Water lubrication composite thrust bearing of nuclear main pump

Abstract

The invention discloses a water lubrication composite thrust bearing of a nuclear main pump. The water lubrication composite thrust bearing comprises a stainless steel tile base and an engineering plastic layer. The stainless steel tile base is provided with a concave-convex face connected with the engineering plastic layer. The concave-convex face and the engineering plastic layer are compositely molded through thermoplastic mould pressing. The specific value of the area of the concave-convex face to the area of the orthographic projection of the concave-convex face on the stainless steel tile base ranges from 1.2 to 2. The concave-convex face and the engineering plastic layer are combined through a concave face and a convex face of the concave-convex face and the specific bonding property obtained after fusion of a rough face and the engineering plastic layer, and the composite thrust bearing capable of being physically connected into a whole is formed. Respective advantages of metal and nonmetal can be brought into play, so that the thickness of the engineering plastic layer can be greatly reduced, and the bearing capability is improved; the size of the bearing still has good stability under the effect of pressure and temperature during running; a stable safety lubrication water film can be easily built; and the water lubrication composite thrust bearing is a novel water lubrication composite thrust bearing resistant to 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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