Monitoring system for a mobile storage tank
First Claim
1. A remote monitoring system for a mobile storage tank having a product container for storing a liquefied gas at cryogenic temperatures, said remote monitoring system comprising:
- a sensor system to generate level signals referable to a liquid level of a liquid phase of said liquefied gas and pressure signals referable to vapor pressure of a vapor phase of said liquefied gas within said product container;
a global positioning system connected to said mobile storage tank to generate global position signals referable to a global position of said mobile storage tank in global latitude and longitude coordinates; and
a remote telemetry unit on board said mobile storage tank and responsive to said level signals, pressure signals and global position signals to store data records containing data referable to the liquid level and vapor pressure within said product container and the global latitude and longitude coordinates and to effect a wireless transmission of said data records and a unique remote telemetry unit identification in a standard message structure.
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Accused Products
Abstract
A remote monitoring system for a mobile storage tank having a product container in which a remote telemetry unit gathers liquid level and head space pressure data and global position data. The remote telemetry unit effects a wireless transmission of a standard message structure containing the pressure and level data and the global position data. In addition, in case of a storage tank having a thermal shield fluid, pressure and level data for the shield fluid itself may also be in the standard data record as well as acceleration data from an accelerometer to indicate tank damage. If upset conditions of pressure and liquid level are reached in the thermal shield and/or product container, vapor may be vented in accordance with preset programming in order to attempt to reestablish liquid level and vapor pressure above set points.
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Citations
11 Claims
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1. A remote monitoring system for a mobile storage tank having a product container for storing a liquefied gas at cryogenic temperatures, said remote monitoring system comprising:
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a sensor system to generate level signals referable to a liquid level of a liquid phase of said liquefied gas and pressure signals referable to vapor pressure of a vapor phase of said liquefied gas within said product container;
a global positioning system connected to said mobile storage tank to generate global position signals referable to a global position of said mobile storage tank in global latitude and longitude coordinates; and
a remote telemetry unit on board said mobile storage tank and responsive to said level signals, pressure signals and global position signals to store data records containing data referable to the liquid level and vapor pressure within said product container and the global latitude and longitude coordinates and to effect a wireless transmission of said data records and a unique remote telemetry unit identification in a standard message structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification