Annular sample considering pressing force

Abstract

The invention provides an annular sample considering pressing force, which is characterized in that cushion blocks are fixed on the base surfaces of an upper pressing plate and a lower pressing plate to form a circular ring shape, and a lower pressing plate groove is reserved between the adjacent cushion blocks on the lower pressing plate; upper pressing plate grooves are formed in the upper pressing plate and between the adjacent cushion blocks; the width of the groove of the lower pressing plate is half of that of the groove of the upper pressing plate, each excitation coil on the annular sample is uniformly distributed in the groove of the lower pressing plate, and every two excitation coils are uniformly distributed in the groove of the upper pressing plate; the measuring coils are uniformly wound on the annular sample according to the grooves of the upper pressing plate, and the measuring coils are inserted between the two exciting coils in each groove of the upper pressing plate; and the upper pressing plate and the lower pressing plate are connected through the metal screw rod. According to the method, the error between the annular sample designed in a laboratory and annular sample application equipment in actual engineering is reduced, the manpower and material resource cost invested in the later period of the annular sample application equipment can be reduced to a certain extent, and the engineering design and application efficiency of the annular sample is improved.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a ring-shaped sample considering compaction force. Background technique [0002] The development of high-efficiency and energy-saving distribution transformers is an inevitable trend in the development of power equipment. It not only meets the needs of national economic development, but also meets the requirements of the State Grid Corporation of China to build energy-saving, low-carbon, and green power grids. The new energy efficiency standard GB20052-2020 "Power Transformer Energy Efficiency Limits and Energy Efficiency Grades" has been officially implemented on June 1, 2021. The new energy efficiency standard further reduces the no-load loss and load loss of distribution transformers. The loss is not only related to the material thickness and iron loss of the silicon steel sheet used, but also related to the structure of the transformer. In terms of transformer structure...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a fixture device for measuring the ring sample under the consideration of the compression force, so as to solve the problem in the prior art when the ring sample is manually designed before the ring sample is applied to the project, due to the lack of engineering applications caused by equipment assembly. The experimental conditions of the clamping force lead to a large error between the design and the actual engineering application

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