CN211206553U - Opposite-penetrating type ultrasonic gas flow velocity meter - Google Patents
Opposite-penetrating type ultrasonic gas flow velocity meter Download PDFInfo
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- CN211206553U CN211206553U CN202020007746.6U CN202020007746U CN211206553U CN 211206553 U CN211206553 U CN 211206553U CN 202020007746 U CN202020007746 U CN 202020007746U CN 211206553 U CN211206553 U CN 211206553U
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- Prior art keywords
- air outlet
- outlet pipe
- transducer
- blowing air
- ultrasonic
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- Expired - Fee Related
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- 238000007664 blowing Methods 0.000 claims abstract description 39
- 239000000428 dust Substances 0.000 abstract description 16
- 238000005259 measurement Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 11
- 239000011159 matrix material Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical class [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model is suitable for a sound wave speed measurement technical field provides a to wearing formula ultrasonic wave gas current meter, including transducer head, blowback outlet duct and ultrasonic transducer, blowback outlet duct fixed connection in the front end of transducer head, and with transducer head fixed connection, ultrasonic transducer with the outer wall fixed connection of transducer head; the flow velocity condition of the smoke is calculated according to the speed difference of sound waves in the downwind state and the upwind state, the problem that the traditional mode adopts a differential pressure method to measure the flow velocity which is easy to generate larger errors when the wind speed is lower or the wind speed is uneven is avoided, the other end of the head of the transducer is fixedly connected with a back blowing air outlet pipe, the other side of the back blowing air outlet pipe is fixed on an external fan, the fan blows air reversely towards the outside of the back blowing air outlet pipe, dust in the air is prevented from entering the back blowing air outlet pipe and being attached to the head of the transducer, and the dust or adhesive is prevented.
Description
Technical Field
The utility model belongs to the technical field of the sound wave tests the speed, especially, relate to a to wearing formula ultrasonic wave gas current meter.
Background
Existing measurement techniques include matrix measurement techniques: the differential pressure type flowmeter is formed by combining a plurality of groups or a plurality of differential pressure points. The principle used is the differential pressure principle. The matrix measurement has the following characteristics: a. compared with an S-shaped pitot tube, the matrix measurement adopts a multi-point measurement method, and can be primarily used for solving the problem of uneven flow field of a large flue; b. the matrix measurement can only acquire the linear flow velocity of one section, and the flow velocity cannot well represent the flow velocity condition of the section; c. the working principle of matrix measurement is still a differential pressure principle, and the back blowing cannot be carried out on occasions with sticky dust and can be blocked, so that the matrix measurement cannot be used on occasions lower than 5 m/s; d. the matrix measurement usually needs a very long straight pipe transverse flow quick break during installation, most industrial fields cannot meet the conditions, the installation cost and the maintenance cost are high, and only disassembly can be carried out but effective maintenance cannot be carried out.
Among the prior art, generally adopt the differential pressure formula principle to carry out the velocity of flow and measure, when the inside gas velocity of flow of flue is inhomogeneous or the wind speed is lower, measure through differential pressure type velocity of flow appearance fixed point and can lead to the testing result to have great error, and when measuring the speed, the dust in the air gets into measuring device along with the wind channel easily inside, leads to the inside jam of measuring device.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to wearing formula ultrasonic wave gas current meter, aim at solving prior art, generally adopt the differential principle to carry out the velocity of flow and measure, when the inside gas flow velocity of flue is inhomogeneous or the wind speed is lower, can lead to the testing result to have great error through differential current meter fixed point measurement, and when carrying out the speed measurement, inside dust in the air got into measuring device along with the wind channel easily, lead to the inside problem of blockking up of measuring device.
The utility model discloses a realize like this, a to wearing formula ultrasonic wave gas current meter, including transducer head, blowback outlet duct and ultrasonic transducer, blowback outlet duct fixed connection in the front end of transducer head, and with transducer head fixed connection, ultrasonic transducer with the outer wall fixed connection of transducer head.
Preferably, the back-blowing air outlet pipe is divided into two sections which are fixedly connected, wherein the diameter of the back-blowing air outlet pipe positioned at the bottom is larger than that of the back-blowing air outlet pipe positioned at the top.
Preferably, the ultrasonic transducer further comprises an ultrasonic transmitter and an ultrasonic receiver, and both the ultrasonic transmitter and the ultrasonic receiver are arranged on the transducer head.
Preferably, the back flushing air outlet pipe is positioned at the top of the back flushing air outlet pipe, a plurality of air outlet holes are formed in the middle of one end of the back flushing air outlet pipe, and the air outlet holes are arranged around the outer surface of the back flushing air outlet pipe at equal intervals.
Preferably, the top of the back-blowing air outlet pipe is provided with internal threads, and the air inlet straight pipe is in threaded connection with the top of the back-blowing air outlet pipe through the internal threads.
Preferably, the middle section of the air inlet straight pipe is sleeved with an adjusting flange, the adjusting flange is fixedly connected with the air inlet straight pipe, and a plurality of circular through holes are formed in the adjusting flange.
Preferably, the top of the air inlet straight pipe is provided with a small flange, and the small flange is fixedly connected with the air inlet straight pipe.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a to wearing formula ultrasonic wave gas current meter, through setting up the transducer head, the blowback outlet duct, ultrasonic transducer, during the use, to wearing two transducer heads to one side and installing in the flue, install ultrasonic transducer on the transducer head, through two ultrasonic transducer mutual transmission and receipt ultrasonic waves, calculate the velocity of flow condition of this flue gas at the speed difference in the same direction as wind and upwind state according to the sound wave, avoided traditional mode to adopt the differential pressure method to measure the problem that produces great error easily when the wind speed is lower or the wind speed is inhomogeneous. The other end fixedly connected with blowback outlet duct of transducer head, the blowback goes out the opposite side and is fixed in outside fan, and the fan is to the outer reverse blow of blowback outlet duct, avoids the dust in the air to get into inside attached to the transducer head of blowback outlet duct, prevents that the dust or adhesion from gluing in ultrasonic transducer surface and influencing its use.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic plan view of the present invention;
fig. 3 is a schematic view of the installation position of the present invention;
in the figure: 11. a transducer head; 12. a blowback air outlet pipe; 13. an air outlet; 14. an air inlet straight pipe; 15. adjusting the flange; 16. a small flange; 17. an ultrasonic transducer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, the present invention provides a technical solution: a through type ultrasonic gas flow velocity meter comprises a transducer head 11, a back-blowing air outlet pipe 12 and an ultrasonic transducer 17, wherein the back-blowing air outlet pipe 12 is fixedly connected to the front end of the transducer head 11 and fixedly connected with the transducer head 11, and the ultrasonic transducer 17 is fixedly connected with the outer wall of the transducer head 11.
In the embodiment, when in use, the two transducer heads 11 are symmetrically arranged in the flue, the orthogonal angle of the connecting line between the two transducer heads 11 is set between thirty degrees and sixty degrees, the ultrasonic transducers 17 are arranged on the transducer heads 11, ultrasonic waves are transmitted and received by the two ultrasonic transducers 17, the flow velocity condition of the flue gas is calculated according to the time velocity difference of sound waves in the downwind state and the upwind state, the problem that the traditional method adopts a pressure difference method to measure the large error easily caused by the low or uneven wind velocity is avoided, the other end of the transducer head 11 is fixedly connected with the back blowing air outlet pipe 12, the other side of the back blowing air outlet pipe 12 is fixed on an external fan, the fan blows air reversely to the air outlet holes 13 arranged on the back blowing air outlet pipe 12, and dust in the air is prevented from entering the back blowing air outlet pipe 12 and attaching to the transducer heads 11, causing the transducer head 11 to clog and preventing dust or adhesive from sticking to the surface of the ultrasonic transducer and affecting its use.
In this embodiment, one end of the transducer head 11 is fixedly connected with a back-blowing outlet pipe 12, the back-blowing outlet pipe 12 is divided into two sections, the two sections of back-blowing outlet pipes 12 are fixedly connected, wherein the diameter of the back-blowing outlet pipe 12 positioned at the bottom is larger than that of the back-blowing outlet pipe 12 positioned at the top, the top of the back-blowing outlet pipe 12 is provided with an internal thread, the air inlet straight pipe 14 is in threaded connection with the back-blowing outlet pipe 12 through the internal thread, the middle section of the air inlet straight pipe 14 is sleeved with an adjusting flange 15, the adjusting flange 15 is fixedly connected with the outer wall of the air inlet straight pipe 14, the top of the air inlet straight pipe 14 is also fixedly connected with a small flange 16, when in use, the two transducer heads 11 are symmetrically installed inside the flue through the adjusting flange 15, then the angle and the distance between the two transducer heads 11 are adjusted through the adjusting flange 15, the orthogonal angle, fixedly connected with ultrasonic transducer 17 on the other end of transducer head 11, through two ultrasonic transducer 17 mutual transmission and receipt ultrasonic waves, calculate the velocity of flow condition of this flue gas according to the sound wave velocity difference when the downwind is under and the upwind state, avoided traditional mode to adopt the pressure difference method to measure the problem that produces great error easily when the wind speed is lower or the wind speed is inhomogeneous, because the opposite side of blowback outlet duct 12 is fixed in outside fan, dust when in the outside air gets into blowback outlet duct 12 inside back, be connected fan and external power source, drive through the fan rotation and blow off dust and the greasy dirt that will get into blowback outlet duct 12 inside, it is attached to transducer head 11 after avoiding dust and greasy dirt to get into blowback outlet duct 12 inside, influence transducer head 11 work, the maintenance volume to transducer head 11 has also been reduced simultaneously.
Furthermore, the blowback air outlet pipe 12 is divided into two sections, the two sections of blowback air outlet pipes 12 are fixedly connected, wherein the diameter of the blowback air outlet pipe 12 positioned at the bottom is larger than that of the blowback air outlet pipe 12 positioned at the top.
In the embodiment, the back-blowing air outlet pipe 12 is arranged for blowing air outwards, and dust entering the back-blowing air outlet pipe 12 is blown away by an external fan, so that the problem that the dust falls on the head 11 of the transducer to pollute the head 11 of the transducer is avoided.
Further, the ultrasonic transducer 17 further includes an ultrasonic transmitter and an ultrasonic receiver, both of which are disposed on the transducer head 11.
In the embodiment, the ultrasonic transmitter is arranged to transmit ultrasonic waves, the ultrasonic receiver is used for receiving the ultrasonic waves, and the flow velocity of the flue gas is calculated according to the time velocity difference of the sound waves in the downwind state and the upwind state, so that the aim of measuring the wind speed is fulfilled.
Furthermore, a plurality of air outlet holes 13 are formed in the middle of one end of the back-blowing air outlet pipe 12, which is located at the top, and the air outlet holes 13 are arranged around the outer surface of the back-blowing air outlet pipe 12 at equal intervals.
In this embodiment, a plurality of air outlets 13 are disposed at the top of the blowback air outlet pipe 12 for blowing out the dust entering the blowback air outlet pipe 12, so as to prevent the dust from directly falling on the transducer head 11 and affecting the use of the transducer head 11.
Furthermore, the top of the blowback air outlet pipe 12 is provided with an internal thread, and the air inlet straight pipe 14 is in threaded connection with the top of the blowback air outlet pipe 12 through the internal thread.
In this embodiment, the air inlet straight pipe 14 is screwed with the top of the blowback air outlet pipe 12, so that the adjusting flange 15 can rotate on the air inlet straight pipe 14, thereby facilitating the adjustment of the installation position of the adjusting flange 15 and being applicable to different air channel environments.
Furthermore, the middle section cover of air inlet straight tube 14 is equipped with adjusting flange 15, adjusting flange 15 and air inlet straight tube 14 fixed connection, have seted up a plurality of circular through-holes on adjusting flange 15.
In the embodiment, the adjusting flange 15 is arranged for adjusting the installation position and angle so as to be suitable for different flue or channel environments, and the application range of the gas flow velocity meter is greatly enlarged.
Furthermore, a small flange 16 is arranged at the top of the air inlet straight pipe 14, and the small flange 16 is fixedly connected with the air inlet straight pipe 14.
In the present embodiment, an adjusting flange 15 is fixedly connected to the top of the intake straight pipe 14, and is used for mounting and fixing the gas flow rate meter, so that the gas flow rate meter is fixed inside the flue.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a to wearing formula ultrasonic wave gas velocity of flow appearance, includes transducer head (11), blowback outlet duct (12) and ultrasonic transducer (17), its characterized in that: the back-blowing air outlet pipe (12) is fixedly connected to the front end of the transducer head (11) and fixedly connected with the transducer head (11), and the ultrasonic transducer (17) is fixedly connected with the outer wall of the transducer head (11).
2. A through-type ultrasonic gas flow meter as claimed in claim 1, wherein: the back-blowing air outlet pipe (12) is divided into two sections, the two sections of back-blowing air outlet pipes (12) are fixedly connected, wherein the diameter of the back-blowing air outlet pipe (12) positioned at the bottom is larger than that of the back-blowing air outlet pipe (12) positioned at the top.
3. A through-type ultrasonic gas flow meter as claimed in claim 1, wherein: the ultrasonic transducer (17) further comprises an ultrasonic transmitter and an ultrasonic receiver, and the ultrasonic transmitter and the ultrasonic receiver are both arranged on the transducer head (11).
4. A through-type ultrasonic gas flow meter as claimed in claim 2, wherein: the back-blowing air outlet pipe (12) is positioned at the top, one end of the back-blowing air outlet pipe is provided with a plurality of air outlet holes (13), and the air outlet holes (13) are arranged around the outer surface of the back-blowing air outlet pipe (12) at equal intervals.
5. A through-type ultrasonic gas flow meter as claimed in claim 1, wherein: the top of the back-blowing air outlet pipe (12) is provided with internal threads, and the air inlet straight pipe (14) is in threaded connection with the top of the back-blowing air outlet pipe (12) through the internal threads.
6. A through-type ultrasonic gas flow meter as claimed in claim 5, wherein: the middle section of the air inlet straight pipe (14) is sleeved with an adjusting flange (15), the adjusting flange (15) is fixedly connected with the air inlet straight pipe (14), and a plurality of circular through holes are formed in the adjusting flange (15).
7. A through-type ultrasonic gas flow meter as claimed in claim 5, wherein: the top of the air inlet straight pipe (14) is provided with a small flange (16), and the small flange (16) is fixedly connected with the air inlet straight pipe (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020007746.6U CN211206553U (en) | 2020-01-03 | 2020-01-03 | Opposite-penetrating type ultrasonic gas flow velocity meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020007746.6U CN211206553U (en) | 2020-01-03 | 2020-01-03 | Opposite-penetrating type ultrasonic gas flow velocity meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211206553U true CN211206553U (en) | 2020-08-07 |
Family
ID=71888653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020007746.6U Expired - Fee Related CN211206553U (en) | 2020-01-03 | 2020-01-03 | Opposite-penetrating type ultrasonic gas flow velocity meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211206553U (en) |
-
2020
- 2020-01-03 CN CN202020007746.6U patent/CN211206553U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200807 |