KR20160001537U

KR20160001537U - Apparatus for crack detection

Info

Publication number: KR20160001537U
Application number: KR2020140007989U
Authority: KR
Inventors: 최창기
Original assignee: 주식회사 현대미포조선
Priority date: 2014-11-03
Filing date: 2014-11-03
Publication date: 2016-05-11

Abstract

A crack detection device according to the present invention includes: a cylindrical sealing jig that is installed so that a part or whole thereof is inserted into an end portion of the pipe, and includes a rubber tube whose circumference is variable; A spraying unit installed in front of the sealing jig for spraying water into the pipe; A connection pipe installed at the rear of the sealing jig and installed to communicate with the jetting part; A water supply unit for supplying water to the connection pipe; And a support portion extending at a rear end of the connection pipe in a direction perpendicular to the spraying direction of the water and having a rear surface contacting the support object. According to such a crack detecting apparatus according to the present invention, the outer periphery of the rubber tube can be varied as needed, and the end portion of the pipe can be sealed more firmly. Further, by providing the receiving portion in opposition to the force of spraying the water, it is possible to prevent the sealing jig from being pushed.

Description

[0001] Apparatus for crack detection [

The present invention relates to a crack detecting apparatus, and more particularly, to a crack detecting apparatus for detecting a position of a crack generated in a pipe by using a hydraulic pressure.

Generally, pipelines of various materials and specifications are constructed to transport fluids such as gas, oil and water to vessels.

Such pipelines may cause defects during installation and welding, and such defects may lead to various safety accidents due to leakage.

In order to prevent this, visual inspection, nondestructive inspection, and leakage test are performed before and after construction of the pipeline to detect the presence or absence of defects and the location of defects.

In particular, it is effective to use a hydrostatic test, which is a type of leakage test, because pipelines installed on a ship often perform inspection after completion of construction.

The hydrostatic test is an inspection method in which water is introduced into the inside of a pipeline to grasp the discontinuity (crack) of the pipeline by grasping the position where the water leaks, There is a good advantage of sensitivity compared to.

As a technology related to the above-described hydrostatic test apparatus, Korean Utility Model Application Publication No. 20-2011-0001103 is disclosed.

Here, the jig itself is easily inserted into the inside of the end portion of the heating pipe and the hex nuts coupled to the tubular shaft are rotated using a spanner, so that the jig is simply and perfectly fixed to the heating coil pipe, And then the water pressure pump is operated to check the leakage water.

However, a conventional jig for a hydraulic coil for a heating coil pipe does not have a support against a force for spraying water, so that the inserted jig may be pushed by the water pressure.

It is an object of the present invention to provide a crack detecting apparatus which can provide a high-sensitivity inspection and can stably operate at a high water pressure even without watering.

In order to accomplish the above object, a crack detecting apparatus of the present invention includes: a cylindrical sealing jig, which is installed so that a part or whole thereof is inserted into an end portion of the pipe, and includes a rubber tube whose circumference is variable; A spraying unit installed in front of the sealing jig for spraying water into the pipe; A connection pipe installed at the rear of the sealing jig and installed to communicate with the jetting part; A water supply unit for supplying water to the connection pipe; And a support portion extending at a rear end of the connection pipe in a direction perpendicular to the spraying direction of the water and having a rear surface contacting the support object.

Here, the sealing jig may include a rearward movement portion provided behind the rubber tube and moving back and forth.

Further, it is preferable that a thread is formed on the outer periphery of one end of the connection pipe.

Further, the crack detecting apparatus may further include a tightening nut moving along the thread.

Preferably, the water supply unit includes a check valve.

It is preferable that the connection pipe is a T-type pipe.

In the crack detecting apparatus according to the present invention, the outer periphery of the rubber tube can be varied as needed, and the end portion of the pipe can be sealed more firmly. Further, by providing the receiving portion in opposition to the force of spraying the water, it is possible to prevent the sealing jig from being pushed.

1 is a perspective view of a crack detecting apparatus according to an embodiment of the present invention,
FIG. 2 is a view showing the state of use when the crack detecting apparatus shown in FIG. 1 is installed on a pipe and a support object,
3 is an operational state diagram showing the operating state of the crack detecting apparatus shown in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings, and the inventor may appropriately design the concept of the term appropriately to describe its own design in the best way possible. It must be interpreted in terms of meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, at the time of the present application, It should be understood that variations can be made.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a crack detecting apparatus 10 according to an embodiment of the present invention, FIG. 2 is a use state view showing a case where the crack detecting apparatus 10 shown in FIG. 1 is installed on a pipe P, 3 is an operating state view showing the operating state of the crack detecting apparatus 10 shown in Fig.

1 to 3, the crack detecting apparatus 10 according to an embodiment of the present invention is a device for detecting the position of a crack generated in a pipe by using a water pressure. The crack detecting apparatus 10 includes a sealing jig 100, a spraying unit 200, a connecting pipe 300, a water supplying unit 400, a receiving unit 500, and a tightening nut 600.

The sealing jig 100 is partially or wholly inserted into the end portion of the pipe P and includes a rubber tube 110 and a rearward movement portion 120.

The circumference of the outer circumferential surface of the rubber tube 110 also varies as the length of the rubber tube 110 varies, thereby sealing the end of the pipe P. 2, when the sealing jig 100 is inserted into the pipe P, the diameter of the rubber tube 110 is kept to be less than the diameter of the pipe P, 100 can be introduced into the end of the pipe P without any hitching. 3, while the sealing jig 100 closes the end of the pipe P, the length of the rubber tube 110 is reduced and the diameter thereof is increased, P of the first embodiment.

The rearward movement part 120 is installed behind the rubber tube 110 and moves forward and backward to vary the transverse length of the rubber tube 110. At this time, it is preferable that the rearward movement part 120 is composed of a cylinder and reciprocates in a piston.

The injection unit 200 is installed in front of the sealing jig and is installed in the pipe 20. At this time, it is preferable that the jetting unit 200 communicate with the connection pipe 300 and the water supply unit 400, which will be described later, to receive and discharge water from the water supply unit 400.

The connection pipe 300 is provided behind the sealing jig 100 and serves to transmit water supplied from the water supply unit 400 to the spray unit 200.

One side of the water supply unit 400 is connected to the connection pipe 300 and the other side thereof is connected to a water supply tank (not shown) and a water supply pump (not shown) to connect the water supply tank 400 and the water supply pump The water supply unit 400 may further include a check valve 410 to prevent water from flowing back from the connection pipe 300 to the water supply unit 400. [

The support unit 500 is formed to extend in a direction perpendicular to the spraying direction of water at the rear end of the connection pipe 300. At this time, it is preferable that the receiving unit 500 is formed in a plate shape, and the rear surface of the receiving unit 500 is disposed to be in contact with the supporting object 20.

The tightening nut 600 is disposed behind the sealing jig 100 so that the rear moving part 100 moves forward and backward as the tightening nut 600 is tightened or loosened. At this time, it is preferable that the tightening nut 600 moves along a thread 310 formed on the outer periphery of the connection pipe 300. 3, when the end of the pipe P is sealed using the sealing jig 100, the user rotates the tightening nut 600 to move forward, so that the rear moving part 120 ). 2, when the sealing jig 100 is detached from the pipe P, it is preferable to rotate the tightening nut 600 to move it backward, thereby moving the rearward movement portion 120 backward .

In such a crack detecting apparatus 10, the outer periphery of the rubber tube 110 can be varied as needed, and the end portion of the pipe can be sealed more firmly. Further, by providing the catching portion 500 against the force of spraying water, the sealing jig 100 can be prevented from being pushed.

Although the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that various modifications and equivalents may be made thereto by those skilled in the art. Accordingly, the true scope of protection of the present invention should be determined by the technical idea of the appended claims.

10: crack detection device P: pipe
20: support object 100: sealing jig
110: rubber tube 120: rearward moving part
200: ejector 300: connector
400: water supply part 410: check valve
500: Support part 600: Fastening nut

Claims

An apparatus for detecting a crack in a pipe,
A cylindrical sealing jig provided so as to be partially or entirely inserted into the end portion of the pipe and including a rubber tube whose circumference is variable around;
A spraying unit installed in front of the sealing jig for spraying water into the pipe;
A connection pipe installed at the rear of the sealing jig and installed to communicate with the jetting part;
A water supply unit for supplying water to the connection pipe; And
And a support portion extending at a rear end of the connection pipe in a direction perpendicular to the spraying direction of the water and having a rear surface to be in contact with the support object.

The method according to claim 1,
Wherein the sealing jig includes a rearward movement portion provided behind the rubber tube and moving back and forth.

The method according to claim 1,
Wherein the connection pipe is formed with a thread on an outer periphery of one end thereof.

The method of claim 3,
And a tightening nut moving along the thread.

The method according to claim 1,
And the water supply portion includes a check valve.

The method according to claim 1,
Wherein the connecting pipe is a T-type pipe.