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Water turbine rolling/pitching simulation experiment device and control method thereof

A technology for simulating experimental devices and water turbines, which is applied in the direction of machines/engines, hydroelectric power generation, mechanical equipment, etc. It can solve the problems of incomplete simulation of water turbine movement, inability to actually simulate water turbine waves, turbulent flow, etc., and achieve high space utilization , reduce the maximum driving force, and the effect of compact overall structure

Pending Publication Date: 2022-01-28
JIANGSU UNIV OF SCI & TECH
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  • Application Information

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Problems solved by technology

[0004] In the prior art, such as Chinese patent application CN107762709A discloses a horizontal axis tidal energy turbine hydrodynamic performance test platform and testing method, the experimental platform in the patent application can realize the measurement of the key parameters of the hydraulic turbine performance, but it does not Unable to actually simulate disturbances such as waves and turbulent flow when the turbine is driven by tidal energy
Another example is that the Chinese patent application CN112161777A discloses an experimental device for simulating the movement of a water turbine. This patent application utilizes the rotation of the motor to simulate the front and rear rocking motion of the water turbine to control the rocking frequency and amplitude of the water turbine. Swing motion, but the water turbine is actually disturbed by the left and right ocean currents in the ocean current, so this experimental device cannot completely simulate the movement of the water turbine in the ocean current

Method used

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  • Water turbine rolling/pitching simulation experiment device and control method thereof
  • Water turbine rolling/pitching simulation experiment device and control method thereof
  • Water turbine rolling/pitching simulation experiment device and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] like figure 1 and figure 2 As shown, a water turbine roll / pitch simulation experiment device in this embodiment includes a water turbine 1, a roll device 2, and a pitch device 3; the first cabin 4 and the second cabin 5 of the water turbine 1 are all Bosses are processed, and the bosses of the first cabin body 4 and the second cabin body 5 are connected to the second roll rotation rod 6, one end of the roll second rotation rod 6 is fixedly connected to the water turbine 1, and the other end is connected to the first roll rotation rod 6. The rotating rods 8 are fixedly connected, and the two first rotating rods 8 for rolling are located on both sides of the rolling screw rod 36 respectively. water proof. The cross-shaped roll fixing plate can save space reasonably, which greatly improves the space utilization rate of the overall experimental platform and makes the overall structure more compact.

[0047] like Figure 4 As shown, the first connecting rod 15 is fixedl...

Embodiment 2

[0062] like Figure 10 As shown in , it can be known from the motion diagram of the rolling device:

[0063] Among them, θ 1 is the roll angle of the turbine, h is the vertical distance from the roll center of the turbine to the roll platform, x 1 is the moving distance of the pan screw slide 33, and α is the angle between the pan third rotating rod 18 and the pan second rotating rod 6 minus θ 1 angle, L 1 is the length of the third swing rod 18, L 2 is the distance between the joint of the third rotation rod 18 and the second rotation rod 6 from the center of the turbine roll, (sinα) 2 +(cosα) 2 = 1;

[0064] which is get x 1 with theta 1 Relationship:

[0065] x 1 2 -2x 1 L 2 sinθ 1 +2hL 2 cosθ 1 =L 1 2 -h 2 -L 2 2 , get the velocity relation: Then the rotation angle of the output shaft of the pan screw motor 34 is The angular velocity is Among them, I 1 36 leads for the rolling screw mandrel.

[0066] like Figure 11 As shown, it can be see...

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Abstract

The invention discloses a water turbine rolling / pitching simulation experiment device and a control method thereof. The experiment device comprises a water turbine, a rolling device and a pitching device, and the rolling device comprises a rolling fixing plate, a rolling screw rod sliding table and a rolling driving device; the water turbine is hinged to the rolling fixing plate and the rolling screw rod sliding table, and the rolling driving device drives the rolling screw rod sliding block to move so as to drive the water turbine to swing left and right; the pitching device comprises a pitching fixing plate and a pitching driving device; and the rolling fixing plate and the pitching fixing plate are hinged through a bearing seat, and the pitching driving device drives the rolling fixing plate to rotate so as to drive the water turbine to swing front and back. A simulation experiment is controlled by a mechanical device, a high-frequency interference such as waves and turbulent flow can be simulated more accurately and completely, transverse / pitching motion is simulated by adopting different driving mechanisms, and optimal distribution of a driving force is facilitated. The experimental device is high in space utilization rate and compact in overall structure.

Description

technical field [0001] The invention relates to a water turbine movement simulation experiment device, in particular to a water turbine roll / pitch simulation experiment device and a control method thereof. Background technique [0002] As one of ocean energies, tidal current energy has received intense attention at home and abroad in recent years. The coast is rich in tidal energy resources, and ocean energy including tidal current energy will be developed and utilized in the future, which will play an important role in making up for energy shortages and mitigating environmental pollution. As an important device that converts tidal current energy into electric energy, the water turbine's safe work is very important. The performance of the turbine will be affected by turbulent disturbance in the sea. In order to ensure the safe and stable operation of the turbine, it is necessary to understand the state of the turbine when it is disturbed. [0003] At present, the common me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B11/00
CPCF03B11/008Y02E10/20
Inventor 殷宝吉成诗豪荆丰梅王树齐王子威辛伯彧
Owner JIANGSU UNIV OF SCI & TECH