CN217033710U - Special radiographic inspection instrument of nuclear power plant - Google Patents

Abstract

The utility model relates to a special radiographic inspection tool for a nuclear power plant, which comprises a supporting assembly, a first connecting rod and a second connecting rod, wherein the supporting assembly comprises a first rod body and a second rod body; a radioactive source support assembly for fixing a radiographic inspection guide source tube is arranged at the first end of the first rod body, the second end of the first rod body is rotatably connected with the first end of the second rod body, and a fixing assembly for fixing the second rod body during measurement is arranged at the second end of the second rod body; the device also comprises a limiting assembly which can be fixed on a pipeline of a nuclear power plant and is matched with the radiographic inspection guide source pipe so as to detect the detected workpiece. The flaw detection device can detect flaws through the matching of the supporting component and the limiting component, the supporting component can be fixedly placed according to the fixing component, and the flaw detection device has the effects of strong adaptability, high efficiency, more environmental protection due to repeated use and the like.

Description

Special radiographic inspection instrument of nuclear power plant

Technical Field

The utility model relates to the technical field of radiographic inspection, in particular to a radiographic inspection tool special for a nuclear power plant.

Background

The radiographic inspection is an inspection method for finding defects in a planned specimen by using a film as a device for recording information, the planned specimen being penetrable by X-rays or gamma-rays and having attenuation characteristics in the planned specimen. Radiation inspection is widely used in a variety of industries or fields. The application of ray inspection in the conventional island and nuclear island installation, maintenance and reconstruction projects of a nuclear power plant has the characteristics.

When the ray flaw detector is electrified, the high-voltage generator and the light pipe generate electron beams, and the electron beams impact a target to generate rays. The ray attenuation coefficients are different by different substances and different object structures. When the workpiece is irradiated by ray, the imaging plate is placed on another surface of the workpiece, when the workpiece is irradiated by ray, the film is placed on the bottom surface of the workpiece, because the defect material and the non-defect material absorb ray differently, the defect of the workpiece is developed on the film, and the nature, size, shape and position of the defect of the workpiece can be judged by means of the image of the defect. And carrying out nondestructive testing on the welding seams of workpieces made of carbon steel, alloy steel and stainless steel by utilizing rays.

The flaw detection operation flow is as follows: the working personnel wear the protective articles, draw out a control area and a supervision area, set up warning signs, and cover lead skins, steel plates and the like around the flaw detection equipment and the flaw detection piece for shielding according to the needs. The shielding capability of the radiation shielding device is determined according to the dose and distance of the operated rays, obstacles, geographical conditions and the like. The ray tube is arranged at a proper position near the detected workpiece, the controller and the ray generator are well connected by the connecting cable after being fixed, the connecting cables are confirmed to be connected correctly, and the power supply is switched on and the machine is started. And setting exposure parameters according to the material thickness of the detected workpiece to start exposure operation, such as setting voltage and exposure time, adjusting focal length, starting a delayed exposure button, and evacuating the personnel to the outside of the warning line after setting is completed. After exposure, relevant records, such as images, photos, field record data and the like, are made and are filed together with the scheme. And after the flaw detection operation is finished, cleaning the site, removing the warning, and conveying the film to an auxiliary room matched with a 2MeV linear accelerator flaw detection chamber for subsequent film development and evaluation.

In the radiographic inspection operation process, the fixing of the probe of the radioactive source and the fixing of the negative are both performed by adopting special adhesive tapes, the time is long when the flaw detection is performed in the nuclear island environment, the radiation is large, the fixing by using the adhesive tapes is greatly influenced by the environmental restriction factor, the efficiency is low, the environment is not protected, and the repeated use cannot be performed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a special radiographic inspection tool for a nuclear power plant, which has strong adaptability, high efficiency and environmental protection.

The technical scheme adopted by the utility model for solving the technical problem is as follows: constructing a special radiographic inspection tool for a nuclear power plant, wherein the special radiographic inspection tool comprises a support assembly, and the support assembly comprises a first rod body and a second rod body;

the first end of the first rod body is provided with a radioactive source support assembly used for fixing a radiographic inspection guide source tube, the second end of the first rod body is rotatably connected with the first end of the second rod body, and the second end of the second rod body is provided with a fixing assembly which plays a role in fixing during measurement.

Preferably, the support assembly comprises a first connector and a second connector; the first end of the first rod body is connected with the radioactive source support assembly through the first connecting piece; and the second end of the second rod body is connected with the fixed assembly through the second connecting piece.

Preferably, the second end of the first rod body is fixed with a first connecting part, the first end of the second rod body is fixed with a second connecting part, and the first connecting part is hinged to the second connecting part.

Preferably, a first mounting hole is formed in the center of the first connecting part, and a second mounting hole is formed in the center of the second connecting part;

the first mounting hole and the second mounting hole are fixed through the adjusting piece, so that the first rod body and the second rod body can rotate relatively, and the angle of the first rod body and the angle of the second rod body can be adjusted through the adjusting piece.

Preferably, the radioactive source support assembly comprises a radioactive source support rod, and the radioactive source support rod is connected with the first connecting piece so as to be fixed on the first rod body;

the radioactive source support rod is provided with at least two first radioactive source chucks, and the at least two first radioactive source chucks are arranged on the radioactive source support rod in a sliding mode.

Preferably, the fixing component is a magnetic base, and the supporting component is fixed on a pipeline of a nuclear power plant through magnetic attraction.

Preferably, the fixed subassembly includes clamping part and two clamp holders, two the clamp holder sets up the clamping part both ends, the clamping part is the elasticity material, through pulling two simultaneously to opposite direction the clamp holder makes the clamping part warp, will the clamping part card is on nuclear power plant's pipeline.

Preferably, the fixing assembly comprises an adapter, a telescopic pipe, an upper bracket and at least three supporting legs, wherein a first end of the adapter is connected with the supporting assembly, and a second end of the adapter is connected with the telescopic pipe; the upper bracket is sleeved outside the telescopic pipe in a sliding manner, and the upper end of each supporting leg is hinged with the upper bracket.

Preferably, the special radiographic inspection tool for the nuclear power plant further comprises a limiting assembly which can be fixed on a pipeline of the nuclear power plant and is matched with the radiographic inspection guide source pipe to detect the detected workpiece.

Preferably, spacing subassembly is including first clip and second clip, first clip with connect through universal adapter between the second clip, second clip top is fixed with the cloud platform, the cloud platform top is fixed with angle modulation pole, the angle modulation pole bottom is equipped with the film depression bar, the film depression bar with pass through threaded connection between the angle modulation pole.

The implementation of the utility model has the following beneficial effects: the flaw detection device can detect flaws by matching the supporting component and the limiting component, the supporting component can be fixedly placed according to the fixing component, and the flaw detection device has the effects of strong adaptability, high efficiency, more environmental protection due to repeated use and the like.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic structural diagram of a first embodiment of a special radiographic inspection tool for a nuclear power plant according to the utility model;

FIG. 2 is a schematic structural diagram of a second embodiment of the special radiographic inspection tool for a nuclear power plant;

FIG. 3 is a side view of a second embodiment of a nuclear power plant specific radiographic inspection tool of the present invention;

FIG. 4 is a schematic structural diagram of a third embodiment of the special radiographic inspection tool for a nuclear power plant;

FIG. 5 is a schematic structural diagram of a limiting component of the special radiographic inspection tool for a nuclear power plant.

Detailed Description

For a more clear understanding of the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, it is to be understood that the orientations and positional relationships indicated by the terms "front", "rear", "upper", "lower", "left", "right", "longitudinal", "lateral", "vertical", "horizontal", "top", "bottom", "inner", "outer", "leading", "trailing", and the like are configured and operated in specific orientations based on the orientations and positional relationships shown in the drawings, and are only for convenience of description of the present technical solution, but do not indicate that the device or element referred to must have a specific orientation, and thus, cannot be construed as limiting the present invention.

It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the utility model. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

Referring to fig. 1-5, the special radiographic inspection tool for a nuclear power plant of the present invention includes a support assembly 1, where the support assembly 1 includes a first rod 11 and a second rod 12;

as shown in fig. 1, a radiation source bracket assembly 2 for fixing a radiation inspection source guide tube is arranged at a first end of a first rod body 11, a second end of the first rod body 11 is rotatably connected with a first end of a second rod body 12, and a fixing assembly 3 for fixing the second rod body 12 during measurement is arranged at a second end of the second rod body 12; furthermore, in order to more conveniently detect, the device also comprises a limiting component 4 which can be fixed on a pipeline of the nuclear power plant and is matched with the radiographic inspection source guiding pipe to detect the detected workpiece, and when the device is used, the limiting component 4 is fixed on the pipeline of the nuclear power plant and is matched with the radiographic inspection source guiding pipe to detect the detected workpiece. Wherein, the first end of the first rod 11 and the second end of the second rod 12 are opposite ends, i.e. the radiation source support assembly 2 and the fixing assembly 3 are respectively arranged on the opposite ends of the first rod 11 and the second rod 12.

Further, the support assembly includes a first connector 111 and a second connector 121; the first end of the first rod 11 is connected with the radioactive source bracket assembly 2 through a first connecting piece 111; the second end of the second rod 12 is connected to the fixing element 3 through a second connecting element 121. Specifically, a first end of the first connecting member 111 is connected to the radiation source support assembly 2, and a second end of the first connecting member 111 is fixed to the first rod 11. The radiation source support assembly 2 and the first connecting member 111 can be connected by threads, and it is understood that the radiation source support assembly 2 and the first connecting member 111 can be connected by other connecting methods, which are not limited to the threaded connection, and are not described herein.

Further, a first connecting portion 112 is fixed at a second end of the first rod 11; a second connecting portion 122 is fixed at a first end of the second rod 12, and the first connecting portion 112 is hinged to the second connecting portion 122, so that the first rod 11 and the second rod 12 can rotate relative to each other, thereby realizing angle adjustment; a second connecting piece 121 is arranged at the second end of the second rod body 12, and the second connecting piece 121 is used for connecting the fixing component 3; specifically, a first end of the second connecting member 121 is fixed on the second rod 12, and a second end of the second connecting member 121 is connected to the fixing element 3. The fixing component 3 and the second connecting member 121 can be connected by a screw thread, and it is understood that the fixing component 3 and the second connecting member 121 can be connected by other connecting methods, which are not limited to the screw thread connection, and are not described herein.

Further, a first mounting hole is formed in the center of the first connecting portion 112, and a second mounting hole is formed in the center of the second connecting portion 122; the first mounting hole and the second mounting hole are fixed through the adjusting piece 13, so that the first rod body 11 and the second rod body 12 can rotate relatively, and the angle of the first rod body 11 and the angle of the second rod body 12 can be adjusted through the adjusting piece 13. Specifically, all be equipped with the internal thread in first mounting hole and the second mounting hole, regulating part 13 can be the bolt, with this bolt fastening in first mounting hole and second mounting hole to the accessible rotates the bolt and carries out angle adjustment to first body of rod 11 and the second body of rod 12, makes the nimble source focus of adjusting of radiographic inspection guide pipe.

Further, the radioactive source support assembly 2 includes a radioactive source support rod 21, and the radioactive source support rod 21 is connected to the first rod 11 through a first connecting member 111; specifically, radiation source cradling piece 21 can directly be connected with first body of rod 11 through first connecting piece 111, perhaps can set up an extension rod between radiation source cradling piece 21 and first connecting piece 111, and the extension rod is fixed on first connecting piece 111, and radiation source cradling piece 21 and extension rod rotatable coupling for radiation source cradling piece 2 is rotatable certain angle, thereby fixes radiographic inspection guide tube in a flexible way. The radioactive source support rod 21 is provided with at least two first radioactive source chucks 22, and the at least two first radioactive source chucks 22 are arranged on the radioactive source support rod 21 in a sliding manner; by slidably adjusting the at least two first radiation source clamps 22, the radiographic inspection guide tube can be clamped between the at least two first radiation source clamps 22. It is to be understood that the number of first radiation source holders 22 can be adjusted according to the actual situation, and the number of first radiation source holders 22 is not specifically required.

Further, in the first embodiment, the fixing component 3 is a magnetic base, and the support component 1 is fixed on the pipeline of the nuclear power plant by magnetic attraction. Second connecting piece 121 second end passes through threaded connection with the magnetic base, opens the magnetic base through magnetic base front surface switch, and the magnetic base performance magnetic force is fixed on the iron object with supporting component 1 magnetism.

As shown in fig. 2 to 3, further, in the second embodiment, the fixing assembly 3 includes a clamping portion 31a and two clamping handles 32a, the two clamping handles 32 are disposed at two ends of the clamping portion 31, the clamping portion 31 is made of an elastic material, and the clamping portion 31 is clamped on the pipe and the steel grating of the nuclear power plant by simultaneously pulling the two clamping handles 32 in opposite directions to deform the clamping portion 31.

As shown in fig. 4, further, in the third embodiment, the fixing assembly 3 includes an adaptor 31b, a telescopic tube 32b, an upper bracket 33b and at least three supporting feet 34b, a first end of the adaptor 31b is connected with the support assembly 1, and a second end of the adaptor 31b is connected with the telescopic tube 32 b; the upper bracket 33b is slidably sleeved outside the extension tube 32b, and the upper end of each supporting foot 34b is hinged with the upper bracket 33 b. Specifically, adaptor 31b includes universal ball and the sleeve of cover at universal ball surface, and sleeve surface threaded connection has the screw of screwing up, and the one end that universal ball was kept away from to the sleeve is connected with flexible pipe 32b, and the universal ball of adaptor 31b is connected with second connecting piece 121 of supporting component 1 to realize being connected of adaptor 31b and supporting component 1.

This fixed subassembly 3 can be placed on flat ground through supporting legs 34b, through the adjustment position of the first radiation source chuck 22 that slides, carries out rigidity with the radiographic inspection guide source pipe, carries out horizontal angle regulation through rotating first body of rod 11, makes the radiographic inspection guide source pipe carry out the angle modulation through universal ball for the radiographic inspection guide source pipe can adjust source focus in a flexible way.

As shown in fig. 5, further, the limiting assembly 4 includes a first clip 41 and a second clip 42, the first clip 41 and the second clip 42 are connected through a universal adapter 43, a cradle head 44 is fixed at the top of the second clip 42, an angle adjusting rod 45 is fixed at the top of the cradle head 44, a film pressing rod 46 is arranged at the bottom end of the angle adjusting rod 45, and the film pressing rod 46 is connected with the angle adjusting rod 45 through a thread.

Further, a film clamping groove 47 for limiting the film is formed in the film pressing rod 46 away from the angle adjusting rod 45.

During the measurement, live the film through first clip 41 clamp, fix second clip 42 clamp in pipeline, steel grating department again to go into the film other end card and go into the film draw-in groove 47 internal fixation, adjust cloud platform 44, angle adjusting rod 45 and make film and pipeline laminating, make can be closer to pipeline welded node more. Understandably, the film can be clamped by the second clamp 42, the first clamp 41 is clamped on the pipeline and the steel grating for fixing, the adjustment can be made here, only one of the clamps is needed to clamp the film, the other clamp is fixed on the pipeline and the steel grating, and the first clamp 41 and the second clamp 42 are connected through the universal adapter 43, so that the angle can be flexibly adjusted for the two clamps, and the detection work can be completed by matching.

Can detect a flaw through the cooperation between supporting component 1 and the spacing subassembly 4 when field usage, different fixed subassemblies can be connected as required to supporting component 1 simultaneously, for example switch magnetic base or clamping part 31a and fix and place, can place fixed the use through supporting legs 34b when not field usage for can adapt multiple needs and multiple scene use, have that adaptability is strong, efficient, effect such as reuse environmental protection more.

It is to be understood that the foregoing examples, while indicating the preferred embodiments of the utility model, are given by way of illustration and description, and are not to be construed as limiting the scope of the utility model; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.

Claims (10)

1. The special radiographic inspection tool for the nuclear power plant is characterized by comprising a support assembly (1), wherein the support assembly (1) comprises a first rod body (11) and a second rod body (12);

the first end of the first body of rod (11) is equipped with radiation source bracket component (2) that are used for fixed radiographic inspection guide source pipe, the first body of rod (11) second end with rotatable coupling between the first end of the second body of rod (12), the second body of rod (12) second end is equipped with fixed subassembly (3) that play the fixed action when measuring.

2. The nuclear power plant specific radiographic inspection tool of claim 1, wherein the support assembly includes a first connector (111) and a second connector (121); the first end of the first rod body (11) is connected with the radioactive source bracket assembly (2) through the first connecting piece (111); the second end of the second rod body (12) is connected with the fixed component (3) through the second connecting piece (121).

3. The special radiographic inspection tool for nuclear power plants as claimed in claim 2, wherein a first connecting portion (112) is fixed to a second end of the first rod body (11), a second connecting portion (122) is fixed to a first end of the second rod body (12), and the first connecting portion (112) and the second connecting portion (122) are hinged.

4. The special radiographic inspection tool for nuclear power plants as claimed in claim 3, wherein the first connecting portion (112) is centrally provided with a first mounting hole, and the second connecting portion (122) is centrally provided with a second mounting hole;

the first mounting hole and the second mounting hole are fixed through an adjusting piece (13), so that the first rod body (11) and the second rod body (12) can rotate relatively, and the first rod body (11) and the second rod body (12) can be subjected to angle adjustment through the adjusting piece (13).

5. The radiographic inspection tool special for nuclear power plants according to claim 2, characterized in that the radiation source support assembly (2) comprises a radiation source support rod (21), the radiation source support rod (21) being connected with the first connecting piece (111) to be fixed on the first rod body (11);

the radioactive source support rod (21) is provided with at least two first radioactive source chucks (22), and the at least two first radioactive source chucks (22) are arranged on the radioactive source support rod (21) in a sliding mode.

6. The special radiographic inspection tool for nuclear power plants according to claim 1, characterized in that the fixing component (3) is a magnetic base, and the support component (1) is fixed on a pipeline of a nuclear power plant through magnetic attraction.

7. The special radiographic inspection tool for nuclear power plants according to claim 1, wherein the fixing assembly (3) comprises a clamping portion (31a) and two clamping handles (32a), the two clamping handles (32) are arranged at two ends of the clamping portion (31), the clamping portion (31) is made of elastic material, and the clamping portion (31) is clamped on a pipeline of the nuclear power plant by simultaneously pulling the two clamping handles (32) in opposite directions to deform the clamping portion (31).

8. The special radiographic inspection tool for nuclear power plants according to claim 1, characterized in that the fixing assembly (3) comprises an adapter (31b), a telescopic tube (32b), an upper bracket (33b) and at least three support feet (34b), wherein a first end of the adapter (31b) is connected with the support assembly (1), and a second end of the adapter (31b) is connected with the telescopic tube (32 b); the upper support (33b) is sleeved outside the extension tube (32b) in a sliding manner, and the upper end of each supporting leg (34b) is hinged to the upper support (33 b).

9. The special radiographic inspection tool for nuclear power plants of claim 1, further comprising a limiting component (4) which can be fixed on a pipeline of a nuclear power plant and matched with a radiographic inspection guide source pipe to detect a detected workpiece.

10. The special radiographic inspection instrument of nuclear power plant of claim 9, characterized in that, spacing subassembly (4) is including first clip (41) and second clip (42), connect through universal adapter (43) between first clip (41) and the second clip (42), second clip (42) top is fixed with cloud platform (44), cloud platform (44) top is fixed with angle adjusting rod (45), angle adjusting rod (45) bottom is equipped with film depression bar (46), film depression bar (46) with pass through threaded connection between angle adjusting rod (45).

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