Shield wall through duct and nuclear facility building

Abstract

This invention discloses a shielded wall penetrating pipe and nuclear facility building, enabling detectors to enter and exit the shielded room during the operation of process equipment without compromising the shielding effect. The shielded wall penetrating pipe includes a pipe body. The pipe body is embedded within the shielding wall of the shielded room. A first end of the pipe body communicates with the interior of the shielded room, and a second end communicates with the exterior of the shielded room, allowing detectors to enter and exit the shielded room through the pipe body. The pipe body is helical in shape, and its bending angle satisfies the condition that rays entering the pipe body from its first end in any direction all strike the shielding wall.

Description

Technical Field

[0001] This invention relates to the field of nuclear facility technology, and in particular to a shielded wall through-pipe and nuclear facility building. Background Technology

[0002] Some process rooms (shielded rooms) inside nuclear facilities such as radioactive laboratories, nuclear power plants, and reprocessing plants are radioactive. These rooms use shielding walls (usually more than one meter thick) to ensure radiation protection safety in the personnel operating areas (outside the shielding walls). In order to transmit various measurement signals from inside the shielding room to the outside of the shielding walls, through-ducts need to be installed on the shielding walls so that detectors can be pushed through the through-ducts to the process equipment in the room for detection, and the measurement signals are transmitted to the outside of the shielding room via cables.

[0003] like Figure 1 As shown, the commonly used method in engineering is a straight sleeve 2 with a shielding plug 1. The straight sleeve 2 with the shielding plug 1 can facilitate the passage of the detector, but in order to prevent the straight sleeve 2 from damaging the shielding effect of the shielding wall 4, the shielding plug 1 cannot be removed during the operation of the process equipment in the shielding room, and thus the detector cannot be taken out of the shielding room for inspection and maintenance. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the above-mentioned shortcomings of the prior art by providing a shielded wall that penetrates pipelines and nuclear facility buildings, which enables detectors to enter and exit the shielded room during the operation of process equipment in the shielded room without compromising the shielding effect of the shielded room.

[0005] In a first aspect, embodiments of the present invention provide a shielded wall penetrating pipe, which includes a pipe body. The pipe body is embedded within the shielded wall of a shielded room. A first end of the pipe body communicates with the interior of the shielded room, and a second end of the pipe body communicates with the exterior of the shielded room, allowing a detector to enter and exit the shielded room through the pipe body. The pipe body is spiral-shaped, and its bending angle satisfies the condition that rays entering the pipe body from its first end in any direction all strike the shielded wall.

[0006] In some embodiments, the axis of the pipe body lies on the central plane of the shielding wall.

[0007] In some embodiments, the bending angle of the pipe body is equal to 360°.

[0008] In some embodiments, the pipe body includes a first connecting pipe, a second connecting pipe, and a third connecting pipe that are smoothly connected in sequence within the wall. The free end of the first connecting pipe forms a first end of the pipe body, and the free end of the third connecting pipe forms a second end of the pipe body. The projection of the second connecting pipe onto the first plane is symmetrical about the central plane of the shielding wall; the projections of the first connecting pipe and the third connecting pipe onto the first plane are also symmetrical about the central plane of the shielding wall. The first plane is a plane perpendicular to the axis of the pipe body.

[0009] In some embodiments, the shape of the projection of the second connecting pipe inside the wall onto the first plane is a semicircle with a radius of curvature of R; the shapes of the projections of the first connecting pipe inside the wall onto the first plane and the projections of the third connecting pipe inside the wall onto the first plane are both quarter circles with a radius of curvature of R.

[0010] In some embodiments, the shielding wall through-pipe also includes an out-of-wall pipe; the out-of-wall pipe is disposed in the shielding room and smoothly connected to the free end of the third connecting pipe inside the wall; the free end of the out-of-wall pipe extends to the target position so that the detector can move to the target position through the pipe body and the out-of-wall pipe.

[0011] In some embodiments, the shielding wall through-pipe also includes an inlet pipe; the inlet pipe is disposed outside the shielding room and smoothly connected to the free end of the first connecting pipe inside the wall.

[0012] In some embodiments, the extension direction of the outlet pipe is perpendicular to the shielding wall, and the extension direction of the inlet pipe is perpendicular to the shielding wall.

[0013] In some embodiments, the inner diameters of the first connecting pipe inside the wall, the second connecting pipe inside the wall, the third connecting pipe inside the wall, the outlet pipe, and the inlet pipe are all the same.

[0014] Therefore, this embodiment of the invention, by setting up a pipe body and embedding it within the shielding wall of the shielded room, with the first end of the pipe body connected to the interior of the shielded room and the second end connected to the exterior of the shielded room, allows the detector to enter and exit the shielded room through the pipe body. Furthermore, by setting the shape of the pipe body to a spiral shape and ensuring that rays entering the pipe body from the first end in any direction all point towards the shielding wall, rays inside the shielded room are prevented from exiting to the exterior of the shielded room through the pipe body, thus preventing the pipe body from damaging the shielding effect of the shielding wall. This allows the detector to enter and exit the shielded room during the operation of the process equipment inside the shielded room, thereby enabling the inspection and maintenance of the detector during the operation of the process equipment inside the shielded room.

[0015] Secondly, embodiments of the present invention also provide a nuclear facility building, which includes a building body and the shielding wall through-pipes mentioned in the first aspect. The building body has at least one shielding room.

[0016] The aforementioned nuclear facility building has the same beneficial technical effects as the shielding wall through-pipes provided in some of the above embodiments, and will not be described again here. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of this invention, the accompanying drawings used in some embodiments of this invention will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this invention, and those skilled in the art can obtain other drawings based on these drawings. Furthermore, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this invention.

[0018] Figure 1 A structural diagram of a straight sleeve with a shielding plug provided in the prior art; Figure 2 A top view of a shielded wall penetrating a pipe provided in an embodiment of the present invention; Figure 3 This is a front view of a shielded wall through-pipe provided in an embodiment of the present invention.

[0019] Among them, 1-shielding plug; 2-straight sleeve; 3-detector; 4-shielding wall; 5-pipe body; 6-first connecting pipe inside the wall; 7-second connecting pipe inside the wall; 8-third connecting pipe inside the wall; 9-exit pipe; 10-inlet pipe. Detailed Implementation

[0020] The technical solutions in some embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided by the present invention are within the scope of protection of the present invention.

[0021] Where there is no conflict, the various embodiments of the present invention and the features thereof may be combined with each other.

[0022] As used herein, the term “and / or” includes any and all combinations of one or more related enumerated entries.

[0023] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as open-ended and encompassing, meaning "including, but not limited to." Furthermore, the specific features, structures, materials, or characteristics described may be included in any suitable manner in any one or more embodiments or examples.

[0024] In describing some embodiments, the term "connection" and its derivative expressions may be used. The term "connection" should be interpreted broadly; for example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. The embodiments of the invention described herein are not necessarily limited to the content of this document.

[0025] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and the area of ​​regions are enlarged for clarity. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the areas of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0026] Example 1: like Figure 2 and Figure 3 As shown, an embodiment of the present invention provides a shielded wall through-pipe, which is applied in a shielded room to allow external equipment to enter and exit the shielded room.

[0027] like Figure 2 and Figure 3 As shown, the shielding wall penetrates the pipe, which includes the pipe body 5. The pipe body 5 is embedded within the shielding wall 4 of the shielding room. The first end of the pipe body 5 connects to the interior of the shielding room, and the second end of the pipe body 5 connects to the exterior of the shielding room, allowing the detector 3 to enter and exit the shielding room through the pipe body 5. The pipe body 5 is spiral-shaped, and its bending angle satisfies the condition that rays entering from the first end of the pipe body 5 in any direction all strike the shielding wall 4.

[0028] For example, the shielding wall can be a reinforced concrete structure, and the pipe body 5 can be made of stainless steel or other metal materials.

[0029] For example, detector 3 is a wired detector, such as a wired temperature sensor, nuclear radiation sensor, etc.

[0030] By setting up the pipe body 5, the detector 3 can enter and exit the shielded room through the pipe body 5, thereby enabling the detector 3 to detect the corresponding parameters inside the shielded room.

[0031] By setting the shape of the pipe body 5 to a spiral shape and making the bending angle of the pipe body 5 satisfy the following: any rays entering the pipe body 5 from the first end of the pipe body 5 in any direction will be directed toward the shielding wall 4. This can prevent rays inside the shielding room from being emitted to the outside of the shielding room through the pipe body 5, ensuring the shielding effect of the shielding wall 4. This allows the detector 3 to enter and exit the shielding room during the operation of the process equipment inside the shielding room, thereby enabling the inspection and maintenance of the detector 3 during the operation of the process equipment inside the shielding room.

[0032] Understandable, combined Figure 2 and Figure 3 When the bending angle of the pipe body 5 is a constant, by setting the shape of the pipe body 5 to a spiral shape, the curvature radius of the pipe body 5 can be increased, the degree of bending of the pipe body 5 can be reduced, and interference between the detector 3 and the side wall of the pipe body 5 when the detector 3 passes through the pipe body 5 can be avoided, which would increase the difficulty of the detector 3 passing through the pipe body 5. It can also allow the pipe body 5 with the same inner diameter to pass through the detector 3 of a larger size.

[0033] Therefore, in this embodiment of the invention, by setting up a pipe body 5, which is embedded in the shielding wall 4 of the shielding room, with the first end of the pipe body 5 connected to the interior of the shielding room and the second end of the pipe body 5 connected to the exterior of the shielding room, the detector 3 can enter and exit the shielding room through the pipe body 5. Furthermore, by setting the shape of the pipe body 5 to a spiral shape and making the bending angle of the pipe body 5 satisfy the condition that rays entering the pipe body 5 from the first end of the pipe body 5 in any direction are directed toward the shielding wall 4, rays inside the shielding room can be prevented from exiting to the exterior of the shielding room through the pipe body 5, thus preventing the pipe body 5 from damaging the shielding effect of the shielding wall 4. This allows the detector 3 to enter and exit the shielding room during the operation of the process equipment inside the shielding room, thereby enabling the inspection and maintenance of the detector 3 during the operation of the process equipment inside the shielding room.

[0034] In some embodiments, such as Figure 2 and Figure 3 As shown, the axis of the pipe body 5 lies on the central plane of the shielding wall 4.

[0035] For example, the axis of the pipe body 5 can be in any direction in the central plane of the shielding wall 4.

[0036] For example, the axis of the pipe body 5 can be in the horizontal direction of the central plane of the shielding wall 4 or in the vertical direction of the central plane of the shielding wall 4.

[0037] Combination Figure 2 The pipe body 5 is spiral in shape. Understandably, through the above arrangement, the pipe body 5 can be evenly distributed on both sides of the central plane of the shielding wall 4, avoiding the pipe body 5 being concentrated on one side of the shielding wall 4 and affecting the overall strength of the shielding wall 4.

[0038] In some embodiments, combined with Figure 2 and Figure 3 The bending angle of the pipe body 5 is 360°.

[0039] Understandably, the above settings can make the openings at both ends of the pipe body 5 parallel, so that the direction of the detector 3 when entering the pipe body 5 is the same as the direction when exiting the pipe body 5, which facilitates the positioning of the detector 3 after it passes through the pipe body 5.

[0040] In some other examples, the bending angle of the pipe body 5 can also be greater than 360°, for example, it can be 400°, but the bending angle of the pipe body 5 must ensure that the detector 3 can enter the shielded chamber from the second end of the pipe body 5.

[0041] In some embodiments, such as Figure 2 and Figure 3 As shown, the pipe body 5 includes a first connecting pipe 6, a second connecting pipe 7, and a third connecting pipe 8 that are smoothly connected in sequence within the wall. The free end of the first connecting pipe 6 forms the first end of the pipe body 5, and the free end of the third connecting pipe 8 forms the second end of the pipe body 5. The projection of the second connecting pipe 7 onto a first plane is symmetrical about the central plane of the shielding wall 4; the projections of the first connecting pipe 6 and the third connecting pipe 8 onto the first plane are also symmetrical about the central plane of the shielding wall 4. The first plane is a plane perpendicular to the axis of the pipe body 5.

[0042] For example, the materials of the first connecting pipe 6, the second connecting pipe 7, and the third connecting pipe 8 inside the wall can all be stainless steel.

[0043] For example, when the axis of the pipe body 5 is vertical, the first plane is a horizontal plane.

[0044] The aforementioned "free end" refers to the end that is not connected to the second connecting pipe 7 inside the wall.

[0045] Understandably, the projection of the entire pipe body 5 on the first plane is symmetrical about the central plane of the shielding wall 4. That is, the bending angle from the free end of the first connecting pipe 6 inside the wall to the midpoint of the second connecting pipe 7 inside the wall is equal to 180°, and the bending angle from the midpoint of the second connecting pipe 7 inside the wall to the free end of the third connecting pipe 8 inside the wall is equal to 180°, thus making the overall bending angle of the pipe body 5 equal to 360°.

[0046] With the above arrangement, the pipe body 5 can be evenly distributed on both sides of the central plane of the shielding wall 4, which facilitates the design and construction of the first connecting pipe 6, the second connecting pipe 7 and the third connecting pipe 8 inside the wall.

[0047] Based on this, in some embodiments, such as Figure 2 and Figure 3 As shown, the projection of the second connecting pipe 7 inside the wall onto the first plane is a semicircle with a radius of curvature of R; the projections of the first connecting pipe 6 inside the wall onto the first plane and the projections of the third connecting pipe 8 inside the wall onto the first plane are both quarter circles with a radius of curvature of 2R.

[0048] For example, the second connecting pipe 7 inside the wall is located at the center of the second connecting pipe 7 inside the wall, and the first connecting pipe 6 inside the wall and the third connecting pipe 8 inside the wall are both located above the second connecting pipe 7 inside the wall, and extend to the inner and outer sides of the shielding wall 4 respectively after bending.

[0049] For example, the value of R is slightly less than half the thickness of the shielding wall 4. This allows the radius of curvature of the second connecting pipe 7 inside the wall to be as large as possible while ensuring that the second connecting pipe 7 is buried inside the shielding wall 4. This minimizes the degree of bending of the second connecting pipe 7 and reduces the difficulty for the detector 3 to pass through it. At the same time, this also allows the radii of curvature of the first connecting pipe 6 and the third connecting pipe 8 inside the wall to be as large as possible, thereby minimizing the degree of bending of the first connecting pipe 6 and the third connecting pipe 8 and reducing the difficulty for the detector 3 to pass through them.

[0050] With the above settings, there are no straight pipe sections in the first connecting pipe 6, the second connecting pipe 7, and the third connecting pipe 8 inside the wall. Furthermore, the bending angles of the first connecting pipe 6 and the third connecting pipe 8 inside the wall reach 90°, and the bending angle of the second connecting pipe 7 inside the wall reaches 180°, which facilitates the design and construction of the first connecting pipe 6, the second connecting pipe 7, and the third connecting pipe 8 inside the wall.

[0051] In some embodiments, such as Figure 2 and Figure 3As shown, the shielding wall through-pipe also includes an out-of-wall pipe 9. The out-of-wall pipe 9 is located inside the shielding room and is smoothly connected to the free end of the third connecting pipe 8 inside the wall; the free end of the out-of-wall pipe 9 extends to the target position so that the detector 3 can move to the target position through the pipe body 5 and the out-of-wall pipe 9.

[0052] For example, the wall-exit pipe 9 is made of stainless steel and is welded to the free end of the third connecting pipe 8 inside the wall. The wall-exit pipe 9 can be fixed in the shielded room by a bracket.

[0053] For example, the target location mentioned above could be the process equipment inside a shielded room.

[0054] With the above setup, when the detector 3 passes through the third connecting pipe 8 inside the wall, the movement of the detector 3 can continue to be guided through the exit pipe 9.

[0055] In some embodiments, such as Figure 2 and Figure 3 As shown, the shielding wall through-pipe also includes an inlet pipe 10. The inlet pipe 10 is located outside the shielding room and is smoothly connected to the free end of the first connecting pipe 6 inside the wall.

[0056] For example, the wall-entry pipe 10 is made of stainless steel and is welded to the free end of the first connecting pipe 6 inside the wall. The wall-entry pipe 10 can be fixed to the outside of the shielding room by a bracket.

[0057] With the above settings, when the detector 3 needs to enter the first connecting pipe 6 inside the wall, the detector 3 can be guided through the wall entry pipe 10 to facilitate the detector 3's entry into the first connecting pipe 6 inside the wall.

[0058] In some embodiments, such as Figure 2 and Figure 3 As shown, the extension direction of the outlet pipe 9 is perpendicular to the shielding wall 4, and the extension direction of the inlet pipe 10 is perpendicular to the shielding wall 4.

[0059] The above settings facilitate the installation and positioning of the wall-exit pipe 9 and the wall-entry pipe 10.

[0060] In some embodiments, the inner diameters of the first connecting pipe 6, the second connecting pipe 7, the third connecting pipe 8, the outlet pipe 9, and the inlet pipe 10 are all the same.

[0061] By setting up the above, the dimensional changes between adjacent connections in the first connecting pipe 6, the second connecting pipe 7, the third connecting pipe 8, the outlet pipe 9, and the inlet pipe 10 can be reduced, thus making the detector 3 move more smoothly in the shielded wall through the pipe.

[0062] Example 2: This invention also provides a nuclear facility building, which includes a building body and a shielding wall through-pipe as described in Embodiment 1. The building body has at least one shielding room.

[0063] For example, a process equipment is installed inside the shielded room. During the operation of the process equipment, it may be necessary to monitor the radiation level inside the shielded room.

[0064] With the above setup, a specific detector 3 can be sent into the shielded room through a pipe penetrating the shielded wall during the operation of the process equipment inside the shielded room, so as to detect the target parameters inside the shielded room. The detector 3 can also be removed during the operation of the process equipment inside the shielded room, which facilitates the inspection and maintenance of the detector 3.

[0065] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A shielding wall penetrating a pipe, characterized in that, Including the pipe body (5); The pipe body (5) is buried in the shielding wall (4) of the shielding room. The first end of the pipe body (5) is connected to the inside of the shielding room, and the second end of the pipe body (5) is connected to the outside of the shielding room, so that the detector (3) can enter and exit the shielding room through the pipe body (5). The pipe body (5) is spiral in shape, and the bending angle of the pipe body (5) satisfies that any ray entering the pipe body (5) from the first end of the pipe body (5) in any direction will be directed toward the shielding wall (4).

2. The shielding wall penetrating pipe according to claim 1, characterized in that, The axis of the pipe body (5) lies on the central plane of the shielding wall (4).

3. The shielding wall penetrating pipe according to claim 2, characterized in that, The bending angle of the pipe body (5) is 360°.

4. The shielding wall penetrating pipe according to claim 3, characterized in that, The pipe body (5) includes a first connecting pipe (6), a second connecting pipe (7) and a third connecting pipe (8) that are smoothly connected in sequence within the wall. The free end of the first connecting pipe (6) forms the first end of the pipe body (5), and the free end of the third connecting pipe (8) forms the second end of the pipe body (5). The projection of the second connecting pipe (7) inside the wall onto the first plane is symmetrical about the central plane of the shielding wall (4); the projection of the first connecting pipe (6) inside the wall onto the first plane, and the projection of the third connecting pipe (8) inside the wall onto the first plane, are symmetrical about the central plane of the shielding wall (4). The first plane is a plane perpendicular to the axis of the pipe body (5).

5. The shielding wall penetrating pipe according to claim 4, characterized in that, The projection of the second connecting pipe (7) inside the wall onto the first plane is a semi-circle with a radius of curvature of R; the projection of the first connecting pipe (6) inside the wall onto the first plane and the projection of the third connecting pipe (8) inside the wall onto the first plane are both quarter circles with a radius of curvature of 2R.

6. The shielding wall penetrating pipe according to claim 4 or 5, characterized in that, It also includes pipes extending out of the wall (9); The wall-exit pipe (9) is installed in the shielded room and is smoothly connected to the free end of the third connecting pipe (8) inside the wall; the free end of the wall-exit pipe (9) extends to the target position so that the detector (3) can move to the target position through the pipe body (5) and the wall-exit pipe (9).

7. The shielding wall penetrating pipe according to claim 6, characterized in that, It also includes in-wall pipes (10); The wall-entry pipe (10) is located outside the shielding room and is smoothly connected to the free end of the first connecting pipe (6) inside the wall.

8. The shielding wall penetrating pipe according to claim 7, characterized in that, The extension direction of the outlet pipe (9) is perpendicular to the shielding wall (4), and the extension direction of the inlet pipe (10) is perpendicular to the shielding wall (4).

9. The shielding wall penetrating pipe according to claim 8, characterized in that, The inner diameters of the first connecting pipe (6), the second connecting pipe (7), the third connecting pipe (8), the outlet pipe (9), and the inlet pipe (10) are all the same.

10. A nuclear facility building, characterized in that, include: The main building of the plant has at least one shielded room; and, The shielding wall according to any one of claims 1-9 penetrates the pipe.

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