CN111458402B

CN111458402B - Induced current device

Info

Publication number: CN111458402B
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: 2023-08-29
Anticipated expiration: 2040-03-31
Also published as: CN111458402A

Abstract

The invention discloses an induced current device, which comprises a fixed disc, a coil and an inductance core; the fixed disk is made of nonmetal, the fixed disk is a disk, and the coil is nested on the peripheral surface of the fixed disk; the centre of a circle of fixed disk is provided with the jack, and jack and inductance core cross-section are the rectangle, and jack cross-section size is the same with inductance core cross-section size, and inductance core front end inserts in the jack. The induction magnetic field of the part contacted 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.

Description

Induced current device

Technical Field

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

Background

At present, the lower end of a fixing device adopted by the open-circuit induction current method needs to be in contact with a base body of a flaw detector for fixing, so that the method is only applicable to specific equipment with a coil very close to the base body in the capability of fixing an inductive iron core, and is not applicable to other equipment. The accessory is more, the installation is more complicated, and the main body of the accessory is not integrally formed, but is formed by splicing a plurality of parts, so that the stability of the accessory is poor. In the section that inductance and part contacted, because the stability of device is relatively poor, inductance core easily inclines, causes the unbalanced induction magnetic field that the part surface produced very easily. The imbalance of the magnetic field makes the display problem of discontinuity become difficult to identify, so that the detection personnel can spend more time 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 induced current device which is convenient to install and disassemble, high in stability, capable of guaranteeing the equilibrium of an induced magnetic field generated on the surface of a part and improving the detection efficiency.

In order to achieve the purpose, the invention is realized by adopting the following technical scheme:

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

the fixed disk is made of nonmetal, the fixed disk is a disk, and the coil is nested on the peripheral surface of the fixed disk; the centre of a circle of fixed disk is provided with the jack, and jack and inductance core cross-section are the rectangle, and jack cross-section size is the same with inductance core cross-section size, and inductance core front end inserts in the jack.

Preferably, one end of the peripheral 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 disk is smaller than the outer diameter of the coil.

Preferably, the fixing plate is made of wood material.

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

Further, the number of the round holes is six, and all connecting lines of the circle centers of the adjacent round holes are regular hexagons.

Still further, the center of the regular hexagon is the center of the circle of the fixed disc.

Preferably, the inductor core has a front end dimension smaller than a rear end dimension.

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

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

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

the invention designs the fixing device of the coil and the inductance core into a 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 installation is simple, the applicability is high, the device can not be installed on the device due to the influence of the structure of the device, the device is suitable for flaw detection equipment of the coil with the same size, the inductance core is inserted into a fixing disc, the stability is good, the inductance core is not easy to incline, the induction magnetic field of a part contacted with the inductance core can be more balanced, the discontinuous display is easier to identify, the defect detection efficiency is higher, and the detection efficiency is improved.

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

Further, the fixed disk is made of wood materials, is light in weight, is insulated and does not conduct magnetism, and can effectively avoid the situation that the device itself is influenced by a magnetic field to generate induced current so as to interfere detection.

Further, the fixing plate is provided with a round hole, so that the weight of the device is reduced, and the device is convenient to carry and install.

Further, the inductor core front end size is smaller, so that the inserted inductor core is more stable, and the inductor core is prevented from shifting toward the inside of the fixed disc.

Drawings

FIG. 1 is an exploded view of an induction current device of the present invention;

FIG. 2 is an assembled view of the induction current device of the present invention;

fig. 3 is a diagram illustrating the use of the current sensing device according to the present invention.

Wherein: 1-a fixed disk; a 2-coil; 3-extension segments; 4-an inductance core; 5-jack.

Detailed Description

The invention is described in further detail below with reference to the attached drawing figures:

as shown in fig. 1 and 2, the induction current device according to the present invention includes a fixed disk 1, a coil 2, and an inductor core 4.

The fixed disk 1 is made of nonmetal, and the preferred fixed disk 1 of the embodiment is made of wood material, is insulated by wood, and does not generate an interference magnetic field; the fixing disc 1 is a disc, one end of the circumferential surface of the fixing disc 1 extends along the radial direction, the preferred extension length of the embodiment is smaller than the thickness of the coil 2, and the length of the fixing disc 1 is smaller than the length of the coil 2, so that the fixing disc 1 is easier to clamp on the coil 2 and is not inclined. The diameter of the fixed disc 1 is 469mm, the length is 100mm, the diameter of the extension section 3 is 500mm, and the length is 20mm.

The eccentric position on the terminal surface of fixed disk 1 is provided with a plurality of round hole to lighten the weight of device and be convenient for transport and installation, the round hole diameter is 80mm, and the round hole quantity is six, and the whole line shape in centre of a circle of adjacent round hole is regular hexagon, and regular hexagon's center is the centre of a circle of fixed disk 1, with guarantee the equidistance between the adjacent round hole, the centre of a circle of round hole is 120mm apart from fixed disk 1 centre of a circle.

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 jack 5 cross-section size is the same with inductance core 4 cross-section size, and inductance core 4 part inserts in jack 5, and the jack 5 length of this embodiment is 36mm, highly is 32mm.

The inductor core 4 is a cuboid iron rod, the inductor 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 front end size of the inductor core 4 is smaller than the tail end size, the difference between the jack 5 size and the front end size of the inductor core 4 is smaller than 2mm, the front end length of the inductor core 4 is 100mm, the width is 35mm, and the height is 31mm; the length of the tail end of the inductance core 4 is 302mm, the width is 67mm, and the height is 51mm.

The two end faces and the inner and outer circles of the coil 2 are wrapped with insulating plates, the coil 2 forms an insulating circular ring, the difference between the diameter of the fixed disc 1 and the inner diameter of the coil 2 is smaller than 2mm, the coil 2 is nested on the peripheral surface of the fixed disc 1, the inner diameter of the coil 2 is 470mm, the outer diameter is 540mm, and the length of the coil 2 is 102mm.

In use, as shown in fig. 3, the fixing disc 1 is installed in the coil 2, so that the extension section 3 of the fixing disc 1 is clamped on the end face of the coil 2; the front end of the inductance core 4 is inserted into the jack 5 of the fixed disc 1, and finally, parts are sleeved on the part of the inductance core 4 which is not inserted into the jack 5, so that stable support can be completed.

The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to 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 core (4);

the fixed disc (1) is made of nonmetal, the fixed disc (1) is a disc, and the coil (2) is nested on the peripheral surface of the fixed disc (1); the center of the fixed disc (1) is provided with a jack (5), the sections of the jack (5) and the inductance core (4) are rectangular, the section size of the jack (5) is the same as that of the inductance core (4), and the front end of the inductance core (4) is inserted into the jack (5);

the fixed disc (1) is made of wood materials;

the difference between the diameter of the fixed disc (1) and the inner diameter of the coil (2) is smaller than 2mm;

insulating plates are wrapped on the two end faces and the inner circle and the outer circle of the coil (2) to form a circular ring.

2. An induction current device according to claim 1, characterized in that one end of the circumferential surface of the stationary disc (1) extends radially forming an extension (3).

3. An induction current device according to claim 2, characterized in that the diameter of the extension (3) of the stationary disc (1) is smaller than the outer diameter of the coil (2).

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

5. The inductive current device of claim 4, wherein the number of circular holes is six, and all connecting lines of the centers of adjacent circular holes are regular hexagons.

6. The induced current device according to claim 5, wherein the center of the regular hexagon is the center of the fixed disk (1).

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