CN211927789U

CN211927789U - Adjustable electromagnetic nondestructive test probe device

Info

Publication number: CN211927789U
Application number: CN202020613644.9U
Authority: CN
Inventors: 王任亮; 史保华; 班福厚
Original assignee: Baoding New Yunda Electric Equipment Co ltd
Current assignee: Baoding New Yunda Electric Equipment Co ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-11-13
Anticipated expiration: 2030-04-22

Abstract

The utility model discloses an adjustable electromagnetic nondestructive testing probe device, which comprises a U-shaped fixed bottom frame, two roller fixed plates and rollers, wherein the U-shaped fixed bottom frame is arranged on the detection surface of a pipe in a crossing manner, the two roller fixed plates are arranged right above the U-shaped fixed bottom frame and are mutually hinged, the rollers are rotatably arranged at the bottom ends of the roller fixed plates, and a spiral adjusting device for adjusting the angle between the two roller fixed plates is respectively connected and arranged between the two roller fixed plates and the U-shaped fixed bottom frame; the front end of the U-shaped fixed bottom frame extends to be provided with an electromagnetic detection probe which is used for emitting a magnetic field to a pipe detection surface and receiving a pipe electromagnetic eddy current signal. The utility model discloses a screw adjusting device adjusts the angle between the two gyro wheel fixed plates, can drive the high emergence of two gyro wheels and change, further adjusts the lift between electromagnetic detection probe and the tubular product detection face from the height for this device can be satisfied with the detection in multiple specification model, diameter tubular product, makes the suitability of this device stronger.

Description

Adjustable electromagnetic nondestructive test probe device

Technical Field

The utility model relates to a probe unit technical field, more specifically relate to an adjustable electromagnetism nondestructive test probe unit.

Background

The probe belongs to an induction detecting device, and when the probe is close to a measured object, the probe can detect the measured object for corresponding purposes. The probes are usually provided with sensors, and different sensors can achieve different detection purposes.

When the existing probe device is used for detecting pipes with different diameters, the structure is relatively fixed, the probe device can only be suitable for detecting the pipes with one specification and model, and the pipes are cylindrical magnetic conductive materials such as oil conveying steel pipes, gas conveying steel pipes and the like. When the diameter of the pipe changes, the distance between the detection part of the probe device and the detection surface of the pipe changes correspondingly, so that the data after detection is inaccurate, and the aims of effectively detecting the resolution and the precision cannot be fulfilled. In addition, the existing detection mode is that the manual handheld probe device moves on the surface of the pipe, large friction exists between the contact surface of the probe device and the pipe, the movement is not very convenient, and the sensor parts can be scratched carelessly.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that needs to solve provides an adjustable electromagnetism nondestructive test probe unit to solve the problem that current probe unit can't be applicable to different specification model tubular product and detect, so that this device can satisfy in the detection of multiple specification model tubular product, make the suitability of this device stronger, with the realization remove more convenient purpose in the testing process, with improve the detection precision, improve detection speed, reduce the influence of human factor etc. to the testing result.

In order to solve the technical problem, the utility model adopts the following technical proposal.

An adjustable electromagnetic nondestructive testing probe device comprises a U-shaped fixed bottom frame, two roller fixing plates and rollers, wherein the U-shaped fixed bottom frame is arranged on a pipe testing surface in a spanning mode, the two roller fixing plates are arranged right above the U-shaped fixed bottom frame and are hinged to each other, the rollers are rotatably arranged at the bottom ends of the roller fixing plates, and spiral adjusting devices for adjusting the angle between the two roller fixing plates are respectively connected and arranged between the two roller fixing plates and the U-shaped fixed bottom frame; the front end of the U-shaped fixed bottom frame extends to be provided with an electromagnetic detection probe which is used for emitting a magnetic field to a pipe detection surface and receiving a pipe electromagnetic eddy current signal.

Further optimize technical scheme, spiral adjusting device is including corresponding respectively and seting up the screw hole on fixed underframe of U type and gyro wheel fixed plate and threaded connection at two threaded hole internal adjustment screw rod that is used for adjusting the interval and then adjust the angle between two gyro wheel fixed plates between fixed underframe of U type and the gyro wheel fixed plate.

Further optimize technical scheme, the electromagnetic detection probe is including extending the fixed frame of U type that sets up at the fixed underframe front end of U type, fixed setting is in the inside magnetic field emission structure that is used for transmitting magnetic field of the fixed frame of U type and the fixed magnetic field receiving structure that is used for receiving tubular product electromagnetic eddy current signal that sets up on the magnetic field emission structure.

According to the technical scheme, the magnetic field emission structure comprises a U-shaped excitation iron core fixedly arranged in a U-shaped fixing frame and an excitation coil wound on the U-shaped excitation iron core.

According to the technical scheme, the magnetic field receiving structure comprises a printed circuit board transversely and fixedly arranged in the middle of the U-shaped excitation iron core and a row of electromagnetic sensors electrically connected to the bottom end face of the printed circuit board.

Further optimize technical scheme, the gyro wheel passes through the gyro wheel support and rotates the setting on the gyro wheel fixed plate.

According to the technical scheme, the top end face of the roller fixing plate is fixedly provided with a handrail convenient for being held by hands.

Due to the adoption of the technical scheme, the utility model has the following technical progress.

The utility model discloses simple structure, the flexible to use is convenient, can guarantee to detect the precision, be particularly useful for the nondestructive test of major diameter tubular product, adjust angle between two gyro wheel fixed plates through spiral adjusting device, can drive the high emergence change of two gyro wheels, further adjust carrying away from the height between electromagnetic sensor and the tubular product detection face on the electromagnetic detection probe, make this device can satisfy in the detection of multiple specification model, diameter tubular product, make the suitability of this device stronger, it can realize removing more convenient purpose in the testing process to rotate the gyro wheel that sets up in gyro wheel fixed plate bottom.

The utility model discloses a screw adjusting device can adjust the height of gyro wheel and the angle between the two gyro wheel fixed plates, has guaranteed promptly that carrying of plane test is from the height, guarantees again that carrying of curved surface test is from the highly uniform.

Drawings

Fig. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a second schematic structural view of the present invention;

fig. 4 is the structure diagram of the present invention when actually inspecting the pipe.

Wherein: 1. u-shaped fixed underframe, 2, spiral adjusting device, 21, adjusting screw, 3, roller fixed plate, 4, hinge shaft, 5, roller support, 6, roller, 7, handrail, 8, electromagnetic detection probe, 81, U-shaped fixed frame, 82, exciting coil, 83, printed circuit board, 84, electromagnetic sensor, 9 and pipe.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

An adjustable electromagnetic nondestructive detection probe device is shown in a combined figure 1-4 and comprises a U-shaped fixed bottom frame 1, a roller fixing plate 3, a roller 6, a spiral adjusting device 2 and an electromagnetic detection probe 8.

The U-shaped fixed bottom frame 1 is arranged on the pipe detection surface in a spanning mode and can move along the pipe 9 under the action of the roller 6.

The roller fixing plates 3 are arranged in two positions right above the U-shaped fixing bottom frame 1 and hinged to each other, and the two roller fixing plates 3 are hinged to each other through hinge shafts 4.

The gyro wheel 6 rotates and sets up in gyro wheel fixed plate 3 bottom, and gyro wheel 6 rotates through gyro wheel support 5 and sets up on gyro wheel fixed plate 3. Under the pushing action of the human hand, the whole driving device moves along the pipe 9. The arrangement of the roller 6 greatly reduces the friction between the device and the contact surface of the pipe, so that the device can move on the pipe more conveniently, and the electromagnetic sensor is ensured to have the same lifting height in the test process.

Screw adjusting devices 2 are respectively connected and arranged between the two roller fixing plates 3 and the U-shaped fixing bottom frame 1 and used for adjusting the angle between the two roller fixing plates 3. The screw adjusting device 2 comprises threaded holes respectively arranged on the U-shaped fixing bottom frame 1 and the roller fixing plate 3 correspondingly and an adjusting screw 21 in threaded connection with the two threaded holes. Adjusting screw 21 is used for adjusting the interval between fixed underframe 1 of U type and the gyro wheel fixed plate 3, and then adjusts the angle between two gyro wheel fixed plates 3, and the height that can drive two gyro wheels 6 when the angle changes between two gyro wheel fixed plates 3 changes, can further adjust the interval between electromagnetic detection probe 8 and the tubular product detection face when the detection face of gyro wheel 6 and tubular product contacts.

The electromagnetic detection probe 8 is arranged at the front end of the U-shaped fixed bottom frame 1 in an extending mode and used for emitting a magnetic field to the pipe detection surface and receiving pipe electromagnetic eddy current signals.

The electromagnetic detection probe 8 includes a U-shaped fixing frame 81, a magnetic field emission structure, and a magnetic field reception structure. The U-shaped fixing frame 81 is extended and arranged at the front end of the U-shaped fixing bottom frame 1. The magnetic field emission structure is fixedly arranged inside the U-shaped fixing frame 81 and used for emitting a magnetic field to magnetize the pipe. The magnetic field receiving structure is fixedly arranged on the magnetic field transmitting structure and used for receiving the electromagnetic eddy current signals of the pipe.

The magnetic field emission structure comprises a U-shaped excitation iron core and an excitation coil. The U-shaped field core is fixedly disposed in the U-shaped fixing frame 81. The excitation coil 82 is wound around the U-shaped field core.

The magnetic field receiving structure includes a printed wiring board 83 and an electromagnetic sensor 84. The printed wiring board 83 is transversely fixed at the center of the U-shaped field core. The electromagnetic sensors 84 are arranged in a row and electrically connected to the bottom end surface of the printed wiring board 83. The model of the middle electromagnetic sensor 84 of the present invention can be a Hall (Hall) electromagnetic sensor. The signal output end of the electromagnetic sensor 84 is connected to the input end of the receiving circuit, and the signal output by the receiving circuit is input to the FPGA device after being AD-converted by the AD converter, and is processed and analyzed by the FPGA device to judge whether the pipe has defects. The FPGA device is connected to the input end of the exciting coil through an exciting circuit and used for controlling whether the exciting coil is electrified or not.

The utility model discloses well electromagnetic sensor 84's the vertical interval between bottommost and the tubular product detection face is fixed value 0.5mm-5mm, promptly in the testing process, the effective detection of this device can be realized to vertical interval between the two in keeping 0.5mm-5 mm.

The top end face of the roller fixing plate 3 is fixedly provided with a handrail 7, and the handrail 7 is convenient for being held by hands.

The utility model discloses when carrying out actual detection to tubular product, according to the diameter of tubular product 9, adjust the angle between two gyro wheel fixed plates 3 through spiral adjusting device 2 correspondingly. Namely, the hand is screwed in or unscrewed to adjust the screw rod 21, the distance between the roller fixing plate 3 and the U-shaped fixing bottom frame is changed, the purpose of adjustment is realized, two rollers 6 arranged below the two roller fixing plates 3 are simultaneously contacted with the detection surface of the pipe, and the adjustment is stopped until the vertical distance between the bottommost end of the electromagnetic sensor 84 and the detection surface of the pipe is 0.5mm-5 mm. Therefore, the lifting height is unchanged during the curved surface test, and the consistency, effectiveness, accuracy and precision of the test are ensured. At this time, the bottom end of the roller 6 is lower than the bottom end of the electromagnetic sensor 84, so that the electromagnetic sensor 84 and the detection surface of the pipe have a certain distance.

The hand holds the handrail 7 to push the device to move along the detection surface of the pipe. The magnetic field emission structure emits a magnetic field, after the pipe is magnetized, when the detection surface of the pipe is defective, the pipe can generate an electromagnetic eddy current signal, the electromagnetic eddy current signal is received by the electromagnetic sensor 84, and whether the detection surface of the pipe is defective or not is judged according to the receiving condition of the magnetic field.

Claims

1. The utility model provides an adjustable electromagnetism nondestructive test probe unit which characterized in that: the device comprises a U-shaped fixed bottom frame (1) arranged on a pipe detection surface in a crossing mode, two roller fixing plates (3) which are arranged right above the U-shaped fixed bottom frame (1) and hinged to each other, and rollers (6) rotatably arranged at the bottom ends of the roller fixing plates (3), wherein spiral adjusting devices (2) used for adjusting the angle between the two roller fixing plates (3) are respectively connected between the two roller fixing plates (3) and the U-shaped fixed bottom frame (1); the front end of the U-shaped fixed bottom frame (1) is provided with an electromagnetic detection probe (8) which is used for emitting a magnetic field to a pipe detection surface and receiving a pipe electromagnetic eddy current signal in an extending mode.

2. The tunable electromagnetic nondestructive inspection probe apparatus of claim 1 wherein: the screw adjusting device (2) comprises threaded holes which are respectively and correspondingly formed in the U-shaped fixing bottom frame (1) and the roller fixing plates (3) and adjusting screws (21) which are in threaded connection with the two threaded holes and used for adjusting the distance between the U-shaped fixing bottom frame (1) and the roller fixing plates (3) and further adjusting the angle between the two roller fixing plates (3).

3. The tunable electromagnetic nondestructive inspection probe apparatus of claim 1 wherein: the electromagnetic detection probe (8) comprises a U-shaped fixing frame (81) extending to be arranged at the front end of the U-shaped fixing bottom frame (1), a magnetic field emission structure fixedly arranged in the U-shaped fixing frame (81) and used for emitting a magnetic field, and a magnetic field receiving structure fixedly arranged on the magnetic field emission structure and used for receiving electromagnetic eddy current signals of the pipe.

4. The tunable electromagnetic nondestructive inspection probe device of claim 3 wherein: the magnetic field emission structure comprises a U-shaped excitation iron core fixedly arranged in a U-shaped fixing frame (81) and an excitation coil (82) wound on the U-shaped excitation iron core.

5. The tunable electromagnetic nondestructive inspection probe device of claim 3 wherein: the magnetic field receiving structure comprises a printed circuit board (83) transversely and fixedly arranged in the middle of the U-shaped excitation iron core and a row of electromagnetic sensors (84) electrically connected to the bottom end face of the printed circuit board (83).

6. The tunable electromagnetic nondestructive inspection probe apparatus of claim 1 wherein: the roller (6) is rotatably arranged on the roller fixing plate (3) through the roller bracket (5).

7. The tunable electromagnetic nondestructive inspection probe apparatus of claim 1 wherein: the top end face of the roller fixing plate (3) is fixedly provided with a handrail (7) which is convenient for a person to hold.