JPH073186Y2 - Blow device for cooling tower - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an improvement of a blowing device for a cooling tower.

[Conventional technology]

In a cooling water circulation system that uses a cooling tower to cool water that has been once used and warmed by an air conditioner and various industrial equipment, and then reuses it as cooling water, some cooling water evaporates in the cooling tower. There is a problem that hardness components such as calcium and magnesium contained in are concentrated, scales are easily deposited, and adhere to the inner surface of the pipes forming the circulation system to deteriorate the circulation function.

In order to eliminate such a problem, a scale inhibitor such as polymerized phosphate that conventionally sequesters hardness components is dissolved in cooling water, or a part of the cooling water is discharged out of the system to obtain clear water. I try to add more water to prevent changes in water quality.

In the conventional blower, a large-scale method of electrically measuring the quality of the cooling water and opening a solenoid valve of the blow system to blow a part of the cooling water when a certain value is reached is adopted. A blower whose opening area can be adjusted is installed below the filler that is installed in the cooling tower on a small scale, and the opening of the blower is adjusted to flow down from the filler. A system is adopted in which the amount of cooling water received is adjusted and discharged outside the system.

The present invention is directed to the latter, which is a blower used for a relatively small-scale cooling tower.

[Problems to be solved by the invention]

As described above, the conventional blower for a relatively small-scale cooling tower has a structure in which a blower having an adjusting function is attached to a position below the packing material in the cooling tower. In order to adjust the amount, there was a problem that the operator had to put his or her hand into the cooling tower through which the cooling water was flowing down each time. In addition, the cooling water that flows down from above is prone to corrosion, and there is a drawback in that inspection and maintenance require a lot of trouble. Further, in the case of the conventional device, there is a problem that the control of the discharge amount is inaccurate and the water quality is not completely controlled.

Therefore, the present invention eliminates the above-mentioned problems of the conventional device,
The water receiving means for receiving the cooling water flowing down from the lower surface of the packing material and the flow rate adjusting means for adjusting the flow rate of the cooling water to be discharged are separated, and the flow rate adjusting means is provided outside the cooling tower such as the lower part of the cooling tower for easy operation. To provide a cooling tower blower capable of being attached to the peripheral portion of a water tank and using an orifice plate having a plurality of holes of different diameters to accurately and surely maintain the discharge amount. The purpose is.

[Means for solving problems]

The structure of the present invention for solving the problem will be described in detail. A water receiving means for receiving the cooling water flowing down from the packing material attached to the inside of the cooling tower and a mounting means provided outside the cooling tower. Flow rate adjusting means for adjusting the discharge flow rate of the cooling water by adjusting part of the cooling water received by the water receiving means and discharging the cooling water to the outside of the system and returning to the circulation system; and the water receiving means. The flow rate adjusting means comprises a water supply pipe communicating with the flow rate adjusting means, and the flow rate adjusting means is provided with a discharge water level adjusting chamber in addition to the water head adjusting chamber by partitioning the inside of the adjusting box main body with the water head adjusting chamber. A cooling water inflow port and a cooling water overflow port are provided, and the discharge flow rate of the cooling water flowing from the water head adjusting chamber into the discharge water level adjusting chamber is adjusted by sliding an orifice plate having several holes of different diameters. By moving A cooling tower for blow device is obtained without to.

According to the present invention, when adjusting the flow rate, it is not necessary to put a hand into the cooling tower where cooling water is dripping as in the conventional case, and an accurate discharge amount can be obtained only by operating the knob that slides the orifice plate. It is something that can be maintained.

〔Example〕

Hereinafter, a specific configuration of the present invention will be described in detail based on the illustrated embodiment.

FIG. 1 is a schematic view showing an example of the usage state of the device of the present invention, FIG. 2 is a perspective view showing an example of the flow rate adjusting means, and FIG. 3 is a plan view showing an example of the flow rate adjusting means with the cover plate removed. Figure,
FIG. 4 is a sectional view taken along the line AA in FIG. 3, FIG. 5 is a front view showing an example of the orifice plate, and FIG. 6 is a front view showing an example of a partition wall in the flow rate adjusting means for mounting the orifice plate.

In the figure, 1 is a cooling tower, 2 is a water receiving tank installed under the cooling tower, and the cooling water in the water receiving tank 2 is sent to a place where the cooling water is used by a pump and piping not shown, and then the cooling tower 1 is filled. Material 3
Is sprinkled on the filling material 3 from the sprinkling means 4 disposed on the upper part of the filling material 3, cooled by receiving the air blown from the blowing means 5 when the filling material 3 flows down, and enters the water receiving tank 2 from the lower surface of the filling material 3. It falls like rain.

In the present invention, the filler 3
The water receiving means 6 for receiving the cooling water flowing down from the lower surface and the flow rate adjusting means 7 for adjusting the discharge flow rate of the cooling water received by the water receiving means 6 are separated via the water supply pipe 8, and the flow rate adjusting means 7 is provided. Is disposed outside the cooling tower 1, preferably at the peripheral portion of the water receiving tank 2 below the cooling tower 1.

First, the water receiving means 6 has a function of receiving the cooling water flowing down from the lower surface of the filler 3, and does not have a special structure. For example, the water receiving means 6 may be hung on the lower surface of the filler 3. It was done.

The cooling water received by the water receiving means 6 is sent to the flow rate adjusting means 7 arranged outside the cooling tower 1 via the water supply pipe 8.

As shown in FIGS. 2 to 4, the flow rate adjusting means 7 is composed of an adjustment box main body 9 and a cover plate 10 having an upper opening, and a cooling water inlet 11 is provided on one side of the adjustment box main body 9. There is.

A discharge water level adjusting chamber 13 partitioned by a partition wall 12 is provided in the adjusting box body 9 separately from the water head adjusting chamber 14,
The flow rate of the cooling water flowing from the water head adjusting chamber 14 into the discharge water level adjusting chamber 13 is adjusted by sliding the orifice plate 15 pressed against the partition wall 12.

That is, the partition wall 12 to which the orifice plate 15 is attached has a through hole 16 for cooling water, as shown in FIGS. 4 and 6, and a through hole 17 communicating with this through hole 16 is an orifice. Board
A plurality of holes are provided in the circumferential direction of 15.

The diameters of the through holes 17, 17 ... Are respectively changed, and when the knob 18 is turned, the orifice plate 15 fixed to the tip of the shaft 19 slides to select the through hole 17 communicating with the through hole 16. Is something that can be done. A spring 20 is attached to the outer peripheral portion of the shaft 19 to press the orifice plate 15 toward the partition wall 12 side. Further, an O-ring 21 for sealing is provided on the outer peripheral portion of the flow hole 16, so that the cooling water in the water head adjusting chamber 14 must always pass through the flow hole 17 of the orifice plate 15 and the flow hole 16 to adjust the discharge water level. It is designed to flow into the chamber 13. Further, the plurality of through holes 17 formed in the orifice plate 15 are not limited to the circumferential direction and may be, for example, a row shape or a column shape.
When the through holes 17 are bored in a row, the orifice plate is slid horizontally, and when the through holes 17 are bored in a row,
It goes without saying that the orifice plate is slid vertically. In addition, 22 in the drawing is a spacer for smoothly sliding the orifice plate 15, and 23 is a space from the inlet 11 to the adjustment box body 9
Of the water head adjusting chamber 14 for suppressing the disturbance of the cooling water, and 24 indicates an overflow port of the cooling water provided on one side of the water head adjusting chamber 14, and the overflow port 24 is the cooling water return pipe 26. It communicates with the inside of the water receiving tank 2 via.

Reference numeral 25 denotes a blow port provided on one side of the discharge water level adjusting chamber 13, through which excess cooling water is discharged to the outside of the system. Needless to say, the overflow port 24 is located higher than the blow port 25 (FIG. 2). Further, 27 is a strainer attached to the peripheral portion of the inflow port 11, 28 is a mounting member of the adjustment box main body fixed to the back surface of the adjustment box main body 9 in height adjustable, and a hook provided on this mounting member 28. The portion is engaged with, for example, the peripheral portion of the water receiving tank 2, and the flow rate adjusting means 7 is attached to the outside of the cooling tower 1 so that its height can be adjusted.

The blower of the present invention has the above-described structure, and the cooling water received by the water receiving means 6 is sent through the water supply pipe 8 into the adjustment box body 9 forming the flow rate adjusting means 7 through the inflow port 11. The turbulence of the cooling water that has entered the adjustment box body 9 is suppressed by the flow regulating plate 23, and a part of the cooling water flows from the head adjusting chamber 14 into the through hole 17 of the orifice plate 15 and the through hole 16 formed in the partition wall 12. Through which the water flows into the discharge water level adjusting chamber 13 and is discharged from the blow port 25 to the outside of the system. At this time, even if the orifice plate 15
Even if the maximum diameter through-hole is selected among the through-holes 17 formed in the head, the remaining part of the cooling water that has flowed into the head adjustment chamber 14 is constantly discharged from the overflow port 24 by the overflow port. It is important to adjust the flow rate of the cooling water flowing from 11 in advance, whereby the water level of the cooling water in the water head adjustment chamber 14 can be always maintained constant, and the diameter of the through hole 17 can be extended. Accordingly, the cooling water can always flow into the discharge water level adjusting chamber 13 at a constant flow rate.

Then, when the discharge flow rate of the cooling water is increased, the knob 18 protruding to the outside of the adjustment box body 9 is turned to match the large-diameter through hole 17 of the orifice plate 15 with the through hole 16. The flow rate of the cooling water flowing into the discharge water level adjusting chamber 13 is increased. On the other hand, when it is not necessary to discharge the cooling water so much, it suffices to match the small diameter through hole 17 of the orifice plate 15 with the through hole 16, and the amount of inflow into the discharged water level adjusting chamber 13 is reduced. Returns the cooling water from the overflow port 24 of the water head adjusting chamber 14 into the water receiving tank 2 through the return pipe 26.

The same amount of clear water as the amount of cooling water discharged from the blow port 25 to the outside of the system is injected into the water receiving tank 2 through the water supply pipe 29.

[Effect of device]

In the blower for a cooling tower of the present invention, the water receiving means and the flow rate adjusting means are separated as described above, and the flow rate adjusting means is arranged outside the cooling tower. There is no need to put your hands inside the tower. In particular, the cooling water that is repeatedly circulated contains a large amount of harmful bacteria in addition to the hardness component. According to the present invention, there is no risk of direct contact with the cooling water when adjusting the flow rate, so it is extremely hygienic. The adjustment work can be performed. Further, since the flow rate adjusting means is arranged outside the cooling tower, corrosion can be prevented, and inspection and maintenance are significantly facilitated. Further, since the orifice plate is provided with a plurality of holes having different diameters, the amount of discharged water can be switched in multiple stages, and the amount of discharged water can be set accurately and reliably.

[Brief description of drawings]

FIG. 1 is a schematic view showing an example of a usage state of a cooling device for a cooling tower of the present invention, FIG. 2 is a perspective view showing an example of a flow rate adjusting means, and FIG. 3 is a flow rate adjusting means with a cover plate removed. Fig. 4 is a plan view showing an example, Fig. 4 is a sectional view taken along the line AA in Fig. 3, Fig. 5 is a front view showing an example of an orifice plate, and Fig. 6 is a front view showing an example of a partition wall in a flow rate adjusting means for attaching the orifice plate. It is a figure. 1: Cooling tower, 2: Water receiving tank 3: Filling material, 4: Sprinkling means 5: Air blowing means, 6: Water receiving means 7: Flow rate adjusting means, 8: Water supply pipe 9: Adjustment box body, 10: Lid plate 11: Inlet port, 12: Partition wall 13: Discharge water level adjusting chamber, 14: Head adjusting chamber 15: Orifice plate, 16: Flow hole 17: Through hole, 18: Knob 19: Shaft, 20: Spring 21: O-ring, 22: Spacer 23: Flow plate, 24: Overflow port 25: Blow port, 26: Return pipe 27: Strainer, 28: Mounting member

Claims (1)

[Scope of utility model registration request] 1. A water receiving means for receiving cooling water flowing down from the filling material at a position below the filling material provided in the cooling tower, and cooling provided outside the cooling tower and received by the water receiving means. A part of the water is adjusted to be discharged to the outside of the system and is returned to the circulation system to adjust the discharge flow rate of the cooling water, and a water pipe connecting the water receiving means and the flow rate adjusting means. The flow rate adjusting means is provided with a discharge water level adjusting chamber in addition to the water head adjusting chamber by partitioning the inside of the adjusting box main body with a partition wall, and the cooling water inflow port and the cooling water overflow port are provided in the water head adjusting chamber. And the discharge flow rate of the cooling water flowing from the water head adjustment chamber into the discharge water level adjustment chamber is adjusted by sliding an orifice plate having several holes of different diameters. Is the cooling tower Blow apparatus.