 | 2010-07-21 | 松下电器产业株式会社 | Flow path apparatus for fluid measuring |
| CN202994224U (en) * | 2012-06-01 | 2013-06-12 | 矢崎能源系统公司 | Flow measuring device |
| CN203657854U (en) * | 2012-09-07 | 2014-06-18 | 矢崎能源系统公司 | Flow measuring device |
| CN104704328A (en) * | 2012-10-10 | 2015-06-10 | 松下知识产权经营株式会社 | Flowmeter |
| CN103210287B (en) * | 2010-11-11 | 2015-09-30 | 松下知识产权经营株式会社 | Ultrasonic flow rate measurement device |
-
2018
- 2018-11-17 CN CN201811370689.1A patent/CN109579924A/en active Pending
Patent Citations (10)
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|---|---|---|---|---|
| JP2004233247A (en) * | 2003-01-31 | 2004-08-19 | Matsushita Electric Ind Co Ltd | Ultrasonic flowmeter |
| JP2005031034A (en) * | 2003-07-11 | 2005-02-03 | Matsushita Electric Ind Co Ltd | Ultrasonic flowmeter |
| CN101512302A (en) * | 2006-09-20 | 2009-08-19 | 松下电器产业株式会社 | Ultrasonic type fluid measurement device |
| CN201152879Y (en) * | 2006-10-26 | 2008-11-19 | 松下电器产业株式会社 | Ultrasonic type fluid measurement apparatus |
| CN101688800A (en) * | 2007-07-09 | 2010-03-31 | 松下电器产业株式会社 | Multilayer channel member of ultrasonic fluid measuring device and ultrasonic fluid measuring device |
| CN101782409A (en) * | 2009-01-14 | 2010-07-21 | 松下电器产业株式会社 | Flow path apparatus for fluid measuring |
| CN103210287B (en) * | 2010-11-11 | 2015-09-30 | 松下知识产权经营株式会社 | Ultrasonic flow rate measurement device |
| CN202994224U (en) * | 2012-06-01 | 2013-06-12 | 矢崎能源系统公司 | Flow measuring device |
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