2743 results about "Gas pipeline" patented technology

The invention relates to the technical field of urban public safety, in particular to an underground gas pipe network safety pre-warning system, which comprises an acquisition module, a monitoring module, a monitoring module and a control module, and is characterized in that the acquisition module is used for arranging sensing nodes at key positions of a gas pipeline body and a surrounding environment to form a distributed monitoring network; the method comprises the following steps: synchronously acquiring mechanical deformation, methane concentration and mechanical vibration data of a pipeline through a distributed monitoring network to obtain a multi-modal sensing data set; the fusion module is used for performing humidity and temperature interference correction on the methane concentration data in the multi-modal sensing data set to obtain corrected methane concentration data; and performing fusion processing on the mechanical deformation data, the mechanical vibration data and the corrected methane concentration data to obtain an initial pipeline safety state evaluation index. Through multi-source data fusion, environmental interference correction and spatial domain calibration, transmission and dynamic analysis are combined, and precise early warning and efficient linkage disposal of the safety state of the gas pipe network are achieved.

The invention discloses a fuel gas intelligent valve with point type laser methane sensors, and relates to the field of fuel gas intelligent valves, and the fuel gas intelligent valve comprises an equipment installation module which is used for installing three point type laser methane sensors and collecting interface methane concentration values; the data acquisition module is used for acquiring pipeline parameters and environment parameter data inside and outside the interface; the risk assessment module is used for calculating the methane concentration change rate according to the methane concentration value and assessing whether gas leakage exists at each interface; the fuel gas leakage positioning module is used for constructing a fuel gas leakage positioning model based on a neural network and acquiring the probability of the fuel gas leakage risk at each interface; the valve self-adjusting module is used for determining whether the gas leakage point is a leakage point or not according to the gas leakage risk probability; and the historical data analysis module is used for calculating the precision ratio, the recall rate and the F1-Score value by using the historical data and the field actual measurement result. The leakage risk of the gas pipeline is effectively diagnosed and positioned, and the opening degree of the valve is intelligently controlled.

The invention relates to the technical field of pipeline detection, and particularly discloses a corrosion analysis method and device for gas pipeline integrity management and a medium. The method comprises the following steps: determining a key corrosion risk position; acquiring pipeline state data of the key corrosion risk position; analyzing the pipeline state data based on a preset corrosion prediction model to generate a corrosion degree; determining the residual strength of the key corrosion risk position based on the corrosion degree and the pipeline attribute data; and evaluating the structural integrity of the key corrosion risk position based on the residual strength, and generating a corrosion analysis result. Through corrosion degree analysis and structural integrity analysis of a key corrosion risk position, fundamental conversion from static general detection to dynamic fine detection is realized, a real high-risk position in a current state can be actively identified, the number of unnecessary excavation verification times is greatly reduced, and the construction efficiency is improved. And the maintenance cost is obviously saved, and secondary damage to the pipeline due to excessive detection is avoided.

The invention discloses a gas pipeline operation risk dynamic evaluation system based on big data analysis, and relates to the technical field of gas pipeline safety monitoring, and the system comprises a multi-source data processing module, a feature extraction module, a local risk modeling module, a risk evolution prediction module and a dynamic early warning module. The multi-source data processing module is used for acquiring original multi-source time sequence data from a pressure sensor, a flow sensor, a temperature sensor, a geological monitoring device and a third-party construction disturbance data interface of a gas pipeline network, and performing time alignment, abnormity elimination, normalization and characteristic standardization processing on the data; a uniform input feature vector is formed; and the feature extraction module is used for decomposing the normalized time series data into a low-frequency trend component and a high-frequency residual signal by using discrete wavelet decomposition. The gas pipeline risk assessment system solves the problems of low gas pipeline risk assessment precision, insufficient risk propagation modeling and lack of dynamic early warning and emergency strategies in the prior art.

The invention discloses a gas pipeline leakage rapid detection method and system, and belongs to the technical field of computers. According to the technical scheme, the problem that the reliability of the sensor is reduced due to environmental interference is solved to a certain extent, and optimal utilization of the multi-modal data is ensured through dynamic weight distribution. The cross-modal feature fusion mechanism significantly improves the feature recognition precision in a complex leakage scene, and the modal collaboration degree parameter effectively eliminates abnormal data interference. The introduction of spatio-temporal evolution characteristics provides diffusion path prediction for emergency disposal, and forms a full-flow solution of coverage detection, positioning and prediction.

The invention provides an intelligent gas pipe network valve remote control supervision Internet of Things system and method, and relates to the field of intelligent gas control. The method is realized based on the Internet of Things system, and comprises the following steps: obtaining pipe network information and performance parameters of a control assembly, and uploading the performance parameters to a government safety supervision management platform; obtaining a parameter confirmation instruction, determining layout parameters, and uploading the layout parameters to a government safety supervision management platform; a layout confirmation instruction is obtained, and layout parameters are sent to a gas maintenance object platform; after the layout is completed, the regulation and control compensation amount of the control assembly is determined based on the correction period and uploaded to a government safety supervision management platform; and a correction confirmation instruction is obtained, the control assembly is corrected based on the regulation and control compensation amount, the control assembly is controlled to regulate and control the coverage valve based on the regulation and control parameter set in the correction period, a regulation and control gas data pair is obtained, and the regulation and control compensation amount is determined. The arrangement position of the control assembly can be reasonably determined, and the regulation and control deviation is accurately evaluated to ensure the remote control effectiveness of the valve.

The invention discloses a gas pipeline leakage source positioning method, and relates to the field of gas leakage detection. According to the method, acceleration signals and sound wave signals are collected through sensors arranged at detection points, peak value extraction is carried out in respective corresponding frequency domain complex spectrums through data preprocessing, and main frequency signals and frequency multiplication signals are obtained; distinguishing real leakage and interference signals according to the stable frequency integral multiple relation characteristic and time sequence consistency of the two signals; the phase difference is calculated by extracting the phase of the dominant frequency signal and the phase of the corresponding frequency multiplication signal, and the position of the leakage source relative to the detection point is calculated by combining the path sound velocity. The method can capture small distance differences, effectively improves the precision and robustness of leakage positioning, and is suitable for online leakage monitoring and diagnosis of gas or liquid medium pipelines.

The utility model discloses a jacket heat preservation flame arrester for high-oxygen VOCs (volatile organic compounds) to enter dry quenching, which belongs to the technical field of flame arresters and comprises two valve bodies respectively communicated with a gas pipeline for the VOCs to enter the dry quenching and a flame arresting screen arranged between the two valve bodies, a jacket capable of introducing steam to preserve heat is arranged between the two valve bodies, and the two valve bodies are communicated with a gas pipeline for the VOCs to enter the dry quenching. The jacket is arranged on the outer side of the fire-retardant screen; a jacket inlet communicated with a steam pipeline is formed in one side of the jacket, and a jacket outlet communicated with a drain pipeline is formed in the other side of the jacket. According to the utility model, the temperature around the fire-retardant screen can be ensured not to be lower than the crystallization temperature of naphthalene gas, so that the naphthalene gas in VOCs gas can smoothly pass through the fire arrester and then enters dry quenching for incineration, and the VOCs are really discharged without external emission.

The invention discloses a smart city gas pipeline safety intelligent monitoring method based on digital twinning, and relates to the technical field of gas pipeline monitoring, and the method comprises the steps: building a gas pipe network digital twinning body of a target city gas pipeline based on digital twinning technology simulation; performing pipeline state calculation on a monitoring blind area pipeline section in the gas pipe network by using an interpolation prediction algorithm and a fluid simulation technology to generate a global monitoring data sequence network; performing pipeline leakage risk prediction on the plurality of pipeline sections according to the global monitoring data sequence network, outputting a plurality of pipeline leakage risk indexes, and constructing a pipeline leakage risk thermodynamic diagram; and identifying and marking a high-risk leakage area as a priority inspection area in the pipeline leakage risk thermodynamic diagram, generating an inspection work order based on the priority inspection area, and assigning the inspection work order to an inspection personnel terminal for manual inspection of pipeline leakage. The technical problems of low efficiency and poor early warning effect caused by blindness of gas pipeline inspection in the prior art are solved.

The utility model discloses a building gas leakage monitoring device based on pressure signal, which comprises a shell, a display arranged on the shell, a connecting pipe positioned in the shell, an electromagnetic valve, a pressure sensor and a controller, the electromagnetic valve and the pressure sensor are arranged on the connecting pipe, the controller is connected with the pressure sensor, the electromagnetic valve and the display, and the display is connected with the controller. The controller is connected with a power supply, and two pipe ends of the connecting pipe form connecting ports on the shell. The gas leakage monitoring device is installed on a gas main pipeline behind the pressure regulating box, gas pressure data are collected through the pressure sensor, whether the gas pipeline leaks or not is judged through the controller, gas leakage can be effectively monitored, and gas use safety is improved; the system can provide guidance basis for building low-pressure gas pipeline maintenance operation and accident early warning, and can be widely applied to the field of safety operation of low-pressure gas pipelines.

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 invention discloses an in-service town gas pipe network remote emergency cut-off valve transformation point selection method, and relates to the technical field of gas pipe network safety control, and the method comprises the steps: constructing a three-dimensional evaluation system comprising a pipe network connectivity index, a valve overflow rate index and an influence user number index, and correcting the importance index weight of the three-dimensional evaluation system; constructing a comprehensive evaluation model based on the three-dimensional evaluation system and the corrected importance index weight, and identifying a plurality of key valves based on the comprehensive evaluation model; based on the leakage consequence severity and rescue timeliness of the key valve, a remote emergency cut-off valve transformation priority evaluation model is constructed, and based on the remote emergency cut-off valve transformation priority evaluation model, the remote emergency cut-off valve transformation point location of the in-service town gas pipe network is determined. The problems of high transformation cost and low gas safety caused by the fact that a transformation point position cannot be reasonably selected by a valve transformation method of an urban gas pipe network which is put into operation are solved.

Disclosed are an IoT system, a method, and a storage medium for sampling and monitoring a smart gas pipeline. The method is executed by a government safety monitoring and management platform, and includes: obtaining pipeline sensing data; determining a sampling parameter based on the pipeline sensing data; and in response to obtaining at least one piece of sampling data from at least one sampling device, determining a fault detection command based on the sampling data, and sending the fault detection command to a gas maintenance object platform to schedule a manual inspection. The IoT system includes the government safety monitoring and management platform, a government safety monitoring sensing network platform, a government safety monitoring object platform, a gas company sensing network platform, a gas equipment object platform, and the gas maintenance object platform. The method may be executed by reading computer instructions stored in a non-transitory computer-readable storage medium.

The invention discloses a regional grid safety evaluation method and device based on smart gas and a medium, belongs to the technical field of gas safety supervision, and aims to solve the technical problem of how to overcome the defects of insufficient matching between grid division and gas facility characteristics and lagging leakage risk prediction in the prior art. In order to realize full-process intelligence from risk identification to closed-loop management and improve supervision efficiency and early warning precision, the technical scheme adopted by the invention is as follows: dividing a pressure sensitive grid: performing optimization division on a regional grid based on a gas pipeline pressure grade and facility distribution characteristics, and realizing accurate division of the regional grid where a pipe network is located by combining a GIS and an improved DBSCAN algorithm; acquiring three-level Internet of Things data: integrating sensor data of an unmanned aerial vehicle, a pipe network pressure device and a leakage monitoring device, and covering a full-link data system of a terminal sensing layer, an edge computing layer and a cloud storage layer; constructing a double-engine evaluation model; carrying out digital twinborn visualization; and scheduling the capability matrix.

The invention discloses a gas pipeline leakage analogue simulation platform and a multi-field traceability positioning system, and relates to the technical field of gas pipeline full-process monitoring and leakage early warning. The platform comprises a gas pipeline leakage similar physical simulation experiment platform, a suspended gas pipeline leakage multi-field traceability positioning system and a buried gas pipeline leakage multi-field traceability positioning system. The experiment platform reproduces real working conditions through an air source generating and conveying module, a multi-burial-depth adjustable inspection well vertical shunting structure and a complete air source processing system; the suspended system is based on strain field and sound wave field dual-field cooperative monitoring; the buried system is based on multi-field cooperative monitoring of a sound wave field, a geoelectric field, a strain field and a temperature field. According to the invention, through cooperative arrangement of multiple sensors, multi-field data fusion processing and traceability positioning, precise identification and high-precision positioning of gas leakage are realized, and the method is suitable for safety monitoring and intelligent early warning of gas pipelines under complex working conditions.

The invention relates to the technical field of smart city public safety, in particular to an urban gas pipeline leakage risk intelligent early warning and positioning method and device.Firstly, a digital twinborn construction and dynamic coupling module constructs and drives a virtual image of a gas pipe network, then, a multi-modal data acquisition and fusion module comprehensively senses the state of the pipe network, and finally, the leakage risk of the gas pipeline is monitored. The intelligent early warning and positioning decision module realizes a core intelligent algorithm; a cloud-edge-end collaborative architecture is adopted, and a terminal sensor is responsible for data acquisition; the edge computing node is deployed in a regional pressure regulating station and is used for carrying out primary data processing and local real-time alarming; the cloud center deploys a digital twin platform and a core AI algorithm model, and performs big data analysis, simulation deduction and global decision. Compared with the prior art, the method can realize early and accurate identification and prediction of gas leakage and potential risks (such as abnormal stress) of the pipeline.

The invention discloses an auxiliary device for hydrogen production by water electrolysis, which relates to the technical field of hydrogen production by water electrolysis and is characterized by comprising a base frame, a water inlet pretreatment unit, an electrolysis unit, a gas-liquid separation and gas monitoring module and an intelligent operation regulation and control unit. The inlet water pretreatment unit is used for deeply purifying a water source through a multi-stage filtering device to produce deionized water meeting the electrolysis requirement; the electrolysis unit electrolyzes the purified water into a gas-liquid mixture of hydrogen, oxygen and water vapor; the gas-liquid separation and gas monitoring module adopts a vertical separation structure and a secondary separation system, and is combined with a hydrogen side oxygen sensor and an oxygen side hydrogen sensor to realize efficient gas-liquid separation and real-time gas purity monitoring; the intelligent operation regulation and control unit dynamically regulates electrolysis parameters and gas pipeline states based on monitoring data, and automatic closed-loop control is achieved. The device has the advantages of thorough water purification, high gas purity, safe and reliable operation, intelligent control and the like.

The utility model relates to the technical field of gas pipelines, in particular to a variable-wave-pitch gas appliance connecting pipe. A variable-wave-pitch gas appliance connecting pipe comprises a corrugated pipe body, a coating layer and connector assemblies connected to the two ends of the corrugated pipe body. The corrugated pipe body is composed of a wide-wave-pitch section and two dense-wave-pitch sections, and the two dense-wave-pitch sections are connected to the two ends of the wide-wave-pitch section in the length direction respectively. The two ends of the variable-wave-pitch gas appliance connecting pipe are convenient to bend, the variable-wave-pitch gas appliance connecting pipe is convenient to install in a narrow space and a place where a pipeline needs to be bent, a connector is not prone to loosening after installation, the sealing effect is good, a right-angle elbow bent by 90 degrees does not need to be welded, cost is effectively reduced, a user can conveniently judge the position where the corrugated pipe is easy to bend, operation convenience is high, and practicability is high. The technical problems that when an existing corrugated pipe is installed in a narrow space, the end of the pipe needs to be bent in a hard mode, a connector is prone to loosening, the sealing effect is affected, and the cost is high when a 90-degree right-angle elbow is used are solved.

The utility model relates to the technical field of coke oven heating, in particular to a mixed gas heating single-hole combustion chamber temperature adjusting system which comprises adjusting units, one end of each adjusting unit is connected with a mixed heating gas main pipe, and the other end of each adjusting unit is connected with a corresponding waste gas shutter. And the mixed coal gas sequentially passes through the mixed heating coal gas main pipe, the corresponding adjusting unit, the corresponding waste gas opening and closing device and the corresponding heat storage chamber to enter the corresponding combustion chamber. The utility model has the advantages that: the original gas heating pipeline is improved, and the regulating valve is connected with the gas heating pipeline in parallel on the basis of not changing equipment (the equipment comprises the regulating cock, the pore plate box and the exchange cock) on the gas heating pipeline, so that the independence of manual regulation is ensured, and the gas heating pipeline is convenient to use. The furnace temperature adjusting effect of each combustion chamber during mixed gas heating is improved; and various pore plates with different diameters are arranged in the pore plate box, so that the requirement of manual adjustment can be met.

The invention discloses a rotary kiln pyrolysis process preheating and replacing method which comprises the following steps: replacing and preheating an upgrading system when a rotary kiln is started, performing low-load operation on the rotary kiln, heating the rotary kiln by a rotary kiln hot blast stove and a flue gas fan, closing a pipeline valve from a dry gas fan to a first dust remover, and performing low-load operation on the rotary kiln; a rotary kiln nitrogen replacement valve is slightly opened, nitrogen enters the rotary kiln through a dry gas guide screw for replacement and heat removal, an oil and gas pipeline is preheated, direct cooling tower spraying cooling water and indirect cooling tower circulating cooling water are put into use, a coal gas fan is started for system circulation, and an electrical tar precipitator outlet is opened to a rotary kiln starting line valve; the invention further discloses a rotary kiln quality improvement system, the rotary kiln pyrolysis process preheating and replacement method is adopted, the start-up time is effectively shortened, the investment and operation cost is saved, and meanwhile a foundation is laid for long-period stable operation of the system.

The invention belongs to the technical field of gas pipeline fault prediction, and discloses a pipe gallery gas pipeline defect identification method and system and an inspection robot. The method comprises the following steps: synchronously sensing multi-dimensional time sequence data of a pipe gallery gas pipeline, wherein the multi-dimensional time sequence data comprises gas pipeline time sequence data, combustible gas concentration time sequence data and environment time sequence data; performing structured processing and feature extraction on the multi-dimensional time series data, and outputting a multi-modal feature data set for defect identification and risk assessment; performing joint modeling based on the multi-modal feature data set to obtain a fusion interaction embedding vector, and identifying a coupling abnormal state with causal correlation or collaborative performance between the structural defect and the trace gas leakage based on the fusion interaction embedding vector; based on the fusion interaction embedding vector and the coupling abnormal state, the early defect type of the pipe gallery gas pipeline is recognized; the early-stage defect identification accuracy and response speed of the pipe gallery gas pipeline are remarkably improved.

The invention relates to the technical field of waste gas treatment, and provides an oil tank waste gas adsorption treatment system and a control method. The anti-explosion variable-frequency induced draft fan is arranged on the main oil and gas pipeline; the flame arrester is arranged on the main oil and gas pipeline and located on the upstream of the air inlet direction of the anti-explosion variable-frequency induced draft fan; a gas inlet of the first activated carbon adsorption box is communicated with the main oil-gas pipeline, and a gas outlet of the first activated carbon adsorption box is communicated with a gas inlet of the second activated carbon adsorption box in series; the inlet pressure sensor is arranged at the air inlet end of the first activated carbon adsorption box; the outlet pressure sensor is arranged at the air outlet end of the second activated carbon adsorption box; the inlet valve is arranged at the air inlet end of the first activated carbon adsorption box, and the outlet valve is arranged at the air outlet end of the second activated carbon adsorption box. Through cooperation of series adsorption, active air induction and intelligent monitoring, multiple functions of efficient purification, safe operation and state early warning of the oil tank waste gas adsorption treatment system are achieved.

The embodiment of the present specification provides a smart gas emergency gas supply device, which is an emergency vehicle, the emergency vehicle comprising a skid-mounted vehicle, a gas storage tank, an extendable pipeline group, a pressure regulating device, a gasification device and a control module, wherein the control module is configured to determine the operating parameters of the pressure regulating device and the gasification device based on an emergency gas supply scheme of the smart gas emergency gas supply device, wherein the emergency gas supply scheme at least comprises a gas source selection scheme and a gas demand, and the gas source selection scheme at least comprises gas pipeline network cross connection and gas tank direct supply.

The utility model discloses a desulfurization liquid foam tank negative pressure defoaming device which comprises a defoaming box and a vortex fan, one side of the bottom of the defoaming box is connected with a desulfurization regeneration tower through a liquid inlet pipe, and the other side of the bottom of the defoaming box is connected with a foam tank through a liquid discharge pipe. An air inlet of the vortex fan is connected with an air outlet hole in the top of the defoaming box through an air inlet pipe, an air outlet of the vortex fan is connected with a negative pressure tail gas pipeline through an air outlet pipe, and valves are arranged on the liquid discharge pipe, the air inlet pipe and the liquid inlet pipe. The defoaming box disclosed by the utility model is arranged between the desulfurization regeneration tower and the foam tank, bubbles at the upper part of foam liquid entering the defoaming box are broken by utilizing negative pressure and centrifugal force generated by the vortex fan, and the defoamed foam liquid enters the foam tank, so that the influence on the operation precision caused by a large amount of accumulated foams in the foam tank can be avoided, and the field operation environment is effectively improved.

The invention discloses a non-invasive ultrasonic gas concentration and flow synchronous measurement device, and relates to the field of gas measurement equipment. The clamp body clamps and wraps the gas pipeline, and the clamp body is provided with a mounting space; the transducer assembly comprises a pair of ultrasonic transducers, each ultrasonic transducer comprises a sound wave generating surface, and a non-zero included angle is formed between the sound wave generating surface and the extending direction of the gas pipeline; the flexible ultrasonic transmission assembly comprises an acoustic coupling piece and an acoustic wave absorbing piece, the acoustic coupling piece is used for constructing a sound wave conduction path from the ultrasonic transducer to the gas pipeline in the first direction, and the acoustic wave absorbing piece is used for attenuating structural waves propagating in the second direction along the outer wall of the gas pipeline. By adopting the scheme, high-efficiency and high-precision gas concentration and flow measurement is realized on the premise of non-intrusive gas measurement equipment.

The invention relates to the technical field of corrosion protection of petroleum pipes, and discloses a test system for simulating the corrosion inhibition effect of an intermittent filling corrosion inhibitor on a petroleum pipe, which comprises a temperature adjusting piece, a stirring assembly, an air inlet and outlet pipeline valve, a temperature and pressure sensing assembly and a corrosion inhibitor filling device which are arranged on a high-temperature and high-pressure kettle device, while petroleum pipe working condition simulation environments with different temperatures, gases, air pressures and medium scouring flow rates are simulated, the test control terminal controls the corrosion inhibitor to be dynamically and intermittently injected according to a periodic corrosion effect detection result of the corrosion effect detection device on the pipe sample. Therefore, on the basis of providing a petroleum pipe working condition simulation environment high-temperature and high-pressure kettle, the coupling relationship between working condition dynamic change and corrosion inhibitor consumption can be considered, and a corrosion inhibitor intermittent filling control scheme containing a periodic filling interval and a periodic filling amount is generated based on dynamic optimization of a previous corrosion inhibition effect; and fairness and accuracy of different corrosion inhibitors in corrosion inhibition effect test and evaluation are improved.

The invention discloses a pipeline gas safety valve control method and system, and relates to the technical field of gas safety control, and the method comprises the following steps: obtaining the operation data of a gas pipeline, constructing a gas pipeline operation state portrait, extracting evolution characteristics, and generating an operation state characteristic vector; according to the running state feature vector, grading the running state, dynamically correcting a division threshold value according to historical running data, and outputting a corresponding safety valve control decision instruction; the safety valve is driven to execute opening and closing actions according to the safety valve control decision instruction, the consistency between the actual action state of the valve and the control instruction is verified, and valve execution result data is generated; writing back and updating the operation state feature construction process according to the valve execution result data; through the running state portrait and closed-loop feedback control, the problems that in traditional pipeline gas safety valve control, the control decision adaptability is not high, and the execution result lacks feedback are solved.

The invention provides an intelligent gas pipe network device energy-saving monitoring method and an Internet of Things system, and relates to the field of gas pipe network operation, the intelligent gas pipe network device energy-saving monitoring Internet of Things system is executed by a gas company management platform of the intelligent gas pipe network device energy-saving monitoring Internet of Things system, and the intelligent gas pipe network device energy-saving monitoring Internet of Things system comprises the following steps: determining a monitoring strategy based on the importance degree of a plurality of gas pipelines and device information of a plurality of groups of monitoring devices; based on the sensing data and the monitoring strategy, determining a target device in the multiple groups of monitoring devices, and an energy-saving grade and an energy-saving control parameter corresponding to the target device; and the energy-saving control parameters are sent to the intelligent gas government safety supervision management platform, and in response to the obtained confirmation information, a control instruction is generated based on the energy-saving control parameters to control the target device to execute the target operation. By determining the reasonable monitoring strategy, the data acquisition / transmission process of the monitoring device is managed, the data acquisition / transmission process can be better planned, and the overall available time of the monitoring device is prolonged while it is ensured that data is acquired in time.

The invention provides an urban gas pipeline risk prediction method and device, electronic equipment and a medium, and relates to the technical field of gas pipeline risk prediction, and the method comprises the steps: collecting multi-source real-time data of a gas pipeline, and carrying out the preprocessing of the data, and obtaining a plurality of target features used for the building of a prediction model E-XGBoost; performing time scale alignment and fusion on the plurality of target features to obtain a fused training data sample; establishing a prediction model E-XGBoost used for predicting the operation state and the fault risk of the gas pipeline; each node of a decision tree in the prediction model is split into three sub-nodes; and training a prediction model E-XGBoost based on the fused training data sample, the first-order gradient reflecting the variation trend of the prediction error and the second-order gradient reflecting the variation curvature of the prediction error to obtain a trained target prediction model E-XGBoost, so as to relieve the technical problem of insufficient accuracy and timeliness of risk prediction in the prior art.

The invention discloses a heating control method for an engine gas delivery pipeline of a marine gas generator set, which relates to the technical field of marine gas power systems, and comprises the following steps: collecting multi-dimensional environment state information of the gas delivery pipeline in real time, analyzing gas components and pressure fluctuation data, and calculating the temperature of the gas delivery pipeline; a theoretical dew point temperature and a potential paraffin precipitation temperature under real-time pressure are calculated by combining a fuel gas physical property database, a real-time heat exchange model is constructed by combining a pipeline outer wall temperature gradient and a cabin environment temperature, theoretical temperature attenuation curves of different positions of fuel gas in a pipeline are obtained, condensation and paraffin precipitation risk positions and degrees are predicted after comparison, and a real-time heat exchange model is established. And differential electric heat tracing control strategies of different sections of the pipeline are generated in combination with relative humidity data of the cabin. The method can adapt to the real-time physical property of gas and the heat exchange state of the pipeline section, and the heating control execution mode of the gas pipeline is optimized.