CN217582354U

CN217582354U - Positive and negative thrust runner plate structure of hydraulic generator

Info

Publication number: CN217582354U
Application number: CN202221243533.9U
Authority: CN
Inventors: 李勇; 王文权; 何晓娥
Original assignee: Chongqing Water Turbine Works Co Ltd
Current assignee: Chongqing Water Turbine Works Co Ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-10-14
Anticipated expiration: 2032-05-23

Abstract

The utility model relates to a hydraulic generator unit installation technical field discloses a hydraulic generator's positive and negative thrust runner plate structure, including main shaft and thrust tile, be connected with positive thrust runner plate and reverse thrust runner plate on the main shaft, its characterized in that, positive thrust runner plate and reverse thrust runner plate are the split structure, and the staple bolt is in respectively on the main shaft, connect through the polylith gusset between positive thrust runner plate and the reverse thrust runner plate, have the main shaft workable, and the advantage that machining precision is high.

Description

Positive and negative thrust runner plate structure of hydraulic generator

Technical Field

The utility model relates to a hydraulic generator unit installs technical field, specifically is a hydraulic generator's positive and negative thrust runner plate structure.

Background

The forward and reverse thrust runner plates are used as bearing parts of a bulb tubular unit, and mainly bear forward and reverse axial water thrust caused by water power of the unit, and the runner plates also play a role in controlling the unit axis to be good and bad, and are of great importance to safe and stable operation of the unit.

As shown in the attached drawing 1, the traditional positive and negative thrust runner plate structure is formed by directly processing on the main shaft, the positive and negative thrust runner plate structure is a concave step, the axial two end surfaces of the concave step are taken as the stress surfaces of the positive and negative thrust runner plate, the thrust tile is installed between the positive and negative thrust runner plates, therefore, a large diameter of the main shaft is needed, the positive and negative thrust runner plate can be processed, the thrust tile is needed to be installed between the positive and negative thrust runner plates, the outer diameter of the main shaft forge piece is increased, the production cost is increased, the requirement of the mirror surface processing reaches the tolerance requirement of 0.02mm, and the deeper the concave step on the main shaft, the larger the processing difficulty is.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hydraulic generator's positive and negative thrust runner plate structure to it is big to solve the main shaft processing degree of difficulty, and the problem that machining precision is low.

In order to achieve the above object, the utility model provides a hydraulic generator's positive and negative thrust runner plate structure, including main shaft and thrust tile, be connected with positive thrust runner plate and reverse thrust runner plate on the main shaft, a serial communication port, positive thrust runner plate and reverse thrust runner plate are the split structure, and the staple bolt is in respectively on the main shaft, connect through the polylith gusset between positive thrust runner plate and the reverse thrust runner plate.

In order to prevent the positive thrust runner plate and the negative thrust runner plate from moving on the main shaft, a spigot is arranged on the main shaft, and the positive thrust runner plate and the negative thrust runner plate are clamped and limited through the spigot.

In order to facilitate installation and connection, the split structures of the positive thrust runner plate and the negative thrust runner plate are respectively connected through seam-jointing plates.

In order to facilitate the transmission of the circumferential torsion, the main shaft is connected with the positive thrust runner plate and the negative thrust runner plate through keys, the keys are partially embedded in the main shaft, and the keys are combined on the positive thrust runner plate and/or the negative thrust runner plate through countersunk bolts.

To facilitate mounting of the thrust shoes, the thrust shoes are located outboard of the positive and negative thrust runner plates.

In order to enhance the connection strength of the positive thrust runner plate and the reverse thrust runner plate, the positive thrust runner plate and the reverse thrust runner plate are connected through an upper rib plate and a lower rib plate in a reinforcing mode.

In order to facilitate the installation of the positive thrust runner plate and the negative thrust runner plate, the middle part of the upper rib plate is provided with a lifting hole.

Has the advantages that: the forward and reverse thrust runner plate of the utility model adopts the split structure hoop to be positioned in the spigot of the main shaft, so as to avoid deep processing on the main shaft, thereby reducing the production cost, and the forward and reverse thrust runner plates are respectively processed independently, so that the machining is easier from the manufacturing angle, the machining is not interfered by the main shaft, the size requirement of the main shaft is reduced, and the machining precision of the runner plate surface is more favorably ensured; the thrust bearing bush of the structure is more convenient to install, does not need to be transversely hoisted into the main shaft, is directly installed on the side face of the forward and reverse thrust runner plate, and reduces the construction difficulty.

Drawings

FIG. 1 is a schematic view of a conventional mounting structure;

fig. 2 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 3 is a schematic view of a portion of the structure of FIG. 1;

FIG. 4 is a schematic diagram of a thrust runner.

Reference numerals are as follows: 1. a main shaft; 2. a thrust pad; 3. an upper clamp ring; 4. a lower clamp ring; 5. stopping the opening; 6. a positive thrust runner plate; 7. a thrust runner plate; 8. a rib plate is arranged; 9. a lower rib plate; 10. a mounting base; 11. an upper petal; 12. a lower valve; 13. a seaming plate; 14. a key; 15. and (5) lifting the hole.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the drawings, but the present invention is not limited to these embodiments, and the modifications made to the present invention are also within the scope of the claims of the present invention without departing from the principles of the present invention.

Example 1

As shown in fig. 2-4, a forward and reverse thrust runner structure of a hydro-generator includes a main shaft 1 and thrust shoes 2, an upper clamp ring 3 and a lower clamp ring 4 are processed on the main shaft 1, a seam allowance 5 is formed between the upper clamp ring 3 and the lower clamp ring 4, a forward thrust runner 6 and a reverse thrust runner 7 are connected on the main shaft 1, the forward thrust runner 6 and the reverse thrust runner 7 are split structures and respectively hooped in the seam allowance 5, the upper clamp ring 3 and the lower clamp ring 4 respectively prop against the outer side surfaces of the forward thrust runner 6 and the reverse thrust runner 7 to realize clamping and limiting, the depth of the seam allowance 5 is processed according to the thrust magnitude, the deeper the thrust is, the deeper the forward thrust runner 6 and the reverse thrust runner 7 are connected and fixed by an upper rib plate 8 and a lower rib plate 9, and the two thrust shoes 2 are respectively located at the outer sides of the forward thrust runner 6 and the reverse thrust runner 7 and are connected on a mounting base 10 by bolts.

The positive thrust mirror plate 6 and the reverse thrust mirror plate 7 are of split structures and comprise an upper lobe 11 and a lower lobe 12, seam plates 13 are arranged at two ends of the upper lobe 11 and the lower lobe 12, the two seam plates 13 are oppositely arranged and are fixedly connected through 3 bolts, and the positive thrust mirror plate 6 and the reverse thrust mirror plate 7 are hooped on the main shaft 1.

The main shaft 1 is connected with the positive thrust runner 6 and the negative thrust runner 7 through a key 14, the key 14 is fastened on the positive thrust runner 6 through a countersunk head bolt, and the key 14 is partially embedded in the main shaft 1 for transmitting circumferential torque.

And the middle part of the upper rib plate 8 is provided with a lifting hole 15 for mounting a lifting lug, so that the positive thrust runner plate 6 and the negative thrust runner plate 7 can be lifted conveniently and simultaneously.

The positive thrust mirror plate 6 and the reverse thrust mirror plate 7 are of an upper split structure and a lower split structure and are arranged in the seam allowance 5 of the spindle 1 through hoops, the seam allowance 5 is easy to machine, deep machining on the spindle 1 is avoided, the deeper the depth is, the higher the difficulty is, the positive thrust mirror plate 6 and the reverse thrust mirror plate 7 are not integrated with the spindle 1, the production cost is reduced, the positive thrust mirror plate 7 and the reverse thrust mirror plate 7 are machined independently, the machining is easier from the manufacturing angle and is not interfered by the spindle 1, the mirror surface machining requirement can reach the tolerance requirement of 0.02mm, and the precision is improved.

Claims

1. The utility model provides a hydraulic generator's positive and negative thrust runner plate structure, includes main shaft (1) and thrust tile (2), be connected with positive thrust runner plate (6) and reverse thrust runner plate (7) on main shaft (1), its characterized in that, positive thrust runner plate (6) and reverse thrust runner plate (7) are the split structure, and the staple bolt is in respectively on main shaft (1), connect through the polylith gusset between positive thrust runner plate (6) and the reverse thrust runner plate (7).

2. The forward and reverse thrust runner structure of a hydro-generator according to claim 1, wherein: the main shaft (1) is provided with a spigot (5), and the positive thrust runner plate (6) and the negative thrust runner plate (7) are clamped and limited through the spigot (5).

3. The forward and reverse thrust runner plate structure of a hydro-generator according to claim 2, wherein: the split structures of the positive thrust runner plate (6) and the reverse thrust runner plate (7) are respectively connected through a seaming plate (13).

4. The forward and reverse thrust runner structure of a hydro-generator according to any one of claims 1 to 3, wherein: the main shaft (1) is connected with the positive thrust runner plate (6) and the negative thrust runner plate (7) through a key (14), the key (14) is partially embedded in the main shaft (1), and the key (14) is fastened on the positive thrust runner plate (6) and/or the negative thrust runner plate (7) through a countersunk head bolt.

5. The forward and reverse thrust runner structure of a hydro-generator according to claim 4, wherein: the thrust pads (2) are positioned at the outer sides of the positive thrust runner plate (6) and the negative thrust runner plate (7).

6. The forward and reverse thrust runner structure of a hydraulic generator according to claim 1 or 5, wherein: the positive thrust runner plate (6) and the reverse thrust runner plate (7) are connected in a reinforcing mode through an upper rib plate (8) and a lower rib plate (9).

7. The forward and reverse thrust runner structure of a hydro-generator according to claim 6, wherein: and a lifting hole (15) is formed in the middle of the upper rib plate (8).