CN104457349A - Separation type heat pipe heat exchanger - Google Patents

Separation type heat pipe heat exchanger Download PDF

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Publication number
CN104457349A
CN104457349A CN201310442715.8A CN201310442715A CN104457349A CN 104457349 A CN104457349 A CN 104457349A CN 201310442715 A CN201310442715 A CN 201310442715A CN 104457349 A CN104457349 A CN 104457349A
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CN
China
Prior art keywords
valve
liquid return
port
section
return tube
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
Application number
CN201310442715.8A
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Chinese (zh)
Inventor
王坤
王金平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU QIZHENG NEW ENERGY CO Ltd
Original Assignee
JIANGSU QIZHENG NEW ENERGY CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JIANGSU QIZHENG NEW ENERGY CO Ltd filed Critical JIANGSU QIZHENG NEW ENERGY CO Ltd
Priority to CN201310442715.8A priority Critical patent/CN104457349A/en
Publication of CN104457349A publication Critical patent/CN104457349A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00Heat-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
    • F28D15/02Heat-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
    • F28D15/0266Heat-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

Abstract

The invention discloses a separation type heat pipe heat exchanger which comprises an evaporation section and a condensation section. The evaporation section is of an S-shaped bent pipeline, the condensation section is a cavity above the evaporation section, the evaporation section is communicated with the condensation section through a steam uplink pipe and a liquid backflow pipe, the middle of the steam uplink pipe is provided with an uplink three-way check valve which divides the steam uplink pipe into a steam uplink pipe upper section and a steam uplink pipe lower section, the middle of the liquid backflow pipe is provided with a downlink three-way check valve which divides the liquid backflow pipe into a liquid backflow pipe upper section and a liquid backflow pipe lower section, and the port of the steam uplink pipe upper section is higher than that of the liquid backflow pipe upper section. The separation type heat pipe heat exchanger has the gas and liquid separation function, is high in heat transfer speed, and has the advantages of preventing heat exchange temperature from being too high and being easy to maintain.

Description

A kind of separate type heat pipe exchanger
Technical field
The present invention relates to a kind of heat-exchanger rig, relate to a kind of separate type heat pipe exchanger particularly.
Background technology
Patent name " serpentine configuration separate heat pipe heat-exchange system " (application number: 200720036571.6) propose a kind of heat exchanger, evaporator section and condensation segment are designed to the pipeline of serpentine bend by this heat exchanger, to reduce the volume of heat-exchange system, evaporator section is positioned at below condensation segment, evaporator section outlet is connected with condensation segment entrance by vapor uptake, and condensation segment outlet is connected with evaporator section entrance by liquid return tube.There are following three shortcomings in this technology: when (1) medium condenses section is run, owing to being condensation gradually, therefore there is the bubble flow situation of gas-liquid mixed in condensation segment, this state is unfavorable for heat transfer, and medium is when flowing back to evaporator section from liquid return tube, also can there is the situation of bubble flow, cause heat absorption speed to reduce.(2) evaporator section is identical with the version of condensation segment, is not suitable for the low heat flow density input of large area, the situation that small size high heat flux exports.(3) this device does not have heat transferring medium flow controlling mechanism, cannot limit the heat-exchange temperature of heat exchanger, is not suitable for the situation that some needs to control condensation segment temperature.
Summary of the invention
Goal of the invention: the object of the invention is to solve the problems of the technologies described above, provides a kind of and has gas-liquid separating function, can limit the separate type heat pipe exchanger that heat-exchange temperature is easy to maintenance.
Technical scheme: a kind of separate type heat pipe exchanger of the present invention, comprise evaporator section and condensation segment, described evaporator section is the pipeline of serpentine bend, described condensation segment is a cavity being positioned at above evaporator section, described evaporator section is connected with described condensation segment with liquid return tube by steam ascending tube, in the middle of steam ascending tube, up three-way cut-off valve is set and steam ascending tube is divided into steam ascending tube epimere and steam ascending tube hypomere, in the middle of liquid return tube, descending three-way cut-off valve is set and liquid return tube is divided into liquid return tube epimere and liquid return tube hypomere, described steam ascending tube epimere port is higher than described liquid return tube epimere port.
Preferably, described up three-way cut-off valve comprises upper port, lower port, switch port and vacuumizes mouth, and described switch port vacuumizes mouth and is connected with steam ascending tube epimere after closing.
Preferably, described descending three-way cut-off valve comprises upper port, lower port, switch port and vacuumizes mouth, and described switch port vacuumizes mouth and is connected with liquid return tube hypomere after closing.
Preferably, described liquid return tube epimere is also provided with temperature control choke valve, and described temperature control choke valve is provided with a temperature probe.
Preferably, described steam ascending tube epimere stretches into condensation section cavity top, and described liquid return tube epimere port is equal with bottom condensation section cavity.
Preferably, the shape of described condensation section cavity is the one in cuboid, cylinder, spheroid and cone.
Steam ascending tube is divided into two sections by up three-way cut-off valve, steam ascending tube epimere stretches into the inside cavity of condensation segment, port part is close to condensation section cavity top, ensure that adding volume is after the medium of the amount of evaporator section volume, steam ascending tube upper end oral area was not had, and steam ascending tube hypomere exports with evaporator section and is connected.Temperature control choke valve is connected with descending three-way cut-off valve, temperature control choke valve is above descending three-way cut-off valve, and with temperature control choke valve and descending three-way cut-off valve for boundary, liquid return tube is also divided into two sections, liquid return tube epimere stretches into condensation section cavity inside, and port part is equal with bottom condensation section cavity.Descending three-way cut-off valve lower end is connected with evaporator section entrance by liquid return tube hypomere.Temperature control choke valve has a temperature probe, is placed near condensation segment, and for detecting condensation segment temperature, temperature probe temperature is higher, and the perforate of temperature control choke valve is less, and after reaching uniform temperature, the perforate of temperature control choke valve can be closed completely, blocks circulation.The feature of up three-way cut-off valve is that after closing, vacuumizing mouth can only be communicated with condensation segment direction, and the feature of descending three-way cut-off valve is that after closing, vacuumizing mouth can only be communicated with evaporator section direction.
The assembling mode of a kind of separate type heat pipe exchanger of the present invention is: condensation segment and steam ascending tube epimere and liquid return tube epimere are welded as a whole, up three-way cut-off valve is arranged on the lower port of steam ascending tube epimere, temperature control choke valve is arranged on the lower port of liquid return tube hypomere, descending three-way cut-off valve is arranged on the lower end of temperature control choke valve; Steam ascending tube hypomere is exported with up three-way cut-off valve and evaporator section and is connected, liquid return tube hypomere is connected with descending three-way cut-off valve and evaporator section import.Up three-way cut-off valve and descending three-way cut-off valve are closed, utilizes air pump to suppress condensation segment, pressurize, do air-tight test, ensure sealing, then vacuumize.Open descending three-way cut-off valve, utilize vavuum pump from descending three-way cut-off valve to condensation segment suction heat-conducting medium, suction medium is complete, closes descending three-way cut-off valve.Vacuumize from the mouth that vacuumizes of descending three-way cut-off valve evaporator section, after this open descending three-way cut-off valve and up three-way cut-off valve successively, heat exchanger can normally work.
There is other impurity owing to may exist in system media leak case or medium in operation, after using a period of time, system needs to carry out adding media protection or vacuumizing maintenance sometimes.The dielectric method that adds of a kind of separate type heat pipe exchanger of the present invention is: closed by descending three-way cut-off valve, and keeping system continues to run a period of time, utilizes the pressure of evaporator section to make medium all enter condensation segment, closes up three-way cut-off valve.Liquid return tube hypomere and descending three-way cut-off valve are separated, vavuum pump is vacuumized mouth with up three-way cut-off valve be connected, open descending three-way cut-off valve, from descending three-way cut-off valve lower port to condensation segment suction heat-conducting medium, suction medium is complete, closes descending three-way cut-off valve.
The vacuum pumping method of a kind of separate type heat pipe exchanger of the present invention is: closed by descending three-way cut-off valve, and keeping system continues to run a period of time, utilizes the pressure of evaporator section to make medium all enter condensation segment, closes up three-way cut-off valve.From the mouth that vacuumizes of descending three-way cut-off valve, evaporator section is vacuumized, from the mouth that vacuumizes of up three-way cut-off valve, condensation segment is vacuumized.
Beneficial effect:
(1) condensation segment of a kind of separate type heat pipe exchanger of the present invention is a cavity, because steam ascending tube epimere port is close to condensation section cavity top, liquid return tube epimere port is bottom condensation section cavity, liquid after medium condenses will realize gas-liquid separation at condensation segment, and liquid preferentially refluxes.So just achieve and the bubble flow condensation heat transfer of condensation segment is become saturated gas condensation heat transfer and saturated liquid forced convection heat transfer, liquid is preferentially back to evaporator section simultaneously, make evaporator section opening portion also become liquid forced convection heat transfer, improve the heat-transfer capability of heat exchanger system.Space between condensation segment and steam ascending tube epimere port can hold foreign gas, prevents gas from blocking up.
(2) make condensation segment heat release area much smaller than evaporator section endotherm area by design, can realize the low heat flow density input of large area, small size high heat flux exports.
(3) on liquid return tube, be designed with a temperature control choke valve, controlled the size of temperature control choke valve perforate by condensation segment temperature, thus the fluid temperature realized backflow and stream quantitative limitation.Condensation segment temperature reaches design temperature, and temperature control choke valve cuts out, and realizes the object of restriction heat-exchange temperature.
(4) increase design up three-way cut-off valve and a descending three-way cut-off valve on heat exchangers, can easily system be vacuumized, in maintenance process afterwards, also can add medium easily or extract foreign gas out.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of the embodiment of the present invention;
Fig. 3 is the structural representation of the up three-way cut-off valve of the present invention.
In figure, 1-evaporator section 2-condensation segment 3-snake pipe 4-steam ascending tube epimere 5-up three-way cut-off valve 51-upper port 52-switch port 53-vacuumizes mouth 54-lower port 6-steam ascending tube hypomere 7-liquid return tube epimere 8-temperature control choke valve 9-descending three-way cut-off valve 10-liquid return tube hypomere 11-temperature probe 12-solar thermal collector 13-heat storage water tank 14-water inlet pipe 15-outlet pipe 16-thermometric blind pipe.
Detailed description of the invention
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment only for explaining the present invention, does not form limiting the scope of the present invention.
Embodiment
See Fig. 1, a kind of separate type heat pipe exchanger, comprise evaporator section 1 and condensation segment 2, evaporator section 1 is the pipeline of serpentine bend, condensation segment 2 is a cavity being positioned at above evaporator section, evaporator section 1 is connected with condensation segment 2 with liquid return tube by steam ascending tube, in the middle of steam ascending tube, up three-way cut-off valve 5 is set and steam ascending tube is divided into steam ascending tube epimere 4 and steam ascending tube hypomere 6, in the middle of liquid return tube, descending three-way cut-off valve 9 is set and liquid return tube is divided into liquid return tube epimere 7 and liquid return tube hypomere 10, steam ascending tube epimere 4 port is higher than liquid return tube epimere 7 port.Liquid return tube epimere 7 is also provided with temperature control choke valve 8, temperature control choke valve 8 is provided with a temperature probe 11.Steam ascending tube epimere stretches into condensation section cavity top, and described liquid return tube epimere port is equal with condensation segment 2 cavity bottom.The shape of condensation section cavity is cylinder.
See Fig. 1 and Fig. 2, evaporator section 1 can be combined with coiled pipe flat-plate solar collector or U-tube solar thermal collector, by the snakelike metal tube of coiled pipe flat-plate solar collector or U-tube solar thermal collector as evaporator section 1.Condensation segment 2 and heat storage water tank 13 are combined as a whole, and are positioned over heat storage water tank 13 inner, and are placed in bottom inner bag, be bolted or be welded as a whole with inner bag by condensation segment 2.Inner at heat storage water tank 13, be designed with a thermometric blind pipe 16 near condensation segment 2, the temperature probe 11 of temperature control choke valve 8 is placed in thermometric blind pipe 16, for detecting the water temperature near condensation segment 2.
See Fig. 3, up three-way cut-off valve comprises upper port 51, lower port 54, switch port 52 and vacuumizes mouth 53, and switch port 52 vacuumizes mouth and is connected with condensation segment pipeline after closing.Same, descending three-way cut-off valve also comprises upper port, lower port, switch port and vacuumizes mouth, and switch port vacuumizes mouth and is connected with evaporator section pipeline after closing.
Under off working state, heat-conducting medium under gravity, will concentrate on evaporator section 1 inner.When work starts, evaporator section 1 absorbs heat, dielectric heating is evaporated, become gas, first gaseous medium enters condensation segment 2 from steam ascending tube and liquid return tube simultaneously, condensed liquid medium influent return duct, and the head of liquid of generation will make gaseous medium can only enter condensation segment 2 from steam ascending tube, enter evaporator section 1 from liquid return tube again, namely form one-way circulation.Due to the design of condensation segment 2, make medium produce gas-liquid separation, the liquid medium after separation preferentially refluxes, and ensures that heat exchanger there will not be adverse current disorderly, and only has liquid during backflow.The liquid of backflow, after the throttling cooling of temperature control choke valve 8 enters evaporator section 1, carries out forced convection heat transfer.Temperature control choke valve 8 monitors the water temperature near condensation segment 2 by temperature probe 11, and after reaching design temperature, temperature control choke valve 8 can cut out, restriction heat-exchange temperature.
Owing to may there is foreign gas or system existence leakage in medium, after using a period of time, system needs to carry out vacuumizing safeguard or add media protection sometimes.When system cloud gray model, closed by descending three-way cut-off valve 9, medium accumulates in condensation segment 2.When system no longer circulation time after a period of time, close up three-way cut-off valve 5, medium all remains in condensation segment 2.Now can vacuumize evaporator section 1 from the mouth that vacuumizes of descending three-way cut-off valve 9, also can vacuumize evaporator section 1 from the mouth that vacuumizes of up three-way cut-off valve 5.To outward winding descending three-way cut-off valve 9 and the connection of liquid return tube hypomere 10, from descending three-way cut-off valve 9 by medium suction condensation segment 2, medium can be supplemented to system.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (6)

1. a separate type heat pipe exchanger, comprise evaporator section and condensation segment, it is characterized in that, described evaporator section is the pipeline of serpentine bend, described condensation segment is a cavity being positioned at above evaporator section, described evaporator section is connected with described condensation segment with liquid return tube by steam ascending tube, in the middle of steam ascending tube, up three-way cut-off valve is set and steam ascending tube is divided into steam ascending tube epimere and steam ascending tube hypomere, in the middle of liquid return tube, descending three-way cut-off valve is set and liquid return tube is divided into liquid return tube epimere and liquid return tube hypomere, described steam ascending tube epimere port is higher than described liquid return tube epimere port.
2. a kind of separate type heat pipe exchanger according to claim 1, it is characterized in that, described up three-way cut-off valve comprises upper port, lower port, switch port and vacuumizes mouth, and described switch port vacuumizes mouth and is connected with steam ascending tube epimere after closing.
3. a kind of separate type heat pipe exchanger according to claim 1, it is characterized in that, described descending three-way cut-off valve comprises upper port, lower port, switch port and vacuumizes mouth, and described switch port vacuumizes mouth and is connected with liquid return tube hypomere after closing.
4. according to a kind of separate type heat pipe exchanger in claim 1 described in any one, it is characterized in that, described liquid return tube epimere is also provided with temperature control choke valve, and described temperature control choke valve is provided with a temperature probe.
5. according to a kind of separate type heat pipe exchanger in claim 1 described in any one, it is characterized in that, described steam ascending tube epimere stretches into condensation section cavity top, and described liquid return tube epimere port is equal with bottom condensation section cavity.
6. a kind of separate type heat pipe exchanger according to claim 1, is characterized in that, the shape of described condensation section cavity is the one in cuboid, cylinder, spheroid and cone.
CN201310442715.8A 2013-09-25 2013-09-25 Separation type heat pipe heat exchanger Pending CN104457349A (en)

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CN201310442715.8A CN104457349A (en) 2013-09-25 2013-09-25 Separation type heat pipe heat exchanger

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Application Number Priority Date Filing Date Title
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CN104457349A true CN104457349A (en) 2015-03-25

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107478080A (en) * 2017-08-15 2017-12-15 成都康宇医用设备工程有限公司 A kind of cold pipe of loop
CN109690222A (en) * 2016-09-09 2019-04-26 株式会社电装 Device temperature regulating device
CN111328247A (en) * 2020-03-03 2020-06-23 北京百度网讯科技有限公司 Phase change cooling system

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CN103267327A (en) * 2013-05-28 2013-08-28 江苏七政新能源有限公司 Natural-circulation cooling device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2076134A (en) * 1980-03-31 1981-11-25 Foster Wheeler Power Prod Combustion air preheater
CN1224830A (en) * 1998-01-26 1999-08-04 于兆范 Separating heat pipe heating system
CN2690804Y (en) * 2004-04-27 2005-04-06 朱德永 Separate type hot pipe flat plate solar water heater
CN2929580Y (en) * 2006-06-09 2007-08-01 杨清明 Combined tube split solar water heater
CN202494186U (en) * 2012-03-08 2012-10-17 中环清新人工环境工程技术(北京)有限责任公司 Heat-pipe heat exchange equipment for machine room
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109690222A (en) * 2016-09-09 2019-04-26 株式会社电装 Device temperature regulating device
CN109690222B (en) * 2016-09-09 2020-07-03 株式会社电装 Equipment temperature adjusting device
CN107478080A (en) * 2017-08-15 2017-12-15 成都康宇医用设备工程有限公司 A kind of cold pipe of loop
CN111328247A (en) * 2020-03-03 2020-06-23 北京百度网讯科技有限公司 Phase change cooling system
CN111328247B (en) * 2020-03-03 2022-11-11 北京百度网讯科技有限公司 Phase change cooling system

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Application publication date: 20150325