CN111486729B - High-temperature alkali metal heat pipe cold filling system and method - Google Patents
High-temperature alkali metal heat pipe cold filling system and method Download PDFInfo
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- CN111486729B CN111486729B CN202010327933.7A CN202010327933A CN111486729B CN 111486729 B CN111486729 B CN 111486729B CN 202010327933 A CN202010327933 A CN 202010327933A CN 111486729 B CN111486729 B CN 111486729B
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- heat pipe
- alkali metal
- glove box
- pipe shell
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0283—Means for filling or sealing heat pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
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- Life Sciences & Earth Sciences (AREA)
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- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a high-temperature alkali metal heat pipe cold filling system and a method, which comprises an alkali metal shredding device, a sealed glove box, an exhaust box, a hydraulic clamping device, a purifying device, an argon gas cylinder, a vacuum molecular pump, a gas valve and other components; the high-temperature alkali metal heat pipe cold filling loop system and the method can realize the functions of heat pipe cold filling and non-condensable gas discharging of the high-temperature alkali metal working medium; the invention provides a general method suitable for cold filling of a high-temperature sodium heat pipe, a potassium heat pipe, a sodium-potassium heat pipe and a lithium heat pipe.
Description
Technical Field
The invention relates to the technical field of heat pipe design and manufacture, in particular to a cold filling system and method for a high-temperature alkali metal heat pipe.
Background
The high-temperature alkali metal heat pipe is an advanced passive heat exchanger based on liquid alkali metal phase change heat exchange, and has the characteristics of high isothermal property, high heat transfer efficiency, high reliability and the like. The high-temperature alkali metal heat pipe has wide application prospect in a space nuclear reactor due to excellent heat transfer characteristic, good safety and reliability and passive heat transfer characteristic. The filling technology of the high-temperature alkali metal heat pipe is a key ring in the manufacturing process of the high-temperature alkali metal heat pipe. Purity of alkali metal: (>99%), degree of vacuum (10%)-4<) The filling amount and the filling technology have obvious influence on the heat transfer performance of the heat pipe. At present, the manufacturing process of the high-temperature alkali metal heat pipe with high heat transfer power and high isothermal property is not mature enough.
In conclusion, no relevant prior art is reported or disclosed in the research aiming at the simple and feasible cold filling method of the high-temperature alkali metal heat pipe.
Disclosure of Invention
In order to avoid the defects of the prior art, the invention provides the cold filling system and the cold filling method for the high-temperature alkali metal heat pipe, which meet the research and development and manufacturing requirements of the high-temperature alkali metal heat pipe with high heat transfer power and high isothermal property and have the advantages of simplicity, feasibility, safety, reliability, accuracy and high efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-temperature alkali metal heat pipe cold filling system comprises a sealing glove box 1 protected by filling argon, wherein one end of the sealing glove box 1 is connected with an argon gas cylinder 2 through a pipeline, a first gas valve 3 is positioned on the connecting pipeline and used for controlling the entry of the argon gas, and the other end of the sealing glove box 1 is connected with a vacuum pump 4 for exhausting air; the prefabricated heat pipe shell 5 is connected with an alkali metal storage tank 6 and an alkali metal shredding device 7, the heat pipe shell 5 and the alkali metal shredding device are both positioned in a sealed glove box 1 filled with argon for protection, and the alkali metal is canned in the heat pipe shell 5; the heat pipe shell 5 filled with the alkali metal is taken out of the sealed glove box 1, one end of the heat pipe shell 5 is wrapped by an electric heating wire 8 and placed in an exhaust box 9, a hydraulic clamping and breaking device 10 for heat pipe packaging is placed at an outlet of the heat pipe shell 5, the outlet of the heat pipe shell 5 is divided into two paths and is respectively connected with a purifying device 11 and a second gas valve 12 through pipelines, the purifying device 11 and the second gas valve 12 are used for removing alkali metal steam, and the second gas valve 12 is connected with a vacuum molecular pump 13 for gas vacuumizing, a vacuum gauge 14 for vacuum degree display and a filter 15 for preventing alkali metal fragments from entering the vacuum molecular pump 13 through pipelines.
The liquid alkali metal in the alkali metal storage tank 6 is prevented from being oxidized by the form of an oil seal; the alkali metal in the alkali metal filament cutter 7 is protected from oxidation by the argon gas in the argon gas cylinder 2.
The heat pipe shell 5 is arranged in the sealed glove box 1 and the exhaust box 9, and the alkali metal working medium is prevented from flowing out in the canning and exhaust processes.
The alkali metal can is vacuum pumped and hot exhausted after being packed in the heat pipe shell 5.
According to the experimental method of the high-temperature alkali metal heat pipe cold filling system, before filling is started, the first gas valve 3 is closed, the sealed glove box 1 is vacuumized by the vacuum pump 4, and air in the sealed glove box 1 is exhausted; then opening a first gas valve 3 to fill argon into the sealed glove box 1, sending solid alkali metal in the alkali metal storage tank 6 into an alkali metal shredding device 7 through manual operation after the sealed glove box 1 is filled with argon for protection, and then filling the solid alkali metal into a heat pipe shell 5; after alkali metal is filled into the heat pipe shell 5, the heat pipe shell 5 is taken out of the sealed glove box 1, the lower end of the heat pipe shell 5 is wound with the electric heating wire 8 and then is put into the exhaust box 9, the second gas valve 12 is opened firstly, the vacuum molecular pump 13 is opened, after the reading of the vacuum gauge 14 reaches the preset vacuum degree, the second gas valve 12 is closed, the heat pipe shell 7 is heated through the electric heating wire 8, after the alkali metal is melted, the alkali metal steam carries the non-condensable gas to enter the purifying device 11, after the exhaust is completed, the hydraulic pressure clamping device 10 is used for carrying out hydraulic sealing on the outlet of the heat pipe shell 5, and the packaging and manufacturing of the high-temperature alkali metal heat pipe are completed.
The cold filling of the high-temperature sodium heat pipe, the potassium heat pipe, the sodium-potassium heat pipe and the lithium heat pipe can be realized.
The cold filling of the high-temperature sodium heat pipe, the potassium heat pipe, the sodium-potassium heat pipe and the lithium heat pipe can be realized.
Compared with the prior art, the invention has the following advantages:
1) the invention aims to provide a high-temperature alkali metal heat pipe cold filling system and a high-temperature alkali metal heat pipe cold filling method aiming at the research, development and manufacturing requirements of a heat pipe with high heat transfer power.
2) The invention provides a universal cold filling method for filling high-temperature sodium heat pipes, high-temperature potassium heat pipes, high-temperature sodium potassium heat pipes and high-temperature lithium heat pipes, which can realize batch filling of high-temperature alkali metal heat pipes.
Drawings
FIG. 1 is a schematic diagram of a cold filling system for high-temperature alkali metal heat pipes according to the present invention.
Detailed Description
The invention is further described with reference to the following examples and figures:
as shown in fig. 1, the invention provides a high-temperature alkali metal heat pipe cold-state filling system, which comprises a sealing glove box 1 filled with argon for protection, wherein one end of the sealing glove box 1 is connected with an argon gas cylinder 2 through a pipeline, a first gas valve 3 is positioned on the connecting pipeline and used for controlling the entry of argon gas, and the other end of the sealing glove box 1 is connected with a vacuum pump 4 for exhausting air; the prefabricated heat pipe shell 5 is connected with an alkali metal storage tank 6 and an alkali metal shredding device 7, the heat pipe shell 5 and the alkali metal shredding device are both positioned in a sealed glove box 1 filled with argon for protection, and the alkali metal is canned in the heat pipe shell 5; the heat pipe shell 5 filled with the alkali metal is taken out of the sealed glove box 1, one end of the heat pipe shell 5 is wrapped by an electric heating wire 8 and placed in an exhaust box 9, a hydraulic clamping and breaking device 10 for heat pipe packaging is placed at an outlet of the heat pipe shell 5, the outlet of the heat pipe shell 5 is divided into two paths and is respectively connected with a purifying device 11 and a second gas valve 12 through pipelines, the purifying device 11 and the second gas valve 12 are used for removing alkali metal steam, and the second gas valve 12 is connected with a vacuum molecular pump 13 for gas vacuumizing, a vacuum gauge 14 for vacuum degree display and a filter 15 for preventing alkali metal fragments from entering the vacuum molecular pump 13 through pipelines.
As a preferred embodiment of the present invention, the liquid alkali metal in the alkali metal reservoir 6 is protected from oxidation by the form of an oil seal; the alkali metal in the alkali metal filament cutter 7 is protected from oxidation by the argon gas in the argon gas cylinder 2.
The heat pipe shell 5 is arranged in the sealed glove box 1 and the exhaust box 9, and the alkali metal working medium is prevented from flowing out in the canning and exhaust processes.
The alkali metal can is vacuum pumped and hot exhausted after being packed in the heat pipe shell 5.
The invention relates to an experimental method of a high-temperature alkali metal heat pipe cold filling system, which comprises the steps of closing a first gas valve 3 before filling, vacuumizing a sealed glove box 1 by using a vacuum pump 4, and exhausting air in the sealed glove box 1; then opening a first gas valve 3 to fill argon into the sealed glove box 1, sending solid alkali metal in the alkali metal storage tank 6 into an alkali metal shredding device 7 through manual operation after the sealed glove box 1 is filled with argon for protection, and then filling the solid alkali metal into a heat pipe shell 5; after alkali metal is filled into the heat pipe shell 5, the heat pipe shell 5 is taken out of the sealed glove box 1, the lower end of the heat pipe shell 5 is wound with the electric heating wire 8 and then is put into the exhaust box 9, the second gas valve 12 is opened firstly, the vacuum molecular pump 13 is opened, after the reading of the vacuum gauge 14 reaches the preset vacuum degree, the second gas valve 12 is closed, the heat pipe shell 7 is heated through the electric heating wire 8, after the alkali metal is melted, the alkali metal steam carries the non-condensable gas to enter the purifying device 11, after the exhaust is completed, the hydraulic pressure clamping device 10 is used for carrying out hydraulic sealing on the outlet of the heat pipe shell 5, and the packaging and manufacturing of the high-temperature alkali metal heat pipe are completed.
The method can realize the cold filling of the high-temperature sodium heat pipe, the potassium heat pipe, the sodium-potassium heat pipe and the lithium heat pipe.
Claims (6)
1. The utility model provides a high temperature alkali metal heat pipe cold filling system which characterized in that: the device comprises a sealing glove box (1) filled with argon for protection, wherein one end of the sealing glove box (1) is connected with an argon gas cylinder (2) through a pipeline, a first gas valve (3) is positioned on the connecting pipeline and used for controlling the entry of argon gas, and the other end of the sealing glove box (1) is connected with a vacuum pump (4) for exhausting air; the prefabricated heat pipe shell (5) is connected with an alkali metal storage tank (6) and an alkali metal shredding device (7) and is positioned in a sealed glove box (1) filled with argon for protection, and the heat pipe shell (5) is filled with alkali metal; the heat pipe shell (5) filled with the alkali metal is taken out of the sealed glove box (1), one end of the heat pipe shell (5) is wrapped by an electric heating wire (8) and placed in an exhaust box (9) used for exhausting non-condensable gas, a hydraulic clamping device (10) used for packaging the heat pipe is placed at the outlet of the heat pipe shell (5), the outlet of the heat pipe shell (5) is divided into two paths and is respectively connected with a purifying device (11) and a second gas valve (12) through pipelines, the purifying device is used for removing alkali metal steam, and the second gas valve (12) is connected with a vacuum molecular pump (13) for vacuumizing gas, a vacuum gauge (14) for displaying vacuum degree and a filter (15) for preventing alkali metal debris from entering the vacuum molecular pump (13).
2. The cold filling system of a high temperature alkali metal heat pipe according to claim 1, wherein: the liquid alkali metal in the alkali metal storage tank (6) is prevented from being oxidized in an oil seal mode; the alkali metal in the alkali metal shredding device (7) is protected from oxidation by argon in the argon cylinder (2).
3. The cold filling system of a high temperature alkali metal heat pipe according to claim 1, wherein: the heat pipe shell (5) is arranged in the sealed glove box (1) and the exhaust box (9) to prevent the alkali metal working medium from flowing out in the filling and exhaust processes.
4. The cold filling system of a high temperature alkali metal heat pipe according to claim 1, wherein: the alkali metal is filled into the heat pipe shell (5) and then vacuumized and thermally exhausted.
5. A cold filling method of a high-temperature alkali metal heat pipe, which is the filling method of the cold filling system of the high-temperature alkali metal heat pipe in any one of claims 1 to 4, and is characterized in that: before filling, closing the first gas valve (3), vacuumizing the sealed glove box (1) by using a vacuum pump (4), and exhausting air in the sealed glove box (1); then opening a first gas valve (3) to fill argon into the sealed glove box (1), after the sealed glove box (1) is filled with argon for protection, feeding solid alkali metal in an alkali metal storage tank (6) into an alkali metal shredding device (7) through manual operation to shred, and then filling the solid alkali metal into a heat pipe shell (5); after alkali metal is filled into the heat pipe shell (5), the heat pipe shell (5) is taken out from the sealed glove box (1), the lower end of the heat pipe shell (5) is wound with the electric heating wire (8) and is placed into the exhaust box (9), the second gas valve (12) is opened firstly, the vacuum molecular pump (13) is opened again, after the reading of the vacuum gauge (14) reaches the preset vacuum degree, the second gas valve (12) is closed, the heat pipe shell (5) is heated through the electric heating wire (8), after the alkali metal melts, the alkali metal steam carries non-condensable gas to enter the purifying device (11), after the exhaust is completed, the hydraulic pressure clamping and breaking device (10) is used for carrying out hydraulic sealing on the outlet of the heat pipe shell (5), and the packaging and manufacturing of the high-temperature alkali metal heat pipe are completed.
6. The filling method according to claim 5, wherein: the cold filling of the high-temperature sodium heat pipe, the potassium heat pipe, the sodium-potassium heat pipe and the lithium heat pipe can be realized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010327933.7A CN111486729B (en) | 2020-04-23 | 2020-04-23 | High-temperature alkali metal heat pipe cold filling system and method |
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| CN202010327933.7A CN111486729B (en) | 2020-04-23 | 2020-04-23 | High-temperature alkali metal heat pipe cold filling system and method |
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| CN111486729B true CN111486729B (en) | 2021-04-27 |
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| CN113432465B (en) * | 2021-06-21 | 2022-08-05 | 西安交通大学 | High-temperature heat pipe working medium purifying and filling device and method |
| CN114396817B (en) * | 2022-01-07 | 2023-08-15 | 西安交通大学 | Liquid metal heat pipe packaging device and method |
| CN114719642B (en) * | 2022-05-20 | 2023-07-04 | 西安交通大学 | High-temperature sodium heat pipe filling device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101995181B (en) * | 2009-08-28 | 2012-11-28 | 中国科学院工程热物理研究所 | Quantitative filling equipment and method for solid alkali metal working medium |
| CN102338580A (en) * | 2010-07-15 | 2012-02-01 | 鸿富锦精密工业（深圳）有限公司 | Heat pipe processing method |
| CN102735084A (en) * | 2011-04-08 | 2012-10-17 | 中国科学院工程热物理研究所 | Accurate filling equipment and method for high temperature heat pipe requiring small amount of alkali metal working medium |
| CN104075600B (en) * | 2014-06-30 | 2016-04-13 | 中国航天空气动力技术研究院 | The solid-state working medium filling equipment of a kind of pair of process interface heat pipe and methods for filling |
| CN105115328A (en) * | 2015-08-10 | 2015-12-02 | 中国航天空气动力技术研究院 | Filling method for low-melting-point alkali metal working mediums |
| US10168104B2 (en) * | 2016-06-24 | 2019-01-01 | Tamkang University | Filling pipe for use in high-temperature heat pipe filling operation |
| CN107436106B (en) * | 2017-09-12 | 2023-05-05 | 大连海事大学 | Liquid filling device and method for liquid metal high-temperature pulsating heat pipe |
| CN109141086A (en) * | 2018-08-31 | 2019-01-04 | 中国航天空气动力技术研究院 | A kind of methods for filling of high-temperature heat pipe working medium |
| CN109237974A (en) * | 2018-09-08 | 2019-01-18 | 吴联凯 | A kind of branch pipe type sodium heat pipe producing device and production method |
| CN110243212B (en) * | 2019-05-31 | 2020-05-15 | 西安交通大学 | High-temperature alkali metal heat pipe hot-state filling loop system and method |
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