Dam opening flow increasing vortex tube

Abstract

The utility model discloses a vortex tube for increasing flow at a dam opening, which relates to the field of increasing flow at a dam and increasing flow at a hydroelectric generator, and comprises a vortex tube main body, vortex holes, a fixing plate with holes, a flow guide plate and screw holes which are combined together in a specific mode, so that water flow can form a vortex inside the vortex tube. The flow of water flow is increased in a vortex motion mode, so that the drainage efficiency of the dam is improved, or the water flow of the hydroelectric generator is increased, and no extra energy is consumed.

Description

Technical Field

[0001] The present invention relates to a method for increasing the discharge capacity of a dam, and in particular to increasing the water flow of a hydroelectric generator. Background Art

[0002] In current hydroelectric generators, the generator is usually installed in the dam body, and then a channel is opened to connect the upstream and downstream of the dam. When the dam is opened to release water, the potential energy of the water will be converted into kinetic energy, and the water flow will act on the turbine, which will then enable the hydroelectric generator to generate electricity.

[0003] The power generation of this generator is obviously related to the flow of water. When more water flows through the above channel per unit time, the turbine speed will become faster, and the power generation will be greater. At the same time, when the dam or reservoir discharges floodwater in the rainy season, the faster the water can be discharged to the downstream, the more it can reduce the pressure on the dam body, which is also good for the dam discharge.

[0004] In order to achieve the above-mentioned beneficial effects, the vortex tube for increasing flow at the dam mouth of the utility model only adds a special pipe at the dam mouth, which can generate a vortex when working. The natural phenomenon of vortex can increase the flow rate, increase the power generation of the generator and increase the upstream discharge of the dam without increasing the consumption of energy. Summary of the invention

[0005] In order to overcome the above problems, the purpose of the utility model is to provide a vortex tube for increasing the flow rate at the dam mouth. When working, water flows through the vortex tube and a vortex is formed. Since the closer to the center of the vortex, the faster the flow rate of the water will be, which is determined by the conservation of angular momentum, the pressure at the center of the vortex will become very low, and a suction force will be formed at the center of the vortex, so that the channel will have more flow, and the flow rate passing through will be several times or even dozens of times that of the general flow mode.

[0006] In order to generate a vortex in the vortex tube, the principle of the utility model needs to cite a mathematical formula of the invention with patent number 202110273251.7 and the name of the invention "Electromagnetic Fluid Vortex Power Device":

[0007]

[0008] in, is the speed, F x 、F y 、F z , p x 、p y 、p z The net force on the particle is and momentum Components on the x, y, and z axes.

[0009] To achieve the above object, the technical solution of the present utility model is as follows:

[0010] The vortex tube body 1 is a circular pipe-shaped shell with a narrowed channel in the middle and a perforated fixing plate 3 at the outlet, and the screw holes 5 are opened on the perforated fixing plate 3.

[0011] The vortex holes 2 are opened on the narrowed channel of the vortex tube body 1, connecting the inside and outside of the vortex tube body 1. Two flow guiding plates 4 are opened on the outside of the vortex tube body 1 and sandwich the vortex holes 2 in the middle.

[0012] To form a vortex in the said vortex tube, the direction of the water flow is very important. Taking the virtual central axis of the vortex tube body 1 as the axial direction and the direction perpendicular to the axial direction as the radial direction, there are many radial directions. The direction of the water flow should not directly align with the central axis but deviate from the central axis and form a circumfluence around the central axis as a whole. Therefore, the two flow guiding plates 4 should be biased towards the same side in the radial direction. At the end close to the vortex tube 2 body, the distance between the two flow guiding plates 4 is relatively small, and at the other end, the distance is relatively large, which can ensure that the water flow enters the inside from the outside of the vortex tube body 1 through the vortex holes 2, and the direction of the water flow will also form a circumfluence around the central axis.

[0013] During the process of forming a vortex in the said vortex tube, the water flow will be acted on by a force, and at the same time, the water flow will also exert a reaction force on the said vortex tube, which will drive the said vortex tube to rotate. Therefore, the perforated fixing plate 3 is used to fix on the water inlet of the dam, and the said vortex tube will not rotate.

[0014] The advantages of the present utility model are: The said vortex tube will form a vortex during operation, and the water flow flows in the form of a vortex, and the flow rate is several times to dozens of times that of the general flow mode, which can greatly increase the power generation, improve the flood discharge efficiency of the dam at the same time, and will not additionally increase the energy consumption. Description of the Drawings

[0015] Figure 1 It is a sectional view of the axial direction of the vortex tube body of the present utility model.

[0016] Figure 2 It is an A-A sectional view of the layout of the vortex holes and the flow guiding plates of the present utility model.

[0017] In the figure, 1, vortex tube body; 2, vortex hole; 3, perforated fixing plate; 4, flow guiding plate; 5, screw hole. Detailed Embodiment

[0018] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the protection scope of the present utility model.

[0019] Please refer to Figure 1 and Figure 2 The vortex tube for increasing the flow rate at the dam opening of the present utility model is composed of five structures: a vortex tube main body 1, a vortex hole 2, a perforated fixing plate 3, a guide plate 4, and a screw hole 5. The vortex tube main body 1 is a circular pipe-shaped shell with a narrowed channel in the middle. There is a perforated fixing plate 3 at the outlet, and the screw hole 5 is opened on the perforated fixing plate 3; the vortex hole 2 is opened on the narrowed channel of the vortex tube main body 1, connecting the inside and outside of the vortex tube main body 1. Two guide plates 4 are opened on the outside of the vortex tube main body 1 and sandwich the vortex hole 2 in the middle; the two guide plates 4 are biased towards the same side in the radial direction. At the end close to the vortex tube main body 1, the distance between the two guide plates 4 is relatively small, and the distance at the other end is relatively large.

[0020] In this embodiment, first install the vortex tube at the position of the dam opening, and pass a screw through the screw hole 5 to fix the entire vortex tube; then open the gate of the dam channel. Under the action of gravity, the water upstream of the dam begins to flow downstream. When the water flow passes through the narrowed channel, the flow rate will increase and the pressure will decrease. However, the water pressure corresponding to the outside of the vortex hole 2 does not change much, and a pressure gradient from the outside to the inside will be formed by the water pressure, and the water flow will also flow into the interior of the vortex tube through the vortex hole 2; through the guiding action of the guide plate 4, the direction of the water flow will be changed, and overall it will form a circulation around the central axis of the vortex tube, and finally a vortex will be formed. The vortex can increase the water flow through, achieving the purpose of the present utility model.

[0021] Other preferred embodiments are that the vortex tube can be installed according to different application scenarios. Some hydraulic generators may not necessarily be installed inside the dam body of the dam, and may also be installed in different places such as ships. As long as it can be used to increase the flow rate of the generator, the vortex tube is also applicable.

[0022] For other specific embodiments of the vortex tube for increasing the flow rate at the dam opening of the present utility model, in order to meet different usage requirements, the shape and size of the vortex tube main body can be adaptively changed, and the size, shape, quantity, and position of the vortex holes can also be correspondingly changed. The quantity, position, size, and shape of the corresponding guide plates can also be correspondingly changed. The shape, size, and quantity of the perforated fixing plate and the screw hole can also be changed according to requirements.

[0023] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and replacements can be made. These improvements and replacements should also be regarded as the protection scope of the present utility model.

Claims

1. A vortex tube for increasing the flow rate at a dam mouth, comprising a vortex tube body, a vortex hole, a fixed plate with holes, a guide plate and screw holes, characterized in that: The vortex tube body (1) is a tubular shell with a narrowed channel in the middle; a vortex hole (2) is provided on the narrowed channel of the vortex tube body (1) to connect the inside and outside of the vortex tube body (1); two guide plates (4) are arranged outside the vortex tube body (1) and sandwich the vortex hole (2) in the middle; the two guide plates (4) are biased to the same radial side and close to one end of the vortex tube body (1), the distance between the two guide plates is small, and the distance between the other end is large; when working, a vortex is formed inside the vortex tube body (1).

2. The vortex tube according to claim 1, characterized in that: A fixing plate (3) with a hole is arranged on the outer edge of the outlet of the vortex tube body (1); screw holes (5) are also opened on the fixing plate (3) with a hole.

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