CN113444894A - Liquid alkali metal feeding device and method in vacuum environment - Google Patents
Liquid alkali metal feeding device and method in vacuum environment Download PDFInfo
- Publication number
- CN113444894A CN113444894A CN202010231913.XA CN202010231913A CN113444894A CN 113444894 A CN113444894 A CN 113444894A CN 202010231913 A CN202010231913 A CN 202010231913A CN 113444894 A CN113444894 A CN 113444894A
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- Prior art keywords
- crucible
- temperature control
- alkali metal
- pipe
- feeding
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Links
- 229910052783 alkali metal Inorganic materials 0.000 title claims abstract description 61
- 150000001340 alkali metals Chemical class 0.000 title claims abstract description 61
- 239000007788 liquid Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000001704 evaporation Methods 0.000 claims abstract description 43
- 230000008020 evaporation Effects 0.000 claims abstract description 40
- 238000002347 injection Methods 0.000 claims abstract description 35
- 239000007924 injection Substances 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims description 26
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 4
- 230000005674 electromagnetic induction Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000001883 metal evaporation Methods 0.000 abstract description 3
- 239000011344 liquid material Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 15
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/10—Obtaining alkali metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/006—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with use of an inert protective material including the use of an inert gas
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/04—Refining by applying a vacuum
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a liquid alkali metal feeding device and a liquid alkali metal feeding method in a vacuum environment, wherein the feeding device comprises a shell, a temperature control feeding crucible and an evaporation crucible, wherein an evaporation chamber is formed inside the shell, and the temperature control feeding crucible and the evaporation crucible are arranged in the evaporation chamber, wherein: the shell is provided with a material injection air pressure control interface, the top opening of the temperature control feeding crucible is communicated with the material injection air pressure control interface through a connecting pipe, the material injection air pressure control interface is detachably and hermetically connected with a T-shaped pipe, one port of the T-shaped pipe is fixedly provided with an air pressure gauge, and the other port of the T-shaped pipe forms a connecting port to selectively communicate a vacuumizing maintaining system and a buffer gas distribution system; the bottom outlet of the temperature control feeding crucible is connected with a temperature control dripping pipe, and the top opening of the evaporation crucible is positioned under the temperature control dripping pipe. The invention can supply liquid material to the alkali metal evaporation device, and provides the continuity and stability of alkali metal vapor supply.
Description
Technical Field
The invention relates to the technical field of alkali metal feeding, in particular to a liquid alkali metal feeding device and a liquid alkali metal feeding method in a vacuum environment.
Background
In the experiment, alkali metal needs to be evaporated in a vacuum environment, and under the use condition of continuously evaporating the alkali metal for a long time, the crucible with a limited volume needs to be supplied, the alkali metal needs to be supplied under the vacuum condition, the alkali metal is required to be supplied highly, if cold solid alkali metal is supplied, the evaporation molten pool is influenced, the temperature of the evaporation molten pool fluctuates, and the alkali metal steam can not be stably supplied.
Disclosure of Invention
The invention aims to provide a liquid alkali metal feeding device in a vacuum environment, aiming at the problem that the material supply is unstable when alkali metal solid materials are supplied to an alkali metal evaporation device in the prior art.
Another aspect of the present invention is to provide a method for supplying the liquid alkali metal in the vacuum environment.
The technical scheme adopted for realizing the purpose of the invention is as follows:
a liquid alkali metal feeding device in a vacuum environment comprises a shell, a temperature control feeding crucible and an evaporation crucible, wherein an evaporation chamber is formed inside the shell, and the temperature control feeding crucible and the evaporation crucible are arranged in the evaporation chamber, wherein:
the shell is provided with a material injection air pressure control interface, the top opening of the temperature control feeding crucible is communicated with the material injection air pressure control interface through a connecting pipe, the material injection air pressure control interface is detachably and hermetically connected with a T-shaped pipe, one port of the T-shaped pipe is fixedly provided with an air pressure gauge, and the other port of the T-shaped pipe forms a connecting port to selectively communicate a vacuumizing maintaining system and a buffer gas distribution system;
the bottom outlet of the temperature control feeding crucible is connected with a temperature control dripping pipe, and the top opening of the evaporation crucible is positioned under the temperature control dripping pipe.
In the above technical solution, the housing includes a T-pipe and a straight pipe fixedly connected by a flange structure.
In the above technical solution, the evaporation crucible is located in the T-tube, and one end or both ends of the T-tube form an alkali metal vapor outlet.
In the technical scheme, a connecting flange is fixed on the periphery of the bottom of the material injection air pressure control interface, the connecting flange is fixedly connected with the flange structure at the end part of the straight pipe in a sealing manner, one end of the connecting pipe is welded at the bottom of the material injection air pressure control interface, and the other end of the connecting pipe is welded on the top opening of the temperature control feeding crucible.
In the technical scheme, when the material injection air pressure control interface is assembled on the straight pipe, the temperature control feeding crucible is positioned in the straight pipe, and the bottom of the temperature control dropping flow pipe extends into the vertical section of the T pipe.
In the technical scheme, the top of the material injection air pressure control interface is fixedly connected with one end of the T-shaped pipe through a flange structure.
In the above technical scheme, the temperature control dropping flow pipe comprises a straight pipe and a temperature control assembly fixed on the outer wall of the straight pipe. The temperature control component can adjust the heating temperature of the straight pipe.
In the above technical scheme, the temperature control feeding crucible comprises a crucible body and a heating body fixed on the outer wall of the crucible body. The heating body can adjust the heating temperature of the crucible body.
In the above technical scheme, the temperature control assembly is heated by electromagnetic induction.
In the above technical scheme, the bottom of control by temperature change feed crucible is hopper-shaped structure, just control by temperature change trickle pipe connect in the opening part of hopper-shaped structure bottommost.
In another aspect of the present invention, there is also provided a method for supplying liquid alkali metal in a vacuum environment, comprising the steps of:
when feeding is needed, starting a heating component of the temperature control dropping flow pipe, and feeding liquid alkali metal into the evaporation crucible through the temperature control dropping flow pipe;
when the feeding is stopped, the heating component of the temperature control trickle tube is closed, the liquid alkali metal is solidified in the temperature control trickle tube, and the temperature control trickle tube is blocked;
when the material is needed to be fed again, the heating component of the temperature control trickle tube is started again, the alkali metal in the temperature control trickle tube is continuously melted, and the liquid metal enters the evaporation crucible to be fed continuously.
Compared with the prior art, the invention has the beneficial effects that:
1. the liquid feeding can reduce the influence of cold feeding on the evaporation molten pool, ensure the continuous and stable supply of alkali metal vapor in the evaporation molten pool and provide the stability of the processing technology.
2. Protective gas is introduced into the temperature-control feeding crucible, the dropping speed of the liquid alkali metal can be controlled by adjusting the gas pressure of the protective gas, so that the purpose of controlling the feeding speed is achieved, in addition, under the protection of inert gas, the oxidation of the liquid metal can be reduced, and the unnecessary evaporation of the alkali metal in a vacuum state is reduced.
3. The device has strong universality, and the feeding device can be used as a modular device to be assembled on any processing equipment which needs an alkali metal steam environment.
Drawings
Fig. 1 is a schematic diagram showing the internal structure of the housing and the injection air pressure control interface.
Fig. 2 is an external view of the housing and the injection air pressure control interface.
Fig. 3 is a schematic view of the internal structure of the present invention.
In the figure: 1-material injection air pressure control interface, 2-shell, 3-temperature control feeding crucible, 4-temperature control dropping pipe, 5-evaporation crucible, 6-barometer, 7-connecting port, 8-connecting pipe, 9-T pipe, 10-T pipe and 11-straight pipe.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A liquid alkali metal feeding device in a vacuum environment, comprising a housing 2 inside which an evaporation chamber is formed, and a temperature-controlled feeding crucible 3 and an evaporation crucible 5 which are arranged inside the evaporation chamber, wherein:
a temperature control dropping tube 4 is connected to the bottom outlet of the temperature control feeding crucible 3, and the top of the evaporation crucible 5 is provided with an opening and is positioned right below the temperature control dropping tube 4;
the material injection device is characterized in that a material injection air pressure control interface 1 is arranged on the shell 2, the top opening of the temperature control feeding crucible 3 is communicated with the material injection air pressure control interface 1 through a connecting pipe 8, a T-shaped pipe 9 is detachably and hermetically connected to the material injection air pressure control interface 1, a barometer 6 is fixed on one port of the T-shaped pipe 9, and the other port of the T-shaped pipe 9 forms a connecting port 7 to selectively communicate a vacuumizing maintaining system and a buffer gas distribution system.
The evaporation chamber is a main relatively closed action cavity in the experimental process, and modules such as a temperature control feeding crucible 3, an evaporation crucible 5 and the like are placed in the evaporation chamber. When the device is used, alkali metal in a solid state is placed in the temperature control feeding crucible 3, the alkali metal is heated in the temperature control feeding crucible 3 to form a liquid state, the alkali metal in the liquid state enters the evaporation crucible 5 after passing through the temperature control dropping pipe 4, and the alkali metal vapor is formed in the evaporation crucible 5 through evaporation.
The supply quantity can be controlled by the temperature control dropping flow pipe 4, when the temperature control dropping flow pipe 4 stops heating, the material is solidified in the temperature control dropping flow pipe 4 to block the temperature control dropping flow pipe, and the supply of the liquid alkali metal is stopped.
The supply of the liquid material prevents the evaporation crucible 5 from fluctuating excessively in operating temperature, so that the evaporation crucible 5 forms alkali metal vapor stably.
Example 2
The method for supplying liquid alkali metal in a vacuum environment as in example 1, comprising the steps of:
and step 4, when the feeding is stopped, closing the heating component of the temperature control dropping flow pipe 4, solidifying the liquid alkali metal in the temperature control dropping flow pipe 4, plugging the temperature control dropping flow pipe 4, and when the feeding is needed, opening the heating component of the temperature control dropping flow pipe 4 again. The alkali metal in the temperature-controlled dropping pipe 4 is continuously melted, and the required liquid metal enters the evaporation crucible 5 to be continuously fed.
In the feeding process, the air pressure in the temperature control feeding crucible 3 is adjusted through a buffer gas distribution system, and the dropping speed of the alkali metal can be adjusted.
Example 3
The present embodiment is optimized based on embodiment 1 or embodiment 2, and the housing 2 includes a T-pipe 10 and a straight pipe 11 fixedly connected by a flange structure. Simple structure and convenient assembly.
More preferably, the evaporation crucible 5 is located in the T-tube 10, one or both ends of the T-tube 10 form an alkali metal vapor outlet, and the alkali metal enters the desired environment from both ends of the T-tube 10.
More preferably, a connecting flange is fixed on the periphery of the bottom of the material injection air pressure control interface 1, the connecting flange is fixedly connected with a flange structure at the end part of the straight pipe 11 in a sealing manner, one end of the connecting pipe 8 is welded at the bottom of the material injection air pressure control interface 1, and the other end of the connecting pipe is welded on an opening at the top of the temperature control supply crucible 3.
Furthermore, when the injection air pressure control interface 1 is assembled on the straight pipe 11, the temperature control supply crucible 3 is positioned in the straight pipe 11, and the bottom of the temperature control dropping flow pipe 4 extends into the vertical section of the T pipe 10.
More preferably, the top of the injection air pressure control interface 1 is fixedly connected with one end of the T-shaped pipe 9 through a flange structure.
In order to adjust the heating temperature of the temperature control dropping flow pipe 4 conveniently, the temperature control dropping flow pipe 4 comprises a straight pipe and a temperature control component fixed on the outer wall of the straight pipe. The temperature control component can adjust the heating temperature of the straight pipe.
In order to facilitate the adjustment of the heating temperature of the temperature control supply crucible 3, the temperature control supply crucible 3 comprises a crucible body and a heating body fixed on the outer wall of the crucible body. The heating body can adjust the heating temperature of the crucible body.
In order to facilitate the control of the heating temperature and adapt to the alkali metal evaporation environment, the temperature control component adopts electromagnetic induction heating.
In order to discharge the molten alkali metal from the crucible body completely, the bottom of the temperature-controlled feeding crucible 3 is of a funnel-shaped structure, and the temperature-controlled dropping pipe 4 is connected to the opening at the bottommost end of the funnel-shaped structure.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (11)
1. A liquid alkali metal feeding device in a vacuum environment is characterized by comprising a shell, a temperature control feeding crucible and an evaporation crucible, wherein an evaporation chamber is formed inside the shell, and the temperature control feeding crucible and the evaporation crucible are arranged in the evaporation chamber, wherein:
the shell is provided with a material injection air pressure control interface, the top opening of the temperature control feeding crucible is communicated with the material injection air pressure control interface through a connecting pipe, the material injection air pressure control interface is detachably and hermetically connected with a T-shaped pipe, one port of the T-shaped pipe is fixedly provided with an air pressure gauge, and the other port of the T-shaped pipe forms a connecting port to selectively communicate a vacuumizing maintaining system and a buffer gas distribution system;
the bottom outlet of the temperature control feeding crucible is connected with a temperature control dripping pipe, and the top opening of the evaporation crucible is positioned under the temperature control dripping pipe.
2. A liquid alkali metal supply apparatus in a vacuum environment as claimed in claim 1 wherein said housing includes a T-pipe and a straight pipe fixedly connected by a flange structure.
3. A device for supplying a liquid alkali metal in a vacuum atmosphere as claimed in claim 2, wherein said evaporating crucible is located in said T-pipe, and one or both ends of said T-pipe are formed with an alkali metal vapor outlet.
4. The apparatus for supplying liquid alkali metal under vacuum environment as claimed in claim 2, wherein a connecting flange is fixed to the bottom periphery of the pressure control port, the connecting flange is connected to the flange structure of the end of the straight tube in a sealing and fixed manner, one end of the connecting pipe is welded to the bottom of the pressure control port, and the other end of the connecting pipe is welded to the top opening of the temperature-controlled supply crucible.
5. A liquid alkali metal supply apparatus in a vacuum environment as claimed in claim 2 wherein, when the injection air pressure control port is mounted on the straight tube, the temperature controlled supply crucible is located within the straight tube and the bottom of the temperature controlled trickle tube extends into the vertical section of the T-tube.
6. The apparatus for supplying a liquid alkali metal in a vacuum environment according to claim 1, wherein a top portion of the injection air pressure control port is fixedly connected to one end of the T-shaped pipe by a flange structure.
7. A liquid alkali metal supply apparatus in a vacuum environment as claimed in claim 1, wherein said temperature-controlled trickle tube comprises a straight tube and a temperature-control member fixed to an outer wall of said straight tube.
8. A device for supplying a liquid alkali metal in a vacuum environment as claimed in claim 7, wherein said temperature-controlled supply crucible comprises a crucible body and a heating body fixed to an outer wall of said crucible body.
9. The apparatus of claim 8, wherein the temperature control assembly is heated by electromagnetic induction.
10. The apparatus according to claim 1, wherein the temperature-controlled feeding crucible has a funnel-shaped bottom, and the temperature-controlled dropping pipe is connected to the bottom opening of the funnel-shaped bottom.
11. A method for feeding a liquid alkali metal in a vacuum environment as claimed in any one of claims 1 to 10, comprising the steps of:
step 1, detaching a T-shaped pipe from a material injection air pressure control interface, and hermetically connecting the T-shaped pipe to the material injection air pressure control interface after cold alkali metal is put into a temperature control feeding crucible through the material injection air pressure control interface;
step 2, communicating the connection port with a vacuumizing maintaining system for vacuumizing, closing the vacuumizing maintaining system when the actual vacuum degree of the barometer reaches a preset value, communicating the connection port with a buffer gas distribution system, and injecting the required buffer gas into the buffer gas distribution system;
step 3, starting a heating module of the temperature control feeding crucible, and adjusting the air pressure in the temperature control feeding crucible through a buffer gas distribution system:
when feeding is needed, starting a heating component of the temperature control dropping flow pipe, and feeding liquid alkali metal into the evaporation crucible through the temperature control dropping flow pipe;
when the feeding is stopped, the heating component of the temperature control trickle tube is closed, the liquid alkali metal is solidified in the temperature control trickle tube, and the temperature control trickle tube is blocked;
when the material is needed to be fed again, the heating component of the temperature control trickle tube is started again, the alkali metal in the temperature control trickle tube is continuously melted, and the liquid metal enters the evaporation crucible to be fed continuously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010231913.XA CN113444894A (en) | 2020-03-27 | 2020-03-27 | Liquid alkali metal feeding device and method in vacuum environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010231913.XA CN113444894A (en) | 2020-03-27 | 2020-03-27 | Liquid alkali metal feeding device and method in vacuum environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113444894A true CN113444894A (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010231913.XA Pending CN113444894A (en) | 2020-03-27 | 2020-03-27 | Liquid alkali metal feeding device and method in vacuum environment |
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| CN (1) | CN113444894A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011096A (en) * | 2010-12-29 | 2011-04-13 | 上海大学 | Vacuum evaporation system capable of controlling evaporating airflow distribution and components |
| CN105618756A (en) * | 2015-08-25 | 2016-06-01 | 国家电网公司 | Device for realizing 3D metal printing by virtue of supporting structure |
| KR101713112B1 (en) * | 2016-07-26 | 2017-03-08 | 에스엔유 프리시젼 주식회사 | Deposition material supply apparatus which can continuously charged |
| KR101713113B1 (en) * | 2016-07-26 | 2017-03-08 | 에스엔유 프리시젼 주식회사 | Deposition material supply apparatus |
| CN108677027A (en) * | 2018-07-31 | 2018-10-19 | 核工业理化工程研究院 | A kind of multi-stage evaporator and multistage evaporation method for alkali metal purification |
| CN208776826U (en) * | 2018-08-10 | 2019-04-23 | 福建省福联集成电路有限公司 | A kind of crucible device of metal evaporation machine |
| CN109877299A (en) * | 2019-04-16 | 2019-06-14 | 河南科技大学 | One kind getting rid of casting device and gets rid of casting centrifugal pan |
| CN211814606U (en) * | 2020-03-27 | 2020-10-30 | 核工业理化工程研究院 | Liquid alkali metal feedway in vacuum environment |
-
2020
- 2020-03-27 CN CN202010231913.XA patent/CN113444894A/en active Pending
Patent Citations (8)
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| CN105618756A (en) * | 2015-08-25 | 2016-06-01 | 国家电网公司 | Device for realizing 3D metal printing by virtue of supporting structure |
| KR101713112B1 (en) * | 2016-07-26 | 2017-03-08 | 에스엔유 프리시젼 주식회사 | Deposition material supply apparatus which can continuously charged |
| KR101713113B1 (en) * | 2016-07-26 | 2017-03-08 | 에스엔유 프리시젼 주식회사 | Deposition material supply apparatus |
| CN108677027A (en) * | 2018-07-31 | 2018-10-19 | 核工业理化工程研究院 | A kind of multi-stage evaporator and multistage evaporation method for alkali metal purification |
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| Title |
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Application publication date: 20210928 |
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