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Multi-membrane reservoir sealing test

A leak detection and cabin technology, applied in container discharge methods, fluid tightness testing, container filling methods, etc., can solve problems such as difficult to find optical camera thermometers

Active Publication Date: 2012-05-16
GAZTRANSPORT & TECHNIGAZ
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The difficulty with this method, however, is that it is difficult to find optical cameras or thermometers that can work at such low temperatures.

Method used

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  • Multi-membrane reservoir sealing test
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  • Multi-membrane reservoir sealing test

Examples

Experimental program
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Embodiment Construction

[0039] figure 1 Bulkhead 1 is depicted and the mean temperature of the bulkhead is TM. At pressure P the gas comes into contact with the bulkhead 1 as indicated by arrow 2 . If the condensation temperature TC of the gas is higher than the temperature TM, the gas will condense in the form of liquid or solid precipitate 3 . According to this mode, the gas condenses and releases latent heat which is transferred to the bulkhead 1 . This thermal energy transfer is indicated by arrow 4, therefore, the local temperature T of the bulkhead 1 will be higher than TM. When the temperature TM, pressure P and the nature of the gas are controllable, the condensation at this time is called forced condensation.

[0040] Such gases may be:

[0041] A single gas whose inherent physical properties correspond to the ideal condensation temperature.

[0042] A mixture of noncondensable and condensable gases whose concentration can be adjusted to suit the condensation temperature. Specifically,...

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Abstract

Testing method for the sealing of a reservoir, said reservoir comprising a carrier structure (6), a primary membrane (8), intended to be in contact with a product contained in the reservoir, and a secondary membrane (7), placed between the primary membrane and the carrier structure, in which the space between the primary membrane and the secondary membrane is called the primary space (10) and the space between the secondary membrane and the carrier structure is called the secondary space (9), characterized in that it comprises the steps consisting in: injecting an incondensable first gas or one having a condensation temperature below the average temperature of the primary membrane in the primary space; injecting a second gas, having a condensation temperature above the average temperature of the primary membrane in the secondary space; generating an overpressure in the secondary space relative to the primary space; and detecting one or more possible hotspots (22) in the primary membrane.

Description

technical field [0001] The invention relates to a leakage detection method of a multi-membrane cabin body, in particular to a method for detecting the leakage of a sublayer membrane of a multi-membrane cabin body without moving the main layer membrane. Background technique [0002] Multi-membrane cabins are widely used in various industrial fields to contain various gases, liquids or solid materials. This type of cabin includes a load-bearing structure that can provide mechanical rigidity, a main layer of membrane used to contain the products in the cabin, and a secondary layer of membrane arranged between the main layer of membrane and the load-bearing structure. If the main layer of membrane leaks, the The secondary film can also contain the product. [0003] There are currently many methods for testing the airtightness of the sub-layer membrane. If the sub-layer membrane is proved not to meet the specifications during the inspection process, then this layer of membrane m...

Claims

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Application Information

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IPC IPC(8): G01M3/00G01M3/22
CPCG01M3/226G01M3/002F17C3/02F17C13/02G01M3/00G01M3/04
Inventor 朱利安·格洛瑞让·马克·柯内
Owner GAZTRANSPORT & TECHNIGAZ
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