CN217129675U

CN217129675U - High-strength wear-resistant water turbine runner

Info

Publication number: CN217129675U
Application number: CN202221120080.0U
Authority: CN
Inventors: 吴向荣; 张晓东; 丁玉琴; 陈学超
Original assignee: HANGZHOU FUCHUNJIANG HYDROPOWER EQUIPMENT CO LTD
Current assignee: HANGZHOU FUCHUNJIANG HYDROPOWER EQUIPMENT CO LTD
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-08-05
Anticipated expiration: 2032-05-11

Abstract

The utility model discloses a stand wear and tear hydraulic turbine runner of high strength, including crown, lower ring, blade and sluicing awl, the outside of crown and lower ring is equipped with protection machanism, protection machanism includes upper fixed ring, lower fixed ring, sand prevention net, fixed plate, arc, movable block. Belong to the hydraulic turbine field, through at the crown, the bottom ring, the wear-resistant coating that the surface of blade and wash-out awl plated with the mode of spraying, can improve the hardness on hydraulic turbine runner surface, and the wearing and tearing that the hydraulic turbine runner received have been reduced, and protection machanism's use in the cooperation, utilize sand prevention net to adopt filterable mode to avoid the husky granule in the high-speed rivers to produce the impact to the blade, and the network structure of sand prevention net can be cut apart the bubble that rivers formed and break up, can prevent effectively that the bubble that rivers produced under high-speed impact and carry ground silt granule from further causing the influence of cavitation erosion and abrasion and erosion and abrasion to the blade, thereby reach the mesh that improves hydraulic turbine runner high strength abrasion resistance.

Description

High-strength wear-resistant water turbine runner

Technical Field

The utility model relates to a hydraulic turbine field, in particular to high strength stand wear and tear hydraulic turbine runner.

Background

The hydraulic turbine is a power machine for converting the energy of water flow into rotary mechanical energy, and belongs to the turbine machinery in fluid machinery. Modern water turbines are mostly installed in hydropower stations and are used for driving generators to generate electricity. Because of the characteristics of large fall, high water flow speed and high sand content in water of power generation water in China, the sand-containing water flow and cavitation bubbles impact water turbine components at high speed in a superposed mode, but the existing water turbine is lack of protective measures and low in abrasion degree, so that cavitation abrasion caused by the bubbles and erosion abrasion caused by high-speed water flow and sand particles are formed on blades under the high-speed impact of the water flow.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a high strength is stand wear and tear hydraulic turbine runner, can effectively solve the problem in the background art.

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

the utility model provides a high strength stand wear and tear hydraulic turbine runner, includes crown, lower ring, blade and sluicing awl, the outside of crown and lower ring is equipped with protection machanism, protection machanism includes upper fixed ring, lower fixed ring, sand prevention net, fixed plate, arc, movable block and screw thread knob, through connecting rod fixed connection between upper fixed ring and the lower fixed ring, and sand prevention net fixed connection between the connecting rod, fixed plate fixed connection is on lower fixed ring's outer wall, and the movable block passes through both sides slider swing joint in the bottom surface of fixed plate, the arc passes through connecting block fixed connection on the outer wall on the bottom surface of movable block, screw thread knob swing joint is in the lateral wall of fixed plate, and the screw thread knob passes through the turning block and the movable block swing joint of front end.

Preferably, the outer surfaces of the upper crown, the lower ring, the blades and the drainage cone are coated with a layer of wear-resistant coating in a spraying mode, and four sides of the outer wall of the lower ring are respectively and fixedly provided with clamping blocks.

Preferably, four connecting rods are fixedly arranged between the upper fixing ring and the lower fixing ring in an annular array mode and are in a conical shape, and a sand prevention net is fixedly arranged between the adjacent connecting rods.

Preferably, the four sides of the bottom surface of the lower fixing ring are respectively and fixedly provided with a fixing block, and the inner side wall of the fixing block is provided with a clamping groove corresponding to the fixing block.

Preferably, the four sides of the outer wall of the lower fixing ring are respectively and fixedly provided with a fixing plate, the bottom surface of each fixing plate is provided with a groove, the two sides of the inner wall of each groove are respectively provided with a sliding groove, and the outer side wall of each fixing plate is further provided with a threaded hole.

Preferably, fixed mounting has the connecting block on the lateral wall of arc, and the top fixed mounting of connecting block has the movable block, the movable block is located the recess, and on the both sides lateral wall of movable block respectively fixed mounting have the slider, slider slidable mounting is in the spout, protruding type movable groove has been seted up on the lateral wall of movable block, the screw knob screw in is installed in the screwed hole, and the front end fixed mounting of screw knob has the turning block, turning block movable mounting is in the movable groove.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses in, through at the crown, the lower ring, the wear-resistant coating that the surface of blade and wash-out awl plated with the mode of spraying, can improve the hardness on hydraulic turbine runner surface, and the wearing and tearing that the hydraulic turbine runner received have been reduced, and protective mechanism's use in the cooperation, utilize sand prevention net to adopt filterable mode to avoid the husky granule in the high-speed rivers to produce the impact to the blade, and sand prevention net's network structure can be cut apart the bubble that rivers formed and break up, can prevent effectively that the bubble that rivers produced under the high-speed impact and carry ground silt granule from further causing the influence of cavitation erosion wearing and tearing and erosion wearing and tearing to the blade, thereby reach the purpose that improves hydraulic turbine runner high strength abrasion resistance.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic bottom view of the overall structure of the turbine runner of the present invention;

FIG. 3 is a schematic structural view of a blade and a wear-resistant coating according to the present invention;

fig. 4 is a schematic view of the overall structure of the protection mechanism of the present invention;

fig. 5 is the utility model discloses a graph A department structure dissects the split sketch map.

In the figure: 1. crown forming; 2. a lower ring; 3. a blade; 4. a protection mechanism; 5. a water drainage cone; 6. a clamping block; 7. a wear-resistant coating; 8. an upper fixing ring; 9. a lower fixing ring; 10. a connecting rod; 11. a sand control net; 12. a fixed block; 13. a card slot; 14. a fixing plate; 15. a groove; 16. a chute; 17. a threaded hole; 18. an arc-shaped plate; 19. connecting blocks; 20. a movable block; 21. a slider; 22. a movable groove; 23. a threaded knob; 24. and (6) rotating the block.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-5, a high-strength wear-resistant turbine runner comprises an upper crown 1, a lower ring 2, blades 3 and a drain cone 5, wherein a protection mechanism 4 is arranged outside the upper crown 1 and the lower ring 2, the protection mechanism 4 comprises an upper fixing ring 8, a lower fixing ring 9, a sand-proof net 11, a fixing plate 14, an arc-shaped plate 18, a movable block 20 and a threaded knob 23, the upper fixing ring 8 and the lower fixing ring 9 are fixedly connected through a connecting rod 10, and the sand-proof net 11 is fixedly connected between the connecting rods 10, the fixing plate 14 is fixedly connected on the outer wall of the lower fixing ring 9, and the movable block 20 is movably connected in the bottom surface of the fixed plate 14 through the sliding blocks 21 at the two sides, the arc-shaped plate 18 is fixedly connected on the bottom surface of the movable block 20 through the connecting block 19 on the outer wall, the threaded knob 23 is movably connected in the side wall of the fixed plate 14, and the threaded knob 23 is movably connected with the movable block 20 through the rotating block 24 at the front end.

As shown in fig. 2-5, in this embodiment, in order to improve the high strength and wear resistance of the turbine runner, the outer surfaces of the crown 1, the lower ring 2, the blades 3 and the drain cone 5 are coated with a wear-resistant coating 7 by spraying, four sides of the outer wall of the lower ring 2 are respectively and fixedly provided with the fixture blocks 6, four connecting rods 10 are fixedly installed between the upper fixing ring 8 and the lower fixing ring 9 in an annular array manner and present a cone shape, a sand-proof net 11 is also fixedly installed between the adjacent connecting rods 10, four sides of the bottom surface of the lower fixing ring 9 are respectively and fixedly provided with the fixture blocks 12, the inner side wall of the fixture block 12 is provided with the clamping grooves 13 corresponding to the fixture blocks 6, four sides of the outer wall of the lower fixing ring 9 are respectively and fixedly provided with the fixing plates 14, the bottom surface of the fixing plate 14 is provided with the grooves 15, two sides of the inner wall of the groove 15 are respectively provided with the sliding grooves 16, and the outer side wall of the fixing plate 14 is further provided with the threaded holes 17, the outer side wall of the arc plate 18 is fixedly provided with a connecting block 19, the top end of the connecting block 19 is fixedly provided with a movable block 20, the movable block 20 is positioned in the groove 15, the side walls of the two sides of the movable block 20 are respectively and fixedly provided with a sliding block 21, the sliding blocks 21 are slidably arranged in the sliding grooves 16, the outer side wall of the movable block 20 is provided with a convex movable groove 22, a threaded knob 23 is screwed in the threaded hole 17, the front end of the threaded knob 23 is fixedly provided with a rotating block 24, and the rotating block 24 is movably arranged in the movable groove 22;

the specific operation is as follows: firstly, a water turbine runner composed of an upper crown 1, a lower ring 2, blades 3 and a drain cone 5 is arranged between the inner rings of an upper fixed ring 8 and a lower fixed ring 9, in the installation process, a fixture block 6 arranged on the outer wall of the lower ring 2 is aligned with a fixed block 12 arranged on the bottom surface of the lower fixed ring 9, after the water turbine runner is completely arranged between the inner rings of the upper fixed ring 8 and the lower fixed ring 9, the fixture block 6 is clamped in a clamping groove 13 arranged on the inner side wall of the fixed block 12, then a screw knob 23 positioned on the four sides of the outer wall of the lower fixed ring 9 is manually rotated, the screw knob 23 realizes screw thread rotation in a screw hole 17 arranged on a fixed plate 14 arranged on the outer wall of the lower fixed ring 9, a rotating block 24 arranged at the front end of the screw knob 23 rotates in a movable groove 22 arranged on the outer wall of the movable block 20, and thus the movable block 20 is continuously pushed to move in a groove 15 arranged on the bottom surface of the fixed plate 14 in the process of rotating the screw knob 23, and in the moving process, the sliding blocks 21 arranged at the two sides of the movable block 20 slide in the sliding grooves 16, the movable block 20 drives the arc-shaped plates 18 to realize synchronous moving operation through the connecting blocks 19 in the moving process, the arc-shaped plates 18 are gradually attached to the outer wall of the lower fixing ring 9 until the screw knobs 23 cannot rotate, the water turbine rotating wheel is clamped between the arc-shaped plates 18 at the four sides of the lower fixing ring 9, the installation operation of the protection mechanism 4 is completed, when the blades 3 are driven to rotate through the upper crown 1 and water flow is introduced, the water flow contacts the blades 3 through the sand prevention nets 11 arranged between the connecting rods 10 arranged between the upper fixing ring 8 and the lower fixing ring 9, and in the process, silt particles carried in the water flow are blocked by the sand prevention nets 11 and filtered outside the water turbine rotating wheel, so that the erosion and abrasion of the blades 3 caused by the silt particles are prevented, meanwhile, the sand control net 11 is of a net structure, so that bubbles in water flow are scattered by penetrating through the sand control net 11, cavitation abrasion of the blades 3 caused by the bubbles is prevented, and the wear-resistant coating 7 plated on the outer surface of the water turbine runner can improve the hardness of the surface of the water turbine runner and reduce the abrasion of the water turbine runner.

While the invention has been described in detail with reference to the preferred embodiments thereof, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention, and it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Claims

1. The utility model provides a stand wear and tear hydraulic turbine runner of high strength, includes crown (1), lower ring (2), blade (3) and wash-out awl (5), its characterized in that: the outer parts of the upper crown (1) and the lower ring (2) are provided with a protection mechanism (4), the protection mechanism (4) comprises an upper fixing ring (8), a lower fixing ring (9), a sand prevention net (11), a fixing plate (14), an arc-shaped plate (18), a movable block (20) and a thread knob (23), the upper fixing ring (8) and the lower fixing ring (9) are fixedly connected through a connecting rod (10), the sand prevention net (11) is fixedly connected between the connecting rods (10), the fixing plate (14) is fixedly connected on the outer wall of the lower fixing ring (9), the movable block (20) is movably connected in the bottom surface of the fixing plate (14) through sliding blocks (21) on two sides, the arc-shaped plate (18) is fixedly connected on the bottom surface of the movable block (20) through a connecting block (19) on the outer wall, the thread knob (23) is movably connected in the side wall of the fixing plate (14), and the screw thread knob (23) is movably connected with the movable block (20) through a rotating block (24) at the front end.

2. A high strength wear resistant hydraulic turbine runner in accordance with claim 1, wherein: the outer surfaces of the upper crown (1), the lower ring (2), the blades (3) and the water discharge cone (5) are coated with a wear-resistant coating (7) in a spraying mode, and four sides of the outer wall of the lower ring (2) are respectively fixedly provided with clamping blocks (6).

3. A high strength wear resistant hydraulic turbine runner in accordance with claim 2, wherein: go up solid fixed ring (8) and gu between fixed ring (9) with annular array's mode fixed mounting have four connecting rods (10) and present the toper, and still fixed mounting has sand control net (11) between adjacent connecting rod (10).

4. A high strength wear resistant hydraulic turbine runner in accordance with claim 3, wherein: four sides of the bottom surface of the lower fixing ring (9) are respectively and fixedly provided with a fixing block (12), and a clamping groove (13) corresponding to the clamping block (6) is formed in the inner side wall of the fixing block (12).

5. A high strength wear resistant hydraulic turbine runner in accordance with claim 4, wherein: the four sides of the outer wall of the lower fixing ring (9) are respectively and fixedly provided with a fixing plate (14), the bottom surface of the fixing plate (14) is provided with a groove (15), the two sides of the inner wall of the groove (15) are respectively provided with a sliding groove (16), and the outer side wall of the fixing plate (14) is further provided with a threaded hole (17).

6. A high strength wear resistant hydraulic turbine runner in accordance with claim 5, wherein: fixed mounting has connecting block (19) on the lateral wall of arc (18), and the top fixed mounting of connecting block (19) has movable block (20), movable block (20) are located recess (15), and on the both sides lateral wall of movable block (20) respectively fixed mounting have slider (21), slider (21) slidable mounting is in spout (16), convex type movable groove (22) have been seted up on the lateral wall of movable block (20), screw knob (23) screw in is installed in screw hole (17), and the front end fixed mounting of screw knob (23) has turning block (24), turning block (24) movable mounting is in movable groove (22).