Cyclic silicon resin seal coating

Abstract

The invention relates to a wearable seal coating material, in particular to a cyclic silicon resin seal coating used for an industrial centrifugal compressor. The cyclic silicon resin seal coating comprises the following components in percentage by weight: 65-80% of cyclic silicon resin, 15-25% of filling material A and 5-10% of filling material B, wherein the filling material A is one or more than two of polyether ether ketone, polybenzoate and polytetrafluoroethylene, and the granularity is 50-100 microns; when more than two of polyether ether ketone, polybenzoate and polytetrafluoroethylene are mixed, the mixing ratio can be an any ratio; the filling material B is one or more than two of hexagonal boron nitride, graphite and bentonite, and the granularity is 20-50 microns; and when more than two of hexagonal boron nitride, graphite and bentonite are mixed, the mixing ratio can an any ratio. The invention effectively increases the scraping property of the coating, can control and regulate the hardness of the coating and has self lubricating property so that the hardness of the coating can reach the range applicable to scraping, the abrasion of vanes is reduced, the wearable property of the coating is increased, and the invention can ensure that contact wearing can not endanger a rotor.

Description

technical field

[0001] The invention relates to an abradable sealing coating material, in particular to a ring silicone resin sealing coating for industrial centrifugal compressors. Background technique

[0002] Centrifugal compressors are widely used in various industries of the national economy, and are the heart equipment of petrochemical and other industrial processes. With the development of fluid machinery technology and the increasing shortage of energy, higher and higher requirements are put forward for industrial centrifugal compressors. Good reliability, high efficiency and low cost have become the overall goals of compressor design and manufacture. A large number of experiments have shown that reducing the sealing gap of the compressor seal and reducing the leakage of the sealing part can significantly improve the efficiency of the unit without changing the structure of the compressor. However, due to factors such as manufacturing or assembly errors, structural d...