An auxiliary device for detecting welds in a radioactive source containment vessel

Abstract

The application relates to the field of pipeline weld detection and discloses an auxiliary device for detecting pipeline welds by using radioactive sources, which comprises a radioactive source clamping module and a pipeline clamping module, the pipeline clamping module and the radioactive source clamping module are connected, the pipeline clamping module comprises left clamping arms and right clamping arms, the left clamping arms and the right clamping arms are hingedly connected, a sliding assembly is arranged on the left clamping arms, a reversing assembly is arranged on the left clamping arms and the right clamping arms, and the reversing assembly and the sliding assembly are connected. The auxiliary device for detecting pipeline welds by using radioactive sources can adjust the position of the radioactive source auxiliary device on the pipeline by adjusting the gear of the reversing assembly, so that the sliding assembly is at different angles, the position of the radioactive source auxiliary device on the pipeline can be adjusted without disassembly, and omnibearing detection of the pipeline welds is realized.

Description

Technical Field

[0001] This invention relates to the technical field of detecting pipeline welds using radioactive sources, and more particularly to an auxiliary device for detecting pipeline welds using radioactive sources. Background Technology

[0002] Radiographic testing, also known as pipe flaw detection, is a non-destructive testing method that utilizes X-rays generated by an X-ray tube or gamma rays generated by radioactive isotopes to penetrate the workpiece, using film as the recording medium. This is the most basic and widely used radiographic testing method. The radioactive source is fixed to the pipe by an auxiliary device, which typically consists of clamping components, moving components, and focusing components.

[0003] During use, the radiation source detection auxiliary device needs to be frequently disassembled on the pipeline to adapt to different flaw detection positions, and changing the position of the auxiliary device is very inconvenient. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problem that the existing auxiliary devices for detecting pipeline welds using radioactive sources are very inconvenient to change the location of the auxiliary devices, this invention is proposed.

[0006] Therefore, the purpose of this invention is to provide an auxiliary device for detecting pipeline welds using a radioactive source, the purpose of which is to allow adjustment of the position of the radioactive source auxiliary device on the pipeline without disassembly.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including a radiation source clamping module and a pipe clamping module, wherein the pipe clamping module and the radiation source clamping module are connected, the pipe clamping module includes a left clamping arm and a right clamping arm, the left clamping arm and the right clamping arm are hinged together, a sliding component is disposed on the left clamping arm, and a reversing component is disposed on the left clamping arm and the right clamping arm, wherein the reversing component and the sliding component are connected.

[0008] As a preferred embodiment of the auxiliary device for detecting pipeline welds using a radioactive source according to the present invention, the sliding assembly includes a rotating shaft disposed on the left clamping arm, a sliding element disposed on the rotating shaft, a tensioning element disposed on the sliding element, and a reset element disposed on the left clamping arm, wherein the reset element is connected to the rotating shaft.

[0009] As a preferred embodiment of the auxiliary device for detecting pipeline welds using a radioactive source according to the present invention, the sliding element includes a support crossbar disposed on a rotating shaft, a first rotating roller and a second rotating roller disposed at both ends of the support crossbar, and a belt disposed on the first rotating roller and the second rotating roller.

[0010] As a preferred embodiment of the auxiliary device for detecting pipeline welds using a radioactive source according to the present invention, the tensioning element includes a limiting ring disposed on a rotating shaft, a tensioning roller disposed on the limiting ring, and a tensioning spring disposed on the rotating shaft, wherein the tensioning spring is located between the limiting ring and the support crossbar.

[0011] As a preferred embodiment of the auxiliary device for detecting pipeline welds using a radioactive source according to the present invention, the reset element includes: a circular groove disposed on the left clamping arm; a torsion spring disposed in the circular groove and connected to the rotating shaft and the left clamping arm; a first washer disposed on the rotating shaft and in contact with the left clamping arm; and a first turntable disposed on the rotating shaft and in contact with the first washer.

[0012] As a preferred embodiment of the auxiliary device for detecting pipeline welds using a radioactive source according to the present invention, the reversing assembly includes a second pad disposed on the right clamping arm, a second turntable disposed on the second pad, a gear plate disposed on the second turntable, a rotating handle disposed on the right clamping arm and connected to the second turntable, a support rod disposed on the rotating handle, and a cable disposed on the first and second discs.

[0013] As a preferred embodiment of the auxiliary device for detecting pipeline welds using a radioactive source according to the present invention, the pipeline clamping module includes a self-locking assembly disposed on the left clamping arm and the right clamping arm. The self-locking assembly includes a ratchet disposed on the left clamping arm, a ratchet plate disposed on the right clamping arm, and a pin disposed on the right clamping arm.

[0014] As a preferred embodiment of the auxiliary device for detecting pipeline welds using a radioactive source according to the present invention, the gear plate is provided with a first gear groove, a second gear groove and a third gear groove, and the gear grooves are spaced 45° apart.

[0015] As a preferred embodiment of the auxiliary device for detecting pipeline welds using a radioactive source according to the present invention, the radioactive source clamping module includes a T-shaped bracket on the left clamping arm, a bracket sleeve on the T-shaped bracket, a threaded hole on the bracket sleeve, a clamping bolt in the threaded hole, a radioactive source bracket on the bracket sleeve, and a clamping hole on the radioactive source bracket.

[0016] As a preferred embodiment of the auxiliary device for detecting pipeline welds using a radioactive source according to the present invention, an arc-shaped protrusion is provided inside the clamping hole.

[0017] The beneficial effect of this invention is that the position of the radiation source auxiliary device on the pipeline can be adjusted without disassembly. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0019] Figure 1 This is a schematic diagram of the overall structure of the pipe clamping module of the present invention.

[0020] Figure 2 This is a cross-sectional view of the sliding component of the present invention.

[0021] Figure 3 This is a cross-sectional view of the pipe clamping module of the present invention.

[0022] Figure 4 This is a top view of the auxiliary device for detecting pipeline welds using a radioactive source according to the present invention.

[0023] Figure 5 This is a schematic diagram of the overall structure of the auxiliary device for detecting pipeline welds using a radioactive source according to the present invention. Detailed Implementation

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0027] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0028] Example 1

[0029] Reference Figure 1-3 This invention provides an auxiliary device for detecting pipe welds using a radioactive source. The device includes a radioactive source clamping module 100, which can be a fixed bracket, and a pipe clamping module 200 connected to the radioactive source clamping module 100. The pipe clamping module 200 includes a left clamping arm 101 and a right clamping arm 102, hinged together. A sliding component 103 is movably disposed on the left clamping arm 101 and contacts the outer wall of the pipe. A reversing component 104 is disposed on the left clamping arm 101 and the right clamping arm 102, connected to the sliding component 103. Two sets of sliding components 103 are symmetrically arranged on the left and right clamping arms 101 and 102. The reversing component 104 can be a rotating handle 104d.

[0030] The radiation source clamping module 100 can be clamped onto the pipe via the left clamping arm 101 and the right clamping arm 102; the pipe clamping module 200 can perform radial and circumferential movements via the sliding component 103. By changing its position, the radiation source can perform flaw detection on welds at different locations on the pipe.

[0031] The sliding assembly 103 includes a rotating shaft 103a rotatably mounted on the left clamping arm 101, a sliding element 103b fixedly connected to the rotating shaft 103a, a tensioning element 103c sleeved on the sliding element 103b, and a reset element 103d embedded in the left clamping arm 101, wherein the reset element 103d is connected to the rotating shaft 103a.

[0032] The sliding element 103b can rotate around the rotating shaft 103a. When the rotation is 0°, the sliding element 103b rotates around the circumference of the pipe wall; when the rotation is 90°, the sliding element 103b moves horizontally along the pipe wall; when the two sets of sliding elements 103b rotate 45° in different directions, the movement of the sliding assembly 103 is locked. The sliding element 103b can return to its initial angle of 0° by the reset element 103d.

[0033] The sliding element 103b includes a support crossbar 103b-1 fixedly mounted on the rotating shaft 103a, a first rotating roller 103b-2 and a second rotating roller 103b-3 rotatably mounted at both ends of the support crossbar 103b-1, and a belt 103b-4 slidably mounted on the first rotating roller 103b-2 and the second rotating roller 103b-3.

[0034] The first rotating roller 103b-1 and the second rotating roller 103b-3 are symmetrically arranged by the support crossbar 103b-1. The belt 103b-4 is elastic and slides between the two rotating rollers. The movement of the sliding assembly 103 is more stable by the contact between the belt 103b-4 and the outer wall of the tube.

[0035] The tensioning element 103c includes a limiting ring 103c-1 slidably disposed on the rotating shaft 103a, a tensioning roller 103c-2 fixedly disposed on the limiting ring 103c-1, and a tensioning spring 103c-3 disposed on the rotating shaft 103a, wherein the tensioning spring 103c-3 is located between the limiting ring 103c-1 and the support crossbar 103b-1.

[0036] Through the tension spring 103c-3, the limiting ring 103c-1 is squeezed away from the support crossbar 103b-1, thereby driving the tension roller 103c-2 to provide tension to the belt 103b-4, so that the belt 103b-4 is always in a taut state, making the operation of the sliding assembly 103 more stable.

[0037] The reset element 103d includes a circular groove 103d-1 disposed on the left clamping arm 101, a torsion spring 103d-2 disposed in the circular groove 103d-1 and the torsion spring 103d-2 connecting the rotating shaft 103a and the left clamping arm 101, a first washer 103d-3 disposed on the rotating shaft 103a, the washer being made of a soft material and the first washer 103d-3 contacting the left clamping arm 101, and a first turntable 103d-4 disposed on the rotating shaft 103a and the first turntable 103d-4 contacting the first washer 103d-3.

[0038] The gap between the first turntable 103d-4 and the arc-shaped clamping arm is eliminated by the first gasket 103d-3; the rotational force is provided by the torsion spring 103d-2, and the sliding assembly 103 can return to the initial angle when no external force is applied.

[0039] Compared to Embodiment 1, the pipe clamping module 200 further includes a self-locking assembly 105 disposed on the left clamping arm 101 and the right clamping arm 102. The self-locking assembly 105 includes a ratchet 105a disposed on the left clamping arm 101, a ratchet 105b disposed on the right clamping arm 102, the ratchet 105b being made of an elastic material, and a pin 105c disposed on the right clamping arm 102. The pin 105c is movable on the right clamping arm 102, and one end is connected to the ratchet 105b.

[0040] The ratchet 105a and the ratchet plate 105b work together to make the left clamping arm 101 and the right clamping arm 102 self-lock during the clamping process; by lifting the pin 105c, the ratchet plate 105b is lifted and contacts the self-locking, thereby the pipe clamping module 200 can be removed.

[0041] Example 2

[0042] Reference Figure 1-4 This is the second embodiment of the present invention, which differs from the first embodiment in that: the reversing assembly 104 includes a second pad 104a that is contacted and disposed on the right clamping arm 102, a second turntable 104b that is contacted and disposed on the second pad 104a, the edge of the turntable being provided with an arc groove, a gear plate 104c that is contacted and disposed on the second turntable 104b, a rotating handle 104d that is rotatably disposed on the right clamping arm 102 and connected to the second turntable 104b, a support rod 104e disposed on the rotating handle 104d, and a cable 104f disposed on the first and second discs; similarly, a cable 104f is also disposed between the second and third discs, the cable 104f is disposed in the groove of the turntable, and the winding direction of the cable 104f on the first and third discs is opposite, and the cable 104f is a steel wire cable 104f. The gear shift plate 104c is provided with a first gear shift groove 104g, a second gear shift groove 104h and a third gear shift groove 104i, and the gear shift grooves are spaced 45° apart; one side wall of the gear shift groove is set to be vertical and the other side is set to be inclined.

[0043] By rotating the handle 104d, the second wheel is rotated, thereby tightening the cable 104f. This causes the second and third wheels to rotate in different directions, which in turn drives the symmetrically arranged sliding components 103 to rotate in different directions. By screwing the support rod 104e into different gear slots, the sliding components 103 are in different working states. When the support rod 104e is in the first gear slot, the sliding components 103 can rotate along the outer wall of the pipe. When the support rod 104e is in the third gear slot, the sliding components 103 can move horizontally along the outer wall of the pipe. When the support rod 104e is in the second gear slot, the symmetrically arranged sliding components 103 rotate 45° in different directions, thereby locking the movement of the pipe clamping components.

[0044] The remaining structure is the same as that in Example 1.

[0045] Example 3

[0046] Reference Figure 1-5 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the radioactive source clamping module 100 includes a T-shaped bracket 201 fixedly mounted on the left clamping arm 101, the T-shaped bracket 201 being fixed to the left clamping arm 101 by three legs, a bracket sleeve 202 sleeved on the T-shaped bracket 201, a threaded hole 203 provided on the bracket sleeve 202, a clamping bolt 204 provided in the threaded hole 203, a radioactive source bracket 205 sleeved on the bracket sleeve 202, and a clamping hole 206 provided on the radioactive source bracket 205.

[0047] The radioactive source can be fixed on the radioactive source bracket 205 through the clamping hole 206; the position of the radioactive source bracket 205 can be adjusted by moving the bracket sleeve 202, thereby adjusting the distance between the radioactive source and the pipeline; the radioactive source bracket 205 can be fixed on the T-shaped bracket 201 by tightening the bolts.

[0048] Compared to Embodiment 2, an arc-shaped protrusion 207 is further provided inside the clamping hole 206.

[0049] Among them, the arc-shaped protrusion 207 is made of elastic material, which further increases the friction when the radiation source passes through the clamping hole 206, making the radiation source clamped more securely.

[0050] The remaining structure is the same as that in Example 2.

[0051] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0052] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An auxiliary device for detecting pipeline welds using a radioactive source, characterized in that: include, Radioactive source clamping module (100), and, A pipe clamping module (200) is connected to a radiation source clamping module (100). The pipe clamping module (200) includes a left clamping arm (101) and a right clamping arm (102), which are hinged together. A sliding component (103) is provided on the left clamping arm (101), and a reversing component (104) is provided on the left clamping arm (101) and the right clamping arm (102), which are connected to the sliding component (103). The sliding assembly (103) includes a rotating shaft (103a) disposed on the left clamping arm (101), a sliding element (103b) disposed on the rotating shaft (103a), a tensioning element (103c) disposed on the sliding element (103b), and a reset element (103d) disposed on the left clamping arm (101), wherein the reset element (103d) is connected to the rotating shaft (103a); The reversing assembly (104) includes a second pad (104a) disposed on the right clamping arm (102), a second turntable (104b) disposed on the second pad (104a), a gear shift plate (104c) disposed on the second turntable (104b), a rotating handle (104d) disposed on the right clamping arm (102), and the rotating handle (104d) is connected to the second turntable (104b), a support rod (104e) disposed on the rotating handle (104d), and a cable (104f) disposed on the first wheel and the second wheel. The pipe clamping module (200) includes a self-locking assembly (105) disposed on the left clamping arm (101) and the right clamping arm (102). The self-locking assembly (105) includes a ratchet (105a) disposed on the left clamping arm (101), a ratchet (105b) disposed on the right clamping arm (102), and a pin (105c) disposed on the right clamping arm (102).

2. The auxiliary device for detecting pipeline welds using a radioactive source according to claim 1, characterized in that: The sliding element (103b) includes a support crossbar (103b-1) disposed on the rotating shaft (103a), a first rotating roller (103b-2) and a second rotating roller (103b-3) disposed at both ends of the support crossbar (103b-1), and a belt (103b-4) disposed on the first rotating roller (103b-2) and the second rotating roller (103b-3).

3. The auxiliary device for detecting pipeline welds using a radioactive source according to claim 2, characterized in that: The tensioning element (103c) includes a limiting ring (103c-1) disposed on the rotating shaft (103a), a tensioning roller (103c-2) disposed on the limiting ring (103c-1), and a tensioning spring (103c-3) disposed on the rotating shaft (103a), with the tensioning spring (103c-3) located between the limiting ring (103c-1) and the support crossbar (103b-1).

4. The auxiliary device for detecting pipeline welds using a radioactive source according to claim 3, characterized in that: The reset element (103d) includes a circular groove (103d-1) disposed on the left clamping arm (101), a torsion spring (103d-2) disposed in the circular groove (103d-1), and the torsion spring (103d-2) connecting the rotating shaft (103a) and the left clamping arm (101), a first washer (103d-3) disposed on the rotating shaft (103a), and the first washer (103d-3) in contact with the left clamping arm (101), and a first turntable (103d-4) disposed on the rotating shaft (103a), and the first turntable (103d-4) in contact with the first washer (103d-3).

5. The auxiliary device for detecting pipeline welds using a radioactive source according to claim 4, characterized in that: The gear shift plate (104c) is provided with a first gear shift groove (104g), a second gear shift groove (104h) and a third gear shift groove (104i), and the gear shift grooves are spaced 45° apart.

6. The auxiliary device for detecting pipeline welds using a radioactive source according to claim 5, characterized in that: The radioactive source clamping module (100) includes a T-shaped bracket (201) on the left clamping arm (101), a bracket sleeve (202) on the T-shaped bracket (201), a threaded hole (203) on the bracket sleeve (202), a clamping bolt (204) in the threaded hole (203), a radioactive source bracket (205) on the bracket sleeve (202), and a clamping hole (206) on the radioactive source bracket (205).

7. The auxiliary device for detecting pipeline welds using a radioactive source according to claim 6, characterized in that: An arc-shaped protrusion (207) is provided inside the clamping hole (206).

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