Double-layer surrounding type radio frequency coil for aging measurement of composite insulator umbrella skirt

A technology of composite insulators and radio frequency coils, which is applied in the direction of magnetic resonance measurement, etc., can solve the problems that the aging degree of composite insulator sheds cannot be accurately estimated, the internal structure of radio frequency coils cannot be changed, and the overall measurement of sheds cannot be achieved, so as to enhance the flexibility of use High performance, simple structure and low cost

CN105223525AActive Publication Date: 2016-01-06GUANGDONG POWER GRID CO LTD DONGGUAN POWER SUPPLY BUREAU +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-01-06

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Abstract

The invention discloses a double-layer surrounding type radio frequency coil for the aging measurement of a composite insulator umbrella skirt. The coil is in the form of an annular coil of a two-layer structure composed of an upper layer and a lower layer. The lower layer is composed of a periphery of lower circular arcs arranged along the periphery of an annular upper edge and raised towards the internal center of the annular upper edge. Between adjacent lower circular arcs, a plurality of upper circular arcs, of the same size as the lower circular arcs and the same direction as the lower circular arcs, upwardly form the upper layer via leads. Annular gaps are formed between the plurality of upper circular arcs and the periphery of lower circular arcs. The orthographic projection of each upper circular arc on two adjacent lower circular arcs connected with the upper circular arc is partially overlapped with the two lower circular arcs. The periphery of the composite insulator umbrella skirt is clamped by the above annular gaps, so that the upper circular arcs and the lower circular arcs cling to each other. In this way, the radio frequency coil is fastened onto the composite insulator umbrella skirt to be measured. According to the technical scheme of the invention, the radio frequency coil is clamped onto the composite insulator umbrella skirt, so that the composite insulator umbrella skirt can be measured. As a result, the radio frequency coil is convenient to use and the overall composite insulator umbrella skirt can be measured. The overall aging degree of the composite insulator umbrella skirt can also be measured.
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Description

technical field

[0001] The invention relates to a planar radio frequency coil, in particular to a double-layer surrounding radio frequency coil used for aging measurement of sheds of composite insulators. Background technique

[0002] Nuclear magnetic resonance is a physical phenomenon in which the nuclear magnetic moment of a substance undergoes energy level splitting under the action of an external magnetic field, and an energy level transition occurs under the action of an external radio frequency magnetic field. Since the discovery of nuclear magnetic resonance absorption by American scientists Bloch and Purcell in 1946, nuclear magnetic resonance technology has achieved unprecedented development in the fields of spectroscopy and medical imaging, which has greatly promoted the progress of human society.

[0003] NMR equipment using NMR technology includes high-field NMR equipment and low-field NMR equipment. Common high-field nuclear magnetic resonance equipment, such a...

Examples

Embodiment Construction

[0027] like Figure 1~3 As shown, it is a double-layer encircling radio-frequency coil 4 used for composite insulator shed aging measurement according to the present invention. Several lower circular arcs 1 protruding toward the inner center of the ring are arranged along its periphery on the ring, and adjacent lower circular arcs 1 pass through lead wires 2 upward to form several circular arcs with the same size and direction as the lower circular arcs 1. The upper arc 3 constitutes the upper structure, the two ends of the lower arc 1 lead extension lines and then connect with the lower end of the lead wire 2 through the circular arc segment, and the extension lines drawn at both ends of the upper arc 3 are directly connected to the upper end of the lead wire 2, Between several upper arcs 3 and several lower arcs 1, an annular gap is formed, and the orthographic projection of each upper arc 3 on two adjacent lower arcs 1 connected to it is consistent with the two lower arcs. ...