CN220303979U - Helium cooling circulation unit structure and helium circulation cooling device for flywheel vacuum chamber - Google Patents
Helium cooling circulation unit structure and helium circulation cooling device for flywheel vacuum chamber Download PDFInfo
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- CN220303979U CN220303979U CN202321725862.1U CN202321725862U CN220303979U CN 220303979 U CN220303979 U CN 220303979U CN 202321725862 U CN202321725862 U CN 202321725862U CN 220303979 U CN220303979 U CN 220303979U
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- helium
- vacuum chamber
- flywheel
- unit structure
- pump
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- 239000001307 helium Substances 0.000 title claims abstract description 129
- 229910052734 helium Inorganic materials 0.000 title claims abstract description 129
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 129
- 238000001816 cooling Methods 0.000 title claims abstract description 47
- 238000004146 energy storage Methods 0.000 claims abstract description 33
- 239000007789 gas Substances 0.000 claims description 18
- 230000002457 bidirectional effect Effects 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Motor Or Generator Cooling System (AREA)
Abstract
The utility model discloses a helium cooling circulation unit structure and a helium circulation cooling device for a flywheel vacuum chamber, wherein the helium cooling circulation unit structure comprises: helium bottle, relief valve and helium pump; the safety valve is arranged at the bottleneck of the helium bottle, the safety valve is connected with the input end of the helium pump, and the output end of the helium pump is connected to the vacuum chamber of the flywheel energy storage unit structure to be cooled.
Description
Technical Field
The utility model relates to the technical field of flywheel energy storage, in particular to a helium cooling circulation unit structure and a helium circulation cooling device for a flywheel vacuum chamber.
Background
The flywheel energy storage is widely focused on the advantages of safety, high efficiency, maintenance free, long service life and the like, and is used as an energy storage device for electromechanical energy conversion, breaks through the limitation of a chemical battery, realizes the energy storage by a physical method, realizes the mutual conversion and storage between the electric energy and the kinetic energy of a flywheel running at a high speed through an electric/power generation bidirectional motor, has the energy conversion efficiency of more than 90 percent, does not have the problems of deflagration and performance attenuation, and has wide application in the aspects of assisting power grid frequency modulation, stabilizing wind and light output power fluctuation.
However, in practical application, the flywheel is usually stopped or limited in power due to temperature problem. Firstly, for the safety of flywheel operation, the flywheel energy storage is installed by buried type, the installation environment is a prefabricated ground well, and the environment is relatively airtight with the outside air, so that the efficiency of exchanging heat with the outside is low. Secondly, in order to reduce friction between the flywheel and the air and enhance the energy conversion rate, flywheel rotors, bi-directional motors, communication control circuits, bearings, other sensor devices and the like are arranged in the vacuumizing shell, and a large amount of heat is emitted by the devices during working and running. If the heat is not exchanged, the detection precision of the sensor equipment in the flywheel is reduced, and the motor causes the temperature to be too high to burn out.
Disclosure of Invention
The utility model aims to provide a helium cooling circulation unit structure and a helium circulation cooling device for a flywheel vacuum chamber, so that heat dissipation is realized under the condition that the vacuumizing environment of a flywheel is not changed, and environmental pollution is avoided.
In order to achieve the above object, the present utility model provides the following solutions:
the present utility model provides a helium gas cooling circulation unit structure, comprising: helium bottle, relief valve and helium pump;
the safety valve is arranged at the bottleneck of the helium bottle, the safety valve is connected with the input end of the helium pump, and the output end of the helium pump is connected to the vacuum chamber of the flywheel energy storage unit structure to be cooled;
the helium bottle is used for containing liquid helium.
Optionally, a first electromagnetic flowmeter and an inlet electric valve are further sequentially arranged on a pipeline between the output end of the helium pump and the vacuum chamber.
Optionally, a pressure sensor is disposed in the helium bottle.
Optionally, the safety valve is a safety angle valve.
A helium gas circulation cooling device for a flywheel vacuum chamber, said cooling device comprising: the device comprises a flywheel energy storage unit structure, a vacuumizing unit structure and the helium cooling circulation unit structure;
the vacuumizing unit structure and the cooling circulation unit structure are respectively connected with an air outlet and an air inlet of the vacuum chamber of the flywheel energy storage unit structure.
Optionally, the flywheel energy storage unit structure includes: the energy storage converter, the vacuum chamber, the flywheel rotor and the bidirectional motor are arranged in the vacuum chamber;
one end of the flywheel rotor is connected with the bidirectional motor shaft, and the bidirectional motor is electrically connected with the energy storage converter.
Optionally, the other end of the flywheel rotor is arranged in the vacuum chamber through a radial magnetic bearing and an axial magnetic bearing, the radial magnetic bearing is used for supporting the flywheel rotor in the radial direction, and the axial magnetic bearing is used for supporting the flywheel rotor in the axial direction.
Optionally, a vacuum sensor, a pressure sensor and a temperature sensor are further arranged in the vacuum chamber.
Optionally, the vacuumizing unit structure comprises an electric gate valve, a vacuumizing pump and a second electromagnetic flowmeter;
the air outlet of the vacuum chamber is connected with the input end of the vacuumizing pump through the electric gate valve, and the output end of the vacuumizing pump is connected with the second electromagnetic flowmeter.
According to the specific embodiment provided by the utility model, the utility model discloses the following technical effects:
the embodiment of the utility model provides a helium cooling circulation unit structure and a helium circulating cooling device for a flywheel vacuum chamber, wherein the helium cooling circulation unit structure comprises: helium bottle, relief valve and helium pump; the safety valve is arranged at the bottleneck of the helium bottle, the safety valve is connected with the input end of the helium pump, and the output end of the helium pump is connected to the vacuum chamber of the flywheel energy storage unit structure to be cooled.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a helium cycle cooling device for a flywheel vacuum chamber according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a helium cycle cooling device for a flywheel vacuum chamber according to an embodiment of the present utility model;
reference numerals illustrate:
1. a helium cylinder; 2. a pressure sensor; 3. a safety valve; 4. a helium pump; 5. a first electromagnetic flowmeter; 6. an inlet motor valve; 7. radial magnetic bearing axial magnetic bearing; 8. the method comprises the steps of carrying out a first treatment on the surface of the 9. A vacuum chamber; 10. a vacuum sensor; 11. a flywheel rotor; 12. a pressure sensor; 13. a bi-directional motor; 14. flywheel metal housing; 15. a temperature sensor; 16. an energy storage converter; 17. a power grid; 18. an outlet electric gate valve; 19. a vacuum pump; 20. a second electromagnetic flowmeter.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model aims to provide a helium cooling circulation unit structure and a helium circulation cooling device for a flywheel vacuum chamber, so that heat dissipation is realized under the condition that the vacuumizing environment of a flywheel is not changed, and environmental pollution is avoided.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
Example 1
As shown in fig. 1, an embodiment of the present utility model provides a helium gas cooling circulation unit structure, comprising: a helium bottle 1, a relief valve 3 and a helium pump 4; the safety valve 3 is arranged at the bottle mouth of the helium bottle 1, the safety valve 3 is connected with the input end of the helium pump 4, and the output end of the helium pump 4 is connected to the vacuum chamber 9 of the flywheel energy storage unit structure to be cooled. The helium bottle contains liquid helium.
As a preferred embodiment, a first electromagnetic flowmeter 5 and an inlet electric valve 9 are further arranged on a pipeline between the output end of the helium pump 4 and the vacuum chamber 9 in sequence. A pressure sensor 2 is arranged in the helium bottle 1.
In the embodiment of the utility model, the helium bottle 1 is provided with a safety valve 3 for preventing helium in the helium bottle 1 from leaking, and is used as a safety outlet valve to be connected with a helium pump 4, and the helium pump 4 is used for providing power to enable the helium to enter a vacuum chamber 9. The helium pump 4 is connected with the first electromagnetic flowmeter 5, detects the flow of helium, and the detected signal can be output to SIMATICS7-1200 for feeding back the flow entering the vacuum chamber; the first electromagnetic flowmeter 5 is connected with the inlet electric valve 6 and is used for avoiding outward leakage of helium in the vacuum chamber and is connected with the air inlet on the vacuum chamber.
The relief valve 3 is illustratively a relief angle valve, the helium bottle 1 is a helium cylinder, and the helium pump 4 is a helium high-pressure pump. The helium steel cylinder stores high-pressure liquid helium, and the pressure sensor 2 in the helium steel cylinder can be connected with SIMATICS7-1200 to detect the pressure in the helium steel cylinder, detect the leakage of helium in the helium steel cylinder and change reminding.
Example 2
Embodiment 2 of the present utility model provides a helium gas circulation cooling device for a flywheel vacuum chamber, the cooling device comprising: a flywheel energy storage unit structure, a vacuum pumping unit structure, and a helium gas cooling circulation unit structure in example 1; the vacuumizing unit structure and the cooling circulation unit structure are respectively connected with an air outlet and an air inlet of a vacuum chamber of the flywheel energy storage unit structure. In the embodiment of the utility model, the flywheel energy storage unit structure, the vacuumizing unit structure and the helium gas cooling circulation unit structure are mutually independent units, and the control function of each unit is realized by controlling the instrument valve and the pump of each unit system to be connected with the parts of other units, so that the whole circulation process of helium gas is ensured.
As shown in fig. 1, the flywheel energy storage structural unit comprises a radial magnetic bearing 7, an axial magnetic bearing 8, a vacuum chamber 9, a vacuum sensor 10, a flywheel rotor 11, a pressure sensor 12, a bidirectional motor 13, a flywheel metal shell 14, a temperature sensor 15 and an energy storage converter 16, wherein the energy storage converter 16 is connected to a power grid 17. The radial magnetic bearing 7 is used for supporting balance action, namely radial supporting, of the flywheel rotor 11 on the left and right directions of the XY axis, the axial magnetic bearing 8 is used for supporting balance, namely axial supporting, of the flywheel rotor 11 on the upper and lower directions of the Z axis, and the vacuum chamber 9 is a vacuum part wrapped inside the flywheel metal shell 14 and provides a vacuum environment for the movement of the flywheel rotor 11, so that friction loss is reduced. One end of the bidirectional motor 13 is connected with the flywheel rotor 11, provides electric energy for the flywheel rotor 11 during charging, serves as a motor to provide electric energy outwards during discharging, and is connected with the energy storage converter 16 at the other end for controlling the charging and discharging process of the flywheel rotor 11 and the power exchange process during grid connection; the flywheel rotor 11 serves as mechanical energy for storing rotational inertia; the pressure sensor 12 is used for measuring the pressure of the vacuum chamber and can be connected to the SIMATICS7-1200 through RS 485; the temperature sensor 15 is used for detecting the operation temperature of the flywheel rotor 11 and can be connected to SIMATICS7-1200 through RS 485; the vacuum sensor 10 for detecting the vacuum degree of the vacuum chamber may be connected to the SIMATICS7-1200 through RS 485.
The vacuumizing unit structure comprises an outlet electric gate valve 18, a vacuumizing pump 19 and a second electromagnetic flowmeter 20. The helium outlet electric valve 18 is connected with an air outlet below the vacuum chamber 9 to prevent leakage of vacuum degree, and is connected with the vacuumizing pump 19, the vacuumizing pump 19 provides vacuumizing power, the rotating speed of the vacuumizing power can be controlled by SIMATIC S7-1200, and then is connected with the second electromagnetic flowmeter 20 for feeding back the flow of flow monitoring, and the vacuumizing power can be connected with SIMATICS7-1200 through RS485 for displaying functions.
The helium refrigeration process for the flywheel vacuum chamber helium circulation cooling device in the embodiment of the utility model comprises the following steps:
helium gas flows out of the safety valve 3 from the helium bottle 1, is pressurized by the helium pump 4, flows through the first electromagnetic flowmeter to measure and calculate the flow rate of the helium gas, and enters the vacuum chamber 9 through the inlet electric valve 6 of the vacuum chamber 9 for heat exchange. The pressure sensor 12 measures pressure, the vacuum sensor 10 measures vacuum degree, the helium after heat exchange is pumped out by the vacuumizing pump 19 and enters the atmosphere through the outlet electric gate valve 18, the vacuumizing pump 19 and the second electromagnetic flowmeter 20, wherein the second electromagnetic flowmeter 20 is used for measuring and calculating the flow rate of the pumped heat exchange gas.
As a specific application of the helium cycle cooling device for a flywheel vacuum chamber according to the embodiment of the present utility model, as shown in fig. 2, the following system may be provided:
1. temperature control system in vacuum chamber
A plurality of temperature sensors 15 are installed in the vacuum chamber 9 in the flywheel metal shell 14 to detect the ambient temperature in the vacuum chamber 9, and data acquired by the sensors are transmitted to a data interface line on the SIMATICS7-1200 through an RS485 communication data line.
In the temperature control, the logic of the temperature control and the corresponding execution structure, the helium pump 4 does not operate at the safe set temperature of the flywheel. Under the condition that the safety temperature is exceeded, the rotating speed of the helium pump 4 is controlled, the flow of helium entering the vacuum chamber 9 is controlled, the flow detection of the first electromagnetic flowmeter 5 can be used as feedback of the flow of the helium entering the vacuum chamber 9, the heat exchange ratio is controlled, the normal temperature range of the flywheel energy storage structural unit is ensured, and the flywheel rotor 11 rotates in the process of circulating heat exchange of auxiliary helium in the vacuum chamber 9, so that an internal power circulation device is not required to be added for the heat exchange component.
After heat exchange with the vacuum chamber 9, the air in the whole device and the helium after heat exchange are pumped out by the vacuumizing pump 19 under the whole device, so that the vacuum degree and the safety pressure of the vacuum chamber 9 are ensured.
Finally, after helium cooling and heat exchange, the flywheel energy storage structural unit realizes temperature control in the vacuum chamber 9, so that a reasonable normal working range of flywheel components is achieved, and normal operation of the flywheel energy storage structural unit is ensured.
2. Helium gas circulation cooling system
Helium is stored in the hydrogen steel cylinder with the safety angle valve of the connecting pipe, so that the storage effect of liquid helium is realized, wherein the inside is provided with the pressure sensor 2 for detecting the pressure of the helium steel cylinder and reminding operation and maintenance personnel to detach the gas cylinder to replace nitrogen.
The air inlet into which helium enters is arranged at the upper part of the vacuum chamber 9, the flow of helium in the vacuum chamber 9 is quickened by utilizing the gravity effect of cold air, and the air outlet of helium output after heat exchange is arranged at the lower part of the vacuum chamber.
The helium circulation system is used for providing pressure through the helium pump 4 so that helium enters the vacuum chamber 9 and provides power for helium circulation cooling heat exchange, the helium is connected with the first electromagnetic flowmeter 5 through a pipeline, the first electromagnetic flowmeter 5 feeds back the rotating speed of the helium pump 4 through the change of measuring flow, and the air inflow of the helium is adjusted. The first electromagnetic flowmeter 5 is connected with the inlet electric valve 6, the inlet electric valve 6 has a manual/automatic switching function, and is connected with the vacuum chamber 9 through a pipeline to protect the vacuum degree of the vacuum chamber 9 and prevent the leakage of safety accident helium.
The air inlet and the air outlet of the vacuum chamber are respectively and additionally connected with a temperature sensor for measuring the temperature of helium entering and exiting the flywheel energy storage structure unit, and the temperature sensors in the vacuum chamber detect that the helium reaches a temperature controller (which can be arranged in SIMATICS 7-1200) through an RS485 communication data line to output an average value, so that the temperature coordination of the whole temperature control system is ensured.
After heat exchange is completed, the pressure of the vacuum chamber is necessarily enhanced, and the process of decompression is needed, and an outlet electric gate valve formed by connecting the guide pipes is connected to the outlet of the vacuum chamber, so that the outside air is ensured not to enter the vacuum chamber due to pressure difference. The outlet electric gate valve is connected with a vacuumizing pump through a conduit and provides power to maintain the indoor vacuum degree. And a conduit at the rear of the vacuumizing pump is connected with a second electromagnetic flowmeter to detect the flow of the vacuumizing gas.
The pressure sensor and the vacuum sensor in the vacuum chamber are respectively connected with the pressure controller and the vacuumizing controller (which can be arranged in SIMATICS 7-1200) through RS485 communication data lines, and the stability of the indoor pressure and the vacuum degree is maintained by controlling the rotating speed of the vacuumizing pump of the actuator when the vacuum degree and the pressure deviation occur.
Based on the embodiment, the technical scheme of the utility model has the beneficial effects that:
according to the utility model, helium is used for cooling, and heat exchange is performed on the vacuum chamber of the flywheel energy storage unit structure, so that the environment of the flywheel for vacuumizing is not changed, and the environment is not polluted by putting the flywheel into the atmosphere after heat exchange.
The utility model can monitor the temperature of the flywheel vacuum chamber in real time, and cool the flywheel in a low-temperature gas heat exchange mode, wherein the pressure and the vacuum degree in the flywheel vacuum chamber are controlled by the pressure sensor and the vacuum sensor, the normal operation of a flywheel motor and other components is ensured, and the conditions of power reduction and shutdown of the flywheel due to temperature are reduced.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present utility model and the core ideas thereof; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.
Claims (9)
1. A helium gas cooling circulation unit structure, characterized in that the helium gas cooling circulation unit structure comprises: helium bottle, relief valve and helium pump;
the safety valve is arranged at the bottleneck of the helium bottle, the safety valve is connected with the input end of the helium pump, and the output end of the helium pump is connected to the vacuum chamber of the flywheel energy storage unit structure to be cooled;
the helium bottle is used for containing liquid helium.
2. The helium cooling circulation unit structure of claim 1, wherein a first electromagnetic flowmeter and an inlet motor-driven valve are further provided in sequence on a pipeline between the output end of the helium pump and the vacuum chamber.
3. The helium cooling circulation unit structure of claim 1, wherein a pressure sensor is provided in the helium bottle.
4. The helium gas cooling circulation unit structure of claim 1, wherein said relief valve is a relief angle valve.
5. A helium circulating cooling apparatus for a flywheel vacuum chamber, said apparatus comprising: a flywheel energy storage unit structure, a vacuum pumping unit structure and a helium gas cooling circulation unit structure according to any one of claims 1-4;
the vacuumizing unit structure and the cooling circulation unit structure are respectively connected with an air outlet and an air inlet of the vacuum chamber of the flywheel energy storage unit structure.
6. The helium circuit cooling device for a flywheel vacuum chamber of claim 5, wherein the flywheel energy storage unit structure comprises: the energy storage converter, the vacuum chamber, the flywheel rotor and the bidirectional motor are arranged in the vacuum chamber;
one end of the flywheel rotor is connected with the bidirectional motor shaft, and the bidirectional motor is electrically connected with the energy storage converter.
7. The helium circulating cooling apparatus for a flywheel vacuum chamber of claim 6, wherein the other end of the flywheel rotor is disposed in the vacuum chamber by a radial magnetic bearing for radial direction support of the flywheel rotor and an axial magnetic bearing for axial direction support of the flywheel rotor.
8. The helium circuit cooling device for a flywheel vacuum chamber of claim 6, wherein a vacuum sensor, a pressure sensor and a temperature sensor are further provided in the vacuum chamber.
9. The helium cycle cooling device for a flywheel vacuum chamber of claim 5 wherein the evacuation unit structure comprises an electrically powered gate valve, an evacuation pump and a second electromagnetic flowmeter;
the air outlet of the vacuum chamber is connected with the input end of the vacuumizing pump through the electric gate valve, and the output end of the vacuumizing pump is connected with the second electromagnetic flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321725862.1U CN220303979U (en) | 2023-07-04 | 2023-07-04 | Helium cooling circulation unit structure and helium circulation cooling device for flywheel vacuum chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321725862.1U CN220303979U (en) | 2023-07-04 | 2023-07-04 | Helium cooling circulation unit structure and helium circulation cooling device for flywheel vacuum chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220303979U true CN220303979U (en) | 2024-01-05 |
Family
ID=89346009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321725862.1U Active CN220303979U (en) | 2023-07-04 | 2023-07-04 | Helium cooling circulation unit structure and helium circulation cooling device for flywheel vacuum chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220303979U (en) |
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2023
- 2023-07-04 CN CN202321725862.1U patent/CN220303979U/en active Active
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