A device and method for measuring the exhaust area of ​​a single guide blade

Abstract

The present invention discloses a device and method for measuring the exhaust area of ​​a single guide blade, and belongs to the technical field of aero-engine detection. A device for measuring the exhaust area of ​​a single guide blade comprises: a base, and a fixing device and a simulation device both arranged on the base; the fixing device comprises a first positioning assembly and a second positioning assembly arranged at both ends of the base; the simulation assembly comprises a first back blade simulation block and a second back blade simulation block arranged on one side of the base, and a first basin blade simulation block, a second basin blade simulation block, a large edge plate simulation block and a small edge plate simulation block arranged on the other side of the base. The present invention can obtain the exhaust area value of a single blade to be measured by measuring, and by screening and matching multiple blades, select a set of blades whose total exhaust area value meets the requirements of the design drawing for assembly, which can effectively reduce the number of assembly and measurement of guide blades, and finally achieve one-time assembly.

Description

Technical Field

[0001] The invention relates to the technical field of aero-engine detection, and in particular to a device and a method for measuring the exhaust area of ​​a single guide blade. Background Art

[0002] Exhaust area is an important parameter of the engine. During the assembly of the guide casing assembly, a digital exhaust area measuring tool is used to measure the measurement points specified in the design drawing between adjacent guide blades. From the first group of guide blades to the last group, all measurement data are calculated according to the formula to obtain the total exhaust area value, which is compared with the theoretical area specified in the design document to determine whether it is within the tolerance range. If it is unqualified, the blades are replaced according to whether the total area value is too large or too small, and then the area value between the replaced blades is measured. The new data replaces the old data at the same position and then calculates whether the total area is qualified. If it is unqualified, continue to replace and measure until it is qualified. The current assembly and measurement method is repeated many times, has low efficiency, and a long assembly cycle. Summary of the invention

[0003] The object of the present invention is to provide a device and method for measuring the exhaust area of ​​a single guide vane, so as to solve the problems of low assembly efficiency and long assembly cycle of the guide vanes in the existing guide casing.

[0004] The technical solution of the present invention to solve the above technical problems is as follows:

[0005] A device for measuring the exhaust area of ​​a single guide blade comprises: a base, and a fixing device and a simulation device both arranged on the base;

[0006] The fixing device comprises a first positioning assembly and a second positioning assembly arranged at two ends of the base;

[0007] The simulation component includes a first back blade simulation block and a second back blade simulation block arranged on one side of the base, and a first basin side blade simulation block, a second basin side blade simulation block, a large edge plate simulation block and a small edge plate simulation block arranged on the other side of the base; the large edge plate simulation block is close to the first positioning component, and the small edge plate simulation block is close to the second positioning component.

[0008] The first positioning assembly and the second positioning assembly of the present invention respectively fix the blade to be measured to simulate the position of the blade to be measured in the guide casing. The first back blade simulation block and the second back blade simulation block are used to simulate the position of the adjacent blade located on the back side of the blade to be measured in the casing. The first basin side blade simulation block, the second basin side blade simulation block, the large edge plate simulation block and the small edge plate simulation block are used to simulate the position of the adjacent blade located on the basin side of the blade to be measured in the casing. The exhaust area of ​​the back side and basin side of the blade to be measured can be measured respectively by a digital exhaust area measuring tool, and the exhaust area value of a single blade to be measured can be obtained. By screening and matching the exhaust areas of multiple blades, a total exhaust area value of one unit that meets the requirements of the design drawing is selected for assembly, which can effectively reduce the number of assembly and measurement of the guide blades, and finally achieve one-time assembly without measuring the exhaust area during assembly, so as to shorten the production cycle and improve efficiency.

[0009] Furthermore, the first back blade simulation block and the second back blade simulation block are respectively provided with a first exhaust edge simulation surface on one side facing the middle of the base.

[0010] When the digital exhaust area measuring tool measures the exhaust area of ​​the exhaust passage on the back side of the blade to be measured, its width movable measuring head only needs to contact the exhaust edge of the adjacent blade on the back side of the blade to be measured, and the first exhaust edge simulation surface is used to simulate the section of the contact point between the width movable measuring head and the exhaust edge of the adjacent blade. Two back blade simulation blocks are set to match the two measurement points specified in the design drawing.

[0011] Furthermore, the above-mentioned first basin side blade simulation block and the second basin side blade simulation block both include a back simulation surface, a third exhaust edge simulation surface and a reference surface; the back simulation surface is formed on the side of the first basin side blade simulation block or the second basin side blade simulation block close to the middle of the base; the third exhaust edge simulation surface is formed on the top surface of the first basin side blade simulation block or the second basin side blade simulation block; the reference surface is formed on the side of the first basin side blade simulation block or the second basin side blade simulation block away from the middle of the base, and the reference surface is perpendicular to the third exhaust edge simulation surface.

[0012] When the digital exhaust area measuring tool measures the exhaust area of ​​the exhaust channel on the blade basin side to be measured, the cross positioning surface of its positioning block needs to be contacted and positioned with the exhaust edge of the adjacent blade on the blade basin side to be measured, and the third exhaust edge simulation surface and the reference surface are in contact with the cross positioning surface to simulate the position of the digital exhaust area measuring tool during operation. The two width fixed measuring heads of the digital exhaust area measuring tool need to be in contact with the back side of the adjacent blade on the blade basin side to be measured, and the back side simulation surface is used to simulate the back side of the adjacent blade on the blade basin side to be measured. At the same time, two basin side blade simulation blocks are set to match the two measurement points specified in the design drawings.

[0013] Furthermore, a large edge plate channel simulation surface is provided on the side of the large edge plate simulation block facing the middle of the base, and a small edge plate channel simulation surface is provided on the side of the small edge plate simulation block facing the middle of the base.

[0014] When the digital exhaust area measuring tool measures the exhaust area of ​​the exhaust channel on the basin side of the blade to be measured, it is necessary to measure the length value of the exhaust channel on the back side of the adjacent blade. The large edge plate channel simulation surface and the small edge plate channel simulation surface simulate the large edge plate channel surface and the small edge plate channel surface of the adjacent blade respectively, so that the length value of the exhaust channel on the back side of the adjacent blade can be obtained by measuring the distance between the large edge plate channel simulation surface and the small edge plate channel simulation surface.

[0015] Furthermore, the above-mentioned first positioning assembly includes a first positioning seat, a first limiting seat and a clamping seat; the first positioning seat is provided with a first supporting surface and an end limiting surface which are perpendicular to each other; the first limiting seat is provided with a large edge plate limiting surface; and the clamping seat is provided with a top limiting surface.

[0016] The first positioning component of the present invention is used to fix one end of the blade to be measured that is provided with a large edge plate, the end limiting surface limits the end of the blade to be measured, the large edge plate limiting surface contacts the large edge plate of the blade to be measured, and limits the circumference of the blade to be measured. The first supporting surface and the top limiting surface limit the bottom and top of the blade to be measured respectively, and finally fix it through the clamping seat to achieve the fixation of the end of the blade to be measured that is provided with the large edge plate.

[0017] Furthermore, the second positioning assembly comprises a second positioning seat, a second limiting seat and a pressing seat; the second positioning seat is provided with a second supporting surface; and the second limiting seat is provided with a small edge plate limiting surface.

[0018] The second positioning component of the present invention is used to fix one end of the blade to be measured that is provided with a small edge plate. The small edge plate limiting surface contacts the small edge plate of the blade to be measured to limit the circumference of the blade to be measured. The second supporting surface and the top limiting surface on the pressing seat limit the bottom and top of the blade to be measured respectively. Finally, the blade to be measured is fixed by the pressing seat to achieve the fixation of the end of the blade to be measured that is provided with a small edge plate.

[0019] Furthermore, the above-mentioned clamping seat includes a guide rod and a clamping block; one end of the guide rod is connected to the base, the other end of the guide rod passes through the clamping block and is provided with a knurled nut, and the guide rod sleeve is provided with a spring whose two ends are respectively in contact with the base and the clamping block; the top limit surface is formed on the bottom wall of the clamping block.

[0020] The clamping block of the present invention can slide on the guide rod, and when the knurled nut rotates, the top limit surface can be closely contacted with the top of the blade to be measured, so that the blade to be measured is fixed. When the knurled nut is loosened, the spring can bounce the clamping block, so that the clamping block is separated from the blade to be measured, which is convenient for replacing the blade to be measured.

[0021] Furthermore, a ball stud is provided on the base.

[0022] The ball stud of the present invention is used as a reference piece to detect the relative position relationship between the simulation blocks, so that the position of each simulation block is accurate.

[0023] A method for measuring the exhaust area of ​​a single guide blade based on the above-mentioned measuring device comprises the following steps:

[0024] S1: Fix the blade to be tested by a fixing device;

[0025] S2: Place the cross positioning surface of the positioning block of the digital exhaust area measuring tool on the exhaust edge of the blade to be measured; fit the fixed length measuring head to the back side large edge plate channel surface of the blade to be measured, and fit the movable length measuring head to the back side small edge plate channel surface of the blade to be measured, and measure the length dimension of the back exhaust channel; fit two fixed width measuring heads to the back of the blade to be measured, and fit two corresponding movable width measuring heads to the first back side blade simulation block and the second back side blade simulation block, and measure the width dimensions of two positions of the back exhaust channel;

[0026] S3: The digital exhaust area measuring tool calculates the exhaust area value of the back side of the blade to be measured through the length dimension of the back exhaust channel and the width dimensions of two positions of the back exhaust channel;

[0027] S4: placing the cross positioning surface of the digital exhaust area measuring tool positioning block on the top of the first basin side blade simulation block and the second basin side blade simulation block respectively; contacting the fixed length measuring head with the large edge plate simulation block, and contacting the movable length measuring head with the small edge plate simulation block, to measure the length dimension of the basin side exhaust passage; contacting the two fixed width measuring heads with the first basin side blade simulation block and the second basin side blade simulation block respectively, and contacting the two corresponding movable width measuring heads with the exhaust edges of the blades to be measured respectively, to measure the width dimensions of the basin side exhaust passage at two positions;

[0028] S5: The digital exhaust area measuring tool calculates the exhaust area value of the basin side of the blade to be measured through the length dimension of the basin side exhaust channel and the width dimensions of the two positions of the basin side exhaust channel;

[0029] S6: Add the exhaust area value on the back side of the blade to be measured and the exhaust area value on the basin side of the blade to be measured and divide the sum by 2. The obtained value is the exhaust area value of the single guide blade.

[0030] The present invention simulates the positions of the blade to be measured and the adjacent blades on both sides of the blade to be measured in the guide casing, and then uses a digital exhaust area measuring tool to conveniently and quickly measure the exhaust area values ​​of the exhaust passages on the back and basin sides of the blade to be measured. The exhaust area value of a single exhaust blade can be obtained by adding the two exhaust area values ​​and dividing them by 2, thereby solving the problem that the exhaust area value of a single guide blade cannot be measured.

[0031] When assembly is required, the exhaust area values ​​of each blade are used for screening and matching, and blades with a total exhaust area value that meets the requirements of the design drawing are selected from multiple blades for assembly, avoiding repeated replacement of blades and repeated measurements due to unqualified exhaust area values ​​during assembly, thereby shortening the assembly and measurement cycle and improving assembly efficiency.

[0032] Further, in the above step S1, the fixing method is: the bottoms of both ends of the blade to be measured are respectively placed on the first supporting surface and the second supporting surface, one end of the blade to be measured provided with a large edge plate contacts the end limit surface, the large edge plate and the small edge plate of the blade to be measured contact the large edge plate limit surface and the small edge plate limit surface respectively, the tops of both ends of the blade to be measured contact the top limit surfaces of the two clamping seats respectively, and the knurled nut is screwed to fix the blade to be measured;

[0033] In step S2, the contact mode of the two corresponding movable width measuring heads is as follows: the two corresponding movable width measuring heads are in contact with the first exhaust edge simulation surface of the first back blade simulation block and the first exhaust edge simulation surface of the second back blade simulation block respectively;

[0034] In step S4, the digital exhaust area measuring tool is installed in the following way: the cross positioning surface of the positioning block of the digital exhaust area measuring tool contacts the third exhaust edge simulation surface and the reference surface on the first basin side blade simulation block and the second basin side blade simulation block respectively; the fixed length measuring head contacts the large edge plate channel simulation surface of the large edge plate simulation block, and the movable length measuring head contacts the small edge plate channel simulation surface of the small edge plate simulation block; the two fixed width measuring heads contact the back side simulation surfaces of the first basin side blade simulation block and the second basin side blade simulation block respectively.

[0035] The present invention has the following beneficial effects:

[0036] The present invention can measure the exhaust areas of the back side and the basin side of the blade to be measured respectively through a digital exhaust area measuring tool, and can obtain the exhaust area value of a single blade to be measured. By screening and matching the exhaust areas of multiple blades, blades with a total exhaust area value of one unit that meets the requirements of the design drawing are selected for assembly, which can effectively reduce the number of assembly and measurement times of the guide blades, and finally achieve one-time assembly without measuring the exhaust area during assembly, thereby shortening the production cycle and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic structural diagram of a device for measuring the exhaust area of ​​a single guide blade of the present invention;

[0038] Figure 2 It is a structural schematic diagram of the first positioning seat of the present invention;

[0039] Figure 3It is a structural schematic diagram of the first limit seat of the present invention;

[0040] Figure 4 It is a structural schematic diagram of the pressing seat of the present invention;

[0041] Figure 5 It is a structural schematic diagram of the second positioning seat of the present invention;

[0042] Figure 6 It is a structural schematic diagram of the second limiting seat of the present invention;

[0043] Figure 7 It is a structural schematic diagram of the first back-side blade simulation block of the present invention;

[0044] Figure 8 It is a structural schematic diagram of the first basin side blade simulation block of the present invention;

[0045] Fig. 9 It is a structural schematic diagram of a large edge plate simulation block of the present invention;

[0046] Fig.10 It is a structural schematic diagram of a small edge plate simulation block of the present invention;

[0047] Fig.11 It is a schematic diagram of the structure of the measuring device of the present invention when measuring the exhaust area of ​​the blade to be measured.

[0048] In the figure: 10-base; 11-ball pin; 21-first positioning assembly; 22-second positioning assembly; 23-first positioning seat; 24-first limiting seat; 25-pressing seat; 26-second positioning seat; 27-second limiting seat; 231-first supporting surface; 232-end limiting surface; 241-large edge plate limiting surface; 251-top limiting surface; 252-guide rod; 253-pressing block; 254-knurled nut; 255-spring; 256-support rod; 261-second supporting surface ;271-small edge plate limiting surface;310-first back blade simulation block;311-first exhaust edge simulation surface;320-second back blade simulation block;330-first basin side blade simulation block;331-back simulation surface;332-third exhaust edge simulation surface;333-reference surface;340-second basin side blade simulation block;350-large edge plate simulation block;351-large edge plate channel simulation surface;360-small edge plate simulation block;361-small edge plate channel simulation surface;400-blade to be tested. DETAILED DESCRIPTION

[0049] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0050] Example

[0051] Please refer to Figure 1 A device for measuring the exhaust area of ​​a single guide blade comprises a base 10, a fixing device and a simulation device, wherein the fixing device and the simulation device are respectively mounted on the top of the base 10. A ball stud 11 is also provided on the base 10.

[0052] The fixing device includes a first positioning component 21 and a second positioning component 22, which are respectively used to fix one end of the blade 400 to be tested provided with a large edge plate and another end provided with a small edge plate, thereby simulating the position of the blade 400 to be tested in the guide casing.

[0053] The simulation device includes a first back blade simulation block 310, a second back blade simulation block 320, a first basin blade simulation block 330, a second basin blade simulation block 340, a large edge plate simulation block 350, and a small edge plate simulation block 360. The first back blade simulation block 310 and the second back blade simulation block 320 are both located on one side of the base 10, and are used to simulate the position of the adjacent blades on the back side of the blade 400 to be tested in the guide casing. The first basin blade simulation block 330, the second basin blade simulation block 340, the large edge plate simulation block 350, and the small edge plate simulation block 360 are all located on the other side of the base 10, and are used to simulate the position of the adjacent blades on the basin side of the blade 400 to be tested in the guide casing. The large edge plate simulation block 350 and the small edge plate simulation block 360 are respectively close to the first positioning assembly 21 and the second positioning assembly 22.

[0054] Please refer to Figures 2 to 6 The first positioning assembly 21 includes a first positioning seat 23, a first limiting seat 24 and a pressing seat 25. The bottom of the first positioning seat 23 is fixedly mounted on the base 10 by bolts and positioning pins, and the top of the first positioning seat 23 is provided with a notch facing the middle of the base 10, and the two mutually perpendicular sides of the notch are respectively a first supporting surface 231 and an end limiting surface 232. The first supporting surface 231 is horizontally arranged to support the blade 400 to be measured. The end limiting surface 232 is vertically arranged to limit the blade 400 to be measured in the axial direction.

[0055] The bottom of the first limit seat 24 is fixedly installed on the base 10 by bolts and positioning pins. A large edge plate limiting surface 241 is provided on the top of the first limit seat 24 close to the first positioning seat 23. The large edge plate limiting surface 241 cooperates with the large edge plate on the back side of the blade 400 to be measured, and is used to limit the blade 400 to be measured in the radial direction.

[0056] The clamping seat 25 includes a guide rod 252 and a clamping block 253. The bottom end of the guide rod 252 is connected to the base 10 through a thread, and the bottom end of the guide rod 252 is threadedly connected to a nut, and the nut contacts the base 10 to achieve the fixation of the guide rod 252 and the base 10. The top of the guide rod 252 is also threadedly connected to a knurled nut 254. The clamping block 253 is sleeved in the middle of the guide rod 252, and the clamping block 253 can slide with the guide rod 252. The bottom wall of one end of the clamping block 253 is provided with a top limiting surface 251 for limiting the top of the blade 400 to be measured, and the knurled nut 254 can also fix the blade 400 to be measured, thereby achieving the first positioning component 21 to fix the blade 400 to be measured with one end of the large edge plate. In order to facilitate the installation and removal of the blade 400 to be tested, a spring 255 is sleeved on the guide rod 252, and two ends of the spring 255 are in contact with the pressing block 253 and the base 10 respectively.

[0057] In order to improve the stability of the clamping block 253, the clamping seat 25 can also be provided with a support rod 256. The bottom end of the support rod 256 is connected to the base 10 through a thread, and the bottom end of the guide rod 252 is threadedly connected to a nut, which contacts the base 10 to achieve the fixation of the support rod 256 to the base 10, and also to achieve the height adjustment of the support rod 256. The top of the support rod 256 contacts the bottom wall of the other end of the clamping block 253. When the clamping block 253 fixes the blade 400 to be measured, the height of the support rod 256 is adjusted so that the support rod 256 effectively supports the clamping block 253, thereby preventing the clamping block 253 from being offset when the knurled nut 254 is screwed.

[0058] The second positioning assembly 22 includes a second positioning seat 26, a second limiting seat 27 and a pressing seat 25. The bottom of the second positioning seat 26 is fixedly mounted on the base 10 by bolts and positioning pins, and the top of the second positioning seat 26 is provided with a second supporting surface 261 for supporting the blade 400 to be measured. In this embodiment, in order to match the structure of the blade 400 to be measured having a small edge plate at one end, the second supporting surface 261 is arc-shaped, which matches the arc-shaped structure of the blade 400 to be measured having a small edge plate at one end, so as to better support the blade 400 to be measured.

[0059] The bottom of the second limit seat 27 is fixedly installed on the base 10 by bolts and positioning pins. A small edge plate limiting surface 271 is provided on the top of the second limit seat 27 close to the second positioning seat 26. The small edge plate limiting surface 271 cooperates with the small edge plate on the back side of the blade 400 to be measured, and is used to limit the blade 400 to be measured in the radial direction.

[0060] The pressing seat 25 in the second positioning assembly 22 has the same structure as the pressing seat 25 in the first positioning assembly 21, and is also provided with a top limiting surface 251 for limiting the top of the blade 400 to be measured, and the second positioning assembly 22 fixes the end of the blade 400 to be measured with a small edge plate through a knurled nut 254. In order to better match the arc structure of the end of the blade 400 to be measured with a small edge plate, the lower wall of the pressing block 253 is provided with a trapezoidal groove, and the top limiting surface 251 is formed with the side wall of the trapezoidal groove. Through the extrusion of the trapezoidal groove, the blade 400 to be measured can be well positioned.

[0061] Please refer to Figures 7 to 10 , the structures of the first back blade simulation block 310 and the second back blade simulation block 320 are consistent. The first back blade simulation block 310 and the second back blade simulation block 320 are both fixedly mounted on the base 10 by bolts and positioning pins, and the positions of the first back blade simulation block 310 and the second back blade simulation block 320 match the two measurement points specified in the design drawings. The tops of the first back blade simulation block 310 and the second back blade simulation block 320 are respectively provided with a first exhaust edge simulation surface 311 on one side facing the middle of the base 10, which is used to simulate the exhaust edge of the adjacent blade on the back side of the blade 400 to be measured.

[0062] The structures of the first basin side blade simulation block 330 and the second basin side blade simulation block 340 are consistent. The bottoms of the first basin side blade simulation block 330 and the second basin side blade simulation block 340 are fixedly mounted on the base 10 by screws and positioning pins, and the positions of the first basin side blade simulation block 330 and the second basin side blade simulation block 340 match the two measurement points specified in the design drawings. The first basin side blade simulation block 330 and the second basin side blade simulation block 340 are respectively provided with a back side simulation surface 331 on one side facing the middle of the base 10, which is used to simulate the back side of the adjacent blades on the basin side of the blade 400 to be measured. The tops of the first basin side blade simulation block 330 and the second basin side blade simulation block 340 are provided with a third exhaust edge simulation surface 332 and a reference surface 333, which are used to contact with the cross positioning surface of the digital exhaust area measuring tool positioning block to achieve the limit of the digital exhaust area measuring tool. The third exhaust edge simulation surface 332 is set horizontally and formed on the top wall of the first basin side blade simulation block 330 or the second basin side blade simulation block 340. The reference surface 333 is vertically arranged and formed on a side of the first basin side blade simulation block 330 or the second basin side blade simulation block 340 away from the middle of the base 10 .

[0063] The bottoms of the large edge plate simulation block 350 and the small edge plate simulation block 360 are fixedly mounted on the base 10 by screws and positioning pins, respectively, and are close to the first positioning seat 23. The tops of the large edge plate simulation block 350 and the small edge plate simulation block 360 are respectively provided with a large edge plate channel simulation surface 351 and a small edge plate channel simulation surface 361, which are arranged opposite to each other, respectively simulating the large edge plate channel surface and the small edge plate channel surface of the adjacent blade on the basin side of the blade 400 to be tested.

[0064] Please refer to Fig.11 A method for measuring the exhaust area of ​​a single guide blade based on the above-mentioned measuring device comprises the following steps:

[0065] S1: The relative position relationship between the simulation blocks is detected by the ball stud 11 to make the position of each simulation block accurate;

[0066] S2: Zero each measuring head of the digital exhaust area measuring tool on the exhaust area standard part;

[0067] S3: Place the bottoms of both ends of the blade 400 to be tested on the first support surface 231 and the second support surface 261 respectively, so that one end of the blade 400 to be tested provided with the large edge plate contacts the end limit surface 232, the large edge plate and the small edge plate of the blade 400 to be tested contact the large edge plate limit surface 241 and the small edge plate limit surface 271 respectively, and the tops of both ends of the blade 400 to be tested contact the top limit surfaces 251 of the two clamping seats 25 respectively, and screw the knurled nut 254 to fix the blade 400 to be tested;

[0068] S4: Place the cross positioning surface of the positioning block of the digital exhaust area measuring tool on the exhaust edge of the blade 400 to be measured; fit the fixed length measuring head to the back side large edge plate channel surface of the blade 400 to be measured, and fit the movable length measuring head to the back side small edge plate channel surface of the blade 400 to be measured, and measure the length dimension of the back exhaust channel; fit two fixed width measuring heads to the back of the blade 400 to be measured, and contact two corresponding movable width measuring heads with the first exhaust edge simulation surface 311 of the first back blade simulation block 310 and the second back blade simulation block 320, respectively, and measure the width dimensions of two positions of the back exhaust channel;

[0069] S5: The digital exhaust area measuring tool calculates the exhaust area value of the back side of the blade 400 to be measured through the length dimension of the back side exhaust channel and the width dimensions of two positions of the back side exhaust channel;

[0070] S6: Place the cross positioning surface of the digital exhaust area measuring tool positioning block on the top of the first basin side blade simulation block 330 and the second basin side blade simulation block 340, and contact them with the third exhaust edge simulation surface 332 and the reference surface 333 respectively; contact the fixed length measuring head with the large edge plate channel simulation surface 351 of the large edge plate simulation block 350, and contact the movable length measuring head with the small edge plate channel simulation surface 361 of the small edge plate simulation block 360, and measure the length dimension of the basin side exhaust channel; contact the two fixed width measuring heads with the back side simulation surfaces 331 of the first basin side blade simulation block 330 and the second basin side blade simulation block 340, and contact the two corresponding movable width measuring heads with the exhaust edge of the blade 400 to be measured, and measure the width dimensions of the basin side exhaust channel at two positions;

[0071] S7: The digital exhaust area measuring tool calculates the exhaust area value of the basin side of the blade 400 to be measured through the length dimension of the basin side exhaust channel and the width dimensions of the exhaust channel at two positions on the basin side;

[0072] S8: Add the exhaust area value of the back side of the blade 400 to be measured and the exhaust area value of the basin side of the blade 400 to be measured and divide the sum by 2. The obtained value is the exhaust area value of the single guide blade.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for measuring the exhaust area of ​​a single guide blade, It is characterized in that include: A base (10), and a fixing device and a simulation device both arranged on the base (10); The fixing device comprises a first positioning component (21) and a second positioning component (22) arranged at two ends of the base (10); The simulation device comprises a first back-side blade simulation block (310) and a second back-side blade simulation block (320) arranged on one side of the base (10), and a first basin-side blade simulation block (330), a second basin-side blade simulation block (340), a large edge plate simulation block (350) and a small edge plate simulation block (360) arranged on the other side of the base (10); the large edge plate simulation block (350) is close to the first positioning component (21), and the small edge plate simulation block (360) is close to the second positioning component (22); The first back blade simulation block (310) and the second back blade simulation block (320) are respectively provided with a first exhaust edge simulation surface (311) on one side facing the middle of the base (10); The first basin side blade simulation block (330) and the second basin side blade simulation block (340) both include a back side simulation surface (331), a third exhaust edge simulation surface (332) and a reference surface (333); the back side simulation surface (331) is formed on a side of the first basin side blade simulation block (330) or the second basin side blade simulation block (340) close to the middle of the base (10); the third exhaust edge simulation surface (332) is formed on a top surface of the first basin side blade simulation block (330) or the second basin side blade simulation block (340); the reference surface (333) is formed on a side of the first basin side blade simulation block (330) or the second basin side blade simulation block (340) away from the middle of the base (10), and the reference surface (333) is perpendicular to the third exhaust edge simulation surface (332); The large edge plate simulation block (350) is provided with a large edge plate channel simulation surface (351) on one side facing the middle of the base (10), and the small edge plate simulation block (360) is provided with a small edge plate channel simulation surface (361) on one side facing the middle of the base (10).

2. The device for measuring the exhaust area of ​​a single guide blade according to claim 1, It is characterized in that The first positioning assembly (21) comprises a first positioning seat (23), a first limiting seat (24) and a pressing seat (25); the first positioning seat (23) is provided with a first supporting surface (231) and an end limiting surface (232) which are perpendicular to each other; the first limiting seat (24) is provided with a large edge plate limiting surface (241); and the pressing seat (25) is provided with a top limiting surface (251).

3. The device for measuring the exhaust area of ​​a single guide vane according to claim 2, It is characterized in that The second positioning assembly (22) comprises a second positioning seat (26), a second limiting seat (27) and the pressing seat (25); the second positioning seat (26) is provided with a second supporting surface (261); the second limiting seat (27) is provided with a small edge plate limiting surface (271).

4. The device for measuring the exhaust area of ​​a single guide vane according to claim 3, It is characterized in that The clamping seat (25) comprises a guide rod (252) and a clamping block (253); one end of the guide rod (252) is connected to the base (10), the other end of the guide rod (252) passes through the clamping block (253) and is provided with a knurled nut (254); the guide rod (252) is sleeved with a spring (255) whose two ends are respectively in contact with the base (10) and the clamping block (253); the top limiting surface (251) is formed on the bottom wall of the clamping block (253).

5. The device for measuring the exhaust area of ​​a single guide vane according to any one of claims 1 to 4, It is characterized in that The base (10) is also provided with a ball stud (11).

6. A method for measuring the exhaust area of ​​a single guide blade based on the measuring device according to any one of claims 1 to 4, It is characterized in that The following steps are involved: S1: Fix the blade to be tested by a fixing device; S2: placing the cross positioning surface of the positioning block of the digital exhaust area measuring tool on the exhaust edge of the blade to be measured; fitting the fixed length measuring head to the back side large edge plate channel surface of the blade to be measured, and fitting the movable length measuring head to the back side small edge plate channel surface of the blade to be measured, to measure the length dimension of the back side exhaust channel; fitting two fixed width measuring heads to the back of the blade to be measured, and fitting two corresponding movable width measuring heads to the first back side blade simulation block (310) and the second back side blade simulation block (320), to measure the width dimensions of two positions of the back side exhaust channel; S3: The digital exhaust area measuring tool calculates the exhaust area value of the back side of the blade to be measured through the length dimension of the back exhaust channel and the width dimensions of two positions of the back exhaust channel; S4: placing the cross positioning surfaces of the positioning block of the digital exhaust area measuring tool on the top of the first basin side blade simulation block (330) and the second basin side blade simulation block (340) respectively; contacting the fixed length measuring head with the large edge plate simulation block (350), and contacting the movable length measuring head with the small edge plate simulation block (360), to measure the length dimension of the basin side exhaust passage; contacting the two fixed width measuring heads with the first basin side blade simulation block (330) and the second basin side blade simulation block (340), and contacting the two corresponding movable width measuring heads with the exhaust edges of the blades to be measured, to measure the width dimensions of the basin side exhaust passage at two positions; S5: The digital exhaust area measuring tool calculates the exhaust area value of the basin side of the blade to be measured through the length dimension of the basin side exhaust channel and the width dimensions of the two positions of the basin side exhaust channel; S6: Add the exhaust area value on the back side of the blade to be measured and the exhaust area value on the basin side of the blade to be measured and divide the sum by 2. The obtained value is the exhaust area value of the single guide blade.

7. The measuring method according to claim 6, It is characterized in that In step S1, the fixing method is as follows: the bottoms of both ends of the blade to be measured are respectively placed on the first support surface (231) and the second support surface (261), one end of the blade to be measured provided with a large edge plate contacts the end limit surface (232), the large edge plate and the small edge plate of the blade to be measured contact the large edge plate limit surface (241) and the small edge plate limit surface (271) respectively, the tops of both ends of the blade to be measured contact the top limit surfaces (251) of the two clamping seats (25), and the knurled nut (254) is screwed to fix the blade to be measured; In step S2, the contact mode of the two corresponding movable width measuring heads is as follows: the two corresponding movable width measuring heads are in contact with the first exhaust edge simulation surfaces (311) of the first back blade simulation block (310) and the second back blade simulation block (320), respectively; In step S4, the digital exhaust area measuring tool is installed in the following manner: the cross positioning surface of the positioning block of the digital exhaust area measuring tool contacts the third exhaust edge simulation surface (332) and the reference surface (333) on the first basin side blade simulation block (330) and the second basin side blade simulation block (340) respectively; the fixed length measuring head contacts the large edge plate channel simulation surface (351) of the large edge plate simulation block (350), and the movable length measuring head contacts the small edge plate channel simulation surface (361) of the small edge plate simulation block (360); and the two fixed width measuring heads contact the back side simulation surfaces (331) of the first basin side blade simulation block (330) and the second basin side blade simulation block (340) respectively.

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