CN110848563A - Operation control system of superconducting energy pipeline - Google Patents
Operation control system of superconducting energy pipeline Download PDFInfo
- Publication number
- CN110848563A CN110848563A CN201911125316.2A CN201911125316A CN110848563A CN 110848563 A CN110848563 A CN 110848563A CN 201911125316 A CN201911125316 A CN 201911125316A CN 110848563 A CN110848563 A CN 110848563A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- liquid storage
- storage tank
- superconducting energy
- lng
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
- F17C5/04—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases requiring the use of refrigeration, e.g. filling with helium or hydrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D16/00—Devices using a combination of a cooling mode associated with refrigerating machinery with a cooling mode not associated with refrigerating machinery
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0135—Pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0337—Heat exchange with the fluid by cooling
- F17C2227/0341—Heat exchange with the fluid by cooling using another fluid
- F17C2227/0353—Heat exchange with the fluid by cooling using another fluid using cryocooler
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
The invention provides an operation control system of a superconducting energy pipeline, which comprises: the system comprises a superconducting energy pipeline, liquid storage tanks connected with two ends of the superconducting energy pipeline, an LNG immersed pump connected with a pipeline at one end of one liquid storage tank, a refrigeration unit connected with the LNG immersed pump pipeline, a heat exchanger connected with the refrigeration unit pipeline, and the heat exchanger is connected with the other liquid storage tank through a pipeline; and finally, the LNG transported reversely enters the liquid storage tank, enters the heat exchanger to exchange heat with liquid nitrogen, further cools and enters the liquid storage tank, and the LNG transportation volume is adjusted on the premise of normal power transmission.
Description
Technical Field
The invention relates to the technical field of superconducting cables, in particular to an operation control system of a superconducting energy pipeline.
Background
The geographical distribution of energy resources and load resources in China is extremely unbalanced, most of power resources are distributed in the west and north, and most of population and load resources are distributed in the middle and east. In consideration of the future development of renewable energy, the contradiction of unbalanced distribution of energy resources and load resources in the future of China is more prominent. Meanwhile, about 5 billion kilowatts of electricity are required to be transmitted from the western region to the middle-east region in China, and annual transmission of electric energy reaches 2.3 to 2.5 trillions. Therefore, with the increasing proportion of renewable energy resources in energy resources, not only the basic patterns of 'west electric east transmission' and 'north electric south transmission' in China are not changed, but also the contradiction between the imbalance distribution of power resources and load resources is further deepened, and the development of a large-capacity remote power transmission technology is still necessary.
With the continuous starting of projects such as west-gas-east transportation and west-electricity-east transportation, gas and electricity are simultaneously transported to enter the field of view of superconducting research, and the natural gas liquefaction equipment is utilized to simultaneously meet the requirements of superconducting power transmission, reduce the cost of the superconducting power transmission and improve the stability and the safety of natural gas transportation.
If liquefied natural gas (the liquefaction temperature is 110K) or liquid hydrogen (the liquefaction temperature is 27K) is adopted as a cooling medium in a cooling system required by the superconducting direct current transmission cable, the integration of power transmission and gas transmission can be realized. This is because, on one hand, the critical temperature of the existing high-temperature superconducting materials such as TlBaCuO (Tc-125K) and HgBaCuO (Tc-150K) exceeds the liquefied natural gas temperature, and only from the perspective of the critical temperature, the possibility of developing a power transmission and gas transmission integrated superconducting energy pipeline is provided; on the other hand, the renewable energy has the characteristic of volatility, and natural gas or hydrogen is prepared by utilizing the renewable energy, so that the non-schedulable fluctuating energy can be converted into schedulable energy, and the superconductivity transmission cable cooling device can be used for cooling the superconductivity transmission cable.
However, during the transportation process of the superconducting energy pipeline, the transportation volume of the pipeline needs to change according to the change of the actual demand volume, when the demand volume is reduced, the transportation volume is reduced, due to the reduction of the transportation volume, the temperature rise during the transportation process is increased, and when the temperature is increased to be higher than the superconducting critical temperature (90K), the cable is not superconducting any more.
Disclosure of Invention
Therefore, there is a need to provide an operation control system for a superconducting energy pipeline, which can solve the problem of cooperative control of LNG flow and superconducting cable temperature during transportation, aiming at the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an operation control system of a superconducting energy pipeline, which comprises: the system comprises a superconducting energy pipeline, a first liquid storage tank, a second liquid storage tank, an LNG immersed pump, a refrigeration unit and a heat exchanger, wherein the first liquid storage tank and the second liquid storage tank are connected with two ends of the superconducting energy pipeline, the LNG immersed pump is connected with one end of the second liquid storage tank through a pipeline, the refrigeration unit is connected with the LNG immersed pump through a pipeline, the heat exchanger is connected with the other first liquid storage tank through a pipeline, when the demand of LNG is reduced, the excess LNG is reversely conveyed to the LNG immersed pump through the second liquid storage tank, is cooled through the refrigeration unit, enters the heat exchanger for heat exchange, and then enters the first liquid storage tank.
In some preferred embodiments, a plurality of the superconducting energy pipelines are included between the liquid storage tanks, an even number of the superconducting energy pipelines are set into a group in pairs, and the superconducting energy pipelines in the same group are connected by a first electromagnetic valve.
In some preferred embodiments, the refrigeration unit is a mixed refrigerant refrigerator.
In some preferred embodiments, the heat exchanger uses liquid nitrogen as a cooling medium.
The invention adopts the technical scheme that the method has the advantages that:
the invention provides an operation control system of a superconducting energy pipeline, which comprises: the system comprises a superconducting energy pipeline, liquid storage tanks connected with two ends of the superconducting energy pipeline, an LNG immersed pump connected with a pipeline at one end of one liquid storage tank, a refrigeration unit connected with the LNG immersed pump pipeline, a heat exchanger connected with the refrigeration unit pipeline, and the heat exchanger is connected with the other liquid storage tank through a pipeline; and finally, the LNG transported reversely enters the liquid storage tank, enters the heat exchanger to exchange heat with liquid nitrogen, further cools and enters the liquid storage tank, and the LNG transportation volume is adjusted on the premise of normal power transmission.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an operation control system of a superconducting energy pipeline according to an embodiment of the present invention.
Fig. 2 is a schematic view of a self-circulation system of an operation control system of a superconducting energy pipeline according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1, the present invention provides an operation control system for a superconducting energy pipeline, including: the system comprises a superconducting energy pipeline 110, a first liquid storage tank 120 and a second liquid storage tank 130 which are connected with two ends of the superconducting energy pipeline 110, an LNG immersed pump 140 which is connected with one end of the second liquid storage tank through a pipeline, a refrigeration unit 150 which is connected with the LNG immersed pump 140 through a pipeline, a heat exchanger 160 which is connected with the refrigeration unit 150 through a pipeline, and the heat exchanger 160 is connected with the other first liquid storage tank 120 through a pipeline.
The operation control system of the superconducting energy pipeline works in the following mode:
when the demand of LNG is reduced, the excess LNG is reversely transferred from the second storage tank 130 to the LNG immersed pump 140, cooled by the refrigeration unit 150, and then enters the heat exchanger 160 for heat exchange, and then enters the first storage tank 120.
Referring to fig. 2, a schematic diagram of a self-circulation system of an operation control system of a superconducting energy pipeline according to an embodiment of the present invention is shown.
The plurality of superconducting energy pipelines 110 are arranged between the first liquid storage tank 120 and the second liquid storage tank 130, even number of superconducting energy pipelines 110 are arranged into a group in pairs, and the superconducting energy pipelines 110 in the same group are connected by a first electromagnetic valve 1, a second electromagnetic valve 2 is further arranged on the superconducting energy pipeline 120, the first electromagnetic valve 1 and the second electromagnetic valve 2 are further connected with a control system 160, and the control system 160 can control the opening and closing of the electromagnetic valves according to the change of LNG (liquefied natural gas) demands.
It can be understood that the electromagnetic valve 1 can control the on-off of the superconducting energy pipelines 110 in the same group, and when the electromagnetic valve 1 is opened, the superconducting energy pipelines 110 in the same group are communicated; when the electromagnetic valve 1 is closed, the superconducting energy pipelines 110 in the same group are interrupted; since the control system 170 can be used to control the opening and closing of the electromagnetic valves 1 and 2, when the demand of LNG is reduced, the control system 170 can control the electromagnetic valve 1 to open and the electromagnetic valve 2 to close, so as to realize the circulation flow of LNG in the pipeline.
In some preferred embodiments, a plurality of the superconducting energy pipelines are included between the liquid storage tanks, an even number of the superconducting energy pipelines are set into a group in pairs, and the superconducting energy pipelines in the same group are connected by a first electromagnetic valve.
In some preferred embodiments, the refrigeration unit 150 is a mixed refrigerant refrigerator.
In some preferred embodiments, the heat exchanger 160 uses liquid nitrogen as a cooling medium.
The operation control system of the superconducting energy pipeline controls reverse transportation, when the demand of LNG is reduced, the excess LNG is reversely transported back to the starting point, the pipeline used for reverse transportation is a common transportation pipeline, a mixed working medium refrigerating machine is adopted for cooling in order to ensure that the temperature rise in the transportation process is overlarge, finally, the LNG transported reversely enters a liquid storage tank and enters a heat exchanger for heat exchange with liquid nitrogen before entering the liquid storage tank, and enters the liquid storage tank after further cooling, and the adjustment of the transportation amount of the LNG is realized on the premise of normal power transportation.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
Of course, the cathode material of the operation control system of the superconducting energy pipeline of the invention can also have various changes and modifications, and is not limited to the specific structure of the above embodiment. In conclusion, the scope of the present invention should include those changes or substitutions and modifications which are obvious to those of ordinary skill in the art.
Claims (4)
1. An operation control system of a superconducting energy pipeline, comprising: the system comprises a superconducting energy pipeline, a first liquid storage tank, a second liquid storage tank, an LNG immersed pump, a refrigeration unit and a heat exchanger, wherein the first liquid storage tank and the second liquid storage tank are connected with two ends of the superconducting energy pipeline, the LNG immersed pump is connected with one end of the second liquid storage tank through a pipeline, the refrigeration unit is connected with the LNG immersed pump through a pipeline, the heat exchanger is connected with the other first liquid storage tank through a pipeline, when the demand of LNG is reduced, the excess LNG is reversely conveyed to the LNG immersed pump through the second liquid storage tank, is cooled through the refrigeration unit, enters the heat exchanger for heat exchange, and then enters the first liquid storage tank.
2. The system according to claim 1, wherein a plurality of the superconducting energy pipelines are disposed between the liquid storage tanks, an even number of the superconducting energy pipelines are grouped into two by two, and the superconducting energy pipelines in the same group are connected by a first solenoid valve.
3. The system according to claim 1, wherein the refrigerating unit is a mixed refrigerant refrigerator.
4. The system for controlling the operation of a superconducting energy pipeline according to claim 1, wherein the heat exchanger uses liquid nitrogen as a cooling medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911125316.2A CN110848563B (en) | 2019-11-18 | 2019-11-18 | Operation control system of superconducting energy pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911125316.2A CN110848563B (en) | 2019-11-18 | 2019-11-18 | Operation control system of superconducting energy pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110848563A true CN110848563A (en) | 2020-02-28 |
| CN110848563B CN110848563B (en) | 2021-07-16 |
Family
ID=69600606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911125316.2A Active CN110848563B (en) | 2019-11-18 | 2019-11-18 | Operation control system of superconducting energy pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110848563B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19820379C1 (en) * | 1998-05-07 | 1999-07-08 | Felten & Guilleaume Ag | Regenerative use of power loss of at least one heavy current cable |
| CA2295565A1 (en) * | 1998-05-22 | 1999-12-02 | Sumitomo Electric Industries, Ltd. | Method and device for cooling superconductor |
| CN2767916Y (en) * | 2005-01-28 | 2006-03-29 | 中国科学院理化技术研究所 | Super-cooling liquefied nitrogen circulation cooling apparatus for cooling high temperature superconducting cable |
| CN102679152A (en) * | 2012-04-20 | 2012-09-19 | 西安交通大学 | United long-range transmission system for liquefied natural gas and high-temperature superconducting electric energy |
| CN103262179A (en) * | 2011-02-25 | 2013-08-21 | 株式会社前川制作所 | Superconducting cable cooling system |
| CN109654376A (en) * | 2019-01-02 | 2019-04-19 | 西南石油大学 | A kind of superconducting energy pipe-line system based on LNG pre-cooling transmission |
-
2019
- 2019-11-18 CN CN201911125316.2A patent/CN110848563B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19820379C1 (en) * | 1998-05-07 | 1999-07-08 | Felten & Guilleaume Ag | Regenerative use of power loss of at least one heavy current cable |
| CA2295565A1 (en) * | 1998-05-22 | 1999-12-02 | Sumitomo Electric Industries, Ltd. | Method and device for cooling superconductor |
| CN2767916Y (en) * | 2005-01-28 | 2006-03-29 | 中国科学院理化技术研究所 | Super-cooling liquefied nitrogen circulation cooling apparatus for cooling high temperature superconducting cable |
| CN103262179A (en) * | 2011-02-25 | 2013-08-21 | 株式会社前川制作所 | Superconducting cable cooling system |
| CN102679152A (en) * | 2012-04-20 | 2012-09-19 | 西安交通大学 | United long-range transmission system for liquefied natural gas and high-temperature superconducting electric energy |
| CN109654376A (en) * | 2019-01-02 | 2019-04-19 | 西南石油大学 | A kind of superconducting energy pipe-line system based on LNG pre-cooling transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110848563B (en) | 2021-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104613577B (en) | Internal melt ice-chilling air conditioning system and its operation method | |
| US10892642B2 (en) | Compressed air energy storage power generation apparatus and compressed air energy storage power generation method | |
| KR101858632B1 (en) | Arrangement for electrical connection of two electric units | |
| CN110381698B (en) | Serial-type liquid-gas double-channel data center refrigerating system | |
| Yamaguchi et al. | Low voltage and large current DC superconducting power cable designs for 10 km to 100km transmission line using experimental data of Ishikari project | |
| CN115406020A (en) | Low-position closed chilled water storage and cooling system | |
| CN110848563B (en) | Operation control system of superconducting energy pipeline | |
| US5669228A (en) | System for utilizing exhaust heat of stationary induction apparatus | |
| Hirano et al. | Development of cooling technologies for SMES | |
| CN116683086A (en) | Centralized liquid cooling system of energy storage battery | |
| Lee et al. | Cryogenic refrigeration system for HTS cables | |
| CN113013903B (en) | Multi-energy composite superconducting microgrid system | |
| JP4964439B2 (en) | Operation method of heat storage enhancement system by cooling coil | |
| CN115773609A (en) | Temperature control method of high-temperature superconducting cable cooling system | |
| CN114867312A (en) | Heat recovery type liquid cooling system | |
| Liu et al. | Application of emergency control of central air conditioning in safe and stable operation of large power grid | |
| Liu et al. | Modelling and control of central air‐conditioning loads for power system emergency frequency control | |
| Li et al. | Cooling unit for the 500 kV saturated iron core fault current limiter | |
| CN110853833B (en) | Device for cooling superconducting cable | |
| CN209726400U (en) | The multistage balanced type pipe network of refrigeration equipment | |
| CN103093946B (en) | The adjustable superconductive controllable reactor of a kind of stepping | |
| CN210900080U (en) | Converter valve cooling system | |
| CN103353151B (en) | The ice-storage air-conditioning system of LNG cold energy recycle can be realized | |
| CN217520112U (en) | Running chilled water system | |
| CN107610835B (en) | The superconducting energy pipeline of the cooling CF4 protection of liquefied natural gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |