270results about How to "Pressure real-time monitoring" patented technology

The invention provides a high-pressure multi-phase jet-flow cutting performance test system and a high-pressure multi-phase jet-flow cutting performance test method. The test system comprises a high-pressure water supply system, a high-pressure air supply system, an air-liquid mixing device, a test platform and a test monitoring system. By utilizing the high-pressure water supply system, the high-pressure air supply system and the air-liquid mixing device, a high-pressure water jet flow or a high-pressure air-liquid two-phase jet flow can be formed, and the pressure and air content of the jet flow can be controlled; by utilizing the test platform and the test monitoring system, the impact force and the erosion damage capacity of the high-pressure jet flow can be tested. By utilizing the high-pressure multi-phase jet-flow cutting performance test system, the high-pressure water jet flow or air-liquid two-phase jet flow impact test of parameters including different pressure, air contents, spray nozzle diameter, target distance and the like under a submergence or non-submergence condition can be carried out, important significance for analyzing a relation between various jet-flow erosion rock breaking properties and characteristic parameters and optimizing a hydraulic slot unloading anti-reflection technology can be realized; moreover, the high-pressure multi-phase jet-flow cutting performance test system is high in practicability, simple in structure, convenient to operate, safe and reliable.

The invention discloses an anticorrosive coating high-temperature and high-pressure resistant performance evaluation testing device and testing method, and belongs to the technical field of metal anticorrosive coating performance detection. An experiment device mainly comprises a heating system, a temperature control system, a pressurization system, a pressure measurement system, a high-pressure valve and a pipeline. The testing method mainly comprises the following steps: putting a to-be-inspected coating specimen into a testing barrel, then sealing a testing barrel cap, and heating and pressurizing the testing barrel by a pressurization pump and the heating system; keeping the temperature and pressure according to the experiment requirement after the temperature and pressure in the barrel reach a stipulated condition until the complete of the experiment; and finally, taking out the specimen, and inspecting the variation of each performance of the coating. The anticorrosive coating high-temperature and high-pressure resistant performance evaluation testing device and testing method can truly simulate the high-temperature and high-pressure environments when the anticorrosive coating is applied in oil and gas exploitation process, and provide a novel method and basis for accurately and efficiently evaluating the high-temperature and high-pressure performances in a laboratory.

The invention relates to a management system combining secondary water supply with DMA leakage loss management. Data of a GIS system, SCADA system, business charge system and the like can be integrated for comprehensively displaying the secondary water supply and DMA production and sale differences. Functions include the secondary water supply and DMA partition overview, DMA community production and sale difference analysis, secondary water supply management of a DMA community and abnormal alarming of water pressure and water quality. The provided management system combining the secondary water supply with the DMA leakage loss management overcomes the defect that existing secondary water supply management and DMA leakage loss management are both functionally separated and are independent;management functions of the two parts are organically combined, a flow monitoring value in the secondary water supply is used in third-level analysis of the DMA community, and a pressure monitoring value in the secondary water supply is used in evaluation of DMA community leakage loss analysis. Under the condition of satisfying normal water use of the community, the pipe network leakage loss rateof the community is gradually decreased.

The invention relates to a combustion gas safety intelligent prevention system. The system comprises an intelligent control system, a combustible gas monitoring system and a remote control system, theintelligent control system is formed by a combustion gas channel, an electromagnetic solenoid switch valve, an intelligent chip, wireless and wired modules and gas pressure, a control button and a flow sensor, the combustible gas monitoring system is formed by an intelligent chip, wireless and wired modules, a combustible gas sensor and an acoustic-optical alarm, the remote control system is formed by a cloud platform, a mobile phone APP and an intelligent background, the intelligent chip monitors the pressure and flow in a combustion gas pipeline and leakage of a combustion gas environment in real time through a pressure sensor, the flow sensor and the combustible gas sensor, a user can see alarm information and check the state of equipment through the mobile phone APP or the intelligentbackground and can remotely control the solenoid switch valve to open or close the combustion gas channel, the intelligent control system has GPRS positioning, and the function of the solenoid switchvalve or a child lock function is switched on and switched off regularly.

The invention discloses a device simulating carbon dioxide (CO2) pipeline transport and leakage. The device simulating carbon dioxide (CO2) pipeline transport and leakage comprises a CO2 circulating pipeline, an air supplying bottle, a heating belt and a leakage nozzle. The air supplying bottle is communicated with the CO2 circulating pipeline through a valve. The air supplying bottle winds on the heating belt on the CO2 circulating pipeline and is arranged on a pipeline wall of the CO2 circulating pipeline and is communicated with an opening and closing leakage nozzle of the inner portion. A circulating pump and a pore plate flow meter are in series connection on the CO2 circulating pipeline. The circulating pump and a pore plate flow meter are connected with an air exhaust valve. A pressure sensor used for monitoring the inner portion pressure of the CO2circulating pipeline and a temperature sensor used for monitoring the inner portion temperature of the CO2 circulating pipeline are further arranged on the CO2 circulating pipeline. According to the device simulating carbon dioxide (CO2) pipeline transport and leakage, leakage condition of flowing state in the pipeline can be simulated.

The invention relates to a micro-thrust measuring device with on-line calibration and locking functions. The micro-thrust measuring device is used for the parameter testing of the ground long-life test of a Hall effect thruster. In order to measure the real-time thrust value of the Hall effect thruster under a plurality of working conditions in the long-life test process of the Hall effect thruster, a thruster to be tested is installed on a movable frame; the movable frame swings with low amplitude under the action of the thrust of the Hall thruster; the displacement sensor of an electromagnetic feedback assembly performs detection; swing displacement signals are inputted into a PID feedback control circuit; and an electromagnetic feedback force is in linear relation with coil current outputted by the PID circuit; the static characteristic of a thrust frame is calibrated through a standard mass weight in advance, so that the magnitude of the thrust can be obtained. According to the device of the invention, the electromagnetic feedback force method is adopted to carry out multi-times and multi-working-condition real-time on-line measurement on the Hall effect thruster; an on-line calibration and locking device is adopted to lock and unlock the micro-thrust measuring device a plurality of times, so that the static characteristic of the micro-thrust measuring device is obtained inreal time, and the accuracy and reliability of a thrust test are ensured.

The present invention provides a battery management circuit applied to a battery pack composed of N battery cell elements, wherein N is a positive integer larger than or equal to 1. The battery management circuit comprises a plurality of pressure sensors and a main control module. The pressure sensors are respectively arranged inside each battery cell and / or between two adjacent battery cells and are used for detecting a first pressure inside each battery cell and / or a second pressure between two adjacent battery cells. The main control module is respectively connected with each pressure sensor and is used for comparing a first predetermined pressure threshold value with the pressure value of each first pressure and / or comparing a second predetermined pressure threshold value with the pressure value of each second pressure, and then independently controlling the on / off state of a circuit corresponding to each battery cell element based on comparison results. According to the technical scheme of the invention, when the pressure between two adjacent battery cells is increased to reach a safety pressure value, the circuit of a battery cell element corresponding to an abnormal battery cell is disconnected. Therefore, the safety of the battery pack is improved, and the service life of the battery pack is prolonged.

The invention provides a device and a method for testing compressive strength of a packaging carton. The lower part of a sliding drive is connected with a guide rail; a sliding plate matched with theguide rail is arranged on the guide rail; a plurality of hydraulic cylinders are arranged below the sliding plate; the lower parts of the hydraulic cylinders are connected with a pressing plate; telescopic plates are arranged at the two ends of the pressing plate; a plurality of pressure sensors are arranged on the outer side of the pressing plate; a motor is arranged at the bottom of a device body; the upper part of the motor is connected with a rotating disk; sliding rails are arranged on the two sides of the rotating disk; and a telescopic device, a positioning plate and a clamping block which are cooperatively used with the sliding plate are arranged on the sliding rail. The device and the method have the following beneficial effects: the rotating disk can aim at multi-angle detectionon the compressive strength of the packaging carton, the positioning plate ensures that the carton is not liable to move, the position of the pressing plate is adjusted through the sliding plate, thetelescopic plates at the two ends of the pressing plate are enlarged when the carton with large size is detected, the hydraulic cylinders provide lower pressure, the pressure sensors are arranged on the pressing plate, the pressing plate is monitored in real time to apply pressure, the carton is stressed uniformly, and the test device can accurately detect the compressive strength of the carton.

The invention discloses a vertical combustion characteristic experiment device capable of controlling gas environments and side wall structures, and belongs to the technical field of experiment teaching or scientific research apparatus. The vertical combustion characteristic experiment device capable of controlling gas environments and side wall structures comprises an experiment table, an analysis control cabinet, a combustible gas bomb group, and a vacuum pump; the experimental table comprises a combustion chamber, a fixing device of variable side wall structures, a gas homogenizing device,a hot flow sensor, a linear ignition device, and a flue gas collecting device; the analysis control cabinet comprises an operation panel, a gas mixing regulating and controlling system, a gas pressureregulating and controlling system, a hot flow data acquisition device, a flue gas toxicity analysis device, a computer host, a computer display, a mouse, and a keyboard; the operation panel comprisesa power supply switch button, a sudden stop button, a measuring starting button, and an igniting button. The vertical combustion characteristic experiment device is used for measuring of characteristic parameters of vertical arranged combustible matters at different gas environments, under different side wall structure conditions, and is mainly used in fire-fighting teaching and scientific research.

The invention relates to a control device for phases in a wellbore of a supercritical carbon dioxide drilled well, which comprises a main circulation loop and a control system. The main circulation loop is formed by sequentially connecting a CO2 storage tank, a plunger pump, a heat exchange device, a vertical tube, a drill stem, a bit, the wellbore, a wellhead backpressure control system, a rotary separator and a refrigerating device through pipelines. The control system is electrically connected with a high-pressure gas cylinder, an electromagnetic valve, the heat exchange device, pressure sensors, temperature sensors and mass flow meters through an industrial personal computer. One pressure sensor, one temperature sensor and one mass flow meter are installed at each of an inlet and an outlet of the wellbore to monitor temperature and pressure of carbon dioxide drill fluid at a wellhead in real time. A software system is controlled by the industrial personal computer to send out control signals to control and adjust the wellhead backpressure control system and the heat exchange device in real time, the pressure and the pressure of the supercritical carbon dioxide drill fluid at the downhole are recalculated until the supercritical state judgment conditions are met, and accordingly the carbon dioxide drill fluid at the downhole can be constantly maintained at the supercriticalstate.

The invention discloses a novel medicine oxygen pressure cabin realizing automatic control. The novel medicine oxygen pressure cabin comprises a cabin body, an oxygen supply system, an oxygen exhaust system, a detection system, an operation control and display platform, an electrical system, a control system and a humidifying system, wherein the control system is electrically connected with the oxygen supply system, the oxygen exhaust system, the detection system, the electrical system and the humidifying system and controls the oxygen supply system, the oxygen exhaust system and the humidifying system to perform oxygen supply, oxygen exhaust or humidifying operation on the cabin body through the operation control and display platform, so that cabin washing, pressure raising, pressure maintaining and pressure reduction can be performed on the cabin body during the whole treatment process. The medical oxygen pressure cabin is more intelligent and humanized and has the safety reaching a higher level by monitoring pressure, temperature and oxygen concentration in the cabin body and being matched with corresponding instruments for temperature adjustment, voice prompt and in-cabin monitoring as well as an alarm, the operation difficulty and the labor intensity of workers are reduced greatly, and the medical oxygen pressure cabin has the characteristics of being easy to operate, safe, reliable, flexible, available to a high variable phase and the like.

The invention provides metal atomization pulverizing equipment with low satellite sphere content. The metal atomization pulverizing equipment comprises a metal feeding mechanism, an atomization device, an atomization tower and a powder separation device, wherein the metal feeding mechanism is connected with the atomization device; the atomization device is mounted at the top of the atomization tower; a main powder outlet is formed in the bottom of the atomization tower; the main powder outlet is communicated with the powder separation device; no less than three powder outlet holes are formed in the upper end or a sealing end of a side wall of the atomization tower; the powder outlet holes are formed in the periphery of an atomization powder output and coke collection region at the bottom of the atomization device; the powder outlet holes are connected with the powder separation device through a powder output pipeline. The metal atomization pulverizing equipment with the low satellite sphere content, provided by the invention, is simple in structure and convenient to use; metal atomization powder prepared by the equipment has uniform and small granularity, high spherical degree, good flowability and low satellite sphere content, and performance requirements on various types of metal powder in the market can be met; the equipment is low in manufacturing cost and is convenient forbatch production; urgent requirements on high-performance metal powder at home and abroad can be met.

The invention relates to a mortar vehicle for concrete and asphalt, comprising a bottom disc and upper components arranged on the bottom disc; the upper components comprise an assembly for weighing and charging dry powder, an assembly for measuring and charging asphalt, an assembly for measuring and charging water, an assembly for measuring and charging additives, an assembly for measuring and charging P emulsion, an assembly for a stirring main machine, an assembly for a mortar grouting plate, a power system and a control system; the two sides of a dry powder delivery screw machine in the assembly for weighing and charging dry powder are provided with a first asphalt storing tank and a second asphalt storing tank; the two sides below a dry powder storage bin are respectively provided with a third asphalt storing tank and a P emulsion storing tank in the assembly for measuring and charging P emulsion; three asphalt storing tanks are communicated to form an asphalt storing tank in the assembly for measuring and charging asphalt; and a water tank and a water pump in the assembly for measuring and charging water and an air reservoir in the power system are fixed on the bottom disc below the upper components. The mortar vehicle has the advantages of compact structure, ingenious layout, accurate measurement and wide application range and the like, can produce mortar with high modulus of elasticity and also can produce mortar with low modulus of elasticity.

The invention discloses an intelligent well underground data collecting system based on a high-temperature single-chip microcomputer. The intelligent well underground data collecting system is composed of an underground part and a ground part which are connected through a single-core steel armor cable. The underground part is composed of a sensor set and a data processing and transmitting circuit. The ground part is composed of a data receiver uploading circuit and a system host. 220V alternating current is remotely transmitted to the underground part to be supplied from the ground through the cable. The sensor set comprises a temperature sensor, a pressure sensor and a displacement sensor. Signals of the sensor set are converted into voltage signals after being conditioned, a simulation multiplexer HT506 is utilized for carrying out selective collection, the signals are converted through an A / D converter HT574 and then are transmitted to a microprocessor HT83C51, an HJ389 high-temperature pulse composite signal lone-line driver is adopted as a drive circuit to transmit the signals to the cable, an HJ388 pulse signal preprocessing module in the data receiver uploading circuit carries out signal conditioning on the transmitted underground signals, and the processed signals are transmitted to the microprocessor single-chip microcomputer and then transmitted to the host through an interface circuit MAX232. The pressure, the temperature and the valve displacement are monitored in real time, and long-term stable working under the high temperature environment of 175 DEG C can be achieved.

The invention relates to a fuel cell hydrogen supplying system for a backup power. The fuel cell hydrogen supplying system for the backup power comprises a main hydrogen supplying bottle component and a spare hydrogen bottle component, wherein the main hydrogen supplying bottle component and the spare hydrogen bottle component pass by ball valves, are connected with a differential pressure valve through high-pressure pressure relief valves respectively, and are connected with drain pipes through drain valves respectively; a P1 pressure sensor and a P2 pressure sensor are arranged on the high-pressure pressure relief valves in the main hydrogen supplying bottle component and the spare hydrogen bottle component respectively; the P1 pressure sensor and a P2 pressure sensor are connected with a controller respectively and are used for monitoring pressures of the two hydrogen bottles in real time and converting the pressures into hydrogen margins in real time through the controller; flame arresters for preventing back fire are arranged at the tail ends of the drain pipes; and safety ground interfaces for guiding static electricity generated in the draining process are formed on the drain pipes. The fuel cell hydrogen supplying system for the backup power can not only realize on-line switching to replace the hydrogen bottles, low-voltage safe hydrogen relief and air purge but also estimate the residual pressures of the hydrogen bottles more accurately.

The invention discloses a winding machine winding head structure for processing of polyester filament products. The winding machine winding head structure is mainly characterized in that an indexing motor is fixedly installed on a machine frame, a rotating disc is installed on an output shaft of the indexing motor, four second supporting columns are uniformly distributed on the front end surface of the rotating disc in the circumferential direction, a driving motor is installed on a shell, a friction roller is installed on an output shaft of the driving motor, moreover, the friction roller ispressed on chucks, a first supporting column is installed on the shell, moreover, a bearing is installed on the first supporting column, a groove roller is installed on the bearing on the first supporting column, a guide sleeve is installed in a mounting hole of the shell, moreover, the guide sleeve is installed on a guide column, the guide column is fixedly installed on the machine frame, an aircylinder is installed on the shell, and the tail end of a piston rod of the air cylinder is installed on the machine frame. According to the winding machine winding head structure, the structure is simple, the cost is low, through the four chucks, the working efficiency is improved, the pressure between the friction roller and the chucks is adjusted in real time by adopting an electric control proportional valve and a pressure sensor, so that the pressure is stable in the winding process, and winding forming is good, stable and reliable.

The invention relates to a sports bra with intelligent contraction, comprising a bra body having two cups and characterized in that a tension regulator is connected between two ends of the rear of the bra body, interlayers are arranged respectively below the two cups of the bra body, a pressure sensor is disposed in each interlayer, and center gore part of the bar body is detachably fitted with an intelligent control module; the intelligent control module comprises a power supply unit and a control unit that controls tensioning and loosening of the tension regulator, and the power supply unit is connected respectively with the control unit and the pressure sensor. The tension regulator comprises an elastic band, one end of the elastic band is fixedly connected with a retainer, the other end of the elastic band is connected to a rotary shaft, and two ends of the rotary shaft are disposed on a second retainer; the second retainer is fitted with a miniature motor, and a power output end of the miniature motor is connected with a spindle. The tension of the sports bra can be adjusted in an appropriate fashion, with both functionality and comfort ensured.

The invention provides a natural gas storage temperature, pressure and vibration monitoring system, and relates to a natural gas storage monitoring system. The system comprises a distributed optical fiber temperature measuring system, a quasi-distributed optical fiber pressure measuring system and a distributed optical fiber vibration testing system, wherein the distributed optical fiber temperature measuring system adopts a distributed optical fiber temperature measuring system based on an optical frequency domain reflection system (OFDR-DTS), and the distributed optical fiber temperature measuring system is composed of a high-precision temperature measuring optical transceiver, a monitoring optical cable and a connecting tail fiber E2000 / APC; and the quasi-distributed optical fiber pressure measuring system is composed of an optical fiber temperature and pressure demodulator, an optical fiber pressure sensor and a monitoring optical cable. The multi-parameter real-time dynamic monitoring for a temperature profile, pressure and vibration of a natural gas well (gas storage) is realized, the monitoring system can be applied to different well types such as a gas injection well, an observation well, a vertical production well and a horizontal production well, and an evaluation basis can be provided for downhole fluid properties, a gas-liquid interface, an injection-production profile and wellbore integrity.

The invention discloses a well drilling pressure control facility and operation method of an ultra-deep well. The well drilling pressure control facility comprises a mud input pipeline, a first mud reversing out pipeline, a second mud reversing out pipeline, a kill line, a back pressure pipeline, a throttle pipeline, and a well control device; the operation method comprises the steps that a normaldrilling mode is conducted, the normal drilling mode is converted to a single root mode, the normal drilling mode is converted to a drilling starting mode, a drilling downward mode and a valve element changing mode; and control equipment eliminates a backpressure pump and other facilities, a throttle pipeline control device is simplified, the facility cost is lowered, the on-site construction process is simplified, and the stress control aspect is safer and more efficient. The well drilling pressure control facility and operation method can decrease the degree of well leakage, the difficultyof plugging is reduced, Chinese oil and gas standards are met, and the safe drilling purpose is achieved.

The invention relates to a valve detection system and testing stand and relates to the technical field of valve detection. The valve detection system is suitable for detecting strength and airtightness of a to-be-detected valve. The valve detection system comprises a sealing tool used for sealing the to-be-detected valve, an air delivering system, a test chamber and a liquid delivering system, wherein the sealing tool has a delivering hole communicated with an end portion of the to-be-detected valve, the air delivering system and the delivering hole are selectively communicated so as to deliver gases for the to-be-detected valve, the test chamber is configured to accommodate the to-be-detected valve to test airtightness of the to-be-detected valve, the test chamber is provided with an opening for allowing the to-be-detected valve to enter or leave the test chamber, and the liquid delivering system and the delivering hole are selectively communicated so as to deliver liquid for the to-be-detected valve to test strength of the to-be-detected valve. The valve detection system is advantaged in that the structure is simple and compact, and strength and sealing performance of the to-be-detected valve can be tested.

The invention discloses an intelligent fire extinguisher management system. The intelligent fire extinguisher management system comprises a management system body, wherein the management system body is provided with a positioning terminal, the positioning terminal is electrically connected with a data acquisition module, a data storage module and a data transmission module, the data acquisition module is electrically connected with a GPS positioning module, a pressure acquisition module and a monitoring module, and the pressure acquisition module is electrically connected with a temperature sensor, a pressure sensor and a barometric sensor. The intelligent fire extinguisher management system has the advantages that the positioning terminal is arranged, the inner portion of the positioningterminal is provided with a data acquisition device, the inner portion of the data acquisition device is provided with the GPS positioning module, the pressure acquisition module and the monitoring module, the temperature and pressure of a fire extinguisher can be monitored in real time, the fire extinguisher is positioned, detected and photographed by a camera in the monitoring module, the inspection effect is good, the accuracy is high, and compared with traditional manual inspection, the inspection safety is higher.

The invention provides a detection alarm device for fire fighting hydraulic pressure, and belongs to the technical field of fire fighting engineering. The device comprises a plurality of groups of pressure sensors, pressure detection modules and pressure alarm control units; and signal output ends of the pressure sensors are connected with signal input ends of the pressure detection modules, communication ends of the pressure detection modules are connected with communication ends of the pressure alarm control units by two buses or wireless communication. The device can monitor the fire fighting hydraulic pressure in real time, and be connected to the prior urban fire control remote monitoring alarm system or building fire automatic alarm system for alarm by an alarm host. Fire fighting persons on duty can know pressures of monitoring points of the fire fighting water systems of all units in time, so that the normal operation of the fire fighting water systems is ensured, and the fire damage due to insufficient fire fighting water is avoided.

The invention relates to the technical field of layered polymer injection wells, and particularly relates to a preset cable directly controlled type electronic-control layered polymer injection technique pipe and a polymer injection method. The technique pipe comprises a casing, wherein an oil tube is arranged inside the casing; an annulus between the casing and the oil tube is divided into different layers by a plurality of cable-passing well-washable packers; a steel tube single-core cable penetrates through the cable-passing well-washable packers; a flow direct reading type underground electronic-control polymer injection device is arranged between each two adjacent packers; adjustment of injection rate of the flow direct reading type underground electronic-control polymer injection devices is controlled by a ground controller; and two pressure sensors and an electromagnetic flowmeter are arranged inside each flow direct reading type underground electronic-control polymer injection device. By the polymer injection technique pipe and the polymer injection method which are provided by the invention, a ground control device can supply power for the flow direct reading type underground electronic-control polymer injection devices and control communication thereof through the steel tube single-core cable, interactive monitoring between the ground and the underground can be established, and therefore, real-time monitoring of tripping-in instruments, flow ground direct reading, direct control and pressures in front of a mouth and at the rear of the mouth is not required in a testing process.

The invention discloses a positive-pressure conveying system device which comprises a sending tank and a storehouse. The sending tank and the storehouse are connected through a pipeline. Butterfly valves are arranged at the position of a feeding port of the sending tank and the connecting position of the bottom of the sending tank and a discharging pipe. The positive-pressure conveying system device further comprises a tonnage and standard dual-purpose unpacking and material collecting device, an exhaust noise-reduction device, a negative-pressure accelerated feeding device, a material plug forming device, a pipeline cleaning device, a pipeline blocking removing device, and a mixing device with the ratio of fed materials and inlet gas capable of being adjusted. By means of the positive-pressure conveying system device, material conveying can be completed with high efficiency, pollution is reduced, energy consumption is reduced, time and labor are saved, and the production cost is reduced.

The invention discloses a safety real-time monitoring type escalator based on image analysis and relates to the field of escalator equipment. The safety real-time monitoring type escalator comprises handrails, a first pedal, hand straps, stairs and a second pedal; a plurality of emergency stop buttons are arranged on the handrails at equal intervals; an infrared curtain detector is arranged on one of the hand straps; pressure sensors are arranged on the first pedal, the second pedal, the hand straps and the stairs correspondingly; and a camera and a voice broadcaster both are electrically connected with an escalator controller. According to the safety real-time monitoring type escalator, by monitoring the pressure borne by the hand straps and the state of objects on the perimeter of a preset warning line, the pressure borne by the first pedal, the second pedal and the stairs and image information of escalator taking of passengers are monitored in real time and analyzed, safety accidents due to the facts that the passengers climb on the hand straps, or stretch heads, hands and the like out of the hand straps, or jump or run on the escalator, or take the escalator in the reverse direction, or overload occurs, or the passengers break into the escalator when the escalator is overhauled are effectively avoided, the operation state of the escalator is monitored in real time, and the safety of the passengers are protected.

The invention relates to a compound energy-saving type medical molecular sieve central oxygen generation and medical air compression integrated device, comprising a main air supply source, auxiliary air supply sources, and a standby air supply source for continuing to supply oxygen when the main air source and the auxiliary air sources stop at the same time, wherein the main air supply source, the auxiliary air supply sources and the standby air supply source share one air balance tank, one oxygen balance tank and one oxygen division pot with a voltage-sharing and flow-equalizing function, the auxiliary air supply sources are arranged beside the main air supply source side by side and perform auxiliary supplement air supply for the main air supply source, and the standby air supply source continues to supply oxygen when the main air supply source and the auxiliary air supply sources stop at the same.

The invention discloses a monitoring system for pressure, temperature and urine flow in the bladder, which comprises a catheter and a central controller; the sensing end of the catheter is provided with a pressure sensor and a temperature sensor, and the other end of the catheter is provided with a urine storage bag , the urine storage bag is provided with a urination controller and a urine flow monitor; the urination controller is provided with a one-way solenoid valve, and sends an opening signal to the one-way solenoid valve, the catheter starts to urinate, and sends After the signal is turned off, the urinary catheter stops urinating; the central controller includes a microcontroller, and the microcontroller is provided with a power module, a liquid crystal display module, and a sound alarm module, and also includes: a wireless communication module, connected to a monitoring terminal to realize Remote monitoring; connect to the local area network to realize remote monitoring in the hospital ward; the wireless communication module sends the received pressure and temperature data in the bladder to the monitoring terminal for comparison with the rated value, and the comparison result is greater than the rated value , send an activation signal to the alarm.

The invention provides a sterile bladder irrigator, which comprises a medical three-way valve, a urethral catheter, a liquid conveying tube and a drainage tube, wherein the urethral catheter, the liquid conveying tube and the drainage tube are connected with three connectors of the three-way valve; one connector of the three-way valve is an outer conical joint; the other two connectors of the three-way valve are inner conical connectors; the urethral catheter, the liquid conveying tube and the drainage tube are connected with the three connectors of the three-way valve through being tightly screwed via screw caps; the liquid conveying tube is used for feeding a flushing solution into the three-way valve from a liquid conveying bottle; the urethral catheter is used for feeding the flushing solution from the three-way valve into the bladder of a human body or guiding liquid in the bladder out of the human body; and the drainage tube is used for discharging out the solution from the urethral catheter. The urethral catheter, the liquid conveying tube and the drainage tube are connected with three connectors of the three-way valve through being tightly screwed via the screw caps, so that good sealing performance is guaranteed; in the whole operation process, the solution is not in contact with outside; the sterile operation is realized; the cleanness of the flushing solution is guaranteed; no fungal infection risk exists; and the use is safe and reliable.

The invention relates to a yielding anchor rod capable of monitoring the yielding amount in real-time, which comprises a main rod body, wherein a main anchor body is arranged on the front end of the main rod body, and is inserted into an insertion chamber at the front end of the main rod body; the main anchor body is connected with the main rod body through a spring; a pull rope is arranged on the main anchor body; one end of the pull rope stretches out of the main rod body and is connected with a displacement reading unit; the displacement reading unit is used for displaying the displacement amount of the pull rope. The yielding anchor rod is ingenious in design, compact in structure, large in anchor rod yielding amount, capable of monitoring the yielding amount of the anchor rod in real-time and timely judging the support quality, realizes a circulation support process of primary support-yielding support-re-reinforced support, and is good in support effect.