CN104753027B - Superconducting magnet and its quenching protection device, the method and magnetic resonance imaging system using the superconducting magnet - Google Patents
Superconducting magnet and its quenching protection device, the method and magnetic resonance imaging system using the superconducting magnet Download PDFInfo
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- CN104753027B CN104753027B CN201310753038.1A CN201310753038A CN104753027B CN 104753027 B CN104753027 B CN 104753027B CN 201310753038 A CN201310753038 A CN 201310753038A CN 104753027 B CN104753027 B CN 104753027B
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Abstract
The invention discloses a kind of quenching protection device of superconducting magnet, the quenching protection device of the superconducting magnet promptly quenches switch, a monitoring unit and an alarm unit including one；The monitoring unit is used to send a hint instructions to the alarm unit according to the urgent state for quenching switch；The alarm unit is used to send an alarm signal according to the hint instructions.Guard method is quenched the invention also discloses a kind of superconducting magnet, including：S1：One hint instructions are sent to an alarm unit according to a urgent state for quenching switch；S2：The alarm unit sends an alarm signal according to the hint instructions.A kind of magnetic resonance imaging system the invention also discloses superconducting magnet using the quenching protection device and using the superconducting magnet.
Description
Technical field
The present invention relates to medical imaging device, more particularly to a kind of superconducting magnet that can be used for magnetic resonance imaging (MRI) and
Its quenching protection device, method and the magnetic resonance imaging system using the superconducting magnet.
Background technology
Magnet is the core component in magnetic resonance imaging (MRI) system, can provide required magnetic field environment for imaging.Mesh
Before, the superconducting magnet in MRI system can generate the high magnetic field of good evenness, stability.Under normal circumstances, repaiied to realize
Reason is safeguarded or changes operating aspect requirement during intentional elimination magnetic field, usually eliminates magnetic field, but this by controlled oblique deascension
The mode that kind eliminates magnetic field needs a period of time and needs appropriate effective control.When being in an emergency, for example, when in order to
It needs to cut off magnetic when preventing from damaging personal or patient and needing to cut off magnetic field or due to the system failure or external action
Device is quenched to make magnet quenching, it is necessary to start during field.
The existing device that quenches generally comprises an at least superconducting coil, at least a heater and at least one switch.It presses
After switch, current flows through heater causes heater to generate heat and by heat transfer to being soaked in superconducting coil in cryogenic liquid, from
And magnetic resonance system is caused promptly to quench.However, device is quenched existing, after lower switch, if nobody is extensive by the switch
Normal position (i.e. the position of non-start up) is arrived again, then the switch will always be in being activated position.This will cause heater always
In heated condition without stopping pregnancy heat amount so that superconducting coil temperature rises, and cryogenic liquid is caused drastically to vaporize and is lost aobvious
The cryogenic liquid of work amount, causes cost to increase.In addition, the temperature of the cryogenic liquid after vaporization is still relatively low, pair may be connect with it
Tactile people damages such as cold burn and even suffocates.
The content of the invention
This invention is intended to provide a kind of quenching protection device and method of the superconducting magnet for saving cooling agent.The present invention is also
It is intended to provide a kind of superconducting magnet using the quenching protection device and the magnetic resonance imaging system using the superconducting magnet.
An embodiment of the present invention provides a kind of quenching protection device of superconducting magnet, the superconducting magnet quenches protection dress
It puts and promptly quenches switch, a monitoring unit and an alarm unit including one；The monitoring unit is used to promptly be quenched according to described
The state of switch sends a hint instructions to the alarm unit；The alarm unit is used to send one according to the hint instructions
Alarm signal.
According to a kind of embodiment, the monitoring unit self-test measure it is described it is urgent quench switch and started postpone one periodically
Between after send the hint instructions.
According to a kind of embodiment, the monitoring unit includes a first detection module and an instruction sending module；It is described
First detection module is used to detect the urgent state for quenching switch, and the testing result is sent to described instruction and sends mould
Block；Described instruction sending module, for judging the testing result, and self-test measures the urgent switch that quenches and has started delay one
The hint instructions are sent after fixing time.
According to a kind of embodiment, described instruction sending module is additionally operable to judge the testing result, and when the urgent mistake
When super switch is closed and the alarm unit sends the alarm signal, a halt instruction is sent to the alarm unit；It is described
Alarm unit is additionally operable to be stopped sending the alarm signal according to the halt instruction.
According to a kind of embodiment, the monitoring unit is used for according to the magnetic field intensity of the superconducting magnet and described tight
The state for suddenly quenching switch sends the hint instructions to the alarm unit.
According to a kind of embodiment, the monitoring unit includes one second detection module and an instruction sending module；It is described
Second detection module be used to detect the superconducting magnet magnetic field intensity and it is described promptly quench the state of switch, and this is detected
As a result it is sent to described instruction sending module；Described instruction sending module, for judging the testing result, and when the magnetic field is strong
Degree is zero and described urgent when quenching switch and starting, and the hint instructions are sent to the alarm unit.
According to a kind of embodiment, described instruction sending module is additionally operable to judge the testing result, and when the magnetic field is strong
Degree is zero, the urgent switch that quenches is closed and when the alarm unit sends the alarm signal, is sent out to the alarm unit
Send a halt instruction；The alarm unit is additionally operable to be stopped sending the alarm signal according to the halt instruction.
According to a kind of embodiment, described instruction sending module is additionally operable to prolong from described instruction sending module is completed to judge
After slow certain time a halt instruction is sent to the alarm unit；The alarm unit is additionally operable to be stopped according to the halt instruction
Only send the alarm signal.
According to a kind of embodiment, second detection module is by detecting the pressure in a cryostat to detect
State magnetic field intensity；Second detection module is by detecting the urgent position for quenching switch or detecting the superconducting magnet
Whether an at least heater runs to detect the urgent state for quenching switch.
According to a kind of embodiment, the alarm signal includes at least one of sounding, luminous and display reminding window
Mode.
A kind of superconducting magnet includes the quenching protection device of above-mentioned superconducting magnet.
A kind of superconducting magnet quenches guard method, including：
S1：One hint instructions are sent to an alarm unit according to a urgent state for quenching switch；
S2：The alarm unit sends an alarm signal according to the hint instructions.
According to a kind of embodiment, in the step S1, self-test measure it is described it is urgent quench switch and started postpone one
The hint instructions are sent after fixing time.
According to a kind of embodiment, the step S1 includes：
The urgent state for quenching switch is detected, judges the testing result, and self-test measures and described promptly quenches switch
Start delay and send the hint instructions after a certain period of time.
According to a kind of embodiment, the step S1 is further included：Judge the testing result, and promptly switch is quenched when described
When closing and the alarm unit transmission alarm signal, a halt instruction is sent to the alarm unit；
The step S2 is further included：The alarm unit stops sending the alarm signal according to the halt instruction.
According to a kind of embodiment, the step S1 is further included：
According at least magnetic field intensity of a superconducting magnet and the urgent state for quenching switch to the alarm unit
Send the hint instructions.
According to a kind of embodiment, the step S1 is further included：
The magnetic field intensity of the superconducting magnet and the urgent state for quenching switch are detected, judges the testing result, and
When the magnetic field intensity be zero and it is described it is urgent quench switch and start when, send the hint instructions to the alarm unit.
According to a kind of embodiment, the step S1 is further included：
Judge the testing result, and when the magnetic field intensity is zero, described urgent quenches that switch is closed and the alarm is single
When member sends the alarm signal, a halt instruction is sent to the alarm unit；
The step S2 is further included：The alarm unit stops sending the alarm signal according to the halt instruction.
According to a kind of embodiment, the step S1 is further included：
From completing to judge a halt instruction is sent to the alarm unit after delay certain time；
The step S2 is further included：The alarm unit stops sending the alarm signal according to the halt instruction.
According to a kind of embodiment, the magnetic field intensity of the detection superconducting magnet in the step S1 is by detection one
Pressure in cryostat is realized；The detection urgent state for quenching switch in the step S1 is to pass through detection
Whether the urgent position for quenching switch or the detection heater run what is realized.
According to a kind of embodiment, the alarm signal includes at least one of sounding, luminous and display reminding window
Mode.
It superconducting magnet and its quenching protection device, method and is total in one embodiment of the invention using the magnetic of the superconducting magnet
It shakes imaging system, monitoring unit can send hint instructions according to the state for promptly quenching switch to alarm unit so that alarm is single
Member sends alarm signal and promptly quenches switch so that operator to be prompted to close；In this way, after superconducting magnet is realized and promptly quenched, can make
Operator closes urgent quench and switchs in order to avoid generating unnecessary heat, and can save cryogenic liquid and prevent cold burn as early as possible
Deng.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow the above and other objects, features and advantages of the present invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and coordinate attached drawing, detailed description are as follows.
Description of the drawings
Fig. 1 is the schematic diagram of superconducting magnet in one embodiment of the invention.
Fig. 2 is the schematic diagram of superconducting magnet in another embodiment of the present invention.
Fig. 3 is the structure diagram of the monitoring unit of superconducting magnet in one embodiment of the invention.
Fig. 4 is the structure diagram of the monitoring unit of superconducting magnet in one embodiment of the invention.
Fig. 5 is the flow diagram for quenching guard method of superconducting magnet in one embodiment of the invention.
Wherein, reference numeral includes：
100 superconducting magnet, 110 cryostat, 112 coil
113 coil, 114 coil, 115 coil
116 heater, 117 heater, 118 heater
119 heater, 120 power supply device 130 promptly quenches switch
131 start button, 140 monitoring unit, 141 first detection module
142 second detection module, 146 instruction sending module, 150 alarm unit
151 ACK button, 180 display
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
Fig. 1 show the schematic diagram of superconducting magnet 100 in one embodiment of the invention.As shown in fig. 1, superconducting magnet 100
Including a cryostat 110, multiple superconducting coil 112-115, multiple heater 116-119, a power supply device 120,
One promptly quenches switch 130, a monitoring unit 140, an alarm unit 150.It should be noted that superconducting magnet 100 further includes
Other feature, such as electrical connection, mechanical support, for simplicity without being shown in the drawings.
Wherein, cryogenic liquid is included in cryostat 110.
Coil 112-115 can be placed on cryostat according to well known to a person skilled in the art any appropriate modes
It in 110 and couples, to realize desired function.For example, coil 112-115 may be provided in cryostat 110 and impregnate
In cryogenic liquid.
Resistive heater may be employed in heater 116-119, and associated with coil 112-115 respectively.Heater
116-119 can be wired individually to be powered or according to design and/or functional requirement with series, parallel or series/parallel group
The mode of conjunction is wired.Preferably, each heater 116/117/118/119 is associated with a coil 112/113/114/115,
For example, heater 116-119 can respectively with coil 112-115 close thermal contacts.
Power supply device 120 provides electric energy for one or more into heater 116-119, is quenched so as to start.
In one embodiment, power supply device 120 can include at least one of power supply, battery and electric energy generation device.Electric energy
Generation device can be simple generator.
The urgent switch 130 that quenches is the artificial control that active is forced to quench switch, is supplied and filled with power supply respectively by conducting wire
120 are put to connect with heater 116-119.Urgent quench has a start button 131 on switch 130, for there are urgent feelings
During condition, for example, when being damaged in order to prevent to personal or patient and need to cut off magnetic field or due to the system failure or outside
When influencing and needing to cut off magnetic field, startup quenches.Specifically, start button 131 is operated so that power supply device 120 and heating
Device 116-119 connect, electric current from power supply device 120 flow into heater 116-119 cause heater 116-119 generate heat and incite somebody to action
Heat transfer gives coil 112-115, is quenched so as to start.After start button 131 is activated, if nobody is extensive by start button 131
Normal position (close and promptly quench switch 130) is arrived again, then start button 131 will always be in being activated position.
Alarm unit 150 is connected with monitoring unit 140, for receiving the hint instructions and root of the transmission of monitoring unit 140
An alarm signal is sent according to hint instructions.Alarm signal includes at least one of sounding, luminous and display reminding window mode.
In one embodiment, as shown in Figure 1, alarm unit 150 may include ACK button 151.In one embodiment, ACK button is started
151 can make the stopping of alarm unit 150 send alarm signal.In other embodiments, even if operator can be set to start alarm
ACK button 151 on unit 150, alarm unit 150 will not stop sending alarm, and only alarm unit 150 receives monitoring
Just stop sending alarm signal during the halt instruction that unit 140 is sent.
In addition, in 100 operational process of superconducting magnet, it is understood that there may be a variety of situations need alarm unit 150 to send alarm
Sound in order to distinguish different situations, can further set different alarms to represent different feelings in alarm unit 150
Condition.Represent that the excessively high situation of temperature, setting send Alarm sound and represent Low Temperature Liquid for example, can set and send " warning " sound
The horizontal too low situation of body and setting send " urgent " sound and represent that startup promptly quenches situation etc..
Furthermore as shown in Fig. 2, alarm unit 150 may include a display 180.Display 180 connects with monitoring unit 140
It connects, for the hint instructions for receiving the transmission of monitoring unit 140 and according to hint instructions display reminding window.
Monitoring unit 140 is used to send hint instructions to alarm unit 150 according to the state for promptly quenching switch 130.
In one embodiment, monitoring unit 140 can self-test measure it is urgent quench switch 130 and started postpone after a certain period of time
Send hint instructions.In specific implementation, as shown in figure 3, monitoring unit 140 includes a first detection module 141 and an instruction
Sending module 146；
First detection module 141 is used to detect the state for promptly quenching switch 130, and the testing result is sent to instruction
Sending module 146；
Instruction sending module 146 is for judging the testing result, and when promptly quenching 130 startup of switch, delay is certain
Hint instructions are sent after time.
Wherein, the time of delay may be set according to actual conditions, for example, can be realized according to superconducting magnet 100 promptly
Required time setting is quenched, such as can be 20s.In this way, after urgent quench is realized, instruction sending module 146 can be immediately
Hint instructions are sent to alarm unit 150 so that alarm unit 150 sends alarm signal to prompt operator by start button
131 are restored to normal position (close and promptly quench switch 130), stop heating so as to disable heater 116-119, in order to avoid
Unnecessary heat is generated, and cryogenic liquid can be saved and prevent cold burn.
In addition, instruction sending module 146 is additionally operable to judge the testing result, and it ought promptly quench switch 130 and close and report
When alert unit 150 sends alarm signal, halt instruction is sent to alarm unit 150；Alarm unit 150 is additionally operable to be referred to according to stopping
Order stops sending alarm signal.In this way, after closing promptly quenches switch 130, you can alarm unit 150 is made to stop transmission and is alarmed
Signal.
In another embodiment, monitoring unit 140 is used for the magnetic field intensity according to superconducting magnet 112-115 and urgent mistake
The state of super switch 130 sends hint instructions to alarm unit 150.In specific implementation, as shown in figure 4, monitoring unit 140 can
Including one second detection module 142 and an instruction sending module 146.
Second detection module 142 is used to detect the magnetic field intensity of superconducting magnet 112-115 and promptly quenches the shape of switch 130
State, and the testing result is sent to instruction sending module 146；
Instruction sending module 146 is for judging the testing result, and when magnetic field intensity is zero and urgent quench switchs 130 and open
When dynamic, hint instructions are sent to alarm unit 150.
Wherein, the second detection module 142 can detect magnetic field intensity by detecting the pressure in a cryostat 110；
For example, when the pressure detected is more than certain threshold value, instruction sending module 146 can determine whether out that magnetic field intensity is zero.Second
Detection module 142 can promptly quench the position of switch 130 by detecting or whether detection heater 116-119 is heated to detect
The urgent state for quenching switch 130.
In this way, after urgent quench is realized, i.e., when magnetic field intensity, which is zero, and promptly quenches switch 130 starts, instruction is sent out
Send module 146 that can send hint instructions to alarm unit 150 immediately so that alarm unit 150 sends alarm signal to prompt to grasp
Start button 131 is restored to normal position (close and promptly quench switch 130) by author, so as to disable heater 116-119
Stop heating, in order to avoid generating unnecessary heat, and cryogenic liquid can be saved and prevent cold burn.
In addition, instruction sending module 146 is additionally operable to judge the testing result, and when magnetic field intensity is zero, promptly quenches out
When closing 130 closings and the transmission alarm signal of alarm unit 150, halt instruction is sent to alarm unit 150；Alarm unit 150 is also
For being stopped sending the alarm signal according to the halt instruction.In addition, instruction sending module 146 is additionally operable to send from instruction
Module 146 completion judged delay certain time after to alarm unit 150 transmission halt instruction；Alarm unit 150 is additionally operable to root
Stop sending alarm signal according to halt instruction.In this way, after closing promptly quenches switch 130, can stop from command of execution alarm unit 150
Only send alarm signal.
In the foregoing description, switch 130, monitoring unit 140 and alarm unit 150 are promptly quenched for carrying out superconducting magnet
100 quench protection, therefore, are properly termed as the quenching protection device of superconducting magnet 100.
Fig. 5 show the flow diagram for quenching guard method of superconducting magnet in one embodiment of the invention.The superconducting magnetic
Body quenches guard method and can be realized by the structure in Fig. 1 to Fig. 4, below in conjunction with Fig. 1 to Fig. 4 and illustrates the superconducting magnetic
Body quenches guard method.The guard method that quenches of the superconducting magnet may include：
S1：One hint instructions are sent to an alarm unit 150 according to a urgent state for quenching switch 130；
S2：Alarm unit 150 sends an alarm signal according to hint instructions.
In one embodiment, in step sl, self-test measure it is urgent quench switch 130 and started postpone to send out after a certain period of time
Go out hint instructions.In specific implementation, step S1 may include：
The state for promptly quenching switch 130 is detected, judges the testing result, and when promptly quenching 130 startup of switch, from
Detect it is urgent quench switch 130 and started postpone to send hint instructions after a certain period of time.
Wherein, the time of delay may be set according to actual conditions, for example, can according to realize promptly quench required when
Between set, such as can be 20s.In this way, after urgent quench is realized, can hint instructions be sent to alarm unit 150 immediately, made
It obtains alarm unit 150 and sends alarm signal to prompt operator that closing promptly quenches switch 130, so as to disable heater 116-
119 stop heating, in order to avoid generating unnecessary heat, and can save cryogenic liquid and prevent cold burn.
In addition, step S1 is further included：Judge the testing result, and ought promptly quench 130 closing of switch and alarm unit 150
When sending alarm signal, a halt instruction is sent to alarm unit 150；Step S2 is further included：Alarm unit 150 refers to according to stopping
Order stops sending alarm signal.In this way, after closing promptly quenches switch 130, you can alarm unit 150 is made to stop transmission and is alarmed
Signal.
In another embodiment, step S1 is further included：According at least magnetic field intensity of a superconducting magnet 112-115 and tightly
The state for suddenly quenching switch 130 sends hint instructions to alarm unit 150.In specific implementation, step S1 may include：
The magnetic field intensity of detection superconducting magnet 112-115 and the state for promptly quenching switch 130, judge the testing result,
And when magnetic field intensity is zero and promptly quenches 130 startup of switch, hint instructions are sent to alarm unit 150.
Wherein, the magnetic field intensity of the detection superconducting magnet 112-115 in step S1 can be by detecting a cryostat 110
Interior pressure is realized；For example, when the pressure detected is more than certain threshold value, can determine whether out magnetic field intensity is zero.Step
The state that detection in rapid S1 promptly quenches switch 130 can promptly quench the position of switch 130 or detection heater by detecting
Whether 116-119 runs what is realized.
In this way, after urgent quench is realized, i.e., it, can be immediately when magnetic field intensity, which is zero, and promptly quenches switch 130 starts
Hint instructions are sent to alarm unit 150 so that alarm unit 150 sends alarm signal and promptly quenched so that operator to be prompted to close
Switch 130 stops heating so as to disable heater 116-119, in order to avoid generating unnecessary heat, and can save cryogenic liquid
And prevent cold burn.
In addition, step S1 is further included：
Judge the testing result, and when magnetic field intensity is zero, urgent quenches that switch 130 is closed and alarm unit 150 is sent
During alarm signal, a halt instruction is sent to alarm unit 150；
Step S2 is further included：Alarm unit 150 stops sending alarm signal according to halt instruction.
In addition, step S1 is further included：
From completing to judge a halt instruction is sent to alarm unit 150 after delay certain time；
Step S2 is further included：Alarm unit 150 stops sending alarm signal according to halt instruction.
In this way, after closing promptly quenches switch 130, can stop sending alarm signal from command of execution alarm unit 150.
Above-mentioned superconducting magnet 100 can be used in a magnetic resonance imaging system, and required magnetic field environment is provided for imaging.
It is above-mentioned for superconducting magnet in one embodiment of the invention and its quenching protection device, method and to use the superconducting magnet
Magnetic resonance imaging system, monitoring unit 140 can according to promptly quench switch 130 state send prompting to alarm unit 150
Instruction so that alarm unit 150 sends alarm signal and promptly quenches switch 130 so that operator to be prompted to close；In this way, in superconducting magnetic
Body 100 realize it is urgent after quenching, can make operator close as early as possible it is urgent quench switch 130 in order to avoid generating unnecessary heat, and
Cryogenic liquid can be saved and prevent cold burn.
In conclusion the invention discloses a kind of quenching protection device of superconducting magnet, the superconducting magnet quenches guarantor
Protection unit promptly quenches switch, a monitoring unit and an alarm unit including one；The monitoring unit is used for according to described urgent
The state for quenching switch sends a hint instructions to the alarm unit；The alarm unit is used to be sent out according to the hint instructions
Send an alarm signal.Guard method is quenched the invention also discloses a kind of superconducting magnet, including：S1：It is promptly quenched according to one
The state of switch sends a hint instructions to an alarm unit；S2：The alarm unit sends a report according to the hint instructions
Alert signal.It is total to the invention also discloses a kind of superconducting magnet using the quenching protection device and using the magnetic of the superconducting magnet
It shakes imaging system.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (18)
1. a kind of quenching protection device of superconducting magnet, which is characterized in that the quenching protection device of the superconducting magnet includes one
Promptly quench switch (130), a monitoring unit (140) and an alarm unit (150)；
The monitoring unit (140), for according to the urgent state for quenching switch (130) to the alarm unit (150)
Send a hint instructions；
The alarm unit (150), for sending an alarm signal according to the hint instructions,
Monitoring unit (140) self-test measure it is described it is urgent quench switch (130) and started postpone to send institute after a certain period of time
State hint instructions,
The monitoring unit (140) includes a first detection module (141) and an instruction sending module (146)；
The first detection module (141), for detect it is described promptly quench the state of switch (130), and testing result is sent out
Give described instruction sending module (146)；
Described instruction sending module (146) for judging the testing result, and is detected from the first detection module (141)
It is described it is urgent quench switch (130) and started postpone to send the hint instructions after a certain period of time.
2. the quenching protection device of superconducting magnet according to claim 1, which is characterized in that described instruction sending module
(146), it is additionally operable to judge the testing result, and switch (130) closing and the alarm unit (150) hair is promptly quenched when described
When sending the alarm signal, a halt instruction is sent to the alarm unit (150)；
The alarm unit (150) is additionally operable to be stopped sending the alarm signal according to the halt instruction.
3. the quenching protection device of superconducting magnet according to claim 1, which is characterized in that the monitoring unit (140),
For the magnetic field intensity according to the superconducting magnet (112-115) and the urgent state for quenching switch (130) to described
Alarm unit (150) sends the hint instructions.
4. the quenching protection device of superconducting magnet according to claim 3, which is characterized in that the monitoring unit (140)
Including one second detection module (142) and an instruction sending module (146)；
Second detection module (142), for detecting the magnetic field intensity of the superconducting magnet (112-115) and the urgent mistake
The state of super switch (130), and the testing result is sent to described instruction sending module (146)；
Described instruction sending module (146), for judging the testing result, and when the magnetic field intensity is zero and the urgent mistake
When super switch (130) starts, the hint instructions are sent to the alarm unit (150).
5. the quenching protection device of superconducting magnet according to claim 4, which is characterized in that described instruction sending module
(146), it is additionally operable to judge the testing result, and when the magnetic field intensity is zero, described urgent quenches switch (130) closing and institute
When stating alarm unit (150) the transmission alarm signal, a halt instruction is sent to the alarm unit (150)；
The alarm unit (150) is additionally operable to be stopped sending the alarm signal according to the halt instruction.
6. the quenching protection device of superconducting magnet according to claim 4, which is characterized in that described instruction sending module
(146), it is additionally operable to from described instruction sending module (146) completes the judgement after delay certain time to the alarm unit
(150) halt instruction is sent；
The alarm unit (150) is additionally operable to be stopped sending the alarm signal according to the halt instruction.
7. the quenching protection device of superconducting magnet according to claim 4, which is characterized in that second detection module
(142) magnetic field intensity is detected by detecting the pressure in a cryostat (110)；Second detection module
(142) by detecting the urgent position for quenching switch (130) or detecting an at least heater (116- for the superconducting magnet
119) whether run to detect the urgent state for quenching switch (130).
8. the quenching protection device of superconducting magnet according to claim 1, which is characterized in that the alarm signal includes hair
At least one of sound, luminous and display reminding window mode.
9. a kind of superconducting magnet (100), which is characterized in that the superconducting magnet (100) is included as any in claim 1 to 8
Quenching protection device described in one.
10. a kind of magnetic resonance imaging system, which is characterized in that including superconducting magnet as claimed in claim 9.
11. a kind of superconducting magnet quenches guard method, including：
S1：One hint instructions are sent to an alarm unit (150) according to a urgent state for quenching switch (130)；
S2：The alarm unit (150) sends an alarm signal according to the hint instructions,
In the step S1, self-test measures described urgent quench described in switch (130) started and postpone to send after a certain period of time
Hint instructions,
The urgent state for quenching switch (130) is detected, judges testing result, and self-test measures and described promptly quenches switch
(130) start delay and send the hint instructions after a certain period of time.
12. superconducting magnet according to claim 11 quenches guard method, which is characterized in that the step S1 is also wrapped
It includes：Judge the testing result, and switch (130) closing and the alarm unit (150) the transmission report are promptly quenched when described
During alert signal, a halt instruction is sent to the alarm unit (150)；
The step S2 is further included：The alarm unit (150) stops sending the alarm signal according to the halt instruction.
13. superconducting magnet according to claim 11 quenches guard method, which is characterized in that the step S1 is also wrapped
It includes：
According to the magnetic field intensity of an at least superconducting magnet (112-115) and the urgent state for quenching switch (130) to institute
It states alarm unit (150) and sends the hint instructions.
14. superconducting magnet according to claim 13 quenches guard method, which is characterized in that the step S1 is also wrapped
It includes：
The magnetic field intensity of the superconducting magnet (112-115) and the urgent state for quenching switch (130) are detected, judges the inspection
Survey as a result, and when the magnetic field intensity be zero and it is described it is urgent quench switch (130) startup when, to the alarm unit (150)
Send the hint instructions.
15. superconducting magnet according to claim 14 quenches guard method, which is characterized in that the step S1 is also wrapped
It includes：
Judge the testing result, and when the magnetic field intensity is zero, it is described it is urgent quench switch (130) close and the alarm singly
When first (150) send the alarm signal, a halt instruction is sent to the alarm unit (150)；
The step S2 is further included：The alarm unit (150) stops sending the alarm signal according to the halt instruction.
16. superconducting magnet according to claim 14 quenches guard method, which is characterized in that the step S1 is also wrapped
It includes：
From being completed the judgement a halt instruction is sent to the alarm unit (150) after delay certain time；
The step S2 is further included：The alarm unit (150) stops sending the alarm signal according to the halt instruction.
17. superconducting magnet according to claim 14 quenches guard method, which is characterized in that the inspection in the step S1
The magnetic field intensity for surveying the superconducting magnet (112-115) is realized by detecting the pressure in a cryostat (110)；
Detection in the step S1 urgent state for quenching switch (130) is described promptly to quench switch (130) by detecting
Position or detection heater (116-119) whether run what is realized.
18. superconducting magnet according to claim 11 quenches guard method, which is characterized in that the alarm signal includes
At least one of sounding, luminous and display reminding window mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310753038.1A CN104753027B (en) | 2013-12-31 | 2013-12-31 | Superconducting magnet and its quenching protection device, the method and magnetic resonance imaging system using the superconducting magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310753038.1A CN104753027B (en) | 2013-12-31 | 2013-12-31 | Superconducting magnet and its quenching protection device, the method and magnetic resonance imaging system using the superconducting magnet |
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| Publication Number | Publication Date |
|---|---|
| CN104753027A CN104753027A (en) | 2015-07-01 |
| CN104753027B true CN104753027B (en) | 2018-05-18 |
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| EP3407081A1 (en) * | 2017-05-22 | 2018-11-28 | Koninklijke Philips N.V. | Magnetic resonance imaging system with emergency quench |
| CN108023334B (en) * | 2017-12-27 | 2019-11-26 | 上海联影医疗科技有限公司 | Superconducting magnet quenches protection system and magnetic resonance system |
| CN112904248A (en) * | 2021-01-22 | 2021-06-04 | 上海交通大学 | Quench detection device and quench detection method for uninsulated high-temperature superconducting coil |
| CN114783717A (en) * | 2022-06-17 | 2022-07-22 | 山东奥新医疗科技有限公司 | Magnetic resonance system and quench protection device of superconducting magnet thereof |
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