CN108594036B - Communicating vessel type testing device for superconducting strip electrification test - Google Patents
Communicating vessel type testing device for superconducting strip electrification test Download PDFInfo
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- CN108594036B CN108594036B CN201810272857.7A CN201810272857A CN108594036B CN 108594036 B CN108594036 B CN 108594036B CN 201810272857 A CN201810272857 A CN 201810272857A CN 108594036 B CN108594036 B CN 108594036B
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
A communicating vessel type testing device for a superconductive strip energization test is characterized in that a superconductive strip is placed in an insulated pipeline, two ends of the insulated pipeline are connected with connecting terminals, two ends of the insulated pipeline are respectively connected with two insulated containers through valves, a gas filling pipeline and a liquid filling pipeline are respectively arranged on each insulated container, low-temperature media are filled in the insulated containers through the liquid filling pipelines, the insulated pipelines are completely filled with the low-temperature media, air pillow pressure difference exists in the two insulated containers through the gas filling pipelines, current is introduced into the superconductive strip through the connecting terminals to enable the superconductive strip to reach a superconductive state, the gas filling pipelines on two sides are connected during testing to enable the air pillow pressure of the two low-temperature insulated containers to reach balance, the low-temperature media flow to the other side through one side of the insulated pipeline, and instantaneous state voltage information of the superconductive strip is measured through a voltage sensor arranged on the superconductive strip, and after the low-temperature medium stops flowing, cutting off the power supply to finish the test.
Description
Technical Field
The invention belongs to the field of low-temperature test devices, and particularly relates to a communicating vessel type test device for a superconductive strip energization test.
Background
Superconducting materialThe superconductor has the electrical engineering characteristics of zero resistance, high density current-carrying capacity and the like, and if the superconductor is made into a superconducting tape, the current-carrying capacity can reach 100-1000A/mm2The current-carrying capacity of the common copper wire or aluminum wire is 50-500 times that of the common copper wire or aluminum wire, and the transmission loss in a direct current state is zero, so that the power equipment prepared by utilizing the superconducting tape has the advantages of low loss, high efficiency, small occupied area and the like.
The superconducting power transmission device is mainly composed of a superconducting tape, an insulating material, and a cryogenic insulation container for maintaining a superconducting state. The low-temperature heat-insulating container is widely used in the industrial production and transportation industries due to the characteristics of safety, high efficiency and the like. In general, a low-temperature heat-insulating container has a double-layer structure including an inner container and an outer container, and in order to reduce heat transfer, an insulating layer is generally coated on the outer container, and a vacuum is drawn in a space between the inner container and the outer container.
The operation of superconducting equipment needs a low-temperature environment, the operating temperature range of the current superconductor is 4K to 77K, the low-temperature characteristic of liquid hydrogen (about 20K) is widely applied to the superconducting field, and the capacity of a power device can be remarkably improved and the response speed of a power system to load change can be improved by utilizing a liquid hydrogen conveying pipe in combination with superconducting power transmission. In addition, the liquid hydrogen can be used as a refrigerating medium of the superconducting strip, so that the refrigerating cost of superconducting power transmission can be effectively reduced.
In the existing superconducting tape testing device, the types of media providing low-temperature environment comprise gas, liquid or solid, most of the media are in a static state, and forced movement is not performed except natural convection.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a testing device for a superconducting strip energization test, wherein a low-temperature medium in the testing device is in an integral directional flowing state and is used for simulating superconducting power transmission equipment for simultaneously transmitting chemical energy and electric energy.
The technical scheme of the invention is as follows:
a communicating vessel type testing device for a superconductive strip energization test comprises a liquid filling pipeline, a gas filling pipeline, a heat insulation container, a heat insulation pipeline, a valve and a connecting terminal;
the superconductive belt material is placed in the heat insulation pipeline, two ends of the superconductive belt material are connected with the connecting terminals, two ends of the heat insulation pipeline are respectively connected with the two heat insulation containers through valves, each heat insulation container is respectively provided with a gas filling pipeline and a liquid filling pipeline, a liquid filling pipeline is used for filling a low-temperature medium into the heat insulation container, the heat insulation pipeline is completely filled with the low-temperature medium, the pressure difference of the air pillows exists in the two heat-insulating containers through the gas filling pipeline, the current is introduced to the superconducting tape through the wiring terminal, so that the superconducting tape reaches a superconducting state, and during testing, the gas filling pipelines at two sides are connected to balance the air pillow pressure of the two low-temperature heat-insulating containers, the low-temperature medium flows from one side to the other side through the heat-insulating pipeline, the instantaneous state voltage information of the superconducting tape is measured by a voltage sensor arranged on the superconducting tape, and after the flow stops, the power supply is cut off to finish the test.
A communicating vessel type testing device for a superconductive strip energization test comprises a liquid filling pipeline, a gas filling pipeline, a heat insulation container, a heat insulation pipeline, a valve and a connecting terminal;
the superconductive belt material is placed in the heat insulation pipeline, two ends of the heat insulation pipeline are connected with connecting terminals, two ends of the heat insulation pipeline are respectively connected with two heat insulation containers through valves, a gas filling pipeline and a liquid filling pipeline are respectively arranged on each heat insulation container, low-temperature medium is filled into the heat insulation containers through the liquid filling pipeline, the low-temperature medium is fully filled in the heat insulation pipeline, air pillow pressure difference exists in the two heat insulation containers through the gas filling pipeline, current is introduced into the superconductive belt material through the connecting terminals, so that the superconductive belt material reaches a superconductive state, during testing, the air pillow pressure of the two low-temperature heat insulation containers reaches balance through the air leakage pore plate arranged on the gas filling pipeline on the high-pressure end heat insulation container, the low-temperature medium flows to the other side through one side of the heat insulation pipeline, and the voltage information of the instantaneous, and after the flow stops, cutting off the power supply to finish the test.
Furthermore, the pressure difference of the air pillow is larger than the error measurement precision of the pressure sensor.
Further, the superconducting tape may be removed and replaced before the test is started.
Furthermore, the wiring terminal is led out through an opening in the heat insulation pipeline, and the wiring terminal is hermetically insulated from the opening.
Further, the connection terminal is welded to the superconducting tape.
Further, the cryogenic medium is liquid helium, liquid nitrogen, liquid hydrogen or liquefied natural gas.
Furthermore, the liquid level difference of the two low-temperature heat-insulating containers is monitored through a liquid level sensor, the air pillow pressure difference of the two low-temperature heat-insulating containers is monitored through a pressure difference sensor, and the numerical relation between the liquid level difference and the air pillow pressure difference accords with the Archimedes' law.
Compared with the prior art, the invention has the beneficial effects that:
in order to make the low-temperature medium generate directional flow in the heat insulation pipeline, according to the invention, the pressurized gas is filled into the low-temperature heat insulation containers through the gas filling pipeline, so that the low-temperature medium in the two low-temperature heat insulation containers generates a height difference, and then the pressure of the gas pillows at the two sides of the communicating vessel is balanced, so that the low-temperature medium can generate directional flow around the superconducting tape. In this way, the stability of the superconducting state of different types of superconducting tapes in different low-temperature media can be tested.
Drawings
FIG. 1 is a schematic cross-sectional view of a test apparatus with a communicator concept according to one embodiment of the present invention.
Detailed Description
The object to be tested of the communicating vessel type testing device shown in the attached drawing is a superconducting strip 7, the superconducting strip is connected with a connecting terminal 6 in a welding mode and is placed in a heat insulation pipeline 4, the heat insulation pipeline 4 is respectively connected with two low-temperature heat insulation containers 3 through large-caliber low-temperature valves 5, low-temperature media 8 are filled in the low-temperature heat insulation containers 3, and the low-temperature media 8 can be liquid helium, liquid nitrogen, liquid hydrogen or liquefied natural gas and other low-temperature media.
In the test preparation stage, the large-caliber low-temperature valve 5 is opened, the low-temperature medium 8 is filled into the two low-temperature heat-insulating containers 3 through the two liquid filling pipelines 1 at the same time until the heat-insulating pipelines 4 are completely filled with the low-temperature medium 8. Then, the gas pillow pressurized gas is filled into the low-temperature heat-insulating container 3 on one side through the gas filling pipeline 2 on one side, the liquid level difference of the two low-temperature heat-insulating containers 3 is monitored through the liquid level meter, the gas filling is stopped after a certain value is reached, the liquid level difference of the two low-temperature heat-insulating containers is monitored through the liquid level sensor 9, the gas pillow pressure difference of the two low-temperature heat-insulating containers is monitored through the pressure difference sensor 10, and the numerical relation between the liquid level difference and the gas pillow pressure difference accords with the Archimedes law. After the system is sufficiently cooled, a certain current (for example, meeting the superconducting state requirement or lower than the quench critical value) is introduced into the superconducting tape 7 through the connecting terminal 6, so that the superconducting tape 7 reaches the superconducting state.
During operation of the test device, one solution is: the gas filling pipelines 2 at two sides are connected through the high-low pressure balance pipeline 12 by opening the high-low pressure balance valve 11, so that the air pillow pressures of the two low-temperature heat-insulation containers 3 are balanced, at the moment, due to the action of gravity, the low-temperature medium 8 flows from one side to the other side through the heat-insulation pipeline 4, the instantaneous state voltage information of the superconducting tape is measured through the voltage sensor arranged on the superconducting tape 7, after the flow stops, the power supply is cut off, and the test is terminated.
The other scheme is as follows: the gas leakage pore plate 13 arranged on the gas filling pipeline on the high-pressure end heat insulation container 3 is used for discharging gas, so that the gas pillow pressures of the two low-temperature heat insulation containers 3 are balanced, at the moment, due to the action of gravity, the low-temperature medium 8 flows from one side to the other side through the heat insulation pipeline 4, the voltage sensor arranged on the superconducting strip 7 is used for measuring the instantaneous state voltage information of the superconducting strip, and after the flowing stops, the power supply is cut off, and the test is stopped.
The invention has not been described in detail in part of the common general knowledge of those skilled in the art.
Claims (8)
1. A connector type testing device for a superconductive strip energization test is characterized in that: the device comprises a liquid filling pipeline (1), a gas filling pipeline (2), a heat-insulating container (3), a heat-insulating pipeline (4), a valve (5) and a connecting terminal (6);
the superconducting tape (7) is placed in the heat insulation pipeline (4), two ends of the heat insulation pipeline (4) are connected with the connecting terminals (6), two ends of the heat insulation pipeline (4) are respectively connected with the two heat insulation containers (3) through the valves (5), each heat insulation container (3) is respectively provided with the gas filling pipeline (2) and the liquid filling pipeline (1), low-temperature media are filled into the heat insulation containers (3) through the liquid filling pipelines, the heat insulation pipeline (4) is completely filled with the low-temperature media (8), the gas filling pipelines (2) enable the air pillow pressure difference to exist in the two heat insulation containers (3), current is introduced into the superconducting tape (7) through the connecting terminals (6), the superconducting tape (7) is enabled to reach a superconducting state, during testing, the gas filling pipelines (2) on two sides are connected, the air pillow pressures of the two heat insulation containers (3) are enabled to be balanced, the low-temperature media (8) flow from one side to the other side through the, the voltage sensor arranged on the superconducting tape (7) is used for measuring the instantaneous state voltage information of the superconducting tape, and after the flow stops, the power supply is cut off, so that the test is completed.
2. A connector type testing device for a superconductive strip energization test is characterized in that: the device comprises a liquid filling pipeline (1), a gas filling pipeline (2), a heat-insulating container (3), a heat-insulating pipeline (4), a valve (5) and a connecting terminal (6);
the superconducting tape (7) is placed in the heat insulation pipeline (4), two ends of the heat insulation pipeline (4) are connected with the connecting terminals (6), two ends of the heat insulation pipeline (4) are respectively connected with the two heat insulation containers (3) through the valves (5), each heat insulation container (3) is respectively provided with the gas filling pipeline (2) and the liquid filling pipeline (1), low-temperature media are filled into the heat insulation containers (3) through the liquid filling pipelines, the heat insulation pipelines (4) are completely filled with the low-temperature media (8), the gas filling pipelines (2) enable the two heat insulation containers (3) to have air pillow pressure difference, the connecting terminals (6) enable the superconducting tape (7) to reach a superconducting state, and during testing, the air pillow pressure of the two heat insulation containers (3) is balanced through the gas discharging pore plate (13) arranged on the gas filling pipeline on the high-pressure-end heat insulation container (3), the low-temperature medium (8) flows from one side to the other side through the heat insulation pipeline (4), the voltage sensor arranged on the superconducting tape (7) is used for measuring the instantaneous state voltage information of the superconducting tape, and after the flow stops, the power supply is cut off, so that the test is completed.
3. The apparatus of claim 1 or 2, wherein: the air pillow pressure difference is larger than the error measurement precision of a differential pressure sensor, and the differential pressure sensor is used for monitoring the air pillow pressure difference of the two heat-insulating containers.
4. The apparatus of claim 1 or 2, wherein: before the test begins, the superconducting tape (7) can be removed and replaced.
5. The apparatus of claim 1 or 2, wherein: the wiring terminal (6) is led out through an opening on the heat insulation pipeline, and the wiring terminal is sealed and insulated from the opening.
6. The apparatus of claim 1 or 2, wherein: the connecting terminal (6) is welded on the superconducting strip.
7. The apparatus of claim 1 or 2, wherein: the cryogenic medium (8) is liquid helium, liquid nitrogen, liquid hydrogen or liquefied natural gas.
8. The apparatus of claim 1 or 2, wherein: the liquid level difference of the two heat-insulating containers is monitored by the liquid level sensor (9), the air pillow pressure difference of the two heat-insulating containers is monitored by the pressure difference sensor (10), and the numerical relation between the liquid level difference and the air pillow pressure difference accords with the Archimedes' law.
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| CN201810272857.7A CN108594036B (en) | 2018-03-29 | 2018-03-29 | Communicating vessel type testing device for superconducting strip electrification test |
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| CN108594036B true CN108594036B (en) | 2020-12-15 |
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| CN113064108A (en) * | 2021-03-15 | 2021-07-02 | 西安交通大学 | Device for measuring quenching and recovery characteristics of superconducting tape under forced convection cooling |
| CN115333329B (en) * | 2022-06-23 | 2023-04-07 | 北京航天试验技术研究所 | Double-evaporation condensation circulating hydrogen energy aircraft high-temperature superconducting motor cooling device and method |
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| CN101446609A (en) * | 2008-11-25 | 2009-06-03 | 中国电力科学研究院 | Measurement device of critical current properties of high-temperature superconducting tape |
| CN102496679A (en) * | 2011-11-03 | 2012-06-13 | 上海交通大学 | Liquid nitrogen low-temperature system for superconducting current limiter |
| CN102928332A (en) * | 2012-11-22 | 2013-02-13 | 淮南中科储能科技有限公司 | Dynamic corrosion device of high-temperature liquid medium |
| CN104198803A (en) * | 2014-09-04 | 2014-12-10 | 中国科学院电工研究所 | High-temperature superconducting magnet online monitoring system |
| CN106371043A (en) * | 2016-08-15 | 2017-02-01 | 富通集团有限公司 | Superconducting tape testing device |
| CN106970107A (en) * | 2016-01-13 | 2017-07-21 | 中国科学院理化技术研究所 | Low temperature infusion pipeline capability test system |
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- 2018-03-29 CN CN201810272857.7A patent/CN108594036B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446609A (en) * | 2008-11-25 | 2009-06-03 | 中国电力科学研究院 | Measurement device of critical current properties of high-temperature superconducting tape |
| CN102496679A (en) * | 2011-11-03 | 2012-06-13 | 上海交通大学 | Liquid nitrogen low-temperature system for superconducting current limiter |
| CN102928332A (en) * | 2012-11-22 | 2013-02-13 | 淮南中科储能科技有限公司 | Dynamic corrosion device of high-temperature liquid medium |
| CN104198803A (en) * | 2014-09-04 | 2014-12-10 | 中国科学院电工研究所 | High-temperature superconducting magnet online monitoring system |
| CN106970107A (en) * | 2016-01-13 | 2017-07-21 | 中国科学院理化技术研究所 | Low temperature infusion pipeline capability test system |
| CN106371043A (en) * | 2016-08-15 | 2017-02-01 | 富通集团有限公司 | Superconducting tape testing device |
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Effective date of registration: 20220810 Address after: 100074, Lane 1, Yungang Tian Town, Beijing, Fengtai District Patentee after: BEIJING INSTITUTE OF AEROSPACE TESTING TECHNOLOGY Address before: 100074, No. 1, Zhong Li, Tian City, Beijing, Fengtai District Patentee before: BEIJING INSTITUTE OF AEROSPACE TESTING TECHNOLOGY Patentee before: BEIJING AEROSPACE RATE MECHANICAL & ELECTRICAL ENGINEERING Co.,Ltd. |
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