JPS626874B2 - - Google Patents
Info
- Publication number
- JPS626874B2 JPS626874B2 JP15365381A JP15365381A JPS626874B2 JP S626874 B2 JPS626874 B2 JP S626874B2 JP 15365381 A JP15365381 A JP 15365381A JP 15365381 A JP15365381 A JP 15365381A JP S626874 B2 JPS626874 B2 JP S626874B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- storage tank
- water supply
- water storage
- magnet
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 78
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 27
- 235000013980 iron oxide Nutrition 0.000 claims description 20
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 claims description 13
- 238000010248 power generation Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 238000009434 installation Methods 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 5
- 230000005291 magnetic effect Effects 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は発電用プラントの給水系統の鉄酸化物
を磁石によつて除去する酸化物除去装置の改良に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an improvement in an oxide removal device that uses a magnet to remove iron oxide from a water supply system of a power generation plant.
一般に、火力発電プラントおよびその他の発電
プラントにおける主要機器、装置および配管は大
部分が鉄鋼材で構成されている。また、循環媒体
には高純度水を使用し、さらに、構成材料を防食
するために微量の薬剤を添加する水処理を実施し
て系統水中の鉄濃度を管理している。しかし、長
年の使用により、鉄鋼材から少しずつ溶出した鉄
が鉄酸化物（主に強磁性体のFe3O4およびγ−
Fe2O3）として蓄積される。この鉄酸化物は、ボ
イラ水管内面、タービン、高圧給水加熱器。給水
流量計、各種弁等に付着、析出して、(1)水管の焼
損、(2)タービン出力の低下、(3)差圧上昇によるポ
ンプの過負過運転、(4)流量計指示の不適当の種の
原因となる。したがつて、発電プラントの給水系
統水中の鉄酸化物を除去することは、発電プラン
トの信頼性向上および出力上昇の点から重要な課
題である。
In general, most of the main equipment, devices, and piping in thermal power plants and other power plants are made of steel. In addition, high-purity water is used as the circulating medium, and the iron concentration in the system water is controlled by water treatment in which a small amount of chemicals are added to prevent corrosion of the constituent materials. However, over many years of use, iron gradually leaches from steel materials and forms iron oxides (mainly ferromagnetic Fe 3 O 4 and γ-
It is accumulated as Fe 2 O 3 ). This iron oxide is used on the inner surface of boiler water pipes, turbines, and high-pressure feed water heaters. It adheres and deposits on water supply flowmeters, various valves, etc., resulting in (1) burnout of water pipes, (2) decrease in turbine output, (3) overload operation of pumps due to increased differential pressure, and (4) failure of flow meter indications. Causes seeds of inappropriateness. Therefore, removing iron oxides from water in water supply systems of power plants is an important issue from the standpoint of improving reliability and increasing output of power plants.
従来、火力発電プラントの給水系統中の鉄酸化
物の除去方法としては特公昭47−49482号公報に
示されるように、強磁性体材料からなる粒子と磁
界を発生させるための電気線輪を有する円筒管状
の濾水容器からなる電磁フイルタが公知である。
しかし、電磁フイルタは、濾水容器中の鋼製粒子
に常時磁界を発生させるために容器の外の線輪に
大電流を印加して磁界を生じさせなければならな
い。したがつて、消費電力が大きく経済的長所は
ほとんどない。また、大電流を印加するため容器
が加熱されるので冷却等の付帯装置も必要であ
る。 Conventionally, as shown in Japanese Patent Publication No. 47-49482, a method for removing iron oxides in the water supply system of a thermal power plant uses particles made of ferromagnetic material and an electric wire ring for generating a magnetic field. Electromagnetic filters consisting of a cylindrical and tubular drainage container are known.
However, in order to constantly generate a magnetic field in the steel particles in the drainage container, the electromagnetic filter requires applying a large current to a wire ring outside the container to generate a magnetic field. Therefore, it consumes a lot of power and has little economic advantage. Furthermore, since the container is heated due to the application of a large current, ancillary equipment such as cooling is also required.
又、特開昭52−20475号公報に示されるように
油系統中の鉄分を永久磁石により除去する油浄化
装置が知られている。この装置は容器の底部に永
久磁石を設置し、鉄分を除去する構成であるが、
油出口との関係上油の流れが片寄り、油が磁石部
を通過しないために鉄分除去の効率低下が問題と
なる。 Furthermore, as disclosed in Japanese Patent Application Laid-Open No. 52-20475, an oil purification device is known in which iron content in an oil system is removed using a permanent magnet. This device has a permanent magnet installed at the bottom of the container to remove iron.
Due to the relationship with the oil outlet, the flow of oil is uneven and the oil does not pass through the magnet section, resulting in a reduction in the efficiency of iron removal.
本発明は上記欠点を改善しようとしたもので、
その目的とするところは、火力発電用プラントの
脱気器貯水タンク内に給水系統中の鉄酸化物を除
去する永久磁石を設置し、タンク内の給水整流板
により磁石部の給水通過率を高め、鉄酸化物の除
去率の向上を図ることにある。
The present invention attempts to improve the above drawbacks,
The purpose of this is to install a permanent magnet to remove iron oxides in the water supply system in the deaerator water storage tank of a thermal power generation plant, and to increase the feed water passage rate through the magnet using a water supply rectifying plate inside the tank. The objective is to improve the removal rate of iron oxides.
即ち、本発明の特徴とするところは、脱気器貯
水タンク内に、鉄酸化物を捕集除去する永久磁石
を取付けた鉄酸化物除去装置において、脱気され
た給水を脱気室から貯水タンクに供給する給水管
を設け、この貯水タンク内部には供給された給水
の整流板を取付け、また、貯水タンク内底部には
給水に混入した鉄酸化物を吸着する永久磁石を取
付け、前記整流板の一方の端部と永久磁石を取付
けたタンク底部とで上記給水が流れる狭まい流路
を形成し、この流路を通過した給水を取出す取出
口を貯水タンクに設けた発電用プラントの給水系
統中の鉄酸化物除去装置にある。
That is, the present invention is characterized in that in an iron oxide removal device in which a permanent magnet for collecting and removing iron oxides is installed in a deaerator water storage tank, deaerated feed water is stored from a deaeration chamber. A water supply pipe is provided to supply the water to the tank, and a rectifying plate for the supplied water is installed inside this water storage tank, and a permanent magnet is installed at the bottom of the water storage tank to attract iron oxides mixed in the water supply, and the rectification plate is installed inside the water storage tank. A water supply for a power generation plant in which one end of the plate and the bottom of the tank to which a permanent magnet is attached form a narrow channel through which the water flows, and the water storage tank has an outlet for taking out the water that has passed through this channel. Located in the iron oxide removal equipment in the system.
上記構成により、鉄酸化物を含有する給水を整
流板により常に磁石方向に導くことが可能となる
ため鉄酸化物除去率の向上が図れる。 With the above configuration, it is possible to always guide the feed water containing iron oxide toward the magnet by the rectifying plate, so that the iron oxide removal rate can be improved.
本発明による火力発電プラントの給水系統水中
の鉄酸化物除去装置の実施例を第１図〜第６図に
示す。
Embodiments of the apparatus for removing iron oxides from water in the water supply system of a thermal power plant according to the present invention are shown in FIGS. 1 to 6.
第１図は通常の横置型脱気器の断面図を示した
ものである。横置型脱気器では、貯水タンク１０
の上に脱気室９を設置し、脱気室９には中央にト
レイ室２１、上部にスプレー弁２２、側面には加
熱蒸気入口２３、高圧給水加熱器ドレン入口２４
が設けられている。また、脱気室９と貯水タンク
１０の間には給水流下用降水管２５と均圧管２６
が設けられている。したがつて、脱気室９で、ス
プレー弁２２から流入し、加熱蒸気入口２３から
流入した加熱蒸気により、加熱脱気された給水お
よび高圧給水加熱器ドレン入口２４から流入した
高圧給水加熱器ドレンよりなる給水の全量は、降
水管２５を通つて貯水タンク１０に流下し、貯水
タンク１０内で分配管２７により左右に分散され
た後、給水出口２８を経て、ボイラ給水ポンプ１
２に流入する。 FIG. 1 shows a cross-sectional view of a conventional horizontal deaerator. For horizontal deaerators, water storage tank 10
A deaeration chamber 9 is installed above, and the deaeration chamber 9 has a tray chamber 21 in the center, a spray valve 22 at the top, a heating steam inlet 23 on the side, and a high-pressure feed water heater drain inlet 24.
is provided. In addition, between the deaeration chamber 9 and the water storage tank 10, a downcomer pipe 25 for water supply flow and a pressure equalization pipe 26 are provided.
is provided. Therefore, in the deaeration chamber 9, the heated and deaerated feed water and the high pressure feed water heater drain that flowed in from the high pressure feed water heater drain inlet 24 are heated and deaerated by the heated steam that flows in from the spray valve 22 and from the heated steam inlet 23. The total amount of water supplied flows down to the water storage tank 10 through the downcomer pipe 25, is distributed left and right within the water storage tank 10 by the distribution pipe 27, and then passes through the water supply outlet 28 to the boiler water supply pump 1.
2.
第２，３図は本発明による脱気器貯水クンク内
の永久磁石の設置要領を示したものであり、貯水
タンク１０内には整流板３２が取付けられ、分配
管２７下部に位置するタンク底部には邪魔板３３
および磁石設置板３０を設け、設置板３０にはス
ケール捕集に必要な数の磁石３１が設置される。
脱気器貯水クンク１０に磁石３１を設置する場
合、貯水タンク１０は一般に大形のタンクである
ため、設置場所によつては給水の流動の少ない場
所があり、スケール捕熱効率が非常に悪い場合が
有り得る。磁石３１の数を最小限にとどめ、しか
も、捕集量を最大にする事が脱気器貯水クンク１
０内に磁石３１を設置するポイントであるため、
本発明においては磁石設置板３０上部の貯水中に
整流板３２を設置し、脱気器の脱気室９より分配
管２７を通つて流下してくる給水を必ず、磁石３
１近傍を通過させると共に、磁石３１と給水出口
２８の間に邪魔板３３を設け、磁石設置板３０の
付近の給水流速を極力低くするものである。整流
板３２は図示のように貯水タンク１０の運転水位
（NWL）よりも上部まで配列し、給水が磁石３１
近傍を通過せずに整流板３２の上部をバイパスし
て流れるのを防ぐ構造とした。本構造により給水
は脱気器貯水クンク１０の整流板３２により必ず
磁石３１の近傍を通過する事になりスケールの捕
集効率が向上する。又、北構造では邪魔板３３に
よりタンク底部の流速を低くする事ができるた
め、磁石３１に吸着したスケールの剥離を防止で
きる。 Figures 2 and 3 show how to install a permanent magnet in the deaerator water storage tank according to the present invention. There is a baffle board 33
A magnet installation plate 30 is provided, and a number of magnets 31 required for scale collection are installed on the installation plate 30.
When installing the magnet 31 in the deaerator water storage tank 10, since the water storage tank 10 is generally a large tank, depending on the installation location, there may be places where there is little flow of water supply, and the scale heat capture efficiency may be very poor. is possible. The deaerator water storage unit 1 is to minimize the number of magnets 31 and maximize the collection amount.
Since this is the point where the magnet 31 is installed within 0,
In the present invention, a rectifying plate 32 is installed in the water stored above the magnet installation plate 30, and the water flowing down from the deaeration chamber 9 of the deaerator through the distribution pipe 27 is directed to the magnet 3.
1, and a baffle plate 33 is provided between the magnet 31 and the water supply outlet 28 to make the water supply flow velocity near the magnet installation plate 30 as low as possible. The current plate 32 is arranged above the operating water level (NWL) of the water storage tank 10 as shown in the figure, and the water supply is connected to the magnet 31.
The structure is such that the flow is prevented by bypassing the upper part of the current plate 32 without passing through the vicinity. With this structure, the supplied water always passes near the magnet 31 by the rectifying plate 32 of the deaerator water storage unit 10, improving the scale collection efficiency. In addition, in the north structure, the flow velocity at the bottom of the tank can be lowered by the baffle plate 33, so that peeling off of the scale attracted to the magnet 31 can be prevented.
第４図は永久磁石３１の磁石設置板３０への取
付方法を示したものであり、永久磁石３１は磁石
カバー３４に取付けたブラケツト３５により磁石
設置板３０に取付ける。この場合、設置板３０お
よびカバーカバー３４は非磁性体とする。非磁性
体とすると磁力がそこなわれずに磁石３１を使用
出来る。更に、貯水タンク１０の器外に持ち出し
て磁石３１に捕集されたスケールを除去するため
に磁石３１の取扱いが容易なようにカバー３４に
非磁性体の把持３６を設ける。 FIG. 4 shows a method of attaching the permanent magnet 31 to the magnet installation plate 30. The permanent magnet 31 is attached to the magnet installation plate 30 using a bracket 35 attached to the magnet cover 34. In this case, the installation plate 30 and the cover 34 are made of non-magnetic material. If a non-magnetic material is used, the magnet 31 can be used without damaging the magnetic force. Furthermore, a grip 36 made of a non-magnetic material is provided on the cover 34 to facilitate handling of the magnet 31 in order to take it out of the water storage tank 10 and remove the scale collected on the magnet 31.
又、磁石３１は第５図に示すようにＳ、Ｎ、Ｓ
配列とし、Ａ面のみの片面吸着のものを使用すれ
ば、スケールが磁石全面に吸着することがないの
で、スケール除去が容易になると共に、設置板３
０を非磁性体にする必要がなくなる。 In addition, the magnets 31 are S, N, S as shown in FIG.
If you use a one-sided magnet that has only the A side, scale will not be attracted to the entire surface of the magnet, making it easier to remove scale, and the installation plate 3
There is no need to make 0 a non-magnetic material.
なお、磁石３１は焼結合金であり、一般にそれ
自体の強度が弱く、プラント運転中に破損、飛散
する可能性が有るが前記非磁性体（SUS304等）
により磁石３１をカバー３４すれば、その危険は
なくなる。 The magnet 31 is made of a sintered alloy, which generally has low strength and may be damaged or scattered during plant operation.
If the magnet 31 is covered with a cover 34, this danger will be eliminated.
本発明の他の実施例を第６図に示す。実施例
と異なるところは磁石３１を貯水タンク１０の底
部のみでなく、整流板３２および邪魔板３３にも
設置するものである。これら全てに磁石３１を設
置することにより、整流板３２および邪摩板３３
に添つて流れる給水中のスケールを除去すること
ができるため、実施例に比べて、より高い捕集
効率とすることができる。 Another embodiment of the invention is shown in FIG. The difference from the embodiment is that magnets 31 are installed not only at the bottom of the water storage tank 10 but also at the rectifying plate 32 and the baffle plate 33. By installing magnets 31 in all of these, the rectifying plate 32 and the jamming plate 33
Since the scale in the water supply flowing along with the water can be removed, the collection efficiency can be higher than that in the example.
本発明によれば、脱気器貯水クンク内の給水を
整流板により鉄酸化物を捕集する磁石方向へ導び
くことが可能となり、高効率の除去率を得ること
ができる。
According to the present invention, it is possible to guide the supplied water in the deaerator water tank toward the magnet that collects iron oxides by the rectifying plate, and it is possible to obtain a highly efficient removal rate.
第１図は従来の脱気器構造を示す断面図、第２
図は本発明による脱気器の断面図、第３図は第２
図の−矢視断面図、第４図は磁石設置要領を
示す断面図、第５図は磁石の概略断面図、第６図
は本発明の他の実施例の断面図である。
９……脱気室、１０……脱気器貯水クンク、２
７……分配管、２８……給水出口、３１……磁
石、３２……整流板。
Figure 1 is a sectional view showing the structure of a conventional deaerator;
The figure is a sectional view of a deaerator according to the present invention, and FIG.
FIG. 4 is a cross-sectional view showing how to install the magnet, FIG. 5 is a schematic cross-sectional view of the magnet, and FIG. 6 is a cross-sectional view of another embodiment of the present invention. 9... Deaeration chamber, 10... Deaerator water storage kunk, 2
7... Distribution pipe, 28... Water supply outlet, 31... Magnet, 32... Current plate.
Claims (1)
する永久磁石を取付けた鉄酸化物除去装置におい
て、脱気された給水を脱気室から貯水タンクに供
給する給水管を設け、この貯水タンク内部には供
給された給水の整流板を取付け、また、貯水タン
ク内底部には給水に混入した鉄酸化物を吸着する
永久磁石を取付け、前記整流板の一方の端部と永
久磁石を取付けたタンク底部とで上記給水が流れ
る狭まい流路を形成し、この流路を通過した給水
を取出す取出口を貯水タンクに設けたことを特徴
とする発電用プラントの給水系統中の鉄酸化物除
去装置。 ２ 整流板にも永久磁石を取付けたことを特徴と
する特許請求の範囲第１項記載の発電用プラント
の給水系統中の鉄酸化物除去装置。[Claims] 1. In an iron oxide removal device in which a permanent magnet for collecting and removing iron oxides is installed in a deaerator water storage tank, deaerated water is supplied from the deaeration chamber to the water storage tank. A water supply pipe is provided, a rectifying plate for the supplied water is installed inside this water storage tank, a permanent magnet is installed at the bottom of the water storage tank to adsorb iron oxides mixed in the water supply, and one of the rectifying plates is installed at the bottom of the water storage tank. A power generation plant characterized in that the end portion and the bottom of the tank to which a permanent magnet is attached form a narrow channel through which the water supply flows, and the water storage tank is provided with an outlet for taking out the water supply that has passed through the channel. Equipment for removing iron oxides in water supply systems. 2. An apparatus for removing iron oxides in a water supply system of a power generation plant according to claim 1, characterized in that a permanent magnet is also attached to the current plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15365381A JPS5855086A (en) | 1981-09-30 | 1981-09-30 | Removing device for iron oxide in feed water system of power generation plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15365381A JPS5855086A (en) | 1981-09-30 | 1981-09-30 | Removing device for iron oxide in feed water system of power generation plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5855086A JPS5855086A (en) | 1983-04-01 |
| JPS626874B2 true JPS626874B2 (en) | 1987-02-13 |
Family
ID=15567236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15365381A Granted JPS5855086A (en) | 1981-09-30 | 1981-09-30 | Removing device for iron oxide in feed water system of power generation plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5855086A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63141762U (en) * | 1987-03-09 | 1988-09-19 |
-
1981
- 1981-09-30 JP JP15365381A patent/JPS5855086A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63141762U (en) * | 1987-03-09 | 1988-09-19 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5855086A (en) | 1983-04-01 |
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