415results about "Shielded cells" patented technology

The invention discloses a positive pressure antifouling gamma-ray spectrum automatic monitoring square cabin, and relates to the technical field of nuclear emergency monitoring and square cabins, the positive pressure antifouling gamma-ray spectrum automatic monitoring square cabin comprises a cabin body, a transition cabin is arranged in the cabin body, the transition cabin divides the interior of the cabin body into a sealed measurement cabin and a sample preparation cabin, and one side of the transition cabin is provided with an air-tight door capable of communicating the sealed measurement cabin with the sample preparation cabin; a sample conveying cabin used for allowing a sample to go in and out of the sealed measuring cabin and the sample preparation cabin is arranged on the side, away from the airtight door, of the inner wall of the transition cabin, the cabin body is overall designed into three areas, and the to-be-detected sample treatment area and the electric refrigeration high-purity germanium gamma-ray energy spectrometer are effectively isolated; filtered clean air is continuously introduced into the measurement cabin, the pressure in the sealed measurement cabin is maintained to be greater than the external pressure, the requirements of air cleanliness and positive pressure are ensured, and the background of the surrounding environment of the electric refrigeration high-purity germanium gamma-ray energy spectrometer is prevented from being changed after external radioactive pollution air enters the sealed measurement cabin, so that the measurement is prevented from being influenced.

Embodiments of a ventilated storage system and method are provided for enabling space-efficient storage of casks containing hazardous nuclear materials. Each of a plurality of dry storage casks has a ventilated overpack with air inlets at or near the bottom and air outlets at or near the top so that ambient air flows into the air inlets, through the overpack, and out of the air outlets for venting and cooling the hazardous nuclear material. A storage pad on which the casks sit each have a plurality of air flow channels that provide air to the air inlets situated at the bottoms of the casks. The storage pad enables the casks to be placed closer together in a more space-efficient triangular array.

The invention relates to a door assembly (1) allowing a sealed transfer between two enclosed volumes, comprising a flange (2) arranged to delimit an opening in one of the enclosed volumes, and a door (4) that extends along an axis (C) and is hingedly fastened to / mounted on the flange (2) so as to move from a closed position in which the door (4) closes the passage opening (3), into an open position, characterized in that the door (4) is fastened to the flange (2) by a double-joint linkage mechanism (5) comprising a first joint (6) arranged to allow a rotational movement about an axis (A) perpendicularly to the axis (C) of the door by a maximum of 30 degrees in relation to the plane of the passage opening (3), and a second joint (7) arranged to allow a rotational movement about an axis (B) parallel to the axis (C) of the door.

A portable small protective workstation for alpha nuclide operation comprises a protective cabin, a transparent window and glove holes are formed in the front side face of the protective cabin, radiation-resistant operating gloves are embedded in the glove holes in a sealed mode, a tray inlet is formed in the side face of the protective cabin, and a drawer type bracket is connected to the tray inlet in a sliding mode. The drawer type bracket comprises a tray layer, a cushion layer and a cover plate, the tray layer and the cushion layer are both vertically and fixedly connected to the side face of the cover plate, the tray layer is located above the cushion layer, a high-adsorbability radioactive water absorption pad is fixedly installed on the cushion layer, a plurality of through holes are formed in the bottom face of the tray layer, and the tray layer and the cushion layer are movably installed in the protection cabin body through a tray inlet. The cover plate abuts against the outer side face of the protection cabin in a sealed mode. An air filter box is arranged above the protective cabin body, and a filter layer is arranged in the air filter box. According to the utility model, the defects in the prior art are overcome, and the organic unification of radiation protection, pollution control and experiment convenience for operators is realized.

A method for providing a neutron radiation shield includes a step (a) of providing a wall having an opening; and a step (b) of at least partially filling a space in the opening with a neutron moderator. Step (b) includes blast-injecting plastic granules into the opening with a blower device to form the neutron moderator.

The invention relates to the technical field of nuclear industry, in particular to a multi-tool universal coupling system for radioactive package processing and a carrying method, and the multi-tool universal coupling system for radioactive package processing comprises a main clamping piece which comprises a claw disc and clamping fingers arranged on the claw disc; the auxiliary clamping piece comprises clamps which are used for carrying different goods or executing specific operation, and interfaces which are arranged on the clamps and are in coupling fit with the clamping fingers; when the main clamping piece cannot complete specific operation, the matched clamp is selected, the clamping fingers are in coupling connection with the connector, the specific operation is executed through the clamp, the barrel container can be safely hoisted through the design of the main clamping piece and then released through the control part, and in addition, other specific carrying operation is achieved through connection of the main clamping piece and the auxiliary clamping piece. And the time for replacing the clamp is shortened.

The invention relates to a shielding body structure of a standing type radioactive internal pollution measuring system and a design method, and the shielding body structure comprises a personnel shielding cabin which comprises three vertical cylindrical surfaces, a first upper top plate arranged above the vertical cylindrical surfaces, and a first lower bottom plate arranged below the vertical cylindrical surfaces, the opening angle after connection is greater than 90 degrees; the detector shielding cabin comprises three vertical cylindrical surfaces, a second upper top plate and a second lower bottom plate, the three vertical cylindrical surfaces are continuously connected, the opening angle after connection is 90 degrees, and the opening direction formed by the three vertical cylindrical surfaces faces the opening direction formed by the three vertical cylindrical surfaces; and the detector supporting module is mounted in the detector shielding cabin and is used for supporting and fixing the detector. According to the invention, the problems of compact space, poor passing ability and high detection limit value of the detector after the detected person enters the shielding body structure in the prior art are effectively solved.

The invention belongs to the technical field of transparent ceramics, and discloses a high-entropy transparent ceramic and a preparation method and application thereof. The molecular formula of the high-entropy transparent ceramic is (LuxYySczYbmErn) 2O3, x is more than or equal to 0.05 and less than or equal to 0.6, y is more than or equal to 0.05 and less than or equal to 0.6, z is more than or equal to 0.05 and less than or equal to 0.6, m is more than or equal to 0.05 and less than or equal to 0.6, n is more than or equal to 0.05 and less than or equal to 0.6, and x + y + z + m + n is equal to 1, Lu2O3 powder, Y2O3 powder, Sc2O3 powder, Yb2O3 powder, Er2O3 powder and ZrO2 powder are subjected to ball milling and mixing, calcined and molded at 800-1200 DEG C to prepare a biscuit, and the biscuit is subjected to pressureless sintering at 1600-1800 DEG C in vacuum, annealed and polished to prepare the high The relative density of the ceramic is 99.5% or above, the transmittance at 1000 nm is 76% or above, and the ceramic has good optical, mechanical, corrosion-resistant and radiation-resistant performance and can be applied to the field of nuclear energy window material preparation.

The invention relates to the technical field of hot chambers, and provides a modular mobile hot chamber shielding module which comprises a bottom module, a top module and four side modules, the bottom module, the top module and the four side modules are spliced and enclosed to form a cuboid structure, and the adjacent modules are connected through fasteners; the bottom module is of a plate-shaped structure formed by splicing a plurality of bottom sub-modules, and the adjacent bottom sub-modules are positioned through first positioning pins; the top module is of a plate-shaped structure formed by splicing a plurality of top sub-modules. Each side face module is of a plate-shaped structure formed by splicing a plurality of side face sub-modules, and the adjacent side face sub-modules are connected through fasteners. In each side surface module, two layers of side surface sub-modules are arranged in the height direction, and the upper layer of side surface sub-module and the adjacent lower layer of side surface sub-module are positioned through a second positioning pin; and the bottom module and each lower-layer side surface sub-module are positioned through a third positioning pin. The modular degree is higher, the transfer size is conveniently reduced, and transfer is more convenient.

Disclosed is a calibrator device designed to measure the activity of a radio element, including: an ionization chamber, intended to receive the radio element; and electronic / computer system for controlling the operation of the calibrator device. The electronic / computer system includes voice control, which include: at least one microphone capable of capturing a voice instruction emitted by the operator; a recognition module designed to convert the voice instruction into a request that can be executed by the electronic / computer system; and a control module designed to control the execution of the request by the electronic / computer system.

The invention discloses a modular hot cell, and relates to the technical field of radiation experiments. The hot cell comprises: a base; a shielding body, wherein the shielding body is arranged on the base; the shielding body is arranged on the base, the shell is arranged on the base, and the shell is located in the shielding body; part of the passing assembly is arranged on the shielding body, and part of the passing assembly is arranged on the shell; a part of the observation assembly is arranged on the shielding body, and a part of the observation assembly is arranged on the shell. According to the modularized hot chamber, through the modularized splicing structure of the base, the shielding body and the shell, the construction efficiency of the hot chamber is remarkably improved, the nested design of the shielding body and the shell forms a multiple radiation protection barrier, and the radiation leakage amount is controlled to be at an extremely low level while the operation visibility of personnel is guaranteed. According to the invention, a user can inspect the damaged fuel element at the first time, and the efficiency and reliability of fuel element damage inspection and analysis are improved.

A gas-tight transfer device for transferring an object from a flexible container (80) containing the object (21) to a chamber, the device comprising: a chamber flange (2); a container flange (3) defining a transfer channel (30) connecting a feed end (31) and a discharge end (32) of the container flange (3); the container (80) comprises a wall (82) which extends at least partially into the transfer channel (30) and is in fluid-tight connection with the container flange (3) by clamping the wall (82) against a clamping surface fixed to the container flange (3) by means of a clamping force applied in a substantially axial direction.

The present invention belongs to the technical field of radioactive target decontamination, and particularly relates to a target contamination removal and sampling device for decontaminating and sampling a radioactive target (4) inside a glove box. The device includes a clamping mechanism and a wiping mechanism mounted on a rectangular system chassis (1). The clamping mechanism is used to fix the cylindrical target (4), and the wiping mechanism is used to wipe the target (4). In the decontamination and sampling operations of the target, the present invention reduces the finger tip dose and the whole body external irradiation dose of the operator, improves the decontamination effect, and simplifies the operation.

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.

According to the ventilation system of the nuclear material production line and the nuclear material production line workshop, air exhaust equipment and air supply equipment in the system are used for conveying fresh air to a sealed area outside a target area, and the target area is the sealed area with the highest risk level; the air supply equipment is further used for extracting air from the adjacent sealing area with the risk grade lower than that of the target area and conveying the air into the target area so as to form directional airflow flowing from the low-risk area to the high-risk area. And the exhaust equipment is used for exhausting air in each sealing area. The control device is electrically connected with the air supply equipment and the air exhaust equipment and used for adjusting the air supply amount and the air exhaust amount of all the sealing areas so that the negative pressure gradient can be maintained among the multiple sealing areas, and the negative pressure in the target area is higher than the negative pressure in the adjacent sealing areas. The ventilation system can effectively avoid radioactive aerosol leakage in a high-risk area.

The utility model discloses a shielding device for electron beam radiation chamber protection, which comprises side baffle plates and a top plate which are arranged in a radiation chamber, the side baffle plates and the top plate are detachably connected, the bottom ends of the side baffle plates are provided with assembling plates, a conveying mechanism is arranged between adjacent side baffle plates, and a fixing plate positioned above the conveying mechanism is arranged between the side baffle plates. A movable baffle connected with the linear reciprocating motion mechanism is arranged in the fixing plate, a distance detection assembly facing the conveying mechanism is arranged on the top plate, a bearing plate connected with the side baffles is arranged below the conveying mechanism, a supporting plate is connected to the top of the bearing plate, and a shielding piece is connected to the supporting plate. According to the X-ray shielding device, through the arrangement of the conveying mechanism, the distance detection assembly, the bearing plate, the supporting plate, the fixed plate and the movable baffle, the X-ray diffusion path is effectively reduced, the X-ray shielding performance is improved, and the X-ray shielding device can adapt to conveying mechanisms of various different heights at the same time.

The invention relates to a door arrangement (1) for a door having a first closed space, the arrangement allowing a sealed connection between the first closed space and a second closed space, and comprising a flange (2) defining an opening plane and a passage axis (O) perpendicular to the opening plane, a door (4) pivotably mounted on the flange (2), and a chute (10) for a discharge assembly movable between a discharge position in which the chute is positioned opposite a passage opening and a position in which the chute is spaced apart from the passage opening, the chute being attached to the flange (2) by means of a first double-hinged connection mechanism (11) comprising a first hinge (12) arranged to allow rotational movement about an axis (C) parallel to the passage axis (O) of the passage opening, and a second hinge (13) arranged to allow rotational movement about an axis (D) perpendicular to the passage axis (O) of the passage opening.

A recovery tool for recovering a solid element, in particular a radioactive material. The recovery tool includes a chassis, a capture head and at least one cup. The capture head is movable with respect to the chassis between a retracted position and a deployed position. In the retracted position, the capture head is accommodated within a chamber of the recovery tool. In the deployed position, the capture head is able to capture the solid element. The cup is movable with respect to the chassis between an open position and a closed position. In the open position, the cup allows the capture head to be deployed. In the closed position of the cup, the cup allows the solid element to be retained within the chamber with the capture head in the retracted position.

The subject of the invention is a containment shell (1) comprising a wall (10) defining a space (12) made of a material of the concrete type and at least one observation module (30) comprising at least one window (33) arranged in an opening (32) of the wall (10), said window comprising a frame (36) in which is housed at least one optical block (34) providing protection against high-energy and / or neutron radiation, said frame fitting in the opening (32), the observation module further comprising a protection element (37) comprising a sash (38) carrying a glass (39) and arranged to close the opening at a surface inside the shell, said observation module thus comprising at least one interface (I) between two surfaces (S), characterized in that it further comprises at least one sealing system (40) arranged at the at least one interface (I).

This utility model discloses a partition device for handling nuclear waste in nuclear power plants, including a left sealing plate and a right sealing plate. The left and right sealing plates are respectively connected to a rotating shaft and then to a left connecting rod I and a right connecting rod I respectively via pins. The left and right connecting rods I are respectively connected to rocker arms A and B, which are linked to each other via left and right connecting rods II. The rocker arms are connected to a spindle, and the other end of the spindle is connected to a corner box. The driving gear of corner box A is connected to the spindle, and the driven gear is connected to a transmission shaft. The transmission shaft is connected to the driving gear of corner box B, and the driven gear of corner box B is connected to the drive shaft of a reduction gearbox. The upper and lower ends of the device are connected to pipes via fasteners. This utility model is suitable for the safe hoisting of irregularly shaped objects in nuclear facilities, and has the comprehensive advantages of precise angle adjustment, dynamic sealing protection, and optimized working space. Furthermore, all components are highly reliable, have a long service life, and possess characteristics such as shock resistance and radiation resistance.

The present disclosure relates to the field of radiation imaging for testing and / or quality assurance of items (6) in a variety of industrial applications. The radiation imaging system (1) for inspecting a plurality of items (6) comprises a radiation imaging device. a shielded enclosure (31), at least one access port (33). and at least one item handling apparatus (10) with a movable manipulator (4) configured for detachably coupling and releasing a plurality of mounts (5) suspended on a retaining element (36) arranged in the access port (33). and positioning the plurality items (6) mounted on the mounts (5) within a projection space (23) of the radiation imaging device.

The present disclosure relates to a system (1) for a sealed junction, comprising: a wall (2); a door (3); a locking device (5); and a safety device.

This invention provides a method for reinforcing existing underground shelters and existing underground structures using chemical grout injection, enabling their effective use as underground shelters. [Solution] The method for reinforcing an existing underground structure 11 according to the present invention is characterized by performing ground improvement using a chemical grout injection method on the ground 1 on the outer perimeter of the existing underground structure 11, thereby reducing the saturation of the ground 1 and making it unsaturated, and constructing a buffer body 12 on the outer perimeter of the existing underground structure 11, thereby attenuating energy acting from the outside. Furthermore, if the existing underground structure 11 is an existing underground shelter, a buffer body 12 made of reinforced ground can be formed on the outer perimeter of the underground shelter by chemical grout injection, thereby improving the durability, strength, and safety of the underground shelter against, for example, incoming ballistic missiles.

A ruggedizing apparatus for electronic equipment in a spacecraft is provided that can achieve both a radiation shielding effect and a heat-dissipation effect. The ruggedizing apparatus includes: a pressure vessel that is filled with a coolant and places at least a heat-generating electronic circuit of the electronic equipment within the pressure vessel, wherein the heat-generating electronic circuit is immersed in the coolant; and a forced liquid-flow generator placed within the pressure vessel, wherein the forced liquid-flow generator causes the coolant on the heat-generating electronic circuit to move away from the heat-generating electronic circuit.

An x-ray shield 230 for a semiconductor wafer x-ray inspection system, where the shield comprises, a frame 240 defining an internal area and an x-ray shielding material 250 which is supported within t

The present invention relates to a dry storage module and a system comprising the same, the dry storage module having an improved mounting manner of a gas outlet and a cylinder body in a dry storage module for spent nuclear fuel of a vertical light water reactor, the dry storage module comprising: a housing forming a hexahedron-shaped accommodation space; a plurality of storage parts which are arranged in two rows in the accommodation space, are used for storing spent nuclear fuel, and extend for a long distance respectively; a hexahedron-shaped module part for accommodating the storage part; the storage tank is filled with spent nuclear fuel; a cartridge body surrounding the tank; a cartridge holder for attaching / detaching the cartridge body to / from the module part; the air inlet is formed in the side of the upper part of the shell; the air outlet is formed in the lower part of the shell; and shield grids provided at the respective inflow port and outflow port.

A negative pressure centralized monitoring device for a radioactive control area of a nuclear power plant, comprising at least one measurement member (l), a buffer assembly(2), and a pipeline (3). The pipeline (3) comprises a main pipe(31) and at least one branch pipe (32), one end of each measurement member (l)is connected to a control area by means of a branch pipe (32), and the other end of each measurement member (l) is connected to the main pipe (31) by means of the branch pipe (32): the buffer assembly (2) is disposed on the main pipe(31); the measurement member (l) and the buffer assembly (2)are arranged in rooms, one end of the main pipe (31) is connected to the outside: the measurement member (l) is used for measuring the difference between the pressure of the control area and the pressure of the outside: and the buffer assembly (2) is used for filtering out the fluctuation of the external atmosphere. According to the device, the fluctuation of the external atmosphere can be filtered out, and the measurement member (l) is prevented from being affected by the disturbance from the external environment, so that the accuracy of the measurement member (l)is improved, and a ventilation and purification system can accurately adjust the air supply amount and the air intake amount. The stable operation of the ventilation and purification system is guaranteed, and the negative pressure in the control area is kept stable: and additionally, the number of holes punched in the outer wall of the control area can be reduced, thereby reducing the influence of punching holes in the outer wall on the sealing performance of the control area.

A radiographic inspection device and a method of inspecting an object are provided. The radiographic inspection device includes a support frame, where an inspection space applicable to inspect an object is formed within the support frame, and the inspection space has a first opening connecting to an outside; a transfer mechanism applicable to carry the object to move through the inspection space; a shielding curtain mounted at the first opening; and a driving mechanism mounted on the support frame and configured to drive the shielding curtain to move, so as to open or close the first opening. Since the driving mechanism drives the shielding curtain to rise or fall, it is possible to ensure that the lightweight object for inspection may smoothly enter the inspection space for subsequent radiographic scanning.

The utility model relates to the technical field of hot chamber prefilters, in particular to a hot chamber prefilter which comprises a filter device, fixing rings are fixedly connected to the upper end and the lower end of the filter device, grooves are formed in the upper ends of the fixing rings, and cleaning rods are slidably connected to the adjacent ends of the two fixing rings. A plurality of evenly-installed brushes are arranged at the end, close to the filtering device, of the cleaning rod, connecting blocks are fixedly connected to the upper end and the lower end of the cleaning rod, a connecting rod is fixedly connected to the upper end of the connecting block located at the upper end, and a pushing block is fixedly connected to the upper end of the connecting rod; through the arrangement of the connecting rod, the cleaning rod, the brush and the fixing rod, equipment capable of being pushed to clean filtered impurities is additionally arranged on the outer side of an original filtering device, so that people can conveniently clean and maintain the filtering device when using the filtering device, and daily use of people is more convenient; and the practicability of the equipment in use is improved.