CN113959306A - Adjustable stator blade installation angle measuring device and method and axial-flow type air compressor - Google Patents
Adjustable stator blade installation angle measuring device and method and axial-flow type air compressor Download PDFInfo
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- CN113959306A CN113959306A CN202111056511.1A CN202111056511A CN113959306A CN 113959306 A CN113959306 A CN 113959306A CN 202111056511 A CN202111056511 A CN 202111056511A CN 113959306 A CN113959306 A CN 113959306A
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- 238000009434 installation Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005259 measurement Methods 0.000 abstract description 24
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/542—Bladed diffusers
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- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an adjustable stator blade installation angle measuring device, a measuring method and an axial-flow compressor, wherein the device comprises a positioning base, a measuring plate, a fastener and a universal angle gauge, the positioning base comprises a bottom plate and a supporting column fixed on the bottom plate, and the bottom plate is provided with a positioning part for positioning the bottom of a casing, so that the axial lead of the positioned casing is perpendicular to the plane of the bottom plate; the measuring plate can be rotatably arranged at the top end of the supporting column around the axial lead of the case on the positioning part; the universal angle gauge is installed at one end of the measuring plate, the fastener is used for locking the measuring plate on the supporting column, the measuring plate is locked after the ruler for adjusting the universal angle gauge is attached to the air inlet and outlet edges of the stator blade, and therefore the installation angle of the stator blade is read through the universal angle gauge. This measuring device can guarantee that stator blade installation angle is accurate, promotes the measurement of stator blade installation angle efficiency, damages the part of being surveyed when avoiding measuring.
Description
Technical Field
The invention relates to the technical field of assembly measurement of aero-engines, in particular to an adjustable stator blade installation angle measuring device, a measuring method using the measuring device and an axial-flow compressor assembled after measurement by using the measuring device.
Background
As shown in fig. 1, an axial flow compressor is an important component of a scroll type aircraft engine, and includes a casing 10 and a plurality of stator blades 20 mounted on an inner wall of the casing 10 in an annular array. The stator blades 20 can be adjusted to change the air flow entering the engine, and the axial-flow compressor can well meet the requirement on margin when the engine works stably by adopting the method of adjusting the stator blades 20. Wherein, each stator blade 20 is provided with a rocker arm, the stator blade 20 and the rocker arm are locked and fixed on the casing 10 by a self-locking nut and a locking plate through threads on a shaft neck, and the other end of each rocker arm is arranged on a linkage ring through a pin. The stator blades 20 are integrally adjusted through the linkage ring during the operation of the engine, and the assembly needs to ensure that the installation angle of each stator blade 20 is consistent (only +/-50 'deviation is allowed), and the average installation angle of the whole circle of stator blades 20 is only +/-30' deviation. The installation angle of the stator blade 20 easily affects the assembly efficiency and the assembly quality of the engine on one hand, and determines whether the performance of the engine reaches the standard on the other hand. At present, three coordinates are adopted for measuring the installation angle, so that the measurement efficiency is severely restricted, and parts are easily knocked and damaged in the process of transferring work and measuring. It is therefore necessary to improve the stator blade 20 installation angle measurement method.
Disclosure of Invention
The invention provides an adjustable stator blade installation angle measuring device, which is used for ensuring the stator blade installation angle to be accurate and correct, improving the measurement efficiency of the stator blade installation angle and avoiding damage to a measured component during measurement.
The invention provides an adjustable stator blade installation angle measuring device, which is used for measuring the installation angle of a stator blade on the inner wall of a casing, and comprises a positioning base, a measuring plate, a fastener and a universal angle gauge, wherein the positioning base comprises a bottom plate and a supporting column fixed on the bottom plate, and the bottom plate is provided with a positioning part for positioning the bottom of the casing, so that the axial lead of the positioned casing is vertical to the plane of the bottom plate; the measuring plate can be rotatably arranged at the top end of the supporting column around the axial lead of the case on the positioning part; the universal angle gauge is installed at one end of the measuring plate, the fastener is used for locking the measuring plate on the supporting column, the measuring plate is locked after the ruler for adjusting the universal angle gauge is attached to the air inlet and outlet edges of the stator blade, and therefore the installation angle of the stator blade is read through the universal angle gauge.
Furthermore, the positioning part adopts a positioning disc matched with the hole in the bottom of the case, and an annular seam allowance is arranged at the junction of the positioning disc and the bottom plate around the positioning disc so as to realize positioning by sleeving the bottom of the case on the periphery of the positioning disc.
Furthermore, the support column is a cylindrical support welded on the positioning disc, and the axis of the cylindrical support coincides with the axis of the positioning disc.
Furthermore, the cylindrical support is a hollow cylindrical support, a rotating shaft is rotatably arranged in an inner hole of the hollow cylindrical support, and the measuring plate is horizontally fixed at the top end of the rotating shaft.
Furthermore, the measuring plate is welded on the rotating shaft, and the rotating shaft is in clearance fit with the inner hole of the hollow cylindrical support.
Further, omnipotent angle gauge includes ruler, base chi, main scale, vernier scale, fixture block, braking part and adjusting nut, and the main scale is the circular arc piece, the front of circular arc piece is equipped with the main scale, and the base chi is fixed in the one end of circular arc piece, the back of circular arc piece can be followed through adjusting nut the circular arc direction of circular arc piece is provided with the sliding block with sliding, on the vernier scale is fixed in the sliding block, the front of vernier scale be equipped with main scale matched with vernier scale, braking part is used for preventing the sliding block to slide, extends the one end at circular arc piece center on the fixture block is fixed in the sliding block, the ruler can be fixed in on the fixture block along ruler length direction adjusting position through holding the bolt.
Furthermore, a fixing groove is formed in one end of the measuring plate and used for accommodating a base ruler of the universal angle gauge, the base ruler is positioned in the fixing groove through a positioning pin, the universal angle gauge takes the axial lead of a casing on the positioning portion as a measuring center, and the universal angle gauge is fixed in the fixing groove on the measuring plate through a fixing bolt.
Furthermore, the fastening piece adopts a fastening bolt, an arc-shaped groove is formed in the measuring plate around the rotating axis of the measuring plate, the arc-shaped groove corresponds to the top surface of the supporting column, a fastening screw hole correspondingly matched with the fastening bolt is formed in the top end surface of the supporting column, the fastening bolt penetrates through the arc-shaped groove and is in threaded connection with the fastening screw hole, and the end cap of the fastening bolt abuts against the measuring plate so as to fix the measuring plate.
The invention also provides a measuring method of the device for measuring the installation angle of the adjustable stator blade, which comprises the following steps: placing the casing on the positioning part to position the casing, so that the axis of the positioned casing is superposed with the axis of the support column;
fixing a universal angle gauge on the measuring plate, so that the universal angle gauge takes the shaft axis of the case on the positioning part as a measuring center;
calibrating a zero position of the universal angle gauge, and rotating the measuring plate to drive the universal angle gauge to correspondingly rotate to a position above a space on one side of a stator blade to be measured;
adjusting a ruler of a universal angle gauge to enable the ruler to descend to a space on one side of the stator blade to be measured, enabling the ruler to be tightly attached to the air inlet and outlet edges of the stator blade to be measured through adjusting nuts of the universal angle gauge, and then locking a measuring plate on a supporting column, so that the mounting angle of the stator blade can be read through the universal angle gauge;
after the installation angle of one stator blade is measured, the straight ruler is made to ascend to the position above the stator blade by adjusting the straight ruler of the universal angle gauge, the rotary measuring plate drives the universal angle gauge to correspondingly rotate to the position above the space on one side of the stator blade at the next position, and the installation angle of each stator blade is measured in the corresponding circulating step.
The invention also provides an axial-flow compressor, which comprises a casing and stator blades arranged on the inner wall of the casing, wherein the installation angle of the stator blades is obtained by using the adjustable stator blade installation angle measuring device.
The invention has the following beneficial effects:
according to the device for measuring the installation angle of the adjustable stator blade, the casing is positioned by arranging the casing on the positioning part, so that the axis of the positioned casing is perpendicular to the plane of the bottom plate, the positioning operation of the casing is easy to realize, and the position of the casing is fixed during measurement. The rotatable measuring plate is arranged on the supporting column on the bottom plate, so that the universal angle gauge on the measuring plate can rotate around the axial lead of the casing to the position of each stator blade for measurement, and each stator blade is guaranteed to take the axial lead of the casing as a measuring reference. The measuring plate is locked on the supporting column through the fastener, the straight ruler of the universal angle gauge is tightly attached to the air inlet and exhaust edges of the stator blade when the mounting angle of the stator blade is read, and the mounting angle of the stator blade can be read more accurately, so that the assembling quality of the engine is improved, and the requirement on margin during stable operation of the engine is met. After one stator blade is measured, the fastener is loosened, so that the measuring plate is in a rotatable state, the adjusting ruler is lifted above the stator blade, and the universal angle gauge is rotated to the measuring position of the next stator blade through the measuring plate to measure the angle. So can measure the installation angle of each stator blade in batches, easy operation is convenient, damages the part of being surveyed when avoiding measuring, promotes the measurement efficiency to stator blade installation angle. Practice proves that after the adjustable stator blade installation angle measuring device is adopted, the assembly and measurement period is prolonged from 1 day to 2.5 hours at present, and the working efficiency is greatly improved. Personnel configuration is reduced to 1 person from the original 2 persons assembly, measurement, has promoted personnel utilization ratio.
By adopting the measuring method, the mounting angle of each stator blade can be measured in batches, the operation is simple and convenient, the damage to the measured part during measurement can be avoided, and the measuring efficiency of the mounting angle of the stator blades is improved. Practice proves that by adopting the measuring method, the assembling and measuring period is improved from the original 1 day to the current 2.5 hours, and the working efficiency is greatly improved. Personnel configuration is reduced to 1 person from the original 2 persons assembly, measurement, has promoted personnel utilization ratio.
The axial-flow type compressor adopts the adjustable stator blade installation angle measuring device to measure the installation angle of the stator blade, can guarantee that the installation angle of the stator blade is accurate, promotes the measurement efficiency of the installation angle of the stator blade, avoids damaging the measured part during measurement, can guarantee that the assembly is qualified once, and improves the assembly efficiency and the assembly quality of the axial-flow type compressor.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic cross-sectional view of an axial flow compressor of the present invention;
FIG. 2 is a schematic cross-sectional view of an adjustable stator blade installation angle measuring device according to the present invention;
FIG. 3 is a schematic front view of a universal angle gauge of the adjustable stator blade mounting angle measuring device of the present invention;
FIG. 4 is a schematic front view of a measuring plate of the adjustable stator blade installation angle measuring apparatus according to the present invention;
FIG. 5 is a schematic sectional view showing the structure of the adjustable stator blade installation angle measuring device according to the present invention in use;
fig. 6 is a partial cross-sectional structural view taken along line C-C of fig. 5.
Illustration of the drawings: the universal angle gauge comprises a casing 10, a stator blade 20, a positioning base 1, a measuring plate 2, a fastening piece 3, a universal angle gauge 4, a bottom plate 11, a supporting column 12, a positioning part 13, a straight ruler 41, an annular spigot 14, a rotating shaft 5, a base ruler 42, a main ruler 44, a vernier ruler 45, a fixture block 46, a braking part 47, an adjusting nut 48, a sliding block 49, a clamping bolt 40, a shaft hole 22, a fixing groove 23, a positioning pin 43, a threaded hole 24, a fixing bolt 25, an arc-shaped groove 21, a fastening screw hole 120, an end cap 31, a smooth section 32, a screw section 33 and a reference measuring section S.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
As shown in fig. 2, an embodiment of the present invention provides an adjustable stator blade installation angle measuring apparatus for measuring an installation angle of a stator blade 20 on an inner wall of a casing 10. The adjustable stator blade installation angle measuring device comprises a positioning base 1, a measuring plate 2, a fastening piece 3 and a universal angle gauge 4. The positioning base 1 includes a bottom plate 11 and a supporting column 12 fixed on the bottom plate 11. The bottom plate 11 has a positioning portion 13 for positioning the bottom of the casing 10, so that the axis of the positioned casing 10 is perpendicular to the plane of the bottom plate 11. The measuring plate 2 is rotatably mounted on the top end of the supporting column 12 around the axis of the casing 10 on the positioning portion 13. The universal angle gauge 4 is arranged at one end of the measuring plate 2. The fastener 3 is used for locking the measuring plate 2 on the supporting column 12, so that the measuring plate 2 can be locked after the straight ruler 41 of the universal angle gauge 4 is adjusted to be attached to the air inlet and outlet edges of the stator blade 20, and the mounting angle of the stator blade 20 can be read conveniently through the universal angle gauge 4.
According to the device for measuring the installation angle of the adjustable stator blade, the casing 10 is positioned by placing the casing 10 on the positioning part 13, so that the axis of the positioned casing 10 is perpendicular to the plane of the bottom plate 11, the positioning operation of the casing 10 is easy to realize, and the position of the casing 10 is ensured to be fixed during measurement. Through setting up rotatable measuring plate 2 on support column 12 on bottom plate 11 for universal angle gauge 4 on measuring plate 2 can rotate to the position of each stator blade 20 around the axial lead of casket 10 and measure, has guaranteed that each stator blade 20 all uses the axial lead of casket 10 as the measuring benchmark. The measuring plate 2 is locked on the supporting column 12 through the fastener 3, the straight ruler 41 of the universal angle gauge 4 is tightly attached to the air inlet and exhaust edges of the stator blade 20 when the mounting angle of the stator blade 20 is read, and the mounting angle of the stator blade can be read more accurately, so that the assembling quality of an engine is improved, and the requirement on margin during stable operation of the engine is met. After one stator blade 20 is measured, the fastener 3 is loosened, so that the measuring plate 2 is in a rotatable state, the straight ruler 41 is adjusted to ascend to the position above the stator blade 20, and the universal angle gauge 4 is rotated to the measuring position of the next stator blade 20 through the measuring plate 2 to measure the angle. Can measure the installation angle of each stator blade 20 like this in batches, easy operation is convenient, damages the part of being surveyed when avoiding measuring, promotes the measurement efficiency to stator blade installation angle. Practice proves that after the adjustable stator blade installation angle measuring device is adopted, the assembly and measurement period is prolonged from 1 day to 2.5 hours at present, and the working efficiency is greatly improved. Personnel configuration is reduced to 1 person from the original 2 persons assembly, measurement, has promoted personnel utilization ratio.
In this embodiment, the positioning portion 13 is a positioning disc adapted to the inner hole at the bottom of the casing 10, and an annular seam allowance 14 is formed at the boundary between the positioning disc and the bottom plate 11 around the positioning disc, so as to position the casing 10 by sleeving the bottom of the casing on the periphery of the positioning disc. By adopting the mode, the structure is simple, the operation is easy, and the positioning accuracy can be ensured. It can be understood that the positioning portion 13 is a positioning hole matched with the outer diameter of the bottom of the casing 10.
In this embodiment, the supporting column 12 is a cylindrical support welded to the positioning disk, and the axis of the cylindrical support coincides with the axis of the positioning disk. The design is convenient to process and manufacture, the cost is low, and the case 10 arranged on the positioning disc can be concentric with the cylindrical support, so that the rotatable measuring plate 2 can be arranged conveniently, and the stability of the support of the measuring plate 2 is ensured. It will be appreciated that the support columns 12 are not limited to cylindrical supports, but may be triangular, quadrangular or other polygonal supports.
In this embodiment, the cylindrical support adopts hollow cylindrical support, and rotatably install pivot 5 in hollow cylindrical support's the hole, measures the top that board 2 level was fixed in pivot 5. Alternatively, the measuring plate 2 may be fixed to the rotating shaft 5 by welding, and the rotating shaft 5 is in clearance fit with the inner hole of the hollow cylindrical support, so as to easily realize the rotating installation. It will be appreciated that it is also possible to fix the bottom end of the shaft 5 in the bore of the hollow cylindrical support, and the measuring plate 2 is rotatably mounted on the top end of the shaft 5.
As shown in fig. 3, in the present embodiment, the universal angle gauge 4 includes a straight ruler 41, a base ruler 42, a main ruler 44, a vernier 45, a latch 46, a stopper 47, and an adjusting nut 48 (as shown in fig. 6). The main scale 44 is an arc piece, the front of which is provided with main scales, and the base scale 42 is fixed at one end of the arc piece. The back of the arc sheet is provided with a sliding block 49 through an adjusting nut 48 in a sliding way along the arc direction of the arc sheet, the vernier scale 45 is fixed on the sliding block 49, and the front of the vernier scale 45 is provided with vernier scales matched with the main scales. The vernier scale 45 is slid by rotating the adjusting nut 48. The stopper 47 prevents the slide block 49 from sliding. The locking block 46 is fixed on one end of the sliding block 49 extending to the center of the circular arc piece, and the straight edge 41 is fixed on the locking block 46 through the locking bolt 40 in a manner that the position can be adjusted along the length direction of the straight edge 41.
As shown in fig. 2 and 4, in the embodiment, the measuring plate 2 is a rectangular plate, and a shaft hole 22 is formed in the middle of the rectangular plate for passing through the top end of the fixed rotating shaft 5. One end of the rectangular plate is provided with a fixing groove 23 for accommodating a base ruler 42 of the universal angle gauge 4. The base 42 is positioned in the fixing groove 23 of the rectangular plate by a positioning pin 43 (shown in fig. 6) so that the universal angle gauge 4 is centered on the axis of the casing 10 on the positioning portion 13. The one end that is equipped with fixed slot 23 on the rectangular board is seted up threaded hole 24, and threaded hole 24 internal thread connects with fixing bolt 25, and fixing bolt 25 supports on the base scale 42 in fixed slot 23 to fix universal angle gauge 4 on the rectangular board. It can be understood that the measuring plate 2 is not limited to a rectangular plate, and may be a rectangular plate or a special-shaped plate as long as it can function to support and fix the universal angle gauge 4.
In this embodiment, the fastening member 3 is a fastening bolt, the arc-shaped groove 21 is formed in the measuring plate 2 around the rotation axis of the measuring plate 2, the arc-shaped groove 21 corresponds to the top end surface of the supporting column 12, the fastening screw hole 120 corresponding to the fastening bolt is formed in the top end surface of the supporting column 12, the fastening bolt passes through the arc-shaped groove 21 and is screwed in the fastening screw hole 120, and the end cap 31 of the fastening bolt abuts against the measuring plate 2 to fix the measuring plate 2, so that the measuring plate 2 is prevented from rotating around the supporting column 12. The fixing mode of the fastening bolts is adopted, the structure is simple, the realization is easy, the operation is convenient, and the accuracy of the angle measurement of each stator blade 20 can be ensured. Preferably, the fastening bolt comprises a smooth section 32 and a screw section 33 which are integrally connected, the smooth section 32 is matched with the arc-shaped groove 21, and the screw section 33 is in threaded connection with the fastening screw hole 120. End cap 31 is integrally connected to the top end of smooth section 32. The outer diameter of the screw section 33 is smaller than that of the smooth section 32, and the length of the screw section 33 is smaller than that of the smooth section 32. The design is convenient for processing and manufacturing, and the manufacturing cost is reduced.
As shown in fig. 5 and 6, the present invention further provides a measuring method using the adjustable stator blade installation angle measuring apparatus, including the following steps: the casing 10 is placed on the positioning portion 13 to position the casing 10, so that the axis of the positioned casing 10 coincides with the axis of the supporting column 12. The universal angle gauge 4 is fixed on the measuring plate 2, so that the universal angle gauge 4 takes the axial lead of the casing 10 on the positioning part 13 as the measuring center. Firstly calibrating the zero position of the universal angle gauge 4, rotating the measuring plate 2 to drive the universal angle gauge 4 to correspondingly rotate to the upper part of one side space of the stator blade 20 to be measured, adjusting the straight ruler 41 of the universal angle gauge 4 to ensure that the straight ruler 41 descends to one side space of the stator blade 20 to be measured, and locking the measuring plate 2 on the supporting column 12 after enabling the straight ruler 41 to be tightly attached to the air inlet and outlet edges (namely two end points A, B of the reference measuring section S) of the stator blade 20 to be measured by adjusting the adjusting nut 48 of the universal angle gauge 4, thereby reading the installation angle (the angle theta shown in figure 6) of the stator blade 20 through the universal angle gauge 4. After the installation angle of one stator blade 20 is measured, the straight ruler 41 of the universal angle gauge 4 is adjusted, so that the straight ruler 41 rises above the stator blade 20, the rotary measuring plate 2 drives the universal angle gauge 4 to correspondingly rotate to the upper side of one side space of the stator blade 20 at the next position, and the installation angle of each stator blade 20 is measured in corresponding steps in a circulating mode.
By adopting the measuring method, the installation angle of each stator blade 20 can be measured in batches, the operation is simple and convenient, the damage to the measured part during measurement can be avoided, and the measuring efficiency of the installation angle of the stator blades is improved. Practice proves that by adopting the measuring method, the assembling and measuring period is improved from the original 1 day to the current 2.5 hours, and the working efficiency is greatly improved. Personnel configuration is reduced to 1 person from the original 2 persons assembly, measurement, has promoted personnel utilization ratio.
The invention also provides an axial-flow compressor assembled after measurement by using the adjustable stator blade installation angle measuring device, which comprises a casing 10 and stator blades 20 installed on the inner wall of the casing 10, wherein the installation angles of the stator blades 20 are obtained by using the adjustable stator blade installation angle measuring device. The axial-flow compressor adopts adjustable stator blade installation angle measuring device to record the installation angle of stator blade 20, can guarantee that stator blade 20 installation angle is accurate, promotes the measurement efficiency to stator blade 20 installation angle, avoids damaging the part of being surveyed when measuring, can guarantee that one-time assembly is qualified, improves axial-flow compressor's assembly efficiency and assembly quality.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An adjustable stator blade installation angle measuring device is used for measuring the installation angle of a stator blade (20) on the inner wall of a casing (10), and is characterized in that the adjustable stator blade installation angle measuring device comprises a positioning base (1), a measuring plate (2), a fastening piece (3) and a universal angle gauge (4), wherein the positioning base (1) comprises a bottom plate (11) and a supporting column (12) fixed on the bottom plate (11), and a positioning part (13) for positioning the bottom of the casing (10) is arranged on the bottom plate (11), so that the axial lead of the positioned casing (10) is perpendicular to the plane of the bottom plate (11); the measuring plate (2) can be rotatably arranged at the top end of the supporting column (12) around the axial lead of the casing (10) on the positioning part (13); universal angle gauge (4) is installed in the one end of measuring board (2), and fastener (3) are used for locking measuring board (2) on support column (12) to supply ruler (41) of adjusting universal angle gauge (4) to lock measuring board (2) after hugging closely the air inlet and outlet edge of stator blade (20), thereby read out the installation angle of stator blade (20) through universal angle gauge (4).
2. The adjustable stator blade installation angle measuring device of claim 1, wherein the positioning portion (13) is a positioning disc matched with an inner hole at the bottom of the casing (10), and an annular spigot (14) is arranged at the junction of the positioning disc and the bottom plate (11) and surrounds the positioning disc so as to realize positioning by sleeving the bottom of the casing (10) on the periphery of the positioning disc.
3. The adjustable stator vane mounting angle measuring device of claim 2, wherein the support column (12) is a cylindrical support welded to the positioning disk, and an axis of the cylindrical support coincides with an axis of the positioning disk.
4. The adjustable stator blade installation angle measuring device of claim 3, wherein the cylindrical support is a hollow cylindrical support, a rotating shaft (5) is rotatably installed in an inner hole of the hollow cylindrical support, and the measuring plate (2) is horizontally fixed at the top end of the rotating shaft (5).
5. The adjustable stator blade installation angle measuring device of claim 4, wherein the measuring plate (2) is welded to a rotating shaft (5), and the rotating shaft (5) is in clearance fit with the inner hole of the hollow cylindrical support.
6. The adjustable stator blade installation angle measuring device according to claim 1, wherein the universal angle gauge (4) comprises a straight ruler (41), a base ruler (42), a main ruler (44), a vernier ruler (45), a fixture block (46), a braking portion (47) and an adjusting nut (48), the main ruler (44) is an arc piece, the front surface of the arc piece is provided with main scales, the base ruler (42) is fixed at one end of the arc piece, the back surface of the arc piece is provided with a sliding block (49) in a sliding manner along the arc direction of the arc piece through the adjusting nut (48), the vernier ruler (45) is fixed on the sliding block (49), the front surface of the vernier scale (45) is provided with vernier scales matched with the main scales, the braking portion (47) is used for preventing the sliding block (49), the fixture block (46) is fixed on the sliding block (49) and extends to one end of the center of the arc piece, the straight scale (41) is fixed on the fixture block (46) through a clamping bolt (40) along the length direction of the straight scale (41) in a position-adjustable mode.
7. The adjustable stator blade installation angle measuring device according to claim 1, wherein one end of the measuring plate (2) is provided with a fixing groove (23) for accommodating a base (42) of the universal angle gauge (4), the base (42) is positioned in the fixing groove (23) through a positioning pin (43), so that the universal angle gauge (4) takes the axial line of the casing (10) on the positioning portion (13) as a measuring center, and the universal angle gauge (4) is fixed in the fixing groove (23) on the measuring plate (2) through a fixing bolt (25).
8. The device for measuring the installation angle of the adjustable stator blade as claimed in claim 1, wherein the fastening member (3) is a fastening bolt, an arc-shaped groove (21) is formed in the measuring plate (2) around the rotation axis of the measuring plate (2), the arc-shaped groove (21) corresponds to the top end surface of the supporting column (12), a fastening screw hole (120) correspondingly matched with the fastening bolt is formed in the top end surface of the supporting column (12), the fastening bolt penetrates through the arc-shaped groove (21) and is screwed in the fastening screw hole (120), and an end cap (31) of the fastening bolt abuts against the measuring plate (2) so as to fix the measuring plate (2).
9. A measuring method of an adjustable stator blade installation angle measuring device is characterized by comprising the following steps: placing the casing (10) on the positioning part (13) to position the casing (10), so that the axis of the positioned casing (10) is superposed with the axis of the support column (12);
fixing the universal angle gauge (4) on the measuring plate (2) so that the universal angle gauge (4) takes the axial lead of the casing (10) on the positioning part (13) as a measuring center;
calibrating a zero position of the universal angle gauge (4), and rotating the measuring plate (2) to drive the universal angle gauge (4) to correspondingly rotate to the upper part of a space on one side of a stator blade (20) to be measured;
the method comprises the steps that a ruler (41) of a universal angle gauge (4) is adjusted, so that the ruler (41) descends to a space on one side of a stator blade (20) to be measured, the ruler (41) is tightly attached to an air inlet and exhaust edge of the stator blade (20) to be measured through adjusting an adjusting nut (48) of the universal angle gauge (4), then a measuring plate (2) is locked on a supporting column (12), and therefore the mounting angle of the stator blade (20) is read through the universal angle gauge (4);
after the installation angle of one stator blade (20) is measured, the ruler (41) of the universal angle gauge (4) is adjusted, so that the ruler (41) rises above the stator blade (20), the rotary measuring plate (2) drives the universal angle gauge (4) to correspondingly rotate to the upper side of one side space of the stator blade (20) at the next position, and the installation angle of each stator blade (20) is measured in corresponding steps in a circulating mode.
10. An axial flow compressor comprising a casing (10) and stator blades (20) mounted to an inner wall of the casing (10), characterized in that the mounting angle of the stator blades (20) is obtained using the adjustable stator blade mounting angle measuring device according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111056511.1A CN113959306A (en) | 2021-09-09 | 2021-09-09 | Adjustable stator blade installation angle measuring device and method and axial-flow type air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111056511.1A CN113959306A (en) | 2021-09-09 | 2021-09-09 | Adjustable stator blade installation angle measuring device and method and axial-flow type air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113959306A true CN113959306A (en) | 2022-01-21 |
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| CN202111056511.1A Pending CN113959306A (en) | 2021-09-09 | 2021-09-09 | Adjustable stator blade installation angle measuring device and method and axial-flow type air compressor |
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| CN114777623A (en) * | 2022-05-23 | 2022-07-22 | 哈尔滨汽轮机厂有限责任公司 | Radial line angle ruler for rotor blades of steam turbine set |
| CN114894063A (en) * | 2022-06-29 | 2022-08-12 | 中国航发动力股份有限公司 | Device and method for detecting blade tip clearance of adjustable flow blade of stator of gas compressor |
| CN116558387A (en) * | 2023-07-05 | 2023-08-08 | 成都航利航空科技有限责任公司 | Rapid detection device and method for welding position of stator assembly blade of air compressor |
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| CN116558387A (en) * | 2023-07-05 | 2023-08-08 | 成都航利航空科技有限责任公司 | Rapid detection device and method for welding position of stator assembly blade of air compressor |
| CN116558387B (en) * | 2023-07-05 | 2023-09-12 | 成都航利航空科技有限责任公司 | Rapid detection device and method for welding position of stator assembly blade of air compressor |
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