688 results about "Gas consumption" patented technology

The invention discloses an air compressor frequency conversion and energy saving control method and system based on data analysis, and particularly relates to the technical field of air compressor control. Aiming at the problems of frequency jitter and motor instability of the permanent magnet variable-frequency screw air compressor in a high-frequency air consumption fluctuation scene, the method comprises the following steps of: acquiring exhaust pressure, air consumption flow, motor current, frequency converter output frequency and environment temperature data in real time, performing trend prediction by utilizing a data analysis model, and constructing a multi-dimensional working condition characteristic curve; a gas consumption fluctuation mode is accurately recognized, and predictive judgment is made before frequency fluctuation is about to exceed the limit; according to a prediction result, a frequency converter control strategy is dynamically adjusted, the frequency response rate is buffered in advance, an energy-saving mode is automatically triggered when the load change trend is abnormal, rotating speed control is optimized in real time, and according to the method, the operation stability and response precision of the air compressor are effectively improved, energy consumption is remarkably reduced, and the service life of equipment is prolonged; the method is suitable for the intelligent energy-saving operation requirement in a high-beat and high-precision manufacturing scene.

The invention provides a self-adaptive teaching-free welding robot intelligent gas saving monitoring system, which relates to the technical field of industrial robots, and comprises a three-dimensional sensing module used for identifying the workpiece material category through a multispectral sensor integrated with a welding gun of a welding robot, meanwhile, a stereoscopic vision camera and a line structure light scanning camera are used for obtaining three-dimensional point cloud data of the welding seam in real time; the parameter adjusting module is used for calling a heat conductivity coefficient database based on the three-dimensional point cloud data, and correcting the initial flow of the welding current, the arc voltage and the protective gas in real time; and the matching control module is used for calculating the arc length variable quantity based on the arc voltage, controlling the opening degree of the gas flow valve through a dynamic regulator, realizing dynamic matching of the gas flow and the changed arc length, and generating gas dynamic matching control parameters. Through cooperative operation of self-adaptive attitude compensation and real-time gas consumption monitoring, teaching-free accurate operation in the welding process is achieved, and intelligent control over gas consumption is improved.

The invention relates to an air compressor energy-saving control method, device and equipment based on an AI algorithm, and the method comprises the steps: collecting the operation data of an air compressor in real time; the real-time energy efficiency ratio of each air compressor is dynamically calculated according to the energy consumption and the gas production rate, and the air compressors with the energy efficiency ratios lower than 75% are marked as low-efficiency equipment; on the basis of the historical gas consumption data, the production line schedule, the environmental parameters and the equipment state, the gas consumption demand in the future time period and the future efficiency of the air compressor are predicted through the air pressure demand prediction model and the EER prediction model; on the premise of meeting the gas demand in the future period, with the goal of minimizing the total energy consumption and the constraint conditions that the total gas production rate meets the predicted gas demand and the load rate of the frequency converter is limited to be 50%-100%, an optimal switch combination and load distribution scheme is obtained, and a corresponding control instruction is generated and executed, so that the production demand is accurately matched, and meanwhile, the production efficiency is improved. The energy consumption of the system is reduced, the equipment management efficiency is improved, and the purpose of refined and intelligent energy-saving control of the air compression system is achieved.

The invention relates to the technical field of safety monitoring, and discloses a linkage monitoring method and system for a gas leakage alarm and a gas meter, and the method comprises the steps: periodically regulating and controlling the temperature of a gas sensor, obtaining monitoring values at different temperatures, calculating a specific value, and recognizing gas leakage and non-leakage gas sources; when leakage is judged, activating a camera to shoot an image of a gas meter counter, synchronously acquiring temperature and pressure data, and uploading the temperature and pressure data to a data processing center; a gas consumption value is extracted based on an image recognition algorithm, environmental interference is corrected in combination with an ideal gas state equation and a dynamic compensation model, and high-precision gas consumption is generated; and by analyzing the time sequence relevance between the corrected consumption and the leakage signal, if an abnormal condition is met, the valve is automatically closed, and an alarm is given. According to the invention, high precision, low false alarm and quick response of gas leakage detection can be realized.

The invention provides an intelligent analysis and diagnosis system for caliber matching of a gas measuring instrument, which relates to the technical field of data processing and comprises an extraction module, an analysis and diagnosis module and an analysis and diagnosis module, selecting a main pipe intersection P1, a user access point P2 and a pressure regulating station output point P3 as three dynamic topology reference points; constructing a dynamic topological unit according to the three points, performing regional division on the unit, and extracting pressure-flow coupling feature values of sub-regions; the correction module is used for performing weighted correction on the user gas consumption demand sudden change probability feature vector through the pressure-flow coupling feature value to generate a corrected sudden change probability feature vector; and the processing module is used for performing tensor splicing on the corrected mutation probability feature vector and the pipeline equivalent inner diameter dynamic feature vector, and inputting a full-connection diagnosis network to generate a caliber matching deviation index. The intelligent operation efficiency of gas supply can be improved.

Provided are a method, an IoT system, and a storage medium for demand management of natural gas in distributed energy pipelines. The method includes: determining a commercial gas consumption change sequence; obtaining gas flow data; obtaining historical gas consumption data based on the gas flow data; determining a residential gas consumption change sequence; determining a demand volume sequence based on the residential gas consumption change sequence, the commercial gas consumption change sequence, and the historical gas consumption data; constructing a micro-pipeline network map based on a low-pressure transportation network, a current gas storage amount and a storage capacity of a gas field station, and the demand volume sequence; determining a gas storage coverage rate and a gas supply priority; determining a gas storage adjustment parameter based on the gas storage coverage rate and the gas supply priority; and generating a storage adjustment instruction based on the gas storage adjustment parameter.

The invention discloses a gas saving device for welding shielding gas, and relates to the technical field of shielding gas saving, the gas saving device comprises gas saving equipment, a fluid pipeline and a control part are arranged in the gas saving equipment, the control part drives a baffle in the fluid pipeline to move through obtained seam width data so as to obtain the maximum flow of welding the seam width; according to the method, the maximum fluid flow during welding of the seam width is determined through the seam width, namely, targeted fluid flow adjustment can be conducted according to different welding seam widths, the purpose of preliminary gas saving is achieved, and meanwhile covering of protective gas can be guaranteed. And the rotating angle of the dynamic adjusting plate is adjusted according to the proportion, so that the flow is dynamically adjusted to further save gas. According to the real-time change of the welding current, the gas flow is intelligently controlled, and gas is supplied after being specially treated on the premise that the gas formula is not changed. And the gas consumption is effectively reduced while the welding quality is ensured.

The invention discloses an indoor gas consumption abnormity early warning method, device and equipment and a storage medium. The method comprises the following steps: acquiring historical parameter information related to gas information in a target user room; according to the historical parameter information and a pre-constructed gas consumption prediction model, predicting the predicted gas consumption of indoor gas of the target user in a preset prediction period; according to the historical parameter information and the predicted gas consumption, determining a target consumption threshold interval in the preset prediction period; and in the preset prediction period, if the actual indoor gas consumption of the target user is located outside the target consumption threshold interval, determining that the indoor gas consumption of the target user is abnormal, and performing alarm processing. According to the method, the reliability of monitoring the tiny leakage can be improved, false alarm and false interference on the user experience are reduced, an active early warning mechanism is introduced, and a technical basis is provided for gas use safety early warning.

The utility model relates to the technical field of medical oxygen generators, and discloses a high-efficiency energy-saving PSA oxygen generator which comprises an adsorption tank, a gas inlet pipeline, a nitrogen discharge pipeline, an I-shaped balance pipeline, a first purging pipeline, a second purging pipeline, an oxygen outlet pipeline, a purity measurement pipeline, a qualified gas pipeline, an unqualified gas pipeline and an emptying pipeline, a throttling element is arranged on each of an inlet pipeline and an outlet pipeline of the adsorption tank and used for controlling the flow of gas when the adsorption tank is balanced, impact of high-speed gas on a molecular sieve is avoided, oxygen-enriched air can stay at the top of the adsorption tank in various balance modes, and desorbed low-concentration oxygen is adsorbed again to obtain the oxygen-enriched air. And the oxygen recovery rate is improved, so that the air consumption is reduced, the required power of an air compressor is reduced, and the energy consumption required by oxygen production is reduced.

The present invention discloses a gas infrared radiation and hot air dual-mode drying furnace for drying printing inks, which comprises a furnace body housing. Inside the furnace body housing, there are a heating chamber and two machine position chambers. The two machine position chambers are symmetrically distributed at the top and bottom of the heating chamber. An inlet and an outlet penetrating through the furnace body housing are respectively arranged on both sides of the middle of the heating chamber. The present invention heats printing paper through two modes of gas infrared radiation and hot air. Due to the physical properties that infrared rays can penetrate and objects can actively absorb the heat of infrared rays, the ink and the interior of the paper can be quickly heated. In the later stage, the high-temperature flue gas waste gas generated by the front-end gas infrared radiation burner is used, and is guided to the air knife for drying through the hot air circulation mode by a blower and a forced air blower. The gas consumption of the burner is lower, and the heating speed is faster, further reducing the gas energy consumption. Under the condition of the same gas consumption, the speed of the printing press is significantly increased, meeting the requirement of lower gas energy consumption of existing conventional gas burners.

The invention provides a compound hydrate inhibitor and a natural gas consumption prediction device and method, the compound hydrate inhibitor comprises a kinetic hydrate inhibitor, a thermodynamic hydrate inhibitor and 900-1000 parts of solvent water, the kinetic hydrate inhibitor comprises 5-20 parts by weight of polyvinylpyrrolidone, the thermodynamic hydrate inhibitor comprises 10-20 parts by weight of polyvinylpyrrolidone, and the solvent water comprises 10-20 parts by weight of a solvent. The thermodynamic hydrate inhibitor is prepared from 19 to 38 parts of monohydric alcohol compound and 15 to 20 parts of soluble chlorine salt. The hydrate inhibitor has a remarkable inhibition effect on a hydrate nucleation stage, after polyvinylpyrrolidone, methyl alcohol and sodium chloride are mixed, the inhibition effect of the hydrate can be synergistically improved, the compound hydrate inhibitor is applied to a natural gas consumption prediction device, and the natural gas consumption prediction efficiency is improved. Generation of natural gas hydrate in the pipeline conveying process of natural gas can be further simulated, and more accurate natural gas consumption prediction can be carried out on an untested formula or according to actual natural gas conveying conditions.

The invention relates to the technical field of steel plant air compression, and discloses a steel plant air compression system universal energy-saving and stable air supply control method which comprises the following steps that S1, the total air consumption demand Q of a steel plant compressed air pipe network is monitored in real time; s2, executing a load segmentation control strategy based on the total gas consumption demand Q; s3, loading and unloading operation of the power frequency air compressor and rotation speed adjustment of the variable frequency air compressor are controlled in a coordinated mode through a central energy-saving control unit; and S4, a pressure buffer tank is arranged on an output pipeline of the variable-frequency air compressor and used for stabilizing the pressure of the pipe network. The total air consumption demand Q is divided into two sections, the power frequency machine is started and stopped according to the N + 1 principle, and the frequency converter is supplemented for continuous quantity supplement, so that the system can operate only with the minimum necessary unit in any load scene, energy waste caused by over-start and over-stop in a traditional scheme is avoided, and overall reduction of compressed air production energy consumption is realized.

The present application relates to the gas lift type mechanical device for liquid pumping and discharging, which is especially suitable for oil exploitation, natural gas well liquid discharging and gas pumping, and underground water exploitation in industrial and agricultural production and life. The chamber gas liquid pumping and discharging device is composed of a unique U-shaped valve (10), a gas mixing valve (14) and a chamber (12), and a plurality of open chamber sections are formed on the production pipe, so that the upward fluid is divided into a plurality of gas pushing liquid and liquid pushing gas sections, thereby reducing the flow pressure and facilitating the production. The gas mixing valve (14) has the function of automatically adjusting the density of the fluid, so that the gas injection amount and the liquid pumping amount are always optimal, the gas consumption is only 15-20% of the conventional gas lift method, and the device meets the needs of low energy oil well production or natural gas well liquid discharging and gas pumping. The yield of the production well can be controlled by adjusting the gas injection time or the gas injection amount of the ground equipment. The device has the advantages of simple structure, reliable work, long service life, low energy consumption and wide application range.

According to the multifunctional integrated oven trolley, fuel gas is adopted as energy, smoke generated in the barbecuing process can be reduced, no charcoal ash is left, and cleaning and maintaining are convenient; the multiple straight pipe furnace ends can be independently controlled, a user can adjust fire power according to requirements, gas consumption is reduced, the overall temperature control precision is improved, and partition temperature control is supported; the movable cabinet body is convenient to move, and food materials are convenient to stack due to the arrangement of the storage table; through the design of the exhaust fume collecting hood and the exhaust fume extraction device, exhaust fume gas generated in the barbecue process can be extracted, meanwhile, after the hood body rotates upwards by 90 degrees to be opened, some scattered exhaust fume can enter the main fume suction channel of the exhaust fume collecting hood along the auxiliary fume suction channel and the auxiliary fume suction opening, and due to the fact that the coverage range of the hood body is large, the range of the hood body is large. The range of suction of the spilled oil smoke is larger, so that the spilled oil smoke gas is further sucked, and finally, the oil smoke gas subjected to concentrated suction can be matched with a related oil smoke purifier for purification treatment.

A method for distribution controlling of a smart gas pipeline is provided, the method including: obtaining historical usage data of end-users of a target pipeline; determining a distribution demand sequence based on the historical usage data; obtaining historical monitoring data and initial gas supply parameters of a gas supply source; determining a gas consumption peak period based on the historical monitoring data; in response to determining that a gas delivery time point is in the gas consumption peak period: determining a peak regulation parameter for the target pipeline based on the distribution demand sequence and the initial gas supply parameters; and generating a peak regulation distribution instruction based on the peak regulation parameter to control the distribution control device in the target pipeline to carry out a distribution peak regulation operation in accordance with the peak regulation parameter.

The embodiment of the invention relates to a resident gas consumption checking method and device, electronic equipment and a storage medium, and the method comprises the steps: carrying out the clustering of all urban gas customers based on a gas consumption sequence of the urban gas customers, and obtaining different clusters; simulating a proportionality coefficient model according to the per-household gas consumption sequences of any two urban gas customers in the same cluster and the target difference characteristics between the two urban gas customers; migrating the proportionality coefficient model to other urban gas customers in the same cluster, and calculating the per-household gas consumption sequence of all urban gas customers in the same cluster; and calculating the gas consumption of all residents according to the per-household gas consumption sequence and the resident household number of the city gas customers of the same cluster so as to realize checking. And the accuracy of checking the data is improved.

The invention discloses a virtual power plant optimal scheduling method based on a two-stage dynamic game, which is used for solving the problems that the current related technology has insufficient attention on a carbon transaction and power market cooperation mechanism and lacks modeling for interaction of supply and demand parties under the dynamic game, so that the carbon emission reduction effect and economic benefit are difficult to balance, and the scheduling efficiency is poor. And the sustainability of the scheduling strategy is insufficient. The method comprises the following steps: acquiring gas consumption data and energy storage charging and discharging data of a virtual power plant; constructing a gas turbine power output model based on the gas consumption data, and constructing an energy storage battery operation model based on the energy storage charging and discharging data; in combination with system standby constraints, introducing a sectional excitation type carbon emission mechanism, and constructing a constraint model containing carbon emission; based on a gas turbine power output model, an energy storage battery operation model and a carbon-containing emission constraint model, constructing a scheduling balance optimization model based on a two-stage dynamic game; and carrying out optimization solution on the scheduling balance optimization model to obtain an optimized scheduling result of the virtual power plant.

The present invention relates to a control method for energy-saving pressure swing adsorption gas production equipment. Based on a control system, a first valve group of an adsorption unit, and a regulating valve, a first flowmeter, a second flowmeter, a gas purity analyzer, and a pressure gauge of a gas storage unit, the control method includes the following steps: the control system calculates the total flow Q passing through the second flowmeter in a set time period, and compares it with the total flow Q' passing through the second flowmeter in the previous set time period. When Q>Q', the control system controls the opening of the regulating valve according to the detection value of the first flowmeter, shortening the adsorption cycle of the adsorption unit until Q and Q' are equal; when Q=Q', the control system controls the opening of the regulating valve to remain unchanged; when Q<Q', the control system controls the opening of the regulating valve according to the detection value of the pressure gauge, extending the adsorption cycle of the adsorption unit until Q and Q' are equal. The control method can automatically adjust the operating parameters to the most energy-saving state according to the real-time gas consumption and ensure that the product gas meets the usage demand.

The invention relates to the technical field of laser welding, and particularly discloses laser welding equipment for instrument and meter production and manufacturing, the laser welding equipment for instrument and meter production and manufacturing achieves the purpose of stably clamping a circular workpiece, and the equipment is supported by an equipment bottom plate and an equipment bracket; the welding support supports the electric lifting table and the laser welding head, the laser welding head welds components, the protection device performs gas protection on the components, gas consumption is low while gas protection is performed in the welding process, and the density of pure inert gas is slightly larger than that of air, so that gas retention is facilitated, and the welding quality is improved. According to the welding device, the circular shell accessories are fixed and rotated through the corresponding assemblies, so that the welding requirements of different angles are met, meanwhile, liquid inert gas is gasified and heated through the pneumatic device, welding embrittlement caused by gas supercooling is avoided, and the error influence caused by fan vibration on welding is counteracted.

The invention relates to the field of gas pressure anomaly detection, and particularly discloses a catering user gas meter pressure anomaly fluctuation risk early warning method which comprises the following steps: S1, based on historical gas pressure data, determining a pressure upper and lower limit threshold value and a pressure change rate threshold value, and constructing a dynamic gas consumption behavior model; s2, gas pressure data are monitored in real time, when a pressure value exceeds a corresponding threshold value range or a pressure change rate exceeds a corresponding threshold value, pressure abnormity early warning is triggered, and an abnormity type is identified; s3, based on the pressure overrun characteristic and fluctuation characteristic of the gas pressure curve, the risk grade is evaluated, and grading early warning is started; and S4, judging whether fluctuation is synchronous or not and carrying out fault positioning by synchronously analyzing time-space correlation characteristics of the gas pressure curve and the gas flow curve. Through multi-dimensional feature analysis, dynamic modeling and comprehensive risk assessment, abnormity can be accurately identified, a fault source can be distinguished, and the gas use safety and the operation and maintenance efficiency are effectively improved.

The embodiment of the invention relates to the technical field of database management and natural language processing, and discloses a gas consumption prediction method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining historical data related to the gas consumption in a database corresponding to a target area; performing time sequence analysis on the historical data to obtain initial gas consumption characteristic data; performing feature extraction on the initial gas consumption feature data to obtain local gas consumption feature data and global gas consumption feature data; and based on the local gas consumption characteristic data and the global gas consumption characteristic data, obtaining a gas consumption prediction value of the target area. By applying the technical scheme of the invention, the efficiency and accuracy of predicting the gas consumption of the fuel gas can be improved.

The invention relates to an oil-free digital energy air compression station monitoring system based on an air floating shaft, which comprises a data acquisition module, a communication module, a central processing unit, a monitoring terminal and a control execution module, and is characterized in that the data acquisition module is responsible for acquiring information such as the rotating speed of the air floating shaft, the inlet and outlet pressure and temperature of an air compressor, motor operation parameters and the like in real time; the communication module is used for transmitting the acquired data to the central processing unit; the central processing unit analyzes, processes and stores the received data and generates a corresponding control signal; the monitoring terminal is used for displaying information and receiving an operation instruction; and the control execution module controls the air compression station according to the control signal. According to the system, oil pollution is completely eradicated through an oil-free lubrication air floating shaft technology, and the air quality is guaranteed; accurate monitoring and fault early warning of core components and overall working conditions of the equipment are achieved through intelligent monitoring, and the stability and reliability of the equipment are improved; an operation strategy is intelligently optimized according to actual gas consumption requirements, and energy conservation and consumption reduction are achieved; and remote monitoring and management are supported.

The invention discloses a KD-Tree SHAP attribution analysis method and device for natural gas sales and electronic equipment. The method comprises the following steps: acquiring an influence factor data sequence associated with the gas consumption of a user; according to the influence factor data sequence, constructing a KD-Tree; according to the KD-Tree and the trained black box prediction model, obtaining a Shapley value of each piece of influence factor data in the influence factor data sequence; and according to the Shapley value of each piece of influence factor data, determining the contribution degree of each piece of influence factor data to the gas consumption of the user in the preset time period. According to the method, the process of sampling in the influence factor data sequence is omitted through the KD-Tree, the calculation efficiency of the Shapley value is effectively improved, the problems that the calculation amount of the Shapley value is too large and the calculation result is unstable due to the influence of the explaining feature sequence are solved, and the calculation efficiency of the Shapley value is improved. The influence degree of various influence factors on the natural gas sales volume of the user can be efficiently and accurately analyzed and obtained.

The invention discloses an air compression station flow supply and demand gap calculation method based on multi-source data and a dynamic game, and belongs to the technical field of industrial air compression station intelligent control. Constructing a pipeline pressure drop dynamic model based on the multi-source real-time data; establishing a workshop demand dynamic response function based on the multi-source real-time data, and further calculating an air compression station flow supply and demand gap; a non-cooperative game model of multiple air compressor units and multiple workshops is constructed, and the minimum total energy consumption of air compression stations serves as a target function; based on the air compression station flow supply and demand gap, an improved Shapley value method is adopted to distribute game benefits, a Q-learning strategy updating mechanism is combined to realize dynamic game parameter adaptive adjustment, and a gas production distribution scheme of multiple units is optimized, so that the method can reduce pressure drop calculation errors, improve supply and demand gap prediction accuracy, solve the problem of large matching errors of a traditional method, and improve the air compression station flow supply and demand gap prediction efficiency. And the comprehensive energy consumption of the air compression station is high.

The invention relates to the technical field of gas hydrate generation and carbon dioxide capture and storage, and discloses a gas hydrate generation accelerant as well as a preparation method and application thereof. The gas hydrate generation accelerant is prepared from water, sucralose and graphene oxide dispersion liquid. According to the gas hydrate generation accelerant provided by the invention, sucralose and graphene oxide dispersion liquid are used, so that the surface tension of a solution can be effectively reduced, the gas consumption in the hydrate generation process is improved, and the induction time of hydrate generation is shortened and the generation efficiency is improved by strengthening the heat transfer and mass transfer processes in the hydrate generation process; efficient capture and storage of carbon dioxide are realized, and a wide prospect is provided for practical application of capture and storage of carbon dioxide by a hydrate technology.

The invention relates to the technical field of urban pipeline natural gas transmission and distribution, and particularly provides an urban gas pressure regulation control method and system, and the method comprises the steps: obtaining the current transmission and distribution data of a gas transmission and distribution trunk line at regular time based on a plurality of data collection terminals; the plurality of data acquisition terminals are additionally arranged outside a gas transmission and distribution main line; processing the current transmission and distribution data, and determining the preloading pressure of a pressure regulating device corresponding to the gas transmission and distribution main line; the preloading pressure is a difference value between a preset pressure value of the pressure regulating device and a current spring pressure value; and the pressure regulating device is controlled to perform composite pressure increasing or reducing treatment based on the preloading pressure. According to the invention, based on the current transmission and distribution data acquired by the plurality of data acquisition terminals installed outside the gas transmission and distribution trunk line, the preloading pressure of the pressure regulating device corresponding to the gas transmission and distribution trunk line is analyzed and generated, and the preloading pressure is loaded into the pressure regulating spring cavity of the pressure regulating device to complete increase and decrease pressure regulation. And the stability and the reliability of the pressure regulating system in the gas consumption peak period and the low peak period are improved.

The invention relates to a method for regulating and controlling porous carbon for capacitive desalination by utilizing negative pressure pulse flow. The method specifically comprises the following steps: placing the porous carbon in a heating furnace, continuously contacting the porous carbon with airflow at a high temperature, rapidly reducing the absolute static pressure of the gas in the furnace to be less than or equal to 85kPa every 8-100min during the contact period, then restoring to be close to the initial static pressure to form negative-pressure pulse airflow, and intermittently introducing the pulse airflow in this way until the appropriate contact time is reached. According to the invention, the specific surface area, the total pore volume and the capacitance desalination amount of the pore-containing carbon can be improved without increasing energy consumption; compared with constant-pressure airflow modified porous carbon, the reaction temperature, the reaction time or the gas consumption can be reduced under the condition of reaching the same carbon index.

The invention discloses a non-resident user safety supervision system based on smart gas, and relates to the technical field of smart gas safety supervision, and the system comprises a smart gas non-resident user service platform which is used for providing a multi-terminal convenient operation entrance for non-resident users through a user interaction module, precise contact of self-inspection reminding and hidden danger early warning is achieved by means of a message pushing module, storage, query and visual analysis of user archives, self-inspection and rectification data are completed by means of a data management module, and a user side full-process service closed loop is formed; the intelligent fuel gas non-resident user supervision platform is used for carrying out intelligent identification and model optimization on hidden danger data through an AI analysis module, generating a grading inspection plan by means of a supervision decision module, supporting cross-department cooperative supervision, and realizing data security interaction with a service platform, intelligent equipment and a third-party system by using a data interface module. And an intelligent and collaborative supervision system is constructed. According to the invention, full-process management and control of gas consumption safety of non-resident users can be realized.

The invention discloses a plasma cutting machine with a pressure limiting mechanism, which comprises a cutting machine body, a plasma generator, a nozzle, an electrode and a gas supply system, and is characterized in that the pressure limiting mechanism is integrated in the cutting machine body, and the pressure limiting mechanism comprises a pressure dynamic adjusting assembly, an over-limit cutting assembly and a pressure buffer assembly; the dynamic pressure adjusting assembly comprises an air channel pipeline, a fixing seat, a transmission screw, an adjusting block and a cam, and the transmission screw is driven by a driving motor to drive the adjusting block to move along the sliding groove so as to change the sectional area of the air channel pipeline; by means of the pressure dynamic adjusting assembly, gas pressure can be monitored and adjusted in real time, stability of gas supply is kept, compared with a traditional spring type pressure reducing valve, the adjusting mechanism is faster in response, pressure fluctuation of an external gas source or sudden change of gas consumption in the cutting process can be effectively coped with, and therefore fluctuation of plasma arc energy is reduced, and the cutting efficiency is improved. Cutting precision is improved, and cut flatness is guaranteed.

The utility model relates to the technical field of coke oven heating, in particular to a coke oven gas heating single-hole combustion chamber temperature adjusting system which comprises adjusting units, one end of each adjusting unit is connected with a heating gas main pipe, and the other end of each adjusting unit is connected with a corresponding combustion chamber. The utility model has the advantages that the regulating unit is connected with the combustion chamber gas heating pipeline in parallel, so that the regulating valves are additionally arranged on the two sides of the pore plate box while the original function of the pore plate box is reserved, and the temperature regulating effect is improved; the function of an original pore plate box is reserved, when the opening of the adjusting valve is too large or too small and cannot be adjusted, an operator can change the opening of the adjusting valve by changing the pore plate in the pore plate box, and operation is easy and easy to achieve; the number of the regulating valves of the regulating unit of each coke oven is large, and the regulating valves are arranged on the small-size pipeline connected with the gas main pipe in parallel, so that the caliber of each regulating valve is greatly reduced; the size of the regulating valve is reduced, so that the gas consumption of each regulating valve is reduced, and the energy consumption is greatly reduced.