Cooling system for a tokamak device and control method

Abstract

The application relates to the field of cooling systems, in particular to a cooling system for a tokamak device and a control method, the cooling system comprising a cooling device, a first heat exchange module, a device to be heat exchanged and a water quality treatment module, the cooling device being suitable for cooling a cooling medium flowing through the cooling device, the first heat exchange module being provided with a first heat exchange flow channel and a second heat exchange flow channel which can selectively exchange heat with each other, the first heat exchange flow channel and the second heat exchange flow channel being suitable for flowing through the cooling medium, the first heat exchange flow channel being communicated with the cooling device, the device to be heat exchanged being suitable for being arranged in the tokamak device, the device to be heat exchanged being selectively communicated with the second heat exchange flow channel, the water quality treatment module being selectively communicated with the second heat exchange flow channel and forming a treatment loop with the second heat exchange flow channel, and the water quality treatment module being suitable for optimizing the water quality of the cooling medium flowing through the water quality treatment module, so that the overall operation stability of the cooling system can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cooling systems, and particularly to a cooling system for a tokamak device and a control method. BACKGROUND

[0002] In the related art, the cooling system used by the tokamak device faces challenges in terms of stability when coping with complex and dynamically changing thermal loads inside the device. In the long-term operation process of the existing cooling system, problems such as parameter fluctuation and heat exchange performance attenuation of the cooling system often occur, which makes it difficult to meet the stringent requirements of the tokamak device for stable operation. The above-mentioned insufficient stability directly affects the safety and operation efficiency of the entire tokamak device and becomes a technical bottleneck restricting the development of the tokamak device. Therefore, how to effectively improve the overall operation stability of the cooling system has become a technical problem to be solved by the present application. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a cooling system for a tokamak device, which can improve the overall operation stability of the cooling system.

[0004] The present application also provides a control method for the above-mentioned cooling system.

[0005] The cooling system for a tokamak device according to an embodiment of the present application comprises: a cooling device adapted to cool a coolant medium flowing through the cooling device; a first heat exchange module, the first heat exchange module is provided with a first heat exchange flow channel and a second heat exchange flow channel which can selectively exchange heat with each other, the first heat exchange flow channel and the second heat exchange flow channel are adapted to flow through the coolant medium, and the first heat exchange flow channel is in communication with the cooling device; a device to be heat exchanged, the device to be heat exchanged is adapted to be arranged in the tokamak device, and the device to be heat exchanged is in selective communication with the second heat exchange flow channel; a water quality treatment module, the water quality treatment module is in selective communication with the second heat exchange flow channel and forms a treatment loop with the second heat exchange flow channel, and the water quality treatment module is adapted to optimize the water quality of the coolant medium flowing through the water quality treatment module.

[0006] According to the cooling system for the tokamak device provided in the embodiments of the present application, the water quality treatment module and the second heat exchange flow channel form a treatment loop in selective communication. During the operation of the cooling system, the treatment loop can be used to optimize the water quality of the coolant medium participating in the heat exchange of the second heat exchange flow channel, effectively inhibiting the corrosion of the inner wall of the heat exchange flow channel or the influence of the resistivity of the coolant medium caused by the impurity deposition and ion concentration change in the coolant medium, avoiding the problems such as the attenuation of the heat exchange efficiency caused by the deterioration of the water quality with the increase of the operation time, ensuring that the second heat exchange flow channel can maintain stable heat exchange performance for a long time, and further ensuring that the heat exchange capacity of the entire cooling system can continuously meet the cooling requirements of the tokamak device, improving the stability of the overall operation of the cooling system, reducing the risk of device shutdown caused by the problems of the cooling system, and ensuring the safety and operation efficiency of the device.

[0007] According to the cooling system for the tokamak device provided in the embodiments of the present application, the water quality treatment module and the second heat exchange flow channel form a treatment loop in selective communication. During the operation of the cooling system, the treatment loop can be used to optimize the water quality of the coolant medium participating in the heat exchange of the second heat exchange flow channel, effectively inhibiting the corrosion of the inner wall of the heat exchange flow channel or the influence of the resistivity of the coolant medium caused by the impurity deposition and ion concentration change in the coolant medium, avoiding the problems such as the attenuation of the heat exchange efficiency caused by the deterioration of the water quality with the increase of the operation time, ensuring that the second heat exchange flow channel can maintain stable heat exchange performance for a long time, and further ensuring that the heat exchange capacity of the entire cooling system can continuously meet the cooling requirements of the tokamak device, improving the stability of the overall operation of the cooling system, reducing the risk of device shutdown caused by the problems of the cooling system, and ensuring the safety and operation efficiency of the device.

[0008] According to the cooling system for the tokamak device provided in the embodiments of the present application, the water quality treatment module and the second heat exchange flow channel form a treatment loop in selective communication. During the operation of the cooling system, the treatment loop can be used to optimize the water quality of the coolant medium participating in the heat exchange of the second heat exchange flow channel, effectively inhibiting the corrosion of the inner wall of the heat exchange flow channel or the influence of the resistivity of the coolant medium caused by the impurity deposition and ion concentration change in the coolant medium, avoiding the problems such as the attenuation of the heat exchange efficiency caused by the deterioration of the water quality with the increase of the operation time, ensuring that the second heat exchange flow channel can maintain stable heat exchange performance for a long time, and further ensuring that the heat exchange capacity of the entire cooling system can continuously meet the cooling requirements of the tokamak device, improving the stability of the overall operation of the cooling system, reducing the risk of device shutdown caused by the problems of the cooling system, and ensuring the safety and operation efficiency of the device.

[0009] According to the cooling system for the tokamak device provided in the embodiments of the present application, the water quality treatment module and the second heat exchange flow channel form a treatment loop in selective communication. During the operation of the cooling system, the treatment loop can be used to optimize the water quality of the coolant medium participating in the heat exchange of the second heat exchange flow channel, effectively inhibiting the corrosion of the inner wall of the heat exchange flow channel or the influence of the resistivity of the coolant medium caused by the impurity deposition and ion concentration change in the coolant medium, avoiding the problems such as the attenuation of the heat exchange efficiency caused by the deterioration of the water quality with the increase of the operation time, ensuring that the second heat exchange flow channel can maintain stable heat exchange performance for a long time, and further ensuring that the heat exchange capacity of the entire cooling system can continuously meet the cooling requirements of the tokamak device, improving the stability of the overall operation of the cooling system, reducing the risk of device shutdown caused by the problems of the cooling system, and ensuring the safety and operation efficiency of the device.

[0010] According to the cooling system for the tokamak device provided in the embodiments of the present application, the water quality treatment module and the second heat exchange flow channel form a treatment loop in selective communication. During the operation of the cooling system, the treatment loop can be used to optimize the water quality of the coolant medium participating in the heat exchange of the second heat exchange flow channel, effectively inhibiting the corrosion of the inner wall of the heat exchange flow channel or the influence of the resistivity of the coolant medium caused by the impurity deposition and ion concentration change in the coolant medium, avoiding the problems such as the attenuation of the heat exchange efficiency caused by the deterioration of the water quality with the increase of the operation time, ensuring that the second heat exchange flow channel can maintain stable heat exchange performance for a long time, and further ensuring that the heat exchange capacity of the entire cooling system can continuously meet the cooling requirements of the tokamak device, improving the stability of the overall operation of the cooling system, reducing the risk of device shutdown caused by the problems of the cooling system, and ensuring the safety and operation efficiency of the device.

[0011] According to some embodiments of the present application, the cooling system for the tokamak device further comprises: an ion concentration detection member arranged at the outlet of the second heat exchange flow channel and configured to detect the ion concentration of the coolant medium after heat exchange; and a first control valve arranged between the second heat exchange flow channel and the device to be heat exchanged, and configured to control the opening degree of the first control valve according to the ion concentration.

[0012] According to some embodiments of the present application, the cooling system for the tokamak device further comprises: a second control valve arranged between the outlet of the second heat exchange flow channel and the water quality treatment module; and wherein the second control valve is configured to control the opening degree of the second control valve according to the ion concentration.

[0013] According to some embodiments of the present application, the cooling system for the tokamak device further comprises: a pressure stabilizing unit in communication with the second heat exchange flow channel, the pressure stabilizing unit containing coolant medium and pressure stabilizing medium, and the pressure stabilizing unit being provided with a gas supplement port.

[0014] According to some embodiments of the present application, the cooling system for the tokamak device, the pressure stabilizing unit is provided with a pressure relief channel to optionally discharge the pressure stabilizing medium in the pressure stabilizing unit.

[0015] According to some embodiments of the present application, the cooling system for the tokamak device further comprises: a flow valve in communication with the first heat exchange flow channel and configured to detect the flow rate of the first heat exchange flow channel.

[0016] The control method according to some embodiments of the present application is described briefly below.

[0017] According to some embodiments of the present application, the control method for any of the above embodiments, the ion concentration of the coolant medium after heat exchange in the first heat exchange module is obtained, and the communication state of the second heat exchange flow channel, the device to be heat exchanged and the water quality treatment module is controlled according to the ion concentration.

[0018] According to the control method for any of the above embodiments, by acquiring the ion concentration of the refrigerant medium after heat exchange through the first heat exchange module, the water quality deterioration trend of the refrigerant medium can be acquired, and the ion concentration exceeding the standard is the cause of the enhanced corrosiveness of the refrigerant medium and the fouling of the flow channel, thereby providing a trigger basis for subsequent intervention and avoiding the hidden faults such as heat exchange flow channel blockage and heat exchange efficiency attenuation caused by the fact that the water quality deterioration is not discovered in time. Secondly, according to the ion concentration, the communication state of the second heat exchange flow channel, the heat exchange device to be heat exchanged, and the water quality treatment module is controlled, so that dynamic on-demand starting of water quality treatment is realized: when the ion concentration is within the normal range, the stable communication of the second heat exchange flow channel and the heat exchange device to be heat exchanged can be maintained to ensure the continuous output of the cooling function; when the ion concentration exceeds the threshold value, the communication state can be adjusted in time (such as cutting off the communication of the second heat exchange flow channel and the heat exchange device to be heat exchanged, and turning on the treatment circuit of the water quality treatment module and the second heat exchange flow channel), so that the over-standard refrigerant medium enters the water quality treatment module for optimization, and the deterioration of the refrigerant medium is prevented from continuing to participate in the cooling process of the heat exchange device to be heat exchanged, thereby avoiding the damage of the deteriorated refrigerant medium to the heat exchange efficiency, preventing the system parameter fluctuation caused by the intensification of the problems such as flow channel corrosion and fouling, maintaining the stability of the heat exchange performance of the entire cooling system, and meeting the stringent requirements of the tokamak device on the cooling system.

[0019] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the application will become apparent and be readily appreciated from the description of the embodiments, which follows, including the accompanying drawings.

[0021] Figure 1 is a structural schematic diagram of a cooling system for a tokamak device according to an embodiment of the application;

[0022] Figure 2 is a flowchart of a control method for a cooling system for a tokamak device according to an embodiment of the application.

[0023] REFERENCE NUMERALS:

[0024] 100, cooling system;

[0025] 1, cooling device;

[0026] 2, first heat exchange module;

[0027] 21, first heat exchange flow channel;

[0028] 211, first pump; 212, first vibration detection piece; 213, flow valve; 214, first standby pump; 215, first flow detection piece;

[0029] 22. second heat exchange channel;

[0030] 221. second pump; 222. second vibration detection member; 223. ion concentration detection member; 224. first control valve; 225. second backup pump; 226. second flow detection member; 227. pressure detection member;

[0031] 3. device to be cooled;

[0032] 4. water quality treatment module; 41. treatment circuit; 42. second control valve;

[0033] 43. mechanical filter; 44. vacuum degassing membrane device; 45. first-stage cation exchange column; 46. second-stage anion exchange column; 47. third-stage mixed bed exchange column; 48. fourth-stage polishing resin column; 49. fifth-stage ultra-pure refining column;

[0034] 5. second heat exchange module;

[0035] 51. third heat exchange channel; 511. fourth control valve;

[0036] 52. fourth heat exchange channel; 521. third control valve;

[0037] 6. heat exchanger;

[0038] 7. pressure setting unit;

[0039] 71. gas supplement port; 711. gas pipe;

[0040] 72. liquid supplement port; 721. refrigerant pipe;

[0041] 73. pressure relief passage; 74. pressure relief valve;

[0042] 8. control unit;

[0043] 9. terminal computer. DETAILED DESCRIPTION

[0044] Embodiments of the present application are described below in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are for the purpose of explanation only, and are not to be taken as limiting of the present application.

[0045] Reference is made below to Figure 1 A cooling system 100 for a tokamak device according to an embodiment of the present application is described.

[0046] The cooling system 100 for the tokamak device according to the embodiment of the present application comprises a cooling device 1, a first heat exchange module 2, a device to be heat exchanged 3, and a water quality treatment module 4. The cooling device 1 is adapted to cool the coolant medium flowing through the cooling device 1. The first heat exchange module 2 is provided with a first heat exchange flow channel 21 and a second heat exchange flow channel 22 which can selectively exchange heat with each other. The first heat exchange flow channel 21 and the second heat exchange flow channel 22 are adapted to circulate the coolant medium. The first heat exchange flow channel 21 is in communication with the cooling device 1. The device to be heat exchanged 3 is adapted to be arranged in the tokamak device. The device to be heat exchanged 3 is in selective communication with the second heat exchange flow channel 22. The water quality treatment module 4 is in selective communication with the second heat exchange flow channel 22 and forms a treatment loop 41 with the second heat exchange flow channel 22. The water quality treatment module 4 is adapted to optimize the water quality of the coolant medium flowing through the water quality treatment module 4.

[0047] In the related art, the cooling system 100 used in the tokamak device faces challenges in stability when coping with the complex and dynamic thermal load inside the device. In the long-term operation process of the existing cooling system 100, problems such as parameter fluctuation and heat exchange performance attenuation of the cooling system 100 often occur, which is difficult to meet the stringent requirements of the tokamak device for stable operation. The above insufficient stability directly affects the safety and operation efficiency of the entire tokamak device, and becomes a technical bottleneck restricting the development of the tokamak device.

[0048] The first heat exchange module 2 is provided with the first heat exchange flow channel 21 and the second heat exchange flow channel 22 which can selectively exchange heat. The first heat exchange flow channel 21 is in communication with the cooling device 1, so that the coolant medium cooled by the cooling device 1 can be obtained in the first heat exchange flow channel 21. The second heat exchange flow channel 22 can selectively exchange heat with the first heat exchange flow channel 21, and is in communication with the device to be heat exchanged 3. It can be understood that the coolant medium passing through the device to be heat exchanged 3 is high-temperature coolant medium which absorbs the temperature of the device to be heat exchanged 3. The high-temperature coolant medium in the second heat exchange flow channel 22 exchanges heat with the low-temperature coolant medium in the first heat exchange flow channel 21 in the first heat exchange module 2, so as to realize the cooling of the high-temperature coolant medium. When the coolant medium in the second heat exchange flow channel 22 passes through the device to be heat exchanged 3 again, it plays a role in cooling the device to be heat exchanged 3. The first heat exchange module 2 provides basic guarantee for the heat exchange link of the cooling system 100, and avoids the failure of the cooling system 100 caused by the fact that the heat load cannot be effectively transferred due to the lack of heat exchange function.

[0049] Meanwhile, the cooling system 100 of the tokamak device usually adopts a multi-loop parallel structure, and ion concentration difference exists between different loops. Ion migration phenomenon occurs in the heat exchange process, resulting in that the loop with low ion concentration is contaminated. The treatment loop 41 formed by the water quality treatment module 4 and the second heat exchange flow channel 22 is selectively communicated. In the long-term operation process of the system, the treatment loop 41 formed by the second heat exchange flow channel 22 can optimize the water quality of the coolant medium participating in the heat exchange of the second heat exchange flow channel 22, effectively inhibit the corrosion of the inner wall of the heat exchange flow channel or the increase of the flow resistance caused by the deposition of impurities in the coolant medium, the change of ion concentration and other problems, avoid the heat exchange efficiency from decaying with the running time due to the deterioration of water quality, ensure that the second heat exchange flow channel 22 maintains stable heat exchange performance for a long time, and then ensure that the heat exchange capacity of the entire cooling system 100 continuously meets the cooling demand of the tokamak device. When the heat exchange device 3 and the second heat exchange flow channel 22 are selectively communicated, the communication state of the heat exchange device 3 and the second heat exchange flow channel 22 can be controlled to achieve the cooling state adjustment of the heat exchange device 3 in the tokamak device, thereby reducing the risk of system operation interruption,

[0050] It can be understood that the water quality treatment module 4 can effectively reduce the ion concentration in the coolant medium by optimizing the water quality of the coolant medium in the second heat exchange flow channel 22. The low ion concentration state can directly improve the thermal conductivity of the coolant medium on the one hand, ensure that it maintains high heat transfer capacity in the heat exchange process, avoid the heat exchange performance from decaying due to the decrease of thermal conductivity, and then ensure the stability of the heat exchange efficiency between the second heat exchange flow channel 22 and the heat exchange device 3. On the other hand, the low ion concentration can maximize the risk of radioactive activation of the coolant medium in the neutron irradiation environment of the tokamak device, while reducing the content of impurity elements such as Cl, Na and Co, avoiding the conversion of these impurities into radioactive nuclides under neutron irradiation, thereby preventing the entire loop system from being contaminated by radioactivity, reducing the probability of system shutdown for maintenance due to radioactive contamination, and improving the continuity of system operation.

[0051] Meanwhile, the decrease of ion concentration can significantly slow down the corrosion rate of the cooling pipeline (such as stainless steel or copper alloy pipeline), reduce the generation of corrosion products such as rust, avoid the increase of flow resistance and the decrease of heat exchange efficiency caused by the adhesion of corrosion products to the inner wall of the flow channel, and prevent these corrosion products from being activated by neutrons to form radioactive dust, thereby reducing the safety risk and operation difficulty in the maintenance process. The coolant medium with low ion concentration has high resistivity and is close to an insulator. For the cooling system 100 passing through the superconducting magnet region of the tokamak, the high-voltage cooling pipeline and the ground can form a leakage loop, which can prevent the leakage from interfering with the stable operation of the superconducting magnet, thereby indirectly ensuring the operation stability of the components of the tokamak device, and further improving the operation reliability and stability of the cooling system 100 from the water quality level, thereby ensuring that it meets the steady-state operation demand of the device for a long time.

[0052] Briefly, the water quality treatment module 4 and the second heat exchange channel 22 form a selectable communication treatment circuit 41, during the operation of the cooling system 100, the refrigerant medium participating in the heat exchange of the second heat exchange channel 22 can be optimized through the treatment circuit 41, effectively inhibiting the corrosion of the impurities deposition, ion concentration change and other problems in the refrigerant medium to the inner wall of the heat exchange channel or affecting the resistivity of the refrigerant medium, avoiding the problems such as the attenuation of the heat exchange efficiency due to the deterioration of the water quality with the running time, ensuring that the second heat exchange channel 22 maintains stable heat exchange performance for a long time, and further ensuring that the heat exchange capacity of the entire cooling system 100 continuously meets the cooling demand of the tokamak device, improving the stability of the overall operation of the cooling system 100, reducing the risk of device downtime caused by the cooling system 100 problem, and ensuring the safety and operation efficiency of the device.

[0053] And in some embodiments of the present application, the water quality treatment module 4 is provided with a mechanical filter 43, a vacuum degassing membrane device 44, a first cation exchange tower 45, a second anion exchange tower 46, a third mixed bed exchange tower 47, a fourth polishing resin tower 48 and a fifth ultra-pure refining tower 49 in sequence.

[0054] Specifically, the mechanical filter 43 coarsely filters the refrigerant medium flowing through it, filtering out impurities such as solid particles, and the refrigerant medium filtered by the mechanical filter 43 passes through the vacuum degassing membrane device 44, which is mainly used to remove oxygen in the refrigerant medium. The specific oxygen removal mechanism is that a hydrophobic control fiber membrane is provided in the vacuum degassing membrane device 44, and the outside of the fiber membrane is vacuumed to ≤0.01 MPa, and the dissolved oxygen in the refrigerant medium escapes according to Henry's law:

[0055]

[0056] Where K H (Henry's constant) = 4.34 x 10 4 atm·L / mol (25℃), C is the ion concentration, and P is the equilibrium partial pressure of the gas. When the oxygen partial pressure is reduced to 0.001 atm, the dissolved oxygen concentration is ≤50 ppb. It should be noted that when expressing the concentration of the solution, 1 ppm is 1 ug / mL, ppm (part per million), 1 ppb is one thousandth of 1 ppm, and ppb (parts per billion) represents a concentration of one trillionth.

[0057] Dissolved oxygen is one of the main ion sources for pure water conduction. After deoxidation, the basic resistivity increases from 2 MΩ·cm to 8 MΩ·cm.

[0058] The refrigerant medium after oxygen removal by the vacuum degassing membrane device 44 passes through the first cation exchange tower 45, and the first cation exchange tower 45 is provided with H⁺ type strong acid cation resin, which is mainly used to remove Ca 2+ / Mg 2+ and other cations in the refrigerant medium by chemical reaction, and generate H2O, and after removing the cations, the contribution of the resistivity can be increased by about 1.5 MΩ·cm, and the corrosion rate of the flow pipeline made of stainless steel and the like can be reduced.

[0059] The refrigerant medium after removing the cations by the first cation exchange tower 45 passes through the second anion exchange tower 46, and the second anion exchange tower 46 is provided with OH⁻ type strong base anion resin, which is mainly used to remove Cl - / SO4 2- and other anions in the refrigerant medium by chemical reaction, and generate H2O, and after removing the anions, the contribution of the resistivity can be increased by about 2.2 MΩ·cm.

[0060] The refrigerant medium after removing the anions by the second anion exchange tower 46 passes through the third mixed bed exchange tower 47, and the third mixed bed exchange tower 47 is provided with mixed bed resin, which is mainly used for deep removal of residual ions, and after removing the residual ions, the contribution of the resistivity can be increased by about 3 MΩ·cm.

[0061] The refrigerant medium after removing the residual ions by the third mixed bed exchange tower 47 passes through the fourth polishing resin tower 48, and the fourth polishing resin tower 48 is provided with nuclear grade polishing resin, which is mainly used to reduce the ion concentration to ppt level, and after reducing the ion concentration, the contribution of the resistivity can be increased by about 2.8 MΩ·cm, wherein ppt (ppt part per trillion) represents a concentration of one trillionth.

[0062] The refrigerant medium after reducing the ion concentration to ppt level by the fourth polishing resin tower 48 passes through the fifth ultra-pure refining tower 49, and the fifth ultra-pure refining tower 49 is provided with ultra-low elution refining resin, which is mainly used to inhibit the elution of the resin itself, and after inhibiting the elution of the resin itself, the contribution of the resistivity can be increased by about 0.5 MΩ·cm.

[0063] It should be noted that the vacuum degassing membrane device 44 needs to be arranged upstream of the fifth filtration to prevent residual dissolved oxygen from oxidizing the resin. The dissolved oxygen can oxidize the quaternary ammonium group of the anion resin, resulting in a decrease in exchange capacity, and the service life of the resin is improved after deoxidation.

[0064] It can be understood that the refrigerant medium passes through the five-stage filtration of the water quality treatment module 4, and the ion concentration can be continuously reduced, so that problems such as the decrease in heat exchange efficiency due to the deterioration of water quality over time can be avoided.

[0065] According to some embodiments of the present application, the cooling system 100 for the tokamak device further comprises a first pump 211, a second pump 221, and a vibration detection member. The first pump 211 is in communication with the first heat exchange flow channel 21 and is used to drive the flow of the refrigerant medium. The second pump 221 is in communication with the second heat exchange flow channel 22 and is used to drive the flow of the refrigerant medium. The vibration detection member is arranged on the first pump 211 and / or the second pump 221. The vibration detection member is used to obtain the vibration parameter of the corresponding pump body and control the first pump 211 and / or the second pump 221 according to the vibration parameter.

[0066] The first pump 211 is in communication with the first heat exchange flow channel 21, and the second pump 221 is in communication with the second heat exchange flow channel 22. The first pump 211 and the second pump 221 can respectively provide a directional driving force for the refrigerant medium in the first heat exchange flow channel 21 and the second heat exchange flow channel 22, ensuring that the refrigerant medium in the first heat exchange flow channel 21 can stably flow through the cooling device 1, and the refrigerant medium in the second heat exchange flow channel 22 can stably flow through the first heat exchange module 2 or the device to be heat exchanged 3, avoiding the problem of unstable flow caused by insufficient or fluctuating flow power of the refrigerant medium, providing a basic flow guarantee for stable heat exchange of the first heat exchange flow channel 21 and the second heat exchange flow channel 22, and further maintaining the continuity of the heat exchange process of the cooling system 100. At the same time, the vibration detection member is arranged on the first pump 211 and / or the second pump 221, and the vibration parameter of the corresponding pump body can be obtained. The pump body vibration parameter is a key indicator reflecting the pump operation state. When the pump body abnormally vibrates due to component wear, abnormal load, or other reasons, the vibration detection member can capture the abnormal signal, and control the first pump 211 and / or the second pump 221 according to the vibration parameter, such as adjusting the operating power of the pump to reduce abnormal vibration, triggering a shutdown protection to avoid fault expansion, etc. The operation failure caused by continuous abnormal vibration of the pump body can be effectively prevented, the refrigerant medium flow is prevented from being interrupted or the flow being violently fluctuated due to the pump body failure, and the heat exchange performance of the cooling system 100 is prevented from being suddenly reduced and the parameters from being out of control due to the refrigerant medium supply problem.

[0067] At the same time, the first pump 211 and the second pump 221 respectively independently drive the refrigerant medium flow of the corresponding flow channel, cooperate with the vibration detection member, and make the operation states of the two flow channels independently controllable. When one of the pump bodies abnormally vibrates, the vibration detection member can only adjust the pump and the corresponding flow channel through control, without affecting the operation of the entire cooling system 100, further improving the stability and fault tolerance of the system operation, and ensuring that the cooling system 100 can continuously meet the cooling demand of the stable operation of the tokamak device.

[0068] According to some embodiments of the present application, the cooling system 100 for the tokamak device, the first pump 211 is configured as a plurality of pumps arranged in parallel with each other, and each first pump 211 is provided with a first vibration detection member 212. The second pump 221 is configured as a plurality of pumps arranged in parallel with each other, and each second pump 221 is provided with a second vibration detection member 222.

[0069] The first pumps 211 are configured in parallel to each other and each is provided with a first vibration detection member 212, and the second pumps 221 are configured in parallel to each other and each is provided with a second vibration detection member 222, thereby providing redundant power support for the flow of the refrigerant medium. When the first heat exchange flow channel 21 needs to stably drive the refrigerant medium, even if one of the parallel first pumps 211 fails to operate due to a fault, the remaining first pumps 211 can continue to work, maintaining the stable flow of the refrigerant medium in the first heat exchange flow channel 21, avoiding the power interruption of the refrigerant medium in the flow channel due to the failure of a single pump body. Similarly, the parallel arrangement of the second pumps 221 can also ensure the continuity of the driving of the refrigerant medium in the second heat exchange flow channel 22, eliminating the influence of a single pump body fault on the flow of the refrigerant medium, and laying a foundation for the continuous heat exchange of the two flow channels.

[0070] Each pump body is independently provided with a vibration detection member, which can realize the monitoring of the operating state of a single pump body. When one of the first pumps 211 or the second pumps 221 has vibration abnormalities, the corresponding vibration detection member can individually capture the abnormal parameters of the pump, and only control the fault pump, such as shutdown for maintenance or adjustment of operating parameters, without affecting the operation of other normal pumps in the same group, thereby avoiding the spread of faults and ensuring the stable output of the driving power of the refrigerant medium in the corresponding flow channel, preventing the refrigerant medium flow in the entire flow channel from fluctuating greatly due to a single pump abnormality. The number of parallel pump bodies put into operation can be adjusted to adapt to the refrigerant medium flow demand, and the vibration detection members are used to ensure that the pump bodies put into operation are in a stable state, further improving the controllability and stability of the refrigerant medium flow parameters, and finally improving the overall operation stability of the cooling system 100 from the aspects of power driving and fault prevention and control, thereby ensuring that it continuously meets the cooling needs of the tokamak device.

[0071] In some embodiments of the present application, the control unit 8 is further connected in communication with the first vibration detection member 212 and the second vibration detection member 222, and the control unit 8 is further connected in communication with the first pump 211 and the second pump 221, so as to control the working state of the first pump 211 and the second pump 221 according to the detection data of the first vibration detection member 212 and the second vibration detection member 222. One of the first pumps 211 is configured as a first standby pump 214, which is used to start when the other first pumps 211 are shut down, thereby ensuring the stable flow of the refrigerant medium in the first heat exchange flow channel 21. One of the second pumps 221 is configured as a second standby pump 225, which is used to start when the other second pumps 221 are shut down, thereby ensuring the stable flow of the refrigerant medium in the second heat exchange flow channel 22.

[0072] Specifically, the first vibration detection member 212 and the second vibration detection member 222 are respectively arranged at the bearings of the first pump 211 and the second pump 221 to detect the vibration at the bearings of the first pump 211 and the second pump 221. The vibration threshold values T1, T2 and T3 are set in the control unit 8, where the spectrum offset of T1 is 15%, the spectrum offset of T2 is 30%, the spectrum offset of T3 is 50%, the current vibration spectrum offset value is T, when the vibration spectrum offset value T of the first vibration detection member 212 and the second vibration detection member 222 is less than T1, the first pump 211 and the second pump 221 are in normal operation, when the vibration spectrum offset value T of any one of the first vibration detection member 212 and the second vibration detection member 222 is T1≤T<T2, the control unit 8 labels the first pump 211 or the second pump 221 with abnormal data and issues a warning prompt to maintain the abnormal pump body, when the vibration spectrum offset value T of any one of the first vibration detection member 212 and the second vibration detection member 222 is T2≤T<T3, the control unit 8 shuts down the first pump 211 or the second pump 221 with abnormal data and starts the first standby pump 214 or the second standby pump 225 corresponding to the heat exchange channel; when the vibration spectrum offset value T of any one of the first vibration detection member 212 and the second vibration detection member 222 is T≥T3, the safety interlock is triggered, and the entire cooling system 100, the tokamak device and the auxiliary system matched with the tokamak device are shut down to ensure the safety of operation.

[0073] More specifically, the first vibration detection member 212 and the second vibration detection member 222 include an acceleration sensor, a speed sensor and an acoustic emission sensor, wherein the acceleration sensor is arranged above the driving end bearing seat of the corresponding pump to monitor the axial vibration; the speed sensor is arranged on the side surface of the non-driving end bearing seat of the corresponding pump to monitor the radial vibration; the acoustic emission sensor is arranged on the bearing seat base to monitor the early crack, and the commonly used type of pump body bearing in the tokamak device is a single-row deep groove ball bearing, and the fault characteristic frequency formula of the single-row deep groove ball bearing is divided into four, inner ring fault, outer ring fault, rolling element fault and cage fault.

[0074] When the inner ring fails, the time-domain waveform of the vibration has amplitude modulation, the sideband spacing is equal to the cage frequency fc, and the vibration spectrum offset value is between T1 and T2. At this time, the control unit 8 labels the first pump 211 or the second pump 221 of the abnormal data, and issues a warning to maintain the abnormal pump body; when the outer ring fails, the time-domain waveform of the vibration has periodic impact, the sideband spacing is equal to the shaft rotation frequency fr, and the vibration spectrum offset value is between T2 and T3. At this time, the control unit 8 shuts down the first pump 211 or the second pump 221 of the abnormal data, and starts the first standby pump 214 or the second standby pump 225 corresponding to the heat exchange channel; when the rolling element fails, the main performance is the fragmentation of the rolling element, the time-domain waveform of the vibration has random high-frequency impact, the wideband energy rises, and the vibration spectrum offset value is greater than T3. At this time, the safety interlock is triggered, and the cooling system 100, the tokamak device and the auxiliary system matched with the tokamak device are shut down to ensure the safety of operation; when the cage fails, the vibration energy of the time-domain waveform of the vibration drops sharply and then rises, the characteristic frequency disappears, and the safety interlock is also triggered. The entire cooling system 100, the tokamak device and the auxiliary system matched with the tokamak device are shut down to ensure the safety of operation.

[0075] In some embodiments of the present application, a terminal computer 9 is further included, which is in communication connection with the control unit 8 to control the numerical value of the control unit 8 and collect the control data of the control unit 8.

[0076] The cooling system 100 for the tokamak device according to some embodiments of the present application further comprises a second heat exchange module 5, the second heat exchange module 5 is provided with a third heat exchange channel 51 and a fourth heat exchange channel 52 which can selectively exchange heat with each other, the third heat exchange channel 51 is in communication with the cooling device 1, and the fourth heat exchange channel 52 is in communication with the second heat exchange channel 22 and the device to be heat exchanged 3 respectively.

[0077] The second heat exchange module 5 is provided with a third heat exchange channel 51 and a fourth heat exchange channel 52 that can selectively exchange heat, the third heat exchange channel 51 is in communication with the cooling device 1, and the fourth heat exchange channel 52 is in communication with the second heat exchange channel 22 and the device to be cooled 3 respectively, forming a secondary heat exchange path for the refrigerant medium in the second heat exchange channel 22. The refrigerant medium in the second heat exchange channel 22 after heat exchange by the first heat exchange module 2 will first enter the fourth heat exchange channel 52 and exchange heat with the low-temperature refrigerant medium from the cooling device 1 flowing through the third heat exchange channel 51. When the temperature of the refrigerant medium in the second heat exchange channel 22 after heat exchange by the first heat exchange module 2 is still higher than the cooling temperature required by the device to be cooled 3, the low-temperature refrigerant medium in the third heat exchange channel 51 can further reduce the temperature of the refrigerant medium in the fourth heat exchange channel 52 through heat exchange, realizing secondary cooling of the refrigerant medium. Through secondary heat exchange, the temperature of the refrigerant medium entering the device to be cooled 3 can be further reduced, avoiding the situation that the device to be cooled 3 cannot effectively dissipate heat due to the excessively high temperature of the refrigerant medium, and further preventing the accumulation of local thermal load inside the tokamak device.

[0078] At the same time, stable refrigerant medium temperature can avoid thermal stress fluctuations in the cooling system 100 due to excessive temperature difference, reduce the risk of damage to the pipeline due to sudden temperature change, and ensure the structural stability of the flow channel system. In addition, the direct communication of the third heat exchange channel 51 with the cooling device 1 can provide a stable source of low-temperature refrigerant medium for the fourth heat exchange channel 52, ensuring the continuity of the secondary heat exchange process and the stability of the heat exchange effect, so that the refrigerant medium in the second heat exchange channel 22 always maintains a temperature level meeting the cooling requirements after two heat exchanges, thereby improving the operation stability of the cooling system 100 from the temperature control level and meeting the steady-state operation requirements of the tokamak device.

[0079] According to some embodiments of the present application, the cooling system 100 for the tokamak device, the first heat exchange module 2 and the second heat exchange module 5 are both configured as a plurality of heat exchangers 6, and the plurality of heat exchangers 6 of the first heat exchange module 2 are connected in parallel with each other, and the plurality of heat exchangers 6 of the second heat exchange module 5 are connected in parallel with each other.

[0080] The first heat exchange module 2 and the second heat exchange module 5 each adopt a structure of multiple heat exchangers 6 connected in parallel. For any heat exchange module, the total heat exchange demand is evenly distributed to each parallel heat exchanger 6, so that each heat exchanger 6 only needs to bear a part of the total heat exchange load of the corresponding unit, rather than bearing the entire load alone, thereby avoiding that each heat exchanger 6 is in a full-load operation state for a long time. When the heat exchanger 6 is in a full-load operation state, the flow rate of the refrigerant medium in the internal flow channel of the heat exchanger 6 and the like are at a high level, which is easy to cause local overheating problems, resulting in poor heat exchange effect. At the same time, the components are subjected to high thermal stress and mechanical stress for a long time, which can accelerate fatigue damage. After the load is dispersed, the operating parameters of each heat exchanger 6 can be controlled in the optimal heat exchange interval, which not only reduces the risk of flow channel damage and sudden drop in heat exchange efficiency caused by local overheating, but also reduces the probability of fatigue failure of components due to long-term high load, thereby effectively prolonging the service life of each heat exchanger 6. By dispersing the load to reduce the failure probability and prolong the service life of the equipment, the heat exchange unit can continuously and stably output the heat exchange capacity, thereby avoiding heat exchange interruption or a significant decrease in heat exchange efficiency caused by heat exchanger 6 failure, and thus providing protection for the overall operation stability of the cooling system 100.

[0081] The cooling system 100 for the tokamak device according to some embodiments of the present application further comprises: an ion concentration detection member 223 arranged at the outlet of the second heat exchange flow channel 22 and used for detecting the ion concentration of the refrigerant medium after heat exchange; and a first control valve 224 located between the second heat exchange flow channel 22 and the device to be heat exchanged 3, and the first control valve 224 controls the opening degree according to the ion concentration.

[0082] The ion concentration detection member 223 is arranged at the outlet of the second heat exchange flow channel 22, and can monitor the ion concentration of the refrigerant medium after heat exchange in real time. The detection data at this position can directly reflect the ion concentration of the second heat exchange flow channel 22 after heat exchange in the first heat exchange module 2 and the ion state of the refrigerant medium before entering the device to be heat exchanged 3, thereby providing a basis for subsequent control. When it is detected that the ion concentration of the refrigerant medium exceeds a preset threshold, it means that the ion concentration of the refrigerant medium is excessive. If the refrigerant medium directly flows into the device to be heat exchanged 3, it is easy to cause corrosion of the cooling pipeline, a decrease in the thermal conductivity coefficient, or an increase in the risk of radioactive activation. At this time, the first control valve 224 connected with the second heat exchange flow channel 22 and the device to be heat exchanged 3 adjusts the opening degree according to the ion concentration signal, for example, by reducing the opening degree to reduce the delivery amount of the refrigerant medium with excessive ion concentration to the device to be heat exchanged 3, or by closing the valve to block the delivery when the concentration is seriously excessive, so as to avoid the unqualified refrigerant medium from entering the device to be heat exchanged 3 and affecting the system operation. The ion-excessive refrigerant medium is intercepted to prevent corrosion damage to the cooling pipeline, to ensure that the refrigerant medium maintains a high thermal conductivity coefficient to stabilize the heat exchange efficiency, to reduce the risk of radioactive nuclides generated by ions under neutron irradiation, and to reduce system failure or shutdown maintenance caused by water quality problems.

[0083] In addition, the first control valve 224 adjusts the opening degree according to the ion concentration, so that the flow of the refrigerant medium entering the heat exchange device 3 is maintained within a reasonable range, the sudden change of the flow is avoided, the parameter fluctuation of the cooling system 100 is avoided, the stability of the heat exchange process is further ensured, and the overall operation stability of the cooling system 100 is improved from the aspects of the quality control and the flow regulation of the refrigerant medium.

[0084] The cooling system 100 for the tokamak device according to some embodiments of the present application further comprises a second control valve 42, which is arranged between the outlet of the second heat exchange flow channel 22 and the water quality treatment module 4; wherein the second control valve 42 controls the opening degree according to the ion concentration.

[0085] Further, the second control valve 42 is arranged between the outlet of the second heat exchange flow channel 22 and the water quality treatment module 4, and controls the opening degree according to the ion concentration of the refrigerant medium obtained by the ion concentration detection member 223, so as to form a targeted water quality optimization and regulation mechanism. When the ion concentration detection member 223 monitors that the ion concentration of the refrigerant medium at the outlet of the second heat exchange flow channel 22 exceeds the set threshold value, the second control valve 42 can increase the opening degree, so that more refrigerant medium exceeding the standard enters the water quality treatment module 4 for purification treatment, and the ion content in the refrigerant medium is reduced by strengthening the water quality optimization process. When the ion concentration is within the qualified range, the second control valve 42 can reduce the opening degree, so as to reduce the amount of refrigerant medium entering the water quality treatment module 4, and more refrigerant medium with qualified ion concentration enters the cooling device 1, so as to avoid energy loss or flow fluctuation caused by excessive treatment under the premise of ensuring that the water quality meets the standard.

[0086] The water quality treatment module 4 ensures that the refrigerant medium entering the subsequent circulation is always maintained in a low ion concentration state, which can effectively remove impurity elements such as Cl, Na and Co through the water quality treatment module 4, reduce the risk of forming radioactive nuclides under neutron irradiation, slow down the corrosion rate of the cooling pipeline, reduce the blockage of the heat exchange flow channel by corrosion products such as rust slag, and ensure the high thermal conductivity of the refrigerant medium to maintain stable heat exchange efficiency.

[0087] The cooling system 100 for the tokamak device according to some embodiments of the present application further comprises a constant pressure unit 7, which is in communication with the second heat exchange flow channel 22, the constant pressure unit 7 contains refrigerant medium and pressure stabilizing medium, and the constant pressure unit 7 is provided with a gas supplement port 71.

[0088] It can be understood that the constant pressure unit 7 is in communication with the second heat exchange flow channel 22 and contains the refrigerant medium and the pressure stabilizing medium inside, and the constant pressure unit can directly dynamically regulate the pressure of the refrigerant in the second heat exchange flow channel 22. When the tokamak device is running, the temperature of the refrigerant in the second heat exchange flow channel 22 fluctuates due to changes in heat load, such as the refrigerant medium expanding and the pressure rising when the temperature rises, or the refrigerant medium shrinking and the pressure falling when the temperature falls. The pressure stabilizing medium in the constant pressure unit 7 can offset the fluctuation of the refrigerant pressure by changing its own pressure, thereby stabilizing the refrigerant pressure in the second heat exchange flow channel 22 within a preset range, avoiding unstable flow caused by fluctuation of the refrigerant pressure, and ensuring that the refrigerant can continuously and stably flow through the device to be heat-exchanged 3 and the heat exchange module, thereby ensuring the continuity of the heat exchange process and the stability of the heat exchange efficiency.

[0089] At the same time, the air supplement port 71 provided on the constant pressure unit 7 can supplement the pressure stabilizing medium when the medium leaks or the pressure of the pressure stabilizing medium is insufficient due to long-term operation, thereby maintaining the pressure stabilizing capability of the constant pressure unit 7, avoiding failure of the pressure stabilizing function due to insufficient pressure stabilizing medium, and ensuring that the constant pressure unit 7 can stably regulate the pressure for a long time. In addition, the refrigerant medium in the constant pressure unit 7 is in communication with the refrigerant of the second heat exchange flow channel 22, so that the refrigerant in the flow channel can be supplemented when the refrigerant is lost, thereby preventing the heat exchange capacity from being reduced due to insufficient refrigerant, further ensuring the stable operation of the second heat exchange flow channel 22 from the aspects of pressure and medium quantity, and improving the overall operation stability of the cooling system 100.

[0090] In some embodiments of the present application, the liquid supplement port 72 provided on the constant pressure unit 7 is used to supplement the refrigerant medium to the constant pressure unit 7, wherein the air supplement port 71 is adapted to be selectively in communication with the gas pipeline 711, and the liquid supplement port 72 is adapted to be selectively in communication with the refrigerant pipeline 721.

[0091] According to the cooling system 100 for the tokamak device in some embodiments of the present application, the constant pressure unit 7 is provided with a pressure relief channel 73 to selectively discharge the pressure stabilizing medium in the constant pressure unit 7.

[0092] The pressure relief channel 73 provided on the constant pressure unit 7 can selectively discharge the internal pressure stabilizing medium. It can be understood that when the pressure of the second heat exchange flow channel 22 rises due to changes in the temperature of the refrigerant, and the compression amount of the pressure stabilizing medium in the constant pressure unit 7 has reached the upper limit and cannot continue to absorb the pressure increment, the pressure relief channel 73 can be selectively opened to reduce the internal pressure of the constant pressure unit 7 by discharging part of the pressure stabilizing medium, thereby synchronously relieving the pressure load of the second heat exchange flow channel 22, avoiding hidden dangers such as rupture of the cooling pipeline and leakage of the interface caused by the pressure continuously exceeding the limit value, and preventing damage to the first pump 211, the second pump 221, the heat exchange module, and the device to be heat-exchanged, thereby ensuring the structural integrity and operation safety of the components in the cooling system 100.

[0093] In some embodiments of the present application, a pressure relief valve 74 is arranged on the pressure relief channel 73 to control the pressure relief rate of the pressure relief channel 73.

[0094] The cooling system 100 for the tokamak device according to some embodiments of the present application further comprises a flow valve 213 in communication with the first heat exchange channel 21 and configured to detect the flow rate of the coolant medium flowing through the first heat exchange channel 21.

[0095] The flow valve 213 is in communication with the first heat exchange channel 21 and can detect the flow rate of the coolant medium flowing through the channel, so as to capture the dynamic changes of the flow rate of the coolant medium in the first heat exchange channel 21 in real time. The first heat exchange channel 21 is directly connected to the cooling device 1, and the flow rate of the coolant medium determines the efficiency of the cooling device 1 in delivering low-temperature coolant medium to the first heat exchange module 2 and the second heat exchange module 5, and also affects the heat exchange effect between the first heat exchange module 2 and the second heat exchange channel 22. When the flow valve 213 detects that the flow rate is lower than the preset value, it indicates that the cooling device 1 may be insufficient in supplying the coolant medium to the first heat exchange channel 21, and if not intervened in time, it will cause the heat exchange capacity of the first heat exchange module 2 to decay, and then the temperature of the coolant medium entering the second heat exchange channel 22 will be too high, affecting the cooling effect of the subsequent heat exchange device 3. When the flow rate is detected to be higher than the preset value, it may cause waste of energy of the cooling device 1, or cause pressure fluctuation in the channel due to excessive flow rate. Based on the real-time detection data of the flow valve 213, the relevant components, such as the first pump 211 driving the flow of the coolant medium in the first heat exchange channel 21, can be regulated and controlled in time to ensure that the flow rate of the coolant medium in the first heat exchange channel 21 is always stable in a reasonable range matching the cooling demand and the heat exchange efficiency.

[0096] At the same time, stable flow rate of the coolant medium can ensure the uniformity of the heat exchange process in the first heat exchange module 2, avoid large and small heat exchange temperature difference caused by flow fluctuation, and prevent the parameters such as the temperature of the coolant medium and the heat exchange efficiency of the cooling system 100 from oscillating. In addition, the detection function of the flow valve 213 can also provide a basis for system fault diagnosis. By continuously monitoring the trend of the flow rate, potential problems such as channel blockage and component wear can be predicted in advance, so that maintenance can be carried out in time to avoid system shutdown caused by expanding faults, and the overall operation stability of the cooling system 100 can be improved.

[0097] The control method according to some embodiments of the present application will be described briefly below.

[0098] As shown in FIG. 6, the control method according to some embodiments of the present application for any of the above embodiments comprises the following steps. Figure 2 As shown in FIG. 6, the control method according to some embodiments of the present application for any of the above embodiments comprises the following steps.

[0099] According to the control method of any of the above embodiments, by obtaining the ion concentration of the refrigerant medium after heat exchange through the first heat exchange module 2, the water quality deterioration trend of the refrigerant medium can be captured, and the ion concentration exceeding the standard is the cause of the increased corrosion of the refrigerant medium and the fouling of the flow channel, which provides a trigger basis for subsequent intervention and avoids the hidden faults such as blockage of the heat exchange flow channel and attenuation of the heat exchange efficiency caused by the water quality deterioration not being discovered in time. Secondly, according to the ion concentration, the communication state of the second heat exchange flow channel 22, the heat exchange device 3, and the water quality treatment module 4 is controlled, and dynamic on-demand start of water quality treatment is realized: when the ion concentration is within the normal range, the stable communication of the second heat exchange flow channel 22 and the heat exchange device 3 can be maintained to ensure continuous output of the cooling function; when the ion concentration exceeds the threshold, the communication state can be adjusted in time (such as cutting off the communication of the second heat exchange flow channel 22 and the heat exchange device 3, and turning on the treatment circuit 41 of the water quality treatment module 4 and the second heat exchange flow channel 22), so that the refrigerant medium exceeding the standard enters the water quality treatment module 4 for optimization, and the deteriorated refrigerant medium is prevented from continuing to participate in the cooling process of the heat exchange device 3, thereby avoiding the damage of the deteriorated refrigerant medium to the heat exchange efficiency, preventing the system parameter fluctuation caused by the intensified problems such as flow channel corrosion and fouling, maintaining the stability of the heat exchange performance of the entire cooling system 100, and meeting the stringent requirements of the tokamak device stable operation on the cooling system 100.

[0100] According to the control method of any of the above embodiments, the control method further includes vibration and secondary cooling control methods.

[0101] Specifically, the cooling system 100 further includes: a first flow detection member 215, a second flow detection member 226, a pressure detection member 227, a third control valve 521, a fourth control valve 511, and a temperature detection member. The first flow detection member 215 is in communication with the first heat exchange flow channel 21 and is used to detect the flow of the refrigerant medium in the first heat exchange flow channel 21. The second flow detection member 226 and the pressure detection member 227 are both in communication with the second heat exchange flow channel 22 and are used to detect the flow and pressure of the refrigerant medium in the second heat exchange flow channel 22. The third control valve 521 is arranged between the second heat exchange flow channel 22 and the fourth heat exchange flow channel 52 to selectively connect the second heat exchange flow channel 22 and the fourth heat exchange flow channel 52. The fourth control valve 511 is in communication with the cooling device 1 and the third heat exchange flow channel 51 to selectively connect the cooled refrigerant medium in the cooling device 1 to the third heat exchange flow channel 51. The temperature detection member is arranged on the heat exchange device 3 to detect the temperature of the refrigerant medium before entering the heat exchange device 3.

[0102] The control unit 8 is in communication connection with the first flow detection member 215, the second flow detection member 226, the pressure detection member 227, the first vibration detection member 212, the second vibration detection member 222, the first pump 211, the second pump 221, the first standby pump 214, the second standby pump 225, the first control valve 224, the second control valve 42, the third control valve 521, the fourth control valve 511 and the temperature detection member respectively.

[0103] Specifically, the control unit 8 monitors the cooling system 100, when the temperature of the temperature detection member is greater than 30℃, the second heat exchange module 5 is started, the third control valve 521 is turned on to connect the second heat exchange flow channel 22 and the fourth heat exchange flow channel 52, the fourth control valve 511 is turned on to connect the cooling device 1 and the third heat exchange flow channel 51, and the second control valve 42 is turned off to disconnect the second heat exchange flow channel 22 and the cooling device 1, so that the low-temperature refrigerant medium in the third heat exchange flow channel 51 can further reduce the temperature of the refrigerant medium in the fourth heat exchange flow channel 52 through heat exchange, realizing secondary cooling of the refrigerant medium, through secondary heat exchange, the temperature of the refrigerant medium entering the heat exchange device 3 can be further reduced, avoiding that the heat exchange device 3 cannot effectively dissipate heat due to the too high temperature of the refrigerant medium, thereby preventing the accumulation of local heat load inside the tokamak device, and at the same time, the flow of the first heat exchange flow channel 21 and the third heat exchange flow channel 51 is adjusted by the flow valve 213 to adjust the heat exchange efficiency of the first heat exchange module 2 and the second heat exchange module 5, when the second heat exchange module 5 is started, the temperature is continuously monitored, when the temperature is less than 32℃, the system is in steady state, if the temperature is greater than 32℃, the flow valve 213 is adjusted to increase the heat exchange efficiency of the first heat exchange module 2 and the second heat exchange module 5, until the temperature is less than 32℃.

[0104] When the temperature is less than 30℃, the current values of the first flow detection member 215, the second flow detection member 226 and the pressure detection member 227 are obtained, and the current heat load of the first heat exchange module is calculated, if the heat load is less than 90%, the system continues to run in steady state, if the heat load is greater than 90%, the frequency of the first pump 211 and the second pump 221 is adjusted, and the data of the first vibration detection member 212 and the second vibration detection member 222 is obtained, and according to the current vibration frequency spectrum offset value T, the working state of the first pump 211 and the second pump 221 is controlled.

[0105] For the first flow detection member 215, when the first flow detection member 215 detects that the flow decreases by more than a threshold value, the opening of the flow valve 213 is increased, and when the first flow detection member 215 detects that the flow increases by more than a threshold value, the flow valve 213 is reduced.

[0106] For the second flow detecting member 226 and the pressure detecting member 227, when the second flow detecting member 226 detects that the flow decreases beyond a threshold value, the control unit 8 controls the constant pressure unit 7 to supplement the refrigerant medium to the second heat exchange flow path 22, when the pressure detecting member 227 detects that the pressure decreases beyond a threshold value, the control unit 8 controls the constant pressure unit 7 to supplement the pressure medium to the second heat exchange flow path 22 to ensure that the pressure is within an appropriate range, and when the pressure detecting member 227 detects that the pressure increases beyond a threshold value, the control unit 8 controls the pressure relief valve 74 to open the pressure relief passage 73 to allow the pressure medium in the constant pressure device to be discharged to ensure that the pressure is within an appropriate range.

[0107] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0108] In the description of the present application, "first feature" and "second feature" can include one or more of the features.

[0109] In the description of the present application, "a plurality of" means two or more.

[0110] In the description of the present application, "above" or "below" the second feature of the first feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.

[0111] In the description of the present application, "above", "over" and "on" the second feature of the first feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher in level than the second feature.

[0112] In the description of the present application, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0113] While the embodiments of the application have been shown and described, it is to be understood that the embodiments can be varied, modified, substituted and changed by those skilled in the art without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A cooling system for a tokamak device, characterized in that, The application relates to a cooling device for a tokamak device, comprising: a cooling device (1) adapted to cool a coolant medium flowing through the cooling device (1); a first heat exchange module (2) provided with a first heat exchange flow channel (21) and a second heat exchange flow channel (22) capable of selective heat exchange with each other, the first heat exchange flow channel (21) and the second heat exchange flow channel (22) being adapted to flow through the coolant medium, the first heat exchange flow channel (21) being in communication with the cooling device (1); a device to be heat exchanged (3) adapted to be arranged in the tokamak device, the device to be heat exchanged (3) being capable of selective communication with the second heat exchange flow channel (22); a water quality treatment module (4) capable of selective communication with the second heat exchange flow channel (22) and forming a treatment loop (41) with the second heat exchange flow channel (22), the water quality treatment module (4) being adapted to optimize the water quality of the coolant medium flowing through the water quality treatment module (4); an ion concentration detection member (223) arranged at the outlet of the second heat exchange flow channel (22) and used for detecting the ion concentration of the coolant medium after heat exchange; a first control valve (224) located between the second heat exchange flow channel (22) and the device to be heat exchanged (3), the first control valve (224) being controlled according to the ion concentration; a second control valve (42) arranged between the outlet of the second heat exchange flow channel (22) and the water quality treatment module (4); wherein the second control valve (42) is controlled according to the ion concentration.

2. Cooling system for a tokamak device according to claim 1, characterized in that, Further comprising: a first pump (211) in communication with the first heat exchange flow channel (21) and used for driving the coolant medium to flow; a second pump (221) in communication with the second heat exchange flow channel (22) and used for driving the coolant medium to flow; a vibration detection member arranged on the first pump (211) and / or the second pump (221), the vibration detection member being used for acquiring a vibration parameter of the corresponding pump body and controlling the first pump (211) and / or the second pump (221) according to the vibration parameter.

3. Cooling system for a tokamak device according to claim 2, characterized in that, The first pump (211) is configured as a plurality of pumps arranged in parallel with each other, and a first vibration detection member (212) is arranged on each first pump (211); The second pump (221) is configured as a plurality of pumps arranged in parallel with each other, and a second vibration detection member (222) is arranged on each second pump (221).

4. The cooling system for a tokamak device according to claim 1, characterized in that, Further comprising: a second heat exchange module (5) provided with a third heat exchange flow channel (51) and a fourth heat exchange flow channel (52) capable of selective heat exchange with each other, the third heat exchange flow channel (51) being in communication with the cooling device (1), and the fourth heat exchange flow channel (52) being in communication with the second heat exchange flow channel (22) and the device to be heat exchanged (3) respectively.

5. Cooling system for a tokamak device according to claim 4, characterized in that, The first heat exchange module (2) and the second heat exchange module (5) are both configured as a plurality of heat exchangers (6), and the plurality of heat exchangers (6) of the first heat exchange module (2) are connected in parallel with each other, and the plurality of heat exchangers (6) of the second heat exchange module (5) are connected in parallel with each other.

6. The cooling system for a tokamak device according to claim 1, characterized in that, Further comprising: A constant pressure unit (7) in communication with the second heat exchange flow channel (22), the constant pressure unit (7) containing refrigerant medium and pressure stabilizing medium, and the constant pressure unit (7) being provided with a gas supplementing port (71).

7. Cooling system for a tokamak device according to claim 6, characterized in that, The constant pressure unit (7) is provided with a pressure relief channel (73) for optionally discharging the pressure stabilizing medium in the constant pressure unit (7).

8. The cooling system for a tokamak device according to claim 1, characterized in that, Further comprising: A flow valve (213) in communication with the first heat exchange flow channel (21) and used for detecting the flow through the first heat exchange flow channel (21).

9. A control method for a cooling system for a tokamak device according to any one of claims 1-8, characterized in that, The ion concentration of the refrigerant medium after being heat exchanged by the first heat exchange module (2) is acquired, and the communication states of the second heat exchange flow channel (22), the device to be heat exchanged (3) and the water quality treatment module (4) are controlled according to the ion concentration.

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