CN219246491U - Time-varying gradient magnetic field generation system - Google Patents
Time-varying gradient magnetic field generation system Download PDFInfo
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- CN219246491U CN219246491U CN202223262181.4U CN202223262181U CN219246491U CN 219246491 U CN219246491 U CN 219246491U CN 202223262181 U CN202223262181 U CN 202223262181U CN 219246491 U CN219246491 U CN 219246491U
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- magnetic field
- water cooling
- water
- current amplifier
- field generator
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Abstract
The utility model discloses a time-varying gradient magnetic field generating system, which consists of a water cooling area, a magnetic field measurement and control area and a terminal area, wherein the water cooling area comprises a water cooling module, the water cooling module is communicated with the magnetic field measurement and control area, the magnetic field measurement and control area consists of a high-power current amplifier, a magnetic field generator and a magnet state monitoring module, the magnet state monitoring module is connected with the magnetic field generator, two sides of the magnetic field generator are provided with water cooling layers, one end of the magnetic field generator is connected with the high-power current amplifier, one side of the high-power current amplifier is provided with a water cooling loop, the water cooling loop and the water cooling layer are communicated with the water cooling module through an adjusting component, the terminal area consists of a control terminal and a signal source, the magnet state monitoring module is electrically connected with the control terminal, and the high-power current amplifier is electrically connected with the signal source.
Description
Technical Field
The utility model belongs to the technical field of implant magnetic resonance gradient field testing, and particularly relates to a time-varying gradient magnetic field generation system.
Background
At present, an active implant is likely to generate heat and cause circuit faults under the action of a gradient magnetic field of magnetic resonance, which is an important potential safety hazard threatening the life safety of a patient. Has important significance for the performance test of active implanted medical equipment under the magnetic resonance gradient field. Currently, implant magnetic resonance gradient field test solutions are tested directly on the whole magnetic resonance machine, the method has extremely high requirements on equipment (the test party needs to have the whole magnetic resonance equipment), and the additional powerful static magnetic field can limit the test equipment and also can possibly introduce the interference of the static magnetic field
However, the device of the method has high heat generation and is easy to damage the machine, so that the machine cannot be used normally, the cost of the device is high, and the device cannot be widely popularized.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a time-varying gradient magnetic field generation system to solve the problems in the background art.
In order to achieve the above purpose, the utility model is realized by the following technical scheme: a time-varying gradient magnetic field generation system consists of a water cooling area, a magnetic field measurement and control area and a terminal area;
the water cooling area comprises a water cooling module;
the water cooling module is communicated with a magnetic field measurement and control area, and the magnetic field measurement and control area consists of a high-power current amplifier, a magnetic field generator and a magnet state monitoring module;
the magnetic body state monitoring module is connected with the magnetic field generator, water cooling layers are arranged around the magnetic field generator, one end of the magnetic field generator is connected with the high-power current amplifier, one side of the high-power current amplifier is provided with a water cooling loop, and the water cooling loop and the water cooling layers are communicated with the water cooling module through the adjusting component;
the terminal area comprises control terminal and signal source, and magnet state monitoring module and control terminal electric connection give the water-cooling module through control terminal sending signal, and the water-cooling module can control water-cooling return circuit and water-cooling layer and supply water, and high-power current amplifier electric connection signal source, release through control terminal control current.
In some embodiments, the regulating assembly comprises a switch valve, one end of the switch valve is communicated with the water cooling module, one end of the switch valve is connected with a flowmeter, and the flowmeter is communicated with the water cooling layer and the water cooling loop.
In some embodiments, the magnetic field generator comprises a bottom plate, a magnet is mounted on the bottom plate, a double-layer litz coil is arranged inside the magnet and used for generating a magnetic field with high uniformity, and a top plate is arranged on the outer top of the double-layer litz coil.
In some embodiments, a separate on-off valve and flow meter are provided on the top plate.
In some embodiments, a plurality of thermocouples are arranged between the top plate and the bottom plate, and the plurality of thermocouples are circumferentially distributed with the litz coil axis.
In some embodiments, a separate on-off valve 5 and flow meter are provided on the high power current amplifier.
The utility model provides a time-varying gradient magnetic field generation system, which has the following beneficial effects:
according to the time-varying gradient magnetic field generation system, a plurality of thermocouples are buried around the litz coil, and the temperature of a magnet is monitored in real time; the device is used for two heating components: the high-power current amplifier and the magnet coil are respectively provided with an independent switch valve and a flowmeter, flow is monitored in real time, flow is prevented from being insufficient, components generate heat, monitoring accuracy and independence are achieved, overall monitoring comprehensiveness is improved, and the upper layer and the lower layer of litz coils are adopted, so that the resistance of the magnet is lower, the thermal effect is lower, and the efficiency of converting electric energy into magnetic energy is higher.
2. This time-varying gradient magnetic field generation system can control water-cooling module through control terminal, adjusts according to the real-time temperature variation of magnetic field generator, and the water supply of control ooff valve, water supply to the water-cooling layer if necessary realizes magnetic field generator's quick cooling, and through water-cooling return circuit quick cooling, and accomplish the hydrologic cycle and flow, last cooling, through control high-power current amplifier, provides the electric current for magnetic field generator to improve electromagnetic conversion efficiency, realize holistic steady operation.
Drawings
FIG. 1 is a system layout of the present utility model;
FIG. 2 is a block diagram of a magnetic field generator;
fig. 3 is an internal structural view of the magnetic field generator.
In the figure: 1. a magnetic field generator; 101. litz coils; 102. a magnet; 2. a bottom plate; 3. a top plate; 4. a thermocouple; 5. a switch valve; 6. a flow meter; 7. a water cooling module; 8. a water cooling loop; 9. a high power current amplifier; 10. a water cooling layer; 11. a magnet state monitoring module; 12. a control terminal; 13. and a signal source.
Detailed Description
Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.
In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 3, the present utility model provides a technical solution: the utility model provides a time-varying gradient magnetic field generating system, by the water-cooling district, magnetic field measurement and control district and terminal area are constituteed, the water-cooling district includes water-cooling module 7, water-cooling module 7 UNICOM magnetic field measurement and control district, the magnetic field measurement and control district comprises high-power current amplifier 9, magnetic field generator 1 and magnet state monitoring module 11, magnetic field generator 1 is connected to magnet state monitoring module 11, thereby the change of real-time supervision magnetic field generator 1, all be provided with water-cooling layer 10 around the magnetic field generator 1, thereby guarantee the temperature stability around the magnetic field generator 1, avoid local high temperature.
The high-power current amplifier 9 is connected to magnetic field generator 1 one end, can provide stable power for magnetic field generator 1 through high-power current amplifier 9, high-power current amplifier 9 one side is provided with water-cooling circuit 8, water-cooling circuit 8 and water-cooling layer 10 all communicate water-cooling module 7 through adjusting part, adjusting part includes ooff valve 5, ooff valve 5 one end UNICOM water-cooling module 7, ooff valve 5 one end is connected with flowmeter 6, flowmeter 6 UNICOM water-cooling layer 10 and water-cooling circuit 8, all set up solitary ooff valve 5 and flowmeter 6 on magnetic field generator 1 and the high-power current amplifier 9, the flow is monitored in real time, the prevention flow is not enough, the part generates heat.
Referring to fig. 2 and 3 of the specification, the magnetic field generator 1 includes a bottom plate 2, a magnet 102 is installed on the bottom plate 2, a double-layer litz coil 101 is arranged inside the magnet 102 and is used for generating a magnetic field with high uniformity, a top plate 3 is arranged at the outer top of the double-layer litz coil 101, a plurality of thermocouples 4 are arranged between the top plate 3 and the bottom plate 2, the thermocouples 4 are distributed circumferentially around the axis of the litz coil 101, an independent switch valve 5 and a flowmeter 6 are arranged on the top plate 3, the monitoring accuracy independence is improved, a terminal area is composed of a control terminal 12 and a signal source 13, a magnet state monitoring module 11 is electrically connected with the control terminal 12, the condition monitored by the magnet state monitoring module 11 can be known through the control terminal 12, the real-time working condition of the magnetic field generator 1 is clearly mastered, unexpected faults are avoided, when the magnetic field generator 1 needs to be cooled, the control terminal 12 sends signals to the water cooling module 7, the switch valve 5 is controlled to supply water, the temperature around the magnetic field generator 1 is cooled, the high-power current amplifier 9 is electrically connected with the signal source 13, the release of current is controlled by the control terminal 12, and the high-power current amplifier 9 is prevented from exceeding the ambient temperature of the magnetic field generator 1.
Specific use and action of the embodiment: the control terminal 12 is used for controlling the magnet state monitoring module 11 to monitor the magnetic field generator 1 in real time, when the thermocouple 4 on the magnetic field generator 1 detects that the ambient temperature is too high, a signal is sent, the control terminal 12 receives the signal, the signal is transmitted to the water cooling module 7, the water cooling module 7 can control the switch valve 5 to supply water, so that the water cooling layer 10 is enabled to supply water, water cooling is carried out, and timely cooling is carried out through the water cooling loop 8, water circulation is achieved, when the magnetic field of the magnetic field generator 1 is weakened, the signal source 13 receives the signal, the control terminal 12 starts the high-power current amplifier 9 to provide more current for the magnetic field generator 1, the electromagnetic conversion efficiency is improved, and the double-layer litz coil 101 is used, due to the fact that the coil is shorter, the resistance of the magnet 102 is lower, therefore the thermal effect is lower, the efficiency of converting electric energy into magnetic energy is higher.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. A time-varying gradient magnetic field generating system consists of a water cooling area, a magnetic field measurement and control area and a terminal area, and is characterized in that,
the water cooling area comprises a water cooling module;
the water cooling module is communicated with a magnetic field measurement and control area, and the magnetic field measurement and control area consists of a high-power current amplifier, a magnetic field generator and a magnet state monitoring module;
the magnetic body state monitoring module is connected with the magnetic field generator, water cooling layers are arranged around the magnetic field generator, one end of the magnetic field generator is connected with the high-power current amplifier, one side of the high-power current amplifier is provided with a water cooling loop, and the water cooling loop and the water cooling layers are communicated with the water cooling module through the adjusting component;
the terminal area comprises control terminal and signal source, and magnet state monitoring module and control terminal electric connection give the water-cooling module through control terminal sending signal, and the water-cooling module can control water-cooling return circuit and water-cooling layer and supply water, and high-power current amplifier electric connection signal source, release through control terminal control current.
2. A time-varying gradient magnetic field generating system as defined in claim 1, wherein,
the adjusting component comprises a switch valve, one end of the switch valve is communicated with the water cooling module, one end of the switch valve is connected with a flowmeter, and the flowmeter is communicated with the water cooling layer and the water cooling loop.
3. A time-varying gradient magnetic field generating system as defined in claim 1, wherein,
the magnetic field generator comprises a bottom plate, a magnet is mounted on the bottom plate, a double-layer litz coil is arranged inside the magnet and used for generating a high-uniformity magnetic field, and a top plate is arranged at the outer top of the double-layer litz coil.
4. A time-varying gradient magnetic field generating system as defined in claim 3, wherein,
and the top plate is provided with an independent switch valve and a flowmeter.
5. A time-varying gradient magnetic field generating system as defined in claim 3, wherein,
a plurality of thermocouples are arranged between the top plate and the bottom plate and are circumferentially distributed around the axis of the litz coil.
6. A time-varying gradient magnetic field generating system as defined in claim 1, wherein,
and the high-power current amplifier is provided with an independent switch valve and a flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223262181.4U CN219246491U (en) | 2022-12-06 | 2022-12-06 | Time-varying gradient magnetic field generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223262181.4U CN219246491U (en) | 2022-12-06 | 2022-12-06 | Time-varying gradient magnetic field generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219246491U true CN219246491U (en) | 2023-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223262181.4U Active CN219246491U (en) | 2022-12-06 | 2022-12-06 | Time-varying gradient magnetic field generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219246491U (en) |
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2022
- 2022-12-06 CN CN202223262181.4U patent/CN219246491U/en active Active
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