CN114812414A - Composite measuring device for surface defects of inner diameter and inner wall of pipeline - Google Patents
Composite measuring device for surface defects of inner diameter and inner wall of pipeline Download PDFInfo
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- CN114812414A CN114812414A CN202210380677.7A CN202210380677A CN114812414A CN 114812414 A CN114812414 A CN 114812414A CN 202210380677 A CN202210380677 A CN 202210380677A CN 114812414 A CN114812414 A CN 114812414A
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- 239000002131 composite material Substances 0.000 title claims abstract description 47
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- 230000007246 mechanism Effects 0.000 claims abstract description 83
- 238000001514 detection method Methods 0.000 claims abstract description 36
- 238000003384 imaging method Methods 0.000 claims abstract description 27
- 238000013519 translation Methods 0.000 claims abstract description 18
- 210000000078 claw Anatomy 0.000 claims description 34
- 238000005259 measurement Methods 0.000 claims description 30
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 1
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- 230000000712 assembly Effects 0.000 description 11
- 238000000429 assembly Methods 0.000 description 11
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- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
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- 238000005096 rolling process Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
- G01B11/12—Measuring arrangements characterised by the use of optical techniques for measuring diameters internal diameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
- G01B11/2518—Projection by scanning of the object
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
- G01B5/0004—Supports
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores
- G01N2021/9548—Scanning the interior of a cylinder
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention provides a composite measuring device for the inner diameter and the surface defect of an inner wall of a pipeline, which comprises a composite sensing module, a rotating and translating movement mechanism, a supporting mechanism and a positioning device, wherein the composite sensing module is used for sensing the inner diameter and the surface defect of the inner wall of the pipeline; the supporting mechanism comprises a front supporting mechanism and a rear supporting mechanism; one end of the rotation and translation movement mechanism is connected with the front support mechanism, the other end of the rotation and translation movement mechanism is connected with the composite sensing module, the other end of the composite sensing module is connected with the rear support mechanism, and the rear support mechanism is connected with the positioning device; the rotation and translation motion mechanism drives the composite sensing module to rotate circumferentially and translate axially, and the composite sensing module comprises a projection and imaging module. The measuring device can measure the inner diameter of the pipeline and the surface defects of the inner wall of the pipeline simultaneously or respectively according to the detection requirements, can meet actual multiple detection requirements, improves the detection efficiency, and has the advantages of high precision, convenience in use, good stability and the like.
Description
Technical Field
The invention relates to the technical field of pipeline measurement, in particular to a composite measuring device for the inner diameter and the inner wall surface defects of a pipeline.
Background
Pipeline equipment such as oil and gas pipelines, chemical pipelines, gun barrels and the like can generate defects such as inner diameter expansion, inner wall cracks and abrasion under working conditions, the detection of the quality condition inside the pipelines is very necessary in the production, operation and maintenance process, and the measurement of the inner diameter change of the pipelines and the measurement of the surface defects of the inner walls of the pipelines are two important contents in the detection. In the prior art, most of detection instruments detect one aspect, or measure the inner diameter of a pipeline or measure the surface defects of the inner wall of the pipeline, if the inner diameter data of the pipeline and the imaging of the inner wall of the pipeline need to be acquired simultaneously, different instruments need to be used for multiple detections, the detection efficiency is low, the operation process is complicated, and the detection requirements of rapidness and accuracy cannot be met. In addition, the existing detecting instrument measuring head is mostly cantilever type, the vibration amplitude of the instrument is large when the instrument advances in the pipeline, the whole structure is unstable, and the detecting result is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a composite measuring device for the inner diameter and the surface defect of the inner wall of the pipeline, which can simultaneously or respectively carry out three-dimensional measurement of the inner diameter of the pipeline and surface defect detection of the inner wall of the pipeline, and can keep stable in the advancing process of the device.
In order to realize the technical scheme, the scheme adopted by the invention is as follows:
a composite measuring device for the defects of the inner diameter and the inner wall surface of a pipeline comprises a composite sensing module, a rotation and translation movement mechanism, a supporting mechanism and a positioning device;
the supporting mechanism comprises a front supporting mechanism and a rear supporting mechanism; one end of the rotation and translation movement mechanism is connected with the front support mechanism, the other end of the rotation and translation movement mechanism is connected with the composite sensing module, the other end of the composite sensing module is connected with the rear support mechanism, and the rear support mechanism is connected with the positioning device;
the rotation and translation motion mechanism drives the composite sensing module to rotate circumferentially and translate axially, and the composite sensing module comprises a projection and imaging module.
As a further improvement of the invention, the projection and imaging module comprises a projection module and an imaging module, the projection module is used for emitting measurement stripes according to detection requirements or serving as a light source to uniformly illuminate the inner wall, the imaging module is used for realizing three-dimensional measurement of the contour of the inner wall by matching the measurement stripes projected by the projection module and based on a structured light three-dimensional measurement principle, and realizing surface defect detection of the inner wall by imaging the inner wall of the pipeline.
As a further improvement of the present invention, the composite sensing module further includes a first mounting connection module and a second mounting connection module; the projection and imaging module is connected with the first installation connecting module and the second installation connecting module at two ends respectively, and the first installation connecting module and the second installation connecting module are connected with the rotation and translation motion mechanism and the rear support mechanism respectively.
As a further improvement of the invention, the rotating and translating movement mechanism comprises a rotating motor and a pushing rod, one end of the rotating motor is fixedly connected with the front support mechanism, and the output shaft of the other end of the rotating motor is connected with the mounting and connecting module; the push rod is arranged at the rear end of the rear supporting mechanism and penetrates through the positioning device to be connected with external power.
As a further improvement of the invention, the positioning device comprises a bracelet, a telescopic arm and a shell; the telescopic arm is L-shaped, one side of the telescopic arm is provided with a rack and is arranged in the shell, and the other side of the telescopic arm is provided with a positioning arc; the bracelet is hollow structure, and there is the gear structure at the middle part, and the radial flexible length of flexible arm is adjusted with the rack toothing of flexible arm to flexible arm, and the bracelet suit is on advancing the pole.
As a further improvement of the present invention, the front support mechanism includes a first connecting cylinder, a first spring, a first rack housing, a first connecting seat, a first support seat and a first support claw assembly; the first connecting cylinder is of a hollow structure, a rack sleeve and a first spring are mounted outside the first cylinder, a first supporting seat is mounted outside the first rack sleeve and the first spring, the same first supporting claw assemblies are circumferentially arranged on the first supporting seat, and the first supporting claw assemblies are hinged to the first supporting seat and are matched with the first spring to control the opening and closing angle.
As a further improvement of the present invention, a first nut is disposed at one end of the first connecting cylinder, and is used for axially fixing the first spring and the first rack; the other end of the first connecting cylinder is provided with a first connecting seat used for connecting a rotary and translational motion mechanism.
As a further improvement of the invention, the rear support mechanism comprises a second connecting cylinder, a second spring, a second rack sleeve, a second connecting seat, a second supporting seat and a second supporting claw component; the second connecting cylinder is of a hollow structure, a rack sleeve and a second spring are mounted outside the second cylinder, a second supporting seat is mounted outside the second rack sleeve and the second spring, the same second supporting claw assemblies are circumferentially arranged on the second supporting seat, and the second supporting claw assemblies are hinged to the second supporting seat and the rack sleeve and the second spring are matched to control the opening and closing angle.
As a further improvement of the present invention, one end of the second connecting cylinder is provided with a second nut for axially fixing the second spring and the second rack; and the other end of the second connecting cylinder is provided with a second connecting seat for connecting the composite sensing module.
As a further improvement of the invention, the first supporting claw assembly and the second supporting claw assembly respectively comprise claw bodies, bolts and rollers, one end of each claw body is hinged with the first supporting seat or the second supporting seat through a rolling shaft and meshed with the rack sleeve, and the other end of each claw body is Y-shaped and hinged with the roller through the bolts.
The invention has the beneficial effects that:
the invention relates to a composite measuring device for the surface defects of the inner diameter and the inner wall of a pipeline, which comprises a composite sensing module, a rotating and translating movement mechanism, a supporting mechanism and a positioning device, wherein the composite sensing module is arranged on the inner wall of the pipeline; the composite sensing module consists of a projection and imaging module and an installation connecting module, is respectively connected with the rotating motor and the rear supporting mechanism through a front installation platform and a rear installation platform, and is driven to rotate by the rotating motor, so that the composite measurement of the inner diameter of the pipeline and the surface defects of the inner wall is realized; the measuring device can measure the inner diameter of the pipeline and the surface defects of the inner wall of the pipeline simultaneously or respectively according to the detection requirements, can meet actual multiple detection requirements, improves the detection efficiency, and has the advantages of high precision, convenience in use, good stability and the like. The pipeline inner diameter and inner wall surface defect composite measuring device can measure the pipeline inner diameter and the pipeline inner wall surface defect simultaneously or respectively according to the detection requirement, can meet various detection requirements, improves the detection efficiency, and has the advantages of high precision, convenient use, good stability and the like.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. In the drawings:
fig. 1 is a front view of the present invention.
FIG. 2 is a schematic structural diagram of a composite measuring device for inner diameter and inner wall surface defects of a pipeline according to a preferred embodiment of the invention.
In the figure: 1. a first support base; 2. a first bolt; 3. a projection and imaging module; 4. a telescopic arm; 5. A first installation connection module; 6. a bearing; 7. a second support seat; 8. a bolt nail; 9. a claw body; 10. a housing; 11. a bracelet; 12. a push rod; 13. a second nut; 14. a second connecting cylinder; 15. a second spring; 16. a roller; 17. a second connecting seat; 18. a second bolt; 19. a second rack housing; 20. a second mounting connection module; 21. a first connecting seat; 22. a rotating electric machine; 23. a first rack housing; 24. a roller; 25. A first connecting cylinder; 26. a first nut; 27. a first spring.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-2, a composite measuring device for inner diameter and inner wall surface defects of a pipeline comprises a composite sensing module 300, a rotation and translation movement mechanism 200, a supporting mechanism and a positioning device 500;
the supporting mechanism comprises a front supporting mechanism 100 and a rear supporting mechanism 400; one end of the rotation and translation movement mechanism 200 is connected with the front support mechanism 100, the other end is connected with the composite sensing module 300, the other end of the composite sensing module 300 is connected with the rear support mechanism 400, and the rear support mechanism 400 is connected with the positioning device 500;
the rotation and translation movement mechanism 200 drives the composite sensing module 300 to rotate circumferentially and translate axially, and the composite sensing module 300 comprises a projection and imaging module 3.
The measuring device can measure the inner diameter of the pipeline and the surface defects of the inner wall of the pipeline simultaneously or respectively according to the detection requirements, can meet actual multiple detection requirements, improves the detection efficiency, and has the advantages of high precision, convenience in use, good stability and the like.
In order that those skilled in the art will better understand the invention and thus more clearly define the scope of the invention as claimed, it is described in detail below with respect to certain specific embodiments thereof. It should be noted that the following is only a few embodiments of the present invention, and the specific direct description of the related structures is only for the convenience of understanding the present invention, and the specific features do not of course directly limit the scope of the present invention. Such alterations and modifications as are made obvious by those skilled in the art and guided by the teachings herein are intended to be within the scope of the invention as claimed.
The following detailed description of embodiments of the invention is provided in connection with the accompanying drawings. The following examples or figures are illustrative of the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 and 2, the composite sensing module 300 is composed of a projection and imaging module 3 and mounting and connecting modules 5 and 20, and is connected with a rotating motor 22 and a rear supporting mechanism 400 through a front mounting table and a rear mounting table respectively, and is driven by the rotating motor 22 to rotate, so as to realize composite measurement of the inner diameter of the pipeline and the surface defects of the inner wall; the supporting mechanism comprises a front supporting mechanism 100 and a rear supporting mechanism 400, the front supporting mechanism 100 is fixedly connected with a rotating motor 22 through a front connecting seat 21, one end of the rear supporting mechanism 400 is connected with the composite sensing module 300 through a rear connecting seat 17, and the other end of the rear supporting mechanism is fixedly connected with a positioning device 500 through a rear nut 13.
Projection and imaging module 3 include projection module and imaging module, and projection module 3 is used for launching measurement stripe or evenly illuminates the inner wall as the light source according to the detection demand, and imaging module 3 realizes the three-dimensional measurement of inner wall profile through the measurement stripe that the cooperation projection module throws and based on the three-dimensional measurement principle of structured light, through realizing inner wall surface defect to the formation of image of pipeline inner wall.
The composite sensing module 300 comprises a projection and imaging module 3 and installation connecting modules 5 and 20, wherein the installation connecting modules are respectively connected with a rotating motor 22 and a rear supporting mechanism 400; the projection module 3 can launch according to the detection demand and measure the stripe or evenly illuminate the inner wall as the light source, and the three-dimensional measurement of inner wall profile is realized through the measurement stripe that the cooperation projection module throws and based on the three-dimensional measurement principle of structured light to the imaging module 3, realizes inner wall surface defect through imaging to the pipeline inner wall and detects. The two ends of the projection and imaging module 3 are respectively connected with the first installation connecting module 5 and the second installation connecting module 20, and the first installation connecting module 5 and the second installation connecting module 20 are respectively connected with the rotation and translation movement mechanism 200 and the rear support mechanism 400.
The supporting mechanism comprises a front supporting mechanism 100 and a rear supporting mechanism 400, the front supporting mechanism and the rear supporting mechanism are similar in structure and comprise screw caps 13 and 26, connecting cylinders 14 and 25, springs 15 and 27, rack sleeves 19 and 23, connecting seats 17 and 21, supporting seats 1, 7 and 3 supporting claw assemblies, the connecting cylinders 14 and 25 are of hollow structures, the rack sleeves 19 and 23 and the springs 15 and 27 are installed outside the cylinders, the supporting seats 1 and 7 are installed outside the rack sleeves 19 and 23 and the springs 15 and 27, 3 identical supporting claw assemblies are uniformly distributed on the supporting seats 1 and 7 in the circumferential direction and hinged to the supporting seats 1 and 7, the rack sleeves 19 and 23 are matched with the springs 15 and 27 to control the opening and closing angles of the supporting claw assemblies, and the springs 15 and 27 can buffer the supporting claw assemblies when the supporting claw assemblies roll axially; nuts 13 and 26 are fixedly connected to one ends of the connecting cylinders 14 and 25, and are used for axially fixing the springs 15 and 27 and the racks 19 and 23; connecting seats 17 and 21 are arranged at the other ends of the connecting cylinders 14 and 25, the front connecting seat 21 is fixedly connected with the rotating motor 22, and the rear connecting seat 17 is connected with the measuring head mounting and connecting module 5.
The specific structure is illustrated as follows:
the front support mechanism 100 comprises a first connecting cylinder 25, a first spring 27, a first rack sleeve 23, first connecting seats 17 and 21, a first support seat 1 and a first support claw component; the first connecting cylinder 25 is of a hollow structure, the rack sleeve 23 and the first spring 27 are mounted outside the first cylinder, the first supporting seat 1 is mounted outside the first rack sleeve 23 and the first spring 27, the same first supporting claw assemblies are circumferentially arranged on the first supporting seat 1, the first supporting claw assemblies are hinged to the first supporting seat 1, and the rack sleeve 23 and the first spring 27 are matched to control the opening and closing angle. A first nut 26 is arranged at one end of the first connecting cylinder 25 and is used for axially fixing the first spring 27 and the first rack 23; the other end of the first connecting cylinder 25 is provided with a first connecting seat 21 for connecting the rotation and translation movement mechanism 200.
The rear support mechanism 400 comprises a second connecting cylinder 14, a second spring 15, a second rack sleeve 19, a second connecting seat 17, a second supporting seat 7 and a second supporting claw assembly; the second connecting cylinder 14 is of a hollow structure, a rack sleeve 19 and a second spring 15 are mounted outside the second cylinder, a second supporting seat 7 is mounted outside the second rack sleeve 19 and the second spring 15, the same second supporting claw assembly is circumferentially arranged on the second supporting seat 7, and the second supporting claw assembly is hinged to the second supporting seat 7, and the rack sleeve 19 is matched with the second spring 15 to control the opening and closing angle.
One end of the second connecting cylinder 14 is provided with a second nut 13 for axially fixing a second spring 15 and a second rack 19; the other end of the second connecting cylinder 14 is provided with a second connecting seat 17 for connecting the composite sensing module 300.
The rotation and translation movement mechanism 200 comprises a rotation motor 22 and a push rod 12, one end of the rotation motor 22 is fixedly connected with the front support mechanism 100, and an output shaft is connected with the installation connection module 20 to drive the whole composite imaging module to rotate; the push rod 12 is mounted at the rear end of the rear support mechanism 400 and is connected with external power to realize the axial feed motion of the device.
The supporting claw assembly comprises a claw body 9, a bolt nail 8 and a roller 16, one end of the claw body 9 is hinged with the front and rear supporting seats 1 and 7 through a rolling shaft 24 and meshed with the rack sleeve, the other end of the claw body is Y-shaped, and the roller is hinged with the claw body through the bolt nail 8.
The positioning device 500 comprises a bracelet 11, a telescopic arm 4 and a shell 10; the telescopic arm is L-shaped, one side of the telescopic arm is provided with a rack and is arranged in the shell 19, and the other side of the telescopic arm is provided with a positioning arc; bracelet 11 is hollow structure, and there is the gear structure in the middle part, with the adjustable flexible arm 4 radial flexible length of the rack toothing of flexible arm 4, bracelet 4 suit is on propulsion pole 12.
The use method of the invention is as follows with the attached drawings:
before measurement, the device is fed into the pipeline from one end of a front nut, a bracelet on a positioning device 500 is rotated, the radial length of a telescopic arm is adjusted, so that a positioning arc is attached to the end face of the pipeline, the device is kept still, and zero calibration is carried out on the device; after the calibration is finished, setting a measurement item on a control computer, or measuring the inner diameter of the pipeline, or measuring the surface defect of the inner wall of the pipeline, or simultaneously; during measurement, the rotating motor drives the composite sensing module 300 to rotate in the pipeline, after the pipeline is scanned and photographed for a circle, the measuring device performs axial feeding under the action of external driving, and repeats circumferential rotating motion when reaching the next position, and the operation is repeated until the measurement is finished.
The invention is suitable for the composite measurement of the inner diameter of the pipeline equipment and the surface defects of the inner wall. In the production operation and maintenance, the three-dimensional measurement of the inner diameter of the pipeline and the surface defect detection of the inner wall of the pipeline can be carried out simultaneously or respectively according to the detection requirements. Pipeline equipment such as oil and gas pipelines, chemical pipelines, gun barrels and the like can generate defects such as inner diameter expansion, inner wall cracks and abrasion under working conditions, the detection of the quality condition inside the pipelines is very necessary in the production, operation and maintenance process, and the measurement of the inner diameter change of the pipelines and the measurement of the surface defects of the inner walls of the pipelines are two important contents in the detection. In the prior art, most of detection instruments only detect one aspect, if the inner diameter and the inner wall surface defects of a pipeline are detected simultaneously, different instruments are required to be used for multiple detections, the detection efficiency is low, the operation process is complex, and the rapid and accurate detection requirements cannot be met. The invention can simultaneously acquire the inner diameter data of the pipeline and the inner wall imaging of the pipeline, has simple operation and can greatly improve the detection efficiency. The invention provides a feasible idea for the development of the detection technology from low-efficiency detection of a single project to high-efficiency detection of multiple projects.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. The utility model provides a pipeline internal diameter and inner wall surface defect combined measurement device which characterized in that: comprises a composite sensing module (300), a rotation and translation motion mechanism (200), a supporting mechanism and a positioning device (500);
the support mechanism comprises a front support mechanism (100) and a rear support mechanism (400); one end of the rotation and translation movement mechanism (200) is connected with the front support mechanism (100), the other end of the rotation and translation movement mechanism is connected with the composite sensing module (300), the other end of the composite sensing module (300) is connected with the rear support mechanism (400), and the rear support mechanism (400) is connected with the positioning device (500);
the rotation and translation movement mechanism (200) drives the composite sensing module (300) to rotate circumferentially and translate axially, and the composite sensing module (300) comprises a projection and imaging module (3).
2. The device for compositely measuring the inner diameter and the inner wall surface defects of the pipeline according to claim 1, wherein: projection and imaging module (3) are including projection module and imaging module, and projection module (3) are used for launching the measurement stripe or evenly illuminate the inner wall as the light source according to the detection demand, and imaging module (3) realize the three-dimensional measurement of inner wall profile through the measurement stripe that cooperation projection module throwed and based on the three-dimensional measurement principle of structured light, realize inner wall surface defect through imaging to the pipeline inner wall.
3. The device for compositely measuring the inner diameter and the inner wall surface defects of the pipeline according to claim 1, wherein: the composite sensing module (300) further comprises a first mounting and connecting module (5) and a second mounting and connecting module (20); projection and imaging module (3) both ends are connected with first erection joint module (5), second erection joint module (20) respectively, and first erection joint module (5), second erection joint module (20) are connected respectively rotatory and translational motion mechanism (200) and back supporting mechanism (400).
4. The device for compositely measuring the inner diameter and the inner wall surface defects of the pipeline according to claim 1, wherein: the rotating and translating movement mechanism (200) comprises a rotating motor (22) and a pushing rod (12), one end of the rotating motor (22) is fixedly connected with the front support mechanism (100), and the output shaft of the other end of the rotating motor is connected with the mounting and connecting module (20); the push rod (12) is arranged at the rear end of the rear supporting mechanism (400) and penetrates through the positioning device (500) to be connected with external power.
5. The device for compositely measuring the inner diameter and the inner wall surface defects of the pipeline according to claim 4, wherein: the positioning device (500) comprises a bracelet (11), a telescopic arm (4) and a shell (10); the telescopic arm (4) is L-shaped, one side of the telescopic arm (4) is provided with a rack which is arranged in the shell (10), and the other side is provided with a positioning arc; bracelet (11) are hollow structure, and there is the gear structure in the middle part, and the rack toothing of flexible arm (4) and flexible arm (4) is adjusted flexible arm (4) and is radially flexible length, and bracelet (4) suit is on propulsion pole (12).
6. The device for compositely measuring the inner diameter and the inner wall surface defects of the pipeline according to claim 1, wherein: the front support mechanism (100) comprises a first connecting cylinder (25), a first spring (27), a first rack sleeve (23), a first connecting seat (21), a first support seat (1) and a first support claw assembly; first connecting cylinder (25) are hollow structure, and rack cover (23) and first spring (27) are installed outward to first section of thick bamboo, and first rack cover (23) and first spring (27) externally mounted have first supporting seat (1), and first supporting seat (1) circumference is provided with the same first supporting jaw subassembly, and first supporting jaw subassembly is articulated with first supporting seat (1) and rack cover (23) and first spring (27) cooperation control angle that opens and shuts.
7. The device for compositely measuring the inner diameter and the inner wall surface defects of the pipeline according to claim 6, wherein: one end of the first connecting cylinder (25) is provided with a first nut (26) which is used for axially fixing a first spring (27) and the first rack (23); the other end of the first connecting cylinder (25) is provided with a first connecting seat (21) for connecting a rotary and translational motion mechanism (200).
8. The device for compositely measuring the inner diameter and the inner wall surface defects of the pipeline according to claim 7, wherein: the rear supporting mechanism (400) comprises a second connecting cylinder (14), a second spring (15), a second rack sleeve (19), a second connecting seat (17), a second supporting seat (7) and a second supporting claw assembly; the second connecting cylinder (14) is of a hollow structure, a rack sleeve (19) and a second spring (15) are mounted outside the second connecting cylinder, a second supporting seat (7) is mounted outside the second rack sleeve (19) and the second spring (15), the same second supporting jaw assembly is circumferentially arranged on the second supporting seat (7), and the second supporting jaw assembly is hinged to the second supporting seat (7) and controls the opening and closing angle in a manner that the rack sleeve (19) is matched with the second spring (15).
9. The device for compositely measuring the inner diameter and the inner wall surface defects of the pipeline according to claim 8, wherein: one end of the second connecting cylinder (14) is provided with a second nut (13) which is used for axially fixing a second spring (15) and a second rack (19); the other end of the second connecting cylinder (14) is provided with a second connecting seat (17) for connecting the composite sensing module (300).
10. The device for compositely measuring the inner diameter and the inner wall surface defects of the pipeline according to claim 8, wherein: first support claw subassembly and second support claw subassembly all include the claw body (9), bolt nail (8) and gyro wheel (16), and claw body (9) one end is articulated through roller bearing (24) and with rack sleeve meshing with first supporting seat (1) or second supporting seat (7), and the other end is the Y style of calligraphy and articulates with bolt nail (8) has the gyro wheel.
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| CN202210380677.7A CN114812414B (en) | 2022-04-12 | 2022-04-12 | Composite measuring device for inner diameter and inner wall surface defects of pipeline |
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| CN202210380677.7A CN114812414B (en) | 2022-04-12 | 2022-04-12 | Composite measuring device for inner diameter and inner wall surface defects of pipeline |
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| CN114812414B (en) | 2024-01-12 |
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