JPH08105605A - Interlocking chemical injection system of boiler using electric conductivity in water supply - Google Patents
Interlocking chemical injection system of boiler using electric conductivity in water supplyInfo
- Publication number
- JPH08105605A JPH08105605A JP17196594A JP17196594A JPH08105605A JP H08105605 A JPH08105605 A JP H08105605A JP 17196594 A JP17196594 A JP 17196594A JP 17196594 A JP17196594 A JP 17196594A JP H08105605 A JPH08105605 A JP H08105605A
- Authority
- JP
- Japan
- Prior art keywords
- chemical injection
- water supply
- electric conductivity
- boiler
- chemical
- 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.)
- Granted
Links
Landscapes
- 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、給水中の電気伝導度を
利用したボイラーの連動薬注システムに関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boiler interlocking chemical injection system utilizing electric conductivity in water supply.
【０００２】[0002]
【従来の技術】ボイラーへ給水される水は水管の腐食等
を防止するために、薬液注入が行われている。給水に対
してどれだけの割合で薬液注入を行うかを定める薬注率
は水質によって異なり、水質は水源によって大きく異な
るため、給水の水質を予め測定し、水質により決定され
る薬注率を薬注制御装置へ入力しておき、給水量に連動
して薬注を行っている。しかし、同じ水源からの水であ
っても水質は変動しており、また、ドレン回収を行って
おりドレン回収率が変動する場合、給水水質は大幅に変
動し、適切な薬注率も変動する。しかし、実際に行われ
る制御は最初に測定された水質のみを基準に行われ、適
切な量と実際に行われる量に差が生じ、無駄な薬注を行
ったり、薬注の不足を招いていた。2. Description of the Related Art Water supplied to a boiler is injected with a chemical solution in order to prevent corrosion of a water pipe. Since the chemical injection rate that determines the ratio of chemical injection to the water supply varies depending on the water quality, and the water quality varies greatly depending on the water source, the water quality of the water supply is measured in advance and the chemical injection rate determined by the water quality is used. Injection is input to the control device, and chemicals are injected in tandem with the water supply. However, even if the water is from the same water source, the water quality is fluctuating, and if drain recovery is performed and the drain recovery rate fluctuates, the quality of the water supply will also fluctuate significantly, and the appropriate chemical injection rate will also fluctuate. . However, the control that is actually performed is based only on the water quality that was initially measured, and there is a difference between the appropriate amount and the amount that is actually used, resulting in wasteful dosing or insufficient dosing. It was
【０００３】[0003]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、給水の流量のみならず水質変化にも追随
し、常に最適な薬注率を保つ薬注システムの提供にあ
る。The problem to be solved by the present invention is to provide a chemical dosing system which always keeps an optimum chemical dosing rate by not only following the flow rate of water supply but also the water quality change.
【０００４】[0004]
【課題を解決するための手段】給水系統途中に薬注装置
を接続し、給水量に応じて薬液装置を稼働させて薬注を
行うボイラーにおいて、給水系統途中に給水の電気伝導
度を検出する電気伝導度計を設け、検出された電気伝導
度を薬注制御装置に入力し、薬注制御装置に予め入力さ
れていた計算式に基づいて薬注率を補正し、補正した薬
注率になるよう薬注装置の稼働制御を行う。[Means for Solving the Problem] In a boiler that connects a chemical injection device in the middle of a water supply system and operates a chemical liquid device according to the amount of water supplied to perform chemical injection, the electrical conductivity of the water supply is detected in the middle of the water supply system. An electric conductivity meter is provided, the detected electric conductivity is input to the chemical injection control device, and the chemical injection rate is corrected based on the formula previously input to the chemical injection control device. The operation of the chemical injection device is controlled so that
【０００５】[0005]
【作用】給水の電気伝導度を常時検出し、検出された電
気伝導度によって薬注率を設定することで、変動する水
質に合わせて常に最適な薬注を行うことができる。Function: By constantly detecting the electric conductivity of the feed water and setting the chemical injection rate according to the detected electric conductivity, it is possible to always perform optimum chemical injection according to the varying water quality.
【０００６】[0006]
【実施例】本発明の一実施例を図面を用いて説明する。
図１に示すようにボイラー（１）の下部に接続された給
水配管（２）は途中に給水タンク（３）、給水ポンプ
（４）、電気伝導度計（５）、流量計（１３）が設けら
れており、薬注装置（６）からの薬注配管が給水配管に
接続されている。電気伝導度計にて検出された電気伝導
度は、電気伝導度異常検出装置（１４）へ送られ、異常
の有無が確認される。また、給水ポンプ、薬注装置、ボ
イラー、電気伝導度異常検出装置、流量計に接続された
ボイラー制御装置（１２）は、内部に給水制御部・薬注
制御部・燃焼制御部などを持ち各制御を行う。ボイラー
内で発生した蒸気は蒸気連絡管（１０）を通って気水分
離器（７）へ送られ、気液分離されて蒸気のみを取り出
し、分離された液体は降水管（８）を通ってボイラー内
へ戻される。降水管下部に接続されたブロー配管（９）
の途中には電磁開閉式の濃縮ブロー弁（１１）が設けら
れている。An embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the water supply pipe (2) connected to the lower part of the boiler (1) has a water supply tank (3), a water supply pump (4), an electric conductivity meter (5), and a flow meter (13) on the way. It is provided and the chemical injection pipe from the chemical injection device (6) is connected to the water supply pipe. The electrical conductivity detected by the electrical conductivity meter is sent to the electrical conductivity abnormality detecting device (14), and the presence or absence of abnormality is confirmed. Further, the boiler control device (12) connected to the water supply pump, the chemical injection device, the boiler, the electrical conductivity abnormality detection device, and the flow meter has a water supply control unit, a chemical injection control unit, a combustion control unit, and the like inside. Take control. The steam generated in the boiler is sent to the steam-water separator (7) through the steam communication pipe (10) and is separated into gas and liquid to take out only the steam, and the separated liquid passes through the downcomer pipe (8). Returned to the boiler. Blow piping connected to the bottom of the downcomer (9)
An electromagnetic opening-and-closing type concentration blow valve (11) is provided in the middle of.
【０００７】電気伝導度計は給水の電気伝導度を計測
し、電気伝導度を電気伝導度計異常検出装置へ出力す
る。電気伝導度計異常検出装置には、正常な範囲の電気
伝導度と最初に検出しておいた電気伝導度が記憶されて
おり、電気伝導度計にて検出される電気伝導度が正常範
囲内に有ったとき、電気伝導度計からの値をそのままボ
イラー制御装置へ、正常範囲内に無かった時には記憶し
ておいた電気伝導度をボイラー制御装置へ出力する。電
気伝導度が入力されたボイラー制御装置の薬注制御部
は、予め入力されていた計算式により薬注率を算出す
る。ボイラー制御装置は、算出しておいた薬注率と、流
量計にて検出された給水量より薬注装置の稼働制御を行
う。The electrical conductivity meter measures the electrical conductivity of the feed water and outputs the electrical conductivity to the electrical conductivity meter abnormality detection device. The electrical conductivity meter abnormality detection device stores the electrical conductivity within the normal range and the electrical conductivity that was initially detected, and the electrical conductivity detected by the electrical conductivity meter is within the normal range. When it is, the value from the electric conductivity meter is output to the boiler control device as it is, and when it is not within the normal range, the stored electric conductivity is output to the boiler control device. The chemical injection control unit of the boiler control device, to which the electric conductivity is input, calculates the chemical injection rate by the previously input calculation formula. The boiler control device controls the operation of the chemical injection device based on the calculated chemical injection rate and the water supply amount detected by the flow meter.
【０００８】[0008]
【発明の効果】本発明は、以上のように給水の電気伝導
度を検出し、水質の変化に合わせて薬注率を補正するこ
とによって、常にその時の給水に合った薬注率を選定す
ることができ、薬注不足や薬注過多を起こすことの無い
薬注制御を行うことができる。また、一定の薬注率を保
つバックアップ機能を持たせることで、電気伝導度計に
異常が発生しても最適に近い状態での薬注を続けること
ができる。As described above, according to the present invention, the electrical conductivity of the water supply is detected and the chemical injection rate is corrected according to the change of the water quality, so that the chemical injection rate suitable for the water supply at that time is always selected. Therefore, it is possible to perform drug injection control without causing insufficient drug injection or excessive drug injection. Further, by providing a backup function for keeping a constant chemical injection rate, even if an abnormality occurs in the electric conductivity meter, it is possible to continue chemical injection in a state close to the optimum.
【図１】 本発明の一実施例の概略説明FIG. 1 is a schematic description of an embodiment of the present invention.
１ ボイラー ２ 給水配管 ３ 給水タンク ４ 給水ポンプ ５ 電気伝導度計 ６ 薬注装置 ７ 気水分離器 ８ 降水管 ９ ブロー配管 １０ 蒸気連絡管 １１ 濃縮ブロー弁 １２ ボイラー制御装置 １３ 流量計 １４ 電気伝導度計異常検出装置 1 Boiler 2 Water supply pipe 3 Water supply tank 4 Water supply pump 5 Electric conductivity meter 6 Chemical injection device 7 Steam separator 8 Downcomer pipe 9 Blow pipe 10 Steam connection pipe 11 Concentration blow valve 12 Boiler control device 13 Flowmeter 14 Electric conductivity Meter abnormality detection device
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岡田 富造 香川県観音寺市八幡町３丁目４番15号 株 式会社サムソン内 (72)発明者 満田 泰啓 東京都新宿区横寺町58番地 クリタ・ビー エムエス株式会社内 (72)発明者 中村 一 東京都新宿区横手町58番地 クリタ・ビー エムエス株式会社内 (72)発明者 藤田 哲次 東京都新宿区横寺町58番地 クリタ・ビー エムエス株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Tomizo Okada 3-4-15, Hachiman-cho, Kanonji-shi, Kagawa, Ltd. Within Samsung Corporation (72) Inventor, Yasunori Mitsuda 58 Yokotera-cho, Shinjuku-ku, Tokyo Kurita BMS Co., Ltd. (72) Inventor Hajime Nakamura 58 Yokote-cho, Shinjuku-ku, Tokyo Kurita BMS Co., Ltd. (72) Inventor Tetsuji Fujita 58, Yokotera-cho, Shinjuku-ku, Tokyo Kurita BMS Co., Ltd.
Claims (2)
量に応じて薬液装置を稼働させて薬注を行うボイラーに
おいて、給水系統途中に給水の電気伝導度を検出する電
気伝導度計を設け、検出された電気伝導度を薬注制御装
置に入力し、薬注制御装置に予め入力されていた計算式
に基づいて薬注率を補正し、補正した薬注率になるよう
薬注装置の稼働制御を行うことを特徴とする給水中の電
気伝導度を利用したボイラーの連動薬注システム。1. A boiler for connecting a chemical injection device in the middle of a water supply system and operating a chemical liquid device in accordance with the amount of water supplied to perform chemical injection, for detecting the electric conductivity of the supply water in the middle of the water supply system. Is provided, the detected electrical conductivity is input to the chemical injection control device, the chemical injection rate is corrected based on the formula previously input to the chemical injection control device, and the chemical injection rate is adjusted to the corrected chemical injection rate. A boiler interlocking chemical injection system that utilizes the electrical conductivity of the water supply, which controls the operation of the equipment.
ボイラーの連動薬注システムにおいて、電気伝導度計の
異常の有無を判断する電気伝導度異常検出装置を設け、
電気伝導度計に異常が生じた場合には電気伝導度による
補正を中止し、予め記憶しておいた正常時の電気伝導度
を用いて、一定の薬注率にて薬注を行わせるボイラーの
連動薬注システム。2. The boiler interlocking chemical injection system using the electrical conductivity according to claim 1, further comprising an electrical conductivity abnormality detecting device for determining whether or not there is an abnormality in the electrical conductivity meter,
When an abnormality occurs in the electric conductivity meter, the correction by the electric conductivity is stopped, and the normal electric conductivity stored in advance is used to perform the chemical injection at a constant chemical injection rate. Interlocking drug injection system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17196594A JP2933827B2 (en) | 1994-06-29 | 1994-06-29 | Boiler-linked drug injection system using electrical conductivity in water supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17196594A JP2933827B2 (en) | 1994-06-29 | 1994-06-29 | Boiler-linked drug injection system using electrical conductivity in water supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08105605A true JPH08105605A (en) | 1996-04-23 |
| JP2933827B2 JP2933827B2 (en) | 1999-08-16 |
Family
ID=15933047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17196594A Expired - Fee Related JP2933827B2 (en) | 1994-06-29 | 1994-06-29 | Boiler-linked drug injection system using electrical conductivity in water supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2933827B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007268397A (en) * | 2006-03-31 | 2007-10-18 | Kurita Water Ind Ltd | Treatment method and treatment apparatus for boiler water system for supplying pure water |
| JP2015117912A (en) * | 2013-12-19 | 2015-06-25 | 三浦工業株式会社 | Boiler system |
-
1994
- 1994-06-29 JP JP17196594A patent/JP2933827B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007268397A (en) * | 2006-03-31 | 2007-10-18 | Kurita Water Ind Ltd | Treatment method and treatment apparatus for boiler water system for supplying pure water |
| JP2015117912A (en) * | 2013-12-19 | 2015-06-25 | 三浦工業株式会社 | Boiler system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2933827B2 (en) | 1999-08-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4033376B2 (en) | Fuel supply device | |
| JPH09155180A (en) | Liquid mixing device | |
| JP2005276578A (en) | Fluid supply system | |
| JPH08105605A (en) | Interlocking chemical injection system of boiler using electric conductivity in water supply | |
| JP2007031739A (en) | Method for controlling operation of water electrolysis apparatus, and device therefor | |
| JP4274816B2 (en) | Power generation system, operation method thereof, and operation control device | |
| JP2007146806A (en) | Fuel system for liquefied gas fuel engine | |
| JP2006132891A (en) | Hot water supply apparatus | |
| JP2853097B2 (en) | Concentration blower for boiler using electric conductivity in feed water | |
| JP2017004629A (en) | Fuel cell power generation device | |
| JP3540627B2 (en) | Distributing valve control device | |
| JP4471459B2 (en) | Boiler water supply control device | |
| JP2005249708A (en) | Gas leakage detector of high-pressure tank system | |
| JP3669638B2 (en) | Concentration blow control method for boiler | |
| JP2987333B2 (en) | Boiler dosing control method | |
| JP4071386B2 (en) | Chemical injection device in boiler multi-can installation system | |
| JPH04148313A (en) | Marine organism sticking prevention device | |
| JPS643522B2 (en) | ||
| JP4296915B2 (en) | Gas shut-off device | |
| JP2009019669A (en) | Gas charging determination device | |
| JPH0571703A (en) | Automatic chemical agent pouring device in multiboiler installation system | |
| JPH07119949A (en) | Method for controlling and apparatus for controlling soot blower of boiler and deslagging device | |
| JPH027840Y2 (en) | ||
| JP2002081614A (en) | Device and method for injecting oxygen into boiler | |
| JP4059573B2 (en) | Water supply control device with two water level detection cylinders |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080528 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090528 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100528 Year of fee payment: 11 |
|
| LAPS | Cancellation because of no payment of annual fees |