JPH0712497A - Controlling method for water quality of circulating cooling water of cooling tower - Google Patents
Controlling method for water quality of circulating cooling water of cooling towerInfo
- Publication number
- JPH0712497A JPH0712497A JP1195691A JP1195691A JPH0712497A JP H0712497 A JPH0712497 A JP H0712497A JP 1195691 A JP1195691 A JP 1195691A JP 1195691 A JP1195691 A JP 1195691A JP H0712497 A JPH0712497 A JP H0712497A
- Authority
- JP
- Japan
- Prior art keywords
- water
- treatment agent
- blow
- cooling tower
- water treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 99
- 239000000498 cooling water Substances 0.000 title claims abstract description 53
- 238000001816 cooling Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 58
- 238000002347 injection Methods 0.000 claims description 26
- 239000007924 injection Substances 0.000 claims description 26
- 238000003908 quality control method Methods 0.000 claims description 6
- 238000007664 blowing Methods 0.000 description 12
- 239000000126 substance Substances 0.000 description 7
- 239000002455 scale inhibitor Substances 0.000 description 5
- 239000003814 drug Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000857 drug effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ブロー装置及び水処理
剤注入装置を備えた冷却塔における循環冷却水の水質管
理方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water quality control method for circulating cooling water in a cooling tower equipped with a blowing device and a water treatment agent injection device.
【０００２】[0002]
【従来の技術】冷却塔は一般に知られているように冷却
水を空気と直接接触させて水を蒸発させ、その潜熱によ
り水を冷却するもので、冷却水と空気とを直接接触させ
ているので、単に空気の温度を高くして熱を運ぶ空冷熱
交換器より伝熱効率がよく、小型でしかも低価格にでき
るなどの特徴をもち、従って従来大型から小型のものま
で種々の冷却塔が提案され、冷凍、空調用として実用に
供されている。ところで冷却塔の管理上において生じる
問題としては循環冷却水系に発生する腐蝕障害、スケー
ル障害及びスライム障害等があり、特に開放式循環冷却
水系では、循環冷却水の一部が冷却塔で蒸発するため、
循環冷却水中の溶存塩類は循環冷却水中で濃縮されるこ
とになる。また循環冷却水中にイオンの形態で存在する
カルシウム、シリカ等はスケール生成のもととなってい
る。これらの障害は熱交換効率を低下させるだけでなく
冷凍機や配管等を損傷させることになる。このような障
害を防止するため、循環水中に含まれる塩分やその他の
不純物の含有量を一定の値以下に保つための循環水の一
部を循環冷却水系外へ排出するブローダウン及び防食
剤、スケール防止剤等の薬剤注入が行われている。ブロ
ーダウンによる循環冷却水系の濃縮管理及び薬剤注入管
理は通常循環水の電導率を測定し、それに基づき循環水
の濃度倍率を算出し、ブロー水量を自動制御する方式が
採られている。一方防食剤やスケール防止剤等の水処理
剤は循環水中に適度な濃度を常時保持する必要があり、
この保持投入に必要な水処理剤の量は、設定した薬剤の
保持濃度に基づきブロー量、飛散損失量または補給水量
等に応じて決められ、薬剤注入装置により設定した量の
水処理剤を補給注入するようにしている。2. Description of the Related Art As is generally known, a cooling tower cools water by directly contacting cooling water with air to evaporate the water and cool the water by its latent heat. The cooling water and the air are in direct contact with each other. Therefore, it has features such as higher heat transfer efficiency than an air-cooled heat exchanger that simply heats the air to transfer heat, can be made compact and at low cost, and therefore various cooling towers from large to small have been proposed. It is used for freezing and air conditioning. By the way, problems that occur in the management of the cooling tower include corrosion damage, scale damage and slime damage that occur in the circulating cooling water system.In particular, in the open type circulating cooling water system, part of the circulating cooling water evaporates in the cooling tower. ,
The dissolved salts in the circulating cooling water will be concentrated in the circulating cooling water. In addition, calcium, silica, etc. existing in the form of ions in the circulating cooling water are a source of scale formation. These obstacles not only reduce the heat exchange efficiency, but also damage the refrigerator, piping, and the like. To prevent such obstacles, a blowdown and an anticorrosive agent that discharges part of the circulating water to keep the content of salt and other impurities contained in the circulating water below a certain value, to the outside of the circulating cooling water system, Drugs such as scale inhibitors are injected. Concentration control and chemical injection control of the circulating cooling water system by blowdown usually employ a method of measuring the electric conductivity of circulating water, calculating the concentration ratio of circulating water based on it, and automatically controlling the amount of blown water. On the other hand, water treatment agents such as anticorrosion agents and scale inhibitors must always maintain an appropriate concentration in circulating water.
The amount of water treatment agent required for this holding and input is determined according to the amount of blown agent, the amount of scattering loss, the amount of makeup water, etc. based on the set retention concentration of the agent, and the amount of water treatment agent set by the agent injection device is replenished. I try to inject it.
【０００３】[0003]
【発明が解決しようとする課題】ところで、水質管理、
特に防食剤、スケール防止剤等の薬剤注入は、冷却塔内
の水槽中の循環冷却水の導電率を定期的に測定し、その
測定データに基づいて投入量を決められるが、蒸散等に
よる循環冷却水の消失が装置の稼動状態や季節等により
異なることを考慮して通常は薬剤が効果を発揮する下限
濃度以上に維持するためと管理上の観点から通常使用濃
度より相当高い濃度となるように定期的に（例えば年数
回）補給注入が行われている。そのため、循環冷却水中
の水処理剤の濃度は薬剤が効果を発揮する下限濃度より
はるかに高くなっており、水処理剤が実際に必要される
量以上に使用されていることになる。このことは、比較
的高価な水処理剤の浪費と共に、ランニングコストを高
騰させる要因となっている。また、防食剤やスケール防
止剤等の水処理剤の循環水中の濃度はブロー量、飛散損
失量または補給水量等を含めた循環水量に関係するにも
かかわらず、従来、ブロー量と薬剤注入量とを直接関連
させて管理することは行われてなかった。By the way, water quality management,
In particular, when injecting chemicals such as anticorrosion agents and scale inhibitors, the conductivity of the circulating cooling water in the water tank in the cooling tower is regularly measured, and the input amount can be determined based on the measured data. Considering that the disappearance of cooling water varies depending on the operating condition of the equipment, the season, etc. Supplementary infusions are performed on a regular basis (for example, several times a year). Therefore, the concentration of the water treatment agent in the circulating cooling water is much higher than the lower limit concentration at which the agent exerts its effect, and it means that the water treatment agent is used in an amount more than actually required. This causes the running cost to rise as well as the waste of the relatively expensive water treatment agent. In addition, the concentration of water treatment agents such as anticorrosion agents and scale inhibitors in circulating water is related to the amount of circulating water including blow amount, scattering loss amount, makeup water amount, etc. There was no direct management of and.
【０００４】そこで、本発明は、上記のような問題点を
解決するため冷却塔において従来別個に行われていた自
動ブロー操作と薬剤注入操作とを一連の管理操作として
実施できるようにした冷却塔における循環冷却水の水質
管理方法を提供することを目的としている。Therefore, in order to solve the above-mentioned problems, the present invention makes it possible to perform the automatic blowing operation and the chemical injection operation, which are conventionally performed separately in the cooling tower, as a series of management operations. The purpose is to provide a water quality control method for circulating cooling water in.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明による、ブロー装置及び水処理剤注入装置
を備えた冷却塔における循環冷却水の水質管理方法は、
ブロー装置の作動によるブローダウン量を計測し、この
計測したブローダウン量に応じて水を補給すると共に水
処理剤注入装置を作動させ水処理剤を冷却塔における循
環冷却水中に注入して循環冷却水中の水処理剤の濃度を
所望のレベルに維持することを特徴としている。ブロー
装置によるブローダウン量は、好ましくはブロー装置の
作動時間を計測することによって測定され、この計測し
たブロー装置の作動時間に比例して水処理剤注入装置に
よる水処理剤の注入量が設定され得る。本発明による方
法を実施するために、好ましくは、冷却塔に設けられる
ブロー装置は、一端を冷却塔内の循環冷却水中に位置決
めし他端を冷却塔外へ連通させて冷却塔内の循環冷却水
を冷却塔外へブローダウンさせる逆Ｕ字形のサイホンパ
イプと、このサイホンパイプの一端に取付けられサイホ
ンパイプ内へ冷却塔内の循環冷却水を供給してサイホン
現象を生じさせる水供給手段と、サイホンパイプの屈曲
した頂上部内に空気を供給してサイホン現象を止める空
気供給手段と、上記水供給手段及び空気供給手段の動作
を制御する制御手段とから成り、制御手段による上記水
供給手段の作動開始時点から空気供給手段の作動開始時
点までのサイホン現象継続時間に比例して水処理剤注入
装置は作動され得る。In order to achieve the above object, a method for controlling the quality of circulating cooling water in a cooling tower equipped with a blowing device and a water treatment agent injection device according to the present invention comprises:
Measures the blowdown amount due to the operation of the blow device, supplies water according to the measured blowdown amount, and activates the water treatment agent injection device to inject the water treatment agent into the circulating cooling water in the cooling tower for circulation cooling. It is characterized by maintaining the concentration of water treatment agent in water at a desired level. The blowdown amount by the blower is preferably measured by measuring the operation time of the blower, and the injection amount of the water treatment agent by the water treatment agent injection device is set in proportion to the measured operation time of the blower. obtain. In order to carry out the method according to the present invention, preferably, the blowing device provided in the cooling tower has one end positioned in the circulating cooling water in the cooling tower and the other end communicating with the outside of the cooling tower for circulating cooling in the cooling tower. An inverted U-shaped siphon pipe for blowing down water to the outside of the cooling tower, and water supply means attached to one end of the siphon pipe for supplying circulating cooling water in the cooling tower into the siphon pipe to cause a siphon phenomenon, The air supply means for supplying air into the bent top of the siphon pipe to stop the siphon phenomenon, and the control means for controlling the operations of the water supply means and the air supply means, and the operation of the water supply means by the control means The water treatment agent injection device can be operated in proportion to the siphon phenomenon duration time from the start time to the start time of operation of the air supply means.
【０００６】[0006]
【作用】本発明による方法においては、ブロー装置の作
動によるブローダウン量を計測し、この計測したブロー
ダウン量に応じて水処理剤を冷却塔における循環冷却水
中に注入するようにしているので、ブローダウン操作と
水処理剤の注入操作とを一連の水管理操作として実施す
ることができ、しかも計測したブロー装置の作動時間に
比例して水処理剤注入装置による水処理剤の注入量を設
定できるので、従来のように余分に注入する必要がな
く、経時的にも水処理剤の濃度を常にほぼ一定に保持す
ることができる。また本発明の方法を実施することによ
り従来別個に構成、操作されていた自動ブロー装置及び
薬剤注入装置を比較的容易に且つ簡単に連動させること
が可能となり、冷却塔における循環冷却水の管理を簡素
化することができる。In the method according to the present invention, the blowdown amount due to the operation of the blowing device is measured, and the water treatment agent is injected into the circulating cooling water in the cooling tower according to the measured blowdown amount. The blowdown operation and the water treatment agent injection operation can be performed as a series of water management operations, and the water treatment agent injection amount by the water treatment agent injection device is set in proportion to the measured blow device operation time. As a result, it is not necessary to inject extra water as in the conventional case, and the concentration of the water treatment agent can be kept substantially constant over time. Further, by carrying out the method of the present invention, it is possible to relatively easily and easily interlock the automatic blowing device and the chemical injection device, which have been separately configured and operated conventionally, and control the circulating cooling water in the cooling tower. It can be simplified.
【０００７】[0007]
【実施例】以下添付図面を参照して本発明の実施例につ
いて説明する。図１には、本発明の方法を実施している
冷却塔及び水管理装置の一例を示し、１は冷却塔で、こ
の冷却塔１には冷却水の循環管路２、３及び水補給管４
が連接されている。また冷却塔１の下部水槽内にはオー
バーフロー管５が配設され、このオーバーフロー管５の
上端を跨いでブロー装置を構成している逆Ｕ字形のサイ
ホンパイプ６が取付けられ、サイホンパイプ６の一端に
は下部水槽内の冷却水をサイホンパイプ６へ送り込んで
サイホン現象を生じさせるポンプから成る水供給手段７
が取付けられ、またサイホンパイプ６の他端はオーバー
フロー管５内へ伸びている。サイホンパイプ６の屈曲し
た頂上部には空気を供給してサイホン現象を止める空気
供給管８が連通しており、この空気供給管８は適当な形
式の開閉弁９が取付けられている。水供給手段７及び空
気供給管８における開閉弁９は動作制御装置10に接続さ
れ、サイホンパイプ６によるブロー操作を制御するよう
に構成されている。また、図１において11は冷却水の導
電率を検出する検出器で、この検出器11で検出された導
電率を表す信号は動作制御装置10に供給される。12は防
食剤やスケール防止剤等の水処理剤を冷却水中に導入す
る水処理剤注入装置であり、動作制御装置10によって動
作制御される。また13はブロー装置における水供給手段
７及び空気供給管８の開閉弁９の動作に応動して水供給
手段７の作動開始時点から開閉弁９の開放時点までのサ
イホン現象継続時間すなわちブロー時間を計測するタイ
マー装置であり、このタイマー装置13で計測したブロー
時間信号は動作制御装置10に送られ、計測したブロー時
間に比例して水処理剤注入装置12の動作を制御するのに
用いられる。さらに、図示してないが、ブロー装置を構
成している各要素、水処理剤注入装置、タイマー装置及
び動作制御装置の電源としては同一の電源、例えば太陽
電池を用いることができ、駆動電源として太陽電池を利
用した場合には既存の冷却塔に対して特別な電気的配線
工事をする必要なしに本発明の方法を実施することがで
きる。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an example of a cooling tower and a water management apparatus for carrying out the method of the present invention. Reference numeral 1 is a cooling tower, and in this cooling tower 1, cooling water circulation pipe lines 2 and 3 and a water supply pipe are provided. Four
Are connected. Further, an overflow pipe 5 is arranged in the lower water tank of the cooling tower 1, and an inverted U-shaped siphon pipe 6 which constitutes a blower is installed across the upper end of the overflow pipe 5, and one end of the siphon pipe 6 is attached. Is a water supply means 7 including a pump for sending the cooling water in the lower water tank to the siphon pipe 6 to cause the siphon phenomenon.
Is attached, and the other end of the siphon pipe 6 extends into the overflow pipe 5. An air supply pipe 8 for supplying air to stop the siphon phenomenon communicates with the bent top of the siphon pipe 6, and an opening / closing valve 9 of an appropriate type is attached to the air supply pipe 8. The on-off valve 9 in the water supply means 7 and the air supply pipe 8 is connected to the operation control device 10 and is configured to control the blow operation by the siphon pipe 6. Further, in FIG. 1, 11 is a detector for detecting the conductivity of the cooling water, and a signal representing the conductivity detected by the detector 11 is supplied to the operation control device 10. Reference numeral 12 is a water treatment agent injection device for introducing a water treatment agent such as an anticorrosive agent or a scale inhibitor into the cooling water, and its operation is controlled by the operation control device 10. Further, 13 is the duration of the siphon phenomenon from the start of the operation of the water supply means 7 to the opening of the open / close valve 9, that is, the blow time, in response to the operation of the water supply means 7 and the opening / closing valve 9 of the air supply pipe 8 in the blower. This is a timer device for measuring, and the blow time signal measured by the timer device 13 is sent to the operation control device 10 and used to control the operation of the water treatment agent injection device 12 in proportion to the measured blow time. Further, although not shown, the same power source, for example, a solar cell can be used as the power source of each element constituting the blower device, the water treatment agent injecting device, the timer device and the operation control device, and as a drive power source. When the solar cell is used, the method of the present invention can be carried out without the need for special electrical wiring work for the existing cooling tower.
【０００８】このように構成した装置を用いて実際に冷
却水を管理する操作について説明すると、検出器11で検
出された冷却水の導電率に基づき予め設定されたブロー
必要量に応じて動作制御装置10からブロー装置の水供給
手段７へブロー開始制御信号が送られ、これにより水供
給手段７は作動され、下部水槽内の冷却水をサイホンパ
イプ６へ送り込んでサイホン現象を生じさせる。この場
合サイホンパイプ６内にサイホン現象が生じるや否や水
供給手段７は停止するようにされている。こうしてサイ
ホンパイプ６を介して冷却水のブローが開始され、ブロ
ーが予定量に達すると動作制御装置10からブロー終了制
御信号により空気供給管８の開閉弁９が開放され、それ
により空気供給管８を介してサイホンパイプ６内に空気
が供給され、サイホン現象を停止させ、ブロー操作は終
了する。この間タイマー装置13は実際のブロー時間を計
測し、そのブロー時間は動作制御装置10に送られる。動
作制御装置10では実際に計測したブロー時間に応じて水
処理剤注入装置12へ水処理剤注入命令信号を供給し、水
処理剤注入装置12を作動させて実際に計測したブロー時
間に比例した量の水処理剤を冷却水中に注入させる。こ
の場合、継続投入量は、冷却水配管循環冷却水中の濃度
が薬剤効果を発揮する下限濃度以上、例えば200PPMとな
るように設定され得る。また、当然ブロー量に相応して
水補給管４を介して必要量の補給水が供給される。The operation of actually managing the cooling water by using the device configured as described above will be described. The operation control is performed based on the conductivity of the cooling water detected by the detector 11 according to a preset required blow amount. A blow start control signal is sent from the device 10 to the water supply means 7 of the blower device, whereby the water supply means 7 is activated and the cooling water in the lower water tank is sent to the siphon pipe 6 to cause the siphon phenomenon. In this case, the water supply means 7 is stopped as soon as the siphon phenomenon occurs in the siphon pipe 6. In this way, the blow of the cooling water is started via the siphon pipe 6, and when the blow reaches the predetermined amount, the opening / closing valve 9 of the air supply pipe 8 is opened by the blow end control signal from the operation control device 10, whereby the air supply pipe 8 is opened. Air is supplied to the inside of the siphon pipe 6 via the, and the siphon phenomenon is stopped, and the blow operation ends. During this time, the timer device 13 measures the actual blow time, and the blow time is sent to the operation control device 10. In the operation control device 10, the water treatment agent injection command signal is supplied to the water treatment agent injection device 12 according to the actually measured blow time, and the water treatment agent injection device 12 is operated to be proportional to the actually measured blow time. A quantity of water treatment agent is injected into the cooling water. In this case, the continuous injection amount can be set so that the concentration in the cooling water circulating circulation water is equal to or higher than the lower limit concentration for exerting the drug effect, for example, 200 PPM. Naturally, the required amount of makeup water is supplied through the water supplement pipe 4 in accordance with the blow amount.
【０００９】ところで、上記実施例では実際のブロー時
間に比例して水処理剤注入を設定するようにしている
が、代わりに冷却水の実際のブロー流量を例えば積算流
量計で測定し、測定したブロー流量に比例して水処理剤
注入装置12の動作を制御し、必要量の水処理剤を注入す
るように動作制御することもできる。また、図示実施例
では水処理剤注入は下部水槽内へ行なうように示されて
いるが、当然冷却水の循環管路へ注入することができ
る。By the way, in the above embodiment, the water treatment agent injection is set in proportion to the actual blow time, but instead, the actual blow flow rate of the cooling water is measured by, for example, an integrating flow meter. It is also possible to control the operation of the water treatment agent injection device 12 in proportion to the flow rate of the blow and to control the operation so as to inject a necessary amount of water treatment agent. Further, in the illustrated embodiment, the water treatment agent is shown to be injected into the lower water tank, but it is naturally possible to inject the cooling water into the circulation pipe line.
【００１０】[0010]
【発明の効果】以上説明してきたように、本発明によれ
ば、ブロー装置の作動によるブローダウン量を計測し、
この計測したブローダウン量に応じて水処理剤を冷却塔
における循環冷却水中に注入するようにしているので、
ブロー操作後ブロー量に比例して薬剤注入でき、その結
果冷却水中の薬剤濃度を一定にすることができ、従って
従来のブロー操作と薬剤注入操作とを別個に行なう場合
に比較して運転負荷が少ない時でも一定量の薬剤濃度と
なり、負荷が増大すればそれに連れてブロー量が増大す
るが、その場合でも水処理剤の無駄をなくすことがで
き、それにより年間を通じての水処理剤の総体使用量を
大幅に削減することができ、装置のランニングコストの
大幅な低減が期待できる。また従来のようにブロー操作
と薬剤注入操作とを別個に行なわないので、自動ブロー
及び薬剤注入装置を用いた場合でも水管理を大幅に簡素
化することができる。As described above, according to the present invention, the blowdown amount by the operation of the blower is measured,
Since the water treatment agent is injected into the circulating cooling water in the cooling tower according to the measured blowdown amount,
After the blowing operation, the chemical can be injected in proportion to the blowing amount, and as a result, the chemical concentration in the cooling water can be kept constant, so that the operation load is lower than when the conventional blowing operation and chemical injection operation are performed separately. Even when the amount is low, the concentration of the agent becomes a certain amount, and the blow rate increases with the increase of the load, but even in that case, the waste of the water treatment agent can be eliminated, so that the total use of the water treatment agent throughout the year is possible. The amount can be significantly reduced, and the running cost of the device can be expected to be significantly reduced. Further, unlike the conventional case, the blowing operation and the medicine injecting operation are not separately performed, so that water management can be greatly simplified even when the automatic blowing and the medicine injecting apparatus are used.
【００１１】[0011]
【図面の簡単な説明】[Brief description of drawings]
【図１】 本発明による冷却塔における循環冷却水の水
質管理方法を実施している冷却塔の一例を示す概略線図
である。FIG. 1 is a schematic diagram showing an example of a cooling tower implementing a water quality control method for circulating cooling water in a cooling tower according to the present invention.
１：冷却塔 ２：冷却水の循環管路 ３：冷却水の循環管路 ４：水補給管 ５：オーバーフロー管 ６：逆Ｕ字形のサイホンパイプ ７：水供給手段 ８：空気供給管 ９：開閉弁 10：動作制御装置 11：冷却水の導電率の検出器 12：水処理剤注入装置 13：タイマー装置 1: Cooling tower 2: Cooling water circulation pipe 3: Cooling water circulation pipe 4: Water supply pipe 5: Overflow pipe 6: Reverse U-shaped siphon pipe 7: Water supply means 8: Air supply pipe 9: Open / close Valve 10: Motion control device 11: Cooling water conductivity detector 12: Water treatment agent injection device 13: Timer device
Claims (3)
冷却塔における循環冷却水の水質管理方法において、ブ
ロー装置の作動によるブローダウン量を計測し、この計
測したブローダウン量に応じて水を補給すると共に水処
理剤注入装置を作動させ水処理剤を冷却塔における循環
冷却水中に注入して循環冷却水中の水処理剤の濃度を所
望のレベルに維持することを特徴とする冷却塔における
循環冷却水の水質管理方法。1. A method for controlling the quality of circulating cooling water in a cooling tower equipped with a blower and a water treatment agent injecting device, wherein a blowdown amount due to the operation of the blow device is measured, and water is measured according to the measured blowdown amount. In the cooling tower, the water treatment agent injection device is operated and the water treatment agent is injected into the circulating cooling water in the cooling tower to maintain the concentration of the water treating agent in the circulating cooling water at a desired level. Circulation cooling water quality control method.
ー装置の作動時間を計測することによって測定し、この
計測したブロー装置の作動時間に比例して水処理剤注入
装置による水処理剤の注入量を設定するようにした請求
項１に記載の冷却塔における循環冷却水の水質管理方
法。2. The blowdown amount by the blower is measured by measuring the operation time of the blower, and the amount of the water treatment agent injected by the water treatment agent injection device is proportional to the measured operation time of the blower. The water quality control method for circulating cooling water in a cooling tower according to claim 1, wherein
冷却塔内の循環冷却水中に位置決めし他端を冷却塔外へ
連通させて冷却塔内の循環冷却水を冷却塔外へブローダ
ウンさせる逆Ｕ字形のサイホンパイプと、このサイホン
パイプの一端に取付けられサイホンパイプ内へ冷却塔内
の循環冷却水を供給してサイホン現象を生じさせる水供
給手段と、このサイホンパイプの屈曲した頂上部内に空
気を供給してサイホン現象を止める空気供給手段と、上
記水供給手段及び空気供給手段の動作を制御する制御手
段とから成り、制御手段による上記水供給手段の作動開
始時点から空気供給手段の作動開始時点までのサイホン
現象継続時間に比例して水処理剤注入装置を作動させる
ようにした請求項１に記載の冷却塔における循環冷却水
の水質管理方法。3. A blower installed in the cooling tower blows down the circulating cooling water in the cooling tower to the outside of the cooling tower by positioning one end in the circulating cooling water in the cooling tower and communicating the other end to the outside of the cooling tower. An inverted U-shaped siphon pipe, water supply means attached to one end of the siphon pipe for supplying circulating cooling water in the cooling tower into the siphon pipe to cause a siphon phenomenon, and inside the bent top of the siphon pipe The air supply means for stopping the siphon phenomenon by supplying air to the air supply means and the control means for controlling the operations of the water supply means and the air supply means. The water quality control method for circulating cooling water in a cooling tower according to claim 1, wherein the water treatment agent injection device is operated in proportion to the duration of the siphon phenomenon until the start of operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1195691A JPH0712497A (en) | 1991-02-01 | 1991-02-01 | Controlling method for water quality of circulating cooling water of cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1195691A JPH0712497A (en) | 1991-02-01 | 1991-02-01 | Controlling method for water quality of circulating cooling water of cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0712497A true JPH0712497A (en) | 1995-01-17 |
Family
ID=11792073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1195691A Pending JPH0712497A (en) | 1991-02-01 | 1991-02-01 | Controlling method for water quality of circulating cooling water of cooling tower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0712497A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004025036A (en) * | 2002-06-25 | 2004-01-29 | Katayama Chem Works Co Ltd | System and method for controlling concentration of water treating chemicals |
| JP2004191021A (en) * | 2002-12-13 | 2004-07-08 | Kuken Kogyo Co Ltd | Cooling tower |
| KR100652249B1 (en) * | 2005-12-26 | 2006-12-01 | 주식회사 성지공조기술 | Cooling Tower Control System |
| JP2008249275A (en) * | 2007-03-30 | 2008-10-16 | Aquas Corp | Injection method of water treatment agent |
| EP1980535A3 (en) * | 1996-02-29 | 2008-12-10 | Ashland Licensing and Intellectual Property LLC | Performance-based Control System |
| JP2010094624A (en) * | 2008-10-17 | 2010-04-30 | Miura Co Ltd | Operation control unit of circulating water system and method for operating circulating water system |
| JP2011247447A (en) * | 2010-05-24 | 2011-12-08 | Iwaki Co Ltd | Chemical feed control method and chemical feed control device |
| JP2012232306A (en) * | 2012-07-20 | 2012-11-29 | Miura Co Ltd | Method for controlling injection of chemical in circulating water system and apparatus for controlling injection of chemical in the circulating water system |
| JP2013072629A (en) * | 2011-09-29 | 2013-04-22 | Miura Co Ltd | Water treatment system |
| JP2013128926A (en) * | 2013-02-14 | 2013-07-04 | Miura Co Ltd | Operation control device for circulating water system and operation method for circulating water system |
| JP2015057283A (en) * | 2014-11-07 | 2015-03-26 | 三浦工業株式会社 | Chemical dispensation control method for circulated water system and chemical dispensation control device for circulated water system |
| CN111928717A (en) * | 2020-09-08 | 2020-11-13 | 恒力石化(大连)化工有限公司 | Fog dissipation cooling tower heat exchanger siphon groove |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52116947A (en) * | 1976-03-25 | 1977-09-30 | Koumei Tei | Automatic draining device of cooling water of cooling tower |
| JPH0245380B2 (en) * | 1981-09-29 | 1990-10-09 | Nippon Electric Co |
-
1991
- 1991-02-01 JP JP1195691A patent/JPH0712497A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52116947A (en) * | 1976-03-25 | 1977-09-30 | Koumei Tei | Automatic draining device of cooling water of cooling tower |
| JPH0245380B2 (en) * | 1981-09-29 | 1990-10-09 | Nippon Electric Co |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1980535A3 (en) * | 1996-02-29 | 2008-12-10 | Ashland Licensing and Intellectual Property LLC | Performance-based Control System |
| JP2004025036A (en) * | 2002-06-25 | 2004-01-29 | Katayama Chem Works Co Ltd | System and method for controlling concentration of water treating chemicals |
| JP2004191021A (en) * | 2002-12-13 | 2004-07-08 | Kuken Kogyo Co Ltd | Cooling tower |
| KR100652249B1 (en) * | 2005-12-26 | 2006-12-01 | 주식회사 성지공조기술 | Cooling Tower Control System |
| JP2008249275A (en) * | 2007-03-30 | 2008-10-16 | Aquas Corp | Injection method of water treatment agent |
| JP2010094624A (en) * | 2008-10-17 | 2010-04-30 | Miura Co Ltd | Operation control unit of circulating water system and method for operating circulating water system |
| JP2011247447A (en) * | 2010-05-24 | 2011-12-08 | Iwaki Co Ltd | Chemical feed control method and chemical feed control device |
| JP2013072629A (en) * | 2011-09-29 | 2013-04-22 | Miura Co Ltd | Water treatment system |
| JP2012232306A (en) * | 2012-07-20 | 2012-11-29 | Miura Co Ltd | Method for controlling injection of chemical in circulating water system and apparatus for controlling injection of chemical in the circulating water system |
| JP2013128926A (en) * | 2013-02-14 | 2013-07-04 | Miura Co Ltd | Operation control device for circulating water system and operation method for circulating water system |
| JP2015057283A (en) * | 2014-11-07 | 2015-03-26 | 三浦工業株式会社 | Chemical dispensation control method for circulated water system and chemical dispensation control device for circulated water system |
| CN111928717A (en) * | 2020-09-08 | 2020-11-13 | 恒力石化(大连)化工有限公司 | Fog dissipation cooling tower heat exchanger siphon groove |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0712497A (en) | Controlling method for water quality of circulating cooling water of cooling tower | |
| JP5206308B2 (en) | Circulating water system operation control device and circulating water system operating method | |
| JP5736607B2 (en) | Chemical injection control method and chemical injection control device | |
| JP5699445B2 (en) | Water treatment chemical injection management method and apparatus for open circulation cooling water system | |
| US6746609B2 (en) | Cooling tower water treatment | |
| JP5551381B2 (en) | Cooling water chemical injection control method and apparatus | |
| JP2008249275A (en) | Injection method of water treatment agent | |
| US5403521A (en) | Blow system and a method of use therefor in controlling the quality of recycle cooling water in a cooling tower | |
| JP2003130587A (en) | Circulating type cooling apparatus for cooling water and water quality controlling method | |
| JP5226357B2 (en) | Water treatment chemical injection method | |
| JPH06317393A (en) | Water quality control method for circulating cooling water in cooling tower | |
| JP4437262B2 (en) | cooling tower | |
| JPH11248394A (en) | Cooling water controller in cooling water circulation system having cooling tower | |
| JP2991060B2 (en) | Automatic blow chemical injection system for cooling water system | |
| JP2522625B2 (en) | Water quality control method for circulating cooling water in cooling tower | |
| JP2004025036A (en) | System and method for controlling concentration of water treating chemicals | |
| JP2013128927A (en) | Chemicals feeding control method of circulating water system and chemicals feeding control device of circulating water system | |
| JPH10309432A (en) | Air soluble gas removal equipment | |
| JP6084385B2 (en) | Circulating water system chemical injection control method and circulating water system chemical injection control apparatus | |
| WO1990003496A1 (en) | Steam boiler system | |
| JPH0756367B2 (en) | Liquid chemical injection device for boiler water supply | |
| JPH0449446Y2 (en) | ||
| JP6455201B2 (en) | Water treatment system | |
| JPH0583617B2 (en) | ||
| JP2025073633A (en) | Water treatment method for auxiliary cooling device of air-cooled condenser |