Coil structure of open ventilated type stereoscopic wound-core dry-type transformer

Abstract

A coil structure of open ventilated type stereoscopic wound-core dry-type transformer, comprising wire disks formed by wound wires and fixing parts. The fixing parts are provided with clamping grooves for fixing the wire disks. The wire disks are fixed and wound around the fixing parts to form the coil structure. The outer layers of the wires are coated with insulating paper with insulating paint. And by insulating paint, wires are adhered mutually and wire disks adhere to fixing parts, which combine into an integral structure. The coil structure does not require another paint impregnation process, so the process is simplified. And by the insulating paint on the insulating paper, wires are adhered mutually and wire disks adhere to fixing parts, so the structure is stable and firm and ensures the electrical equipment meets the requirements of electric performance, mechanical property and insulating property.

Claims

1. A coil structure of an open ventilated type stereoscopic wound-core dry-type transformer, comprising; wire disks formed by wound wires and fixing parts, wherein the fixing parts are provided with clamping grooves for fixing the wire disks, wherein the wire disks are fixed and wound around the fixing parts to form the coil structure, wherein the outer layers of the wires are coated with insulating paper with insulating paint; and by way of the insulating paint, the wires are adhered mutually and wire disks adhere to the fixing parts, which are combined into an integral structure, wherein, the insulation paper is soaked in insulation paint firstly, then the wires are wrapped with the insulation paper with insulation paint, finally the coil is wound with the wire, wherein, three coils are in triangular structure to form a three-phase coil structure, and the coil structure is suitable for the open ventilated type three-phase dry-type transformer, wherein, the clamping grooves on the fixing parts are equally spaced to separate the wire disks so as to form air passages, wherein, the fixing parts are made of insulating material, and wherein, the coil structure is fixed on insulating cylinder or the main body of a transformer.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) The embodiments of the disclosure are further described by combining the accompanying drawings.

(2) FIG. 1 is a diagram of a coil structure of an embodiment of the disclosure;

(3) FIG. 2 is a diagram of combination of the coils of the disclosure.

DETAILED DESCRIPTION

(4) Referring to FIG. 1 and FIG. 2, the disclosure provides a coil structure of open ventilated type stereoscopic wound-core dry-type transformer, comprising wire disks 1 and fixing parts 2. The wire disks 1 are wound by wires whose outer layers are coated with insulating paper. The insulating paper is subjected to dip pretreatment in insulating paint, so the inside and the surface of the insulating paper are impregnated with the required content of insulating paint; and the insulating paper ensures the insulativity between wires. The fixing parts 2 are provided with clamping grooves for fixing the wire disks 1, and the wire disks 1 are fixed and wound around the fixing parts 2 to form the coil structure, and clamping grooves are equally spaced so the wire disks 1 are separated to form air passages 3, which is beneficial to heat dissipation. Meanwhile, the insulating paper also ensures the insulativity between wire disks 1 and fixing parts 2. After the completion of winding of a coil, staying for a required period in certain temperature range, and by insulating paint, wires are adhered mutually and wire disks 1 adhere to fixing parts 2, so the coil structure becomes an integral whole and meets the requirements of electric performance, mechanical property and insulating property. When the coil structure is fixed on insulating cylinders or other parts of the main body of a transformer, it can decrease axial electrodynamic force of the coils. The coils are in triangular structure to form a three-phase coil structure; and the coil structure is suitable for the open ventilated type three-phase dry-type transformer and ensures the transformer meets the requirements of electric performance, mechanical property and insulating property.

(5) The descriptions above are only various embodiments of the disclosure, therefore, the disclosure is not limited to the above structure of the embodiments and any conditions for implementing the technical effects of the disclosure by the same means shall be covered by the disclosure.