3 results about "Pressure phases" patented technology

The application discloses a papermaking equipment-oriented Internet of Things fault evolution analysis and maintenance decision method, relates to the technical field of monitoring and analysis, and comprises the following steps: acquiring pressure pulsation data collected by a pressure sensor arranged at the back of a suction box panel and the inlet of a vacuum pump; acquiring acoustic emission data collected by an acoustic emission sensor arranged synchronously with the pressure pulsation data; calculating ultrasonic intensity data according to the acoustic emission data; when the ultrasonic intensity data exceeds a preset intensity threshold, performing phase analysis on the pressure pulsation data to obtain pressure phase angle data; matching the pressure phase angle data with a pre-stored cavitation source phase feature library, if the pressure phase angle data falls within a first predetermined phase angle range, generating first maintenance instruction data, and if the pressure phase angle data falls within a second predetermined phase angle range, generating cleaning instruction data and performing a cleaning operation on the suction box panel. The application has the effect of improving fault evolution analysis efficiency.

The application relates to the technical field of temperature-pressure phase diagram modeling, and discloses a temperature-pressure phase diagram modeling method based on a Grover model, which comprises the following steps: S1: obtaining the thermal expansion coefficient, volume and isothermal bulk modulus thermodynamic data of a rare earth tantalate system under different temperature and pressure conditions; S2: respectively correcting the molar volume and the isothermal compressibility under standard atmospheric pressure, reducing the influence of excessive sensitivity of the heat capacity on the coupling relationship between the temperature and the pressure, so as to realize the correction of the Grover model; and S3: obtaining the Gibbs free energy change through the corrected Grover model state equation, and linearly superimposing the Gibbs free energy change and the Gibbs free energy under standard atmospheric pressure given by a thermodynamic database to obtain a temperature-pressure phase diagram model. The application can ensure the accuracy of the obtained Gibbs free energy, thereby ensuring stable modeling and ensuring the reliability of the phase diagram.

The application relates to a positioning ring fixing support structure of an ultrahigh-pressure phase modifier, and belongs to the electrical engineering technical field of a stator of the ultrahigh-pressure phase modifier. The positioning ring fixing support structure comprises a base, an insulating support plate, a positioning ring one and a positioning ring two. The base is installed on a main water inlet and outlet pipe body pipe. The insulating support plate is connected with the base through fasteners. The insulating support plate has a double-fork structure. The top end of each fork is provided with an arc-shaped groove. The positioning ring one is arranged in the arc-shaped groove of one fork of the insulating support plate and is used for fixing an upper-layer insulating water guide pipe. The positioning ring two is arranged in the arc-shaped groove of the other fork of the insulating support plate and is used for fixing a lower-layer insulating water guide pipe. The base, the insulating support plate, the positioning ring one and the positioning ring two are matched and used for rigidly fixing the upper-layer and lower-layer insulating water guide pipes on the main water inlet and outlet pipe body pipe in a whole mode. The application is favorable for avoiding water joint cracking and water leakage caused by large stress and ensuring the safety and stability of a complex water route in the ultrahigh-pressure phase modifier in long-term operation.