9 results about "Pressure recording" patented technology

The utility model relates to an asphalt emptying system which comprises an underground emptying groove, an asphalt storage groove, a nitrogen pipeline, a breathing pipeline and an asphalt emptying header pipe, the nitrogen pipeline, the breathing pipeline and the asphalt emptying header pipe are arranged on the upper portion of the underground emptying groove, an extrusion pipeline is arranged on the lower portion of the underground emptying groove, and the other end of the extrusion pipeline is connected with the asphalt storage groove. The nitrogen pipeline, the breathing pipeline, the asphalt emptying header pipe and the extrusion pipeline are all provided with electromagnetic valves, all the electromagnetic valves are connected with a liquid level recording interlocking alarm instrument and a pressure recording control instrument, and a gas sealing bottom valve is arranged at the connecting position of the extrusion pipeline and the underground emptying groove. The maintenance time is shortened, the workload of operators is reduced, a large amount of investment, operation cost, operation cost and maintenance cost are saved, operation is simplified, maintenance is very convenient, nitrogen serving as back pressure is prevented from being discharged, and the safety of the system is improved.

Systems and methods for measuring stress in a rock mass using sleeve fracturing are provided. A system for measuring stress in the rock mass includes an expandable sleeve insertable into a borehole formed in the rock mass and operable to apply a radially outward force against a wall of the borehole by expansion of the sleeve. A positive displacement pump is operatively connected to the sleeve and is operable to deliver a liquid to the sleeve at a constant flow rate to cause expansion of the sleeve. A pressure sensor is operable to measure a pressure of the liquid. A pressure recorder is operatively connected to the pressure sensor for recording the pressure of the liquid.

This invention relates to the field of pressure measurement technology, specifically a method and system for tracing isothermal pressure. The method includes acquiring the measured wireless pressure recorder; heating a dry isothermal chamber using an air bath dry isothermal control method, causing the temperature of the dry isothermal chamber to sequentially reach and stabilize at a certain value. N A target temperature value is obtained. N A set temperature environment is established; under each set temperature environment, the actual pressure value inside the dry constant temperature chamber is gradually brought closer to the preset standard pressure value using a standard pressure source; during the process of the actual pressure value gradually approaching the preset standard pressure value, samples are obtained. N A set of temperature-pressure deviation data; for N A hierarchical fitting process is performed on a set of temperature-pressure deviation data to obtain the temperature-pressure compensation curve of the wireless pressure recorder under test. This invention achieves calibration of the wireless pressure recorder under test at different temperatures through fitting calculations.

1. Name of the product in this design: Pressure recorder. 2. Purpose of this product design: This product utilizes pressure recording and measurement. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

Disturbance in a refrigerant circuit. A disturbance in a refrigerant circuit (1) is detected, the circuit (1) comprising a valve (3) having an inlet and an outlet and a first sensor (7) for recording a thermodynamic state at the inlet and a second sensor (8) for recording a thermodynamic state at the outlet, the detection comprising: recording a first signal using the first sensor (7); recording a second signal using a second sensor (8); processing the first signal to determine an upstream pressure pu; processing the second signal to determine a downstream pressure pd; recording a position signal; processing the position signal to determine a position (12) of the valve (3); an emission coefficient cm is determined based on the upstream pressure pu, based on the downstream pressure pd, where the coefficient cm correlates the actual flow rate at the location with the maximum flow rate at the location.

Provided is a compaction management system capable of accurately managing the compaction state of a compaction target ground. The compaction management system includes a compaction-pressing-record production unit, a storage device, and a final-compaction-pressing-record selection unit. The compaction pressing record production unit produces a plurality of compaction pressing records, each of which includes the pressing compaction position and the compaction pressing force which are associated with each other. The storage device stores the plurality of compaction pressing records. The final-compaction-pressing-record selection unit selects a selection target compaction pressing force record including the largest compaction pressing force among a plurality of selection target compaction pressing records, which are included in the plurality of compaction pressing records stored in the storage device and produced with respect to the same compaction pressing position, as the final compaction pressing force record with respect to the compaction pressing position.

A mobile internet of things (IoT) unit for cleaning grease vents, herein referred to as the ‘unit,’ is disclosed. The unit is comprised of the following parts: a mobile platform with magnetic tracks; a mobile device software application (app); cleaning attachments such as power washers and lasers, sensors such as conductivity meters (to measure buildup), air temperature, velocity and pressure; recording devices such as digital still and streaming cameras; a microcontroller with wireless communications; onboard lighting and a rechargeable battery. Additional details regarding the unit are examined further in this disclosure.

This invention relates to the field of geotechnical engineering technology and discloses a method and system for inclined borehole pressure water testing based on data traceability. The method includes: context binding of the pressure water test data based on the collected metadata of the inclined borehole test section to obtain data lineage flow records and data lineage pressure records; then performing hash feature mapping on the records to obtain integrity verification values; performing trusted data aggregation on the records based on the verification values ​​to obtain traceability data packets; performing tamper-proof chain derivation on the data packets to obtain a traceability data chain and storing it in a distributed storage node; finally reconstructing and fitting the traceability data chain to obtain a flow-pressure relationship curve, and obtaining a pressure water test report of the inclined borehole test section through seepage field back analysis. This invention can improve the efficiency of inclined borehole pressure water testing based on data traceability.