CN208607248U - A kind of novel flue device for measuring flow speed of gas - Google Patents
A kind of novel flue device for measuring flow speed of gas Download PDFInfo
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- CN208607248U CN208607248U CN201821314742.1U CN201821314742U CN208607248U CN 208607248 U CN208607248 U CN 208607248U CN 201821314742 U CN201821314742 U CN 201821314742U CN 208607248 U CN208607248 U CN 208607248U
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Abstract
The utility model relates to a kind of novel flue device for measuring flow speed of gas, including control device, time measuring unit, ultrasonic transducer, measurement mobile jib and swingle, time measuring unit and ultrasonic transducer are connected with control device, one end of one end and swingle for measuring mobile jib is hinged, the opposite two sides of swingle also set up be respectively arranged with rotation decelerating motor and encoder, the output shaft for rotating decelerating motor be connected with swingle and encoder.This programme preferably operates in conjunction with the design realization close to switch and encoder by designing swingle and measuring mobile jib angular adjustment and control, swingle edge measurement mobile jib rotates to measurement of the special angle realization to flue gas line flow velocity；The measurement of different height flue gas flow velocity is realized additionally by the design of quick clip and adjustable support, smart structural design is easy to use carrying, in flue gas flow velocity fields of measurement, popularization with higher and practical value.
Description
Technical field
The utility model relates to gas flow rate field of measuring technique, and in particular to a kind of novel flue gas flow rate measurement dress
It sets.
Background technique
The measurement of flue gas in flue flow velocity generallys use differential pressure pitot tube method, hot sensing method and supercritical ultrasonics technology.Wherein skin support
Tube method is to measure the conventional method of flue gas flow rate, although probe installation, easy to maintain, cheap, its low measurement accuracy,
Measured hole is blocked vulnerable to flue dust, not high to the measurement accuracy of large flue, low flow velocity；It is that hot type is even that hot sensing method, which is applied at most,
Fast flowmeter for pipe, can be according to the number of velocity flow profile figure configuration temperature sensor element and position in pipeline, according to speed-
Area-method accurately measures complicated VELOCITY DISTRIBUTION distortion flow, is particularly suitable for the measurement with large-scale flue gas flow, in addition
Structure is simple, installation and easy to maintain, the pressure loss is small, expense is low for verification, measurement accuracy is high, is that one kind is rising
Flue gas flow meter, but its application range is relatively narrow, there is certain requirement to flue shape；Ultrasonic flowmeter can carry out linear survey
Amount, measurement accuracy are higher, but since the factor that its weight weight, price height, setting angle difficulty are controlled limits it in practical applications
It uses.
The technology tested using Ultrasonic characteristics flue gas flow velocity is more, Patent No.
[201210344506.5] patent of invention proposes a kind of side using the excess of export acoustic phase method measurement ultrasonic wave flight time
Method, whether single-frequency ultrasonic wave or multiple frequency ultrasonic wave technology, all due to its measurement range is small and practical application difficulty greatly without
Convenient for using in actual products；Application publication number is that the patent of invention of [CN105444826A] proposes a kind of flue gas discharge
Amount detecting device and method, but the device and method of patent proposition need to be fixed on the fixation position of flue, use is ineffective
It lives and is limited by installation site；Application publication number is that the patent of invention of [CN106225860A] proposes a kind of flue gas flow meter, should
The flue gas flow meter using flexible, convenient that patent proposes, but its to the positioning of each position of flowermeter without reference to entirely
Portion's measurement is all artificial subjective control, these error accumulations finally influence the measurement result of flue gas flow velocity.
In conclusion existing flue gas flow rate measuring device is frequently necessary to solve following ask in actual use
Topic: (1) ultrasonic probe is fixed on measured gas pipeline, cannot flexibly be reused；(2) ultrasonic measurement flue gas
The angle of body flow velocity needs accurately control.It is right with the extension using ultrasonic technique measurement flue gas flow velocity application environment
Equipment proposes requirement portable, using easy and full-automatic measurement.
To realize the portability of flue ultrasonic measurement gas flow rate product, using easy requirement, it would be highly desirable to propose one
The novel flue gas flow rate measuring device of kind.
Utility model content
The utility model is the portability for realizing flue ultrasonic measurement gas flow rate product, is required using simplicity etc., is mentioned
A kind of novel flue gas flow rate measuring device is gone out, the rotation by swingle relative to measurement mobile jib is realized to flue
The measurement of interior gas line flow velocity.
The utility model, which is that the following technical solution is employed, to be realized: a kind of novel flue device for measuring flow speed of gas, packet
Include control device, time measuring unit, ultrasonic transducer, measurement mobile jib and swingle, the time measuring unit and
Ultrasonic transducer is connected with control device, and one end of the measurement mobile jib and one end of swingle are hinged, and the one of swingle
Side is equipped with rotation decelerating motor, and the other side is equipped with encoder, and the rotation decelerating motor is electrically connected with control device, rotation
The output shaft swingle of decelerating motor is connected, and encoder is connected with the output shaft of rotation decelerating motor and realizes synchronous rotation
Turn, the measurement for rotating angle to swingle is realized by encoder, swingle surrounds mobile jib under the driving of rotation decelerating motor
It is rotated, accurate precision positioning is carried out by encoder, connecing of being connected with control device is additionally provided with below swingle
Nearly switch, the position to realize swingle is determining and state is fed back, and after being measured, swingle is reset to close at switch,
Swingle returns zero point；
The ultrasonic transducer includes the first ultrasonic transducer and the second ultrasonic transducer, the first ultrasonic wave transducer
The relationship of penetrating is fixed on swingle swingle in pairs for device and the second ultrasonic transducer, calculates ultrasonic wave by time measuring unit
Transmitting and the time for completing transmission, the online stream in every channel is calculated using the time difference that ultrasonic wave forward or is inversely propagated along air-flow
Speed and flow；The position detecting module being connected with control device, the position detection mould are additionally provided on the measurement mobile jib
Block uses six axle sensors, to detect to measurement mobile jib position and angle, it is ensured that measure the both ends of mobile jib in same level
Position and measurement mobile jib guarantee that the swingle for being equipped with driving ultrasonic probe ensures it in rotation in a suitable angle
On the flow direction of air-flow.
Further, it is additionally provided with the temperature sensor being connected with control device on the swingle, to measure flue
Interior gas temperature.
Further, it is additionally provided with the sampling pump and humidity sensor being connected with control device on the measurement mobile jib,
Gas in flue is pumped into measurement mobile jib by sampling pump, by the humidity of humidity sensor measurement flue gas, to guarantee measurement numerical value
Precision.
Further, the measuring device further includes adjustment height tripod and quick clip, and quick clip setting is can
The top of adjusting height tripod, measurement mobile jib are mounted on adjustment height tripod by quick clip, pass through adjustment height three
Foot prop carries out height adjustment, realizes the measurement of different height flue gas flow velocity.
Further, the rotation angle of the swingle relative measurement mobile jib is 0 ° -90 °, if horizontal direction is 0 °, rotation
Bar rotates counterclockwise direction around hinge joint and is positive.
Further, the device for measuring flow speed of gas uses titanium alloy material, high temperature resistant, corrosion-resistant, light and be convenient for
It carries.
Further, the spacing of first ultrasonic transducer and the second ultrasonic transducer is L, L 250mm-
350mm, specific distance determine that the length for measuring mobile jib is come really according to the diameter of flue according to the particular technique parameter of energy converter
It is fixed.
Compared with prior art, it the advantages of the utility model and has the active effect that
This programme proposes a kind of novel flue device for measuring flow speed of gas, and design swingle and measurement mobile jib are hinged, in conjunction with
Preferably operation and control are realized in design close to switch and encoder；Swingle rotates to special angle reality along measurement mobile jib
Now to the measurement of flue gas line flow velocity；Different height cigarette is realized additionally by the design of quick clip and adjustment height tripod
The measurement of road gas flow rate, it is whole to use titanium alloy material, high temperature resistant, corrosion-resistant, light quality, intensity height, the measuring device
Overall construction design is ingenious, is easy to use carrying, in flue gas flow velocity fields of measurement, popularization with higher and practical valence
Value.
Detailed description of the invention
Fig. 1 is the first structure diagram of novel flue device for measuring flow speed of gas described in the utility model embodiment；
Fig. 2 is novel flue device for measuring flow speed of gas use state diagram described in the utility model embodiment；
Fig. 3 is novel flue device for measuring flow speed of gas schematic illustration described in the utility model embodiment.
Specific embodiment
In order to which the above objects, features, and advantages of the utility model are more clearly understood, with reference to the accompanying drawing and
Embodiment is described further the utility model.It should be noted that in the absence of conflict, embodiments herein and
Feature in embodiment can be combined with each other.
Embodiment, as shown in Figure 1-3, this programme proposes a kind of novel flue device for measuring flow speed of gas, including control dress
Set 1, time measuring unit, ultrasonic transducer, measurement mobile jib 3 and swingle 8, measurement mobile jib 3 is open at one end hollow
Time measuring unit and ultrasonic transducer described in structure are connected with control device 1, measure end and the swingle of mobile jib 3
8 is hinged, as shown in Figure 1, being additionally provided with rotation decelerating motor 4 and encoder 7 in the opposite two sides of swingle 8, rotation is slowed down
The output shaft of motor 4 is connected with swingle 8 and encoder 7, and encoder 7 is connected realization together with the output shaft of rotation decelerating motor 4
Step rotation, swingle 8 are rotated under the driving of rotation decelerating motor 4 around measurement mobile jib 3, and the swingle 8 is opposite to be surveyed
The rotation angle for measuring mobile jib 3 is 0 ° -90 °, if horizontal direction is 0 °, swingle rotates counterclockwise direction around hinge joint and is positive,
It is configured according to actual measurement situation, accurate precision positioning is carried out by encoder 7, is realized to the rotation angle of swingle 8
Measurement, the lower section of swingle 8 be additionally provided be connected with control device close to switch 12, to realize that the position of swingle determines
And state feedback, after being measured, swingle 8 is reset to close at switch, and swingle returns zero point.
The ultrasonic transducer includes the first ultrasonic transducer 5 and the second ultrasonic transducer 6, the first ultrasonic waves
The relationship of penetrating is fixed on swingle in pairs for energy device and the second ultrasonic transducer, the first ultrasonic transducer 5 and the second ultrasonic wave
The spacing of energy converter 6 is L, L 250mm-350mm, preferably 300mm, is emitted by time measuring unit calculating ultrasonic wave and complete
At the time of transmission, the online flow velocity in every channel and stream are calculated using the time difference that ultrasonic wave forward or is inversely propagated along air-flow
Amount；The position detecting module 9 being connected with control device is additionally provided on the measurement mobile jib 3, the position detecting module 9 uses
Six axle sensors, to be detected to measurement 3 position of mobile jib and angle, it is ensured that measurement mobile jib guarantees in a suitable angle
The swingle for being equipped with driving ultrasonic probe ensures it on the flow direction of air-flow in rotation.
In addition, the temperature sensor 11 being connected with control device is additionally provided on the swingle 8, to detect in flue
The temperature of gas is additionally provided with the sampling pump being connected with control device 1 and humidity sensor 2, sampling pump on measurement mobile jib 3
Gas in flue is pumped into measurement mobile jib, by the humidity of humidity sensor measurement flue gas.
In order to meet different flue height and use condition, as shown in Fig. 2, the measuring device further includes adjustment height
The top of adjustment height tripod 11 is arranged in tripod 11 and quickly clip 10, quick clip 10, and measurement mobile jib 3 passes through fast
Fast clip 10 is mounted on adjustment height tripod 11, also, in the present embodiment, the device for measuring flow speed of gas is integrally used
Titanium alloy material, it is high temperature resistant, corrosion-resistant, it is light and easy to carry.
The measuring device be powered after, first rotation decelerating motor drive swingle carry out zero point reset (i.e. measurement mobile jib and
Swingle is located in same horizontal line), dead-center position finds zero point, swingle playback, by ultrasonic wave by adjusting close to switch
Flow rate measuring device is inserted into flue, and the rotation of swingle is arranged to direction is penetrated perpendicular to flue gas flow rate direction in ultrasonic transducer
Angle, rotation angle are controlled by encoder, after rotating to set angle, power on to ultrasonic transducer, surveyed by control device
It flow velocity and shows out, after being measured, control swingle resets, and triggers close to switch, and control device is received close to switch letter
Number, stop driving rotating electric machine, swingle is kept and measurement mobile jib is in the same horizontal position, by flue gas flow rate measuring device
It is taken out out of flue and completes measurement.
This programme is described further using operating process below with reference to specific:
As shown in Fig. 2, in the specific implementation situation of measurement flue gas flow velocity, wherein upward arrow is expressed as flue gas
Gas flow, 14 be flue, it is assumed that measurement mobile jib 3 has adjusted level, and distance is L, ultrasonic wave between two ultrasonic probes
Speed under this environmental condition is C, and the speed under this environmental condition of gas is V, and gas flow rate is that swingle has moved up θ
Angle, at this time flue gas ultrasonic probe direction component be Vsin θ.
When air-flow is in the same direction in the ultrasound of ultrasonic probe transmitting and flue, ultrasound propagation time T1, such environment item
Ultrasonic velocity is C1 under part, and gas velocity V1, then numerical relation is as follows:
T1=L/ (C1+V1sin θ) (1)
When air-flow is reversed in the ultrasound of ultrasonic probe transmitting and flue, ultrasound propagation time T2, such environmental condition
Lower ultrasonic velocity is C2, and gas velocity V2, then numerical relation is as follows:
T2=L/ (C2-V2sin θ) (2)
In actual measurement process, the time needed for ultrasonic transmission is short, twice ultrasonic wave under the conditions of working condition measuring
Spread speed and the speed of air-flow can be approximately it is identical, i.e.,
C1≈C2 (3)
V1≈V2 (4)
It can be obtained after arranging the formula of (1)-(4) four:
V=(L/2sin θ) (1/T1-1/T2) (5)
By formula (5) as long as can be seen that the time difference T1-T2 for calculating ultrasonic transmission twice and measure from bar
Rotational angle θ the measurement of gas flow rate V in flue can be realized.
In ultrasonic measurement flue when gas flow rate, since circuit devcie loss may generate ultrasound signal transmission
Delay Δ t improves formula (5) as follows to reduce influence of the part to ultrasonic tesint:
V=(L/2sin θ) (1/T1-1/T2+ Δ t) (6)
In (6) formula, L is a constant, as long as measuring from bar rotational angle θ, transmission time T1 of the ultrasound in flue
And T2, determine that the measurement of flue gas flow velocity can be realized in Δ t by system calibrating.Simultaneously in actual use, coding is utilized
The rotational angle θ of swingle when device can accurately obtain each measurement very much, to solve present ultrasonic measurement flue gas
Flow velocity needs the problem of paying close attention to angle, θ.
In the measurement process of ultrasonic measurement flue gas flow velocity, for the accuracy for guaranteeing measurement data, the device weight
Multiple 10 progress gas flow measurements simultaneously seek its mean values, and in this 10 measurement process, if it is determined that is got is super
The sound transmission time data T1 and T2 are abnormal, then abandon the secondary data acquisition.
The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of variation is applied to other fields, but all without departing from the content of the technical scheme of the utility model, according to this reality
With novel technical spirit any simple modification, equivalent variations and remodeling to the above embodiments, it is practical new to still fall within this
The protection scope of type technical solution.
Claims (7)
1. a kind of novel flue device for measuring flow speed of gas, including control device (1), time measuring unit, ultrasonic transducer
And measurement mobile jib (3), the measurement mobile jib (3) are hollow structure open at one end, the time measuring unit and ultrasound
Wave transducer is connected with control device (1), it is characterised in that:
Further include rotation decelerating motor (4), encoder (7) and swingle (8), rotates decelerating motor (4) and encoder (7)
It is connected with control device (1), the end of the swingle (8) and the end of measurement mobile jib (3) are hinged, rotate decelerating motor
(4) setting is in the side of swingle (8), and in the other side opposite with rotation decelerating motor (4), rotation subtracts for encoder (7) setting
The output shaft of speed motor (4) is connected with swingle (8) and encoder (7), passes through rotation decelerating motor (4) control swingle (8)
Relative to measurement mobile jib (3) rotation, while encoder (7) and rotation decelerating motor (4) synchronous rotary, realization encoder (7) are right
The measurement of swingle (8) rotation angle；Be additionally provided with below swingle (8) be connected with control device (1) close to switch
(12)；
The ultrasonic transducer includes the first ultrasonic transducer (5) and the second ultrasonic transducer (6), the first ultrasonic waves
The relationship of penetrating is fixed on swingle (8) in pairs for energy device (5) and the second ultrasonic transducer (6), is also set on the measurement mobile jib (3)
It is equipped with the position detecting module (9) being connected with control device (1), the position detecting module (9) uses six axle sensors, with right
Measurement mobile jib (3) position and angle are detected.
2. novel flue device for measuring flow speed of gas according to claim 1, it is characterised in that: on the swingle (8)
It is additionally provided with the temperature sensor (13) being connected with control device (1), to detect the temperature of gas in flue.
3. novel flue device for measuring flow speed of gas according to claim 1, it is characterised in that: the measurement mobile jib (3)
On be additionally provided with the sampling pump being connected with control device (1) and gas in flue is pumped into survey by humidity sensor (2), sampling pump
It measures in mobile jib, by the humidity of humidity sensor measurement flue gas.
4. novel flue device for measuring flow speed of gas according to claim 1-3, it is characterised in that: the measurement
Device further includes adjustment height tripod (11) and quickly clip (10), quick clip (10) are arranged in adjustment height tripod
(11) top, measurement mobile jib (3) are mounted on adjustment height tripod (11) by quick clip (10).
5. novel flue device for measuring flow speed of gas according to claim 4, it is characterised in that: swingle (8) phase
Rotation angle to measurement mobile jib (3) is 0 ° -90 °, if horizontal direction is 0 °, swingle (8) is rotated counterclockwise around hinge joint
Direction is positive.
6. novel flue device for measuring flow speed of gas according to claim 5, it is characterised in that: the gas flow rate measurement
Device uses titanium alloy material.
7. novel flue device for measuring flow speed of gas according to claim 6, it is characterised in that: first ultrasonic waves
The spacing of energy device (5) and the second ultrasonic transducer (6) is 250mm-350mm.
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| CN201821314742.1U CN208607248U (en) | 2018-08-15 | 2018-08-15 | A kind of novel flue device for measuring flow speed of gas |
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| CN201821314742.1U CN208607248U (en) | 2018-08-15 | 2018-08-15 | A kind of novel flue device for measuring flow speed of gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117825753A (en) * | 2024-03-04 | 2024-04-05 | 中国航空工业集团公司沈阳空气动力研究所 | Monofilament hot wire calibration device and method in extremely low speed range |
-
2018
- 2018-08-15 CN CN201821314742.1U patent/CN208607248U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117825753A (en) * | 2024-03-04 | 2024-04-05 | 中国航空工业集团公司沈阳空气动力研究所 | Monofilament hot wire calibration device and method in extremely low speed range |
| CN117825753B (en) * | 2024-03-04 | 2024-05-28 | 中国航空工业集团公司沈阳空气动力研究所 | Monofilament hot wire calibration device and method in extremely low speed range |
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Address after: 266000 No. 1, Yueyang Road, Chengyang District, Qingdao City, Shandong Patentee after: Qingdao Zhongrui Intelligent Instrument Co.,Ltd. Address before: 266000 No. 1, Yueyang Road, Chengyang District, Qingdao City, Shandong Patentee before: QINGDAO ZHONGRUI INTELLIGENT INSTRUMENT Co.,Ltd. |