JP2583148Y2 - Crossflow cooling tower - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a cross-flow cooling tower.

[0002]

2. Description of the Related Art As a water supply device for an upper water tank of a cross-flow type cooling tower of this type, the applicant company has proposed a system for supplying a circulating cooling water supply pipe in an internal piping system started up through the inside of the cross-flow type cooling tower. An upper end discharge portion is piped through the bottom of the upper water tank, and a watering box surrounding the upper end discharge portion of the supply pipe from above is arranged on the bottom surface of the upper water tank, and is located and opened in the watering box. A disk for opening and closing the upper discharge part of the supply pipe is provided in the watering box so as to be vertically adjustable with respect to the upper discharge port of the supply pipe, and the disk is operated so as to be vertically displaced from outside the watering box. A water supply device that opens and closes the upper discharge section of the supply pipe has been developed.

[0003]

In the developed water supply system for the upper water tank of the cross-flow cooling tower, since the upper end discharge portion of the supply pipe is opened and closed by a disk, the supply amount of the circulating cooling water is small. It is difficult to adjust the amount of circulating cooling water, and this disk has only a function of switching only the full opening and closing of the supply of circulating cooling water, and is not suitable for adjusting the supply amount of circulating cooling water. It is an object of the present invention to provide a cross-flow cooling tower which improves on the drawbacks of the above-mentioned conventional technology and enables fine adjustment of the supply amount of circulating cooling water to an upper water tank with a simple structure. .

[0004]

In order to solve the above-mentioned problems, a specific invention is to arrange a filler inside a cross-flow cooling tower and to start up along the inside which is the exhaust side of the filler. The upper end of the circulating cooling water supply pipe in the internal piping system is bent horizontally along the upper end of the filler above the filler, and a short pipe forming a discharge part is connected to the tip thereof, and the short pipe is connected to the bottom. And a watering box surrounding the short pipe of the supply pipe from above is disposed on the bottom surface of the upper water tank, and is located in the watering box. An inverted conical flow control valve for adjusting the discharge flow rate from the short pipe of the supply pipe which is opened is adjustable up and down with respect to the discharge port of the short pipe of the supply pipe so that the position can be fixed. The upper end of the valve stem of this flow valve is A handle is attached to the upper end of the valve stem, and an opening is formed near the lower part of the side wall of the watering box, and the opening is formed at a position higher than the upper edge of the opening. A cross flow cooling system characterized in that the edge of the discharge port of the short pipe is located, and the short pipe is fixed to the bottom of the upper water tank via a flange provided on the outer periphery near the lower end of the short pipe. There is as a tower. In order to solve the above-mentioned problem, a related invention is characterized in that the internal piping system is provided with a riser pipe provided along the inside of the filler that receives circulating cooling water from a load portion, and a filling pipe that fills the upper water tank from the riser pipe. It is desirable to comprise a horizontal pipe extending horizontally in the gap between the materials, and the short pipe extending upward from the horizontal pipe and penetrating the bottom of the upper tank.

[0005]

The operation of the first aspect of the present invention will be described below. The circulating cooling water (warm water) sent from a load unit such as a refrigerator passes through an internal piping system rising along the inside of the filler, and the circulating cooling water discharged from the short pipe is directly discharged to the straight pipe. Once it does not flow into the upper water tank of the AC cooling tower, it once collides with the entire area of the inverted conical surface of the inverted conical flow regulating valve, and its flow is deflected from upward to downward, and then directed downward to the watering box. Flowing. Therefore, the inverted conical flow valve also functions as a drift component of the circulating cooling water. After the discharged circulating cooling water flows so as to fill the watering box, it flows out of the watering box into the upper water tank of the crossflow cooling tower, and from a group of watering holes provided on the entire bottom of the upper water tank. It flows down and flows below the upper water tank along the filler filled in the cross-flow cooling tower body. While flowing down the filler, the circulating cooling water and the horizontal air flow come into contact with each other in a cross-flow, and a part of the circulating cooling water evaporates. Is done. The cooled circulating cooling water is collected in a lower water tank of the crossflow cooling tower, and then sent to the load section.

Further, in the present invention, when it becomes necessary to adjust the discharge flow rate from the upper end discharge portion of the supply pipe, the handle located outside the watering box is rotated to operate the valve stem. The position is moved up and down, and the amount of feeding of the inverted conical flow control valve to the upper discharge portion of the supply pipe is adjusted, and the gap between the upper discharge port of the supply pipe and the inverted conical flow valve is adjusted. Is changed to change the discharge loss pressure of the circulating cooling water so that the discharge loss from the discharge port of the short pipe is adjusted by vertically adjusting the discharge port. After adjusting the discharge flow rate from the discharge port of the short pipe in this way, the inverted conical flow rate control valve is fixed to the adjustment position using a fixing means such as a lock nut. An opening is formed near the lower part of the side wall of the watering box, and the rim of the discharge port in the short pipe is located at a position higher than the upper edge of the opening. Discharge from the discharge port of the short pipe at a higher position, slightly turbulent, through the opening formed near the lower part of the side wall of the watering box in a state where the flow velocity at the time of discharge from this short pipe is weakened The water flows into the upper water tank of the cross-flow cooling tower, and is sprayed onto the filler from a group of water holes provided in the entire bottom of the upper water tank. In the device according to the second aspect, the following operation is performed in addition to the operation of the device according to the first aspect. A horizontal pipe is provided in the gap between the upper water tank and the filler without changing the shape and arrangement of the short filler, and the circulating cooling water (hot water) that has passed through the riser pipe passes through the horizontal pipe. It is sent to a short pipe and supplied to the upper water tank.

[0007]

[Embodiment 1] A representative embodiment of the present invention will be described below. In FIG. 1, B is a cross-flow cooling tower, in which fillers are arranged along louvers, which are external intakes of the cross-flow cooling tower B. A shows an entire apparatus for supplying circulating cooling water to an upper water tank C of the crossflow cooling tower B via an internal piping system D. Along the inside on the exhaust side of the filler, the horizontal pipe extending horizontally from the riser pipe 10 as the circulating cooling water supply pipe in the riser internal piping system D into the gap between the upper water tank C and the filling plate. Pipes are plumbed. A short pipe 11 extending upward and penetrating the bottom surface of the upper water tank C is provided at a tip of the horizontal pipe.
A discharge portion of the circulating cooling water is formed by the short pipe 11. A watering box 12 surrounding the short pipe 11 from above is disposed on the bottom surface of the upper water tank C. This watering box 1
An inverted conical flow control valve 13 for adjusting the discharge flow rate from the short pipe 11 which is located inside and opens
It is provided in the watering box 12 so as to be vertically adjustable with respect to the discharge port 11a and to be fixed in position. The upper end of the valve rod 14 of the flow regulating valve 13 penetrates the upper surface of the watering box 12 and
The handle 15 is attached to the upper end of the valve stem 14. Reference numeral 16 denotes a lock nut for fixing the valve stem 14 to its adjustment position as needed. The watering box 1
An opening 12b is formed near the lower part of the second side wall 12a, and an edge 11b of the discharge port 11a of the short pipe 11a is located at a position higher than the upper edge 12c of the opening (see FIG. 2). . The short pipe 11 is fixed to the bottom surface of the upper water tank C by a flange projecting toward the outer periphery near the lower end.

Second Embodiment This embodiment is a modification of the first embodiment, and is different from the first embodiment.
A plurality of cross-flow cooling towers B are arranged in parallel, and these cooling towers B are divided into at least two systems, and the water spray box 12 is arranged in each cooling tower B (FIG. 3). reference). Other structures are the same as those in the first embodiment. The operation of each of the above embodiments is the same as the operation of the invention described in the corresponding claims, and a description thereof will be omitted.

[0009]

According to the first aspect of the present invention, the short pipe forming the upper end discharge portion is fixed to the bottom of the upper water tank via a flange provided on the outer peripheral surface near the lower end thereof. Without cutting out the shape filler,
A general-purpose filler can be used, and the circulating cooling water can be sprayed from the upper water tank without any trouble on the filler, so that the cooling capacity does not decrease. In addition, almost all of the short pipe is located in the upper water tank, which does not hinder the intake of outside air from the louver. Further, by providing the inverted conical flow control valve in the watering box so as to be vertically adjustable with respect to the upper end discharge portion of the supply pipe and to be fixed in position, the position of the flow valve is vertically displaced. The discharge flow rate from the upper end discharge section can be finely adjusted, and the flow control valve can be fixedly held at this adjustment position. In addition, since the flow control valve has an inverted conical shape, the circulating cooling water discharged from the upper end discharge portion of the supply pipe smoothly flows in the outer peripheral direction, and flows from the gap between the flow control valve and the discharge port of the short pipe. The discharged circulating cooling water can be deflected downward.

An opening is formed near the lower part of the side wall of the watering box, and the upper edge of the supply pipe is located at a position higher than the upper edge of the opening. Water is discharged from the outlet of the short pipe at a position higher than the upper edge of the opening, and after being slightly turbulent, the flow rate at the time of discharging from the upper end discharging portion is weakened and the lower part of the side wall of the watering box is discharged. The water can flow out into the upper water tank of the cross-flow cooling tower through the opening formed nearer, and can flow down substantially uniformly from the sprinkling holes provided in the entire bottom of the upper water tank. The related invention described in claim 2 has the following effect in addition to the effects of the invention described in claim 1. That is, since a horizontal pipe connecting the upper end of the riser pipe and the short pipe is provided using the gap between the upper water tank of the cooling tower and the filler, it is necessary to process the filler filled in the cooling tower. The cooling water can be supplied to the upper water tank without increasing the height of the cooling tower without any need.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of a first embodiment.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a schematic plan view of a second embodiment.

[Explanation of symbols]

 10 Circulating cooling water supply pipe 12 Sprinkling box 13 Flow control valve

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model 49-47947 (JP, U) Japanese Utility Model 1-101096 (JP, U) Japanese Utility Model 48-74150 (JP, U) (58) Survey Field (Int.Cl. ⁶ , DB name) F28F 25/02 F28C 1/04

Claims (2)

(57) [Scope of request for utility model registration] A filler is disposed inside a cross-flow cooling tower,
The upper end of the circulating cooling water supply pipe in the internal piping system that rises inward along the exhaust side of the filler is bent horizontally along the upper end of the filler above the filler, and discharges at the tip. A short pipe forming a portion is connected, the short pipe penetrates a bottom surface of an upper water tank having a large number of water spray holes at a bottom, and a water spray box surrounding the short pipe of the supply pipe from above is provided in the upper water tank. An inverted conical flow control valve for adjusting the discharge flow rate from the short pipe of the supply pipe, which is located in the watering box and is open, is disposed on the bottom of the short pipe of the supply pipe. The sprinkler box is vertically adjustable with respect to the discharge port and can be fixed in position. The upper end of the valve stem of this flow valve penetrates the upper surface of the sprinkler box and is located outside the sprinkler box. A handle is attached to the sprinkler box. Is formed at a position higher than the upper edge of the opening, and the edge of the discharge port of the short tube is located. Near the lower end of the short tube, the short tube is connected via a flange provided on the outer peripheral portion. A cross-flow cooling tower fixed to the bottom of the upper water tank. 2. The internal piping system includes a riser pipe provided along the inside of the filler for receiving circulating cooling water from a load portion, and a horizontal pipe extending from the riser pipe into a gap between the upper water tank and the filler. 2. The cross-flow cooling tower according to claim 1, comprising: a horizontal pipe extending from the horizontal pipe; and the short pipe extending upward from the horizontal pipe and penetrating the bottom of the upper water tank.