Sealing material for repairing sealing defects of oil-immersed equipment and its preparation device

A plugging material and a technology for preparing a device are applied in the field of leakage plugging, which can solve the problems of unsatisfactory bonding effect, affecting the shape and structure of electrical equipment, and falling off of plugging materials, achieving high strength and anti-corrosion properties, and improving plugging. Efficiency and plugging performance, strength and reliable effect

Active Publication Date: 2021-07-02
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Chinese patent 201610790000.5 discloses an online rapid plugging method for oil-immersed transformers. In this method, phenolic adhesive filled with SiC filler is used as the plugging material at the leakage point, and rubber-type sealant is used as the sealant layer on the surface of the adhesive, and then By pasting the metal casing and inflating the metal casing, its technical defects are: the metal casing affects the shape and structure of the electrical equipment, and the bonding effect between the metal casing and the sealant layer is not ideal, and it is easy to be affected by external forces. cause the sealing material to fall off as a whole

Method used

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  • Sealing material for repairing sealing defects of oil-immersed equipment and its preparation device
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  • Sealing material for repairing sealing defects of oil-immersed equipment and its preparation device

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Embodiment 1

[0036] This embodiment discloses a plugging material for repairing sealing defects of oil-immersed equipment, including two components of 70% base material and 30% auxiliary material, wherein:

[0037] The base material is 15% according to the proportion of epoxy resin E44, 15% of polyacrylate, 8% of nano-silicon dioxide, 36% of nano-silicon carbide, 20% of nano-calcium carbonate, and 20% of nano-zinc powder. It is made by mixing and stirring with a specific gravity of 6%;

[0038] The auxiliary materials are mixed according to the proportion of FS-2B curing agent of 21%, the proportion of nano-silicon dioxide is 7%, the proportion of nano-silicon carbide is 44%, the proportion of nano-calcium carbonate is 19%, and the proportion of nano-zinc powder is 9%. made;

[0039] Before mixing and stirring, the nano-silica, nano-silicon carbide, nano-calcium carbonate and nano-zinc powder are dried, dehydrated, and degassed. For 2 ~ 3h.

[0040] like figure 1 As shown, the preparat...

Embodiment 2

[0053] The difference between embodiment 2 and embodiment 1 is that no polyacrylic resin is added, and the base material is 30% by epoxy resin E44 proportion, and the proportion of nano silicon dioxide is 8%, the proportion of nano silicon carbide is 36%, and the proportion of nano calcium carbonate The specific gravity is 20%, and the specific gravity of nano-zinc powder is 6% by mixing and stirring;

[0054] The auxiliary materials are still mixed according to the proportion of FS-2B curing agent of 21%, the proportion of nano-silicon dioxide is 7%, the proportion of nano-silicon carbide is 44%, the proportion of nano-calcium carbonate is 19%, and the proportion of nano-zinc powder is 9%. to make;

[0055] Before mixing and stirring, the nano-silica, nano-silicon carbide, nano-calcium carbonate and nano-zinc powder are dried, dehydrated, and degassed. For 2 ~ 3h.

[0056] The preparation process of the substrate is as follows:

[0057] (a) Pour the nano-zinc powder into t...

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Abstract

The invention provides a plugging material for repairing sealing defects of oil-immersed equipment and a preparation device thereof. The material includes two components of a base material and an auxiliary material, wherein: the base material is made of epoxy resin E44, polyacrylate, nano Silica, nano-silicon carbide, nano-calcium carbonate, and nano-zinc powder are mixed and stirred; auxiliary materials are mixed and stirred by FS‑2B curing agent, nano-silicon dioxide, nano-silicon carbide, nano-calcium carbonate, and nano-zinc powder ; The base material is coated on the surface of the leaking equipment, and when the curing hardness reaches 60%±5%, the auxiliary material is coated on the surface of the base material to realize the secondary curing of the base material. The effect is: the substrate not only has the high modulus, high strength and high anti-corrosion properties of epoxy resin, but also has the gloss, fullness and weather resistance of acrylate, and then uses auxiliary materials to cure the surface of the substrate, The solidification is rapid and the strength is reliable, which ensures a strong sealing effect, and it is coated with the surface of the equipment, reducing the change of the prototype of the equipment.

Description

technical field [0001] The invention relates to leakage plugging technology, in particular to a plugging material for repairing sealing defects of oil-immersed equipment and a preparation device thereof. Background technique [0002] Oil-immersed power equipment is prone to oil leakage under long-term aging conditions. The oil leakage of the equipment not only affects the treatment of the equipment and reduces the service life of the equipment, but also causes the oil-immersed equipment to change from a sealed state to an unsealed state, and the water content in the local oil increases, resulting in a decrease in the insulation level. Therefore, finding an effective plugging method for oil leakage of oil-immersed equipment is one of the key problems to be solved for emergency repair of power grids. The new plugging material is of great value in reducing the maintenance cost of the power grid and ensuring the safe operation of the power grid. [0003] Chinese patent 2016107...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L33/04C08K3/013C08K3/36C08K3/34C08K3/26C08K3/08B01F7/18B01F15/00
Inventor 魏钢李翠英胡敏张海燕胡刚高国芳朱家富晏春霖张圣卿尹泰
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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