40 results about "Water vapor absorption" patented technology

The invention provides a dense high ice cloud detection method and system based on water vapor and ice crystal absorption characteristics, and the method comprises the steps: obtaining water vapor absorption spectrum band detection data, ice crystal absorption spectrum band detection data and atmospheric window region spectrum band detection data according to remote sensing image data of a meteorological satellite for a target region; calculating an ice vapor index according to the water vapor absorption spectrum detection data and the ice crystal absorption spectrum detection data; calculating a cloud vapor index according to the water vapor absorption spectrum band detection data and the atmospheric window area spectrum band detection data; and according to the ice steam index and the cloud steam index, calculating a dense high ice cloud index to identify whether the dense high ice cloud exists in the target area. According to the method, the detection and enhancement of the dense high ice cloud are realized by using the water vapor absorption spectrum detection data, the ice crystal absorption spectrum detection data and the atmospheric window region spectrum detection data, and compared with the prior art, misjudgment and interference are reduced, and the recognition accuracy of the dense high ice cloud is improved, so that weather forecast is more accurate.

An atmospheric water generator apparatus extracts water vapor from low humidity air using hygroscopic materials that alternate between hydrophilic and hydrophobic states based on temperature. A composite material of hygroscopic and thermoresponsive polymers facilitates water vapor absorption and desorption. The composite material is structured to maximize surface area. The apparatus includes a chamber with a thermal management system for absorption and desorption phases. The chamber can open, permitting air intake and exhaust during the absorption phase. The chamber can close, preventing external air flow during the desorption phase. Fans may assist air flow during both phases. The composite material is heated during the desorption phase. When heated, the composite material releases water vapor, which is then condensed and collected. Condensation may be aided by hydrophilic materials, hydrophobic materials, and a cooled surface.

The embodiment of the invention discloses a medium-wave infrared spectrum calibration method and device, electronic equipment and a program product. The method comprises the following steps: acquiring a reference water vapor absorption spectrum in a medium-wave infrared target wave band; in the medium-wave infrared target wave band, an atmospheric radiation spectrum is determined by a water vapor absorption spectrum, and the waveform stability degree of the reference water vapor absorption spectrum is higher than a set threshold value; obtaining a medium-wave infrared radiation interference signal observed by the infrared spectrum detector; determining a spectrum calibration coefficient by optimizing the deviation between an observation spectrum corresponding to the medium-wave infrared radiation interference signal and the reference water vapor absorption spectrum; and realizing the spectrum calibration of the infrared spectrum detector by using the spectrum calibration coefficient. According to the technical scheme, the medium-wave infrared band observation data is directly used, and spectrum calibration is carried out on the medium-wave infrared observation spectrum.

The utility model discloses a temperature and humidity adjusting device of a cooling machine for peanut processing, which relates to the technical field of peanut processing, and comprises a water vapor absorption filter material which is fixedly arranged at the upper end inside a temperature control bracket of the cooling machine, and the device can absorb water vapor in air to a certain extent by installing the water vapor absorption filter material, so that the temperature and humidity of the cooling machine can be adjusted. A semiconductor chilling plate is installed to be matched with a cold source exchange support so that air flowing in the device can exchange heat with the cold source exchange support, then the air temperature is lowered, the temperature of air exhausted out of the device is adjusted, and the moisture content of peanuts can be prevented from rising; meanwhile, when the air exchanges heat with the cold source exchange support, water vapor can be quickly cooled and liquefied into water drops, the dehumidification capacity of the device is further improved, and the situation that the quality of the dried peanuts is affected due to the fact that the water content of the peanuts rises is avoided.

The utility model relates to the technical field of hydrogenation product distillate oil, in particular to a hydrogenation product low-pressure separator which comprises a closed water storage tank and an air outlet pipe communicated with a low-pressure separator body, the air outlet end of the air outlet pipe penetrates into the lower portion of the water storage tank, the top face of the water storage tank is communicated with one end of an exhaust pipe, and the other end of the exhaust pipe is communicated with a drying pipe. The drying pipe is communicated with an air inlet pipe communicated with the collecting tank, and drying agent particles are arranged in the drying pipe. By means of the drying agent, water vapor can be absorbed twice in the mode of first rinsing and then drying, the water vapor can be absorbed more thoroughly, meanwhile, the service life of the drying agent can be prolonged, and consumption is reduced to a certain degree.

The present application relates to the field of optical measurement technology, disclose a kind of based on open optical path atmospheric NO3 radical measurement system and method, system includes light source module, first convex lens, first high reflectivity lens, second high reflectivity lens, detachable cavity, second convex lens and spectrometer, the present application is directly sampled to the air between high reflect lens by the design of open optical path, avoid the wall loss of NO3 radical in active sampling, to improve the sensitivity and accuracy of measurement. While introducing the design of detachable cavity, realize the flexible switching of zero air and actual atmospheric sampling. The introduction of zero-point spectral library method effectively compensates the influence of temperature and humidity change on light source and spectrometer, the spectral shift caused by environmental change is eliminated by dynamic calibration, in addition, the input of real-time water vapor absorption cross section can accurately remove the influence of water vapor absorption on NO3 radical measurement, further improve the reliability of measurement result.

This invention provides a temperature sensor for underground monitoring, comprising a temperature sensor and a circular plate. A fixing assembly is mounted on the circular plate, including a support plate and a screw pin. A tightening assembly is mounted on the support plate, including a worm gear and a first motor. A telescopic assembly is mounted inside the screw pin, including a second motor and a sleeve. A cleaning assembly is mounted at the bottom of the circular plate, including a retaining sleeve and an inner cavity. This temperature sensor for underground monitoring and its installation method can prevent organic fertilizer particles from disintegrating due to internal air expansion, ensuring the integrity of the organic fertilizer particles, preventing organic fertilizer debris, and preventing organic fertilizer from sticking together during storage. This facilitates uniform fertilization operations and allows the organic fertilizer to absorb debris, odors, and water vapor, reducing water vapor consumption and ensuring a safe air environment. It is suitable for real-time monitoring of underground temperatures.

The application discloses a laser transmission power attenuation calculation method, a power adjustment method and a system, and belongs to the technical field of laser transmission. The calculation method comprises the following steps: acquiring the precipitable water effective thickness and the effective optical thickness on a laser transmission path; calculating the water vapor absorption transmittance and the atmospheric transmittance caused by scattering by using the precipitable water effective thickness and the effective optical thickness; and calculating the attenuation power of the laser under the transmission distance by using the water vapor absorption transmittance and the atmospheric transmittance. The application has high calculation precision, strong environmental adaptability, can improve the system performance, and has a wide application prospect.

The invention discloses a water vapor concentration detection method, device and equipment and a medium, relates to the technical field of atmospheric environment monitoring, and is applied to a laser radar comprising a laser conversion assembly. The method comprises the following steps: generating first original laser and second original laser; the water vapor absorbance of the first original laser is far greater than that of the second original laser; processing the first original laser and the second original laser by using an optical fiber amplifier and a frequency doubling crystal in the assembly to obtain first target laser and second target laser; the first target laser and the second target laser are emitted to the atmosphere, and a first echo signal and a second echo signal which are reflected back are received; and filtering an environment interference signal in the first echo signal based on the second echo signal, and determining the water vapor absorption intensity of the first target laser according to the differential signal ratio and the first target laser so as to determine the water vapor concentration information in the atmosphere. And more accurate water vapor concentration detection can be carried out.

The present invention provides a method, device and electronic device for calculating microwave atmospheric transmittance, the method comprising: obtaining atmospheric data of an atmospheric sounding station, and obtaining a liquid water profile in the cloud of the atmospheric data; inputting the atmospheric data and the liquid water profile in the cloud into a millimeter wave transmission model and a Mie scattering model, and obtaining an oxygen absorption coefficient in the atmosphere, a water vapor absorption coefficient and a liquid water extinction coefficient in the cloud; obtaining the atmospheric extinction coefficient and calculating a first microwave atmospheric transmittance of the atmospheric sounding station; according to the cloud coverage, respectively calculating the first microwave atmospheric transmittance based on a first calculation method and a second calculation method, obtaining a second microwave atmospheric transmittance of a clear sky area and a third microwave atmospheric transmittance of a cloud-covered area, and obtaining a comprehensive microwave atmospheric transmittance based on the second microwave atmospheric transmittance and the third microwave atmospheric transmittance. The present invention can correct and reduce the influence of the atmosphere on microwave signals according to the comprehensive microwave atmospheric transmittance.

The present application relates to the field of infrared temperature measurement, more particularly to a temperature and humidity attenuation compensation method in infrared radiation temperature measurement, comprising: obtaining the temperature of a target object based on an infrared temperature measurement device, establishing a functional relationship between the spectral radiance, a given wavelength range and the target measured temperature, and calculating the spectral radiance corresponding to the target measured temperature and the ambient temperature respectively; also establishing a functional relationship between the water vapor absorption transmittance and the ambient temperature and humidity, and obtaining the water vapor absorption transmittance under different ambient temperatures and different ambient humidities; also deriving a correction formula of the target infrared radiation after attenuation by the ambient temperature and humidity based on the Kirchhoff's law of thermal radiation, and correcting the measured spectral radiance of the target object; finally inversely solving the real temperature of the target object. The present application can solve the problem of inaccurate infrared temperature measurement caused by inconsistent infrared radiation attenuation rules under different ambient temperature and humidity.

The present invention discloses a bimetallic organic framework material, its preparation method and application. The crystal structure of the framework material is octahedron, which is formed by the coordination of the organic ligand fumaric acid and the metal ion ligand. The metal ion ligand is zirconium ion and copper ion. Among them, the doping amount of copper ion, calculated by molar ratio, accounts for 20% - 40% of the metal ligand content. The bimetallic organic framework material of the present invention has a water vapor adsorption rate 10 - 20% higher than that without doping Cu<supgt;2+< / supgt> at each humidity gradient, and at the same time has strong thermal stability and recycling performance. After the material undergoes four cycles of high-temperature activation and water vapor absorption, it still maintains a high water absorption efficiency of 0.27 g·g<supgt;‑1< / supgt>, and only decreases by 0.5% compared with the first time. The above framework material is applied in the preparation of a water-absorbing fresh-keeping packaging film, which can regulate the humidity of the microenvironment of fruit and vegetable packaging and inhibit the growth of microorganisms, thereby increasing the shelf life of fruits and vegetables after harvest.

The gas-liquid separation device comprises a separation tank, the separation tank comprises a tank body and a sealing cover which are connected with each other, a gas inlet pipe is arranged at the bottom of the tank body, an exhaust pipe is arranged on the sealing cover, and electromagnetic valves are arranged on the gas inlet pipe and the exhaust pipe; the separation tank is filled with an adsorbent, a heating module and a controller are further arranged on the separation tank, and the heating module and the electromagnetic valves are electrically connected with the controller; during use, tail gas enters the separation tank through the gas inlet pipe, the adsorbent absorbs water vapor, and the absorbed gas is exhausted from the exhaust pipe; after the adsorbent is saturated, the air inlet pipe is closed through the electromagnetic valve, the heating module is opened for heating, the heated adsorbent releases absorbed water vapor, and the water vapor is discharged through the exhaust pipe, so that regeneration of the adsorbent is realized; separation of the adsorbent and water vapor is achieved in a heating mode, regeneration of the adsorbent is achieved on the premise that the separation tank is not opened, the difficulty of equipment maintenance is effectively lowered, and the maintenance efficiency is improved.

This invention provides a technology to improve the dehumidification efficiency of dehumidifiers. [Solution] The dehumidifier comprises a first absorption tower that absorbs water contained in the target gas into a first absorbent liquid, a first regeneration tower that releases water from the first absorbent liquid that has absorbed water in the first absorption tower and returns the first absorbent liquid that has released water back to the first absorption tower, a cooling unit that generates cooling by generating water vapor and cools the first absorbent liquid that returns from the first regeneration tower to the first absorption tower, and a second absorption tower connected to the cooling unit that absorbs the water vapor generated in the cooling unit into a second absorbent liquid.

This utility model discloses a new energy-saving heat recovery system, belonging to the field of heat recovery technology. It includes a tower, and a regeneration component comprising two sets of symmetrically arranged top plate heat exchangers and two sets of separation towers connected within the tower. A gas phase pipeline connects the top plate heat exchangers and the circulating tower. A compressor compresses and heats the water vapor generated by the top plate heat exchangers and separation towers, introducing the top gas phase into the top plate heat exchangers. The circulating tower's top gas phase heats the water in the heat exchangers to boiling. Forced circulation occurs between the top plate heat exchangers and the separation towers via a circulating pump, generating water vapor that absorbs the latent heat of vaporization from the circulating tower's top gas phase. After releasing its latent heat of vaporization, the circulating tower's top gas phase condenses into a liquid state at a high temperature of 138°C. The water vapor generated by the top plate heat exchangers and separation towers is then introduced into the compressor. Through the cooperation of the compressor and the top condensate preheater, the water vapor is compressed to a pressure of 1000 kPa and a temperature of 175.38°C, supplying the reboiler.

A temperature sensor for underground monitoring provided by the present invention comprises a temperature sensor and a circular plate, the circular plate is provided with a fixing assembly, the fixing assembly comprises a support plate and a screw pin, the support plate is provided with a screwing assembly, the screwing assembly comprises a worm and a first motor, the inner side of the screw pin is provided with a telescopic assembly, and the telescopic assembly is connected with the screw pin. The telescopic assembly comprises a second motor and an edge sleeve, a cleaning assembly is installed at the bottom of the circular plate, and the cleaning assembly comprises a clamping sleeve and an inner cavity. According to the temperature sensor for underground monitoring and the installation method thereof, organic fertilizer particles can be prevented from being expanded and scattered due to internal air expansion, and the integrity of the organic fertilizer particles is guaranteed; organic fertilizer chippings are prevented, the situation that the organic fertilizer is adhered together during storage is prevented, subsequent uniform fertilization operation of the organic fertilizer is facilitated, the chippings, peculiar smell and water vapor can be absorbed through the organic fertilizer, consumption of the water vapor is reduced, air environment safety is guaranteed, and the underground temperature monitoring device is suitable for being used for real-time monitoring work of the underground temperature.

The invention relates to the technical field of infrared temperature measurement, in particular to a temperature and humidity attenuation compensation method in infrared radiation temperature measurement, which comprises the following steps of: acquiring the temperature of a target object based on an infrared temperature measurement device, and establishing a function relationship among a spectral radiation quantity, a given wavelength range and a target actually measured temperature; spectral radiation quantities corresponding to the target actual measurement temperature and the environment temperature are calculated respectively; a function relation between the water vapor absorption transmittance and the environment temperature and the environment humidity is also established, and the water vapor absorption transmittance under different environment temperatures and different environment humidity is obtained; a correction formula of the target infrared radiation after attenuation of the environment temperature and the environment humidity is deduced based on the Kirchhoff's thermal radiation law, and the actually measured spectral radiation quantity of the target object is corrected; and finally, inversely solving the real temperature of the target object. According to the invention, the problem of inaccurate infrared temperature measurement caused by inconsistent infrared radiation attenuation rules under different environment temperatures and humidity can be solved.

The invention belongs to the field of oil-gas exploration, and discloses an aquifer identification system and method based on infrared spectrum gas logging. In the conventional oil-gas exploration water layer identification, the infrared spectroscopy is adopted to replace a gas chromatographic method to analyze the wellhead gas removed from the drilling fluid, and the method has the advantages of being rapid, safe, sensitive, easy to maintain and the like. In addition, the infrared spectrum of the well head gas further comprises water vapor absorption peaks, and the aquifer recognition method established according to the characteristics of the water vapor absorption peaks can effectively avoid the problem of weak aquifer recognition signals under the complex conditions of heterogeneous, low-porosity-permeability, low-resistance oil and gas reservoirs and the like, and greatly improves the coincidence rate of aquifer recognition. By establishing the weighted composite factor and combining the direction, the threshold value and the volatility of the water vapor absorption peak of the infrared spectrum of the wellhead gas, the accuracy and the redundancy of identification are improved.

The invention discloses an underway shipborne observation system and method, the system comprises an ultrasonic anemograph, a closed-circuit measurement system, an auxiliary meteorological observation system, a motion monitoring system and a data processing and storage unit, and the closed-circuit measurement system comprises a drying pipe, a first vacuum pump, a gas analyzer and a second vacuum pump which are communicated in sequence. The meteorological mast of the bow of the current scientific examination ship is fully utilized, observation cost is reduced, observation equipment and the installation position of the observation equipment are scientifically selected, data sampling sufficiency and accuracy are guaranteed, observation errors caused by the fact that vertical airflow is affected by the ship body are avoided through the design of the installation height, and observation accuracy is improved. A closed-loop measurement system is combined on observation tests, closed-loop double-pump sampling is adopted, vertical wind speed information is reserved to the maximum extent, the influence of ocean droplets is reduced while the water vapor absorption effect is avoided through closed-loop type drying sampling, the ocean greenhouse gas exchange rate is effectively observed, and the influence of ship body shaking on a ship-borne observation system is avoided.

The invention relates to the technical field of drying equipment, and discloses drying equipment and a drying method for polyimide film production. The drying equipment comprises a device body, an air inlet pipeline, a detection mechanism and an air outlet pipeline; the air inlet pipeline and the air outlet pipeline are connected through a detection mechanism, a sealing bin door is movably installed on the front face of the device body, and a drying bin is formed in the device body. In the working process, pressure change caused by water vapor content change in drying air can be detected in real time through the detection mechanism, and transmission is driven according to the pressure change to adjust the position of the water vapor absorption rod; the contact area between the water vapor absorption rod and the drying air is adjusted by adjusting the position of the water vapor absorption rod, the balance of the water vapor content in the drying air is kept, and cracks, caused by the water vapor content, of the polyimide film in the drying process are prevented.

The sealing structure suitable for the low-altitude aircraft comprises a rotating shaft, the rotating shaft is coaxially sleeved with a sealing lining, the rotating shaft is provided with a plurality of sealing labyrinth teeth arranged in the axial direction, the outer circumferential faces of the sealing labyrinth teeth are in clearance fit with the inner ring face of the sealing lining, and the sealing lining is provided with a rotating piece and a protruding piece; the rotating part is located in front of a gap between the sealing labyrinth and the sealing lining, the rotating part can scatter water flowing to the gap between the sealing labyrinth and the sealing lining through rotation to enable the water to change the flowing direction, and the protruding part is located behind the rotating part and also located in front of the gap between the sealing labyrinth and the sealing lining. The protruding piece protrudes towards the gap between the sealing labyrinth and the sealing bush and is used for blocking water flow towards the gap between the sealing labyrinth and the sealing bush. The problem of absorbing liquid water and water vapor of the low-altitude aircraft can be effectively solved, the sealing effect of the labyrinth structure is kept, and the leakage amount of the structure is reduced.

Described herein are multilayer moisture management assemblies for reversible absorption of water vapor where the assemblies regulate relative humidity in microclimates proximate the assemblies. The moisture management assemblies absorb water vapor from air when the relative humidity level in the air is at or above a threshold level, thus retarding further elevation of the relative humidity. Articles incorporating the assemblies are also disclosed.

The utility model relates to the technical field of bottle body sterilization and drying, and discloses laminar flow type hot air circulation sterilization equipment which comprises a conveying groove, and a conveying belt is mounted in a cavity of the conveying groove; an air outlet pipe and an air inlet pipe are installed on the two sides of the outer wall of the drying box in a penetrating mode; the laminar flow circulation assembly comprises a circulation pipe, a water vapor absorption unit and an air guide unit; the circulating pipe is in a U shape and fixedly installed on the outer wall of the drying box, the air guide unit comprises an air gathering pipe and an ejection pipe, and the water vapor absorption unit comprises a rectangular box and a containing box. Hot air enters the drying box cavity through the air inlet pipe to dry bottle bodies, by arranging the laminar flow circulation assembly, the hot air entering the drying box cavity flows in a multi-layer circulation mode, the drying efficiency of the bottle bodies is improved, by arranging the water vapor absorption unit, water vapor carried in the hot air is absorbed, and the drying effect is further improved; and the air guide unit is arranged to dry the interior of the bottle body cavity.

The invention relates to the technical field of carbon dioxide monitoring, and discloses a carbon dioxide monitoring protective mask. The mask comprises a base layer and a flexible composite film layer located on the inner side of the base layer. Wherein the flexible composite film layer sequentially comprises a water vapor absorption layer and a detection layer from inside to outside, and the detection layer comprises a carbon dioxide detection film and a humidity detection film which are located on the same plane; the detection layer is connected with the detection unit; the detection unit obtains the carbon dioxide concentration by monitoring the resistance change of the carbon dioxide detection film and the humidity detection film in real time; the humidity detection film comprises a polyacrylate matrix with a through hole structure and an alkyl chain modified carbon nanomaterial embedded in the hole wall of the polyacrylate matrix. The carbon dioxide monitoring protective mask can monitor the concentration of carbon dioxide in exhaled air in real time, and the response efficiency is high; the detection precision and the adsorption saturation concentration of carbon dioxide are improved through the arrangement of the structure, and the application range is wide.

The present application relates to a kind of anesthetic pipeline filters of independent channel of inhalation and exhalation, including a gas inlet connector;And a gas outlet connector, the gas inlet connector and gas outlet connector are symmetrically arranged;And filter main body, filter main body is communicated and arranged between gas inlet connector and gas outlet connector, filter main body includes shell, and gas inlet connector and gas outlet connector are arranged at both ends of shell;And parallelly arranged in shell, gas inlet channel and gas outlet channel with built-in one-way valve, gas inlet connector, gas inlet channel and gas outlet connector are positively communicated by one-way valve, and gas outlet connector, gas outlet channel and gas inlet connector are reversely communicated by one-way valve;And filter disc, the filter disc is connected in shell, to filter the gas in gas inlet channel and gas outlet channel, and the minimum envelope circle diameter of gas inlet channel and gas outlet channel is less than the diameter of filter disc.The present application can make up the risk of inhalation resistance increase caused by filter membrane water vapor absorption of existing filter inhalation and exhalation same cavity.

The invention relates to the technical field of optical measurement, and discloses an atmosphere NO3 free radical measurement system and method based on an open light path, and the system comprises a light source module, a first convex lens, a first high-reflectivity lens, a second high-reflectivity lens, a detachable cavity, a second convex lens and a spectrometer. Air between high-reflectivity lenses can be directly sampled, and the wall loss of NO3 free radicals in active sampling is avoided, so that the sensitivity and accuracy of measurement are improved. Meanwhile, the design of a detachable cavity is introduced, so that flexible switching between zero air sampling and actual atmosphere sampling is realized. The introduction of the zero spectrum library method effectively compensates the influence of temperature and humidity changes on the light source and the spectrometer, the spectrum shift caused by environmental changes is eliminated through dynamic calibration, in addition, the input of the real-time water vapor absorption cross section can accurately remove the influence of water vapor absorption on NO3 free radical measurement, and the reliability of the measurement result is further improved.

The utility model relates to the technical field of bridge frames, and discloses a fireproof bridge frame with a drainage function, which comprises a bridge frame upper shell, a bridge frame lower shell is movably clamped at the lower end of the bridge frame upper shell, and the clamped part of the bridge frame upper shell and the bridge frame lower shell is fixed through a bolt. A plurality of ventilation windows distributed at equal intervals are fixedly connected to the lower ends of the two sides of the bridge upper shell, mounting plates are fixedly connected to the lower ends of the inner walls of the two sides of the bridge lower shell, a cavity formed between the inner wall of the bottom side of the bridge lower shell and the mounting plates serves as a drainage layer, and a plurality of water vapor absorption boxes are fixedly connected to the inner wall of the top side of the bridge upper shell. The fire-proof bridge integrates drainage and fire prevention, effectively eliminates internal accumulated water, prevents cables from being affected with damp and faults, is provided with the fire-proof plate and the water vapor absorption box which are easy to install and replace, ensures safe and stable operation of the cables in a humid environment, and improves the safety of the cables. The maintenance cost is reduced.

The utility model discloses drying equipment which comprises a drying box, a heater is installed at the bottom end in the drying box, a plurality of storage frames are fixed in the drying box, a water storage box is placed on the ground on one side of the drying box, a water vapor absorption box communicated with the water storage box is fixed to the upper side of the water storage box, and a circulating air pump is installed at the top of the drying box. An exhaust pipe inserted into the drying box is installed on the circulating air pump, an exhaust pipe inserted into the water vapor absorption box is installed on the circulating air pump, a backflow guide pipe inserted into the drying box is installed at the lower end of the water vapor absorption box, and a water vapor absorption mechanism is detachably installed in the water vapor absorption box; and an extrusion mechanism for extruding the water vapor absorption mechanism is mounted on the water vapor absorption box. According to the wood drying device, wood is conveniently dried, moisture in high-temperature steam generated during drying is conveniently absorbed, the high-temperature steam is conveniently recycled, and therefore the heat utilization rate is increased.

The utility model relates to the technical field of drying ovens, in particular to a hot air circulation vacuum drying oven, which is convenient for quickly drying a small to-be-dried piece, filtering air, absorbing water vapor and replacing and installing a filter screen, and improves the practicability and the drying efficiency and quality. Comprising a hot air circulation mechanism and a vacuum mechanism. The hot air circulating mechanism is mounted on the switching mechanism, the filtering mechanism is mounted at the top end of the inner wall of the switching mechanism, the vacuum mechanism is mounted at the top end of the switching mechanism, the rotating mechanism is mounted in the switching mechanism, and the storage mechanism is mounted on the rotating mechanism; opening and closing are facilitated through the switching mechanism, the hot air circulation mechanism dries the workpieces, and the filtering mechanism filters air dried by the hot air circulation mechanism and absorbs water vapor.

The invention belongs to the technical field of water vapor content observation by a microwave radiometer, and particularly relates to a method for improving integral water vapor content observation by the microwave radiometer. The problem that an existing radiometer is low in water vapor observation precision, and high-precision forecasting of cloudy and rainy weather is difficult is solved. The method comprises the following steps: S1, according to a troposphere atmosphere microwave remote sensing principle, atmospheric refraction error correction and a principle of observing water vapor content by using a microwave radiometer, determining different channels required by inversion of the water vapor content, namely a water vapor absorption channel and a liquid water channel; s2, an ITU-R P.676 proposal: an attenuation model of radio waves in the atmosphere is used for calculation, and the channel selected in the step S1 and the corresponding weight function, the total atmospheric attenuation, the ground atmospheric absorption coefficient and the atmospheric average temperature are calculated; and S3, substituting the calculated amount in the step S2 and the brightness temperature observed by the microwave radiometer into a calculation formula for observing the atmospheric moisture delay of the troposphere by the microwave radiometer, and calculating the atmospheric moisture delay of the troposphere.