CN103837106A - Tube measuring equipment - Google Patents
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- CN103837106A CN103837106A CN201410081700.8A CN201410081700A CN103837106A CN 103837106 A CN103837106 A CN 103837106A CN 201410081700 A CN201410081700 A CN 201410081700A CN 103837106 A CN103837106 A CN 103837106A
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Abstract
The invention discloses tube measuring equipment which comprises a rack and a measuring device arranged on the rack. The measuring device further comprises a laser scanning device used for measuring the outer diameter of a tube. The laser scanning device comprises a laser scanning transmitting device and a laser scanning receiving device. The laser scanning transmitting device and an X-ray tube are arranged at the same end of a second measuring cavity. The laser scanning receiving device and an X-ray image sensor are arranged in parallel. The laser scanning receiving device is used for receiving laser rays which are not blocked by the tube to be measured and forming outer diameter information of the tube. According to the tube measuring equipment, the laser scanning device is additionally arranged and can be used for measuring the outer diameter of the tube; since a rotating mechanism is additionally arranged, the thinnest position and the thickest position of the wall of the tube can be found directly, and the maximum thickness and the minimum thickness of the wall of the tube can be measured directly; meanwhile, the problems of eccentric calculation errors and high cost due to the fact that two sets of X-ray imaging devices are needed by a fixed device can be solved.
Description
Technical field
The present invention relates to a kind of measuring equipment, the tubing measuring equipment that particularly parameter such as a kind of thickness to the tubing on tube extrusion line is measured.
Background technology
Comprising automobile, a lot of industries such as chemical industry all will be used rubber or plastic pipe.They for example can be produced by such method: solid-state starting material enter barrel under the propelling movement of screw rod, under the thermal environment of barrel, become semi liquid state.Under the squeezing action of screw rod, the starting material of semi liquid state are extruded from head outlet, have formed tubing.The wall thickness of tubing is controlled by regulating frame head outlet gap size.
After completing and extruding, tubing cross section should have desirable shape, and the center of circle of cylindrical and inner circle should overlap.In fact, production tube always has tolerance, and how many centers of circle of cylindrical and inner circle has certain departing from, and necessarily has certain degree of eccentricity.
It is exactly thickness of pipe and degree of eccentricity that tubing is produced to very important mass parameter, needs these parameters to carry out measurement and monitoring in tubing production run.For measuring wall thickness, the method for useful X-ray measurement.Can be with reference 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 radiation exposure 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 prerequisite of this measuring method is that X-ray tube and tubing distance remains unchanged, but in situation for online production, this often changes apart from meeting, therefore can produce the problem that degree of accuracy is not high.Therefore still there is defect in the method, needs to improve.
After changing in order to ensure tubing upper-lower position, do not affect measuring accuracy, also will obtain the degree of eccentricity of tubing simultaneously, such covering device can be respectively installed on orthogonal both direction.In measuring tubing position, can utilize again the wall thickness information of four points on tubing, derive the bias of tubing by mathematical operation.But this meaning will adopt two cover x-ray imaging devices to be arranged on orthogonal both direction, this scheme adopting as the X-RAY2000 series of products of SIKORA company.But mathematical derivation degree of eccentricity out and real degree of eccentricity remain discrepant.Under extreme case, this difference can exceed the requirement to tubing specification, and the method exists the problem that cost is higher.Therefore, also there is defect in this method of prior art, needs to improve.
Summary of the invention
In view of the problems referred to above that prior art exists, the object of the present invention is to provide the high and lower-cost tubing measuring equipment of a kind of measuring accuracy.
To achieve these goals, a kind of tubing measuring equipment provided by the invention, comprise frame and be arranged at the measurement mechanism in described frame, described measurement mechanism comprises the first measurement chamber, second measures chamber and for obtaining the x-ray imaging device of cross-sectional image information of tubing, described the first measurement chamber is a pipeline passing for tubing to be measured, it is measured chamber and is communicated with and intersects vertical setting with described second, described x-ray imaging device comprises X-ray tube and radioscopic image sensor, described X-ray tube is arranged at described second one end of measuring chamber and measures chamber the X ray that xsect passes perpendicular to described pipe length direction through tubing for sending along described second, described radioscopic image sensor setting is measured 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 in described second, wherein, described measurement mechanism also comprises that one for measuring the laser scanning device of external diameter information of tubing, described laser scanning device comprises laser scanning emitter and laser scanning receiving trap, described laser scanning emitter and described X-ray tube are arranged at the same one end in described the second measurement chamber, it is for sending the laser beam of measuring chamber and irradiating through another xsect perpendicular to described pipe length direction of tubing along described second, the light path of described laser beam and the light path parallel of described X ray, described laser scanning receiving trap is arranged at described second and measures outside chamber for receiving the laser beam not blocked by tubing to be measured and forming the external diameter information of tubing.
As preferably, the xsect that described X ray passes approaches and overlaps with the xsect of described laser light irradiation.In the present invention, approaching overlaps represents very approachingly, but in practical operation, can not make again light path overlap completely, and institute is so that it is close to can think by the cross-sectional image information of the tubing of two cross-section measurements and external diameter information unanimously.
As preferably, described laser scanning device also comprises a catoptron group, described catoptron group comprises at least one the first catoptron and one second catoptron, in described the first catoptron and the second catoptron the second measurement chamber between X-ray tube and described radioscopic image sensor, and the laser beam that described laser scanning emitter sends reflects so that described laser beam is parallel with described X ray with described the second catoptron through described the first catoptron successively, described laser scanning receiving trap is arranged at described the second catoptron one side for receiving the laser beam through described the second catoptron reflection.
As preferably, described first measures chamber is fixedly installed in described frame, described second measures chamber and described first measures and on chamber upper side wall, is provided with perpendicular to its axial through hole separately, and described first measures chamber measures the through hole on chamber and by the described first through hole of measuring on chamber, both internal cavities is communicated with through described second.
As preferably, described tubing measuring equipment also comprises a rotating mechanism, described rotating mechanism comprises the motor being fixed in described frame, the follower gear that is arranged on the driving gear on described motor output shaft and is set in described the first outside, measurement chamber and is connected with described the second measurement chamber, and described driving gear and described follower gear are nibbled under the driving that is incorporated in described motor and driven described follower gear so that described the second measurement chamber rotates around described the first measurement chamber;
Described x-ray imaging device and described laser scanning device are all arranged at described second and measure internal cavities or the outer surface in chamber and rotate with described the second measurement chamber one.
As preferably, described first measures between chamber and the follower gear being fixed on described the second measurement chamber and is provided with bearing.
As preferably, described second to measure chamber be ± 90 ° around the described first angle of measuring chamber rotation.
Compared with prior art, the present invention has following beneficial effect: the first, and utilizing the additional laser scanning device of single channel x-ray imaging device to solve tubing change in location can affect the problem of measuring accuracy; The second, utilize rotating mechanism to solve fixed measurement mechanism and cannot directly locate and measure tube wall thickness thinnest part, thereby cannot directly measure the problem of degree of eccentricity; The 3rd, a set of x-ray imaging device additional laser scanister and rotating mechanism solve the high problem of cost that stationary installation needs two cover x-ray imaging devices to produce, and the present invention adopts compact structure design to realize the lightweight of measurement mechanism so that rotate.
Accompanying drawing explanation
Fig. 1 is the front view of tubing measuring equipment of the present invention;
Fig. 2 is the side view of tubing measuring equipment of the present invention;
Fig. 3 a is the principle schematic that radioscopic image sensor obtains tubing cross-sectional image information;
The schematic diagram of X ray Strength Changes when Fig. 3 b is the diverse location in the X ray same cross section of passing tubing;
Fig. 3 c be tube wall thickness information and tubing true wall thickness be related to schematic diagram;
Fig. 4 a is the schematic diagram that is related to of the X ray intensity of tubing while being L to the distance of X-ray tube and irradiation position;
Fig. 4 b is the schematic diagram that is related to of the X ray intensity of tubing while being L ' to the distance of X-ray tube and irradiation position;
Fig. 5 is the laser scanning device index path of tubing measuring equipment of the present invention;
Fig. 6 a is the view of measurement mechanism in the time of a position;
Fig. 6 b is the view in the time of another location after measurement mechanism rotates by rotating mechanism;
When Fig. 7 a is Fig. 6 a measuring position, X ray intensity and irradiation position is related to schematic diagram;
When Fig. 7 b is Fig. 6 b measuring position, X ray intensity and irradiation position is related to schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is further described in detail.
As depicted in figs. 1 and 2, a kind of tubing measuring equipment provided by the invention, comprise frame 8 and be arranged at the measurement mechanism in described frame 8, described measurement mechanism comprises the first measurement chamber 18, second measures chamber 15 and for obtaining the x-ray imaging device of cross-sectional image information of tubing 9, described the first measurement chamber 18 is a pipeline passing for tubing 9 to be measured, it is measured chamber 15 and is communicated with and intersects vertical setting with described second, described x-ray imaging device comprises X-ray tube 1 and radioscopic image sensor 2, described X-ray tube 1 is arranged at described second one end of measuring chamber 15 for sending an X ray that xsect (not shown) is passed along tubing 9, described radioscopic image sensor 2 is arranged at described second and measures in chamber 15 other ends 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 penetrating by X ray and the difference that penetrates wall thickness can cause difference that X ray is partially absorbed to form the cross-sectional image information of tubing to above principle, and the application is hereinafter described in detail continuing.And in tubing measuring equipment of the present invention:
Described measurement mechanism also comprises that one for measuring the laser scanning device of external diameter information of tubing, described laser scanning device comprises laser scanning emitter 3 and laser scanning receiving trap 4, described laser scanning emitter 3 and described X-ray tube 1 are arranged at the same one end in described the second measurement chamber 15, the laser beam 14 that it irradiates for another xsect (Fig. 1 and Fig. 2 are not shown) sending along tubing 9, the light path parallel of the light path of described laser beam 14 and described X ray 13; Described laser scanning receiving trap 4 and described radioscopic image sensor 2 are set up in parallel for receiving the laser beam not blocked by tubing to be measured and forming the external diameter information of tubing.Laser beam 14 does not possess penetrability, but it irradiates the external diameter information by can be formed tubing after tubing by 4 receptions of laser scanning receiving trap, and tubing 9 can't affect the accuracy of external diameter information measurement apart from the distance of laser scanning emitter 3.Hereinafter more detailed description will be had.
In order to make the measurement result of tubing measuring equipment of the present invention accurate as far as possible, as preferably, the xsect that described X ray 13 passes approaches and overlaps with the xsect of described laser light irradiation.In the present invention, approaching overlaps represents very approachingly, but in practical operation, can not make again light path overlap completely, and institute is so that it is close to can think by the cross-sectional image information of the tubing of two cross-section measurements and external diameter information unanimously.Simultaneously, in the middle of practical operation, can two xsects be approached as far as possible to such an extent as to approximate think same xsect by catoptron group is set, described catoptron group can comprise at least one the first catoptron 10 and one second catoptron 11, described the first catoptron 10 and described the second catoptron 11 are arranged at respectively a side of described X-ray tube 1 and described radioscopic image sensor 2, and the laser beam 14 that described laser scanning emitter 3 sends reflects so that described laser beam 14 is parallel with described X ray 13 through described the first catoptron 10 and described the second catoptron 11 successively, described laser scanning receiving trap 4 is arranged at described the second catoptron 11 1 sides for receiving the laser beam reflecting through described the second catoptron 11.In fact, as shown in Figure 1, in this embodiment, be also provided with the 3rd catoptron 12, its effect is also change the light path of laser beam and finally make laser beam be reflected in laser scanning receiving trap 4 certainly.
In the time using tubing measuring equipment of the present invention to carry out tube wall thickness measurement, if need to measure the degree of eccentricity of tubing, described laser beam needs respectively from different angular illumination tubing.As preferably, can make described the second measurement chamber 15 be rotated take the first measurement chamber 18 as axle, particularly, can measure chamber by described first is fixedly installed in described frame 8, described second measures chamber 15 and described first measures and is provided with on chamber 18 perpendicular to its through hole of axial sidewall (not shown in Fig. 1 and Fig. 2) separately, and described first measures chamber 18 measures the through hole on chamber 15 and by the described first through hole of measuring on chamber 18, both internal cavities is communicated with through described second.Like this can be in the time need to measuring tubing degree of eccentricity by rotating the cross-sectional image information of the tubing 9 of the second measurement chamber 15 while obtaining diverse location, find out thus the size of tubing thickness and thinnest part, can further obtain thus the degree of eccentricity size of tubing 9.
From the above, described second measures chamber 15 entirety need to measure chamber when axle rotates take described first, as preferably, as depicted in figs. 1 and 2, described tubing measuring equipment also comprises a rotating mechanism, described rotating mechanism comprises the motor 5 being fixed in described frame 8, be arranged on the driving gear 6 on described motor output shaft (Fig. 1 is not shown with Fig. 2) and be set in described first and measure 18 outsides, chamber and measure with described second the follower gear 7 that chamber 15 is connected, described driving gear 6 is nibbled under the driving that is incorporated in described motor and is driven described follower gear so that described the second measurement chamber 15 rotates around described the first measurement chamber 18 with described follower gear 7, now, described x-ray imaging device and described laser scanning device are all arranged at internal cavities or the outer surface in described the second measurement chamber 15 and rotate with described the second measurement chamber 15 one.Meanwhile, as preferably, described first measures between chamber 18 and the follower gear 7 being fixed on described the second measurement chamber 15 and is provided with bearing 16.
Describe actual measurement process and the principle of tubing measuring equipment of the present invention 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 the second measurement chamber 15, and X-ray tube 1 and radioscopic image sensor 2 are fixed in the second measurement chamber 15.X-ray tube 1 is upwards launched 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, does not have absorbed part can on radioscopic image sensor 2, produce the image in tubing 9 cross sections.By finding the position of the several key points in this image just can obtain 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 is illustrated as, referring to Fig. 3 c, suppose 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, so
coefficient mentioned above is exactly
).Under actual conditions, the upper-lower position of tubing 9 always changes, and becomes very difficult thereby make to obtain the true wall thickness of tubing.In order to address this problem the laser scanning device of having introduced one of gordian technique of the present invention, this device can be measured the variation of the size of tube outer diameter and the upper and lower position of tubing to measuring not impact.This laser scanning device is made up of laser scanning emitter 3 and laser scanning receiving trap 4.In addition, also comprise that the first catoptron 10, the second catoptron 11 and the 3rd catoptron 12 change the direction of laser beam 14, laser beam 14 and X ray 13 are similar to and think to measure same cross section.Once obtain the external diameter size of tubing 9, so just can use it as one " chi " the tubing 9 wall thickness information that obtain on radioscopic image sensor 2 are measured, thereby obtain the true wall thickness of tubing 9.Section 2 gordian technique is to be achieved by introducing rotating mechanism.For this important indicator of degree of eccentricity, must just can obtain by certain angle tube wall thickness data of measuring cross section, in this angle, generally can measure the size that tube wall is the thinnest and the thickest simultaneously.Two data of this recording just can directly obtain the degree of eccentricity of tube wall thickness through simple operation.The rotating mechanism of introducing can make to measure and forward such angle to.Rotating mechanism is made up of motor 5, driving gear 6, follower gear 7 and bearing 16.Follower gear 7 and second is measured the fixing motion parts that forms in chamber 15, and in the present embodiment, motor 5 adopts servomotor, and servomotor and driving gear 6 are measured chamber 18 by electric machine support 17 and first and formed stationary part.Motion parts is connected by bearing 16 with stationary part.The rotation of servomotor can also be rotated take the first measurement chamber 18 as axle the second measurement chamber 15.The second angular range of measuring the rotation in chamber 15 needs only and guarantees to be greater than positive and negative 90 degree, just can contain the angle that can directly record tube wall thickness degree of eccentricity.
Fig. 3 a and Fig. 3 b have illustrated to obtain tubing 9 cross-sectional images on radioscopic image sensor 2 and have obtained the method for wall thickness information, wherein Fig. 3 a shows radioscopic image sensor and obtains the principle schematic of tubing cross-sectional image information, the schematic diagram of X ray Strength Changes when Fig. 3 b shows X ray through tubing diverse location.Horizontal ordinate in Fig. 3 b is the position coordinates take pixel as unit, and ordinate is the transmitted intensity size of X ray.We select three characteristic ray a, b and the c in X ray 13 to analyze.Wherein ray a and outer pipe wall are tangent, and ray b and pipe material inner wall are tangent, and ray c is just in time by tubing 9 centers, and think a, and b is approximate parallel with c.The transmitted intensity that direct irradiation does not record on radioscopic image sensor 2 through the ray of tubing is I
0; Record transmitted intensity through the ray of tubing 9 at radioscopic image sensor 2 and be less than I
0, its size is observed Absorption Formula I=I
0e
-μ T(in formula, μ is linear absorption coefficient, and T is the length of X ray 13 through tubing path), T is larger, and I is less.In image, can see, the transmitted intensity correspondence of ray a I in tubing 9 cross-sectional images
0the catastrophe point that starts to reduce, its position coordinates is P4.Start to the ray ray b more and more longlyer through the path of tubing 9 from ray a, transmitted intensity is more and more less, and its image presents the trend of monotone decreasing.Ray b is maximal value L1 through the path of tubing 9, and therefore the transmitted intensity correspondence of ray b the minimum transmitted intensity I in tubing 9 cross-sectional images
min, its position coordinates is P3.Start to the ray ray c shorter and shorterly through the path of tubing 9 from ray b, 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 I
minand I
0between, in the zone line of image, present a maximum value.The ray in the ray on ray c right side and its left side presents symmetrical relation 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 tubing right side, and the difference of position coordinates P2 and P1 is the wall thickness information in tubing left side.Wall thickness informational needs is multiplied by a coefficient just can obtain true wall thickness, and as can see from Figure 4, the upper-lower position of this coefficient and tubing has relation.Fig. 4 a and Fig. 4 b are the variation schematic diagram that tubing upper-lower position changes the measurement result causing, wherein to show tubing be that L(is in conjunction with Fig. 3 c to the distance of X-ray tube to Fig. 4 a, be y=L) time X ray intensity and irradiation position be related to schematic diagram, X ray intensity when Fig. 4 b shows tubing and is L ' (in conjunction with Fig. 3 c, i.e. y=L ') to the distance of X-ray tube and irradiation position be related to schematic diagram.Fig. 4 a is identical with the distance of Fig. 4 b two figure X ray 13 launching site O distance X ray tubes 1, but tubing 9 is greater than the L ' in Fig. 4 b to the distance L of radioscopic image sensor 2 in Fig. 4 a, from image, can find out that Fig. 4 a wall thickness information P4-P3 is greater than Fig. 4 b wall thickness information P4 '-P3 '.So calculate true wall thickness, must know the size of L.Traditional wall thickness measuring device increases by a road x-ray imaging device in the horizontal direction, measures the distance L while of tubing 9 to radioscopic image sensor 2, also can measure tubing 9 horizontal direction wall thickness.And the present invention utilizes formula
(P4-P3 and P4-P1 are respectively wall thickness and the external diameter information of the tubing 9 on image; T and D are respectively the true external diameter of the true wall thickness of tubing 9) calculate the true wall thickness on tubing 9 right sides.If know that the external diameter actual size of tubing 9 is D, by above-mentioned fortran is so
the true wall thickness that just can obtain Fig. 4 a tubing 9, in like manner passes through
also can draw the true wall thickness of Fig. 4 b tubing 9, these two wall thickness numerical value are 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 laser scanning device is set.Concrete enforcement as shown in Figure 5.Parallel laser beam 14 is sent by laser scanning emitter 3, through reflecting to form of the first catoptron 10.In the scope of the laser beam 14 that tubing 9 is placed on, part laser beam is blocked, and the laser beam 14 not blocked by tubing 9 enters laser scanning receiving trap 4 by the second catoptron 11 and the 3rd catoptron 12.Laser scanning receiving trap 4 is by analyzing the external diameter that is calculated tubing 9 in laser beam 14 by the ratio of tubing 9 shield portions.Because laser beam 14 is directional lights, so the upper-lower position of tubing 9 changes the accuracy that can not affect outside diameter measuring.And due to the residing plane of laser beam 14 and the residing plane of X ray 13 very approaching, therefore can be similar to think their measure be the same cross section of tubing 9.The external diameter in the same cross section obtaining and radioscopic image can obtain the true wall thickness of tubing 9 in conjunction with formula mentioned above.
Rotating mechanism in the present invention can directly be measured the degree of eccentricity of tubing 9.Fig. 6 a and Fig. 6 b are that the rotating mechanism of tubing measuring equipment of the present invention is found tube wall thickness thinnest part principle schematic, wherein Fig. 6 a is the view of measurement mechanism in the time of a position, and Fig. 6 b is the view in the time of another location after measurement mechanism rotates by rotating mechanism.When Fig. 7 a is Fig. 6 a measuring position, X ray intensity and irradiation position is related to schematic diagram; When Fig. 7 b is Fig. 6 b measuring position, X ray intensity and irradiation position is related to schematic diagram.For there being eccentric tubing 9, 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, the wall thickness information obtaining in radioscopic image is respectively P2-P1 and P4-P3.Second measures chamber 15 turns clockwise under the effect of rotating mechanism, and two wall thickness information of this recording can change.The former can increase gradually, and the latter can reduce gradually.In the time that the second measurement chamber 15 is rotated clockwise to certain angle (wall thickness information P2 '-P1 ' that Fig. 6 b and Fig. 7 b) measure is maximal value, and P4 '-P3 ' is minimum value, this measurement of angle to be the thickest and the thinnest size of tubing 9 wall thickness.Therefore according to these two value just can obtain the degree of eccentricity of tubing 9.With respect to the fixed measurement mechanism that adopts two cover x-ray imaging devices, the result of 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 be measured tube wall thickness and bias more accurately.Meanwhile, more cheaper, more light than using the fixed measurement mechanism cost of two cover x-ray imaging devices.
Be directed in current patent and product, exist tube wall thickness thinnest part cannot be detected, can not directly measure the size of tube wall thickness bias.The present invention is that above-mentioned x-ray imaging and laser scanning device have been installed a set of whirligig.Can make x-ray imaging device around tubing axis reciprocating rotary within the scope of positive and negative 90 degree by this whirligig, the angular range of this rotation can be guaranteed the tube wall thickness thinnest part navigating to, thereby directly records the degree of eccentricity of tubing.
Claims (7)
1. a tubing measuring equipment, comprise frame and be arranged at the measurement mechanism in described frame, described measurement mechanism comprises the first measurement chamber, second measures chamber and for obtaining the x-ray imaging device of cross-sectional image information of tubing, described the first measurement chamber is a pipeline passing for tubing to be measured, it is measured chamber and is communicated with and intersects vertical setting with described second, described x-ray imaging device comprises X-ray tube and radioscopic image sensor, described X-ray tube is arranged at described second one end of measuring chamber and measures chamber the X ray that xsect passes perpendicular to described pipe length direction through tubing for sending along described second, described radioscopic image sensor setting is measured 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 in described second, it is characterized in that,
Described measurement mechanism also comprises that one for measuring the laser scanning device of external diameter information of tubing, described laser scanning device comprises laser scanning emitter and laser scanning receiving trap, described laser scanning emitter and described X-ray tube are arranged at the same one end in described the second measurement chamber, it is for sending the laser beam of measuring chamber and irradiating through another xsect perpendicular to described pipe length direction of tubing along described second, the light path of described laser beam and the light path parallel of described X ray; Described laser scanning receiving trap is arranged at described second and measures outside chamber for receiving the laser beam not blocked by tubing to be measured and forming the external diameter information of tubing.
2. tubing measuring equipment as claimed in claim 1, is characterized in that, the xsect that described X ray passes approaches and overlaps with the xsect of described laser light irradiation.
3. tubing measuring equipment as claimed in claim 2, it is characterized in that, described laser scanning device also comprises a catoptron group, described catoptron group comprises at least one the first catoptron and one second catoptron, in described the first catoptron and the second catoptron the second measurement chamber between X-ray tube and described radioscopic image sensor, and the laser beam that described laser scanning emitter sends reflects so that described laser beam is parallel with described X ray with described the second catoptron through described the first catoptron successively, described laser scanning receiving trap is arranged at described the second catoptron one side for receiving the laser beam through described the second catoptron reflection.
4. tubing measuring equipment as claimed in claim 3, it is characterized in that, described first measures chamber is fixedly installed in described frame, described second measures chamber and described first measures and on chamber upper side wall, is provided with perpendicular to its axial through hole separately, and described first measures chamber measures the through hole on chamber and by the described first through hole of measuring on chamber, both internal cavities is communicated with through described second.
5. tubing measuring equipment as claimed in claim 4, it is characterized in that, described tubing measuring equipment also comprises a rotating mechanism, described rotating mechanism comprises the motor being fixed in described frame, the follower gear that is arranged on the driving gear on described motor output shaft and is set in described the first outside, measurement chamber and is connected with described the second measurement chamber, and described driving gear and described follower gear are nibbled under the driving that is incorporated in described motor and driven described follower gear so that described the second measurement chamber rotates around described the first measurement chamber;
Described x-ray imaging device and described laser scanning device are all arranged at described second and measure internal cavities or the outer surface in chamber and rotate with described the second measurement chamber one.
6. tubing measuring equipment as claimed in claim 5, is characterized in that, described first measures chamber is provided with bearing with being fixed between the follower gear of described the second measurement on chamber.
7. tubing measuring equipment as claimed in claim 6, is characterized in that, described the second measurement chamber is ± 90 ° around the described first angle of measuring chamber rotation.
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| CN104596430A (en) * | 2015-01-09 | 2015-05-06 | 芜湖航天特种电缆厂 | Caliper |
| CN108844477A (en) * | 2018-06-28 | 2018-11-20 | 西安交通大学 | A kind of portable pipe external diameter measuring device |
| CN112881437A (en) * | 2021-01-13 | 2021-06-01 | 华东交通大学 | Contact net detecting system that detects a flaw |
| CN113959349A (en) * | 2021-10-25 | 2022-01-21 | 湖南捷力泰科技有限公司 | Membrane quality detection device and method |
| CN117434084A (en) * | 2023-12-06 | 2024-01-23 | 四川万圣通实业有限公司 | Digital detection device and detection method for steel pipe |
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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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