1310 results about "Gas detector" patented technology

The invention discloses a vehicle-mounted laser gas pollution detection and prediction system, which comprises a mobile laser detection platform, a machine prediction system and a dynamic pollution map generation system, and is characterized in that the mobile laser detection platform is carried on a new energy vehicle and is integrated with a laser gas detector, a high-precision positioning module, an inertial navigation system and an environment sensor group; the machine prediction system receives real-time traffic flow data, weather forecast data and topographic data and outputs a pollution diffusion prediction result; the dynamic pollution map generation system comprises a space-time synchronization module, a data fusion module and a pollution event marking module. And the space-time synchronization module binds the gas pollution data with the positioning coordinates and the millisecond timestamp through hardware clock synchronization.

The invention discloses an automatic calibration method and system for a mining laser gas detector, and relates to the technical field of instrument calibration. The method comprises the following steps: dividing detection beam parameters into measurement beam parameters and reference beam parameters; enabling the measurement light beam parameter to penetrate through the to-be-measured gas area to obtain a measurement signal, and enabling the reference light beam parameter to penetrate through the reference gas chamber to obtain a reference signal; performing photoelectric conversion calculation on the reference signal to obtain a gas concentration detection value; the gas concentration detection value is compared and analyzed with a reference data value according to the central wavelength position of the mining laser gas detector, and a calibration unit is activated according to a comparison result; and automatically correcting the mining laser gas detector, generating a correction parameter set, calculating a measurement signal, and generating a concentration value of the gas to be detected. The technical problems of low calibration efficiency and unstable calibration precision of the mining laser gas detector in the prior art are solved, and the technical effects of realizing automatic calibration of the mining laser gas detector and improving the calibration efficiency and precision are achieved.

The invention provides an intelligent fire prevention and control fire-fighting management system and method for a lithium battery energy storage power station, and relates to the technical field of data processing, and the method comprises the steps: arranging a multi-level temperature sensor, a gas detector and a smoke detector in and outside a battery module, and collecting and forming multi-source monitoring data; performing time sequence rate analysis, and if a preset condition is met, generating early warning data; in combination with sensor matrix distribution in the battery module, spatial cross comparison is executed to obtain abnormal positioning data, and false anomalies are eliminated through multi-point consistency verification; generating a directional processing instruction corresponding to the injection unit, and setting injection data in the processing instruction; the spraying unit is controlled to release an atomized fire extinguishing medium, so that the medium forms a permeation flow field in the gaps of the battery cells, and treatment feedback data is acquired and formed; performing trend analysis, and if the trend is not enough to recover to the preset safety range, generating a secondary processing instruction; according to the invention, the autonomy and accuracy of fire control management are improved.

The invention discloses a gas detector for air pollution detection, and belongs to the technical field of gas detection.The gas detector comprises an outer shell and an inner shell which are arranged in a sleeved mode and used for detecting gas to be detected; the adjusting mechanism is used for adjusting the height and angle of the detection mechanism; wherein an inner air inlet cavity is formed in the inner shell, and an outer air inlet cavity is formed between the outer shell and the inner shell; a sensor is mounted on the inner wall of the inner air inlet cavity; an exhaust pipe communicated with the inner air inlet cavity is arranged on the outer shell, and a fan is mounted in the exhaust pipe; a rotating ring is rotationally arranged on the radial inner wall of the outer shell and used for adjusting the opening and closing states of the inner air inlet cavity, the outer air inlet cavity and the exhaust pipe. The inner gas inlet cavity is a core detection area, a sensor is installed to make direct contact with to-be-detected gas, and the outer gas inlet cavity is a split-flow filtering area and serves as a temporary storage area of follow-up impurities. The exhaust pipe is communicated with the inner air inlet cavity, the fan is arranged in the exhaust pipe, and the fan provides active air suction and exhaust power and supports reverse blowing and cleaning of residual impurities in the cavity.

The invention discloses a gas recognition and concentration detection method and system based on machine learning, and relates to the technical field of gas concentration detection.The method comprises the following steps that relevant data of a box body is obtained based on a transparent incubator, light intensity loss simulation is conducted through an open-circuit type laser gas detector, and light intensity loss simulation data is obtained; based on a multi-perceptron model, constructing a light intensity loss influence model by using the light intensity loss simulation data; constructing a gas detection light path based on an open-circuit laser gas detector, and dynamically collecting the light intensity of laser passing through the transparent incubator to obtain related gas detection data; comprehensive gas concentration detection analysis is carried out, and gas detection management is carried out on the interiors of the transparent culture boxes; the device and the method are used for solving the problem that when the gas concentration in the transparent incubator is detected by an existing gas concentration detection technology, the gas concentration in the transparent incubator cannot be accurately detected in real time under the condition that the internal environment of the incubator is basically not influenced.

The invention provides a method for positioning, early warning and automatically correcting a monitoring target of a laser gas detector, which comprises the following steps of: aligning the central position of a camera with a monitoring target object to obtain an initial picture, and extracting image features to obtain a sample set A; a camera shoots an actual picture to extract image features to obtain a sample set B at a target position; calculating an offset distance and an offset according to the picture features in the sample set B and the sample set A; if the offset distance is smaller than an error threshold value, performing gas detection to analyze the concentration; if the offset distance is greater than or equal to the error threshold, determining an adjustment direction according to the offset, and calculating a new target detection angle by using the adjustment amplitude; and moving the camera in the horizontal direction and the vertical direction towards the adjustment direction by the adjustment amplitude to obtain a horizontal offset and a vertical offset, calculating a compensation angle, if the compensation angle is greater than a preset threshold value, sending an alarm notice, otherwise, resetting the target position according to the compensation angle. According to the invention, the accuracy and timeliness of gas detection around the target object are ensured, and the cost expenditure is reduced.

The present disclosure relates to a dust-removed odor sampling device for oil shale and a photoelectric fused method for underground in-situ exploration and thermal evolution stage monitoring of oil shale, belonging to the technical field of oil shale in-situ exploration and exploitation. The present disclosure includes: establishing an dust-removed odor sampling device, which includes an imitation sandfish lizard dustproof chamber, an imitation leaf filter membrane, a single-chip microcomputer controller, a dust collection box, a solenoid valve and an air pump; using a redesigned FB score and a feature selection algorithm to optimize a gas sensor array and reduce the apparatus volume and energy consumption; and combining the optimized gas sensor array with the optical gas detector to realize the underground in-situ exploration and thermal evolution stage monitoring of oil shale by the photoelectric fusion method.

A gas detection device for detection of one or more gas analytes in an environment includes a housing including an inlet via which gas to be sampled from the environment enters the housing, a control system within the housing comprising a processor system and a memory system in communicative connection with the processor system, and one or more gas sensors within the housing in fluid connection with the inlet and in communicative connection with the control system. Each of the one or more gas sensors is independently responsive to one of the one or more gas analytes. The control system is configured to control flow rate of gas from the environment through an accessory device assembly including one or more accessory devices in fluid connection with the inlet on the basis of data for the accessory device assembly in fluid connection with the inlet.

The invention discloses a battery pack intelligent fire extinguishing system based on multistage thermal runaway early warning, which comprises a sensing monitoring module, a data processing module, an execution mechanism module and a communication interaction module, the sensing monitoring module comprises a distributed temperature sensor array for monitoring the surface temperature of the battery in real time and detecting abnormal temperature rise, a voltage / current monitoring circuit for detecting the voltage fluctuation of the battery and identifying the risk of internal short circuit, and a multi-gas detector for detecting the CO / CO / H concentration and judging the initial decomposition reaction of the electrolyte. According to the invention, three-level early warning can be carried out at the potential risk stage of thermal runaway, the initial stage of thermal runaway and thermal runaway outbreak, so that early warning or fire-fighting treatment can be carried out in advance, and disaster expansion is avoided; the situation of false alarm caused by temperature rise in the battery charging process can be reduced, and the early warning accuracy of the system is improved.

The invention belongs to the related field of gas detection devices, and discloses a photoacoustic gas chamber equipped with a cantilever type micro-sound sensor and application of the photoacoustic gas chamber. The axial main body part of the photoacoustic gas chamber is designed to be cylindrical and can be provided with elements such as a gas inlet, a gas outlet, an optical window and a reflecting mirror; wherein the optical window is used for emitting laser into the gas chamber to excite the gas to be detected, the reflecting mirror is used for reflecting the laser for multiple times in the gas chamber, and the cantilever type micro-sound sensor is used for correspondingly bending when the sound pressure in the gas chamber changes, so that sound signals generated after the gas to be detected generates excitation are collected. The arrangement mode, the working mechanism and the like of the components are further optimized and improved. According to the invention, a non-resonant compact photoacoustic gas chamber can be obtained, the advantages of high precision, high sensitivity and the like of a cantilever type micro-acoustic sensor can be fully exerted, and the whole gas chamber can effectively resist vibration noise caused by environmental interference.

A method of calibrating a gas sensor comprises determining a sensitivity of a gas sensor to one or more conditions proximate the gas sensor, determining one or more initial calibration factors comprising a sensitivity of the gas sensor to one or more analytes of interest, determining a current sensitivity of the gas sensor to the one or more conditions proximate the gas sensor by measuring a response of the gas sensor while the one or more conditions proximate the gas sensor varies during operation of the gas sensor, and adjusting the one or more initial calibration factors of the gas sensor based, at least in part on the current sensitivity of the gas sensor to the one or more conditions proximate the gas sensor, and a relationship between the sensitivity of the gas sensor to the one or more analytes of interest to the sensitivity of the gas sensor to the one or more conditions proximate the gas sensor. Related gas detectors, related methods of compensating and calibrating the gas sensors, and methods of determining a functionality of the gas sensors are disclosed.

An indoor air cleaning system with a networking mechanism is disclosed and applied in an indoor field (A) for detecting and cleaning air pollution completely. A real-time air quality monitoring in the indoor field (A) is achieved by arranging plural gas detectors (A), at least one gas molecule control hardware device (2), at least one air conditioning device (3) and a networked cloud computing service device (4) in the indoor field (A) and forming an intelligent linked system by the arranged gas detectors (1) in an outdoor filed and the indoor field (A). Meanwhile, the air pollution in the indoor field (A) is also detected and intelligently compared with an ambient air quality status, and an air guiding volume of an air guiding fan (21) is instantly controlled according to the air quality. Whereby an energy saving benefit of the effective controlling operation of the purification device is achieved.

A tunnel excavation harmful gas monitoring device disclosed by the present invention comprises a pump suction type gas detector, a cleaning mechanism and a driving mechanism, a gas inlet of the pump suction type gas detector is hermetically communicated with a gas suction pipe which is integrally arranged on a main shell frame, and the cleaning mechanism is arranged in a middle circular pipe cavity of the main shell frame. The main shell frame can automatically clean the filter part in a flapping mode and is used for sealing and blocking the air suction pipe before the filter part is cleaned, the filter part is arranged at the communication position of the middle round pipe cavity and the lower round pipe cavity of the main shell frame in a sealing mode, and an end cover with a hole is fixedly connected to an opening in the lower end of the middle-lower round pipe cavity of the main shell frame in a threaded mode. According to the tunnel excavation harmful gas monitoring equipment, automatic flapping type cleaning operation is achieved, multi-point uniform flapping is guaranteed, the cleaning efficiency is guaranteed, in addition, in the ash cleaning operation, sealing treatment is conducted on a gas flow channel in the monitoring equipment, and the monitoring effect is prevented from being disturbed.

The invention discloses a copper wire annealing temperature gradient control device which comprises a box body, and an inert gas supply source, an induction heating power supply, a control unit and a cooling water supply source are arranged outside the box body. The front end of the box body is provided with a door body, a left hinge and a right lock catch. A connecting seat is arranged at the bottom in the box body, a mounting plate is arranged at the middle upper part of the box body, and a vertical guide rail column is detachably mounted between the connecting seat and the mounting plate; clamping structures are arranged at the upper and lower ends of the base; and copper wires are detachably mounted on the clamping structures. And two ends of the electromagnetic heating coil penetrate out of the box body and are connected with an induction heating power supply. And the top of the base is connected with the take-up and pay-off equipment through a stay wire. Two temperature measuring assemblies are arranged on the box wall and located above and below the electromagnetic heating coil respectively. The lower end of the side wall of the box body is connected with an inert gas supply source, and the upper end is provided with an exhaust pipe with a valve and an online gas detector. The side wall of the box body is connected with an inclined bent pipe and an emptying pipe with a valve, and a water inlet pipe penetrates through the side wall of the box body and is connected with the box body.

The invention provides a mining gallium nitride gas sensor which comprises a main box body, a gas inlet cover is arranged on the bottom face of the main box body, and a PLC main board loaded with a gallium nitride chip is installed in the main box body; the gas detector comprises a shell column, and the shell column is installed in the middle of the bottom face of the main box body and located in the gas inlet cover; an inner blowback part for cleaning the filtering part is arranged in the connecting screw pipe, and an outer blowback part for cleaning the air inlet cover is arranged outside the shell column; identification assemblies are symmetrically arranged on the two sides of the main box body; the identification assemblies rotating upwards are contained on the two sides of the main box body so as to identify the gas detection position. The identification assembly rotating downwards encloses the outer part of the air inlet cover so as to carry out closed calibration and maintenance identification; and a hoisting mechanism. The surface of the air inlet cover and the interior of the filtering part can be synchronously cleaned, and dust and impurities are thoroughly removed; the closed calibration area is formed through automatic butt joint of the side enclosure cover, and a temporary closed environment does not need to be built manually.

The invention relates to an indoor heat pump (1) configured to be installed inside a building, the heat pump (1) comprising: - a housing (2) which houses a heat pump circuit (4), - a flammable refrigerant contained in the heat pump circuit (4), - a ventilation pipe (8) and a fan (10) connected to the ventilation pipe (8) in a fluid-conducting manner, - a gas detector (12) located in the housing (2), and - an electrical control unit (14) referred to as a safety card (14'), wherein the ventilation pipe (8) is arranged to convey air from the interior of the housing (2) to the outside of the building (2) upon activation of the fan (10), wherein the safety card (14') is configured to receive a leak detection signal (LS) from the gas detector (12) and to activate the fan (10) in response to receipt of the leak detection signal (LS). The indoor heat pump (1) further comprises a differential pressure sensor (16) configured to detect a pressure difference (DF) between the inside and the outside of the housing (2), wherein the safety card (14') is configured to trigger recurring functional tests (FT) by activating the fan (10) and evaluating a developing pressure difference (DF) measured by the differential pressure sensor (16), wherein the functional test (FT) is passed if the developing pressure difference (DF), in particular depicted as a negative differential pressure, exceeds a predetermined pressure threshold.

The invention provides a data analysis method and system for coal mine safety monitoring, and belongs to the field of data processing. The method comprises the following steps: acquiring original acquisition data of a gas detector in a target area to obtain an acquired gas concentration; establishing an equipment attenuation characteristic curve of the gas detector, and obtaining an equipment attenuation coefficient; acquiring real-time environment data of the target area, and determining an environment influence coefficient of the gas detector under the equipment attenuation coefficient; and correcting the collected gas concentration to obtain the actual gas concentration of the target area. According to the method and the device, the technical problem of inaccurate detection of the gas detector caused by non-ideal environment correction effect due to the fact that an environment correction method based on a standard state is adopted to carry out environment factor influence correction on the gas detector in the prior art is solved; the technical effects that self-adaptive environment influence correction is achieved based on the equipment attenuation state of the gas detector, the environment correction effect is improved, and then the detection accuracy of the gas detector is improved are achieved.

The invention relates to the technical field of gas insulation ring main units, discloses an intelligent environment-friendly gas insulation ring main unit, and solves the problem that when a gas leakage part of an environment-friendly gas tank is positioned, environment-friendly gas cannot be smoothly and sensitively captured by a gas monitor, so that the positioning difficulty of the gas leakage part of the gas tank is relatively high. Air flow generated during air leakage in the sealing cover drives the fan blades to deflect, the position of a connecting piece where air leakage occurs in the air box is determined according to the position of the driven measuring assembly, the specific direction of the air leakage position on one side of the connecting piece is determined, later maintenance is facilitated, detection is not affected by physical or chemical properties of environment-friendly gas stored in the air box, and the detection accuracy is improved. The detection effect is reliable, tracer gas is further introduced into the rubber cover, when gas leakage at the assembly position of the connecting piece is slow, the tracer gas flows into the gas detection pipe and is detected by the gas detector, the gas leakage condition can be detected, and the safety and reliability of gas leakage detection of the gas tank are further improved.

The invention relates to the field of sounding probes, and discloses a static sounding probe and method for integrated greenhouse gas in-situ measurement, the static sounding probe comprises a detection probe provided with a gas detector, a temperature detector and a pore water pressure detection head, before the detection probe is inserted into soil, a fixing rod is in a folded state, and a closing cover covers the surface of an air window; the folding state of the detection probe plays a protection role, prevents soil particles from entering the upper chamber to damage the gas detector and the temperature detector in the soil insertion process, enables the overall size of the detection probe to be small, is convenient to insert into the soil, and can prevent the gas detector and the temperature detector from being damaged after the detection probe is inserted to a preset depth. Due to the fact that the electric push rod is obliquely arranged, an output shaft of the electric push rod is connected with the fixing rod through the connecting piece, when the electric push rod extends, the fixing rod can be pushed to swing outwards around the rotating shaft, the straight surface, close to one side of the electric push rod, of the lower portion of the fixing rod is a stress point, and the fixing rod can be stably unfolded outwards.

The invention discloses a modularized multi-gas detector, which relates to the technical field of gas detection equipment, and comprises a shell, a fixed part fixed on the shell and a sensor module dismounting block arranged in the shell, the sensor module dismounting block is provided with an air inlet, an air outlet and an air detection cavity communicated with the air inlet and the air outlet, a flow guide block, a filtering unit for dynamically adjusting the filtering precision and a detection unit are sequentially arranged in the air detection cavity, and an air pump for forming negative pressure is arranged in the flow guide block; the filter unit comprises expandable and contractible filter fibers and a pressure applying assembly for driving the filter fibers to expand and contract. The gas detection device has the effect of efficiently and accurately detecting various gases.

The invention discloses a gas detector based on an MOS gas sensor and a gas detection method, and belongs to the field of gas detection. The gas detector comprises a gas sensor adapter plate, an MOS gas sensor, a display screen, a key panel and a gas detection circuit, a gas sensor socket is fixed on the gas sensor adapter plate, and different types of MOS gas sensors are detachably embedded in the gas sensor socket; the MOS gas sensor is used for detecting to-be-detected gas in the environment and generating response data; the gas detection circuit receives and processes the response data, and obtains the measurement concentration of the gas to be detected according to a preset response-concentration calibration relational expression; the key panel is used for setting a working detection mode and heating parameters of the MOS gas sensor, and the display screen is used for displaying the measured concentration of gas to be detected. And the function of detecting the concentrations of different gases with relatively low cost and power consumption in a simple and complex environment is realized.

The invention relates to the technical field of gas sensors, in particular to a gas sensor environment interference compensation method which is applied to environment interference compensation of product gas sensors such as industrial and commercial gas detectors, household gas alarms and air quality monitors and comprises the following steps: S1, a high-precision temperature sensor and a humidity sensor are additionally arranged; the method comprises the steps of S1, recording standard gas concentration, environment temperature, humidity and timestamp data in a calibration stage, S3, obtaining time domain and frequency domain influence characteristics of temperature on gas concentration detection, S4, extracting response curves of humidity in the time domain and the frequency domain, S5, designing a deep learning model, S6, carrying out iterative optimization, and S7, applying the method to production calibration and actual gas detection. The measurement precision of the gas sensor under the interference of a complex environment can be improved, and the compensation effect is improved.

The utility model relates to a toxic gas detection simulation and exhaust device based on an underground goaf. The device comprises a detection simulation assembly and an exhaust assembly which are connected, and is structurally characterized in that the detection simulation assembly comprises a detection simulation host, a four-in-one gas detector and an audible and visual alarm, and the exhaust assembly comprises an exhaust fan and an exhaust pipe. The four-in-one gas detector, the audible and visual alarm and the exhaust fan are all in circuit connection with the detection simulation host, the exhaust fan is in pipeline connection with one end of the exhaust pipe, and the detection simulation host is provided with a host cover plate used for shielding the button. The detection simulation host comprises a main control board, a contactor, a change-over switch, an inverter, a battery, an ampere meter, a red button, a green button and a female interface, the contactor, the battery, the ampere meter, the red button, the green button and the female interface are all connected with the main control board, the change-over switch is respectively connected with the inverter and AC220V, and the inverter is connected with the battery.

A high-position gas detector calibration device belongs to the technical field of high-position gas detector calibration equipment and comprises a calibration cover, a connecting rod, a plurality of extension rods and an outer joint, the calibration cover is detachably mounted at the top of the connecting rod, and external threads are arranged on the outer surface of the lower end of the connecting rod and the outer surfaces of the lower ends of the extension rods. Nuts are fixedly installed at the top ends of the connecting rods, the connecting rods are connected with the extension rods through screw joint matching of the external threads and the nuts, the extension rods are connected together through matching of the external threads and the nuts, air bins are arranged in inner cavities of the connecting rods, and the air bins are communicated with an inner cavity of the calibration cover. According to the utility model, the calibration cover can be buckled at the position of the gas detector on the ground, the calibration is carried out by utilizing the inner pipes to convey the calibration gas, the existing mode of calibrating the high-position gas detector by climbing can be replaced, and the operation is safer and more reliable.

The utility model provides a toxic gas detector control circuit capable of resisting electromagnetic interference, which comprises a power supply voltage regulation circuit, a temperature signal acquisition circuit, a sensor voltage regulation circuit, a sensor acquisition control circuit and a gas detector main control circuit which are in power supply connection. The gas detector main control circuit is in control connection with the 485 communication circuit, the acousto-optic prompt circuit, the LED state display circuit and the digital display screen, the gas detector main control circuit is in communication connection with the sensor acquisition control circuit, and the sensor acquisition control circuit is in control connection with the gas signal acquisition circuit and the temperature signal acquisition circuit. A TVS (Transient Voltage Suppressor) tube, a common mode inductor and a diode are arranged in the power supply voltage adjusting circuit; and a TVS tube and a diode are also arranged in the gas detector main control circuit. The poisonous gas detector has the beneficial effects that the anti-electromagnetic interference capability, the reliability and the stability of the poisonous gas detector when the poisonous gas detector is independently used are greatly improved.

The invention relates to the technical field of fire operation supervision, in particular to a fire operation management and control system and method, and the system comprises a management and control platform, fire operation equipment, an intelligent data collection device, a deployment and control ball, and a gas detector. The management and control platform comprises an enterprise terminal, an APP mobile terminal and a supervision platform. An enterprise transmits fire work ticket information to the supervision platform through an enterprise terminal, and the supervision platform controls all fire work behaviors, so that supervisors can quickly master fire work reporting, work progress, violation behaviors and other information in an area under administration. And illegal behaviors such as unreported fire operation arbitrarily, operation personnel who do not hold the certificate to work or operation certificates are not in the validity period and arbitrarily change operation places exist, so that data support is provided for precise supervision and law enforcement of supervision departments.

The utility model discloses a pumping and diffusing dual-purpose gas circuit structure on a gas detector. The pumping and diffusing dual-purpose gas circuit structure comprises a calibration cover assembly, a shell, a sensor assembly, a gas pipe bracket and a gas pump assembly, the calibration cover assembly is detachably connected with the shell; a plurality of air holes are formed in the shell; one end of the tracheal stent is communicated with the air hole of the shell, and the other end is communicated with the air pump assembly; the sensor assembly is arranged under the air hole. The air pump assembly is arranged below the sensor assembly; the calibration cover assembly comprises a filtering assembly, a rotating assembly, a calibration cover and an air chamber frame; the filtering assembly is arranged at one end of the calibration cover, and the air chamber frame is arranged in the calibration cover and arranged above the shell; one end of the rotating assembly penetrates through the calibration cover and the air chamber frame and then is detachably connected with the shell. According to the utility model, the pump suction mode and the diffusion mode can be freely switched, and the pump suction mode and the diffusion mode share the same calibration cover assembly for calibration, so that the consistency of the detection precision of the pump suction mode and the diffusion mode can be ensured.

The invention discloses an integrated waste gas treatment device which comprises a liquid tank, a machine frame is arranged on the liquid tank, a filtering mechanism and a purification tower mechanism are arranged on the machine frame and connected through a conveying pipeline, a pump body is arranged on the outer side of the liquid tank and connected with a spraying pipeline, and the spraying pipeline is communicated with the filtering mechanism. The spraying pipeline extends into the purifying tower mechanism, the purifying tower mechanism is connected with the liquid tank through a backflow pipeline, and the filtering mechanism comprises a first filtering assembly, a second filtering assembly and a third filtering assembly. The technical key points are as follows: by controlling the rotating angle of the filtering disc, the filtering area of the filtering disc is switched, so that the continuous filtering of the filtering mechanism is realized; the large purification tower mechanism is divided into three groups of small purification towers; the content of harmful substances in the waste gas is detected through a gas detector; the multiple sets of waste gas treatment equipment are arranged on the rack in a layered mode to form an integrated structure.

The utility model relates to the technical field of gas detection, in particular to a pumping type laser gas detector, which comprises a laser transceiver and a gas pump, the laser transceiver is positioned above the gas pump, the end part of the laser transceiver is connected with an anti-explosion flexible pipe, and the gas inlet end of the gas pump is communicated with a gas inlet hose; the air chamber detection mechanism is mounted at one end of the laser transceiver, and the surface of the air chamber detection mechanism is communicated with the other end of the air inlet hose; according to the pump suction type laser gas detector, gas in the gas chamber shell can be mixed under the action of the mixing assembly and the homogenizing assembly, two strands of inlet gas are initially mixed through the homogenizing assembly, and gas flow entering the gas chamber shell can be uniformly mixed in cooperation with the internal structure of the gas chamber shell; the change of the air pressure on one side of the inner wall of the air chamber shell is reduced, the refraction offset of light is reduced, and the detection precision is guaranteed.

The invention discloses a multipurpose pen-shaped scanning proton beam detection device and method, and relates to the field of proton therapy detection.In the device, a mounting support is arranged on a machine head of a proton therapy machine and rotates along with a rotating rack of the proton therapy machine; the microstructure gas detector is used for measuring proton information; the detector and motion control part is used for receiving a detection instruction issued by the remote control center; driving the microstructure gas detector and / or the lead point to move to a preset position according to the detection instruction; collecting proton information corresponding to the preset position and transmitting the proton information to the remote control center; the detection instruction is determined according to detection requirements; and the remote control center is used for performing analysis based on the proton information to obtain a detection result. According to the invention, multiple measurements can be completed, one machine has multiple purposes, and the measurement precision can be ensured while the working efficiency is improved.