CN210347537U

CN210347537U - Inner bore magnetic particle flaw detector

Info

Publication number: CN210347537U
Application number: CN201921068802.0U
Authority: CN
Inventors: 王首镔
Original assignee: Dawatchi Tianjin Technology Development Co Ltd
Current assignee: Dawatchi Tianjin Technology Development Co Ltd
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-04-17
Anticipated expiration: 2029-07-10

Abstract

The utility model discloses a hole magnetic particle flaw detector, including hole magnetic particle flaw detector, hole magnetic particle flaw detector passes through the wire and connects magnetization mechanism, hole magnetic particle flaw detector passes through the switching connection power, magnetization mechanism includes casing, iron core, coil, standing groove and bar magnet, the inside fixed grafting of casing has the iron core, the coil has all been cup jointed to the outside upper portion left and right sides of iron core, the standing groove has all been opened to the upper end of iron core, the bar magnet has been placed in the inside activity of standing groove, inside miniwatt silicon controlled rectifier trigger circuit, the high-power pulse transformer trigger circuit and the pulse transformer of being equipped with of hole magnetic particle flaw detector. The inner hole magnetic particle flaw detector solves the problem of detecting cracks in the circumferential direction of the inner hole of a small annular workpiece with a certain thickness, has the functions of demagnetization and a rotating magnetic field, and can be connected with a common magnetic yoke probe to carry out conventional manual magnetic particle flaw detection.

Description

Inner bore magnetic particle flaw detector

Technical Field

The utility model relates to an electric power tech field specifically is a hole magnetic particle flaw detector.

Background

The magnetic powder inspection is based on the magnetic interaction between a leakage magnetic field at a defect and magnetic powder, after a ferromagnetic material or a workpiece is magnetized, magnetic lines of force at the defect on the surface and the near surface deform to escape from the surface of the workpiece to form a detectable leakage magnetic field, and at the moment, magnetic powder is scattered on the surface of the workpiece or magnetic suspension is poured on the surface of the workpiece, magnetic powder particles are adsorbed in a defect area to display the position, the shape and the size of the defect, which is the basic principle of magnetic powder inspection.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an inner hole magnetic particle flaw detector to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an inner hole magnetic particle flaw detector, includes the inner hole magnetic particle flaw detector, the inner hole magnetic particle flaw detector passes through the wire and connects magnetization mechanism, the inner hole magnetic particle flaw detector passes through the switch connection power, magnetization mechanism includes casing, iron core, coil, standing groove and bar magnet, the inside of casing is fixed to be pegged graft and is had the iron core, the iron core is "U" shape, the coil has all been cup jointed to the outside upper portion left and right sides of iron core, the standing groove has all been opened to the upper end of iron core, the bar magnet has been placed in the inside activity of standing groove, inside miniwatt silicon controlled rectifier trigger circuit, high-power pulse transformer trigger circuit and the pulse transformer of being equipped with of inner hole magnetic particle.

Preferably, the pulse transformer is connected with a processor inside the bore magnetic particle flaw detector through a lead, and the output ends of the trigger circuit of the low-power silicon controlled rectifier and the trigger circuit of the high-power pulse transformer are connected with the processor.

Preferably, the low-power silicon controlled rectifier trigger circuit consists of an MOC3022 chip and a resistor, the MOC3022 chip pin 1 and the MOC3022 pin 2 are signal input ends, the MOC3022 chip pin 1 is connected with a positive 5V power supply through a resistor R10, the MOC3022 chip pin 6 is connected with a pulse transformer input end through a resistor R11, and the MOC3022 chip pin 4 is connected with the pulse transformer input end and is grounded.

Preferably, the triggering circuit of the high-power pulse transformer comprises a PC817 chip, a capacitor, a resistor, a triode and a diode, wherein a pin 1 of the PC817 chip is connected with a resistor R4, a resistor R5 and a resistor R6, the resistor R6 is connected with a positive 5V power supply, the resistor R4 is connected with a signal input end, a pin 2 of the PC817 chip is connected with a signal input end, the resistor R5 is connected between the two input ends, a pin 3 of the PC817 chip is connected with a resistor R7 and a base of the triode Q1, an emitter of the triode Q1 is connected with a cathode of a diode D1, an anode of the diode D1 is connected with the resistor R7, an anode of the diode D1 is grounded, an emitter of a base of the triode Q1 is connected with the input end of the pulse transformer through a wire, a pin 4 of the PC817 chip is connected with a collector of the triode Q1 and the resistor R686r 8, the resistor R8 is connected, the diode D3 is connected with the diode D2 in parallel, the diode D2 is connected with a P3 pin of the processor, the diode D3 is connected with the input end of the pulse transformer after being connected with the diode D2 in parallel, the negative electrode of the diode D2 is connected with the capacitor C4 and the resistor R9 in series, and the capacitor C4 and the resistor R9 are connected with each other in parallel and grounded.

Compared with the prior art, the beneficial effects of the utility model are that: this hole magnetic particle flaw detector has solved the small-size annular work piece hole circumferencial direction crack detection problem that has certain thickness, and split type design can redefine the magnetization unit appearance according to the work piece shape, can use with fixed magnetic particle flaw detector combination, has compensatied fixed magnetic particle flaw detector and can't detect the not enough of small-size annular work piece hole circumferencial crack, has demagnetization and rotating field function, can connect ordinary yoke probe and carry out conventional manual magnetic particle flaw detection.

Drawings

FIG. 1 is a schematic block diagram of the present invention;

fig. 2 is a sectional view of the magnetizing mechanism of the present invention;

FIG. 3 is a diagram of the trigger circuit of the low power thyristor of the present invention;

fig. 4 is a circuit diagram of the trigger circuit of the high-power pulse transformer of the present invention.

In the figure: 1 inner hole magnetic particle flaw detector, 2 magnetizing mechanism, 21 shell, 22 iron core, 23 coil, 24 placing groove, 25 magnetic bar and 3 power supply.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides an inner bore magnetic particle flaw detector, includes inner bore magnetic particle flaw detector 1, and inner bore magnetic particle flaw detector 1's model is OMY-500, and other mechanisms are unchangeable in inside, inner bore magnetic particle flaw detector 1 passes through the wire and connects magnetization mechanism 2, inner bore magnetic particle flaw detector 1 passes through switch connection power 3, magnetization mechanism 2 includes casing 21, iron core 22, coil 23, standing groove 24 and magnetic rod 25, iron core 22 is pegged graft to the inside fixed of casing 21, iron core 22 is "U" shape, coil 23 has all been cup jointed to the outside upper portion left and right sides of iron core 22, standing groove 24 has all been opened to the upper end of iron core 22, magnetic rod 25 has been placed in the inside activity of standing groove 24, penetrates the work piece on magnetic rod 25, places magnetic rod 25 inside standing groove 24 with both ends, adjusts the potentiometre to suitable electric current, sprays magnetic suspension to the work piece, magnetizes simultaneously, inner bore magnetic particle flaw detector 1 is inside to be equipped with silicon controlled rectifier trigger circuit of power, The high-power pulse transformer trigger circuit comprises a high-power pulse transformer trigger circuit and a pulse transformer, wherein the pulse transformer is connected with a processor inside the inner hole magnetic particle flaw detector 1 through a lead, and the output ends of the low-power silicon controlled rectifier trigger circuit and the high-power pulse transformer trigger circuit are connected with each other. The trigger circuit of miniwatt silicon controlled rectifier comprises MOC3022 chip and resistance, MOC3022 chip foot 1 and foot 2 are signal input end, MOC3022 chip foot 1 connects positive 5V power through resistance R10, MOC3022 chip foot 6 passes through resistance R11 and connects pulse transformer input, pulse transformer input and ground are connected to MOC3022 chip foot 4. The high-power pulse transformer trigger circuit comprises a PC817 chip, a capacitor, a resistor, a triode and a diode, wherein a pin 1 of the PC817 chip is connected with a resistor R4, a resistor R5 and a resistor R6, the resistor R6 is connected with a positive 5V power supply, the resistor R4 is connected with a signal input end, a pin 2 of the PC817 chip is connected with the signal input end, the resistor R5 is connected between the two input ends, a pin 3 of the PC817 chip is connected with a resistor R7 and a base electrode of a triode Q1, an emitter electrode of the triode Q1 is connected with a cathode of a diode D1, a positive electrode of a diode D1 is connected with a resistor R7, a positive electrode of the diode D1 is grounded, a base electrode of the triode Q1 is connected with the input end of a pulse transformer through a lead, a pin 4 of the PC817 chip is connected with a collector electrode of the triode Q1 and the resistor R8, the resistor R8 is connected with a diode D3, the diode D46, the diode D2 is connected with a P3 pin of the processor, the diode D3 is connected with the input end of the pulse transformer after being connected with the diode D2 in parallel, the negative electrode of the diode D2 is connected with the capacitor C4 and the resistor R9 in series, and the capacitor C4 is connected with the resistor R9 in parallel and is grounded.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an inner bore magnetic particle flaw detector, includes inner bore magnetic particle flaw detector (1), its characterized in that: hole magnetic particle flaw detector (1) passes through wire connection magnetization mechanism (2), hole magnetic particle flaw detector (1) passes through switch connection power (3), magnetization mechanism (2) are including casing (21), iron core (22), coil (23), standing groove (24) and bar magnet (25), iron core (22) have been pegged graft to the inside fixed of casing (21), iron core (22) are "U" shape, coil (23) have all been cup jointed on the outside upper portion left and right sides of iron core (22), standing groove (24) have all been opened to the upper end of iron core (22), bar magnet (25) have been placed in the inside activity of standing groove (24), hole magnetic particle flaw detector (1) inside is equipped with miniwatt silicon controlled rectifier trigger circuit, high-power pulse transformer trigger circuit and pulse transformer.

2. The bore magnetic particle flaw detector of claim 1, wherein: the pulse transformer is connected with a processor inside the inner hole magnetic particle flaw detector (1) through a lead, and the output ends of the low-power silicon controlled trigger circuit and the high-power pulse transformer trigger circuit are connected.

3. The bore magnetic particle flaw detector of claim 1, wherein: the trigger circuit of miniwatt silicon controlled rectifier comprises MOC3022 chip and resistance, MOC3022 chip foot 1 and foot 2 are signal input end, MOC3022 chip foot 1 connects positive 5V power through resistance R10, MOC3022 chip foot 6 passes through resistance R11 and connects pulse transformer input, pulse transformer input and ground are connected to MOC3022 chip foot 4.

4. The bore magnetic particle flaw detector of claim 1, wherein: the high-power pulse transformer trigger circuit comprises a PC817 chip, a capacitor, a resistor, a triode and a diode, wherein a pin 1 of the PC817 chip is connected with a resistor R4, a resistor R5 and a resistor R6, the resistor R6 is connected with a positive 5V power supply, the resistor R4 is connected with a signal input end, a pin 2 of the PC817 chip is connected with the signal input end, the resistor R5 is connected between the two input ends, a pin 3 of the PC817 chip is connected with a resistor R7 and a base electrode of a triode Q1, an emitter electrode of the triode Q1 is connected with a cathode of a diode D1, a positive electrode of a diode D1 is connected with a resistor R7, a positive electrode of the diode D1 is grounded, a base electrode of the triode Q1 is connected with the input end of a pulse transformer through a lead, a pin 4 of the PC817 chip is connected with a collector electrode of the triode Q1 and the resistor R8, the resistor R8 is connected with a diode D3, the diode D46, the diode D2 is connected with a P3 pin of the processor, the diode D3 is connected with the input end of the pulse transformer after being connected with the diode D2 in parallel, the negative electrode of the diode D2 is connected with the capacitor C4 and the resistor R9 in series, and the capacitor C4 is connected with the resistor R9 in parallel and is grounded.