Taiwan Power has filed a patent for a method to measure steam pressure. The method involves providing a steam pressure graph based on temperature and strain, allowing users to determine the steam pressure value inside a target object and identify any steam leakage. GlobalData’s report on Taiwan Power gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Taiwan Power, smart grids was a key innovation area identified from patents. Taiwan Power's grant share as of June 2023 was 1%. Grant share is based on the ratio of number of grants to total number of patents.
Method for measuring steam pressure using temperature and strain
A recently filed patent (Publication Number: US20230168141A1) describes a method for measuring steam pressure. The method involves providing a steam pressure graph that is plotted according to temperature and strain. By looking up the steam pressure graph, the method allows for determining the steam pressure value inside a target object and determining whether a steam leakage occurs in the target object.
In this method, the steam pressure graph is curvilinearly integrated into a target curve diagram. This target curve diagram is derived from a simulated operation using a dummy furnace tube. The dummy furnace tube consists of a furnace tube body, a first cylindrical cover, a second cylindrical cover, a connecting tube, and an inner body. The first and second cylindrical covers are metal structures, while the inner body is a metal tube body separated from the inner wall of the furnace tube body by a distance. The connecting tube is a stainless-steel high-pressure tube.
To record a strain corresponding to a temperature change of the furnace tube body under different steam pressures, the dummy furnace tube is equipped with a thermocouple and a strain gauge. In the simulated operation, the two ends of the dummy furnace tube are closed, pressurizing the pressure inside to an estimated steam pressure and keeping it constant. The outer wall of the dummy furnace tube is heated to simulate the operation of the target object.
The target curve diagram obtained from the simulated operation is used to derive a target formula through curve fitting. This target formula represents the exponential mathematical deformation of metal materials due to different steam pressures with operating temperature.
Overall, this patent presents a method for measuring steam pressure that utilizes a steam pressure graph and a target curve diagram derived from a simulated operation using a dummy furnace tube. By integrating the steam pressure graph into the target curve diagram, the method allows for determining the steam pressure value inside a target object and detecting steam leakage. The use of a thermocouple, strain gauge, and curve fitting further enhances the accuracy of the measurements.
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