28results about How to "Avoid heat transfer" patented technology

The invention belongs to the technical field of high polymer materials. The invention relates to the field of plastics, in particular to polypropylene modified plastic and a preparation method thereof. The product provided by the invention comprises the following raw materials in parts by weight: 100-110 parts of polypropylene resin, 20-22 parts of an organophosphorus flame retardant, 10-12 parts of hollow spherical calcium carbonate particles, 0.8-1.2 parts of an antioxidant and 0.2-0.3 part of a plasticizer. Wherein the sphericity degree of the hollow spherical calcium carbonate is 8.5 to 9.0; in addition, the D50 of the hollow spherical calcium carbonate is 45-60 [mu] m. When the hollow spherical calcium titanate is prepared, sodium carbonate, calcium chloride and an emulsifier solution are rapidly stirred to react, centrifugal separation is performed, and then washing, drying, calcining, cooling and screening are performed to obtain the hollow spherical calcium titanate. On the basis of reducing the migration of the flame retardant, the product provided by the invention can reduce the adverse effect of the filler on the flame-retardant effect.

The invention provides a heat insulation element and a battery, the heat insulation element comprises a heat insulation layer, the heat insulation layer comprises chopped fibers and heat insulation powder, the thickness of the heat insulation layer is less than or equal to 10mm, the heat conductivity coefficient of the heat insulation layer at 25 DEG C is less than or equal to 0.04 W / (m.K), and the heat conductivity coefficient of the heat insulation layer at 500 DEG C is less than or equal to 0.06 W / (m.K). The heat insulation element can prevent heat transfer between the battery monomers or heat transfer from the battery monomers to the battery shell under a low-temperature condition, and can prevent the battery monomers from transferring heat to the adjacent battery monomers or the battery shell when the battery monomers have a battery swelling stage or a thermal runaway stage, so that the spreading of the thermal runaway of the battery is effectively delayed.

The utility model discloses a high-temperature-resistant ceramic bearing, particularly relates to the technical field of bearings, and provides the following scheme aiming at the problems that an existing bearing needs to conveniently block sundries and effectively reduce the internal temperature: the high-temperature-resistant ceramic bearing comprises an outer ring, an inner ring and balls, a plurality of balls are arranged between the outer wall of the inner ring and the inner wall of the outer ring in a surrounding mode, and blocking rings are arranged on the two sides of the balls in an attached mode. Annular grooves are formed in the two side edges of the interior of an outer ring used for connection, and cooling pipes are arranged on the two sides of the interior of the outer ring in a penetrating mode. The two sides of the balls used for rotating are in rolling fit connection with the blocking rings, rolling grooves are formed in the sides, close to the balls, of the inner wall of the outer ring and the outer wall of the inner ring correspondingly, and containing grooves are formed in the centers of the rolling grooves correspondingly. The structure has the advantages of being capable of effectively preventing sundries and dust from entering, effectively cooling the structure and blocking hot air.

The utility model provides a heat preservation structure. The heat preservation structure comprises a fan body assembly and a frame. The frame comprises a frame body and a heat insulation assembly arranged in the frame body, and the heat insulation assembly comprises a first sectional material, a compensation piece and a second sectional material which are sequentially connected. The fan body assembly is arranged on the frame body; the heat insulation assembly is arranged in the length direction of the frame body. The first profile is located indoors, and the second profile is located outdoors. The utility model solves the problem that the heat insulation performance of the door and window is reduced because part of the section bar of the traditional door and window is directly communicated with the indoor and outdoor.

A battery pack according to the present application includes: a cell array structure having a plurality of battery cells; and a battery pack case having an accommodation space for accommodating the cell array structure and having a bottom plate provided below the cell array structure, wherein the cell array structure has a base member containing a foamed material, having a predetermined volume, and covering and supporting a lower portion of the cell array structure, and the base member is spaced apart from the bottom plate in at least a partial region to form an exhaust space.

The utility model discloses a middle-shallow geothermal energy buried pipe mounting structure, which belongs to the technical field of buried pipes and comprises a supporting seat, a bottom plate is fixedly connected below the supporting seat, and an adjusting device is mounted in the supporting seat. According to the utility model, the adjusting device is arranged in the supporting seat and comprises the first threaded rod, the nut and the adjusting hole, so that an operator can rotate the first threaded rod in the mounting process to enable the first threaded rod to move up and down in the adjusting hole so as to drive the whole supporting seat to lift, thereby realizing accurate control on the mounting height of the buried pipe; the nut is fixedly connected to the upper surface of the supporting base, it is ensured that the structure is stable and reliable in the adjusting process, in actual construction, the adjusting mechanism can be flexibly adjusted according to the ground gradient or the concave-convex condition of a foundation, it is ensured that all buried pipes are located at the same elevation position, and uneven heat transfer or buried pipe damage caused by different buried depths is avoided; the system effectively adapts to complex and changeable terrain environments, and the system operation stability is improved.

The frying and baking machine comprises an upper baking tray assembly, the upper baking tray assembly comprises a cover body and a heating pipe installed in the cover body, the cover body is provided with an installation cavity and a containing cavity protruding relative to the installation cavity, the containing cavity communicates with the installation cavity, and the heating pipe comprises a heating section and a connecting section connected with the heating section; the heating section is arranged in the mounting cavity, one end of the heating section is bent upwards and extends into the accommodating cavity, so that the connecting section is arranged in the accommodating cavity, and the connecting section and the heating section are arranged on different planes. According to the frying and baking machine, the connecting section and the heating section can be separately arranged on different planes by optimizing the form of the heating pipe and arranging the mounting cavity and the accommodating cavity which are distributed at different heights, so that the high temperature of the heating section can be prevented from being transmitted to the connecting section, and the exposure of a heating element in the heating pipe caused by the melting of glue near the connecting section can be prevented; the safety risk is reduced, heat loss can be avoided, and therefore the heating efficiency of the heating pipe is ensured.

The utility model provides a battery pack, which mainly solves the problem that potential safety hazards are generated after thermal runaway smoke in the existing battery pack is exhausted. The battery pack comprises a box body and a battery module, an inner cavity of the box body is divided into a battery bin and an isolation bin through a partition plate. First isolation liquid is arranged in the battery compartment, and the battery module is arranged in the first isolation liquid; second isolation liquid is arranged in the isolation bin; when the battery module in the battery compartment is subjected to thermal runaway, the first isolation liquid prevents thermal runaway flue gas in the battery compartment from influencing the single batteries which are not subjected to thermal runaway, and meanwhile, the first isolation liquid enters the thermal runaway single batteries to prevent the thermal runaway single batteries from continuously generating thermal runaway; the thermal runaway flue gas in the battery bin enters the isolation bin through the flue gas channel, and the second isolation liquid cools the thermal runaway flue gas, so that the discharged thermal runaway flue gas is not easy to burn, and the safety of the battery pack during use is improved.

The present invention relates to the technical field of material modification, and specifically to flame-retardant, high-strength and tough modified nanocellulose and a preparation method thereof, and flame-retardant, strong and tough balanced polyolefin; the preparation of flame-retardant, high-strength and tough modified nanocellulose comprises the following steps: (1) a hydrophobic agent is grafted onto the surface of nanocellulose to obtain hydrophobic nanocellulose, wherein the hydrophobic agent is a silane having at least one amino functional group; (2) the hydrophobic nanocellulose and a hydroxyl-containing diallyl ether compound are subjected to a heating reaction under the action of a diisocyanate to obtain flame-retardant, high-strength and tough modified nanocellulose; the invention also relates to flame-retardant, strong and tough balanced polyolefin comprising the flame-retardant, high-strength and tough modified nanocellulose. The modified nanocellulose of the present invention is added to polyolefin to increase its interfacial compatibility with the polyolefin material, which is beneficial to improving the strength, toughness, flame retardancy and heat resistance of the composite material.

The invention discloses an injection molding machine and a cooling module thereof, and relates to the technical field of injection molding machine cooling equipment.The injection molding machine comprises an injection molding machine body, a product adjusting block, a cooling water pond, a product shaping block and adjusting supporting feet, the product adjusting block is installed at the outlet end of the injection molding machine body, and the cooling water pond is installed on the side, away from the injection molding machine body, of the product adjusting block; a product shaping block is arranged on one side, close to the product adjusting block, of the inner side of the cooling water tank, and a plurality of groups of adjusting supporting legs are arranged at the bottom ends of the injection molding machine body, the product adjusting block and the cooling water tank. According to the injection molding machine and the cooling module thereof, the horizontal positions among the injection molding machine body, the product adjusting block and the product shaping block are guaranteed, so that a product is prevented from being deformed due to external influence, and meanwhile, the outlet of the injection molding machine, the product adjusting block and the product shaping block are guaranteed to be in a horizontal state; and the bending deformation of the uncooled product due to the gravity of the product is also avoided.

The utility model discloses a diesel engine exhaust system heat shield, which relates to the technical field of diesel engine systems, and comprises a first heat shield and a second heat shield, and a diesel engine exhaust system comprises an exhaust manifold, a supercharger and an oxidation catalyst, the first heat shield is used for wrapping the front portion of the exhaust manifold and can form a cavity with the outer surface of the wrapping range of the first heat shield, and the second heat shield is used for wrapping the rear portion of the exhaust manifold, the supercharger and the oxidation catalyst and can form a cavity with the outer surface of the wrapping range of the second heat shield. The utility model has the advantages that the wrapping range is enlarged, the heat insulation effect can be greatly improved by the cavity, the stress concentration is reduced, the reliability is improved, and the assembly is convenient.

The present invention discloses a polyester composite, which includes polyester, carbon dots and flame retardant. The addition of carbon dots can not only improve the flame retardancy of polyester, but also give the polyester composite fluorescent properties, so that it has the potential to prepare flame retardant fibers and fluorescent anti-counterfeiting fibers at the same time. The carbon dots act as crosslinking points when the polymerization system burns, which increases the amount of residual carbon in the system, reduces the rate of thermal weight loss, effectively inhibits heat transfer and improves the flame retardancy. The present invention adopts in-situ polymerization or blending to add carbon dots and flame retardant to polyester. Since the carbon dots are highly compatible with polyester, it is beneficial to improve the mechanical properties of polyester, and has both flame retardancy and fluorescence, providing a new development idea for polymer flame retardancy and enhanced modification.

The utility model belongs to the technical field of electromagnetic shielding, and particularly relates to an electromagnetic shielding door which comprises a shielding door frame, a shielding door leaf and an electromagnetic shielding effectiveness monitor. The electromagnetic shielding effectiveness monitor comprises a transmitting device and a receiving device, the transmitting device is embedded in the inner side of a shielding door leaf, the receiving device is embedded in the outer side of the shielding door leaf, and a clamping frame connected with the transmitting device and the receiving device is fixed in the shielding door leaf. The transmitting device and the receiving device are fixedly connected with the corresponding clamping frames through first bolts respectively; the outer end of the transmitting device and the outer end of the receiving device are each provided with a sealing strip sealed with a door leaf of the shielding door. The shielding effectiveness of the electromagnetic shielding door can be monitored online in real time, so that the shielding door can be rectified or replaced in time when the shielding effectiveness of the shielding door is reduced, and electromagnetic leakage of sensitive information in a machine room is avoided.

The utility model provides an end plate assembly for a battery module, the battery module and a power battery. The end plate assembly for the battery module is used for covering one end of a battery cell structure, and comprises a metal piece, an end plate and a connecting piece, the plastic part is connected with the metal part; wherein the metal piece or the plastic piece is provided with two connecting ends which can be electrically connected with the positive electrode output end and the negative electrode output end of the battery cell structure respectively. According to the technical scheme, the combination of the metal piece and the plastic piece is adopted, the weight is low, heat preservation materials do not need to be arranged, and cost is reduced.

This application relates to a vertical superconducting transient heat transfer continuous oil refining equipment, belonging to the field of pyrolysis equipment. It includes a reaction unit, a heating unit, and a condensation unit. The reaction unit includes a base and a reaction cylinder. The base is fixed to a mounting surface, and the reaction cylinder is mounted on the base. The central axis of the reaction cylinder is vertical. The inner cylinder has a reaction chamber for pyrolyzing tire rubber powder. An inlet and a steam outlet are located at the top of the inner cylinder, and a slag outlet is located at the bottom. An insulation cylinder surrounds the outer part of the inner cylinder. The heating unit includes a superconducting heat pipe and a heat source. The superconducting heat pipe is vertically positioned at the center of the reaction chamber, and contains a superconducting heat transfer medium. The heat source heats the evaporation end of the superconducting heat pipe. The condensation unit has an inlet connected to a steam outlet and is used to condense the pyrolysis oil gas flowing out of the steam outlet. The continuous oil refining equipment of this application features fast heat transfer, high efficiency, uniform furnace temperature, low power consumption, and no material blockage.

The utility model discloses a conveyor belt cooling structure and relates to the technical field of conveyor belts. The device comprises a bottom box, one side of the bottom box is provided with a motor, one side of the inner wall of the bottom box is rotatably matched with a bidirectional lead screw fixedly connected with the output end of the motor, and the bidirectional lead screw is in threaded fit with two mounting plates in sliding fit with the bottom box. By arranging the cooling mechanism, when the conveying roller is used, cooling water can be introduced, heat exchange can be conducted on a cooling agent, then materials on the surface of the conveying roller are cooled through the cooling agent, and the situation that the quality of the materials is reduced due to heat transfer when the connecting belt makes contact with the conveying roller is prevented; when the motor drives the two-way lead screw to drive the mounting plate to move towards the two sides, the connecting base and the conveying roller can be separated, under the action of the driving plate, the arc-shaped supporting plate supports the conveying roller, the conveying roller can be disassembled conveniently, and the disassembling efficiency of the conveying roller is improved.

The utility model relates to the technical field of silicate plates and provides a silicate plate which comprises a salt plate body, the front face of the salt plate body is fixedly connected with a connecting plate, the front face of the connecting plate is fixedly connected with a sound insulation plate, the front face of the sound insulation plate is fixedly connected with a supporting layer, and the front face of the supporting layer is fixedly connected with a high-temperature-resistant layer. An impact-resistant elastic layer is fixedly connected to the front face of the high-temperature-resistant layer, a fireproof base layer is fixedly connected to the front face of the impact-resistant elastic layer, a water-resisting layer is fixedly connected to the front face of the fireproof base layer, and a drainage groove is formed in the front face of the water-resisting layer; meanwhile, the connecting plate, the sound insulation plate, the supporting layer, the high-temperature-resistant layer, the impact-resistant elastic layer and the fireproof base layer are all located in the fixing shell. By means of the technical scheme, the problems that in the prior art, a traditional silicate plate is single in structure and poor in sound insulation performance and does not have the fireproof function and the anti-striking function are solved.

The application discloses a polyurethane passive entry door with security monitoring function, and particularly relates to the technical field of passive doors, which comprises a door frame, two door leaves hinged to the door frame and symmetrically distributed, one of the door leaves is provided with a monitoring part for real-time monitoring of the front of the door frame, a sealing strip is arranged between the door frame and the door leaves, the door frame and the door leaves are both filled with polyurethane material, an axis and a clamping block are respectively arranged on the two door leaves, a shell is rotatably connected to the axis, a wedge-shaped booster block is slidably connected in the shell, a driving mechanism is arranged on the axis for driving the shell to rotate and the booster block to move, and the driving mechanism drives the shell to rotate first and then drives the booster block to move when the driving mechanism operates. The application reduces the self-weight of the door under the premise of ensuring the strength, improves the safety of the family through the monitoring part, and improves the heat preservation and waterproof effects when the door leaves are closed through the sealing strip and the driving mechanism.

This utility model discloses an energy-saving skylight made of glass fiber polyurethane composite material, comprising an inner frame integrally molded from glass fiber polyurethane composite material; a first cavity and a second cavity distributed vertically within the inner frame; a ring of raised ribs on the inner side wall of the first cavity; a ring of lower support portions on the outer side wall of the inner frame; a ring of sealing support portions on the inner edge of the top surface of the inner frame, the top surface of which has a first sealing strip mounting groove; a ring of first locking grooves on the top surface of the inner frame located on the outer periphery of the sealing support portions; and a ring of fixing mounting portions at the bottom of the outer periphery of the inner frame, the bottom of which slopes from top to bottom towards the outer side of the inner frame to form a bevel. This energy-saving skylight, using glass fiber polyurethane composite material as the inner frame, effectively blocks heat conduction between indoors and outdoors, ensuring a suitable indoor temperature and achieving good energy-saving performance.

The invention relates to the technical field of medical instruments, and discloses a brain pacemaker wireless charging device which comprises a pulse generator, a connector is arranged at the top of the pulse generator, an extension line is fixedly connected to the connector, and a deep electrode is arranged at the end, away from the connector, of the extension line. A control circuit board and a storage battery are arranged in the pulse generator, a mounting cavity is formed in the middle of the pulse generator, and a temperature difference power generation mechanism capable of generating power through temperature difference is arranged in the mounting cavity. According to the wireless charging device for the brain pacemaker, due to the fact that the temperature difference exists when the temperature in a human body gradually decreases from the body nucleus to the body surface, a thermoelectric power generation mechanism is integrated in the middle of a pulse generator, and a P-type thermoelectric leg and an N-type thermoelectric leg in the thermoelectric power generation mechanism are connected in series through an electrode plate to form a thermoelectric power generation unit; therefore, the temperature difference inside and outside the human body is utilized to generate power for the pulse generator, and frequent charging operation is not needed.

The utility model discloses a heat shield pot support device and a stove burner comprising the same, the heat shield pot support device comprises a heat shield and a pot support, the heat shield comprises a heat shield body and a connecting part, the pot support is provided with a guide part, the connecting part is connected to the bottom of the heat shield body, and the guide part is connected to the bottom of the heat shield body. And the connecting part is connected to the guide part and can move on the guide part. The stove burner comprises the heat shield pot support device. The guide component is arranged on the pot support, and the connecting component on the heat shield can freely slide within a certain range along the guide component, so that the position of the heat shield can be adjusted according to actual use requirements, and a better effect of blocking radiation heat of a heat source is achieved.

The invention discloses a preparation technology of a hematite-containing polyethylene flame-retardant mute material for pipes, and relates to the technical field of drainage pipe materials, the preparation technology comprises the following steps: 1, grinding 60-80g of hematite, sieving with a 600-1250 mesh sieve, and carrying out pretreatment; 2, the pretreated hematite, 5-8 g of a flame retardant, 0.2-1 g of an external lubricant, 0.3-1 g of an internal lubricant and 25-35 g of high-density polyethylene are added into an internal mixer, heating and internal mixing are conducted to 190-195 DEG C, then the mixture is poured into a feeding hopper of a single-screw extruder, extrusion granulation is conducted through the single-screw extruder, and the temperature of the extruder is 140-170 DEG C. According to the preparation process of the hematite-containing polyethylene flame-retardant mute material for the pipe, nano carbon black is modified, and nano carbon black and sulfonate play a synergistic flame-retardant role in a condensed phase and can promote a matrix to form a compact carbon layer, so that a very good barrier effect is achieved.

The present invention relates to the technical field of medical devices, and discloses a brain pacemaker wireless charging device, including a pulse generator, a connector is arranged on the top of the pulse generator, and an extension line is fixedly connected to the connector, a deep electrode is arranged at one end of the extension line away from the connector, a control circuit board and a storage battery are arranged inside the pulse generator, and an installation cavity is opened in the middle of the pulse generator, and a temperature difference power generation mechanism capable of generating electricity through temperature difference is arranged in the installation cavity. The brain pacemaker wireless charging device, because the temperature in the human body gradually decreases from the body core to the body surface, there is a temperature difference, and the temperature difference power generation mechanism is integrated in the middle of the pulse generator, and the P-type thermoelectric legs and the N-type thermoelectric legs in the temperature difference power generation mechanism are connected in series through electrode sheets to form a temperature difference power generation unit, thereby utilizing the temperature difference between the inside and outside of the human body to generate electricity for the pulse generator, and no frequent charging operation is required.

This utility model discloses a thermally insulated and vibration-damping enclosure for an optical feedback cavity enhanced Raman spectroscopy detection instrument, belonging to the field of thermally insulated enclosure technology. It includes an insulation layer inside the main body of the outer shell, a reflective fiber optic coupler inserted into the right side of the main body through an optical path through-hole, and a temperature control component connected to the main body. This utility model uses a simple-structured main body made of high-strength aluminum alloy, with anodized and painted surfaces to improve corrosion resistance. The insulation layer ensures the system maintains internal temperature stability even when external ambient temperatures fluctuate. The temperature control component effectively diffuses the thermal gradient generated by the TEC (Electrical Temperature Coefficient) throughout the entire internal space of the enclosure through forced convection heat transfer, thereby minimizing local temperature differences and achieving a consistent internal temperature field. This maintains stable internal temperature, improves measurement accuracy, and enhances the long-term stability of the laser frequency and the robustness of Raman spectroscopy measurements.

This invention discloses a centralized control method and system for hot gas defrosting. Through data acquisition, frost layer prediction and triggering, defrosting execution, and optimization feedback steps, it achieves intelligent and precise control of the defrosting process. The system includes a sensor group, an edge data acquisition module, a local controller, a communication module, a cloud-based centralized control platform, and actuators. This invention employs a fusion prediction model, combining rule-based rapid scoring with machine learning-based accurate prediction to dynamically assess frost risk and trigger defrosting, avoiding the blindness of traditional timed defrosting. Simultaneously, it ensures system stability through grouped sequential control and safety monitoring, and utilizes a cloud platform to aggregate multi-site data for global optimization scheduling and model iteration. This invention effectively reduces defrosting energy consumption, maintains stable storage / cabinet temperatures, and improves the operating efficiency and intelligent management level of the refrigeration system.

The invention relates to the technical field of wire harness welding, and discloses a wire harness welding intelligent robot and a using method thereof.The wire harness welding intelligent robot comprises a welding table and a welding robot, two electric telescopic rods are fixedly connected to the top of the welding table, two clamping blocks are arranged at the top of the welding table, the electric telescopic rods are started to stretch out, the clamping blocks are pushed to move, and the welding table is connected with the welding robot; spring connecting rods are driven to move, the two spring connecting rods extrude each other, a sliding ring is driven to move, negative pressure is generated on the side, close to a fixed arc-shaped block, of the sliding ring, two pushing plates extrude each other along with continuous movement of a clamping block, and the pushing plates push the sliding arc-shaped block to slide in the clamping block; when the wire harness is clamped, a communicating groove in the fixed arc-shaped block is communicated with a communicating groove in the sliding arc-shaped block, and negative pressure is transmitted into the suction cup, so that the suction cup adsorbs the wire harness, uniform adsorption force is provided, the wire harness is effectively prevented from being subjected to overlarge extrusion force in the clamping process, and the situation that the position of a wire is affected due to dislocation of the wire in the wire harness is avoided.

This invention discloses a light-emitting structure for a hair removal device and the device itself. The light-emitting structure includes a light source assembly, a cooling assembly, and a heat-insulating sealing structure disposed between the light source assembly and the cooling assembly. The heat-insulating sealing structure includes a heat-insulating film and a corrugated sealing ring. The first end of the corrugated sealing ring is nested on the cooling assembly. The second end of the corrugated sealing ring is used to tightly adhere the heat-insulating film to the light-emitting surface of the light source assembly, preventing impurities from falling onto the light-emitting surface and preventing heat transfer between the light source assembly and the cooling assembly. This reduces the entry of dirt and debris, reduces heat transfer between the light source assembly and the cooling assembly, reduces condensation, improves the cooling effect of the cooling assembly during light emission, and extends the device's lifespan.

The present invention relates to a battery module, which is intended to prevent heat transfer between single-cell module assemblies in the battery module. The battery module includes a plurality of single-cell module assemblies and a module plate, wherein the single-cell module assembly includes a plurality of battery cells and a separate housing for accommodating the plurality of battery cells. The separate housing includes: an upper plate / lower plate, the upper plate / lower plate being located at the upper and lower parts, rather than at the front and rear parts where the electrode leads of the plurality of battery cells protrude; and two side plates, the two side plates being located at both sides of the plurality of battery cells to connect the upper plate / lower plate. A pair of module plates are respectively located at the front and rear parts where the electrode leads of the plurality of single-cell module assemblies protrude, and are large enough to cover the entire front and rear parts, respectively, and are fastened to the plurality of single-cell module assemblies.