Impact turbine of oscillating water column wave energy power generation device

Abstract

The utility model discloses an impact turbine of an oscillating water column wave energy power generation device, which relates to the technical field of power generation devices, and comprises a first hub head, a rotor structure and a second hub head, a plurality of fixed guide vanes are respectively arranged on the first hub head and the second hub head, the rotor structure comprises a rotor ring and a movable vane group fixed on the outer wall of the rotor ring, a buffer gap is reserved between the fixed guide vanes and the movable vane group, and a buffer vane is further arranged in the buffer gap. According to the impact turbine of the oscillating water column wave energy power generation device, the flow speed and direction of air flow can be finely controlled, the air flow impacts the moving blade set in the optimal state, and in the process that the air flows to the downstream, the degree that the air impacts the downstream guide blades in the forward direction is reduced as well.

Description

Technical Field

[0001] The utility model relates to the technical field of power generation devices, in particular to an impact turbine of an oscillating water column wave energy power generation device. Background Art

[0002] In the prior art, the oscillating water column wave energy power generation device provides a clean and renewable energy solution by converting wave energy into electrical energy. This technology usually involves three main conversion stages: first, the up and down oscillation of the waves causes the water column to vibrate, thereby driving the air in the air chamber to reciprocate; second, this reciprocating motion of the air drives the air turbine to rotate unidirectionally through the air pipe; finally, the rotational mechanical energy of the air turbine is converted into electrical energy through the generator. In this series of conversion processes, the air turbine, as a core component, has a decisive influence on the overall conversion efficiency. At present, the air turbines commonly used in oscillating water column wave energy power generation devices include Wells turbines and impulse turbines. Among them, the Wells turbine is widely used due to its simple structure, high efficiency and relatively low cost.

[0003] Although the impulse turbines of the prior art can achieve a higher peak efficiency in theory, they are often limited by the problem of excessive attack angle in practical applications, which not only affects the power generation efficiency of the turbine, but may also cause large flow blockage and pressure loss. This is because there is an inherent angular misalignment between the flow direction at the turbine rotor outlet and the installation angle of the downstream guide vane inlet. When the flow deflection at the inlet guide vane is large, this angular misalignment will lead to a significant performance degradation, thereby limiting the overall performance of the oscillating water column wave energy power generation device. Therefore, the prior art still needs to be improved in terms of improving conversion efficiency, reducing losses and adapting to changing wave conditions. Utility Model Content

[0004] The purpose of the utility model is to provide an oscillating water column wave energy power generation device, an impulse turbine, to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solution: an oscillating water column wave energy power generation device impulse turbine, comprising: a first hub head, a rotor structure, and a second hub head, wherein the first hub head and the second hub head have the same structure and are mirror-imaged relative to the rotor structure;

[0006] A plurality of fixed guide vanes are respectively arranged on the first hub head and the second hub head;

[0007] The rotor structure comprises a rotor ring and a moving blade group fixed on the outer wall of the rotor ring;

[0008] A buffer gap is left between the fixed guide vane and the moving blade group, and a buffer blade is also arranged in the buffer gap.

[0009] In a feasible embodiment, the first hub head and the second hub head include: a spherical head, the outer end of the spherical head is hemispherical or semi-ellipsoidal, an annular surface is provided on the side wall of one end of the spherical head close to the rotor structure, and a plurality of fixed guide blades are fixedly arranged on the annular surface at equal intervals along the circumferential direction.

[0010] In a feasible implementation manner, the fixed guide blades and the buffer blades located on the same first hub head or the same second hub head are arranged alternately.

[0011] In a feasible embodiment, the buffer blade and the fixed guide blade are both inclined arc-shaped structure blades, wherein when the turbine cross section is aligned with the airflow inlet and outlet direction, the cross-sectional inclination of the buffer blade is greater than the cross-sectional inclination of the fixed guide blade.

[0012] In a feasible implementation, the fixed guide vanes are capable of cutting the airflow guided by the buffer vanes in the same working group.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the impact turbine of the oscillating water column wave energy power generation device ensures the stability of fluid flow and the efficient conversion of mechanical properties. The staggered arrangement of the fixed guide blades and the buffer blades optimizes the fluid dynamic conditions, reduces energy loss, and improves energy conversion efficiency. In particular, the inclined arc structure of the buffer blades, in conjunction with the fixed guide blades, can precisely control the flow rate and direction of the airflow, so that the airflow hits the moving blade group in the best state. In the process of the gas flowing downstream, the degree to which the gas will positively hit the downstream guide blades is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 This is a front view structural schematic diagram of the utility model;

[0016] Figure 3 for Figure 2 A schematic cross-sectional structure diagram of ;

[0017] Figure 4 It is a side structural schematic diagram of the first hub head in the utility model.

[0018] In the figure: 1. first hub head, 2. rotor structure, 3. second hub head, 11. spherical head, 12. annular surface, 13. fixed guide vane, 14. buffer gap, 15. buffer blade, 21. rotor structure, 22. moving blade group. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figures 1 to 4 The utility model provides a technical solution: an impact turbine of an oscillating water column wave energy power generation device, comprising: a first hub head, a rotor structure, and a second hub head, wherein the first hub head and the second hub head have the same structure and are mirror-imaged relative to the rotor structure; a plurality of fixed guide blades are respectively arranged on the first hub head and the second hub head; the rotor structure comprises a rotor ring and a moving blade group fixed on the outer wall of the rotor ring; wherein a buffer gap is left between the fixed guide blade and the moving blade group, and a buffer blade is also arranged in the buffer gap.

[0021] The present application provides an impulse turbine of an oscillating water column wave energy power generation device, which can be used in a wave energy conversion device. Specifically, the device includes a first hub head and a second hub head: the same structure and mirror image setting are helpful to achieve the symmetry of the device, so that the mechanical properties of wave energy in two directions during the conversion process are more stable and efficient. The first hub head and the second hub head serve as the main bearing structures of the device, providing support for the stable operation of the fixed guide blades and the rotor structure. The fixed guide blades are arranged on the first hub head and the second hub head, and their function is to guide the flowing gas (or water) to pass through the rotor structure in a specific direction, and to precisely control the flow of gas. direction, which can optimize the effect of gas on the rotor blades, thereby improving the efficiency of energy conversion. The rotor structure includes a rotor ring and a moving blade group fixed on the outer wall of the rotor ring. The rotor ring and the moving blade group together constitute the conversion component of the turbine, which generates rotation by capturing and converting the kinetic energy generated by the flow of gas (or water), thereby driving the generator to generate electricity. The buffer gap is located between the fixed guide vanes and the moving blade group, and buffer blades are also arranged inside. This arrangement reduces fluid power losses while ensuring the efficiency of fluid power transmission. The setting of the buffer blades can smooth the flow of fluid to a certain extent and reduce the energy loss caused by fluid turbulence or unstable flow.

[0022] In some examples, further, the first hub head and the second hub head include: a spherical head, the outer end of the spherical head is hemispherical or semi-ellipsoidal, an annular surface is provided on the side wall of one end of the spherical head close to the rotor structure, and a plurality of fixed guide blades are fixedly arranged on the annular surface at equal intervals along the circumferential direction.

[0023] In this example, the spherical head is a part of the first hub head and the second hub head, located at the top of the hub, and is designed to be hemispherical or semi-ellipsoidal. This shape is set to reduce fluid dynamic resistance so that the airflow or water flow passing through this part can pass more smoothly and reduce energy loss. The annular surface is used to fix and support the fixed guide blade group to ensure that the fixed guide blades can work stably in the predetermined position, and each guide blade can evenly contact the flowing airflow or water flow, thereby converting energy evenly. The function of the fixed guide blades is to guide the fluid (such as water or gas) to flow in a specific manner, optimize the impact of the fluid on the rotor structure, and thus improve the energy conversion efficiency.

[0024] In some examples, further, the fixed guide blades and the buffer blades on the same first hub head or the same second hub head are arranged alternately. Specifically, the fixed guide blades are mainly responsible for guiding the fluid to flow in a direction that is more conducive to energy conversion, while the buffer blades are used to adjust the speed and pressure of the fluid flow to reduce energy loss. By staggering these two types of blades on the same hub head, fine control of fluid flow can be achieved, and fluid dynamic conditions can be optimized, thereby achieving the purpose of reducing fluid power loss and improving power generation efficiency.

[0025] In some examples, further, the buffer blade and the fixed guide blade are both inclined arc-shaped structure blades, and the fixed guide blade can cut the airflow guided by the buffer blade in the same working group;

[0026] Specifically, the cross-sectional inclination of the buffer blade is greater than that of the fixed guide blade, and the buffer blade is more inclined relative to the flow direction. This differentiated inclination design allows the buffer blade to make preliminary adjustments to the flow velocity and direction before the airflow enters the rotor structure, while the fixed guide blade further refines this adjustment to ensure that the airflow hits the moving blade group at the optimal angle and speed. This improvement disperses the airflow load, reduces the energy required for flow deflection, ensures that the airflow enters the moving blade group in the most optimized state, and ultimately achieves the purpose of improving power generation efficiency and device stability.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oscillating water column wave energy power generation device impulse turbine, characterized in that: include: A first hub head (1), a rotor structure (2), and a second hub head (3), wherein the first hub head (1) and the second hub head (3) have the same structure and are arranged in a mirror image relative to the rotor structure (2); A plurality of fixed guide vanes (13) are respectively arranged on the first hub head (1) and the second hub head (3); The rotor structure (2) comprises a rotor ring (21) and a moving blade group (22) fixed on the outer wall of the rotor ring (21); A buffer gap (14) is left between the fixed guide blade (13) and the moving blade group (22), and a buffer blade (15) is also arranged in the buffer gap (14).

2. The impulse turbine of an oscillating water column wave energy power generation device according to claim 1, characterized in that: The first hub head (1) and the second hub head (3) comprise: A spherical head (11), the outer end of the spherical head (11) is hemispherical or hemispherical, an annular surface (12) is provided on the side wall of one end of the spherical head (11) close to the rotor structure (2), and a plurality of fixed guide blades (13) are fixedly arranged on the annular surface (12) at equal intervals along the circumferential direction.

3. The impulse turbine of an oscillating water column wave energy power generation device according to claim 1, characterized in that: The fixed guide blades (13) and the buffer blades (15) located on the same first hub head (1) or the same second hub head (3) are arranged alternately.

4. The impulse turbine of an oscillating water column wave energy power generation device according to claim 3, characterized in that: The buffer blade (15) and the fixed guide blade (13) are both inclined arc-shaped structure blades, wherein when the turbine cross section is aligned with the airflow inlet and outlet direction, the cross-sectional inclination of the buffer blade (15) is greater than the cross-sectional inclination of the fixed guide blade (13).

5. The impulse turbine of an oscillating water column wave energy power generation device according to claim 3, characterized in that: The fixed guide blades (13) are capable of cutting the airflow guided by the buffer blades (15) in the same working group.

Images