CN206930321U - Non-full pipe ultrasonic flowmeter - Google Patents

Non-full pipe ultrasonic flowmeter Download PDF

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Publication number
CN206930321U
CN206930321U CN201720705135.7U CN201720705135U CN206930321U CN 206930321 U CN206930321 U CN 206930321U CN 201720705135 U CN201720705135 U CN 201720705135U CN 206930321 U CN206930321 U CN 206930321U
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CN
China
Prior art keywords
ultrasonic
flow velocity
measurement
conduit
velocity sensors
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Application number
CN201720705135.7U
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Chinese (zh)
Inventor
张白
孔德超
王春阳
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北方民族大学
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Priority to CN201720705135.7U priority Critical patent/CN206930321U/en
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Publication of CN206930321U publication Critical patent/CN206930321U/en

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Abstract

It the utility model is related to a kind of non-full pipe ultrasonic flowmeter, including measurement conduit, two ultrasonic flow velocity sensors, a supersonic level sensor and flow rate calculation unit.Described two ultrasonic flow velocity sensors are obliquely installed in the opposed both sides of the measurement conduit, for measuring the flow velocity of non-full pipe liquid respectively;The supersonic level sensor is vertically installed on measurement conduit, and is located at the same side with one in described two ultrasonic flow velocity sensors, for measuring the liquid level of non-full pipe liquid;The flow rate calculation unit is connected with the supersonic level sensor, two ultrasonic flow velocity sensors respectively, and flow rate calculation unit is according to supersonic level sensor and two ultrasonic flow velocity sensors measurement the data obtaineds, the flow of calculating non-full pipe liquid.The utility model non-full pipe ultrasonic flowmeter can be used for the measurement of non-full pipe flow, and simple for structure, and easy for installation, cost is relatively low, and measuring speed is fast, precision is high.

Description

Non-full pipe ultrasonic flowmeter
Technical field
A kind of pipeline flow measuring instrument is the utility model is related to, more particularly to a kind of non-full pipe ultrasonic gage.
Background technology
Developing Water-saving Agriculture needs rational allocation irrigating water quality, implements scientific consumption of water, correct to perform water plan and meter Receive water rate.Current to strengthen the development trend that water resource economic management is China's modernization water-saving agriculture, just there is an urgent need to structure for this Simply, the high flow measurement device of measurement accuracy.
Traditional ultrasonic flowmeter is loaded with the original of fluid flow information when being propagated using ultrasonic wave in the liquid of flowing Reason, the flow rate information of fluid being measured is can be obtained by by the ultrasonic signal detected through fluid, finally further according to corresponding original Reason is converted into flow.Ultrasonic flowmeter is small without any motion, choked flow part, no abrasion, the pressure loss in tested pipeline;Spirit Sensitivity is high, can detect the minor variations of flow velocity;With extremely wide range ratio, and structure of ultrasonic flowmeter is simple, is easy to tie up Shield, is especially suitable for civilian and commercial measurement.But the quasi-instrument is mainly used in full packages flow measurement.Measured to solve partly-filled pipe-flow The demand of amount, it is basic at present to use multichannel ultrasonic measurement, but this is but to system cost and multichannel ultrasonic flow meter Installation propose higher requirement.
Utility model content
The utility model not only overcomes the technical barrier of non full package flow measurement, and also overcomes multichannel ultrasonic wave Measurement apparatus cost is high, the deficiency of installation difficulty, there is provided a kind of non-full pipe ultrasonic flowmeter based on ultrasonic wave time difference method.
In order to solve the above-mentioned technical problem, the utility model uses following technical proposals:A kind of non-full pipe ultrasonic flow Meter, including measurement conduit, two ultrasonic flow velocity sensors, supersonic level sensor and flow rate calculation unit, it is described two Ultrasonic flow velocity sensors are obliquely installed in the opposed both sides of the measurement conduit respectively, for measuring in the measurement conduit The flow velocity of liquid;The supersonic level sensor is vertically installed on measurement conduit, and is passed with described two ultrasonic flow-velocities One in sensor is located at the same side, for measuring the liquid level of the measurement liquid in conduit;The flow rate calculation unit difference It is connected with the supersonic level sensor, two ultrasonic flow velocity sensors, flow rate calculation unit becomes according to supersonic liquid level Device and two ultrasonic flow velocity sensors measurement the data obtaineds are sent, calculates the fluid flow in the measurement conduit.
It is equal to 1 in view of cot45 °, advantageously reduces the number of coefficient in flow rate calculation formula, improves calculating speed, be This, the utility model provides following technical scheme:The ultrasonic flow velocity sensors and the angle measured between conduit are 45°。
The ultrasonic wave phase launched in order to avoid the ultrasonic wave of supersonic level sensor transmitting with ultrasonic flow velocity sensors Mutually interference, therefore, the utility model provides following technical scheme:Supersonic flow of the supersonic level sensor away from homonymy The distance of fast sensor is more than between two ultrasonic flow velocity sensors at twice of distance of water (flow) direction.
The non-full pipe ultrasonic flowmeter also includes housing, and the flow rate calculation unit is arranged in housing, on housing Provided with display screen and button.
In order to facilitate the calculating of fluid cross-section product in measurement conduit, therefore, the utility model provides following technical scheme: The measurement conduit is the conduit of square-section.
Compared with existing full packages ultrasonic flowmeter, the utility model can be applied to the partly-filled pipe-flow of cross sectional shape rule The measurement of amount;Compared with existing non-full pipe multichannel ultrasonic flow meter, the utility model structure it is more succinct, it is necessary to ultrasound Ripple flow sensor is less, easy for installation, and cost is lower, and measuring speed is fast.
Brief description of the drawings
, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation of the utility model axial cross section
Fig. 2 is that non-full pipe flow of the present utility model calculates auxiliary schematic diagram
Description of symbols in figure:
Measure conduit 1;Flow rate calculation unit 2;Ultrasonic flow velocity sensors 3;Supersonic level sensor 4.
Embodiment
Below in conjunction with accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear Chu, it is fully described by.It should be appreciated that specific embodiment described herein is used only for explaining the utility model, it is not used to Limit the utility model.Based on embodiment of the present utility model, those skilled in the art are on the premise of no creative work The every other embodiment obtained, belongs to the scope of protection of the utility model.
Fig. 1 and Fig. 2 are referred to, is only the structure for schematically illustrating each part in figure, but do not indicate that as specific product Structure.As depicted in figs. 1 and 2, a kind of non-full pipe ultrasonic flowmeter, including a measurement conduit are provided in the present embodiment 1st, two ultrasonic flow velocity sensors, 3, supersonic level sensors 4 and a flow rate calculation unit 2, can be real as one kind The citing of mode is applied, measurement conduit 1 is the conduit of square-section, and the conduit of square-section conveniently calculates the section of non-full pipe flow Product.Flow measurement cell can use the microprocessor for being integrated with addition subtraction multiplication and division computing function to realize, can also use electrical equipment member The addition subtraction multiplication and division computing circuit module of part composition is realized.
Two ultrasonic flow velocity sensors 3 are obliquely arranged at the opposed both sides of measurement conduit 1 respectively, are led with measurement Angle between pipe 1 is 45 °, and two ultrasonic flow velocity sensors 3 mutually carry out the transmitting and reception of ultrasonic wave, for measuring State the flow velocity of measurement liquid in conduit.Supersonic level sensor 4 be vertically installed in measurement conduit on, and with described two ultrasounds One in ripple flow sensor is located at the same side, for the liquid level for measuring the measurement liquid in conduit.In order to avoid Ultrasonic wave interference occurs between supersonic level sensor 4 and ultrasonic flow velocity sensors 3, supersonic level sensor 4 is away from same The distance X2 of the ultrasonic flow velocity sensors 3 of side is more than distance X1 of two times of two ultrasonic flow velocity sensors in water (flow) direction.
The flow rate calculation unit is connected with the supersonic level sensor, two ultrasonic flow velocity sensors respectively. Flow rate calculation unit calculates the survey according to supersonic level sensor and two ultrasonic flow velocity sensors measurement the data obtaineds Measure the fluid flow in conduit.The non-full pipe ultrasonic flowmeter also includes housing, and the flow rate calculation unit is set In in housing, housing is provided with display screen and button.
During use:
1) when non-full pipe flow is by measuring conduit 1, supersonic level sensor 4 launches ultrasonic wave to the water surface, passes through The water-reflected time of ultrasonic wave calculates the distance h away from the water surface at the top of measurement conduit, it is possible thereby to cutting according to measurement conduit 1 Face shape learns the sectional area s of non-full pipe flow.
2) ultrasonic flow velocity sensors 3 for measuring the top of conduit 1 launch ultrasonic wave, after ultrasonic signal is by fluid media (medium) The ultrasonic flow velocity sensors 3 for being measured the bottom of conduit 1 are received, and the ultrasonic flow velocity sensors 3 of top and bottom respectively will Flow rate calculation unit 2 is passed at the time of transmitting and reception ultrasonic wave, when flow rate calculation unit is propagated by the way that adverse current is calculated Between t1.
3) ultrasonic flow velocity sensors 3 for measuring the bottom of conduit 1 launch ultrasonic wave, after ultrasonic signal is by fluid media (medium) The ultrasonic flow velocity sensors 3 for being measured the top of conduit 1 are received, and the ultrasonic flow velocity sensors 3 at bottom and top respectively will Flow rate calculation unit 2 is passed at the time of transmitting and reception ultrasonic wave, when flow rate calculation unit is by being calculated downstream propagation Between t2.
4) time difference Δ t is calculated according to t1 and t2 in flow rate calculation unit 2.
5) rate of flow of fluid is set as v;The velocity of sound in known stationary fluid is c, and measurement catheter section is highly H, measures conduit Distance h of the top away from the water surface, ultrasound track and conduit axis are 45 °, non-full pipe flow sectional area s when fluid is static, then adverse current Propagation time t1With downstream propagation times t2Respectively:
τ is ultrasonic wave in inner air tube, in tube wall and electric impulse signal transmits caused hysteresis in circuit in formula The summation of time.
Time difference is that Δ t is equal to:
Because Δ t is calculated by flow rate calculation unit, then flow velocity v is equal to:
Therefore flow q is equal to:
It is described above, preferred embodiment only of the present utility model, but the scope of protection of the utility model not office It is limited to this, any technical staff for being familiar with the technical program enters in the technical scope that the utility model discloses to above example The simple modification of row, equal conversion, are encompassed by the scope of protection of the utility model.

Claims (5)

  1. A kind of 1. non-full pipe ultrasonic flowmeter, it is characterised in that:Including measurement conduit, two ultrasonic flow velocity sensors, surpass Sound wave liquid level transmitter and flow rate calculation unit, described two ultrasonic flow velocity sensors are obliquely installed respectively leads in the measurement Opposed both sides are managed, for measuring the flow velocity of the measurement liquid in conduit;The supersonic level sensor is vertically arranged In on measurement conduit, and it is located at the same side with one in described two ultrasonic flow velocity sensors, for measuring the measurement The liquid level of liquid in conduit;The flow rate calculation unit passes with the supersonic level sensor, two ultrasonic flow-velocities respectively Sensor connects, and flow rate calculation unit measures the data obtaineds according to supersonic level sensor and two ultrasonic flow velocity sensors, Calculate the fluid flow in the measurement conduit.
  2. 2. non-full pipe ultrasonic flowmeter according to claim 1, it is characterised in that:The ultrasonic flow velocity sensors with The angle measured between conduit is 45 °.
  3. 3. non-full pipe ultrasonic flowmeter according to claim 1, it is characterised in that:The supersonic level sensor away from The distance of the ultrasonic flow velocity sensors of homonymy be more than between two ultrasonic flow velocity sensors water (flow) direction distance two Times.
  4. 4. non-full pipe ultrasonic flowmeter according to claim 1, it is characterised in that:The non-full pipe ultrasonic flowmeter Also include housing, the flow rate calculation unit is arranged in housing, and housing is provided with display screen and button.
  5. 5. non-full pipe ultrasonic flowmeter according to claim 1, it is characterised in that:The measurement conduit is square-section Conduit.
CN201720705135.7U 2017-06-16 2017-06-16 Non-full pipe ultrasonic flowmeter CN206930321U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720705135.7U CN206930321U (en) 2017-06-16 2017-06-16 Non-full pipe ultrasonic flowmeter

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Application Number Priority Date Filing Date Title
CN201720705135.7U CN206930321U (en) 2017-06-16 2017-06-16 Non-full pipe ultrasonic flowmeter

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Publication Number Publication Date
CN206930321U true CN206930321U (en) 2018-01-26

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108318092A (en) * 2018-01-31 2018-07-24 泰华智慧产业集团股份有限公司 It can be used for the flow measurement device of non-full pipe drainage pipeline
CN109141554A (en) * 2018-05-25 2019-01-04 南京维朴水务工程有限公司 A kind of area velocity flowmeter for surveying partly-filled pipe-flow using supersonic Doppler method
CN109297551A (en) * 2018-11-26 2019-02-01 浙江清环智慧科技有限公司 A kind of measurement method and system of pipe network flow
CN110439488A (en) * 2019-08-30 2019-11-12 中国石油集团川庆钻探工程有限公司 Solid-liquid flow measuring system and measurement method in a kind of drilling well manifold
CN110512690A (en) * 2019-09-05 2019-11-29 哈尔滨工业大学 Water supply network independent measure subregion current divider

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108318092A (en) * 2018-01-31 2018-07-24 泰华智慧产业集团股份有限公司 It can be used for the flow measurement device of non-full pipe drainage pipeline
CN109141554A (en) * 2018-05-25 2019-01-04 南京维朴水务工程有限公司 A kind of area velocity flowmeter for surveying partly-filled pipe-flow using supersonic Doppler method
CN109297551A (en) * 2018-11-26 2019-02-01 浙江清环智慧科技有限公司 A kind of measurement method and system of pipe network flow
CN110439488A (en) * 2019-08-30 2019-11-12 中国石油集团川庆钻探工程有限公司 Solid-liquid flow measuring system and measurement method in a kind of drilling well manifold
CN110512690A (en) * 2019-09-05 2019-11-29 哈尔滨工业大学 Water supply network independent measure subregion current divider

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