12 results about "Liquid density" patented technology

An acoustic wave sensor (1) for waves propagating in a liquid is optically sensitive to variations in the liquid's density caused by pressure changes associated with the passage of an acoustic wave. The sensor is designed to be threaded through a wall (102) of a pipe, for example, in a water distribution network. The sensor is useful for detecting liquid leaks at a distance from its installation location, or for adjusting the intensity of an acoustic wave used to unclog a deposit on a surface in contact with the liquid. (Abstract figure: Figure 2)

Methods, apparatus, and systems for determining a level of a liquid in a liquid-containing vessel are disclosed. The liquid-containing vessel may be fluidically connected to a displacer cage. The method may include obtaining, with a load measurement device, a weight force of a displacer suspended from the load measurement device and disposed within the displacer cage. The method may also include submerging the displacer into the liquid and obtaining, with the load measurement device, a net force acting on the displacer. The method may further include obtaining, with a liquid density measurement sensor disposed within the displacer cage, a liquid density at a first location of the liquid. The method may still further include determining, using, at least, the net force and the liquid density at the first location of the liquid, the level of the liquid in the vessel.

An apparatus and method are provided for optimizing the use of gas hydrate inhibitors by combining real-time "dew point" measurement with quantum-chemical phase-change analysis. A gas hydrate inhibitor reduces gas moisture; by measuring gas humidity and identifying the "dew type" using two chilled-mirror sensors each equipped with an imaging camera, a "dew coefficient" (0–1) is calculated via quantum chemistry analysis of inhibitor solvation. This mesoscale coefficient is used to monitor fluid phase changes. A general relationship for the water / hydrocarbon "dew coefficient" is derived as a function of changes in Gibbs free energy of dew evaporation (inhibitor solvation), gas temperature and pressure, and gas / liquid density. By combining measured "dew point" and "dew type" with quantum chemistry data of phase transformations "dew coefficient", the optimal inhibitor injection rate is determined, minimizing inhibitor consumption while preventing hydrate formation.

The application discloses a device for monitoring the performance of a fracturing fluid, and the device is used for monitoring the performance of the fracturing fluid. The device comprises a proportional mixing module, a density measuring module, a viscosity measuring module, a resistance reduction rate measuring module and a control and communication module. The control and communication module specifically performs the following method: obtaining the liquid density of a liquid storage tank and the sand density of a sand mixing truck tank, and calculating the sand concentration of a target fracturing fluid sample based on the density, mass and volume of the target fracturing fluid sample, the liquid density and the sand density; obtaining the initial pressure difference of the resistance reduction rate measuring module before measurement, and calculating the resistance reduction rate of the target fracturing fluid sample according to the inlet pressure, the outlet pressure and the initial pressure difference; and monitoring the performance of the fracturing fluid in real time based on the viscosity, the resistance reduction rate, the sand concentration and the density.

The utility model discloses a differential pressure liquid level measuring system with dynamic density compensation for pressure vessel with first and second pressure lead pipes, which comprises a first and a second measuring assembly, a density sensor and a liquid level measuring instrument. The first measuring assembly is composed of a first pipeline and a first pressure transmitter connected to the end of the first pipeline, and is connected to the first pressure lead pipe. The second measuring assembly comprises a second pipeline, a sight glass and a second pressure transmitter. The second pipeline is connected to the second pressure lead pipe. The sight glass is arranged at the end of the pipeline. The second pressure transmitter is installed at the other end of the sight glass. The density sensor is arranged outside the container to detect the density of the liquid. The liquid level measuring instrument receives the signals of the density sensor and the two pressure transmitters through a signal port, processes the signals through a controller and outputs the liquid level data. The utility model significantly improves the measurement accuracy through density compensation. The split type pressure transmitter is easy to replace individually to reduce the maintenance cost. The state of the pressure lead pipe can be observed through the sight glass structure, and the crystallization blockage can be removed in time.

The embodiment of the present application provides a reboiler and a rectifying tower, the reboiler comprises a body, a heating device and a differential pressure liquid level meter. The body is provided with an evaporation cavity, a pressure measurement cavity and a transfer cavity, the evaporation cavity and the pressure measurement cavity are both below the transfer cavity, the top of the evaporation cavity and the top of the pressure measurement cavity are both communicated with the transfer cavity, the transfer cavity is provided with a liquid inlet, the liquid inlet is used for the condensed liquid in the rectifying tower to enter the transfer cavity, the bottom of the evaporation cavity and the bottom of the pressure measurement cavity are communicated. The differential pressure liquid level meter is used for obtaining the liquid pressure value of the bottom wall of the pressure measurement cavity and the gas pressure value in the transfer cavity. The heating device is used for heating the condensed liquid in the evaporation cavity and making it gasify. The reboiler in the embodiment of the present application can indirectly obtain the liquid level height in the evaporation cavity by measuring the liquid level height in the pressure measurement cavity, thereby effectively reducing the probability that the liquid level height detection is seriously distorted due to the influence of the gasification material on the condensed liquid density, and improving the measurement precision of the liquid level height in the reboiler.

The application provides a wet gas phase separation flow measurement method based on disturbance wave height and vortex flow meter, first, pressure, temperature, liquid film thickness fluctuation signal and vortex signal are collected, then gas density, liquid density and liquid phase surface tension are calculated through pressure and temperature respectively, vortex frequency is extracted, and disturbance wave height parameter is extracted, then vortex flow meter gas phase flow is calculated, vortex two-phase over-reading coefficient is calculated, actual gas phase flow is calculated, gas phase apparent flow velocity is calculated, gas phase Weber number is calculated, liquid phase Reynolds number is calculated, and finally actual liquid phase flow is calculated. The application utilizes liquid film disturbance wave height information to correct and compensate over-reading OR of vortex measurement, and establishes a correlation formula of vortex over-reading, gas phase Weber number and liquid phase Reynolds number, and finally obtains gas phase flow and liquid phase flow. The application does not need other complex and expensive gas and liquid phase measurement devices and methods, can measure on line, and has simple, economical and high prediction precision measurement method.

This application discloses a method for processing gas production data of deviated wells in bottom-water gas reservoirs. The method includes: acquiring the mechanical parameters of the target bottom-water gas reservoir, the mechanical parameters including at least rock permeability, liquid viscosity, gas viscosity, liquid pressure, gas pressure, liquid density, and gas density; determining a second Green's formula based on the mechanical parameters, the second Green's formula describing the volume of oil and gas space in the target bottom-water gas reservoir; performing dimensionality reduction processing on the second Green's formula to obtain a first gas production model, and based on the first gas production model, inferring a first reference gas production of the deviated well in the target bottom-water gas reservoir, the first reference gas production describing the critical gas production of the deviated well under ideal production conditions. The technical solution provided by this application can improve the accuracy of inferring the critical gas production of deviated wells in bottom-water gas reservoirs.

According to the invention, a sensor (1) of acoustic waves propagating through a liquid is optically sensitive to variations in the density of the liquid that are produced by pressure variations related to the passage of an acoustic wave. The sensor is designed to be threaded through a wall (102) of a pipe, for example of a water distribution network. The sensor may be used to detect leaks of the liquid at distance from a location of installation of the sensor, or to adjust an intensity of an acoustic wave used to detach a deposit present on a surface making contact with the liquid.

This invention relates to the field of steam generators. To address the problems of large footprint, high manufacturing cost, and difficulty in effectively separating gas and liquid when the density difference between the gas and liquid is small, this invention provides an in-tube evaporation wound-tube steam generator, comprising: a shell, a liquid pipe, a vapor-liquid separator, a return pipe, and a liquid level measuring cylinder. The shell has a heating medium outlet and a heating medium inlet. The liquid pipe is located inside the shell, and a heating medium flow channel is formed between the outer wall of the liquid pipe and the inner wall of the shell. The vapor-liquid separator is connected to the heating medium flow channel. The upper end of the return pipe is connected to the liquid outlet of the vapor-liquid separator. The lower end of the return pipe is connected to the liquid level measuring cylinder. This invention can effectively achieve direct-flow evaporation of the liquid and facilitate convenient operation control. When the heating medium provides insufficient heat, the heat status of the heating medium can be determined by monitoring changes in the liquid level.