Measuring platform suitable for water turbine blade

Abstract

The utility model relates to a measuring platform suitable for water turbine blades. The measuring platform comprises a plurality of platform assemblies which are built between flow passing surfaces of two adjacent water turbine blades. The platform assembly comprises a plate piece, a supporting piece and a magnetic attraction assembly. The plate piece is connected to the upper end of the supporting piece; the two ends of the supporting piece are connected with the magnetic attraction assemblies, and the magnetic attraction assemblies are used for being attracted to the flow passing faces so that the supporting piece can be connected between the flow passing faces of the two adjacent water turbine blades, and the scanning device has the advantage that the scanning integrity and precision are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement auxiliary devices, in particular to a measurement platform suitable for turbine blades. Background Art

[0002] As hydropower station turbine units operate longer, problems often arise, such as runner cavitation, blade cracks, and fixed guide vane cracks. To optimize the structure of turbine flow passage components, researchers typically rely on numerical simulations, performing CFD and finite element simulations on the three-dimensional solids of these components. This simulation typically requires runner blade data, but because runner blade data is core confidential data held by turbine manufacturers, it is often difficult for research institutions to obtain from the original manufacturer. Furthermore, for some long-running runners, the original data is no longer available, making the three-dimensional models required for simulation difficult to obtain.

[0003] Therefore, in order to solve the problem that it is difficult to obtain the three-dimensional model required for simulation calculation due to the difficulty in obtaining the runner blade data, reverse engineering technology is usually used for modeling in the existing technology, so that the turbine runner blades can be reverse processed and modeled through on-site scanning and mapping.

[0004] However, in actual engineering applications, due to the large size of the impeller, the flow channel between two adjacent blades is correspondingly large, which is not conducive to the staff's scanning and measurement of the impeller blades. It is further easy to cause incomplete scanning of the impeller blades, affecting the convergence or positioning accuracy of the scanning file, and further easily leading to scanning failure or low scanning accuracy.

[0005] Therefore, it is urgent for those skilled in the art to provide a measurement platform suitable for turbine blades to improve the integrity and accuracy of scanning. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the defects in the prior art, thereby providing a measurement platform suitable for turbine blades.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A measuring platform suitable for turbine blades includes several platform components built between the flow surfaces of two adjacent turbine blades; the platform components include a plate, a support member and a magnetic attraction component; the plate is connected to the upper end of the support member; the magnetic attraction component is connected to both ends of the support member, and the magnetic attraction component is used to be adsorbed on the flow surface so that the support member is connected between the flow surfaces of two adjacent turbine blades.

[0009] Preferably, the support member includes a plurality of telescopic support rods; the plurality of telescopic support rods are distributed in a linear array at the lower end of the plate, and both ends of each telescopic support rod are connected to the magnetic attraction assembly.

[0010] Preferably, it also includes a connecting component for connecting the support member and the magnetic component; the connecting component is connected to the magnetic component; the connecting component includes a pressure block symmetrically arranged about the support member, and the relatively arranged pressure blocks abut against both sides of the support member.

[0011] Preferably, the connecting assembly also includes a base and a threaded adjustment rod; the base is fixedly connected to the magnetic assembly and is slidingly connected to the pressure block; the threaded adjustment rod is threadedly connected to the base, and the threaded adjustment rod is also rotatably connected to the pressure block and axially limited, so as to drive the pressure block to move closer to or away from the telescopic support rod through rotation.

[0012] Preferably, the relatively arranged pressure blocks and the support member are enclosed to form a through groove; one end of each pressure block away from the support member protrudes from the magnetic attraction component to form a dislocation area; the connecting component also includes a winding locking member, and the winding path of the winding locking member passes through at least the through groove, the dislocation area and the upper end of the support member.

[0013] Preferably, the connecting assembly further comprises a wrap-around locking member, and the wrap-around locking member is arranged around the threaded adjustment rod at least once.

[0014] Preferably, a side of the pressing block close to the support member is provided with an abutting surface that abuts against a partial outer wall surface of the support member.

[0015] Preferably, the magnetic attraction assembly includes a switch adjustment magnet and a control button, and the control button is located on a side away from the support member.

[0016] Preferably, the end of the switch adjustment magnet away from the control button is provided with a limiting groove for accommodating the support member; the support member is configured as a telescopic steel rod, and / or the measuring platform further includes a winding locking member for connecting the switch adjustment magnet and the support member.

[0017] Preferably, it also includes a tailwater platform and a ladder; the tailwater platform is built on the water outlet side of two adjacent turbine blades; one end of the ladder is connected to the tailwater platform, and the other end is connected to the platform assembly.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The aforementioned technical solution provides a measurement platform suitable for turbine blades. By constructing several platform assemblies between the flow surfaces of two adjacent turbine blades, the platform increases the operator's standing area, thereby increasing the area the operator can scan on large turbine blades. Furthermore, the platform assemblies can be constructed according to scanning requirements, further enhancing the integrity and accuracy of the turbine blade scan. Furthermore, the platform assembly includes a plate, a support, and a magnetic assembly. The support supports the plate between the flow surfaces of the two turbine blades, facilitating the operator's standing position to scan the two flow surfaces. The magnetic assembly, on the one hand, ensures the stability of the support, facilitating the assembly and disassembly of the entire platform assembly. On the other hand, it prevents damage to the flow surfaces of the turbine blades caused by the platform assembly, such as damage to welded joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of an example of the measurement platform of the present invention.

[0022] Figure 2 for Figure 1 A diagram showing an example of one of the platform components.

[0023] Figure 3 for Figure 1 Exploded diagram of the magnetic component and connection component.

[0024] Figure 4 for Figure 1 A diagram showing another example of platform components.

[0025] Description of reference numerals:

[0026] 100, flow surface; 200, water outlet; 1, plate; 2, support member; 21, telescopic support rod; 3, magnetic assembly; 31, switch adjustment magnet; 311, limit slot; 32, control button; 4, connecting assembly; 41, pressure block; 410, through hole; 411, abutment surface; 42, base; 43, threaded adjustment rod; 44, limit member; 5, through slot; 6, offset area; 7, tailwater platform; 8, ladder. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] See also Figures 1 to 3 In this embodiment, the embodiment of the utility model provides a measurement platform suitable for turbine blades, including several platform components built between the flow surfaces 100 of two adjacent turbine blades. The several platform components can be arranged in several layers from top to bottom in the gravity direction, and can be specifically built according to actual measurement needs. The construction of the platform components can increase the standing area of ​​the operator, thereby enabling the operator to increase the area that can be scanned for large-volume turbine blades, and the several platform components can be built according to the scanning requirements, which can further increase the integrity of the scanning of the turbine blades and, at the same time, increase the scanning accuracy of the turbine blades.

[0031] Specifically, in this embodiment, the platform assembly includes a plate 1, a support 2, and a magnetic assembly 3; the plate 1 is connected to the upper end of the support 2, and the specific connection method can be connected by fasteners such as screws or bolts, setting holes in the plate 1, and using metal wire or straps to wrap the plate 1 and support 2, direct welding, snap connection, interference fit, etc. Magnetic assemblies 3 are provided at both ends of the support 2. The magnetic assemblies 3 are used to be adsorbed on the flow surface 100 so that the support 2 is connected between the flow surfaces 100 of two adjacent turbine blades. On the one hand, the provision of the magnetic assembly 3 can ensure the stability of the support of the support 2 and facilitate the construction and disassembly of the entire platform assembly; on the other hand, it can prevent the construction of the platform assembly from causing damage to the flow surface 100 of the turbine blade, such as damage to the welding welds.

[0032] Specifically, the panel 1 can be set as a wooden board, an injection-molded board, etc. It can be known that as long as the panel 1 can meet the designed weighing force, a lightweight material can be selected to make it to reduce the load-bearing capacity of the support 2.

[0033] Furthermore, the support member 2 can be made of steel so that it has sufficient deformation resistance and can stably support the plate 1.

[0034] It can be known that, in order to facilitate the operator to stand, the plate 1 needs to be placed horizontally, and along the direction of gravity (which is also the radial direction of the turbine blades), there is a difference in the distance between the flow surfaces 100 of two adjacent turbine blades (that is, the width of the flow channel formed is different). Therefore, in order to facilitate the construction of the entire measuring platform, in this embodiment, the support member 2 includes a plurality of telescopic support rods 21, and then during the construction process, the telescopic length of the telescopic support rods 21 can be adjusted according to the actual installation position and situation to facilitate installation.

[0035] Furthermore, a plurality of telescopic support rods 21 are distributed in a linear array at the lower end of the panel 1, and both ends of each telescopic support rod 21 are connected to a magnetic component 3; this is beneficial to increase the supporting position of the support member 2 on the panel 1, increase the supporting effect on the panel 1, and can avoid the hidden dangers of deformation or even collapse of the panel 1 to a certain extent, thereby increasing safety.

[0036] In order to facilitate the construction and disassembly of the entire measurement platform, in this embodiment, a connecting component 4 is further included for connecting the support member 2 and the magnetic attraction component 3.

[0037] Specifically, in this embodiment, the connecting component 4 is connected to the magnetic attraction component 3 ; the connecting component 4 includes pressing blocks 41 symmetrically arranged with respect to the support member 2 , and the pressing blocks 41 oppositely arranged press against both sides of the support member 2 .

[0038] Furthermore, the connecting assembly 4 also includes a base 42 and a threaded adjustment rod 43; the base 42 is fixedly connected to the magnetic assembly 3 and is slidingly connected to the pressure block 41; the threaded adjustment rod 43 is threadedly connected to the base 42, and the threaded adjustment rod 43 is also rotatably connected to the pressure block 41 and axially limited, so as to drive the pressure block 41 to move closer to or away from the telescopic support rod 21 through rotation.

[0039] It can be seen that the pressure block 41 will not be separated from the base 42, and the "rotational connection and axially limited connection" means that one end of the threaded adjustment rod 43 is rotationally connected to the pressure block 41, and at the same time, it will not slip along the axial direction of the threaded adjustment rod 43 with the pressure block 41. In this embodiment, a through hole 410 can be provided on the pressure block 41, and the diameter of the through hole 410 is smaller than the maximum diameter of the thread on the threaded adjustment rod 43. During installation, one end of the threaded adjustment rod 43 passes through the through hole 410 and is connected to the limiter 44 having a diameter larger than the through hole 410. Of course, in other embodiments, a stepped groove with an opening can be provided on the pressure block 41, and a limit block can be provided on the threaded adjustment rod 43, so that the pressure block 41 does not affect the rotation of the threaded adjustment rod 43, and can move under the drive of the threaded adjustment rod 43.

[0040] In order to further increase the stability of the connection between the support member 2 and the connecting component 4, in this embodiment, the pressure blocks 41 are arranged to enclose the support member 2 to form a through groove 5; each pressure block 41 protrudes from the magnetic attraction component 3 at one end away from the support member 2 to form a dislocation area 6; the connecting component 4 also includes a winding locking member, and the winding path of the winding locking member passes through at least the through groove 5, the dislocation area 6 and the upper end of the support member 2, which is not shown in the figure.

[0041] Furthermore, the winding locking member may be arranged at least once around the threaded adjustment rod 43 to limit the threaded adjustment rod 43 from rotating under the action of external force, thereby preventing the threaded adjustment rod 43 from rotating and causing the pressing block 41 to loosen.

[0042] To further enhance the stability of the connection between the support member 2 and the connecting assembly 4, in this embodiment, abutting surface 411 is provided on the side of the pressure block 41 proximal to the support member 2, which abuts against a portion of the outer wall of the support member 2, thereby increasing the contact area between the two. Specifically, the abutting surface 411 can be configured based on the structure of the support member 2. When the support member 2 is a cylindrical steel tube, the abutting surface 411 can be configured as a circular arc surface. When the support member 2 is configured as a rectangular steel tube, the abutting surface 411 can be configured as two mutually perpendicular planes.

[0043] Furthermore, the magnetic component 3 includes a switch adjustment magnet 31 and a control button 32. The control button 32 is located on the side away from the support member 2 to avoid interference between the control button 32 and the support member 2. The setting of the control button 32 can control the demagnetization of the switch adjustment magnet 31, thereby facilitating the removal of the magnetic component 3 from the blade. The magnetic component 3 as a whole can adopt existing purchased parts, such as neodymium iron boron magnets and dual-speed switch magnets made of A3 steel. The specific demagnetization method is not an improvement point of this application, so it will not be described in detail.

[0044] In this embodiment, a tailwater platform 7 is further included. The tailwater platform 7 is built on one side of the water outlet edge 200 of two adjacent turbine blades to facilitate scanning the position of the water outlet edge 200 of the blades.

[0045] Furthermore, it also includes a ladder 8, one end of the ladder 8 is connected to the tailwater platform 7, and the other end is connected to the platform assembly, so as to facilitate the operator to perform measurements.

[0046] See also Figure 4 In another embodiment, the switch adjustment magnet 31 and the winding locking member can also be directly used to connect the support member 2 and the magnetic attraction assembly 3. Specifically, the end of the switch adjustment magnet 31 away from the control button 32 is provided with a limiting groove 311 for accommodating the support member 2. The limiting groove 311 supports and limits the support member 2 at multiple angles. When the outer wall surface of the support member 2 is a circular arc surface, the limiting groove 311 is an arc shape; when the outer wall surface of the support member 2 is set as a rectangular plane, the abutment surface 411 can be set as two mutually perpendicular planes. At the same time, the support member 2 is set as a telescopic steel rod, and the switch adjustment magnet 31 can be used to magnetically fix the support member 2.

[0047] Furthermore, the measuring platform further includes a winding locking member for connecting the switch adjustment magnet 31 and the support member 2, which is not shown in the figure.

[0048] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A measuring platform suitable for turbine blades, characterized in that: It comprises a plurality of platform components built between the flow surfaces (100) of two adjacent turbine blades; The platform component comprises a plate component (1), a support component (2) and a magnetic attraction component (3); The plate member (1) is connected to the upper end of the support member (2); Both ends of the support member (2) are connected to the magnetic attraction components (3), and the magnetic attraction components (3) are used to be adsorbed on the flow surface (100) so that the support member (2) is connected between the flow surfaces (100) of two adjacent turbine blades.

2. A measuring platform suitable for turbine blades according to claim 1, characterized in that: The support member (2) comprises a plurality of telescopic support rods (21); A plurality of telescopic support rods (21) are distributed in a linear array at the lower end of the plate (1), and both ends of each telescopic support rod (21) are connected to the magnetic attraction assembly (3).

3. A measuring platform suitable for turbine blades according to claim 2, characterized in that: It also includes a connecting component (4) for connecting the supporting member (2) and the magnetic attraction component (3); The connecting component (4) is connected to the magnetic attraction component (3); The connecting assembly (4) comprises pressing blocks (41) symmetrically arranged with respect to the supporting member (2), and the pressing blocks (41) arranged opposite to each other press against two sides of the supporting member (2).

4. A measuring platform suitable for turbine blades according to claim 3, characterized in that: The connecting assembly (4) further comprises a base (42) and a threaded adjustment rod (43); The base (42) is fixedly connected to the magnetic attraction component (3) and is slidably connected to the pressing block (41); The threaded adjustment rod (43) is threadedly connected to the base (42), and the threaded adjustment rod (43) is also rotationally connected and axially limitedly connected to the pressing block (41), so as to drive the pressing block (41) to approach or move away from the telescopic support rod (21) through rotation.

5. A measuring platform suitable for turbine blades according to claim 3, characterized in that: The pressing block (41) and the supporting member (2) arranged opposite to each other enclose a through groove (5); One end of each of the pressing blocks (41) away from the support member (2) protrudes from the magnetic attraction component (3) to form a misalignment zone (6); The connection assembly (4) further comprises a winding locking member, the winding path of which passes through at least the through slot (5), the dislocation zone (6) and the upper end of the support member (2).

6. A measuring platform suitable for turbine blades according to claim 4 or 5, characterized in that: The connection assembly (4) further comprises a wrap-around locking member, wherein the wrap-around locking member is arranged around the threaded adjustment rod (43) at least once.

7. A measuring platform suitable for turbine blades according to claim 3, characterized in that: A side of the pressing block (41) close to the support member (2) is provided with an abutment surface (411) abutting against a partial outer wall surface of the support member (2).

8. The measuring platform for turbine blades according to claim 1, characterized in that: The magnetic attraction component (3) comprises a switch adjustment magnet (31) and a control button (32). The control button (32) is located on a side away from the support member (2).

9. A measuring platform suitable for turbine blades according to claim 8, characterized in that: An end of the switch adjustment magnet (31) away from the control button (32) is provided with a limiting groove (311) for accommodating the support member (2); The support member (2) is configured as a telescopic steel rod, and / or the measuring platform further comprises a winding locking member for connecting the switch adjustment magnet (31) and the support member (2).

10. A measuring platform suitable for turbine blades according to claim 1, characterized in that: It also includes a tailwater platform (7) and a ladder (8); The tailwater platform (7) is built on one side of the water outlet edge (200) of two adjacent turbine blades; One end of the ladder (8) is connected to the tailwater platform (7), and the other end is connected to the platform assembly.

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