CN111895810A - Fan induced draft counter-flow open type cooling tower - Google Patents

Abstract

The invention discloses an open-type cooling tower with a fan blowing air and a countercurrent flow, and belongs to the technical field of cooling towers. The fan-extracted counter-flow open cooling tower includes: tower body, several EC fans, water collector, water distribution pipeline with water inlet, several nozzles, packing structure, water baffle, air inlet shutter and water outlet A water collecting basin; a ventilation channel is arranged in the tower body, and several EC fans, a water collector, a water distribution pipeline, a number of nozzles, a packing structure, a water blocking plate and a water collecting basin are sequentially arranged in the ventilation channel from top to bottom. Several nozzles are communicated with the water distribution pipeline and are arranged at the bottom thereof; the air inlet louver window located between the water blocking plate and the water collecting basin is arranged on the front end face of the tower body; the present invention can effectively cool the hot water, and has a structure Simple and efficient.

Description

Fan extraction counter-flow open cooling tower

technical field

The invention relates to the technical field of cooling towers, in particular to a fan-drafted counter-current open cooling tower.

Background technique

Cooling tower is an important equipment of circulating cooling water system. Mechanical ventilation cooling towers are widely used in the circulating cooling water systems of chemical, petrochemical, metallurgy, textile, electric power and other high water-consuming industries and the circulating cooling water systems of civil air conditioners. It can be said that there is circulating cooling water. There are mechanical ventilation cooling towers.

The existing cooling tower has problems such as easy blockage of the water distribution system, easy aging of the water spray packing, small packing volume, and small moisture return. In the various types of cooling towers on the market, they account for a large proportion, and there is also the problem of low heat exchange efficiency.

SUMMARY OF THE INVENTION

In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to propose a fan-drafted counter-flow open cooling tower. The present invention can effectively cool the hot water, and has the characteristics of simple structure and high efficiency.

For this purpose, the present invention adopts the following technical solutions:

The invention provides a fan-drafted counter-flow open cooling tower, including: a tower body, several EC fans, a water collector, a water distribution pipeline with a water inlet, several nozzles, a packing structure, a water baffle, an air inlet shutter and a collection basin with a water outlet;

The tower body is provided with a ventilation channel, a plurality of the EC fans, the water collector, the water distribution pipeline, a plurality of the spray heads, the packing structure, the water blocking plate and the water collecting basin The nozzles are arranged in the ventilation channel from top to bottom in sequence; a plurality of the spray heads are connected to the water distribution pipe and are arranged at the bottom thereof; the air inlet located between the water baffle and the water collecting basin The louver window is arranged on the front face of the tower body.

Further, the water collecting basin is provided with a water replenishing port near the outer wall of the air inlet shutter.

Further, the bottom of the water collecting basin is provided with a sewage outlet.

Further, the outer wall of the water collecting basin is provided with an overflow port.

Further, a plurality of the EC fans are evenly distributed at equal distances.

Further, the number of the EC fans is 9, and the 9 EC fans are respectively embedded on the top of the tower body.

Further, the packing structure is formed by stacking a plurality of packing sheets for accommodating the packing.

Further, the number of the filler pieces is 3.

Compared with the prior art, the beneficial effects of the present invention are:

The invention can effectively cool the hot water, and has the characteristics of simple structure and high efficiency. The EC fan exhausted counter-flow open cooling tower can cool the hot water entering the water inlet, and the DC brushless maintenance-free motor with built-in intelligent control module of the EC motor is greatly simplified in structure, and the mechanical reliability of the motor operation is greatly improved. Enhanced, increased lifespan. The combination of multiple EC fans is spread on the top of the tower to increase the utilization rate of the air outlet of the cooling tower. To achieve the required cooling air volume, high energy saving, high efficiency, low noise operation.

Description of drawings

Fig. 1 is the structural representation of the fan-drafted counter-current open cooling tower provided by the specific embodiment of the present invention;

FIG. 2 is a schematic top-view structural diagram of a fan-drafted counter-flow open cooling tower provided by a specific embodiment of the present invention.

In the picture:

1. Tower body; 2. EC fan; 3. Water collector; 4. Water distribution pipe; 5. Sprinkler; 6. Packing structure; 7. Water baffle; 8. Air inlet shutter; 9. Water collecting basin; 11 , water inlet; 12, water supply outlet; 13, overflow outlet; 14, sewage outlet; 15, water outlet.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, on the premise of no conflict, the embodiments or technical features described below can be combined arbitrarily to form new embodiments. .

As shown in Figures 1 and 2, the fan-drafted counter-flow open cooling tower includes: a tower body 1, several EC fans 2, a water collector 3, a water distribution pipeline 4 with a water inlet 11, several nozzles 5, Packing structure 6, water blocking plate 7, air inlet shutter 8 and water collecting basin 9 with water outlet 15; the tower body 1 is provided with ventilation channels, several EC fans 2, water collectors 3, water distribution pipes 4, several The sprinkler heads 5, the packing structure 6, the water blocking plate 7 and the water collecting basin 9 are sequentially arranged in the ventilation channel from top to bottom; a plurality of sprinkler heads 5 are connected with the water distribution pipe 4 and are arranged at the bottom thereof; The inlet shutters 8 between the water collecting basins 9 are arranged on the front end surface of the tower body 1 .

The invention can effectively cool the hot water, and has the characteristics of simple structure and high efficiency. The EC fan 2 exhausts the air and the counter-flow open cooling tower can cool the hot water from the water inlet 11, and the EC motor has a built-in intelligent control module DC brushless maintenance-free motor, the structure is greatly simplified, and the EC motor is mechanically reliable. Sex is greatly enhanced and life expectancy increases. The combination of multiple EC fans 2 is spread on the top of the tower, which increases the utilization rate of the air outlet of the cooling tower. The cooling tower can achieve the required cooling air volume at low rotation speed through the heat transfer of cold air and hot water through the air inlet louvers 8, which is highly energy-saving. , High efficiency, low noise operation. When the cooling tower is in operation, the circulating hot water enters the water distribution pipe 4 from the cooling tower water inlet 11, and is evenly sprinkled on the packing structure 6 with filler through the nozzles 5 on the water distribution pipe 4, and the plurality of nozzles 5 are equidistant from the water distribution. The pipeline 4 is connected to achieve the effect of uniform spraying; after the EC fan 2 is started, the air is drawn into the tower, so that a negative pressure area is formed in the tower body 1, and the cold air is sucked into the ventilation channel in the tower body 1 from the air inlet shutter 8. The water flow falls vertically in the ventilation channel, and the air flow direction and the water flow direction form a nearly 180° heat exchange in the packing area, that is, the air flow is upward and the water flow is downward. The hot water heat exchange becomes cooling water from the packing structure 6 and falls through the packing to the collecting basin 9, and is discharged from the water port. The cold air becomes hot air after heat exchange, and is discharged by the EC fan 2 after passing through the water collector 3 . The water collector 3 can effectively reduce the drift rate of the cooling tower tower water and play a role in saving water. The water collector 3 can be made of plastic material. The water baffle 7 is used to divert the flow of water falling through the packing structure 6 into the collecting basin 9 to avoid splashing.

Further, a water replenishing port 12 is provided on the outer wall of the water collecting basin 9 close to the air inlet shutter 8 . The water replenishment port 12 is provided for cleaning and replenishing the water collecting basin 9 and for providing a part of the water for contacting heat transfer with the cold air entering the air inlet shutter 8 .

Further, the bottom of the water collecting basin 9 is provided with a sewage outlet 14 . The sewage outlet 14 is provided for sewage discharge, and when the collecting basin 9 in the tower body 1 needs to be cleaned, it is convenient to discharge the sewage in the tower collecting basin 9 .

Further, an overflow port 13 is provided on the outer wall of the water collecting basin 9 . The overflow port 13 is provided for when there is too much water in the collecting basin 9 in the tower body 1, so that the accumulated water can be discharged through the overflow port in time. A water valve can be installed to control the opening and closing of the overflow port 13, and the water valve is not shown in the drawings.

Further, several EC fans 2 are evenly distributed at equal distances. The number of EC fans 2 is 9, and the 9 EC fans 2 are respectively embedded on the top of the tower body 1 . Setting 9 EC fans 2 can cover the top of the tower body 1 and distribute them evenly, so that the cold air is evenly inhaled, and the inhalation efficiency is high.

Further, the packing structure 6 is formed by stacking several packing sheets for accommodating the packing. The cooling tower packing can be divided into multiple layers, and the layered area is equivalent to multiple water distribution, so uneven water distribution can be avoided; each packing sheet has a plurality of concave and convex parts (not shown in the drawings); The positions of the concave portion and the convex portion of the adjacent packing sheets correspond to each other and are respectively enclosed into a plurality of ventilation cavities, and the cold air can pass through the water curtain generated between the packing sheets.

Further, the number of filler pieces is three. Select 3 packing sheets to avoid too many layers of packing structure 6, resulting in too slow cold air conveying efficiency. Selecting 3 packing sheets for cold air can moderately grasp the time of passing through the water curtain between the packing sheets, so that the heat exchange process between cold air and hot water can be achieved. Moderate time.

The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the scope of the present invention. Scope of protection claimed.

Claims (8)

1. Fan convulsions open cooling tower against current, its characterized in that including: the device comprises a tower body, a plurality of EC fans, a water collector, a water distribution pipeline with a water inlet, a plurality of nozzles, a filler structure, a water baffle, an air inlet shutter and a water collecting basin with a water outlet;

a ventilation channel is arranged in the tower body, and the EC fans, the water collector, the water distribution pipeline, the spray heads, the filler structure, the water baffle and the water collecting basin are sequentially arranged in the ventilation channel from top to bottom; the plurality of spray heads are communicated with the water distribution pipeline and are arranged at the bottom of the water distribution pipeline; the air inlet shutter window positioned between the water baffle and the water collecting basin is arranged on the front end surface of the tower body.

2. The fan draft counterflow open cooling tower of claim 1, further comprising:

and a water replenishing port is arranged on the outer wall of the water collecting basin, which is close to the air inlet shutter.

3. The fan draft counterflow open cooling tower of claim 1, further comprising:

and a sewage draining outlet is formed in the bottom of the water collecting basin.

4. The fan draft counterflow open cooling tower of claim 3, further comprising:

the outer wall of the water collecting basin is provided with an overflow port.

5. The fan draft counterflow open cooling tower of claim 1, further comprising:

the EC fans are uniformly distributed at equal intervals.

6. The fan draft counterflow open cooling tower of claim 5, further comprising:

the number of the EC fans is 9, and the 9 EC fans are respectively embedded at the top of the tower body.

7. The fan draft counterflow open cooling tower of claim 1, further comprising:

the packing structure is formed by stacking a plurality of packing sheets for containing packing.

8. The fan draft counterflow open cooling tower of claim 7, wherein:

the number of the filler pieces is 3.

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