JPS63210594A - Hermetically closed type cooling tower - Google Patents

Abstract

PURPOSE:To improve the cooling efficiency of the cooling tower by suspending each unit plate constituting each wetted deck in parallel to a blast direction further arranging a coil in a substantially horizontal direction in parallel to the blast direction, and interposing a dispersion plate between the coil and the wetted deck. CONSTITUTION:Each unit plate 41 constituting each wetted deck 4 is suspended in parallel to the inflow direction of air into the tower body 1, and a plurality of coils 2 are arranged at a predetermined interval in respective upper and lower wetted decks 4 and 4. The coils 2 are arranged in a substantially horizontal direction in parallel to a blast direction A, and respective ends of the coils 2 are connected to branch headers 210 and 220 extending in the horizontal direction. Further, an inlet header 21 and an outlet header 22 are perpendicularly arranged on one side surface within the tower body 1 and the branch header 210 is connected to the inlet header 21 and the branch header 220 to the outlet header 22. On the other hand, grid-like or mesh-like dispersion plates 3 are disposed between the coils 2 and the wetted decks 4 located at the upper positions of the coils. Thus, air within the tower body flows smoothly, and a heat-exchange by a vapor-liquid contact occurring when cooling water passes through the wetted decks is sufficiently carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a closed cooling tower that cools a fluid to be cooled circulating within a coil by forced draft and evaporative heat exchange with cooling water.

(Prior art and its problems) As this type of closed cooling tower, for example,
There is one proposed in Publication No. 573.

In this cooling tower, filling material and coils are arranged vertically alternately inside the tower body, and cooling water that is cooled by gas-liquid contact is sprayed onto the surface of the coil while passing through the filling material to cool the inside of the coil. Although the system cools the circulating fluid to be cooled, there have been cases where the cooling water dripping from the filler is not evenly distributed over the coil surface.

That is, since each unit plate constituting the filler hangs down at a predetermined interval, the cooling water flows down the surface of each unit plate and drips from its lower edge at a predetermined interval. For this reason, there is a problem in that the cooling water is not evenly distributed over the coil surface, and the liquid to be cooled flowing inside the coil is not sufficiently cooled.

Furthermore, since the coils are piped in a direction substantially perpendicular to the ventilation direction, there is a problem in that the flow of wind weakens in the inner part of the tower body, reducing the cooling efficiency due to gas-liquid contact.

The present invention solves the problems faced by such conventional cooling towers, and provides a closed type cooling tower with excellent cooling efficiency.

(Means for solving the problem) The present invention provides a closed cooling tower in which a plurality of fillers are provided vertically in a tower body and a coil is arranged between each filler.
The unit plates constituting the filling material are suspended in parallel to the ventilation direction, and the coils are piped in a substantially horizontal direction parallel to the ventilation direction, and a dispersion plate is interposed between the coil and the filling material. It is characterized by the fact that

EMBODIMENT OF THE INVENTION Hereinafter, the specific structure of this invention is demonstrated in detail based on an Example.

(Embodiment) Fig. 1 is a half-sectional view showing an embodiment of the present invention, and Fig. 2 is a perspective view of the main parts of the cooling tower shown in Fig. 1, in which 1 is a tower body; 2 is a coil, 3 is a dispersion plate, and 4 is a filler.

A blower 11 is provided in the upper central part of the tower body 1, and a water receiving tank 12 is provided in the lower part thereof. Further, a water sprinkling tank 13 is provided on the upper side of the tower body 1 in close proximity to the blower 11 . The water sprinkling tank 13 and the water receiving W112 are connected via a water sprinkling pipe 51 and a pump 5, and the cooling water stored in the water receiving tank 12 is pumped up to the water sprinkling tank 13 and is drilled into the bottom of the water sprinkling tank 13. It is dispersed through a number of holes.

Below this water spray 'm1B, a plurality of fillers 4 are arranged in the vertical direction. Each unit plate 4 constituting the filler 4
1 hangs down parallel to the direction of air inflow into the tower body 1 (the ventilation direction shown by arrow A in the figure), and a plurality of coils 2 are installed between each of the upper and lower filling materials 4 and 4. Piping is done at predetermined intervals. The coil 2 is piped substantially horizontally parallel to the ventilation direction A, and each end is connected to a horizontally extending branch header 210, 220.

Further, an inlet header 21 and an outlet header 22 are vertically piped on one side of the tower body 1, and the branch header 210 is connected to the inlet header 21, and the branch header 220 is connected to the outlet header 21. It is connected to 22. As a result, the fluid to be cooled that has flowed in from the inlet header 21 flows into the coil 2 from the branch header 210, and
20, allowing circulation via the outlet header 22.

On the other hand, between the coil 2 and the filler 4 located above the coil 2, a dispersion plate 3 having a lattice shape or a mesh shape is disposed. This dispersion plate 3 is for dispersing the cooling water dripping from the filler 4 and uniformly spraying it on the surface of the coil 2.If it can produce this dispersion effect, it can be made of the above-mentioned lattice or mesh shape. It is not limited to the configuration and can take any appropriate configuration. Further, this dispersion plate 3 may be used by stacking the upper and lower layers, and if necessary, the coil 2 and the coil 2
It may be interposed between the filling material 4 and the filling material 4 below.

(Operation and effects of the invention).

As described in detail above, in the present invention, fillers and coils are provided in multiple stages in the vertical direction within the tower body, and the coils are piped in a substantially horizontal direction parallel to the ventilation direction, so that the air inside the tower body does not interfere with the coils. The cooling water flows smoothly without being distorted, and heat exchange through gas-liquid contact is sufficiently performed when the cooling water passes through the filling material.

In addition, the cooling water that has been sufficiently cooled while passing through the filler is dispersed by a distribution plate disposed above the coil and sprayed on the coil surface without any separation, so that the cooling water circulating inside the coil is is efficiently cooled.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a half-sectional view of a cooling tower, and FIG. 2 is a perspective view of a main part of the cooling tower shown in FIG.

Claims (1)

[Claims] In a closed type cooling tower in which multiple stages of fillers are provided in the vertical direction within the tower body and a coil is arranged between each filler, the unit plates constituting the filler are suspended parallel to the ventilation direction, and the coils A closed type cooling tower, characterized in that the pipes are arranged in a substantially horizontal direction parallel to the ventilation direction, and a distribution plate is interposed between the coil and the filling material.