11results about How to "Avoid heat loss" patented technology

The invention discloses a processing method of a grenade warhead, belongs to the technical field of machining, and solves the technical problems that the outline is limited, materials are wasted and a die is easy to scrap when the grenade warhead is stamped by a traditional integrated cylindrical lower die. The stamping die comprises an upper die and a lower die, the lower die comprises a left die block and a right die block which are split in half along the axis, and a die cavity matched with the outer contour of a target grenade warhead is formed after the left die block and the right die block are closed. According to the invention, the punching processing of complex contour products with equal diameters, large lower parts and small upper parts in one die cavity can be realized by twice punching and hole forming, so that the heat loss caused by die cavity replacement is avoided, the contact time length of the punch and a blank is reduced, the punch is prevented from being quenched and tempered, the subsequent machining amount is also greatly reduced, and the processing procedure is simplified; and meanwhile, the detachable lower mold is convenient to repair, the mold cavity can be remanufactured through machining, the upper mold can be repaired through the cladding welding technology, and then repeated repair and utilization of the mold are achieved.

The utility model discloses an induction heating type chip welding device, and relates to the technical field of chip welding. The device comprises a tool jig, wherein the tool jig is fixedly connected with a supporting rod for placing a chip through a placing cavity formed in the tool jig; the welding part comprises two hot-pressing seats, the two hot-pressing seats are symmetrically distributed by taking the tool jig as a center, one end, close to the tool jig, of each hot-pressing seat is fixedly connected with a heat conduction block, and a heat insulation plate is fixedly mounted on the outer surface of each hot-pressing seat. The utility model can effectively solve the problems in the prior art that no definite time sequence control exists in the heating and pressure applying process, the heating block starts to dissipate heat when approaching the chip, so that the welding flux is melted in advance when the pressure is not applied, the welding flux is oxidized, sheetted or bridged, and if the pressure is firstly applied and then the heating is performed, the welding flux cannot be heated. And the problem that the chip packaging material is deformed due to overlong pressure duration time is solved.

The invention belongs to the technical field of superconducting motors, and discloses a superconducting motor rotor cooling mechanism, which comprises a superconducting magnet, an iron core, a torque support frame, a Dewar unit and a cooling pipeline assembly, and is characterized in that the Dewar unit comprises a shaft system and an outer Dewar structure, and the outer Dewar structure is provided with an accommodating cavity; the superconducting magnet, the iron core, the torque support frame and the shaft system are sequentially in key connection from outside to inside, the shaft system penetrates through the outer Dewar structure and forms a closed space with the outer Dewar structure, and the superconducting magnet, the iron core and the torque support frame are all arranged in a containing cavity of the outer Dewar structure; the cooling pipeline assembly is arranged in the closed space and used for cooling the superconducting magnet, the iron core and the torque supporting frame. According to the superconducting motor rotor cooling mechanism provided by the invention, the low-temperature stability can be ensured, the structural design of a rotating machine is simplified, and the risk of heat leakage is reduced.

The invention relates to the technical field of aero-engines, in particular to an integrated pre-cooling device. Comprising a pre-cooling mechanism, a heat dissipation mechanism and an electromagnetic driving mechanism, the pre-cooling mechanism comprises a fluid channel and a first heat exchange channel, first fluid can circulate in the fluid channel, and second fluid can circulate in the first heat exchange channel; the heat dissipation mechanism comprises a heat dissipation inner cavity and a second heat exchange channel, third fluid can circulate in the heat dissipation inner cavity, and the first heat exchange channel communicates with the second heat exchange channel; the electromagnetic driving mechanism comprises an electric driving assembly and a magnetic driving assembly, the electric driving assembly can conduct current in the second fluid, the magnetic driving assembly is used for generating a magnetic field perpendicular to the second heat exchange channel, and the current and the magnetic field interact to drive the second fluid to flow; the second fluid and the third fluid can exchange heat, and the second fluid can continuously exchange heat with the first fluid. Therefore, the second fluid is directly driven to circulate, the reuse of heat exchange and pumping functions is realized, and reliable circulating driving of large-flow liquid metal in a limited space is guaranteed.

This utility model relates to the field of furnace tube processing technology, and in particular to a high-efficiency bending equipment for industrial furnace tubes. It includes a processing table with a support plate fixedly connected to its center. The outer wall of the support plate has an installation groove, within which a support rod is installed. The support rod extends to the outside of the processing table and is connected to a bending mold. The outer wall of the bending mold has a circular groove, within which a furnace tube is clamped. This equipment achieves "heating and bending simultaneously" by embedding a heating coil within the bending mold and directly heating the area of ​​the furnace tube to be bent in real time via a high-frequency power supply box. This avoids heat loss during the transfer process. The heating coil directly transfers heat to the furnace tube through heat-conducting holes, and the temperature sensor provides real-time feedback, improving heating efficiency. For traditional natural cooling methods that result in insufficient hardness in the bent section of heat-resistant steel furnace tubes, and the risk of cracking from direct water cooling, this equipment avoids cracking by spraying coolant through atomizing nozzles, thus reducing the scrap rate.

The application discloses a carbon nanotube preparation method and a carbon nanotube preparation device. The carbon nanotube preparation method comprises the following steps: passing carrier gas: the carrier gas is passed into a growth bin; passing reactants: when the carrier gas is passed, the carbon source and the catalyst are passed into the growth bin to generate the carbon nanotube; and preheating the carrier gas: before the carrier gas is passed, at least part of the carrier gas is heated to keep the temperature of the central region of the growth bin at a preset temperature after the carrier gas is passed, so as to match the growth temperature of the carbon nanotube. The carrier gas preheated as the main heat source is directly supplied to the center of the growth bin, the heat efficiency is high, the energy consumption is low, the carbon deposition and shutdown are reduced; and the reactants are uniformly introduced into the center and fully mixed with the carrier gas, the temperature field is uniform, the radial temperature difference is small, the quality and yield of the carbon nanotube are improved, and the high-quality and low-cost large-scale preparation is realized.

The present application belongs to the technical field of waste heat recovery and air purification, and discloses an intelligent heat recovery air conditioning fresh air machine. The machine body shell is internally formed with a heat exchange area and a cleaning area separated by a baffle. The flue gas pipeline heat exchange device includes double-row flue gas pipelines in the heat exchange area, spiral fins on the outer wall of the double-row flue gas pipelines, and an air blower. The double-row flue gas pipelines include upper and lower pipelines connected through the cleaning area to form a U-shaped flue. The ash removal device includes an openable access door and a steel brush that can be inserted into the pipeline to remove ash. The fresh air introduction device includes an air blower and a fresh air purification module, which is used to introduce outdoor air after heat exchange and purification into the room. The waste gas purification device and the intelligent constant temperature control device include a PLC controller and a temperature sensor, which are used to automatically adjust the speed of the air blower to maintain a constant temperature according to the indoor temperature. The present application solves the problem of difficult cleaning of ash accumulation in the flue of the existing equipment, and has the functions of efficient heat exchange, convenient maintenance, deep purification, and intelligent control.

The application relates to the technical field of photovoltaic panel connecting equipment, and provides a photovoltaic panel junction box, which comprises a first junction box and second junction boxes located on the two sides of the first junction box, a first connecting assembly and at least one group of second connecting assemblies are arranged in the first junction box, the second junction box is matched with the first connecting assembly, the first connecting assembly comprises a first diode and a first metal sheet connected to the two sides of the first diode; the second connecting assembly comprises a second diode and a second metal sheet connected to the two sides of the second diode, the second metal sheet is respectively connected with a power line, the first junction box is provided with a mounting cavity, and a control assembly is mounted in the mounting cavity. Based on this, the connecting requirement of the dual-power solar panel can be met, and the problems of heat generation and power loss can be avoided.

The invention provides an integrated double-side coating infrared drying heat pump combined supply system which comprises a drying oven system used for drying a lithium battery pole piece base material, a first air nozzle mechanism and a second air nozzle mechanism are arranged in the drying oven system, and a heat pump system matched with the first air nozzle mechanism and the second air nozzle mechanism is arranged in the drying oven system. And the infrared heating assembly is used for heating the waste gas. The drying oven system is provided with an exhaust port, waste gas exhausted by the exhaust port is exhausted by an exhaust fan after being cooled by the heat pump circulating system through an air pipe, and the lithium battery coating base material drying device has the advantages of being capable of effectively improving the energy utilization rate and protecting the lithium battery coating base material, low in energy consumption and the like, and has great economic value and social value.

A thermoelectric module according to one embodiment of the present application includes a heat exchange unit and a thermoelectric element provided on the heat exchange unit, wherein the heat exchange unit includes a case for accommodating a material for heat exchange and a cover covering the case, the thermoelectric element is provided on the cover, and the thermal conductivity of the cover is higher than the thermal conductivity of the case.

The invention discloses a magnetic bead mixing device for a magnetic control droplet microfluidic system, and relates to the technical field of microfluidics. The device comprises a magnetic control unit and a mechanical motion unit, the magnetic control unit comprises a magnet and a control mechanism which are arranged outside the system, and the mechanical motion unit comprises a mechanism for driving the chip bearing platform to vibrate. The two units work cooperatively, and efficient and uniform mixing of the magnetic beads in a closed cavity of the chip is achieved through the combined action of a magnetic field and mechanical vibration. The magnetic control unit controls magnetic field change, and the mechanical unit preset frequency drives vibration. Through a nonlinear synergistic mechanism, the problem of low uniform mixing efficiency in a laminar environment in a droplet microfluidic system is solved, and the device is simple in structure, easy to integrate and suitable for immunodetection, nucleic acid detection and other scenes needing magnetic bead uniform mixing, and the detection accuracy and the system reliability are improved.