CHART Cryo-Cyl80HP, Руководство по эксплуатации продукта

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Operations Product Manual - Liquid Cylinders
Liquid Withdrawal
Cryogenic liquid can be pressure transferred from the liquid
cylinder to other cryogenic equipment that operates at a
lower pressure than the liquid cylinder. To make a liquid
transfer follow this procedure:
Caution! Before making a liquid transfer
be sure that protective
eyeglasses and gloves are being
worn. If the transfer is being
made to an open top vessel, the
transfer pressure should be as
low as possible and a phase
separator should be used to
eliminate splashing and hose
whip.
1 Connect the transfer hose to the liquid valve of the
cylinder
2
Connect or place the other end of the hose onto the inlet
of the cryogenic equipment that will receive liquid.
Atmospheric dewars are filled with a phase separator
mounted to the open end of the hose.
3
Refer to the receiving equipment manual for procedures
to open the fill valve and vent valve of the receiving
equipment.
4
Open the liquid valve on the liquid cylinder. This valve
can be adjusted to obtain the proper liquid flow rate.
5
When the transfer is complete, close the receiving
equipment’s valve. Close the liquid valve on the
cylinder and relieve pressure from the hose.
6 Disconnect or remove the hose from the receiving
equipment.
Dura-Cyl ® LP Liquid Cylinder Filling Weight Table
Model
Argon Nitrogen Oxygen
LBS Kg LBS Kg LBS Kg
Dura-Cyl 120 LP* 351 159 201 91 285 129
Dura-Cyl 180 LP* 573 260 327 148 465 211
Dura-Cyl 200 LP* 611 277 349 158 496 225
Dura-Cyl 230 LP* 702 318 401 182 570 258
* Relief valve setting at 22 psig (1.5 barg).
Note:
It is important to fill all liquid cylinders by their published fill weights to comply with the DOT - 4L
regulations. There is however, one exception to the filling regulation (CFR49 section 173.320): If you are
operating under the 25.3 psig (40 psia) relief valve setting (22 psig is typically used in liquid service), you
are not required to fill by weight so the operator can fill the liquid cylinder to “vent full”. This is allowed
because the liquid will not have a chance to grow as the relief valve is set very low and hence there is
minimal risk of liquid dispensing out the safety relief valve.
Dura-Cyl
®
MCR MP Liquid Cylinders
The Dura-Cyl MCR MP liquid cylinders are functionally
the same and only vary in capacity. They are designed to
transport, store and deliver liquid oxygen, nitrogen or argon
as a cryogenic liquid or gas. The common application for
these liquid cylinders is to provide gas at a pressure around
100 psi (6.9 bar). The liquid cylinder will build and maintain
pressure at the pressure control regulator setting of 125
psi (8.6 bar). If the pressure exceeds 140 psi (9.7 bar) the
economizer portion of the regulator will supply gas to the
receiving equipment to reduce the cylinder pressure. A
continuous gas flow can be automatically provided from
these cylinders Liquid can be withdrawn from these liquid
cylinders in the same manner that was described in the Dura-
Cyl LP liquid cylinder section
Filling Procedures
The Dura-Cyl MCR MP liquid cylinders are regulated by
the DOT/Transport Canada for transporting liquid oxygen,
nitrogen or argon. The filling of these liquid cylinders must
be done by product weight. This will allow enough gas space
above the liquid to keep the liquid cylinder from becoming
liquid full if its pressure rises to the relief valve setting. The
filling weight table indicates the correct product weight for
the various relief valve settings The standard relief valve
setting is 230 psig (15.9 barg). The filling procedure will
explain the proper way to use the filling weight table.