JPS6324746B2 - - Google Patents
Info
- Publication number
- JPS6324746B2 JPS6324746B2 JP56105555A JP10555581A JPS6324746B2 JP S6324746 B2 JPS6324746 B2 JP S6324746B2 JP 56105555 A JP56105555 A JP 56105555A JP 10555581 A JP10555581 A JP 10555581A JP S6324746 B2 JPS6324746 B2 JP S6324746B2
- Authority
- JP
- Japan
- Prior art keywords
- fluid
- cylindrical cavity
- magnetic
- magnetic field
- particles
- 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
- 239000012530 fluid Substances 0.000 claims description 23
- 238000000926 separation method Methods 0.000 claims description 5
- 239000006247 magnetic powder Substances 0.000 claims description 4
- 239000006249 magnetic particle Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 7
- 239000002826 coolant Substances 0.000 description 4
- 230000002285 radioactive effect Effects 0.000 description 4
- 239000003517 fume Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Description
【発明の詳細な説明】
本発明はガス、ヒユーム、水等の流体に混入し
ている磁性粉粒体を流体から分離させる装置に関
するもので、例えば、原子力プラントの１次、２
次冷却水系の配管等の冷却材中に分散懸濁してい
る放射性を帯びたクラウド（CRUD）粒子を流
体より分離し、粒子を１個所に集中化するのに適
した装置に係わるものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for separating magnetic powder mixed in a fluid such as gas, fume, water, etc., from the fluid.
This relates to a device suitable for separating radioactive cloud (CRUD) particles dispersed and suspended in the coolant of piping of a sub-cooling water system from the fluid and concentrating the particles in one place.
使用中の原子力プラントの冷却材中には燃料棒
等から生成される放射能を帯びたクラウド粒子が
分散懸濁していて、冷却材と共に流動している。
このクラウド粒子はマグネタイト（Fe3O4）等で
大半が構成されている。 Radioactive cloud particles generated from fuel rods and the like are dispersed and suspended in the coolant of nuclear power plants in use, and flow together with the coolant.
Most of these cloud particles are composed of magnetite (Fe 3 O 4 ) and the like.
また使い古した原子力プラントを壊すときに
は、放射性を帯びた煙霧即ちヒユームが発生す
る。 Also, when old nuclear power plants are demolished, radioactive fumes, or fumes, are generated.
従来は、原子力プラントの稼動日数が少ないこ
ともあつて、前記クラウド粒子はほとんど無視さ
れ、それの除去は行われていない。しかし稼動時
間が長くなつてくると、その発生量は膨大となる
ことは明らかであり、従つて機器の保護、定期検
査、補修時等における作業員の放射線被爆量の増
大が問題にされるであろう。逆に言えば、クラウ
ド粒子を除去すれば、作業員の放射線被爆量の低
減を図ることができると共に、プリント全体の放
射線低減および冷却材の浄化再利用を図ることが
できるであろう。 Conventionally, the cloud particles have been largely ignored and their removal has not been carried out, partly because nuclear power plants operate for only a short period of time. However, it is clear that the amount of radiation generated increases as the operating time increases, and therefore the increased radiation exposure of workers during equipment protection, periodic inspections, repairs, etc. becomes a problem. Probably. Conversely, removing cloud particles would reduce radiation exposure to workers, reduce radiation throughout the print, and purify and reuse the coolant.
したがつて本発明の一般的な目的は、流体中に
混入している磁性粉粒体を分離する装置を提供す
ることにある。 SUMMARY OF THE INVENTION Accordingly, it is a general object of the present invention to provide an apparatus for separating magnetic particles contained in a fluid.
さらに本発明の目的は、小型でかつ分離効率の
高い磁性粉粒体の分離装置を提供することにあ
る。 A further object of the present invention is to provide a magnetic powder separation device that is small in size and has high separation efficiency.
本発明は、軸心を縦にした円筒形空胴を有する
ハウジングを含み、該円筒形空胴内に流体が周方
向に流通するように構成し、しかもその周方向に
流れる流体に対し、直角にしかも下向きに進行磁
界を印加するようにしたことに基いている。 The present invention includes a housing having a cylindrical cavity with a vertical axis, and is configured such that fluid flows in the circumferential direction within the cylindrical cavity, and is perpendicular to the fluid flowing in the circumferential direction. Moreover, it is based on the fact that a downward traveling magnetic field is applied.
本発明について図面を用いてさらに詳細に説明
する。 The present invention will be explained in more detail using the drawings.
第１図は本発明の一実施例を示したもので、１
は軸心が垂直な円筒形空胴１ａを上部に有したハ
ウジングである。ハウジング１は円筒形空胴１ａ
の底部に流体入口２を有し、また頂部には流体出
口３を有している。流体入口２と流体出口３とは
仕切り板４で隔絶されているため、流体入口２か
ら円筒形空胴１ａ内に入つた磁性粉粒体の混入し
た流体P0は、円筒形空胴１ａ内を円周方向Ａに
沿つて進み、出口３よりP1で示すように排出さ
れる。 FIG. 1 shows an embodiment of the present invention.
is a housing having a cylindrical cavity 1a whose axis is perpendicular to the upper part. The housing 1 has a cylindrical cavity 1a
It has a fluid inlet 2 at the bottom and a fluid outlet 3 at the top. Since the fluid inlet 2 and the fluid outlet 3 are separated by the partition plate 4, the fluid P 0 mixed with magnetic powder that enters the cylindrical cavity 1a from the fluid inlet 2 flows into the cylindrical cavity 1a. along the circumferential direction A, and is discharged from the outlet 3 as shown by P1 .
５は円筒形空胴１ａの外周囲に嵌合配置された
円筒形の磁界発生装置で、円筒形の磁極５ａの内
面に円周方向に沿つてのびたリング状の溝を複数
本形成し、これらの溝にリング状に構成したコイ
ル６を夫々埋設し、しかもこれらのコイル６を三
相交流電源に接続して下向きの進行磁界を発生す
るように構成されている。このようにして円筒形
空胴１ａの内部に下向きの進行磁界が印加される
と、流体の流れに対し、磁界が直角に作用し、円
筒形空胴１ａの外周壁部の内面に磁性粒子が磁気
的に吸引されるとともに矢印Ｆで示すように落下
移送される。このとき流体の流れの方向と粒子へ
の磁界進行方向とは互いに直角をなすため分離効
率は極めて良くなる。Reference numeral 5 denotes a cylindrical magnetic field generator fitted around the outer periphery of the cylindrical cavity 1a, in which a plurality of ring-shaped grooves extending in the circumferential direction are formed on the inner surface of the cylindrical magnetic pole 5a. Ring-shaped coils 6 are buried in the respective grooves, and these coils 6 are connected to a three-phase AC power source to generate a downward traveling magnetic field. When a downward traveling magnetic field is applied inside the cylindrical cavity 1a in this way, the magnetic field acts at right angles to the fluid flow, causing magnetic particles to form on the inner surface of the outer peripheral wall of the cylindrical cavity 1a. It is magnetically attracted and transported downward as shown by arrow F. At this time, the direction of the flow of the fluid and the direction of the magnetic field traveling toward the particles are perpendicular to each other, so that the separation efficiency is extremely high.
また、ハウジング１の底部には溜り場１ｂが設
けられている。動作時間がたつにつれ、磁性粒子
が分離し徐々に濃縮されて溜り場１ｂに溜る。溜
り場１ｂに濃縮された磁性粒子は、溜り場１ｂの
外あるいは内部に設けられた磁気センサあるいは
放射能検知素子等のセンサ８により感知される。
センサ８により感知された磁性粒子の量は表示装
置９にて表示される。溜り場１ｂの磁性粒子が一
定量以上になると、入口からの流体を止めてバル
ブ７を開け、磁性粒子を鉛容器等の放射性物質格
納容器に濃縮した状態で落下させ、隔離収納す
る。溜り場１ｂの磁性粒子がなくなつたならば、
前記同様に入口２より流体を流入させて、磁気的
分離を行なわせる。又、上記の運転サイクルにこ
だわらず連続的にも出来、放射性濃度をコントロ
ールしながらの回収も合せて可能である。 Furthermore, a reservoir 1b is provided at the bottom of the housing 1. As the operating time elapses, the magnetic particles separate, gradually become concentrated, and accumulate in the reservoir 1b. The magnetic particles concentrated in the reservoir 1b are detected by a sensor 8 such as a magnetic sensor or a radioactivity detection element provided outside or inside the reservoir 1b.
The amount of magnetic particles sensed by the sensor 8 is displayed on a display device 9. When the amount of magnetic particles in the reservoir 1b exceeds a certain level, the fluid from the inlet is stopped, the valve 7 is opened, and the magnetic particles are allowed to fall in a concentrated state into a radioactive substance storage container such as a lead container, and are stored in isolation. Once the magnetic particles in the reservoir 1b are gone,
Similarly to the above, fluid is allowed to flow in from the inlet 2 to perform magnetic separation. In addition, it is possible to perform continuous recovery without being limited to the above-mentioned operation cycle, and it is also possible to recover while controlling the radioactive concentration.
第２図は本発明の他の実施例を示し、下向きの
進行磁界を発生する磁界発生装置５をハウジング
１の円筒形空胴１ａの内周に嵌合配置し、しかも
円筒形空胴１ａの内部の円周方向に沿つて互いに
間隔をおいた二箇所にそれぞれ仕切り板４ａ，４
ｂを設け、入口２より流入した流体P0を矢印Ａ
方向に流しつつ一度分離して出口１１より出し、
配管１２を通してもう一方の入口１３より再度取
り入れて矢印A′方向に流しつつ分離し、出口３
より磁性粉粒体を除去した流体P2を排出させる
ものである。他については第１図と同様である。 FIG. 2 shows another embodiment of the present invention, in which a magnetic field generating device 5 for generating a downward traveling magnetic field is fitted and disposed on the inner periphery of the cylindrical cavity 1a of the housing 1. Partition plates 4a, 4 are provided at two locations spaced apart from each other along the internal circumferential direction.
b is provided, and the fluid P 0 flowing in from inlet 2 is indicated by arrow A.
While flowing in the direction, separate once and take out from outlet 11,
It is taken in again from the other inlet 13 through the pipe 12 and separated while flowing in the direction of arrow A', and then the outlet 3
This is to discharge fluid P2 from which more magnetic particles have been removed. The rest is the same as in FIG. 1.
以上実施例を用いて説明したように、本発明に
よれば、流体の流れと磁界の作用とが直角となる
ため、従来に比し、同一コイルに同一電流を流し
ても、その分離効率は大幅に改善され、また確実
であり、また装置全体も極めてコンパクトにでき
るようになつた。 As explained above using the embodiments, according to the present invention, the flow of fluid and the action of the magnetic field are at right angles, so even if the same current is passed through the same coil, the separation efficiency is lower than in the past. This has been greatly improved and is reliable, and the entire device can now be made extremely compact.
第１図は本発明の一実施例の構成を示し、ａは
平面図、ｂは断面図、第２図は本発明の他の実施
例の構成例を示し、ａは平面図、ｂは断面図であ
る。
１……ハウジング、１ａ……円筒形空胴、１ｂ
……溜り場、２……流体入口、３……流体出口、
４，４ａ，４ｂ……仕切り板、５……磁界発生装
置、５ａ……磁極、６……コイル、７……バル
ブ、８……センサ、９……表示装置。
FIG. 1 shows the configuration of an embodiment of the present invention, in which a is a plan view and b is a sectional view. FIG. It is a diagram. 1...Housing, 1a...Cylindrical cavity, 1b
...Reservoir, 2...Fluid inlet, 3...Fluid outlet,
4, 4a, 4b...partition plate, 5 ...magnetic field generator, 5a...magnetic pole, 6...coil, 7...valve, 8...sensor, 9...display device.
Claims (1)
グと、該円筒形空胴内に流体を通過させる手段
と、該円筒形空胴内の流体の流れる向きを周方向
に規定する手段と、該円筒形空胴の外周又は内周
に接するように磁極を有しかつ下向きの進行磁界
を発生する磁界発生装置とを含み、流体中に混在
する磁性粉粒体を該円筒形空胴の内壁面に吸引
し、かつ該内壁面に沿つて落下移送するように構
成したことを特徴とする磁性粉粒体の分離装置。1. A housing having a cylindrical cavity with a vertical axis, means for passing fluid through the cylindrical cavity, and means for defining the flow direction of the fluid within the cylindrical cavity in the circumferential direction; a magnetic field generating device that has magnetic poles in contact with the outer circumference or inner circumference of the cylindrical cavity and generates a downward traveling magnetic field; 1. A separation device for magnetic powder, characterized in that it is configured to be attracted to a wall surface and fall-transferred along the inner wall surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56105555A JPS588563A (en) | 1981-07-08 | 1981-07-08 | Apparatus for separating magnetic particulate material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56105555A JPS588563A (en) | 1981-07-08 | 1981-07-08 | Apparatus for separating magnetic particulate material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS588563A JPS588563A (en) | 1983-01-18 |
| JPS6324746B2 true JPS6324746B2 (en) | 1988-05-23 |
Family
ID=14410798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56105555A Granted JPS588563A (en) | 1981-07-08 | 1981-07-08 | Apparatus for separating magnetic particulate material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS588563A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9725922D0 (en) * | 1997-12-09 | 1998-02-04 | Boxmag Rapid Ltd | Apparatus and method for extracting magnetically susceptible materials from a fluid |
| DE102010017957A1 (en) | 2010-04-22 | 2011-10-27 | Siemens Aktiengesellschaft | Device for separating ferromagnetic particles from a suspension |
-
1981
- 1981-07-08 JP JP56105555A patent/JPS588563A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS588563A (en) | 1983-01-18 |
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