Distance-adjustable contact method detection device

Abstract

The invention discloses a distance-adjustable contact method detection device, which comprises a contact device I, a contact device II, a connecting device and a handle device, wherein the contact device I and the contact device II are connected by means of the connecting device, and the distance between the contact device I and the contact device II can be freely adjusted by means of the handle device installed on the contact device I and the contact device II; the contact device I and the contact device II are each provided with a contact rod by means of a fixed supporting device and a sliding supporting device, the contact rods are externally insulated magnetic pole rods, and the fixed supporting device and the sliding support device generate a magnetic field on the surface of a workpiece for detection after being electrified. The distance-adjustable contact method detection device is compact in structure, assembled in an accessory mode, convenient to assemble and disassemble, and convenient to carry on site. The distance-adjustable contact method detection device has the advantages that the distance can be flexibly adjusted, is convenient in adjustment during field detection, can realize single-person operation, sprays magnetic suspension while conducting magnetization, and improves the efficiency.

Description

technical field [0001] The invention relates to a detection device with an adjustable distance contact method, which is suitable for metal detection in industries such as special equipment and electric power, and belongs to the field of detection equipment. Background technique [0002] In magnetic particle testing, the contact method is widely used as an effective magnetization method in the special equipment industry. Generally, the detection device of the contact method is divided into two types: fixed type and non-fixed type. The fixed type contact device has a fixed distance during the detection time. When the site conditions are limited, the distance between the contacts cannot be adjusted. The non-fixed contact device requires two people to cooperate, one person operates the instrument to magnetize, and the other applies the magnetic suspension, and the distance between the contacts is not fixed, so it is impossible to effectively know the on-site process conditions, ...

AI Technical Summary

Problems solved by technology

Generally, the detection device of the contact method is divided into two types: fixed type and non-fixed type. The fixed type contact device has a fixed distance during the detection time. When the site conditions are limited, the distance between the contacts cannot be adjusted.

The non-fixed contact device requires two people to cooperate, one person operates the instrument to magnetize, and the other applies the magnetic suspension, and the distance between the contacts is not fixed, so it is impossible to effectively know the on-site process conditions, resulting in unstable magnetic field strength in the detection area

In the work of the above detection devices, the general contact method detection is limited by space limitations and on-site needs, which brings a lot of inconvenience to the actual magnetic particle detection.

[0003] In the on-site magnetic particle inspection, the conventional contact method detection device mainly has the following disadvantages: 1) In the non-fixed device contact method detection, one person needs to hold the handles on both sides with two hands, and the other person applies the magnetic suspension, Two people are required for simultaneous operation on site

In addition, the distance between the two contacts cannot be measured in time and effectively, and the effective detection range and sensitivity of on-site detection cannot be guaranteed.

2) When the fixed device contact method is used for detection, the spacing cannot be adjusted. According to the standard requirements, the contact spacing must be within a certain range. If it exceeds the effective spacing, the magnetic field in the detection area will be weak and the sensitivity will decrease, resulting in poor on-site detection results. , there is a risk of missed detection of defects

3) The fixed type is limited to the site space, and the limited area cannot be effectively detected due to the fixed device

Images