CN117029639A - Rotor assembly blade torsion angle measuring device and method - Google Patents
Rotor assembly blade torsion angle measuring device and method Download PDFInfo
- Publication number
- CN117029639A CN117029639A CN202310477060.1A CN202310477060A CN117029639A CN 117029639 A CN117029639 A CN 117029639A CN 202310477060 A CN202310477060 A CN 202310477060A CN 117029639 A CN117029639 A CN 117029639A
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- blade
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000009434 installation Methods 0.000 claims abstract description 21
- 238000010030 laminating Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 28
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- G01B5/003—Measuring of motor parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The application discloses a rotor assembly blade torsion angle measuring device and a method, wherein one side of a wheel disc rim positioning block is used as a reference surface, the wheel disc rim positioning block is attached to the outer ring of a wheel disc rim of a compressor to be measured, the reference surface of the wheel disc rim positioning block is attached to the end part of the wheel disc rim of the compressor to be measured, the wheel disc rim positioning block is rotated, when an upper measuring block or a lower measuring block on the wheel disc rim positioning block is firstly contacted with the air inlet edge of the compressor blade on the wheel disc rim of the compressor to be measured, the gap value between the lower measuring block and the upper measuring block on the air outlet edge of the compressor blade is measured, and therefore the torsion angle of the compressor blade is obtained; according to the application, the rim of the compressor wheel disc to be detected is taken as a measurement reference, the theoretical distance between two sections of the rotor assembly blade is selected as the distance between the measurement surface of the upper measurement block and the measurement surface of the lower measurement block, and the angle of the chord line deflection of the blade in the theoretical installation state of the rotor assembly is taken as the angle of the measurement block relative to the design reference, so that the measurement accuracy is ensured.
Description
Technical Field
The application belongs to the field of measurement in mechanical assembly, and particularly relates to a device and a method for measuring torsion angles of rotor assembly blades.
Background
The tenon of the compressor blade is assembled on the tenon groove of the rim of the compressor wheel disc to form a rotor assembly, and in the rotor assembly, the chord line positions of all sections of the blade in the actual installation state and the theoretical model installation state are different, which is called the torsion angle of the rotor assembly blade. The torsion angle is an important index for evaluating the working state of the air compressor; at present, the monitoring of the torsion angle of the rotor assembly blade in the installation state mainly depends on manual experience to judge, and a tool and a method capable of accurately detecting the torsion angle of the rotor assembly blade in the installation state are not available, so that the assembly precision of the rotor assembly formed by assembling tenons of the compressor blade cannot be ensured.
Disclosure of Invention
The application aims to provide a rotor assembly blade torsion angle measuring device and a rotor assembly blade torsion angle measuring method, which are used for solving the problem that the existing method cannot effectively and accurately detect the torsion angle of a rotor assembly blade in an installation state.
The utility model provides a rotor subassembly blade torsion angle measuring device, includes rim plate locating piece, goes up measuring piece and measures the piece down, and the lower extreme of rim plate locating piece is the arc, can be with the compressor rim plate outline laminating of waiting to detect of installation rotor subassembly blade, and lower measuring piece is fixed in rim plate locating piece one side, goes up measuring piece and is fixed in rim plate locating piece through the locating shaft on, goes up measuring piece and measures the piece and be located same one side of rim plate locating piece down.
Preferably, the distance between the measuring surface of the upper measuring block and the measuring surface of the lower measuring block is the distance between the sections to be measured of the compressor blades installed on the rim of the compressor wheel disc to be measured; one side of the wheel disc rim positioning block is a reference surface and is contacted with the end part of the wheel disc rim of the compressor to be detected.
Preferably, the distance between the measuring surface of the upper measuring block and the measuring surface of the lower measuring block is the theoretical distance between the two sections of the compressor blade at the distance, and the chord line deflection angle between the measuring surface of the upper measuring block and the measuring surface of the lower measuring block is the chord line deflection angle of the blade in the theoretical installation state of the rotor assembly.
Preferably, the lower measuring block is fixed on the wheel disc rim positioning block through a pressing block.
Preferably, the wheel disc rim positioning block is provided with a threaded hole and a positioning groove, one side of the lower measuring block is placed in the positioning groove, the pressing block is placed on the lower measuring block, and the pressing block is fixed on the wheel disc rim positioning block through a fixing screw.
Preferably, the positioning shaft and the wheel disc rim positioning block adopt an integrated structure.
Preferably, the positioning shaft is connected with the wheel disc rim positioning block through threads.
A method of measuring a rotor assembly blade twist angle, comprising the steps of:
attaching a wheel rim positioning block to the outer ring of the wheel rim of the to-be-detected compressor, attaching a reference surface of the wheel rim positioning block to the end part of the wheel rim of the to-be-detected compressor, slowly rotating the wheel rim positioning block along the surface of the wheel rim of the to-be-detected compressor, when an upper measuring block or a lower measuring block on the wheel rim positioning block is firstly contacted with the air inlet side of the to-be-detected compressor blade on the wheel rim of the to-be-detected compressor, and then measuring the gap value between the lower measuring block and the upper measuring block at the air outlet side of the compressor blade, thereby obtaining the torsion angle of the compressor blade; when the upper measuring block or the lower measuring block is firstly contacted with the air inlet edge on the rim of the wheel disc of the compressor to be measured, the clearance value between the lower measuring block and the upper measuring block at the air inlet edge of the compressor blade is measured, so that the torsion angle of the compressor blade is obtained.
Preferably, the distance between the measuring surface of the upper measuring block and the measuring surface of the lower measuring block is the distance between the sections to be measured of the compressor blades installed on the rim of the compressor wheel disc to be measured; one side of the wheel disc rim positioning block is a reference surface and is contacted with the end part of the wheel disc rim of the compressor to be detected.
Preferably, the distance between the measuring surface of the upper measuring block and the measuring surface of the lower measuring block is the theoretical distance between the two sections of the compressor blade at the distance, and the chord line deflection angle between the measuring surface of the upper measuring block and the measuring surface of the lower measuring block is the chord line deflection angle of the blade in the theoretical installation state of the rotor assembly.
Compared with the prior art, the application has the following beneficial technical effects:
the application provides a rotor assembly blade torsion angle measuring device, which uses one side of a wheel disc rim positioning block as a reference surface, the wheel disc rim positioning block is attached to the outer ring of a wheel disc rim of a compressor to be measured, the reference surface of the wheel disc rim positioning block is attached to the end part of the wheel disc rim of the compressor to be measured, the wheel disc rim positioning block is slowly rotated along the surface of the wheel disc rim of the compressor to be measured, when an upper measuring block or a lower measuring block on the wheel disc rim positioning block is firstly contacted with the air inlet edge of a compressor blade on the wheel disc rim of the compressor to be measured, the rotor assembly blade in an installation state is explained to deviate towards the air outlet edge, then the clearance value between the lower measuring block and the upper measuring block on the air outlet edge of the compressor blade is measured, and the torsion angle of the compressor blade is obtained; according to the application, the rim of the compressor wheel disc to be detected is taken as a measurement reference, the theoretical distance between two sections of the rotor assembly blade is selected as the distance between the measurement surface of the upper measurement block and the measurement surface of the lower measurement block, and the angle of the chord line deflection of the blade in the theoretical installation state of the rotor assembly is taken as the angle of the measurement block relative to the design reference, so that the measurement accuracy is ensured.
Drawings
Fig. 1 is a front view of a measuring device according to an embodiment of the present application.
Fig. 2 is a cross-sectional view of fig. 1B-B.
Fig. 3 is a top view of a measuring device according to an embodiment of the application.
Fig. 4 is a schematic view of a structure of a compressor blade to be tested according to an embodiment of the present application.
FIG. 5 is a schematic view of a measurement structure of a blade of a compressor in an embodiment of the present application.
In the figure, 1, a wheel disc rim positioning block; 2. an upper measuring block; 3. a lower measurement block; 4. positioning a shaft; 5. briquetting; 6. and (5) fixing the screw.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The application provides a rotor assembly blade torsion angle measuring device, which is shown in figure 1, and comprises a wheel rim positioning block 1, an upper measuring block 2 and a lower measuring block 3, wherein the wheel rim positioning block 1 is used for being matched and positioned with a wheel rim of a compressor wheel, the lower end of the wheel rim positioning block 1 is arc-shaped and can be attached to the outline of the wheel rim of the compressor wheel to be detected for installing a rotor assembly blade, the lower measuring block 3 is fixed on one side of the wheel rim positioning block 1, the upper measuring block 2 is fixed on the wheel rim positioning block 1 through a positioning shaft 4, the upper measuring block 2 and the lower measuring block 3 are positioned on the same side of the wheel rim positioning block 1, and the distance between the measuring surface of the upper measuring block 2 and the measuring surface of the lower measuring block 3 is the distance between the sections to be detected for installing the compressor blade on the wheel rim of the compressor wheel to be detected; one side of the wheel rim positioning block 1 is a reference surface, the reference surface is contacted with the end part of the wheel rim of the compressor to be detected, under the condition that the distance between the measuring surface of the upper measuring block 2 and the measuring surface of the lower measuring block 3 is determined, the distance between the measuring surface of the upper measuring block 2 and the measuring surface of the lower measuring block 3 is the theoretical distance between two sections of the compressor blade at the distance, and the chord line deflection angle between the measuring surface of the upper measuring block 2 and the measuring surface of the lower measuring block 3 is the chord line deflection angle of the blade in the theoretical installation state of the rotor assembly; the distance between the measuring surfaces of the upper measuring block 2 and the lower measuring block 3 represents the vertical distance between the two measuring surfaces; the theoretical distance between two sections of the compressor blade at the distance represents the distance between the two sections of the compressor blade at the distance in the tangential direction of the rim of the compressor wheel disc; when measurement is needed, the wheel rim positioning block 1 is attached to the outer ring of the wheel rim of the to-be-measured compressor, the reference surface of the wheel rim positioning block 1 is attached to the end part of the wheel rim of the to-be-measured compressor, the wheel rim positioning block 1 is slowly rotated along the surface of the wheel rim of the to-be-measured compressor, when the upper measuring block 2 or the lower measuring block 3 on the wheel rim positioning block 1 is firstly contacted with the air inlet edge of the compressor blade on the wheel rim of the to-be-measured compressor, the rotor assembly blade in the installation state is described to deviate towards the air outlet edge, then the gap values of the lower measuring block 3 and the upper measuring block 2 on the air outlet edge of the compressor blade are measured, and the torsion angle of the compressor blade is obtained; when the upper measuring block 2 or the lower measuring block 3 is firstly contacted with the air inlet edge on the rim of the wheel disc of the compressor to be measured, the rotor assembly blade illustrating the installation state is deviated towards the air inlet edge, and the clearance value between the lower measuring block 3 and the upper measuring block 2 at the air inlet edge of the compressor blade is measured, so that the torsion angle of the compressor blade is obtained. According to the application, the rim of the compressor wheel disc to be detected is taken as a measurement reference, the theoretical distance between two sections of the rotor assembly blade is selected as the distance between the measurement surface of the upper measurement block 2 and the measurement surface of the lower measurement block 3, and the angle of the chord line deflection of the blade in the theoretical installation state of the rotor assembly is taken as the angle of the measurement block relative to the design reference, so that the measurement accuracy is ensured.
In the embodiment of the application, the compressor blade is made of a forge piece LY2 material, and the hardness HB=115N/mm < 2 >; the wheel disc rim positioning block 1, the upper measuring block 2 and the lower measuring block 3 in the measuring tool are made of forging LY11 materials, and the hardness HB=100deg.N/mm 2; LY11 material has a lower hardness than LY11 material, abbreviated as HB LY11 < HB LY2. The materials of the wheel rim positioning block 1, the upper measuring block 2 and the lower measuring block 3 are selected in order to prevent the rim and the blades from being damaged when the measuring tool measures the torsion angle of the blades of the rotor assembly. The material with the hardness lower than that of the compressor blade is selected, so that the safety in the process of measuring the torsion angle of the rotor assembly blade is ensured.
As shown in fig. 2, the lower measuring block 3 is fixed on the wheel disc rim positioning block 1 through a pressing block 5, a threaded hole and a positioning groove are formed in the wheel disc rim positioning block 1, one side of the lower measuring block 3 is placed in the positioning groove, the pressing block 5 is placed on the lower measuring block 3, and the pressing block 5 is fixed on the wheel disc rim positioning block 1 through a fixing screw 6, so that the lower measuring block 3 is pressed, and the wheel disc rim positioning block is installed by adopting the fixing screw, is simple in structure and convenient to replace.
The positioning shaft 4 and the wheel disc rim positioning block 1 can adopt an integrated structure, the length of the positioning shaft is fixed, and the measurement accuracy is high; the torsion angles among different sections of the compressor blade can be measured by adopting positioning shafts with different specification lengths.
The positioning shaft 4 is connected with the wheel disc rim positioning block 1 through threads, so that the positioning shaft 4 and the wheel disc rim positioning block 1 are convenient to detach and replace, and the applicability is high; the upper measuring block 2 is fixedly connected with the positioning shaft 4.
Examples
As shown in fig. 4, the present application is directed to the measurement of the twist angle between section iii and section XII of a blade; as shown in fig. 1 and 2, the distance value L between the measuring surface iii of the upper measuring block 2 and the measuring surface XII of the lower measuring block 3 is measured to be equal to the distance L-leaf between the iii-section and the XII-section of the compressor blade, i.e. lmeasurement=l-leaf. If the torsion angle of the other sections of the blade is required to be measured, the number of measuring blocks can be increased according to the distance between the other sections of the blade of the compressor, or the length of the positioning shaft 4 can be adjusted.
The chord angle to be measured in the application represents the included angle between the projection of each section chord line of the blade on the XOY plane and the central line of the engine shaft.
Angle β between measuring surface iii of upper measuring block 2 and reference surface a of wheel rim positioning block 1 Ⅲ The chord angle of the measuring surface III of the upper measuring block 2 corresponding to the section III of the blade is equal to 90 degrees minus the angle alpha between the chord line of the compressor blade and the symmetry line of the mortise Ⅲ And the mounting angle gamma of the compressor blade. Abbreviated as beta Ⅲ ＝90°-(α Ⅲ +γ)。
Similarly, the angle beta between XII of the lower measuring block 3 and the reference surface A of the wheel rim positioning block 1 XII The chord angle of the measuring surface XII of the lower measuring block 3 corresponding to the section XII of the blade is equal to 90 degrees minus the chord angle of the measuring surface XII of the lower measuring block 3 corresponding to the section XII of the blade, which is equal to the angle alpha between the chord line of the compressor blade and the symmetry line of the mortise XII A sum of the mounting angles gamma of the compressor blades; abbreviated as beta XII ＝90°-(α XII +γ)。
If the torsion angle of the other sections of the blade is required to be measured, the angle between the two measuring blocks and the reference surface of the wheel disc rim positioning block 1 can be determined according to the chord line angles of the other sections of the compressor blade. Abbreviated β=90° - (α+γ).
The bottom of the wheel disc rim positioning block 1 is matched with the rim of the compressor wheel disc and is used for measuring and positioning in the Y direction, namely the radial direction of the rim of the compressor wheel disc; the reference A of the wheel rim positioning block 1 is matched with the side part of the compressor wheel and is used for measuring and positioning in the X direction, namely the axial direction of the compressor wheel.
As shown in fig. 5, the rim positioning block 1 of the wheel disc is slowly rotated along the rim of the compressor wheel disc, when the upper measuring block 2 or the lower measuring block 3 on the rim positioning block 1 of the wheel disc is firstly contacted with the air inlet edge of the blade, the rotor assembly blade illustrating the installation state is deviated towards the air outlet edge, and the clearance value between the lower measuring block 3 and the upper measuring block 2 at the air outlet edge of the compressor blade is measured by using a feeler gauge, so that the torsion angle of the compressor blade is obtained; when the upper measuring block 2 or the lower measuring block 3 is firstly contacted with the air inlet edge of the blade, the rotor assembly blade in the installation state is described to deviate towards the air outlet edge, a clearance value of the lower measuring block 3 and the upper measuring block 2 at the air inlet edge of the compressor blade is measured by using a clearance gauge, and the converted torsion angle is converted.
Based on the structure of the measuring block, the torsion angle of the rotor assembly is measured by using the measuring tool, and auxiliary parts for measuring the clearance value are matched with the dial indicator and the dial indicator; the method for measuring the torsion angle of the rotor assembly blade by using the measuring tool is simple in measurement method and accurate in measurement value, and the clearance value of the air inlet side or the air outlet side is measured by using the feeler gauge. Meanwhile, the design method and the use method of the measuring tool can be popularized to the fact that the torsion angle of the installation state of all rotor assemblies of the engine needs to be measured, and the measuring tool has universality.
Claims (10)
1. The utility model provides a rotor subassembly blade torsion angle measuring device, a serial communication port, including rim plate locating piece (1), go up measuring piece (2) and measure piece (3) down, the lower extreme of rim plate locating piece (1) is the arc, can with the compressor rim plate outline laminating of waiting to detect of installation rotor subassembly blade, lower measuring piece (3) are fixed in rim plate locating piece (1) one side, go up measuring piece (2) and be fixed in rim plate rim locating piece (1) through locating shaft (4), go up measuring piece (2) and lower measuring piece (3) are located the same side of rim plate locating piece (1).
2. A rotor assembly blade twist angle measuring device according to claim 1, characterized in that the distance between the measuring surface of the upper measuring block (2) and the measuring surface of the lower measuring block (3) is the distance between the sections to be measured of the compressor blades mounted on the rim of the compressor wheel to be measured; one side of the wheel disc rim positioning block (1) is a reference surface and is contacted with the end part of the wheel disc rim of the compressor to be detected.
3. A rotor assembly blade twist angle measuring device according to claim 2, characterized in that the distance between the measuring surface of the upper measuring block (2) and the measuring surface of the lower measuring block (3) is the theoretical distance between the two sections of the compressor blade at this distance, and the chord deflection angle between the measuring surface of the upper measuring block (2) and the measuring surface of the lower measuring block (3) is the chord deflection angle of the blade in the theoretical installation state of the rotor assembly.
4. A rotor assembly blade twist angle measuring device according to claim 1, characterized in that the lower measuring block (3) is fixed to the rim positioning block (1) of the wheel disc by means of a press block (5).
5. The rotor assembly blade torsion angle measuring device according to claim 4, wherein threaded holes and positioning grooves are formed in the wheel disc rim positioning block (1), one side of the lower measuring block (3) is placed in the positioning grooves, the pressing block (5) is placed on the lower measuring block (3), and the pressing block (5) is fixed on the wheel disc rim positioning block (1) through fixing screws (6).
6. A rotor assembly blade twist angle measuring device according to claim 1, characterized in that the positioning shaft (4) and the wheel rim positioning block (1) are of an integral structure.
7. A rotor assembly blade twist angle measuring device according to claim 1, characterized in that the positioning shaft (4) is screwed with the rim positioning block (1) of the wheel disc.
8. A method of measuring a rotor assembly blade twist angle, comprising the steps of:
attaching a wheel rim positioning block to the outer ring of the wheel rim of the to-be-detected compressor, attaching a reference surface of the wheel rim positioning block to the end part of the wheel rim of the to-be-detected compressor, slowly rotating the wheel rim positioning block along the surface of the wheel rim of the to-be-detected compressor, when an upper measuring block or a lower measuring block on the wheel rim positioning block is firstly contacted with the air inlet side of the to-be-detected compressor blade on the wheel rim of the to-be-detected compressor, and then measuring the gap value between the lower measuring block and the upper measuring block at the air outlet side of the compressor blade, thereby obtaining the torsion angle of the compressor blade; when the upper measuring block or the lower measuring block is firstly contacted with the air inlet edge on the rim of the wheel disc of the compressor to be measured, the clearance value between the lower measuring block and the upper measuring block at the air inlet edge of the compressor blade is measured, so that the torsion angle of the compressor blade is obtained.
9. The method for measuring the torsion angle of the rotor assembly blade according to claim 8, wherein the distance between the measuring surface of the upper measuring block (2) and the measuring surface of the lower measuring block (3) is the distance between the sections to be measured of the compressor blade mounted on the rim of the compressor wheel to be measured; one side of the wheel disc rim positioning block (1) is a reference surface and is contacted with the end part of the wheel disc rim of the compressor to be detected.
10. A method of measuring the twist angle of a rotor assembly blade according to claim 8, characterized in that the distance between the measuring surface of the upper measuring block (2) and the measuring surface of the lower measuring block (3) is the theoretical distance between the two sections of the compressor blade at this distance, and the chord deflection angle between the measuring surface of the upper measuring block (2) and the measuring surface of the lower measuring block (3) is the chord deflection angle of the blade in the theoretical installation state of the rotor assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310477060.1A CN117029639A (en) | 2023-04-27 | 2023-04-27 | Rotor assembly blade torsion angle measuring device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310477060.1A CN117029639A (en) | 2023-04-27 | 2023-04-27 | Rotor assembly blade torsion angle measuring device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117029639A true CN117029639A (en) | 2023-11-10 |
Family
ID=88636003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310477060.1A Pending CN117029639A (en) | 2023-04-27 | 2023-04-27 | Rotor assembly blade torsion angle measuring device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117029639A (en) |
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2023
- 2023-04-27 CN CN202310477060.1A patent/CN117029639A/en active Pending
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