RU2002187C1 - Cooling tower - Google Patents

Abstract

Usage: in thermal energy for cooling circulating water. SUMMARY OF THE INVENTION; the cooling tower includes a tower 1 with an air inlet window 2 at the bottom, located above the drainage basin 3, and a sprinkler placed adjacent to the air inlet 2 and made in the form of inclined plates 8 installed in rows to form channels for the passage of air, as well as a water distribution tray 5. mounted above the sprinkler with a gap. Inclined plates 8 are mounted in rows at an angle of 10-20 °; overlapping the entire width of the row, and the channels between the rows of sprinklers and the gap between the sprinkler and tray 5 are made equal to 0.25 0.75A and 0.10 0.75A, respectively. where A is the width of the sprinkler 2 silt

Description

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The invention relates to devices. used in heat power to cool recycle water.

A known cooling tower comprising a tower with an air inlet window at the bottom, a catchment basin with an offset and a sprinkler placed adjacent to the air inlet window, made in the form of inclined plates forming rows with channels for air passage, as well as a water-splitting tray installed with a gap over the gel. The cooled water is supplied to the water distribution tray, flows through its perforated bottom in the form of numerous jets and enters the upper row of inclined plates. Already in the gaps between the water distribution chute and the upper row of inclined plates, the effective interaction of the water jets with the air flow blown through them appears: the jets are thinned as they move downward and crushed into droplets, a developed one.; continuously updated phase contact surface. Particularly high interaction efficiency is realized when jets and water droplets collide with rotated xMocfbto inclined plates: numerous small drops of secondary crushing with a huge phase contact surface appear. blowing (ada air flow. Such interactions are repeated in all channels between the rows of inclined plates. As a result, the known cooling tower is characterized by high cooling efficiency of the circulating water. The known 1 cooling tower is the closest to the characteristic in terms of characteristics and the achieved result.

A disadvantage of the known cooling tower is that it does not realize many of the advantages of

interactions, which is a consequence of some structural factors. Thus, the inclined plates do not completely cover the width of the sprinklers, as a result of which there is a breakthrough of jets and drops of water without collision with the inclined plates of the series. The gaps between the rows of inclined plates, as well as between the water distribution chute and the sprinkler, are far from optimal values. All this reduces the efficiency of the well-known cooling tower, reduces its performance.

An object of the invention is to increase productivity by intensifying the interaction of water and air flows.

The goal is achieved in the proposed tower due to changes in the design

character: inclined plates are installed in rows at an angle of 10 ... 20 ° with the overlapping of the entire width of the row, and the channels between the rows of the sprinkler and the gap between the sprinkler and the water distribution tray are taken equal to 0.25 ... 0.75, respectively A and 0.10 ... 0.25 A, where A is the width of the sprinkler. The angle of inclination of the plates of 10 ... 20 ° ensures the transfer of jets and drops of water to the plates of the same name in the lower row and prevents breakthrough without contact with the lower row. The values of the channels between the rows of inclined plates

provide optimal conditions for the interaction between the flows of water and air and crushing when meeting with inclined plates. The gap between the sprinkler and the water distribution tray solves the same problem. The invention is explained in the attached drawing, consisting of 2 figures.

In FIG. 1 shows a cooling tower, cross section; mp FIG. 2 shows the location of the inclined plates on the jumper.

The cooling tower contains (Fig. 1) a tower 1 with an air inlet window 2, a catchment basin 3 with a blind area 4, and an irrigator including a water distribution tray 5,

the longitudinal walls of which are attached pendants 6. To the latter are attached transverse jumpers 7 with slots into which the inclined plates 8 are laid,

The laying of the inclined plates 8 in the jumpers 7 is shown in FIG. 2. The angle of inclination of the plates with respect to the horizon (angle a) is 1C - 20 °: they completely overlap the width of the row, i.e. are located

without gaps between the plates in plan.

In order to create optimal conditions for the interaction of flows, the gap between the water distribution tray 5 and the upper row of inclined plates (gap C) is equal to 0.10 - 0.25 of the sprinkler width (gap A). The size of the channels between the rows of glued plates (gap B) is determined by the limit of 0.25 - 0.75 A.

The cooling tower operates as follows.

The cooled water through the inlet pipe (not shown in the figures) is supplied to the water distribution tray 5, forming

there is a layer of some height. Through the perforation of the bottom of the tray 5, water flows downward and enters the upper row of inclined plates. Already in the gap between the tray and the upper row of inclined plates, an effective interaction arises between the air flow and water jets: the latter, as

the downward movements become thinner and, under the influence of the air flow, break up into droplets, forming a developed and continuously updated contact surface of the phases. When it hits the surface of inclined plates, numerous small drops of secondary crushing arise with a huge phase surface. As a result, an efficient heat and mass transfer process is implemented.

Water then flows onto the downstream row of inclined plates and the interaction cycle repeats. Such interactions are realized in all channels between the rows of inclined plates, which ensures intensification of the interaction of water and air flows, which is reflected in its higher efficiency.

From the lower row of inclined plates, the cooled water flows to the blind area 4 and,

moving downhill, it accumulates in the catchment basin 3. From pool 3, water is directed to the consumer.

The most complete cooling tower

realizes the advantages of cross-flow interaction: high air speeds during the passage of the sprinkler, crushing of the water stream into small jets and drops, effectively blown by the air stream,

large irrigation areas providing relatively small dimensions of irrigators. The latter, in addition to increased efficiency, improves the maintenance and repair capabilities of the sprinkler and cooling tower as a whole, which is an important additional advantage.

(56) Berman L.D. Cooling Towers M.-L. Gosenergoizdat, 1941, p. 104, FIG. 126.

Claims (1)

The claims A COOLING Tower, containing a tower located above the catchment area with an air inlet window at the bottom, an irrigation device placed adjacent to the air inlet window and made in the form of rows of inclined plates installed with the formation of channels for the passage of air, and also a water distribution system installed with a gap above the irrigator tray, characterized in that, in order to increase productivity by intensifying the interaction of flows water and air, the plates of each row are installed at an angle of 10 - 20 to the horizon and with the overlapping of the entire cross-sectional area of the row, and the channels between the rows of the sprinkler and the gap between the sprinkler and the tray made respectively 0.25 - 0.75 A and 0.10 - 0.25 A, where A is the width of the sprinklers. pc / fff 7 (ptse.Z