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Cyclic silicon resin seal coating

A sealing coating and resin technology, applied in the field of abradable sealing coating materials, can solve the problems of difficult determination of gas working medium and pollutants, complicated gas working conditions, etc., to achieve good gas path sealing effect, increase Scraping performance, easy-to-control parameters

Inactive Publication Date: 2011-05-11
SHENYANG BLOWER WORKS GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 3. Ambient temperature, gas working fluid and pollutants;
For industrial centrifugal compressors, the temperature rarely exceeds 250°C but the gas working conditions are complicated, and the gas working medium and pollutants are difficult to determine, which should be the focus of the problem
Conventional low-temperature coatings such as nickel-graphite, aluminum-silicon alloy-resin, and organic coatings are difficult to meet these working conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take 65kg of ring silicone resin, 25kg of filling material A, and 10kg of filling material B, wherein the filling material A is any one of polyether ether ketone, polyphenylene ester, and polytetrafluoroethylene with a particle size of 50-100 microns, and the filling material B is the particle size Any one of hexagonal boron nitride, graphite, and bentonite of 20 nanometers to 50 micrometers.

[0024] First, fully mix the filling material A and filling material B with the ring silicone resin, and grind it three times on the SK series open sand mill or S-type three-roller machine produced by Yixing Jingyi Machinery Factory. Then brush the ring silicone resin mixed with filling material A and filling material B on the workpiece, and then preheat the workpiece in an oven for two hours. After preheating, rise to the curing temperature at 10°C / hour for curing.

Embodiment 2

[0026] Take 65kg of ring silicone resin, 25kg of filling material A, and 10kg of filling material B, wherein filling material A is a mixture of polyetheretherketone and polyphenylene ester with a particle size of 50-100 microns, 20kg of polyether ether ketone, and 5kg of polyphenylene ester; B is a mixture of hexagonal boron nitride and graphite with a particle size of 20 nanometers to 50 microns, 5 kg of hexagonal boron nitride and 5 kg of graphite.

[0027] First, fully mix the filling material A and filling material B with the ring silicone resin, and grind it three times on the SK series open sand mill or S-type three-roller machine produced by Yixing Jingyi Machinery Factory. Then brush the ring silicone resin mixed with filling material A and filling material B on the workpiece, and then preheat the workpiece in an oven for two hours. After preheating, rise to the curing temperature at 10°C / hour for curing.

Embodiment 3

[0029] Take 65kg of ring silicone resin, 25kg of filling material A, and 10kg of filling material B, wherein filling material A is a mixture of polyetheretherketone and polytetrafluoroethylene with a particle size of 50-100 microns, 20kg of polyetheretherketone, and 5kg of polytetrafluoroethylene; Filling material B is a mixture of hexagonal boron nitride and bentonite with a particle size of 20 nanometers to 50 microns, 5 kg of hexagonal boron nitride and 5 kg of bentonite.

[0030] First, fully mix the filling material A and filling material B with the ring silicone resin, and grind it three times on the SK series open sand mill or S-type three-roller machine produced by Yixing Jingyi Machinery Factory. Then brush the ring silicone resin mixed with filling material A and filling material B on the workpiece, and then preheat the workpiece in an oven for two hours. After preheating, rise to the curing temperature at 10°C / hour for curing.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/00C09D171/08C09D127/18C09D7/12F04D29/02F04D29/28F04D29/66
Inventor 雍兴平王学军邱大伟李云
Owner SHENYANG BLOWER WORKS GROUP CORP
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