JP7271058B2 - X-ray inspection device - Google Patents

Description

The present invention relates to an X-ray inspection apparatus.

At present, various pipes such as gas pipes, water pipes, etc. are buried under the ground in a mixed manner as essential lines of daily life. In such piping, wear and corrosion may occur on the inner surface of the piping and welded portions depending on the usage conditions. Abrasion and corrosion of piping may lead to serious accidents due to leakage of fluid or gas flowing through the piping. For this reason, it is necessary to periodically inspect the inner surface or shape of the pipe, and inspect the welded portions for defective welding.

Conventionally, there has been proposed a pipe diagnosis method for safely diagnosing corrosion by imaging a diagnosis site at high speed with a very small dose of radiation (see, for example, Patent Document 1). This pipe diagnosis method includes irradiation means for irradiating radiation, conversion means for converting the radiation into light rays, imaging means for imaging the light rays converted by the conversion means, and display means for displaying an image picked up by the imaging means on a screen. In the method of diagnosing piping using a method of irradiating a diagnostic portion of the piping with radiation, the radiation passing through the diagnostic portion is converted into a light beam. Then, the light beam is imaged by the imaging means, and the imaged image is displayed on the display means. As a result, the diagnosis time can be shortened and the corrosion diagnosis can be safely performed.

JP 2009-014514 A

However, in the piping diagnosis method described in Patent Document 1, it is difficult to position the irradiating means with respect to the piping, and a situation may occur in which radiation cannot be appropriately irradiated to a desired diagnostic site. In particular, pipes to be diagnosed have various shapes and sizes, and it is extremely difficult to quickly position the irradiation means for such pipes on site. As a result, a situation may occur in which radiation cannot be applied to a desired position and the piping cannot be properly diagnosed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an X-ray inspection apparatus capable of appropriately inspecting the condition of pipes without requiring complicated installation work for the pipes. one.

The X-ray inspection apparatus of the present embodiment is an X-ray inspection apparatus that is installed on the outer peripheral surface of a pipe to be inspected and inspects the state of the pipe by irradiating the pipe with X-rays. an X-ray irradiation unit that emits X-rays; and a pair of installation auxiliary units that are rotatably connected to the X-ray irradiation unit and have a cylindrical casing , wherein the X-rays The irradiation unit is formed with an irradiation section that irradiates X-rays toward the pipe on a virtual line passing through the center of the X-ray irradiation unit and the center of the pipe. A pair of units arranged axisymmetrically with respect to an imaginary line, having a rotation fulcrum at one end connected to the X-ray irradiating unit, and a pair of each of the installation assistance units arranged around the rotation fulcrum and meshing with each other , and the outer peripheral portion on the other end side of the rotation fulcrum is directed toward the outer peripheral surface of the pipe, and each of the installation auxiliary units is connected to the virtual line via the pair of connection gears. By interlocking with each other to rotate while maintaining the same angle, the pair of installation auxiliary units are brought into contact with the outer peripheral surface of the pipe in a state in which the X-ray irradiation unit is arranged in the center of the installation auxiliary unit. is characterized by

ADVANTAGE OF THE INVENTION According to this invention, the state of piping can be inspect|inspected appropriately, without requiring the complicated installation work with respect to piping.

1 is a perspective view schematically showing the appearance of an X-ray inspection apparatus according to this embodiment; FIG. FIG. 2 is a front view of an X-ray generation unit included in the X-ray inspection apparatus according to this embodiment; It is explanatory drawing of the state which installed the X-ray inspection apparatus which concerns on this Embodiment on the outer peripheral surface of piping. It is explanatory drawing of the state which installed the X-ray inspection apparatus which concerns on this Embodiment on the outer peripheral surface of piping.

BACKGROUND ART Gas pipes and water pipes, which are buried underground as the main lines of daily life, may wear out or corrode the inner surface of the pipes or welded portions depending on the usage conditions. Abrasion and corrosion of piping may lead to serious accidents due to leakage of fluid or gas flowing through the piping. For this reason, it is necessary to periodically inspect the inner surface or shape of the pipe, and inspect the welded portions for defective welding. As a method for inspecting such pipes, there is known a method of irradiating the pipes with X-rays from an irradiation device, receiving the X-rays transmitted through the pipes with an image receiving device, and inspecting the state of the pipes from the received image. It is

However, in such a pipe inspection method, pipes to be inspected have various shapes and sizes. It is difficult to quickly install an irradiation device on the outer peripheral surface of such a pipe on site. For example, a jig dedicated to inspection is attached to a pipe, and an irradiation device is installed on the pipe via this jig. In this case, the operation of attaching the jig itself is required, and the operation of the entire inspection method becomes complicated. In particular, if the desired position is not irradiated with X-rays after attachment, the position adjustment work is required, further complicating the work of the entire inspection method. Conventionally, there has been a demand for appropriately inspecting the condition of piping without requiring complicated installation work for such piping.

When the present inventors install the X-ray inspection device on the pipe, intervening a jig that has a different structure from the X-ray inspection device complicates the installation work and requires further position adjustment work. I paid attention to the fact that Furthermore, the inventors have paid attention to the fact that the pipes to be inspected come in various shapes and sizes, which complicates the installation work. In addition, providing a part of the X-ray inspection device with the function of installing pipes of various shapes and sizes contributes to properly inspecting the condition of pipes without requiring complicated installation work. The inventors have found that they do, and arrived at the present invention.

That is, the gist of the present invention is to irradiate an irradiating unit that irradiates X-rays toward the piping on a virtual line that passes through the center of an X-ray irradiation unit that irradiates X-rays to the piping and the center of the piping. A pair of installation assistance units formed into a unit and rotatably connected to the X-ray irradiation unit are arranged line-symmetrically with respect to the virtual line, and each installation assistance unit is positioned between the virtual line. is to rotate while maintaining the same angle.

According to the present invention, each of the installation auxiliary units arranged in line symmetry with respect to the virtual line passing through the center of the X-ray irradiation unit and the pipe rotates while maintaining the same angle with respect to the virtual line. Therefore, regardless of the external dimensions of the pipe, the pair of auxiliary installation units can be brought into contact with the outer peripheral surface of the pipe while the X-ray irradiation unit is arranged in the center. On the other hand, in the X-ray irradiation unit, an irradiation section is formed on an imaginary line passing through the center of the X-ray irradiation unit and the pipe. For this reason, the X-ray irradiation unit is installed so that X-rays are irradiated toward the center of the pipe by bringing a pair of auxiliary installation units into contact with the outer peripheral surface of the pipe while the X-ray irradiation unit is arranged in the center. be done. As a result, X-rays can always be emitted from the irradiation unit toward the center of the pipe. As a result, it is possible to appropriately inspect the condition of the pipe without requiring complicated installation work for the pipe.

The configuration of the X-ray inspection apparatus according to this embodiment will be described below with reference to the drawings. FIG. 1 is a perspective view schematically showing the appearance of an X-ray inspection apparatus 100 according to this embodiment. Hereinafter, the up-down direction, left-right direction, and front-back direction shown in FIG.

FIG. 1 shows a state during X-ray inspection of piping by an X-ray inspection apparatus 100 according to the present embodiment. In addition, in FIG. 1, the piping to be inspected is omitted for convenience of explanation. Also, in FIG. 1, X-rays emitted from the X-ray irradiation unit of the X-ray inspection apparatus 100 are indicated by dashed lines. In FIG. 1, a part of the configuration of the X-ray inspection apparatus 100 is omitted for convenience of explanation. In FIG. 1, please refer to the contents shown in the drawings after FIG. 2 for the parts different from the contents shown in the drawings after FIG.

As shown in FIG. 1, the X-ray inspection apparatus 100 has an X-ray generation unit 101. As shown in FIG. The X-ray generation unit 101 includes an X-ray irradiation unit (hereinafter simply referred to as “irradiation unit”) 1 and a pair of installation auxiliary units (hereinafter simply referred to as “auxiliary units”) 2 and 3 . Note that the configuration of the X-ray generation unit 101 is not limited to this, and can be changed as appropriate.

The irradiation unit 1 irradiates X-rays to a pipe to be inspected. The irradiation unit 1 has a main body 10 having a generally cylindrical shape. The body portion 10 is arranged to extend in the front-rear direction shown in FIG. 1 . Inside the main body 10, an X-ray irradiation unit (hereinafter simply referred to as “irradiation unit”) 11 that has a radiation source that generates X-rays and that irradiates the pipe with X-rays is accommodated. The irradiation unit 11 irradiates X-rays downward as shown in FIG. A grip portion 12 is provided on the upper portion of the main body portion 10 . The grip part 12 is used when carrying the irradiation unit 1 . Covers 10a and 10b for fixing parts of the auxiliary units 2 and 3 are attached to the front and rear of the main body 10. As shown in FIG. These covers 10a and 10b are fixed to the main body 10 by fixing screws (see FIG. 3B).

A pair of auxiliary units 2 and 3 are connected to the irradiation unit 1 . The auxiliary units 2 and 3 play a role of assisting the installation of the X-ray generation unit 101 on the piping. Each of the auxiliary units 2 and 3 has the same configuration except for the configuration inside the casing sections 20 and 30 which will be described later. The auxiliary unit 2 (3) has a generally cylindrical casing 20 (30). The housing sections 20 and 30 are arranged so as to extend parallel to the body section 10 of the irradiation unit 1 . Links 21 and 22 (31 and 32) are provided in the vicinity of the ends in the front-rear direction of the housing portion 20 (30). The auxiliary unit 2 (3) is rotatably connected to the irradiation unit 1 via these links 21, 22 (31, 32). A detailed configuration of the auxiliary units 2 and 3 will be described later.

A control device (not shown) for controlling the irradiation unit 1 is housed inside the housing portion 20 . An operation unit (not shown) for operating the control device is provided on the outer peripheral surface of the housing unit 20 . The operation unit receives instructions from an operator who inspects the condition of the piping. The irradiation unit 1 generates X-rays according to the control of the control device based on the instruction from the operation unit, and irradiates the pipes with the X-rays. For example, the control device and the irradiation unit 1 are connected by wire, but are not limited to this, and may be connected wirelessly.

A battery (driving power source) (not shown) for supplying power to the irradiation unit 1 is accommodated inside the housing portion 30 . The housing unit 30 is configured such that the battery can be replaced via an opening/closing cover (not shown). The irradiation unit 1 is powered by a battery housed in the housing 30 and driven to generate X-rays. The power supply from the battery in the housing part 30 is performed, for example, through wiring arranged in the links 31 and 32, but is not limited to this.

The X-ray inspection apparatus 100 has an X-ray image receiving unit (hereinafter simply referred to as “image receiving unit”) 102 . An image receiving surface 102 a is provided on the upper surface of the image receiving unit 102 . The image-receiving surface 102a receives an image of X-rays emitted from the irradiation unit 1 toward the pipe and transmitted through the pipe. The image receiving unit 102 is connected to, for example, a PC (Personal Computer) by wire or wirelessly. Any terminal can be applied to the object to which the image receiving unit 102 is connected on the assumption that it has a display means.

The PC displays the X-ray image received by the image receiving unit 102 on the display. A worker who inspects the condition of the pipe can determine the condition of the pipe by checking the X-ray image displayed on the display. Note that the PC may synthesize a plurality of X-ray images received by the image receiving unit 102 to generate a moving image. For example, by synthesizing a plurality of X-ray images obtained by the X-ray inspection apparatuses 100 installed at different positions in the pipe, the state of the entire pipe can be determined.

Here, the configuration of the X-ray generation unit 101 according to this embodiment will be described with reference to FIG. FIG. 2 is a front view of the X-ray generating unit 101 included in the X-ray inspection apparatus 100 according to this embodiment. 2 shows the X-ray generation unit 101 from the front side shown in FIG. In FIG. 2, for convenience of explanation, the grip portion 12 of the irradiation unit 1 and the structure arranged on the front side of the links 21 and 31 (the cover 10a arranged on the front side of the link 21) are omitted. (See Figure 1). For convenience of explanation, FIG. 2 shows the center C2 of the pipe to be inspected.

FIG. 2A shows a state in which the pair of auxiliary units 2 and 3 are fully opened. In the X-ray generation unit 101 according to this embodiment, the state shown in FIG. 2 is assumed to be the initial state. FIG. 2B shows a state in which the pair of auxiliary units 2 and 3 are slightly closed from the state (initial state) shown in FIG. 2A. As shown in FIG. 2B, the pair of auxiliary units 2 and 3 are configured to be rotatable so that the housing section 20 and the housing section 30 are brought closer to each other from the initial state.

As shown in FIG. 2, one auxiliary unit 2 is rotatably connected to the irradiation unit 1 with the center of a connecting shaft 24 disposed on one end side (right end side, base end side) of a link 21 as a fulcrum of rotation. It is The connecting shaft 24 is arranged below the center C<b>1 of the main body 10 and near the outer periphery on the left side of the main body 10 . A connection gear 23 is attached to the connection shaft 24 . The connection gear 23 is rotatable around the center of the connection shaft 24 as a fulcrum of rotation. The link 21 is attached to the body portion 10 via a connection gear 23 . The link 21 is fixed to the connection gear 23 and rotates together with the connection gear 23 . The housing part 20 is fixed to the other end side (the left end side, the tip end side) of the link 21 . The auxiliary unit 2 is connected to the main body 10 so that the link 21 extends toward the lower left side in a front view.

Similarly, the other auxiliary unit 3 is rotatably connected to the irradiation unit 1 with the center of the connecting shaft 34 disposed at one end (left end) of the link 31 as the fulcrum of rotation. The connecting shaft 34 is arranged below the center C of the main body 10 and near the outer periphery on the right side of the main body 10 . A connection gear 33 is attached to the connection shaft 34 . The connection gear 33 is configured to be rotatable about the center of the connection shaft 34 as a fulcrum of rotation. The link 31 is attached to the main body 10 via a connecting gear 33 . The link 31 is fixed to the connection gear 33 and rotates together with the connection gear 33 . The housing part 30 is fixed to the other end side (right end side) of the link 31 . The auxiliary unit 3 is connected to the main body portion 10 so that the link 31 extends toward the lower right side when viewed from the front.

These auxiliary units 2 and 3, except for the tooth portions of the connecting gears 23 and 33, are arranged on the basis of a virtual line L passing through the center C1 of the body portion 10 of the irradiation unit 1 and the center C2 of the pipe to be inspected. arranged symmetrically. That is, when the auxiliary unit 2 is folded back 180 degrees with respect to the imaginary line L, the auxiliary unit 2 is arranged to overlap the auxiliary unit 3 except for the teeth of the connecting gear 23 .

As shown in FIG. 2 , the connection gear 23 of the auxiliary unit 2 and the connection gear 33 of the auxiliary unit 3 mesh with each other near the center of the main body 10 . That is, the connection gear 23 and the connection gear 33 are configured to be rotatable in conjunction with each other. Links 21 and 31 are fixed to the connection gears 23 and 33, respectively. Therefore, these links 21, 31 and the auxiliary units 2, 3 also rotate together. The auxiliary unit 2 rotates counterclockwise around the center of the connecting shaft 24 from the initial state shown in FIG. 2A. On the other hand, the auxiliary unit 3 rotates clockwise about the center of the connecting shaft 34 from the initial state shown in FIG. 2A.

The auxiliary units 2 and 3 are configured to rotate while maintaining the same angle with the imaginary line L. As shown in FIG. In other words, the auxiliary units 2 and 3 are configured to rotate by the same angle from the initial state shown in FIG. 2A. For example, in the initial state, the angle between the center line of auxiliary unit 2 (link 21) and virtual line L and the angle between the center line of auxiliary unit 3 (link 31) and virtual line L are θ1. Assume that there is When the auxiliary unit 2 rotates downward from the initial state to the position shown in FIG. 2B and the angle between the center line of the auxiliary unit 2 and the virtual line L becomes θ2, The angle between is also θ2. The auxiliary units 2 and 3 are arranged in line-symmetrical positions with respect to the virtual line L at arbitrary positions where they are rotated in this way.

An irradiation section 11 is arranged on the virtual line L in the body section 10 of the irradiation unit 1 . The irradiating unit 11 is configured to be able to irradiate X-rays along the virtual line L toward the piping side arranged on the lower side. The X-rays emitted from the irradiation unit 11 travel downward while diffusing (see FIG. 1). As will be described in detail later, in the state of being installed on the outer peripheral surface of the pipe, the X-rays from the irradiation unit 11 are irradiated so that the center of the X-ray passes through the center of the pipe.

Next, a state in which the X-ray inspection apparatus 100 having the above configuration is installed on the outer peripheral surface of the pipe 200 to be inspected will be described with reference to FIGS. 3 and 4. FIG. 3 and 4 are explanatory diagrams of a state in which the X-ray inspection apparatus 100 according to this embodiment is installed on the outer peripheral surface of the pipe 200. FIG. FIG. 3 shows the case of installation in a pipe 200 (200A) with a relatively large diameter, and FIG. 4 shows the case of installation in a pipe 200 (200B) with a relatively small diameter.

3A and 4A show the X-ray inspection apparatus 100 installed in the pipe 200 from the front side. Moreover, in FIGS. 3A and 4A, as in FIG. 2, the configuration arranged on the front side of the grip portion 12 and the links 21 and 31 is omitted. 3B and 4B show the X-ray inspection apparatus 100 installed in the pipe 200 from above. Here, the case where the X-ray generation unit 101 is installed from above the pipe 200 will be described, but the installation position with respect to the pipe 200 is not limited to this, and can be installed at any position.

Also, in FIGS. 3A and 4A, the image receiving unit 102 is shown. Any installation method can be applied to the image receiving unit 102 on the premise that the image receiving surface 102a is arranged perpendicular to the virtual line L. FIG. For example, it can be installed on the outer peripheral surface of the pipe 200 by holding it together with the X-ray generation unit 101 with a holding belt 103 to be described later. It is preferable as an embodiment to add a structure to the X-ray generation unit 101 to support the arrangement of the image receiving surface 102a so as to be orthogonal to the imaginary line L. FIG.

As shown in FIGS. 3A and 4A, the X-ray generation unit 101 is installed on the outer peripheral surface of the pipe 200. As shown in FIG. The X-ray generating unit 101 brings the lower surface of the main body 10 of the irradiation unit 1 into contact with the outer peripheral surface of the pipe 200, and the outer peripheral portions of the housings 20 and 30 of the auxiliary units 2 and 3 into contact with the outer peripheral surface of the pipe 200. installed in the upright position. In this case, the body portion 10 and the housing portions 20 and 30 have a cylindrical shape. Therefore, the X-ray generation unit 101 is installed on the pipe 200 in a state of contact with the outer peripheral surface of the pipe 200 at three points.

The X-ray generation unit 101 installed in this manner is fixed to the pipe 200 by a holding belt 103 that constitutes an example of a holding member. The holding belt 103 is wound around the front and rear ends of the X-ray generation unit 101, as shown in FIGS. 3B and 4B. For example, the holding belt 103 is formed of an elongated body and fixed by hook-and-loop fasteners arranged at both ends thereof. The X-ray generation unit 101 is wound around the pipe 200 and fixed with a hook-and-loop fastener, so that the X-ray generation unit 101 is placed in close contact with the outer peripheral surface of the pipe 200 regardless of the dimensions of the pipe 200. can do.

When installing on the outer peripheral surface of the pipe 200A with a large diameter, first, the outer peripheral surface of the main body 10 of the irradiation unit 1 (more specifically, the outer peripheral surface arranged between the auxiliary units 2 and 3) is attached to the pipe. 200A. Then, the auxiliary units 2 and 3 are rotated toward the pipe 200A, and the casings 20 and 30 are brought into contact with the outer peripheral surface of the pipe 200A (state shown in FIG. 3A). In this case, the auxiliary units 2 and 3 rotate while maintaining the same angle with the virtual line L. The auxiliary units 2 and 3 are evenly opened with the virtual line L as a reference, and a part of the housing parts 20 and 30 contacts the outer peripheral surface of the pipe 200A. For this reason, the irradiation unit 1 is arranged in the center of the auxiliary units 2 and 3, and the irradiation unit 11 provided in the main unit 10 is on the virtual line L, and the X-ray beam is directed toward the center C2 of the pipe 200A. is installed in a position to irradiate

When X-rays are emitted from the irradiation unit 11 in this installed state, the X-rays are applied to the pipe 200A. The X-rays transmitted through the pipe 200A are received by the image receiving surface 102a of the image receiving unit 102. FIG. In this case, since the X-rays from the irradiation unit 11 are directed toward the center C2 of the pipe 200A, the X-ray image transmitted through the pipe 200A at a desired angle can be received by the image receiving unit 102. An X-ray image received by the image receiving unit 102 is output to a PC (not shown) according to an operator's instruction or initial setting. By displaying the X-ray image on the display of the PC, the operator can determine the state of the pipe 200A.

On the other hand, when installing on the outer peripheral surface of the pipe 200 with a small diameter, first, the outer peripheral surface of the main body 10 of the irradiation unit 1 (more specifically, the outer peripheral surface arranged between the auxiliary units 2 and 3). is placed on the pipe 200B. Then, the auxiliary units 2 and 3 are turned toward the pipe 200B, and the casings 20 and 30 are brought into contact with the outer peripheral surface of the pipe 200B (the state shown in FIG. 4A). Also in this case, the auxiliary units 2 and 3 rotate while maintaining the same angle with the virtual line L. Then, the auxiliary units 2 and 3 are evenly opened with the imaginary line L as a reference, and parts of the housings 20 and 30 come into contact with the outer peripheral surface of the pipe 200B. Therefore, the irradiation unit 1 is arranged in the center of the auxiliary units 2 and 3, and the irradiation unit 11 provided in the main body 10 is on the virtual line L, and the X-ray beam is directed toward the center C2 of the pipe 200B. is installed in a position to irradiate

When X-rays are emitted from the irradiation unit 11 in such an installed state, the X-rays are applied to the pipe 200B. The X-rays transmitted through the pipe 200B are received by the image receiving surface 102a of the image receiving unit 102. FIG. In this case, since the X-rays from the irradiation unit 11 are directed toward the center C2 of the pipe 200B, the X-ray image transmitted through the pipe 200B at a desired angle can be received by the image receiving unit 102. An X-ray image received by the image receiving unit 102 is output to a PC (not shown) according to an operator's instruction or initial setting. By displaying the X-ray image on the display of the PC, the operator can determine the state of the pipe 200B.

As described above, in the X-ray inspection apparatus 100 according to the present embodiment, the auxiliary units 2 and 3 arranged line-symmetrically with respect to the imaginary line L passing through the centers of the irradiation unit 1 and the pipe 200 are Since the pipe 200 rotates while maintaining the same angle with respect to the virtual line L, the auxiliary units 2 and 3 are arranged on the outer circumference of the pipe 200 with the irradiation unit 1 arranged in the center, regardless of the external dimensions of the pipe 200. can come into contact with the surface. On the other hand, an irradiation section 11 is formed on the imaginary line L in the irradiation unit 1 . Therefore, by bringing the pair of auxiliary units 2 and 3 into contact with the outer peripheral surface of the pipe 200 with the irradiation unit 1 arranged in the center, the irradiation unit is arranged so that the X-rays are irradiated toward the center C2 of the pipe 200. 1 can be placed. As a result, the condition of the pipe 200 can be properly inspected without requiring complicated installation work for the pipe 200 .

In particular, the auxiliary units 2 and 3 are centered on the rotation fulcrum (the center point of the connecting shafts 24 and 34) arranged on one end side connected to the irradiation unit 1, and the housing portion 20 arranged on the other end side. , 30 rotate toward the outer peripheral surface of the pipe 200 . As a result, the pair of auxiliary units 2 and 3 can be brought into contact with the outer peripheral surface of the pipe 200 with the irradiation unit 1 arranged in the center without requiring a complicated configuration.

In addition, the auxiliary units 2, 3 have a pair of connecting gears 23, 33 that are arranged around the pivot point and mesh with each other, and can rotate in conjunction with each other via these connecting gears 23, 33. is configured to Since the auxiliary units 2 and 3 are interlocked with each other via the connecting gears 23 and 33 in this manner, the pair of auxiliary units 2 and 3 can be reliably maintained at the same angle between the outer peripheral portions of the auxiliary units 2 and 3 and the imaginary line L. auxiliary units 2 and 3 can be rotated.

Further, the X-ray inspection apparatus 100 according to the present embodiment has an image receiving surface 102a that receives an image of the X-rays that have passed through the pipe 200. The image receiving surface 102a is arranged so as to be orthogonal to the virtual line L. An image receiving unit 102 is provided. As a result, the X-ray transmitted through the pipe 200 can be reliably received, so that the condition of the pipe 200 can be properly inspected.

Furthermore, the X-ray inspection apparatus 100 according to the present embodiment includes a holding belt 103 that holds the installation state of the irradiation unit 1 and the pair of auxiliary units 2 and 3 with respect to the pipe 200 . Since the installation state of the irradiation unit 1 and the auxiliary units 2 and 3 with respect to the pipe 200 is maintained by such a holding belt 103, it is possible to prevent the irradiation unit 1 from shifting during the inspection process. can be inspected.

Furthermore, in the X-ray inspection apparatus 100 according to the present embodiment, the battery (driving power source) of the irradiation unit 1 is accommodated in the auxiliary unit 2 (more specifically, the housing 20), while the auxiliary unit 3 ( More specifically, the control device of the irradiation unit 1 is accommodated in the housing section 30). Since the battery and control device of the irradiation unit 1 are accommodated in the auxiliary units 2 and 3, respectively, the number of constituent parts of the irradiation unit 1 can be reduced, so that the irradiation unit 1 itself can be made compact. . In the above embodiment, the auxiliary units 2 and 3 respectively accommodate the battery and the control device of the irradiation unit 1, but the objects to be accommodated in the auxiliary units 2 and 3 are not limited to this. Any configuration can be accommodated for the purpose of miniaturizing the irradiation unit 1 .

It should be noted that the present invention is not limited to the above embodiments, and can be implemented with various modifications. In the above embodiment, the size, shape, function, and the like of the constituent elements illustrated in the accompanying drawings are not limited to these, and can be changed as appropriate within the scope of exhibiting the effects of the present invention. In addition, it is possible to carry out by appropriately modifying the present invention as long as it does not deviate from the scope of the purpose of the present invention.

For example, in the above embodiment, the case where the cross section of the pipe 200 to be inspected has a cylindrical shape is described. However, the object to be inspected by X-ray inspection apparatus 100 according to the present embodiment is not limited to pipe 200 having a cylindrical shape. It is possible to inspect the condition of a pipe having an arbitrary cross-sectional shape as an inspection target.

Further, in the above-described embodiment, the auxiliary units 2 and 3 are configured to be rotatable in conjunction with each other by meshing the connection gears 23 and 33 . However, on the premise that the auxiliary units 2 and 3 maintain the same angle with the imaginary line L, any configuration can be applied to the rotating mechanism of the auxiliary units 2 and 3 .

Furthermore, in the above embodiment, the case where the auxiliary units 2 and 3 are manually rotated has been described. However, the rotation of the auxiliary units 2 and 3 is not limited to manual operation, and an electric drive mechanism may be applied.

The X-ray inspection apparatus of the present invention has the effect of being able to appropriately inspect the condition of pipes without requiring complicated installation work for the pipes, and is suitable for inspecting various types of pipes buried underground. preferred.

1: X-ray irradiation unit (irradiation unit)
2, 3: Installation auxiliary unit (auxiliary unit)
Reference Signs List 10: main body portions 10a and 10b: cover 11: irradiation portion 12: grip portion 20: housing portions 21 and 22: link 23: connection gear 24: connection shaft 30: housing portions 31 and 32: link 33: connection gear 34 : Connecting shaft 100 : X-ray inspection device 101 : X-ray irradiation unit 102 : X-ray image receiving unit (image receiving unit)
102a: image receiving surface 103: holding belts 200, 200A, 200B: piping

Claims (5)

An X-ray inspection device that is installed on the outer peripheral surface of a pipe to be inspected and irradiates the pipe with X-rays to inspect the state of the pipe,
an X-ray irradiation unit that irradiates the pipe with X-rays;
a pair of installation assistance units rotatably connected to the X-ray irradiation unit and having a cylindrical casing ;
The X-ray irradiation unit is formed with an irradiation section that irradiates X-rays toward the pipe on a virtual line passing through the center of the X-ray irradiation unit and the center of the pipe,
The pair of installation assistance units are arranged line-symmetrically with respect to the virtual line , and have a rotation fulcrum on one end side connected to the X-ray irradiation unit, and the rotation fulcrum of each of the installation assistance units. It has a pair of connecting gears arranged in the center and meshing with each other, and each of the installation auxiliary units is aligned with the imaginary line with the outer peripheral portion on the other end side facing the outer peripheral surface of the pipe around the rotation fulcrum. The pair of installation assistance units are rotated while maintaining the same angle by interlocking between them via the pair of connection gears , and the pair of installation assistance units are placed in a state in which the X-ray irradiation unit is arranged in the center of the installation assistance units. An X-ray inspection device that is brought into contact with the outer peripheral surface of the pipe. The installation assistance unit has two housings, and the pair of installation assistance units is rotatable so that the two housings are brought closer to each other from an initial state. Item 1. The X-ray inspection apparatus according to item 1. 2. An X-ray image receiving unit having an image receiving surface for receiving an image of the X-ray transmitted through the pipe, the image receiving unit being arranged so that the image receiving surface is perpendicular to the virtual line. Or the X-ray inspection apparatus according to claim 2 . 4. The X-ray inspection apparatus according to any one of claims 1 to 3 , further comprising a holding member for holding an installation state of said X-ray irradiation unit and said pair of installation auxiliary units with respect to said pipe. 5. The X-ray inspection apparatus according to any one of claims 1 to 4 , wherein the installation auxiliary unit accommodates a drive power source for the X-ray irradiation unit and/or a control device for the X-ray irradiation unit. .

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