A kind of corrosion resistant cooling tower coil radiator
Technical field
The utility model relates to technical field of heat exchange, specifically relates to a kind of closed cooling tower coil radiator that is used for the cooling of equipment such as metallurgy, casting, refrigeration.
Background technology
At present; The cooling tower that is used for the employing fluid heat exchange mode in fields such as metallurgy, casting, refrigeration mainly is divided into open type cooling tower and closed cooling tower; The open type cooling tower causes fouling in pipeline and the cooling system because its recirculated water is contaminated easily, thereby lowers cooling effectiveness; In addition, the filler easy-weathering in the open type cooling tower needs often to change, and therefore, its operation expense is higher.And the circulating cooling medium of closed cooling tower, it does not contact with air, does not also need special pond, and its operation expense is low, and therefore long service life, has obtained using widely.
Existing closed cooling tower generally comprises a housing; The middle part is provided with coil radiator in housing; The bottom of housing is a bosh, and the top of housing is provided with the blower fan of cooling usefulness, between blower fan and coil radiator, spray equipment is set; Bosh links to each other with spray equipment through the spray water pump; Working fluid (medium) is sent into the water inlet of coil radiator with a water circulating pump, and with the heat transferred coil pipe, the water return outlet from radiator flows out working fluid then when the coil pipe through radiator.And the heat of radiator coil distributes through radiation on the one hand; On the other hand; Blower fan through the cooling tower top carries out mandatory air-cooled, owing to below the side of cooling tower is positioned at radiator, locate to be provided with the air intake grid, and the blower fan at top is outwards extracted hot-air out; The outer cold air of cooling tower enters in the cooling tower through the air intake grid under suction function; And through radiator coil the heat of coil surface is taken away fast, the air of heating is discharged from the cooling tower top, thereby reaches the effect of cooling heat dissipation.When temperature was higher, the simple air-cooled needs that can't satisfy heat radiation can start the spray water pump, and the cooling water in the bosh is sprayed on the radiator coil through spray equipment, carry out mandatory water-cooled.In addition, in order to improve heat conduction velocity, coil radiator generally is to adopt good copper pipe or the aluminum pipe of heat-conductive characteristic to process.
But there is following problem in above-mentioned coil radiator: every group of radiator coil tube all is vertically to be arranged in the same plane; Thereby shower water is difficult to directly be sprayed onto on the horizontal straight tube of radiator coil tube bottom; As the one of which be by the water on the horizontal straight tube that sprays radiator coil tube top on the horizontal straight tube that drops onto the radiator coil tube bottom after the heating again; The water that sprays gap between two groups of radiator coil tubes then directly drops onto in the bosh of bottom, so its cooling effect is restricted; In addition, when cooling contained the Korrosionsmedium of acid, alkali etc., copper pipe or aluminum pipe radiator were corroded easily, thereby shorten its service life, and the price of copper pipe is higher, have more increased the cost of radiator.
For example; A kind of disclosed on the Chinese patent document " method for manufacturing copper and aluminium composite heating radiator "; Its publication number is CN101342656A; This scheme is to penetrate in the hole of the section bar inside of being processed by aluminium alloy through the heat radiation copper pipe with water flowing, and the part of section bar is stretched out at the two ends of copper pipe need reserve enough length so that weld, after the heat radiation copper pipe penetrates; Mode through machinery or hydraulic pressure rises by itself and aluminium alloy extrusions and is connected together, then will with section bar rise the heat radiation copper pipe that is connected together with join the lumen welding.Technique scheme is compound through copper aluminium, can alleviate the weight of radiating tube, and reduces manufacturing cost, but still has the problem that cooling effect is poor, be difficult to cool off Korrosionsmedium.
The utility model content
The purpose of the utility model is the problem that the cooling effect that exists for the coil radiator that solves prior art is poor, be difficult to cool off Korrosionsmedium, a kind of good cooling results is provided, can cools off the coil radiator of Korrosionsmedium.
To achieve these goals; The utility model adopts following technical scheme: a kind of corrosion resistant cooling tower coil radiator, comprise some groups of horizontal bow font cooling coils, and said bow font cooling coil vertically is provided with; Its lower ending opening is a water inlet; Open upper end is a water return outlet, and dislocation is in the horizontal direction arranged between the horizontal straight tube of two neighbouring bow font cooling coils, and said bow font cooling coil adopts stainless steel tube to process.
Because between the adjacent two horizontal straight tubes of the bow font cooling coil of the utility model is that dislocation is arranged in the horizontal direction; Thereby can not block each other between two horizontal straight tubes up and down; Shower water can directly be sprayed on the more horizontal straight tube; And then improve the cooling effectiveness that sprays, reduce the energy consumption of spray equipment.In addition, stainless steel tube has excellent corrosion resisting performance, has good heat-conductive characteristic simultaneously, and bow font cooling coil adopts stainless steel tube to process, and has both helped reducing manufacturing cost, and has made it applicable to the cooling to Korrosionsmedium.
As preferably, said bow font cooling coil adopts stainless acid resistant steel to process, and can further improve its acid resistance, and then increases the service life.
As preferably, the inner surface of said bow font cooling coil is provided with the Parylene corrosion-inhibiting coating.This coating has very good corrosion resistance, not only helps increasing the service life, and can reduce the requirement to the stainless steel tube material simultaneously.
As preferably, the horizontal straight tube of said bow font cooling coil from top to bottom successively in the horizontal direction back and forth dislocation arrange, thereby form helical form.It helps medium and in bow font cooling coil, forms turbulent flow, thereby improves heat conduction velocity and efficient between medium and the cooling coil.
As a kind of replacement scheme of above-mentioned preferred version, the horizontal straight tube of said bow font cooling coil is progressively dislocation arrangement in the horizontal direction successively from top to bottom, thereby forms the step shape.Help reducing to the blocking of following horizontal straight tube, thereby can make the bigger cooling effect of shower water performance.
Another kind of replacement scheme as above-mentioned preferred version; With the interstice coverage of the horizontal direction of adjacent bow font cooling coil in; The horizontal straight tube of said bow font cooling coil is progressively dislocation and equidistantly arrangement in the horizontal direction successively from top to bottom, thereby forms the step shape.Thereby can guarantee that the shower water that is positioned at adjacent bow font cooling coil interstice coverage in the horizontal direction can spray on each horizontal straight tube of bow font cooling coil equably, brings into play the cooling effect of shower water to greatest extent.
As preferably, the horizontal straight tube of every bow font cooling coil all is from water inlet end to water side obliquely to be arranged.Therefore; In the whole cooling coil from the water return outlet of upper end to a height fall is all arranged the water inlet of lower end; Thereby can guarantee that the medium in the cooling coil can flow out by nature under the gravity effect; Therefore medium can't be accumulated in the cooling coil, cooling coil can be solved effectively in the winter time because of the problem of icing explosion.
In sum, the utlity model has following beneficial effect: good cooling results, can cool off Korrosionsmedium, and can be antifreeze.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model;
Fig. 2 is a kind of cross-sectional structure sketch map of the bow font cooling coil of the utility model.
Fig. 3 is the another kind of cross-sectional structure sketch map of the bow font cooling coil of the utility model.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further description.
In the embodiment shown in fig. 1; A kind of corrosion resistant cooling tower coil radiator of the utility model; Comprise some groups of equidistant horizontal bow font cooling coils 1; Every group of bow font cooling coil is made up of some horizontal straight tubes 2 and the semicircle tube connector 3 that connects the adjacent transverse straight tube, and each bends the font cooling coil and vertically is provided with and fixes through support, and its lower ending opening is a water inlet 4; Open upper end is a water return outlet 5, when water return outlet on the water inlet of lower end flows to of gravity that the medium in the pipe overcomes itself, can produce stronger turbulent flow.Bow font cooling coil can adopt stainless steel tube to process, so that it has good Corrosion Protection, and then applicable to the cooling to Korrosionsmedium.Certainly; In order further to improve corrosion resistance; Bow font cooling coil can adopt the stainless acid resistant steel in the stainless steel to process, and perhaps the inner surface at bow font cooling coil applies Parylene corrosion-inhibiting coating (trade name: synthetic fibre in the handkerchief, English: Parylene).
In the prior art; Every group of cooling coil normally is positioned at same perpendicular; Thereby top horizontal straight tube causes following horizontal straight tube easily and blocks, and following horizontal straight tube can't directly be drenched by shower water; Generally be spray on the top horizontal straight tube absorb heat after unevaporated shower water drop onto once more on the following horizontal straight tube, thereby the cooling effect of following horizontal straight tube can be affected.In order helping reducing, thereby to make the bigger cooling effect of shower water performance, and to help medium and in bow font cooling coil, form turbulent flow the blocking of following horizontal straight tube; Thereby improve heat conduction velocity and efficient between medium and the cooling coil, as shown in Figure 2, the horizontal straight tube of bow font cooling coil is dislocation arrangement back and forth in the horizontal direction successively from top to bottom; Thereby make bow font cooling coil form helical form; Under the same terms, the horizontal straight tube of every group of bow font cooling coil becomes two row in the horizontal direction, has increased the area of accepting shower water; Shower water can directly spray cooling to the horizontal straight tube of two row; Simultaneously, the spacing of the horizontal straight tube of the row of one on the vertical direction is increased, thereby help reducing top horizontal straight tube blocking following horizontal straight tube.
Further; As shown in Figure 1; The horizontal straight tube of every bow font cooling coil all is from water inlet end to water side obliquely to be arranged; Make in the whole cooling coil from the water return outlet of upper end to a height fall is all arranged between any 2 the water inlet of lower end, thereby when the winter of cold, radiator temporarily quit work, can guarantee that medium in the cooling coil can the nature outflow under the gravity effect; Can't accumulate medium in the cooling coil, therefore can solve effectively because of medium freezes and make the problem of cooling coil explosion.
Scheme as a kind of optimization; The arrangement of bow font cooling coil also can be adopted step shape structure as shown in Figure 3; That is to say; With the interstice coverage of the horizontal direction of adjacent bow font cooling coil in, all horizontal straight tube of this bow font cooling coil is progressively dislocation and equidistantly arranging in the horizontal direction successively from top to bottom, thereby forms the step shape.At this moment; The all projection of horizontal straight tube in horizontal plane are uniform dislocation arrangement in the radiator; Can avoid shower water directly to drop onto in the bosh of cooling tower bottom fully, can both spray cooling water equably on the every horizontal straight tube, bring into play the cooling effect of shower water to greatest extent.