JP2011220652A - Filler material, and filler sheet for cooling tower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filler material for a cooling tower which can stably hold sheets for the filler material, mutually, and to provide the sheets for the filler material constituting the filler material.SOLUTION: In the filler material for the cooling tower which is composed of a plurality of sheets for the filler material stacked inside the cooling tower, and in which raw water is supplied from the one side into an interlayer of the sheets for the filler material, and the open air is supplied from the other side, thereby bringing the raw water into contact with the open air for cooling, the plurality of sheets for the filler material have a plurality of protruding parts and recess parts, respectively, the protruding parts and recess parts are formed in a flattened circular truncated cone shape long in a flow direction of the open air, the protruding parts extend so as to reach the sheets for the filler material adjacent on the one side in a stacking direction, the protruding parts are constituted to have top ends which fit into the recess parts formed in the adjacent sheets for the filler material, thereby holding interlayer intervals of the sheets for the filler material, and with the arrangement, a reinforcing rib in a direction crossing a longitudinal direction of each recess part is formed on the surface on the protruding side of the recess part in each sheet for the filler material in a halfway portion in the longitudinal direction of each recess part.

Description

  The present invention relates to a cooling tower filler that is disposed in a cooling tower and cools raw water in contact with outside air, and a filler sheet that constitutes the cooling tower filler.

Conventionally, the cooling water discharged from air conditioning equipment such as factories and buildings has been heated to become hot water, and thus it is difficult to circulate as it is as cooling water. For this reason, the method of cooling and using the cooling water using a cooling tower is adopted.
This type of cooling tower cools raw water by exchanging heat between the raw water and the outside air by bringing the outside air drawn from the outside into contact with the raw water (cooling target water) flowing in the specified direction. Is used.

  In such a cooling tower, the inside is filled with a cooling tower filler formed by laminating a plurality of sheets of filler material as plate members so that raw water flows between the layers of the filler (usually between the layers) So that raw water is supplied between the layers from above and outside air is supplied from the side, and heat exchange is performed by contact between the raw water and the outside air. It is configured.

  By the way, in the filler as described above, conventionally, it is usually laminated from the viewpoint of securing the interlayer distance to which raw water and outside air are supplied and from the viewpoint of sufficiently bringing the raw water supplied between the layers and the outside air into contact. The filler sheet is provided with a number of columnar protrusions (Patent Document 1).

  That is, in such a filler, the protrusions secure a gap between the raw water and the outside air supplied between the layers of the laminated filler sheets, and the raw water supplied between the layers is provided to the protrusions. The residence time of the raw water flowing between the layers is increased by collision and the splash effect (the effect of promoting the gas-liquid contact by increasing the liquid surface by making the water droplets fine) is excellent in heat exchange rate. It will be a thing.

JP 2007-120919 A

However, in the above conventional filler, when the number of protrusions of the filler sheet is increased in order to increase the heat exchange rate, the opening ratio (the outside air of the filler sheet is supplied in the filler). As a result, the ratio of the projected openings in the entire area between the layers is low, and the pressure loss for supplying the outside air between the layers increases.
On the other hand, when the number of protrusions is reduced, the aperture ratio increases and the pressure loss decreases, but the corresponding collision between the raw water and the protrusions decreases, and the heat exchange rate decreases.

Therefore, the applicant of the present application formed the protrusions as flat protrusions formed in a flat truncated cone shape that is long in the flow direction of the outside air as a configuration that can reduce the pressure loss and suppress the decrease in the heat exchange rate. Proposed cooling tower fillers and filler sheets.
If the flat protrusion is made flat and long in the direction of the outside air flow, the raw water supplied from above often collides with the extent that the outside air collides. Therefore, the pressure loss can be reduced as compared with those having corners, and the residence time of the raw water can be increased and the splash effect can be increased even though the pressure loss is relatively small. .

By the way, from the viewpoint of securing the interlayer spacing of the stacked filler sheets, the protrusions of one adjacent filler sheet protrude from the other filler sheet adjacent to the one filler sheet. It is conceivable to form a recess into which the tip of the part fits.
However, since the protrusion has a flat shape, the fitting state between the protrusion and the recess is unstable.

  Therefore, in view of the above problems, the present invention has an object to provide a cooling tower filler that can stably hold the filler sheets and a filler sheet that constitutes the filler. .

  In order to solve the above-mentioned problem, the present invention comprises a plurality of sheets of filler laminated in a cooling tower, raw water is supplied from one side between layers of the filler sheet, and outside air is supplied from the other. The cooling tower filler is cooled by bringing raw water into contact with the outside air, and each of the plurality of filler sheets has a plurality of protrusions and recesses, and the protrusions and the recesses It is formed in a flat truncated cone shape that is long in the flow direction, and the protrusion is extended to reach the adjacent filler sheet on one side in the stacking direction, and the tip of the protrusion is formed in the adjacent filler sheet. The gap between the layers of the filler sheet is maintained by being fitted to the recesses, and reinforcing ribs in the direction crossing the longitudinal direction are provided in the middle of the longitudinal direction of the respective recesses. It is formed on the protruding side surface of the recess Providing cooling tower filler characterized and.

  In the above configuration, since the protrusion is flat and long in the flow direction of the outside air, the raw water supplied from above often collides with the extent that the outside air collides. Furthermore, since the protrusion has a truncated cone shape and there are no corners at both ends in the longitudinal direction, the pressure loss can be reduced as compared with those having corners. Therefore, although the pressure loss is relatively small, the residence time of the raw water can be increased and the splash effect can be increased.

  Further, reinforcing ribs extending in the longitudinal direction are formed on the protruding side surfaces of the recesses in the filler sheet at midway portions in the longitudinal direction of the respective recesses. Even if they are fitted, the fitting state between the protrusion and the recess is stabilized by the support of the reinforcing rib.

In this invention, the structure by which the longitudinal direction part of the said front-end | tip part and a recessed part is fitted by the elasticity of a reinforcement rib in the fitting state of the front-end | tip part of a projection part and a recessed part is employable.
According to the above configuration, when the concave portion is inserted so as to be expanded by the tip portion of the projection portion, the projection portion and the longitudinal direction portion of the recess portion come into close contact with each other by the elasticity of the reinforcing rib, and the projection portion and the concave portion And are securely fitted.

In the present invention, the entire surface of each filler sheet is formed with an uneven corrugated portion for increasing its surface area by contact with raw water, and the height in the direction along the protruding side surface of the reinforcing rib is uneven. A configuration formed so as not to exceed the height of the corrugated portion may be employed.
According to the above configuration, after securing the supporting force for fitting the protrusions and the recesses due to the elasticity of the reinforcing ribs, it is formed so as not to exceed the height of the corrugated wave-shaped part. It is possible not to disturb the flow.

  This invention is the sheet | seat for fillers which comprises the filler for cooling towers in any one of the said.

  According to the present invention, the reinforcing ribs extending in the longitudinal direction are formed on the protruding side surface of the concave portion in the filler sheet at the midway portion in the longitudinal direction of the concave portion. Even if the portion and the concave portion are fitted, the support of the reinforcing rib suppresses the wobbling of the protruding portion and the concave portion toward the reinforcing rib, and the filler sheets are reliably held.

It is the schematic from the front side of the cooling tower in which the filler for cooling towers concerning one Embodiment of this invention is used. It is the figure (side view) which looked at the filler for the cooling tower from the external air supply side. It is a front view which shows the sheet | seat for the fillers. It is the same part enlarged front view. It is a front view of the projection part formed in the sheet | seat for fillers. It is the same top view. It is the same side view. It is a front view of the projection part formed in the sheet | seat for fillers. It is the same top view and represents the fitting state with a projection part. It is the same side view and represents the fitting state with a projection part. It is the photograph which represented a part of the actual sheet | seat for fillers in the perspective view.

  Hereinafter, an embodiment of the present invention will be described with respect to a cooling tower filled with a cooling tower filler. The cooling tower filled with the cooling tower filler of the present embodiment is for cooling raw water such as cooling water heated and discharged by factory equipment or the like.

FIG. 1 is a schematic view from the front side showing the cooling tower.
The cooling tower has a substantially cylindrical or prismatic casing 50 in which an outside air inlet 51 is formed on the side surface and an outside air outlet 52 is formed in the center of the upper surface, and the outside air inlet 51 is provided inside the casing 50. The cooling unit 60 that contacts the raw water A and the outside air B and cools the raw water A by heat exchange, and the raw water supply unit that is disposed above the cooling unit 60 so as to supply the raw water A to the cooling unit 60 by spraying water. 70, a chilled water tank 80 for storing chilled water cooled by the cooling unit 60, and a ventilation space 90 formed in the central portion of the casing 50 so as to be surrounded by the cooling unit 60, used for cooling. And a blower 100 that discharges the outside air B to the outside air outlet 52.

The cooling unit 60 is disposed on the outer side in the casing 50 so that the ventilation space 90 is formed on the center side in the casing 50.
The cooling unit 60 is filled with the cooling tower filler 1 connected in a plurality of stages in the vertical direction, and the raw water A supplied from above by the raw water supply unit 70 and the outside air intake 51 of the casing 50 are connected. The outside air B supplied from the side through the heat exchange is performed in the cooling tower filler 1, the cooled raw water A is discharged into the cold water tank 80, and the outside air B heated by the heat exchange is disposed in the central portion. It is comprised so that it may discharge to the ventilation space 90.

Next, the filler sheet 5 constituting the cooling tower filler 1 of the present embodiment packed in a plurality of stages in the cooling tower as described above will be described.
FIG. 2 is a view of the cooling tower filler 1 as viewed from the side to which the outside air B is supplied, that is, from the side surface direction, and shows a state in which a plurality of filler sheets 5 are stacked in the front-rear direction. FIG. 3 is a front view showing the filler sheet 5 constituting the cooling tower filler 1.

As shown in FIGS. 2 to 4, the cooling tower filler 1 of the present embodiment is configured by laminating a plurality of filler sheets 5 having a plurality of protrusions 15 and recesses 20.
In the cooling tower filler 1, spaces are formed between the plurality of protrusions 15 and the recesses 20 of each of the filler sheets 5 stacked in the front-rear direction, and raw water is formed by forming the spaces. A and outside air B can be supplied between the layers.

Since each filler sheet 5 has the same configuration, the configuration of one filler sheet 5 will be described. In this case, the filler sheet 5 viewed from the direction of FIG.
As shown in FIGS. 2 and 3, the filler sheet 5 is formed in a flat plate shape and has a rectangular shape (including a square) or a parallelogram (a sharp corner, usually 75 degrees or more and less than 90 degrees) when viewed from the front. ing.

  The filler sheet 5 is formed from a synthetic resin, and is formed from a single sheet by press molding using a mold or the like. Although the size is not particularly limited, the length and height of the bottom surface are each set to about 400 to 1000 mm, and the thickness (in this case, corresponding to the thickness in the front-rear direction) is usually 0. .About 2 to 0.7 mm. As a synthetic resin used for the sheet | seat 5 for fillers, hard polyvinyl chloride, a polypropylene, etc. can be mentioned, for example.

In the filler sheet 5, a corrugated undulating wave-shaped portion 8 undulating in the front-rear direction is formed in substantially the entire area in order to increase the surface area. In FIG. 3, only a part of the uneven wave shape portion 8 is shown.
The uneven wave shape portion 8 is formed such that the ridge line 8a and the valley line 8b are parallel to each other and meander in a zigzag manner in the vertical direction. The depth of the corrugated wave-shaped portion 8, that is, the depth between the top surface 81a of the ridge line 8a and the vertex 81b of the valley line 8b is not particularly limited, but is about 3 to 10 mm. The top surface 81a is formed in a vertical plane.

The protrusions 15 and the recesses 20 formed in the filler sheet 5 are arranged in an orderly manner so as to alternate with each other in the vertical direction and the horizontal direction. However, between the adjacent filler sheets 5, the protrusions 15 and the recesses 20 are formed at corresponding positions.
Note that the corrugated wave-shaped portion 8 is not formed in the region where the protrusion 15 and the recess 20 are disposed.

  Since each projection 15 has the same configuration, the configuration of one projection 15 will be described. 5 to 7 show details of the protrusion 15. As shown in these drawings, the protrusion 15 is formed so as to protrude from the rear surface, which is one surface side of the filler sheet 5, to the rear, which is one side in the stacking direction. The projecting portion 15 is extended to reach another filler sheet 5 adjacent to the rear of the filler sheet 5.

The protrusion 15 is formed in a truncated cone shape that is long in the left-right direction, which is the flow direction of the outside air, and flat in the up-down direction. Moreover, the cross section in the middle in the front-rear direction is formed in an elliptical shape.
The protrusion 15 is integrally formed from the body 16 and the tip 17.
The trunk portion 16 is formed such that the closer to the base side (the front side of the filler sheet 5), the wider the left and right width and the higher the vertical height, and the narrower the lateral width and the lower the vertical height in the rear direction. Has been.
The tip portion 17 is formed integrally with the rear portion of the body portion 16. The distal end portion 17 includes a distal end main body portion 18 and an insertion portion 19 formed integrally with the rear portion of the distal end main body portion 18. The distal end main body portion 18 is formed so that the left and right widths are gradually narrowed toward the rear and the vertical height is lowered. The insertion part 19 is formed so that the left and right widths are gradually narrowed toward the rear and the vertical height is lowered.
The inclination angles of the surfaces of the body portion 16 and the tip main body portion 18 are different. That is, the surface inclination angle of the body portion 16 is steeper than the surface inclination angle of the tip main body portion 18. With this configuration, the surface of the tip main body 18 and the surface of the body 16 are obtusely continuous.

  Two grooves 15 a spaced apart in the left-right direction are formed on the upper and lower surfaces of the protrusion 15. With this configuration, the cross-sectional area is increased, and the strength is increased accordingly. A plurality of protrusions 15 having the above-described configuration are formed on one filler sheet 5.

Since each recessed part 20 is the same structure, the structure of the one recessed part 20 is demonstrated. 8 to 11 (FIG. 11 is a photograph showing a perspective view of a part of an actual product), the details of the recess 20 are shown. As shown in these drawings, the concave portion 20 is formed so as to be recessed backward from the front surface which is the other side surface of the filler sheet 5. Therefore, a protruding portion corresponding to the shape of the recess 20 is formed on the rear surface of the filler sheet 5.
The inner space of the recess 20 is formed in a shape into which the tip 17 of the protrusion 15 can be inserted. That is, the recessed part 20 is formed in the truncated cone shape which is long in the left-right direction which is the flow direction of outside air, and flat in the up-down direction.

However, the inner surface left and right width L1 of the recess 20 is formed larger than the left and right width L2 of the tip portion 17 of the protrusion 15, and the inner surface height H1 of the recess 20 is equal to or higher than the height H2 of the tip portion 17. It is formed low and has an interference fit.
The front-rear depth D1 of the recess 20 is slightly larger than the front-rear length D2 of the distal end portion 17.

Reinforcing ribs 21 are formed at predetermined portions corresponding to the recesses 20 on the rear surface (corresponding to the protruding side surface) of the filler sheet 5. The reinforcing rib 21 is formed so as to extend in a direction intersecting in the left-right direction (longitudinal direction) on the projecting surface 22 projecting rearward by forming the recess 20. The reinforcing ribs 21 are respectively formed on the upper and lower portions of the protruding surface 22. The reinforcing rib 21 is formed in a substantially triangular shape when viewed from the side, and the front-rear height D3 from the rear surface is formed so as not to exceed the top surface 81a of the corrugated wave-shaped portion 8.
In this case, the front-rear height D3 of the reinforcing rib 21 is formed so as to coincide with the top surface 81a of the corrugated wave-shaped portion 8.

  Insertion holes 25 are formed so as to be dispersed in predetermined portions of each filler sheet 5. Each insertion hole 25 is formed at the same position in each filler sheet 5. In each insertion hole 25, a support column 26 is inserted for stabilizing the laminated state of the filler sheets 5. The positions of the respective insertion holes 25 are arranged at positions where the protrusions 15 and the recesses 20 of the filler sheets 5 adjacent to each other in the front-rear direction can be matched in the front-rear direction when the support column 26 is inserted therethrough. .

  When the filler sheets 5 are stacked in the front-rear direction, the necessary number of filler sheets 5 are stacked such that the insertion holes 25 formed in the filler sheet 5 are inserted into the plurality of support columns 26. To do. At this time, in the filler sheets 5 adjacent to each other in the front-rear direction (stacking direction), the protrusions 15 and the recesses 20 are formed at corresponding positions, so the protrusions 15 of the front filler sheet 5 are It can be fitted into the recess 20 of the rear filler sheet 5.

  Since the inner surface height H1 of the recess 20 is formed to be lower than the height H2 of the tip portion 17, when the protrusion 15 and the recess 20 are fitted, the recess 20 is opened slightly upward and downward. 15 is inserted. Moreover, since the front-end | tip part 17 is formed in the truncated cone shape, the projection part 15 can be easily inserted in the recessed part 20. FIG.

  The inclination angle of the surface of the trunk | drum 16 and the front-end | tip main body part 18 differs, and the surface of the front-end | tip main body part 18 and the surface of the trunk | drum 16 are obtusely continuous. For this reason, when the protrusion 15 is inserted into the recess 20, the continuous portion of the surface of the tip body 18 and the surface of the body 16 is locked to the periphery of the recess 20, and the front-rear depth D 1 of the recess 20 is Since the insertion portion 19 is formed so as to be slightly larger than the front-rear length D <b> 2 of 17, the protruding portion 15 is fastened at a position where the insertion portion 19 does not contact the bottom of the recess 20.

And the reinforcement rib 21 is formed in the predetermined site | part corresponding to the recessed part 20 among the rear surfaces of the sheet | seat 5 for fillers, The reinforcement rib 21 is the projection surface 22 which protruded back by forming the recessed part 20, It is formed so as to extend in a direction crossing in the left-right direction.
For this reason, the reinforcing rib 21 receives a force in the direction in which the recess 20 is opened, and conversely, the elastic restoring force acts on the protrusion 15 from the reinforcing rib 21, so that the protrusion 15 and the recess 20 are securely fitted. As a result, the protrusion 15 is less likely to escape from the recess 20.

  Since there are a plurality of protrusions 15 and recesses 20 in the filler sheet 5, the protrusions 15 and the recesses 20 are fitted in the filler sheet 5 stacked in the front-rear direction. By fitting the protrusions 15 and the recesses 20 at a plurality of locations, the holding state of the filler sheets 5 is ensured.

In the cooling tower packing 1 composed of such a plurality of packing sheets 5, the projections 15 in the packing sheet 5 are flat and long in the flow direction of the outside air B, so the outside air B collides. To the extent, the raw water A supplied from above often collides.
Furthermore, since the protrusion 15 has a truncated cone shape and there are no corners at both ends in the longitudinal direction, the pressure loss can be reduced as compared with a corner. Therefore, although the pressure loss is relatively small, the residence time of the raw water A can be increased, and the splash effect can be increased.

Since the corrugated wave-shaped portion 8 is formed on the surface of the filler sheet 5, the surface area of the raw water A flowing along the surface of the filler sheet 5 can be increased, and heat exchange with the outside air B can be performed efficiently. Can be made.
Moreover, since the corrugated wave-shaped part 8 is formed to meander when the ridge line 8a and the valley line 8b move from the upper side to the lower side, the uneven water wave portion 8 of the raw water A flowing along the valley line 8b from the upper side to the lower side is formed. The residence time can be lengthened, and the raw water A can be cooled to a lower temperature.

The front-rear height D3 of the reinforcing rib 21 is formed so as not to exceed the top surface 81a of the corrugated wave-shaped portion 8, and the front-rear height D3 of the reinforcing rib 21 is the top surface 81a of the corrugated-wave-shaped portion 8. It is formed to match. For this reason, a sufficient elastic restoring force can be ensured, the protrusion 15 can be reliably prevented from coming out of the recess 20, and the flow of the outside air B is greatly hindered by the provision of the reinforcing rib 21. Therefore, a decrease in the heat exchange rate between the raw water A and the outside air B can be suppressed.
Since the top of the corrugated wave shape portion 8 is a flat surface (top surface 81a), the resistance to the flow of the outside air B is reduced, the outside air B flows smoothly, and only the top portion is flat. The state of the flow of the raw water A is not changed along.

The shape of the reinforcing rib 21 is not limited to the above-described embodiment, and may be any shape as long as it does not greatly disturb the flow of the outside air B and can support the protrusion 15 on the spot with its elastic restoring force.
Further, the height D3 of the reinforcing rib 21 does not need to coincide with the top surface 81a as long as it does not exceed the top surface 81a and can support the protrusion 15 on the spot by its elastic restoring force.
In the present embodiment, the two grooves 15a are formed on the upper surface and the lower surface of the protrusion 15, but the present invention is not limited to this, and a single groove may be used. Moreover, it is good also as not only a groove | channel but the shape protruded in the reverse direction (mountain shape protruding to the surface side). In addition, since it is necessary to fit in the recessed part 20 when it is set as the mountain shape, the height H2 of the front-end | tip part 17 becomes a value including the height of the mountain-shaped formed in the front-end | tip part 17 in this case.

  DESCRIPTION OF SYMBOLS 1 ... Cooling tower packing material, 5 ... Packing material sheet, 15 ... Projection part, 16 ... Trunk part, 17 ... Tip part, 18 ... Tip body part, 19 ... Insertion part, 20 ... Recessed part, 21 ... Reinforcement rib, 25 ... Insertion hole, 50 ... Casing, 51 ... Outside air inlet, 52 ... Outside air outlet, 60 ... Cooling unit, 70 ... Raw water supply unit, 80 ... Cold water tank, 90 ... Ventilation space, 100 ... Blower, A ... Raw water, B ... Open air

Claims (4)

Cooling that consists of a plurality of sheets of packing material stacked in the cooling tower, where raw water is supplied from one side between the layers of the packing material sheet, and outside air is supplied from the other side so that the raw water is brought into contact with the outside air and cooled. A tower filler,
Each of the plurality of filler sheets has a plurality of protrusions and recesses, and the protrusions and the recesses are formed in a flat truncated cone shape that is long in the flow direction of the outside air, and the protrusions are laminated. It is extended so as to reach the adjacent filler sheet on one side in the direction, and the inter-layer spacing of the filler sheet is maintained by fitting the tip of the protrusion into the recess formed in the adjacent filler sheet. The cooling tower filling is characterized in that a reinforcing rib in a direction intersecting with the longitudinal direction is formed on a protruding side surface of the recessed portion in each packing material sheet at a middle portion in the longitudinal direction of each recessed portion. Wood.   2. The cooling tower packing material according to claim 1, wherein in the fitted state between the tip of the projection and the recess, the longitudinal direction of the tip and the recess is fitted by the elasticity of the reinforcing rib.   An uneven corrugated portion for increasing the surface area is formed on the entire surface of each filler sheet by contacting the raw water, and the height along the protruding side surface of the reinforcing rib is the height of the uneven corrugated portion. The cooling tower packing material according to claim 1 or 2, wherein the cooling tower packing material is formed so as not to exceed the thickness.   The sheet for fillers which comprises the filler for cooling towers in any one of Claims 1 thru | or 3.