36results about How to "Prevent cross-channeling" patented technology

The invention discloses a device and a method for collecting storage tank discharged gas. The device comprises more than one storage tanks A for storing a medium A, and more than one storage tanks B for storing a medium B; breather valves, emergent release valves, pressure transducers and cutting valves are respectively arranged at the tops of the storage tanks; the cutting valves of the storage tanks A are communicated with storage tank A gas phase pipes through storage tank A pipe fire stoppers; the other ends of the storage tank A gas phase pipes are respectively connected with one end of a storage tank A gas phase gathering pipe; the cutting valves of the storage tanks B are communicated with storage tank B gas phase pipes through storage tank B pipe fire stoppers; the other ends of all the storage tank B gas phase pipes are respectively connected with one end of a storage tank B gas phase gathering pipe; the other end of the storage tank A gas phase gathering pipe and the other end of the storage tank B gas phase gathering pipe are respectively connected with one end of a storage tank gas phase gathering pipe main pipe; and the other end of the storage tank gas phase gathering pipe main pipe is connected with a dirty oil collecting system. The device can reduce the loss caused by direct discharge of oil into the atmosphere, and reduces the probability of generating potential safety hazards by feeding a lot of air into the tanks.

The invention relates to a combined diaphragm regulating valve device, an alkaline water electrolysis hydrogen production system and a control method. The combined diaphragm regulating valve device comprises a plurality of diaphragm regulating valve branches with different gas flow ranges and flow distributors used for distributing flow of the branches, the diaphragm regulating valve branches arearranged in parallel, the flow distributors are connected with the diaphragm regulating valve branches respectively, and in the working process, at least one diaphragm regulating valve branch works. The alkaline water electrolysis hydrogen production system comprises an alkaline water electrolysis hydrogen production device, an alkali liquor circulating device and two combined diaphragm regulatingvalve devices. The alkaline water electrolysis hydrogen production device comprises an electrolytic cell, an oxygen side gas-liquid separator and a hydrogen side gas-liquid separator. The alkali liquor circulating device is connected with the alkaline water electrolysis hydrogen production device, and the combined diaphragm regulating valve devices are respectively arranged at the gas output endsof the oxygen side gas-liquid separator and the hydrogen side gas-liquid separator. Compared with the prior art, the safety of the alkaline water electrolysis hydrogen production system under different working power ranges is ensured.

The invention relates to a mixed water valve for automatically limiting flow, which belongs to the technical field of the manufacture of water heating equipment. The mixed water valve is characterizedin that a cylindrical annular upper water jacket and a cylindrical annular lower water jacket are arranged in a valve body; a mixed water cavity of the annular water jackets is provided with an upperpiston and a lower piston with a seal ring; the lower side of the lower piston is provided with a thermal bulb device with mechanical thrust; the lower side of the thermal bulb device is provided with a return compression spring; the thermal bulb device can drive the pistons to move up and down through a temperature controlled displacement part; and a water inlet pressure limiting valve is arranged in a hot and cold water inlet of the mixed water valve, and comprises a balanced cover, a balanced sliding sleeve, a balanced piston rod and a balanced compression spring.

The invention provides a test method and device for half cell of fluid bed electrode direct carbon fuel cell. The method comprises the following steps: firstly, arranging a current collector and the mixture of carbon fuel and catalyst granules in a half cell; secondly, fixing a porous plate in a preset position, and sequentially adding an auxiliary electrode, a reference electrode and carbonate; then, introducing nitrogen gas into the half cell, heating the nitrogen gas to a preset reaction temperature, regulating the flow of the nitrogen gas, and introducing oxygen gas and carbon dioxide into the reference electrode to balance the gas; and finally, connecting to an external circuit to start experiment. The device for realizing the testing method is a half-cell reaction device and comprises a half-cell reactor and a gas preheater, two electric heating devices are respectively used for carrying out temperature control on the half-cell reactor and the gas preheater, and a rotatable support structure is used for supporting and fixing the half-cell reaction device and the electric heating devices and realizing the dumpage of molten carbonate in the half cell. By making full use of theadvantages of the fluid bed electrode and the direct carbon fuel cell, the performance of the cell can be improved.

The invention belongs to low voltage electric equipment, it relates to a double break points breaker. It includes a base equipped with a frame structure, an acting contactor which can move forewords and backwards is mounted in inner cavum of the base, arc extinguish chamber is separately set in upper and lower part of the inner cavum of the base; insulated connecting board is fixed to the acting contactor, a connecting end which is used to connect with breaker operating device is throw out from rear end of the insulated connecting board; the upper and lower end of the acting contactor are upper contactor and lower contactor, two pieces of horizontal insulated flash barrier are fixed between the upper contactor and the lower contactor; upper statistic contactor and lower statistic contactor are set on the wall of the base which is at frontage of the acting contactor, the position of the upper contactor and lower contactor is corresponding with the upper contacting end and lower contacting end of the acting contactor; two insert grooves are set in two bases which is between the upper statistic contactor and lower statistic contactor, two insulated flash barriers which is connected with acting contactor are separately inserted into the two grooves. The invention is simple and reliable to use.

The invention provides a roller device capable of piecewise independently supplying air and exhausting air, wherein the roller is composed of two or more than two rollers which are mutually connected with each other and an independent air-supply pipe and an air-exhaust pipe are set on each roller and a wind isolation plate is set between the two connected rollers. The roller device can realize the control mode of piecewise independent speed-regulation, piecewise temperature-control, piecewise damp-control, piecewise independent air-supply and independent air-exhaust, thereby effectively adjusting and controlling the tobacco processing technique index, thus the good tobacco taste, fragrance and quality can be obtained.

The invention discloses a gel curing solution and a preparation method thereof. The gel curing solution comprises blast furnace slag, an activating agent, a conditioning agent and water, wherein as the mass of the water is used as a reference, the masses of the blast furnace slag accounts for 40-60% of that of the water, the activating agent accounts for 1-3% of that of the water and the conditioning agent accounts for 3-6% of that of the water. The preparation method comprises the following steps: firstly dissolving the activating agent and the conditioning agent in the water; after the dissolution is completed, adding the blast furnace slag slowly; and then stirring at a high speed until the mixture is mixed uniformly. When the prepared gel curing solution is used for well cementing operation of a slim hole and a coal-seam gas well with low formation pressure or injection pressure, the cementing quality of two interfaces of a cemented well can be improved, thereby improving the interlayer sealing and isolating effect and preventing oil, gas and the water from moving with one another; and when the gel curing solution is used for drilling engineering leakage stopping construction and oil well water shut-off and profile control operation, the success rate of leakage stopping and the water shut-off and profile control operation can be greatly increased.

The invention discloses a power supply system for a miniature combined regenerative fuel cell. The power supply system is formed by compactly pressing a proton exchange membrane which includes a plurality of membrane electrode units and serves as a dual-function membrane electrode assembly for both electrolyzation and power generation, a bottom box which is filled with hydrogen-storage materials and electrolytic water, and taken as the hydrogen storage and the water supply, a base plate with air holes, a pole plate and a top cover. The power supply system can automatically absorb oxygen as an oxidant from the air. The membrane electrode units are connected in series in a certain order, and thereby realizing the cycle operation of electrolyzation and discharge on the same membrane. Therefore, the equipment structure is simplified and the size and the weight are reduced. The power supply system has the advantages of good cycle operation performance and stable output power, and provides a good development for the application of the miniature fuel cells in the aspect of the portable electronic products.

The invention relates to a one-plate three-field ultrathin fuel cell bipolar plate and a fuel cell stack. The bipolar plate comprises a flow field plate, one side of the flow field plate is an anode side, and the other side of the flow field plate is a cathode side; a fuel gas flow channel and a cooling liquid flow channel are arranged on the anode side of the flow field plate; an oxidizing gas flow channel is arranged on the cathode side of the flow field plate; the bipolar plate further comprises a cover plate which is arranged on the anode side of the flow field plate and used for separating the cooling liquid flow channel and the fuel gas flow channel located in the active area; the anode side of the flow field plate is used for being tightly matched with an anode sealing piece and the cover plate to form a fuel gas flow field and a cooling liquid flow field; and the cathode side of the flow field plate is used for being tightly matched with a cathode sealing piece to form an oxidizing gas flow field. The three flow fields are concentrated on one plate, so that the thickness of the bipolar plate can be greatly reduced, the volume of a galvanic pile is greatly reduced, and the volumetric specific power density of the galvanic pile is improved.

The invention provides an air conditioner which comprises a plurality of blowing systems, a plurality of air outlets and a plurality of heat exchange systems. The air outlets correspond to the blowing systems and communicate to the corresponding blowing systems; the heat exchange systems correspond to the blowing systems and each heat exchange system comprises a heat exchange device and a throttling device, the throttling devices in the same heat exchange system are connected to the heat exchange devices, and the throttling devices are adapted to throttle cold-carrying media and provide the throttled cold-carrying media to the heat exchange devices connected to the throttling devices; each blowing system is adapted to drive an air flow to exchange heat with the heat exchange device in the corresponding heat exchange system and drive the air flow to be discharged along the corresponding air outlet. The air conditioner provided by the scheme can obtain a plurality of air outlet temperatures along the air outlets, so that the problem that the air outlet temperatures are single is solved and the different demands of users can be also met. By discharging air flows of different temperatures from the air outlets, a plurality of circulating regions can be formed indoors to drive indoor air to exchange heat more fully, so that the indoor temperature is controlled more uniformly.

The invention relates to a method for preparing nuclear medicine diagnostic reagent oxygen-18 water and a device thereof. The method comprises the steps of: utilizing an oxygen isotope water industrial rectifying separation device to obtain deuterium oxygen 18 doubly-labelled water as material; carrying out steps of electrolysis, purification and filtering to obtain high-purity deuterium and high-purity oxygen-18 gas; adopting a high-temperature platinum mesh to carry out catalyzing so as to lead the high-purity deuterium to react with the high-purity oxygen-18 gas at high temperature to generate deuterium water; and adopting the high-temperature platinum mesh to carry out catalyzing to lead the high-purity oxygen-18 gas to directly react with high-purity hydrogen to obtain the highly-purified oxygen-18 water adopted as the diagnostic reagent of nuclear medicine. Compared with the prior art, the invention which not only can make full use of the deuterium oxygen 18 doubly-labelled water to prepare the nuclear medicine diagnostic reagent oxygen-18 water and utilize by-product deuterium to prepare deuterium water but also can reduce process steps, enhance quality and yielding of oxygen-18 water of nuclear medicine and reduce product cost really has simple process and better effect.

The invention provides a fuel cell bipolar plate and an electric stack. The fuel cell bipolar plate comprises an anode reactant inlet and a cathode reactant outlet arranged on the first side of the bipolar plate, an anode reactant outlet and a cathode reactant inlet arranged on the second side of the bipolar plate, a coolant inlet arranged on the third side of the bipolar plate and a coolant outlet arranged on the fourth or third side of the bipolar plate. An anode reactant channel and a cathode reactant channel extend in the direction from the first side to the second side. The coolant channel includes a plurality of coolant sub-channels communicating with each other. The coolant sub-channels extend in the direction from the third side to the fourth side, wherein the flow directions of the coolant in the two adjacent coolant sub-channels are opposite. The area of the reactant inlet and outlet can be increased to prevent the coolant and the reactant from channeling each other, the length-width ratio of the bipolar plate can be adjusted to improve the mechanical strength of the bipolar plate, and the temperature gradient in the flow direction of the reactant can be realized and thusthe water-heat balance in the fuel cell can be realized.

The invention discloses a capillary water seal device for a fan and a water seal method of the capillary water seal device and relates to a water seal device and method. The capillary water seal device comprises a fan case (2), an air inlet (1), an air outlet (8), a water drainage tank (14) and a capillary water seal pipe (10), wherein a filter (3), a cooling device (4), a humidifying device (5), a heating device (6) and an air pump (7) are arranged in the fan case (2); a condensed water tray (9) which is located in the fan box (2) and used for collecting condensed water is arranged below the cooling device (4); and one end of the capillary water seal pipe (10) is communicated with the condensed water tray (9) through a water-seal water-inlet ring (15), and the other end of the capillary water seal pipe (10) is communicated with the water drainage tank (14) through a water-seal water-outlet ring (16). The invention innovatively applies the capillarity phenomenon to the water seal device, which uses the capillarity phenomenon to balance the difference between internal and external pressures so as to allow condensed water in a unit with negative pressure to flow out smoothly.

The invention provides a mobile air-cooled cold storage box, and belongs to the technical field of cold chain transportation. The mobile air-cooled cold storage box solves the problem that an existingmobile air-cooled cold storage box is poor in refrigerating performance. The mobile air-cooled cold storage box comprises a heat preservation box body and a refrigeration module arranged on the heatpreservation box body and used for refrigerating air inside the heat preservation box body, and the refrigeration module is provided with an air inlet used for sucking air flowing out from the heat preservation box body and an air outlet for discharging the refrigerated air. The mobile air-cooled cold storage box is characterized in that the upper end surface of the heat preservation box body is provided with single through holes for the air in the heat preservation box body to flow out and the refrigerated air discharged from the refrigeration module to flow in, the air inlet and the air outlet are both arranged at the single through holes and communicate with the single through holes, the position of the air inlet is higher than the position of the air outlet, and the area of the air inlet is larger than the area of the air outlet. The refrigerating effect of the mobile air-cooled cold storage box with the refrigeration module is improved.

The invention relates to the technical field of gas turbines, and discloses an ignition-supplementing combustion chamber and a gas turbine system. The ignition-supplementing combustion chamber comprises a combustion chamber shell, a flame barrel, a fuel nozzle and an igniter, wherein the combustion chamber shell is arranged in an exhaust flue behind a gas turbine, the flame barrel is located in the combustion chamber shell and comprises a main combustion region and an intermediate region which are sequentially arranged from the front end to the rear end, the fuel nozzle is arranged at the front end of the flame barrel, and the igniter is arranged on the position, opposite to the main combustion region, of the side wall of the flame barrel. The ignition-supplementing combustion chamber is arranged in the exhaust flue of the gas turbine, so that the exhaust temperature of the gas turbine system can be remarkably improved under various working conditions, the thermoelectric ratio can be effectively improved, and the theoretical adjusting range can reach 100%; and therefore, the thermoelectric ratio adjusting range of a hot and cold electric distribution type energy system based on thegas turbine can be optimized.

The invention discloses a preparation method of a navel warming patch. According to Chinese medicine theory of monarch drugs, minister drugs, adjuvant drugs and messenger drugs, Cortex Cinnamomi, FlosCaryophylli, Fructus Piperis Longi, Fructus Evodiae, and Fructus Piperis serve as the monarch drugs, Rhizoma Zingiberis, Radix Astragali, Cortex Magnoliae Officinalis, Fructus Foeniculi, Herba Paederiae, and Fructus Aurantii Immaturus serve as minister drugs, the monarch drugs are prepared into ointment pieces, the minister drugs are prepared into patch pieces, the monarch drugs and the ministerdrugs adhere to each other, and are isolated from each other by an impervious ring to prevent mixing of drug flavors, the monarch drugs are placed at the acromphalus, and have key curative effect, theminister drugs have synergistic effect, through the cooperative composition of the monarch drugs, the minister drugs and the adjuvant drugs, the function of a single drug can be fulfilled, the effects of the composition can be combined, the navel warming patch has effects of warming the middle warmer and invigorating YANG, and dispersing cold for relieving pain, meanwhile, by integrated dosage form design of the monarch drugs and the minister drugs, a closed absorption environment is formed, compared with a traditional single-layered simple attachment mode, the navel warming patch facilitatesdrug absorption, the drugs jointly achieve unique curative effect, and the paste and patch integrated dosage form design is another breakthrough of the traditional Chinese medicine.

The present invention provides a fuel cell bipolar plate and stack, comprising: an anode reactant inlet and a cathode reactant outlet located on the first side of the bipolar plate, an anode reactant outlet located on the second side of the bipolar plate and The cathode reactant inlet, the coolant inlet on the third side of the bipolar plate, the coolant outlet on the fourth or third side of the bipolar plate; the anode reactant channel and the cathode reactant channel on the first side to the second Extending in the direction of the two sides, the cooling liquid channel includes a plurality of interconnected cooling liquid sub-channels, the cooling liquid sub-channel extends from the third side to the fourth side, wherein, in the two adjacent cooling liquid sub-channels The flow direction of the cooling liquid is opposite, which can not only increase the area of ​​the reactant inlet and outlet, prevent the cooling liquid and the reactant from crossing each other, but also help to adjust the length-width ratio of the bipolar plate, improve the mechanical strength of the bipolar plate, and realize the The temperature gradient in the flow direction of the reactants realizes the hydrothermal balance in the fuel cell.

The invention discloses a manufacturing technology of a flame-retardant breathing unit for ships. A manufacturing technology of a flame-retardant core layer of a flame-retardant assembly comprises operation steps as follows: A) the diameter of the flame-retardant core layer is determined according to the requirement of the ventilation volume of a pipeline; B) the flame-retardant core layer is manufactured as follows: 1) wavy mesh belts are manufactured by the aid of a mold; 2) flat-plate-shaped mesh belts are manufactured by the aid of a mold; 3) one wavy mesh belt and one flat-plate-shaped mesh belt are closely wound to form one core layer and cannot be loosened, and the surface of the core layer is flat, smooth and free of burrs; sizes of pores in the core layers of the flame-retardant core layer are completely uniform and consistent, and blockage is avoided; 4) the two core layers are combined into the flame-retardant core layer, and a runner in one core layer and a runner in the other core layer are arranged to form an angle; 5) all the pores of the flame-retardant core layer are required to be unblocked. With the technology, a breathing accessory of an oil compartment has a breathing function and a flame-retardant function, the pressure in the oil compartment is kept in a certain range in usual, and the oil compartment is protected.

The invention discloses a novel power-free integrated condensation separation device. The novel power-free integrated condensation separation device comprises an inner shell, a heat exchanging pipe, agas channel, an outer shell, an upper pipe plate, a lower pipe plate, a recovery side liquid level meter, a reflux side liquid level meter, a reflux execution mechanism, a recovery execution mechanism, a reflux ratio executor, a U-shaped balance non-return device, a liquid-liquid phase separator, a liquid storage chamber, a heat exchanging medium outlet, a heat exchanging medium inlet, a gas phase temperature interface, a liquid temperature interface, a gas phase inlet, a second inner cavity, a communication port, a reflux port, a recovery port, a first inner cavity and a valve connecting port. The novel power-free integrated condensation separation device has the advantages that condensed liquid is collected into the liquid storage chamber under the effect of gravity; the liquid storagechamber is provided with the valve connecting port, and the device is applicable to small test devices and industry; the device is small in floor space, simple in structure, capable of saving energyand high in portability.

The invention discloses a manufacturing technology of a flame-retardant breathing unit for ships. A manufacturing technology of a flame-retardant core layer of a flame-retardant assembly comprises operation steps as follows: A) the diameter of the flame-retardant core layer is determined according to the requirement of the ventilation volume of a pipeline; B) the flame-retardant core layer is manufactured as follows: 1) wavy mesh belts are manufactured by the aid of a mold; 2) flat-plate-shaped mesh belts are manufactured by the aid of a mold; 3) one wavy mesh belt and one flat-plate-shaped mesh belt are closely wound to form one core layer and cannot be loosened, and the surface of the core layer is flat, smooth and free of burrs; sizes of pores in the core layers of the flame-retardant core layer are completely uniform and consistent, and blockage is avoided; 4) the two core layers are combined into the flame-retardant core layer, and a runner in one core layer and a runner in the other core layer are arranged to form an angle; 5) all the pores of the flame-retardant core layer are required to be unblocked. With the technology, a breathing accessory of an oil compartment has a breathing function and a flame-retardant function, the pressure in the oil compartment is kept in a certain range in usual, and the oil compartment is protected.

The invention discloses a cement-dispersing retarder for a high-temperature-resistant oil well and a preparation method of the retarder. The cement-dispersing retarder comprises three structure units, namely sodium p-styrenesulfonate, methacrylic acid-2-hydroxyl ethyl ester and itaconic acid, and the viscosity-average molecular weight is 30000-50000. The preparation method comprises the following steps of (1) respectively dissolving sodium p-styrenesulfonate, methacrylic acid-2-hydroxyl ethyl ester and itaconic acid in deionized water, mixing and adjusting pH to be neutral; (2) introducing nitrogen to remove oxygen, reacting for 4-6 hours in water bath with the temperature of 50-70 DEG C based on potassium persulfate as an initiating agent; and (3) cooling obtained slightly-viscous solution, purifying, drying and grinding, thereby obtaining the cement-dispersing retarder for the high-temperature-resistant oil well. The cement-dispersing retarder disclosed by the invention has the advantages that the thickening time can be effectively prolonged under the high-temperature condition, the right-angled thickening phenomenon is obvious, the compatibility with other oil-well cement admixtures is good, the strength of cement stone can also be rapidly developed under the low-temperature condition, the preparation method is reliable in principle and simple to operate and has wide market prospect.

The invention belongs to the technical field of LED panel display, and provides a multi-color-based LED light source display structure, which comprises an LED panel and an LED support, the first side of the LED support is fixed to the LED panel, the LED panel is provided with a piece of LED light sources, the LED support guarantees the structural strength of an LED display area when the LED display area is pressed by external force, light channeling of the LED light sources is prevented, therefore, the distance between the LED light sources on the LED panel can be reduced, more LED light sources are arranged on the LED panel, the visual angle of the LED light sources is increased, and the technical effect of clearly displaying richer display content is achieved. Meanwhile, light emitted by the LED light source is scattered from the LED support and sequentially scattered to penetrate through a first color screen, a second color gauze and a third color screen cloth to emit light with uniform brightness, and the technical effect of better light scattering and the technical effect of uniform and consistent light are achieved.

The invention discloses a powder pouring device comprising a pressing mechanism, a turnover mechanism and a double-ring sealing mechanism. The pressing mechanism is used for fixing a material tank sothat an opening of the material tank can be connected with a material pouring inlet of the turnover mechanism. A material pouring outlet of the turnover mechanism is connected with a material outlet.The double-ring sealing mechanism is used for preventing pollution atmospheres of hot chambers on the two sides of the material outlet from being mixed with each other. The powder pouring device has the beneficial effects that by means of the powder pouring device, long-distance operation can be achieved and mutual mixing of toxic atmospheres can be controlled; by means of the turnover mechanism and the pressing mechanism, connecting and material pouring of the material tank and the material pouring device are achieved, it can be ensured that products can be accurately fed into a feeding tank,and the possibility that pollution materials are scattered outside the feeding tank is reduced; and meanwhile, by means of the double-ring sealing mechanism, it can be avoided that the pollution atmospheres are mixed between the hot chambers.

The invention discloses a high and low temperature all-in-one machine, which relates to a heat exchange device. The main points of the technical solution are: including a box body, a medium inlet pipe, a medium outlet pipe, a compressor for refrigeration, and a heating device for heating , the compressor and the heating device are connected with an internal heat exchanger for heat exchange, the medium inlet pipe and the medium outlet pipe are respectively connected to the inlet and outlet ends of the internal heat exchanger, and also include a medium box and an exhaust pipe. The top of the medium box is connected with a The medium adding pipe, the medium outlet pipe is located below the medium inlet pipe, one end of the exhaust pipe is connected to the inner top of the medium outlet pipe, and the other end of the exhaust pipe is connected to the inner top of the medium inlet pipe or the media box; the exhaust pipe is provided with Control its on-off exhaust valve. Even if the closing of the exhaust valve is delayed, the medium in the high and low temperature integrated machine will not be discharged from the circulation system to cause safety hazards; by setting the floating plate, the medium in the exhaust pipe will not enter the medium inlet pipe, preventing the interaction of hot and cold media run away.

The invention discloses a novel solar water mixing valve spool. The solar water mixing valve spool comprises a housing, an adjusting handle, a ceramic moving sheet and a ceramic fixing sheet, wherein the housing is provided with a containing cavity, the adjusting handle, the ceramic moving sheet and the ceramic fixing sheet are stacked in the containing cavity sequentially, the adjusting handle is provided with an upper portion and a lower portion, the upper portion is exposed out of the housing, the lower portion is connected to the ceramic moving sheet and drives the action of the ceramic moving sheet, the ceramic moving sheet is provided with a water replenishing channel and two diversion channels, the two diversion channels are respectively located on two sides of the water replenishing channel, and a hot water outlet, a hot water inlet, a cold water outlet and a cold water inlet are arranged on the ceramic fixing sheet and are used for connecting water heater pipelines. The adjusting handle is rotated, the water replenishing channel, the cold water inlet and the hot water inlet of the ceramic moving sheet are driven to be communicated or closed, and the diversion channels, the hot water outlet, the hot water inlet, the cold water inlet and the cold water outlet of the ceramic moving sheet are driven to be communicated or closed. Other valves are not required, and then the water replenishing function of a solar water heater can be achieved.

The invention discloses a processing technology of a curl-resistance PE cast film. The cast film prepared by the technology has excellent optical performance and thickness uniformity, a very high production speed can be obtained due to adoption of a quenching roller, and the form structure of the film is improved; the curl-resistance property and flatness of the film can be effectively improved, the characteristics of good curl-resistance property, good flatness and the like are achieved, meanwhile, the advantages of high production speed, high yield and the like are achieved, large batch production is facilitated, the thickness control precision of products is high, meanwhile, the thickness uniformity is good, the transparency and glossiness are made excellent synchronously, the balance performance in all directions is outstanding, all layers of melt can be uniformly distributed after spreading on a die head, mutual mixing among all layers of materials can be prevented, the overall thickness can be monitored and adjusted, and the thickness of certain key functional layers can be monitored and adjusted.