Pressure vessel main bolt hole simulation device

Abstract

The utility model relates to the technical field of nuclear power plant pressure vessel detection, in particular to a pressure vessel main bolt hole simulation device. The simulation device is used for testing the main bolt hole cleaning device and comprises a support, an installation part, a flange and a plurality of bolt hole sleeves, the installation part is arranged on the support, the flange is detachably connected with the installation part, the flange is provided with a plurality of through holes, and the through holes and the bolt hole sleeves are arranged in a one-to-one correspondence mode. The bolt hole sleeves are connected to the bottom wall of the flange at intervals in the circumferential direction of the flange, the bolt hole sleeves communicate with the through holes, threads are arranged in the bolt hole sleeves, the bolt hole sleeves are used for simulating main bolt holes, and the cleaning device can clean the bolt hole sleeves. The device can test the cleaning device before cleaning the main bolt hole of the pressure vessel, so as to verify the performance and reliability of the cleaning device, ensure that the bolt hole can be cleaned, improve the cleaning efficiency, reduce the repair time and enable the pressure vessel to be put into use as soon as possible.

Description

TECHNICAL FIELD

[0001] The utility model relates to nuclear power plant pressure vessel detection technical field especially relates to a pressure vessel main bolt hole simulation device. BACKGROUND

[0002] The reactor pressure vessel main bolt hole cleaning inspection is the key path work during the repair of the pressurized water reactor nuclear power unit, and the automatic pressure vessel main bolt hole cleaning inspection equipment is usually used to perform the work. The pressure vessel main bolt hole cleaning inspection equipment is complex in structure, and highly integrates mechanical, electrical and instrument control components, therefore, the pressure vessel main bolt hole cleaning inspection equipment is prone to failure, however, the staff cannot judge whether the pressure vessel main bolt hole cleaning inspection equipment is faulty before use, and the fault can only be found during the repair of the pressure vessel, so that the bolt hole cannot be cleaned after the pressure vessel is disassembled, the cleaning efficiency is reduced, the repair time is increased, and the use of the pressure vessel is affected.

[0003] Therefore, a pressure vessel main bolt hole simulation device is needed to solve the above technical problems. UTILITY MODEL CONTENTS

[0004] The utility model discloses a pressure vessel main bolt hole simulation device, can test the cleaning device before the pressure vessel main bolt hole cleaning, to verify the performance and reliability of the cleaning device, guarantee that the bolt hole can be cleaned, improve the cleaning efficiency.

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

[0006] A pressure vessel main bolt hole simulation device is used for testing the main bolt hole cleaning device, and the simulation device comprises a support, a mounting piece, a flange and a plurality of bolt hole sleeves, the mounting piece is arranged on the support, the flange is detachably connected with the mounting piece, the flange is provided with a plurality of through holes, the plurality of through holes are arranged in one-to-one correspondence with the plurality of bolt hole sleeves, the plurality of bolt hole sleeves are connected to the bottom wall of the flange along the circumference of the flange, and the bolt hole sleeves are in communication with the through holes, the bolt hole sleeves are provided with threads, the bolt hole sleeves are used for simulating the main bolt hole, and the cleaning device can clean the bolt hole sleeves.

[0007] As one preferred technical scheme of the above-mentioned pressure vessel main bolt hole simulation device, the support comprises two legs and a connecting piece, the two legs are arranged at intervals, the two ends of the connecting piece are connected to the two legs respectively, and the mounting piece is arranged on the connecting piece.

[0008] As one preferred technical scheme of the above-mentioned pressure vessel main bolt hole simulation device, the leg is a stainless steel piece or a carbon steel piece.

[0009] As a kind of preferred technical scheme of the pressure vessel main bolt hole simulation device, the connecting piece is rectangular box.

[0010] As a kind of preferred technical scheme of the pressure vessel main bolt hole simulation device, the connecting piece is rectangular box.

[0011] As a kind of preferred technical scheme of the pressure vessel main bolt hole simulation device, the connecting piece is rectangular box.

[0012] As a kind of preferred technical scheme of the pressure vessel main bolt hole simulation device, the connecting piece is rectangular box.

[0013] As a kind of preferred technical scheme of the pressure vessel main bolt hole simulation device, the connecting piece is rectangular box.

[0014] As a kind of preferred technical scheme of the pressure vessel main bolt hole simulation device, the connecting piece is rectangular box.

[0015] As a kind of preferred technical scheme of the pressure vessel main bolt hole simulation device, the connecting piece is rectangular box.

[0016] The utility model has the advantages of:

[0017] The utility model provides a kind of pressure vessel main bolt hole simulation device. Simulation device, for testing main bolt hole cleaning device, simulation device includes: support, mounting piece, flange and several bolt hole sleeves, mounting piece is set to support, flange is detachably connected with mounting piece, flange is provided with several through holes, several through holes are set one to one with several bolt hole sleeves, several bolt hole sleeves are connected to the bottom wall of flange along the circumference of flange, and bolt hole sleeve is communicated with through hole, and bolt hole sleeve is provided with screw thread, bolt hole sleeve is used to simulate main bolt hole, cleaning device can clean bolt hole sleeve. The device can test cleaning device before cleaning main bolt hole of pressure vessel, to verify the performance and reliability of cleaning device, ensure that bolt hole can be cleaned, improve cleaning efficiency, reduce repair time, make pressure vessel be used as soon as possible. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the following description of the embodiments of the utility model will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the contents of the embodiments of the utility model and these drawings for those skilled in the art without creating labor.

[0019] Fig. 1 The structure front view of the pressure vessel main bolt hole simulation device provided by the embodiments of the utility model is provided.

[0020] Fig. 2 The structure top view of the pressure vessel main bolt hole simulation device provided by the embodiments of the utility model is provided.

[0021] Fig. 3 The structure schematic view of the support provided by the embodiments of the utility model is provided.

[0022] Fig. 4 The structure schematic view of the mounting piece provided by the embodiments of the utility model is provided.

[0023] In the drawing:

[0024] 1, support; 11, leg; 12, connecting piece; 13, bottom plate; 14, reinforcing piece; 2, mounting piece; 21, vertical plate; 22, horizontal plate; 23, frame; 3, flange; 31, through hole; 4, bolt hole sleeve; 5, reinforcing plate. DETAILED DESCRIPTION

[0025] The utility model will be further described in detail in combination with the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the utility model, not to limit the utility model. In addition, it needs to be explained that, in order to facilitate the description, only the parts related to the utility model are shown in the drawings, not all structures.

[0026] In the description of the utility model, unless another definite provision and limitation, the term "link", "connection", "fix" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through the intermediate medium, can be the communication of two elements or the interaction of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0027] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the direct contact of the first and second features, or the contact of the first and second features through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes the vertical above and oblique above of the first feature on the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature. The first feature "under", "below" and "below" the second feature includes the vertical below and oblique below of the first feature below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0028] In the description of the embodiment, the orientation or position relationship of the terms "on", "under", "left", "right" and the like is based on the orientation or position relationship shown in the drawing, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0029] As Figs. 1 to 4 As shown in the utility model provides a kind of pressure vessel main bolt hole simulation device. Simulation device, for testing main bolt hole cleaning device, simulation device includes: support 1, mounting piece 2, flange 3 and several bolt hole sleeves 4.

[0030] Specifically, mounting piece 2 is arranged on support 1, flange 3 is detachably connected with mounting piece 2, flange 3 is provided with several through holes 31, several through holes 31 are arranged one by one with several bolt hole sleeves 4, several bolt hole sleeves 4 are connected to the bottom wall of flange 3 along the circumference of flange 3, and bolt hole sleeve 4 is communicated with through hole 31, and bolt hole sleeve 4 is provided with screw threads in it, and bolt hole sleeve 4 is used to simulate main bolt hole, and cleaning device can clean bolt hole sleeve 4. The device can test the cleaning device before cleaning the main bolt hole of the pressure vessel to verify the performance and reliability of the cleaning device, ensure that the bolt hole can be cleaned, improve the cleaning efficiency, reduce the repair time, and make the pressure vessel put into use as soon as possible.

[0031] Optionally, the support 1 comprises two legs 11 and a connecting piece 12, the two legs 11 are arranged in a spaced manner, two ends of the connecting piece 12 are connected to the two legs 11 respectively, and the mounting piece 2 is arranged on the connecting piece 12, so that the stability of the support 1 can be improved, and the stability of the mounting piece 2 can be further improved.

[0032] Further, the leg 11 is made of stainless steel or carbon steel, the leg 11 and the connecting piece 12 are fixed by welding, and the thickness of the leg 11 ensures sufficient strength, so that the stability of the structure can be maintained in the case of supporting the mounting piece 2 and the cleaning device.

[0033] Optionally, the connecting piece 12 is a rectangular box, which can provide effective support for the mounting piece 2. Further, the front and rear sides of the connecting piece 12 are both n-shaped plates, and the left and right sides of the connecting piece 12 are both provided with rectangular openings, which can save materials.

[0034] Optionally, the support 1 further comprises two bottom plates 13, the two bottom plates 13 are arranged in a one-to-one correspondence with the two legs 11, the bottom plate 13 is connected to the bottom wall of the leg 11, and the connecting piece 12 is connected to the top wall of the leg 11, so that the contact area with the ground can be increased, the stability of the leg 11 can be improved, and the stability of the support 1 can be further improved.

[0035] Optionally, the support 1 further comprises a reinforcing piece 14, two ends of the reinforcing piece 14 are connected to the bottom plate 13 and the leg 11 respectively, which can improve the firmness of the connection between the bottom plate 13 and the leg 11. Further, the reinforcing piece 14 is a right-angled triangular plate, and two right-angled edges of the triangular plate are welded to the bottom plate 13 and the leg 11 respectively.

[0036] Optionally, the width of the bottom plate 13 gradually decreases in the direction from the outer edge of the flange 3 to the center of the flange 3. Specifically, the bottom plate 13 is wider at the outside and narrower at the inside, and points to the center of the flange 3, the circular surface where the two bottom plates 13 are located is concentric with the flange 3, so that the center of gravity of the support 1 can be located between the two bottom plates 13, the stability of the support 1 can be improved, and at the same time, the center of gravity of the overall structure can be ensured to be located between the two bottom plates 13 when supporting the cleaning device, so that the stability of the overall structure can be ensured.

[0037] Optionally, the mounting piece 2 comprises two vertical plates 21, a horizontal plate 22 and a frame 23, the two vertical plates 21 are arranged in a spaced manner, two ends of the horizontal plate 22 are connected to the side walls of the two vertical plates 21 respectively, the bottom walls of the two vertical plates 21 are connected to the top wall of the support 1, the frame 23 is connected to the top walls of the two vertical plates 21 and the top wall of the horizontal plate 22 at the same time, and the flange 3 can be embedded in the frame 23. Specifically, the vertical plate 21, the horizontal plate 22 and the frame 23 are fixed by welding, so that the stability of the mounting piece 2 can be ensured, and at the same time, the flange 3 and the frame 23 can be detachably connected, the flange 3 can be replaced according to different pressure vessels, and the versatility of the device can be improved.

[0038] Further, the flange 3 is fixed between the frame 23 by bolt connection, and the flange 3 can be removed from the frame 23 after the bolt is removed.

[0039] Still further, the frame 23 is annular, the arc length of the outer edge of the frame 23 is slightly larger than the arc length of the outer edge of the flange 3, and the arc length of the inner edge of the frame 23 is slightly larger than the arc length of the inner edge of the flange 3, so that the flange 3 can be smoothly embedded into the frame 23.

[0040] Optionally, the simulation device further comprises a plurality of reinforcing plates 5, one end of one part of the reinforcing plates 5 is connected to the vertical plate 21 and the other end is connected to the frame 23, and one end of another part of the reinforcing plates 5 is connected to the vertical plate 21 and the other end is connected to the horizontal plate 22. Specifically, the reinforcing plate 5 is arc-shaped, in the embodiment, the vertical plate 21 and the frame 23 are fixed by welding through four reinforcing plates 5, and one vertical plate 21 and the horizontal plate 22 are fixed by welding through four reinforcing plates 5. Of course, in other embodiments, the number and arrangement of the reinforcing plates 5 are determined according to actual conditions, which will not be described here.

[0041] Optionally, in the embodiment, the arc angle of the flange 3 is 72°, the diameters of the inner circle and the outer circle of the flange 3 are consistent with the diameters of the inner circle and the outer circle of the flange 3 of the on-site reactor pressure vessel, the flange 3 is in a horizontal state, the flange 3 is provided with nine through holes 31, the diameters and positions of the through holes 31 are consistent with the main bolt holes of the on-site reactor pressure vessel, the bolt hole sleeve 4 is in a vertical state and perpendicular to the flange 3, the bolt hole sleeve 4 is welded on the flange 3 and is directly below the through hole 31, the bolt hole sleeve 4 is internally threaded, and the specification and depth of the bolt hole sleeve 4 are consistent with the main bolt holes of the on-site reactor pressure vessel. Of course, in other embodiments, the arc angle of the flange 3, the number and arrangement of the through holes 31 are determined according to actual conditions, which will not be described here.

[0042] In addition, the above is only a preferred embodiment of the present application and the technical principle applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the appended claims.

Claims

1. A pressure vessel main bolt hole simulation device for testing a main bolt hole cleaning device, characterized by, The utility model relates to a flange simulation device, including: Support (1), mounting (2), flange (3) and a plurality of bolt hole sleeve (4), mounting (2) is arranged in support (1), flange (3) is detachably connected with mounting (2), flange (3) is provided with a plurality of through -hole (31), a plurality of through -hole (31) are correspondingly arranged with a plurality of bolt hole sleeve (4), a plurality of bolt hole sleeve (4) are connected in the bottom wall of flange (3) along the circumference of flange (3) and are communicated with through -hole (31), and the threaded hole is arranged in bolt hole sleeve (4), bolt hole sleeve (4) is used for simulating main bolt hole, and the cleaning device can clean bolt hole sleeve (4).

2. A pressure vessel main bolt hole simulation device according to claim 1, characterized in that, The support (1) includes two legs (11) and a connecting member (12), the two legs (11) are spaced apart, and the two ends of the connecting member (12) are connected to the two legs (11), respectively.

3. A pressure vessel main bolt hole simulation device according to claim 2, characterized in that, The leg (11) is a stainless steel or carbon steel piece.

4. The pressure vessel main bolt hole simulation device of claim 2, wherein, The connecting member (12) is a rectangular box.

5. A pressure vessel main bolt hole simulation device according to claim 4, wherein The front and rear sides of the connecting member (12) are both n-shaped plates, and the left and right sides of the connecting member (12) are both provided with rectangular openings.

6. A pressure vessel main bolt hole simulation device according to claim 2, wherein The support (1) further includes two bottom plates (13), the two bottom plates (13) are correspondingly arranged with the two legs (11), the bottom plate (13) is connected to the bottom wall of the leg (11), and the connecting member (12) is connected to the top wall of the leg (11).

7. A pressure vessel main bolt hole simulation device according to claim 6, wherein In the direction from the outer edge of the flange (3) to the center of the flange (3), the width of the bottom plate (13) gradually decreases.

8. The pressure vessel main bolt hole simulation device of claim 1, wherein, The mounting (2) includes two vertical plates (21), a horizontal plate (22), and a frame (23), the two vertical plates (21) are spaced apart, the two ends of the horizontal plate (22) are connected to the side walls of the two vertical plates (21), respectively, the bottom walls of the two vertical plates (21) are connected to the top wall of the support (1), the frame (23) is connected to the top walls of the two vertical plates (21) and the top wall of the horizontal plate (22), and the flange (3) can be embedded in the frame (23).

9. A pressure vessel main bolt hole simulation device according to claim 8, wherein, The simulation device further includes a plurality of reinforcing plates (5), wherein a part of the reinforcing plates (5) are connected between the vertical plates (21) and the frame (23), and another part of the reinforcing plates (5) are connected between the vertical plates (21) and the horizontal plate (22).

10. A pressure vessel main bolt hole simulation device according to any one of claims 1 to 9, characterized in that, The arc angle of the flange (3) is 72°.

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