CN114992429A - Long-distance conveying system for double-medium and superconducting energy source same pipeline conveying - Google Patents
Long-distance conveying system for double-medium and superconducting energy source same pipeline conveying Download PDFInfo
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- CN114992429A CN114992429A CN202110225152.1A CN202110225152A CN114992429A CN 114992429 A CN114992429 A CN 114992429A CN 202110225152 A CN202110225152 A CN 202110225152A CN 114992429 A CN114992429 A CN 114992429A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/028—Composition or method of fixing a thermally insulating material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
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- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention belongs to the technical field of LNG (liquefied natural gas) conveying and superconduction, and relates to a long-distance conveying system for conveying double media and superconducting energy sources by the same pipeline. The long-distance transmission system comprises an outer pipeline, a cold insulation material layer, an LNG pipeline and a superconducting cable; the cold insulation material layer is attached to the outer side of the outer pipeline; the LNG pipeline and the superconducting cable are arranged inside the outer pipeline; the rest space in the outer pipeline is filled with a low-temperature intermediate medium; and an intermediate pressurizing and cooling station is arranged in the long-distance conveying system along the way. The invention solves the defects of the prior art of superconducting power transmission, can realize long-distance transportation of natural gas in a liquid form, and reduces the transportation cost of the natural gas.
Description
Technical Field
The invention belongs to the technical field of LNG (liquefied natural gas) conveying and superconduction, and particularly relates to a long-distance conveying system for conveying double media and superconducting energy sources in the same pipeline.
Background
In recent years, the technology of liquefying natural gas is rapidly developed at home, and LNG can be used as a refrigerant medium at the temperature of minus 161.5 ℃ under normal pressure and at a lower temperature. After 1 cubic meter of LNG is gasified, the volume is expanded by 600 times, and a large amount of natural gas is transported, so that liquid transportation is more economical than gas transportation. Meanwhile, the refrigeration device for conventionally liquefying natural gas has high power consumption and high cost.
The thermoacoustic refrigerator has no moving parts, simple structure and long service life. Compared with the prior refrigerating system, the equipment can greatly reduce energy consumption and save investment.
The superconducting material has extremely low resistance and small transmission loss, and is an ideal transmission material, but the existing superconducting materials can form a superconducting state only by extremely low temperature, so that a cold medium is needed to enable a superconducting transmission cable to be below a superconducting critical transition temperature in engineering so as to carry out superconducting transmission.
Disclosure of Invention
The invention aims to: the long-distance transmission system for the double-medium and superconducting energy same-pipeline transmission is provided, so that a superconducting transmission cable is at an extremely low temperature, the defects of superconducting transmission in the prior art are overcome, meanwhile, the long-distance transmission of natural gas in a liquid form is realized, and the natural gas transmission cost is reduced.
In order to achieve the above object, the present invention provides a long transport system for transporting dual mediums and superconducting energy in the same pipeline, the long transport system comprising an outer pipeline, a cold insulation material layer, an LNG pipeline and a superconducting cable;
the cold insulation material layer is attached to the outer side of the outer pipeline;
the LNG pipeline and the superconducting cable are arranged inside the outer pipeline;
the rest space in the outer pipeline is filled with a low-temperature intermediate medium;
and an intermediate pressurizing and cooling station is arranged in the long-distance conveying system along the way.
Preferably, the LNG pipeline is disposed above and the superconducting cable is disposed below; and one supporting plate is arranged every 5-10 meters and used for supporting the LNG pipeline.
Preferably, middle pressure boost cooling station, outer pipeline are separated for two sections, and the outer pipeline of anterior segment is equipped with middle medium discharge port, and the outer pipeline of back end is equipped with middle medium filling opening, middle pressure boost cooling station is equipped with cold insulation box for hold the tip of two sections outer pipelines and the superconductive cable that does not cut off, the LNG pipeline is drawn forth in the outer pipeline of anterior segment, passes cold insulation box after, with LNG booster pump access connection, LNG booster pump export and back end outer pipeline in LNG pipeline connection.
Preferably, the intermediate medium is led out from the intermediate medium outlet, pressurized by an intermediate medium booster pump, cooled by a thermoacoustic refrigerator and conveyed to the intermediate medium injection port, and meanwhile, a safety valve is arranged on the leading-out pipeline.
Preferably, the remaining space in the cold box is filled with pearlife.
Preferably, the intermediate medium pipeline and the LNG pipeline which are led out from the outer pipeline are externally attached with cold insulation material layers.
Preferably, the material of the cold insulation material layer is polyisocyanurate and/or silica aerogel felt.
Preferably, the cryogenic intermediate medium is a liquid inert gas, more preferably liquid nitrogen and/or liquid argon.
Preferably, the outer pipe is provided with upper and lower surface thermometers along its course.
The invention has the following effects: the power transmission cable is below the superconducting critical transition temperature, the superconducting material has extremely low resistance, the power transmission loss is small, and superconducting transmission is realized. Meanwhile, the LNG pipeline is soaked in the low-temperature intermediate medium, the on-way temperature rise of the LNG is greatly reduced, and the liquid-state conveying of the natural gas is realized. Meanwhile, the temperature of the intermediate medium is lower than the temperature of the LNG, so that the additional arrangement of a refrigerating device in the LNG long-distance transmission system is avoided, the process flow is greatly simplified, and a large amount of cost is saved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 shows a schematic diagram of a long-distance transportation system for transporting double media and superconducting energy sources together with a pipeline, which is provided by the invention.
Fig. 2 shows a cross-sectional view of the inside of the long-distance transportation system for transporting the double-medium and superconducting energy source together with the pipeline.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein.
The invention provides a long-distance transmission system for transmitting double media and superconducting energy by the same pipeline, which comprises an outer pipeline, a cold insulation material layer, an LNG pipeline and a superconducting cable;
the cold insulation material layer is attached to the outer side of the outer pipeline;
the LNG pipeline and the superconducting cable are arranged inside the outer pipeline;
the rest space in the outer pipeline is filled with a low-temperature intermediate medium;
and an intermediate pressurizing and cooling station is arranged in the long-distance conveying system along the way.
According to the present invention, preferably, the LNG pipeline is disposed above and the superconducting cable is disposed below; and one supporting plate is arranged every 5-10 meters and used for supporting the LNG pipeline.
Due to the influence of solar radiation and the like, the temperature of LNG in the LNG pipeline rises along with the increase of the conveying distance, the temperature rise is also caused by the heat absorption of low-temperature intermediate medium in the outer pipeline, in addition, due to the influence of pipeline friction, the pressure in the LNG pipeline is reduced along with the increase of the conveying distance, and in order to ensure the cooling effect of the intermediate medium and maintain the pressure in the LNG pipeline, an intermediate pressurizing and cooling station is preferably arranged along the way in the long-distance conveying system.
According to a specific embodiment of the present invention, in the intermediate pressurizing and cooling station, the outer pipeline is divided into two sections, the outer pipeline of the front section is provided with an intermediate medium outlet, the intermediate medium after being heated is discharged, the outer pipeline of the rear section is provided with an intermediate medium inlet, a low-temperature intermediate medium is injected, the distance between the front section and the outer pipeline of the rear section is as short as possible, the intermediate pressurizing and cooling station is provided with a cold insulation box for accommodating the end portions of the two sections of outer pipelines and the non-separated superconducting cable, the LNG pipeline is led out from the outer pipeline of the front section, passes through the cold insulation box and is connected with an inlet of the LNG booster pump, and an outlet of the LNG booster pump is connected with the LNG pipeline in the outer pipeline of the rear section. In the process, the injection and the discharge of the intermediate medium are intermittent operation and discontinuous operation, and the LNG pressurization is continuous operation.
According to the present invention, in the intermediate desuperheating station, when the LNG pipeline is not located in the outer pipeline, a cold insulation material layer is preferably attached to the outside of the intermediate desuperheating station to maintain the low temperature environment of the pipeline. The outer part of the intermediate medium pipeline led out from the outer pipeline is also preferably provided with a cold insulation material layer in an attached mode.
To maintain the temperature in the cold box, it is preferable that the remaining space in the cold box is filled with pearl sand.
In the present invention, the cooling material layer is provided for dew condensation prevention, and the material thereof may be Polyisocyanurate (PIR) and/or silica aerogel blanket (SA).
In the present invention, the cryogenic intermediate medium may be a liquid inert gas, preferably liquid nitrogen or liquid argon (e.g., liquid argon at-184.3 ℃ C. under 20 kPa).
According to the invention, the outer pipe is preferably provided with upper and lower surface thermometers along the way for monitoring the temperature of the intermediate medium in the outer pipe.
The present invention is illustrated in more detail by the following examples.
Example 1
As shown in fig. 1, the long-distance transportation system for transporting dual-medium and superconducting energy sources with a pipeline according to the present invention includes:
the outer pipeline and the cold insulation material layer attached to the outer side of the outer pipeline; the cold insulation material layer is polyisocyanurate and is used for reducing the temperature rise of the intermediate medium, and meanwhile, an upper surface thermometer and a lower surface thermometer are arranged along the outer pipeline and are used for monitoring the temperature of the intermediate medium;
the LNG pipeline is arranged in the outer pipeline and used for conveying LNG, and two ends of the LNG pipeline are respectively connected with an LNG selling end and an LNG downstream user;
the superconducting cable is arranged in the outer pipeline and used for power transmission, and two ends of the superconducting cable are respectively connected with two cable terminals;
as shown in fig. 2, the LNG pipeline is disposed at the upper side, and the superconducting cable is disposed at the lower side; arranging a supporting plate every 6 m for supporting the LNG pipeline;
the rest space in the outer pipeline is filled with low-temperature intermediate medium liquid nitrogen;
and an intermediate pressurizing and cooling station is arranged in the long-distance conveying system along the way. Middle pressure boost cooling station, outer pipeline are separated for two sections, and outer pipeline top of anterior segment is equipped with middle medium discharge port, and middle medium after the intensification is discharged, and outer pipeline top of back end is equipped with middle medium filling opening, pours into medium in the middle of the low temperature into, and anterior segment and back end outer pipeline interval are short as far as possible, simultaneously middle pressure boost cooling station is equipped with cold insulation box for hold the tip of two sections outer pipelines and the superconductive cable that does not cut off, the LNG pipeline is drawn forth in the outer pipeline of anterior segment, passes cold insulation box after, with LNG booster pump access connection, LNG booster pump export and back end outer pipeline in LNG pipeline are connected. In the process, the injection and the discharge of the intermediate medium are intermittent operation, and the LNG pressurization is continuous operation. And cold insulation materials are filled outside the intermediate medium pipeline and the LNG pipeline, and the rest space of the cold insulation box is filled with pearlife.
The method realizes long-distance transportation of LNG and superconducting energy in the same pipeline. The power transmission cable is below the superconducting critical transition temperature, the superconducting material has extremely low resistance, the power transmission loss is small, and superconducting transmission is realized. Meanwhile, the LNG pipeline is soaked in the low-temperature intermediate medium, the on-way temperature rise of the LNG is greatly reduced, the liquid-state conveying of the natural gas is realized, and meanwhile, the arrangement of a refrigerating device in the LNG long-distance conveying system is saved, so that the process flow is optimized, and a large amount of cost is saved.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A long-distance transmission system for transmitting double media and superconducting energy by the same pipeline is characterized by comprising an outer pipeline, a cold insulation material layer, an LNG pipeline and a superconducting cable;
the cold insulation material layer is attached to the outer side of the outer pipeline;
the LNG pipeline and the superconducting cable are arranged inside the outer pipeline;
the rest space in the outer pipeline is filled with a low-temperature intermediate medium;
and an intermediate pressurizing and cooling station is arranged in the long-distance conveying system along the way.
2. The long transport system for the co-pipeline transportation of bi-media and superconducting energy according to claim 1, wherein the LNG pipeline is disposed above and the superconducting cable is disposed below; and one supporting plate is arranged every 5-10 meters and used for supporting the LNG pipeline.
3. The long distance transport system of dual media and superconducting energy in the same pipeline as the claim 1, wherein the intermediate booster cooling station has an outer pipeline divided into two sections, an intermediate medium outlet port is provided on the outer pipeline of the front section, an intermediate medium inlet port is provided on the outer pipeline of the rear section, a cold insulation box is provided on the intermediate booster cooling station for accommodating the end portions of the two sections of outer pipelines and the non-isolated superconducting cable, the LNG pipeline is led out from the outer pipeline of the front section, passes through the cold insulation box and is connected with an inlet of the LNG booster pump, and an outlet of the LNG booster pump is connected with the LNG pipeline in the outer pipeline of the rear section.
4. The long-distance transportation system for transporting the dual-medium and superconducting energy by the same pipeline as the claim 3 is characterized in that the intermediate medium is led out from the intermediate medium outlet, pressurized by the intermediate medium booster pump, cooled by the thermoacoustic refrigerator and transported to the intermediate medium inlet, and the safety valve is arranged on the leading-out pipeline.
5. The long-distance transportation system for transporting the double media and the superconducting energy source by the same pipeline as the claim 3, wherein the remaining space in the cold insulation box is filled with pearlife.
6. The long-distance transportation system for transporting the double-medium and superconducting energy together with the pipeline as claimed in any one of claims 3 to 5, wherein a cold insulation material layer is attached to the outer portions of the intermediate medium pipeline and the LNG pipeline which are led out from the outer pipeline.
7. The long-distance transport system for transporting the double-medium and superconducting energy source with the pipeline as claimed in any one of claims 1 to 5, wherein the material of the cold-insulation material layer is polyisocyanurate and/or silica aerogel felt.
8. The long-distance transport system for transporting the dual media and the superconducting energy source together with the pipeline according to any one of claims 1-5, wherein the low-temperature intermediate medium is liquid inert gas.
9. The long-distance transport system for transporting dual media and superconducting energy with a pipeline according to claim 8, wherein the low-temperature intermediate medium is liquid nitrogen and/or liquid argon.
10. The long-distance delivery system for transporting the bimedia and the superconducting energy with the pipeline as claimed in any one of claims 1 to 5, wherein the outer pipeline is provided with upper and lower surface thermometers along the way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110225152.1A CN114992429A (en) | 2021-03-01 | 2021-03-01 | Long-distance conveying system for double-medium and superconducting energy source same pipeline conveying |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110225152.1A CN114992429A (en) | 2021-03-01 | 2021-03-01 | Long-distance conveying system for double-medium and superconducting energy source same pipeline conveying |
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| CN114992429A true CN114992429A (en) | 2022-09-02 |
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| CN202110225152.1A Pending CN114992429A (en) | 2021-03-01 | 2021-03-01 | Long-distance conveying system for double-medium and superconducting energy source same pipeline conveying |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005090636A (en) * | 2003-09-17 | 2005-04-07 | Ebara Corp | Transportation system for liquefied hydrogen |
| CN1989575A (en) * | 2004-07-29 | 2007-06-27 | 住友电气工业株式会社 | Superconducting cable line |
| CN101002290A (en) * | 2004-07-29 | 2007-07-18 | 住友电气工业株式会社 | Superconductive cable line |
| CN101137865A (en) * | 2003-11-04 | 2008-03-05 | 底古萨股份公司 | Conduit component for a power supply network, use thereof, method for transporting cryogenic energy carriers in conduits and devices suitable therefor |
| CN105179823A (en) * | 2015-09-29 | 2015-12-23 | 四川师范大学 | Liquidation shale gas-liquid nitrogen-superconduction direct current cable composite energy resource transmission system |
| CN109140064A (en) * | 2018-07-20 | 2019-01-04 | 中国科学院电工研究所 | A kind of superconducting energy pipeline that low temp fuel conduction is cooling |
| CN110021460A (en) * | 2019-04-29 | 2019-07-16 | 中国科学院电工研究所 | A kind of superconducting energy pipeline of the resistance to ablation of impact resistance |
-
2021
- 2021-03-01 CN CN202110225152.1A patent/CN114992429A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005090636A (en) * | 2003-09-17 | 2005-04-07 | Ebara Corp | Transportation system for liquefied hydrogen |
| CN101137865A (en) * | 2003-11-04 | 2008-03-05 | 底古萨股份公司 | Conduit component for a power supply network, use thereof, method for transporting cryogenic energy carriers in conduits and devices suitable therefor |
| CN1989575A (en) * | 2004-07-29 | 2007-06-27 | 住友电气工业株式会社 | Superconducting cable line |
| CN101002290A (en) * | 2004-07-29 | 2007-07-18 | 住友电气工业株式会社 | Superconductive cable line |
| CN105179823A (en) * | 2015-09-29 | 2015-12-23 | 四川师范大学 | Liquidation shale gas-liquid nitrogen-superconduction direct current cable composite energy resource transmission system |
| CN109140064A (en) * | 2018-07-20 | 2019-01-04 | 中国科学院电工研究所 | A kind of superconducting energy pipeline that low temp fuel conduction is cooling |
| CN110021460A (en) * | 2019-04-29 | 2019-07-16 | 中国科学院电工研究所 | A kind of superconducting energy pipeline of the resistance to ablation of impact resistance |
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