Products

Vacuum Insulated Pipe

Vacuum Insulated Pipe

Introduction

Vacuum insulated pipe, also called vacuum-jacketed pipe or VIP, is used to transfer cryogenic liquids, such as LHe, LN2, LH2, LAr, LNG, etc. To minimize heat transfer and realize the efficient and cost-effective transfer of cryogenic liquids, VIP is double-walled. The inner process pipe carries the cryogenic liquid. It is wrapped with multiple layers of super insulation and a non-conductive spacer. This creates a space between the two pipes that is “pumped down” using a vacuum pump to create a static vacuum shield. In addition to the insulation material, the getter material will further maintain and protect the vacuum.

Compared with traditional cryogenic fluid transfer line, the heat leakage value of VIP is only 1/10-1/20 of traditional pipes. VIP can significantly save energy and cost for customers. VIPs are extensively applied in LNG, air separation, gases, aviation, electronics, superconductor, chips, automation assembly, food & beverage, pharmacy, hospital, biobank, rubber, new material manufacturing chemical engineering, iron & steel, and scientific research etc.

 

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Specifications

Design temperature 

-270℃~90℃

Ambient temperature 

-50℃~90℃

Medium

LO2, LHe, LN2, LH2, LAr, LNG, etc.

Pipe Size

DN10-DN2000

End Connection 

Bayonet (with clamp or flange), Welding

Type

Rigid or Flexible

Main Components

Inner process pipe, Outer Jacket Pipe, Annular Spacer, Bellow, Chemical Getter, End Connection Assembly   

Insulation

High vacuum & multi-layer insulation

Vacuum leakage

≤1X10-10Pa*m3/S

Vacuum 

≤4.0X10-3Pa

Material

Stainless steel

Applicable Standards 

EN13408, ASME B31.3.