CN220059784U - Radial limit structure of hydroelectric set thrust tile - Google Patents

Abstract

The utility model provides a radial limit structure of a thrust tile of a hydroelectric generating set, which is characterized in that: the novel bolt pin assembly comprises a support tile, wherein a toothed limiting piece is arranged at the top of the support tile, the toothed limiting piece comprises a limiting block arranged between the support tiles, a plurality of limiting teeth fixedly arranged at two sides of the limiting block, a second counter bore which is arranged on the limiting block and corresponds to the first counter bore, and a thrust tile limiting block which is arranged at the tail end of the limiting block and is attached to the side wall of the thrust tile, which is close to the center of a circle, wherein the limiting teeth are embedded with grooves on the top surface of the support tile, and the bolt pin assembly sequentially penetrates through the second counter bore and the first counter bore. Through setting up dentate spacing piece between holding in palm the tile, can strengthen the radial spacing between thrust tile and the holding in the palm the tile, better guaranteed that thrust tile and holding in the palm do not produce radial relative drunkenness between the tile, avoided holding in the palm simultaneously and moved in the tile operation in-process, in addition, through promoting thrust tile radial limit structure and radial spacing intensity, can prevent better that the mirror board from expanding with heat and driving thrust tile and move in the time of shrinkage with cold.

Description

Radial limit structure of hydroelectric set thrust tile

Technical Field

The utility model relates to the field of thrust tile limiting, in particular to a radial limiting structure of a thrust tile of a hydroelectric generating set.

Background

The thrust tile is an important component of the hydroelectric generating set and is used for bearing the load of the rotating part of the set. The existing thrust tile limit structure at present is: as shown in fig. 1-2, the thrust tile 5 is placed above the support tile 3, the support tile 3 is placed above the spring beam 4, the spring beam 4 is placed on the base ring 1, the circumference of the support tile 3 is limited by the spacing blocks 2 on two sides, the spacing blocks 2 are connected with the base ring 1 through the bolt pin assemblies 7, and a certain gap is kept between the spacing blocks 2 and the circumference of the support tile 3, so that the thrust tile 5 can freely float to a certain extent, and the thrust tile 5 is prevented from rotating along with the mirror plate; the thrust tile 5 and the support tile 3 are radially limited and mainly composed of three radial baffles, the three baffles are respectively arranged on the outer side of the foundation ring 1, the outer side of the support tile 3 and the inner side of the foundation ring 1 through bolts, the three baffles are radially connected with the thrust tile 5, the support tile 3 and the foundation ring 1, a certain radial gap is required to be reserved between the three baffles and the thrust tile 5 and the support tile 3 after all the baffles are arranged, the thrust tile 5 can move freely to a certain extent, and blocking is avoided.

However, after the vertical hydroelectric generating set runs for a long time, the thrust tile is found to have an inward movement phenomenon, the inward movement amount can reach 20mm, the deformation condition of the original thrust tile limit baffle is checked, the condition is extremely serious for the deducing bearing of the spring beam supporting structure, the thrust tile is easy to be blocked when the set runs, the self-adjusting function of the spring beam of the thrust tile is invalid, the stress of the thrust tile is uneven, and great hidden danger is brought to the safe and stable running of the set. The analysis is mainly due to the fact that the structural strength of the original thrust tile stop block is insufficient, and the phenomenon of expansion caused by heat and contraction caused by cold of the mirror plate drives the thrust tile to move radially after the shutdown. Aiming at the problem, the radial limiting structure of the thrust tile of the hydroelectric generating set is provided for solving the problem.

Disclosure of Invention

The utility model mainly aims to provide a radial limiting structure of a thrust tile of a hydroelectric generating set, and provides a radial limiting device of the thrust tile, so that the thrust tile is better limited in the radial direction, and the problem of inward movement of the thrust tile is avoided.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a radial limit structure of hydroelectric set thrust tile, includes the foundation ring, and the top of foundation ring has set gradually the ring body of constituteing by a plurality of spring bundle, holds in the palm tile and thrust tile, wherein holds in the palm and set up the spacer block between the tile, and the spacer block passes through bolt pin subassembly and is connected with the foundation ring, is equipped with the first counter bore that supplies bolt pin subassembly to pass on the spacer block, characterized by: the novel bolt pin assembly comprises a support tile, wherein a toothed limiting piece is arranged at the top of the support tile, the toothed limiting piece comprises a limiting block arranged between the support tiles, a plurality of limiting teeth fixedly arranged at two sides of the limiting block, a second counter bore which is arranged on the limiting block and corresponds to the first counter bore, and a thrust tile limiting block which is arranged at the tail end of the limiting block and is attached to the side wall of the thrust tile, which is close to the center of a circle, wherein the limiting teeth are embedded with grooves on the top surface of the support tile, and the bolt pin assembly sequentially penetrates through the second counter bore and the first counter bore.

In the preferred scheme, the height of the limiting block and the limiting teeth is not higher than the surface height of the riding tile.

In the preferred scheme, be equipped with radial clearance between spacing tooth and the groove of the top surface of support tile, be equipped with radial clearance between thrust tile stopper and the lateral wall of thrust tile.

In a preferred scheme, the bottom of the second counter bore is provided with an extension pipe extending into the first counter bore.

In the preferred scheme, the thrust tile limiting block is T-shaped.

The utility model provides a radial limiting structure of a thrust tile of a hydroelectric generating set, which can enhance the radial limiting between the thrust tile and the support tile by arranging a toothed limiting piece between the support tiles, better ensure that no radial relative movement occurs between the thrust tile and the support tile, and simultaneously avoid the inward movement in the operation process of the support tile.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a top plan view of a prior art portion of a structure of the present utility model;

FIG. 2 is a block diagram of a prior art spacer block installation of the present utility model;

FIG. 3 is a view of the installation structure of the toothed stopper of the present utility model;

FIG. 4 is a block diagram of a toothed limiter of the present utility model;

FIG. 5 is a cross-sectional view of the tooth-like spacing member of the present utility model;

FIG. 6 is a front view of the tooth-like spacing member of the present utility model;

FIG. 7 is a top view of the tooth limiter mounting arrangement of the present utility model;

in the figure: a base ring 1; a spacer block 2; a support tile 3; a spring bundle 4; a thrust shoe 5; a toothed stopper 6; a bonding sheet 601; a stopper 602; spacing teeth 604; a second counterbore 605; an extension tube 606; bolt pin assembly 7.

Detailed Description

Example 1

As shown in fig. 3-7, the radial limit structure of the thrust tile of the hydroelectric generating set is added on the original existing structure, the radial limit structure comprises a foundation ring 1, the top of the foundation ring 1 is sequentially provided with a ring body composed of a plurality of spring bundles 4, support tiles 3 and thrust tiles 5, a spacer block 2 is arranged between the support tiles 3, the spacer block 2 is connected with the foundation ring 1 through a bolt pin assembly 7, a first counter bore for the bolt pin assembly 7 to pass through is arranged on the spacer block 2, a toothed limit piece 6 positioned at the top of the spacer block 2 is arranged between the support tiles 3, the toothed limit piece 6 comprises a limit block 602 arranged between the support tiles 3, a plurality of limit teeth 604 fixedly arranged on two sides of the limit block 602, a second counter bore 605 arranged on the limit block 602 and corresponding to the first counter bore, and a thrust tile 601 fixedly arranged at the tail end of the limit block 602 and attached to the side wall of the thrust tile 5 close to the center, wherein the limit teeth 604 are mutually embedded with grooves on the top surface of the support tiles 3, the bolt pin assembly 7 sequentially penetrates through the second counter bore 605 and the first counter bore, so that the toothed limit piece 6 and the support tiles 6 are fixed on the support tiles 3 by the bolt pin assembly 7, and the radial limit tile 2 are prevented from moving radially and simultaneously, the radial limit tile 5 is prevented from being further moving to the base tile 3 and the opposite to the limit tile 5, and the radial limit tile is prevented from being further moving to the limit tile 5 and the radial limit tile is relatively moved to the base tile 1.

It should be noted that the toothed stopper 6 is integrally formed

In a preferred embodiment, the height of the limiting block 602 and the limiting teeth 604 is not higher than the surface height of the supporting shoe 3, and in this embodiment, the height of the limiting block 602 and the limiting teeth 604 is the same as the surface height of the supporting shoe 3.

In the preferred scheme, be equipped with radial clearance between spacing tooth 604 and the groove of the top surface of support tile 3, the radial width of fit tooth 604 is slightly less than the radial width of support tile 3 groove, is equipped with radial clearance between thrust tile stopper 601 and the lateral wall of thrust tile 5 to guarantee thrust tile 5 can free floating to a certain extent.

In the preferred scheme, the bottom of second counter bore 605 is provided with extension pipe 606 that extends to in the first counter bore, and extension pipe 606 and stopper 602 are integrated into one piece, and the external diameter of extension pipe 606 is slightly less than the internal diameter of the upper portion hole of first counter bore, and the internal diameter of extension pipe 606 is the same with the lower part hole of first counter bore and second counter bore 605 to insert in the first counter bore through extension pipe 606, make the connection between dentate stopper 6 and the spacer 2 more stable accurate, further improve radial spacing effect.

In a preferred embodiment, the thrust tile limiting block 601 has a structure of "T" extending upward, so as to perform interference limiting on two adjacent thrust tiles 5.

It should be noted that, the shape of the limiting teeth 604 is adapted to the groove on the top surface of the supporting tile 3, and the shape of the thrust tile limiting block 601 is adapted to the side wall of the thrust tile 5 near the center of the circle.

The above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the scope of the present utility model should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.

Claims (5)

1. The utility model provides a radial limit structure of hydroelectric set thrust tile, including basic ring (1), the top of basic ring (1) has set gradually the ring body of constituteing by a plurality of spring bundle (4), support tile (3) and thrust tile (5), wherein holds in the palm and set up spacer block (2) between tile (3), spacer block (2) are connected with basic ring (1) through bolt pin subassembly (7), are equipped with the first counter bore that supplies bolt pin subassembly (7) to pass on spacer block (2), characterized by: a toothed limiting piece (6) positioned at the top of the spacing block (2) is arranged between the supporting tiles (3);

the toothed limiting piece (6) comprises limiting blocks (602) arranged between the supporting tiles (3), a plurality of limiting teeth (604) fixedly arranged on two sides of the limiting blocks (602), second counter bores (605) which are formed in the limiting blocks (602) and correspond to the first counter bores, and thrust tile limiting blocks (601) which are arranged at the tail ends of the limiting blocks (602) and are attached to the side walls, close to the center of the circle, of the thrust tiles (5), wherein the limiting teeth (604) are embedded with grooves on the top surfaces of the supporting tiles (3), and the bolt pin assemblies (7) sequentially penetrate through the second counter bores (605) and the first counter bores.

2. The radial limit structure of a thrust tile of a hydroelectric generating set according to claim 1, wherein the radial limit structure is characterized in that: the height of the limiting block (602) and the limiting teeth (604) is not higher than the surface height of the riding tile (3).

3. The radial limit structure of a thrust tile of a hydroelectric generating set according to claim 2, characterized in that: radial gaps are arranged between the limiting teeth (604) and grooves on the top surface of the supporting tile (3), and radial gaps are arranged between the thrust tile limiting blocks (601) and the side walls of the thrust tiles (5).

4. The radial limit structure of a thrust tile of a hydroelectric generating set according to claim 1, wherein the radial limit structure is characterized in that: the bottom of the second counterbore (605) is provided with an extension tube (606) extending into the first counterbore.

5. The radial limiting structure of a thrust tile of a hydroelectric generating set according to any one of claims 1 to 4, wherein: the thrust tile limiting block (601) is T-shaped.