CN102221418B - System for measuring water-wind counter flow humid air parameter - Google Patents
System for measuring water-wind counter flow humid air parameter Download PDFInfo
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- CN102221418B CN102221418B CN2011101495224A CN201110149522A CN102221418B CN 102221418 B CN102221418 B CN 102221418B CN 2011101495224 A CN2011101495224 A CN 2011101495224A CN 201110149522 A CN201110149522 A CN 201110149522A CN 102221418 B CN102221418 B CN 102221418B
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Abstract
The invention discloses a system for measuring a water-wind counter flow humid air parameter. The system comprises a gas-water separating and sampling part, a temperature measuring part, a humidity measuring part and a pressure measuring part and can be used for measuring the temperature, the humidity and the pressure of humid air in spraying areas and rain areas of various types of industrial spraying air cooling equipment (such as cooling towers, evaporative condensers and the like). Under the action of a draught fan, humid air carrying small water drops enters a gas-water separating sampler, and the water drops are separated from the air flow without wetting a thermoelectric couple which is connected to a number display meter after passing through a sampling pipe, so that the humid air temperature of a water-wind counter flow area can be read. The humid air which is subjected to gas-water separation enters a specialized induced-duct dry wet ball thermometer, so that the air humidity of the water-wind counter flow area can be converted according to constant humidity content. A gas-water separator and the sampling pipe are connected to a differential pressure meter, so that the air pressure of the water-wind counter flow area can be measured accurately.
Description
Technical field
The invention belongs to the air parameter surveying instrument, particularly the measurement of industry spray cooling device (like cooling tower, evaporative condenser etc.) spray district and rain belt soft air temperature, humidity and pressure.
Background technology
The general industrial cooling tower, the heat water-spraying who needs cooling is to the packing area, and at filling surface and the soft air contact heat-exchanging that flows from bottom to top, the shower water after the cooling flows out from the below, packing area, falls into the pond through the rain belt.The side, rain belt is opened wide, and draws ambient, cool air and shower water heat exchange so that the induced draft fan at cooling tower top is taken out.After soft air in the environment ran into rain, with spray globule contact heat-exchanging, humidity increased; Soft air continues to be up to the packing area, and with the spray moisture film contact heat-exchanging of filling surface, temperature and humidity obviously improves; Soft air gets into the spray district after going out the packing area, and with the spray globule or spray water mist contact heat-exchanging, temperature and humidity further improves.The cooling power of cooling tower depends primarily on the heat and mass transfer performance of packing area moisture film and soft air, and strict cooling tower examination need know through soft air temperature behind the packing area what have increased, and how much soft air humidity increased, and how many humid air stream dynamic pressures reduces to.This will be at temperature, humidity and the pressure of spray district above the packing area and the measurement of the rain belt below packing area soft air.It is pointed out that air in spray district or the rain belt humidity that in general do not reach capacity, and when spray flux difference or ambient temperature and humidity not simultaneously, the air humidity in spray district or the rain belt is different.
The wet-and-dry bulb thermometer of precision height commonly used and good stability comes Measurement of Air humidity on the meteorology.Wet-and-dry bulb thermometer is made up of the identical mercury of two Gent systems, and wherein the mercury bulb of a thermometer bottom is evenly coated by wet gauze, so be called wet bulb.Wet gauze under capillary action constantly from it below the water box draw aqueous water, when air skimmed over wet bulb with the speed of 2.5～3m/s, the water evaporates on the wet bulb caused wet-bulb temperature to descend.So when soft air did not reach saturated humidity, wet-bulb temperature always was lower than dry-bulb temperature, just can table look-up according to the wet and dry bulb temperature value draws the relative humidity of air, or calculates the relative humidity of air according to formula.
The also available impedance hygrometer of humidity measuring, electric-capacity moisture metre, hair hygrometer, dew-point hygrometer or microwave moisture meter etc.
Which kind of hygrometer no matter, if hygrometer is put in spray district or rain belt, then hygrometer is just drenched at once, causes measuring losing efficacy.
Summary of the invention
The object of the present invention is to provide a kind of water wind adverse current soft air parameter measurement system, temperature, humidity and the pressure of water wind adverse current regional air can be measured by this system, and have the characteristics of precision height, good stability.
A kind of water wind adverse current soft air parameter measurement system provided by the invention is characterized in that, this system comprises gas-water separation sampling section, temperature survey part, moisture measurement part and the pressure survey part that is interconnected through a web member;
The gas-water separation sampling section comprises moisture trap sampling thief and sampling pipe, and the moisture trap sampling thief is connected with an end of sampling pipe through elbow, and the other end of sampling pipe links to each other with web member;
Temperature survey partly comprises armoured thermocouple and thermopair digital display meter, and the terminals of armoured thermocouple connect the table plug through thermopair and are connected with the thermopair digital display meter, and the temperature-sensitive end passes sampling pipe and elbow inserts the moisture trap sampling thief;
Moisture measurement partly comprises dry bulb thermometer, wet bulb thermometer, wet bulb water box, induced draft fan and first connecting line; Dry bulb thermometer all links to each other with web member through first connecting line with wet bulb thermometer, and wet bulb water box is positioned at the below of wet bulb thermometer;
Pressure survey partly comprises the differential manometer and second connecting line, and differential manometer links to each other with web member through second connecting line.
For avoiding hygrometer to be drenched by shower water, need will spray the soft air sampling of district or rain belt and guide to outside spray district or the rain belt, measure with hygrometer again.Because other hygroscopic precision is not high, the bad or too high reason of cost of stability is so the present invention selects the meteorological humidity of measuring the soft air of drawing of sampling with the high precision wet-and-dry bulb thermometer.
The effect of induced draft fan is to keep the soft air in the sampling thief to be mobile and to upgrade that the air inducing amount of induced draft fan can be adjusted to a desired value, to guarantee drawing soft air, is unlikely to the air flow field excessive interference to water wind adverse current zone again.The following air outlet of four-way is connected induced draft fan through air inducing flexible pipe and air inducing hard tube.The sampling soft air flows through dry bulb thermometer and the wet bulb thermometer of installing in the air inducing hard tube, can read dry-bulb temperature and wet-bulb temperature, and then calculate the soft air water capacity.When this measuring system is used, need " preheating " through tens minutes, treat in stable condition everywhere after, reading of data again.According to the principle of mass conservation, the soft air mass rate that flows into the sampling thief and the air inducing hard tube wet-and-dry bulb thermometer of flowing through is constant, and moisture mass rate wherein (being the soft air water capacity) also is constant.So the air water capacity at air inducing hard tube wet-and-dry bulb thermometer place just equals the air water capacity of sample point, can read the soft air temperature of sample point by the thermopair digital display meter.Like this, the soft air temperature of sample point and water capacity be cicada all, just can calculate the sample point humid air relative humidity, has so just recorded the air humidity in water wind adverse current zone indirectly.
The air pressure and the atmospheric pressure of spray district and rain belt are more or less the same, and general pressure gauge is difficult to accurately reflect the difference between them, but can measure spray district and the air pressure of rain belt and the difference of atmospheric pressure with differential manometer.In a Measuring Time section, atmospheric pressure is stablized constant, and can measure through barometer, so just can accurately learn also that through differential manometer spray is distinguished and the soft air pressure of rain belt.
Description of drawings
Fig. 1 is the synoptic diagram of a kind of embodiment of water wind adverse current soft air parameter measurement system, among the figure, and 1, the moisture trap sampling thief; 2, armoured thermocouple; 3, elbow; 4, sampling pipe; 5, four-way; 6, the sealing plug; 7, thermopair connects the table plug; 8, the thermopair digital display meter; 9, four-way below fast joint; 10, the air inducing flexible pipe; 11, air inducing hard tube fast joint; 12, the air inducing hard tube; 13, dry bulb thermometer; 14, thermometer support; 15, wet bulb thermometer; 16, the thermometer cork; 17, wet bulb water box; 18, frame; 19, induced draft fan; 20, four-way top fast joint; 21, the pressure flexible pipe; 22, the differential manometer fast joint; 23, environment pressure flexible pipe; 24, differential manometer.
Embodiment
Below through by embodiment the present invention being described in further detail, but following examples only are illustrative, and protection scope of the present invention does not receive the restriction of these embodiment.
Water wind adverse current soft air parameter measurement system provided by the invention can be divided into gas-water separation sampling section, temperature survey part, moisture measurement part and pressure survey part, and this four part connects an interface of web member separately.In this instance, web member adopts four-way 5.
The gas-water separation sampling section comprises moisture trap sampling thief 1 and sampling pipe 4, and moisture trap sampling thief 1 is connected with sampling pipe 4 through elbow 3.Sampling pipe 4 can be a hard tube, also can be flexible pipe.Moisture trap sampling thief 1 can be assembled together with elbow 3 in advance.Armoured thermocouple 2 and the axis of sampling pipe 4 and the parallel axes of four-way 5 are screwed to 4 last times of sampling pipe so sampling pipe 4 is screwed to first interface of 3 last times of elbow and four-way 5, and armoured thermocouple 2 can be avoided reversing impaired.
Moisture trap sampling thief 1 comprises the box body blade 1b and the flow-guiding umbrella 1c of moisture trap box body 1a, angle of depression air intake.Box body blade 1b is positioned on the moisture trap box body 1a, and the shape of it and box body 1a adapts, as when moisture trap box body 1a is cylindrical shape or four prism type; Box body blade 1b can correspondingly get truncated cone-shaped, or gets truncated rectangular pyramids shape.The shape of flow-guiding umbrella 1c and moisture trap box body 1a adapt, and it covers moisture trap box body 1a, can avoid shower water to fall into air inlet.
Temperature survey partly comprises armoured thermocouple 2 and thermopair digital display meter 8.Digital display meter 8 can separate with armoured thermocouple 2.Second interface of four-way 5 is equipped with sealing plug 6; The terminals of armoured thermocouple 2 connect table plug 7 through thermopair and are connected with thermopair digital display meter 8; The temperature-sensitive end of armoured thermocouple 2 passes sealing plug 6, sampling pipe 4 and elbow 3 inserts moisture trap sampling thiefs 1, and sealing plug 6 can be divided into two halves up and down, take off the sealing plug after; Four-way 5 can screw down with sampling pipe, and connects table plug 7 from thermopair and withdraw from.Armoured thermocouple 2 is flexible, it is folded puts together to case with moisture trap sampling thief and elbow gets final product.
Moisture measurement partly comprises dry bulb thermometer 13, wet bulb thermometer 15, wet bulb water box 17, induced draft fan 19 and first connecting line.Connecting line comprises first fast joint 9, air inducing flexible pipe 10, frame 18, air inducing hard tube fast joint 11 and air inducing hard tube 12.
Induced draft fan 19 all is fixed on the frame 18 with air inducing hard tube 12, and air inducing hard tube 12 can directly be linked the air inlet of induced draft fan 19.Through air inducing hard tube fast joint 11, the 3rd interface and the sampling pipe 4 of air inducing flexible pipe 10, first fast joint 9 and four-way 5 link up air inducing hard tube 12 successively.First fast joint 9, air inducing flexible pipe 10, air inducing hard tube fast joint 11 can make air inducing flexible pipe 10 between four-way 5 and air inducing hard tube 12, install and remove fast.
Above air inducing hard tube 12, open two jacks, be respectively applied for the dry bulb thermometer 13 and wet bulb thermometer 15 that meteorologic survey is used is installed, jack place dried, wet bulb thermometer all is furnished with thermometer cork 16, in case leak-stopping wind, and avoid lens-fronted tubing to squeeze and bump breakage.Dried, wet bulb thermometer patchhole next door is welded with thermometer support 14, tilts to avoid thermometer.
Air inducing hard tube place below wet bulb thermometer 15 opens a hole, and transparent wet bulb water box 17 is equipped with in the below, hole, between the wet bulb of wet bulb water box 17 and wet bulb thermometer 15 conduit is installed; Be easy disassembly, conduit can adopt outer spiral shell short tube, and the interior spiral shell container that adopts organic glass is as wet bulb water box 17; Before the humidity measuring; Confirm that gauze parcel wet bulb is intact, after wet bulb thermometer 15 insertions were put in place, the gauze of hanging just arrived in the water box from from the hole, passing; Water just under capillary action, rises along gauze, with the wet bulb complete wetting.Regulate the air quantity of induced draft fan, make that the wind speed of blowing over wet and dry bulb is 2.5～3m/s, the standard of coincidence measurement wet and dry bulb temperature.Water on the wet bulb gauze can be seen the decline of water table in the transparent water box after evaporation a period of time; If during water level lower (as being lower than 10mm), then can suspend measurement in the water box, twist the subjacent water box moisturizing.
Pressure survey partly comprises the differential manometer 24 and second connecting line, and differential manometer 24 links to each other with the 4th interface of four-way through second connecting line.
Second connecting line comprises second fast joint 20, sampling pressure flexible pipe 21, differential manometer fast joint 22 and environment pressure flexible pipe 23.
Environment pressure flexible pipe 23 is installed on the high voltage interface of differential manometer 24, is used to connect ambient atmosphere.Differential manometer 24 links up through the 4th interface and the sampling pipe 4 of sampling pressure flexible pipe 21 and four-way 5, makes it connect the soft air of spray district and rain belt.The 4th interface of four-way and differential manometer 24 low-voltage interfaces respectively are equipped with a flexible pipe fast joint (second fast joint 20 and differential manometer fast joint 22), and like this, sampling pressure flexible pipe 21 can mounting or dismounting fast between four-way 5 and differential manometer 24.During the pressure measurement difference, other two air outlets (i.e. second interface and the 3rd interface) of four-way 5 are all blocked, the soft air in stopple coupon and the sampling thief is static at this moment, so the soft air pressure at differential manometer 24 low aluminium hydraulic pressed connecting pipe places just equals the soft air pressure at sampling thief place.
After in-site measurement is intact, need disintegrate to native system, so that carry and transport.The step and the installation steps of dismounting are opposite basically.
Under the induced draft fan effect, near the soft air the gas-water separation sampling thief 1 can carry the little water droplet of part and get into the gas-water separation sampling thief.The little water droplet that density is more much bigger than soft air; Inertia is also much bigger than soft air; Getting in the process of gas-water separation sampling thief with soft air, because of flow direction acute variation and flow area acute variation, little water droplet can be retained down; Can not drench thermopair 2, and soft air can skim over thermopair and get into sampling pipe 4 and four-way 5.
During practical implementation, consider that sampling head will put in spray district or rain belt, and the thermopair digital display meter, do, wet bulb thermometer and differential manometer 24 be outside spray district or rain belt, so sampling pipe has 5～8 meters long.When avoiding in-site measurement, carry inconvenience because of oversize, during the whole measuring system design, considered the convenience of dismounting.
The above is preferred embodiment of the present invention, but the present invention should not be confined to the disclosed content of this embodiment and accompanying drawing.So everyly do not break away from the equivalence of accomplishing under the disclosed spirit of the present invention or revise, all fall into the scope of the present invention's protection.
Claims (5)
1. a water wind adverse current soft air parameter measurement system is characterized in that, this system comprises gas-water separation sampling section, temperature survey part, moisture measurement part and the pressure survey part that is interconnected through a web member;
The gas-water separation sampling section comprises gas-water separation sampling thief (1) and sampling pipe (4), and gas-water separation sampling thief (1) is connected with an end of sampling pipe (4) through elbow (3), and the other end of sampling pipe (4) links to each other with web member;
Temperature survey partly comprises armoured thermocouple (2) and thermopair digital display meter (8); The terminals of armoured thermocouple (2) connect table plug (7) through thermopair and are connected with thermopair digital display meter (8), and the temperature-sensitive end passes sampling pipe (4) and elbow (3) inserts gas-water separation sampling thief (1);
Moisture measurement partly comprises dry bulb thermometer (13), wet bulb thermometer (15), wet bulb water box (17), induced draft fan (19) and first connecting line; Dry bulb thermometer (13) all links to each other with web member through first connecting line with wet bulb thermometer (15), and wet bulb water box (17) is positioned at the below of wet bulb thermometer (15);
Pressure survey partly comprises the differential manometer (24) and second connecting line, and differential manometer (24) links to each other with web member through second connecting line;
Gas-water separation sampling thief (1) comprises the box body blade (1b) and the flow-guiding umbrella (1c) of moisture trap box body (1a), angle of depression air intake; Box body blade (1b) is positioned on the moisture trap box body (1a), and flow-guiding umbrella (1c) covers moisture trap box body (1a), and three's shape is complementary.
2. water wind adverse current soft air parameter measurement system according to claim 1 is characterized in that first connecting line comprises first fast joint (9), air inducing flexible pipe (10), frame (18), air inducing hard tube fast joint (11) and air inducing hard tube (12);
Induced draft fan (19) all is fixed on the frame (18) with air inducing hard tube (12), and through air inducing hard tube fast joint (11), air inducing flexible pipe (10) links to each other with web member with first fast joint (9) air inducing hard tube (12) successively;
Have two jacks that are used for dry bulb thermometer (13) and wet bulb thermometer (15) in air inducing hard tube (12) top.
3. water wind adverse current soft air parameter measurement system according to claim 2; It is characterized in that; Two jacks of dry bulb thermometer (13) and wet bulb thermometer (15) are furnished with cork (16), and the jack installed beside has the thermometer support (14) of avoiding thermometer to tilt, open a hole at the air inducing hard tube place of wet bulb thermometer (15) below; Wet bulb water box (17) is installed in the below, hole, between the wet bulb of wet bulb water box (17) and wet bulb thermometer (15) conduit is installed.
4. water wind adverse current soft air parameter measurement system according to claim 1 is characterized in that, second connecting line comprises second fast joint (20), sampling pressure flexible pipe (21), differential manometer fast joint (22) and environment pressure flexible pipe (23);
Environment pressure flexible pipe (23) is installed on the high voltage interface of differential manometer (24), and an end of sampling pressure flexible pipe (21) links to each other with web member through second fast joint (20), and the other end links to each other with differential manometer (24) through differential manometer fast joint (22).
5. water wind adverse current soft air parameter measurement system according to claim 1 is characterized in that, the thermopair interface of web member is equipped with sealing plug (6), and sealing plug (6) is divided into two halves up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101495224A CN102221418B (en) | 2011-06-03 | 2011-06-03 | System for measuring water-wind counter flow humid air parameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101495224A CN102221418B (en) | 2011-06-03 | 2011-06-03 | System for measuring water-wind counter flow humid air parameter |
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| Publication Number | Publication Date |
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| CN102221418A CN102221418A (en) | 2011-10-19 |
| CN102221418B true CN102221418B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101495224A Expired - Fee Related CN102221418B (en) | 2011-06-03 | 2011-06-03 | System for measuring water-wind counter flow humid air parameter |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108267475A (en) * | 2018-02-02 | 2018-07-10 | 上海市特种设备监督检验技术研究院 | A kind of finned tube testing device for heat transferring performance based on Real-Time Atmospheric humidity and pressure |
| CN109946125B (en) * | 2019-04-28 | 2024-03-26 | 深圳国技仪器有限公司 | Dry-wet ball method gas temperature and humidity sampling device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5062869A (en) * | 1989-03-08 | 1991-11-05 | Rosemount Inc. | Water separator for air data sensor |
| CN2511906Y (en) * | 2001-01-18 | 2002-09-18 | 马建 | Frequency converting air conditioner with moisture surface and controlled by vaporous parameter |
| CN201622758U (en) * | 2009-11-19 | 2010-11-03 | 江苏技术师范学院 | Experimental apparatus for measuring state parameter of moist air |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030075049A1 (en) * | 2001-10-19 | 2003-04-24 | Larsen Michael T. | Gas/liquid separator including a liquid trap filter |
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2011
- 2011-06-03 CN CN2011101495224A patent/CN102221418B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5062869A (en) * | 1989-03-08 | 1991-11-05 | Rosemount Inc. | Water separator for air data sensor |
| CN2511906Y (en) * | 2001-01-18 | 2002-09-18 | 马建 | Frequency converting air conditioner with moisture surface and controlled by vaporous parameter |
| CN201622758U (en) * | 2009-11-19 | 2010-11-03 | 江苏技术师范学院 | Experimental apparatus for measuring state parameter of moist air |
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| CN102221418A (en) | 2011-10-19 |
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