Pipeline detection device

Abstract

The utility model relates to the field of nondestructive testing, and discloses a pipeline detection device, which comprises a mounting ring, a shielding assembly and a supporting assembly, and is characterized in that the mounting ring is used for sleeving a to-be-detected pipeline; the shielding assembly is mounted on the mounting ring and is used for fixing the radioactive source, and the shielding assembly is further used for allowing rays emitted by the radioactive source to be emitted in the transillumination direction and inhibiting the rays emitted by the radioactive source from being emitted in the non-transillumination direction; the transillumination direction is the direction from the shielding assembly to the cassette; the support assembly is mounted on the mounting ring, and the support assembly is configured to mount the cassette. Therefore, the rays emitted by the radioactive source can be conveniently utilized to carry out nondestructive detection on the pipeline, the environmental dose of a radioactive source detection place is reduced, the radiation risk of radioactive source detection is reduced, the isolation boundary range of radioactive source detection is narrowed, and the radioactive source detection cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of nondestructive testing, and in particular to a pipeline testing device. Background Art

[0002] Radiographic inspection methods are widely used in the field of nondestructive testing due to their intuitive inspection and accurate defect location. The inspection site environment of conventional islands in power plants or other chemical plants is complex and the inspection space is limited, which limits the applicable nondestructive testing technologies.

[0003] Although the commonly used gamma source detection is fast and convenient, the energy of gamma source rays is usually strong, and the gamma source rays are emitted in all directions. For conventional islands with empty space and lack of effective shielding structures, the radiation risk of flaw detectors increases. In order to meet the requirements of the isolation boundary of radiographic flaw detection, the isolation boundary of conventional islands is usually large, and even affects the work of other factories. Moreover, the commonly used shielding method for conventional island radiographic flaw detection is to manually build fixed shielding, which is time-consuming and labor-intensive, and the location is fixed. For mobile flaw detection in multiple locations in one night, this method is costly. Summary of the invention

[0004] Based on this, the present application provides a pipeline detection device to reduce the environmental dose at the radiation source detection site, reduce the radiation risk of radiation source detection, and reduce the cost of radiation source detection.

[0005] An embodiment of the present application provides a pipeline detection device, including a mounting ring, a shielding assembly and a support assembly, wherein the mounting ring is used to be sleeved on the pipeline to be detected; the shielding assembly is mounted on the mounting ring, the shielding assembly is used to fix a radiation source, and the shielding assembly is also used to allow the radiation emitted by the radiation source to be emitted along a transillumination direction and to suppress the radiation emitted by the radiation source from being emitted along a non-transillumination direction; the transillumination direction is the direction in which the shielding assembly points to a dark box; the support assembly is mounted on the mounting ring, and the support assembly is configured to install the dark box.

[0006] In one embodiment, the shielding assembly includes a first shielding component and a fixing component; a shielding room is provided inside the first shielding component, the shielding room is used to accommodate the radiation source, and a transillumination hole connected to the shielding room is opened on the side of the first shielding component facing the supporting component; the fixing component is used to install the first shielding component on the mounting ring.

[0007] In one of the embodiments, along the transillumination direction, the cross-sectional area of ​​the transillumination hole gradually increases.

[0008] In one of the embodiments, the support assembly includes a support seat and a support plate, the support seat is mounted on the mounting ring, the support plate is mounted on a side of the support seat facing the shielding assembly, and the support plate is used to fix the dark box.

[0009] In one of the embodiments, the support base has two slide rails on one side close to the shielding assembly, the two slide rails are arranged opposite to each other, and the support plate is slidably fitted between the two slide rails.

[0010] In one of the embodiments, a accommodating cavity is provided inside the support base, and the accommodating cavity is used to accommodate a second shielding member to shield the rays emitted by the radiation source along the irradiation direction; an opening is provided on the side of the support base away from the mounting ring, and the opening is connected to the accommodating cavity.

[0011] In one of the embodiments, it also includes a rotating component and a positioning component; the rotating component is rotatably mounted on the mounting ring, the shielding component is mounted on the rotating component, the supporting component is mounted on the rotating component, and the shielding component and the supporting component are arranged opposite to each other; the positioning component is used to fix the rotating component on the mounting ring.

[0012] In one of the embodiments, the rotating assembly includes a rotating part and a sliding part; an annular groove is provided on the mounting ring, and the sliding part slides in the annular groove; the rotating part is connected to the sliding part; the shielding assembly and the shielding assembly are both installed on the rotating part.

[0013] In one embodiment, the positioning assembly includes a positioning member, a first positioning hole cooperating with the positioning member is opened on the rotating member, and a plurality of second positioning holes are arranged on the mounting ring and spaced apart along the circumferential direction of the mounting ring, and the positioning member cooperates with the first positioning hole and the second positioning hole to fix the rotating assembly on the mounting ring.

[0014] In one embodiment, the mounting ring includes two semicircular rings, and the two semicircular rings are connected together by a connecting assembly.

[0015] The above pipeline detection device is configured so that the mounting ring is configured to be sleeved on the pipeline to be detected, the shielding component is installed on the mounting ring, the shielding component is used to fix the radiation source, and the shielding component is also used to allow the radiation emitted by the radiation source to be emitted along the transillumination direction; the support component is installed on the mounting ring, and the support component is used to install the dark box; thus, the radiation emitted by the radiation source can be conveniently used to perform non-destructive detection on the pipeline. By using the shielding component to suppress the radiation emitted by the radiation source from being emitted along the non-transillumination direction, the shielding component can shield the radiation emitted by the radiation source along the non-transillumination direction, thereby reducing the environmental dose of the radiation source detection site and reducing the radiation risk of the radiation source detection. In addition, the isolation boundary range of the radiation source detection can also be reduced, which can help reduce the cost of radiation source detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG. 1 is a schematic structural diagram of a pipeline detection device in an embodiment of the present application.

[0017] FIG. 2 is a schematic structural diagram of a first shielding member of a pipeline detection device in an embodiment of the present application.

[0018] FIG. 3 is a front view schematic diagram of the first shielding component of the pipeline detection device in one embodiment of the present application.

[0019] FIG. 4 is a schematic diagram of a top view of the rotating assembly of a pipeline detection device in an embodiment of the present application.

[0020] FIG. 5 is a schematic side view of the structure of a rotating assembly of a pipeline detection device in an embodiment of the present application.

[0021] FIG. 6 is a schematic diagram of a top view of the support assembly of a pipeline detection device in an embodiment of the present application.

[0022] Description of reference numerals:

[0023] 10. Pipeline detection device; 20. Dark box;

[0024] 110, mounting ring; 110a, first joint; 111, semicircular ring; 112, annular slide groove; 113, second positioning hole; 120, shielding assembly; 121, first shielding member; 1211, shielding chamber; 1212, transillumination hole; 1213, opening; 122, fixing member; 130, supporting assembly; 131, supporting seat; 1311, accommodating chamber; 1312, opening; 132, supporting plate; 133, slide rail; 134, second shielding member; 140, rotating assembly; 141, rotating member; 1411, first positioning hole; 142, sliding member; 150, connecting assembly; 151, first connecting block; 152, second connecting block; 153, connecting arm. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0027] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0029] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0031] FIG1 shows a schematic structural diagram of a pipeline detection device in an embodiment of the present application.

[0032] Referring to FIG. 1 , an embodiment of the present application provides a pipeline detection device 10, including a mounting ring 110, a shielding assembly 120 and a support assembly 130. The mounting ring 110 is used to be sleeved on a pipeline to be detected (not shown); the shielding assembly 120 is mounted on the mounting ring 110, and the shielding assembly 120 is used to fix the radiation source. The shielding assembly 120 is also used to allow the radiation emitted by the radiation source to be emitted along the transillumination direction, and to suppress the radiation emitted by the radiation source from being emitted along the non-transillumination direction; the transillumination direction is the direction in which the shielding assembly 120 points to the dark box 20; the support assembly 130 is mounted on the mounting ring 110, and the support assembly 130 is configured to install the dark box 20.

[0033] It should be noted that the radiation source may be a gamma radiation source. The dark box 20 utilizes the penetrating properties of the radiation emitted by the radiation source. The object will generate systemic and scattering effects on the radiation. The area with stronger absorption will appear as a dark shadow in the dark box 20, while the area with stronger scattering will appear as a bright spot, thereby obtaining the internal information of the object. In the embodiment of the present application, the dark box 20 can be used to obtain the internal information of the structure such as the weld of the pipeline to be inspected, thereby realizing non-destructive inspection of the pipeline to be inspected.

[0034] The pipeline detection device 10 provided in the embodiment of the present application is configured to be sleeved on the pipeline to be detected by making the mounting ring 110 configured to be sleeved on the pipeline to be detected, and the shielding component 120 is installed on the mounting ring 110. The shielding component 120 is used to fix the radiation source, and the shielding component 120 is also used to allow the radiation emitted by the radiation source to be emitted along the transillumination direction; the support component 130 is installed on the mounting ring 110, and the support component 130 is used to install the dark box 20; thus, the radiation emitted by the radiation source can be conveniently used to perform non-destructive detection on the pipeline. By making the shielding component 120 used to suppress the radiation emitted by the radiation source from being emitted along the non-transillumination direction, the shielding component 120 can shield the radiation emitted by the radiation source along the non-transillumination direction, thereby reducing the environmental dose of the radiation source detection site and reducing the radiation risk of the radiation source detection; in addition, the isolation boundary range of the radiation source detection can also be reduced, which can help reduce the cost of radiation source detection.

[0035] As shown in Figures 1 and 2, in one embodiment, the shielding assembly 120 includes a first shielding member 121 and a fixing member 122; a shielding chamber 1211 is provided inside the first shielding member 121, and the shielding chamber 1211 is used to accommodate a radiation source. A transillumination hole 1212 connected to the shielding chamber 1211 is opened on the side of the first shielding member 121 facing the supporting assembly 130; the fixing member 122 is used to install the first shielding member 121 on the mounting ring 110.

[0036] Thus, by providing a shielding chamber 1211 for accommodating a radiation source in the first shielding member 121, and opening a transillumination hole 1212 connected to the shielding chamber 1211 on the side of the first shielding member 121 facing the support assembly 130, the radiation emitted by the radiation source can be emitted along the transillumination hole 1212 on the first shielding member 121, so as to detect the pipeline to be detected, and the radiation emitted by the radiation source cannot be emitted from other positions of the first shielding member 121, so as to shield the radiation emitted by the radiation source, thereby reducing the environmental dose of the radiation source detection site, reducing the radiation risk of the radiation source detection, and reducing the isolation boundary range of the radiation source detection, which can help reduce the cost of the radiation source detection. In addition, the first shielding member 121 is installed on the mounting ring 110 through the fixing member 122, so that the fixed installation of the shielding assembly 120 can be facilitated.

[0037] As shown in FIG. 1 , in a specific example, there may be a plurality of fixing members 122 , and the fixing members 122 may be columnar structures.

[0038] As shown in FIG. 1 and FIG. 2 , in one embodiment, the first shielding member 121 is further provided with an opening 1213 communicating with the shielding chamber 1211 , and the shielding assembly 120 further includes a third shielding member (not shown) disposed in the opening 1213 .

[0039] Thus, the radiation source can be placed and removed conveniently through the opening 1213; when testing, the third shielding member is disposed in the opening 1213, so that the opening 1213 can be blocked and shielded, ensuring the shielding effect of the first shielding member 121 on the rays in the non-irradiation direction.

[0040] In one embodiment, the first shielding member 121 and the third shielding member can be made of tungsten alloy material.

[0041] As shown in FIG. 3 , in one embodiment, along the transillumination direction, the cross-sectional area of ​​the transillumination hole 1212 gradually increases.

[0042] Thus, the radiation emitted by the radiation source can be emitted divergently from the transillumination hole 1212 to ensure the transillumination area of ​​the radiation emitted by the radiation source, thereby improving the accuracy of detection and the quality of detection.

[0043] As shown in FIG. 3 , in a specific example, the cross-sectional shape of the transillumination hole 1212 may be conical, trapezoidal, or the like.

[0044] As shown in Figures 1 and 6, in one embodiment, the support assembly 130 includes a support seat 131 and a support plate 132. The support seat 131 is installed on the mounting ring 110, and the support plate 132 is installed on the side of the support seat 131 facing the shielding assembly 120. The support plate 132 is used to fix the dark box 20.

[0045] Thus, the dark box 20 is installed on the mounting ring 110 through the support seat 131 and the support plate 132 so as to detect the pipeline to be inspected.

[0046] As shown in FIG. 6 , in one embodiment, the support base 131 has two slide rails 133 on one side close to the shielding assembly 120 . The two slide rails 133 are disposed opposite to each other, and the support plate 132 is slidably fitted between the two slide rails 133 .

[0047] Thus, the support plate 132 can be detachably mounted on the support seat 131 , thereby facilitating the disassembly and assembly of the dark box 20 and improving the replacement efficiency of the dark box 20 .

[0048] As shown in Figures 1 and 6, in one embodiment, a accommodating cavity 1311 is provided inside the support base 131, and the accommodating cavity 1311 is used to accommodate the second shielding member 134 to shield the rays emitted by the radiation source along the irradiation direction; an opening 1312 is provided on the side of the support base 131 away from the mounting ring 110, and the opening 1312 is connected to the accommodating cavity 1311.

[0049] Therefore, by providing a accommodating cavity 1311 inside the support base 131, the accommodating cavity 1311 is used to accommodate the second shielding component 134, so that the second shielding component 134 can shield the rays emitted by the radiation source along the irradiation direction, which can greatly reduce the environmental dose of the radiation source detection site and reduce the radiation risk of radiation source detection.

[0050] As shown in Figures 1, 4 and 5, in one embodiment, it also includes a rotating component 140 and a positioning component (not shown); the rotating component 140 is rotatably mounted on the mounting ring 110, the shielding component 120 is mounted on the rotating component 140, and the supporting component 130 is mounted on the rotating component 140, and the shielding component 120 and the supporting component 130 are arranged opposite to each other; the positioning component is used to fix the rotating component 140 on the mounting ring 110.

[0051] Thus, the rotating assembly 140 can drive the shielding assembly 120 and the supporting assembly 130 to rotate synchronously around the pipeline to be inspected, thereby ensuring the relative position of the shielding assembly 120 and the supporting assembly 130, avoiding the occurrence of problems such as inaccurate detection and waste films caused by the relative position offset between the radiation source and the dark box 20, and improving the detection quality. The rotating assembly 140 can be fixed to different positions of the pipeline to be inspected through the positioning assembly, thereby facilitating multi-directional detection of the pipeline to be inspected, improving detection accuracy, and improving detection quality.

[0052] As shown in Figures 1, 4 and 5, in one embodiment, the rotating component 140 includes a rotating member 141 and a sliding member 142; an annular groove 112 is opened on the mounting ring 110, and the sliding member 142 slides in the annular groove 112; the rotating member 141 is connected to the sliding member 142; the shielding component 120 and the shielding component 120 are both installed on the rotating member 141.

[0053] Therefore, the rotating member 141 can be conveniently rotatably installed on the installation ring 110 through the sliding member 142 and the annular sliding groove 112 .

[0054] As shown in FIG. 4 and FIG. 5 , in a specific example, the sliding member 142 may be a pulley, and the rotating member 141 may be an arc-shaped plate, the central axis of the arc-shaped plate coincides with the central axis of the pipeline to be inspected, so that the rotating member 141 rotates around the pipeline to be inspected.

[0055] As shown in Figures 1 and 4, in one embodiment, the positioning assembly includes a positioning member (not shown), a first positioning hole 1411 that cooperates with the positioning member is opened on the rotating member 141, and a plurality of second positioning holes 113 are arranged on the mounting ring 110 and spaced apart along the circumferential direction of the mounting ring 110. The positioning member cooperates with the first positioning hole 1411 and the second positioning hole 113 to fix the rotating assembly 140 on the mounting ring 110.

[0056] Therefore, when performing inspection, by passing the positioning member through the first positioning hole 1411 and cooperating with different second positioning holes 113, the rotating member 141 can be fixed at different positions of the pipeline to be inspected, thereby realizing inspection of different positions of the pipeline to be inspected, improving inspection efficiency and accuracy, and improving inspection quality.

[0057] In a specific example, the positioning member may be a positioning pin.

[0058] As shown in FIG. 1 , in one embodiment, the mounting ring 110 includes two semicircular rings 111 , and the two semicircular rings 111 are connected together by a connecting assembly 150 .

[0059] This makes it easier to disassemble and assemble the entire device, reduces the time required to disassemble and assemble the device, shortens the operation time, and improves inspection efficiency.

[0060] As shown in FIG. 1 , in one embodiment, a first joint 110 a and a second joint (not shown) are provided between two semicircular rings 111 ; the connecting assembly 150 includes a first connecting block 151 , a second connecting block 152 , a connecting arm 153 , a third connecting block (not shown) and a fourth connecting block (not shown); the first connecting block 151 and the second connecting block 152 are distributed on both sides of the first joint 110 a , the first connecting block 151 and the second connecting block 152 are respectively connected to the two semicircular rings 111 , one end of the connecting arm 153 is hinged to one of the first connecting block 151 and the second connecting block 152 , and the other end of the connecting arm 153 is snapped to the other of the first connecting block 151 and the second connecting block 152 ; the third connecting block and the fourth connecting block are distributed on both sides of the second joint, the third connecting block and the fourth connecting block are respectively connected to the two semicircular rings; the third connecting block and the fourth connecting block are hinged to each other.

[0061] Thus, the two semicircular rings 111 of the mounting ring 110 can be conveniently locked and opened, so that the entire device can be conveniently fixed on or removed from the pipeline, reducing the time for disassembling and assembling the device, shortening the operation time, and improving the inspection efficiency.

[0062] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A pipeline detection device, characterized in that: include: A mounting ring, used for being mounted on the pipe to be inspected; A shielding assembly, the shielding assembly is mounted on the mounting ring, the shielding assembly is used to fix the radiation source, and the shielding assembly is also used to allow the radiation emitted by the radiation source to be emitted along the transillumination direction and to inhibit the radiation emitted by the radiation source from being emitted along the non-transillumination direction; the transillumination direction is the direction in which the shielding assembly points to the dark box; A support assembly is mounted on the mounting ring, and the support assembly is configured to mount the dark box.

2. The pipeline detection device according to claim 1, characterized in that: The shielding assembly includes a first shielding component and a fixing component; a shielding room is provided inside the first shielding component, the shielding room is used to accommodate the radiation source, and a transillumination hole connected to the shielding room is opened on the side of the first shielding component facing the supporting component; the fixing component is used to install the first shielding component on the mounting ring.

3. The pipeline detection device according to claim 2, characterized in that: Along the transillumination direction, the cross-sectional area of ​​the transillumination hole gradually increases.

4. The pipeline detection device according to claim 1, characterized in that: The support assembly includes a support seat and a support plate. The support seat is installed on the mounting ring. The support plate is installed on a side of the support seat facing the shielding assembly. The support plate is used to fix the dark box.

5. The pipeline detection device according to claim 4, characterized in that: The support base has two slide rails on one side close to the shielding assembly. The two slide rails are arranged opposite to each other, and the support plate is slidably matched between the two slide rails.

6. The pipeline detection device according to claim 4, characterized in that: The support base is provided with a housing cavity inside, and the housing cavity is used to accommodate a second shielding member to shield the radiation emitted by the radiation source along the irradiation direction; the support base is provided with an opening on a side away from the mounting ring, and the opening is connected to the housing cavity.

7. The pipeline detection device according to claim 1, characterized in that: It also includes a rotating component and a positioning component; the rotating component is rotatably mounted on the mounting ring, the shielding component is mounted on the rotating component, the supporting component is mounted on the rotating component, and the shielding component and the supporting component are arranged opposite to each other; the positioning component is used to fix the rotating component on the mounting ring.

8. The pipeline detection device according to claim 7, characterized in that: The rotating component includes a rotating part and a sliding part; the mounting ring is provided with an annular groove, and the sliding part is slidably fitted in the annular groove; the rotating part is connected to the sliding part; the shielding component and the shielding component are both installed on the rotating part.

9. The pipeline detection device according to claim 8, characterized in that: The positioning assembly includes a positioning member, a first positioning hole cooperating with the positioning member is opened on the rotating member, and a plurality of second positioning holes are arranged on the mounting ring and spaced apart along the circumferential direction of the mounting ring. The positioning member cooperates with the first positioning hole and the second positioning hole to fix the rotating assembly on the mounting ring.

10. The pipeline detection device according to claim 1, characterized in that: The mounting ring comprises two semicircular rings, and the two semicircular rings are connected together through a connecting assembly.

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