79results about How to "Realize heat dissipation and cooling" patented technology

The invention discloses a water-cooling motor case, and the motor case comprises a case body, wherein the case body is provided with a cooling water inlet, a cooling water outlet and a heat exchange water channel connected with the cooling water inlet and the cooling water outlet. The cooling water inlet is arranged on one end of the case body, and the cooling water outlet is disposed on the otherend of the case body. The heat exchange water channel includes a first water channel and a second water channel, and the cooling water inlet is connected with a water inlet of the first water channeland a water inlet of the second water channel. The cooling water outlet is connected with a water outlet of the first water channel and a water outlet of the second water channel. The first water channel and the second water channel are bent along the outer side wall of the case body, and the first water channel and the second water channel are symmetric relative to center of the case and distributed on the outer side wall of the case body. According to the invention, the cooling water channel of the motor case can be effectively optimized, thereby effectively improving the heat dissipation efficiency, and improving the overall performance of a motor. The invention also provides a motor.

The invention relates to high-stability projection equipment with a heat dissipation function. The projection equipment comprises a host, a lens and a base, and further comprises a heat dissipation mechanism and a stabilizing mechanism. The heat dissipation mechanism comprises a circulating pump, a connecting pipe, a heat dissipation pipe, a water tank, a circulating pipe, a rotating assembly, twofirst filter screens and two heat dissipation assemblies. The stabilizing mechanism comprises a connecting box, a sealing plate, a driving assembly, a dust removing assembly, two limiting assembliesand two stabilizing assemblies. Each stabilizing assembly comprises a suction cup and an air inlet pipe. According to the high-stability projection equipment with a heat dissipation function, throughthe stabilizing mechanism, the equipment can be fixed, the projector is prevented from being damaged by accidental touch and fall-off, and the safety is improved; and through the heat dissipation mechanism, heat dissipation and cooling of the interior of the host are realized, and the situation that normal work of electronic elements in the host is affected due to the fact that the temperature inthe host is too high is avoided.

The invention discloses an anti-overheating garbage placing device. The anti-overheating garbage placing device comprises a bottom plate, a can body is placed on the bottom plate, a can cover is rotatably connected to the upper side wall of the can body, a cooling pipe is fixedly connected to the outer wall of the can body, a connecting pipe is fixedly connected to the end of the cooling pipe, a piston is arranged in the connecting pipe in a sliding mode, a flexible spring is fixedly connected between the piston and the inner wall of the connecting pipe, a water storage tank is fixedly connected to the outer wall of the bottom plate, the end, away from the connecting pipe, of the cooling pipe is fixed to the outer wall of the water storage tank and communicates with the interior of the water storage tank, and a sliding plate is arranged in the water storage tank in a sliding mode. According to the anti-overheating garbage placing device, rainwater is collected and stored, water is extruded into the cooling pipe to adsorb heat of the can body when people walk, electromagnets are triggered to be powered on to jack up the sliding plate when no people walk, the water is discharged intothe cooling pipe, heat dissipation and cooling of the can body are achieved, and the problem that bacteria and viruses breed due to the fact that the temperature of the can body is too high is solved.

Provided is a thermo-photovoltaic power generation system based on a heat pipe heat radiation platform. The thermo-photovoltaic power generation system comprises a heating module, a radiator, a thermoelectric conversion module, and a cooling module, the radiator emits infrared radiation energy through the heating of the radiator via the heating module, the thermoelectric conversion module is arranged at the periphery of the radiator in a surrounding manner and used for receiving the infrared radiation energy emitted by the radiator and converting the infrared radiation energy to electric energy for output, the cooling module employs a separated gravity flat heat pipe for heat exchange and takes excess heat of the thermoelectric conversion module, the cooling module comprises a heat pipe flat evaporator arranged at the external part of the thermoelectric conversion module in a surrounding manner and a condenser positioned above the heat pipe flat evaporator, the inner part of the heat pipe flat evaporator is provided with a liquid-phase cooling working medium used for receiving excess heat of the thermoelectric conversion module and performing boiling phase-changing evaporation, the excess heat is changed into gas phase, the condenser and the heat pipe flat evaporator are arranged in a separate manner and connected via a pipeline, and the condenser is used for condensing the received gas-phase cooling working medium into liquid phase. According to the system, the separated gravity flat heat pipe is employed for heat radiation and cooling of a photovoltaic cell, the temperature uniformity is improved, the system is applicable to the requirement of power supply of spacecraft and ground remote areas, and the application range is wide.

The invention discloses a phase-change thermoelectric composite heat dissipation system. The system comprises a cabinet body, a phase change heat dissipation mechanism and a thermoelectric heat dissipation mechanism. The phase change heat dissipation mechanism is arranged on the cabinet body and is used for carrying out heat dissipation on the cabinet body in a refrigerant phase change refrigeration mode, and the thermoelectric heat dissipation mechanism is arranged on the cabinet body and is used for carrying out forced heat dissipation on a condensation end of the phase change heat dissipation mechanism in a thermoelectric refrigeration mode. Thus, the cabinet body is cooled through the change of the refrigerant medium state of the phase change cooling mechanism; and meanwhile, the condensation end of the phase change heat dissipation mechanism is subjected to forced heat dissipation in a thermoelectric refrigeration mode through the electric heat dissipation mechanism, continuous and stable operation of the phase change heat dissipation mechanism is guaranteed, the heat dissipation efficiency can be greatly improved through combined use of the two heat dissipation modes, and thehigh heat dissipation performance is guaranteed. Compared with the prior art, on the basis that the heat dissipation performance of the server cabinet is guaranteed, the requirement for the operationenvironment is lowered, the operation noise is lowered, and the arrangement cost is reduced. The invention also discloses a server cabinet, and the beneficial effects of the server cabinet are as described above.

The invention relates to a water cooling device for industrial waste water treatment. The water cooling device comprises a body, a drive mechanism, a cooling mechanism, a heat absorption mechanism and a central control mechanism. The cooling mechanism comprises a transmission rod, a piston, a shell and cooling assemblies. Each cooling assembly comprises a water inlet pipe, a water outlet pipe, a water turbine and spray heads. The heat absorption mechanism comprises a heat absorption water pipe, a transmission sleeve and multiple heat absorption fins. According to the water cooling device for industrial waste water treatment, water enters the shell from the water inlet pipe and then is pushed by the piston to enter the water turbine from the water outlet pipe, the water presents the rotating mist spray form due to rotation of the water turbine, and thus the water is cooled; and when the water sprayed by the spray heads is sprayed to the heat absorption fins, the heat absorption fins can control the different heat absorption fins to absorb heat of the water when bearing the acting force, the heat absorption effect of the water is improved, and the reliability of the device is improved.

The invention discloses a mechanical sealing device and belongs to the field of sealing devices. The mechanical sealing device comprises a mechanical sealing assembly arranged on a rotation shaft in a sleeving mode, a first sealing gland, a second sealing gland, a sealing base, a pumping ring and a fan, wherein the first sealing gland and the second sealing gland are arranged on the rotation shaft in a sleeving mode and arranged on the two sides of the mechanical sealing assembly, the sealing base is arranged between the first sealing gland and the second sealing gland, the pumping ring is fixedly arranged on a movable ring of the mechanical sealing assembly in a sleeving mode, and the fan is arranged on the rotation shaft in a sleeving mode and arranged spaced from the mechanical sealing assembly. An annular sealing cavity is formed among the mechanical sealing assembly, the first sealing gland, the second sealing gland and the sealing base. The pumping ring is located in the sealing cavity. The sealing cavity is internally provided with a liquid medium and a heat conduction block. By means of rotation of the pumping ring, the liquid medium circularly flows in the sealing cavity, and therefore heat produced by working of the mechanical sealing assembly is fully transmitted to the heat conduction block and dissipated through the fan, and then the heat dissipating and cooling of the mechanical sealing assembly are achieved.

The invention relates to a cabinet and a server cooling device. The server cooling device comprises a fog cooling bin, an atomizer and an in-bin heat exchanger. The fog cooling bin is provided with asealing cavity used for containing all or part of a server, and the sealing cavity is further used for storing a cooling working medium; the atomizer is located in the fog cooling bin and used for atomizing the cooling working medium to enable the atomized cooling working medium to cool the server, and the in-bin heat exchanger is arranged in the fog cooling bin and used for cooling the cooling working medium in the fog cooling bin. The server is cooled through the atomized cooling working medium; compared with a spraying cooling mode in the prior art, the atomized cooling working medium has better diffusivity, the heat dissipation and cooling of the upward, horizontal and downward outer surfaces of the heating part in the sealed cavity can be achieved, the cooling uniformity of the servercooling device can be improved, the server cooling device can adapt to installation modes of various servers, and the server cooling device has good adaptability.

The invention discloses a practical training device for large electromechanical equipment maintenance teaching. The practical training device comprises a tool box, partition plates, box doors and moving wheels. The partition plate is fixed in the tool box; the box door is installed on the front portion of the partition plate, the moving wheels are installed on the lower portion of the tool box, aprotective shell is fixed to the upper portion of the tool box, a groove is formed in the front portion of the protective shell, a control panel is installed in the groove, a large-torque motor is fixed in the protective shell, and a fixing ring is installed on the upper portion of the protective shell. According to the invention, the large-torque motor, a key sleeve and a turntable are arranged,so the electromechanical equipment can simply rotate and be displayed in an all-round mode; by arranging the silent motor, the threaded rod, the sleeve and the telescopic rod, the position and the height of the writing board can be adjusted, the situation that the writing board affects maintenance can be avoided, and therefore the practical value of the device is improved.

The invention discloses a sulfur hexafluoride insulated inflatable ring main unit. The ring main unit comprises a cabinet body, and a cabinet door is arranged on the front side of the cabinet body; and the cabinet body is provided with an air cavity and a cavity. Vertically-arranged supporting legs are slidably connected to the four corners of the bottom of the cabinet body; an air box is arrangedat the top of the inner side of the cavity; one end of a bent pipe is fixedly connected to each of two sides of the air box, and the other end of the bend pipe communicates with the air cavity; a motor is fixedly connected to the inner wall of one side of the cavity, an output shaft of the motor is fixedly sleeved with a first fan blade, two rotary discs and multiple sets of second fan blades, the multiple sets of second fan blades are all located on the inner side of the air box, the air box is located between the two rotary discs, and the first fan blades are located on the outer side of the air box. The sulfur hexafluoride gas circulation flowing effect is improved, heat dissipation is facilitated, the temperature in the ring main unit is reduced, the wheels on the ring main unit supporting legs can ascend and descend freely by means of power of the motors, and the ring main unit can be transferred conveniently in a labor-saving mode.

The invention discloses a control system for delivery of a diesel engine cylinder head and a control method of the control system. The control system comprises a box body, wherein a feed port and a discharge port are formed in side walls of the left side and the right side of the box body respectively, supporting plates are fixedly connected onto the front wall and the rear wall of an inner cavityof the box body respectively, a feed sloping plate is fixedly connected to the position, close to the left side, of the top of the supporting plates, the top of the feed sloping plate is fixedly connected with the bottom of an inner cavity of the feed port and extends out of the box body, a discharge sloping plate is fixedly connected to the position, close to the right side, of the bottom of thesupporting plates, the bottom of the discharge sloping plate is fixedly connected with the bottom of an inner cavity of the discharge port, a straight plate is arranged between the two supporting plates, connecting pieces are fixedly connected to the positions, close to the left and right sides, of the bottom of the straight plate respectively, and front walls of the connecting pieces are movablyconnected with vertical plates through rotating shafts and bearings. By means of a series of structures, the control system has the characteristics of high delivery efficiency and high cooling efficiency.

The invention relates to a liquid cooling and heat dissipating system for a digital light processing (DLP) projector. The system comprises an optical main body and a sealing member, wherein the sealing member is used for sealing the optical main body and conducting and dissipating the heat generated by the optical main body; the sealing member comprises a shell and a heat dissipating device; the optical main body is sealed by the shell; the heat dissipating device comprises a coolant pump, a cooling pipeline, a heat conducting plate and a heat dissipater; the heat conducting plate and the heat source of the optical main body are tigtly jointed; the heat conducting plate is connected with the heat dissipater through the cooling pipeline; and the coolant pump is arranged on the cooling pipeline. The liquid cooling and heat dissipating system for the DLP projector carries out heat exchange through the sealing member to quickly discharge the heat out of the DLP projector, so that the heat of the DLP projector can be quickly dissipated in the unpolluted environment to cool the DLP projector, thereby effectively ensuring the imaging quality.

The invention discloses a UVC heat dissipation protection device, a sterilization air conditioner and a sterilization control method. The UVC heat dissipation protection device comprises a box body, aUVC sterilization module, a temperature monitoring module and a heat dissipation device, wherein the heat dissipation device comprises a first-grade heat dissipation module and a second-grade heat dissipation module; the first-grade heat dissipation module comprises a heat dissipation panel and a heat dissipation fin; the second-grade heat dissipation module comprises multiple second heat dissipation holes formed in the box body as well as an openable mechanism used for starting or closing the second-grade heat dissipation holes; and the openable mechanism comprises a baffle and a vertical driving mechanism used for driving the baffle to realize vertical motion. The UV heat dissipation protection device can automatically select different grades of heat dissipation according to different power consumptions of the UVC sterilization module to realize heat dissipation and cooling of the UVC sterilization module, so that the UVC sterilization module can be protected, the sterilization timeof the UVC sterilization module is prolonged, and the service life of the UVC sterilization module is increased.

The invention discloses a self-circulation heat radiating type cutting machine. The self-circulation heat radiating type cutting machine comprises a cutting machine main body, and the cutting machinemain body comprises a spindle box, wherein the spindle box is internally provided with a coolant which flows circularly and conducts cooling and heat radiating on a spindle and a bearing which are located in the cutting machine main body. After the above structure is adopted, compared with the prior art, the coolant can make direct contact with the heating portion in the spindle box, the heat radiating speed is increased, and the heat radiating efficiency is improved. In addition, the coolant conducts self circulation, the use amount of the coolant can be reduced, meanwhile, pollution and consumption of the coolant are decreased, and the cooling cost is greatly reduced.

The invention relates to a heat dissipation type hub which comprises a rib, spokes and a wheel core. An annular installation cavity is formed in the outer side of the wheel core and provided with fan blades. Each fan blade comprises a blade shaft arranged in the installation cavity. Each one-way bearing comprises a bearing body. Each bearing body comprises an outer ring and an inner ring. At least four grooves are formed in each inner ring in the circumferential direction and comprise the pin roller grooves and the elastic avoiding grooves. Pin rollers are arranged in the pin roller grooves. Notches are formed by the corresponding pin roller grooves in each inner ring. Elastic pieces are arranged in the elastic avoiding grooves. When the elastic pieces abut against the pin rollers in the pin roller grooves, the pin rollers extend into the corresponding inner ring through the notches of the corresponding pin roller grooves. The diameter of the notches of the pin roller grooves is smaller than that of the pin rollers. The diameter of inlets of the elastic avoiding grooves is larger than that of the pin rollers. The hub rotates to drive the fan blades to rotate in one direction, and the temperature of the hub is reduced through wind force of the fan blades.

The invention discloses a heat dissipation and anti-falling protection device for electronic equipment, and the device comprises a housing, a first-stage cavity and a second-stage cavity which are communicated with each other are formed in the bottom end of the housing, water cooling mechanisms are arranged in the first-stage cavity and the second-stage cavity, storage side grooves are correspondingly formed in two sides of the housing, and supporting mechanisms are arranged in the storage side grooves. The first-stage cavity and the second-stage cavity are respectively provided with a water bag filled with low-temperature distilled water and a guide plate for transmitting low temperature, and the low-temperature guide plate is used for providing comprehensive low-temperature contact for the electronic equipment nested in the housing, so that water-cooling heat dissipation is realized; the water bag and the guide plate are used for increasing the balance weight at the bottom end of thehousing, so that the low-temperature distilled water in the water bag can flow into a sleeve in a falling state, and a collision switch is triggered to be connected and opened; a controller is used for controlling a main miniature telescopic rod and an auxiliary miniature telescopic rod to be opened in sequence, and therefore support with damping and buffering effects is provided for the housingand the electronic equipment which freely fall off due to falling.

The invention discloses a stable motor base for a numerical control machine tool. The stable motor base comprises a fixed base; the fixed base is of a rectangular structure design, and four bolt limiting lugs are symmetrically arranged on the two sides of the fixed base; a heat dissipation fixing sheet is installed on the upper side of the fixed base in a limiting mode, and a motor is embedded inthe inner side of the heat dissipation fixing sheet; and a junction box is arranged on the top side of the motor, and a limiting groove matched with the motor is formed in the top side of the motor. According to the stable motor base for the numerical control machine tool, the heat dissipation fixing sheet adopts a a sheet structure, a groove structure matched with the motor is formed in the innerside of the heat dissipation fixing sheet, and five motor limiting bolt structures are further arranged on the outer wall of the heat dissipation fixing sheet, so that the heat dissipation area of the motor is increased through the structure design, the heat dissipation effect of the motor is improved, and the service life of the motor is prolonged.

The device relates to the technical field of air conditioning, and discloses an air conditioner outdoor unit. The air conditioner outdoor unit comprises a fan room, a compressor room, a partition plate arranged between the fan room and the compressor room, and a reactor, wherein the partition plate is provided with a hollowed-out part, the hollowed-out part is provided with a blown plate radiatorin an embedded mode, the reactor is in heat conduction contact with the blown plate radiator. The fan room and the compressor room are partitioned by the partition plate, the blown plate radiator is in heat conduction contact and performs heat exchange with the reactor, the blown plate radiator is embedded in the hollowed-out part of the partition plate, air flow of the fan room acts on the blownplate radiator to perform heat dissipation and cooling on a blown plate, so that heat dissipation and cooling on the reactor are achieved, the heat dissipation efficiency of the reactor is improved. The invention further discloses an air conditioner.

The invention relates to a new energy battery storage box which comprises a shell, a heat conduction layer, cooling pipes and a storing cavity. The storing cavity is formed in the shell; the heat conduction layer is arranged between the storing cavity and the shell; and an extrusion plate connected by telescopic rods is arranged on one side of the storing cavity. The heat conduction layer is arranged, the multiple cooling pipes which are arranged in the up-down direction at equal intervals are embedded into the heat conduction layer, the water inlet ends of the cooling pipes are connected witha water storage tank through flow guiding devices, the water outlet ends of the cooling pipes are connected with the other end of the water storage tank, thus a back flow is formed, through the design, a battery in the storing cavity can be cooled, and thus the service life is prolonged. According to the new energy battery storage box provided by the invention, the extrusion plate connected by the telescopic rods is arranged on one side of the storing cavity, through the design, the battery in the storing cavity can be fixed, and thus damage caused by shaking to the battery is avoided.

The invention relates to a generator heat dissipation system of a spraying machine. The system comprises a vehicle body, a power device and a spraying system, the power device and the spraying system are arranged on the vehicle body, the power device comprises an internal combustion engine and a generator connected with the internal combustion engine, the spraying system comprises an agent box, liquid conveying pipes, a pump and a spraying head, and the agent box is connected with the pump through the liquid conveying pipe; and the pump is connected with a liquid cooling radiator through the liquid conveying pipe, and the liquid cooling radiator is connected with the spraying head through the liquid conveying pipe and assembled on the generator. According to the generator heat dissipation system of the spraying machine, agent liquid carried in the agent box serves as cooling liquid, the agent liquid flows through the liquid cooling radiator on the generator in the spraying operation process and during field edge transition, heat transmitted to the liquid cooling radiator by the generator is taken away, heat dissipation and cooling of the generator are achieved, the amount of the agent liquid carried in the agent box is large, the agent liquid is used as the cooling liquid, a cooling liquid container does not need to be carried independently, and a cooling device for cooling the agent liquid does not need to be arranged when the amount is large.

The invention discloses an intellectual property service management platform, which belongs to the field of intellectual property services. The platform comprises a service management platform, the service management platform comprises an enterprise docking system, a patent management system, a litigation right protection system, a trademark management system, a project management system and a software copyright management system, by means of a product filing module, an enterprise can transmit data of products to the platform in a picture and video mode or send real objects to a service platform, the platform builds corresponding data banks for different clients so that a large amount of time does not need to be spent in searching for repeated data, the service efficiency is greatly improved. Each enterprise has an independent account, which can be logged in for uploading data conveniently, communication with the service platform can be conducted at any time through an online cloud communication module, in addition, a cloud server on the online cloud communication module is provided with a self-heat-dissipation device, the use stability can be improved, and the platform can operatestably.

The invention discloses an onboard electronic part device for rail transit. The onboard electronic part device comprises a printed circuit board, and multiple electronic parts different in height are mounted on the printed circuit board; the onboard electronic part device comprises a heat radiation board and multiple heat conduction pad components different in height, the heat radiation board and the heat conduction pad components are matched with each other, the electronic parts are pressed between the printed circuit board and the heat radiation board, and the heat conduction pad components are correspondingly filled between the electronic parts and the heat radiation board and used for adjusting to enable each electronic part to be compressed and fitted with the heat radiation board to conduct heat onto the heat radiation board for heat radiation. The onboard electronic part device has the advantages of scientific and reasonable design, simple and compact structure and good heat radiation effect.

The invention discloses a heat dissipation type SVG equipment box body, relates to the technical field of static var generator heat dissipation, and aims at solving the problem that an existing SVG equipment box body is poor in heat dissipation performance. A component cavity is formed in the box body, two sets of mounting plates are arranged in the component cavity, each set of mounting plates comprise three mounting plates, snakelike heat exchange pipes are mounted in the mounting plates, a first temperature sensor is mounted on one side of the component cavity, a supporting plate is arranged above the component cavity, a refrigeration cavity is formed above the supporting plate, three evaporators are installed in the refrigeration cavity, the evaporators and the box body are fixed through bolts, air ducts are arranged at the two sides of the bottom of the component cavity, bearing seats are fixedly installed in the air ducts, water vapor adsorption devices are installed in the bearing seats, water vapor adsorption devices are fixedly installed in the bearing seats, the water vapor adsorption devices are rotationally connected with the bearing seats, and cooling fans are installed on the inner sides of the air channels.

The invention discloses a cooling device for clinker in a grate cooler. The cooling device comprises a grate cooler body; supporting columns are installed at the two sides of the lower surface of thegrate cooler body correspondingly; a base is installed at the other ends of the supporting columns; a water storage tank is installed at one side of the upper surface of the base; the water storage tank is located at one side of the grate cooler body; an air outlet pipe is installed at one side of the inner wall of the grate cooler body; the other end of the air outlet pipe is connected with a heat conduction coil through a connector; the other end of the heat conduction coil penetrates through a water storage tank; a supporting plate is installed above one side of the outer wall of the waterstorage tank; a water pump is installed on the upper surface of the supporting plate; the water outlet end of the water pump is connected with a water conveying pipe; and the other end of the water conveying pipe penetrates through the water storage tank. According to the cooling device for the clinker in the grate cooler, through the arrangement of a series of structures, the heat dissipation andcooling speed of the clinker in the grate cooler body can be increased, and meanwhile heat of the clinker can be absorbed and utilized.

The invention discloses a passenger car ATS fan windshield, which comprises a windshield main body, a first mounting plate is arranged on the top of the windshield main body, and several windshield devices are arranged on the side of the windshield main body. The inside of the wind protection device is provided with a fan, the inside of the fan is provided with blades, the side of the fan is provided with several protection rods, one side of the main body of the wind protection cover is provided with a fault detector, a sealing rubber The side of the main body of the windshield is equipped with a speed adjustment knob, and the speed adjustment knob is electrically connected to the fan. The bottom end of the main body of the windshield is provided with a second mounting plate. The first mounting plate, the second mounting plate and the mounting holes can install the main body of the windshield, the horizontal partition and the longitudinal partition can divide each windshield, and the protection of the fan is realized through the windshield and the protection rod , the heat dissipation and cooling of the passenger car are realized through the fan.

The invention discloses a hot bending molding device for a glass curved surface. The hot bending molding device comprises a frame; a box is arranged on the frame; a control console, a push-out mechanism and a push-in mechanism are respectively arranged on the front side, left side and right side of the frame; at least one set of heating mechanism, at least one set of hot-pressing mechanism, at least one set of transition cooling mechanism and at least one set of cooling mechanism are successively arranged on the mounting frame; a piece of glass is placed in a graphite molding die; the push-inmechanism is used for pushing the graphite molding die loaded with the glass into the heating mechanism for heating; a poking mechanism is used for poking the graphite molding die to pass by the hot-pressing mechanism, the transition cooling mechanism and the cooling mechanism in turn and then pushing the graphite molding die into the push-out mechanism for pushing out.

The invention discloses a high-temperature-resistant cable for a new energy vehicle. The cable comprises a wire core; an insulating layer, a photonic crystal layer and a sheath layer are sequentiallywrapped on the wire core from inside to outside; threads are arranged on the outer surface of the insulating layer; the crests of the threads abut against the inner wall of the photonic crystal layer,so that a cavity extending in the axial direction of the cable is formed between the insulating layer and the shielding layer; the cavity is filled with air; the photonic crystal layer generates a photonic band gap, so that the shielding of external radio waves is achieved, and meanwhile heat in the air in the cavity can be radiated outwards from an infrared band. According to the cable of the invention, heat on the wire core can be conducted to the air in the cavity, bulging caused by over-high local temperature of the cable can be avoided, the dielectric constant of the insulating layer canbe effectively reduced, the dielectric loss is reduced, and the transmission efficiency of the cable is remarkably improved; the photonic band gap is generated through the photonic crystal layer, sothat the shielding of the external radio waves is achieved, meanwhile, the heat in air in the cavity can be radiated outwards from the infrared band, and heat dissipation and cooling are achieved.

The invention provides a heat dissipation method for a hydrogen fuel cell. The method comprises the following steps: (A) collecting water generated by electrochemical reaction of the hydrogen fuel cell; (B) guiding the collected water to flow to the outer surface of a radiating part of a radiator of the hydrogen fuel cell. According to the heat dissipation method for the hydrogen fuel cell, heat dissipation of the hydrogen fuel cell can be enhanced by utilizing an additional heat dissipation means, so that the temperature of the hydrogen fuel cell is kept within a normal temperature range.

The invention discloses a mechanical sealing device and belongs to the field of sealing devices. The mechanical sealing device comprises a mechanical sealing assembly arranged on a rotation shaft in a sleeving mode, a first sealing gland, a second sealing gland, a sealing base, a pumping ring and a fan, wherein the first sealing gland and the second sealing gland are arranged on the rotation shaft in a sleeving mode and arranged on the two sides of the mechanical sealing assembly, the sealing base is arranged between the first sealing gland and the second sealing gland, the pumping ring is fixedly arranged on a movable ring of the mechanical sealing assembly in a sleeving mode, and the fan is arranged on the rotation shaft in a sleeving mode and arranged spaced from the mechanical sealing assembly. An annular sealing cavity is formed among the mechanical sealing assembly, the first sealing gland, the second sealing gland and the sealing base. The pumping ring is located in the sealing cavity. The sealing cavity is internally provided with a liquid medium and a heat conduction block. By means of rotation of the pumping ring, the liquid medium circularly flows in the sealing cavity, and therefore heat produced by working of the mechanical sealing assembly is fully transmitted to the heat conduction block and dissipated through the fan, and then the heat dissipating and cooling of the mechanical sealing assembly are achieved.