JPH0711297Y2 - Boiler chemical injection control device - Google Patents
Boiler chemical injection control deviceInfo
- Publication number
- JPH0711297Y2 JPH0711297Y2 JP1990069442U JP6944290U JPH0711297Y2 JP H0711297 Y2 JPH0711297 Y2 JP H0711297Y2 JP 1990069442 U JP1990069442 U JP 1990069442U JP 6944290 U JP6944290 U JP 6944290U JP H0711297 Y2 JPH0711297 Y2 JP H0711297Y2
- Authority
- JP
- Japan
- Prior art keywords
- chemical injection
- boiler
- water
- control device
- pump
- 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 - Lifetime
Links
Description
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は、ボイラの給水へ腐食防止のために注入する
薬品量を、適正な値に制御するための薬注制御装置に関
するものである。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a chemical injection control device for controlling an appropriate amount of a chemical injected into a feedwater of a boiler to prevent corrosion.
周知のように、ボイラでは、缶内の腐食を防止するため
に、ボイラ給水へ薬品（腐食防止剤）を注入するように
しているが、そのための薬注装置としては、薬注タンク
を設け、この薬注タンクとボイラの給水ラインとを、薬
注ポンプを挿入して成る薬注ラインで連結して構成した
ものがある。この装置においては、給水ポンプと薬注ポ
ンプを連動させて駆動することにより、一定の濃度で薬
品を注入するようにしているが、実用上は必ずしも一定
の濃度にならない。つまり、ボイラの缶内圧によって給
水流量が変化し、缶内圧が高いときには給水流量が減少
し、缶内圧が低いときには給水流量が増加するため、一
定量の薬品を注入してもその濃度が変化し、適正な薬注
濃度を維持することは困難であった。As is well known, in the boiler, in order to prevent corrosion in the can, a chemical (corrosion inhibitor) is injected into the boiler feed water, but as a chemical injection device therefor, a chemical injection tank is provided, There is a configuration in which the chemical injection tank and the water supply line of the boiler are connected by a chemical injection line formed by inserting a chemical injection pump. In this device, the chemicals are injected at a constant concentration by driving the water supply pump and the chemical injection pump in conjunction with each other, but the concentration is not always constant in practical use. In other words, the feed water flow rate changes depending on the boiler internal pressure, the feed water flow rate decreases when the can internal pressure is high, and the feed water flow rate increases when the can internal pressure is low. However, it was difficult to maintain the proper drug concentration.
この考案は、上述の課題に鑑み、適正な薬注濃度を常時
維持することができる薬注制御装置を提供するもので、
ボイラに給水ポンプを挿入して成る給水ラインを接続
し、この給水ラインに薬注ポンプを挿入して成る薬注ラ
インを連結した構成において、前記ボイラへの給水量を
検出し、給水量が予め設定しておいた値に達すると、前
記薬注ポンプをタイマーにより所定の時間稼動させるよ
うに働く薬注制御器を設けたことを特徴としており、
又、給水温度或いは缶水の濃縮度を検出し、その値によ
って薬注ポンプの稼動時間を調節する調節器を設けるよ
うにしてもよい。In view of the above-mentioned problems, the present invention provides a chemical injection control device capable of always maintaining an appropriate chemical injection concentration,
In the configuration in which a water supply line formed by inserting a water supply pump is connected to the boiler and a chemical injection line formed by inserting a chemical injection pump is connected to this water supply line, the amount of water supplied to the boiler is detected and When the set value is reached, it is characterized by providing a drug injection controller that operates the drug injection pump by a timer for a predetermined time,
Further, a controller for detecting the supply water temperature or the concentration of the canned water and adjusting the operating time of the chemical injection pump according to the detected value may be provided.
上述の構成によれば、ボイラへの給水量を算出し、給水
量が予め設定しておいた値に達すると、薬注ポンプをタ
イマーにより所定の時間稼動させて、給水量に対して常
に一定の割合で薬品を注入することができる。又、給水
温度或いは缶水の濃縮度に応じて薬注ポンプの稼動時間
を調節することにより、缶水の状況に合わせて薬品の効
能が最も高い濃度に調節し、維持することができる。According to the above configuration, the amount of water supplied to the boiler is calculated, and when the amount of water supplied reaches the preset value, the chemical pump is operated by the timer for a predetermined time, and the amount of water supplied is always constant. The drug can be injected at the rate of. In addition, by adjusting the operating time of the chemical injection pump according to the feed water temperature or the concentration of canned water, it is possible to adjust and maintain the concentration of the chemical having the highest efficacy according to the situation of the canned water.
以下、この考案の好ましい実施例を図面に基づいて説明
する。A preferred embodiment of the present invention will be described below with reference to the drawings.
図中（１）はボイラで、加熱用のバーナ（２）を備えて
おり、送風機（３）にて燃焼用空気を該バーナに送るよ
うにしている。前記バーナ（２）には燃料供給ライン
（４）を接続し、このラインに燃料ポンプ（５）及び燃
料用電磁弁（６）を挿設している。（７）は火炎検出器
で、火炎の有無を検出する。In the figure, (1) is a boiler, which is equipped with a burner (2) for heating, and blower air (3) is used to send combustion air to the burner. A fuel supply line (4) is connected to the burner (2), and a fuel pump (5) and a fuel solenoid valve (6) are inserted in this line. (7) is a flame detector that detects the presence or absence of a flame.
ボイラ（１）の稼動、停止は、負荷の状況によって制御
し、ボイラ缶内圧を検出する圧力検出器（８）の信号に
基づいて、燃焼制御器（９）により制御する。即ち、缶
内圧が予め設定しておいた圧力値以上になれば燃焼を停
止し、缶内圧が設定値以下なれば燃焼を開始するように
制御する。The operation and stop of the boiler (1) are controlled by the load condition, and are controlled by the combustion controller (9) based on the signal of the pressure detector (8) that detects the boiler can internal pressure. That is, the control is performed so that the combustion is stopped when the can internal pressure becomes equal to or higher than a preset pressure value, and the combustion is started when the can internal pressure becomes equal to or lower than the set value.
（10）はボイラ缶内の水位を検出するための水位検出器
であり、この検出器の信号に基づいて、適宜の水位制御
装置により、給水ライン（11）中の給水ポンプ（12）を
ON-OFF稼動させ、缶内の水位を一定のレベルに保つ。(10) is a water level detector for detecting the water level in the boiler can. Based on the signal of this detector, an appropriate water level controller controls the water supply pump (12) in the water supply line (11).
Turn on and off to keep the water level in the can at a certain level.
（13）は薬注制御器で、ボイラへの給水量に従って、該
給水量が予め設定しておいた値に達すると、薬注ポンプ
（14）をタイマーにより所定の時間稼動させるように働
く。前記薬注ポンプ（14）は、薬注タンク（15）と前記
給水ライン（11）を連結する薬注ライン（16）に挿入し
てある。給水量の検出は、給水ライン（11）に流量計を
挿設して直接測定するようにしてもよいが、その他、ボ
イラの燃焼時間より給水量を算出する方法もある。薬注
ポンプが所定の時間稼動した後停止すると、それまで記
憶していた給水量のデータをリセットし、改めて給水量
を積算する。(13) is a chemical injection controller, which operates a chemical injection pump (14) with a timer for a predetermined time when the amount of water supplied to the boiler reaches a preset value. The chemical injection pump (14) is inserted in a chemical injection line (16) connecting the chemical injection tank (15) and the water supply line (11). The amount of water supply may be detected by inserting a flow meter into the water supply line (11) and directly measuring it, but there is another method of calculating the amount of water supply from the combustion time of the boiler. When the chemical pump is stopped after operating for a predetermined time, the stored water supply data is reset and the water supply amount is accumulated again.
又、薬品の効能は、水の温度或いは缶水の濃縮度（電気
伝導度等）の影響によって変化するので、最も高い効能
を得るために、給水温度或いは缶水の濃縮度に合わせて
薬品が最も高い効能を発揮できる濃度になるように、薬
注量即ち薬注ポンプの稼動時間を調節器（17）で調節す
る。（18）は給水温度を測定するための温度検出器であ
る。缶水の濃縮度の検出は、缶内に電気伝導度センサを
設けて測定するようにしてもよいが、ブロー後のボイラ
の燃焼時間より推定することもできる。In addition, the efficacy of chemicals changes depending on the temperature of water or the concentration (conductivity) of canned water. Therefore, in order to obtain the highest efficacy, the chemicals should be adjusted according to the feed water temperature or the concentration of canned water. The dosing amount, that is, the operation time of the dosing pump is adjusted by the adjuster (17) so that the concentration has the highest efficacy. (18) is a temperature detector for measuring the feed water temperature. The concentration of the canned water may be detected by providing an electric conductivity sensor inside the can, but it can also be estimated from the combustion time of the boiler after blowing.
この考案は、以上のような構成であり、薬注ポンプの動
作を給水ポンプと直接連動させることなく、給水量が予
め設定しておいた値に達すると（単位給水量毎に）、薬
注ポンプをタイマーにより所定の時間稼動させるので、
ボイラの缶内圧に関係なく、給水量に対して常に一定の
割合で薬品を注入することができる。従って、薬注濃度
を適正な値に維持して、効果的に缶内の腐食を防止する
ことができる。The present invention is configured as described above, and when the water supply amount reaches a preset value (for each unit water supply amount) without directly interlocking the operation of the water injection pump with the water supply pump, Since the pump is operated for a predetermined time with a timer,
Regardless of the boiler internal pressure, it is possible to inject chemicals at a constant rate with respect to the amount of water supplied. Therefore, the chemical concentration can be maintained at an appropriate value to effectively prevent corrosion in the can.
又、給水温度或いは缶水の濃縮度に応じて薬注ポンプの
稼動時間を調節することにより、缶水の状況に合わせて
薬品に最も高い効能を発揮させることができる。In addition, by adjusting the operating time of the chemical injection pump according to the feed water temperature or the concentration of the canned water, it is possible to exert the highest effect on the chemicals according to the condition of the canned water.
第１図は、この考案の一実施例を示す系統図である。 （１）……ボイラ、（11）……給水ライン （12）……給水ポンプ、（13）……薬注制御器 （14）……薬注ポンプ、（16）……薬注ライン （17）……調節器 FIG. 1 is a system diagram showing an embodiment of the present invention. (1) …… Boiler, (11) …… Water supply line (12) …… Water supply pump, (13) …… Medication injection controller (14) …… Medication injection pump, (16) …… Medication injection line (17) ) …… Adjuster
───────────────────────────────────────────────────── フロントページの続き (72)考案者 坪田 吉民 愛媛県松山市堀江町７番地 三浦工業株式 会社内 (72)考案者 菅野 均 愛媛県松山市堀江町７番地 三浦工業株式 会社内 (72)考案者 安藤 秀朗 愛媛県松山市堀江町７番地 三浦工業株式 会社内 (72)考案者 重松 敬 愛媛県松山市堀江町７番地 三浦工業株式 会社内 審査官 清田 栄章 (56)参考文献 特開 昭59−4806（ＪＰ，Ａ) 特開 昭50−94303（ＪＰ，Ａ) 実開 平２−45306（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshimin Tsubota 7 Horie-cho, Matsuyama-shi, Ehime Prefecture Miura Kogyo Co., Ltd. (72) Inventor Hitoshi Sugano 7 Horie-cho, Matsuyama-shi Ehime, Miura Kogyo Co., Ltd. (72 ) Hideo Ando, 7 Horie-cho, Matsuyama-shi, Ehime, Miura Kogyo Co., Ltd. (72) Kei Shigematsu, 7 Horie-cho, Matsuyama-shi, Ehime, Miura Kogyo Co., Ltd. Eisuke Kiyota (56) References Sho 59-4806 (JP, A) JP-A 50-94303 (JP, A) Actual Kaihei 2-45306 (JP, U)
Claims (3)
て成る給水ライン（11）を接続し、この給水ラインに薬
注ポンプ（14）を挿入して成る薬注ライン（16）を連結
した構成において、前記ボイラへの給水量を検出し、給
水量が予め設定しておいた値に達すると、前記薬注ポン
プをタイマーにより所定の時間稼動させるように働く薬
注制御器（13）を備えたことを特徴とするボイラの薬注
制御装置。Claim: What is claimed is: 1. A boiler (1) is connected to a water supply line (11) formed by inserting a water supply pump (12), and a chemical injection pump (14) is inserted in the water supply line. In the configuration of connecting, the amount of water supplied to the boiler is detected, and when the amount of water supplied reaches a preset value, a chemical injection controller that operates the chemical injection pump for a predetermined time by a timer ( 13) A boiler chemical injection control device characterized by comprising:
イラの薬注制御装置において、給水温度を検出し、その
値によって薬注ポンプ（14）の稼動時間を調節する調節
器（17）を設けたことを特徴とするボイラの薬注制御装
置。2. The boiler chemical injection control device according to claim 1 of the utility model registration, the regulator (17) for detecting the feed water temperature and adjusting the operating time of the chemical injection pump (14) according to the detected value. ) Is provided in the boiler chemical injection control device.
ボイラの薬注制御装置において、缶水の濃縮度を検出
し、その値によって薬注ポンプ（14）の稼動時間を調節
する調節器（17）を設けたことを特徴とするボイラの薬
注制御装置。3. The boiler chemical injection control device according to claim 1 of the utility model registration, detects the concentration of can water and adjusts the operating time of the chemical injection pump (14) according to the detected value. A boiler chemical injection control device comprising a regulator (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990069442U JPH0711297Y2 (en) | 1990-06-28 | 1990-06-28 | Boiler chemical injection control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990069442U JPH0711297Y2 (en) | 1990-06-28 | 1990-06-28 | Boiler chemical injection control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0433813U JPH0433813U (en) | 1992-03-19 |
| JPH0711297Y2 true JPH0711297Y2 (en) | 1995-03-15 |
Family
ID=31604749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990069442U Expired - Lifetime JPH0711297Y2 (en) | 1990-06-28 | 1990-06-28 | Boiler chemical injection control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0711297Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5925371B1 (en) * | 2015-09-18 | 2016-05-25 | 三菱日立パワーシステムズ株式会社 | Water quality management device, water treatment system, water quality management method, and water treatment system optimization program |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2594224B2 (en) * | 1993-10-27 | 1997-03-26 | 株式会社関口 | Water supply addition / subtraction type water supply proportional drug injection device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5119245U (en) * | 1974-07-31 | 1976-02-12 | ||
| JPS57139298A (en) * | 1981-02-24 | 1982-08-28 | Miura Co Ltd | Automatic neutralizing washing of economizer |
| JPS6134310U (en) * | 1984-08-01 | 1986-03-03 | 三浦工業株式会社 | Chemical injection control device to boiler |
| JPH0756367B2 (en) * | 1987-12-18 | 1995-06-14 | 株式会社荏原製作所 | Liquid chemical injection device for boiler water supply |
| JPH08571Y2 (en) * | 1988-09-20 | 1996-01-10 | 三浦工業株式会社 | Boiler chemical injection device |
-
1990
- 1990-06-28 JP JP1990069442U patent/JPH0711297Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5925371B1 (en) * | 2015-09-18 | 2016-05-25 | 三菱日立パワーシステムズ株式会社 | Water quality management device, water treatment system, water quality management method, and water treatment system optimization program |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0433813U (en) | 1992-03-19 |
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