JP3668454B2 - Cooling tower strainer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cooling tower for cooling the circulating water used in the HVAC such as factories and buildings, to a cooling tower provided with a cooling tower for strainer to remove chlorine and iron rust which are included in the circulating water .
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a cooling tower installed outdoors is used to cool circulating water used in air conditioning facilities such as factories and buildings. As a cooling tower, the outside air and circulating water are brought into direct contact with a heat exchange part such as a packing provided inside, and the heat of conduction by the temperature difference between the outside air and the circulating water or evaporation of the circulating water is released. There are an open-type cooling tower that cools the circulating water and a closed-type cooling tower that includes a heat exchanger and cools the circulating water by exchanging heat without directly contacting the air and the circulating water. Among these, as an open type cooling tower, generally, circulating water is supplied to an upper water tank provided at the upper part of the heat exchanging part, and heat such as a filler is supplied through a water spray hole provided at the bottom of the upper water tank. A cooling tower such as a cross flow type or a counter flow type is used that is uniformly dropped at a predetermined flow rate in the exchange unit and exchanges heat with the outside air in the heat exchange unit.
[0003]
[Problems to be solved by the invention]
However, the above conventional techniques have the following problems.
(1) Open-type cooling towers that are small or have a small amount of circulating water have low cooling capacity, so the temperature of the circulating water rises in summer and the like, and the circulating water that evaporates inside the cooling tower and in the upper water tank As the amount of water increases, the concentration of circulating water increases, the concentration of calcite in the circulating water increases, the calcite deposits, plugs the sprinkling holes in the upper tank, and reduces the cooling capacity. There is a problem that maintenance is expensive, and maintenance is expensive, and maintenance and cleaning work are complicated and labor saving.
(2) In addition, due to a decrease in cooling capacity, consumption of electric power, city gas, etc. increased to compensate for this, and there was a problem of lack of energy saving.
[0004]
[Contents of correction]
The present invention solves the above-mentioned conventional problems, and it can remove the chalk, iron rust, etc. contained in the circulating water by the strainer to prevent the cooling capacity from being lowered, is excellent in energy saving, and has management such as maintenance. The object is to provide a cooling tower that is easy and labor-saving.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the cooling tower of the present invention has the following configuration.
[0006]
The cooling tower according to claim 1 of the present invention includes a scattering prevention cover portion disposed above the circulating water outlet of the upper water tank, a synthetic resin such as vinyl chloride, PE, PP, stainless steel, iron, steel, etc. A net formed of a wire such as metal, and is formed of a bottomed cage body having an area equal to or larger than the area of the lower side of the scattering prevention cover portion, and circulates below the circulating water discharge port. And a cooling tower strainer provided around the water pipe .
[0007]
This configuration has the following effects.
(1) Impurities such as chalk, which are precipitated by circulating water being evaporated and concentrated inside the cooling tower, can be removed from the circulating water by a cooling tower strainer.
(2) When the cooling tower strainer is installed in the lower part of the circulating water discharge port of the upper tank, it is possible to remove chalk, iron rust, etc. from the circulating water before it is stored in the upper tank. It is possible to prevent precipitation at the sprinkling holes of the upper water tank or the like, and to block the sprinkling holes, and to prevent a decrease in cooling efficiency due to a decrease in the flow rate of the circulating water.
(3) If the cooling tower strainer is disposed in the lower portion of the circulating water discharge port of the upper water tank, since the cooling tower for the strainer is disposed upstream of the circulation pump for circulating the circulating water, before passing through the circulating pump In this way, it is possible to remove calcite, iron rust, etc. contained in the circulating water, and to reduce the burden and damage to the circulating pump due to the inclusion of impurities.
(4) By removing chalk and iron rust from the circulating water, it is possible to prevent corrosion of the cooling tower even when used for a long period of time, so the life of the cooling tower can be extended and the cooling tower Management is easy, and management costs and maintenance costs can be reduced.
(5) The cooling tower strainer can be easily cleaned by arranging the circulating water supply pipe around the lower part of the circulating water discharge port of the upper water tank at the upper part of the cooling tower. Since the pallet, iron rust, etc. accumulated in the cooling tower strainer can be easily removed by hand or the like, the maintainability can be improved.
(6) The cooling tower strainer is formed to be equal to or larger than the area of the lower part of the anti-scattering cover so as to cover the lower part of the anti-scattering cover provided on the upper part of the cooling tower strainer from below. As a result, when the circulating water discharged from the circulating water discharge part in the upper water tank comes into contact with the scattering prevention cover part and drops into the upper water tank, all the circulating water dropped passes through the basket body, It is possible to reliably remove calcite, iron rust, and the like contained in.
[0008]
Here, as the material of the wire, a synthetic resin such as vinyl chloride, PE, PP, and nylon, and a metal such as stainless steel, iron, and steel are used.
Further, the net body can be used by superposing a plurality of net bodies so as to form a predetermined mesh. Thereby, while being able to improve the intensity | strength of a net body, filtration capability can be improved.
In addition, it is preferable that the strainer for cooling towers is arrange | positioned at the lower part of the circulating water discharge port of the upper water tank of the upper part of a cooling tower by being attached to the circulating water water pipe. As a result, the cooling tower strainer can be easily cleaned, and the pallet, iron rust and the like accumulated in the cooling tower strainer can be easily removed by hand, so that the maintainability can be improved.
In addition, the cooling tower strainer is formed to be equal to or larger than the area of the lower part of the anti-scattering cover so as to cover the lower part of the anti-scattering cover provided on the upper part of the cooling tower strainer from below. It is preferable. As a result, when the circulating water discharged from the circulating water discharge part in the upper water tank comes into contact with the scattering prevention cover part and drops onto the upper water tank, all of the circulating water dropped passes through the cooling tower strainer. Included chalk and iron rust can be reliably removed.
[0009]
A cooling tower according to a second aspect of the present invention is the invention according to the first aspect, wherein a diameter of the linear object of the strainer for the cooling tower is 0.5 mm to 3.0 mm.
[0010]
With this configuration, in addition to the operation of the first aspect, the following operation is provided.
(1) Since the diameter of the filament is formed to be 0.5 mm to 3.0 mm, it has sufficient strength and improves the filtration ability that can remove chalk, iron rust, etc. from the circulating water. be able to.
(2) Since the diameter of the filament is 0.5 mm to 3.0 mm, the flow of circulating water that passes through the cooling tower strainer is not obstructed, and the amount of circulating water does not decrease. The amount of circulating water can be maintained.
[0011]
Here, the diameter of the filament is not preferable because the strength decreases as it becomes smaller than 0.5 mm, and the number of eyes decreases when the mesh body is formed with the same opening as it becomes larger than 3.0 mm. However, it is not preferable because the filtration capacity is lowered, and the resistance of circulating water passing therethrough increases and the amount of circulating water decreases.
[0012]
The cooling tower according to claim 3 is the invention according to claim 1 or 2, wherein the mesh body of the strainer for the cooling tower is formed of 4 to 16 mesh, preferably 6 to 12 mesh, and the cage body In the case of a round shape, the diameter is 300 to 800 mm, the height is 50 to 150 mm, and in the case of a box shape, W × D × H is (300 to 800 mm) × (300 to 800 mm) × (50 to 150 mm) ).
[0013]
With this configuration, in addition to the operation of the first or second aspect, the following operation is provided.
(1) Since the mesh of the mesh body is formed of 4 to 16 mesh, preferably 6 to 12 mesh, the filtration capacity can be improved and the decrease in the flow rate of circulating water passing due to clogging is suppressed. be able to.
(2) When the cage is round, the diameter is 300 to 800 mm and the height is 50 to 150 mm. When the cage is box, W × D × H is (300 to 800 mm) × (300 to 800 mm). ) × (50 to 150 mm), the filtration ability can be improved, and attachment and the like can be easily performed, so that the workability is excellent.
[0014]
Here, the mesh of the net is the number of filaments per inch of the net. The filtration capacity decreases as the mesh of the mesh body becomes smaller than 6 mesh, and it is not preferable because it becomes more noticeable at 4 mesh or less, and the resistance of circulating water increases as it becomes larger than 12 mesh. The flow rate decreases, and if it is 16 mesh or more, it becomes more remarkable, which is not preferable. In any case, it is preferable that the interval between adjacent filaments is formed to be about 0.1 mm to 4.0 mm in order to remove the chalk and the like which precipitate and grow to a size of about 4 mm.
In addition, in the case of the round shape of the cage body , as the diameter becomes smaller than 300 mm or as the height becomes smaller than 50 mm, the mesh body is clogged by decreasing the area of the mesh portion of the mesh body. It is not preferable because the flow rate of the circulating water passing through decreases and the cooling capacity decreases, and it is difficult to install as the diameter becomes larger than 800 mm or the height becomes larger than 150 mm. Is not preferable. In addition, when the cage body is a box shape, it is preferable because the flow rate of circulating water decreases due to clogging of the net body and the cooling capacity decreases as W × D × H becomes smaller than 300 × 300 × 50 mm. However, as the size becomes larger than 800 × 800 × 150 mm, it is not possible to easily perform the attachment, so that the workability is lowered, which is not preferable. The height of the mesh body is preferably 50 to 150 mm, but the level of the circulating water stored in the upper water tank is generally about 100 to 120 mm, so the height of the mesh body is It is preferable that the upper end portion of the net body is formed higher than this water level.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
(Embodiment 1)
FIG. 1 is an overall perspective view showing the cooling tower in the first embodiment, FIG. 2 is a partially transparent main part enlarged view of the cooling tower in the first embodiment, and FIG. It is arrow sectional drawing.
In the figure, 2 is a cooling tower in the present embodiment 1 in which a cooling tower strainer 1 is provided, 3 is an air suction port formed in a side portion of the cooling tower 2, 3 a is a fin disposed in the air suction port 3, 4 is an air discharge port disposed at the top of the cooling tower 2, 5 is a fan disposed at the air discharge port 4, 6 is an upper water tank disposed on both sides of the air discharge port 4 at the top of the cooling tower 2, 7 Is a sprinkling hole formed at the bottom of the upper water tank 6, 8 is a circulating water water pipe arranged through the bottom of the upper water tank 6 and the cooling tower strainer 1 from the lower side, and 9 is a circulating water water pipe 8. A circulating water discharge port 10 formed at the upper end portion is a cover portion for scattering prevention which is disposed on the upper part of the cooling tower strainer 1 and is covered by the circulating water discharge port 9.
[0016]
The cooling tower strainer 1 is formed of a 6 to 12 mesh net, and W × D × H is (300 to 800 mm) × (300 to 800 mm) × (50 to 150 mm) with a bottomed cage body. Is formed. In the cooling tower 2 in which the circulating water supply pipe 8 is piped through the bottom of the upper water tank 6 as in the first embodiment, the circulating water supply pipe 8 is connected to the bottom of the strainer 1 for cooling tower. It is preferable that a hole for mounting is formed. However, the present invention is not limited to this. For example, the circulating water supply pipe 8 has its tip, that is, the circulating water discharge port 9 disposed downward in the upper part of the upper water tank 6. In the case where the pipes are arranged as described above, it is preferable that the holes are not formed at the bottom of the cooling tower strainer 1 but are disposed below the circulating water discharge port 9 disposed downward. Thus, since the circulating water discharged from the circulating water discharge port 9 passes through the cooling tower strainer 1 before being stored in the upper water tank 6 , impurities such as chalk and iron rust can be reliably removed from the circulating water. it can. The height of the mesh body is preferably 50 to 150 mm, but is preferably formed so that the upper end of the mesh body is higher than the water level of the circulating water stored in the upper water tank 6. As a result, all the circulating water discharged from the circulating water discharge port 9 passes through the cooling tower strainer 1 and is stored in the upper water tank 6, so that it is possible to reliably remove calcite, iron rust, and the like in the circulating water.
Moreover, the strainer 1 for cooling towers is arrange | positioned so that it may have the predetermined space | interval d with the cover part 10 for scattering prevention arrange | positioned at the upper part of the circulating water discharge port 9, as shown in FIG.2 and FIG.3. By providing the interval d, the circulating water discharged from the circulating water discharge port 9 hits the inner upper surface of the scattering prevention cover portion 10 and becomes longer in contact with the outside air while falling into the upper water tank 6. Thus, the temperature of the circulating water can be lowered. The interval d is preferably set so that the scattering prevention cover 10 is about 300 mm higher than usual.
Further, the scattering prevention cover portion 10 is supported by a support member such as a leg (not shown) and is fixed to the upper part of the circulating water discharge port 9.
[0017]
The operation of the cooling tower configured as described above will be described below with reference to the drawings.
Circulating water that has passed through a condenser such as an air conditioner (not shown) installed in a factory or building is introduced into the cooling tower 2 and is sent to the upper water tank 6 through the circulating water feed pipe 8. The The circulating water discharged from the circulating water discharge port 9 through the circulating water supply pipe 8 is stored in the upper water tank without being scattered around by the scattering prevention cover portion 10. Here, the solids such as the calcite in the circulating water are collected by the cooling tower strainer 1. A heat exchanging part such as a filling (not shown) is disposed in the lower part of the upper water tank 6 inside the cooling tower 2, and the circulating water stored in the upper water tank 6 is formed by sprinkling holes 7 formed in the lower part of the upper water tank 6. Then, it is dripped uniformly into the heat exchange part such as a filler. The circulating water dropped on the heat exchange part flows downward through the heat exchange part. Here, the circulating water is cooled by exchanging heat with the outside air introduced into the cooling tower 2 from the air suction port 3 by driving of the fan 5 disposed in the air discharge port 4. The circulating water that has passed through the heat exchange section and has been cooled is sent from the lower part of the cooling tower 2 and supplied to the condenser of the air conditioner as cooling water. In this way, the condensed water such as calcite contained therein is removed from the circulating water circulating between the cooling tower 2 and the condenser of the air conditioner by the cooling tower strainer.
[0018]
As described above, since the cooling tower according to the first embodiment is configured, the chlorinated water and the like that are precipitated when the circulating water is concentrated by the evaporation action of the cooling tower 2 are removed from the circulating water by the cooling tower strainer 1. It is possible to prevent clogging, iron rust, and the like from blocking the water spray holes 7 and the like of the upper water tank 6, and to prevent a decrease in cooling efficiency due to circulating water.
[0019]
【The invention's effect】
As described above, according to the cooling tower of the present invention, the following advantageous effects can be obtained.
.
[0020]
As described above, from the results of Example 1, the cooling tower strainer is a mesh body having a diameter of 0.5 to 3.0 mm and a mesh of 6 to 12 mesh, and W × D × H is (300 to 800 mm). × (300 ~ 800mm) × (50 ~ 150mm) by forming the bottomed cage shape, the chill and iron rust contained in the circulating water are removed when passing through the net, so the cooling capacity of the cooling tower Can be improved. In addition, impurities such as chalk and iron rust accumulated in the cooling tower strainer can be easily removed by hand, and cleaning and maintenance are easy. It should be noted that since a large amount of calcite, etc., precipitated in the circulating water is deposited in the pipe connecting the condenser or cooling tower and the condenser, the strainer for the cooling tower is preferably disposed in the upper water tank 6, thereby It is possible to prevent iron rust and the like from blocking the water spray holes of the upper water tank, and to prevent a decrease in cooling efficiency due to circulating water.
[0021]
【The invention's effect】
As described above, according to the cooling tower strainer of the present invention, the following advantageous effects can be obtained.
[0022]
According to the invention of claim 1,
(1) It is possible to provide a cooling tower that can remove impurities such as chalk, which are precipitated by circulating water being evaporated and concentrated inside the cooling tower, from the circulating water by a cooling tower strainer.
(2) When the cooling tower strainer is installed in the lower part of the circulating water discharge port of the upper tank, it is possible to remove chalk, iron rust, etc. from the circulating water before it is stored in the upper tank. To provide a cooling tower excellent in energy saving that can prevent precipitation in the upper water tank, prevent the water from being blocked, and prevent the cooling efficiency from being lowered due to a decrease in the flow rate of circulating water. Can do.
(3) If the cooling tower strainer is disposed in the lower portion of the circulating water discharge port of the upper water tank, since the cooling tower for the strainer is disposed upstream of the circulation pump for circulating the circulating water, before passing through the circulating pump In addition, it is possible to provide a cooling tower that can remove calcite, iron rust, and the like contained in the circulating water, and reduce the burden and damage on the circulating pump due to the inclusion of impurities.
(4) By removing chalk and iron rust from the circulating water, it is possible to prevent corrosion of the cooling tower even when used for a long period of time, so the life of the cooling tower can be extended and the cooling tower It is possible to provide a cooling tower that is easy to manage and has excellent labor savings that can reduce management costs and maintenance costs.
(5) The cooling tower strainer can be easily cleaned by being disposed around the circulating water outlet at the lower part of the circulating water discharge port of the upper water tank at the upper part of the cooling tower. In addition, it is possible to easily remove the chalk, iron rust, and the like accumulated in the basket body by hand, so that the maintainability can be improved.
(6) The cooling tower strainer is formed to be equal to or larger than the area of the lower part of the anti-scattering cover so as to cover the lower part of the anti-scattering cover provided on the upper part of the cooling tower strainer from below. Therefore, when the circulating water discharged from the circulating water discharge part in the upper water tank comes into contact with the scattering prevention cover part and drops into the upper water tank, all the circulating water dropped passes through the cooling tower strainer. Chalk and iron rust contained in water can be reliably removed.
[0023]
According to invention of Claim 2, in addition to the effect of Claim 1,
(1) Since the diameter of the filament of the cooling tower strainer is 0.5 mm to 3.0 mm, the filtration has sufficient strength and can remove chalk and iron rust from the circulating water. A cooling tower capable of improving the capability can be provided.
(2) Since the diameter of the filament is 0.5 mm to 3.0 mm, the flow of circulating water that passes through the cooling tower strainer is not obstructed, and the amount of circulating water does not decrease. It is possible to provide a cooling tower capable of maintaining the amount of circulating water.
[0024]
According to invention of Claim 3, in addition to the effect of Claim 1 or 2,
(1) Since the mesh of the cooling tower strainer is formed of 4 to 16 mesh, preferably 6 to 12 mesh, the filtration capacity can be improved and the flow rate of circulating water passing through clogging can be improved. A cooling tower that can suppress the decrease can be provided.
(2) When the cage is round, the diameter is 300 to 800 mm and the height is 50 to 150 mm. When the cage is box, W × D × H is (300 to 800 mm) × (300 to 800 mm). ) × (50 to 150 mm), it is possible to improve the filtration capacity and easily remove and attach / remove, so that a cooling tower with excellent maintainability can be provided. .
[Brief description of the drawings]
FIG. 1 is an overall perspective view showing a cooling tower according to the first embodiment. FIG. 2 is a partially transparent main part enlarged view of the cooling tower according to the first embodiment. FIG. 3 is a cross-sectional view taken along line AA in FIG. Figure [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Strainer for cooling tower 2 Cooling tower 3 Air inlet 3a Fin 4 Air outlet 5 Fan 6 Upper water tank 7 Sprinkling hole 8 Circulating water water supply pipe 9 Circulating water outlet 10 Cover part for scattering prevention

Claims (3)

Splash prevention cover provided at the upper part of the circulating water outlet of the upper water tank, and a net formed of a synthetic resin such as vinyl chloride, PE, PP, or a wire such as a metal such as stainless steel, iron, steel, etc. A cooling tower which is formed of a bottomed cage body having an area equal to or larger than the area of the lower part of the scattering prevention cover portion, and is provided around the circulating water discharge pipe and provided around the circulating water discharge port. And a strainer for cooling . Diameter of the filament of the cooling tower for strainer, cooling tower according to claim 1, characterized in that a 0.5 mm to 3.0 mm. When the mesh body of the cooling tower strainer is formed of 4 to 16 mesh, preferably 6 to 12 mesh, and the size of the cage body of the cooling tower strainer is round, the diameter is 300 to 800 mm. The height is 50 to 150 mm, and in the case of a box shape, W × D × H is (300 to 800 mm) × (300 to 800 mm) × (50 to 150 mm). Cooling tower .

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