Measuring and positioning method and tool for gas turbine stationary blade film hole

Abstract

The invention relates to the technical field of gas turbine stationary blade measurement, in particular to a gas turbine stationary blade film hole measuring and positioning method and tool. The driving motor controls the arc-shaped plate to rotate clockwise, in the process, the cleaning piece cleans the surface of the stationary blade of the gas turbine firstly, and then the tester conducts detection along the cleaning track of the cleaning piece; in the process, the cleaning piece can clean the gas film hole in the surface of the gas turbine stationary blade, and bristles on the cleaning piece can be embedded into the gas film hole in the contact process, so that the gas film hole is cleaned, and the problem that the detection precision is reduced due to the fact that the gas film hole is blocked is avoided; the detection and positioning precision of the gas film hole in the stationary blade of the gas turbine is further improved; after detection is completed, the tester is reset, and the springs in the sliding grooves enable the first arc-shaped rod and the second arc-shaped rod to be reset.

Description

Technical Field

[0001] The invention relates to the technical field of gas turbine stationary blade measurement, in particular to a method and tooling for measuring and positioning air film holes of gas turbine stationary blades. Background Art

[0002] As an important power equipment, gas turbine plays a key role in energy conversion and power output. Gas turbine stator blades and stator blade air film holes are important components of gas turbines. Their performance and quality directly affect the overall performance of gas turbines. The gas turbine stator is a stationary part of the gas turbine, usually installed in the compressor, combustion chamber, turbine and other parts; in the compressor, the stator plays the role of guiding the airflow, increasing the air pressure and controlling the direction of the airflow. By rationally designing the shape and angle of the stator, the air can enter the next stage of the compressor more evenly, improving the efficiency and stability of the compressor; The film holes on the gas turbine stator blades are tiny holes opened on the surface of the stator blades, mainly used to achieve film cooling. The film cooling technology forms a layer of cooling air film on the surface of the stator blades to separate the high-temperature gas from the base material of the stator blades, thereby reducing the temperature of the stator blades and improving their high-temperature resistance and service life. The design parameters of the film holes, such as the hole diameter, hole spacing, hole distribution and angle, have an important influence on the film cooling effect. Therefore, after the production of gas turbine stator blades is completed, it is very important to locate and detect the stator blade holes on the gas turbine. In the existing process of detecting the gas turbine stator blade air film holes, visual inspection is usually used, in which inspectors use simple tools such as magnifying glasses and endoscopes to directly observe the appearance of the air film holes; use the naked eye or a magnifying glass to check whether there are obvious defects such as cracks, deformation, blockage, etc. on the surface of the air film holes; the endoscope can penetrate into the air film holes to check the condition of the hole walls; the advantages are simple operation, low cost, and the ability to quickly discover more obvious defects; but the disadvantages are also obvious, the detection accuracy is limited, it is difficult to detect tiny cracks or internal defects, and the detection results are greatly affected by the experience and subjective factors of the inspectors.

[0003] In summary, in order to solve the technical problem raised in this article, the present invention proposes a method and tooling for measuring and positioning the film holes of gas turbine stator blades. Summary of the invention

[0004] The present invention provides a measuring and positioning tool for gas turbine stator blade air film holes; the positioning tool comprises a measuring platform, and the measuring platform comprises: Body, A clamping tool, which is arranged inside the machine body and is used to clamp the workpiece; A driving plate, which is arranged inside the machine body, and the middle part of the upper end of the driving plate is connected to the driving motor arranged at the upper end of the machine body; A telescopic device, two in number, is arranged at the lower sides of both ends of the driving plate and is located outside the clamping tooling; A second telescopic device, which is arranged on a lower side of each telescopic device and close to one end of the clamping tooling; There are two connection blocks, each of which is arranged at the output end of the second telescopic device; The two ends of the arc-shaped plate are respectively rotatably connected to the two connecting blocks, and the middle part of the arc-shaped plate is convex toward the end away from the clamping tooling; the measuring instrument is slidably connected to the arc-shaped plate.

[0005] As a preferred solution of the present application, a through groove is opened in the middle of the arc plate, and in the initial state, the measuring instrument is located in the middle of the through groove.

[0006] As a preferred solution of the present application, a sliding groove is provided on the inner wall of the through groove, and two sliding shafts are slidably connected at both ends of the sliding groove, and a spring is arranged between the sliding shaft and the sliding groove; an arc rod 1 is sleeved on the sliding shaft close to the measuring instrument, and an arc rod 2 is sleeved on the sliding shaft away from the measuring instrument, and the ends of the arc rod 1 and the arc rod 2 that are close to each other are hinged through a rotating shaft, and sleeve plates are arranged at both ends of the rotating shaft, and cleaning parts are arranged on the outer walls of the sleeve plates.

[0007] As a preferred solution of the present application, a slide rail is provided at the lower end of the connecting block, the lower end of the connecting block is slidably connected to the slide rail, and the telescopic end of the telescopic device 2 is connected to the slide rail.

[0008] As a preferred solution of the present application, a moving block is slidably connected inside the through-groove, and the measuring instrument is arranged on the moving block.

[0009] As a preferred solution of the present application, a micro motor is arranged inside the moving block, and a driving wheel is arranged on the micro motor; a driving ring is arranged at the outer end of the moving block, the inner ring of the driving ring is slidably connected to the two ends of the moving block, and the arc plate is also located in the inner ring of the driving ring, a driving groove is opened in the middle of the inner ring of the driving ring, the driving wheel is located inside the driving groove, and the measuring instrument is arranged on the outer wall of the driving ring.

[0010] As a preferred solution of the present application, rollers are provided at the upper and lower ends of the moving block, and the rollers between the upper and lower ends of the moving block are in contact with the inner wall of the driving ring.

[0011] A method for measuring and positioning film holes of gas turbine stationary blades, the method is applicable to the above-mentioned tool for measuring and positioning film holes of gas turbine stationary blades, the method comprising the following steps; S1: First, the staff opens the hatch on the fuselage, so that the control arc plate rotates 90 degrees, and the middle part of the arc plate is curved toward the end away from the clamping work; then the gas turbine stator blade is installed on the clamping fixture; then the driving motor rotates, and the driving motor drives the driving plate to rotate; S2: When the driving motor drives the driving plate to rotate, the driving plate drives the telescopic device 1 and the telescopic device 2 at both ends to rotate, and the telescopic device 2 drives the arc plate to rotate through the connecting block; so that the arc plate rotates in a circle outside the clamping tooling, and during the process, the measuring instrument on the arc plate performs positioning detection on the gas turbine stator blade and the air film hole above it; S3: During the rotation of the driving motor, the two telescopic devices are synchronously retracted upward, so that the arc plate moves upward from the lower side of the gas turbine stator blade at a uniform speed during the rotation, thereby achieving a comprehensive scanning and detection of the gas turbine stator blade and the air film holes above it, and transmitting the detection data to the display panel on the body; so that the staff can obtain accurate and specific data.

[0012] The beneficial effects of the present invention are as follows: The driving motor controls the arc plate to rotate clockwise. During the process, the cleaning piece will first clean the surface of the gas turbine stator blade, and then the measuring instrument will detect along the cleaning track of the cleaning piece; and in this process, the cleaning piece can clean the air film holes on the surface of the gas turbine stator blade, and the bristles on the cleaning piece can be embedded in the air film holes during the contact process to clean the air film holes and avoid the problem of clogging of the air film holes, which leads to reduced detection accuracy; thereby improving the detection and positioning accuracy of the air film holes on the gas turbine stator blades; when the detection is completed, the measuring instrument is reset, and the spring in the slide groove resets the arc rod 1 and the arc rod 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional diagram of the machine body of the present invention; Figure 2 is another perspective view of the body of the present invention; Figure 3 yes Figure 2 Front view of the Figure 4 It is a partial cross-sectional view of the body of the present invention; Figure 5 yes Figure 4 Structural view of the middle telescopic device 1 and the curved plate; Figure 6 It is a structural view of the slide rail and the telescopic device 2 in the present invention; Figure 7 It is a structural view of the through groove in the present invention; Figure 8 is a cross-sectional view of the driving wheel and the moving block of the present invention; Fig. 9 It is a structural view of the mobile block in the present invention; Fig.10 It is a structural view of the arc rod 1 and the arc rod 2 in the present invention; Fig.11It is a structural view of the sleeve plate and the cleaning member in the present invention; Fig.12 It is a flow chart of the method in the present invention.

[0014] In the figure: body 1, clamping tool 11, driving plate 12, driving motor 121, telescopic device 1 13, telescopic device 2 14, connecting block 141, arc plate 142, measuring instrument 2, through groove 15, slide groove 151, arc rod 1 152, arc rod 2 153, rotating shaft 154, sleeve plate 155, cleaning piece 156, slide rail 157, moving block 16, driving wheel 161, driving ring 162, driving groove 163, roller 164. DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0016] Embodiment 1:

[0017] like Figures 1 to 11 As shown; a measuring and positioning tool for gas turbine blade film holes; the positioning tool comprises a measuring platform, and the measuring platform comprises: Body 1, A clamping tool 11, which is arranged inside the machine body 1 and is used to clamp a workpiece; A driving plate 12 is disposed inside the machine body 1, and the middle portion of the upper end thereof is connected to a driving motor 121 disposed at the upper end of the machine body 1; The telescopic device 13, which is two in number, is arranged at the lower sides of both ends of the driving plate 12 and is located outside the clamping tool 11; A second telescopic device 14, which is arranged at the lower side of each telescopic device 13 and close to one end of the clamping tool 11; There are two connecting blocks 141, and each connecting block 141 is arranged at the output end of the second telescopic device 14; The arc plate 142 has two ends rotatably connected to the two connecting blocks 141, and the middle of the arc plate 142 is convex toward the end away from the clamping tool 11; the measuring instrument 2 is slidably connected to the arc plate 142; A through slot 15 is formed in the middle of the arc-shaped plate 142. In the initial state, the measuring instrument 2 is located in the middle of the through slot 15. A sliding groove 151 is provided on the inner wall of the through groove 15, and two sliding shafts are slidably connected at both ends of the sliding groove 151, and a spring is arranged between the sliding shaft and the sliding groove 151; an arc rod 152 is sleeved on the sliding shaft close to the measuring instrument 2, and an arc rod 2 153 is sleeved on the sliding shaft away from the measuring instrument 2, and the ends of the arc rod 152 and the arc rod 2 153 that are close to each other are hinged by a rotating shaft 154, and sleeve plates 155 are arranged at both ends of the rotating shaft 154, and a cleaning piece 156 is arranged on the outer wall of the sleeve plate 155.

[0018] The specific workflow is as follows: When in use, the staff first opens the hatch on the body 1, and then places the gas turbine stator blade on the clamping tool 11. The clamping work of the present application is a fixture in the prior art, which can be a three-jaw chuck, and is not specifically limited. The gas turbine stator blade is clamped on the clamping tool 11, and then the staff controls the control panel on the body 1. The control panel controls the controller inside the body 1 to control the work of the body 1; During the inspection of the gas turbine stationary blade, in the initial state, the output end of the telescopic device 13 is located at the lower part of the internal cavity of the body 1, so that the telescopic device 2 14 and the connecting block 141 are located on the outside of the work stand; and the arc plate 142 is controlled to rotate. The arc plate 142 is in a vertical state in the initial state, and the middle part is curved upward. The power source for the rotation of the arc plate 142 comes from the driving device set on one side of the connecting block 141, and the driving device can be a motor; so that the arc plate 142 is controlled to rotate 90°, and the middle part of the arc plate 142 is curved toward the end away from the clamping work; then the gas turbine stationary blade is installed on the clamping fixture 11; Then the driving motor 121 rotates, the driving motor 121 drives the driving plate 12 to rotate, the driving plate 12 drives the telescopic devices 13 at both ends to rotate, the telescopic devices 13 drive the two telescopic devices 2 14 to rotate, and the telescopic devices 2 14 drive the arc plate 142 to rotate through the connecting block 141; so that the arc plate 142 rotates in the outer circumference of the clamping fixture 11, and during the process, the measuring instrument 2 on the arc plate 142 performs positioning detection on the gas turbine stator blades and the air film holes above them; During the rotation of the driving motor 121, the two telescopic devices are synchronously and slowly retracted upward, so that the arc plate 142 is uniformly moved upward during the rotation, so that the measuring instrument 2 is uniformly moved from the lower side of the gas turbine to the upper side during the rotation of the outer ring of the gas turbine stator blade, so as to achieve a comprehensive scanning and detection of the gas turbine stator blade and the air film holes above it, and transmit the detection data to the display panel on the body 1, so that the staff can obtain accurate and specific data; In addition, in the process of inspecting the gas turbine stator blades, since the curvature of the surface of the gas turbine is different, in order to obtain accurate data during the inspection of the gas turbine stator blades, the staff can control the telescopic device 2 14 to extend and retract the lower end of the telescopic device 1 13; when the telescopic device 2 14 is extended, the two telescopic devices 2 14 will push the connecting block 141, and the two connecting blocks 141 will approach each other, so that the two connecting blocks 141 squeeze the arc plate 142. Since the arc plate 142 is made of elastic material, specifically elastic steel plate, the arc plate When the arc plate 142 is squeezed by the connecting blocks 141 at both ends, the curvature of the arc plate 142 increases; conversely, when the two telescopic devices 14 are contracted, the two connecting blocks 141 move away from each other, so that the two connecting blocks 141 pull the two ends of the arc plate 142, and the curvature of the arc plate 142 decreases; thereby, by controlling the curvature of the arc plate 142, the measuring instrument 2 on the arc plate 142 can be suitable for gas turbine stators of different sizes to a certain extent; in this process, a through groove 15 is opened on the arc plate 142 to reduce the bending resistance of the arc plate 142; The measuring instrument 2 is slidably connected inside the through-groove 15, and the sliding connection mode between the measuring instrument 2 and the through-groove 15 is a slide rail 157 slider mechanism in the prior art, and in the initial state, the measuring instrument 2 is located in the middle of the through-groove 15; a slide groove 151 is provided on the inner wall of the through-groove 15, two slide shafts are provided inside the slide groove 151, and arc rod 1 152 and arc rod 2 153 are provided above the slide shaft according to the distance between the slide shaft and the measuring instrument 2, and the distance between the arc rod 1 152 and the measuring instrument 2 is close; and the ends of the arc rod 2 153 and the arc rod 1 152 that are close to each other are hinged by a rotating shaft 154, and sleeve plates 155 are provided at both ends of the rotating shaft 154, and a cleaning member 156 is provided on the outer ring of the sleeve plate 155, and the cleaning member 156 can be an electrostatic brush; When the arc plate 142 rotates upward to inspect the gas turbine stator blade, the staff moves the measuring instrument 2 toward the arc rod 1 152, so that the measuring instrument 2 will first squeeze the arc rod 1 152. The arc rod 1 152 is pushed by the measuring instrument 2, and the arc rod 1 152 drives the sliding shaft close to the measuring instrument 1 to move toward the arc rod 2 153. During the process, the gap between the arc rod 1 152 and the arc rod 2 153 gradually becomes smaller, and then the hinge of the arc rod 1 152 and the arc rod 2 153 approaches the position of the gas turbine stator blade. During the process, the sleeve plate 155 approaches the position of the gas turbine stator blade; until the cleaning piece 156 on the outside of the sleeve plate 155 contacts the outside of the gas turbine stator blade; Then the driving motor 121 controls the arc plate 142 to rotate clockwise, and during the process the cleaning piece 156 will first clean the surface of the gas turbine stator blades, and then the measuring instrument 2 will detect along the cleaning track of the cleaning piece 156; and in this process, the cleaning piece 156 can clean the air film holes on the surface of the gas turbine stator blades, and the bristles on the cleaning piece 156 can be embedded in the air film holes during the contact process to clean the air film holes and avoid the problem of clogging of the air film holes, which leads to reduced detection accuracy; thereby improving the detection and positioning accuracy of the air film holes on the gas turbine stator blades; when the detection is completed, the measuring instrument 2 is reset, and the spring in the slide groove 151 resets the arc rod 1 152 and the arc rod 2 153.

[0019] Embodiment 2:

[0020] like Figures 3 to 11 As shown; the lower end of the connecting block 141 is provided with a slide rail 157, the lower end of the connecting block 141 is slidably connected to the slide rail 157, and the telescopic end of the telescopic device 14 is connected to the slide rail 157; A moving block 16 is slidably connected inside the through slot 15, and the measuring instrument 2 is arranged on the moving block 16; A micro motor is arranged inside the moving block 16, and a driving wheel 161 is arranged on the micro motor; a driving ring 162 is arranged at the outer end of the moving block 16, and the inner ring of the driving ring 162 is slidably connected to the two ends of the moving block 16, and the arc plate 142 is located in the inner ring of the driving ring 162 at the same time, and a driving groove 163 is opened in the middle of the inner ring of the driving ring 162, and the driving wheel 161 is located inside the driving groove 163, and the measuring instrument 2 is arranged on the outer wall of the driving ring 162; Rollers 164 are provided at the upper and lower ends of the moving block 16 , and the rollers 164 between the upper and lower ends of the moving block 16 are in contact with the inner wall of the driving ring 162 .

[0021] The specific workflow is as follows: On the basis of the above embodiment, a slide rail 157 is provided at the lower end of the connection block 141, and the lower end of the connection block 141 is slidably connected to the slide rail 157, so that the telescopic end of the telescopic device 14 is connected to the slide rail 157; Since the shape of the gas turbine stator blade is mostly an arc-shaped structure, that is, one side is an arc-shaped convexity, and the opposite side of the arc-shaped convexity is an arc-shaped concaveity; when the gas turbine stator blade is tested, the distance between the measuring instrument 2 and the surface at the arc-shaped convexity and the surface at the arc-shaped concaveity is different, resulting in a slight deviation in the test result; When the staff is testing the arc-shaped gas turbine stator blade, first, the bending direction of the arc plate 142 is away from the end of the clamping tool 11, so that the measuring instrument 2 on the arc plate 142 detects the convex surface of the gas turbine stator blade. During the process, the concave surface of the arc plate 142 corresponds to the convex surface of the gas turbine stator blade. The detection method is: the driving motor 121 drives the driving plate 12 to swing back and forth and rise, so that the measuring instrument 2 on the arc plate 142 rises in a uniform Z-shaped trajectory, and the convex surface of the gas turbine stator blade is detected until the measuring instrument 2 and the arc plate 142 move to the upper end of the gas turbine stator blade; then the telescopic device 13 continues to shrink, and the horizontal height of the arc plate 142 and the measuring instrument 2 is higher than the upper end of the gas turbine stator blade; then the staff controls the connecting block 141 to slide on the slide rail 157, and the connection method between the connecting block 141 and the slide rail 157 is the electric slide rail 157 slider in the prior art; Meanwhile, a moving block 16 is arranged inside the through groove 15, and a driving ring 162 is arranged on the moving block 16, the inner ring of the driving ring 162 contacts the upper and lower ends of the moving block 16, and a micro motor is arranged inside the moving block 16 so that the micro motor drives the driving wheel 161, a driving groove 163 is provided on the inner ring of the driving ring 162, and the driving wheel 161 is located inside the driving groove 163; In the above description, when the horizontal height of the arc plate 142 and the measuring instrument 2 is higher than the upper end of the gas turbine stator blade, the staff controls the connecting block 141 to slide on the slide rail 157, so that the connecting block 141 slides toward the concave surface of the gas turbine stator blade. After the sliding is completed, the telescopic device 13 extends downward, and the arc plate 142, the connecting block 141 and the measuring instrument 2 move downward. At this time, the convex surface of the arc plate 142 corresponds to the concave surface of the gas turbine stator blade; then the micro motor controls the driving wheel 161 to rotate, and the driving wheel 161 meshes with the inner wall of the driving groove 163 inside the driving ring 162. The meshing method of the driving wheel 161 and the inner wall of the driving groove 163 can be gear tooth block meshing; when the driving wheel 161 rotates, the driving wheel 161 is driven The ring 162 is driven, and the inner side of the driving ring 162 rotates at the two ends of the moving block 16; the driving ring 162 rotates 180°, and the measuring instrument 2 faces the concave surface of the gas turbine stator blade. Then the extension device extends downward at a uniform speed, and the driving motor 121 rotates back and forth, so that the measuring instrument 2 descends in a Z-shape at a uniform speed; until it moves to the lower end of the gas turbine stator blade, the convex and concave surfaces of the gas turbine can be accurately detected, thereby improving the detection accuracy; and by arranging rollers 164 at the upper and lower ends of the moving block 16, the rollers 164 are in contact with the inner ring of the driving ring 162, so that when the driving ring 162 slides at the two ends of the moving block 16, the rollers 164 rotate to reduce the friction between the driving ring 162 and the moving block 16.

[0022] Embodiment three:

[0023] like Fig.12A method for measuring and positioning the film holes of gas turbine stationary blades, which is applicable to the above-mentioned tooling for measuring and positioning the film holes of gas turbine stationary blades, and comprises the following steps; S1: First, the staff opens the hatch on the body 1, so that the control arc plate 142 rotates 90 degrees, and the middle part of the arc plate 142 is curved toward the end away from the clamping work; then the gas turbine stator blade is installed on the clamping tool 11; then the driving motor 121 rotates, and the driving motor 121 drives the driving plate 12 to rotate; S2: When the driving motor 121 drives the driving plate 12 to rotate, the driving plate 12 drives the telescopic device 1 13 and the telescopic device 2 14 at both ends to rotate, and the telescopic device 2 14 drives the arc plate 142 to rotate through the connecting block 141; so that the arc plate 142 rotates in the outer circumference of the clamping fixture 11, and during the process, the measuring instrument 2 on the arc plate 142 performs positioning detection on the gas turbine stator blade and the air film hole above it; S3: During the rotation of the drive motor 121, the two telescopic devices shrink upward synchronously, so that the arc plate 142 moves upward from the lower side of the gas turbine stator blade at a uniform speed during the rotation, thereby achieving a comprehensive scanning and detection of the gas turbine stator blade and the air film holes above it, and transmitting the detection data to the display panel on the body 1, so that the staff can obtain accurate and specific data.

[0024] The above shows and describes the basic principles, main features and advantages of the present invention; those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A measuring and positioning tool for gas turbine blade film holes, the positioning tool comprising a measuring platform, characterized in that: The measurement platform includes: Body, A clamping tool, which is arranged inside the machine body and is used to clamp the workpiece; A driving plate, which is arranged inside the machine body, and the middle part of the upper end of the driving plate is connected to the driving motor arranged at the upper end of the machine body; A telescopic device, two in number, is arranged at the lower sides of both ends of the driving plate and is located outside the clamping tooling; A second telescopic device, which is arranged on a lower side of each telescopic device and close to one end of the clamping tooling; There are two connection blocks, each of which is arranged at the output end of the second telescopic device; The two ends of the arc-shaped plate are respectively rotatably connected to the two connecting blocks, and the middle part of the arc-shaped plate is convex toward the end away from the clamping tooling; the measuring instrument is slidably connected to the arc-shaped plate.

2. A gas turbine blade film hole measurement and positioning tool as claimed in claim 1, characterized in that: A through slot is provided in the middle of the arc plate, and in an initial state, the measuring instrument is located in the middle of the through slot.

3. A gas turbine blade film hole measurement and positioning tool as claimed in claim 2, characterized in that: A sliding groove is provided on the inner wall of the through groove, and two sliding shafts are slidably connected at both ends of the sliding groove, and a spring is arranged between the sliding shaft and the sliding groove; an arc rod 1 is sleeved on the sliding shaft close to the measuring instrument, and an arc rod 2 is sleeved on the sliding shaft far away from the measuring instrument, and the ends of the arc rod 1 and the arc rod 2 that are close to each other are hinged through a rotating shaft, and sleeve plates are arranged at both ends of the rotating shaft, and cleaning parts are arranged on the outer walls of the sleeve plates.

4. A gas turbine blade film hole measurement and positioning tool as claimed in claim 3, characterized in that: A slide rail is arranged at the lower end of the connection block, the lower end of the connection block is slidably connected to the slide rail, and the telescopic end of the telescopic device 2 is connected to the slide rail.

5. A gas turbine blade film hole measurement and positioning tool as claimed in claim 4, characterized in that: A moving block is slidably connected inside the through groove, and the measuring instrument is arranged on the moving block.

6. A gas turbine blade film hole measurement and positioning tool as claimed in claim 5, characterized in that: A micro motor is arranged inside the moving block, and a driving wheel is arranged on the micro motor; a driving ring is arranged at the outer end of the moving block, the inner ring of the driving ring is slidably connected to the two ends of the moving block, and the arc plate is also located in the inner ring of the driving ring, a driving groove is opened in the middle of the inner ring of the driving ring, the driving wheel is located inside the driving groove, and the measuring instrument is arranged on the outer wall of the driving ring.

7. A gas turbine blade film hole measurement and positioning tool as claimed in claim 6, characterized in that: Rollers are arranged at the upper and lower ends of the moving block, and the rollers between the upper and lower ends of the moving block are in contact with the inner wall of the driving ring.

8. A method for measuring and positioning film holes of gas turbine stationary blades, the method being applicable to a tool for measuring and positioning film holes of gas turbine stationary blades as claimed in any one of claims 1 to 7, characterized in that: The method comprises the following steps: S1: First, the staff opens the hatch on the fuselage, so that the control arc plate rotates 90 degrees, and the middle part of the arc plate is curved toward the end away from the clamping work; then the gas turbine stator blade is installed on the clamping fixture; then the driving motor rotates, and the driving motor drives the driving plate to rotate; S2: When the driving motor drives the driving plate to rotate, the driving plate drives the telescopic device 1 and the telescopic device 2 at both ends to rotate, and the telescopic device 2 drives the arc plate to rotate through the connecting block; so that the arc plate rotates in a circle outside the clamping tooling, and during the process, the measuring instrument on the arc plate performs positioning detection on the gas turbine stator blade and the air film hole above it; S3: During the rotation of the driving motor, the two telescopic devices are synchronously retracted upward, so that the arc plate moves upward from the lower side of the gas turbine stator blade at a uniform speed during the rotation, thereby achieving a comprehensive scanning and detection of the gas turbine stator blade and the air film holes above it, and transmitting the detection data to the display panel on the body; so that the staff can obtain accurate and specific data.

Images