JPH02171599A - Sprinkling nozzle for cooling water tower - Google Patents

Abstract

PURPOSE:To simplify a step of removing scale in a cooling water tower sprinkling nozzle tube with satisfactory operability, to shorten the operating time, and to perform energy conservation by longitudinally splitting a tubular part including the collar of a nozzle to be disassembled, and binding split nozzle tubes with a heat resistant nylon binding band. CONSTITUTION:A nozzle tube 1 of vinyl chloride including a collar necessary to be secured to the blocklike hot water tank of a cooling water tower is longitudinally split to be disassembled, and bound by two heat resistant nylon binding bands 2. Further, the nozzle tube is clamped with a sprinkling nozzle 3 to be integrated. Since scale can be removed by removing the nozzle tube including the collar from the sprinkling nozzle and merely removing the two heat resistant nylon binding bands so that the tubes are disassembled to be split, the scale adhered and stored into the tube can be easily peeled off, and a time required for removing the scale can be shortened. Since chemical removal is not required, the safety of the operation is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cooling tower water nozzle that facilitates scale removal work.

[Conventional technology]

Hot spring water that gushes out from the mine during mining is pumped up, guided to a cooling tower, cooled to near atmospheric temperature, and then adjusted to pH: A in water treatment equipment and removed suspended solids, before being discharged into a nearby river. In cooling towers, scale mainly composed of calcium carbonate contained in hot spring water accumulates inside the water spray nozzle pipes installed at the top of the tower, narrowing the hot spring water flow path and significantly reducing cooling efficiency. It is the cause.

Mineral carbonates such as calcium carbonate contained in hot spring water (60 to 70°C) that gushes out in large quantities adhere and accumulate in the water nozzle pipes of cooling towers as scale in a relatively short period of time.

Conventionally, the material of this water nozzle pipe was made of vinyl chloride.
Its shape is a tube with a diameter of about 50 mmφ. With this shape, it is not possible to sufficiently physically remove the scale that has adhered and accumulated within the water spray nozzle pipe, and chemical removal has had to be performed by acid cleaning using hydrochloric acid or the like. However, with this method, cleaning takes a long time, and acid cleaning cannot be carried out in the narrow space at the top of the tower, so the removed water nozzle pipe is transported to a location where it can be cleaned, and after cleaning, it is transported again to the top of the base volume. It required effort to install.

This cleaning work is carried out once every two months during the operating period, and the time required for this series of work is approximately 70 hours per cooling tower.
This meant descaling and cleaning was done for 10 days in a two-month period, which had the disadvantage of consuming a great deal of labor and labor costs.

[Problem to be solved by the invention]

It is an object of the present invention to solve the above-mentioned drawbacks, simplify the process of removing scale in a cooling tower water nozzle pipe with good workability, and at the same time shorten the working time and save labor.

[Means to solve the problem]

The present invention is a water sprinkling nozzle pipe in which a pipe portion including a collar of a vinyl chloride water sprinkling nozzle is vertically divided into two parts and can be disassembled, and the divided nozzle pipes are tied together with heat-resistant nylon binding bands.

〔Example〕

Fig. 1 shows the appearance of one embodiment of the water spray nozzle pipe of the present invention, and Fig.
The figure shows a cross-sectional view. Here, a nozzle pipe (diameter 65 mmφ) 1 made of vinyl chloride including a collar necessary for fixing it to a box-shaped hot water tank of a cooling water tower is divided into two parts vertically so that it can be disassembled, and a heat-resistant nylon binding band 2 is attached to the two parts. She is tied up using a book.

Further, the nozzle pipe is integrated with the water spray nozzle 3 by screwing it into the water spray nozzle 3. 4 and 4' in the figure indicate the joining line of the two divided nozzle tubes.

[For production]

This integrated water spray nozzle was attached to the bottom of the square-shaped hot water tank at the top of the cooling water tower, and after operating for two months, scale removal work was carried out. To remove scale, start by removing the water nozzle from the bottom of the hot water tank. Since the removed water nozzles no longer require chemical cleaning, the work can now be carried out using the space of the ventilation mechanism at the top of the cooling tower.

Therefore, it is possible to reduce the labor and time required to transport the nozzle that has been removed for chemical cleaning back and forth to the work site under the cooling water tower, which was conventionally necessary. In addition, scale can be removed by simply removing the nozzle tube including the brim from the water spray nozzle and then removing two heat-resistant nylon cable ties, allowing the tube to be disassembled into two parts.The scale that has accumulated inside the tube can be removed while the tube remains in its conventional tubular shape. It is easier to remove the scale compared to the scale removal process, and it is also possible to visually check the extent of the removal, so work efficiency is greatly improved and the time required for scale removal work is reduced by 57%.
% could be shortened. Furthermore, since chemical removal using hydrochloric acid or the like is not required, work safety has been significantly improved.

〔Effect of the invention〕

As explained above, by using the cooling tower water spray nozzle of the present invention, scale within the nozzle pipe can be physically and efficiently removed, and the nozzle is kept in a good cleaning state even without acid cleaning. Furthermore, since the acid cleaning step can be omitted, there is an advantage that the time and labor required to transport the removed water nozzle back and forth to the cleaning site can be reduced.

[Brief explanation of the drawing]

FIG. 1 shows the external appearance of the water spray nozzle of the present invention, and FIG. 2 shows a cross section of the nozzle. 1... Water nozzle pipe, 2... Heat-resistant nylon cable tie, 3... Water nozzle, 4... Joining line Figure 1 Figure 2

Claims (1)

[Claims] A cooling tower water spray nozzle characterized in that a pipe portion including a collar of the nozzle is vertically divided into two parts and can be disassembled, and the two-part nozzle pipe is tightly bound with a heat-resistant nylon binding band.