CN202793116U

CN202793116U - Power heat pipe system

Info

Publication number: CN202793116U
Application number: CN 201220356006
Authority: CN
Inventors: 祝长宇; 丁式平
Original assignee: Beijing Deneng Hengxin Technology Co Ltd
Current assignee: Beijing Deneng Hengxin Technology Co Ltd
Priority date: 2012-07-23
Filing date: 2012-07-23
Publication date: 2013-03-13
Anticipated expiration: 2022-07-23

Abstract

The utility model discloses a power heat pipe system mainly consisting of a condenser, a gas return device, a circulating pump, an evaporator, a liquid storage tank and a circuit control component. The condenser and the evaporator which form a heat exchanger realizing energy transmission can be directly connected through a pipeline therebetween. A gas inlet end of the gas return device is connected above the liquid level of working medium in the liquid storage tank, and an output end of the gas return device is connected with a gas inlet end of the condenser. The circulating pump is connected between a liquid outlet end of the condenser and a liquid inlet end of the liquid storage tank. The circuit control component controls running states of the system. The power heat pipe system overcomes the defects that gas and liquid separation and circulating power are insufficient in heat pipe heat exchanger equipment by the aid of the liquid storage tank, the gas return device and the circulating pump, and work efficiency and practicality of a heat pipe are improved. In addition, the power heat pipe system is simple in structure and environment-friendly.

Description

A kind of power heat pipe system

Technical field

The utility model relates to technical field of heat exchange, specifically, relates to a kind of novel heat pipe heat exchanging system, particularly a kind of separated heat pipe device with circulating pump.

Background technology

Heat pipe is as high-performance heat transfer components, and the application in engineering is day by day universal.Heat pipe not only is widely used at aspects such as waste heat recovery, electronic devices and components coolings, and in traditional heat and mass apparatus field, the trend that heat pipe has alternative recirculated water, recycle oil and water vapour to conduct heat.When environment temperature was low, heat pipe can also substitute present air-conditioning system, as the heat radiation temp-controlling element of electronic equipment, power equipment, computer floor, communications equipment room.

Heat pipe has the various structures form, and multiple sorting technique is also arranged.Backflow power by liquid-working-medium is classified, and heat pipe can be several large classes such as surface tension heat pipe, gravity assisted heat pipe, centrifugal heat pipe, pulsating heat pipe and power heat pipe.The surface tension withdrawing fluid that the surface tension heat pipe produces liquid by liquid-sucking core; Gravity assisted heat pipe is by gravity reflux liquid; Centrifugal heat pipe is by rotating the centrifugal force withdrawing fluid that produces; Pulsating heat pipe promotes circulation by the expansive force that evaporation produces bubble; The common feature of these heat pipes is that inside heat pipe does not have moving component, and its advantage is simple in structure, is fit to miniaturization, microminiaturization, its shortcoming be circulation power a little less than, be not suitable for high-power, long-distance transmissions heat.

Power heat pipe refers to add the hot-pipe system of circulation driving force, and this driving force is usually expressed as a kind of fluid circulation pump of particular form.The basic structure of power heat pipe comprises evaporimeter, condenser, fluid reservoir, four parts of circulating pump, and they are interconnected to constitute a closed circulation loop, vacuumizes rear adding working media and just consists of a complete power heat pipe.During power heat pipe work, circulating pump is extracted liquid as received basis out from fluid reservoir and is sent into evaporimeter, liquid as received basis is subjected to thermal evaporation to become gas in evaporimeter, the gas as received basis enters condenser by conduit, and cooling condenses into liquid in condenser, liquid working matter flows back to fluid reservoir through catheter again, thereby finishes the heat pipe circulation, and heat flows to the low-temperature heat source of condenser end from the high temperature heat source of evaporator end simultaneously.The advantage of power heat pipe is that circulation power is powerful, is fit to high-power, long-distance transmissions heat.

Under the duty that above-mentioned power heat pipe system wants to realize ideal, its condenser must have good gas-liquid separating function.If the working medium gas-liquid separation is insufficient in condenser, gas working medium will constantly enter fluid reservoir and form accumulation.This phenomenon can cause two kinds of results: the one, if the total gas as received basis volume in the system is less than the fluid reservoir volume, the accumulation of gas working medium in fluid reservoir, finally cause whole gaseous state as received bases all to run up to fluid reservoir, what at this moment flow in circulating pump, evaporimeter, the condenser is single liquid phase working fluid, and whole system forms the liquid-circulating state; Under liquid recurrent state, not evaporation and condensation process, system has not just had the adopting heat pipes for heat transfer function yet, and in case the liquid-circulating state that forms can not recover normal down in working order, only have shutdown more again start could recover normal.The 2nd, if the total gas as received basis volume in the system is greater than the fluid reservoir volume, the accumulation of gas working medium in fluid reservoir, finally cause gaseous working medium to be full of fluid reservoir, at this moment circulating pump will suck gas, and the circulating pump of power heat pipe system is normally for carrying liquid to design, the suction of gas can cause pump pressure sharply to descend, thereby causes circulation power not enough, and causes evaporimeter feed flow difficulty.In order to make condenser have thoroughly gas-liquid separating function, condenser usually adopt diameter larger, parallel with one another, erect calandria structure, this structure radiating efficiency is lower, and volume is larger.In a word, there is the problem of gas-liquid separation difficulty and circulation power deficiency in present power heat pipe.Just because of this, power heat pipe is not promoted application.

Summary of the invention

A kind of novel heat-pipe refrigerating device technique that the utility model provides---a kind of power heat pipe system, the gas-liquid separation that exists when solving the work of current driving force heat pipe exactly is not thoroughly and the problem of circulation power deficiency.

In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is as follows:

A kind of power heat pipe system comprises condenser, evaporimeter, gas-returning devices, circulating pump, fluid reservoir, interconnects pipeline and circuit controling element; The output of described condenser connects fluid reservoir, its both interfaces are positioned on the working media liquid level of fluid reservoir, the evaporimeter input connects fluid reservoir, its both interfaces are positioned under the working media liquid level of fluid reservoir, working media liquid level top in the input access fluid reservoir of gas-returning devices, the input of the output access condenser of gas-returning devices; Circulating pump is installed between fluid reservoir and the condenser, is mainly whole system the power support is provided; Described circuit controling element is being controlled unlatching and the operating condition of circulating pump in the system; During this system works, condenser contacts with low-temperature heat source, gaseous working medium is subjected to the cooling of low-temperature heat source and is condensed into liquid in condenser, and emit heat, the liquid-working-medium that condensation forms is under the drive of circulating pump, they flow out from condenser and enter the fluid reservoir, in fluid reservoir, carry out thoroughly gas-liquid separation, the gaseous state intermediate medium enters into the condenser wireway by gas-returning devices and circulates next time, liquid refrigerant is exported from the evaporimeter input, enter into evaporimeter through the evaporimeter catheter, evaporimeter contacts with high temperature heat source, liquid working media is subjected to the heating of high temperature heat source and is evaporated to gas in evaporimeter, and absorbing heat, the gas that evaporation forms and the liquid intermediate medium that does not partly have to evaporate mix the gaseous refrigerant that forms the gas-liquid two-phase flow body and export by gas-returning devices mutually in flow at high speed, they enter into condenser from the condenser input, so just form a kind of cyclic process of novel energy-conserving heat pipe.

The above gas-returning devices can be a muffler, its input is connected with fluid reservoir, and the position is in the liquid level top of liquid refrigerant in the fluid reservoir, the output of the output of muffler and evaporimeter muffler is connected in the input of condenser wireway by a three-way pipe, the length that this muffler should select fluid reservoir to be complementary to the distance of three-way pipe, its flow has the pipe diameter size of muffler to control, the gaseous refrigerant flow that refluxes through muffler and the total flow that enters the condenser wireway are complementary, realize forming in the whole closed circuit a stable gas-liquid heat exchange circulation.

The above gas-returning devices can be one to flow back to pore, its quantity that comprises the hole can be one or more, the position of return-air hole is on the two-phase flow pipe, distribute successively according to its intraductal working medium flow direction, and the pipe section that is distributed with return-air hole on this matching requirements two-phase flow pipe is positioned at fluid reservoir, its pipeline location is on the top of liquid storage tank level, the flow of the gaseous refrigerant by return-air hole has the number in its hole and the size in aperture to control, the gaseous refrigerant flow that refluxes through return-air hole and the total flow that enters the condenser wireway are complementary, realize forming in the whole closed circuit a stable gas-liquid heat exchange circulation.

The above fluid reservoir is the high-pressure-resistant sealed container that an outer surface is provided with thermal insulation layer, and the function of fluid reservoir is to realize the gas-liquid separation of periodic duty medium and store working media; The fluid reservoir volume size should be complementary with the volume of evaporimeter and condenser, and its volume should be the volume greater than evaporimeter, and less than the total measurement (volume) of the pipeline of evaporimeter, condenser and whole system; The shared volume of intrasystem working media liquid should be the volume greater than evaporimeter, but less than the volume sum of evaporimeter and fluid reservoir; The mode of fluid reservoir realization gas-liquid separation can be selected simple gravity settling separation, also can filter screen or baffle plate be set at evaporimeter and fluid reservoir interface, to realize that silk screen separates or baffling separates.

The above circulating pump should be selected the positive displacement gas-liquid two-phase flow circulating pump that can carry simultaneously gas and liquid, can elect gear pump, lobe pump, screw pump, rotopiston pump or reciprocating piston pump as, gaseous refrigerant and liquid refrigerant can be passed through simultaneously, and can realize the regulating system heat output by regulating pump flow.

Described circuit controling element, mainly be some variations in temperature of monitoring hot environment and low temperature environment by some temperature testing equipments, when surpassing certain value, the temperature difference between hot environment end and the low temperature environment end will automatically control the unlatching of circulating pump, this system has just begun work, when the temperature difference between hot environment end and the low temperature environment end will controlled closing of circulating pump during less than certain value automatically, owing to do not satisfied condition of work, this system just quits work.

The poor problem of high and low position and the cold-producing medium of two heat exchangers are carried problem at a distance in the time of must considering the hot-pipe system operation for existing heat pipe, added transmitting power (circulating pump) in this system, after adding transmitting power, the state operation problem of liquid refrigerant and gaseous refrigerant just is improved, the power of whole heat pipe just no longer is the sort of small power that relies on the gas-liquid self attributes to produce fully of existing heat pipe, but the machine power that circulating pump produces---can make gaseous refrigerant to the motion of pipeline bottom, liquid refrigerant moves to pipeline top; Also solved the problem of heat transmitting range when adding circulating pump, because transmitting power has been arranged, power when this system carries at a distance no longer is to lean on the small pressure reduction that produces when the gaseous state condensing agent evaporates in the system to realize, but the machine power that produces with the circulating pump that adds in the system operates, so when the evaporimeter in the system (temperature end) and condenser (low-temperature end) are distant, also can adopt comparatively energy-conservation thin heat pipe to transmit cold-producing medium.

Add the inefficiency problem that does not thoroughly produce because of gas-liquid separation that occurs behind the circulating pump in order to solve, fluid reservoir and gas-returning devices have been added in this system, by fluid reservoir gas-liquid mixed refrigerant in the system pipeline is filtered, and the gaseous refrigerant after filtering has been got back in the condenser by gas-returning devices, has improved efficiency of heat pipes like this when realizing gas-liquid separation.

The selection of the middle working media that this internal system is filled (system's inner refrigerant), the gas-liquid critical point of working media must remain between the high-temperature region temperature and low-temperature space temperature of operating temperature in the middle of selected, for example when operation temperature area during 30 ° of left and right sides, can be with freon as middle working media, operation temperature area when 100 ° of left and right sides, can water as middle working media; After the intermediate medium of on the other hand working was filled with system, internal system pressure must be higher than an atmospheric pressure, can not enter in the system to guarantee air, caused system damage; The selection of working media must match with the material of making pipeline in the middle of thirdly being, both can not occur and damage mutually phenomenon.

The gas-liquid cold-producing medium separates halfway problem in the existing heat pipe with regard to having solved in design by adding fluid reservoir and fluid reservoir and each equipment adapter problem, improved the circulate heat exchange efficiency in a week of every secondary device, the gas-liquid cycle pump by adding in the system again, operation power is provided for whole hot-pipe system, this is the high and low position poor and fed distance problem of two heat exchangers when having solved the operation of conventional heat pipe system also, thereby reduced the service condition restriction of equipment, increased substantially the heat exchange efficiency of heat pipe.

Description of drawings

Fig. 1 is the simple structure schematic diagram of this system.

Fig. 2 is a simple structure schematic diagram that the muffler of a uniform section is arranged for the gas-returning devices of this system.

Fig. 3 is one to flow back to the simple structure schematic diagram of pore for the gas-returning devices of this system.

Among the figure: (1) condenser; (2) evaporimeter; (3) circulating pump; (4) fluid reservoir; (5) condenser catheter; (6) circulating pump liquid pushing tube; (7) evaporimeter catheter; (8) evaporimeter wireway; (9) condenser wireway; (10) three-way pipe; (11) muffler; (12) two-phase flow pipe; (13) ~ (15) pipe end; (16) return-air hole; (17) gas-returning devices.

The specific embodiment

Also be described further by reference to the accompanying drawings below by embodiment:

The system and device agent structure that present embodiment relates to when realizing comprises condenser (1), evaporimeter (2), circulating pump (3), fluid reservoir (4), condenser catheter (5), circulating pump liquid pushing tube (6), evaporimeter catheter (7), evaporimeter wireway (8), condenser wireway (9), three-way pipe (10), muffler (11), two-phase flow pipe (12), pipe end (13) ~ (15), return-air hole (16) and gas-returning devices (17).

The specific embodiment one

A kind of power heat pipe system as shown in Figure 2, comprise condenser (1), evaporimeter (2), circulating pump (3), fluid reservoir (4), muffler (11), interconnect pipeline and circuit controling element, described circulation delivery side of pump (13) connects fluid reservoir (4), its both interfaces (13) are positioned on the working media liquid level of fluid reservoir (4), evaporimeter input (14) connects fluid reservoir (4), its both interfaces (14) are positioned under the working media liquid level of fluid reservoir (4), the interior working media liquid level of gaseous refrigerant input access fluid reservoir (4) top of muffler (11), the gaseous refrigerant output access condenser wireway (9) of muffler (11); Circulating pump (3) is installed between fluid reservoir (4) and the condenser (1), is mainly whole system the power support is provided; Described circuit controling element is being controlled unlatching and the operating condition of circulating pump in the system (3); During this system works, comprise one by condenser (1), condenser catheter (5), circulating pump (3), circulating pump liquid pushing tube (6), fluid reservoir (4), evaporimeter catheter (7), evaporimeter (2), the systemic circulation that evaporimeter wireway (8) and condenser wireway (9) are connected to form in turn and one are by condenser (1), condenser catheter (5), circulating pump (3), circulating pump liquid pushing tube (6), fluid reservoir (4), the partial circulating that muffler (11) and condenser wireway (9) are connected to form in turn, condenser (1) contacts with low-temperature heat source, gaseous working medium is subjected to the cooling of low-temperature heat source and is condensed into liquid in condenser (1), and emit heat, the liquid-working-medium that condensation forms is under the drive of circulating pump (3), they flow out from condenser (1) and enter the fluid reservoir (4), in fluid reservoir (4), carry out thoroughly gas-liquid separation, the gaseous state intermediate medium enters into condenser wireway (9) by muffler (11) and circulates next time, liquid refrigerant is exported from fluid reservoir (4), enter into evaporimeter (2) through evaporimeter catheter (7), evaporimeter (2) contacts with high temperature heat source, liquid working media is subjected to the heating of high temperature heat source and is evaporated to gas in evaporimeter (2), and absorbing heat, the liquid intermediate medium that the gas that evaporation forms and part do not have to evaporate mixes the gaseous refrigerant that forms the gas-liquid two-phase flow body and export by muffler (11) mutually in flow at high speed, they enter into condenser (1) from condenser wireway (9), so just form a kind of cyclic process of novel energy-conserving heat pipe.

After system's welded and installed is complete, first this system is hunted leak, if find to reveal part, just this system is vacuumized, exhaust after the vacuum just to its inner adding cold-producing medium, the preliminary preparation of system has been finished like this.

When the hot environment end did not reach the required environment of system works than the low temperature environment end temperature scope that differs, circuit controling element was closed circulating pump (3) by the signal that temperature detection part spreads out of, and this system is in halted state; When the hot environment end exceeds certain value than low temperature environment end temperature, partly detect signal by detected temperatures in the circuit control, to control circulating pump (3) by control circuit again and automatically opening, whole system just is in normal operating condition.

The course of work of this system is a kind of desirable duty, can only be the high temperature energy band to the low temperature place, can not remove cryogenic energy to the high temperature place, and the job specification that system installs post-condenser (1) and evaporimeter (2) can not change, and can only be sent to low-temperature space to the heat in single place.

The specific embodiment two

Fig. 3 is on the basis of a kind of power heat pipe shown in Figure 2 system, gas-returning devices (17) is one to flow back to pore (16), the position of return-air hole (16) is in two-phase flow pipe (12) and upward distributes successively by the intraductal working medium flow direction, and the pipe section that is distributed with return-air hole on this matching requirements two-phase flow pipe (12) is in the fluid reservoir (4), its position is liquid level top in fluid reservoir (4), the gaseous state intermediate medium cooled via return air hole (16) that gas-liquid separation goes out in fluid reservoir (4) is back to two-phase flow pipe (12) and enters at last condenser (1) and circulate next time, and miscellaneous part is identical with the specific embodiment one.

Claims

1. a power heat pipe system comprises condenser (1), evaporimeter (2), wireway, catheter and circuit controling element, it is characterized in that, also comprises gas-returning devices (17), circulating pump (3), fluid reservoir (4) three parts; Described circulation delivery side of pump (13) connects fluid reservoir (4), its both interfaces (13) are positioned on the working media liquid level of fluid reservoir (4), evaporimeter input (14) connects fluid reservoir (4), its both interfaces (14) are positioned under the working media liquid level of fluid reservoir (4), the interior working media liquid level of input access fluid reservoir (4) top of gas-returning devices (17), output access condenser (1) input of gas-returning devices (17); Circulating pump (3) is installed between fluid reservoir (4) and the condenser (1), is mainly whole system the power support is provided; Described circuit controling element is being controlled unlatching and the operating condition of circulating pump in the system (3); During this system works, condenser (1) contacts with low-temperature heat source, gaseous working medium is subjected to the cooling of low-temperature heat source and is condensed into liquid in condenser (1), and emit heat, the liquid-working-medium that condensation forms is under the drive of circulating pump (3), they flow out from condenser (1) and enter the fluid reservoir (4), in fluid reservoir (4), carry out thoroughly gas-liquid separation, the gaseous state intermediate medium enters into condenser wireway (9) by gas-returning devices (17) and circulates next time, liquid refrigerant is exported from evaporimeter input (14), enter into evaporimeter (2) through evaporimeter catheter (7), evaporimeter (2) contacts with high temperature heat source, liquid working media is subjected to the heating of high temperature heat source and is evaporated to gas in evaporimeter (2), and absorbing heat, the liquid intermediate medium that the gas that evaporation forms and part do not have to evaporate mixes the gaseous refrigerant that forms the gas-liquid two-phase flow body and export by gas-returning devices (17) mutually in flow at high speed, they enter into condenser (1) from condenser (1) input, so just form a kind of cyclic process of novel energy-conserving heat pipe.

2. a kind of power heat pipe according to claim 1 system, it is characterized in that, described gas-returning devices (17) can be a muffler (11), its input (15) is connected with fluid reservoir (4), and the position is in the liquid level top of the interior liquid refrigerant of fluid reservoir (4), and the output of the output of muffler (11) and evaporimeter wireway (8) is connected in the input of condenser wireway (9) by a three-way pipe (10).

3. a kind of power heat pipe according to claim 2 system, it is characterized in that, described gas-returning devices (17) can be a muffler (11), controlled the flow of gaseous refrigerant by the pipe diameter size of muffler (11), the gaseous refrigerant flow that refluxes through muffler (11) and the total flow that enters the condenser muffler are complementary, realize forming in the whole closed circuit a stable gas-liquid heat exchange circulation.

4. a kind of power heat pipe according to claim 1 system, it is characterized in that, described gas-returning devices (17) can be one to flow back to pore (16), its quantity that comprises the hole can be one or more, the position of return-air hole (16) is in two-phase flow pipe (12) and upward distributes successively by the intraductal working medium flow direction, and the pipe section that is distributed with return-air hole on this matching requirements two-phase flow pipe (12) is in the fluid reservoir (4), and its position is liquid level top in fluid reservoir (4).

5. a kind of power heat pipe according to claim 4 system, it is characterized in that, described gas-returning devices (17) can be one to flow back to pore (16), controlled the flow of gaseous refrigerant by the size in the quantity of return-air hole (16) and aperture, the gaseous refrigerant flow that refluxes through return-air hole (16) and the total flow that enters the condenser wireway are complementary, realize forming in the whole closed circuit a stable gas-liquid heat exchange circulation.

6. a kind of power heat pipe according to claim 1 system, it is characterized in that, described fluid reservoir (4) is the high-pressure-resistant sealed container that an outer surface is provided with thermal insulation layer, and the function of fluid reservoir (4) is to realize the gas-liquid separation of periodic duty medium and store working media; Fluid reservoir (4) volume size should be complementary with the volume of evaporimeter (2) and condenser (1), and its fluid reservoir volume should be the volume greater than evaporimeter (2), and less than the total measurement (volume) of the pipeline of evaporimeter (2), condenser (1) and whole system; The shared volume of intrasystem working media liquid should be the volume greater than evaporimeter (2), but less than the volume sum of evaporimeter (2) with fluid reservoir (4); The mode of fluid reservoir (4) realization gas-liquid separation can be selected simple gravity settling separation, also can locate to arrange filter screen or baffle plate at evaporimeter (2) and fluid reservoir (4) interface (13), to realize that silk screen separates or baffling separates.

7. a kind of power heat pipe according to claim 1 system, it is characterized in that, described circulating pump (3) is selected the positive displacement gas-liquid two-phase flow circulating pump that can carry simultaneously gas and liquid, gaseous refrigerant and liquid refrigerant can be passed through simultaneously, and can realize the regulating system heat output by regulating pump flow.