JPH0665960B2 - Filler unit for cross-flow cooling towers - Google Patents

Description

Detailed Description of the Invention a. OBJECT OF THE INVENTION (Field of Industrial Application) The present invention relates to a filler unit for a cross flow type cooling tower.

(Prior Art) Generally, when white smoke is generated in the winter from the exhaust port of this type of cross-flow cooling tower, the neighbors feel an aversion to pollute the outside air, and at night, If a red ray hits the area, it may be mistaken for a fire, which may interfere with the mental health or fire fighting activities of nearby residents, and there is a tendency to develop a white smoke prevention type.

Even at the applicant company of this application,
In No. 1 and Japanese Examined Patent Publication No. 59-24788, air to be exhausted by providing a coil for passing hot water that has not been cooled among the water to be cooled, or a heat pipe near the exhaust port. We have developed a device that heats the air a little and exhausts it to the outside, and is controlling the temporary results.

(Problems to be Solved by the Invention) However, these special hot water coils and heat pipes are considerably expensive, and the cooling tower itself must have a special structure to incorporate these things. There is a feeling that we are just one step away from increasing the cost of the main unit and spreading it.

The present invention is for a cross flow type cooling tower capable of generating dry air with a simple structure and preventing generation of white smoke from the exhaust port of the cross flow type cooling tower when the wet air and the dry air are mixed. The purpose is to provide the filler unit to the market.

B. Configuration of the Invention (Means for Solving the Problems) In order to solve the above problems, a filler unit for a cross-flow cooling tower according to the present invention has a surface having an uneven portion on which water to be cooled is sprayed and flows down. In a cross-flow type cooling tower packing material unit in which a number of material plates are erected parallel to each other in the width direction of the outside air intake of the cooling tower, at intervals of any of the plurality of packing material plates. In the space between the fillers at least every one interval, only the air passages through which air passes from the suction side to the discharge side are formed, and the gas-liquid contact passages are formed between the remaining filler plates. The ceiling of the passage for exclusive use of air is formed by closing with a sprinkler shelter plate capped on the upper ends of the adjacent filler plates, and among the several shelter plates,
At least some of them are characterized by being openable and closable around the horizontal axis.

(Operation) The operation of the present invention thus constructed will be described together with the method of use.

The filler unit is below the upper water tank of a normal cross flow type cooling tower, and the air dedicated passage is parallel to the horizontal air flow taken from the outside air inlet of the cooling tower. It is loaded in the outer casing of the cooling tower.

Then, the cooling tower is operated, and the cooling water to be cooled is supplied to the upper water tank as in the case of a normal cross-flow cooling tower. It flows down along it and forms a wet wall.

On the other hand, the air sucked from the outside air intake is
In the gas-liquid contact passage, the water to be cooled comes into direct contact with the water to be cooled by the latent heat of vaporization to cool the water to be cooled, and the air becomes moist air.

Further, the air passing through the air-only passage becomes dry air that is heated by indirectly contacting the water to be cooled through the wall surface of the filler plate, and cools together with the moist air in the space at the center of the cooling tower. Mixes while rising toward the upper exhaust port installed in the tower, and is exhausted to the outside without white smoke during the rainy season and winter when the humidity is high.

Further, the ceiling part of the passage for exclusive use of air is formed by the cap plate which is capped on the upper ends of the adjacent filler plates, and at least a part of the cap plate is of an openable and closable type that rotates about a horizontal axis. Thus, by simply opening and closing the cap plate, the number of air-only passages is increased or decreased, and when the necessity is low such as in summer, the heat exchange rate of the entire cooling tower is effectively used by fully opening the cooling tower.

(Example) Next, a description will be given based on a typical example of the present invention.

In FIG. 1, reference numeral 10 denotes a plurality of filler plates 11 each having a concavo-convex portion on the surface to which water to be cooled is sprinkled and flow down in parallel in the width direction of the outside air intake of the cooling tower at intervals. It is a cross-flow type cooling tower packing material unit.

At least every other one of the plurality of filler plates 11 is provided with an air-only passage 12 through which only air passes.

The ceiling portion of each air-only passage 12 is formed by closing an elongated sprinkler shelter plate 13 attached to the upper ends of adjacent filler plates 11.

A gas-liquid contact passage 14 is formed between the remaining filler plates not covered with the cap plate 13.

The cap plate 13 is of an openable and closable type that rotates about a horizontal axis as shown in the drawing. Even if any arbitrary number is individually or interlocked and the ratio between the air-only passage 12 and the gas-liquid contact passage 14 is made variable, it belongs to the scope of the present invention.

The turning range of the cap plate 13 is between a substantially vertical open position and a closed position extending between adjacent fillers.

The operation of the filler unit for the cross flow type cooling tower of the above embodiment is the same as the operation of the present invention, and the description thereof is omitted here to avoid duplication.

C. Effects of the Invention In the invention configured and operating as described above, the air passages through which the water to be cooled dispersed in the unit does not flow at all are provided as described above. Since the air is indirectly contacted and heated via the wall surface of the filler plate, the absolute humidity is kept constant and the temperature of the dry air rises, and the air taken in from the outside air intake of the cooling tower in the gas-liquid contact passage. The direct contact with the water to be cooled results in moist air with high absolute humidity, and this dry air and moist air can be generated in parallel by a single packing material unit. By installing the unit in a cross-flow cooling tower, both moist air and dry air having a temperature higher than this are raised, and these two types of air are mixed by the blower at the exhaust port, and this mixed air is supersaturated. It can be exhausted to the outside air without generating white smoke without turning it into air.

Furthermore, the ceiling part of the passage for exclusive use of air is formed on the upper end of the adjacent filler plate by the above-mentioned formation, and by making at least a part of this cap plate an opening and closing type that rotates around a horizontal axis, By simply opening and closing the cap plate, the number of air passages can be increased or decreased, and when the necessity is low such as in the summer, the heat exchange efficiency of the entire cooling tower can be effectively used by fully opening the cooling tower.

[Brief description of drawings]

 FIG. 1 shows a typical embodiment of the present invention. Explanation of main symbols in the figure 10 …… Filling material unit, 11 …… Filling material plate, 12 …… Air-only passage, 13 …… Board plate, 14 …… Gas-liquid contact passage.

Claims (1)

[Claims] 1. A cross-flow type in which a plurality of filler plates having uneven portions on the surface of which water to be cooled is sprinkled and flowed down are provided upright in parallel across the width direction of the outside air intake of a cooling tower. In the filler unit for a cooling tower, among the plurality of filler plates, air-only passages through which only air passes from the suction side to the discharge side are formed between the fillers at least every one interval at arbitrary intervals. A gas-liquid contact passage is formed between the remaining filler plates, and the ceiling of the air passage is closed by a sprinkler shelter plate attached to the upper end of the adjacent filler plates. A packing unit for a cross flow type cooling tower, wherein at least a part of the plurality of cap plates is of an open / close type that rotates about a horizontal axis.