CN103837106B - Tubing measurement device - Google Patents
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- CN103837106B CN103837106B CN201410081700.8A CN201410081700A CN103837106B CN 103837106 B CN103837106 B CN 103837106B CN 201410081700 A CN201410081700 A CN 201410081700A CN 103837106 B CN103837106 B CN 103837106B
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Abstract
The invention discloses a kind of tubing measurement device, including frame and the measurement apparatus being arranged in frame, wherein, measurement apparatus also includes one for measuring the laser scanning device of the external diameter information of tubing, laser scanning device includes laser scanning discharger and laser scanning receives device, and laser scanning discharger and X-ray tube are arranged at the same one end in the second measurement chamber；Laser scanning receives device and is set up in parallel for receiving the laser beam not blocked by tubing to be measured and forming the external diameter information of tubing with radioscopic image sensor.The present invention may be used for measuring tube outer diameter by additional laser scanning means, can directly be found and measure that tube wall thickness is the thinnest and the position in thickness and size by additional rotating mechanism, can solve stationary installation needs that two set x-ray imaging devices are produced eccentric calculates errors and the high problem of cost simultaneously.
Description
Technical field
The present invention relates to the tubing measurement device of the parameter measurements such as a kind of measurement device, particularly a kind of thickness to the tubing on tube extrusion line.
Background technology
Including automobile, a lot of industries such as chemical industry will use rubber or plastic pipe.They such as can be produced by such method: the raw material of solid-state enters barrel under the propelling movement of screw rod, becomes semi liquid state under the thermal environment of barrel.Under the squeezing action of screw rod, the raw material of semi liquid state, from head outlet extrusion, defines tubing.The wall thickness of tubing controls by regulating head outlet gap size.
After completing extrusion, tubing cross section should have desirable shape, and namely the center of circle of cylindrical and inner circle should overlap.It practice, how many centers of circle that production tube always has tolerance, cylindrical and inner circle has certain deviation, namely certainly exist certain degree of eccentricity.
Tubing is produced critically important mass parameter is exactly thickness of pipe wall and the degree of eccentricity, needs the measurement of these parameters and monitoring in tubing production process.For measuring wall thickness, the method for useful X-ray measurement.It is referred to United States Patent (USP) 6377654.This United States Patent (USP) utilizes x-ray bombardment tubing cross section, after penetron tube material, some can be absorbed by tubing, and unabsorbed roentgenization is on image device, the cross-sectional image of tubing can be obtained, the wall thickness size of tubing can be obtained by analyzing this image.The premise of this measuring method is X-ray tube and tubing distance remains unchanged, but during for online production under, this distance can often change, and therefore can produce the problem that degree of accuracy is not high.Therefore the method yet suffers from defect, it is necessary to improve.
Do not affect certainty of measurement after changing in order to ensure tubing upper-lower position, also to obtain the degree of eccentricity of tubing simultaneously, it is possible to the such set of device of each installation in orthogonal both direction.While measuring tubing position, the wall thickness information of four points on tubing can be utilized again, derived the bias of tubing by mathematical operation.But this meaning to adopt two set x-ray imaging devices to be arranged in orthogonal both direction, this scheme that namely the X-RAY2000 series of products such as SIKORA company adopt.But the mathematical derivation degree of eccentricity out and the real degree of eccentricity remain discrepant.In extreme circumstances, this difference can exceed the requirement to tubing specification, and the method exists relatively costly problem.Therefore, this method of prior art there is also defect, it is necessary to improves.
Summary of the invention
In view of the problems referred to above that prior art exists, it is an object of the invention to provide that a kind of measuring accuracy is high and lower-cost tubing measurement device.
nullTo achieve these goals，A kind of tubing measurement device provided by the invention，Including frame and the measurement apparatus being arranged in described frame，Described measurement apparatus includes the first measurement chamber、Second measures chamber and for obtaining the x-ray imaging device of the cross-sectional image information of tubing，Described first measurement chamber is a pipeline supplying tubing traverse to be measured，It measures chamber and connects and intersecting vertical setting with described second，Described x-ray imaging device includes X-ray tube and radioscopic image sensor，Described X-ray tube is arranged at described second and measures the one end in chamber for sending along the described second X ray measuring chamber the cross section traverse being perpendicular to described pipe length direction through tubing，Described radioscopic image sensor is arranged at described second and measures in the chamber other end for receiving through the X ray of tubing to be measured and forming the cross-sectional image information of tubing，Wherein，Described measurement apparatus also includes one for measuring the laser scanning device of the external diameter information of tubing，Described laser scanning device includes laser scanning discharger and laser scanning receives device，Described laser scanning discharger and described X-ray tube are arranged at described second same one end measuring chamber，It is measured chamber along described second for sending and is perpendicular to, through another of tubing, the laser beam that the cross section in described pipe length direction irradiates，The light path of described laser beam is parallel with the light path of described X ray；Described laser scanning receives device and is arranged at outside described second measurement chamber for receiving the laser beam not blocked by tubing to be measured and forming the external diameter information of tubing.
As preferably, the cross section of described X ray traverse is close with the cross section of described laser light irradiation to be overlapped.In the present invention, represent closely close to overlapping, but practical operation can not make again light path be completely superposed, thus be close to it is believed that the cross-sectional image information of the tubing measured by two cross-section and external diameter information unanimously.
As preferably, described laser scanning device also includes a reflecting mirror group, described reflecting mirror group includes at least one first reflecting mirror and one second reflecting mirror, described first reflecting mirror and the second reflecting mirror the second measurement intracavity between X-ray tube and described radioscopic image sensor, and the laser beam that described laser scanning discharger sends reflects so that described laser beam is parallel with described X ray with described second reflecting mirror through described first reflecting mirror successively, described laser scanning receives device and is arranged at described second reflecting mirror side for receiving the laser beam through described second reflecting mirror reflection.
As preferably, described first measures chamber is fixedly installed in described frame, described second measurement chamber and described first is measured and is provided perpendicular to its each axial through hole on the upper side wall of chamber, and described first measures the through hole on the described second measurement chamber of chamber traverse and make both internal cavities connections by the through hole on described first measurement chamber.
As preferably, described tubing measurement device also includes a rotating mechanism, described rotating mechanism includes the motor being fixed in described frame, the driving gear being arranged on described motor output shaft and is set in outside described first measurement chamber and measures the driven gear that chamber is connected with described second, and described driving gear and described driven gear are nibbled and driven described driven gear under the driving being incorporated in described motor so that described second measures chamber around described first measurement chamber rotation；
Described x-ray imaging device and described laser scanning device may be contained within the described second internal cavities measuring chamber or outer surface and rotate integrally with described second measurement chamber.
As preferably, described first measures chamber and is fixed between the described second driven gear measuring on chamber and is provided with bearing.
As preferably, described second measurement chamber is ± 90 ° around the described first angle measuring chamber rotation.
Compared with prior art, the method have the advantages that first, the laser scanning device utilizing single channel x-ray imaging device additional solves the problem that tubing change in location can affect certainty of measurement；Second, utilize rotating mechanism to solve fixed measurement apparatus and cannot directly position and measure tube wall thickness thinnest part, thus the problem that cannot directly measure the degree of eccentricity；3rd, a set of x-ray imaging device additional laser scanning means and rotating mechanism solve stationary installation needs the problem that cost produced by two set x-ray imaging devices is high, and the present invention adopts compact structure design to realize the lightweight of measurement apparatus so that rotating.
Accompanying drawing explanation
Fig. 1 is the front view of the tubing measurement device of the present invention；
Fig. 2 is the side view of the tubing measurement device of the present invention；
Fig. 3 a is the principle schematic that radioscopic image sensor obtains tubing cross-sectional image information；
Fig. 3 b is the schematic diagram of the X-ray intensity change during diverse location in the same cross section of X ray traverse tubing；
Fig. 3 c is the relation schematic diagram of tube wall thickness information and the true wall thickness of tubing；
Fig. 4 a is the tubing relation schematic diagram that distance is X-ray intensity during L and irradiation position to X-ray tube；
Fig. 4 b is the tubing relation schematic diagram that distance is X-ray intensity during L ' and irradiation position to X-ray tube；
Fig. 5 is the laser scanning device index path of the tubing measurement device of the present invention；
Fig. 6 a is the measurement apparatus view when a position；
Fig. 6 b is the view after measurement apparatus is rotated by rotating mechanism when another location；
Fig. 7 a is that Fig. 6 a measures the relation schematic diagram of X-ray intensity and irradiation position during position；
Fig. 7 b is that Fig. 6 b measures the relation schematic diagram of X-ray intensity and irradiation position during position.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is further described in detail.
nullAs depicted in figs. 1 and 2，A kind of tubing measurement device provided by the invention，Including frame 8 and the measurement apparatus being arranged in described frame 8，Described measurement apparatus includes the first measurement chamber 18、Second measures chamber 15 and for obtaining the x-ray imaging device of the cross-sectional image information of tubing 9，Described first measurement chamber 18 is a pipeline supplying tubing 9 to be measured traverse，It measures chamber 15 and connects and intersecting vertical setting with described second，Described x-ray imaging device includes X-ray tube 1 and radioscopic image sensor 2，Described X-ray tube 1 is arranged at described second and measures the one end in chamber 15 for sending the X ray of a cross section (not shown) traverse along tubing 9，Described radioscopic image sensor 2 is arranged at described second and measures in chamber 15 other end for receiving through the X ray 13 of tubing 9 to be measured and forming the cross-sectional image information of tubing；All similarly to the prior art, the characteristic penetrated by X ray and the difference penetrating wall thickness can cause the cross-sectional image information being differently formed tubing that X ray is partially absorbed to principles above, are described in detail continuing herein below.And in the tubing measurement device of the present invention:
Described measurement apparatus also includes one for measuring the laser scanning device of the external diameter information of tubing, described laser scanning device includes laser scanning discharger 3 and laser scanning receives device 4, described laser scanning discharger 3 and described X-ray tube 1 are arranged at described second same one end measuring chamber 15, it is for sending the laser beam 14 that another cross section (not shown in Fig. 1 and Fig. 2) along tubing 9 irradiates, and the light path of described laser beam 14 is parallel with the light path of described X ray 13；Described laser scanning receives device 4 and is set up in parallel for receiving the laser beam not blocked by tubing to be measured and forming the external diameter information of tubing with described radioscopic image sensor 2.Laser beam 14 does not possess penetrance, but it irradiates and receives the external diameter information that can form tubing by being received device 4 by laser scanning after tubing, and tubing 9 can't affect the accuracy of external diameter information measurement apart from the distance of laser scanning discharger 3.Hereinafter will there is more detailed description.
So that the measurement result of the tubing measurement device of the present invention is accurate as far as possible, as preferably, the cross section of described X ray 13 traverse is close with the cross section of described laser light irradiation to be overlapped.In the present invention, represent closely close to overlapping, but practical operation can not make again light path be completely superposed, thus be close to it is believed that the cross-sectional image information of the tubing measured by two cross-section and external diameter information unanimously.Simultaneously, in the middle of practical operation, can by arrange reflecting mirror group make two cross sections as close possible to such an extent as to be approximately considered be same cross section, described reflecting mirror group can include at least one first reflecting mirror 10 and one second reflecting mirror 11, described first reflecting mirror 10 and described second reflecting mirror 11 are respectively arranged at described X-ray tube 1 and the side of described radioscopic image sensor 2, and the laser beam 14 that described laser scanning discharger 3 sends reflects so that described laser beam 14 is parallel with described X ray 13 through described first reflecting mirror 10 with described second reflecting mirror 11 successively, described laser scanning receives device 4 and is arranged at described second reflecting mirror 11 side for receiving the laser beam through described second reflecting mirror 11 reflection.It practice, as it is shown in figure 1, in this embodiment, be additionally provided with the 3rd reflecting mirror 12, its effect is also change the light path of laser beam and finally make laser beam reflect in laser scanning reception device 4 certainly.
When the tubing measurement device using the present invention carries out tube wall thickness measurement, if needing to measure the degree of eccentricity of tubing, described laser beam needs to irradiate tubing respectively from different angles.As preferably, described second can be made to measure chamber 15 rotate with the first measurement chamber 18 for axle, specifically, chamber can be measured by described first and be fixedly installed in described frame 8, described second measures chamber 15 and described first measures the through hole (not shown in Fig. 1 and Fig. 2) being provided perpendicular to its each axial sidewall on chamber 18, and described first measures chamber 18 through the through hole on described second measurement chamber 15 and makes both internal cavities connections by the described first through hole measured on chamber 18.So can when needing to measure the tubing degree of eccentricity by rotating the second measurement chamber 15 and obtaining diverse location time the cross-sectional image information of tubing 9, thus find out the size of tubing thickness and thinnest part, thus can obtain the degree of eccentricity size of tubing 9 further.
From the above, described second measure chamber 15 overall need with described first measure chamber for axle rotate time, as preferably, as depicted in figs. 1 and 2, described tubing measurement device also includes a rotating mechanism, described rotating mechanism includes the motor 5 being fixed in described frame 8, it is arranged on the driving gear 6 on described motor output shaft (Fig. 1 and Fig. 2 is not shown) and is set in outside described first measurement chamber 18 and measures, with described second, the driven gear 7 that chamber 15 is connected, described driving gear 6 is nibbled with described driven gear 7 and is driven described driven gear under the driving being incorporated in described motor so that described second measurement chamber 15 is measured chamber 18 around described first and rotated；Now, described x-ray imaging device and described laser scanning device may be contained within the described second internal cavities measuring chamber 15 or outer surface and rotate integrally with described second measurement chamber 15.Meanwhile, as preferably, described first measures chamber 18 and is fixed between the described second driven gear 7 measuring on chamber 15 and is provided with bearing 16.
Actual measurement process and the principle of the tubing measurement device of the present invention is described in detail below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2.The inverted T shape part of Fig. 1 central authorities is that the second measurement chamber 15, X-ray tube 1 and radioscopic image sensor 2 are fixed in the second measurement chamber 15.X-ray tube 1 upwards launches the X ray 13 of tens of kiloelectron-volts.X ray 13 can be absorbed a part behind the cross section of tested tubing 9, it does not have absorbed part can produce the image in tubing 9 cross section on radioscopic image sensor 2.By finding the position of the several key points in this image to can be obtained by the wall thickness information of tubing 9, this information is multiplied by a coefficient and is only the true wall thickness of tubing 9, and the distance dependent of the distance of this coefficient and tubing 9 and X-ray tube 1 and tubing 9 and radioscopic image sensor 2 (physical relationship illustrates, referring to Fig. 3 c, assume that tubing center is x to the distance of X-ray tube 1, tubing center is y to the distance between radioscopic image sensor 2, tubing wall-thickness measurement is z, the true wall thickness of tubing is d, thenCoefficient mentioned above is exactly).Under practical situation, the upper-lower position of tubing 9 always changes, so that become extremely difficult to the true wall thickness of tubing.Introduce the laser scanning device of one of key technology of the present invention to solve this problem, this device can measure the change of the size of tube outer diameter and the upper and lower position of tubing to measuring not impact.This laser scanning device is received device 4 by laser scanning discharger 3 and laser scanning and forms.In addition, first reflecting mirror the 10, second reflecting mirror 11 and the 3rd reflecting mirror 12 are also included to change the direction of laser beam 14 so that it is measure same cross section that laser beam 14 and X ray 13 are approximately considered.Once obtain the external diameter size of tubing 9, then one " chi " the tubing 9 wall thickness information to obtaining on radioscopic image sensor 2 that just can use it as is measured, thus obtaining the true wall thickness of tubing 9.Section 2 key technology is to be achieved by introducing rotating mechanism.For this important indicator of the degree of eccentricity, it is necessary to just can obtain by measuring certain angle tube wall thickness data in cross section, this angle generally can simultaneously measure the size that tube wall is the thinnest and the thickest.The two data recorded just can directly obtain the degree of eccentricity of tube wall thickness through simple operation.The rotating mechanism introduced can make measurement forward such angle to.Rotating mechanism is made up of motor 5, driving gear 6, driven gear 7 and bearing 16.Driven gear 7 and second measures the fixing formation motion parts in chamber 15, and in the present embodiment, motor 5 adopts servomotor, servomotor and driving gear 6 to form stationary part by electric machine support 17 and the first measurement chamber 18.Motion parts and stationary part are connected by bearing 16.The rotation of servomotor makes the second measurement chamber 15 can measure chamber 18 with first and is also carried out rotation for axle.As long as the angular range of the second rotation measuring chamber 15 ensures more than positive and negative 90 degree, the angle that can directly record the tube wall thickness degree of eccentricity just can be contained.
Fig. 3 a and Fig. 3 b illustrates to obtain tubing 9 cross-sectional image and the method obtaining wall thickness information on radioscopic image sensor 2, wherein Fig. 3 a illustrates that radioscopic image sensor obtains the principle schematic of tubing cross-sectional image information, the schematic diagram of X-ray intensity change when Fig. 3 b illustrates X ray through tubing diverse location.Abscissa in Fig. 3 b is the position coordinates in units of pixel, and vertical coordinate is the transmitted intensity size of X ray.We select three characteristic ray a, b and c in X ray 13 to analyze.Wherein ray a and outer pipe wall are tangent, and ray b is tangent with pipe material inner wall, and ray c is just by tubing 9 center, and thinks a, b and c less parallel.It is not passed through the ray of tubing and transmitted intensity that direct irradiation records on radioscopic image sensor 2 is I0；Ray through tubing 9 records transmitted intensity less than I at radioscopic image sensor 20, its size observes Absorption Formula I=I0e-μT(in formula, μ is linear absorption coefficient, and T is the X ray 13 length through tubing path), T is more big, and I is more little.In the picture it will be seen that the transmitted intensity of ray a correspond to I in tubing 9 cross-sectional image0Starting the catastrophe point reduced, its position coordinates is P4.More and more longer through the path of tubing 9 from the ray a ray started to ray b, transmitted intensity is more and more less, and its image presents the trend of monotone decreasing.Ray b is maximum L1 through the path of tubing 9, and therefore the transmitted intensity of ray b correspond to the minimum transmitted intensity I in tubing 9 cross-sectional imagemin, its position coordinates is P3.Shorter and shorter through the path of tubing 9 from the ray b ray started to ray c, so transmitted intensity is increasing, its image presents the trend of monotone increasing.Ray c is L2+L3 through the path of tubing 9, and its transmitted intensity is between IminAnd I0Between, the zone line of image presents a maximum.Ray on the right side of ray c and the ray on the left of it present the relation of symmetry on image, so can find P2 and P1 point by identical method.In image, the difference of position coordinates P4 and P3 is the wall thickness information on the right side of tubing, and the difference of position coordinates P2 and P1 is the wall thickness information on the left of tubing.Wall thickness information needs to be multiplied by a coefficient just can obtain true wall thickness, it can be seen from figure 4 that the upper-lower position of this coefficient and tubing has relation.Fig. 4 a and Fig. 4 b is the change schematic diagram of the measurement result that the change of tubing upper-lower position causes, wherein Fig. 4 a illustrates that tubing is that L(is in conjunction with Fig. 3 c to the distance of X-ray tube, i.e. y=L) time the relation schematic diagram of X-ray intensity and irradiation position, Fig. 4 b illustrates the tubing relation schematic diagram that distance is X-ray intensity during L ' (in conjunction with Fig. 3 c, i.e. y=L ') and irradiation position to X-ray tube.The distance of Fig. 4 a and Fig. 4 b two figure X ray 13 launch point O distance X-ray tube 1 is identical, but in Fig. 4 a, tubing 9 is to the distance L of radioscopic image sensor 2 more than the L ' in Fig. 4 b, can be seen that Fig. 4 a wall thickness information P4-P3 is more than Fig. 4 b wall thickness information P4 '-P3 ' from image.So to calculate true wall thickness, it must be understood that the size of L.Traditional wall thickness measuring device increases by a road x-ray imaging device in the horizontal direction, the while of measuring the distance L that tubing 9 arrives radioscopic image sensor 2, also can measure tubing 9 horizontal direction wall thickness.And the present invention utilizes formula(wall thickness of the tubing 9 on P4-P3 and P4-P1 respectively image and external diameter information；The true external diameter of the true wall thickness of t and D respectively tubing 9) calculate the true wall thickness on the right side of tubing 9.If it is known that the external diameter actual size of tubing 9 is D, then by above-mentioned fortran beJust can obtain the true wall thickness of Fig. 4 a tubing 9, in like manner pass throughCan also drawing the true wall thickness of Fig. 4 b tubing 9, the two wall thickness numerical value is consistent, and the distance L of tubing 9 and radioscopic image sensor 2 it doesn't matter.
The present invention measures the external diameter size of tubing 9 by arranging laser scanning device.It is embodied as shown in Figure 5.Parallel laser beam 14 is sent by laser scanning discharger 3, through reflecting to form of the first reflecting mirror 10.In the scope of the laser beam 14 that tubing 9 is placed on, fraction of laser light light is blocked, it does not have the laser beam 14 blocked by tubing 9 enters laser scanning by the second reflecting mirror 11 and the 3rd reflecting mirror 12 and receives device 4.Laser scanning receives device 4 by analyzing the external diameter being calculated tubing 9 in laser beam 14 by the ratio of tubing 9 shield portions.Owing to laser beam 14 is directional light, so the upper-lower position change of tubing 9 is without influence on the accuracy of outside diameter measuring.And the plane residing for laser beam 14 and the plane residing for X ray 13 are closely, what therefore can be approximately considered they measurements is the same cross section of tubing 9.The external diameter in the same cross section obtained and radioscopic image can obtain the true wall thickness of tubing 9 in conjunction with formula mentioned above.
The degree of eccentricity of tubing 9 can directly be measured by rotating mechanism in the present invention.Tube wall thickness thinnest part principle schematic found by the rotating mechanism that Fig. 6 a and Fig. 6 b is the tubing measurement device of the present invention, wherein Fig. 6 a is the measurement apparatus view when a position, and Fig. 6 b is the view after measurement apparatus is rotated by rotating mechanism when another location.Fig. 7 a is that Fig. 6 a measures the relation schematic diagram of X-ray intensity and irradiation position during position；Fig. 7 b is that Fig. 6 b measures the relation schematic diagram of X-ray intensity and irradiation position during position.For there is the tubing 9 of bias, as shown in Fig. 6 a and Fig. 7 a, when the second measurement chamber 15 is positioned at angle shown in Fig. 6 a, wall thickness information respectively P2-P1 and the P4-P3 obtained in radioscopic image.Second measures chamber 15 rotates at the clockwise under influence of rotating mechanism, and the two wall thickness information recorded can change.The former can be gradually increased, and the latter can be gradually reduced.When second, to measure (Fig. 6 b and Fig. 7 b) wall thickness information P2 '-P1 ' of measuring when chamber 15 is rotated clockwise to certain angle be maximum, and P4 '-P3 ' is minima, namely this angular surveying to be the size that tubing 9 wall thickness is the thickest and the thinnest.Therefore the degree of eccentricity that can be obtained by tubing 9 it is worth most according to the two.Relative to the fixed measurement apparatus adopting two set x-ray imaging devices, the result of the measurement degree of eccentricity of the present invention is more direct and accurate.
Therefore, by the combination of x-ray imaging device, laser scanning device and rotating mechanism, this tube wall thickness, eccentric measuring set can measure tube wall thickness and bias more accurately.Meanwhile, more cheap than the fixed measurement apparatus cost using two set x-ray imaging devices, more light.
What be directed in current patent and product to exist cannot detect tube wall thickness thinnest part, namely can not directly measure the size that tube wall thickness is eccentric.The present invention is above-mentioned x-ray imaging and laser scanning device is mounted with a set of rotary apparatus.X-ray imaging device can being made around tubing axis reciprocating rotary within the scope of positive and negative 90 degree by this rotary apparatus, the angular range of this rotation can ensure that the tube wall thickness thinnest part navigated to, thus directly recording the degree of eccentricity of tubing.
Claims (7)
1. a tubing measurement device, including frame and the measurement apparatus being arranged in described frame, described measurement apparatus includes the first measurement chamber, second measures chamber and for obtaining the x-ray imaging device of the cross-sectional image information of tubing, described first measurement chamber is a pipeline supplying tubing traverse to be measured, it measures chamber and connects and intersecting vertical setting with described second, described x-ray imaging device includes X-ray tube and radioscopic image sensor, described X-ray tube is arranged at described second and measures the one end in chamber for sending along the described second X ray measuring chamber the cross section traverse being perpendicular to described pipe length direction through tubing, described radioscopic image sensor is arranged at described second and measures in the chamber other end for receiving through the X ray of tubing to be measured and forming the cross-sectional image information of tubing, it is characterized in that,
Described measurement apparatus also includes one for measuring the laser scanning device of the external diameter information of tubing, described laser scanning device includes laser scanning discharger and laser scanning receives device, described laser scanning discharger and described X-ray tube are arranged at described second same one end measuring chamber, it is measured chamber along described second for sending and is perpendicular to, through another of tubing, the laser beam that the cross section in described pipe length direction irradiates, and the light path of described laser beam is parallel with the light path of described X ray；Described laser scanning receives device and is arranged at outside described second measurement chamber for receiving the laser beam not blocked by tubing to be measured and forming the external diameter information of tubing.
2. tubing measurement device as claimed in claim 1, it is characterised in that the cross section of described X ray traverse is close with the cross section of described laser light irradiation to be overlapped.
3. tubing measurement device as claimed in claim 2, it is characterized in that, described laser scanning device also includes a reflecting mirror group, described reflecting mirror group includes at least one first reflecting mirror and one second reflecting mirror, described first reflecting mirror and the second reflecting mirror the second measurement intracavity between X-ray tube and described radioscopic image sensor, and the laser beam that described laser scanning discharger sends reflects so that described laser beam is parallel with described X ray with described second reflecting mirror through described first reflecting mirror successively, described laser scanning receives device and is arranged at described second reflecting mirror side for receiving the laser beam through described second reflecting mirror reflection.
4. tubing measurement device as claimed in claim 3, it is characterized in that, described first measures chamber is fixedly installed in described frame, described second measurement chamber and described first is measured and is provided perpendicular to its each axial through hole on the upper side wall of chamber, and described first measures the through hole on the described second measurement chamber of chamber traverse and make both internal cavities connections by the through hole on described first measurement chamber.
5. tubing measurement device as claimed in claim 4, it is characterized in that, described tubing measurement device also includes a rotating mechanism, described rotating mechanism includes the motor being fixed in described frame, the driving gear being arranged on described motor output shaft and is set in outside described first measurement chamber and measures the driven gear that chamber is connected with described second, and described driving gear and described driven gear are nibbled and driven described driven gear under the driving being incorporated in described motor so that described second measures chamber around described first measurement chamber rotation；
Described x-ray imaging device and described laser scanning device may be contained within the described second internal cavities measuring chamber or outer surface and rotate integrally with described second measurement chamber.
6. tubing measurement device as claimed in claim 5, it is characterised in that described first measures chamber and be fixed between the described second driven gear measuring on chamber and be provided with bearing.
7. tubing measurement device as claimed in claim 6, it is characterised in that described second measurement chamber is ± 90 ° around the described first angle measuring chamber rotation.
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| TWI617786B (en) * | 2016-12-13 | 2018-03-11 | 財團法人金屬工業研究發展中心 | Pipe measuring apparatus and measuring method thereof |
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| CN104596430A (en) * | 2015-01-09 | 2015-05-06 | 芜湖航天特种电缆厂 | Caliper |
| CN108844477B (en) * | 2018-06-28 | 2024-04-02 | 西安交通大学 | Portable pipeline external diameter measuring device |
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| CN113959349B (en) * | 2021-10-25 | 2022-04-19 | 湖南捷力泰科技有限公司 | Membrane quality detection device and method |
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| US6377654B1 (en) * | 1999-05-10 | 2002-04-23 | Agfa-Gevaert | Method for measuring the wall thickness of a tubular object |
| CN1746617A (en) * | 2005-09-30 | 2006-03-15 | 电子科技大学 | Thin-membrane thickness and density measurement without sampler |
| EP2600102A1 (en) * | 2010-08-26 | 2013-06-05 | FUJIFILM Corporation | Pipe thickness measurement device and method, and recording medium |
| CN202555603U (en) * | 2012-05-17 | 2012-11-28 | 中铝西南铝冷连轧板带有限公司 | On-line strip X-ray measuring device |
| CN203758474U (en) * | 2014-03-06 | 2014-08-06 | 北京动力源创科技发展有限公司 | Tubing measurement equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI617786B (en) * | 2016-12-13 | 2018-03-11 | 財團法人金屬工業研究發展中心 | Pipe measuring apparatus and measuring method thereof |
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