20 results about "Pressure cell" patented technology

The utility model relates to the technical field of geological disaster monitoring discloses the automatic monitoring structure of stratum collapse is monitored with soil pressure gauge, including monitoring hole, sleeve tube, multiple soil pressure gauge, data acquisition appearance, power supply equipment and monitoring early warning platform, monitoring hole sets in stratum collapse hidden danger point area, sleeve tube fixed mounting is in monitoring hole, multiple soil pressure gauge is arranged in the internal cavity along the length direction of sleeve tube layer, and the internal wall interval of soil pressure and internal cavity forms and has filled area, and the backfill layer is filled in filled area, data acquisition appearance is connected with every soil pressure gauge through data transmission wire, power supply equipment and data acquisition appearance electricity are connected, through layering setting multiple soil pressure gauge in sleeve tube, can layering capture the soil pressure change of different depth stratum, solved the problem that traditional monitoring point is single, the cooperation of data acquisition appearance and monitoring early warning platform realized the real -time transmission and analysis early warning of data, improved the timeliness and accuracy of monitoring.

This invention discloses a pressure testing device for paper-faced gypsum board production, relating to the field of industrial manufacturing technology. In this solution, the telescopic component, telescopic cylinder, and directional trigger's sealed container rotate with the rotating frame, matching the feeding speed of the conveying component. As the board is uniformly conveyed and displaced during automated production, the telescopic cylinder, under the action of the directional trigger, pushes out the bottom sliding plate, achieving instantaneous pressure application upon contact. After pressure application, due to continuous movement, the sealed container and pressure box misalign, the compressed gas from the telescopic cylinder flows back into the sealed container, the sliding plate retracts, and simultaneously the detection roller loses pressure. After deformation, the board resets and disengages from the detection roller, completing instantaneous non-destructive bonding and instantaneous testing. This method, with the coordination of synchronous conveying and rotation, achieves full pressure testing in continuous production without causing instantaneous contact damage to the board surface.

A kind of intelligent testing device of longitudinal freeze-thaw deformation characteristics of tunnel, heat insulation material position adjusting system is located in the outermost ring of testing device, cold source and heat source are arranged in heat insulation material position adjusting system, water temperature meter is located in cold source and heat source, heat conduction material position adjusting system is located in the inside of heat insulation material position adjusting system, longitudinal area partition plate is located at each boundary of longitudinal each area, tunnel lining is located in the center of ring of testing device, lining thickness adjusting system is located in tunnel lining, front and rear panels are located at the front end and rear end of entire testing device respectively, and the cavity formed by front and rear panels and heat conduction material position adjusting system is filled with soil body, and soil pressure box, displacement meter and moisture content probe are arranged in soil body area.This application provides a kind of intelligent testing method of longitudinal freeze-thaw deformation characteristics of tunnel.This application can realize the test of tunnel deformation under longitudinal non-uniform freeze-thaw condition, and it is simple, easy to operate, low cost and short cycle.

The utility model discloses a kind of underground hole earth pressure monitoring and burying auxiliary tools of one-hole multi-element device, including reinforcing ladder and geotextile, reinforcing ladder is provided with horizontal muscle at intervals, and pressure cell and pore pressure gauge are arranged at the length direction interval of reinforcing ladder, pressure cell and pore pressure gauge are arranged at intervals, and multiple geotextile is wound around the surface of pore pressure gauge and pressure cell, sand layer is filled between adjacent geotextile layers, pore pressure gauge and pressure cell are connected with monitor by data line, and data line surface is connected with reinforcing ladder by winding film and bandage.The utility model discloses a kind of underground hole earth pressure monitoring and burying auxiliary tools of one-hole multi-element device, can bury multiple components in one hole, can greatly reduce the cost of drilling component burying, construction is quick and efficient, shortens construction period, component burying protection effect is good, conducive to the quick layout of monitoring component, and application prospect is good.

This invention relates to a method, system, storage medium, and equipment for monitoring soil pressure on closed-end pipe piles based on fiber optic grating (Fiber Bragg grating) sensing technology, belonging to the field of geotechnical engineering monitoring technology. This invention, for the first time, combines the theory of thick-walled cylinders based on elastoplastic mechanics with distributed fiber optic grating sensing technology to construct a precise analytical model relating the axial strain, circumferential strain, and soil pressure on the pile body of the closed-end pipe pile, achieving a technological leap from "point measurement" to "distributed sensing." Compared to traditional point-based soil pressure cell monitoring methods, this invention enables high-precision, quasi-distributed, and long-term stable monitoring along the entire length of the pile. Simultaneously, the fiber optic grating possesses unique advantages such as small size, resistance to electromagnetic interference, corrosion resistance, and wear resistance, causing no damage to the pile itself and being easy to operate. This significantly improves the continuity and reliability of soil pressure measurement, effectively overcoming the technical shortcomings of traditional sensors, such as susceptibility to damage during pile driving and the inability to monitor in real time.

The invention relates to a Vortex Micro Hydropower Plant (HPP) designed to address irregularities in water supply to turbines, enabling efficient electricity generation from small rivers. The vortex micro HPP comprises a vertical pressure cell with upper conical and lower cylindrical parts, an inlet channel peripherally connected to the upper edge of the pressure cell, and an outlet tube channel connected to the cylindrical part of the pressure cell, a hydro turbine placed in the cylindrical part of the pressure cell, while in the conical part of the pressure cell, the wings are located at equal intervals along the wall, which are rigidly attached to radial joints placed in the wall of the pressure cell, to which the telescopic levers with loads are rigidly connected from the outside of the cell.

The application relates to the technical field of foundation construction, and particularly provides a highway-railway dual-purpose immersed tube tunnel uneven settlement active control device and a construction method, which comprises a data acquisition module, a data analysis and decision module and a settlement active adjustment module, the data acquisition module comprises a DAU data acquisition box, a three-way displacement meter, a pressure box and a data transmission line, the data analysis and decision module comprises a data preprocessing and control server, a database server, a Web server and a data early warning and evaluation server, can access big data through an active settlement control center switch and realize artificial intelligence autonomous decision control, and the settlement active adjustment module comprises a jacking module and a grouting module. The application can realize active fine control of the posture of an immersed tube segment, and solves the problem of uneven settlement in traditional passive foundation construction quality control.

A system for controlling the tire pressure (P) of a pneumatic tire (2) comprises a set (6) of pressure cartridges (6i), which has at least one pressure cartridge (6i), a fluidic line (7) connected between the set (6) of pressure cartridges (6i) and the pneumatic tire (2), a controllable shut-off device (8) which is arranged in the fluidic line (7) and can be moved from a closed position, in which it shuts off the fluidic line (7), to an open position, in which it releases the fluidic line (7), and an electronic control device (9) connected to the shut-off device (8), which is configured to determine a tire pressure requirement and, when a tire pressure requirement is determined, to control the shut-off device (8) in order to move it from the closed position to the open position and increase the tire pressure (P).

This application discloses a method, apparatus, equipment, and medium for testing the instability of a physical model of ground settlement. The method includes: measuring the vertical settlement / heave at M displacement monitoring points in a soft soil layer using M single-point settlement gauges, and measuring the lateral / vertical pressure at N pressure monitoring points in the soft soil layer using N micro earth pressure cells; detecting the stability of the soft soil layer using the vertical settlement / heave at the M displacement monitoring points and the lateral / vertical pressure at the N pressure monitoring points; after the soft soil layer is detected to be stable, continuously pumping sand from the sand layer and continuously injecting water into the sand layer for a predetermined time as the current sand pumping; after the current sand pumping and water injection is completed, repeating the operation of detecting the stability of the soft soil layer; after the soft soil layer is detected to be stable, continuously pumping sand from the sand layer and continuously injecting water into the sand layer for a predetermined time as the next sand pumping, repeating the above operation until the soft soil layer is detected to be unstable.

The utility model relates to tunnel monitoring equipment technical field provides a kind of highway tunnel surrounding rock soil pressure monitoring device, including tray, soil pressure box is arranged on tray, sleeve pipe is fixedly connected in tray lower end surface, screw rod is screwed in sleeve pipe, one end of screw rod is fixedly connected with rotating member, rotating member is rotatably connected with base through bearing seat, fixed mechanism is arranged between sleeve pipe and base;Fixed mechanism includes fixed disc fixedly connected on sleeve pipe and arc plate fixedly connected on base, arc-shaped sliding slot is set up on fixed disc, arc plate is inserted and slides in sliding slot, fixed piece is arranged between arc plate and fixed disc, the utility model can avoid the change of the overall length of device, to ensure monitoring accuracy.

A testing device for the performance of subway tunnels under circumferential uneven freeze-thaw conditions is disclosed. A cold source is surrounded by a cold source pipe, and a heat source is surrounded by a heat source pipe. Water thermometers are installed within both the cold and heat sources. The cold and heat source pipes are fixed to a circumferential position adjustment system on the pipe wall, arranged in a ring. Thermal insulation material is located in the gap between the cold and heat source pipes. A thermal conductivity material thickness adjustment system is located inside the cold and heat source pipes. The subway tunnel segment is located at the annular center of the entire testing device, and the segment thickness adjustment system is located inside the segment. Front and rear panels are located at the front and rear ends of the device, respectively. The cavity formed by the front and rear panels and the circumferential position adjustment system is filled with soil. A soil pressure cell, displacement gauge, and moisture content probe are installed within the soil area. A testing method for the performance of subway tunnels under circumferential uneven freeze-thaw conditions is also provided. This invention enables simultaneous testing of circumferential uneven freeze-thaw settlement in subway tunnels, and is simple, easy to operate, inexpensive, and has a short cycle time.

Luminescent diamond is made subjecting a volume of diamond grains and catalyst material to high-pressure / high-temperature (HPHT) conditions. A pressure apparatus and / or a pressure cell is specially configured to impose a differential or asymmetric pressure onto the diamond volume during the HPHT conditions. This subjects the diamond grains to differential strain that increases the degree of plastic deformation of the diamond grains to increase the formation of nitrogen vacancy centers. Diamond pellets formed by such process and subjected to differential pressure can have an aspect ratio, or an aspect ratio change, of greater than one. The temperature of the HPHT process is 1,800° C. or less to facilitate desired nitrogen migration to preferentially promote formation of NV centers over NVN and N3 centers in the diamond pellets to provide a degree of luminescence in a red wavelength spectrum greater than diamond pellets formed by some other HPHT processes.

This utility model relates to a monitoring and early warning device for frost damage in permafrost tunnels in high-altitude and cold mountainous areas, belonging to the field of tunnel monitoring technology. It includes a data analysis system and at least one set of monitoring devices installed circumferentially along the tunnel cross-section. The monitoring devices include multi-point displacement gauges extending into the surrounding rock, soil thermometers and hygrometers, a series of thermometers, concrete strain gauges installed in the secondary lining, and a double-membrane earth pressure cell installed between the primary support layer and the secondary lining. The soil thermometers, hygrometers, concrete strain gauges, and double-membrane earth pressure cell are located on the same axis. The data analysis system is used to collect and analyze data from the multi-point displacement gauges, soil thermometers, hygrometers, thermometers, concrete strain gauges, and double-membrane earth pressure cell and issue early warnings. It can monitor the temperature field, moisture field, and frost heave deformation of tunnels in high-altitude and cold regions in real time, and can achieve multi-parameter coupling in permafrost tunnel monitoring.

The utility model provides a kind of soil pressure gauge directional lowering device, it is related to geotechnical engineering testing technical field.The sliding block of fixed soil pressure gauge in the soil pressure gauge directional lowering device slides along the vertical extension guide rail in lowering chute, provides stable guide path for soil pressure gauge lowering, ensure that soil pressure gauge is always lowered along correct trajectory, avoid lowering direction deviation, the sensing wire of soil pressure gauge is limited in one-to-one corresponding wire slot, effectively prevent sensing wire interlaced, entangled, interfere with slide rail system, prolong the service life of device.

The application discloses a goaf filling slurry solidification process in-situ monitoring device, system and method, relates to the goaf filling monitoring technical field underground, and the monitoring device comprises: a hollow package gauge pipe internally provided with a thermometer, an osmometer and an electric conductivity meter; a buffer plate arranged at one end of the hollow package gauge pipe and a pressure box module arranged at the other end of the hollow package gauge pipe, the pressure box module being provided with a first cross fixed frame away from the buffer plate; four displacement meters arranged around the hollow package gauge pipe, the four displacement meters comprising a sliding measuring rod and a stress plate connected with the sliding measuring rod; the stress plate being fixedly connected with a second cross fixed frame, the bottom of the second cross fixed frame being provided with a pulley for enabling the four displacement meters to move only in the front-back or left-right direction, the monitoring device has the characteristics of reasonable structure design, high implementation efficiency and excellent monitoring precision, can be long-term and stable in operation in the complex environment underground, and can realize the in-situ real-time continuous monitoring of multiple parameters in the filling slurry solidification process.

This invention discloses an automated calibration device and method for a three-dimensional earth pressure cell, relating to the field of earth pressure calibration devices. It solves the problems of existing three-dimensional earth pressure cell calibration devices being cumbersome to operate, lacking accuracy, having low automation, and being unable to comprehensively and accurately detect and calibrate triaxial stress. The device includes a base plate, a cylinder, a detection mechanism, a backfilling mechanism, and a positioning mechanism. The detection mechanism includes a three-dimensional earth pressure cell, the backfilling mechanism includes a loading plate with a backfilling groove, and the positioning mechanism includes an electromagnet. This invention calibrates the sand pressure inside the cylinder using the three-dimensional earth pressure cell in the detection mechanism. The backfilling groove on the backfilling mechanism evenly transports the sand from the top to the bottom and allows for sand compaction. The positioning mechanism pre-controls the electromagnet to position the three-dimensional earth pressure cell, and when the backfilling mechanism has reached the required height, the three-dimensional earth pressure cell is placed on top of the sand for detection.

The application provides a calculation and measurement monitoring method for stress parameters of a tunnel initial support structure. The application is based on stress characteristics and arrangement features of the tunnel support structure, and utilizes a single strain gauge to measure the ring axial force, surrounding rock pressure and indirect contact pressure between the lining of the tunnel initial support, thereby saving components, manpower and material resources, and avoiding the situation that soil pressure cells are difficult to arrange and are easy to be damaged when measuring the surrounding rock pressure and the indirect contact pressure between the lining in the prior monitoring scheme.

The application provides a multifunctional tunnel model test device and method for testing arching curve of coarse-grained soil, which comprises a loading system, a measuring system and a test box; the test box is a cuboid structure composed of a main frame and a pressure-bearing side plate; the upper part of the test box is provided with a force transmission steel plate; the loading system comprises a stand, a pressure lever, a balance weight, a loading frame and a tray; the stand is vertically fixed at the back of the test box, the pressure lever is arranged at the top of the stand, one end of the pressure lever is provided with the balance weight, and the other end of the pressure lever is provided with the tray; the tray is connected with the pressure lever through the loading frame; the top of the stand is a support point of the pressure lever; the measuring system comprises a displacement measuring device and a stress measuring device; the displacement measuring device comprises an adjustable balance screw and a scale; the stress measuring device comprises a strain gauge and a soil pressure cell. Compared with the traditional test device, the application realizes one box with multiple uses and can perform various tests such as soil body arching, settlement displacement and the like.

The utility model discloses an industrial electrical assembly line's dust extraction device, including dust collecting pipe and the dust collecting bag of detachable connection in the bottom of dust collecting pipe, still include pressure box, communicating pipe and adsorption box, pressure box fixed communication in the upper end of communicating pipe, and adsorption box is fixedly connected in one end of pressure box through communicating pipe, and is linked with pressure box, and the one end of pressure box away from adsorption box is equipped with air pump, and the inner wall of pressure box close to air pump one end is fixedly connected with filter screen, and the inside of pressure box is equipped with the dust removal subassembly of stirring. The utility model belongs to dust extraction device technical field, and specifically is a kind of local adsorption dust collection for industrial electrical assembly line, improve the distribution uniformity of adsorption wind force, avoid dust accumulation to produce the dust extraction device of industrial electrical assembly line of adsorption resistance.

The application discloses a multi-dimensional pore pressure monitoring automatic pressurization type soil body consolidation method, system and device, and relates to the technical field of soil body consolidation engineering. A plurality of soil pressure cells are arranged on the same plane and the same vertical direction of a soil sample to synchronously collect pore water pressure data at different positions in the soil sample; an automatic and step-by-step axial pressure is applied through a preset program of a measurement control system; based on the continuous drainage boundary theory, the time and space variation trends of the pore water pressure and the settlement data are combined to comprehensively determine the consolidation state and invert the interface parameters. The system and the device integrate a consolidation pressure chamber, an axial loading system, a water pressure control device, a multi-channel data acquisition system and a measurement control system to realize automatic and collaborative loading, monitoring and control, and the application can efficiently and reliably acquire multi-point time and space data of the whole soil body consolidation process, thereby providing an advanced test method for evaluating the consolidation space uniformity, determining soil engineering parameters and verifying the continuous drainage boundary theory.