A device for dismounting a wicket gate arm provided on a water turbine

Abstract

The utility model provides a kind of device for being set on water turbine for the guide vane arm is dismantled, water turbine includes body, and the connecting column being set on body, the guide vane arm includes the seat body being threaded on connecting column, and the blade being connected with seat body and extending outward, three threaded holes are also set on seat body along with equidistant mode in the way of circumference. Device includes the fixed mechanism being set on seat body and allowing and seat body relative fixed together, and the driving mechanism being set in fixed mechanism and allowing with connecting column each other abutment in the way of selection. Among them, the driving mechanism includes threaded rod, the threaded rod is threaded on fixed mechanism in the way of screw fit, so that in the process of threaded rod rotating along fixed mechanism driving fixed mechanism guide vane arm movement. Thus, guide vane arm can move smoothly, to improve the efficiency of disassembly and avoid damage to water turbine.

Description

Technical Field

[0001] This utility model relates to the field of turbine guide vane arm disassembly technology, and in particular to a device installed on a turbine for disassembling the guide vane arm. Background Technology

[0002] As the core component of a hydroelectric power generation system, the proper operation of the water turbine is crucial to power generation efficiency. For example... Figure 1 , 2 As shown, the guide vane arm 20 is a key component of the water guiding mechanism of the turbine 10. Its rotation controls the flow of water and the flow rate, which directly affects the output power and operational stability of the turbine 10.

[0003] In the prior art, a water turbine 10 typically includes a body 101 and a connecting column 102 disposed on the body 101. A guide vane arm 20 is fitted onto the connecting column 102 via its base 201 and can rotate around the connecting column 102. The base 201 has three threaded holes 2011 equidistantly arranged along its circumference for connecting and fixing related components.

[0004] However, in actual maintenance, it is often necessary to remove the guide vane arm 20 from the turbine 10. In the existing technology, the disassembly method usually adopts hammering, prying and other methods, which are not only inefficient, but also very likely to damage the turbine 10. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a device for disassembling guide vane arms on a water turbine. To achieve the above objective, this utility model adopts the following technical solution: A device for disassembling guide vane arms on a water turbine is disclosed. The water turbine includes a main body and a connecting column mounted on the main body. The guide vane arm includes a base sleeved on the connecting column and blades connected to the base and extending outward. Three threaded holes are also provided on the base at equal intervals along the circumference. The device includes a fixing mechanism mounted on the base and allowing it to be fixed relative to the base, and a drive mechanism mounted on the fixing mechanism and allowing it to abut against the connecting post in a selectable manner. The driving mechanism includes a threaded rod, which is threaded onto the fixed mechanism so that the fixed mechanism drives the guide vane arm to move as the threaded rod rotates along the fixed mechanism.

[0006] Furthermore, a screwing part is provided on the threaded rod, which is polygonal in shape to facilitate its connection with the force-applying device.

[0007] Furthermore, a lifting part is also provided on the screwing part, and the lifting part is configured in any way that facilitates connection with lifting equipment.

[0008] Furthermore, the fixing mechanism includes a connecting part and at least one fixing part that is rotatably disposed on the connecting part and allows it to engage with the threaded hole.

[0009] Furthermore, the fixing part includes a screw that allows it to engage with the threaded hole, and a nut disposed on the screw for driving the screw to rotate, the nut being configured to allow it to abut against the connecting part.

[0010] Furthermore, the fixing part is provided in three parts, allowing it to correspond to the three threaded holes.

[0011] Furthermore, the connecting part includes an abutment plate disposed above the connecting post, and a connecting plate connected to the abutment plate and extending outward, wherein there are three connecting plates, which allow the fixing part to be received.

[0012] Furthermore, the abutment plate is configured to be circular.

[0013] Furthermore, the connecting plate includes a connecting surface with a curvature comparable to that of the connecting plate, and a fixing surface disposed on the connecting surface and extending outward.

[0014] Furthermore, a transition plate is provided between the abutment plate and the connecting plate. The transition plate is inclined, and the distance between the abutment plate and the seat is greater than the distance between the connecting plate and the seat.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention includes a fixing mechanism that allows the guide vane arm to be fixed relative to the base, and a drive mechanism that allows selective abutment between the guide vane arm and the connecting column. The drive mechanism includes a threaded rod that is threadedly fitted onto the fixing mechanism, driving the fixing mechanism to move the guide vane arm as the threaded rod rotates along the fixing mechanism. This allows the guide vane arm to move smoothly, improving disassembly efficiency and preventing damage to the turbine. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of the water turbine, guide vane arm, and device installed on the water turbine for disassembling the guide vane arm, which are assembled together according to an embodiment of the present utility model. Figure 2 This is a schematic diagram of the overall structure of the guide vane arm in the prior art; Figure 3 This is a schematic diagram of the overall structure of a device installed on a water turbine for disassembling guide vane arms, according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the overall structure of the fixing mechanism in an embodiment of this utility model.

[0017] In the above figures: turbine 10, body 101, connecting column 102, guide vane arm 20, base 201, threaded hole 2011, blade 202, device 100 installed on the turbine for disassembling the guide vane arm, fixing mechanism 1, connecting part 11, abutment plate 111, connecting plate 112, connecting surface 1121, fixing surface 1122, transition plate 113, fixing part 12, screw 121, nut 122, drive mechanism 2, threaded rod 21, screwing part 22, hoisting part 23. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0019] To better understand the purpose, structure, and function of this utility model, the following detailed description, in conjunction with the accompanying drawings, describes a device installed on a water turbine for disassembling guide vane arms.

[0020] like Figure 1 , 2 As shown, the turbine 10 typically includes a body 101 and a connecting post 102 disposed on the body 101. The connecting post 102 is configured to allow passage through a guide vane arm 20, enabling the guide vane arm 20 to rotate along the connecting post 102. Specifically, the guide vane arm 20 includes a base 201 sleeved on the connecting post 102 and blades 202 connected to the base 201 and extending outward.

[0021] At the same time, such as Figure 2 As shown, three threaded holes 2011 are also provided equidistantly along the circumference on the base 201. It should be noted that the kinematic relationship, force transmission relationship, and functions between the turbine 10 and the guide vane arm 20 are well known to those skilled in the art. Therefore, they will not be described in detail here.

[0022] Figure 3 The illustration schematically shows a device installed on a water turbine for disassembling guide vane arms according to the present invention. In such a way... Figure 3In the illustrated embodiment, the device 100 for disassembling the guide vane arm on the turbine includes a fixing mechanism 1, which is mounted on the base 201 and allows it to be fixed relative to the base 201. The device 100 also includes a drive mechanism 2, which is mounted on the fixing mechanism 1 and allows it to abut against the connecting column 102 in a selective manner.

[0023] In this embodiment, as Figure 3 As shown, the drive mechanism 2 includes a threaded rod 21, which is threadedly mounted on the fixed mechanism 1. Specifically, the fixed mechanism 1 has a threaded hole (not shown) that mates with the threaded rod 21, and the position of the threaded hole corresponds to that of the connecting post 102. In this way, the threaded rod 21 can drive the fixed mechanism 1 to move the guide vane arm 20 as it rotates along the fixed mechanism 1.

[0024] In this configuration, when the device 100 is needed to remove the guide vane arm 20 from the turbine 10, the fixing mechanism 1 is first mounted on the base 201, and the fixing mechanism 1 and the base 201 are fixed together. At the same time, the drive mechanism 2 is mounted on the fixing mechanism 1, and the threaded rod 21 and the threaded hole (not shown in the figure) are engaged with each other.

[0025] At this point, a circumferential force is applied to the threaded rod 21, causing it to rotate along the threaded hole until the threaded rod 21 and the connecting post 102 abut against each other. As the force is continuously applied to the threaded rod 21, it will continue to rotate along the threaded hole.

[0026] During this process, the threaded rod 21 drives the fixing mechanism 1 to move the base 201 away from the connecting column 102 until the guide vane arm 20 disengages from the connecting column 102. This completes the operation of removing the guide vane arm 20 from the turbine 10. It should be noted that the length of the threaded rod 21 is set to be greater than the vertical height of the base 201.

[0027] In one embodiment, such as Figure 3 As shown, the drive mechanism 2 also includes a screwing part 22, which is fixedly mounted on the threaded rod 21. The screwing part 22 is configured in any way that facilitates connection with a force-applying device (not shown in the figure). In this embodiment, the screwing part 22 is configured as a polygonal structure, and the force-applying device includes, but is not limited to, a torque wrench or a hydraulic wrench. In this way, the threaded rod 21 can be rotated along the fixed mechanism 1 in a force-saving manner.

[0028] According to a preferred embodiment of the present invention, such as Figure 3As shown, the drive mechanism 2 also includes a lifting section 23, which is disposed on the screwing section 22 and configured in any way that facilitates connection with a lifting device (not shown in the figure). In this embodiment, the lifting section 23 is configured as a lifting ring.

[0029] It should be noted that the radial width of the hoisting part 23 is set to be smaller than that of the screwing part 22. In this way, the force-applying device (not shown in the figure) can be connected to the screwing part 22 in the vertical direction, thereby avoiding interference between the force-applying device and the hoisting part 23 during the connection process.

[0030] In one embodiment, such as Figure 3 As shown, the fixing mechanism 1 includes a connecting portion 11 and a fixing portion 12 rotatably disposed on the connecting portion 11. Specifically, a connecting hole (not shown in the figure) is provided on the connecting portion 11, which is configured to accommodate the fixing portion 12. In this embodiment, the fixing portion 12 is configured to engage with the threaded hole 2011, thereby allowing the seat 201 and the fixing mechanism 1 to be fixed together relative to each other.

[0031] In the illustrated embodiment, such as Figure 3 As shown, the fixing part 12 includes a screw 121 that allows it to engage with the threaded hole 2011, and a nut 122 disposed on the screw 121 for driving the screw 121 to rotate. The nut 122 is configured to allow it to abut against the connecting part 11.

[0032] According to a preferred embodiment of the present invention, such as Figure 3 , 4 As shown, the fixing part 12 is provided in three parts, allowing it to correspond to the three threaded holes 2011. In this way, the fixing part 12 can be fixed to the seat 201 in the circumferential direction, thereby increasing the connection strength between the fixing mechanism 1 and the guide vane arm 20, and making the guide vane arm 20 subject to force balance during movement.

[0033] In one embodiment, such as Figure 3 As shown, the connecting part 11 includes an abutment plate 111, which is disposed above the connecting post 102. The connecting part 11 also includes a connecting plate 112, which is connected to the abutment plate 111 and extends outward. In the illustrated embodiment, three connecting plates 112 are provided, with each connecting plate 112 receiving one fixing part 12.

[0034] According to a preferred embodiment of the present invention, such as Figure 3 , 4As shown, the abutment plate 111 is circular. In this way, the abutment plate 111 can bear the force from the connecting plate 112 in a uniform manner.

[0035] In one embodiment, such as Figure 4 As shown, the connecting plate 112 includes a connecting surface 1121, the curvature of which is configured to correspond to that of the connecting plate 112, so that the connecting surface 1121 and the connecting plate 112 can fit together. Simultaneously, a fixing surface 1122 is provided on the connecting surface 1121 along its contour. It should be noted that the connecting hole is provided on the fixing surface 1122, allowing the fixing part 12 to be received.

[0036] According to a preferred embodiment of the present invention, such as Figure 3 As shown, the connecting portion 11 further includes a transition plate 113, which is disposed between the abutment plate 111 and the connecting plate 112. The transition plate 113 is inclined, and the distance between the abutment plate 111 and the base 201 is greater than the distance between the connecting plate 112 and the base 201. In this way, the device 100 can be applied to a water turbine 10 with the connecting column 102 extending outward. Therefore, the applicability of the device 100 is improved.

[0037] The operation of the device 100 for disassembling guide vane arms on a water turbine according to this utility model is as follows.

[0038] First, the connecting part 11 is set on the connecting post 102, and each fixing part 12 is connected to the threaded hole 2011 on the base 201. At the same time, the driving mechanism 2 is set on the fixing mechanism 1, and the threaded rod 21 and the threaded hole (not shown in the figure) are engaged with each other.

[0039] At this time, a force-applying device (not shown in the figure) is installed on the screwing part 22, and the force-applying device and the screwing part 22 are fixed together relative to each other. Then, the force-applying device is activated, and the force-applying device continuously applies a force to the screwing part 22 in the circumferential direction.

[0040] During this process, the force-applying device will continuously drive the threaded rod 21 to rotate until the threaded rod 21 and the connecting post 102 abut against each other. As force is continuously applied to the threaded rod 21, the threaded rod 21 will continue to rotate along the threaded hole.

[0041] During this process, the threaded rod 21 drives the fixing mechanism 1 to move the seat 201 away from the connecting column 102 until the guide vane arm 20 disengages from the connecting column 102. Finally, the hoisting equipment (not shown in the figure) and the hoisting part 23 are connected together, and the hoisting equipment is started, so that the hoisting equipment continuously applies force to the hoisting part 23 until the guide vane arm 20 moves off the connecting column 102. Thus, the operation of removing the guide vane arm 20 from the turbine 10 is completed.

[0042] 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 device for disassembling guide vane arms on a water turbine, the water turbine (10) including a body (101) and a connecting column (102) disposed on the body (101), the guide vane arm (20) including a seat (201) sleeved on the connecting column (102) and blades (202) connected to the seat (201) and extending outward, and three threaded holes (2011) are also provided on the seat (201) at equal intervals along the circumference. Its features are, The device (100) includes a fixing mechanism (1) disposed on the base (201) and allowing it to be fixed relative to the base (201), and a drive mechanism (2) disposed on the fixing mechanism (1) and allowing it to abut against the connecting post (102) in a selected manner. The drive mechanism (2) includes a threaded rod (21), which is threaded onto the fixed mechanism (1) so that the fixed mechanism (1) is driven to move the guide vane arm (20) during the rotation of the threaded rod (21) along the fixed mechanism (1).

2. The device for disassembling guide vane arms on a water turbine according to claim 1, characterized in that, A screwing part (22) is also provided on the threaded rod (21), the screwing part (22) being polygonal in shape so as to facilitate its connection with the force-applying device.

3. The device for disassembling guide vane arms on a water turbine according to claim 2, characterized in that, A hoisting part (23) is also provided on the screwing part (22), and the hoisting part (23) is configured in any way that facilitates connection with hoisting equipment.

4. The device for disassembling guide vane arms on a water turbine according to any one of claims 1-3, characterized in that, The fixing mechanism (1) includes a connecting part (11) and at least one fixing part (12) which is rotatably disposed on the connecting part (11) and allows it to engage with the threaded hole (2011).

5. The device for disassembling guide vane arms on a water turbine according to claim 4, characterized in that, The fixing part (12) includes a screw (121) that allows it to engage with the threaded hole (2011), and a nut (122) disposed on the screw (121) for driving the screw (121) to rotate, the nut (122) being configured to allow it to abut against the connecting part (11).

6. The device for disassembling guide vane arms on a water turbine according to claim 5, characterized in that, The fixing part (12) is provided in three parts, and is configured to correspond to the three threaded holes (2011) with each other.

7. The device for disassembling guide vane arms on a water turbine according to claim 6, characterized in that, The connecting part (11) includes an abutment plate (111) disposed above the connecting post (102), and a connecting plate (112) connected to the abutment plate (111) and extending outward, wherein there are three connecting plates (112) and such that they can support the fixing part (12).

8. The device for disassembling guide vane arms on a water turbine according to claim 7, characterized in that, The abutment plate (111) is circular.

9. The device for disassembling guide vane arms on a water turbine according to claim 8, characterized in that, The connecting plate (112) includes a connecting surface (1121) with a curvature equivalent to that of the connecting plate (112), and a fixing surface (1122) disposed on the connecting surface (1121) and extending outward.

10. The device for disassembling guide vane arms on a water turbine according to claim 9, characterized in that, A transition plate (113) is also provided between the abutment plate (111) and the connecting plate (112). The transition plate (113) is set in an inclined manner, such that the distance between the abutment plate (111) and the seat (201) is greater than the distance between the connecting plate (112) and the seat (201).

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