JPH073157Y2 - Cross flow type cooling tower with drain plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a cross-flow cooling tower, and more particularly to a cross-flow cooling tower in which packings are stacked in multiple stages and filled in a main body.

<Prior Art and its Problems> In this type of cooling tower, the circulating cooling water tends to be unevenly distributed toward the center of the main body of the cooling tower due to the air flow entering from the outside air intake. In accordance with this tendency, the filler is shifted downward toward the center of the main body to increase the heat exchange efficiency (see, for example, FIGS. 2 and 3 of Japanese Utility Model Publication No. 61-33424).

This degree of deflection becomes smaller when the amount of intake air decreases, and as a result, the circulating cooling water that is flowing down can flow down to the outside air intake portion almost all the way, especially at the center of the body. The amount of water that does not flow down on the filling material at the lowest stage and falls directly under the lower water tank increases, and water droplets easily pass out of the cooling tower body through the outside air intake.

Furthermore, since there are no obstacles in the gap between the fillers stacked on top and bottom, the air flow is easier to flow than other parts, and the heat exchange due to the latent heat action of the circulating cooling water and the air causes this gap. There is also a case where water droplets riding on this passing air flow are scattered outside from the exhaust port and contaminate clothes such as passersby.

In order to suppress the scattering of the water droplets, in the cooling tower described in the above publication, the outer side of the packing is shifted toward the center of the tower toward the bottom of the packing, the packing is provided in a plurality of stages in the tower, and the packing is vertically overlapped. Recirculation cooling in which a mesh or other suitable intermediate material that can freely pass water is interposed between the objects to stack the upper packing material on top of the lower packing material, and then the intermediate material is dropped from the outside of the packing material above it. Although the water collecting plates that receive water are connected in series, since the middle fish and the water collecting plate are connected, if the middle fish becomes clogged or damaged, it is necessary to remove and replace the middle fish together with the water collecting plate. Not only that, it takes time and effort to maintain it, and along the horizontal part of the water collecting plate and the lower surface of the intermediate material that continues to this, the intermediate material passes through the gap between the upper part of the lower packing and the cooling water is directed to the cooling tower exhaust port. Carry it as water droplets, and then press it from the exhaust port. There is a problem to Lee over.

An object of the present invention is to provide a cross flow type cooling tower which solves the above-mentioned problems with a simple structure on the market.

<Means for Solving the Problems> In order to solve the above problems, the present invention confronts a plurality of louver plates having a horizontal length direction that forms an outside air intake of the cooling tower in the body of the cooling tower. In addition, at least two stages of packing composed of a plurality of packing plates are completely overlapped in the vertical direction, and a net-like upper side through which water can freely flow in the main body of the cooling tower between the upper and lower packings. A loading shelving for packing is arranged, and an elongated draining plate is located at approximately the same height as the shelving described above, parallel to the louver plates inside the louver plate group, and over the entire width of the outside air intake port. It is mounted horizontally, and this draining plate is formed in an L-shaped cross section consisting of a standing wall portion and an inclined portion connected to the standing wall portion. This inclined portion is inclined inward and downward as much as the inclined portion of the louver plate. The inner edge portion is between the upper and lower fillers. In the gap, below the shelf and above the lower packing, the standing wall of the draining plate is sufficiently high to prevent air from entering the gap between the upper and lower packings. The cross-flow type cooling tower with a draining plate is characterized in that it has a size.

<Operation and Effect> The operation of the present invention thus constructed will be described together with the effect.

The circulating cooling water sprinkled on the upper packing comes into contact with the air flow sucked into the main body of the cooling tower through the louver plates while flowing down on the surface of the upper packing, and receives the latent heat of vaporization. After being cooled, it flows into the lower packing, which is filled in the upper packing in a state where it is completely overlapped in the vertical direction, passes through the upper packing tray, and then falls and falls again on the surface of the lower packing. Is contacted with the air flow sucked during the flow and is cooled by the latent heat of vaporization.

During the operation of this cooling tower, even if the rotation speed of the blower is reduced due to a decrease in the outside air temperature, and the amount of suction air is reduced, the draining plate always causes the circulating cooling water to flow down near the outside air intake of the upper packing. Part of the cooling tower is scattered inside the main body of the cooling tower, that is, in a state of being unevenly distributed in the flow direction of the air flow, so that the falling position of the cooling tower to the lower water tank is The position separated from the inlet can be prevented from passing through between the louver plates and scattering outside the main body of the cooling tower.

The inner edge of this draining plate is the gap between the upper and lower fillers,
Since it is located below the shelf and above the lower packing, of the circulating cooling water that flows down, the cooling water that flows down along with this near the outside air intake is forcibly forced into the cooling tower body. It can be deflected inward and can be guided directly onto the lower packing without passing through the mounting shelf, and the scattering of the circulating cooling water from the outside air intake can be further prevented.

In addition, since the standing wall of the draining plate has a size high enough to prevent air from flowing into the gap between the upper and lower packings, air flows along the gap between the upper and lower packings, that is, the bottom of the loading shelf. The flow can be prevented from flowing, and water droplets can be prevented from scattering from the exhaust port of the cooling tower.

The above effect can be exhibited in the state where the upper and lower packings are completely overlapped in the vertical direction, and as a result, the installation space of the cooling tower can be reduced.

<Example> A typical embodiment of the present invention will be described with reference to the drawings.

In the figure, A is a cross-flow type cooling tower, and a packing composed of a plurality of packing plates 11a, 12a facing a plurality of louver plates 10 forming the outside air intake B and having a horizontal length direction. 11 and 12 are vertically aligned and completely overlapped to fill the main body 14 of the cooling tower A in two stages.

A net-like mounting rack 16 for the upper packing 11 and water that can freely pass between the upper and lower packings 11 and 12 is arranged in the main body 14.

A slender drainer plate 15 having an L-shaped cross section, which comprises a standing wall portion 15c and a slanted portion 15a connected to the standing wall portion 15c, is located at substantially the same height as the shelf 16 described above, and is located inside the louver plate 10 group.
One of them is attached to the vertical column of the louver plate 10 in the horizontal direction over the entire width of the outside air intake port B in parallel with.

This draining plate 15 is similar to the shape of the louver plate 10 and has a size and shape of about twice, and its inclined portion 15a is inclined inward and downward as much as the inclined portion of the louver plate 10,
The inner edge portion 15b is a gap between the upper and lower fillers 11 and 12, and is located below the placing rack 16 and above the lower filler 12, and the standing wall portion 15c of the draining plate 15 is The height dimension is sufficient to prevent air from flowing into the gap between the upper and lower filling numbers 11 and 12.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic front view of an embodiment of the present invention. Explanation of main symbols in the figure 15 …… Drainer.

Claims (1)

[Scope of utility model registration request] 1. A packing comprising a plurality of packing plates facing a plurality of louver plates having a horizontal length direction forming an outside air intake of the cooling tower in a main body of the cooling tower, and the packing is vertically arranged. In the cooling tower body, between the upper and lower packings, there is a mesh-like upper rack for packing upper packings, which allows water to pass freely. The plate is installed horizontally at the same height as the above-mentioned shelf and parallel to the louver plate inside the louver plate group and horizontally across the entire width of the outside air intake. It is formed in an L-shaped cross-section consisting of an inclined portion continuing to this, and this inclined portion is inclined inward and downward as much as the inclined portion of the louver plate, and its inner edge portion is between the upper and lower fillers. Located below the shelf and above the lower packing , Standing walls the vertical deflector board with crossflow cooling towers, characterized in that a sufficient height to prevent the inflow of air into the gap between the packing of the deflector board.