CN206056688U - A kind of ultrasound wave flue gas flow meter and its sensor silencing apparatus - Google Patents
A kind of ultrasound wave flue gas flow meter and its sensor silencing apparatus Download PDFInfo
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- CN206056688U CN206056688U CN201621042695.0U CN201621042695U CN206056688U CN 206056688 U CN206056688 U CN 206056688U CN 201621042695 U CN201621042695 U CN 201621042695U CN 206056688 U CN206056688 U CN 206056688U
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Abstract
This utility model provides a kind of ultrasound wave flue gas flow meter and its sensor silencing apparatus.Silencing apparatus include silencing apparatus body；The silencing apparatus body is the silencing apparatus body for being cylindrical in shape setting；The silencing apparatus body offers first through hole and the second through hole；The first through hole and the second through hole axially penetrate through the silencing apparatus body along the silencing apparatus body.Silencing apparatus make the remained shock energy attenuation that sensor sends.Silencing apparatus may be selected the material of vibration-absorptive material, and the remained shock energy of Absorbing Sensor, then SN ratios when measuring are improved.Also, as the silencing apparatus body offers the second through hole, silencing apparatus body construction is more uniformly distributed to be stablized, and the surface area of silencing apparatus is considerably increased by opening up through hole so that the remained shock ability of its Absorbing Sensor has obtained effective raising.And the silencing apparatus can be made using high-temperature silica gel material, and more preferably, corrosion resistance is strong for effectiveness in vibration suppression so that detection device stably can be worked under hot and humid for a long time.
Description
Technical field
The present invention relates to testing equipment field, disappears in particular to a kind of ultrasound wave flue gas flow meter and its sensor
Acoustic device.
Background technology
It is problem that many supervision departments attach great importance to the accurate detection of the discharge capacity of gaseous state, particulate matter etc., at present, greatly
Apply flue gas automatic monitored control system (the Continuous Emission Monitoring in Thermal Plant and power plant more
System, CEMS), the difficulties and problems faced during measuring flow are a lot：High temperature, high dust, high moisture content, negative pressure and corrosion
Property is stronger etc.；Working condition is typically：At 150 DEG C or so, the First air or secondary wind of steam power plant typically exist flue gas medium temperature
200 DEG C, there are individually 400 DEG C or so, the method for existing measurement flow mainly includes：
Pitotpre ure difference method：By measure differences in pressure come calculated flow rate, during when measurement be placed on pitot tube in flue
Heart position, makes the mouth of pipe vertical with flue gas flow direction, measures the difference of dynamic pressure on the position and static pressure, so as to calculate the point
Flow.
Fluid thermal quantity method：When fluid flows through thermal objects, the heat of thermal objects scatters and disappears and with the flow of fluid be in how much
Certain proportionate relationship, calculates outflow with dispersed heat by the proportionate relationship.There is measurement essence in both metering systems
Degree is poor, realize relatively complicated problem.
And the use of ultrasonic flowmeter is ideal method.Have known to existing ultrasonic flowmeter respectively in connecting rod
Upstream and the ultrasonic transmitter-receiver in connecting rod downstream.Two when flow direction and opposite direction to making ultrasonic wave direction fluid is transmitted
Delivery time is measured, and the flow velocity of fluid is calculated based on the delivery time.In this effusion meter, from surpassing that transmitter sends
Sound wave reaches the fluid transmission ripple of receptor as transmitting in a fluid, is sent to then passing for connecting rod for receptor by connecting rod
Ripple is sent also to can reach receptor.Fluid transmission ripple is the signal required for measuring, and connecting rod transmission ripple is Chong Die with component of signal
Noise component(s).
The noise component(s) that connecting rod remained shock itself is produced is higher, and signal noise ratio (SZ) is lower, affects the accurate of testing result
Property.
The content of the invention
In view of this, the technical problem to be solved in the present invention is the defect for overcoming prior art, there is provided a kind of ultrasound
The silencing apparatus of ripple flue gas flow flowmeter sensor, including silencing apparatus body；The silencing apparatus body is to be cylindrical in shape setting
Silencing apparatus body；The silencing apparatus body offers first through hole and the second through hole；The first through hole and the second through hole
The silencing apparatus body is axially penetrated through along the silencing apparatus body.
In some embodiments, second through hole is placed in the week side of boss of the first through hole.
In some embodiments, second through hole is uniformly distributed in the week side of boss of the first through hole.
In some embodiments, second through hole is even number.
In some embodiments, the spacing between adjacent second through hole is identical.
In some embodiments, the silencing apparatus are silencing apparatus made by silica gel.
In some embodiments, the silencing apparatus body includes the first layer of silica gel and the second layer of silica gel；Described second
Outer circumferential side of the layer of silica gel around first layer of silica gel.
Present invention also offers a kind of ultrasound wave flue gas flow meter, including the noise elimination dress of ultrasound wave flue gas flow flowmeter sensor
Put.
In some embodiments, including fixed component；The fixed component is connected with controller and detection device；It is described
Detection device includes that the first ultrasonic emitting that connecting rod and interval are placed on the connecting rod receives sensor and the second ultrasound wave
Transmitting receives sensor；The connecting rod is hinged with the fixed component；First ultrasonic emitting receives sensor and described
It is L that second ultrasonic emitting receives the spacing between sensor；First ultrasonic emitting receives sensor and described second
Ultrasonic emitting receives sensor and is equipped with probe；First ultrasonic emitting is received the probe of sensor and the second is surpassed with described
Acoustic emission receives the probe of sensor and is oppositely arranged；The silencing apparatus are set in second ultrasonic emitting and receive sensing
The outer circumferential side of the probe of device；The controller is used to controlling first ultrasonic emitting and receives sensor and described second ultrasonic
Ripple transmitting receives sensor emission ultrasound wave, and the time point of record transmitting ultrasound wave records first ultrasonic emitting and receives
Sensor and second ultrasonic emitting receive the time point that sensor receives ultrasound wave.
In some embodiments, also include support and the controller one being connected with the fixed component integral type
The controller bay of body connection；First ultrasonic emitting receives sensor and second ultrasonic emitting receive sensor with
The connecting rod integrally connected.
The ultrasound wave flue gas flow meter and its sensor silencing apparatus of present invention offer is referring now to beneficial for prior art
Effect is：
Flue gas flow meter provided in the embodiment of the present invention, is cleverly changed to the structure of flue gas flow meter
Enter --- silencing apparatus.Flue gas flow meter transmits ripple W1 to measure to the delivery time in the gas for receiving ultrasound wave, is based on
In the ultrasonic flowmeter that the delivery time is measured to flow, gas transmission ripple W1 is the signal (signal point that should be detected
Amount S), connecting rod transmission ripple W2 is the noise (noise component(s) N) relative to signal.Therefore, if transmitting ripple W1's relative to gas
Energy (size or intensity), the energy (size or intensity) of connecting rod transmission ripple W2 are excessive, then gas transmission ripple W1 and company
The identification of bar transmission ripple W2 is difficult.As a result, gas transmission ripple W1 and pipe arrangement transmission ripple W 2 may be mistaken, mistakenly carry out
The measurement of delivery time, was measured to the flow of gas based on the delivery time of mistake.
Silencing apparatus make the remained shock energy attenuation that sensor sends.Specifically, shock absorbing process should be divided into two steps：Disappear first
Mixer 11 reduces the aftershock of sensor, furthermore, aftershock is reduced, and is also reduced therewith by the noise W2 of connecting rod 141.Eliminate the noise
Device may be selected the material of vibration-absorptive material, and the remained shock energy of Absorbing Sensor, then SN ratios when measuring are improved.
For example, in the case where the pressure of fluid is low, the signal energy of fluid transmission ripple is reduced, and SN is than reducing, but passes through
Silencing apparatus, can reduce the energy of connecting rod transmission ripple so as to suppress the reduction of SN ratios.
Also, as the silencing apparatus body offers the second through hole, silencing apparatus body construction is more uniformly distributed to be stablized, and
The surface area of silencing apparatus is considerably increased by opening up through hole so that the ability of the remained shock of its Absorbing Sensor has been obtained effectively
Raising.
Further, the silencing apparatus can be made using silica gel material, and comparatively, silica gel hardness can accomplish lower,
Effectiveness in vibration suppression is more preferably；High-temperature silica gel material is adopted simultaneously, and corrosion resistance is strong so that sensor can be also grown under hot and humid environment
Stably work long.
In sum, the special structure of the present invention, which has the advantages that above-mentioned many and practical value, and in like product
In there are no similar method and publish or use and really belong to innovation, generate handy and practical effect, more existing cigarette
Air-flow gauge has the multinomial effect promoted, and so as to more be suitable to practicality, and has extensive industrial value.
Accompanying drawing appended by coordinating, is described in detail below.
Description of the drawings
It should be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore it is not construed as to model
The restriction enclosed, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to these
Accompanying drawing obtains other related accompanying drawings.
Fig. 1 is the structural representation of the silencing apparatus of ultrasound wave flue gas flow meter of the present invention；
Fig. 2 is the structural representation of ultrasound wave flue gas flow meter of the present invention.
Drawing reference numeral explanation：
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In describing the invention, it is to be understood that term " length ", " width ", " on ", D score, "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward " is based on accompanying drawing institute
The orientation for showing or position relationship, are for only for ease of the description present invention and simplify description, rather than indicate or imply the dress of indication
Put or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the present invention limit
System.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In describing the invention, " multiple " are meant that two or more,
Unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or it is integral；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to concrete feelings
Condition understands above-mentioned term concrete meaning in the present invention.
Embodiment
A kind of silencing apparatus 11 of ultrasound wave flue gas flow meter 1 are embodiments provided, including silencing apparatus body
111；The silencing apparatus body 111 is the silencing apparatus body 111 for being cylindrical in shape setting；The silencing apparatus body 111 is opened up
There are first through hole 1111 and the second through hole 1112；The first through hole 1111 and the second through hole 1112 are along the silencing apparatus sheet
Body 111 axially penetrates through the silencing apparatus body 111.
It is above-mentioned, it is to be understood that flue gas flow meter is receiving the gas transmission ripple W1 of ultrasound wave to enter to the delivery time
Row is measured, and based in the ultrasonic flowmeter that the delivery time is measured to flow, gas transmission ripple W1 should be detected
Signal (component of signal S), the transmission ripple W2 of connecting rod 141 are the noises (noise component(s) N) relative to signal.Therefore, if relative to
Gas transmits the energy (size or intensity) of ripple W1, and the energy (size or intensity) of the transmission ripple W2 of connecting rod 141 is excessive, then
Gas transmits ripple W1 and the identification of the transmission ripple W2 of connecting rod 141 is difficult.As a result, gas transmission ripple W1 and pipe arrangement biography may be mistaken
Ripple W 2 is sent, the measurement of delivery time is mistakenly carried out, the flow of gas is measured based on the delivery time of mistake.
It is to be appreciated that shock absorbing process should be divided into two steps：Silencing means 11 reduce the aftershock of sensor first, then
Person, aftershock reduce, and are also reduced therewith by the noise W2 of connecting rod 141.In terms of comprehensive, i.e., silencing apparatus 11 pass connecting rod 141
Send the energy attenuation of ripple.Silencing apparatus 11 may be selected the material of vibration-absorptive material, absorbs the energy that connecting rod 141 transmits ripple, then measures
When SN than improve.
It is to be appreciated that in the case where the pressure of fluid is low, the signal energy of fluid transmission ripple is reduced, and SN is than drop
It is low, but by silencing apparatus 11, the energy of the transmission ripple of connecting rod 141 can be reduced so as to suppress the reduction of SN ratios.
It is to be appreciated that as the silencing apparatus body 111 offers the second through hole 1112, silencing apparatus body 111
Structure is more uniformly distributed to be stablized, and the surface area of silencing apparatus 11 is considerably increased by opening up through hole so which absorbs connecting rod 141
The ability of transmission ripple has obtained effective raising.
In embodiments of the present invention, second through hole 1112 is placed in the week side of boss of the first through hole 1111.
In embodiments of the present invention, second through hole 1112 is uniformly distributed in the week side of boss of the first through hole 1111.
In embodiments of the present invention, second through hole 1112 is even number.
In embodiments of the present invention, the spacing between adjacent second through hole 1112 is identical.
In embodiments of the present invention, the silencing apparatus 11 are silencing apparatus 11 made by silica gel.
Above-mentioned, the silencing apparatus 11 can be made using silica gel material, and comparatively, silica gel hardness can accomplish lower, subtract
Shake better；High-temperature silica gel material is adopted simultaneously, and corrosion resistance is strong so that sensor also can be permanent under hot and humid environment
Stably work.
In embodiments of the present invention, the silencing apparatus body 111 includes the first layer of silica gel 1113 and the second layer of silica gel
1114；Outer circumferential side of second layer of silica gel 1114 around first layer of silica gel 1113.
Present invention also offers a kind of ultrasound wave flue gas flow meter 1, including the silencing apparatus of ultrasound wave flue gas flow meter 1
11。
In embodiments of the present invention, including fixed component 12；The fixed component 12 is connected with controller 13 and detection dress
Put 14；The detection device 14 includes that the first ultrasonic emitting that connecting rod 141 and interval are placed on the connecting rod 141 is received and passes
Sensor 142 and the second ultrasonic emitting receive sensor 143；The connecting rod 141 is hinged with the fixed component 12；Described first
The spacing that ultrasonic emitting is received between sensor 142 and second ultrasonic emitting reception sensor is L；It is described the first to surpass
Acoustic emission receives sensor 142 and second ultrasonic emitting receives sensor 143 and is equipped with probe 144；Described first
The probe 144 of ultrasonic emitting reception sensor 142 is relative with the probe 144 that second ultrasonic emitting receives sensor to be set
Put；The silencing apparatus 11 are set in the outer circumferential side that second ultrasonic emitting receives the probe 144 of sensor 143；It is described
Controller 13 is used to control the first ultrasonic emitting reception sensor 142 and second ultrasonic emitting receives sensor
Transmitting ultrasound wave, the time point of record transmitting ultrasound wave record first ultrasonic emitting and receive sensor 142 and described the
Two ultrasonic emitting receive the time point that sensor receives ultrasound wave.
It is above-mentioned, based on said structure, when implementing, simple Function Extension need to be carried out only, just flue gas flow meter can be put
It is placed in the space of flue gas flow to be detected so that the first ultrasonic emitting receives sensor 142 and second ultrasound wave is sent out
Penetrate the flow of flue gas side received in transmission path and the space of the flue gas flow to be detected that ultrasound wave is transmitted between sensor
To into angle α, just can the Time Calculation according to used by ultrasound wave downbeam, countercurrent direction are transmitted in same intervals obtain to be checked
The flue gas flow surveyed in flue gas flow space.
In real work, in effusion meter, the distance between two sensors are set to L；The sound wave reality i.e. in the flue gas of flowing
The distance that border passes through.Angle [alpha] (0 ° of the theoretical value, it is allowed to most of known ultrasound wave speed of sound C, sound wave direction and flue gas flow direction
Large deviation angle is 8 °), then sound wave is T1 along the propagation time of gas flow direction：
T1=L/ (C+v cos α)
Sound wave is T2 against the propagation time of gas flow direction：
T2=L/ (C-v cos α)
Thus flue gas instantaneous velocity can be obtained be：
V=(L/2cos α) [(1/tv)-(1/tr)]
If the flow of gas is Q (m3/ s), the sectional area of complement COEFFICIENT K and flue gas be S (m2/ s), the flow Q of gas
=KVS.
Simultaneously because being provided with, the first ultrasonic emitting receives sensor 142 and the second ultrasonic emitting receives the company of sensor
Bar 141 is hinged with fixed component 12 so that connecting rod 141 can be rotated relative to fixed component 12.It is during actually used, fixed
After the insertion monitoring holes of part 12, under gravity, detection device 14 is then detected vertically downward, it is to avoid detection device 14
Touch chimney (flue) wall.And after monitoring flue gas flow, when taking out fixed component 12 from monitoring holes, detection device 14 can be stretched
Exit monitoring holes.Measuring method in the prior art is compared, simple structure, easy to implement, and degree of accuracy is higher, meets actual need
Ask.
Preferably, the fixed component 12 is connected with push rod；Push rod is connected with elastic away from one end of fixed component 12
Part；Elastomeric element is connected with limiting component away from one end of fixed component 12；Limiting component is away from one end of the elastomeric element
Abut towards one end of the fixed component 12 with the connecting rod 141.When this kind of structure causes detection device 14 vertically downward, push away
Bar is pushed away forward under spring force, so as to hold out against detection device 14, it is ensured that in measurement process, detection device 14 will not be because of
Flow of flue gas affects generation to rock.
In embodiments of the present invention, the support 15 that also includes being connected with 12 integral type of the fixed component, and the control
13 frame of controller of 13 integrally connected of device；First ultrasonic emitting receives sensor 142 and second ultrasonic emitting
Receive sensor 143 and 141 integrally connected of the connecting rod.
Obviously, those skilled in the art should be understood that the function of the above-mentioned embodiment of the present invention can be with general meter
Calculate device to realize, they can be concentrated on single computing device, or are distributed in the net constituted by multiple computing devices
On network, alternatively, they can be realized with the executable existing program code of computing device, it is thus possible to they are stored
In the storage device by computing device performing, or they are fabricated to each integrated circuit modules respectively, or by they
In multiple modules or step be fabricated to single integrated circuit module to realize.So, functions implementing the present invention are not restricted to
Any specific hardware and software is combined.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of sensor silencing apparatus of ultrasound wave flue gas flow meter, it is characterised in that：Including silencing apparatus body；It is described to disappear
Acoustic device body is the silencing apparatus body for being cylindrical in shape setting；The silencing apparatus body offers first through hole and second and leads to
Hole；The first through hole and the second through hole axially penetrate through the silencing apparatus body along the silencing apparatus body.
2. sensor silencing apparatus of ultrasound wave flue gas flow meter as claimed in claim 1, it is characterised in that：Described second leads to
Hole is placed in the week side of boss of the first through hole.
3. sensor silencing apparatus of ultrasound wave flue gas flow meter as claimed in claim 1, it is characterised in that：Described second leads to
Hole is uniformly distributed in the week side of boss of the first through hole.
4. sensor silencing apparatus of ultrasound wave flue gas flow meter as claimed in claim 1, it is characterised in that：Described second leads to
Hole is even number.
5. sensor silencing apparatus of ultrasound wave flue gas flow meter as claimed in claim 4, it is characterised in that：Adjacent described
Spacing between two through holes is identical.
6. sensor silencing apparatus of ultrasound wave flue gas flow meter as claimed in claim 1, it is characterised in that：The dress of eliminating the noise
It is set to silencing apparatus made by high-temperature silica gel.
7. sensor silencing apparatus of ultrasound wave flue gas flow meter as claimed in claim 6, it is characterised in that：The dress of eliminating the noise
Putting body includes the first layer of silica gel and the second layer of silica gel；Outer circumferential side of second layer of silica gel around first layer of silica gel.
8. a kind of ultrasound wave flue gas flow meter, it is characterised in that：Including the ultrasound wave described in any one in Claims 1 to 5
The sensor silencing apparatus of flue gas flow meter.
9. ultrasound wave flue gas flow meter as claimed in claim 8, it is characterised in that：Including fixed component；The fixed component
It is connected with controller and detection device；The detection device includes the first ultrasound wave that connecting rod and interval are placed on the connecting rod
Transmitting receives sensor and the second ultrasonic emitting receives sensor；The connecting rod is hinged with the fixed component；Described first
The spacing that ultrasonic emitting is received between sensor and second ultrasonic emitting reception sensor is L；Described first is ultrasonic
Ripple transmitting receives sensor and second ultrasonic emitting receives sensor and is equipped with probe；First ultrasonic emitting connects
The probe that the probe for receiving sensor receives sensor with second ultrasonic emitting is oppositely arranged；The silencing apparatus are set in
Second ultrasonic emitting receives the outer circumferential side of the probe of sensor；The controller is used to control first ultrasound wave
Penetrate reception sensor and second ultrasonic emitting receive sensor emission ultrasound wave, record launches the time point of ultrasound wave,
Record the first ultrasonic emitting reception sensor and second ultrasonic emitting receives sensor and receives ultrasound wave
Time point.
10. ultrasound wave flue gas flow meter as claimed in claim 9, it is characterised in that：Also include and fixed component one
The controller bay of the support and the controller integrally connected of formula connection；First ultrasonic emitting receives sensor and institute
State the second ultrasonic emitting and receive sensor and the connecting rod integrally connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621042695.0U CN206056688U (en) | 2016-09-07 | 2016-09-07 | A kind of ultrasound wave flue gas flow meter and its sensor silencing apparatus |
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| CN201621042695.0U CN206056688U (en) | 2016-09-07 | 2016-09-07 | A kind of ultrasound wave flue gas flow meter and its sensor silencing apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153133A (en) * | 2016-09-07 | 2016-11-23 | 深圳西大仪器有限公司 | A kind of ultrasound wave flue gas flow meter and sensor silencing apparatus thereof |
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2016
- 2016-09-07 CN CN201621042695.0U patent/CN206056688U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153133A (en) * | 2016-09-07 | 2016-11-23 | 深圳西大仪器有限公司 | A kind of ultrasound wave flue gas flow meter and sensor silencing apparatus thereof |
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