JPH04116383A - Crossing type cooling tower and method for manufacturing front water sprinkling device used in the cooling tower - Google Patents

Abstract

PURPOSE:To provide a substantial uniform distribution of circulating water over an entire filling material and prevent the circulating water from being dispersed outside of it by a method wherein some air passages are formed between a plurality of planer flat vertical troughs, one end of a surrounding air intake port of each of the vertical troughs is closed, the other end near the filling material is opened to form a circulating water supplying port. CONSTITUTION:A plurality of corrugated filling materials 12 are spaced apart in a side-by-side relation in a width direction of a surrounding air intake port 11 of a main body 10 of a cooling tower. The main body 10 of the cooling tower is filled with the martial below an upper water sprinkling device 13 of the cooling tower. A front water sprinkling device for supplying a cooling water to an entire region 12a of front and rear parts of the filling materials at one side edge 14 is disposed between one side edge 14 of each of the filling materials 12 and the surrounding air intake port 11. The front water sprinkling device B is composed of a plurality of planer substantial flat vertical troughs 20 spaced apart in a side-by-side relation in a width direction of the surrounding air intake port 11. One end 22 of the surrounding air intake port 11 of each of the vertical troughs 20 is closed, the other end 23 near the filling material 12 is opened to act as a circulating water supplying port 24. Then, the circulating water sprinkled onto the filling material from the upper water sprinkling device and the circulating water from the front water sprinkling device are directly contacted to the surrounding air flow taken into the main body of the cooling tower from the surrounding air intake port, receives the action of latent heat and they are cooled, dropped and collected into a lower water tank.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) This invention relates to a cross-flow cooling tower and a method for manufacturing a front water sprinkler used therein.

<Conventional technology> In a conventional cross-flow type cooling tower, circulating water is sprayed from the -L water tank to the filling material filled in the cooling tower body, and the filling material is
Circulating water is sprayed from the upper water tank, and the circulating water flowing down the filler material is brought into contact with the horizontally flowing air flow taken into the main body from the outside air intake and cooled.

<i1i that the invention attempts to solve! Problem: In this type of cooling tower, the circulating water that falls toward the lower part of the filling material is stirred by the air flow taken in by the circulating water pump while the filling material is flowing down. A wet wall is not formed in the outer part of the lower part of the filling material that is drawn toward the mouth, and heat exchange is not performed in the area closer to the outside air intake LJ.

This means that the packed surface area is not fully utilized for heat exchange, and it is necessary to increase the volume of the cooling tower in this area.

The first object of the present invention is to distribute circulating water approximately evenly throughout the filling material and prevent it from scattering to the outside by arranging a front water spraying device without forming a special circulating water return groove in the filling material itself. An object of the present invention is to provide the market with a cross-flow type cooling tower that prevents the above problems.

A second object of the present invention is to provide a method for manufacturing the front water spraying device in the same manner as a normal filler.

9. Structure of the invention (means for solving the problem) In order to solve the above problem, this specific invention: i. A corrugated plate-like structure in the width direction of the outside air intake 1 of the cross-flow type cooling tower main body. A plurality of fillers are arranged in parallel at intervals and filled inside the main body of the cooling tower using an upper water sprinkler for 1 hour of cooling, and between one side edge of each filler and the outside air intake, A front water sprinkler system is installed to supply cooling water to the entire front and back surfaces of the cupboard, which is filled with water on one side of the cupboard. It consists of a substantially flat downpipe body, an air passage is formed between adjacent downpipe bodies, one end of each downpipe on the outside air intake side is closed 11-, and the other end close to the filler material is open. Circulating water supply [Kuchishide]

It is preferable that the upper and lower ends of the downpipe body are open, and that one end of the downspout body is located below the upper water device.

The height of the downpipe body is approximately half the height of the filler, and the downpipe body is formed in a shape that sprays circulating water downward from at least the middle position of the filler at the one side edge. Distribution of circulating water (- preferred).

The height of the downspout is the same as the height of the filler, and the circulating water supply port opened at the other end near the filler is the same as -L.
It may be characterized in that the upper end, which is closer to the sprinkler device, is narrower, and the closer it is to the lower end, the wider it is, and the discharge amount at the -F end is very large when the circulating water supply is zero.

A corrugated plate identical to the filling material is interposed in series with the filling material between adjacent downpipe bodies, and a gas-liquid contact passage is formed between the interposed corrugated plate and the downpipe body. In some cases,

The downpipe body has two uneven plates parallel to each other, one end of which is stuck together, and the other end left open.
The optimum structure of the downpipe body is that a circulating water reservoir is formed between two uneven plates, and these uneven plates extend along the air flow.

The downpipe body is a substantially elliptical column that is elongated in the air flow direction when viewed from above, and the end of the elliptical column closer to the filling material is open and serves as the circulating water supply port. The structure of the gutter body is simplified.

The vertical gutter body is composed of a cylindrical body, and the circumferential surface of the cylindrical body near the filling port is open and serves as the circulating water supply port, and these cylindrical bodies are arranged in the air flow direction and in relation to the air flow direction. It may also be characterized in that a plurality of them are arranged in parallel at intervals in two directions orthogonal to each other, with their orientations being the same.

The method for manufacturing the front sprinkler device according to claim 1 includes reversing two uneven plates having the same shape and the same size,
A plurality of units are stacked in a layered manner with spacers in between, with both ends pasted together parallel to each other and a space formed in the center, and this stacked body is divided in the stacking direction at the center, and one end is The present invention is characterized in that two front water sprinklers are manufactured at the same time, each of which is closed and whose other end is open and serves as a circulating water supply port.

(effect) Next, the operation of the cooling tower of the specific invention will be explained.

Similar to the known cross-flow type cooling tower, the present invention has a two-part water sprinkler system in which circulating water is sprayed down onto a corrugated plate-shaped packing material filled in the cooling tower body. At this time, a part of the circulating water flowing down while filling the inside of each downpipe in the 1-blind watering device placed near the outside air intake is transferred from the circulating water supply port of each downpipe body to the outside air intake of each filler. The water is ejected over its entire height toward one side edge near the mouth, and the water is drawn by the air flow that passes between the adjacent downspout bodies and flows toward the exhaust port, and is sprayed on one side edge of the filled month. .

The circulating water sprayed from the two-part water sprinkler to the filler and the circulating water of the second water sprinkler come into direct contact with the outside air flow taken into the cooling tower body from the outside air intake, causing a latent heat effect. It is cooled down, collected in a lower water tank, and then supplied to loads such as refrigerators.

Next, in winter when the outside temperature is low, if the rotation speed of the cooling tower's blower is lowered to reduce the amount of air taken in, that is, the amount of air discharged, the circulating water is exhausted by the horizontal air flow. The phenomenon of being drawn to the side is reduced, and the circulating water tends to flow directly below. In particular, some of the circulating water near the outside air intake collides with the water surface of the lower water tank and is cooled from the outside air intake. Although the water droplets try to scatter outside the tower, the water droplets scattered toward the front sprinkler are captured by the circumferential surface of the downpipe body of the front sprinkler and returned to the filling material side.

It should be noted that while the circulating water is flowing down the downspout, it is indirectly cooled by the horizontal air flow flowing in the air passage, and in this state is discharged from the supply I'' to the filling material side.

In the invention as set forth in claim 2, in addition to the effects of the specific invention, a part of the circulating water supplied from the load section to the two-part watering device and sprayed onto the filler (2) is supplied to each downpipe body. The circulating water flows into the downpipe body from the upper part and is discharged from the supply port toward the side edge of the filling material, and the remaining circulating water that has flowed down the downpipe body flows out from the lower end into the lower water tank. On this occasion,
A portion of the circulating water is also sprinkled on the outer circumferential surface of the downspout body, which also forms a wet wall similar to the above-mentioned filler material, comes into direct contact with the air flow, and is cooled by the latent heat of vaporization. The water then flows along the outer circumferential surface of the downspout body and is collected in the lower water tank.

The effect of the invention described in claim 3 is that, in addition to the effect of the specific invention, the supply of circulating water from the downpipe body to the filling material is sprayed downward from the middle stage of the filling H, and the upper water sprinkling device In the invention according to claim 4, the wet wall is forcibly formed even in a region where the circulating water supplied to the filler is likely to be non-dispersed, and the circulating water is cooled in the entire region of the filler. In the second part of the filler, there is less tendency for the circulating water to be drawn toward the exhaust port by the airflow, so the amount of circulating water discharged from each downpipe body in the front sprinkler system is reduced, and the flow is mainly from the upper sprinkler system. A wet wall is formed on the top of the filler by the sprayed circulating water. On the other hand, after the middle stage of the filler, this circulating water has a greater tendency to be drawn toward the exhaust port side, and non-sprinkling areas are likely to occur, but the amount of circulating water discharged from each downpipe body is The number of holes increases from the side of the filling material, and a wet wall is formed by the circulating water supplied from this front sprinkler even after the middle stage of the filler.

In the invention set forth in claim 5, in addition to the effect of the specific invention, a part of the circulating water is also sprayed on the front and back surfaces of the corrugated plates interposed between adjacent downpipe bodies, forming wet walls. Similarly to the filling material, gas-liquid contact occurs in this portion, and the circulating water is cooled by the latent heat of vaporization.

In the invention as set forth in claim 6, a part of the circulating water is stored in the reservoir between the two uneven plates forming the downpipe body, and a part of the circulating water is stored in the reservoir at the open end of the reservoir. It is discharged from the side toward one side edge of the filler, and the airflow spreads it over the front and back surfaces of the filler.

At this time, a part of the circulating water flowing down comes into indirect contact with the air flow through the uneven surface of the uneven plate and is slightly cooled.

Other effects are the same as those of the specific invention.

In the invention set forth in claim 7, the airflow flows horizontally smoothly along the circumferential surface of the oval card, and a part of the circulating water discharged from the supply port riding on this airflow reaches one side edge of the filler. Scattered in the vicinity.

In the invention as set forth in claim 8, the circulating water is sequentially sprayed from the cylindrical body located on the upstream side of the air flow to the circumferential surface of the cylindrical body on the adjacent downstream side, and a wet wall is formed on the outer circumferential surface of each cylindrical body. A part of the circulating water is also cooled by gas-liquid contact in this part.

Embodiments (First Embodiment) Next, typical embodiments of the invention described in claims 1 to 3 will be described.

In Fig. 1, A is a cross-flow type cooling tower, and a plurality of corrugated plate-shaped filling materials 12 are arranged in parallel at intervals in the width direction of the outside air intake port 11 of the cross-flow type cooling tower main body]0. It is filled in the cooling tower main body 10 below the tower upper water sprinkler 13,
Between one side edge 1-4 of each filler 12 and the outside air intake port 11, cooling water is supplied to the filled front and back surfaces 12 on the side edge 14 side.
A front water sprinkler system is installed to supply water to a. This front water sprinkler B consists of a plurality of substantially flat downspout bodies 20 arranged in parallel at intervals in the width direction of the outside air intake port 1, and one end 22 of each downspout 20 on the outside air intake port 1 side. is closed, and the other end 23 close to the filler 12 is opened and the circulating water supply port 24 is opened.
It's Toshide.

The downpipe body 1 is open at its upper and lower ends;
The end is located below the 8-part watering device 13.

Further, the height of each downpipe body 20 is approximately 2 of the height of the filler 12.
The downpipe body 20 is formed in a shape that sprays circulating water downward from at least the middle position of the filler 12 on the one side edge 14 (see FIG. 1).
. Although the downspout body 20 may be made of metal, it is preferably molded from a synthetic resin plate.

A corrugated plate 25 that is the same as the filler 10 is interposed in series with the filler 12 between the adjacent downpipe bodies 20, and air is created between the interposed corrugated plate 25 and the downpipe body 20. Liquid contact passage 2
1 (see Fig. 2).The downpipe body 20 has two uneven plates 26 and 27 parallel to each other, one end 20 of which is pasted together, and the other end 23
is in an open state, and a circulating water reservoir 28 is formed between these two uneven plates 26 and 27.
．． 27 extends along the air flow (see FIG. 2).

Since the operation of this embodiment corresponds to the operation of the invention described in claims 1 to 3 or claims 5 to 6, a description thereof will be omitted here to avoid duplication.

<Second Embodiment> This is a typical embodiment of the invention set forth in claim 4, in which the height of the downpipe body 20 is set to the height of the filling material 1-2, and the height of the downpipe body 20 is set to the height of the filling material 1-2, and the height of the downpipe body 20 is set to the height of the filling material 1-2. The circulating water supply port 24, which is open at the end 23, is narrow at one end near the upper water sprinkling device 13 and wider as it approaches the lower end, and the amount of discharge from the circulating water supply port 24 is reduced. It is characterized in that the lower end is increased in height (see Figures 3 and 4).

Otherwise, the same reference numerals as in the first embodiment have the same configurations and functions.

<Third Embodiment> This is an embodiment of the invention described in claim 7, in which the downpipe body is a substantially elliptical column 20 elongated in the air flow direction when viewed from above.
It is a. The end of this elliptical column 20a closer to the filling month 12 is open and serves as the Wi ring water supply 24 (see FIG. 5).

The rest is the same as the first embodiment. The operation thereof is the same as that of the invention described in claim 7, so a description thereof will be omitted.

<Fourth embodiment> This is a typical embodiment of the invention described in claim 8, and the difference from the first embodiment is that [the downpipe body is a cylindrical body 20b
The peripheral surface of the cylindrical body 2o) near the filler 12 is open and serves as the circulating water supply port 24, and these cylindrical bodies 20b are perpendicular to the air flow direction and the air flow direction. A plurality of them are arranged in parallel at intervals in two directions with their orientations being the same (see Fig. 6). Since its operation is the same as that of the invention described in claim 8, the explanation here will be omitted.

Next, an example of a method for manufacturing the front water sprinkler device 1\B will be explained. First, two uneven plates 26 with the same shape and the same dimensions
．． A plurality of units L-C are formed by turning 27 upside down and making them parallel to each other, and pasting their ends F and G together to form a space H in the center. This stacked body is divided in the stacking direction at the center E, and one end 22 thereof is closed and the other end 23 is opened. Manufacture (7th
(See Figures (a) and (b)).

C1 Effects of the invention Next, the effects of the cooling tower of the specific invention will be explained.

Flow that fills each downpipe in the front water sprinkler]
A portion of the circulating water is supplied to each downpipe body [
-1, the filling material flows out over its entire height toward one side edge near the outside air intake port, and is drawn by the air flow passing between adjacent downspout bodies and flowing toward the exhaust port side. Since it is sprayed on one side edge of the material, it is possible to reduce the proportion of non-sprayed areas occurring on the front and back surfaces with filling.

The circulating water sprayed onto the filler from the two-part water sprinkler and the circulating water from the front water sprinkler come into direct contact with the outside air flow taken into the cooling tower body from the outside air intake, and a slight latent heat effect occurs. The cooled water is collected by falling into the lower water tank and supplied to a load unit such as a refrigerator, so this front water sprinkler can also promote cooling of the circulating cooling water.

Further, the water droplets scattered toward the front water sprinkler are captured by the circumferential surface of the downpipe body of the front water sprinkler and returned to the filling material side, so that it is possible to avoid getting the undercarriage of the cooling tower wet.

Moreover, the circulating water flowing in the downpipe can be indirectly cooled by the horizontal air flow flowing in the air passage while the water is flowing down.

In the invention as set forth in claim 2, in addition to the effect of the specific invention, a portion of the circulating water supplied from the load section to the upper water spraying device and sprayed onto the filler is supplied to the "2" of each downpipe body. The remaining circulating water that has flown down the downspout body can flow into the lower water tank from its lower end without requiring a separate water sprinkler. On this occasion,
A part of the circulating water is also sprinkled on the outer peripheral surface of the downpipe body, and a wet wall is formed on this surface as well as the above-mentioned filler material, and it comes into direct contact with the air flow and receives the latent heat of vaporization for cooling. This allows the circulating water to flow down along the outer circumferential surface of the downspout body.

In the invention according to claim 3, in addition to the effects of the specific invention, the supply of circulating water from the downpipe body to the filling material is performed from the middle stage of the filling material downwards, by providing an upper several water supply system. A wet wall is forcibly formed in the middle of the packing material, which is an area where the circulating water supplied from the equipment to the packing material tends to become a non-sprinkling area, and this makes it possible to promote cooling of the circulating water throughout the filling material, and Materials can be used effectively.

In the invention set forth in claim 4, based on the phenomenon that circulating water is less likely to be drawn toward the exhaust port by air flow in the second part of the filler, the circulating water is removed from each downpipe body in the front sprinkler device. By restricting the amount of circulating water discharged, a wet wall can be formed on the top of the filler by the circulating water mainly sprayed from the upper water spray device.

On the other hand, after the middle stage of the filler, this circulating water has a greater tendency to be drawn toward the exhaust port side, and non-sprinkling areas are likely to occur, but the amount of circulating water discharged from each downpipe body is ” The rows spread from the second part side, and even after the middle stage of the filler, a wet wall is formed by the circulating water supplied from this front sprinkler,
Similar to the invention described in claim 4, A[;, the circulating water can be sufficiently supplied to the one side edge, and the circulating water can be cooled over the entire region of the filler.

In the invention described in claim 5, in addition to the effect of the specific invention, a wet wall is provided on both the front and back surfaces of the corrugated plate interposed between adjacent downpipe bodies and the part where a part of the circulating water is sprayed. In this corrugated plate as well, gas-liquid contact occurs in the same manner as the filler, and the circulating water can be cooled by the latent heat of vaporization.

In the invention set forth in claim 6, in particular, a part of the circulating water is supplied to the reservoir between the two uneven plates forming the downpipe body.
A part of this circulating water can be discharged from the entire height of the supply end, which is the open end, toward the side edges of the filling material, and can be sprayed on the front and back surfaces of the filling material by air flow.

At this time, a part of the circulating water flowing down is brought into indirect contact with the air flow through the uneven surface of the uneven plate, and can be cooled slightly.

In the invention as set forth in claim 7, the air flow can be caused to flow horizontally, particularly along the circumferential surface of the elliptical cylinder, and a part of the circulating water discharged from the supply port riding on this air flow is transferred to the filling material. It can be sprayed near one side edge.

In the invention as set forth in claim 8, circulating water is sequentially sprayed from the cylindrical body located on the upstream side of the air flow to the circumferential surface of the cylindrical body on the adjacent downstream side, and the outer circumferential surface of each cylindrical body is sprayed. It can be formed on a wetted wall, and a part of the circulating water can be cooled by gas-liquid contact in this part as well.

Next, in the invention as set forth in claim 9, two front water sprinklers as set forth in claim 6 can be manufactured at a time.

[Brief explanation of drawings]

The figures relate to this invention, and Fig. 1 is a schematic diagram showing the first embodiment of a cross-flow cooling tower, Fig. 2 is a plan view of its front water sprinkler, and Fig. 3 is a second embodiment of the cross-flow cooling tower. Schematic diagram showing the fourth
The figure shows a front view of the front sprinkler, FIGS. 5 and 6 show examples of other front sprinklers, and FIGS. 7(a) and 7(b) show the manufacturing process of the front sprinkler. The upper symbol B in the diagram is the front water sprinkler device.

Claims (1)

[Claims] 1) A plurality of corrugated packing materials are arranged in parallel at intervals in the width direction of the outside air intake of the cross-flow type cooling tower main body, and are arranged in the cooling tower main body below the cooling tower upper sprinkler device. A front water sprinkling device is arranged between one side edge of each filler and the outside air intake port to supply cooling water to the filled front and back surfaces on the one side edge side. , consisting of a plurality of substantially flat downspout bodies arranged in parallel at intervals in the width direction of the outside air intake, an air passage is formed between adjacent downspout bodies, and one end of each downspout on the outside air intake side A cross-flow cooling tower characterized in that one end is closed and the other end near the filler is open and serves as a circulating water supply port. 2) The cross-flow type cooling tower according to claim 1, wherein the upper and lower ends of the downpipe body are open, and the upper end is located below the upper water sprinkler device. 3) The height of the downpipe body is approximately half the height of the filler, and the downpipe body is shaped to spray circulating water downward from at least the middle position of the filler on the one side edge. 2. The cross-flow cooling tower according to claim 1, wherein: is formed. 4) The height of the downpipe body is the same as the height of the filling material, and the circulating water supply port opened at the other end closer to the filling material is narrower toward the upper end, which is closer to the upper sprinkler device, and narrower toward the lower end. 2. The cross-flow cooling tower according to claim 1, wherein the width of the cooling tower is increased as the water approaches the lower end of the cooling tower. 5) A corrugated plate identical to the filling material is interposed in series with the filling material between the adjacent downpipe bodies, and a gas-liquid contact passage is formed between the interposed corrugated plate and the downpipe body. A cross-flow cooling tower according to claim 1 or 4, which is formed. 6) The downpipe body is made up of two uneven plates arranged parallel to each other, one end of which is stuck together and the other end left open, and a circulating water reservoir is formed between these two uneven plates. 6. A cross-flow cooling tower according to claim 1, wherein the plate extends along the air flow. 7) A patent characterized in that the downpipe body is a substantially elliptical cylinder elongated in the air flow direction when viewed from above, and the end of the elliptical cylinder closer to the filling material is open and serves as the circulating water supply port. A cross-flow cooling tower according to claim 1. 8) The downpipe body is composed of a cylindrical body, and the circumferential surface of the cylindrical body near the filler material is open and serves as the circulating water supply port, and these cylindrical bodies 2. A cross-flow type cooling tower according to claim 1, wherein a plurality of cross-flow cooling towers are arranged in parallel at intervals in two orthogonal directions and facing the same direction. 9) Two uneven plates of the same shape and size are turned upside down and parallel to each other, and the two ends are pasted together to form a space in the center. A plurality of units are formed in a layered manner via spacers. The cross-flow cooling system according to claim 6, wherein the stacked body is divided in the stacking direction at the middle part of both ends, one end of which is closed and the other end is opened to serve as a circulating water supply port. A method for manufacturing a front water sprinkler for a cross-flow cooling tower, characterized by manufacturing two front water sprinklers for the tower at the same time.