IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0753789
(2004-01-08)
|
우선권정보 |
GB-0303936.9(2003-02-21) |
발명자
/ 주소 |
- Peacey,David John
- Phillips,Robert John
|
출원인 / 주소 |
- Honeywell Normalair Garret (Holdings) Limited
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
13 |
초록
▼
A method of testing a system including a plurality of modules, each of which in use, produces from an air supply, a product gas which is one of oxygen gas and oxygen enriched gas, the method including providing to an inlet to at least one of the modules, when the module is not in use, a restricted a
A method of testing a system including a plurality of modules, each of which in use, produces from an air supply, a product gas which is one of oxygen gas and oxygen enriched gas, the method including providing to an inlet to at least one of the modules, when the module is not in use, a restricted air supply, and at an outlet of the module, sensing at least one of the oxygen concentration and product gas pressure, and analysing the sensed oxygen concentration and/or product gas pressure during a test period to determine the potential performance of the module in use.
대표청구항
▼
What is claimed is: 1. A method of testing a system including a plurality of modules, each of which produces a product gas from an air supply, wherein the product gas is one of oxygen gas and oxygen enriched gas, the method including providing a restricted air supply to an inlet to at least one of
What is claimed is: 1. A method of testing a system including a plurality of modules, each of which produces a product gas from an air supply, wherein the product gas is one of oxygen gas and oxygen enriched gas, the method including providing a restricted air supply to an inlet to at least one of the modules, when the module is being tested, monitoring each of oxygen concentration and product gas pressure over a test period at an outlet of the module, and comparing the monitored oxygen concentration and product gas pressure over the test period with an expected performance of the at least one module over the test period to determine the potential performance of the module in use. 2. A method according to claim 1 wherein the module includes a bed of molecular sieve bed material which adsorbs nitrogen gas from the air supply, and after the test period, the module under test, is vented, to cleanse the bed. 3. A method according to claim 1 wherein where the module includes a bed of molecular sieve bed material, the air supply is a pressurised air supply, and the bed is vented after the test period, to a lower pressure environment. 4. A method according to claim 1 wherein the method includes testing the one module or a set of modules, and then subsequently testing another module or set of modules. 5. A method according to claim 1 wherein during the test period, the product gas produced passes from the module via a metering device to maintain pressure within the module. 6. A method according to claim the 5 wherein during the test period, the product gas is passed via the metering device to a lower pressure environment. 7. A method according to claim 1 wherein the method includes supplying to the selected module, a metered air supply during the test period, so that the actual sensed oxygen concentration and pressure of the product gas is compared with results expected for that metered air supply. 8. A method according to claim 7 wherein metering is achieved locally of the inlet of the module by partially opening only, an inlet valve. 9. A method according to claim 7 wherein, a metering valve is provided upstream of the inlet of the module, so that a common metered supply is provided to each of the modules of the system, for testing each of the modules. 10. A system including a plurality of modules, each of which produces a product gas which is one of oxygen gas and oxygen enriched gas from an air supply, a metering device for metering the air supply to provide a restricted air supply to at least one of the modules for testing, a sensor for sensing the concentration of oxygen in the product gas produced from the restricted air supply during a test period, and a sensor for sensing the pressure of the product gas produced from the restricted air supply during the test period, and there being an analysing apparatus to compare the sensed oxygen concentration and sensed pressure of the product gas over the test period with an expected performance of the at least one of the module to determine the potential performance of the module in use. 11. A method of testing a system including a plurality of modules, each of which in use, produces from an air supply, a product gas which is one of oxygen gas and oxygen enriched gas, the method including operating a selected one of the modules with a first module or a first set of the remaining modules by providing to inlets of the selected module and the first module or the modules of the first set, an air supply, sensing a parameter of the product gas, produced by the selected module and the first module or modules of the first set of modules, operating the selected module with a second module or a second set of the remaining modules, the second module or modules of the second set being different from the first module or modules of the first set, and sensing the parameter of the product gas produced by the selected module and the second module or the modules of the second set, and comparing the parameter sensed with the parameter sensed while the selected module is operated with the first module or first set of modules, to determine the performance of the selected module. 12. A method according to claim 11 wherein where the system includes N modules, a first and a second module being operated together, then the second and a third and so on up until the Nth and first module being operated together. 13. A method according to claim 11 wherein the parameter sensed is one of oxygen concentration in the product gas, and product gas pressure. 14. A method according to claim 11 wherein the method is performed during normal operation of the system. 15. A method according to claim 11 wherein the method is performed repeatedly, selecting a different module sequentially, whereby the analysis identifies any module which is underperforming where the method is a specific test, or is underperforming in use. 16. A method according to claim 11 wherein the method is performed subsequently to a higher level test as a result of which a group of the modules is identified which includes at least one underperforming module. 17. A method according to claim 11 wherein the method is performed as a specific test method and includes providing to the inlets to the selected module and the first module or first set of the remaining modules, when the modules are not in use, a restricted air supply, and at outlet or outlets of the modules, sensing the parameter, and subsequently providing to the inlets to the selected module and the second module or second set of remaining modules, the restricted air supply, and at an outlet or outlets from the modules, sensing the parameter, and comparing the respective parameters sensed. 18. A method according to claim 17 wherein the air supply is restricted by metering the product gas to restrict the flow of product gas from the system, thereby to maintain a high pressure in the system.
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