JPH0116509Y2 - - Google Patents
Info
- Publication number
- JPH0116509Y2 JPH0116509Y2 JP1988020438U JP2043888U JPH0116509Y2 JP H0116509 Y2 JPH0116509 Y2 JP H0116509Y2 JP 1988020438 U JP1988020438 U JP 1988020438U JP 2043888 U JP2043888 U JP 2043888U JP H0116509 Y2 JPH0116509 Y2 JP H0116509Y2
- Authority
- JP
- Japan
- Prior art keywords
- wall
- rotary
- rotating
- cylinders
- flow resistance
- 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
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- Centrifugal Separators (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は新規な構造を有する遠心分離装置に関
する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a centrifugal separator having a novel structure.
（従来の技術）
遠心分離機は回転筒内で物質の比重の差を遠心
力により一層増加させて、混合物質を物質別に分
離する装置であるが、回転筒内の物質は略々回転
筒と共に回転するので流動抵抗は少いが、一般に
外壁部が静止状態にあることから、高速で回転す
る回転筒はその外側の流体との間に大きな流動抵
抗を生ずる。このため、ウラン濃縮用遠心分離等
では、回転筒の外側の気体を希薄にするようにし
ているが、流動抵抗は回転筒の外周部の速度の２
乗と回転筒外側の流体の比重に大略比例し、外壁
と回転筒の隙間の長さに大略反比例する。また、
流動抵抗による消費動力は、流動抵抗と、外周部
速度と、外壁と回転筒の隙間の長さとに大略比例
するから、結局外周速度の３乗と回転筒外側流体
の比重に大略比例することになる。遠心力は回転
筒外周速度の２乗に比例するから、回転筒外周速
度を増加すればする程分離能力は増加するが、上
述したことから、消費動力はそれ以上に増加する
ことになる。このため、遠心分離機の回転筒外周
速度を大きくするのには経済上からも限度があ
る。(Prior art) A centrifugal separator is a device that uses centrifugal force to further increase the difference in specific gravity of substances within a rotating cylinder and separates a mixed substance into individual substances. Since it rotates, there is little flow resistance, but since the outer wall is generally stationary, a rotating cylinder that rotates at high speed creates a large flow resistance with the fluid outside of it. For this reason, in centrifugal separation for uranium enrichment, etc., the gas outside the rotating tube is diluted, but the flow resistance is 2 times the speed of the outer circumference of the rotating tube.
It is approximately proportional to the specific gravity of the fluid outside the rotating cylinder, and approximately inversely proportional to the length of the gap between the outer wall and the rotating cylinder. Also,
Since the power consumption due to flow resistance is approximately proportional to the flow resistance, the outer peripheral speed, and the length of the gap between the outer wall and the rotating cylinder, it is ultimately approximately proportional to the cube of the outer peripheral speed and the specific gravity of the fluid outside the rotating cylinder. Become. Since the centrifugal force is proportional to the square of the outer peripheral speed of the rotating cylinder, the separation capacity increases as the outer peripheral speed of the rotating cylinder increases, but as described above, the power consumption increases even more. For this reason, there is an economical limit to increasing the peripheral speed of the rotating cylinder of the centrifuge.
（考案が解決しようとする課題）
このようなことから、比重差の少い物質の混合
物、例えばウラン235の弗化物とウラン238の弗化
物の混合気体の分離には非常に多くの遠心分離機
を必要とし、設備に多大の資金を必要としてい
る。また、消費電力も台数に比例して増加するの
で、これまた大きな運転費を必要とすることにな
る。(Problem to be solved by the invention) For this reason, a large number of centrifugal separators are used to separate a mixture of substances with a small difference in specific gravity, such as a gas mixture of uranium-235 fluoride and uranium-238 fluoride. and requires a large amount of capital for equipment. Furthermore, power consumption also increases in proportion to the number of units, which also requires large operating costs.
（課題を解決するための手段）
本考案は、遠心分離機の４ケ以上の回転筒を２
行以上２列以上に配列し、それらとそれらを囲む
外壁により構成され、回転筒の相隣るもの同士で
最も接近した回転筒の部分の外周速度方向が同一
になるように配置することにより、相隣る回転筒
の最も接近した回転筒外周部の外側の流体は、２
つの回転筒のほぼ平均速度で同一方向に流動する
ので、そこにおいては流体と回転筒の間には相対
速度が小さく、従つて流動抵抗は少なく、流動抵
抗は外壁に隣る回転筒に大部分生じ、装置本体と
して、消費電力を著しく軽減させた遠心分離装置
に関する。(Means for Solving the Problems) The present invention combines four or more rotating cylinders of a centrifuge into two
By arranging the rotary cylinders in two or more rows or columns and consisting of them and an outer wall surrounding them, by arranging the rotary cylinders so that the outer circumferential speed directions of the parts of the rotary cylinders that are closest to each other are the same, The fluid outside the outer periphery of the rotating cylinders closest to each other is 2.
Since the fluid flows in the same direction at approximately the average speed of the two rotating tubes, the relative velocity between the fluid and the rotating tube is small, and therefore the flow resistance is small, and the flow resistance is mostly in the rotating tube adjacent to the outer wall. The present invention relates to a centrifugal separator that significantly reduces power consumption as the main body of the device.
（実施例）
本考案を実施したところを図によつて示す。第
１図は遠心分離装置の回転筒を４行４列計16個使
用した本考案の一態様の遠心分離装置の横断面を
示す。遠心分離装置の回転筒１は何れも同一寸法
で同一回転数を有するもので、それらは正方格子
の配列をなし、縦方向と横方向の隣りの回転筒に
対しては回転方向が逆になつている。回転筒内２
には、遠心分離すべき物質、たとえば弗化ウラン
の気体が入つており、回転筒１と外壁３との間に
は流体４たとえば流動抵抗が空気より遥かに小さ
いヘリウムガスが入つており、回転筒１の回転に
よる流体４に対する流動抵抗を減ずることを目標
にした場合には、真空近くに圧力を下げ、回転筒
内の遠心分離能力を増加させることを目的とする
場合は、流体４を高圧にして回転筒自体が遠心力
で破壊するのを抑えるように本考案を構成したも
のである。(Example) The implementation of the present invention will be shown in the drawings. FIG. 1 shows a cross section of a centrifugal separator according to one embodiment of the present invention, which uses a total of 16 rotary cylinders in 4 rows and 4 columns. All of the rotating cylinders 1 of the centrifugal separator have the same dimensions and the same rotation speed, and they form a square lattice arrangement, and the rotation direction is opposite to the vertically and horizontally adjacent rotating cylinders. ing. Inside the rotating cylinder 2
contains a substance to be centrifuged, such as uranium fluoride gas, and a fluid 4, such as helium gas, whose flow resistance is much smaller than air, is contained between the rotating cylinder 1 and the outer wall 3. When the goal is to reduce the flow resistance to the fluid 4 due to the rotation of the cylinder 1, the pressure is lowered to near vacuum, and when the purpose is to increase the centrifugal separation capacity in the rotating cylinder, the fluid 4 is placed under high pressure. The present invention is designed to prevent the rotating cylinder itself from being destroyed by centrifugal force.
16個の回転筒１の群が一勢に回転し始めると、
流体４は回転筒１と共に動くが、相隣る回転筒１
同士で最も接近した回転筒１の外周部間５の流体
４は、回転筒１と同一方向にほぼ同一速度で流れ
る。また、相隣る４つの回転筒に囲まれた領域６
の流体は、それぞれの回転筒の周速方向に分離流
動する。外壁３に接近した回転筒１の部分との領
域７の流体４は、通常の遠心分離機と同様に外壁
３は静止しており大きな流動抵抗を生ずる。従つ
て、本考案の一態様を示す第１図の遠心分離装置
での流動抵抗は、主として外壁３の隣りである回
転筒１の外周部との間の領域７に生ずるから、大
略外壁３に隣する回転筒１の４ケの外周の半周部
分に相当する流動抵抗が生ずる。それが、通常の
回転筒の４ケ×1/2＝２ケで生ずる流動抵抗相当
が第１図に示す遠心分離装置16ケ回転筒で生ずる
流動抵抗に大略等しくなるから、本考案による場
合は、通常のものに比べ大略2/16≒0.13の流動抵
抗ということになる。 When the group of 16 rotating cylinders 1 begins to rotate all at once,
The fluid 4 moves together with the rotating cylinder 1, but the fluid 4 moves with the rotating cylinder 1 adjacent to each other.
The fluid 4 between the outer peripheries 5 of the rotary cylinders 1 that are closest to each other flows in the same direction as the rotary cylinders 1 at approximately the same speed. In addition, an area 6 surrounded by four adjacent rotating cylinders
The fluids flow separately in the circumferential speed direction of each rotating cylinder. The fluid 4 in the area 7 with the part of the rotary cylinder 1 close to the outer wall 3 has a large flow resistance because the outer wall 3 is stationary, as in a normal centrifuge. Therefore, the flow resistance in the centrifugal separator shown in FIG. 1, which shows one embodiment of the present invention, mainly occurs in the region 7 between the outer circumferential portion of the rotary cylinder 1 adjacent to the outer wall 3, and therefore, the flow resistance is mainly caused in the outer wall 3. Flow resistance corresponding to the half-circumferential portions of the four adjacent rotary tubes 1 is generated. Since the flow resistance generated by 4 x 1/2 = 2 normal rotating cylinders is approximately equal to the flow resistance generated by the 16 rotating cylinders of the centrifugal separator shown in Fig. 1, in the case of the present invention, , the flow resistance is approximately 2/16≒0.13 compared to the normal one.
また、本考案を大きな外壁３を有する遠心分離
装置に構成すると、外壁３の直径付近に並ぶ回転
筒の数がｄケ所では、全回転筒の数が大略π／
4d2で、外壁３の内周に隣する回転筒の数は大略
πdとなり、回転筒１の流動抵抗は、通常の遠心
分離機に比し、大略πd／d2π／４・1/2＝２／ｄにな
る。例えば、ｄ＝100ケであれば、本考案を実施
した遠心分離機の回転筒１の流動抵抗は、通常の
ものの大略２／ｄ＝2/100＝1/50となり、極めて
小さなものとなる。第２図は回転筒の直径が全て
同一のものでない本考案の別の態様を示す断面図
である。この場合においても、相隣る回転筒１の
最も接近したところの外周速度を同一に、速度方
向を同一にとれば、相隣る回転筒間５の流体４の
流動は抵抗が殆どなく行われる。そして、小直径
の回転筒１は回転数が増加し、遠心力も大直径の
回転筒１より大きくなる。この遠心力の差を利用
して、分離作業を２段に分けて行うことができ
る。直径の異る回転筒を数種類使用することによ
つて分離作業は数段にできる。 Furthermore, when the present invention is configured as a centrifugal separator having a large outer wall 3, when the number of rotating cylinders lined up near the diameter of the outer wall 3 is d, the total number of rotating cylinders is approximately π/
4d 2 , the number of rotating cylinders adjacent to the inner periphery of the outer wall 3 is approximately πd, and the flow resistance of the rotating cylinder 1 is approximately πd/d 2 π/4・1/2 compared to a normal centrifuge. =2/d. For example, if d=100, the flow resistance of the rotary cylinder 1 of the centrifugal separator according to the present invention will be approximately 2/d=2/100=1/50 of the normal one, which is extremely small. FIG. 2 is a sectional view showing another embodiment of the present invention in which the diameters of the rotary cylinders are not all the same. Even in this case, if the outer circumferential speeds of the adjacent rotating cylinders 1 at the closest point are the same and the speed directions are the same, the fluid 4 between the adjacent rotating cylinders 5 can flow with almost no resistance. . The rotational speed of the small-diameter rotary tube 1 increases, and the centrifugal force also becomes larger than that of the large-diameter rotary tube 1. Using this difference in centrifugal force, the separation work can be performed in two stages. By using several types of rotating cylinders with different diameters, the separation operation can be performed in several stages.
本考案の変形、改良を述べると、本考案は各回
転筒１の外周速度を、外壁３に近いもの程遅く、
遠ざかるもの程、すなわち、中心部にある程高速
とすることによつて、外壁３とそれに最も近い回
転筒１の間の流動抵抗を減少させ、各隣接する回
転筒１の間には多少の流動抵抗が増しても、全体
として回転筒１の流動抵抗を減少させることも可
能である。この場合には、遠心力を一定にする
か、段差を設ける等のため直径の異なる回転筒を
使用する態様と組合せることもできる。又、回転
筒１の間に整流格子８を設けることによつて外壁
３より離れた位置にある流体４の流動の乱れによ
り流動抵抗が発生するのを防止することができ
る。整流格子８は流体４の乱れの発生し易いケ所
におくのがよいが、例えば、回転筒１の４つの間
隙６とか外壁３に近い回転筒１間の外壁３に接す
るケ所におくのがよい効果をもたらす。 To describe modifications and improvements of the present invention, the present invention sets the outer peripheral speed of each rotary cylinder 1 to be lower as it is closer to the outer wall 3.
By making the speed higher as it moves further away, that is, closer to the center, the flow resistance between the outer wall 3 and the rotating cylinder 1 closest to it is reduced, and there is some flow between each adjacent rotating cylinder 1. Even if the resistance increases, it is also possible to reduce the flow resistance of the rotary cylinder 1 as a whole. In this case, it may be combined with a mode in which rotary cylinders with different diameters are used to keep the centrifugal force constant or to provide steps. Further, by providing the rectifying grid 8 between the rotary tubes 1, it is possible to prevent flow resistance from occurring due to disturbances in the flow of the fluid 4 located at a distance from the outer wall 3. It is best to place the rectifying grid 8 in a place where turbulence in the fluid 4 is likely to occur, for example, in the four gaps 6 of the rotary cylinder 1 or in a place close to the outer wall 3 between the rotary cylinders 1 and in contact with the outer wall 3. bring about an effect.
（考案の効果）
以上のように、本考案による装置においては、
各回転筒間に、生ずる流動抵抗は少なく、流動抵
抗は外壁に隣る回転筒に大部分生じ、装置全体と
して、消費動力を著しく軽減させることができ
る。(Effect of the invention) As described above, in the device according to the invention,
The flow resistance that occurs between each rotary tube is small, and most of the flow resistance occurs in the rotary tube adjacent to the outer wall, so that the power consumption of the device as a whole can be significantly reduced.
第１図は同一の直径の回転筒を使用した本考案
の遠心分離装置の断面図である。第２図は直径が
異なる回転筒を使用した本考案の遠心分離装置の
断面図である。
１……回転筒、３……外壁、４……流体、８…
…整流格子。
FIG. 1 is a sectional view of the centrifugal separator of the present invention using rotating cylinders of the same diameter. FIG. 2 is a cross-sectional view of the centrifugal separator of the present invention using rotating tubes with different diameters. 1...Rotating tube, 3...Outer wall, 4...Fluid, 8...
... Rectifier grid.
Claims (1)
とも４個以上の回転筒およびそれらを囲む外壁か
ら実質的に構成され、前記回転筒はそれらの相隣
る同士でそれらが最も接近した前記回転筒の外周
部分の速度方向が同一になる様に配置され、前記
回転筒同士の間隙あるいは外壁に近い回転筒間の
外壁に接する位置には整流格子が設けられ、前記
外壁と前記回転筒とによつて囲まれた空間に流体
が充填されている遠心分離装置。 It is essentially composed of at least four or more rotating tubes arranged in two or more rows or more than two columns and an outer wall surrounding them, and the rotating tubes are adjacent to each other and the rotary tubes are closest to each other. A rectifying grid is arranged so that the speed directions of the outer circumferential portions are the same, and a rectifying grid is provided in the gap between the rotary cylinders or at a position close to the outer wall between the rotary cylinders and in contact with the outer wall, and the flow rate is adjusted by the outer wall and the rotary cylinder. A centrifugal separator in which an enclosed space is filled with fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988020438U JPH0116509Y2 (en) | 1988-02-18 | 1988-02-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988020438U JPH0116509Y2 (en) | 1988-02-18 | 1988-02-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63144829U JPS63144829U (en) | 1988-09-22 |
| JPH0116509Y2 true JPH0116509Y2 (en) | 1989-05-16 |
Family
ID=30815950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988020438U Expired JPH0116509Y2 (en) | 1988-02-18 | 1988-02-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0116509Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5122488B2 (en) * | 1972-05-22 | 1976-07-10 |
-
1988
- 1988-02-18 JP JP1988020438U patent/JPH0116509Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63144829U (en) | 1988-09-22 |
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