CN211814606U - Liquid alkali metal feedway in vacuum environment - Google Patents

Liquid alkali metal feedway in vacuum environment Download PDF

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Publication number
CN211814606U
CN211814606U CN202020418651.3U CN202020418651U CN211814606U CN 211814606 U CN211814606 U CN 211814606U CN 202020418651 U CN202020418651 U CN 202020418651U CN 211814606 U CN211814606 U CN 211814606U
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crucible
pipe
alkali metal
temperature control
temperature
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CN202020418651.3U
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金策
王晓鹏
杨佳琦
刘涛
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Research Institute of Physical and Chemical Engineering of Nuclear Industry
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Research Institute of Physical and Chemical Engineering of Nuclear Industry
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    • 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

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Abstract

The utility model discloses a liquid alkali metal feedway among vacuum environment, including inside evaporation cavity's that forms casing and arranging in temperature control feed crucible and evaporation crucible in the evaporation cavity, 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 utility model discloses can provide the continuity and the stability of alkali metal vapour supply to alkali metal evaporation plant supply liquid material.

Description

Liquid alkali metal feedway in vacuum environment
Technical Field
The utility model relates to an alkali metal feed technical field especially relates to a liquid alkali metal feedway among 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.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a liquid alkali metal feedway among the vacuum environment to the unstable problem of material supply when the alkali metal solid material of the alkali metal evaporation plant supply that exists causes among the prior art.
For realizing the utility model discloses a technical scheme that the purpose adopted is:
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.
The utility model discloses an on the other hand still includes liquid alkali metal feedway's feed method in the vacuum environment, includes following step:
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.
Compared with the prior art, the beneficial effects of the utility model are 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 diagram 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 present invention will be described in further detail with reference to the following drawings and specific embodiments. 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 utility model discloses still can control the supply volume through temperature control dropping flow tube 4, when temperature control dropping flow tube 4 stopped heating, the material solidification stopped the supply liquid alkali metal with its shutoff in temperature control dropping flow tube 4.
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:
step 1, detaching a T-shaped pipe 9 from a material injection air pressure control interface 1, and hermetically connecting the T-shaped pipe 9 to the material injection air pressure control interface 1 after cold alkali metal is put into a temperature control feeding crucible 3 through the material injection air pressure control interface 1;
step 2, communicating the connecting port 7 with a vacuumizing maintaining system for vacuumizing, and when the actual vacuum degree of the barometer 6 reaches 10-3When the buffer gas is used, the vacuum maintaining system is closed, the connecting port 7 is communicated with a buffer gas distribution system, and the buffer gas distribution system injects the required buffer gas;
step 3, starting a heating module of the temperature control feeding crucible 3, adjusting the air pressure in the temperature control feeding crucible 3 through a buffer gas distribution system, starting a heating component of a temperature control dripping pipe 4 when feeding is needed, and feeding liquid alkali metal into an evaporation crucible 5 through the temperature control dripping pipe 4;
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, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

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.
CN202020418651.3U 2020-03-27 2020-03-27 Liquid alkali metal feedway in vacuum environment Active CN211814606U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113444894A (en) * 2020-03-27 2021-09-28 核工业理化工程研究院 Liquid alkali metal feeding device and method in vacuum environment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113444894A (en) * 2020-03-27 2021-09-28 核工业理化工程研究院 Liquid alkali metal feeding device and method in vacuum environment

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