Digitized turbine guide vane area measurement device

Abstract

The application discloses a kind of digital turbine guider exhaust area measuring equipment, including upper casing, body, lower casing is integrally connected by thread, the top panel of upper casing is equipped with the power key of equipment start, TYPEC charging interface, touch screen, touch screen is electrically wired with multifunctional data acquisition card, multifunctional data acquisition card is also connected with power adapter board, rechargeable battery, 8 displacement sensors by communication cable, the side surface and bottom surface of body are laid out with flow passage window area height value measurement component, width value measurement component, flow passage window area height positioning assembly, flow passage window area exhaust edge positioning pin surface assembly.The application solves the problems of poor performance of elastic element, unstable measurement force, inaccurate measurement results and low degree of digitization in the prior art.

Description

Technical Field

[0001] This invention belongs to the field of exhaust area measurement technology for aero-engine and gas turbine guide vanes, and specifically relates to a digital turbine guide vane exhaust area measurement device. Background Technology

[0002] A turbine guide vane is an annular stator cascade structure consisting of inner and outer mounting rings, a set of guide vanes, and corresponding accessories. Its main function is to change the direction of high-temperature gas flow, expand and accelerate the gas, and convert the internal energy of the high-temperature gas into kinetic energy. The exhaust area of ​​the turbine guide vane refers to the equivalent flow cross-sectional area of ​​the cascade. Its size directly affects the temperature before and after the turbine stage, the flow field of the high-temperature gas flow, and the flow rate, thrust, speed, and fuel consumption of aero-engines and gas turbines. It is a crucial parameter determining the overall performance of aero-engines and gas turbines. By measuring and adjusting the exhaust area of ​​the turbine guide vane, the performance of aero-engines and gas turbines can be brought up to design specifications. Therefore, accurate measurement of the turbine guide vane exhaust area is a very important task in the manufacturing and assembly process of aero-engines and gas turbines.

[0003] The exhaust gas passage of aero-engine and gas turbine turbine guide vanes is approximately trapezoidal in shape. Its area is calculated using a formula after measuring the width and height of different cross-sections of the exhaust gas passage. Existing exhaust area measurement devices for aero-engine and gas turbine guide vanes mostly use lever-based measuring instruments. These instruments use multiple sets of tension springs to provide the measuring force, and a dial indicator is used to measure the width and height of different cross-sections of each passage before calculating the area. This process accumulates positioning and measurement errors, leading to inaccurate measurements. Furthermore, using multiple measuring instruments makes the measurement process cumbersome and inefficient. The measuring force of each probe depends entirely on the tension spring force. Since tension springs are not constant forces and are prone to loss of tension due to material fatigue, the measuring force becomes unstable, resulting in inconsistent and inaccurate measurement results.

[0004] During the installation and disassembly of the turbine guide vane exhaust area measurement equipment, the probes at each section remain taut and stretched under the action of tension springs, meaning the probes are in close contact with the gas flow channel surface. The turbine guide vane is a pneumatic-thermomechanical component that operates repeatedly under harsh conditions of high temperature and high pressure. To prevent high-temperature corrosion and thermal fatigue and extend the service life of the workpiece, the surface of the turbine guide vane's gas flow channel is often coated with a ceramic-based thermal barrier coating. While this coating offers excellent thermal protection, it has low tensile strength and poor plasticity and toughness. Furthermore, the ceramic-based thermal barrier coating is often applied using plasma sputtering, resulting in a large surface roughness. The probes in the turbine guide vane exhaust area measurement device are made of high-hardness, wear-resistant materials such as hard alloys to ensure dimensional accuracy and stability. During the installation and disassembly of the turbine guide vane exhaust area measurement device, the ceramic-based thermal barrier coating is subjected to compression, impact, and scratches, which can easily cause scratches, damage, and chipping.

[0005] Exhaust area measurement is typically performed on-site in the assembly workshop of aero-engines and gas turbines, and operates in four states: single-blade assembly, guide vane assembly, core engine assembly, and complete engine assembly stand. Aero-engines and gas turbines are often in sub-assembly or final assembly stages, where the assembly site conditions are complex. Existing measuring devices contain numerous long cables and involve complex interactive operations, which can lead to cable tangling, interference, and entanglement, resulting in low operator efficiency and potential safety risks during production operations. Summary of the Invention

[0006] The purpose of this invention is to provide a digital turbine guide vane exhaust area measurement device for aero-engines and gas turbines, which solves the problems of poor performance of elastic elements, unstable measurement force, and inaccurate measurement results in the prior art; scratches, damage and peeling of ceramic-based thermal barrier coatings caused by the probe; cable entanglement and interference at the assembly site, low operator efficiency, easy production operation safety risks, and low degree of digitalization.

[0007] The technical solution adopted in this invention is a digital turbine guide vane exhaust area measuring device. The upper cover, main body, and lower cover are connected as a whole by threads. The top panel of the upper cover is equipped with a power button for turning on the device, a TYPEC charging interface, and a touch screen. The touch screen is electrically connected to a multi-functional data acquisition card via a communication cable. The multi-functional data acquisition card is also connected to a power adapter board, a rechargeable battery, and eight displacement sensors via communication cables. The sides and bottom of the main body are equipped with a flow channel window area height measurement component, a width measurement component, a flow channel window area height positioning component, and a flow channel window area exhaust edge positioning pin component. A rechargeable battery is also installed on the main body.

[0008] The invention is further characterized in that,

[0009] A double slide bar assembly is installed on the threaded hole of the main body. The double slide bar assembly is mounted on the main body of the equipment via double-sided mounting brackets. The escapement buffer mechanism push rod is connected to the hollow inclined plane slider, which is embedded in the slide rail of the double slide bar assembly. The hollow inclined plane slider moves smoothly horizontally to the right on the double slide bar assembly. The floating bracket and the floating frame are rigidly connected by threads and pins, driving the vertical moving assembly to move downward as a whole. There are two through holes on the floating frame, into which two sets of floating frame linear bearing assemblies are inserted respectively, forming an interference fit. The end of the floating frame linear bearing assembly shaft has an annular groove for installing the escapement buffer mechanism horizontal moving assembly - floating frame linear bearing end face retaining ring. There are two radial set screws on the sidewalls of the two through holes on the floating frame, used to secure the floating frame linear bearing assembly to the floating frame installation position and relationship. The measuring component push rod assembly is threaded to the bottom surface of the floating frame, so the floating frame will force the width measuring component to retract quickly. The width measuring component is installed on The width measuring component is mounted on a pin, which is spatially parallel to the push rod. The pin is fixed to the main body and serves to connect and pass through the width measuring component. The push rod is installed in the cylindrical hole of the main body, forming a gapless sliding fit, and can reciprocate along the axial direction of the cylindrical hole. When the push rod is released, the lever, under the action of the permanent magnet of the measuring component and the hydraulic cylinder, forces the vertical moving assembly (which includes a floating frame, pin, bearing assembly, floating bracket, and end face spring retainer; the lower part of the floating bracket is rigidly connected to the floating frame through a threaded and pin-fitted connection, and the upper part of the floating bracket has a pin hole in which the pin is assembled, realizing the connection between the floating bracket and the bearing assembly. The end face spring retainer is locked in the annular groove at one end of the pin to ensure that the pin and bearing assembly will not fall off the floating bracket during the movement) to move upward. The width measuring component and the height measuring component open, and each probe gradually returns to the measuring position. During this process, the hydraulic cylinder drives the rack to generate assistance along the axial direction of the push rod.

[0010] The escapement buffer mechanism specifically adopts a push rod + inclined plane / guide wheel + damping gear / rack slow release structure. During the disengagement phase, the one-way gear damper does not provide damping; instead, it moves rapidly under the action of the push rod. The escapement buffer mechanism push rod pushes the hollow inclined plane slider to move smoothly horizontally to the right on the double slide rod assembly. The double slide rod assembly is firmly installed on the threaded holes of the equipment body by symmetrical double-sided mounting brackets. Through the inclined plane principle, it drives the vertical movement assembly (floating frame, pin of the vertical movement assembly of the escapement buffer mechanism, bearing assembly of the vertical movement assembly of the escapement buffer mechanism, floating bracket of the vertical movement assembly of the escapement buffer mechanism, end of the vertical movement assembly of the escapement buffer mechanism). The entire floating frame (including the spring retainer) moves downwards. The floating bracket and floating frame are rigidly connected by threads and pins, causing the entire floating frame to move downwards as well. Two sets of floating frame linear bearing kits ensure the smoothness and linearity of the floating frame's vertical movement. The end face retaining rings of the floating frame linear bearings act as travel limiters. The measuring component's pushrod kit is threaded to the bottom surface of the floating frame. Therefore, the floating frame forces the width measuring components (flow channel window area nn cross-sectional width measuring component, flow channel window area pp cross-sectional width measuring component, flow channel window area mm cross-sectional width measuring component, flow channel window area qq cross-sectional width measuring component) to quickly retract their measuring angle. The moving frame will also synchronously drive the retraction wedge, forcing the height measurement component to quickly close its measuring angle. This means the width and height probes will rapidly detach from the blade surface, reducing the labor intensity of the measurement operation, shortening the measurement cycle, and improving the efficiency of measurement preparation. During the reset phase, the hand releases the push rod, and the lever, under the action of the permanent magnet of the measurement component and the hydraulic assist cylinder, forces the vertical movement assembly (floating frame, pin of the escapement buffer mechanism vertical movement assembly, bearing assembly of the escapement buffer mechanism vertical movement assembly, floating bracket of the escapement buffer mechanism vertical movement assembly, and end face spring retainer of the escapement buffer mechanism vertical movement assembly) to move upwards. The width measurement component (flow...) The measuring components for the cross-sectional width values ​​of the flow channel window area (nn), (pp), (mm), and (qq) and height values ​​are used. As the measuring angles open, each probe gradually returns to its measuring position. During this process, a hydraulic cylinder drives a rack to provide axial assistance along the push rod. Due to the reverse damping effect of the unidirectional damping gear (with built-in damping silicone oil), the contact between the measuring point and the turbine blade surface is gentle and slowly damped, minimizing impact and stress at the microscopic level. This ensures that the exhaust area measurement process does not compromise the integrity and high adhesion of the thermal barrier coating on the flow channel surface. Finally, after a certain displacement is achieved, the damping gear returns to its original position, releasing the damping control over the measuring point. This allows the measuring point to adhere tightly to the blade surface solely by the rebound force of the elastic element (the magnetic force of the permanent magnet in the measuring component), achieving real-time and accurate feedback of the measured displacement.

[0011] There are four sets of width measurement components (divided into four sections), including the width measurement component for the flow channel window area nn section, the width measurement component for the flow channel window area pp section, the width measurement component for the flow channel window area mm section, and the width measurement component for the flow channel window area qq section. All four components are mounted on the pin shaft of the width measurement component.

[0012] Each width measurement component consists of lever A and lever B. Lever A and lever B have hollowed-out, pre-embedded neodymium iron boron permanent magnets 46 and 46 and 46 respectively. The magnetic poles of the permanent magnets repel each other, forming a measuring force. Lever A and lever B transmit the cross-sectional width displacement to the sensor through wear-resistant blocks of width measurement components A and B, thus avoiding wear on lever A and lever B.

[0013] The height measurement component has a pre-embedded neodymium iron boron height measurement component - permanent magnet B, which is embedded in the long groove of the equipment body with a height measurement component - permanent magnet A. The magnetic poles of the height measurement component - permanent magnet B and the height measurement component - permanent magnet A repel each other, forming a measuring force.

[0014] The beneficial effects of this invention are that the digital turbine guide vane exhaust area measurement device, through electromechanical soft integration technology, realizes cordless, lightweight, and digital measurement of turbine guide vane exhaust area. Utilizing the elastic element based on the mutual repulsion principle of permanent magnets, it achieves near-constant force and accurate measurement of the turbine guide vane exhaust area. Simultaneously, through an escapement buffer mechanism, it ensures that the measuring point does not contact the flow channel surface during the installation or disassembly of the measuring device, avoiding sliding friction wear of the thermal barrier coating. Through a Bluetooth near-field communication module, it enables cordless operation of the turbine guide vane exhaust area measurement. Based on the handheld embedded touch screen, it achieves visualized and guided operation of the turbine guide vane exhaust area. Attached Figure Description

[0015] Figure 1 This is a schematic diagram illustrating the measurement of the exhaust area height and width values ​​of the turbine guide vane for aero engines and gas turbines, as well as the cross-sectional location and measurement principle.

[0016] Figure 2 This is a schematic diagram of the overall structure of the digital turbine guide exhaust area measuring device of the present invention;

[0017] Figure 3 This is a schematic diagram of the electrical structure of the digital turbine guide exhaust area measuring device of the present invention;

[0018] Figure 4This is a schematic diagram of the electrical wiring of the digital turbine guide exhaust area measuring device of the present invention;

[0019] Figure 5 This is a schematic diagram of the mechanical positioning structure of the digital turbine guide exhaust area measuring device of the present invention;

[0020] Figure 6 This is a schematic diagram of the mechanical escapement buffer structure in the digital turbine guide exhaust area measuring device of the present invention;

[0021] Figure 7 This is a detailed structural diagram of the magnetic repulsion width measurement component in the digital turbine guide exhaust area measurement device of the present invention (taking the nn section width measurement component as an example, the structures of the pp, mm, and qq section width measurement components are similar).

[0022] Figure 8 This is a schematic diagram of the magnetic repulsion lever tension height value measuring component in the digital turbine guide exhaust area measuring device of the present invention;

[0023] Figure 9 This is a schematic cross-sectional view of the escapement buffer mechanism in the digital turbine guide exhaust area measuring device of the present invention;

[0024] Figure 10 This is a schematic diagram of the mechanical-inclined slider + gear rack structure in the escapement buffer mechanism of the digital turbine guide exhaust area measuring device of the present invention;

[0025] Figure 11 This is a schematic diagram of the installation structure of the escapement buffer mechanism and width and height measuring components in the digital turbine guide exhaust area measuring device of the present invention;

[0026] Figure 12 This is a schematic diagram of the assembly positions of the turbine guide exhaust area width measurement component and displacement sensor in the digital turbine guide exhaust area measurement device of the present invention;

[0027] Figure 13 This is a schematic diagram of the installation of the height measurement component, displacement sensor and main body in the digital turbine guide exhaust area measurement device of the present invention;

[0028] Figure 14 This is a schematic diagram of the measuring structure and the measuring station of the guide component in the digital turbine guide exhaust area measuring device of the present invention.

[0029] In the diagram, 1. Power button; 2. Type-C charging port; 3. Touch screen; 4. Upper cover; 5. Cover fixing screw; 6. Lower cover; 7. Displacement sensor set screw; 8. Flow channel window area and height measurement component; 9. Flow channel window area (nn) cross-sectional width measurement component; 10. Flow channel window area (pp) cross-sectional width measurement component; 11. Flow channel window area (mm) cross-sectional width measurement component; 12. Flow channel window area (qq) cross-sectional width measurement component; 13. Flow channel window area and height positioning. Components; 14. Flow channel window area exhaust edge positioning pin assembly; 15. Width value measurement assembly pin shaft; 16. Escapement buffer mechanism hydraulic buffer cylinder mounting hole; 17. Power adapter plate; 18. Displacement sensor; 19. Rechargeable battery; 20. Multifunctional data acquisition card; 21. Spaced hexagonal prism; 22. mm cross-section blade back positioning point assembly; 23. mm cross-section blade back positioning point assembly; 24. Body; 25. Escapement buffer mechanism push rod; 26. Floating frame; 27. Double-sided mounting support kit; 28. Middle 29. Empty inclined plane slider; 30. Pin; 31. Bearing assembly; 32. Floating bracket; 33. End face spring retainer; 34. Double slide bar assembly; 35. Hydraulic buffer cylinder; 36. Measuring component tappet assembly; 37. Rack; 38. One-way gear damper; 39. Floating frame linear bearing assembly; 40. Retaining ring; 41. Retracting drive wedge; 42. Lever A wear-resistant block; 43. Lever A; 44. Lever B wear-resistant block; 45. Lever B measuring rod; 46. Lever B permanent magnet; 47. Measuring... 48. Ball head; 49. Lever A permanent magnet; 50. Lever embedded jewel bearing; 51. Permanent magnet A; 52. Permanent magnet B; 53. Lever; 54. Pin; 55. Height measurement component - height probe; 56. Jewel bearing; 57. Wear-resistant block; 58. mm cross-sectional width measurement component cross-sectional position positioning sleeve; 59. qq cross-sectional width measurement component cross-sectional position positioning sleeve; 60. nn cross-sectional width measurement component cross-sectional position positioning sleeve. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0031] This invention relates to a digital turbine guide vane exhaust area measurement device, combined with Figure 1The upper cover 4, the main body 24, and the lower cover 6 are connected as a whole by threads. The top panel of the upper cover 4 is equipped with a power button 1 for turning on the device, a TYPEC charging interface 2, and a touch screen 3. The touch screen 3 is electrically connected to a multi-function data acquisition card 20 via a communication cable. The multi-function data acquisition card 20 is also connected to a power adapter board 17, a rechargeable battery 19, and eight displacement sensors 18 via communication cables. The sides and bottom of the main body 24 are equipped with a flow channel window area and height measurement component 8, a width measurement component, a flow channel window area and height positioning component 13, and a flow channel window area exhaust edge positioning pin component 14. The rechargeable battery 19 is also installed on the main body 24. Due to the space constraints of the mechanical system, eight high-precision displacement sensors 18 are arranged around it, and the whole assembly is connected by screws.

[0032] A double slide bar assembly 33 is installed on the threaded hole of the main body 24. The double slide bar assembly 33 is installed on the main body 24 through the double-sided mounting bracket assembly 27. The escapement buffer mechanism push rod 25 is connected to the hollow inclined slide block 28. The hollow inclined slide block 26 is embedded in the slide rail of the double slide bar assembly 31. The hollow inclined slide block 28 moves smoothly horizontally to the right on the double slide bar assembly 33. The floating bracket 31 and the floating frame 26 are rigidly connected by threads and pins, driving the vertical movement assembly to move downward as a whole. The floating frame linear bearing assembly 38 of the two sets of escapement buffer mechanism vertical movement assemblies (where the floating frame 26 has two through holes, and the two sets of floating frame linear bearing assembly 38 are inserted into them respectively, the cylindrical surface of the outer shell of the floating frame linear bearing assembly 38 forms an interference fit with the hole of the floating frame 26, in order to prevent the floating frame linear bearing assembly 38 from being inserted into the hole. During movement, slippage occurs. The end of the floating frame linear bearing assembly 38 has an annular groove. A retaining ring 39 is installed on the end face of the floating frame linear bearing of the horizontal moving assembly of the escapement buffer mechanism. The floating frame 26 has two through holes with radial set screws on the side walls to secure the floating frame linear bearing assembly 38 and the floating frame 26. The installation position and relationship between the floating frame linear bearing assembly 38 and the floating frame 26 ensure the smoothness and straightness of the vertical movement of the floating frame 26. The retaining ring 39 on the end face of the floating frame linear bearing acts as a travel limit. The measuring component push rod assembly 35 of the vertical moving assembly of the escapement buffer mechanism is threaded to the bottom surface of the floating frame 26. Therefore, the floating frame 26 will force the width measuring component to retract quickly. The width measuring component is installed on the width measuring component pin 15. The pin 15 and the push rod 25 are spatially parallel. The pin 15 is fixed to the body 24 and does not move. The push rod 25, which serves to connect and thread the width measurement component, is installed inside the cylindrical hole of the body 24, forming a gapless sliding fit. It can reciprocate along the axial direction of the cylindrical hole. When the push rod 25 is released, the lever, under the action of the permanent magnet of the measurement component and the hydraulic cylinder 34, forces the vertical moving assembly (which includes a floating frame 26, a pin 29, a bearing assembly 30, a floating bracket 31, and an end face spring retainer 32; the lower part of the floating bracket 31 is rigidly connected to the floating frame 26 through a threaded and pin-fitted connection, and the upper part of the floating bracket 31 has a pin hole in which the pin 29 is assembled) The floating bracket 31 and the bearing assembly 30 are connected. The end face spring retainer 32 is locked in the annular groove at one end of the pin 29 to ensure that the pin 29 and the bearing assembly 30 will not fall off the floating bracket 31 during the movement. The vertical moving assembly includes the floating frame 26, the pin 29, the bearing assembly 30, the floating bracket 31, the end face spring retainer 32, the width value measuring component, and the height value measuring component 8. The probes gradually return to the measuring position. During this period, the rack 36 of the escapement buffer mechanism horizontal moving assembly is driven by the hydraulic booster cylinder 34 to generate axial assistance along the push rod 25.

[0033] Figure 6This is a schematic diagram of the mechanical escapement buffer structure of a new type of digital turbine guide vane exhaust area measurement device. The escapement buffer mechanism is designed to automatically detach the measuring point during the installation or disassembly of the device, preventing it from contacting the machine parts and avoiding sliding friction that could cause wear on the thermal barrier coating on the blade surface.The escapement buffer mechanism specifically adopts a push rod + inclined plane / guide wheel + damping gear / rack slow release structure. During the disengagement phase, the one-way gear damper 37 does not provide damping and moves rapidly under the action of the push rod 25. The escapement buffer mechanism push rod 25 pushes the hollow inclined plane slider 28 to move smoothly horizontally to the right on the double slide rod assembly 33. The double slide rod assembly 33 is firmly installed on the threaded holes of the equipment body 24 by the symmetrical double-sided mounting support assemblies 27. Through the inclined plane principle, it drives the vertical movement assembly (floating frame 26, pin 29 of the vertical movement assembly of the escapement buffer mechanism, bearing assembly 30 of the vertical movement assembly of the escapement buffer mechanism, floating bracket 31 of the vertical movement assembly of the escapement buffer mechanism, and end of the vertical movement assembly of the escapement buffer mechanism). The face spring retainer 32) moves downward as a whole. The floating bracket 31 and the floating frame 26 are rigidly connected by threads and pins. The floating frame 26 will also move downward as a whole. Two sets of floating frame linear bearing kits 38 ensure the smoothness and straightness of the vertical movement of the floating frame 26. The end face retainer 39 of the floating frame linear bearings acts as a stroke limiter. The measuring component push rod kit 35 is threaded to the bottom surface of the floating frame 26. Therefore, the floating frame 26 will force the width measuring components (flow channel window area nn cross-sectional width measuring component 9, flow channel window area pp cross-sectional width measuring component 10, flow channel window area mm cross-sectional width measuring component 11, flow channel window area qq cross-sectional width measuring component 12) to quickly retract the measuring angle. Simultaneously, the floating frame 26 will also drive the retraction wedge 40 to force the height measurement component 8 to quickly retract its measuring angle, that is, the width and height probes will quickly detach from the blade surface, reducing the labor intensity of the measurement operation, compressing the measurement cycle, and improving the efficiency of measurement preparation. During the reset phase, the hand releases the push rod 25, and the lever, under the action of the permanent magnet of the measurement component and the hydraulic assist cylinder 34, forces the vertical movement assembly (floating frame 26, pin 29 of the escapement buffer mechanism vertical movement assembly, bearing assembly 30 of the escapement buffer mechanism vertical movement assembly, floating bracket 31 of the escapement buffer mechanism vertical movement assembly, and end face spring retainer 32 of the escapement buffer mechanism vertical movement assembly) to move upward, and the width measurement component (flow channel window) will move upward. The measuring components 9 (area nn cross-sectional width value measurement component), 10 (flow channel window area pp cross-sectional width value measurement component), 11 (flow channel window area mm cross-sectional width value measurement component), 12 (flow channel window area qq cross-sectional width value measurement component), and 8 (height value measurement component) measure the opening angle. Each probe gradually returns to the measurement position. During this process, the hydraulic assist cylinder 34 drives the rack 36 to generate axial assistance along the push rod 25. Due to the reverse damping effect of the one-way damping gear 37 (with built-in damping silicone oil) of the escapement buffer mechanism horizontal moving kit, the process of the measuring point contacting the turbine blade surface is a slow, high-damping, and gentle contact. At the microscopic level, the impact force and stress are minimized, so that the exhaust area measurement process no longer affects the high integrity and high adhesion of the thermal barrier coating on the flow channel surface.Ultimately, once a certain displacement is achieved, the one-way gear damper 37 returns to its original position and releases its damping control over the measuring point, allowing the measuring point to adhere tightly to the blade surface solely by the rebound force of the elastic element (the magnetic force of the permanent magnet in the measuring component), thus achieving real-time and accurate feedback of the measured displacement.

[0034] There are four sets of width measurement components (divided into four sections), including the width measurement component 9 for the flow channel window area nn section, the width measurement component 10 for the flow channel window area pp section, the width measurement component 11 for the flow channel window area mm section, and the width measurement component 12 for the flow channel window area qq section. All four components are mounted on the width measurement component pin 15.

[0035] Each width measurement component consists of lever A42 and lever B44. Lever A42 and lever B44 have hollowed-out NdFeB permanent magnets 46 and 48 embedded in them. The magnetic poles of permanent magnets 46 and 48 repel each other, forming a measuring force. Lever A42 and lever B44 transmit the cross-sectional width displacement to displacement sensor 18 through wear-resistant blocks 41 and 43 of the width measurement components, thus avoiding wear on levers A42 and lever B44.

[0036] The flow channel window area height value measuring component 8 (lever) has a pre-embedded neodymium iron boron height value measuring component permanent magnet B51, which is embedded in the long slot of the equipment body 5 with a height value measuring component permanent magnet A50. The permanent magnets of the height value measuring component B51 and the permanent magnet of the height value measuring component A50 repel each other, forming a measuring force.

[0037] This digital turbine guide vane exhaust area measurement device is a highly integrated electromechanical and software system, generally divided into mechanical, electrical, and software subsystems. The invention will now be described in detail with reference to the accompanying drawings and specific implementation schemes.

[0038] Figure 1 This document provides a schematic diagram of the height and width values ​​of the exhaust area of ​​the turbine guide vane, as well as the cross-sectional positions. According to the design requirements for measuring the exhaust area of ​​the guide vane, to measure the exhaust area S of the guide vane, the average width W and height H of the four cross-sections (nn, pp, mm, qq) in each channel should be measured. Then, the equivalent exhaust area of ​​the turbine guide vane channel is obtained by calculating the area of ​​the trapezoid.

[0039] Figure 2This is a schematic diagram of the overall structure of the digital turbine guide vane exhaust area measurement device. The device's exterior consists of an upper cover (4), cover fixing screws (5), a lower cover (6), a displacement sensor set screw (7), and other electromechanical auxiliary components. The upper cover (4) and lower cover (6) are connected as a whole by threads. The device provides good overall protection, with only the interactive operation, measurement, and positioning components exposed to support the measurement work. The displacement sensor set screw (7) is used to radially lock the displacement sensor; the screw end is exposed for easy maintenance and adjustment. The top surface of the device is a user-friendly control interface, featuring a power button (1), a Type-C charging port (2), and a touchscreen (3) for convenient browsing and operation of measurement tasks. The equipment has flow channel window area height measurement components 8, width measurement components (flow channel window area nn cross-sectional width measurement component 9, flow channel window area pp cross-sectional width measurement component 10, flow channel window area mm cross-sectional width measurement component 11, flow channel window area qq cross-sectional width measurement component 12), and equipment positioning components (flow channel window area height positioning component 13, flow channel window area exhaust edge positioning pin surface component 14). The positioning component levers are connected to the width measurement component pin shaft 15 and rotate around this shaft. The escapement buffer mechanism hydraulic buffer cylinder mounting hole 16 is used for the installation of the hydraulic buffer cylinder, facilitating disassembly and maintenance. The equipment body is made of lightweight alloy material and can be operated with one hand. By pressing with the index finger, the equipment can be easily installed and removed from the guide flow channel without damage during measurement operations.

[0040] Figure 3 This is a schematic diagram of the electrical structure of the digital turbine guide vane exhaust area measurement device. The electrical structure adopts a tower-style stacking method, with the touch screen 3 (human-machine interface), power adapter board 17, rechargeable battery 19 (rechargeable polymer lithium battery), and multi-functional data acquisition card 20 arranged sequentially from top to bottom. Around the perimeter, constrained by the mechanical system space, eight displacement sensors 18 (high-precision displacement sensors) are arranged. The entire electrical structure is mounted on the device housing 4 using screws and supports (spaced hexagonal prisms 21). The electrical system can realize the functions of guidance, high-precision measurement, display, touch interaction, data storage, and cordless network transmission of data throughout the turbine guide vane exhaust area measurement process.

[0041] Figure 4This is a schematic diagram of the electrical wiring for this digital turbine guide vane exhaust area measurement device. All electrical modules are connected around the multi-functional data acquisition card 20. The touchscreen 3 is electrically connected to the multi-functional data acquisition card 20 via a 4-pin power and communication cable, enabling area measurement data acquisition, calculation, interaction, and touch control functions. The power adapter board 17 is electrically connected to the multi-functional data acquisition card 20 via a 3-pin power and communication cable, enabling hardware power-on / off control and a charging port. The rechargeable battery 19 is electrically connected to the multi-functional data acquisition card 20 via a 2-pin power cable, enabling DC power supply. The eight displacement sensors 18 are electrically connected to the multi-functional data acquisition card 20 via a 4-pin power and communication cable, enabling real-time displacement data acquisition.

[0042] Figure 5 This is a schematic diagram of the mechanical positioning structure of a new type of digital turbine guide vane exhaust area measurement device. The mechanical positioning structure -m is mounted and fixed on the main body 24. Because the cold-state equivalent exhaust area of ​​the turbine guide vane is measured at a fixed point, the mechanical positioning structure of the measurement device follows the six-point positioning principle in geometric space, based on the parameter requirements of relevant design technical documents, to ensure positioning accuracy and stability. Two precision cylindrical pins and two small planes (exhaust edge positioning pin surface assembly 14) at the exhaust edge R of the turbine blade assembly are used to achieve its positioning. Positioning is achieved by a precision ball head pin (flow channel window area height positioning point assembly 13) on the inner side of the turbine blade assembly rim plate. Positioning is achieved by a precision ball joint pin (mm cross-section blade back positioning point assembly 22) on the back of the turbine blade assembly. Positioning is now complete, and the measuring body has achieved precise six-point positioning of the turbine blade assembly.

[0043] Figure 6This is a schematic diagram of the mechanical escapement buffer structure of a new type of digital turbine guide vane exhaust area measurement device. The escapement buffer mechanism is designed to automatically detach the measuring point during the installation or disassembly of the device, preventing it from contacting the machine parts and avoiding sliding friction that could cause wear on the thermal barrier coating on the blade surface. The escapement buffer mechanism specifically adopts a push rod + inclined plane / guide wheel + damping gear / rack slow release structure. During the disengagement phase, the one-way gear damper 37 does not provide damping. Under the action of the push rod, the escapement buffer mechanism moves rapidly. The push rod 25 pushes the hollow inclined plane slider 28 of the horizontal moving assembly of the escapement buffer mechanism to move smoothly to the right on the double slide rod assembly 33 of the horizontal moving assembly. The double slide rod assembly 33 is firmly installed on the threaded holes of the equipment body 24 by the symmetrical double-sided mounting bracket 27. Through the inclined plane principle, it drives the vertical moving assembly (floating frame 26, pin 29 of the vertical moving assembly of the escapement buffer mechanism, bearing assembly 30 of the vertical moving assembly of the escapement buffer mechanism, floating bracket 31 of the vertical moving assembly of the escapement buffer mechanism, and end face spring retainer 32 of the vertical moving assembly of the escapement buffer mechanism) to move downwards as a whole. The floating bracket 31 and the floating frame 26 are... With rigid thread and pin connections, the floating frame 26 will also move downwards as a whole. Two sets of floating frame linear bearing kits 38 ensure the smoothness and straightness of the vertical movement of the floating frame 26. The retaining ring 39 on the end face of the floating frame linear bearings serves as a stroke limiter. The measuring component push rod kit 35 is threadedly connected to the bottom surface of the floating frame 26. Therefore, the floating frame 26 will force the width measuring components (flow channel window area nn section width measuring component 9, flow channel window area pp section width measuring component 10, flow channel window area mm section width measuring component 11, flow channel window area qq section width measuring component 12) to quickly retract their measuring angles. The floating frame 26 will also simultaneously force the height measuring component 8 to quickly retract its measuring angles through the retraction drive wedge 40. That is, the width and height measuring heads quickly detach from the blade surface, reducing the labor intensity of the measurement operation, compressing the measurement cycle, and improving the efficiency of measurement preparation.During the reset phase, the escapement buffer mechanism push rod 25 is released by hand. Under the action of the permanent magnet of the measuring component and the hydraulic booster cylinder 34 of the escapement buffer mechanism horizontal movement kit, the escapement buffer mechanism push rod 25 forces the drive vertical movement kit (floating frame 26, pin 29 of the escapement buffer mechanism vertical movement kit, bearing kit 30 of the escapement buffer mechanism vertical movement kit, floating bracket 31 of the escapement buffer mechanism vertical movement kit, and end face spring retainer 32 of the escapement buffer mechanism vertical movement kit) to move upward. The width value measuring component (flow channel window area nn cross-sectional width value measuring component 9, flow channel window area pp cross-sectional width value measuring component 9) is then activated. The measuring components 10, 11, 12, and 8 (including the flow channel window area (mm) and cross-sectional width measurement components 11, 12, and 8 respectively) and height measurement components open their measuring angles, and each probe gradually returns to its measuring position. During this process, the hydraulic assist cylinder 34 drives the rack 36 to generate axial assistance along the escapement buffer mechanism push rod 25. Due to the reverse damping effect of the one-way gear damper (with built-in damping silicone oil), the process of the measuring point contacting the turbine blade surface is a slow, high-damping, and gentle contact, minimizing impact and stress at the microscopic level. This ensures that the exhaust area measurement process no longer interferes with the high integrity and high adhesion of the flow channel surface thermal barrier coating. Finally, after a certain displacement is achieved, the one-way gear damper 37 returns to its original position, releasing the damping control on the measuring point. This allows the measuring point to rely solely on the rebound force of the elastic element (the magnetic force of the permanent magnet in the measuring component) to tightly adhere to the blade surface, achieving real-time and accurate feedback of the measured displacement.

[0044] Figure 7This is a schematic diagram of the width measurement component structure of a new type of digital turbine guide vane exhaust area measurement device. The width measurement components (flow channel window area nn section width measurement component 9, flow channel window area pp section width measurement component 10, flow channel window area mm section width measurement component 11, and flow channel window area qq section width measurement component 12) are lever assemblies that measure four sections (nn, pp, mm, qq), and are mounted on the width measurement component pin 15. Taking the nn section width measurement component as an example, the pp, mm, and qq section width measurement components have similar structures. During measurement, the measurement data is transmitted approximately 1:1 to the displacement sensor 18 mounted on the device body 24 via the wear-resistant block 41 of lever A in the width measurement component. The displacement sensor 18 then transmits the data to the multi-functional data acquisition card 20 for processing. The width measurement component consists of lever A 42 and lever B 44. This lever structure ensures that the measurement points of the lever B measuring rod 45 and the measuring ball head 47 of the width measurement component are located on the same section. This device measures two points on the flow channel surface with the same cross-section, and obtains the width data of these points using lever B, measuring rod 45, and measuring ball head 47. Levers with different cross-sections employ different structural parameters to meet the design requirements for exhaust area measurement. This equipment fully utilizes the space of the measuring levers, embedding neodymium iron boron permanent magnets (NdFeB) in levers A42 and B44 respectively, to the permanent magnet 46 of lever B and the permanent magnet 48 of lever A in the width measurement component. Utilizing the principle of magnetic repulsion, this achieves a torque counter-torsion effect around the pin 15 between the measuring levers, resulting in a compact, constant-force, and long-life torsional rebound measuring lever. Lever assemblies A42 and B44 transmit the cross-sectional width displacement to the displacement sensor 18 via wear-resistant blocks 41 and 43 of lever A and B. The levers embedded in the width measurement component have embedded jewel bearings 49 to prevent wear on the inner holes of levers A42 and B44, maintaining lever positioning accuracy during rotation.

[0045] Figure 8This is a schematic diagram of a permanent magnet repulsive lever tension height measurement component. The height measurement component (lever) has a pre-embedded neodymium iron boron permanent magnet B 51, and a permanent magnet A 50 is embedded in the long slot of the device body 24. Utilizing the principle of magnetic repulsion, the measuring lever generates a torque counter-torsion effect around the pin 53 of the height measurement component. The jewel bearing 55 of the height measurement component is embedded in the lever to avoid wear on the inner hole of the precision lever 52, maintaining the lever's positioning accuracy during rotation. This achieves a compact, constant force, long-life torsional rebound of the measuring lever. The height displacement is transmitted to the displacement sensor 18 through the wear-resistant block 56 of the height measurement component, preventing wear on the precision lever 52. The cross-sectional width measurement component positioning sleeves 57, 58, 59, and 59 provide positioning protection for the corresponding cross-sectional width measurement components.

[0046] Figure 9 This is a cross-sectional schematic diagram of the escapement buffer mechanism in the digital turbine guide exhaust area measuring device of the present invention, which shows in detail the mechanical escapement buffer structure and its motion principle.

[0047] Figure 10 This is a schematic diagram of the mechanical-inclined slider + gear rack structure in the escapement buffer mechanism of the digital turbine guide exhaust area measuring device of the present invention. It shows in detail the structure and motion principle of the gear rack, hydraulic buffer, and one-way damping gear linear motion mechanism.

[0048] Figure 11 This is a schematic diagram of the installation structure of the escapement buffer mechanism and the width and height measuring components in the digital turbine guide exhaust area measuring device of the present invention, which shows in detail the installation structure, installation position and spatial layout of the width and height measuring components.

[0049] Figure 12This is a schematic diagram of the assembly positions of the turbine guide exhaust area width measurement components and sensors in the digital turbine guide exhaust area measurement device of the present invention. It shows in detail the assembly position relationship and structure of the width measurement components and sensors. The width measurement components (flow channel window area nn section width measurement component 9, flow channel window area pp section width measurement component 10, flow channel window area mm section width measurement component 11, flow channel window area qq section width measurement component 12) are maintained and controlled by the axial cross-sectional spacing of the width measurement components (flow channel window area nn section width measurement component 9, flow channel window area pp section width measurement component 10, flow channel window area mm section width measurement component 11, flow channel window area qq section width measurement component 12) through the interval graphite annular cross-sectional position positioning sleeve 57, qq cross-sectional position positioning sleeve 58, pp cross-sectional position positioning sleeve 59, and nn cross-sectional position positioning sleeve 60.

[0050] Figure 13 This is a schematic diagram of the installation of the height measurement component, displacement sensor and body in the digital turbine guide exhaust area measurement device of the present invention, which shows in detail the installation structure and spatial relationship of the height measurement component, displacement sensor and body.

[0051] Figure 14 This is a schematic diagram of the measurement structure and guide component measurement station in the digital turbine guide exhaust area measurement device of the present invention, which shows in detail the relationship between the measurement structure, sensor and guide.

[0052] Elements that can replace technical features:

[0053] Traditional guide vane exhaust area measuring devices rely on mechanical display readings and manual readings, which are prone to large human errors, have low digitalization levels, uncontrollable quality characteristics, require highly experienced personnel, and are difficult to integrate with workshop digital and information systems.

[0054] Traditional guide vane exhaust area measurement devices have poor usability, complex and bulky mechanical structures, high labor intensity, many factors affecting measurement error, and are difficult to analyze for accuracy.

[0055] Traditional guide vane exhaust area measuring devices use a simple tension spring as the elastic element for their elastic mechanism. However, due to issues with material, size, installation, and usage, this elastic mechanism is often criticized, severely impacting the usability and lifespan of the guide vane exhaust area measuring system.

[0056] Traditional guide exhaust area measuring devices contain numerous and long cables and complex interactive operations, which can lead to cable tangling, interference, and entanglement, resulting in low operator efficiency and potential safety risks in production operations.

[0057] During the installation or removal of traditional guide vane exhaust area measuring devices, the measuring points rub against and come into contact with the flow channel surfaces of turbine guide vane components, which can easily cause wear and peeling of the thermal barrier coating.

[0058] Principle Analysis:

[0059] Utilizing the six-point positioning principle and combining it with the lever principle to convert the measuring point positions, each measuring point is led out from the guide exhaust channel to an easily measurable location at a 1:1 ratio, solving the problem of acquiring measuring point data in confined spaces. Relying on a precision damping gear and rack driven escapement mechanism, the measuring points are disengaged during equipment installation or disassembly, preventing contact with machine parts. Furthermore, the ball-head measuring points use a precision ball bearing mechanism to minimize sliding friction and prevent wear on the blade surface or coating. Through material selection (high-strength lightweight alloy), equal-strength weight reduction design, and precision machining, the handheld portion of the measuring body is miniaturized and lightweight. Following the guide exhaust... The area contact measurement mechanism, in order to ensure that the probe at the end of the measuring lever can truly contact and provide feedback on the spatial position of the flow channel surface during the measurement process, requires the measuring lever to rely on the elastic force of the elastic mechanism to react on the blade flow channel surface, achieving a tight fit. The quality of the design and selection of the measuring elastic mechanism directly affects the usability of the guide vane exhaust area measurement system. Traditional guide vane exhaust area measurement systems simply use tension springs as reaction elements. Due to problems with materials, dimensions, installation, and usage, the original elastic mechanism has been widely criticized, seriously affecting the usability and lifespan of the guide vane exhaust area measurement system; according to the required sensing... This technology applies digital measurement techniques to the acquisition, processing, transmission, reception, reprocessing, display, and storage of analog signals. It is an electrical design integrating sensors, shaping and filtering, A / D conversion, a microprocessor (MCU), a touchscreen, a wireless transmission module, and storage. The probe displacement is transmitted to the displacement sensor via a lever mechanism. The displacement sensor converts the displacement into an analog electrical signal, which is then fed into the shaping and filtering system. The shaping and filtering system processes and amplifies the analog electrical signal to provide a reliable voltage acquisition signal for the system. The A / D data acquisition module then samples the processed and amplified analog signal to obtain the voltage signal. The data is processed and calculated by the MCU, and the final required data is displayed on the touch screen in real time. Users can perform guided and graphical measurement operations on the touch screen. After the data is submitted and saved, an industrial-grade ceramic Bluetooth wireless transmission chip module is used to achieve controlled cordless data transmission. The transmission power and electromagnetic leakage are strictly controlled, and the wireless data transmission range is precisely controlled within 5 meters. The MCU schedules the wireless transmission module to transmit the data to the PC for reception, storage, statistics, and analysis. Finally, the data is output and stored through the display screen. This allows for intuitive monitoring of the dynamic changes of the measured data and data query, statistics, and report output.

[0060] Innovation points:

[0061] The innovation of this invention lies in achieving cordless, lightweight, and digital measurement of the exhaust area of ​​a turbine guide vane through electromechanical soft integration technology. It utilizes an elastic element based on the mutual repulsion principle of permanent magnets to achieve near-constant force and accurate measurement of the exhaust area of ​​the turbine guide vane. At the same time, through an escapement buffer mechanism, the measuring point is prevented from contacting the flow channel surface during the installation or disassembly of the measuring device, avoiding sliding friction wear of the thermal barrier coating. The near-field Bluetooth communication module enables cordless operation of the turbine guide vane exhaust area measurement. Based on the handheld embedded touch screen, the turbine guide vane exhaust area measurement is visualized and guided.

[0062] Working principle:

[0063] The user presses and holds the hardware power button for three seconds to power on the device and enable it to complete its own inspection task initialization (the user has already entered the inspection task information in advance), and loads the inspection task information into memory for later use.

[0064] The user holds the device with one or both hands. When the index finger presses the escapement buffer mechanism push rod 25, the device moves rapidly. The push rod 25 pushes the hollow inclined slide block 28 to move smoothly horizontally to the right on the double slide block assembly 33. The double slide block assembly 33 is securely mounted on the threaded holes of the device body 24 by the double-sided mounting bracket assemblies 27. Through the inclined plane principle, the vertical movement assembly (floating frame 26, pin 29 of the vertical movement assembly of the escapement buffer mechanism, bearing assembly 30 of the vertical movement assembly of the escapement buffer mechanism, floating bracket 31 of the vertical movement assembly of the escapement buffer mechanism, and end face spring retainer 32 of the vertical movement assembly of the escapement buffer mechanism) moves downwards as a whole. The floating bracket 31 and the floating frame 26 are rigidly connected by threads and pins. The floating frame 26 will also... The entire structure moves downwards. Two sets of floating frame linear bearing kits 38 ensure the smoothness and linearity of the vertical movement of the floating frame 26. The retaining rings 39 on the end faces of the floating frame linear bearings serve as stroke limiters. The measuring component push rod kit 35 is threaded to the bottom surface of the floating frame 26. Therefore, the floating frame 26 will force the width measuring components (flow channel window area nn section width measuring component 9, flow channel window area pp section width measuring component 10, flow channel window area mm section width measuring component 11, flow channel window area qq section width measuring component 12) to retract quickly. The floating frame 26 will also simultaneously force the height measuring component 8 to retract quickly through the retraction drive wedge block 40. That is, each width and height measuring head quickly detaches from the blade surface.

[0065] The user smoothly places the entire device inside the turbine guide channel window. Relying on the exhaust side positioning pin assembly 14, the height positioning point assembly 13, and the mm cross-section blade back positioning point assembly 23, the device is positioned precisely at six points based on the turbine blade assembly exhaust side R and the inner side of the turbine blade assembly edge plate.

[0066] After the user places the entire device stably inside the turbine guide channel window, they release the push lever 25. Under the action of the permanent magnet of the measuring component and the hydraulic assist cylinder 34, the lever forces the drive vertical movement assembly (floating frame 26, pin 29 of the escapement buffer mechanism vertical movement assembly, bearing assembly 30 of the escapement buffer mechanism vertical movement assembly, floating bracket 31 of the escapement buffer mechanism vertical movement assembly, and end face spring retainer 32 of the escapement buffer mechanism vertical movement assembly) to move upward. This causes the width measurement assembly (channel window area nn cross-sectional width measurement assembly 9, channel window area pp) to move upward. The cross-sectional width measurement component 10, the flow channel window area (mm) cross-sectional width measurement component 11, the flow channel window area (qq) cross-sectional width measurement component 12, and the height measurement component 8 are opened. Each probe gradually returns to the measurement position. During this process, the hydraulic booster cylinder 34 drives the rack 36 to generate axial assistance along the escapement buffer mechanism push rod 25. Finally, when a certain displacement is exceeded, the damping gear 37 returns to release the damping control of the measuring point, so that the measuring point relies only on the elastic element rebound force (the magnetic force of the permanent magnet of the measuring component) to tightly fit the blade surface, realizing real-time and accurate measurement and feedback of the displacement.

[0067] Users can access the embedded system within the touchscreen 3, execute measurement commands, and the sensors will accurately measure and feedback various width and height displacement values. After calculation, the exhaust area value of the turbine guide window is obtained and displayed on the screen. As needed, operations such as saving, archiving, statistical analysis, and wireless data transmission can be performed.

[0068] After the user completes the measurement of the current window's exhaust area value according to the requirements, when it is necessary to stop the measurement or urgently need to measure the area of ​​the next window, the user needs to press the escapement buffer mechanism push rod 25 with their index finger to quickly move it. The escapement buffer mechanism push rod 25 pushes the hollow inclined plane slider 28 to move smoothly to the right on the double slide rod assembly 33. The double slide rod assembly 33 is firmly installed on the threaded hole of the equipment body 24 by the double-sided mounting support assembly 27. Through the inclined plane principle, it drives the vertical movement assembly (floating frame 26, pin 29 of the vertical movement assembly of the escapement buffer mechanism, bearing assembly 30 of the vertical movement assembly of the escapement buffer mechanism, floating bracket 31 of the vertical movement assembly of the escapement buffer mechanism, and end face spring retainer 32 of the vertical movement assembly of the escapement buffer mechanism) to move downward as a whole. Among them, the floating bracket 31 and the floating frame 26 are rigidly connected by threads and pins. The floating frame 26 also The entire structure moves downwards. Two sets of floating frame linear bearing kits 38 ensure the smoothness and straightness of the vertical movement of the floating frame 26. The end face retaining rings 39 of the floating frame linear bearings serve as stroke limiters. The measuring component push rod kit 35 is threaded to the bottom surface of the floating frame 26. Therefore, the floating frame 26 will force the width measuring components (flow channel window area nn section width measuring component 9, flow channel window area pp section width measuring component 10, flow channel window area mm section width measuring component 11, flow channel window area qq section width measuring component 12) to quickly retract. Simultaneously, the floating frame 26 will also force the height measuring component 8 to quickly retract through the retraction drive wedge block 40. That is, each width and height measuring head quickly detaches from the blade surface. The user can simultaneously and smoothly hold the equipment and disassemble the entire equipment within the turbine guide flow channel window.

[0069] After completing the measurement task, users can use the touchscreen 3 to perform statistical analysis of measurement records, view reports, and transmit data via Bluetooth cordless.

[0070] When users are not using the device, they can use the touchscreen power module to softly shut down the device, or press and hold the hardware power button for three seconds to hard shut down the device.

[0071] Example

[0072] This invention relates to a digital turbine guide vane exhaust area measurement device, combined with Figure 1The upper cover 4, the main body 24, and the lower cover 6 are connected as a whole by threads. The top panel of the upper cover 4 is equipped with a power button 1 for turning on the device, a TYPEC charging interface 2, and a touch screen 3. The touch screen 3 is electrically connected to a multi-function data acquisition card 20 via a communication cable. The multi-function data acquisition card 20 is also connected to a power adapter board 17, a rechargeable battery 19, and eight displacement sensors 18 via communication cables. The sides and bottom of the main body 24 are equipped with a flow channel window area and height measurement component 8, a width measurement component, a flow channel window area and height positioning component 13, and a flow channel window area exhaust edge positioning pin component 14. The rechargeable battery 19 is also installed on the main body 24. Due to the space constraints of the mechanical system, eight high-precision displacement sensors 18 are arranged around it, and the whole assembly is connected by screws.

[0073] A double slide bar assembly 33 is installed on the threaded hole of the main body 24. The double slide bar assembly 33 is installed on the main body 24 through the double-sided mounting bracket assembly 27. The escapement buffer mechanism push rod 25 is connected to the hollow inclined slide block 28. The hollow inclined slide block 26 is embedded in the slide rail of the double slide bar assembly 31. The hollow inclined slide block 28 moves smoothly horizontally to the right on the double slide bar assembly 33. The floating bracket 31 and the floating frame 26 are rigidly connected by threads and pins, driving the vertical movement assembly to move downward as a whole. The floating frame linear bearing assembly 38 of the two sets of escapement buffer mechanism vertical movement assemblies (where the floating frame 26 has two through holes, and the two sets of floating frame linear bearing assembly 38 are inserted into them respectively, the cylindrical surface of the outer shell of the floating frame linear bearing assembly 38 forms an interference fit with the hole of the floating frame 26, in order to prevent the floating frame linear bearing assembly 38 from being inserted into the hole. During movement, slippage occurs. The end of the floating frame linear bearing assembly 38 has an annular groove. A retaining ring 39 is installed on the end face of the floating frame linear bearing of the horizontal moving assembly of the escapement buffer mechanism. The floating frame 26 has two through holes with radial set screws on the side walls to secure the floating frame linear bearing assembly 38 and the floating frame 26. The installation position and relationship between the floating frame linear bearing assembly 38 and the floating frame 26 ensure the smoothness and straightness of the vertical movement of the floating frame 26. The retaining ring 39 on the end face of the floating frame linear bearing acts as a travel limit. The measuring component push rod assembly 35 of the vertical moving assembly of the escapement buffer mechanism is threaded to the bottom surface of the floating frame 26. Therefore, the floating frame 26 will force the width measuring component to retract quickly. The width measuring component is installed on the width measuring component pin 15. The pin 15 and the push rod 25 are spatially parallel. The pin 15 is fixed to the body 24 and does not move. The push rod 25, which serves to connect and thread the width measurement component, is installed inside the cylindrical hole of the body 24, forming a gapless sliding fit. It can reciprocate along the axial direction of the cylindrical hole. When the push rod 25 is released, the lever, under the action of the permanent magnet of the measurement component and the hydraulic cylinder 34, forces the vertical moving assembly (which includes a floating frame 26, a pin 29, a bearing assembly 30, a floating bracket 31, and an end face spring retainer 32; the lower part of the floating bracket 31 is rigidly connected to the floating frame 26 through a threaded and pin-fitted connection, and the upper part of the floating bracket 31 has a pin hole in which the pin 29 is assembled) The floating bracket 31 and the bearing assembly 30 are connected. The end face spring retainer 32 is locked in the annular groove at one end of the pin 29 to ensure that the pin 29 and the bearing assembly 30 will not fall off the floating bracket 31 during the movement. The vertical moving assembly includes the floating frame 26, the pin 29, the bearing assembly 30, the floating bracket 31, the end face spring retainer 32, the width value measuring component, and the height value measuring component 8. The probes gradually return to the measuring position. During this period, the rack 36 of the escapement buffer mechanism horizontal moving assembly is driven by the hydraulic booster cylinder 34 to generate axial assistance along the push rod 25.

[0074] Each width measurement component consists of lever A42 and lever B44. Lever A42 and lever B44 have hollowed-out NdFeB permanent magnets 46 and 48 embedded in them. The magnetic poles of permanent magnets 46 and 48 repel each other, forming a measuring force. Lever A42 and lever B44 transmit the cross-sectional width displacement to displacement sensor 18 through wear-resistant blocks 41 and 43 of the width measurement components, thus avoiding wear on levers A42 and lever B44.

[0075] The flow channel window area height value measuring component 8 (lever) has a pre-embedded neodymium iron boron height value measuring component permanent magnet B51, which is embedded in the long slot of the equipment body 5 with a height value measuring component permanent magnet A50. The permanent magnets of the height value measuring component B51 and the permanent magnet of the height value measuring component A50 repel each other, forming a measuring force.

Claims

1. A digital turbine guide vane exhaust area measuring device, characterized in that, The upper cover (4), the main body (24), and the lower cover (6) are connected as a whole by threads. The top panel of the upper cover (4) is equipped with a power button (1) for turning on the device, a TYPEC charging interface (2), and a touch screen (3). The touch screen (3) is electrically connected to the multi-function data acquisition card (20) through a communication cable. The multi-function data acquisition card (20) is also connected to the power adapter board (17), the rechargeable battery (19), and 8 displacement sensors (18) through a communication cable. The sides and bottom of the main body (24) are arranged with flow channel windows with a high area. The device body (24) is equipped with a rechargeable battery (19), a double slide rod assembly (33) on the threaded hole of the device body (24), and the double slide rod assembly (33) is mounted on the device body (24) through a double-sided mounting bracket assembly (27). The escapement buffer mechanism push rod (25) is connected to the hollow inclined plane slider (28), and the hollow inclined plane slider (28) is embedded in the double slide rod assembly. On the slide of the rod assembly (33), the hollow inclined slider (28) moves smoothly horizontally to the right on the double slide rod assembly (33). The floating bracket (31) and the floating frame (26) are rigidly connected by threads and pins, driving the vertical moving assembly to move downward as a whole. The vertical moving assembly includes the floating frame (26). The floating bracket (31) and the floating frame (26) are rigidly connected by threads and pins. The upper part of the floating bracket (31) has a pin hole, in which the pin shaft (29) is assembled, realizing the connection between the floating bracket (31) and the bearing assembly (30). End face The spring retainer (32) is inserted into the annular groove at one end of the pin (29). The floating frame (26) has two through holes, and two sets of floating frame linear bearing kits (38) are inserted into them respectively to form an interference fit. The end of the floating frame linear bearing kit (38) has an annular groove, which is used to install the escapement buffer mechanism horizontal moving kit - floating frame linear bearing end face retainer (39). The floating frame (26) has two through holes with radial set screws on the side walls, which are used to fasten the floating frame linear bearing kit (38) and the floating frame (26) in the installation position and relationship.The measuring component push rod assembly (35) is threaded to the bottom surface of the floating frame (26). Therefore, the floating frame (26) will force the width measuring component to retract quickly. The width measuring component is installed on the width measuring component pin (15), in which the width measuring component pin (15) and the push rod (25) are spatially parallel. The width measuring component pin (15) is fixed on the body (24) and does not move, serving to connect and pass through the width measuring component. The push rod (25) is installed in the cylindrical hole of the equipment body (24) to form a gapless sliding fit, which can slide along the cylindrical hole. Axial reciprocating motion: The hand releases the push rod (25), and the lever, under the action of the permanent magnet of the measuring component and the hydraulic assist cylinder (34), forces the vertical moving assembly to move upward. The width and height measuring components (8) open, and each probe gradually returns to its measuring position. During this process, the hydraulic assist cylinder (34) drives the rack (36) to generate axial assistance along the push rod (25). Due to the reverse damping effect of the one-way damping gear, the contact between the measuring point and the turbine blade surface is slow, high-damped, and gentle, minimizing impact and stress at the microscopic level.

2. The digital turbine guide vane exhaust area measuring device according to claim 1, characterized in that, The drive vertical movement kit includes a floating frame (26), a floating bracket (31) and a floating frame (26) which are rigidly connected by threads and pins. The upper part of the floating bracket (31) has a pin hole, in which a pin shaft (29) is assembled. To achieve the connection between the floating bracket (31) and the bearing assembly (30), the end face spring retainer (32) is engaged in the annular groove at one end of the pin (29).

3. The digital turbine guide vane exhaust area measuring device according to claim 2, characterized in that, The width measurement components consist of four sets, divided into four sections, including the width measurement component (9) for the flow channel window area nn section, the width measurement component (10) for the flow channel window area pp section, the width measurement component (11) for the flow channel window area mm section, and the width measurement component (12) for the flow channel window area qq section. The width measurement components (9), (10), (11), and (12) for the flow channel window area nn section are all installed on the width measurement component pin (15).

4. The digital turbine guide vane exhaust area measuring device according to claim 3, characterized in that, Each width measurement component consists of lever A (42) and lever B (44). Lever A (42) and lever B (44) have hollowed-out pre-embedded neodymium iron boron width measurement component - lever B permanent magnet (46) and width measurement component - lever A permanent magnet (48). The magnetic poles of lever B permanent magnet (46) and lever A permanent magnet (48) repel each other, forming a measuring force. Lever A (42) and lever B (44) transmit the cross-sectional width displacement to displacement sensor (18) through the wear-resistant block (41) of width measurement component - lever A and the wear-resistant block (43) of width measurement component - lever B, thus avoiding wear of lever A (42) and lever B (44).

5. The digital turbine guide vane exhaust area measuring device according to claim 4, characterized in that, The height measurement component (8) has a pre-embedded neodymium iron boron height measurement component - permanent magnet B (51), which is embedded in the long groove of the equipment body (5) with a height measurement component - permanent magnet A (50). The magnetic poles of the height measurement component - permanent magnet B (51) and the height measurement component - permanent magnet A (50) attract each other to form a measuring force.

Images