45results about How to "Monitor pressure changes" patented technology

The invention discloses a system for calibrating the leak rates of vacuum leak holes of different leak indication gases. The system comprises a helium mass spectrum leak detector, a standard container, an argon source, a vacuum leak hole to be calibrated, a leak indication gas source, a constant volume chamber, a vortex molecular pump and a turbine mechanical pump; the vortex molecular pump and the turbine mechanical pump are connected with the constant volume chamber and the standard container by pipelines in sequence; one end of the vacuum leak hole to be calibrated is connected with the leak indication gas source by a pipeline, the other end is connected between the standard container and the constant volume chamber, and the helium mass spectrum leak detector and the argon source are respectively connected to the connecting pipeline. Besides, the system can obtain a conversion relation between leak rates when different leak indication gas media are quickly measured using the helium mass spectrum leak detector, via the magnitude of the leak rate of the leak hole measured by a constant volume method and in combination with the leak rates, measured by the helium mass spectrum leak detector, of vacuum leak holes of different leak indication gas media. The system is reasonable in design, simple in structure and convenient to operate, and can be used for calibrating the leak rates of vacuum leak holes of different leak indication gases.

The invention discloses an oil reservoir water injection self-adaptive deep global regulation device and a construction method. The regulation device comprises agent dissolution and storage equipment and agent injection equipment which is connected with the agent dissolution and storage equipment through a connection pipeline. The agent dissolution and storage equipment comprises a cleaning and unchoking agent dissolution tank, a plurality of regulation agent dissolution tanks, an agent liquid mixer, an agent storage tank and a main liquid intake pipe. The agent injection equipment comprises a main liquid delivery pipe, a plunger pump installed on the main liquid delivery pipe, a liquid distributor connected with a liquid outlet of the main liquid delivery pipe, and a plurality of liquid injection pipes. The construction method includes the following steps that firstly, a well area to be regulated is determined; secondly, the equipment is placed in position and connected through the pipeline; thirdly, water is injected, and a pressure drop curve is tested before regulation; fourthly, cleaning and unchoking are conducted before regulation; fifthly, oil reservoir water injection self-adaptive deep global regulation is conducted on a target stratum. The oil reservoir water injection self-adaptive deep global regulation device is reasonable in design, convenient to install and lay, easy and convenient to operate, good in use effect and capable of effectively improving water displacing oil work efficiency and crude oil recovery efficiency.

The invention provides a pressure monitoring method for intelligent pressure pads, comprising the following steps: pressure sensors respectively sense pressure information and pressure change information of multiple positions of an intelligent pressure pad generated under pressure; the acquired pressure information and pressure change information are collected and transmitted through a flexible circuit board; and the pressure information and pressure change information are processed and analyzed. Due to the flexibility of the flexible circuit board, the pressure pad is allowed to bend to a certain extent as pressure is applied, and the bending performance of the intelligent pressure pad is not affected. The pressure change at each point of the pressure pad can be intelligently monitored, analyzed and output, and habitual postures, health risks and the like of users of the pressure pad can be acquired.

A miniature pressure and temp monitoring system for the internal environment of bronchus is composed of a trachea catheter, a miniature pressure and temp monitor consisting of miniature pressure probe and miniature temp probe, which are embedded in the wall of catheter and have surficial film on their front ends, a data acquisition device, a data processing device, and the electrically conductive lines in the wall of said catheter.

The invention discloses a puncture device for laparoscope operation capable of automatically warning, and belongs to a puncture device capable of automatically warning when an abdominal cavity puncture needle passes through the peritoneum for reminding an operator that the puncture needle passes through the peritoneum. A pair of chutes (1-1) are symmetrically formed in the inner wall of a puncture needle tube (1) relative to the axial line, the lower part in the puncture needle pipe is provided with a sensor plate (1-3), a pressure spring (1-2) is positioned on a pressure sensor (1-3-1) positioned in the center of the sensor plate, the outer surface of a puncture needle core (2) is symmetrically provided with a pair of slide rails (2-1) relative to the axial line, the puncture needle core is positioned in the puncture needle tube, the chutes and the slide rails are embedded, a pressure sensor, a signal converter (1-3-2) and a Bluetooth emitting module (1-3-3) which are in sequential serial connection are arranged on the sensor plate, and the signals are sent to a corresponding computer (3) through the Bluetooth emitting module.

The invention discloses a permanent pressure meter testing technique for a coal bed gas observation well, which comprises the following steps of: arranging one or more observation wells in a set distance around the coal bed gas well, putting a permanent pressure meter into the observation well to perform interference-free in situ test, and acquiring a critical desorption pressure value at the well point of the observation well and a time reaching the critical desorption pressure so as to acquire an expansion speed of a coal bed gas desorption expansion range. The pressure at the well point of the observation well is measured by analysis, and the pressure distribution around the coal bed gas well can be obtained. The reservoir parameter of an exploited coal bed of the coal bed gas well and the crack direction of a fractured well can be obtained by analyzing the test data of the observation well. The pressure change around the coal bed gas well can be conveniently monitored by arranging the observation well around the coal bed gas well and arranging the permanent electronic pressure meter in the coal bed gas well, the pressure distribution is visualized, the coal bed gas reservoir parameter in the coal bed gas well can be effectively and reliably obtained, and the data accuracy of coal bed gas exploitation is improved.

Provided is an apparatus for estimating an external temperature for monitoring a tire pressure. The apparatus includes a sensor transmitter configured to transmit stop time information which is obtained by measuring a stop time of a vehicle at certain intervals, by using wireless communication, and a sensor receiver configured to receive the stop time information through the wireless communication, and measure the external temperature by using the received stop time information.

The invention discloses a testing device and a testing method for an embedded-mounted check valve. The testing device comprises a high-pressure air cylinder, a decompression valve, a filter, a normally closed electromagnetic valve, a check valve mounting seat and a ball valve. The testing device further comprises an electric control cabinet and a pressure sensor. The pressure sensor is connected with the check valve mounting seat. The electric control cabinet is connected with the pressure sensor and the normally closed electromagnetic valve. The testing device can prevent various adverse effects such as power loss and pressure loss caused by check valve leakage in the field in which the check valve is used.

The invention discloses a connector for a vehicle pipeline and a vehicle crankcase ventilation pipeline with the connector for the vehicle pipeline. The connector for the vehicle pipeline comprises aconnector body and a center hole. The center hole penetrates through the connector body. The connector for the vehicle pipeline further comprises a support. The support is located in the middle section of the connector body. The support comprises a through hole in the middle and an outer extension portion surrounding the through hole. The through hole communicates with the center hole. The vehiclecrankcase ventilation pipeline comprises the connector for the vehicle pipeline and a pressure sensor. The pressure sensor is installed on the support. The connector for the vehicle pipeline and thepressure sensor can be installed in a matched manner. The vehicle crankcase ventilation pipeline with the connector for the vehicle pipeline can monitor the pressure change of mixed gas in the pipeline, and leakage is prevented.

There is disclosed a hydraulic system for cylinder lubrication of engine cylinders in large diesel engines, in particular marine engines, by injection of oil. The system is designed with injectors (13) and a lubricating apparatus (11) which includes a number of pump units (8). Each pump unit (8) is connected with an associated injector (13) via a connecting pipe (12). In the connecting pipe (12), between a pump unit and an associated system unit a leak detector (10) is provided, adapted for emitting a signal when the oil pressure in the connecting pipe (12) go under a predetermined level. Hereby is achieved a reliable, technically simple and cheap system for leak monitoring which enables continuous monitoring of leakage with running engine so as to ascertain if one or more injectors (13) are leaking.

The embodiment of the invention provides a time obtaining method and device, a mobile terminal and an earphone. On one aspect, the device receives the time obtaining information sent by the earphone connected to the mobile terminal, obtains current time according to the time obtaining information, converts the current time into time telling voice and outputs the time telling voice to the earphone, so that when listening to the music by inserting the earphone to the earphone interface of the mobile terminal, a user does not need to take out the mobile terminal from a bag or other places, open a display screen to see the time, close the display screen and return the mobile terminal to an original place, but directly hears the time telling voice from the earphone to obtain current time, the operation process being simple.

The invention discloses a pressure detection device and a microbial detection film system. The system comprises the pressure detection device, wherein the pressure detection device comprises a tube and a pressure detection element; the inside of the tube is provided with a displacement mechanism; one end of the tube is connected with an air outlet or a gas detection hole on a tank, the other end of the tube is connected with the measuring terminal of the pressure detection element; and the signal terminal of the pressure detection element is connected with the corresponding signal terminal ofa control device. The microbial detection film system with the pressure detection device of the invention can accurately and timely monitor the pressure change in the tank, ensure the correctness of the microbial detection result and avoid abnormal conditions such as the burst of the tank.

The invention discloses a high-precision ultrahigh-pressure liquid-phase simulation load accumulation error test platform, which comprises three parts, namely a test bench, a constant force executingmechanism and a position feedback mechanism. The two mechanisms are fixed through the test bench. The constant force executing mechanism is used for pushing a simulation plunger to move in the axial direction through a high-precision ultrahigh-pressure liquid phase pump. The simulation plunger is matched with a force sensor. The force sensor is used for detecting the pressure borne by the simulation plunger. In order to ensure that the simulation load is kept constant, a fine adjustment mechanism is designed for adjustment and control. The position feedback mechanism obtains the measured numerical value of the stroke of the simulation plunger through a grating sensor, extracts an accumulated error and feeds back the accumulated error to a liquid phase pump control system.

The invention discloses an ENT treatment table integrated self-cleaning system, comprising a main sniffer system and a self-cleaning system. The ENT treatment table integrated self-cleaning system of the invention can filter the sniffer system of the ENT treatment table. The filter can be automatically cleaned, and the resistance change of the filter can be monitored in real time. When the resistance loss caused by the filter reaches the set value, it means that the amount of dust deposited on the filter has reached the level that needs cleaning. At this time, the self-cleaning system can complete the cleaning process. The washing of the filter not only reduces the resistance loss caused by the dust accumulation of the filter, improves the working efficiency of the sniffer gun, but also ensures the cleaning of the entire cleaning system, and realizes inhalation, filtration, cleaning and disinfection during the use of the ENT examination and treatment table. Integration and automation of steps.

The invention relates to a high-strength self-sealing anti-explosion automobile wheel and a making method thereof. the crown-shaped part of the surface of the inner wall or the inner surface of the bottom of an automobile tyre is coated by a macromolecule self-sealing leakage-proof polymer glue layer, the thickness of the leakage-proof layer is not less than 3.5mm; the automobile wheel is filled with a gas medium which is inert gas. The automobile wheel provided by the invention can play the role of preventing leakage, noise and explosion, and ensures that an automobile is driven safely. The technology adapts to making of the high-strength self-sealing anti-explosion automobile wheel, and also adapts to the conversion of updating of a common automobile wheel into making of the high-strength self-sealing anti-explosion automobile wheel.

The invention belongs to the technical field of a forming device of rubber products and especially relates to an extruding forming device for a processing system of rubber products. The tail end of a screw rod is jacked against and connected with one end of a thrust bearing; the other end of the thrust bearing is axially connected with a dewatering device through a speed reducer; the dewatering device comprises a water outlet; and the water outlet radially downward penetrates through a guide port. The extruding forming device provided by the invention is used for solving the problem of the prior art that the product quality is influenced by the failure in timely discharging the wastewater generated by rubber products because the traditional non-dewatering type pressing machine has no dewatering function. The extruding forming device has the beneficial effects of wastewater discharging, capability of monitoring change in pressure in the chamber at any time, convenience in pollutant emission and capability of prolonging the service life of the screw rod.

The invention discloses an anti-seismic bracket early warning system and an early warning pull rod. Traction end parts located at the two ends of a supporting transverse beam are respectively articulated with a middle pull rod, a left pull rod, a right pull rod and a rear pull rod; one end of a jointed pipe of each pull rod is a swivel nut, and the other end of the jointed pipe is a supporting wall; side holes are symmetrically formed in the two ends of each jointed pipe, and thus, the structural body that the two ends of a jointed rod are connected to the swivel nut and the supporting wall isformed; the swivel nut is internally connected to a threaded rod; the two sides of the supporting wall are fixedly connected to sliding sleeves; sliding rods are respectively arranged in the slidingsleeves at the two sides in a sleeving manner; an inner sliding block is arranged in the jointed pipe in a sleeving pipe; the inner ends of the two side sliding rods are respectively fixed to the twosides of the inner sliding block; the outer ends of the two side sliding rods are respectively fixed to the two sides of an outer sliding block; a strong spring is connected between the inner slidingblock and the supporting wall; and a pressure sensor is arranged at the inner side of the supporting wall in a sleeving manner. The anti-seismic bracket early warning system can monitor the pressure change of each pressure part in real time through a control system, and even monitors the displacement change of each rod piece. When the variation range is greater than the set threshold value, a warning signal is sent out through a controller or a cloud monitoring system, and thus, an automatic early warning function can be provided.

The invention provides a pressure monitoring system for a blood component separator. The system includes a blood component separator (1), a controller (2) and a pressure monitoring device (3); and thepressure monitoring device (3) is provided with a pressure sensing transducer (13), the controller (2) is in electrical connection with the blood component separator (1) and the pressure sensing transducer (13) respectively, the pressure monitoring device (3) is in sealed connection with a blood collection pipeline, a fluid channel is formed in the pressure monitoring device (3), the fluid channel is in communication with the blood collection pipeline, and the pressure sensing transducer (13) collects pressure signals of the fluid channel and outputs the signals to the controller (2). According to the system, the pressure sensing transducer is used to collect the pressure signals of the fluid channel and output the signals to the controller, so that pressure change in the pipeline can beaccurately monitored in time, and the reliability of the pressure monitoring of the blood component separator is improved.

The invention discloses a chemical dry etching machine equipped with a pumping pipeline pressure monitoring device. The chemical dry etching machine comprises a craft room, an isolation valve, an automatic pressure controller and a dry pump which are connected in turn via a pumping pipeline. A digital pressure detector is arranged between the automatic pressure controller and the dry pump. The digital pressure detector is arranged at the external side of the pumping pipeline. The digital pressure detector is used for detecting change of pressure of the pumping pipeline. Multiple O-shaped circles are evenly distributed at the external side of the pumping pipeline. Change of pressure of the pumping pipeline can be monitored so that faults of a pre-APC assembly and the isolation valve of the pumping pipeline can be eliminated in real time, and leakage of the pumping pipeline can be prevented.

The invention relates to a device and a method for simulating volume fracturing of a horizontal well on a shale reservoir stratum; when crack propagation of the shale reservoir stratum is simulated, a valve at a liquid inlet of a supply source is set to be closed, and a fluid reservoir is communicated with a liquid inlet of a horizontal shaft by a pipe line; when the production process of the shale reservoir stratum is simulated, the fluid reservoir is communicated with the liquid inlet of the supply source by the pipe line, and the liquid inlet of the horizontal shaft is communicated with the atmosphere; a man-made fracture model is arranged at a bullet hole of the horizontal shaft; when the production process of the shale reservoir stratum is simulated, a gas tank is communicated with the liquid inlet of the supply source by a gas pipeline, and the liquid inlet of the horizontal shaft is communicated with the atmosphere. According to the invention, according to the similarity principle, the crack initiation and extending processes of the volume fracturing can be simulated, the density and the volume of a fracture network are determined, the effect of crack parameters on the fracturing capacity of the horizontal well on the shale reservoir stratum is researched, fracturing construction parameters and the crack parameters are optimized and a key problem of fracturing of the shale reservoir stratum is solved.

The invention provides a tunnel vertical settlement and arch wall pressure stress monitor and a cloud monitoring and early warning system. The monitor comprises a settlement sensing mechanism, a pressure stress sensing mechanism and a data processor used for transmitting signals collected by the settlement sensing mechanism and the pressure stress sensing mechanism. The settlement sensing mechanism comprises a left horizontal laser sensing instrument and a right horizontal laser sensing instrument which are horizontally arranged, and the pressure stress sensing mechanism comprises a stress sensor. The laser induction instruments are used for receiving laser induction instrument signals of the four monitors nearest to the monitor and judging the distances between the monitors and the monitors where the corresponding induction instruments are located and whether the corresponding monitors have angle deviation or not, and therefore whether vertical settlement happens to the tunnel or notis judged. Meanwhile, the internal pressure of the supporting layer and the rock-soil layer is sensed through the pressure stress sensing mechanism, so that the stress pressure change of the arch wallis monitored.

The invention relates to a sand filling model and particularly relates to a visual sintering-free flat plate sand filling model device and method. The device comprises a flat plate sand filling model, a model stamping device and a model fixing support, wherein the flat plate sand filling model comprises a flat plate model main body and a model upper cover plate; the model stamping device comprises a motor, a stamping rotating shaft, a control box, a stamping steel plate and a stamping device shelf; the model fixing support comprises a support and a model clamp, rotating shafts are arranged on the left and right sides of the upper end of the support, left and right ends of the model clamp are connected with rotating shafts, and the rotating shafts are connected with dip angle adjusting handles. In a simulation experiment, the device disclosed by the invention can be used for avoiding sintering and gluing operations, the model can be repeatedly used, practicability is high, and defects of the existing sand filling model are overcome.

The invention discloses an oil reservoir water injection self-adaptive deep global regulation device and a construction method. The regulation device comprises agent dissolution and storage equipment and agent injection equipment which is connected with the agent dissolution and storage equipment through a connection pipeline. The agent dissolution and storage equipment comprises a cleaning and unchoking agent dissolution tank, a plurality of regulation agent dissolution tanks, an agent liquid mixer, an agent storage tank and a main liquid intake pipe. The agent injection equipment comprises a main liquid delivery pipe, a plunger pump installed on the main liquid delivery pipe, a liquid distributor connected with a liquid outlet of the main liquid delivery pipe, and a plurality of liquid injection pipes. The construction method includes the following steps that firstly, a well area to be regulated is determined; secondly, the equipment is placed in position and connected through the pipeline; thirdly, water is injected, and a pressure drop curve is tested before regulation; fourthly, cleaning and unchoking are conducted before regulation; fifthly, oil reservoir water injection self-adaptive deep global regulation is conducted on a target stratum. The oil reservoir water injection self-adaptive deep global regulation device is reasonable in design, convenient to install and lay, easy and convenient to operate, good in use effect and capable of effectively improving water displacing oil work efficiency and crude oil recovery efficiency.

Disclosed is a triaxial test rock sample stripper for rocks. The triaxial test rock sample stripper is characterized in that a protection part comprises a base frame with two opening ends and a triaxial pressure chamber shelving layer arranged at the upper end of the base frame, and a top gasket is connected with the upper surface of the triaxial pressure chamber shelving layer through a support;a die pressing part comprises a die thread rod with one end penetrating the top gasket, a large rotary gear is meshed with a small rotary gear, the small rotary gear is sleeved in the upper end of thedie thread rod, a motor drives the large rotary gear to drive the small rotary gear to rotate, the small rotary gear rotates to drive the die thread rod to move vertically relate to the top gasket, and a force sensor controls the motor; a sample protection part comprises a rock-sample round die pipe, a circular grooved column, a pulley and a slide, and the slide is arranged in the base frame; a pulley track is arranged in the slide, upper and lower ends of rock-sample round die pipe, movably connected on the triaxial pressure chamber shelving layer are fixed in the round grooved column. The triaxial test rock sample stripper has the advantages that manual operation steps are reduced, and errors caused to the entire test process are avoided.

The invention relates to the technical field of oil exploitation, and discloses a visual model kettle for ultra-low gas permeation. The visual model kettle comprises a visual kettle body, wherein a gas inlet pipe is fixedly connected to one side of the visual kettle body. According to the visual model kettle for ultra-low gas permeation, needed rock is placed in the visual kettle body, two sets of one-way valves arranged on the gas inlet pipe are opened, one end of the gas inlet pipe is connected with an inert gas device, inert gas is sucked into the visual kettle body through work of a gas pump, the gas pressure intensity in the visual kettle body can be known through a pressure detector, and therefore oil in the rock can be effectively discharged out; and an oil pump is started, the oil is fed into an oil conveying pipe through a collecting pipe, impurities carried on the rock are effectively filtered out through a filtering plate in the collecting pipe, and therefore the purity of the oil is guaranteed. By means of the structure, the oil is effectively discharged out of the rock, and the oil extraction efficiency is improved; by arranging the model, the process of discharging the oil through the inert gas can be effectively simulated.