Device for accurately controlling vibration of rotary hydraulic unit

Abstract

The utility model relates to the technical field of vibration, in particular to a device for accurately controlling the vibration of a rotary hydraulic unit, which comprises a rotating shaft, a rotor is fixedly connected to the outer wall of the rotating shaft, a first fixing ring is fixedly connected to the upper end of the rotating shaft, and a plurality of first connecting rods are rotatably connected to the bottom end of the first fixing ring. A weighting block is fixedly connected to the lower end of the first connecting rod, a second connecting rod is rotatably connected to the bottom end of the first connecting rod, a second fixing ring is fixedly connected to the lower end of the rotating shaft, the second fixing ring is a hollow ring, a plurality of moving grooves are formed in the top end of the second fixing ring, and a third connecting rod is rotatably connected to the bottom end of the second connecting rod; the third connecting rod penetrates through the moving groove into the second fixing ring, and one side of the third connecting rod is fixedly connected with an extrusion plate. Compared with the prior art, the situation that the rotating shaft inclines is reduced, the structure is simple, the situation that use is affected by water leakage is not prone to occurring, and practicability is higher.

Description

Technical Field

[0001] This utility model relates to the field of vibration and oscillation technology, and in particular to a device for precisely controlling the vibration and oscillation of a rotary hydraulic turbine unit. Background Technology

[0002] A hydroelectric generator set, also known as a "hydro turbine generator set," is a power generation unit composed of a turbine and a generator on a hydroelectric power station. It is the main power equipment for producing electricity in a hydroelectric power station. When the water flowing through the turbine passes through the hydroelectric power station, it converts the water energy into mechanical energy that drives the machinery to rotate. The generator then converts the mechanical energy into electrical energy for output.

[0003] In the prior art, Chinese Patent No. CN222415051U proposes a device for precisely controlling the oscillation of a rotary hydraulic turbine unit. This device can be applied to existing units, has a simple structure, occupies little space, and ensures oscillation balance efficiency, as well as the accuracy, safety, and overall stability of the device. However, in practical applications, the device maintains balance through water tanks at the upper and lower ends of the inner cavity and several water pipes, resulting in too many water pipe connection components in the inner cavity. After long-term rotational operation, the water pipe connection positions are prone to loosening, leading to water leakage that is difficult to detect and affects the use of the device. Therefore, we disclose a device for precisely controlling the oscillation of a rotary hydraulic turbine unit. Utility Model Content

[0004] The purpose of this invention is to propose a device for precisely controlling the oscillation of a rotary hydraulic turbine unit to solve the problem of water leakage within the device affecting its use.

[0005] To achieve the above objectives, this utility model provides a device for precisely controlling the oscillation of a rotary hydraulic turbine unit, comprising a rotating shaft, a rotor fixedly connected to the outer wall of the rotating shaft, a first fixed ring fixedly connected to the upper end of the rotating shaft, a plurality of first connecting rods rotatably connected to the bottom end of the first fixed ring, a weight fixedly connected to the lower end of the first connecting rods, a second connecting rod rotatably connected to the bottom end of the first connecting rods, a second fixed ring fixedly connected to the lower end of the rotating shaft, the second fixed ring being a hollow ring, a plurality of movable grooves being formed at the top end of the second fixed ring, a third connecting rod rotatably connected to the bottom end of the second connecting rods, the third connecting rod passing through the movable grooves into the second fixed ring, a pressing plate fixedly connected to one side of the third connecting rod, a water bladder fixedly connected to the inner wall of the second fixed ring, one side of the pressing plate being in contact with the water bladder, the first fixed ring being located inside the rotor, the second fixed ring being located inside the rotor, and the pressing plate being located inside the second fixed ring.

[0006] Preferably, a plurality of limiting blocks are fixedly connected to the outer side of the bottom end of the first fixing ring. The limiting blocks are triangular blocks and are located on one side of the first connecting rod.

[0007] Preferably, the length of the first connecting rod is greater than the length of the second connecting rod.

[0008] Preferably, the water bladder is annular and the extrusion plate is arc-shaped.

[0009] Preferably, the moving groove is a rectangular groove, the third connecting rod and the extrusion plate form a T-shaped frame, and the width of the extrusion plate is greater than the width of the moving groove.

[0010] Preferably, the third connecting rod is slidably connected to the inner cavity of the moving groove and the second fixing ring.

[0011] The beneficial effects of this utility model are as follows: By fixing the relative positions of the rotating shaft, rotor, and first fixed ring, the first fixed ring will also rotate when the rotating shaft and rotor rotate. When the first fixed ring rotates, the first connecting rod is subjected to centrifugal force and rotates towards the inner wall of the rotor. When the first connecting rod rotates, it will drive the second connecting rod to move. When the second connecting rod moves, it can drive the third connecting rod to move in the moving groove and the third connecting rod. When the third connecting rod moves, it will drive the extrusion plate to move and extrude the water bag, thereby causing the water in the water bag to flow in the direction of less pressure. This reduces the gravity of the water on the side of the second fixed ring and the first fixed ring that tends to tilt downwards, while increasing the gravity of the water on the corresponding side of the second fixed ring and the first fixed ring. Then, the influence of the gravity of the water in the water bag will cause the second fixed ring to tilt towards the side with increased gravity, thereby reducing the occurrence of the rotating shaft tilting. Moreover, the structure is simple and less prone to water leakage affecting use, making it more practical.

[0012] The limiting block can restrict the rotation angle of the first connecting rod, prevent the first connecting rod from colliding with the first fixed ring, and extend the service life of the first fixed ring, the first connecting rod and the weight block. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0014] Figure 2 This is a partially cut-away three-dimensional structural diagram of the rotor of this utility model;

[0015] Figure 3 This is a partially cutaway three-dimensional structural diagram of the second fixing ring of this utility model.

[0016] The diagram is marked as follows:

[0017] 1. Shaft; 2. Rotor; 3. First fixing ring; 4. First connecting rod; 5. Limiting block; 6. Second connecting rod; 7. Weight block; 8. Second fixing ring; 9. Moving groove; 10. Third connecting rod; 11. Extrusion plate; 12. Water bladder. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0019] like Figures 1-3As shown, a device for precisely controlling the oscillation of a rotary hydraulic turbine unit includes a rotating shaft 1, a rotor 2 fixedly connected to the outer wall of the rotating shaft 1, a first fixed ring 3 fixedly connected to the upper end of the rotating shaft 1, a plurality of first connecting rods 4 rotatably connected to the bottom end of the first fixed ring 3, a weight block 7 fixedly connected to the lower end of the first connecting rods 4, a second connecting rod 6 rotatably connected to the bottom end of the first connecting rods 4, a second fixed ring 8 fixedly connected to the lower end of the rotating shaft 1, the second fixed ring 8 being a hollow ring, a plurality of moving grooves 9 being opened at the top end of the second fixed ring 8, a third connecting rod 10 rotatably connected to the bottom end of the second connecting rods 6, the third connecting rod 10 passing through the moving grooves 9 into the second fixed ring 8, a pressing plate 11 fixedly connected to one side of the third connecting rod 10, and the inner wall of the second fixed ring 8 being fixedly connected to the rotor 2. A water bladder 12 is fixedly connected to the rotor 2. One side of the extrusion plate 11 is attached to the water bladder 12. The first fixing ring 3 is located inside the rotor 2, the second fixing ring 8 is located inside the rotor 2, and the extrusion plate 11 is located inside the second fixing ring 8. The length of the first connecting rod 4 is greater than the length of the second connecting rod 6. The water bladder 12 is annular, the extrusion plate 11 is an arc-shaped plate, and the moving groove 9 is a rectangular groove. The third connecting rod 10 and the extrusion plate 11 form a T-shaped frame. The width of the extrusion plate 11 is greater than the width of the moving groove 9. The third connecting rod 10 is slidably connected to the inner cavity of the moving groove 9 and the second fixing ring 8. In use, the rotor 2 is fixedly connected to the outer wall of the rotating shaft 1, and the first fixing ring 3 is fixedly connected to the upper end of the rotating shaft 1, so that the relative positions of the rotating shaft 1, the rotor 2, and the first fixing ring 3 are fixed. When shaft 1 and rotor 2 rotate, the first fixed ring 3 also rotates. Several first connecting rods 4 are rotatably connected to the bottom end of the first fixed ring 3. A weight 7 is fixedly connected to the lower end of each first connecting rod 4, causing the first connecting rod 4 to rotate towards the inner wall of rotor 2 under centrifugal force when the first fixed ring 3 rotates. This strengthens the centrifugal force acting on the first connecting rod 4. A second connecting rod 6 is rotatably connected to the bottom end of the first connecting rod 4, causing the second connecting rod 6 to move when the first connecting rod 4 rotates. A second fixed ring 8 is fixedly connected to the lower end of the rotating shaft 1, fixing the rotating shaft 1 and the second fixed ring 8 relative to each other. The second fixed ring 8 is a hollow ring, and several moving grooves 9 are formed at its top end. A third connecting rod 10 is rotatably connected to the bottom end of rod 6. The third connecting rod 10 passes through the moving groove 9 into the second fixed ring 8, so that when the second connecting rod 6 moves, it can drive the third connecting rod 10 to move within the moving groove 9 and the third connecting rod 10. A squeezing plate 11 is fixedly connected to one side of the third connecting rod 10, and a water bladder 12 is fixedly connected to the inner wall of the second fixed ring 8. One side of the squeezing plate 11 is in contact with the water bladder 12, so that when the third connecting rod 10 moves, it drives the squeezing plate 11 to move and squeeze the water bladder 12. This causes the water in the water bladder 12 to flow in the direction of less pressure, reducing the weight of the water on one side of the second fixed ring 8 and the first fixed ring 3, which tend to tilt downwards, and increasing the weight of the water on the corresponding side of the second fixed ring 8 and the first fixed ring 3.Then, the second fixing ring 8, under the influence of the water's gravity inside the water bladder 12, tends to tilt towards the side with increased water gravity, thereby reducing the possibility of the rotating shaft 1 tilting. The structure is simple; the water is enclosed in the water bladder 12, with no external connection points, making water leakage less likely to affect use, thus increasing practicality. The length of the first connecting rod 4 is greater than the length of the second connecting rod 6, resulting in a greater centrifugal force on the first connecting rod 4. The water bladder 12 is annular, ensuring a uniform water gravity within it. The extrusion plate 11 is arc-shaped, ensuring that the extrusion plate 11 and the water... The water bag 12 has a better fit. The movable groove 9 is rectangular, and the third connecting rod 10 and the extrusion plate 11 form a T-shaped frame. The width of the extrusion plate 11 is greater than the width of the movable groove 9, thus restricting the movement direction of the third connecting rod 10. This allows the third connecting rod 10 to move only along the movable groove 9 to extrude the water bag 12. The third connecting rod 10 is slidably connected to the inner cavity of the movable groove 9 and the second fixing ring 8, allowing it to move along the movable groove 9 and within the second fixing ring 8 under the influence of the second connecting rod 6.

[0020] As a preferred embodiment of this example, Figure 2 and Figure 3 As shown, a number of limiting blocks 5 are fixedly connected to the outer side of the bottom end of the first fixed ring 3. The limiting blocks 5 are triangular blocks and are located on one side of the first connecting rod 4, so that the limiting blocks 5 can limit the rotation angle of the first connecting rod 4, avoid the first connecting rod 4 from colliding with the first fixed ring 3, and extend the service life of the first fixed ring 3, the first connecting rod 4 and the weight block 7.

[0021] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0022] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for precisely controlling the hunting of a rotary hydraulic unit, comprising a rotating shaft (1), characterized in that, The outer wall of the rotating shaft (1) is fixedly connected with a rotor (2), the upper end of the rotating shaft (1) is fixedly connected with a first fixed ring (3), the bottom end of the first fixed ring (3) is rotatably connected with a plurality of first connecting rods (4), the lower end of the first connecting rod (4) is fixedly connected with a weight block (7), the bottom end of the first connecting rod (4) is rotatably connected with a second connecting rod (6), the lower end of the rotating shaft (1) is fixedly connected with a second fixed ring (8), the second fixed ring (8) is a hollow ring, a plurality of moving grooves (9) are formed in the top end of the second fixed ring (8), the bottom end of the second connecting rod (6) is rotatably connected with a third connecting rod (10), the third connecting rod (10) penetrates through the moving groove (9) into the second fixed ring (8), one side of the third connecting rod (10) is fixedly connected with a pressing plate (11), the inner wall of the second fixed ring (8) is fixedly connected with a water bag (12), one side of the pressing plate (11) is attached to the water bag (12), the first fixed ring (3) is located in the rotor (2), the second fixed ring (8) is located in the rotor (2), and the pressing plate (11) is located in the second fixed ring (8).

2. The device for precise control of the whirl of a rotary hydraulic unit according to claim 1, characterized in that The outer side of the bottom end of the first fixed ring (3) is fixedly connected with a plurality of limiting blocks (5), the limiting block (5) is a triangular block, and the limiting block (5) is located on one side of the first connecting rod (4).

3. The device for precise control of the whirl of a rotary hydraulic unit according to claim 1, characterized in that The length value of the first connecting rod (4) is greater than the length value of the second connecting rod (6).

4. The device for precise control of the whirl of a rotary hydraulic unit according to claim 1, characterized in that The water bag (12) is annular, and the pressing plate (11) is arc-shaped.

5. The device for precise control of the whirl of a rotary hydraulic unit according to claim 1, characterized in that The moving groove (9) is a rectangular groove, the third connecting rod (10) and the pressing plate (11) form a T-shaped frame, and the width value of the pressing plate (11) is greater than the width value of the moving groove (9).

6. The device for precise control of the whirl of a rotary hydraulic unit according to claim 1, characterized in that The third connecting rod (10) is slidably connected in the moving groove (9) and the inner cavity of the second fixed ring (8).

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