CN207439984U - Test platform for two-phase heat exchange experiment of shell-and-tube heat exchanger - Google Patents
Test platform for two-phase heat exchange experiment of shell-and-tube heat exchanger Download PDFInfo
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- CN207439984U CN207439984U CN201721410914.0U CN201721410914U CN207439984U CN 207439984 U CN207439984 U CN 207439984U CN 201721410914 U CN201721410914 U CN 201721410914U CN 207439984 U CN207439984 U CN 207439984U
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- 238000002474 experimental method Methods 0.000 title claims abstract description 43
- 238000012360 testing method Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 92
- 239000000498 cooling water Substances 0.000 claims abstract description 50
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 238000012546 transfer Methods 0.000 claims description 31
- 230000001105 regulatory effect Effects 0.000 claims description 15
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 239000011800 void material Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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Abstract
The utility model discloses a two-phase heat exchange experiment test platform of a shell and tube heat exchanger, which comprises a boiler, wherein the boiler is respectively connected with a compressed air heater and a hot water heater, the hot water heater is connected with a hot water separator, the compressed air heater and the hot water separator are both connected with a mixer, the mixer is connected with an experiment element, the experiment element is sequentially connected with a cooling water tank, a cooling tower and a cooling water separator, the cooling water separator is connected with the experiment element to form a loop, and the experiment element is also sequentially connected with a separator, a hot water tank and a hot water heater; the utility model discloses use air and water as working medium, the shell side is through the mixture of hot water and air, and the pipe side lets in cooling water, accomplishes heat exchanger thermal property and flow resistance characteristic test. A test platform is built to complete the two-phase experiment of the shell-and-tube heat exchanger, the operation is convenient, the adjustment is flexible, and the heat exchange efficiency can be researched in many aspects by changing the flow velocity of hot water and cooling water, the content of non-condensable gas and the circulation space of a medium.
Description
Technical field
The utility model belongs to heat exchanger technical field of measurement and test, more particularly to a kind of shell-and-tube heat exchanger two-phase local heat transfer
Test platform.
Background technology
As modern science and technology include the hair of computer technology, the communication technology, sensing technology, modern control theory etc.
Exhibition, the gradual maturation of modern detecting, brand-new measuring technology have high-precision, real-time height, friendly interface, easy to operate etc.
Advantage is widely used in actual production and laboratory research；In recent years, as industrial production will for heat exchanger precision
The continuous improvement asked, the development and research of heat exchanger performance test platform develop quickly.
Utility model content
Purpose of utility model：The utility model provides a kind of shell-and-tube heat exchanger two-phase local heat transfer test platform, with
Solve the problems of the prior art.
Technical solution：To achieve these goals, the utility model uses following technical scheme：
A kind of shell-and-tube heat exchanger two-phase local heat transfer test platform, including boiler 5, the boiler 5 connects compression respectively
Air heater 4 and hot-water heater 6, the hot-water heater 6 connect hot water water knockout drum 7,4 He of compressed air heater
Hot water water knockout drum 7 is all connected with mixer 8, and the mixer 8 connects experiment component 11, and the experiment component 11 is sequentially connected cooling
Water tank 12, cooling tower 13 and cooling water separator 14, cooling water separator 14 reconnects experiment component 11 and is formed into a loop, described
Experiment component 11 is also sequentially connected separator 10, hot water 9 and hot-water heater 6；
The compressed air heater 4 is also connected with air accumulator 3, and the air accumulator 3 is sequentially connected free dry machine 2 and air compressor machine
1；
Exhaust apparatus is additionally provided on the separator 10.
Further, it is also respectively provided with steam trap on the compressed air heater 4 and hot-water heater 6.
Further, the dry machine 2 of the sky and air accumulator 3, boiler 5 and compressed air heater 4, boiler 5 and hot water heating
It is all provided between device 6, mixer 8 and experiment component 11, experiment component 11 and separator 10, cooling tower 13 and cooling water separator 14
It is equipped with ball valve；Check valve is provided between the experiment component 11 and cooling water tank 12；It is additionally provided on the cooling tower 13
Cooling tower circulating pump.
Further, two sets of ball valves, two range of flows are parallel between the hot water 9 and hot-water heater 6 not
Same water pump and two check valves；Hot water circulating pump is additionally provided on the hot-water heater 6.
Further, two groups of different adjustings of open range are parallel between the compressed air heater 4 and mixer 8
Valve, two flowmeters and two ball valves, and connect a ball valve and a check valve.
Further, be parallel between the hot water water knockout drum 7 and mixer 8 two groups of different regulating valves of open range,
Two flowmeters and two ball valves, and a check valve of connecting.
Further, two sets of ball valves, two range of flows are parallel between the cooling water tank 12 and cooling tower 13 not
Same water pump and two check valves, and a ball valve of connecting；It is parallel between the cooling water separator 14 and experiment component 11
The different regulating valve of two groups of open ranges, two flowmeters and two ball valves, then connect a check valve and a ball valve.
Further, temperature-measuring port is both provided on the air accumulator 3, hot water 9 and cooling water tank 12 and pressure is surveyed
Mouthful；The inlet/outlet pipe road junction of the experiment component 11 is both provided with temperature-measuring port and pressure surveys mouth.
Further, the regulating valve is all connected with the pneumatic valve port of air accumulator 3.
A kind of shell-and-tube heat exchanger two-phase local heat transfer test method, including compressed air system, vapour system, cooling water
System and test system, comprise the following steps：Start air compressor machine 1 and empty dry machine 2, adjust supply gas pressure, a part is to regulating valve
It is supplied, another part enters experiment component 11 by compressed air heater 4 to mixer 8.Start 13 He of cooling tower
Cooling tower circulating pump, cooling water arrive experiment component 11 again by cooling down water separator 14；Start hot water circulating pump, hot water is from hot water
Water tank 9 enters hot-water heater 6, then enters through hot water water knockout drum 7 with pipeline after mixer 8 mixes with air, finally enters reality
Test element 11；Last starting trouble 5, steam enter hot-water heater 6 and compressed air heater 4, and water and air is carried out
Heating, steam condensation Cheng Shui are discharged from steam trap；After flow, temperature, pressure stability, start data acquisition, intraductal heat exchange knot
After beam, hot water is sent to separator 10 and returns hot water 9, and cooling water returns to cooling water tank 12, air emptying.
Advantageous effect：For the utility model using air and water as working media, shell-side passes through hot water and the mixture of air, pipe
Side is passed through cooling water, completes heat exchanger thermal property and is tested with flow resistance characteristics.Test platform is built to change to complete shell-and-tube
Hot device two-phase experiment, easy to operate, flexible modulation can be by changing hot water and cooling water flow velocity, the content of incoagulable gas
And the free air space exchange thermal efficiency of medium carries out many-sided research.
In two-phase local heat transfer, keep hot water flow constant, by changing the flow of air, draw air content to two
The mass gas content rate shell-and-tube heat exchanger shell side coefficient of heat transfer, friction drop are found out in the influence of the phase coefficient of heat transfer, friction drop
Relation；Since the disturbance that micro void fraction can enhance fluid has the effect for promoting to exchange heat, increase the coefficient of performance of heat exchanger
Add, but reache a certain level, the speedup of pressure drop is more than the speedup of the coefficient of heat transfer, will decline the coefficient of performance, this experiment can be with
The void fraction that heat exchanger is made to reach maximum performance coefficient under specific operation is found out, it is significant to strengthening shell-side heat transfer.It keeps
Void fraction is constant, by changing the flow of hot water, draws influence of the hot water flow to the two-phase coefficient of heat transfer, friction drop, looks for
Go out hot water flow and the shell-and-tube heat exchanger shell side coefficient of heat transfer, the relation of friction drop；Keep the flow of gas-liquid mixture not
Become, by changing the flow of cooling water, find out the relation of the coefficient of heat transfer in the variation and tube bank of cooling water flow.
Due to cooling water, hot water and compressed air be equipped with two different flow scopes water pump and dress there are two aperture models
The parallel flow paths of different startup regulating valves are enclosed, thus it is very wide for the condition range of adjusting, adapt to the various specified works of difference
The shell-and-tube heat exchanger of condition different range can also provide void fraction excursion larger two-phase experimental study on heat transfer.
In addition, this experiment can pass through temperature, pressure and flow that each thermometer, pressure gauge and flowmeter are surveyed, cooling
The switch conditions of the water level and boiler of water tank and hot water, cooling tower and each water circulating pump, and can monitoring room into
Row real-time display simultaneously preserves and handles relevant data, convenient to find the problem in concurrency processing system in time.In addition this is
System directly can adjust the aperture of each pneumatic operated valve in monitoring room and change operating mode so as to achieve the purpose that adjust flow, and operation is flexible
Simply, securely and reliably.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is that Fig. 1 is simplification figure；
Wherein：1- air compressor machines, the empty dry machines of 2-, 3- air accumulators, 4- compressed air heaters, 5- boilers, 6- hot-water heaters,
7- hot water water knockout drums, 8- mixers, 9- hot waters, 10- separators, 11- experiment components, 12- cooling water tanks, 13- coolings
Tower, 14- cooling water separators.
Specific embodiment
The utility model is further described with reference to embodiment.
As shown in Figure 1, a kind of shell-and-tube heat exchanger two-phase local heat transfer test platform, including boiler 5, the boiler 5 divides
Not Lian Jie compressed air heater 4 and hot-water heater 6, the hot-water heater 6 connects hot water water knockout drum 7, and the compression is empty
Hot-air heater 4 and hot water water knockout drum 7 are all connected with mixer 8, and the mixer 8 connects experiment component 11, the experiment component 11
Cooling water tank 12, cooling tower 13 and cooling water separator 14 are sequentially connected, cooling water separator 14 reconnects experiment component 11
Forming circuit, the experiment component 11 are also sequentially connected separator 10, hot water 9 and hot-water heater 6；
The compressed air heater 4 is also connected with air accumulator 3, and the air accumulator 3 is sequentially connected free dry machine 2 and air compressor machine
1；The air compressor machine 1 is screw air compressor；
Exhaust apparatus is additionally provided on the separator 10.
Steam trap is also respectively provided on the compressed air heater 4 and hot-water heater 6.
The dry machine 2 and air accumulator 3 of the sky, boiler 5 and compressed air heater 4, boiler 5 and hot-water heater 6, mixer
Ball valve is both provided between 8 and experiment component 11, experiment component 11 and separator 10, cooling tower 13 and cooling water separator 14；
Check valve is provided between the experiment component 11 and cooling water tank 12；Cooling tower Xun Huan is additionally provided on the cooling tower 13
Pump.The boiler 5 is electric heating steam boiler.
Be parallel between the hot water 9 and hot-water heater 6 the different water pump of two sets of ball valves, two range of flows and
Two check valves；Hot water circulating pump is additionally provided on the hot-water heater 6.
Two groups of different regulating valves of open range, two streams are parallel between the compressed air heater 4 and mixer 8
Gauge and two ball valves, and connect a ball valve and a check valve.
Two groups of different regulating valves of open range, two flowmeters are parallel between the hot water water knockout drum 7 and mixer 8
With two ball valves, and connect a check valve.
Be parallel between the cooling water tank 12 and cooling tower 13 the different water pump of two sets of ball valves, two range of flows and
Two check valves, and a ball valve of connecting；Two groups of aperture models are parallel between the cooling water separator 14 and experiment component 11
Different regulating valves, two flowmeters and two ball valves are enclosed, then connect a check valve and a ball valve.
Temperature-measuring port is both provided on the air accumulator 3, hot water 9 and cooling water tank 12 and pressure surveys mouth；The reality
The inlet/outlet pipe road junction for testing element 11 is both provided with temperature-measuring port and pressure survey mouth.
The regulating valve is all connected with the pneumatic valve port of air accumulator 3.Pneumatic control valve disclosure satisfy that the sky from air accumulator
The hot water of gas and water case, cooling tower cold water progress flow is more accurate and easily adjusts.
The flow of two water pumps in parallel is respectively 6 m between the cooling water tank 12 and cooling tower 133/ h and 50m3/
H, the flow of two water pumps in parallel is respectively 6 m between hot water 9 and hot-water heater 63/ h and 50 m3/ h cools down moisture
The open range of two regulating valves in parallel is 0.6-6 m respectively between hydrophone 14 and experiment component 113/ h and 6-60 m3/ h, heat
The open range of two regulating valves in parallel is 1-10m respectively between water separator 7 and mixer 83/ h and 5-50 m3/ h, compression
The open range of two regulating valves in parallel is 10-80 m respectively between air heater 4 and mixer 83/ h and 30-210m3/
h。
Air compressor machine and empty dry machine can be by the air of dry voltage stabilizing by being smoothly sent into gas-liquid mixed after metering, steam heating
It is mixed in device with steam.And it as pipe-line system reaches shell-and-tube heat exchanger, then is emptied after separation.
Cooling tower possesses the cooling maximum amount of water for meeting other equipment in maximum cooling water inflow and system needed for water cooling section.
And corresponding cooling water pump disclosure satisfy that the function of conveying and the recycling of cooling water.
A kind of shell-and-tube heat exchanger two-phase local heat transfer test method, including compressed air system, vapour system, cooling water
System and test system, comprise the following steps：Start screw air compressor 1 and empty dry machine 2, adjust supply gas pressure, a part is exchanged
Section valve is supplied, and another part enters the pipe shell type heat exchange of experiment component 11 by compressed air heater 4 to mixer 8
Device shell-side.Start cooling tower 13 and cooling tower circulating pump, cooling water arrive the pipe of experiment component 11 by cooling down water separator 14 again
In shell heat exchanger pipe；Starting hot water circulating pump, hot water enters hot-water heater 6 from hot water 9, then through hot water water knockout drum 7
Enter with pipeline after mixer 8 mixes with air, finally enter experiment component 11；Finally start electric heating steam boiler 5, steam into
Enter to hot-water heater 6 and compressed air heater 4, water and air is heated, steam condensation Cheng Shui is arranged from steam trap
Go out；After flow, temperature, pressure stability, start data acquisition, after intraductal heat exchange terminates, hot water is sent to separator 10 again
Hot water 9 is returned to, cooling water returns to cooling water tank 12, air emptying.
1st, during two-phase local heat transfer, keep hot water flow constant, by changing the flow of incoagulable gas air, pressed
Drop and the relation between mass gas content rate and heat flow density.
2nd, during two-phase local heat transfer, keep incoagulable gas content constant, by changing hot water and cooling water flow, find out
The variation of hot water and cooling water flow and the heat exchanger coefficient of heat transfer and the relation of pressure drop.
3rd, during two-phase local heat transfer, keep each rate-of flow constant, by change the qualitative temperature of dry air or hot water come
Compare the influence of the qualitative temperature heat exchanging device coefficient of heat transfer.
4th, when two-phase is tested, holding more than measured value is constant, by changing heat exchanger structure, such as changes the arrangement of tube bank
Mode increases the influence that baffle plate comes comparative structure heat exchanging coefficient and pressure drop.
5th, when two-phase is tested, by change the flowing space i.e. tube side of medium and shell side come compared with its to convection transfer rate
With the influence of pressure drop.
The above is only the preferred embodiment of the utility model, it should be pointed out that：For the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (9)
1. a kind of shell-and-tube heat exchanger two-phase local heat transfer test platform, it is characterised in that：Including boiler（5）, the boiler（5）
Compressed air heater is connected respectively（4）And hot-water heater（6）, the hot-water heater（6）Connect hot water water knockout drum（7）,
The compressed air heater（4）With hot water water knockout drum（7）It is all connected with mixer（8）, the mixer（8）Connect experiment component
（11）, the experiment component（11）It is sequentially connected cooling water tank（12）, cooling tower（13）With cooling water separator（14）, cooling
Water separator（14）Reconnect experiment component（11）Forming circuit, the experiment component（11）Also it is sequentially connected separator（10）、
Hot water（9）And hot-water heater（6）；
The compressed air heater（4）It is also connected with air accumulator（3）, the air accumulator（3）It is sequentially connected free dry machine（2）And sky
Press（1）；
The separator（10）On be additionally provided with exhaust apparatus.
2. shell-and-tube heat exchanger two-phase local heat transfer test platform according to claim 1, it is characterised in that：The compression
Air heater（4）And hot-water heater（6）On be also respectively provided with steam trap.
3. shell-and-tube heat exchanger two-phase local heat transfer test platform according to claim 1, it is characterised in that：It is described empty dry
Machine（2）And air accumulator（3）, boiler（5）With compressed air heater（4）, boiler（5）And hot-water heater（6）, mixer（8）
And experiment component（11）, experiment component（11）And separator（10）, cooling tower（13）With cooling water separator（14）Between be all provided with
It is equipped with ball valve；The experiment component（11）And cooling water tank（12）Between be provided with check valve；The cooling tower（13）It is upper to go back
It is provided with cooling tower circulating pump.
4. shell-and-tube heat exchanger two-phase local heat transfer test platform according to claim 1, it is characterised in that：The hot water
Water tank（9）And hot-water heater（6）Between be parallel with the different water pump of two sets of ball valves, two range of flows and two check valves；
The hot-water heater（6）On be additionally provided with hot water circulating pump.
5. shell-and-tube heat exchanger two-phase local heat transfer test platform according to claim 1, it is characterised in that：The compression
Air heater（4）And mixer（8）Between be parallel with two groups of different regulating valves of open range, two flowmeters and two balls
Valve, and connect a ball valve and a check valve.
6. shell-and-tube heat exchanger two-phase local heat transfer test platform according to claim 5, it is characterised in that：The hot water
Water knockout drum（7）And mixer（8）Between be parallel with two groups of different regulating valves of open range, two flowmeters and two ball valves,
One check valve of series connection again.
7. shell-and-tube heat exchanger two-phase local heat transfer test platform according to claim 6, it is characterised in that：The cooling
Water tank（12）And cooling tower（13）Between be parallel with the different water pump of two sets of ball valves, two range of flows and two check valves,
One ball valve of series connection again；The cooling water separator（14）And experiment component（11）Between to be parallel with two groups of open ranges different
Regulating valve, two flowmeters and two ball valves, then connect a check valve and a ball valve.
8. shell-and-tube heat exchanger two-phase local heat transfer test platform according to claim 1, it is characterised in that：The gas storage
Tank（3）, hot water（9）And cooling water tank（12）On be both provided with temperature-measuring port and pressure and survey mouth；The experiment component（11）
Inlet/outlet pipe road junction be both provided with temperature-measuring port and pressure and survey mouth.
9. shell-and-tube heat exchanger two-phase local heat transfer test platform according to claim 7, it is characterised in that：The adjusting
Valve is all connected with air accumulator（3）Pneumatic valve port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721410914.0U CN207439984U (en) | 2017-10-30 | 2017-10-30 | Test platform for two-phase heat exchange experiment of shell-and-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721410914.0U CN207439984U (en) | 2017-10-30 | 2017-10-30 | Test platform for two-phase heat exchange experiment of shell-and-tube heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207439984U true CN207439984U (en) | 2018-06-01 |
Family
ID=62290285
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721410914.0U Expired - Fee Related CN207439984U (en) | 2017-10-30 | 2017-10-30 | Test platform for two-phase heat exchange experiment of shell-and-tube heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207439984U (en) |
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2017
- 2017-10-30 CN CN201721410914.0U patent/CN207439984U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180601 Termination date: 20211030 |