50 results about "Pressure recording" patented technology

A method and device are provided for simultaneously or near-simultaneously diagnosing and treating tension pneumothorax and/or hemothoraxA Veress-type needle portion includes a hollow needle for puncturing the chest wall over a blunt hollow probe biased by one or more springs to extend distally into the pleural cavity. Openings in the blunt hollow probe connect via a pathway to an automatic check valve, which permits the flow of air and/or fluid only in a proximal direction. Pressure from within the pleural cavity is transmitted to the interior surface of a pressure documenter. If pressure greater than atmospheric pressure is present in the pleural cavity, the pressure documenter will be automatically urged proximally to simultaneously allow air and/or fluid to escape from the pleural space through the device, thus treating the tension pneumothorax and/or hemothorax, as well as providing a stable indicator to positively document the diagnosis of increased pressure.

An electrode grid device is disclosed comprising a deformable envelope, further comprising non-polarizable electrodes and a pressure recording port. The device is designed to allow for monitoring of brain retraction pressure and local cortical electrical activity including DC potential, as well as to redistribute the force applied during retraction and thereby diminish the chance of focal brain injury during surgery. Retraction pressure recorded is equal over the full area of contact, providing a more meaningful measurement than simply at one point on the retractor. A means is disclosed for evacuation of air from the system to improve accuracy and fidelity of the pressure measurements. It is a further aspect of the device to allow for measurement of intracranial pressure, DC potential and EEG in epileptic and severe head trauma patients for management of edema and injury, respectively.

The invention discloses a hydrocarbon dynamics high pressure thermal simulation experiment method and the device for the rock sample, which belongs to the rock oil and natural gas earth chemical experiment research technology field. The method includes the sealing sample into the gold pipe, putting the gold pipe into the high pressure kettle, putting many high pressure kettle into one pyrolyzing oven, starting the water adding pressure and stabilized voltage system, the pyrolyzing oven, picking out one high-pressure kettle and cooling quickly in different temperature point, closing the pyrolyzing oven and water adding pressure and stabilized voltage system until the high-pressure kettle with sample is picked out, then opening the high-pressure kettle and analysis of the sample; the device is made up of the water adding pressure and stabilized voltage system, the heating system and the controlling system. The water adding pressure and stabilized voltage system includes the water tank, the high pressure water pump and the stabilized voltage valve. The heating system includes the pyrolyzing oven, many high-pressure kettles and circle fan. The controlling system includes the central computer, the pressure controller, the pressure recorder, the temperature controller and multi-way temperature detection recorder. The invention can be used in analysis of the kerogen or rock sample.

The invention provides a single-loop hydrofracturing in-situ stress measuring system simple to use and widely applicable, relates to measuring systems and particularly relates to modification of the single-loop hydrofracturing in-situ stress measuring system. The system comprising a high-pressure pump is structurally characterized in that a pressure sensor is provided beside the high-pressure pump, a pressure recorder corresponding to the pressure sensor is disposed under the high-pressure pump, the side of the high-pressure pump is provided with a borehole provided under a derrick, a drill pipe is disposed within the borehole and connected with the high-pressure pump, the lower end of the drill pipe is connected with a packer, a conversion switch is disposed between the drill pipe and the packer, and the middle of the packer is provided with a fracturing segment.

An implantable recyclable pulmonary vessel pressure sensor is characterized in that a group of nickel-titanium hyperelastic alloying metal wires is connected in an end-to-end manner to form a self-expanding oval support, a pressure sensor is arranged on any one of the nickel-titanium hyperelastic alloying metal wires of the self-expanding oval support, and a tail hook is arranged at one end of the self-expanding oval support. The self-expanding oval support with the pressure sensor reaches a lesion site through a press holding type delivery catheter, and after fixation is released, the pressure sensor is capable of sensing pressure signals of monitoring sites continuously; when a reader is implanted on the chest skin, real-time pressure signals and measured values can be monitored and displayed through a pressure sensing system in the reader, the reader can be connected to a pressure analyzer through a needle hole connection jack at the bottom end of the reader, the pressure signals can be printed in real time through the pressure analyzer, all pressure records in the reader are stored, and the self-expanding oval support can be recycled at any time through the tail hook. The implantable recyclable pulmonary vessel pressure sensor and a use method thereof have the advantages of simplicity in operation, small test result errors, no pain on patients, low cost, accurate results, wide application and continuous replacement of existing materials.

The embodiment of the invention discloses a pressure recorder which comprises a waterproof case. A pressure sensor, a collection unit, a storage chip, a power supply unit and a central processing unit are arranged in the case, and the central processing unit comprises a micro-control unit and a real-time clock, wherein the real-time clock is used for awaking the micro-control unit in a timing way through a monitoring circuit, and the power supply unit is used for receiving instructions from the awoken micro-control unit, and respectively supplying power to the collection unit and the storage chip. It is observed that the storage chip can be used for storing collected data without manual recording, therefore the pressure recorder is suitable for pressure measurement without anybody watching; however, after the micro-control unit is awoken, the collection unit, and the like can be supplied with the power, therefore each unit is in a operating state periodically or intermittently, and power consumption is reduced so as to ensure that the whole recorder can operate for a long time.

The present invention relates to devices and apparatus for detecting contact and optionally its duration and/or recording the level of pressure and/or its duration and/or recording the level of shear force and/or its duration. In particular, certain embodiments of the present invention relate to devices which comprise an element comprising a hydrophobic material and a colour-forming material dispersed in at least a portion of the hydrophobic material. Certain embodiments of the present invention relates to materials comprising a solid dispersion of a colour-forming material in an elastomeric hydrophobic material. The solid dispersion may take the form of a molecular dispersion or a partial molecular dispersion. Also included in the present invention, although not exclusively, are devices which comprise a hydrophobic material, a colour-forming material and a colour developing material wherein the colour forming material and the colour developing material are brought into contact when pressure of a predetermined threshold level is applied or removed from the device.

The invention relates to palladium/carbon catalyst hydrogenation activity evaluating method and device. The device comprises a reaction evaluating bottle arranged on an electromagnetic stirrer, a vacuum pump, a hydrogen inlet pipeline and a valve, a vacuum pressure sensor and an emptying pipe, wherein the electromagnetic stirrer is provided with a time relay and a stirrer voltage meter; the vacuum pump is connected with the reaction evaluating bottle through a pipeline and a valve; the hydrogen inlet pipeline and the valve are connected with the reaction evaluating bottle; the vacuum pressure sensor is connected with the reaction evaluating bottle, a pressure recorder is connected with the vacuum pressure sensor; and the emptying pipe is provided with an emptying electromagnetic valve. The invention judges the hydrogenation property of a palladium/carbon catalyst by adopting a method of measuring hydrogen consumption of reaction liquid within unit time per catalyst during the reaction without being evaluated by practical reactions. Active results of a new catalyst and an old catalyst are rapidly compared and clear, therefore, the invention is also suitable for the hydrogenation property evaluation of the palladium/carbon catalyst and other palladium/supporter catalysts.

The invention relates to a pressure measuring arrangement comprising a pressure measuring cell which is fed by a pressure corresponding to the pressure which is to be measured by a pressure tube filled by a pressurised liquid; at least one pressure recording unit is arranged separately from said cell, said unit being impinged upon by a pressure which is to be measured during operation, producing a pressure corresponding to the pressure which is to be measured via a pressure line filled by a liquid; a connection between the pressure tube and the pressure line. A modular design and a large amount of flexibility is obtained in respect of the spatial arrangement of the pressure measuring cell and the pressure recording unit. The connection consists of a base body wherein at least one end section of the pressure line is arranged, in addition to a pressure screw through which the pressure tube passes and is secured by a fixing element arranged on a side which is oriented towards the base body of the pressure screw. Said pressure screw has a thread which enables it to be screwed onto base body in such a way that the pressure tube and the pressure line are connected, and the connection is effectively sealed between the pressure tube and the pressure line.

The invention discloses a variable-rate pore pressure static sounding test device. The variable-rate pore pressure static sounding test device comprises a pore pressure static sounding test system, a flexible wall calibrating groove and a pore pressure recording instrument which are connected with one another sequentially from top to bottom, wherein the pore pressure static sounding test system comprises a data acquisition and control system, a back pressure frame, a probe rod, a side wall friction cylinder, a pore pressure filtering ring and a conical head; the flexible wall calibrating groove comprises a top plate, a bottom fixing ring, a bottom plate, a piston, an annular outer wall, an annular film, an inner wall, annular sealing rings, screw rods, test pores, drainage pores, vertical hole pressing pipes, drainage pipes, pore pressure sensor circuit components and a piston guide. The test device has the characteristics of accuracy, high repeatability and the like, and provides a powerful test tool for exploration practice and theoretical research on civil engineering.

The invention discloses a non-contact portable tonometer. A central processor unit, an image collecting unit and an air pressurization unit are all arranged in a suitcase, wherein the air pressurization unit comprises an air pulse generation module and a pressure recording and transmission module; the image collecting unit comprises a shooting module and a focusing module; the focusing module receives a control instruction of the central processor unit, and performs focusing action; the non-contact portable tonometer further comprises a network synchronization unit, and the network synchronization unit is used for conducting data packing, encryption and transmission on data output by the central processor unit; the pressure recording and transmission module sends current pressure data generated by the air pulse generation module in real time, and transmits the current pressure data generated by the air pulse generation module to the central processor unit; and the shooting module acquires image data in real time, and sends the image data to the central processor unit, and the central processor unit matches the pressure data with the image data and calculates the hardness of corneathrough a calculation module in the central processor unit. According to the non-contact portable tonometer, based on the portable characteristic and low cost, effects of biomechanics properties of eyes on an existing tonometer are reduced.

The invention provides a pressure-controlled gas drilling device which comprises an air pressurization system, a wellhead system, an air pressure drilling machine and a drilling machine throttling manifold, wherein the air pressurization system comprises a pressurizer and/or an air compressor, a gas flow and pressure recorder, a pressure release pipe and/or a bypass pipe, an emptying pipe and a control valve, and further comprises a pressure return system and a fine throttling manifold; a rotary control head is arranged on the wellhead system; the pressure return system and the fine throttling manifold are connected with the rotary control head. The invention further provides a pressure-controlled gas drilling method. The method comprises the following steps: calculating formation pore pressure according to logging information; under the condition of normal drilling, retaining formation annulus pressure to be equal to the formation pore pressure through a wellhead throttling valve; when a connection or a trip is made, adjusting and compensating the loss of wellbore circulating pressure by the pressure return system. According to the pressure-controlled gas drilling device, the effect of safe drilling of a complicated formation is well achieved by avoiding the phenomenon of water production on a formation in a gas drilling execution process.

The invention belongs to a coal seam gas well fracturing technology, and provides a ball-throwing type high energy gas fracturing device aiming to solve the problem that the proportion of rupture cracks formed by a hydraulic fracturing method is low, and the coal seam methane is difficult to be effectively exploited. The ball-throwing type high energy gas fracturing device comprises an upper sealing unit, a vibration trigger unit, an energy releasing unit, a pressure recording unit, a lower sealing unit and a guide shoe which are connected from the top to bottom in sequence; and the vibration trigger unit completes vibration of a pitching sealing ball, the energy releasing unit completes release of high energy gas generated by burst of the sealing ball, and the top of the upper sealing unit is connected with a ground fracturing truck pumper through a succession oil pipe. The vibration trigger unit of the device can realize an effect of shocking and trigger of the sealing ball, the high energy released by the sealing ball explosion can enter a target coal reservoir through a pressure relief hole of the energy releasing unit, vibration of the area near a well is conducted, an abnormal micro fracturing network system can be developed in coal matrix and communicate with original fracture, the permeability of the coal reservoir is improved, the reservoir is transformed, and increased production is achieved.

The invention provides an intelligent tongue muscle function training appliance and a manufacturing method thereof.The appliance comprises a U-shaped steel wire, the U-shaped steel wire is arranged on the maxillary dentition palatal side, the appliance further comprises palatal side positioning assemblies, a tongue muscle training assembly and a pressure recording assembly, the two ends of the U-shaped steel wire are provided with the palatal side positioning assemblies used for being connected with first molars on the left side and the right side respectively, and the pressure recording assembly is arranged on the right side of the U-shaped steel wire; a tongue muscle training assembly is arranged in the middle of the U-shaped steel wire and comprises a base and a tongue tip positioning piece, the middle of the tongue tip positioning piece is rotationally connected with the base, the base is connected with the middle of the U-shaped steel wire and provided with a waterproof shell, and a pressure recording assembly is arranged in the waterproof shell. The pressure recording assembly comprises a pressure sensor, a microprocessor, a clock module, a storage module and a power supply module; according to the method, the tongue muscle can be accurately and effectively trained, the training effect is guaranteed, meanwhile, the time and strength of tongue muscle training can be accurately recorded, and a reliable basis is provided for subsequent diagnosis and treatment.

Disclosed is a system and method for in-situ and instantaneous measurement of a pressure gradient by means of real-time localized pressure measurement with two or more pressure sensors, operating under particular application with respect to blood pressure gradient across the aortic valve, or other heart valves, and associated regurgitation of blood flow due to leakage resulting from insufficient valve closure. The pressure gradient across a diseased valve can provide an indication for the clinical indication for therapeutic intervention, as well as performing quality control following prosthetic valve placement. The body can have a construction including at least one opening in communication with the fluid bed of the circulation of blood, connected by means of a fluid canal passing the length of the catheter in contact with the proximal exterior space for introduction of a guidewire, diagnostic fluid or other therapeutic or diagnostic catheter devices. The system includes a multi-sensor catheter, with sensors arranged along the length of the distal segment of the catheter body, spaced apart to provide simultaneous pressure measurement on either side of the respective valves of the heart, in addition to one or more lumina in the core of the catheter that will provide the means for introduction of diagnostic fluids which flow out through a multitude of holes in the body of the distal segment of the catheter body. Each respective pressure recording can be monitored synchronized with physiological effects, specifically cardiac contraction and electrocardiogram (ECG) events in high temporal resolution.

The invention relates to an integrated MBBR-MBR coupled sewage treatment system based on an internet of things. The integrated MBBR-MBR coupled sewage treatment system based on the internet of thingscomprises a water inlet container, a water inlet peristaltic pump, an MBBR reactor, a water outlet peristaltic pump, a first electrically operated valve, and a water outlet container which are successively connected by a pipeline. The MBBR reactor is internally provided with a membrane module, and the membrane module comprises a membrane silk and a gate-shaped washing pipeline. The integrated MBBR-MBR coupled sewage treatment system based on the internet of things further comprises an MBBR water quality detecting module, a system operating parameter monitoring module, and a control processingmodule. The MBBR water quality detecting module, the system operating parameter monitoring module and a pressure recorder send detected data to a communication module after processed by a data processing module, the communication module sends the processed data to the control processing module, and the control processing module uploads the data to an internet of things cloud platform through the communication module, wherein the internet of things cloud platform is in communication connection with a management terminal. The integrated MBBR-MBR coupled sewage treatment system based on the internet of things is capable of improving sewage treatment capacity of a reaction system, and monitoring practical situations of each sub-system in the system in real time.

A device for the reliable measurement and control of the filling level in the quencher sump of a quenching chamber arranged downstream of the gasifying chamber is provided. The device has a differential-pressure transmitter. The measuring location recording the pressure of the gas chamber is flushed with inert gas. The device unproblematically senses the pressures in the quenching chamber and at the bottom of the quencher sump. The difference between which is used as a controlled variable for the filling level.

The invention discloses a wire sheath compression test device. The wire sheath compression test device comprises a cabinet, a buffer mechanism and a compression test mechanism. A data recording moduleis fixedly connected to the left side of the inner cavity of the cabinet. A data transmission module is fixedly connected to the right side of the inner cavity of the cabinet. A buffer mechanism is disposed at the bottom of the inner cavity of the cabinet. A compression test mechanism is disposed at the top of the inner cavity of the cabinet. The buffer mechanism comprises a buffer plate. A testbench is fixedly connected to the top of the buffer plate. Pressure recording modules are provided on both sides of the test bench. According to the wire sheath compression test device, the buffer mechanism is provided, so as to increase the buffering force during the test, avoid the looseness of the parts after prolonged use, and prolong the service life of the device. Furthermore, the compression test mechanism is provided, so that it is convenient for the staff to test the compression of the wire sheath, and the problem of inconvenience to the staff test due to the inaccuracy in the test ofthe existing compression test device is solved.

The invention relates to a tar distillation tail gas incineration process and a tar distillation tail gas incineration device. The tar distillation tail gas incineration device comprises a class-C product storage tank, a class-C product absorption system, a class-A and class-B product absorption system, a temperature recording and adjusting instrument, a proportion adjusting flow recording and adjusting instrument, a flow recording and adjusting instrument, a pressure recording and adjusting instrument, a pressure recording and adjusting instrument A, a breather valve, a pressure adjusting valve, a class-A and class-B product storage tank, an oxygen content analysis instrument, an air fan, a tail gas incinerator, a flow adjusting valve, an electromagnetic valve and a nitrogen self-standingadjusting valve. The tar distillation tail gas incineration process and the tar distillation tail gas incineration device have the beneficial effects that different treatment methods are adopted according to tail gas attributes, combustible gases in the tail gas are utilized, meanwhile, the tail gas treatment quantity is reduced, the risks and hidden dangers are reduced, and the operation cost isreduced.

The present invention provides a subsea apparatus for testing a hydraulic signature which has a fluid supply, a first pressure line coupled to the fluid supply, a second pressure line coupled to the fluid supply; and a pressure recording device operatively coupled to both the first pressure line and the second pressure line. A pressure recording device is capable of storing pre-determined pressure data representative of said pressure lines. The first pressure line functions at a lower pressure than the second pressure line while a pressure recording device records data to allow comparison of actual pressure data on the first and second pressure lines with said stored data.