Shielding device and detection room

Abstract

The utility model discloses a shielding device and a detection room. The shielding device comprises four side shielding walls and a top shielding wall. The side shielding wall comprises an inner-layer shielding plate, an outer-layer shielding plate and a middle shielding layer, the inner-layer shielding plate is close to the sealed space, the middle shielding layer is filled between the inner-layer shielding plate and the outer-layer shielding plate and comprises a first lead structure layer and a first concrete shielding layer, the first lead structure layer is close to the inner-layer shielding plate, and the first concrete shielding layer is filled between the first lead structure layer and the first concrete shielding layer; the first concrete shielding layer is located on the side, away from the inner-layer shielding plate, of the first lead structure layer. The top surface shielding wall comprises a top surface shielding plate, a second lead structure layer and a second concrete shielding layer, the second lead structure layer is located on the side, away from the side surface shielding wall, of the top surface shielding plate, and the second concrete shielding layer is located on the side, away from the top surface shielding plate, of the second lead structure layer. The shielding device can more accurately and effectively protect specific radiation types, so that the structure is compact, and the construction period is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of radiation protection, in particular to a shielding device and a detection room. Background Art

[0002] The electron linear high-energy industrial CT accelerates the electron beam to a higher energy along a linear track through a microwave electromagnetic field. After the electrons are accelerated, they are blocked by the metal target and produce bremsstrahlung X-rays. Since the X-rays have a strong penetrating ability, they may cause radiation pollution to the surrounding environment. However, the X-rays generated during operation are generated and disappear with the opening and closing of the high-energy enhancement device. In order to meet the three-dimensional non-destructive testing and analysis of large and medium-sized castings and parts such as engine blocks, cylinder heads, volutes, and gearbox housings, and to achieve the goal of seeing and seeing clearly inside the parts, higher industrial CT ray radiation energy is required, which is bound to bring problems in radiation protection. At the same time, high-energy industrial CT not only produces high-energy rays, but also produces attached neutron beams. Therefore, both high-energy X-rays and neutron beams need to be shielded to prevent radiation damage to the surrounding environment and operators.

[0003] The existing protective measures are carried out by pouring concrete, which requires foundation treatment and the use of formwork for wall pouring. The concrete is composed of imported neutral silicate cement and a variety of special cements, high-density coarse aggregate, fine silica sand and special admixtures.

[0004] This method is achieved by building construction. The thickness of the wall needs to be more than 3 meters, so a lot of concrete is needed. Extra-thick walls require a very long number of building templates and a very long solidification time. The construction period is conservatively more than three months. Utility Model Content

[0005] The utility model provides a shielding device and a detection room. The shielding device can protect specific types of radiation more accurately and effectively, and has a compact structure, a small footprint, can shorten the construction period, and has a stronger protection capability.

[0006] In order to achieve the above object, the utility model provides the following technical solutions:

[0007] A shielding device is used in a high-energy CT detection room, comprising four side shielding walls and a top shielding wall, wherein the four side shielding walls and the top shielding wall cooperate to enclose a sealed space for placing CT detection equipment;

[0008] The side shielding wall is vertically arranged on the ground, and the four sides of the side shielding walls are connected in sequence to form a rectangular space. The side shielding wall includes an inner shielding plate, an outer shielding plate and an intermediate shielding layer. The inner shielding plate is adjacent to the sealed space, and the outer shielding plate is located on the side of the inner shielding plate away from the sealed space. The intermediate shielding layer is filled between the inner shielding plate and the outer shielding plate. The intermediate shielding layer includes a first lead structure layer and a first concrete shielding layer. The first lead structure layer is arranged adjacent to the inner shielding plate, and the first concrete shielding layer is located on the side of the first lead structure layer away from the inner shielding plate.

[0009] The top shielding wall is located on the side of the four side shielding walls away from the ground and is connected to the four side shielding walls. The top shielding wall includes a top shielding plate, a second lead structure layer and a second concrete shielding layer. The top shielding plate is arranged on the side of the side shielding wall away from the ground, the second lead structure layer is located on the side of the top shielding plate away from the side shielding wall, the second concrete shielding layer is located on the side of the second lead structure layer away from the top shielding plate, the first lead structure layer and the second lead structure layer are used to at least shield X-rays, and the first concrete shielding layer and the second concrete shielding layer are used to at least shield neutron rays.

[0010] Optionally, the inner shielding plate, the outer shielding plate and the top shielding plate are made of radiation-proof cement mortar.

[0011] Optionally, the inner shielding plate, outer shielding plate and top shielding plate are modularly designed, the inner shielding plates of the four side shielding walls are detachably connected, the outer shielding plates of the four side shielding walls are detachably connected, and the top shielding plate is detachably connected to the inner shielding plates and outer shielding plates of the four side shielding walls.

[0012] Optionally, the first lead structure layer and the second lead structure layer are formed by stacking a plurality of lead blocks layer by layer, and the lead blocks in the first lead structure layer and the second lead structure layer are arranged in a staggered manner;

[0013] The first concrete shielding layer and the second concrete shielding layer are formed by stacking a plurality of shielding blocks layer by layer, and the shielding blocks in the first concrete shielding layer and the second concrete shielding layer are arranged in a staggered manner.

[0014] Optionally, the gaps formed by the stacking of lead blocks and shielding blocks in the side shielding wall are filled with sand;

[0015] The gaps formed by the stacking of lead blocks and shielding blocks in the top shielding wall are filled with sand.

[0016] Optionally, the four side shielding walls include a forward protective wall, a rear protective wall and two lateral protective walls, the forward protective wall is used to be arranged facing the ray emission direction of the CT detection equipment, the rear protective wall is used to be arranged facing away from the ray emission direction of the CT detection equipment, and the two lateral protective walls are used to be arranged on both sides of the CT detection equipment;

[0017] The thickness of the first lead structure layer in the forward protective wall along the first direction is greater than the thickness of the first lead structure layer in the lateral protective wall along the second direction, and the thickness of the second lead structure layer in the lateral protective wall along the second direction is greater than the thickness of the first lead structure layer in the backward protective wall along the first direction;

[0018] The first direction is parallel to the radiation direction of the CT detection device, and the second direction is perpendicular to the first direction.

[0019] Optionally, the back-facing protective wall has a door opening, and an openable and closable protective door is installed at the door opening, and the protective door is used to shield the rays emitted by the CT detection equipment.

[0020] The embodiment of the utility model further provides a detection room, comprising a detection room and an equipment room and an operation room located on one side of the detection room, wherein the detection room comprises an outer wall and any one of the shielding devices provided by the above technical solution, wherein the outer wall encloses an inner space of the detection room, and the shielding device is located in the inner space;

[0021] The equipment room includes a power cabinet and a water cooling system;

[0022] The operating room includes an operating table and a control system, and the control system is signal-connected with the operating table, the shielding device and the CT detection equipment.

[0023] Optionally, it also includes a plurality of radiation detectors, a plurality of working status indicator lights and an ionizing radiation warning sign;

[0024] The plurality of radiation detectors are located at different positions inside and outside the shielding device, and are used to detect the radiation intensity in different areas of the detection room;

[0025] A plurality of status indicator lights are respectively arranged at different positions inside and outside the shielding device to indicate the working status of the CT detection equipment;

[0026] The ionizing radiation warning sign is arranged on the outer side of the shielding device;

[0027] The control system is connected with the radiation detector and the working status indicator light by signal.

[0028] Optionally, it further comprises a plurality of emergency stop buttons, which are respectively arranged on both sides of the CT detection equipment, the inside of the shielding device, the outside of the shielding device, the electric control box in the equipment room and the operating table;

[0029] The plurality of emergency stop buttons are connected to the control system signal.

[0030] The utility model provides a shielding device and a detection room. The shielding device can be applied to a high-energy CT detection room, and comprises four side shielding walls and a top shielding wall, wherein the four side shielding walls can be connected to enclose a rectangular space, the side shielding walls comprise an inner shielding plate, an outer shielding plate and an intermediate shielding layer, the top shielding wall is located on the side of the four side shieldings away from the ground, the top shielding wall comprises a top shielding plate, a second lead structure layer and a second concrete layer, the first lead structure layer and the second lead structure layer can shield X-rays, the first concrete shielding layer and the second concrete shielding layer can shield neutron rays, and each structure in the side shielding wall and the top shielding wall can have a specific radiation protection focus, and compared with the concrete poured shielding room in the prior art which only relies on the thickness of concrete to shield radiation, the utility model can more accurately and effectively protect specific radiation types, maximize the utilization rate of materials, and further make the shielding device compact in structure, small in footprint, shorten the construction period, and have stronger protection capability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the structure of a shielding device provided by an embodiment of the utility model;

[0032] Figure 2 A cross-sectional view of a shielding device provided by an embodiment of the utility model;

[0033] Figure 3 A schematic diagram of the plan structure of a testing room provided in an embodiment of the utility model;

[0034] Figure 4 A schematic diagram of the plan structure of a testing room provided in an embodiment of the utility model.

[0035] icon:

[0036] 1-side shielding wall; 101-forward protection wall; 102-backward protection wall; 103-side protection wall; 11-inner shielding plate; 12-outer shielding plate; 13-first lead structure layer; 14-first concrete shielding layer; 15-doorway; 2-top shielding wall; 21-top shielding plate; 22-second lead structure layer; 23-second concrete shielding layer; 3-protective door; A-CT detection equipment; A1-ray emitter; A2-detector;

[0037] 100-shielding device; 200-testing room; 201-exterior wall; 202-entry door; 300-equipment room; 400-operation room; 401-maze. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] Please refer to Figure 1 and Figure 2 The utility model provides a shielding device, which is applied to a high-energy CT detection room, and includes four side shielding walls 1 and a top shielding wall 2. The four side shielding walls 1 and the top shielding wall 2 cooperate to form a sealed space for placing a CT detection device A;

[0040] The side shielding wall 1 is vertically arranged on the ground, and the four side shielding walls 1 are connected in sequence to form a rectangular space. The side shielding wall 1 includes an inner shielding plate 11, an outer shielding plate 12 and an intermediate shielding layer. The inner shielding plate 11 is adjacent to the sealed space, the outer shielding plate 12 is located on the side of the inner shielding plate 11 away from the sealed space, the intermediate shielding layer is filled between the inner shielding plate 11 and the outer shielding plate 12, and the intermediate shielding layer includes a first lead structure layer 13 and a first concrete shielding layer 14. The first lead structure layer 13 is arranged adjacent to the inner shielding plate 11, and the first concrete shielding layer 14 is located on the side of the first lead structure layer 13 away from the inner shielding plate 11;

[0041] The top shielding wall 2 is located on the side of the four side shielding walls 1 away from the ground and is connected to the four side shielding walls 1. The top shielding wall 2 includes a top shielding plate 21, a second lead structure layer 22 and a second concrete shielding layer 23. The top shielding plate 21 is arranged on the side of the side shielding wall 1 away from the ground, the second lead structure layer 22 is located on the side of the top shielding plate 21 away from the side shielding wall 1, and the second concrete shielding layer 23 is located on the side of the second lead structure layer 22 away from the top shielding plate 21. The first lead structure layer 13 and the second lead structure layer 22 are used to at least shield X-rays, and the first concrete shielding layer 14 and the second concrete shielding layer 23 are used to at least shield neutron rays.

[0042] The shielding device provided by the utility model can be applied to a high-energy CT detection room, and includes four side shielding walls 1 and a top shielding wall 2, wherein the four side shielding walls 1 can be connected to form a rectangular space, the side shielding wall 1 includes an inner shielding plate 11, an outer shielding plate 12 and an intermediate shielding layer, the top shielding wall 2 is located on the side of the four side shieldings away from the ground, the top shielding wall 2 includes a top shielding plate 21, a second lead structure layer 22 and a second concrete layer, the first lead structure layer 13 and the second lead structure layer 22 can shield X-rays, the first concrete shielding layer 14 and the second concrete shielding layer 23 can shield neutron rays, so that each structure in the side shielding wall 1 and the top shielding wall 2 has a specific radiation protection focus, and compared with the concrete poured shielding room in the prior art which simply relies on the thickness of concrete to shield radiation, it can more accurately and effectively protect specific radiation types, maximize the utilization rate of materials, and thus make the shielding device compact in structure, small in footprint, can shorten the construction period, and have stronger protection capability.

[0043] In the embodiment of the utility model, the inner shielding plate 11, the outer shielding plate 12 and the top shielding plate 21 can be made of radiation-proof cement mortar. Among them, the radiation-proof cement mortar is also called radiation-proof cement mortar, atomic energy protection mortar, shielding mortar, nuclear reactor mortar or heavy mixed mortar, etc., and the BaSO4 content is required to be not less than 80%.

[0044] Specifically, the inner shielding plate 11, the outer shielding plate 12 and the top shielding plate 21 are modularly designed, the inner shielding plates 11 of the four side shielding walls 1 are detachably connected, the outer shielding plates 12 of the four side shielding walls are detachably connected, and the top shielding plate 21 is detachably connected to the inner shielding plates 11 and the outer shielding plates 12 of the four side shielding walls. The modular design of the inner shielding plate 11, the outer shielding plate 12 and the top shielding plate 21 can form high-strength factory prefabricated parts, which are convenient for plugging and connection, and do not require on-site cutting, air jetting, drainage, concrete curing and other processes, which can make construction simpler and faster, improve installation efficiency, and be more environmentally friendly. At the same time, they can be disassembled, moved and reassembled, and can be reused.

[0045] In the embodiment of the utility model, the first lead structure layer 13 and the second lead structure layer 22 can be formed by stacking multiple lead blocks layer by layer, and the lead blocks in the first lead structure layer 13 and the second lead structure layer 22 are arranged in a staggered manner; the lead blocks can shield X-rays, and the lead blocks in the first lead structure layer 13 and the second lead structure layer 22 are arranged in a staggered manner layer by layer, which can prevent X-rays from passing through the gap between the two lead blocks. Specifically, the sizes of the multiple lead blocks in the first lead structure layer 13 and the second lead structure layer 22 can be different, which is convenient for the staggered arrangement of the lead blocks layer by layer; the lead blocks stacked in the first lead structure layer 13 and the second lead structure layer 22 can be stacked in at least two layers to prevent radiation leakage. Among them, the stacking height of the first lead structure layer 13 can be set according to the actual emission of the radiation of the CT detection equipment A and the layout of the detection room, etc., and is not limited here. The second lead structure layer 22 can cover the entire sealed space and can effectively shield the radiation.

[0046] In the embodiment of the utility model, the first concrete shielding layer 14 and the second concrete shielding layer 23 can be formed by stacking multiple shielding blocks layer by layer, and the shielding blocks in the first concrete shielding layer 14 and the second concrete shielding layer 23 are arranged in a staggered manner. Among them, the shielding blocks can be marble blocks made of fired concrete, which can shield neutron rays and a small amount of X-rays. The shielding blocks in the first concrete shielding layer 14 and the second concrete shielding layer 23 are arranged in a staggered manner layer by layer, which can prevent neutron rays and X-rays from passing through the gap between the two shielding blocks. Specifically, the sizes of the multiple shielding blocks in the first lead structure layer 13 and the second lead structure layer 22 can be different, which is convenient for the staggered arrangement of the shielding blocks; the shielding blocks stacked in the first concrete shielding layer 14 and the second concrete shielding layer 23 can be stacked in at least two layers to prevent radiation leakage.

[0047] Specifically, the gaps formed by the stacking of lead blocks and shielding blocks in the side shielding wall 1 can be filled with sand, and the gaps formed by the stacking of lead blocks and shielding blocks in the top shielding wall 2 can be filled with sand. Sand can shield neutron rays, and filling the gaps in the stacking structure of lead blocks and shielding blocks with sand can effectively shield the rays and prevent them from leaking out of the shielding device.

[0048] Specifically, during the construction of the above-mentioned four side shielding walls 1, the inner shielding plate 11 and the outer shielding plate 12 can be first plugged in and built, and then the lead blocks, shielding blocks and sand can be filled between the inner shielding plate 11 and the outer shielding plate 12 to form a first lead structure layer 13 and a first concrete shielding layer 14; and during the construction of the above-mentioned top shielding wall 2, the top shielding plate 21 can be first plugged in and built on the four side shielding walls 1, and the top shielding plate 21 can have a filling groove, and the filling groove can be filled with lead blocks, shielding blocks and sand to form a second lead structure layer 22 and a second concrete shielding layer 23.

[0049] Specifically, all components and materials of the side shielding wall 1 and the top shielding wall 2 can be prefabricated in the factory, without the need for on-site cutting, jetting, drainage, concrete curing and other processes, so the construction is simpler, faster and more environmentally friendly. At the same time, it can be disassembled, moved and reassembled, and the entire structure can be reused. When the detection room needs to be relocated, compared with the need to re-pour concrete in the prior art, it can avoid repeated investment in public facilities and save construction costs.

[0050] In the embodiment of the utility model, Figure 1 and 2 As shown, the four side shielding walls 1 include a forward protective wall 101, a rear protective wall 102 and two lateral protective walls 103. The forward protective wall 101 is used to be arranged facing the ray emission direction of the CT detection equipment A, the rear protective wall 102 is used to be arranged facing away from the ray emission direction of the CT detection equipment A, and the two lateral protective walls 103 are used to be arranged on both sides of the CT detection equipment A; wherein, the thickness of the first lead structure layer 13 in the forward protective wall 101 along the first direction is greater than the thickness of the first lead structure layer 13 in the lateral protective wall 103 along the second direction, and the thickness of the second lead structure layer 22 in the lateral protective wall 103 along the second direction is greater than the thickness of the first lead structure layer 13 in the rear protective wall 102 along the first direction; the first direction is parallel to the ray emission direction of the CT detection equipment A, and the second direction is perpendicular to the first direction.

[0051] Among them, Figure 2As shown, the CT detection device A may include a ray emitter A1 and a detector A2. The ray emitter A1 can emit the detection ray in a preset direction through the action of a collimator and an accelerator. In this way, the ray emitter A1 uses the attenuation law and distribution of X-rays or gamma rays with a certain energy and intensity emitted by radioactive nuclides or other radiation sources in the detected object, and it is possible for the detector A2 to display the detailed information inside the object, and finally display it in the form of an image using computer information processing and image reconstruction technology. In this embodiment, according to the intensity of the rays received by each side shielding wall 1, it can be set that the thickness of the first lead structure layer 13 in the forward protection wall 101 is greater than the thickness of the first lead structure layer 13 in the lateral protection wall 103, and the thickness of the first lead structure layer 13 in the lateral protection wall 103 is greater than the thickness of the first lead structure layer 13 in the back protection wall 102, so as to accurately shield and protect the CT detection device A in all directions and ranges. In addition, the thickness of the first concrete shielding layer 14 in the lateral protective wall 103 can be smaller than the thickness of the first concrete shielding layer 14 in the forward protective wall 101 and the thickness of the first concrete shielding layer 14 in the back protective wall 102, the thickness of the second lead structure layer 22 in the top shielding wall 2 can be smaller than the thickness of the first lead structure layer 13 in the forward protective wall 101, and the thickness of the second concrete shielding layer 23 in the top shielding wall 2 can be smaller than the thickness of the first concrete shielding layer 14 in the side shielding wall 1.

[0052] During the actual construction of the above-mentioned shielding device, the specific specifications and dimensions of the four side shielding walls 1 and the top shielding wall 2 can be determined according to actual conditions, and are not limited here. For example, in the four side shielding walls 1, the thickness of the first lead structure layer 13 of the forward protective wall 101 can be 400mm, and the thickness of the first concrete shielding layer 14 can be 2200mm, the thickness of the first lead structure layer 13 of the back protective wall 102 can be 150mm, and the thickness of the first concrete shielding layer 14 can be 2200mm, the thickness of the first lead structure layer 13 of the lateral protective wall 103 can be 100mm, and the thickness of the first concrete shielding layer 14 can be 1600mm, the thickness of the second lead structure layer 22 of the top shielding wall 2 can be 200mm, and the thickness of the second concrete shielding layer 23 of the top shielding wall 2 can be 1000mm.

[0053] In an embodiment of the utility model, the above-mentioned back-facing protective wall 102 may have a door opening, and the door opening 15 may be used for the entry and exit of workpieces and staff. An openable and closable protective door 3 may be installed at the door opening 15, and the protective door 3 is used to shield the rays emitted by the CT detection equipment A. Specifically, the above-mentioned protective door 3 may be an electric translation type, and the protective door 3 may be a lead steel structure, and the shielding capacity may be 250mmPb. The dimensions of the above-mentioned door opening and protective door 3 may be determined according to actual conditions, and are not limited here. For example, the dimensions of the door opening may be set to be 2.2m wide and 2.6m high, and the protective door 3 may be 2.6m wide and 3.0m high, and the overlap amount of the edge of the protective door 3 at the door opening with the back-facing protective wall 102 may be not less than 20cm.

[0054] The utility model embodiment also provides a detection room, such as Figure 3 and Figure 4 As shown, it includes a detection room 200 and an equipment room 300 and an operation room 400 located on one side of the detection room. The detection room 200 includes an outer wall 201 and any one of the shielding devices 100 provided by the above technical solution. The outer wall 201 encloses the inner space of the detection room, and the shielding device 100 is located in the inner space;

[0055] Equipment room 300 includes power cabinet and water cooling system;

[0056] The operating room 400 includes an operating table and a control system, and the control system is connected to the operating table, the shielding device and the CT detection equipment A by signals.

[0057] The detection room provided by the embodiment of the utility model includes a detection room 200 and an equipment room 300 and an operation room 400 located on one side of the detection room. Any shielding device 100 provided in the above technical solution can be set in the detection room 200. The shielding device 100 can more accurately and effectively protect specific types of radiation, maximize the utilization rate of materials, and thus make the shielding device compact in structure, small in footprint, shorten the construction period, and have stronger protection capabilities.

[0058] Specifically, the outer wall 201 of the above-mentioned detection room 200 may have an access door 202 corresponding to the protective door 3, which is convenient for the staff to enter and exit. In the above-mentioned equipment room 300, the power cabinet can provide power for the detection room and the operation room, the water cooling system can be used to cool the CT detection equipment A, and the equipment room also has an access door for the staff to enter and exit, and the equipment room can be located inside the operation room. In the above-mentioned operation room 400, there may be a ray source switch button on the operating table, and the operating table can control the CT detection equipment A and the protective door 3 in the shielding device through the control system to realize the start and stop of the CT detection equipment A and the opening and closing of the protective door 3. In addition, there may be a maze 401 in the operation room, and the maze 401 can be connected to the area between the shielding device and the outer wall of the detection room. The maze 401 can be set near the protective door 3 to facilitate the staff to enter the maze and avoid radiation radiation; the operation room also has an access door for the staff to enter and exit.

[0059] In this embodiment, the net length of the detection room along the ray emission direction of the CT detection equipment A may be 7.2 m, the net width may be 4.6 m, and the net height may be 4.0 m.

[0060] In the embodiment of the utility model, the above-mentioned detection room also includes a plurality of radiation detectors, a plurality of working status indicator lights and an ionizing radiation warning sign;

[0061] The above-mentioned multiple radiation detectors may be located at different positions inside and outside the shielding device, and are used to detect the radiation intensity in different areas in the detection room 200;

[0062] The above-mentioned multiple status indicator lights can be respectively arranged at different positions inside and outside the shielding device to indicate the working status of the CT detection device A; specifically, the status indicator lights can be arranged on the forward protection wall 101 and the lateral protection wall 103 inside the shielding device, which can be convenient for the staff in the operation room to observe, and the status indicator lights can be arranged on the area near the protection door 3 on the back protection wall 102 outside the shielding device, which can be convenient for the staff outside the protection door 3 to observe;

[0063] The above-mentioned ionizing radiation warning sign is arranged on the outside of the shielding device; specifically, the ionizing radiation warning sign can be arranged outside the shielding device in an area close to the protective door 3 facing away from the protective wall 102, so as to remind the staff. In addition, an ionizing radiation warning sign can also be arranged on the CT detection equipment A, and an access door 202 can be arranged on the outer wall of the detection room, and an ionizing radiation warning sign can also be arranged on the outer side of the outer wall in an area close to the access door 202.

[0064] The above-mentioned control system is connected with the radiation detector and the working status indicator light signal; specifically, the signal can be transmitted to the control system through the radiation switch button, and the control system can control the start and stop of the CT detection equipment A, and can correspondingly control the state of the working status indicator light, so that the staff can understand the working state of the CT detection equipment A and realize the interlocking of the CT detection equipment A and the working status indicator light; and the data detected by the radiation detector can be transmitted to the control system, and the control system can analyze whether the working state of the CT detection equipment A is normal according to the data of the radiation detector, and then control the CT detection equipment A. For example, the data detected by the radiation detector shows that the CT detection equipment A is working abnormally, and the control system can force the CT detection equipment A to stop running, and control the opening and closing of the protective door 3 to avoid safety accidents.

[0065] In the embodiment of the utility model, the above-mentioned detection room may also include a plurality of emergency stop buttons, which are respectively arranged on both sides of the CT detection equipment A, the inside of the shielding device, the outside of the shielding device, the electric control box in the equipment room, and the operating table; the plurality of emergency stop buttons are connected to the control system signal. When the staff observes that the CT detection equipment A is abnormal, they can press the emergency stop button, and control the CT detection equipment A to be forced to stop through the control system. They can also realize safety interlocking of the CT detection equipment A, the protective door 3, the emergency stop button, the radiation source switch button, etc., and various safety protection and emergency devices to prevent personnel from operating incorrectly, improve the safety level, and avoid safety accidents.

[0066] Specifically, the above-mentioned testing room may also include an intercom device between the testing room and the operating room to facilitate dialogue and communication between the staff in the testing room and the operating room.

[0067] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A shielding device, characterized in that: Applicable to high-energy CT detection room, including four side shielding walls and a top shielding wall, the four side shielding walls and the top shielding wall cooperate to enclose a sealed space for placing CT detection equipment; The side shielding wall is vertically arranged on the ground, and the four sides of the side shielding walls are connected in sequence to form a rectangular space. The side shielding wall includes an inner shielding plate, an outer shielding plate and an intermediate shielding layer. The inner shielding plate is adjacent to the sealed space, and the outer shielding plate is located on the side of the inner shielding plate away from the sealed space. The intermediate shielding layer is filled between the inner shielding plate and the outer shielding plate. The intermediate shielding layer includes a first lead structure layer and a first concrete shielding layer. The first lead structure layer is arranged adjacent to the inner shielding plate, and the first concrete shielding layer is located on the side of the first lead structure layer away from the inner shielding plate. The top shielding wall is located on the side of the four side shielding walls away from the ground and is connected to the four side shielding walls. The top shielding wall includes a top shielding plate, a second lead structure layer and a second concrete shielding layer. The top shielding plate is arranged on the side of the side shielding wall away from the ground, the second lead structure layer is located on the side of the top shielding plate away from the side shielding wall, the second concrete shielding layer is located on the side of the second lead structure layer away from the top shielding plate, the first lead structure layer and the second lead structure layer are used to at least shield X-rays, and the first concrete shielding layer and the second concrete shielding layer are used to at least shield neutron rays.

2. The shielding device according to claim 1, characterized in that The inner shielding plate, the outer shielding plate and the top shielding plate are made of radiation-proof cement mortar.

3. The shielding device according to claim 1, characterized in that: The inner shielding plate, outer shielding plate and top shielding plate are modularly designed. The inner shielding plates of the four side shielding walls are detachably connected, the outer shielding plates of the four side shielding walls are detachably connected, and the top shielding plate is detachably connected to the inner shielding plates and outer shielding plates of the four side shielding walls.

4. The shielding device according to claim 1, characterized in that The first lead structure layer and the second lead structure layer are formed by stacking a plurality of lead blocks layer by layer, and the lead blocks in the first lead structure layer and the second lead structure layer are arranged in a staggered manner; The first concrete shielding layer and the second concrete shielding layer are formed by stacking a plurality of shielding blocks layer by layer, and the shielding blocks in the first concrete shielding layer and the second concrete shielding layer are arranged in a staggered manner.

5. The shielding device according to claim 4, characterized in that: The gaps formed by the stacking of lead blocks and shielding blocks in the side shielding wall are filled with sand; The gaps formed by the stacking of lead blocks and shielding blocks in the top shielding wall are filled with sand.

6. The shielding device according to claim 1, characterized in that The four side shielding walls include a forward protective wall, a rear protective wall and two lateral protective walls, wherein the forward protective wall is used to be arranged facing the ray emission direction of the CT detection equipment, the rear protective wall is used to be arranged facing away from the ray emission direction of the CT detection equipment, and the two lateral protective walls are used to be arranged on both sides of the CT detection equipment; The thickness of the first lead structure layer in the forward protective wall along the first direction is greater than the thickness of the first lead structure layer in the lateral protective wall along the second direction, and the thickness of the second lead structure layer in the lateral protective wall along the second direction is greater than the thickness of the first lead structure layer in the backward protective wall along the first direction; The first direction is parallel to the radiation direction of the CT detection device, and the second direction is perpendicular to the first direction.

7. The shielding device according to claim 6, characterized in that The back-facing protective wall has a door opening, and an openable and closable protective door is installed at the door opening. The protective door is used to shield the rays emitted by the CT detection equipment.

8. A testing room, characterized in that: The invention comprises a detection room and an equipment room and an operation room located on one side of the detection room, wherein the detection room comprises an outer wall and a shielding device according to any one of claims 1 to 7, wherein the outer wall encloses an inner space of the detection room, and the shielding device is located in the inner space; The equipment room includes a power cabinet and a water cooling system; The operating room includes an operating table and a control system, and the control system is signal-connected with the operating table, the shielding device and the CT detection equipment.

9. The detection room according to claim 8, characterized in that: It also includes a plurality of radiation detectors, a plurality of working status indicator lights and an ionizing radiation warning sign; The plurality of radiation detectors are located at different positions inside and outside the shielding device, and are used to detect the radiation intensity in different areas of the detection room; A plurality of status indicator lights are respectively arranged at different positions inside and outside the shielding device to indicate the working status of the CT detection equipment; The ionizing radiation warning sign is arranged on the outer side of the shielding device; The control system is connected with the radiation detector and the working status indicator light by signal.

10. The detection room according to claim 9, characterized in that: It also includes a plurality of emergency stop buttons, which are respectively arranged on both sides of the CT detection equipment, the inside of the shielding device, the outside of the shielding device, the electric control box in the equipment room, and the operating table; The plurality of emergency stop buttons are connected to the control system signal.

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