Mutual inductor silicone rubber composite insulation technology integrated injection process
A composite insulation and injection process technology, applied in the manufacture of inductors/transformers/magnets, electrical components, circuits, etc., can solve the problems of water seepage in the cavity gap, low production efficiency, long curing time, etc., achieving small size and high production efficiency. , compact structure
Pending Publication Date: 2022-06-03
DALIAN NORTH INSTR TRANSFORMER GROUP
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Problems solved by technology
[0002] Outdoor transformer is a device for measuring voltage, electric energy or relay protection in the power system. Most of its existing manufacturing methods are to fix the primary and secondary coils and iron cores in the mold by hoisting, and cast the core through epoxy resin. It is then bonded with a silicone rubber sleeve; this method has problems such as long curing time, high cost, high energy consumption, and low production efficiency, and the bonding surface of the silicone rubber sleeve and the core epoxy resin has cavities, gaps, water seepage, etc. shortcoming
Method used
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Embodiment 1
[0023] This embodiment provides an integrated injection process of transformer silicone rubber composite insulation technology, which is realized by a core body, vulcanized silicone rubber and an injection machine. Clamp the mold. Then, the vulcanized silicone rubber is injected into the mold cavity through the runner, and cured at high temperature after filling. The specific implementation steps are:
[0024] Core body production: The wrapped coil body is fixed in the casting mold, and epoxy resin is vacuum-cast and cured to become the inner core body, that is, the core body; the front and rear surfaces of the core body are scratched with a grinding wheel stone for rough treatment, and then the core body is Clean the impurities on the surface of the body, apply the adhesive evenly (prepared by primer (GC-11) and alcohol (anhydrous ethanol) according to 1:2), put it in an oven, the oven is kept at a constant temperature and the temperature is 80±5 °C for at least 3 hours.
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Abstract
The invention discloses a mutual inductor silicone rubber composite insulation technology integrated injection process which comprises the following steps: fixing a wrapped coil device body in a pouring mold, and carrying out vacuum pouring and curing by adopting epoxy resin to form an inner core body, namely a core body; the core body is arranged in an integrated injection silicone rubber mold, and the mold is closed after a mold assembly is assembled; obtaining refined high-temperature vulcanized silicone rubber, confirming process data of an injection machine, starting a motor of the injection machine, and charging and plasticizing; silicone rubber is injected and vulcanized to form a silicone rubber insulating layer, so that the silicone rubber composite insulating outdoor mutual inductor silica gel body is formed; after high-temperature curing, the die assembly is disassembled to remove the die seam sheet; and finally, putting the silicone rubber composite insulation outdoor mutual inductor colloidal silica into a furnace to be continuously cured. The production cycle of the integrated injection silicone rubber composite insulation outdoor voltage transformer produced by the process is obviously shortened, the energy-saving and consumption-reducing effects are obvious, and the integrated injection silicone rubber composite insulation outdoor voltage transformer is suitable for large-scale continuous assembly line work and high in production efficiency.
Description
technical field [0001] The invention relates to the technical field of transformer silicon rubber composite insulation, in particular to an integrated injection process of transformer silicon rubber composite insulation technology. Background technique [0002] The outdoor transformer is a device for measuring voltage, electric energy or relay protection in the power system. Most of the existing production methods are to fix the primary and secondary coils and iron cores in the mold by hoisting, and cast the core through epoxy resin. It is then bonded with a silicone rubber sleeve; this method has problems such as long curing time, high cost, high energy consumption, and low production efficiency, and the bonding surface between the silicone rubber sleeve and the core epoxy resin has cavity gaps and water seepage, etc. shortcoming. [0003] With the comprehensive advancement of the national distribution network automation, various intelligent outdoor pole switches and demar...
Claims
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IPC IPC(8): B29C45/00B29C45/14B29B11/06B29C39/00B29C39/10H01F41/00B29K63/00B29K83/00
CPCB29C45/0001B29C45/14B29C45/1418B29B11/06B29C39/003B29C39/10H01F41/00B29C2045/14245B29K2063/00B29K2083/00
Inventor 李涛昌王仁焘欧希堂赵日东高庆利管永秋徐策李锋贾学锋徐进陶桂彬于德强周顺开郐小娟李建龙王帅
Owner DALIAN NORTH INSTR TRANSFORMER GROUP