63results about How to "Resolve freeze" patented technology

The invention aims at providing a passive safety shell cooling system comprising a water tank, an inner evaporator pipe bundle, a steam-water separator and an outer air cooler, wherein the water tank is positioned in an annular cavity formed by an inner-layer concrete safety shell and an outer-layer concrete safety shell; the outer air cooler is positioned between the dome of the inner-layer concrete safety shell and the dome of the outer-layer concrete safety shell; both an inner evaporator and the steam-water separator are positioned inside the inner-layer concrete safety shell; two ends of the inner evaporator are respectively connected with the steam-water separator through two pipes; the steam-water separator is connected with the outer air cooler through a first pipe extending out of the inner-layer concrete safety shell; and the inner evaporator pipe bundle is communicated with the water tank through a second pipe extending out of the inner-layer concrete safety shell. When accidents such as LOCA (Loss Of Coolant Accident) and MSLB (Main Steam Line Break) occur, the passive safety shell cooling system can be used for safely and reliably conducting heat out of the safety shell for a long term, ensuring the temperature inside the safety shell, and guaranteeing that pressure is no more than a limiting design value, thereby maintaining the integrity of the safety shell.

The present invention discloses a low-temperature nickel-hydrogen battery, which comprises a positive electrode, a negative electrode and an electrolyte, wherein active materials of the positive electrode comprise nickel hydroxide, cobalt-coated spherical nickel hydroxide, and yttrium oxide, a weight ratio of the nickel hydroxide to the cobalt-coated spherical nickel hydroxide to the yttrium oxide is 100:5-15:1-3, a substrate of the positive electrode is foam nickel, and the edge of the foam nickel has a compaction white edge with a width of 2-3 mm. The present invention further discloses a preparation method for the low-temperature nickel-hydrogen battery. The low-temperature nickel-hydrogen battery can maintain high charging efficiency under a low temperature environment, such that electrolyte solidification inside the nickel-hydrogen battery under a low temperature environment can be avoided, and a use temperature range of the nickel-hydrogen battery is expanded. In addition, characteristics of simple preparation and low cost are provided.

The invention discloses an antifreezing control method for a hot water heater of an air conditioning heat pump. The method comprises the following steps of: collecting water temperature values of a water system of a unit of the hot water heater of the air conditioning heat pump at to-be-detected parts in a water circulating pipeline; and when the water temperature value at any one of the to-be-detected parts is smaller than a corresponding set temperature value, starting an auxiliary heating device at a corresponding part so as to raise the temperature of the part and the water temperature of the water system. The method disclosed by the invention can solve the problem that the hot water heater of the air conditioning heat pump is frozen as parts of the water system are frozen due to over-low water temperature in the water system.

The invention discloses a multiple-temperature-gradient utilizing system using solar heat collection. According to the system, three temperature storage water tanks with water of different temperatures contained are adopted, distribution of the water of different temperatures in all the water tanks is adjusted in an optimized mode, hence, gradient utilization can be acheived, and the cooling and heating requirements can be met. Domestic hot water of two different temperatures can be provided by the system, the cooling or heating requirement and the anti-freezing requirement of the radiation tail end of a capillary tube under different season conditions can be met, and thus the comfort, high efficiency and safety are guaranteed. The solar heat utilization and thermoelectricity integration combined supply technology is adopted in the system. The device is provided with a novel solar thermal collector-photovoltaic/photo-thermal collector (PVT) with photovoltaic power generation and solar low-temperature heat utilization integrated. The device comprises a solar high-temperature collector end, a solar PVT intermediate temperature collector end, a lithium bromide absorption type refrigeration low-temperature water storage end, an indoor capillary tube cooling and heating radiation end, a winter anti-freezing exhausting pipeline protection end and a biomass supplementary heat source and domestic hot water making end.

The invention provides an air conditioner control method and device, an air conditioner and a readable storage medium. The air conditioner control method comprises the steps of obtaining the environment temperature value of an outdoor unit of the air conditioner; judging whether the environment temperature value meets an anti-freezing dehumidification control condition or not; and performing anti-freezing dehumidification control if it is judged that the anti-freezing dehumidification control condition is met. The anti-freezing dehumidification control comprises the steps of obtaining the temperature value of an evaporator; and regulating the valve step value of a target electronic expansion valve of the air conditioner according to the temperature value of the evaporator, and regulating the speed value of an outer fan of the air conditioner so as to maintain the temperature of an evaporator coil. According to the air conditioner control method provided by the embodiment of the invention, the freezing problems of frosting, freezing and the like of an indoor unit during dehumidification control of the air conditioner are solved.

The invention discloses an intelligent temperature control system for protecting the arc-extinguishing medium of an SF6 circuit breaker in an alpine region from being liquefied, and relates to the high-voltage electrical field. The invention aims at effectively increasing the temperature of the arc-extinguishing medium of the SF6 circuit breaker and the temperature of the working environment of an operating mechanism. The system consists of a heating band unit, a temperature display adjustment unit, a temperature collection and transmission unit, and a self-powered supply unit. The temperature collection and transmission unit enables the temperature data of an arc extinguish chamber and a circuit breaker cross beam box to be transmitted to the temperature display adjustment unit in a wireless mode, and the temperature display adjustment unit carries out the comparison processing of the data. A subsequent heating band circuit is driven to adjust the internal temperature of the arc extinguish chamber and the circuit breaker cross beam box. The system achieves the closed-loop control, effectively increases the temperature of the arc-extinguishing medium of the SF6 circuit breaker and the temperature of the working environment of the operating mechanism, and improves the work stability of the circuit breaker.

The invention discloses a plate-type evaporative condenser for a direct air-cooling unit. The plate-type evaporative condenser comprises corresponding pipelines, valves and the like. After low-pressure-cylinder zero-output heat supply reformation is performed on the direct air-cooling unit, the flow of steam entering the air-cooled condenser is significantly reduced; in order to prevent an air-cooling heat exchange tube bundle from freezing, an air-cooling island steam distributing pipe inlet valve can be switched off in low-pressure-cylinder zero-output heat supply operation of the direct air-cooling unit in the heat supply season, and exhaust steam of the unit flows back to a main unit thermal system after entering the plate-type evaporative condenser for condensation. The plate-type evaporative condenser can serve as a peak cooling system for the high-temperature and high-load section of the direct air-cooling unit in summer, and the purpose of reducing operation back pressure to save energy and reduce consumption is achieved.

The invention provides a production process and device for preparing ethylene through dehydration of ethanol. According to the invention, an ethanol dehydration reaction system, a quenching compression system, an alkaline tower system, a molecular sieve regeneration system, an ethylene purification system, a propylene refrigeration circulation system and the device are arranged. The production process comprises the following steps: feeding ethanol to the ethanol dehydration system, and carrying out a dehydration reaction to obtain reaction gas; cooling and separating the reaction gas in the quenching compression system, and returning the recovered ethanol to the ethanol dehydration reaction system; feeding crude ethylene, carbon dioxide, water and the like to the alkali washing and molecular sieve system, and removing carbon dioxide and water to obtain crude ethylene; feeding the crude ethylene to the ethylene purification system to obtain an ethylene product; and providing cooling quantity for the ethylene purification system via the propylene refrigeration circulation system. According to the process, gradient utilization of heat of high-temperature reaction product gas is designed; a propylene circulation compression refrigeration system is adopted to provide a low-temperature refrigerant, so energy consumption in the process is effectively reduced; and external water replenishing is canceled while sewage discharge of the system is reduced, so water resource consumption is reduced.

The invention discloses an artemisia extract composition for skin, a product prepared by using the artemisia extract composition and application of the product. The composition comprises 5-10% of artemisia volatile oil, 10-20% of artemisinin, 25-45% of pseudo-ginseng leaf glycoside, 7-20% of baicalin, 7-15% of oleanolic acid and 5-10% of borneol in percentage by weight. The product is used for treating skin diseases, and is high in safety, good in compliance and remarkable in efficacy.

The invention relates to coal separation equipment, in particular to a removable movable sieve dry-type coal picking machine. The coal picking machine comprises a controllable material inputting device and further comprises a first section dry-type movable sieve jig and a second section dry-type movable sieve jig, wherein the first section dry-type movable sieve jig comprises a box body, the box body is internally provided with a first section movable sieve, a first section movable sieve drive device, a first section gangue removing device and a first section vibrating sieve, the box body is further provided with a first section air inlet, a first section air outlet, a first section gangue material discharge opening, a first section lump coal outlet and a first section clean coal outlet, the second section dry-type movable sieve jig comprises a box body, the box body is internally provided with a second section movable sieve, a second section movable sieve drive device, a second section gangue removing device and a second section vibrating sieve, the box body is further provided with a second section air inlet, a second section air outlet, a second section gangue material discharge opening, a second section lump coal outlet and a second section clean coal outlet. The removable movable sieve jigging dry-type coal picking machine is designed and developed aimed at a small-size coal mine, the selection rate of coal of our country can be sharply increased, and the economic and social benefits of coal in national economy are increased.

The invention provides a motor. The motor includes a shell, a stator, and a rotor; a plurality of heat transfer through holes are formed in a stator core; each heat transfer through hole includes a first strip-shaped hole of which the opening faces the radial outer side of the stator, and a plurality of rectangular oil holes of which the openings face the radial inner side of the stator, wherein the rectangular oil holes are distributed along the length direction of the first strip-shaped hole at intervals; each first strip-shaped hole extends along the axial direction of the stator; each rectangular oil hole is communicated with the corresponding first strip-strip hole, so that each heat transfer through hole can be communicated with the inner side and outer side of the stator core; a plurality of second strip-shaped holes are formed in the shell; each second strip-shaped hole is corresponding to one first strip-shaped hole; the motor further comprises a plurality of heat conducting devices; and each heat conducting device comprises heat conducting sheets; one side of each heat conducting sheet is inserted into the bottom of the corresponding first strip-shaped hole, and the otherside of the heat conducting sheet is inserted at least into the bottom of the corresponding second strip-shaped hole, and therefore, the heat of the inner side of the stator core can be at least transferred to the shell. The motor has the advantages of high heat dissipation efficiency and excellent motor performance.

The invention discloses a solar water heater antifreezing system capable of exchanging heat through direct contact of gas and liquid. The solar water heater antifreezing system comprises a solar thermal collector, a direct contact heat exchanger, a gas storage box and a geothermal buried pipe, wherein the direct contact heat exchanger is used for perform circulating heat exchange through direct contact of high-temperature gas and water in the solar thermal collector to improve the temperature of the water in the solar thermal collector; the gas storage box is connected with a high-temperatureinlet of the direct contact heat exchanger through an electromagnetic valve; and the geothermal buried pipe is connected with the gas storage box through a gas boosting pump. Geothermal energy in soilis absorbed by gas filled in the geothermal buried pipe and the low-temperature water in the solar thermal collector is heated by a gas and liquid direct contact heat exchange mode, so that the phenomenon that the solar thermal collector is frozen in low-temperature weather is avoided, heat exchange speed is high, efficiency is high and energy is saved.

The invention discloses an anti-freezing method for blades of a rotary electric air door, and relates to the technical field of electric air doors of refrigerators. The anti-freezing method comprises the following steps that the refrigerator is powered on, the control system operates, and the monitoring module monitors the state of the rotary electric air door; the opening state of the electric air door and the duration of maintaining the secondary state are judged; and when the duration time is larger than the preset value, the control module controls the rotary electric air door to execute the anti-freezing instruction. By timely controlling the action of the blades of the rotary electric air door and reasonably starting the heating wire of the rotary electric air door, the problem that the existing blades are frozen at low temperature is effectively solved, and normal work of the rotary electric air door is ensured.

The invention relates to a special process and a device for treating pit water by combining an ultrafiltration membrane component and a magnetic immersible pump. A treatment unit is formed by a special hollow fiber ultrafiltration membrane component and a water-permeable outer bushing; and power for filtering and conveying water is provided by the micro magnetic immersible pump fixed on the outer bushing of the membrane component. During working of the system, an eccentric wheel driven by the magnetic pump generates vibration on the membrane component so as to prevent pollution on the membrane and realize the function of washing the membrane. The treatment process can be used for deep treatment for the pit water, so that the treated pit water is in accordance with the national ruled water quality standard. The invention has the characteristics that: the treatment system is directly arranged in the pit water so as to prevent freezing of the equipment and the pipeline; the vibration caused by the eccentric wheel prevents pollution to the membrane component and realizes the function of washing the membrane; the treatment process is simple, the equipment is integrated, small in volume, light in weight, and low in manufacturing cost and running cost; and the process is a small-size household water purification process used by dispersed rural residents for treatment for the quality of the pit water.

An antifreeze solar water heater with an insulation tube and a water tank linked of the invention is designed with an aim that the insulation tube of an upper-lower water tube, a link short tube, an overflow tube and interior form a system by adopting the heat emitted by the solar water tank and the interior air with higher temperature and by adopting the link short tube to link the insulation tube of the upper-lower water tube and the overflow tube and with an aim that the upper-lower water tube is insulated so as not to be easily frozen by adopting the heat emitted by the solar water tank and the interior air with higher temperature. After the upper-lower water tube is frozen, the water tank can be filled with water through the overflow tube, and after the water tank is full of water, the hot water in the water tank can be injected into the insulation tube through the link short tube so as to thaw the upper-lower water tube, or the hot water can be injected into the insulation tube via a pipeline so as to heat and thaw the upper-lower water tube. The antifreeze solar water heater has the advantages of simple structure, easy production and installation and convenient use, and solves the problem that the water tube of the solar water heater is frozen and can not be used in winter.

The invention discloses an anti-freezing device for well water in a high cold area by using high-pressure gas interference. The anti-freezing device comprises a water well body, a water suction pump,a water suction pipe, a gas pipe and a high-pressure gas pump, wherein the water suction pump is arranged in the water well body, the water suction pipe is arranged at the upper end of the water suction pump, the gas pipe is inserted into the water well body, a high-pressure gas storage tank is connected to one end of the gas pipe, the high-pressure gas storage tank is connected with the high-pressure gas pump, the high-pressure gas pump is connected with a diesel generator, and a pipeline heater is installed on the gas pipe. According to the anti-freezing device, high-pressure gas is injectedinto the water well body by arranging the high-pressure gas pump, high-pressure bubbles are formed in water body, and are heated by the pipeline heater, so that the high-temperature and high-pressurebubbles are seethed in the water body, and the problem of water freezing of the water body in the water well body is effectively reduced.