22 results about "Radiation Leak" patented technology

The radiation protection head and neck sleeve convenient to wear comprises a head protection part, a neck protection part is integrally formed at the lower end of the head protection part, a neck opening extending to the head protection part is formed in the front side of the neck protection part, a zipper is arranged in the neck opening, and the neck protection part is connected with the head protection part. A face opening is formed in the surface of the front side of the head protection part, a face protection part is arranged in the face opening, the head protection part and the neck protection part are both made of flexible materials, the head protection part and the neck protection part are integrally formed, and the neck opening is combined with the convenient wearing and taking-off design of a zipper, so that the pillow is matched with the physiological structure of the head and the neck of a human body; the wearing efficiency is improved, the key areas of the head and the neck can be fully covered through the integrated structure, the radiation leakage risk is reduced, and the comprehensiveness of radiation protection and the wearing convenience are balanced.

The invention relates to the technical field of radiation protection, and particularly discloses a lead-free ray protection plate partition wall which comprises a protection plate unit, and the protection plate unit comprises two outer display layers and a lining layer clamped between the two outer display layers; the top of the wall body is provided with a bendable top layer plate, and the adjacent protection plate units are connected through an outer side plate. According to the invention, the protective cover which can be detached in a segmented manner and the bendable top layer plate are arranged, and the extension blocks which can be flexibly adjusted are matched, so that the wall body can be smoothly bent at any radian and precisely shaped on site according to actual requirements; a traditional prefabricated right-angle component is completely replaced, the adaptability of the partition wall to complex and non-standard space layout is greatly improved, the risk of radiation leakage at the corner is fundamentally eliminated by forming continuous and seamless arc transition, and unification of the protection performance and the design freedom degree is achieved.

The utility model relates to the technical field of anti-radiation wallboards, and discloses an anti-radiation wallboard installation accessory which comprises a plurality of transverse installation assemblies, each transverse installation assembly comprises a transverse keel, a plurality of transverse pressing plates are detachably arranged on the transverse keels, a plurality of vertical installation assemblies are arranged between every two adjacent transverse keels, and the transverse pressing plates are detachably arranged on the vertical installation assemblies. The vertical mounting assembly comprises a vertical keel, and a plurality of vertical pressing plates are detachably arranged on the vertical keel; through cooperative use of the anti-radiation wall plate, the transverse mounting assembly, the vertical mounting assembly, the bolts and the positioning holes, the transverse pressing plate and the vertical pressing plate are fixed to the vertical keel through the bolts, and a rectangular limiting frame fixed in a lossless mode is formed. The transverse keels and the vertical keels adopt the E-shaped middle thickening design, enough screwing depth is provided, the keels do not need to penetrate through, the staggered design of mounting point position holes is ensured, radiation leakage is prevented, and the effects of being good in protection performance and convenient and fast to mount are achieved.

The invention discloses a protective device in radiopharmaceutical transportation. The protective device comprises an outer frame, an inner frame and a sealing cover, a plurality of connecting rods are fixedly connected between the circumferential inner wall of the outer frame and the circumferential outer wall of the inner frame, a plurality of fixing rods are fixedly connected between the bottom inner wall of the outer frame and the bottom outer wall of the inner frame, a first solution cavity is formed between the circumferential outer wall of the outer frame and the circumferential outer wall of the inner frame, and the bottom of the sealing cover is in threaded connection with the top ends of the outer frame and the inner frame. Sealing rings are fixedly mounted at the top ends of the outer frame and the inner frame; an annular first solution cavity between an outer frame and an inner frame and a second solution cavity in a sealing cover are communicated through a through groove in the bottom of the sealing cover to form a three-dimensional liquid protective layer surrounding the inner frame, so that a protective solution can wrap the inner frame loaded with radiopharmaceuticals from the side wall and the top in all directions, and the radiopharmaceuticals are protected from being damaged. A continuous and homogeneous shielding barrier is formed, and the risk of radiation leakage caused by splicing gaps of a traditional solid shielding material is avoided.

The invention discloses a radioactive particle protection implanting device for tumor treatment. The radioactive particle protection implanting device comprises an implanting gun body, a puncture needle, a loading assembly and a push rod matched with the puncture needle. The loading assembly is detachably installed on the surface of the implantation gun body, a bullet loading box and a rotatable rotating wheel are arranged in the loading assembly, a loading groove is formed in the periphery of the rotating wheel, and through holes are formed in the surface of the shielding protection plate and used for achieving one-by-one alignment and shielding protection of radioactive particles. A trigger, a fixed assisting block, a movable assisting block, an elastic piece and an engaging lug are arranged in the implantation gun body, the push rod is driven to linearly advance through the connecting rod and the sliding lug, one-way limiting is achieved under the clamping action of the engaging lug, and reverse sliding of the push rod is prevented. The guide cylinder is used for guiding the push rod to enter the puncture needle and accurately implanting particles into tumor tissue. The device is provided with a rotary missile cabin type protection structure, an anti-non-return gun type propelling structure and a detachable modular loading assembly, radiation leakage can be effectively avoided, it is guaranteed that particle implantation is accurate and reliable, replacement is rapid, and the device has high clinical application value.

To prevent radiation leaking from shielding measures from reaching specific areas. [Solution] The electron beam irradiation device (100) comprises an electron beam generator (4) that generates an electron beam, a transport cylinder (5) that transports the paper (P) so that it passes through the irradiation area (IR) irradiated by the electron beam by holding and rotating a part of the paper (P) to be irradiated by the electron beam, a shielding structure (8) provided around the irradiation area (IR) in the transport cylinder (5) to shield the radiation, and a guide structure (10) that guides the radiation leaked from the end of the shielding structure (8) in a specified direction.

1. The name of the design product: radiation leakage test tool. 2. The use of the design product: for testing the radiation leakage of X-ray detection device. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The utility model relates to after-loading radiotherapy equipment. The after-loading radiotherapy equipment comprises an after-loading radiotherapy device which is used for conveying a stored radioactive source into the body of a target object; the radiotherapy bed comprises a bed plate used for supporting a target object; and the shielding structure is used for sealing the afterloading radiotherapy device and the bed plate in the internal space of the shielding structure so as to prevent radiation of the radioactive source from leaking to the outside. Therefore, the after-loading radiotherapy equipment can be deployed in a small or non-fixed site, and can be quickly deployed.

The invention discloses fault disinfection and preservation equipment and method applied to a customs cold chain, and belongs to the field of customs cold chain food treatment. According to the technology, geometric and internal density characteristics of food are accurately obtained through an AI visual identification unit of laser three-dimensional modeling and X-ray density imaging; the AI system dynamically regulates and controls double electron beam parameters (the power is 5-12MeV, and the beam intensity is 1-5mA) and the speed of a conveyor belt based on deep learning and a Monte Carlo algorithm; the double electron beams adopt a 180-degree opposite emission layout with the distance larger than 10 meters, each emitter is provided with an independent protection fortress, energy is superposed in the food center to achieve deep disinfection of 20-40 cm, and the dose uniformity error is smaller than 5%. The treatment efficiency of the equipment reaches 20 tons / hour, the radiation leakage is less than 0.5 mu Sv / h, the preservation time of fruits is more than 3 months, the preservation time of vacuum low-temperature beef is more than 6 months, the equipment is adaptive to the'instant inspection and release 'process of customs, the problems of incomplete disinfection, short preservation time and low efficiency in the traditional technology are solved, and the equipment is suitable for cross-border cold chain large-scale treatment.

The utility model discloses an easy-to-install radiation shielding device for a pipeline tee joint, which is provided with a hollow cavity matched with the pipeline tee joint, is provided with three pipe orifices corresponding to the pipeline tee joint in position, and comprises a first shielding piece and a second shielding piece which are oppositely arranged, the first shielding piece and the second shielding piece are hinged and can be opened through relative rotation or locked after being butted; the first shielding piece and the second shielding piece are both of a layered structure and comprise a protective layer, a reinforcing layer and a shielding layer which are sequentially arranged from outside to inside. According to the radiation shielding device for the pipeline three-way joint, the shielding device is more attached to the three-way pipe fitting, the sealing performance of the interface is better, mounting and dismounting are more convenient, and the risk of radiation leakage is reduced.

The invention provides a beam limiting device and a control method thereof, and electronic equipment, and the device comprises a blade assembly which comprises a plurality of blades which are in lap joint with each other, and are disposed in the same plane in a single layer; the first-layer rotary table and the second-layer rotary table are coaxially arranged; the blade assembly is arranged between the first-layer rotating disc and the second-layer rotating disc through the guide structure, a radiation field opening is formed through opening and closing of the blade assembly so as to limit the range of a ray beam, the inherent defects of a multi-layer blade beam limiting device in the prior art are overcome, the radiation leakage risk caused by interlayer assembly gaps is remarkably reduced, and the service life of the multi-layer blade beam limiting device is prolonged. The single-layer layout greatly reduces the axial space required by the opening and closing of the blades, so that the overall structure of the beam limiting device is more compact and light, a foundation is laid for the miniaturization design of equipment such as a movable C-shaped arm X-ray machine, the reliability and stability of equipment operation are further improved, a control system is simplified, and the overall cost from research and development to production is reduced.

The utility model relates to the technical field of radiation equipment, in particular to radiation protection equipment for the radiology department, which comprises an isolation unit and a floating limiting unit. The isolation unit comprises a first isolation mechanism, a second isolation mechanism and a third isolation mechanism, the first isolation mechanism is arranged on the left side of the door opening, the second isolation mechanism is arranged on the right side of the door opening, and opposite L-shaped sealing structures are arranged on the right side of the first isolation mechanism and the left side of the second isolation mechanism correspondingly; the third isolation mechanism is arranged on the outer surface of the second isolation mechanism; the floating limiting unit comprises an overturning fastening mechanism, the overturning fastening mechanism comprises an overturning baffle and a pressure head assembly, connecting pieces are arranged on the two sides of the overturning baffle, the connecting pieces are fixedly connected with the outer surface of the first isolation mechanism, and the pressure head assembly is fixedly connected with the overturning baffle. According to the utility model, no gap is left between the two door plates, and the risk of radiation leakage is reduced.

The application discloses a radiation type leaky coaxial cable flame-retardant sheath structure and a manufacturing method. The radiation type leaky coaxial cable flame-retardant sheath structure comprises an inner sheath and an outer sheath, the outer sheath is sleeved on the inner sheath and abuts against the inner sheath, and the inner sheath is an inorganic filling type flame-retardant polyolefin sheath, and the outer sheath is a chemical expansion type flame-retardant sheath. The inner sheath combustion shell formation is greatly improved, a carbon shell is formed after the inner sheath is burned when the leaky coaxial cable is burned, the carbon shell can isolate the flame from entering the inside of the leaky coaxial cable, the outer sheath has high flame-retardant efficiency, meanwhile, good mechanical physical properties can be kept, and the flame-retardant performance of the flame-retardant sheath can be improved.

The invention provides a black phosphorene tetramer metasurface refractive index sensor which comprises a plurality of tetramer metasurface units composed of dielectric substrates and tetramer structures, and the tetramer structures comprise rectangular black phosphorene patches. The rectangular black phosphorene patch adopts an in-plane asymmetric micro-perturbation structure with unequal sizes in the directions of the armchair shaft and the zigzag shaft, and the upper surface of the rectangular black phosphorene patch is provided with a medium cavity filled with a to-be-detected medium. The rectangular black phosphorene patch in the tetramer structure adopts an in-plane asymmetric micro-perturbation structure with low absorption loss as a dielectric material, so that radiation leakage of energy can be reduced, and meanwhile, the defect that the fano resonance line width is relatively wide due to metal plasma related intrinsic loss and additional damping of a mixed mode is eliminated; the two-dimensional sheet structure is easier to form strong near-field coupling and energy localization mainly based on surface current, radiation leakage of energy can be reduced, the in-plane asymmetric perturbation characteristic can improve the consistency of two orthogonal polarization resonance responses, and the detection precision is improved.

The application provides a multi-directional radiation leakage coaxial cable, which comprises an inner conductor, an insulating layer, an outer conductor and a sheath which are coaxially nested in sequence from inside to outside, and at least two rows of slot groups are arranged on the outer conductor, the at least two rows of slot groups are distributed at different angles in the circumferential direction of the outer conductor, each row of slot groups comprises a plurality of slot arrays arranged periodically along the axial direction of the outer conductor, each slot array comprises a plurality of slots, the pitches of the slot groups are the same, the periodic arrangement of the two adjacent slot groups in the circumferential direction is different by half a pitch, and the phases of the respective excited electric fields are different by 180 degrees. The application can realize source separation in space by arranging the plurality of slot groups and making the two adjacent slot groups in the circumferential direction different by half a pitch and the phases of the excited electric fields different by 180 degrees, so that the sources are independent and do not interfere with each other, thereby increasing the number of radiation directions of all frequency points in the working frequency band of the leakage cable and making the leakage cable have stronger application scene applicability.

A radiation-absorbent shield shaped to conform to and enshroud the x-ray tube housing of a C-arm in order to protect medical personnel from radiation leaking through the x-ray tube housing. The shield is attached to the x-ray tube housing such that it moves with the tube housing and provides protection no matter the orientation of the C-arm. C-arm. 20 26 20 48 75 23 J un 2 02 6 2 0 2 6 2 0 4 8 7 5 2 3 J u n 2 0 2 6 C - a r m .

The invention belongs to the technical field of detection equipment, and particularly relates to a radiation protection device for indoor detection and a protection method. The device comprises a base which is provided with a detection mechanism used for detecting a pipeline welding seam; the detection mechanism comprises a detection assembly and a pair of protection assemblies located on the two sides of the detection assembly. Wherein the detection assembly comprises a rotatable annular track, a lifting rod is fixedly connected to the inner side of the annular track, a lifting block is fixedly connected to the lower end of the lifting rod, and a detection probe is installed on the lifting block; the protection assembly comprises an annular frame, the surface of the annular frame is rotationally connected with a rotating disc, a plurality of arc-shaped holes are evenly formed in the surface of the rotating disc in the circumferential direction, and sliding holes in one-to-one correspondence with the arc-shaped holes are formed in the annular frame. Through the protection structures at different positions of the first lead plate and the second lead plate, rays emitted by the detection probe can be effectively absorbed and shielded, radiation leakage is reduced, and the safety of operators is protected.

The utility model relates to the technical field of radioactive liquid medicine split charging, in particular to a radioactive liquid medicine split charging instrument which comprises a first split charging main machine, a second split charging main machine is arranged on the right side of the first split charging main machine, and a protective shielding mechanism is arranged between the second split charging main machine and the first split charging main machine. The protection shielding mechanism comprises a main shielding box, two sets of auxiliary shielding boxes matched with the main shielding box in specification are symmetrically arranged on the left side and the right side in the main shielding box, the auxiliary shielding boxes can slide left and right in the main shielding box, a main shielding cover plate is assembled at the front end of the main shielding box through bolts, and auxiliary shielding cover plates are assembled at the front ends of the auxiliary shielding boxes through bolts. Two groups of lug plates are fixedly arranged at the positions, close to the outer side edges, of the rear side surfaces of the two groups of auxiliary shielding boxes, and a plurality of groups of uniformly-arranged pipe grooves of U-shaped structures are formed in the outer side surfaces of the two groups of auxiliary shielding boxes. By means of the protective shielding structure, the risk of radiation leakage of liquid medicine in the infusion pipeline to operators and the environment in the infusion process can be effectively reduced, and the safety of the operation environment is improved.

The utility model relates to a fastening device which comprises a first fastening piece, a second fastening piece and a connecting piece. The first fastening piece and the second fastening piece are used for being inserted into holes in an anti-radiation wall body so as to fix an object; wherein the connecting piece is connected with the first fastening piece and the second fastening piece in a manner that a gap is formed between the first fastening piece and the second fastening piece; the space at the interval is used for being filled with anti-radiation materials so as to prevent radiation from penetrating through holes in the wall body. Compared with the prior art, the first fastening piece and the second fastening piece penetrate through the holes in the wall body to fix objects on the wall, the first fastening piece and the second fastening piece are connected through the connecting piece, the interval is reserved between the first fastening piece and the second fastening piece, and after concrete is poured, the interval is filled with the concrete, so that the objects on the wall are fixed. Radiation can be absorbed and blocked by the concrete body in the interval in the process that the first fastener transmits towards the second fastener or the opposite direction of the first fastener, and then radiation leakage at the hole of the wall body is reduced.

The application relates to a clamping antenna asynchronous uplink and downlink transmission method, which is suitable for a clamping antenna system equipped with a single waveguide or multiple waveguides, aims to solve the problem of inter-antenna radiation leakage during uplink signal transmission, and realizes near full-duplex collaborative communication by asynchronously and independently controlling the working modes of the waveguides without changing the hardware. The application is realized through the following steps: firstly, a base station assembles working modes for each waveguide asynchronously according to global and local state information, and sends clamping antenna activation instructions to each waveguide; secondly, each waveguide reconstructs the clamping antenna according to the instructions, only activates a single designated antenna in the uplink mode, and can activate a single or multiple antennas in the downlink mode; finally, the base station globally monitors the transmission state, and starts a new round of scheduling cycle when the conditions are met.

The invention relates to a vehicle (1) with a lidar sensor (5) positioned behind a windshield (7) of the vehicle (1) in the vehicle interior (3), wherein the radiation (9) emitted by the lidar sensor (5) passes through a transparent surface of the windshield (7). In a vehicle with a lidar sensor, the range of the lidar sensor can be increased without endangering persons in or around the vehicle.To prevent the lidar sensor (5), which emits radiation (9) with a radiation power above a predetermined eye safety threshold, is provided with a capsulation (13) encompassing the lidar sensor (5) and sealing against the windshield (7) to protect against escaping radiation. This capsulation (13) can be monitored by a monitoring unit (17) for a malfunction, in particular a mechanical destruction of the windshield (7) and / or capsulation (13). The monitoring unit (17) is coupled to monitoring electronics (19) controlling the lidar sensor (5) for the purpose of detecting a malfunction.