CN109827747A - For studying the device and method of crossing current filler matrix band flow characteristics - Google Patents
For studying the device and method of crossing current filler matrix band flow characteristics Download PDFInfo
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- CN109827747A CN109827747A CN201910183793.8A CN201910183793A CN109827747A CN 109827747 A CN109827747 A CN 109827747A CN 201910183793 A CN201910183793 A CN 201910183793A CN 109827747 A CN109827747 A CN 109827747A
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- crossing current
- filler matrix
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- 239000011159 matrix material Substances 0.000 title claims abstract description 79
- 239000000945 filler Substances 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 107
- 238000002474 experimental method Methods 0.000 claims abstract description 35
- 239000004744 fabric Substances 0.000 claims abstract description 25
- 239000000700 radioactive tracer Substances 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 7
- 239000011521 glass Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 6
- 239000002390 adhesive tape Substances 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000011161 development Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The present invention relates to a kind of for studying the device and method of crossing current filler matrix band flow characteristics, experiment chamber upper surface is connected to and in communication with cloth sink, lower end surface is submerged in the water surface of catch basin, the end face and crossing current air duct for testing chamber side are connected to and in communication with, air duct upper surface flow over equipped with pressure chamber, pressure chamber upper surface is equipped with multiple blowers, through the water distributor for having a uniformly distributed aperture in cloth sink, the water inlet of water pump is connected to and in communication with catch basin, the water outlet of water pump is connected on the water distributor in cloth sink by water lines from the both ends of the bottom plate side of the corresponding experiment chamber of cloth sink after regulating valve and water ga(u)ge；The upper level of panel is disposed with multiple tracer injection holes.Individual crossing current filler matrix band is under different water flow and wind friction velocity, by shooting tracer crossing current filler matrix band single side surface angle of flare and record tracer from experiment chamber viewing surface injection hole flow through certain distance needed for the time, to prejudge the superiority and inferiority of filler matrix band heat exchange property.
Description
Technical field
It is especially a kind of for studying crossing current filler molding the present invention relates to a kind of device for studying cooling tower water properties of flow
The device and method of piece flow characteristics.
Background technique
Cooling tower is come cooling circulating water using the evaporation and heat transfer of water and air with the device of discharge technology system waste heat.
Diaphragm type filler is the core component of cooling tower, and effect is that hot water is scattered in flowing water film on its surface, to increase water
Contact area and time of contact with air increase the intensity of heat exchange of water and air.
It is divided into adverse current filler and crossing current filler by the flow direction difference of water on filler and air.Individual crossing current filler be known as at
Matrix, under the conditions of certain water flow and air quantity, the diffusivity that water flows on matrix band is better, and the residence time is longer, water
Contact with air is more abundant, so the angle of flare of water flow and the residence time in unit height are crossing current filler matrix bands
The two indices of flow characteristics can characterize the heat-sinking capability of matrix band, the waveform and surface hydrophobe of size and matrix band
The correlations such as property.
To crossing current filler matrix band for, water (flow) direction from top to bottom, level side of the airflow direction along matrix band surface
To substantially vertical with water (flow) direction, so the short transverse that vertical direction is filler is defined, along the level side on matrix band surface
To the diameter depth direction for filler, the horizontal direction perpendicular to matrix band surface is the wave height direction of filler.The height of general matrix band
Degree is 1~5m, and diameter depth is 0.7~1.3m, and wave height is 16~40mm.
In order to study crossing current filler matrix band flow characteristics, need a kind of for studying liquid film in crossing current filler matrix band
The experimental provision and experimental method of dispersion of flow angle and residence time,
Summary of the invention
The present invention be to provide for it is a kind of for study crossing current filler matrix band flow characteristics device and method, by individual cross
Stream filler matrix band is under different water flow and wind friction velocity, by shooting tracer in crossing current filler matrix band unilateral side table
The angle of flare in face and record tracer from the injection hole of experiment chamber viewing surface flow through certain distance needed for the time, filled out to prejudge
Expect the superiority and inferiority of matrix band heat exchange property.
To achieve the above object, the technical scheme is that it is a kind of for studying crossing current filler matrix band flow characteristics
Device, by blower, press chamber, crossing current air duct, experiment chamber, catch basin, cloth sink, water pump, Water flow adjusting valve, water flow
Meter, water lines and experimental bench bracket composition, the experiment chamber are made of the panel of bottom plate and transparent organic glass, the experiment
Chamber upper surface is connected to and in communication with cloth sink, and lower end surface is submerged in the water surface of catch basin, the end face of the experiment chamber side and cross
Stream air duct is connected to and in communication with, and another side end face, which is opened wide, is used as air inlet, and the crossing current air duct upper surface is equipped with and presses chamber, pressure chamber
Upper surface is equipped with multiple blowers, and low portion of neck is equipped with multiple closable measuring wind speed mouths；The cloth sink be cavity structure, four
Week and upper surface are all closed, through the water distributor for having a uniformly distributed aperture, the water inlet and catch basin of the water pump in cloth sink
It is connected to and in communication with, the water outlet of the water pump corresponds to experiment chamber from cloth sink by water lines after regulating valve and water ga(u)ge
The both ends of bottom plate side are connected on the water distributor in cloth sink；The upper level of the panel of the transparent organic glass is disposed with more
A tracer injection hole.
Further, fixed tested crossing current filler matrix band on the bottom plate of the experiment chamber, the crossing current filler matrix band
Upper edge it is 5~8cm lower than bottom plate top, left and right relative to experiment chamber it is placed in the middle, and not with the plate contact of transparent organic glass.
Further, when crossing current filler matrix band in short-term than bottom plate heights, the crossing current filler matrix band lower edge is to catchmenting
Plate is sealed up on air inlet in the altitude range of slot.
Further, the size of the experiment chamber is maximum sized 1.2~1.5 times of filler matrix band of crossing current；The bottom plate
It is adjustable according to the wave height of matrix band with the spacing of panel, and the spacing of bottom plate and panel is 3~5mm bigger than the wave height of matrix band.
Further, gauze is wrapped up on the water distributor, the free end of gauze reaches tested crossing current filler molding built-in testing
The upper end on surface, gauze and effective water distribution diameter of tested crossing current filler matrix band are deeply equal, and water flow is enable to be evenly distributed
To the side surface of tested crossing current filler matrix band.
Further, the aperture of 2~3mm is evenly distributed on the water distributor, the center of aperture is away from 2~3cm.
Further, the upper surface of the cloth sink is equipped with openable end cap, to exist on water distributor in experiment
The aperture to flow in the deeply corresponding range of effective water distribution diameter of filler matrix band is closed with adhesive tape.
It is a kind of using for study flow over filler matrix band flow characteristics device experimental method, the steps include: firstly,
Tested crossing current filler matrix band is fixed on to the bottom plate of experiment chamber, regulating water flow regulating valve reads the registration of water ga(u)ge,
Make water flow control corresponding to tested crossing current filler matrix band single side surface in the spray density of experiment condition by formula (1)
Under:
In formula, Q indicates the flow of water, m3/h；A indicates that effective water distribution diameter of tested crossing current filler matrix band is deep, m；B table
Show the wave height of filler, m；ρ indicates the spray density of cooling tower, (m3/h/)m2；Then, the electric machine frequency for adjusting blower, uses wind speed
Instrument presses the measuring wind speed mouth multiple spot on chamber equidistantly to measure wind speed in air inlet and, calculates separately two respective measurements in position
The average value of value reaches the mean wind speed of operating condition setting, and two surveyed mean deviations is required to be not more than 2% side
Effectively；Quantitative tracer is drawn with syringe again, it is desirable that tracer density and clear water density are almost the same, and do not dissolve in short term
Water is injected into tested crossing current filler matrix band surface perpendicular to the direction of bottom plate by tracer injection hole, while shooting note
Record tracer diffusion process and it is corresponding at the time of；Finally by image procossing, the angle of flare of water flow can be measured and in list
Residence time in the height of position.
The beneficial effects of the present invention are:
The present invention is to select to fill out from water in the angle of flare of crossing current filler matrix band surface flow and the anticipation of moisture film residence time
The heat dissipation performance of material, experimental cost is low, easy to operate, quickly and effectively, the comparison for the filler initial stage exploitation that can be used for flowing over, Neng Gou great
It is big to shorten the development time and save development cost.
Detailed description of the invention
Fig. 1 is of the invention for studying the apparatus structure schematic diagram of crossing current filler matrix band flow characteristics.
Specific embodiment
The invention will be further described with embodiment with reference to the accompanying drawing.
As shown in Figure 1, a kind of for studying the device of crossing current filler matrix band flow characteristics, mainly by blower 13, (band is adjusted
Fast device), press chamber 14, crossing current air duct 17, experiment chamber 19, catch basin 20, cloth sink 12, water pump 1, Water flow adjusting valve 2, water flow
Meter 3, water lines 8 and experimental bench bracket 18 form.Separately wind speed is measured with anemobiagraph.
Experiment chamber 19 is made of the space of long narrow shape the panel 6 of bottom plate 7 and transparent organic glass, thereon end face and cloth sink
12 are connected to and in communication with, lower end surface is submerged in the water surface of catch basin 20, and end face and the crossing current air duct 17 of side are connected to and in communication with, another
Side end face, which is opened wide, is used as air inlet 5.The size for testing chamber 19 is 9 maximum sized 1.2~1.5 times of filler matrix band of crossing current.Bottom
The spacing of plate 7 and panel 6 is adjustable (being adjusted by the waist-shaped hole on connecting flange) according to the wave height of matrix band 9, bottom plate 7 and panel
6 spacing need to be 3~5mm bigger than the wave height of matrix band 9.
The matrix band 9 of tested filler is fixed on the bottom plate 7 of experiment chamber 19, and the upper edge of matrix band 9 is lower than 7 top of bottom plate
5~8cm, left and right is placed in the middle relative to experiment chamber 19, and does not contact with the panel of transparent organic glass 6.When matrix band 9 is than bottom plate 7
When height is shorter, plate 4 is sealed up on air inlet 5 in the altitude range of 9 lower edge of matrix band to catch basin 20.
Cloth sink 12 is designed as cavity structure, and in addition to lower end surface and experiment chamber 19 are connected to and in communication with, other each faces are all closed.
Gauze 10 is wrapped up on the water distributor 11 for having a uniformly distributed aperture, water distributor 11 in slot, the free end of gauze 10 reaches tested
Effective water distribution diameter of the upper end of 9 test surfaces of filler matrix band, gauze 10 and tested filler matrix band 9 is deep (to be free of wind inlet section
It is equal with receipts water Duan Kuandu), so that water flow is uniformly distributed in the side surface of tested filler matrix band 9.
The aperture of uniformly distributed 2~3mm on water distributor 11, the center of aperture is away from 2~3cm.The upper surface of cloth sink 12 can be beaten
It opens, to seal the aperture on water distributor 11 not in the deeply corresponding range of effective water distribution diameter of matrix band 9 with adhesive tape in experiment
It closes.
The water inlet of water pump 1 is connected to and in communication with catch basin 20, and the water outlet of water pump 1 is after regulating valve 2 and water ga(u)ge 3
It is connected on the water distributor 11 in cloth sink 12 from the both ends of corresponding experiment 19 bottom plate of chamber, 7 side of cloth sink 12.
It is horizontally disposed to have no less than 3 tracer injection holes 16, water on the top of the panel 6 of transparent organic glass
Prosposition is set below the upper edge of matrix band 9 on the position of 5cm or so, and diameter is 1~2mm.
The low portion of neck of chamber 14 is being pressed to be equipped with 5~8 closable measuring wind speed mouths 15.
Experimental method of the invention is as follows:
Regulating water flow regulating valve 2 reads the registration of water ga(u)ge 3, tested crossing current filler matrix band 9 is made by formula (1)
Water flow corresponding to single side surface controls under the spray density of experiment condition:
In formula, Q indicates the flow of water, m3/h；A indicates that effective water distribution diameter of tested crossing current filler matrix band 9 is deep, m；b
Indicate the wave height of crossing current filler matrix band 9, m；ρ indicates the spray density of cooling tower, (m3/h/)m2。
The electric machine frequency for adjusting blower 13 presses the measuring wind speed mouth multiple spot on chamber equidistant with anemobiagraph in air inlet and
Wind speed is measured, the average value of two respective measured values in position is calculated separately, reaches the mean wind speed of operating condition setting, and
It is required that two mean deviations surveyed are effective no more than 2% side.
Quantitative tracer is drawn with syringe, it is desirable that tracer density and clear water density are almost the same, and short-term insoluble
Yu Shui.It is injected into crossing current 9 surface of filler matrix band perpendicular to the direction of bottom plate by tracer injection hole, while shooting record and showing
The diffusion process of track agent and it is corresponding at the time of.
Finally by image procossing, the angle of flare of water flow and the residence time in unit height can be measured.
Claims (8)
1. it is a kind of for studying the device of crossing current filler matrix band flow characteristics, by blower (13), press chamber (14), crossing current air duct
(17), chamber (19), catch basin (20), cloth sink (12), water pump (1), Water flow adjusting valve (2), water ga(u)ge (3), water are tested
Pipeline (8) and experimental bench bracket (18) composition, it is characterised in that: the experiment chamber (19) is by bottom plate (7) and transparent organic glass
Panel (6) constitute, the experiment chamber (19) upper surface is connected to and in communication with cloth sink (12), and catch basin (20) are submerged in lower end surface
The water surface in, it is described experiment chamber (19) side end face with flow over air duct (17) be connected to and in communication with, conduct is opened wide in another side end face
Air inlet (5), the crossing current air duct (17) upper surface, which is equipped with, presses chamber (14), and pressure chamber (14) upper surface is equipped with multiple blowers
(13), low portion of neck is equipped with multiple closable measuring wind speed mouths (15)；The cloth sink (12) is cavity structure, surrounding and upper end
Face is all closed, through the water distributor (11) for having a uniformly distributed aperture in cloth sink (12), the water inlet of the water pump (1) with catchment
Slot (20) is connected to and in communication with, the water outlet of the water pump (1) after regulating valve (2) and water ga(u)ge (3) by water lines (8) from
The both ends of bottom plate (7) side of corresponding experiment chamber (19) of cloth sink (12) are connected on the water distributor (11) in cloth sink (12)；Institute
The upper level for stating the panel (6) of transparent organic glass is disposed with multiple tracer injection holes (16).
2. according to claim 1 for studying the device of crossing current filler matrix band flow characteristics, it is characterised in that: described
Test fixed tested crossing current filler matrix band (9) on the bottom plate (7) of chamber (19), the top of crossing current filler matrix band (9)
Along 5~8cm lower than bottom plate (7) top, left and right relative to experiment chamber (19) between two parties, and not with the panel of transparent organic glass (6)
Contact.
3. according to claim 2 for studying the device of crossing current filler matrix band flow characteristics, it is characterised in that: work as cross
Flow filler matrix band (9) in short-term than bottom plate (7) height, the height of crossing current filler matrix band (9) lower edge to catch basin (20)
Plate (4) are sealed up on air inlet (5) in degree range.
4. according to claim 2 for studying the device of crossing current filler matrix band flow characteristics, it is characterised in that: described
The size for testing chamber (19) is maximum sized 1.2~1.5 times of crossing current filler matrix band (9)；The bottom plate (7) and panel (6)
Spacing it is adjustable according to the wave height of matrix band (9), and the spacing of bottom plate (7) and panel (6) it is bigger by 3 than the wave height of matrix band (9)~
5mm。
5. according to claim 1 for studying the device of crossing current filler matrix band flow characteristics, it is characterised in that: described
Gauze (10) are wrapped up on water distributor (11), the free end of gauze (10) reaches tested crossing current filler matrix band (9) test surfaces
Upper end, effective water distribution diameter of gauze (10) and tested crossing current filler matrix band (9) is deeply equal, and water flow is enable equably to divide
Cloth is to the side surface of tested crossing current filler matrix band (9).
6. according to claim 1 for studying the device of crossing current filler matrix band flow characteristics, it is characterised in that: described
The aperture of uniformly distributed 2~3mm on water distributor (11), the center of aperture is away from 2~3cm.
7. according to claim 1 for studying the device of crossing current filler matrix band flow characteristics, it is characterised in that: described
The upper surface of cloth sink (12) is equipped with openable end cap, to form in crossing current filler on water distributor (11) in experiment
Aperture in the deeply corresponding range of effective water distribution diameter of piece (9) is closed with adhesive tape.
8. a kind of experiment using the device as claimed in claim 1 to 7 for being used to study crossing current filler matrix band flow characteristics
Method, which is characterized in that the steps include: firstly, tested crossing current filler matrix band to be fixed on to the bottom plate of experiment chamber, adjusting water
Flow control valve reads the registration of water ga(u)ge, and water corresponding to tested crossing current filler matrix band single side surface is made by formula (1)
Flow control is under the spray density of experiment condition:
In formula, Q indicates the flow of water, m3/h；A indicates that effective water distribution diameter of tested crossing current filler matrix band is deep, m；B expression is filled out
The wave height of material, m；ρ indicates the spray density of cooling tower, (m3/h/)m2；Then, the electric machine frequency for adjusting blower, is existed with anemobiagraph
Measuring wind speed mouth multiple spot on air inlet and pressure chamber equidistantly measures wind speed, calculates separately two respective measured values in position
Average value reaches the mean wind speed of operating condition setting, and two surveyed mean deviations is required to have no more than 2% side
Effect；Quantitative tracer is drawn with syringe again, it is desirable that tracer density and clear water density are almost the same, and do not dissolve in short term
Water is injected into tested crossing current filler matrix band surface perpendicular to the direction of bottom plate by tracer injection hole, while shooting note
Record tracer diffusion process and it is corresponding at the time of；Finally by image procossing, the angle of flare of water flow can be measured and in list
Residence time in the height of position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910183793.8A CN109827747B (en) | 2019-03-12 | 2019-03-12 | Device and method for researching water flow characteristics of cross flow filler forming sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910183793.8A CN109827747B (en) | 2019-03-12 | 2019-03-12 | Device and method for researching water flow characteristics of cross flow filler forming sheet |
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| CN109827747A true CN109827747A (en) | 2019-05-31 |
| CN109827747B CN109827747B (en) | 2024-05-31 |
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| CN201910183793.8A Active CN109827747B (en) | 2019-03-12 | 2019-03-12 | Device and method for researching water flow characteristics of cross flow filler forming sheet |
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