Lubricant oil special for electric underwater pump

A technology of submersible electric pump and lubricating oil, which is applied in the field of lubricating oil to achieve the effect of avoiding explosion accidents and preventing wear

Inactive Publication Date: 2009-03-25
ZHEJIANG LANGXI GASOLINEEUM CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a special lubricating oil for submersible electric pumps, which solves the problems caused by transformer oil as submersible pump oil

Method used

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  • Lubricant oil special for electric underwater pump
  • Lubricant oil special for electric underwater pump

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Embodiment Construction

[0013] The base oil of the special lubricant for submersible electric pumps is a mixture of hydrorefined base oil (N15) and hydrorefined base oil (150BS) with good oxidation resistance. Their weight ratios in the lubricating oil are 95.6995% and 3, respectively. %, and then add additives including high-efficiency antioxidants, electrical insulating agents and detergents and dispersants. Among them, the high-efficiency antioxidant is 2,6-di-tert-butylphenol (T501), whose content accounts for 0.8% of the total weight of the lubricating oil. The lubricating oil uses a hydrorefined base oil with good oxidation resistance, and a large amount of this ingredient is added After that, the life of the lubricating oil is much longer than the life of the submersible pump, and the oxidation stability test (ASTMD943) reaches more than 2000h; the electrical insulating agent is polydimethylsiloxane (T901), and its content accounts for the total lubricating oil. 0.0005% by weight, the purpose of a...

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Abstract

The invention relates to a dedicated lubricating oil of a submersible motor pump. The dedicated lubricating oil consists of the following components: 98.5 percent to 98.8 percent of base oil, 0.7 percent to 0.9 percent of highly effective antioxidant, 0.0004 percent to 0.0006 percent of electric insulating agent and 0.4 percent to 0.6 percent of detergent dispersant (the total weight is calculated by 100 percent), wherein, the base oil is hydrofining base oil; the highly effective antioxidant is 2,6-di-tert-butylphenol (T501); and the electric insulating agent is dimethyl silicone polymer (T901) and the detergent dispersant is polyisobutene succimide (T154). The dedicated lubricating oil of the submersible motor pump has the advantages of antiknock (the flash point is more than 170 DEG C), long service life (testing of oxidation stability ASTM D943, more than 2000h), wear resistance (Pb value reaches 400N in a four-ball test) and high voltage against breakdown (the breakdown voltage is more than 30000V).

Description

Technical field [0001] The invention relates to lubricating oil, in particular to a special lubricating oil for submersible electric pumps. Background technique [0002] Submersible pumps are widely used in industrial and agricultural production. The motors of submersible pumps are immersed in water for a long time. The rotor and stator of the submersible pumps must pass a medium to transfer the heat generated during energized operation to the shell, and then the shell transfers the heat to the water. So as to play a role in heat dissipation. At present, since there is no special lubricant, all submersible electric pump factories use transformer oil as this medium. Transformer oil does have good insulation and heat dissipation performance, but the working conditions of the transformer are very different from those in the submersible electric pump: the transformer oil is in a static state or natural convection state in the transformer, and will not be polluted by foreign impuritie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M111/04
Inventor 王福明
Owner ZHEJIANG LANGXI GASOLINEEUM CHEM TECH
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