CN109269329B - Inclined tube type sodium heat pipe manufacturing device and method - Google Patents
Inclined tube type sodium heat pipe manufacturing device and method Download PDFInfo
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- CN109269329B CN109269329B CN201811046936.2A CN201811046936A CN109269329B CN 109269329 B CN109269329 B CN 109269329B CN 201811046936 A CN201811046936 A CN 201811046936A CN 109269329 B CN109269329 B CN 109269329B
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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
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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
- F28D15/06—Control arrangements therefor
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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
- F28D2015/0216—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 having particular orientation, e.g. slanted, or being orientation-independent
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Abstract
The invention provides an inclined tube type sodium heat pipe manufacturing device which can effectively reduce the residue of liquid sodium in a vacuum pipeline in the filling process, prevent the liquid sodium from damaging a vacuum valve or a vacuum pump and improve the manufacturing power.
Description
Technical Field
The invention belongs to the technical field of high-temperature liquid metal heat pipes, and particularly relates to a device and a method for manufacturing an inclined-tube sodium heat pipe.
Background
The sodium heat pipe is a high-efficiency heat transfer device and is applied to the technical fields of temperature measurement, aerospace and the like. The device for manufacturing the sodium heat pipe in the prior art is shown in fig. 1, the upper end of a sodium heat pipe 2 is communicated with the lower part of a right-angle tee joint 4 through a nickel pipe section and a sodium valve B, the upper end of the right-angle tee joint 4 is connected with a sodium tank 3 through a vacuum pipe and a sodium valve A, and the side end of the right-angle tee joint 4 is connected with a vacuum pump 1 through the vacuum pipe and a vacuum valve C. When filling sodium, firstly closing the valve A, opening the valve B and the valve C, starting the vacuum pump to vacuumize the interior of the sodium heat pipe 2 to be filled, then closing the valve C, heating the sodium tank 3 to ensure that sodium in the sodium tank 3 is melted into liquid sodium, then opening the valve A, allowing the liquid sodium to flow into the sodium heat pipe 2 from the sodium tank 3 under the action of gravity and vacuum suction force in the sodium heat pipe, then closing the valve A, opening the valve C again, and vacuumizing the sodium heat pipe 2 filled with the liquid sodium again. The inventor finds that in the process that liquid sodium flows into the sodium heat pipe 2, due to the effect of vacuum suction, part of the liquid sodium can be sucked into the DC section vacuum pipe and cooled to become solid sodium to block the DC section vacuum pipe and the vacuum valve C, and the valve core of the valve C can be damaged, so that the valve body is scrapped, and more seriously, after the sodium solidified in the DC section pipeline blocks the pipeline, the vacuum pump 1 can not carry out the vacuum pumping operation on the sodium heat pipe, so that the vacuum degree of the sodium heat pipe is insufficient, so that the sodium heat pipe is scrapped, and if the sodium in the DC section is heated, remelted and vacuumized, sodium vapor or liquid sodium can be sucked into the vacuum pump, and the vacuum equipment is damaged.
Disclosure of Invention
In order to solve the technical problems, the invention specifically adopts the following technical scheme:
the sodium heat pipe manufacturing device comprises a sodium heat pipe to be filled, wherein the sodium heat pipe is a cylindrical sealed hollow pipe made of stainless steel, and a nickel pipe section is arranged at the upper part of the sodium heat pipe and leads to the inside of a pipe body.
The manufacturing device further comprises an inclined tee joint, the inclined tee joint is provided with an upper outlet, a lower outlet and a side outlet, the side outlet and the horizontal direction form a first included angle, and the first included angle is larger than 0 degree and smaller than 90 degrees, preferably 30 degrees to 60 degrees, such as 45 degrees. The upper end of the nickel pipe section is connected with the lower outlet of the inclined tee joint, and a first sodium valve is arranged between the nickel pipe section and the inclined tee joint. An upper outlet of the inclined tee joint is connected with the sodium tank through a vacuum tube, and a second sodium valve is arranged between the upper outlet of the inclined tee joint and the sodium tank.
The side part outlet of the inclined tee joint is connected with a vacuum pump through a vacuum pipe, a first vacuum valve and a second vacuum valve are sequentially arranged between the side part outlet of the inclined tee joint and the vacuum pump, a right-angle tee joint is further arranged between the first vacuum valve and the vacuum valve, an argon gas bottle is connected with the side part outlet of the right-angle tee joint, a third vacuum valve is arranged between the side part outlet of the right-angle tee joint and the argon gas bottle, and after the third vacuum valve is opened, argon gas in the argon gas bottle can enter the vacuum pipe between the first vacuum valve and the second vacuum valve through the right-angle tee joint.
The sodium tank comprises a cylindrical part at the upper part and an inverted cone part at the lower part, a sodium tank outlet is arranged at the vertex of the inverted cone part, and the sodium tank outlet is connected with the sodium valve through a vacuum pipeline.
And a second included angle is formed between the vacuum tube between the lateral outlet of the inclined tee joint and the first vacuum valve and the horizontal plane, and the first included angle is equal to the second included angle. The first, second and third vacuum valves may be controllable vacuum valves.
The invention provides a manufacturing method of a sodium heat pipe, which is based on the manufacturing device in the embodiment and comprises the following steps:
step 1: and closing the second sodium valve and the third vacuum valve, opening the first sodium valve, the first vacuum valve and the second vacuum valve, starting the vacuum pump, and vacuumizing the whole vacuum pipeline including the sodium heat pipe.
Step 2: and closing the first vacuum valve and the second vacuum valve, heating the sodium tank to a temperature above the melting point of sodium, preferably 120 ℃, and heating a pipeline (comprising a valve body of the inclined tee joint and the two sodium valves) from the sodium heat pipe to the sodium tank.
And step 3: and opening the second sodium valve, so that the second sodium valve is closed after the liquid sodium in the sodium tank flows to the sodium heat pipe, and the heating of the sodium tank and the intermediate pipeline is not stopped in the process.
And 4, step 4: and closing the first vacuum valve and the second vacuum valve, and opening the third vacuum valve so that the vacuum pipeline between the first vacuum valve and the second vacuum valve is filled with argon gas. At this time, the heating of the sodium tank is stopped, and simultaneously, the pipeline from the side outlet of the inclined tee joint to the first vacuum valve and the valve body of the first vacuum valve are heated, and the heating temperature is controlled to be above the sodium melting point, preferably 120 ℃.
And 5: the third vacuum valve is closed and the first vacuum valve is opened.
Step 6: and cooling the outer wall of the whole vacuum pipeline, opening the first vacuum valve and the second vacuum valve after the temperature of the pipeline is reduced to the room temperature, and starting the vacuum pump to vacuumize the whole vacuum pipeline including the sodium heat pipe.
The steps 4 to 6 can be repeated, so that all residual sodium in the DC section pipeline enters the sodium heat pipe.
And 7: and closing the first sodium valve, and performing pinch-off and sealing treatment on the nickel pipe section.
The inclined tube type sodium heat pipe manufacturing device provided by the invention can effectively reduce the residue of liquid sodium in a vacuum pipeline in the filling process, prevent the liquid sodium from damaging a vacuum valve or a vacuum pump, improve the manufacturing power, and simultaneously, because of the protected valve core of the vacuum valve, the vacuum valve does not need to be replaced in the manufacturing process, thereby reducing the manufacturing cost.
Drawings
FIG. 1 is a schematic diagram of a sodium heat pipe manufacturing apparatus in the prior art;
FIG. 2 is a schematic view of a sodium heat pipe manufacturing apparatus disclosed in the present invention;
FIG. 3 is a flow chart of the manufacturing method of the sodium heat pipe disclosed by the invention.
Detailed Description
The invention is further described with reference to the drawings and the specific embodiments in the following description.
Referring to fig. 2, the sodium heat pipe manufacturing device of the present invention includes a sodium heat pipe 2 to be filled, wherein the sodium heat pipe 2 is a cylindrical sealed hollow pipe made of stainless steel, and the upper portion of the sodium heat pipe is provided with a nickel pipe section 11 leading to the inside of the pipe body.
The manufacturing device further comprises an inclined tee joint 4, the inclined tee joint 4 is provided with an upper outlet, a lower outlet and a side outlet, and the side outlet forms an angle of 45 degrees with the horizontal direction. The upper end of the nickel pipe section 11 is connected with the lower outlet of the inclined tee joint 4, and a first sodium valve 6 is arranged between the nickel pipe section and the inclined tee joint. An upper outlet of the inclined tee joint 4 is connected with the sodium tank 3 through a vacuum tube, and a second sodium valve 7 is arranged between the upper outlet of the inclined tee joint 4 and the sodium tank 3.
The lateral part export of tee bend 4 to one side passes through the vacuum tube and is connected with vacuum pump 1, sets gradually first vacuum valve 8 and second vacuum valve 9 between the lateral part export of tee bend 4 to one side and the vacuum pump 1, still be provided with right angle tee bend 12 between first vacuum valve 8 and the vacuum valve 9, right angle tee bend 12 includes left side export, right side export and lateral part export, the argon gas bottle 5 of the lateral part exit linkage of right angle tee bend 12, set up third vacuum valve 10 between the lateral part export of right angle tee bend and the argon gas bottle 5, after third vacuum valve 10 opened, argon gas in the argon gas bottle 5 can pass through right angle tee bend 12 gets into in the vacuum tube between first vacuum valve 8 and the second vacuum valve 9. The left outlet of the right-angle tee 12 is connected with a first vacuum valve 8 through a vacuum tube, and the right outlet is connected with a second vacuum valve 9 through a vacuum tube.
It will be understood by those skilled in the art that "connecting" as described herein is connecting the various components through vacuum lines and ensuring the air tightness of the entire device.
The sodium tank 3 comprises a cylindrical part at the upper part and an inverted cone part at the lower part, the vertex of the inverted cone part is provided with a sodium tank outlet, and the sodium tank outlet is connected with the sodium valve 7 through a vacuum pipeline. When filling is not started, sodium in the sodium tank 3 is in a solid state and is solidified in a lower space in the sodium tank (as shown by hatching in fig. 2), and vacuum is formed above the solid sodium. The sodium tank with the upper cylindrical part and the lower inverted conical part designed by the embodiment has the advantages when being filled with sodium, the structure not only reduces the flowing resistance of liquid sodium, but also reduces the residue of sodium on the inner wall of the sodium tank, and the weight of sodium in the sodium heat pipe is guaranteed.
And the vacuum tube between the side outlet of the inclined tee joint and the first vacuum valve 8 forms an included angle of 45 degrees with the horizontal plane. In order to improve the automation level, the first, second and third vacuum valves may be controllable vacuum valves, and the opening and closing of the valve bodies may be controlled by a controller or an industrial personal computer.
In an embodiment, the present invention provides a method for manufacturing a sodium heat pipe, which is based on the manufacturing apparatus in the above embodiment, and includes the following steps:
step 1: and closing the second sodium valve 7 and the third vacuum valve 10, opening the first sodium valve 6, the first vacuum valve 8 and the second vacuum valve 9, starting the vacuum pump 1, and vacuumizing the sodium heat pipe 2. If a better filling effect is to be achieved, the vacuum degree in the whole device is 10-4Below pa.
Step 2: the first vacuum valve 8 and the second vacuum valve 9 are closed, the sodium tank 3 is heated, the heating temperature is above the melting point of sodium, preferably 120 ℃, the heating time is kept for thirty minutes according to the amount of sodium in the tank, and therefore all sodium is guaranteed to be melted into liquid. And simultaneously, heating pipelines (comprising a tee joint and two sodium valve bodies) between the sodium heat pipe 2 and the sodium tank 3. The heating can be carried out by winding a heating resistance wire, and a temperature measuring device is adopted to measure the temperature of the sodium tank and the surface of the pipeline so as to control the heating power.
And step 3: the second sodium valve 7 is opened, so that the liquid sodium in the sodium tank 3 flows to the sodium heat pipe 2, and then the second sodium valve 7 is closed, and the heating of the sodium tank 3 and the intermediate pipeline is not stopped in the process. When the sodium flows into the sodium heat pipe, the sound that the liquid sodium flows in the pipeline and drips into the sodium heat pipe can be heard, the sound is kept for a period of time after the sound disappears, and the second sodium valve is closed after the sodium in the sodium tank and the sodium remained in the pipeline flow into the sodium heat pipe 2 as much as possible.
And 4, step 4: the first vacuum valve 8 and the second vacuum valve 9 are closed, and the third vacuum valve 10 is opened, so that the vacuum line between the first vacuum valve 8 and the second vacuum valve 9 is filled with argon gas. At this time, the heating of the sodium tank 3 is stopped, and the heating of the pipeline (i.e. the DC section) between the side outlet of the tee joint and the first vacuum valve 8 and the valve body of the first vacuum valve is started, and the heating temperature is controlled above the sodium melting point, preferably 120 ℃, so that the sodium sucked, cooled and solidified in the step 3 in the pipeline of the DC section is remelted and flows into the sodium heat pipe 2 under the action of gravity by virtue of the fact that the angle between the DC section and the horizontal plane is 45 °.
And 5: and closing the third vacuum valve 10, opening the first vacuum valve 8, and flushing argon in the DC section pipeline into the sodium heat pipe (the sodium heat pipe is in vacuum) under the pressure drive at the moment, and flushing residual liquid sodium in the DC section into the sodium heat pipe at the same time.
Step 6: the outer wall of the whole vacuum pipeline is cooled, and the purpose of cooling is to solidify all residual liquid sodium in the pipeline into solid, so that the liquid sodium is prevented from being pumped into a vacuum pump in the subsequent vacuum pumping process. The cooling mode can adopt a natural cooling mode, an air cooling mode or a liquid cooling mode. And after the temperature of the pipeline is reduced to the room temperature, opening the first vacuum valve 8 and the second vacuum valve 9, and starting the vacuum pump 1 to vacuumize the whole vacuum pipeline including the sodium heat pipe.
The steps 4 to 6 can be repeated, so that all residual sodium in the DC section pipeline enters the sodium heat pipe.
And 7: and closing the first sodium valve 6, and performing pinch-off and sealing treatment on the nickel pipe section.
Although particular embodiments of the invention have been described and illustrated in detail, it should be understood that various equivalent changes and modifications could be made to the above-described embodiments in accordance with the spirit of the invention, and the resulting functional effects would still fall within the scope of the invention, without departing from the spirit of the description and the accompanying drawings. The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any minor modifications, equivalent replacements and improvements made to the above embodiment according to the technical spirit of the present invention should be included in the protection scope of the technical solution of the present invention.
Claims (7)
1. The inclined tube type sodium heat pipe manufacturing device is characterized by comprising a sodium heat pipe to be filled, wherein a nickel pipe section is arranged at the upper part of the sodium heat pipe and leads to the inside of a pipe body;
the manufacturing device further comprises an inclined tee joint, the inclined tee joint is provided with an upper outlet, a lower outlet and a side outlet, the side outlet forms a first included angle with the horizontal direction, the upper end of the nickel pipe section is connected with the lower outlet of the inclined tee joint, a first sodium valve is arranged between the upper outlet of the nickel pipe section and the lower outlet of the inclined tee joint, the upper outlet of the inclined tee joint is connected with a sodium tank through a vacuum pipe, and a second sodium valve is arranged between the upper outlet of the inclined tee joint and the sodium tank;
a side outlet of the inclined tee joint is connected with a vacuum pump through a vacuum tube, a first vacuum valve and a second vacuum valve are sequentially arranged between the side outlet of the inclined tee joint and the vacuum pump, a right-angle tee joint is further arranged between the first vacuum valve and the vacuum valve, the side outlet of the right-angle tee joint is connected with an argon bottle, a third vacuum valve is arranged between the side outlet of the right-angle tee joint and the argon bottle, and after the third vacuum valve is opened, argon in the argon bottle can enter the vacuum tube between the first vacuum valve and the second vacuum valve through the right-angle tee joint;
and a second included angle is formed between the vacuum tube between the lateral outlet of the inclined tee joint and the first vacuum valve and the horizontal plane, and the first included angle is equal to the second included angle.
2. The production device of claim 1, wherein the first included angle is 30 ° to 60 °.
3. The manufacturing device according to claim 1, wherein the sodium tank comprises an upper cylindrical part and a lower inverted conical part, the apex of the inverted conical part is provided with a sodium tank outlet, and the sodium tank outlet is connected with the second sodium valve through a vacuum pipeline.
4. The manufacturing apparatus as claimed in claim 1, wherein the first, second and third vacuum valves are controllable vacuum valves.
5. A method for manufacturing a sodium heat pipe, which is based on the manufacturing device of any one of claims 1 to 4, wherein the method comprises the following steps:
step 1: closing the second sodium valve and the third vacuum valve, opening the first sodium valve, the first vacuum valve and the second vacuum valve, starting the vacuum pump, and vacuumizing the whole vacuum pipeline including the sodium heat pipe;
step 2: closing the first vacuum valve and the second vacuum valve, heating the sodium tank at a temperature above the melting point of sodium, and simultaneously heating a valve body of a pipeline from the sodium heat pipe to the sodium tank, wherein the valve body comprises an inclined tee joint and two sodium valves;
and step 3: opening a second sodium valve to enable liquid sodium in the sodium tank to flow to the sodium heat pipe and then close the second sodium valve, and heating the sodium tank and the intermediate pipeline is not stopped in the process;
and 4, step 4: closing the first vacuum valve and the second vacuum valve, and opening the third vacuum valve to enable argon to fill a vacuum pipeline between the first vacuum valve and the second vacuum valve; at the moment, the heating of the sodium tank is stopped, and simultaneously, a pipeline between an outlet at the side part of the inclined tee joint and the first vacuum valve and a valve body of the first vacuum valve are heated, and the heating temperature is controlled to be above the sodium melting point;
and 5: closing the third vacuum valve and opening the first vacuum valve;
step 6: cooling the outer wall of the whole vacuum pipeline, opening a first vacuum valve and a second vacuum valve after the temperature of the pipeline is reduced to room temperature, and starting a vacuum pump to vacuumize the whole vacuum pipeline including the sodium heat pipe;
and 7: and closing the first sodium valve, and performing pinch-off and sealing treatment on the nickel pipe section.
6. The method of claim 5, wherein the heating temperature in the step is 120 ℃.
7. The method according to claim 5, wherein the steps 4 to 6 are repeated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811046936.2A CN109269329B (en) | 2018-09-08 | 2018-09-08 | Inclined tube type sodium heat pipe manufacturing device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811046936.2A CN109269329B (en) | 2018-09-08 | 2018-09-08 | Inclined tube type sodium heat pipe manufacturing device and method |
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| Publication Number | Publication Date |
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| CN109269329A CN109269329A (en) | 2019-01-25 |
| CN109269329B true CN109269329B (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811046936.2A Active CN109269329B (en) | 2018-09-08 | 2018-09-08 | Inclined tube type sodium heat pipe manufacturing device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6086384A (en) * | 1983-10-17 | 1985-05-15 | Mitsubishi Heavy Ind Ltd | Filling method of heat pipe with heat medium |
| JPH0926276A (en) * | 1995-07-13 | 1997-01-28 | Fujikura Ltd | Method and apparatus for manufacturing intermediate and high temperature heat pipe |
| CN2600920Y (en) * | 2003-03-03 | 2004-01-21 | 中国科学院广州能源研究所 | Vacuum liquid filling device for miniature heat pipe |
| CN102182917A (en) * | 2011-03-16 | 2011-09-14 | 中国科学院上海技术物理研究所 | Working medium filling device and method of loop circuit heat pipe at medium and low temperature |
| CN107436106A (en) * | 2017-09-12 | 2017-12-05 | 大连海事大学 | A kind of charging device and method of liquid metal high temperature pulsating heat pipe |
-
2018
- 2018-09-08 CN CN201811046936.2A patent/CN109269329B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6086384A (en) * | 1983-10-17 | 1985-05-15 | Mitsubishi Heavy Ind Ltd | Filling method of heat pipe with heat medium |
| JPH0926276A (en) * | 1995-07-13 | 1997-01-28 | Fujikura Ltd | Method and apparatus for manufacturing intermediate and high temperature heat pipe |
| CN2600920Y (en) * | 2003-03-03 | 2004-01-21 | 中国科学院广州能源研究所 | Vacuum liquid filling device for miniature heat pipe |
| CN102182917A (en) * | 2011-03-16 | 2011-09-14 | 中国科学院上海技术物理研究所 | Working medium filling device and method of loop circuit heat pipe at medium and low temperature |
| CN107436106A (en) * | 2017-09-12 | 2017-12-05 | 大连海事大学 | A kind of charging device and method of liquid metal high temperature pulsating heat pipe |
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| CN109269329A (en) | 2019-01-25 |
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