Turbine blade mass moment measuring device

Abstract

The utility model relates to the technical field of measuring equipment, and discloses a turbine blade mass moment measuring device which comprises an electronic scale and a supporting plate, one end of the supporting plate is arranged on the electronic scale through a supporting leg, the other end of the supporting plate is provided with a supporting device, the top of the supporting device is provided with a mounting table, and the top of the mounting table is provided with a clamping device. According to the utility model, the operation is convenient, the sequence of the mass moment of each turbine blade can be rapidly obtained, and the mass moment measurement efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring equipment, in particular to a turbine blade mass moment measuring device. Background Art

[0002] For high-speed rotating turbine rotors, the balance of rotor components is the most important factor affecting their service life. The determining factor of the balance is the centrifugal force F when the rotor blades rotate. Its magnitude can be expressed by the formula F = mω 2 r represents, where F is the centrifugal force, m is the mass of the blade, r is the distance from the center of gravity of the blade to the center of rotation, and ω is the angular velocity of the rotor.

[0003] Because the angular velocity of the rotor components is consistent during operation, the only factor affecting the centrifugal force on the blades is the moment mr, also known as the mass moment or weight moment. This mass moment is typically calculated by multiplying the blade's mass m by the distance from its center of gravity to the center of rotation. In actual measurement, this distance is divided into the distance from the blade's center of gravity to the installation position (operating position), L1, and the distance from the installation position (operating position) to the center of rotation, L2. The latter distance, L2, can be directly measured, while the distance from the center of gravity to the installation position, L1, is difficult to accurately measure because the blade's center of gravity changes with its size and weight, making it difficult to directly measure.

[0004] In order to ensure the service life of the blades of the rotor components, it is necessary to ensure the balance effect of the engine rotor during assembly. It is necessary to know the mass moment of each blade during assembly and adjust the circumferential installation order of the blades according to the mass moment value to obtain the ideal circumferential arrangement order. Therefore, a turbine blade mass moment measurement device is needed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model develops a turbine blade mass moment measuring device, which is easy to operate and can quickly obtain the ranking of the mass moments of each turbine blade, thereby effectively improving the efficiency of mass moment measurement.

[0006] The technical solution of the utility model to solve the technical problem is: a turbine blade mass moment measuring device, including an electronic scale and a main board, one end of the main board is set on the electronic scale through a support leg, the other end of the main board is provided with a supporting device, the top of the supporting device is provided with a mounting platform, and the top of the mounting platform is provided with a clamping device.

[0007] As an optimization, the support device includes a slide rail and a support plate. One end of the slide rail is detachably connected to the other end of the mainboard, and the other end of the slide rail is detachably connected to the support plate via an adjustment bolt. The slide rail can extend the length of the mainboard and improve measurement accuracy. The support plate can cooperate with the support legs to support the mainboard and slide rail, and can also facilitate leveling of the mainboard and slide rail.

[0008] As an optimization, the main board is a T-shaped plate, consisting of a longitudinal plate and a transverse plate. Legs are installed at each end of the longitudinal plate. The middle of the longitudinal plate is vertically connected to one end of the transverse plate, and the other end of the transverse plate is detachably connected to one end of the slide rail via mounting bolts. The longitudinal plate allows for the installation of two sets of legs, improving stability; the transverse plate provides a stable connection to the slide rail.

[0009] As an optimization, the cross plate is evenly spaced with several sets of threaded holes, and the rails are evenly spaced with several sets of countersunk holes. The heads of the mounting bolts are positioned within the countersunk holes, while the shanks of the mounting bolts are positioned within the threaded holes. The threaded and countersunk holes ensure a stable connection between the cross plate and rails via the mounting bolts, and the rail extension can be adjusted according to the length of the turbine blades.

[0010] As an optimization, a slider is installed at the bottom of the mounting platform, which slides on the slide rail. A positioning bolt is installed at the top of the mounting platform, and the bottom of the positioning bolt passes through the mounting platform and abuts the slide rail. By installing the slider and the slide rail, the position of the mounting platform can be fine-tuned, making it easier to find the optimal measurement position. The positioning bolt can also lock the position of the mounting platform, controlling the variables and preventing the mounting platform from shifting when replacing turbine blades. This ensures that the vertical display of the electronic scale accurately reflects the mass moment characteristics of each turbine blade.

[0011] As an optimization, the clamping device includes vertical plates, fixed pins, and movable pins. Two sets of vertical plates are respectively set on either side of the mounting platform. The fixed pin and movable pin are staggered between the two sets of vertical plates. The fixed pin is set above the movable pin. The two ends of the fixed pin are fixedly connected to the two sets of vertical plates, and the two ends of the movable pin are slidably connected to the two sets of vertical plates. The vertical plates can support the turbine blades and make them suspended in the air; the staggered fixed pins and movable pins can clamp the installation position of the turbine blades; and the movable pins can facilitate the removal and installation of the turbine blades.

[0012] As an optimization, a waist-shaped hole is horizontally provided on the vertical plate, and the end of the movable pin is slidably set in the waist-shaped hole. The fixed pin is set at the end of the vertical plate away from the main plate, and the movable pin is set at the end of the vertical plate close to the main plate. This allows the fixed pin to press down the installation position of the turbine blade, and the movable pin to support the installation position of the turbine blade upward, thereby stably clamping the installation position of the turbine blade. The waist-shaped hole can facilitate the sliding of the movable pin.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] By setting up an electronic scale, the numerical value can be accurately displayed. The numerical value can be regarded as the conversion value of the mass moment, thereby reflecting the mass moment characteristics of each turbine blade. The circumferential installation order of the turbine blades can be adjusted according to the numerical results to obtain the ideal circumferential arrangement order; by setting up a main board, it can carry the mounting table, clamping device and turbine blades; by setting up legs and support devices, the main board can be supported to facilitate electronic scale weighing; by setting up a mounting table, it is convenient to install the clamping device; by setting up the clamping device, the installation position of the turbine blade can be stably clamped so that the turbine blade is suspended in the air. Since the center of gravity of each turbine blade is different, the displayed values ​​of the electronic scale are different. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of an embodiment of the present utility model.

[0016] Figure 2 This is a front view of an embodiment of the utility model.

[0017] Figure 3 for Figure 1 A partial enlarged schematic diagram of area A in the middle.

[0018] Figure: 1, electronic scale; 2, mainboard; 3, support legs; 4, support device; 5, mounting platform; 6, clamping device; 7, threaded hole; 8, countersunk hole; 9, slider; 10, positioning bolt; 11, turbine blade;

[0019] 41. Slide rail; 42. Support plate;

[0020] 61. Vertical plate; 62. Fixed pin; 63. Movable pin; 64. Waist-shaped hole. DETAILED DESCRIPTION

[0021] In order to clearly illustrate the technical features of this solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0022] Example 1

[0023] Figures 1 to 3 An embodiment of the present invention is as follows: Figures 1 to 3 As shown, a turbine blade mass moment measuring device includes an electronic scale 1 and a main board 2. One end of the main board 2 is set on the electronic scale 1 through a support leg 3. The other end of the main board 2 is provided with a supporting device 4. The top of the supporting device 4 is provided with a mounting platform 5. The top of the mounting platform 5 is provided with a clamping device 6. The clamping device 6 is provided with a turbine blade 11.

[0024] By setting up the electronic scale 1, the numerical value can be accurately displayed. The numerical value can be regarded as the conversion value of the mass moment, thereby reflecting the mass moment characteristics of each turbine blade 11. The circumferential installation order of the turbine blades 11 can be adjusted according to the numerical results, so as to obtain an ideal circumferential arrangement order; by setting up the main board 2, the mounting platform 5, the clamping device 6 and the turbine blades 11 can be carried; by setting up the support legs 3 and the support device 4, the main board 2 can be supported, which is convenient for weighing the electronic scale 1; by setting up the mounting platform 5, the installation of the clamping device 6 is convenient; by setting up the clamping device 6, the installation position of the turbine blade 11 can be stably clamped, so that the turbine blade 11 is suspended in the air. Since the center of gravity of each turbine blade 11 is different, the displayed numerical values ​​of the electronic scale 1 are different.

[0025] like Figure 1 and Figure 2 As shown, the support device 4 includes a slide rail 41 and a support plate 42. One end of the slide rail 41 is detachably connected to the other end of the main board 2, and the other end of the slide rail 41 is detachably connected to the support plate 42 via an adjustment screw. The provision of the slide rail 41 can extend the length of the main board 2, improving the accuracy of measurement; the provision of the support plate 42 can cooperate with the support legs 3 to support the main board 2 and the slide rail 41, and the adjustment screw can be used to easily level the main board 2 and the slide rail 41.

[0026] like Figure 1 and Figure 2 As shown, the main plate 2 is a T-shaped plate, including a longitudinal plate and a transverse plate. Both ends of the longitudinal plate are detachably provided with support legs 3. The upper half of the support legs 3 is a screw, which allows for easy adjustment of the support legs 3. The middle of the longitudinal plate is vertically connected to one end of the transverse plate, and the other end of the transverse plate is detachably connected to one end of the slide rail 41 via two sets of mounting bolts. The longitudinal plate allows for the installation of two sets of support legs 3, improving stability; the transverse plate provides a stable connection with the slide rail 41.

[0027] like Figure 1 As shown, the cross plate is evenly provided with a plurality of groups of threaded holes 7, and the slide rail 41 is evenly provided with a plurality of groups of countersunk holes 8. The heads of the mounting bolts are disposed in the countersunk holes 8, and the shanks of the mounting bolts are disposed in the threaded holes 7. The provision of the threaded holes 7 and countersunk holes 8 allows for a stable connection between the cross plate and the slide rail 41 via the mounting bolts, and the extension of the slide rail 41 can be adjusted according to the length of the turbine blades 11.

[0028] like Figures 1 to 3As shown, a slider 9 is provided at the bottom of the mounting platform 5, which is slidably mounted on a slide rail 41. A positioning bolt 10 is provided at the top of the mounting platform 5. The bottom of the positioning bolt 10 passes through the mounting platform 5 and abuts against the slide rail 41. Removable limit posts are provided at the tops of both ends of the slide rail 41 to prevent the slider 9 from falling out. By providing the slider 9 and the slide rail 41, the position of the mounting platform 5 can be fine-tuned, making it easier to find the optimal measurement position; by providing the positioning bolt 10, the position of the mounting platform 5 can be locked, controlling the variables, and preventing the mounting platform 5 from shifting when replacing the turbine blades 11. This allows the vertical display of the electronic scale 1 to accurately reflect the mass moment characteristics of each turbine blade 11.

[0029] like Figures 1 to 3 As shown, the clamping device 6 includes a vertical plate 61, a fixed pin 62, and a movable pin 63. Two sets of vertical plates 61 are respectively arranged on both sides of the mounting platform 5. The fixed pin 62 and the movable pin 63 are staggered and arranged between the two sets of vertical plates 61. The fixed pin 62 is arranged above the movable pin 63. The two ends of the fixed pin 62 are respectively fixedly connected to the two sets of vertical plates 61, and the two ends of the movable pin 63 are respectively slidably connected to the two sets of vertical plates 61. By providing the vertical plates 61, the turbine blade 11 can be supported and suspended in the air; by staggering the fixed pin 62 and the movable pin 63, the installation position of the turbine blade 11 can be clamped. The upper and lower sides of the installation position of the turbine blade 11 are respectively provided with an upper groove and a lower groove, which can be adapted to the fixed pin 62 and the movable pin 63; by providing the movable pin 63, the turbine blade 11 can be easily disassembled and assembled, and the installation position of the turbine blade 11 of different sizes can be adapted.

[0030] like Figures 1 to 3 As shown, a waist-shaped hole 64 is horizontally provided on the vertical plate 61, and the end of the movable pin 63 is slidably disposed in the waist-shaped hole 64. The fixed pin 62 is disposed on the end of the vertical plate 61 away from the main plate 2, and the movable pin 63 is disposed on the end of the vertical plate 61 close to the main plate 2. This allows the fixed pin 62 to press down on the installation position of the turbine blade 11, and the movable pin 63 to support the installation position of the turbine blade 11 upward, thereby stably clamping the installation position of the turbine blade 11. The waist-shaped hole 64 facilitates the sliding of the movable pin 63.

[0031] During use, the measurement personnel can determine the extension length of the slide rail 41 according to the length of the turbine blade 11, and then connect the horizontal plate of the main board 2 and the slide rail 41 through two sets of mounting bolts; the measurement personnel install the two sets of legs 3 to the longitudinal plate of the main board 2 through threads, and to prevent the legs 3 from loosening, nuts can also be installed on the legs 3 for tightening; before the specific measurement, the staff puts the legs 3 on the electronic scale 1, and adjusts the main board 2 and the slide rail 41 by adjusting the adjusting screw on the support plate 42; then the position of the mounting platform 5 can be further adjusted, and the mounting platform 5 can be fixed by tightening the positioning bolts 10 to complete the preparation work; during the specific measurement, the staff inserts the installation position of the turbine blade 11 between the fixed pin 62 and the movable pin 63 Then, the turbine blade 11 is laid flat, and the fixed pin 62 is first inserted into the upper groove of the installation position of the turbine blade 11. Then, the movable pin 63 is adjusted so that the movable pin 63 is inserted into the lower groove of the installation position of the turbine blade 11. At this time, the center of gravity of the turbine blade 11 is located between the electronic scale 1 and the mounting platform 5. The fixed pin 62 can press down the installation position of the turbine blade 11, and the movable pin 63 can support the installation position of the turbine blade 11 upward, thereby stably clamping the installation position of the turbine blade 11. The staff records the reading of the electronic scale 1 at this time, and replaces other turbine blades 11 for measurement in turn. Finally, the circumferential installation order of the turbine blades 11 is adjusted according to the numerical results measured by the electronic scale 1 to obtain the ideal circumferential arrangement order. The utility model is not only convenient to operate, but also can quickly obtain the ranking of the mass moments of each turbine blade 11, effectively improving the efficiency of mass moment measurement.

[0032] The descriptions of the orientation or relative position relationship of the structure in the present invention, such as the orientation or relative position relationship indicated by "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., are based on the orientation or position relationship shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

Claims

1. A turbine blade mass moment measuring device, comprising an electronic scale (1) and a mainboard (2), characterized in that: One end of the mainboard (2) is arranged on the electronic scale (1) through a supporting leg (3); the other end of the mainboard (2) is provided with a supporting device (4); a mounting platform (5) is provided on the top of the supporting device (4); and a clamping device (6) is provided on the top of the mounting platform (5).

2. The turbine blade mass moment measurement device according to claim 1, characterized in that: The supporting device (4) comprises a slide rail (41) and a support plate (42), one end of the slide rail (41) is detachably connected to the other end of the main plate (2), and the other end of the slide rail (41) is detachably connected to the support plate (42) via an adjusting bolt.

3. The turbine blade mass moment measurement device according to claim 2, characterized in that: The main board (2) is a T-shaped board including a longitudinal board and a transverse board. Both ends of the longitudinal board are provided with supporting legs (3). The middle of the longitudinal board is vertically connected to one end of the transverse board. The other end of the transverse board is detachably connected to one end of the slide rail (41) via mounting bolts.

4. The turbine blade mass moment measurement device according to claim 3, characterized in that: The transverse plate is evenly provided with a plurality of threaded holes (7), the slide rail (41) is evenly provided with a plurality of countersunk holes (8), the heads of the mounting bolts are arranged in the countersunk holes (8), and the rods of the mounting bolts are arranged in the threaded holes (7).

5. The turbine blade mass moment measuring device according to claim 4, characterized in that: A slider (9) is provided at the bottom of the mounting platform (5), and the slider (9) is slidably arranged on the slide rail (41). A positioning bolt (10) is provided at the top of the mounting platform (5), and the bottom of the positioning bolt (10) passes through the mounting platform (5) and abuts against the slide rail (41).

6. The turbine blade mass moment measuring device according to any one of claims 1 to 5, characterized in that: The clamping device (6) comprises a vertical plate (61), a fixed pin (62) and a movable pin (63). The two groups of vertical plates (61) are respectively arranged on both sides of the mounting platform (5). The fixed pin (62) and the movable pin (63) are staggered and arranged between the two groups of vertical plates (61). The fixed pin (62) is arranged above the movable pin (63). The two ends of the fixed pin (62) are respectively fixedly connected to the two groups of vertical plates (61). The two ends of the movable pin (63) are respectively slidably connected to the two groups of vertical plates (61).

7. The turbine blade mass moment measurement device according to claim 6, characterized in that: A waist-shaped hole (64) is horizontally provided on the vertical plate (61), and the end of the movable pin (63) is slidably arranged in the waist-shaped hole (64). The fixed pin (62) is arranged on the end of the vertical plate (61) away from the main plate (2), and the movable pin (63) is arranged on the end of the vertical plate (61) close to the main plate (2).

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