CN1219237A - Device to detect the speed profile of concrete flowing into a pipepline - Google Patents
Device to detect the speed profile of concrete flowing into a pipepline Download PDFInfo
- Publication number
- CN1219237A CN1219237A CN97194823A CN97194823A CN1219237A CN 1219237 A CN1219237 A CN 1219237A CN 97194823 A CN97194823 A CN 97194823A CN 97194823 A CN97194823 A CN 97194823A CN 1219237 A CN1219237 A CN 1219237A
- Authority
- CN
- China
- Prior art keywords
- concrete
- pipeline
- probe mechanism
- device described
- supersonic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000523 sample Substances 0.000 claims abstract description 26
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000004458 analytical method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 3
- 208000002193 Pain Diseases 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000036407 pain Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/036—Analysing fluids by measuring frequency or resonance of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/221—Arrangements for directing or focusing the acoustical waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
- G01N29/348—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with frequency characteristics, e.g. single frequency signals, chirp signals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/011—Velocity or travel time
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/024—Mixtures
- G01N2291/02416—Solids in liquids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/10—Number of transducers
- G01N2291/102—Number of transducers one emitter, one receiver
Landscapes
- Physics & Mathematics (AREA)
- Immunology (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
A device to detect the speed profile of concrete flowing through a pipeline with radial symmetry comprises acoustical probe means, apt to send through said pipeline and the concrete a supersonic ray inclined in respect of the pipeline axis and to receive a disturbed supersonic ray in response, as well as an electronic circuit apt to analyse the signals sent by said probe means and obtain therefrom a diagram showing the speed profile of the concrete. According to the invention, said probe means make use of a supersonic ray of frequency between 20 and 500 KHz, and said electronic circuit processes the signals sent by the probe means, indicating the speed, with an updating frequency from 10 to 70 times per second and deprives said signals from their components derived from the propagation rate in the concrete, to obtain a measurement of the speed along the acoustical axis, which is not relative and has its own sign.
Description
The present invention relates to detect the device of the concrete velocity distribution in the pipeline of the radial symmetry of delivering concrete.
The known velocity distribution that has certain methods and device to be used for detecting the heterogeneous fluid potpourri that in conduit, flows.These method and apparatus are generally used for medical treatment and biological field, and detected object is tissue fluid and/or the physiological liquid that concentration is limited, viscosity is not high, and as blood, their unevenness compares the low several magnitude of size of the conduit that is flow through, and is very little.
Yet,, do not take pains the detection problem of the velocity distribution that solves them so far as yet for such as the such high concentration of concrete with the fluid of the size of the pipeline that glutinousness is very high, unevenness and the normally diameter that flow through are quite big with same order.
The present invention is directed to this problem and proposed the device of the concrete velocity distribution of a kind of detection in the pipeline of delivering concrete, thereby solved this problem.This device comprise one send one with the passing through described pipeline and the concrete ultrasonic beam that flows therein, receive the sonic probe mechanism of the ultrasonic beam that is subjected to disturbance in response of conduit axis oblique, and the signal of a described probe mechanism transmission of analysis draws the circuit of concrete velocity profile.The feature of this device is the supersonic beam of described probe mechanism frequency of utilization between 20 to 50KHz, and the signal of the indication speed that described circuit is sent here probe mechanism with the renewal frequency of per second 10 to 70 times is handled, remove the component that wherein causes owing to the spreading rate in concrete, obtain along the velocity measurement of sound wave axle, this result is not relative, has its symbol.
Described pick-up unit can make described velocity measurement be shown as velocity distribution.And it can draw flow rate by the rate integrating on cross-sectional area, and it also can draw viscosity by the first order derivative of speed in the space, and draws granularity and concentration by the statistical study to one group of velocity distribution.
For the purpose of economy, also in order to make structure and operation more simple, in pick-up unit of the present invention, the form that probe mechanism employing transmission probe and receiving transducer lump together normally very easily.Best, this probe mechanism is mounted to when being added on the described pipeline and makes supersonic beam become 15 ° to 75 ° angle with conduit axis.
The present invention will be described in detail below with reference to accompanying drawings.These accompanying drawings show the embodiment of pick-up unit of the present invention, wherein:
Fig. 1 shows the block scheme of the pick-up unit that constitutes by the present invention;
Fig. 2 and 2A are added to situation about transmitting on the concrete pipeline with the sonic probe that the cut-open view of two quadratures illustrates as parts of pick-up unit shown in Figure 1;
The overshot line that Fig. 3 shows described probe emission in described pipeline propagates into the concrete situation with described ray intersection;
Fig. 4 shows a for example example of the concrete velocity distribution of shown inflow transport pipeline in pick-up unit of the present invention.
As shown in these figures, the pick-up unit that constitutes by the present invention utilizes the supersonic rays γ (Fig. 1 and 2) of frequency between 20 to 500KHz, intersects with the concrete that flows through pipeline C.Described pick-up unit detects the disturbance that is occurred on the response ray γ ' (Fig. 1 and 2 A), and this disturbance is because the propagation that non-homogeneous concrete scrambling influences described ray γ ' causes.
Pick-up unit makes used supersonic rays become 15 ° to 75 ° angle (Fig. 2) with the axis of pipeline C on being added to pipeline C the time.
As shown in Figure 1, pick-up unit comprises: pipeline C who flows through to concrete suitably tilts to send the transmission probe 1 of supersonic rays γ, is disturbed thereby make supersonic rays and concrete wherein intersect to propagate; The receiving transducer 2 of the supersonic beam γ that is subjected to disturbance that collection is penetrated from pipeline C; And the receiving circuit of the signal that produced by receiving transducer 2 of reception.Receiving transducer 2 be configured in send probe 1 identical plane on, form an angle α (seeing Fig. 2 A) arbitrarily each other, but also can with send probe 1 and lump together (as shown in Figure 2), so not only economy but also easy was more desirable.
In receiving circuit, the logarithmic amplifier 3 that the signal of receiving transducer 2 outputs (just forms the distance of the pickup ponints of signal) in time by gaining and changes amplifies.
Deliver to passive decomposition circuit 4 through amplifying signal.This is a simple circuit (preferably dog-cheap RC unit), is used for the real part and the imaginary part of restoring signal, and they are delivered to the shunt circuit 5 and 6 that is subjected to sample circuit 7 controls respectively.In shunt circuit 5 and 6 (preferably two simple and economic digital demultiplexers), each real part and the imaginary part of signal are carried out shunt.When shunt 5 and 6 shunt base be chosen to each constantly with pipeline in a position in the level Four signal space of advancing corresponding, thereby can obtain required distribution by analyzing, promptly pipeline C inner concrete flows through along the quality at the appropriate section place of supersonic rays on each distance of sampling interval.Fig. 2 illustration these a series of part S.
Deliver to correlator 9 behind the signal multiplication of the signal of shunt circuit 5 outputs and shunt circuit 6 outputs, and the signal of shunt circuit 6 outputs is delivered to correlator 8 behind the signal multiplication of exporting with shunt circuit 5 after the reindexing.Correlator 8 and 9 is by sample circuit 7 controls.In described circuit, the real part and the imaginary part of the signal in each cross section are subjected to relevant treatment, thereby can recover along the speed of the particle at supersonic rays each several part place.By duct wall is designated by definition is the part of no speed, just can make velocity of propagation and the refraction angle (see figure 3) of supersonic rays in duct wall one concrete path measured with in concrete (the specific concrete of flow ipe C) irrelevant, thereby the absolute measurement result that can obtain in the speed of each several part (rather than picture is used for the relative measurement result that medical treatment and known pick-up units of biological field obtain at those), these results have symbol separately.Consider that concrete is very inhomogeneous, and carry with reciprocating pump usually, thereby inhomogeneous these characteristics of transfer movement should be carried out at least 10 to 70 times processing with the renewal frequency per second of sample circuit 7.
In interlock circuit, therefore also carry out average operation, make signal after removing denoising, deliver to the processor 10 in the receiving circuit again.
Then, described processor combines the real part and the imaginary part of signal again, carry out filtering operation again, from each velocity amplitude (having symbol separately respectively), derive required distribution, on display, shown, shown in this example of Fig. 4 (wherein ordinate v represents speed, abscissa d represent to allow the diameter of the pipeline C that concrete flows through).
After having recovered the velocity amplitude at each several part place, can also determine concrete flow rate (at the rate integrating of cross-sectional area), viscosity (the speed derivative in the space) and the granularity (drawing) of flow ipe C by general electronics calculating operation with same processor 10 by one group of speed is carried out statistical study.
Can determine finally that all these physical quantitys just can guarantee the quality of concrete authentication to carrying by the pipeline C that pick-up unit of the present invention is housed.
Claims (8)
1. the device of the concrete velocity distribution of a detection in the pipeline of the radial symmetry of delivering concrete, described device comprises that is used for sending the concrete supersonic rays that passes through pipeline and flow therein with the conduit axis oblique, receive sonic probe mechanism and a signal that is used for analyzing described probe mechanism transmission of the supersonic rays that is subjected to disturbance in response, therefrom draw the electronic circuit of the figure of the concrete velocity distribution of expression, the feature of described device is: described probe mechanism frequency of utilization is at 20 to 500KHz supersonic rays, and the signal of the indication speed that described electronic circuit is sent here probe mechanism with the renewal frequency of per second 10 to 70 times is handled, remove the component that wherein causes owing to the spreading rate in concrete, obtain along the velocity measurement of sound wave axle, this result is not relative, has its symbol.
2. as at the device described in the claim 1, wherein said velocity measurement shows with the form of velocity distribution.
3. as at the device described in claim 1 and 2, wherein flow rate is measured by the rate integrating on cross-sectional area.
4. as at the device described in the claim 1 to 3, wherein the viscosity measurement result draws by the speed first order derivative in the space.
5. as at the device described in the claim 1 to 4, wherein the measurement result of granularity and concentration draws by one group of velocity distribution is carried out statistical study.
6. as at the device described in the claim 1 to 5, wherein probe mechanism adopts and sends the structure that probe and receiving transducer lump together.
7. as at the device described in the claim 1 to 6, wherein said probe mechanism is added on the described pipeline, makes employed supersonic rays become 15 ° to 75 ° angle with conduit axis.
8. as at the device described in the claim 1 to 7, wherein draw quality of concrete authentication by described pipeline transportation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT96MI000812A IT1282125B1 (en) | 1996-04-24 | 1996-04-24 | DEVICE FOR DETECTION OF THE SPEED PROFILE OF CONCRETE MOVING IN A DUCT. |
| ITMI96A000812 | 1996-04-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1219237A true CN1219237A (en) | 1999-06-09 |
Family
ID=11374110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97194823A Pending CN1219237A (en) | 1996-04-24 | 1997-04-23 | Device to detect the speed profile of concrete flowing into a pipepline |
Country Status (12)
| Country | Link |
|---|---|
| EP (1) | EP0900373A1 (en) |
| JP (1) | JP2001515586A (en) |
| KR (1) | KR20000010637A (en) |
| CN (1) | CN1219237A (en) |
| AU (1) | AU712742B2 (en) |
| BR (1) | BR9708741A (en) |
| CA (1) | CA2252724A1 (en) |
| IT (1) | IT1282125B1 (en) |
| NO (1) | NO984954L (en) |
| NZ (1) | NZ332504A (en) |
| TR (1) | TR199802142T2 (en) |
| WO (1) | WO1997040372A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323323B (en) * | 2013-05-21 | 2015-05-20 | 河海大学 | Establishing method of concrete breaking strength prediction model considering loading rate influence |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2647184C3 (en) * | 1976-10-19 | 1982-03-25 | Nikolaj Ivanovič Moskva Brašnikov | Method for determining physical parameters of liquid media by means of ultrasound |
| CH669463A5 (en) * | 1985-03-21 | 1989-03-15 | Walter Guggenbuehl Prof Dr | Gas flow and temp. measuring device - uses ultrasonic pulses transmitted simultaneously in opposite directions at angle to gas flow |
| FR2634557A1 (en) * | 1988-07-22 | 1990-01-26 | Pluss Stauffer Ag | DEVICE AND METHOD FOR SIMULTANEOUSLY MEASURING IN A CONDUIT, DENSITY, CONCENTRATION, FLOW SPEED, FLOW AND TEMPERATURE OF A LIQUID OR PASTY FLUID BY ULTRASONIC TRANSMISSION |
-
1996
- 1996-04-24 IT IT96MI000812A patent/IT1282125B1/en active IP Right Grant
-
1997
- 1997-04-23 KR KR1019980708559A patent/KR20000010637A/en not_active Application Discontinuation
- 1997-04-23 CA CA002252724A patent/CA2252724A1/en not_active Abandoned
- 1997-04-23 CN CN97194823A patent/CN1219237A/en active Pending
- 1997-04-23 BR BR9708741-6A patent/BR9708741A/en not_active Application Discontinuation
- 1997-04-23 TR TR1998/02142T patent/TR199802142T2/en unknown
- 1997-04-23 WO PCT/EP1997/002071 patent/WO1997040372A1/en not_active Application Discontinuation
- 1997-04-23 EP EP97921721A patent/EP0900373A1/en not_active Withdrawn
- 1997-04-23 AU AU27690/97A patent/AU712742B2/en not_active Ceased
- 1997-04-23 JP JP53775297A patent/JP2001515586A/en active Pending
- 1997-04-23 NZ NZ332504A patent/NZ332504A/en unknown
-
1998
- 1998-10-23 NO NO984954A patent/NO984954L/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| BR9708741A (en) | 2000-01-04 |
| NO984954L (en) | 1998-12-11 |
| TR199802142T2 (en) | 1999-02-22 |
| EP0900373A1 (en) | 1999-03-10 |
| NO984954D0 (en) | 1998-10-23 |
| NZ332504A (en) | 2000-04-28 |
| KR20000010637A (en) | 2000-02-25 |
| AU2769097A (en) | 1997-11-12 |
| ITMI960812A1 (en) | 1997-10-24 |
| ITMI960812A0 (en) | 1996-04-24 |
| AU712742B2 (en) | 1999-11-18 |
| WO1997040372A1 (en) | 1997-10-30 |
| IT1282125B1 (en) | 1998-03-12 |
| JP2001515586A (en) | 2001-09-18 |
| CA2252724A1 (en) | 1997-10-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |