511 results about "Gas consumption" patented technology

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 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 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 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 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 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 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 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 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.

The invention relates to the technical field of PID control, in particular to an intelligent solar saving control method and device based on PID. The method comprises the following steps that a welding current-target flow velocity relation model is loaded, and PID parameters are initialized; then welding current is collected in real time, and the corresponding target flow velocity is calculated; comparing the target flow velocity with the actual flow velocity to obtain an error signal, and generating a control output quantity through PID control; then the control quantity is converted into an opening adjusting signal of the electric control proportional valve, and dynamic adjustment of the flow rate of the protective gas is achieved; and finally, current input, target generation, error calculation and valve regulation are executed circularly, and real-time closed-loop gas saving control in the welding process is achieved. Fine real-time intelligent control over the protective gas is achieved through welding working condition recognition, target flow velocity modeling and PID closed-loop self-adaptive regulation and control, the welding stability and the welding seam quality are improved, gas consumption is remarkably reduced, and the responsiveness and reliability of device operation are improved.

The invention relates to a low-fiber-falling air-jet vortex spinning yarn guiding cone and a nozzle device. The yarn guiding cone comprises a first circular truncated cone section, a second circular truncated cone section, a first cylindrical section and a second cylindrical section which are sequentially connected from upstream to downstream and are coaxially arranged; a first cylindrical hole, a second cylindrical hole, a first circular-truncated-cone-shaped hole, a second circular-truncated-cone-shaped hole and a third cylindrical hole which are communicated and coaxially arranged are sequentially formed in the yarn guiding cone from upstream to downstream, and one or more annular grooves are formed in the wall face, close to an inlet, of the first cylindrical hole. According to the yarn guiding cone, one or more annular grooves are formed in the wall face, close to the inlet, of the first cylindrical hole, so that the fiber falling amount in the spinning process is reduced under the condition that the air consumption of equipment is not increased, and particularly, fiber raw materials can be more sufficiently and efficiently utilized when fibers with poor length uniformity are spun; and fiber loss and raw material waste are reduced.

The invention discloses a gas supply device and a gas supply method. The gas supply method comprises the following steps: acquiring gas pressure in a gas storage tank; the gas pressure in the gas storage tank is compared with the gas use pressure to detect whether the gas pressure in the gas storage tank meets the gas use requirement or not; wherein if the gas pressure is smaller than the gas use pressure, the next step is executed; otherwise, if the gas pressure is larger than or equal to the gas using pressure, gas is supplied to the gas using end; gas is supplemented to the gas storage tank through the liquid storage tank; whether the gas pressure of the gas touch feeling after gas supply meets the gas use requirement or not is judged, and if the gas pressure is larger than or equal to the gas use pressure, gas is supplied to the gas use end; otherwise, if the gas pressure is smaller than the gas consumption pressure, continuously supplementing gas to the gas storage tank through the liquid storage tank until the gas pressure in the gas storage tank is larger than or equal to the gas consumption pressure.

The present invention discloses a control method, device, equipment and medium for a natural gas engine. The method comprises: obtaining operating parameters of the engine, and determining an optimal range of an intercooler temperature of the engine according to the operating conditions corresponding to the operating parameters; adjusting the intercooler temperature of the engine to an intercooler temperature lower limit value corresponding to the optimal range of the intercooler temperature by controlling the rotation speed of a fan when no detonation occurs in the engine; adjusting the ignition angle and the EGR rate of the engine to a first ignition angle and a first EGR rate, respectively, based on a first preset curve and the lower limit value of the intercooler temperature, and controlling the engine to operate at the first ignition angle and the first EGR rate so that the engine operates with minimum gas consumption, and returning to the step of obtaining the operating parameters of the engine; in such operation, the combustion efficiency of the engine can be improved, and the economy is good.

This invention discloses a gas-saving device for welding shielding gas, relating to the technical field of shielding gas saving. The device includes a gas-saving apparatus with internal fluid pipelines and control components. The control components first drive a baffle within the fluid pipeline to move based on the obtained weld width data, thereby obtaining the maximum flow rate for that weld width. The maximum fluid flow rate for welding at that weld width is determined first, allowing for targeted fluid flow rate adjustments based on different weld widths, achieving initial gas saving while ensuring adequate shielding gas coverage. Further gas saving is achieved by dynamically adjusting the rotation angle of a dynamic adjustment plate according to a proportional ratio. Based on real-time changes in welding current, the gas flow rate is intelligently controlled, and the gas is specially treated before supplying it without altering the gas formula. This effectively reduces gas consumption while ensuring welding quality.

The invention belongs to the field of energy conservation and consumption reduction of a gas boiler heat supply gas turbine power plant. The current gas-fired boiler adopts thermal deoxidization to control water supply and oxygen dissolution, water is supplied to a deaerator from an outlet of a secondary energy saver, the smoke exhaust temperature is about 60 DEG C, and waste heat is not fully utilized. Therefore, a novel pipeline system is constructed, a traditional heat exchange process is subverted, and exhaust smoke waste heat is utilized to the maximum extent through multiple heat exchange. The system comprises two sets of schemes adaptive to different operation states, and the schemes can be flexibly switched. When the gas-fired boiler runs, water supplied from an outlet of the secondary energy saver is led to the double-tube heat exchanger of the pressure regulating station, and returns to the primary energy saver after heat exchange to replace a water bath furnace to heat natural gas, so that the heating effect is guaranteed, gas is saved, and the water temperature of an inlet of the primary energy saver is reduced. When the gas turbine runs, one path of feed water is led to the double-tube heat exchanger from the low-pressure feed water secondary heater, and the feed water returns to the condenser after heat exchange, so that the gas consumption of the water bath furnace in low-temperature climate is saved, and more smoke exhaust waste heat is utilized in other climate. The two modes both can reduce the exhaust gas temperature, and are efficient in utilization, energy-saving, emission-reducing, green and environment-friendly.

A tank of a gas supply system is configured to be detachably attached to a gas consumption device. A control device is configured to, when the tank is detached, close an open / close valve to stop supply of gas from the tank, stop consumption of gas by the gas consumption device after the gas in the supply channel is consumed, and perform computation to permit detachment of the tank after confirming that pressure acquired from a pressure sensor is not rising to a predetermined level or higher.

The application relates to a full-automatic zero-gas consumption drain valve and relates to the technical field of drain valves, which comprises a support, the inside of the support is fixedly connected with a glass fiber pipe, the inside of the support is fixedly connected with an aluminum square pipe, the outside of the aluminum square pipe is provided with a drainage mechanism, the inner wall of the support is provided with a connecting mechanism, one side of the inside of the support is fixedly connected with a water inlet block, one side of the outside of the support is provided with a centrifugal separation mechanism, the drainage mechanism comprises a limiting bolt, the outside of the limiting bolt is threadedly connected at the top of the aluminum square pipe, and the outside of the limiting bolt is fixedly connected with a floating ball plate. The application realizes efficient separation and automatic drainage by automatically controlling the opening and closing of a drainage channel according to the condensate liquid level through the linkage mechanism of the floating ball plate and a valve ball, does not need an additional gas source for driving, reduces operation cost, and improves stability and reliability.

The invention relates to the technical field of engine oil injection control, in particular to an engine oil injection control method and system based on an LSTM and a PID controller. The method comprises the steps that engine operation parameters of all time steps before the t moment are obtained; inputting the engine operation parameters into a trained air-fuel ratio prediction model to obtain an air-fuel ratio prediction value at the t moment; determining an air-fuel ratio error according to the air-fuel ratio predicted value at the t-th moment and the air-fuel ratio theoretical value at the current moment; inputting the air-fuel ratio error into a PID (Proportion Integration Differentiation) controller to obtain an oil injection difference control signal; according to the fuel injection difference control signal and the air-fuel ratio prediction value, the fuel injection quantity adjustment value at the t moment is determined; and the fuel injection pulse width at the t moment is determined according to the fuel injection quantity adjustment value. According to the method, LSTM and classic PID control are combined, the deviation of the air-fuel ratio is effectively restrained under the transient working condition, it is ensured that the engine always operates in the optimal air-fuel ratio interval, and therefore gas consumption is reduced, and emission of harmful gas is reduced.

The utility model relates to the technical field of industrial production equipment, in particular to a long-distance moving air floatation guide rail system. The long-distance moving air floating guide rail system comprises a sliding block installed on a guide rail, the guide rail is provided with a plurality of air channels and air paths connected with an air supply pipeline, a set of air outlet holes are formed in the portion, corresponding to each air path, between the guide rail and the sliding block and connected with the air paths, and air flows out of the air outlet holes to form an air film; the top end of the air throttle is fixed to the side wall of the guide rail, the inner wall of the sliding block makes contact with the top end of the air throttle and presses downwards to open the air throttle, and the air throttle automatically rebounds and is closed after the sliding block leaves. According to the long-distance moving air floating guide rail system, the normally-closed air throttle is used for controlling opening and closing of the air channel, the air throttle is extruded to be opened through movement of the sliding block, the air throttle can be opened and closed at any time according to movement of the sliding block, the air consumption is reduced, meanwhile, the influence of delay of an induction equipment control system is avoided, extra wiring work is not needed, and cost is reduced. The structure is simple and the installation workload is small.

The utility model relates to an automatic flue gas removing abdominal machine, which is characterized in that a main body is a pneumoperitoneum machine for establishing and maintaining pneumoperitoneum; the pneumoperitoneum machine comprises an air inlet channel, and the two ends of the air inlet channel are connected with an air source and an abdominal cavity respectively. One end of the exhaust channel is communicated with the abdominal cavity, and a smoke removal pump and an electromagnetic valve are sequentially arranged in the airflow flowing direction; the micro-control unit is provided with a digital communication interface used for being connected with an endoscope camera system; wherein a branch pipe communicated with the exhaust passage is arranged at the air inlet end of the smoke removal pump, the other end of the branch pipe is communicated with the exhaust passage at the air outlet end of the smoke removal pump, and a speed regulating proportional valve is arranged on the branch pipe; and the micro-control unit is connected with the speed regulation proportional valve, the smoke removal pump and the electromagnetic valve. The smoke exhaust device has the advantages that the smoke exhaust device can adjust the size of smoke, adjust the gas displacement, ensure that the smoke is removed to the maximum extent with the minimum gas consumption, reduce the consumption of carbon dioxide gas and reduce the consumption cost of medical consumables.

The invention discloses a gas-steam combined cycle system with bypass waste heat recovery and a control method thereof. The gas-steam combined cycle system comprises a gas turbine, a waste heat boiler, a steam turbine (comprising a high-pressure cylinder, an intermediate-pressure cylinder and a low-pressure cylinder) and a condenser, and is additionally provided with a bypass waste heat recovery device. The device is formed by sequentially connecting a low-pressure bypass cooler, a medium-pressure bypass cooler, an ejector, a gas-liquid separator, a gas compressor and a waste heat recovery heat exchanger, the heat absorption sides of the coolers are connected in parallel and then communicated with an inlet of the ejector, and a gas-phase working medium separated by the gas-liquid separator is pressurized by the gas compressor and then enters the waste heat recovery heat exchanger to release heat; the liquid-phase working medium returns to the cooler to form circulation, and the waste heat recovery heat exchanger and the energy accumulator are coupled to store heat. The bypass steam heat is efficiently recovered and stored in the energy accumulator in the start-stop stage of the unit, so that the gas consumption of the unit is remarkably reduced, and the comprehensive utilization efficiency of energy is improved.

The present invention relates to the technical field of medical gas equipment, and in particular to a method and system for regulating the operating pressure of medical gas equipment. The method comprises: dividing a day into a number of regulation cycles T; obtaining the rated gas production Q of the air compressor within the regulation cycle T, the terminal predicted total gas consumption (a%*Q), the gas storage tank volume V, the air compressor exhaust pressure P0, and the air compressor exhaust and gas storage tank gas temperature coefficient K, and establishing the start-stop number n and the minimum operating pressure P min and the maximum operating pressure P max Establish the objective function MinW and use the optimization algorithm to obtain the optimal value of the objective function MinW P min and P max , set the operating pressure range of the air storage tank within the current adjustment period T. The beneficial technical effects of the present invention include: reducing the operating energy consumption of the air compressor and saving energy by selecting a reasonable and effective operating mode.

The utility model discloses an automatic nitrogen control device. The gas inlet end of the electromagnetic valve is connected to a nitrogen conveying pipeline, and the gas outlet end of the electromagnetic valve is connected to a high-low temperature circulating box through a connecting pipeline; nitrogen is conveyed to the high-low temperature circulating box through the electromagnetic valve; the flow of nitrogen conveyed to the high-low temperature circulating box in the connecting pipeline is measured through a flow meter arranged on the connecting pipeline; the input end of the automatic control loop is electrically connected with a trigger circuit of the high and low temperature circulation box, and the automatic control loop is synchronously powered on / off when the trigger circuit is powered on / off; the automatic control loop is used for controlling opening and closing of the electromagnetic valve and controlling the alarm to give an alarm based on the measurement result of the flowmeter. According to the utility model, nitrogen can be automatically input into the high-low temperature circulation box when the high-low temperature circulation box runs, moisture is removed through the nitrogen under the condition that the five-time capacity is met, water spots on the surface of a chip are avoided, and nitrogen introduction is automatically cut off when the high-low temperature circulation box does not run, so that the gas consumption is saved.

The invention relates to the technical field of natural gas regulation and control, in particular to a natural gas long-distance pipeline supply-demand relation regulation and control method and device, and the method comprises the steps: building a multivariate parameter mathematical model between historical influence factor data and gas consumption data according to the obtained historical influence factor data and gas consumption data, namely a pipeline gas consumption prediction model; using the prediction model to predict the gas consumption of each user in the future predetermined time period; and if a deviation exists between the gas consumption prediction result in the predetermined time period and the gas consumption in the actual predetermined time period, determining a deviation index of the prediction result of the pipeline gas consumption prediction model, correcting the prediction result of the pipeline gas consumption prediction model according to the deviation index, and regulating and controlling the real-time gas supply according to the corrected prediction result. The problems that the working efficiency and the regulation and control precision are low, it cannot be guaranteed that all types of users are in the optimal supply and demand state, and safe and stable operation of the pipeline is not facilitated due to the fact that an existing natural gas long-distance pipeline is adjusted through manual experience during gas consumption regulation and control are solved.