JP4788728B2

JP4788728B2 - Fluid separation element assembly

Info

Publication number: JP4788728B2
Application number: JP2008067222A
Authority: JP
Inventors: 浩二藤原; 洋行筏; 久昭藤野
Original assignee: Toray Industries Inc
Current assignee: Toray Industries Inc
Priority date: 1997-11-21
Filing date: 2008-03-17
Publication date: 2011-10-05
Anticipated expiration: 2018-03-20
Also published as: JP2008149322A

Description

本発明は、流体分離組立体に関する。詳しくは、逆浸透装置や限外濾過装置、精密濾過装置、さらには気体分離装置等に用いるのに好適な流体分離素子組立体に関する。 The present invention relates to a fluid separation assembly. Specifically, the present invention relates to a fluid separation element assembly suitable for use in a reverse osmosis device, an ultrafiltration device, a microfiltration device, a gas separation device, and the like.

近年、海水淡水化や半導体分野における超純水用途、さらには、一般かん水用途や有機物分離、排水再利用などを始めとする膜の透過液を利用する様々な流体分離分野において、分離膜を用いた流体分離素子の使用が急速に増加してきている。 In recent years, separation membranes have been used in various fluid separation fields that use membrane permeates such as seawater desalination and semiconductors, ultra-pure water in semiconductor fields, general brine applications, organic matter separation, and wastewater reuse. The use of fluid separation elements has increased rapidly.

分離膜を用いた流体分離素子としては、特公昭５２−５４３１号公報や特公昭４４−１４２１６号公報に記載されているスパイラル型流体分離素子がある。これらの流体分離素子の端面には、原液が通過する際に生じる圧力損失によって流体分離素子が望遠鏡（テレスコープ）状に変形することを防止するために、テレスコープ防止板が取り付けられ、流体分離素子組立体として用いられている。テレスコープ防止板は、圧力損失により発生する荷重で簡単に分解しないように流体分離素子に結合され、一体化されている。したがって、流体分離素子組立体が分離膜などの性能低下により使用することができなくなると、テレスコープ防止板や集水管などが部材としては使用することができるにも関わらず、再利用されることなく全てが廃棄処分にされる。 As a fluid separation element using a separation membrane, there is a spiral fluid separation element described in Japanese Patent Publication No. 52-5431 and Japanese Patent Publication No. 44-14216. Telescope prevention plates are attached to the end faces of these fluid separation elements in order to prevent the fluid separation elements from being deformed into a telescope shape due to pressure loss that occurs when the stock solution passes. It is used as an element assembly. The telescope prevention plate is coupled and integrated with the fluid separation element so as not to be easily disassembled by a load generated by pressure loss. Therefore, when the fluid separation element assembly cannot be used due to the performance degradation of the separation membrane or the like, the telescope prevention plate or the water collecting pipe can be used as a member even though it can be used as a member. Not everything is disposed of.

その他に、実際に流体分離を行う際には、複数本の流体分離素子組立体を接続し圧力容器に収納して分離膜モジュールとして使用するが、接続するためにはテレスコープ防止板と流体分離素子以外に接続手段を必要とする。そのため、圧力容器内の空間を接続手段に占有され、実際に流体分離を行う流体分離素子の有効長さは小さいものである。 In addition, when actually performing fluid separation, a plurality of fluid separation element assemblies are connected and housed in a pressure vessel to be used as a separation membrane module. A connection means is required in addition to the element. Therefore, the effective length of the fluid separation element that occupies the space in the pressure vessel by the connection means and actually performs fluid separation is small.

有効長さを大きくするためにテレスコープ防止板を取り付けずに用いる流体分離素子も開発されているが、圧力損失が大きくなるとテレスコープが起こり変形してしまうため、圧力損失が大きくなるような条件で使用することはできない。 In order to increase the effective length, a fluid separation element that is used without a telescope prevention plate has also been developed. However, if the pressure loss increases, the telescope will occur and deform, so that the pressure loss will increase. Cannot be used with.

特公昭５２−５４３１号公報Japanese Patent Publication No.52-5431 特公昭４４−１４２１６号公報Japanese Examined Patent Publication No. 44-14216 特開昭６２−２４７８０４号公報JP 62-247804 A 特開平９−２９９７６６号公報JP-A-9-299766 特開昭６０−８７８０４号公報JP 60-87804 A 実開昭６２−１７０１０３号公報Japanese Utility Model Publication No. 62-170103 実開昭５９−１２７７０５号公報Japanese Utility Model Publication No.59-127705

本発明の課題は、有効膜面積が大きく、圧力損失が大きくなっても好適に流体分離でき、かつ再利用のできる流体分離素子組立体を提供することにある。また、本発明の課題は、併せて、その流体分離素子組立体、およびその流体分離素子組立体を用いた流体分離膜モジュールに、望ましいシール性能を付与することにある。 An object of the present invention is to provide a fluid separation element assembly that has a large effective membrane area and that can be suitably separated and reused even when the pressure loss increases. It is another object of the present invention to provide desirable sealing performance to the fluid separation element assembly and the fluid separation membrane module using the fluid separation element assembly.

上記課題を達成するために、本発明の流体分離素子組立体は、集水孔を有する集水管の周りに分離膜、透過液流路材および原液流路材を含む膜ユニットを形成し、その膜ユニットの外側に外装体を形成してなる流体分離素子と、その流体分離素子の少なくとも一端部に着脱自在に装着されるテレスコープ防止板とを有していることを特徴とするものからなる。 In order to achieve the above object, a fluid separation element assembly according to the present invention forms a membrane unit including a separation membrane, a permeate flow path material, and a stock flow path material around a water collection pipe having a water collection hole. It has a fluid separation element formed by forming an exterior body outside the membrane unit, and a telescope prevention plate that is detachably attached to at least one end of the fluid separation element. .

この流体分離素子組立体においては、原液の、分離膜を通った透過液への混入を適切に防止するために、各種部位に原液シール部材を設けることが好ましい。原液シール部材は、たとえば、外装体の外周面や外装体の軸方向端部に設けることができる。また、テレスコープ防止板の外周面に原液シール部材を設けることもできる。外装体の軸方向端部に設けた原液シール部材は、膜ユニットの端部から庇状に突き出ていてもよい。この外装体の軸方向端部に設けられた原液シール部材は、テレスコープ防止板に直接接触してもよく、テレスコープ防止板の外周面に設けられた原液シール部材に接触してもよい。テレスコープ防止板の外周面に原液シール部材を設ける場合には、テレスコープ防止板の外周面に凹部を形成し、その凹部に原液シール部材を装着することが好ましい。この場合、凹部の、原液の流れ方向に関して上流側に位置する側縁高さが下流側に位置するそれよりも高く、かつ、凹部に設けられた原液シール部材が流体分離素子（流体分離素子の外装体の端部あるいは外装体の端部に設けられた原液シール部材）に接触することが好ましい。 In this fluid separation element assembly, it is preferable to provide stock solution seal members at various sites in order to appropriately prevent the stock solution from being mixed into the permeate through the separation membrane. The stock solution sealing member can be provided, for example, on the outer peripheral surface of the exterior body or the axial end of the exterior body. Further, a stock solution sealing member can be provided on the outer peripheral surface of the telescope prevention plate. The stock solution seal member provided at the end in the axial direction of the exterior body may protrude in a bowl shape from the end of the membrane unit. The stock solution sealing member provided at the axial end of the exterior body may be in direct contact with the telescope prevention plate, or may be in contact with the stock solution seal member provided on the outer peripheral surface of the telescope prevention plate. When providing the concentrate seal member on the outer peripheral surface of the telescope prevention plate, it is preferable to form a recess in the outer periphery of the telescope prevention plate and attach the concentrate seal member to the recess. In this case, the height of the side edge of the recess located on the upstream side in the flow direction of the stock solution is higher than that located on the downstream side, and the stock seal member provided in the recess is a fluid separation element (of the fluid separation element). It is preferable to contact an end portion of the outer package or a stock solution sealing member provided at an end of the outer package.

テレスコープ防止板は、たとえば、原液流路を有する円板部と、その円板部の中心部に設けた、透過液流路を有する接続管部とを備えたものからなる。円板部と接続管部は、一体に構成されていてもよく、別体に構成されていてもよい。接続管部は、集水管への原液混入防止部材を備えていることが好ましい。この接続管部は、たとえば、流体分離素子の集水管に内挿される。接続管部と集水管を螺合により接合すれば、両者間の固定強度を向上できるとともに、両者間のシール性を高めることができる。 The telescope prevention plate includes, for example, a disk portion having a stock solution flow path and a connecting pipe portion having a permeate flow path provided at the center of the disk portion. The disc part and the connecting pipe part may be configured integrally or may be configured separately. It is preferable that the connecting pipe part is provided with a raw material mixture preventing member to the water collecting pipe. This connecting pipe part is inserted in the water collecting pipe of the fluid separation element, for example. If the connecting pipe part and the water collecting pipe are joined by screwing, the fixing strength between them can be improved and the sealing performance between them can be improved.

また、テレスコープ防止板の外周部には、流体分離素子側への環状突出部を設けることもできる。このように構成すれば、環状突出部内に流体分離素子を嵌め込む構造とでき、テレスコープ防止板の取り付けを容易化できるとともに、両者間の原液シール性を高めることができる。たとえば、環状突出部と流体分離素子の外周面との間に原液シール部材を設けたり、環状突出部の外周面から流体分離素子の外周面にかけて原液シール部材（たとえば、テープや弾性体）で覆うようにすると、この間のシール性を高めることができる。 Moreover, the annular protrusion part to the fluid separation element side can also be provided in the outer peripheral part of a telescope prevention plate. If comprised in this way, it can be set as the structure which fits a fluid separation element in a cyclic | annular protrusion part, and while being able to facilitate the attachment of a telescope prevention board, the undiluted solution seal property between both can be improved. For example, a stock solution sealing member is provided between the annular protrusion and the outer peripheral surface of the fluid separation element, or is covered with a raw solution seal member (for example, a tape or an elastic body) from the outer peripheral surface of the annular protrusion to the outer peripheral surface of the fluid separation element. If it does so, the sealing performance in the meantime can be improved.

本発明に係る流体分離膜モジュールは、上記のような流体分離素子組立体を、圧力容器に複数個収容したものからなる。圧力容器としては、たとえば、両端部に蓋体を備えたものが用いられが、その蓋体と、原液流れ方向に関して最も上流側に位置する流体分離素子組立体のテレスコープ防止板との間に、そのテレスコープ防止板の押圧部材を設けることが好ましい。 The fluid separation membrane module according to the present invention comprises a plurality of fluid separation element assemblies as described above accommodated in a pressure vessel. As the pressure vessel, for example, one having lids at both ends is used, and between the lid and the telescope prevention plate of the fluid separation element assembly located on the most upstream side in the stock solution flow direction. It is preferable to provide a pressing member for the telescope prevention plate.

上記のような本発明に係る流体分離素子組立体においては、テレスコープ防止板が流体分離素子に着脱自在に装着されるので、その流体分離素子組立体としては使用が不可能になった場合（たとえば、分離膜が寿命に達した場合）であっても、欠点のある部材のみを廃棄処分し、他の部材（たとえば、テレスコープ防止板や原液シール部材、場合によっては集水管）は再利用することが可能となる。 In the fluid separation element assembly according to the present invention as described above, the telescope prevention plate is detachably attached to the fluid separation element, so that the fluid separation element assembly cannot be used ( For example, even if the separation membrane reaches the end of its life), only the defective members are discarded, and other members (for example, telescope prevention plates, stock solution seal members, and in some cases, water collecting pipes) are reused. It becomes possible to do.

また、上記テレスコープ防止板や流体分離素子に原液シール部材を付設すれば、原液が透過液に混入することを適切に防ぐことができるようになり、分離性能の高い流体分離素子組立体となる。 Further, if a stock solution sealing member is attached to the telescope prevention plate and the fluid separation element, the stock solution can be appropriately prevented from being mixed into the permeate, and a fluid separation element assembly with high separation performance is obtained. .

さらに、テレスコープ防止板自身で流体分離素子同士を接続することが可能となり、従来接続のために必要とされていた空間を少なくすることができる。したがって、複数の流体分離素子を接続して流体分離膜モジュールとして用いる場合に、その内部における流体分離素子の有効長さの増大が可能となり、分離膜の面積を増大させて処理能力を高めることが可能になる。 Furthermore, it becomes possible to connect the fluid separation elements with the telescope prevention plate itself, and the space required for the conventional connection can be reduced. Therefore, when a plurality of fluid separation elements are connected and used as a fluid separation membrane module, the effective length of the fluid separation element in the interior can be increased, and the processing capacity can be increased by increasing the area of the separation membrane. It becomes possible.

本発明の流体分離素子組立体は、テレスコープ防止板が流体分離素子に着脱自在に装着されるので、その流体分離素子としては使用が不可能になった場合でも、欠点のある部材のみを廃棄処分し、流体分離素子組立体の他の部材は再利用することができる。 In the fluid separation element assembly of the present invention, since the telescope prevention plate is detachably attached to the fluid separation element, only the defective member is discarded even when the fluid separation element cannot be used. It can be disposed of and other components of the fluid separation element assembly can be reused.

ここで、テレスコープ防止板や流体分離素子に原液シール部材を付設した場合は、原液が透過液に混入することを防ぐことができるので分離性能の高い流体分離素子組立体となる。また、テレスコープ防止板で流体分離素子同士を接続することができる場合には、従来接続のために必要とされていた空間を少なくすることができる。本発明の流体分離素子組立体を流体分離膜モジュールとして用いる場合には、その内部空間を従来のモジュールよりも多く膜面積に変えることができるため、造水量を増加することができる。また、原液シール部材によって多量の原液が圧力容器と流体分離素子との隙間を流れることを防ぐことができるので、分離膜面で濃度分布を小さくすることができ、その結果、塩除去率や造水量を増やすことができる。さらに、発明の流体素子組立体を用いた流体分離膜モジュールは、圧力容器などの部材を変更する必要がないので、設備費を抑えることができる。 Here, when the stock solution seal member is attached to the telescope prevention plate or the fluid separation element, it is possible to prevent the stock solution from being mixed into the permeate, so that a fluid separation element assembly with high separation performance is obtained. Further, in the case where the fluid separation elements can be connected to each other with the telescope prevention plate, the space required for the conventional connection can be reduced. When the fluid separation element assembly of the present invention is used as a fluid separation membrane module, the internal space can be changed to a membrane area more than a conventional module, so that the amount of fresh water can be increased. In addition, since the stock solution seal member can prevent a large amount of stock solution from flowing through the gap between the pressure vessel and the fluid separation element, the concentration distribution on the separation membrane surface can be reduced. The amount of water can be increased. Furthermore, since the fluid separation membrane module using the fluid element assembly of the invention does not require a member such as a pressure vessel to be changed, the equipment cost can be reduced.

以下に、本発明の望ましい実施の形態を、図面を参照して説明する。図１は、本発明の一実施態様に係る流体分離素子組立体を示している。流体分離素子組立体１においては、集水孔２を有する集水管３の周りに、分離膜４と透過液流路材５と原液流路材６とを含む膜ユニット７がスパイラル状に巻回されており、その膜ユニット７の外側に外装体８が形成されて流体分離素子９が構成されている。この流体分離素子９の端面が露出され、その少なくとも一方の端部に、流体分離素子９がテレスコープ状に変形することを防止するために、テレスコープ防止板１０が装着されている。そして流体分離素子９とテレスコープ防止板１０は、必要に応じて交換ができるように、テレスコープ防止板１０が流体分離素子９の端部に着脱自在に装着されている。テレスコープ防止板が容易に着脱できないよう固定されている流体分離素子組立体であると、分離膜性能の低下などによって流体分離を十分に行えなくなると、その流体分離素子組立体全体を廃棄処分しなければならない。本発明の液体分離素子組立体１は、テレスコープ防止板１０が着脱自在に装着されていることで、そのような場合にも膜ユニット７だけを取り替え、テレスコープ防止板１０や集水管３は再利用することができる。 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a fluid separation element assembly according to an embodiment of the present invention. In the fluid separation element assembly 1, a membrane unit 7 including a separation membrane 4, a permeate flow path material 5, and a raw liquid flow path material 6 is wound around a water collection pipe 3 having a water collection hole 2 in a spiral shape. The exterior body 8 is formed outside the membrane unit 7 to form a fluid separation element 9. An end surface of the fluid separation element 9 is exposed, and a telescope prevention plate 10 is attached to at least one end of the fluid separation element 9 in order to prevent the fluid separation element 9 from being deformed into a telescope shape. The fluid separation element 9 and the telescope prevention plate 10 are detachably attached to the end of the fluid separation element 9 so that they can be exchanged as necessary. If the fluid separation element assembly is fixed so that the telescope prevention plate cannot be easily attached and detached, the fluid separation element assembly is discarded if the fluid separation cannot be sufficiently performed due to a decrease in the separation membrane performance or the like. There must be. In the liquid separation element assembly 1 of the present invention, the telescope prevention plate 10 is detachably attached. Even in such a case, only the membrane unit 7 is replaced, and the telescope prevention plate 10 and the water collecting pipe 3 are Can be reused.

本発明におけるテレスコープ防止板１０は、たとえば図２に示すように、原液流路１１を有する円板部１２と、その円板部１２の中心部に、透過液流路１３を有する、Ｏリングなどの原液混入防止部材１９を取り付けた接続管部１４とを備えたものからなる。テレスコープ防止板１０が、原液流路１１および透過液流路１３を備えているだけでなく接続管部１４を備えていることで、従来必要であった、複数個の流体分離素子組立体を連続に接続して用いる場合の接続手段が不要になる。また、その結果、省スペースとなるので、圧力容器に収容して流体分離膜モジュールとして用いる場合には、流体分離素子部分の長さを大きくすることができ、性能や効率を高めることができる。 The telescope prevention plate 10 according to the present invention includes, for example, as shown in FIG. 2, an O-ring having a disc portion 12 having a stock solution passage 11 and a permeate passage 13 at the center of the disc portion 12. And the connecting pipe portion 14 to which the stock solution mixing preventing member 19 is attached. Since the telescope prevention plate 10 includes not only the stock solution flow path 11 and the permeate flow path 13 but also the connection pipe portion 14, a plurality of fluid separation element assemblies that have been conventionally required can be obtained. No connection means is required for continuous connection. Further, as a result, space is saved, so that the length of the fluid separation element portion can be increased, and the performance and efficiency can be improved when it is housed in a pressure vessel and used as a fluid separation membrane module.

また、この接続管部１４には、原液が透過液に混入することを防ぐために原液混入防止部材１９が取り付けられている。テレスコープ防止板１０を流体分離素子９に装着した際に、この原液混入防止部材１９が集水管３の集水孔２の位置よりも端部側に位置するように取り付けることで、集水孔２から原液が透過液に混入することを防ぐ。そして、原液混入防止部材１９からテレスコープ防止板１０までの距離を、最上流にあるテレスコープ防止板１０から蓋体までの距離よりも長くすることで、使用時にテレスコープ防止板１０や流体分離素子９が圧力容器内で動いて集水管３内に原液が混入することを防ぐことができる。これらを考慮すると、一般的な１０１６ｍｍ長の流体分離素子の場合、集水管端部から２０〜９０ｍｍの範囲に原液混入防止部材１９を位置することが好ましい。 In addition, an undiluted solution mixture preventing member 19 is attached to the connecting pipe portion 14 in order to prevent the undiluted solution from being mixed into the permeated solution. When the telescope prevention plate 10 is attached to the fluid separation element 9, the stock solution mixing prevention member 19 is attached so as to be located on the end side from the position of the water collection hole 2 of the water collection pipe 3. 2 prevents the stock solution from entering the permeate. The distance from the stock solution mixing prevention member 19 to the telescope prevention plate 10 is longer than the distance from the most upstream telescope prevention plate 10 to the lid, so that the telescope prevention plate 10 and the fluid separation can be performed at the time of use. It is possible to prevent the element 9 from moving in the pressure vessel and mixing the stock solution into the water collecting pipe 3. In consideration of these, in the case of a general 1016 mm long fluid separation element, it is preferable to place the stock solution mixing preventing member 19 in a range of 20 to 90 mm from the end of the water collecting pipe.

また、その接続管部１４は、流体分離素子９の集水管３に内挿される。そのため、接続管部１４の外径は、流体分離素子９の集水管３の内径よりも小さく、流体分離素子９との接続時のがたつきを少なくし、原液のシール性をよくするためには、その差が０．０１〜０．５ｍｍの範囲にあることが好ましい。また、接続管部１４がテレスコープ防止板から２５〜１００ｍｍの範囲で突出していることも好ましい。そして、透過液の流路を十分に確保し、かつ十分な強度を得るために、接続管部１４の内外径差が６〜１６ｍｍの範囲にあることが好ましく、より好ましくは８〜１２ｍｍの範囲である。 The connecting pipe portion 14 is inserted into the water collecting pipe 3 of the fluid separation element 9. For this reason, the outer diameter of the connecting pipe portion 14 is smaller than the inner diameter of the water collecting pipe 3 of the fluid separation element 9 to reduce rattling when connected to the fluid separation element 9 and to improve the sealing performance of the stock solution. The difference is preferably in the range of 0.01 to 0.5 mm. Moreover, it is also preferable that the connecting pipe part 14 protrudes in the range of 25-100 mm from the telescope prevention plate. And, in order to ensure a sufficient flow path for the permeate and to obtain a sufficient strength, it is preferable that the inner and outer diameter difference of the connecting pipe portion 14 is in the range of 6 to 16 mm, more preferably in the range of 8 to 12 mm. It is.

テレスコープ防止板１０の円板部１２の材質は、原液流路１１を十分に大きく確保し、かつ、十分な強度を得るために曲げ強度が５０ＭＰａ以上の高剛性のものが好ましい。高剛性の材料としては、たとえば、金属、プラスチック、ＦＲＰなどがあるが、使用中に生じる錆などの腐食を受けにくいステンレススチール、ノリルやポリカーボネイト、硬質塩化ビニールなどが好ましい。また、流体分離素子９を長くして膜面積を大きくするためには円板部１２が薄いほうがよいが、強度を得るためには厚いほうがよい。そして、強度のためにテレスコープ防止板のリブ４１のテレスコープ防止板周方向における厚さも厚いほうがよい。これらを考慮して上記の材料を使用する場合、テレスコープ防止板１０の円板部１２の厚さは５〜３５ｍｍの範囲にあることが好ましい。なお、円板部１２の形状は、流体分子素子９の縦断面より大きければよく、流体分離膜モジュールとする場合には、圧力容器内に収容できるものであればよい。 The material of the disc portion 12 of the telescope prevention plate 10 is preferably a highly rigid material having a bending strength of 50 MPa or more in order to ensure a sufficiently large stock solution flow path 11 and to obtain a sufficient strength. Examples of the highly rigid material include metals, plastics, and FRP, but stainless steel, noryl, polycarbonate, and hard vinyl chloride that are not easily corroded by rust generated during use are preferable. Further, in order to lengthen the fluid separation element 9 and increase the membrane area, it is better that the disc portion 12 is thinner, but in order to obtain strength, it is better to be thicker. And the thickness in the telescope prevention plate circumferential direction of the rib 41 of a telescope prevention plate is good to be thick for strength. When the above materials are used in consideration of these, the thickness of the disc portion 12 of the telescope prevention plate 10 is preferably in the range of 5 to 35 mm. In addition, the shape of the disk part 12 should just be larger than the longitudinal cross-section of the fluid molecule | numerator element 9, and when setting it as a fluid separation membrane module, what is necessary is just to be accommodated in a pressure vessel.

流体分離を行うためには、上述した流体分離素子組立体１を複数個接続して、圧力容器に収容し、流体分離膜モジュールとする。 In order to perform fluid separation, a plurality of the fluid separation element assemblies 1 described above are connected and accommodated in a pressure vessel to form a fluid separation membrane module.

本発明の流体分離膜モジュールは、たとえば図３および図４に示すように、隣接する２つの流体分離素子９が１つのテレスコープ防止板１０を介して接続される。このため、接続に要する空間が１つのテレスコープ防止板１０の厚み分だけとなるため、流体分離素子の両端にテレスコープ防止板が装着されており、さらにその他に接続手段を必要としていた従来の流体分離膜モジュールに比べ、流体分離素子９を長くして、従来の圧力容器に収容することができる。すなわち、外形寸法を変更せずにモジュール内部における有効膜面積を増加することができ、流体分離素子１本当たりの造水量を増やすことができる。一方、従来と同じ造水量を確保する場合には、運転圧力を下げることができるため、運転コストの削減が可能である。新規設備を建設する場合には、配管、圧力容器など数量の削減だけでなく、低圧ポンプの採用や配管、圧力容器１５の耐圧を低く設定できるため、初期投資の大幅な削減ができる。 In the fluid separation membrane module of the present invention, for example, as shown in FIGS. 3 and 4, two adjacent fluid separation elements 9 are connected via one telescope prevention plate 10. For this reason, since the space required for connection is only the thickness of one telescope prevention plate 10, the telescope prevention plates are attached to both ends of the fluid separation element, and the connection means is required in addition to the conventional one. Compared to the fluid separation membrane module, the fluid separation element 9 can be made longer and accommodated in a conventional pressure vessel. That is, the effective membrane area inside the module can be increased without changing the external dimensions, and the amount of water produced per fluid separation element can be increased. On the other hand, when securing the same amount of fresh water as in the prior art, the operating pressure can be lowered, so that the operating cost can be reduced. When constructing a new facility, not only the number of pipes and pressure vessels can be reduced, but also the use of a low pressure pump and the pressure resistance of the pipes and pressure vessel 15 can be set low, so that the initial investment can be greatly reduced.

また、本発明の流体分離膜モジュールは、圧力損失によるスラスト荷重のかからない最上流のテレスコープ防止板を流体分離素子に十分に押しあてて、流体分離素子９とテレスコープ防止板１０との間から流体分離素子９と圧力容器１５の隙間へ原液が漏れないようにシールするために、圧力容器の蓋体と、原液の流れ方向に関して最も上流側に位置する流体分離素子組立体のテレスコープ防止板との間に、押圧部材があることが好ましい。押圧部材としては、たとえば図５に示すように、テレスコープ防止板１０と圧力容器１５の蓋体１６との間に金属ばね１７などの弾性部材を介装したり、図６に示すように、圧力容器１５の蓋体１６にアジャストボルト１８を付設したりできる。 Further, the fluid separation membrane module of the present invention sufficiently pushes the most upstream telescope prevention plate that is not subjected to the thrust load due to pressure loss against the fluid separation element, so that the fluid separation element 9 and the telescope prevention plate 10 are interposed between them. In order to seal the stock solution into the gap between the fluid separation element 9 and the pressure vessel 15 so as not to leak, the lid of the pressure vessel and the telescope prevention plate of the fluid separation device assembly located on the most upstream side in the flow direction of the stock solution There is preferably a pressing member between them. As the pressing member, for example, as shown in FIG. 5, an elastic member such as a metal spring 17 is interposed between the telescope prevention plate 10 and the lid body 16 of the pressure vessel 15, or as shown in FIG. An adjustment bolt 18 can be attached to the lid 16 of the pressure vessel 15.

このような流体分離膜モジュール４０を用いた流体分離では、図１に示すように、圧力容器内に送られた原液２０が、テレスコープ防止板１０の原液流路１１を通過して流体分離素子９の膜ユニット７へと進む。膜ユニット７に送られた原液２０は、原液流路材６を下流へ進むと同時に分離膜４を透過して、塩などの不要成分が除去され透過液流路材５へと流れる。そして、透過液流路材５に流入した透過液２１は、流体分離素子９の中心に位置する集水管３へと進む。集水孔２と通して集水管３内に到達した透過液２１は、その集水管３内を下流側へと流れ、次のテレスコープ防止板１０の透過液流路である接続管部１４、さらに次の流体分離素子９の集水管３へ進む。１つの流体分子素子９で処理されなかった原液は、テレスコープ防止板１０の原液流路１１を通って、次の流体分離素子９へと進み、下流側の流体分離素子９で処理される。 In the fluid separation using such a fluid separation membrane module 40, as shown in FIG. 1, the stock solution 20 sent into the pressure vessel passes through the stock solution flow path 11 of the telescope prevention plate 10 and the fluid separation element. Proceed to 9 membrane unit 7. The stock solution 20 sent to the membrane unit 7 travels downstream through the stock solution channel material 6 and simultaneously permeates the separation membrane 4 to remove unnecessary components such as salt and flows to the permeate channel material 5. Then, the permeate 21 that has flowed into the permeate flow path member 5 proceeds to the water collection pipe 3 located at the center of the fluid separation element 9. The permeated liquid 21 that has passed through the water collecting hole 2 and reached the water collecting pipe 3 flows downstream in the water collecting pipe 3, and a connecting pipe portion 14 that is a permeate flow path of the next telescope prevention plate 10; Further, the process proceeds to the water collecting pipe 3 of the next fluid separation element 9. The stock solution that has not been processed by one fluid molecular element 9 passes through the stock solution flow path 11 of the telescope prevention plate 10 to the next fluid separation element 9 and is processed by the fluid separation element 9 on the downstream side.

このとき、圧力容器１５と流体分離素子９の外装体８との隙間にも原液が流れる。原液が圧力容器１５と流体分離素子９との隙間を流れることにより、原液が隙間に滞留して微生物が発生したり、原液中の有機物が腐敗することを防ぐ。しかし、流れる原液の量が多すぎると、分離膜面を流れる原液の量が減り、分離膜面の濃度分布が大きくなるため、透過液の造水量や塩除去率を低下させてしまうばかりでなく、分離膜面への付着物の量も増加する。そのため、造水のための処理回数が増えるばかりでなく処理に要する時間が長くなり、しかも分離膜の寿命が短くなる。そこで、流体分離素子９の外装体８やテレスコープ防止板１０の外周面に原液シール部材を付設することが好ましい。 At this time, the stock solution also flows through the gap between the pressure vessel 15 and the outer casing 8 of the fluid separation element 9. When the stock solution flows through the gap between the pressure vessel 15 and the fluid separation element 9, the stock solution stays in the gap and prevents microorganisms from being generated and organic matter in the stock solution from being spoiled. However, if the amount of stock solution flowing is too large, the amount of stock solution flowing on the separation membrane surface will decrease and the concentration distribution on the separation membrane surface will increase, which will not only reduce the amount of water produced in the permeate and the salt removal rate. The amount of deposits on the separation membrane surface also increases. For this reason, not only the number of treatments for fresh water generation is increased, but the time required for the treatment is increased, and the life of the separation membrane is shortened. Therefore, it is preferable to attach a stock solution sealing member to the outer peripheral surface of the exterior body 8 of the fluid separation element 9 or the telescope prevention plate 10.

原液シール部材は、流体分離素子９の外装体８またはテレスコープ防止板１０の外周部、あるいはそれらの両方に設けることができる。まず、流体分離素子９の外装体外周面に原液シール部材を付設する場合、図７に示すように、径方向に突出し周方向に延びる環状の原液シール部材２５を圧力容器１５の内周面に密着させ使用する。原液シール部材２５の材質としては、高剛性の部材、弾性体を用いることができるが、圧力容器１５に原液シール部材２５をしっかりと密着させるためには弾性体であることが好ましい。また、図８に示すように、原液シール部材２６を外装体８の軸方向端部に設け、膜ユニット７の端部から軸方向に庇状に突き出た原液シール部材２６をテレスコープ防止板１０に密着させ、多量の原液が圧力容器１５と流体分離素子組立体１（または流体分離素子９）の隙間に流れることを防ぐ。図８の場合、原液シール部材２６の厚みは、強度と膜面積の観点からは０．５〜５ｍｍの範囲にあることが好ましく、またシール性の観点からは、膜ユニット７の端面よりも１〜１０ｍｍ突出していることが好ましい。図８のような場合、圧力損失が高くなり、流体分離素子９の内部から外部へ押し拡げようとする力がかかるため、原液シール部材２６はゴムなどの弾性体でもよいが曲げ強度が５０ＭＰａ以上の高剛性のものがより好ましい。高剛性の部材としては、たとえば、金属、プラスチック、ＦＲＰなどがあるが、使用中に生じる錆などの腐食を受けにくいステンレススチール、ノリルやポリカーボネイト、硬質塩化ビニールなどが好ましい。また、流体分離素子の外装体には一般的にＦＲＰが用いられているが、この場合、外装体成形時に型を当てて簡単に原液シール部材部分を一体に成形することができ、新たな部材を必要としないため、ＦＲＰが特に好ましい。 The stock solution sealing member can be provided on the outer casing 8 of the fluid separation element 9, the outer peripheral portion of the telescope prevention plate 10, or both of them. First, when the stock solution seal member is attached to the outer peripheral surface of the exterior body of the fluid separation element 9, as shown in FIG. 7, an annular stock solution seal member 25 that protrudes in the radial direction and extends in the circumferential direction is provided on the inner peripheral surface of the pressure vessel 15. Use in close contact. As the material of the stock solution sealing member 25, a highly rigid member or an elastic body can be used, but in order to make the stock solution sealing member 25 tightly adhere to the pressure vessel 15, an elastic body is preferable. Further, as shown in FIG. 8, the stock solution sealing member 26 is provided at the axial end of the exterior body 8, and the stock solution sealing member 26 protruding in an axial shape from the end of the membrane unit 7 is telescope-preventing plate 10. To prevent a large amount of undiluted solution from flowing into the gap between the pressure vessel 15 and the fluid separation element assembly 1 (or the fluid separation element 9). In the case of FIG. 8, the thickness of the stock solution sealing member 26 is preferably in the range of 0.5 to 5 mm from the viewpoint of strength and membrane area, and from the viewpoint of sealing properties, the thickness is 1 than the end face of the membrane unit 7. It is preferable to project by 10 mm. In the case as shown in FIG. 8, the pressure loss becomes high and a force is applied to push the fluid separation element 9 from the inside to the outside. Therefore, the stock solution seal member 26 may be an elastic body such as rubber, but the bending strength is 50 MPa or more. High rigidity is more preferable. Examples of the highly rigid member include metal, plastic, and FRP, but stainless steel, noryl, polycarbonate, hard vinyl chloride, and the like that are less susceptible to corrosion such as rust generated during use are preferable. In addition, FRP is generally used for the exterior body of the fluid separation element. In this case, the stock solution seal member portion can be easily molded integrally by applying a mold at the time of molding the exterior body. FRP is particularly preferred because it does not need

なお、かん水の淡水化のように原液の濃度が比較的低い場合には、シール部分から原液が漏れても分離膜面上の濃度分布が大きくなることは少ないため、原液シール部材２６に多少の傷があったり１〜３０ｍｍ程度の切り欠きや周方向隙間のあるスナップリング状の原液シール部材であっても、塩除去率や造水量などの流体分離素子組立体としての性能を落とさずに使用することができる。たとえば、８インチサイズの流体分離素子組立体１を用いる場合には、流体分離素子組立体１内を３０×１０^−３ｍ^３／分以上の原液が流れれば、隙間からの原液の漏れの影響なく流体分離を行える。 When the concentration of the stock solution is relatively low, such as desalination of brine, the concentration distribution on the separation membrane surface is unlikely to increase even if the stock solution leaks from the seal portion. Even if it is a snap ring-shaped undiluted seal member with scratches or notches or circumferential gaps of about 1 to 30 mm, it can be used without degrading the performance as a fluid separation element assembly such as salt removal rate and water production can do. For example, when an 8 inch size fluid separation element assembly 1 is used, if a stock solution of 30 × 10 ⁻³ m ³ / min or more flows in the fluid separation element assembly 1, leakage of the stock solution from the gap Fluid separation can be performed without any influence.

テレスコープ防止板１０の外周面に原液シール部材を付設する場合は、図３および図４に示したように、原液シール部材２８を固定するためにテレスコープ防止板１０に凹部２７を設け、その凹部２７に原液シール部材２８を嵌入して装着することが好ましい。この場合の原液シール部材２８は、圧力容器１５の内周面に密着させ使用するため弾性体であることが好ましい。 When the stock solution seal member is attached to the outer peripheral surface of the telescope prevention plate 10, as shown in FIGS. 3 and 4, the telescope prevention plate 10 is provided with a recess 27 for fixing the stock solution seal member 28. The stock solution sealing member 28 is preferably fitted into the recess 27 for mounting. In this case, the stock solution sealing member 28 is preferably an elastic body to be used in close contact with the inner peripheral surface of the pressure vessel 15.

なお、流体分離素子９の外装体８とテレスコープ防止板１０の両方に、原液シール部材を設けてもよい。その場合、たとえば図９に示すように、テレスコープ防止板１０に付設された原液シール部材２８に、外装体８に付設した庇状に突き出た原液シール部材２６を押しつけると、効果的にシールすることができる。また、図１９に示すように、原水流れ方向に関して下流側に庇状に突出する原液シール部材２８をテレスコープ防止板１０に取り付けて、その原液シール部材２８に流体分離素子の外装体端部または外装体端部に取り付けられた原液シール部材に押しつけても、効果的にシールすることができる。このような場合、凹部２７の原液流れ方向に関して下流側の側縁を上流側側縁に比べ低くすることが好ましい。 Note that a stock solution sealing member may be provided on both the exterior body 8 and the telescope prevention plate 10 of the fluid separation element 9. In this case, for example, as shown in FIG. 9, when the stock solution sealing member 26 protruding in a bowl shape attached to the exterior body 8 is pressed against the stock solution sealing member 28 attached to the telescope prevention plate 10, the seal is effectively performed. be able to. Further, as shown in FIG. 19, a stock solution sealing member 28 protruding in a bowl shape downstream in the raw water flow direction is attached to the telescope prevention plate 10, and the exterior body end of the fluid separation element or the fluid separation element is attached to the stock solution sealing member 28. Even if it is pressed against the stock solution seal member attached to the end of the exterior body, it can be effectively sealed. In such a case, it is preferable to make the downstream side edge lower than the upstream side edge in the stock solution flow direction of the recess 27.

また、流体分離膜モジュールを用いて流体分離を行うと、原液が流体分離素子組立体内を下流側に流れるにしたがって、圧力損失が生じ、この圧力損失のために生じたスラスト荷重によって、流体分離素子組立体がテレスコープ状に変形して圧力容器の下流側に押しつけられる場合がある。８インチの流体分離素子組立体において５×１０5 Ｐａの圧力損失が生じた場合、流体分離素子組立体の端面にかかるスラスト荷重は、１．５×１０4 Ｎにもおよぶ。しかし、本発明の流体分離膜モジュールは、隣接する流体分離素子間にテレスコープ防止板があるので、このような変形を防止できる。このとき外装体８に設けた庇状の原液シール部材２６がテレスコープ防止板１０に設けた原液シール部材２８を圧縮するが、過剰な圧縮荷重は集水管３がテレスコープ防止板１０に接してその荷重を受けることが好ましい。 Further, when fluid separation is performed using the fluid separation membrane module, a pressure loss occurs as the stock solution flows downstream in the fluid separation element assembly, and the thrust load generated due to the pressure loss causes a fluid separation element. There is a case where the assembly is deformed into a telescope shape and pressed to the downstream side of the pressure vessel. When a pressure loss of 5 × 10 5 Pa occurs in the 8-inch fluid separation element assembly, the thrust load applied to the end face of the fluid separation element assembly reaches 1.5 × 10 4 N. However, the fluid separation membrane module of the present invention can prevent such deformation because there is a telescope prevention plate between adjacent fluid separation elements. At this time, the bowl-shaped stock solution seal member 26 provided on the outer casing 8 compresses the stock solution seal member 28 provided on the telescope prevention plate 10, but the excessively compressed load causes the water collecting pipe 3 to contact the telescope prevention plate 10. It is preferable to receive the load.

なお、圧力容器内の最上流にある流体分離素子組立体の上流側にあるテレスコープ防止板には、集水管３入口での運転圧力と透過水圧力との差圧によるスラスト荷重しかかからないため、十分なスラスト荷重が得られない。その場合には前述したように、押圧部材を設けることが好ましい。これにより、テレスコープ防止板に付設された原液シール部材を、流体分離素子端面の原液シール部材にしっかりと押しつけ、原液をシールすることができる。押しつける力は、８インチの流体分離素子組立体の場合２５０Ｎ程度、４インチの流体分離素子の場合７０Ｎ程度でよい。 In addition, since the telescope prevention plate on the upstream side of the fluid separation element assembly in the uppermost stream in the pressure vessel only takes a thrust load due to the differential pressure between the operating pressure at the inlet of the water collection pipe 3 and the permeated water pressure, A sufficient thrust load cannot be obtained. In that case, as described above, it is preferable to provide a pressing member. Thereby, the stock solution sealing member attached to the telescope prevention plate can be firmly pressed against the stock solution sealing member on the end face of the fluid separation element to seal the stock solution. The pressing force may be about 250 N for an 8-inch fluid separation element assembly and about 70 N for a 4-inch fluid separation element.

本発明においては、以上に述べた各態様のほかに、さらに次のような各種態様を採ることができる。まず、テレスコープ防止板の外周部の形状についてであるが、たとえば図１０に示すように、テレスコープ防止板５０の外周部に、流体分離素子９側に庇状に突き出た環状突出部５１を設けてもよい。テレスコープ防止板５０の外周面には、図４に示したと同様の凹部２７が設けられ、凹部２７に原液シール部材２８が嵌着されている。このような構成にすると、環状突出部５１を利用してテレスコープ防止板５０をより容易に流体分離素子９に嵌め込むことができるようになり、着脱が容易化される。 In the present invention, in addition to the aspects described above, the following various aspects can be further employed. First, regarding the shape of the outer peripheral portion of the telescope prevention plate, for example, as shown in FIG. 10, an annular protrusion 51 protruding in a hook shape toward the fluid separation element 9 is provided on the outer periphery of the telescope prevention plate 50. It may be provided. A concave portion 27 similar to that shown in FIG. 4 is provided on the outer peripheral surface of the telescope prevention plate 50, and a stock solution seal member 28 is fitted into the concave portion 27. With such a configuration, the telescopic prevention plate 50 can be more easily fitted into the fluid separation element 9 by using the annular protrusion 51, and attachment / detachment is facilitated.

また、上記環状突出部５１を利用して、原液シールの一層の確実化をはかることもできる。たとえば図１１（イ）に示すように、環状突出部５１と流体分離素子９の外装体８の外周面との間に原液シール部材５２を介装して、この間における原液の短絡を抑えることができる。また、図１１（ロ）に示すように、環状突出部５１の外周面から流体分離素子９の外装体８の外周面にかけて、テープや弾性体からなる原液シール部材５３で覆う構造とすることもでき、これによって同様にこの部分における原液の短絡を抑えることができる。 In addition, it is possible to further ensure the stock solution seal by using the annular protrusion 51. For example, as shown in FIG. 11 (a), a stock solution seal member 52 is interposed between the annular protrusion 51 and the outer peripheral surface of the exterior body 8 of the fluid separation element 9 to suppress short circuit of the stock solution during this period. it can. Further, as shown in FIG. 11 (b), a structure may be adopted in which the outer peripheral surface of the annular protrusion 51 is covered with a stock solution sealing member 53 made of a tape or an elastic body from the outer peripheral surface of the exterior body 8 of the fluid separation element 9. This can similarly suppress the short circuit of the stock solution in this part.

また、テレスコープ防止板の外周面に凹部２７を設け、その凹部２７に原液シール部材２８を装着する構造に関し、図４または図９に示した構造のほかに、たとえば図１２に示すような構造としてもよい。図１２においては、テレスコープ防止板６０の外周面に、環状に延びる高さの高い上流側の側壁６１と高さの低い下流側の側壁６２が設けられ、両側壁６１、６２間が凹部２７に形成され、凹部２７に原液シール部材２８が嵌着されている。両側壁６１、６２と、対応するテレスコープ防止板６０の側面との間には適当な距離が設けられている。そして、本実施態様では、上流側の流体分離素子９の外装体８が庇状に突き出されてその先端が上流側の側壁６１の側面に当接され、下流側の流体分離素子９の外装体８またはその端部に設けられた原液シール部材２６が、下流側の側壁６２周囲に嵌合されるとともにその先端が原液シール部材２８の下流側の側面に当接されている。このような構成により、原液のシール性が適切に高められると同時に、上下流の流体分離素子９と、間に介在されるテレスコープ防止板６０との接続が容易化される。 In addition to the structure shown in FIG. 4 or FIG. 9, for example, a structure as shown in FIG. 12 is provided for a structure in which a recess 27 is provided on the outer peripheral surface of the telescope prevention plate and the stock solution sealing member 28 is attached to the recess 27. It is good. In FIG. 12, an upstream side wall 61 having a high height and a downstream side wall 62 having a low height are provided on the outer peripheral surface of the telescope prevention plate 60, and a recess 27 is provided between both side walls 61, 62. The stock solution sealing member 28 is fitted in the recess 27. An appropriate distance is provided between the side walls 61 and 62 and the side surface of the corresponding telescope prevention plate 60. In this embodiment, the outer casing 8 of the upstream fluid separation element 9 is protruded in a bowl shape, the tip of which is in contact with the side surface of the upstream side wall 61, and the outer casing of the downstream fluid separation element 9. 8 or a stock solution seal member 26 provided at the end thereof is fitted around the downstream side wall 62 and its tip is in contact with the downstream side surface of the stock solution seal member 28. With such a configuration, the sealability of the stock solution is appropriately improved, and at the same time, the connection between the upstream and downstream fluid separation elements 9 and the telescope prevention plate 60 interposed therebetween is facilitated.

さらに、原液の短絡をより確実に抑えるために、図１３に示すような各構造を採用することもできる。図１３（イ）に示す構造においては、テレスコープ防止板７０の外周面に形成した凹部７１に装着された原液シール部材７２を、その下流側の側面に溝７３を有する形状に形成し、この溝７３に、下流側の流体分離素子９の外装体８の端部に設けられた原液シール部材２６の先端部が嵌入されている。また、図１３（ロ）に示す構造においては、テレスコープ防止板８０の外周面に、圧力容器１５の内周面に密着される原液シール部材８１が装着される凹部８２が形成されるとともに、その下流側に、さらに原液の短絡を防止するための専用の原液シール部材８３およびそれを装着する凹部８４が設けられている。この原液シール部材８３が、庇状に突き出された、下流側の流体分離素子９の外装体８の端部に設けられた原液シール部材２６の内周面に当接され、この部分がシールされる。原液シール部材８３としては、たとえば図１３（ハ）に示すような断面形状のものを使用できる。ただし、このような形状の原液シール部材８３のほかに、たとえば図１３（ニ）に示すように、Ｏリング８５を用いてもよい。また、圧力容器１５の内周面の位置と、流体分離素子９の外周面の位置との関係によっては、たとえば図１３（ホ）に示すように、テレスコープ防止板９０の下流側の側面に環状溝９１とその環状溝９１内に装着される、弾性体等からなるシール部材９２とを設け、このシール部材９２に、下流側の流体分離素子９の外装体８の端部に設けられた原液シール部材２６を当接させるようにしてもよい。このような構造にすることにより、テレスコープ防止板の外周部分における原液のシール性がより高められる。 Furthermore, in order to suppress the short circuit of the undiluted solution more reliably, each structure as shown in FIG. 13 can be adopted. In the structure shown in FIG. 13 (a), a stock solution seal member 72 mounted in a recess 71 formed on the outer peripheral surface of the telescope prevention plate 70 is formed into a shape having a groove 73 on the downstream side surface thereof. The leading end portion of the stock solution seal member 26 provided at the end portion of the exterior body 8 of the downstream fluid separation element 9 is fitted into the groove 73. Further, in the structure shown in FIG. 13 (b), a recess 82 is formed on the outer peripheral surface of the telescope prevention plate 80 to which a stock solution seal member 81 that is in close contact with the inner peripheral surface of the pressure vessel 15 is mounted. On the downstream side, a dedicated stock solution seal member 83 for preventing a short circuit of the stock solution and a recess 84 for mounting it are provided. This stock solution sealing member 83 is brought into contact with the inner peripheral surface of the stock solution sealing member 26 provided at the end portion of the exterior body 8 of the downstream fluid separation element 9 protruding in a bowl shape, and this portion is sealed. The As the stock solution sealing member 83, for example, one having a cross-sectional shape as shown in FIG. However, in addition to the stock solution seal member 83 having such a shape, an O-ring 85 may be used as shown in FIG. Further, depending on the relationship between the position of the inner peripheral surface of the pressure vessel 15 and the position of the outer peripheral surface of the fluid separation element 9, for example, as shown in FIG. An annular groove 91 and a seal member 92 made of an elastic body or the like mounted in the annular groove 91 are provided, and the seal member 92 is provided at the end of the exterior body 8 of the fluid separation element 9 on the downstream side. The stock solution seal member 26 may be brought into contact. By adopting such a structure, the sealability of the stock solution at the outer peripheral portion of the telescope prevention plate is further enhanced.

なお、流体分離素子９の外装体８の端部に設ける原液シール部材２６の先端の形状としては、たとえば図１４（イ）に示すような平坦な先端面２６ａ、１コーナー部に丸みまたは面取りが形成された先端面２６ｂ、全体的に丸みをもつ先端面２６ｃのいずれの形状を採用してもよい。 As the shape of the tip of the stock solution sealing member 26 provided at the end of the outer casing 8 of the fluid separation element 9, for example, a flat tip surface 26a as shown in FIG. Any shape of the formed tip surface 26b and the tip surface 26c having a roundness as a whole may be adopted.

また、流体分離素子９の外装体８の外周面に原液シール部材２５を設ける構造に関し、図７に示した構造のほかに、たとえば図１５に示すように、外装体８自身に環状の溝１００を設け、この溝１００に原液シール部材１０１を着脱可能に装着し、それを圧力容器１５の内周面に密着させるようにしてもよい。 Further, regarding the structure in which the stock solution sealing member 25 is provided on the outer peripheral surface of the exterior body 8 of the fluid separation element 9, in addition to the structure shown in FIG. 7, for example, as shown in FIG. The stock solution seal member 101 may be detachably mounted in the groove 100 so as to be in close contact with the inner peripheral surface of the pressure vessel 15.

また、流体分離素子９の外装体８の外周面と、圧力容器１５の内周面との間の原液シール構造として、たとえば図１６に示すような構造も採用できる。図１６においては、流体分離素子９の外装体８の外周面の、上流側のテレスコープ防止板１０に近い位置に、ネット等からなる抵抗材１１１と、その抵抗材１１１が下流側にずれないように固定する、テープや弾性体等からなる固定部材１１２が設けられている。抵抗材１１１により、外装体８の外周面と圧力容器１５の内周面との隙間を流れる流体に適切な抵抗が付与され、原液の滞留による微生物の発生や原液中の有機物の腐敗等を防止することができるだけの微量の流量を確保しつつ、この隙間部分を多量の原液が流れることを防止して、流体分離素子９による所望の分離性能を維持することができる。 Moreover, as a stock solution seal structure between the outer peripheral surface of the outer casing 8 of the fluid separation element 9 and the inner peripheral surface of the pressure vessel 15, for example, a structure as shown in FIG. In FIG. 16, the resistance material 111 made of a net or the like and the resistance material 111 are not shifted downstream on the outer peripheral surface of the exterior body 8 of the fluid separation element 9 at a position close to the upstream telescope prevention plate 10. A fixing member 112 made of a tape or an elastic body is fixed. The resistance material 111 provides an appropriate resistance to the fluid flowing through the gap between the outer peripheral surface of the exterior body 8 and the inner peripheral surface of the pressure vessel 15 to prevent generation of microorganisms due to retention of the stock solution, decay of organic matter in the stock solution, and the like. In addition, it is possible to maintain a desired separation performance by the fluid separation element 9 by preventing a large amount of undiluted solution from flowing through the gap while securing a minute flow rate that can be achieved.

さらに、テレスコープ防止板１０の接続管部１４は、前述したように膜ユニット７の集水管３に内挿されるが、両者を螺合によって接続するようにしてもよい。たとえば図１７に示すように、テレスコープ防止板１２０の接続管部１２１の外周面と集水管１２２の内周面にねじを切り、ねじ部１２３で両者を接合するようにしてもよい。図１７に示す例では、ねじ部１２３を設けねじ結合することで、外装体８端部に設けた原液シール部材２６とテレスコープ防止板１２０との間のシール性が高まり、流体分離素子９と圧力容器１５との隙間へ原液がもれるのを防ぐ。 Furthermore, although the connecting pipe portion 14 of the telescope prevention plate 10 is inserted into the water collecting pipe 3 of the membrane unit 7 as described above, they may be connected by screwing. For example, as shown in FIG. 17, screws may be cut on the outer peripheral surface of the connection pipe portion 121 of the telescope prevention plate 120 and the inner peripheral surface of the water collecting pipe 122, and both may be joined by a screw portion 123. In the example shown in FIG. 17, by providing the screw portion 123 and screwing together, the sealing performance between the stock solution sealing member 26 provided at the end of the outer package 8 and the telescope prevention plate 120 is increased, and the fluid separation element 9 and The stock solution is prevented from leaking into the gap with the pressure vessel 15.

なお、以上の各実施態様においては、テレスコープ防止板は、接続管部を含めて一体物として構成されている例を示したが、別体構成とすることも可能である。たとえば図１８に示すように、テレスコープ防止板１３０の円板部１３１と接続管部１３２とを、分割可能な別体に形成し、両者を組み立ててテレスコープ防止板１３０を構成することができる。図に示す構造では、円板部１３１の内周面に形成された段部１３１ａと接続管部１３２の外周面に形成された段部１３２ａとが、互いに、スラスト荷重を受ける方向に（軸方向に）噛み合わされ、テレスコープ防止板１３０全体を構成している。 In each of the above embodiments, the telescope prevention plate is shown as an example including the connecting pipe portion, but it may be a separate structure. For example, as shown in FIG. 18, the disc part 131 and the connecting pipe part 132 of the telescope prevention plate 130 can be formed separately and can be assembled to form the telescope prevention plate 130. . In the structure shown in the figure, the step portion 131a formed on the inner peripheral surface of the disc portion 131 and the step portion 132a formed on the outer peripheral surface of the connecting pipe portion 132 are mutually in a direction to receive a thrust load (axial direction). And the telescope prevention plate 130 as a whole.

本発明の一実施態様に係る流体分離素子組立体の部分分解斜視図である。It is a partial exploded perspective view of the fluid separation element assembly concerning one embodiment of the present invention. 図１に示す流体分離素子用テレスコープ防止板の拡大縦断面図である。FIG. 2 is an enlarged longitudinal sectional view of a telescope prevention plate for a fluid separation element shown in FIG. 1. 本発明の一実施態様に係る流体分離膜モジュールの縦断面図である。It is a longitudinal cross-sectional view of the fluid separation membrane module which concerns on one embodiment of this invention. 図３の流体分離膜モジュールの拡大部分縦断面図である。FIG. 4 is an enlarged partial longitudinal sectional view of the fluid separation membrane module of FIG. 3. 本発明の一実施態様に係る押圧部材を備えた流体分離膜モジュールの部分縦断面図である。It is a fragmentary longitudinal cross-sectional view of the fluid separation membrane module provided with the press member which concerns on one embodiment of this invention. 本発明の他の実施態様に係る押圧部材を備えた流体分離膜モジュールの部分縦断面図である。It is a fragmentary longitudinal cross-sectional view of the fluid separation membrane module provided with the press member which concerns on the other embodiment of this invention. 本発明の一実施態様に係る原液シール部材を備えた流体分離膜モジュール部分縦断面図である。It is a fluid separation membrane module partial longitudinal cross-sectional view provided with the stock solution sealing member which concerns on one embodiment of this invention. 本発明の他の実施態様に係る原液シール部材を備えた流体分離膜モジュールの部分縦断面図である。It is a fragmentary longitudinal cross-sectional view of the fluid separation membrane module provided with the stock solution sealing member which concerns on the other embodiment of this invention. 本発明のさらに別の実施態様に係る原液シール部材を備えた流体分離膜モジュールの部分縦断面図である。It is a fragmentary longitudinal cross-sectional view of the fluid separation membrane module provided with the stock solution sealing member which concerns on another embodiment of this invention. 本発明の一実施態様に係るテレスコープ防止板を備えた流体分離膜モジュールの部分縦断面図である。It is a fragmentary longitudinal cross-sectional view of the fluid separation membrane module provided with the telescope prevention board which concerns on one embodiment of this invention. 図１０の流体分離膜モジュールの原液シール性能の強化例を示す部分縦断面図である。It is a fragmentary longitudinal cross-section which shows the example of reinforcement | strengthening of the stock solution sealing performance of the fluid separation membrane module of FIG. テレスコープ防止板の外周部における原液シール構造の別の例を示す流体分離膜モジュール部分縦断面図である。It is a fluid separation membrane module partial longitudinal cross-sectional view which shows another example of the stock solution seal structure in the outer peripheral part of a telescope prevention board. テレスコープ防止板の外周部における原液シール構造のさらに別の例を示す流体分離膜モジュール部分縦断面図である。It is a fluid separation membrane module partial longitudinal cross-sectional view which shows another example of the stock solution seal structure in the outer peripheral part of a telescope prevention board. 外装体の端部に設けられた原液シール部材の先端部形状例を示す部分縦断面図である。It is a fragmentary longitudinal cross-section which shows the example of the front-end | tip part shape of the stock solution sealing member provided in the edge part of an exterior body. 外装体の外周面への原液シール部材の別の設置構造を示す流体分離膜モジュールの部分縦断面図である。It is a fragmentary longitudinal cross-sectional view of the fluid separation membrane module which shows another installation structure of the stock solution sealing member to the outer peripheral surface of an exterior body. 外装体の外周面に設けられる原液シール部材の別の構造を示す流体分離膜モジュールの部分縦断面図である。It is a fragmentary longitudinal cross-sectional view of the fluid separation membrane module which shows another structure of the stock solution sealing member provided in the outer peripheral surface of an exterior body. テレスコープ防止板の接続管部と集水管との別の接続構造を示す流体分離膜モジュールの部分縦断面図である。It is a partial longitudinal cross-sectional view of the fluid separation membrane module which shows another connection structure of the connection pipe part of a telescope prevention board, and a water collection pipe. 分割型テレスコープ防止板を用いた流体分離膜モジュールの部分縦断面図である。It is a partial longitudinal cross-sectional view of the fluid separation membrane module using a division | segmentation type telescope prevention board. 本発明のさらに別の実施態様に係る原液シール部材を備えた流体分離膜モジュールの部分縦断面図である。It is a fragmentary longitudinal cross-sectional view of the fluid separation membrane module provided with the stock solution sealing member which concerns on another embodiment of this invention.

Explanation of symbols

１流体分離素子組立体
２集水孔
３集水管
４分離膜
５透過液流路材
６原液流路材
７膜ユニット
８外装体
９流体分離素子
１０テレスコープ防止板
１１原液流路
１２円板部
１３透過液流路
１４接続管部
１５圧力容器
１６蓋体
１７金属ばね
１８アジャストボルト
１９原液混入防止部材
２０原液
２１透過液
２５原液シール部材
２６原液シール部材
２７凹部
２８原液シール部材
４０流体分離膜モジュール
４１リブ
５０テレスコープ防止板
５１環状突出部
５２、５３原液シール部材
６０テレスコープ防止板
６１、６２側壁
７０テレスコープ防止板
７１凹部
７２原液シール部材
７３溝
８０テレスコープ防止板
８１原液シール部材
８２凹部
８３原液シール部材
８４凹部
８５Ｏリング
９０テレスコープ防止板
９１環状溝
９２シール部材
２６ａ、２６ｂ、２６ｃ原液シール部材２６の先端面
１００環状溝
１０１原液シール部材
１１１抵抗材
１１２固定部材
１２０テレスコープ防止板
１２１接続管部
１２２集水管
１２３ねじ部
１３０テレスコープ防止板
１３１円板部
１３２接続管部
１３１ａ、１３２ａ段部 DESCRIPTION OF SYMBOLS 1 Fluid separation element assembly 2 Water collecting hole 3 Water collecting pipe 4 Separation membrane 5 Permeate flow path material 6 Stock solution flow path material 7 Membrane unit 8 Exterior body 9 Fluid separation element 10 Telescope prevention plate 11 Stock solution flow path 12 Disk part 13 Permeate flow path 14 Connection pipe part 15 Pressure vessel 16 Lid 17 Metal spring 18 Adjustment bolt 19 Stock solution mixing prevention member 20 Stock solution 21 Permeate 25 Stock solution seal member 26 Stock solution seal member 27 Recess 28 Stock solution seal member 40 Fluid separation membrane module 41 Rib 50 Telescope Prevention Plate 51 Annular Protrusion 52, 53 Stock Solution Seal Member 60 Telescope Prevention Plate 61, 62 Side Wall 70 Telescope Prevention Plate 71 Recess 72 Stock Solution Seal Member 73 Groove 80 Telescope Prevention Plate 81 Stock Solution Seal Member 82 Recess 83 Stock solution seal member 84 Recess 85 O-ring 90 Telescope prevention plate 91 Annular groove 92 Seal Materials 26a, 26b, 26c End surface 100 of stock solution seal member 26 Annular groove 101 Stock solution seal member 111 Resistance material 112 Fixing member 120 Telescope prevention plate 121 Connection tube portion 122 Water collection tube 123 Screw portion 130 Telescope prevention plate 131 Disc portion 132 Connection pipe part 131a, 132a Step part

Claims

A membrane unit including a separation membrane is wound around a water collecting pipe, and a fluid separation element in which the outer peripheral side of the wound membrane unit is covered with an exterior body, and at least one end side of the fluid separation element is detachable A fluid separation element assembly comprising a telescope prevention plate attached to a telescope prevention plate and a concentrate seal member attached to a recess on the outer peripheral surface of the telescope prevention plate, wherein the concave portion on the outer peripheral surface of the telescope prevention plate The side edge height located on the upstream side with respect to the flow direction of the stock solution is higher than that located on the downstream side, and the stock solution seal member mounted in the recess on the outer peripheral surface of the telescope prevention plate serves as the fluid separation element. A fluid separation element assembly which is in contact with each other.

2. The fluid separation element assembly according to claim 1, wherein the stock solution seal member mounted in the concave portion on the outer peripheral surface of the telescope prevention plate is in contact with an end of the exterior body of the fluid separation element.

The fluid separation element is provided with a second stock solution seal member at the axial end of the exterior body, and the second stock solution seal member is mounted in a recess on the outer peripheral surface of the telescope prevention plate. The fluid separation element assembly according to claim 1, wherein the fluid separation element assembly is in contact with the fluid separation element assembly.

4. The fluid separation element assembly according to claim 3, wherein the second stock solution seal member provided at the end portion in the axial direction of the exterior body projects in a bowl shape from the end portion in the axial direction of the exterior body.

The telescope prevention plate includes a disc portion having a stock solution flow path, and a connecting pipe portion having a permeate flow path provided at the center of the disc portion, and the disc portion includes radial ribs and the ribs. The fluid separation element according to any one of claims 1 to 4, wherein a stock solution flow path is formed, and the disk part and the connecting pipe part are formed integrally or separately. Assembly.

The connection pipe part of the telescope prevention plate is inserted in the water collecting pipe of the fluid separation element and is detachably mounted, and a raw material mixture preventing member to the water collecting pipe is provided in the connection pipe part. The fluid separation element assembly according to any one of 1 to 5.

The fluid separation element assembly according to claim 6, wherein the connecting pipe portion and the water collecting pipe are screwed together.

A fluid separation membrane module, wherein a plurality of fluid separation element assemblies according to any one of claims 1 to 7 are accommodated in series in a pressure vessel.

Telescope prevention plates are detachable between the fluid separation element and upstream of the fluid separation element located on the most upstream side and downstream of the fluid separation element located on the most downstream side. The fluid separation membrane module according to claim 8, wherein the fluid separation membrane module is mounted.

The pressure vessel has lids at both ends, and a member for pressing the telescope prevention plate is provided between the lid and the telescope prevention plate located on the most upstream side in the stock solution flow direction. The fluid separation membrane module according to claim 9.

A membrane unit including a separation membrane is wound around the water collecting pipe, and the fluid separation element is connected between the fluid separation elements when the outer peripheral side of the wound membrane unit is covered with an exterior body. The telescope prevention plate is provided with a recess for mounting the stock solution seal member on the outer peripheral surface of the telescope prevention plate, and the recess has a side edge height located on the upstream side with respect to the flow direction of the stock solution. The liquid seal member, which is higher than that located on the side and is connected to the fluid separation element, is attached to the concave portion of the outer peripheral surface of the telescope prevention plate and contacts the fluid separation element. Scope prevention plate.