CN213633284U

CN213633284U - Rotating magnetic field flaw detector with flashlight

Info

Publication number: CN213633284U
Application number: CN202022298261.XU
Authority: CN
Inventors: 黄新超; 谷肖飞; 杨洁; 杨生辉
Original assignee: Zhengzhou Max Testing Technology Co ltd
Current assignee: Zhengzhou Max Testing Technology Co ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-07-06
Anticipated expiration: 2030-10-15

Abstract

A rotating magnetic field flaw detector with a flashlight comprises a cross magnetic yoke probe and a handheld body arranged on the upper portion of the cross magnetic yoke probe, wherein the handheld body comprises a handheld handle, a middle cross beam and a battery assembly; still set up flashlight lighting component in the handheld body, one side of handheld body is provided with the illumination head. The utility model integrates the strong light flashlight into the device, and the flashlight is not needed to be carried in the field detection, thereby the use is very convenient; the unique constant magnetic control is adopted, the output magnetic field is constant from full charge to exhaustion of the high-energy battery, and the density and the lifting force of the detection sensor are ensured; through the innovation of a magnetization mode, the innovation improvement of an iron core material and a structure, the innovation of a control mode and the like, a micro cross magnetic yoke, a control circuit, a high-energy battery, black/white light illumination, a flashlight and the like are integrated into a whole; the weight of the whole machine is reduced to more than two kilograms, and the whole machine is small and exquisite, so that the labor intensity is reduced, and the detection working efficiency is greatly improved.

Description

Rotating magnetic field flaw detector with flashlight

Technical Field

The utility model belongs to the technical field of the industry nondestructive test, concretely relates to from rotating magnetic field appearance of detecting a flaw of taking flashlight.

Background

The magnetic powder detection equipment is divided into a fixed type, a movable type and a portable type. The portable magnetic powder detection equipment is mainly divided into two types, one is a portable magnetic yoke flaw detector, and the other is a portable cross magnetic yoke flaw detector (also called a rotating magnetic field flaw detector).

1. Traditional rotating magnetic field flaw detector

The power supply is single-phase sinusoidal alternating current-220V/50 Hz (or 60 Hz), power frequency electricity for short, two groups of low-voltage (36V/50 Hz) alternating current are output through a controller and are connected with the cross magnetic yoke probe through a cable, the cross magnetic yoke probe magnetizes a workpiece, a rotating magnetic field is generated on the surface of the workpiece, the defects in all directions can be detected through one-time magnetization, the detection efficiency is high, and the nondestructive detection device is widely used in the field of nondestructive detection.

Since the development of magnetic particle testing in China, mainly the establishment of new China, the technology and equipment are adopted all the time, and are still the mainstream equipment of portable rotating magnetic field flaw detectors until now. There are problems in that: firstly, the device is heavy, the weight of the controller is about more than ten kilograms, the weight of the probe is about three kilograms, and the device is inconvenient to use due to the fact that the device also comprises a power line and a connecting cable; secondly, the device is unsafe, as mentioned above, the device adopts 220V alternating current, detection objects are ferromagnetic materials and conductors, potential safety hazards exist, and the device is unsafe when used in the field, high altitude and inside equipment; and thirdly, the appearance and the manufacturing process are rough, and the failure rate is high.

2. Battery-powered rotating magnetic field flaw detector-split machine

The traditional rotating magnetic field flaw detector can be used under the condition that a 220V alternating current power supply is needed. The detection labor intensity is high, and the working efficiency is low. Is not suitable for occasions such as field, high altitude, container interior and the like. In order to solve the problem, manufacturers at home and abroad produce a method which takes a rechargeable battery as an energy source, inverts direct current into alternating current by using an inverter and supplies power to a cross magnetic yoke probe, thereby solving the problem of inconvenient field power supply. The power supply problem has been solved to this equipment, but, field test needs to carry a portable power source (about two three kilograms of weight), still needs a connecting cable between portable power source and the cross yoke probe, and the connecting cable connects often to break down, uses still inconveniently.

3. Integrated rotating magnetic field flaw detector

In order to overcome the problems of a split type rotating magnetic field flaw detector, 2016, Zhengzhou Delong detection equipment, Inc. firstly introduced an integrated rotating magnetic field flaw detector, and the integrated rotating magnetic field flaw detector integrates a rechargeable battery, an inverter, a control circuit, a cross magnetic yoke probe, an LED black-white light illuminating lamp and the like into a whole and is designed into an integrated structure, so that the first international integrated rotating magnetic field flaw detector is developed. The equipment advances a great step from the technology, and is internationally leading, but has the problems of a bit heavy weight, 3.8 kg of the whole machine weight, long-time work and high labor intensity. Another problem is that the built-in rechargeable battery will decrease in both power and voltage with the increase of operating time, and in the low power section, the detection sensitivity will decrease, which results in missed detection.

An integral type rotating magnetic field flaw detector is also released to the internal Shenzhen company in 2018, and the not enough of this equipment existence is not from taking the flashlight, does not have the residual capacity instruction, and the charger is not general plug, and middle crossbeam width is too wide, and the influence is observed the detection region, and it is inconvenient to use, and three kilograms of complete machine weight are many, and weight is heavy, can increase the physical labor of testing personnel, reduces detection efficiency.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the rotating magnetic field flaw detector with the flashlight is provided.

The purpose of the utility model is realized with the following mode:

a rotating magnetic field flaw detector with a flashlight comprises a cross magnetic yoke probe 9 and a handheld body arranged on the upper portion of the cross magnetic yoke probe 9, wherein the handheld body comprises a handheld handle 4, a middle cross beam 8 and a battery assembly 7, and the handheld body and the cross magnetic yoke probe 9 are connected into a whole through the middle cross beam 8; still set up flashlight lighting component in the handheld body, one side of handheld body is provided with illumination head 2.

The flashlight lighting assembly comprises an LED lamp wick, a lamp wick radiator, a flashlight key switch 3 and a flashlight power panel which are arranged in the lighting head 2, the battery assembly 7 is connected with the flashlight power panel through the flashlight key switch, and the flashlight power panel outputs an electric signal to drive the LED lamp wick to emit light.

The cross magnetic yoke probe 9 comprises an iron core, coils wound on four oblique magnetic arms of the iron core and movable pulleys 13 arranged on magnetic feet at the lower parts of the four oblique magnetic arms; the iron core is a double-pi-shaped iron core.

The middle cross beam 8 comprises an internal double-Pi type iron core cross beam and a main control board, an LED illuminating lamp 12 is arranged on the lower portion of the middle cross beam 8, and the LED illuminating lamp 12 is connected with the battery component 7.

The main control board comprises an MCU and an H-bridge circuit composed of four MOS tubes, wherein the MCU controls the H-bridge circuit composed of the four MOS tubes through an MOS driver, outputs two groups of electric signals with a certain phase difference and is connected to two groups of coils of the crossed magnetic yoke probe.

The battery assembly 7 is a rechargeable battery and comprises a shell, and a battery management module and a lithium battery pack are arranged in the shell; be provided with charge indicator 5 and the jack that charges on the shell, charge indicator 5 and connect battery management module, battery management module connects lithium cell group.

The handheld handle 4 comprises a shell and a main loop boosting and voltage stabilizing module inside the shell, the main loop boosting and voltage stabilizing module is connected with the battery assembly and the main control board, a voltage signal is input to the main loop boosting and voltage stabilizing module through the power switch, and an output signal of the main loop boosting and voltage stabilizing module is connected with an input end of the main control board; and a shell of the hand-held handle 4 is provided with a flashlight key switch 3 and a magnetizing key switch 10 for controlling the on-off of the flaw detector.

The handheld body is further provided with a digital display voltmeter 6, and the digital display voltmeter 6 is connected with the battery pack.

The handheld body is also provided with a status indicator lamp and a power switch 1, and the status indicator lamp is connected with the main control panel; and the power switch is connected with the battery assembly 7 and the main loop boosting and voltage stabilizing module.

The utility model has the advantages that: compared with the prior art, the utility model has the advantages of it is following:

1. the highlight flashlight is integrated on the equipment, and the flashlight is not needed to be carried in field detection, so that the use is very convenient;

2. the detection device has unique constant magnetic control, the output magnetic field is constant from full charge to exhaustion of the high-energy battery, and the detection density and the lifting force are ensured;

3. equipment miniaturization: through the innovation of a magnetization mode, the innovation improvement of an iron core material and a structure, the innovation of a control mode and the like, a micro cross magnetic yoke, a control circuit, a high-energy battery, black/white light illumination, a flashlight and the like are integrated into a whole; the weight of the whole machine is reduced to more than two kilograms, and the whole machine is small and exquisite, so that the labor intensity is reduced, and the detection working efficiency is greatly improved;

4. and (3) dual electric quantity display: firstly, voltage is displayed in a digital display mode, and secondly, the LED indicator light is used for displaying, so that the electric quantity is monitored in real time;

5. the intelligent charging management module manages the charging of the high-energy battery, and is safe and reliable;

6. the cross magnetic yoke probe is integrally encapsulated, so that the waterproof performance and the safety performance of equipment are greatly enhanced;

7. the human engineering design, the hand feeling is comfortable, the weight is light, and the use is safe.

Drawings

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

Fig. 2 is a block diagram of the internal circuit of the present invention.

Fig. 3 is a schematic diagram of the circuit of the main control board of the present invention.

Fig. 4 is a circuit diagram of the battery management of the present invention.

The portable electronic device comprises a power switch 1, a lighting head 2, a flashlight key switch 3, a handheld handle 4, a charging indicator lamp 5, a digital display voltmeter 6, a battery pack 7, a middle cross beam 8, a cross magnetic yoke probe 9, a magnetizing key switch 10, a state indicator lamp 11, an LED illuminating lamp 12 and a pulley 13.

Detailed Description

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

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same technical meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and it should be further understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, devices, components, and/or combinations thereof.

In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only relational terms determined for convenience of describing structural relationships of the respective parts or elements of the present invention, and are not intended to refer to any part or element of the present invention, and are not to be construed as limiting the present invention.

In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and may be fixedly connected, or may be integrally connected or detachably connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.

The utility model provides a rotating magnetic field flaw detector with a flashlight, which is an integrated machine and comprises a cross magnetic yoke (also called rotating magnetic field) probe 9 and a handheld body arranged on the upper part of the cross magnetic yoke probe 9, wherein the handheld body comprises a handheld handle 4, a middle cross beam 8 and a battery component 7, and the handheld body and the cross magnetic yoke probe 9 are connected into a whole (the integrated machine) through the middle cross beam 8; still set up flashlight lighting component in the handheld body, one side of handheld body is provided with illumination head 2.

The flashlight lighting assembly is an on-site highlight flashlight and comprises an LED lamp wick, a lamp wick radiator, a flashlight key switch 3 and a flashlight power panel which are arranged in a lighting head 2, wherein the LED lamp wick, the lamp wick radiator and the flashlight driving power panel are all arranged inside a handheld body. The flashlight technique is prior art, and this patent only utilizes the utility model discloses the last battery pack from the area of the appearance of detecting a flaw provides the power for the highlight flashlight, and all parts of handle flashlight are all integrated to the utility model discloses on the appearance of detecting a flaw. The battery component is connected with a flashlight power supply board through a flashlight key switch 3, and the flashlight power supply board outputs an electric signal suitable for the LED lamp wick to drive the LED lamp wick to emit light. The purpose is that when the flashlight works in the field, in the equipment, at high altitude and other places with poor light, the flashlight does not need to be carried for illumination, and the use is very convenient.

The cross magnetic yoke probe 9 comprises a specially-made double-Pi-shaped iron core, coils wound on four inclined magnetic arms of the iron core and four magnetic feet mounting movable pulleys 13, the whole external rubber coating of the cross magnetic yoke probe is treated, and the cross magnetic yoke probe is insulated, collision-resistant, weather-resistant, ageing-resistant, waterproof and moisture-proof and protects internal coils.

The middle cross beam 8 is a common part of the upper handheld body and the lower crossed magnetic yoke probe 9 and comprises a main control board and a double-Pi-shaped iron core cross beam which are arranged inside; an LED (black light/white light) illuminating lamp 12 is arranged at the lower part of the middle cross beam 8, and the LED illuminating lamp 12 is connected with the battery component 7.

The LED illuminating lamp 12 is a working illuminating lamp used in magnetic powder detection and is connected with the main control board and the magnetizing switch 10. Two LED illuminating lamp wicks are arranged in the LED illuminating lamp, one is a white light LED lamp wick, and the other is a 365nm wavelength purple light (also called black light) lamp wick. The black light/white light double-light illumination is realized, and the fluorescent magnetic particle detector is not only suitable for fluorescent magnetic particle detection, but also suitable for non-fluorescent magnetic particle detection. The light conversion is realized by the magnetizing switch 10, so that the magnetizing switch 10 is actually a multifunctional switch. The LED illuminating lamp 12 is integrated into the instrument, and when magnetic powder is detected, a white light illuminating lamp and a black light lamp do not need to be additionally arranged, so that the energy is saved, and the instrument is practical and convenient.

The hand-held body comprises a hand-held handle 4, a middle cross beam 8 and a battery pack 7. The handheld body is characterized in that an illuminating head 2 is arranged on the upper portion of the left side of the handheld body, a flashlight key switch 3 is arranged at the top of the left side of the handheld body, a power switch 1 is arranged in the middle of the left side of the handheld body, a magnetizing key switch 10 is arranged on the upper left portion of the inner side of the handheld body, a replaceable battery assembly 7 is arranged on the right side of the handheld body, the flashlight key switch 3 and the power switch 1 are connected through the battery assembly, the flashlight key switch 3 is connected with a flashlight power panel, the flashlight power panel is connected with the illuminating head 2, the power switch 1 is connected with the power panel, the power panel is connected with a main control. And pressing down a magnetizing switch to generate a rotating magnetic field on the surface of the detected workpiece by the cross magnetic yoke probe.

The main control board is a core component of a main circuit in a product related to the patent, and is arranged inside the middle cross beam 8, and the main circuit comprises a battery assembly 7, a power switch 1, a voltage boosting and stabilizing module and a cross magnetic yoke probe, and is shown in figure 2. The battery component 7 provides energy for the whole instrument, voltage signals are input to the voltage boosting and stabilizing module through the power switch, although the voltage of the battery can be gradually reduced along with the service life, the voltage is boosted and kept constant (constant voltage) through the voltage boosting and stabilizing module, and output signals are connected with the input end of the main control panel.

The main control board takes the MCU as a core, controls an H bridge consisting of 4 MOS tubes, outputs 2 groups of electric signals with certain phase difference, is connected to 2 groups of coils of the cross magnetic yoke probe, and can be excited to output, and the circuit diagram of the main control board is shown in an attached figure 3. Under the condition that other conditions are not changed, the magnetic field intensity is in direct proportion to the current, so that the constant magnetic output is ensured by adopting a current control mode, when the current is smaller, the excitation voltage is increased, and otherwise, the excitation voltage is reduced. Therefore, the cross magnetic yoke probe is ensured to obtain a constant load signal on the coils of the 2 groups of the cross magnetic yoke probe, and the cross magnetic yoke probe is also ensured to generate a constant magnetic field on the surface of the detected workpiece. In other words, the constant magnetic control is realized, namely, the voltage is gradually reduced along with the service time from full electricity to exhaustion of the battery component 7, but the output magnetic field is constant, so that the detection sensitivity and the lifting force are ensured;

the battery assembly 7 comprises a shell, wherein a battery management module and a lithium battery pack are arranged in the shell; the shell is provided with a charging indicator lamp 5 and a charging jack. And the charging indicator lamp 5 is connected with the battery management module and indicates the charging state. The battery management module is connected with the lithium battery pack.

The battery management module adopts a lithium battery charging management integrated circuit in a PWM voltage reduction mode, independently and automatically manages the charging of the lithium battery, and has programmable charging current. When the battery voltage is detected to be low, the battery is subjected to heavy-current constant-current charging, wherein the charging current is a preset programming value; when the voltage of the battery reaches a certain value, the battery is trickle charged, and the trickle charging current is 15% of the constant current charging current, so that the purpose of protecting the battery is achieved. In addition, the battery management module has the protection functions of overvoltage, overcurrent, overcharge, overdischarge and the like, so that the safety of the battery is ensured. The circuit principle of the battery management module is shown in figure 4. The lithium battery pack can be a 18650 electric core, a lithium iron, a manganese lithium, a ternary lithium or a graphene battery, and is within the protection range of the patent.

The battery pack 7 is a rechargeable battery, and is connected with an external charger through a charging jack, and the charger is connected with the mains supply, so that the battery pack can be charged and used repeatedly.

The hand-held handle 4 comprises a shell, and a main loop boosting and voltage stabilizing module, a flashlight power panel and an LED lamp wick inside the shell. The main loop boosting and voltage stabilizing module is connected with the battery assembly and the main control board; the flashlight power panel is connected with the flashlight key switch 3 and the LED lamp core. The grip handle 4 further includes a magnetizing key switch 10 at a lower left portion.

Still be provided with digital display voltmeter 6 on the handheld body, the digital display voltmeter is three-digit digital display, connects the group battery, as long as turn on switch 1, can show battery voltage in real time, has shown battery power promptly. The digital display voltmeter can also be replaced by other electric quantity display devices, and the digital display voltmeter belongs to the protection scope of the patent.

Still be provided with status indicator lamp 11 on the handheld body, status indicator lamp 11 has 3 LED lamps to constitute, connects the main control board. Not only can show battery power, operating condition, can also indicate that battery voltage is low excessively, reminds the user in time to charge. And the dual display function of the electric quantity is realized.

The utility model integrates the strong light flashlight into the device, and the flashlight is not needed to be carried in the field detection, thereby the use is very convenient; the unique constant magnetic control is adopted, the output magnetic field is constant from full charge to exhaustion of the high-energy battery, and the density and the lifting force of the detection sensor are ensured; equipment miniaturization: through the innovation of a magnetization mode, the innovation improvement of an iron core material and a structure, the innovation of a control mode and the like, a micro cross magnetic yoke, a control circuit, a high-energy battery, black/white light illumination, a flashlight and the like are integrated into a whole; the weight of the whole machine is reduced to more than two kilograms, and the whole machine is small and exquisite, so that the labor intensity is reduced, and the detection working efficiency is greatly improved. And (3) dual electric quantity display: firstly, voltage is displayed in a digital display mode, and secondly, the LED indicator light is used for displaying, so that the electric quantity is monitored in real time; the intelligent charging management module manages the charging of the high-energy battery, and is safe and reliable; the cross magnetic yoke probe is integrally encapsulated, so that the waterproof performance and the safety performance of equipment are greatly enhanced; the human engineering design, the hand feeling is comfortable, the weight is light, and the use is safe.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and changes may be made without inventive changes in the technical solutions of the present invention.

Claims

1. The utility model provides a from rotating magnetic field flaw detector of taking flashlight, includes crossing yoke probe (9) and sets up the handheld body on crossing yoke probe (9) upper portion, its characterized in that: the handheld body comprises a handheld handle (4), a middle cross beam (8) and a battery assembly (7), and the handheld body and the crossed magnetic yoke probe (9) are connected into a whole through the middle cross beam (8); still set up flashlight lighting component in the handheld body, one side of handheld body is provided with illumination head (2).

2. The rotating magnetic field flaw detector with a flashlight of claim 1, wherein: the flashlight lighting assembly comprises an LED lamp wick, a lamp wick radiator, a flashlight key switch (3) and a flashlight power panel, wherein the LED lamp wick, the lamp wick radiator, the flashlight key switch and the flashlight power panel are installed in a lighting head (2), the battery assembly (7) is connected with the flashlight power panel through the flashlight key switch, and the flashlight power panel outputs an electric signal to drive the LED lamp wick to emit light.

3. The rotating magnetic field flaw detector with a flashlight of claim 1, wherein: the cross magnetic yoke probe (9) comprises an iron core, coils wound on four oblique magnetic arms of the iron core and movable pulleys (13) arranged on magnetic feet at the lower parts of the four oblique magnetic arms; the iron core is a double-pi-shaped iron core.

4. The rotating magnetic field flaw detector with a flashlight of claim 1, wherein: the middle cross beam (8) comprises an internal double-Pi-shaped iron core cross beam and a main control board, an LED illuminating lamp (12) is arranged on the lower portion of the middle cross beam (8), and the LED illuminating lamp (12) is connected with the battery component (7).

5. The rotating magnetic field flaw detector with a flashlight of claim 4, wherein: the main control board comprises an MCU and an H-bridge circuit composed of four MOS tubes, wherein the MCU controls the H-bridge circuit composed of the four MOS tubes through an MOS driver, outputs two groups of electric signals with a certain phase difference and is connected to two groups of coils of the crossed magnetic yoke probe.

6. The rotating magnetic field flaw detector with a flashlight of claim 1, wherein: the battery assembly (7) is a rechargeable battery and comprises a shell, and a battery management module and a lithium battery pack are arranged in the shell; be provided with charge indicator (5) and the jack that charges on the shell, battery management module is connected in charge indicator (5), and lithium cell group is connected to battery management module.

7. The rotating magnetic field flaw detector with a flashlight of claim 1, wherein: the handheld handle (4) comprises a shell and a main loop boosting and voltage stabilizing module inside the shell, the main loop boosting and voltage stabilizing module is connected with the battery assembly and the main control board, a voltage signal is input to the main loop boosting and voltage stabilizing module through the power switch, and an output signal of the main loop boosting and voltage stabilizing module is connected with an input end of the main control board; and a shell of the hand-held handle (4) is provided with a flashlight key switch (3) and a magnetizing key switch (10) for controlling the opening and closing of the flaw detector.

8. The rotating magnetic field flaw detector with a flashlight of claim 1, wherein: the handheld body is further provided with a digital display voltmeter (6), and the digital display voltmeter (6) is connected with the battery pack.

9. The rotating magnetic field flaw detector with a flashlight of claim 1, wherein: the handheld body is also provided with a status indicator lamp and a power switch (1), and the status indicator lamp is connected with the main control panel; and the power switch is connected with the battery assembly (7) and the main loop boosting and voltage stabilizing module.