Radiation-proof square cabin for hospital

Abstract

The invention discloses an anti-radiation shelter for hospitals, the shelter comprises anti-radiation members and prefabricated concrete members, the anti-radiation members on six surfaces sequentially comprise a mixed material groove, a pure water groove and a plurality of lead plate insertion grooves from outside to inside, and marble insertion plate grooves are formed in the transverse direction of the anti-radiation members; a keel of the prefabricated concrete member is arranged at the position far away from the lead plate inserting groove, a drainage pipeline penetrates through the anti-radiation member and is connected with a decay pool, a pipeline passage penetrates through the anti-radiation member and extends in an S-shaped or Z-shaped mode, and calcium carbonate plates and barium sulfate coating are arranged in the square cabin. Through multi-layer protection, radiation overflow is effectively blocked, efficient radiation shielding is achieved, the reflection angle of radiation can be reduced, accordingly, reflection and scattering of radiation are reduced, and the protection effect is improved.

Description

[0001] Technology

[0002] The present invention relates to the technical field of assembled hospitals, and in particular to a radiation-proof square cabin for hospitals. Background Art

[0003] With the rapid development of modern science and technology, medical equipment is changing with each passing day, and various high-energy rays are being used more and more widely in the medical field. Various radiation protection rooms in hospitals, such as X-ray machines, CT machines, linear accelerators, etc., as a special structure with special functions and special safety requirements, are the largest artificial radiation sources that people may be exposed to. This radiation can penetrate cells, damage DNA, and cause radiation damage to patients and medical staff. It is important to make the building itself adapt to the protection requirements of new diagnostic and treatment technologies, minimize the impact of radiation on patients, doctors and the surrounding environment, improve the working environment of doctors, and the environment for patients waiting and seeing doctors. Therefore, it is very important to have fine construction requirements for rooms in hospitals that prevent radiation spillover.

[0004] At present, most hospitals' radiation protection departments achieve sealing and prevent radiation leakage by adding high-density lead plates of different thicknesses on the inside of the walls during masonry and painting according to the intensity of radiation in each department. Although high-density lead plates of different thicknesses were selected for blocking according to the radiation intensity of each department's room at the beginning of the design, different equipment has different radiation capabilities. Different radiation protection rooms cannot be quickly configured for primary medical conditions and emergencies such as epidemics, resulting in primary hospitals and emergency situations being unable to enjoy high-quality medical care, and this type of equipment cannot be transferred between primary hospitals and different departments.

[0005] Based on this, the present invention proposes a radiation-proof cabin for hospital use. Summary of the invention

[0006] In order to solve the problems existing in the prior art, the present invention provides a radiation-proof shelter for a hospital. In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0007] A radiation-proof cabin for a hospital, comprising a radiation-proof component and a precast concrete component. The radiation-proof component on six sides comprises a mixing tank, a pure water tank and a plurality of lead plate insertion slots from the outside to the inside, and a marble plate insertion slot is arranged in the transverse direction of the radiation-proof component. The keel of the precast concrete component is arranged away from the lead plate insertion slot. A drainage pipe is arranged through the radiation-proof component, and the drainage pipe is connected to a decay pool. A pipeline passage is arranged through the radiation-proof component, and the pipeline passage extends in an S shape or a Z shape. The interior of the cabin adopts calcium carbonate board and barium sulfate paint.

[0008] Preferably, the mixing trough comprises a bottom light aggregate layer and a barite layer, and the barite layer is made of barite, fine sand and gypsum powder in a ratio of 4:1.15:1.

[0009] The main component of barite is barium sulfate. The core mass of barium is large and the number of atoms per unit volume is large, which makes it more likely to have photoelectric effect. When the radiation irradiates barite, the electrons in its atoms absorb the energy of the radiation and are excited, so that the energy of the radiation is absorbed, and then the radiation protection effect is achieved, thereby absorbing the radiation from the photoelectric effect. The barium ion has a higher dielectric constant or magnetization intensity, and has a strong magnetic loss effect on electromagnetic radiation, which can effectively reduce the intensity of electromagnetic radiation. Therefore, it also has a good protective effect on non-ionizing radiation. Gypsum is added to imitate cement mixtures, facilitate quick construction, reduce the weight of the overall components, and achieve the effect of light transportation and quick construction. The role of crystal water, gypsum contains crystal water, which can absorb and scatter part of the radiation. When radiation (such as neutron radiation) comes into contact with gypsum containing crystal water, the radiation interacts with the hydrogen atoms in the water molecules. After the neutron collides with the hydrogen atom, its energy will be lost to a certain extent, changing the direction of movement of the neutron, thereby playing the role of reducing radiation. This is similar to the principle of using hydrogen-containing materials to slow down neutrons in nuclear reactors.

[0010] Scattering effect of physical structure: Gypsum has a complex microscopic crystal structure. When radiation enters the interior of the gypsum, this crystal structure will cause the radiation to scatter. For example, for alpha and beta rays, the crystal structure inside the gypsum is like a tiny obstacle. When the ray particles move in it, they will constantly collide with these structures, changing their original movement trajectory, causing the rays to scatter and reducing the intensity of the rays in a certain direction, thus playing a certain protective role.

[0011] Although gypsum is not as dense as concrete, after multiple layers of lead plate protection and barite protection, this impact value is extremely low. Its radiation protection is mainly based on the absorption and scattering of radiation energy by the atoms in its components. For electromagnetic radiation such as gamma rays (γ rays) and X-rays, the electron clouds of heavy element atoms (such as calcium, silicon, etc.) can absorb and scatter radiation through the photoelectric effect, Compton scattering and electron pair effect, thereby reducing the penetration of radiation.

[0012] Preferably, the thickness of the bottom light aggregate layer is 25 cm, and the thickness of the barite layer is 40 cm. After drying and compaction, they are injected into the paraffin tank into the mixing tank, and then sealed for waterproofing.

[0013] Preferably, the fine sand is silica fine sand, and the thickness of the marble slab is greater than 5 cm.

[0014] Preferably, the pure water tank is filled with pure water, has a thickness of 24 cm, and is provided with an independent circulation pressure relief valve at the top.

[0015] Hydrogen atoms can slow down neutrons and reduce their energy through elastic scattering. The principle of protection against neutron radiation: Neutrons are uncharged particles with a mass similar to that of protons. When high-energy neutrons collide with hydrogen atoms in water molecules, elastic scattering occurs. Since the mass of hydrogen atoms and neutrons is similar, according to the laws of conservation of momentum and energy, during the collision, neutrons will transfer most of their energy to hydrogen atoms, greatly reducing their own energy and slowing down their speed. It is like a moving ball (neutron) colliding with another ball of similar mass (hydrogen atom). After the collision, the speed of the original moving ball will decrease. After many such collisions, the energy of the neutron will gradually decrease to the level of thermal neutrons (energy around 0.025eV), and the penetrating power of thermal neutrons will be greatly weakened. In addition, hydrogen atoms in water (the paraffin above is also for this function) can also absorb thermal neutrons through nuclear reactions.

[0016] n+ 1 H→ 2 H+γ

[0017] Further reduce the number of neutrons, thereby reducing the hazards of neutron radiation.

[0018] Preferably, the mixing tank and the pure water tank are separated by a marble partition plate, the inner wall of the pure water tank is lined with lead glass, and the thickness of the marble partition plate is 5 cm.

[0019] Lead glass is added to the inner lining. Lead glass has high density and good absorption capacity, and can effectively absorb and attenuate high-energy radiation, such as X-rays and gamma rays. Its radiation protection principle mainly relies on the high atomic number and density of lead, which reduces the penetration of radiation through mechanisms such as photoelectric effect and Compton scattering. In addition, lead glass also has good light transmittance and chemical stability, and can be used for a long time under different environmental conditions.

[0020] Preferably, the keel is made of PC socket-type prefabricated concrete components, and the connectors between the PC socket-type prefabricated concrete components are made of high-strength carbon pins.

[0021] Preferably, the partitions of several of the lead plate insertion slots are made of marble partitions.

[0022] Preferably, the lead plate thickness of the lead plate insertion slot is 0.5-20 mm.

[0023] Preferably, the gap between the lead plate and the marble plate partition is filled with paraffin.

[0024] In summary, since the present invention adopts the above technical solution, the present invention has the following technical effects:

[0025] 1. The present invention adopts a multi-layer structure in all six walls. Not only barite, fine sand and gypsum powder are added to the mixing tank, but also a pure water tank is provided. The pure water tank is lined with lead glass and a multi-layer lead plate is inserted into the tank near the core to achieve multi-layer protection, effectively block the spillage of radiation, achieve efficient shielding of radiation, reduce the reflection angle of radiation, thereby reducing the reflection and scattering of radiation, and improve the protection effect.

[0026] 2. The present invention isolates radiation of different intensities by inserting lead plates of different thicknesses into the lead plate insertion grooves. According to primary medical conditions and emergency situations, a radiation protection room that meets the strength requirements can be quickly set up to block radiation of different intensities, thereby adapting to the use of different equipment and enabling the equipment to be transferred between different departments of primary hospitals, thereby improving the adaptability of primary medical care. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a multi-layer radiation protection wall;

[0028] Figure 2 This is a schematic diagram of the structure of the multi-layer radiation protection wall and precast concrete components on one side;

[0029] Figure 3 This is a structural schematic diagram of the cable trench wall opening 1;

[0030] Figure 4 This is a structural diagram of the physical measuring line pipe through the wall hole;

[0031] Figure 5 This is a schematic diagram of the structure of the cable trench wall opening 2;

[0032] The figures are marked as: 1-mixing material tank; 2-pure water tank; 3-first lead plate insertion tank; 4-second lead plate insertion tank; 5-third lead plate insertion tank; 6-pipeline passage; 7-drainage pipe; 8-precast concrete component; 9-marble plate slot; 10-cushion. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0034] Example 1

[0035] like Figure 1-Figure 2As shown, a radiation-proof cabin for a hospital includes a radiation-proof component and a precast concrete component 8. The radiation-proof components on six sides include a mixing tank 1, a pure water tank 2 and a plurality of lead plate insertion slots 3-5 from the outside to the inside, and a marble plate insertion slot 9 is arranged in the transverse direction of the radiation-proof component. The keel of the precast concrete component 8 is arranged away from the lead plate insertion slots 3-5. A drainage pipe 7 is arranged through the radiation-proof component, and the drainage pipe 7 is connected to the decay pool. A pipeline passage 6 is arranged through the radiation-proof component, and the pipeline passage 6 is extended in an S shape or a Z shape. The interior of the cabin adopts calcium carbonate board and barium sulfate coating. The mixing tank 1 includes a bottom light aggregate layer and a barite layer. The barite layer is made of barite, fine sand and gypsum powder in a ratio of 4:1.15:1. The thickness of the bottom light aggregate layer is 25 cm, and the thickness of the barite layer is 40 cm. After drying and compacting, the paraffin tank is injected into the mixing tank, and waterproofing is performed after sealing. Light aggregate is mainly used to prepare light aggregate concrete, thermal insulation mortar and refractory concrete, etc. It can also be used as thermal insulation loose filler. The main component of barite is barium sulfate. The core mass of barium is large and the number of atoms per unit volume is large, which makes it more likely to have photoelectric effect. When the radiation irradiates barite, the electrons in its atoms absorb the energy of the radiation and are excited, so that the radiation energy is absorbed, and then the radiation protection effect is achieved, thereby absorbing the radiation from the photoelectric effect. The barium ion has a higher dielectric constant or magnetization intensity, and has a strong magnetic loss effect on electromagnetic radiation, which can effectively reduce the intensity of electromagnetic radiation. Therefore, it also has a good protection effect on non-ionizing radiation. Gypsum is added to imitate cement mixture to achieve the effect of light transportation and fast construction. Although gypsum is not as dense as concrete, after multiple layers of lead plate protection and barite protection, the impact value is extremely low. Its radiation protection is mainly based on the absorption and scattering of radiation energy by the atoms in its components. As for electromagnetic radiation such as gamma rays (γ rays) and X-rays, the electron clouds of heavy elements (such as calcium, silicon, etc.) atoms can absorb and scatter the rays through photoelectric effect, Compton scattering and electron pair effect, thereby reducing the penetration of radiation. The fine sand is silicon dioxide fine sand, and the thickness of the marble slab is more than 5 cm.

[0036] The pure water tank is made of pure water with a thickness of 24 cm, and an independent circulating pressure relief valve is set at the top. Hydrogen atoms can slow down neutrons and reduce their energy through elastic scattering. Principle of protection against neutron radiation: Neutrons are uncharged particles with a mass similar to that of protons. When high-energy neutrons collide with hydrogen atoms in water molecules, elastic scattering occurs. Since the mass of hydrogen atoms is similar to that of neutrons, according to the laws of conservation of momentum and energy, neutrons will transfer most of their energy to hydrogen atoms during the collision, and their own energy will be greatly reduced and their speed will be slowed down. It is like a moving ball (neutron) collides with another ball of similar mass (hydrogen atom). After the collision, the speed of the original moving ball will decrease. After many such collisions, the energy of the neutron will gradually decrease to the level of thermal neutrons (energy around 0.025eV), and the penetrating ability of thermal neutrons will be greatly weakened. In addition, the hydrogen atoms in the water (the paraffin above is also for this function) can also absorb thermal neutrons and pass nuclear reactions.

[0037] n+ 1 H→ 2 H+γ further reduces the number of neutrons, thereby reducing the harm of neutron radiation.

[0038] The mixing tank and the pure water tank are separated by a marble partition, the inner wall of the pure water tank is lined with lead glass, and the thickness of the marble partition is 5 cm. The content of radioactive substances in marble is low. From the perspective of chemical composition and crystal structure, the main component of marble is calcium carbonate (CaCO3), and it also contains some trace elements. Its crystal structure is relatively complex. When radiation (such as X-rays and gamma rays) enters the interior of the marble, the rays will interact with the atoms in the marble. The electron clouds of calcium atoms, carbon atoms and other trace elements in the marble will scatter the radiation photons. Just like light will scatter when it propagates in an inhomogeneous medium, the radiation photons will change direction after colliding with atoms inside the marble, so that part of the radiation cannot propagate in a straight line along the original direction, achieving the effect of reducing the radiation intensity. The chemical bonds between atoms in the marble (such as ionic bonds in calcium carbonate) will also participate in the attenuation process of radiation. When the radiation energy acts on these chemical bonds, part of the energy will be absorbed by the chemical bonds, resulting in changes in the vibration or excited state of the chemical bonds. This energy absorption process reduces the energy of the radiation, and after passing through a certain thickness of marble, the radiation intensity will be significantly weakened. Density factor: The density of marble is relatively high, generally around 2.6-2.8 g / cm3. A higher density means there are more atoms per unit volume to block radiation. According to the attenuation law of radiation in matter, the probability of radiation interacting with atoms in matter when penetrating matter is related to the density of the matter. For electromagnetic radiation such as X-rays and gamma rays, when they penetrate marble, they will frequently collide with atoms in marble, so that the energy of the radiation is absorbed or scattered, and the radiation intensity is reduced accordingly.

[0039] Physical barrier effect Marble is a solid material that has a physical barrier effect on radiation. For particle radiation such as alpha rays and beta rays, marble can be used as a physical barrier. Alpha rays are a particle flow composed of helium nuclei, which have weak penetration ability. A piece of paper can block most of the alpha rays. The solid structure of marble is a more powerful barrier for alpha rays and can completely block alpha rays. Beta rays are high-speed electron flows, which have stronger penetration ability than alpha rays, but weaker than gamma rays and X-rays. A certain thickness of marble can effectively weaken the intensity of beta rays and prevent them from penetrating to the other side. And lead glass is added to the inner lining. Lead glass has high density and good absorption capacity, which can effectively absorb and attenuate high-energy radiation such as X-rays and gamma rays. Its radiation protection principle mainly relies on the high atomic number and density of lead, and reduces the penetration ability of radiation through mechanisms such as photoelectric effect and Compton scattering. Composite blocking of different media can effectively play the mechanism principle of radiation protection.

[0040] In addition, lead glass has good light transmittance and chemical stability, and can be used for a long time under different environmental conditions. The interior of the cabin adopts calcium carbonate board and barium sulfate paint. The keel adopts PC socket-type precast concrete components, and the connecting parts between PC socket-type precast concrete components adopt high-strength carbon pins. The iron parts of PC socket-type precast concrete components are strictly prohibited from being exposed, and each groove plate of the longitudinal structural column of the skeleton must be set separately. The partitions of several lead plates inserted into the grooves adopt marble partitions. The thickness of the lead plate of the lead plate inserted into the groove is 0.5-20mm. The gap between the lead plate and the marble plate partition is filled with paraffin. The cavity width of the concrete component 8 reaches 1.8m wide, and the 6 faces are consistent.

[0041] It is worth noting that the electromechanical system of the hospital's radiation-proof cabin, whether it is the external or internal pipes and structures, must adopt Z-shaped and S-shaped. Figure 3 The cable trench wall opening 1, Figure 4 It is the physical measurement line pipe through the wall hole, Figure 5 The cable trench is through the wall hole 2, and the pipeline passage 6 is an S-shaped or Z-shaped wire pipeline extending toward the ground. The fresh air system still uses a lead-mouth air duct. In the specific implementation of the shelter, both sides of the ground wall should be covered with a stone layer with a thickness of more than 40 cm, and the pipeline passage 6 is S-shaped and below the stone layer.

[0042] Due to the use of precast concrete components and multi-layer radiation-proof components, and the fact that lead plates of different thicknesses can be inserted into the lead plate insertion grooves in the multi-layer structure, a radiation-proof cabin can be quickly built. The radiation-proof cabin is similar to a container, which is quick and convenient to build, and can block radiation according to different intensities to achieve a rapid emergency response effect.

[0043] Example 2

[0044] For ordinary X-ray equipment, other structures are the same as those in Example 1. In conventional X-ray examination rooms in hospitals, such as X-ray machines for taking pictures of limbs, chest and other parts, the lead plate thickness of the lead plate insertion slot 5 used is 1-2mm, which is the base plate; the lead plate of the lead plate insertion slot 4 is a safety margin plate, which is increased by 10%-20% on the basis of the lead plate thickness of the lead plate insertion slot 5. During the installation process of the base plate, i.e., the lead plate insertion slot 5, it is inevitably affected by the special geographical environment of the project or the component installation process and method, and its closed isolation and blocking effect is inevitably affected by external factors (including but not limited to transportation, installation, and site restrictions). Due to the influence of factors, gaps are generated. In order to prevent gaps or shape deviations, a safety margin plate, namely a lead plate insertion slot 4, is installed; the lead plate thickness of the lead plate insertion slot 3 is 1.5 mm, which is used for emergency and external force majeure. The plate is inserted. Due to outdoor installation, especially in remote medical or emergency medical processes, if the outside world produces destructive force, the entire area will suffer from radiation pollution. In order to avoid this situation, a lead plate insertion slot 3 is set. During the installation process, a high-energy battery pack (set outside the equipment) should also be prepared. Once the equipment is turned on, the high-energy battery pack will keep running.

[0045] Example 3

[0046] Regarding the dental X-ray equipment, the other structures are the same as those in Example 1. The radiation dose of a dental X-ray machine is usually smaller than that of an ordinary whole-body X-ray machine. The lead plate thickness of the lead plate insertion slot 5 used is 0.5-1mm, which is the base plate; the lead plate of the lead plate insertion slot 4 is a safety margin plate, which is 10%-20% thicker than the lead plate thickness of the lead plate insertion slot 5. During the installation of the base plate, i.e., the lead plate insertion slot 5, it is inevitably affected by external factors (including but not limited to transportation, installation, and site restrictions) such as the special geographical environment of the project or the component installation process, resulting in gaps. In order to prevent the gaps or shape deviations, a safety margin plate, i.e., the lead plate insertion slot 4, is installed; the lead plate thickness of the lead plate insertion slot 3 is 1.5mm, which is used for emergency and external force majeure. The plate is inserted. Due to outdoor installation, especially in remote medical treatment or emergency medical treatment, if the outside world generates destructive force, the entire area will suffer from radiation pollution. In order to avoid this situation, the lead plate insertion slot 3 is set. During the installation process, a high-energy battery pack (set outside the equipment) should also be prepared. Once the equipment is turned on, the high-energy battery pack will continue to run.

[0047] Example 4

[0048] For CT equipment, other structures are the same as those in Example 1. The radiation energy generated by the CT equipment is relatively high, generally around 120-140keV. In order to effectively protect the radiation generated by the CT equipment, the lead plate thickness of the lead plate inserted into the slot 5 is 2-3mm, which is the base plate; the lead plate of the lead plate inserted into the slot 4 is a safety margin plate, which is increased by 10%-20% on the basis of the lead plate thickness of the lead plate inserted into the slot 5. During the installation process of the base plate, i.e., the lead plate inserted into the slot 5, it is inevitably affected by the special geographical environment of the project or the component installation process and method, and its closed isolation and blocking effect is inevitably affected by (including but not limited to) transportation, installation, The gap is caused by the influence of external factors such as site limitations. In order to prevent the gap or shape deviation, a safety margin plate, i.e., a lead plate insertion slot 4, is installed; the lead plate thickness of the lead plate insertion slot 3 is 1.5 mm, which is used for emergency and external force majeure. The plate is inserted. Due to outdoor installation, especially in remote medical or emergency medical processes, if the outside world produces destructive force, the entire area will suffer from radiation pollution. In order to avoid this situation, a lead plate insertion slot 3 is set. During the installation process, a high-energy battery pack (set outside the equipment) should also be prepared. Once the equipment is turned on, the high-energy battery pack will keep running.

[0049] Example 5

[0050] Regarding radiotherapy equipment (such as linear accelerators), linear accelerators used for cancer radiotherapy produce high-energy rays with energies as high as 6-20MeV. The lead plate thickness of the lead plate insertion slot 5 used is 10-20mm, which is the base plate; the lead plate of the lead plate insertion slot 4 is a safety margin plate, which is 10%-20% thicker than the lead plate thickness of the lead plate insertion slot 5. During the installation of the base plate, i.e., the lead plate insertion slot 5, it is inevitably affected by external factors (including but not limited to transportation, installation, and site restrictions) such as the special geographical environment of the project or the component installation process, resulting in gaps. In order to prevent the gaps or shape deviations, a safety margin plate, i.e., the lead plate insertion slot 4, is installed; the lead plate thickness of the lead plate insertion slot 3 is 1.5mm, which is used for emergency and external force majeure. The plate is inserted. Due to outdoor installation, especially in remote medical treatment or emergency medical treatment, if the outside world generates destructive force, the entire area will suffer from radiation pollution. In order to avoid this situation, the lead plate insertion slot 3 is set. During the installation process, a high-energy battery pack (set outside the equipment) should also be prepared. Once the equipment is turned on, the high-energy battery pack will continue to run.

[0051] The linear accelerator is a fully digitally designed machine that has multiple technologies including conventional radiotherapy, electron beam radiotherapy, three-dimensional conformal radiotherapy, static intensity modulated radiotherapy, dynamic intensity modulated radiotherapy, non-coplanar treatment, three-dimensional / four-dimensional image-guided intensity modulated radiotherapy, and volumetric rotation intensity modulated radiotherapy.

[0052] X-ray energy: 6MV and 10MV, meeting the needs of conventional and deep tumor treatment;

[0053] Electron beam energy: Five levels are provided in the range of 4 to 18 MeV to meet the needs of superficial tumor treatment;

[0054] The maximum dose rate of X-rays is ≥600mu / mi; the maximum dose rate of electron beams is ≥600mu / min, which meets the treatment efficiency;

[0055] Equipped with a real-time portal verification system (EPID) that can perform MV-level image guidance;

[0056] It is equipped with kV-CBCT image guidance system, which has two-dimensional, three-dimensional and four-dimensional image guidance functions;

[0057] Built-in high-precision multi-leaf grating, the number of blades ≥120, the maximum radiation field ≥40cm*40cm, the leaf movement speed ≥5cm / s, the leakage rate between leaves ≤1%, meeting the needs of high-precision treatment.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A radiation-proof cabin for a hospital, characterized in that: The square cabin includes radiation protection components and precast concrete components. The radiation protection components on six sides include a mixing material tank, a pure water tank and a plurality of lead plate insertion tanks from the outside to the inside, and a marble plate insertion tank is arranged in the transverse direction of the radiation protection components. The keel of the precast concrete component is arranged away from the lead plate insertion tank. A drainage pipe is arranged through the radiation protection component, and the drainage pipe is connected to the decay tank. A pipeline passage is arranged through the radiation protection component, and the pipeline passage extends in an S shape or a Z shape. The interior of the square cabin adopts calcium carbonate board and barium sulfate paint.

2. A radiation-proof shelter for a hospital according to claim 1, characterized in that: The mixing trough comprises a bottom light aggregate layer and a barite layer, wherein the barite layer is made of barite, fine sand and gypsum powder in a ratio of 4:1.15:

1.

3. A radiation-proof shelter for hospital use according to claim 2, characterized in that: The thickness of the bottom light aggregate layer is 25 cm, and the thickness of the barite layer is 40 cm. After being dried and compacted, they are poured into the paraffin tank into the mixing tank, and then sealed for waterproofing.

4. A radiation-proof shelter for hospital use according to claim 2 or 3, characterized in that: The fine sand is silica fine sand.

5. A radiation-proof shelter for hospital use according to claim 1 or 2, characterized in that: The pure water tank is filled with pure water, has a thickness of 24 cm, and is provided with an independent circulation pressure relief valve at the top.

6. A radiation-proof shelter for a hospital according to claim 1, characterized in that: The mixing tank and the pure water tank are separated by a marble partition plate, the inner wall of the pure water tank is lined with lead glass, and the thickness of the marble partition plate is 5 cm.

7. A radiation-proof shelter for a hospital according to claim 1, characterized in that: The keel is made of PC socket-type prefabricated concrete components, and the connecting parts between the PC socket-type prefabricated concrete components are made of high-strength carbon pins.

8. The radiation-proof shelter for hospital use according to claim 1, characterized in that: The partitions of several lead plate insertion grooves are made of marble partitions.

9. The radiation-proof shelter for hospital use according to claim 1, characterized in that: The lead plate thickness of the lead plate insertion groove is 0.5-20mm.

10. A radiation-proof shelter for a hospital according to claim 9, characterized in that: The gap between the lead plate and the marble plate partition is filled with paraffin.

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