35results about How to "Real-time monitoring of leaks" patented technology

The invention discloses an internet of things gas meter communication system based on the NB-IoT communication technology and an internet of things gas meter communication method thereof. The system comprises a master control module, a storage module, an infrared communication module, an alarm module, a power supply detection module, a display module, a metering module, a valve control module, a real-time clock module, a key module and an NB-IoT module. The master control module is simultaneously connected with all other modules. Wireless network data transmission is realized by using the NB-IoT module, the system has the extranet access capacity, remote monitoring of the gas meter metering, valve and meter state data can be realized and the objectives of remote meter reading, tiered gas price real-time adjustment, remote valve control and big data collection and analysis can be realized without manual visiting for meter reading.

The invention discloses a kitchen fuel gas alarm detection device, and the device comprises a gas collection module, an A / D converter module, a temperature collection module, an infrared detection module, a remote control module, a liquid crystal display module, a sound-light alarm module, a wireless communication module, a central controller, and a power supply. A collection output end of the gas collection module is connected with the central controller through the A / D converter module. The temperature collection module, the infrared detection module, the remote control module, the liquid crystal display module, the sound-light alarm module and the wireless communication module are respectively connected with the central controller. The invention also discloses an alarm detection method of the device. According to the invention, the device detects the concentration of fuel gas in a kitchen environment in real time, starts an alarm lamp and a buzzer to give an alarm if the concentration exceeds a set threshold value, and transmits information to a target cellphone terminal for real-time prompt, thereby achieving the real-time detection of the leakage of fuel gas in the kitchen, and eliminating the potential safety hazards.

The invention relates to a safety heat exchanger capable of monitoring leakage in real time. The safety heat exchanger comprises a cross-flow type shell and a heat exchanger core which is arranged in the cross-flow type shell, wherein a first fluid inlet, a second fluid inlet, a first fluid outlet and a second fluid outlet are respectively formed on a first sealing head, a second sealing head, a third sealing head and a fourth sealing head; a first vacuum layer sealing head is arranged at a joint of the first sealing head and the fourth sealing head; a vacuumizing device and a pressure detector or a material component detector are arranged on the first vacuum layer sealing head; a first vacuum layer is communicated with the first vacuum layer sealing head; a first fluid flow channel is respectively communicated with the first fluid inlet and the first fluid outlet; and a second fluid flow channel is respectively communicated with the second fluid inlet and the second fluid outlet. The safety heat exchanger capable of monitoring the leakage in real time is high in heat transfer efficiency, high in performance and high in equipment safety and can monitor the leakage situation in real time, and production safety and production quality are ensured.

The invention discloses an aluminum electrolysis tank leakage detection method based on a tank leakage monitoring device, and belongs to the field of aluminum electrolysis tank leakage monitoring. The leakage conditions at each point of an electrolytic tank body are monitored through the temperature at each point of the tank body and real-time change, so that the method is accurate and effective; and simultaneously, the service life of the tank leakage monitoring device can be prolonged, and the accuracy and stability of the aluminum electrolysis tank leakage detection method are ensured.

The invention relates to an indoor gas pipeline leakage detection method and a pressure sensing device for the method. The method comprises the steps that the pressure sensing device is installed in an indoor gas pipeline of a gas consumer; a corresponding inlet main valve is closed, the pressure sensing device detects the pressure in the indoor pipeline, and when the indoor pipeline pressure is lower than or higher than a set value, a signal is output to lock the gas inlet end of an inlet pipeline. The pressure sensing device is connected with a control center through telecommunication and gives an alarm to the control center, and the control center outputs the control signal to lock the gas inlet end of the inlet pipeline. Or the pressure sensing device directly communicates with the inlet main valve, and the gas inlet end of the inlet pipeline is locked by the inlet main valve. According to the method, the problem that a detection device body is low in sensitivity or the detection sensitivity is influenced by external factors is effectively avoided, the reliability is high, the leakage condition of a gas pressure reaction can be monitored in real time, and small leakage can be found in time.

The invention provides a LNG gas supply system on a deck transport ship, and the LNG gas supply system includes at least one LNG fuel tank, at least one set of fuel filling and containment system, a LNG fuel pressurized gasification / heating system, a gas supply auxiliary system, and a safety monitoring / emergency shutdown system; the fuel filling and containment system and the LNG fuel tank constitute a connection loop, and the LNG fuel pressurized gasification / heating system gasifies and heats LNG fuel to a dual fuel main engine; the gas supply auxiliary system provides a heating heat source for the LNG fuel pressurized gasification / heating system; and the safety monitoring / emergency shutdown system is used to monitor liquid level, pressure and temperature of the LNG fuel tank, a LNG leakage monitoring system, a fire detection system and an emergency shutdown system. The LNG gas supply system has two sets of fuel filling and containment systems, any one of the fuel filling and containment systems is easy to fill, and two sets of LNG barge / spray pumps are arranged and facilitate controlling of the pressure in the LNG fuel tank and ensuring of the stability and reliability of the gassupply system.

The invention discloses a fluid pipeline leakage source positioning system and method, and relates to the technical field of pipeline detection. According to the fluid pipeline leakage source positioning system and method, the problem that a leakage source position in a fluid pipeline obtained through calculation by a fixed sound wave propagation speed in the prior art is inaccurate is solved. Thefluid pipeline leakage source positioning system comprises a master station unit and n substation units, each sub-station unit communicates with a fluid pipeline, furthermore, the n sub-station unitsare sequentially distributed in the direction of the fluid pipeline, and the main station unit comprises a selection module, a processing module and a control module, wherein the selection module isin interactive connection with each of the sub-station units; and n is larger than or equal to 2. According to the technical scheme, the fluid pipeline leakage source positioning method comprises thefluid pipeline leakage source positioning system, and the fluid pipeline leakage source positioning system is used for detecting a pipeline leakage source.

The invention provides a microwave frequency hopping transceiver. The microwave frequency hopping transceiver comprises a microwave relay transmitting and receiving unit, a microwave relay transformation unit and a microwave relay frequency conversion coverage unit. By the microwave relay transmitting and receiving unit, the microwave relay transformation unit and the microwave relay frequency conversion coverage unit, uncertainty on microwave loss of a link and instability on receiving and transmitting power level are reduced, problems of frequency deviation and linear distortion in microwave transmission are solved, leakage conditions of transmitted and received signals can be monitored in real time, communication reliability is high, and the coverage range and the using strength of a base station can be improved effectively.

The invention discloses an aluminum electrolysis cell leakage detecting method based on a cell leakage monitoring device, and belongs to the field of aluminum electrolysis cell monitoring. The method dynamically compensates acquired temperature according to acquired aluminum electrolysis cell temperature values and aluminum electrolysis cell temperature variation trends, so that a system can accurately prejudge a temperature regulating quantity to effectively monitor the temperature in the aluminum electrolysis process, the leakage condition in each point of a cell body of the electrolysis cell can be more accurately and effectively monitored in real time, and the aluminum electrolysis quality is guaranteed; and meanwhile, as the influence of interference data is greatly eliminated, the adaptability of the temperature monitoring method in different aluminum electrolysis environments is guaranteed. The cell leakage condition can be effectively prevented through judging whether the time of the compensated temperature value not smaller than a set temperature value reaches a threshold value or not.

The invention discloses a monitoring device and method for precisely distinguishing external leakage of a heat supply network. The device comprises a monitoring center, an impedance sensing line, an optical fiber monitoring line, a plurality of monitoring nodes and a plurality monitoring substations. The monitoring center comprises a GIS data processor, a server, an alarming device, a display device and a first wireless communication device. The server is connected with the GIS data processor, the alarming device, the display device and the first wireless communication device. Each monitoringnode comprises an impedance sensor and a GIS data collector. The impedance sensing line is connected with the impedance sensors through guide wires, and each impedance sensor comprises a data collecting module and a data transmission module. The impedance sensors transmit data collected by a data transmission module to the nearest monitoring substation, and the GIS data collectors are connected with the GIS data processor. According to the monitoring device and method for precisely distinguishing external leakage of the heat supply network, tiny leakage of the heat supply network can be monitored, and leakage outside the heat supply network can also be judged.

The invention relates to an all-fiber valve leakage ultrasonic monitoring system. The system includes an ultrasonic detection host, a fiber sensor, an end reflection head, and a transmission optical cable. The fiber sensor is used for sensing leakage of a valve. The end reflection head is used for reflecting light beams. The transmission optical cable is equipped with a fiber inside, and is used for transmitting light beams. One end of the fiber sensor is connected to the ultrasonic detection host through the transmission optical cable, and the other end of the fiber sensor is connected to the end reflection head. The system solves the problems that a conventional monitoring method is poor in sensitivity and low in reaction speed, and overcomes the disadvantages that a piezoelectric ultrasonic sensor is small in frequency scope and high in driving voltage, short in application distance and poor in anti-interference capability. The system is capable of monitoring ultrasonic signals in real time, is passive, is wide in frequency scope, quick in reaction speed, high in sensitivity, long in detection distance and wide in application environment, has a high anti-interference capability, and is especially greatly improved in dynamic scope.

The invention discloses a phase modifier rotor packing cooling water leakage monitoring and analyzing device and an application method. The device comprises a processor module, an alarm module, a flowmonitoring module which is used for monitoring the water outflow flow of phase modifier rotor packing, and a water leakage monitoring module which is used for monitoring the water leakage of a phasemodifier excitation chamber; the processor module comprises a processor unit and a signal conversion unit; the input end of the processor unit is connected with the output end of the flow monitoring module and the output end of the water leakage monitoring module; and the output end of the processor unit and the output end of the water leakage monitoring module are connected with the control end of the alarm module through the signal conversion unit. The drainage flow of the phase modifier rotor packing is visually displayed, packing adjustment can be reminded in time, meanwhile, the leakage condition of packing cooling water is monitored in real time, and the accident handling efficiency is improved. The device and method have the advantages of simple structure, low cost and high expansibility.

The invention discloses a high-sensitivity intelligent liquefied petroleum gas leakage alarm system. The system comprises a shell, a core control module, a micro-flow sensor, an in-place detection module, a warning module, an NB-IoT module, a valve driving module, an electromagnetic valve, a power supply module and a safety management platform. The shell is used for connecting the pressure reducing valve and the fuel gas rubber pipe and protecting all the modules. A connecting pipeline is arranged in the shell, the two ends of the connecting pipeline are matched with a connector of the pressure reducing valve and a connector of the fuel gas rubber pipe respectively, and the connecting pipeline is made of non-conductive materials. The micro-flow sensor, the in-place detection module, the core controller, the valve driver, the electromagnetic valve, the NB-IoT module and the power module are installed in the shell, and the warning module is located outside the shell. The core control module judges whether leakage exists or not by calculating the accumulated gas amount, and the service life is greatly prolonged through the anti-pollution capacity of the sensor and the low-power-consumption mode of the core control module and the NB-IoT module.

The invention discloses a wiring type pipe monitoring system. The system comprises monitoring equipment, a diode and a pipe measuring line, wherein a first end of the pipe measuring line is connectedwith an anode of the diode; a cathode of the diode is connected with a first end of a to-be-measured pipe; a second end of the pipe measuring line and a second end of the to-be-measured pipe are separately connected to the monitoring equipment to form a loop; the monitoring equipment transmits current signals to the pipe measuring line; and whether the to-be-measured pipe is abnormal or not according to the feedback condition of the current signals; the monitoring equipment comprises a comparison circuit; and when the to-be-measured pipe leaks, the monitoring equipment measures voltage in theloop so that the leakage resistance of the to-be-measured pipe can be determined during leakage. According to the disclosed wiring type pipe monitoring system, the diode is connected between the pipemeasuring line and the to-be-measured pipe, abnormity of the loop is monitored according to feedback conditions of transmitting current signals, the problem that in the prior art, only short-circuiting can be monitored is solved, and workers can be timely notified to repair equipment.

The invention relates to the technical field of clutches and discloses an electric hydraulic servo clutch, a gear box taking an electronic control pressure disc way to perform separation and combination comprising the electric hydraulic servo clutch, and a vehicle provided with the electric hydraulic servo clutch. The electric hydraulic servo clutch comprise an assistant cylinder, four control pistons, an oil pot, an assistant piston, a magnetic valve and a sensor; the assistant piston adopts a double-guide ring design; the magnetic valve adopts the directly operated type pneumatic magnetic valve with high responding speed; the acting force of a hydraulic work cavity is equivalent to that of the assistant cylinder; the stroke of a push rod is displayed a stroke sensor with a self-adjusting structure; the assistant piston adopts a spring to reset; the oil pot adopts a container type design; and a hydraulic main cylinder is sealed by a two-way Y-shaped ring design. The electric hydraulic servo clutch can be directly installed on the existing gear box support, and no change is required for the existing installing way. In addition, in the electric hydraulic servo clutch provided by the invention, a hydraulic cavity is free from air exhausting and hydraulic leakage can be monitored in real time through a procedure, therefore, the electric hydraulic servo clutch is especially applicable to the gear box taking the electronic control diaphragm pressure disc type way to perform separation and combination.

The invention discloses a remote monitoring system based on the internet and an intelligent oil conservator. The remote monitoring system comprises the oil conservator, a detection module, an intelligent control module, an auxiliary oil tank, a background server, terminal equipment and an electrically-controlled oil pump, wherein the detection module is arranged on the oil conservator, an output end of the detection module is connected with the intelligent control module, and the intelligent control module is connected with the background server of an enterprise information control center through the internet; the background server is in wireless connection with the terminal equipment; and the auxiliary oil tank is connected with the oil conservator through the electrically-controlled oil pump. The remote monitoring system has the advantages of being capable of monitoring indexes of the on-line operating oil conservator in real time, achieving remote real-time supervision and monitoring of the oil conservator, meeting the need of unattended operation, being capable of observing operation condition of the oil conservator in real time through a supervising camera without on-site investigation, being capable of saving operation data of the oil conservator in various periods, and being convenient for subsequent lookup.

The invention discloses an intelligent wireless monitoring device for a GIS switch room environment, which includes a monitoring host, an SF6 sensor, an O2 sensor, a temperature and humidity sensor, a PSoC on-chip chip, a radio frequency transmitter, a radio frequency receiver, a solenoid valve and an isolation drive device, and an SF6 sensor , the O2 sensor and the signal terminal of the temperature and humidity sensor are respectively connected to the PSoC on-chip chip through wires, the PSoC on-chip chip is connected to the radio frequency transmitter, and the radio frequency receiver is installed on the monitoring host. The transmitter is connected with the radio frequency receiver through the radio frequency signal. The invention can accurately measure the SF6 gas in the switch chamber, solve the influence of the ambient temperature on the measurement parameters, and can display the collected data information through the liquid crystal display, with small false alarm rate, high stability, unobvious frequency drift, simple structure, and easy to use. convenient.

The invention discloses a wiring type pipe monitoring system. The system comprises monitoring equipment, a diode and a pipe measuring line, wherein a first end of the pipe measuring line is connectedwith an anode of the diode; a cathode of the diode is connected with a first end of a to-be-measured pipe; a second end of the pipe measuring line and a second end of the to-be-measured pipe are separately connected to the monitoring equipment to form a loop; the monitoring equipment transmits current signals to the pipe measuring line; and whether the to-be-measured pipe is abnormal or not according to the feedback condition of the current signals; the monitoring equipment comprises a comparison circuit; and when the to-be-measured pipe leaks, the monitoring equipment measures voltage in theloop so that the leakage resistance of the to-be-measured pipe can be determined during leakage. According to the disclosed wiring type pipe monitoring system, the diode is connected between the pipemeasuring line and the to-be-measured pipe, abnormity of the loop is monitored according to feedback conditions of transmitting current signals, the problem that in the prior art, only short-circuiting can be monitored is solved, and workers can be timely notified to repair equipment.

The invention discloses a safe and stable high temperature resistant hot water circulating pump system, which comprises a hot water circulating pump, a mechanical seal, a pressure control valve (9), a micro steam turbine (10), a screw pump (11), a heat exchanger ( 14), the jet device (16), is characterized in that: the outlet of the hot water circulating pump is connected with the threaded pump through the first pipeline, the threaded pump is connected with the heat exchanger through the pipeline, and the heat exchanger is connected with the jet device through the pipeline. Connection, the drive shaft of the screw pump is connected with the micro-turbine, the micro-turbine is connected with the first pipeline through the pipeline, the pressure control valve is connected between the micro-turbine and the first pipeline, the micro-turbine is connected with the jet device through the pipeline, and the jet device The second line is connected to the mechanical seal. It is mainly in shutdown and standby, the mechanical seal cooling water is still circulating to ensure that the mechanical seal is not damaged at the allowable working temperature; in addition, it can improve the pressure stability at the outlet of the impeller, thereby improving the output pressure stability of the hot water circulating pump. sex.

The invention belongs to the field of photochromic high polymer materials and discloses a photochromic fluorocarbon resin as well as a preparation method and application thereof. The photochromic fluorocarbon resin is prepared by carrying out graft modification on fluorocarbon resin by a diarylethene photochromic material. The photochromic fluorocarbon resin can form polyurethane high polymer under action of isocyanate and the polyurethane high polymer is solidified to prepare a photochromic fluorocarbon resin film. The photochromic fluorocarbon resin film can smoothly realize photochromic reaction, and then characters can be written through metachromatism. The photochromic fluorocarbon resin is especially suitable for preparing a coating material requiring photochromic characteristic, is used for the fields of information writing, real-time monitoring of leakage of ultraviolet light and the like, and can be used for places needing a plurality of writing method requirements.

The invention relates to the technical field of clutches, and discloses an electrohydraulic servo clutch, an electronically controlled separation or combination operation mode of a pressure plate type gearbox including the electrohydraulic servo clutch, and a vehicle equipped with the electrohydraulic servo clutch. The electro-hydraulic servo clutch of the present invention includes a booster cylinder, four control pistons, an oil pot, a booster piston solenoid valve and a sensor. The working force of the working chamber is equal to that of the booster cylinder. The push rod stroke is displayed by a self-adjusting stroke sensor, the booster piston adopts a spring return, the oil pot adopts a cartridge design, and the seal of the hydraulic master cylinder adopts a two-way Y-ring design. It can be directly installed on the existing gearbox bracket without changing the existing installation method. It can also realize that the hydraulic chamber does not need to exhaust air, and monitor the hydraulic leakage in real time through the program. It is especially suitable for gearboxes with diaphragm pressure plate type of electronically controlled separation and combined operation.

The invention discloses a detection device for simulating the sealing property of seal rings in rotary motion in a deep sea environment. The detection device comprises a high-pressure cylinder, wherein a piston is arranged in the high-pressure cylinder; a group of testing seal rings are symmetrically arranged at two ends of the piston; one end of the piston is connected with a vibration motor; a rotating speed sensor is fixed at an exhaust port of the high-pressure cylinder; a magnet is fixed on a motor shaft; a hydraulic device A is connected with a drive motor; leakage sensors are symmetrically distributed at the bottoms of two ends of the high-pressure cylinder; the middle position of the high-pressure cylinder is connected with a hydraulic device B through high-pressure tubes; a pressure sensor and a temperature sensor are arranged on each high-pressure tube; the rotating speed sensor, the pressure sensors, the temperature sensors and the leakage sensors all are connected with a controller; and the controller is connected with the hydraulic device A and the hydraulic device B. According to the detection device, the high-pressure cylinder is provided with different environmentsthrough the hydraulic device B, and the piston in the high-pressure cylinder carries out rotary motion through the hydraulic device A and the motor shaft in the drive motor, so that the sealing property of the seal rings in different environments is detected through the leakage sensors in the rotary motion process of the piston.

The invention discloses an aluminum electrolysis tank leakage detection method based on a tank leakage monitoring device, and belongs to the field of aluminum electrolysis tank leakage monitoring. The leakage conditions at each point of an electrolytic tank body are monitored through the temperature at each point of the tank body and real-time change, so that the method is accurate and effective; and simultaneously, the service life of the tank leakage monitoring device can be prolonged, and the accuracy and stability of the aluminum electrolysis tank leakage detection method are ensured.

The invention discloses a safe and stable high-temperature-resistant hot water circulating pump system. The safe and stable high-temperature-resistant hot water circulating pump system comprises a hot water circulating pump, a mechanical seal, a pressure control valve (9), a micro turbine (10), a threaded pump (11), a heat exchanger (14) and a jet device (16), and is characterized in that the outlet part of the hot water circulating pump is connected with the threaded pump through a first pipeline, the threaded pump is connected with the heat exchanger through one pipeline, the heat exchanger is connected with the jet device through one pipeline, a driving shaft of the threaded pump is connected with the micro turbine, the micro turbine is connected with the first pipeline through one pipeline, the pressure control valve is connected between the micro turbine and the first pipeline, the micro turbine is connected with the jet device through one pipeline, and the jet device is connected with the mechanical seal through a second pipeline. When the system is shut down and standby, mechanical seal cooling water still circulates, and it is guaranteed that the mechanical seal is not damaged at the allowable working temperature; and in addition, the pressure stability of an impeller outlet can be improved, and therefore the output pressure stability of the hot water circulating pump is improved.

The invention discloses an internet of things gas meter communication system based on the NB-IoT communication technology and an internet of things gas meter communication method thereof. The system comprises a master control module, a storage module, an infrared communication module, an alarm module, a power supply detection module, a display module, a metering module, a valve control module, a real-time clock module, a key module and an NB-IoT module. The master control module is simultaneously connected with all other modules. Wireless network data transmission is realized by using the NB-IoT module, the system has the extranet access capacity, remote monitoring of the gas meter metering, valve and meter state data can be realized and the objectives of remote meter reading, tiered gas price real-time adjustment, remote valve control and big data collection and analysis can be realized without manual visiting for meter reading.

The invention relates to a safety heat exchanger capable of monitoring leakage in real time. The safety heat exchanger comprises a cross-flow type shell and a heat exchanger core which is arranged in the cross-flow type shell, wherein a first fluid inlet, a second fluid inlet, a first fluid outlet and a second fluid outlet are respectively formed on a first sealing head, a second sealing head, a third sealing head and a fourth sealing head; a first vacuum layer sealing head is arranged at a joint of the first sealing head and the fourth sealing head; a vacuumizing device and a pressure detector or a material component detector are arranged on the first vacuum layer sealing head; a first vacuum layer is communicated with the first vacuum layer sealing head; a first fluid flow channel is respectively communicated with the first fluid inlet and the first fluid outlet; and a second fluid flow channel is respectively communicated with the second fluid inlet and the second fluid outlet. The safety heat exchanger capable of monitoring the leakage in real time is high in heat transfer efficiency, high in performance and high in equipment safety and can monitor the leakage situation in real time, and production safety and production quality are ensured.

The invention belongs to the field of hydrogen energy, and relates to a heat exchange structure and a heat exchange method of an all-multilayer steel high-pressure hydrogen storage container. Including protective shell, fuel tank and jacket; the protective shell is a sleeve structure, which is set in the middle of the full-layer steel high-pressure hydrogen storage container, and the protective shell is the steel belt layer of the full-layer steel high-pressure hydrogen storage container, and the protective shell There is a heat-conducting medium in the gap with the steel belt layer; there are two saddles on both sides of the bottom of the protective shell, which are used to support the full-layer steel high-pressure hydrogen storage container and heat exchange structure; the medium inlet joint of the protective shell and the protective shell The medium outlet joints are welded on the left and right ends of the protective shell respectively. The medium inlet joint of the protective shell is used to connect the oil pool, and the medium outlet joint of the protective shell is connected to the oil tank and the vacuum pump. There is a jacket medium inlet and outlet on the sleeve. The invention can realize the internal and external heat exchange of the full-layer steel high-pressure hydrogen storage container, and the operation is simple and convenient.

The invention relates to a rotation dynamic sealing device. A first water seal, a second water seal and an oil seal are sequentially arranged from a water cavity side to a bearing side of a rotary shaft and a framework I, a framework II and a framework III define two seal grooves which are matched with the first water seal and the second water seal on the inner side after being integrally fixed and fixedly support the first water seal and the second water seal; an oil lubricating cavity used for lubricating the second water seal is formed between the first water seal and the second water seal; the first water seal, the second water seal and the oil seal are in interference fit with the rotary shaft correspondingly; and the framework I, the framework II and the framework III are in clearance fit with the rotary shaft correspondingly. According to the rotation dynamic sealing device, due to the fact that the oil lubricating cavity is added, the dry friction state of the second seal ring is effectively avoided; and due to the fact that the frameworks are in an integrated structure, installation is easy and convenient, and particularly straight pins can effectively prevent the whole sealing device from rotating along the rotary shaft; and an oil-water alarm device can monitor the leakage situation of the first water seal in real time.

The invention discloses an intelligent combustible gas concentration monitor which comprises a bottom main body bin assembly, an upper battery bin assembly and an antenna assembly. The bottom main body bin assembly comprises an electrode, an insulating sleeve, a bottom shell, a first pagoda connecting nozzle, a second pagoda connecting nozzle, a detection module assembly, a communication plate sealing cavity and a communication plate; the upper battery compartment assembly comprises a battery clamping plate, a battery, a spring, an upper shell and an annular nut; the antenna assembly comprises an antenna housing, a GPS antenna, a 2.4 G antenna and a 4G antenna. An external air sample is extracted through the air extracting pump, the concentration value of combustible gas in the sample is detected through the drying and filtering technology and the laser technology, data are transmitted to the display platform through wireless transmission, and the combustible gas leakage condition can be monitored in real time; and when the device is submerged by liquid such as water, the liquid cannot enter the monitor by utilizing the atmospheric pressure principle, so that the whole device is protected from being damaged, the use safety is high, and the practicability is relatively strong.