CN201991678U - Water flow power generating device - Google Patents

Abstract

The utility model discloses a water flow power generation device, which is mainly designed to provide a power generation device with low start-up load and which can utilize water flow energy without constructing a dam to stop the water. The utility model includes: including at least one impeller and a generator, the impeller includes: a central shaft and at least one set of power fan blades set on the central shaft, wherein the power fan blade set includes at least three power Fan blades, each power fan blade is arranged in a diverging shape along the radial direction of the central axis; the central axis is arranged on a support device, and its power output end is connected with the generator through a transmission mechanism. The water flow power generation device of the utility model has simple structure and low start-up load, can generate electricity by using water flow energy in ordinary rivers, and has high hydraulic energy utilization rate.

Description

Hydropower device

technical field

The utility model relates to a water current generating device.

Background technique

Hydropower is widely used for its natural and pollution-free advantages. However, the existing structure of the impeller of the hydroelectric generator generally requires relatively large hydraulic kinetic energy to start generating electricity. Therefore, it is necessary to select rivers with the conditions for building dams to carry out hydroelectric power generation. For those rivers that do not have dams, the kinetic energy of their water flow cannot be fully utilized.

Utility model content

Aiming at the above problems, the utility model provides a water flow power generation device with simple structure, low start-up load, and without the need to block water and build dams, which can also utilize water kinetic energy.

In order to achieve the above purpose, the water flow power generation device of the present utility model includes at least one impeller and a generator, and the impeller includes: a central shaft and at least one set of power fan blades arranged on the central shaft, wherein the The power fan blade set includes at least three power fan blades, and each power fan blade is arranged in a divergent shape along the radial direction of the central shaft; the central shaft is arranged on a supporting device, and its power output end is connected with the generator .

Further, the axial distance between the sets of power fan blades arranged in the axial direction of the central axis is at least the axial length of one power fan blade.

Further, the set of power fan blades is uniformly arranged on the central axis.

Further, two or more impellers are arranged in sequence along the water flow direction, and the power fan blade sets on the downstream impeller and the two power fan blade sets on the upstream impeller are arranged alternately.

Further, the power fan blades in the power fan blade set are uniformly arranged on the central axis.

Further, the power fan blade set includes 4 power fan blades, and the radial angle between the power fan blades is 90 degrees.

Further, the transmission mechanism is a coupling or is composed of a pulley at the power output end of the central shaft of the impeller, a driven pulley and a belt at the input end of the generator.

The beneficial effects that the utility model has are:

1. Simple structure, convenient installation and maintenance;

2. The start-up load is low, and the hydrodynamic energy can be used to generate electricity in ordinary rivers, and the utilization rate of hydraulic energy is high.

Description of drawings

Fig. 1 is the front structural schematic diagram of the first embodiment of the utility model;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the front structural schematic diagram of the second specific embodiment of the utility model;

Fig. 4 is the top view of Fig. 3;

Fig. 5 is the right view of Fig. 3;

Fig. 6 is a schematic structural diagram of a third specific embodiment of the present invention.

Detailed ways

The specific embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings.

Example 1

As shown in Figures 1 and 2, the water flow power generation device described in the utility model includes an impeller 1 and a generator 2, wherein:

The impeller 1 includes: a central shaft 101 and a set of power fan blades 102 arranged on the central shaft; the power fan blade set 102 includes three power fan blades 1021, and each power fan blade 1021 is arranged along the center The radial direction of the shaft 101 is arranged in a diverging shape; as a preferred solution of this embodiment, the power fan blades 1021 in the power fan blade set are evenly arranged on the central axis 101, and each power fan blade 1021 is arranged radially The included angle is 120 degrees;

The central shaft 101 is arranged on a supporting device 3, and its power output end is connected with the generator 2 through a transmission mechanism. The transmission mechanism in this embodiment 1 is a coupling 4, which is connected to the central shaft 101 the power output of the generator and the power input of the generator. As shown in the figure, when the water flow power generation device described in this embodiment is actually applied, the central axis should be higher than the water surface.

Example 2

As shown in Fig. 3 to Fig. 5, the hydroelectric generating device described in the utility model includes three impellers 11, 12, 13 and a generator 2, wherein:

The first impellers 11 and 13 include: a central shaft 101 and three sets of power fan blades 102 arranged on the central shaft; the first impeller 12 includes: a central shaft 101 and two sets of The power fan blade set 102 on the central axis; the power fan blade set 102 includes four power fan blades 1021, and each power fan blade 1021 is arranged in a divergent shape along the radial direction of the central axis 101;

The central shaft 101 of each impeller is arranged on a supporting device 3, and its power output end is connected with the generator 2 through a transmission mechanism. An end pulley 5, a driven pulley 6 arranged at the input end of the generator 2, and a belt 7 constitute.

Wherein, the axial distance between the sets of power fan blades arranged in the axial direction of the central axis 101 is at least the axial length of one power fan blade 102 .

As a further preferred solution of this embodiment, the power fan blade set 102 is uniformly arranged on the central axis 101; the power fan blade set includes 4 power fan blades, and the radial distance between each power fan blade The included angle is 90 degrees.

In order to make better use of the power of the water flow to generate electricity, two or more impellers 1 are arranged in sequence along the direction of the water flow, and the power fan blades on the downstream impeller and the two power fan blades on the upstream impeller are arranged alternately. As shown in Figure 3, in this embodiment, the power fan blade groups of three impellers 11, 12 and 13 are arranged alternately, that is, the two power fan blade groups on the impeller 12 correspond to the first and second groups of the impeller 11 respectively. Between and between the second and the third group; impeller 12 and 13 are the same.

Example 3

The structure of the water flow power generation device described in the utility model can also be used in the existing water trucks installed on the river later, that is, the circumferential direction of the existing water trucks 8 is set along the radial direction of the water trucks. Several power fan blades 1021, as shown in Figure 6, can not only improve the water lifting capacity of existing water trucks, but also can be used for power generation.

In addition, attention should be paid to the design and use of the utility model: the water level of rivers and lakes will change due to seasonal changes, especially in the flood season, which may affect the use of the water flow power generation device, or even be damaged. Therefore, at the time of design, according to the local water level change, the central axis of the impeller is installed above the highest water level of the river or lake, which can not only prevent floods, but also increase the torque due to the lengthening of the fan blades. In addition, in order to prevent floods, there must be spillways next to the large units to reduce emissions.

The water flow generating device shown in the utility model can be developed and designed to build large, medium and small generating sets according to the water flow velocity and flow rate of specific rivers.

The above are only preferred embodiments of the present utility model, but the scope of protection of the present utility model is not limited thereto. Any skilled person familiar with the art within the technical scope disclosed by the utility model can easily think of changes or Replacement should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be determined by the protection scope defined in the claims.

Claims (7)

1. A water flow power generation device, comprising at least one impeller and a generator, characterized in that the impeller comprises: a central shaft and at least one set of power fan blades arranged on the central shaft, wherein the power fan The blade group includes at least three power fan blades, and each power fan blade is arranged in a divergent shape along the radial direction of the central axis; the central axis is arranged on a supporting device, and its power output end is connected to the generator through a transmission mechanism connected. 2 . The water flow power generation device according to claim 1 , wherein the axial distance between the sets of power fan blades arranged in the axial direction of the central axis is at least the axial length of one of the power fan blades. 3 . 3. The water flow power generation device according to claim 2, wherein the power fan blades are evenly distributed on the central axis. 4. According to claim 1 or 2 or 3 described hydropower generation device, it is characterized in that two or more impellers are arranged in sequence along the direction of water flow, and the power fan blade group on the downstream impeller and the two power fans of the upstream impeller Leaf groups staggered set. 5 . The water flow power generation device according to claim 1 , wherein the power fan blades in the power fan blade set are uniformly arranged on the central axis. 6 . 6 . The water flow power generation device according to claim 1 , wherein the power fan blade set includes 4 power fan blades, and the included angle between the radial directions of the power fan blades is 90 degrees. 7 . 7. The water flow power generation device according to claim 1, wherein the transmission mechanism is a coupling or a pulley at the power output end arranged on the central axis of the impeller, a driven pulley arranged at the input end of the generator and Belt composition.

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