Heavy Duty Balanced Opposed Compressors - Ariel Corporation
Heavy Duty Balanced Opposed Compressors - Ariel Corporation
Heavy Duty Balanced Opposed Compressors - Ariel Corporation
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FOR MODELS: JGZ AND JGU SECTION 4 LUBRICATION<br />
Contact <strong>Ariel</strong> Technical Services for assistance.<br />
3. Cooling water quality and treatment is to be maintained to prevent corrosion and mineral or<br />
other deposits. Cooling water must be treated with an appropriate anti-freeze, such as glycol,<br />
if subject to freezing.<br />
Coolant System Requirements<br />
The coolant flow is to be number<br />
of packing cases x 1 US gallon<br />
per minute, minimum for each<br />
inch of piston rod diameter (No.<br />
cases x 0.149 L/min for each mm<br />
of piston rod diameter). Based on<br />
using a treated 50/50% water/<br />
glycol solution.<br />
Example: JGJ/2 with 1.5 inches<br />
(38.1 mm) diameter piston rod. 2<br />
x 1 x 1.5 = 3 gallons per minute (2<br />
x 0.149 x 38.1 = 11.3 L per minute).<br />
Packing<br />
Case<br />
The cooler should be sized for number of cases x 70 BTU/minute/inch of rod diameter (No.<br />
cases x 0.05 kW/mm of rod diameter). The pressure drop across the system is to be greater<br />
than 30 psi (2.1 bar). The coolant into the packing is not to exceed 130°F maximum (54°C<br />
max.). A lower coolant temperature will increase the amount of heat that can be transferred to<br />
the coolant. A lower coolant temperature is better in high pressure applications.<br />
Force Feed Lubrication System - Description<br />
The force feed lubrication system provides oil to the compressor cylinders and the piston rod<br />
packings.<br />
Oil is supplied to the 150 micron sintered bronze filter on the suction side of the force feed lubricator<br />
pump directly from the pressure side of the frame lube oil system, or from an overhead<br />
tank. Oil from the filter is supplied to a header and to the lubricator pumps on the lubricator box.<br />
The lubricator box has its own oil reservoir to lubricate the worm gear and cam. The reservoir<br />
is self-contained and is not fed by the lube oil system. A sight glass on the lubricator box will<br />
show the oil level in the lubicator reservoir.<br />
There are 1/4 inch tube fitting connections in the discharge lines near the force feed lubricator<br />
pumps through which the force feed lubrication system may be primed.<br />
Next in the discharge lines are blow-out fittings with rupture disks. If there is a blockage in the<br />
system, the pressure build-up will rupture the disks. Venting the system through the rupture<br />
disk causes the no-flow shutdown switch to close.<br />
The oil then travels to the distribution blocks. It is here that the lubricating oil is apportioned to<br />
provide the exact amounts to the cylinders and packings. The pistons in the intermediate sec-<br />
7/09 PAGE 4 - 29<br />
P1<br />
F1<br />
P1<br />
Throttling/<br />
Isolation<br />
Valves<br />
Cooler<br />
T1<br />
P1<br />
F1<br />
P1<br />
Coolant<br />
Circulating<br />
Pump<br />
FIGURE 4-10 PACKING COOLING SYSTEM - TYPICAL<br />
Packing<br />
Case<br />
P1 = Pressure Indicator<br />
T1 = Temperature Indicator<br />
F1 = Flow Indicator
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