CN102628680B - Rotary kiln concentricity measuring method and method for determining reference line in same - Google Patents
Rotary kiln concentricity measuring method and method for determining reference line in same Download PDFInfo
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- CN102628680B CN102628680B CN201210114867.0A CN201210114867A CN102628680B CN 102628680 B CN102628680 B CN 102628680B CN 201210114867 A CN201210114867 A CN 201210114867A CN 102628680 B CN102628680 B CN 102628680B
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Abstract
The invention discloses a rotary kiln concentricity measuring method and a method for determining a reference line in the same. The method for determining the reference line is favorable for accurately measuring the concentricity and the measurement precision of the concentricity can be improved by the concentricity measuring method. The method for determining the reference line comprises the steps of: determining a setting point and a setting height of an instrument at the outer side of a cylinder body of a rotary kiln, ensuring that the reference line is overlapped with a central line of the cylinder body, and adopting an infrared ray emitted by the instrument as the reference line or adopting a sight line passing through a central point of an objective lens of the instrument as the reference line. The concentricity measuring method is used for measuring the concetricities of different positions inside the cylinder body mainly through the reference line.
Description
Technical field
The present invention relates to the rotary kiln concentricity measuring method of a kind of Rotary kiln installation field application, also relate to definite method of the datum line in the method.
Background technology
Along with making rapid progress of production technology development, the raising of production technology requires installation accuracy also will improve thereupon.Progressively develop to the production technology of rotary kiln, mineral hot furnace with the iron-smelting process of sintering, blast furnace at present.Increasing manufacturing enterprise selects the production technology of rotary kiln, mineral hot furnace to replace sintering, blast furnace production technology.The installation accuracy of rotary kiln is most important to the normal operation of producing.Rotary kiln is in installation process, and the concentricity of each position of its cylindrical shell is a very important parameter in Rotary kiln installation process, is also directly connected to the installation accuracy of rotary kiln for the measuring method of concentricity.
Rotary kiln concentricity is namely using the circle center line connecting at the two ends of the cylindrical shell of rotary kiln as center line, and in cylindrical shell, the center of circle of xsect of other position and the deviation of this center line are the concentricity of this position.At present, the measuring method of the concentricity of the cylindrical shell of rotary kiln is for hanging steel wire method.Namely between cylinder inboard wall two-port, draw respectively two thin steel wires, between two thin steel wires, be separated by 90 °, using these two thin steel wires as datum line, determine concentricity.This kind of method has the following disadvantages: because the axial length of cylinder of rotary kiln is longer, make the length of thin steel wire also longer, this just makes thin steel wire can have falling phenomenon, especially for the cylindrical shell of large-sized rotary kiln, its axial length is more than or equal to 100 meters, the falling phenomenon of thin steel wire is more serious, thereby has had a strong impact on the precision that concentricity is measured.And for large-sized rotary kiln, when installation, generally understand interval in inner barrel multiple bracing frames are set, these bracing frames are used for supporting cylindrical shell, prevent barrel distortion, owing to there being the existence of these bracing frames, make the measurement of concentricity of cylindrical shell more difficult.
Summary of the invention
The technical matters that the present invention solves is to provide a kind of definite method that is conducive to the datum line of measuring for rotary kiln concentricity of accurately measuring concentricity.
The technical solution adopted for the present invention to solve the technical problems is:
Be used for definite method of the datum line of rotary kiln concentricity measurement, comprise the cylindrical shell of rotary kiln, further comprising the steps of:
A, determine and the benchmark center of circle of the xsect at cylindrical shell two ends be respectively the benchmark center of circle of low side and the high-end benchmark center of circle;
B, level reference is set below cylindrical shell, the center vertical guide of cylindrical shell is determined in two benchmark centers of circle determining by total powerstation and steps A on level reference, described center vertical guide is through two benchmark centers of circle and vertical with level reference, and look on the level reference of the outside correspondence of wherein one end of cylindrical shell by total powerstation a bit and setting up an office as instrument stand, described instrument stand is set up an office and be positioned on the vertical guide of center;
C, determine instrument antenna height h:
When instrument stand is set up an office while being positioned at outside cylindrical shell low side: h=a1-H1, wherein, a1 is that the benchmark center of circle of low side is apart from the vertical range of level reference, H1=Q*D1, wherein Q is cylindrical shell degree of tilt, and D1 is that instrument stand is set up an office and passes through the distance between the pedal line in the benchmark center of circle and the intersection point of level reference of low side;
When instrument stand is set up an office while being positioned at the high-end outside of cylindrical shell: h=a2+H2, wherein, a2 is the high-end benchmark center of circle vertical range apart from level reference, H2=Q*D2, wherein Q is cylindrical shell degree of tilt, and D2 is that instrument stand is set up an office and passes through the distance between the high-end pedal line in the benchmark center of circle and the intersection point of level reference;
D, on instrument stand is set up an office, set up datum line location instrument according to the definite instrument antenna height h of step C, the infrared ray that datum line location instrument is sent as datum line maybe using the sight line of the central point of the object lens through datum line location instrument as datum line.
In said method, datum line can not be subject to the factor impacts such as gravity, can ensure that datum line overlaps with the center line of cylindrical shell all the time in inner barrel, the center line of cylindrical shell is the line in the benchmark center of circle at cylindrical shell two ends namely, so just can ensure the accuracy that concentricity is measured.Especially be applicable to the measurement of huge revolving kiln cylinder body.
Further: described instrument stand is set up an office and is positioned at the low side outside of cylindrical shell.At low side, the antenna height of instrument is lower, facilitates setting up of instrument, and also convenient operation personnel adjust and observe instrument.
Further: the axial length of described cylindrical shell is more than or equal to 100 meters.Cylindrical shell is longer, more can demonstrate superiority and the accuracy of method of the present invention.
Further: described datum line location instrument is total powerstation.
Further: in step D, in the time setting up datum line location instrument, on setting up an office the level reference in outside, looks for a bit as leveling point instrument stand, the vertical gage that extends on leveling point, then one end of surveyor's staff is resisted against datum line location instrument in the heart, by the other end of surveyor's staff and gage against, synchronously adjust the height of surveyor's staff and datum line location instrument until datum line location instrument sets up puts in place by the reading on gage.Said method can be convenient to determine fast instrument antenna height, is also conducive to the positional precision that ensures that instrument sets up.
The present invention also provides a kind of rotary kiln concentricity measuring method, and this measuring method can accurately be measured the concentricity of the position of the cylindrical shell of rotary kiln.The method is specially: the definite method that comprises the above-mentioned datum line of measuring for rotary kiln concentricity, also comprise step e: selected measuring position in cylindrical shell, determine the center of circle of xsect corresponding to measuring position, the deviation of the datum line in the described center of circle and step D is the concentricity of measuring position.Said method is owing to can ensureing consistance and the stability of datum line, so the measurement of each position concentricity of cylindrical shell is very accurate.
Further: between the two ends of described inner barrel, interval is provided with one group of bracing frame, the end of support frame as described above is connected with cylindrical shell, the central authorities of support frame as described above have light hole, and the sight line of the central point of the object lens of the infrared ray that described datum line location instrument sends or process datum line location instrument can be passed each light hole successively.For some large-sized rotary kilns, its inner barrel likely can arrange multiple bracing frames, and these bracing frames are used for supporting cylindrical shell, prevent barrel distortion, adopts said method can be convenient to this cylindrical shell to carry out the measurement of concentricity.
Further: support frame as described above is arranged on the xsect of cylindrical shell, on support frame as described above, be also provided with the removable baffle plate for blocking light hole.Can be convenient to like this center of circle of xsect to be directly indicated on bracing frame.
The invention has the beneficial effects as follows: can effectively ensure by datum line of the present invention the precision that concentricity is measured.Precision by the definite concentricity of concentricity measuring method of the present invention significantly improves.The positional precision of the rotary kiln after installing is significantly improved, for good basis has been laid in the use of rotary kiln.
Brief description of the drawings
Fig. 1 is the schematic diagram of determining instrument antenna height;
Fig. 2 is the schematic diagram of adjusting height of instrument by gage and surveyor's staff;
Fig. 3 is the schematic diagram that is provided with light hole and baffle plate on the bracing frame being positioned on the xsect of cylindrical shell.
In figure, be labeled as: center line 1, cylindrical shell 2, the benchmark center of circle 3, the benchmark center of circle 4, level reference 5, dot-and-dash line 6, dot-and-dash line 7, dot-and-dash line 8, dot-and-dash line 9, dot-and-dash line 10, instrument stand sets up an office 11, and instrument stand sets up an office 12, dot-and-dash line 13, intersection point 14, intersection point 15, instrument 16, center 17, surveyor's staff 18, gage 19, leveling point 20, bracing frame 22, light hole 23, baffle plate 24.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
As shown in Figure 1 to Figure 3, definite method of datum line of measuring for rotary kiln concentricity, comprises the cylindrical shell 2 of rotary kiln, further comprising the steps of:
A, determine the benchmark center of circle of the xsect at cylindrical shell 2 two ends, described two benchmark centers of circle are respectively the benchmark center of circle 3 of low side and the high-end benchmark center of circle 4.Determine that the center of circle of certain xsect is prior art cylindrical shell 2 is interior, definite method in above-mentioned two benchmark centers of circle has multiple, can determine by professional instrument, also can be by the planing an of straight rod-shaped, half path length that the length of planing is cylindrical shell.The afterbody of planing leans against a bit upper of cylinder inboard wall, make an arc as the center of circle taking this point, then on cylinder inboard wall some other on make an arc for initial point, the intersection point of several camber lines is the center of circle.In order to make the center of circle can fix demonstration, in inner barrel, dial plate can be set, dial plate is positioned on the xsect of cylindrical shell, incorporates the line of directly making an arc on dial plate into, and the center of circle just can be presented on dial plate like this.Large-sized rotary kiln if, if inner barrel is provided with bracing frame, the line of can directly making an arc on the bracing frame of inner barrel setting, is presented at the center of circle on bracing frame.
B, level reference 5 is set below cylindrical shell 2, the center vertical guide of cylindrical shell is determined in two benchmark centers of circle determining by total powerstation and steps A on level reference 5, described center vertical guide is through two benchmark centers of circle and vertical with level reference 5, and look on the reference field of the outside correspondence of wherein one end of cylindrical shell 2 by total powerstation a bit and setting up an office as instrument stand, described instrument stand is set up an office and be positioned on the vertical guide of center.
C, determine instrument antenna height h:
When instrument stand is set up an office while being positioned at outside the low side of cylindrical shell 2: h=a1-H1, wherein, a1 is that the benchmark center of circle 3 of low side is apart from the vertical range of level reference, H1=Q*D1, wherein Q is cylindrical shell degree of tilt, and D1 is that instrument stand sets up an office 11 and through the distance between the pedal line in the benchmark center of circle 3 and the intersection point 14 of level reference 5 of low side; Above-mentioned Q is the tangent value at the pitch angle of cylindrical shell 2 namely, and the pitch angle of cylindrical shell 2 is the center line 1 and horizontal angle of cylindrical shell namely.The for example pitch angle of cylindrical shell 2 is 2 degree, and Q is 0.035.As shown in Figure 1, dot-and-dash line 13 equals h, and dot-and-dash line 7 equals a1, and dot-and-dash line 6 equals D1.
When instrument stand is set up an office while being positioned at the high-end outside of cylindrical shell 2: h=a2+H2, wherein, a2 is the high-end benchmark center of circle 4 vertical range apart from level reference, H2=Q*D2, wherein Q is cylindrical shell degree of tilt, and D2 is that instrument stand sets up an office 12 and through the distance between the high-end pedal line in the benchmark center of circle 4 and the intersection point 15 of level reference 5.As shown in Figure 1, dot-and-dash line 10 equals h, and dot-and-dash line 8 equals a2, and dot-and-dash line 9 equals D2.
D, on instrument stand is set up an office, set up datum line location instrument according to the definite instrument antenna height h of step C, the infrared ray that datum line location instrument is sent as datum line maybe using the sight line of the central point of the object lens through datum line location instrument as datum line.
Set up datum line location instrument on instrument stand is set up an office time, to make the central vertical of datum line location instrument drop on instrument stand sets up an office.When use, because datum line can ensure to overlap with the center line 1 of cylindrical shell 2 all the time, therefore the precision of this datum line is higher, especially for the cylindrical shell of large-sized rotary kiln, namely the axial length of cylindrical shell is more than or equal to 100 meters, because the axial length of cylindrical shell is longer, more need datum line to there is higher consistance and stability, not because the prolongation of distance changes.
Above-mentioned instrument stand is set up an office and can be positioned at the high-end outside of cylindrical shell 2, also can be positioned at the low side outside of cylindrical shell 2.As shown in Figure 1, the instrument stand 11 low side outsides that are positioned at cylindrical shell 2 of setting up an office, the height like this can lowering apparatus setting up, is convenient to setting up and the measurement of correlation parameter of instrument.
Said reference line location instrument can, for Laser emission instrument or for measuring the instrument such as the stadimeter with object lens of air line distance, be preferably total powerstation, because repeatedly using total powerstation in whole method, can accelerate like this progress of setting up of instrument, also can reduce costs.On the basis of the above, for the convenient height of adjusting instrument, instrument is in place fast and accurately, as shown in Figure 2, in step D, in the time setting up datum line location instrument, on setting up an office the level reference in outside, looks for a bit as leveling point instrument stand, the vertical gage that extends on leveling point, then one end of surveyor's staff is resisted against datum line location instrument in the heart, by the other end of surveyor's staff and gage against, synchronously adjust the height of surveyor's staff and datum line location instrument until datum line location instrument sets up puts in place by the reading on gage.Namely the height control of instrument is put in place.Above-mentioned gage 19 can be steel tape or ruler etc.
Rotary kiln concentricity measuring method of the present invention, comprise definite method of the above-mentioned datum line of measuring for rotary kiln concentricity, also comprise step e: in the interior selected measuring position of cylindrical shell 2, determine the center of circle of xsect corresponding to measuring position, the deviation of the datum line in the described center of circle and step D is the concentricity of measuring position.Because datum line can ensure consistance and stability, therefore the concentricity of cylindrical shell 2 interior positions also can ensure its measuring accuracy accordingly, and the install and adjust of this cylindrical shell 2 brings reliable data supporting, can significantly improve the installation site precision of cylindrical shell 2.
As shown in Figure 3, in the time that described rotary kiln is large-sized rotary kiln, its inner barrel is likely provided with multiple bracing frames, and these bracing frames likely affect passing through of said reference line, namely may stop infrared ray or sight line.As shown in Figure 3, between the two ends of described inner barrel, interval is provided with one group of bracing frame 22, the end of support frame as described above 22 is connected with cylindrical shell 2, in order to overcome above-mentioned deficiency, the central authorities of support frame as described above 22 have light hole 23, and the sight line of the central point of the object lens of the infrared ray that described datum line location instrument sends or process datum line location instrument can be passed each light hole successively.Owing to being provided with light hole, datum line can pass each light hole successively, all can measure concentricity by said reference line like this in each position of inner barrel.
On the basis of the above, as shown in Figure 3, support frame as described above 22 is arranged on the xsect of cylindrical shell 2, is also provided with the removable baffle plate 24 for blocking light hole 23 on support frame as described above 22.Above-mentioned baffle plate 24 can be directly installed on the support in light hole 23 outsides by hinge.Slideway also can be set, and baffle plate 24 can slide on bracing frame, controls the switching of light hole 23 with this.Because bracing frame 22 is positioned on the xsect of cylindrical shell 2, determine the concentricity of this place's cylindrical shell time, this bracing frame 22 can be used as above-mentioned dial plate, like this can be thereon determine and indicate the center of circle by above-mentioned planing.
Claims (8)
1. definite method of datum line of measuring for rotary kiln concentricity, comprises and it is characterized in that the cylindrical shell of rotary kiln comprising the following steps:
A, determine the benchmark center of circle of the xsect at cylindrical shell two ends, described two benchmark centers of circle are respectively the benchmark center of circle of low side and the high-end benchmark center of circle;
B, level reference is set below cylindrical shell, the center vertical guide of cylindrical shell is determined in two benchmark centers of circle determining by total powerstation and steps A on level reference, described center vertical guide is through two benchmark centers of circle and vertical with level reference, and look on the level reference of the outside correspondence of wherein one end of cylindrical shell by total powerstation a bit and setting up an office as instrument stand, described instrument stand is set up an office and be positioned on the vertical guide of center;
C, determine instrument antenna height h:
When instrument stand is set up an office while being positioned at outside cylindrical shell low side: h=a1-H1, wherein, a1 is that the benchmark center of circle of low side is apart from the vertical range of level reference, H1=Q*D1, wherein Q is cylindrical shell degree of tilt, and D1 is that instrument stand is set up an office and passes through the distance between the pedal line in the benchmark center of circle and the intersection point of level reference of low side;
When instrument stand is set up an office while being positioned at the high-end outside of cylindrical shell: h=a2+H2, wherein, a2 is the high-end benchmark center of circle vertical range apart from level reference, H2=Q*D2, wherein Q is cylindrical shell degree of tilt, and D2 is that instrument stand is set up an office and passes through the distance between the high-end pedal line in the benchmark center of circle and the intersection point of level reference;
D, on instrument stand is set up an office, set up datum line location instrument according to the definite instrument antenna height h of step C, the infrared ray that datum line location instrument is sent as datum line maybe using the sight line of the central point of the object lens through datum line location instrument as datum line.
2. definite method of the datum line of measuring for rotary kiln concentricity as claimed in claim 1, is characterized in that: described instrument stand is set up an office and is positioned at the low side outside of cylindrical shell.
3. definite method of the datum line of measuring for rotary kiln concentricity as claimed in claim 1, is characterized in that: the axial length of described cylindrical shell is more than or equal to 100 meters.
4. definite method of the datum line of measuring for rotary kiln concentricity as claimed in claim 1, is characterized in that: described datum line location instrument is total powerstation.
5. definite method of the datum line of measuring for rotary kiln concentricity as claimed in claim 4, it is characterized in that: in step D, in the time setting up datum line location instrument, on setting up an office the level reference in outside, looks for a bit as leveling point instrument stand, the vertical gage that extends on leveling point, then one end of surveyor's staff is resisted against datum line location instrument in the heart, by the other end of surveyor's staff and gage against, synchronously adjust the height of surveyor's staff and datum line location instrument until datum line location instrument sets up puts in place by the reading on gage.
6. rotary kiln concentricity measuring method, it is characterized in that: the definite method that comprises the datum line of measuring for rotary kiln concentricity described in any one in claim 1 to 5, also comprise step e: selected measuring position in cylindrical shell, determine the center of circle of xsect corresponding to measuring position, the deviation of the datum line in the described center of circle and step D is the concentricity of measuring position.
7. rotary kiln concentricity measuring method as claimed in claim 6, it is characterized in that: between the two ends of described inner barrel, interval is provided with one group of bracing frame, the end of support frame as described above is connected with cylindrical shell, the central authorities of support frame as described above have light hole, and the sight line of the central point of the object lens of the infrared ray that described datum line location instrument sends or process datum line location instrument is successively through each light hole.
8. rotary kiln concentricity measuring method as claimed in claim 7, is characterized in that: support frame as described above is arranged on the xsect of cylindrical shell, is also provided with the removable baffle plate for blocking light hole on support frame as described above.
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| CN102901464B (en) * | 2012-10-18 | 2015-03-25 | 扬州万福压力容器有限公司 | Alignment method of kettle-like equipment |
| CN103837100A (en) * | 2012-11-27 | 2014-06-04 | 中国二十冶集团有限公司 | Application of a laser tracker in the measurement of coaxiality of hollow shafts of a large-scale ball mill |
| CN103680921A (en) * | 2013-12-24 | 2014-03-26 | 天威保变（秦皇岛）变压器有限公司 | Sleeving locating method of coil of large-sized power transformer |
| 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 |
| 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 |
| CN109931890B (en) * | 2019-04-15 | 2020-08-28 | 山西阳煤化工机械（集团）有限公司 | Method for detecting concentricity of pressure vessel shell |
| CN114018180A (en) * | 2021-11-01 | 2022-02-08 | 中国十九冶集团有限公司 | Barrel concentricity detection method |
| CN114562962A (en) * | 2022-02-28 | 2022-05-31 | 首钢京唐钢铁联合有限责任公司 | Equipment coaxiality measuring method based on laser tracker |
| CN116336974B (en) * | 2023-05-25 | 2023-08-15 | 中建五洲工程装备有限公司 | Light transmission device and use method |
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