CN207515851U - A kind of novel precession Vortex flow device suitable for variable grain concentration gases - Google Patents
A kind of novel precession Vortex flow device suitable for variable grain concentration gases Download PDFInfo
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- CN207515851U CN207515851U CN201721493679.8U CN201721493679U CN207515851U CN 207515851 U CN207515851 U CN 207515851U CN 201721493679 U CN201721493679 U CN 201721493679U CN 207515851 U CN207515851 U CN 207515851U
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- piezoelectric transducer
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- flow passage
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Abstract
The utility model discloses a kind of novel precession Vortex flow devices suitable for variable grain concentration gases.Gas particles concentration detector is arranged on the preposition pipeline before housing, is entered in the inner flow passage of housing by the tested gas of gas particles concentration detector, inner flow passage is equipped with pipe cyclone and despinner；Gas particles concentration detector is connected to display and processing unit；Circuit switching device is arranged in case top, and circuit switching device one end is connected to display and processing unit, and the circuit switching device other end is connect respectively with three piezoelectric transducers, and piezoelectric transducer sound end is extended down into housing inner flow passage.The utility model to the position of piezoelectric transducer and default instrument coefficient correct and switch automatically according to different gas particles concentration, to achieve the purpose that precise determination flow.
Description
Technical field
The utility model is related to a kind of novel precession Vortex flow devices, specifically a kind of dense suitable for variable grain
Degree gas automatically adjusts default instrument coefficient and the precession vortex flow apparatus of piezoelectric transducer position.
Background technology
Precession vortex flow apparatus also plays an increasingly important role in daily life.In many industrialization fields
In, precession vortex flow machine also plays essential effect, and the flow measurement device of chemical field not only maintains chemistry
Stablizing for reaction carries out and also avoids unnecessary waste and danger.But traditional precession vortex flow on the market now
The use environment that device is adapted to is relatively simple, and the levels of precision measured receives environmental condition strong influence.
Such as in the larger building site of gas particles concentration or industrial production, due to particle to gas inside flowmeter
The influence of flowing, the accuracy that traditional precession vortex flow apparatus measures can generate great decline, and flowmeter presets instrument
It coefficient and differs greatly in the instrument coefficient of practical granule density gas, directly results in the huge deviation of measurement result.It is inaccurate
Flow measurement can cause huge hidden danger and peril in industrial production.It is suitable the utility model proposes one kind based on this
Default instrument coefficient and the precession vortex flow dress of piezoelectric transducer position are automatically adjusted for variable grain concentration gases
It puts.
Utility model content
The utility model is in view of the above-mentioned problems, propose a kind of pre- suitable for automatically adjusting for variable grain concentration gases
If instrument coefficient and the precession vortex flow apparatus of piezoelectric transducer position.
The technical solution of the utility model is：
The utility model includes gas particles concentration detector, housing, alarm lamp, pipe cyclone, piezoelectric transducer I, piezoelectricity
Sensor II, piezoelectric transducer III, circuit switching device and despinner；Before gas particles concentration detector is arranged in before housing
It puts on pipeline, the arrival end connection of preposition pipeline is connected with suction flange, and housing outlet end is connected with outlet(discharge) flange, passes through gas
The tested gas of granule density detector enters in the inner flow passage of housing, and the arrival end and the port of export of inner flow passage have been equipped with rotation respectively
Device and despinner；Gas particles concentration detector is connected to the Particle Concentration Signals of display and processing unit by data line
Input interface；Circuit switching device is arranged in case top, and circuit switching device one end is connected through piezoelectric transducer master control line
It is transmitted respectively through piezoelectric transducer to display and the circuit switching signal output interface of processing unit, the circuit switching device other end
After line I, piezoelectric transducer transmission line II and piezoelectric transducer transmission line III with piezoelectric transducer I, piezoelectric transducer II and piezoelectricity
Sensor III connects, and piezoelectric transducer I, piezoelectric transducer II and piezoelectric transducer III are installed in case top, piezoelectric sensing
Device sound end is extended down into housing inner flow passage.
The gas particles concentration value of detection is transferred to aobvious by the gas particles concentration detector by data line
Show and processing unit in, display and processing unit in store corresponding master meter coefficient under gas with various granule density, lead to
It crosses the gas particles concentration value detected by gas particles concentration detector and selectes corresponding master meter coefficient as default instrument
Table coefficient.
Piezoelectric transducer I, piezoelectric transducer II and the piezoelectric transducer III is axial from arrival end along housing inner flow passage
To outlet extreme direction arranged for interval, piezoelectric transducer I, piezoelectric transducer II and piezoelectric transducer III are respectively used to measure normal
The vortex core frequency of grain concentration, medium grain concentration and high granule density gas.
The piezoelectric transducer passes through gas particles concentration using the fluctuating frequency of pressure that itself is acquired as vortex core frequency
Detector collects gas particles concentration value, finds default instrument coefficient according to gas particles concentration value correspondence, passes through vortex core frequency
Rate and default instrument coefficient calculate the flow of tested gas and are shown in display and processing unit.
Be also equipped with temperature sensor on the housing, across housing on the mounting hole that sets extend into the interior stream of housing
In road, temperature sensor is connected to through temperature sensor transmission line in display and processing unit.
Present utility model application people is found through experiments that：Vortex is generated by the gas of pipe cyclone, vortex passes into shell
Contraction section, throat and the expansion segment of internal runner cause vortex core to shift, as shown in figure 3, normal granules concentration gases vortex core
Trajectory bias is at piezoelectric transducer I, and for medium grain concentration gases vortex core trajectory bias at piezoelectric transducer II, high particle is dense
Gas vortex core trajectory bias is spent at piezoelectric transducer III.
The utility model, will according to the variable grain concentration gases value that vortex core shifts under precession vortex flow apparatus
Surveyed gas particles concentration is divided into four major class：1st, granule density is more than 0mg/m3And less than 1.5mg/m3When be normal granules concentration
It measures；2nd, granule density is more than 1.5mg/m3And less than 10mg/m3When be medium grain measurement of concetration；3rd, granule density is more than
10mg/m3And less than 50mg/m3Shi Weigao granule densities measure；4th, granule density is more than 50mg/m3When beyond flowmeter it is accurate
Measurement range.Among assigning to four classes by the tested gas particles concentration value that gas particles concentration detector detects, per a kind of
Default instrument coefficient (can determine that both sides relation is obtained according to experimental fit) is corresponding with, and generates corresponding output signal, is passed through
Signal is transported in circuit switching device by circuit switching output interface 18 and piezoelectric transducer master control line.
Piezoelectric transducer transmission line I, piezoelectric transducer are transmitted as shown in figure 5, circuit switching device receives output signal
Line II and III three-line of piezoelectric transducer transmission line are automatically switched, to ensure that any moment only has a most suitable inspection
Other two lines roads of line clear are surveyed to be turned off.
As shown in Figure 1, alarm lamp is installed at the top of gas particles concentration detector, when gas particles concentration detector is examined
The granule density for measuring tested gas is more than 50mg/m3When, the excessive granule density of the gas has been more than that flowmeter accurately measures
Range, alarm lamp start flicker alarm.
Circuit switching device will consider its relative position on housing in arrangement, should match with shell dimension.
The length of piezoelectric transducer I, piezoelectric transducer II and piezoelectric transducer III will match with the size of housing inner flow passage, subtract
It is few that gas flow field is had an impact.The size of pipe cyclone and despinner will be with the size phase of housing inner flow passage
Match.
The utility model has technical effect that：
The utility model will not influence tested gas flow measurement by the gas particles concentration of measured environment, realize
A kind of precession rotation for automatically adjusting default instrument coefficient and piezoelectric transducer position suitable for variable grain concentration gases
Whirlpool flow apparatus ensures to reduce the potential risk that accident occurs in industrial production while measurement accuracy.
Description of the drawings
Fig. 1 is the total view of novel precession Vortex flow device measuring system；
Fig. 2 is novel precession Vortex flow device measuring system semi-cutaway；
Fig. 3 is three kinds of granule density gas vortex core track schematic diagrams；
Fig. 4 is circuit switching system detail figure；
Fig. 5 is novel precession Vortex flow device overall diagram.
In figure：Suction flange 1, gas particles concentration detector 2, alarm lamp 3, data line 4, housing 5, pipe cyclone 6,
Piezoelectric transducer I 7, piezoelectric transducer II 8, piezoelectric transducer III 9, circuit switching device 10, piezoelectric transducer master control line 11,
Temperature sensor 12, despinner 13, outlet(discharge) flange 14, display and processing unit 15, resultant signal output interface 16, granule density letter
Number input interface 17, circuit switching signal output interface 18, pressure sensor 19, normal granules concentration gases vortex core track 20,
Medium grain concentration gases vortex core track 21, high granule density gas vortex core track 22, piezoelectric transducer transmission line I 23, piezoelectricity
Sensor transmissions line II 24, piezoelectric transducer transmission line III 25, temperature sensor transmission line 26.
Specific embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
As shown in Figure 1, the utility model specific implementation includes gas particles concentration detector 2, housing 5, alarm lamp 3, rises
Spigot 6, piezoelectric transducer I 7, piezoelectric transducer II 8, piezoelectric transducer III 9, circuit switching device 10 and despinner 13；Gas
Granule density detector 2 is arranged on the preposition pipeline before housing 5, and the arrival end connection of preposition pipeline is connected with suction flange 1,
5 port of export of housing is connected with outlet(discharge) flange 19, and gas particles concentration detector 2 is used to detect the granule density of tested gas, leads to
The tested gas for crossing gas particles concentration detector 2 enters in the inner flow passage of housing 5, arrival end and the port of export difference of inner flow passage
It is equipped with pipe cyclone 6 and despinner 13；Gas particles concentration detector 2 is connected to display and processing unit by data line 4
15 Particle Concentration Signals input interface 17.
As shown in figure 4, circuit switching device 10 is arranged in 5 top of housing, 10 one end of circuit switching device is through piezoelectric sensing
Device master control line 11 is connected to the circuit switching signal output interface 18 of display and processing unit 15, and circuit switching device 10 is another
One end respectively after piezoelectric transducer transmission line I 23, piezoelectric transducer transmission line II 24 and piezoelectric transducer transmission line III 25 with
Piezoelectric transducer I 7, piezoelectric transducer II 8 and piezoelectric transducer III 9 connect, piezoelectric transducer transmission line I 23 and piezoelectric transducer
I 7 are connected, and piezoelectric transducer transmission line II 24 is connected with piezoelectric transducer II 8, piezoelectric transducer transmission line III 25 and piezoelectric sensing
Device III 9 is connected, and piezoelectric transducer I 7, piezoelectric transducer II 8 and piezoelectric transducer III 9 are installed in 5 top of housing, piezoelectric sensing
14 sound end of device is extended down into 5 inner flow passage of housing.
As shown in figure 5, be also equipped with temperature sensor 12 on housing 5, across housing 5 on the mounting hole that sets extend into shell
In the inner flow passage of body 5, temperature sensor 12 is connected to through temperature sensor transmission line 26 in display and processing unit 15, display and
Processing unit 15 is equipped with Regulate signal output interface 10, and temperature sensor transmission line 26 is connected to Regulate signal output interface
10。
Display and processing unit 15 are equipped with resultant signal output interface 16, and resultant signal output interface 16 is connected to external control
Platform processed, to achieve the purpose that all detection datas importing console.
Gas particles concentration detector 2 by the gas particles concentration value of detection by data line 4 be transferred to display and
In processing unit 15, corresponding master meter coefficient under gas with various granule density is stored in display and processing unit 15, is led to
It crosses the gas particles concentration value detected by gas particles concentration detector 2 and selectes corresponding master meter coefficient as default instrument
Table coefficient.
As shown in figure 4, piezoelectric transducer I 7, piezoelectric transducer II 8 and piezoelectric transducer III 9 are axial along 5 inner flow passage of housing
From arrival end to outlet extreme direction arranged for interval, piezoelectric transducer I 7, piezoelectric transducer II 8 and piezoelectric transducer III 9 are used respectively
In the vortex core frequency for measuring normal granules concentration, medium grain concentration and high granule density gas.
Gas particles concentration value is transferred to novel precession Vortex flow device in the form of different frequency pulse voltage signal
Processor in, processor classifies simultaneously to the granule density of detected gas according to the voltage signal of different ripple frequencies
Export different frequency and the voltage signal of amplitude：Granule density is more than 0mg/m3And less than 1.5mg/m3When be normal granules concentration
It measures, in the voltage signal to circuit automatic switching control equipment of output low frequency rate and low amplitude value；Granule density is more than 1.5mg/m3And
Less than 10mg/m3When for medium grain measurement of concetration, the voltage signal of output low frequency rate amplitude to circuit automatic switching control equipment
In；Granule density is more than 10mg/m3And less than 50mg/m3Shi Weigao granule densities measure, and export the voltage of high-frequency and amplitude
In signal to circuit automatic switching control equipment；Granule density is more than 50mg/m3When beyond the accurate measurement range of flowmeter, arteries and veins will be exported
It rushes in voltage signal to alarm lamp, alarm lamp, which lights, not to be exported in any signal to circuit automatic switching control equipment, and flowmeter stops
Work.
When circuit automatic switching control equipment receives the voltage signal of low frequency and low amplitude value, circuit automatic switching control equipment will
Piezoelectric transducer transmission line I is connected, piezoelectric transducer transmission line II disconnects the piezoelectricity made with piezoelectric transducer transmission line III and passes
Sensor I starts to measure, and piezoelectric transducer II is with piezoelectric transducer III without measuring；When circuit automatic switching control equipment receive it is low
During the voltage signal of frequency amplitude, circuit automatic switching control equipment will turn on piezoelectric transducer transmission line II, and piezoelectric transducer passes
Defeated line I disconnects the piezoelectric transducer II made with piezoelectric transducer transmission line III and starts to measure, piezoelectric transducer I and piezoelectric sensing
Device III is without measuring；When circuit automatic switching control equipment receives the voltage signal of high-frequency and amplitude, circuit is cut automatically
Changing device will turn on piezoelectric transducer transmission line III, and piezoelectric transducer transmission line II is disconnected with piezoelectric transducer transmission line I to be made
Piezoelectric transducer III start to measure, piezoelectric transducer II and piezoelectric transducer I are without measuring.
The fluctuating frequency of pressure that piezoelectric transducer 7,8,9 acquires itself passes through gas particles concentration as vortex core frequency
Detector 2 collects gas particles concentration value, finds default instrument coefficient according to gas particles concentration value correspondence, passes through vortex core frequency
Rate and default instrument coefficient calculate the flow of tested gas and are shown in display and processing unit 15, to reach Accurate Determining
The purpose of variable grain concentration gases flow.
It is specifically calculated with the following formula by vortex core frequency and default instrument coefficient and obtains gas flow：
Q=f/K
Wherein, Q represents flow, and f represents vortex core frequency, and K represents default instrument coefficient.
The position of piezoelectric transducer and default instrument coefficient are carried out according to different gas particles concentration it is automatic correct and
Switching, to achieve the purpose that precise determination flow.
Claims (3)
1. a kind of novel precession Vortex flow device suitable for variable grain concentration gases, it is characterised in that：Including gas
Grain concentration detector (2), housing (5), alarm lamp (3), pipe cyclone (6), piezoelectric transducer I (7), piezoelectric transducer II (8), pressure
Electric transducer III (9), circuit switching device (10) and despinner (13)；Gas particles concentration detector (2) is arranged in housing (5)
On preceding preposition pipeline, the arrival end connection of preposition pipeline is connected with suction flange (1), housing (5) port of export and outlet(discharge) flange
(19) it is connected, is entered in the inner flow passage of housing (5) by the tested gas of gas particles concentration detector (2), inner flow passage enters
Mouth end and the port of export are equipped with pipe cyclone (6) and despinner (13) respectively；Gas particles concentration detector (2) passes through data line
(4) it is connected to the Particle Concentration Signals input interface (17) of display and processing unit (15)；Circuit switching device (10) is arranged in
At the top of housing (5), circuit switching device (10) one end is connected to display and processing unit through piezoelectric transducer master control line (11)
(15) circuit switching signal output interface (18), circuit switching device (10) other end is respectively through piezoelectric transducer transmission line I
(23), piezoelectric transducer transmission line II (24) and piezoelectric transducer transmission line III (25) pass afterwards with piezoelectric transducer I (7), piezoelectricity
Sensor II (8) and piezoelectric transducer III (9) connection, piezoelectric transducer I (7), piezoelectric transducer II (8) and piezoelectric transducer III
(9) it is installed at the top of housing (5), piezoelectric transducer (14) sound end is extended down into housing (5) inner flow passage.
2. a kind of novel precession Vortex flow device suitable for variable grain concentration gases according to claim 1,
It is characterized in that：Piezoelectric transducer I (7), piezoelectric transducer II (8) and the piezoelectric transducer III (9) is along housing (5) inner flow passage
Axially from arrival end to outlet extreme direction arranged for interval.
3. a kind of novel precession Vortex flow device suitable for variable grain concentration gases according to claim 1,
It is characterized in that：Be also equipped with temperature sensor (12) on the housing (5), across housing (5) on the mounting hole that sets stretch into
Into the inner flow passage of housing (5), temperature sensor (12) is connected to display and processing unit through temperature sensor transmission line (26)
(15) in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721493679.8U CN207515851U (en) | 2017-11-10 | 2017-11-10 | A kind of novel precession Vortex flow device suitable for variable grain concentration gases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721493679.8U CN207515851U (en) | 2017-11-10 | 2017-11-10 | A kind of novel precession Vortex flow device suitable for variable grain concentration gases |
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| Publication Number | Publication Date |
|---|---|
| CN207515851U true CN207515851U (en) | 2018-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721493679.8U Active CN207515851U (en) | 2017-11-10 | 2017-11-10 | A kind of novel precession Vortex flow device suitable for variable grain concentration gases |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764341A (en) * | 2017-11-10 | 2018-03-06 | 浙江理工大学 | Suitable for the new vortex precession flowmeter of variable grain concentration gases |
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2017
- 2017-11-10 CN CN201721493679.8U patent/CN207515851U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764341A (en) * | 2017-11-10 | 2018-03-06 | 浙江理工大学 | Suitable for the new vortex precession flowmeter of variable grain concentration gases |
| CN107764341B (en) * | 2017-11-10 | 2023-08-29 | 浙江理工大学 | Novel precession vortex flowmeter applicable to gases with different particle concentrations |
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