Support device for radiographic inspection film system of voltage stabilizer

Abstract

The invention discloses a voltage stabilizer ray inspection film system supporting device which comprises a fastening hoop and a plurality of acting mechanisms, the fastening hoop is connected with the acting mechanisms and positions the acting mechanisms on a surge pipe connecting pipe, and the acting mechanisms are arranged in the circumferential direction of the surge pipe connecting pipe at intervals. Each acting mechanism comprises a supporting assembly, a positioning assembly and an adjusting assembly. According to the supporting device for the radiographic inspection film system of the voltage stabilizer, the film systems can be stably supported through the arrangement of the multiple acting mechanisms, each acting mechanism is independently arranged and can be rapidly separated and assembled on site, the position of each film system can be conveniently adjusted, and therefore it is guaranteed that the welding seam detection result is more accurate. Meanwhile, the adjusting assembly can drive the telescopic supporting rod to do axial and rotary motion and adjust the radial position of the telescopic supporting rod, the arrangement condition of each film system can be finely adjusted independently, and effective arrangement of the film systems in detected welding seams and the reliability of detection results are ensured.

Description

Technical Field

[0001] The invention relates to the field of weld inspection film systems, and in particular to a voltage stabilizer radiographic inspection film system support device. Background Art

[0002] The pressurizer of a nuclear power plant is a cylindrical container more than 10 meters high, welded with a hemispherical head at the top and bottom. The pressurizer is a primary core component of a nuclear power plant, used to regulate the pressure of the primary circuit system of the nuclear power plant. The surge pipe is welded to the lower head of the pressurizer, and the connecting weld is located inside the pressurizer support skirt.

[0003] According to the requirements of the relevant inspection specifications of nuclear power plants, in order to ensure the sealing state of the weld between the lower head of the pressurizer and the surge pipe pipe, thereby preventing leakage of materials inside the pressurizer cylinder, the pipe weld must be inspected regularly. In the prior art, the inspection of the weld can be carried out by radiographic detection, that is, a film is covered on one side of the weld to be inspected, and a radiographic image is emitted on the other side of the weld to be inspected to penetrate the weld and form an image on the film, thereby judging the welding quality of the weld. Since the weld to be inspected adopts the method of penetrating the center of the pressurizer by the radiation source, and the film is arranged at the weld outside the container, the weld to be inspected is at a certain angle to the horizontal direction, so a tool holder is required to fix the film system at a specified position.

[0004] Patent No. CN 201590265U discloses a radiographic inspection device for the weld between the lower head of a nuclear power plant pressurizer and a surge pipe pipe, including a film holder, which is mainly composed of a holder and a tray arranged on the holder, and the film is arranged on the inner side of the tray, and the inner side of the tray matches the outer circumference of the surge pipe pipe where the weld is located. The device adopts an integrated design, has a large overall weight, and can only be loaded and unloaded as a whole, making installation more difficult. In addition, during the installation process, it is impossible to observe whether the film system has been displaced, and it is impossible to fine-tune the position of the film system, so the reliability of the detection result cannot be fully guaranteed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a supporting device for a voltage stabilizer radiographic inspection film system.

[0006] The technical solution adopted by the present invention to solve the technical problem is: constructing a fastening clamp and a plurality of action mechanisms;

[0007] The fastening clamp connects a plurality of action mechanisms and positions the plurality of action mechanisms on the surge pipe pipe, and the plurality of action mechanisms are arranged at intervals along the circumferential direction of the surge pipe pipe;

[0008] Each of the action mechanisms comprises a supporting component, a positioning component and an adjusting component;

[0009] The positioning assembly is connected to the fastening hoop, and the supporting assembly is connected to the positioning assembly;

[0010] The support assembly includes a support tray for supporting the film system, a connecting piece fixedly connected to the support tray, and a telescopic support rod connected to the connecting piece; the telescopic support rod can move along the height direction of the surge pipe nozzle and can rotate along its own central axis;

[0011] The adjusting assembly is used to drive the telescopic support rod to move so as to adjust the spatial position of the supporting tray.

[0012] In some embodiments, the positioning assembly includes a retaining block movably connected to the telescopic support rod;

[0013] The retaining block includes a base portion, a connecting portion integrally formed with the base portion, and a mounting portion integrally formed with the base portion. The connecting portion is provided with a through hole for the telescopic support rod. The telescopic support rod can rotate around the central axis of the through hole and can move up and down along the central axis of the through hole.

[0014] In some embodiments, the positioning assembly further includes a limit block, and the adjustment assembly includes a limit shaft;

[0015] The limit block is provided with an arc-shaped guide hole and a mounting groove for mounting the base part. The limit shaft is connected to the base part and passes through the arc-shaped guide hole. The limit shaft can move in the arc-shaped guide hole.

[0016] In some embodiments, the adjustment assembly further includes a locking member movably connected to the limiting block, the locking member can move along the length direction of the limiting block, and the locking member is used to limit the movement of the limiting shaft.

[0017] In some embodiments, the positioning assembly also includes a circumferential positioning piece connected to the limit block, the circumferential positioning piece is provided with a central through hole for the fastening clamp to pass through, and the end face of the circumferential positioning piece away from the limit block abuts against the surge pipe connection of the regulator.

[0018] In some embodiments, the limit block is provided with a plurality of adjustment holes for connecting with the circumferential positioning member, and the adjustment holes are arranged along the length direction of the limit block.

[0019] In some embodiments, the adjustment assembly further includes a connecting rod fixedly connected to the lower end of the telescopic support rod and an adjustment limiter connected to the mounting portion;

[0020] The adjusting limiter is connected to the mounting portion via a locking member, and the connecting rod is passed through the adjusting limiter.

[0021] In some embodiments, the adjustment assembly further includes an operating handle and a transition block, wherein the upper end of the transition block is hinged to the adjustment stopper, the lower end of the transition block is hinged to the operating handle, and the operating handle is hinged to the lower end of the connecting rod;

[0022] The operating handle can drive the telescopic support rod to perform rotational motion or up and down motion.

[0023] In some embodiments, a receiving hole for mounting the upper end of the telescopic support rod is provided below the connecting member, and a plurality of locking holes communicating with the receiving hole are provided on the side wall of the connecting member.

[0024] In some embodiments, the two ends of the fastening clamp are connected by a snap fitting.

[0025] The implementation of the present invention has the following beneficial effects: the support device for the voltage stabilizer radiographic inspection film system can stably support the film system through the arrangement of multiple action mechanisms, and each action mechanism is arranged separately, can be quickly separated and assembled on site, and can conveniently adjust the position of each film system, thereby ensuring a more accurate weld inspection result. The structure is relatively simple, and the adjustment component can be used to drive the telescopic support rod to perform axial and rotational movements and adjust the radial position of the telescopic support rod, and the arrangement of each film system can be fine-tuned separately, ensuring the effective arrangement of the film system in the inspected weld and the reliability of the inspection result, and can adapt to the structural size changes of the voltage stabilizer surge tube weld on site. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work. In the drawings:

[0027] Figure 1 is a schematic diagram of the overall structure of a support device for a voltage stabilizer radiographic inspection film system in some embodiments of the present invention;

[0028] Figure 2 is a partial structural schematic diagram of a voltage stabilizer radiographic inspection film system support device in some embodiments of the present invention;

[0029] Figure 3 yes Figure 2 A schematic diagram of the structure in another direction;

[0030] Figure 4 It is a schematic diagram of the structure of the retaining block in some embodiments of the present invention. DETAILED DESCRIPTION

[0031] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0032] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0033] See also Figures 1 to 4, is a support device for a stabilizer radiographic inspection film system in some embodiments of the present invention, which includes a fastening clamp 1 and a plurality of actuating mechanisms, the fastening clamp 1 connects the plurality of actuating mechanisms and positions the plurality of actuating mechanisms on the surge tube 5, and the plurality of actuating mechanisms are arranged at intervals along the circumferential direction of the surge tube 5. Each actuating mechanism includes a support assembly 2, a positioning assembly 3 and an adjustment assembly 4, the positioning assembly 3 is connected to the fastening clamp 1, and the support assembly 2 is connected to the positioning assembly 3. Among them, the support assembly 2 includes a support tray 21 for supporting the film system, a connecting member 22 fixedly connected to the support tray 21, and a telescopic support rod 23 connected to the connecting member 22; the telescopic support rod 23 can move along the height direction of the surge tube 5, and can rotate along its own central axis, and the adjustment assembly 4 is used to drive the telescopic support rod 23 to move to adjust the spatial position of the support tray 21.

[0034] Specifically, Figure 1 As shown, each support assembly 2 is provided with a positioning assembly 3 and an adjustment assembly 4 in correspondence, and each support assembly 2, positioning assembly 3, and adjustment assembly 4 form a separate module. The inner diameter of the fastening clamp 1 matches the outer diameter of the surge pipe pipe 5, and it connects multiple positioning assemblies 3, so that multiple positioning assemblies 3 become a whole, and the two ends of the fastening clamp 1 are connected by a snap fastener. When the snap fastener is connected and fastened, the entire stabilizer radiographic inspection film system support device can be positioned on the surge pipe pipe 5. The support tray 21 can fix the film system to the place where the inspected weld needs to be covered. The adjustment assembly 4 can drive the telescopic support rod 23 to perform axial and rotational movements and adjust the radial position of the telescopic support rod 23, so that the spatial position of the support tray 21 can be accurately adjusted according to the on-site application conditions.

[0035] It can be understood that the support device for the film system of the voltage stabilizer radiographic inspection can stably support the film system through the arrangement of multiple action mechanisms, and each action mechanism is arranged separately, and can be quickly separated and assembled on site, and the position of each film system can be conveniently adjusted, thereby ensuring a more accurate weld inspection result. The structure is relatively simple, and the adjustment component 4 can be used to drive the telescopic support rod 23 to perform axial and rotational movements and adjust the radial position of the telescopic support rod 23, and the arrangement of each film system can be fine-tuned separately, ensuring the effective arrangement of the film system in the inspected weld and the reliability of the inspection results, and can adapt to the structural size changes of the voltage stabilizer surge tube weld on site.

[0036] like Figure 2As shown, a receiving hole for the upper end of the telescopic support rod 23 to be installed is provided below the connecting member 22, and a plurality of locking holes 222 in communication with the receiving hole are provided on the side wall of the connecting member 22. Before being locked and fixed, the upper end of the telescopic support rod 23 can rotate and move in the receiving hole, and the circumferential position of the support tray 21 can be adjusted according to the structural size change of the weld seam of the surge tube of the on-site stabilizer. After the adjustment is completed, it is installed into the locking hole 222 by fastening bolts for fixing.

[0037] like Figures 2 to 4 As shown, the positioning assembly 3 includes a retaining block 31 movably connected to the telescopic support rod 23, the retaining block 31 includes a base portion 311, a connecting portion 312 integrally formed with the base portion 311, and a mounting portion 313 integrally formed with the base portion 311, the connecting portion 312 is provided with a through hole 3121 for the telescopic support rod 23, the telescopic support rod 23 can rotate around the central axis of the through hole 3121, and can move up and down along the central axis of the through hole 3121. The through hole 3121 provides a guiding function for the telescopic support rod 23 to move up and down.

[0038] like Figure 3 As shown, the positioning assembly 3 further includes a limit block 32, and the adjustment assembly 4 further includes a limit shaft 41. The limit block 32 is provided with an arc-shaped guide hole 321 and a mounting groove 322 for mounting the base portion 311. The limit shaft 41 is connected to the base portion 311 and penetrates the arc-shaped guide hole 321. The limit shaft 41 can move in the arc-shaped guide hole 321. It can be understood that when the limit shaft 41 moves in the arc-shaped guide hole 321, the retaining block 31 and the telescopic support rod 23 are driven to move, so as to realize the angle adjustment function and radial adjustment function of the support tray 21. In addition, the retaining block 31 and the limit block 32 can be connected through the positioning shaft 35.

[0039] Furthermore, the adjustment assembly 4 further includes a stopper 43 movably connected to the limit block 32, the stopper 43 can move along the length direction of the limit block 32, and the stopper 43 is used to limit the movement of the limit shaft 41. After the position of the support tray 21 is adjusted by the limit shaft 41, the limit shaft 41 can be positioned by the stopper 43.

[0040] The positioning assembly 3 further includes a circumferential positioning member 33 connected to the stop block 32, and a central through hole 331 is provided in the circumferential positioning member 33 for the fastening clamp 1 to pass through, and the end surface of the circumferential positioning member 33 away from the stop block 32 abuts against the surge pipe pipe 5 of the pressurizer. The fastening clamp 1 can be connected to the circumferential positioning member 33 by bolts, and the length of the circumferential positioning member 33 matches the horizontal distance between the inspected weld and the outer circumference of the surge pipe pipe 5.

[0041] The limit block 32 is provided with a plurality of adjustment holes 323 for connecting with the circumferential positioning member 33 . The adjustment holes 323 are arranged along the length direction of the limit block 32 to facilitate the connection between the limit block 32 and the circumferential positioning member 33 , and the initial position of the limit block 32 can also be adjusted.

[0042] like Figure 3 As shown, the adjustment assembly 4 also includes a connecting rod 46 fixedly connected to the lower end of the telescopic support rod 23 and an adjustment limiter 47 connected to the mounting portion 313, the adjustment limiter 47 is connected to the mounting portion 313 through a locking member 48, and the connecting rod 46 is inserted into the adjustment limiter 47. The adjustment assembly 4 also includes an operating handle 44 and a transition block 45, the upper end of the transition block 45 is hinged to the adjustment limiter 47, the lower end of the transition block 45 is hinged to the operating handle 44, the operating handle 44 is hinged to the lower end of the connecting rod 46, and the operating handle 44 can drive the telescopic support rod 23 to rotate or move up and down. It can be understood that the operator can operate the operating handle 44 to make the telescopic support rod 23 rise or fall or rotate, so that the support tray 21 also rises or rotates accordingly. After adjusting the position, the locking member 48 can be locked.

[0043] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the scope covered by the claims of the present invention.

Claims

1. A support device for a stabilizer radiographic inspection film system, characterized in that: It comprises a fastening clamp (1) and a plurality of action mechanisms; The fastening clamp (1) connects a plurality of action mechanisms and positions the plurality of action mechanisms on the surge pipe pipe (5), and the plurality of action mechanisms are arranged at intervals along the circumferential direction of the surge pipe pipe (5); Each of the action mechanisms comprises a supporting component (2), a positioning component (3) and an adjusting component (4); The positioning component (3) is connected to the fastening hoop (1), and the supporting component (2) is connected to the positioning component (3); The support assembly (2) comprises a support tray (21) for supporting the film system, a connecting piece (22) fixedly connected to the support tray (21), and a telescopic support rod (23) connected to the connecting piece (22); the telescopic support rod (23) can move along the height direction of the surge pipe (5) and can rotate along its own central axis; The adjustment component (4) is used to drive the telescopic support rod (23) to move, so as to adjust the spatial position of the support tray (21).

2. The voltage stabilizer radiographic inspection film system support device according to claim 1, characterized in that: The positioning assembly (3) comprises a retaining block (31) movably connected to the telescopic support rod (23); The retaining block (31) comprises a base portion (311), a connecting portion (312) integrally formed with the base portion (311), and a mounting portion (313) integrally formed with the base portion (311); the connecting portion (312) is provided with a through hole (3121) for the telescopic support rod (23); the telescopic support rod (23) can rotate around the central axis of the through hole (3121) and can move up and down along the central axis of the through hole (3121).

3. The support device for the stabilizer radiographic inspection film system according to claim 2, characterized in that: The positioning assembly (3) further comprises a limiting block (32), and the adjusting assembly (4) comprises a limiting shaft (41); The limit block (32) is provided with an arc-shaped guide hole (321) and a mounting groove (322) for mounting the base portion (311); the limit shaft (41) is connected to the base portion (311) and passes through the arc-shaped guide hole (321); the limit shaft (41) can move in the arc-shaped guide hole (321).

4. The voltage stabilizer radiographic inspection film system support device according to claim 3, characterized in that: The adjustment assembly (4) further comprises a locking member (43) movably connected to the limiting block (32); the locking member (43) can move along the length direction of the limiting block (32); and the locking member (43) is used to limit the movement of the limiting shaft (41).

5. The voltage stabilizer radiographic inspection film system support device according to claim 3, characterized in that: The positioning assembly (3) further comprises a circumferential positioning member (33) connected to the limit block (32), wherein the circumferential positioning member (33) is provided with a central through hole (331) for the fastening clamp (1) to pass through, and an end surface of the circumferential positioning member (33) away from the limit block (32) abuts against the surge pipe (5) of the voltage regulator.

6. The voltage stabilizer radiographic inspection film system support device according to claim 5, characterized in that: The limit block (32) is provided with a plurality of adjustment holes (323) for connecting with the circumferential positioning member (33), and the adjustment holes (323) are arranged along the length direction of the limit block (32).

7. The voltage stabilizer radiographic inspection film system support device according to claim 2, characterized in that: The adjustment assembly (4) further comprises a connecting rod (46) fixedly connected to the lower end of the telescopic support rod (23) and an adjustment limiter (47) connected to the mounting portion (313); The adjusting limit piece (47) is connected to the mounting portion (313) via a locking piece (48), and the connecting rod (46) is inserted through the adjusting limit piece (47).

8. The voltage stabilizer radiographic inspection film system support device according to claim 7, characterized in that: The adjustment assembly (4) further comprises an operating handle (44) and a transition block (45), the upper end of the transition block (45) being hinged to the adjustment stopper (47), the lower end of the transition block (45) being hinged to the operating handle (44), and the operating handle (44) being hinged to the lower end of the connecting rod (46); The operating handle (44) can drive the telescopic support rod (23) to perform rotational movement or up and down movement.

9. The voltage stabilizer radiographic inspection film system support device according to claim 1, characterized in that: A receiving hole for mounting the upper end of the telescopic support rod (23) is provided below the connecting piece (22), and a plurality of locking holes (222) communicating with the receiving hole are provided on the side wall of the connecting piece (22).

10. The voltage stabilizer radiographic inspection film system support device according to claim 1, characterized in that: The two ends of the fastening clamp (1) are connected via a snap fastener.

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