JP2933827B2 - Boiler-linked drug injection system using electrical conductivity in water supply - Google Patents
Boiler-linked drug injection system using electrical conductivity in water supplyInfo
- Publication number
- JP2933827B2 JP2933827B2 JP17196594A JP17196594A JP2933827B2 JP 2933827 B2 JP2933827 B2 JP 2933827B2 JP 17196594 A JP17196594 A JP 17196594A JP 17196594 A JP17196594 A JP 17196594A JP 2933827 B2 JP2933827 B2 JP 2933827B2
- Authority
- JP
- Japan
- Prior art keywords
- water supply
- electrical conductivity
- boiler
- electric conductivity
- injection
- 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.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 43
- 238000002347 injection Methods 0.000 title claims description 32
- 239000007924 injection Substances 0.000 title claims description 32
- 239000003814 drug Substances 0.000 title description 8
- 229940079593 drug Drugs 0.000 title description 8
- 239000000126 substance Substances 0.000 claims description 24
- 230000005856 abnormality Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000001802 infusion Methods 0.000 claims 1
- 238000011084 recovery Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000012377 drug delivery Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Landscapes
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【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 an interlocking chemical injection system for a boiler 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 Chemicals are injected into water supplied to a boiler in order to prevent corrosion of a water pipe. The chemical injection rate, which determines how much of the chemical is injected into the water supply, depends on the water quality, and the water quality varies greatly depending on the water source. It is input to the injection control device, and the chemical injection is performed in conjunction with the water supply amount. However, even if the water is from the same water source, the water quality fluctuates, and if drain recovery is performed and the drain recovery rate fluctuates, the water supply water quality fluctuates significantly and the appropriate chemical injection rate also fluctuates. . However, the control actually performed is performed only based on the water quality measured first, and there is a difference between the appropriate amount and the amount actually performed, resulting in unnecessary or inadequate drug injection. 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、また電気伝導度計に異常が発生しても適正な薬注率
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 follow not only the flow rate of the feed water but also the change in water quality, and to maintain an appropriate chemical injection rate even if an abnormality occurs in the electric conductivity meter. It is in providing a drug delivery system to keep.
【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 Problems In a boiler in which a chemical injection device is connected in the middle of a water supply system and a chemical solution device is operated in accordance with the amount of water supply to perform chemical injection, the electric conductivity of the water supply is detected in the middle of the water supply system. Provide an electric conductivity meter, input the detected electric conductivity to the drug injection control device, correct the drug injection rate based on the formula previously input to the drug injection control device, and adjust the corrected drug injection rate to The operation control of the chemical injection device is performed so as to be as follows.
【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。By always detecting the electric conductivity of the water supply and setting the injection rate based on the detected electric conductivity, it is possible to always perform the optimal injection according to the fluctuating 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, a water supply pipe (2) connected to a lower part of the boiler (1) includes a water supply tank (3), a water supply pump (4), an electric conductivity meter (5), and a flow meter (13) in the middle. A chemical injection pipe from the chemical injection device (6) is connected to a water supply pipe. The electric conductivity detected by the electric conductivity meter is sent to the electric conductivity abnormality detecting device (14), and the presence or absence of an abnormality is confirmed. Further, the water supply pump, the chemical injection device, the boiler, the electrical conductivity abnormality detection device, and the boiler control device (12) connected to the flow meter have a water supply control unit, a chemical injection control unit, a combustion control unit, etc. inside. Perform control. The steam generated in the boiler is sent to a steam-water separator (7) through a steam connecting pipe (10), and is separated into gas and liquid by extracting only steam. The separated liquid passes through a downcomer (8). Returned into the boiler. Blow pipe connected to the lower part of the downcomer (9)
Is provided with a solenoid-operated concentration blow valve (11).
【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 electric conductivity meter measures the electric conductivity of the water supply and outputs the electric conductivity to the electric conductivity meter abnormality detecting device. The electrical conductivity meter abnormality detection device stores the electrical conductivity in the normal range and the electrical conductivity detected first, and the electrical conductivity detected by the electrical conductivity meter is within the normal range. , The value from the electric conductivity meter is output to the boiler control device as it is, and when the value is not within the normal range, the stored electric conductivity is output to the boiler control device. The dosing control unit of the boiler control device to which the electric conductivity has been input calculates the dosing rate according to a previously input formula. The boiler control device controls the operation of the chemical injection device based on the calculated chemical injection ratio and the amount of water supply 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, the present invention detects the electric conductivity of the water supply and corrects the chemical injection rate in accordance with the change in the water quality, thereby always selecting the chemical injection rate suitable for the water supply at that time. Thus, it is possible to perform drug injection control without causing insufficient or excessive drug injection. In addition, by providing a backup function for maintaining a constant dosing rate, even if an abnormality occurs in the electric conductivity meter, it is possible to continue the dosing in an almost optimum state.
【図１】 本発明の一実施例の概略説明FIG. 1 is a schematic description of one 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 REFERENCE SIGNS LIST 1 boiler 2 water supply pipe 3 water supply tank 4 water supply pump 5 electric conductivity meter 6 chemical injection device 7 steam-water separator 8 downcomer 9 blow pipe 10 steam communication pipe 11 concentration blow valve 12 boiler control device 13 flow meter 14 electric conductivity Meter abnormality detection device
───────────────────────────────────────────────────── フロントページの続き (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 審査官 鈴木 敏史 (56)参考文献 特開 昭58−186487（ＪＰ，Ａ) 特開 平１−148952（ＪＰ，Ａ) 実開 平２−45307（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) F22B 37/56 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazumi Nakamura 58 Kurita BMs Co., Ltd., Shinjuku-ku, Tokyo (72) Inventor Tetsuji Fujita Kurita BMs 58 Co., Ltd. Examiner Toshifumi Suzuki (56) References JP-A-58-186487 (JP, A) JP-A-1-148952 (JP, A) JP-A-2-45307 (JP, U) (58) Fields investigated Int.Cl. 6 , DB name) F22B 37/56
Claims (1)
量に応じて薬液装置を稼働させて薬注を行うボイラーで
あって、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。1. A boiler for connecting a chemical injection device in the middle of a water supply system and injecting a chemical by operating a chemical liquid device in accordance with the amount of water supply, wherein the electric conductivity detects the electrical conductivity of the water supply in the middle of the water supply system. Provide a degree meter, input the detected electrical conductivity to the dosing control device, correct the dosing rate based on the calculation formula previously input to the dosing control device, so that the corrected dosing rate becomes In an interlocked boiler injection system that uses the electrical conductivity of the water supply to control the operation of the chemical infusion device, an electrical conductivity abnormality detection device that determines the presence or absence of an abnormality in the electrical conductivity meter is provided. If an abnormality occurs, stop the correction by the electric conductivity and use the pre-stored normal electric conductivity to perform the injection at a constant injection rate. .
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 JPH08105605A (en) | 1996-04-23 |
| JP2933827B2 true 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) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4983069B2 (en) * | 2006-03-31 | 2012-07-25 | 栗田工業株式会社 | Pure water supply boiler water system treatment method and treatment apparatus |
| JP6213214B2 (en) * | 2013-12-19 | 2017-10-18 | 三浦工業株式会社 | Boiler system |
-
1994
- 1994-06-29 JP JP17196594A patent/JP2933827B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08105605A (en) | 1996-04-23 |
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