CN212896244U

CN212896244U - Tail canal structure of hydropower station

Info

Publication number: CN212896244U
Application number: CN202021618405.9U
Authority: CN
Inventors: 陶荣山
Original assignee: Malipo Manguan Hydropower Co ltd
Current assignee: Malipo Manguan Hydropower Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-04-06
Anticipated expiration: 2030-08-06

Abstract

The utility model discloses a tail canal structure of power station, including slope canal section, arc canal section, gentle canal section, slope canal section, arc canal section, gentle canal section constitute the tail canal, the downside of tail canal is the ground at the bottom of the canal, the upside of ground and the left side that is located slope canal section at the bottom of the canal are provided with the power station factory building, arc canal section sets up in the right side of slope canal section, gentle canal section sets up in one side that slope canal section was kept away from to arc canal section. The utility model discloses in, go out water department at the power station factory building and improve the tail water velocity of flow, later use the centrifugal force in arc canal section to throw away cubic or particulate matter such as grit in the tail water to the front side of arc canal section, to cubic or particulate matter such as grit of tail water lower part through fan-shaped dredging the bottom plate and dredge, the grit finally gets into the siltation hole, can the significantly reduced tail water get into the grit of gentle canal section, can conveniently concentrate the clearance to the grit in the siltation hole at the desilting platform.

Description

Tail canal structure of hydropower station

Technical Field

The utility model relates to a power station tail canal engineering technical field especially relates to a tail canal structure of power station.

Background

After passing through the water turbine, the water energy carried by the water flow is absorbed and utilized by the water turbine to become tail water. The channel that drains the tailwater from the power plant building to the downstream riverbed is called the tailrace. When the factory building is underground, the tailrace and the factory building are usually connected by a tailrace tunnel. If the tailwater tunnel is a non-pressure tunnel, the tailwater tunnel also becomes a section of the tailwater canal.

Because the tail water contains blocks or particles such as certain gravel, the blocks or particles such as gravel are deposited in the tail water channel in the tail water discharge process, and then after a long time, the deposits in the tail water channel are more, so that the power generation water level is improved, and meanwhile, the desilting in the tail water channel is inconvenient to carry out.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a tailrace structure of a hydropower station.

In order to achieve the above purpose, the utility model adopts the following technical scheme: comprises an inclined canal section, an arc canal section and a smooth canal section, wherein the inclined canal section, the arc canal section and the smooth canal section form a tail canal, the lower side of the tail water channel is provided with a channel bottom foundation, the upper side of the channel bottom foundation and the left side of the inclined channel section are provided with hydropower station plants, the arc-shaped channel section is arranged at the right side of the inclined channel section, the gentle channel section is arranged at one side of the arc-shaped channel section far away from the inclined channel section, the bottom of the arc-shaped channel section is fixedly connected with a fan-shaped dredging bottom plate, a siltation pit is arranged at the bottom of the arc-shaped channel section and positioned at the right side of the fan-shaped dredging bottom plate, the rear side of the tailrace is a rear side bank, the front side of the tailrace is a front side bank, the upper part of the front side bank is provided with a dredging platform at the front side of the fan-shaped dredging bottom plate, a first fixed dike is arranged on the front side of the fan-shaped dredging bottom plate and on the left side of the dredging platform, and a second fixed dike is arranged on the left side of the first fixed dike.

As a further description of the above technical solution:

the arc canal section is slope form and the rear side is higher than the front side, smooth transition between slope canal section, arc canal section, the gentle canal section.

As a further description of the above technical solution:

the fan-shaped dredging bottom plate and the arc-shaped channel section are consistent in inclination direction, the fan-shaped dredging bottom plate is provided with edge grooves, and the edge grooves are different in height and gradually become steep from the rear side to the front side of the fan-shaped dredging bottom plate.

As a further description of the above technical solution:

the second fixed dike is fixedly connected to the connecting transition position of the inclined channel section and the arc channel section, and the second fixed dike is pre-buried into the front side bank.

As a further description of the above technical solution:

the first fixed embankment is fixedly connected with the dredging table, the first fixed embankment is embedded into the front bank, and the first fixed embankment and the second fixed embankment are spaced.

As a further description of the above technical solution:

the inclined lower side of the fan-shaped dredging bottom plate faces the left side of the siltation pit, and the siltation pit is close to the front side of the arc-shaped channel section and is lower than the horizontal height of the gentle channel section.

The utility model discloses following beneficial effect has:

compared with the prior art, this power station's tailrace structure improves the tail water velocity of flow in power station factory building play water department, later uses the front side that cubic or particulate matter such as grit in the tail water were thrown away to the arc canal section at the arc canal section using centrifugal force, dredges the bottom plate through fan-shaped dredging to cubic or particulate matter such as grit of tail water lower part, and the grit finally gets into the siltation pit, and the grit that can the significantly reduced tail water got into the gentle canal section can conveniently concentrate the clearance to the grit in the siltation pit at the desilting platform.

Drawings

Fig. 1 is a top view of a tailrace structure of a hydropower station according to the present invention;

fig. 2 is a schematic view of an inclined canal section of a tailrace structure of a hydropower station according to the present invention;

fig. 3 is a schematic view of a fan-shaped dredging bottom plate of a tailrace structure of a hydropower station according to the present invention.

Illustration of the drawings:

1. an inclined canal section; 2. a fan-shaped dredging bottom plate; 3. a rear side bank; 4. an arc-shaped canal section; 5. silting a pit; 6. a gentle canal section; 7. a dredging platform; 8. a first fixed bank; 9. a front side bank; 10. a second fixed bank; 11. a hydropower station workshop; 12. a trench bottom foundation; 13. and (4) a ridge groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the utility model provides a pair of power station's tailrace structure: comprises an inclined canal section 1, an arc canal section 4 and a gentle canal section 6, wherein the inclined canal section 1, the arc canal section 4 and the gentle canal section 6 form a tail water canal, the inclined canal section 1 is used for increasing the flow velocity of tail water, the lower side of the tail water canal is a canal bottom foundation 12, a hydropower station factory building 11 is arranged on the upper side of the canal bottom foundation 12 and on the left side of the inclined canal section 1 and is used for a hydropower station power generation place, the arc canal section 4 is arranged on the right side of the inclined canal section 1, the gentle canal section 6 is arranged on one side of the arc canal section 4 far away from the inclined canal section 1, a fan-shaped dredging bottom plate 2 is fixedly connected with the bottom of the arc canal section 4 and is used for sandstone dredging, a siltation pit 5 is arranged on the right side of the fan-shaped dredging bottom plate 2 and is used for silting sandstone, the rear side of the tail water canal is a rear side bank 3, the front side of the tail water canal is a front side bank 9, a dredging platform 7 is arranged on the upper part of the front side of the, the dredging device is used for intensively cleaning the siltation pits 5, a first fixed dike 8 is arranged on the front side of the fan-shaped dredging bottom plate 2 and on the left side of the dredging platform 7, and a second fixed dike 10 is arranged on the left side of the first fixed dike 8.

The arc canal section 4 is inclined, the back side is higher than the front side, the arc canal section 4 is used for increasing the centrifugal force of sand and stone and reducing the erosion to the back side of the arc canal section 4, the inclined canal section 1, the arc canal section 4 and the gentle canal section 6 are in smooth transition, the inclination directions of the fan-shaped dredging bottom plate 2 and the arc canal section 4 are consistent, the fan-shaped dredging bottom plate 2 is provided with a ridge groove 13, used for dredging the grit, the edge and groove 13 height differs and dredges 2 rear sides to the front side steepening gradually from fan-shaped, fixed embankment 10 fixed connection of second is in inclined canal section 1 and arc canal section 4's transition department of being connected, the fixed embankment 10 of second is pre-buried on leading bank 9, first fixed embankment 8 and dredging platform 7 fixed connection, first fixed embankment 8 is pre-buried on leading bank 9, first fixed embankment 8 and the fixed embankment 10 looks interval of second, the left side of the slope downside orientation siltation pit 5 of fan-shaped dredging bottom plate 2, siltation pit 5 is close to the front side of arc canal section 4 and highly is less than the level of gentle section 6.

The working principle is as follows: the tail water that contains the grit that power station factory building 11 goes out leaves, at the 1 high velocity of flow of slope canal section, after getting into arc canal section 4, produce centrifugal force under the effect of arc canal section 4 structure, get rid of some grit to the front side of arc canal section 4, the subaqueous grit of some tails is dredged by the arris groove 13 on the fan-shaped bottom plate 2 of dredging, concentrate behind the grit and get into in the siltation pit 5, the desilting personnel can carry out the desilting to siltation pit 5 on desilting platform 7, flow through in the tail water of 5 upsides in the siltation pit, grit content greatly reduced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a tail canal structure of power station, includes slope canal section (1), arc canal section (4), gentle canal section (6), its characterized in that: the inclined canal section (1), the arc canal section (4) and the gentle canal section (6) form a tail canal, the lower side of the tail canal is a canal bottom foundation (12), a hydropower station factory building (11) is arranged on the upper side of the canal bottom foundation (12) and on the left side of the inclined canal section (1), the arc canal section (4) is arranged on the right side of the inclined canal section (1), the gentle canal section (6) is arranged on one side, away from the inclined canal section (1), of the arc canal section (4), the bottom of the arc canal section (4) is fixedly connected with a fan-shaped dredging bottom plate (2), a siltation pit (5) is arranged on the bottom of the arc canal section (4) and on the right side of the fan-shaped dredging bottom plate (2), the rear side of the tail canal is a rear side bank (3), the front side of the tail canal is a front side bank (9), and a dredging platform (7) is arranged on the upper portion of the front side bank (9) which is arranged on the fan-shaped dredging bottom plate (2), a first fixed dike (8) is arranged on the front side of the fan-shaped dredging bottom plate (2) and on the left side of the dredging platform (7), and a second fixed dike (10) is arranged on the left side of the first fixed dike (8).

2. The tailrace structure for a hydroelectric power plant according to claim 1, wherein: arc canal section (4) are slope form and the rear side is higher than the front side, smooth transition between slope canal section (1), arc canal section (4), gentle canal section (6).

3. The tailrace structure for a hydroelectric power plant according to claim 1, wherein: the inclination directions of the fan-shaped dredging bottom plate (2) and the arc-shaped canal section (4) are consistent, the fan-shaped dredging bottom plate (2) is provided with edge grooves (13), and the height of the edge grooves (13) is different and gradually becomes steep from the rear side to the front side of the fan-shaped dredging bottom plate (2).

4. The tailrace structure for a hydroelectric power plant according to claim 1, wherein: the second fixed dike (10) is fixedly connected to the connecting transition position of the inclined channel section (1) and the arc channel section (4), and the second fixed dike (10) is pre-embedded into the front side bank (9).

5. The tailrace structure for a hydroelectric power plant according to claim 1, wherein: the first fixed embankment (8) is fixedly connected with the desilting platform (7), the first fixed embankment (8) is pre-buried into the front side bank (9), and the first fixed embankment (8) and the second fixed embankment (10) are spaced.

6. The tailrace structure for a hydroelectric power plant according to claim 1, wherein: the inclined lower side of the fan-shaped dredging bottom plate (2) faces the left side of the sedimentation pit (5), and the sedimentation pit (5) is close to the front side of the arc-shaped channel section (4) and is lower than the horizontal height of the gentle channel section (6).