CN2185418Y - Closed evaporation cooling tower - Google Patents

Abstract

The utility model provides a sealed evaporation cooling tower, which can replace a plate and frame type heat exchanger in a high temperature water cooling circulation process and can enhance the cooling efficiency with making use of the evaporation heat being much larger than conduction heat. The utility model is characterized in that the shower pipe 8 with a nozzle 7 is arranged above a sealed box body 17, a fan is arranged out of the box body, a mist removing water collecting device 5 is also arranged above the shower pipe in the box body, and the mist removing water collecting device is a sheet combination being similar to S-shaped. The utility model has small ground occupying, little investment, simple structure and water-saving use, so the utility model is not only suitable for being used in metallurgical industry, but also suitable for cooling various media such as oil, ammonia, etc.

Description

Closed evaporation cooling tower

The utility model belongs to heat-exchange apparatus, and it is a kind of closed evaporation-cooled device.

Past, what use in the high-temperature service water cooling circulation technology was the hydrologic cycle cooling system that plate and frame heat exchanger and open cooling tower are formed at metallurgical works.The plate and frame heat exchanger carries out heat exchange by conduction, cold water is taken away the heat of hot water in the heat exchanger tube, thereby make the hot water cooling,, very big cold feed amount must be arranged for making hot water cooling endlessly, therefore use the plate and frame heat exchanger, except a major circulatory system is arranged, one pair of circulatory system also must be arranged, be stored in the pond after the hot water cooling after heat exchange heats up, return by pump, for recycling.So adopt the plate and frame heat exchanger, floor space is big, the investment cost height, water consumption is big.In addition, if the water circulation system that adopts the open-type cooling tower to form, recirculated water directly contacts with air, easily affected by environment, the metallurgical works environment is more abominable, and water for industrial use water quality is bad, it is more to contain suspension, and dustiness is higher in the air, more makes water quality deterioration, make pipeline produce fouling and clogging easily, be unfavorable for the continuous operation of the circulatory system, and adopt sealed cooling tower, recirculated water does not directly contact with air, cycle water is not affected by environment, can keep water quality preferably.

The object of the present invention is to provide that a kind of industrial use, floor space are little, small investment, form are simple, the closed wet cooling tower of using water wisely, water purification sealing and circulating that cooling effectiveness is high.

The utility model is that the master of plate and frame cooling tower, a pair circulatory system are concentrated on one, it comprises: it is that circulating water pool, casing have the circulated sprinkling pump outward that heat exchanger tube, bottom half are arranged in casing, water pipe, the casing, it is characterized in that above casing, having the shower of band nozzle, blower fan is arranged outside casing, also have the demisting and water saving device above the casing internal sparger pipe, it is the sheet assembly of class S type, and its effect is that the mist pearl in the hot-air is accepted, turn back to the pond, and hot-air enters in the atmosphere.When hot water flows in heat exchanger tube, the circulated sprinkling pump drinks up the water in case bottom cycle pond, spray on the heat exchanger tube, blower fan blasts air from the outside simultaneously, shower water carries out a large amount of constant-temperature evaporations around heat exchanger tube, absorb latent heat, by means of heat exchanger tube outside evaporation of water, conduction and radiation, heat is passed to air drain, make the hot water cooling in the heat exchanger tube, casing is flowed out in the cooling back, be transported to the equipment place that needs cooling, hot water after the heat absorption returns closed evaporative cooling tower cooler, goes round and begins again, and recycles.Can determine the length of heat exchanger tube and the air quantity of blower fan according to the requirement of temperature drop.

The utility model utilizes heat of evaporation to be far longer than the cooling effectiveness that conduction heat improves cooling tower, and for example: every evaporation 1 kg water can be absorbed heat 585 kilocalories/20 ℃, 1 atmospheric pressure, and the intensification of 1 kg water only absorbs 10 kilocalories of heats for 10 ℃.This closed wet cooling tower is not only applicable to also can be widely used in the cooling of other medium in the metallurgical works high-temperature service cooling-water system, such as: the cooling of oil, ammonia etc. all can design according to this selects for use.

Fig. 1 is the schematic side view of this apparatus structure.

Fig. 2 is the shape schematic diagram of every of demisting and water saving device.

Label among Fig. 1 is: 1-circulated sprinkling pump, 2-circulating water pipe, 3-water inlet pipe, the 4-collector pipe of intaking, 5-demisting and water saving device, 6-shower, the 7-nozzle, 8-heat exchanger tube, 9-outlet pipe, the 10-blower fan, 11-hand-hole, 12-filling pipe, 13-supports footing, 14-overflow pipe, 15-mudhole, the 16-circulating water pool, the 17-casing.

Embodiment: this device uses in the bag-type dust removal system of discharging fume in last steel three factory's electric furnace stoves, adopt four of closed wet cooling towers, every discharge is 50 tons/hour, so per hour have 200 tons of water purification through electric furnace high temperature section dust removing tube, water temperature raises, by the pipeline flow-direction underground tank, by pump hot water is squeezed into closed wet cooling tower, return cooling pipe in the electric furnace high temperature section dust removing tube through cooled water purification, so recycle, so far moved more than a year, respond well, water quality is good, seldom fouling in the pipeline, burnout phenomenon does not take place in the high temperature section cleaning shaft, has alleviated the maintenance load of dust pelletizing system greatly, and annual 164.64 ten thousand tons of the water yields of saving.

Closed wet cooling tower model: 6FZT-D27-50.

Specification: long 2.87 meters * wide 1.3 meters * high 2.5 meters.

Referring to Fig. 1, heat exchanger tube 8 is a copper pipe, weighs 490 kilograms, 19 millimeters of calibers, 1 millimeter of wall thickness.Three row's nozzles 7 are arranged on the shower 6, and every row has 9 nozzles.The air quantity of blower fan 10 is 1.45 myriametres ³/ hour, the material of demisting and water saving device 5 is a fiberglass, every shape is as shown in Figure 2.Concrete size: l=180 millimeter, a=50 millimeter, b=30 millimeter, c=15 millimeter, α=120 °, β=150 °.Its slices are worn, be combined into the demisting and water saving device, the sheet spacing is 2.5 millimeters, and the gross area is 34.58 meters ²

Claims (2)

1, a kind of closed wet cooling tower, comprise: casing (17), water pipe, heat exchanger tube (8) is arranged in the casing, bottom half is circulating water pool (16), and casing has circulated sprinkling pump (1) outward, it is characterized in that having above casing the shower (6) of band nozzle (7), blower fan (10) is arranged outside casing, above the casing internal sparger pipe, also have demisting and water saving device (5).

2, closed wet cooling tower according to claim 1 is characterized in that demisting and water saving device (5) is the sheet assembly of class S type.

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