Forming mold for outdoor transformer and its casting and sealing method

Abstract

The invention discloses a molding mold for an outdoor transformer and a pouring and sealing method thereof. The molding mold includes an upper mold and a lower mold for enclosing a mold cavity, and the upper mold is provided with a pouring mold that communicates with the mold cavity. holes and air vents, mold cores are provided in the mold cavity, the upper and lower ends of the mold cores are respectively connected with the upper mold and the lower mold, and the upper and lower ends of the mold cores are respectively snapped into the upper groove of the upper mold And in the lower groove of the lower mold, the part of the mold core located in the mold cavity is cylindrical; a set of fixed pillars for supporting the transformer coil are arranged around the mold cavity in the mold cavity, and the fixed pillars are connected with the lower mold core. The mold is fixedly connected, and the upper end of the fixed pillar is provided with a ladder-shaped clamping platform for clamping the outer edge and the lower edge of the transformer coil. The invention has the advantages of being able to improve the resin casting and solidifying efficiency of the outdoor transformer, reduce the unit energy consumption and waste rate of the outdoor transformer, and improve its insulation degree.

Description

technical field [0001] The invention belongs to the technical field of manufacturing outdoor transformers, and in particular relates to a forming mold of an outdoor transformer and a casting and sealing method thereof. Background technique [0002] 10 kV castable current transformers are widely used in power equipment such as switch cabinets. At present, outdoor 10 kV transformers are usually divided into two or more times of resin casting and sealing, and then the outdoor 10 kV transformers can only be completed after silicone encapsulation. The result of such two or more pouring and sealing methods is: more pouring or injection molds are invested; the workload and work intensity are large; the energy consumption per unit of the finished product is high; the man-hours of the finished product manufacturing unit are many; Cavitation is prone to occur in the joint part of the first pouring, causing partial discharge to exceed the standard; the joint part of two or more pouring...

AI Technical Summary

Problems solved by technology

[0002] 10 kV castable current transformers are widely used in power equipment such as switch cabinets. At present, outdoor 10 kV transformers are usually divided into two or more times of resin casting and sealing, and then the outdoor 10 kV transformers can only be completed after silicone encapsulation. The result of such two or more pouring and sealing methods is: more pouring or injection molds are invested; the workload and work intensity are large; the energy consumption per unit of the finished product is high; the man-hours of the finished product manufacturing unit are many; Cavitation is prone to occur in the joint part of the first pouring, causing partial discharge to exceed the standard; the joint part of two or more pourings is not firmly bonded, and gaps appear, causing cracks in the joint part, resulting in a decrease in the insulation degree, which often causes the transformer to be broken down. Damage to connected secondary equipment and threats to personal safety

This needs to address the problems caused by the multiple casting and sealing of the original outdoor 10 kV transformer, and improve the resin casting and sealing method of the transformer in the production process to improve production efficiency and reduce the unit energy consumption and waste products of the product rate, improve its insulation degree, and prevent outdoor transformers from being broken down due to high voltage, posing a threat to personal safety

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