365 results about "Radiation shield" patented technology

The invention provides a samarium / europium / gadolinium-containing zirconium hydride block as well as a preparation method and application thereof, and relates to the technical field of radiation shielding materials. The zirconium hydride block containing samarium / europium / gadolinium comprises the following elements in percentage by mass: 95% < = Zr < = 99.5%, 0% < = Gd < = 5%, 0% < = Sm < = 5%, 0% < = Eu < = 5% and 0% lt. Gd + Sm + Eu < = 5%. The preparation method comprises the following steps: respectively hydrogenating sponge zirconium, metal gadolinium, metal europium and metal samarium to respectively obtain corresponding hydride powder; weighing zirconium hydride powder, gadolinium hydride powder, europium hydride powder and samarium hydride powder according to a required proportion, and uniformly mixing under a protective atmosphere; and carrying out pressure sintering on the mixed powder, and carrying out secondary hydrogenation to obtain the zirconium hydride block containing samarium / europium / gadolinium. According to the invention, the absorption of the material to low-energy-segment neutrons can be obviously improved; and the preparation of the zirconium hydride block containing samarium / europium / gadolinium and the accurate regulation and control of doped elements are realized.

The invention discloses a reactor instant-slow source item radiation shielding design system and method, and relates to the field of computer aided design of reactor radiation protection. The reactor instantaneous-delayed source item radiation shielding design system comprises a model conversion module, a population construction module, an index calculation module, an individual evaluation module, a selective evolution module, a hierarchical sorting module and an iterative convergence module which are in data flow connection in sequence from front to back. The invention relates to a reactor instant-slow source item radiation shielding design method. The method comprises the following steps: model conversion; constructing a population; calculating indexes; performing individual evaluation; selecting evolution; layering and sorting; and carrying out iterative convergence. According to the invention, a radiation shielding design system covering the whole life cycle of reactor operation and shutdown is established, and collaborative breakthrough of light weight, high safety and efficient convergence is realized through a multi-objective optimization algorithm.

The invention relates to an intelligent design method of a radiation shielding material based on cross-scale error feedback lock step, which comprises the following steps: determining a material component set and acquiring an atomic-scale graph structure of the material component set, and extracting intrinsic performance parameters such as heat conductivity and attenuation coefficient through an atomic-scale prediction module; and then, constructing a design variable vector in combination with a multi-physical field condition, calculating equivalent performance parameters of the composite material, establishing a cross-scale lock step mechanism, and triggering a molecular dynamics and Monte Carlo recalculation module to carry out correction when the deviation between a predicted value and a mesoscopic recalculation result exceeds a limit. Based on the correction parameters, a candidate material scheme is generated by using a multi-objective optimization algorithm; and performing gamma-ray and neutron shielding performance simulation on the candidate schemes through a Monte Carlo radiation transfer model accelerated by a deep neural network, and comparing with an experimental result to realize self-adaptive material design driven by cross-scale errors. According to the method, the design precision and efficiency of the radiation shielding material are remarkably improved.

A system configured to reduce scatter radiation around a surgical table during a medical procedure that may include at least one radiation shield configured to be connected to a surgical table with an attachment mechanism, wherein the at least one radiation shield includes one or more adjustable radiation shield segments coupled or releasably coupled to the at least one radiation shield. A device may include a pump in fluid communication with the one or more adjustable radiation shield segments comprising a pneumatic channel that is configured to at least partially inflate the pneumatic channel such that at least a first portion of the at least one radiation shield extends vertically above at least a portion of the surgical table, wherein a second portion of radiation shield is configured to extend below the surgical table. A device may include a controller configured to activate the pump.

An antenna apparatus includes a radiation shield between an antenna element and at least one radio frequency integrated circuit (RFIC) coupled to the antenna element. An antenna substrate includes a first dielectric layer having opposite first and second surfaces, and a first metallization layer attached to the second surface to form a ground plane. A base substrate includes at least one second dielectric layer having opposite third and fourth surfaces, and a second metallization layer having a first side attached to the third surface and a second side attached to the first metallization layer to form the radiation shield. The RFIC is RF coupled to the antenna element through at least one via extending through the base substrate and a coupling element within aligned openings of the first and second metallization layers.

This invention provides an adjustable radiation shielding device for radiology departments, relating to the field of radiology. It includes a bed frame with a radiation shielding mechanism. The radiation shielding mechanism comprises a fixed part, a displacement winding part, an auxiliary rotating rail, a locking mechanism, and a radiation shielding cloth. The fixed part is rotatably connected to the bed frame. The displacement winding part extends to both sides of the bed frame. One end of the locking mechanism is on the fixed part, and the other end is on the displacement winding part. The auxiliary rotating rail is fixed to the lower end of the bed frame and presses against the displacement winding part. A sliding block slides on the bed frame and is connected to the displacement winding part. One end of the radiation shielding cloth is fixed to the fixed part, and the other end is wound around the displacement winding part. The displacement winding part rotates with the assistance of the auxiliary rotating rail to wind up the radiation shielding cloth and move it to the end of the bed frame. Through the locking mechanism, the fixed part and the displacement winding part are connected together, and under external drive, the cloth rotates to the lower end of the bed frame for storage.

A radiation shield assembly is described, configured to block radiation emanating from a radiation source from reaching a user. Two shields are supported by a support arm, and are configured to rotate and translate relative to one another about the support arm's longitudinal axis. This allows the shield to be easily configured and reconfigured as necessary to visualize various parts of a patient's body via radiography.

The invention provides a radiation shielding assembly, a drug vial assembly system, a method of dispensing a drug vial assembly system, and a radiopharmaceutical infusion device. The radiation shielding assembly is used for shielding a medicine bottle assembly containing radiopharmaceuticals, and the medicine bottle assembly is provided with a puncture communication piece capable of transversely moving. The shielding body is provided with a top opening, a small bottle containing cavity and a combination port, and the medicine bottle assembly is contained in the containing cavity through the top opening. The containing cavity is provided with a circumferential matching wall, the distance between the matching wall and the vertical center line is gradually decreased from the starting end to the tail end, and a moving path is provided for assembly. The medicine bottle is guided to move along the wall, and the bottom puncture communicating piece is guided to transversely move inwards and is in butt joint with the combination port when reaching the assembly completion position. After assembly is completed, the puncture communicating piece is in butt joint with the combination port. According to the invention, only one needle puncturing the top of the medicine bottle is used as an inflow channel. Needle adjustment is not needed when medicine is nearly empty, operation is simplified, and the error rate is reduced.

The invention provides a doped yttrium hydride neutron moderation material and a preparation method and application thereof, and belongs to the technical field of radiation shielding materials. At least one of samarium, europium and gadolinium is doped in yttrium hydride in the form of hydride, and the mass ratio of metal yttrium to metal gadolinium to metal europium to metal samarium is controlled, so that the neutron moderation effect of the neutron moderation material can be improved. According to the invention, at least one of gadolinium hydride, europium hydride and samarium hydride is mixed with yttrium hydride under the protective atmosphere, so that the mass content of each element in the doped yttrium hydride neutron moderation material can be accurately controlled. According to the invention, the mixture is sintered and molded, and the sintering parameters of sintering and molding are controlled, so that the components of the mixture are sintered in a compact state, cracks generated by thermal expansion and cold contraction can be reduced, and the doped yttrium hydride keeps high density and has fewer cracks and defects.

The invention discloses a radiation shielding method and a radiation shielding body based on a multi-physics field synergistic effect, and the radiation shielding body is used for shielding a neutron-gamma mixed radiation field, and the radiation shielding method based on the multi-physics field synergistic effect comprises the steps: a first stage, absorbing neutrons and gamma rays at a radiation initial position through a first composite material; in the second stage, energy spectrum adaptive attenuation is carried out on the first residual radiation passing through the first stage through a second composite material, and the amount of the second composite material is gradually decreased in a gradient mode in the radiation propagation direction; and a third stage of performing path scattering on the second residual radiation passing through the second stage through a third composite material. According to the invention, the technical problem of insufficient shielding capability caused by difficulty in adapting to the dynamic shielding requirement of a neutron-gamma mixed radiation field when a traditional anti-radiation shielding body faces the neutron-gamma mixed radiation field generated in a BNCT treatment scene is solved.

Valve (1) for closing a passage between a heating chamber (100) and a reaction chamber (120), comprising a housing part (3) forming a valve chamber (5), with a first opening (7) having a first opening edge (7a) oriented towards the heating chamber (100), and a second opening (9) having a second opening edge (9a) oriented towards the reaction chamber (120), wherein the first opening (7) and the second opening (9) together with the valve chamber (5) form a transport channel (11) between the heating chamber (100) and the reaction chamber (120) when open, and comprising a first locking flap (13) for closing the first opening (7), wherein the first locking flap (13) is pivotably arranged in the valve chamber (5) and is pivotable from an open position to a closed position, wherein the first locking flap (13) in the closed position abuts the first opening edge (7a) in a sealing manner.wherein a sealing device (17) is arranged on the first locking flap (13), which can be pressed against the first opening edge (7a) in the closed position, and with a second locking flap (19) for closing the second opening (9), wherein the second locking flap (19) is pivotably arranged in the valve chamber (5) and can be pivoted from an open position to a closed position, wherein the second locking flap (19) rests against the second opening edge (9a) on the side facing the valve chamber (5) in the closed position, wherein in the open position the second locking flap (19) is arranged in front of the first locking flap (13) in the direction of the transport channel (11) and forms a heat radiation shield for the sealing device (17) against heat radiation from the transport channel (11).

The invention discloses a composite shielding collimator suitable for a complex mixed radiation field, belongs to the technical field of radiation shielding and measurement, and mainly solves the problems of low signal-to-noise ratio, high space background and mixed energy spectrum caused by the mixed radiation field of high-energy neutrons, gamma rays and the like in a fusion device and the problem that traditional equipment is heavy and difficult to flexibly adjust. The composite shielding collimator adopts a cylindrical shielding structure formed by aluminum oxide, boron-containing polyethylene, boron carbide and lead from outside to inside, and background interference and secondary radiation are remarkably inhibited by moderating and absorbing neutrons step by step and effectively shielding gamma rays; the neutron and gamma ray detector is integrally integrated on a rotatable supporting mechanism, unification of excellent radiation shielding performance and detection flexibility is achieved, and the neutron and gamma ray detector is mainly used for high-precision neutron and gamma ray diagnosis in complex radiation environments such as a magnetic confinement fusion device.

A radiation shield assembly is described, configured to block radiation emanating from a radiation source from reaching a user. Two shields are supported by a support arm, and are configured to rotate and translate relative to one another about the support arm's longitudinal axis. This allows the shield to be easily configured and reconfigured as necessary to visualize various parts of a patient's body via radiography.

This utility model relates to the field of experimental analytical instruments technology, and discloses an easy-to-clean experimental analytical instrument, including an analyzer body. A display is fixedly connected to the top of the analyzer body, control buttons are provided on the surface of the analyzer body, a rotating shaft is fixedly connected to the top of the analyzer body, a cover is fixedly connected to the surface of the rotating shaft, a rear plate is provided at the rear of the analyzer body, and support feet are fixedly connected to the bottom of the analyzer body. A limiting plate is fixedly connected inside the analyzer body. This utility model allows the curved plate to be rotated out from inside the limiting plate by pressing the handle. Under the action of a spring, the entire placement plate is removed from inside the analyzer body, facilitating subsequent cleaning and maintenance. By incorporating a radiation shield, the radiation generated inside the analyzer body during operation is isolated inside the analyzer body, preventing harm to the human body.

A method is for forming a radiation shield around an object. The method includes providing an inorganic paint pigment comprising a fluid matrix, and paint flakes carried within the fluid matrix. Each paint flake includes a common aluminum mirror layer having a first major surface and a second major surface opposing the first major surface, a first plasmonic aluminum reflector layer carried by the first major surface, and a second plasmonic aluminum reflector layer carried by the second major surface. The method also includes coating an outer surface of the object with the inorganic paint pigment.

This allows for improved lifting and lowering operations without increasing the size of the headbox. [Solution] The solar radiation shielding device 1 comprises a shielding material, a lifting cord for raising and lowering the shielding material, a winding drum 410 for winding and unwinding the lifting cord and raising and lowering the shielding material, a first drive shaft 50 for rotating the winding drum, a second drive shaft 60 provided parallel to the first drive shaft and capable of tilting the shielding material, a first pulley 207 capable of rotating the first drive shaft, and a second pulley 302 capable of rotating the second drive shaft, wherein the first drive shaft passes through the second pulley and it is provided so as to be rotatable relative to the first drive shaft.

The invention provides a radiation shielding device and a neutron capture treatment system. The radiation shielding device comprises a shielding body, a base part and a driving device, the shielding body is movably arranged on the base part; the shielding body is provided with a first position and a second position, the first position is the position where the shielding body shields the beam outlet, and the second position is the position where at least part of the shielding body does not shield the beam outlet; the driving device is connected with the shielding body, and the shielding body can be switched between a first position and a second position through the driving device. According to the technical scheme, after a patient finishes irradiation and before a worker enters a treatment room to carry out a subsequent operation process, the position of the shielding body can be adjusted and controlled to shield the beam outlet, so that the patient and the worker are prevented from being radiated, activation of other equipment in the treatment room is avoided, and the treatment efficiency is improved. And the personal safety of patients and workers and the normal operation of equipment are ensured.

This shelter provides a centralized storage or plant cultivation area for the movable shelves during normal times, and can be moved to the side to create a large open space in the center of the living area during emergencies. [Solution] The shelter 1 comprises a structure 3 located underground with a living space formed inside, a second door 31 having a radiation shielding function for entering and exiting the living space, a ventilation device for ventilating the living space, a plurality of movable shelves 42 including wheels, and guide means installed inside the living space for moving the plurality of movable shelves 42, the guide means being a rail 41 that guides the wheels, the plurality of movable shelves 42 being movable along the rail 42, and the plurality of movable shelves 42 being configured to move between a first state where they are located in the center of the living space and a second state where they are located towards the edge of the living space.

The embodiment of the invention relates to the technical field of lubricating oil injection, and provides an automatic lubricating oil injection device and system.The device comprises a quick-change lubricating assembly, the quick-change lubricating assembly is used for being installed on equipment to be lubricated to provide lubricating oil, and the quick-change lubricating assembly comprises a quick-change main body, a feeding cavity and a discharging cavity, the feeding cavity is provided with a first discharging opening, and the first discharging opening is used for supplying lubricating oil; the first piston is arranged in the feeding cavity in a sliding mode and used for pushing out lubricating oil in the feeding cavity. The elastic piece is used for pushing the first piston to push out the lubricating oil; and the first plug is arranged at the first discharging opening and used for sealing the first discharging opening, and the first discharging opening can be opened after the first plug is inserted. According to the technical scheme, the technical problem that in the prior art, mechanical equipment lubricating liquid in a glove box and a radiation shielding operation chamber is inconvenient to add is solved.

A radiation imaging apparatus includes a radiation detection sensor configured to detect radiation, an electric circuit board, a first base including a radiation shielding member located between the radiation detection sensor and the electric circuit board, the first base being configured to support the electric circuit board, a housing containing the radiation detection sensor, the electric circuit board, and the first base in an internal space of the housing, and a first fixing portion configured to fix the first base to a back surface of the housing so that the electric circuit board faces the back surface of the housing with a gap in the internal space, wherein the first fixing portion is located in an area inside an outer periphery of the radiation shielding member in a planar view along a radiation incident direction.

The utility model relates to the technical field of radiation shielding, and particularly relates to a shielding slide rail structure of a transverse moving type radiation protection door and window, which comprises a bottom rail, a door body, and a plurality of rollers fixed to the two sides of the bottom surface of the door body. The bottom rail comprises a rail body and lead plates fixed to the two sides of the rail body, and the rail body has an upwardly protruding fitting strip. The two side walls of the fitting strip and the lead plates form a wheel groove. The lower edge of the door body has a recessed fitting groove in the middle part. The fitting strip partially extends into the fitting groove. The rollers extend into the wheel groove and enable the door body to slide along the length direction of the bottom rail. The utility model forms a multi-stage sealing characteristic of mutual alignment and cooperation between the door body and the bottom rail through the cooperation of the lead plates, the wheel groove, the fitting strip and the fitting groove. The radiation leakage prevention capability of the door gap edge is greatly improved, and the radiation leakage is effectively prevented. The utility model provides more reliable radiation protection for the use place.

This utility model discloses an automatic welding device for radiation shielding panels, including an operation panel. A vertical plate is symmetrically arranged on the upper surface of the operation panel, and a first electric telescopic rod is symmetrically arranged on the opposite outer surface of the vertical plate. One end of the first electric telescopic rod is fixedly connected to a moving plate. This automatic welding device for radiation shielding panels, through the arrangement of the operation panel, mounting plate, motor, second electric telescopic rod, pressure plate, screw, and pressure plate, places the radiation shielding panel on the middle component of the operation panel. Activating the first electric telescopic rod on the vertical plate moves the moving plate closer to the radiation shielding panel, and the pressure plate presses and fixes both sides of the radiation shielding panel. Then, activating the motor on the mounting plate rotates the turntable closer to the radiation shielding panel. The second electric telescopic rod then moves the pressure plate closer to the upper surface of the radiation shielding panel, and the screw drives the pressure plate to fix it to the upper surface of the radiation shielding panel, achieving multi-directional fixation, preventing loosening and displacement during welding, improving the stability of the device, and ensuring welding quality.

The invention discloses a radiation protection device capable of moving along with a bulb tube under perspective of a C-shaped arm, which belongs to the field of medical instruments and comprises a bed body, a C-shaped arm frame, a bulb tube part and an image acquisition part, and the bulb tube part and the image acquisition part are respectively fixed at two ends of the C-shaped arm frame; the anti-radiation bed further comprises an anti-radiation cover body, one end of the anti-radiation cover body is fixedly connected to the outer portion of the bulb tube part in a sleeving mode, and the other end of the anti-radiation cover body is fixedly connected to the lower end of the bed body. The anti-radiation bed is provided with the anti-radiation cover body, one end of the anti-radiation cover body is mounted at the bottom of the bed body, and the other end of the anti-radiation cover body is mounted outside the bulb tube, so that a flexible connection channel is formed; no matter how the bulb tube swings back and forth or left and right, the radiation-proof cover body can stretch and deform along with the bulb tube, the radiation-proof cover body is like a protective shield which always follows a hand, and most of primary scattered rays are limited in the radiation-proof cover body when being just generated, so that the environmental radiation background value in the operating room is remarkably reduced, and the radiation-proof effect of the operating room is improved. Particularly, the lower limbs of a doctor standing close to the operating bed are protected from being hit by lateral scattering.

The goal is to reduce the heating load in winter and the cooling load in summer. [Solution] The membrane structure building comprises a double membrane that constitutes the exterior of the building and has an inner membrane and an outer membrane having a radiative cooling function, and an air blower / discharge device that switches between an insulating mode in which air is blown into the double membrane to form an air layer between the inner membrane and the outer membrane, and a solar radiation shielding mode in which air is discharged from the double membrane to bring the inner membrane and the outer membrane into contact.

The application relates to the technical field of medicine injection, and particularly discloses a protective injection device for radioactive medicine, which comprises an extension pipe and a cylinder made of radiation shielding material, one end of the cylinder is provided with a cylindrical slot, a through hole is arranged at the middle position of the bottom of the cylindrical slot, a ring-shaped cover is arranged on the middle part of the outer side of the extension pipe, the two sides of the cover are respectively fixedly connected with the outer side of the extension pipe, an opening is arranged in the inner wall of the extension pipe and communicates with the inner cavity of the cover, a sliding hole is arranged on the outer side of the cylinder and close to the bottom of the cylindrical slot, and a moving block which can seal sliding is arranged on the sliding hole, the technical scheme of the example of the application can accurately control the injection amount of the radioactive medicine, reduces the waste of the radioactive medicine, when the hand of a medical staff approaches the needle, there is no radioactive medicine in the needle, and the radiation dose received by the hand of the medical staff is reduced.

The present disclosure belongs to the technical field of nuclear power and particularly relates to a loading and unloading plug for spent fuel storage. The loading and unloading plug provided by the present disclosure adopts a split structure of a loading and unloading ring combined with an inner plug, the outer surface of the inner plug is continuously curved and gradually decreases in diameter from top to bottom, can form shielding for rays in multiple directions, and is beneficial to centering and guiding during hoisting of the inner plug, effectively reducing problems such as bumping; the stepped portion of the loading and unloading ring side wall protruding part pressing against the discharge port can not only play a supporting role for the loading and unloading ring, but also form effective radiation shielding for the gap between the loading and unloading ring and the discharge port, and the side wall of the loading and unloading ring combined with the first flange of the inner plug and the shielding ring can further form multidirectional radiation shielding for the gap between the loading and unloading ring and the discharge port and the gap between the inner plug and the loading and unloading ring, so as to control the radiation dose outside the loading and unloading plug within a safe range.

The invention discloses a miniature automatic weather station and a temperature measurement optimization control method and system. The temperature measurement performance of the miniature weather station is improved through global comprehensive optimization in the aspects of a system structure, circuit layout and a data algorithm. The system structure is improved, the structural design of the double-layer vertical-wall hollow cylindrical radiation-proof cover retains the advantage of compact structure of the miniature automatic weather station, and meanwhile, a conventional horizontal natural ventilation radiation-proof cover in a louver blade overlapping form is changed into the double-layer vertical-wall hollow cylindrical radiation-proof cover; sampling airflow is changed from horizontal natural ventilation airflow to vertical active air exhaust sampling. According to real-time meteorological environment data, a sampling air pump is driven and controlled in a segmented mode to operate, the solar radiation intensity, the atmospheric wind speed and the atmospheric temperature are used as control variables to determine the operation speed and the sampling flow of the sampling air pump, and a working mode, a circulation control variable and a working time sequence are selected. And in the aspect of a data processing algorithm, a multi-source data fusion calibration method is adopted to improve the accuracy of temperature measurement data.

A system configured to reduce scatter radiation around a surgical table during a medical procedure that may include at least one radiation shield configured to be connected to a surgical table with an attachment mechanism, wherein the at least one radiation shield includes one or more adjustable radiation shield segments coupled or releasably coupled to the at least one radiation shield. A device may include a pump in fluid communication with the one or more adjustable radiation shield segments comprising a pneumatic channel that is configured to at least partially inflate the pneumatic channel such that at least a first portion of the at least one radiation shield extends vertically above at least a portion of the surgical table, wherein a second portion of radiation shield is configured to extend below the surgical table. A device may include a controller configured to activate the pump.

In some embodiments, an apparatus may include a housing (1002) having a cooking chamber (1034), an air inlet, an air outlet, and a first chamber formed in the housing, the cooking chamber (1034) including an inner top wall (1044); a microwave source positioned outside the cooking chamber (1034) and configured to emit microwaves into the cooking chamber (1034); an air movement device (1068) positioned within the first chamber; a heating element (1070) positioned within the first chamber; and a radiation shield (1065) defining a top surface of the first chamber; and a volute (2102) positioned on the radiation shield (1065), the volute (2102) having an inlet (2107) positioned within the housing (1002) and an outlet connected to the air outlet of the housing (1002), where a cooling airflow is generated by an air movement device (1068) to direct air through the air inlet into the housing (1002), through the inlet (2107) of the volute (2102), and through the outlet of the volute (2102), through the inlet (2107) of the volute (2102). And the air is discharged out of the shell (1002) through an outlet of the volute (2102) and an air outlet of the shell (1002).

A radiation barrier provides adjustable protection against radiation incident from multiple directions simultaneously. First and second radiation shields are pivotally retained by an axis post to form a radiation shield assembly. Each radiation shield is formed from radiation shielding material with a lead equivalence. The radiation shields have a closed configuration where the shields are disposed in a nesting relationship to a single side of the axis post with the first radiation shield disposed interior to the second radiation shield. The first radiation shield pivots in a plane laterally displaced from the center axis of the axis post by a distance D1 while the second radiation shield pivots in a plane laterally displaced from the center axis by a greater distance D2. Notches can be disposed in the proximal end portion of the first radiation shield to permit mounting brackets of the second radiation shield to be received therethrough.