Device, method and system for measuring mounting angle of adjustable stator blade of gas compressor

Abstract

The invention discloses a device, a method and a system for measuring the mounting angle of an adjustable stator blade of a gas compressor. The device comprises an air floating turntable, a positioning mechanism, a lifting mechanism and a detection mechanism, the positioning mechanism is used for fixing the compressor stator assembly; the lifting mechanism is used for driving the detection mechanism to lift; the detection mechanism comprises a U-shaped measuring rod, a digital display inclinometer, a support plate and a horizontal sliding plate; the horizontal sliding plate is fixed on the lifting mechanism through a first positioning pin; the supporting plate is connected with the horizontal sliding plate through a rotating shaft; the digital display inclinometer is mounted above the support plate through a fixed knob; the U-shaped measuring rod is fixed through the measuring rod positioning knob, and the U-shaped measuring rod is used for detecting the angle of an adjustable stator blade on the compressor stator assembly. Through center line positioning and U-shaped measuring rod design, the operation space is expanded, the process is simplified, the manpower demand is reduced, the detection efficiency is improved by more than 5 times, the precision stability is improved, and the detection cost and the personnel skill requirement are reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of aero-engine detection, and particularly relates to a compressor adjustable stator blade installation angle measuring device, method and system. BACKGROUND

[0002] In the manufacturing process of an aero-engine, the assembly of a compressor stator component is one of the key links, and the installation angle precision of the adjustable stator blade directly affects the overall performance of the engine. However, the measurement method of the traditional compressor adjustable stator blade installation angle detection device has many deficiencies. These methods usually rely on hoisting the compressor stator component to a specific platform and measuring with the rear end face of the component as the reference. This process is not only complex and time-consuming, but also requires multiple people to cooperate, which is inefficient. In addition, since the detection process requires repeated rotation of the compressor stator component and the detection tool placed on the rear end face, the detection accuracy is difficult to guarantee, and the skill requirements for the operator are high, which further increases the detection cost.

[0003] The traditional detection method requires the operator to have high professional skills, because the position of the detection tool needs to be accurately adjusted to ensure close contact with the compressor stator blade during the detection process. Any slight deviation in this process can lead to inaccurate detection results, thereby affecting the performance and safety of the engine. At the same time, due to the complexity and time-consuming nature of the detection process, the detection cost is high, which is not conducive to large-scale production and cost control.

[0004] With the rapid development of the aviation industry, the requirements for engine performance are increasing, and the detection precision and efficiency of the installation angle of the compressor adjustable stator blade have become key factors restricting the manufacturing quality of the engine. However, the existing detection methods are difficult to meet the needs of modern aero-engine manufacturing in terms of precision and efficiency. SUMMARY

[0005] The purpose of the embodiments of the present application is to provide a compressor adjustable stator blade installation angle measuring device and method. To solve the problems of the existing detection methods, such as the need for multiple people to operate, complex process, time-consuming, low efficiency, poor precision stability, high skill requirements for operators, and high detection cost.

[0006] To achieve the above purpose, the following technical solutions are adopted in the present application: In a first aspect, a compressor adjustable stator blade installation angle detection device is provided, comprising a gas bearing turntable, a positioning mechanism arranged on the gas bearing turntable, a lifting mechanism, and a detection mechanism arranged on the lifting mechanism. The positioning mechanism is used to fix the compressor stator component. The lifting mechanism is used to drive the detection mechanism to lift. The detection mechanism comprises a U-shaped measuring rod, a digital inclinometer, a support plate, and a horizontal sliding plate. The horizontal sliding plate is fixed to the lifting mechanism by a first positioning pin. The support plate is connected to the horizontal sliding plate by a rotating shaft. The digital inclinometer is installed above the support plate by a fixing knob. The U-shaped measuring rod is fixed by a measuring rod positioning knob, and the U-shaped measuring rod is used to detect the angle of the adjustable stator blade on the compressor stator assembly.

[0007] In a possible implementation, the precision air floating turntable comprises a support, an air floating rotating platform arranged on the support, a column, and a cross beam on the column. The cross beam is fixed to the lifting mechanism by a fastening knob at an end away from the column. The air floating rotating platform is rotationally arranged on the support.

[0008] In a possible implementation, the lifting mechanism comprises a vertical sliding rail, a lifting arm, a second positioning pin, and a fastening knob. The vertical sliding rail is installed on the cross beam by a fastening knob. The vertical sliding rail is provided with a plurality of positioning holes in the height direction, and the positioning holes correspond to the detection heights of the multiple stages of blades, respectively. The lifting arm is fixed to the positioning hole of the vertical sliding rail by a second positioning pin.

[0009] In a possible implementation, the vertical sliding rail is provided with three positioning holes corresponding to the detection heights of the first, second, and third stages of adjustable stator blades of the compressor stator assembly, and the second positioning pin and the fastening knob are used to realize the height locking of the lifting arm.

[0010] In a possible implementation, the positioning mechanism comprises a positioning platform, a positioning bolt, and a connecting bolt. The lower end surface of the positioning platform is fixed to the air floating rotating platform by a connecting bolt, and the upper end surface of the positioning platform is provided with a through hole matched with the bolt hole of the front mounting edge of the compressor stator assembly.

[0011] In a possible implementation, the horizontal sliding plate can slide horizontally at the end of the lifting arm, and is fixed in position by a positioning hole and a second positioning pin to adapt to the axial distance of the detection section of each stage of blades.

[0012] In a second aspect, a measurement method of a compressor adjustable stator blade installation angle detection device is provided, comprising the following steps: S1: Fix the positioning mechanism to the precision air floating turntable, and ensure that the positioning accuracy is ≤0.005 mm through jump detection. S2: Install the compressor stator assembly on the end face of the positioning mechanism and fix it through positioning bolts; S3: According to the detected blade level, adjust the lifting arm to the corresponding height positioning hole, and determine the axial position of the detection section through the horizontal sliding plate. S4: Rotate the precision air floating turntable, make the U-shaped measuring rod sequentially fit the inlet and exhaust sides of the 5th section of each level blade, and record the detection angle β through the digital inclinometer.

[0013] In a possible implementation, when measuring, the U-shaped measuring rod needs to be ensured to fit the inlet and exhaust sides of the blade at the same time, otherwise the position of the measuring rod needs to be adjusted until the requirement is met.

[0014] In a possible implementation, after detecting the blades of one level, the assembly does not need to be disassembled, and only the lifting mechanism and the horizontal sliding plate need to be adjusted to switch to the detection of the blades of the next level until the measurement of all levels of blades is completed.

[0015] In a third aspect, a compressor adjustable stator blade installation angle detection system is provided, which can improve the detection efficiency to more than 5 times of the traditional method through the cooperation of the center line positioning reference and the U-shaped measuring rod.

[0016] Compared with the prior art, the present application has the following beneficial effects: The compressor adjustable stator blade installation angle measurement device provided by the present application can realize the alignment of the center line reference of the detection device and the compressor stator assembly through the modular design of the positioning mechanism, the lifting mechanism, the detection mechanism and the precision air floating turntable, avoid the deviation problem of the traditional rear end positioning, the opening structure of the U-shaped measuring rod can expand the operation space, the inlet and exhaust sides of the adjustable stator blade can be fitted at the same time, the digital inclinometer can be used to realize the accurate reading of the angle, the operation process is simplified and the detection accuracy is improved.

[0017] In a possible implementation, the air floating rotating platform can realize high-precision rotation through the air floating bearing, avoid the wear and error of the traditional mechanical rotation, cooperate with the rigid support of the cross beam and the stand to ensure the stability of the device during the detection process, and the detachable lifting mechanism installation mode facilitates the equipment maintenance and debugging, and improves the flexibility of the device.

[0018] In a possible implementation, the multi-level positioning hole design can realize the rapid positioning of the detection mechanism on different height blades, the lifting mechanism does not need to be repeatedly disassembled and assembled, the operation steps and time cost are reduced, the double locking mechanism of the second positioning pin and the fastening knob can ensure that the lifting arm remains stable during the detection process, and the detection error caused by shaking is avoided.

[0019] A method for measuring the installation angle of adjustable stator blades on a compressor. The standardized inspection process uses centerline positioning and air-floating turntable rotation to achieve rapid batch inspection of blade angles, avoiding the tedious steps of multiple component hoisting in traditional methods. Runout detection ensures benchmark accuracy, and the real-time readings of the digital inclinometer reduce manual interpretation errors. Overall inspection efficiency is more than five times higher than that of traditional methods.

[0020] In one possible implementation, forced fitting requirements ensure that the test data reflects the true angle of the blade and avoid false values ​​caused by measuring rod position deviation; the adjustable measuring rod height and angle design improves the adaptability of the test. Even if there are manufacturing tolerances on the blade, precise fitting can be achieved through fine-tuning, thereby improving the reliability of the test results.

[0021] A compressor adjustable stator blade installation angle detection system achieves a leapfrog improvement in detection efficiency through a dual combination of hardware innovation and process optimization. At the same time, the precision mechanical structure and digital measurement tools ensure the stability of detection accuracy. It reduces dependence on operator skills, significantly reduces labor costs and equipment loss, and provides key technical support for efficient aero-engine manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A cross-sectional view of a stator assembly of an engine compressor; Figure 2 for Figure 1 Schematic diagram of the detection position of the adjustable stator blade; Figure 3 for Figure 2 Schematic diagram of the adjustable stator blade detection angle β; Figure 4 This is a schematic diagram of the overall structure of a device for measuring the installation angle of adjustable stator blades of a compressor provided in this application; Figure 5 This is a schematic diagram of the overall structure of a detection mechanism provided in this application.

[0023] The accompanying drawings are as follows: 1. compressor stator assembly; 2. positioning mechanism; 2a. positioning bolt; 2b. connecting bolt; 2c. positioning platform; 3. lifting member; 3a. vertical slide rail; 3b. lifting arm; 3c. second positioning pin; 3d. tightening knob; 4. supporting assembly; 4a. U-shaped measuring rod; 4b. digital inclinometer; 4c. support plate; 4d. horizontal sliding plate; 4e. stop pin; 4f. rotating shaft; 4g. measuring rod positioning knob; 4h. positioning hole; 4j. first positioning pin; 4k. fixing knob; 5. detection mechanism. DETAILED DESCRIPTION

[0024] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope. Therefore, the drawings and descriptions are to be regarded as illustrative in nature rather than restrictive.

[0025] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0027] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection, or communication; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include the first and second features directly contacting, or the first and second features not directly contacting but contacting through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0029] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of the present application.

[0030] As shown in FIGS. Figure 1 , Figure 2 and Figure 3 , an engine compressor stator assembly can include an upper half casing 1d and a lower half casing 1e, a first stage adjustable stator vane 1f, a second stage adjustable stator vane 1g, a third stage adjustable stator vane 1h, a first stage link ring assembly 1j, a second stage link ring assembly 1k, a third stage link ring assembly 1m, a first stage inner ring assembly 1a, a second stage inner ring assembly 1b, a third stage inner ring assembly 1c, and a plurality of split bolt pairs.

[0031] The split bolt pairs connect the upper half casing 1d and the lower half casing 1e to be longitudinally installed as a whole; the first stage adjustable stator vane 1f connects the casing (including the upper half casing 1d and the lower half casing 1e, the same below) and the first stage link ring assembly 1j and the first stage inner ring assembly 1a to be a whole.

[0032] The second stage adjustable stator vane 1g connects the casing and the second stage link ring assembly 1k and the second stage inner ring assembly 1b to be a whole.

[0033] The third stage adjustable stator vane 1h connects the casing and the third stage link ring assembly 1m and the third stage inner ring assembly 1c to be a whole; the included angle between the common normal line of the inlet side and the exhaust side of the V section of the first stage adjustable stator vane 1f, the second stage adjustable stator vane 1g, and the third stage adjustable stator vane 1h and the engine center line is the detection angle β.

[0034] The detection method is that, when the engine compressor stator assembly is assembled, the first stage adjustable stator vane, the first stage link ring assembly, and the first stage inner ring assembly are first installed on the casing, the first stage adjustable stator vane is fixed at the design required angle position by using a special angle positioning plate, and the detection angle β of each first stage adjustable stator vane is detected.

[0035] After passing the inspection, the second stage adjustable stator vane, the second stage link ring assembly, and the second stage inner ring assembly are installed on the casing, the second stage adjustable stator vane is fixed at the design required angle position by using a special angle positioning plate, and the detection angle β of each second stage adjustable stator vane is detected.

[0036] After passing the test, install the third adjustable stator blade, the third linkage ring assembly and the third inner ring assembly on the casing, fix the third adjustable stator blade at the designed angle position by using the special angle positioning plate, and detect the detection angle β of each third adjustable stator blade.

[0037] As shown in Figure 4 and Figure 5 The adjustable stator blade installation angle detection device for the compressor and the method thereof can include an air floating turntable, a positioning mechanism 2 arranged on the air floating turntable, a lifting mechanism, and a detection mechanism 5 arranged on the lifting mechanism.

[0038] The positioning mechanism 2 can fix the compressor stator assembly 1 on the air floating turntable.

[0039] By adjusting the lifting mechanism, the lifting mechanism can adjust the lifting of the detection mechanism 5 in the height direction according to the detection needs, so that the detection mechanism 5 detects the adjustable stator blades of different heights of the compressor stator assembly 1.

[0040] The detection mechanism 5 can include a U-shaped measuring rod 4a, a digital inclinometer 4b, a support plate 4c, and a horizontal sliding plate 4d.

[0041] The materials of the U-shaped measuring rod 4a, the support plate 4c and the horizontal sliding plate 4d can be stainless steel materials or aluminum alloy materials.

[0042] By adjusting the first positioning pin 4j3c, the horizontal sliding plate 4d can be fixed on the lifting mechanism.

[0043] The support plate 4c is connected with the horizontal sliding plate 4d through a rotating shaft 4f, in order to facilitate the firm fixation of the support plate 4c on the horizontal sliding plate 4d, a stop pin 4e is arranged on the horizontal sliding plate 4d, and by adjusting the stop pin 4e, the fixation of the support plate 4c on the horizontal sliding plate 4d can be realized.

[0044] The digital inclinometer 4b is installed above the support plate 4c through a fixing knob 4k.

[0045] The U-shaped measuring rod 4a is fixed through a measuring rod positioning knob 4g, one end of the U-shaped measuring rod 4a is arranged between the abutting portion of the measuring rod positioning knob 4g and the support plate 4c, and by adjusting the measuring rod positioning knob 4g, the abutting portion of the measuring rod positioning knob 4g can fix the U-shaped measuring rod 4a on the support plate 4c, and the other end of the U-shaped measuring rod 4a is provided with an opening, which can be used for detecting the angle of the adjustable stator blade on the compressor stator assembly 1.

[0046] In the embodiment of the present application, through the modular design of the positioning mechanism 2, the lifting mechanism, the detection mechanism 5 and the precision air floating turntable, the center line reference alignment of the detection device and the compressor stator assembly 1 is realized, and the deviation problem of the traditional rear end face positioning is avoided; the opening structure of the U-shaped measuring rod 4a enlarges the operation space, can simultaneously fit the adjustable stator blade inlet and exhaust sides, cooperates with the digital inclinometer 4b to realize accurate reading of the angle, simplifies the operation process and improves the detection precision.

[0047] In a possible embodiment, the precision air floating turntable can include a support, an air floating rotating platform arranged on the support, a column and a cross beam located on the column.

[0048] The column of the precision air floating turntable supports the cross beam, the cross beam end is fixed with a vertical sliding rail 3a through a fastening knob 3d, the air floating rotating platform realizes low friction rotation through an air floating bearing, and the manual rotating platform can drive the compressor stator assembly 1 to rotate, so that the detection mechanism 5 is aligned with each stage of blades in turn.

[0049] In the embodiment of the present application, the air floating rotating platform realizes high-precision rotation through the air floating bearing, avoids the wear and error of the traditional mechanical rotation, cooperates with the rigid support of the cross beam and the column, and ensures the stability of the device during the detection process; the detachable lifting mechanism installation mode facilitates equipment maintenance and debugging, and improves the flexibility of the device.

[0050] In a possible embodiment, the lifting mechanism can include a vertical sliding rail 3a, a lifting arm 3b, a second positioning pin 3c and a fastening knob 3d.

[0051] The vertical sliding rail 3a is installed on the cross beam through the fastening knob 3d.

[0052] Specifically, the vertical sliding rail 3a is a cylindrical structure, a plurality of positioning holes 4h are arranged in the height direction, and the positioning holes 4h correspond to the detection heights of the first stage, the second stage, the third stage to the n stage adjustable stator blades respectively.

[0053] When detecting the first stage blade, the lifting arm 3b is inserted into the lowermost positioning hole 4h through the second positioning pin 3c, and is locked by the fastening knob 3d; when detecting the second stage blade, the third stage blade and the n stage blade, the positioning hole 4h position where the second positioning pin 3c is located is adjusted upwards in turn.

[0054] In the embodiment of the present application, the multi-stage positioning hole 4h design realizes the rapid positioning of the detection mechanism 5 on blades of different heights, without the need to repeatedly disassemble and assemble the lifting mechanism, thereby reducing the operation steps and time cost; the double locking mechanism of the second positioning pin 3c and the fastening knob 3d ensures that the lifting arm 3b remains stable during the detection process, and avoids the detection error caused by shaking.

[0055] In a possible embodiment, the vertical slide rail 3a is provided with three positioning holes 4h, corresponding to the detection height of the adjustable stator blades of the first stage, the second stage and the third stage of the compressor stator assembly 1 respectively, and the height locking of the lifting arm 3b is achieved through the second positioning pin 3c and the fastening knob 3d.

[0056] Specifically, the vertical slide rail 3a is a cylindrical structure, and three positioning holes 4h are formed in the vertical slide rail 3a along the height direction, corresponding to the detection height of the adjustable stator blades of the first stage, the second stage and the third stage respectively. When the first stage blades are detected, the lifting arm 3b is inserted into the lowermost positioning hole 4h through the second positioning pin 3c, and is locked by the fastening knob 3d; when the second stage and the third stage blades are detected, the positioning hole 4h is adjusted upwards in sequence.

[0057] In the embodiment of the present application, the multi-stage positioning hole 4h design realizes the rapid positioning of the detection mechanism 5 on blades of different heights, without the need to repeatedly disassemble and assemble the lifting mechanism, thereby reducing the operation steps and time cost; the double locking mechanism of the second positioning pin 3c and the fastening knob 3d ensures that the lifting arm 3b remains stable during detection, avoiding detection errors caused by shaking.

[0058] In a possible embodiment, the positioning mechanism 2 can include a positioning platform 2c, a positioning bolt 2a and a connecting bolt 2b.

[0059] The lower end surface of the positioning platform 2c is fixed to the air floating rotary platform through the connecting bolt 2b, and the number and position of the through holes in the upper end surface are completely matched with the precision bolt holes in the front mounting edge of the compressor stator assembly 1, for example, there are 50 bolt holes in the front mounting edge of the assembly, and the upper end surface of the positioning platform 2c is provided with 50 coaxial through holes, so that the assembly is fixed on the positioning platform 2c through the precision positioning bolt 2a, and the coaxiality of the center line of the assembly and the air floating rotary platform is ensured.

[0060] In the embodiment of the present application, the front mounting edge of the compressor stator assembly 1 is used as the positioning reference, and the center line positioning is achieved through the coaxial design of the bolt holes, compared with the traditional rear end surface positioning, the influence of the axial movement of the assembly on the detection reference is eliminated; the parallel design of the upper and lower end surfaces of the positioning platform 2c ensures that the assembly remains horizontal after installation, providing a stable reference for subsequent angle detection.

[0061] In a possible embodiment, the horizontal sliding plate 4d can slide horizontally at the end of the lifting arm 3b, and is fixed in position through the positioning hole 4h and the first positioning pin 4j, so as to adapt to the axial distance of the detection section of the blades of each stage.

[0062] Specifically, the bottom of the horizontal sliding plate 4d is provided with a sliding groove, which can slide horizontally along the guide rail at the end of the lifting arm 3b. For example, when detecting the first-stage blade, the support plate 4c is slid to the positioning hole 4h close to the front end of the assembly, and is fixed by the first positioning pin 4j. When detecting the third-stage blade, the support plate 4c is slid to the rear-end positioning hole 4h. The sliding distance is pre-calibrated according to the axial distance of the detection section of each-stage blade.

[0063] In the embodiment of the present application, the adjustable design of the horizontal sliding plate 4d solves the detection problem of the multi-stage blades distributed along the axial direction. The axial position is quickly locked through the cooperation of the positioning hole 4h and the first positioning pin 4j, which avoids the repeated disassembly problem caused by the fixed position of the measuring tool in the traditional detection, and improves the detection efficiency. The universal design for adapting to different axial distances enhances the adaptability of the device to various types of compressor assemblies.

[0064] In a possible embodiment, a measuring method of a compressor adjustable stator blade installation angle detection device includes the following steps: S1: Fix the positioning mechanism 2 on the precision air floating turntable, and ensure that the positioning accuracy is less than or equal to 0.005 mm through jump detection.

[0065] S2: Install the compressor stator assembly 1 on the upper end surface of the positioning mechanism 2, and fix it through the positioning bolt 2a.

[0066] S3: According to the detection blade level, adjust the lifting arm 3b to the corresponding height positioning hole 4h, and determine the axial position of the detection section through the horizontal sliding plate 4d.

[0067] S4: Rotate the precision air floating turntable, so that the U-shaped measuring rod 4a is sequentially attached to the inlet and outlet sides of the fifth section of each-stage blade, and record the detection angle β through the digital inclinometer 4b.

[0068] When detecting the first-stage blade, first fix the positioning mechanism 22 on the air floating turntable 5, detect the jump of the outer cylindrical surface of the positioning platform 2c through the dial gauge, and then fix the assembly through the precision positioning bolt 2a.

[0069] Adjust the lifting arm 3b to the lowermost end positioning hole 4h, and adjust the horizontal sliding plate 4d to the first-stage detection section position. Rotate the air floating turntable so that the U-shaped measuring rod 4a is aligned with the first blade. Manually press down the U-shaped measuring rod 4a so that it is attached to the inlet and outlet sides of the blade. Read the detection angle β of the digital inclinometer 4b and record it.

[0070] After the detection of the blade is completed, rotate the platform to the position of the next blade, and repeat the operation until the detection of the first-stage blade is completed.

[0071] In the embodiment of the present application, the standardized detection process is realized by center line positioning and air floating turntable rotation, which realizes batch rapid detection of blade angle, avoids the cumbersome steps of multiple hoisting components in traditional methods, jump detection ensures the accuracy of the reference, and the real-time reading of the digital inclinometer 4b reduces the manual interpretation error, and the overall detection efficiency is improved by more than 5 times compared with the traditional method.

[0072] In a possible embodiment, when measuring, it is necessary to ensure that the U-shaped measuring rod 4a is in contact with the blade inlet and exhaust side at the same time, otherwise the position of the measuring rod needs to be adjusted until the requirements are met.

[0073] During the measurement process, if the U-shaped measuring rod 4a only contacts the blade inlet side or the exhaust side, loosen the measuring rod positioning knob 4g, adjust the height by sliding the U-shaped measuring rod 4a up and down, or adjust the angle of the measuring rod by rotating the shaft 4f, until the measuring rod is in contact with the blade on both sides, and then lock the knob for reading.

[0074] In the embodiment of the present application, the forced contact requirement ensures that the detection data reflects the true angle of the blade, avoiding false values caused by deviation of the measuring rod position; the adjustable height and angle of the measuring rod improve the detection adaptability, even if there is manufacturing tolerance in the blade, accurate contact can be achieved through fine adjustment, and the reliability of the detection result is improved.

[0075] In a possible embodiment, after detecting the first stage blade, the component does not need to be disassembled, and only needs to be switched to the next stage blade detection by adjusting the lifting mechanism and the horizontal sliding plate 4d, until all stages of blade measurement are completed.

[0076] After completing the first stage blade detection, the compressor stator component 1 does not need to be disassembled, only the first positioning pin 4j and the fastening knob 3d are loosened, the lifting arm 3b is adjusted to the middle positioning hole 4h, the first positioning pin 4j is loosened, the horizontal sliding plate 4d is slid to the positioning hole 4h of the second detection section and fixed, and then the air floating turntable is rotated to start detecting the second stage blade. The third stage blade detection is the same, only the positions of the lifting arm 3b and the sliding support plate 4c need to be adjusted.

[0077] In the embodiment of the present application, the "disassembly-free switching" design of multi-stage blade detection greatly shortens the detection period. In the traditional method, each stage of detection needs to be re-hoisted and positioned, while the device can complete the stage switching through modular adjustment, reducing the risk of reference deviation caused by disassembly, and reducing the labor input and operation difficulty, especially suitable for assembly line operation scenes.

[0078] A compressor adjustable stator blade installation angle detection system, through the cooperation of the center line positioning reference and the U-shaped measuring rod 4a, the detection efficiency is improved by more than 5 times compared with the traditional method.

[0079] In the detection of a certain type of engine compressor stator assembly 1, the device and method are used to complete the detection of three-stage blades in only 2 hours, while the traditional method takes more than 10 hours; the detection accuracy is controlled by the digital inclinometer 4b and the center line reference to meet the aviation engine assembly tolerance requirements.

[0080] In this embodiment, the detection system realizes a leap-forward improvement in detection efficiency through the combination of hardware innovation and process optimization, and ensures the stability of detection accuracy through precise mechanical structure and digital measurement tools; reduces the skill dependence on operators, significantly reduces labor costs and equipment wear and tear, and provides key technical support for efficient manufacturing of aviation engines.

[0081] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: modifying the technical solutions recorded in the foregoing embodiments, or making equivalent replacement for part or all of the technical features, does not make the essence of the corresponding technical solution deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A device for detecting the installation angle of an adjustable stator blade of a compressor, characterized by: It comprises an air-floating turntable (5), a positioning mechanism (2) provided on the air-floating turntable (5), a lifting mechanism (3), and a detection mechanism (4) provided on the lifting mechanism (3); The positioning mechanism (2) is used to fix the compressor stator assembly (1); The lifting mechanism (3) is used to drive the detection mechanism (4) to move up and down; The detection mechanism (4) comprises a U-shaped measuring rod (4a), a digital inclinometer (4b), a support plate (4c), and a horizontal sliding plate (4d); The horizontal sliding plate (4d) is fixed to the lifting mechanism (3) via a first positioning pin (4j); The support plate (4c) is connected to the horizontal sliding plate (4d) via a rotating shaft (4f); The digital display inclinometer (4b) is installed above the support plate (4c) via a fixed knob (4k); The U-shaped measuring rod (4a) is fixed by a measuring rod positioning knob (4g), and the U-shaped measuring rod (4a) is used to detect the angle of an adjustable stator blade on a compressor stator assembly (1).

2. The device for detecting the installation angle of an adjustable stator blade of a compressor according to claim 1, characterized in that: The precision air-floating turntable (5) comprises a bracket, an air-floating rotating platform (5a) arranged on the bracket, a column (5b), and a crossbeam (5c) located on the column (5b); One end of the crossbeam (5c) away from the upright post (5b) fixes the lifting mechanism (3) via a tightening knob (5d); The air-floating rotating platform (5a) is rotatably arranged on the bracket.

3. The device for detecting the installation angle of an adjustable stator blade of a compressor according to claim 1, characterized in that: The lifting mechanism (3) comprises a vertical slide rail (3a), a lifting arm (3b), a second positioning pin (3c) and a fastening knob (3d); The vertical slide rail (3a) is mounted on the crossbeam (5c) via a tightening knob (5d); The vertical slide rail (3a) is provided with a plurality of positioning holes along the height direction, and the positioning holes respectively correspond to the multi-level blade detection heights; The lifting arm (3b) is fixed to the positioning hole of the vertical slide rail (3a) via a second positioning pin (3c).

4. The device for detecting the installation angle of an adjustable stator blade of a compressor according to claim 1, characterized in that: The vertical slide rail (3a) is provided with three positioning holes, which respectively correspond to the detection heights of the first-stage, second-stage, and third-stage adjustable stator blades of the compressor stator assembly (1), and are used to achieve height locking of the lifting arm (3b) through a second positioning pin (3c) and a tightening knob (3d).

5. The device for detecting the installation angle of an adjustable stator blade of a compressor according to claim 1, characterized in that: The positioning mechanism (2) comprises a positioning platform (2c), a positioning bolt (2a) and a connecting bolt (2b); The lower end surface of the positioning platform (2c) is fixed to the air-floating rotating platform (5a) via connecting bolts (2b), and the upper end surface of the positioning platform (2c) is provided with a through hole matching the front mounting side bolt hole of the compressor stator assembly (1).

6. The device for detecting the installation angle of an adjustable stator blade of a compressor according to claim 1, characterized in that: The horizontal sliding plate (4d) can slide horizontally along the end of the lifting arm (3b) and is fixed in position by a positioning hole (4h) and a first positioning pin (4j) to adapt to the axial distance of the detection section of each level of blades.

7. A method for measuring the installation angle of an adjustable stator blade of a compressor, based on the installation angle detection device of an adjustable stator blade of a compressor according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: Fix the positioning mechanism (2) on the precision air-floating turntable (5) and ensure the positioning accuracy is ≤ 0.005 mm through the runout test; S2: Install the compressor stator assembly (1) on the upper end surface of the positioning mechanism (2) and fix it with the positioning bolts (2a); S3: According to the level of the blade to be tested, the lifting arm (3b) is adjusted to the corresponding height positioning hole, and the axial position of the testing section is determined by the horizontal sliding plate (4d); S4: Rotate the precision air-floating turntable (5) to make the U-shaped measuring rod (4a) sequentially fit the inlet and exhaust sides of the fifth section of each level of blades, and record the detection angle β through the digital display inclinometer (4b).

8. The method for measuring the installation angle of an adjustable stator blade of a compressor according to claim 7, characterized in that: When measuring, it is necessary to ensure that the U-shaped measuring rod (4a) is in contact with both the inlet and outlet sides of the blade at the same time. Otherwise, the measuring rod position should be readjusted until it meets the requirements.

9. The method for measuring the installation angle of an adjustable stator blade of a compressor according to claim 7, characterized in that: After inspecting the blades of one level, it is not necessary to disassemble the components, and the inspection of the blades of the next level can be switched to by simply adjusting the lifting mechanism (3) and the horizontal sliding plate (4d), until the measurement of blades of all levels is completed.

10. A compressor adjustable stator blade installation angle detection system, comprising the compressor adjustable stator blade installation angle detection device according to any one of claims 1 to 6 and the compressor adjustable stator blade installation angle detection device measurement method according to any one of claims 7 to 9, characterized in that: By cooperating with the centerline positioning reference and the U-shaped measuring rod (4a), the detection efficiency is increased to more than five times that of the traditional method.

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