CN2851629Y - Guide bearing structure for hydraulic generator - Google Patents

Abstract

The utility model discloses a guide bearing structure of a hydroelectric generator, which comprises a lower frame 1, a guide bush 2, and a bearing seat 3. The bearing seat 3 is fixed on the lower frame 1, and an obliquely upward parabola is set on the surface of the guide bush 2. The oil groove 6 and the back of the guide bearing bush 2 are connected to the bearing seat 3 through the spherical support 4, and a gasket set is arranged on the contact surface between the spherical support 4 and the bearing seat 3. In the utility model, an obliquely upward parabolic oil groove is provided on the surface of the guide bearing bush, and the support mode adopts reverse spherical rigid support, which improves the support rigidity, can adapt to the change of radial force under different working conditions, and improves the lubricating effect. The utility model has the advantages of simple structure, strong bearing capacity, strong adaptability to working conditions, small wear and the like.

Description

A guide bearing structure of a hydroelectric generator

technical field

The utility model relates to a guide bearing structure of a hydraulic generator.

Background technique

Since the hydro-generator is driven by a high-head impact water turbine, the water head changes greatly, and the hydro-turbine has the requirement of a single nozzle operation condition, and the radial load is large. Especially in the operating condition of a single nozzle, the radial force will have a large deflection angle, which has a particularly prominent impact on the water guide and down guide. In order to adapt to the different influences and requirements of different working conditions on the guide bearing, the structural design of the guide bearing is very elegant, and the parameters that affect the lubrication performance such as the support method and position of the pad, and the profile line all require a reasonable match.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a hydraulic generator guide bearing structure to meet the different requirements of different working conditions for the guide bearing, and is suitable for high-speed and large-capacity hydraulic generator sets.

The purpose of the invention of the utility model is achieved through the following technical solutions:

A guide bearing structure for a hydroelectric generator, comprising a lower frame, a guide bearing pad, and a bearing seat. Connected to the bearing housing through a spherical strut.

The guide bearing bush is a non-concentric elastic plastic bush to reduce the friction coefficient and improve the bearing capacity and adaptability. The guide bearing bush adopts a rigid reverse spherical support method to improve the support rigidity and adapt to the change of radial force under different working conditions. An oblique upward parabolic oil groove is provided on the guide pad surface of the guide bush to improve the lubrication effect.

A gasket set is arranged on the contact surface of the spherical support and the bearing seat to improve the contact performance.

It can be seen from the above description that in the guide bearing structure of a hydroelectric generator described in the utility model, an obliquely upward parabolic oil groove is set on the surface of the guide bearing pad, and the support method is a reverse spherical rigid support, which improves the support rigidity and can Adapt to the change of radial force under different working conditions and improve the lubrication effect. The utility model has the advantages of simple structure, strong bearing capacity, strong adaptability to working conditions, small wear and the like.

Description of drawings

Fig. 1 is a sectional view of a guide bearing structure of a hydroelectric generator.

Detailed ways

The technical scheme of the utility model is further described below in conjunction with the accompanying drawings: as shown in Figure 1, a guide bearing structure of a hydroelectric generator includes a lower frame 1, a guide bush 2, and a bearing seat 3, and the bearing seat 3 is fixed on the lower frame 1 , The surface of the guide bush 2 is provided with an obliquely upward parabolic oil groove 6, and the back of the guide bush 2 is connected with the bearing seat 3 through a spherical support 4.

A gasket set 5 is provided on the contact surface between the spherical support 4 and the bearing housing 3 .

The guide bush 2 is a non-concentric guide bush.

Claims (3)

1. Hydraulic generator pilot bearing structure, comprise lower bearing bracket (1), guide bearing block (2), bearing support (3), bearing support (3) is fixed on the lower bearing bracket (1), it is characterized in that: offer parabola oil duct (6) obliquely on guide bearing block (2) tiling, watt back of the body of guide bearing block (2) is connected with bearing support (3) by support pin of spherical end (4).

2. a kind of Hydraulic generator pilot bearing structure according to claim 1 is characterized in that: support pin of spherical end (4) is provided with shim pack (5) with the surface of contact of bearing support (3).

3. a kind of Hydraulic generator pilot bearing structure according to claim 1 is characterized in that: guide bearing block (2) is non-concentric type guide bearing block.