CN218151232U - Low water level pumped storage generator - Google Patents

Abstract

The utility model discloses a low water level pumped storage generator, relate to rivers energy conversion and be mechanical energy's power device technical field, including first casing and second casing, the inside of first casing is provided with first water turbine shaft, first water turbine shaft is close to the first turbine blade of the outside fixedly connected with of the one end of first casing, and the one end fixedly connected with second water turbine shaft of first water turbine shaft, the one end of second water turbine shaft sets up in the inside of second casing, and the inside of the one end of second water turbine shaft that is close to the second casing is provided with the turbine pivot, the turbine pivot sets up on the inner wall of second casing, the outside fixedly connected with second turbine blade of second water turbine shaft near the one end of turbine pivot, the inside intercommunication of first casing has the pipe. The utility model discloses a, adopt two turbine generator set, the technique of low water level pumped storage for the hydraulic turbine can use in low water level district, and stable and efficient carries out the water and electricity conversion, has improved the generated energy of low water level.

Description

A low water level pumped storage generator

technical field

The utility model relates to the technical field of a power device for converting water flow energy into mechanical energy, in particular to a low water level pumped storage generator.

Background technique

During the "14th Five-Year Plan" period, my country will focus on key river basins such as the southwest region and the upper reaches of the Yellow River to develop and construct hydropower stations, anchoring the goal of more than 1.2 billion kilowatts in 2030. The National Energy Administration is studying and drafting the "14th Five-Year Plan" modern energy System planning and sector-specific energy planning, according to preliminary estimates, clean energy will account for 80% of the increase in energy consumption during the "14th Five-Year Plan" period.

At present, my country's hydropower industry is thriving, and the application of water turbines is becoming more and more extensive. Common water turbines are suitable for high water level power generation, and generate electricity through a single turbine structure, which covers a large area and has a high vertical height of water. It is necessary to adjust the rotation direction of the motor and the corresponding speed when generating and pumping water in separate periods, and the transition process is complicated, and the internal structure of the turbine is severely worn, and the service life of carbon brushes or slip rings is low. The functions of power generation and pumping need to be used in separate periods, which cannot be applied to Low water level.

Utility model content

The purpose of the utility model is to solve the defects in the prior art, and propose a low water level pumped storage generator.

In order to achieve the above object, the utility model adopts the following technical solutions:

A low-water-level pumped-storage generator, comprising a first casing and a second casing, the inside of the first casing is provided with a first water turbine shaft, and the first water turbine shaft is close to one end of the first casing The outer side is fixedly connected with a first turbine blade, and one end of the first water turbine shaft is fixedly connected with a second water turbine shaft, and one end of the second water turbine shaft is arranged inside the second casing, and the second water turbine shaft A turbine rotating shaft is arranged inside one end close to the second casing, and the turbine rotating shaft is arranged on the inner wall of the second casing.

Further, a second turbine blade is fixedly connected to the outer side of the end of the second water turbine shaft close to the turbine rotating shaft.

Further, a conduit communicates with the inside of the first housing.

Further, the bottom of the second housing communicates with the first nozzle, and the top of the second housing communicates with the second nozzle and the third nozzle.

Further, one end of the first nozzle close to the second housing is facing the center of the impeller.

Further, the turbine shaft rotates in one direction.

Compared with the prior art, the utility model has the beneficial effects of:

1. This application adopts twin-turbine generator set and low water level pumped storage technology, so that the water turbine can be applied in the low water level area, and the hydropower conversion can be carried out stably and efficiently, and the power generation at the low water level can be improved.

2. This application can be used to generate power and store energy in a small area with low water level, solve the problem that it can only be used in areas with concentrated water resources, and expand the application range of hydroelectric generators.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute a limitation to the utility model.

Fig. 1 is a schematic diagram of the overall structure of a low water level pumped storage generator proposed by the utility model;

Fig. 2 is the front view of a kind of low water level pumped storage generator proposed by the utility model;

Fig. 3 is a left view of a low water level pumped storage generator proposed by the utility model;

Fig. 4 is a cross-sectional view of a low water level pumped storage generator proposed by the utility model;

Fig. 5 is a working flow chart of a low water level pumped storage generator proposed by the utility model.

In the figure: 1, the first shell; 2, the second shell; 3, the first nozzle; 4, the first turbine shaft; 5, the second turbine shaft; 6, the first turbine blade; 7, the turbine shaft; 8. The second turbine blade; 9. The conduit; 10. The second nozzle; 11. The third nozzle.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention;

Example 1

Referring to Figures 1-4, a low water level pumped storage generator includes a first housing 1 and a second housing 2, the first housing 1 is provided with a first turbine shaft 4, the first turbine shaft 4 The outer side near one end of the first housing 1 is fixedly connected with a first turbine blade 6, and one end of the first turbine shaft 5 is fixedly connected with a second turbine shaft 5, and one end of the second turbine shaft 5 is arranged on the second housing 2 The interior of the second water turbine shaft 5 near the end of the second housing 2 is provided with a turbine shaft 7, the turbine shaft 7 is arranged on the inner wall of the second housing 2, the first water turbine shaft 4 and the second water turbine shaft 5 is a device connecting the first turbine blade 6 and the second turbine blade 8 for torque transmission.

The outside of the second water turbine shaft 5 near one end of the turbine rotating shaft 7 is fixedly connected with a second turbine blade 8, and the installation of the first turbine blade 6 is opposite to the direction of the second turbine blade 8, so that pumping and power generation are carried out simultaneously.

The inside of the first housing 1 communicates with a conduit 9 .

The bottom of the second housing 2 is communicated with the first nozzle 3, and the top of the second housing 2 is communicated with the second nozzle 10 and the third nozzle 11, the first nozzle 3 is used to extract low water level water, The second nozzle 10 and the third nozzle 11 can form a plurality of nozzles to spray water, so as to maximize the utilization of the water velocity and further increase the speed of the second turbine.

One end of the first nozzle 3 close to the second housing 2 faces the center of the impeller, so that the water flow drives the impeller to rotate when pumping water, converts the kinetic energy of the water into static pressure energy, and increases the speed of the second turbine blade 8 .

The turbine shaft 7 rotates in one direction to ensure the first turbine rotation direction.

Example 2

Referring to Fig. 5, 1-1 is the water flow entering direction of the first nozzle 3, 1-2 is the water flow output direction of the second nozzle 10 and the third nozzle 11, and 1-3 is the rotation direction of the second turbine blade 8 , 1-4 is the direction of rotation of the first turbine blade 6, and 1-5 is the direction of suction of the conduit 9;

The second housing 2 utilizes the first nozzle 3 to extract low water level water, and the water flow enters the inside of the second housing 2 from the direction of 1-1, wherein since one end of the first nozzle 3 is facing the center of the impeller of the water turbine, it can be pushed The impeller rotates to increase the rotating speed of the second turbine blade 8, and then the water flows through the passage in the second housing 2 to the second nozzle 10 and the third nozzle 11, forming a plurality of nozzles to spray water, and the water flow velocity is maximized. The rotation speed of the second turbine is further increased, and the other water flow flows out through the aqueduct; the stator and the rotor are arranged in cooperation, and the intermediate rotating shaft drives the first water turbine shaft 4 and the second water turbine shaft 5 to rotate, and is converted by the direction converter, so that The reverse rotation of the first turbine blade 6 creates a negative pressure inside the first casing 1, forming a suction force. The inside of the first turbine is connected to the conduit 9, and the suction is applied to the outside through the conduit 9; when the adsorption and power generation do not need to be carried out at the same time When the direction converter is used, the direction of the first turbine and the second turbine will be the same, and generate electricity at the same time; when the suction and power generation need to be carried out simultaneously, the direction converter will change the direction, so that the second turbine will generate electricity, and the first turbine will pump and absorb water. , work separately.

Claims (6)

1. The utility model provides a low water level pumped storage generator, includes first casing (1) and second casing (2), its characterized in that, the inside of first casing (1) is provided with first water turbine shaft (4), first water turbine shaft (4) are close to the outside fixedly connected with first turbine blade (6) of the one end of first casing (1), just the one end fixedly connected with second water turbine shaft (5) of first water turbine shaft (4), the one end of second water turbine shaft (5) sets up in the inside of second casing (2), just the inside of the one end of being close to second casing (2) of second water turbine shaft (5) is provided with turbine pivot (7), turbine pivot (7) set up on the inner wall of second casing (2).

2. A low water level pumped storage generator as claimed in claim 1, characterised in that a second turbine blade (8) is fixedly connected to the outside of the end of the second turbine shaft (5) adjacent to the turbine shaft (7).

3. A low water level pumped-storage generator according to claim 1, characterised in that the interior of the first housing (1) is connected to a conduit (9).

4. A low water level pumped-storage generator according to claim 1, characterized in that the bottom of the second housing (2) is connected to a first nozzle (3) and the top of the second housing (2) is connected to a second nozzle (10) and a third nozzle (11).

5. A low water level pumped-storage generator as claimed in claim 4, characterized in that the end of the first nozzle (3) close to the second housing (2) is directed towards the centre of the impeller.

6. A low water level pumped-storage generator according to claim 1, characterized in that the turbine shaft (7) is unidirectional in rotation.

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