CN214997999U

CN214997999U - Mixed-flow water turbine with kinetic energy recovery draft tube

Info

Publication number: CN214997999U
Application number: CN202121044289.9U
Authority: CN
Inventors: 许康健; 何胜清; 田甜
Original assignee: Jiangsu Canon Machinery Manufacturing Co ltd
Current assignee: Jiangsu Canon Machinery Manufacturing Co ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-12-03
Anticipated expiration: 2031-05-17

Abstract

The utility model belongs to the technical field of hydraulic turbine equipment, and a mixed flow turbine with kinetic energy recovery draft tube is disclosed, including the bearing frame, the inside fixed mounting of bearing frame has the bearing, the inside fixed cup joint of bearing has the main shaft, the top of main shaft runs through bearing and bearing frame and extends to the top of bearing frame, the bottom of main shaft runs through the bearing and extends to the below and the fixedly connected with connecting axle of bearing. The utility model discloses a set up the main shaft, shrinkage tube and diffusion tube, and it is rotatory then to drive the connecting axle through the main shaft, and it is rotatory then to drive the dead lever through the fixed block to connect the axle, the dead lever then can drive runner crown, runner and runner lower ring are rotatory, and then make water accomplish the energy exchange, and can retrieve some rivers energy under the effect of diffusion tube when rivers go into in the tailrace, make some power of runner excess, promote whole equipment efficiency, the effect of energy difference around the runner has been increased.

Description

Mixed-flow water turbine with kinetic energy recovery draft tube

Technical Field

The utility model belongs to the technical field of hydraulic turbine equipment, specifically a mixed-flow water turbine with draft tube is retrieved to kinetic energy.

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.

At present, the use of hydraulic turbine can both satisfy daily demand basically, but the general rivers of current hydraulic turbine pass through the runner, accomplish the energy exchange back, rivers will follow the export limit outflow runner of runner, through the draft tube refluence to cooling tower water distribution pipe and play water spray head, for because cooling tower water turbine draft tube in the traditional meaning is straight tube section usually, only play and lead to cooling tower water distribution pipe and play water spray head with rivers, the loss of hydraulic turbine runner export area return water energy has been caused, and very easily cause the inside cavitation phenomenon reduction equipment whole life that produces of hydraulic turbine runner, consequently, need improve it.

Meanwhile, the existing cooling tower water turbine has poor sealing performance due to the gap between the runner blade and the volute, so that part of water flow is always between the blade and the volute when the cooling tower water turbine is used, and the diversion efficiency of the blade to the water flow is reduced, so that the cooling tower water turbine also needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above problem, the utility model provides a mixed-flow water turbine with kinetic energy recovery draft tube has the advantage that energy efficiency is high and the leakproofness is good.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a francis turbine with draft tube is retrieved to kinetic energy, includes the bearing frame, the inside fixed mounting of bearing frame has the bearing, the fixed cover in inside of bearing has connect the main shaft, the top of main shaft runs through bearing and bearing frame and extends to the top of bearing frame, the bottom of main shaft runs through the bearing and extends to the below and the fixedly connected with connecting axle of bearing, the bottom fixed mounting of bearing frame has the mounting panel, the bottom fixed mounting of mounting panel has the spiral case assembly, the bottom of connecting axle runs through bearing frame and mounting panel and extends to the inside and the fixed cover of spiral case assembly and has connect the fixed block, the bottom fixedly connected with dead lever of fixed block, the bottom fixedly connected with draft tube of spiral case assembly, the fixed intercommunication in bottom of draft tube has the shrink tube, the fixed intercommunication in bottom of shrink tube has the diffuser tube.

As an optimal technical scheme of the utility model, the right-hand member fixed mounting at mounting panel top has the spiral case pressure relief pipe, the bottom of spiral case pressure relief pipe runs through mounting panel and spiral case assembly and extends to the inside of spiral case assembly and communicate mutually with the inner chamber of spiral case assembly, because the pressure release of water in the spiral case assembly then can be realized to the setting of spiral case pressure relief pipe, prevents that the cavity internal pressure is too big.

As an optimal technical scheme of the utility model, the fixed cover that has cup jointed of surface of dead lever, the top and the bottom of fixed cover all with the inside swing joint of spiral case assembly, because the setting of fixed cover has then made things convenient for operating personnel to install the runner crown fixedly.

As an optimal technical scheme of the utility model, the fixed surface of fixed cover is connected with and is located the inside runner crown of spiral case assembly, the top of runner crown and the top swing joint of spiral case assembly inner chamber because the setting of runner crown then can play sealed effect when rotating the runner to improve the efficiency of water circulation.

As a preferred technical scheme of the utility model, the bottom fixedly connected with runner of runner coping, the bottom fixedly connected with runner lower ring of runner, the bottom of runner lower ring and the bottom fixed connection of runner coping inner chamber, because the setting of runner lower ring then further improved the runner when rotating to water-stop seal.

As an optimal technical scheme of the utility model, the bottom fixed mounting of spiral case assembly has the support frame, the fixed cover in bottom of dead lever has connect the position and the fixed positioning bolt of cover below, because positioning bolt's setting has then made things convenient for operating personnel to install spiral case assembly fixedly.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a set up shrinkage tube and diffusion tube, it is rotatory to drive the connecting axle through the main shaft, and can reach the rotatory effect of drive dead lever through the fixed block after the connecting axle rotates, it then can drive the runner crown on hand to change when the dead lever, runner and runner lower ring are rotatory, and then accomplish the energy exchange through water, and can retrieve some rivers energy under the effect of diffusion tube when rivers go into in the tail water pipe, make some power more than the runner, promote whole equipment efficiency, that is to say that this design can make runner department energy reduce to some extent, the effect of energy difference around the runner has been increased.

2. The utility model discloses a set up fixed cover, runner crown, runner and runner lower ring, the rotatory effect of fixed cover rotation of drive then can be reached through the rotation of dead lever, and the rotation of fixed cover then can realize driving the rotatory purpose of runner crown, and can not only reach the rotatory purpose of drive runner through runner crown, but also can realize and the spiral case assembly inner chamber between the leakproofness, and the setting through the runner lower ring then can further strengthen the leakproofness between runner and the spiral case assembly inner chamber, thereby holistic sealing performance between spiral case assembly and the runner has been improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the impeller of the present invention;

FIG. 3 is a schematic structural view of the draft tube of the present invention;

FIG. 4 is a schematic view of a portion of the enlarged structure at A in FIG. 1;

fig. 5 is a partially enlarged structural view at B in fig. 1.

In the figure: 1. a bearing seat; 2. a bearing; 3. a main shaft; 4. a connecting shaft; 5. mounting a plate; 6. a volute assembly; 7. a fixed block; 8. fixing the rod; 9. fixing a sleeve; 10. crown mounting of the rotating wheel; 11. a rotating wheel; 12. a rotating wheel lower ring; 13. positioning the bolt; 14. a draft tube; 15. a shrink tube; 16. a diffuser tube; 17. a volute pressure relief pipe; 18. a support frame.

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.

As shown in fig. 1 to 5, the utility model provides a mixed-flow water turbine with kinetic energy recovery draft tube, which comprises a bearing seat 1, a bearing 2 is fixedly installed inside the bearing seat 1, a main shaft 3 is fixedly sleeved inside the bearing 2, the top of the main shaft 3 penetrates through the bearing 2 and the bearing seat 1 and extends to the upper side of the bearing seat 1, the bottom of the main shaft 3 penetrates through the bearing 2 and extends to the lower side of the bearing 2 and is fixedly connected with a connecting shaft 4, a mounting plate 5 is fixedly installed at the bottom of the bearing seat 1, a volute assembly 6 is fixedly installed at the bottom of the mounting plate 5, the bottom of the connecting shaft 4 penetrates through the bearing seat 1 and the mounting plate 5 and extends to the inside of the volute assembly 6 and is fixedly sleeved with a fixed block 7, a fixed rod 8 is fixedly connected at the bottom of the fixed block 7, a draft tube 14 is fixedly connected at the bottom of the volute assembly 6, a contraction tube 15 is fixedly communicated at the bottom of the draft tube 14, the bottom of the contraction tube 15 is fixedly communicated with a diffusion tube 16.

The volute pressure relief pipe 17 is fixedly mounted at the right end of the top of the mounting plate 5, the bottom of the volute pressure relief pipe 17 penetrates through the mounting plate 5 and the volute assembly 6, extends to the inside of the volute assembly 6 and is communicated with the inner cavity of the volute assembly 6, and water can circulate in the volute assembly 6 due to the arrangement of the volute pressure relief pipe 17.

Wherein, the fixed cover 9 that has cup jointed of the outer fixed surface of dead lever 8, the top and the bottom of fixed cover 9 all with the inside swing joint of spiral case assembly 6, because the setting of fixed cover 9 has then made things convenient for operating personnel to install the runner crown 10 of required quantity fixedly.

Wherein, the fixed surface fixedly connected with of fixed cover 9 is located the inside runner crown 10 of spiral case assembly 6, and the top of runner crown 10 and the top swing joint of 6 inner chambers of spiral case assembly, owing to runner crown 10's setting then can play sealed effect when rotating runner 11 to improve the efficiency of water circulation.

Wherein, the bottom fixedly connected with runner 11 of runner crown 10, the bottom fixedly connected with runner lower ring 12 of runner 11, the bottom of runner lower ring 12 and the bottom swing joint of runner crown 10 inner chamber, because the setting of runner lower ring 12 then has further improved the water tightness when runner 11 rotates.

Wherein, the bottom of the volute assembly 6 is fixedly provided with a support frame 18, the bottom of the fixed rod 8 is fixedly sleeved with a positioning bolt 13 positioned below the fixed sleeve 9, and the positioning bolt 13 is convenient for an operator to install and fix the volute assembly 6.

The utility model discloses a theory of operation and use flow:

when the purpose of energy recovery needs to be realized, the connecting shaft 4 can be driven to rotate under the rotation of the main shaft 3, the fixing rod 8 can be driven to rotate through the fixing block 7 after the connecting shaft 4 rotates, the fixing sleeve 9 can be driven to rotate through the rotation of the fixing rod 8, the rotating wheel 11 can be driven to rotate through the runner crown 10 after the fixing sleeve 9 rotates, and the purpose of energy exchange of water flow through the runner can be realized after the rotating wheel 11 rotates.

And can then drive runner crown 10 rotatory through fixed cover 9 after the dead lever 8 is rotatory, and the rotation of runner crown 10 then can drive runner 11 and runner lower ring 12 and rotate simultaneously, because the setting of runner crown 10 and runner lower ring 12 then can improve the leakproofness between runner 11 and the 6 inner chambers of spiral case assembly, and then improved holistic sealed effect to efficiency when the realization improvement rivers accomplish the energy exchange through the runner.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a francis turbine with tail pipe is retrieved to kinetic energy, includes bearing frame (1), its characterized in that: the utility model discloses a bearing support, including bearing frame (1), the inside fixed mounting of bearing frame (1) has bearing (2), the inside fixed main shaft (3) of having cup jointed of bearing (2), the top of main shaft (3) runs through bearing (2) and bearing frame (1) and extends to the top of bearing frame (1), the bottom of main shaft (3) runs through bearing (2) and extends to the below of bearing (2) and fixedly connected with connecting axle (4), the bottom fixed mounting of bearing frame (1) has mounting panel (5), the bottom fixed mounting of mounting panel (5) has spiral case assembly (6), the bottom of connecting axle (4) runs through bearing frame (1) and mounting panel (5) and extends to the inside of spiral case assembly (6) and the fixed cover has been cup jointed fixed block (7), the bottom fixedly connected with dead lever (8) of fixed block (7), the bottom fixedly connected with draft tube (14) of spiral case assembly (6), the bottom of the draft tube (14) is fixedly communicated with a contraction tube (15), and the bottom of the contraction tube (15) is fixedly communicated with a diffusion tube (16).

2. A francis turbine with a kinetic energy recovery draft tube according to claim 1, wherein: the volute pressure relief pipe (17) is fixedly mounted at the right end of the top of the mounting plate (5), and the bottom of the volute pressure relief pipe (17) penetrates through the mounting plate (5) and the volute assembly (6), extends to the inside of the volute assembly (6) and is communicated with the inner cavity of the volute assembly (6).

3. A francis turbine with a kinetic energy recovery draft tube according to claim 1, wherein: the outer surface of the fixed rod (8) is fixedly sleeved with a fixed sleeve (9), and the top and the bottom of the fixed sleeve (9) are both movably connected with the inside of the volute assembly (6).

4. A francis turbine with a kinetic energy recovery draft tube according to claim 3, wherein: the outer surface of the fixed sleeve (9) is fixedly connected with a runner crown (10) positioned inside the volute assembly (6), and the top of the runner crown (10) is movably connected with the top of the inner cavity of the volute assembly (6).

5. The francis turbine of claim 4, wherein the draft tube has a kinetic energy recovery draft tube, and the francis turbine further comprises: the bottom fixedly connected with runner (11) of runner crown (10), the bottom fixedly connected with runner lower ring (12) of runner (11), the bottom of runner lower ring (12) and the bottom fixed connection of runner crown (10) inner chamber.

6. A francis turbine with a kinetic energy recovery draft tube according to claim 1, wherein: the bottom of the volute assembly (6) is fixedly provided with a support frame (18), and the bottom of the fixed rod (8) is fixedly sleeved with a positioning bolt (13) positioned below the fixed sleeve (9).