Vacuum Insulated Pipe
VACUUM INSULATED PIPE
Vacuum insulated pipe, also called 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 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 0.05~0.035 times of traditional one’s. VIP can significantly save energy and cost for customers. So VIPs are extensively applied in 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.
Rigid VIP
RIGID VACUUM INSULATED PIPE
Each section of rigid VIP is constructed of a rigid inner and outer pipe. Generally, there are three connection types between pipes. When VIP need be connected to equipment, storage tank and so on, the connection joint can be customized according to customer requirements.
SPECIFICATIONS
Design temperature |
-270℃~90℃ |
Ambient temperature |
-50℃~90℃ |
Medium |
LO2, LHe, LN2, LH2, LAr, LG, LNG, etc. |
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. Other code upon request |
TYPE OF CONNECTION
Bayonet connection with clamps |
|||
Bayonet connection with flanges and bolts |
|||
Welded connection |
|||
Nominal diameter of inner pipe |
DN10(3/8”)-DN25(1”) |
DN10(3/8”)-DN80(3”) |
DN10(3/8”)-DN500(20”) |
Design pressure |
≤8 bar |
≤16 bar |
≤64 bar |
Standard length |
8 meter/pcs or customized |
||
Material |
As client requested |
RVIP FLOW RATE
Line size |
gpm |
Ipm |
Ibs/min |
1/2” (DN15) |
7.66 |
29 |
51 |
1” (DN25) |
29.6 |
112 |
199 |
2” (DN50) |
159 |
602 |
1,072 |
3” (DN80) |
441 |
1,669 |
2,975 |
4” (DN100) |
890 |
3,369 |
6,004 |
6” (DN150) |
2,417 |
9,149 |
16,307 |
8” (DN200) |
4,883 |
18,484 |
32,945 |
10” (DN250) |
8,740 |
33,084 |
58,967 |
12” (DN300) |
13,700 |
51,860 |
92,432 |
16” (DN400) |
27,700 |
104,855 |
166,477 |
20” (DN500) |
58,950 |
223,150 |
354,289 |
Date based on: 1, Maxi. recommended flow rate. 2, 100 feet of rigid piping while maintaining less than 5 psi friction pressure drop @ 60 psi operating pressure. |
VIP HEAT LEAK (Btu/hr*ft)
Line size |
LNG |
LOX |
LN2 |
LH2 |
LHe |
1/2” (DN15) |
0.199(0.05) |
0.222(0.06) |
0.236(0.06) |
0.298 (0.08) |
0.272 (0.07) |
1” (DN25) |
0.290(0.08) |
0.324(0.09) |
0.344(0.10) |
0.434 (0.12) |
0.394 (0.11) |
2” (DN50) |
0.490(0.14) |
0.547(0.16) |
0.445(0.13) |
0.734 (0.21) |
0.659 (0.19) |
3” (DN80) |
0.704(0.20) |
0.785(0.23) |
0.834(0.24) |
1.053 (0.30) |
0.942 (0.27) |
4” (DN100) |
0.892(0.26) |
0.996(0.29) |
1.058(0.31) |
1.336 (0.39) |
1.192 (0.34) |
6” (DN150) |
1.296(0.37) |
1.446(0.42) |
1.537(0.45) |
1.940 (0.56) |
1.727 (0.50) |
8” (DN200) |
1.673(0.49) |
1.867(0.54) |
1.984(0.58) |
2.504 (0.73) |
2.226 (0.65) |
10” (DN250) |
2.078(0.60) |
2.319(0.67) |
2.464(0.72) |
3.110 (0.91) |
2.762 (0.80) |
12” (DN300) |
2.431(0.71) |
2.714(0.79) |
2.884(0.84) |
3.640 (1.06) |
3.236 (0.94) |
16” (DN400) |
2.760(0.86) |
3.015(0.88) |
3.456(1.01) |
4.236(1.24) |
3.818(1.12) |
20” (DN500) |
3.045(0.95) |
3.415(1.02) |
4.015(1.18) |
4.815(1.42) |
4.465(1.31) |
Date is provided for estimation only. 1, Date based on straight pipe only (no internal spacers, fittings, or bayonets). 2, For system estimates with average components, increase per foot data by 20%. |
Flexible VIP
FLEXIBLE VACUUM INSULATED PIPE
Flexible VIP is an indispensable tool for the safe, efficient, and economical transfer of cryogenic liquids. Compared with rigid VIP, it has good bending ability and can meet the installation requirements of various site conditions. Our flexible VIP has applications in laboratory, industrial, instrumentation or fueling.
SPECIFICATIONS
Design temperature |
-270℃~90℃ |
Ambient temperature |
-50℃~90℃ |
Medium |
LO2, LHe, LN2, LH2, LAr, LG, LNG, etc. |
Insulation |
High vacuum & multi-layer insulation |
Vacuum leakage |
≤1X10-10Pa*m3/S |
Vacuum |
≤4.0X10-3Pa |
Material |
Stainless steel |
Adsorbent & Gettering Material |
Yes |
Test pressure |
1.15 times design pressure |
Applicable standards |
EN13408, ASME B31.3. Other code upon request |
TYPE OF CONNECTION
Bayonet connection with clamps |
|||
Bayonet connection with flanges and bolts |
|||
Welded connection |
|||
Nominal diameter of inner pipe |
Bayonet with clamps DN10(3/8”)-DN25(1”) |
Bayonet with flanges and bolts DN10(3/8”)-DN80(3”) |
Welded connection DN10(3/8”)-DN150(6”) |
Design pressure |
≤8 bar |
≤16 bar |
≤40 bar |
Standard length |
Customized |
||
Material |
As client requested |
FVIP FLOW RATE
Line size |
gpm |
Ipm |
Ibs/min |
3/8” (DN8) |
4.78 |
18 |
32 |
1/2” (DN15) |
5.88 |
22.2 |
39.3 |
3/4” (DN20) |
6.82 |
25.8 |
46 |
1” (DN25) |
12.4 |
46.9 |
83 |
1-1/4” (DN32) |
26.3 |
99.6 |
177 |
1-1/2” (DN40) |
67.8 |
256.6 |
454.2 |
2” (DN50) |
90.4 |
342 |
610 |
2-1/2” (DN65) |
190.6 |
721.4 |
1,277.02 |
3” (DN80) |
400.6 |
1,516.4 |
2,684.02 |
4” (DN100) |
900.8 |
3,409.8 |
6,035.36 |
5” (DN125) |
1,600 |
6,056.6 |
10,720 |
6” (DN150) |
5,000 |
18,927.1 |
33,500 |
Date based on: 1, Maxi. recommended flow rate. 2, 100 feet of rigid piping while maintaining less than 5 psi friction pressure drop @ 60 psi operating pressure. |