CN204809023U - Prevent high -pressure embedment transformer - Google Patents

Abstract

The utility model provides a prevent high -pressure embedment transformer. It parallel and meet the circular piezo -resistor of 5 millimeters diameters at the transformer primary both ends that are used for production embedment transformer, when this embedment transformer at the during operation, when meeting above the high -pressure surge of this piezo -resistor on voltage, pulse, response thunder, just absorbed by piezo -resistor, protected the primary of embedment transformer.

Description

Anti-high pressure potted transformer

Technical field

The utility model is the anti-high voltage surge of a kind of energy, pulse, can resist the potted transformer of induced lightening.

Background technology

Now all potted transformer all do not have the anti-high voltage surge of built-in primary coil, pulse, the protective device of anti-induction thunder, are inadequate like this.Potted transformer is to miniaturization, the wire diameter of primary coil is more and more less, more and more fragile, the wire diameter of the primary coil enamelled wire of the small-sized potted transformer had only has 0.03 millimeter, the thickness of its insulation coat of paint only has 0.001 millimeter, slight scratch is that difficulty is avoided in process of production, if there is slight scratch, the equipment of factory not easily detects, if such potted transformer is used in bad environments, voltage is higher, high voltage surge, pulse is many, the place that thunderbolt is many, potted transformer is elementary directly in parallel with 220 volts of alternating currents, large by ectocine, just be easy to cause because insulation degree is inadequate, between primary turns, easily spark is produced between coil and silicon steel sheet, casting glue heating bulge or primary coil are burnt out.

Summary of the invention

In order to prevent high voltage surge, pulse and induced lightening to the damage of potted transformer primary coil, the utility model provides a kind of anti-high pressure potted transformer, in case high voltage surge, pulse, anti-induced lightening.

The utility model solves the technical scheme that its technical problem adopts: at the pin at the transformer two ends for the production of potted transformer, parallel and connect the circular piezo-resistance of an admittance voltage 470 volts of diameters 5 millimeters, this piezo-resistance is loaded shell together with transformer, pours into polyurethane pouring sealant and dry, make anti-high pressure potted transformer.Diameter 5 mm of thickness about 2 millimeter of this circular piezo-resistance, volume is little, and when pouring into polyurethane casting glue, it floods by polyurethane pouring sealant, and outward appearance is substantially unaffected.Just absorbed by piezo-resistance when running into high voltage surge, pulse higher than 470 volts; when run into stronger induced lightening then piezo-resistance conducting absorb energy together with the fuse in 220 volts of alternating current circuits, air switch; thus protect fragile primary coil, protect potted transformer.

The beneficial effects of the utility model are: the potted transformer primary coil making fragile potted transformer primary coil and even have the shop equipment of slight scratch not easily to detect, and are effectively protected running into higher than when 470 pressure surges, pulse, induced lightening.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the utility model is further illustrated.

Fig. 1 is circuit theory diagrams of the present utility model.

Fig. 2 is the sectional structure chart of anti-high pressure potted transformer.

1. conducting voltage, 470 volts of diameters, 5 millimeters of circular piezo-resistances in figure, 2. transformer is elementary, 3. transformer secondary output, 4. silicon steel sheet, 5. coil pin, 6. shell.

Specific embodiments:

In Fig. 1 .2, at a pin for the production of the EI type transformer two ends of potted transformer, parallel and connect the circular piezo-resistance an of conducting voltage 470 volts of diameters 5 millimeters, this piezo-resistance is loaded in shell together with EI transformer, pour into polyurethane pouring sealant, and this piezo-resistance is flooded, make outward appearance unaffected, dry and make anti-high pressure potted transformer.

Claims (1)

1. an anti-high pressure potted transformer, it is characterized in that: parallel for the production of the transformer two ends of potted transformer and connect the circular piezo-resistance an of conducting voltage 470 volts of diameters 5 millimeters, this piezo-resistance is loaded shell together with transformer, dry after filling polyurethane pouring sealant, make anti-high pressure potted transformer.