314 results about "Gaseous detection device" patented technology

The invention relates to the technical field of microenvironment gas monitoring, in particular to a gas monitoring and early warning method for cultural relics in a corrosive microenvironment, which comprises the following steps: arranging a gas detection device in a cultural relic preservation area, the method comprises the following steps: covering a space in which a cultural relic is located to obtain gas related data in the space, and setting a data interval conforming to a storage standard on the basis; and the data transmission module is used for transmitting the screened gas related data acquired by the gas detection device to the data processing and analyzing unit. In the invention, through the four steps of arranging the gas detection device, transmitting data, analyzing and processing the data and starting the early warning module, the problem that the traditional cultural relic gas monitoring method mostly adopts a simple sensor to be combined with manual regular data checking is solved; as the gas concentration change cannot be comprehensively mastered in real time and an intelligent analysis, judgment and early warning mechanism is lacked, the corrosion risk of the cultural relics is difficult to control.

The utility model relates to a high-voltage cable buffer layer ablation characteristic gas detection device which comprises a gas acquisition unit, a gas detection unit, a data processing unit and an alarm unit, the gas collection unit comprises a circulating pump, a vacuum pump, a sampling gas cylinder, a pressure sensor and a plurality of valves, the gas detection unit comprises two detection modules, the gas inlet pipe is connected with a first electromagnetic valve, then is connected with the sampling gas cylinder and is connected with the circulating pump through a second electromagnetic valve, and the circulating pump is connected with the two detection modules through an electromagnetic three-way switching valve. An outlet of the sampling gas cylinder is connected with a third electromagnetic valve, then connected with an inlet of a vacuum pump, connected with a fourth electromagnetic valve and then connected with two detection modules at the same time; the first detection module is composed of a gas concentration sensor, a temperature sensor and a humidity sensor, and the second detection module is a gas sensor array. The device can perform field detection on gas generated in the ablation process of the buffer layer of the high-voltage cable, so that potential faults of the cable can be found and early warned in time.

The present disclosure relates to a gas detection device and a gas detection method which are capable of detecting N target gases in a gas sample. The gas sample is fed into a measuring chamber. M detectors each generate a signal which correlates to the concentration of at least one of the N target gases to be detected in the gas sample. A determiner comprises M inputs and N outputs. A signal, which depends on the signal of the associated measuring detector, is applied at each input of the determiner. Each output supplies information on the concentrations of the associated target gas. The determiner is trained by applying a learning method to a sample with a plurality of sampling elements. Each sample element contains M values for M signals from measuring detectors and N values of N target gas concentrations.

This invention relates to the field of gas detection technology, and more particularly to a gas detection device based on photoacoustic spectroscopy. The device comprises a laser emitting component, a first photoacoustic cell, an acoustic signal detection component, a signal amplification component, a phase detection component, and a visible light emitting component. The output end of the laser emitting component is aligned with the incident end of the first photoacoustic cell. The acoustic signal detection component is housed within the first photoacoustic cell, and its output end is connected to the input end of the signal amplification component. The output end of the signal amplification component is connected to the input end of the phase detection component. The output end of the phase detection component is connected to the laser emitting component. The visible light emitting component emits visible light towards the exit end of the first photoacoustic cell. The visible light passes through the first photoacoustic cell and propagates towards the laser emitting component, forming a calibration optical path. By adjusting the positions of the laser emitting component and the first photoacoustic cell according to the calibration optical path, the calibration of the detection optical path is achieved.

A system for cleaning, zeroing, and preventing air pollution in indoor space includes several gas detection devices, a central control monitoring device, and several gas exchange and filtration devices. The gas detection devices detect and output indoor and outdoor air pollution data. The central control monitoring device receives the outdoor and indoor air pollution data to perform an intelligent computation and comparison, locate an air pollution location in the indoor space, and transmit a control command intelligently. Each of the gas exchange and filtration devices is combined with a smart switch for the control command to control the gas exchange and filtration devices to be enabled, so that the air pollution is filtered and exchanged by the gas exchange and filtration devices, thereby allowing the indoor air pollution data detected by the gas detection devices in the indoor space to be a safety detection value.

The application provides a gas sampling joint and a gas detection device, the joint comprising a sampling unit, an air inlet unit and an air outlet unit; a pressure relief hole is arranged on the sampling unit; the air inlet unit is communicated to the bottom of the sampling unit; and the air outlet unit is communicated to the top of the sampling unit. The device comprises the joint as described above. The beneficial effects of the application include: effectively solving the problem of sampling port pressure change caused by the mismatch between the gas source gas volume and the sampling volume when the gas detection equipment is sampling or correcting, avoiding the sensitivity change caused by the change of the gas pressure in the gas circuit of the detection equipment, and helping to improve the stability and accuracy of the gas detection result. Meanwhile, the whole joint design is simple in structure, convenient to use, and can achieve good use effect.

The utility model particularly relates to a high-efficiency steam quality detection device which comprises a dryness and superheat degree detection device assembly, an air-cooled condensing device assembly and a non-condensable gas detection device assembly, the dryness and superheat degree detection device assembly comprises a steam guide four-way pipeline, a first pressure transmitter, a drain valve, a measurement four-way pipeline, a second pressure transmitter and a temperature sensor, and the air cooling condensation device assembly comprises an efficient condenser and an efficient cooling fan. The non-condensable gas detection device assembly comprises an air burette, a first electromagnetic valve, a first pressure differential sensor, a second pressure differential sensor, a condensate water burette and a second electromagnetic valve. The steam quality detection device has the advantages of high precision, high efficiency, high automation degree, capability of completely meeting the requirements of EN285 regulations on steam quality detection and the like.

The application provides a rock drilling hydraulic control system and engineering equipment, and relates to the technical field of engineering equipment.The rock drilling hydraulic control system comprises an actuator, a power mechanism connected with the actuator through an oil pipeline and used for providing power for the actuator, a control valve group arranged on the oil pipeline and used for controlling the conduction of the oil pipeline, a gas detection device arranged in the actuator and used for detecting the content of protective gas in the actuator, and a control device connected with the control valve group and the gas detection device respectively and used for controlling the working state of the control valve group according to the detection result of the gas detection device.The rock drilling hydraulic control system provided by the application can avoid the situation that the actuator works without protective gas, and improves the service life of the equipment.

The present application relates to a gas detection device for an electrolysis cell test device and an electrolysis cell test device.The electrolysis cell test apparatus comprises the following: an electrolysis cell for receiving an electrolyte medium and for carrying out an electrolytic reaction, which has an outlet for discharging an electrolysis product; and a gas discharge line, one end of which is connected to the outlet of the electrolysis cell and which is provided with a gas pretreatment device; wherein the gas detection device comprises a gas sampling and analysis line, one end of which is connected to the outlet of the electrolysis cell, and wherein a sample gas treatment module and a gas analyzer are arranged successively along the flow direction of the electrolysis product, wherein the sample gas treatment module performs cooling and gas-liquid separation of the electrolysis product, while the gas analyzer analyzes the gas discharged from the sample gas treatment module.The gas detection device of the present application reduces the time between gas generation in the electrolysis cell and gas detection and improves the safety of the electrolysis cell test device.

The utility model discloses a gas detection device of a coal milling system for a blast furnace. The coal milling system comprises a coal mill and a powder collector, and a discharge port of the coal mill is communicated with an air inlet pipeline of the powder collector; comprising a first metallurgical process analysis system, a second metallurgical process analysis system, a first collection pump, a second collection pump, a first collection probe and a second collection probe, a feeding pipe is arranged on a feeding hole of the coal mill; the side wall of the feeding pipe is communicated with a sampling branch pipe; the first acquisition probe is accommodated in the sampling branch pipe. The device can improve the accuracy of the detection result of the content of CO and O2 in the environment in the coal mill and the powder collector.

The application discloses a kind of quick detection device of gas content in transformer oil, it is related to the technical field of power transformer;Quick detection device of gas content in transformer oil includes first air pump, second air pump, gas separation structure, booster oil pump, circulation structure and gas detection device;First air pump forms negative pressure environment above the oil surface in heating inner bag, and carries out atomization spray to oil by circulation structure, can be fully released from dissolved gas in oil, greatly speeds up the gas release speed in oil liquid;After enrichment by pressurization, the gas concentration of the gas after release is improved, to avoid the detection deviation caused by too low gas concentration even missed detection;The application also designs laser detection structure based on photoacoustic effect and heat cleaning structure for removing residual water vapor;The device provided by the application shortens the overall time consumption of gas release and detection in transformer oil, and guarantees the accuracy of oil release gas detection.

The application relates to the technical field of insulating gas detection, and discloses an insulating gas detection device for electrical equipment, which solves the problem that it is difficult to quickly extract the gas in high-voltage electrical equipment for detection, and comprises high-voltage electrical equipment, the outer side of the high-voltage electrical equipment is provided with an optical measuring device, the top of the optical measuring device is connected with a laser, the bottom of the optical measuring device is connected with a detector, and the outer side of the high-voltage electrical equipment is provided with a data processor; the cooperation between the connecting pipe two, the side plate, the through groove and the abutting column facilitates the side plate to be sleeved outside the two positioning columns, the cooperation between the side column, the ball one and the inner plate facilitates the inner ring to slide along the two inner rods under the action of the elastic force of the two spring one, then the side plate can be limited, the connecting pipe two and the connecting pipe one can be quickly connected and fixed, and then the gas in the high-voltage electrical equipment can be quickly extracted into the optical measuring device for detection.

The utility model relates to a gas detection device which comprises a light-emitting part, a calibration gas chamber, a detection gas chamber, a photoelectric detection assembly and a wavelength calibration assembly capable of adjusting the wavelength of light emitted by the light-emitting part, and the photoelectric detection assembly comprises a first detection part capable of receiving the light emitted by the light-emitting part. The calibration gas chamber and the detection gas chamber are both located on a light path of light emitted by the light emitting part. The gas detection device provided by the utility model solves the problem that the existing gas detection equipment is relatively high in maintenance cost.

This invention discloses a gas detection device for the excavation chamber of a tunnel boring machine (TBM), relating to the field of gas detection technology for TBM excavation chambers. It includes a TBM body and an excavation chamber partition. A gas detection mechanism is fixedly connected to the partition. This gas detection device draws in gas through a suction system via a first flexible hose, a first connecting pipe, a transmission box, a transmission pipe, and an intake pipe. A filter screen in the intake frame first filters dust. The transmission mechanism drives the transmission pipe and the intake frame to rotate, achieving a wide-range suction and expanding the detection range. The filtered gas enters the gas detector for real-time detection, reducing detection delay and saving time for safe operation, thus improving production safety. Furthermore, the drive mechanism rotates the mounting box 90° periodically, alternating the intake air intake and further ensuring comprehensive detection. Simultaneously, the filter screen filters dust, reducing its impact on the gas detector and improving detection stability.

A kind of gas detection device based on environmental parameter compensation algorithm, including processor, sensor detection module, communication module and compensation correction module;Sensor detection module includes temperature and humidity sensor, gas detection sensor and wind speed sensor respectively connected with processor, the temperature, humidity value corresponding to each state point is saved in processor;When the device starts to carry out gas concentration detection, processor automatically obtains the initial value of gas concentration, temperature value and wind speed value corresponding to the same time point and calculates temperature compensation value and wind speed compensation value;After the initial value of gas concentration, temperature value and wind speed value obtained by processor, compensation correction operation is carried out to gas concentration data according to compensation algorithm;Finally, error correction is carried out again.The gas detection parameter value is compensated and corrected by temperature compensation and wind speed compensation in the application, and the gas concentration value can be compensated;So the data of gas detection can be closer to real value, and the accuracy of device under different environments is improved.

The invention discloses a fire and gas detection alarm device which comprises a first shell, a controller and a first power module are arranged in the first shell, the first power module is mechanically connected with one end of a movable seat, the other end of the movable seat penetrates through the first shell and then is fixedly connected with a first gas detection device, and one side of the first shell is hinged to one end of a movable connecting shaft. The other end of the movable connecting shaft is mechanically connected with a fire and gas detection device, the first shell is further provided with an electrical interface and a first audible and visual alarm, and the controller is electrically connected with the first power module, the first gas detection device, the fire and gas detection device and the first audible and visual alarm. Combustible gas, toxic gas and fire can be detected at the same time, the arrangement number of detectors is reduced, multidirectional inspection is achieved, the gas detection device achieves detection of different component gases by emitting lasers with different wavelengths, high sensitivity and long-distance measurement are achieved, and the gas detection device is not affected by environment humidity.

This application provides a wind velocity measurement apparatus for an aircraft. The wind velocity measurement apparatus for an aircraft includes an aircraft attitude obtaining apparatus, an ultrasonic or laser wind measurement apparatus, an attitude adjustment apparatus, an aircraft parameter obtaining apparatus, and a control apparatus. The ultrasonic or laser wind measurement apparatus is configured to measure a relative wind angle. The aircraft parameter obtaining apparatus is configured to obtain a ground velocity and a set course angle of an aircraft. The control apparatus is capable of adjusting, based on an attitude of the aircraft, an attitude of the ultrasonic or laser wind measurement apparatus via the attitude adjustment apparatus until a transmit end and a receive end of the ultrasonic or laser wind measurement apparatus are both kept horizontal. This application further provides a corresponding wind velocity measuring method for an aircraft, and a greenhouse gas detection apparatus.

The utility model relates to the technical field of gas detection devices, in particular to a flammable and explosive gas detection device with a cleaning function, which comprises a detector body, a gas inlet pipe is arranged at the top of the detector body, and a connecting frame is fixedly mounted on the outer wall of the gas inlet pipe. An external pipe is fixedly installed at the end, away from the air inlet pipe, of the connecting frame and located over the air inlet pipe, and symmetrically-distributed fixing holes are formed in one side of the connecting frame. According to the flammable and explosive gas detection device with the cleaning function, through cooperative use of the detector body, the gas inlet pipe, the external pipe, the filter pipe, the brush, the cleaning plate, the connecting frame, the first spring, the pressing plate, the push rod, the fixing hole and the filter screen, the filter pipe is constructed into an assembly unit which is independent and movable relative to the gas inlet pipe and the external pipe. And the cleaning process of the filter screen is simplified. When the filter screen needs to be cleaned, a user only needs to slightly press the pressing plate, and the position of the filter pipe can be easily changed.

A biological information measurement system according to an embodiment of the present invention comprises: a gas detection device provided with: a first gas sensor that reacts with hydrogen gas; and a second gas sensor that reacts with the odorous gas and the hydrogen gas; a control device for controlling the gas detection device; the control device is configured to calculate a first calculation value corresponding to hydrogen gas based on a detection result of the first gas sensor, calculate a second calculation value corresponding to hydrogen gas of the second gas sensor based on the first calculation value, and output the first calculation value and the second calculation value. A third calculation value corresponding to the odor gas is calculated based on the detection result of the second gas sensor and the second calculation value, and when at least one of the first calculation value, the second calculation value, and the third calculation value satisfies a predetermined condition, the odor gas is detected. The control device performs control to change the health state of the user or the information relating to the health state output by the output means so as not to be based on the third calculation value.

The application relates to a gas detection device and a gas concentration detection method. The gas detection device comprises a micro-detection chamber, a power source, an air outlet, a gas diffusion resistance element, and a working electrode. The volume of the micro-detection chamber is fixed, and the micro-detection chamber is provided with an air inlet. The power source is connected with the micro-detection chamber. The air outlet is connected with the power source. The gas diffusion resistance element is arranged in the micro-detection chamber. The working electrode is connected with the gas diffusion resistance element, and the working electrode is provided with a catalytic material. The working electrode is used for detecting a response value of a to-be-detected gas concentration and / or consuming the to-be-detected gas. The gas detection device has a small volume and a simple structural design. When the gas concentration is detected, a small amount of gas is required. According to specific experimental requirements, the gas detection device with different structural features can be used for measuring a single gas concentration or a mixed gas concentration.

The invention belongs to the technical field of gas detection, and particularly relates to a harmful gas detection device for a gas pipe gallery of a high-rise building. Comprising a pipe gallery inner wall and a gas sensor. A retention loading and unloading module is arranged on the inner wall of the pipe gallery; the retention loading and unloading module comprises a transverse sliding rail located on the inner wall of the pipe gallery. A retention rectangular block is arranged on the side, close to the inner wall of the pipe gallery, of the transverse sliding rail. The retention rectangular groove is formed in the inner wall of the pipe gallery; when the retention rectangular grooves and the retention rectangular blocks are in contact, the transverse sliding rails are attached to the inner wall of the pipe gallery; the transverse slide rail is provided with a frequency motion position control device; the frequency motion position control device comprises a transverse sliding block which is installed on the transverse sliding rail. Therefore, the gas sensor can detect gas at different positions and heights in the pipe gallery, the detection accuracy of the device is prevented from being influenced by dead angles in detection, the detection requirements of different positions and heights are met, weak detection data support caused by insufficient sample size is avoided, and the detection limitation of the device is reduced while the detection accuracy is improved.

The application provides a wharf pipe trench gas detection device, and relates to the technical field of gas detection, which comprises a gas detector and a gas collection assembly. The gas collection assembly comprises a gas collection box. A collection gas pump is installed on the left side of the inner cavity of the gas collection box. The output end of the collection gas pump is connected with the gas detector through a gas conveying pipe. A gas suction pipe is installed on the gas suction hole of the collection gas pump. The tail end of the gas suction pipe is connected with a gas collection pipe through a rotary joint. A winding assembly is installed on the inner side of the middle part of the gas collection box. The winding assembly comprises a support frame. A winding wheel is movably installed on the inner side of the middle part of the support frame. The gas collection pipe is wound or unwound by the winding assembly. The inlet end of the gas collection pipe can be lowered to the bottom of the pipe trench and close to the water surface. Therefore, the gas detector can directly collect and detect the gas close to the water surface at the bottom of the pipe trench. The accuracy of the detection work of the pipe trench gas is effectively improved.

The utility model relates to the technical field of gas detection, in particular to an industrial gas detection device. According to the technical scheme, the device comprises a device base, a detection box is fixed to the upper end of the device base, a cover plate is fixed to the front end of the detection box through locking screws, a controller is installed on the rear side of the detection box, a detection air channel is formed in the detection box, detection air pipes are installed on the rear side of the upper end of the detection air channel, and the detection air pipes are linearly distributed; an electrochemical sensor, an infrared sensor and a semiconductor sensor which are used for detecting different gases are respectively mounted in the detection box, and the upper ends of the detection gas pipes extend out of the detection box. By means of sliding of the sliding block, gas can be guided into the detection gas pipe provided with the corresponding sensor for gas detection, special detection can be conducted on different kinds of gas, the detection accuracy is improved, before detection, gas in the detection gas channel can be emptied, the influence of residual gas on a detection structure is reduced, and the detection efficiency is improved. The detection accuracy is improved.

The utility model discloses a TDLAS (tunable diode laser absorption spectroscopy) technology-based multi-gas detection device. The device comprises a plurality of paths of lasers with different wavelengths, a laser coupling device, a multi-reflection gas chamber, a detector and a data processing module, the device modulates a plurality of lasers with different wavelengths at different frequencies, then light emitted by the different lasers is coupled and then enters a multi-reflection gas chamber to react with detected gas, the output light passes through a detector, and a signal generated by the detector is demodulated by adopting a demodulation frequency which is the same as the modulation frequency. And the concentrations of different gas components are extracted. According to the device, various gas components can be analyzed under the condition that only one gas chamber and one detector are used, the size and the weight of gas analysis equipment are effectively reduced, and the manufacturing cost is reduced.

The utility model discloses a combustible gas detection device and relates to the technical field of detection devices. The device comprises a detector, the rear side of the detector is fixedly connected with a rectangular protective shell, and the device further comprises an adjusting part which is installed on the detector; the self-locking part is arranged in the rectangular protective shell; the adjusting part comprises an adjusting assembly, and the adjusting assembly is arranged on the detector; the guide assembly is mounted in the rectangular protective shell; the adjusting assembly comprises two hinge rods arranged in the rectangular protective shell, and a hinge shaft penetrates through the two hinge rods. By arranging the adjusting part, the gas detection device solves the problems that when an existing gas detection device is used, the distance between holding plates is inconvenient to adjust, the gas detection device is difficult to adapt to the size difference of palms of a plurality of persons, the universality and the comfort degree of equipment holding are reduced, the hand fatigue of workers due to long-time holding is increased, and the working efficiency is improved. And the efficiency and the accuracy of the detection work are influenced.

The application discloses a switchable gas detection device and method for a gas-liquid two-phase flow pipeline, which comprises a main pipeline, a container, a first baffle plate, a first bypass pipeline, a second bypass pipeline, a first valve, a second valve, a flowmeter and a water supplement valve. The container is divided into a first cavity and a second cavity by the first baffle plate, and a gap is left between the first baffle plate and the inner bottom wall of the container. The main pipeline is connected with the first cavity through the first bypass pipeline, and the second cavity is connected with the main pipeline through the second bypass pipeline. The first valve is arranged on the first bypass pipeline, the second valve and the flowmeter are arranged on the second bypass pipeline, and the water supplement valve is arranged on the top of the container and connected with the container. The application realizes the natural separation of gas and fluid based on the density difference between gas and liquid, does not need to additionally configure a separation device, has the advantages of simple structure and low cost, can analyze the composition of the separated gas, and can directly record the volume of the gas and the volume of the fluid in unit time after separation. The volume of the gas is divided by the volume of the fluid, so that the proportion of the gas can be calculated.

The application discloses a kind of confined space operation safety real-time monitoring and intelligent management system, comprising: confined space entrance integrated box, confined space field operation integrated box, intelligent safety helmet and safety control center, touch screen industrial computer is integrated in confined space entrance integrated box, first camera, first sound-light alarm and first microphone;Confined space field operation integrated box is integrated with second camera, gas detection device, one-key alarm device and second sound-light alarm;Intelligent safety helmet is fixedly provided with third camera;Safety control center is used for centralized monitoring, intelligent early warning, process management, equipment control, data traceability and AI violation identification to confined space operation.The confined space operation safety real-time monitoring and intelligent management system provided in the application eliminates monitoring blind area, realizes the automatic linkage of alarm and voice communication, and supports on-site rapid deployment and relocation.

The utility model discloses installation mechanism and gas detection device, installation mechanism is applicable to gas probe, and installation mechanism includes: seat body, seat body is used for fixing on external spare part, bearing piece, bearing piece is fixed in seat body height direction one side, and bearing piece is the hollow structure of two ends opening, extension piece, extension piece passes through bearing piece and can be limited on bearing piece, and extension piece is telescopic structure, installation piece, installation piece is fixed in extension piece and is away from bearing piece one end, and installation piece is used for installing gas probe, detection pipeline and gas detection interface, one end of detection pipeline is used for connecting with the gas outlet of gas probe, and the other end of detection pipeline is connected with gas detection interface. The utility model has realized the safe and reliable maintenance mode to the gas probe outside the bank, has effectively avoided the safety risk of maintenance personnel because of climbing, has improved work efficiency. And, detection pipeline and gas detection interface provide convenient passage for detecting gas, and it is convenient for maintenance test operation.

The application provides a gas detection device which can improve the accuracy of gas detection. The gas detection device comprises a first detection unit, the first detection unit comprises a first shell and a first detection element, the first shell has a shell inner cavity, and the first detection element is located in the shell inner cavity; a wall portion of the first shell is provided with a first through hole penetrating through the wall portion; the first detection unit further comprises a blocking portion, the blocking portion is connected with the wall portion of the first shell, the blocking portion and the first through hole have a spacing in the depth direction of the first through hole; at least part of the projection of the blocking portion covers the first through hole or the orthographic projection of the first detection element in the depth direction of the first through hole.