CN111551134A - Method for detecting integral coaxiality during assembling of gasification furnace - Google Patents
Method for detecting integral coaxiality during assembling of gasification furnace Download PDFInfo
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- CN111551134A CN111551134A CN202010520109.3A CN202010520109A CN111551134A CN 111551134 A CN111551134 A CN 111551134A CN 202010520109 A CN202010520109 A CN 202010520109A CN 111551134 A CN111551134 A CN 111551134A
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- gasification furnace
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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
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
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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
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
Abstract
The invention discloses a method for detecting the whole coaxiality of a gasification furnace during assembly, and aims to solve the problems of long period and low measurement precision of the conventional method for detecting the whole coaxiality of the gasification furnace by using a micrometric collimating telescope. The detection method comprises the following steps: an optical axis of an industrial measuring system instrument is close to the integral central axis of the gasification furnace, reflection targets are arranged in the circumferential direction of an upper seal head, a lower seal head and a brick tray flange of the gasification furnace, the center of the front and rear sections of an upper cylinder and the center of the front and rear sections of a lower cylinder to measure the optical axis and establish a measuring coordinate system, then a straight line zx is fitted by using s0, f0, x0, t1, t2, t3 and t4 to be used as the integral central axis of the gasification furnace, a new coordinate system is established by using the straight line zx as an axis, the distance between each central point and the integral central axis is calculated in the new coordinate system, and the maximum distance is the integral. The invention solves the problem that the measurement straight line of the prior placing instrument must coincide with the actual axis and needs to be adjusted repeatedly, and improves the detection speed.
Description
Technical Field
The invention relates to a method for detecting coaxiality in the assembling process of a gasification furnace.
Background
When a large-container gasification furnace is produced and manufactured, the detection of the whole coaxiality of the gasification furnace is crucial, and the longer the length of the gasification furnace to be detected is, the more difficult the whole coaxiality is to control; the stricter the requirement on the detection precision is, the greater the detection difficulty is.
The prior detection method that the reference axis is established by using a micrometer collimating telescope and other points are detected generally has the problems of long detection period, single detection method and the like; especially, the measuring instrument must be arranged on a central line, which is difficult and long in use. With the shorter and shorter requirement on the product detection period and the higher and higher requirement on the manufacturing precision, the original optical detection method cannot meet the requirements on the product period and the measurement precision.
Disclosure of Invention
The invention aims to solve the problems of long period and low measurement precision of the conventional method for detecting the whole coaxiality of a gasification furnace by using a micro-collimating telescope, and provides a method for detecting the whole coaxiality when the gasification furnace is assembled.
The method for detecting the overall coaxiality during the assembly of the gasification furnace is realized according to the following steps:
firstly, an industrial measuring system instrument is placed and fixedly installed at one end of a gasification furnace, so that a measuring optical axis is close to the central axis of the whole gasification furnace;
secondly, respectively installing a central support in an upper seal head and a lower seal head of the gasification furnace, arranging a reflection target in the center of the central support, measuring and recording the target label of the reflection target of the upper seal head as s0, and measuring and recording the target label of the reflection target of the seal head as x 0;
uniformly sticking four reflection targets in the circumferential direction of a brick tray flange of the gasification furnace, and measuring and recording target labels f1, f2, f3 and f4 of the four reflection targets;
drawing cross points on the front and rear sections of the upper cylinder of the gasification furnace by using thin lines, ensuring the cross point in the upper cylinder to be the central point of the section, and measuring and recording target numbers of the cross points on the front and rear sections of the upper cylinder to be t4 and t3 respectively;
respectively pulling out cross points from the front and rear sections of the lower cylinder of the gasification furnace by using a thin line, ensuring the cross points in the lower cylinder to be the central point of the section, and measuring and recording target numbers of the cross points of the front and rear sections of the cylinder to be t2 and t1 respectively;
fifthly, an axis alignment measurement method is used, a measurement coordinate system is established by measuring an optical axis, target marks f1, f2, f3 and f4 are used for fitting a tray flange plane pm, a central point f0 coordinate value of the plane pm is established and recorded, then a straight line zx is fitted into the straight line zx by using s0, f0, x0 and recorded target numbers t1, t2, t3 and t4 to serve as the integral central axis of the gasification furnace, a new coordinate system is established by using the straight line zx as the axis, distances between s0, f0, x0, t1, t2, t3 and t4 and the integral central axis are calculated in the new coordinate system, and the maximum distance is the integral coaxiality of the gasification furnace.
According to the method for detecting the overall coaxiality of the gasifier, the industrial measuring system instrument is fixedly installed, so that the measuring optical axis is close to the overall central axis of the gasifier, the measuring error is reduced, the measuring precision is improved, the problems that the measuring straight line for placing the instrument in the past is required to be overlapped with the actual axis and needs to be adjusted repeatedly are solved, the measuring difficulty is reduced, and the detecting speed is improved. And the industrial measurement system is used for measurement and calculation, so that the detection precision of the coaxiality of the gasification furnace is greatly improved.
The invention is used for detecting the integral coaxiality measurement during the assembly of the gasification furnace.
Drawings
FIG. 1 is a schematic view of the positions of the reflective targets when assembling the gasifier;
fig. 2 is a schematic view of a center support.
Detailed Description
The first embodiment is as follows: the method for detecting the overall coaxiality in the process of assembling the gasification furnace in the embodiment is implemented according to the following steps:
firstly, an industrial measuring system instrument is placed and fixedly installed at one end of a gasification furnace, so that a measuring optical axis is close to the central axis of the whole gasification furnace;
secondly, respectively installing a central support in an upper seal head and a lower seal head of the gasification furnace, arranging a reflection target in the center of the central support, measuring and recording the target label of the reflection target of the upper seal head as s0, and measuring and recording the target label of the reflection target of the seal head as x 0;
uniformly sticking four reflection targets in the circumferential direction of a brick tray flange of the gasification furnace, and measuring and recording target labels f1, f2, f3 and f4 of the four reflection targets;
drawing cross points on the front and rear sections of the upper cylinder of the gasification furnace by using thin lines, ensuring the cross point in the upper cylinder to be the central point of the section, and measuring and recording target numbers of the cross points on the front and rear sections of the upper cylinder to be t4 and t3 respectively;
respectively pulling out cross points from the front and rear sections of the lower cylinder of the gasification furnace by using a thin line, ensuring the cross points in the lower cylinder to be the central point of the section, and measuring and recording target numbers of the cross points of the front and rear sections of the cylinder to be t2 and t1 respectively;
fifthly, an axis alignment measurement method is used, a measurement coordinate system is established by measuring an optical axis, target marks f1, f2, f3 and f4 are used for fitting a tray flange plane pm, a central point f0 coordinate value of the plane pm is established and recorded, then a straight line zx is fitted into the straight line zx by using s0, f0, x0 and recorded target numbers t1, t2, t3 and t4 to serve as the integral central axis of the gasification furnace, a new coordinate system is established by using the straight line zx as the axis, distances between s0, f0, x0, t1, t2, t3 and t4 and the integral central axis are calculated in the new coordinate system, and the maximum distance is the integral coaxiality of the gasification furnace.
According to the method for detecting the overall coaxiality of the gasifier, the measuring optical axis is close to the overall central axis of the gasifier without being overlapped, the coordinate points of all centers are established through the measuring optical axis, then the straight line zx (namely the overall central axis) is fitted, then the coordinate system is adjusted, the distance between each central point and the central axis is obtained through measurement, and the maximum distance is the overall coaxiality of the gasifier.
The second embodiment is as follows: the difference between the present embodiment and the first embodiment is that the industrial measurement system in the first step is an SMN industrial measurement system.
The third concrete implementation mode: the difference between the second embodiment and the first or second embodiment is that the reflective target is adhered to the center of the central support in the second step.
The fourth concrete implementation mode: the present embodiment is different from the first to third embodiments in that the thin line in the fourth step is a fishing line of 0.3mm to 0.5 mm.
The fifth concrete implementation mode: the difference between this embodiment and the first to the fourth embodiment is that in the fifth embodiment, an axis alignment measurement method is applied, and the measurement optical axis is taken as the z-axis to establish a measurement coordinate system.
Example (b): the method for detecting the overall coaxiality in the process of assembling the gasification furnace is implemented according to the following steps:
firstly, an SMN industrial measurement system instrument 1 is arranged and fixedly installed at one end of an upper end enclosure 2 of the gasification furnace, so that a measurement optical axis is close to the integral central axis of the gasification furnace;
secondly, respectively installing a central bracket in the upper seal head 2 and the lower seal head 6 of the gasification furnace, arranging a reflection target in the center of the central bracket, measuring and recording the target label of the reflection target of the upper seal head 2 as s0, and measuring and recording the target label of the reflection target of the seal head 6 as x 0;
uniformly sticking four reflection targets in the circumferential direction of a flange of a brick tray 4 of the gasification furnace, and measuring and recording target labels f1, f2, f3 and f4 of the four reflection targets;
drawing cross points on the front and rear sections of the upper cylinder 3 of the gasification furnace by using thin lines, ensuring the cross point in the upper cylinder 3 to be the central point of the section, and measuring and recording the target numbers of the cross points on the front and rear sections of the upper cylinder 3 to be t4 and t3 respectively;
respectively pulling out cross points from the front and rear sections of the lower barrel 5 of the gasification furnace by using thin wires, ensuring the cross point in the lower barrel 5 to be the central point of the section, and measuring and recording target numbers of the cross points of the front and rear sections of the barrel 5 as t2 and t 1;
fifthly, an axis alignment measurement method is used, a measurement coordinate system is established by taking a measurement optical axis as a z axis, target marks f1, f2, f3 and f4 are used for fitting a flange plane pm of the brick tray 4, a central point f0 coordinate value of the plane pm is established and recorded, then a straight line zx is fitted into the new coordinate system by taking s0, f0 and x0 and recorded target numbers t1, t2, t3 and t4 as an integral central axis of the gasification furnace, the new coordinate system is established by taking the straight line zx as an axis, distances between the s0, f0, x0, t1, t2, t3 and t4 and the integral central axis are calculated in the new coordinate system, and the maximum distance is the integral coaxiality of the gasification furnace.
After the overall coaxiality of the gasification furnace is detected, whether the maximum deviation meets the requirement or not is analyzed, the deviation direction and the adjustment size are analyzed, and the maximum deviation is detected again to be qualified after adjustment. The coordinate system is converted to the flange plane and the central axis of the fitting tray by a coordinate system conversion method, the positive and negative directions of the x-axis and the y-axis are analyzed by target numbers f 1-f 4, the deviation sizes and the deviation directions of s0, f0 and x0 and recorded target numbers t 1-t 4 are respectively analyzed, and the deviation sizes and the deviation directions are detected again after adjustment.
When the overall length of the gasification furnace is less than 50m, the accuracy of the method for detecting the overall coaxiality is less than 0.5mm when the gasification furnace is assembled, and after the overall coaxiality is detected, the deviation direction is analyzed, and the size is adjusted, the overall coaxiality of the gasification furnace can reach within +/-3 mm.
Claims (5)
1. The method for detecting the integral coaxiality during the assembly of the gasification furnace is characterized by being realized according to the following steps:
firstly, an industrial measuring system instrument is placed and fixedly installed at one end of a gasification furnace, so that a measuring optical axis is close to the central axis of the whole gasification furnace;
secondly, respectively installing a central support in an upper seal head and a lower seal head of the gasification furnace, arranging a reflection target in the center of the central support, measuring and recording the target label of the reflection target of the upper seal head as s0, and measuring and recording the target label of the reflection target of the seal head as x 0;
uniformly sticking four reflection targets in the circumferential direction of a brick tray flange of the gasification furnace, and measuring and recording target labels f1, f2, f3 and f4 of the four reflection targets;
drawing cross points on the front and rear sections of the upper cylinder of the gasification furnace by using thin lines, ensuring the cross point in the upper cylinder to be the central point of the section, and measuring and recording target numbers of the cross points on the front and rear sections of the upper cylinder to be t4 and t3 respectively;
respectively pulling out cross points from the front and rear sections of the lower cylinder of the gasification furnace by using a thin line, ensuring the cross points in the lower cylinder to be the central point of the section, and measuring and recording target numbers of the cross points of the front and rear sections of the cylinder to be t2 and t1 respectively;
fifthly, an axis alignment measurement method is used, a measurement coordinate system is established by measuring an optical axis, target marks f1, f2, f3 and f4 are used for fitting a tray flange plane pm, a central point f0 coordinate value of the plane pm is established and recorded, then a straight line zx is fitted into the straight line zx by using s0, f0, x0 and recorded target numbers t1, t2, t3 and t4 to serve as the integral central axis of the gasification furnace, a new coordinate system is established by using the straight line zx as the axis, distances between s0, f0, x0, t1, t2, t3 and t4 and the integral central axis are calculated in the new coordinate system, and the maximum distance is the integral coaxiality of the gasification furnace.
2. The method for detecting the overall coaxiality of the assembled gasification furnace according to claim 1, wherein the industrial measurement system in the first step is an SMN industrial measurement system.
3. The method for detecting the overall coaxiality of the assembled gasification furnace according to claim 1, wherein in the second step, the reflection target is attached to the center of the center support.
4. The method according to claim 1, wherein the thin line in the fourth step is a 0.3mm to 0.5mm fishing line.
5. The method according to claim 1, wherein the axis alignment measurement method is used in the fifth step to establish a measurement coordinate system with the measurement optical axis as the z-axis.
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Cited By (2)
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| CN114526674A (en) * | 2022-01-28 | 2022-05-24 | 北京平恒智能科技有限公司 | Method for measuring contact ratio in adhesive product |
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Application publication date: 20200818 |