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Method of monitoring liquefied gas in a cryogenic liquefied gas tank and a cryogenic tank

A technology for liquefied gas tanks and liquefied gas, applied in container discharge methods, container filling methods, fixed-capacity gas storage tanks, etc., can solve problems such as damage

Active Publication Date: 2021-11-19
WARTSILA FINLAND OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution requires breaking the thermal insulation of the vessel at least at the location of the sensor, which has an undesired effect on the temperature measurement and also leads to unnecessary heat transfer into the vessel

Method used

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  • Method of monitoring liquefied gas in a cryogenic liquefied gas tank and a cryogenic tank
  • Method of monitoring liquefied gas in a cryogenic liquefied gas tank and a cryogenic tank
  • Method of monitoring liquefied gas in a cryogenic liquefied gas tank and a cryogenic tank

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Embodiment Construction

[0042] figure 1 The end of a cryogenic liquefied gas tank 10, which for simplicity may also be referred to as a tank, is shown schematically at the end, for example arranged on a platform 12 of a ship or land-based power plant. In fact, the other end of the liquefied gas tank is substantially identical to the one shown in this figure and is therefore not shown here. figure 1 Also shown is a cross-sectional view of a liquefied gas tank 10 according to one embodiment of the present invention. The liquefied gas tank 10 has a circular cross section and it has a domed end. A cryogenic liquefied gas tank can be used as, for example, a liquefied natural gas tank according to a preferred embodiment of the present invention. It can also be designed as a pressure vessel. The cryogenic liquefied gas tank 10 includes an inner shell 16 which is advantageously stainless steel to withstand the conditions in the tank. The tank space 11 inside the inner casing 16 forms a liquefied gas stor...

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PUM

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Abstract

The invention relates to a method of monitoring liquefied gas in a cryogenic liquefied gas tank (10) having an inner shell (16) and an outer shell (18) and an insulation between the inner and outer shell (18), comprising arranging an array (30) of temperature sensors (31) for measuring temperature of the inner shell (16) wall of the tank (10) on opposite side to a storage space of the tank (10) at different vertical positions (S.1-S.n), reading sensors (31) in the array (30) of temperature sensors (31) obtaining temperature data, performing a validity check of the sensors (31) of the array (30) of temperature sensors (31), in a case a sensor fails the validity check discarding the temperature data from further processing, and by making use of sensors (31) passed the validity check only, determining a state of the gas based on the temperature data. Invention relates also to a cryogenic liquefied gas tank (10) having a computer unit comprising executable instructions which, when executed by a computer, cause the computer to carry out a method of any one of the method claims in connection with a cryogenic liquefied gas tank (10) according to anyone of the apparatus claims.

Description

technical field [0001] The invention relates to a method of monitoring liquefied gas in a cryogenic liquefied gas tank according to the preamble of claim 1 . The invention also relates to a cryogenic liquefied gas tank according to the preambles of the independent device claims. Background technique [0002] The invention relates to the field of storage of liquefied gas in a pressure-resistant tank under cryogenic conditions in a suitable manner and the instrumentation of the tank. With such instrumentation, the physical quantity of the liquefied gas in the liquefied gas tank can be measured and / or recorded. One of the most interesting quantities is the amount of gas in the liquid phase, but it may be desirable to measure other quantities as well. [0003] Radar level gauges are known which measure the distance from the emitter / sensor to the surface of the liquid further below in much the same way as ultrasonic level sensors by measuring the time-of-flight of the traveling...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C3/02F17C3/08
CPCF17C3/02F17C2201/0109F17C2201/035F17C2203/0391F17C3/08F17C2203/0643F17C2250/0417F17C2250/0439F17C2221/033F17C2223/0161F17C2270/01F17C2270/0509F17C13/021F17C13/026F17C2203/0629F17C2250/032G01K15/007
Inventor M·芬尼R·沃尔什
Owner WARTSILA FINLAND OY