133 results about "Cold climate" patented technology

The invention relates to a low-voltage distribution network non-power-off online ice melting method based on mobile power supply equipment, and the method comprises the following steps: obtaining meteorological information, and line parameter information and line icing information of a low-voltage distribution network; according to the meteorological information, the line parameter information and the line icing information, calculating the minimum ice melting current required by the icing line and the ice melting line power under the minimum ice melting current; and selecting to deploy a first mobile power supply device for transmitting power, or deploying a second mobile power supply device and the first mobile power supply device for transmitting power and absorbing power respectively, so as to carry out ice melting operation based on the ice melting line power. Ice melting can be carried out without power outage, and the supporting capacity of a distribution network line for coping with extremely cold climate is improved.

The present invention discloses a system and method for preventing and controlling frost heave damage in railway subgrades adapted to severe cold climates. This system belongs to the field of seasonal frozen soil engineering technology. The prevention and control system includes several ground-source heat pump devices consisting of heating units, heating pipes, heat collecting pipes, and a detection assembly. Several heating units are arranged at the foot of the subgrade slope along the length of the railway. The heating pipes are laid in the frost heave development layer of the subgrade, and the heat collecting pipes are installed in the stable layers of the foundation on both sides of the subgrade. A heat carrier circulates through the pipeline consisting of the heating pipes, heating units, and heat collecting pipes. Temperature sensors, pressure sensors, and displacement sensors are used to monitor the subgrade freezing temperature, heat carrier temperature, compressor intake and exhaust pressures, and track deformation, respectively. A control assembly receives signals from the detection assembly and controls the operating mode of the heating units. The present invention ensures rapid compressor superheat establishment during startup in severe cold environments and rationally controls the compressor exhaust temperature range and operating mode during normal operation.

The invention discloses a railway roadbed frost heaving disease prevention and control system and method adapting to severe cold climate, and belongs to the technical field of seasonal frozen soil engineering.The prevention and control system comprises a plurality of ground source heat pump devices composed of heating units, heat supply pipes, heat collection pipes and detection assemblies, and the heating units are arranged at the slope toe position of a roadbed in the length direction of a railway; the heat supply pipe is laid on a frost heaving development layer of a roadbed, the heat collecting pipes are arranged on stable layers of the roadbed on the two sides of the roadbed, and the heat-carrying agent circularly flows in a pipeline composed of the heat supply pipe, the heating unit and the heat collecting pipes. A temperature sensor, a pressure sensor and a displacement sensor are used for monitoring the roadbed freezing temperature, the heat-carrying agent temperature, the suction and exhaust pressure of a compressor and the deformation amount of a track; and the control assembly receives a signal of the detection assembly and controls the operation mode of the heating unit. According to the method, rapid establishment of the superheat degree of the compressor in the starting stage in the severe cold environment and reasonable control over the exhaust temperature range and the operation mode of the compressor in the normal operation stage can be guaranteed.

This invention relates to a lightweight concrete facade with enhanced resistance to freeze-thaw cycles, designed to address the challenges of durability, strength, and environmental sustainability in construction. By incorporating marble dust as a partial replacement for cement (10-20% by weight), the concrete achieves significant improvements in performance, including a 30-45% increase in compressive strength and a 20-35% reduction in permeability. These enhancements are attributed to the refined microstructure and reduced porosity provided by the marble dust, which minimizes water infiltration and mitigates freeze-thaw damage. The concrete mix further utilizes optimized water-to-cement ratios, saturated surface dry (SSD) aggregates, and optional additives like calcium dichloride to enhance early strength and resistance to environmental stresses. This innovative solution is ideal for use in building facades, infrastructure, and modular construction, particularly in cold climates. The invention also promotes sustainability by repurposing marble industry waste, reducing cement consumption, and lowering the environmental impact of concrete production.

Heat pump systems that include vapor injection feature are disclosed. Embodiments may include a heat pump system that has two tandem scroll compressors. Each compressor is paired with a control valve that regulates the flow of vapor to the respective compressor. Both the control valves are in fluid communication with a single or common source for vapor injection and to the controller. During operation, the controller dynamically determines how much vapor injection is needed for each of the compressors based on the operational data of the compressors and, optionally, ambient environment data. The controller then operates the two valves to ensure that the right amount of vapor is injected into each compressor.

The utility model discloses a lubricating oil circulation system for a natural gas screw compressor, and belongs to the technical field of compressor lubricating oil circulation. The lubricating oil circulating system comprises a screw compressor and an oil-gas separator, an oil heater is arranged in the oil-gas separator, a three-way temperature control valve is arranged on a lubricating oil discharge pipeline of the oil-gas separator, one output port of the three-way temperature control valve is directly connected to a lubricating oil inlet of the screw compressor, and the other output port of the three-way temperature control valve is directly connected to a lubricating oil outlet of the screw compressor. And the other output port of the three-way temperature control valve is connected with a lubricating oil inlet on the screw compressor through an oil cooler. And through the arrangement of the oil heater, the lubricating oil after oil-gas separation can be heated, so that the oil temperature in the oil-gas separator meets the operation requirement of the screw compressor in a cold climate environment in winter. And the temperature stability of the lubricating oil in the compressor can be further guaranteed through matched use of the three-way temperature control valve and the oil cooler.

A heat pump system is provided. The heat pump system includes a first compressor and a second compressor and a first heat exchanger, a second heat exchanger, and a third heat exchanger. The system further includes a first expansion device, a second expansion device, and a third expansion device. When the system operates in a cascade heating mode, the third heat exchanger is configured to: receive a first portion of refrigerant from the first compressor and a second portion of refrigerant from the second compressor, and provide a first consistent flow of refrigerant to the first compressor and a second consistent flow of refrigerant to the second compressor so as to improve an efficiency of the system.

The invention discloses high-water-content soft soil in-situ preheating, stirring and reinforcing integrated equipment and a construction technology thereof.The integrated equipment comprises a walking platform, a vertical transmission device fixedly installed on the walking platform, a stirring power box fixedly installed on the vertical transmission device and a stirring shaft installed in the stirring power box; and a curing agent management station; a microwave heating assembly and a curing agent conveying pipeline are arranged in the stirring shaft, and the upper end of the curing agent conveying pipeline extends out of the stirring shaft and is connected with a curing agent management station through a hose. Rapid oscillation of water molecules in the soil body is caused by microwaves, temperature rise of pore water in the soil body is achieved, and therefore the soil body is heated, the adverse effect of cold climate conditions on chemical reaction of the curing agent is overcome, the chemical reaction speed between the curing agent and the soil body is increased, and sufficient cementation of the curing agent and the soil body is promoted; and rapid in-situ reinforcement of the high-water-content soft soil is achieved.

Cascaded Cold Climate Heat Pump systems (“CCCHP”) and methods are disclosed. A CCCHP provides efficiency improvements over traditional heat pump systems by utilizing a connected cascaded circuit configuration, to apportion compressor load of a heat pump circuit between two or more circuits. One embodiment that allows the CCCHP to achieve this efficiency improvement includes connecting multiple cold climate heat pump circuits through an intermediary heat exchange unit in a cascaded configuration, where energy is displaced from one refrigerant flow of a circuit into the refrigerant flow of another circuit. This allows each circuit to deploy a smaller compressor that operates within a narrower pressure and temperature range, than it otherwise would if it utilized a single larger compressor in a single circuit operating within a larger pressure range, which has a larger pressure differential between its initial state and its desired state causing inefficiency in the system.

The invention relates to the technical field of waterproof coiled materials, in particular to a preparation method of a high-cold-weather-resistant graphene modified asphalt waterproof coiled material, which comprises the following steps: adding first matrix asphalt, second matrix asphalt, graphene and engine oil, heating and stirring; adding SBS-T6302H, stirring and mixing at a target temperature according to preset stirring parameters, adding rubber powder, and passing through a colloid mill to obtain a mixture; transferring the mixture into a stirring tank, adding fly ash, stirring, detecting the final viscosity, transferring the obtained product into a glue preparation tank, stirring, molding, cooling and sizing to obtain the waterproof coiled material. Determining the colloid particle size and the colloid viscosity in the stirring process, and constructing a uniformity model according to the preset stirring parameters, the colloid particle size, the colloid viscosity and the paddle diameter to determine the dispersion standard coefficient of the modifier; collecting a coiled material surface image to determine defect characteristics so as to adjust a basic cooling temperature; and performing a low-temperature flexible test to determine a test qualification rate, and determining an adjustment mode of the preset stirring parameters according to the dispersion standard coefficient and the test qualification rate.

A snowsuit for children to keep their bodies warm in cold climates. The snowsuit includes wrist cuffs attached to peripheral openings of the arm portions of the snowsuit. Mittens are also detachably attached to the peripheral openings of the arm portions through zippers. Also, the snowsuit includes a pair of socks integrally attached to two leg openings in the pant portion of the snowsuit.

This invention discloses a method, apparatus, device, and storage medium for testing the charging gun insulation function of an electric vehicle. The method involves immersing the electric vehicle in a predetermined low-temperature environment and charging it to a preset SOC range, causing the temperature of the electric vehicle's power battery to drop below a predetermined low-temperature threshold. While maintaining a physical connection between the charging gun and the electric vehicle, the method monitors the temperature change of the power battery, the output parameters of the charging equipment, and the SOC value of the power battery. When the battery temperature drops to the predetermined low-temperature threshold, the charging gun insulation function is triggered, and key parameters during the function's operation are recorded. Based on the changes in key parameters and the SOC value, the energy source of the charging gun insulation function is determined. This comprehensively verifies the reliability of the function's triggering conditions, temperature control performance, and exit logic, ensuring the normal operation of the electric vehicle's battery thermal management function in low-temperature environments and improving the safety and user experience in cold climates.

The invention discloses a few-crack durable first-grade highway pavement structure suitable for a seasonal frozen region, and belongs to the technical field of highway engineering. Comprising an upper surface layer, a middle surface layer, a stress absorption layer, a first cement stabilized macadam double-layer base layer, a second cement stabilized macadam double-layer base layer, a macadam hardcore and a roadbed. However, interlayer tensile strain is concentrated, base layer air shrinkage and reflection cracks are difficult to effectively restrain, and interlayer weakening is easily caused by construction and operation temperature gradient. And the problem that structural forms and parameter ranges considering crack resistance, rut resistance and water stability are incomplete under the conditions of cold weather and large traffic load due to the lack of a system solution of pavement layer combination, stress absorption and construction window coordination in a seasonal frozen area is solved.

The present application provides a kind of bathroom drain valve, including valve shell and valve core, the valve core includes valve inner core and valve outer core;Through the combination design of valve inner core and valve outer core, the valve core can be stably fixed inside the valve shell during use, and displacement will not occur due to water pressure, ensuring that the water outlet is connected to the water pipe, and solving the problem of difficult connection of the water outlet pipe.During the drainage and closing process, the valve outer core and the valve inner core are rotated by the handle nut and the rotating member, and the precise control of the valve core position is realized.During drainage, the first through hole and the second through hole are aligned, and then the water is discharged through the valve core outlet to the water outlet pipe, and the drainage is smooth.During closing, the valve core is completely pushed into the interior, the internal moisture is squeezed out, the possibility of residual moisture is reduced, the drain valve is effectively prevented from being frozen, and the normal use of the drain valve in cold climates such as Europe and America is ensured.Therefore, the bathroom drain valve is convenient to use, easy to operate, smooth to drain, and has the advantages of anti-freezing, etc.

The invention relates to a capsule type oxygen cabin for animal experiments, which adopts a modular structure, comprehensively considers the influence of multiple factors such as temperature, humidity, pressure and oxygen concentration, and also considers the influence of breathing oxygen consumption of experimental animals and the influence of a first / second accommodating part, and on the basis, the first / second accommodating part is centrally controlled through a touch screen; according to the method, the combination of multiple modes can be realized, so that the climate conditions of different regions can be accurately, efficiently and stably simulated, and accurate and scientific guidance can be provided for the research on'high reflection ', the work and life of personnel in high and cold climate regions and the pathology research of hospitals. Besides, the electrical parts are classified and placed in the first accommodating part, the second accommodating part, the touch screen and the bearing part, so that the cabin body can be transparent and visual, and the electrical parts in the first accommodating part and the second accommodating part are convenient to overhaul through detachable connection between the first partition plate and the second partition plate and the first accommodating part and between the first partition plate and the second partition plate and the second accommodating part.

A drain valve comprises a valve shell and a valve core which comprises an inner core and an outer core. In the process of draining and closing, the outer core and the inner core of the valve is rotated through operating the handle nut and a rotating part, so as to realize the accurate control of the position of the valve core. When draining water, the first through hole and the second through hole are aligned, and then water is drained to the water outlet pipe through the outlet of the valve core, so that the drainage is smooth; when closed, the valve core is completely pushed into the interior, and the internal water is squeezed out, thus reducing the possibility of residual water, effectively preventing the drain valve from being frozen, and ensuring the normal use of the drain valve in cold climates.

The invention provides a low-energy-consumption heat supply method and system based on a vacuum flat plate collector, and relates to the technical field of intelligent heat supply. Heat supply environment parameters and indoor temperature are collected in a fixed point mode through a preset monitoring array, the preset monitoring array is deployed in a heat supply circulation network, and a heat demand prediction model is constructed based on the integrated learning principle; and the heat supply environment parameters and the indoor temperature are input into the heat demand prediction model, demand prediction in a future window is carried out, the predicted heat demand is obtained, heat supply parameter optimization analysis is carried out with the purpose of meeting the predicted heat demand, and optimal heat supply parameters are determined to carry out self-adaptive control on a heat collector in the future window. The technical problems of insufficient heat supply and energy waste caused by lack of effective analysis of heat collection equipment in a low-temperature environment in the prior art are solved. The technical effects that the heat supply efficiency is improved, the energy consumption is reduced, the heat supply stability is improved, and efficient heat supply management under the cold climate condition is achieved are achieved.

According to the transparent medium imaging system based on bubble control provided by the invention, the distribution of sunken bubbles in a solidified transparent medium is controlled and imaging is carried out by changing the solidification rate of the liquid transparent medium, so that communication is realized; the device is a brand-new application direction of sunken bubbles, extremely low temperature conditions in cold climate regions are changed into advantages, low-temperature imaging is realized, the difficulty of electronic imaging caused by extremely low temperature is overcome, and the device is high in precision, sensitive in response, simple, reliable and convenient to carry; in addition, the invention belongs to a development technology under natural light, the influence of natural strong light on the electronic development effect is overcome, and meanwhile, light pollution caused by electronic development can be avoided.

The present invention can be included in the technical field of concrete segments (10,10') for wind turbine towers (100) and more specifically for wind turbine towers in cold climates, where ambient temperature is below 5°C. at the same time, the invention relates to a set of a concrete segment and heating means (8), a concrete section (50), a wind turbine, a mould and a method of assembling the wind turbine.

The invention provides a rural domestic sewage treatment system of an enhanced biological filter, which sequentially comprises a pretreatment unit, a biological filter unit, a biological filter unit and a sewage treatment unit along the water flow direction, and the pretreatment unit comprises a grating, a regulating tank and a hydrolysis acidification tank; the core biological treatment unit is communicated with a water outlet of the pretreatment unit, and the core biological treatment unit is formed by connecting a multi-stage anaerobic biological filter and a baffling type micro-aeration biological filter in series; and the deep treatment unit is communicated with the water outlet of the core biological treatment unit and comprises an inclined plate sedimentation tank and a cloth filter tank. The invention aims to overcome the defects of the existing rural domestic sewage treatment technology, particularly a centralized treatment technology, in the aspects of coping with complex water quality and cold climate, decentralized management, cost control and the like. The enhanced biological filter sewage treatment system and the enhanced biological filter sewage treatment method provided by the invention can stably operate under various terrain and climate conditions (especially in high and cold areas and high altitude areas), and are high in treatment efficiency and low in construction and operation cost.

The invention belongs to the technical field of heating ventilation and air conditioning, and relates to an intelligent frost detection control method and system for an air source heat pump system, and the method comprises the steps: S1, collecting refrigerant pressure and temperature data at an inlet and an outlet of an evaporator, and collecting real-time operation condition parameters, environment parameters and meteorological prediction parameters in a future period; s2, preprocessing the collected data and constructing a multi-dimensional state feature vector; s3, obtaining a current frost layer grade index L1; s4, obtaining a frost layer grade trend index L2 in a future time period; s5, a comprehensive frost detection index Sdefault is obtained, and whether defrosting operation is carried out or not is judged based on the comprehensive frost detection index Sdefault; and S6, when defrosting operation needs to be conducted, a defrosting control strategy is dispatched from a preset defrosting strategy library based on the current frost layer grade index L1, the real-time operation working condition parameters and the environment parameters, and defrosting operation is conducted based on the dispatched defrosting control strategy. The annual energy efficiency and the operation reliability of the air source heat pump system under the wet and cold climate can be improved.

The petroleum distribution sampler comprises a driving device, a support is fixedly connected to the position, close to the bottom end, of the outer side of the driving device, a telescopic rotating rod is fixedly connected to the bottom end of the driving device, a collecting mechanism is movably connected to the bottom end of the telescopic rotating rod, a circular opening is formed in the center of the middle of the support, and a sleeve penetrates through the opening; a fixing ring frame is fixedly connected to the outer side of the top end of the sleeve, an air supply device is arranged on the left side of the fixing ring frame and fixedly connected with the support, the collecting mechanism comprises a collecting drill pipe, and the inner side of the top end of the collecting drill pipe is movably connected with the bottom end of a telescopic rotating rod. The invention relates to the technical field of oil exploitation, and has the characteristics that the practicability is high, fluid and non-fluid samples can be classified, and the influence of cold climate is relatively small.

This invention belongs to the field of adhesive technology. This invention provides a paste-like adhesive for exterior walls in extremely cold climates and its preparation method. The paste-like adhesive for exterior walls in extremely cold climates comprises, by weight, the following components: 35-37 parts polyacrylic acid emulsion, 14-16 parts quartz sand, 45-48 parts granulated blast furnace slag powder, 1.5-1.7 parts aluminum sulfate, 0.25-0.35 parts dispersant, and 2.5-3 parts methyl methacrylate-hydroxypropyl methylcellulose graft copolymer. This invention can effectively extend the construction window period, reducing the decrease in tensile bond strength of the prepared adhesive during construction.

The utility model discloses a pavement repairing cabin suitable for being used in winter, which relates to the field of airport construction and comprises a repairing cabin body, a plurality of sleeves and a plurality of ceiling supports arranged in parallel, the bottoms of the sleeves are inserted into the bottom frame, and the ceiling supports are arranged on the bottom frame. The tops of the sleeves arranged on the same width along the repairing cabin body are connected with the same ceiling support in an inserted mode, and heat insulation layers are arranged between the adjacent sleeves and between the adjacent ceiling supports. The lighting structure is arranged at the top of the repairing cabin body and connected with the ceiling support; the heating structure is arranged in the repairing cabin body; the temperature measuring structures are respectively arranged inside and outside the repairing cabin body; the control unit is connected with the temperature measuring structure and the heating structure; according to the pavement repairing cabin, a heating structure is adopted, an environment suitable for repairing material maintenance is created in the cabin, and it is ensured that the pavement repairing task can be completed with high quality even under the severe cold weather condition.

The utility model provides a backpack assembled data acquisition instrument heat preservation box suitable for severe cold climate, which belongs to the technical field of frigid zone environmental engineering and comprises a heat preservation box, a connecting rod and a stabilizing frame. The heat preservation box is composed of a shell coating, a protective shell, a heat preservation layer, a heating layer, a heat conduction layer, a buffer layer, a collection core and a reserved position in sequence from outside to inside. The connecting rod is of a hollow structure made of a light carbon fiber material and is used for connecting the heat preservation box and the stabilizing frame, and the hollow structure can be used for arranging a circuit; the stabilizing frame is of a schoolbag structure, the heat preservation box is supported through the connecting rod at a data acquisition place, and the heat preservation box and the connecting rod can be stored before and after acquisition; according to the design and integration scheme of the utility model, the reliability of data acquisition is improved, the limitation of climate and environment is broken through, and more comprehensive information support is provided for urban planning and meteorological monitoring.

The invention belongs to the technical field of commercial vehicle body corrosion prevention, and particularly relates to a vehicle body coating method and a coating structure used in the low-temperature frigid climate. The coating method comprises the following steps that a vehicle body is pretreated, and an electrophoresis auxiliary electrode is additionally arranged in the vehicle body; performing electrophoresis on the vehicle body to form an electrophoresis layer; spraying protective layers on the bottom of the vehicle body and the inner sides of the skirts; after the automobile body is polished, floating coat is sprayed to form a floating coat layer; after the automobile body is polished, finish paint is sprayed to form a finish paint layer; and hydrophobic paint is sprayed on the outer surface of the skirt of the vehicle body to form a hydrophobic layer. The problem that the anti-corrosion effect of a vehicle body is poor in the cold weather is solved. The protection layer covers the bottom of the vehicle body and the inner side of the skirt edge, the protection effect of the bottom of the vehicle is improved, the problem that the folded edge of the vehicle bottom is prone to rusting is solved, meanwhile, the hydrophobic layer sprayed outside the finish paint layer can make the part not prone to freezing through hydrophobicity, frozen snow on the skirt edge outside the vehicle body in the ice and snow weather environment is reduced, and the service life of the vehicle is prolonged. The corrosion of the snow-melting agent to the skirt edge is reduced.

The utility model discloses a heatable dust-sticking paper roll dust removing device which comprises a storage box, a first conveying mechanism arranged in the storage box, a heating assembly connected with the storage box, a second conveying mechanism installed on the heating assembly and a pressing assembly connected with the other side of the heating assembly. The base is arranged at the bottom of the heating box, the fixing plates are arranged on the two sides of the base, and the electric heating screw pipes are arranged on the fixing plates; the first conveying mechanism comprises a fixing rod fixed in the storage box and a supporting shaft arranged in the storage box. The second conveying mechanism comprises a first conveying shaft arranged in the heating box and a second conveying shaft arranged in the heating box. The pressing assembly comprises a goods outlet box connected with the heating box and a pressing shaft installed in the goods outlet box. According to the utility model, the electric heating solenoid is arranged in the heating box to heat the device, so that the device is suitable for severe cold climate.

The invention provides a lithium ion battery low-temperature wake-up system and method in extremely cold climate, and relates to the technical field of lithium battery low-temperature thermal management, the system comprises a pilot battery, a battery pack, a heating film, an MOSFET tube, a temperature sensor, a first relay, a second relay, a signal acquisition unit, a current sensor and a heating control unit; the system can heat the battery pack without depending on an external power supply under a low-temperature condition, so that a good working temperature of the battery is achieved, the low-temperature sleeping battery is awakened, the performance of the battery is activated, and the problems that the low-temperature performance of the battery is poor and the battery is difficult to apply are solved.

The application discloses a kind of drinking water defluorination purification equipment, especially applicable to the treatment of high-fluorine groundwater in Inner Mongolia region.The equipment includes main tank body, heat preservation system, composite adsorption layer, water distribution system and regeneration system;Composite adsorption layer includes first activated alumina adsorption layer, modified zeolite molecular sieve layer and second activated alumina adsorption layer, forming gradient defluorination structure.Heat preservation system is built-in circulating liquid to cope with extremely cold climate in Inner Mongolia region in winter.Water distribution system includes upper water distributor and lower water distributor to ensure that raw water and defluorination medium are in full contact.Regeneration system is connected with main tank body through pipeline to realize in-situ regeneration of adsorption medium.The application solves the problem of low defluorination efficiency of existing equipment in low temperature environment through multilayer composite adsorption and cold resistance design, and the fluoride concentration of effluent is stably lower than 0.8 mg / L, which is suitable for decentralized water supply projects in rural and pastoral areas of Inner Mongolia.

The utility model relates to the technical field of heating equipment, concretely is severe cold climate intelligent control multi -energy complementary coupling heating system, include: heat storage water tank, heat storage water tank is equipped with at least two groups of heat exchange coil, and heat exchange coil connects different heat source, water source heat pump, water source heat pump primary side is connected with heat storage water tank, heat storage water tank can directly connect heating end, the utility model discloses, through the integration of at least two groups of staggered arrangement heat exchange coil in the water tank, has realized the direct coupling and complementation of multiple heat sources in the same heat storage unit on the hardware structure, has improved the energy comprehensive utilization efficiency greatly. Through setting up water source heat pump and straight through bypass parallel with water tank main pipe, make the system can according to water temperature flexible selection " high -efficient direct supply " or " waste heat upgrading " two kinds of operation mode, guaranteeing the continuous stable heat supply under the severe cold climate, significantly reduce the waste of low -grade heat, realize the heating purpose of high -efficient, stable, energy -conserving.