15 results about "Oxygen Content Measurement" patented technology

The utility model provides an oxygen injection control system based on dynamic environment variable compensation, and aims to solve the non-linear problem of oxygen content control under environment variable disturbance. Comprising a main oxygen spraying pipeline, an oxygen supplementing pipeline connected with the main oxygen spraying pipeline in parallel, a PLC (Programmable Logic Controller) and a PID (Proportion Integration Differentiation) controller which are respectively connected with the main oxygen spraying pipeline and the oxygen supplementing pipeline and are used for controlling the main oxygen spraying pipeline and the oxygen supplementing pipeline, and an oxygen content measuring pipeline which is in communication connection with the PID controller, the oxygen control system selectively controls the main oxygen spraying pipeline and / or the oxygen supplementing pipeline to be opened or closed.

A method includes measuring baseline heart sounds using an ambulatory heart sound monitor, measuring baseline blood oxygen content using an ambulatory optical monitor, measuring new heart sounds, measuring new blood oxygen content, determining a relative increase in the new heart sounds compared to the baseline heart sounds, determining a relative decrease in the new blood oxygen content compared to the baseline blood oxygen content, and generating an alert in response to a combination of both the relative increase and the relative decrease.

This invention discloses a deep learning-based adaptive compensation method for temperature and pressure in an electrochemical oxygen sensor, relating to the field of oxygen content detection technology. The method includes the following steps: constructing a sealed test space and simultaneously conducting random oxygen content tests within the sealed test space, recording the oxygen content test data; analyzing the temperature offset relationship between the ambient temperature and the sensor temperature based on the oxygen content test data; analyzing the pressure offset relationship between the ambient pressure and the sensor temperature based on the oxygen content test data; analyzing the primary and secondary offset relationships based on the temperature and pressure offset relationships; and adaptively compensating the sensor temperature based on the primary and secondary offset relationships. This invention addresses the problem that existing oxygen content detection technologies using electrochemical oxygen sensors cannot eliminate reading deviations under different temperature and pressure environments, resulting in inaccurate oxygen content measurements.

A regolith oxygen extraction system that extracts oxygen and produces molten regolith by processing and heating a continuous regolith feed. The system feeds regolith through a vertical hopper to a reaction chamber, the regolith itself sealing the inlet to the reaction chamber while maintaining continuous flow. The heated regolith reacts within the reaction chamber to produce oxygen and processed regolith. The processed regolith is removed from the reactor chamber through an extrusion nozzle, the processed regolith itself sealing the produced gases within the reactor chamber while maintaining continuous flow of processed regolith. The system employs non-contact reaction temperature measurement and rapid oxygen content measurement in the regolith upstream and downstream of the reaction zone, and may be integrated with multiple oxygen extraction methods.

The utility model provides a multi-channel temperature control synchronous closed-loop fluid system oxygen content real-time detection device, which can complete oxygen content test in a dry air or oxygen injection process, and the detection environment fits the oxygen environment in a closed-loop fluid system experiment as much as possible, so that the test error is reduced, and the test efficiency is improved. Comprising an oxygen content detection rake, a heat tracing band, a stop valve, a pressure reducing valve, a bypass stop valve, an oxygen content measuring instrument and a temperature controller which are sequentially connected, the oxygen content detection rake goes deep into an oxygen injection rake, and the insertion direction of the oxygen content detection rake is perpendicular to the oxygen injection direction; a plurality of detection pipelines are arranged in the oxygen content detection rake, each detection pipeline is connected to a stop valve after being restrained by a heat tracing band, the plurality of detection pipelines are connected to a pressure reducing valve and a bypass stop valve after being converged, the output ends of the pressure reducing valve and the bypass stop valve are connected to an oxygen content measuring instrument, and the heat tracing band is provided with a temperature sensor. The temperature sensor is in communication connection with the temperature controller and transmits the real-time temperature of the heat tracing band to the temperature controller.

The invention discloses a zirconia sensor oxygen content measurement self-correction method and system. The method comprises the following steps: respectively conveying high standard gas and low standard gas into a zirconium oxide sensor, reading an output current value and a current actual temperature after the output current value is stable, and if the current actual temperature does not meet a preset threshold value, performing temperature compensation to obtain a corrected current value; obtaining a range correction coefficient through the actual concentration and the correction current value of the high standard gas; a zero point correction coefficient is obtained through the actual concentration of the low standard gas, the correction current value and the range correction coefficient; judging the accuracy of the range correction coefficient and the zero point correction coefficient, if not accurate, not updating the system, continuing to use the last effective coefficient and re-calibrating; if so, storing the range correction coefficient and the zero point correction coefficient, and calculating the real-time oxygen content; by calibrating time, a range correction coefficient and a zero correction coefficient and calibrating whether the health index of the zirconium oxide sensor is calculated, an alarm is given when the health index is smaller than a preset value.

The utility model discloses a feeler lever type flue gas humidity and oxygen content measuring device. The feeler lever type flue gas humidity and oxygen content measuring device comprises a main body unit and a measuring unit, the main body unit comprises an instrument host, the instrument host is connected with a probe rod, the probe rod is provided with a mounting flange and a one-way valve, the mounting flange is used for being connected with a flue, and the one-way valve is used for introducing standard gas for sensor measurement; and the measuring unit is arranged at the end part of the probe rod and is connected with the instrument host through a wire, so that the measuring unit transmits measured data through the wire, the data is processed and analyzed through the instrument host, and the real-time measured data is displayed on a display part of the instrument host. According to the utility model, the humidity sensor is additionally arranged on the device, so that the oxygen content and the humidity in the flue gas are measured separately, and the measurement accuracy is improved; moreover, the humidity sensor and the oxygen sensor are integrated in the same measuring unit, so that the installation steps are simplified, and the maintenance cost is reduced; meanwhile, the sensor is connected with the instrument host through a wire, so that real-time data transmission and processing are realized.

The application belongs to the technical field of electrochemical measurement, and discloses a pressure self-balancing deoxygenation working condition electrochemical measurement device and method, which comprises a differential pressure transmitter, a PLC liquid level controller, an oxygen content measuring instrument, a first measurement pool, a second measurement pool, an oxygen content measurement pool and a water seal pool; the first measurement pool, the second measurement pool, the oxygen content measurement pool and the water seal pool are sequentially communicated through deoxygenation pipelines; an auxiliary electrode and a working electrode are arranged in the first measurement pool; the second measurement pool is provided with a reference electrode; the auxiliary electrode, the working electrode and the reference electrode are electrically connected with an electrochemical workstation; a salt bridge is further arranged between the first measurement pool and the second measurement pool; the second measurement pool is arranged on a lifting device, and the second measurement pool and the first measurement pool form a height difference h. The application utilizes a control system to automatically control the liquid level difference balance of the measurement device to balance the pressure difference generated by the deoxygenation nitrogen gas flow, and the measurement accuracy is high.

A regolith oxygen extraction system that extracts oxygen and produces molten regolith by processing and heating a continuous regolith feed. The system feeds regolith through a vertical hopper to a reaction chamber, the regolith itself sealing the inlet to the reaction chamber while maintaining continuous flow. The heated regolith reacts within the reaction chamber to produce oxygen and processed regolith. The processed regolith is removed from the reactor chamber through an extrusion nozzle, the processed regolith itself sealing the produced gases within the reactor chamber while maintaining continuous flow of processed regolith. The system employs non-contact reaction temperature measurement and rapid oxygen content measurement in the regolith upstream and downstream of the reaction zone, and may be integrated with multiple oxygen extraction methods.

The application relates to the technical field of environmental protection monitoring of thermal power plants, in particular to a flue gas oxygen content measurement and air leakage prevention interference system and method for a thermal power plant and electronic equipment, wherein the system comprises: a dynamic variable-diameter system arranged in a chimney or a flue; a main oxygen content measurement unit arranged in a flue area and used for detecting the oxygen content value of flue gas; and a data processing and control unit, which is in communication connection with the dynamic variable-diameter system and the main oxygen content measurement unit, respectively, and is used for generating a caliber adjustment signal of the dynamic variable-diameter system based on a boiler load or a flue gas flow signal to adjust the caliber, and inputting the oxygen content value into a pre-pretrained correction model to output a corrected oxygen content value used for pollution conversion. Thus, the problems that in the related art, due to low efficiency of artificial searching and plugging of air leakage points, the flow field characteristics under low load cannot be fundamentally solved, the pollution conversion data deviates, and environmental protection pressure is brought to enterprises and the like are solved.

The present application provides a kind of oxygen content determination system and method, oxygen content determination system includes first electromagnetic valve, scroll pipe cooler and by determination pipeline sequentially connected sampling valve, water removal filter, coil cooler, dust removal filter, third electromagnetic valve, oxygen content analyzer, jet pump: the air inlet end of first electromagnetic valve is connected with air inlet pipeline, the sample gas measurement end of first electromagnetic valve is connected with the inlet end of jet pump, the air inlet end of scroll pipe cooler, the pipeline back flushing end of first electromagnetic valve is connected with third electromagnetic valve;The cold air outlet end of scroll pipe cooler is connected with the cold air inlet end of coil cooler;First electromagnetic valve and third electromagnetic valve are connected with time relay communication.The sample gas of the present application into oxygen content analyzer is dry, dust-free, non-corrosive gas, no ammonium salt, not only guarantee the stability and accuracy of determination value, but also make oxygen content analyzer can be used for long period to determine the oxygen content of tail gas in tail gas incinerator.

The invention relates to the technical field of thermal power plant environmental protection monitoring, in particular to a thermal power plant flue gas oxygen content measurement and air leakage interference prevention system and method and electronic equipment. The main oxygen quantity measuring unit is arranged in the flue area and is used for detecting the oxygen quantity value of the flue gas; the data processing and control unit is in communication connection with the dynamic reducing system and the main oxygen amount measuring unit, and the data processing and control unit is used for generating a caliber adjusting signal of the dynamic reducing system based on the boiler load or the flue gas flow signal so as to adjust the caliber. And inputting the oxygen quantity value into a pre-trained correction model so as to output a corrected oxygen quantity value for pollutant conversion. Therefore, the problems that in the related technology, due to the fact that the efficiency of manually searching and blocking the air leakage point is low, the flow field characteristic problem under the low load cannot be radically solved, pollutant conversion data deviates, and environmental protection pressure is brought to enterprises are solved.

The invention provides an oxygen content stable control system based on accompanying liquid nitrogen injection and a use method thereof, which ensure accurate control of oxygen content in closed-loop fluid system equipment, and comprises a gas source pretreatment assembly, an oxygen content control assembly and an oxygen content measurement assembly which are assembled on a continuous closed-loop fluid system, the gas source pretreatment assembly and the oxygen content control assembly are connected and assembled between the diffusion unit and the steering unit, and the oxygen content measurement assemblies are assembled on the front section and the rear section of the test cabin section; a feed-forward control pipeline of the oxygen content control assembly serves as a large-flow gas path in the oxygen injection process and receives a PLC feed-forward control instruction, and the feed-forward control instruction is combined with a correction equation through an ideal gas equation or the oxygen molecule demand quantity obtained through calculation of a simulation mode value; the feedback control pipeline serves as a small-flow gas path in the oxygen injection process and receives a PID feedback control instruction, and the feedback control instruction calculates the oxygen supplementing molecule demand quantity through real-time oxygen content data obtained through the oxygen content measuring assembly and liquid nitrogen real-time injection data.

A method includes measuring baseline heart sounds using an ambulatory heart sound monitor, measuring baseline blood oxygen content using an ambulatory optical monitor, measuring new heart sounds, measuring new blood oxygen content, determining a relative increase in the new heart sounds compared to the baseline heart sounds, determining a relative decrease in the new blood oxygen content compared to the baseline blood oxygen content, and generating an alert in response to a combination of both the relative increase and the relative decrease.

A regolith oxygen extraction system that extracts oxygen and produces molten regolith by processing and heating a continuous regolith feed. The system feeds regolith through a vertical hopper to a reaction chamber, the regolith itself sealing the inlet to the reaction chamber while maintaining continuous flow. The heated regolith reacts within the reaction chamber to produce oxygen and processed regolith. The processed regolith is removed from the reactor chamber through an extrusion nozzle, the processed regolith itself sealing the produced gases within the reactor chamber while maintaining continuous flow of processed regolith. The system employs non-contact reaction temperature measurement and rapid oxygen content measurement in the regolith upstream and downstream of the reaction zone, and may be integrated with multiple oxygen extraction methods.