CN111578868A - Detection method for perpendicularity of end face of sealing head during assembling of gasification furnace - Google Patents
Detection method for perpendicularity of end face of sealing head during assembling of gasification furnace Download PDFInfo
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- CN111578868A CN111578868A CN202010519412.1A CN202010519412A CN111578868A CN 111578868 A CN111578868 A CN 111578868A CN 202010519412 A CN202010519412 A CN 202010519412A CN 111578868 A CN111578868 A CN 111578868A
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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
- 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
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a detection method for perpendicularity of a seal end face during assembly of a gasification furnace, and aims to solve the problems that the detection period is long and the measurement precision is low in the existing method for detecting perpendicularity of the seal end face of the gasification furnace by using a micrometric collimating telescope. The detection method comprises the following steps: an industrial measurement system instrument is placed on the end face side of an end socket at one end of a gasification furnace, eight reflection targets d 1-d 8 are uniformly pasted on a flange of the end face of the end socket, four reflection targets f 1-f 4 are uniformly pasted on a flange of a brick tray of the gasification furnace along the circumferential direction, central reflection targets of front and rear sections of an upper cylinder body and a lower cylinder body are respectively established, a plane of the end face of the end socket is fitted by using target marks d 1-d 8, a straight line zx is fitted by using central points, and the included angle between the plane of the end face of the end socket and the straight line zx is calculated. The invention solves the problem that the measurement straight line of the original placing instrument must coincide with the actual axis and needs to be adjusted repeatedly, and solves the problem through an industrial measurement system, thereby reducing the measurement difficulty and improving the detection speed.
Description
Technical Field
The invention relates to a method for detecting the perpendicularity of an end face of a sealing head in the assembling process of a gasification furnace.
Background
When a large-sized container gasification furnace is produced and manufactured, the detection of the verticality of the end face of the sealing head of the gasification furnace is crucial, and the longer the length of the gasification furnace to be detected is, the more difficult the verticality of the end face of the sealing head is to be controlled; the stricter the requirement on the detection precision is, the greater the detection difficulty is. The detection of the perpendicularity of the end face of the gasification furnace is generally a method of establishing a reference axis by using a micrometer collimating telescope and then detecting other points, and 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 detection period and low measurement precision of the existing method for detecting the perpendicularity of the end face of the sealing head of the gasification furnace by using a micro-collimating telescope, and provides a method for detecting the perpendicularity of the end face of the sealing head during the assembly of the gasification furnace.
The detection method for the perpendicularity of the end face of the sealing head during the assembly of the gasification furnace is realized according to the following steps:
firstly, placing and fixedly mounting an industrial measuring system instrument on the end face side of an end socket (a to-be-measured end socket) at one end of a gasification furnace, and enabling a measuring optical axis to be close to the central axis of the gasification furnace;
uniformly sticking eight reflection targets on a sealing end face flange of the gasification furnace along the circumferential direction, and measuring and recording the labels of the eight reflection targets as d1, d2, d3, d4, d5, d6, d7 and d8 in sequence;
uniformly sticking four reflection targets on a gasifier brick tray flange along the circumferential direction, and measuring and recording the labels of the four reflection targets as f1, f2, f3 and f4 in sequence;
fourthly, mounting a central bracket on the other end sealing head of the gasification furnace, arranging a reflection target at the center of the central bracket, measuring the reflection target and recording the target label as x 0;
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;
sixthly, an axis alignment measurement method is used, a measurement coordinate system is established by using a measurement optical axis, a sealing head end face plane pm is fitted by using target marks d1, d2, d3, d4, d5, d6, d7 and d8, a central point d0 coordinate value of the fitting sealing head end face is established and recorded, a tile tray flange plane is fitted by using target marks f1, f2, f3 and f4, a central point f0 coordinate value of the fitting tile tray flange plane is established and recorded, then a straight line zx (serving as the integral central axis of the gasification furnace) is fitted by using d0, 0 and x0 and target marks t1, t2, t3 and t4, a new coordinate system is established by using the straight line zx as an axis, and the included angle between the fitting sealing head end face plane pm and the straight line zx is calculated, namely the perpendicularity of the sealing head end.
In the method for detecting the perpendicularity of the end face of the sealing head during assembling of the gasification furnace, an instrument is placed and fixed, and a measuring optical axis is close to the central axis of an actual container as much as possible, so that the measuring error is reduced, and the measuring precision is improved. The problem of in the past place the measuring straight line of instrument and actual axis must coincide, need the repeated adjustment is solved, reduced the measurement degree of difficulty, improved detection speed. The method is characterized in that measurement software of an industrial measurement system is used for calculating, an axis alignment measurement technology is used for establishing a measurement coordinate system, then an end surface plane and a central axis are fitted, and an included angle between the plane and the central axis, namely the perpendicularity of the end surface of the seal head, is calculated.
Drawings
FIG. 1 is a schematic diagram of the positions of the reflective targets when the gasifier is assembled according to the present invention;
fig. 2 is a schematic view of a center support.
Detailed Description
The first embodiment is as follows: the detection method for the perpendicularity of the end face of the sealing head during assembling of the gasification furnace in the embodiment is implemented according to the following steps:
firstly, placing and fixedly mounting an industrial measuring system instrument on the end face side of an end socket at one end of a gasification furnace, and enabling a measuring optical axis to be close to the central axis of the gasification furnace;
uniformly sticking eight reflection targets on a sealing end face flange of the gasification furnace along the circumferential direction, and measuring and recording the labels of the eight reflection targets as d1, d2, d3, d4, d5, d6, d7 and d8 in sequence;
uniformly sticking four reflection targets on a gasifier brick tray flange along the circumferential direction, and measuring and recording the labels of the four reflection targets as f1, f2, f3 and f4 in sequence;
fourthly, mounting a central bracket on the other end sealing head of the gasification furnace, arranging a reflection target at the center of the central bracket, measuring the reflection target and recording the target label as x 0;
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;
sixthly, an axis alignment measurement method is used, a measurement coordinate system is established through a measurement optical axis, a sealing head end face plane pm is fitted through target marks d1, d2, d3, d4, d5, d6, d7 and d8, a coordinate value of a center point d0 of the fitting sealing head end face is established and recorded, a brick tray flange plane is fitted through target marks f1, f2, f3 and f4, a coordinate value of a center point f0 of the fitting brick tray flange plane is established and recorded, then d0, f0, x0, target marks t1, t2, t3 and t4 are fitted into a straight line zx, a new coordinate system is established by taking the straight line zx as an axis, and an included angle between the fitting sealing head end face plane pm and the straight line zx is calculated, namely the perpendicularity of the sealing head end face.
According to the detection method for the perpendicularity of the end face of the sealing head during assembling of the gasification furnace, the measuring optical axis is close to the central axis of the whole gasification furnace, the superposition is not needed, the coordinate points of the centers are established through the measuring optical axis, then the straight line zx is fitted, then the coordinate system is adjusted, and the included angle between the plane pm of the end face of the fitting sealing head and the straight line zx is calculated, namely the perpendicularity of the end face of the sealing head.
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 present embodiment and the first or second embodiment is that in the fourth step, the reflective target is attached to the center of the central support.
The fourth concrete implementation mode: the present embodiment is different from the first to third embodiments in that the thin line in the fifth embodiment 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 sixth step, 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 detection method for the perpendicularity of the end face of the sealing head during the assembly of the gasification furnace is implemented according to the following steps:
firstly, an industrial measuring system instrument 1 is arranged and fixedly installed on the end face side of an upper end enclosure 2 of the gasification furnace, so that a measuring optical axis is close to the central axis of the gasification furnace;
uniformly sticking eight reflection targets on a flange on the end face of the upper end enclosure 2 of the gasification furnace along the circumferential direction, and measuring and recording the labels of the eight reflection targets as d1, d2, d3, d4, d5, d6, d7 and d8 in sequence;
uniformly sticking four reflection targets on a flange of the gasifier brick tray 4 along the circumferential direction, and measuring and recording the labels of the four reflection targets as f1, f2, f3 and f4 in sequence;
fourthly, mounting a central bracket on the lower end enclosure 6 of the gasification furnace, pasting a reflection target at the center of the central bracket, measuring the reflection target and recording the target label as x 0;
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;
sixthly, an axis alignment measurement method is used, a measurement coordinate system is established by taking a measurement optical axis as a z axis, a seal end face plane pm is fitted by using target marks d1, d2, d3, d4, d5, d6, d7 and d8, a coordinate value of a center point d0 of the fitting seal end face is established and recorded, a brick tray flange plane is fitted by using target marks f1, f2, f3 and f4, a coordinate value of a center point f0 of the fitting brick tray flange plane is established and recorded, then d0, f0 and x0, target marks t1, t2, t3 and t4 are fitted to form a straight line zx, a new coordinate system is established by taking the straight line zx as an axis, and an included angle between the fitting seal end face plane pm and the straight line zx is calculated, namely the seal end face included angle is obtained.
In this embodiment, an SMN industrial measurement system is used to perform measurement calculation, the perpendicularity of the end face of the seal head is measured in step six, whether the (maximum) included angle meets the requirement or not is analyzed, the direction of deviation of the end face of the seal head and the required adjustment size are analyzed, and the end face is re-detected to be qualified after adjustment. The operation process is as follows: and generating a coordinate system by using the central axis, observing target points d 1-d 8 of the fitting end surface plane pm, analyzing the deviation of the targets relative to a standard plane, taking the maximum deviation point as the direction needing to be adjusted, adjusting the deviation, and detecting again after adjustment.
When the overall length of the gasifier is 50m, the precision of the detection method for the perpendicularity of the end face of the sealing end in the gasifier assembly process is less than 0.05 degrees, and after the detection of the perpendicularity of the end face, the analysis of the deviation direction and the adjustment of the size, the perpendicularity of the end face of the gasifier can reach +/-0.25 degrees.
Claims (5)
1. The detection method for the perpendicularity of the end face of the sealing head during the assembly of the gasification furnace is characterized by being realized according to the following steps:
firstly, placing and fixedly mounting an industrial measuring system instrument on the end face side of an end socket at one end of a gasification furnace, and enabling a measuring optical axis to be close to the central axis of the gasification furnace;
uniformly sticking eight reflection targets on a sealing end face flange of the gasification furnace along the circumferential direction, and measuring and recording the labels of the eight reflection targets as d1, d2, d3, d4, d5, d6, d7 and d8 in sequence;
uniformly sticking four reflection targets on a gasifier brick tray flange along the circumferential direction, and measuring and recording the labels of the four reflection targets as f1, f2, f3 and f4 in sequence;
fourthly, mounting a central bracket on the other end sealing head of the gasification furnace, arranging a reflection target at the center of the central bracket, measuring the reflection target and recording the target label as x 0;
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;
sixthly, an axis alignment measurement method is used, a measurement coordinate system is established through a measurement optical axis, a sealing head end face plane pm is fitted through target marks d1, d2, d3, d4, d5, d6, d7 and d8, a coordinate value of a center point d0 of the fitting sealing head end face is established and recorded, a brick tray flange plane is fitted through target marks f1, f2, f3 and f4, a coordinate value of a center point f0 of the fitting brick tray flange plane is established and recorded, then d0, f0, x0, target marks t1, t2, t3 and t4 are fitted into a straight line zx, a new coordinate system is established by taking the straight line zx as an axis, and an included angle between the fitting sealing head end face plane pm and the straight line zx is calculated, namely the perpendicularity of the sealing head end face.
2. The method 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 perpendicularity of the end face of the sealing end when assembling the gasification furnace according to claim 1, wherein a reflection target is attached to the center of the center support in the fourth step.
4. The method according to claim 1, wherein the thin line in step five is a 0.3mm to 0.5mm fishing line.
5. The method according to claim 1, wherein an axis alignment measurement method is used in the sixth step to establish a measurement coordinate system with the measurement optical axis as the z-axis.
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| CN202010519412.1A CN111578868A (en) | 2020-06-09 | 2020-06-09 | Detection method for perpendicularity of end face of sealing head during assembling of gasification furnace |
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| CN202010519412.1A CN111578868A (en) | 2020-06-09 | 2020-06-09 | Detection method for perpendicularity of end face of sealing head during assembling of gasification furnace |
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Application publication date: 20200825 |