CN114251215A - Combined power generation system based on pumped storage - Google Patents

Abstract

Translated fromChinese

本发明公开了一种基于抽水蓄能的复合发电系统，涉及发电系统的技术领域，旨在针对人工产生水的重力势能并利用该能量发电的发电系统，提高其发电效率。本发明包括上水库；下水库；储水箱，储水箱的顶部通过注水管连接上水库，储水箱的底部通过回水管连接下水库；储水箱内部设置有两个独立的腔室；回水管为带有分叉的Y型管道，其分叉的两个支路分别与两个腔室连通，其汇总的主路连接到下水库；阀门，设置于回水管上的支路；水轮机，设置于回水管上的主路，水轮机的输出端连接第二发电机的转轴；主轴，回转设置于储水箱的顶部，主轴上设置有链轮；主轴通过增速机连接第一发电机，浮箱，设置于腔室内，浮箱通过链条与链轮连接。

The invention discloses a composite power generation system based on pumped water storage, relates to the technical field of power generation systems, and aims to improve the power generation efficiency of a power generation system that artificially generates gravitational potential energy of water and utilizes the energy to generate electricity. The invention includes an upper reservoir; a lower reservoir; a water storage tank, the top of the water storage tank is connected to the upper reservoir through a water injection pipe, and the bottom of the water storage tank is connected to the lower reservoir through a water return pipe; two independent chambers are arranged inside the water storage tank; There is a bifurcated Y-shaped pipeline, the two branches of which are connected to the two chambers respectively, and the main road that is collected is connected to the lower reservoir; the valve is set on the branch on the return pipe; the turbine is set on the return pipe. The main road on the water pipe, the output end of the water turbine is connected to the rotating shaft of the second generator; the main shaft is rotatably arranged on the top of the water storage tank, and the main shaft is provided with a sprocket; Inside the chamber, the pontoon is connected to the sprocket by a chain.

Description

Composite power generation system based on water pumping and energy storage

Technical Field

The invention relates to the technical field of power generation systems, in particular to a pumped storage based composite power generation system.

Background

The sources of electrical energy have many forms, such as wind, water, heat, etc., and a variety of different structures have been derived.

In the prior art, there is a power generation system capable of storing water at a high level. The gravitational potential energy of the water is not formed naturally, but the water is artificially conveyed to a high place by doing work, and the energy is utilized when needed.

Reference is made to the prior art such as the chinese patent publication No. CN102477931A, the chinese patent publication No. CN103629039B or the chinese patent publication No. CN 113250889A.

However, in the existing pumped storage power generation technology, energy loss exists in the process of delivering water to a high position, energy loss also exists in the power generation process, the power generation efficiency is not high at present, and the power generation efficiency is urgently needed to be improved.

Disclosure of Invention

The invention provides a pumped storage based composite power generation system, which comprises an upper reservoir; a lower reservoir; a water inlet of the water pump is connected with the lower reservoir, and a water outlet of the water pump is connected with the upper reservoir; the water storage tank is positioned between the upper reservoir and the lower reservoir, the top of the water storage tank is connected with the upper reservoir through a water injection pipe, and the bottom of the water storage tank is connected with the lower reservoir through a water return pipe; two independent chambers are arranged in the water storage tank; the water return pipe is a Y-shaped pipeline with branches, two branched branches of the water return pipe are respectively communicated with the two chambers, and a main road collected by the water return pipe is connected to the lower reservoir; the valve is arranged on a branch of the water return pipe; the water turbine is arranged on the main path of the water return pipe, and the output end of the water turbine is connected with a rotating shaft of the second generator; the main shaft is rotatably arranged at the top of the water storage tank and is provided with a chain wheel; the input end of the speed increaser is connected with the main shaft, and the output end of the speed increaser is connected with a rotating shaft of the first generator; the buoyancy tank is arranged in the cavity and is connected with the chain wheel through a chain.

The beneficial technical effects of the invention are as follows:

the buoyancy tank, the main shaft driven by the descending of the buoyancy tank, the speed increaser and the first generator are introduced, so that the gravitational potential energy of the buoyancy tank can be accumulated in the process of injecting water into the water storage tank, and the gravitational potential energy is converted into electric energy in the process of descending of the buoyancy tank. Under the condition that the water pump conveys equal amount of water, the technical scheme in the example can send more electric energy, has improved the utilization efficiency of energy.

Drawings

Fig. 1 is a schematic structural diagram 1 of a water pumping and energy storage based hybrid power generation system in the invention.

Fig. 2 is a schematic structural diagram 2 of the pumped-storage based hybrid power generation system of the present invention.

Reference numerals: 1. a lower reservoir; 21. a water pump; 22. a water replenishing pipe; 3. a water storage tank; 4. a water return pipe; 5. a valve; 61. a first generator; 62. a speed increaser; 63. a main shaft; 71. a water turbine; 72. a second generator; 8. a buoyancy tank; 9. and an upper reservoir.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

The invention provides a composite power generation system based on pumped storage, which is an improvement of the existing pumped storage power generation system. The embodiment comprises an upper reservoir 9, a lower reservoir 1, awater storage tank 3, awater pump 21, awater turbine 71, afirst generator 61, a second generator 72 and amain shaft 63.

A certain amount of water is stored in the lower reservoir 1. The water inlet of thewater pump 21 is connected with the lower reservoir 1 through a pipeline, and the water outlet of thewater pump 21 is connected with the upper reservoir 9 through awater replenishing pipe 22. Thewater pump 21 in the lower reservoir 1 can be fed into the upper reservoir 9 by the operation of thewater pump 21.

Thewater storage tank 3 is positioned between the upper reservoir 9 and the lower reservoir 1, the top of thewater storage tank 3 is connected with the upper reservoir 9 through a water injection pipe, and the bottom of thewater storage tank 3 is connected with the lower reservoir 1 through a water return pipe 4. Two independent chambers are arranged inside thewater storage tank 3. Can be to the water injection respectively in two cavities through the water injection pipe, from prior art content, the water injection pipe can set up the three-way valve, also can set up pivoted tube head, and concrete scheme is many, so do not do the repeated description. The bottom of thewater storage tank 3 is provided with a water return pipe 4, and the water return pipe 4 is communicated with the top of the water storage tank. The return pipe 4 is specifically a Y-shaped pipe with a bifurcation. The two branched branches are respectively communicated with the two chambers, and the main branch which is gathered is connected to the water storage tank.

The pipeline of the water return pipe 4 is provided with avalve 5, thevalve 5 is specifically positioned on a branch of the water return pipe 4, the two branches are provided with twovalves 5, when thevalve 5 is opened, water in thewater storage tank 3 flows back to the interior of the lower reservoir 1 under the action of gravity, and the twovalves 5 are respectively used for controlling water storage in the two cavities.

Ahydraulic turbine 71 is mounted on the return pipe 4, in particular on the main path and downstream of thevalve 5, the output of thehydraulic turbine 71 being connected to the shaft of a second generator 72. During the process that the water in thewater storage tank 3 flows back to the lower reservoir 1, the kinetic energy of the water acts on thewater turbine 71, and thewater turbine 71 drives the second generator 72 to generate electricity.

Thefirst generator 61 is disposed at the same height as the top of thewater storage tank 3. The rotating shaft of thefirst generator 61 is connected with the output end of the speed increaser 62, and the input end of thespeed increaser 62 is connected with themain shaft 63. A base is arranged on the top of thewater storage tank 3, and amain shaft 63 is mounted on the base which is used for rotatably supporting themain shaft 63. When themain shaft 63 rotates, power is transmitted to thefirst generator 61 through the speed increaser 62, so that thefirst generator 61 generates power.

Themain shaft 63 is provided with two chain wheels which are respectively corresponding to the two chambers. The chain wheel is connected with a chain in a matching way. The other end of the chain is connected with abuoyancy tank 8 located in the chamber. The chain wheel is a one-way wheel, and when thebuoyancy tank 8 drives the chain to descend, the chain wheel is locked with themain shaft 63 to drive themain shaft 63 to rotate; when thebuoyancy tank 8 is lifted, the chain wheel and themain shaft 63 are in an unconstrained state and can rotate relatively. When themain shaft 63 rotates, one of thebuoyancy tanks 8 ascends and theother buoyancy tank 8 descends.

The specific implementation mode is as follows: before power generation, the water in one chamber is at a high level and the water in the other chamber is at a low level. During power generation, thevalve 5 corresponding to the high water level chamber is opened and theother valve 5 is closed. The water flow strikes theturbine 71 to generate electricity, and the following linkage actions are performed simultaneously: and water is injected into the cavity with low water level through a water injection pipe. In the process, onebuoyancy tank 8 descends to drive themain shaft 63 to rotate, so that thefirst generator 61 is driven to generate electricity, and theother buoyancy tank 8 floats upwards due to water injection, after the process is finished, the actions are circulated, thevalve 5 corresponding to the high water level chamber is opened, the other buoyancy tank is closed, the actions of descending and floating of the twobuoyancy tanks 8 are continued, and the first generator and the second generator 72 are driven to generate electricity in the process. The power generation device circularly operates in such a way, and the aim of continuously generating power is fulfilled.

Since thebuoyancy tank 8, themain shaft 63, thespeed increaser 62 and thefirst generator 61 driven by the descent of thebuoyancy tank 8 are introduced, the gravitational potential energy of thebuoyancy tank 8 can be accumulated during the process of filling water into thewater storage tank 3, and the gravitational potential energy is converted into electric energy during the process of the descent of thebuoyancy tank 8. Under the condition that thewater pump 21 delivers equal amount of water, the technical scheme in the example can generate more electric energy, and the utilization efficiency of the energy is improved.

It should be further stated that: the whole device can be selectively arranged on a support frame or arranged by depending on a mountain or a high-rise building.

While the invention has been described with reference to a preferred embodiment, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention, and particularly, features shown in the various embodiments may be combined in any suitable manner without departing from the scope of the invention. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (1)

Translated fromChinese

1.一种基于抽水蓄能的复合发电系统，其特征在于，包括：1. A composite power generation system based on pumped storage, characterized in that, comprising:上水库(9)；Upper Reservoir (9);下水库(1)；Lower Reservoir (1);水泵(21)，所述水泵(21)的进水口连接所述下水库(1)，所述水泵(21)的出水口连接所述上水库(9)；a water pump (21), the water inlet of the water pump (21) is connected to the lower reservoir (1), and the water outlet of the water pump (21) is connected to the upper reservoir (9);储水箱(3)，所述储水箱(3)位于所述上水库(9)和所述下水库(1)之间，所述储水箱(3)的顶部通过注水管连接所述上水库(9)，所述储水箱(3)的底部通过回水管(4)连接所述下水库(1)；a water storage tank (3), the water storage tank (3) is located between the upper reservoir (9) and the lower reservoir (1), and the top of the water storage tank (3) is connected to the upper reservoir (1) through a water injection pipe 9), the bottom of the water storage tank (3) is connected to the lower reservoir (1) through the return pipe (4);储水箱(3)内部设置有两个独立的腔室；Two independent chambers are arranged inside the water storage tank (3);回水管(4)为带有分叉的Y型管道，其分叉的两个支路分别与两个所述腔室连通，其汇总的主路连接到所述下水库(1)；The water return pipe (4) is a Y-shaped pipe with a bifurcation, and the two branches of the bifurcation are respectively connected with the two chambers, and the main road that is collected is connected to the lower reservoir (1);阀门(5)，设置于所述回水管(4)上的支路；a valve (5), a branch circuit arranged on the return pipe (4);水轮机(71)，设置于所述回水管(4)上的主路，所述水轮机(71)的输出端连接第二发电机(72)的转轴；a water turbine (71), which is arranged on the main road on the water return pipe (4), and the output end of the water turbine (71) is connected to the rotating shaft of the second generator (72);主轴(63)，回转设置于所述储水箱(3)的顶部，所述主轴(63)上设置有链轮；A main shaft (63) is rotatably arranged on the top of the water storage tank (3), and a sprocket is arranged on the main shaft (63);增速机，所述增速机的输入端连接所述主轴(63)，所述增速机的输出端连接第一发电机(61)的转轴；a speed increaser, the input end of the speed increaser is connected to the main shaft (63), and the output end of the speed increaser is connected to the rotating shaft of the first generator (61);浮箱(8)，设置于所述腔室内，所述浮箱(8)通过链条与所述链轮连接。A floating box (8) is arranged in the chamber, and the floating box (8) is connected with the sprocket through a chain.

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