70 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 invention provides a nuclear power plant CRDM middle weld joint machining tool and method. The machining tool comprises a cutter head and a tool assembly. And the cutter assembly is used for cutting the slope welding seam. The cutter assembly comprises a first cutter, a second cutter and a third cutter which are axially arranged around the cutter head at intervals. Wherein in the axial direction, the cutting tracks of the first tool, the second tool and the third tool coincide, and the cutting edge heights of the first tool, the second tool and the third tool are sequentially increased from bottom to top. Due to the design of the heights of the cutting edges of the three sets of cutters, the cutting process is more stable, the output of cuttings is reduced, the cuttings are easier to break, the cuttings which are too long and difficult to clean cannot be formed, the cleaning work is simplified, and potential safety hazards caused by incomplete cleaning of the cuttings are reduced. The labor intensity and the operation risk of constructors are reduced, especially in a radioactive environment, the exposure time of the constructors is shortened, and the construction safety is improved.

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 present invention discloses a transfer device, including a transfer track and a transfer trolley. The transfer trolley is an integral module that can be hoisted and moved as a whole away from or placed on the transfer track. The transfer trolley includes a walking mechanism, a grabbing mechanism and a motor assembly. The grabbing mechanism is installed on the walking mechanism and is used to pick up and place the waste barrel. The walking mechanism is movably connected to the transfer track and is used to support the grabbing mechanism and move the waste barrel along the transfer track. The motor assembly is provided with two groups, and the two groups of motor assemblies are respectively connected to the walking mechanism and the grabbing mechanism. The walking mechanism, the grabbing mechanism and the motor assembly are all submodules that can be hoisted and moved separately, and each submodule can be detachably connected to form an integral module. The transfer device of the present invention adopts a modular layout form and has a reasonable structural arrangement. It can meet the requirements of remote maintenance, replacement and installation of vulnerable components on the basis of realizing transfer, and is suitable for radioactive environment working conditions. The present invention also provides a radioactive waste treatment system.

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 discloses a sealed rotary joint, a mechanical arm and a nuclear industry robot, which can form a sealed channel in the sealed rotary joint and can enable a spool to be accommodated in the sealed channel so as to be prevented from being polluted by a radioactive environment, so that the decontamination difficulty of the sealed rotary joint is reduced. The sealing rotary joint comprises a first arm pipe, a second arm pipe and a rotary assembly. A first communicating hole is formed in the end face of the second arm pipe connecting end and communicates with the interior of the second arm pipe. The rotary assembly is fixed in the first arm pipe; after penetrating through the end face of the connecting end of the first arm pipe, the rotating part of the rotating assembly is fixedly connected with the connecting end of the second arm pipe in a sealed mode and used for driving the second arm pipe to rotate around the axis of the second arm pipe so that the second arm pipe can rotate relative to the first arm pipe; the rotating part of the rotary assembly is also hermetically and rotationally connected with the connecting end of the first arm pipe; a through hole is formed in the rotating part of the rotating assembly and communicates with the first communicating hole of the second arm pipe and the interior of the first arm pipe.

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 invention discloses an electric melting furnace for a glass solidified body and an assembling method thereof.The electric melting furnace comprises a melting furnace body, an electrode, a heat preservation body, a top cover plate covering the melting furnace body and a melting pool arranged in the melting furnace body, a discharging opening used for discharging is formed in the bottom of the melting furnace body, and the heat preservation body is arranged outside the melting furnace body and the top cover plate; the electrode penetrates through the wall of the smelting furnace body and is used for heating a glass solidified body in a molten pool, the smelting furnace body is formed by piling up refractory bricks, a reserved gap value between the refractory bricks is smaller than a preset gap value, and the heat preservation body is an elastic heat preservation body. According to the electric melting furnace for the glass solidified body and the assembling method of the electric melting furnace, the electric melting furnace adopts a bottom discharging mode, the special requirements of the radioactive field on the aspects of heat preservation, shock resistance, insulativity and the like are met, no expansion gap is reserved in the electric melting furnace, the assembling process of electrodes and corresponding refractory bricks is defined, and the production efficiency is improved. And reliable use of the assembled electric melting furnace in a radioactive environment can be effectively guaranteed.

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.

A feedthrough for shielding against radioactive radiation includes electrical feedthrough conductors, a tubular metal housing, a connecting conductor, and shielding bodies. The tubular metal housing includes ends and seals, the ends including a seals so that an interior is formed in the tubular housing between the seals. The seals include an insulating body through which an electrical feedthrough conductor is fed so that the electrical feedthrough conductor is fixed in the seals while electrically insulated from the tubular housing. The connecting conductor extends in the interior and connects an electrical feedthrough conductor at one of the seals to an electrical feedthrough conductor at another of the seals. The shielding bodies, which are respectively interrupted by at least one opening therein, are arranged successively in an axial direction of the tubular housing, the connecting conductor being fed through the opening. The shielding bodies shield against radioactive radiation by way of shielding material.

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 invention relates to an all-fiber in-place sensor in a radioactive environment and an all-fiber in-place sensor system thereof, in particular to an optical fiber quick connector which is convenient for a mechanical operation arm to quickly plug and pull, and the position of a moving target in the closed radioactive environment is accurately sensed by utilizing a transmission collimated light beam blocking principle. According to the invention, full photoelectric passivity is utilized, a good radiation-resistant optical fiber type device is provided, the structure is compact, the cost is low, the positioning precision is high, the response speed is high, the sensing range is large, and the device can be rapidly detached and replaced, and the requirement for accurate detection of the position of a moving part in an extreme hot chamber environment is met.

The invention discloses a sterile bottle for radiopharmaceuticals, and relates to the field of medical instruments, the sterile bottle comprises a bottle body, the bottle body is made of high density polyethylene and nano yttrium oxide composite modified materials; the bottle opening gasket is of a sandwich layered structure and comprises a puncture contact layer made of a medical-grade polytetrafluoroethylene film and with the thickness of 1-2.5 mm; the elastic sealing layer is made of brominated butyl rubber, and the thickness of the elastic sealing layer is 3-5 mm; and the adhesive interface layer is positioned between the puncture contact layer and the elastic sealing layer and is used for realizing the compounding of the layered structure. According to the present invention, the modified bottle body is formed by compounding the HDPE and the Y2O3 material, such that the gamma ray energy can be effectively captured and can be converted into the heat energy for diffusion, the breakage of the HDPE molecular chain due to the high energy ray impact can be reduced, the radiation aging resistance can be significantly enhanced, and the service life of the sterile bottle in the radioactive environment can be prolonged so as to meet the long-term safe storage requirement of the radioactive drug.

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.

Drilling device (10) for machining tubes (66) on tube sheets (64) of heat exchangers in a radioactive environment, comprising a transport device (12) having clamping elements (18, 24), characterized in that a drilling device (16) having clamping fingers (30) is held by the transport device (12), that the clamping elements (18, 24) and the clamping fingers (30) are arranged on a common first side of the drilling device (16) and the transport device (12), that the transport device (12) and the drilling device (16) are connected to a support device (14), that the support device (14) has a support plate (50) on which a support plate (28) of the drilling device (16) rests, that the support plate (50) is connected to the support plate (28) by at least one movable connecting element (62), that the support plate (28) is connected to the support plate (50) in a first position of the connecting element (62) is connected without play,that the support plate (28) has a predeterminable play relative to the carrier plate (59) in a second position of the connecting element (62).

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.

A system for radioactive contamination sampling includes a mounting tray for coupling to a robot deployed in a radioactive environment, and one or more sampling containers releasably coupled to the tray to maintain the position of the containers. The container (one or more) includes a cup portion and a lid portion having a sampling surface configured to be disposed in the cup portion. The lid portion is releasably coupled to the cup portion through a sealing surface to seal the sampling surface internally, thereby preventing contamination of the sampling surface. A sampling surface extends from the cap and is configured to collect a sample from the surface. Each container also includes an abutment member coupled to the lid portion, the abutment member shaped to be gripped by the robot and to pivot about a coupling point with the container lid portion.

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.