CN219552331U - Weak magnetism nondestructive detector suitable for solid of revolution part curved surface - Google Patents

Abstract

The utility model discloses and provides a weak magnetic non-destructive detector suitable for the curved surface of a rotating body part. The detector includes 5 weak magnetic sensors and track bodies, and the adjacent track bodies are connected by damping hinges. The magnetic sensors are arranged and distributed in the slideways on each track body to form an array type magnetic field weakening measuring instrument. The sensor array matches the sample to be tested, ensuring that the detection direction of each sensor is perpendicular to the surface of the test piece. Secondly, the mobile handle is fixed outside the magnetic field weakening sensor, so the operator can simultaneously operate multiple mobile handles for detection, which realizes the detection consistency of each sensor.

Description

A Weak Magnetic Nondestructive Detector Applicable to the Curved Surface of Revolving Parts

technical field

The utility model belongs to the technical field of weak magnetic non-destructive detection, in particular to a weak magnetic non-destructive detector suitable for the curved surface of rotary body parts.

Background technique

Weak magnetic non-destructive testing technology is a non-destructive testing method that uses a magnetic vector sensor to scan the surface or near the surface of the test object in the environment of the natural geomagnetic field, and judges whether there is a defect in the test sample according to the change of the magnetic induction intensity in different directions. Detection Technology.

When the magnetic field-weakening non-destructive testing instrument performs mobile detection, it needs to move the magnetic-weakening sensor along a fixed direction on the surface of the tested piece. Since the tested pieces have various shapes, the detection surface is not a flat surface. The currently used magnetic-weakening non-destructive testing The instrument cannot accurately and comprehensively scan the inspected samples with various shapes, and cannot comprehensively analyze the basic shape of internal defects.

Utility model content

The utility model aims at the problems existing in the above-mentioned prior art, and provides a weak magnetic non-destructive detector suitable for the curved surface of the rotating body parts. The detector includes 5 weak magnetic sensors and track bodies, and the damping Connected by hinges, 5 magnetic field weakening sensors are arranged and distributed in the slideways on each track body to form an array type magnetic field weakening measuring instrument. The sensor array matches the sample to be tested to ensure that the detection direction of each sensor is perpendicular to the surface of the test piece. Secondly, the mobile handle is fixed outside the magnetic field-weakening sensor, so the operator can simultaneously operate multiple mobile handles for detection, which realizes the detection consistency of each sensor.

The technical scheme that the utility model adopts:

A magnetic field-weakening nondestructive detector suitable for curved surfaces of rotating parts, including:

track body;

Weak magnetic sensor, slidingly set on the track body;

The moving handle is located on the back of the track body and is connected to the weak magnetic sensor.

In the above technical solution, preferably, the track body includes several track units;

Adjacent track units are connected by damping hinges;

The track unit is provided with a slideway along its length, the slideway runs through to the back of the track unit, and the magnetic field weakening sensor is located in the slideway.

In the above technical solution, further, the moving handle is located on the back of the track unit, and extends into the slideway to connect with the magnetic field weakening sensor.

In the above technical solution, further preferably, the part of the moving handle located in the slideway is provided with a placing platform, and the magnetic field weakening sensor is arranged on the placing platform.

Preferably, fixed suction cups are provided on the front surfaces of the track units at the two edges.

In the above technical solution, it is further defined that a boss is provided on the outer side of the track unit on the edge of the slideway, and the fixed suction cups are located at the upper and lower corners of the boss.

Preferably, the top of the slideway runs through the track body.

Compared with the prior art, the beneficial effects of the utility model are:

The array-type weak magnetic sensor designed in this application, the sensor array fits with the sample to be tested, ensuring that the detection direction of each sensor is perpendicular to the surface of the test piece; at the same time, the weak magnetic sensor is matched with the slideway, which has good stability in movement And linearity, avoiding the instability of the previous hand-held; secondly, a mobile handle is designed on the back of the weak magnetic sensor, the operator can operate multiple mobile handles for detection at the same time, and the detection consistency of each sensor is realized. The device has high detection efficiency and strong adaptability, and can be applied to test pieces of different structural sizes. The basic shape of the internal defect can be obtained through comprehensive analysis by using multiple sets of magnetic induction intensity curves obtained from the above-mentioned array type magnetic field weakening sensor test.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

FIG. 1 is a schematic diagram of a magnetic field-weakening nondestructive detector in the present invention.

Fig. 2 is a state diagram of the magnetic field weakening nondestructive detector in use in the present invention.

Among them, 1-track unit; 101-slide; 2-weakening magnetic sensor; 3-moving handle; 4-damping hinge; 5-fixed suction cup.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Example

This embodiment provides a magnetic-weakening non-destructive detector suitable for the curved surface of rotating parts, which can use the magnetic-weakening detection technology for surface damage identification for different surfaces. Its structure is shown in Figure 1 and Figure 2, including the track body 1 , there are a plurality of magnetic field weakening sensors 2 arranged in an array on the track body 1, and the magnetic field weakening sensors 2 can slide on the track body 1. The above-mentioned structure designed can detect surfaces with different shapes and improve the detection efficiency. Multiple sets of magnetic induction intensity curves can comprehensively analyze the basic shape of internal defects.

Specifically, the track body includes several track units 1, and the adjacent track units 1 are connected by damping hinges 4. The track unit 1 is provided with a slideway 101 along its length, and the slideway 101 runs through to the track On the back of the unit 1, the magnetic field weakening sensor 2 is located in the slideway.

The magnetic field weakening sensor 2 can slide along the slideway 101, has good stability and linearity, and avoids the unstable situation of hand-held devices in the past.

In order to improve the convenience of operation, a mobile handle 3 is designed on the back of the slideway 101. The mobile handle 3 extends into the slideway 101 and is connected with the weak magnetic sensor 2. In order to improve the stability of the connection, the mobile handle 3 is located on the slide The part in the lane is provided with a placing platform, and the magnetic field weakening sensor 2 is arranged on the placing platform. Based on the design of the mobile handle 3, the operator can simultaneously operate multiple mobile handles for detection, which realizes the detection consistency of each sensor.

And on the track unit 1 of the edge, a boss is arranged on the part outside the slideway 101, and a fixed sucker 5 is respectively fixed at the upper and lower corners of the boss. The weak magnetic field nondestructive detector is fixed on the leveling oil cylinder by using the fixed suction cup 5, and the sensor array matches the sample to be tested, so as to ensure that the detection direction of each sensor is perpendicular to the surface of the test piece.

The main improvement of the new model lies in the detection probe part, how to reasonably distribute the detection probes to realize multiple weak magnetic sensor probes to scan the time surface at the same time, so as to obtain multiple sets of magnetic induction intensity curves, and can comprehensively analyze the basic shape of internal defects.

In addition to the new and improved magnetic-weakening detection probe, the magnetic-weakening non-destructive testing of the curved surface of the rotary part also includes a signal acquisition system, a communication system, a power supply, etc., and these components must exist in the magnetic-weakening non-destructive testing equipment. Since the present application does not improve the above-mentioned components, details will not be repeated here. The magnetic field weakening signal collected by the magnetic field weakening nondestructive detector (probe) of this new design is converted and amplified by the acquisition circuit, and output to the field weakening signal conditioning circuit for modulation. At the same time, the field weakening sensor 2 will collect the current probe temperature value for temperature compensation, and finally The modulated magnetic field weakening signal and temperature signal are collected and transmitted to the main control module for packaging and storage. Wireless communication transmits the collected data to a remote dedicated server to realize remote monitoring and data collection. Wired communication is mainly for on-site real-time monitoring.

Working principle: Place the test piece in the geomagnetic field. If the material of the material is a continuous and uniform ferromagnetic substance or paramagnetic substance, the magnetic induction line will be constrained in the material; but when there are discontinuous defects in the material, the material will The organizational state of the material will change the magnetic permeability, and the magnetic anomaly will occur at the discontinuity of the material. If the relative magnetic permeability of the material itself is greater than the relative magnetic permeability of the defect in the material, the magnetic induction intensity on the surface of the test piece at the defect will become larger, and the magnetic induction line will appear as an upward bulge. On the contrary, if the relative magnetic permeability of the material itself is smaller than that of the discontinuous defect in the material, the magnetic induction line appears to be concave downward. Weak magnetic nondestructive testing technology is to use the magnetic sensor to measure the magnetic induction intensity on the surface of the test piece to judge whether there are defects in the material. During the specific detection, the weak magnetic sensor probe is close to the surface of the measured object, and the weak magnetic sensor probe is moved slowly and evenly by moving the handle to realize the detection of the measured object surface. During the detection process, the closer the probe is, the more accurate it is.

The above is only a preferred embodiment of the utility model, and does not make any limitation to the utility model. Any simple modification, change and equivalent change made to the above embodiments according to the technical essence of the utility model still belong to the utility model. Within the scope of protection of new technical solutions.

Claims (7)

1. A weak magnetic nondestructive detector suitable for curved surfaces of rotating parts, characterized in that it comprises: track body; Weak magnetic sensor, slidingly set on the track body; The moving handle is located on the back of the track body and is connected to the weak magnetic sensor. 2. A magnetic field-weakening nondestructive detector suitable for curved surfaces of revolving parts according to claim 1, wherein the track body includes several track units; Adjacent track units are connected by damping hinges; The track unit is provided with a slideway along its length, the slideway runs through to the back of the track unit, and the magnetic field weakening sensor is located in the slideway. 3. A magnetic field-weakening non-destructive detector suitable for curved surfaces of revolving parts according to claim 2, wherein the moving handle is located on the back of the track unit and extends into the slideway to connect with the field-weakening sensor. 4. A magnetic field-weakening nondestructive detector suitable for curved surfaces of revolving parts according to claim 3, characterized in that, the part of the moving handle located in the slideway is provided with a placing platform, and the magnetic field-weakening sensor is arranged on a place where the on stage. 5 . The magnetic field-weakening nondestructive detector suitable for the curved surface of revolving parts according to claim 2 , characterized in that, fixed suction cups are provided on the front surfaces of the track units on both edges. 5 . 6. A magnetic field-weakening nondestructive detector suitable for curved surfaces of rotating parts according to claim 5, characterized in that, the part of the edge track unit located outside the slideway is provided with a boss, and the fixed suction cup is located on the boss. The upper and lower corners of the table. 7 . The magnetic field-weakening nondestructive detector suitable for the curved surface of revolving parts according to claim 2 , wherein the top of the slideway runs through the track body. 8 .