48 results about "Radioactive environment" patented technology

The invention relates to an acylhydrazone bond-connected covalent organic framework material, in particular to an acylhydrazone bond-connected covalent organic framework material as well as a preparation method and application thereof, and aims to overcome the defects of various materials for adsorbing Pd (II) in one aspect or the defects of poor stability and durability in high-acidity and high-radioactivity environments. Or the adsorption selectivity on Pd (II) is not strong. As an emerging crystalline organic porous polymer, the covalent organic framework is mainly formed by connecting pure organic structural units through dynamic covalent bonds, has the advantages of permanent high porosity, low density, high chemical stability, high thermal stability and the like, and is expected to realize Pd (II) adsorption in strong acid and ray irradiation environments.

The invention relates to the technical field of automatic control, and discloses a PLC-based seawater multi-nuclide separation automatic control method and system, and the method comprises the steps: obtaining analysis task parameters, such as a sample volume, a target nuclide type sequence, and the like; converting the data into an internal execution formula containing a precise time sequence and an actuator action sequence through PLC internal compiling logic; the method comprises the following steps: performing online pretreatment on original seawater based on sensor feedback of pH value, flow velocity and the like to obtain a sample flow with optimized conditions; according to system state data, multi-nuclide sequential adsorption is realized, and a separation column loaded with target nuclide is obtained; and sequentially eluting by using different eluents, and collecting to obtain the purified single nuclide component. The whole process runs in a full-automatic mode, the risk that experimenters are exposed to the radioactive environment is greatly reduced, errors caused by manual operation are effectively eliminated, and high consistency and traceability of analysis data of different batches and different monitoring mechanisms are guaranteed.

The application discloses an ultrasonic decontamination tank and ultrasonic decontamination device for radioactive environment, which comprises an ultrasonic decontamination tank shell, an ultrasonic decontamination tank top cover, a cooling mechanism, an ultrasonic oscillation mechanism and a gas removal mechanism. The ultrasonic decontamination tank top cover is rotationally connected with the ultrasonic decontamination tank shell, and is used for opening and closing the ultrasonic decontamination tank shell by rotating to a preset position. The cooling mechanism, the ultrasonic oscillation mechanism and the gas removal mechanism are arranged in the ultrasonic decontamination tank shell respectively. The ultrasonic oscillation mechanism is used for cleaning through ultrasonic oscillation, and the gas removal mechanism is used for removing the gas accumulated at the bottom of a decontamination container. The ultrasonic decontamination tank and the ultrasonic decontamination device for radioactive environment have good decontamination and cleaning effect on aerosol on the surface of a product container, control the spread of pollution, greatly reduce the pollution to subsequent related equipment and reduce the waste amount.

The fluorinated slag tank lid assembly includes an industrial robot A and an overhead platform. The end of the industrial robot A is equipped with a lid disassembly / assembly mechanism, which includes a double-shank bolt tightener, an electromagnetic chuck A with a floating buffer structure, and a hydraulic rotating joint. The overhead platform has a placement surface at its upper end, with a perforated hole at its center connecting to the lower overhead section. The advantages of this invention are: by using an industrial robot in conjunction with the double tightener and hydraulic joint, bolt disassembly / assembly and cover plate handling are replaced by manual labor, significantly improving work efficiency; the floating electromagnetic chuck avoids rigid collisions that could damage the flange sealing surface, ensuring docking stability; the perforated design of the overhead platform exposes the cover sealing ring groove, allowing for convenient replacement of the sealing ring without flipping the heavy cover; it is compatible with an anti-loosening spring bolt structure, preventing parts from scattering and simplifying automated material management; and it enables human-machine isolation operations, significantly reducing the risk of personnel exposure to radioactive environments.

The invention belongs to the technical field of nuclear facility decommissioning, and particularly discloses an underwater laser cleaning and cutting combined machining device and a using method, cleaning and cutting are achieved through refraction and reflection of cleaning laser by scanning an X / Y-axis galvanometer set and a dichroscope and transmission of cutting laser by the dichroscope, and coaxial focusing is achieved through a common field lens; a gas-liquid coaxial composite nozzle is arranged at the bottom, and center auxiliary airflow and annular high-pressure laminar flow water can be independently regulated and controlled; millisecond-level process switching is matched, and instant cutting is carried out after cleaning is completed at the same underwater station. Aiming at the problems of low efficiency, high safety risk, more secondary pollution, poor cutting quality and the like in the decontamination and disintegration process of the high-level metal part of the nuclear power station, the invention does not generate radioactive waste liquid, effectively avoids secondary pollution, remarkably improves the cutting quality, the operation safety and the system reliability, and is suitable for green and efficient retirement operation in a high-radioactivity environment.

The invention provides an anti-corrosion process of a closed cooling water system in a radioactive environment, which comprises the following steps: step 1, adding lithium hydroxide into a primary loop closed cooling water system of a nuclear power plant, and adjusting the pH value of the primary loop closed cooling water system of the nuclear power plant to 9.5-10.5 through the lithium hydroxide; 2, hydrazine is added into the primary loop closed cooling water system of the nuclear power plant, and the dissolved oxygen concentration of the primary loop closed cooling water system of the nuclear power plant is controlled to be smaller than 50 micrograms per kilogram through hydrazine. By adding lithium hydroxide to adjust the pH value of the system and adding hydrazine to adjust the dissolved oxygen of the system, the problems that the influence of a radioactive environment on a corrosion inhibitor anti-corrosion process is hardly considered at present, so that when a part of newly-built nuclear power plants are designed in a primary loop closed type cooling water anti-corrosion process, the corrosion resistance of the system is influenced are solved; and neglecting the negative influence of the activation of the corrosion inhibitor on the personnel environment.

The embodiment of the invention relates to the technical field of radioactive substance sorting, in particular to a method for sorting samples in a hot cell, the samples have high radioactivity, and the method comprises the steps that feature images of simulation samples without radioactivity are obtained, the feature image of the simulation sample without radioactivity is similar to the feature image of the sample with high radioactivity; dispersing the mixed samples; obtaining an image of the dispersed sample; according to the obtained feature image, identifying an image with a predetermined feature from the obtained image of the sample; a sample corresponding to the image of the predetermined feature is picked up and placed at a predetermined position. By means of the method, multiple kinds of high-radioactivity samples can be accurately recognized and sorted in the high-radioactivity environment in the hot chamber, compared with an existing sorting mode, the accuracy and efficiency are higher, the radiation risk existing in manual operation can be avoided, and the sorting efficiency is improved. And the sorting safety is effectively improved.

The invention belongs to the technical field of measuring tools, and particularly relates to a support and hanger gap measuring device in a high-radioactivity environment, in the device, the center position of a fixed handle is movably connected with a rotating handle through a middle rotating shaft, one end of the rotating handle is provided with a measuring inclined plane, and the measuring inclined plane is an inclined plane; a measuring scale is fixedly mounted on the surface of the measuring slope, a fixed metal sheet is fixedly mounted on one side surface, close to the measuring slope, of one end of the fixed handle, and a reading datum line is arranged on the surface of the fixed metal sheet; a reference measuring sheet is fixedly installed at the edge of the other end face of the lower surface of the fixed handle, a measuring sheet is fixedly installed at the edge of the other end face of the lower surface of the rotary handle, and the initial scale on the measuring graduated scale corresponding to the reading reference line is the thickness of the measuring sheet and the reference measuring sheet when the measuring sheet and the reference measuring sheet are overlapped. Measurement work in a high-radioactivity environment can be rapidly and accurately completed, meanwhile, remote measurement and reading can be achieved, and personnel are prevented from getting close to the nuclear ray range.

The application discloses a welding device for a radioactive environment, which comprises a welding unit, a shielding unit, a maintenance unit and a channel. The welding unit is used for welding of parts in the radioactive environment. The shielding unit is installed outside the radioactive environment to shield the radiation of the radioactive environment. The maintenance unit is arranged outside the radioactive environment to maintain the welding unit. The channel passes through the shielding unit to connect the welding unit and the maintenance unit, so that the welding unit moves between the radioactive environment and the maintenance unit to connect the welding station and the maintenance station together. The welding device simplifies the remote indirect welding and maintenance operation, and can realize the maintenance and repair of the welding device by the operator outside the hot chamber, thereby ensuring the accuracy and safety of the operation.

The application discloses a multi-stage fastening system which can be quickly disassembled, comprising a cam connecting mechanism and a locking mechanism, the cam connecting mechanism comprising a connecting rod and a cam pressing rod, the cam pressing rod comprising a rear end cam and a front end pressing rod, one end of the connecting rod being connected with a first part, the other end of the connecting rod penetrating through the first part and a second part and being rotatably connected with the cam, the cam being provided with a transition curve section and a plurality of straight line sections, when the pressing rod is pressed downward to the second part to drive the cam to rotate, the transition curve section first contacts the second part, then each straight line section sequentially contacts and extrudes the second part to realize connection and multi-stage fastening, and the locking mechanism is arranged on the second part and used for clamping the pressing rod. The application also discloses a device used in a radioactive environment. The application has the advantages of fastening, multi-stage pre-tightening, high disassembly and assembly efficiency, wide application range and the like, and can meet the requirements of connection, adhesion and sealing of parts in a special environment such as radioactivity and the like which need to be conveniently and quickly disassembled and assembled.

The present application relates to quantum random number generation device and method, gamma spectrum measurement system and method, including: signal discrimination and shaping module, the analog pulse signal is discriminated and shaped, obtains standard pulse signal;Timestamp counting module, each standard pulse signal is timestamp marked and counted;Entropy extraction and randomization module converts original timestamp sequence to generate random number;Random number cache and interface module caches the generated random number and provides a standard interface for the upper system to call.The present application directly uses quantum physical process as entropy source, and the randomness has unpredictable theoretical guarantee, far more than traditional scheme, and simultaneously multiplexes the existing, strongest and most stable radioactive environment in nuclear power plant, and does not need to introduce radioactive source additionally.In addition, the present application adopts modular design, and is physically isolated from the original system, and does not affect each other, and reliability is high, compared with traditional deployment independent ORNG equipment, cost is greatly reduced.

This invention discloses a method and apparatus for quick-change of electro-hydraulic tool heads for nuclear facility decommissioning robots, relating to the field of nuclear facility decommissioning technology. The apparatus includes a tool head connection assembly, a quick-change adapter assembly, a rotating assembly, and a robot connection assembly. The tool head connection assembly is used to mount the tool head. The quick-change adapter assembly is detachably connected to the tool head connection assembly and connects the tool head to the nuclear facility decommissioning robot's electrical and hydraulic circuits, and is connected to the robot connection assembly via the rotating assembly. The robot connection assembly is used to mount the nuclear facility decommissioning robot. This invention addresses the radioactive environment of nuclear facility decommissioning by providing a fast, safe, and efficient tool head replacement mechanism, reducing the working time of personnel in radioactive areas, lowering the radiation dose received by personnel, and significantly improving the operational performance and safety of nuclear facility decommissioning robots.

1. Name of the product in this design: Filter and filter element replacement device for radioactive environments. 2. Purpose of this design: To filter fluid media in radioactive environments and to safely install and remove the filter cartridge using a matching replacement device, thereby reducing the risk of personnel radiation exposure. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The application belongs to the technical field of radioactive waste treatment, and discloses a modularized graphite back-taking and sampling system suitable for a radioactive environment, which comprises a back-taking device, a sampling device, a storage box, a monitoring system, an exhaust system and a control system. The back-taking device is driven by a mobile chassis to move a hydraulic mechanical arm. The quick-change tool table is provided with a suction cup tool, a drilling tool, a single-plate single-column clamp, a double-column clamp and a double-plate clamp. The hydraulic mechanical arm is quickly changed with the suction cup tool, the drilling tool, the single-plate single-column clamp, the double-column clamp and the double-plate clamp through a quick-connection structure to adapt to graphite blocks of different shapes. The sampling mechanism comprises a horizontal sampling module and a vertical sampling module to realize automatic collection of samples of multiple specifications. The application realizes full-process automation of graphite back-taking, sampling and boxing remote operation, has the characteristics of modularized design, multifunctional clamps, multiple dust suppression and high environmental adaptability, and can significantly reduce the radiation dose of personnel.

The application discloses a long rod device for remote operation and a use method, relates to the technical field of nuclear facility decommissioning, and comprises a clamp mechanism for clamping a target object, a push rod mechanism capable of realizing opening and clamping of the clamp mechanism, a locking mechanism capable of locking the position of the push rod, and a control mechanism capable of remotely controlling the push rod mechanism and the locking mechanism. The long rod tool provided by the application can be used in a radioactive environment, and through remote clamping operation, the radiation dose of an operator can be effectively reduced. The device can keep the clamp automatically locked at any opening degree, and the safety and stability of clamping are ensured.

The invention relates to a grillwork width measuring device for a nuclear reactor fuel assembly. The grillwork width measuring device comprises a clamping assembly and a measuring assembly, wherein the clamping assembly comprises a first clamping structure and a second clamping structure which move relatively in the first direction; the first clamping structure comprises a first clamping jaw and a first roller; the first roller is arranged in the first clamping jaw, and part of the first roller is exposed from the side, opposite to the second clamping structure, of the first clamping jaw; the second clamping structure comprises a second clamping jaw and a second roller, the second roller is arranged in the second clamping jaw, and part of the second roller is exposed from the side, opposite to the first clamping structure, of the second clamping jaw; and the measuring probe is mounted on the clamping assembly so as to measure the width of the measured grillwork when the first clamping structure and the second clamping structure clamp the measured grillwork. The device for measuring the width of the framework of the nuclear reactor fuel assembly solves the problem of measuring the width of the framework of the fuel assembly in a high-radioactivity environment, and can ensure the safety of operators and the accuracy of measurement during measurement.

The invention relates to the technical field of nuclear decommissioning disassembly, and provides an automatic quick-changing composite tool integrating grabbing and sawing functions, which comprises a bracket, a quick-changing mechanism, a grabbing mechanism and a sawing mechanism, the quick-changing mechanism is arranged at the end of the support and used for being externally connected with equipment, the grabbing mechanism is fixed to one side of the support and comprises a first motor, a second motor, a connecting rod and a clamping jaw, and the sawing mechanism is linearly and slidably connected to the other side of the support and used for cutting materials. The composite tool is composed of the saw cutting module, the grabbing module and the quick changing module, the quick changing module and an external mechanical arm are quickly disassembled and assembled, automatic quick changing and medium conveying are achieved, vibration is reduced through the grabbing and saw cutting composite design, the composite tool adapts to the high-radioactivity environment, and the emergency operation requirement is mechanically guaranteed through the redundancy design of a first motor and a second motor.

The utility model discloses a device for removing radioactive deposits in a nuclear power station pipeline. The device comprises a static closed room, a high-pressure flushing mechanism and a waste treatment mechanism. According to the device for removing the radioactive deposits in the nuclear power station pipeline, the static closed room is arranged, so that radioactive water and water mist flowing out from the opening of the pipeline are prevented from diffusing into the external environment, and the situation that radioactive substances are diffused into the external environment and hurt a human body is avoided; meanwhile, a high-pressure flushing mechanism is arranged to clean radioactive deposits in the pipeline, a nozzle of a spray head is arranged towards the water conveying pipeline, and the spray head can move towards the spray head towards the water conveying pipeline in the pipeline through the counter-acting force of high-pressure water; the device for removing the radioactive deposits in the nuclear power plant pipeline solves the problem of high environmental dose caused by the radioactive deposits in the nuclear power plant pipeline, and reduces the radioactive environmental dose of the nuclear power plant, thereby reducing the radiation exposure dose of field staff and facilitating the control of the radioactive dose of the nuclear power plant.

The present application relates to a kind of high-efficiency removal device and method for iodine in spent fuel solution, including iodine removal reactor, solution storage tank system, gas supply and preheating system, liquid delivery system, control system and tail gas treatment system, solution storage tank is connected with iodine removal reactor by liquid delivery system, gas supply and preheating system are connected with iodine removal reactor, tail gas treatment system is connected with the output end of iodine removal reactor, control system is connected with communication of iodine removal reactor, solution storage tank system, gas supply and preheating system, liquid delivery system and tail gas treatment system.The device disclosed in the present application, by the structure design of optimization and high-precision control system, realize the high-efficiency stable removal of iodine in spent fuel solution under the condition of temperature 75~98 ℃, gas-liquid ratio 80:1~160:1, realize long-distance operation maintenance, with good engineering amplification potential, suitable for continuous reliable operation in radioactive environment.

The invention provides a long-distance replacement device and method for a disc cutter in a strong radioactive place, belongs to the technical field of replacement devices in nuclear fuel places, and solves the problem that maintenance workers cannot replace cutters in a short distance in a strong radioactive environment. The device comprises a cutter mounting device used for dismounting a failed disc cutter from an extrusion cutting device and mounting a new disc cutter on the extrusion cutting device; the cutter dismounting and mounting device is used for dismounting the failed disc cutter dismounted by the cutter mounting device from the cutter mounting device and mounting a new disc cutter on the cutter mounting device; the clamping device is arranged opposite to the side, provided with the disc cutter, of the extrusion cutting device and used for clamping and fixing the cutter mounting device; the power hand is used for mounting the cutter mounting device on the clamping device or the cutter dismounting device; and the cutter mounting device, the cutter dismounting device, the clamping device and the power hand are all independent devices. The device can realize long-distance replacement of the disc cutter.

The utility model relates to the technical field of radiation detection equipment, in particular to an anti-Compton scattering detector structure, which comprises a main detector and an anti-Compton detector, and the anti-Compton detector is arranged around the main detector and encloses at least one side surface; and the anti-Compton detector and the main detector form a single-sided anti-Compton scattering structure or a multi-sided anti-Compton scattering structure. According to the utility model, at least one anti-Compton detector is arranged around the main detector. Signal coincidence is carried out between the anti-Compton detector and the main detector, and scattering ray signals which simultaneously respond in the two detectors are removed from energy spectrum signals of the main detector. The method can be used for reducing the influence of various scattering on the energy spectrum, reducing the interference of surrounding high scattering background on the gamma spectrometer, and improving the quality of the energy spectrum and the accuracy of nuclide identification in a high-radioactivity environment, a narrow space or a detected environment with surrounding sheltering objects, especially in a high-radioactivity environment, a narrow space or a surrounding sheltering object.

An inflatable air tent suitable for emergency repairs in radioactive environments and its usage method are disclosed. The tent body includes an air column, a base, side walls, and a canopy. The interior of the tent body includes a warm zone and a hot zone, with the warm zone corresponding to areas of low radioactivity and the hot zone corresponding to areas of high radioactivity. A personnel passage A is located in the hot zone; a personnel passage B connects the warm and hot zones; a material passage is located at the position corresponding to the hot zone in the canopy; and a passage C is located at the position corresponding to the hot zone in the base. An air supply channel for the air suit is provided on the side wall of the hot zone, and an internal air supply channel is provided on the side wall of the warm zone. The usage method includes the following steps: S1: Transfer the compressed inflatable air tent suitable for emergency repairs in radioactive environments to the docking channel at the emergency location; S2: Open the air supply channels and air column supply device to inflate the tent; S3: After inflation, dock passage C with the channel of the emergency repair area and enter the emergency area to carry out operations.

This invention belongs to the field of radioactive waste treatment technology and discloses a modular graphite retrieval and sampling system suitable for radioactive environments. The system includes a retrieval device, a sampling device, a storage box, a monitoring system, a ventilation system, and a control system. The retrieval device moves a hydraulic robotic arm via a mobile chassis. A quick-change tool table is equipped with suction cup tools, drilling tools, single-plate single-column clamps, double-column clamps, and double-plate clamps. The hydraulic robotic arm can be quickly changed with these tools via a quick-connect structure to accommodate graphite blocks of different shapes. The sampling mechanism includes horizontal and vertical sampling modules to achieve automatic collection of samples of various sizes. This invention achieves fully automated remote operation of the graphite retrieval, sampling, and packaging process. It features modular design, multi-functional clamps, multiple dust suppression methods, and high environmental adaptability, significantly reducing personnel radiation exposure.

The embodiment of the invention relates to the technical field of lifting equipment, in particular to a lifting device suitable for a fuel rod assembly. According to the hoisting device provided by the embodiment of the invention, the clamping assembly can move relative to the accommodating assembly, so that the fuel rod assembly can enter or leave the accommodating assembly, and the purpose of automatically clamping or releasing the fuel rod assembly can be achieved by utilizing the matching between the clamping assembly and the accommodating assembly; the lifting device is simple in structure and operation process, the fuel rod assembly can be stably grabbed and unloaded, the lifting device is suitable for remote operation in a hot chamber or a high-radioactivity environment, and meanwhile through cooperation of the lifting assembly, the containing assembly and the clamping assembly, the lifting efficiency of the fuel rod assembly is improved. And the fuel rod assembly can be vertically hoisted, so that the fuel rod assembly can be prevented from being deformed in the hoisting process, and the structural integrity of the fuel rod assembly and the safety of subsequent use are ensured.

The invention belongs to the technical field of irradiation reactors, and particularly relates to a titanium alloy plate type irradiation reactor which comprises a titanium alloy shell, a connector is fixedly connected to the outer wall of the titanium alloy shell, and a titanium alloy plate body and a titanium alloy pressing frame are detachably connected to the upper side of the titanium alloy shell through bolts. Dense hole grooves are formed in the titanium alloy shell, the titanium alloy plate body and the titanium alloy pressing frame, the dense hole grooves are matched with the bolts, and protrusions are arranged in the titanium alloy shell. The titanium alloy plate-type irradiation reactor adopts titanium alloy as a manufacturing material, compared with traditional stainless steel, the titanium alloy plate-type irradiation reactor is better in irradiation resistance, stress corrosion resistance and the like, and the service life is prolonged; the cost is only half of that of hastelloy, so that the application cost is reduced. Meanwhile, the hemispherical protrusions in the titanium alloy shell can trigger solution micro-turbulence, the action of rays and the solution is enhanced, the problem that the treatment efficiency of a traditional reactor is limited is solved, and the requirement for long-term use in the medium-low radioactive environment is met.

The invention discloses a portable sampling device for a nuclear power plant pool. The portable sampling device comprises a sampling box, a sampling rod, a water pipe seeker and a sampling head, the sampling box is provided with a pipe conveying module, a pipe collecting module, a water-gas module and an electric control module, and the water-gas module comprises a water pipe and is connected with the pipe conveying module and the pipe collecting module; the sampling rod is connected with the sampling box and the water pipe guide head; a water pipe is mounted on the pipe collecting module, penetrates through the pipe conveying module, the sampling rod and the water pipe guide head and then is connected with the sampling head; the electric control module is electrically connected with the sampling head, the pipe conveying module, the pipe collecting module and the water and gas module respectively; and the pipe feeding module is mounted on the sampling box. Through the telescopic sampling rod and the integrated water vapor and electric control module, accurate positioning and remote sampling of the sampling head are realized, personnel are effectively prevented from being exposed to a radioactive environment, the problems of inaccurate sampling depth, high contamination risk, complicated operation and the like in a traditional mode are solved, and the safety, accuracy and convenience are remarkably improved.

The application provides a mechanical hand clamp changing tool, which comprises a bottom plate, a vertical plate fixedly connected with the bottom plate, a clamp locking device arranged on a first side of the vertical plate and fixedly connected with the bottom plate, a clamp toe changing device arranged on a second side of the vertical plate and fixedly connected with the bottom plate, a clamp changing device fixedly connected on the surface of the second side of the vertical plate, a mechanical hand sleeve fixing seat dismounting device and a clamp positioning device. The scheme has the advantages of simple structure, simple working principle, increased maintenance space for personnel in the maintenance process, reduced radiation dose of workers in the maintenance process, greatly improved work efficiency, realized continuous and stable operation of the mechanical hand in the radioactive environment and ensured stable operation of the main process system.

The invention provides a tube socket screw classified collection device and method for disassembling a rod bundle type assembly. The tube socket screw classified collection device comprises a support, a translation driving mechanism, a drawer trolley, a tube socket collection hopper, a screw collection hopper, a turnover mechanism and a weighing and counting unit. The stations of the drawer trolley are switched through the translation driving mechanism, the hollow tube socket collecting hopper is driven by the turnover mechanism to turn over, and through the combination of impact vibration of the tube socket and a buffer block when the tube socket falls off and secondary vibration in the turnover process, complete separation of the hooking screw and the tube socket is achieved. And the separated screws fall into the screw collecting hopper below and are accurately counted through the precise weighing unit. According to the device, remote and automatic classified collection and transfer of the tube sockets and the screws in a strong radioactive environment are achieved, the risk that personnel are irradiated is effectively avoided, the separation problem caused by hooking of the screws is solved, and reliable technical support is provided for stage treatment of wastes with different radioactive levels.