Radiographic inspection auxiliary device for high-temperature small-diameter pipeline

Abstract

The utility model belongs to the technical field of nuclear power nondestructive testing, and discloses a high-temperature small-diameter pipeline radiographic inspection auxiliary device which comprises a clamping structure, a fixing structure and a connecting structure. The clamping structure comprises a clamping assembly and an adjusting assembly, the clamping assembly is clamped on the to-be-detected pipeline, and the adjusting assembly is arranged on the clamping assembly in a penetrating mode in a position-adjustable mode and abuts against the outer wall of the to-be-detected pipeline, so that the device can be suitable for detection of pipelines with different pipe diameters, and the applicability of the device is improved; the fixing structure for penetrating the source guide pipe and the to-be-detected pipeline are arranged at an interval, so that the condition that the source guide pipe is heated and stuck due to high temperature of the to-be-detected pipeline can be avoided, and smooth radiographic detection is ensured; the connecting structure is connected between the clamping assembly and the fixing structure, and the distance between the clamping assembly and the fixing structure can be adjusted, so that a proper exposure distance is adjusted according to the pipe diameter of the to-be-detected pipeline, and the imaging quality of ray detection is ensured. The device is made of convenient, simple and easy-to-obtain materials, and the maintenance cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear power nondestructive testing, in particular to a high-temperature small-diameter pipeline ray detection auxiliary device. Background Art

[0002] According to the welding specifications for conventional island pipeline installation in nuclear power plants, surface inspection is usually required after the installation and welding of small-diameter pipes in the conventional island during the construction phase to detect defects inside the weld to ensure the normal operation of the unit. Radiographic flaw detection of small-diameter pipes is generally carried out on normal temperature pipes, such as after the pipe welding is completed and during the unit shutdown phase. However, there are as many as hundreds of small-diameter pipes that need to be inspected in the unit, and the unit shutdown time is limited, so radiographic inspection of small-diameter pipes is still required during the operation of the unit.

[0003] During operation, the pipelines of the unit are in a high temperature state. Direct inspection may easily cause the source pipe to deform due to heat and become stuck, and may also cause burns to the operators. The inspection auxiliary device disclosed in the prior art fixes the radiation source in the shuttle part by setting a clamping part on the pipeline to be tested. At the same time, a support rod is connected between the shuttle part and the clamping part to provide stable support for the radiation source to form a fixed focal length and ensure the imaging quality. However, the auxiliary device can only be used for pipeline inspection with a diameter that matches the clamping part, and has poor versatility, resulting in increased inspection costs. Utility Model Content

[0004] The purpose of the utility model is to provide a high-temperature small-diameter pipeline radiation detection auxiliary device, which can perform radiation detection on high-temperature small-diameter pipelines with high safety; at the same time, it can be applied to the detection of small-diameter pipelines with different diameters, has high applicability, and can reduce the detection cost.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Provided is a high-temperature small-diameter pipeline ray detection auxiliary device, comprising:

[0007] The clamping structure comprises a clamping assembly and an adjusting assembly, wherein the clamping assembly is clamped on the pipeline to be tested, and the adjusting assembly is adjustable in position and penetrates through the clamping assembly and is pressed against the outer wall of the pipeline to be tested;

[0008] A fixed structure is spaced apart from the pipeline to be tested and is used to penetrate the source guide pipe;

[0009] The connecting structure is connected between the clamping assembly and the fixing structure, and can adjust the distance between the clamping assembly and the fixing structure.

[0010] As an optional solution of the auxiliary device for radiographic detection of high-temperature small-diameter pipelines, the clamping assembly includes a first clamping member and a second clamping member respectively arranged on both sides of the pipeline to be detected, the first end of the first clamping member is rotatably connected to the first end of the second clamping member, and the second end of the first clamping member is detachably connected to the second end of the second clamping member;

[0011] The adjusting assembly is arranged on the first clamping member and / or the second clamping member.

[0012] As an optional solution for the auxiliary device for high-temperature small-diameter pipeline X-ray detection, the adjustment component includes a plurality of adjustment parts, and the plurality of adjustment parts are arranged at intervals on the first clamping part and / or the second clamping part, and each of the adjustment parts can be pressed against the outer wall of the pipeline to be detected.

[0013] As an optional solution of the auxiliary device for high-temperature small-diameter pipeline radiation detection, a heat insulating member is provided on the side of the first clamping member and / or the second clamping member and / or the adjusting member facing the pipeline to be detected.

[0014] As an optional solution for the auxiliary device for high-temperature small-diameter pipeline radiographic detection, the clamping assembly further includes a locking member;

[0015] A first locking hole is formed at the second end of the first clamping member, a second locking hole is formed at the second end of the second clamping member, and the locking member passes through the first locking hole and the second locking hole.

[0016] As an optional solution for the auxiliary device for high-temperature small-diameter pipeline radiographic inspection, the fixed structure includes a guide tube and a stopper;

[0017] The guide tube extends along the length direction of the pipeline to be measured and is connected to the connection structure; the limiter is arranged on the side wall of the guide tube and is adjustable in position along the radial direction of the guide tube so as to be pressed against the source guide tube.

[0018] As an optional solution of the high-temperature small-diameter pipeline ray detection auxiliary device, the connection structure includes a first connection pipe and a second connection pipe, and the second connection pipe is adjustably arranged on the first connection pipe;

[0019] One end of the first connecting tube away from the second connecting tube is fixed on the clamping assembly, and one end of the second connecting tube away from the first connecting tube is connected to the fixing structure.

[0020] As an optional solution for the auxiliary device for high-temperature small-diameter pipeline ray detection, the connection structure also includes a plurality of connecting pieces;

[0021] The plurality of connecting members are spaced apart along the length direction of the first connecting tube, and each of the connecting members penetrates through the side wall of the first connecting tube and abuts against the second connecting tube.

[0022] As an optional solution for the high-temperature small-diameter pipeline X-ray detection auxiliary device, the first connecting pipe is provided with an internal thread on the inner wall, and the second connecting pipe is provided with an external thread on the outer wall, and the first connecting pipe and the second connecting pipe are threadedly matched.

[0023] As an optional solution for the auxiliary device for high-temperature small-diameter pipeline radiation detection, the second connecting pipe is provided with a scale.

[0024] Beneficial effects of the utility model:

[0025] The utility model provides a high-temperature small-diameter pipeline X-ray detection auxiliary device, including a clamping structure, a fixed structure and a connecting structure. Among them, the clamping structure includes a clamping component and an adjusting component. The clamping component is clamped on the pipeline to be tested, and the adjusting component is adjustable in position and inserted into the clamping component, and is pressed against the outer wall of the pipeline to be tested to clamp the outer wall of the pipeline to be tested, so that the device can be applied to pipeline detection of different diameters, improve its applicability, and reduce maintenance costs; the fixed structure for inserting the source guide tube is arranged at intervals with the pipeline to be tested, and while fixing the source guide tube, it can also avoid the source guide tube from being heated and stuck due to the high temperature of the pipeline to be tested, so as to ensure the smooth progress of X-ray detection and ensure the detection efficiency; the connecting structure is connected between the clamping component and the fixed structure, and the distance between the clamping component and the fixed structure can be adjusted to adjust the appropriate exposure distance according to the diameter of the pipeline to be tested, so as to ensure the imaging quality of X-ray detection. In addition, the device is easy to obtain materials, and the manufacturing materials are simple and easy to obtain, which can reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an overall schematic diagram of a high-temperature small-diameter pipeline ray detection auxiliary device provided by a specific implementation method of the utility model;

[0027] Figure 2 It is an exploded view of the connection structure provided by a specific implementation method of the utility model.

[0028] In the figure:

[0029] 1. Clamping structure;

[0030] 11. Clamping assembly; 111. First clamping member; 112. Second clamping member; 113. Locking member;

[0031] 12. Adjustment components; 13. Thermal insulation components;

[0032] 2. Fixed structure; 21. Guide tube; 22. Limiting member;

[0033] 3. Connection structure; 31. First connection pipe; 32. Second connection pipe; 33. Connection piece. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0039] like Figure 1 and Figure 2As shown, this embodiment provides a high-temperature small-diameter pipeline ray detection auxiliary device, including a clamping structure 1, a fixed structure 2 and a connecting structure 3. Among them, the clamping structure 1 includes a clamping component 11 and an adjusting component 12. The clamping component 11 is clamped on the pipeline to be tested. The adjusting component 12 is adjustable and penetrated on the clamping component 11, and is pressed against the outer wall of the pipeline to be tested to clamp the outer wall of the pipeline to be tested, so that the device can be applied to pipeline detection of different pipe diameters, improve its applicability, and reduce maintenance costs; the fixed structure 2 for penetrating the source guide pipe is arranged at intervals with the pipeline to be tested, and while fixing the source guide pipe, it can also avoid the source guide pipe being heated and stuck due to the high temperature of the pipeline to be tested, so as to ensure the smooth progress of the ray detection and the detection efficiency; the connecting structure 3 is connected between the clamping component 11 and the fixed structure 2, and the distance between the clamping component 11 and the fixed structure 2 can be adjusted to adjust the appropriate exposure distance according to the diameter of the pipeline to be tested, so as to ensure the imaging quality of the ray detection. In addition, the materials used to make the device are convenient, simple and easy to obtain, which can reduce maintenance costs.

[0040] Optionally, refer to Figure 1 The clamping assembly 11 includes a first clamping member 111 and a second clamping member 112 respectively arranged on both sides of the pipeline to be tested. The first end of the first clamping member 111 is rotatably connected to the first end of the second clamping member 112, and the second end of the first clamping member 111 is detachably connected to the second end of the second clamping member 112. The adjusting assembly 12 is arranged on the first clamping member 111 and / or the second clamping member 112.

[0041] Specifically, in this embodiment, the first end of the first clamping member 111 and the first end of the second clamping member 112 are rotatably connected by providing a rotating shaft.

[0042] Optionally, the clamping assembly 11 further includes a locking member 113. A first locking hole is provided at the second end of the first clamping member 111, and a second locking hole is provided at the second end of the second clamping member 112. The locking member 113 is inserted through the first locking hole and the second locking hole to achieve a detachable connection between the first clamping member 111 and the second clamping member 112. The material is convenient to obtain, and the operation is simple and convenient, which can improve the efficiency of maintenance work. In addition, a screwing portion is provided on the locking member 113 to facilitate the operation of maintenance personnel.

[0043] Specifically, in this embodiment, one of the first locking hole and the second locking hole is a through hole, and the other is a threaded hole, and the locking member 113 is a bolt or a screw commonly used in the art.

[0044] Alternatively, in other embodiments, a clamping portion is disposed on one of the first clamping member 111 and the second clamping member 112 , and a clamping groove is disposed on the other, and the two are detachably connected by clamping.

[0045] Specifically, in this embodiment, the first clamping member 111 and the second clamping member 112 are both semi-arc-shaped to fit the outer wall of the pipe to be tested and improve the stability of clamping.

[0046] Illustratively, in this embodiment, the adjustment component 12 is disposed on the second clamping member 112 ; in other embodiments, the adjustment component 12 may also be disposed on the first clamping member 111 , or the adjustment component 12 may be disposed on both the first clamping member 111 and the second clamping member 112 .

[0047] Furthermore, the adjustment assembly 12 includes a plurality of adjustment members, which are spaced apart on the first clamping member 111 and / or the second clamping member 112. Each adjustment member can be pressed against the outer wall of the pipeline to be tested, so that the device is suitable for X-ray detection of pipelines with different pipe diameters and has good applicability.

[0048] Specifically, in this embodiment, there are two adjusting members, which are spaced apart and arranged on the second clamping member 112 ; in other embodiments, the number of adjusting members can be set as needed and is not specifically limited here.

[0049] Alternatively, if Figure 1 As shown, the adjusting member includes an adjusting portion and an abutting portion, wherein the abutting portion is connected to the adjusting portion, and the adjusting portion is adjustably arranged on the first clamping member 111. An arc-shaped abutting surface is arranged on one end of the abutting portion facing the pipeline to be measured, so as to improve the abutting fit between the adjusting member and the outside of the pipeline to be measured and ensure the stability of the pipeline clamping.

[0050] Furthermore, a heat insulating member 13 is provided on the side of the first clamping member 111 and / or the second clamping member 112 and / or the adjusting member facing the pipeline to be tested, so as to further reduce the risk of high temperature burns to the operators.

[0051] For example, specifically in this embodiment, a heat insulating member 13 is provided on the abutting portion of the first clamping member 111 and the adjusting member. The heat insulating member 13 is made of annular polytetrafluoroethylene material and has a good heat insulating effect. In other embodiments, the heat insulating member 13 may also be made of other heat insulating materials.

[0052] Optionally, the fixing structure 2 includes a guide tube 21 and a stopper 22. The guide tube 21 extends along the length direction of the pipeline to be tested and is connected to the connecting structure 3; the stopper 22 is arranged on the side wall of the guide tube 21 and is adjustable in the radial direction of the guide tube 21 to press against the source tube and fix the source tube in the guide tube 21 to ensure the imaging quality of the X-ray detection.

[0053] Specifically, a threaded hole is opened on the side wall of the guide tube 21, and the limit member 22 includes a limit rod and a limit portion, the limit portion is connected to one end of the limit rod extending into the guide tube 21, the limit rod is passed through the threaded hole, and a thread is provided on the outer peripheral wall of the limit rod; the limit portion abuts against the source guide tube; by screwing the limit rod, the limit portion can abut against the source guide tube to fix the source guide tube in the wire tube.

[0054] Furthermore, a non-slip part is provided on the side of the limiting part facing the source guide tube, and the non-slip part is a non-slip pad, such as a rubber pad, or the non-slip part is a non-slip protrusion, and the non-slip protrusion can be a dot-shaped protrusion, or a pattern protrusion of any shape, and its function is to increase the contact friction between the limiting part and the source guide tube to prevent the source guide tube from moving. The specific form is referred to the prior art, and is not specifically limited in this embodiment, as long as it can play a role in increasing friction.

[0055] Optionally, refer to Figure 1 The connection structure 3 includes a first connection tube 31 and a second connection tube 32. The second connection tube 32 is adjustably arranged on the first connection tube 31. One end of the first connection tube 31 away from the second connection tube 32 is fixed on the clamping assembly 11, and one end of the second connection tube 32 away from the first connection tube 31 is connected to the fixed structure 2. The above arrangement adjusts the relative position of the first connection tube 31 and the second connection tube 32 according to the exposure distance calculated according to the size of the pipe diameter to be measured, so as to adjust the distance between the source tube penetrating the fixed structure 2 and the pipe to be measured, and is applicable to the pipe ray detection of different pipe diameters.

[0056] Furthermore, combined with Figure 2 The connection structure 3 further includes a plurality of connection members 33. The plurality of connection members 33 are arranged at intervals along the length direction of the first connection tube 31, and each connection member 33 penetrates the side wall of the first connection tube 31 and abuts against the second connection tube 32 to achieve the fixation of the first connection tube 31 and the second connection tube 32, thereby ensuring the stability of the source tube passing through the fixed structure 2, and further ensuring the quality of the radiographic detection imaging.

[0057] For example, in this embodiment, two connectors 33 are provided; and two connecting holes are provided on the outer wall of the first connecting tube 31, each of which is provided with a connecting nut coaxially provided with the connecting hole, the connecting nut is welded to the outer wall of the first connecting tube 31, the two connectors 33 are provided in the two connecting holes in a one-to-one correspondence, and are threadedly connected with the two connecting nuts in a one-to-one correspondence, and the connectors 33 are screwed to press against the second connecting tube 32 to achieve the fixation of the first connecting tube 31 and the second connecting tube 32. In other embodiments, the connecting nut may not be provided, the connecting hole may be provided as a threaded hole, and the connector 33 may be directly threadedly connected in the connecting hole.

[0058] In addition, optionally, an operating portion is provided at one end of each connecting member 33 away from the first connecting pipe 31 to make the operation more convenient and improve the working efficiency.

[0059] Alternatively, the first connecting tube 31 is provided with an internal thread on its inner wall, and the second connecting tube 32 is provided with an external thread on its outer wall. The first connecting tube 31 and the second connecting tube 32 are threadedly matched to adjust the distance between the fixing structure 2 and the pipeline to be tested.

[0060] Optionally, a scale is provided on the second connecting pipe 32 to facilitate maintenance personnel to quickly adjust the distance between the fixed structure 2 and the pipeline to be tested, thereby improving maintenance work efficiency.

[0061] In other embodiments, no scale may be provided, and a measuring ruler may be used to directly measure the distance between the fixing mechanism and the pipeline to be measured.

[0062] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A high-temperature small-diameter pipeline ray detection auxiliary device, characterized in that: include: The clamping structure (1) comprises a clamping component (11) and an adjusting component (12), wherein the clamping component (11) is clamped on a pipeline to be tested, and the adjusting component (12) is arranged on the clamping component (11) in an adjustable manner and pressed against an outer wall of the pipeline to be tested; A fixed structure (2) is arranged at a distance from the pipeline to be tested and is used to penetrate the source guide pipe; The connection structure (3) is connected between the clamping assembly (11) and the fixed structure (2), and can adjust the distance between the clamping assembly (11) and the fixed structure (2).

2. The high-temperature small-diameter pipeline ray detection auxiliary device according to claim 1 is characterized in that: The clamping assembly (11) comprises a first clamping member (111) and a second clamping member (112) respectively arranged on both sides of the pipeline to be tested, wherein the first end of the first clamping member (111) is rotatably connected to the first end of the second clamping member (112), and the second end of the first clamping member (111) is detachably connected to the second end of the second clamping member (112); The adjustment component (12) is arranged on the first clamping member (111) and / or the second clamping member (112).

3. The high-temperature small-diameter pipeline ray detection auxiliary device according to claim 2 is characterized in that: The adjustment component (12) comprises a plurality of adjustment members, the plurality of adjustment members are arranged at intervals on the first clamping member (111) and / or the second clamping member (112), and each of the adjustment members can be pressed against the outer wall of the pipeline to be tested.

4. The high-temperature small-diameter pipeline ray detection auxiliary device according to claim 3 is characterized in that: A heat insulating member (13) is provided on a side of the first clamping member (111) and / or the second clamping member (112) and / or the adjusting member facing the pipeline to be tested.

5. The high-temperature small-diameter pipeline ray detection auxiliary device according to claim 2 is characterized in that: The clamping assembly (11) further comprises a locking member (113); A first locking hole is formed at the second end of the first clamping member (111), a second locking hole is formed at the second end of the second clamping member (112), and the locking member (113) is inserted through the first locking hole and the second locking hole.

6. The high-temperature small-diameter pipeline ray detection auxiliary device according to claim 1 is characterized in that: The fixing structure (2) comprises a guide tube (21) and a limiting member (22); The guide tube (21) extends along the length direction of the pipeline to be measured and is connected to the connection structure (3); the limiter (22) is arranged on the side wall of the guide tube (21) and is adjustable in position along the radial direction of the guide tube (21) so as to be pressed against the source guide tube.

7. The high-temperature small-diameter pipeline ray detection auxiliary device according to claim 1 is characterized in that: The connection structure (3) comprises a first connection pipe (31) and a second connection pipe (32), wherein the second connection pipe (32) is adjustably arranged on the first connection pipe (31); One end of the first connecting tube (31) away from the second connecting tube (32) is fixed to the clamping assembly (11), and one end of the second connecting tube (32) away from the first connecting tube (31) is connected to the fixed structure (2).

8. The high-temperature small-diameter pipeline ray detection auxiliary device according to claim 7 is characterized in that: The connection structure (3) further comprises a plurality of connection members (33); A plurality of the connecting pieces (33) are arranged at intervals along the length direction of the first connecting pipe (31); each of the connecting pieces (33) penetrates the side wall of the first connecting pipe (31) and abuts against the second connecting pipe (32).

9. The high-temperature small-diameter pipeline ray detection auxiliary device according to claim 7 is characterized in that: An internal thread is provided on the inner wall of the first connecting tube (31), and an external thread is provided on the outer wall of the second connecting tube (32); the first connecting tube (31) and the second connecting tube (32) are threadably matched.

10. The high-temperature small-diameter pipeline ray detection auxiliary device according to any one of claims 7 to 9, characterized in that: The second connecting pipe (32) is provided with a scale.

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