Vibration excitation head for vibration acoustic detection in power industry

Abstract

The invention provides a vibration excitation head for vibration acoustic detection in a power industry. Two rotatable and clamped half clamping rings are arranged on an outer wall of a flange of a supporting insulator in a surrounding mode, and a situation that a vibration amplitude of the supporting insulator is affected by arrangement of the vibration excitation head is avoided; the half clamping rings are matched with sliding blocks through sliding rails and can be connected with a plurality of connecting blocks in a sliding mode, and the connecting blocks can annularly slide along the inner sides of the half clamping rings; each connecting block is internally provided with a storage groove for placing a to-be-launched launching ball; the launching ball is ejected out of the storage groove through a triggering mechanism and collides with the outer wall of the flange so that the supporting insulator vibrates; each connecting block is provided with a storage groove for receiving thelaunching ball rebounded by the outer wall of the flange; each launching ball collides with the supporting insulator once so that the influence of secondary or multiple collisions on the vibration ofthe supporting insulator is avoided; and the plurality of connecting blocks are arranged in the half clamping rings at the same time, the launching balls are popped up respectively, multi-point collision of the supporting insulator can be achieved, and an application range of the vibration excitation head is widened.

Description

technical field [0001] The invention relates to the technical field of power equipment, in particular to an excitation head for vibroacoustic detection in the power industry. Background technique [0002] Post insulators are special insulation controls that can play an important role in overhead transmission lines. The field pillar insulator vibro-acoustic testing equipment that is widely used in China is mainly a portable vibro-acoustic detector, which integrates a vibration excitation head, a vibration signal acquisition head and a signal processing circuit. However, the existing vibration head has the following problems when used Shortcomings: [0003] 1. When the current excitation head is used, the device is installed on the side wall of the flange, so that the overall vibration amplitude of the post insulator will be affected by the weight of the excitation head; [0004] 2. After the current collision head collides with the flange, the rebound after the collision of...

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Problems solved by technology

[0003] 1. When the current excitation head is used, the device is installed on the side wall of the flange, so that the overall vibration amplitude of the post insulator will be affected by the weight of the excitation head;

[0004] 2. After the current collision head collides with the flange, the rebound after the collision of the collision head will cause secondary or even multiple collisions with the vibrating post insulator, which will cause errors in the detection of the vibration effect;

[0005] 3. The excitation head in the prior art can only achieve single-point collision, which affects the scope of its use

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