CN204900140U - Hydraulic turbine inhalant canal - Google Patents

Abstract

The utility model discloses a water inlet channel of a water turbine, which comprises a water inlet section, a working section and a drainage section. The bottom of the water inlet section is connected to the working section, and the bottom of the working section is connected to the drainage section. The guide strips on the inner wall of the water inlet section and the working section, and the inside of the drainage section are equipped with a cabin, the top of the cabin is connected to the water wheel shaft, the top of the water wheel shaft is connected to the water wheel, and the water wheel is placed inside the working section. Compared with the prior art, the utility model has the advantages that the structure is simple, the installation is convenient, the engineering quantity for refitting the traditional equipment is small, the deflector can accelerate the water flow speed, and improve the working efficiency of the water turbine.

Description

Water inlet channel of a water turbine

technical field

The utility model relates to the field of water turbine equipment, in particular to a water inlet channel of a water turbine.

Background technique

A water turbine is a power machine that converts the energy of water flow into rotational mechanical energy, and it belongs to the turbomachinery in fluid machinery. As early as around 100 BC, the prototype of the water turbine appeared in China - the water wheel, which was used to lift irrigation and drive grain processing equipment. Most modern water turbines are installed in hydropower stations to drive generators to generate electricity. In a hydropower station, the water in the upstream reservoir is led to the turbine through the diversion pipe, which drives the turbine runner to rotate and drives the generator to generate electricity. The water that has done work is discharged downstream through the tail water pipe. The higher the water head and the greater the flow, the greater the output power of the turbine.

Water turbines and auxiliary machines are important hydropower equipment and an indispensable part of the hydropower industry. They are important equipment for making full use of clean and renewable energy to achieve energy conservation, emission reduction, and environmental pollution reduction. Their technological development is comparable to the development scale of my country's hydropower industry. adapt. Under the strong pull of my country's electricity demand, my country's water turbine and auxiliary equipment manufacturing industry has entered a period of rapid development, its economic scale and technical level have been significantly improved, and my country's water turbine manufacturing technology has reached the world's advanced level.

When the water flow of the early impact turbine impacts the blades, the kinetic energy loss is very large, and the efficiency is not high. In 1889, the American engineer Pelton invented the bucket turbine, which has a streamlined shrinking nozzle, which can efficiently convert the energy of water flow into the kinetic energy of high-speed jet. The best of water turbines (this entire paragraph can be omitted, 80% of the above paragraphs are outdated and replaced. It is very old information and has little reference value, so it is recommended to remove this paragraph) In the early 1980s, The bucket turbine with the largest single-unit power in the world is installed in Norway's Syd-Simma Power Station. Its single-unit capacity is 315 MW, the water head is 885 meters, and the speed is 300 rpm. It was put into operation in 1980. The bucket turbine with the highest water head is installed in the Reisserkberg Hydropower Station in Austria. Its stand-alone power is 22.8 megawatts, the speed is 750 rpm, and the water head is 1763.5 meters. It was put into operation in 1959.

According to the working principle, water turbines can be divided into two categories: impact turbines and impact turbines. The runner of the impact turbine is impacted by the water flow and rotates, and the pressure of the water flow remains unchanged during the working process, mainly due to the conversion of kinetic energy; the runner of the impact turbine is rotated by the reaction force of the water flow, and the pressure of the water flow during the working process Both energy and kinetic energy are changed, but mainly the conversion of pressure energy.

At present, the axial flow turbine is widely used. The water inlet channel of the axial flow turbine is related to the working efficiency of the turbine. The traditional immersion channel has no acceleration effect on the water flow, and the working efficiency of the turbine is not high during the working process.

To sum up, in view of the defects of the prior art, there is a special need for a water turbine inlet channel, so as to solve the above-mentioned problems.

Utility model content

In order to solve the problems of the prior art, the utility model provides a water turbine inlet channel.

In order to solve the problems of the technologies described above, a technical solution adopted by the utility model is:

In a preferred embodiment of the present utility model, the water turbine inlet channel includes a water inlet section, a working section and a drainage section, the bottom of the water inlet section is connected to the working section, and the bottom of the working section is connected to the drainage section, The water inlet section and the working section are connected to be provided with deflectors fixedly connected to the inner wall of the water inlet section and the working section, and the inside of the drainage section is provided with an engine room, the top of the engine room is connected to the shaft of the water wheel, and the top of the shaft of the water wheel is connected to the water wheel. The water wheel is placed inside the working section.

In a preferred embodiment of the present invention, the water inlet section is provided with a water inlet regulating valve, and the water inlet regulating valve is provided with a controller.

In a preferred embodiment of the utility model, the deflector is a spiral structure.

Compared with the prior art, the utility model has the advantages that the structure is simple, the installation is convenient, the engineering quantity for refitting the traditional equipment is small, the deflector can accelerate the water flow speed, and improve the working efficiency of the water turbine.

Description of drawings

Fig. 1 is the structural representation of the utility model;

The reference marks are

1. Water inlet section;

2. Working section;

3. Drainage section;

4. Engine room;

5. Water wheel shaft;

6. Water wheel;

7. Deflector;

8. Water inlet regulating valve;

9. Controller.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific illustrations.

As shown in Figure 1, a water turbine inlet channel described in the utility model includes

According to a preferred solution of the present utility model, the water inlet channel of the water turbine includes a water inlet section, a working section and a drainage section, the bottom of the water inlet section is connected to the working section, and the bottom of the working section is connected to the drainage section. The water inlet section and the working section are connected to a deflector that is fixedly connected to the inner wall of the water inlet section and the working section. The drainage section is provided with a cabin, the top of the cabin is connected to the water wheel shaft, and the top of the water wheel shaft is connected to the water wheel. The water wheel is placed inside the working section.

According to a preferred solution of the present utility model, the water inlet section is provided with a water inlet regulating valve, and the water inlet regulating valve is provided with a controller.

According to a preferred solution of the present utility model, the deflector is a spiral structure.

So as to achieve the effect of improving the working efficiency of the water turbine. The utility model has a simple and novel structure, is a new technical solution, and is convenient for popularization and use.

The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process conversion made by using the utility model specification and accompanying drawings, or directly or indirectly used in other Related technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (3)

1. A water turbine water inlet passage, comprising a water inlet section, a working section and a drainage section, is characterized in that, the bottom of the water inlet section 1 is connected to the working section, and the bottom of the working section is connected to the drainage section, and the water inlet section and The working section is connected to a deflector that is fixedly connected to the water inlet section and the inner wall of the working section. The drainage section is provided with a cabin, the top of the cabin is connected to the water wheel shaft, and the top of the water wheel shaft is connected to the water wheel. The water wheel placed inside the working section. 2 . The water inlet channel of a water turbine according to claim 1 , wherein a water inlet regulating valve is provided on the water inlet section, and a controller is provided on the water inlet regulating valve. 3 . 3. The water inlet channel of a water turbine according to claim 1, wherein the deflector is a spiral structure.