KR20200001884A - Digital radiography apparatus for pipes - Google Patents

Abstract

The present invention relates to a digital radiation photographing device for a pipe, capable of relatively increasing an image quality and coping with various sizes of a pipe welding part. The digital radiation photographing device for a pipe can comprise: a plurality of folding modules placed on the surface of a pipe and detecting a radiation irradiated toward the pipe; and a connection part which is rotatably coupled to a folding module on one side and detachably coupled to a connection pin of the folding module on the other side such that the folding module is arranged to be closely attached to a curved surface of the pipe.

Description

DIGITAL RADIOGRAPHY APPARATUS FOR PIPES}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital radiography apparatus for piping, which detects a defect of an inspection object having a curved portion, such as a ship's piping or a pipe welded portion, using radiation.

In shipyards, ships and offshore structures are being built by welding technology.

Welding technology in shipbuilding is the main technology of shipbuilding industry and is widely used throughout the shipbuilding process.

In shipbuilding, the welding technique is not only a technique of welding joint work, but also a structural arrangement in the design process depending on the welding technique, the deformation amount of the weld joint, the block unit, the working method, the inspection method, the welding posture and the conditions in the production Values may be the most important factor in improving productivity.

In particular, a welding object such as a pipe is a quality control object to identify a defect in the pipe after welding.

The defect detection methods of such welding objects include radiographic inspection, ultrasonic flaw inspection, penetration flaw inspection, magnetic powder flaw inspection, eddy current flaw inspection, visual inspection, and leakage flaw inspection.

In particular, the radiographic examination is based on a difference in concentration on the AR (Analog Radiography) film due to a change in the intensity of the transmitted radiation when the gamma rays or X-rays, which are transparent radiations, are irradiated to the test object. Defects can be detected.

That is, the radiation has a characteristic that can transmit most materials, and the amount of radiation is different depending on the thickness of the material.

As a result, when there is a discontinuity inside the weld, the degree of photosensitivity of the film is different due to the difference in the radiation dose.

Radiographic inspection in the field of ship technology according to the prior art detects defects in the welding by visually checking the difference in the degree of photosensitivity in the AR film, so that it takes a long time for radiation exposure and a disadvantage that requires a relatively large operating cost. Have

In the related art, the image plate called a cassette is used to store an image related to radiation transmission in an image plate, and then connected to a computer to check the image, and a digital detection signal according to the radiation transmission is detected through a radiation detection detector. Digital Radiography (DR) can be received in real time and imaged on a display device such as a computer.

According to the conventional radiographic inspection using the CR image plate, the radiation exposure time can be shortened, but the print quality is lower than that of the AR film method, and since it is used at the welding site of the shipyard, the contamination of the CR image plate is severe, It has the disadvantage that the reuse rate of the image plate for CR is remarkably low.

In a less contaminated environment, such as a laboratory, the image plate for CR can theoretically be used about 10,000 times, but it is used within 50 times in actual welding sites.

As another conventional technique, the DR (Digital Radiography) detector is manufactured in a flat panel form for medical purposes such as a general chest examination.

However, the conventional DR detector is very difficult to apply to a pipe having a curved surface. Here, the pipe may be collectively referred to as a pipe member including a tube, a duct, a pipe used for ships or industrial purposes, or a pipe welded portion of the pipe members.

The flat DR detector is partially in contact with a pipe weld having a curved slope, and as a result, the inspection image quality of the pipe weld that is not in contact with the DR detector is very poor.

For example, the time for irradiating the radiation is determined according to the distance between the radiation source and the pipe weld, and the inspection image quality is changed due to the time difference.

For example, pipes connected by welding in shipyards have various sizes, such as large diameters from 20 mm in diameter to 300 mm or more in diameter or up to 64 inches (about 1.6 m). In addition, the irradiation time for the pipe welds may be proportional to the square of the diameter or radius of the pipe. At this time, the DR detector is a flat plate shape and has a flat area determined at the time of manufacturing the factory, and is used in close contact with a curved pipe or a pipe welding part.

As a result, when the DR detector and the pipe welding part face each other, the irradiation time difference is very large between the position where the DR detector and the pipe welding part are in direct contact with each other and the position which is not in direct contact with the DR detector.

In addition, even if the irradiation time and distance are roughly adjusted based on the position of direct contact between the DR detector and the pipe welding part, the number of radiographic inspections is greatly increased, increasing the radiation leakage time in the field, and There are many difficulties.

In addition, since the DR detector is required for each pipe size, the DR detector has a very low efficiency of using equipment, and requires a lot of investment and operating costs.

Therefore, the inspection time can be shortened without causing a problem of inspection image quality with respect to the welded pipe having a curved surface, and the size of the pipe welded parts having different diameters can be actively coped with by increasing the expandability of the DR radiographic inspection. There is an urgent need for the development of highly economical and safe inspection tools.

The present invention includes a folding module and a communication module that convert radiation into an electrical signal and transmit a digital image to a radiographic apparatus in real time, thereby reducing the difference in irradiation time and thereby relatively increasing the inspection image quality. To provide a digital radiography device for piping that can cope with a variety of sizes.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

In order to solve the above problems, the present invention, a plurality of folding module placed on the surface of the pipe, for detecting the radiation irradiated toward the pipe; And a connection part rotatably coupled to the folding module of one side and detachably coupled to the connecting pin of the folding module of the other side such that the folding module is arranged to closely contact the curved surface of the pipe. It may include a photographing device.

In addition, the folding module, the module casing having a relatively narrow body width compared to the diameter of the pipe, the body casing having a relatively long body length compared to the width of the pipe weld; A plurality of sensors disposed in the module casing, the plurality of sensors converting the radiation into electrical signals to generate photographing data for realizing an image for a radiographic apparatus; And a module driver electrically connected to the sensor to control the operation of the sensor, wherein the module driver may have a module identifier for the module casing and a sensor identifier for the sensor.

In addition, the folding module may further include a shock absorbing laminated member provided on the surface of the module casing to be in close contact with the pipe.

The folding module may include an input port and an output port that are electrically connected to the module driving unit and are displayed on the outer surface of the module casing.

The folding module may further include a connection cable connected to the input port or the output port in a timely manner.

The digital radiography apparatus for plumbing may further include a communication module connected to the module driver provided in the folding module through the connection cable, wherein the communication module communicates with a radiographic image device, and photographing data of the sensor. May be transmitted to the radiographic apparatus in real time.

In addition, the connection portion, the plate-shaped body portion extended to correspond to the interval between the folding module; A hinge hole formed at one side of the body part to be rotatably coupled to the hinge part of the folding module; And a fastening hole having a long hole shape formed at the other side of the body portion, wherein the fastening hole may have an opening to be fitted to a connection pin of a folding module to be connected.

In addition, the connection part may further include a stopper for projecting the protrusion by the elastic support in the recess formed on the side of the opening with respect to the direction perpendicular to the direction in which the connection pin enters the fastening hole. .

According to the digital radiography apparatus for piping according to an embodiment of the present invention, since a plurality of folding modules having a plurality of sensors for converting radiation into an electrical signal to implement an image can be interconnected or separated, having a different size There is an advantage that can be easily applied to the welded pipe.

The digital radiography apparatus for piping according to an embodiment of the present invention transmits the digital image information of the sensor of the folding module to the radiographic image device in real time through a communication module electrically connected to the folding module, thereby transmitting radiation in real time to the pipe welding part. The inspection can be realized, the inspection time can be shortened, and stability can be secured beyond the distance constraint.

In the digital radiography apparatus for piping according to the embodiment of the present invention, when the sensor data storage time is set equally or differentially for each folding module or sensor inside the folding module, when the folding module and the pipe welding part face each other, the folding is performed. Irradiation time difference between the position where the module and the pipe weld directly contact each other, or the position that does not directly contact the foldable module is relatively reduced, and as a result, the inspection image quality of the pipe weld can be improved.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned above may be clearly understood by those skilled in the art from the following description. will be.

1 is a perspective view of a digital radiography apparatus for piping according to a first embodiment of the present invention.
FIG. 2 is a device configuration diagram in a state where the digital radiography device for piping shown in FIG. 1 is unfolded.
3 is an enlarged perspective view of the folding module shown in FIG.
4 is an enlarged cross-sectional view of the connector illustrated in FIG. 3.
FIG. 5 is a cross-sectional view of a radiator for a digital radiography device for piping shown in FIG. 1 disposed inside a pipe.
FIG. 6 is a cross-sectional view of a radiator for a digital radiography device for piping shown in FIG. 1 disposed outside of a pipe; FIG.
7 is a cross-sectional view showing the inside of the folding module shown in FIG.
FIG. 8 is a flowchart illustrating a control method of the digital radiography apparatus for piping shown in FIG. 1.
FIG. 9 is a flowchart illustrating a process of setting a radiation detection delay time of the folding module illustrated in FIG. 8.
10 is a perspective view illustrating a folding module of a digital radiography apparatus for piping according to a second embodiment of the present invention.
FIG. 11 is a cross-sectional view of a plurality of foldable modules shown in FIG. 10 connected to a pipe welding part.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The detailed description, which will be given below with reference to the accompanying drawings, is intended to explain exemplary embodiments of the present invention and is not intended to represent the only embodiments in which the present invention may be practiced.

In the drawings, parts irrelevant to the description may be omitted, and the same reference numerals may be used for the same or similar elements throughout the specification.

In embodiments of the present invention, the expression 'or', 'at least one', etc. may represent one of the words listed together or a combination of two or more.

In addition, in the embodiments of the present invention, the pipe may mean a pipe member including any one of a tube, a duct, a pipe which is in contact or non-contact with the folding module to be described later, or a pipe welded portion that is welded to each other.

[First Embodiment]

In the drawings, FIG. 1 is a perspective view of a digital radiography apparatus for plumbing according to a first embodiment of the present invention, and FIG. 2 is a device configuration diagram in which the digital radiography apparatus for plumbing shown in FIG. 1 is unfolded.

1 and 2, the digital radiography apparatus 10 for plumbing includes a folding module 100, 100a, a connection unit 200, a radiation irradiator 300, a communication module 400, and a radiation imaging apparatus 500. It may include.

The radiation irradiator 300 may be disposed and used in an internal space or an external space of the folding modules 100 and 100a.

The radiation irradiator 300 may be connected to the radiation imaging apparatus 500 by wire or wirelessly, and may be remotely controlled by the radiation imaging apparatus 500.

On the other hand, the radiation irradiator 300 is controlled by a separate controller (not shown) connected to the radiation irradiator 300 to be interlocked with the radiation imaging apparatus 500, so that the pipe 1 or the pipe weld 2 or the folding module. Radiation can be irradiated toward (100, 100a).

The communication module 400 may be general communication means for interconnecting the folding modules 100 and 100a and the radiographic imaging apparatus 500 by communication.

The radiographic imaging apparatus 500 may include a display device for real time inspection and a memory for image storage.

The radiographic imaging apparatus 500 may record and store a program having a user interface for inputting a sensor data storage time, which will be described later.

For example, the user interface may display a folding module image in an unfolded state on the screen of the display device of the radiographic image apparatus 500, and may also provide an input means (eg, a time input box) for each folding module image on the screen.

The folding module (100, 100a) is placed on the surface of the pipe (1) or pipe welds (2), and serves to detect the radiation irradiated toward the pipe (1). Folding module (100, 100a) may be used alone or connected to a plurality.

The connection part 200 may be a mechanical or physical connection means for making the folding module 100, 100a into a set.

For example, the folding module (100, 100a) may be connected in the form of a scroll through the connecting portion 200 or in the form of a chain, as a result, the folding module (100, 100a) through the connecting portion 200 pipe (1) Alternatively, it may be folded or unfolded so as to be in close contact with the curved surface of the pipe weld 2.

Here, the close contact with the curved surface may mean that a part of each of the folding modules 100 and 100a is partially in contact with the pipe 1 or the pipe welding part 2.

Connection portion 200 for this may be provided for each folding module (100, 100a).

For example, each connecting portion 200 is provided in the folding module (100, 100a) in pairs, respectively.

In addition, the folding module (100, 100a) is disposed on the outside of the pipe (1) to be in close contact with the pipe welded portion 2 or the curved surface of the pipe (1).

The number of connections of the foldable modules 100 and 100a may be expanded or reduced to correspond to the size of the pipe 1 or the pipe weld 2 or the length of the weld line. Accordingly, the folding module (100, 100a) of the present invention has the advantage that can increase the utilization of the radiographic inspection.

At this time, each connection part 200 may be rotatably coupled to the folding module 100 on one side, and detachably coupled to the connecting pin 111 of the folding module 100a on the other side. Here, the pipe welding portion 2 is a portion where the pipes 1 are connected to each other by welding, and may refer to a welding line and a pipe portion around the welding line.

Each folding module 100, 100a may include a module casing 110, a sensor 120, and a module driver 130, respectively.

As shown in FIG. 2, each of the folding modules 100 and 100a has a body width W that is relatively narrow compared to the diameter of the pipe 1 of FIG. 1, and the width T of the pipe welding part 2. It can have a relatively long body length (L).

The body width W of each of the folding modules 100 and 100a is physically smaller than that of a conventional DR (Digital Radiography) detector.

For this reason, the irradiation time can be reduced to less than 10% compared to the conventional DR detector, and also the inspection time can be shortened, and the inspection stability can be secured as compared with the conventional DR (Digital Radiography) detector.

Thousands or tens of thousands of sensors 120 are arranged or arranged along the plane direction inside the foldable modules 100 and 100a.

For example, the sensor 120 may be a direct sensing means for directly converting radiation into an electrical signal and an indirect sensing means for indirectly converting the radiation.

That is, the sensor 120 may be formed of a photoconductor (eg, amorphous selenium) layer and a thin film transistor layer, which are materials that directly convert radiation photons into electric charges, or a flash layer and a charge coupled device (CCD) made of a material such as cesium. ), Or a combination of a flash layer, an amorphous silicon photodiode, and a thin film transistor.

The sensor 120 may not be limited to a specific sensing means within a range capable of generating photographing data capable of communication according to an electrical signal.

In this way, the plurality of sensors 120 may be arranged in plural in each module casing 110, and convert the radiation into an electrical signal to generate photographing data for implementing an image for a radiographic apparatus.

The module driver 130 is electrically connected to the sensor 120 and plays a role of controlling the operation of the sensor 120. That is, the module driver 130 is responsible for inputting the electrical signal output from the sensor 120 toward the communication module 400.

At this time, the module driver 130 has a module identifier (eg module number or module name) for the module casing 110 and a sensor identifier (eg sensor position information) for the sensor 120, and the module identifier and sensor identifier The electrical signal can be transmitted to the communication module 400 together.

Here, the sensor identifier may be provided in the module driver 130 or each sensor 120.

The radiographic imaging apparatus 500 displays the image corresponding to the radiographic inspection in real time through the display device of the radiographic imaging apparatus 500 based on an electrical signal transmitted with the module identifier or the sensor identifier by communicating with the communication module 400. can do.

Therefore, a user of a department that performs reading, such as a ship owner or a quality control unit, may perform a radiographic inspection in real time through the communication module 400 and the radiation imaging apparatus 500.

3 is an enlarged perspective view of the folding module shown in FIG.

Referring to FIG. 3, each folding module 100 may further include a shock absorbing stacking member 140 provided on the surface of the module casing 110 to be in close contact with the pipe described above.

Here, the shock absorbing laminated member 140 may be a rubber plate, a silicon plate, or the like, and may be not limited to a specific material as long as the material has elasticity or may act as a shock absorber.

The shock absorbing laminated member 140 may be attached to a surface contacting a pipe or a pipe welding part, for example, a bottom surface of the module casing 110, and does not cause scratches or cracks due to contact to the module casing 110. Can play a protective role.

In addition, each folding module 100 may include an input port 150 and an output port 151, and may also include a connection cable 160 of FIG. 2, which may be connected to the corresponding ports 150 and 151, respectively. have.

The input port 150 and the output port 151 are electrically connected to the module driver 130 for each folding module 100 described above, and are displayed on the outer surface of the module casing 110.

In addition, the connection cable 160 is electrically connected to the input port 150 or the output port 151 (for example, a serial link or a parallel link) to interconnect the folding modules 100 and 100a or to the folding module ( 100, 100a) and the communication module 400 serves to connect each other.

That is, the communication module 400 included in the digital radiography apparatus 10 for plumbing according to the first embodiment is connected to the module driving unit 130 provided in the folding modules 100 and 100a through the connection cable 160. do.

Accordingly, the communication module 400 communicates with the radiation imaging apparatus 500, and as a result, the imaging data of the sensors 120 of all the folding modules 100 and 100a may be transmitted to the radiation imaging apparatus 500 in real time.

In addition, the connection cable 160 may be provided to correspond to the number of the folding module (100, 100a) and the number of the communication module 400.

4 is an enlarged cross-sectional view of the connector illustrated in FIG. 3.

3 and 4, the connection part 200 includes a plate-shaped body part 210 extended to correspond to the gap between the folding module 100.

In addition, the connection part 200 includes a hinge hole 211 rotatably coupled to the hinge part 112 of the folding module 100.

Here, the hinge hole 211 is formed on one side of the body portion 210 based on the thickness direction of the body portion 210.

In addition, the connection part 200 includes a fastening hole 212 for fastening to the connection pin 111 of the folding module to be connected.

Here, the fastening hole 212 is formed on the other side of the body portion 210, based on the thickness direction of the body portion 210.

In particular, the fastening hole 212 is formed in a long hole shape, it may play a role of preventing the interference that can occur when the mutual rotation between the folding module 100 with respect to the connection portion 200.

In addition, an opening 213 is formed in one portion of the fastening hole 212 to be fitted to the connection pin 111 of the folding module to be connected.

In addition, the connection part 200 may further include a stopper 220 that does not facilitate the separation between the connection pin 111 and the connection part 200.

Here, the stopper 220 has a protrusion 221 serving as a variable protrusion jaw. In addition, the stopper 220 is a spring for the movement of the protrusion 221, or has an elastic support 222 made of an elastic material.

In addition, the stopper 220 has a recess 223.

Here, the recess 223 is formed on the side surface of the opening 213 of the fastening hole 212 based on a direction perpendicular to the direction in which the connecting pin 111 enters the fastening hole 212. The elastic support part 222 plays a role of elastically supporting the protrusion part 221 in the recess part 223.

The stopper 220 plays a role in projecting the protruding portion 221 by the elastic support portion 222 in the recess 223 according to the contact with the connecting pin 111, and once entered into the fastening hole 212. The connection pin 111 does not easily fall out of the fastening hole 212, and as a result, the rotatable connection state between the folding modules 100 in use can exhibit the advantage that it can be maintained relatively stable.

As shown in FIG. 3, each connection part 200 may be provided in pairs based on both ends corresponding to the longitudinal direction of the folding module 100.

FIG. 5 is a cross-sectional view of a radiator for a digital radiography device for plumbing shown in FIG. 1 disposed inside the pipe, and FIG. 6 is a radiator for a digital radiography device for plumbing shown in FIG. 1 outside the pipe. One cross section.

Referring to FIG. 5 or 6, the folding modules 100 and 100a may be connected to each other by the connection part 200.

In addition, the folding modules 100 and 100a may be electrically connected to each other through the connection cable 160 and may also be connected to the communication module 400.

The folding modules 100 and 100a surround the outside of the pipe 1 or the pipe welding portion to be inspected, and as a result, the arrangement angle of each of the folding modules 100 and 100a is naturally adjusted toward the center of the pipe 1. Can be.

The shock absorbing laminated member 140 is interposed between the outer circumferential surface of the pipe 1 or the pipe welding portion and the module casing of the folding modules 100 and 100a, thereby preventing surface damage of the folding modules 100 and 100a due to repeated use. It can play a role in preventing.

As shown in FIG. 5, the radiation irradiator 300 may be disposed based on the inside of the pipe 1 or the center of the pipe 1 and may irradiate the radiation toward the folding modules 100 and 100a.

At this time, since the irradiation distance (R) of the radiation between each folding module (100, 100a) and the radiation irradiator 300 may all be the same, the quality of the image for the radiographic image obtained by the folding module (100, 100a) All have the advantage of being good.

The non-shooting region generated due to the gap or gap between each folding module 100 may be removed by re-shooting after moving all folding modules 100 and 100a along the circumferential direction of the pipe 1.

As shown in FIG. 6, the radiation irradiator 300 may be disposed outside the pipe 1 and may irradiate radiation toward the folding modules 100 and 100a.

At this time, since the irradiation distance (R1, R2) of the radiation between the folding module (100, 100a) and the radiation irradiator 300 may be different from each other, the sensor for each folding module (100, 100a) is a data according to the irradiation The quality of the image for the radiographic apparatus can be improved by adjusting or setting the storage time. As in the control method described below, the time at which the sensor stores data according to irradiation may mean a sensor data storage time, and may be described in detail in setting a radiation detection delay time.

The radiation irradiated from the radiation irradiator 300 first reaches the folding module 100a at a position close to the radiation irradiator 300, and is farther apart from the folding module 100a in response to the curved slope of the pipe 1. Arrive at another folding module 100 having a distance M.

At this time, the difference distance (M) can be determined in advance in consideration of the diameter or radius of the pipe (1) to be used and the shape size of the folding module (100, 100a), the folding module 100 corresponding to the difference distance (M) The sensor data storage time of) can also be known in advance through experiments.

Accordingly, the user may secure the quality of the image for the radiographic apparatus by setting the sensor data storage time for each of the folding modules 100 and 100a in the radiographic imaging apparatus 500 before the inspection.

7 is a cross-sectional view showing the inside of the folding module shown in FIG.

Referring to FIG. 7, the radiation irradiator 300 may be disposed toward the folding module 100 based on the reference line CL passing through the center of the pipe 1.

As mentioned above, each folding module 100 that receives radiation from the irradiator 300 has thousands or tens of thousands of sensors 120, 121, 122.

These sensors 120, 121, 122 are arranged or arranged along the plane direction inside the folding module 100.

In this case, each of the sensors 120, 121, and 122 may be electrically connected and may be recognized or predetermined by the module driver 130 having a sensor identifier (for example, 1 to 20,000). W2, W3, W4) may be arranged for each.

That is, the sensor arrangement periods W1, W2, W3, and W4 may refer to arrangement intervals or positions of the 120, 121, and 122.

Therefore, the detection timing for each sensor arrangement section W1, W2, W3, W4 of each sensor 120, 121, 122 is set the same or the same so that radiation can be detected.

In addition, the radiation detection time of the folding module 100 that is each unit module may be adjusted.

For example, the position of each sensor 120, 121, 122 may be determined through the sensor identifier in the sensor arrangement periods W1, W2, W3, and W4 of the sensors 120, 121, and 122.

That is, the first to tenth sensors 121 and 122 disposed in the third and fourth sections W3 and W4 detect and store data for 1.5 seconds, and the first to tenth to twenty thousand sensors ( 120 and 123 may detect and store data at one second.

That is, the central irradiation distance (R3) and the outer irradiation distance (R4) of the radiation reaching the sensor arrangement section (W1, W2) and the outer sensor arrangement section (W3, W4) of the center side of the folding module 100 Since the irradiation time of the radiation is different due to the difference in distance between the), there is an advantage that can be solved the problem caused in quality.

Hereinafter, a control method of a digital radiography apparatus for pipes according to the present embodiment will be described.

8 is a flowchart illustrating a control method of the digital radiography apparatus for plumbing shown in FIG. 1, and FIG. 9 is a flowchart for explaining a radiation detection delay time setting process of the folding module illustrated in FIG. 8.

8 and 9, according to a control method of a digital radiography apparatus for plumbing, a folding module equipped with a sensor for converting radiation toward a plumbing into an electrical signal to implement an image for a radiographic apparatus is connected to each other. Connecting and placing the folding module toward the center of the pipe so that the surface of the folding module is in close contact with the curved surface of the pipe (S110).

Thereafter, the step S120 of setting the radiation detection delay time of the folding module may be performed by the radiation imaging apparatus connected to the sensor of the folding module.

Setting the radiation detection delay time (S120) may be described in detail with reference to FIG. 9.

In addition, after the radiation detection delay time is set, a digital radiography step S130 of irradiating the radiation from the radiation imaging apparatus may be performed to detect a defect in a pipe or a pipe weld.

Thereafter, in operation S140, the photographing data generated by the sensor is transmitted to the radiation imaging apparatus through a communication module connected to the folding module according to the radiation irradiation.

In operation S150, the radiographic imaging apparatus displays the photographing data, thereby real-time confirmation is performed, and the photographing data is stored in a memory of the radiographic imaging apparatus.

Referring to FIG. 9, the setting of the radiation detection delay time (S120) may include setting a detection timing for each folding module (S201) (see FIG. 5 or FIG. 6) and detecting timing for each sensor arrangement section of the folding module. Setting may include a process S202 (FIG. 7).

Here, according to the step (S201) of setting the detection timing for each folding module, the radiographic apparatus based on the module identifier of the module driving unit for each folding module based on the module array position and the time input box for each module arrangement position of the folding module Is displayed on the display device.

In addition, in order to determine the detection timing of the folding module for each module arrangement position, the sensor data storage time delayed from the irradiation time of the irradiator may be input to the radiographic apparatus through the time input field for each module arrangement position.

On the other hand, in the process of setting the detection timing for each folding module (S201), when the folding module is disposed on the outer peripheral surface of the pipe, the radiation irradiator of the radiographic apparatus is disposed in the center of the pipe (see Fig. 5), the sensor data storage The time can all be input identically through the time input field of each module arrangement position.

When the folding module is disposed on the outer circumferential surface of the pipe and the radiation irradiator of the radiographic apparatus is disposed outside of the pipe opposite to the folding module with the pipe in between (see FIG. 6), the sensor data storage time is A time input field for each module arrangement position may be differentially input corresponding to the irradiation distance ratio between the irradiator and the folding module.

In addition, referring to FIG. 7, in the case of setting the detection timing for each sensor arrangement section of the folding module (S202), the radiographic apparatus includes the sensor arrangement section and the sensor arrangement section based on the sensor identifier of the module driver for each folding module. The time input field may be displayed on the display device.

In addition, in order to determine the detection timing of the sensor for each sensor arrangement section, the sensor data storage time delayed from the irradiation time point of the irradiator may be differentially input to the radiographic apparatus through the time input box for each sensor arrangement section.

Second Embodiment

The high-definition digital radiography apparatus for piping described in this embodiment may be the same as or very similar to the first embodiment except for a module casing having a casing step.

Therefore, the same or similar reference numerals will be given to the same or corresponding components in FIGS. 1 to 11, and the description thereof will be omitted here.

FIG. 10 is a perspective view illustrating a folding module of a digital radiography apparatus for plumbing according to a second embodiment of the present invention. FIG. 11 is a cross-sectional view of the folding module shown in FIG. .

Referring to FIG. 10, the digital radiography apparatus for pipes according to the second embodiment is placed on the surface of the pipe 1 and converts the radiation into electrical signals so as to detect radiation irradiated toward the pipe 1. A plurality of folding modules (100b) equipped with a plurality of sensors (120, 124) for generating imaging data for implementing an image for a radiographic device, the folding module (100b) corresponds to the curved surface of the pipe (1) To be arranged in close contact with each other, it may include a connecting portion (200) rotatably coupled to the folding module (100b) of one side, detachably coupled to the connecting pin of the folding module (not shown) of the other side.

The folding module 100b according to the second embodiment of the present invention has a casing body so as to cover a gap G between the casing body portion 101 which is in physical contact with the pipe and the folding module 100b as shown in FIG. 11. It comprises a module casing 110 having a casing step portion 102 integrally formed to have a step shape at the end of the portion 101.

In this case, the folding module 100b may also include a module driving unit which may be provided inside the folding module 100b as described in the first embodiment.

As described above, the module driving unit may be electrically connected to the sensors 120 and 124 to control the operation of the sensors 120 and 124, and may have a module identifier and a sensor identifier.

In addition, the folding module 100b according to the second embodiment may also have an input port 150 and an output port 151 that are electrically connected to the module driving unit and are displayed on the outer surface of the casing body unit 101. have.

In addition, the sensors 120 and 124 of the folding module 100b are also distributed and mounted inside the casing body 101 and inside the casing step 102.

In particular, the sensor 124 disposed in the casing step portion 102 above the gap G detects radiation with a delayed time difference relative to the sensor 120 disposed in the casing body portion 101, and Corresponding data can be stored.

Due to the difference in the distance between the irradiation distance RG on the side of the gap G and the irradiation distance R on the casing body part 101, the irradiation time of the radiation is different, so there is an advantage that the problem caused in quality can be solved. .

In addition, the folding module (100b) may include a shock absorbing laminated member (140, 141), the hinge portion 112, the connection pin 111.

That is, the shock absorbing stacking members 140 and 141 may be provided on the bottom surface of the casing body portion 101 and the bottom surface of the casing step portion 102 in the module casing 110.

In addition, the hinge portion 112 may be formed on one side of both ends of the casing body portion 101 so as to be rotatably coupled to the connecting portion 200.

In addition, the connecting pins 111 may be formed on the other side of both ends of the casing body portion 101, respectively.

As described above, the digital radiography apparatus for plumbing according to the present exemplary embodiments has various sizes because a plurality of folding modules having a plurality of sensors for converting radiation into electrical signals to implement an image may be interconnected or separated through a connection. There is an advantage that can be easily applied to the welded pipe.

In addition, the digital radiography apparatus for piping transmits the digital image information of the sensor of the folding module to the radiographic apparatus in real time through the communication module, thereby real-time radiographic inspection of the pipe welds, and can reduce the inspection time In addition, there is an effect that can ensure stability beyond the distance constraints.

In addition, the digital radiography apparatus for pipes has an advantage of significantly reducing inspection time by reducing radiation re-photographing by detecting radiation with a sensor of a casing step with respect to a gap between the folding modules.

As a result, there is an advantage to improve the inspection image quality for the pipe welds.

The embodiments of the present invention disclosed in the specification and the drawings are only specific examples to easily explain the technical contents of the present invention and aid the understanding of the present invention, and are not intended to limit the scope of the present invention. Therefore, the scope of the present invention should be construed that all changes or modifications derived based on the technical spirit of the present invention are included in the scope of the present invention in addition to the embodiments disclosed herein.

100, 100a, 100b: folding module 101: casing body
102: casing step 110: module casing
111: connecting pin 112: hinge portion
120, 121, 122, 123, 124: sensor 130: module driver
140, 141: laminated member 150: input port
151: output port 160: connection cable
200: connection portion 300: radiation irradiator
400: communication module 500: radiation imaging apparatus

Claims (8)

A plurality of folding modules placed on a surface of the pipe and detecting radiation irradiated toward the pipe; And
And a connection part rotatably coupled to the folding module of one side and detachably coupled to the connecting pin of the folding module of the other side so that the folding module is arranged to closely contact the curved surface of the pipe. Device. The method of claim 1,
The folding module,
A module casing having a body width relatively narrow compared to the diameter of the pipe and having a body length relatively long compared to the width of the pipe welding part;
A plurality of sensors disposed in the module casing, the plurality of sensors converting the radiation into electrical signals to generate photographing data for realizing an image for a radiographic apparatus; And
And a module driver electrically connected to the sensor to control the operation of the sensor.
And said module driver has said module casing module identifier and said sensor sensor identifier. The method of claim 2,
The folding module,
And a shock absorbing laminated member provided on the surface of the module casing to be in close contact with the pipe. The method of claim 3, wherein
The folding module,
And an input port and an output port that are electrically connected to the module driving unit and are displayed on an outer surface of the module casing. The method of claim 4, wherein
The folding module,
And a connecting cable electrically connected to the input port or the output port. The method of claim 5,
The piping digital radiography device,
Further comprising a communication module connected to the module driving unit provided in the folding module via the connection cable,
And the communication module communicates with the radiographic imaging apparatus and the photographing data of the sensor is transmitted in real time to the radiographic imaging apparatus. The method of claim 1,
The connecting portion,
A plate-shaped body portion extended to correspond to a gap between the folding modules;
A hinge hole formed at one side of the body part to be rotatably coupled to the hinge part of the folding module; And
Includes; fastening hole of the long hole shape formed on the other side of the body portion,
And an opening is formed in the fastening hole so as to be fitted into the connection pin of the folding module to be connected. The method of claim 1,
The connecting portion,
And a stopper for projecting the protruding portion by the elastic support portion in the recess portion formed on the side of the opening with respect to the direction perpendicular to the direction in which the connecting pin enters the fastening hole.

Images