60results about How to "The practical value of the project is good" patented technology

The invention provides a gas heat value soft measurement method based on a combustion system operation parameter. The soft measurement method comprises the steps of acquiring real-time data of the combustion system operation parameter; preprocessing the acquired data, and obtaining effective data for solving the gas heat value; and according to the acquired effective value, calculating a gas dry base heat value. According to the method, the gas dry base heat value is indirectly calculated according to a relation between a dry air amount and the gas heat value, and a result can be used for guiding combustion optimization adjustment of combustion equipment, thereby providing a basis for safe and economic operation of the combustion equipment, setting inconvenience and difficulty in combustion equipment operation caused by no gas heat value online analyzer in a majority of steel plant gas combustion systems, and realizing high practical engineering value.

Embodiments of the invention disclose a capacitive sensor-based liquid level measurement device. The device comprises a capacitive sensor and a capacitance measurement instrument which is connected with the capacitive sensor, wherein the capacitive sensor is used for sensing the liquid level of to-be-tested liquid and converting the liquid level information into a capacitance value; and the capacitance measurement instrument is used for detecting the capacitance value and calculating the liquid level of the to-be-tested liquid according to the capacitance value. The device is suitable high-temperature (300 DEG C) liquid; the measurement precision is high; the non-invasion type capacitive sensor is adopted so that the service life of the measurement device is greatly prolonged; connection mechanisms such as a connection rod and the like are not used so that the volume of the measurement device is greatly decreased; and the structure is simple and the leads are few, so that the reliability of the device is improved, and the device is particularly suitable for small nuclear heating reactors and has a favorable application prospect.

The invention discloses a liquid level measuring device based on a capacitive sensor. The liquid level measuring device comprises a capacitance detection unit, an initialization unit and a control chip unit, wherein a plurality of capacitive sensors used for detecting a liquid level in a storage tank are arranged in the storage tank, and liquid level capacitive sensors used for carrying out real-time capacitance data detection on liquid level detection points are arranged at different vertical heights; the initialization unit is used for initializing a capacitance during no-load and a capacitance value during full-load; the control chip unit is used for making the plurality of capacitive sensors periodically measure capacitance data of an environment in the tank so as to obtain a state ofa current fixed point liquid level and judge whether a liquid reaches a liquid level height at the fixed point; and meanwhile, the capacitive sensor for detecting a gas is arranged at a top of the tank, a change curve of the capacitance in the gas along with a change of the liquid level of a liquefied natural gas in the sensor is counted, and the height of the current liquid level is calculated inan auxiliary mode through the capacitance value measured by the capacitive sensor for detecting the gas. The structure is simple, the number of leads is small, and device reliability is improved.