CN104121870A - Measurement method for rotary kiln cylinder coaxiality - Google Patents

Measurement method for rotary kiln cylinder coaxiality Download PDF

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Publication number
CN104121870A
CN104121870A CN201310144891.3A CN201310144891A CN104121870A CN 104121870 A CN104121870 A CN 104121870A CN 201310144891 A CN201310144891 A CN 201310144891A CN 104121870 A CN104121870 A CN 104121870A
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China
Prior art keywords
cylinder
rotary kiln
cylindrical shell
instrument
circular hole
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Pending
Application number
CN201310144891.3A
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Chinese (zh)
Inventor
任树辉
庞佳骋
赵启涛
付军
袁金鹏
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China MCC20 Group Corp Ltd
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China MCC20 Group Corp Ltd
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Publication date
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Priority to CN201310144891.3A priority Critical patent/CN104121870A/en
Publication of CN104121870A publication Critical patent/CN104121870A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a rotary kiln, particularly to a measurement method for rotary kiln cylinder coaxiality. The measurement method comprises the following steps: step one, before rotary kiln cylinder lifting, using a divider caliper unit to draw four arcs at two ends of each cylinder by using four arc equal division point as circle centers and lengths less than cylinder radius as radius, enabling the arcs to be intersected at four points and using the intersection point of the four points as the center of the cylinder, and then carrying out cylinder lifting work; step two, after completion of the whole cylinder lifting, setting measurement points at Chinese character "mi"-shaped support portions at two ends of each cylinder and respectively setting circular holes used as the centers of the cylinders; step three, erecting an instrument; step four, starting the instrument and calibrating the instrument; and step five, carrying out data reading; to be specific, adjusting the elevation of a theodolite and then measuring circular holes at the Chinese character "mi"-shaped support portions at the two ends of each cylinder, replacing scale plates of the laser theodolite at all circular holes, aligning the center cross curves, and measuring the error between the center cross curves and the laser point to obtain the error of the cylinder coaxiality. With the measurement method, measurement becomes convenient and precise without being influenced by the weather.

Description

A kind of cylinder of rotary kiln method for measuring coaxiality
Technical field
The present invention relates to rotary kiln, relate in particular to a kind of cylinder of rotary kiln measuring method.
Background technology
The measurement of cylinder of rotary kiln right alignment is the important step that check cylinder of rotary kiln is installed, and the quality of right alignment directly affects the use of rotary kiln, and coaxiality deviation is larger, and the serviceable life of rotary kiln will be shorter.In the past the measurement of rotary kiln right alignment is adopted to the steel wire method of hanging more, target method and the outer thread-ligating therapy of cylinder centered by minute.The first center target method is in outside, cylinder of rotary kiln two ends, by designing requirement, to carry out 2 targets to draw center line, decile 4 points on cylindrical shell, with the divider calipers that is less than cylindrical shell radius, on the target plate of cylindrical shell rice word support centre, draw four arcs and meet at 4 points, then measure the right alignment that 4 methods to the distance of central steel silk thread of each section of cylindrical shell are measured cylindrical shells; The outer thread-ligating therapy of the second cylinder is that 4 of deciles draw steel wire outside first segment cylindrical shell and final section cylindrical shell, measures respectively every section of cylindrical shell to the distance of steel wire; First method need to be done at cylindrical shell two ends two points, has increased the error of measuring, and the instability of measuring, is subject to weather effect large; Second method be subject to cylinder material and weather effect large, measure difficulty, measuring error is large; Therefore current measuring method cannot meet the requirement of present stage to installation accuracy.
 
Summary of the invention
The present invention is intended to solve the above-mentioned defect of prior art, and a kind of cylinder of rotary kiln method for measuring coaxiality is provided.The present invention measures precisely convenient, is not subject to weather effect.
In order to solve the problems of the technologies described above, a kind of cylinder of rotary kiln method for measuring coaxiality, this measuring method comprises:
Step 1, before cylinder of rotary kiln lifting, with divider calipers, at the two ends of every joint cylindrical shell, along 4 of circular arc deciles, be the center of circle, being less than cylindrical shell radius length is that radius draws four circular arcs, intersects at 4 points, the intersection point of 4 lines is cylindrical shell center, then carries out Barrel hoisting work;
Step 2, after whole Barrel hoisting, in rice word support place of the two ends of every joint cylindrical shell, measured point is set, at each place, measured point, a circular hole is all set as the cylindrical shell center at this place, the size of circular hole is respectively Φ 45, Φ 40, Φ 35, Φ 30, Φ 25 ... Φ 5 amounts to 9, near kiln hood side, place transit place maximum circular hole is set, to can observe circular hole below;
Step 3, instrument is set up at scene: when determining instrument decorating position, must can meet reading of data on all measuring positions, instrument status requirement is fixing platform, and does not have crane or automobile to move around.
Step 4, opens instrument: before measurement, should to instrument, calibrate according to instrumentation rules;
Step 5, the reading of data: the circular hole that the laser alignment most proximal end wheel band joint sending by laser transit test mirrors and distal-most end wheel band save, to adjust the elevation angle of transit; Measure again afterwards in each section of cylindrical shell two ends rice words support circular hole, the scaleplate of laser transit band is placed into respectively on each circular hole, to good central cross line, then measure the error of this place's central cross line and laser spots, this error had been both the error of cylindrical shell right alignment.
Described a kind of cylinder of rotary kiln method for measuring coaxiality, the fixing platform in described step 3 is concrete foundation.
Described a kind of cylinder of rotary kiln method for measuring coaxiality, described step 3 must not be changed laser transit to step 6, must holding position and take measurement of an angle constant.
The present invention adopts advanced laser transit to measure, and measuring accuracy is high, accurately and reliably, has solved a measurement difficult problem for cylinder of rotary kiln right alignment.Adopt measuring method of the present invention, do not need other auxiliary survey instruments, simple to operate, quick, measured value accurately, reliably, is saved labour's input and reduces labour intensity.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated:
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is the schematic diagram of described step 1.
Embodiment
As depicted in figs. 1 and 2, the invention process step:
Step 1, before cylinder of rotary kiln lifting, with divider calipers, 4 of the rice word support place deciles at the two ends of every joint cylindrical shell draw four circular arcs, intersect at meter Zi Cheng center 4 points, the intersection point of 4 lines is cylindrical shell center, the cross curve that 4 cross curve that are linked to be are cylindrical shell center take respectively an a, some b, some c, some d is the center of circle, and the L (L is less than cylindrical shell radius) of take intersects at A, B, C, D 4 points for radius picture four arcs; Connect AC, BD and must intersect at center of circle O point, AC, BD are cylindrical shell central cross line., then carry out Barrel hoisting work;
Step 2, after whole Barrel hoisting, in meter Zi Cheng center, the two ends of every joint cylindrical shell, measured point is set, at each place, measured point, a circular hole (the cylindrical shell center at this place) is all set, the size of circular hole is respectively Φ 45, Φ 40, Φ 35, Φ 30, Φ 25 ..., near kiln hood side (placing transit place), maximum circular hole is set, to can observe circular hole below.
Step 3, is familiar with using method and the principle of work of laser transit.
Instrument is set up at scene: when determining instrument decorating position, must be able to meet reading of data on all measuring positions.Because extraneous vibrations meeting impacts the precision of measuring, so instrument status requirement is fixing platform, preferably in concrete foundation, and there are not crane or automobile action around.
Step 4, opens instrument: due to reasons such as instrument is carried, used for a long time or jolted, collisions, laser transit differs very large in calibration fore-and-aft survey precision. before therefore measuring, should to instrument, calibrate according to instrumentation rules.
Step 5, the reading of data: the circular hole that the laser alignment most proximal end wheel band joint sending by laser transit test mirrors and distal-most end wheel band save, to adjust the elevation angle of transit.Measure again afterwards in each section of cylindrical shell two ends rice words support circular hole, the scaleplate of laser transit band is placed into respectively on each circular hole, to good central cross line, then measure the error of this place's central cross line and laser spots, this error had been both the error of cylindrical shell right alignment.
In measuring process, taking measurement of an angle of laser transit can not change;
In same one-shot measurement, should use same laser transit; In measuring process, surveying instrument position can not change.

Claims (3)

1. a cylinder of rotary kiln method for measuring coaxiality, is characterized in that, this measuring method comprises:
Step 1, before cylinder of rotary kiln lifting, with divider calipers, at the two ends of every joint cylindrical shell, along 4 of circular arc deciles, be the center of circle, being less than cylindrical shell radius length is that radius draws four circular arcs, intersects at 4 points, the intersection point of 4 lines is cylindrical shell center, then carries out Barrel hoisting work;
Step 2, after whole Barrel hoisting, in rice word support place of the two ends of every joint cylindrical shell, measured point is set, at each place, measured point, a circular hole is all set as the cylindrical shell center at this place, the size of circular hole is respectively Φ 45, Φ 40, Φ 35, Φ 30, Φ 25, Φ 20, Φ 15, Φ 10, Φ 5 amounts to 9, near kiln hood side, place transit place maximum circular hole is set, to can observe circular hole below;
Step 3, instrument is set up at scene: when determining instrument decorating position, must can meet reading of data on all measuring positions, instrument status requirement is fixing platform, and does not have crane or automobile to move around;
Step 4, opens instrument: before measurement, should to instrument, calibrate according to instrumentation rules;
Step 5, the reading of data: the circular hole that the laser alignment most proximal end wheel band joint sending by laser transit test mirrors and distal-most end wheel band save, to adjust the elevation angle of transit; Measure again afterwards in each section of cylindrical shell two ends rice words support circular hole, the scaleplate of laser transit band is placed into respectively on each circular hole, to good central cross line, then measure the error of this place's central cross line and laser spots, this error had been both the error of cylindrical shell right alignment.
2. a kind of cylinder of rotary kiln method for measuring coaxiality according to claim 1, is characterized in that, the fixing platform in described step 3 is concrete foundation.
3. a kind of cylinder of rotary kiln method for measuring coaxiality according to claim 1, is characterized in that, described step 3 must not be changed laser transit to step 6, must holding position and take measurement of an angle constant.
CN201310144891.3A 2013-04-24 2013-04-24 Measurement method for rotary kiln cylinder coaxiality Pending CN104121870A (en)

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CN201310144891.3A CN104121870A (en) 2013-04-24 2013-04-24 Measurement method for rotary kiln cylinder coaxiality

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Application Number Priority Date Filing Date Title
CN201310144891.3A CN104121870A (en) 2013-04-24 2013-04-24 Measurement method for rotary kiln cylinder coaxiality

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CN104121870A true CN104121870A (en) 2014-10-29

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105823329A (en) * 2016-03-29 2016-08-03 中化二建集团有限公司 Mounting construction method for rotary kiln
CN107389022A (en) * 2017-02-21 2017-11-24 北京宏科瑞达工程技术有限公司 A kind of measuring method of hot centerline of rotary kiln linearity
CN107860340A (en) * 2015-10-20 2018-03-30 清华大学 Pitch ear auricle assembly pin-and-hole method for measuring coaxiality
CN106052625B (en) * 2016-08-22 2018-11-30 中国十九冶集团有限公司南京分公司 The method for measuring cylinder concentricity
CN109556395A (en) * 2018-11-23 2019-04-02 中国二十二冶集团有限公司 Cylinder of rotary kiln adjusting of centerline method
CN111521144A (en) * 2020-05-13 2020-08-11 山西汾西重工有限责任公司 Concentricity processing method and system
CN111590230A (en) * 2019-02-20 2020-08-28 中建五洲工程装备有限公司 Light transmission device and use method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0420663A2 (en) * 1989-09-29 1991-04-03 Hartco Engineering Inc., Hot kiln alignment system
CN102706139A (en) * 2012-03-31 2012-10-03 中色十二冶金建设有限公司 Method for assembling rotary kiln
CN202599412U (en) * 2012-03-07 2012-12-12 中色十二冶金建设有限公司 Center measurement device for section of rotary kiln barrel body
CN202792925U (en) * 2012-03-31 2013-03-13 中色十二冶金建设有限公司 Segmental joint of rotary kiln cylinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0420663A2 (en) * 1989-09-29 1991-04-03 Hartco Engineering Inc., Hot kiln alignment system
CN202599412U (en) * 2012-03-07 2012-12-12 中色十二冶金建设有限公司 Center measurement device for section of rotary kiln barrel body
CN102706139A (en) * 2012-03-31 2012-10-03 中色十二冶金建设有限公司 Method for assembling rotary kiln
CN202792925U (en) * 2012-03-31 2013-03-13 中色十二冶金建设有限公司 Segmental joint of rotary kiln cylinder

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
杨根喜: "回转窑筒体轴线测量方法与系统", 《仪表技术与传感器》 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107860340A (en) * 2015-10-20 2018-03-30 清华大学 Pitch ear auricle assembly pin-and-hole method for measuring coaxiality
CN105823329A (en) * 2016-03-29 2016-08-03 中化二建集团有限公司 Mounting construction method for rotary kiln
CN106052625B (en) * 2016-08-22 2018-11-30 中国十九冶集团有限公司南京分公司 The method for measuring cylinder concentricity
CN107389022A (en) * 2017-02-21 2017-11-24 北京宏科瑞达工程技术有限公司 A kind of measuring method of hot centerline of rotary kiln linearity
CN109556395A (en) * 2018-11-23 2019-04-02 中国二十二冶集团有限公司 Cylinder of rotary kiln adjusting of centerline method
CN111590230A (en) * 2019-02-20 2020-08-28 中建五洲工程装备有限公司 Light transmission device and use method
CN111521144A (en) * 2020-05-13 2020-08-11 山西汾西重工有限责任公司 Concentricity processing method and system

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