CN219552331U

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

Info

Publication number: CN219552331U
Application number: CN202320479475.8U
Authority: CN
Inventors: 王胜科; 刘涛; 李志成; 赵建印; 葛睿; 纪红
Original assignee: Naval Aeronautical University
Current assignee: Naval Aeronautical University
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-08-18
Anticipated expiration: 2033-03-14

Abstract

The utility model discloses a weak magnetic nondestructive detector suitable for a curved surface of a revolving body part, which comprises 5 weak magnetic sensors and track bodies, wherein the adjacent track bodies are connected by damping hinge, and then the 5 weak magnetic sensors are distributed in a slideway on each track body in a arrayed weak magnetic measuring instrument, a sensor array is matched with a sample to be measured, and the detection direction of each sensor is ensured to be vertical to the surface of the sample. Secondly, the movable handles are fixed on the outer sides of the weak magnetic sensors, so that operators can operate a plurality of movable handles to detect simultaneously, and detection consistency of each sensor is achieved.

Description

Weak magnetism nondestructive detector suitable for solid of revolution part curved surface

Technical Field

The utility model belongs to the technical field of weak magnetic nondestructive detection, and particularly relates to a weak magnetic nondestructive detector suitable for curved surfaces of revolving parts.

Background

The weak magnetic nondestructive detection technology is a nondestructive detection technology for judging whether defects exist in a detection sample according to the changes of magnetic induction intensities in different directions by scanning the surface or near surface of a detection object through a magnetic vector sensor in the natural geomagnetic field environment.

When the weak magnetic nondestructive detector is used for mobile detection, the weak magnetic sensor needs to move along a fixed direction on the surface of a tested piece, and the shape of the tested piece is various, so that the detection surface is not a flat surface, the weak magnetic nondestructive detector used at present cannot accurately and comprehensively scan the tested sample pieces with various shapes, and the basic shape of the internal defects cannot be comprehensively analyzed.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model provides a weak magnetic nondestructive detector suitable for a curved surface of a revolving body part, which comprises 5 weak magnetic sensors and track bodies, wherein the adjacent track bodies are connected by damping hinges, the 5 weak magnetic sensors are distributed in a slideway on each track body in a arrayed weak magnetic measuring instrument, a sensor array is matched with a sample to be measured, and the detection direction of each sensor is ensured to be perpendicular to the surface of the sample. Secondly, the movable handles are fixed on the outer sides of the weak magnetic sensors, so that operators can operate a plurality of movable handles to detect simultaneously, and detection consistency of each sensor is achieved.

The utility model adopts the technical scheme that:

a weak magnetic nondestructive detector for a curved surface of a solid of revolution part, comprising:

a track body;

the weak magnetic sensor is arranged on the track body in a sliding manner;

the movable handle is positioned on the back surface of the track body and is connected with the weak magnetic sensor.

In the above technical solution, preferably, the track body includes a plurality of track units;

adjacent track units are connected through damping hinges;

the rail unit is provided with a slideway along the length direction of the rail unit, the slideway penetrates to the back of the rail unit, and the weak magnetic sensor is positioned in the slideway.

In the above technical scheme, further, the movable handle is located at the back of the track unit and extends into the slideway to be connected with the weak magnetic sensor.

In the above technical solution, it is further preferable that a portion of the moving handle located in the slideway is provided with a placement table, and the weak magnetic sensor is disposed on the placement table.

Preferably, the front faces of the rail units at the two edges are provided with fixed suckers.

In the above technical solution, further defined, a boss is disposed at a portion of the rail unit at the edge, which is located at the outer side of the slideway, and the fixing suction cup is located at an upper corner and a lower corner of the boss.

Preferably, the top of the slideway penetrates through the slideway body.

Compared with the prior art, the utility model has the beneficial effects that:

the array type weak magnetic sensor designed by the utility model has the advantages that the sensor array is matched with a sample to be detected, so that the detection direction of each sensor is vertical to the surface of the sample; meanwhile, the weak magnetic sensor is matched with the slideway, so that the mobile magnetic sensor has good stability and linearity, and the unstable condition of the traditional hand-held type is avoided; secondly, a movable handle is designed on the back of the weak magnetic sensor, and an operator can operate a plurality of movable handles to detect simultaneously, so that the detection consistency of each sensor is realized. The device has high detection efficiency and strong adaptability, and can be suitable for test pieces with different structural sizes. By utilizing the multiple groups of magnetic induction intensity curves obtained by the array type weak magnetic sensor test, the basic shape of the internal defect can be obtained by comprehensive analysis.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a field weakening nondestructive detector in accordance with the present utility model.

FIG. 2 is a state diagram of the weak magnetic nondestructive detector of the present utility model in use.

Wherein, 1-track units; 101-a slideway; 2-weak magnetic sensor; 3-moving the handle; 4-damped hinge; 5-fixing the sucker.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

The embodiment provides a weak magnetic nondestructive detector suitable for curved surfaces of revolving parts, which can identify surface damage by adopting weak magnetic detection technology aiming at different surfaces, has a structure shown in fig. 1 and 2, and comprises a track body 1, wherein a plurality of weak magnetic sensors 2 are arranged on the track body 1 in an array manner, the weak magnetic sensors 2 can slide on the track body 1, the designed structure can detect different surfaces, the detection efficiency is improved, and the basic shape of internal defects can be comprehensively analyzed by utilizing a plurality of groups of magnetic induction intensity curves obtained by testing.

Specifically, the track body includes a plurality of track unit 1, links to each other through damping hinge 4 between the adjacent track unit 1, be provided with on the track unit 1 along its length direction's slide 101, slide 101 runs through to track unit 1 back, weak magnetic sensor 2 is located the slide.

The weak magnetic sensor 2 can slide along the slideway 101, has good stability and linearity, and avoids the unstable condition of the prior hand-held type.

In order to improve the convenience of operation, a movable handle 3 is designed on the back of the slideway 101, the movable handle 3 stretches into the slideway 101 and is connected with a weak magnetic sensor 2, in order to improve the stability of connection, a placing table is arranged at the part of the movable handle 3 in the slideway, and the weak magnetic sensor 2 is arranged on the placing table. On the basis of designing the movable handles 3, operators can operate a plurality of movable handles simultaneously to detect, and detection consistency of each sensor is achieved.

And a boss is arranged on the part of the rail unit 1 at the edge, which is positioned at the outer side of the slideway 101, and a fixed sucker 5 is respectively fixed at the upper corner and the lower corner of the boss. And the weak magnetic nondestructive detector is fixed on the leveling oil cylinder by using the fixing sucker 5, and the sensor array is matched with the sample to be detected, so that the detection direction of each sensor is vertical to the surface of the test piece.

The utility model discloses main improvement lies in the detection probe part, how to realize a plurality of weak magnetic sensor probes with detection probe rational distribution and sweep the investigation to the time surface simultaneously to obtain multiunit magnetic induction intensity curve, can comprehensive analysis obtain the basic shape of internal defect.

The weak magnetic nondestructive detection of the curved surface of the revolving body part comprises a signal acquisition system, a communication system, a power supply and the like besides the novel improved weak magnetic detection probe, and the components are necessarily existing in the weak magnetic nondestructive detection equipment. Since the present utility model does not improve the above components, the details are not repeated here. The weak magnetic signal that the weak magnetic nondestructive detector (probe) of this novel design gathered is amplified through acquisition circuit conversion, exports weak magnetic signal conditioning circuit and modulates, and weak magnetic sensor 2 can gather current probe temperature value simultaneously and carry out temperature compensation, and the weak magnetic signal that will modulate and temperature signal collection transmission to main control module at last carry out the packing and store. The wireless communication transmits the collected data to a remote special server, so as to realize remote monitoring and data collection. The wired communication is mainly used for on-site real-time monitoring.

Working principle: placing the tested sample in the geomagnetic field, and if the material of the material is a continuous and uniform ferromagnetic substance or paramagnetic substance, restraining the magnetic induction lines in the material; however, when there are discontinuous defects in the material, the magnetic permeability of the material changes due to the structural state of the material, and magnetic anomalies occur due to the defects at the discontinuous positions of the material. If the relative magnetic permeability of the material is larger than that of the defect part in the material, the magnetic induction intensity of the surface of the test piece at the defect part becomes larger, and the magnetic induction lines are raised upwards. Conversely, if the relative permeability of the material itself is less than the relative permeability at the discontinuity in the material, the lines of magnetic induction appear to be recessed. The weak magnetic nondestructive detection technology is to measure the magnetic induction intensity of the surface of a test piece by using a magnetic measuring sensor so as to judge whether defects exist in the material. When the detection is carried out, the weak magnetic sensor probe is closely attached to the surface of the detected object, and the weak magnetic sensor probe is slowly and uniformly moved by the movable handle so as to realize the detection of the surface of the detected object.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, and any simple modification, variation and equivalent variation of the above embodiment according to the technical matter of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A weak magnetic nondestructive detector for a curved surface of a solid of revolution part, comprising:

a track body;

the weak magnetic sensor is arranged on the track body in a sliding manner;

2. The weak magnetic nondestructive detector for curved surface of revolution solid parts according to claim 1, wherein the track body comprises a plurality of track units;

adjacent track units are connected through damping hinges;

3. The weak magnetic nondestructive detector for curved surface of revolution solid parts according to claim 2, wherein the movable handle is positioned at the back of the track unit and extends into the slideway to be connected with the weak magnetic sensor.

4. A weak magnetic nondestructive detector for curved surface of revolution solid parts according to claim 3, wherein the part of the movable handle in the slideway is provided with a placing table, and the weak magnetic sensor is arranged on the placing table.

5. A field weakening nondestructive detector for curved surfaces of solid of revolution parts according to claim 2, wherein the front faces of the rail units at both edges are provided with fixed suction cups.

6. The weak magnetic nondestructive detector for curved surface of revolution solid parts according to claim 5, wherein the part of the rail unit at the edge, which is positioned outside the slideway, is provided with a boss, and the fixed sucker is positioned at the upper and lower corners of the boss.

7. The weak magnetic nondestructive detector for curved surface of revolution parts according to claim 2, wherein the top of the slideway penetrates the slideway body.