JPH0452707B2 - - Google Patents
Info
- Publication number
- JPH0452707B2 JPH0452707B2 JP2825886A JP2825886A JPH0452707B2 JP H0452707 B2 JPH0452707 B2 JP H0452707B2 JP 2825886 A JP2825886 A JP 2825886A JP 2825886 A JP2825886 A JP 2825886A JP H0452707 B2 JPH0452707 B2 JP H0452707B2
- Authority
- JP
- Japan
- Prior art keywords
- flow path
- annular flow
- annular
- electromagnetic pump
- linear induction
- 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
- 230000006698 induction Effects 0.000 claims description 20
- 239000000696 magnetic material Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 description 11
- 230000002093 peripheral effect Effects 0.000 description 6
- 239000004744 fabric Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、溶融金属等の導電性液体の搬送に
使用されるリニア誘導電磁ポンプに関し、特に、
環状流路を持ち、かつ、この環状流路の内周と外
周側にそれぞれステータを配置した二重誘導式環
状流路形リニア誘導電磁ポンプに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a linear induction electromagnetic pump used for conveying conductive liquid such as molten metal, and in particular,
The present invention relates to a double induction annular flow path type linear induction electromagnetic pump having an annular flow path and having stators arranged on the inner and outer periphery sides of the annular flow path.
一般のリニア誘導電磁ポンプは、断面円形の流
路を持ち、この外周側にステータを、流路の中心
に磁性体製のコアを配置したものである。この種
のリニア誘導電磁ポンプでは、流路の径を大きく
とり、流路の断面積を広くすると、流路の中心に
磁界が浸透しにくゝなる。このため、広い流路断
面積を得ることが困難であり、大量の液体の搬送
には不向きである。
A general linear induction electromagnetic pump has a flow path with a circular cross section, a stator is placed on the outer periphery of the flow path, and a core made of a magnetic material is arranged at the center of the flow path. In this type of linear induction electromagnetic pump, by increasing the diameter of the flow path and widening the cross-sectional area of the flow path, it becomes difficult for the magnetic field to penetrate into the center of the flow path. For this reason, it is difficult to obtain a wide cross-sectional area of the flow path, making it unsuitable for conveying a large amount of liquid.
そこで、比較的大量の液体の搬送には、第４図
で示すような、環状流路３を使用したリニア誘導
電磁ポンプが使用される。これは、二重のパイプ
１，２の間に環状流路３を形成し、環状流路３の
外周側にステータ５，５……を配置したものであ
る。 Therefore, to convey a relatively large amount of liquid, a linear induction electromagnetic pump using an annular flow path 3 as shown in FIG. 4 is used. In this, an annular flow path 3 is formed between double pipes 1 and 2, and stators 5, 5, . . . are arranged on the outer peripheral side of the annular flow path 3.
さらに、この形式の電磁ポンプでは、流路の内
側にも或る程度のスペースが得られることから、
流路の内周側にもステータ４，４……を配置す
る、いわゆる二重誘導方式の電磁ポンプが提案さ
れている。この方式では、環状流路３の内部にま
で磁界を浸透させやすいため、環状流路３をそれ
だけ厚くすることができる。従つて、環状流路３
の外径を大きくせずに、流路断面積を広くとるこ
とができ、小型化しやすい利点がある。 Furthermore, with this type of electromagnetic pump, a certain amount of space is available inside the flow path, so
A so-called double induction type electromagnetic pump has been proposed in which stators 4, 4, . . . are arranged also on the inner peripheral side of the flow path. In this method, the magnetic field can easily penetrate into the annular flow path 3, so that the annular flow path 3 can be made thicker. Therefore, the annular flow path 3
This has the advantage that the cross-sectional area of the flow path can be made wide without increasing the outer diameter of the tube, making it easy to downsize.
リニア誘導電磁ポンプにおいて、導体であると
ころの流路の中の液体は、水力学的な損失の他、
渦電流による電気的な損失（オーミツクロス）を
受ける。このオーミツクロスは、液体の流速が遅
い程大きく、速い程小さくなる。
In a linear induction electromagnetic pump, the liquid in the flow path, which is a conductor, suffers from hydraulic losses as well as
Subject to electrical loss (Omitsu cross) due to eddy currents. The slower the flow rate of the liquid, the larger the omitsu cloth becomes, and the faster the flow rate of the liquid, the smaller the omitsu cloth becomes.
上記環状流路３の厚みが増した場合、これによ
つて水力学的な損失が小さくなり、全損失に占め
る上記オーミツクロクの割合が相対的に大きくな
る。この場合、環状流路３を流れる液体の流量Ｑ
と、電磁ポンプの吐出圧力Ｈの関係（以下、「Ｑ
−Ｈ特性」という。）を示すＱ−Ｈ特性曲線は、
第５図や第６図で示すように、流量Ｑを横軸にと
り、吐出圧力Ｈを縦軸にとると、上に凸になる。
即ち、オーミツクロスのため、流体の流速ｖが遅
いと、電磁ポンプの吐出圧力Ｈが低く、流速ｖが
速くなるに従つて、吐出圧力Ｈが高くなる。さら
に流速ｖが速くなると、全誘導電流ｅが小さくな
るので、ポンプの性能が低下し、吐出圧力Ｈが低
くなる。 When the thickness of the annular flow path 3 increases, the hydraulic loss decreases, and the proportion of the omitlock in the total loss becomes relatively large. In this case, the flow rate Q of the liquid flowing through the annular channel 3
and the discharge pressure H of the electromagnetic pump (hereinafter referred to as "Q")
-H characteristics. ), the Q-H characteristic curve is
As shown in FIGS. 5 and 6, when the flow rate Q is plotted on the horizontal axis and the discharge pressure H is plotted on the vertical axis, it becomes convex upward.
That is, due to the omitsu cloth, when the flow rate v of the fluid is slow, the discharge pressure H of the electromagnetic pump is low, and as the flow rate v becomes faster, the discharge pressure H increases. As the flow velocity v further increases, the total induced current e becomes smaller, so the performance of the pump decreases and the discharge pressure H becomes lower.
このような流量Ｑと吐出圧力Ｈの関係のもとで
は、液体の流量Ｑ、即ち、流速ｖが変動する何等
かの原因があると、環状流路３の水力学的な圧力
−損失特性に変動が生じる。このため、滑らかな
運転ができず、流量制御が困難になると共に、い
わゆるウオーターハンマー現象（水撃現象）によ
るトラブルの発生原因となる。 Under such a relationship between the flow rate Q and the discharge pressure H, if there is any cause for fluctuations in the liquid flow rate Q, that is, the flow velocity v, the hydraulic pressure-loss characteristics of the annular flow path 3 will change. Fluctuations occur. For this reason, smooth operation is not possible, flow rate control becomes difficult, and troubles due to the so-called water hammer phenomenon occur.
例えば、環状流路３の中でのキヤビテーシヨン
の発生や、その中で異物が動揺することによつ
て、流量がQ1とQ2との間で変動すると、同じ吐
出圧力ｈのもとで、圧力−損失特性が第５図にお
いて、n1とn2で示すように変動する。また、第６
図で示すように、液体の供給側での液面h1，2の変
動等によつても、圧力−損失特性の変動がもたら
される。 For example, if the flow rate fluctuates between Q 1 and Q 2 due to the occurrence of cavitation in the annular flow path 3 or the movement of foreign matter therein, under the same discharge pressure h, The pressure-loss characteristics vary as shown by n 1 and n 2 in FIG. Also, the 6th
As shown in the figure, variations in the liquid levels h 1 and 2 on the liquid supply side also cause variations in the pressure-loss characteristics.
この発明は、従来の二重誘導式環状流路形リニ
ア誘導電磁ポンプにおける上記の問題を解決する
ためなされたもので、適当なＱ−Ｈ特性が得られ
る環状流路を持つた二重誘導式環状流路形リニア
誘導電磁ポンプを提供することを目的とする。 This invention was made in order to solve the above-mentioned problems in the conventional dual induction annular flow path type linear induction electromagnetic pump. An object of the present invention is to provide an annular flow path type linear induction electromagnetic pump.
以下、この発明の構成を第１図と第２図の符号
を引用しながら説明すると、二重のパイプ１１，
１２の間に環状流路１３を形成し、この環状流路
１３の内周側と外周側にそれぞれステータ１４，
１４……，１５，１５……を配置する。さらに、
上記パイプ１１，１２の間の環状流路１３の中
に、磁性体からなるパイプ状のコア１６を挿入
し、これによつて、環状流路１３を内側の内周側
流路１３ａと外側の外周側流路１３ｂとい分割す
る。
Hereinafter, the structure of the present invention will be explained while referring to the reference numerals in FIGS. 1 and 2. The double pipe 11,
An annular flow path 13 is formed between the annular flow paths 12 and stators 14 and 14 on the inner and outer circumferential sides of the annular flow path 13, respectively.
14..., 15, 15... are arranged. moreover,
A pipe-shaped core 16 made of a magnetic material is inserted into the annular flow path 13 between the pipes 11 and 12, thereby dividing the annular flow path 13 between the inner circumferential flow path 13a and the outer circumferential flow path 13a. The outer circumferential flow path 13b is divided into two.
この発明による二重誘導式環状流路形リニア誘
導電磁ポンプでは、環状流路１３がコア１６によ
つて内周側流路１３ａと外周側流路１３ｂとに分
割されるため、それぞれの流路１３ａ，１３ｂの
厚みは、環状流路１３全体の約半分ずつとなる。
従つて、環状流路１３の中の全損失に占める流体
のオーミツクロスが相対的に小さくなり、上に凸
になるＱ−Ｈ特性曲線が形成されにくゝなる。
In the dual-induction annular flow path linear induction electromagnetic pump according to the present invention, the annular flow path 13 is divided by the core 16 into an inner flow path 13a and an outer flow path 13b, so that each flow path is The thickness of each of 13a and 13b is about half of the entire annular flow path 13.
Therefore, the amount of fluid loss that accounts for the total loss in the annular flow path 13 becomes relatively small, making it difficult to form an upwardly convex Q-H characteristic curve.
例えば、第３図は内周側流路１３ａと外周側流
路１３ｂとの断面積を等しくしたときのＱ−Ｈ特
性曲線の一例を示したものである。内周側流路１
３ａと外周側流路１３ｂのそれぞれのＱ−Ｈ特性
曲線は、点線で示すような曲線となる。にれによ
つて、環状流路１３全体では、上記両流路１３
ａ，１３ｂの流量Ｑを合計した実線のようなＱ−
Ｈ特性曲線が得られる。 For example, FIG. 3 shows an example of a Q-H characteristic curve when the cross-sectional areas of the inner circumference side flow path 13a and the outer circumference side flow path 13b are made equal. Inner circumference side flow path 1
The respective QH characteristic curves of the flow path 3a and the outer circumferential flow path 13b are curves as shown by dotted lines. Due to the separation, in the entire annular flow path 13, both of the flow paths 13
Q- as shown by the solid line which is the sum of the flow rates Q of a and 13b.
An H characteristic curve is obtained.
また、コア１６は、磁性体製であるところか
ら、内周側流路１３ａと外周側流路１３ｂとの間
に磁気回路が形成され、これら流路１３ａ，１３
ｂを流れる流体に対して、それぞれほゞ直交する
磁界形成される。 Further, since the core 16 is made of a magnetic material, a magnetic circuit is formed between the inner circumference side flow path 13a and the outer circumference side flow path 13b, and these flow paths 13a, 13
A magnetic field is formed that is substantially perpendicular to the fluid flowing through the b.
次に、第１図〜第３図を参照しながら、この発
明の実施例について説明する。
Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 3.
径の異なる二本のパイプ１１，１２が同心状に
配置され、この間に環状流路１３が形成されてい
る。これら２本のパイプ１１，１２の間に、磁性
体からなるパイプ状のコア１６が挿入され、これ
が図示されてないスペーサによつて、環状流路１
３の中に固定されている。このコア１６は、パイ
プ１１と１２の中間の径を有するもので、環状流
路１３を内周側流路１３ａと外周側流路１３ｂと
に２分している。なお、コア１６は、必要に応じ
て環状流路１３の中に多重に挿入することもでき
る。 Two pipes 11 and 12 having different diameters are arranged concentrically, and an annular flow path 13 is formed between them. A pipe-shaped core 16 made of a magnetic material is inserted between these two pipes 11 and 12, and this is connected to the annular flow path 1 by a spacer (not shown).
It is fixed in 3. The core 16 has a diameter intermediate between the pipes 11 and 12, and divides the annular flow path 13 into an inner flow path 13a and an outer flow path 13b. Note that the core 16 can be inserted into the annular flow path 13 multiple times as necessary.
内側のパイプ１１の内周側と外側のパイプ１２
の外周側とにそれぞれステータ１４，１４……，
１５，１５……が配置されている。これらのステ
ータ１４，１４……，１５，１５……は、ステー
タコア１７，１７……，１８，１８……と、これ
らに巻装されたステータコイル１９，１９……，
２０，２０……とからなる。ステータコイル１
９，１９，……，２０，２０……には、環状流路
１３の長手方向にわたつて順次位相がずれた電流
が流される。また、環状流路１３を挟んで対向す
る内周側のステータコイル１９，１９……と外周
側のステータコイル２０，２０……には、互いに
同位相か、または、180°位相がずれた電流が流さ
れる。 The inner peripheral side of the inner pipe 11 and the outer pipe 12
stators 14, 14..., respectively, on the outer peripheral side of the
15, 15... are arranged. These stators 14, 14..., 15, 15... have stator cores 17, 17..., 18, 18... and stator coils 19, 19..., wound around them.
It consists of 20, 20... Stator coil 1
9, 19, . . . , 20, 20 . In addition, the stator coils 19, 19, . is washed away.
以上説明した通り、この発明によれば、環状流
路１３を、同じ流路断面積を有する同径の環状流
路１３に比べて、約半分の厚みを持つた内周側流
路１３ａと外周側流路１３ｂに分けることができ
る。このため、液体の流量Ｑと吐出圧力Ｈとにつ
いて、望ましい関係が得られる。即ち、流量Ｑが
定まれば、一律に吐出圧力Ｈが定まるという関係
が得られることから、環状流路１３の圧力損失の
変動等に伴う流量Ｑの急激な変動が生じない。
As explained above, according to the present invention, the annular flow path 13 has an inner circumferential flow path 13a and an outer circumference having a thickness that is approximately half that of the annular flow path 13 having the same cross-sectional area and the same diameter. It can be divided into a side flow path 13b. Therefore, a desirable relationship can be obtained between the liquid flow rate Q and the discharge pressure H. That is, since a relationship is obtained in which the discharge pressure H is uniformly determined when the flow rate Q is determined, rapid fluctuations in the flow rate Q due to fluctuations in the pressure loss of the annular flow path 13, etc. do not occur.
また、コア１６によつて、内周側のステータ１
４，１４……と、外周側のステータ１５，１５…
…との間に磁気回路が形成され、内周側流路１３
ａと外周側流路１３ｂを通過する流体の移動方向
に対してほゞ直交する磁界が形成できる。これに
よつて、効率の良いポンプが得られる。 In addition, the core 16 allows the stator 1 on the inner circumferential side to
4, 14... and stators 15, 15... on the outer peripheral side.
A magnetic circuit is formed between the inner circumference side flow path 13
A magnetic field can be formed that is substantially perpendicular to the moving direction of the fluid passing through the outer circumferential flow path 13b. This results in a highly efficient pump.
第１図は、この発明の実施例を示す二重誘導式
環状流路形リニア誘導電磁ポンプの一部半断面斜
視図、第２図は、第１図のＡ部拡大図、第３図
は、上記二重誘導式環状流路形リニア誘導電磁ポ
ンプの流量−吐出圧力特性を示すグラフ、第４図
は、二重誘導式環状流路形リニア誘導電磁ポンプ
の従来例を示す一部半断面斜視図、第５図と第６
図は、同二重誘導式環状流路形リニア誘導電磁ポ
ンプの流量と吐出圧力との関係を示すグラフであ
る。
１３……環状流路、１３ａ……内周側流路、１
３ｂ……外周側流路、１４，１５……ステータ、
１６……コア。
Fig. 1 is a partial half-sectional perspective view of a dual induction annular flow path type linear induction electromagnetic pump showing an embodiment of the present invention, Fig. 2 is an enlarged view of section A in Fig. 1, and Fig. 3 is , a graph showing the flow rate-discharge pressure characteristics of the above-mentioned double-induction annular flow-type linear induction electromagnetic pump; FIG. Perspective views, Figures 5 and 6
The figure is a graph showing the relationship between the flow rate and discharge pressure of the double induction annular flow path type linear induction electromagnetic pump. 13...Annular flow path, 13a...Inner peripheral side flow path, 1
3b... Outer circumference side flow path, 14, 15... Stator,
16...Core.
Claims (1)
テータ１４，１４……，１５，１５……を配置し
た二重誘導式環状流路形リニア誘導電磁ポンプに
おいて、環状流路１３の中に磁性体からなるパイ
プ状のコア１６を挿入し、同コア１６によつて、
環状流路１３を、内側の内周側流路１３ａと外側
の外周側流路１３ｂとに分割してなることを特徴
とする二重誘導式環状流路形リニア誘導電磁ポン
プ。1. In a double-induction annular flow path type linear induction electromagnetic pump in which stators 14, 14..., 15, 15... are arranged on the inner circumference side and the outer circumference side of the annular flow path 13, respectively, A pipe-shaped core 16 made of magnetic material is inserted, and by the core 16,
A double induction annular flow path type linear induction electromagnetic pump characterized in that an annular flow path 13 is divided into an inner inner flow path 13a and an outer outer flow path 13b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2825886A JPS62189969A (en) | 1986-02-12 | 1986-02-12 | Double induction type ring passage-shaped linear induction electromagnetic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2825886A JPS62189969A (en) | 1986-02-12 | 1986-02-12 | Double induction type ring passage-shaped linear induction electromagnetic pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62189969A JPS62189969A (en) | 1987-08-19 |
| JPH0452707B2 true JPH0452707B2 (en) | 1992-08-24 |
Family
ID=12243541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2825886A Granted JPS62189969A (en) | 1986-02-12 | 1986-02-12 | Double induction type ring passage-shaped linear induction electromagnetic pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62189969A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62217853A (en) * | 1986-03-19 | 1987-09-25 | Toshiba Corp | Electromagnetic pump |
| JP5851908B2 (en) * | 2012-03-28 | 2016-02-03 | 三菱重工メカトロシステムズ株式会社 | Electromagnetic pump and quench tank and liquid metal loop |
-
1986
- 1986-02-12 JP JP2825886A patent/JPS62189969A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62189969A (en) | 1987-08-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |