CN219344862U

CN219344862U - Wear-resistant water turbine runner structure

Info

Publication number: CN219344862U
Application number: CN202320791937.XU
Authority: CN
Inventors: 傅霞光; 傅永军; 汪慧华; 严文兵; 吴卫东; 蓝秋平
Original assignee: Zhejiang Longyou Xiaoxitan Water Conservancy Project Development Co ltd
Current assignee: Zhejiang Longyou Xiaoxitan Water Conservancy Project Development Co ltd
Priority date: 2023-04-12
Filing date: 2023-04-12
Publication date: 2023-07-14
Anticipated expiration: 2033-04-12

Abstract

The utility model provides an antiwear water turbine runner structure, which relates to the technical field of water turbine parts and comprises: a runner body; the upper end of the runner body is connected with an upper connecting end post through welding; the floating support block is connected inside the rotating wheel body in a sliding way; the rotating wheel blades are arranged at four places; the hydraulic turbine blade in this application is equipped with buffer structure, reduce the excessive wearing and tearing and the damage that cause the blade of instantaneous rivers impact force, the blade damages the quick replacement of being convenient for simultaneously, has good practicality, solved traditional axial flow hydraulic turbine, when using under the unstable environment of rivers, if the instantaneous impact force of rivers is great, cause the impact to the blade of hydraulic turbine easily, the frequent impact blade of rivers can influence hydraulic turbine blade's life, lead to the hydraulic turbine blade to accelerate wearing and tearing easily, warp, and hydraulic turbine blade wearing and tearing, warp the back, because blade and runner body fixed connection lead to the problem that the single blade of damage is difficult to change.

Description

Wear-resistant water turbine runner structure

Technical Field

The utility model belongs to the technical field of parts of water turbines, and particularly relates to a runner structure of an antiwear water turbine.

Background

The water turbine is a power machine for converting the energy of water flow into rotary mechanical energy, most of modern water turbines are installed in hydropower stations to drive a generator to generate electricity, in the hydropower stations, water in an upstream reservoir is guided to the water turbine through a water guide pipe to push a water turbine runner to rotate to drive the generator to generate electricity, in the axial-flow water turbine, water turbine blades are installed on the runner body, and the axial-flow water turbine is suitable for power stations with small load change or can be used for adjusting the running number of units to adapt to the load change.

When traditional axial-flow water turbine uses under the unstable environment of rivers, if the instantaneous impact force of rivers is great, causes the impact to the blade of hydraulic turbine easily, and the frequent impact blade of rivers can influence hydraulic turbine blade's life, leads to hydraulic turbine blade to accelerate wearing and tearing, warp easily, and hydraulic turbine blade wearing and tearing, warp the back, because blade and runner body fixed connection lead to the single blade of damage difficult change.

Disclosure of Invention

The utility model provides a runner structure of an antiwear water turbine, which comprises a runner body; the upper end of the runner body is connected with an upper connecting end post through welding; the floating support block is connected inside the rotating wheel body in a sliding way; the rotating wheel blades are arranged everywhere and are arranged on the floating support blocks through sealing studs; the sealing inner ring is movably connected to the sealing stud.

Furthermore, the inside of the rotating wheel body is hollow, four buffer guide grooves are formed in the outer wall of the rotating wheel body in a penetrating mode, the buffer guide grooves are through grooves of rectangular structures, and the four buffer guide grooves are parallel to each other.

Further, the middle of the upper connecting end post is connected with an end post limiting connecting plate through welding.

Further, the floating support block is of a cylindrical structure, a support block inner groove of a circular groove structure is formed in the middle of the upper surface of the floating support block, a support block tension spring is fixedly connected to the inner bottom surface of the support block inner groove, the upper end of the support block tension spring is fixedly connected with an end column limiting connecting plate, and eight blade connecting screw holes are formed in the outer wall of the floating support block.

Further, the inner end of the runner blade is connected with a blade lifting guide block through welding, the blade lifting guide block penetrates through a blade mounting through hole with a two-position round hole structure, and the blade lifting guide block is rotationally connected with the sealing stud.

Further, the outer end of the blade mounting through hole is provided with a through hole end groove, and the through hole end groove is of a round groove structure.

Further, the inner end of the sealing stud is spirally connected with the blade connecting screw hole, the sealing stud is rotationally connected with the blade mounting through hole, the outer end of the sealing stud is fixedly connected with a rubber end, and an end rotating groove with a hexagonal structure is formed in the middle of the outer surface of the rubber end.

Furthermore, the sealing inner ring is made of rubber materials, the outer edge of the sealing inner ring is bent outwards, an inner ring through hole with a round hole structure is formed in the middle of the sealing inner ring, and the inner ring through hole is tightly connected with the sealing stud in a sliding mode.

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

1. in the axial-flow water turbine in this application, the inside swing joint of runner body has the floating branch piece, and floating branch piece and runner blade fixed connection, and be connected with a branch piece extension spring between runner body and floating branch piece, under the normality, the effect through a branch piece extension spring upwards lifts the floating branch piece, make the floating branch piece upwards drag runner blade, under the spacing guide effect of buffering guide way, limit the upper limit position of runner blade, make the blade lift guide block be located the inside upper end of buffering guide way, when the axial-flow water turbine inserts rivers, rivers flow downwards from the upper direction of runner body, impact runner blade, in the in-process to runner blade impact, make inclined state's runner blade rotatory, when rivers instantaneous impact force is too big simultaneously, make the blade lift guide block downwards slide in buffering guide way, downwards slide the in-process with floating branch piece downwards press, the pressure is greater than the pulling force of a branch piece extension spring, make floating branch piece and runner blade downwards move simultaneously, play the effect of buffering to runner blade, can reduce the instantaneous impact force to runner blade, reduce the impact to the turbine blade.

2. The blade lift guide block in this application passes through the sealing double-screw bolt with the floating support piece to be connected, when inside monolithic blade takes place to damage in the hydraulic turbine, can take out the runner body alone, and dismantle the sealing double-screw bolt in the blade lift guide block outside of damaging the blade, can demolish the blade that damages, and install new blade again on the floating support piece through the sealing double-screw bolt, can realize changing alone of damaging the blade, can see that the hydraulic turbine blade in this application is equipped with buffer structure, reduce the excessive wearing and tearing and the damage that cause the blade of instantaneous rivers impact force, the blade damages the quick replacement of being convenient for simultaneously, has good practicality.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

FIG. 2 is a schematic view of the structure of the inside of the wheel body of the present utility model.

FIG. 3 is a schematic view of the structure of the rotor blade of the present utility model in a down-moved state.

Fig. 4 is a schematic view of the structure of the blade lifting guide block of the present utility model.

Fig. 5 is a schematic view of the structure of the rotor blade of the present utility model.

FIG. 6 is a schematic structural view of a seal stud of the present utility model.

Fig. 7 is a schematic view of a partially enlarged structure at a of fig. 4 according to the present utility model.

In the figure, the correspondence between the component names and the drawing numbers is:

1. a runner body; 101. a buffer guide groove; 2. an upper connecting end column; 201. end column limiting connection plate; 3. a floating support; 301. an inner groove of the support block; 302. a support block tension spring; 303. the blade is connected with the screw hole; 4. a rotor blade; 401. blade lifting guide blocks; 402. a blade mounting through hole; 4021. a through hole end slot; 5. sealing the stud; 501. a rubber end; 5011. a rotary groove at the end; 6. sealing the inner ring; 601. and an inner ring through hole.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples.

Examples:

as shown in fig. 1 to 7:

the utility model provides a runner structure of an antiwear water turbine, which comprises a runner body 1; the upper end of the runner body 1 is connected with an upper connecting end post 2 through welding, and the middle of the upper connecting end post 2 is connected with an end post limiting connecting plate 201 through welding; the floating support blocks 3 are connected inside the rotating wheel body 1 in a sliding manner; the runner blades 4 are arranged everywhere, and the runner blades 4 are all arranged on the floating support 3 through the sealing studs 5; the sealing inner ring 6, the sealing inner ring 6 is movably connected to the sealing stud 5.

The rotating wheel body 1 is hollow, four buffer guide grooves 101 are formed in the outer wall of the rotating wheel body 1 in a penetrating mode, the buffer guide grooves 101 are rectangular-structure through grooves, the four buffer guide grooves 101 are parallel to each other, the rotating wheel body 1 is of a hollow structure, the floating supporting blocks 3 are connected in a sliding mode, and the floating supporting blocks 3 are guided.

The floating support block 3 is of a cylindrical structure, a support block inner groove 301 of a circular groove structure is formed in the middle of the upper surface of the floating support block 3, a support block tension spring 302 is fixedly connected to the inner bottom surface of the support block inner groove 301, the upper end of the support block tension spring 302 is fixedly connected with an end column limiting connection plate 201, eight blade connecting screw holes 303 are formed in the outer wall of the floating support block 3, blade lifting guide blocks 401 are connected to the inner ends of rotating wheel blades 4 through welding, the blade lifting guide blocks 401 penetrate through blade mounting through holes 402 of two round hole structures, and the blade lifting guide blocks 401 are rotationally connected with sealing studs 5; the outer end of the blade mounting through hole 402 is provided with a through hole end groove 4021, the through hole end groove 4021 is of a round groove structure, the rotating wheel blade 4 and the floating support block 3 are fixedly connected through the sealing stud 5, meanwhile, the blade lifting guide block 401 is slidably connected in the buffering guide groove 101, the guiding effect is achieved on the floating support block 3, the floating support block 3 is prevented from rotating inside the rotating wheel body 1, when the axial flow turbine is connected with water flow, the water flow downwards flows from the upper side of the rotating wheel body 1 to impact the rotating wheel blade 4, the rotating wheel blade 4 in an inclined state is enabled to rotate in the impact process of the rotating wheel blade 4, meanwhile, when the instantaneous impact force of the water flow is overlarge, the rotating wheel blade 4 can downwards move, the blade lifting guide block 401 downwards slides in the buffering guide groove 101, the floating support block 3 downwards presses the floating support block 302 in the process of downwards, the pressure is larger than the tension force of the support block 302, the floating support block 3 and the rotating wheel blade 4 downwards move downwards simultaneously to buffer the rotating wheel blade 4, and the instantaneous impact force of the rotating wheel blade 4 can be reduced.

The inner end of the sealing stud 5 is spirally connected with the blade connecting screw hole 303, the sealing stud 5 is rotationally connected with the blade mounting through hole 402, the outer end of the sealing stud 5 is fixedly connected with the rubber end 501, and an end rotating groove 5011 with a hexagonal structure is formed in the middle of the outer surface of the rubber end 501; the sealed inner circle 6 is made for the rubber material, and the outer fringe of sealed inner circle 6 outwards bends the processing, the inner circle through-hole 601 of round hole structure has been seted up to the centre of sealed inner circle 6, inner circle through-hole 601 closely sliding connection seal double-screw bolt 5, when inside monolithic blade takes place to damage in the hydraulic turbine, can take out runner body 1 alone, and dismantle the seal double-screw bolt 5 in the blade lift guide block 401 outside of damaging the blade, can demolish the blade that damages, and install new blade on floating branch piece 3 again through seal double-screw bolt 5, can realize changing alone of damaging the blade, rubber end 501 and the sealing performance of sealing the inner circle 6 setting can further increase hookup location.

Specific use and action of the embodiment:

in the utility model, firstly, under the normal state, the floating support block 3 is lifted upwards under the action of the support block tension spring 302, the floating support block 3 drags the runner blade 4 upwards, the blade lifting guide block 401 is positioned at the upper end in the buffer guide groove 101, when the axial flow turbine is connected with water flow, the water flow flows downwards from the upper part of the runner body 1 to impact the runner blade 4, in the process of impacting the runner blade 4, the runner blade 4 in an inclined state rotates to drive the runner body 1 to rotate, and meanwhile, when the instantaneous impact force of the water flow is overlarge, the runner blade 4 moves downwards, the blade lifting guide block 401 slides downwards in the buffer guide groove 101, the floating support block 3 is pressed downwards in the process of sliding downwards, the pressure is larger than the tension of the support block tension spring 302, the floating support block 3 and the runner blade 4 move downwards simultaneously, the effect of buffering the runner blade 4 is achieved, and the instantaneous impact force of the water flow on the runner blade 4 can be reduced; after the water turbine is used for a period of time, if the internal single blade in the water turbine is damaged, the rotating wheel body 1 can be independently taken out, the damaged blade can be removed by disassembling the sealing stud 5 on the outer side of the blade lifting guide block 401 of the damaged blade, and a new blade is reinstalled on the floating support block 3 through the sealing stud 5, so that the damaged blade can be independently replaced.

Claims

1. The utility model provides a wear-resisting hydraulic turbine runner structure which characterized in that: comprises a runner body (1); the upper end of the rotating wheel body (1) is connected with an upper connecting end post (2) through welding; the floating support block (3) is connected inside the rotating wheel body (1) in a sliding way; the rotating wheel blades (4) are arranged everywhere, and the rotating wheel blades (4) are all arranged on the floating support (3) through sealing studs (5); the sealing inner ring (6), the sealing inner ring (6) is movably connected to the sealing stud (5).

2. The antiwear hydraulic turbine runner structure of claim 1, wherein: the inside of the rotating wheel body (1) is hollow, four buffer guide grooves (101) are formed in the outer wall of the rotating wheel body (1) in a penetrating mode, the buffer guide grooves (101) are through grooves of rectangular structures, and the four buffer guide grooves (101) are parallel to each other.

3. The antiwear hydraulic turbine runner structure of claim 1, wherein: the middle of the upper connecting end post (2) is connected with an end post limiting connecting plate (201) through welding.

4. A turbine runner structure according to claim 3, wherein: the floating support block (3) is of a cylindrical structure, a support block inner groove (301) of a circular groove structure is formed in the middle of the upper surface of the floating support block (3), a support block tension spring (302) is fixedly connected to the inner bottom surface of the support block inner groove (301), the upper end of the support block tension spring (302) is fixedly connected with a terminal post limiting connecting plate (201), and eight blade connecting screw holes (303) are formed in the outer wall of the floating support block (3).

5. The antiwear hydraulic turbine runner structure of claim 4, wherein: the inner end of the runner blade (4) is connected with a blade lifting guide block (401) through welding, the blade lifting guide block (401) is provided with a blade installation through hole (402) with a two-position round hole structure in a penetrating mode, and the blade lifting guide block (401) is rotationally connected with the sealing stud (5).

6. The antiwear hydraulic turbine runner structure of claim 5, wherein: the outer end of the blade mounting through hole (402) is provided with a through hole end groove (4021), and the through hole end groove (4021) is of a round groove structure.

7. The antiwear hydraulic turbine runner structure of claim 6, wherein: the inner end spiral connection blade of sealed double-screw bolt (5) connects screw (303), and sealed double-screw bolt (5) rotates and connects blade installation through-hole (402), and the outer end fixedly connected with rubber end (501) of sealed double-screw bolt (5), has seted up hexagonal structured end spiral groove (5011) in the middle of rubber end (501) surface.

8. The antiwear hydraulic turbine runner structure of claim 1, wherein: the sealing inner ring (6) is made of rubber materials, the outer edge of the sealing inner ring (6) is bent outwards, an inner ring through hole (601) with a round hole structure is formed in the middle of the sealing inner ring (6), and the inner ring through hole (601) is tightly connected with the sealing stud (5) in a sliding mode.