53results about How to "Good ice melting effect" patented technology

The invention provides a salt-storage sustained-release snow-melt deicer and a preparation method thereof. The method comprises the following steps: firstly, respectively preparing an anticoagulationchloride saturated solution and a nano-silicon dioxide modified diatomite suspension; then, adding the anticoagulation chloride saturated solution into the nano-silicon dioxide modified diatomite suspension, stirring, filtering in vacuum, drying and grinding to obtain sustained-release inorganic salt; preparing a polymer monomer solution, sequentially adding the sustained-release inorganic salt, isopropyl alcohol or propylene glycol monomethyl ether solution into a flask, putting the flask in an oil bath, and uniformly stirring, adding the polymer monomer solution and a mixed solution of KH570and gAIBN, keeping on stirring, reducing the temperature, adding triethylamine into the flask, stirring, and adding water to obtain the salt-storage sustained-release snow-melt deicer. According to the salt-storage sustained-release snow-melt deicer, snow-melt substances are not limited by temperature-control molecules, and have long release time and relatively high ice melting capacity.

The invention discloses a preparation method of an ice melting agent for transformer substations. The method comprises the following steps: 1) in the stirring state, sequentially adding 26-34 wt% of propanediol and 46-52 wt% of diethylene glycol into a container, and sufficiently dissolving by continuing stirring; 2) in the stirring state, sequentially adding 1-3 wt% of triethanolamine and 2-4 wt% of anhydrous sodium carbonate, stirring and sufficiently dissolving; 3) in the stirring state, adding 13-18 wt% of deionized water into the completely dissolved solution until the pH value of the solution is 6.5-7.2; 4) after stirring for 30 minutes, standing for 4 hours; and 5) finally, filtering with a 1-micrometer filter, and subpackaging. By adopting the nano technique, the pH value of the ice melting agent for transformer substations is approximate to 7, and thus, the ice melting agent is not corrosive to power equipment and does not have any toxic effect on the environment.

The invention discloses a heat-pipe type ice-storing ice-melting cold-accumulating device and an ice-storing cold-accumulating air conditioner. The heat-pipe type ice-storing ice-melting cold-accumulating device is characterized in that an ice-storing box and a secondary refrigerant box of the heat-pipe type ice-storing ice-melting cold-accumulating device are vertically arranged in a box body upand down, the secondary refrigerant box is provided with a liquid inlet and a liquid outlet, and the ice-storing box is filled with water; multiple heat pipes pass through a partition plate so as to be evenly arranged in the ice-storing box and the secondary refrigerant box, and heat transfer materials are arranged in the ice-storing box and the secondary refrigerant box; a corrugated plate or foamed metal is utilized as the heat transfer materials, a heat pipe is a cylindrical hollow circular pipe with two enclosed ends, and the internal surface of the hollow circular pipe is provided with multiple trapezoidal groove channels; and the depth of each trapezoidal groove is 0.5-1mm, and the hollow inner diameter of the heat pipe is 25-75mm. Compared with the prior art, the device provided bythe invention has the advantages that the heat transfer efficiency is improved, and the flow resistance of the secondary refrigerant is small; and the heat transfer effect of the added corrugated plate or the foamed metal is improved; and the liquid in an ice-storing section exists in a brash ice mode, the phenomenon of overlong ice melting time is avoided, the corrugated plate or the foamed metal is utilized to improve the heat transfer efficiency.

The present invention relates to an environment-friendly snow melting agent prepared from alkaline residues and a preparation method therefor. The environment-friendly snow melting agent comprises a product obtained by a reaction which takes the alkaline residues and acid as raw materials, and preferably comprises one or more of urea, sodium nitrite and magnesium acetate. The preparation method for the product comprises: under a condition of stirring, adding the acid to a reaction tank with the alkaline residues and performing reaction; adjusting the pH value of a reaction system to 7-8 by use of the alkali residues or the acid so as to obtain suspended reaction liquor, and filtering the suspended reaction liquor to obtain the product. The present invention firstly discloses the environment-friendly snow melting agent which is prepared by taking the alkali residues and the acid as raw materials, solves the alkali residue treatment problem, improves the economic value of the alkali residues, and obtains a byproduct carbon dioxide. The method disclosed by the invention is simple and easy to implement. The environment-friendly snow melting agent prepared by the method is good in effect and, green and environmentally friendly; and the production cost of the snow melting agent is obviously reduced.

The invention discloses an environment-friendly efficient ice-melting coating material and a preparation method and an application thereof and aims to solve the technical problem that the deicing costis high, and a deicer pollutes the environment, harms roads and the environment and cannot play roles effectively durably. The coating is prepared from the following raw materials: a deicer, a bonding material, a hydrophobic coating material, a hydrophilic coating material, a hydrophobic plasticizer, a hydrophilic plasticizer, glycerinum, an antisticking agent, talc powder, filler, a semi-fortifier, a flatting agent, a coupling reagent, a defoamer, a pore-foaming agent and hydrophobic fumed silica. The invention further provides a preparation method of the coating material. The coating material is applied to deicing traffic roads. The environment-friendly efficient ice-melting coating material is free of harmful ions, does not lead to corrosion and damage the environment during deicing durably, and has relatively good curing action to the pavement. The raw materials are wide in source, low in cost, simple in production process and easy to operate, and can be popularized and applied ona large scale. A lot of manpower and material resources are reduced, and the environment-friendly efficient ice-melting coating material has important economical value.

The invention relates to a radar antenna reflection net capable of deicing and melting snow rapidly. The radar antenna reflection net capable of deicing and melting the snow rapidly comprises heating cables, multiple stainless steel metal wires and multiple stainless steel metal strips. The stainless steel metal strips form a longitudinal frame of the radar antenna reflection net, the heating cables transversely penetrate into all the stainless metal strips of the longitudinal frame from one side of the longitudinal frame and are turned back and penetrate into the all the stainless metal strips of the longitudinal frame when reaching the other side of the longitudinal frame, and followed by reciprocating until the heating cables are evenly arranged in the longitudinal frame, one stainless metal wire is arranged between two adjacent heating cables, and the metal wires penetrate through all the stainless steel metal strips and are fixed. According to the radar antenna reflection net capable of deicing and melting the snow rapidly, the heating cables are fixed in the reflection net and make surface contact with the stainless steel metal strips, the heat transmission path between the heating cables and the reflection net is shortened greatly, the surface temperature of the whole reflection net is improved as much as possible, the deicing effect of the reflection net is improved effectively, and the radar antenna reflection net capable of deicing and melting the snow rapidly has quite wide application prospects.

The invention relates to the technical field of ice melting for power grids, and discloses a diode rectifier type direct current ice melting device and method with finely adjustable output voltage. Fine adjustment of direct current output voltage and current of the diode rectifier type direct current ice melting device within a relatively large range is realized by using a few of transformer gearpositions. The device comprises a coarse gear position adjustment transformer, a high-capacity rectifier, a fine gear position adjustment transformer and a low-capacity rectifier. The primary side ofthe coarse gear position adjustment transformer is connected with the power grid, and the secondary side of the coarse gear position adjustment transformer is provided with at least two gear positionswith relatively large span lengths; an output port is connected with the high-capacity rectifier; the primary side of the fine gear position adjustment transformer is connected with the power grid, and the secondary side of the fine gear position adjustment transformer is provided with at least two adjustable gear positions with relatively narrow span lengths; an output port of the fine gear position adjustment transformer is connected with the low-capacity rectifier; after the direct-current output sides of the high-capacity rectifier and the low-capacity rectifier are connected in series, atotal ice melting voltage is output. The diode rectifier type direct current ice melting device realizes fine adjustment of the ice melting output voltage of the diode rectifier type direct current ice melting device within a relatively large range only by using a few of transformer gear positions, and is relatively low in cost and high in ice melting performance.

The invention relates to an ice-melting method with voltage reduction, current increase and short circuit by using series connection of two transformers. In the ice-melting method, a high-voltage transformer (2) is electrically connected in series with a high-voltage transformer (3) according to voltage reduction functions of high-voltage transformers, an initial power source (1) is connected to a high-voltage side of the high-voltage transformer (2), and a low-voltage side of the high-voltage transformer (3) is electrically connected with an ice-coated wire (6) through an electric switch (5). According to conditions of the ice-coated wire and parameters of ice-melting equipment, a three-phase short-circuit connection point (7) of the ice-coated wire (6) is selected and an earthing knife-switch (8) is mounted; after the voltage of the initial power source (1) is reduced by the high-voltage transformer (2), the voltage of the initial power source (1) is further reduced by the high-voltage transformer (3) to acquire an ice-melting power source (4) with low voltage and high current intensity; and then the electric switch (5) is switched on, and the ice-melting power source (4) can melt the ice on the ice-coated wire (6).

The invention relates to a prefabricated cabin and a cabin roof thereof. The prefabricated cabin includes a cabin body and the cabin roof located above the cabin body, the cabin roof includes a cabinroof skeleton, a cabin roof cover fixed to the upper side surface of the cabin roof skeleton and an insulation board fixed to the lower side surface of the cabin roof skeleton, and a heating device isarranged in an interlayer space between the cabin roof cover and the insulation board. The heating device is arranged in the interlayer space between the cabin roof and the insulation board to heat the cabin roof cover, the temperature of the cabin roof cover is increased after the cabin roof cover is heated, and the heat is transferred to ice and snow on the cabin roof cover so that the ice andsnow melts away, so that the ice and snow is prevented from continuously accumulating on the cabin roof cover; and the operation process requires no labor, the melting effect is good, and use is convenient.

The invention provides an insulator surface online monitoring device, and relates to the technical field of power transmission line cleaning equipment. The insulator surface online monitoring device comprises a movable carrier, a storage bin arranged on the movable carrier, a suspension mechanism arranged on the storage bin, a spraying mechanism arranged on the movable carrier, a monitoring mechanism arranged on the movable carrier and used for monitoring insulators, and a control mechanism arranged on the movable carrier and used for controlling the movable carrier, the suspension mechanism,the monitoring mechanism and the spraying mechanism. The surfaces of the insulators can be monitored one by one in a power transmission line inspection mode in cold weather, and the surfaces of the insulators can be cleaned and monitored while ice melting is carried out on a line; and in addition, an ice melting agent suitable for an ice melting device is provided, has low freezing point, and is high in ice melting speed within a short time, remarkable in ice melting effect and small in damage to carbon steel and plants.

A short-circuit ice melting method by means of raising voltage and current from zero for a small hydropower station includes that an electric connection mode of a step-up transformer of the small hydropower station is changed, so that the step-up transformer can be used as a step-down transformer; the step-down transformer is combined with a generator, which has a function of raising the current from zero, of the small hydropower station; the generator (1) of the small hydropower station is electrically connected with a high-voltage end of the step-down transformer (2); one end of an iced conducting wire (3) is electrically connected with a low-voltage end of the step-down transformer (2); the other end of the iced conducting wire (1) is subjected to three-phase short circuit to form a three-phase short-circuit point (4); and a grounding knife switch (5) is arranged at the other end of the iced conducting wire (3). The short-circuit ice melting method has the advantages that a control mode of an excitation system of the generator (1) of the small hydropower station is set as a manual fixed-current mode, a magnetic blow-out switch of the generator (1) of the small hydropower station is switched on to manually excite the generator, ice-melting current of the iced conducting wire (3) is gradually increased, and accordingly the purpose of melting ice is achieved.

The electric pole hot air deicing device comprises a fuel oil warm air blower and an air inlet pipe, an air outlet of the fuel oil warm air blower is connected with one end of the air inlet pipe, the other end of the air inlet pipe is connected to an air inlet in the bottom end of an electric pole, and air outlets are formed in the periphery of the top end of the electric pole. The electric pole hollow area is small in space, high in heating efficiency and not affected by the external environment. The electric pole is heated from the inside, the surface temperature of the electric pole is increased, the contact surface of ice and the electric pole is melted and falls off, the ice melting effect is better, in addition, heating is continuously conducted after ice melting is finished, and surface accumulated water is rapidly evaporated. When a worker climbs the pole to work, the electric pole can be maintained at a certain comfortable temperature by adjusting the output power of the ice melting device, and the worker is warmed by contacting with the pole body, so that the working environment is improved. Meanwhile, the situation that the friction capacity is reduced due to the fact that the pole climber is hardened at low temperature in winter due to the fact that the friction material is rubber can be improved.

The invention discloses a low-chlorine environment-friendly snow melt agent without salt dust and a method for preparing the low-chlorine environment-friendly snow melt agent. The low-chlorine environment-friendly snow melt agent and the method have the advantages that the low-chlorine environment-friendly snow melt agent is in the shape of yellowish-brown particles, the particle size of the low-chlorine environment-friendly snow melt agent is 0.3-0.6 cm, the chlorine content of the low-chlorine environment-friendly snow melt agent is lower than the chlorine content of common snow melt agentsby 15% or above, environmental hazards of the low-chlorine environment-friendly snow melt agent can be reduced by 30%-40%, the low-chlorine environment-friendly snow melt agent contains little chloride, and accordingly destruction and pollution on soil, plants and underground water resources due to the low-chlorine environment-friendly snow melt agent are far lower than destruction and pollution due to the common snow melt agents; earth surfaces are free of white salt spots after snow removal operation is carried out, salt dust formation can be effectively inhibited, and secondary pollution can be prevented.