CN111458402A

CN111458402A - Induction current device

Info

Publication number: CN111458402A
Application number: CN202010245226.3A
Authority: CN
Inventors: 张翼东; 高亚玮; 王婵; 周文博; 王丹; 李震龙; 刘翡; 冯颖
Original assignee: AECC Aviation Power Co Ltd
Current assignee: AECC Aviation Power Co Ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-07-28
Anticipated expiration: 2040-03-31
Also published as: CN111458402B

Abstract

The invention discloses an induction current device, which comprises a fixed disc, a coil and an inductance iron core; the fixed disk is made of nonmetal, is a disk, and is embedded on the peripheral surface of the fixed disk; the center of the circle of the fixed disc is provided with a jack, the cross sections of the jack and the inductance iron core are rectangular, the cross section size of the jack is the same as that of the inductance iron core, and the front end of the inductance iron core is inserted into the jack. The induction magnetic field of the part contacted with the inductance iron core is more balanced, the discontinuous display is easier to identify, the defect detection efficiency is higher, and the detection efficiency is improved.

Description

Induction current device

Technical Field

The invention belongs to the field of magnetic powder detection, and relates to an induction current device.

Background

At present, the lower end of a fixing device adopted by the open circuit type induction current method needs to be in contact with a base body of a flaw detector to be fixed, so that the capacity of fixing an inductance core can only be aimed at specific equipment with coils extremely close to the base body, and the open circuit type induction current method is not suitable for other equipment. And the accessory is more, and it is comparatively complicated to install, and its main part itself also not constitute by an organic whole, but by a plurality of positions concatenation, leads to its stability relatively poor. At the section where the inductor is contacted with the part, the stability of the device is poor, and the inductor iron core is easy to incline, so that the induction magnetic field generated on the surface of the part is easy to be unbalanced. The imbalance of the magnetic field makes the display problem of the discontinuity difficult to be identified, so that more time is consumed by detection personnel to verify the discontinuous display in the detection process, and the detection efficiency is lowered.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides the induction current device which is convenient to mount and dismount and strong in stability, ensures the balance of an induction magnetic field generated on the surface of a part, and improves the detection efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:

an induction current device comprises a fixed disc, a coil and an inductance iron core;

the fixed disk is made of nonmetal, is a disk, and is embedded on the peripheral surface of the fixed disk; the center of the circle of the fixed disc is provided with a jack, the cross sections of the jack and the inductance iron core are rectangular, the cross section size of the jack is the same as that of the inductance iron core, and the front end of the inductance iron core is inserted into the jack.

Preferably, one end of the circumferential surface of the fixed disk extends in the radial direction to form an extension section.

Further, the diameter of the extension section of the fixed disc is smaller than the outer diameter of the coil.

Preferably, the fixed tray is made of a wood material.

Preferably, a plurality of round holes are arranged at the eccentric position on the end surface of the fixed disk.

Furthermore, the number of the circular holes is six, and the circle centers of all the adjacent circular holes are connected in a regular hexagon shape.

And furthermore, the center of the regular hexagon is the center of the fixed disk.

Preferably, the front end of the inductor core is smaller than the tail end.

Preferably, the difference between the diameter of the fixed disk and the inner diameter of the coil is less than 2 mm.

Preferably, the two end faces and the inner and outer circles of the coil are wrapped with insulating plates to form a circular ring.

Compared with the prior art, the invention has the following beneficial effects:

the fixing device for the coil and the inductance core is designed into one component, the stability degree of the fixing device is far higher than that of the fixing device formed by assembling, other accessories are not needed, the mounting is simple, the applicability is high, the fixing device cannot be mounted on the equipment due to the influence of the self structure of the equipment, the fixing device is suitable for the flaw detection equipment of the coil with the same size, the inductance core is inserted into the fixed disc, the stability is good, the inclination is not easy, the induction magnetic field of a part in contact with the inductance core is more balanced, the discontinuous display is easier to identify, the defect detection efficiency is higher, and the detection efficiency is improved.

Furthermore, an extension part is arranged at one end of the fixed disk, so that the fixed disk is more easily clamped on the coil and is not inclined.

Furthermore, the fixed disk is made of wood materials, so that the weight is light, the fixed disk is insulated and does not conduct magnetism, and the condition that the device is influenced by a magnetic field to generate induced current so as to interfere detection can be effectively avoided.

Furthermore, the fixed disc is provided with a round hole, so that the weight of the device is reduced, and the device is convenient to carry and mount.

Further, inductance core front end size is less to make the inductance core of inserting more stable, and prevent that inductance core from to the inside skew of fixed disk.

Drawings

FIG. 1 is an exploded view of the structure of the current inducing apparatus of the present invention;

FIG. 2 is a completed assembly diagram of the inductive current device of the present invention;

fig. 3 is a diagram illustrating a state of the induction current device according to the present invention.

Wherein: 1-fixing the disc; 2-a coil; 3-an extension section; 4-an inductor core; 5-jack.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

as shown in fig. 1 and 2, the inductive current device of the present invention includes a fixed plate 1, a coil 2, and an inductor core 4.

The fixed disk 1 is made of nonmetal, and the fixed disk 1 is preferably made of wood, so that the wood is insulated, and an interference magnetic field cannot be generated; the fixed disk 1 is a circular disk, one end of the peripheral surface of the fixed disk 1 extends along the radial direction, the preferred extending length of the fixed disk 1 is less than the thickness of the coil 2, and the length of the fixed disk 1 is less than the length of the coil 2, so that the fixed disk 1 can be clamped on the coil 2 more easily and cannot fall over. The fixed disc 1 has a diameter of 469mm and a length of 100mm, and the extension section 3 has a diameter of 500mm and a length of 20 mm.

The eccentric position on the end face of the fixed disk 1 is provided with a plurality of round holes, so that the weight of the device is reduced, the device is convenient to carry and install, the diameter of each round hole is 80mm, the number of the round holes is six, the circle centers of all adjacent round holes are connected into a regular hexagon, the center of each regular hexagon is the circle center of the fixed disk 1, so that the adjacent round holes are ensured to be equidistant, and the distance between the circle centers of the round holes and the circle center of the fixed disk 1 is.

The centre of a circle of fixed disk 1 is provided with jack 5, and jack 5 and inductance core 4 cross-section are the rectangle, and 5 cross-sectional dimensions of jack are the same with 4 cross-sectional dimensions of inductance core, and inductance core 4 part inserts to jack 5 in, and the length of this embodiment jack 5 is 36mm, and is high 32 mm.

The inductance iron core 4 is a cuboid iron rod, the inductance iron core 4 is divided into two sections, one section extends into the jack 5, the other section is positioned outside the fixed disc 1, the size of the front end of the inductance iron core 4 is smaller than that of the tail end, the difference between the size of the jack 5 and the size of the front end of the inductance iron core 4 is smaller than 2mm, the length of the front end of the inductance iron core 4 is 100mm, the width is 35mm, and the height is 31 mm; the length of the tail end of the inductance iron core 4 is 302mm, the width is 67mm, and the height is 51 mm.

Insulating plates are wrapped on two end faces and the inner circle and the outer circle of the coil 2, the coil 2 forms an insulating circular ring, the difference between the diameter of the fixed disk 1 and the inner diameter of the coil 2 is smaller than 2mm, the coil 2 is embedded on the circumferential surface of the fixed disk 1, the inner diameter of the coil 2 is 470mm, the outer diameter of the coil 2 is 540mm, and the length of the coil 2 is 102 mm.

When in use, as shown in fig. 3, the fixed disk 1 is arranged in the coil 2, so that the extension section 3 of the fixed disk 1 is clamped on the end surface of the coil 2; the front end of the inductance iron core 4 is inserted into the jack 5 of the fixed disc 1, and finally, the part is sleeved on the part, which is not inserted into the jack 5, of the inductance iron core 4, so that stable support can be completed.

The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.

Claims

1. An induction current device is characterized by comprising a fixed disc (1), a coil (2) and an inductance iron core (4);

the fixed disk (1) is made of nonmetal, the fixed disk (1) is a disk, and the coil (2) is embedded on the circumferential surface of the fixed disk (1); the circle center of the fixed disc (1) is provided with an insertion hole (5), the sections of the insertion hole (5) and the inductance iron core (4) are rectangular, the section size of the insertion hole (5) is the same as that of the inductance iron core (4), and the front end of the inductance iron core (4) is inserted into the insertion hole (5).

2. An induction current device according to claim 1, characterised in that one end of the circumferential surface of the stator (1) extends in a radial direction to form an extension (3).

3. Inductive-current device according to claim 2, characterized in that the diameter of the extension (3) of the holding plate (1) is smaller than the outer diameter of the coil (2).

4. Inductive current device according to claim 1, characterized in that the holding plate (1) is made of a wooden material.

5. An induction current device according to claim 1, characterised in that the eccentric position on the end surface of the stationary disc (1) is provided with a number of circular holes.

6. An inductive current device according to claim 5, wherein the number of circular apertures is six and the overall line of centres of adjacent circular apertures is regular hexagonal.

7. An induction current device according to claim 6, characterised in that the centre of the regular hexagon is the centre of the fixed disk (1).

8. Inductive current device according to claim 1, characterized in that the inductor core (4) has a smaller front dimension than its end dimension.

9. An inductive current device according to claim 1, characterized in that the difference between the diameter of the stationary disc (1) and the inner diameter of the coil (2) is less than 2 mm.

10. An inductive current device according to claim 1, wherein the ends and inner and outer circumferences of the coil (2) are surrounded by insulating plates to form a ring.