Neutron shielding door

Abstract

The neutron shielding door comprises a stand column, a door leaf and a shielding box, the stand column is arranged on one side of a wall, the door leaf correspondingly covers one side of a door opening, and the edge of the side, facing the stand column, of the door leaf is connected with the stand column in a matched mode; the shielding box is movably arranged on the edge of the bottom side of the door leaf. When the door leaf is matched with the door opening to be closed to one side wall face of the wall, the top side edge of the door leaf, the left side edge of the door leaf and the right side edge of the door leaf abut against the wall face of the wall on the top side of the door opening, the wall face of the wall on the left side of the door opening and the wall face of the wall on the right side of the door leaf in a one-to-one correspondence mode respectively. At the moment, the shielding box can descend relative to the bottom side edge of the door leaf until the bottom side surface of the shielding box abuts against the ground. The enough gap is reserved between the door leaf and the ground to achieve stable opening and closing of the door leaf, meanwhile, the shielding box blocks the gap in the bottom side of the door leaf in the closed state of the door leaf, and neutron rays on the inner side of the neutron shielding door are further prevented from penetrating through the door body.

Description

Technical Field

[0001] The utility model relates to the technical field of shielding doors, in particular to a neutron shielding door. Background Art

[0002] Neutron shielding doors are shielding devices specifically designed to prevent the leakage of neutron radiation. They are primarily used in nuclear reactors, accelerators, radioactive laboratories, and other locations requiring neutron radiation protection. Neutron radiation has strong penetrating power, necessitating specialized shielding measures to ensure the safety of the work area or the external environment. Neutron shielding doors are typically constructed from multiple layers of materials to effectively attenuate and absorb neutron energy. These materials typically include hydrogen-containing materials, high-atomic-sequence materials, boron, or lithium. Based on this, neutron shielding doors offer multiple shielding effects. By combining multiple materials, they can effectively shield neutron radiation of varying energies, ensuring safety. Shielding doors are typically designed to be thick and sturdy to ensure they can withstand prolonged radiation exposure without damage. Some neutron shielding doors are equipped with automated opening and closing systems for efficient operation.

[0003] In order to ensure the stability and smoothness of opening and closing of existing swing-type neutron shielding doors, the bottom edge of the door leaf usually leaves a certain distance from the ground to avoid friction or collision between the door leaf and the ground, which may cause inconvenience or physical damage. However, the above-mentioned ground clearance can easily cause the shielding performance of the neutron shielding door to deteriorate, and neutron rays inside the shielding door can easily be emitted through the gap to the outside of the door, causing leakage, posing a safety hazard. Utility Model Content

[0004] Based on this, it is necessary to provide a neutron shielding door to address the technical problem that the existing flat-hinged neutron shielding door has insufficient shielding performance.

[0005] A neutron shielding door is installed in cooperation with one side of a wall with a preset storage door opening, and the neutron shielding door includes a column, a door leaf and a shielding box, wherein the column is set on one side of the wall, the door leaf corresponds to covering one side of the door opening, and the edge of the door leaf facing the column is connected to the column, so that the door leaf can be movably installed to the side surface of the column, and the door leaf can swing within a preset angle range with the column as the rotation axis; the shielding box is movably set at the bottom edge of the door leaf; wherein, when the door leaf cooperates with the door opening to close to the wall surface of one side of the wall, the top edge of the door leaf, the left edge of the door leaf and the right edge of the door leaf respectively abut against the wall surface on the top side of the door opening, the wall surface on the left side of the door opening and the wall surface on the right side of the door leaf; at this time, the shielding box can descend relative to the bottom edge of the door leaf until the bottom surface of the shielding box abuts against the ground.

[0006] In one embodiment, the above-mentioned shielding box includes a box body and several first hinge mechanisms, the box body is movably arranged at the bottom of one side surface of the door leaf, and, in an initial state, the bottom side surface of the box body is in contact with the ground; the several first hinge mechanisms are arranged on the top side surface of the box body, and one end of each first hinge mechanism is connected to the top side surface of the box body, and the other end of the first hinge mechanism is connected to the corresponding side surface of the door leaf.

[0007] In one embodiment, the above-mentioned shielding box also includes an operating rod, a second hinge mechanism and a limit unit, the limit unit is arranged on the top side of the box body and connected to the corresponding side surface of the door leaf; one end of the operating rod is hingedly connected to one side surface of the box body through the second hinge mechanism, and the other end of the operating rod extends toward the top side and is connected to the limit unit.

[0008] In one embodiment, the above-mentioned limiting unit is configured as a limiting groove, and one end of the operating rod connected to the limiting unit is slidably engaged with the limiting groove.

[0009] In one embodiment, a snap-in slot is provided at the top of the above-mentioned limiting slot, and when the operating rod is lifted to a preset height, it can be snap-into the snap-in slot.

[0010] In one embodiment, the above-mentioned operating rod includes a gripping portion and a first connecting portion, and the gripping portion and the first connecting portion are respectively arranged at both ends of the operating rod; wherein, the gripping portion is cooperatively connected with the limiting unit; and the first connecting portion is hingedly connected to the box body through a second hinge mechanism.

[0011] In one embodiment, the gripping portion is slidably engaged with the limiting slot and the engaging slot.

[0012] In one embodiment, the operating lever further includes a second connecting portion and a buffer portion, wherein one end of the second connecting portion is connected to the grip portion, the other end of the second connecting portion is connected to one end of the buffer portion, and the other end of the buffer portion is connected to the first connecting portion.

[0013] In one embodiment, the above-mentioned buffer portion is configured as a sleeve structure, and the two ends of the buffer portion are respectively sleeved on the corresponding end portions of the first connecting portion and the corresponding end portions of the second connecting portion, and the side surface of the first connecting portion and the side surface of the second connecting portion are respectively slidably connected to the inner wall surface of the buffer portion.

[0014] In one of the embodiments, the door leaf is further provided with a flexible barrier, which is arranged on the bottom surface of the door leaf, and the bottom edge of the flexible barrier abuts against the ground.

[0015] In one embodiment, the door leaf is further provided with a sealing strip, which is provided on the top edge, left edge and right edge of the door leaf. When the door leaf is in a closed state, the sealing strip abuts against the wall surface.

[0016] In one embodiment, the above-mentioned column is provided with a plurality of third hinge mechanisms, which are arranged on the side of the column facing the door leaf, and the column is hingedly connected to the corresponding side edges of the door leaf through the plurality of third hinge structures.

[0017] The above-mentioned neutron shielding door is respectively abutted against the wall surface on the top side of the door opening, the wall surface on the left side of the door opening, and the wall surface on the right side of the door leaf through the top edge of the door leaf, the left edge of the door leaf, and the right edge of the door leaf, so as to avoid the formation of gaps between the top side and the left and right side edges of the door leaf and the wall, thereby minimizing the possibility of neutron rays penetrating from the gap between the door leaf and the wall to the outside of the neutron shielding door; at this time, the shielding box can be lowered relative to the bottom edge of the door leaf until the bottom surface of the shielding box abuts the ground, so that the shielding box can block the gap between the bottom edge of the door leaf and the ground. Based on this, while ensuring that there is enough gap between the door leaf and the ground to achieve stable opening and closing of the door leaf, the shielding box blocks the gap on the bottom side of the door leaf when the door leaf is closed, further preventing neutron rays on the inside of the neutron shielding door from penetrating the door body, greatly improving the shielding performance of the neutron shielding door and improving its shielding performance in practical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a neutron shielding door in one embodiment;

[0019] Figure 2 is a schematic structural diagram of a neutron shielding door in one embodiment;

[0020] Figure 3 for Figure 1 A schematic cross-sectional view of the AA portion of the embodiment shown;

[0021] Figure 4 for Figure 1 A schematic cross-sectional structural diagram of the BB portion in the illustrated embodiment;

[0022] Figure 5 for Figure 3 An enlarged structural diagram of part M in the illustrated embodiment;

[0023] Figure 6 for Figure 4 Schematic diagram of the enlarged structure of part N in the embodiment shown. DETAILED DESCRIPTION

[0024] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0027] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0030] See also Figures 1 to 6The utility model discloses a neutron shielding door, which is installed on one side of a wall 100 with a preset storage door opening a, and the neutron shielding door includes a column 200, a door leaf 300 and a shielding box 400, wherein the column 200 is arranged on one side of the wall 100, the door leaf 300 covers one side of the door opening a, and the edge of the door leaf 300 facing the column 200 is connected to the column 200, so that the door leaf 300 can be movably installed to The door leaf 300 is mounted on the side surface of the column 200, and the door leaf 300 can swing within a preset angle range with the column 200 as the rotation axis to realize the closing and opening action between the door leaf 300 and the door opening a; the shielding box 400 is movably arranged on the bottom edge of the door leaf 300; wherein, when the door leaf 300 cooperates with the door opening a to close to the wall surface of one side of the wall 100, the top edge of the door leaf 300, the left edge of the door leaf 300 and the right edge of the door leaf 300 are respectively aligned with the wall surface of the wall 100 on the top side of the door opening a 100 , thereby preventing neutron rays from penetrating the gap between the door leaf 300 and the wall 100 to the outside of the neutron shielding door. At this time, the shielding box 400 can be lowered relative to the bottom edge of the door leaf 300 until the bottom surface of the shielding box 400 abuts against the ground, so that the shielding box 400 can block the gap between the bottom edge of the door leaf 300 and the ground. Based on this, while ensuring that there is enough gap between the door leaf 300 and the ground to achieve stable opening and closing of the door leaf 300, the shielding box 400 blocks the gap on the bottom side of the door leaf 300 when the door leaf 300 is closed, further preventing neutron rays on the inside of the neutron shielding door from penetrating the door body, greatly improving the shielding performance of the neutron shielding door and improving its shielding performance in practical applications.

[0031] Furthermore, the shielding box 400 includes a box body 410 and a plurality of first hinge mechanisms 420. The box body 410 is movably arranged at the bottom of one side surface of the door leaf 300, and, in the initial state, the bottom side surface of the box body 410 is in contact with the ground; a plurality of first hinge mechanisms 420 are arranged on the top side surface of the box body 410, and one end of each first hinge mechanism 420 is connected to the top side surface of the box body 410, and the other end of the first hinge mechanism 420 is connected to the corresponding side surface of the door leaf 300, so that the box body 410 can be moved by a plurality of The first hinge mechanism 420 swings toward the top side at a preset angle, causing the bottom surface of the box body 410 to disengage from the ground. At this time, there is a gap of a certain width between the door leaf 300 and the ground, and the door leaf 300 can swing unimpeded relative to the ground; when the door leaf 300 swings to the target position, such as when it cooperates with the wall 100 to close the door opening a, the box body 410 can swing toward the bottom side to return to its initial state. At this time, the bottom surface of the box body 410 is in contact with the ground again, thereby ensuring the shielding performance of the neutron shielding door against neutron rays when it is closed.

[0032] Furthermore, the shielding box 400 further includes an operating rod 430, a second hinge mechanism 440, and a limiting unit 450. The limiting unit 450 is disposed on the top side of the box body 410 and connected to the corresponding side surface of the door leaf 300. One end of the operating rod 430 is hingedly connected to a side surface of the box body 410 through the second hinge mechanism 440, and the other end of the operating rod 430 extends toward the top side and is coupled to the limiting unit 450. Specifically, the limiting unit 450 is configured as a limiting slot b. One end of the operating rod 430 connected to the limiting unit 450 slidably engages with the limiting slot b. Thus, a pedestrian can pull the box body 410 through the operating rod 430, causing the box body 410 to swing upward toward the top side. At this time, the end of the operating rod 430 connected to the limiting unit 450 slides along the limiting slot b to a preset height and then snaps into the top side end of the limiting slot b, thereby maintaining the box body 410 in a raised state. More specifically, a snap-fitting slot c is provided at the top of the limiting slot b. When the operating rod 430 is lifted to a preset height, it can be snap-fitted into the snap-fitting slot c, thereby maintaining the lifted state of the box body 410.

[0033] Furthermore, the operating lever 430 includes a gripping portion 431 and a first connecting portion 432, which are respectively disposed at both ends of the operating lever 430. The gripping portion 431 is coupled to the limiting unit 450. The first connecting portion 432 is hingedly connected to the box body 410 via a second hinge mechanism 440. Thus, a pedestrian can use the gripping portion 431 to operate the first connecting portion 432 to pull up the box body 410. Specifically, the gripping portion 431 slidably engages with the limiting slot b and the engaging slot c, allowing the gripping portion 431 to slide and rise along the limiting slot b.

[0034] Furthermore, the operating rod 430 further includes a second connecting portion 433 and a buffer portion 434. One end of the second connecting portion 433 is connected to the grip portion 431, and the other end of the second connecting portion 433 is connected to one end of the buffer portion 434. The other end of the buffer portion 434 is connected to the first connecting portion 432. Thus, during the pulling and releasing of the operating rod 430, the buffer portion 434 can cushion the impact force between the operating rod 430, the limiting unit 450, and the box body 410 to a certain extent, thereby reducing mechanical damage. Specifically, the buffer portion 434 is configured as a sleeve structure, with its two ends respectively sleeved over the corresponding ends of the first connecting portion 432 and the corresponding ends of the second connecting portion 433. The side surfaces of the first connecting portion 432 and the side surfaces of the second connecting portion 433 are respectively slidably connected to the inner wall surface of the buffer portion 434. In actual application, the buffer portion 434 can cushion the gap between the first connecting portion 432 and the second connecting portion 433 by using one of the buffering methods such as air pressure, hydraulic pressure, and damping.

[0035] Furthermore, the door leaf 300 is provided with a flexible barrier 310, which is disposed on the bottom surface of the door leaf 300. The bottom edge of the flexible barrier 310 abuts the ground, thereby ensuring the sealing performance of the neutron shielding door when the door leaf 300 is closed. Based on this, the door leaf 300 is also provided with sealing strips 320, which are disposed on the top, left, and right edges of the door leaf 300. When the door leaf 300 is in the closed state, the sealing strips 320 abut the surface of the wall 100, thereby further ensuring the sealing performance of the neutron shielding door when closed.

[0036] Furthermore, the column 200 is provided with a plurality of third hinge mechanisms 210, which are arranged on the side of the column 200 facing the door leaf 300, and the column 200 is hingedly connected to the corresponding side edges of the door leaf 300 through the plurality of third hinge structures, thereby achieving stable swinging between the door leaf 300 and the column 200.

[0037] In summary, the neutron shielding door disclosed by the present invention is respectively abutted against the wall surface on the top side of the door opening, the wall surface on the left side of the door opening, and the wall surface on the right side of the door leaf through the top edge of the door leaf, the left edge of the door leaf, and the right edge of the door leaf, so as to avoid the formation of gaps between the top side and the left and right side edges of the door leaf and the wall, thereby preventing neutron rays from penetrating to the outside of the neutron shielding door through the gap between the door leaf and the wall to the greatest extent; at this time, the shielding box can be lowered relative to the bottom edge of the door leaf until the bottom surface of the shielding box abuts against the ground, so that the shielding box can block the gap between the bottom edge of the door leaf and the ground. Based on this, while ensuring that there is enough gap between the door leaf and the ground to achieve stable opening and closing of the door leaf, the shielding box blocks the gap on the bottom side of the door leaf when the door leaf is closed, further preventing neutron rays on the inside of the neutron shielding door from penetrating the door body, greatly improving the shielding performance of the neutron shielding door, and improving its shielding performance in practical applications.

[0038] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A neutron shielding door, characterized in that: The neutron shielding door is installed on one side of a wall with a preset storage door opening, and the neutron shielding door includes a column, a door leaf and a shielding box, wherein the column is arranged on one side of the wall, the door leaf corresponds to covering one side of the door opening, and the door leaf is connected to the column on one side edge facing the column, so that the door leaf can be movably installed on the side surface of the column, and the door leaf can swing within a preset angle range with the column as the rotating axis; the shielding box is movably arranged on the bottom edge of the door leaf; wherein, when the door leaf cooperates with the door opening to close to the wall surface of one side of the wall, the top edge of the door leaf, the left edge of the door leaf and the right edge of the door leaf respectively abut against the wall surface on the top side of the door opening, the wall surface on the left side of the door opening and the wall surface on the right side of the door leaf; at this time, the shielding box can descend relative to the bottom edge of the door leaf until the bottom surface of the shielding box abuts against the ground.

2. The neutron shielding door according to claim 1, characterized in that: The shielding box includes a box body and several first hinge mechanisms, the box body is movably arranged at the bottom of one side surface of the door leaf, and in an initial state, the bottom side surface of the box body is in contact with the ground; several first hinge mechanisms are arranged on the top side surface of the box body, and one end of each first hinge mechanism is connected to the top side surface of the box body, and the other end of the first hinge mechanism is connected to the corresponding side surface of the door leaf.

3. The neutron shielding door according to claim 2, characterized in that: The shielding box also includes an operating rod, a second hinge mechanism and a limit unit, wherein the limit unit is arranged on the top side of the box body and connected to the corresponding side surface of the door leaf; one end of the operating rod is hingedly connected to one side surface of the box body through the second hinge mechanism, and the other end of the operating rod extends toward the top side and is connected to the limit unit.

4. The neutron shielding door according to claim 3, characterized in that: The limiting unit is configured as a limiting groove, and one end of the operating rod connected to the limiting unit is slidably engaged with the limiting groove.

5. The neutron shielding door according to claim 4, characterized in that: A clamping groove is provided at the top end of the limiting groove, and when the operating rod is lifted to a preset height, it can be clamped into the clamping groove.

6. The neutron shielding door according to claim 5, characterized in that: The operating rod includes a gripping portion and a first connecting portion, and the gripping portion and the first connecting portion are respectively arranged at both ends of the operating rod; wherein, the gripping portion is cooperatively connected with the limiting unit; and the first connecting portion is hingedly connected to the box body through the second hinge mechanism.

7. The neutron shielding door according to claim 6, characterized in that: The holding portion is slidably matched with the limiting groove and the clamping groove.

8. The neutron shielding door according to claim 7, characterized in that: The operating rod further includes a second connecting portion and a buffer portion, wherein one end of the second connecting portion is connected to the grip portion, the other end of the second connecting portion is connected to one end of the buffer portion, and the other end of the buffer portion is connected to the first connecting portion.

9. The neutron shielding door according to claim 8, characterized in that: The buffer portion is configured as a sleeve structure, and both ends of the buffer portion are respectively sleeved on the corresponding ends of the first connecting portion and the corresponding ends of the second connecting portion, and the side surfaces of the first connecting portion and the side surfaces of the second connecting portion are respectively slidably connected to the inner wall surfaces of the buffer portion.

10. The neutron shielding door according to claim 9, characterized in that: The door leaf is further provided with a flexible blocking member, which is arranged on the bottom side surface of the door leaf, and the bottom side edge of the flexible blocking member abuts against the ground.

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