CN114857963A - Tesla valve condenser low temperature loop heat pipe - Google Patents
Tesla valve condenser low temperature loop heat pipe Download PDFInfo
- Publication number
- CN114857963A CN114857963A CN202210259783.XA CN202210259783A CN114857963A CN 114857963 A CN114857963 A CN 114857963A CN 202210259783 A CN202210259783 A CN 202210259783A CN 114857963 A CN114857963 A CN 114857963A
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- CN
- China
- Prior art keywords
- tesla valve
- condenser
- liquid
- pipeline
- evaporator
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- F28D15/0266—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 with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Abstract
The invention discloses a low-temperature loop heat pipe of a Tesla valve condenser. The structure of the device comprises a liquid storage device, an evaporator, a gas-liquid pipeline and a Tesla valve condenser. The liquid storage device is used for storing redundant liquid working medium of the evaporator. The evaporator inner core is a multilayer silk screen or a porous medium, and the evaporator shell can be processed into various appearance structures, so that the evaporator inner core is favorably coupled with interfaces such as a detector. The condenser consists of a Tesla valve, a condensation section and a local heater, the intermittent heating design of the heater of the condenser realizes the driving of liquid working medium in the condensation section, the design of the Tesla valve realizes the unidirectional circulation of the liquid working medium in the condensation section, and the liquid working medium enters the evaporator along a liquid pipeline. The invention has the advantages that the design of the condenser Tesla valve and the local heater solves the problem that no liquid working medium exists in the low-temperature loop heat pipe evaporator, and improves the starting stability of the low-temperature loop heat pipe.
Description
The technical field is as follows:
the invention relates to the field of low-temperature phase change heat exchange, in particular to a heat exchange element design based on Tesla valve and loop heat pipe principles.
Background art:
spacecraft components require thermal control systems in deep space exploration, earth observation and space superconducting applications to ensure their ability to operate at low temperatures (below 200K). The refrigerator has electromagnetic interference and mechanical vibration to the detector and needs to be placed far away from the detector. The low temperature loop heat pipe is an efficient remote heat transfer device between the refrigerator and the detector. The low-temperature loop heat pipe can effectively isolate mechanical vibration and electromagnetic interference of the refrigerator, and has the advantages of high heat transfer efficiency, long heat transfer distance, flexible layout, no moving parts, high reliability and the like. The working medium of the low-temperature loop heat pipe is in a supercritical or superheated steam state at normal temperature, namely no liquid working medium exists in the capillary core of the evaporator, and the evaporator starting heat pipe cannot be heated. Therefore, the problems of no liquid phase low-temperature working medium wetting, high heat flow density, light weight and the like of the evaporator capillary core need to be solved.
The traditional low-temperature loop heat pipe technology generally adopts a method of connecting secondary evaporators in series or in parallel, and liquid is pushed into a main evaporator by heating the secondary evaporator in the starting stage. In the normal operation stage of the series secondary evaporator method, the additional flow resistance is larger, and the heat transfer performance of the loop heat pipe is greatly reduced. In the normal operation stage of the parallel secondary evaporator equation, although additional flow resistance cannot be generated on the main circuit, the volume of the gas reservoir is increased due to the fact that the working medium filling amount is increased due to the parallel secondary evaporator structure, and the weight of the system is greatly increased. The low-temperature loop heat pipe technology provided by the invention solves the problem of pushing liquid in a starting stage to enter the evaporator through the two Tesla valves and the local heater, the working medium flows along the Tesla valves in the positive direction in a normal operation stage, the additional flow resistance is very small, the volume of the flow channel of the added Tesla valves is very small, the filling amount of the working medium is basically not influenced, and the problem that a capillary core of the evaporator is not wetted by the liquid-phase low-temperature working medium is solved under the condition that the heat transfer heat flow density and the system weight are not influenced. Therefore, the design and application of the low-temperature loop heat pipe of the Tesla valve condenser have great significance for solving the heat dissipation problem of high heat flow density and low-temperature heat sources in the future heat control technology.
The invention content is as follows:
the objects of the present invention include:
1 to solve the heat dissipation problem of high heat flux density, low temperature heat source, provide usable heat transfer component.
2, the integration level of a heat transfer element in the thermal control technology is improved, and the problem that a capillary core of an evaporator is wetted by a liquid-phase-free low-temperature working medium can be solved by adding a simple Tesla valve
3, the problems of reducing heat transfer performance and increasing system weight in the traditional low-temperature loop heat pipe design are solved, the heat transfer capacity of application is enhanced, and the lightweight design of the system is improved.
In order to solve the problems, the design idea of the invention is as follows:
the invention provides a Tesla valve condenser low-temperature loop heat pipe, wherein a cold source cools a condensation section 1-2 under the state that a liquid storage device and an evaporator 3 have no liquid working medium, and the working medium is condensed into liquid; opening the local heaters 1-3, evaporating the working medium into superheated steam and expanding to do work; because the reverse flow resistance of the inlet Tesla valve 1-4 is large, the gas can only flow to the condensation section 1-2, and the liquid in the condensation section 1-2 is pushed to flow and flows out of the condenser (1) through the outlet Tesla valve 1-1. And (4) closing the local heater 1-3, and because the reverse flow resistance of the outlet Tesla valve 1-1 is large, the working medium can be supplemented to the condensing section 1-2 only through the inlet Tesla valve 1-4 and is condensed into liquid. By intermittently turning on and off the local heaters 1-3, liquid is gradually pushed out of the condenser 1, through the liquid line 2 into the reservoir and the evaporator 3. Therefore, the problem that the capillary core of the evaporator is wetted by liquid-phase-free low-temperature working medium can be solved through the design of the low-temperature loop heat pipe of the Tesla valve condenser.
The specific structural design of the invention is as follows:
the invention provides a Tesla valve condenser low-temperature loop heat pipe which comprises an outlet Tesla valve 1-1, a condensation section 1-2, a local heater 1-3, an inlet Tesla valve 1-4, a liquid pipeline 2, a liquid storage device, an evaporator 3 and a gas pipeline 4 in a condenser 1.
In the low-temperature loop heat pipe of the Tesla valve condenser, a condenser 1 is connected with a liquid storage device and an evaporator 3 through a liquid pipeline 2 and a gas pipeline 4, the liquid pipeline 2 is respectively welded on an outlet of a pipeline of the condenser 1 and inlet end covers of the liquid storage device and the evaporator 3, and the gas pipeline 3 is respectively welded on an inlet of the pipeline of the condenser 1 and outlet end covers of the liquid storage device and the evaporator 3. The advantage of this structure is that the welded connection can effectively ensure the tightness of the device.
In the low-temperature loop heat pipe of the Tesla valve condenser, a condenser 1 comprises an outlet Tesla valve 1-1, a condensation section 1-2, a local heater 1-3 and an inlet Tesla valve 1-4; the inlet and outlet of the flow passage of the outlet Tesla valve 1-1 and the inlet Tesla valve 1-4 are respectively welded with a small section of pipeline, and the pipe walls of the pipeline are respectively welded with the inlet and outlet of the pipeline of the condensation section 1-2, the liquid pipeline 2 and the gas pipeline 4; the outlet Tesla valve 1-1 and the inlet Tesla valve 1-4 have a one-way valve function, so that gas enters the condensation section 1-2 through the inlet Tesla valve 1-4 and is condensed into liquid, and the gas generated by the local heater 1-3 pushes the liquid in the condensation section 1-2 to flow out of the condenser through the outlet Tesla valve 1-1 due to the non-return function of the inlet Tesla valve 1-4. The structure has the advantages that the working medium positively flows along the Tesla valve in the normal operation stage, the additional flow resistance is very small, the volume of the added Tesla valve flow channel is very small, the charging amount of the working medium is basically not influenced, and the problem that the capillary core of the evaporator is not wetted by the liquid-phase low-temperature working medium is solved under the condition that the heat transfer heat flow density and the system weight are not influenced.
In the Tesla valve condenser low-temperature loop heat pipe, a liquid storage device and an evaporator 3 shell can be processed into any geometric shape, the internal structure is a sealed cylindrical cavity, the inside of the evaporator cavity is a porous capillary wick structure, a liquid pipeline penetrates through the liquid storage device and extends to the inside of the capillary wick, and the liquid storage device and the evaporator 3 are horizontally arranged.
The structure has the advantages that the liquid reservoir and the evaporator 3 shell can be processed into any geometric shapes, so that the device and the detector can be coupled more conveniently, and the liquid pipeline penetrates through the liquid reservoir and extends into the capillary core, so that the capillary core can be ensured to be soaked preferentially in the starting process.
Description of the drawings:
FIG. 1 is a schematic view of the appearance of a low temperature loop heat pipe of a Tesla valve condenser of the present invention;
FIG. 2 is a schematic diagram of a Tesla valve condenser low temperature loop heat pipe condenser of the present invention;
reference numbers in the figures:
1. a condenser; 2. a liquid line; 3. a reservoir and an evaporator; 4. a gas line; 1-1. an outlet tesla valve; 1-2. a condensation section; 1-3. local heater; 1-4 inlet tesla valves.
The specific implementation mode is as follows:
the following detailed description of specific embodiments of the invention is provided in connection with the accompanying drawings.
The structure of the low-temperature loop heat pipe of the condenser of the Tesla valve is shown in figure 1, and comprises a condenser 1, a liquid pipeline 2, a liquid storage device, an evaporator 3 and a gas pipeline 4. The condenser 1 is specially designed and comprises an outlet Tesla valve 1-1, a condensation section 1-2, a local heater 1-3 and an inlet Tesla valve 1-4. The inlet and outlet of the flow passage of the outlet Tesla valve 1-1 and the inlet Tesla valve 1-4 are respectively welded with a small section of pipeline, and the pipe walls of the pipeline are respectively welded with the inlet and outlet of the pipeline of the condensation section 1-2, the liquid pipeline 2 and the gas pipeline 4; the other ends of the liquid line 2 and the gas line 4 are welded to the inlet and outlet end caps of the accumulator and the evaporator 3, respectively.
The specific working process of the low-temperature loop heat pipe of the Tesla valve condenser provided by the invention is as follows: in the state that the liquid storage device and the evaporator 3 have no liquid working medium, the cold source cools the condensation section 1-2, and the working medium is condensed into liquid; opening the local heaters 1-3, evaporating the working medium into superheated steam and expanding to do work; because the reverse flow resistance of the inlet Tesla valve 1-4 is large, the gas can only flow to the condensation section 1-2, and the liquid in the condensation section 1-2 is pushed to flow and flows out of the condenser 1 through the outlet Tesla valve 1-1. The local heater 1-3 is closed, and because the reverse flow resistance of the outlet Tesla valve 1-1 is large, the working medium can be supplemented to the condensing section 1-2 only through the inlet Tesla valve 1-4 to be condensed into liquid. By intermittently turning on and off the local heaters 1-3, liquid is gradually pushed out of the condenser 1, through the liquid line 2 into the reservoir and the evaporator 3. Therefore, the problem that the capillary core of the evaporator is wetted by liquid-phase-free low-temperature working medium can be solved through the design of the low-temperature loop heat pipe of the condenser of the Tesla valve.
The tesla valve in the low-temperature loop heat pipe of the tesla valve condenser is not only an inlet tesla valve and an outlet tesla valve introduced in the invention, but also the low-temperature loop heat pipe with different tesla valve numbers, different tesla valve flow channels numbers and different tesla valve installation positions falls into the protection scope of the invention.
Claims (3)
1. The utility model provides a tesla valve condenser low temperature loop heat pipe, includes condenser (1), liquid pipeline (2), reservoir and evaporimeter (3) and gas line (4), its characterized in that:
condenser (1) link to each other through liquid pipeline (2) and gas pipeline (4) with evaporimeter (3) with reservoir, liquid pipeline (2) weld respectively on the export of condenser (1) pipeline and reservoir and evaporimeter (3) entry end lid, gas line (4) weld respectively on the entry of condenser (1) pipeline and reservoir and evaporimeter (3) exit end lid.
2. A tesla valve condenser low temperature loop heat pipe as claimed in claim 1 wherein:
the condenser (1) comprises an outlet Tesla valve (1-1), a condensation section (1-2), a local heater (1-3) and an inlet Tesla valve (1-4); the inlet and the outlet of the flow passage of the outlet Tesla valve (1-1) and the inlet Tesla valve (1-4) are respectively welded with a small section of pipeline, and the pipe wall of the pipeline is respectively welded with the inlet and the outlet of the pipeline of the condensation section (1-2), the liquid pipeline (2) and the gas pipeline (4); the outlet Tesla valve (1-1) and the inlet Tesla valve (1-4) have the function of one-way valves, so that gas enters the condensation section (1-2) through the inlet Tesla valve (1-4) and is condensed into liquid, and the gas generated by the local heater (1-3) pushes the liquid in the condensation section (1-2) to flow out of the condenser through the outlet Tesla valve (1-1) due to the non-return function of the inlet Tesla valve (1-4).
3. A tesla valve condenser low temperature loop heat pipe as claimed in claim 1 wherein:
the internal structures of the liquid storage device and the evaporator (3) are sealed cylindrical cavities, the internal structure of the evaporator cavity is a porous capillary core structure, a liquid pipeline penetrates through the liquid storage device and extends to the inside of the capillary core, and the liquid storage device and the evaporator (3) are horizontally arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210259783.XA CN114857963A (en) | 2022-03-16 | 2022-03-16 | Tesla valve condenser low temperature loop heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210259783.XA CN114857963A (en) | 2022-03-16 | 2022-03-16 | Tesla valve condenser low temperature loop heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114857963A true CN114857963A (en) | 2022-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210259783.XA Pending CN114857963A (en) | 2022-03-16 | 2022-03-16 | Tesla valve condenser low temperature loop heat pipe |
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| Country | Link |
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| CN (1) | CN114857963A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115320833A (en) * | 2022-10-12 | 2022-11-11 | 南京航空航天大学 | Air supplement type plasma jet exciter based on Tesla valve |
| CN115381291A (en) * | 2022-08-31 | 2022-11-25 | 杭州电子科技大学富阳电子信息研究院有限公司 | Water dispenser quick heating device and control method thereof |
-
2022
- 2022-03-16 CN CN202210259783.XA patent/CN114857963A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115381291A (en) * | 2022-08-31 | 2022-11-25 | 杭州电子科技大学富阳电子信息研究院有限公司 | Water dispenser quick heating device and control method thereof |
| CN115320833A (en) * | 2022-10-12 | 2022-11-11 | 南京航空航天大学 | Air supplement type plasma jet exciter based on Tesla valve |
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