CN107725963B - Liquid alkali metal phase change valve - Google Patents
Liquid alkali metal phase change valve Download PDFInfo
- Publication number
- CN107725963B CN107725963B CN201710739968.XA CN201710739968A CN107725963B CN 107725963 B CN107725963 B CN 107725963B CN 201710739968 A CN201710739968 A CN 201710739968A CN 107725963 B CN107725963 B CN 107725963B
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- China
- Prior art keywords
- pipeline
- working medium
- alkali metal
- phase change
- cooling
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- 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.)
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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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
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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
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a liquid alkali metal phase change valve which comprises a working medium pipeline, a cooling liquid pipeline blocking cover and heating devices, wherein the working medium pipeline and the cooling pipeline are in an internal and external cross layout mode, the working medium pipeline is transversely inserted into the cooling liquid pipeline and is connected with the working medium pipeline through the cooling pipeline blocking cover, the cooling pipeline blocking cover is respectively welded with the working medium pipeline and the cooling pipeline, and a plurality of heating devices are symmetrically arranged on the outer sides of two ends of the working medium pipeline. The phase change valve realizes on-off control of liquid alkali metal working medium supply through the physical phase change characteristics of alkali metal; the structure is simple, the sealing is reliable, and the compatibility with the working medium is good.
Description
Technical Field
The invention relates to the field of spaceflight, in particular to a direct-current cold-wall type engine combustion chamber.
Background
At present, liquid metal working media are required to be used as propellants in electric propulsion systems of some spacecraft, and liquid alkali metal is applied due to the characteristics of easy ionization and high efficiency.
However, due to the high temperature characteristic, the temperature cycle characteristic and the corrosion characteristic of the liquid alkali metal, the common valve cannot be used for flow control of the liquid alkali metal, and the solidification and condensation of the residual propellant easily causes blockage and loss of the valve when the common valve is used, so that a novel control valve needs to be designed.
Disclosure of Invention
The invention provides a liquid alkali metal phase change valve, which is used for realizing the opening of the valve by heating and liquefying alkali metal and the closing of the valve by cooling and solidifying and is used for supplying a flow-controllable electric propulsion system engine of a spacecraft.
The purpose of the invention is realized by the following technical scheme: the liquid alkali metal phase change valve comprises a working medium pipeline, a cooling liquid pipeline blocking cover and heating devices, wherein the working medium pipeline and the cooling pipeline are in an internal and external cross layout mode, the working medium pipeline is transversely inserted into the cooling liquid pipeline and is connected with the working medium pipeline through the cooling pipeline blocking cover, the cooling pipeline blocking cover is welded with the working medium pipeline and the cooling pipeline respectively, and the plurality of heating devices are symmetrically installed on the outer sides of two ends of the working medium pipeline.
Preferably, the valve is suitable for all liquid alkali metals, and on-off control of liquid alkali metal working medium supply is realized through the physical phase change characteristics of the alkali metals.
Preferably, the working fluid pipeline is made of 316 stainless steel so as to ensure the compatibility with alkali metal.
Preferably, the upper end of the cooling liquid pipeline is a cooling liquid inlet, and the lower end of the cooling liquid pipeline is a cooling liquid outlet.
Preferably, the right side of the working medium pipeline is a working medium inlet, and the left side of the working medium pipeline is a working medium outlet.
The phase change valve realizes on-off control of liquid alkali metal working medium supply through the physical phase change characteristics of alkali metal; the structure is simple, the sealing is reliable, and the compatibility with the working medium is good.
Drawings
Fig. 1 is a schematic structural diagram of a liquid alkali metal phase change valve according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1, an embodiment of the present invention provides a liquid alkali metal phase change valve, which includes a working medium pipeline 1, a cooling liquid pipeline 2, a cooling liquid pipeline blocking cover 3 and heating devices 4, wherein the working medium pipeline 1 and the cooling pipeline 2 are in an internal and external cross layout, the working medium pipeline 1 is transversely inserted into the cooling liquid pipeline 2 and is connected with the working medium pipeline 1 through the cooling pipeline blocking cover 3, the cooling pipeline blocking cover 3 is respectively welded with the working medium pipeline 1 and the cooling pipeline 2, and a plurality of heating devices 4 are symmetrically installed on outer sides of two ends of the working medium pipeline 1. The valve is suitable for all liquid alkali metals, on-off control of liquid alkali metal working medium supply is realized through the physical phase change characteristics of the alkali metals, and the working medium pipeline 1 is made of 316 stainless steel to ensure the compatibility with the alkali metals.
The specific implementation completes the assembly through the following steps:
1. the working medium pipeline 1 is inserted into the cooling liquid pipeline 2;
2. the cooling liquid pipeline blocking cover 3 is respectively welded to the working medium pipeline 1 and the cooling liquid pipeline 2;
3. the heating device 4 is arranged on the working medium pipeline 1;
so far, the assembly of the whole phase change valve is realized.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (2)
1. A liquid alkali metal phase change valve is characterized by comprising a working medium pipeline, a cooling liquid pipeline blocking cover and heating devices, wherein the working medium pipeline and the cooling pipeline are in an internal and external cross layout mode;
the upper end of the cooling liquid pipeline is a cooling liquid inlet, and the lower end of the cooling liquid pipeline is a cooling liquid outlet;
the right side of the working medium pipeline is a working medium inlet, and the left side of the working medium pipeline is a working medium outlet;
the valve is suitable for all liquid alkali metals, and on-off control of liquid alkali metal working medium supply is realized through the physical phase change characteristics of the alkali metals.
2. A liquid alkali metal phase change valve as claimed in claim 1 wherein the working fluid line is made of 316 stainless steel to ensure compatibility with alkali metals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710739968.XA CN107725963B (en) | 2017-08-23 | 2017-08-23 | Liquid alkali metal phase change valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710739968.XA CN107725963B (en) | 2017-08-23 | 2017-08-23 | Liquid alkali metal phase change valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107725963A CN107725963A (en) | 2018-02-23 |
| CN107725963B true CN107725963B (en) | 2020-04-24 |
Family
ID=61205125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710739968.XA Active CN107725963B (en) | 2017-08-23 | 2017-08-23 | Liquid alkali metal phase change valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107725963B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000074257A (en) * | 1998-08-26 | 2000-03-14 | Ishikawa Seisakusho Ltd | Pressure excessive response preventing device |
| CN2573836Y (en) * | 2001-02-23 | 2003-09-17 | 臧宝华 | Heat-storage insulation band |
| CN201687994U (en) * | 2010-04-08 | 2010-12-29 | 无锡职业技术学院 | Novel industrial high-temperature liquid-sealed valve |
| CN104913153A (en) * | 2015-06-18 | 2015-09-16 | 湖南科技大学 | Phase change energy storage insulation pipeline |
| CN205315780U (en) * | 2015-11-16 | 2016-06-15 | 中国科学院理化技术研究所 | Phase change valve device |
-
2017
- 2017-08-23 CN CN201710739968.XA patent/CN107725963B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000074257A (en) * | 1998-08-26 | 2000-03-14 | Ishikawa Seisakusho Ltd | Pressure excessive response preventing device |
| CN2573836Y (en) * | 2001-02-23 | 2003-09-17 | 臧宝华 | Heat-storage insulation band |
| CN201687994U (en) * | 2010-04-08 | 2010-12-29 | 无锡职业技术学院 | Novel industrial high-temperature liquid-sealed valve |
| CN104913153A (en) * | 2015-06-18 | 2015-09-16 | 湖南科技大学 | Phase change energy storage insulation pipeline |
| CN205315780U (en) * | 2015-11-16 | 2016-06-15 | 中国科学院理化技术研究所 | Phase change valve device |
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| Publication number | Publication date |
|---|---|
| CN107725963A (en) | 2018-02-23 |
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| CB03 | Change of inventor or designer information |
Inventor after: Xiao Kaiyang Inventor after: Wu Tianyu Inventor after: Ren Hao Inventor after: Wang Zhongyuan Inventor after: Ma Danhua Inventor after: Sun Jianchao Inventor after: Zhu Yunsheng Inventor before: Xiao Kaiyang Inventor before: Zhu Yunsheng Inventor before: Ren Hao Inventor before: Wang Zhongyuan Inventor before: Ma Danhua Inventor before: Sun Jianchao Inventor before: Wu Tianyu |