CN114739302A - Device and method for detecting ovality and diameter of large-diameter nodular cast iron pipe - Google Patents
Device and method for detecting ovality and diameter of large-diameter nodular cast iron pipe Download PDFInfo
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- CN114739302A CN114739302A CN202210287708.4A CN202210287708A CN114739302A CN 114739302 A CN114739302 A CN 114739302A CN 202210287708 A CN202210287708 A CN 202210287708A CN 114739302 A CN114739302 A CN 114739302A
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- 229910001141 Ductile iron Inorganic materials 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 50
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000004429 Calibre Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000012797 qualification Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 229910001018 Cast iron Inorganic materials 0.000 description 5
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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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
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a device and a method for detecting ovality and diameter of a large-diameter nodular cast iron pipe, and belongs to the technical field of diameter measurement of nodular cast iron pipes. The sensor assembly is assembled on a frame body of the fixed support and consists of a first sensor and a second sensor, and the first sensor and the second sensor are arranged in parallel at intervals; the ductile cast iron pipe is placed between the measurement ranges of both the first sensor and the second sensor. The invention can expand the detection range of the cast pipe, cover all the cast pipe models at present, adopt the sensor assembly to detect and compare with the caliper rule, measuring tool to detect the higher precision, realize the full detection, the data that the sensor assembly detects and gathers calculate diameter and ellipticity through the software, feedback the production in real time, produce the quality report form, the unqualified product is through the processing of the backstage data, find out the maximum and minimum excircle of the cast pipe in time, feedback the rounding station, raise the production efficiency.
Description
Technical Field
The invention relates to the technical field of measurement of the diameter of a nodular cast iron pipe, in particular to a device and a method for detecting the ovality and the diameter of a large-diameter nodular cast iron pipe.
Background
The industry of ductile iron pipes in China starts in the early 90 th century, develops rapidly under the strong support of water supply cooperation in cities and towns in China, and has been generally accepted by the water supply industry in safety and practicability after being practically used for nearly 40 years. As China is a country with water resource shortage, more than 600 water-deficient cities and more than 200 serious water-deficient cities, the water supply and saving industry is in the spotlight, and the nodular cast iron pipe has wide development prospect.
With the large-scale use of ductile iron pipes in water supply and gas delivery, the requirements on the overall dimension, manufacturing precision and product quality of a ball-milling cast pipe are higher, and for the existing cast pipe industry, the overall dimension detection mode of the cast pipe adopts the manual operation detection of a traditional gauge ruler and a traditional caliper ruler. The automatic detection of the LED light source or the laser light source can be carried out for a long time in a standardized way, the execution of the operation process is standard, and the phenomena of misjudgment and missing judgment caused by subjectivity, fatigue, carelessness and the like in manual operation can be effectively avoided.
At present, in the cast tube industry, most of the appearance quality detection of the tubes adopts selective examination and batch detection by using calipers and measuring tools, a permeability sensor can intelligently detect the tubes on line in real time to realize full examination, and a quality report is generated according to detection data and is fed back to production and finishing in time.
The existing transmission type sensor of the LED light source or the laser light source can detect the size data of a pipe in real time by irradiating the shadow part shielded by the pipe body, and calculate the pipe diameter and the ovality by a background controller. And comparing the calculated data with the standard data, feeding back, producing and importing the data into a database for storage.
The diameter range of the conventional transmission type LED sensor or laser sensor in the current market for detecting the circle is limited, and the LED sensor can only detect the circle to the maximum extent
The outer circle size of (2); the laser sensor can only detect the laser at most
The outer circle size of the steel tube cannot cover the cast tube products of the DN80-DN2200, and the detection task cannot be finished.
Disclosure of Invention
1. Technical problems to be solved by the invention
Aiming at the defects and shortcomings in the prior art, the invention provides a device and a method for detecting the ovality and the diameter of a large-diameter nodular cast iron pipe, the device and the method can enlarge the detection range of the cast iron pipe, cover all the models of the cast iron pipe at present, have higher detection precision by adopting a sensor assembly than a caliper and a measuring tool, realize full detection, calculate the diameter and the ovality by the data detected and collected by the sensor assembly through software, compare the diameter and the ovality with standard data, judge whether the cast iron pipe is qualified or not, feed back production in real time, generate a quality report, timely find out the maximum and the minimum outer circles of the cast iron pipe through the processing of background data of unqualified products, feed back a rounding station, and improve the production efficiency.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention discloses a device for detecting ovality and diameter of a large-diameter nodular cast iron pipe, which comprises a fixed support and a sensor assembly, wherein the sensor assembly is assembled on a frame body of the fixed support and consists of a first sensor and a second sensor, and the first sensor and the second sensor are arranged in parallel at intervals;
the device comprises a first sensor, a second sensor, a fixing support, a nodular cast iron pipe and a spherical graphite cast iron pipe, wherein the first sensor is composed of a first emitter and a first receiver, the second sensor is composed of a second emitter and a second receiver, the first emitter and the second emitter are respectively installed on the fixing support, a sliding block guide rail is arranged on one side of the fixing support at intervals, the first receiver and the second receiver are respectively installed on the sliding block guide rail, and the nodular cast iron pipe is placed between the measuring ranges of the first sensor and the second sensor.
Furthermore, the output end of the sensor assembly is connected with a background control panel, and the background control panel is used for collecting data and processing judgment data.
Furthermore, a rack guide rail is arranged at the joint of the fixed support and the sensor assembly, a servo motor is installed on a track of the rack guide rail, the other end of the servo motor is connected with the sensor assembly, and the servo motor drives the sensor assembly to translate along the rack guide rail.
Furthermore, the nodular cast iron pipe is driven by the pipeline conveying guide rail, the running direction of the pipeline conveying guide rail is perpendicular to the detection direction of the sensor assembly, and the bottom of the nodular cast iron pipe is provided with a rotary riding wheel which drives the nodular cast iron pipe to rotate in a fixed axis mode.
Further, the first sensor and the second sensor are both LED or laser transmission type sensors.
A detection method of a detection device for ovality and diameter of a heavy-calibre nodular cast iron pipe comprises the following steps:
the method comprises the following steps: the man-machine interface selects the model of the casting pipe through the control mechanism;
step two: centering when the nodular cast iron pipe reaches a station, transmitting the nodular cast iron pipe to a sensor assembly by a PLC signal to start collecting a plurality of groups of data, collecting two different outer dots of the nodular cast iron pipe, and analyzing the pipe diameter and the ovality;
step three: the terminal computer software judges the analyzed data;
and (4) qualification: the diameter of the nodular cast iron pipe is within the tolerance range, the ovality is qualified, and the nodular cast iron pipe can pass through the on-site signal nodular cast iron pipe;
unqualified: the diameter is unqualified: judging whether the diameter is too large or not, and back cutting when the diameter is too small;
step four: qualified diameter and unqualified ovality: feeding back to the site for rounding, and detecting after rounding is finished;
step five: the background terminal arranges data report forms according to different classification modes such as shift, model, batch number and the like through software and transmits the data report forms to a central database, and feedback production is convenient for management and tracing.
Further, the third step: the diameter detection data is the average of the collected data, and the diameter is fed back to the site in an alarm display mode when the diameter is unqualified.
Further, the fourth step: and if the ovality is unqualified, rounding is required, the motor is controlled to drive the rotary riding wheel to rotate out of the minimum diameter in real time through the maximum diameter and the minimum diameter of the detected data to round at a horizontal position, the whole circle is finished, the detection is continued, the qualified cast pipe passes, and the unqualified circle is continued.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
the invention can expand the detection range of the cast pipe, cover all the cast pipe models at present, the detection precision of the sensor assembly is higher than that of a caliper and a measuring tool, the full detection is realized, the diameter and the ovality of the data detected and collected by the sensor assembly are calculated by software and are compared with standard data, whether the product is qualified or not is judged, the production is fed back in real time, a quality report is generated, the unqualified product is processed by background data, the maximum and minimum outer circles of the cast pipe are found out in time, the full circle station is fed back, and the production efficiency is improved.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a schematic diagram of the measurement of the present invention;
FIG. 3 is a structural view of embodiment 2 of the present invention;
FIG. 4 is a graph of the diameter measurement profile of the present invention;
FIG. 5 is a graph of ovality detection in real time according to the present invention.
In the figure: 1. a fixed bracket; 11. a rack guide rail; 12. a servo motor; 2. a sensor assembly; 21. a first sensor; 211. a first transmitter; 212. a first receiver; 22. a second sensor; 221. a second transmitter; 222. a second receiver; 3. a slider guide rail; 4. and rotating the riding wheel.
Detailed Description
The invention is further described with reference to the following figures and examples:
example 1
As can be seen from fig. 1-2, the device for detecting ovality and diameter of a heavy-calibre nodular cast iron pipe in the embodiment comprises a fixed support 1 and a sensor assembly 2, wherein the sensor assembly 2 is assembled on a frame body of the fixed support 1, the sensor assembly 2 is composed of a first sensor 21 and a second sensor 22, and the first sensor 21 and the second sensor 22 are arranged in parallel and at intervals;
the first sensor 21 consists of a first emitter 211 and a first receiver 212, the second sensor 22 consists of a second emitter 221 and a second receiver 222, the first emitter 211 and the second emitter 221 are respectively installed on the fixing support 1, the sliding block guide rail 3 is arranged on one side of the fixing support 1 at intervals, the first receiver 212 and the second receiver 222 are respectively installed on the sliding block guide rail 3, and the nodular cast iron pipe is placed between the measuring ranges of the first sensor 21 and the second sensor 22.
The output end of the sensor assembly 2 is connected with a background control panel, and the background control panel collects data and processes judgment data.
A rack guide rail 11 is arranged at the joint of the fixed support 1 and the sensor assembly 2, a servo motor 12 is installed on a track of the rack guide rail 11, the other end of the servo motor 12 is connected with the sensor assembly 2, the servo motor 12 drives the sensor assembly 2 to translate along the rack guide rail 11, and the sensor assembly 2 can be manually adjusted in real time without being driven by the servo motor 12.
The nodular cast iron pipe is driven by the pipeline conveying guide rail, the running direction of the pipeline conveying guide rail is perpendicular to the detection direction of the sensor assembly 2, the bottom of the nodular cast iron pipe is provided with a rotary riding wheel 4, and the rotary riding wheel 4 drives the nodular cast iron pipe to rotate in a fixed shaft mode.
The first sensor 21 and the second sensor 22 are both LED or laser transmission type sensors, and the LED light source or laser light source transmission type sensors can detect the size data of the pipe in real time by irradiating the pipe body to shield the shadow part, and calculate the pipe diameter and the ovality through a background controller. And comparing the calculated data with the standard data, feeding back, producing and importing the data into a database for storage.
As shown in fig. 2: diameter D ═ C- (a + B); the application adopts a unique combination of installation modes to realize that the detection result is larger than the detection result
The outer circle size of the nodular cast iron pipe is completely covered with all models of the nodular cast iron pipes DN80-DN2200, and the detection task is finished through data acquisition, calculation and judgment of background software.
A detection method of a detection device for ovality and diameter of a heavy-calibre nodular cast iron pipe comprises the following steps:
the method comprises the following steps: the man-machine interface selects the model of the casting pipe through the control mechanism, and the standard size and the tolerance range of ovality of different models of the casting pipe need to be input into a field terminal;
step two: the method comprises the following steps that the nodular cast iron pipe arrives at a station to be centered, the nodular cast iron pipe starts to rotate and is transmitted to a sensor assembly 2 through a PLC signal to start to collect a plurality of groups of data, two different outer dots of the nodular cast iron pipe are collected, the pipe diameter and the ovality are analyzed, and the ovality is the maximum excircle-the minimum excircle;
step three: the terminal computer software judges the analyzed data;
and (4) qualification: the diameter of the nodular cast iron pipe is within the tolerance range, the ovality is qualified, and the nodular cast iron pipe can pass through the on-site signal nodular cast iron pipe;
unqualified: the diameter is unqualified: judging whether the diameter is too large or not, and back cutting when the diameter is too small;
the diameter detection data is the average number of the collected data, and the diameter is fed back to the site in an alarm display mode when the diameter is unqualified;
step four: qualified diameter and unqualified ovality: feeding back to the site for rounding, and detecting after rounding is finished;
as shown in fig. 3-4, the ovality is unqualified and requires rounding, the motor is controlled to drive the rotary riding wheel 4 to rotate out of the minimum diameter in real time to complete the rounding at the horizontal position according to the maximum diameter and the minimum diameter of the detected data, the rounding is finished and the detection is continued, the qualified cast pipe passes through, and the unqualified cast pipe continues to be rounded;
step five: the background terminal arranges data report forms according to different classification modes such as shift, model, batch number and the like through software and transmits the data report forms to a central database, and feedback production is convenient for management and tracing.
The invention adopts combined installation mode detection based on the transmission type sensor, and addsConventional maximum detection only
The scope of (3), the mode of combination can cover all specifications of cast pipe, detect and on-the-spot station PLC communication, real-time effectual feedback cast pipe's dimensional quality, the data of gathering pass through software processing, compare with standard data, judge in real time, the feedback, have variety and practicality, should detect through the different optimal position that the motor removed different pipe bores, it is more intelligent, the data that the cast pipe detected, upload in the database, be convenient for trace back cast pipe size and adopt intelligent sensor on-line measuring, compare conventional detection, the precision is more accurate, avoid artificial erroneous judgement and the phenomenon of missing to judge.
The invention can expand the detection range of the cast pipe, cover all the cast pipe models at present, the detection precision of the sensor assembly 2 is higher than that of a caliper and a measuring tool, the full detection is realized, the diameter and the ellipticity of the data detected and collected by the sensor assembly 2 are calculated by software and are compared with standard data, whether the product is qualified or not is judged, the production is fed back in real time, a quality report is generated, the unqualified product is processed by background data, the maximum and the minimum outer circles of the cast pipe are found out in time, the rounding station is fed back, and the production efficiency is improved.
Example 2
As can be seen from fig. 3, the device for detecting ovality and diameter of a large-diameter nodular cast iron pipe comprises a fixed support 1 and sensor assemblies 2, wherein the sensor assemblies 2 are arranged into two groups according to needs, four groups of LEDs or laser transmission sensors are horizontally arranged in parallel, the detection range can be expanded on the basis of embodiment 1, the types of the nodular cast iron pipe can be covered, and detection tasks can be completed through data acquisition, calculation and judgment of background software.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (8)
1. The utility model provides a heavy-calibre nodular cast-iron pipe ovality and diameter detection device, includes fixed bolster (1) and sensor assembly (2), its characterized in that: the sensor assembly (2) is assembled on the frame body of the fixed support (1), the sensor assembly (2) consists of a first sensor (21) and a second sensor (22), and the first sensor (21) and the second sensor (22) are arranged in parallel at intervals;
the device is characterized in that the first sensor (21) consists of a first emitter (211) and a first receiver (212), the second sensor (22) consists of a second emitter (221) and a second receiver (222), the first emitter (211) and the second emitter (221) are respectively installed on the fixed support (1), the sliding block guide rails (3) are arranged on one side of the fixed support (1) at intervals, the first receiver (212) and the second receiver (222) are respectively installed on the sliding block guide rails (3), and the nodular cast iron pipe is placed between the measuring ranges of the first sensor (21) and the second sensor (22).
2. The apparatus for detecting ovality and diameter of a large-caliber ductile cast iron pipe according to claim 1, wherein: the output end of the sensor assembly (2) is connected with a background control panel, and the background control panel collects data and processes judgment data.
3. The apparatus of claim 1, wherein the apparatus comprises: the sensor is characterized in that a rack guide rail (11) is arranged at the joint of the fixed support (1) and the sensor assembly (2), a servo motor (12) is installed on a track of the rack guide rail (11), the other end of the servo motor (12) is connected with the sensor assembly (2), and the servo motor (12) drives the sensor assembly (2) to move horizontally along the rack guide rail (11).
4. The apparatus for detecting ovality and diameter of a large-caliber ductile cast iron pipe according to claim 1, wherein: the nodular cast-in-place pipe is driven through the pipeline conveying guide rail, the running direction of the pipeline conveying guide rail is perpendicular to the detection direction of the sensor assembly (2), the bottom of the nodular cast-in-place pipe is provided with a rotary riding wheel (4), and the rotary riding wheel (4) drives the nodular cast-in-place pipe to rotate in a fixed axis mode.
5. The apparatus for detecting ovality and diameter of a large-caliber ductile cast iron pipe according to claim 1, wherein: the first sensor (21) and the second sensor (22) are both LED or laser transmission type sensors.
6. The detection method of the ovality and diameter detection device for the large-caliber nodular cast iron pipe according to claim 4, wherein the detection method comprises the following steps: the method comprises the following steps:
the method comprises the following steps: the man-machine interface selects the model of the casting pipe through the control mechanism;
step two: the nodular cast iron pipe arrives at a station for centering, the nodular cast iron pipe starts to rotate and is transmitted to a sensor assembly (2) through a PLC signal to start to collect a plurality of groups of data, two different outer dots of the nodular cast iron pipe are collected, and the pipe diameter and the ovality are analyzed;
step three: the terminal computer software judges the analyzed data;
and (4) qualification: the diameter of the nodular cast iron pipe is within the tolerance range, the ovality is qualified, and the nodular cast iron pipe can pass through the field signal nodular cast iron pipe;
unqualified: the diameter is unqualified: judging whether the diameter is too large or not, and back cutting when the diameter is too small;
step four: qualified diameter and unqualified ovality: feeding back to the site for rounding, and detecting after rounding is finished;
step five: the background terminal arranges data report forms according to different classification modes such as shift, model, batch number and the like through software and transmits the data report forms to a central database, and feedback production is convenient for management and tracing.
7. The detection method of the ovality and diameter detection device for the large-caliber nodular cast iron pipe according to claim 6, wherein the detection method comprises the following steps: the third step is that: the diameter detection data is the average number of the collected data, and the diameter is fed back to the site in an alarm display mode when the diameter is unqualified.
8. The detection method of the ovality and diameter detection device for the large-caliber nodular cast iron pipe according to claim 6, wherein the detection method comprises the following steps: the fourth step is that: the ovality is unqualified and needs to be rounded, the motor is controlled to drive the rotary riding wheel (4) to rotate out of the minimum diameter in real time to carry out rounding at the horizontal position through the maximum diameter and the minimum diameter of the detected data, the rounding is finished and the detection is continued, the qualified cast pipe passes through, and the unqualified rounding is continued.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210287708.4A CN114739302A (en) | 2022-03-22 | 2022-03-22 | Device and method for detecting ovality and diameter of large-diameter nodular cast iron pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210287708.4A CN114739302A (en) | 2022-03-22 | 2022-03-22 | Device and method for detecting ovality and diameter of large-diameter nodular cast iron pipe |
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| CN114739302A true CN114739302A (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210287708.4A Pending CN114739302A (en) | 2022-03-22 | 2022-03-22 | Device and method for detecting ovality and diameter of large-diameter nodular cast iron pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115193756A (en) * | 2022-09-16 | 2022-10-18 | 江苏新恒基特种装备股份有限公司 | Elbow ovality qualified detection method and detection system |
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| CN215524503U (en) * | 2021-05-11 | 2022-01-14 | 无锡威孚力达催化净化器有限责任公司 | Non-contact multifunctional detection device for post-treatment pipe fitting |
| CN215572723U (en) * | 2021-08-31 | 2022-01-18 | 中石化石油机械股份有限公司沙市钢管分公司 | Circumference measuring device for spiral welded pipe forming post |
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2022
- 2022-03-22 CN CN202210287708.4A patent/CN114739302A/en active Pending
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|---|---|---|---|---|
| US6091500A (en) * | 1998-12-16 | 2000-07-18 | Lucent Technologies Inc. | Method and apparatus for measuring overclad tubes |
| JP2010071778A (en) * | 2008-09-18 | 2010-04-02 | Sumitomo Metal Ind Ltd | Apparatus for measuring outer diameter of large diameter tube |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115193756A (en) * | 2022-09-16 | 2022-10-18 | 江苏新恒基特种装备股份有限公司 | Elbow ovality qualified detection method and detection system |
| CN115193756B (en) * | 2022-09-16 | 2022-11-22 | 江苏新恒基特种装备股份有限公司 | Elbow ovality qualified detection method and detection system |
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Application publication date: 20220712 |