JPS6210634Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a spirally wound packing used in cooling towers, and its purpose is to effectively distribute sprayed water to both the inside and outside of the packing. The purpose is to improve cooling capacity.

Conventionally, a round countercurrent cooling tower is equipped with a spiral packing made of a corrugated bent sheet, and water is sprayed onto the tower using a rotating water sprinkler. As shown in the perspective view in Fig. 5, the spiral packing is wound with band-shaped sheets Ta and Tb interposed at positions lower and intermediate than the upper end of the wavy and bent sheet W, and is connected to the rotating water sprinkler. Due to the action of centrifugal force, the direction of the jetted water is not perpendicular to the sprinkler pipe, but is inclined toward the outer circumference at a slight angle. Therefore, most of the water jetted from the rotary sprinkler hits the inner circumferential surface of each rolled sheet of the spiral-shaped packing, and only the water that has rebounded from the inner circumferential surface adheres to the outer circumferential surface. This is disadvantageous because only the inner circumferential surface functions and the outer circumferential surface hardly functions.

The present invention has been made to solve the above-mentioned problems, and spacers are provided protrudingly on the inner and outer surfaces of at least the upper end of each spirally wound sheet, and spacers are provided between the spirally wound sheets. The present invention is characterized in that a band-shaped isolation sheet is provided at the upper end of the rolled sheet, interposed between the spacers so as to be hit by water sprayed from above.

The present invention will be explained below with reference to illustrated embodiments. Fig. 1 is a simplified perspective view of the main parts of the invention, and Figs. 2 to 4 show the structure and function of the packing of the invention. This is a simplified diagram, in which 1 is a wavy bent sheet, 2a and 2b are strip-shaped isolation sheets, 3 and 4 are spacers, and 5 is a water sprinkling pipe of a rotary water sprinkler.

The above-mentioned wavy bent sheet is rolled up one end in turn and rolled into a spiral shape. On the inside, strip-shaped isolation sheets 2a and 2b are attached at the upper end position and the middle position, respectively, and these sheets 2a and 2b It is in contact with the outer circumferential side of the part that is inside and is wound inwardly, and is successively interposed between the inside winding and the outside winding to isolate them. The isolation sheet 2a at the upper end may be parallel to and perpendicular to the wavy bent sheet 1 as shown in FIG.
The upper edge of the sheet is parallel to and perpendicular to the wavy sheet 1, but the upper edge is placed at a higher position than the wavy sheet 1 by an appropriate distance h, or the sheet is placed at an angle Θ with respect to the wavy sheet 1 as shown in FIG.
to have a slope of

The spacers 3 and 4 are provided at appropriate positions on both sides of the wavy bent sheet 1, and the wavy bent sheet 1 is wound in a spiral shape.
The spacer 3 on the inner surface side and the spacer 4 on the outer surface side are opposed to each other, and the isolation sheet 2a is sandwiched and supported between them.

With the above configuration, the water sprayed from the water sprinkling pipe 5 of the rotary water sprinkling device is jetted in the circumferential direction and flows as shown in FIGS. 2 to 4. That is, the water jetted in the circumferential direction collides with the wavy bent sheet 1 of the filler and the upper band-shaped separating sheet 2a. A portion of the water that collides with the wavy bent sheet 1 is bounced back, but most of the water flows down along the inner surface of the sheet 1. In addition, some of the water that collides with the upper isolation sheet 2a bounces back, but most of it flows down along the same sheet 2a. However, since the strip-shaped isolation sheet 2a has a narrow vertical width, the flowing water falls as water droplets along the way. The fallen water adheres to the outer or inner surface of the wavy bent sheet due to the force of the wind blowing up from below.

The configuration shown in FIG. 2 performs the standard function as described above, but the upper end position of the strip-shaped isolation sheet 2a may be made higher than the upper end of the wavy bent sheet 1 by an appropriate distance h as shown in FIG. Alternatively, as shown in FIG. 4, by setting the strip-shaped isolation sheet 2a at an angle Θ with respect to the wavy bent sheet 1 in accordance with the jetting angle of water coming out of the water pipe, the sprayed water can be transferred to the wavy bent sheet 1. It is possible to further improve the effect of evenly distributing the material on the inner and outer surfaces of the surface.

When a comparative test was carried out using the same type of cooling tower with and without the strip-shaped isolation sheet, the temperature difference with and without the strip-shaped isolation sheet was 45°C to 46°C, indicating an improvement in cooling performance of 1°C.

The present invention has the above-mentioned configuration and functions, and has excellent effects such as improving cooling performance by uniformly distributing water ejected from the water sprinkling pipe of a rotary water sprinkling device onto both sides of the wavy bent sheet of the spiral packing. be.

[Brief explanation of the drawing]

Fig. 1 is a simplified perspective view of the main parts of the present invention, Figs. 2 to 4 are simplified views of the structure and function of the inventive packing, and Fig. 5 is a conventional packing. FIG. 1 is a wavy bent sheet, 2a and 2b are strip-shaped isolation sheets, 3 and 4 are spacers, and 5 is a water sprinkling pipe of a rotating water sprinkling device.

Claims (1)

[Scope of utility model registration request] Spacers are provided protrudingly on the inner and outer surfaces of at least the upper end of each spirally wound sheet, and a band-shaped isolation sheet interposed between the spirally wound sheets is exposed to water sprayed from above. A packing for a cooling tower, characterized in that the packing is provided at an upper end position of the rolled sheet, interposed between the spacers.