7results about "Mass flow measurement devices" patented technology

This invention discloses a micro-orifice solenoid valve measurement system, method, and lunar soil water ice content measurement method, relating to the field of lunar soil measurement. The micro-orifice solenoid valve measurement system includes a water vapor generating unit that heats ice to form water vapor, and a weighing unit that measures the weight change of the ice. The water vapor generating unit is connected to a pressure stabilizing unit via an inlet pipe with a needle valve. The pressure stabilizing unit is connected to a vacuum tank via an outlet pipe with the micro-orifice solenoid valve to be measured, and a vacuum system is used for evacuation. The measurement method combines the actual pressure value when the pressure of the pressure stabilizing unit changes according to a set gradient with the ice weight change value to determine the relationship between the water vapor mass flow rate of the micro-orifice solenoid valve and the pressure before the valve. In the lunar soil water ice content measurement method, the water vapor generated when the lunar soil is heated passes through the micro-orifice solenoid valve, and the lunar soil water ice content is obtained using the relationship between the water vapor mass flow rate of the micro-orifice solenoid valve and the pressure before the valve. The lunar soil water ice content measurement results of this invention have the advantages of small deviation and high accuracy.

The utility model provides a kind of wide-area water area local interception device, power plant water intake system.The wide-area water area local interception device includes: gas supply part, is configured to provide gas;At least one jet component, each group of jet component includes multiple bubble sections, multiple bubble sections in each group of jet component are sequentially arranged in the edge of local water area determined in wide-area water area range, each bubble section is connected with gas supply part, and each bubble section is formed with multiple jet orifices allowing gas to be ejected;Gas supply part provides gas to multiple bubble sections respectively, and the gas ejected by multiple bubble sections forms bubble curtain extended from multiple bubble sections to the liquid surface edge of local water area, to prevent peripheral float into local water area.

Embodiments of a kernel-level grain monitoring system include a grain camera positioned to capture bulk grain sample images of a currently-harvested grain taken into and processed by a combine harvester, a moisture sensor, and a display device. A controller architecture is coupled to the grain camera, to the moisture sensor, and to the display device. The controller architecture is configured to: (i) analyze the bulk grain sample images, as received from the grain camera, to determine an average per kernel (APK) volume representing an estimated volume of a single average kernel of the currently-harvested grain; (ii) repeatedly calculate one or more topline harvesting parameters based, at least in part, on the determined APK volume and the moisture sensor data; and (iii) selectively present the topline harvesting parameters on the display device for viewing by an operator of the combine harvester.

The present application relates to the technical field of mass flow measurement, and particularly relates to a mass flow adaptive measurement method and system for shoe glue proportioning, comprising: obtaining multiple types of conveying flow materials for shoe glue proportioning, performing charge signal collection and preprocessing on the powder flow materials by using a mass flow sensor set to obtain multiple preprocessing signals, performing phase difference analysis on the multiple preprocessing signals to obtain signal phase differences, calculating a preliminary powder flow mass flow based on the signal phase differences, a physical distance and a sampling frequency, performing liquid mass flow measurement on the liquid flow materials to obtain a preliminary liquid flow mass flow, and completing the mass flow adaptive measurement for shoe glue proportioning based on the preliminary powder flow mass flow and the preliminary liquid flow mass flow. Through real-time mass flow accurate detection, the present application realizes mass flow adjustment according to the component proportioning of shoe glue, so as to improve the control accuracy of shoe glue proportioning and ensure production continuity and product quality consistency.

An aircraft fueling adapter incorporating an aircraft fueling adapter flow meter is disclosed for improving accuracy of fueling protocols by providing an additional independent flow data point in mass units and / or volume units in the fueling process that can be compared against existing fuel flow readings.

A kind of compressed hydrogen gas dispenser verification device of straight pipe structure, belong to hydrogenation machine detection technical field, 35MPa hydrogenation inlet pipeline, 70MPa hydrogenation inlet pipeline, exhaust pipeline, pressure gauge collection pressure pipeline, 35MPa / 70MPa outlet interface pressure pipeline are arranged in casing, 35MPa hydrogenation inlet pipeline, 70MPa hydrogenation inlet pipeline are connected with the inlet end of mass flowmeter after being connected in parallel by pipeline, pressure transmitter is arranged on pipeline, the vent of mass flowmeter is connected with exhaust pipeline, 35MPa exhaust interface, diffusion interface by pipeline through four-way, the outlet end of mass flowmeter is connected with pressure gauge by pressure gauge collection pressure pipeline, outlet end is connected with 35MPa / 70MPa outlet interface by 35MPa / 70MPa outlet interface pressure pipeline, 35MPa / 70MPa outlet interface pressure pipeline is connected with exhaust pipeline in parallel by third three-way.The device of the utility model is simple in structure, easy to install and use and safe and reliable, compatible detection 35MPa and 70MPa two pressure grades hydrogenation machine, ensure the safety of compressed hydrogen gas dispenser verification device long-term use.