A turbine blade suspension device

Abstract

This invention provides a turbine blade suspension device, comprising an axial fixing mechanism that allows for relative fixation to the blade body, and a radial fixing mechanism that allows for relative fixation to a support device. It also includes a connecting mechanism for selectively connecting the axial fixing mechanism and the radial fixing mechanism together. In this manner, the force exerted by the blade body on the axial fixing mechanism is transmitted to the radial fixing mechanism via the connecting mechanism, and then further transmitted along the radial fixing mechanism to the support device. This allows the support device to be relatively fixed to the blade body, thereby enabling the support device to support the blade body. This prevents the blade body from swaying.

Description

Technical Field

[0001] This utility model relates to the field of turbine blade fixing technology, and in particular to a turbine blade suspension device. Background Technology

[0002] like Figure 1 As shown, during the inspection and maintenance of the water turbine, it is generally necessary to separate the water turbine blades 10 from the water turbine support (not shown in the figure) so that the staff can inspect and maintain the water turbine blades 10, the water turbine support and other auxiliary parts separately.

[0003] However, due to the significant weight of the turbine blades 10, performing inspection and maintenance work after moving them to a horizontal plane would result in a large workload and high labor intensity. Therefore, in existing technology, the turbine blades 10 are typically hoisted using hoisting equipment (not shown in the figure) to secure them. Then, the turbine blades 10 are separated from the turbine body.

[0004] Although this method can fix the turbine blades 10, the turbine blades 10 and the hoisting equipment are flexibly connected. Therefore, when the turbine blades 10 are subjected to force, they will shake, which may cause the turbine blades 10 to collide with the turbine body and thus damage the turbine. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a turbine blade suspension device. To achieve the above objectives, this utility model adopts the following technical solution:

[0006] A turbine blade suspension device is disclosed. The turbine blade includes a blade body and a mounting hole disposed on the blade body and extending axially for accommodating the device.

[0007] The device includes an axial fixing mechanism that is selectively inserted into a mounting hole and allows for relative fixation to the blade body, and a radial fixing mechanism that is selectively inserted into a support device and allows for relative fixation to the support device.

[0008] It also includes a connecting mechanism for selectively connecting the axial fixing mechanism and the radial fixing mechanism together, so that the force exerted by the blade body on the axial fixing mechanism is transmitted to the support device after passing through the connecting mechanism and the radial fixing mechanism, thereby enabling the support device to support the blade body.

[0009] Furthermore, the axial fixing mechanism includes a fixing rod passing through the mounting hole, and a receiving part that is fixedly mounted on the fixing rod and allows the blade body to be received.

[0010] Furthermore, a first external thread is provided on the fixing rod along its axial direction, such that the first external thread is located in the mounting hole. The receiving part includes a locking member that engages with the external thread, and a buffer member that is disposed on the locking member in the axial direction and allows it to abut against the blade body.

[0011] Furthermore, the buffer is made of any material that allows for elastic deformation, and its axial upward curvature is comparable to that of the blade body, so that the buffer can fit snugly against the blade body.

[0012] Furthermore, the connecting mechanism includes a first connecting plate arranged horizontally to accommodate an axial fixing mechanism and allowing it to be fixed relative to the axial fixing mechanism, and a second connecting plate disposed on the first connecting plate and extending upward to accommodate a radial fixing mechanism and allowing it to be fixed relative to the radial fixing mechanism.

[0013] Furthermore, a first connecting hole is provided on the first connecting plate, the first connecting hole being configured to accommodate a fixing rod, and a second external thread is also provided on the fixing rod, such that the second external thread is located in the first connecting hole and extends upward. The axial fixing mechanism also includes a fastener that allows the second external thread to engage with each other, so that the fixing rod can be relatively fixed on the first connecting plate.

[0014] Furthermore, a second connecting hole is provided on the second connecting plate, and the radial fixing mechanism is selectively inserted into the second connecting hole and is allowed to be fixed relative to the supporting device so that the connecting mechanism is relatively fixed on the supporting device.

[0015] Furthermore, the support device includes a radially inwardly extending threaded hole, and the radial fixing mechanism includes a threaded fastener passing through a second connecting hole, the threaded fastener being configured to allow mating with the threaded hole.

[0016] Furthermore, the support device also includes a blind hole located radially outside the threaded hole, and the radial fixing mechanism also includes a sleeve selectively disposed in the blind hole and cooperating with the blind hole, the sleeve being configured to allow for the reception of threaded fasteners and to fit together with the threaded fasteners.

[0017] Furthermore, the radial fixing mechanism is provided in two parts and is distributed symmetrically on both sides of the axial fixing mechanism in a manner that allows the connecting mechanism to be fixed in a balanced way.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This invention includes an axial fixing mechanism for fixing the turbine blade, a radial fixing mechanism for fixing the support device, and a connecting mechanism for fixing the axial and radial fixing mechanisms together. In this way, the force exerted by the blade body on the axial fixing mechanism is transmitted to the radial fixing mechanism via the connecting mechanism, and then further transmitted to the support device along the radial fixing mechanism. This allows the support device to be fixed to the blade body, thus supporting the blade body and preventing blade swaying. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a schematic diagram of the overall structure of a water turbine blade in the prior art;

[0022] Figure 2 This is a schematic diagram of the overall structure of the supporting equipment in the prior art;

[0023] Figure 3 This is a schematic diagram of the overall structure of the turbine blade suspension device according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the overall structure of the connecting mechanism in an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the overall structure of the axial fixing mechanism according to an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the overall structure of the radial fixing mechanism in an embodiment of this utility model.

[0027] In the above figures: turbine blade 10, blade body 101, mounting hole 102, support device 20, screw hole 201, blind hole 202, turbine blade suspension device 100, axial fixing mechanism 1, fixing rod 11, receiving part 12, locking part 121, buffer part 122, fastener 13, radial fixing mechanism 2, threaded fastener 21, rotating part 211, sleeve 22, connecting mechanism 3, first connecting plate 31, first connecting hole 311, second connecting plate 32, second connecting hole 321, first reinforcing plate 33, second reinforcing plate 34. Detailed Implementation

[0028] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0029] To better understand the purpose, structure, and function of this utility model, the following detailed description of a turbine blade suspension device is provided in conjunction with the accompanying drawings.

[0030] like Figure 1 As shown, the turbine blade 10 includes a blade body 101 and a mounting hole 102 disposed on the blade body 101. In this embodiment, the mounting hole 102 extends axially to form a space for accommodating the turbine blade suspension device 100. It should be noted that the structure of the turbine blade 10 is well known to those skilled in the art.

[0031] In this embodiment, as Figure 2 , 3 As shown, the device 100 includes an axial fixing mechanism 1, which is selectively inserted into the mounting hole 102 and allows it to be fixed relative to the blade body 101. The device 100 also includes a radial fixing mechanism 2, which is selectively inserted into the support device 20 (rotor chamber or similar) and allows it to be fixed relative to the support device 20.

[0032] In addition, such as Figure 3 As shown, the device 100 also includes a connecting mechanism 3, which is used to selectively connect the axial fixing mechanism 1 and the radial fixing mechanism 2 together. In this way, the force exerted by the blade body 101 on the axial fixing mechanism 1 can be transmitted to the radial fixing mechanism 2 via the connecting mechanism 3, and then transmitted along the radial fixing mechanism 2 to the support device 20. This allows the support device 20 to be relatively fixed to the blade body 101, thereby enabling the support device 20 to support the blade body 101.

[0033] In this configuration, when the device 100 is needed to support the blade body 101 for maintenance, the connecting mechanism 3 is first installed on the blade body 101. Simultaneously, the axial fixing mechanism 1 located on the connecting mechanism 3 is inserted into the mounting hole 102, and the axial fixing mechanism 1 is fixed relative to the blade body 101.

[0034] Furthermore, a radial fixing mechanism 2 located on the connecting mechanism 3 is mounted on the support device 20 (rotor chamber and the like), and the radial fixing mechanism 2 is fixed relative to the support device 20. Thus, the arrangement of the device 100 is completed.

[0035] During this process, the force (such as gravity) acting on the blade body 101 is transmitted along the axial fixing mechanism 1 to the connecting mechanism 3, and then through the connecting mechanism 3 to the radial fixing mechanism 2, allowing the force on the radial fixing mechanism 2 to be transferred to the support device 20. Thus, the support device 20 supports the blade body 101. It should be noted that the support device 20 is provided with fixing holes adapted to the radial fixing mechanism 2.

[0036] In one embodiment, such as Figure 3 , 5 As shown, the axial fixing mechanism 1 includes a fixing rod 11 passing through the mounting hole 102, and a receiving part 12 selectively disposed on the fixing rod 11 and allowed to be fixed together with the fixing rod 11. It should be noted that the receiving part 12 is located below the blade body 101 so that it can receive the blade body 101.

[0037] In the illustrated embodiment, such as Figure 3 , 5 As shown, a first external thread (not shown) is also provided on the fixing rod 11 along its axial direction, such that the external thread is located in the mounting hole 102 and extends below the blade body 101. At the same time, the receiving part 12 includes a locking member 121 that engages with the external thread.

[0038] Specifically, such as Figure 3 , 5 As shown, the locking member 211 is configured as a nut, and the nut can engage with the external thread located on the fixing rod 11. Furthermore, it should be noted that the radial width of the locking member 121 is set to be larger than the mounting hole 102, so that the locking member 121 can abut against the blade body 101.

[0039] According to a preferred embodiment of the present invention, such as Figure 3 , 5 As shown, the receiving part 12 further includes a buffer member 122, which is sleeved on the locking member 121 in an axially upward direction and allows it to abut against the blade body 101. The buffer member 122 is made of any material capable of elastic deformation, thereby buffering the force exerted on the blade body 101. In this embodiment, the buffer member 122 is made of elastic rubber.

[0040] In one embodiment, such as Figure 5As shown, the buffer 122 is axially upwardly curved, with its curvature comparable to that of the blade body 101. This allows the buffer 122 to fit snugly against the blade body. This increases the contact area between the buffer 122 and the blade body 101, thereby reducing the pressure exerted on the blade body 101 by the receiving portion 12. In the illustrated embodiment, the buffer 122 is made of elastic rubber.

[0041] In one embodiment, such as Figure 4 As shown, the connecting mechanism 3 includes a horizontally arranged first connecting plate 31, which is configured to accommodate the axial fixing mechanism 1 and allow it to be fixed relative to the axial fixing mechanism 1. A second connecting plate 32 is provided on the first connecting plate 31, which extends upward along the first connecting plate 31 to accommodate the radial fixing mechanism 2 and allows it to be fixed relative to the radial fixing mechanism 2.

[0042] Specifically, such as Figure 4 As shown, the first connecting plate 31 is configured to be perpendicular to the second connecting plate 32. In this way, the vertical force F1 from the axial fixing mechanism 1 can be converted into a horizontal force F2 via the first connecting plate 31 and the second connecting plate 32.

[0043] In one embodiment, such as Figure 4 As shown, a first connecting hole 311 is provided on the first connecting plate 31, which is configured to accommodate the fixing rod 11. At the same time, a second external thread (not shown) is also provided on the fixing rod 11, such that the second external thread is located in the first connecting hole 311 and extends upward.

[0044] In addition, such as Figure 3 , 5 As shown, the axial fixing mechanism 1 further includes a fastener 13. In this embodiment, the fastener 13 is disposed on the fixing rod 11 and allows the second external thread to engage with each other. It should be noted that the radial width of the fastener 13 is set to be greater than the diameter of the first connecting hole 311.

[0045] In this way, the fastener 13 can abut against the first connecting plate 31, thereby stably fixing the axial fixing mechanism 1 on the first connecting plate 31. In this embodiment, the fastener 13 is configured as a threaded screw.

[0046] In one embodiment, such as Figure 4As shown, a second connecting hole 321 is also provided on the second connecting plate 32, and the second connecting hole 321 is configured to accommodate the radial fixing mechanism 2. At the same time, the radial fixing mechanism 2 is configured to allow movement within the second connecting hole 321, so that the connecting mechanism 3 can be fixed relative to the support device 20 in a selective manner.

[0047] In this embodiment, as Figure 2 , 3 As shown, the radial fixing mechanism 2 includes a threaded fastener 21 passing through the second connecting hole 321, the threaded fastener 21 being configured to allow engagement with the support device 20. Specifically, in the illustrated embodiment, the support device 20 includes a radially inwardly extending threaded hole 201, the threaded hole 201 being configured to allow engagement with the threaded fastener 21.

[0048] According to a preferred embodiment of the present invention, such as Figure 2 , 3 As shown, the axial depth of the screw hole 201 is configured to be less than the length of the threaded fastener 21. In this way, the area where the threaded fastener 21 and the second connecting plate 32 abut against each other is unthreaded. This increases the contact area between the second connecting plate 32 and the screw fastener 21, thereby preventing damage to the threaded fastener from the second connecting plate 32.

[0049] In one embodiment, such as Figure 2 , 3 As shown, the support device 20 also includes a blind hole 202 located radially outside the threaded hole 201. Simultaneously, the radial fastener mechanism 2 also includes a sleeve 22 selectively disposed within the blind hole 202. In this embodiment, the sleeve 22 is configured to allow mating with the threaded fastener 21.

[0050] Specifically, such as Figure 3 , 6 As shown, the sleeve 22 is configured to accommodate the threaded fastener 21 and engages with it. This allows for the directional replacement of sleeves 22 of different sizes depending on the size of the blind hole 202. Consequently, the device 100 can be adapted to support devices 20 of different sizes. Furthermore, this configuration allows the threaded fastener 21 and sleeve 22 to be made of different materials, thereby reducing industrial costs. It should be noted that the structure of the support device 20 is well known to those skilled in the art.

[0051] According to a preferred embodiment of the present invention, such as Figure 3 , 6As shown, a rotating part 211 is also provided at the free end of the threaded fastener 21. The rotating part 211 is constructed in any way that facilitates the application of force. In this embodiment, the rotating part 211 is hexagonal.

[0052] In one embodiment, as shown in the figure, two radial fixing mechanisms 2 are provided and distributed symmetrically on both sides of the axial fixing mechanism 1. In this way, the radial fixing mechanisms 2 can fix the connecting mechanism 3 in a balanced manner.

[0053] According to a preferred embodiment of the present invention, such as Figure 3 As shown, two first connecting plates 31 are arranged in a corresponding manner, and a first reinforcing plate 33 is fixedly arranged between the opposing first connecting plates 31, such that the second connecting plate 32 is fixedly fixed to the first connecting plate 31 and the first reinforcing plate 33 respectively in the axial direction. In this way, the connection between the first connecting plate 31 and the second connecting plate 32 can be further strengthened.

[0054] According to a preferred embodiment of the present invention, such as Figure 3 As shown, a second reinforcing plate 34 is also provided on the first connecting plate 31 and the second connecting plate 32. In this way, the connection between the first connecting plate 31 and the second connecting plate 32 can be further strengthened.

[0055] The operation of the turbine blade suspension device according to this utility model is as follows.

[0056] First, the connecting mechanism 3 is mounted on the blade body 101. Simultaneously, the fixing rod 11 is inserted into the first connecting hole 311, and the buffer 122 and locking member 121 are sequentially mounted on the fixing rod 11, cooperating with it to support the blade body 101. Furthermore, a fastener 13 is mounted on the fixing rod 11, cooperating with it and abutting against the first connecting plate 31. Thus, the blade body 101 and the connecting mechanism 3 are relatively fixed together by the axial fixing mechanism 1.

[0057] Next, a sleeve 22 that can be fitted into the blind hole 202 is provided. Then, a threaded fastener 21 is inserted into the sleeve 22 and moved into the threaded hole 201, where it engages with the threaded hole 201. Thus, the connecting mechanism 3 and the support device 20 are fixed together relative to each other by the radial fixing mechanism 1.

[0058] During this process, the force (such as gravity) acting on the blade body 101 is transmitted along the axial fixing mechanism 1 to the connecting mechanism 3, and then through the connecting mechanism 3 to the radial fixing mechanism 2, so that the force on the radial fixing mechanism 2 can be transferred to the support device 20. Thus, the blade body 101 is supported by the support device 20.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A turbine blade suspension device, wherein the turbine blade (10) includes a blade body (101) and a mounting hole (102) disposed on the blade body (101) and extending along the axial direction for accommodating the device (100). characterized in that The device (100) includes an axial fixing mechanism (1) that is selectively inserted into the mounting hole (102) and allows it to be fixed relative to the blade body (101), and a radial fixing mechanism (2) that is selectively inserted into the support device (20) and allows it to be fixed relative to the support device (20). It also includes a connecting mechanism (3) for selectively connecting the axial fixing mechanism (1) and the radial fixing mechanism (2) together, so that the force exerted by the blade body (101) on the axial fixing mechanism (1) is transmitted to the support device (20) via the connecting mechanism (3) and the radial fixing mechanism (2), thereby enabling the support device (20) to support the blade body (101).

2. The water turbine blade suspension device of claim 1, wherein The axial fixing mechanism (1) includes a fixing rod (11) passing through the mounting hole (102) and a receiving part (12) that is fixedly disposed on the fixing rod (11) and allows the blade body (101) to be received.

3. The hydraulic turbine blade suspension device of claim 2, wherein The fixing rod (11) is also provided with a first external thread along its axial direction, and the first external thread is located in the mounting hole (102). The receiving part (12) includes a locking member (121) that cooperates with the external thread, and a buffer member (122) that is provided axially upward on the locking member (121) and allows it to abut against the blade body (101).

4. The hydraulic turbine blade suspension device of claim 3, wherein The buffer (122) is made of any material that allows elastic deformation, and its axial upward curvature is comparable to that of the blade body (101), so that the buffer (122) can fit into the blade body (101).

5. The hydraulic turbine blade suspension device of claim 4, wherein The connecting mechanism (3) includes a first connecting plate (31) arranged horizontally to accommodate the axial fixing mechanism (1) and allowing it to be fixed relative to the axial fixing mechanism (1), and a second connecting plate (32) arranged on the first connecting plate (31) and extending upward to accommodate the radial fixing mechanism (2) and allowing it to be fixed relative to the radial fixing mechanism (2).

6. The hydraulic turbine blade suspension apparatus of claim 5, wherein, A first connecting hole (311) is provided on the first connecting plate (31), the first connecting hole (311) is configured to allow the fixing rod (11) to be accommodated, and a second external thread is also provided on the fixing rod (11), such that the second external thread is located in the first connecting hole (311) and extends upward. The axial fixing mechanism (1) also includes a fastener (13) that allows the second external thread to cooperate with each other, so that the fixing rod (11) can be relatively fixed on the first connecting plate (31).

7. The hydraulic turbine blade suspension apparatus of claim 6, wherein A second connecting hole (321) is also provided on the second connecting plate (32). The radial fixing mechanism (2) is selectively inserted into the second connecting hole (321) and is allowed to be fixed together with the support device (20) so that the connecting mechanism (3) is relatively fixed on the support device (20).

8. The hydraulic turbine blade suspension apparatus of claim 7, wherein, The support device (20) includes a radially inwardly extending screw hole (201), and the radial fixing mechanism (2) includes a threaded fastener (21) passing through a second connecting hole (321), the threaded fastener (21) being configured to allow it to engage with the screw hole (201).

9. The hydraulic turbine blade suspension apparatus of claim 8, wherein, The support device (20) also includes a blind hole (202) located radially outside the screw hole (201), and the radial fixing mechanism (2) also includes a sleeve (22) selectively disposed in the blind hole (202) and cooperating with the blind hole (202), the sleeve (22) being configured to allow the threaded fastener (21) to be accommodated and to be fitted together with the threaded fastener (21).

10. The hydraulic turbine blade suspension apparatus of claim 9, wherein, The radial fixing mechanism (2) is provided in two parts and is distributed symmetrically on both sides of the axial fixing mechanism (1) along the axial fixing mechanism (1) so that the connecting mechanism (3) can be fixed in a balanced manner.

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