47 results about "Thermally isolated system" patented technology

The invention relates to a high-temperature comprehensive property evaluation experimental device of a sealing spacer, comprising a spacer loading system, a flange lifting separation system, a spacerdeformation measuring system, a heating and temperature control measuring system, a cooling heat insulation system, a medium setting system, a medium sealing and leakage rate measuring system and a data acquisition system. The invention has the advantages of high parameter, convenient experiment, compact structure of a whole experimental machine, small occupying area, and the like, takes a low-pressure area as a leakage measuring cavity, enhances the measuring precision of the pressure of the leakage measuring cavity and also effectively avoids the problem of pipeline leakage caused by takinga high-pressure area as a leakage cavity so that the measurement of the sealing property of the spacer is more accurate; and in addition, the flange lifting separation system can solve the problem ofthe difficult bonding and separation of the high-temperature experimental spacer and a flange.

The invention discloses a database based complex-contour aircraft distributed heat environment parameter prediction method and belongs to the field of aircraft heat environment design. The method comprises the steps that an aircraft surface heat flow database is established, order reducing processing is conducted on the database by utilizing a POD method to obtain orthogonal basis vectors of the database, and aircraft surface heat environment parameters can be predicted along a ballistic trajectory by combining with a corresponding basic coefficient interpolation method. The method can really reflect the space distribution characteristics and interference characteristics of the aerodynamic heat environment for all points on the surface of a complex-contour aircraft. Value result comparison shows that the method can remarkably improve the computational efficiency, and prediction precision is not lost. A surface distributed heat flow is provided for calculation of a heat proof temperature field through the points along the ballistic trajectory, more exquisite temperature distribution can be obtained, and accordingly the design level of a whole heat preventing and insulation system is improved.

A thermal power measurement device is characterized in that the device comprises a calorimetry cylinder, a constant-temperature and heat-insulation system, a temperature equalization system, a calibration system, a signal processing and controlling system and a box body, wherein the calorimetry cylinder is a three-layer embedded composite structure; the inner-most layer is a sample chamber, the middle layer is semiconductor thermoelectric modules that are connected in series and the external wall is a constant-temperature layer; the sample chamber is internally provided with a thermocouple and a thermal resistor; the semiconductor thermoelectric modules are fixedly arranged between the sample chamber and the external wall by a mechanical method; the constant-temperature and heat-insulation system comprises a constant-temperature system and a heat insulation system; the constant-temperature system comprises a circular constant-temperature bath and a red copper fluid pipe; the red copper fluid pipe is closely attached to the external wall of the calorimetry cylinder; the inlet of the red copper fluid pipe is connected with the circular constant-temperature bath by a constant-temperature trough; the constant-temperature trough is internally provided with a remote temperature probe that is connected with the circular constant-temperature bath; the temperature equalization system comprises a fan that is arranged in the sample chamber; the calibration system comprises the thermal resistor; and the signal processing and controlling system comprises a computer and a data collecting card and is used for collecting signals in real time and controlling the fan power, calibration power and water bath temperature.

The invention discloses a four-element heat radiator for radiating the heat of a semiconductor thermoelectric device, which is characterized in that a working substance heat pump is made form materials with poorer heat-conducting property; and when the four-element heat radiator works under the condition of power failure or low power, liquid working substances in the working substance heat pump is siphoned into a gap of a siphon fin; a structure separation cavity is formed between the siphon fin and a motherboard so that the working substance heat pump becomes a heat insulating apparatus; when the four-element heat radiator works at the power of more than 60 percent of the rated power, large area of the liquid working substances in the working substance heat pump are heated to boil, and the boiling working substances containing latent heat cause the structure separation cavity to no longer exist while increasing the steam pressure rapidly to drive circular heat pipes to work, so that the working substance heat pump is turned into an extra good heat conduction path which can absorb the high-power heat with high heat flow density so as to realize a structure of secondary heat insulation and extra good heat transfer and radiation; therefore, the temperature difference of a heat insulation system and the environment is more than or equal to 40 DEG C, so that the semiconductor refrigeration becomes an energy saving refrigeration mode and can keep the temperature for more than 10 hours with a self-contained battery, and can be widely applied to moving refrigerators.

The invention provides a supercritical carbon dioxide Brayton cycle power component cooling, sealing and heat insulation system. The system comprises an annular gap between a machine shell and a mainshaft, wherein one end of the annular gap communicates with a compressor side leakage gap, a cold and hot working medium mixing chamber is arranged at the other end of the annular gap, the cold and hot working medium mixing chamber communicates with a turbine side leakage gap, and an exhaust hole communicating with the cold and hot working medium mixing chamber is formed in the machine shell. According to the supercritical carbon dioxide Brayton cycle power component cooling, sealing and heat insulation system, the annular gap is formed between the machine shell and the main shaft so that thelow-temperature leakage flow at the compressor side can be introduced into the machine shell so as to cool a motor, and is led out to a circulation system cooler through the exhaust hole after being mixed with the high-temperature leakage flow at the turbine side in the cold and hot working medium mixing chamber, then a high-temperature working medium can be prevented from damaging the main shaft,a bearing and a coil, and the structure is simple; and in addition, the main shaft is completely separated from the high-temperature working medium and a turbine through a heat-insulating sleeve, sothat the problem that the heat is transferred to the main shaft through the turbine is effectively solved.

The invention discloses a novel thermal insulation system for a free jet flow force measuring test model. The novel thermal insulation system includes a force measuring balance, a supporting rod, a balance protection cover, a thermal insulation assembly and a gas cooling assembly; the force measuring balance is arranged in a mould inner cavity; one end of the force measuring balance is connected with the mould inner cavity; one end of the supporting rod is connected with the other end of the force measuring balance; the balance protection cover is arranged on the force measuring balance in a covering manner so as to realize thermal insulation protection for the force measuring balance; the thermal insulation assembly includes a thermal insulation sleeve which is arranged along the circumferential direction of the supporting rod; a sealing space is defined between the thermal insulation sleeve and the outer circumferential surface of the supporting rod; labyrinth seal components are arranged on the supporting rod at intervals so as to divide the sealing space into at least three intervals; and the gas cooling assembly includes gas jetting rings which are located in the intervals and sleeve the outer circumference of the supporting rod, and a cold gas pipeline which is communicated with the gas jetting rings, wherein the cold gas pipeline is connected with a high-pressure cold gas source, and the gas jetting rings jet out a cooling gas to decrease the temperature of the mould inner cavity. According to the novel thermal insulation system of the invention, a plurality of thermal insulation and cooling means are adopted, and therefore, the novel thermal insulation system is remarkable in cooling effect and compact in structure, and can effectively control the temperature of the balance.

The invention relates to the technical field of nuclear power station heat insulation systems, in particular to a sampling method for quality inspection of a primary side end sealing partition plate of a nuclear power steam generator. According to the sampling method, various production factors and application conditions in the sampling process can be sufficiently considered, the overall quality of the primary side end sealing partition plate of the steam generator can be comprehensively inspected by virtue of hardness uniformity test, chemical component uniformity test, normal-temperature tensile test, high-temperature tensile test, room-temperature impact test, hardness test, grain size detection, distribution of carbides, nonmetal impurity analysis, and chemical analysis of finished products of the primary side end sealing partition plate of the steam generator, the production capability and management capability of a manufacturer can be verified, whether the quality of the primaryside end sealing partition plate of the steam generator meets the design and nuclear security requirement or not can be judged, the repeatability of the production quality can be ensured, the inspection items are effectively reduced, and the inspection cost is maximally decreased.

The invention provides a novel high-flux wide-temperature-range indentation testing device and testing method capable of measuring various mechanical properties (including elasticity modulus, yield strength, tensile strength, creep property and the like) of a material. The device can directly determine a contact zero of a pressure head and a test specimen through a fine tuning way, simultaneouslycan provide a temperature environment of 253DEG below zero to 1000DEG C, and can simultaneously carry out multiple groups of indentation tests under the same temperature environment. The device comprises a base, a sample platform, a force application system, a distance regulation system, a feedback control system, a measurement system, a temperature control system and/ or a thermal insulation system. By use of the device, the problem that an existing indentation testing device can not directly determine the contact zero of the pressure head and the test specimen, meanwhile, the problem that anexisting device can not simultaneously carry out multiple groups of indentation tests under the same temperature environment is also solved, the device and the method capable of testing a plurality of same test specimens or the test specimens of different sizes under one working condition are provided, and wide-temperature-range indentation testing is realized through the conversion of a temperature environmental box.

Disclosed herein is a heat insulating system of a floating structure, and more particularly, a heat insulating system of a floating structure in which a heat insulating material is provided at at least one of a ballast tank, a trunk deck space, and a side passage way contacting the trunk deck to decrease a boil-off rate (BOR) occurring due to a heat transfer from an external region of a hull into an LNG storage tank.

The invention discloses a magnetic fluid heat isolating device and a heat isolating system. The heat isolating device is used for connecting the magnetic guide shaft of a magnetic fluid device as well as a boat supporting shaft. The invention includes: a first flange connected with the magnetic guide shaft by a fixing piece, a second flange connected with the boat supporting shaft by a fixing piece, a heat isolating layer arranged between the first flange and the second flange as well as locking elements for connecting the first flange, a heat isolating layer and the second flange in turn. The heat isolating device of the invention can be adopted to effectively prevent the heat generated by the heater of a vacuum reaction chamber from being transmitted into the magnetic fluid device, thereby avoiding the damage to the magnetic fluid device caused by the overhigh working temperature. Besides, the dust particles generated near the space of the magnetic fluid device is pumped out by additionally arranging a vacuum pipeline, thus avoiding the wafers in the vacuum reaction chamber from being polluted.

The invention relates to a thermal production well annulus thermal insulation system which comprises a vacuum pump (1), a thermal insulation oil pipe (3), a high temperature and high pressure resistance packer (5) and a casing pipe (7). The thermal insulation oil pipe is in the middle of the inside of the casing pipe, the high temperature and high pressure resistance packer forms a closed oil jacket annulus between the thermal insulation oil pipe and the casing pipe, a thermal insulation coating (4) is arranged on the outer wall of the thermal insulation oil pipe, and the vacuum pump is used for vacuumizing the oil jacket annulus so that the thermal convection coefficient of the inside of the oil jacket annulus can be reduced. The invention further relates to a method for thermal production well annulus thermal insulation by means of the thermal insulation system. According to the thermal production well annulus thermal insulation system and method, heat loss of heat inside a shaft can be reduced, damage to the casing pipe is reduced, and the thermal recovery effect is improved. The thermal production well annulus thermal insulation system and method are applied to the technical field of heavy oil well column thermal fluid exploitation.

A radiant heat barrier insulation system includes a first substrate with a first layer of aluminum thereon. The system also includes a second substrate with a second layer of aluminum thereon. The first substrate is positioned to oppose the second substrate such that a gap is defined between the first substrate and the second substrate. The gap is filled with a randomly-oriented nest of carbon nanotube fibers.

The invention belongs to the field of aero-engine disc-shaft connection rotor system thermal effect analysis and thermal deformation measurement, and relates to a disc-shaft connection rotor system thermal analysis test bench and a thermal deformation measurement method. The test bench is mainly composed of an electric drive and control system, an ignition system, a heat insulation system, a nonlinear support-rotor system, a test sensing system and a base. The heating temperature of a disc-shaft connection rotor system can be accurately controlled by an igniter. By adjusting the gas valve of the igniter, the firepower of the igniter can be controlled, and the disc-shaft connection rotor system can be heated within different temperature ranges. The thermal deformation of a disc-shaft connection rotor system in an environment with uniform temperature distribution can be measured, and the thermal deformation in an environment with non-uniform temperature distribution and the thermal deformation under a variable speed condition can be measured.

A thermal insulation system includes an evacuated structure including an internal space in which a vacuum is sustained by a vacuum pump operating when it is determined that a pressure within the internal space has risen to a predetermined level. In one embodiment, such a system is used within a dome structure extending over and around a heat receiving structure within a solar heating system.

The invention discloses a roof greening and overhead photovoltaic cell panel combined heat insulation system, and relates to a roof heat insulation system. At present, both roof greening and erection of a photovoltaic cell panel are carried out independently, and a roof can only be subject to one of the both, thereby causing waste of roof space, insufficient resource utilization and non-ideal heat insulation effect. The roof greening and overhead photovoltaic cell panel combined heat insulation system is characterized by comprising a greening vegetable layer arranged on the roof and a photovoltaic cell panel group erected on the greening vegetable layer, wherein the cell panel group comprises a plurality of cell panels which are distributed at intervals to enable the greening vegetable layer to be irradiated by leak light, and a rain water collecting device is arranged among the cell panels and the greening vegetable layer. By simultaneously arranging the photovoltaic cell panels and the greening vegetable layer on the roof, the invention fully makes use of the roof space, enhances the heat insulation and heat preservation effects and simultaneously combines the advantages of the cell panels and the greening vegetable layer.

A thermal insulation system (100) can include a body of heated material (110) at an elevated temperature. A layer of porous insulating material (120) can be placed adjacent to and in fluid communication with the body of heated material (110). The insulating layer (120) can contain distributed liquid water in an amount sufficient to cool the insulating layer (120) through evaporative vapor flow toward the body of heated material (110). The amount of water can be sufficient to provide water vapor for inhibiting the diffusion and adsorption of hydrocarbons from the body of heated material (110). The insulating layer (120) can include a continuous vapor phase. A heat sink material (130) at a lower temperature can be placed adjacent to the insulating layer (120) and opposite from the body of heated material (110).

The invention discloses a heat insulation headlining and heat insulation system for a vehicle. The heat insulation system comprises sheet metal and the heat insulation headlining, and the heat insulation headlining comprises a substrate layer; a first reinforcement layer is arranged on the surface, close to the indoor side of the vehicle, of the substrate layer, and a second reinforcement layer isarranged on the surface, close to the outdoor side of the vehicle, of the substrate layer; the surface of the side, opposite to the substrate layer, of the second reinforcement layer is provided withan airtight aluminum-plated nonwoven fabric layer with a heat insulation function, and a fabric layer is arranged on the surface of the side, opposite to the substrate layer, of the first reinforcement layer; and an air layer is arranged between the sheet metal and the heat insulation headlining, and the sheet metal, the heat insulation headlining and the air layer form the airtight heat insulation system. The heat insulation system for the vehicle blocks heat outside the vehicle into the air layer between the headlining and the sheet metal, meanwhile, the aluminum-plated nonwoven fabric layer has the effect of blocking air, and thus the heat conducted into a passenger compartment is greatly reduced; and the heat insulation headlining and the heat insulation system have the advantages ofbeing simple in structure, easy to achieve and good in heat preservation and insulation effect.

The invention discloses a multi-channel high-efficiency pyrolysis device comprising five parts: a feed system, a pyrolysis system, a heat insulation system, a cooling system and a carbon discharging system. The device makes full use of a high-efficiency biomass pyrolysis way of a multi-channel pyrolysis reaction channel and a multi-channel cooling way, and a high-efficiency production way having high-efficiency pyrolysis and rapid cooling carried out simultaneously is formed; the device is beneficial to high-efficiency thermal conductivity and rapid cooling of biomass, increases the pyrolysis efficiency, facilitates carbon collection, reduces energy consumption, and improves the production efficiency.

Disclosed is a heat-insulation system for a liquefied natural gas cargo hold, which comprises a primary sealing wall, a secondary sealing wall, and a secondary heat-insulating layer, and is applied to a liquefied natural gas cargo hold. The heat-insulation system for a liquefied natural gas cargo hold comprises a collar stud installed on a line on the upper surface of the secondary heat-insulating layer where an anchor strip is installed.

An impact-sensing, thermal insulation system includes a light source; an optical detector; and an optically-transmissive insulation optically coupled with the light source and the optical detector, the optically-transmissive insulation being operably associated with an outer surface of a pressure vessel. A missile includes a body; a propulsion system including a pressure vessel having an outer surface; and an impact-sensing, thermal insulation system operably associated with the outer surface of the pressure vessel. The impact-sensing, thermal insulation system includes a light source; an optical detector; and an optically-transmissive insulation optically coupled with the light source and the optical detector, the optically-transmissive insulation being operably associated with the outer surface of the pressure vessel.

The invention provides an efficient geothermal heat utilization system and method based on solid heat conduction. The system comprises a heat transfer well, an underground heat collection section, a ground heat exchange device and a solid heat transfer rod, wherein the heat transfer well is arranged in a stratum layer, the upper end of the heat transfer well extends upwards to the ground, the lower end of the heat transfer well extends downwards into a geothermal storage layer, the underground heat collection section is formed in the portion, located in the geothermal storage layer, of the heat transfer well so as to collect geothermal energy in the geothermal storage layer; and the ground heat exchange device is arranged on the ground, the solid heat transfer rod is arranged in the heat transfer well, one end of the solid heat transfer rod is connected with the ground heat exchange device, the other end of the solid heat transfer rod extends downwards to the underground heat collection section, and heat energy in the geothermal energy storage layer collected by the underground heat collection section is conducted into the ground heat exchange device. According to the efficient geothermal heat utilization system based on solid heat conduction and a utilization method thereof, solid medium is used for realizing geothermal transmission, and the core components including a solid heat transfer rod system and a related heat collection and insulation system have the advantages of being efficient, environment-friendly, wide in application range and the like.

The invention provides a low-temperature grain depot heat insulation system and a construction method thereof. The system comprises a bin wall outside heat insulation system, a bin wall (3) and a bin wall inside heat insulation system. The bin wall outside heat insulation system is formed by forming a plastering layer (2) on the outer side of the bin wall (3) and coating a heat reflection coating facing layer (1) on the outer side of the plastering layer (2), the bin wall inside heat insulation system is composed of a steam isolating layer (4), a fixing member (5), a heat insulation layer (9) and a plaster protection layer (10), the steam isolating layer (4) is arranged between the heat insulation layer (9) and the bin wall (3), the fixing member (5) capable of bearing pressure is adopted to fix the heat insulation layer (9) and the steam isolating layer (4) on the bin wall (3), and the plaster protection layer (10) is plastered on the outer side of the heat insulation layer (9). The invention further provides a construction method of the low-temperature grain depot heat insulation system. The low-temperature grain depot heat insulation system has heat insulation effect, has performance of resisting lateral pressure, is longer in service life and can be widely applied to wall heat insulation of a house type bin of a concrete structure or a building body structure.