CN106197550B - Integrate the measuring device and measuring method of calibrator, densitometer and level-sensing device - Google Patents
Integrate the measuring device and measuring method of calibrator, densitometer and level-sensing device Download PDFInfo
- Publication number
- CN106197550B CN106197550B CN201610681995.1A CN201610681995A CN106197550B CN 106197550 B CN106197550 B CN 106197550B CN 201610681995 A CN201610681995 A CN 201610681995A CN 106197550 B CN106197550 B CN 106197550B
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- detector
- hoistable platform
- intensity
- thickness
- container
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention discloses a kind of measuring device and measuring method for integrating calibrator, densitometer and level-sensing device, which is made of pedestal, hoistable platform, the bucket-shaped container in side, radioactive source, detector, the cylindrical type sleeve with graduated scale, hoistable platform support column；For hoistable platform by motor control, the graduated scale below hoistable platform is used for liquid level in the bucket-shaped container in the side of display, and container top " Fang Dou " is for carrying out calibrator experimental demonstration；The device carries out densitometer experimental demonstration by changing in container solution density；The present invention can meet domestic efficiently active demand of the Nuclear Science and Technology profession to Nuclear Instrument course experiment teaching, can also be generalized to production unit, generate economic benefit.
Description
Technical field
The present invention relates to thickness, density, level measurement technical fields, and in particular to a kind of collection calibrator, densitometer and material
Position meter is in the measuring device and measuring method of one.
Background technology
Calibrator, densitometer and level-sensing device are referred to as " old three meter ", belong to intensity type isotope gauge, and principle is all to utilize
Radioactive source generate gamma-rays pass through measured matter when, ray is absorbed by media such as different-thickness, density, height, measure because
The transmitted intensity decayed by absorption.Thickness is thicker, density is bigger, height is higher, and the degree that gamma-rays is attenuated is bigger, detection
Device by the ray received be converted into tested material thickness, density, the proportional relationship of height pulse signal.In this way, pass through
Pulse signal can be obtained by the information such as thickness, density, the height of surveyed material.Currently, the Nuclear Science and Technology cause in China
Development in continuous ascendant trend, the personnel training scale of colleges and universities' Nuclear Science and Technology profession gradually expands, however for basic
Teaching, the Nuclear Instruments And Industrial Gauges of experiment are very rare, in order to meet the experiment demand of ray and matter interaction and Nuclear Instrument class,
It is small to devise a kind of radioactive source activity, compact structure, the complication experiment demonstration for integrating calibrator, densitometer, level-sensing device fills
It puts.
Invention content
The technical problem to be solved by the present invention is to overcome prior art deficiencies, provide a kind of collection calibrator, densitometer and material
Position meter can meet domestic efficiently Nuclear Science and Technology profession to Nuclear Instrument course reality in the measuring device and measuring method of one
The active demand of teaching is tested, production unit can also be generalized to, generates economic benefit.
The technical proposal for solving the technical problem of the invention is：
Integrate the measuring device of calibrator, densitometer and level-sensing device, including hollow base 1, be arranged on hollow base 1
The hoistable platform support column 7 of hollow part bottom, the cylindrical type with graduated scale being sequentially fixed on hoistable platform support column 7
Sleeve 6, the bucket-shaped container 3 of hoistable platform 2 and side, the bucket-shaped container 3 of the side, the cylindrical type sleeve 6 with graduated scale and lifting are flat
Platform 2 is fixed together, the synchronizing moving on hoistable platform support column 7；Further include 4 He of radioactive source being fixed on hollow base 1
Detector 5, the radioactive source 4 and detector 5 are located at the both ends of the bucket-shaped container 3 in side and radioactive source 4 and detector 5 are located at same water
In plane；The scale of the cylindrical type sleeve 6 with graduated scale marks in this way：When the bottom of container is in radioactive source 4
During with 5 link position of detector, represent that liquid level is " 0 " at this time, the height pointer on pedestal is directed toward graduated scale at this time
0 point；When adding in solution in container, control platform moves down, when liquid level is in 5 link position of radioactive source 4 and detector,
Platform stops movement, and height pointer meaning scale is liquid level at this time.
The hoistable platform support column 7 is by its lifting of motor control.
The collimating aperture aperture of the radioactive source 4 is 1mm.
The measuring method of the measuring device described above for integrating calibrator, densitometer and level-sensing device,
The method for measuring thickness：In calibrator experiment is carried out, make the entire bucket-shaped 3 built-in full water of container in side, and make radiation
Always in bucket-shaped 3 region of container in the side of being in, control hoistable platform 2 is gradually increasing or is gradually reduced the line of source 4 and detector 5
When, corresponding change is occurred for the intensity that measures for causing detector 5 by the change of the bucket-shaped container width in side；When hoistable platform 2 rises,
Intensity increases, it is meant that thickness reduces；When hoistable platform 2 declines, intensity reduces, it is meant that thickness increases；Thus by spy
The variation that device 5 measures intensity is surveyed, observes the variation of thickness, this just plays the role of thickness gauge；It is calculated according to formula (1)
It is to measured object thickness x：
In formula：μmFor measured object mass attentuation coefficient, ρ is density, I0For gamma-rays initial strength, that is, container it is vacant when detect
The gamma intensity that device measures, I pass through the transmitted intensity at measured object thickness x for gamma-rays；
The thickness difference Δ x that the lifting of Fang Douzhuan containers generates is calculated according to formula (2)：
In formula：μmFor tested object amount attenuation coefficient, ρ is density, I1、I2Detector 5 is represented respectively to survey in two different locations
The γ sources radioactive intensity obtained；
The method for measuring density：The height for controlling hoistable platform 2 is constant, is added in interior solution into the bucket-shaped container 3 in side
Solute changes container Central Plains solution density, when solution density changes, across equal thickness measured object it is gamma-ray strong
Degree will also change, and the intensity measured of detector 5 can also occur to change accordingly, thus by the small of container Midst density
The variation that variation measures intensity by detector 5 marks, and measured object density is calculated according to formula (3)：
In formula, μmFor measured object mass attentuation coefficient, x is measured object thickness, I0, I be respectively gamma-rays initial strength with wearing
Cross the transmitted intensity at measured object thickness x；
The method for measuring material position：Hoistable platform 2 is controlled to rise from bottom, before not up to liquid level, letter that detector 5 measures
Number stabilization, when reaching liquid level position, since the substance between radioactive source 4 and detector 5 changes, the counting of detector 5 can be sent out
Raw mutation makes hoistable platform 2 stop rising at this time, and the scale read from the cylindrical type sleeve 6 with graduated scale is liquid level
Highly.
The beneficial effects of the invention are as follows：
The present invention devise it is a kind of integrate the simple and practical of " old three meter " (calibrator, densitometer, level-sensing device) function,
Light structure, lower-cost measuring device and measuring method, the device can meet domestic efficiently Nuclear Science and Technology profession
Active demand to Nuclear Instrument course experiment teaching can also be generalized to production unit, generate economic benefit.
Description of the drawings
Fig. 1 is apparatus of the present invention structure diagram.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description：
As shown in Figure 1, the present invention integrates the measuring device of calibrator, densitometer and level-sensing device, including hollow base
1, the hoistable platform support column 7 of 1 hollow part bottom of hollow base is arranged on, is sequentially fixed on hoistable platform support column 7
The bucket-shaped container 3 of cylindrical type sleeve 6, hoistable platform 2 with graduated scale and side, the bucket-shaped container 3 of the side, the circle with graduated scale
Column type sleeve 6 and hoistable platform 2 are fixed together, the synchronizing moving on hoistable platform support column 7；It further includes and is fixed on hollow bottom
Radioactive source 4 and detector 5 on seat 1, the radioactive source 4 and detector 5 are located at the both ends of the bucket-shaped container 3 in side and 4 He of radioactive source
Detector 5 is located in same level；The scale of the cylindrical type sleeve 6 with graduated scale marks in this way：Work as container
Bottom when being in 5 link position of radioactive source 4 and detector, represent that liquid level is " 0 " at this time, at this time the height on pedestal
Spend at 0 point that pointer is directed toward graduated scale；When adding in solution in container, control platform moves down, when liquid level is in radioactive source 4 and visits
When surveying 5 link position of device, platform stops movement, and height pointer meaning scale is liquid level at this time.
As the preferred embodiment of the present invention, the hoistable platform support column 7 is by its lifting of motor control.
As the preferred embodiment of the present invention, the collimating aperture aperture of the radioactive source 4 is 1mm.
The basic principle of measuring method of the present invention：When collimated beam,gamma-ray passes through absorbing material, the attenuation of intensity
Follow equation below：
I in formula0For gamma-rays initial strength (gamma intensity that detector measures when container is vacant), I is worn for gamma-rays
Cross the transmitted intensity at measured object thickness x, μmFor measured object mass attentuation coefficient, ρ is determinand density.Calibrator principle is：
Known gamma-ray initial intensity value I before passing through object0, the mass attentuation coefficient μ of measured objectmAnd density p, it measures across object
Gamma-ray intensity I after body, you can obtain the thickness x of measured object；Densitometer principle is：It is known pass through object before it is gamma-ray just
Beginning intensity value I0, the mass attentuation coefficient μ of measured objectmAnd thickness x, detector after measuring across object gamma-ray intensity be I,
The density p of measured object can be calculated；The principle for being used as level-sensing device measurement is simple：Surface of material rises to radioactive source 4 and detector 5
During line horizontal position, significant change will occur for gamma intensity I, and detector count rate mutates, this moment graduated scale reading
The height of material as to be measured in a reservoir.
Specific measuring method：In calibrator experiment is carried out, make the entire bucket-shaped 3 built-in full water of container in side, and make radioactive source 4
In the line of detector 5 always bucket-shaped 3 region of container in the side of being in, when control hoistable platform 2 is gradually increasing or is gradually reduced, side
Corresponding change is occurred for the intensity that measures for causing detector 5 by the change of bucket-shaped 3 width of container.When hoistable platform 2 rises, intensity
Increase, it means that thickness reduces；When hoistable platform 2 declines, intensity reduces, it is meant that thickness increases.Thus by detection
Device 5 measures the variation of intensity, it is possible to observe the variation of thickness, this just plays the role of thickness gauge.It can according to formula (1)
Using be calculated measured object thickness as：
The thickness difference Δ x that the lifting of Fang Douzhuan containers generates is calculated according to formula (2)：
In formula, μmFor tested object amount attenuation coefficient, ρ is density, I1、I2Detector is represented respectively to survey in two different locations
The γ sources radioactive intensity obtained.
When carrying out densitometer experiment, the height for controlling hoistable platform is constant, is added in centainly in water into the bucket-shaped container 3 in side
The brine of concentration makes the density of original solution change, when solution density changes, across the measured object of equal thickness
Gamma-ray degree will also change, and the intensity measured of detector 5 can also occur to change accordingly, thus can be by container
The variation that the minor change of Midst density measures intensity by detector 5 marks, this is the experimental principle of densitometer, according to
Formula (3) calculates out measured object density：
In formula, μ as previously describedmFor measured object mass attentuation coefficient, x is measured object thickness, I0, I be respectively that gamma-rays is initial
Intensity is with passing through the transmitted intensity at measured object thickness x.
When carrying out level-sensing device experiment, control hoistable platform rises from bottom, before not up to liquid level, 5 signal of detector
Stablize, when reaching liquid level position, since the substance between radioactive source 4 and detector 5 changes, the counting of detector 5 can occur
Mutation makes hoistable platform 2 stop rising at this time, and the scale read from the cylindrical type sleeve 6 with graduated scale is liquid level height
Degree.This is the principle of the lecture experiment of level-sensing device.
It to be drilled in conclusion the present invention provides a kind of three kinds of calibrator, densitometer, level-sensing device the compound of function of integrating
Show experimental provision, which has, light structure, lower-cost feature.
The basic principles, main features and advantages of the invention have been shown and described above.The above embodiments are only to this hair
The preferred embodiment of bright design concept is described, and not the spirit and scope of the present invention are defined, and is not departing from this
Under the premise of invention design concept, various modifications and improvement that those skilled in the art makes technical scheme of the present invention,
Each fall within protection scope of the present invention.
Claims (2)
1. integrate the measuring device of calibrator, densitometer and level-sensing device, it is characterised in that：Including hollow base (1), setting
Hoistable platform support column (7) in hollow base (1) hollow part bottom, is sequentially fixed on hoistable platform support column (7)
The bucket-shaped container (3) of cylindrical type sleeve (6), hoistable platform (2) with graduated scale and side, the bucket-shaped container of side (3), with quarter
The cylindrical type sleeve (6) and hoistable platform (2) for spending ruler are fixed together, the synchronizing moving on hoistable platform support column (7)；Also wrap
The radioactive source (4) being fixed on hollow base (1) and detector (5) are included, the radioactive source (4) and detector (5) are positioned at Fang Dou
Both ends of shape container (3) and radioactive source (4) and detector (5) are in same level；The cylindrical type with graduated scale
The scale of sleeve (6) marks in this way：When the bottom of container is in radioactive source (4) and detector (5) link position, represent
Liquid level is " 0 " at this time, at this time 0 point of the height pointer direction graduated scale on pedestal；When adding in solution in container, control
Platform processed moves down, and when liquid level is in radioactive source (4) and detector (5) link position, platform stops movement, at this time height
Pointer meaning scale is liquid level；
The hoistable platform support column (7) is by its lifting of motor control；
The collimating aperture aperture of the radioactive source (4) is 1mm.
2. integrating the measuring method of the measuring device of calibrator, densitometer and level-sensing device described in claim 1, feature exists
In：
The method for measuring thickness：In calibrator experiment is carried out, make the built-in full water of the bucket-shaped container (3) in entire side, and make radioactive source
(4) and the line of detector (5) is always in the bucket-shaped container in the side of being in (3) region, and control hoistable platform (2) is gradually increasing or gradually
During decline, the change of the bucket-shaped container width in side will cause the intensity that measures of detector (5) that corresponding change occurs；Work as hoistable platform
(2) when rising, intensity increases, it is meant that thickness reduces；When hoistable platform (2) declines, intensity reduces, it is meant that thickness increases
Add；The variation of intensity is measured thus by detector (5), observes the variation of thickness, this just plays the role of thickness gauge；Root
Measured object thickness x, which is calculated, according to formula (1) is：
In formula：μmFor measured object mass attentuation coefficient, ρ is density, I0For gamma-rays initial strength, that is, container it is vacant when detector survey
The gamma intensity obtained, I pass through the transmitted intensity at measured object thickness x for gamma-rays；
The thickness difference Δ x that the lifting of Fang Douzhuan containers generates is calculated according to formula (2)：
In formula：μmFor tested object amount attenuation coefficient, ρ is density, I1、I2Detector (5) is represented respectively to measure in two different locations
γ sources radioactive intensity；
The method for measuring density：The height for controlling hoistable platform (2) is constant, is added in the solution into the bucket-shaped container (3) in side molten
Matter changes container Central Plains solution density, when solution density changes, across the gamma-ray intensity of the measured object of equal thickness
Also it will change, the intensity measured of detector (5) can also occur to change accordingly, thus by the small of container Midst density
The variation that variation measures intensity by detector (5) marks, and measured object density is calculated according to formula (3)：
In formula, μmFor measured object mass attentuation coefficient, x is measured object thickness, I0, I be respectively gamma-rays initial strength with across quilt
Survey the transmitted intensity at object thickness x；
The method for measuring material position：Hoistable platform (2) is controlled to rise from bottom, before not up to liquid level, letter that detector (5) measures
Number stabilization, when reaching liquid level position, since the substance between radioactive source (4) and detector (5) changes, detector (5) meter
Number can mutate, and hoistable platform (2) is made to stop rising at this time, is read from the cylindrical type sleeve (6) with graduated scale at this time
Scale be liquid level.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610681995.1A CN106197550B (en) | 2016-08-17 | 2016-08-17 | Integrate the measuring device and measuring method of calibrator, densitometer and level-sensing device |
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| CN201610681995.1A CN106197550B (en) | 2016-08-17 | 2016-08-17 | Integrate the measuring device and measuring method of calibrator, densitometer and level-sensing device |
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| CN106197550A CN106197550A (en) | 2016-12-07 |
| CN106197550B true CN106197550B (en) | 2018-07-06 |
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| JP7461958B2 (en) * | 2019-01-30 | 2024-04-04 | ノードソン コーポレーション | Radiation-Based Thickness Gauges |
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| GB916430A (en) * | 1959-04-07 | 1963-01-23 | Acf Ind Inc | Method of preparing a simulated ground contour transparency |
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