CN213655030U

CN213655030U - Hydropower station tail water secondary power generation device

Info

Publication number: CN213655030U
Application number: CN202022597124.6U
Authority: CN
Inventors: 沈福昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-07-09
Anticipated expiration: 2030-11-11

Abstract

The utility model discloses a hydropower station tail water secondary power generation device, which comprises an impeller and a generator; the water power station tail water flows out of the front and rear branch diversion water channels to respectively drive the impellers in the front row of the power generating set and the impellers in the rear row of the power generating set to rotate, and the rotation directions of the impellers in the front row of the power generating set and the impellers in the rear row of the power generating set are opposite. The utility model discloses need not to install on the dam body, also need not that the pile foundation is fixed or the anchor is decided, can utilize the biggest drop potential energy of tail water to generate electricity.

Description

Hydropower station tail water secondary power generation device

Technical Field

The utility model relates to a power generation facility of power station especially relates to an utilize tail water of power station to carry out secondary power's device, belongs to hydroelectric power generation technical field.

Background

China is one of countries with abundant hydraulic resources in the world and is also one of countries with large installed capacity of water and electricity, numerous hydropower stations are distributed all over the country, in the existing hydropower stations, tail water discharged by a primary generator set has quite large water pressure, the flow and the water pressure are quite stable, secondary power generation is carried out on the residual tail water potential energy after the primary hydraulic power generation, and precious hydraulic resources can be fully and fully utilized.

The existing hydropower station tail water secondary power generation device, such as the Chinese utility model patent, a structure disclosed in patent No. 200520001130.3, includes that each water wheel and cross shaft are fixedly installed between every two tile seats, each tile seat is fixed on the dam body of the dam by bolts, the cross shaft and the cross shaft are connected with each other by flange discs, bevel gears fixed on the cross shaft are crossed at 90 degrees with bevel gears installed on the lower head of the transmission shaft, each pair of bevel gears are installed and fixed in bevel gear boxes, the bevel gear boxes are fixed on the dam body of the dam, the middle of the transmission shaft is supported by at least one tile seat which is fixed with the dam body of the dam by bolts, the lower head end surface of each anti-string sleeve sleeved on the transmission shaft is contacted with the upper plane of the bearing in the corresponding tile seat, the lower head end surface of each anti-string sleeve is contacted with the upper plane of the bearing in the corresponding tile seat, the middle position of each anti-string sleeve is provided with a round hole which is matched with the through pin and is arranged on the transmission shaft, the flange plate at the upper head part of each transmission shaft is connected with the flange plate at the lower head part of the generator, the base of the generator is fixed with the dam body of the dam by using bolts, the installation height of each generator is basically consistent with that of the original generator, a weather enclosure is correspondingly arranged right above each generator, and the transverse shaft of the system and the axis of the transmission shaft are approximately parallel to the surface of the dam. Although the secondary power generation device can utilize the residual tail water resource after the hydraulic turbine of the hydropower station generates electricity to carry out secondary power generation, the purpose that the original hydropower station can not fully utilize the hydraulic resource is achieved, the secondary power generation device with the structure has the following three defects in the use process: (1) because each generator base, each tile base and the bevel gear box body base are fixed on the dam body of the dam by bolts, when the generator bases are installed, more installation holes need to be drilled on the dam body, and therefore the dam body is damaged, and the safety performance of the dam body is affected; (2) the device adopts more parts, the whole equipment is huge, the structure is complex, the manufacturing, using and installing costs are high, the installation is difficult, and time and labor are wasted; (3) the water wheels are arranged on the dam body, so that the power generation can not be carried out by utilizing the maximum fall potential energy of tail water, and the power generation capacity is greatly reduced.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide one kind not only simple structure, equipment investment and working costs are cheap, need not to install on the dam body moreover, also need not the pile foundation and fix or the anchor is fixed, and can utilize the maximum fall potential energy of tailwater to generate electricity, can improve the generated energy by a wide margin, make and use low cost's power station tailwater secondary power generation device.

In order to solve the technical problem, the utility model adopts the hydropower station tail water secondary power generation device which comprises an impeller and a generator; the rotation shaft of the impeller is connected with the rotation shaft of the generator, the impeller and the generator are combined to form a generator set, the hydropower station tail water secondary power generation device further comprises a floating body and a diversion water tank arranged on the floating body, the floating body is arranged on the water surface at the bottom of the hydropower station, a front-row generator set and a rear-row generator set which are formed by arranging a plurality of generator sets are arranged on the floating body, the front-row generator set and the rear-row generator set are arranged in parallel along the length direction of the floating body, the impeller in the front-row generator set and the impeller in the rear-row generator set are symmetrically arranged in the width direction of the floating body, the diversion water tank is provided with a main diversion water tank arranged along the length direction of the floating body and a plurality of front branch diversion water tanks and a plurality of rear branch diversion water tanks which are arranged in pairs at the bottom of the main diversion water tank and are symmetrically arranged in the width direction of And when the tail water of the hydropower station flows out from the front branch diversion water tank and the rear branch diversion water tank to drive the impellers in the front row of generating sets and the impellers in the rear row of generating sets to rotate respectively, the rotating directions of the impellers in the front row of generating sets and the impellers in the rear row of generating sets are opposite.

As a preferred embodiment of the present invention, the cross section of the floating body is trapezoidal, the shell of the floating body is enclosed by the stainless steel plate, and the light foaming material is filled in the shell of the floating body.

As a preferred embodiment of the present invention, the light foaming material is polyethylene foam or polyurethane foam.

As a preferred embodiment of the present invention, the cross-sectional shape of the joint of the main water guiding groove, the front branch water guiding groove and the rear branch water guiding groove is in an inverted Y shape.

As a preferred embodiment of the present invention, the floating body is further provided with a propeller driven by a motor, and the motor is connected with an electric controller on a hydropower station or a land through a wireless signal.

As a preferred embodiment of the present invention, the floating body is further provided with a position sensor, and the position sensor is connected with an electric controller on a hydropower station or a land through a wireless signal.

In the present invention, the electric controller is preferably a PLC programmable controller or a digital controller.

After the structure is adopted, the utility model discloses following beneficial effect has:

the floating body provided with the secondary generating set is directly arranged on the water surface at the bottom of the hydropower station, so that on one hand, the height of the fall between the secondary generating set and the primary generating set at the top of the hydropower station is the largest, and the secondary generating set can generate electricity by utilizing the largest fall potential energy of tail water, thereby greatly improving the generating capacity; on the other hand, the utility model discloses a secondary generator unit need not to install on the dam body to can avoid boring the mounting hole on the dam body, effectively prevent prior art from causing the drawback that destroys and influence dam body safety to the dam body.

The utility model is provided with a front-row generating set and a rear-row generating set which are arranged in parallel on a floating body, impellers in the front-row generating set and impellers in the rear-row generating set are symmetrically arranged in the width direction of the floating body, a diversion water tank is arranged on the floating body, the diversion water tank is provided with a leading water flowing tank and a plurality of paired front branch diversion water flowing tanks and rear branch diversion water flowing tanks, the paired front branch diversion water flowing tanks and rear branch diversion water flowing tanks are respectively arranged corresponding to the impellers in the front-row generating set and the impellers in the rear-row generating set, when in work, tail water of a hydropower station firstly enters the leading diversion water flowing tank and then respectively flows out from the front branch diversion water flowing tanks and the rear branch diversion water flowing tanks, the tail water flowing out from the front branch diversion water flowing tanks and the tail water flowing out from the rear branch diversion water flowing tanks respectively drive the impellers in the front-row generating set and the impellers in the rear-row generating set, like this the body remains balanced throughout for the atress of tailwater fore-and-aft direction to make the body can not take place the back-and-forth movement on the surface of water, consequently the utility model discloses a body does not need the pile foundation fixed or the anchor is decided or adopts other modes fixed can carry out continuous power generation work, the utility model discloses secondary power generation device uses portably, uses and the running cost is low.

The utility model discloses set up the screw on the body, change when tail water intensity like this to when leading to the tail water point of falling into water to change for the position around leading flowing water tank, the work of accessible electric controller control motor drive screw makes the body back-and-forth movement, thereby adjusts leading flowing water tank and for the position of tail water, makes the tail water point of falling into water be located leading flowing water tank. The utility model discloses in, the preferred distance through position sensor real-time supervision body back-and-forth movement to realize accurate removal.

The utility model discloses a spare part less, simple structure, it is simple and convenient, with low costs to make, greatly reduced equipment investment and working costs.

Drawings

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of the utility model of a hydropower station tail water secondary power generation device.

Fig. 2 is a schematic plan view of the hydropower station tail water secondary power generation device of the utility model.

Fig. 3 is a schematic view of an installation structure of the middle-front row generator set, the rear row generator set and the diversion water tank of the present invention.

Fig. 4 is a side view of fig. 3.

Fig. 5 is a schematic top view of the floating body of the present invention.

Fig. 6 is a schematic cross-sectional view taken along line D-D in fig. 5.

Detailed Description

Referring to fig. 1 to 6, the hydropower station tail water secondary power generation device comprises an impeller 1 and a generator 2; the rotation shaft of the impeller 1 is connected with the rotation shaft of the generator 2, the impeller 1 and the generator 2 are combined to form a generator set A, the hydropower station tail water secondary power generation device further comprises a floating body 3 and a diversion water tank 4 arranged on the floating body 3, the floating body 3 is preferably in a ship shape or a rectangular shape with equal length, the floating body 3 is arranged on the water surface at the bottom of the hydropower station, a front-row generator set B and a rear-row generator set C which are formed by arranging a plurality of generator sets A are arranged on the floating body 3, the front-row generator set B and the rear-row generator set C are arranged in parallel along the length direction of the floating body 3, the impeller 1 in the front-row generator set B and the impeller 1 in the rear-row generator set C are symmetrically arranged in the width direction of the floating body 3, the diversion water tank 4 is provided with a main diversion water tank 4-1 arranged along the length direction of the floating body 3 and a plurality of front-branch diversion water 2 and a rear branch diversion flume 4-3, wherein the main diversion flume 4-1 is preferably fixedly arranged on the floating body 3 by a V-shaped support plate 7 through bolts or welding, the front branch diversion flume 4-2 and the rear branch diversion flume 4-3 which are arranged in pairs are arranged at intervals along the length direction of the main diversion flume 4-1, the front branch diversion flume 4-2 and the rear branch diversion flume 4-3 which are arranged in pairs are respectively arranged corresponding to the impeller 1 in the front row of generating set B and the impeller 1 in the rear row of generating set C, and when the tail water 8 of the hydropower station flows out of the front branch diversion flume 4-2 and the rear branch diversion flume 4-3 to respectively drive the impeller 1 in the front row of generating set B and the impeller 1 in the rear row of generating set C to rotate, the rotation directions of the impeller 1 in the front row of generating set B and the impeller 1 in the rear row of generating. In implementation, as shown in fig. 3 and 4, the water outlet of the front branch diversion water tank 4-2 can be directed to the rear side of the impeller 1 in the front-row generator set B, so that the tail water flowing out of the front branch diversion water tank 4-2 drives the impeller 1 in the front-row generator set B to rotate counterclockwise, and the water outlet of the rear branch diversion water tank 4-3 is directed to the front side of the impeller 1 in the rear-row generator set C, so that the tail water flowing out of the rear branch diversion water tank 4-3 drives the impeller 1 in the rear-row generator set C to rotate clockwise, and the rotation directions of the two are opposite, so that the force of the floating body 3 relative to the front and rear directions of the tail water is always kept; of course, the water outlet of the front branch diversion water tank 4-2 may also face the front side of the impeller 1 in the front row generator set B, so that the tail water flowing out of the front branch diversion water tank 4-2 drives the impeller 1 in the front row generator set B to rotate clockwise, and the water outlet of the rear branch diversion water tank 4-3 faces the rear side of the impeller 1 in the rear row generator set C, so that the tail water flowing out of the rear branch diversion water tank 4-3 drives the impeller 1 in the rear row generator set C to rotate counterclockwise, which is not shown in the figure.

As a preferred embodiment of the present invention, as shown in fig. 3, 5 and 6, the cross section of the floating body 3 is trapezoidal, the shell of the floating body 3 is enclosed by a stainless steel plate 3-1, the shell of the floating body 3 is filled with a light foaming material 3-2, and when the floating body is implemented, the front-row generator set B and the rear-row generator set C can be fixedly connected with the stainless steel plate 3-1 through connecting members such as bolts, which are not shown in the figure. In the present invention, the floating body 3 may be in the shape of a long bar, a trapezoid, a rectangular body, or the like.

As a preferred embodiment of the present invention, the light foaming material 3-2 is a polyethylene foam or a polyurethane foam.

As a preferred embodiment of the present invention, the cross-sectional shape of the joint of the main water guiding groove 4-1, the front branch water guiding groove 4-2 and the rear branch water guiding groove 4-3 is an inverted Y shape.

As a preferred embodiment of the present invention, the floating body 3 is further provided with a propeller 5 driven by a motor, and the motor is connected with an electric controller on a hydropower station or a land through a wireless signal. When the floating body 3 moves forwards and backwards, the position of the main water flowing groove 4-1 relative to the tail water 8 is adjusted, and the water falling point of the tail water 8 is located in the main water flowing groove 4-1, wherein the motor and the electric controller are not shown in the figure.

As a preferred embodiment of the present invention, the floating body 3 is further provided with a position sensor 6, and the position sensor 6 is connected to an electric controller on a hydropower station or a land through a wireless signal. When the device works, the distance of the floating body 3 moving back and forth can be monitored in real time through the position sensor 6, so that accurate movement is realized.

In the present invention, the electric controller is preferably a PLC programmable controller or a digital controller such as a DDC digital controller.

When in use, the utility model discloses a power station tail water secondary power generation device directly places on the surface of water 10 of bottoms such as power station 9 or dam, and the tail water 8 point of falling into water is located leading tye 4-1, can carry out continuous power generation work, and it is very convenient to use.

Claims

1. A hydropower station tail water secondary power generation device comprises an impeller (1) and a generator (2); the pivot of impeller (1) is connected with the pivot of generator (2), and impeller (1) forms a generating set (A) with generator (2) combination, its characterized in that: the hydropower station tail water secondary power generation device further comprises a floating body (3) and a diversion water tank (4) arranged on the floating body (3), the floating body (3) is arranged on the water surface at the bottom of the hydropower station, a front row generator set (B) and a rear row generator set (C) which are formed by arranging a plurality of generator sets (A) are arranged on the floating body (3), the front row generator set (B) and the rear row generator set (C) are arranged in parallel along the length direction of the floating body (3), an impeller (1) in the front row generator set (B) and an impeller (1) in the rear row generator set (C) are symmetrically arranged in the width direction of the floating body (3), the diversion water tank (4) is provided with a main diversion water tank (4-1) arranged along the length direction of the floating body (3) and a plurality of front branch diversion water tanks (4-2) and rear branch diversion water tanks (4-2) which are arranged in pairs at the bottom of the main diversion water tank (4-1) and are symmetrically arranged in the width direction 3) The front branch diversion water tanks (4-2) and the rear branch diversion water tanks (4-3) which are arranged in pairs are arranged at intervals along the length direction of the main diversion water tank (4-1), the front branch diversion water tanks (4-2) and the rear branch diversion water tanks (4-3) which are arranged in pairs are respectively arranged corresponding to the impellers (1) in the front row generator set (B) and the impellers (1) in the rear row generator set (C), and when the tail water of the hydropower station flows out of the front branch diversion water tanks (4-2) and the rear branch diversion water tanks (4-3) to respectively drive the impellers (1) in the front row generator set (B) and the impellers (1) in the rear row generator set (C) to rotate, the rotation directions of the impellers (1) in the front row generator set (B) and the impellers (1) in the rear row generator set (C) are opposite.

2. The hydropower station tail water secondary power generation device according to claim 1, characterized in that: the cross section of the floating body (3) is trapezoidal, the shell of the floating body (3) is surrounded by stainless steel plates, and the shell of the floating body (3) is filled with light foaming materials.

3. The hydropower station tail water secondary power generation device according to claim 2, characterized in that: the light foaming material is polyethylene foam plastic or polyurethane foam plastic.

4. The hydropower station tail water secondary power generation device according to claim 1, characterized in that: the cross section of the joint of the main water guiding groove (4-1), the front branch water guiding groove (4-2) and the rear branch water guiding groove (4-3) is in an inverted Y shape.

5. The hydropower station tail water secondary power generation device according to any one of claims 1 to 4, characterized in that: a propeller (5) driven by a motor is also arranged on the floating body (3), and the motor is connected with an electric controller on a hydropower station or land through a wireless signal.

6. The hydropower station tail water secondary power generation device according to claim 5, characterized in that: and a position sensor (6) is also arranged on the floating body (3), and the position sensor (6) is connected with an electric controller on a hydropower station or a land through a wireless signal.

7. The hydropower station tail water secondary power generation device according to claim 5, characterized in that: the electric controller is a PLC programmable controller or a digital controller.