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A nano-coating material suitable for the surface of electric submersible pump motor head

A technology of nano-coating and submersible electric pumps, which is applied in the direction of surface coating liquid devices, coatings, anti-corrosion coatings, etc., and can solve problems such as low bonding strength, falling off or peeling, shortening the service life of submersible electric pumps, etc. , to achieve the effect of improving corrosion resistance and wear resistance, enhancing bonding ability, and increasing the number of cycles of thermal shock resistance

Active Publication Date: 2021-12-14
ANHUI JINWAN PUMP TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bonding strength between the existing coating material and the metal surface of the motor head is low, and the residual stress inside the coating is further increased due to thermal expansion and contraction during the spraying process, resulting in shedding or peeling when subjected to a large external force , shorten the service life of the submersible electric pump

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A nano-coating material suitable for the surface of a submersible electric pump motor head. Specifically, the preparation of the nano-coating material includes the following process steps:

[0016] (1) Take 100 grams of fly ash, add 1.5 times the volume of hydrochloric acid solution with a molar concentration of 1.6 mol / liter, stir at 70°C for 1 hour at a stirring speed of 400 rpm, then let it stand for aging for 60 minutes, and carry out Filter, wash with deionized water until neutral, dry in an oven at 100°C for 7 hours, place in a muffle furnace, heat up to 750°C, keep warm and calcined for 45 minutes, after natural cooling, mechanically grind to pass through a 500-mesh sieve;

[0017] (2) Weigh a total of 30 grams of strontium carbonate and manganese carbonate powder according to the mass ratio of 2.0:1.2, and weigh a total of 14 grams of strontium titanate and lead titanate powder according to the mass ratio of 1.3:1.0, mix Add 0.75 grams of rare earth oxides, add ...

Embodiment 2

[0023] A nano-coating material suitable for the surface of a submersible electric pump motor head. Specifically, the preparation of the nano-coating material includes the following process steps:

[0024] (1) Take 108 grams of fly ash, add 1.7 times the volume of hydrochloric acid solution with a molar concentration of 1.8 mol / liter, stir at 75°C for 1.5 hours at a stirring speed of 450 rpm, then let it stand for aging for 65 minutes, and carry out Filter, wash with deionized water until neutral, dry in an oven at 105°C for 8 hours, place in a muffle furnace, heat up to 770°C, keep warm and calcined for 50 minutes, after natural cooling, mechanically grind to pass through a 530-mesh sieve;

[0025] (2) Weigh a total of 33 grams of strontium carbonate and manganese carbonate powder according to the mass ratio of 2.1:1.3, and weigh a total of 15 grams of strontium titanate and lead titanate powder according to the mass ratio of 1.4:1.1. Add 0.78 grams of rare earth oxides, add t...

Embodiment 3

[0031] A nano-coating material suitable for the surface of a submersible electric pump motor head. Specifically, the preparation of the nano-coating material includes the following process steps:

[0032] (1) Take 115 grams of fly ash, add 2.0 times the volume of hydrochloric acid solution with a molar concentration of 2.0 mol / L, stir at 80°C for 2 hours at a stirring speed of 500 rpm, then let it stand for aging for 70 minutes, and carry out Filter, wash with deionized water until neutral, dry in an oven at 110°C for 10 hours, place in a muffle furnace, raise the temperature to 790°C, keep it for calcination for 55 minutes, cool naturally, and grind it mechanically until it passes through a 550-mesh sieve;

[0033] (2) Weigh a total of 36 grams of strontium carbonate and manganese carbonate powder according to the mass ratio of 2.3:1.4, and weigh a total of 16 grams of strontium titanate and lead titanate powder according to the mass ratio of 1.6:1.2. Add 0.80 gram of rare ea...

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Abstract

The invention relates to the technical field of pump performance research, and discloses a nano-coating material suitable for the surface of a submersible electric pump motor head. The material has strong high-temperature stability, and the prepared nano-coating The material is sprayed onto the surface of the motor head to obtain a coating with a thickness between 60-72 microns. The small droplets formed during the spraying process have high activity and wettability, and the contact area with the surface of the motor head substrate is large, enhancing Even under the action of stress, the nanoparticles can slide as a whole, and have stress release properties, so that the internal stress of the coating is significantly reduced, and the formed coating has a high bonding strength with the surface of the motor head, and the bonding strength reaches 68-72MPa , strong thermal shock resistance, thermal shock resistance cycle times increased by 40‑50%, corrosion resistance and wear resistance are significantly improved, long-term surface protection for submersible electric pump motor heads, and can adapt to high-concentration corrosive media High temperature and high pressure working environment.

Description

technical field [0001] The invention belongs to the technical field of pump performance research, in particular to a nano coating material suitable for the surface of a submersible electric pump motor head. Background technique [0002] The electric submersible pump is a multi-stage centrifugal pump working underground. It is lowered into the well together with the oil pipe. The surface power supply transmits electric energy to the underground submersible motor through the transformer, control panel and power cable, so that the submersible motor drives the multi-stage centrifugal pump to rotate. Convert electrical energy into mechanical energy to lift the well fluid in the oil well to the surface. In the process of oil production in oil fields, the corrosion of submersible electric pumps by underground corrosive media is a common practical problem, which has a huge adverse effect on the performance and service life of pump equipment. In particular, the motor head is the cor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D5/08C09D7/65C09D7/63C09D7/61B05D1/00B05D1/12B05D5/00B05D5/08B05D7/24
CPCC09D1/00C09D5/08C09D7/65C09D7/63C09D7/61B05D1/62B05D1/12B05D7/24B05D5/00B05D5/08
Inventor 余雷
Owner ANHUI JINWAN PUMP TECH CO LTD
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