520 results about "Heat leakage" patented technology

The invention discloses a cage type structure for superconducting joint protection and magnet support and a superconducting magnet, and relates to the technical field of superconducting magnets, and the cage type structure comprises a support column, a support ring, a cold conducting disc, a cold conducting disc reinforcing plate, an axial pull rod, a radial pull rod, a superconducting joint, a joint protection cover, a superconducting coil and a superconducting coil skeleton. According to the invention, the cage-type frame formed by the supporting columns, the supporting rings, the cold conducting discs and the cold conducting disc reinforcing plates is designed, and the axial pull rods and the radial pull rods are combined, so that the superconducting joint protection and the magnet support are realized through a simple structure; the radial pull rod is fixedly connected with the outer side of the supporting ring in the radial direction, the heat conduction distance between the superconducting coil and the outer Dewar assembly is prolonged, heat leakage is reduced, sufficient strength is achieved, meanwhile, the radial pull rod is located at the bottom of the cage type structure, the operation space is sufficient, and installation and maintenance are convenient.

The invention provides an optimal design method of an ultralow-temperature multi-load heat insulation support, a support assembly and an experimental research method, and relates to the field of large superfluid helium low-temperature distribution systems. Comprising the following steps: selecting thickness parameters of a casing pipe in each stage of temperature zone of a supporting assembly and a supporting panel as optimization design parameters to carry out parametric modeling, and introducing a stress maximum value and a heat leakage value as target values; and based on the thickness parameters of the cold shield sleeve and the supporting panel of each stage of temperature zone, taking a genetic algorithm as an optimization function, performing iterative calculation in combination with simulation software, obtaining the thickness parameters of the cold shield sleeve and the supporting panel under the optimal boundary, determining the heat leakage value and the maximum stress value of the supporting assembly according to the optimal boundary, and then processing the supporting assembly. By combining various simulation technical means and experimental research, the problems of poor performance of the support assembly, lack of process verification and the like caused by the adoption of a classic model are solved, and the rigidity and robustness of the large-scale superfluid helium transmission and distribution system are effectively optimized and improved.

The invention provides an aerogel improved honeycomb polyurethane heat insulation module. The aerogel improved honeycomb polyurethane heat insulation module comprises a polyurethane foam core, a heat insulation rod and an insulation box body. The heat insulation rod is arranged in the polyurethane foam core and comprises an outer shell defined by a film with a structure protection function, and aerogel is filled in the outer shell. The polyurethane foam core is of a honeycomb structure and comprises the peripheral edge of the polyurethane foam core and a plurality of wall faces extending in the longitudinal direction. A plurality of adjacently arranged honeycomb holes are formed in the plurality of wall surfaces along a plane array extending transversely; the polyurethane foam core surrounds the side face of the heat insulation rod. The insulation box body surrounds the outer surface of the polyurethane foam core, and the polyurethane foam core top face insulation box body and the polyurethane foam core bottom face insulation box body completely cover the polyurethane foam core and the polyurethane foam core side face periphery insulation box body. According to the technical scheme, the heat leakage loss of liquefied natural gas in the storage and transportation process can be reduced according to the higher heat insulation requirement of a heat insulation module in an existing LNG containment system and the material physical property based on polyurethane and silicon dioxide aerogel.

The utility model provides a vehicle-mounted liquid hydrogen storage tank and a vehicle, and relates to the field of vehicle engineering technology. The vehicle-mounted liquid hydrogen storage tank comprises: a tank body and a spiral rib installed inside the tank body, and the outer ring of the spiral rib is welded to the tank body. Compared with welding multiple baffles separately, the processing efficiency is higher, which is conducive to reducing the production cost of the liquid hydrogen storage tank. The spiral rib can separate the impact of liquid hydrogen, and can also separate the thermal stratification caused by heat leakage, shaking and flashing. The temperature difference of each divided part is small, and then the overall temperature difference is also small, which reduces the degree of thermal stratification to a certain extent, thereby achieving the technical effects of preventing liquid hydrogen from shaking and reducing the degree of thermal stratification.

The invention discloses a liquid hydrogen container heat leakage prediction and boost characteristic detection method and system. The method comprises the following steps: establishing a three-dimensional heat flow field model of a liquid hydrogen container; calculating the heat flow density of a gas-liquid interface based on the three-dimensional heat flow field model so as to adjust the liquid hydrogen evaporation capacity; total heat leakage is obtained through finite element simulation and experimental data collaborative calibration; calculating a static evaporation rate according to the total heat leakage; establishing a nonlinear mapping model of the static evaporation rate and the boost rate through a response surface regression method; the wall temperature distribution of the liquid hydrogen container is monitored in real time, thermophysical parameters are calibrated through the LSTM neural network by adopting a dynamic calibration algorithm, and the output result of the three-dimensional heat flow field model is corrected. By establishing a three-dimensional heat flow field model of the liquid hydrogen container, determining a nonlinear response relationship between the evaporation rate and the pressure rising rate of the liquid hydrogen container, and constructing a cloud-edge collaborative detection system, the heat leakage performance of the liquid hydrogen container is accurately predicted, and efficient pressure rising rate detection is realized.

The invention discloses an inverted 2K liquid-helium-free low-temperature probe station based on a GM refrigerating machine. The inverted 2K liquid-helium-free low-temperature probe station comprises a 2K plate, a vacuum cavity, a refrigerating system and a heat insulation assembly. The refrigerating system comprises a GM refrigerating machine, a thermal switch and a helium circulating system, and the GM refrigerating machine adopts a two-stage GM refrigerating machine, is inverted and extends into the vacuum cavity; the helium circulation system comprises a superflow helium pool installed at the bottom of the 2K plate, the helium circulation system takes away the cooling capacity of the refrigerating machine through circulation helium, the temperature is further reduced through throttling cooling and evacuation pressure reduction, and a 2K low-temperature environment is achieved at the 2K plate. The thermal switch provides cooling capacity for the 2K plate during initial operation so as to realize cooling; the heat insulation assembly comprises multiple stages of heat radiation screens and is used for reducing radiation heat leakage to the vacuum cavity. The 2K plate layout with the 2K plate temperature lower than 2K and the upward direction can be provided, and extra refrigerating working media such as liquid helium are not consumed.

The invention discloses a through-type heat exchanger for controlling heat leakage between different last cold stages of a dilution refrigerator and a manufacturing method, and particularly relates to the technical field of refrigeration and low-temperature engineering, the through-type heat exchanger comprises an inlet connecting pipe, an annular upper sealing plate, a heat exchanger shell, an annular lower sealing plate, an outlet connecting pipe and a metal sintering body, an inner wall face fixing step is fixedly arranged on the inner wall of the heat exchanger shell, the inner wall face fixing step is close to an opening in the bottom end of the heat exchanger shell, the metal sintering body is arranged in the heat exchanger shell and is tightly matched with the heat exchanger shell, and the length of the metal sintering body is slightly smaller than that of the heat exchanger shell. By arranging the metal sintering body, the heat exchange area is increased to the maximum extent within the limited volume, the porosity and the specific surface area of the metal sintering body are reasonably set, and therefore stable flowing and diffusion of the helium-3 / helium-4 mixed working medium are achieved.

An automobile thermal management system comprises a refrigerant circulating system, a cabin cooling liquid circulating system and a passenger cabin cooling liquid circulating system which are connected with one another, a four-way reversing valve component is adopted in an agent side module or assembly, and a water path system is simplified while the agent side loop reversing function is achieved through a plate heat exchanger; compared with the prior art, the number of the water valves is greatly reduced, so that high quality risks such as inner leakage, heat leakage and high mode switching frequency caused by the quality of the water valves are reduced, and the quality risks are greatly reduced after the water valves are simplified.

A liquid hydrogen storage tank capable of eliminating thermal stratification with low turbulence relates to the field of liquid hydrogen storage and comprises a tank body and a spray rod mechanism arranged in the tank body, the spray rod mechanism is communicated with a liquid hydrogen circulation pipeline, and liquid hydrogen in the tank body is extracted by the liquid hydrogen circulation pipeline and sprayed to a heat leakage point through the spray rod mechanism. The spray rod mechanism comprises a main guide pipe and a plurality of branch guide pipes, the tail ends of the branch guide pipes are provided with distribution assemblies attached to the heat leakage points, and the distribution assemblies are of structures defined by elastic metal wire meshes and filled with porous media, so that liquid hydrogen is dispersed and sprayed to the heat leakage points through the porous media, and turbulence of the liquid hydrogen is reduced. The spray rod mechanism is arranged in the storage tank, and the liquid hydrogen is directly sprayed to the heat leakage point by utilizing the guide pipe and the distribution component of the spray rod mechanism, so that turbulence of the liquid hydrogen in the tank is reduced, and evaporation of the liquid hydrogen caused by heat leakage is slowed down.

The utility model discloses a helium cooler for a liquid helium temperature zone. The helium cooler comprises a vacuum cavity and a vacuum flange cover fixed above the vacuum cavity in a sealed mode. A cold shield, a liquid helium cavity, a liquid nitrogen cavity and a liquid helium cavity suspender are arranged in the vacuum cavity; the liquid helium cavity and the liquid nitrogen cavity are both arranged in the cold shield, and the liquid nitrogen cavity is located above the liquid helium cavity. The upper end of the liquid helium cavity suspender is fixed with the vacuum flange cover, the lower end of the liquid helium cavity suspender is fixed with the liquid helium cavity, and the middle section of the liquid helium cavity suspender is fixed with the inner side of the cold shield; a heat exchange coil pipe and a liquid level meter are installed in the liquid helium cavity, a cold shield coil pipe is installed on the outer side of the cold shield, and the cold shield coil pipe is connected with the liquid nitrogen cavity; the vacuum flange cover is provided with a heat exchange coil inlet pipe and a heat exchange coil outlet pipe, and the heat coil inlet pipe and the heat exchange coil outlet pipe are connected with the two ends of the heat exchange coil respectively. According to the utility model, the helium working medium in other states is cooled to a liquid helium temperature area by using liquid helium, so that the low heat leakage is ensured, and the structural strength is good.

The invention discloses a low-temperature transmission pipeline heat leakage test system, which is characterized by comprising a data processing unit, a main valve box, a rear connecting box, an exhaust measuring device and a test sample section, the main valve box is hermetically connected with the exhaust measuring device through the test sample section; low-temperature working medium input and output pipelines and cold shield medium input and output pipelines are arranged in the main valve box; a low-temperature valve, a heater, a pressure transmitter, a temperature sensor and a safety valve are arranged on the low-temperature working medium input pipeline; the low-temperature transmission pipeline to be subjected to heat leakage test in the test sample section and the low-temperature working medium loop pipeline in the rear connecting box form a low-temperature working medium transmission channel; a cold shield medium transmission channel is arranged to provide a cold shield for the low-temperature working medium transmission channel; the low-temperature working medium output pipeline is connected with the recycling air bag through the exhaust measuring device and is used for recycling the low-temperature working medium; the data processing unit calculates the enthalpy of the low-temperature working medium at the outlet and the enthalpy of the inlet of the low-temperature transmission pipeline according to the temperature and the pressure, and obtains the heat leakage value through the enthalpy difference.

The invention relates to the technical field of low-temperature valve testing, in particular to low-temperature valve heat leakage testing equipment and method.The equipment comprises a double-chamber container internally provided with a testing chamber and a storage tank chamber which are isolated, a liquid nitrogen storage tank is located in the storage tank chamber and connected with a blow-down pipe and a liquid inlet pipe which penetrate out of the storage tank chamber, and the liquid nitrogen storage tank is connected with a liquid outlet pipe; the test air inlet pipe is communicated with a valve to be tested or a replacement pipeline; the evaporation measurement device is communicated with the test gas outlet pipe and the liquid nitrogen storage tank, the test gas outlet pipe is located in the test cavity and used for being communicated with a valve to be tested or a replacement pipeline, and the evaporation measurement device is used for measuring the evaporation capacity of liquid nitrogen; the vacuum generating device is communicated with the testing chamber and the storage tank chamber through a vacuumizing pipe, and the vacuum degree of the testing chamber and the vacuum degree of the storage tank chamber are independently controlled. The device effectively eliminates the influence of heat leakage of the device and environmental factors, achieves the accurate testing of the heat leakage of the low-temperature valve, achieves the more accurate evaluation of the performance of the valve, and is suitable for the performance evaluation scene of a cryogenic medium valve.

The present invention relates to a super-large cooling capacity dilution refrigerator, comprising a superfluid helium refrigeration module and a dilution refrigeration module. The super-large cooling capacity dilution refrigerator adopts a large superfluid helium refrigerator as a pre-cooling unit, which overcomes the shortcomings of the traditional pre-cooling method such as limited pre-cooling capacity and inconvenient operation, greatly improves the pre-cooling capacity, and thus makes the super-large cooling capacity dilution refrigerator possible; the dilution refrigeration module comprises a 5K 3 He low temperature circulation pump, distiller, heat exchanger group and mixing chamber, this ultra-large cooling capacity dilution refrigerator adopts 5K 3 He low temperature circulation pump replaces the traditional room temperature circulation pump, 5K 3 He cryogenic circulation pump has a compact structure and low vibration, which reduces the heat loss caused by vibration, and 5K 3 The He low-temperature circulating pump is set in the vacuum chamber, which avoids heat loss along the circulating pump pipeline from room temperature to the low-temperature vacuum chamber, reduces heat leakage, and greatly saves 3 The use of He is beneficial to the current extremely scarce 3 Development and application of large-capacity dilution refrigerator products under the current situation of He.

The utility model relates to a cold shield of a low-temperature container. Comprising a barrel and a plurality of supporting assemblies. The barrel is arranged between the inner shell and the outer shell in a sleeving manner; the inner shell is used for containing a low-temperature medium, and vacuum is formed between the inner shell and the outer shell; each supporting assembly is arranged on the outer wall of the cylinder body; each supporting assembly comprises a bolt, two gaskets, a locking nut and a cylinder, a groove is formed in one end of each cylinder, and an internal thread is arranged in each groove; the wall face of the barrel is provided with through holes which correspond to the supporting assemblies one to one and allow the corresponding bolts to penetrate through, the two gaskets are arranged on the two sides of the wall face of the barrel respectively and fixed through the bolts and the locking nuts, and the cylinders are installed at the outer ends of the bolts in a screwed mode through the internal threads. The outer end of the bolt faces the side where the shell is located. The fixing structure is firm in fixing and low in heat leakage rate.

The invention provides a reaction kettle, and belongs to the technical field of chemical pharmacy. Comprising a reaction kettle, a kettle cover is movably installed at the top of the reaction kettle, a first motor is installed in the center of the top of the kettle cover, a stirring assembly fixedly connected to a driving shaft of the first motor is arranged below the kettle cover, a plurality of sets of stirring rods are fixedly connected to the two sides of the stirring assembly, and a sealing assembly is arranged at the joint of the kettle cover and the reaction kettle. A mounting frame is arranged on the periphery, close to the bottom, of the reaction kettle, and a rotating assembly is arranged at the joint of the reaction kettle and the mounting frame. According to the reaction kettle, not only can the joint of the reaction kettle and the kettle cover be sealed in the reaction process to effectively prevent heat leakage from influencing the reaction effect, but also raw materials can be stirred more thoroughly through different reverse rotation of the stirring rod and the reaction kettle body, so that the reaction rate of the raw materials is effectively improved.

The utility model discloses a sealing heat preservation structure of a bridge type furnace body, the bridge type furnace body is formed by splicing a plurality of heat preservation plates, a splicing position is arranged between every two spliced heat preservation plates, and the sealing heat preservation structure of the bridge type furnace body comprises sealing cotton and a strut angle plate; the sealing cotton is laid on the side, facing the interior of the bridge type furnace body, of the splicing position and the side, back to the interior of the bridge type furnace body, of the splicing position so as to fill or cover a gap of the splicing position, and a blocking part is formed. The strut angle plate is arranged on the outer side of the blocking part and fixedly connected with the heat preservation plate so as to tightly press the sealing cotton. According to the bridge type furnace body, the sealing cotton is creatively laid at the splicing position of the heat preservation plates, the sealing cotton is tightly pressed and fixed through the angle supporting plates, gaps at the splicing position are sealed, heat in the bridge type furnace body is prevented from escaping through the gaps at the splicing position, and the problem of heat leakage of the bridge type furnace body is effectively solved.

The invention relates to the technical field of vehicle-mounted batteries, in particular to a vehicle-mounted battery pack heat leakage prevention management system which comprises a battery pack body, a heat management partition plate set, a liquid cooling system and an intelligent heat management control system. A plurality of single battery cabins are formed in the battery pack main body and are used for accommodating battery cells; the heat management partition plate group is arranged between the single battery cabins and comprises a porous partition plate, a heat conduction group and a bus bar, and an S-shaped inner hole runner and an overflow hole are formed in the porous partition plate and used for flowing and heat exchange of a heating medium working medium; and the heat conduction group comprises a heat conduction sheet and a deformation strip and is used for realizing flexible connection and heat management functions. Through the synergistic effect of the thermal management partition plate group, the liquid cooling system and the intelligent control system, accurate control and efficient heat exchange of the temperature of the battery module are realized, and the optimal working temperature range of the battery pack under different working conditions is ensured; under the condition of thermal runaway, the system forms a heat insulation barrier through separation of the heat-conducting fins and the porous partition plate, heat propagation is effectively blocked, and the system safety is improved.

The invention discloses a high-safety variable-temperature circulating temperature control system, which adopts a regenerative closed circulating structure design, main pipelines of a cold source unit and a distribution unit are respectively placed in a valve box, and the interior of the valve box is evacuated to form a vacuum environment, so that the convective heat exchange of residual gas molecules in the pipelines is reduced, the heat leakage of a low-temperature working medium is reduced, and the safety of the low-temperature working medium is improved. The pipeline temperature difference is reduced; furthermore, the system is provided with an independent nitrogen supplementing device and a nitrogen loop used for target disc temperature returning, automatic adjustment of a nitrogen working medium in the system is achieved, it is guaranteed that the nitrogen working medium stably circulates in the closed system, cold energy recovery and energy-saving utilization are achieved to the maximum extent, and therefore high-safety operation of the system is guaranteed through multi-linkage gas path control.

The invention relates to the technical field of superconducting magnets, and discloses a high-reliability and low-heat-leakage propeller magnet system which comprises a Dewar, a coil assembly and a plurality of sets of heat insulation supporting structures, the coil assembly is arranged in the Dewar and connected with the Dewar through the heat insulation supporting structures, the coil assembly comprises a coil framework, and the coil framework is arranged in the Dewar and connected with the Dewar through the heat insulation supporting structures. The coil body is wound on the surface of the coil framework, the heat insulation supporting structure comprises a hot ring, a cold ring and a pull rod, the two ends of the pull rod are connected with the hot ring and the cold ring respectively, the hot ring is connected with the Dewar, and the cold ring is connected with the coil framework. Through the integrally designed heat insulation supporting structure, the number of parts of the magnet structure is remarkably reduced, the supporting stability is improved, it is guaranteed that the center line of a magnetic field coincides with the center line of plume of the propeller, and heat leakage of the magnet is further reduced.

The invention belongs to the technical field of air conditioners, and relates to a defrosting control method and device, a medium and electronic equipment. The method comprises the steps that environment parameters of air conditioner operation are obtained, and the environment parameters reflect the environment load of the air conditioner; and according to the environment parameters, target defrosting modes of the air conditioner are determined for defrosting, wherein the target defrosting modes comprise the reverse circulation defrosting mode and the shock cooling prevention defrosting mode. The corresponding target defrosting mode is selected for defrosting on the basis of the environment parameters reflecting the environment load. The reverse circulation defrosting mode can be selected under the condition that the requirement for defrosting is high, the reliability of the defrosting effect is improved so that the reverse circulation defrosting mode can be suitable for application scenes with severe weather or serious heat leakage conditions, the shock cooling prevention defrosting mode can be selected under the condition that the requirement for indoor comfort is high, the influence of slow temperature rising caused by defrosting is reduced, and the defrosting effect is improved. And the indoor temperature rising efficiency and the user experience in the defrosting period are improved.

The invention discloses a stacked adiabatic liquid hydrogen spherical tank which comprises a liquid hydrogen spherical tank and a support mounted at the bottom of the liquid hydrogen spherical tank, and the liquid hydrogen spherical tank comprises a liquid hydrogen spherical tank outer wall and a liquid hydrogen spherical tank inner wall. The longitudinal partition plates and the transverse porous partition plates are arranged, so that the problem of cavities during small-amplitude shrinkage of the expanded perlite filler is effectively solved, meanwhile, the overall structural strength is improved, and the problem of pressure rise during temperature rise expansion of the expanded perlite filler is solved. The filler supplementing cavity is formed in the top of the longitudinal partition area, and meanwhile, the expanded perlite filler can pass through the transverse porous partition plate, so that when the expanded perlite filler is greatly shrunk, the filler in the filler supplementing cavity is supplemented, and an obvious cavity heat leakage point is prevented from being generated at the top of the liquid hydrogen storage tank. And the gas cooler and the inner-cooling adsorber are arranged, the gas cooler is driven to freeze by using the cooling capacity gradient of the low-temperature hydrogen, and the inner-cooling adsorber is driven to adsorb the gas influencing the heat insulation performance, so that the vacuum degree maintaining time in the liquid hydrogen spherical tank is prolonged.

The invention relates to a multistage coaxial nested cold shield structure for a dilution refrigerator, and relates to the technical field of refrigeration and low-temperature engineering, the multistage coaxial nested cold shield structure comprises a Dewar, the top of the Dewar is provided with a top plate in a sealing manner, and the Dewar is internally provided with a first-stage cold shield, a second-stage cold shield, a third-stage cold shield and a fourth-stage cold shield; the first-stage cold screen, the second-stage cold screen, the third-stage cold screen and the fourth-stage cold screen are coaxially arranged in a nested mode from outside to inside and from bottom to top, and the side walls of the first-stage cold screen, the second-stage cold screen, the third-stage cold screen and the fourth-stage cold screen are each provided with a plating layer and a heat insulation layer. The invention aims to gradually intercept radiation heat flow, minimize radiation heat loss of a low-temperature end, form a graded radiation heat flow barrier in a vacuum cavity of the dilution refrigerator, reduce heat leakage loss of each stage of structural component and guarantee efficient operation of dilution refrigeration cycle, and has the remarkable advantages of strong shielding effect, good thermal coupling with a system, compact structure and the like; and important positive significance is achieved for practical development of the dilution refrigerator.

The invention relates to the technical field of deep space exploration, in particular to a cryogenic propellant on-orbit low-loss storage system and method for a deep space probe. After the low-temperature propellant is injected into the storage tank through the injection pipe, along with continuous accumulation of external leaked heat, the first pressure sensor detects that the pressure in the storage tank is continuously increased, and when the numerical value of the first pressure sensor exceeds the preset pressure, the cooling assembly is started to cool the low-temperature propellant in the storage tank, so that the external leaked heat is consumed; before the engine needs to supply the low-temperature propellant, the low-temperature propellant in the storage tank is in a supercritical state, and the storage temperature is increased in a high-pressure storage mode, so that the temperature difference between the storage tank and the outside and the heat leakage amount are reduced, and the requirement for the refrigerating capacity of the cooling assembly is reduced; when the low-temperature propellant is conveyed, due to the fact that the low-temperature propellant is in a supercritical state and free of gas-liquid phase separation, the interior of the whole storage box is in a homogeneous state, the stable conveying flow of the low-temperature propellant can be guaranteed, and stable output of an engine is also facilitated.

The invention relates to the technical field of spacecraft thermal control, and discloses a self-adaptive thermal control system based on pump-driven two-phase flow and thermochromism cooperative regulation, and the system is dynamically coupled with a thermal switch and a thermochromism coating through a pump-driven two-phase flow loop to realize autonomous bidirectional regulation of a thermal environment in a spacecraft. When heat dissipation is needed in the cabin, the pump drives the two-phase flow to start, the temperature of the condenser rises to enable the bottom thermal switch to expand, the condensation plate is pushed to be in contact with the radiation heat dissipation plate to transfer heat, meanwhile, the thermochromic coating is heated to be in a high infrared emissivity state, and an active heat dissipation channel is constructed. And when heat dissipation is not needed, the temperature of the condenser is reduced, the thermal switch shrinks and resets, the condensation plate is separated from the radiation heat dissipation plate, the thermochromism coating recovers the low-emissivity state, and double blocking of physical isolation and radiation suppression of the heat dissipation channel is achieved. The contradiction between passive heat leakage and active power consumption of a traditional thermal control system can be solved, and the environmental adaptability and the energy utilization efficiency of a spacecraft thermal management system are improved.

The invention discloses a method and system for evaluating the demand response capability of a solid heat storage cluster for building heat supply. The method comprises the steps that S1, the heat supply area and the heat supply time of a heat consumer and voltage, current and heat storage body temperature information collected by solid heat storage through a measuring device are obtained; s2, heat loads in the same heat supply network are aggregated and superposed, a total heat load curve is calculated, and a heat supply curve of each solid heat storage unit is formulated according to the solid heat storage capacity in a weighted mode; s3, the dynamic model can calculate the heating capacity and the heat output and heat leakage according to the energy conservation principle by combining the heat load curve of the solid heat storage, and the temperature state of the heat storage body at the future moment is calculated; and S4, calculating the demand response capability under step-by-step power regulation according to the temperature state and the constraint condition of the heat accumulator. By the adoption of the technical scheme, the problem that in an existing heat supply station, a corresponding capability evaluation method is lacked when the solid heat storage cluster participates in demand response is solved.

The invention relates to the technical field of cables, in particular to a production method of a low-temperature superconductive low-heat-leakage superfine coaxial cable, the outer diameter of the coaxial cable is smaller than or equal to 1.5 mm, and the cable is provided with a core material, a first superconductive layer, a PTFE dielectric layer, a second superconductive layer and a stainless steel pipe from inside to outside; the production method comprises the following steps: coating the periphery of the core material with the first superconducting layer to prepare the inner conductor; coating the periphery of the inner conductor with a PTFE layer to form a medium wire core; longitudinally penetrating the strip-shaped second superconducting layer through a round hole mold with the inner diameter gradually reduced, and rolling into a hollow pipe with the outer diameter slightly smaller than the inner diameter of the stainless steel pipe; and synchronously pulling the hollow pipe into the stainless steel pipe, pulling the medium wire core into the hollow pipe in the stainless steel pipe, and completing cable assembly. Pulling the cable through a round hole die with the inner diameter smaller than the outer diameter of the stainless steel pipe for reducing extrusion; in inert gas or high vacuum, the internal stress of the cable is released through heating. The second superconducting layer lining is longitudinally covered in the stainless steel tube, so that the problem that the inner wall of the extremely long and thin tube is difficult to uniformly plate the superconducting layer is solved.

The invention discloses a film type liquefied natural gas composite enclosure structure which comprises a main screen wall, a main shielding layer, a composite secondary screen wall and a secondary shielding layer which are connected layer by layer, the main shielding layer and the secondary shielding layer are made of first porous materials, and the first porous materials of the main shielding layer and the secondary shielding layer are connected with plywood respectively. The main shielding layer, the composite secondary shielding wall and the secondary shielding layer are connected through low-temperature glue, the main shielding wall is a corrugated metal plate, a plywood of the main shielding layer is pasted with a non-metal connecting piece, and the non-metal connecting piece is connected with the corrugated metal plate through the low-temperature glue. The invention further provides an assembly method of the thin film type liquefied natural gas composite enclosure structure. The strength of the enclosure structure is improved, heat conduction and heat leakage of the connecting pieces are reduced, and the construction difficulty is lowered.

The invention provides a thermal management system and a vehicle. The thermal management system comprises a battery flow path, an electric drive flow path, an expansion kettle and a switching valve. The battery flow path includes a battery fluid pump. The electric drive flow path comprises an electric drive liquid pump. The expansion kettle comprises a first liquid supplementing opening and a second liquid supplementing opening which are communicated. When the switching valve is in a first state, the battery flow path is communicated with the electric drive flow path, so that a first cooling liquid loop flowing through the battery flow path and the expansion kettle and a second cooling liquid loop flowing through the electric drive flow path and the expansion kettle are formed. And the battery liquid pump is used for realizing circulating flow of the cooling liquid in the first cooling liquid loop. And the electric drive liquid pump is used for realizing circulating flow of the cooling liquid in the second cooling liquid loop. When the switching valve is in the second state, the battery flow path is separated from the electric drive flow path, and the expansion kettle is used for supplementing water to the battery liquid pump and the electric drive liquid pump through the first liquid supplementing opening and the second liquid supplementing opening respectively. Therefore, the heat leakage amount of the heat management system is reduced.

The present application discloses a loading intensity design method for a variable-temperature component and a related product, which can be applied to the technical field of superconducting magnets. The method comprises: acquiring a temperature-dependent material yield strength function of a variable-temperature component; using finite element software to perform temperature field analysis and stress field analysis on the variable-temperature component to obtain the temperature and the von Mises stress of each grid node of the variable-temperature component; on the basis of the material yield strength function, substituting the temperature and the von Mises stress of each grid node into a loading intensity function for analysis to obtain an analysis result; and on the basis of the analysis result, optimizing the variable-temperature component to implement structural design of the variable-temperature component. In this way, temperature field analysis and stress field analysis are performed on the variable-temperature component, and on the basis of the material yield strength function, the loading intensity function is used for analysis, so as to optimize the structure of the variable-temperature component, so that the variable-temperature component has an optimal structural size, thereby improving the lightweight level which reducing heat leakage.

The furnace door control structure comprises a furnace door opening and closing assembly for controlling a furnace door to move relative to a furnace opening, so that the furnace opening is opened or closed; the furnace door opening and closing assembly is connected with the furnace door through a plurality of fine adjustment assemblies of the furnace door, each fine adjustment assembly comprises a rotating part connected with the furnace door and a positioning part connected with the furnace door opening and closing assembly, and the positioning parts and the rotating parts are controlled by adjusting parts to rotate relatively around a rotating shaft. And the angle of the furnace door can be adjusted in multiple directions relative to the furnace opening. The invention provides a furnace door control structure with multi-stage adjustment and accurate positioning functions to solve the problems that in existing PECVD equipment, fitting precision of a furnace door and a furnace opening is insufficient, sealing performance is poor, and heat is prone to leakage. According to the structure, the furnace door can open or close the furnace mouth through the furnace door opening and closing assembly, and the furnace door can be subjected to micron-order posture correction in a three-dimensional space by combining multi-dimensional angle adjustment of the fine adjustment assembly, so that the fitting precision of the furnace door and the edge of the furnace mouth is remarkably improved.