923results about How to "Prevent freezing" patented technology

The invention relates to an anti-icing-deicing composite surface and a preparation method thereof, and belongs to the field of anti-icing and deicing. The surface comprises a porous material substrate, a super-hydrophobic / hydrophobic lubricating fluid top microstructure and a hydrophobic / hydrophilic lubricating fluid internal microstructure, wherein the super-hydrophobic / hydrophobic lubricating fluid top microstructure and the hydrophobic / hydrophilic lubricating fluid internal microstructure are coupled to the surface of the porous material substrate; lubricating fluid is injected into the surface of the hydrophobic / hydrophilic lubricating fluid internal microstructure; the super-hydrophobic / hydrophobic lubricating fluid top microstructure is located on the surfaces of a plurality of columnar bodies arranged on the porous material substrate in an array mode, namely, the super-hydrophobic / hydrophobic lubricating fluid top microstructure has the super-hydrophobic characteristic to water and lubricating fluid. And the hydrophobic / lubricating fluid-loving internal microstructures are also arranged in the array form, surround the root of each cylindrical object, and have the characteristics of lubricating fluid loving and hydrophobicity. The surface can have anti-icing / ice-dredging properties of super-hydrophobic and super-smooth properties at the same time, that is, the surface can have excellent anti-icing properties of a super-hydrophobic surface, and can also be ice-dredging like a super-smooth surface after the surface is iced, so that ice is easier to remove.

The invention discloses an alpine region-based double-curvature arch dam aeration ice-melting anti-icing device, and relates to the technical field of anti-icing, the alpine region-based double-curvature arch dam aeration ice-melting anti-icing device comprises a double-curvature arch dam body, a lifting structure, an aeration anti-icing structure, a PLC controller, a temperature sensor and a liquid level sensor are arranged on the outer convex curved surface side of the double-curvature arch dam body, and the aeration anti-icing structure comprises a plurality of fourth connecting pipes; the bottoms of the outer sides of the fourth connecting pipes are fixedly connected with a plurality of pressure release valves, and the bottoms of the pressure release valves are fixedly connected with bubble generators, so that along with the rise of the internal air pressure of the fourth connecting pipes, the air flow bursts through the pressure release valves and then is discharged through the bubble generators, and a large number of bubbles are generated; and in the process that the bubbles move towards the water surface, the water surface is stirred, the water surface is prevented from being frozen, the anti-freezing effect on the upstream side of the hyperbolic arch dam body is comprehensively achieved, and damage to the structure of the upstream side of the hyperbolic arch dam body caused by freezing is reduced.

The invention discloses a dam body anti-icing and anti-freezing device, and relates to the related technical field of water conservancy and hydropower engineering buildings, the device comprises an air pump, the output end of the air pump is connected with an air inlet pipe, the air inlet pipe is suspended in a water body, the device further comprises a bubble unit, and the bubble unit comprises a driven pipe; a plurality of driven pipes are evenly arranged on the air inlet pipe in the axial direction of the air inlet pipe in a running fit mode, a plurality of exhaust pipes are evenly arranged on each driven pipe in the axial direction of the air inlet pipe, the two ends of each exhaust pipe are each provided with a bubble pipe, and the same exhaust pipe and the bubble pipes at the two ends of the same exhaust pipe are connected to form a Z-shaped pipe fitting. When the water surface needs to be subjected to anti-icing treatment, the air pump is started to convey air into the driven pipe through the corrugated pipe and the air inlet pipe, and the air in the driven pipe is exhausted from the exhaust pipe and the bubble pipe, so that microbubbles exhausted from the bubble pipe can prevent the water surface from icing, and the bubble pipe drives the driven pipe to rotate on the air inlet pipe; and the risk of bubble pipe blockage can be greatly reduced.

The invention discloses a wear-resistant and corrosion-resistant butterfly valve, and relates to the field of butterfly valves, the wear-resistant and corrosion-resistant butterfly valve comprises a butterfly valve and an electric controller mounted on the butterfly valve, the electric controller is used for controlling opening and closing of the butterfly valve, connecting pipelines are mounted on two sides of the butterfly valve, and the butterfly valve and the two connecting pipelines are sleeved with two heat insulation boxes. It needs to be explained that in the embodiment of the invention, through the arrangement of the heat preservation boxes and the light-transmitting plate, in the using process of the butterfly valve, the two heat preservation boxes seal and protect the butterfly valve and the electric controller as well as the connecting position of the butterfly valve and the two connecting pipelines, and the problem that the butterfly valve is corroded by being exposed to the sun and rain for a long time is avoided; meanwhile, a light-transmitting plate is installed on the heat preservation box, the interior of the heat preservation box is heated by transmitting sunlight, the heat preservation function is achieved, normal use of the butterfly valve is guaranteed, and freezing is avoided; in addition, when the sunlight intensity is high, the folding shielding cloth is unfolded to shield the light-transmitting plate, and the problem that the electric controller is damaged due to the fact that the temperature is too high is avoided.

The utility model relates to the field of anti-freezing devices, in particular to a gate anti-freezing device which comprises a bottom plate, a gate body is movably installed at the upper end of the bottom plate, a main beam is fixedly installed at the upper end of the gate body, water pumps are fixedly installed on the two sides of the upper surface of the main beam, and turbulent flow mechanisms are fixedly installed at the upper ends of the water pumps. A boss is fixedly installed on the rear surface of the main beam, and a fixed base is fixedly installed on the upper surface, located under the boss, of the bottom plate. A turbulent flow mechanism is adopted, a water pump conveys water flow on the side with the high water level of a reservoir into a drainage main pipe through a water suction pipe, water flow scouring is conducted on the two sides of the gate body through spray pipes, and the water body is kept moving to avoid icing. When the air temperature is too low, the gate body is frozen, the ice breaking mechanism slidably installed at the lower end of the main beam is used for breaking, the floating barrels arranged on the two sides of the floating plate guarantee that the ice breaking mechanism is kept at the upper end of the water surface, the influence of the water surface height is avoided, and ice breaking operation can be continuously conducted.

The carbon dioxide unloading system comprises a liquid carbon dioxide storage tank, a heater, an unloading pump, a receiving tank, a plurality of pipelines and a control valve, an outlet of the liquid carbon dioxide storage tank is divided into a first pipeline and a second pipeline, the first pipeline is communicated with the heater, and the second pipeline is communicated with the receiving tank. The second pipeline is communicated to a first inlet of the receiving tank through a fifth control valve; the first pipeline is provided with a first control valve before entering the heater; the carbon dioxide outlet end of the heater is divided into a third pipeline and a fourth pipeline after passing through the second control valve; the third pipeline is provided with a third control valve and communicated with a second inlet of the receiving tank, and the fourth pipeline passes through an eighth control valve and then returns to the liquid carbon dioxide storage tank; the unloading system is provided with at least one pipeline leading to the atmosphere. Through the perfect unloading process flow design, the potential safety hazards that water is frozen, carbon dioxide forms dry ice, the pressure in the unloading system is too high and the like are properly solved, and the unloading system can operate safely and stably.

The invention provides an unmanned aerial vehicle for intelligent identification of a polar ice rink. The unmanned aerial vehicle comprises an aerial vehicle main body, a solar battery pack, rudder wings, a spiral propeller and an observation cabin, the aircraft is powered by solar energy, so that long endurance time can be achieved; the rudder wings are symmetrically installed on the two sides of the aircraft body to achieve lifting and steering of the aircraft body. The spiral propeller provides propulsive force and cooperates with the rudder wings to complete lifting steering motion. A plurality of functional modules are arranged in the observation cabin, and the functions of ice rink recognition, aircraft and transport ship positioning, data transmission, state monitoring and the like can be achieved. Illumination warning lamps are arranged on the front edges of the two wings of the aircraft, so that ice rink identification and aircraft landing under the extremely night condition are facilitated. The invention also provides a polar ice rink intelligent identification method of the unmanned aerial vehicle. The sea ice morphology around the navigation channel can be observed in detail and accurately, accurate sea ice data can be obtained, the polar transport ship is helped to sail, a captain is assisted to make a decision, and the risk of distress is reduced.

The utility model relates to the technical field of water heaters, and discloses a pipeline anti-freezing device for an outdoor water heater, which comprises a water heater pipeline, the surface of the water heater pipeline is sleeved with a foam sleeve, the surface of the foam sleeve is sleeved with a heat preservation component, the surface of the heat preservation component is sleeved with a heating pipe, and the surface of the heating pipe is sleeved with a water inlet pipe. A cavity is formed in the inner wall of the heating pipe, an electric heating wire is fixedly arranged in the cavity, the surface of the heating pipe is sleeved with an aluminum foil layer, the surface of the aluminum foil layer is sleeved with a corrugated extension pipe, the surface of the corrugated extension pipe is sleeved with a waterproof film, and the surface of the waterproof film is sleeved with an A fixing ring. According to the pipeline anti-freezing device for the outdoor water heater, through the arrangement of the electric heating wire, the fixing ring A and the fixing ring B are installed on the outer surface of the waterproof film and communicated with an external power source, the temperature sensor senses the external temperature, and when the temperature is low, the temperature controller controls the electric heating wire to heat, heat the pipeline and melt ice, so that the pipeline of the water heater is prevented from being frozen to crack.

The invention relates to a cold region tunnel energy-saving heat-preservation anti-freezing system and a control method, the cold region tunnel energy-saving heat-preservation anti-freezing system comprises an energy storage heating module, a temperature monitoring module, an air circulation module, a drainage anti-freezing module, a lining and an off-wall heat-preservation layer, the lining and the off-wall heat-preservation layer form an air heat-preservation cavity, and the air heat-preservation cavity communicates with the energy storage heating module; the energy storage heating module is used for generating and storing heat and providing a heat source for air in the air heat preservation cavity and the air circulation module, and the temperature monitoring module is used for collecting and analyzing the temperature of air in the air heat preservation cavity and the temperature of air in the air circulation module and the inner wall of the air heat preservation cavity. According to the embodiment of the invention, a stable heat preservation and anti-freezing effect can be provided in a negative temperature environment for a long time, the operation cost is low, safety and reliability are realized, the problems of high energy consumption, potential safety hazards and the like in the prior art are solved, the applicability is wide, and the practicability is high. And the method has good practical value and economic benefit.

The invention provides a winter protection device and method for a steel pipe type water level gauge platform, and the protection device comprises a protection steel ring which sleeves a steel pipe and can slide up and down along the steel pipe along with the height of the water level; the outer wall of the protective steel ring is connected with a first floating body, so that the protective steel ring floats on the water surface; the air bag mechanism is arranged on the steel pipe in a sleeving mode and located in the protective steel ring; the air bag mechanism can float on the water surface and can slide up and down along the steel pipe along with the water level change; the air bag mechanism can be inflated or deflated so as to realize volume change; an annular protection area is formed in the area between the air bag mechanism and the protection steel ring, and the air bag mechanism is connected with an inflation and deflation executing mechanism with a controller to achieve inflation and extrusion of the annular protection area. The invention has the advantages of simplicity, high efficiency, low cost and high practicability, and can play a good protection role.

The utility model provides a photovoltaic panel cleaning trolley, and relates to the field of photovoltaic panel cleaning. The cleaning vehicle comprises a vehicle body, a water spraying device, a sweeping device and a water stain cleaning device, the sweeping device comprises a first mounting frame, a rolling brush and a sweeping motor, and the first mounting frame is mounted in front of the vehicle body; the rolling brush is rotatably mounted on the first mounting frame; the cleaning motor is fixedly mounted on the first mounting frame; the water spraying device comprises a water tank, a self-sucking pump and a nozzle; the water tank and the self-sucking pump are arranged on the vehicle body; the nozzle is arranged on the first mounting frame; the clean water stain device comprises a second mounting frame, a sponge and an extrusion motor, and the second mounting frame is mounted behind the vehicle body and comprises a rear baffle; a pressing plate capable of reciprocating back and forth is mounted on the second mounting frame; the sponge is arranged between the rear baffle and the pressing plate; the extrusion motor is fixedly connected with the second mounting frame, and an output shaft is in transmission connection with the pressing plate. The cleaning vehicle can greatly improve the cleaning effect on the photovoltaic panel, and is low in requirement on water resources, so that the cleaning vehicle is wide in application range and very suitable for northwest regions.

The invention discloses a purging method and system of a fuel cell and electronic equipment. The purging method of the fuel cell comprises high-temperature purging, cooling purging and low-speed purging which are carried out in sequence, wherein the high-temperature purging comprises the steps of controlling the temperature of the galvanic pile to be a high-temperature purging temperature, controlling air to purge the galvanic pile, and controlling hydrogen to cyclically purge the galvanic pile; the step of cooling and purging is that the temperature of the electric pile is controlled to be reduced from a high-temperature purging temperature to a low-temperature purging temperature, and in the cooling process, purging of the electric pile by air is stopped, and circulating purging of the electric pile by hydrogen is kept; the low-speed purging is characterized in that the temperature of the electric pile is controlled to be a low-temperature purging temperature, and the gas flow of hydrogen circulating purging is reduced so as to perform low-speed purging on the electric pile. According to the fuel cell purging method and system and the electronic equipment provided by the invention, the liquid in the fuel cell system can be effectively discharged, and the cold start capability of the fuel cell system is improved.

The utility model provides an automatic-cleaning constant-temperature water trough for sheep, which comprises a trough body arranged at a use place as required; the water inlet is formed in one end of the tank body and connected with a water inlet pipeline; the water control device is arranged in the tank body and is connected with the water inlet; the heating group is used for heating drinking water in the tank body and is arranged at the bottom of the tank body, and one end of the heating group is connected with a wire penetrating through the tank body; the cleaning group is used for cleaning the interior of the tank body, is arranged at the bottom of the tank body and is adjacent to the heating group; the water outlet is formed in the bottom of the tank body and is far away from the water inlet, and a water drainage pipe is connected to the water outlet; according to the constant-temperature water trough for automatically cleaning the sheep, the interior of the trough body can be automatically cleaned under the condition that the temperature of drinking water in the trough body is ensured, the difficulty of cleaning the trough body is reduced under the condition that the temperature of drinking water in a flock of sheep is ensured, and the cleaning cost is further reduced.

The invention discloses an extremely low temperature resistant gel electrolyte and a preparation method and application thereof, and belongs to the technical field of gel electrolytes and preparation thereof. The problems that an existing gel electrolyte is prone to freezing at low temperature, and the mechanical property and the ionic conductivity are difficult to consider at the same time are solved. According to the invention, the hydrophilic substance maltitol is introduced into the gel electrolyte, so that the phenomena of dendritic crystal, corrosion, passivation and the like at the interface of the electrolyte and a zinc anode are relieved without introducing an organic solvent, and meanwhile, the introduced maltitol destroys the hydrogen-bond interaction between deionized water, so that the freezing of solvent water is inhibited; according to the present invention, the ultra-low temperature performance of the gel is improved, the ultra-low temperature resistance of the gel electrolyte is ensured, the gel electrolyte has excellent cycle stability under the condition of-60 DEG C 10 mAcm <-2 >, and the obtained gel electrolyte further has excellent mechanical property.

The utility model provides a drain pipe anti-freezing structure suitable for an air conditioner room, which relates to the technical field of tobacco leaf storage and comprises a drain pipe arranged on a wall body and an annular pipe arranged on the outer side of the drain pipe, a heating block positioned on the outer side wall of the drain pipe is arranged on the inner side of the wall body, and one end, close to the outer side of the wall body, of the annular pipe is closed. The end, close to the inner side of the wall, of the annular pipe is provided with an opening expanding towards the heating block. According to the utility model, the structure is simple, the characteristic of constant temperature in the tobacco mellowing air conditioner room is effectively utilized, and the heating block which plays a role in heating a heat source in the air conditioner room is arranged on the outer side of the drainage pipe, so that the machine room and the drainage pipe are simultaneously heated, and the drainage pipe is effectively prevented from being frozen, and the annular pipe communicated with the inner side of the machine room is arranged on the outer side of the drainage pipe. Therefore, air inside the machine room effectively exchanges heat with the drainage pipe, the anti-freezing capability of the drainage pipe is further ensured, the use cost is low, and the anti-freezing effect is good.

The invention discloses a main engine tail gas carbon collection system, a control method thereof and a dual-fuel LNG ship, a carbon recovery pipeline is arranged on a main engine exhaust pipeline, the carbon recovery pipeline and a fuel gas supply system of a ship main engine are fused, and CO2 in main engine tail gas is recovered in a physical phase change mode, so that the purity of prepared dry ice can be guaranteed, and the carbon recovery efficiency is improved. CO2 in the main engine tail gas discharged into the atmosphere can be effectively removed, and direct emission of CO2 is reduced.

The invention provides an anti-icing film with photo-thermal and ice nucleation capabilities and a preparation method of the anti-icing film. The anti-icing thin film is a multi-phase multi-component hybrid thin film and is prepared from polyethylene, a polyacrylic acid-polyethyleneimine compound, ferroferric oxide nano particles and graphene oxide nano sheets. Wherein the polyacrylic acid-polyethyleneimine compound is dispersed in a continuous phase of a polyethylene matrix in an island-shaped structure, the ferroferric oxide nanoparticles are dispersed in the continuous phase of the polyethylene matrix and on a'sea-island 'interface, an excellent photo-thermal function is given, and the graphene oxide nanosheets are adsorbed on the outer surface of a phase region of the polyacrylic acid-polyethyleneimine compound. As an ice nucleation site, water vapor in the environment is induced to freeze, meanwhile, the vapor pressure of water vapor in the surrounding area is reduced, and freezing of the water vapor on the surface of the polyethylene phase area is inhibited. The anti-icing film provided by the invention can induce environmental water vapor to form a discontinuous ice layer on the surface of the film, reduce the ice adhesive force between the ice layer and the film, and enable the ice layer to be easily removed under the photo-thermal action, thereby achieving the purpose of preventing and removing ice.

The invention discloses a ship navigation signal lamp with anti-freezing and anti-fog functions, and relates to the technical field of signal lamps, the ship navigation signal lamp comprises a base, the base is fixedly connected with a fixing frame, the fixing frame is fixedly connected with a heat collecting ring, a lamp wick is fixedly connected between the fixing frame and the heat collecting ring, and the fixing frame is fixedly connected with a lampshade. According to the signal lamp, in an environment with relatively low temperature or humidity, the air inlet is automatically and locally closed through the opening and closing plate, and the opening of the air inlet is reduced, so that entering of cold air is reduced; heat generated when the inner lamp wick works is gathered by the heat collecting ring and then sequentially passes through the gap between the lampshade and the heat conducting frame and the gap between the lampshade and the pressurizing ring to be guided to the outer wall of the lampshade in an accelerated mode, the outer wall of the lampshade is prevented from being frozen or condensed fog water while heat dissipation is conducted, a heat source is saved, and meanwhile heat dissipation efficiency is improved. The accelerated hot air flow can blow water flow on the lampshade wall downwards, the water flow is accelerated to flow downwards, and the light transmission of the lampshade is guaranteed.

The invention relates to the technical field of railroad bed structures, and discloses a deep season frozen soil area existing railroad bed heat preservation, water insulation and frost heaving prevention structure and a construction method of the deep season frozen soil area existing railroad bed heat preservation, water insulation and frost heaving prevention structure. The invention relates to a heat-insulating waterproof frost heaving-preventing structure for an existing railroad bed in a deep seasonal frozen soil region. The overall cross section of the existing railroad bed is of an axial symmetry structure along the center line of the railroad bed; the existing railway subgrade foundation bed is sequentially provided with a first gravel cushion layer, a waterproof geotechnical cloth layer, a second gravel cushion layer, a geogrid layer and a closed railway ballast layer from bottom to top. Polyurethane heat preservation layers are arranged on side slopes on the two sides of the existing railroad bed. A polyurethane heat preservation layer and a waterproof geotechnical cloth layer are sequentially arranged on the road shoulders on the two sides of the existing railroad bed from bottom to top. A drainage channel is arranged at the slope toe of the existing railroad bed; a polyurethane heat preservation layer is arranged on the connecting section of the slope toe of the existing railroad bed and the drainage channel. The thermal-insulation waterproof frost heaving prevention structure for the existing railroad bed in the deep seasonal frozen soil region can be suitable for treatment and maintenance of frost heaving disasters of the existing railroad bed in the deep seasonal frozen soil region, and has a good engineering application prospect.

The utility model relates to the technical field of filters, in particular to a diesel filter which comprises a filter body, the front side and the rear side of the surface of the filter body are sleeved with a front cover shell and a rear cover shell respectively, a flexible plate is glued between the right side of the front cover shell and the right side of the rear cover shell, and installation inserting plates are glued to the top and the bottom of the left side of the front cover shell. Inserting holes are formed in the tops and the bottoms of the front side and the rear side of the fixed vertical plate; and an intelligent controller is fixedly connected to the top of the front side of the front housing. After the temperature sensor monitors that the external temperature is lower than a preset value, the intelligent controller controls the resistance wire heating net to heat the filter body, in this way, it can be avoided that water filtered from the interior is frozen due to the fact that the temperature in the filter body is low, and it is guaranteed that the filter body can be normally used in the cold environment; when the external temperature is higher than a preset value, the intelligent controller controls the resistance wire heating net to stop working.

The utility model provides a system for regulating and controlling the quality of circulating flue gas. The system comprises a sintering machine, a vertical cooling device and an oxygenating device, and a first flue and a second flue are arranged below the sintering machine. The head air bellow and the middle air bellow are communicated with the bottom of the vertical cooling device through the first flue, and the oxygenating device is communicated with the first flue or the bottom of the vertical cooling device. And the tail air box is communicated with the second flue. According to the system for regulating and controlling the quality of the circulating flue gas, the sintering flue gas of the head air bellow and the middle air bellow is coupled with the oxygen-enriched gas, brand new gas components are provided for pre-cooling of sintered ore, quenching of the sintered ore is avoided, and the quality of the sintered ore is guaranteed. Meanwhile, low-temperature sintering flue gas is converted into high-quality flue gas, the high-quality flue gas circularly enters a sintering material layer or a waste heat recovery system, sensible heat of sintering ore and latent heat of the low-temperature sintering flue gas are fully utilized, and the waste heat utilization efficiency is improved.

The utility model discloses a concrete curing device for concrete preparation, and relates to the technical field of concrete curing. The device comprises a main rod, a rectangular mounting frame is hinged to the top of the main rod, a nozzle is fixedly connected to the interior of the rectangular mounting frame, a connecting hose is fixedly connected to the input end of the nozzle, abutting rollers are rotationally connected to the four corners of the rectangular mounting frame, and an air guide pipe is rotationally connected to the interior of the rectangular mounting frame; and an electric heating wire is fixedly connected into the air guide pipe. After the traction main rod drives the rectangular mounting frame to approach the to-be-watered concrete wall surface, the air pump and the electric heating wire are started to heat external air, and then the heated air is sprayed to the to-be-watered concrete wall surface through the air spraying opening, so that the heated air is conveniently output to the concrete wall surface through the air spraying opening in a low-temperature environment; therefore, the temperature of the concrete wall surface is increased by heating air, normal solidification and drying of the concrete wall surface are guaranteed, and the problems of freezing and strength reduction caused by low temperature are prevented.

The utility model discloses a pipeline anti-freezing and anti-blocking device for a device for obtaining high-purity krypton and xenon gas from liquid oxygen, and belongs to the technical field of gas purification. The anti-freezing and anti-blocking device comprises an electric tracing band, two groups of fixing frames and two groups of fixing mechanisms. The electric tracing band is wound and attached to the periphery of the pipeline through the aluminum foil band, when production is finished or paused, the pipeline is heated through the electric tracing band, and the phenomenon that the interior of the pipeline is frozen and blocked when flow is low is prevented. The two fixing frames are detachably and fixedly arranged at the two ends of the pipeline. The fixing mechanisms are detachably and oppositely installed between the two sets of fixing frames, and the fixing mechanisms are used for fixing the electric tracing band between the two sets of fixing frames, so that the electric tracing band does not loosen or fall off in the using process, and the optimal heating effect is achieved.

The invention discloses an anti-freezing displacement monitoring device suitable for a supergravity centrifugal environment. The anti-freezing displacement monitoring device comprises a sleeve, an iron core rod, and a guide sliding table, a coil, a guide sleeve, a spring, a drainage guide pipe and an anti-freezing solution which are arranged in the sleeve, the guide sliding table, the coil and the guide sleeve are fixedly arranged in the sleeve from top to bottom, the bottom end of the guide sleeve is connected to the inner bottom face of the sleeve in a sealed mode, the drainage guide pipe is vertically arranged in the sleeve and located on the periphery of the guide sleeve, and the spring and the anti-freezing solution are arranged in the guide sleeve. The displacement monitoring device can be normally used in the supergravity centrifugal environment, the anti-freezing solution is arranged in the sleeve, the anti-freezing solution is in a flowing state all the time by arranging the anti-freezing solution circulation path, it can be ensured that the iron core rod cannot be frozen in the extremely low-temperature environment, and normal use of the displacement monitoring device is ensured.

The utility model discloses a charging pile cold-proof cover structure, and relates to the technical field of charging piles, the charging pile cold-proof cover structure comprises a charging box, the left end and the right end of the charging box are respectively provided with an interface, a charging gun is inserted in each interface, and the left end and the right end of the charging box are symmetrically covered with cold-proof cover bodies. According to the utility model, through the arrangement of the cold-proof cover body and the first baffle plate, when the charging gun is pulled out of the interface, the first baffle plate and the second baffle plate are close to the interface through the elastic force of the connecting spring, so that the interface can be covered and protected, and the interface can be effectively prevented from icing and freezing; and a second baffle plate and a moving block are arranged, so that when the charging gun is inserted back into the interface, a worker can pull the second baffle plate outwards at first and then lift up the whole second baffle plate, and therefore, the operation space of a user can be increased, the user can conveniently and horizontally insert the charging gun back into the interface, and the convenience of the device in the use process can be effectively improved.

The invention discloses a thermoelectric sheet, a preparation method thereof and a box girder bridge capable of generating power through temperature difference energy, and the thermoelectric sheet comprises a copper-clad ceramic upper substrate, a copper-clad ceramic lower substrate, a geopolymer bismuth telluride P-type thermoelectric particle column, a geopolymer bismuth telluride N-type thermoelectric particle column and a wire. The geopolymer bismuth telluride P-type thermoelectric particle columns and the geopolymer bismuth telluride N-type thermoelectric particle columns which are connected with each other and distributed in an array mode are arranged between the copper-clad ceramic upper substrate and the copper-clad ceramic lower substrate, and the wires are connected with the geopolymer bismuth telluride N-type thermoelectric particle columns at the head end and the tail end. According to the bridge deck combined with the thermoelectric piece, generated electric energy can be used for self-monitoring and maintenance, and the service life of a bridge is prolonged; the thermoelectric sheet can convert heat absorbed by the bridge deck into electric energy and provide renewable energy, so that energy waste is reduced, energy can be provided for illumination, monitoring and other systems of the bridge, dependence on an external power supply is reduced, maintenance cost is reduced, and multifunctional integration is realized.

The utility model discloses an anti-freezing device for water conservancy and hydropower equipment. The water conservancy and hydropower equipment anti-freezing device comprises a water pipe, a heat insulation pipe is installed outside the water pipe in a sleeving mode, a closed installation cavity is formed between the heat insulation pipe and the water pipe, a heating rod is installed in the installation cavity, anti-freezing liquid is injected into the installation cavity, and a heat insulation layer is installed on the outer ring of the heat insulation pipe. According to the anti-freezing device for the water conservancy and hydropower equipment, the water pipe, the heat insulation pipe and the heating rod are arranged, anti-freezing liquid is injected between the heat insulation pipe and the water pipe, the anti-freezing liquid can be conveniently heated through the heating rod, the water pipe is heated through heat transfer of the anti-freezing liquid, and the water pipe is prevented from being frozen; heat loss can be effectively reduced, and the effects of saving energy and reducing consumption are achieved.

The utility model discloses a multi-layer glass door of a cabinet freezer, and relates to the technical field of freezing equipment. The device comprises an upper frame mechanism and a lower frame mechanism, wherein the lower frame mechanism is arranged on the lower side wall of the upper frame mechanism; a connecting assembly is arranged on the lower side wall of an upper frame body in the upper frame mechanism, a mounting groove is formed in the left side wall of a connecting block in the connecting assembly, the left side wall of the mounting groove is connected with the right side wall of a reset spring, and a glass set is arranged on the inner side wall of the upper frame body. A cleaning assembly is arranged on the inner side wall of a lower frame body in the lower frame mechanism, and a second sealing gasket is installed on the upper side wall of the lower frame body. The sealing performance between the glass group and the upper frame body is better through the first sealing gasket in the upper frame mechanism, the energy consumption of the cabinet freezer is reduced, and the scraping plate and the sliding block in the cleaning assembly in the lower frame mechanism are matched, so that the scraping plate moves on the lowermost layer of glass, frost on the glass is scraped off, and the glass is kept clean.

The utility model provides an oil storage tank breather valve system anti-freezing anti-corrosion auxiliary device which comprises a shell, an air inlet, an air outlet and a heat exchange assembly, the upper end of the shell is provided with an upper scavenging port, a breather valve system is communicated with the shell through the upper scavenging port, the lower end of the shell is provided with a lower scavenging port, and the air inlet is communicated with the air outlet through the lower scavenging port. The oil storage tank is communicated with the shell through the lower scavenging port; the heat exchange assembly is arranged in the shell, and the heat exchange assembly communicates with the air inlet and the air outlet. According to the device, the temperature of gas in the oil storage tank passing through the device is reduced, water vapor in the oil storage tank is reduced, condensation and freezing blockage of the water vapor at the fire-retardant net and the breather valve are avoided, and normal operation of the oil storage tank in a low-temperature environment in winter is ensured. And the inner surface of the shell and the surface of the heat exchange assembly are subjected to surface nickel-base alloy plating treatment, so that the corrosion resistance is improved, and the service life of the device is effectively prolonged.

The invention relates to the technical field of buoy devices, in particular to a floating type marine hydrological observation device which comprises a first cabin, an annular partition plate is fixedly connected to the upper end of the first cabin, a balance mechanism is arranged on the outer side of the annular partition plate, and two sets of symmetrical second fixing plates are fixedly connected to the upper end of the annular partition plate. The ends, close to each other, of the two second fixing plates are jointly and fixedly connected with a second cabin body, the inner side of the second cabin body is fixedly connected with a mounting plate, a cleaning mechanism is mounted at the lower end of the mounting plate, and a ventilation mechanism is mounted below the mounting plate on the inner side of the second cabin body. A maintenance mechanism is installed at the position, close to the middle, of the inner side of the first cabin body, a first sleeve is matched with a cleaning rod, so that a solar cell panel can continuously store light energy under the good maintenance and normal working environment, a discharging pipe outputs fresh water outwards, the outer wall of the solar cell panel is cleaned, and the service life of the solar cell panel is prolonged. And the sliding columns are matched with the guide grooves, so that the ice crushing effect is achieved.