698 results about "Ice melt" patented technology

The invention discloses a low-frequency ice melting device for a distribution network power transmission line. A power supply module receives electric energy from a transformer and processes the electric energy; the rectifying unit is used for converting power frequency alternating current into direct current; the inversion unit is used for converting direct current into low-frequency alternating current; the information acquisition unit is used for acquiring the line temperature and the icing thickness on the icing line and feeding back the line temperature and the icing thickness to the control unit; the control unit is used for receiving the electric energy, calculating output power and output current according to the parameter information, the line temperature and the icing thickness, generating an ice melting instruction, executing the ice melting instruction and adjusting the output power and the output current; and the cooperative ice-melting switch is controlled according to the ice-melting execution instruction, wherein the inversion unit outputs low-frequency alternating current to the ice-coated line. Low-frequency alternating current is applied to a power transmission line of a distribution network, the ice melting distance is increased, three-phase simultaneous symmetric ice melting is achieved, the asymmetric pole falling phenomenon is avoided, frequent switching is avoided, and the working efficiency is greatly improved.

The invention relates to the technical field of tunnel disaster identification, in particular to a tunnel portal icing disaster identification and prediction method based on a multi-modal data fusion technology. According to the technical scheme, the method comprises the steps of multi-source data acquisition, heterogeneous data processing, feature level fusion, disaster recognition, space-time prediction and dynamic early warning. According to the invention, a multi-modal sensor is deployed to collect tunnel portal temperature, space structure and environmental parameters, intelligent processing and multi-stage feature fusion are carried out, ice layer distribution identification, icing trend detection and time-space prediction are realized by using a deep network, an ice melting device is dynamically activated in combination with a graded early warning mechanism, and vehicle early warning is linked. A sensing, analysis, prediction, disposal and calibration closed loop is formed, the accuracy of ice coagulation disaster detection, the prospective performance of prediction and the intelligence of disposal are remarkably improved, and the tunnel traffic safety and the long-term robustness of the system are guaranteed.

The invention discloses a power transmission line icing state monitoring and ultrasonic deicing system and method based on online power taking, and belongs to the technical field of power equipment. The problems that potential safety hazards are caused by icing of a power transmission line and a traditional deicing mode is high in cost and low in efficiency are solved. By integrating an online power taking module, an icing state monitoring module, an ultrasonic deicing module, a hot ice melting module and an intelligent management module, real-time monitoring and intelligent deicing of icing of the power transmission line are realized; wherein the ultrasonic deicing module is used for removing an ice layer through ultrasonic vibration, and the hot ice melting module is used as an auxiliary means for melting the ice layer through resistance heating when necessary; the system controls all the modules to work coordinately through the intelligent management module, and energy consumption and cost are reduced while efficient deicing is ensured; remote monitoring and fault diagnosis are achieved, the line state is mastered in real time, response processing is conducted in time, the operation safety and stability of the power transmission line are improved, power outage accidents and economic losses caused by icing are reduced, and the intelligent operation and maintenance level of a power grid is enhanced.

The invention relates to the field of super-hydrophobic materials, in particular to a basalt fiber composite material as well as a preparation method and application thereof. According to the composite fabric material provided by the invention, a multistage micro-nano rough surface of the MoS2 nanoflowers and the silver nanoparticles is constructed on the fiber substrate, so that not only is super-hydrophobic self-cleaning realized, but also the anti-icing performance is relatively high, and particularly, rapid heating is realized by combining broadband absorption of the MoS2 nanoflowers and a local surface plasma resonance effect of the silver nanoparticles; and meanwhile, the silver nanoparticles accelerate heat conduction, so that excellent ice melting capability is obtained. The high conductivity of the silver nanoparticles constructs a conductive path, and the layered structure of MoS2 triggers interface polarization, so that the electromagnetic shielding effectiveness of the X wave band is improved. The dual antibacterial mechanism of the MoS2 nanoflowers and the silver nanoparticles also realizes broad-spectrum efficient antibiosis, the preparation method is green and environment-friendly, the cost is low, and the requirements of complex scenes such as wearable electronic equipment, medical protection, polar region protection and national defense can be met.

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 relates to a medium-voltage expansion ice melting device and an ice melting expansion system. The medium-voltage expansion ice melting device comprises an ice melting transformer and a reactive compensation unit, the primary side of the ice-melting transformer is electrically connected with the power supply end of the medium-voltage power supply, and the secondary side of the ice-melting transformer and the input end of the reactive compensation unit are electrically connected with the ice-melting output end; wherein the ice melting transformer is a double-winding ice melting transformer of which the primary side is subjected to on-load voltage regulation and the secondary side is subjected to no-load gear regulation, and the medium-voltage power supply comprises a medium-voltage emergency power supply vehicle or a power grid; the deicing transformer is used for adjusting the alternating current of the medium-voltage power supply into the adjustable alternating current of the line section to be deiced, and the reactive compensation unit is used for regulating and controlling the reactive compensation current and the reactive compensation power. According to the technical scheme of the invention, the medium-voltage emergency generator car can be fully utilized to quickly expand the ice melting function of the medium-voltage emergency generator car, and meanwhile, the ice melting technical equipment of power grid power supply can be considered, and the economy of distribution network ice melting is improved.

The invention relates to the technical field of power grid deicing, in particular to an alternating current short circuit ice melting control method and an ice melting distribution transformer. The invention discloses a distribution transformer with voltage reduction and ice melting dual functions, an ice melting control system and a control method thereof. The transformer is provided with two groups of low-voltage output ends which are respectively used for power distribution, power supply and ice melting operation; the ice melting control system comprises a local intelligent control box and a far-end communication control box, and adopts a deep reinforcement learning model to calculate an optimal ice melting power gear and ice melting time; according to the control method, environment parameters and equipment parameters are obtained, cooperative control of the boundary switch, the ice melting switch, the protection switch and the short circuit switch is combined, and accurate adjustment of the ice melting process is achieved. The system realizes a one-key ice melting function, has the characteristics of simple operation, high ice melting efficiency, remote control and the like, remarkably improves the intelligent level, safety and reliability of power grid ice melting operation, and provides an innovative solution for anti-ice management of a power system.

The invention relates to the technical field of electric power icing prediction, and discloses an electric power line icing prediction method and system, and the method comprises the steps: obtaining electric power data and meteorological data, and carrying out the data preprocessing; and extracting a first feature of the line icing to obtain a second feature and a third feature of the line icing, constructing a line icing prediction model through a machine learning algorithm, predicting the icing condition of the power line in real time, and outputting a line icing thickness prediction result. According to the method, physical prediction and a machine learning model are fused, multi-dimensional information such as weather, line states and historical data is combined, the icing thickness prediction precision is remarkably improved, real-time monitoring and dynamic early warning can be achieved, minute-level icing thickness updating and risk grading are supported, ice melting or dispatching instructions are triggered in time, and the ice melting efficiency is improved. The method still has relatively high robustness in complex environments such as mountainous areas, high altitudes and extreme weather; the manual inspection frequency can be reduced, and the operation and maintenance cost is reduced.

The invention provides a mountain wind power plant fan icing intelligent forecasting method and system, and relates to the field of fan icing forecasting. The method comprises the following steps: determining a meteorological element threshold value of a fan in an icing scene and a meteorological element threshold value of the fan in an ice melting scene; establishing a temperature-wind speed-power dynamic response model; constructing a three-layer linkage model for fan icing prediction; the first-layer model judges an icing condition in a preset range around the station based on a meteorological element threshold value in an icing scene; the second-layer model is started before the first-layer model judges the icing condition, and a convection radiation ice melting scheme is coupled when the meteorological condition reaches a meteorological element threshold value in an ice melting scene; and on the premise of the second-layer model, the third-layer model timely triggers graded early warning based on a temperature-wind speed-power dynamic response model, and outputs a forecasting and early warning result. According to the method, the regional adaptability and precision of fan icing forecasting are improved, risk level early warning is optimized, and about 10% of power generation loss of a wind power plant is reduced.

The invention relates to the technical field of electrical digital data processing, and discloses a train ice melting simulation optimization method of an electromagnetic thermal coupling model fused with a deep learning method, which comprises the following steps of: inputting a geometric representation tensor and a physical working condition parameter vector containing an electromagnetic excitation frequency and a reference environment temperature into a feature mapping neural network; outputting a dual-channel space source item tensor containing basic heat source power density and a heat source to temperature change sensitivity distribution matrix through nonlinear convolution operation; constructing a heat conduction discrete numerical value evolution operator configured with an active item linear correction interface; time stepping operation is executed according to the heat conduction time scale, a basic heat source is corrected in real time through the Hadamard product of a sensitivity distribution matrix and temperature deviation, and an operator is substituted for solution. On the premise that electromagnetic-thermal nonlinear coupling characteristics are reserved, decoupling of the time scale is achieved, and the calculation efficiency in high-frequency physical field simulation is effectively improved.

According to the technical scheme, the power transmission line comprises a plurality of lines, and the method comprises the following steps: calculating the ice thickness prediction value of each ice melting section based on the real-time ice thickness prediction value of each ice melting section, the bearing capacity of a tower, the tension and crossing distance of a ground wire, and the load of a hardware fitting and an insulator; calculating the real-time icing safety degree of each ice melting section; sequencing all the ice melting sections according to the real-time icing safety degree of each ice melting section to form an ice melting sequence set, and selecting the ice melting section with the highest ice melting urgency degree according to the ice melting sequence set to execute ice melting operation; in the ice melting process, ice melting current is intelligently regulated and controlled according to real-time monitoring data, a fastest ice melting mode or a common ice melting mode is selected according to an external instruction, and three strategies of aggressive, balanced and conservative are further subdivided in different modes; according to the invention, efficient and safe ice melting operation can be realized under complex working conditions, and the operation reliability and the ice melting efficiency of the power transmission line are remarkably improved.

The invention discloses a concrete model under salt freezing circulation, a construction method and a construction method of a damage evolution model, and a salt freezing circulation process is simplified into processes of continuous accumulation of sulfate crystals in pores, water condensation into ice, and repeated expansion and contraction of ice melting into water. The process of continuous accumulation of pore sulfate crystals in the sample concrete model and the process of mortar reduction and porosity increase in the sample concrete model are simulated, model parameters are adjusted, so that the salt freezing process of the sample conforms to the actual situation, and the service life of concrete is predicted through the sample concrete model. A specific time node reaching a failure standard is accurately predicted; the invention discloses a concrete damage evolution model based on the combination of continuous damage mechanics and a crack propagation theory, and aims to solve the problem that a traditional concrete damage model cannot accurately predict concrete damage evolution in a salt freezing circulation environment, and particularly, the long-term influence of the salt freezing environment on a concrete structure is lack of accurate quantitative analysis.

The invention discloses a method and a system for optimizing an intelligent ice melting device of an ultra-high voltage transmission line, which are applied to the field of transmission line maintenance, and comprise the following steps of: analyzing and processing state data of an iced line to obtain time-domain dynamic data reflecting ice layer thickness and wire temperature change, extracting harmonic components from the time-domain dynamic data, and calculating the ice layer thickness and the wire temperature change according to the harmonic components. Obtaining ice layer state frequency domain distribution data according to the harmonic component, and determining an ice layer state change trend according to the ice layer state frequency domain distribution data; constructing a power transmission line harmonic state space model, and reconstructing the optimized power transmission line harmonic state space model to obtain an ice layer impedance dynamic prediction model; in the actual ice melting process, the operation parameters of the ice melting device are dynamically optimized and adjusted according to the ice layer impedance dynamic prediction model. According to the method, the dynamic characteristics of the ice layer state can be accurately extracted, the ice melting efficiency and accuracy are improved, excessive ice melting or insufficient ice melting is avoided, and the operation safety of the power transmission line is enhanced.

The invention discloses a super-hydrophobic road ice-inhibiting coating based on a photothermal effect and nano modified particles and a preparation method of the super-hydrophobic road ice-inhibiting coating. The preparation method comprises the following steps: introducing silane modified nano silicon dioxide (SiO2) and titanium dioxide (TiO2) particles into a polyaniline solution, and preparing the composite super-hydrophobic powder through a chemical oxidation polymerization method. The preparation method comprises the following steps: firstly, modifying the surfaces of SiO2 and TiO2 nanoparticles by adopting a silane coupling agent, and endowing the SiO2 and TiO2 nanoparticles with low surface energy and hydrophobic property; and then adding the modified nano-particles into an aniline monomer solution, reacting with doped acid and an oxidizing agent, so that polyaniline molecules are subjected to in-situ polymerization on the surfaces of the particles, and the composite super-hydrophobic powder with a micro-nano structure is formed. The obtained composite material has excellent photothermal conversion performance and super-hydrophobic performance at the same time, and the efficient photothermal material heat absorption ice melting effect and the synergistic ice restraining effect of the photothermal material and the super-hydrophobic material can be achieved. Compared with a traditional ice-inhibiting coating, the coating disclosed by the invention shows stronger ice-resisting capability in a low-temperature and high-humidity environment, has good durability, mechanical stability and environmental protection property, and is suitable for the field of ice prevention and ice inhibition in cold regions such as roads, bridges, airport runways and the like.

The invention, which belongs to the technical field of power transmission line deicing, discloses an ice and snow disaster-resistant power transmission line adaptive ice melting device comprising an annular body of which the inner diameter is adaptive to the outer diameter of a power transmission line and which is used for being fixed on the power transmission line in a surrounding manner; the distributed temperature sensor array is uniformly embedded in the inner surface of the annular body and is used for monitoring the surface temperature distribution of the power transmission line in real time; the heating element layer covers the periphery of the annular body, comprises at least two conductive film layers which are insulated from each other, and is used for generating Joule heat in gradient distribution; and the control module is arranged in the waterproof cavity at the side part of the annular body, is electrically connected with the temperature sensor array and the heating element layer, and is used for dynamically adjusting heating parameters according to the temperature data. When temperature values of more than three adjacent sensors are detected to be lower than a freezing point threshold value, a gradient heating program is started, the current density of each conductive film layer is dynamically adjusted according to an icing thickness calculation model, and melting and falling of an ice layer are realized.

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 invention discloses a distribution network low-voltage extension type direct-current ice melting method and an ice melting management system, and relates to the field of disaster prevention and reduction of an electric power system, and the method comprises the steps: obtaining an electrical characteristic signal, an icing thickness value and weather forecast data of each target line; calculating power loss distribution of each target line, and dividing the target line into a plurality of electron supply zones; inputting the icing thickness value and the weather forecast data into an icing prediction model to obtain an icing development trend; carrying out correlation operation on the icing development trend and the corresponding power loss distribution to obtain an ice melting priority and an ice melting current value; generating a power supply execution sequence and a direct-current power supply output parameter; and generating an ice melting execution scheme based on the power supply execution sequence and the DC power supply output parameters, and implementing ice melting power supply according to the ice melting execution scheme and the power supply execution sequence. According to the invention, ice melting planning can be carried out, and electric energy waste is avoided.

The invention relates to the technical field of power electronics, in particular to a DC deicing current oscillation suppression method and system, and the method comprises the steps: obtaining an equivalent inductance value and an equivalent capacitance value according to the operation environment data of a DC deicing system; according to the equivalent inductance value and the equivalent capacitance value, when the current state of the direct current deicing system does not meet the current oscillation suppression condition, generating a valve group control optimization strategy based on the equivalent inductance value and the operation environment data; extracting current oscillation characteristic data according to the current waveform data and determining the ice melting efficiency according to the current oscillation characteristic data in the process of controlling the direct current ice melting system to execute ice melting operation through the valve group control optimization strategy; and when the ice melting efficiency does not reach the standard, optimizing the valve group control optimization strategy by using the current oscillation characteristic data and a multi-objective optimization algorithm, and outputting an optimal ice melting control strategy. By dynamically optimizing the valve group control strategy, the ice melting efficiency is considered while the current oscillation is suppressed, and the stable operation of the direct current ice melting system is ensured.

The invention relates to a network security protection method and system for an ice melting remote control system. The method comprises the following steps: generating a corresponding ice melting control instruction through a production control safety area module; signing and encrypting the ice melting control instruction, and sending the encrypted instruction to the safety protection module; performing encryption and signature verification operation on the encrypted instruction through a security protection module to obtain a decrypted ice melting control instruction; executing the ice melting control instruction through an ice melting controller in the ice melting device module, and controlling an ice melting device to perform ice melting operation; the operation state and environmental parameters of the terminal equipment are monitored in real time, a sensor in the ice melting device module is triggered to monitor operation data of the ice melting device, and the operation data are uploaded to the safety protection module; performing encryption processing on the operation data through the security protection module to obtain encrypted operation data; and uploading the encrypted operation data to a production control safety area module. By adopting the method, the safety of ice melting remote control can be improved.

The invention relates to the technical field of road ice melting, and discloses a road ice melting implementation system and method. The system comprises a meteorological monitoring platform, a snow-melting agent spraying platform and a management and control platform, the method comprises the following steps: firstly, collecting meteorological data and monitoring a road surface state to obtain an initial road ice melting data set, and then carrying out anomaly detection and filling missing data; establishing a road ice melting prediction model based on the neural network, predicting whether the road is iced or not, and outputting a road icing result; then ice melting work is carried out, an enhanced hawk optimization algorithm is introduced to optimize spraying parameters in the ice melting work, and a road ice melting implementation strategy is generated; and finally, adjusting a road ice melting implementation strategy, and establishing a snow melting environment coupling model and an alarm mechanism. By analyzing and processing the road ice melting data, the purpose of implementing road ice melting is achieved, and the method is objective and accurate.

The control device comprises a control module, an ice melting power supply module, a boundary switch, a short circuit switch and an ice melting switch, the boundary switch, the short circuit switch, the ice melting switch and a protection switch are arranged on a high-voltage cable, and the control module sequentially drives the boundary switch, the short circuit switch, the ice melting switch and the protection switch to execute state switching through action instructions. The conduction control of the ice melting loop is realized; the control module integrates a finite element algorithm function, collects current, voltage and temperature distribution parameters in an ice melting loop in real time, and dynamically corrects ice melting current parameters through three-dimensional electromagnetic-thermal coupling field simulation; setting a parametric modeling unit, and calculating an optimal voltage regulation gear based on a heat balance equation and a Joule heat effect to realize adaptive voltage regulation; the demarcation switch, the short circuit switch and the ice melting switch are arranged, the effect of cable short circuit heating ice melting is achieved by sequentially controlling the on-off states of all the switches, finite element real-time simulation and parameterization voltage regulation decision are combined, and the cable ice melting efficiency, reliability and safety are remarkably improved.

The invention discloses a ventilator shell anti-icing device and an installation method, and relates to the technical field of air blowers. An anti-icing device for a ventilator shell comprises a heating module, a supporting module and an emptying module. The heating module comprises a coil pipe, and heating fluid is arranged in the coil pipe; the coil pipe is pressed and connected to the bottom position of the outer side wall of the fan shell through the supporting module; the emptying module comprises an emptying pipe, one end of the emptying pipe is connected with the fan shell, and a valve body is installed at the other end of the emptying pipe. The emptying pipe is communicated with the bottom of the inner cavity of the fan shell. The supporting module enables the heating module to be installed at the bottom of the outer side wall of the fan shell, the heating module heats water in the fan shell and an inner cavity of the fan shell, liquid water is prevented from being frozen into ice or solid ice is prevented from being melted into liquid water, and then the liquid water is discharged out of the fan through the emptying module, so that the anti-freezing effect is achieved, and the service life of the fan is prolonged. And the operation safety is improved.

The invention discloses an ice melting and storing device outside a spiral coil pipe, and belongs to the technical field of ice melting devices. Comprising a cylindrical ice storage tank, a water inlet header pipe is arranged on the upper portion, a water outlet header pipe is arranged on the lower portion, the water inlet header pipe is connected with a water distributor, and the water outlet header pipe is connected with a water collector; the spiral heat exchange coil pipe is arranged in the cylindrical ice storage tank; the air blowing assembly is arranged at the bottom of the cylindrical ice storage tank, and the air blowing assembly is used for blowing air flow into the cylindrical ice storage tank; the water collector and the air blowing assembly are two concentric annular channels and are integrally arranged at the bottom of the cylindrical ice storage tank, a plurality of first communicating holes are formed in the water collector, and a plurality of second communicating holes are formed in the air blowing assembly. By means of the device, return water with the high temperature is discharged into the cylindrical ice storage tank again, meanwhile, air flow is blown into the cylindrical ice storage tank through the air blowing assembly, water flow in the cylindrical ice storage tank is disturbed, and melting of ice bodies is promoted.

The invention relates to the technical field of electric power ice melting, in particular to an electric power ice melting intelligent control method and system.The method comprises the steps that when it is detected that the current external environment meets the grounding knife switch opening condition according to meteorological parameters of a target line of an electric power ice melting system, a grounding opening instruction is generated; based on the grounding opening instruction and the line equipment state parameters, determining an optimal opening time point of the phase selection disconnecting link; an opening time sequence rule is generated according to the optimal opening time point, and a phase selection disconnecting link is controlled to execute opening operation according to the opening time sequence rule; determining a priority coefficient of the short circuit closing instruction; in the process of controlling the short-circuit disconnecting link to execute the closing operation according to the priority coefficient, if the ground wire and the wire are successfully connected in series, verifying the actual ice melting operation sequence to obtain an ice melting operation verification result; and based on the verification result of the ice melting operation, generating an ice melting operation optimization sequence by using a decision tree pruning algorithm. According to the invention, intelligent and accurate control of the electric power ice melting process is realized, and the influence of current oscillation on the system is effectively reduced.

The invention discloses a preparation method of a composite micro-groove super-hydrophobic low-ice-adhesion photo-thermal film. The preparation method comprises the following steps: (1) constructing a low-elasticity-modulus photo-thermal composite sponge substrate through a solvothermal method; (2) uniformly coating the surface of a substrate with a polydimethylsiloxane (PDMS) precursor solution by adopting an aerosol-assisted deposition technology, and carrying out thermocuring to form a functional composite interface layer; and (3) constructing a multi-stage scallop surface-imitating micro-nano groove composite structure on the surface of the interface layer by using a femtosecond laser micro-nano processing technology. The prepared film has super-hydrophobicity, the surface of the film is in a Cassie-Baxter wetting state with a 164-degree contact angle and a 1-degree rolling angle, and the film has a surface self-cleaning function. Under the icing condition, the adhesion strength of an ice layer of the system is obviously reduced to 2.57 kPa, the static delay icing time is effectively prolonged to 1587 s, and the system has the photo-thermal response characteristic and can realize rapid icing ablation under the standard solar irradiance; the preparation method has the characteristics of high process controllability, environment friendliness and the like, and is suitable for large-scale continuous production.

The invention relates to the field of super-cooled water ice making, in particular to a super-cooled water ice making system capable of rapidly melting ice and an operation method of the super-cooled water ice making system. The ice making system comprises a supercooled water heat exchanger, a compressor, a condenser and a throttling device. The supercooled water heat exchanger internally comprises a coaxial spiral three-medium heat exchanger which comprises a first fluid channel and a second fluid channel. The first fluid channel is a tubular channel; the second fluid channel is a spiral channel wound on the first fluid channel and is thermally coupled with the first fluid channel; the supercooled water heat exchanger, the compressor, the condenser and the throttling device are communicated through a first refrigerant loop. When supercooled water is prepared, the first fluid channel exchanges heat with a refrigerant in a shell pass of the supercooled water heat exchanger to prepare low-temperature supercooled water; in the ice melting state, exhaust of the compressor of the unit enters the second fluid channel and exchanges heat with the first fluid channel to achieve ice melting. The supercooled water ice-making system provided by the invention can realize quick ice melting, and ensures stable, efficient and continuous preparation of supercooled water.

The invention belongs to the technical field of intelligent operation and maintenance of wind power generation equipment, and particularly relates to a wind turbine blade predictive anti-icing system and method based on digital twinning, and the system comprises a digital twinning prediction module which comprises a three-dimensional model construction unit and an AI prediction algorithm unit. The three-dimensional model construction unit is used for constructing a three-dimensional digital twinborn model of the wind turbine blade; the AI prediction algorithm unit is used for performing icing risk prediction based on the three-dimensional digital twinborn model and meteorological data; the photo-thermal collaborative anti-icing execution module comprises a blade posture adjusting unit and a transparent electric heating glass layer unit, and the transparent electric heating glass layer unit is laid on the surface of the wind turbine blade; according to the invention, a high-risk area is accurately identified through a digital twinborn model, blade yaw and a transparent electric heating glass layer are linked to realize photo-thermal synergistic anti-icing, formation of an ice layer is inhibited from the source, and the passive ice melting demand is reduced.

The invention relates to the technical field of road deicing, in particular to a road surface ice melting system. The road surface ice melting system comprises a temperature measuring optical fiber, a DTS host, a control end and a plurality of ice melting devices. The temperature measuring optical fibers are laid on two sides of the pavement base layer; the plurality of ice melting devices are arranged on the two sides of the road surface; the temperature measuring optical fiber is divided into a plurality of temperature measuring sections, and the plurality of temperature measuring sections are in one-to-one correspondence with the plurality of ice melting devices; the DTS host can obtain the temperature values detected by the multiple temperature measuring sections in real time, and when the temperature values, obtained by the DTS host, of one or more temperature measuring sections reach the icing temperature threshold value, the control end controls the ice melting device corresponding to the temperature measuring section reaching the icing temperature threshold value to be started, so that hot water is sprayed to the road surface through the spraying head. According to the road surface ice melting system, the problems that an existing system for monitoring road surface icing has great misjudgment performance, if an organic snow melting agent is sprayed, the manufacturing cost is too high, and spraying of inorganic snow melting agents causes corrosive damage to a road are solved.

The invention discloses a subway flywheel energy storage system with a direct-current ice melting function, which comprises a medium-voltage looped network, a contact network, a running rail, a positive bus, a negative bus, a subway rectifier module and a flywheel energy storage module, the subway rectification module is connected with the positive and negative buses. The positive bus is connected with a contact network, and the negative bus is connected with a walking rail; the flywheel energy storage module is connected with the positive bus, the negative bus and the walking rail. The flywheel energy storage module is further connected with the contact net through a circuit breaker QF, and the contact net is connected with the walking rail through a far-end short-circuit switch K3. The invention further discloses an ice melting and energy storage method applying the subway flywheel energy storage system with the direct-current ice melting function. The device has two functions of direct-current ice melting and flywheel energy storage charging and discharging, time division multiplexing is controlled by the two functions through a switch, efficient utilization of equipment is achieved, and the cost performance is improved.

The invention discloses a low-temperature cold trap water removal device which comprises more than two water removal channels which are connected in parallel; each water removal channel comprises a refrigeration water removal gas path and an ice melting purging gas path which are connected in series; each refrigeration and water removal gas path is also connected with an inlet of a dry gas collection gas path, and an outlet of the dry gas collection gas path is used for being connected with an analyzer; and each water removal channel is connected with a controller, and the controller is used for controlling the refrigeration water removal gas paths and the ice melting purging gas paths of the different water removal channels to operate in a staggered mode. According to the application, moisture in the gas to be dewatered can be effectively removed, frost can be timely removed, and related phenomena such as relatively large dead volume of the cold trap can be avoided.