CN105804929B - Bottom-sitting type tidal generation water turbine - Google Patents

Abstract

The bottom-mounted tidal current power generating turbine of the present invention comprises a first impeller assembly, a first gear commutator, a first speed increaser, a generator, a second speed increaser, and a second gear changer which are sequentially connected. The commutator and the second impeller assembly, a brake device is provided between the first speed increaser and the generator, the first gear commutator, the first speed increaser, the brake device, the generator, the second speed increaser, The second gear commutator is arranged in the protective cover. The superior effect of the bottom-mounted tidal current power generating turbine of the present invention is that: the gear commutator is driven by the impeller assembly, the speed increaser is used to increase the speed of the main shaft of the impeller assembly transmitted by the gear commutator, and the generator converts the kinetic energy of the impeller assembly into electrical energy , by arranging the first impeller assembly and the second impeller assembly, the forward and reverse water flow can drive the generator to generate electricity and improve the power generation efficiency; by arranging the protective cover, it can resist the attack of typhoon and improve the stability of the generating turbine.

Description

Bottom-sitting tidal current generation turbine

technical field

The invention belongs to the technical field of generators, and in particular relates to a bottom-sitting type tidal current generating water turbine.

Background technique

Sustainable development and environmental protection have always been the common issues of global economic development. Due to the effectiveness of fossil energy and the threat to the human living environment, people have to strengthen the effective development and utilization of renewable resources, and the ocean tide is a clean Non-polluting and abundant reserves of renewable new energy, the use of tidal current energy to generate electricity has always been favored by various countries.

In shallow seas, straits, bays or estuaries, high tides and low tides will cause strong currents and high water flow speeds. The kinetic energy of the tidal currents can be directly used to drive hydro turbines to generate electricity, which is called tidal current generators. Most of the existing tidal current generators adopt the form of a single rotor, which makes it easy to generate lateral force when the tidal current generator rotates, which is not conducive to the stability of the generator. In addition, the flow rate of the water flow is unstable, resulting in low power generation efficiency of the generator.

Contents of the invention

The technical problem to be solved by the present invention is to provide a bottom-mounted tidal current power generation turbine to solve the technical problems of poor stability and low power generation efficiency of the power generation turbine in the prior art.

In order to solve the above technical problems, the technical scheme that the present invention takes is:

A bottom-mounted tidal current generation hydro turbine, which includes a first impeller assembly, a first gear commutator, a first speed increaser, a generator, a second speed increaser, a second A gear commutator and a second impeller assembly, a braking device is provided between the first speed increaser and the generator, the first gear commutator, the first speed increaser, the brake device, the generator The machine, the second speed increasing machine and the second gear commutator are arranged in the protective cover.

Preferably, the first gear commutator is connected to the first impeller assembly through a first connection assembly, and the first connection assembly includes a first bearing seat, a first spoke connection seat, a first blade shaft connected in sequence . A second spoke connecting seat and a second bearing seat, the first bearing seat is connected to the longitudinal axis of the first gear commutator, and the second bearing seat is connected to the first impeller assembly.

Preferably, the second gear commutator is connected to the second impeller assembly through a second connection assembly, and the second connection assembly includes a third bearing seat, a third spoke connection seat, a second blade shaft connected in sequence . A fourth spoke connecting seat and a fourth bearing seat, the third bearing seat is connected to the longitudinal axis of the second gear commutator, and the fourth bearing seat is connected to the second impeller assembly.

Preferably, the bottom-mounted tidal current generating turbine further includes a box body, the protective cover is arranged on the box body, and the first connection assembly and the second connection assembly are arranged in the box body.

After the above technical solution is adopted, the gear commutator is driven by the impeller assembly, and the speed increaser is used to increase the speed of the main shaft of the impeller assembly transmitted by the gear commutator, and the generator converts the kinetic energy of the impeller assembly into electrical energy. By setting the first impeller The component and the second impeller component can drive the generator to generate electricity in both forward and reverse directions, and improve the efficiency of power generation. By setting the protective cover, it can resist the attack of typhoon and improve the stability of the hydro turbine for power generation.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are For some embodiments of the present invention, those skilled in the art can also obtain other drawings based on these drawings without creative effort.

Fig. 1 is a structural representation of a bottom-mounted tidal current generating turbine of the present invention;

Fig. 2 is a top view of a bottom-mounted tidal current generating turbine according to the present invention.

Among them, 1—first gear commutator; 2—first speed increaser; 3—braking device; 4—generator; 5—second speed increaser; 6—second gear commutator; 7—protection Cover; 8—the first connecting assembly; 81—the first bearing seat; 82—the first spoke connecting seat; 83—the first blade shaft; 84—the second spoke connecting seat; 85—the second bearing seat; 9—the second Connecting assembly; 91—third bearing seat; 92—third spoke connecting seat; 93—second blade shaft; 94—fourth spoke connecting seat; 95—fourth bearing seat; 10—box; 11—coupling ; 12—interlayer; 121—reinforcing rib.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The bottom-mounted tidal flow power generating turbine of the present invention: the tidal current impacts the first impeller assembly and the second impeller assembly to drive the first blade shaft 83 and the second blade shaft 93 to rotate relative to each other, and then drives the gear commutator to rotate, and the speed increaser is used to increase the gear The rotation speed of the main shaft of the impeller assembly transmitted by the commutator converts the kinetic energy of the impeller assembly into electrical energy through the generator 4; by symmetrically setting the first impeller assembly and the second impeller assembly, both forward and reverse water flows can drive the generator 4 Power generation, the two do not affect each other, improve the power generation efficiency of the bottom-mounted tidal current power generation turbine, and it is not easy to generate lateral force; by setting the box 10 as a support carrier, and setting the protective cover 7 to protect the gear commutator, speed increaser, The structure of the braking device 3 and the generator 4 prevents the bottom-mounted tidal current generation turbine from being attacked by a typhoon, and improves the stability of the bottom-mounted tidal current generation hydroturbine.

As shown in Figures 1 and 2, a bottom-mounted tidal current generating turbine according to the present invention includes a first impeller assembly (not shown in the figure), a first gear commutator 1, a first speed increaser 2, Generator 4, the second speed increaser 5, the second gear commutator 6 and the second impeller assembly (not shown in the figure), also include protective cover 7, casing 10; The first speed increaser 2 and generator 4 is provided with a brake device 3 for hydraulic turbine braking during maintenance, the first gear commutator 1, the first speed increaser 2, the brake device 3, the generator 4, the second speed increaser 5, the second The gear commutator 6 is arranged in the protective cover 7, and the protective cover 7 is arranged on the box body 10, the structure is simple, and the disassembly and maintenance are convenient.

The first gear commutator 1 and the second gear commutator 6 are respectively provided with a horizontal axis and a vertical axis. The first gear commutator 1 is connected with the first impeller assembly through the first connecting assembly 8, and the second gear commutator The device 6 is connected with the second impeller assembly through the second connection assembly 9, and the first connection assembly 8 and the second connection assembly 9 are arranged in the box body 10; The gear 11 is connected with the generator 4, and the braking device 3 is arranged on the shaft coupling 11, preferably arranged on the shaft coupling 11 between the first speed increaser 2 and the generator 4, and the shaft coupling 11 is preferably a drum-shaped tooth coupling.

The first connection assembly 8 includes a first bearing seat 81, a first spoke connection seat 82, a first blade shaft 83, a second spoke connection seat 84, and a second bearing seat 85 connected in sequence. The first bearing seat 81 is connected to the first gear The longitudinal axis of the commutator 1 is connected, and the second bearing seat 85 is connected with the first impeller assembly. Preferably, the first bearing seat 81 is connected to the first spoke connection seat 82 through a coupling, and the second spoke connection seat 84 is connected to the second bearing seat 85 through a support shaft.

The second connecting assembly 9 includes the third bearing seat 91, the third spoke connecting seat 92, the second blade shaft 93, the fourth spoke connecting seat 94 and the fourth bearing seat 95 connected in sequence, the third bearing seat 91 and the second gear The longitudinal axis of the commutator 6 is connected, and the fourth bearing seat 95 is connected with the second impeller assembly. Preferably, the third bearing seat 91 is connected to the third spoke connection seat 92 through a coupling, and the fourth spoke connection seat 94 is connected to the fourth bearing seat 95 through a support shaft.

Through the gear commutator, the impeller assembly is arranged at the lower end of the generator 4, and when the turning direction of the rotor of the generator 4 remains unchanged, it can adapt to the water flow in all directions.

The box body 10 is provided with an interlayer 12 , and the interlayer 12 is provided with reinforcing ribs 121 for fastening and supporting the interlayer 12 .

The above are only preferred embodiments of the present invention, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the technical principle of the present invention, and these improvements and modifications should also be It is regarded as the protection scope of the present invention.

Claims (2)

1. A bottom-sitting type tidal current generating turbine, characterized in that: said bottom-sitting type tidal current generating hydroturbine includes a first impeller assembly, a first gear commutator, a first speed increasing gear, a generator, a second speed increaser, the second gear commutator and the second impeller assembly, a braking device is provided between the first speed increaser and the generator, the first gear commutator, the first speed increaser , the braking device, the generator, the second speed increaser, and the second gear commutator are arranged in the protective cover, and the first gear commutator and the second gear commutator are respectively provided with a horizontal axis and a vertical axis; The first gear commutator is connected to the first impeller assembly through a first connection assembly, and the first connection assembly includes a first bearing seat, a first spoke connection seat, a first blade shaft, and a second spoke A connecting seat and a second bearing seat, the first bearing seat is connected to the longitudinal axis of the first gear commutator, the second bearing seat is connected to the first impeller assembly; the second gear commutator The device is connected to the second impeller assembly through a second connection assembly, and the second connection assembly includes a third bearing seat, a third spoke connection seat, a second blade shaft, a fourth spoke connection seat and a fourth bearing connected in sequence seat, the third bearing seat is connected to the longitudinal axis of the second gear commutator, and the fourth bearing seat is connected to the second impeller assembly; the tidal current impacts the first impeller assembly and the second impeller assembly respectively drive The first blade shaft and the second blade shaft rotate relatively, and then drive the gear commutator to rotate. 2. The bottom-mounted tidal current generation turbine according to claim 1, characterized in that: the bottom-mounted tidal current generation hydroturbine also includes a box body, the protective cover is arranged on the box body, and the first connection The components and the second connection component are arranged in the box.