JPH0133267Y2 - - Google Patents
Info
- Publication number
- JPH0133267Y2 JPH0133267Y2 JP11340485U JP11340485U JPH0133267Y2 JP H0133267 Y2 JPH0133267 Y2 JP H0133267Y2 JP 11340485 U JP11340485 U JP 11340485U JP 11340485 U JP11340485 U JP 11340485U JP H0133267 Y2 JPH0133267 Y2 JP H0133267Y2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- molten metal
- induction
- electromagnetic pump
- protection tube
- 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
- 229910052751 metal Inorganic materials 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 23
- 230000006698 induction Effects 0.000 claims description 21
- 230000001681 protective effect Effects 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 7
- 230000005674 electromagnetic induction Effects 0.000 claims description 4
- 238000007654 immersion Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000010935 stainless steel Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は溶湯を汲み出す際に用いて好適な浸
漬型電磁ポンプに関する。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an immersion type electromagnetic pump suitable for use in pumping out molten metal.
浸漬型電磁ポンプは円筒状の誘導型電磁ポンプ
であり、溶湯中に本体下部を浸漬し、前記溶湯を
電磁誘導によつて上方へ汲み出すものである。
The immersion-type electromagnetic pump is a cylindrical induction-type electromagnetic pump whose lower part is immersed in molten metal and pumps the molten metal upward by electromagnetic induction.
そして、対象とする溶湯は、比較的低温度にて
溶融するアルミニウム、亜鉛、錫、マグネシウム
およびこれらの合金群が一般的であり、その溶融
温度は300〜800℃程度である。 The target molten metals are generally aluminum, zinc, tin, magnesium, and alloys thereof, which melt at relatively low temperatures, and the melting temperature thereof is about 300 to 800°C.
第２図は、従来の浸漬型電磁ポンプ１の構成を
示す正断面図であり、電磁ポンプ１本体の下部が
溶湯２に浸漬され、電磁誘導によつて汲み上げら
れた溶湯２は出湯樋３から排出されるようになつ
ている。 FIG. 2 is a front cross-sectional view showing the configuration of a conventional immersion type electromagnetic pump 1, in which the lower part of the main body of the electromagnetic pump 1 is immersed in molten metal 2, and the molten metal 2 is pumped up by electromagnetic induction from a tap trough 3. It is beginning to be excreted.
この図において、電磁ポンプ１の中心部には、
円柱体４が設けられ、その外側には軸心を共通に
して、耐火物製円管５、円管５の外周を被うステ
ンレス製の保護管６、中空円筒状のケーシング７
およびケーシング７の外周を被う耐火材８が順次
配設されている。また、保護管６の外周には、例
えば６個の櫛状誘導鉄心９，９…が放射状に配置
され、保護管６の外周に被嵌された環状の誘導コ
イル１０，１０…の外側からこれらの誘導コイル
１０に嵌め込まれている。さらに説明すると、上
記誘導鉄心９は平面扇形の柱状体で、その内周面
には軸方向と直交する凹溝が切られ、この凹溝が
誘導コイル１０に嵌め込まれて前記内周面が保護
管６の外周面に当接している。 In this figure, in the center of the electromagnetic pump 1,
A cylindrical body 4 is provided, and on the outside thereof, with a common axis, a refractory circular tube 5, a stainless steel protective tube 6 covering the outer periphery of the circular tube 5, and a hollow cylindrical casing 7.
A refractory material 8 covering the outer periphery of the casing 7 is sequentially disposed. Further, on the outer periphery of the protection tube 6, for example, six comb-shaped induction cores 9, 9... are arranged radially, and these are inserted from the outside of the annular induction coils 10, 10... fitted on the outer periphery of the protection tube 6. It is fitted into the induction coil 10 of. To explain further, the induction core 9 is a columnar body having a planar sector shape, and a groove perpendicular to the axial direction is cut on the inner circumferential surface of the induction core 9, and the induction coil 10 is fitted into the groove to protect the inner circumferential surface. It is in contact with the outer peripheral surface of the tube 6.
次に、円柱体４と円管５との間には、耐火物製
の固定板１１が90゜間隔で設けられ、円柱体４と
円管５の軸心を合わせている。また、円管５と出
湯樋３とは断面コ字状の円環状連結具１２によつ
て連結されている。なお、円柱体４は、耐火物の
みの場合と、内部に内部コアと呼ばれる磁路形成
に必要な鋼棒が設けられる場合とがある。 Next, fixing plates 11 made of refractory material are provided between the cylindrical body 4 and the circular tube 5 at 90° intervals, and the axes of the cylindrical body 4 and the circular tube 5 are aligned. Further, the circular pipe 5 and the tap water gutter 3 are connected by an annular connector 12 having a U-shaped cross section. The cylindrical body 4 may be made of only refractory material, or may be provided with a steel rod called an internal core necessary for forming a magnetic path.
このような構成において、誘導コイル１０…が
所定の位相差をもつて励磁されると、溶湯２は円
柱体４と円管５との間に形成された円環状の溶湯
汲み上げ通路１３を通つて汲み上げられ、出湯樋
３から排出される。 In such a configuration, when the induction coils 10 are excited with a predetermined phase difference, the molten metal 2 passes through the annular molten metal drawing passage 13 formed between the cylindrical body 4 and the circular tube 5. The water is pumped up and discharged from the outlet gutter 3.
ところで、櫛状誘導鉄心９を放射状に配置する
のに必要不可欠な保護管６は、一般に、オーステ
ナイト系ステンレス管（非磁性材料）によつて構
成されていた。その理由は、価格が安価であり、
また比較的強度があり、さらに融点が高いからで
ある。しかしながら、電磁誘導の原理を利用して
いるため、誘導コイル１０に通電すると、この誘
導コイル１０の近傍に存在するステンレス製の保
護管６に誘導（うず）電流が発生し、ジユール熱
が発生してしまう。また、誘導コイル１０自体も
発熱しており、空却によつて冷却が施されている
ものの、すぐ近傍の保護管６に誘導コイル１０の
熱が伝導されてしまう。この結果、保護管６の表
面温度が上昇し、これに加えて、溶湯２の熱が耐
火物製円管５を通じて伝導してくるので、保護管
６の表面温度はさらに高温度となつてしまう。
By the way, the protection tube 6, which is essential for radially arranging the comb-shaped induction core 9, is generally made of an austenitic stainless steel tube (non-magnetic material). The reason is that the price is low and
It is also relatively strong and has a high melting point. However, since the principle of electromagnetic induction is used, when the induction coil 10 is energized, an induced (eddy) current is generated in the stainless steel protection tube 6 located near the induction coil 10, and Joule heat is generated. It ends up. Further, the induction coil 10 itself generates heat, and although it is cooled by air cooling, the heat of the induction coil 10 is conducted to the protection tube 6 in the immediate vicinity. As a result, the surface temperature of the protection tube 6 increases, and in addition to this, the heat of the molten metal 2 is conducted through the refractory circular tube 5, so the surface temperature of the protection tube 6 becomes even higher. .
ここで、ステンレスの熱膨張係数αはα＝11×
10-6／℃であり、通常使用される一般構造用圧延
鋼材よりも大である。したがつて、保護管６は他
の部材よりも膨張する度合が大であり、上述した
ような電磁ポンプの構成から言つて、保護管６が
膨張した場合の逃げがなく、また逃げがあつたと
しても、長時間の放置に伴つて各部に歪が生じる
と言う問題が起こり、さらには耐火物製円管５を
圧迫しかねない等の問題点がある。 Here, the thermal expansion coefficient α of stainless steel is α=11×
10 -6 /℃, which is higher than that of commonly used general structural rolled steel materials. Therefore, the protection tube 6 expands to a greater degree than other members, and given the configuration of the electromagnetic pump as described above, there is no escape when the protection tube 6 expands, and there is no escape. Even so, there is a problem that distortion occurs in various parts when left for a long time, and furthermore, there is a problem that the refractory circular tube 5 may be compressed.
また、別の観点から見ると、耐火物製円管５は
消耗品であり、溶湯２によつて摩耗、亀裂が生
じ、この亀裂から溶湯２が内部に侵入して保護管
６に達する場合が考えられる。そしてこの状態が
長時間続いた場合、溶湯２が800℃程度のアルミ
ニウムであると、ステンレス製の保護管８は部分
的に溶融されて穴があいてしまい、この穴から溶
湯２が侵入し、誘導コイル１０を破損してしまう
恐れがあつた。 In addition, from another perspective, the refractory circular tube 5 is a consumable item, and the molten metal 2 causes wear and cracks, and the molten metal 2 may penetrate inside through the cracks and reach the protective tube 6. Conceivable. If this state continues for a long time, and the molten metal 2 is aluminum at about 800°C, the stainless steel protection tube 8 will be partially melted and a hole will be formed, and the molten metal 2 will enter through this hole. There was a risk that the induction coil 10 would be damaged.
この考案は、上述した事情に鑑み、上記保護管
による電力損失を無くして効率の向上を図り、保
護管の熱膨張に伴なう各部の歪を小とし、かつ溶
湯が電磁ポンプ内へ容易に侵入してしまうことを
防止した電磁ポンプを提供することを目的として
いる。 In view of the above-mentioned circumstances, this idea was developed to improve efficiency by eliminating power loss caused by the protection tube, to reduce distortion of various parts due to thermal expansion of the protection tube, and to allow molten metal to easily flow into the electromagnetic pump. The purpose of the present invention is to provide an electromagnetic pump that prevents intrusion.
この考案は、保護管を従来のステンレス管に代
えてセラミツクス管によつて構成したことを特徴
としている。
This invention is characterized in that the protective tube is constructed from a ceramic tube instead of the conventional stainless steel tube.
保護管をセラミツクス管によつて構成すること
により、保護管にうず電流が発生しなくなり、ま
た誘導コイルからの熱及び溶湯からの熱によつて
保護管自体の温度が上昇するが、セラミツクスは
ステンレスより熱膨張係数が低く、高温下におけ
る強度が安定しているため、温度上昇に伴なう弊
害は発生しなくなる。さらに、セラミツクス製の
保護管は例えば800℃程度のアルミニウム溶湯で
あれば損傷が生じることがなく、溶湯の侵入を防
ぐことができる。
By configuring the protection tube with a ceramic tube, eddy current will not occur in the protection tube, and the temperature of the protection tube itself will rise due to the heat from the induction coil and the heat from the molten metal. Since the coefficient of thermal expansion is lower and the strength is stable at high temperatures, adverse effects associated with temperature increases will no longer occur. Furthermore, the ceramic protective tube will not be damaged by molten aluminum at about 800°C, and can prevent molten metal from entering.
以下、図面を参照して本考案の実施例について
説明する。
Embodiments of the present invention will be described below with reference to the drawings.
第１図は本考案の一実施例による電磁ポンプ２
１の構成を示す図であり、第２図の各部に対応す
る部分には同一の符号を付し、その説明を省略す
る。 Figure 1 shows an electromagnetic pump 2 according to an embodiment of the present invention.
1, parts corresponding to those in FIG. 2 are given the same reference numerals, and their explanations will be omitted.
本実施例が第２図に示す従来の電磁ポンプ１と
異なる点は、ステンレス製の保護管６に代えてセ
ラミツクス製の保護管２０を設けた点である。こ
の保護管２０の下端部には外フランジ２０ａが一
体に形成されている。 This embodiment differs from the conventional electromagnetic pump 1 shown in FIG. 2 in that a protection tube 20 made of ceramic is provided in place of the protection tube 6 made of stainless steel. An outer flange 20a is integrally formed at the lower end of the protective tube 20.
以上の構成においてセラミツクスの材質として
窒化珪素Si3N4を用いれば、その熱膨張係数αは
α≒２×10-6／℃程度であり、ステンレスの熱膨
張係数の1/5程度であるから熱膨張を小とするこ
とができる。また、セラミツクス材は磁束が通過
してもうず電流が発生せず、したがつて発熱が生
じない。また、近年のセラミツクス製部材の製造
技術の進歩により、比較的薄い肉厚（１〜３mm）
で、かつ強度が充分に得られる円管状部材が製造
可能となつており、保護管２０の肉厚を薄くする
ことができ、これにより櫛状誘導鉄心９の内周面
から溶湯２までの距離を若干短縮し、誘導効率を
向上させることができる。さらに、保護管２０の
下端部に外フランジ２０ａを設けることにより、
万一耐火物製円管５の下端部に亀裂が生じた場合
においても電磁ポンプ内部へ溶湯２が容易に侵入
することを防止することができる。 If silicon nitride (Si 3 N 4 ) is used as the ceramic material in the above configuration, its coefficient of thermal expansion α is approximately 2 × 10 -6 /°C, which is approximately 1/5 of that of stainless steel. Thermal expansion can be reduced. Furthermore, ceramic materials do not generate eddy current even when magnetic flux passes through them, and therefore do not generate heat. In addition, due to recent advances in manufacturing technology for ceramic parts, relatively thin wall thickness (1 to 3 mm) has been achieved.
It is now possible to manufacture a cylindrical member with sufficient strength, and the wall thickness of the protective tube 20 can be made thinner, thereby reducing the distance from the inner circumferential surface of the comb-shaped induction core 9 to the molten metal 2. can be slightly shortened and the guidance efficiency can be improved. Furthermore, by providing an outer flange 20a at the lower end of the protection tube 20,
Even if a crack should occur in the lower end of the refractory circular tube 5, the molten metal 2 can be prevented from easily entering the electromagnetic pump.
以上説明したように、この考案は保護管をセラ
ミツクスによつて構成したので、保護管の熱膨
張を小とし、保護管の熱膨張に伴なつて各部に発
生する歪を小とすることができ、これにより高温
下においても安定した電磁ポンプを構成すること
ができ、保護管の肉厚を薄くすることができ、
これにより誘導効率を向上させることができ、
うず電流損がなく効率を向上させることができる
効果が得られ、さらに保護管の下端部にフランジ
を形成した場合は、溶湯が電磁ポンプ内へ容易に
侵入することを防止することができ、これによつ
て安全な操業をなすことができる。
As explained above, in this invention, the protection tube is made of ceramics, so the thermal expansion of the protection tube can be reduced, and the strain that occurs in each part due to the thermal expansion of the protection tube can be reduced. As a result, it is possible to construct an electromagnetic pump that is stable even under high temperatures, and the thickness of the protective tube can be made thinner.
This can improve the induction efficiency,
This has the effect of improving efficiency without eddy current loss, and if a flange is formed at the lower end of the protection tube, it is possible to prevent molten metal from easily entering the electromagnetic pump. This allows for safe operation.
第１図は本考案の一実施例による浸漬型電磁ポ
ンプの構成を示す正断面図、第２図は従来の浸漬
型電磁ポンプの構成を示す正断面図である。
２……溶湯、４……円柱体、５……耐火物製円
管、７……ケーシング、９……櫛状誘導鉄心、１
０……誘導コイル、１３……溶湯汲み上げ通路、
２０……保護管、２０ａ……外フランジ。
FIG. 1 is a front cross-sectional view showing the structure of a submerged electromagnetic pump according to an embodiment of the present invention, and FIG. 2 is a front cross-sectional view showing the structure of a conventional submerged electromagnetic pump. 2... Molten metal, 4... Cylindrical body, 5... Refractory circular tube, 7... Casing, 9... Comb-shaped induction core, 1
0... Induction coil, 13... Molten metal pumping passage,
20...Protection tube, 20a...Outer flange.
Claims (1)
た円柱体、耐火物製円管、保護管および中空円
柱状のケーシングと、前記保護管の外周に被嵌
された環状の誘導コイルと、この誘導コイルを
支持する櫛状の誘導鉄心とからなり、前記円柱
体と円管との間に形成された溶湯汲み上げ通路
を介して電磁誘導により溶湯を汲み上げる浸漬
型電磁ポンプにおいて、前記保護管をセラミツ
クスによつて構成したことを特徴とする浸漬型
電磁ポンプ。 (2) 前記保護管の下端部にフランジを形成したこ
とを特徴とする実用新案登録請求の範囲第１項
記載の浸漬型電磁ポンプ。[Claims for Utility Model Registration] (1) A cylindrical body, a refractory circular tube, a protective tube, and a hollow cylindrical casing arranged concentrically from the inside to the outside, and the outer periphery of the protective tube. It consists of a fitted annular induction coil and a comb-shaped induction core that supports the induction coil, and pumps molten metal by electromagnetic induction through a molten metal pumping passage formed between the cylindrical body and the circular pipe. 1. An immersion type electromagnetic pump, characterized in that the protection tube is made of ceramics. (2) The immersion type electromagnetic pump according to claim 1, wherein a flange is formed at the lower end of the protective tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11340485U JPH0133267Y2 (en) | 1985-07-24 | 1985-07-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11340485U JPH0133267Y2 (en) | 1985-07-24 | 1985-07-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6225056U JPS6225056U (en) | 1987-02-16 |
| JPH0133267Y2 true JPH0133267Y2 (en) | 1989-10-09 |
Family
ID=30995174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11340485U Expired JPH0133267Y2 (en) | 1985-07-24 | 1985-07-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0133267Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02131813U (en) * | 1990-01-25 | 1990-11-01 | ||
| JPH07108137B2 (en) * | 1991-11-01 | 1995-11-22 | ヤンマー農機株式会社 | Fertilizer application for rice transplanter |
| JP6518524B2 (en) * | 2015-06-15 | 2019-05-22 | 助川電気工業株式会社 | Electromagnetic pump for molten metal water heater |
-
1985
- 1985-07-24 JP JP11340485U patent/JPH0133267Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6225056U (en) | 1987-02-16 |
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