CN114576866A - Gravity heat pipe capable of controlling temperature range - Google Patents
Gravity heat pipe capable of controlling temperature range Download PDFInfo
- Publication number
- CN114576866A CN114576866A CN202210346997.0A CN202210346997A CN114576866A CN 114576866 A CN114576866 A CN 114576866A CN 202210346997 A CN202210346997 A CN 202210346997A CN 114576866 A CN114576866 A CN 114576866A
- Authority
- CN
- China
- Prior art keywords
- temperature
- valve body
- heat pipe
- pipe
- gravity
- Prior art date
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/90—Solar heat collectors using working fluids using internal thermosiphonic circulation
- F24S10/95—Solar heat collectors using working fluids using internal thermosiphonic circulation having evaporator sections and condenser sections, e.g. heat pipes
-
- 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
-
- 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
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a gravity assisted heat pipe capable of controlling a temperature interval, which comprises an evaporation section and a condensation section; the outflow end of the evaporation section is connected with the inflow end of the condensation section through a first heat insulation pipe, the outflow end of the condensation section is connected with the inflow end of the evaporation section through a second heat insulation pipe, and a liquid storage tank is arranged on the second heat insulation pipe; the first heat insulation pipe is provided with a low-temperature throttle valve close to the inflow end of the condensation section, and the second heat insulation pipe is provided with a high-temperature throttle valve close to the outflow end of the liquid storage tank. The low-temperature throttling valve and the high-temperature throttling valve are identical in structure and respectively comprise a valve body and a communicating hole penetrating through the valve body, the inner wall of the valve body is sunken in a step shape to form a sealing step, the outer wall of the valve body is fixed with the inner wall of the heat insulation pipe, the valve body of the low-temperature throttling valve is made of negative expansion materials, and the valve body of the high-temperature throttling valve is made of thermal expansion materials. According to the invention, the communication state of the condensation section and the evaporation section is controlled in real time according to the internal temperature of the gravity heat pipe, so that the accurate temperature control of the gravity heat pipe is realized, and the safety performance of the gravity heat pipe is improved.
Description
Technical Field
The invention relates to the technical field of gravity heat pipes, in particular to a gravity heat pipe capable of controlling a temperature range.
Background
The heat pipe is used as an efficient heat transfer element, has the advantages of high heat transfer efficiency, uniform temperature, simple structure, reliable work and the like, and is widely applied to various occasions, such as the fields of power shortage areas, solar energy application, low-temperature medical preservation and the like. The gravity heat pipe is the simplest heat pipe with the optimal effect, and is widely applied to the field of solar energy. The gravity heat pipe during operation can be divided into evaporation zone, adiabatic section and three region of condensation segment, and liquid working medium evaporation gasification when the evaporation zone of gravity heat pipe is heated, and steam passes through the adiabatic section and moves and gives the cold source with the heat through the heat pipe wall transmission behind the condensation segment, and steam meets the condensation behind the cold release heat and becomes liquid working medium again, and liquid working medium flows back to the evaporation zone under the action of gravity, so the heat of transmission circulates repeatedly.
In order to realize the temperature control function of the gravity heat pipe, chinese patent No. 200780100026.1 proposes a temperature-controlled gravity heat pipe, in which an intercepting valve port is arranged at a condensation section of the gravity heat pipe, and the intercepting valve port is controlled to automatically close and block the backflow of a liquid working medium when the temperature is too high, so as to prevent the temperature of the condensation section of the gravity heat pipe from continuously rising, and realize the control of the gravity heat pipe. However, the temperature-controlled gravity heat pipe can only control the temperature not to be higher than the rated maximum temperature when the gravity heat pipe works, and cannot control the rated minimum temperature when the gravity heat pipe works. Therefore, it is desirable to provide a gravity assisted heat pipe capable of controlling a temperature range, so as to effectively control the internal temperature of the gravity assisted heat pipe during the operation.
Disclosure of Invention
The invention aims to solve the problems and provides the gravity heat pipe with the controllable temperature interval, so that the accurate regulation and control of the working temperature interval of the gravity heat pipe are realized.
In order to achieve the purpose, the invention adopts the following technical scheme:
a gravity heat pipe capable of controlling a temperature interval comprises an evaporation section and a condensation section;
the outflow end of the evaporation section is connected with the inflow end of the condensation section through a first heat insulation pipe, the outflow end of the condensation section is connected with the inflow end of the evaporation section through a second heat insulation pipe, and the second heat insulation pipe is provided with a liquid storage tank;
the first heat insulation pipe is provided with a low-temperature throttle valve close to the inflow end of the condensation section, and the second heat insulation pipe is provided with a high-temperature throttle valve close to the outflow end of the liquid storage tank.
Preferably, the low-temperature throttling valve comprises a first valve body and a first communication hole penetrating through the first valve body, the first valve body is made of negative expansion materials, the inner wall of the first valve body is sunken in a step shape to form a first sealing step, and the outer wall of the first valve body is fixed with the inner wall of the first heat insulation pipe.
Preferably, the high-temperature throttle valve comprises a second valve body and a second communication hole penetrating through the second valve body, the second valve body is made of thermal expansion materials, the inner wall of the second valve body is sunken in a step shape to form a second sealing step, and the outer wall of the second valve body is fixed with the inner wall of the second heat insulation pipe.
Preferably, the condensation section is provided with a vent valve.
Preferably, the evaporation section is connected with the pressure relief liquid storage tank through a pipeline.
The invention has the following beneficial technical effects:
according to the invention, the low-temperature throttle valve made of negative expansion materials is arranged in the first heat-insulating pipe, the high-temperature throttle valve made of thermal expansion materials is arranged in the second heat-insulating pipe in a matching manner, and the opening and closing of each throttle valve body are controlled according to the internal temperature of the gravity heat pipe, so that the communication state of the condensation section and the evaporation section in the gravity heat pipe is controlled in real time, the accurate temperature control of the internal temperature of the gravity heat pipe in the working process is realized, the working temperature of the gravity heat pipe is always controlled within a rated working temperature range, and the potential safety hazard caused by temperature change in the working process of the gravity heat pipe is eliminated.
Drawings
FIG. 1 is a schematic view of a gravity assisted heat pipe with controllable temperature range according to the present invention.
FIG. 2 is a schematic structural diagram of the low-temperature throttle valve of the present invention in an open state.
FIG. 3 is a schematic structural diagram of the low-temperature throttle valve of the invention in a closed state.
FIG. 4 is a schematic structural view of the high-temperature throttle valve of the present invention in an open state.
FIG. 5 is a schematic structural view of the high-temperature throttle valve of the present invention in a closed state.
FIG. 6 is a schematic view of the external pressure relief reservoir of the present invention.
In the figure: 1. the evaporator comprises an evaporation section, a condensation section, a first heat insulation pipe, a second heat insulation pipe, a low-temperature throttling valve, a valve body 51, a first valve body, a first connecting hole 52, a first sealing step 53, a high-temperature throttling valve 6, a second valve body 61, a second valve body 62, a second connecting hole 63, a second sealing step, a liquid storage tank 7, a liquid storage tank 8, an exhaust valve 9 and a pressure relief storage tank.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a gravity heat pipe between controllable temperature interval, as shown in figure 1, includes evaporation zone 1 and condensation segment 2, and evaporation zone 1 is used for heating the liquid working medium in the gravity heat pipe for liquid working medium evaporates after being heated and becomes gaseous working medium, and condensation segment 2 is used for carrying out the heat exchange with gaseous working medium and cold source, makes the condensation become liquid working medium again after the gaseous working medium heat exchange in the gravity heat pipe. The outflow end of the evaporation section 1 is connected with the inflow end of the condensation section 2 through a first heat-insulating pipe 3, and the outflow end of the condensation section 2 is connected with the inflow end of the evaporation section 1 through a second heat-insulating pipe 4. The condensing section 2 is provided with an exhaust valve 8 for controlling the internal air pressure of the gravity heat pipe; the second heat-insulating pipe 4 is provided with a liquid storage tank 7 for storing the liquid working medium obtained after condensation in the condensation section.
Be provided with low temperature choke valve 5 in the first heat insulating pipe 3, low temperature choke valve 5 is located and is close to 2 inflow ends of condensation segment, including first valve body 51 and the first through-hole 52 that runs through first valve body 51, and first valve body 51 adopts the negative expansion material to make, and the inner wall is the sunken first sealed step 53 that forms of echelonment, and the outer wall is fixed mutually with 3 inner walls of first heat insulating pipe. When the internal temperature of the gravity assisted heat pipe is within the rated temperature range, two ends of the first communication hole 52 in the low-temperature throttle valve 5 are communicated, and the low-temperature throttle valve 5 is in an open state, as shown in fig. 2; when the internal temperature of the gravity heat pipe is lower than the lowest temperature of the rated temperature range of the gravity heat pipe, the first valve body 51 expands radially along the first heat insulating pipe 3 after being cooled, the bottom surface of the first sealing step 53 is closed to form a first blocking surface after expansion, and the first communication hole 52 in the first valve body 51 is blocked, so that the low-temperature throttle valve 5 is in a closed state, as shown in fig. 3.
The high-temperature throttle valve 6 is arranged in the second heat-insulating pipe 4, the high-temperature throttle valve 6 is arranged at the position close to the outflow end of the liquid storage tank 7 and comprises a second valve body 61 and a second communication hole 65 penetrating through the second valve body 61, the second valve body 61 is made of thermal expansion materials, the inner wall of the second valve body is sunken in a step shape to form a second sealing step 63, and the outer wall of the second valve body is fixed with the inner wall of the second heat-insulating pipe 4. When the internal temperature of the gravity assisted heat pipe is within the rated temperature range, the two ends of the second communication hole 62 in the high-temperature throttle valve 6 are communicated, and the high-temperature throttle valve 6 is in an open state, as shown in fig. 4; when the internal temperature of the gravity heat pipe is higher than the maximum temperature of the rated temperature range of the gravity heat pipe, the second valve body 61 expands radially along the second heat-insulating pipe 4 after being heated, the bottom surface of the second sealing step 63 is closed to form a second shielding surface after expansion, and the second communication hole 62 in the second valve body 61 is blocked, so that the high-temperature throttle valve 6 is in a closed state, as shown in fig. 5.
In order to prevent explosion caused by too high air pressure inside the gravity heat pipe, the exhaust valve 8 is arranged at the condensation section 2 of the gravity heat pipe, and partial air in the gravity heat pipe is exhausted by using the exhaust valve 8, so that the air pressure in the gravity heat pipe is reduced in time, and the stability of the air pressure in the gravity heat pipe is ensured. If an exhaust valve is not arranged at the condensation section of the gravity heat pipe, the evaporation section 1 of the gravity pipeline can be connected with the pressure relief liquid storage tank 9 by utilizing a pipeline to reduce the internal air pressure of the gravity heat pipe, as shown in fig. 6, when the internal air pressure of the gravity heat pipe is higher, part of liquid working medium in the gravity heat pipe flows into the pressure relief liquid storage tank 9 under the action of high pressure, and is temporarily stored in the pressure relief liquid storage tank 9, so that the internal air pressure of the gravity heat pipe is reduced, after the internal air pressure of the gravity heat pipe returns to normal, the liquid working medium temporarily stored in the pressure relief liquid storage tank 9 flows into the evaporation section 1 of the gravity heat pipe again through the pipeline, and a capillary structure is arranged in the pipeline connecting the pressure relief liquid storage tank and the evaporation section of the gravity heat pipe, so that saturated steam in the evaporation section of the gravity heat pipe can be prevented from flowing into the pressure relief liquid storage tank.
The working process of the gravity assisted heat pipe with the controllable temperature interval is as follows:
when the internal temperature of the gravity heat pipe is in the rated working temperature range, the first valve body 51 in the low-temperature throttle valve 5 and the second valve body 61 in the high-temperature throttle valve 6 are not expanded, the first communication hole 52 and the second communication hole 62 are both in a communication state, the low-temperature throttle valve 5 and the high-temperature throttle valve 6 are both in an open state, the liquid working medium in the gravity heat pipe is heated and evaporated in the evaporation section 1 and converted into a gaseous working medium, the gaseous working medium flows into the first heat insulation pipe 3 and flows into the condensation section 5 of the gravity heat pipe through the first communication hole 52 of the low-temperature throttle valve 5, the gaseous working medium in the condensing section 5 exchanges heat with the cold source and then is condensed into liquid working medium again, the liquid working medium flows into the liquid storage tank 7 through the second heat insulation pipe 4, then flows back to the evaporation section 1 of the gravity assisted heat pipe through the second communication hole 62 of the high temperature throttle valve 6, and continues to perform heat exchange circulation in the gravity assisted heat pipe.
When the internal temperature of the gravity heat pipe is higher than the highest temperature of the rated working temperature range, the first valve body 51 in the low-temperature throttle valve 5 is not expanded, the first communication hole 52 is in a communication state, the second valve body 61 in the high-temperature throttle valve 6 is expanded to seal the second communication hole 62, at this time, the low-temperature throttle valve 5 is in an open state, the high-temperature throttle valve 6 is in a closed state, the gaseous working medium in the gravity heat pipe is condensed into the liquid working medium after the heat exchange between the condensing section 2 and the cold source, however, since the high-temperature throttling valve 6 in the second heat-insulating pipe 4 is in a closed state, the liquid working medium is intercepted by the high-temperature throttling valve 6 and can only be temporarily stored in the liquid storage tank 7, the liquid working medium cannot flow back to the evaporation section 1, the liquid working medium is prevented from flowing back to the evaporation section 1 again to continue gasification and transfer heat to the condensation section 2, and therefore continuous temperature rise of the condensation section of the gravity heat pipe is effectively avoided. When the internal temperature of the gravity heat pipe is reduced to the rated working temperature range, the second valve body 61 in the high-temperature throttle valve 6 is contracted, so that the two ends of the second communication hole 62 are communicated, the high-temperature throttle valve 6 is restored to the open state, the liquid working medium temporarily stored in the liquid storage tank 7 flows out of the liquid storage tank 7, flows back to the evaporation section 1 of the gravity heat pipe through the second communication hole 62 of the high-temperature throttle valve 6, and continues to perform heat exchange circulation in the gravity heat pipe.
When the internal temperature of the gravity heat pipe is lower than the lowest temperature of the rated working temperature range, the first valve body 51 in the low-temperature throttle valve 5 expands to plug the first communication hole 52, the second valve body 61 in the high-temperature throttle valve 6 does not expand, the second communication hole 62 is in a communication state, the low-temperature throttle valve 5 is in a closed state, the high-temperature throttle valve 6 is in an open state, the liquid working medium in the gravity heat pipe is evaporated into a gaseous working medium after the evaporation section 1 is heated, the gaseous working medium is intercepted in the evaporation section 1 of the gravity heat pipe and cannot enter the condensation section 2 because the low-temperature throttle valve 5 is in the closed state, the temperature is increased due to the increase of the air pressure in the evaporation section 1, and therefore the internal temperature of the gravity heat pipe is increased. When the internal temperature of the gravity heat pipe rises to the rated working temperature range, the first valve body 51 in the low-temperature throttle valve 5 contracts, so that the two ends of the first communication hole 52 are communicated, the low-temperature throttle valve 5 is restored to the opening state, the gaseous working medium intercepted in the evaporation section 1 flows back to the condensation section 2 of the gravity heat pipe through the first communication hole 52 of the low-temperature throttle valve 5, and the heat exchange circulation is continuously carried out in the gravity heat pipe.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make various changes, modifications, additions and substitutions within the spirit and scope of the present invention.
Claims (5)
1. A gravity heat pipe capable of controlling a temperature interval is characterized by comprising an evaporation section and a condensation section;
the outflow end of the evaporation section is connected with the inflow end of the condensation section through a first heat insulation pipe, the outflow end of the condensation section is connected with the inflow end of the evaporation section through a second heat insulation pipe, and the second heat insulation pipe is provided with a liquid storage tank;
the first heat insulation pipe is provided with a low-temperature throttle valve close to the inflow end of the condensation section, and the second heat insulation pipe is provided with a high-temperature throttle valve close to the outflow end of the liquid storage tank.
2. A gravity heat pipe according to claim 1, wherein the low-temperature throttle valve comprises a first valve body and a first communication hole penetrating through the first valve body, the first valve body is made of a negative expansion material, the inner wall of the first valve body is recessed in a stepped manner to form a first sealing step, and the outer wall of the first valve body is fixed to the inner wall of the first heat insulating pipe.
3. A gravity heat pipe according to claim 2, wherein the high temperature throttle valve comprises a second valve body and a second communication hole penetrating through the second valve body, the second valve body is made of a thermal expansion material, the inner wall of the second valve body is recessed in a step shape to form a second sealing step, and the outer wall of the second valve body is fixed to the inner wall of the second heat insulation pipe.
4. A gravity heat pipe with a controllable temperature interval according to claim 3, wherein the condensation section is provided with an exhaust valve.
5. A gravity assisted heat pipe according to claim 3 wherein the evaporator section is connected to the pressure relief reservoir via a conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210346997.0A CN114576866A (en) | 2022-04-01 | 2022-04-01 | Gravity heat pipe capable of controlling temperature range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210346997.0A CN114576866A (en) | 2022-04-01 | 2022-04-01 | Gravity heat pipe capable of controlling temperature range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114576866A true CN114576866A (en) | 2022-06-03 |
Family
ID=81779243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210346997.0A Pending CN114576866A (en) | 2022-04-01 | 2022-04-01 | Gravity heat pipe capable of controlling temperature range |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114576866A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116514378A (en) * | 2023-05-10 | 2023-08-01 | 广东维正环保机电工程有限公司 | Constant temperature control system for cooling air of glass tempering line |
-
2022
- 2022-04-01 CN CN202210346997.0A patent/CN114576866A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116514378A (en) * | 2023-05-10 | 2023-08-01 | 广东维正环保机电工程有限公司 | Constant temperature control system for cooling air of glass tempering line |
| CN116514378B (en) * | 2023-05-10 | 2024-01-09 | 广东维正环保机电工程有限公司 | Constant temperature control system for cooling air of glass tempering line |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114576866A (en) | Gravity heat pipe capable of controlling temperature range | |
| CN113587694A (en) | Variable-diameter pulsating heat pipe phase-change heat storage device and heat conduction strengthening method thereof | |
| CN218065395U (en) | Gravity heat pipe capable of controlling temperature range | |
| CN113027713A (en) | Combined geothermal development and utilization system and energy distribution and management method | |
| CN210367707U (en) | Heat pipe integrated fermentation system with uniform heat supply | |
| CN109882911B (en) | Coupled heat pump type heating power station | |
| JP3711382B2 (en) | Hybrid solar temperature converter | |
| CN201184714Y (en) | Multipath expansion etherealization mechanism for heat pump water heater | |
| CN111102866A (en) | Heat pipe capable of synchronously controlling auxiliary phase change | |
| CN215864822U (en) | Variable-diameter pulsating heat pipe phase-change heat storage device | |
| CN100547334C (en) | Two-way heat transfer heat pipe | |
| CN110986400B (en) | Underground energy storage system with double liquid storage cavity structure and control method thereof | |
| CN209214114U (en) | A kind of Waste Heat Reuse heat pump hot-water system | |
| CN107676992B (en) | A kind of solar water heater and application method | |
| CN101943492A (en) | Automatic temperature control solar water heating system | |
| CN2150512Y (en) | Independent self-circulating type radiator fin | |
| CN217358194U (en) | Steam solid heat storage system | |
| CN2839945Y (en) | Ring heat pipe device | |
| CN215597583U (en) | Device for electrochemical air conditioner and air conditioner | |
| CN219159036U (en) | Heat supply steam extraction pipeline energy recovery system of thermal power plant | |
| CN214665538U (en) | High-efficiency energy-saving double-temperature cooling water control system | |
| CN2484530Y (en) | Lithium-bromide absorption type refrigerator suitable for high temp.-difference and capable of fully utilizing energy resource | |
| CN110940214A (en) | Loop heat pipe capable of refrigerating and heating | |
| CN210772864U (en) | Ammonia absorption type refrigerator for food | |
| CN113571807B (en) | Heat management system for liquid cooling and heating of energy storage battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |