Fluid separation element assembly

A fluid separation element assembly comprising:

• a fluid separation element having a membrane unit and a wrapping material formed around said membrane unit, said membrane unit being formed by a separation membrane, a permeate carrier material and a feed carrier material which are spirally wound around a permeate collection tube;
• an anti-telescoping plate attached to at least one end of said fluid separation element at a condition free to be detached;
• and
• a seal ring attached on a periphery of said anti-telescoping plate for sealing a gap between said periphery of said anti-telescoping plate and an inner surface of a pressure vessel containing said fluid separation element and said anti-telescoping plate.

A fluid separation element assembly comprising:

• a fluid separation element having a membrane unit and a wrapping material formed around said membrane unit, said membrane unit being formed of a separation membrane, a permeate carrier material and a feed carrier material which are spirally wound around a permeate collection tube;
• an anti-telescoping plate attached to at least one end of said fluid separation element with freedom to be detached;
• and
• feed fluid seal means sealingly connected across a gap between said fluid separation element and said anti-telescoping plate, for preventing feed fluid from leaking through said gap, wherein said feed fluid seal means comprises a ring member provided on at least one end of said wrapping material, and projecting in the axial direction of said fluid separation element, wherein said ring member is composed of a material having a flexural strength of 50 Mpa or more, and wherein said ring member is formed as a divided ring having seams at positions in the circumferential direction of said ring member.

A fluid separation element assembly comprising a fluid separation element having a membrane unit and a wrapping material formed around said membrane unit, said membrane unit being formed of a separation membrane, a permeate carrier material and a feed carrier material which are spirally wound around a permeate collection tube;

• an anti-telescoping plate attached to at least one end of said fluid separation element with freedom to be detached;
• and
• feed water seal means sealingly connected across a gap between said fluid separation element and said anti-telescoping plate, for preventing fluid feed from leaking through said gap,
• wherein said seal means is a seal ring and is attached at a periphery of said anti-telescoping plate, and wherein said seal ring is attached in a groove formed on said periphery of said anti-telescoping plate, wherein a side wall located at a position upstream of said groove in the flow direction of said feed water is taller than a side wall located at a position downstream of said groove in the flow direction of said feed water, and said seal ring attached in said groove comes into contact with said fluid separation element.