40results about How to "Satisfy cooling" patented technology

The invention relates to a control method for loading and load shedding of an optimized module machine system. The method comprises the steps that 1 superheated temperature ranges of different water temperature are set; 2 corresponding compressor movement judgment periods and the rate of change when a compressor conducts a loading movement and a load shedding movement are set according to the superheated temperature ranges of the different water temperature; when a machine group starts to operate, current total water inlet temperature is detected, and an actual rate of change of the water temperature is calculated; 4 the movement of one or more compressors is determined; 5 a next operating cycle is entered, and the movement moves in circles. According to the control method, the rapid water temperature rising and dropping are achieved, a target set value is obtained, the fluctuation of the water temperature in the operation process is small, the change of a user side load can be matched quickly, and the requirements of the comfort for a user and the manufacturability are met.

The invention provides a passive residual heat exhausting system of a pressurized water reactor nuclear power plant. The passive residual heat exhausting system comprises a passive residual heat removal system and a passive emergency water tank cooling system, wherein the passive residual heat removal system comprises a steam pipe, a passive residual heat exhausting heat exchanger and a condensed water pipe; the passive residual heat exhausting heat exchanger is positioned at the lower part of an emergency cooling water tank of the passive residual heat removal system; the passive emergency water tank cooling system comprises the emergency cooling water tank, a cooling coiled pipe, an ascending pipe, an air cooling heat exchanger and a descending pipe; the cooling coiled pipe is located at the upper part of the emergency cooling water tank. When residual heat removal needs to be carried out under an accident condition or normal shutdown, decay heat of a reactor core is removed by condensing steam at a secondary side so that the safety of a reactor is guaranteed and the possibility of releasing radioactive substances to the environment is reduced. The emergency cooling water tank is used as middle buffering equipment so as to meet the requirements of rapid cooling at the initial stage of an accident and long-time cooling at the later period of the accident.

The invention discloses a multi-connected multi-functional heat pump type electric air-conditioning system and a working method thereof. The air-conditioning system comprises an electric compressor, an out-of-vehicle heat exchanger, a vapor-liquid separator, an in-vehicle heat exchanger, a battery cooler, a vehicle-mounted storage battery, a battery cooler water pump, an electronic expansion valve, an electromagnetic valve, a water tank, a low-temperature cooler water pump, two-position three-way valves, a low-temperature cooler, an out-of-vehicle heat exchanger fan and an in-vehicle heat exchanger fan. According to the air-conditioning system, the year-round operating work condition of an electric vehicle can be well dealt, the in-vehicle heat exchanger and the battery cooler can serve as an evaporator and a condenser according to the needs of the operating work condition, the out-of-vehicle heat exchanger can decide to serve as the evaporator or the condenser in an automatically-matched mode according to the heat load, and heating or cooling of a battery can also be met while the in-vehicle refrigerating or heating requirements are met.

The invention provides a butenedioic acid resin and a preparation method therefor, and degradable micro lubricating oil prepared through the butenedioic acid resin. The butenedioic acid resin is characterized by being prepared from the following substances comprising the following components: butenedioic acid or anhydride maleique, and fatty alcohol, wherein the molar ratio of the butenedioic acid or the anhydride maleique to the fatty alcohol is 1: (1.9-2); raw materials for preparing the degradable micro lubricating oil comprise the butenedioic acid resin. According to the degradable micro lubricating oil prepared by using butenedioic acid resin, a small quantity of the micro lubricating oil is used, so that the requirements of lubrication cooling, wear resistance under extreme pressure and rust prevention of metal processing can be met.

The invention discloses a cooling and tritium extracting loop for a helium cooling solid state tritium multiplication covering layer multiplication unit. The loop comprises a pebble-bed zone of the multiplication unit. Two cooling plates are arranged in the pebble-bed zone. A helium cooling loop and a tritium extracting loop are arranged at one end of the pebble-bed zone. Helium in the helium cooling loop enters from a helium cooling loop gas inlet and enters the cooling plates after flow dividing by a bottom helium flow dividing cavity, then the helium enters a helium flow collecting cavity, and finally the helium flows out of the multiplication unit through a helium cooling loop gas outlet. Tritium extracting gas in the tritium extracting loop enters from a tritium extracting loop gas inlet and enters the pebble-bed zone after flow dividing by a bottom tritium extracting gas flow dividing cavity, tritium generated through reaction is taken away, then the gas enters a tritium extracting gas flow collecting cavity, and finally the gas flows out of the multiplication unit through a tritium extracting loop gas outlet. The requirement for cooling and tritium extracting of the multiplication unit is met, meanwhile, the cooling loop and the tritium extracting loop are integrated in a cavity, the functions of the cooling loop and the tritium loop are not affected, loop integration is achieved, and a tritium multiplication space is effectively enlarged.

The invention discloses a lubricant composition used in an electric mechanical transmission device. The lubricant composition is prepared from a complex of trimellitate and poly-alpha-olefin serving as base oil as well as a plurality of composite additives comprising a rust inhibitor, an antioxidant, an oiliness agent, an anti-wear agent, a metal deactivator, a friction modifier, an anti-foaming agent, an oxidation-resistant and corrosion-resistant agent, a detergent and a dispersing agent. The lubricant composition disclosed by the invention has excellent detergency and dispersibility, cooling property, lubricating property, sealing property, friction property, rust-inhibiting property, corrosion resistance and extreme pressure anti-wear property; by the lubricant composition, a layer of uniform and continuous oil film having a certain thickness is easily formed in a movement friction pair, the coefficient of friction in the movement is decreased, the carrying capacity is increased and the phenomenon of adhesion of transmission members and vibration and noise are reduced.

The invention relates to an energy-saving and environment-friendly printer, comprising a printer body and a drying device (10). The energy-saving and environment-friendly printer is characterized in that the drying device (10) comprises an oven cap (20) and a base (50), and is provided with a printing product inlet (03) and a printing product outlet (04); the oven cap (20) is provided with a drying cavity (13) and a recovering cavity (14); an air supply unit (60), a heat pump condenser (88) and a refrigerating evaporator (96) are arranged in the oven cap (20); the air supply unit (60) comprises a fan (30) provided with an air inlet channel (63), an air exhaust channel (64) and an air outlet channel (68) to form an air blowing and circulating system; the heat pump condenser (88) is installed in the air supply unit (60), and the refrigerating evaporator (96) is installed in the recovering cavity (14). In the invention, drying equipment is firstly reformed, and an air channel with skillful interior is utilized to replace the original air channel with complicated structure and signal function, thereby the effects of compact structure, space saving and reduction of material consumption are achieved.

The invention provides environment-friendly degradable trace cutting fluid. The cutting fluid is characterized by being prepared from raw materials including chitosan polyethylene glycol fatty acid ester, wherein the use amount of chitosan polyethylene glycol fatty acid ester is 30%-100% of total weight of the raw materials. With the adoption of prepared lubricant composition, synthesized chitosanpolyethylene glycol fatty acid ester has excellent lubricity, good extreme-pressure anti-wear property and excellent water solubility, is a good surfactant and can completely or partially replace a traditional extreme-pressure anti-wear agent containing chlorine, sulfur and phosphorus to be applied to the trace cutting fluid, and requirements for lubrication, cooling, extreme-pressure wear resistance and rust protection of metal processing can be met by a small amount of trace cutting fluid; under cooperation with a trace lubricating device for use, the use amount of the cutting fluid can besaved by 90% or higher, and energy-saving, emission-reducing and environment-protecting effects are remarkable.

The invention relates to the technical field of battery thermal management, in particular to a fin perforation type cylindrical battery pack, includomg a plurality of cylindrical cells and a fin group, The fin group is composed of a plurality of fins arranged in parallel, and the fin is provided with a plurality of assembly holes matched with the shape and size of the plurality of cylindrical cells, the edges of the assembly holes extend outward to form flanged edges with a certain height, and the plurality of cylindrical cells vertically penetrate the assembly holes on the fins and are matched with the flanged edges. The invention can solve the problems that the temperature field distribution of the cylindrical battery pack in the prior art is uneven and the part of the non-specific areais overheated, and can meet the requirements of good temperature uniformity, temperature control performance and low cost, light weight and manufacturability.

The invention discloses a new energy vehicle thermal management system. The new energy vehicle thermal management system comprises a first cooling circuit, a second cooling circuit, a third cooling circuit, a fourth cooling circuit and a fifth cooling circuit. The new energy vehicle thermal management system has five circulation modes, and effective cooling and heating of ternary lithium batteriescan be satisfied so that the maximum property is given to full play; thermal management efficiency is improved; and the system structure is simplified. The invention further discloses a battery electric vehicle.

The invention discloses an ecological northern alkaline mine water treatment system and an ecological northern alkaline mine water treatment method. Firstly, alkaline mine water passes through a primary sedimentation basin, so that large-grain suspended matters in the sewage are sedimentated, the sewage enters a primary filtering basin and is filtered after primary sedimentation, the primary filtering basin is mainly built with mixed Liyang soil and coal gangue, which are used as adsorbent for removing pollutants in the sewage, and in order to enhance the water treatment effect, the filtering basin consists of a plurality of alternate filtering basins and sedimentation basins; the sewage enters a sedimentation basin after primary filtration, aquatic weeds in the sedimentation basin are utilized to separate sludge from water and concentrate the sludge, pollutants in the sewage are further sedimentated, the sewage enters a secondary filtering basin and is filtered after sedimentation, the filtering basin is built with peat granules, and can effectively remove pollutants in the mine water containing waste machine oil, emulsified oil and other organic pollutants, and the salt balance and pH value of the water are regulated; finally, the filtered water flows into an ecological pool, and is used for raising ornamental fishes, and thereby the sewage is recycled.

The invention provides a lubricant composition. The lubricant composition is characterized in that the lubricant composition prepared from the components in parts by weight: 100 parts of ricinoleic acid, 8-10 parts of rare earth oxide, 5-8 parts of boric acid, 3-5 parts of phosphoric acid, and 5-8 parts of diethylaminoethanol. The prepared lubricant composition is a boron-phosphorus-rare earth friction modifier, an anti-rust agent, and is also a good surfactant due to the fact that the ricinoleic acid has the characteristics of -OH, -COOH and unsaturated bonds, C long chain and the like. The invention further provides preparation of trace lubricant by using the lubricant composition. The preparation is characterized in that the lubricant composition further includes the components such asisodecyl isodecanoate, sodium cocoyl glutamate, maleic acid ricinoleate, propylene glycol alginate, and myristyl alcohol; the trace lubricant prepared by the lubricant composition can meet the requirements for lubrication cooling, extreme pressure abrasion resistance and rust prevention of metal processing; and the use amount of the lubricant can be saved more than 90% used with a trace lubrication device.

The invention relates to a blast furnace cooling system transformation method. The method comprises the following steps: 1) a blast furnace lower section cooling system is designed; 2) a furnace cylinder and a furnace bottom cooling wall water supply/drainage pipe network are connected to form the blast furnace lower section cooling system; 3) a furnace bosh, a furnace waist and a furnace body cooling wall water supply/drainage pipe network are connected to form a blast furnace upper section cooling system; and 4) an upper section water supply/drainage main pipe of the blast furnace upper section cooling system is connected with a lower section water supply/drainage main pipe of the blast furnace lower section cooling system; and when one cooling system is broken down to be incapable of satisfying the use requirements, the other cooling system replenishes cooling water into the system or replaces to finish the cooling operation. The method can finish transformation of a blast furnace cooling system under the condition of not influencing normal production of a blast furnace, realizes segmented cooling below the furnace cylinder and above the furnace bosh, satisfies actual requirements of adjusting the cooling water quantity at different parts and controlling the thermal load at all the parts in the operation of the blast furnace, guarantees continuous production of the blast furnace, and prolongs the whole service life of the blast furnace.

The invention belongs to the structural design of diesel engines, and relates to a composite pipeline connector. The composite pipeline connector comprises a pipeline body (4), a connection body (1), a tee joint body (3) and sealing rings (2). A central through hole of the connection body is a preheating water return channel, the connection body is connected with a cooling water pipe of a fresh water pump and the pipeline body (4) through threads, and the pipeline body is connected with a stop valve in a preheater pipeline. Cooling water is led to a sensor pipeline through a small hole formed in the pipeline body (4), the tee joint body (3) is arranged on the connection body (1) and the pipeline body (4) in a sleeved mode, and the middle channel of the tee joint body (3) is connected with the sensor pipeline. The sealing rings (2) are arranged between the connection body (1) and the tee joint body (3) and between the pipeline body (4) and the tee joint body (3) respectively. The composite pipeline connector can meet the requirements for cooling water preheating and fresh water pressure detection of the diesel engine at the same time, the connection body (1) and the pipeline body (4) are connected through threads, and assembling and disassembling are convenient.

The invention provides a lubrication oil composition. The lubrication oil composition is characterized by being prepared from fatty alcohol and citric acid, wherein the molar ratio of the fatty alcohol to the citric acid is (1.5-2.5):1. The lubrication oil composition prepared by adopting a preparation method is good in lubricity and biodegradability. The invention provides a trace quantity lubrication oil prepared by adopting the lubrication oil composition. The trace quantity lubrication oil is prepared from the lubrication oil composition, iso-octyl palmitate, sodium cocoyl glutamate, an organoboron compound and other components, and can meet the requirements of metal processing for lubrication cooling, extreme pressure wear resistance and rust prevention; in cooperation with a trace quantity lubrication device for using, the using amount of the lubrication agent can be saved by 95% or above, and the effects of energy conservation, emission reduction and environment protection are significant.

The invention provides a lubricant composition. The lubricant composition is prepared from the following raw materials: sorbitol, dimer acid and polyethylene glycol, wherein the molar ratio of the above-mentioned sorbitol to the dimer acid to the polyethylene glycol is 1: (2-3): (1-3). By adoption of the lubricant composition prepared by using the method provided by the invention, a synthetic polyester compound has excellent lubricity, good extreme pressure anti-wear properties and excellent water solubility, is also an excellent surfactant, and can completely or partially replace a traditional extreme pressure anti-wear agent containing chlorine, sulfur and phosphorus to be used in an environmentally-friendly micro cutting fluid, so a small amount of the environmentally-friendly micro cutting fluid can meet the requirements of lubrication cooling, extreme pressure wear resistance and rust prevention in metal processing; and by combination of the environmentally-friendly micro cuttingfluid with a micro lubrication device for application, the usage amount of the cutting fluid can be saved by 90% or above, and the effects of energy conservation, emission reduction and environmentalprotection are significant.

The invention belongs to the field of hypersonic wind tunnel test equipment, and discloses a cooling water distribution device for a high-Mach-number spray pipe of a conventional hypersonic wind tunnel. The distribution device adopts a set of high-pressure cooling water supply system, realizes the distribution of cooling water pressure and flow through the inlet water distributor and the inlet water flow adjusting throat, not only meets the requirements of cooling water in the nozzle throat section water channel on medium-high pressure and high flow speed, but also meets the requirements of cooling water in the nozzle diffusion section water channel on low pressure, low flow speed and high flow speed. And the requirement that cooling water flows in the interlayer is met. The distribution device meets different requirements of high-pressure cooling of a throat section and low-pressure cooling of a diffusion section of a high-Mach-number spray pipe of a conventional hypersonic wind tunnel, the complexity of a cooling water supply system of the high-Mach-number spray pipe is simplified, the simplicity and convenience of operation and maintenance are improved, and the development cost is reduced. And the device can be popularized and applied to equipment needing cooling of different pressure grades at similar different positions.

The invention discloses a novel cooling device for a wind driven generator. The wind driven generator is included, a generator set and a transmission set are arranged in the wind driven generator, the generator set and the transmission set are installed on the two sides of the interior of the wind driven generator correspondingly, and the generator set and the transmission set are in transmission connection through a coupler. The front end of the wind driven generator is provided with wind power fan blades in transmission connection with the transmission set, the front end and the rear end of the wind driven generator are both provided with heat dissipation holes, the exterior of the wind driven generator is fixedly connected with a mounting frame, and the inner side wall of the mounting frame is provided with a ventilation mechanism corresponding to the rear end of the wind driven generator. A liquid cooling heat dissipation mechanism used for conducting heat dissipation on the generator set and the transmission set is installed at the inner bottom of the mounting frame. Through combination of air cooling and liquid cooling, a good heat dissipation and cooling effect is achieved, the service life of the wind driven generator is prolonged, and a wide market prospect is achieved.

The invention provides a battery thermal management system for a vehicle and belongs to the field of batteries. The system comprises: a thermoelectric semiconductor heat exchange unit including a thermoelectric semiconductor, a first air heat exchanger and a second air heat exchanger, wherein the first air heat exchanger has one end connected to a first air inlet pipeline and the other end connected to a first air outlet pipeline, the second air heat exchanger has one end connected to a second air inlet pipeline and the other end connected to a second air outlet pipeline; a battery pack havingone end connected to the first air outlet pipeline and the other end connected to a third air outlet pipeline; a fan unit disposed downstream of the third air outlet pipeline and the second air outlet pipeline and configured to discharge the airflow of the third air outlet pipeline and the second air outlet pipeline out of the vehicle; and a control unit connected to the thermoelectric semiconductor heat exchange unit and the fan unit and configured to control the voltage applied to the thermoelectric semiconductor and the power of the fan unit according to the temperature of the battery pack. The battery thermal management system of the invention has a good cooling effect, a simple system and low cost.

The invention discloses a high-strength steel part hot-stamping forming device with gradient distributed performance. The high-strength steel part hot-stamping forming device with the gradient distributed performance comprises an upper die seat, an upper fixing plate, a plurality of upper die blocks, a lower die seat, a lower fixing plate and a plurality of lower die blocks; the upper fixing plateis mounted on the upper part of the upper die seat through a first air pressure device, the upper fixing plate is provided with an upper fixing plate protruding part and an upper fixing plate groovepart, and a second air pressure device is mounted on the upper fixing plate groove part; the multiple upper die blocks are fixedly connected with the upper fixing plate protruding part and the secondair pressure device correspondingly, and each upper die block is provided with a heating hole channel and a cooling water channel; the lower fixing plate is fixed to the upper part of the lower die seat, the lower fixing plate is provided with a lower fixing plate protruding part and a lower fixing plate groove part, and a third air pressure device is mounted on the lower fixing plate groove part;and the multiple lower die blocks are fixedly connected with the lower fixing plate protruding part and the third air pressure device correspondingly, and each lower die block is provided with a heating hole channel and a cooling water channel, wherein the upper fixing plate protruding part is matched with the lower fixing plate groove part.

The invention discloses an extended-range electric vehicle which comprises a driving system which comprises a motor A serving as a driving motor and wheels coaxially connected with the motor A; the battery system is electrically connected with the motor A; the energy recovery system comprises an electric control clutch, an air compression pump A and a high-pressure gas cylinder; the range extender comprises a micro gas turbine and a generator which are connected with each other; the heat management system comprises a refrigerating system, a heating system, a heat exchange medium circulating system, a refrigerating fan and a heating fan. The invention further discloses a control method of the electric vehicle. Cooling is achieved through the refrigerating machine, the efficiency is high, and the electric quantity of a battery system and the endurance mileage do not need to be considered; heating/refrigerating is achieved through waste heat of the micro gas turbine, meanwhile, the high-pressure gas cylinder serves as an energy balancer, braking energy of the extended-range electric vehicle is recycled, peak load shifting of energy of the whole vehicle is achieved, and the energy utilization rate is increased while environmental protection and energy saving are achieved.

The invention discloses a multi-grade waste heat recovery system for refrigeration of a thermal power plant coupling data center and a control method. The multi-grade waste heat recovery system mainly comprises a waste heat boiler, a turboset, a condenser, a shaft seal heater, a steam-water heat exchanger, a hot water type lithium bromide refrigerating unit, a flue gas waste heat recovery device, a cooling tower, a water-gas heat exchange device, a data center machine room, a cabinet set, an absorption heat pump, a drainage heat exchanger and a heating user, wherein the flue gas waste heat recovery device and the steam-water heat exchanger generate high-temperature hot water to be used for driving the hot water type lithium bromide refrigerating unit to produce chilled water to cool the data center machine room, and waste heat of the condenser and waste heat of the hot water type lithium bromide refrigerating unit are driven by the absorption heat pump to supply heat to the heating user at the same time. By recovering multi-grade waste heat and coupling resident heating and data center cooling requirements, the energy efficiency level of a power plant is improved, the PUE index of the data center is deeply reduced, and wide application prospects are achieved.

The invention discloses a high and medium pressure joint heat supply system based on energy level matching. The high and medium pressure joint heat supply system based on energy level matching comprises a high pressure heat supply steam system, a medium pressure heat supply steam system and a steam-steam heat exchanger system. Firstly, the novel steam-steam heat exchanger system is designed, by means of the system, energy redistribution is achieved, temperature lowering of the medium pressure heat supply steam system is achieved, heating of high pressure heat supply steam is also achieved, and gradient utilization of energy is achieved by achieving two benefits; secondly, according to the heat supply scheme, steam extraction is used for replacing raw main steam heat supply, separate production of heat and power of the original high pressure heat supply steam is changed into combined production of heat and power, and the energy utilizing efficiency is improved; and thirdly, a high pressure heat supply bypass and a medium pressure heat supply bypass system are designed, and by means of cooperation of a heat supply main way and the bypasses, the variable work condition requirement of heat supply is flexibly and conveniently met. Thus, by means of the high and medium pressure joint heat supply system based on energy level matching, the energy utilizing efficiency is improved, and the heat supply reliability is also improved.

The invention relates to the technical field of cutting fluid, in particular to a discharge-free aluminum alloy cutting fluid and an application method thereof. The discharge-free aluminum alloy cutting fluid comprises 0-10 parts of boric acid, 1-5 parts of diacid rust inhibitors, 1-5 parts of triacid rust inhibitors, 1-20 parts of aqueous polyether ester, 1-30 parts of alcohol amine, 1-5 parts ofcationic surface active agents, 0.1-2 parts of defoaming agents and the balance deionized water. The application method includes diluting the discharge-free aluminum alloy cutting fluid by water in avolume ratio of 1:(20-30) for grinding aluminum alloy; diluting the discharge-free aluminum alloy cutting fluid by water in a volume ratio of 1:(10-20) for milling aluminum alloy; diluting the discharge-free aluminum alloy cutting fluid by water in a volume ratio of 1:5-1:10 for drilling and tapping aluminum alloy. The discharge-free aluminum alloy cutting fluid is applicable to light-load and heavy-load machining of the aluminum alloy and capable of keeping a pH value and the granularity stable effectively during use and avoiding deteriorating and stinking, and only needs continuous additionwithout waste liquid discharge.

The invention discloses a method for wort on-line cooling detection through a portable oxygen dissolving instrument. On-line cooling detection is conducted on hot wort through cooperation of a mobilecooler and the portable oxygen dissolving instrument, the method includes the three steps that hot wort sampling is conducted, specifically, a sampling valve is installed on a wort conveying pipelinein the hot wort section, a food grade rubber hose I communicates with the sampling valve and an inlet of the mobile cooler, and hot wort is introduced into the tube pass of the mobile cooler under thecondition of oxygen isolation; hot wort cooling is conducted, specifically, the hot wort is continuously precooled with low-temperature water with the temperature being 6 DEG C or below in the shellprocess of the mobile cooler; and cold wort detection is conducted, specifically, a food grade rubber hose II communicates with an outlet of the mobile cooler, after the hot wort is precooled to 40 DEG C or below, the sampling valve at the hot wort sampling point is closed and the portable oxygen dissolving instrument is started, the food grade rubber hose II is connected with the portable oxygendissolving instrument, then the sampling valve is opened, and on-line detection of cold wort oxygen dissolving is realized.

The invention discloses wind control equipment for processing cooling of an ultra-large wind power fan blade. The wind control equipment comprises a variable frequency control unit (1), a combination fan (2), an adjustable wind pipe (3), the ultra-large wind power fan blade (4) and a temperature measurement module (5), wherein the variable frequency control unit (1) is sequentially connected with the combination fan (2) and the adjustable wind pipe (3); the adjustable wind pipe (3) cools the ultra-large wind power fan blade (4) by getting close to the ultra-large wind power fan blade (4); the temperature measurement module (5) is connected with the ultra-large wind power fan blade (4) and the variable frequency control unit (1); and the temperature measurement module (5) feeds a temperature signal back to the variable frequency control unit (1). The wind control equipment is applied to rapid cooling of an overlong semi-closed large space, and the problems that heat dissipation is not convenient and an air conditioner can not be appropriately used in a cooling space due to space and temperature limitations are solved.

The invention provides a fan coil, a control device and a control method. The control method includes the following steps that an actual return air temperature and an actual air outlet temperature areobtained; a target air outlet temperature is determined according to the actual return air temperature; according to the actual air outlet temperature and the target air outlet temperature, a targetopening of a mixing valve of a cooling medium and a heating medium of the fan coil is determined; and the opening of the mixing valve is adjusted according to the target opening. Compared with the prior art, according to the control method, the air outlet temperature is adjusted by changing the opening of the mixing valve, so that the air outlet temperature is more stable, the comfort of the fan coil is improved, and the user experience is improved.

The invention provides a reducing device and a reducing method of a quartz glass rod. The reducing device comprises a smelting furnace and a traction device, wherein the traction device is used for reducing a pull rod; the smelting furnace internally comprises three gas paths. After an inert gas is introduced to the smelting furnace, the inert gas can be guided according to preset gas paths and then can be discharged from an upper gas discharging opening and a gas blocking pipe, airflow has no situation of striking due to reversing, and a pull rod technology is prevented from being affected byhead-on collision vortex.

A thin strip continuous casting strip steel cooling mechanism, which is provided with a plurality of cooling groups (C1, C2, ..., Cn), each cooling group includes at least one cooling unit (1), each cooling group The cooling method of the cooling unit is at least one of air mist cooling, laminar flow cooling, and jet cooling; the cooling units are respectively located on the upper side and the lower side of the roller table, and include a header main road (2 ) and at least two header branches (3) connected to the header main road, a plurality of nozzles (4) are arranged on the header branch, and an on-off switch ( 5), the water pipe and the air pipe are also provided with an opening control valve (6) for controlling the flow of gas and liquid in the cooling unit. The cooling mechanism realizes the control of the cooling speed of the steel strip, and has the effect of uniformly cooling the steel strip. It also includes a cooling method for the thin strip continuous casting strip steel cooling mechanism.

The invention discloses a handheld electric welding machine which comprises an electric welding machine body, wherein an electric welding device is fixedly arranged on the left side of the inner upper end of the electric welding machine body; and a welding head used for performing electric welding operation is fixedly connected with the left end of the electric welding device and extends outward. When the electric welding machine works, an elastic plate moves rightward and a soft surface gets in touch with the finger surface of an electric welding worker, so that the stability of electric welding machine holding by the electric welding worker can be improved through clamping in the electrician working process, and then the stability of the electric welding work can be improved; through a baffle plate which extends outward, the sputtering, due to carelessness, of a high-temperature material in the electric welding work can be blocked, and then the safety of the worker can be improved; and meanwhile, the requirements for cleaning and cooling of the surface of the welding head of the electric welding machine can be met well when a pressing plate is repeatedly pressed by the electric welding worker so as to output wind can repeatedly press a pressing rotating plate to output wind power.