CN213038338U

CN213038338U - High-strength hydropower station draft tube

Info

Publication number: CN213038338U
Application number: CN202021618444.9U
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: 2021-04-23
Anticipated expiration: 2030-08-06

Abstract

The utility model discloses a high-strength hydropower station draft tube, which comprises a tube body, a reinforcing rib, a guide plate and a filter screen, the pipe body is a frustum-shaped hollow circular pipe, four circles of reinforcing ribs are fixedly welded on the outer wall of the pipe body, the right end of the pipe body is an input end, and the right end is fixedly connected with a compression ring, the right side of the compression ring is fixedly connected with a main pipeline, the inner wall of the main pipeline close to the compression ring is provided with internal threads, the compression ring and the two sides of the main pipeline are respectively provided with a connecting rod, the connecting rod is fixedly connected with the main pipeline and the compression ring, the inner cavity of the pipe body is a flow guide cavity, a guide plate is arranged in the middle of the flow guide cavity, the guide plate is in a frustum shape, and main guide way and vice guide way have been seted up to the top, a filter screen is installed to body output end department, four first archs of filter screen circumference department fixedly connected with. The utility model discloses in, can effectively reduce the velocity of water flow and pressure in the trunk line, the structure is firm, utilizes water pressure to form the locking.

Description

High-strength hydropower station draft tube

Technical Field

The utility model relates to a hydroelectric power generation equipment technical field especially relates to a high strength power station draft tube.

Background

The hydraulic power generation part has various application environments, needs to be soaked for long time, has high requirements on the corrosion resistance of the part, is one of important parts of draft tube type hydraulic power generation, is positioned below the rotating wheel and is a main through-flow component and used for guiding water flow entering and exiting the rotating wheel; the draft tube is used as a discharge device and is in a high-pressure state for a long time so as to ensure the smooth discharge of the internal water flow.

In the existing tail water pipe structure, a longer tail water pipe needs to be paved mostly to deal with high pressure during pipeline output, and the shorter tail water pipe can not ensure smooth discharge of internal water flow and effectively reduce the speed of water flow in the pipe.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a high-strength hydropower station draft tube.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a high-strength hydropower station draft tube comprises a tube body, reinforcing ribs, guide plates and a filter screen, wherein the tube body is a frustum-shaped hollow round tube, four rings of reinforcing ribs are fixedly welded on the outer wall of the tube body, the right end of the tube body is an input end, a compression ring is fixedly connected with the right end of the tube body, a main tube is fixedly connected with the right side of the compression ring, internal threads are arranged on the inner wall of the main tube close to the compression ring, connecting rods are respectively arranged on two sides of the compression ring and the main tube, the connecting rods are fixedly connected with the main tube and the compression ring, a cavity inside the tube body is a flow guide cavity, a guide plate is arranged in the middle of the flow guide cavity, the guide plates are frustum-shaped, a main guide groove and an auxiliary guide groove are arranged above the guide plates, the filter screen is arranged at the output end of the tube body, four first protrusions are, and the body corresponds the department and is provided with first recess, be close to filter screen one side in the first recess and seted up the second recess, after first protruding embedding first recess, correspond second groove position department and be provided with the second arch.

As a further description of the above technical solution:

the diameter of the output end of the tube body is larger than that of the input end.

As a further description of the above technical solution:

the flow guide area of the main guide groove is larger than that of the auxiliary guide groove, and the diameter of one side, close to the output end of the pipe body, of the main guide groove and the auxiliary guide groove is smaller than that of one side, close to the main pipeline.

As a further description of the above technical solution:

a certain gap exists in the first groove, and the first groove and the first protrusion are in clearance fit with each other, and the second groove and the second protrusion are in clearance fit with each other.

As a further description of the above technical solution:

the pipe body, the guide plate and the reinforcing ribs are integrally formed by casting.

As a further description of the above technical solution:

the right end of the pipe body is provided with a notch, and the compression ring is just placed in the notch.

As a further description of the above technical solution:

and fillets are arranged at the notches of the main guide groove and the auxiliary guide groove.

The utility model discloses following beneficial effect has:

1. the utility model discloses well utilization guide plate effectively reduces the speed of rivers, and self stable in structure can bear rivers pressure, and long service life can save longer draft tube simultaneously and lay length.

2. The utility model discloses in add at the draft tube output and established the filter screen, can effectively reduce debris entering pipeline, guarantee generating set normal work.

3. The utility model discloses in through clamp ring, recess, protruding isotructure design, utilize the impact force of rivers, form the pressure locking of device junction, further increase the fastness of draft tube.

Drawings

Fig. 1 is a schematic structural view of a high-strength hydropower station draft tube provided by the utility model;

fig. 2 is a front view of a high strength hydropower station draft tube according to the present invention;

fig. 3 is a schematic diagram of a filter screen of a high-strength hydropower station draft tube provided by the utility model;

fig. 4 is the utility model provides a deflector cross-sectional view of high strength power station draft tube.

Illustration of the drawings:

1. a pipe body; 2. reinforcing ribs; 3. a guide plate; 4. a compression ring; 5. a connecting rod; 6. an internal thread; 7. A main pipeline; 8. filtering with a screen; 9. a flow guide cavity; 10. a second protrusion; 11. a second groove; 12. a first protrusion; 13. a first groove; 14. an auxiliary guide groove; 15. a main guide 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 present invention provides an embodiment: a high-strength hydropower station draft tube comprises a tube body 1, reinforcing ribs 2, a guide plate 3 and a filter screen 8, wherein the tube body 1 is a frustum-shaped hollow round tube, four rings of reinforcing ribs 2 are fixedly welded on the outer wall of the tube body 1, the right end of the tube body 1 is an input end, a compression ring 4 is fixedly connected with the right end, a main tube 7 is fixedly connected with the right side of the compression ring 4, internal threads 6 are arranged on the inner wall of the main tube 7 close to the compression ring 4, two sides of the compression ring 4 and the main tube 7 are respectively provided with a connecting rod 5, the main tube 7 and the compression ring 4 are fixedly connected by the connecting rod 5, a guide cavity 9 is arranged in the tube body 1, the guide plate 3 is arranged in the middle of the guide cavity 9, the guide plate 3 is frustum-shaped, a main guide groove 15 and an auxiliary guide groove 14 are arranged above the guide plate 3, the filter, first arch 12 evenly distributed is on the circumference of filter screen 8, and body 1 corresponds the department and is provided with first recess 13, is close to filter screen 8 one side in first recess 13 and has seted up second recess 11, and after first arch 12 imbeds first recess 13, it is provided with the protruding 10 of second to correspond second recess 11 position department.

The diameter of the output end of the pipe body 1 is larger than the diameter of the input end, the flow guide area of the main guide groove 15 is larger than that of the auxiliary guide groove 14, the diameter of the auxiliary guide groove 14, which is close to one side of the output end of the pipe body 1, is smaller than that of the main pipe line 7, a certain gap exists in the first groove 13, the first groove 13 and the first protrusion 12, the second groove 11 and the second protrusion 10 are in clearance fit, the pipe body 1 and the guide plate 3 are integrally formed by casting between the reinforcing ribs 2, the right end of the pipe body 1 is provided with a notch, the compression ring 4 is just placed in the notch, the main guide groove 15, the notch on the auxiliary guide groove 14 is provided with a.

The working principle is as follows:

1. the tail water pipe is connected with the main pipeline, the clamp ring is placed in the groove in the main pipeline, the main pipeline is connected in a threaded mode, and the connecting rod is inserted into the clamp ring to be fixedly connected with the main pipeline.

2. When the generator set works, high-pressure water flows in the main pipeline to the tail water pipe, when the high-pressure water flows through the guide plate, the guide plate buffers and shunts the water flow, and the water flow flows to the filter screen from the main guide groove and the auxiliary guide groove.

3. When rivers reachd the filter screen, form certain impact force to the filter screen, force the filter screen to the one side removal of keeping away from the body, the second arch is tightly impressed the second recess this moment, and first arch plays limiting displacement with first recess, guarantees that the filter screen does not drop, and then accomplishes the emission of rivers.

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 high strength power station draft tube, includes body (1), strengthening rib (2), deflector (3), filter screen (8), its characterized in that: the pipe body (1) is a frustum-shaped hollow circular pipe, four reinforcing ribs (2) are fixedly welded on the outer wall of the pipe body (1), the right end of the pipe body (1) is an input end, a compression ring (4) is fixedly connected to the right end of the pipe body, a main pipeline (7) is fixedly connected to the right side of the compression ring (4), internal threads (6) are arranged on the inner wall of the position, close to the compression ring (4), of the main pipeline (7), connecting rods (5) are respectively arranged on the two sides of the compression ring (4) and the main pipeline (7), the connecting rods (5) are fixedly connected with the main pipeline (7) and the compression ring (4), an inner cavity of the pipe body (1) is a flow guide cavity (9), a guide plate (3) is arranged in the middle of the flow guide cavity (9), the guide plate (3) is frustum-shaped, a main guide groove (15) and an auxiliary guide groove (14) are formed above the guide plate, four first archs (12) of filter screen (8) circumference fixedly connected with of department, first arch (12) evenly distributed is on the circumference of filter screen (8), and body (1) corresponds the department and is provided with first recess (13), be close to filter screen (8) one side in first recess (13) and seted up second recess (11), first arch (12) embedding first recess (13) back corresponds second recess (11) position department and is provided with the protruding (10) of second.

2. A high strength hydropower station draft tube according to claim 1, wherein: the diameter of the output end of the tube body (1) is larger than that of the input end.

3. A high strength hydropower station draft tube according to claim 1, wherein: the flow guide area of the main guide groove (15) is larger than that of the auxiliary guide groove (14), and the diameter of one side, close to the output end of the pipe body (1), of the main guide groove (15) and the auxiliary guide groove (14) is smaller than that of one side, close to the main pipeline (7).

4. A high strength hydropower station draft tube according to claim 1, wherein: a certain gap exists in the first groove (13), and the first groove (13) is in clearance fit with the first protrusion (12), and the second groove (11) is in clearance fit with the second protrusion (10).

5. A high strength hydropower station draft tube according to claim 1, wherein: the pipe body (1), the guide plate (3) and the reinforcing ribs (2) are integrally formed by casting.

6. A high strength hydropower station draft tube according to claim 1, wherein: the right end of the pipe body (1) is provided with a notch, and the compression ring (4) is just placed in the notch.

7. A high strength hydropower station draft tube according to claim 1, wherein: and fillets are arranged at the notches of the main guide groove (15) and the auxiliary guide groove (14).