37results about How to "Expand the scope of measurement" patented technology

The invention relates to the technical field of metering devices, and provides a multi-hopper type tipping hopper metering device. The multi-hopper type tipping hopper metering device comprises a tank body, a material collection hopper, tipping hoppers, a horizontal support plate, a spring and a tension sensor, wherein the upper part of the tank body is provided with an oil inlet, the material collection hopper is fixedly arranged in the middle part of the tank body, and a horizontal fixing shaft is fixedly arranged in the tank body under the material collection hopper. The multi-hopper type tipping hopper metering device has the advantages that the structure is reasonable and compact, the convenience in use is realized, and the metering accuracy is improved; by additionally arranging an oil and gas separator and an oil and gas buffer separating plate, the oil and gas can be well separated, the oil is stably and safely metered, and the metering standard of an oilfield is reached; by utilizing an elastic sensor and a counting sensor, the counting and real-time metering are realized, so as to well avoid the metering error caused by failure to turn over and leak oil when the metering time is reached but the standard weight of the tipping hopper is not reached; the multi-hopper type tipping hopper metering device is suitable for thick oil and thin oil, and the metering range is expanded.

The invention discloses a method, system, terminal equipment and readable storage medium for measuring extremely low-frequency vibration by a low-frequency vibration sensor. characteristics and phase-frequency characteristics; use the low-frequency vibration sensor to measure and obtain the time-domain waveform diagram of extremely low-frequency vibration; perform spectrum analysis on the time-domain waveform diagram of a specified period to obtain its spectrum characteristic value; use the frequency of the extremely low-frequency band of the sensor The characteristic value of the frequency spectrum of the measured extremely low-frequency vibration is corrected by the response characteristics; a set of sine waves of the fundamental frequency and the multiplier frequency are generated with the corrected frequency spectrum and superimposed on the phase to obtain the corrected time-domain waveform diagram of the extremely low-frequency vibration, thereby realizing Accurate measurement, analysis, calculation and storage of extremely low frequency vibrations. The invention solves technical problems such as large error and unreliable data in the measurement of extremely low-frequency vibration in the prior art, and improves the reliability and accuracy of extremely low-frequency vibration measurement.

The invention relates to a metering device of packing machine, concretely a shutter-style multiple row synchronous metering device used in multiple row simultaneity metering and packing. It includes hopper with scraping flitch, metering plate and closing plate set in sequence under the hopper, the hopper and scraping flitch are jointed as one body. The aforementioned scraping flitch, metering plate and closing plate are all with elongated slot of equal-width and equal-distance, one side of the scraping flitch and closing plate is respectively connected with air cylinder, a slide mechanism is set in the elongated slot of the metering plate. Compared to the present technology, the invention has simple structure, can implement multiple row synchronous metering during the packing procedure, the metering scope is great and can fix on the amount of the materials by adjusting the slide position for the invention employs regulable link slide block structure in the metering plate, evades the extrusion and damnification from the machine itself to the materials for the integrated structure and bulk movement of the hopper and scraping flitch, diminishes the fine material content of the materials, also evades material pollution and improves quality of the materials.

The invention discloses an automatic weighted titration type micro-metering method and device. A A-type titration pipe assembly, a B-type titration pipe assembly and a C-type titration pipe assembly, which are triangularly arranged, are arranged between a liquid storage tank and a bracket, the A-type titration pipe assembly comprises titration pipes with range weights respectively being 1 microliter, 2 microliters and 5 microliters, the B-type titration pipe assembly comprises titration pipes with range weights respectively being 10 microliters, 20 microliters and 50 microliters, the C-type titration pipe assembly comprises titration pipes with range weights respectively being 100 microliters, 200 microliters and 500 microliters; an electronic control valve connected with a control system is arranged on each titration pipe, the control system is used for completing the metering by calling at least electromagnetic valves with at least titration time, sequentially enabling the titration pipes to execute the titration times of corresponding electronic control valves according to the range weights in a descending order, and allocating different ranges of the titration pipes according to different weights by adopting a linear combination manner; the titration metering decomposition is completed by titration pipes with different weights, thus the accuracy of replenishing liquid is improved, and the high-precision micro-metering is completed.

The invention belongs to the fluid measurement technology field and relates to a multiphase flow measurement method based on a double-section impedance type long waist cone sensor. The adopted sensor comprises a cone throttling element, a systolic blood pressure drop differential pressure transmitter, a permanent pressure loss differential pressure transmitter and an electrical sensitive sensor. The method comprises the following steps: collecting two pairs of differential pressure signals generated by the cone throttling element; utilizing the electrical sensitive sensor to collect an electrical signal; calculating the total mass flow rate, the each-phase mass flow rate and the each-phase mass content according to a double-differential pressure model of a single throttling element; utilizing a support vector machine to realize classify, identify and pre-judge a flow pattern according to the measurement data of the differential pressure signals and the electrical signal; adopting a capacitance model to measure a mixed fluid dielectric constant; adopting a conductivity model to measure the mixed fluid conductivity; and calculating the procedure parameter of oil-gas-water three-phase flow. The multiphase flow measurement method is not influenced by the fact that whether a multiphase flow continuous phase is conducted or not, has the characteristics of high measurement precision,high reliability and the like and can obtain more measurement information.

The invention belongs to the technical field of fluid measurement, and relates to multi-phase flow measuring methods based on a single-section impedance long-waist internal cone sensor. The adopted sensor comprises a cone throttling piece, a systolic pressure drop differential pressure transmitter, a permanent pressure loss differential transmitter and an electrical sensitive sensor. According tothe difference of properties of continuous phases, the invention provides two measuring methods which have the same inventive concept and respectively comprise the following steps of: collecting two pairs of differential signals generated by the cone throttling piece; collecting electrical signals by utilizing the electrical sensitive sensor; calculating the total mass flow rate, the mass flow rate of each phase and the mass content of each phase according to a double-differential model of a single throttling piece; selecting a corresponding electrical method according to whether the continuous phases are conductive, and calculating the section content of each phase; and selecting a corresponding calculating model, and calculating the procedure parameters of an oil phase, a gas phase and an aqueous phase. The multi-phase flow measuring method is characterized by high measuring precision, high reliability, capability of obtaining more measurement information, low cost and the like, andcan be widely applied in the industries of petroleum, chemical engineering, energy power, metallurgy and the like.

The invention provides a gas metering device which comprises a metering tube, a balance cup, and a lifting unit, wherein the metering tube is used to store gas needing to be metered; the balance cup communicates with the metering tube by a first pipeline, and the balance cup is designed to store a liquid communicating with the external environment; the lifting unit is connected to the balance cupso as to drive vertical motion of the balance cup; and after injection of the gas into the metering tube, the lifting unit can drive the balance cup to move, make the liquid level in the balance cup and the liquid level in the metering cup balanced and compute the volume of the gas according to a motion distance of the balance cup. The gas metering device has the advantage that automatic collection and metering of the volume of gas which has unsteady flows, uncertain constituents and high pressure, and is generated in a lab can be achieved.