KR101618158B1

KR101618158B1 - Multi-channel ultrasonic Probe-block device

Info

Publication number: KR101618158B1
Application number: KR1020150122237A
Authority: KR
Inventors: 모용선; 이성찬; 권효동; 장국진; 김종현; 진범수
Original assignee: 엔디티엔지니어링(주)
Priority date: 2015-08-29
Filing date: 2015-08-29
Publication date: 2016-05-04

Abstract

The present invention relates to a multi-channel ultrasonic probe-block device, which can improve efficiency of inspection working time, and can be applied to special defect inspection. To achieve this, according to the present invention, provided is a multi-channel ultrasonic probe-block device which comprises a plurality of probes, a nipple unit, and a block unit. The block unit is configured to have a cone unit which is hollow conical shaped and is vertically provided in the inside of the block unit.

Description

[0001] The present invention relates to a multi-channel ultrasonic probe,

The present invention relates to a multi-channel ultrasonic probe, and a multi-channel ultrasonic probe having a plurality of probes is mounted on a rotating pipe to measure the thickness and thickness of the pipe inner / Channel ultrasonic probe.

In general, the types of defects that occur during the pipe manufacturing process include defects in the longitudinal direction of the pipe and defects in the transverse direction and inside and outside surfaces. In the non-destructive inspection using ultrasonic waves, the defects are examined in both directions to determine the integrity of the pipe In order to perform all of these, it is necessary to perform the inspection by changing the position and angle of the probe, so that the inspection time is excessively required, which causes many problems.

In addition, the automatic ultrasonic inspection apparatus performs an automatic ultrasonic inspection to check the integrity of various industrial facilities. An ultrasonic probe holder, which is an apparatus for fixing an ultrasonic probe, which is a part of the automatic ultrasonic inspection apparatus, uses an inflection wedge to cause an ultrasonic wave generated from an ultrasonic probe to be incident on a test body at a predetermined angle.

In order for the ultrasonic waves passing through the refracting wedge to be transmitted well between the test body and the ultrasonic probe, the refracting wedge should be closely adhered to the surface of the test piece.

For this purpose, in the ultrasonic probe holder according to the prior art, a tensile or compression spring structure that pulls or pushes in the direction perpendicular to the surface of the test object is used so that the refracting wedge is in close contact with the bending and inclination of the test object.

In order to adjust the angle of incidence, a plastic material such as acrylic is used. In this method, a female thread fixing an ultrasonic probe is fixed to the refraction wedge, and an ultrasonic probe It is fixed to the refraction wedge.

As a result, in the case of multiple detachment, the fastening screw is worn and the ultrasonic probe is not firmly fixed to the refractive wedge. In addition, since the conventional ultrasonic probe holder has a structure in which a refracting wedge is closely attached to the surface of a test piece by using a tensile or compression spring, when an automatic test is performed in a curved test piece such as a pressure vessel, When the transducer moves automatically to the front, back, and right and left, the distance between the fixture of the probe and the surface of the specimen is not constant, so that the deflection of the spring is different. There is a limitation in the distance of travel for close contact so that the inspection area to be inspected at one time is limited.

A conventional ultrasonic probe holder has a structure in which a refracting wedge moves in contact with a test body even when the test is not performed, thereby causing the refracting wedge to quickly wear out. Further, in the conventional ultrasonic probe holder, when a refracting wedge surface is conveyed on the surface of a test object having a severe jaw or concavo-convexity only by the rotating shaft holding the hinge unit, the refracting wedge rotates, There is a problem that the ultrasonic signal transmission is disconnected.

According to the related art, it is described in Korean Patent No. 10-1069459, however, it is necessary to know the accurate refraction angle of the probe, and the position and the depth of the detected defect are completely different from each other, It does not become.

Korean Patent No. 10-1069459

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a probe fixture which can secure a plurality of probes, And to provide a multi-channel ultrasonic probe capable of stably detecting defects.

According to an aspect of the present invention, there is provided a multi-channel ultrasonic probe apparatus including: a plurality of probes; a nipple portion that is spaced apart from the plurality of probes and into which a medium flows; And a plurality of insertion holes into which the plurality of probes are inserted to fix the plurality of probes to each other and fix the plurality of probes, wherein the block portion is provided in the up and down direction inside the block portion and includes a hollow conical conical portion .

Wherein the block portion includes an upper block portion formed below the nipple portion, a lower block portion formed below the upper block portion and coupled with the upper block portion, A first supporting part connected to the ascending and descending part and attached to one side of the block part and fixedly supporting the block part, the first supporting part connected to the ascending and descending part and including a roller part formed parallel to the lower part of the lower block part, And a second support portion connected to the ascending and descending portion and attached to the other side of the block portion and fixedly supporting the block portion.

According to the solution of the above-mentioned problems, the multi-channel ultrasonic probe of the present invention has the following effects.

First, it is possible to measure the depth and thickness of the inspecting object in the longitudinal direction or the transverse direction of the inspecting object such as the pipe.

Second, it can be applied by changing the installation position and angle of the ultrasonic probe according to the outer diameter of the inspection object and the inspection type, so that it is also possible to apply special defect inspection such as oblique defect.

Third, it is possible to improve the reliability of inspection results and to facilitate the detection and evaluation of defects, by making it possible to stably inspect by the degree of freedom, to maintain the constant tangent angle and to maintain the medium stably.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a conventional multi-channel ultrasonic probe according to the present invention. FIG.
Fig. 2 is an overall configuration view of a multi-channel ultrasonic probe according to the present invention; Fig.
3 is a configuration diagram of a multi-channel ultrasonic probe according to the present invention;
FIG. 4 is a block diagram of a lower block of a multi-channel ultrasonic probe according to the present invention. FIG.
5 is a cross-sectional view of a multi-channel ultrasonic probe according to the present invention.
6 is a view showing the degree of freedom of a multi-channel ultrasonic probe according to the present invention.

The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings.

On the other hand, when an element is referred to as being "comprising" another element in the description of the invention or in the claims, it is not interpreted as being limited to only that element, Elements may be further included.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1, 2, 3, 4, 5 and 6, the structure of the present invention can be confirmed. FIG. 1 is a block diagram of a conventional multi-channel ultrasonic probe according to the present invention. FIG. 2 is a block diagram of a multi-channel ultrasonic probe according to the present invention. FIG. 5 is a cross-sectional view of a multi-channel ultrasonic probe according to the present invention, and FIG. 6 is a cross-sectional view of a multi-channel ultrasonic probe according to the present invention. FIG.

Specifically, as shown in Fig. 1 (a), a perspective inspection is performed to check longitudinal defects of the pipe T using the probe P, and Fig. 1 (b) P is used to perform a square inspection to inspect the transverse defects of the pipe T, and (c) It is a figure performing a test.

A multi-channel ultrasonic probe according to the present invention includes a plurality of probes (100), a plurality of nipples (200) spaced apart from the plurality of probes (100) and introducing a medium therein, And a block unit 300 formed with an insertion hole into which the probe 100 is inserted and fixing the plurality of probes 100. The block unit 300 includes upper and lower And a conical portion 310 having a hollow conical shape.

The block unit 300 includes an upper block unit 320 formed below the nipple unit 200 and a lower block unit 320 coupled to the upper block unit 320 below the upper block unit 320, A fixing part 340 for fixing and dismounting the upper block part 320 and the lower block part 330 and a roller part 350 formed parallel to the lower part of the lower block part 330, A first support part 500 connected to the ascending and descending part 400 and attached to one side of the block part 300 to fix and support the block part 300, And a second support part 600 connected to the ascending and descending part 400 and attached to the other side of the block part 300 to fix and support the block part 300.

First, in the multi-channel ultrasonic probe according to the present invention, a plurality of probes 100 are provided.

3, the plurality of transducers 100 includes a first transducer 110 disposed at the center of the upper block 320 and a second transducer 120 disposed in the north, south, east, A third transducer 130, a fourth transducer 140, and a fifth transducer 150 are formed.

The plurality of transducers (100) can be configured by being integrated with an ultrasonic probe cable.

3, the first transducer 110 is inserted into the block 300 at a right angle, and the second transducer 120, the third transducer 130, the fourth transducer 140, , And the fifth probe 150 is inserted into the block portion 300 at an angle.

The tilt angle (I) of the plurality of transducers 100 is calculated by the following equation (1).

here,

I = inclination angle of the probe

R = angle of deflection in pipe

C1 = sound velocity of the medium

C2 = transverse sound velocity in pipe

The plurality of probes (100)

Is inclined so as to satisfy the following expression.

For example, when the medium to be used is water and the material of the pipe is iron, sin (I) / sin (45) = 1480 m / s / 3250 m / s.

Therefore, since the inclination angle I of the probe is approximately 19 degrees, if the insertion holes into which the plurality of transducers 100 are inserted are machined to be inclined at 19 degrees, it is possible to constitute a plurality of transducers 100 having a 45 degree angle of deflection have.

The inclination angle (I) of the transducer refers to the inclination angle of the plurality of transducers (100).

The transducer protecting portion 160 is provided in the insertion hole into which the plurality of transducers 100 are inserted.

The probe protecting portion 160 is formed in a cylindrical shape.

Specifically, when the upper block portion 320 and the lower block portion 330 are continuously exposed to water, the volume of the upper block portion 320 and the lower block portion 330 may be expanded Thereby preventing the pressure of the plurality of probes 100 from being applied.

The transducer protecting portion 160 may be formed of SUS material.

The nipple unit 200 is provided apart from the plurality of probes 100.

The nipple unit 200 serves to introduce the medium.

An insertion hole is formed below the plurality of transducers 100 to insert the plurality of transducers 100, and a block unit 300 for fitting and fixing the plurality of transducers 100 is provided.

The block unit 300 is formed by inserting holes into which the plurality of probes 100 are inserted and fitting the plurality of probes 100 into the block unit 300 and fixing the plurality of probes 100.

In addition, the plurality of transducers 100 maintain the initial set angle and direction even with external vibrations that may occur during the inspection.

A hollow cone-shaped cone 310 is provided inside the block unit 300 in the upward and downward directions.

The cone 310 serves to keep the supplied ultrasonic medium filled in the nipple unit 200 when the medium flows in the nipple unit 200.

Specifically, the angle of the cone of the cone 310 is set such that the ultrasonic waves transmitted to the plurality of probes 100 during the ultrasonic inspection are not reflected from the inner surfaces of the upper block 320 and the lower block 330 .

The block unit 300 is provided with an upper block unit 320 below the nipple unit 200.

The upper block 320 serves to receive the medium supplied from the nipple unit 200.

Further, a lower block part 330 coupled to the upper block part 320 is provided below the upper block part 320.

The lower block 330 serves to stably maintain the medium supplied from the upper block 320 and to scan ultrasonic waves transmitted from the plurality of transducers 100 into the pipe.

The fixing part 340 is provided to fix the upper block part 320 and the lower block part 330 and to detach the upper block part 320 and the lower block part 330.

The upper block 320 and the lower block 330 can be easily attached and detached and the upper block 320 and the lower block 330 can be detached without being separated from each other, .

Further, a roller portion 350 formed parallel to the lower portion of the lower block portion 330 is provided.

The roller unit 350 is stably mounted on the pipe for inspection.

The roller unit 350 is configured to solve a wear problem that may occur when the pipe is rotated after the multi-channel ultrasonic probe is seated on the pipe during ultrasonic inspection of the pipe, It is configured in a cylindrical shape for inspection, but can be configured in any other form.

Then, a lifting and lowering portion 400 that moves in the vertical direction is provided.

The ascending and descending portion 400 may be constituted by an air cylinder or a motor.

More specifically, when the motor is driven by a motor, a separate elastic member is added and then the upper and lower degrees of freedom are provided, so that the multi-channel ultrasonic probe is completely adhered to the multi-channel ultrasonic probe even when the pipe is eccentric during the ultrasonic inspection.

The upper block portion 320 and the lower block portion 330 have a left-right and front-rear degree of freedom, and are connected to the ascending / descending portion 400, 320 and the lower block 330 are closely attached to the pipe to be inspected.

The upper block portion 320 and the lower block portion 330 are connected to the ascending and descending portion 400 and are attached to one side of the upper block portion 320 and the lower block portion 330, 1 supporting part 500 is provided.

The second support portion 320 is connected to the ascending and descending portion 400 and is attached to the other side of the upper block portion 320 and the lower block portion 330 and fixedly supports the upper block portion 320 and the lower block portion 330. [ (600).

Specifically, as shown in FIG. 6, the first support part 500 and the second support part 600 play a role of tilting left and right and tilting back and forth perpendicular to the left and right tilting.

Hereinafter, the operation of the multi-channel ultrasonic probe according to the present invention will be described in detail.

1, in order to inspect the longitudinal defects and the transverse defects, as shown in FIG. 1, ultrasonic waves are applied to the transducer P in one direction as shown in FIGS. 1 (a) and 1 (b) It is judged whether or not there is a defect with the signal reflected from the defect, and the probe is placed in the opposite direction again to proceed the inspection.

Therefore, in order to inspect the defect of the pipe (T), the inspection time is excessively required by proceeding twice for the longitudinal defect inspection, twice for the lateral defect inspection, and once for the thickness measurement, Resulting in many losses.

The multi-channel ultrasonic probe is lowered to be placed on the inspection pipe, the inspection is performed with the plurality of probes 100, and when the inspection is completed, the pipe is moved up to the next process.

As described above, the multi-channel ultrasonic probe according to the present invention is capable of measuring defects and thicknesses in the longitudinal direction or the transverse direction of an object to be inspected such as a pipe, And can be applied by changing the installation position and angle of the ultrasonic probe according to the outer diameter and inspection type of the object to be inspected. Therefore, it is possible to apply special defect inspection such as oblique defect, stable inspection by the degree of freedom, Angle, and medium can be stably maintained, it is possible not only to improve the reliability of inspection results, but also to facilitate the detection and evaluation of defects.

As described above, it is to be understood that the technical structure of the present invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

It is therefore to be understood that the invention is not limited by any of the details set forth herein, and the scope of the invention is indicated by the appended claims rather than the foregoing description, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the appended claims. It is to be understood that the invention is not limited to the disclosed embodiments.

100: Multiple transducers
110: 1st probe
120: 2nd probe
130: Third probe
140: The fourth probe
150: The fifth probe
160: Probe protection unit
200: Nipple portion
300:
310:
320: upper block portion
330: Lower block part
340:
350: roller portion
400:
500: first supporting part
600: second support portion

Claims

Multiple transducers;
A nipple part formed apart from the plurality of probes and introducing the medium;
An upper block part for fixing the nipple part, wherein the insertion hole is inserted in the lower part of the plurality of transducers by fitting the plurality of probes into the probe block;
A U-shaped lower block portion formed below the upper block portion and coupled with the upper block portion;
A fixing part for fixing and detachably attaching the upper block part and the lower block part;
A transducer protector provided on an inner surface of the insertion hole into which the plurality of transducers are inserted;
A roller portion formed parallel to the lower portion of the lower block portion;
And a conical portion provided in the lower block portion in the up and down direction and having a hollow conical shape,
The plurality of probes may include:
A first probe inserted into a center portion of the upper block portion;
And a second transducer to a fifth transducer inserted in the directions of north, south, south, and south with respect to the first transducer,
The plurality of probes are inclined at an inclination angle (I) with the first probe so as to be coupled to the upper block portion with an inclination angle (I) calculated by Equation (1) Features multi-channel ultrasonic probe.
[Equation 1]

here,
I = inclination angle of the probe
R = angle of deflection in pipe
C1 = sound velocity of the medium
C2 = transverse sound velocity in pipe

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The method according to claim 1,
A lifting and lowering portion moving in a vertical direction;
A first support portion connected to the ascending and descending portion and attached to one side of the upper block portion and the lower block portion and fixedly supporting the upper block portion and the lower block portion;
And a second support portion connected to the ascending and descending portion and attached to the other side of the upper block portion and the lower block portion and fixedly supporting the upper block portion and the lower block portion,
The first support portion and the second support portion may be formed of,
Wherein the tilting of the left and right tilting and the tilting of the right and left tilting are possible.

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