900 results about "Gas phase" patented technology

The invention discloses a method and a system for identifying mixed gas in transformer oil, a product and a medium, and relates to the technical field of testing or analyzing materials by means of measuring chemical or physical properties of the materials, and the method comprises the following steps: acquiring an internal structure diagram of a transformer, determining spatial position relations of parts and corresponding temperature distribution characteristics, and obtaining solubility differences of different spatial positions according to the spatial position relations and the corresponding temperature distribution characteristics. During operation, mixed gas concentration data of a plurality of detection points are collected, initial gas concentration data are recorded when an operation threshold range is deviated, and gas concentration change data are corrected according to solubility differences of different temperature zones. Calculating gas concentration space-time distribution characteristics, and determining a gas accumulation area according to the gas concentration space-time distribution characteristics and a space position relation. And separating the mixed gas components by using a gas chromatographic method, comparing preset gas types with the content of each component, and determining the corresponding gas type of each internal region. By implementing the method, the accuracy of identifying the types of the mixed gas in the transformer oil can be improved.

The invention relates to the technical field of reactors, and discloses a uniform gas-liquid distribution suspended bed reactor for heavy oil hydrogenation, which comprises a reactor shell, a gas-liquid distribution disc is horizontally arranged at the lower end of an inner cavity of the reactor shell, a Venturi annular gas-liquid diffuser is arranged on the gas-liquid distribution disc, and a pre-distribution chamber is formed at the bottom of the gas-liquid distribution disc; the Venturi annular gas-liquid diffuser comprises an outer gas guide pipe arranged on the gas-liquid distribution disc in a penetrating mode. According to the Venturi annular gas-liquid diffuser, through the synergistic effect of a liquid-phase flow annular nozzle and a gas-phase flow annular nozzle, a liquid phase sprayed out at a high speed is actively sheared and broken relative to a low-speed gas phase, and uniform small bubble groups can be generated, so that the gas-liquid contact area is greatly increased; the dissolution rate and the mass transfer efficiency of the hydrogen into the heavy oil are remarkably improved, so that the hydrogenation reaction depth and the product quality are directly improved, and meanwhile, the catalyst in a catalyst suspended bed reaction zone is effectively protected.

A thermal plasma can be generated using a pair of electrodes spaced apart from each other by a gap along a first direction. One or more reactants can be conveyed into and / or through at least a portion of the generated plasma. For example, the portion of the generated plasma can subject the reactant(s) to a temperature of at least 1000 K. As a result, the one or more reactants can undergo a thermochemical reaction that converts the one or more reactants into one or more products.

The invention relates to the technical field of hydrogen energy conveying and material performance testing, in particular to a testing structure for hydrogen permeation testing in a high-pressure gas-phase hydrogen environment and an installation method and application of the testing structure. The testing structure comprises a sample body and an insulation sealing assembly, and the sample body is of a double-step disc structure; the uppermost edge of the first sealing insulation assembly is flush with the upper end face of the cylindrical platform, the sample body is installed on the inner side of the first sealing insulation assembly in a matched mode, the second sealing insulation assembly is in a shape with an upward opening, and the first sealing insulation assembly is installed in the second sealing insulation assembly in a matched mode. The test surface of the sample body of the test structure and the gas main flow keep a consistent flow velocity field, and when the test structure is used for testing, the permeation behavior of the hydrogen flow on the material surface can be truly reflected; all the clamping and conducting structures are arranged outside the pipe wall of the test pipeline or at the left part of the sample body, so that flow field disturbance is prevented from being introduced into a main airflow path.

The invention discloses a high-gas-liquid-ratio gas-liquid two-phase flow and liquid holdup measurement method and device based on three-dimensional differential pressure, and the method comprises the steps: applying a centrifugal force to a gas-liquid two-phase flow through a centrifuge, and generating a stable gas nucleus-liquid ring separation structure; measuring radial differential pressure, axial differential pressure, temperature and pressure values of the centrifuge in real time; establishing a liquid holdup calculation model based on the differential pressure ratio of the radial differential pressure and the axial differential pressure, and obtaining the liquid holdup according to the liquid holdup calculation model; calculating a friction coefficient and corrected gas phase density according to the temperature and pressure values; and based on the mapping relation between the axial differential pressure and the gas phase apparent velocity and the gas state equation, the gas-liquid two-phase flow is calculated according to the liquid holdup, the friction coefficient and the corrected gas phase density. According to the invention, a high-precision, separation-free and fast-response industrial-grade solution is realized, and a new-generation measuring tool is provided for the key fields of shale gas exploitation, submarine oil and gas pipeline transportation and the like.

The utility model relates to a liquid hydrogen storage system which comprises an integrated hydrogen storage device and a hydrogen storage medium, the integrated hydrogen storage device comprises a liquid storage tank for storing a hydrogen storage medium, a gas storage tank for storing hydrogen, a reactor connected with the output ends of the liquid storage tank and the gas storage tank, a condenser connected with the reactor, a gas-liquid separator connected with the output end of the condenser, a gas compressor and a gas buffer tank, and one or more unsaturated aromatic hydrocarbons or heterocyclic unsaturated compounds with a saturated vapor pressure of more than 1 kPa and a temperature of 20 DEG C. The gas-phase storage medium of the liquid hydrogen storage system sequentially passes through the condenser, the gas-liquid separator, the gas compressor and the gas buffer tank, so that a hydrogen pressurizing, cooling and refluxing process is realized, a liquid hydrogen storage material can be effectively recycled, and the purity of hydrogen can be ensured.

The invention relates to the technical field of data processing, in particular to a boron-11 electronic gas analysis method for trace impurity recognition, which comprises the following steps: acquiring a historical time sequence data sequence of the concentration of each gas phase element in a container for storing boron-11 electronic gas at the current monitoring moment; periodically dividing each historical time sequence data sequence to obtain suspected abnormal data in each data segment; according to suspected abnormal data in the recent time sequence data sequence of each gas phase element concentration, the recent monitoring data distribution change abnormal degree and the multi-type correlation change abnormal degree of each gas phase element concentration are obtained, and a self-adaptive concentration threshold value at the current monitoring moment is correspondingly obtained; according to the self-adaptive concentration threshold value corresponding to the concentration of each gas phase element, trace impurity abnormity monitoring is carried out on the boron-11 electron gas at the current monitoring moment, and the accuracy of trace impurity abnormity monitoring is improved by dynamically adjusting the fixed threshold value.

The invention provides a reactor and a dual-light-source mass spectrum device for in-situ detection of gas-phase species in a catalytic reaction. The reactor comprises a control part, a first tube body and a second tube body, the control part comprises a first shell and a switching piece; the first shell is provided with a first channel and a second channel which are arranged in the first direction. The switching piece is arranged between the first channel and the second channel; the first pipe body extends in the first direction and is located on the side, away from the second channel, of the switching piece. The first pipe body is communicated with the first channel; the second pipe body extends in the first direction and is partially located in the second channel. The second pipe body is connected with the first shell and can move in the first direction relative to the first shell. The switching piece moves relative to the first shell to control connection and disconnection of the first channel and the second channel. When the first channel communicates with the second channel, the second pipe body is allowed to partially extend into the second pipe body, and when the first channel is isolated from the second channel, the second pipe body is located on the side, away from the first channel, of the switching piece. The application of the reactor realizes material replacement on the premise of not breaking vacuum.

The present disclosure relates to an active heat dissipation apparatus including a thermal conduction panel body having a refrigerant flow space in which a refrigerant is stored and flows, in which the refrigerant flow space includes a first refrigerant flow path including a press-fitting end positioned adjacent to a press-fitting portion provided on a rear surface portion of a heat dissipation housing main body that is a heat dissipation target, the first refrigerant flow path having upper and lower ends coupled in a gravitational direction or coupled to be inclined with respect to the gravitational direction with respect to the press-fitting portion to define a vaporization zone in which the refrigerant changes from a liquid phase to a gaseous phase, and a plurality of strength reinforcement portions formed in a condensation zone other than the first refrigerant flow path and disposed and spaced apart from one another in a predetermined pattern to guide a flow of a liquid refrigerant condensed in the condensation zone.

The utility model discloses a device for acquiring alloy gas-liquid phase equilibrium data under negative pressure. The device comprises a gas-liquid phase circulating unit, a negative pressure acquisition and control unit, a heat source acquisition and control unit, a circulating water acquisition and control unit and a product cooling unit, the device has the characteristics of simple structure, convenience in operation and capability of accurately measuring gas-liquid phase equilibrium data in a negative pressure state, a circulating water cooling device is only arranged in the gas-liquid phase circulating reaction tank, so that a sealing gasket is protected from being damaged, the air tightness of equipment is ensured, and the liquid phase reactor and the upper and lower ends of a condensation collection cover are surrounded by a heat insulation layer, so that the gas-liquid phase equilibrium data can be accurately measured. The problem that gas-phase substances are directly solidified at the bottom of the gas-phase condensation collecting cover in a solid state and cannot form circulating balance between gas and liquid phases is fundamentally solved, and the normalization of gas-phase and liquid-phase total substance components is achieved on the basis of the gas-phase and liquid-phase balance principle.

The present invention relates to a method for manufacturing a part (1) with improved resistance to oxidation and high-temperature corrosion, comprising at least the deposition of a non-cracked crystalline β-Yb2Si2O7 environmental barrier layer (7) on an at least partially ceramic matrix composite material (3), wherein the environmental barrier layer is deposited by chemical vapour deposition from a gas phase comprising a precursor mixture of (a) a compound A of formula SiClxHy, in which x is an integer from 1 to 4 and y is an integer from 0 to 3, with x + y = 4, and (b) elementary ytterbium or ytterbium(III) chloride, and wherein, during deposition, a temperature between 1100°C and 1300°C and a pressure of 150 mbar or less are imposed.

The invention discloses a method for calculating the homogeneous temperature of a fluid inclusion homogeneous as a liquid phase. The method comprises the following steps: by heating a rock slice of a target fluid inclusion, acquiring multiple groups of fluid inclusion temperature data and corresponding fluid inclusion gas-liquid ratio data after a gas phase in the fluid inclusion begins to change; according to the obtained multiple sets of fluid inclusion temperature data and the corresponding fluid inclusion gas-liquid ratio data, a relation model of the fluid inclusion gas-liquid ratio and the fluid inclusion temperature is established; and calculating the uniform temperature of the target fluid inclusion according to the relation model of the gas-liquid ratio of the fluid inclusion and the temperature of the fluid inclusion. According to the method, the time for obtaining the uniform temperature of the liquid-phase fluid inclusion is shortened, the efficiency for obtaining the uniform temperature of the fluid inclusion is improved, and particularly, the method has good practical value in the field of calculation of the uniform temperature of the high-temperature and ultrahigh-temperature fluid inclusion.

The invention discloses a liquid-gas phase change flexible actuator based on solid-liquid phase change regulation and control. The actuator comprises a strip-shaped driving layer, a heat insulation layer and a variable stiffness layer which are tightly stacked in sequence, and every two adjacent layers of the driving layer, the heat insulation layer and the variable stiffness layer are fixedly connected; the driving layer is driven to deform by driving the heating wire, the rigidity-variable layer adjusts the rigidity of deformation at different positions of the driving layer through the rigidity adjusting and controlling heating wire, deformation and adjustment of any shape of the liquid-gas phase change flexible actuator are achieved through cooperation of the driving layer and the rigidity-variable layer, and therefore different working modes are achieved. According to the liquid-gas phase change flexible actuator based on solid-liquid phase change regulation and control, repeated and reversible regulation and control deformation of the actuator can be achieved, and the liquid-gas phase change flexible actuator has the advantages of being diversified in deformation form, high in response speed and low in energy consumption for keeping deformation and has a large application prospect.

The invention discloses a spontaneous imbibition gas production method and system for a tight gas reservoir, particularly relates to the technical field of yield increase in oil-gas field development, and is used for solving the problem of gas flow channel blockage caused by mismatching of liquid phase suction and gas output time sequences in a soaking process in the prior art. According to the method, a dynamic balance mechanism of imbibition power and gas output power is established, double chemical agents are adopted to cooperatively regulate and control the imbibition process and gas flow channel maintenance, and the well opening opportunity is accurately determined based on the pressure recovery feature recognition technology to achieve efficient gas phase replacement of the tight gas reservoir. Firstly, reservoir rock physical property parameters and fluid property parameters are obtained, a dynamic equilibrium coefficient is calculated, and the optimal concentration of a first chemical agent and the optimal concentration of a second chemical agent are determined; injecting the chemical agent into the fracturing fluid for hydraulic fracturing, and shutting in the well for soaking, so that the chemical agent forms a wetting modified layer and an interfacial tension adjusting film in the reservoir; the characteristic points established by the gas-phase flow channel are identified by monitoring a pressure recovery curve, and production is started to realize efficient gas recovery.

The application relates to the technical field of hydrogen energy transportation and material performance testing, and relates to a test structure for hydrogen permeation testing under a high-pressure gaseous hydrogen environment, a mounting method and application thereof. The test structure comprises a sample body and an insulating sealing assembly, and the sample body is in a double-stage disc structure. The uppermost edge of the first sealing insulating assembly is flush with the upper end surface of the cylindrical platform, and the sample body is matched with the inner side of the first sealing insulating assembly for installation. The second sealing insulating assembly is in an open-upward shape, and the first sealing insulating assembly is matched with the second sealing insulating assembly for installation. The test surface of the sample body of the test structure is kept consistent with the flow field of the gas main stream, and when the test structure is used for testing, the permeation behavior of the hydrogen flow to the material surface can be truly reflected. All clamping and conducting structures are arranged on the outer part of the pipe wall of the test pipeline or the left part of the sample body, so that flow field disturbance is avoided in the main path of the gas flow.

The invention provides a method for growing a 1T-TaS2 single crystal by using iodine as a transport agent through a vapor transport method, and belongs to the field of single crystal preparation. The method comprises the following steps: (1) preparing a TaS2 polycrystal through repeated sintering by a solid-phase reaction method, and (2) uniformly mixing the TaS2 polycrystal with a transport agent I2, and preparing the 1T-TaS2 single crystal by a chemical vapor transport method. The principle of the method is that a solid raw material reacts with a transport agent in a high-temperature region (source region) to generate a gaseous intermediate product. The gas-phase component circulates in the tube through concentration gradient to realize continuous transportation, and finally in a low-temperature region (growth region), the gaseous compound moves in a balanced manner due to temperature difference to generate reverse reaction, and target single crystals are separated out. The 1T-TaS2 single crystal grown by the method has high quality, and is suitable for further research on physical properties such as charge density wave and the like of the 1T-TaS2 single crystal.

The present invention belongs to the field of toluene diisocyanate separation and recovery, and specifically relates to a TDI distillation residue separation and recovery device and a TDI distillation residue separation and recovery method. The method comprises: a) passing the TDI distillation residue into a dryer for drying to obtain a high-temperature TDI vapor flow and flowing solid tar particles; the high-temperature TDI vapor flow is then passed into a novel gas chamber for separation; b) the separated high-temperature TDI vapor flow obtained in step a is conveyed through a gas phase conveying pipe into a spray tower for rapid cooling to obtain a gaseous vapor flow and a liquid material flow; c) a portion of the liquid material flow obtained in step b is cooled and circulated to the spray tower, and the remaining portion is conveyed downstream as a product. The method of the present invention not only ensures a high yield of the resulting TDI product, but also solves the problem of clogging of separation and refining-related equipment in the entire process, such as the drying device.

The invention discloses a quaternary ferrocolumbium cobalt sulfide crystal, a preparation method and application, and belongs to the technical field of magnetic materials, the quaternary ferrocolumbium cobalt sulfide crystal has remarkable in-plane and out-of-plane magnetic anisotropy, and the chemical general formula of the quaternary ferrocolumbium cobalt sulfide crystal is Nb3 (Fe, Co) S6; the preparation method comprises the following steps: (1) preparing and packaging raw materials; (2) vacuum packaging; (3) carrying out CVT reaction; and (4) cooling and sampling. An improved double-temperature-zone chemical vapor transport (CVT) method is adopted, and a proper transport agent is selected, so that a multi-component raw material can be transported and recrystallized in a gaseous form at a relatively low temperature, and a single crystal with uniform components and a complete structure is obtained. The material can be applied to spintronics devices, high-density magnetic storage units and magnetic sensors; and a new platform is provided for researching complex magnetic interaction, magnetic anisotropy sources, potential superconductivity, topological properties and the like.

This application provides a liquid-source gas-phase transport system and method, relating to the semiconductor field. The liquid-source gas-phase transport system includes a storage device, a reaction device, and a transport pipeline. The storage device includes a container and a container heating assembly, which heats the container to vaporize the liquid raw material within it. The transport pipeline connects the container and the reaction chamber of the reaction device. The transport pipeline includes an inner tube, an outer tube sleeved around the inner tube, and a pipeline heating assembly disposed outside the outer tube. A protective gas is filled between the outer and inner tubes, and the interior of the inner tube is used to transport the gaseous raw material. The liquid-source gas-phase transport system and method provided in this application can uniformly heat the raw material, reducing the likelihood of condensation and particulate contamination. Furthermore, the liquid-source gas-phase transport system and method offer superior safety.

This invention relates to the technical field of organometallic compound production, and discloses a method and apparatus for synthesizing a homogeneous organic molybdenum-containing compound and its application. The method is implemented in a system containing a first reaction unit and a second reaction unit. The first reaction unit comprises at least two batch reactors connected in series. The batch reactors are cylindrical structures containing an inner cylinder and an outer cylinder. The inner cylinder and the outer cylinder are kept in communication so that the material in the inner cylinder can overflow into the outer cylinder. The method includes: introducing a molybdenum-containing material and an organic ligand material into reaction unit 1 for a first reaction to obtain gas phase I and liquid phase I; introducing the organic ligand material and the liquid phase I into the second reaction unit for a second reaction to obtain gas phase II and the homogeneous organic molybdenum-containing compound. The method provided by this invention features high reaction mass transfer efficiency and high conversion rate.

A method of hydrogen (H2) storage and withdrawal is described. The method includes injecting a fluid stream into a subsurface formation via an injection well to form a composition containing a gas-phase mixture, a first liquid-phase mixture, and a solid matrix, injecting a H2-containing gas stream into the subsurface formation via the injection well to form a first gas mixture containing H2 gas, heating and pressurizing the subsurface formation containing the first gas mixture via at least one heat well to achieve a storage condition and maintaining the storage condition to store the H2 in the subsurface formation, injecting a CH4-containing gas stream into the subsurface formation via the at least one injection well to form a second gas mixture, withdrawing the second gas mixture via at least one production well, and introducing the second gas mixture into a hydrogen purification device including hydrogen-selective membranes.

The application discloses an experimental device and experimental method for submarine pipeline stress corrosion in a gaseous hydrogen environment, which comprises a high-pressure kettle body arranged on a support, a flange kettle cover arranged on the high-pressure kettle body, NaCl solution arranged in the high-pressure kettle body, a rod-shaped sample arranged in the NaCl solution, a tension sensor arranged on a rack, an upper stretching rod connected with the tension sensor, a servo motor arranged on the rack, an electric cylinder connected with the servo motor, and a lower stretching rod connected with a piston rod of the electric cylinder. The application has the characteristics that hydrogen-induced material damage and seawater corrosion damage are connected together, and reliable data basis is provided for the selection of materials for manufacturing submarine hydrogen pipelines.

This invention provides a gas-phase molecular absorption spectrometry-naphthylethylenediamine hydrochloride spectrophotometric method for determining total nitrogen in waste gas from stationary pollution sources. The method comprises the following steps: S1. Reacting the waste gas with an oxidant; S2. Using an absorbent, further reacting the waste gas after S1; S3. Collecting the oxidant after S1, pretreating it to reduce nitrogen-containing compounds to nitric oxide, and detecting the total nitrogen content I; S4. Collecting the absorbent after S2 to obtain the total nitrogen content II; S5. Summing the total nitrogen content I and total nitrogen content II to obtain the total nitrogen content in the current waste gas. This method enables accurate determination of total nitrogen in waste gas from stationary pollution sources.

The invention discloses a novel slurry bed reactor and a reaction method. The novel slurry bed reactor comprises a reactor shell, a spiral filler, a fluid distribution device and a reactor base. The core of the invention lies in that the spiral filler can promote liquid to be condensed to form a liquid bridge, and the liquid bridge flows downwards along a spiral track, so that a unique semi-constrained liquid flowing mode is constructed. In the mode, gas-phase molecules firstly realize efficient mass transfer at the spiral liquid film and then diffuse to the surface of the catalyst for reaction. The design effectively solves the problems of low mass transfer efficiency, high pressure drop, non-uniform fluid distribution, serious flow back mixing and the like of the traditional slurry bed, and obviously improves the reaction performance. The reactor integrates a distribution and temperature control system, and is suitable for various catalytic reactions and gas-liquid mass transfer strengthening processes.

A recovery device 1 comprises: a first tank 11 connected to a first conduit VL6 to which ammonia gas F1 is supplied, the first tank 11 storing ammonia in two phases including a gas phase and a liquid phase; and a second conduit 12 that passes through the interior of the first tank 11 and accommodates the cooling fluid, the cooling fluid having a temperature lower than the temperature of the ammonia gas supplied from the first conduit VL6.

The application provides a reduction tail gas filtering system and a dust collecting device, and relates to the technical field of chemical production. The reduction tail gas filtering system comprises a sealing part, a first through hole is arranged at the top of the outer side of the sealing part, the sealing part is connected with a dust separation device through a first pipeline, the dust separation device is connected with a filtering device through a second pipeline, and the positions of the dust separation device and the filtering device are higher than the position of the sealing part; a dust bag is arranged in the sealing part, the dust bag comprises gas phase hot silane and silicon powder, the silicon powder comprises first type silicon powder, second type silicon powder and third type silicon powder; the dust separation device is used for separating the gas phase hot silane and the third type silicon powder in the first mixture from the first mixture and conveying them to the filtering device; and the filtering device is used for separating the gas phase hot silane and the third type silicon powder. The application can provide a closed reduction tail gas filtering system for the secondary collection stage of silicon powder and prevent coarse particle dust from accumulating.

The invention relates to an immersion cooling unit (1) comprising an immersion cell defining an internal cavity (3), a bath (5) comprising a dielectric working fluid partially filling the internal cavity and a gaseous phase so as to form a two-phase system; the unit (1) further comprising a condensation device which is positioned in the internal cavity above the electronic component such as not to be immersed in the dielectric working fluid and at least one electronic component (7) which is totally or at least partially immersed in said bath (5); the unit (1) is notable in that the dielectric working fluid comprises perfluoro-4-methyl-2-pentene and in that the gaseous phase comprises a moisture content of at least 20%. Figure for the abstract: Figure 1

The invention belongs to the technical field of infrared focal plane sensor manufacturing, and particularly relates to a vanadium oxide etching post-processing method based on VHF wetting driving. Comprising the following steps: performing graded vacuumizing and temperature programming pretreatment on a wafer subjected to vanadium oxide etching, and continuously introducing VHF moistening mixed gas consisting of anhydrous hydrogen fluoride, ethanol steam and inert carrier gas into a treatment cavity; by accurately regulating and controlling the temperature and pressure of the cavity, anhydrous hydrogen fluoride is promoted to be subjected to a selective fluorination reaction with photoresist decomposition products and metal impurities left after etching to generate gaseous products, and ethanol steam synchronously exerts the dual effects of moistening, corrosion prevention and water molecule desorption promotion. According to the method, a gas phase processing mode is adopted in the whole process, liquid intervention is avoided, the problems of vanadium oxide pixel adhesion and film corrosion can be effectively solved, meanwhile, residual impurities are thoroughly removed, the electrical property stability of the vanadium oxide film is guaranteed, the yield and detection precision of the infrared focal plane sensor are remarkably improved, and the method has good industrial application prospects.

The invention relates to a method and a system for improving SiC bulk doping yield based on retention boundary layer design, and relates to the technical field of semiconductor material preparation, chemical vapor deposition treatment is carried out on gas-phase raw materials on the surface of a substrate, and the gas-phase raw materials are gaseous methyl trichlorosilane, hydrogen, nitrogen and helium; the method comprises the following steps: collecting the flow rate and chemical vapor deposition processing parameters of a gas-phase raw material in real time, controlling the volume flow ratio of hydrogen to gaseous methyl trichlorosilane to be 3-15, and calculating the thickness of a retention boundary layer of the gas-phase raw material according to the flow rate and chemical vapor deposition processing parameters of the gas-phase raw material, the thickness of the retention boundary layer of the gas-phase raw material is compared with the preset thickness of the retention boundary layer, the flow velocity of the gas-phase raw material and / or chemical vapor deposition processing parameters are / is adjusted according to the comparison result, and the SiC block material prepared through the method is compact and free of pores or free carbon or silicon carbide nanowires, and the adjustable range of the resistivity is wide.

The application discloses a LNG storage tank radar liquid level temperature compensation method and system based on gas phase temperature distribution, a medium and a program product, and relates to the technical field of liquid level measurement. In view of the problem that the measurement error is caused by regarding the electromagnetic wave propagation speed as a constant in the existing radar liquid level measurement, a gas phase temperature distribution model along the height direction is established, the electromagnetic wave propagation speed in the gas phase is dynamically corrected by combining the gas state equation and the electromagnetic wave propagation theory, and the propagation time is calculated by path integration, so that the inversion calculation of the liquid level height is realized. The application utilizes the liquid phase temperature stability and the gas phase top temperature measurement value to construct a gas phase temperature distribution function, further calculates the gas density, the dielectric constant and the propagation speed, and realizes the compensation of the liquid level measurement result. Simulation and actual rapid liquid discharge working condition verification show that the method can effectively reduce the liquid level measurement error, improve the measurement accuracy and reliability, and is suitable for the liquid level measurement scene of low-temperature storage tanks such as liquefied natural gas.