CN209485095U - Step foamed ceramics enhanced boiling heat transfer device - Google Patents

Abstract

The utility model discloses step foamed ceramics enhanced boiling heat transfer device, including energy supply component, monitor component, level-one heat exchange cylinder and secondary heat exchange cylinder；The current output terminal of the energy supply component is electrically connected with the current input terminal of the monitor component；The monitor component is mounted on the outer wall or upper bottom surface of the level-one heat exchange cylinder and the secondary heat exchange cylinder；Foamed ceramics layer is equipped in the inside of level-one heat exchange cylinder.The utility model foamed ceramics is the porous ceramic bodies with the high porosity of three-dimensional space grid structure, since it has the porosity height, large specific surface area, anti-thermal shock, high temperature resistant, resistant to chemical etching and good mechanical strength and filters absorption property.Novelty proposes to enhance the disturbance of gas in a liquid, enhanced heat exchange, raising heat exchange efficiency using these characteristics of foamed ceramics.

Description

Step foamed ceramics enhanced boiling heat transfer device

Technical field

The utility model relates to technical field of heat exchangers.Specifically step foamed ceramics enhanced boiling heat transfer device.

Background technique

Heat exchanger is the equipment that the partial heat of hot fluid is passed to cold fluid, also known as heat exchanger.Heat exchanger conduct One energy-saving equipment, heat exchanger are to realize heat transfer between material between a kind of fluid at two or more different temperatures Heat exchanger energy-saving equipment, be that heat is made to pass to the lower fluid of temperature by the higher fluid of temperature, reach fluid temperature (F.T.) The index of flow specification to meet the needs of process conditions, while being also one of the capital equipment for improving energy utilization rate.Extensively For most energy utilization systems, led in the industry such as petroleum, chemical industry, metallurgy, medicine, food, the energy, power and refrigeration Domain occupies an important position, and is the common apparatus in these fields.The quality of heat exchanger heat exchange efficiency is directly related to system energy benefit With the height of efficiency.Therefore, the key factor for improving efficiency of energy utilization is exactly to promote heat exchanger performance.Now, people exist How research carries out augmentation of heat transfer, how reasonably to select heat exchanger and optimizes, proposes a variety of different reinforcing skills Art improves the performance of heat exchanger, improves efficiency of energy utilization with this.

Heat exchanger both can be used as a kind of unit and work, such as condenser, cooler, heater etc.；It can also Evaporator and condenser, ammonia synthesis to be the component part of some equipment, such as in refrigerated air-conditioning system in refrigeration unit Heat exchanger etc. in tower.The quality of heat exchanger performance is measuring product quality, system economy and stability and energy utilization Rate plays of crucial importance or even conclusive effect.In Chemical Manufacture process, the investment of heat exchanger accounts for about equipment gross investment 30% or so；During running oil, the shared ratio of heat exchange equipment investment is higher, accounts for about 40% or so；And seawater is light Heat exchanger investment almost occupies whole positions in chemical industry process and equipment.Heat exchanger as unit important in Chemical Manufacture not Only occupy very big ratio in investment, its tonnage probably accounts for the 20% or higher of entire process equipment, so heat exchange The importance of device as one can imagine.

Heat exchangers have dividing wall type heat exchanger, heat regenerator, fluidly connect indirect type heat exchanger, direct contact type Heat exchanger, composite heat exchanger.The heat conversion for improving heat exchanger is one of the main method for improving energy utilization rate, at this stage The problems such as that there are heat exchange efficiencies is low for heat exchanger, and heat exchanger internal structure is easy fouling and blocking.

Utility model content

For this purpose, that the technical problem to be solved by the utility model is to a kind of is strong using the step foamed ceramics of foamed ceramics Change boiling heat exchanger.

In order to solve the above technical problems, the utility model provides the following technical solutions:

Step foamed ceramics enhanced boiling heat transfer device, including energy supply component, monitor component, level-one heat exchange cylinder and secondary heat exchange Cylinder；The current output terminal of the energy supply component is electrically connected with the current input terminal of the monitor component；The monitor component installation On the outer wall or upper bottom surface of level-one heat exchange cylinder and the secondary heat exchange cylinder；The upper bottom surface of level-one heat exchange cylinder is equipped with the One end of one ventilation pipe, first ventilation pipe through level-one heat exchange cylinder upper bottom surface and extends to the level-one heat exchange Bottom in cylinder, first ventilation pipe and level-one heat exchange cylinder fluid communication；On the upper bottom surface of the level-one heat exchange cylinder Gas flow outlet and the second ventilation pipe gas flow into end fluid communication, the second ventilation pipe gas outflow end run through institute The upper bottom surface of secondary heat exchange cylinder, and the gas input fluid communication with the spiral coil of the inside of the secondary heat exchange cylinder are stated, Gas in the spiral coil passes through the gas working medium effuser outflow through the secondary heat exchange cylinder upper bottom surface；It is described The liquid of liquid flowing outlet and aqueduct on secondary heat exchange cylinder lower sides flows into end fluid communication, the aqueduct The liquid inflow port fluid communication of the upper bottom surface of liquid outlet and level-one heat exchange cylinder；The bottom side of the level-one heat exchange cylinder Wall is equipped with water outlet；Foamed ceramics layer, the outlet side of first ventilation pipe are equipped in the inside of level-one heat exchange cylinder Positioned at the lower section of the foamed ceramics layer.

Above-mentioned step foamed ceramics enhanced boiling heat transfer device, the foamed ceramics layer are parallel to level-one heat exchange cylinder bottom face And its quantity is two or more.

Above-mentioned step foamed ceramics enhanced boiling heat transfer device, the gas of first ventilation pipe flow into end and are connected with switch Valve module；The switch valve module includes valve body and handle；The valve body is three-port structure: being set on a side of the valve body Have working medium entrances pipe, on the side of the valve body opposite with the working medium entrances pipe be equipped with the second sender property outlet pipe, with The vertical side of valve body in side where the working medium entrances pipe and the second sender property outlet pipe is equipped with the first working medium Outlet；The valve inner is equipped with switch hemisphere, and the switch hemisphere is fixedly connected with the handle, and the switch hemisphere exists It is rotated in the valve body under the driving of the handle；The gas of working medium entrances and the working medium entrances pipe flows into end fluid and leads Logical, the gas outflow end of the working medium entrances pipe and the gas of the valve body flow into end fluid communication, the gas stream of the valve body The inflow end fluid communication of outlet and the second sender property outlet pipe, the outflow end of the second sender property outlet pipe and described first The gas of ventilation pipe flows into end fluid communication, another gas outflow end and the first sender property outlet pipe of the valve body End fluid communication is flowed into, the outflow end of the first sender property outlet pipe is connected with ambient atmosphere.

The pipeline inside of above-mentioned step foamed ceramics enhanced boiling heat transfer device, first ventilation pipe is described equipped with preventing Level-one exchange heat cylinder interior liquid reflux back-flow preventer, the back-flow preventer include first baffle, second baffle, spring and Support plate；The support plate is fixed in the inner wall of the pipe of first ventilation pipe；The lower end of the spring and the support The upper bottom surface of plate is fixedly connected；The upper end of the spring is fixedly connected with the bottom surface of the second baffle；The first baffle It is fixed in the inner wall of the pipe of first ventilation pipe, the first baffle is cirque structure；The second baffle is located at Below the first baffle, the diameter of the second baffle is less than the diameter of the first baffle large circle and is greater than described first The diameter of baffle small circle ring；The support plate is equipped with the through-hole through the support plate.

Above-mentioned step foamed ceramics enhanced boiling heat transfer device is equipped with inlet water divider, institute in level-one heat exchange cylinder interior Stating inlet water divider is the cylinder-like structure with water storage cavity；Bottom on the upper end of the cylinder-like structure and level-one heat exchange cylinder The inner wall in face is welded and fixed；The bottom surface of the cylinder-like structure and side are equipped with the leakage hole with water storage cavity fluid communication； Water storage cavity fluid communication inside the liquid outlet of the aqueduct and the inlet water divider；Liquid in the water storage cavity Body is connected by leakage hole with level-one heat exchange cylinder cavity fluid；Exhaust is equipped on the upper bottom surface of the secondary heat exchange cylinder Hole.

Above-mentioned step foamed ceramics enhanced boiling heat transfer device, energy supply component includes solar energy photovoltaic panel and battery；It is described too The current output terminal of positive energy photovoltaic panel is electrically connected with the current input terminal of the battery；The output end of the battery and the monitoring The current input terminal of component is electrically connected.

Above-mentioned step foamed ceramics enhanced boiling heat transfer device, the monitor component include control centre, electromagnetic valve, temperature Sensor, level-one heat exchange cylinder level switch, electromagnetic flow valve, the first level switch of secondary heat exchange cylinder, secondary heat exchange cylinder the Two level switch and small water pump；The control centre is located on the upper bottom surface of level-one heat exchange cylinder；The electromagnetic flow valve Positioned at it is described switch valve module the second sender property outlet pipe and first ventilation pipe between, and with second working medium Outlet and the first ventilation pipe fluid communication；The electromagnetic valve is fixedly mounted on the water outlet；The temperature Sensor is mounted on the lower sides of the level-one heat exchange cylinder；The level-one heat exchange cylinder level switch is mounted on the level-one In the cylinder upper portion side wall that exchanges heat；First level switch of secondary heat exchange cylinder is mounted on the middle part of sliding channel of the secondary heat exchange cylinder On；Second level switch of secondary heat exchange cylinder is mounted in the upper portion side wall of the secondary heat exchange cylinder；The small water pump peace On the lower sides of the secondary heat exchange cylinder, and the liquid flowing outlet of the secondary heat exchange cylinder lower sides is by described small The liquid of water pump and aqueduct flows into end fluid communication；The signal output end of the control centre respectively with the small water pump, The communication connection of the signal input part of the electromagnetic valve and the electromagnetic flow valve；The signal input part of the control centre is distinguished With the temperature sensor, level-one heat exchange cylinder level switch, first level switch of secondary heat exchange cylinder and described The signal output end of the second level switch of secondary heat exchange cylinder connects.

Above-mentioned step foamed ceramics enhanced boiling heat transfer device, first level switch of secondary heat exchange cylinder are mounted on described On the side wall of secondary heat exchange cylinder, and it is identical as the lower end height of the spiral coil；Second water level detecting of secondary heat exchange cylinder Device is mounted in the upper portion side wall of the secondary heat exchange cylinder, and identical as the upper end level of the spiral coil.

Above-mentioned step foamed ceramics enhanced boiling heat transfer device carries out thickening in the pipe bent position of first ventilation pipe and sets It sets.

The technical solution of the utility model achieves following beneficial technical effect:

1. novelty proposes to be reduced intermediate heat process with the heat-exchange method of biphase gas and liquid flow direct contact heat transfer, mentioned High heat transfer effect.

2. designing gas reversing arrangement switchs valve module, gas flow direction can be changed at any time, control heat exchanger works, Without the gas work before influence gas reversing arrangement.

3. design has back-flow preventer in ventilation pipe, it can effectively prevent the intracorporal liquid of chamber from flowing back along snorkel.

4. foamed ceramics is the porous ceramic bodies with the high porosity of three-dimensional space grid structure, since it has stomata Rate height, large specific surface area, anti-thermal shock, high temperature resistant, resistant to chemical etching and good mechanical strength and filtering absorption property.It is innovative It proposes to enhance the disturbance of gas in a liquid using these characteristics of foamed ceramics, enhanced heat exchange improves heat exchange efficiency.

5. being exchanged heat using step, that is, it is provided with level-one heat exchange cylinder and secondary heat exchange cylinder, obtains the heat in gas sufficiently Utilization, improve the utilization rate of heat.

6. using the Multistage Control of electromagnetic valve, multiple level switch, it is ensured that fluid outflow temperature is in specified range.

7. the heat exchanger of the utility model can realize the function that heating air-blowing is disposably completed, the drum of later period membrane distillation is reduced Gas process.

8. the use solar energy power generating of the heat exchanger of the utility model provides and equipped with battery, extra electricity is stored up It deposits to ensure that equipment can be in unglazed or few luminous environment work.

Detailed description of the invention

The schematic diagram of the section structure of Fig. 1 the utility model step foamed ceramics enhanced boiling heat transfer device；

The switch valve component structure diagram of Fig. 2 the utility model step foamed ceramics enhanced boiling heat transfer device；

The structural schematic diagram of the switch hemisphere of Fig. 3 the utility model step foamed ceramics enhanced boiling heat transfer device；

The back-flow preventer structural schematic diagram of Fig. 4 the utility model step foamed ceramics enhanced boiling heat transfer device；

The inlet water divider structural schematic diagram of Fig. 5 the utility model step foamed ceramics enhanced boiling heat transfer device；

The energy supply component of Fig. 6 the utility model step foamed ceramics enhanced boiling heat transfer device and control assembly structural representation Figure；

The membrane flux of Fig. 7 the utility model step foamed ceramics enhanced boiling heat transfer device trickle with air-blowing speed change Change curve.

Appended drawing reference indicates in figure are as follows: 1- valve body；The first ventilation pipe of 2-；3- aqueduct；The second ventilation pipe of 4-；5- Gas working medium effuser；6- secondary heat exchange cylinder；7- water outlet；8- level-one heat exchange cylinder；9- working medium entrances；10- gas vent；11- into Water separator；12- spiral coil；13- foamed ceramics layer；14- level-one heat exchange cylinder inner cavity；15- handle；16- working medium entrances pipe； 17- the first sender property outlet pipe；18- the second sender property outlet pipe；19- switchs hemisphere；20- back-flow preventer；21- first baffle；22- Second baffle；23- spring；24- support plate；25- leakage hole；26- water storage cavity；27- solar energy photovoltaic panel；28- battery； 29- Electric wire；30- electromagnetic valve；31- temperature sensor；32- level-one heat exchange cylinder level switch；33- electromagnetic flow valve；34- control Center；35-1- secondary heat exchange the first level switch of cylinder；35-2- secondary heat exchange the second level switch of cylinder；The small water pump of 36-.

Specific embodiment

Step foamed ceramics enhanced boiling heat transfer device as shown in Figure 1, including energy supply component, monitor component, level-one heat exchange Cylinder 8 and secondary heat exchange cylinder 6；The current output terminal of the energy supply component is electrically connected with the current input terminal of the monitor component；Institute Monitor component is stated to be mounted on the outer wall or upper bottom surface of the level-one heat exchange cylinder 8 and the secondary heat exchange cylinder 6；The level-one heat exchange The upper bottom surface of cylinder 8 is equipped with the first ventilation pipe 2, and one end of first ventilation pipe 2 is through level-one heat exchange 8 upper bottom surface of cylinder And the bottom in the level-one heat exchange cylinder 8 is extended to, first ventilation pipe 2 and level-one heat exchange 8 fluid communication of cylinder；Institute State level-one heat exchange cylinder 8 upper bottom surface on gas flow outlet and 4 gas of the second ventilation pipe inflow end fluid communication, described second 4 gas outflow end of ventilation pipe runs through the upper bottom surface of the secondary heat exchange cylinder 6, and the spiral shell with the inside of the secondary heat exchange cylinder 6 Gas input fluid communication in capstan pipe 12, the gas of the spiral coil 12 is by through the secondary heat exchange cylinder The gas working medium effuser 5 of 6 upper bottom surfaces flows out；Liquid flowing outlet and aqueduct 3 on 6 lower sides of secondary heat exchange cylinder Liquid inflow port fluid communication, the liquid of the upper bottom surface of the liquid outlet of the aqueduct 3 and level-one heat exchange cylinder 8 Flow into end fluid communication；The bottom sidewall of the level-one heat exchange cylinder 8 is equipped with water outlet 7；In the inside of level-one heat exchange cylinder 8 Equipped with foamed ceramics layer 13, the outlet side of first ventilation pipe 2 is located at the lower section of the foamed ceramics layer 13.

As shown in Figure 1, the foamed ceramics layer 13 is parallel to level-one heat exchange 8 bottom surface of cylinder and its quantity is two or two More than a.Foamed ceramics is the porous ceramic bodies with the high porosity of three-dimensional space grid structure, and moulding is like tempering Foamed plastics or porcelain cavernous body.Due to it have porosity height, large specific surface area, high temperature resistant, it is resistant to chemical etching and Good mechanical strength and filtering absorption property can be widely applied to heat exchange material, gas distribution material, purification metallurgical industry filtering Molten metal, thermal energy recycling, electrolyte membrane and separation dispersive element etc..Higher porosity can make gas-liquid circulate, specific surface Product is once conducive to greatly increase contact area increase heat-transfer surface, and high temperature resistant can be out-of-date not by gas breaks, corrosion resistant in high temperature gas flow Erosion can effectively prevent corrosion of the bittern water to it；Therefore it can be used as the core component of enhanced boiling heat transfer.

As shown in Figures 2 and 3, the gas of first ventilation pipe 2 flows into end and is connected with switch valve module；The switch valve Component, including valve body 1 and handle 15；The valve body 1 is three-port structure: a side of the valve body 1 is equipped with working medium entrances Pipe 16, on the side of the valve body 1 opposite with the working medium entrances pipe 16 be equipped with the second sender property outlet pipe 18, with it is described The vertical valve body 1 of working medium entrances pipe 16 and the 18 place side of the second sender property outlet pipe is equipped with the in horizontal side One sender property outlet pipe 17；Switch hemisphere 19, the switch hemisphere 19 and the fixed company of the handle 15 are equipped with inside the valve body 1 It connects, the switch hemisphere 19 rotates in the valve body 1 under the driving of the handle 15；Working medium entrances 9 enter with the working medium The gas of mouth pipe 16 flows into end fluid communication, the gas inflow of the gas outflow end of the working medium entrances pipe 16 and the valve body 1 Hold fluid communication, the inflow end fluid communication of the gas outflow end of the valve body 1 and the second sender property outlet pipe 18, described the The gas of the gas outflow end of two sender property outlet pipes 18 and first ventilation pipe 2 flows into end fluid communication, the valve body 1 The inflow end fluid communication of another gas outflow end and the first sender property outlet pipe 17, the first sender property outlet pipe 17 Outflow end is connected with ambient atmosphere.

Gas working medium enters working medium entrances pipe 16 from working medium entrances 9, and rotational handle 15 is parallel with working medium entrances pipe 16, this Shi Kaiguan hemisphere 19 closes the first sender property outlet pipe 17, enters the second sender property outlet pipe 18 by valve body 1, then from the first ventilation Pipeline 2 enters level-one heat exchange cylinder 8.When wanting that heat exchanger is allowed to stop working, it is vertical with working medium entrances pipe 16 to go to handle 15, opens at this time It closes hemisphere 19 and closes the second sender property outlet pipe 18, high-temperature gas working medium is flowed out from the first sender property outlet pipe 17, arranged to external.First The nozzle of sender property outlet pipe 17 and the second sender property outlet pipe 18 is circle, and the valve of selection is globe valve.

As shown in figure 4, being equipped with inside the pipeline of first ventilation pipe 2 prevents level-one heat exchange 8 internal liquid of cylinder The back-flow preventer 20 of reflux, the back-flow preventer 20 include first baffle 21, second baffle 22, spring 23 and support plate 24；First baffle 21, second baffle 22, spring 23 and support plate 24 are that stainless steel material is made.The support plate 24 is fixed In the inner wall of the pipe of first ventilation pipe 2；The upper bottom surface of the lower end of the spring 23 and the support plate 24 is fixed to be connected It connects；The upper end of the spring 23 is fixedly connected with the bottom surface of the second baffle 22；The first baffle 21 is fixed on described In the inner wall of the pipe of first ventilation pipe 2, the first baffle 21 is cirque structure；The second baffle 22 is located at described the One baffle, 21 lower section, the diameter of the second baffle 22 are less than the diameter of 21 large circle of first baffle and are greater than described first The diameter of 21 small circle ring of baffle；The support plate 24 is equipped with several through-holes through the support plate 24.When second baffle 22 Pressure by top by gas working medium, when pressure is greater than spring 23, and elastically-deformable power occurs, second baffle 22 is to moving down Dynamic, gas working medium passes through；When gas working medium pressure is small, first baffle 21 is pressed under the effect of spring force with baffle 22 Tightly, it can prevent cooling liquid from flowing back along the first ventilation pipe 2.

Can be notified by gas flow has certain impact to pipe bent position, heat also the largest loss here, described first The pipe bent position of ventilation pipe 2 carries out thickening setting, is conducive to enhance pipeline stability, while playing insulation effect again.

As shown in figure 5, it is equipped with inlet water divider 11 inside level-one heat exchange cylinder 8, the cylindrical shape with water storage cavity 26 Structure；The upper end of the cylinder-like structure and the inner wall of level-one heat exchange 8 upper bottom surface of cylinder are welded and fixed；The cylinder-like structure Bottom surface and side be equipped with the leakage hole 25 with 26 fluid communication of water storage cavity；The liquid outlet of the aqueduct 3 with 26 fluid communication of water storage cavity inside the inlet water divider 11；Liquid in the water storage cavity 26 by leakage hole 25 with it is described Level-one heat exchange 14 fluid communication of cylinder inner cavity；Gas vent 10 is equipped on the upper bottom surface of the secondary heat exchange cylinder 6.By secondary heat exchange cylinder The liquid working substance of 6 preheatings enters water storage cavity 26 by aqueduct 3, the liquid in the pressure and water storage cavity 26 for relying on small water pump 36 Gravity, liquid working substance from leakage hole 25 drop to level-one heat exchange cylinder inner cavity 14 in, to be heated to liquid working substance.

As shown in Figure 6: energy supply component includes solar energy photovoltaic panel 27 and battery 28；The electric current of the solar energy photovoltaic panel 27 Output end is electrically connected with the current input terminal of the battery 28；The electric current of the output end of the battery and the monitor component inputs End electrical connection.All electricity consumptions of this equipment are provided by solar energy power generating and equipped with batteries, and extra electricity is stored with true Protecting equipment can be in unglazed or few luminous environment work.

The monitor component includes control centre 34, electromagnetic valve 30, temperature sensor 31, level-one heat exchange cylinder water level detecting Device 32, electromagnetic flow valve 33, the first level switch of secondary heat exchange cylinder 35-1, secondary heat exchange cylinder the second level switch 35-2 and Small water pump 36；The control centre 34 is located on the upper bottom surface of level-one heat exchange cylinder 8；The electromagnetic flow valve 33 is located at described Switch valve module the second sender property outlet pipe 18 and first ventilation pipe 2 between, and with second sender property outlet Pipe 18 and 2 fluid communication of the first ventilation pipe；The electromagnetic valve 30 is fixedly mounted at the water outlet 7；It is described Temperature sensor 31 is mounted on the lower sides of the level-one heat exchange cylinder 8；The level-one heat exchange cylinder level switch 32 is installed In level-one heat exchange 8 upper portion side wall of cylinder；The first level switch of secondary heat exchange cylinder 35-1 is mounted on the second level and changes In the middle part of sliding channel of hot cylinder 6, and it is identical as the lower end height of the spiral coil 12；Second water level detecting of secondary heat exchange cylinder Device 35-2 is mounted in the upper portion side wall of the secondary heat exchange cylinder 6；The small water pump 36 is mounted on the secondary heat exchange cylinder 6 On lower sides, and the liquid flowing outlet of 6 lower sides of secondary heat exchange cylinder passes through the small water pump 36 and aqueduct 3 Liquid flows into end fluid communication；The signal output end of the control centre 34 respectively with the small water pump 36, the electromagnetic valve 30 and the electromagnetic flow valve 33 signal input part communication connection；The signal input part of the control centre 34 respectively with it is described Temperature sensor 31, level-one heat exchange cylinder level switch 32, secondary heat exchange cylinder the first level switch 35-1 and institute State the signal output end connection of the second level switch of secondary heat exchange cylinder 35-2.

The first level switch of secondary heat exchange cylinder 35-1 is mounted on the side wall of the secondary heat exchange cylinder 6, and with institute The lower end height for stating spiral coil 12 is identical；The second level switch of secondary heat exchange cylinder 35-2 is mounted on the secondary heat exchange In the upper portion side wall of cylinder 6, and it is identical as the upper end level of the spiral coil 12.

The working principle of specific step foamed ceramics enhanced boiling heat transfer device are as follows:

In the present embodiment, the liquid of heat exchanger heating is bittern water, is mainly used for membrane distillation and desalinizes salt water.It is heated Bittern water is membrane distillation stoste, and it is membrane distillation that the temperature for needing the liquid being heated provided for membrane distillation system, which is 65-75 DEG C, The temperature of liquid is 65-75 DEG C of range in the range of the optimum temperature of stoste, that is, in level-one heat exchange cylinder 8.

10. solar energy photovoltaic panel 27 converts luminous energy to electric energy, and by electric energy storage in battery 28.The electric current of battery 28 Output end is electrically connected with the current input terminal of control centre 34, is powered for control centre 34.The signal of the control centre 34 is defeated Outlet is communicated to connect with the signal input part of the small water pump 36, the electromagnetic valve 30 and the electromagnetic flow valve 33 respectively: It controls small water pump 36 liquid working substance of secondary heat exchange cylinder 6 is pumped into level-one heat exchange cylinder 8, controls the electromagnetic valve 30 and beat The uninterrupted of the open and close and described electromagnetic flow valve 33.The signal input part of the control centre 34 respectively with the temperature Sensor 31, the level-one heat exchange cylinder level switch 32, secondary heat exchange cylinder the first level switch 35-1 and described two The signal output end connection of grade heat exchange the second level switch of cylinder 35-2, obtained monitoring signals return to control centre 34 and monitor Control the work of heat exchanger.

High-temperature gas working medium enters working medium entrances pipe 16 from working medium entrances 9, and rotational handle 15 and working medium entrances pipe 16 are flat Row switchs hemisphere 19 at this time and closes the first sender property outlet pipe 17, and high-temperature gas working medium enters the second sender property outlet pipe by valve body 1 18, then into the first ventilation pipe 2.

When pressure of the second baffle 22 by top by gas working medium, elastically-deformable power occurs when pressure is greater than spring 23 When, second baffle 22 moves down, and gas working medium passes through, and enters in level-one heat exchange cylinder inner cavity 14；When gas working medium pressure is small When, under the effect of spring force, first baffle 21 and second baffle 22 are compressed, and cooling liquid can be prevented along the first snorkel It flows back in road 2.

At the same time, the liquid working substance being preheated in secondary heat exchange cylinder 6 is under the drive of small water pump 36, by aqueduct 3 Into the water storage cavity 26 of level-one heat exchange cylinder 8, liquid working substance drops in level-one heat exchange cylinder inner cavity 14 from leakage hole 25.

Out of first ventilation pipe 2 come out high-temperature gas working medium enter level-one heat exchange cylinder inner cavity 14 in lower part, first The outlet side of ventilation pipe 2 is located at the lower section of the foamed ceramics layer 13, constantly the liquid into level-one heat exchange cylinder inner cavity 14 The temperature of high-temperature gas working medium is passed to the preheated liquid in level-one heat exchange cylinder inner cavity 14 by air-blowing.

When high-temperature gas working medium passes through foamed ceramics layer 13, foamed ceramics has good three-dimensional flow-guiding structure, is a mass of Connection or non-intercommunicating pore, a part contact the heat to foamed ceramics layer 13, and foamed ceramics layer transfers energy to liquid work again Matter；On the other hand, when high-temperature gas passes through foamed ceramics layer 13, raising speed on high-temperature gas working medium bubble is slowed down to a certain extent Degree increases the gas-liquid heat exchange time to a certain extent；Third, after high-temperature gas working medium passes through foamed ceramics layer 13, bubble meeting Many minute bubbles are reassembled into, on the one hand minute bubbles increase liquid perturbation, form illusion boiling, the ratio table of another aspect minute bubbles Area is bigger, can further enhance the heat transfer effect of biphase gas and liquid flow.It drips or flows down from the leakage hole 25 of inlet water divider 11 The liquid come can contact again with the liquid of the suspension on surface interior in level-one heat exchange cylinder inner cavity 14 once to exchange heat, and carry out Heat convection.

The temperature sensor 31 installed on the lower sides of level-one heat exchange cylinder 8 monitors in level-one heat exchange cylinder inner cavity 14 The temperature of interior liquid, and it is fed back to control centre 34.When liquid working substance temperature is lower than 65 DEG C in level-one heat exchange cylinder inner cavity 14, Control centre 34 increases the flow of high-temperature gas working medium by control electromagnetic flow valve 33, enhances heat exchange efficiency；When level-one exchanges heat When liquid working substance temperature is higher than 75 DEG C in cylinder inner cavity 14, control centre 34 drives small water pump 36, by the low temperature in secondary heat exchange cylinder 6 Liquid working substance, the water storage cavity 26 of level-one heat exchange cylinder 8 is entered from aqueduct 3, and liquid working substance drops to level-one from leakage hole 25 and changes In hot cylinder inner cavity 14.When the liquid height in level-one heat exchange cylinder 8 reaches at level-one heat exchange cylinder level switch 32, level-one heat exchange Monitoring information is fed back to control centre 34 by cylinder level switch 32, and control centre 34 controls small water pump 36 and stops working, and is stopped It is filled the water into level-one heat exchange cylinder 8.

When temperature sensor 31 monitors that the temperature in level-one heat exchange cylinder 8 is 65-75 DEG C, 34 control water outlets in control The electromagnetic valve 30 of mouth 7 is opened, and the high-temp liquid being heated is flowed out from water outlet 7.When temperature sensor 31 monitors that level-one is changed When temperature in hot cylinder 8 is lower than 65 DEG C, electromagnetic valve 30 is closed, and liquid working substance will not flow out.

In order to which the gas working medium preferably using the preheating of the high-temperature gas working medium to have exchanged heat, to exchange heat can be logical from second Feed channel 4 flows out, subsequently into the spiral coil 12 in secondary heat exchange cylinder 6.The gas of discharge to exchange heat can be carried out another Secondary cooling, and the liquid of the cavity of secondary heat exchange cylinder 6 can be preheated, make full use of the thermal energy of gas；Spiral coil 12 Helical spiral design, it is possible to increase heat exchange area.

Secondary heat exchange cylinder 6 is discharged by gas working medium effuser 5 in gas after cooling, the liquid in secondary heat exchange cylinder 6 after preheating Body is pumped out under the control of control centre 34 by small water pump 36, and the water inlet point of level-one heat exchange cylinder 8 is pumped into along aqueduct 3 It in hydrophone 11, is dripped from leakage hole 25, carries out gas-liquid contact heat exchange.The first water of secondary heat exchange cylinder installed on secondary heat exchange cylinder 6 Bit detector 35-1 monitors the lowest water level of secondary heat exchange cylinder 6, secondary heat exchange cylinder the second level switch 35-2 secondary heat exchange cylinder 6 Peak level, and the signal of monitoring is fed back to control centre 34.When the water level of secondary heat exchange cylinder 6 is lower than secondary heat exchange cylinder the When at one level switch 35-1, control centre 34 controls to fill the water to secondary heat exchange cylinder 6, and guarantee spiral coil 12 is changed with liquid Heat.When the water level of secondary heat exchange cylinder 6 is higher than at the second level switch of secondary heat exchange cylinder 35-2, the control of control centre 34 stops It is filled the water to secondary heat exchange cylinder 6.

The liquid being heated is subjected to membrane distillation process, as shown in fig. 7, the temperature for the bittern water being heated is higher, film is logical Amount is higher, and still, the cost that the higher external world of temperature is paid is also bigger, therefore selected 65-75 DEG C of temperature range is the most suitable Preferably；With the extension of air-blowing time, gas-liquid volume ratio increases, and membrane flux is obviously improved.The raising of air-blowing amount is to vacuum membrane distillation Membrane flux is affected, and the turbulent flow that air-blowing is formed can largely cut down concentration boundary layer, alleviates concentration polarization, makes It obtains membrane flux to significantly improve, air-blowing is more than certain threshold values, and membrane flux will decline.The height that the heat exchanger of the utility model is passed through Wet body exchanges heat to liquid working substance by the way of air-blowing, air-blowing reinforcing has been carried out to the high temperature stoste of outflow, under raising Membrane flux during one step membrane distillation.Because heat exchanger, the gas that air-blowing is strengthened is discharged in gas working medium after most of heat exchange Threshold values is also not achieved in amount.Therefore high-temperature gas working medium can not only be carried out by the heat exchanger of the utility model with liquid working substance Heat exchange can also carry out air-blowing reinforcing to liquid working substance, improve the membrane flux during a step membrane distillation.

In the utility model embodiment, the high-temperature gas working medium of inflow is air, and the liquid being heated is bittern to be processed Water stoste；In the heat exchanger material therefor of the utility model, the material contacted with gas is high temperature resistant, the material contacted with liquid Material is corrosion resistance higher material.

Wherein gas and liquid integrally flow to opposite coincident and change characteristics of heat transfer by force, carry out in secondary heat exchange cylinder 6 to stoste It preheats, gas-liquid direct contact heat transfer in level-one heat exchange cylinder 8 reduces intermediate heat process, improves heat transfer effect.High-temperature gas The bubble of working medium pressure suffered during rising is smaller and smaller, and bubble can constantly expand, so that specific surface area is more next It is smaller to be unfavorable for exchanging heat, when bubble passes through foamed ceramics layer 13, since the small air gap characteristics of foamed ceramics 13 can be by bubble weight Group, becomes lesser bubble, on the one hand increases bubble specific surface area and strengthens enhanced heat exchange, on the other hand increases disturbing for stoste It is dynamic to be conducive to exchange heat.This design of heat exchanger is suitable for the stoste heating part of bitter bittern desalting, at the same to outflow high temperature stoste into It has gone air-blowing reinforcing, has been conducive to improve the membrane flux during next step membrane distillation.All electricity consumptions of the utility model heat exchanger will It is provided, and equipped with battery, extra electricity can be stored to ensure that equipment can be in unglazed or few light work by solar energy power generating It works under condition.

Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes among still in present patent application scope of protection of the claims.

Claims (9)

1. step foamed ceramics enhanced boiling heat transfer device, which is characterized in that including energy supply component, monitor component, level-one heat exchange cylinder (8) and secondary heat exchange cylinder (6)；The current output terminal of the energy supply component is electrically connected with the current input terminal of the monitor component； The monitor component is mounted on the outer wall or upper bottom surface of level-one heat exchange cylinder (8) and the secondary heat exchange cylinder (6)；Described one The upper bottom surface of grade heat exchange cylinder (8) is equipped with the first ventilation pipe (2), and the level-one is run through in one end of first ventilation pipe (2) Heat exchange cylinder (8) upper bottom surface simultaneously extends to the bottom in level-one heat exchange cylinder (8), first ventilation pipe (2) and described one Grade heat exchange cylinder (8) fluid communication；Gas flow outlet and the second ventilation pipe (4) on the upper bottom surface of level-one heat exchange cylinder (8) Gas flows into end fluid communication, and the second ventilation pipe (4) gas outflow end runs through the upper bottom of the secondary heat exchange cylinder (6) Face, and the gas input fluid communication with the spiral coil (12) of the inside of the secondary heat exchange cylinder (6), the helical disk The gas managed in (12) passes through gas working medium effuser (5) outflow through secondary heat exchange cylinder (6) upper bottom surface；Described two The liquid of liquid flowing outlet and aqueduct (3) on grade heat exchange cylinder (6) lower sides flows into end fluid communication, the water-supply-pipe The liquid inflow port fluid communication of the liquid outlet in road (3) and the upper bottom surface of level-one heat exchange cylinder (8)；The level-one heat exchange The bottom sidewall of cylinder (8) is equipped with water outlet (7)；Foamed ceramics layer (13) are equipped in the inside of level-one heat exchange cylinder (8), institute The outlet side for stating the first ventilation pipe (2) is located at the lower section of the foamed ceramics layer (13).

2. step foamed ceramics enhanced boiling heat transfer device according to claim 1, which is characterized in that the foamed ceramics layer (13) it is parallel to level-one heat exchange cylinder (8) bottom surface and its quantity is two or more.

3. step foamed ceramics enhanced boiling heat transfer device according to claim 1, which is characterized in that first snorkel The gas in road (2) flows into end and is connected with switch valve module；The switch valve module includes valve body (1) and handle (15)；The valve Body (1) be three-port structure: a side of the valve body (1) be equipped with working medium entrances pipe (16), with the working medium entrances pipe (16) side of the opposite valve body (1) be equipped with the second sender property outlet pipe (18), with the working medium entrances pipe (16) and The vertical valve body (1) side in side where the second sender property outlet pipe (18) is equipped with the first sender property outlet pipe (17)；Switch hemisphere (19) is equipped with inside the valve body (1), the switch hemisphere (19) is fixedly connected with the handle (15), The switch hemisphere (19) rotation in the valve body (1) under the driving of the handle (15)；Working medium entrances (9) and the work The gas of matter inlet tube (16) flows into end fluid communication, gas outflow end and the valve body (1) of the working medium entrances pipe (16) Gas flow into end fluid communication, the inflow end of the gas outflow end of the valve body (1) and the second sender property outlet pipe (18) The gas of fluid communication, the outflow end of the second sender property outlet pipe (18) and first ventilation pipe (2) flows into end fluid Conducting, the inflow end fluid communication of another gas outflow end of the valve body (1) and the first sender property outlet pipe (17), institute The outflow end for stating the first sender property outlet pipe (17) is connected with ambient atmosphere.

4. step foamed ceramics enhanced boiling heat transfer device according to claim 3, which is characterized in that first snorkel The back-flow preventer (20) for preventing level-one heat exchange cylinder (8) the internal liquid reflux is equipped with inside the pipeline in road (2), it is described to prevent back Flowing device (20) includes first baffle (21), second baffle (22), spring (23) and support plate (24)；The support plate (24) is solid It is scheduled in the inner wall of the pipe of first ventilation pipe (2)；The lower end of the spring (23) and the upper bottom of the support plate (24) Face is fixedly connected；The upper end of the spring (23) is fixedly connected with the bottom surface of the second baffle (22)；The first baffle (21) it is fixed in the inner wall of the pipe of first ventilation pipe (2), the first baffle (21) is cirque structure；Described Two baffles (22) are located at below the first baffle (21), and the diameter of the second baffle (22) is less than the first baffle (21) The diameter of large circle and the diameter for being greater than the first baffle (21) small circle ring；The support plate (24), which is equipped with, runs through the branch The through-hole of fagging (24).

5. step foamed ceramics enhanced boiling heat transfer device according to claim 4, which is characterized in that exchange heat in the level-one Inlet water divider (11) are equipped with inside cylinder (8), the inlet water divider (11) is the cylinder-like structure with water storage cavity (26)；Institute The inner wall of the upper end and level-one heat exchange cylinder (8) upper bottom surface of stating cylinder-like structure is welded and fixed；Under the cylinder-like structure Bottom surface and side are equipped with and the leakage hole (25) of water storage cavity (26) fluid communication；The liquid outlet of the aqueduct (3) Internal water storage cavity (26) fluid communication with the inlet water divider (11)；Liquid in the water storage cavity (26) passes through leakage hole (25) exchange heat cylinder inner cavity (14) fluid communication with level-one；Gas vent (10) are equipped on the upper bottom surface of the secondary heat exchange cylinder (6).

6. step foamed ceramics enhanced boiling heat transfer device according to claim 3, which is characterized in that energy supply component includes too Positive energy photovoltaic panel (27) and battery (28)；The current output terminal of the solar energy photovoltaic panel (27) and the electric current of the battery (28) Input terminal electrical connection；The output end of the battery is electrically connected with the current input terminal of the monitor component.

7. step foamed ceramics enhanced boiling heat transfer device according to claim 6, which is characterized in that the monitor component packet Include control centre (34), electromagnetic valve (30), temperature sensor (31), level-one heat exchange cylinder level switch (32), Electromagnetic Flow Valve (33), the first level switch of secondary heat exchange cylinder (35-1), the second level switch of secondary heat exchange cylinder (35-2) and small water pump (36)；The control centre (34) is located on the upper bottom surface of level-one heat exchange cylinder (8)；The electromagnetic flow valve (33) is located at institute State switch valve module the second sender property outlet pipe (18) and first ventilation pipe (2) between, and with second work Matter outlet (18) and the first ventilation pipe (2) fluid communication；The electromagnetic valve (30) is fixedly mounted on the water outlet At mouth (7)；The temperature sensor (31) is mounted on the lower sides of level-one heat exchange cylinder (8)；The level-one heat exchange cylinder Level switch (32) is mounted in described level-one heat exchange cylinder (8) upper portion side wall；First level switch of secondary heat exchange cylinder (35-1) is mounted in the middle part of sliding channel of the secondary heat exchange cylinder (6)；Second level switch of secondary heat exchange cylinder (35-2) It is mounted in the upper portion side wall of the secondary heat exchange cylinder (6)；The small water pump (36) is mounted under the secondary heat exchange cylinder (6) On portion's side wall, and the liquid flowing outlet of the secondary heat exchange cylinder (6) lower sides passes through the small water pump (36) and aqueduct (3) liquid flows into end fluid communication；The signal output end of the control centre (34) respectively with the small water pump (36), described The communication connection of the signal input part of electromagnetic valve (30) and the electromagnetic flow valve (33)；The signal of the control centre (34) is defeated Enter to hold exchange heat respectively with the temperature sensor (31), the level-one cylinder level switch (32), the secondary heat exchange cylinder first Level switch (35-1) is connected with the signal output end of second level switch of secondary heat exchange cylinder (35-2).

8. step foamed ceramics enhanced boiling heat transfer device according to claim 7, which is characterized in that the secondary heat exchange cylinder First level switch (35-1) is mounted on the side wall of the secondary heat exchange cylinder (6), and under the spiral coil (12) End height is identical；The upper end level phase of second level switch of secondary heat exchange cylinder (35-2) and the spiral coil (12) Together.

9. step foamed ceramics enhanced boiling heat transfer device according to claim 1, which is characterized in that in first ventilation The pipe bent position of pipeline (2) carries out thickening setting.