Hospital building anti-radiation structure system

Abstract

The application provides a hospital building anti-radiation structure system, which comprises a multilayer anti-radiation wall body, the multilayer anti-radiation wall body comprises an inner layer concrete wall, an intermediate interlayer and an outer layer concrete wall, the intermediate interlayer is filled with a radiation shielding material, the surface of the inner layer concrete wall is provided with an anti-radiation layer, and each corner of the inner side of the multilayer anti-radiation wall body is provided with a chamfer.The wall body structure is designed into a multilayer structure in the technical scheme, not only the intermediate interlayer between the inner and outer layer concrete walls is filled with the radiation shielding material, but also the surface of the inner layer concrete wall is further provided with the anti-radiation layer, so that multi-layer protection is realized, the overflow of radiation is effectively blocked, efficient shielding of radiation is realized, and the reflection and scattering of radiation are reduced by setting the chamfer at each corner in the wall body, so that the reflection angle of radiation is reduced, the protection effect is improved, and the like.

Description

Technical Field

[0001] This invention relates to the field of radiation protection technology for hospital buildings, and in particular to a radiation protection structural system for hospital buildings. Background Technology

[0002] Hospitals are typical working environments with radiation sources. Factors affecting radiation protection in hospitals include radiation sources, radiation pathways, and the duration of personnel exposure. Factors affecting radiation sources are relatively few, mainly voltage, current, working time, and working methods. Radiation pathways and the duration of personnel exposure are the main factors affecting protection, and it is necessary to take measures to reduce radiation concentration through civil engineering structures and protective facilities.

[0003] With the continuous innovation of medical equipment and the introduction of new technologies, hospitals are using more and more radiation-emitting devices, leading to increasingly higher requirements for radiation protection structures. This radiation can cause invisible harm to medical staff and patients, especially patients outdoors. While doctors indoors wear protective clothing, patients outdoors do not. Therefore, if the radiation shielding wall cannot effectively block radiation, it will cause great harm to the health of patients and medical staff. Summary of the Invention

[0004] The purpose of this invention is to provide a radiation protection structure system for hospital buildings, which aims to provide a compact structure with good radiation protection effect to ensure the safety of personnel inside the hospital.

[0005] This invention provides a radiation protection structural system for hospital buildings, including a multi-layer radiation protection wall. The multi-layer radiation protection wall includes an inner concrete wall, an intermediate interlayer, and an outer concrete wall. The intermediate interlayer is filled with radiation shielding material. The surface of the inner concrete wall is provided with a radiation protection layer. Each corner inside the multi-layer radiation protection wall is chamfered.

[0006] Furthermore, the radiation shielding layer is a lead plate, radiation shielding mortar, or barium cement applied in multiple layers.

[0007] Furthermore, the intermediate interlayer includes two rows of interlocking support components, with a bent radiation shielding material sandwiched between the two rows of support components. Each support component includes several trapezoidal structural members arranged in parallel and fixedly connected in sequence. At the corner of the intermediate interlayer, there is an anisotropic structural member that is adapted to two adjacent trapezoidal structural members.

[0008] Furthermore, the radiation shielding material is a lead plate or a tungsten alloy plate.

[0009] Furthermore, the trapezoidal structural member has symmetrical extensions on both sides, the inner side of the trapezoidal structural member is a hollow cavity, a steel cage adapted to its contour is installed inside the hollow cavity, and the hollow cavity is filled with radiation-proof filler.

[0010] Furthermore, the sum of the lengths of the two extensions in the cross-section of the trapezoidal structural member is the same as the length of the upper base of the trapezoidal structural member, and the width of the extension is 1 / 2 of the length of the upper base of the trapezoidal structural member.

[0011] Furthermore, the radiation-proof mortar is made by mixing water, cement, aggregate, ultrafine steel fiber, active lead powder and water-reducing agent, and the radiation-proof mortar is evenly applied to the surface of the inner concrete wall.

[0012] Furthermore, the radiation-shielding filler is made by mixing water, cement, barium sulfate, high-density aggregate, lead-containing radiation-shielding material, active mineral admixtures, and high-efficiency water-reducing agent.

[0013] Furthermore, a T-shaped connector is welded to the outer side of the trapezoidal structural member.

[0014] Furthermore, both the inner and outer concrete walls are constructed using barite concrete.

[0015] The advantages of the technical solution of the present invention compared with the prior art are as follows: The radiation-proof wall structure is designed as a multi-layer structure in this technical solution. Not only is radiation shielding material filled in the intermediate layer between the inner and outer concrete walls, but a radiation-proof layer is also set on the surface of the inner concrete wall to achieve multi-layer protection, effectively blocking the leakage of radiation and achieving efficient shielding of radiation. Chamfers are set at each corner inside the wall to reduce the radiation reflection angle, thereby reducing radiation reflection and scattering and improving the protection effect. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic cross-sectional view of the multi-layer radiation shielding wall structure in this invention.

[0018] Figure 2 This is another cross-sectional structural diagram of the multi-layer radiation shielding wall in this invention.

[0019] Figure 3This is a schematic diagram of the trapezoidal structural component in Embodiment 2 of the present invention.

[0020] Explanation of reference numerals in the attached drawings: 1-Inner concrete wall, 2-Outer concrete wall, 3-Trapezoidal structural component, 301-Extension, 4-Radiation shielding material, 5-Radiation shielding layer, 6-Reinforcing cage, 7-Radiation shielding filler, 8-Chamfer, 9-Connector. Detailed Implementation

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0023] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] Example 1

[0025] like Figures 1-2 As shown, the present invention provides a radiation protection structure system for hospital buildings, including a multi-layer radiation protection wall, which includes an inner concrete wall 1, an intermediate interlayer and an outer concrete wall 2. The intermediate interlayer is filled with radiation shielding material 4, and the surface of the inner concrete wall 1 is provided with a radiation protection layer 5.

[0026] In this embodiment, the intermediate interlayer includes two rows of interlocking support components, with a radiation shielding material 4 sandwiched between them. The radiation shielding material 4 is a bent lead plate or tungsten alloy plate, and the bending shape of the lead plate or tungsten alloy plate matches the contour of the interlocking part of the two rows of support components. Each support component includes several trapezoidal structural members 3 arranged in parallel and fixedly connected in sequence. At the corner of the intermediate interlayer, there is a non-circular structural member that matches two adjacent trapezoidal structural members 3. In this embodiment, both the trapezoidal structural members 3 and the non-circular structural members are made of steel to ensure sufficient support strength. By matching and interlocking the non-circular structural members with the two trapezoidal structural members 3 at the corner, the intermediate interlayer can be connected into a whole.

[0027] The trapezoidal structural member 3 has symmetrical extensions 301 on both sides. These extensions 301 ensure that after the two rows of support components are assembled, the gaps between any two trapezoidal structural members 3 are sealed by the upper bottom surfaces of the interlocking trapezoidal structural members 3 on opposite sides, preventing radiation from penetrating and significantly improving the wall's radiation shielding capability. The sum of the lengths of the two extensions 301 in the cross-section of the trapezoidal structural member 3 is the same as the length of the upper bottom of the trapezoidal structural member 3, and the width of the extension 301 is half the length of the upper bottom of the trapezoidal structural member 3. This design allows the trapezoidal structural members 3 in the intermediate interlayer to achieve a tight fit even at corners, reducing the possibility of radiation leakage.

[0028] The inner side of the trapezoidal structural component 3 is a hollow cavity. Inside the hollow cavity is a steel cage 6, constructed to conform to its contour. The hollow cavity is filled with radiation-shielding filler 7. In this embodiment, the radiation-shielding filler 7 is a mixture of water, cement, barium sulfate, high-density aggregate, lead-containing radiation-resistant material, active mineral admixtures, and a high-efficiency water-reducing agent. The active mineral admixtures include granulated blast furnace slag, pozzolanic materials, fly ash, silica fume, steel slag powder, and phosphorus slag powder. The proportions and performance enhancement methods of these components need to be determined based on specific engineering requirements and protection levels. Lead-containing radiation-resistant materials include lead powder and lead slag. The amount of material added during construction is determined based on the required protection level and radiation dose, generally between 10% and 30%. Adding active mineral admixtures can improve the characteristics of concrete, increasing its strength, density, and impermeability. The principle is that the admixtures react with calcium hydroxide generated during cement hydration to form a hydraulic cementitious material, thereby improving the strength and durability of the concrete. For example, silica fume is a grayish-white fine powder, mainly composed of silicon dioxide and aluminum oxide. It has high reactivity and can react with cement to form a gel, thereby improving the strength, impermeability, and durability of concrete.

[0029] Each corner on the inner side of the inner concrete wall 1 is provided with a chamfer 8. The chamfer 8 can reduce the reflection angle of radiation, thereby reducing the reflection and scattering of radiation. When radiation shines on the chamfer 8, due to the presence of the chamfer 8, the radiation will be absorbed more or scattered at a wider angle, rather than being directly reflected back, thus improving the radiation protection effect of the entire wall structure to a certain extent.

[0030] Both the inner concrete wall 1 and the outer concrete wall 2 are constructed using barite concrete, giving them high density and radiation shielding properties. Furthermore, adding admixtures such as silica lime, diatomaceous earth, and sulfoaluminate to the concrete effectively improves its radiation shielding performance. These admixtures react with certain components in the cement to form a more stable colloid, reducing the porosity of the concrete and thus enhancing its density and radiation shielding properties.

[0031] The surface of the inner concrete wall 1 is provided with a radiation shielding layer 5. In this embodiment, the radiation shielding layer 5 is a lead plate, radiation shielding mortar, or barium cement applied in multiple layers.

[0032] (1) When hanging lead plates on the inner concrete wall 1, paint should be applied to the surface of the lead plates to prevent the lead plates from being exposed and oxidized to form lead dioxide.

[0033] (2) The radiation-proof mortar is made by mixing water, cement, aggregate, ultra-fine steel fiber, active lead powder and water-reducing agent. During construction, the radiation-proof mortar is evenly applied to the surface of the inner concrete wall 1. In order to improve the radiation protection effect, it can be applied in layers.

[0034] Components of radiation-shielding mortar:

[0035] Cement: Due to the radiation shielding requirements of hospital building walls and to avoid problems such as wall cracking caused by hydration heat, calcium silicate (CaSiO3) cement with added ingredients to reduce hydration heat is selected.

[0036] Aggregates: Some coarse and fine aggregates (such as barite as coarse aggregate and small-particle sand and gravel as fine aggregate) are added to the mortar to adjust the density of the mortar. Coarse aggregates can adjust the density of the mortar and improve the absorption performance of the wall against radiation. The role of fine aggregates is to reduce the density difference between the cementitious materials and aggregates in the mortar and improve the bonding degree of the mortar.

[0037] Ultra-fine steel fibers: Ultra-fine steel fibers can be added to strengthen the mortar and improve the overall compressive and bending strength of the wall.

[0038] Activated lead powder: Activated lead powder can greatly improve the overall radiation protection effect of mortar. Activated lead powder is micron-sized and can be well integrated with mortar.

[0039] Water-reducing agent: In some mortars that are mainly composed of sulfates, the compounds combine with water to form negative ions, so a smaller amount of water-reducing agent is needed. In some mortars that contain calcium ions, these positive ions require a larger amount of water-reducing agent.

[0040] (3) Barium cement is a type of cement made from clinker composed mainly of barium trisilicate or barium disilicate, with the addition of an appropriate amount of gypsum. Its main raw materials are usually barium carbonate (BaCO3) or barium sulfate (BaSO4) and clay. Barium cement mainly uses barite and clay as its main raw materials, which are calcined to obtain clinker composed mainly of barium disilicate, and then an appropriate amount of gypsum is added and ground together. During construction, barium cement needs to be mixed with water to form a paste, and then applied in multiple layers to the surface of the inner concrete wall.

[0041] For the construction structure of doors and windows in radiation-proof walls: doors and windows are made of lead plates, steel plates, and lead glass. The steel plates are used to make the frame, and the center of the frame is filled with lead plates or inlaid with lead glass. The width of the overlap joint of the lead plates between the door frame and the door leaf, between the door leaf and the threshold, and between the door leaves is not less than 15mm.

[0042] Example 2

[0043] like Figure 3 As shown, the technical difference between this embodiment and embodiment 1 is that, in order to improve the connection strength between the outer surfaces of the trapezoidal structural member 3 and the irregular structural member and the inner concrete wall 1 and the outer concrete wall 2, a T-shaped connector 9 can be welded to the outer surfaces of the trapezoidal structural member 3 and the irregular structure, which can provide tensile force to the inner concrete wall 1 and the outer concrete wall 2 and improve the stability of the entire wall.

[0044] Example 3

[0045] The key difference between this embodiment and Embodiment 1 or Embodiment 2 is that the radiation shielding filler 7 is made by casting a mixture of modified nano-gadolinium oxide, boron carbide and high-density polyethylene.

[0046] To enhance the radiation shielding strength of the wall, the thickness of the inner concrete wall 1 and the outer concrete wall 2 can be appropriately increased, so that the radiation penetration ability weakens with the increase of wall thickness. In this technical solution, the radiation shielding wall structure is designed as a multi-layer structure. Not only is radiation shielding material 4 filled in the intermediate layer between the inner and outer concrete walls 2, but a radiation shielding layer 5 is also set on the surface of the inner concrete wall 1, achieving multi-layer protection. This not only reduces the construction thickness of the wall but also effectively blocks the leakage of radiation, achieving highly efficient radiation shielding. The trapezoidal structural component 3 effectively blocks the radiation propagation path, and radiation shielding filler 7 is filled in the trapezoidal structural component 3 and the irregular structural components at the corners. By increasing the radiation shielding component in the concrete, the density of the concrete can be increased, thereby increasing its resistance to radiation penetration and improving its protective performance. During construction, chamfers 8 are set at each corner inside the wall, which can reduce the radiation reflection angle, thereby reducing radiation reflection and scattering and improving the protective effect.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A radiation protection structural system for hospital buildings, characterized in that, The system includes a multi-layered radiation shielding wall, comprising an inner concrete wall, an intermediate interlayer, and an outer concrete wall. The intermediate interlayer is filled with radiation shielding material, and the surface of the inner concrete wall is provided with a radiation shielding layer. Each corner inside the multi-layered radiation shielding wall is chamfered. The intermediate interlayer includes two rows of interlocking support components, with a bent radiation shielding material sandwiched between the two rows of support components. Each row of support components includes several trapezoidal structural members arranged in parallel and fixedly connected in sequence. At the corner of the intermediate interlayer, there is an anisotropic structural member that is adapted to the two adjacent trapezoidal structural members. The trapezoidal structural member has symmetrical extensions on both sides. The connection gap between two trapezoidal structural members can be sealed by the top surface of the interlocking trapezoidal structural members on the opposite side. The inner side of the trapezoidal structural member is a hollow cavity. A steel cage adapted to its contour is installed inside the hollow cavity. The hollow cavity is filled with radiation-proof filler. The sum of the lengths of the two extensions in the cross-section of the trapezoidal structural member is the same as the length of the upper base of the trapezoidal structural member, and the width of the extension is 1 / 2 of the length of the upper base of the trapezoidal structural member.

2. The hospital building radiation protection structure system according to claim 1, characterized in that, The radiation shielding layer is a lead plate, radiation shielding mortar, or barium cement applied in multiple layers.

3. The hospital building radiation protection structure system according to claim 1, characterized in that, The radiation shielding material is a lead plate or a tungsten alloy plate.

4. The hospital building radiation protection structure system according to claim 2, characterized in that, The radiation-proof mortar is made by mixing water, cement, aggregate, ultrafine steel fiber, active lead powder and water-reducing agent, and the radiation-proof mortar is evenly applied to the surface of the inner concrete wall.

5. The hospital building radiation protection structure system according to claim 1, characterized in that, The radiation-shielding filler is made by mixing water, cement, barium sulfate, high-density aggregate, lead-containing radiation-shielding material, active mineral admixtures, and high-efficiency water-reducing agent.

6. The hospital building radiation protection structure system according to claim 1, characterized in that, The trapezoidal structural component has a T-shaped connector welded to its outer side.

7. The hospital building radiation protection structure system according to claim 1, characterized in that, Both the inner and outer concrete walls are constructed using barite concrete.

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