JPS60149896A - Method of operating cooling tower - Google Patents

Abstract

PURPOSE:To save energy by spraying water selectively from one of partitioned chambers to all the chambers in accordance with the quantity of the circulating cooling water supplied into a hot water tank, through nozzle holes at the bottom parts thereof, and controlling the fan in accordance with the quantity of water. CONSTITUTION:The hot water tank 3 is partitioned stepwise by a plurality of partitioning plates 4 having different heights to form partitioned chambers 3a, 3b, 3c.... These partitioning plates 4 are arranged in required intervals so that their heights become higher gradually from the hot water flow-in side. When the quantity of water decreases and the water level becomes lower than the height of one of the partitioning plates. The flow-in of hot water to the partitioned chamber located at a position higher than the partitioning plate is stopped, and water is sprayed only from the partitioned chambers at positions lower than the water level. Further, the air quantities of fans are controlled depending on the number of actuation of a switch 7.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of operating a cooling tower.

In the cross-flow type (Cross 70 set) cooling tower, the cooling water heated by heat exchange is returned to the hot water tank installed at the top of the tower, and is passed over the filling through a nozzle drilled at the bottom of the hot water tank. The cooling air is dropped into the tower and brought into contact with the cooling air drawn into the tower to effect the desired cooling.

When the amount of cooling water (circulating water) dripping from this hot water tank is at the appropriate level, the required water depth is maintained in the hot water tank, and the head pressure (water pressure) is increased against the nozzle hole drilled into the bottom of the hot water tank. Once formed, drip almost evenly over the entire filling.

Cooling is efficient, but if the wax in the hot water tank is less than the design value, the cooling water dripping from the nozzle will become uneven, and the water scattering plate below will be less likely to scatter, causing the entire lie 11 ring to be covered. Cooling water will no longer spread uniformly over the area, resulting in a decrease in cooling performance. On the other hand, since the rotation of the fan does not change, power consumption does not change and energy is wasted.

The present invention was made in view of this, and it maintains a good watering situation even when the bottom of the swimsuit is down, and also adjusts the fan flow according to the water intake.
IL! It's something that wastes energy.

The following description will be made based on the illustrated embodiment.

In the figure, 1 is the main body of the cooling tower, 2 is the filling filled in the main body of the tower, and 8 is above this soy 11 ring ='? i! In the heated water tank, the circulating cooling water returned from the condenser etc. becomes hot water and is returned to this hot water tank 8. 6, it is dropped and cooled almost uniformly. In this case, the inside of the hot water tank 8 is partitioned in stages with partition plates 4 of different heights, as shown in FIGS.
・Form. A large number of partition plates 4 are arranged at required intervals so that the height of the partition plates increases sequentially from the hot water inflow side. Water is sprayed variably from the nozzle hole at the bottom to all rooms. In other words, when the amount of water in the hot water tank is higher than the maximum setting of the swimsuit.

As shown in FIG. 8, the water level in the tank becomes higher than all the partition plates, and water is sprayed from the nozzle holes in all the partitions. When this swimsuit decreases and the water level becomes lower than one of the partition plates, the flow of hot water to the partition chamber located higher than this partition plate stops.
Water is sprayed only from a partition located below the water level.

Reference numeral 6 denotes a fan, and the suction air flow by this fan 6 flows perpendicularly to each partition wall 4, that is, each partition chamber ga,
8b... is attached to the Ei angle.

In addition, 7 in the figure is a level switch used for each partition.

Then, the number of circulating swimsuits supplied to the hot water tank 8 decreases.

If the circulating water supplied to the partition 6a crosses the partition wall 4 and is supplied to the partition Bb, but does not reach the next partition 8c, the number of actuated level switches 7 provided in each partition may cause the fan to Wind dragon control is performed by changing the number of rotations (for example, by polar change) or the twisting angle. In other words, the larger the amount of water, the larger the number of lice.

According to the present invention, when the amount of circulating water supplied is a set meter, the circulating water supplied from the hot water tank side is supplied to all the partitions, and the filling on the side of the hot water tank is The fans are operated to draw in the highest wind power. However, when the amount of circulating water decreases, such as in winter, and the area to be watered decreases as the number of partitions to which the circulating water is supplied decreases, it is recommended to change the rotation speed or twist angle of the fan to supplement the suction wind shelter. As a result, the drive power of the fan can be reduced, and the amount of water sprinkled and the noise of the fan can be reduced.

[Brief explanation of the drawing]

The drawing is an embodiment diagram for explaining the variable bottle operation method in the cooler tower of the present invention.
fl is a schematic cross-sectional view of the Guling Tower, Fig. 2 is an external view of the hot water tank, Fig. 8 is a sectional view, and Fig. 41 is a plan view of the entire Guling Tower. 11. , the main body of the cooling tower 21. , filling device 11. Calendar water tank aa, ab no C0, partition room 410. Partition plate Fl, 1. Fan 600. Scatter plate 7, +, level switch

Claims (1)

[Claims] A large number of nozzle holes are drilled across the entire bottom of the hot water tank installed at the top of the Goo+1 ng tower, and the hot water tank in parentheses consists of multiple partitions with different heights from the circulating water inlet side, and the amount of circulating water supplied is controlled. In response to changes in the water supply area, the partitions to which the circulating water is supplied are regulated to change the watering area. (In this case, a common fan is installed for water sprinkling from each partition, and the suction air flow by the fan is A method of operating a Gooling tower, characterized in that the partitions are moved perpendicularly to each other, and the suction air of the fan is increased or decreased in accordance with changes in the watering range.