Nuclear main pump water lubricated composite material thrust bearing

Abstract

The invention discloses a water-lubricated composite material thrust bearing of a nuclear main pump, which comprises a stainless steel tile base and an engineering plastic layer. The stainless steel tile base has a concave-convex surface connected to the engineering plastic layer, and the concave-convex surface and the engineering plastic layer are composited by thermoplastic molding. For forming, the ratio between the area of ​​the concave-convex surface and the area of ​​the orthographic projection of the concave-convex surface on the stainless steel tile base is 1.2-2. The concavo-convex surface of the present invention and the engineering plastic layer are combined by the concavity and convexity of the concavo-convex surface, and the unique cohesiveness of the rough surface and the engineering plastic layer after melting to form a composite material thrust bearing with reliable physical connection as one, which can play Metals and non-metals have their own advantages, which can greatly reduce the thickness of the engineering plastic layer and improve the load-carrying capacity. Under the influence of pressure and temperature during operation, the bearing size still has good stability, which is more conducive to establishing a stable and safe lubrication. The water film is a new type of water-lubricated composite material thrust bearing that is anti-nuclear radiation, safe and reliable.

Description

technical field [0001] The invention relates to a water-lubricated composite material thrust bearing, in particular to a nuclear main pump water-lubricated composite material thrust bearing. The products are mainly suitable for the bearings of circulating pumps (nuclear main pumps) that drive coolant in the nuclear island primary circuit system of nuclear power plants in nuclear radiation conditions, and are also used for supporting parts of various rotating machinery that bear thrust, such as hydroelectric units, water pumps, speed reducers, etc. It is also suitable for oil lubrication, especially in high temperature and high speed working conditions. Background technique [0002] At present, the primary circuit coolant circulation pump of the nuclear island of a nuclear power plant (referred to as the nuclear main pump) is the key equipment of the nuclear power plant. The nuclear main pump plays a vital role in the operation and safety of the entire nuclear power plant, an...

AI Technical Summary

Problems solved by technology

The structure is installed and positioned through the clamping groove on the plane of the steel tile block, and is fastened with screws. Since this structure is assembled and installed by multi-layer structures, the used fastening screws and bearings are loose during long-term operation. Defects such as falling off and unstable connection increase the number of accident points, so it brings safety hazards to the operation of the nuclear main pump

[0005] Today, nuclear power is gradually developing towards large-capacity generator sets. The existing technology is no longer suitable for the use of high-power nuclear main pumps. The bearings of nuclear main pumps have become the bottleneck in the development of large-capacity nuclear power equipment manufacturing.

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