CN109238249B - High-precision detection method of continuous annealing furnace - Google Patents
High-precision detection method of continuous annealing furnace Download PDFInfo
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- CN109238249B CN109238249B CN201811010792.5A CN201811010792A CN109238249B CN 109238249 B CN109238249 B CN 109238249B CN 201811010792 A CN201811010792 A CN 201811010792A CN 109238249 B CN109238249 B CN 109238249B
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Abstract
The invention relates to the field of construction of engineering equipment, in particular to a high-precision detection method of a continuous annealing furnace; the method is characterized in that: the method comprises the following steps of 1, setting a measurement detection reference; step 2, arranging a detection mark on the furnace bottom chamber; step 3, measuring the middle furnace body and the furnace top chamber; and 4, comprehensively finishing the steps 2 and 3 when each layer of structure is provided with a detection line. The operation method can effectively solve the problem of the method for installing and positioning the continuous annealing furnace by adopting a new construction process, saves the construction cost, reduces the resources, accelerates the construction progress, and has the characteristics of strong universality, flexible construction and suitability for construction of various similar projects.
Description
Technical Field
The invention relates to the field of construction of engineering equipment, in particular to a high-precision detection method of a continuous annealing furnace.
Background
Furnace body equipment basically comprises bulk supplies, a plurality of roller ways, large field assembly quantity, long installation period, a plurality of construction procedures, multi-professional alternate construction, tight construction period and large installation workload; the unit has high operation speed, the hydrogen content of the gas in the furnace during production is very high, the construction quality of any link of installation of equipment such as a furnace shell, a furnace roller and the like is not well controlled, and the installation precision of the furnace body equipment can not be ensured, so that serious consequences such as excessive leakage of the hydrogen of the furnace body, blockage of the furnace roller, incapability of running of strip steel and the like can be caused.
Disclosure of Invention
The invention aims to overcome the defects and provide a high-precision detection method for a rapid and efficient continuous annealing furnace.
In order to achieve the above object, the present invention is realized by:
a high-precision detection method for a continuous annealing furnace comprises
Step 1, setting a measurement detection reference;
step 1.1, setting a datum line at the position of +1m of a main steel structure upright post,
step 1.2, guiding elevation points to each layer of platform;
step 1.3, arranging auxiliary center targets on the operation side or the transmission side at the two ends of each furnace to form auxiliary center lines;
step 1.4, arranging a central line frame on each layer of platform at intervals of 30 m;
step 1.5, erecting a total station with a bent pipe eyepiece on the auxiliary central line;
step 1.6, throwing the lower line onto an upper steel structure, rechecking point positions on the auxiliary center line by using a high-precision collimator, performing secondary point calibration, starting to erect a wire frame and a piano wire on each layer of structure, and measuring and adjusting the parallelism and the flatness of the furnace roller;
step 2, arranging a detection mark on the furnace bottom chamber;
step 2.1, setting requirements of detection mark points are provided during the inspection of furnace body equipment A;
step 2.2, after the furnace bottom chamber is in place, utilizing measuring instruments such as a leica total station and a high-precision collimator to carry out accurate measurement and positioning according to marks of the measuring instruments,
step 2.3, detecting and positioning the hearth chamber, namely firstly, determining a line by the total station through a reference point, and then reaming a steel structure of the hearth chamber;
2.4, in order to conveniently guide the main axis of the lower part upwards, projecting points to an upper structure at an erection position through a bent pipe ocular lens of a total station, then checking alignment through a high-precision laser collimator to complete the setting of a detection reference of a hearth chamber, and setting a reference line of each layer of upper structure according to the method;
step 3.1, firstly measuring the main axis of the furnace body,
step 3.2, measuring and setting a rectangular control network; before the furnace shell is installed, firstly, carrying out comprehensive visual inspection on points on each main axis; because the furnace shell is inconvenient to see through after being installed, a necessary control platform is required to be additionally arranged on the platform of the furnace to be used as a rear view point while the furnace shell is checked through the view; when the furnace shell is in place, the central line of the lower opening is aligned with the central line of the foundation, and the upper opening is corrected; after the position is initially stabilized, the central line of the upper opening is projected, the instrument is aligned to the central line point on the platform, and the far point is observed by a reverse mirror at the upper opening of the furnace shell for checking; aligning the remote measuring points by a positive and negative mirror method to form a straight line, and putting a negative mirror to a furnace shell point; each group of furnace shells can be arranged and dotted according to the method; until all furnace shells are assembled;
and 4, comprehensively finishing the steps 2 and 3 when each layer of structure is provided with a detection line.
The operation method can effectively solve the problem of the method for installing and positioning the continuous annealing furnace by adopting a new construction process, saves the construction cost, reduces the resources, accelerates the construction progress, and has the characteristics of strong universality, flexible construction and suitability for construction of various similar projects.
Drawings
Fig. 1 is a first construction schematic diagram of the detection method.
FIG. 2 is a second schematic construction diagram of the detection method.
Fig. 3 is a third construction schematic diagram of the detection method.
Detailed Description
The invention is further illustrated by the following specific examples.
As shown in FIGS. 1 to 3, a high-precision detection method for a continuous annealing furnace;
one, whole thought
According to production or process requirements, the unit installation must be based on the traditional construction process, and the furnace roller installation precision control technology is further innovated and researched, so that the installation work of the annealing furnace can be guaranteed to be finished with high quality and high efficiency. The novel construction method effectively avoids the problems, and has the advantages of convenient and safe construction and low construction cost.
Second, the concrete implementation step
Before the implementation is started:
considering the characteristics that the annealing furnace unit is overlong and is arranged on the upper-layer platform, before the annealing furnace is installed, an auxiliary central line is arranged on the transmission side close to the furnace shell and penetrates through the whole annealing furnace along the length direction of the annealing furnace, and a central line frame is arranged on each layer of platform at intervals of 30 m. After the central line frame is fixed, the deviation caused by the shaking of the central line overlong steel wire is effectively controlled.
The implementation process comprises the following steps:
1. setting a perfect measurement detection reference to ensure the installation quality, for example, setting a reference line at the position of +1m of a main steel structure upright column to facilitate the measurement of the elevation and simultaneously guiding the elevation point to each layer of platform; auxiliary center marks are arranged on the operation side or the transmission side of the two ends of each furnace so as to return an auxiliary center line to the platforms of the upper furnace roller and the lower furnace roller, for example, an auxiliary center line is arranged at the position of the transmission side close to the furnace shell and penetrates through the whole annealing furnace, and a center line frame is arranged at each layer of the platform at intervals of 30 m. After the central line frame is fixed, the deviation caused by the shaking of the central line overlong steel wire is effectively controlled. Erecting a leica total station (with a bent pipe eyepiece) on an auxiliary center line, throwing a lower line onto an upper steel structure, performing point position recheck on the auxiliary line by using a high-precision collimator, performing secondary point calibration, erecting a line frame and a piano line on each layer of structure, and measuring and adjusting the parallelism and the flatness of the furnace roller.
2. And a detection mark is arranged on the furnace bottom chamber to ensure the accurate positioning of the detection mark. And setting requirements of detection mark points are provided during the detection of the furnace body equipment A. After the furnace bottom chamber is in place, accurate measurement and positioning are carried out according to marks by utilizing measuring instruments such as a leica total station (with a bent pipe), a high-precision collimator and the like, as shown in a furnace bottom chamber detection and positioning figure 1, firstly, the total station is aligned through a datum point BM1 and a BM2, then, a steel structure reaming hole of the furnace bottom chamber is enlarged as shown in figures 4 and 5, so that a lower main axis is led upwards, points are projected to an upper structure through erecting positions 1 and 3 through a bent pipe ocular lens arranged on the total station, then, the alignment is checked through a2 high-precision laser collimator, the detection datum setting of the furnace bottom chamber is completed, and each upper layer of structure is provided with a datum line according to the method.
3. And (4) measuring the middle furnace body and the furnace top chamber. Firstly, the main axis of the furnace is measured, and then the rectangular control net is measured. Before the furnace shell is installed, a full visual inspection of the points on each main axis should be performed. Because the furnace shell is inconvenient to see through after being installed, a necessary control platform is required to be additionally arranged on the platform of the furnace to be used as a rear view point while the furnace is checked through the view.
When the furnace shell is in place, the central line of the lower opening is aligned with the central line of the foundation, and the upper opening is also corrected. After the position is initially stabilized, the instrument is placed on the center line of the upper opening, the instrument is placed on E (measuring station 3), the center line point on the sighting platform and the elevation angle projection point '3' are aimed at, the upper opening of the furnace shell is observed by using a reverse mirror, and a far point A2 or A1 is observed for checking (the instrument is placed on E, and the back view A3 or A2 is also available, and the reverse mirror is placed on the furnace shell). The instrument was placed at point "3" (station 4) and aligned with a forward and reverse mirror method to remote A3 and a2 or a1, the reverse mirror was cast at the furnace shell point "4". The measuring station 4 is used for fixing the instrument on the furnace shell for measurement. Each group of furnace shells can be arranged according to the method. Until the assembly of all furnace shells is finished. The specific points are shown in fig. 2 and 3:
4. when each layer of structure is provided with a detection line, the steps 2 and 3 are comprehensively completed, and the difficult problem of installation and positioning of the continuous annealing furnace is solved.
Claims (1)
1. A high-precision detection method of a continuous annealing furnace is characterized by comprising the following steps: comprises that
Step 1, setting a measurement detection reference;
step 1.1, setting a datum line at the position of +1m of a main steel structure upright post,
step 1.2, guiding elevation points to each layer of platform;
step 1.3, arranging auxiliary center targets on the operation side or the transmission side at the two ends of each furnace to form auxiliary center lines;
step 1.4, arranging a central line frame on each layer of platform at intervals of 30 m;
step 1.5, erecting a total station with a bent pipe eyepiece on the auxiliary central line;
step 1.6, mapping the auxiliary central line at the lower part to an upper steel structure, performing point position rechecking on the auxiliary central line by using a high-precision collimator, performing secondary point calibration, starting to erect a wire frame and a piano wire on each layer of structure, and measuring and adjusting the parallelism and the flatness of a furnace roller;
step 2, arranging a detection mark on the furnace bottom chamber;
step 2.1, setting requirements of detection mark points are provided during the inspection of furnace body equipment A;
step 2.2, after the furnace bottom chamber is in place, utilizing measuring instruments such as a leica total station and a high-precision collimator to carry out accurate measurement and positioning according to marks of the measuring instruments,
step 2.3, detecting and positioning the hearth chamber, namely firstly, determining a line by the total station through a reference point, and then reaming a steel structure of the hearth chamber;
2.4, in order to conveniently guide the auxiliary central line at the lower part upwards, projecting points to an upper steel structure at an erection position through a bent pipe eyepiece of a total station, then checking alignment through a high-precision laser collimator to complete the setting of a detection reference of a hearth chamber, and setting a reference line of each layer of upper steel structure according to the method;
step 3, measuring the middle furnace body and the furnace top chamber;
step 3.1, firstly measuring the main axis of the furnace body,
step 3.2, measuring and setting a rectangular control network; before the furnace shell is installed, firstly, carrying out comprehensive visual inspection on points on each main axis; because the furnace shell is inconvenient to see through after being installed, a necessary control platform is required to be additionally arranged on the platform of the furnace to be used as a rear view point while the furnace shell is checked through the view; when the furnace shell is in place, the central line of the lower opening is aligned with the central line of the foundation, and the upper opening is corrected; after the position is initially stabilized, the central line of the upper opening is projected, the instrument is aligned to the central line point on the platform, and the far point is observed by a reverse mirror at the upper opening of the furnace shell for checking; aligning the remote measuring points by a positive and negative mirror method to form a straight line, and putting a negative mirror to a furnace shell point; each group of furnace shells can be arranged and dotted according to the method; until all furnace shells are assembled;
and 4, comprehensively finishing the steps 2 and 3 when each layer of structure is provided with a detection line.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013159800A (en) * | 2012-02-02 | 2013-08-19 | Nippon Steel & Sumitomo Metal Corp | Apparatus and method for measuring wall profile of blast furnace and method for detecting wear amount of blast furnace wall |
| CN104976891A (en) * | 2014-04-02 | 2015-10-14 | 中国二十冶集团有限公司 | First-side-then-middle annealing furnace roller mounting adjusting construction method |
| CN105710550A (en) * | 2016-03-31 | 2016-06-29 | 中冶南方工程技术有限公司 | Splicing and welding method of large converter five-connection-rod hanging device |
| CN107514967A (en) * | 2016-06-16 | 2017-12-26 | 中冶宝钢技术服务有限公司 | A kind of annealing furnace roller water detection quadratic method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013159800A (en) * | 2012-02-02 | 2013-08-19 | Nippon Steel & Sumitomo Metal Corp | Apparatus and method for measuring wall profile of blast furnace and method for detecting wear amount of blast furnace wall |
| CN104976891A (en) * | 2014-04-02 | 2015-10-14 | 中国二十冶集团有限公司 | First-side-then-middle annealing furnace roller mounting adjusting construction method |
| CN105710550A (en) * | 2016-03-31 | 2016-06-29 | 中冶南方工程技术有限公司 | Splicing and welding method of large converter five-connection-rod hanging device |
| CN107514967A (en) * | 2016-06-16 | 2017-12-26 | 中冶宝钢技术服务有限公司 | A kind of annealing furnace roller water detection quadratic method |
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Effective date of registration: 20230526 Address after: Room 2802, No. 3999 Yunchuan Road, Baoshan District, Shanghai, 2019 Patentee after: MCC Group (Shanghai) Metallurgical Industry Co.,Ltd. Patentee after: CHINA MCC20 GROUP Corp.,Ltd. Address before: 201900 No. 777 Pangu Road, Shanghai, Baoshan District Patentee before: CHINA MCC20 GROUP Corp.,Ltd. |