787 results about "Gas release" patented technology

The invention discloses a standard volume-based mass spectrum signal calibration system and method, and belongs to the field of measurement, the standard volume-based mass spectrum signal calibration system comprises a standard flow generation system and a mass spectrum detection system.The standard flow generation system comprises a standard tank, a first valve, a fifth valve and a micro-leakage valve which are sequentially connected through a gas pipeline; a gas inlet pipeline, a film gauge and a first molecular pump set are connected to a gas pipeline connecting the first valve and the fifth valve in parallel, a second valve is installed on the gas inlet pipeline, and a fourth valve is installed at an inlet of the first molecular pump set. The mass spectrometry detection system comprises a vacuum chamber communicated with the micro-leakage valve through a gas pipeline, a mass spectrometer, a second molecular pump set and a full-scale gauge are connected to the vacuum chamber, and a gate valve is installed at an inlet of the second molecular pump set. The gas release rate can be calculated and continuously adjusted on the premise that a leak hole is not needed, and the problems that in the prior art, a standard leak hole is limited in application range, low-flux measurement is inaccurate, the nominal leak rate is prone to drifting, and cost is high are solved.

The invention relates to a coal field fire high-temperature area identification and judgment method. The coal field fire high-temperature area identification and judgment method comprises the following steps: S10, delimiting a target area of a coal field, and respectively acquiring various data in the target area; s20, establishing a time rule model of temperature change through thermal-time sequence coupling; s30, establishing an incidence relation between temperature and radiation characteristics through thermal-spectral coupling; s40, establishing a chemical reaction association relationship between temperature and gas release through heat-gas coupling; and S50, constructing a three-dimensional feature space through the integration of S20, S30 and S40, classifying the three-dimensional feature space through machine learning, and outputting the probability corresponding to the high-temperature type. The coal field fire high-temperature area identification and judgment method has the advantages that high-precision and strong-anti-interference high-temperature area identification is achieved, and reliable technical support is provided for coal field fire monitoring.

The invention relates to the technical field of material testing, and particularly discloses an intelligent quality detection method and system for a micro-mineral bio-organic fertilizer, local thermal excitation is applied to a fertilizer sample through a micro-area thermal pulse excitation device, a gas release kinetic curve and a spectrum change track are synchronously collected, and a gas spectrum coupling data cube is constructed; performing differential transformation and modal decomposition on the time sequence feature set, extracting transient response feature vectors and generating an activity response distribution diagram; establishing component-activity correlation analysis, and decoupling biological metabolic activity and matrix background interference through feature separation and a comparative learning strategy to obtain a dynamic metabolic fingerprint; constructing a multi-dimensional feature space by using the dynamic metabolic fingerprints and the apparent characteristic parameters, and performing information aggregation and feature reconstruction by using a graph convolutional network to generate a comprehensive quality index; and finally, realizing quality grade judgment based on a quality characteristic pyramid structure, and establishing a dynamic early warning mechanism by analyzing time sequence evolution characteristics of the activity response distribution diagram.

The utility model relates to the field of gas-liquid mixing, and provides a bubble generator and an ozone aerator, the bubble generator comprises an inlet connecting end, an outlet connecting end and a throttler assembly, an inlet of the throttler assembly is detachably connected with the inlet connecting end, an outlet of the throttler assembly is detachably connected with the outlet connecting end, and the inlet connecting end is connected with the outlet connecting end. The throttler assembly comprises at least two sets of throttling holes and mixing chambers, and the throttling holes and the mixing chambers are alternately arranged in the direction from the inlet connecting end to the outlet connecting end. And the inner diameter of the throttling hole is continuously reduced. The utility model relates to a flow restrictor assembly, which is used for solving the defect of low inflation efficiency in the prior art, a gas-liquid mixed flow enters the flow restrictor assembly with a plurality of groups of throttling holes and a mixing chamber through an inlet connecting end, and the inner diameters of the plurality of groups of throttling holes are sequentially reduced to carry out multiple times of pressurization, gas dissolving, pressure reduction and gas release to obtain bubbles with smaller diameters, such as nano-scale bubbles. By arranging different groups of throttling holes and mixing chambers, the diameter of generated bubbles is adjusted, the adding efficiency of ozone and other gases is improved, and energy consumption is reduced.

A control method for a flame retardant system of an energy storage battery pack, comprising: for each battery module, when a fire occurs in the battery module, on the basis of sensor data provided by a sensor module corresponding to the battery module, determining the fire development stage of the battery module and, on the basis of the fire development stage, controlling the initial degree of opening of a gas release module corresponding to the battery module, so as to activate flame retardation; during the flame retardation, on the basis of the sensor data provided by the sensor module, updating the fire development stage of the battery module and, on the basis of the sensor data provided by the sensor module and the degree of opening of the gas release module, calculating a pressure relief rate of the battery module; and, if the current pressure relief rate falls outside of a target rate range corresponding to the current fire development stage, on the basis of the current sensor data, adjusting the degree of opening of the gas release module.

The invention provides a method for suppressing internal misfire caused by turn-to-turn short circuit of a dry-type air-core reactor, and belongs to the technical field of dry-type air-core reactors. A turn-to-turn short circuit fault detection device combining differential protection and infrared thermal image detection is established to form a three-dimensional turn-to-turn short circuit feature vector, a four-dimensional internal misfire minimum ignition vector is obtained, and a fire development prediction model is established based on an Arrhenius equation. A double-layer game model for minimizing the upper-layer fire loss and minimizing the lower-layer fire extinguishing cost is constructed to optimize five-dimensional suppression vector parameters, and coordinated actions of suppression equipment such as power-off protection, forced ventilation, temperature suppression and inert gas release are controlled in real time through a suppression vector parameter adjustment function. The technical problem of fire suppression measure starting lag or excessive response caused by difficulty in accurately predicting the opportunity and degree of development of the turn-to-turn short circuit fault of the dry-type air-core reactor into the internal fire disaster is solved.

The invention relates to the technical field of agricultural microbial monitoring, in particular to a microbial action monitoring and analysis system which comprises a pollution detection module, a distribution recognition module, a state analysis module, a period extraction module and a node traceability module. According to the method, a pollution identification basis is constructed based on a multi-channel conductance deviation trend and a synchronization feature, flora distribution information is established by introducing a feature grouping mode of image texture, gray level and structural density, and consistency judgment is performed by combining direction deviation of three types of response data of conductance, gas release concentration and pH; the continuity and the staged response precision of microbial function state recognition are enhanced, and meanwhile, a linked list structure index path is constructed according to sampling time, position and channel sequence, so that a continuous mapping process can be formed by a front-back sequence and behavior transition relation of a state period; the structure expression capability and the rhythm construction efficiency of the multivariable monitoring data in the microbial action stage analysis are improved.

To provide an electrochemical hydrogen booster system in which a regenerated hydrogen gas can be utilized without being discharged to the outside as waste and the decline of a hydrogen production efficiency of the electrochemical hydrogen booster system can be suppressed.SOLUTION: An electrochemical hydrogen booster system 10 comprises: a hydrogen booster stack 16 for releasing a hydrogen gas supplied to an anode electrode as a highly pressured hydrogen gas boosted from a cathode electrode through a polymer electrolyte; a hydrogen supply apparatus 14 for supplying the hydrogen gas to the anode electrode of the hydrogen booster stack 16 through a hydrogen supply flow path 60; a PSA apparatus 22 including multiple adsorption towers 24 for dehumidifying the highly pressurized hydrogen gas released from the hydrogen booster stack 16; and a return flow path 94 for recycling a regenerated hydrogen gas utilized for the regeneration in the adsorption tower 24 into the hydrogen supply flow path 60 or the hydrogen supply apparatus 14.SELECTED DRAWING: Figure 1

The invention relates to the technical field of underground energy storage, in particular to a gas storage cavern grouting confining pressure real-time monitoring system and method based on the piezoresistive effect, and the system comprises a grouting reinforcement module which is used for injecting grout into a target gas storage cavern and laying a lining to form a grouting reinforcement area; the resistance detection module is used for detecting resistivity distribution characteristics of the grouting reinforcement area in real time; the confining pressure monitoring module is used for analyzing the resistivity distribution characteristics based on a preset piezoresistive modified slurry resistivity-surrounding rock stress relation model to obtain the actual stress state of surrounding rock; and the early warning regulation and control module is used for triggering an early warning signal based on the actual stress state of the surrounding rock and releasing gas. According to the invention, continuous and non-contact measurement of the surrounding rock stress state of the gas storage cavern can be realized.

The invention discloses an intelligent cold-chain logistics monitoring method and system, and relates to the technical field of cold-chain logistics monitoring, the system comprises a data acquisition module, a data processing module, a monitoring evaluation module and a management analysis module, and the monitoring evaluation module comprises an external influence sub-module, a comprehensive influence sub-module and a cargo comprehensive risk analysis sub-module. Temperature and humidity, vibration strength and loading and unloading times are included in environmental influence indexes output by the external influence sub-module, potential influence of a transportation environment on cargo quality can be evaluated in real time, and on the basis of the environmental influence indexes, comprehensive effects of cargo release gas concentration, pressure values and the like in various cold chain transportation processes are combined, so that the cargo quality can be evaluated in real time. According to the method, the gas pressure influence factors are output through the environmental influence indexes, sensitive goods are accurately monitored, the gas pressure influence factors and the environmental influence indexes are combined, the goods comprehensive risk coefficient is output in combination with factors such as moisture loss, comprehensive risk indexes are provided for enterprises, and a cold-chain logistics risk assessment system is perfected.

The invention belongs to the technical field of compressed air control, and particularly relates to a compressed air energy storage power station multistage protection and controlled discharge control method and system. Comprising the steps that a compressed air energy storage power station system comprising a discharge bypass and a discharge valve and a safety valve which are arranged on the downstream of the discharge bypass is built; when pressure abnormity occurs, first-stage response is started, operation parameters of the compressed air energy storage power station system are adjusted, or a discharge bypass is started in an overlapped mode, and the pressure abnormity trend is restrained; when the first-stage response cannot restrain pressure abnormity, the second-stage response is started, the opening degree of the release valve is adjusted, and gas release is conducted; and when the second-level response cannot restrain pressure abnormity, third-level response is started, a stepped release sequence is adopted, the opening degree of a release valve is increased, meanwhile, the opening degree of a safety valve is gradually increased to conduct gas release, and finally final release is conducted by triggering a rupture disk. According to the invention, through a stepped control strategy, the defects that a single protection device is single in protection means and easy to over-excite protection are avoided.

The invention belongs to the field of buccal nicotine bags, and particularly relates to a buccal nicotine bag capable of releasing gas and a preparation method of the buccal nicotine bag. The buccal nicotine bag capable of releasing the gas comprises a bag body, nicotine powder and a gas releasing body, the nicotine powder and the gas releasing body are arranged in the bag body; the nicotine powder is in a pharmaceutically acceptable form suitable for oral delivery; the gas releaser releases gas when the buccal nicotine pouch is placed in the oral cavity. The gas release body releases gas in the oral cavity to give people a feeling similar to a jumping feeling, so that a sound similar to a crisp feeling is generated, and wonderful experience of taste and hearing is brought to consumers.

The utility model relates to the technical field of electrically-driven pumps, in particular to a valve and a gas control device, which comprise a bottom plate with a bottom plate hole part, a cover plate with a gas outlet hole part, a valve plate with a valve plate hole part and a support plate with a gas release channel, the bottom plate, the support plate and the cover plate are sequentially stacked, a cavity is arranged in the center of the support plate, and the gas release channel is arranged in the cavity. A valve chamber is formed, the valve plate is arranged in the valve chamber, the air release channel is formed in the periphery of the supporting plate and communicated with the valve chamber, the bottom plate hole part, the cover plate air outlet hole part and the valve plate hole part are oppositely arranged, the bottom plate hole part is annular, and a valve plate hole part blocking plate opposite to the valve plate hole part is formed in the middle area of the bottom plate hole part. According to the valve and the gas control device, gas leakage is conducted through the lateral gap, the gas leakage area is greatly increased, the gas leakage speed is increased, the valve and the gas control device are more suitable for wrist type and arm type sphygmomanometers and massage instrument products so as to meet better user experience, meanwhile, the failure risk caused by blockage due to entering of impurities can be reduced, and therefore the reliability of the products is improved.

The invention discloses a power-on self-test method and system for a closed air suspension system, and the method comprises the steps: starting self-test after receiving a vehicle power-on signal, opening an air path switching valve RV2 and an air escape valve VV, enabling a pressure sensor pipeline to be communicated with the atmosphere, and generating an initial air path detection result; based on the initial gas path detection result, closing a gas release valve VV and opening a gas path switching valve RV1 to enable a pressure sensor pipeline to be communicated with the gas storage tank, and generating a gas path detection result of the gas storage tank; on the basis of the air storage tank air path detection result, an air path switching valve RV1 is closed, all air spring distribution valves ASV1 to ASV2 are sequentially opened, and an air spring detection result is generated; and on the basis of the air spring detection result, all the distribution valves are closed, the air path switching valve RV2 is opened, the air pump is started, a pressure value is read after waiting for a preset time T4, when the pressure value is larger than a threshold P7, it is judged that the air pump is normal, and a system self-inspection result is generated. According to the embodiment of the invention, comprehensive self-inspection of the system can be quickly completed when the vehicle is powered on, and the reliability of the vehicle is improved.

The application discloses a heat pipe heat sink welding process based on heat conduction and belongs to the technical field of welding. The welding equipment is composed of a vacuum box, a control box, an electromagnetic device, a heating plate, a control box, a vacuum straight-through pipe with a water cooling jacket, a water pipe, a vacuum variable-diameter cross pipe, a gas release valve, a vacuum valve, a condenser, a vacuum bellows, a vacuum pump, a baffle valve, a gas collecting pipe, a smoke hood, a liquid cooling source and a smoke purifier. The application has the advantages that the problems of product performance decline and even scrapping caused by the floating of the heat pipe in the traditional welding process are perfectly solved, the welding quality is improved, the vacuum pump is protected and the service life of the vacuum pump is prolonged, the process is simple and easy to implement, and the production cost can be greatly reduced.

The invention relates to an accident and fire precursor detection system, in particular to a system for automatically detecting overheating of an electrical equipment component, a method of using the same and a testing method. An electrical equipment element overheating automatic detection system comprises a gas sensor used for detecting gas released when a controlled element or a thermal activation gas emission material installed on the controlled element is heated; a controller associated with or combined with the gas sensor has a function of generating an overheat alarm and / or transmitting overheat information to other devices when the controlled element is heated, which function can be achieved when the sensor is affected by gas released when the controlled element is heated or a thermally activated gas release material mounted thereon, and meanwhile, the existence of background gas in the controlled area is considered. Meanwhile, the invention discloses a testing method of the system and a method for automatically detecting overheating of an electrical equipment element. According to the invention, by timely detecting the defect that the electrical equipment is overheated, the operation reliability and safety of the electrical equipment are improved.

The invention discloses a test device and method for simulating an ultra-high-speed penetration ground impact effect, and the device employs a static load loading system to apply a static load to the periphery of a sample so as to simulate a ground stress environment, and employs a dynamic load loading system to apply an impact dynamic load to the top of the sample so as to simulate ground impact. In the dynamic loading system, a phase change reaction kettle is used for heating liquid CO2 to a supercritical high-pressure state; the liquid filling module is used for filling liquid CO2 into the phase change reaction kettle; the gun barrel is used for receiving high-pressure gas released by the phase change reaction kettle and forming ground shock waves similar to a plane; the stress wave lens module is used for adjusting the width of shock waves through a stress wave lens combination and acting the shock waves on the sample; the control module can control the shock wave peak pressure by regulating the heating power of the phase change reaction kettle, and can control the duration time of shock waves by regulating the bore diameter of the gun barrel. According to the invention, controllable and high-fidelity simulation of the ultra-high-speed penetration impact effect is realized.

The invention provides a high-temperature-resistant and high-humidity-resistant double-sided tape for bonding a PC (Polycarbonate) base material. The high-temperature-resistant and high-humidity-resistant double-sided tape has a four-layer structure, namely a first adhesive layer, a reinforced body layer, a second adhesive layer and a release protective layer in sequence. The two adhesive layers are acrylate pressure-sensitive adhesives and comprise an acrylate polymer solution, tackifying resin, a zeolite molecular sieve and a cross-linking agent. The key of the pressure-sensitive adhesive is an acrylate polymer solution formula, the rigidity of a molecular chain is enhanced by introducing methyl methacrylate and isobornyl methacrylate, and the high-temperature adhesive strength is ensured; meanwhile, the acid values of the hydroxyl / carboxyl-containing monomer and the tackifying resin are controlled to reduce hydrophilic groups and improve moisture resistance, and the zeolite molecular sieve is used for adsorbing gas released by the PC base material under high temperature and high humidity to prevent the gas from damaging a bonding interface. According to the scheme, the process is simple, the cost is controllable, and the problem that the bonding force of the PC base material is reduced due to gas release in a high-temperature and high-humidity environment is effectively solved.

The utility model discloses a highway bridge pavement water seepage detection device which comprises a water supply mechanism, the top of the water supply mechanism is fixedly provided with a water containing cylinder used for detecting water bearing, the water supply mechanism is fixedly provided with a balancing weight, and the top of the water supply mechanism is provided with an air escape valve in a penetrating mode. A jacking mechanism making contact with the top of detection water is slidably connected into the water containing barrel, and an identification mechanism facilitating observation of the water falling speed is arranged at the top of the water supply mechanism. The water supply mechanism is placed on the asphalt pavement needing to be detected, then the water supply mechanism is turned on to supply water, gas at the bottom of the water supply mechanism can be discharged through the gas release valve at the moment, then the water containing barrel is filled with the gas, and then the jacking mechanism falls down after water falls down. In this way, a user can observe the water falling position on the identification mechanism with the higher height according to the jacking mechanism, the detection device can detect the water seepage condition more conveniently, and detection is more accurate.

The invention provides a deep-sea in-situ multispectral detection system. The deep-sea in-situ multispectral detection system comprises a pressure-resistant cabin, a spectrum acquisition and analysis module, a laser emission and excitation module, a laser path switching and signal regulation and control module, a system control and power supply management module and a data communication and platform interface module, the pressure-resistant cabin body is composed of a main cabin body cylinder section, a front cabin cover, a rear cabin cover and annular reinforcing ribs evenly distributed outside the main cabin body cylinder section. The front cabin cover is provided with a main power supply control base, an external power supply control sealing base, a laser-induced breakdown spectroscopy detection window, a pressure-resistant optical cable cabin penetrating piece and a deflation valve; and various functional modules are arranged on a partition plate in the cabin body. According to the system, an in-situ multispectral detection system which has multispectral joint recognition capability, adapts to deep sea extreme environments and can carry various types of operation platforms is constructed, so that efficient, stable and full-chain in-situ recognition of complex objects such as deep sea fluid, sediment pore water and hydrates is realized, and the detection efficiency and the operation safety are improved.

The invention provides a method and device for monitoring gas release of a battery pack, and the method comprises the following steps: a to-be-detected battery pack is placed in a high-pressure or low-pressure airtight cabin, and the pressure intensity of the high-pressure or low-pressure airtight cabin is the external pressure intensity of the battery pack in actual use. A piezoelectric excitation piece is attached to the high-pressure or low-pressure airtight cabin, the airtight cabin is subjected to frequency sweeping excitation to obtain the initial frequency f0 of the standing high-pressure or low-pressure airtight cabin, and the initial quality factor Q (0) is calculated. And continuously starting the piezoelectric excitation sheet by taking each second as a period to obtain a real-time frequency f (t) of the airtight cabin, and calculating a real-time quality factor Q (t) of the airtight cabin based on the initial frequency f0 and the real-time frequency f (t). And obtaining a threshold value A of a quality factor between electrolyte decomposition and diaphragm decomposition of the battery pack according to the capacity and the type of the battery pack and the volume of the airtight cabin. And comparing the real-time quality factor Q (t) with a threshold value A, and if Q (t) is less than A, stopping the pressurization or negative pressure device. Through the method, the explosion risk caused by continuous leakage of the battery pack is prevented.

The invention discloses a preparation method and application of a high-density iron-nitrogen-carbon monatomic catalyst. The method specifically comprises the following steps: S1, uniformly mixing nitrogen-doped carbon and ferrous oxalate; s2, in an inert atmosphere, carrying out a first pyrolytic reaction at 340-360 DEG C to obtain an intermediate, and meanwhile, carrying out etching on the carbon carrier by using CO2 gas generated by the reaction, so that a plurality of microporous structures are formed on the carbon carrier; s3, the intermediate continues to be subjected to a second pyrolytic reaction in the inert atmosphere at the temperature of 850-950 DEG C, the FeOx nano-particles are converted into Fe-N4 active sites, and a pyrolytic product is obtained; and S4, naturally cooling to room temperature to obtain the high-density iron-nitrogen-carbon monatomic catalyst. Superfine ferric oxide (FeOx) nano-particles are generated through a precursor to serve as intermediates, carbon defects are created through CO2 gas released in the decomposition process of the FeOx nano-particles, and therefore the oxygen reduction reaction performance of the catalyst is remarkably improved, and the catalyst is applied to fuel cells.

The invention discloses a coal seam basic parameter self-adaptive online measurement method, and relates to the technical field of coal seam parameter acquisition, the method comprises the following steps: S1, deploying a multi-parameter sensor array in a coal seam drill hole, and acquiring original gas pressure, temperature, humidity, coal strain and acoustic emission signals in real time; s2, calculating and correcting gas pressure through a composite environment compensation model; s3, constructing an unsteady state diffusion-seepage equation to invert the gas concentration and the pressure field; s4, performing time-frequency analysis on the acoustic emission signal, and calculating the amount of gas released by micro-fracture; s5, the dynamic gas content is calculated based on the micro-fracture gas release amount; and step S6, constructing an objective function and carrying out parameter dynamic optimization in real time. According to the method, the coal seam parameters are collected and accurately corrected, the problems in coal seam mining work can be solved in an assisted mode, and the production progress of the working face is accelerated.

The invention discloses a closed gas controlled release test platform for testing infrared imaging equipment. The closed gas controlled release test platform comprises a gas source, a gas release box, a control system and an auxiliary system, the gas source is connected with the gas release box through a pipeline; the control system is respectively connected with the gas source, the gas release box and the auxiliary system; the auxiliary system is respectively connected with the gas source and the gas release box through pipelines; the gas release box comprises a gas chamber and a black body source; the air chamber and the black body source are arranged adjacently; the air chamber is in a cuboid shape. The invention provides a large-size closed gas controlled release test platform, which can be used for simulating hazardous gas leakage diffusion distribution in a real environment in a laboratory environment, obtaining the gas column concentration with the highest optical path of 1000mm, and flexibly adjusting the gas source type according to detection requirements. Concentration inversion algorithm development and concentration calibration of the infrared imaging equipment can be realized.

The invention discloses a combined air inlet two-stage combustion six-stroke engine, and relates to the field of power energy. In order to overcome the defects that in the prior art, a six-stroke engine is insufficient in gas inlet in the secondary combustion stage, poor in oil-gas mixing quality and low in combustion efficiency, according to the technical scheme, the six-stroke engine comprises a combustion chamber assembly, a fuel injector, a transmission mechanism and a gas distribution mechanism; the gas distribution mechanism comprises a gas inlet pipeline, an exhaust pipeline, a gas storage cavity, a gas inlet pipeline valve, a scavenging duct and a scavenging duct one-way valve, the working cycle of the engine comprises two times of gas inlet and two times of oil injection combustion acting, and the gas storage cavity releases gas to supplement fresh air in the combustion chamber in the second time of gas inlet. The combustion chamber assembly comprises a cylinder, a piston and a cylinder cover, the piston reciprocates in the cylinder, and the cylinder and the cylinder cover are closed to form a combustion chamber. The invention is suitable for improving the heat efficiency and output performance of the engine, especially for an internal combustion engine power system requiring multiple combustion work.

The invention is suitable for the technical field of unmanned aerial vehicle energy consumption management and intelligent control, and provides an unmanned aerial vehicle logistics transportation intelligent management platform fusing multi-source data, and the platform comprises a flux regulation and control module which is used for predicting the gas release flux in an unmanned aerial vehicle cabin in unit time, and dynamically adjusting the ventilation flow rate of a ventilation system according to the gas release flux, the gas concentration in the cabin is maintained to be in a gas concentration steady-state interval corresponding to the heat balance optimal time period of the gas in the cabin. According to the technical scheme, the influence rule of the volatile pollutant micro-thermal effect on the energy efficiency of the unmanned aerial vehicle battery is disclosed, and the unmanned aerial vehicle battery continuously operates in the optimal energy efficiency state corresponding to the discharge efficiency peak value interval through real-time trend correction; therefore, the energy utilization rate and the flight stability of the unmanned aerial vehicle under the task of carrying the recycled objects are remarkably improved.

According to the quantitative evaluation method for the dynamic output of the adsorbed gas and the free gas of the deep coal bed gas, the gas released by the coal bed rock core sample in the experiment process and the corresponding rock core experiment data are firstly obtained, and a basic data source fitting the actual reservoir characteristics of the deep coal bed is provided for subsequent evaluation. Then isotope value testing is conducted on the gas, a first methane carbon isotope value is obtained, and the fractionation characteristics of the methane gas in matrix holes and cracks are accurately reflected. First gas pressure and first core temperature of the coal bed gas in the matrix hole are calculated, second gas pressure and second core temperature of the coal bed gas in the fracture are obtained through calculation, and accurate characterization of the temperature and pressure field in the reservoir is achieved. Finally, the gas quantity of the adsorbed gas and the free gas of the coal bed gas is obtained through calculation by means of the gas state equation and the isothermal adsorption equation, and the accuracy of quantitative evaluation of the output of the adsorbed gas and the free gas of the coal bed gas is greatly improved through multi-source fitting of simulation experiment data and preset control equation calculation data.

The invention relates to the technical field of coal mine safety mining and rock stratum control, and discloses a deep roadway surrounding rock multi-parameter dynamic regulation and control method which comprises the following steps: firstly, dividing a monitoring area and collecting gas pressure, surrounding rock displacement, gas release amount and stress data in real time; then calculating a gas pressure influence index and a surrounding rock stress response coefficient representing multi-field coupling characteristics based on the collected data; inputting the characteristic indexes into a pre-trained multiple regression model, and calculating to generate a surrounding rock stability evaluation coefficient of each region; and finally, dynamically dividing the monitoring area into a stable area, an early warning area or an unstable area according to a comparison result of the evaluation coefficient and a set threshold interval, and respectively executing differentiated support regulation and control measures such as current situation maintenance, support strength increase or grouting reinforcement. According to the method, dynamic accurate evaluation and active fine management of the stability of the surrounding rock of the deep roadway are realized by quantifying the coupling effect of a gas field, a stress field and a displacement field.

A lid unit for use with a beverage container. The lid unit includes a lid body having a lid cover and a side wall extending downwardly from the lid cover; and a drink straw having a gas relief valve detachably fitted to the lid body. In particular, a rotatable top plate can be placed on the lid cover; and the gas relief valve can permit the pressured gas to escape the lid unit. The gas relief valve can include a valve body, flexible strip and spool. Also, the lid cover has an annular raised rim, and defines two drink orifices. The first drink orifice is shaped and sized to be an elongated slot, and the second drink orifice is shaped and sized to be a circular hole for insertion of the drink straw. The two drink orifices are spaced apart circumferentially and in fluid communication with the beverage container.

The invention discloses a test method for a high-load heating tube for a mold, and belongs to the technical field of single-head electric heating tube detection. The method specifically comprises the following steps: S1, historical data acquisition: acquiring cold-state electrical performance data of single-head electric heating tubes with different specifications and under different working conditions; s2, historical data preprocessing: performing preprocessing including data cleaning, data normalization and data standardization on historical data to obtain a standardized data set; the test process design covers a full-period closed loop of cold state detection, hot state leakage current test, reliability test, secondary hot state leakage current test and secondary cold state detection, the electrical safety (leakage current control) under a high-load working condition is verified through the hot state test, and the reliability of an actual use scene is simulated through a rapid on-off test. Meanwhile, the appearance, temperature, gas release and other states of the heating pipe are monitored in real time, abnormal testing is terminated in time, safety risks are avoided, and it is ensured that the detection result can comprehensively reflect the actual use performance of the heating pipe.