The characteristics of type of the first, cooling tower

The cooling tower is to gather the aerodynamicist, thermodynamics, the fluid enzymology, chemistry, biochemistery, the material enzymology, quiet, the dynamic state structure mechanics, processing technology etc. various course for comprehensive outcome of the integral whole.In order to change the function of the quantity more, fluid matter the cooling is also to have another the factor, changing quantity more and having another the process that effect synthesize.The cooling tower press water and airs opposite flow the condition dissimilarity, the different cooling tower of type is excellent and inferior, is the cooling tower industry on academically long-term endless debatable problem, this kind of dispute emolliently promote cooling tower of technical development, at at issue and each avoid from the longus short, make the cooling tower technique continuously perfect, decline to consume toward the economy energy, lift high-efficiency, lower the investment etc. the target is continuously the technique progress.The cooling tower thermodynamic energy function quality, voice is high and low and consumes to give or get an electric shock the size, the water how much is a key that measures the cooling tower quality good and bad, is the customer and designer is in choose use cooling tower again and again investigate compare most the view note of focus.

A, against the current tower:

1, the water is in the tower in the filler, the water is from top to bottom, air from under but up, both fly to a cooling tower.

2, the against the current cooling tower thermodynamic energy function good, divide three cool off the segment:
The ① cloth water machine arrives a this jejunum of filler, this water temperature is higher, so still can pass calories air.
The ② filler water and the air hot cross - segment.
The filler of ③ goes to gather the pond jejunum to pour the segment of water, the water is cool off to call it as" the tail effect" at this.The northern water temperature can descend 1-2 ℃s in the our country.On the say, the against the current tower compares the crosscurrent tower under the condition of same, the filler physical volume small 20% is or so, the more reasonable and cold effect of hot cross - process of the against the current tower is high.

3, go together with the system of water to stop, pour the filler of water to keep to sweep not easily not easy aging, wet through the reflux sterigma and defend the jelly to turn the ice measure more easy.Have another the pedestal can combine the design, the winter circulates or stops to open the breeze machine all with the annexable and single pedestal of the water temperature amount of water need.

4, the construction installs the check to make up hair and face easy, the expenses is low, in common use in air condition and industries bigly, medium-sizedly cool off circulate water.

Two, crosscurrent tower:

The l, water is in the tower in the filler, the water is from top to bottom, the air flies to the tower from the level outside the tower to fly to present inside both perpendicular just hand over a kind of cooling tower.In common use in voice of request strict residents' area, is the air condition field to use the more cooling circulation tower.Advantage:Economize on energy, the water pressure is low, the breeze sterigma, also install the low speed electrical engineering and have no a moderate breezes of water to move the voice , filler and go together with the water system check to fix the convenience.

2, can construct the basal to have another the set to place at will with the building shape, start the single pedestal or have another the set cooling tower respectively according to the water temperature need.

3, should what to notice is:Want to have the more filler physical volume when frame want to have another the hot cross - of 40%, the filler is easy aging, go together with the bore of water to stop, defend freeze easily not good, wet through the reflux greatly.The advantage of the crosscurrent tower is exactly the weakness of the against the current tower.

Three, spray fog well ventilated have no filler cooling tower:

The adoption sprays fog to spray the mouth gearing to enter the breeze in the cooling tower bottom upper part specially, spraying fog to send to the breeze and the tower crests to line up two kinds of methods of breeze from the Mayday machine.Spray hot water through spray a hour of inside the mouth to produce to flow to become the small fog form to turn the jet inside , make fog form existence, heading up with the stream as well two cooling time limited efficacies of the whereabouts against the current.Fog turn even have no caval phenomenon, cool off the effect stability, electric power depletion low, the water rate 0.01%, need not filler, build the low life span of price longus, match the national standard of GB7190.1-1997.Use the scope metallurgy, food, chemical engineering, high and muddy, heat, antisepsis cooling tower.

Four, close the type cooling tower

1.The closing type cooling tower is a kind of deformities and developments of the traditional cooling tower.It is a kind of to evaporate the type cooling tower actually, the combination of the water cooler and wet type cooling tower, it is the evaporation type cooling tower of the lie type, the craft fluid flows through in the palatine canal, air at took care of to outflow, both do not get in touch with with each other.Water in the tower bottom reservoir from circulation pump aspiration after, send to go toward palatine canal to spray to pour down outside and evenly.With the craft type fluid hot water or make the cold elixir and take care of the outside air and don't get in touch with, become a kind of to close the type cooling tower, pass to spray to pour the to build up of water to transmit heat the effect of spread the quality.

2.The closing type cooling tower be applicable to to circulation the fluid matter requests various higher cooling system, there is applied foreground in the electric power, chemical engineering, steel, food and many industry sections.On the other hand, with get empty the cold type heat exchanger to compare, evaporate the type cooling tower to make use of the palatine canal the evaporation latent heat of the side water, make the air side transmit heat spread the quality to show the to build up, also have the obvious advantage.

The design study of the second, cooling tower

A, The tower ketone body research

1, the cooling tower transduction breeze device:

The ① transduction aerofoil:Lead the aerofoil digit constitution at enter the transduction breeze of the upper part device of the place with a draught, its function is for making into the good luck of the place with a draught become the smooth form, avoid at close to into the upper part of the place with a draught to produce the whorl to flow the area, enter sophisticated effect that the right angle of the place with a draught cause with the cancellation.
But at under say the circumstance and must establish to lead the aerofoil:
A, pour the device of water to prop up the beam bottom in accordance with enter the upper part elevation of the place with a draught hour;
B, be the h/ L it than big in 0.6 or enter the wind velocity of the place with a draught below 4 ms/ s;

The ② enters the place with a draught blinds:On trial the certificate will use the amount of breeze to descend to 94% obviously into the constitution of the blinds of the place with a draught, the total resistance coefficient increases 22.5%, enter place with a draught last the good luck whorl flows the obvious increment of area, making the current of air inside the tower distribute the deterioration, design in shouldn't consider.

2, the breeze machine transduction breeze device:

The ① breeze machine imports a height of ex- constringency:Current of air at accept the machine of water above of jejunum gradual constringency enter the breeze machine breeze tube, this call it as the constringency segment, when the constringency segment is highly not enough, at accept the water machine, the top will produce the air whorl to flow the area, and produce the anti- current of air in pour device of water, enlargement the air resistance inside the tower, lower the cooling effect, so should guarantee an its height of constringency in cooling tower design.Establish the h'- a height of constringency, d- breeze machine diameter.On trial certificate:An opposite and high h of constringency'/ the d is no smaller than 0.5-0.6.

The ② breeze machine enters the place with a draught transduction to flow the facilities:The a, the breeze machine enters the place with a draught in addition to guaranteeing the enough constringency segment outside, can also establish the transduction to flow the facilities, to avoid a four Capes of constringency inside the tower to produce the whorl to flow the area.The transduction flows the facilities to make a current of air of constringency even to distribute, reducing the function of the kinetic energy depletion.B, lead to flow the facilities contain three kinds of forms:Last under of pedestal type, arc type, the type curve type, among them, the curve an effect of the type is best.The pedestal type that the steel wire net asbestos cement and the reinforced concrete lamellas put together to pack already adoption in design that sets up the tower lately, the glass steel transduction of the type curve type flows the turn because the creation installs the convenience.General use in old tower reformation.

3, the kinetic energy recovery a breeze tube:

The breeze tube proliferation segment is to send pass the air in the tower with the certain speed into the atmosphere, lower the breeze tube to export the current of air speed and can raise the breeze machine work breeze quantity or reduce the breeze luck to go the axial power.Speak on this meaning, the breeze tube exports the more strong air speed of area more low, but the proliferation of the air is to obey the certain regulation of, if the design is not reasonable, will appear the current of air to leave the wall, creation the whorl flow, enlarge resistance;If the breeze tube is too high and uneconomical.Therefore, only the reasonable line type then can guarantee under the condition of the breeze tube height is lower, the design becomes the breeze tube of attain the kinetic energy recovery purpose, is just the most reasonable breeze tube.The strong wind tube presses height to is divided into three segment:The ① enters the place with a draught to gather to annoy the segment, general is a 1.2-2 ms, its line type had better press the surname argument argument square distance or parabolas to beg the proptosis.The ② larynx straight line segment, general is high for 0.3-0.5 ms, this mainly is satisfy a biggest gearing angle, leaf slice the work has to request enough and highly.Its top end should high proptosis leaf a midline 200 mms is above.The ⑧ spreads the segment, presenting the trumpet form, the line type and lead lines clip the Cape proper take 9 °s, be the proptosis tower wind velocity big and proper clip the Cape sterigma some.Spread the height of the segment proper take(0.35-0.5) the D, the D is a breeze machine diameter.The purpose line up the wet air to the breeze tube above 8-10 ms.

Two, go together with the device of water:

1, go together with the influence of the even upon the cooling tower effect of the water and can't neglect.In the big and medium-sized cooling tower general adoption enzyme immobilization the type goes together with the method of water, the enzyme immobilization type go together with the water contain palatine canal the type goes together with the water and type of cisterns to go together with the water two kinds of.The adoption cistern type go together with the water and will occupy equal one part of areas in the against the current tower, and when the current of air passes the sink round to flow the enzyme separation, consume the kinetic energy, increase the well ventilated resistance, so applied in the against the current tower design the palatine canal type goes together with the water.

2, have of adoption gradually the stretch type sprays, type of annulus to spray, a type to spray ;Usher in the tower contain American Mali company of new type of spray , French type HUA LAN2 PEN etc., among them, many layers flow type effect is better, the drop of water that it sprays to splash is thinner, presenting the stereoscopic globosity drop of waters.Go together with the water more even, and have no blank center and the blank annulus girdles, its weakness is to heading up to spray the height about the 500-600 mms.Design should notice to avoid it short.Reflect the type to spray in the last few years most because of going together with the water function superiority to get extensive application, go together with the water to spray newly currently, supply water the pressure to design in the 0.5 kgs/ c ㎡ .(1.5 meter water pillars of the cloth pipe line)

3, the crosscurrent tower is proper to go together with the water with the type of cistern, its top establishes to eliminate and can go together with the water capitis, go together with the pond and should have the enough depth, among them water deeply in order to spray the mouth diameter more than 600%, the surface establishes the certain protection above highly, the big tower is a 100 mms, the small tower can gradually reduce.

Three, accept the machine of water:

The constitution accept the purpose of the machine of water is for accepting the drop of water that exports to float in addition to the breeze tube, reduce to float the influence upon the environment and waters to measure the loss.Currently the effect compare good of PVC have another the wave to accept the machine of water already extensive applied in the design, accept the rate of water 1/1000 low speed the hour consider slightly.

Four, filler:

Filler is the cooling tower spread hot of cardinal parts." Compare the surface grow" want to be big, is big, spread the quality coefficient Ka and cool off the coefficient Ω and want to be big to the allotment ability that the water flows compatibly, the current of air resistance △ P/ r wants the sterigma, pressing the filler form the cent, having a little a type and thin film types.The thermodynamic energy function of the thin film type good, the physical volume sterigma, build the price low.The thermodynamic energy function of the intravenous drop type is bad, but it stop, glues to hang not easily, when fluid matter is bad also can adapt.

The third, we to the manufacturing method of the cooling tower

A, public cooling tower economy energy and a control :

1, the cooling tower thermodynamic energy function quality, voice is high and low and consumes to give or get an electric shock the size and float the water how much is a key that measures the cooling tower quality good and bad, also is design the section and customers to pay attention to together of focus.The new generation cooling tower meets with five patent techniques, having already shoulded have extensively in because voice , float water but forbid use of a culture and education residents' area.

2, the ① lowers the cooling tower and cans consume and should lead the breeze tube and can raise the amount of breeze and recover to move to press in the tower proptosis place with a draught constitution.
The super and cooling tower of ② breeze machine is new leaf's type that a kind of breadth leaf, the strong longus, space warp, curved combine, having the higher pressure coefficient and the discharge coefficients, can attain the higher breeze to press in the lower premise turn soon, the breeze quantity value.
List of ⑨ soon the electric motor is a work under the condition of wasted electric power, the most reasonable with the air temperature change but change the electric motor to turn soon, should adopt annually" the mutation twists the mutation to adjust very much soon" electric motor economical give or get an electric shock to consume big in 52%, the nighttime lowers a 5 dBs( A) .
Concerning a problem of ④ :" A standard of the city district" GB3096-93 made the explicit provision.The cooling tower voice mainly comes from the breeze machine, is drenched the area and decelerates the machine, electric motor and supports.The breeze machine voice belongs to an up in the air not easy of the low frequency to reduce, pouring the voice of water to belong to the easy of high to reduce.The voice moves the Mr. rate type:W:The Π PZD2U6/1680 C3s knows the voice of the breeze machine to move the rate to become the direct proportion with 6 powers adjust soons, with diameter of 2 powers become direct proportion.
The ⑤ breeze machine leaf an iliotibial tract to distort the adoption forerunner of can control the whorl design method to make leaf crest and medium the area is have great capacity in a source of radiation of a discharge of leaf bad, lower the whorl to flow the voice and tail vestige broadband voices.
The ⑥ our way of doing is:
A, according to a request of different district, carry on the resistance calculation, the pressure calculation to the different cooling tower of type, the thermodynamic energy indol test after, choose to go together with various" a breeze machine and electric motors";
The b, voice requests the adoption mutation in the strict region to adjust soon electric motor;
C, can establish to eliminate a machine or shield to hide to block the voice ;
D, the constitution" the dried shrimp waist" in the cooling tower proptosis place with a draught, lead to voice uninfluenced district.
E, at be drenched the area bottom to add to eliminate a pad to carry on" pour the water" voice's control to attain the a biggest restriction enzymes of the residence environment to allow the value.

Two, set up wrong to decelerate the machine to use on" industry" cooling tower:

The cooling tower profession adopts the leather belt deceleration machine, wheel gear to decelerate the machine, unauthorized biography to move to decelerate the machine as mobile dint source of breeze mostly, being called the crest place type deceleration motive machine;

Easy 损 , elongation of leather belt of ① , beat slippery, the efficiency is low, the life span is short;
The ② wheel gear decelerates the machine and unauthorized biographies to move to decelerate the machine, voice high, axial grow easy the flection jump about circulate unsteady;
The ③ cooling tower hull ketone body carries the lotus to aggravate to result in the tower ketone body rock, circulating the long tower ketone body deformities.
The ④ set up wrong to decelerate the machine to adopt a curved faces cone wheel gear, the function carries in the lotus of the wheel gear from enter the to match to escape from it is gradual increment that match reduce gradually of.So the voice is low, the operation is steady, the efficiency is high and loads the ability big, spread to move ratio big, structure tightly packed;
⑤ And other wheel gearses spread the dynamic deceleration machine to compare the machine weight quantity to no longer be bear by the cooling tower, can reduce the thin tower wall, lowering the manufacturing cost;
The ⑥ receives benefit to shield the function in the cooling tower, compare together specification of planet wheel gear decelerate the machine voice to lower 8 decibels, the ratio leather belt type reduce 5 decibels.Can prolong the life span for 10 years of long.

The fourth, cooling tower is nasty to need the problem for resolve

The nation that our country is a to lack the fresh water seriously, the economy uses the force of the current at go necessarily.Evolve to change with each passing day along with the cooling tower manufacturing industry, the active cooling tower market the competition is increasingly vigorous, some domestic and international in recent years cooling tower factory the not in accordance with cooling tower design standard, make standard, check before acceptance the method, performance test standard, don't carry out the cooling tower to choose the type and check before acceptance and use the provision.Change to use to the customer irresponsiblely not a few substitute the material to" work carelessly" to go together with all and not reasonablely to use the small to carry on greatly to be to cheat sex competition falsely with the electric motor, the breeze machine, spread all over etc. of the river north, Shandong, Guangdong ground toward " the street visits the shot company" that the customer peddle after even using the false and inferior accessories combination.Thus the benefit leave to the oneself, pass on the others to the disaster of method is all like that.Because multiuser also does not understand, also did not check whether qualified means, install to tried the function to reduce the heat to also approve up.Cause after a lot of cooling towers install because of not enough and serious water of a people , the thermodynamic energy function, usually bad machine etc. the reason invest the reformation again, increasing the customer burden, the customer should pay attention to these concealment with draw lessons from.Only beat the evil ways, make the cooling tower have the preface competition under the condition of fair reasonable, then can attain the cooling tower business flourishing.

L, above-mentioned be advantageous to the competition surely, promote the technique progress the price reasonable.Pass by to practice to evolve the place that the cooling tower profession needs the improvement urgently:
The ① cooling tower breeze tube pattern and size.
The choice of the ② cooling tower breeze machine.
The ③ breeze machine and the tower wall iliotibial tract to interspace.
The ④ small scaled tower breeze machine and the tower ketone body proptosis place with a draughts install the position.
The ⑤ cooling tower cloth water machine with spray the choice .
The filler of ⑥ and the tower types prepare the situation.
The cooling tower of ⑦ increases to establish in addition to the category choice of the machine of water.
The cooling tower of ⑧ constructs a reasonable and standard choice.
Not enough etc. of the ⑨ domestic and international most crosscurrents tower thermodynamic energy function.

2, owing to the cooling tower exists the above-mentioned problem, for the sake of the exaltation glass steel cooling tower technique level, for the sake of the original material and the engineering investments of the economical equipments, need to tidy up, restructure the technique market of medium small scaled glass steel cooling tower and produce the present condition urgently.Restructure the glass steel cooling tower market, begin from the technique first.This includes to unify the glass steel cooling tower enzyme classification, specification and make the standard diagram and technique requests.Re- carry on the qualifications reviewing to the manufactory house of the existing medium small scaled glass steel tower.To those basically without the technique power, have no equipments and have no the factory house of qualified and legal diagram paper to want to cancel it produces the qualifications.Lack to the manufacturing condition of, the want of shortage that the deadline restructure.Should practice to produce the standard system of permit and professions.Mark clearly the category, specification that it produces the scope, tower and use the standard diagram paper number, and periodically be taken out the kind tower to carry on the check and test from the customer or wait for the proptosis luck product outside the factory by the national department concerned of review to match to quell to carry out the project.