CN110696843A - Pipeline section with cooling and leakage detecting functions applied to low-vacuum magnetic levitation system - Google Patents
Pipeline section with cooling and leakage detecting functions applied to low-vacuum magnetic levitation system Download PDFInfo
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- CN110696843A CN110696843A CN201911077403.5A CN201911077403A CN110696843A CN 110696843 A CN110696843 A CN 110696843A CN 201911077403 A CN201911077403 A CN 201911077403A CN 110696843 A CN110696843 A CN 110696843A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B13/00—Other railway systems
- B61B13/10—Tunnel systems
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Abstract
The invention discloses a pipeline section with cooling and leakage detecting functions, which is applied to a low-vacuum magnetic suspension system, and comprises a vacuum pipeline laid in the magnetic suspension system, wherein the vacuum pipeline consists of a plurality of vacuum pipeline sections; the vacuum pipeline is a double-layer pipeline and comprises a vacuum pipeline inner wall and a vacuum pipeline outer wall; a cooling pipeline and an intermediate interlayer are laid between the inner wall of the vacuum pipeline and the outer wall of the vacuum pipeline; the end of the cooling pipeline penetrates through the outer wall of the vacuum pipeline and is connected with an external cooling pipeline in a sealing mode. The cooling pipeline is arranged in the interlayer between the inner wall and the outer wall of the pipeline, so that the waste heat in the pipeline is removed through cold water, and the direct radiation cooling of high-temperature equipment parts is realized. In addition, a pressure probe is arranged between the inner wall and the outer wall of each pipeline section, and the pipeline section with leakage can be judged by analyzing the pressure value in the interlayer, so that the leakage difficulty in the operation process of the low-vacuum magnetic suspension track system is reduced. The device is widely applied to low-vacuum magnetic levitation track traffic engineering systems, and has wide application and industrialization prospects.
Description
Technical Field
The invention relates to a cooling system of rail transit; in particular to a pipeline section with cooling and leakage detecting functions applied to a low-vacuum magnetic levitation system.
Background
Along with the development of cities, the living standard of people is continuously improved, the aging demand on traveling is continuously improved, and the speed requirement on vehicles is continuously improved. Therefore, the ultra-high speed low vacuum magnetic suspension rail transit system is produced. The higher the speed, the greater the aerodynamic drag and the greater the amount of waste heat generated. In the operation process of the magnetic suspension track traffic system, the train operates in the vacuum pipeline, heat emitted by the train and other equipment is gathered in the pipeline, and the temperature is gradually increased. In order to avoid the influence of overhigh temperature on the stability of train operation, the normal operation of equipment in a vacuum pipeline and the stability of a vacuum pipeline structure, cooling devices are required to be arranged at proper intervals according to the heat dissipation capacity of the train and the equipment so as to remove waste heat. However, in a low vacuum environment, the efficiency of the conventional cooling system is seriously reduced by a heat exchange mode mainly based on convection heat exchange. In addition, the traditional cooling device needs to occupy a large installation space, the traditional cooling device is difficult to set, the local part of the pipeline needs to be expanded, the construction difficulty is high, and the construction cost is high.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a low-vacuum magnetic suspension system cooling system which has a good waste heat cooling effect in a pipeline and is convenient for searching a vacuum leakage position.
The invention adopts the technical scheme that a pipeline section with cooling and leakage detecting functions, which is applied to a low-vacuum magnetic suspension system, comprises a vacuum pipeline laid in the magnetic suspension system, wherein the vacuum pipeline consists of a plurality of vacuum pipeline sections; the vacuum pipeline is a double-layer pipeline and comprises a vacuum pipeline inner wall and a vacuum pipeline outer wall; a cooling pipeline and an intermediate interlayer are laid between the inner wall of the vacuum pipeline and the outer wall of the vacuum pipeline; the end of the cooling pipeline penetrates through the outer wall of the vacuum pipeline and is connected with an external cooling pipeline in a sealing mode.
The cooling pipeline is attached to the inner wall of the vacuum pipeline.
And a silicone grease heat conduction layer is coated between the cooling pipeline and the inner wall of the vacuum tube.
And a pressure probe is arranged in the interlayer of the vacuum pipeline section and is fixed on the outer wall of the vacuum pipeline.
The invention has the advantages that because the cooling pipeline is arranged in the interlayer between the inner wall and the outer wall of the pipeline, the waste heat in the pipeline is removed through cold water, and the direct radiation cooling effect of high-temperature equipment components is realized. In addition, a pressure probe is arranged between the inner wall and the outer wall of each pipeline section, the pressure in the interlayer is controlled between the atmospheric pressure and the pressure in the pipeline during manufacturing, the pipeline section with leakage can be judged by analyzing the pressure value in the interlayer in the operation process, the difficulty of leakage detection in the operation process of the low-vacuum magnetic levitation track traffic system is reduced, and a large amount of labor cost is saved. The device can be widely applied to low-vacuum magnetic levitation track traffic engineering systems, and has wide application prospect and industrialization prospect.
Drawings
FIG. 1 is a schematic perspective view of a piping segment of the low vacuum magnetic levitation system of the present invention;
FIG. 2 is a schematic longitudinal section of a piping section of the low vacuum magnetic levitation system of the present invention;
FIG. 3 is a cross-sectional view of a piping segment of the low vacuum magnetic levitation system of the present invention.
In the figure:
1. vacuum pipe inner wall 2, heat conduction layer 3, cooling pipe 4 and intermediate interlayer
5. The outer wall 6 of the vacuum pipeline and the pressure probe.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
as shown in fig. 1 to fig. 3, the pipeline segment with cooling and leakage detecting functions applied to the low vacuum magnetic levitation system of the present invention comprises a vacuum pipeline laid in the magnetic levitation system, wherein the vacuum pipeline is composed of a plurality of vacuum pipeline segments; the vacuum pipeline is a double-layer pipeline and comprises a vacuum pipeline inner wall 1 and a vacuum pipeline outer wall 5; a cooling pipeline 3 and an intermediate interlayer 4 are laid between the inner wall 1 of the vacuum pipeline and the outer wall 5 of the vacuum pipeline, the cooling pipeline 3 is attached to the inner wall 1 of the vacuum pipeline, and heat in the pipeline is discharged through cold water by the cooling pipeline 3; the coating has silicone grease heat-conducting layer 2 between cooling tube 3 and vacuum tube inner wall 1, and silicone grease heat-conducting layer 2 can increase heat transfer area, reinforcing heat conduction effect, and vacuum tube outer wall 5 and external cooling pipeline sealing connection are passed to the end of cooling tube 3, avoid vacuum tube internal pressure to leak.
In order to maintain a low vacuum environment, the pressure in the pipeline needs to be detected and the leakage is detected, but the pipeline of the magnetic suspension rail transit system is longer, the difficulty of the leakage detection work is higher, the pressure probe 6 is arranged between the inner wall and the outer wall of each vacuum pipeline section, namely the middle interlayer 4, the pressure probe 6 is fixed on the outer wall of the vacuum pipeline, and the position of the leakage pipeline section can be found out and repaired by analyzing the pressure of the middle interlayer. Particularly, when the pipeline is manufactured, the pressure in the interlayer is controlled between the atmospheric pressure and the pressure in the pipeline, the pipeline section with leakage can be judged by analyzing the pressure value in the interlayer in the operation process, and under the normal condition, the pressure in the interlayer in the middle is kept within the threshold value between the atmospheric pressure and the low-vacuum environmental pressure in the pipeline; if the monitoring pressure of a certain pipe section is reduced in operation, the inner wall of the pipe is leaked; if the pressure rises, the outer wall of the tube leaks. In the installation, pass through flange joint and make sealedly with every pipeline section, change and maintenance in the later stage pipeline section of being convenient for maintains reduce a large amount of costs of labor.
The invention provides a pipeline section with cooling and leakage detecting functions, which is applied to a low-vacuum magnetic suspension system, and the problem of large occupied space of the traditional cooling device is solved by arranging a cooling pipeline in a pipeline interlayer to remove waste heat in the pipeline; through set up pressure probe between every pipeline section inside and outside wall, solved the great problem of the work degree of difficulty of traditional leak hunting. The method can be widely applied to low-vacuum magnetic levitation track traffic engineering systems, and has wide application prospect and industrialization prospect.
It should be noted that the protection scope of the present invention is not limited to the above specific examples, and the object of the present invention can be achieved by substantially the same structure according to the basic technical concept of the present invention, and embodiments that can be imagined by those skilled in the art without creative efforts belong to the protection scope of the present invention.
Claims (4)
1. A pipeline section with cooling and leakage detecting functions applied to a low-vacuum magnetic suspension system comprises a vacuum pipeline laid in the magnetic suspension system, wherein the vacuum pipeline consists of a plurality of vacuum pipeline sections; the vacuum pipeline is a double-layer pipeline and comprises a vacuum pipeline inner wall (1) and a vacuum pipeline outer wall (5); a cooling pipeline (3) and an intermediate interlayer (4) are laid between the inner wall (1) and the outer wall (5) of the vacuum pipeline; the end of the cooling pipeline (3) penetrates through the outer wall (5) of the vacuum pipeline and is connected with an external cooling pipeline in a sealing mode.
2. The pipeline section with cooling and leakage detecting functions applied to the low-vacuum magnetic levitation system according to claim 1, wherein the cooling pipeline (3) is attached to the inner wall (1) of the vacuum pipeline.
3. The pipe section with cooling and leakage detection functions applied to the low-vacuum magnetic levitation system as recited in claim 1, characterized in that a silicone heat conducting layer (2) is coated between the cooling pipe (3) and the inner wall (1) of the vacuum tube.
4. The pipeline section with the cooling and leakage detecting functions applied to the low-vacuum magnetic levitation system according to claim 1, wherein a pressure probe (6) is installed in the interlayer (4) of the vacuum pipeline section, and the pressure probe (6) is fixed on the outer wall of the vacuum pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911077403.5A CN110696843A (en) | 2019-11-06 | 2019-11-06 | Pipeline section with cooling and leakage detecting functions applied to low-vacuum magnetic levitation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911077403.5A CN110696843A (en) | 2019-11-06 | 2019-11-06 | Pipeline section with cooling and leakage detecting functions applied to low-vacuum magnetic levitation system |
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| Publication Number | Publication Date |
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| CN110696843A true CN110696843A (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911077403.5A Pending CN110696843A (en) | 2019-11-06 | 2019-11-06 | Pipeline section with cooling and leakage detecting functions applied to low-vacuum magnetic levitation system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111409650A (en) * | 2020-03-05 | 2020-07-14 | 合肥通用机械研究院有限公司 | Low vacuum pipeline train wind circulation cooling system along line |
| CN111811737A (en) * | 2020-06-28 | 2020-10-23 | 盾构及掘进技术国家重点实验室 | Method for manufacturing experimental operation pipeline for low-vacuum magnetic suspension transportation |
| WO2021175140A1 (en) * | 2020-03-05 | 2021-09-10 | 合肥通用机械研究院有限公司 | Low-vacuum pipeline heat dissipation system for high-speed train |
| CN113701683A (en) * | 2021-08-06 | 2021-11-26 | 珠海恒基达鑫国际化工仓储股份有限公司 | Wall thickness detection system, method and storage medium |
| CN114518005A (en) * | 2020-11-19 | 2022-05-20 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Pipeline wall sleeve type cooling circulation heat dissipation method |
| CN114521029A (en) * | 2020-11-19 | 2022-05-20 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Pipeline interval type heat dissipation system and magnetic suspension transportation system with same |
| CN114518006A (en) * | 2020-11-19 | 2022-05-20 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Pipeline wall sleeve type cooling circulation heat dissipation system and magnetic suspension transportation system |
| CN115027510A (en) * | 2022-07-13 | 2022-09-09 | 中铁第四勘察设计院集团有限公司 | Low vacuum pipeline structure with temperature keeping function |
| CN115265250A (en) * | 2022-07-13 | 2022-11-01 | 中铁第四勘察设计院集团有限公司 | Natural heat exchange system suitable for low vacuum pipeline |
-
2019
- 2019-11-06 CN CN201911077403.5A patent/CN110696843A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111409650A (en) * | 2020-03-05 | 2020-07-14 | 合肥通用机械研究院有限公司 | Low vacuum pipeline train wind circulation cooling system along line |
| WO2021175140A1 (en) * | 2020-03-05 | 2021-09-10 | 合肥通用机械研究院有限公司 | Low-vacuum pipeline heat dissipation system for high-speed train |
| US11999387B2 (en) | 2020-03-05 | 2024-06-04 | Hefei General Machinery Research Institute Co., Ltd | Heat dissipation system for high-speed train running in low-vacuum tube |
| CN111811737A (en) * | 2020-06-28 | 2020-10-23 | 盾构及掘进技术国家重点实验室 | Method for manufacturing experimental operation pipeline for low-vacuum magnetic suspension transportation |
| CN114518005A (en) * | 2020-11-19 | 2022-05-20 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Pipeline wall sleeve type cooling circulation heat dissipation method |
| CN114521029A (en) * | 2020-11-19 | 2022-05-20 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Pipeline interval type heat dissipation system and magnetic suspension transportation system with same |
| CN114518006A (en) * | 2020-11-19 | 2022-05-20 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Pipeline wall sleeve type cooling circulation heat dissipation system and magnetic suspension transportation system |
| CN113701683A (en) * | 2021-08-06 | 2021-11-26 | 珠海恒基达鑫国际化工仓储股份有限公司 | Wall thickness detection system, method and storage medium |
| CN115027510A (en) * | 2022-07-13 | 2022-09-09 | 中铁第四勘察设计院集团有限公司 | Low vacuum pipeline structure with temperature keeping function |
| CN115265250A (en) * | 2022-07-13 | 2022-11-01 | 中铁第四勘察设计院集团有限公司 | Natural heat exchange system suitable for low vacuum pipeline |
| CN115027510B (en) * | 2022-07-13 | 2023-07-04 | 中铁第四勘察设计院集团有限公司 | Low vacuum pipeline structure with temperature keeping function |
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