CN113639659A - Comprehensive detector and measuring method for measuring geometric dimension of special pressure-bearing equipment - Google Patents
Comprehensive detector and measuring method for measuring geometric dimension of special pressure-bearing equipment Download PDFInfo
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- CN113639659A CN113639659A CN202110910989.XA CN202110910989A CN113639659A CN 113639659 A CN113639659 A CN 113639659A CN 202110910989 A CN202110910989 A CN 202110910989A CN 113639659 A CN113639659 A CN 113639659A
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- 238000000034 method Methods 0.000 title claims description 17
- 238000001514 detection method Methods 0.000 claims abstract description 92
- 238000003466 welding Methods 0.000 claims abstract description 43
- 239000002184 metal Substances 0.000 claims abstract description 41
- 238000012360 testing method Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 4
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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
- G01B11/2408—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring roundness
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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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/026—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring distance between sensor and 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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/46—Indirect determination of position data
- G01S17/48—Active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves
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Abstract
The invention provides a comprehensive detector for measuring the geometric dimension of a metal cylinder, which comprises: a detection cartridge; the laser ranging sensor is arranged at the bottom of the detection box, and the detection end of the laser ranging sensor faces the direction deviating from the detection box to detect; the two support arms are arranged on two sides of the detection box and used for supporting the support box, the two support arms are mutually symmetrical and extend towards the detection direction of the detection end, and the symmetrical planes of the two support arms penetrate through the center line of the detection end; the controller is arranged in the detection box and is electrically connected with the laser ranging sensor; the comprehensive detector can measure the edge angle of the edge angle formed by welding from the inner side and the outer side of the metal cylinder, and can measure the misalignment amount of the circumferential welding joints of the two metal cylinders, the misalignment amount of the longitudinal welding joint of the single metal cylinder and the roundness of the metal cylinder. The measuring instrument can realize the measurement of various parameters.
Description
Technical Field
The invention relates to the field of measurement of a cylindrical structure, in particular to a comprehensive detector and a measuring method for measuring the geometric dimension of a metal cylinder.
Background
The geometric dimension of the pressure-bearing shell of the pressure-bearing special equipment is related to the product quality, and the detection of the geometric dimension is an important link in the manufacturing process and is also a necessary item in the first periodic inspection. The geometric dimensions generally include: edges and corners, butt joint and misalignment of welding joints, shell roundness, end socket shape deviation and the like. At present, a manufacturing unit or an inspection institution usually adopts a template method for detecting geometric dimensions, so that the problems of low detection precision, more templates, troublesome detection, poor detection data repeatability and the like exist, and the situation that the work is done by experience and the data is directly filled in without detection exists in actual detection. How to fundamentally solve the problems is a very practical problem.
With the development and wide application of laser technology, the laser measurement technology is more and more mature, a convenient door is opened for the detection of the geometric dimension, and by the comprehensive detector for measuring the geometric dimension of the pressure-bearing special equipment, various parameters of the geometric dimension can be accurately and quickly measured, great convenience is brought to the detection work of the special equipment, and the working efficiency is greatly improved.
Disclosure of Invention
The invention mainly aims to provide a comprehensive detector for measuring the geometric dimension of a metal cylinder, which can measure different parameters of the metal cylinder according to different measuring methods.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: a comprehensive test instrument for measuring the geometric dimensions of a metal cylinder, comprising:
a detection cartridge;
the laser ranging sensor is arranged at the bottom of the detection box, and the detection end of the laser ranging sensor faces the direction deviating from the detection box to detect;
the two support arms are arranged on two sides of the detection box and used for supporting the support box, the two support arms are mutually symmetrical and extend towards the detection direction of the detection end, and the symmetrical planes of the two support arms penetrate through the center line of the detection end;
the controller is arranged in the detection box and is electrically connected with the laser ranging sensor;
the comprehensive detector can detect the edge angle of the outer surface of the metal cylinder, the edge angle of the inner surface of the metal cylinder, the misalignment amount of the assembly of the two metal cylinders and the roundness of the metal cylinder.
The invention also provides a method for measuring the edge angle of the circumferential edge angle formed by the welding joint from the outer side of the metal cylinder, which adopts the comprehensive detector of claim 1 to detect the edge angle of the edge angle formed by the welding joint of the longitudinal welding seam on the outer surface of the metal cylinder, and is characterized by comprising the following steps:
step 1: abutting two support arms against the outer surface of the metal cylinder and positioned on two sides of the longitudinal welding line, wherein the planes of the two support arms are perpendicular to the axis of the cylinder, and meanwhile, the detection end of the laser ranging sensor is opposite to the edge angle;
step 2: the controller controls the laser ranging sensor to measure the distance H between the detection end and the edge angle;
and step 3: the controller calculates the edge angle E by the following formula:
wherein E is the edge angle value, E is greater than 0, shows that the edge angle is outwards protruding, E is less than 0, surperficial edge angle is inwards concave, H is the distance between the sense terminal of laser rangefinder sensor and the edge angle, L is the sense terminal of laser rangefinder sensor and the one end of support arm with the metal cylinder contact at the distance of the sense direction of laser rangefinder sensor, D0Is the outer diameter of the cylinder body, and S is the distance between the free ends of the two support arms.
The invention also provides a method for measuring the edge angle of the circumferential edge angle formed by the welding joint from the inner side of the metal cylinder, the edge angle formed by the welding joint of the longitudinal weld joint is detected on the inner surface of the metal cylinder by adopting the comprehensive detector, and the method is characterized by comprising the following steps:
step 1: abutting two support arms against the inner surface of the cylinder body and positioned at two sides of the longitudinal welding line, wherein the plane where the two support arms are positioned is perpendicular to the axis of the cylinder body, and meanwhile, the detection end of the laser ranging sensor is opposite to the edge angle;
step 2: the controller controls the laser ranging sensor to measure the distance H between the detection end and the edge angle;
and step 3: the controller calculates the edge angle E by the following formula:
wherein E is the edge angle value, E is greater than 0, shows that the edge angle is to the indent, E is less than 0, surperficial edge angle is outwards protruding, H is the distance between the sense terminal of laser rangefinder sensor and the edge angle, L is the sense terminal of laser rangefinder sensor and the one end of support arm with the metal cylinder contact at the distance of the sense direction of laser rangefinder sensor, DiIs the inner diameter of the cylinder body, and S is the distance between the free ends of the two support arms.
The invention also provides a method for measuring the misalignment of two metal cylinders at the paired annular welding joints, and the comprehensive detector is adopted, and the method specifically comprises the following steps:
step 1: respectively abutting two support arms against the outer surfaces of the two cylinders and located on two sides of the annular welding joint, enabling the plane where the two support arms are located to penetrate through the axis of the cylinders, and aligning the detection end of the laser ranging sensor to one of two sides of the annular welding joint;
step 2: the controller controls the laser ranging sensor to measure the distance H between the detection end and one side of the detection end1；
And step 3: moving the multifunctional detector along the axial direction of the cylinder body, and aligning the detection end of the laser ranging sensor to the other side of the two sides of the annular welding joint;
and 4, step 4: the controller controls the laser ranging sensor to measure the distance between the detection end and the other side of the detection endFrom H2；
And 5: the misalignment amount b is obtained by the following formula:
b＝|H1-H2|。
the invention also provides a method for measuring the alignment misalignment of the longitudinal welding joint of the cylinder, and the comprehensive detector is adopted, and specifically comprises the following steps:
step 1: respectively abutting two support arms against the outer surface of the barrel and positioned on two sides of the longitudinal welding joint, wherein the planes of the two support arms are perpendicular to the axis of the barrel, and aligning the detection end of the laser ranging sensor to the position of one of two sides of the edge of the longitudinal welding joint;
step 2: the controller controls the laser ranging sensor to measure the distance H between the detection end and the edge surface of one side of the longitudinal welding joint1；
And step 3: moving the comprehensive detector along the circumferential direction of the cylinder, and aligning the detection end of the laser ranging sensor to the other side edge of the longitudinal welding joint;
and 4, step 4: the controller controls the laser ranging sensor to measure the distance H between the detection end and the edge surface of the other side of the longitudinal welding joint2；
And 5: the misalignment amount b is obtained by the following formula:
b＝|H1-H2|。
the invention also provides a roundness measuring method of the cylinder, which adopts the comprehensive detector to measure the protrusion amount (indent) of the outer surface of the cylinder so as to judge the roundness and specifically comprises the following steps:
step 1: respectively abutting two support arms against the outer surface of the cylinder body, wherein the plane of the two support arms is perpendicular to the axis of the cylinder body, and the detection end of the laser ranging sensor is opposite to the cylinder body;
step 2: the controller controls the laser ranging sensor to measure the distance H between the detection end and the barrel;
and step 3: the controller calculates the cylinder roundness e of the detection part of the cylinder by the following formula:
wherein e is the roundness of the cylinder at the detection part, H is the distance between the detection end of the laser ranging sensor and the inner surface of the cylinder, L is the distance between the detection end of the laser ranging sensor and the end of the support arm contacting with the cylinder in the detection direction of the laser ranging sensor, and D0Is the outer diameter of the cylinder body, and S is the distance between the free ends of the two support arms;
and 4, step 4: and judging the roundness of the cylinder according to whether e is 0, wherein when the roundness e of the cylinder is a positive value, the detected part is inwards concave, otherwise, the detected part is outwards convex.
Compared with the prior art, the invention has the following beneficial effects:
the comprehensive detector can realize the measurement of different parameters, and has simple structure and multiple functions.
Drawings
Fig. 1 and 2 are measurement schematic diagrams of a second embodiment of the present invention;
FIGS. 3 and 4 are measurement schematics of a third embodiment of the present invention;
FIGS. 5 and 6 are schematic diagrams of misalignment measurement at the circumferential weld joint of four pairs of two cylinder pairs according to the embodiment of the present invention;
FIGS. 7 and 8 are schematic diagrams illustrating the measurement of misalignment on both sides of the longitudinal butt joint of a single cylinder according to a fourth embodiment of the present invention;
fig. 9 and 10 are measurement schematic diagrams of a fifth embodiment of the present invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
Example one
As shown in fig. 1 to 7, a comprehensive detector for measuring the geometric dimension of a metal cylinder, including detecting box 1, set up in the both sides that detect box 1 and be used for supporting two arms 2 on barrel 100 surface, set up the laser range sensor 3 in the bottom that detects box 1, two arm 2 parallel arrangement and the plane perpendicular to that two arms 2 are located the extending direction of edges and corners 101, laser range sensor 3 detects towards deviating from the extending direction that detects box 1 and be on a parallel with two arms 2, two arm 2 mutual symmetry and symmetry plane pass the central line of laser range sensor 3, the free end of two arms 2 is located the same one side that detects box 1 with the sense terminal of laser range sensor 3. Be provided with the controller in detecting box 1, the controller with laser rangefinder sensor 3 electricity is connected, and the controller can acquire laser rangefinder sensor 3's detection end through laser rangefinder sensor 3 to the distance H of edges and corners 101. The detection box 1 is also internally provided with a storage battery which is electrically connected with the controller. The detection box 1 can also be provided with corresponding operation keys, and the detection of the laser ranging sensor 3 can be controlled through the operation keys. The controller is of the type AT89C51, although other types or models of controllers are possible. The laser distance measuring sensor 3 is of a type KLH-01T-20hz, and can be a controller of other types or models.
Example two
As shown in fig. 1 to 2, this embodiment uses the comprehensive measuring instrument of the first embodiment to externally measure the edge angle E of the edge angle formed at the longitudinal weld of the metal cylinder.
When using the detector, place two support arms 2 respectively the both sides of edges and corners 101 and keep away from the one end that detects box 1 and lean on the surface that leans on at barrel 100, laser rangefinder sensor 3 is just to edges and corners 101, makes controller control laser rangefinder sensor 3 detect the distance H between the sense terminal of laser rangefinder sensor 3 and edges and corners 101 through the operation button to adopt the following formula to acquire the edges and corners angle of edges and corners 101:
wherein E is the edge angle value of the edge angle, and H is laserThe distance between the detection end of the distance measuring sensor 3 and the edge 101, L is the distance between the laser distance measuring sensor 3 and the end of the support arm 2 contacting the cylinder 100 in the detection direction of the laser distance measuring sensor 3, and D0Is the outer diameter of the cylinder 100, and S is the distance between the ends of the two arms 2 contacting the cylinder 100. Wherein, L, D0The value of S can be measured in advance by other measuring means.
The detection box 1 can be further provided with a display screen electrically connected with the controller and used for displaying a measurement result, wherein the measurement result at least comprises an edge angle E of an edge angle. When the angle E is a positive value, the angle is indicated to be protruded outwards from the outer surface of the metal cylinder, and when the angle E is a negative value, the angle is indicated to be recessed inwards from the outer surface of the metal cylinder.
EXAMPLE III
As shown in fig. 3 to 4, the comprehensive detector in the first embodiment is used for measuring the edge angle formed at the longitudinal weld of the inner surface of the metal cylinder.
When using the detector, place two support arms 2 respectively the both sides of edges and corners 101 and keep away from the one end that detects box 1 and lean on the internal surface that leans on at barrel 100, laser rangefinder sensor 3 is just to edges and corners 101, makes controller control laser rangefinder sensor 3 detect the distance H between the sense terminal of laser rangefinder sensor 3 and edges and corners 101 through the operation button to adopt the following formula to acquire the edges and corners angle of edges and corners 101:
wherein E is the angular value of the edge angle, H is the distance between the detection end of the laser ranging sensor 3 and the edge angle 101, L is the distance between the laser ranging sensor 3 and the end of the support arm 2 contacting the cylinder 100 in the detection direction of the laser ranging sensor 3, DiThe diameter of the cylinder 100, and S is the distance between the ends of the two arms 2 contacting the cylinder 100. Wherein, L, DiThe value of S can be measured in advance by other measuring means.
When E is a positive value, the edge angle is concave from the inner surface of the metal cylinder, and when E is a negative value, the edge angle is convex from the inner surface of the metal cylinder.
Example four
As shown in fig. 5 and 6, the multi-function combination measuring apparatus of the first embodiment is used to measure the misalignment of the two cylinders 100 and 200 due to the assembling deviation when the ends are connected.
During measurement, the two support arms 2 are respectively supported on the edges of the two cylinders 100 and 200, the plane where the two support arms 2 are located passes through the axes of the two cylinders 100 and 200, the laser ranging sensor 3 is aligned to one of the cylinders 100, and the distance H between the laser ranging sensor 3 and the cylinder 100 is obtained1Then, the measuring instrument is moved to align the laser ranging sensor 3 with another cylinder 200, and the distance H between the laser ranging sensor 3 and the cylinder 200 is obtained2，H1And H2The difference value of (a) is the misalignment amount b.
Similarly, when the barrel is produced, the two ends of the plate are butted, and the misalignment can be generated, and in the same way, as shown in fig. 7-8, the two support arms 2 are respectively supported at the two side edges of the butted position, and the distances between the distance measuring sensor 3 and the two sides are respectively measured, so that the misalignment can be obtained.
EXAMPLE five
As shown in fig. 9 to 10, the roundness e of the cylinder 100 is measured according to the first embodiment.
During measurement, the two arms 2 are placed on the cylinder 100, the plane of the cylinder 100 is perpendicular to the axis of the cylinder 100, the laser distance measuring sensor 3 is over against the cylinder 100, the controller controls the laser distance measuring sensor 3 to detect the distance H between the detection end of the laser distance measuring sensor 3 and the surface of the cylinder 100 by operating the keys, and the roundness of the detection part is calculated by adopting the following formula:
wherein e is the roundness, H is the distance between the detection end of the laser ranging sensor 3 and the cylinder 100 at the corresponding position, and L is the distance between the laser ranging sensor 3 and the cylinder 100The distance D of the end of the arm 2 in contact with the cylinder 100 in the detection direction of the laser distance measuring sensor 30Is the outer diameter of the cylinder 100, and S is the distance between the ends of the two arms 2 contacting the cylinder 100. Wherein, L, D0The value of S can be measured in advance by other measuring means. When e is 0, it indicates that the surface of the cylinder 100 is round, when e is positive, it indicates that the detection portion is concave, and when e is negative, it indicates that the detection portion is convex.
When the roundness is measured, the detection point is required to avoid a welding joint or other protruding parts.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A comprehensive test instrument for measuring the geometric dimensions of a metal cylinder, comprising:
a detection cartridge;
the laser ranging sensor is arranged at the bottom of the detection box, and the detection end of the laser ranging sensor faces the direction deviating from the detection box to detect;
the two support arms are arranged on two sides of the detection box and used for supporting the support box, the two support arms are mutually symmetrical and extend towards the detection direction of the detection end, and the symmetrical planes of the two support arms penetrate through the center line of the detection end;
the controller is arranged in the detection box and is electrically connected with the laser ranging sensor;
the comprehensive detector can measure the edge angle of an edge angle formed by welding from the inner side and the outer side of the metal cylinder, and can measure the misalignment amount of the annular welding joint, the misalignment amount of the longitudinal welding joint of a single metal cylinder and the roundness of the metal cylinder, which are butted by two metal cylinders.
2. A method for measuring the edge angle of the circumferential edge angle formed by a welding joint from the outer side of a metal cylinder, which adopts the comprehensive detector of claim 1 to detect the edge angle of the edge angle formed by the welding joint of a longitudinal welding seam on the outer surface of the metal cylinder, and is characterized by comprising the following steps:
step 1: abutting two support arms against the outer surface of the metal cylinder and positioned on two sides of the longitudinal welding line, wherein the planes of the two support arms are perpendicular to the axis of the cylinder, and meanwhile, the detection end of the laser ranging sensor is opposite to the edge angle;
step 2: the controller controls the laser ranging sensor to measure the distance H between the detection end and the edge angle;
and step 3: the controller calculates the edge angle E by the following formula:
wherein E is the edge angle value, E is greater than 0, shows that the edge angle is outwards protruding, E is less than 0, surperficial edge angle is inwards concave, H is the distance between the sense terminal of laser rangefinder sensor and the edge angle, L is the sense terminal of laser rangefinder sensor and the one end of support arm with the metal cylinder contact at the distance of the sense direction of laser rangefinder sensor, D0Is the outer diameter of the cylinder body, and S is the distance between the free ends of the two support arms.
3. A method for measuring the edge angle of the circumferential edge angle formed by the welding joint from the inner side of a metal cylinder, which adopts the comprehensive detector of claim 1 to detect the edge angle of the edge angle formed by the welding joint of the longitudinal welding seam on the inner surface of the metal cylinder, and is characterized by comprising the following steps:
step 1: abutting two support arms against the inner surface of the cylinder body and positioned at two sides of the longitudinal welding line, wherein the plane where the two support arms are positioned is perpendicular to the axis of the cylinder body, and meanwhile, the detection end of the laser ranging sensor is opposite to the edge angle;
step 2: the controller controls the laser ranging sensor to measure the distance H between the detection end and the edge angle;
and step 3: the controller calculates the edge angle E by the following formula:
wherein E is the edge angle value, E is greater than 0, shows that the edge angle is to the indent, E is less than 0, surperficial edge angle is outwards protruding, H is the distance between the sense terminal of laser rangefinder sensor and the edge angle, L is the sense terminal of laser rangefinder sensor and the one end of support arm with the metal cylinder contact at the distance of the sense direction of laser rangefinder sensor, DiIs the inner diameter of the cylinder body, and S is the distance between the free ends of the two support arms.
4. A method for measuring the misalignment of two metal cylinders at the circumferential welding joint of the end parts adopts the comprehensive detector of claim 1, and specifically comprises the following steps:
step 1: respectively abutting two support arms against the outer surfaces of the two cylinders and located on two sides of the annular welding joint, enabling the plane where the two support arms are located to penetrate through the axis of the cylinders, and aligning the detection end of the laser ranging sensor to one of two sides of the annular welding joint;
step 2: the controller controls the laser ranging sensor to measure the distance H between the detection end and one side of the detection end1；
And step 3: moving the multifunctional detector along the axial direction of the cylinder body, and aligning the detection end of the laser ranging sensor to the other side of the two sides of the annular welding joint;
and 4, step 4: the controller controls the laser ranging sensor to measure the distance H between the detection end and the other side2；
And 5: the misalignment amount b is obtained by the following formula:
b＝|H1-H2|。
5. a method for measuring the alignment misalignment of a longitudinal welding joint of a cylinder by using the comprehensive detector of claim 1 specifically comprises the following steps:
step 1: respectively abutting two support arms against the outer surface of the barrel and located at two side edges of the longitudinal welding joint, wherein the plane where the two support arms are located is perpendicular to the axis of the barrel, and aligning the detection end of the laser ranging sensor to the position of one side of the two side edges of the longitudinal welding joint;
step 2: the controller controls the laser ranging sensor to measure the distance H1 between the detection end and the edge surface of one side of the longitudinal welding joint;
and step 3: moving the comprehensive detector along the circumferential direction of the cylinder, and aligning the detection end of the laser ranging sensor to the other side edge of the longitudinal welding joint;
and 4, step 4: the controller controls the laser ranging sensor to measure the distance H2 between the detection end and the edge surface on the other side of the longitudinal welding joint;
and 5: the misalignment amount b is obtained by the following formula:
b＝|H1-H2|。
6. a roundness measuring method of a cylinder body adopts the comprehensive detector of claim 1 to measure the protrusion amount or the inner concave amount of the outer surface of the cylinder body so as to judge the roundness, and specifically comprises the following steps:
step 1: respectively abutting two support arms against the outer surface of the cylinder body, wherein the plane of the two support arms is perpendicular to the axis of the cylinder body, and the detection end of the laser ranging sensor is opposite to the cylinder body;
step 2: the controller controls the laser ranging sensor to measure the distance H between the detection end and the barrel;
and step 3: the controller calculates the cylinder roundness e of the detection part of the cylinder by the following formula:
wherein e is the roundness of the cylinder at the detection part, H is the distance between the detection end of the laser ranging sensor and the inner surface of the cylinder, L is the distance between the detection end of the laser ranging sensor and the end of the support arm contacting with the cylinder in the detection direction of the laser ranging sensor, and D0Is the outer diameter of the cylinder body, and S is the distance between the free ends of the two support arms;
and 4, step 4: and judging the roundness of the cylinder according to whether e is 0, wherein when the roundness e of the cylinder is a positive value, the detected part is inwards concave, otherwise, the detected part is outwards convex.
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| CN115338552A (en) * | 2022-10-18 | 2022-11-15 | 中建安装集团有限公司 | System and method for controlling edge angle of cylinder of soil covering tank |
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| CN212721318U (en) * | 2020-09-16 | 2021-03-16 | 兖矿济宁化工装备有限公司 | Pressure vessel edge angle and misalignment measuring device |
| CN215932146U (en) * | 2021-08-10 | 2022-03-01 | 广东省特种设备检测研究院惠州检测院 | Comprehensive detector for measuring geometric dimension of pressure-bearing equipment |
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