87results about How to "Timely detection of leaks" patented technology

The invention creatively discloses gas pipeline safety detection joint-control equipment convenient in user self-service control. The gas pipeline safety detection joint-control equipment comprises a detection control device with an interactive panel, wherein the interactive panel is provided with control buttons and a display, the detection control device is connected with sensors for pressure, temperature, seismic waves, human body distance and the like and an electronically-controlled electromagnetic gas valve, can be used for controlling the timed opening/closing of the electronically-controlled electromagnetic gas valve according to set control parameters, can also be used for automatically closing the electronically-controlled electromagnetic gas valve according to gas transporting pipeline detection data of the sensors, further comprises a communication module and is in remote communication with a monitoring center and a user terminal through the communication module, and a user can carry out operations, such as remotely opening/closing the valve, viewing the detection data and changing setting, after corresponding application software is downloaded through terminals, such as mobile phones or computers. The equipment is used for detecting the abnormality of a gas pipeline in time and rapidly responding to protect and is rich in interactive mode, flexible in operation and intelligent in control, so as to comprehensively ensure the safety of the pipeline.

The invention belongs to the technical field of municipal sewage and discloses a precise aeration control system for sewage treatment fuzzification, which comprises a front end instrument, a frequencyconversion system and a back end control system. The back end control system comprises a PLC control system, a touch screen and a fuzzy controller; a programmable logic controller of the PLC controlsystem is in communication with the fuzzy controller and the touch screen, respectively; a fuzzy control method based on a precise aeration control system fuzzy controller is provided. The precise aeration control system and the fuzzy control method for sewage treatment fuzzification in the invention solve the problems that the traditional control system can interfere with the work of a biologicalsystem due to high energy consumption and too large fluctuation, a failure of the whole control system is caused after some instrument in the system breaks down, and inaccurate system measurement parameters cause wrong control output.

The invention relates to a packaging connector, in particular to an electrical penetrating packaging connector used in a low-temperature environment. An electrical penetrating connector for ceramic welding comprises a metal conductor and further comprises a ceramic insulator and a metal connecting flange, the metal connecting flange separates a medium side and an atmosphere side, the metal conductor penetrates through the metal connecting flange, and the metal conductor at the penetrating position of the metal conductor and the metal connecting flange is sleeved with the ceramic insulator. The low-temperature medium side is separated from the atmosphere side through welding sealing, electric power transmission is carried out well, and meanwhile the flammable and combustible media in a pump are prevented from leaking towards a connecting box along a cable. Meanwhile, a pressure monitor device arranged on the atmosphere side can discover the leakage situation through real-time detection. The sealing connector has the advantages of being simple in structure and safe and reliable in operation, and can meet the requirement of safe operation in a low-temperature work temperature. A ceramic-metal welding technology is adopted, the service life of a sealing boundary is long, and maintenance is avoided.

The invention relates to the technical field of gas devices, and discloses a gas device and a gas leakage detection method thereof. A gas pipeline component is arranged in the gas device and connectedto a gas manifold outside the gas device. The gas device further comprises a gas leakage detector, which comprises a first detector for detecting pressure or flow inside the gas manifold and a seconddetector for detecting pressure or flow inside the gas pipeline component. The gas leakage detection method comprises the following steps: acquiring detected values of the first detector and the second detector at the same time and calculating a detection difference; and determining whether gas leaks or not based on a difference between the detection differences at two continuous time. Since thegas leakage detection method of the gas device determines whether gas leaks or not based on the difference between the detection differences at two continuous time, gas leakage can be detected promptly by the method. The gas device can promptly detect whether the gas device leaks to avoid safety accidents.

The invention discloses a remote self-powered pipe fluid parameter monitoring terminal, and the terminal comprises a fluid power generation device and an energy storage monitoring device. The energy storage monitoring device comprises an intelligent control panel and a rechargeable battery. The intelligent control panel comprises a microcontroller, a wireless communication module, and a composite sensor. The terminal converts fluid energy into electric energy through the fluid power generation device, stores the electric energy in the rechargeable battery, and achieves the technical effects of self-power and energy storage. Through a WIFI module or a GPRS module, the terminal achieves a technical effect of wireless remote transmission. The terminal analyzes the flowing speed of fluid through the microcontroller, collects the temperature and pressure information of the fluid through the composite sensor, achieves a technical effect of monitoring the parameters of pipe fluid, saves a fluid monitoring module, enables the structure to be more simple, is low in cost, and is smaller in size.

The invention discloses a storage method of white spirit. The method is characterized by comprising the specific steps: a. preparing materials including 70-80% of fresh distiller's grains, 9-12% of glutinous rice powder, 1-2% of starter and 10-16% of flour; b. adding 10 kg of water in 100 kg of fresh distiller's grains, adding glutinous rice powder, starter and flour, and stirring evenly into paste; c. smearing the paste according to a certain thickness evenly on the outer surface of the jar filled with white sprit; and d. drying in the shade, and storing the jar in warehouse. The coating has similar effect as pit mud in fermentation; meanwhile the coating has effects of insulating in winter, and cooling in summer, so as to achieve the same effect as cellaring in natural cave or underground pit, and find jar leaks timely.

The invention relates to a signal sensing medium, especially relates to a large dam safety sensing optical cable for real time monitoring large dam concrete solidification and large dam leakage status and elongating service life of the invented object. A filler layer, an intensifying sleeve, and a protective sleeve are wrapped on the sensing optical fibre sequentially. Two conducting wires are disposed in the filler layer. The invented safety sensing optical cable can not only real time monitor large dam concrete solidification status during large dam construction course, but also discover large dam leakage, so that flood damage is avoided, national possessions and mass safety are guaranteed, and the service life of the invented object is elongated.

The invention discloses a continuous feeding system for the polymerization of carbon fiber precursors, belonging to the technical field of the production of carbon fibers. The continuous feeding system comprises a dimethyl sulfoxide storage tank, an acrylonitrile storage tank, a plurality of monomer storage tanks, an initiator storage tank, pumps, mass flow meters, regulating valves, a static mixer and a mixed liquid storage tank, wherein the dimethyl sulfoxide storage tank, the acrylonitrile storage tank, the monomer storage tanks and the initiator storage tank are independently connected with the pumps through independent pipelines; the pumps are respectively and sequentially connected with the mass flow meters and the regulating valves; each pipe connected with the regulating valve is communicated with the static mixer; and the static mixer is communicated with the mixed liquid storage tank through the pipeline. According to the continuous feeding system, each raw material storage tank is connected with the pump, respectively, the mass flow meters and the regulating valves are sequentially and respectively connected to the pipelines so as to independently and precisely control the feeding quantity of each storage tank, so that the real-time and continuous feeding of raw materials of different formulae can be realized; and meanwhile, the continuous product can be realized, so that the production efficiency is substantially improved, and the product quality is stable.

The invention discloses a leakage locating method based on the Internet of Things and a hydraulic model. The method is characterized in that the Internet of Things technology is adopted to monitor a pipe network in real time, and through pipe network model analysis, cooperation with valve operation in the pipe network and combination with the influence of night flow and pressure change before and after operation on the flow in the pipe network, accurate positioning and leakage amount determination of the leakage of pipe network are realized. Compared with the prior art, the method has the advantages of small equipment installation number, simple operation, repeated calculation and analysis by model software in positioning, no need for a large amount of manpower and the like, greatly shortens the sensing time of a leakage point, enhances the active leakage detection capability, and has a good engineering application prospect under the condition that a current leakage rate is relatively high.

The invention discloses a monitoring point arrangement method for underground space gas explosion risk prevention and control. An effective monitoring point laying strategy is constructed in combination with the total system risk value, the investment reasonability of monitoring point laying and the system risk control rate; the maximum benefit value can be obtained through optimization, fund investment can be saved, the maximum detection efficiency can be obtained, the gas pipeline leakage situation can be found in time, secondary disasters caused by gas leakage are avoided, and the method plays an important role in guaranteeing safe operation of urban gas. On the basis of a traditional risk calculation method, the sensor prediction effect is originally introduced into explosion risk calculation of the adjacent underground spaces, and all the adjacent underground spaces within the gas pipeline leakage influence range serve as a whole to calculate the total risk value of the system.

The invention provides a system and a method for remote monitoring of a long-distance conveying pipeline. The system comprises a detection module, a data transmission module and a monitoring platform;wherein the data transmission module comprises a ground terminal, an IoT (Internet of Things) constellation consisting of a plurality of IoT satellites, and a ground center; the detection module is used for acquiring a state parameter of a monitored conveying pipeline, and transmitting the state parameter to the ground terminal; the ground terminal is used for receiving the state parameter, and transmitting the state parameter to the IoT satellites; the IoT satellites are used for receiving and storing the state parameter, and transmitting the state parameter to the ground center when runningto a position over the ground center; the ground center is used for transmitting the state parameter to the monitoring platform, and the monitoring platform is used for judging whether a leakage condition occurs on the monitored conveying pipeline according to the state parameter. The system and the method of the invention are capable of achieving remote monitoring of the long-distance conveyingpipeline.

The invention relates to an SF6 gas concentration monitoring system and an SF6 gas concentration monitoring method. The system comprises multiple data transmitters which are arranged at multiple monitored positions in a switch room of an intelligent substation and used for measuring the SF6 concentration and O2 concentration at each monitored position and the temperature and humidity inside the switch room of the intelligent substation, an alarm transmitter which is used for receiving an alarm command of a master control module, driving alarm equipment to raise the alarm and driving a ventilation device to ventilate the switch room of the intelligent substation, a display module which is used for providing an interactive interface capable of setting the system parameters, displaying the SF6 concentration and O2 concentration at each monitored position and the temperature and humidity inside the switch room of the intelligent substation and displaying the historical curve of SF6 concentration, and the master control module which is used for processing the SF6 concentration and O2 concentration at each monitored position and the temperature and humidity inside the switch room of the intelligent substation uploaded by the multiple transmitters and sending an alarm command.

The invention provides a power generation system capable of recovering the waste heat of a rectifying tower air cooler and belongs to the field of waste heat power generation. Tower top oil gas rectified by a rectifying tower goes into a heat exchanger for heat exchange, and returns to a return tank after being cooled; hot water after heat exchange in the heat exchanger is fed into a steam pocket and flashed into steam by a flash evaporator, the steam is conveyed to a generator set via a pipeline to apply work so as to generate power, and then the cooled steam is returned to a hot water circulating pump via a pipeline and goes into the heat exchanger for circulation. Affluent low-temperature heat at the tower top is utilized; the tower top oil gas goes into the heat exchanger to exchange heat with hot water and returns to the return tank after being cooled, and the outage of the material air cooler is realized. The heated steam drives the generator set to apply work to generate power, and the utilization of the low-temperature heat is realized at last.

The invention discloses an engine test-driving platform gas supply system, which belongs to the technical field of engines. The engine test-driving platform gas supply system comprises a buffer tank 1, a compressor unit and a buffer tank 2, wherein the buffer tank 1 is connected with a natural gas pipeline network, the compressor unit connects the buffer tank 1 and the buffer tank 2, the compressor unit is connected with a circulating water refrigeration unit, the buffer tank 2 is connected to a pressure regulating device, and the pressure regulating device supplies gas to a production workshop through a double-wall pipe. The engine test-driving platform gas supply system solves the problem of engine test-driving platform gas supply since the gas needed by the marine engine test-driving platform can be supplied by the natural gas pipeline network directly, and special LNG storage tanks and other equipment are not needed for storage, transportation, temperature reduction and the like. Thereby reducing the test procedures and test cost.

The invention provides a thermal infrared gas leakage detection method, device and system based on YOLOV5, and the method comprises the steps: obtaining an infrared image of a target object which is any scene where gas leakage may occur; the infrared image is input into an image detection model, a marked infrared image is obtained, the marked infrared image is an infrared image marking the position of the leaked gas, and the image detection model is trained through machine learning by using a training data set; each group of training data in the training data set comprises a historical infrared image and a historical infrared image marking a gas leakage position; and determining whether the target object has gas leakage or not according to the marked infrared image. According to the method, the problem of low accuracy of gas leakage detection in the prior art is solved, in addition, the infrared image of the target object can be obtained frame by frame from the monitoring video of the target object, real-time detection of gas leakage of the target object is achieved, it is ensured that gas leakage is found in time, and safety is improved.

The invention discloses an intelligent unmanned ship fire extinguishing system and a fire extinguishing method. Fire disasters are discovered through fire detection equipment arranged at each subareaof each deck layer. A main controller is used for intelligently controlling an electromagnetic valve, a pressure adjusting device and a deck layer controller to release carbon dioxide gas in carbon dioxide storage equipment to a fire zone through a delivery pipeline for fire extinguishing, and a pressure gauge, a thermometer and a carbon dioxide concentration sensor are used for monitoring the state of the carbon dioxide gas in real time. According to the fire extinguishing system, the carbon dioxide is used as fire extinguishing agents, and the fire extinguishing system is simple in structure, good in fire extinguishing effect, and high in reliability and intelligence, and facilitates supervision and monitoring; the problems that an in an existing ship fire preventing and extinguishing technology is complex in structure, limited in fire extinguishing effect and low in reliability, and is prone to be affected by external factors are solved.

The invention relates to a method suitable for stable operation of a leather bag type energy accumulator. The method comprises the following steps that (1) according to the design requirements of a system, the lowest working pressure and the highest working pressure of the system and the capacity of the energy accumulator are determined; (2) according to the actual situation of a site and verification comparison, the capacity (whether the capacity needs to be increased) of the energy accumulator is mainly determined; (3) according to the system flow and the detected actual working pressure, the basic inflation pressure of the leather bag type energy accumulator is determined; (4) according to different use conditions of the leather bag type energy accumulator, the final inflation pressureof the leather bag type energy accumulator is determined; (5) by detecting the actual inflation pressure of the energy accumulator, the nitrogen pressure needing to be supplemented is determined; (6)nitrogen filling operation is carried out on the energy accumulator; and (7) the system stably operates and waits for the next detection.

The invention discloses a sulfur hexafluoride gas supplementing system and method. By the adoption of the sulfur hexafluoride gas supplementing system and method, a gas inlet and a gas charging port are more convenient to use; layout and fixation in a shell are more reasonable and reliable by means of a battery protective assembly frame, an electromagnetic valve assembly frame and a pressure sensor assembly frame; vacuumizing operation can be conducted, remote control is achieved beneficially, and damage is avoided. A gas inflow rapid plug and a charging rapid plug in the sulfur hexafluoride gas supplementing system are arranged on the surface, provided with a displayer, of the shell. The shell comprises an upper shell body and a lower shell body which are mutually buckled. The displayer is installed on the upper shell body. A gas exhaust pipeline is connected with a vacuumizing pipeline. A vacuum pipeline electromagnetic valve, a vacuum gauge and a vacuum pump are installed on the vacuumizing pipeline. A controller is further arranged in the shell. The controller is electrically connected with the electromagnetic valve, the displayer, the vacuum pump, a pressure sensor and a temperature sensor. The controller is connected with a remote mobile phone and a master control room through a wireless communication module.

The invention provides a novel reliable tunnel foam spray valve group. The novel reliable tunnel foam spray valve group structurally comprises two fire-fighting signal butterfly valves arranged at intervals, wherein a mixed alarm structure is arranged between the two fire-fighting signal butterfly valves and comprises a groove joint, a diaphragm type deluge alarm valve, a proportional mixer and a reducing tee joint; the diaphragm type deluge alarm valve is arranged at the upper end of the groove joint; the proportional mixer is arranged at the upper end of the diaphragm type deluge alarm valve and is fixedly connected with the diaphragm type deluge alarm valve in a flange sealing manner; the reducing tee joint is arranged at the upper end of the proportional mixer; a water drainage pipe is connected to one side of the reducing tee joint; an alarm pipeline is arranged on the diaphragm type deluge alarm valve; the end part of the alarm pipeline is connected with the water drainage pipe; a pipeline water leakage detection device is arranged at the bottom of the alarm pipeline; a pressure switch and a hydraulic alarm bell are arranged at the top of the alarm pipeline; and the pipeline water leakage detection device and a foam liquid leakage detection device are arranged in a tunnel foam spray valve. According to the novel reliable tunnel foam spray valve group, pipeline water leakage and foam liquid leakage can be effectively found in time, and unnecessary loss is prevented.

The invention discloses a cable cabin penetration sealing device for FSRU, and aims at providing the cable cabin penetration sealing device which can conveniently allow an installing person to inspectwhether or not the installed cable cabin penetration sealing device can normally operated and can timely discover the leakage problem of the cable cabin penetration sealing device for the FSRU. The device comprises a liquid cargo cabin joint, an intermediate assembly, a lower cavity assembly, an upper cavity assembly and a power cable, wherein the intermediate assembly comprises a middle sealingsleeve, an upper cable joint and a lower cable joint which are provided with openings at both upper and lower ends, the lower cavity assembly lower sealing sleeves with openings formed in the two ends, the upper end of the lower sealing sleeve is in sealed connection with the lower end of the intermediate sealing sleeve, the lower end of the lower sealing sleeve is in sealed connection with a portof the liquid cargo cabin joint, the upper cavity assembly comprises an upper protecting sleeve with openings formed in both upper and lower ends, the lower end of the upper protecting sleeve is connected with the upper end of the intermediate sealing sleeve, and the power cable comprises a cable out of the cabin, a cable in the cabin and a connecting cable which is located in the intermediate cavity.