Adjustable turbine blade

Abstract

The utility model discloses an adjustable turbine blade. The shaft comprises a shaft body, and a first cavity is formed in the shaft body; the multiple turbine blades are evenly distributed on the shaft body in the circumferential direction, and one end of each turbine blade is rotationally inserted into the first cavity and provided with a gear; the adjusting part comprises a moving assembly arranged in the shaft body in a sliding mode, and a transmission set matched with the gears in an engaged mode is arranged at the working end of the moving assembly; the transmission part is arranged in the shaft body and is connected with the moving assembly; according to the utility model, when the flow of fluid changes, the transmission part drives the transmission group to move axially through the moving assembly and enables the gears to be meshed, so that the turbine blades are driven to rotate on the shaft body, the contact area between the turbine blades and the fluid is changed, the rotating speed of the shaft body is adjusted and corresponds to the actual flow, and the energy conversion efficiency is ensured.

Description

Technical Field

[0001] This utility model relates to the field of turbine blade technology, and in particular to an adjustable turbine blade. Background Technology

[0002] A turbine is a type of rotary power machinery that converts the energy of a fluid (liquid or gas) into mechanical energy. Its main function is to use the impact of the fluid on the turbine blades to make the turbine rotate, thereby converting the kinetic and pressure energy of the fluid into mechanical energy, which is then used to drive equipment such as generators, pumps, and compressors. It is commonly used in the power, shipbuilding, and aerospace industries.

[0003] However, in actual operation, conventional turbine blades are usually fixed on the turbine, and their angle is difficult to adjust. When the fluid flow rate changes, the matching between the fluid flow rate scouring the blades and the impeller changes and deviates from the predetermined value. If they are not replaced in time, the efficiency will be affected.

[0004] Therefore, an adjustable turbine blade capable of adjusting the blade angle was proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned shortcomings by providing an adjustable turbine blade that allows for adjustment of the blade angle.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an adjustable turbine blade, including a shaft body, with an axially extending first chamber inside;

[0007] Multiple turbine blades are circumferentially distributed on the shaft, and one end of each turbine blade is rotatably inserted into the first chamber and is equipped with a gear.

[0008] The adjusting component includes a movable assembly that is axially slidably disposed within the shaft body. The movable assembly extends to the working end of the first chamber and is provided with a transmission group that meshes with each of the gears. The axial displacement of the movable assembly drives the transmission group to rotate each of the gears.

[0009] A transmission component is disposed within the shaft body and connected to the movable component, for driving the movable component to move axially within the shaft body.

[0010] Furthermore, a second chamber located on one side of the first chamber is also coaxially formed within the shaft body;

[0011] The moving component includes a moving ring, which is axially slidably disposed in the second chamber and connected to the transmission component;

[0012] The movable ring has multiple connecting rods evenly distributed circumferentially on the side closest to the first chamber. One end of each connecting rod is slidably inserted into the first chamber and corresponds to and is connected to each of the racks.

[0013] Furthermore, each of the racks is located on the same side of the corresponding gear.

[0014] Furthermore, the transmission component includes a power unit disposed within the second chamber;

[0015] A lead screw is rotatably disposed in the second chamber and connected to the moving end of the power unit, and the moving ring is threadedly connected to the lead screw.

[0016] Furthermore, the power unit is a brake motor, which is used to constrain the rotation of the lead screw when the power unit is no longer working.

[0017] The beneficial effects of this utility model are reflected in:

[0018] This invention adjusts the fit between the adjustment component and the transmission component. When the fluid flow rate changes, the transmission component drives the transmission group to move axially through the moving assembly and engages the gears, thereby driving each turbine blade to rotate on the shaft. This changes the contact area between the turbine blade and the fluid, thereby adjusting the shaft speed to correspond to the actual flow rate and ensuring energy conversion efficiency. Attached Figure Description

[0019] Figure 1 This is a perspective view of the adjustable turbine blade described in this utility model;

[0020] Figure 2 This is a cross-sectional view of the adjustable turbine blade described in this utility model;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 for Figure 2 A magnified view of point B in the middle.

[0023] In the picture:

[0024] 1. Shaft; 11. First chamber; 12. Second chamber; 2. Turbine vane; 21. Connecting rod; 22. Gear; 3. Adjusting component; 31. Moving assembly; 311. Moving ring; 312. Connecting rod; 32. Transmission assembly; 321. Rack; 4. Transmission component; 41. Power unit; 42. Lead screw; 5. Limiting component; 51. Positioning plate; 511. Slide groove; 52. Clamping block; 53. Elastic unit; 54. Control component; 541. Magnetic suction unit. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0026] Please see Figure 1-4 This utility model discloses an adjustable turbine blade, including a shaft 1 connected to a bearing (not shown in the figure) in a turbine, and an axially extending and annular first chamber 11 inside it;

[0027] Multiple turbine blades 2 are evenly distributed circumferentially on the shaft 1 and are in contact with the external fluid. Each turbine blade 2 has a connecting rod 21 that is rotatably inserted into the first chamber 11 at its bottom, and a gear 22 is provided on it.

[0028] The adjusting component 3 includes a movable component 31 that is axially slidably disposed in the shaft body 1. The working end of the movable component 31 extends into the first chamber 11 and is provided with a transmission group 32 that meshes and matches with each gear 22. The axial displacement of the movable component 31 drives the transmission group 32 to rotate each gear 22.

[0029] The transmission component 4 is disposed inside the shaft 1 and connected to the moving component 31, and is used to drive the moving component 31 to move axially within the shaft 1.

[0030] In practice, when the fluid flow rate changes, the transmission component 4 drives the transmission group 32 to move axially along the shaft 1 through the moving component 31 and meshes with each gear 22, thereby driving each turbine blade 2 to rotate on the shaft 1, thereby changing the contact area between the fluid and each turbine blade 2, so as to change the interaction state between the blades and the fluid, and realize the adjustment of the rotation speed of the shaft 1 to correspond to the actual fluid flow rate.

[0031] In this invention, by adjusting the cooperation between the adjustment component 3 and the transmission component 4, when the fluid flow rate changes, the transmission component 4 drives each turbine blade 2 to rotate together on the shaft 1 through the adjustment component 3, so as to change the contact area between the turbine blade 2 and the fluid according to the actual fluid flow rate, thereby adjusting the rotation speed of the shaft 1 and making it correspond to the actual flow rate, thus ensuring energy conversion efficiency.

[0032] In one embodiment, a second annular chamber 12 is coaxially provided in the shaft 1, located on one side of the first chamber 11. The transmission assembly 32 includes racks 321 that are circumferentially distributed in the first chamber 11 and correspond to and mesh with each gear 22.

[0033] The moving component 31 includes a moving ring 311 that is axially slidably disposed in the second chamber 12 and connected to the transmission component 4;

[0034] The movable ring 311 has a plurality of connecting rods 312 evenly distributed circumferentially on the side near the first chamber 11. One end of each connecting rod 312 is slidably inserted into the first chamber 11 and corresponds to and is connected to each rack 321. The connection between each connecting rod 312 and the first chamber 11 is a dynamic seal connection. When the movable ring 311 moves axially, each connecting rod 312 drives the corresponding rack 321 to move together.

[0035] With this design, when it is necessary to adjust the scouring angle of the turbine blades 2, the transmission component 4 drives the moving ring 311 to move axially along the shaft 1, thereby driving the corresponding racks 321 to move together through each connecting rod 312, so that each rack 321 meshes with the corresponding gear 22 and drives each turbine blade 2 to rotate.

[0036] In one embodiment, each rack 321 is located on the same side of the corresponding gear 22, and each rack 321 meshes with the corresponding gear 22 to drive each turbine blade 2 to rotate synchronously in the same direction.

[0037] In one embodiment, the transmission component 4 includes a power unit 41 disposed in a second chamber 12. A lead screw 42 is also rotatably disposed in the second chamber 12 and connected to the moving end of the power unit 41. The power unit 41 is used to drive the lead screw 42 to rotate, and the lead screw 42 is threadedly connected to the moving ring 311. When the lead screw 42 rotates, it is used to drive the moving ring 311 to move towards or away from the power unit 41.

[0038] With this design, when the moving ring 311 needs to be moved, the power unit 41 drives the lead screw 42 to rotate, thereby causing the moving ring 311 to move closer to or further away from the power unit 41 in the second chamber 12, so that each rack 321 can drive the corresponding turbine blade 2 to rotate through the corresponding gear 22.

[0039] In one embodiment, the power unit 41 is a brake motor, which is used to constrain the rotation of the lead screw 42 when the power unit 41 is no longer working.

[0040] In another embodiment, the shaft 1 is provided with a limiting component 5, including a positioning plate 51 disposed in the second chamber 12 and cooperating with the lead screw 42;

[0041] The positioning plate 51 has two symmetrically distributed grooves 511 located on both sides of the lead screw 42. Each groove 511 has a clamping block 52 for clamping the lead screw 42.

[0042] An elastic unit 53 is provided between each clamping block 52 and the positioning plate 51 to apply a thrust to the corresponding clamping block 52 in a direction away from the lead screw 42;

[0043] The control component 54 is connected to each clamping block 52 and is used to drive the two clamping blocks 52 to move closer to each other.

[0044] With this design, when the power unit 41 is a conventional motor, after the turbine blade 2 is adjusted to the predetermined position, the control component 54 drives the two clamping blocks 52 to move closer to each other until they clamp the lead screw 42, so as to prevent the lead screw 42 from rotating accidentally and affecting the scouring angle of the turbine blade. At this time, each elastic unit 53 is compressed. When it is necessary to release the constraint of the lead screw 42, the control component 54 no longer drives the two clamping blocks 52 to move closer to each other. At this time, each elastic unit 53 loses its constraint and drives the corresponding clamping block 52 to move away from the lead screw 42 until each clamping block 52 separates from the lead screw 42.

[0045] It should be noted that the clamping surfaces of each clamping block 52 and the clamped surfaces of the lead screw 42 have a sufficient coefficient of friction, so that each clamping block 52 has sufficient friction to prevent the lead screw 42 from rotating unexpectedly when clamping the lead screw 42, thereby further ensuring the stability of the turbine blade 2.

[0046] Preferably, the elastic unit 53 can be a spring from the prior art.

[0047] In one embodiment, the control component 54 includes magnetic suction units 541 disposed on two clamping blocks 52;

[0048] One of the magnetic attraction units 541 is an electromagnet. When the electromagnet is energized, the magnetic attraction unit 541 attracts the other magnetic attraction unit 541.

[0049] With this design, when the lead screw 42 needs to be clamped, the corresponding magnetic attraction unit 541 is energized and attracts each other with another magnetic attraction unit 541, thereby driving the two clamping blocks 52 to move closer to each other until the lead screw 42 is clamped. When it is necessary to release the constraint on the lead screw 42, the corresponding magnetic attraction unit 541 is de-energized and loses its magnetic force. At this time, the elastic unit 53 loses its constraint and drives the corresponding clamping block 52 to move away from the lead screw.

[0050] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0051] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0052] Additionally, "multiple" refers to two or more.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable turbine blade, characterized by, It includes a shaft (1) and has an axially extending first chamber (11) inside; Multiple turbine blades (2) are circumferentially distributed on the shaft (1), and one end of each turbine blade (2) is rotatably inserted into the first chamber (11) and equipped with a gear (22); The adjusting component (3) includes a moving assembly (31) that is axially slidably disposed in the shaft (1). The moving assembly (31) extends to the working end of the first chamber (11) and is provided with a transmission group (32) that meshes with each of the gears (22). The axial displacement of the moving assembly (31) drives the transmission group (32) to drive each of the gears (22) to rotate. A transmission component (4) is disposed inside the shaft (1) and connected to the moving component (31) for driving the moving component (31) to move axially within the shaft (1).

2. The adjustable turbine blade of claim 1, wherein: The shaft (1) also has a second chamber (12) coaxially located on one side of the first chamber (11). The transmission assembly (32) includes racks (321) that are circumferentially distributed in the first chamber (11) and correspond to and mesh with each of the gears (22). The moving component (31) includes a moving ring (311), which is axially slidably disposed in the second chamber (12) and connected to the transmission component (4); The movable ring (311) has a plurality of connecting rods (312) evenly distributed around its circumference on the side near the first chamber (11). One end of each connecting rod (312) is slidably inserted into the first chamber (11) and corresponds to and is connected to each rack (321).

3. The adjustable turbine blade of claim 2, wherein: Each of the racks (321) is located on the same side of the corresponding gear (22).

4. The adjustable turbine blade of claim 2, wherein: The transmission component (4) includes a power unit (41) disposed in the second chamber (12); The lead screw (42) is rotatably disposed in the second chamber (12) and connected to the moving end of the power unit (41), and the moving ring (311) is threadedly connected to the lead screw (42).

5. The adjustable turbine blade of claim 4, wherein: The power unit (41) is a brake motor, which is used to constrain the rotation of the lead screw (42) when the power unit (41) is no longer working.

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