Oil gap pads, which play an important role in power equipment such as transformers, are mainly used to fill the oil gap between the windings to provide insulation and support.

1. Definition and function

An oil gap cushion is a blocky object made of insulating material that is placed in the oil gap between the windings of a transformer.Its main functions include：

Insulation effect: The oil gap cushion has good insulation properties, can effectively isolate the windings between different potentials, prevent current leakage and short circuit, and ensure the safe operation of the transformer.

Supporting effect: The oil gap cushion can also provide the necessary support for the winding, keep the shape and position of the winding stable, and prevent the winding from being deformed or displaced during operation.

2. Type and structure

The types and structures of oil gap pads are diverse to meet different transformer design and operating requirements.Common types of oil gap pads include：

Classified by material: such as rubber oil gap pads, plastic oil gap pads, etc., oil gap pads of different materials have different insulation properties and aging resistance.

Classified by shape: common shapes are rectangular, round, I-shaped, etc., and have special designs such as dovetail notches, T-shaped notches, etc. to meet specific installation needs.

Composite structure: Some oil gap pads are designed with a composite structure, such as forming an insulating layer together with the paper ring, and improving stability and insulating properties through the design of the limit groove and the rubber layer.

3. Design and application

The design of the oil gap cushion needs to consider a number of factors, including the voltage level of the transformer, the winding structure, and the size of the oil gap.In practical applications, the oil gap pads need to be processed and installed according to specific design drawings and requirements.

Processing and forming: The processing and forming methods of oil gap pads are diverse, including blanking, milling and other processes.With the improvement of the voltage level of power transformers and the improvement of quality requirements, the traditional blanking process has been difficult to meet the demand, so advanced equipment such as oil gap cushion forming machines have appeared, and one-time milling and forming processing methods have been used to effectively improve product quality and production efficiency.

Installation and adjustment: When installing the oil gap gasket, it is necessary to ensure that the gasket fits tightly and the position is accurate between the gasket and the winding.Adjustments and optimizations may need to be made during the installation process to ensure that the pads perform at their best.

Fourth, the importance

The importance of oil gap pads in transformers is self-evident.Good insulation performance and support are essential to ensure the safe and stable operation of the transformer.If the oil gap cushion is defective or improperly installed, it may cause partial discharge, creepage and other phenomena, which in turn affect the insulation performance and service life of the transformer.

In summary, oil gap pads are an indispensable part of power equipment such as transformers.Through reasonable design and processing, as well as correct installation and adjustment, it can give full play to its role and provide a strong guarantee for the safe and stable operation of power equipment.

V. Summary

In summary, oil gap pads play an important role in power equipment such as transformers and are one of the key factors to ensure the safe and stable operation of equipment.With the rapid development of the power industry and the continuous progress of power equipment technology, the quality and performance requirements of oil gap pads will also continue to improve.Therefore, when designing and manufacturing oil gap pads, it is necessary to fully consider the operating conditions and requirements of the equipment to ensure that the pads can meet actual needs and play the best results.