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

The invention discloses a simulation experiment device for carbon isotope analysis in a shale gas release process. The device comprises a reaction chamber, a temperature maintaining part, a vacuumizing part, a monitoring part, a filling part, a water injection part, a gas collecting part, a pressure balancing part and an adjusting component, the temperature maintaining component wraps the reactionchamber, the vacuumizing component, the monitoring component, the filling component, the water injection component, the gas collecting component and the pressure balancing component are connected with the reaction chamber, and the adjusting component fixes the reaction chamber and the pressure balancing component. With the adoption of the manner, an experiment can be carried out under a closed condition, the temperature required by each stage is maintained, and the pressure change is monitored; the fluid environment in the shale gas release process is simulated; the released shale gas can bestored in a sealed manner, and the released shale gas sample can be quantitatively extracted at any time; and the device is suitable for experiments of shale samples with small granularity, and can beused for experiments of various shale samples with various granularities.

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.

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.

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 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 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 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.