31results about How to "Measurement data is real" patented technology

The invention relates to a transformer insulation state on-line monitoring device which comprises an industrial computer, a data acquisition card and a digital I/O card, wherein the data acquisition card and the digital I/O card are arranged on the industrial computer, the digital I/O card is connected with a power management unit, a signal conditioning unit and an amplifier unit are connected with a dielectric loss iron core measuring unit, the data acquisition card is connected with the amplifier unit and the dielectric loss iron core measuring unit, the amplifier unit is connected with the signal conditioning unit, the signal conditioning unit is connected with a local discharge fronting plate, the dielectric loss iron core measuring unit is connected with a dielectric loss iron core fronting plate, the local discharge fronting plate is connected with a large sensor at the bottom of a sleeve and a two-in-one sensor at the tail screen of the sleeve, the dielectric loss iron core fronting plate is connected with the two-in-one sensor at the tail screen of the sleeve and an iron core grounding sensor for sending the acquired signal to the industrial computer for signal polarity identification, digital filtration and anti-interference processing, a local discharge of each phase of a transformer to be measured is computed, discharge times are counted and a discharge tendency chart is generated. The invention has the characteristics of good integrity, high measurement accuracy, simple software operation and capability of remote browsing.

The invention relates to a method for analyzing the crude oil mass fraction in the drilling well fluid by a nuclear magnetic resonance technology. On the basis of the theory for measuring the oil content by nuclear magnetic resonance, the method realizes the quantitative analysis of the oil mass fraction of the drilling well fluid in a petroleum drilling well by a nuclear magnetic resonance analytical instrument through manufacturing a working curve of the oil mass fraction of the drilling well fluid in a target layer and carrying out the nuclear magnetic resonance continuous analysis of the drilling well fluid along the drilling. The method comprises the steps of calibrating by the nuclear magnetic resonance analytical instrument, manufacturing the working curve of the oil mass fraction of the drilling well fluid, collecting and processing a drilling well fluid sample, analyzing by nuclear magnetic resonance and solving the oil mass fraction in the drilling well fluid. After being applied, the invention can accurately detect the oil content of the drilling well fluid, analyze the drilling well fluid in the well drilling process in time at the well drilling scene, obtain the analytical data of the oil content of the drilling well fluid in time and achieve the quantitative evaluation on the oiliness of a storing and collecting layer, has real, accurate and reliable measured data and provides technology support for the exploration, development and production of petroleum in time.

The invention discloses a differential-pressure-adjustable emanation rock medium radon precipitation rate measuring device and a using method thereof. The upper end of a sample box (2) is connected with a sealing top cap (3), and the lower end is connected with a cylinder base (5) and a porous permeable plate (4). The outlet of a top cap air charging module (15) and the inlet of a top cap vacuum pumping module (17) are connected with the sealing top cap (3), and are further connected with a first precision digital barometer (13). The outlet of a base nitrogen charging module (16) and the inlet of a base vacuum pumping module (18) are connected with the cylinder base (5), and are further connected with a second precision digital barometer (14). The outlet of the top cap vacuum pumping module (17) and the outlet of the base vacuum pumping module (18) are connected with a vacuum pump module (19). The invention relates to a differential-pressure-adjustable emanation rock medium radon precipitation rate measuring device which can effectively measure the medium radon precipitation rate of emanation rocks under different differential pressures.

The invention discloses a test device of a soil unit test piece. A side press plate is uniformly arranged on the outer side of a soil sample test piece to be tested arranged in a soil sample holding table groove; meanwhile, a sliding device capable of sliding and being fixed is arranged at the outer side of a loading device; the loading device is used for exerting a load on the top surface of thesoil unit test piece, and simultaneously performs different constraints on the opposite side, third side and fourth side of the soil unit test piece; the constraints at the identical sampling positionare exerted on the test soil unit test pieces according to the constraint conditions received by the soil unit in the roadbed sampling position; the test on force in different directions of the soilsample test piece to be tested can be realized, so that the soil sample test piece to be tested is naturally stressed. The device has the advantages that the structure is simple; the soil unit test piece can be subjected to direct shearing test under the constraint conditions; in addition, the shearing surface of the soil unit test piece is enabled to be always in contact with the soil body in thesharing process; the Poisson's ratio of the soil sample is measured through measuring the peripheral deformation and vertical deformation of the soil unit test piece; the measuring authenticity of the soil unit test piece is effectively improved.

The invention discloses a clamp for the mechanical property test of welding of a steel-bar truss, belongs to the device for fixing a test member, and particularly relates to a clamp for the shear resistance test of welding points of the steel-bar truss. The clamp is characterized by comprising a main hook, a positioning shaft, a sliding block, an adjusting bolt and a base which are connected, wherein the front end of the main hook is provided with a hook head which is provided with a sample opening groove, and the rear end of the main hook is provided with a positioning shaft sleeve; the positioning shaft connected with the sliding block is arranged in the positioning shaft sleeve in a sliding manner; the sliding block is arranged in a rectangular sliding groove arranged on the base in a sliding manner, and is connected with the adjusting bolt arranged on the side wall of the rectangular sliding groove; and a fixed plate is arranged under the base and is connected with a drawing machine. By utilizing the clamp disclosed by the invention, the test is carried out according to the steps of manufacturing a sample, installing the clamp, clamping the sample, adjusting the main hook, drawing and evaluating yield. The clamp disclosed by the invention has the advantages that the concept is novel, the structure is simple, the use is convenient and reliable, multiple purposes are achieved by one clamp and the application to the mechanical property test of multi-specification trusses can be achieved; and since the sample is manufactured at normal temperature, the operation is simple and convenient, the consumed time is less, the measured data is real, accurate and reliable, the efficiency is high and no energy consumption is caused.

The invention provides a multi-point displacement meter capable of automatically measuring space displacement. The multi-point displacement meter comprises an anti-explosion online monitoring terminal, an anti-explosion Bluetooth emitter, a space displacement sensor, a wire, a drilling rod, a fixed ratchet and an end drilling rod. According to a to-be-measured rock stratum separation layer, an offset position and depth of a drilling hole, length of the drilling rod is adjusted. Then, the drilling rod part is completely inserted into the drilling hole, and a reference plate tightly clings to surrounding rock. When a separation layer and offset occur in each rock stratum, a rotation small ball in the space displacement sensor rotates, a displacement telescopic rod is extended, and the space displacement sensor transmits a signal to the anti-explosion online monitoring terminal for processing and then stores the data. During data acquisition, the data is transmitted into a collector through the anti-explosion Bluetooth emitter. By combining the space displacement sensor, the drilling rod, the anti-explosion online monitoring terminal and the Bluetooth device, the movement rule of surrounding rock in the space can be precisely and properly researched, measurement is real and installation is easy.

The invention discloses a high-temperature fatigue testing device under the combined action of vanadium pentoxide corrosion and sulfuric acid corrosion. The device comprises a heating cabin (1), the heating cabin (1) consists of two parts which are hinged with each other; through holes are formed in a top plate and a bottom plate of the heating cabin (1); an electric heating device (2) is arrangedon the inner wall of the heating cabin (1), and a tray (3) is arranged at the bottom; the testing device further comprises a sample clamping mechanism (4); the sample clamping mechanism (4) is composed of two clamping assemblies which are longitudinally distributed; the clamping assembly comprises a hydraulic cylinder (5); a clamping jaw (6) is connected to the working end of the hydraulic cylinder (5), a connecting piece (7) is clamped in the clamping jaw (6), one end of the connecting piece (7) is matched with the clamping jaw (6), a connecting rod (8) is connected to the other end of the connecting piece (7) in a sleeved mode, and meanwhile a locking jackscrew (9) matched with the connecting rod (8) is in threaded connection.

The invention relates to a quasi-static in-situ biaxial tensile property testing instrument, and belongs to the field of precise scientific instruments. The quasi-static in-situ biaxial tensile property testing instrument includes a driving unit, a transmission unit, a clamping unit and a detection unit. According to the driving unit, two direct-current servo motors provide power sources for the X direction and the Y direction respectively, motor output torque is firstly decelerated and reversed through a turbine mechanism of the transmission unit, two pairs of four precise trapezoidal lead screw nut pairs in the X direction or the Y direction are driven, and the clamping unit is driven to complete linear motion; The clamping unit is used for clamping the test piece by virtue of a clamp body mounted on a sliding nut seat so as to realize load loading; the Y-direction clamp has a prefabricated inclination angle of 25 degrees, and the X-direction clamp is provided with a hinge. The quasi-static in-situ biaxial tensile property testing instrument has the advantages of small volume and compact structure, can be placed in most large-chamber scanning electron microscopes, and belongs to the field of precise scientific instruments. The in-situ biaxial tensile test in a plane stress state can be provided for a tested sample under a scanning electron microscope.