CN109059823A - A kind of detection system measuring line size parameter - Google Patents

A kind of detection system measuring line size parameter Download PDF

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Publication number
CN109059823A
CN109059823A CN201811094493.4A CN201811094493A CN109059823A CN 109059823 A CN109059823 A CN 109059823A CN 201811094493 A CN201811094493 A CN 201811094493A CN 109059823 A CN109059823 A CN 109059823A
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China
Prior art keywords
detection
outer diameter
pipeline
probe
axial
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CN201811094493.4A
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Chinese (zh)
Inventor
陆赛浩
陈林
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Dongyuan Jiangsu Valve Testing Technology Co Ltd
Jiangsu Shentong Valve Co Ltd
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Dongyuan Jiangsu Valve Testing Technology Co Ltd
Jiangsu Shentong Valve Co Ltd
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Application filed by Dongyuan Jiangsu Valve Testing Technology Co Ltd, Jiangsu Shentong Valve Co Ltd filed Critical Dongyuan Jiangsu Valve Testing Technology Co Ltd
Priority to CN201811094493.4A priority Critical patent/CN109059823A/en
Publication of CN109059823A publication Critical patent/CN109059823A/en
Withdrawn legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant

Abstract

A kind of detection system measuring line size parameter, it include: detection device, detection platform and computer, detection device is at least 1, and it is installed on detection platform, the collected data of detection device are transmitted to computer, computer obtains line size parameter by analytical calculation, and shows result.The beneficial effects of the present invention are: 1, detection system of the present invention simplifies artificial detection process, reduce detection operation intensity, reduces human error, improve detection accuracy and efficiency;2, detection range of the present invention is wide, can examine straight tube, S type bend pipe, U-shaped bend pipe, Y-type three way type pipeline;3, detection system of the present invention uses automatic detection, greatly improves detection efficiency;4, the technical parameter of the detected pipeline of detection system of the present invention is more, contains all Pipe installing associated technical parameters.

Description

A kind of detection system measuring line size parameter
Technical field
The present invention relates to a kind of detection system, especially a kind of detection system for measuring line size parameter.
Background technique
Pipeline is widely used in mechanical equipment and pipe-line system, when pipeline is for the neck such as oil transportation, gas transmission, infusion, defeated sample In the pipeline engineering of domain, site operation requires the size that Tube formation is related to very strict.Therefore inside and outside pipeline wall thickness, pipeline Circularity, the angle of pipeline end face and central axis, the spacing in the pipeline front and back installation end end face center of circle inside and outside roughness, pipeline From and installation end axis between the technical parameters such as angle seem particularly significant, so must examine whether pipeline installation dimension meets It is required that.
Line size is examined in measurement at present, and artificial detection method can be used: utilizing vernier caliper, ellipsograph, roughness concentration The simple detection instrument such as instrument measures line size.This method relatively takes time and effort, and is not suitable for high-volume pipeline Detection, while detection accuracy not can guarantee.In addition the method that three-dimensional imaging can also be used in detection pipeline sweeps pipeline Imaging is retouched, although can detecte pipeline outer dimension, still needs artificially to find the benchmark progress later period in 3-D image Analysis, inefficiency;It and can not scanning imagery for the inside of small-bore pipeline installation end, it is desired nonetheless to by artificial Detection, not can guarantee and detect under same benchmark, measurement error is big.
Summary of the invention
The shortcomings that in order to overcome existing detection device, present invention offer detection range is wide, detection efficiency is high, detection accuracy is quasi- Measurement line size parameter detection system.
The technical solution adopted by the present invention to solve the technical problems is a kind of detection system for measuring line size parameter, packet Include: detection device, detection platform and computer, detection device is at least 1, and is installed on detection platform, detection dress It sets collected data and is transmitted to computer, computer obtains line size parameter by analytical calculation, and shows result;
Detection device is made of detection module and three axle modules, and three axle modules are rolled by X-axis ball screw, Y-axis ball screw, Z axis Ballscrew assembles, for adjusting detection module along the movement of X-axis, Y-axis, Z axis;
Detection module is by outer diameter detection probe, inner diameter measurement probe, annular retractable set, cylinder telescopic rod, horizontal rotary mechanism, perpendicular Direct rotary rotation mechanism, axial-rotation mechanism and fixed mechanism composition;Fixed mechanism is fixedly connected with Z axis ball screw, is rotated horizontally Rotated in the horizontal direction after mechanism and fixed mechanism are hinged, vertical rotating mechanism and horizontal rotary mechanism it is hinged after in vertical direction Rotation, axial-rotation mechanism and vertical rotating mechanism hingedly carry out axial-rotation afterwards;Annular retractable set for ring-type, and with axial rotation Rotation mechanism is fixedly connected, and cylinder telescopic rod is located at the center of annular retractable set and is fixedly connected with axial-rotation mechanism;Annular is stretched The end of contracting set is fixedly connected with outer diameter detection probe, outer diameter detection probe at least two and be even number, and circumferencial direction pair Claim distribution;Cylinder telescopic rod end is fixedly connected with inner diameter measurement probe;Outer diameter detection probe and inner diameter measurement probe be located at On one sagittal plane, outer diameter detection probe and inner diameter measurement probe use high-precision laser range-finding sensor, and realization is adjusted the distance Detection;
Outer diameter detection probe and synchronous with horizontal rotary mechanism, vertical rotating mechanism, axial-rotation mechanism turn of inner diameter measurement probe It is dynamic, and follow the X-axis ball screw, Y-axis ball screw, Z axis ball screw synchronizing moving of three axle modules;
Annular retractable set and cylinder telescopic rod axial stretching drive outer diameter detection probe and inner diameter measurement probe axial displacement;
Detection platform be equipped with position reference point O(0,0,0), detection device is in using the coordinate system of the position reference point as zero point Positional relationship is established, the central point of detection module is the center A of vertical rotating mechanism, and the coordinate of the center A of detection module is (Lx, Ly, Lz).
The beneficial effects of the present invention are:
1, detection system of the present invention simplifies artificial detection process, reduces detection operation intensity, reduces human error, improves Detection accuracy and efficiency.
2, detection range of the present invention is wide, can examine straight tube, S type bend pipe, U-shaped bend pipe, Y-type three way type pipeline.
3, detection system of the present invention uses automatic detection, greatly improves detection efficiency.
4, the technical parameter of the detected pipeline of detection system of the present invention is more, contains all Pipe installing the relevant technologies ginsengs Number.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment;
The structure chart of detection device 111 in Fig. 2 book Fig. 1;
Fig. 3 is the structure chart of detection module 100 in Fig. 2;
Fig. 4 is the cross-sectional view of the A-A of Fig. 3;
Fig. 5 is each freedom degree kinematic parameter schematic diagram of detection device 111 in Fig. 1;
Fig. 6 is conduit axis schematic diagram in the three-dimensional system of coordinate of computer simulation.
In figure: 001. tested pipeline;002. detection end face;003. pipeline end face;111. detection device;222. detections are flat Platform;333. computer;100. detection module;200. 3 axle modules;201. X-axis ball screw;202. Y-axis ball screw; 203. Z axis ball screws;101. outer diameter detection probe;102. inner diameter measurement is popped one's head in;103. annular retractable set;104. circle Column telescopic rod;105. axial-rotation mechanism;106. vertical rotating mechanism;107. horizontal rotary mechanism;108. fixed mechanism.
Specific embodiment
As shown in Figure 1, a kind of detection system for measuring line size parameter, comprising: detection device 111, detection platform 222 And computer 333, detection device 111 are at least 1, are 2 in the embodiment of Fig. 1, are separately positioned on tested pipeline 001 Both ends, detection device 111 are installed on detection platform 222, and the collected data of detection device 111 are transmitted to computer 333, Computer 333 obtains line size parameter by analytical calculation, and shows result;
As shown in Fig. 2, detection device 111 is made of detection module 100 and three axle modules 200, three axle modules 200 are by X-axis ball Screw rod 201, Y-axis ball screw 202, Z axis ball screw 203 assemble, for adjust detection module 100 along X-axis, Y-axis, The movement of Z axis;
As shown in Figure 3,4, detection module covers 103, cylinder by outer diameter detection probe 101, inner diameter measurement probe 102, annular retractable Telescopic rod 104, horizontal rotary mechanism 107, vertical rotating mechanism 106, axial-rotation mechanism 105 and fixed mechanism 108 form;Gu Determine mechanism 108 to be fixedly connected with Z axis ball screw 203, in level side after horizontal rotary mechanism 107 and fixed mechanism 108 are hinged To rotation, rotated in vertical direction after vertical rotating mechanism 106 and horizontal rotary mechanism 107 are hinged, axial-rotation mechanism 105 with Axial-rotation is carried out after vertical rotating mechanism 106 is hinged;Annular retractable set 103 is ring-type, and fixed with axial-rotation mechanism 105 Connection, cylinder telescopic rod 104 are located at the center of annular retractable set 103 and are fixedly connected with axial-rotation mechanism 105;Annular retractable The end of set 103 is fixedly connected with outer diameter detection probe 101, outer diameter detection probe 101 at least two and be even number, and circumference Direction is symmetrical;104 end of cylinder telescopic rod is fixedly connected with inner diameter measurement probe 102;Outer diameter detection probe 101 and internal diameter inspection Probing head 102 is located at on a sagittal plane, and outer diameter detection probe 101 and inner diameter measurement probe 102 are swashed using high-precision Ligh-ranging sensor realizes the detection adjusted the distance;
Outer diameter detection probe 101 and inner diameter measurement probe 102 and horizontal rotary mechanism 107, vertical rotating mechanism 106, axial rotation Rotation mechanism 105 rotates synchronously, and follows the X-axis ball screw 201, Y-axis ball screw 202, Z axis ball wire of three axle modules 200 203 synchronizing moving of bar;
Annular retractable set 103 and 104 axial stretching of cylinder telescopic rod drive outer diameter detection probe and inner diameter measurement probe axial Displacement;
As shown in Figure 1, detection platform 222 be equipped with position reference point O(0,0,0), detection device 111 is with the position reference point To establish positional relationship in the coordinate system of zero point, as shown in figure 5, the central point of detection module 100 is vertical rotating mechanism 106 The coordinate of center A, the center A of detection module 100 are (Lx, Ly, Lz).
Detecting step is as follows:
Tested pipeline 001 is fixed in detection platform 222 by the first step, and there are two Pipe installing ends for tested pipeline 001, is being examined It surveys the installation end position on platform 222 close to tested pipeline 001 and a set of detection device 111 is respectively installed, detection device 111 includes Detection module 100 and three axle modules 200, two detection modules 100 are all using 222 datum mark O of detection platform as the seat of zero point Positional relationship is established in mark system.
Pipeline wall thickness, pipeline circularity, pipe are arranged according to the technical parameter of tested pipeline 001 in computer 333 for second step The installation end end face center of circle before and after roughness, pipeline inside and outside the angle of road installation end end face and central axis, Pipe installing end Between the parameters such as angle and corresponding acceptable deviation between distance and installation end axis.
Third step, according to each freedom degree of position coarse adjustment detection device 111 of the pipeline end face 003 of tested pipeline 001 Movement makes the detection end face 002 of detection module 100 be directed at the pipeline end face 003 of tested pipeline 001.
Coordinate (Lx, Ly, Lz) of the 100 module centers point A of Inventory Detection Module relative to 222 datum mark of detection platform;Together When computer 333 Inventory Detection Module 100 relative datum coordinate position O horizontal deflection angle δ, vertical deflection angle θ, conversion obtains Telescopic moving distance L of the detection sectional plane center of circle A1 of detection module 100 apart from 100 module centers point of detection module;Detect mould Coordinate position (X, Y, Z)=(Lx+ of 100 detection sectional plane center of circle A1 of block、Ly+, Lz+), Simultaneously can convert the unit vector [m1, m2, m3] obtained 100 axis direction of detection module in three-dimensional system of coordinate=[] 。
4th step, Reference detection positions positioning: detection module 100 carries out axial-rotation detection around tested pipeline 001, together When slowly protrude into tested pipeline 001 expand detection range, when all probes of detection module 100 can collect data, calculate Data (A1, A2, A3 ... .An) of the collected outer diameter detection probe 101 of 333 Inventory Detection Module of machine 100 apart from pipeline outer wall, Data (B1, B2, B3 ... .Bn) of the inner diameter measurement probe 102 apart from inner wall of the pipe.Computer 333 analyzes two groups of data It is [m4, m5, m6] that 001 pipeline one end axis unit vector of tested pipeline, which is calculated,.Control axial-rotation in detection module 100 Mechanism 105, vertical rotating mechanism 106, horizontal rotary mechanism 107 move so that 100 axis direction unit vector of detection module with 001 pipeline one end axis unit vector of tested pipeline is consistent, i.e., is also [m4, m5, m6], at this time 100 axis of detection module It is overlapped with two axis of 001 pipeline one end of tested pipeline.Outer diameter detection probe 101 in detection module 100 at this time is calculated simultaneously 100 benchmark of detection module can be completed with the coordinate position (X1, Y1, Z1) of the detection sectional plane center of circle A1 of inner diameter measurement probe 102 Detect position positioning, that is, detection module 100 detection sectional plane center of circle A1 coordinate position (X1, Y1, Z1), detection module 100 axis direction unit vectors are [m4, m5, m6].
5th step, the calculating of 001 outer diameter of tested pipeline and internal diameter: after the completion of Reference detection positions positioning, detection module 100 001 pipe end of tested pipeline is retracted, detection module 100 is rotationally advancing acquisition number according to the direction of unit vector [m4, m5, m6] According to.The outer diameter detection probe 101 of detection module 100 acquires data as (a1, a2, a3 ... .an), 102 acquisition of inner diameter measurement probe Data are b1, b2, b3 ... .bn), outer diameter detection probe 101 is a, inner diameter measurement probe 102 apart from detection sectional plane center of circle A1 distance It is b apart from detection sectional plane center of circle A1 distance;Outer diameter detection probe 101, which is subtracted, using data a acquires data (a1, a2, a3 ... .an), 001 outer diameter parameters of tested pipeline (Q1, Q2, Q3 ... Qn) is obtained;Number is acquired plus outer diameter detection probe 102 using data b According to (b1, b2, b3 ... .bn), 001 internal diameter parameter of tested pipeline (P1, P2, P3 ... Pn) is obtained.
6th step, 001 wall thickness of tested pipeline calculate: since 100 outer diameter detection probe 101 of detection module and inner diameter measurement are popped one's head in 102 on a sagittal plane, thus according to 001 outer diameter parameters of tested pipeline (Q1, Q2, Q3 ... .Qn), internal diameter (P1, P2, P3 ... .Pn), two groups of data subtract each other to obtain 001 wall thickness data of tested pipeline (D1, D2, D3 ... Dn), pass through calculated wall thickness number 001 wall thickness D of tested pipeline is then obtained according to arithmetic mean of instantaneous value, that is, is had
7th step, roughness calculates inside and outside tested pipeline 001: according to 001 outer diameter of tested pipeline (Q1, Q2, Q3 ... .Qn), Two groups of data of internal diameter (P1, P2, P3 ... .Pn) are calculated 001 outer diameter of tested pipeline (Q1, Q2, Q3 ... .Qn) data and are averaged The average value P of value Q, 001 internal diameter of measured tube deferent (P1, P2, P3 ... .Pn) data;Calculating 001 outer diameter of tested pipeline (Q1, Q2, Q3 ... .Qn) difference between data and outer diameter tube average value Q obtains data (Q1, Q2, Q3 ... Qn), calculate quilt The difference of 001 internal diameter of test tube road (P1, P2, P3 ... .Pn) between data and internal diameter of the pipeline average value P obtain data (P1, P2, P3 ... Pn);(Q1, Q2, Q3 ... Qn), (P1, P2, P3 ... Pn) two groups of data are sought respectively The arithmetic mean of instantaneous value of absolute value is 001 inside surface roughness Ra2 of 001 outer surface roughness Ra1 of tested pipeline and tested pipeline, Have
8th step, roundness calculation inside and outside tested pipeline 001: according to 001 outer diameter of tested pipeline (Q1, Q2, Q3 ... .Qn), quilt 001 internal diameter of test tube road (P1, P2, P3 ... .Pn), two groups of data;001 outer diameter average value Q of tested pipeline, tested pipeline is calculated 001 internal diameter average value P.Choose 001 outer diameter of tested pipeline (Q1, Q2, Q3 ... .Qn), internal diameter (P1, P2, P3 ... .Pn) data China and foreign countries Diameter maximum value Qx, minimum outer diameter value Qy, maximum inner diameter Px, minimum diameter Py.001 maximum outside diameter Qx of tested pipeline is subtracted outside minimum The difference of diameter Qy is the outer circularity O1 of tested pipeline 001 divided by the operation result of 001 outer diameter average value Q of tested pipeline;Measured tube It is quilt that 001 maximum inner diameter Px of road, which subtracts the difference of minimum diameter Py divided by the operation result of 001 internal diameter average value P of tested pipeline, Circularity O2, that is, have in test tube road 001
9th step, the angle calculation of pipeline end face 003 and 001 central axis of tested pipeline and pipeline end face center of circle A2's Establish: detection module 100 is rotationally advancing acquisition data according to the direction of the unit vector [m4, m5, m6] of Reference detection positions, when First outer diameter detection probe 101 enters tested pipeline 001, and when collecting first data, the distance inspection of record current location Survey the telescopic moving distance L1 of 100 module centers point A of module;When the last one outer diameter detection probe 101 enters tested pipeline 001, and when collecting first data, record telescopic moving distance of the current location apart from 100 module centers point A of detection module L2;Pipeline end face 003 is to have with 001 axis angulation of tested pipeline, Q is tested pipeline 001 outer diameter average value;Telescopic moving distance L at 003 center of circle A2 of pipeline end face is the distance of telescopic moving twice above-mentioned twice Average value has
Tenth step, tested pipeline 001 has left and right two pipeline end faces, the distance in two pipeline end face centers of circle in this implementation And angle calculation between two pipe end axis: as shown in fig. 6, in order to distinguish the center of circle of left and right two pipeline end faces, will more than 003 center of circle A2 of pipeline end face in step is divided into left side center of circle N, right side center of circle V, in order to distinguish left and right two detection modules Module centers point module centers point A in above step is divided into left module centers point M, right mould block central point W;
Tested pipeline 001 has two pipeline end faces in left and right, and the detection module 100 of 001 left end of tested pipeline is in Reference detection positions When, the deflection angle theta 1 of the deflection angle δ 1 of relative horizontal position, relative vertical position, 001 left side centre point N of tested pipeline away from It is Ln with a distance from detection telescopic moving from 100 module centers point M of detection module, that is, has the coordinate position of left module centers point M (Lx1, Ly1, Lz1), N point coordinate (Lx1+, Ly1+, Lz1+), MN axis Direction unit vector is
The detection module 100 of 001 right end of tested pipeline is in Reference detection positions, the deflection angle of opposite script horizontal position The deflection angle theta 2 of δ 2, opposite script vertical position, detection of the 001 left side center of circle V of tested pipeline apart from right mould block central point W are stretched Contracting moving distance is Lv, that is, has coordinate bit (Lx2, Ly2, Lz2), the V point coordinate (Lx2+ of right mould block central point W2, Ly2+, Lz2+), WV axis direction unit vector be
The coordinate relationship of two groups of vectors, the left and right end face of tested pipeline 001 circle are established after operational data in computer 333 Heart distance LMWThe distance between as M point, W point, if Lx=、Ly =、Lz=Then LMW .Show that tested pipeline 001 or so holds the angle between axis using unit vector method Φ then has
11st step, computer 333 to roughness Ra 1 outside the pipeline wall thickness D of the tested pipeline 001 being calculated, pipeline, The outer circularity O1 of roughness Ra 2, pipeline in pipeline, circularity O2, the angle of pipeline end face and central axis, pipeline in pipeline Front and back installation end end face circle center distance LMWAnd the technical parameters such as installation end axis angle Φ are recorded, and with the conjunction that inputs in advance Data are compared in lattice parameter, are judged whether in deviation range, if the matching requirements for meeting engineering site are shown simultaneously Testing result.

Claims (1)

1. a kind of detection system for measuring line size parameter characterized by comprising detection device, detection platform and meter Calculation machine, the detection device is at least 1, and is installed on detection platform, the collected data transmission of detection device To computer, the computer obtains line size parameter by analytical calculation, and shows result;
The detection device is made of detection module and three axle modules, and three axle modules are by X-axis ball screw, Y-axis ball screw, Z Shaft ball screw assembles, for adjusting detection module along the movement of X-axis, Y-axis, Z axis;
Detection module is by outer diameter detection probe, inner diameter measurement probe, annular retractable set, cylinder telescopic rod, horizontal rotary mechanism, perpendicular Direct rotary rotation mechanism, axial-rotation mechanism and fixed mechanism composition;The fixed mechanism is fixedly connected with Z axis ball screw, described It is rotated in the horizontal direction after horizontal rotary mechanism and the fixed mechanism are hinged, the vertical rotating mechanism and the horizontal rotation It is rotated in vertical direction after mechanism is hinged, the axial-rotation mechanism and the vertical rotating mechanism hingedly carry out axial rotation afterwards Turn;The annular retractable set is ring-type, and is fixedly connected with the axial-rotation mechanism, and the cylinder telescopic rod is located at the ring The center of shape telescopic is simultaneously fixedly connected with the axial-rotation mechanism;The end of the annular retractable set is fixedly connected with outer diameter inspection Probing head, the outer diameter detection probe at least two and be even number, and circumferencial direction is symmetrical;The cylinder telescopic rod End is fixedly connected with inner diameter measurement probe;The outer diameter detection probe and inner diameter measurement probe are located at a sagittal plane On, the outer diameter detection probe and inner diameter measurement probe use high-precision laser range-finding sensor, realize the detection adjusted the distance;
The outer diameter detection probe and inner diameter measurement probe and the horizontal rotary mechanism, vertical rotating mechanism, axial-rotation machine Structure rotates synchronously, and follows the X-axis ball screw, Y-axis ball screw, Z axis ball screw synchronizing moving of three axle module;
The annular retractable set and the cylinder telescopic rod axial stretching drive the outer diameter detection probe and inner diameter measurement to visit Head axial displacement;
The detection platform be equipped with position reference point O(0,0,0), the detection device is using the position reference point as zero point Positional relationship is established in coordinate system, the central point of the detection module is the center A of the vertical rotating mechanism, detection module The coordinate of center A is (Lx, Ly, Lz).
CN201811094493.4A 2018-09-19 2018-09-19 A kind of detection system measuring line size parameter Withdrawn CN109059823A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109211169A (en) * 2018-09-18 2019-01-15 江苏神通阀门股份有限公司 A kind of detection system and its detection method measuring line size parameter
CN109709157A (en) * 2019-01-24 2019-05-03 上海乔治费歇尔亚大塑料管件制品有限公司 Detection device for plastic pipe
CN110542400A (en) * 2019-09-10 2019-12-06 广东职业技术学院 long pipe inner wall roughness measuring device based on test metering technology and measuring method thereof
CN112781480A (en) * 2021-01-18 2021-05-11 广州海狮软件科技有限公司 Pipe diameter and thickness measuring instrument and measuring method thereof
CN113029011A (en) * 2021-03-19 2021-06-25 广州海狮软件科技有限公司 Calibration method and calibration device for measuring thickness of pipe wall of pipe

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109211169A (en) * 2018-09-18 2019-01-15 江苏神通阀门股份有限公司 A kind of detection system and its detection method measuring line size parameter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109211169A (en) * 2018-09-18 2019-01-15 江苏神通阀门股份有限公司 A kind of detection system and its detection method measuring line size parameter

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109211169A (en) * 2018-09-18 2019-01-15 江苏神通阀门股份有限公司 A kind of detection system and its detection method measuring line size parameter
WO2020057101A1 (en) * 2018-09-18 2020-03-26 江苏神通阀门股份有限公司 Detection system for measuring pipeline size parameters and detection method therefor
CN109709157A (en) * 2019-01-24 2019-05-03 上海乔治费歇尔亚大塑料管件制品有限公司 Detection device for plastic pipe
CN110542400A (en) * 2019-09-10 2019-12-06 广东职业技术学院 long pipe inner wall roughness measuring device based on test metering technology and measuring method thereof
CN110542400B (en) * 2019-09-10 2021-03-16 广东职业技术学院 Long pipe inner wall roughness measuring device based on test metering technology and measuring method thereof
CN112781480A (en) * 2021-01-18 2021-05-11 广州海狮软件科技有限公司 Pipe diameter and thickness measuring instrument and measuring method thereof
CN113029011A (en) * 2021-03-19 2021-06-25 广州海狮软件科技有限公司 Calibration method and calibration device for measuring thickness of pipe wall of pipe

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Application publication date: 20181221