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Special anti-radiation high and low temperature lubricating grease for nuclear grade pump

A lubricating grease and anti-radiation technology, applied in the field of lubricating grease, can solve the problems of leakage of radioactive pollutants, wear, corrosion and cracking, leakage of radioactive pollutants, etc., and achieve excellent radiation resistance, long life, and excellent high and low temperature resistance and stability effects

Active Publication Date: 2018-03-16
科特龙流体科技(扬州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the parts in the nuclear pump are worn, broken, slipped and other problems, it is easy to cause the leakage of the radioactive pollutants transported, which will cause serious environmental pollution and cause great harm to the body of the staff
[0004] In order to ensure a more reliable operation of the nuclear pump, it is necessary to develop a special lubricating grease for nuclear pumps, which can effectively ensure that the parts in the nuclear pump work better, and avoid wear, corrosion and cracking of parts such as bearings, and the rotor is stuck , leading to problems such as leakage of radioactive pollutants

Method used

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  • Special anti-radiation high and low temperature lubricating grease for nuclear grade pump
  • Special anti-radiation high and low temperature lubricating grease for nuclear grade pump

Examples

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preparation example Construction

[0022] In this embodiment, the preparation method of the grease includes the following steps: first thicken polyurea powder with alkyl diphenyl ether base oil, then add PTFE micropowder and silicon dioxide, stir and mix for 1 hour, then add zinc oxide and mix well and grind three times; the preparation method adopted is simple and easy to operate, which can not only ensure the full mixing of each raw material component, but also promote the mutual synergy of each raw material component, better exert the performance advantages, and prepare the excellent performance and Lubricating grease that meets the needs of nuclear pumps.

[0023] In this example, all raw material components can be obtained through market purchase.

Embodiment 1

[0026] The anti-radiation high and low temperature special lubricating grease for nuclear-grade pumps provided in this embodiment, the raw materials of the lubricating grease include the following components by weight percentage: 92% of alkyl diphenyl ether (viscosity VG68-220), 3% of polyurea powder, PTFE micropowder 3%, silicon dioxide 1%, zinc oxide (500 mesh) 1%;

[0027] in:

[0028] The purity of the zinc oxide is ≥99.5%;

[0029] The particle size of the PTFE micropowder is ≤5 μm;

[0030] The silicon dioxide is hydrophilic nano-scale silicon dioxide produced by the gas phase method, with a purity of ≥99.0%;

[0031] In this embodiment, the preparation method of the grease includes the following steps: first thicken polyurea powder with alkyl diphenyl ether base oil, then add PTFE micropowder and silicon dioxide, stir and mix for 1 hour, then add zinc oxide and mix well And grind three times, you can.

Embodiment 2

[0033] The anti-radiation high and low temperature special lubricating grease for nuclear-grade pumps provided in this embodiment, the raw materials of the lubricating grease include the following components by weight percentage: 87% of alkyl diphenyl ether (viscosity VG68-220), 5% of polyurea powder, PTFE micropowder 4%, silicon dioxide 2%, zinc oxide (800 mesh) 2%;

[0034] in:

[0035] The purity of the zinc oxide is ≥99.5%;

[0036] The particle size of the PTFE micropowder is ≤5 μm;

[0037] The silicon dioxide is lipophilic nano-scale silicon dioxide produced by the gas phase method, with a purity of ≥99.0%;

[0038] In this embodiment, the preparation method of the grease is the same as in Embodiment 1.

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Abstract

The invention provides a special anti-radiation high and low temperature lubricating grease for a nuclear grade pump. Raw materials of the lubricating grease comprise the following components in percentages by weight: 85% to 92% of alkyl diphenyl ether, 3% to 10% of polyurea powder, 3% to 8% of PTFE micro powder, 1% to 6% of silicon dioxide and 1% to 5% of zinc oxide; and the gross of the components of the raw materials is 100%. Through the adoption of the appropriate components with reasonable using amounts, the components of the raw materials can preferably play a mutual coordination effectin prepared vacuum pump oil, then through a specific preparation technology, the mutual coordination effect of the components of the raw materials is realized, and finally the special anti-radiation high and low temperature lubricating grease for the nuclear grade pump which is high in high and low temperature resistance and stability, long in service life and excellent in oxidation resistance, aging resistance and radiation resistance is prepared; and moreover, the lubricating grease has preferable extreme pressure abrasive resistance. Through the raw materials and components adopted in the lubricating grease, besides the excellent performance, the components also have an extremely high mutual coordination effect and an excellent synergistic effect.

Description

technical field [0001] The invention relates to the field of lubricating grease, in particular to a special lubricating grease for anti-radiation high and low temperature of nuclear grade pumps. Background technique [0002] Nuclear power plants have potential radioactive hazards. To ensure that nuclear power plants will not cause unacceptable harm to the public and the environment under normal operation or accident conditions, stricter requirements must be placed on the quality and operational reliability of equipment and systems in nuclear power plants. [0003] The nuclear pump is the medium conveying equipment of the key system of the nuclear power plant and the heart of the system. If the components in the nuclear pump are worn, broken, slipped and other problems, it is easy to cause the leakage of the radioactive pollutants transported, which will cause serious environmental pollution and cause great harm to the body of the staff. [0004] In order to ensure a more re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M167/00C10N30/08C10N30/10C10N30/06C10N50/10C10N40/06
CPCC10M167/00C10M2201/062C10M2201/105C10M2207/04C10M2213/062C10M2217/045C10N2030/06C10N2030/08C10N2030/10C10N2040/06C10N2050/10C10N2030/72C10N2020/06C10N2020/091
Inventor 朱塑军龙在安
Owner 科特龙流体科技(扬州)有限公司
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