JPH01115413A - Method for sealing module outer cylinder - Google Patents
Method for sealing module outer cylinderInfo
- Publication number
- JPH01115413A JPH01115413A JP27047387A JP27047387A JPH01115413A JP H01115413 A JPH01115413 A JP H01115413A JP 27047387 A JP27047387 A JP 27047387A JP 27047387 A JP27047387 A JP 27047387A JP H01115413 A JPH01115413 A JP H01115413A
- Authority
- JP
- Japan
- Prior art keywords
- outer cylinder
- plug
- shore hardness
- seal
- sealing
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000007789 sealing Methods 0.000 title claims description 14
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229920000728 polyester Polymers 0.000 claims abstract description 3
- 239000012510 hollow fiber Substances 0.000 claims description 15
- 239000004952 Polyamide Substances 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 238000007689 inspection Methods 0.000 abstract description 5
- 229920001971 elastomer Polymers 0.000 abstract 1
- 239000000806 elastomer Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 8
- 239000012528 membrane Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【発明の詳細な説明】
（ａ業上の利用分野）
本発明は、中空糸型濾過器の外筒の穴をシールする方法
に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for sealing holes in an outer cylinder of a hollow fiber filter.
（従来技術とその問題点）
中空糸型濾過器は、単位容積当りの膜面積が多くとれる
ために経済的で、半導体、医薬、食品等の分野で広く使
用されている。特に近年、原子力発電所等では濾過塔に
複数の濾過モジュールを懸垂して外圧で使用する用途が
増加してきた。(Prior art and its problems) Hollow fiber filters are economical because they have a large membrane area per unit volume, and are widely used in fields such as semiconductors, medicine, and food. Particularly in recent years, applications in which a plurality of filtration modules are suspended from a filtration tower and used under external pressure have been increasing in nuclear power plants and the like.
複数の中空糸型濾過モジュールを濾過塔に懸垂して使用
する場合、濾過モジュールの組立や運搬、取扱い時の中
空糸膜の汚れや傷つきを防止するために、一般に濾過モ
ジュールには外筒を使用するのが好ましい。しかし、外
筒を用いると原液が入る穴を外筒に設ける必要があり、
原子力発電所の復水処理に用いられる濾過器のように透
過水量が１０♂／ Ｈｒにもなると、外筒に多数の穴を
設けないと原液の供給が追いつかなくなフたり、中空糸
が原液の流入によって傷ついたりする恐れがある。また
、濾過器の外筒にはプラスチックパイプが使われている
ため、肉厚はせいぜい５〜８ｍｍ程度で、しかも曲面と
なっているため外筒の穴のシールは非常に困難であった
。一般に中空糸型濾過器では濾過器を組立てた後、中空
糸膜が破れていないか、破れている場合はどの中空糸が
破れているかを調べる必要がある。その際、外筒に設け
た穴の１ケ所を除いて プラグでシールし、残りの１ケ
所の穴を穴あきプラグで空気配管と接続して、該空気配
管より加圧し、濾過器の接着端面のどの中空糸から空気
がもれるかによって膜破れやピンホールの検知を行フて
いる。このような検査の圧力は高い方が安全であり、プ
ラスチックプラグや金属プラグにシールテープを巻いて
使用しているが、穴部の外筒肉厚が薄く、しかも曲面と
なっているため、０．２〜０．３Ｋｇ／Ｃゴ程度の圧力
で空気がもれてしまい十分な検査ができなかった。また
、もれ検査が終了すると、取付けたプラグを全て外し、
濾過塔に取付けて運転し、透過水量等の性能をチエツク
し、濾過塔から取出し、乾燥防止のために水を充填し、
再びシールテープを巻いた盲プラグで密栓シールする必
要があり、シールテープを巻いたり、ネジ部についたシ
ールテープを外すのに非常に労力を要した。When using multiple hollow fiber filtration modules suspended in a filtration tower, an outer cylinder is generally used for the filtration module to prevent the hollow fiber membranes from getting dirty or damaged during assembly, transportation, and handling of the filtration modules. It is preferable to do so. However, when using an outer cylinder, it is necessary to provide a hole in the outer cylinder for the stock solution to enter.
When the amount of permeated water reaches 10♂/Hr, such as in filters used for condensate treatment at nuclear power plants, the supply of undiluted solution cannot keep up unless a large number of holes are provided in the outer tube, and the hollow fibers are unable to keep up with the undiluted solution. may be damaged by the influx of Furthermore, since a plastic pipe is used for the outer cylinder of the filter, the wall thickness is approximately 5 to 8 mm at most, and the curved surface makes it extremely difficult to seal the holes in the outer cylinder. Generally, in a hollow fiber type filter, after assembling the filter, it is necessary to check whether the hollow fiber membrane is torn or not, and if so, which hollow fiber is torn. At that time, seal all but one of the holes made in the outer cylinder with a plug, connect the remaining hole to the air pipe with a holed plug, apply pressure from the air pipe, and apply pressure to the adhesive end of the filter. Membrane tears and pinholes are detected by determining whether air leaks from the hollow fibers in the throat. It is safer to use a higher pressure for such inspections, and sealing tape is wrapped around the plastic plug or metal plug. Air leaked at a pressure of about .2 to 0.3 kg/C, making it impossible to conduct a thorough inspection. In addition, once the leakage inspection is complete, remove all installed plugs,
It is installed in a filtration tower and operated, checking performance such as the amount of permeated water, taken out from the filtration tower, and filled with water to prevent drying.
It was necessary to seal the plug again with a blind plug wrapped with sealing tape, and it took a lot of effort to wrap the sealing tape and remove the sealing tape from the threaded part.
（解決しようとする問題点）
本発明の目的は、中空糸型濾過器の外筒に設けた穴をシ
ールテープを必要とせず、しかも高圧でももれないよう
にシールする方法を提供するにある。(Problems to be Solved) An object of the present invention is to provide a method for sealing holes provided in the outer cylinder of a hollow fiber filter without the need for sealing tape and in a manner that prevents leakage even under high pressure. .
（問題点を解決するための手段）
本発明者は上記問題点を解決するために鋭意研究した結
果、ショア硬度（Ｄスケール）３５〜６０の熱可塑性エ
ラストマー製のプラグを用いることによって解決できる
ことを見い出し、本発明を完成したものである。(Means for Solving the Problem) As a result of intensive research in order to solve the above problem, the present inventor found that the problem can be solved by using a plug made of thermoplastic elastomer having a Shore hardness (D scale) of 35 to 60. The heading completes the invention.
すなわち、本発明に用いられる熱可塑性エラストマーと
しては、ＡＳＴＭ Ｄ゛６７６によるショア硬度がＤ
スケールで３５ないし６０で、滑りのよい、ポリエステ
ル、ポリウレタン、ポリアミド、ポリオレフィン等が好
ましい。ショア硬度が３５未満又は６０を超えると、完
全なシールが得られない。尚、これらの材質はやわらか
いために、プラグの締付は部分を５角形や６六角形の角
形にしてもスパナ等で締めつけると空まわりする場合も
あるので、金属を挿入してプラグを成形するのが好まし
い。That is, the thermoplastic elastomer used in the present invention has a Shore hardness of D according to ASTM D676.
Polyester, polyurethane, polyamide, polyolefin, etc., which have a scale of 35 to 60 and have good slippage, are preferable. If the Shore hardness is less than 35 or greater than 60, a perfect seal cannot be obtained. In addition, since these materials are soft, even if the plug is tightened into a pentagonal or hexagonal shape, it may come loose when tightened with a spanner, so insert metal to form the plug. is preferable.
以下、本発明について実施例で具体的に説明するが、本
発明はこれに限定されるものではない。EXAMPLES The present invention will be specifically described below with reference to Examples, but the present invention is not limited thereto.
（実施例１）
外径１４０ｍｍ、肉厚８ｍｍ、長さ２２００ｍｍのポリ
プロピレン製のパイプにＰＴ％のネジ穴を２０ケあけ、
該パイプに膜孔径０．１μｍ、中空糸径が外径１．２ｍ
ｍ、内径０．６６ｍｍのポリエチレン製中空糸５０００
本を挿入し、接着剤で中空糸両端をパイプに接着し、両
端開口の中空糸型モジュールを製作した。６角形状の締
付は部をもった盲プラグをそれぞれポリプロピレン（比
較例１）、ポリエステルエラストマー（東洋紡製ベルプ
レンＰ ４０ Ｈ−・・・・・実施例１）、ポリオレフ
ィンエラストマー（住友化学製ＴＰＥ・・・・・・比較
例２）、シリコンゴム（比較例３）で成形した。(Example 1) 20 PT% screw holes were drilled in a polypropylene pipe with an outer diameter of 140 mm, a wall thickness of 8 mm, and a length of 2200 mm.
The pipe has a membrane pore diameter of 0.1 μm and a hollow fiber diameter of 1.2 m.
5000 polyethylene hollow fibers with an inner diameter of 0.66 mm
A book was inserted and both ends of the hollow fiber were glued to the pipe with adhesive to create a hollow fiber module with both ends open. A blind plug with a hexagonal shape was used for the tightening. ...Comparative Example 2) and silicone rubber (Comparative Example 3).
次いでモジュール外筒の１９ケの穴をそれぞれの盲プラ
グで密封し、残りの１つの穴から水中で加圧して各盲プ
ラグのシール性、硬度、ネジ込み易さを調べた。結果を
一括して表に示した。Next, the 19 holes in the module outer cylinder were sealed with each blind plug, and the remaining hole was pressurized underwater to examine the sealing performance, hardness, and ease of screwing in each blind plug. The results are summarized in the table.
表から明らかなように、ショア硬度が３５〜６０の範囲
内で、特に金属を挿入したプラグを使用すわば、完全な
シールが達成できるが、ショア硬度が３５〜６０の範囲
外の各比較例の場合には、シール性が不十分であった。As is clear from the table, a perfect seal can be achieved when the Shore hardness is within the range of 35 to 60, especially if a plug with metal inserted is used, but each comparative example where the Shore hardness is outside the range of 35 to 60. In this case, the sealing performance was insufficient.
（発明の効果）
本発明によれば、モジュール外筒を密封するのにシール
テープを全く必要とせず、しかもモジュールのピンホー
ル検査を高圧で行うことができる。(Effects of the Invention) According to the present invention, no sealing tape is required to seal the module outer cylinder, and pinhole inspection of the module can be performed under high pressure.
Claims (3)
法において、ショア硬度（Ｄスケール）３５〜６０の熱
可塑性エラストマー製のプラグを用いることを特徴とす
るモジュール外筒のシール方法。(1) A method for sealing a hole formed in the outer cylinder of a hollow fiber filter, which is characterized by using a plug made of thermoplastic elastomer having a Shore hardness (D scale) of 35 to 60. .
タン、ポリアミド、ポリオレフィンのいずれかである特
許請求の範囲第１項記載のモジュール外筒のシール方法
。(2) The method for sealing a module outer cylinder according to claim 1, wherein the thermoplastic elastomer is polyester, polyurethane, polyamide, or polyolefin.
製のプラグである特許請求の範囲第１項または第２項記
載のモジュール外筒のシール方法。(3) The method for sealing a module outer cylinder according to claim 1 or 2, wherein the plug is a plug made of thermoplastic elastomer into which metal is inserted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27047387A JPH01115413A (en) | 1987-10-28 | 1987-10-28 | Method for sealing module outer cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27047387A JPH01115413A (en) | 1987-10-28 | 1987-10-28 | Method for sealing module outer cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01115413A true JPH01115413A (en) | 1989-05-08 |
Family
ID=17486800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27047387A Pending JPH01115413A (en) | 1987-10-28 | 1987-10-28 | Method for sealing module outer cylinder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01115413A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104703638A (en) * | 2012-10-09 | 2015-06-10 | 东丽株式会社 | Plug, medical module and medical system |
-
1987
- 1987-10-28 JP JP27047387A patent/JPH01115413A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104703638A (en) * | 2012-10-09 | 2015-06-10 | 东丽株式会社 | Plug, medical module and medical system |
| EP2907533A4 (en) * | 2012-10-09 | 2016-06-15 | Toray Industries | Plug, medical module and medical system |
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