Monitoring method and cooling system
AssigneeSumitomo Heavy Industries, Ltd.
InventorsJyunya Hamasaki, Toru Maruyama
Life of this patent
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Abstract
A cooling system is provided with a refrigerator using helium gas, a compressor that compresses the helium gas returned from the refrigerator and supplies the gas to the refrigerator, and a control unit. The control unit includes a measurement acquisition unit that acquires measurements of a plurality of different parameters representing a status of the refrigerator, or the compressor, or both, and an analysis unit that conducts multivariate analysis of the measurements acquired by the measurement acquisition unit.
Claims9
A monitoring method for a cooling system, wherein the cooling system comprises:
- a refrigerator configured to use gas;
- and
- a compressor configured to supply the gas to the refrigerator and to generate compression heat by compressing the gas returned from the refrigerator, wherein the compressor comprises a water-cooled heat exchanger that is configured to:
- (i) flow cooling water from a cooling water receiving port through a cooling water pipe,
- (ii) transfer the compression heat from the oil flowing in an oil cooling pipe to the cooling water flowing in the cooling water pipe in a manner that heats the cooling water flowing in the cooling water pipe, and
- (iii) discharge the cooling water heated by the compression heat from the cooling water pipe through a cooling water discharge port to outside the compressor,
- the method comprising:
- acquiring, by using a cooling water temperature sensor, first measurements that include a cooling water temperature of the cooling water discharged from the cooling water discharge port and, by using an oil temperature sensor, second measurements that include at least one parameter representing a status of the refrigerator, or the compressor, or both;
- conducting multivariate analysis of the acquired first and second measurements;
- determining whether an alert on a failure should be communicated to a user, based on a result of the multivariate analysis;
- and
- alerting the user to the failure when a determination has been made that the user would be notified.
A cooling system comprising:
- a refrigerator that uses gas;
- a compressor configured to supply the gas to the refrigerator and to generate compression heat by compressing the gas returned from the refrigerator, the compressor comprising a water-cooled heat exchanger that is configured to:
- (i) flow cooling water from a cooling water receiving port through a cooling water pipe,
- (ii) transfer the compression heat from oil flowing in an oil cooling pipe to the cooling water flowing in the cooling water pipe in a manner that heats the cooling water flowing in the cooling water pipe, and
- (iii) discharge the cooling water heated by the compression heat from the cooling water pipe through a cooling water discharge port to outside the compressor,
- a cooling water temperature sensor configured to measure a cooling water temperature of the cooling water discharged from the cooling water discharge port;
- a further cooling water temperature sensor configured to measure a cooling water temperature of the cooling water received from the cooling water receiving port, and
- a control unit that comprises:
- (a) an analysis unit that conducts multivariate analysis of measurements measured by the cooling water temperature sensor and the further cooling water temperature sensor;
- (b) an alert determination unit that determines whether an alert on a failure should be communicated to a user, based on a result of the multivariate analysis;
- and
- (c) an alert communication unit that alerts the user to the failure when a determination has been made that the user should be notified.
Dependencies are inferred from the claim text.