JPH033555Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an industrial cooling tower that uses water mixed with precipitable substances as water to be cooled.

[Conventional technology]

Blast furnace slag granulation production equipment is equipped with a large cooling tower to cool the water used for granulation production. This circulating water contains a mixture of fibrous hair-like substances and hard granular slag slag, which tend to easily precipitate, grow, and accumulate on water pipes and wet wall surfaces. Therefore, when this type of water is used as water to be cooled and is sprinkled in a cooling tower, there are problems of clogging of the water spray nozzles and problems of accumulation in the tower. For this reason, unfilled open type cooling towers are used as cooling towers for granulated water production equipment, and large-diameter nozzles and circular water sprinkling ports are used as water sprinkling devices.

[Problem that the invention attempts to solve]

Precipitate countermeasures must be taken in cooling towers for granulation manufacturing equipment as mentioned above, and even if improvements have been made with conventional ones, they are still not sufficient, and there are problems such as a decrease in the amount of circulating water due to blockage of the sprinkler system, and problems with the thermal performance of the cooling tower. deterioration and required frequent maintenance.

[Means to solve problems]

The purpose of this invention is to solve these problems.In an unfilled cooling tower, water to be cooled is sprinkled toward an open space in the tower through which air circulates. At the top of the space, a large number of water branch bars with a mountain-shaped cross section are stretched substantially horizontally with the mountain ridgeline in the center, and a gutter having a longitudinal slit-shaped opening at the bottom is placed above the water branch bars substantially horizontally. An unfilled type in which a curtain-like water film that falls from the slit-like opening of the gutter is divided into two by the ridge line of the water branching bar, and then falls into the open space in the tower. It provides cooling towers.

The cooling tower of the present invention will be described in detail below according to the embodiments shown in the drawings.

FIG. 1 schematically shows the water sprinkler system, which is the main part of the cooling tower of the present invention. In FIG. 1, 1 is a water branch bar, 3 is a gutter having a slit-shaped opening 2 at the bottom, and 4 is a water film flowing down from the slit-shaped opening 2 in a curtain shape. As shown in the figure, in the present invention, a large number of troughs 3 each having a slit-shaped opening 2 in the longitudinal direction at the bottom are stretched in parallel to each other in a substantially horizontal direction, and the water falls through the slit-shaped opening 2 of each trough 3. Each of the water film flows 4 on the vertical curtain is divided so that its thickness is bisected by the ridgeline of the water branching bar 1 having a chevron-shaped cross section, and each branched stream is caused to slide off each edge of this water branching bar 1. .
In other words, the water branching bar 1 is arranged horizontally below each gutter 3 so that the horizontal straight line of the linear slit opening 2 of each gutter 3 and the ridgeline of the water branching bar 1 are on the same vertical plane. to be installed. water branch bar 1
is a chevron-shaped bar with a ridgeline in the center,
On both sides of the ridgeline, there are equiangular and equal area surfaces (surfaces similar to the roofs of Gassho-zukuri) that slope symmetrically to each other. Therefore, the water film divided into two by the ridge slides down the surface of each roof and then falls downward from both ends of the roof in a symmetrical, divergent form, and the water film flows from below to above due to surface tension. Due to the resistance of the ventilation inside the tower, the water will eventually be dispersed into water droplets and sprayed. To supply cooled water to each gutter 3,
A main gutter 5 is arranged above each gutter 3 so as to be perpendicular to each gutter 3, and a water inlet 6 is connected to the bottom of the main gutter 5 so as to correspond to the position of each gutter 3. Mizuguchi 6
The water to be cooled may be allowed to fall into each gutter 3 from below. In addition, the water to be cooled to the main gutter 6 is supplied through a branch pipe 7 above and parallel to the main gutter 6.
This is preferably carried out by installing a vertical drop pipe 8 from this branch pipe 7 at various locations, and opening the lower end of the drop pipe 8 into the main gutter 5.

FIG. 2 shows a vertical section of a non-filling type cooling tower according to the present invention in which the water sprinkler shown in FIG. This is a diagram. The flow of water is not shown because it would complicate the diagram. As shown in the figure, a large number of water branch bars 1 are installed parallel to each other across the entire width of the tower, and troughs 3 corresponding to each water branch bar 1 are installed thereon in the relationship described in FIG. 1. Water to be cooled is distributed to each gutter 3 from a main gutter 5, and water to be cooled is supplied to the main gutter 5 from a branch pipe 7 via a drop pipe 8. In FIG. 2, reference numeral 9 indicates a water main pipe, 10 an eliminator, and 11 a forced blower.

FIG. 3 is a schematic vertical cross-sectional view of the inside of the cooling tower shown in FIG. 2, taken in a vertical cross-section in a direction perpendicular to FIG. In this figure, the water branch bar 1 and the gutter 3 above it appear to extend in the left-right direction of the page. As shown in the figure, the gutter 3 extends from one wall in the tower to the opposite wall, and support plates 12 are suspended from the bottom of the gutter 3 in places, and the water branch bar 1 is attached to the support plates 12. Water branch bars 1 are fixed to the gutter 3 at regular intervals. FIG. 4 is an enlarged cross-sectional view of the water sprinkler section similar to that shown in FIG. 3, and the support plate 12 is clearly visible in this view. FIG. 5 is an enlarged view of FIG. 3 in the direction of the - line arrow. In this figure 5, main gutter 5
A water inlet 6 for distributing cooled water from the trough 3 to the trough 3 is visible, and a slit-shaped opening 2 provided in the longitudinal direction at the bottom of the trough 3 is also visible. FIG. 6 is an exploded view of a part of the integrated structure consisting of the gutter 3 and the water branching bar 1 in plane a, one side surface of b, the other side surface of c, and the bottom surface of d. As seen in FIG. 6, short support plates 12 are suspended at various places on the bottom of the gutter 3 in a direction perpendicular to the longitudinal direction of the gutter 3, and the water branch bar 1 is supported by the support plates 12. Then, the gutter 3 and the water branch bar 1 are fixed in the relationship explained in FIG. The ridgeline 13 of the water branching bar 1 is visible in d of FIG. 6, and this ridgeline 13 is the longitudinal center line of the water branching bar 1.

FIG. 7 is a cross-sectional view taken along the - line in FIG. 3. As shown in the figure, a large number of gutters 3 are arranged horizontally in the tower in parallel with each other at equal intervals.
A main gutter 5 is arranged above the gutter 3 so as to cross each gutter 3. In the illustrated example, two main gutter 5 are arranged parallel to each other, and two branch pipes 7 are arranged above each main gutter 5 in parallel thereto. Water to be cooled is branched into each branch pipe 7 from the main pipe 9 via a T-joint 14 .

As explained above, in the cooling tower of the present invention, a large number of water branching bars 1 are stretched substantially horizontally with the ridgeline of the mountain in the center, and slit-shaped openings 2 in the longitudinal direction are provided.
A gutter 3 having a bottom part is stretched substantially horizontally above the water branching bar 1, and a curtain-like water film flow 4 falling from the slit-shaped opening 2 of the gutter 3 is directed along the ridgeline of the water branching bar 1. The thickness is divided into two and then dropped into the open space inside the tower,
As a result, only a natural flow of water film with low resistance is generated in the sprinkler unit for forming water, so even if precipitable substances exist in the water to be cooled, they will not precipitate in the sprinkler unit. This can be avoided and the above-mentioned problems can be effectively solved.

[Brief explanation of drawings]

Fig. 1 is a partial perspective view schematically showing the water sprinkler section of the cooling tower of the present invention, Fig. 2 is a vertical sectional view of the cooling tower of the invention, and Fig. 3 is a longitudinal cross-sectional view of the cooling tower of the invention shown in Fig. 2. 4 is an enlarged cross-sectional view of a part of the sprinkler device shown in FIG. 3, FIG. 5 is an enlarged view of FIG. 6 is an enlarged view of a part of the integral structure of the gutter 3 and water branch bar 1 in FIG. 3, in which a is the plane thereof, b is one side, c is the other side, d indicates the bottom surface,
FIG. 7 is a sectional view taken along the - line in FIG. 3. 1...Water branch bar, 2...Slit-shaped opening, 3
...Gutter, 4...Curtain-like water film flow falling from the slit opening 2, 5...Main gutter, 6...Water opening,
7... Branch pipe, 8... Falling pipe, 9... Main pipe, 10
...Eliminator, 11...Blower, 12...Support plate of water branch bar, 13...Ridge line of water branch bar.

Claims (1)

[Scope of utility model registration request] In a non-filling type cooling tower in which water to be cooled is sprinkled toward an open space in the tower through which air circulates, a water branching bar 1 having a chevron-shaped cross section is installed at the top of the open space.
A large number of gutter 3 having a longitudinal slit-shaped opening 2 at the bottom is stretched substantially horizontally above the water branching bar 1, and the gutter 3 A non-filling type cooling tower in which a curtain-like water film flow 4 falling from a slit-like opening 2 is bisected in thickness by the ridge line of the water branching bar 1 and then allowed to fall into the open space within the tower.