140 results about "Hot cell" patented technology

The invention discloses a double preheating and heat-accumulating energy-saving boiler using low-calorie fuels, comprising a furnace body. Two or a plurality of burners are arranged in the furnace body; each burner is provided with a high-temperature combustion-air inlet and a high-temperature fuel inlet; the high-temperature combustion-air inlet and the high-temperature fuel inlet are connected with an air heat-accumulating chamber and a fuel heat-accumulating chamber respectively; and a plurality of burners are adopted for combustion and smoke venting in turn. Firstly, the recovery of waste heat is conducted through the air/fuel heat-accumulating chamber during exhausting smoke, as a result, the loss of heat-energy is reduced and the combustion efficiency is improved; secondly constant-temperature combustion-air and low-temperature fuels are preheated and mixed by the air heat-accumulating chamber and the fuel heat-accumulating chamber for combustion, and as a result, the combustion temperature is increased; thirdly, a plurality of burners adopt periodical reversing combustion, and as a result, the local high-temperature area in the combustion chamber is eliminated, the temperature in the combustion chamber is distributed more evenly, and the service life of the furnace is prolonged.

The invention relates to a measurement method for thermal performance of a phase change building heat-insulation material used in buildings. The measurement method comprises the steps of dividing the chamber body of a simulated test chamber into a hot chamber and a cold chamber; separating the hot chamber and the cold chamber with a to-be-tested specimen of a phase change energy storage building material, wherein a heat generating device and a refrigerating device are installed in the hot chamber and the cold chamber respectively, a heat-flow meter is adhered at the middle position of the to-be-tested specimen in the hot chamber, thermal resistances are adhered on the top edge and the bottom edge of the heat-flow meter, a thermal resistance is adhered in the cold chamber at a position corresponding to that of the heat-flow meter in the hot chamber, and the heat-flow meter and the thermal resistances are connected with a paperless recorder; opening the heat generating device and the refrigerating device; automatically recording the temperature and the heat flow density at two sides of the to-be-tested specimen in the hot chamber and the cold chamber when the temperature of the cold chamber reduces to an outdoor average temperature of a heating period, and the temperature of the hot chamber of the simulated test chamber reaches to 18 DEG C; working out the thermal resistance of the and phase change energy storage material layer; and calculating the energy-saving effect of the specimen of the phase change energy storage building material according to a relationship of the heat transfer coefficients regulated by pyrology.

A method for managing hot cell devices includes receiving at least one of location information of at least one hot cell device, type information of at least one hot cell, location information of at least one terminal and uplink signal energy of at least one terminal measured by a hot cell device. The method also includes determining a hot cell device to be opened using the at least one of the location information of at least one hot cell device, the type information of at least one hot cell, the location information of at least one terminal and the uplink signal energy of at least one terminal. In addition, the method includes transmitting a message instructing the hot cell device to open.

The invention discloses a high-temperature gas generating device on the basis of porous medium combustion and heat storage. The high-temperature gas generating device comprises a first porous medium heat storage chamber, a first porous medium combustion chamber, a high-temperature flue gas distribution chamber, a second porous medium combustion chamber and a second porous medium heat storage chamber which are sequentially communicated with one another; the first porous medium heat storage chamber is communicated with the second porous medium heat storage chamber by a four-way reversing valve, and other two ports of the four-way reversing valve are respectively connected with an air pipeline and a low-temperature flue gas pipeline; the first porous medium combustion chamber and the second porous medium combustion chamber are respectively connected with a first fuel gas pipeline and a second fuel gas pipeline; and a high-temperature flue gas pipeline is arranged on the high-temperature flue gas distribution chamber. The high-temperature gas generating device is additionally provided with a porous medium combustor on the basis of a heat storage combustor, gas such as gas of coal mines and industrial exit gas with a low heat value can be combusted to generate high-temperature gas, fuel gas can be directly filled into the combustion chambers without being premixed, and accordingly the high-temperature gas generating device is high in safety.

The invention provides a method of maintaining a cell including a wall pierced by a cavity fitted with a monitoring or observation instrument, the instrument comprising a dome projecting into the inside of the cell, a protection shield, an observation sensor arranged between the dome and the shield, and a travel mechanism for moving the sensor between a position retracted inside the cavity and a deployed position. The method comprises the following operations:

extracting the protection shield, the observation sensor, and the sensor travel mechanism out from the cavity, to the outside of the cell;

where appropriate, replacing the observation sensor;

inserting a replacement dome into the cavity and sliding it into the proximity of the dome that has remained in position in the cavity;

inserting the protection shield, the observation sensor and the sensor travel mechanism into the cavity and sliding them into contact with the replacement dome; and

moving the dome that has remained in position in the cavity until it is expelled into the inside of the cell, by pressing the replacement dome against the dome that has remained in position.

In cancer brachytherapy treatment, a small californium-252 neutron source capsule is attached to a guide cable using a modified crimping technique. The guide cable has a solid cylindrical end, and the attachment employs circumferential grooves micromachined in the solid cable end. The attachment was designed and tested, and hardware fabricated for use inside a radioactive hot cell. A welding step typically required in other cable attachments is avoided.

An adiabatic concrete calorimeter includes a thermal chamber and a heat well subassembly for being positioned in the thermal chamber. The heat well subassembly includes a test cylinder container and a test cylinder mold adapted to be positioned in the test cylinder container for defining the shape of a concrete test specimen formed in the test cylinder mold. Temperature sensors determine the temperature of the concrete test specimen, and transmit temperature data from the temperature sensors to a controller. Electrically-energized heaters are positioned on a surface of the test cylinder container for applying heat to the test cylinder container. A controller determines heat loss of the concrete test specimen and outputs data to the heaters whereby the heaters supply heat to the concrete test specimen sufficient to compensate for heat losses to an ambient environment and maintain the heat of hydration of the concrete test specimen.

The invention relates to a remote control maintenance method and device in a hot cell, especially a remote control maintenance method and device based on human factor simulation analysis in a mode of human factor simulation movement analysis and optimization maintenance. The method comprises the steps: 1) building a remote control maintenance device through Catia three-dimensional modeling software, and constructing a virtual three-dimensional remote control maintenance operation environment; 2) building a virtual human and simulation movement thereof; 3) setting an index inspection value interval of each index evaluation system as [0, 1], and setting the limits of the interval; 4) obtaining the value intervals of all indexes; 5) comprehensively evaluating the whole index of remote control maintenance according to interval vectors of all index factors and the evaluation indexes; 6) comprehensively improving a weak index in a process of maintenance operation. The method and device effectively prevent and control problems, demanding a prompt solution, of remote control maintenance, optimize the operation of remote control maintenance, improve the reliability and safety of the remote control maintenance, and improve the work efficiency and operation precision.

The invention relates to a high-wind-temperature hot blast heater with an automatic air preheater, which can effectively solve the problems of combustion-supporting air preheating, coal gas and air mixing, insufficient combustion, low wind temperature, complex equipment configuration and high energy consumption. The structure of the high-wind-temperature hot blast heater with an automatic air preheater is as follows: the inner circumference of the wall of a combustor is provided with coal gas nozzles and air nozzles in a staggered mode, and communicated with a premixing annular channel; the upper part in the wall of the annular combustor is provided with a coal gas distribution annular channel, and the outer wall surface is provided with a coal gas intake pipe; a combustion-supporting air preheater is arranged in the large wall of a heat accumulation chamber, the upper part is arranged in the wall of the combustor and enters the premixing annular channel through the nozzles, the lower part is communicated with a combustion-supporting air distribution annular channel in the wall of the heat accumulation chamber, and the outer wall surface is provided with a combustion-supporting air intake pipe; a cold wind chamber is arranged under the heat accumulation chamber, and the wall of the cold wind chamber is provided with a fume discharge pipe and a cold wind intake pipe; and a heat accumulator in the heat accumulation chamber is arranged on a grate which is fixed on a rigid base of the hot blast heater. The invention has the advantages of investment saving, high efficiency, energy saving, environmental protection and long service life.

A process and apparatus by medium-temperature smoke preheated and combustion-supporting air and gas in hot-air furnace are disclosed. The process is carried out by mixing medium-temperature smoke with low-temperature smoke or heat exchanging to obtain high-heat value smoke, preheating to obtain high-heat value combustion-supporting air and gas, setting smoke outlet in medium-temperature area of regenerative chamber, gas-flow exchanging and leading out preheated combustion-supporting air and gas partially. It's cheap, simple, has more heat efficiency and occupies less space.

The invention relates to a radioactive surface strippable detergent and a preparation method thereof, and belongs to the technical field of application of polymer chemical coating materials to nuclearfacility surface radioactive decontamination. The radioactive surface strippable detergent is prepared by taking polyvinyl alcohol as a main film-forming agent, taking water as a solvent and adding an auxiliary agent, wherein the auxiliary agent is prepared from the following components: a gelatinizing agent, a dispersing agent, a reinforcing agent, a surfactant, an adhesive, a chelating agent, an auxiliary film-forming agent, a lubricating agent, an anti-freezing agent, a plasticizer, Vaseline, an emulsifying agent and a thickening agent. The prepared strippable film detergent is good in film-forming property, long in quality guarantee period and good in strippability, and can meet the operation requirements of short-term and medium-term storage and stainless steel surfaces for radioactive waste pits and hot chambers.

The invention relates to a radioactive substance transfer method and provides a sampling method for liquid samples in a hot cell, so as to solve the problems that the sampling accuracy is poor, the labor intensity of an operator is high, the sampling efficiency is low and the like in the prior sampling method for the liquid samples in the hot cell. The method comprises the following steps: a dilution liquid dispensing apparatus and a fluorinated ethylene propylene tube form sampling equipment, and liquid for sealing and a certain amount of air control liquid samples to be transferred inside the hot cell inside the fluorinated ethylene propylene tube; and liquid sample transfer from outside the hot cell to inside the hot cell can be finished in a mode of direct injection by the sampling equipment. The sampling method for liquid samples in a hot cell has the advantages that sampling accuracy is good, the labor intensity of the operator is low, the sampling efficiency is high, reagent transfer from outside the hot cell to inside the hot cell is excessively convenient, and the radiation protection risk is low, and the problems of equipment maintenance and waste processing can be well solved.

The invention discloses a hot cell crane. A first driver at least comprises a first motor, and the output end of the first driver is connected with a first linear transmission mechanism. A second driver at least comprises a second motor, and the output end of the second driver is connected with a first torque transmission mechanism. A first slip angle gearbox is in sliding fit with the first torque transmission mechanism. A third driver at least comprises a third motor arranged at the outer part of a shielded room, and the output end of the third driver is connected with a second torque transmission mechanism. A second slip angle gearbox shifting in the axial direction of the second torque transmission mechanism is arranged on the second torque transmission mechanism. A winding drum mechanism is arranged on a walking mechanism, the input end of the winding drum mechanism is connected with the output end of the first slip angle gearbox, a lever mechanism is further arranged on the walking mechanism, and a lever of the lever mechanism is connected with the output end of the second slip angle gearbox. The hot cell crane has the advantages that electric equipment of the hot cell cranecan be protected from nuclear radiation.

The invention relates to a method and a device for purifying and recycling cleaning waste gas of a hot cell of a fusion reactor by cryogenic rectification. The method comprises six technological processes including a decontaminating cleaning technology, a filtration and purification technology of solid and liquid-state impurities, a carbon dioxide cryogenic rectification separation technology, a low-temperature power gas preparation technology, a volatile granule regeneration technology and a long-distance pneumatic transmission technology. Radioactive particles and residual radioactive gases are collected in a sorting way together with or separated from a cleaning medium by utilizing the original cleaning waste gas. The effect that radioactive wastes in the hot cell are minimized can be realized. The radioactive particles and gaseous nuclear fuel are effectively collected while the cleaning waste gas is enabled not to pollute the environment as radioactive effluent, and an originally used cleaning medium is enabled to be recycled; on the basis, a carbon dioxide dry ice blasting cleaning scheme becomes a first selected option for cleaning a polluted radioactive surface in the hot cell; furthermore, the process scheme is simple in loop structure and easy to implement, thus being suitable for the remote control operation hot cell environment.

The invention provides a shrinkage cavity and shrinkage porosity prediction method for hot chamber die casting, which comprises the following steps: S1, importing a configuration file and model information, performing solver pretreatment, setting control parameters of a shrinkage cavity and shrinkage porosity algorithm, and predicting the total shrinkage amount of a casting; s2, calculating the position and shape information of the isolated hot spot at every preset time step; s3, calculating the shrinkage value of the current hot spot according to the total shrinkage amount, and filtering unreasonable hot spot information; s4, when each hot spot is shrunk below a limit value, counting information of the hot spot; and S5, summarizing all the recorded hot spot information to form a shrinkage distribution diagram, and outputting the shrinkage distribution diagram to a result file.