A temperature control device for fixed current leads
A technology of temperature control device and current lead, which is applied in the direction of temperature control, non-electric variable control, control/regulation system, etc. It can solve problems such as burning out diagnostic lines, loss of balance in low-temperature systems, and damage to structures, so as to prevent burnout, The effect of simple temperature control method
Active Publication Date: 2022-06-07
安徽硕金医疗设备有限公司
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Problems solved by technology
[0003] The fixed current lead is a penetrating body from the 4K temperature range to the 300K temperature range in the superconducting magnet. Generally speaking, the resistance of the metal conductor will increase with the increase of the temperature. It will gradually increase the temperature of the fixed current lead itself. Under the action of the lifting field current of five or six hundred amperes, the heating temperature of the fixed current lead varies greatly from the 4K temperature range to the 300K temperature range. If the cooling medium is not considered In the 300K temperature range, the maximum temperature can exceed 800K or even higher, which is not good for the fixed current lead itself, which may damage its structure or burn out the diagnostic circuit, and at the same time make the low temperature system of the entire superconducting magnet out of balance and needs improvement
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Embodiment 1
[0033] Example 1: See Figure 1 , a fixed current lead temperature control device, the temperature control device comprises a computer control system 10, a temperature control system 12, an MMU control box 13, an alarm system 15, ZBO heating power supply 19, a switching heating power supply 18, an excitation power supply 21, an excitation cable 22, a current lead 23, a temperature sensor 27, a temperature sensor 24, a superconducting coil 26, a switching heater 20, a ZBO heater 28, a level gauge 29;
[0034] The computer control system 10 is connected to the MMU control box 13 through the first node 11, the temperature sensor is connected to the first end, the MMU control box 13 is connected to the temperature control system 12 through the second node 14, the alarm system 15, the MMU control box 13 is connected to the third end through the third node 16 ZBO heating power supply 19 first end, level gauge 29, MMU control box 13 fourth end is connected through the fourth node 17 to th...
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The invention discloses a temperature control device and method for a fixed current lead, and relates to the field of current leads. The temperature control device includes a computer control system, a temperature control system, an MMU control box, an alarm system, a ZBO heating power supply, and a switch heating power supply , excitation power supply, excitation cable, current lead, temperature sensor one, temperature sensor two, superconducting coil, switch heater, ZBO heater, liquid level gauge; Compared with the prior art, the beneficial effects of the present invention are: the present invention The temperature of the fixed current lead can be effectively controlled during the lifting and lowering process of the superconducting magnet to prevent burning out of FCL and other electronic circuits; the maximum temperature during the lifting and lowering process of the fixed current lead can be controlled below 300K; Only the low-temperature cold helium gas evaporated from liquid helium is used for cooling, so that the cooling medium is simplified; the temperature control system of the entire fixed current lead can be intelligent; the entire temperature control method is simple and safe.
Description
Technical field [0001] The present invention relates to the field of current leads, specifically a fixed current lead temperature control device. Background [0002] The current leads for low-temperature superconducting magnets (MRIs) can be pluggable or stationary. The plug-in current lead is separated from the superconducting magnet, and only during the lifting field will the positive and negative poles of the plug-in current lead be mechanically connected with the positive and negative poles of the superconducting magnet coil to form a current loop, and the plug-in current lead is not connected to the superconducting magnet when the superconducting magnet is working normally; The fixed current lead (FCL) is as part of the superconducting magnet enclosed inside the superconducting magnet, leaving only the positive and negative terminals of the current lead on the outside, and only the positive and negative poles of the external power supply need to be mechanically connected wit...
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IPC IPC(8): G05D23/20
CPCG05D23/20Y02E40/60
Inventor 金道明卞文龙智德波
Owner 安徽硕金医疗设备有限公司