System and method for refrigerating superconducting magnet

System and method for refrigerating superconducting magnet

  • CN 102,054,554 B
  • Filed: 10/30/2009
  • Issued: 07/08/2015
  • Est. Priority Date: 10/30/2009
  • Status: Active Grant
First Claim
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1. a refrigerating method for superconducting magnet, this superconducting magnet is applied to MRI system, and is placed in a cryostat, and the method comprises:

  • A gas is introduced the cooling path in described cryostat from described cryostat;

    By the refrigeration machine outside a cryostat by the cools down in described cryostat to low temperature;

    The gas of introducing is become liquid coolant in described cools down;

    Described liquid coolant flows into cooling tube, described cooling tube and described superconducting magnet thermal coupling through one first tube connector from one first opening of cooling tube under self gravitation effect;

    Described liquid coolant absorbs the heat of described superconducting magnet, thus makes described liquid coolant be gasificated as gas;

    The gas gasified by described liquid coolant flows out described cooling tube via one second opening of described cooling tube, described heat exchanger is flow back into again via one second tube connector, and be re-cooled as liquid coolant, described liquid coolant flows to described cooling tube to cool described superconducting magnet further, until described superconducting magnet is cooled below its superconducting temperature through described first tube connector from the first opening of described cooling tube again under self gravitation effect;

    Stop introducing gas in described cooling path, make described cooling path become one and close cooling path;

    By the refrigeration machine outside described cryostat by another cools down in described cryostat to low temperature;

    Another gas is introduced another cooling path in described cryostat from described cryostat, the condensing temperature of this another gas is higher than the condensing temperature of described gas;

    Another gas introduced is become liquid coolant in another cools down described, and makes described liquid coolant flow into a cooling liquid container through a tube connector;

    AndBy one end and described cooling liquid container thermal coupling, the heat at described superconducting magnet place is conducted to the liquid coolant in described cooling liquid container from superconducting magnet to cool described superconducting magnet by the thermal conductive belt of the other end and described superconducting magnet thermal coupling.

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