CN102435163B - Hydroturbine blade profile measurement device and method - Google Patents
Hydroturbine blade profile measurement device and method Download PDFInfo
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- CN102435163B CN102435163B CN 201110279732 CN201110279732A CN102435163B CN 102435163 B CN102435163 B CN 102435163B CN 201110279732 CN201110279732 CN 201110279732 CN 201110279732 A CN201110279732 A CN 201110279732A CN 102435163 B CN102435163 B CN 102435163B
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Abstract
A hydroturbine blade profile measurement device comprises horizontal measuring rods, circular arc-shaped measuring holders and a pair of fixed supports, wherein both ends of the horizontal measuring rods are respectively connected with one of the fixed supports, the circular arc-shaped measuring holders are mounted on the fixed supports, first ranging probes which can be horizontally moved along the horizontal measuring rods are mounted on the horizontal measuring rods, second ranging probes which can be moved circularly along the circular arc-shaped measuring holders are mounted on the circular arc-shaped measuring holders, the circle centres O of the circular motion tracks of the second ranging probes fall in the cross section of a measured blade, the circular arc-shaped measuring holders are provided with circular arc datum points P, and the connecting lines of the circle centres O and the circular arc datum points P are horizontal. The hydroturbine blade profile measurement device has the advantages of simple structure, low cost, high measurement efficiency and high measurement precision, and can conveniently carry out measurement on the site of hydropower plant unit overhaul. A method for measuring blades by using the device has the advantages of high efficiency, high measurement precision and convenient data processing.
Description
Technical field
The present invention relates to the turbine blade blade profile measurement, relate in particular to axial-flow type and tubular turbine vane foil measurement mechanism and measuring method.
Background technology
Along with the develop rapidly of power industry, the demand of power equipments such as the hydraulic turbine is constantly increased the quality requirements increasingly stringent.Turbine blade is as the vital part in the hydraulic turbine, blade surface quality and manufacturing accuracy will directly have influence on the serviceable life of hydraulic performance, generating efficiency, run stability and this water wheels unit of whole water wheels unit, this just the measurement of vane foil be subjected to the reason that people pay close attention to always.
The blade profile of turbine blade is comparatively complicated, special, and the molded lines that pushes up each cross section of blade root from leaf is all inequality, so its profile measurement is also relatively more difficult.Measuring method mainly contains template method, transit method and laser tracker method etc. at present.Template method can be because of the reason of card operating personnel's body gesture instability and blade groove readability during model, and is hour big when causing the model gap, is difficult for accurately judging vane foil; Transit method measurement tolerance scope is bigger, and requires to use in good daylighting environment, and the blade profile in-site measurement of turbine blade carries out in pipeline mostly, and the daylighting environment can't satisfy measurement requirement, and therefore the result who records also can produce bigger error; Laser tracker method measuring accuracy height, measuring distance are big, but the laser tracker apparatus expensive, it is too big to measure cost.Above-mentioned measuring method respectively has characteristics, but takes all factors into consideration from aspects such as efficiency of measurement, measuring accuracy and costs, and these measuring methods have certain degree of difficulty on-the-spot use of hydroelectric power plant's unit maintenance.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide a kind of simple in structure, with low cost, efficiency of measurement is high, measuring accuracy is high, be convenient to measure at unit maintenance scene, hydroelectric power plant, the turbine blade blade profile measurement device and the measuring method thereof of convenient data processing.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of turbine blade blade profile measurement device, comprise the horizontal survey bar, circular arc measurement bay and a pair of fixed support, described horizontal survey bar two ends connect a fixed support respectively, described circular arc measurement bay is installed on the fixed support, be equiped with on the described horizontal survey bar and can pop one's head in along first range finding that the horizontal survey bar moves horizontally, be equiped with the second range finding probe that can move on the described circular arc measurement bay along the circular arc of circular arc measurement bay, the center of circle O of the described second range finding probe circular motion track drops in the xsect of tested blade, described circular arc measurement bay is provided with circular arc reference point P, and the line of described center of circle O and described circular arc reference point P is horizontally disposed with.
Be equiped with level meter on the described horizontal survey bar, described circular arc measurement bay is provided with the leveling face that is parallel to center of circle O and circular arc reference point P line, is equiped with level meter on the described leveling face.
Be equiped with drive sprocket, driven sprocket, chain, horizontal sliding seat on the described horizontal survey bar and be used to drive the wheel that draws of drive sprocket, described drive sprocket and driven sprocket are divided into horizontal survey bar two ends, described chain is set around on described drive sprocket and the driven sprocket, the two ends of described chain are connected on the described horizontal sliding seat, the described wheel that draws is connected with drive sprocket is coaxial, and the described first range finding probe is installed on the described horizontal sliding seat.
Described horizontal survey bar top offers the L-shaped rotating shaft mounting groove in cross section, and the rotating shaft mounting groove of described driven sprocket one side offers the voussoir socket, is equiped with in the described voussoir socket to be used to drive the chain tension voussoir of the rotating shaft of driven sprocket away from drive sprocket.
Described circular arc measurement bay is provided with the rack-track of circular arc and supports track, be equiped with the circular arc slip base on the described rack-track, described circular arc slip base comprises pedestal, driven wheel, support plate, support spring, ball and maintenance bar, described driven wheel is installed on the described pedestal and with described rack-track and meshes, the described spring that supports is held in described supporting between plate and the pedestal, described ball is located at and is supported plate and described supporting between the track, described maintenance bar one end is fixed on the described pedestal, the other end is placed in the described through hole that supports on the plate, and the described second range finding probe is installed on the pedestal.
One side of described horizontal survey bar two ends and circular arc measurement bay all is equiped with the anchor clamps that are used to be connected and fixed vertical bar on the support, is equiped with horizontal adjustment bolt on the described anchor clamps.
Described fixed support bottom is equiped with magnet base.
A kind of turbine blade blade profile measurement method may further comprise the steps,
1) aforesaid turbine blade blade profile measurement device is installed;
A, on tested blade, retouch out the molded lines to be checked of section to be checked;
B, in tested blade both sides mounting and fixing bracket;
C, be benchmark, horizontal survey bar and circular arc measurement bay are installed on the fixed support with molded lines to be checked;
2) equipment adjustment;
A, the horizontal survey bar is adjusted to level, makes the first range finding probe be tangential movement along moving of horizontal survey bar;
B, the line of circular arc reference point P on the circular arc measurement bay and center of circle O is adjusted to level, make the second range finding probe along the movement locus of circular arc measurement bay corresponding to the tangent line N at P point place perpendicular to horizontal line;
3) measure also record data;
A, retouch out a plurality of measurement points on molded lines to be checked, a plurality of measurement points are divided into molded lines district, the back side, front molded lines district, head molded lines district and afterbody molded lines district, adjacent two molded lines districts are the public-measurement point with a measurement point at least;
B, each measurement point and record data by first range finding molded lines district, the probe measurement back side and front molded lines district are by each measurement point and the record data in the second range finding probe measurement head molded lines district and afterbody molded lines district;
4) draw blade profile;
A, the tested vacuum side of blade molded lines of drafting are drawn horizontal line earlier, are benchmark with the horizontal line, retouch out each measurement point position according to the data that the first range finding probe records above tested blade, obtain tested vacuum side of blade molded lines with smooth curve connection each point;
B, the tested face of blade molded lines of drafting are drawn horizontal line earlier, are benchmark with the horizontal line, retouch out each measurement point position according to the data that the first range finding probe records below tested blade, obtain tested face of blade molded lines with smooth curve connection each point;
C, the tested leaf head molded lines of drafting, draw the circular motion trajectory of the second range finding probe earlier, determine the center of circle of circular motion trajectory, and horizontal line is drawn in the center of circle of crossing the circular motion trajectory, with circular motion trajectory and its center of circle is benchmark, retouch out each measurement point position of tested leaf head according to the second range finding probe in the data that tested leaf head records, connect each point with smooth curve and obtain tested leaf head molded lines;
D, the tested blade afterbody molded lines of drafting, draw the circular motion trajectory of the second range finding probe earlier, determine the center of circle of circular motion trajectory, and horizontal line is drawn in the center of circle of crossing the circular motion trajectory, with circular motion trajectory and its center of circle is benchmark, retouch out each measurement point position of tested blade afterbody according to the second range finding probe in the data that tested blade afterbody records, connect each point with smooth curve and obtain tested blade afterbody molded lines;
E, the public-measurement point on each segment type line is overlapped, obtain the molded lines of complete tested blade section to be checked.
During step c in carrying out described step 1), in tested blade above and below a horizontal survey bar is installed respectively, at tested leaf head and afterbody a circular arc measurement bay is installed respectively, simultaneously back side molded lines district, front molded lines district, head molded lines district and afterbody molded lines district is measured;
Perhaps during the step c in carrying out described step 1), the horizontal survey bar is installed above tested blade, at tested leaf head the circular arc measurement bay is installed, after finishing the measurement in molded lines district, the back side and head molded lines district, the horizontal survey bar is installed on tested blade below, the circular arc measurement bay is installed on tested blade afterbody, finishes the measurement in molded lines district, front and afterbody molded lines district again;
Perhaps during the step c in carrying out described step 1), the horizontal survey bar is installed below tested blade, at tested blade afterbody the circular arc measurement bay is installed, after finishing the measurement in molded lines district, front and afterbody molded lines district, the horizontal survey bar is installed on tested blade top, the circular arc measurement bay is installed on tested leaf head, finishes the measurement in molded lines district, the back side and head molded lines district again.
Compared with prior art, the invention has the advantages that:
Turbine blade blade profile measurement device of the present invention, simple and reliable for structure, it is little to take up room, and is convenient to measure at unit maintenance scene, hydroelectric power plant; The curvature of tested leaf head and afterbody is bigger, and the form that the second range finding probe adopts circular arc to move can improve the convenience of measuring accuracy and survey measurements greatly; Simultaneously, by the profile of the tested blade of range finding probe measurement, measuring accuracy and efficiency of measurement are all guaranteed; Requirement to measurement environment is also very low, even be not also accurately to measure under the good environmental baseline in light condition such as pipelines; Amount of parts is few, and is easy to loading and unloading, be easy to carry, and equipment product cost and maintenance cost are low, and be easy to utilize.Be equiped with level meter on the horizontal survey bar, conveniently the horizontal survey bar carried out leveling, the circular arc measurement bay is provided with the leveling face that is parallel to center of circle O and circular arc reference point P line, is equiped with level meter on the leveling face, conveniently the circular arc measurement bay is carried out leveling.Be equiped with sprocket wheel chain drives structure on the horizontal survey bar, just can move to any position by drawing wheel control first range finding to pop one's head in the horizontal sliding seat very easily at horizontal survey bar one end, easy to operate, help improving efficiency of measurement.The present invention also can offer the L-shaped rotating shaft mounting groove in cross section on horizontal survey bar top, and on the rotating shaft mounting groove of driven sprocket one side, offer the voussoir socket, in the voussoir socket, insert the chain tension voussoir, can drive the rotating shaft of driven sprocket away from drive sprocket by compressing the chain tension voussoir, make drive sprocket and driven sprocket with chain tension, thereby the horizontal sliding seat is remained on accurately on the position, help further improving measuring accuracy.Easy to adjust, the accurate positioning of circular arc measurement bay, can regulate the pedestal and second position of range finding probe on the circular arc measurement bay by the hand rotation driven wheel, when not needing to move the second range finding probe positions, supporting spring is pressed in ball automatically and supports on the track by supporting plate, make pedestal keep stable, thereby help further improving measuring accuracy; The mobile pedestal and second range finding be during probe positions, keeps bar can make pedestal and support plate keeping moving consistent, and it is impaired to avoid supporting spring.One side of horizontal survey bar two ends and circular arc measurement bay all is equiped with the anchor clamps that are used to be connected and fixed vertical bar on the support, is equiped with horizontal adjustment bolt on the anchor clamps, is convenient to carry out the horizontal adjustment operation.The fixed support bottom is equiped with magnet base, and at unit maintenance scene, hydroelectric power plant, fixed support might need to be placed on the irony basis with certain slope, and magnet base helps fixed support and form stable location on the irony basis.Turbine blade blade profile measurement method of the present invention is simple and reliable, efficiency of measurement is high, measuring accuracy is high, and is very convenient to the processing of measurement data, easy to utilize.
Description of drawings
Fig. 1 is a main TV structure synoptic diagram of the present invention.
Fig. 2 is the enlarged drawing of horizontal survey bar, circular arc measurement bay and fixed support junction.
Fig. 3 is the A-A cut-open view of Fig. 2.
Fig. 4 is the B-B cut-open view of Fig. 2.
Fig. 5 is that the C of Fig. 4 is to view.
Fig. 6 is the broken section enlarged drawing at chain tension voussoir place.
Fig. 7 is that the blade profile of tested blade is drawn synoptic diagram.
Each label is represented among the figure:
1, horizontal survey bar; 2, circular arc measurement bay; 3, fixed support; 4, the first range finding probe; 5, the second range finding probe; 6, tested blade; 7, level meter; 8, anchor clamps; 9, horizontal adjustment bolt; 10, magnet base; 11, drive sprocket; 12, driven sprocket; 13, chain; 14, horizontal sliding seat; 15, draw wheel; 16, rotating shaft mounting groove; 17, voussoir socket; 18, chain tension voussoir; 21, leveling face; 22, rack-track; 23, circular arc slip base; 24, support track; 121, rotating shaft; 231, pedestal; 232, driven wheel; 233, support plate; 234, support spring; 235, ball; 236, keep bar.
Embodiment
Fig. 1 to Fig. 6 shows a kind of turbine blade blade profile measurement device embodiment of the present invention, this measurement mechanism comprises horizontal survey bar 1, circular arc measurement bay 2 and a pair of fixed support 3, horizontal survey bar 1 two ends connect a fixed support 3 respectively, circular arc measurement bay 2 is installed on the fixed support 3, horizontal survey bar 1 is provided with the first range finding probe 4 and the horizontal shift graduated scale that can move horizontally along horizontal survey bar 1, circular arc measurement bay 2 is provided with the second range finding probe 5 and the angle index scale that can move along the circular arc of circular arc measurement bay 2, the center of circle O of the second range finding probe, 5 circular motion tracks drops in the xsect of tested blade 6, circular arc measurement bay 2 is provided with circular arc reference point P, and the line of center of circle O and circular arc reference point P is horizontally disposed with.The curvature of tested blade 6 heads and afterbody is bigger, the form that the second range finding probe 5 adopts circular arc to move, the first range finding probe, the 4 and second range finding probe 5 is all selected laser ranging probe for use, can improve the convenience of measuring accuracy and survey measurements greatly, horizontal survey bar 1 and circular arc measurement bay 2 are equipped with two in the present embodiment, two horizontal survey bars 1 are divided into the both sides up and down of tested blade 6, two circular arc measurement bays 2 are divided into the head and the afterbody of tested blade 6, this measurement mechanism is simple and reliable for structure, it is little to take up room, be convenient to measure at unit maintenance scene, hydroelectric power plant, simultaneously, by the profile of the tested blade 6 of range finding probe measurement, measuring accuracy and efficiency of measurement are all guaranteed, requirement to measurement environment is also very low, even in light condition such as pipelines is not accurately to measure under the good environmental baseline yet, and amount of parts is few, easy to loading and unloading, be easy to carry, equipment product cost and maintenance cost are low, and be easy to utilize.
In the present embodiment, be equiped with level meter 7 on the horizontal survey bar 1, horizontal survey bar 1 two ends are equiped with the anchor clamps 8 that are used to be connected and fixed vertical bar on the support 3, circular arc measurement bay 2 is provided with the leveling face 21 that is parallel to center of circle O and circular arc reference point P line, be equiped with level meter 7 on the leveling face 21, one side of circular arc measurement bay 2 also is equiped with the anchor clamps 8 that are used to be connected and fixed vertical bar on the support 3, all be equiped with horizontal adjustment bolt 9 on each anchor clamps 8, can carry out leveling to horizontal survey bar 1 and circular arc measurement bay 2 very easily by horizontal adjustment bolt 9 and level meter 7, lock by clamping screw again after leveling is finished.
In the present embodiment, be equiped with drive sprocket 11 on the horizontal survey bar 1, driven sprocket 12, chain 13, what horizontal sliding seat 14 and being used to drove drive sprocket 11 draws wheel 15, drive sprocket 11 and driven sprocket 12 are divided into horizontal survey bar 1 two ends, chain 13 is set around on drive sprocket 11 and the driven sprocket 12, the two ends of chain 13 are connected on the horizontal sliding seat 14, draw wheel 15 and 11 coaxial connections of drive sprocket, the first range finding probe 4 is installed on the horizontal sliding seat 14, when tested blade 6 has bigger width, the operator can't directly push the first range finding probe, 4 middle parts to tested blade 6, structure in the present embodiment can be very easily at horizontal survey bar 1 one ends, by drawing the wheel 15 controls first range finding probe 4 to move to any position with horizontal sliding seat 14, easy to operate, help further improving efficiency of measurement.Horizontal survey bar 1 top offers the L-shaped rotating shaft mounting groove 16 in cross section, offer voussoir socket 17 on the rotating shaft mounting groove 16 of driven sprocket 12 1 sides, be equiped with chain tension voussoir 18 in the voussoir socket 17, can drive the rotating shaft 121 of driven sprocket 12 away from drive sprocket 11 by compressing chain tension voussoir 18, make drive sprocket 11 and driven sprocket 12 with chain 13 tensionings, thereby horizontal sliding seat 14 is remained on accurately on the position, help further improving measuring accuracy.Can also replace with motor in other embodiments and draw wheel 15.
In the present embodiment, circular arc measurement bay 2 is provided with the rack-track 22 of circular arc and supports track 24, be equiped with circular arc slip base 23 on the rack-track 22, circular arc slip base 23 comprises pedestal 231, driven wheel 232, support plate 233, support spring 234, ball 235 and maintenance bar 236, driven wheel 232 is installed on the pedestal 231 and with rack-track 22 and meshes, supporting spring 234 is held in and supports between plate 233 and the pedestal 231, ball 235 is located at and is supported plate 233 and support between the track 24, keep bar 236 1 ends to be fixed on the pedestal 231, the other end is placed in the through hole that supports on the plate 233, the second range finding probe 5 is installed on the pedestal 231, hand rotation driven wheel 232 can be regulated the pedestal 231 and second position of range finding probe 5 on circular arc measurement bay 2, when not needing to move the second range finding probe, 5 positions, supporting spring 234 is pressed in ball 235 automatically and supports on the track 24 by supporting plate 233, make pedestal 231 keep stable, thereby help further improving measuring accuracy; When mobile pedestal 231 and the second range finding probe, 5 positions, keep bar 236 can make pedestal 231 and support plate 233 keeping moving consistent, it is impaired to avoid supporting spring 234.
In the present embodiment, fixed support 3 bottoms are equiped with magnet base 10, at unit maintenance scene, hydroelectric power plant, fixed support 3 might need to be placed on the irony basis with certain slope, and magnet base 10 helps fixed support 3 and form stable location on the irony basis.
A kind of turbine blade blade profile measurement method embodiment, this measuring method may further comprise the steps,
1) installs as the turbine blade blade profile measurement device among the above-mentioned embodiment;
A, on tested blade 6, retouch out the molded lines to be checked of section to be checked;
B, in tested blade 6 both sides mounting and fixing brackets 3;
C, be benchmark with molded lines to be checked, horizontal survey bar 1 and circular arc measurement bay 2 are installed on the fixed support 3, present embodiment is in tested blade 6 above and belows a horizontal survey bar 1 to be installed respectively, at tested blade 6 heads and afterbody a circular arc measurement bay 2 is installed respectively;
2) equipment adjustment;
A, according to the reading of level meter 7 on the horizontal survey bar 1, horizontal survey bar 1 is adjusted to level by horizontal adjustment bolt 9, make the first range finding probe 4 be tangential movement along moving of horizontal survey bar 1;
B, according to the reading of level meter 7 on the circular arc measurement bay 2, leveling face 21 is adjusted to level by horizontal adjustment bolt 9, the line that makes circular arc reference point P on the circular arc measurement bay 2 and center of circle O is for being horizontally disposed with, the second range finding probe 5 along the movement locus of circular arc measurement bay 2 corresponding to the tangent line N at P point place perpendicular to horizontal line;
3) measure also record data;
A, on molded lines to be checked, retouch out a plurality of measurement points, a plurality of measurement points are divided into molded lines district, the back side, molded lines district, front, head molded lines district and afterbody molded lines district, adjacent two molded lines districts are the public-measurement point with a measurement point at least, wherein the measurement point in back side molded lines district is followed successively by A1 from leaf head to blade afterbody, A2, A3 ... An, the measurement point in molded lines district, front is followed successively by B1 from leaf head to blade afterbody, B2, B3 ... Bn, the measurement point in head molded lines district is followed successively by C1 from vacuum side of blade to face of blade, C2, C3 ... Cn, the measurement point in afterbody molded lines district is followed successively by D1 from vacuum side of blade to face of blade, D2, D3 ... Dn, A1 and C1 are the public-measurement point in molded lines district, the back side and head molded lines district, An and D1 are the public-measurement point in molded lines district, the back side and afterbody molded lines district, B1 and Cn are the public-measurement point in molded lines district, front and head molded lines district, and Bn and Dn are the public-measurement point in molded lines district, front and afterbody molded lines district;
B, measure each measurement point in molded lines districts, the back side and front molded lines district by the first range finding probe 4, and write down the first range finding probe, 4 range data that record and the position data of the first range finding probe 4 on the horizontal line direction, measure each measurement point in head molded lines districts and afterbody molded lines district by the second range finding probe 5, and write down second range finding probe 5 range data that record and the second range finding probe 5 with respect to horizontal angle-data;
4) draw blade profile, as shown in Figure 7;
A, tested blade 6 back side molded lines of drafting are drawn horizontal line earlier, are benchmark with the horizontal line, retouch out each measurement point position according to the first range finding probe, 4 data that record above tested blade 6, obtain tested blade 6 back side molded lines with smooth curve connection each point;
B, the tested blade 6 front molded lines of drafting are drawn horizontal line earlier, are benchmark with the horizontal line, retouch out each measurement point position according to the first range finding probe, 4 data that record below tested blade 6, obtain tested blade 6 front molded lines with smooth curve connection each point;
C, the tested blade 6 head molded lines of drafting, draw the circular motion trajectory of the second range finding probe 5 earlier, determine the center of circle of circular motion trajectory, and horizontal line is drawn in the center of circle of crossing the circular motion trajectory, with circular motion trajectory and its center of circle is benchmark, retouch out each measurement point position of tested blade 6 heads according to the second range finding probe 5 in the data that tested blade 6 heads record, connect each point with smooth curve and obtain tested blade 6 head molded lines;
D, the tested blade 6 afterbody molded lines of drafting, draw the circular motion trajectory of the second range finding probe 5 earlier, determine the center of circle of circular motion trajectory, and horizontal line is drawn in the center of circle of crossing the circular motion trajectory, with circular motion trajectory and its center of circle is benchmark, retouch out each measurement point position of tested blade 6 afterbodys according to the second range finding probe 5 in the data that tested blade 6 afterbodys record, connect each point with smooth curve and obtain tested blade 6 afterbody molded lines;
E, the public-measurement point on each segment type line is overlapped, obtain the molded lines of complete tested blade 6 sections to be checked.
In other embodiments, can be when the step c in carrying out described step 1), horizontal survey bar 1 is installed above tested blade 6, at tested blade 6 heads circular arc measurement bay 2 is installed, after finishing the measurement in molded lines district, the back side and head molded lines district, horizontal survey bar 1 is installed on tested blade 6 belows, circular arc measurement bay 2 is installed on tested blade 6 afterbodys, finish the measurement in molded lines district, front and afterbody molded lines district again;
Perhaps during the step c in carrying out described step 1), horizontal survey bar 1 is installed below tested blade 6, at tested blade 6 afterbodys circular arc measurement bay 2 is installed, after finishing the measurement in molded lines district, front and afterbody molded lines district, horizontal survey bar 1 is installed on tested blade 6 tops, circular arc measurement bay 2 is installed on tested blade 6 heads, finishes the measurement in molded lines district, the back side and head molded lines district again.
Turbine blade blade profile measurement method of the present invention is simple and reliable, efficiency of measurement is high, measuring accuracy is high, and is very convenient to the processing of measurement data, easy to utilize.
Above-mentioned is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.Though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention.Any those of ordinary skill in the art under the situation that does not break away from the technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement that technical solution of the present invention is made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention, all should drop in the scope of technical solution of the present invention protection any simple modification, equivalent variations and modification that above embodiment did according to the technology of the present invention essence.
Claims (10)
1. turbine blade blade profile measurement device, it is characterized in that: comprise horizontal survey bar (1), circular arc measurement bay (2) and a pair of fixed support (3), described horizontal survey bar (1) two ends connect a fixed support (3) respectively, described circular arc measurement bay (2) is installed on the fixed support (3), be equiped with the first range finding probe (4) that can move horizontally along horizontal survey bar (1) on the described horizontal survey bar (1), be equiped with the second range finding probe (5) that can move on the described circular arc measurement bay (2) along the circular arc of circular arc measurement bay (2), the center of circle O of described second range finding probe (5) circular motion track drops in the xsect of tested blade (6), described circular arc measurement bay (2) is provided with circular arc reference point P, and the line of described center of circle O and described circular arc reference point P is horizontally disposed with.
2. turbine blade blade profile measurement device according to claim 1, it is characterized in that: be equiped with level meter (7) on the described horizontal survey bar (1), described circular arc measurement bay (2) is provided with the leveling face (21) that is parallel to center of circle O and circular arc reference point P line, is equiped with level meter (7) on the described leveling face (21).
3. turbine blade blade profile measurement device according to claim 1 and 2, it is characterized in that: be equiped with drive sprocket (11) on the described horizontal survey bar (1), driven sprocket (12), chain (13), what horizontal sliding seat (14) and being used to drove drive sprocket (11) draws wheel (15), described drive sprocket (11) and driven sprocket (12) are divided into horizontal survey bar (1) two ends, described chain (13) is set around on described drive sprocket (11) and the driven sprocket (12), the two ends of described chain (13) are connected on the described horizontal sliding seat (14), described drawing wheel (15) and coaxial connection of drive sprocket (11), the described first range finding probe (4) is installed on the described horizontal sliding seat (14).
4. turbine blade blade profile measurement device according to claim 3, it is characterized in that: described horizontal survey bar (1) top offers the L-shaped rotating shaft mounting groove (16) in cross section, the rotating shaft mounting groove (16) of described driven sprocket (12) one sides offers voussoir socket (17), is equiped with the rotating shaft (121) that is used to drive driven sprocket (12) the chain tension voussoir (18) away from drive sprocket (11) in the described voussoir socket (17).
5. turbine blade blade profile measurement device according to claim 1 and 2, it is characterized in that: described circular arc measurement bay (2) is provided with the rack-track (22) of circular arc and supports track (24), be equiped with circular arc slip base (23) on the described rack-track (22), described circular arc slip base (23) comprises pedestal (231), driven wheel (232), support plate (233), support spring (234), ball (235) and maintenance bar (236), described driven wheel (232) is installed in described pedestal (231) and goes up and mesh with described rack-track (22), the described spring (234) that supports is held in described supporting between plate (233) and the pedestal (231), described ball (235) is located at and is supported plate (233) and described supporting between the track (24), described maintenance bar (236) one ends are fixed on the described pedestal (231), the other end is placed in the described through hole that supports on the plate (233), and the described second range finding probe (5) is installed on the pedestal (231).
6. turbine blade blade profile measurement device according to claim 4, it is characterized in that: described circular arc measurement bay (2) is provided with the rack-track (22) of circular arc and supports track (24), be equiped with circular arc slip base (23) on the described rack-track (22), described circular arc slip base (23) comprises pedestal (231), driven wheel (232), support plate (233), support spring (234), ball (235) and maintenance bar (236), described driven wheel (232) is installed in described pedestal (231) and goes up and mesh with described rack-track (22), the described spring (234) that supports is held in described supporting between plate (233) and the pedestal (231), described ball (235) is located at and is supported plate (233) and described supporting between the track (24), described maintenance bar (236) one ends are fixed on the described pedestal (231), the other end is placed in the described through hole that supports on the plate (233), and the described second range finding probe (5) is installed on the pedestal (231).
7. turbine blade blade profile measurement device according to claim 6, it is characterized in that: a side of described horizontal survey bar (1) two ends and circular arc measurement bay (2) all is equiped with and is used to be connected and fixed the anchor clamps (8) that support (3) is gone up vertical bar, is equiped with horizontal adjustment bolt (9) on the described anchor clamps (8).
8. turbine blade blade profile measurement device according to claim 7 is characterized in that: described fixed support (3) bottom is equiped with magnet base (10).
9. turbine blade blade profile measurement method is characterized in that: may further comprise the steps,
1) installs as each described turbine blade blade profile measurement device in the claim 1 to 8;
A, on tested blade (6), retouch out the molded lines to be checked of section to be checked;
B, in tested blade (6) both sides mounting and fixing brackets (3);
C, be benchmark, horizontal survey bar (1) and circular arc measurement bay (2) are installed on the fixed support (3) with molded lines to be checked;
2) equipment adjustment;
A, horizontal survey bar (1) is adjusted to level, making the first range finding probe (4) is tangential movement along the motion of horizontal survey bar (1);
B, the line of circular arc reference point P on the circular arc measurement bay (2) and center of circle O is adjusted to level, make the second range finding probe (5) along the movement locus of circular arc measurement bay (2) corresponding to the tangent line N at P point place perpendicular to horizontal line;
3) measure also record data;
A, retouch out a plurality of measurement points on molded lines to be checked, a plurality of measurement points are divided into molded lines district, the back side, front molded lines district, head molded lines district and afterbody molded lines district, adjacent two molded lines districts are the public-measurement point with a measurement point at least;
B, measure each measurement point and the record data in molded lines district, the back side and front molded lines district, measure each measurement point and the record data in head molded lines district and afterbody molded lines district by the second range finding probe (5) by the first range finding probe (4);
4) draw blade profile;
A, draw tested blade (6) back side molded lines, draw horizontal line earlier, with the horizontal line is benchmark, retouches out each measurement point position according to the first range finding probe (4) in the data that tested blade (6) top records, and connects each point with smooth curve and obtains tested blade (6) back side molded lines;
B, draw tested blade (6) front molded lines, draw horizontal line earlier, with the horizontal line is benchmark, retouches out each measurement point position according to the first range finding probe (4) in the data that tested blade (6) below records, and connects each point with smooth curve and obtains tested blade (6) front molded lines;
C, draw tested blade (6) head molded lines, draw the circular motion trajectory of the second range finding probe (5) earlier, determine the center of circle of circular motion trajectory, and horizontal line is drawn in the center of circle of crossing the circular motion trajectory, with circular motion trajectory and its center of circle is benchmark, retouch out each measurement point position of tested blade (6) head according to the data that the second range finding probe (5) records at tested blade (6) head, connect each point with smooth curve and obtain tested blade (6) head molded lines;
D, draw tested blade (6) afterbody molded lines, draw the circular motion trajectory of the second range finding probe (5) earlier, determine the center of circle of circular motion trajectory, and horizontal line is drawn in the center of circle of crossing the circular motion trajectory, with circular motion trajectory and its center of circle is benchmark, retouch out each measurement point position of tested blade (6) afterbody according to the data that the second range finding probe (5) records at tested blade (6) afterbody, connect each point with smooth curve and obtain tested blade (6) afterbody molded lines;
E, the public-measurement point on each segment type line is overlapped, obtain the molded lines of complete tested blade (6) section to be checked.
10. turbine blade blade profile measurement method according to claim 9, it is characterized in that: during step c in carrying out described step 1), in tested blade (6) above and below a horizontal survey bar (1) is installed respectively, at tested blade (6) head and afterbody a circular arc measurement bay (2) is installed respectively, simultaneously back side molded lines district, front molded lines district, head molded lines district and afterbody molded lines district is measured;
Perhaps during the step c in carrying out described step 1), in tested blade (6) top horizontal survey bar (1) is installed, at tested blade (6) head circular arc measurement bay (2) is installed, after finishing the measurement in molded lines district, the back side and head molded lines district, horizontal survey bar (1) is installed on tested blade (6) below, circular arc measurement bay (2) is installed on tested blade (6) afterbody, finishes the measurement in molded lines district, front and afterbody molded lines district again;
Perhaps during the step c in carrying out described step 1), in tested blade (6) below horizontal survey bar (1) is installed, at tested blade (6) afterbody circular arc measurement bay (2) is installed, after finishing the measurement in molded lines district, front and afterbody molded lines district, horizontal survey bar (1) is installed on tested blade (6) top, circular arc measurement bay (2) is installed on tested blade (6) head, finishes the measurement in molded lines district, the back side and head molded lines district again.
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| CN102729181B (en) * | 2012-07-05 | 2014-10-22 | 哈尔滨工程大学 | Cycloid water turbine installation retainer with measuring function |
| CN103759697B (en) * | 2014-01-27 | 2016-09-07 | 国家电网公司 | A kind of leaf surveying instrument of rotary wheel of water turbine |
| CN105817997B (en) * | 2016-03-28 | 2018-01-02 | 国核工程有限公司 | A kind of curved surfaces ozzle polishing survey tool and its application method |
| CN112067301B (en) * | 2020-09-10 | 2022-05-06 | 宁波大学科学技术学院 | S-shaped water turbine combination mode comprehensive performance test experimental device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4146967A (en) * | 1977-08-15 | 1979-04-03 | The Boeing Company | Rotor blade inspection fixture |
| CN1486415A (en) * | 2000-11-10 | 2004-03-31 | 东陶机器株式会社 | Portable surface shape measurer |
| WO2006025603A1 (en) * | 2004-09-01 | 2006-03-09 | Canon Kabushiki Kaisha | Method for measuring circular shape, and method and device for measuring cylindrical shape |
| CN202216675U (en) * | 2011-09-20 | 2012-05-09 | 长沙理工大学 | Device for measuring blade profile of hydraulic turbine blade |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08128813A (en) * | 1994-10-28 | 1996-05-21 | Central Japan Railway Co | Apparatus for detecting wear of trolley wire |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4146967A (en) * | 1977-08-15 | 1979-04-03 | The Boeing Company | Rotor blade inspection fixture |
| CN1486415A (en) * | 2000-11-10 | 2004-03-31 | 东陶机器株式会社 | Portable surface shape measurer |
| WO2006025603A1 (en) * | 2004-09-01 | 2006-03-09 | Canon Kabushiki Kaisha | Method for measuring circular shape, and method and device for measuring cylindrical shape |
| CN202216675U (en) * | 2011-09-20 | 2012-05-09 | 长沙理工大学 | Device for measuring blade profile of hydraulic turbine blade |
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