CN201804022U - Paired penetrating type ultrasonic flue gas flow velocity measuring instrument - Google Patents
Paired penetrating type ultrasonic flue gas flow velocity measuring instrument Download PDFInfo
- Publication number
- CN201804022U CN201804022U CN2009202934871U CN200920293487U CN201804022U CN 201804022 U CN201804022 U CN 201804022U CN 2009202934871 U CN2009202934871 U CN 2009202934871U CN 200920293487 U CN200920293487 U CN 200920293487U CN 201804022 U CN201804022 U CN 201804022U
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- CN
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- Prior art keywords
- ultrasonic
- flue gas
- gas flow
- transreceivers
- flow velocity
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- Expired - Fee Related
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound 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[O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000003546 flue gas Substances 0.000 title claims abstract description 32
- 230000000149 penetrating Effects 0.000 title abstract 2
- 230000004323 axial length Effects 0.000 claims abstract 2
- 239000000523 sample Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 abstract description 10
- 238000005259 measurement Methods 0.000 abstract description 10
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000002604 ultrasonography Methods 0.000 description 11
- 239000007789 gas Substances 0.000 description 6
- 230000005284 excitation Effects 0.000 description 3
- 230000001702 transmitter Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000738 capillary electrophoresis-mass spectrometry Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000003068 static Effects 0.000 description 1
Abstract
A paired penetrating type ultrasonic flue gas flow velocity measuring instrument comprises two ultrasonic transreceivers and a control circuit, and is characterized in that the two ultrasonic transreceivers are respectively arranged on the upper air side and the lower air side of a flue gas pipeline to be measured; an ultrasonic propagation path is formed in the path of flue gas; probes of the ultrasonic transreceivers are connected to the control circuit in a control box through leads; a fixed angle theta is formed between the axial length direction of the ultrasonic transreceivers and the flue gas flow velocity direction; by generating a 40kHz electrical signal, the control circuit excites the ultrasonic transreceivers to generate an ultrasonic wave; the time difference of the ultrasonic wave transmission can be received and transmitted by the two ultrasonic transreceivers so as to calculate the velocity of flue gas fluid; and the instant flow rate can be calculated according to the cross area of the path through which the flue gas fluid passes. The utility model has the advantages of quick response to velocity measurement and wide measurement range, and is suitable for the ultrasonic flue gas flow velocity measuring instrument for measuring the flow velocity of the flue gas fluid by forming the ultrasonic propagation path in the flue gas flow path.
Description
Technical field
The utility model belongs to the measurement of gas flow rate, and particularly a kind of ultrasonic flue gas flow rate meter that adopts ultrasound wave to measure flue gas flow is applied in the environment monitoring industry.
Background technology
Be applied in mostly in the CEMS system of heating power factory and generating plant at present, mainly contain for the detection method of flue gas flow rate: measure the pressure differential in the fluid pitot tube, measure the methods such as thermal gas flowmeter of fluid thermal variable.
The principle of pitot tube gas meter is: come measurement flow rate by gaging pressure, during operation pitot tube is placed on center in the flue, make the mouth of pipe vertical, record the poor of this locational dynamic pressure and static pressure, thereby calculate the flow velocity of this point with the flue gas flow rate direction.Existing problems: for realizing the measurement of flow velocity, instrument need be equipped with pressure difference transmitter, especially in the measurement of minimum velocity (10m/s), because the pressure that pitot tube produces is very little, so measurement for low flow velocity, the pitot tube gas flow is in respect of the drawback of himself: low precision, can not survey the low speed flue gas, and often stop up.
The principle of thermal gas flowmeter is: utilize heat-conduction principle to detect flow, promptly concern by exchange heat between fluid in flowing and the thermal source and measure flow.Can draw mass rate Q from the ratio of the temperature difference of heating power and thermal source.Existing problems: the response speed of thermal gas flowmeter is longer relatively.
Summary of the invention
The purpose of this utility model is, shortcoming at above-mentioned flowmeter, propose to measure the method for crossing the certain distance required time, relate to the weather side and the downwind side that two ultrasonic transmitter-receivers are separately positioned on tested flue, receive to another ultrasonic transmitter-receiver by sending ultrasound wave from a ultrasonic transmitter-receiver, send ultrasound wave is measured flue gas flow to the former ultrasonic transmitter-receiver reception required time difference ultrasonic flow meter by another ultrasonic transmitter-receiver again, has response soon, the advantage that measurement range is wide to reach to test the speed.
The technical solution of the utility model is, a kind of to wearing the formula ultrasonic flue gas flow rate meter, constitute by two ultrasonic transmitter-receivers and control circuit, two ultrasonic transmitter-receivers are separately positioned on the weather side and the downwind side of tested flue, in the path of flue gas, form ultrasonic wave propagation path, the probe of ultrasonic transmitter-receiver is connected to control circuit in the control enclosure by lead, ultrasonic transmitter-receiver utilizes flange of self and the ring flange on the flue to be fixed on the flue, keeps the axis direction of two ultrasonic transmitter-receivers to become fixed angle θ with the flue gas flow rate direction.
Control circuit produces ultrasound wave by the electric signal excitation ultrasound ripple transceiver that produces 40kHz.
The utility model has the advantages that ultrasonic flue gas flow rate meter is used for the measurement of flue flue gas flow, have response soon, the advantage that measurement range is wide.Be applicable in the flue gas stream to form ultrasonic wave propagation path, measure the ultrasonic flue gas flow rate meter of flue gas rate of flow of fluid.
Description of drawings
Below in conjunction with drawings and Examples, the utility model is further described.
Fig. 1 is of the present utility model to wearing the organigram of formula ultrasonic flue gas flow rate meter
Among the figure, 1-flue, the ring flange on the 2-flue, 3-windward ultrasonic transmitter-receiver, 4-windward ultrasonic probe, 5-leeward ultrasonic probe, the flange of 6-ultrasonic transmitter-receiver, 7-control enclosure, 8-leeward ultrasonic transmitter-receiver
Embodiment
As seen from Figure 1, a kind of to wearing the formula ultrasonic flue gas flow rate meter, constitute by two ultrasonic transmitter-receivers and control circuit, windward ultrasonic transmitter-receiver 3 is arranged on the weather side of tested flue, leeward ultrasonic transmitter-receiver 8 is arranged on the downwind side of tested flue, in the path of flue gas, form ultrasonic wave propagation path, the windward ultrasonic probe 4 of ultrasonic transmitter-receiver and leeward ultrasonic probe 5 are connected to control circuit in the control enclosure separately 7 by lead, ultrasonic transmitter-receiver utilizes flange 6 of self and the ring flange 2 on the flue to be fixed on the flue, keeps the axis direction of two ultrasonic transmitter-receivers to become fixed angle θ with the flue gas flow rate direction.Control circuit produces ultrasound wave by the electric signal excitation ultrasound ripple transceiver that produces 40kHz.
Using method of the present utility model is, two ultrasonic transmitter-receivers play the function of transmitter and receiver respectively, and when side's ultrasonic transmitter-receiver used as transmitter, the opposing party used as receiver.Formed ultrasonic wave propagation path becomes the θ angle with the flow direction of fluid between two ultrasonic transmitter-receivers.When ultrasound wave following current body flow direction advances, its speed just accelerates, when ultrasound wave along advancing against fluid flow direction, its speed is just slack-off.Therefore, the electric signal excitation ultrasound ripple transceiver that control circuit produces 40kHz produces ultrasound wave, by the mistiming of control circuit by two ultrasonic transmitter-receiver transmitting-receivings of software records ultrasonic transmission, can obtain the speed of fluid.Obtain instantaneous delivery according to sectional area by stream.
Claims (1)
1. one kind to wearing the formula ultrasonic flue gas flow rate meter, constitute by two ultrasonic transmitter-receivers and control circuit, it is characterized in that, two ultrasonic transmitter-receivers are separately positioned on the weather side and the downwind side of tested flue, in the path of flue gas, form ultrasonic wave propagation path, the probe of ultrasonic transmitter-receiver is connected to control circuit in the control enclosure by lead, ultrasonic transmitter-receiver utilizes flange of self and the ring flange on the flue to be fixed on the flue, and the axial length direction of ultrasonic transmitter-receiver becomes fixed angle θ with the flue gas flow rate direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202934871U CN201804022U (en) | 2009-12-18 | 2009-12-18 | Paired penetrating type ultrasonic flue gas flow velocity measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202934871U CN201804022U (en) | 2009-12-18 | 2009-12-18 | Paired penetrating type ultrasonic flue gas flow velocity measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201804022U true CN201804022U (en) | 2011-04-20 |
Family
ID=43873523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202934871U Expired - Fee Related CN201804022U (en) | 2009-12-18 | 2009-12-18 | Paired penetrating type ultrasonic flue gas flow velocity measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201804022U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106110454A (en) * | 2016-06-01 | 2016-11-16 | 淮南市宜留机械科技有限公司 | A kind of nebulizer deters plug trustship pedestal |
| CN108732379A (en) * | 2017-04-13 | 2018-11-02 | 西克工程有限公司 | Measuring device for the flow velocity for measuring fluid |
-
2009
- 2009-12-18 CN CN2009202934871U patent/CN201804022U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106110454A (en) * | 2016-06-01 | 2016-11-16 | 淮南市宜留机械科技有限公司 | A kind of nebulizer deters plug trustship pedestal |
| CN108732379A (en) * | 2017-04-13 | 2018-11-02 | 西克工程有限公司 | Measuring device for the flow velocity for measuring fluid |
| CN108732379B (en) * | 2017-04-13 | 2020-10-02 | 西克工程有限公司 | Measuring device for measuring the flow rate of a fluid |
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