JP4135635B2 - Cooling equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple and low-cost cooling facility for preventing a complicated design and construction, preventing the extension of a work period in a field, and simplifying repair. <P>SOLUTION: The cooling facility is provided with lower water tanks 1a, 1b and 1c, and a plurality of closed cooling towers C1, C2 and C3 for cooling heat exchange mediums by spraying spray water on a heat exchange flow path 2 for passing the heat exchange mediums from the lower water tanks 1a, 1b and 1c are arranged near the facility. Further the facility is provided with a flow path S for communicating between the lower water tanks 1a, 1b and 1c, adjacently arranged so as to evenly mix the spray water in the respective lower water tanks 1a, 1b and 1c, and a means for mixing the spray water in the respective lower water tanks 1a, 1b and 1c. Preferably, a means for mixing the spray water in the respective lower water tanks 1a, 1b and 1c is a water supply pump 9 for supplying the spray water from one of the lower water tanks 1a to the other lower water tank 1a, or a streamlining plate 11 or a water collecting trough 12 provided in each lower water tanks 1a, 1b and 1c, or a partitioning plate 13 crossing over the respective lower water tanks. <P>COPYRIGHT: (C)2005,JPO&amp;NCIPI

Description

  The present invention relates to a cooling facility, and more particularly to a cooling facility provided with a plurality of hermetic cooling towers.

  Conventionally, a cooling tower used in an open circulation cooling water system automatically blows cooling water and automatically supplies a water treatment agent to the cooling water system for the purpose of preventing corrosion, preventing scale adhesion and slime control. A conductivity meter that measures the conductivity of the cooling water, a conductivity-linked automatic valve that opens and closes a refill water valve or a blow water valve according to the measurement result of the conductivity meter, and a passage through the conductivity-linked automatic valve It is known to install a cooling water system automatic blow pouring device comprising means for supplying a water treatment chemical to the cooling water system according to the amount of water.

  The hermetic cooling tower is manufactured by connecting small unit-type cooling towers. Each cell of this cooling tower unit has high independence, and each cell of this unit has the feature that the fan is turned on and off independently according to the seasonal change, or the number of operation cells is controlled and the load fluctuates. Yes.

  When each cell of the enclosed cooling tower is operated independently, the water spray between the cells is not mixed, so the water quality between the cells is different, and different failures occur depending on the cells. is doing. As the countermeasure, the automatic blow chemical injection device used in the open cooling tower cannot avoid troubles other than the cell in which the automatic blow chemical injection device is installed.

  Therefore, in order to deal with the above problems, headers have been installed in the water supply or return water pipes, and communication pipes have been installed in the upper and lower water tanks. However, problems such as time-consuming maintenance after construction remained.

Furthermore, a method of individually controlling each cell by installing a water treatment facility (conductivity meter), a chemical solution injection facility, a water supply / drain pipe and the like for each cell is also known (Patent Document 1). The problem remains that the control device is expensive compared to the price of the cooling tower. An object of the present invention is to provide a simple and inexpensive cooling facility that realizes the above-described conventional problems, that is, the complexity of design and construction, the prevention of extension of the local construction period, and the simplification of repairs.
JP-A-11-212386

In order to solve the above-mentioned problems, a cooling system according to the present invention has a lower water tank, and is a sealed type that cools the heat exchange medium by spraying spray water from the lower water tank to a heat exchange channel through which the heat exchange medium passes. In a cooling facility having a plurality of cooling towers, a flow path connecting adjacent lower water tanks and spray water in each lower water tank so that the sprayed water in each lower water tank is uniformly mixed with each other. and a mixing means, means for mixing water dissipating fabric water is provided to spray water to fall are sprayed to the heat exchange passage of the respective closed cooling tower is induced in the other of the lower water tank It is characterized by being (claim 1).

The lower water tank of the present invention has a flow path that communicates between adjacent lower water tanks, in addition to the cooling water circulation line and the spray water line of the sealed cooling tower that are conventionally equipped, and in each of the sealed cooling towers. The sprayed water sprayed and dropped in the heat exchange channel is provided with means for mixing the sprayed water provided so as to be guided to the other lower water tank. That is, a circulation system for making the water quality uniform between the respective lower tanks is created, and in the circulation system, a swirl flow is created in each lower tank to efficiently mix the quality of the spray water. It is possible to maintain the quality of sprayed water in each sealed cooling tower at a constant level, and there is no need to install multiple expensive water treatment equipment (conductivity meter), chemical injection equipment, water supply / drainage pipes, etc. An inexpensive cooling facility can be provided.

Further, in a preferred embodiment, the means for mixing the sprayed water in each of the lower water tanks is a rectifying plate provided in each of the lower water tanks, and heat exchange in each sealed cooling tower The sprayed water sprayed and dropped in the flow path is a rectifying plate provided so as to be guided to the adjacent lower water tank (Claim 2 ). According to this embodiment, a swirling flow is generated in each lower water tank by a flow path communicating between adjacent lower water tanks and a rectification (baffle) plate provided in consideration of uniform mixing in each lower water tank. By creating and efficiently and uniformly mixing the quality of the spray water, the quality of the spray water can be kept constant.

In still another preferred embodiment, the means for mixing the sprayed water in each of the lower aquariums is a water collection trough provided in each of the lower aquariums, The spray water sprayed and dropped in the heat exchange flow path is a water collection trough provided so as to be guided to another lower water tank (claim 3 ). According to this embodiment, the sprayed water of each closed cooling tower is once collected by a collecting trough and discharged to the lower tank, and a swirling flow is created in each lower tank to improve the quality of the sprayed water. While being able to mix uniformly efficiently, the quality of spray water can be kept constant.

In another preferred embodiment, the means for mixing the sprayed water in each of the lower water tanks is a partition plate straddling each of the lower water tanks, and the heat exchange flow path in each of the hermetic cooling towers The partition water is provided so that the sprayed water that is sprayed and dropped is guided to the other lower water tank, and the sprayed water that is sprayed and dropped in the heat exchange flow path in each hermetic cooling tower The partition plate is provided so as to be guided to another lower water tank (Claim 4 ). According to one embodiment of the present invention, it is possible to efficiently and uniformly mix the quality of the spray water by creating a swirling flow in each lower tank by guiding the spray water with the partition plate, and the quality of the spray water Can be kept constant.

  ADVANTAGE OF THE INVENTION According to this invention, the cooling equipment which consists of a plurality of enclosed cooling towers can be provided easily and inexpensively by realizing complicated design and construction, prevention of postponement of the local construction period, and simplification of repair.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. FIG. 11 shows a cross-sectional view of the closed cooling tower C. In the figure, 1 is a lower water tank, 2 is a cooling water coil, 3 is a water spray pipe, 4 is a louver, 5 is a fan, 6 is a pipe connected to a refrigerator (not shown), 7 is a pump, It is configured to be circulated from the lower water tank 1 by the pump 7.

  FIG. 1 shows an assembly perspective view in the case where the sealed cooling tower C is provided with three cells. That is, three hermetic cooling towers C1, C2, and C3 are provided side by side, and lower water tanks 1a, 1b, and 1c are connected to each other through water level adjusting weirs 8a and 8b. And the flow path S which connects between the said lower water tanks 1a, 1b, and 1c by the said water level adjustment weirs 8a and 8b is formed.

FIG. 2 shows an embodiment in which sprayed water supplied to the lower water tanks 1a, 1b and 1c having the above-described configuration is uniformly mixed with each other . In the embodiment, before Ki構 configuration of the lower water tank 1a, the 1b and 1c, for example, the lower the back side of the tank 1c established the rectifying plate 11, the lower water tank 1b part or all of the sprayed water To flow into. In addition, a rectifying plate (not shown) is installed on the back side of the lower water tank 1b in consideration of uniform mixing, and a part of the spray water is allowed to flow into the lower water tank 1a. At the same time, a rectifying plate (not shown) is installed on the front side of the lower water tank 1a in consideration of uniform mixing, and a part of the spray water is allowed to flow into the lower water tank 1b. Further, a rectifying plate (not shown) is similarly installed on the front side of the lower water tank 1b to allow a part of the sprayed water to flow into the lower water tank 1c. By creating a swirl flow in each of the lower water tanks 1a, 1b and 1c by circulation of the spray water, the water quality of the spray water is made uniform.

Another embodiment is shown in FIGS. 3 , 4 and 5 . In this embodiment, in the lower water tanks 1a, 1b, and 1c having the above-described configuration, water collecting troughs 12 and 12 are installed on the back side and the near side, respectively, and part or all of the sprayed water is temporarily collected. It flows into the troughs 12 and 12. Then, as shown in FIG. 5 , the one end 12a of the troughs 12 and 12 is opened and the other end 12b is closed to create a swirling flow in each of the lower water tanks 1a, 1b and 1c. Water quality is made uniform. In addition, as long as a swirl flow is created and the water quality of the spray water is made uniform, the opening may be provided at any position of the water collection trough, and a plurality of openings may be provided.

6 and 7 show still another embodiment. In this embodiment, partition plates 13 and 13 are installed in the water collecting portions on the back side and the near side of the lower water tanks 1a, 1b and 1c, and part or all of the spray water is transferred to the lower water tanks 1a, 1b and 1c. It is configured to flow in one direction of 1c. That is, as shown in FIG. 6 , a swirl flow is created in each of the lower water tanks 1a, 1b and 1c by opening one end 13a of the partition plate 13 and leaving the other end 13b uncut. As a result, the water quality of the spray water is made uniform. In addition, as long as a swirl flow is created and the water quality of the spray water can be made uniform, the opening may be provided at any position of the partition plate, and a plurality of openings may be provided.

FIG. 8 shows a case where the open ends 12a of the water collecting trough 12 are alternately installed, or a case where the ends 13a of the partition plate 13 cut open are alternately installed, and FIG. 9 shows the water collecting trough 12 When the one end 12a having the opening is installed in the same direction, or when the one end 13a having the cut-out opening of the partition plate 13 is installed in the same direction, a swirling flow is created in each case, and the water quality is uniform. Can be achieved.

  In the best mode for carrying out these inventions, the water level adjusting weirs 8a and 8b may or may not be installed. Moreover, what is necessary is just to form the flow path which connects between adjacent lower water tanks, such as providing a connecting pipe between each lower water tank instead of the said water level adjustment weirs 8a and 8b.

It is an assembly perspective view of a closed type cooling tower concerning one embodiment of the present invention. It is a perspective view of the principal part which shows other one Embodiment. Furthermore, it is a perspective view of the principal part which shows other one Embodiment. FIG. 4 is a cross-sectional view of FIG. 3. It is a perspective view of the water collection trough of FIG.3 and FIG.4. It is a disassembled perspective view which shows other one Embodiment. FIG. 7 is an assembled cross-sectional view of FIG. 6. FIG. 8 is a plan view of FIG. 7. FIG. 9 is a plan view showing another embodiment of FIG. 8. It is sectional drawing of a closed type cooling tower.

Explanation of symbols

1a, 1b, 1c Lower water tank 11 Current plate 12 Water collecting trough 13 Partition plate C1, C2, C3 Sealed cooling tower S Channel

Claims (4)

In each of the cooling facilities having a lower water tank, each of the lower water tanks is provided with a plurality of hermetic cooling towers that cool the heat exchange medium by spraying spray water from the lower water tank to a heat exchange passage through which the heat exchange medium passes. comprising a flow path spraying water inside to contact between the lower water tank adjacent to be uniformly mixed with each other, and means for mixing each of the spray water in the lower water bath, the means for mixing the diverging fabric water The cooling equipment is provided such that the sprayed water that is sprayed and dropped in the heat exchange flow path in the hermetic cooling tower is guided to another lower water tank . The means for mixing the sprayed water in each lower water tank is a rectifying plate provided in each lower water tank, and the sprayed water that is sprayed and dropped in the heat exchange flow path in each sealed cooling tower is, The cooling device according to claim 1, wherein the cooling device is a current plate provided to be guided to an adjacent lower water tank. The means for mixing the sprinkled water in each lower aquarium is a water collection trough provided in each lower aquarium, and the sprinkled water that is sprayed and dropped in the heat exchange channel in each sealed cooling tower is The cooling equipment according to claim 1, which is a water collection trough provided to be guided to another lower water tank. The means for mixing the sprinkled water in each lower aquarium is a partition plate that straddles each lower aquarium, and the sprinkled water that is sprayed and dropped in the heat exchange channel in each hermetic cooling tower, The cooling equipment according to claim 1, wherein the cooling equipment is a partition plate provided so as to be guided to the lower water tank.

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