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MOBILE RECLAIMER FOR TRANSFORMER OILS

MOBILE RECLAIMER FOR TRANSFORMER OILS MOBILE RECLAIMER FOR TRANSFORMER OILS A new large oil reclaimer was recently completed by The Hilliard Corporation, 100 W.Fourth St., Elmira, New York, U.S.A. This was Model 500-X Duplex Hyflow reclaimer designed fo r the purification of transformer insulating oils and is mounted on a driven electric generating plant, hose reels and storage flat bed trailer, illustrated. The unit removes space for filter material. Unique features are central water, sludge, acids and other oil oxidation products, electric and valve control panels operating oil and dissolves paint, bushing compound, metallic soap vacuum pumps to provide easy reading of pressures, and other contaminants. The 500 gal/hour reclaimer temperatures, fluid levels and direction of flow. The incorporates a 375 gal. dirty oil storage tank, a 275 single cartridge fuller's-earth filters are handled by a gal. clean oil storage tank, a 50 kW petrol engine telescoping electric hoist. supplied where the bearing diameter exceeds 3 in. "POLYSLIP " Bearings Type 4 bearings are made from graded spherical bronze powder, sintered and impregnated with Details have been received of the new Polyslip P.T.F.E. They are available as straight cylinders bearings now being offered by Bound Brook Bearings or as thrust washers where dimensional accuracy is Ltd., Trent Valley Trading Estate, Lichfield, Staffs. not of the greatest importance. Certain complex These Polyslip bearings have a porous bronze matrix shapes can be produced from Polyslip 4 by special which is impregnated with P.T.F.E. (Polytetrafluoro- machining techniques. ethylene) and also have a superficial layer of P.T.F.E. PV factors for Polyslip bearings, estimated to give on the bearing surface. This layer is only 0.0005 in. a minimum life of 1,000 hours under completely dry thick and is provided for the initial period of running- conditions, are as follows :— in during which it is transferred to, and forms a thin film over, the bearing surface of shaft or journal. If Polyslip 1, Grade B, 1,200 PV. this solid lubricant should be removed momentarily, Polyslip 2, Grade A, 1,700 PV. the local rise in temperature causes expansion of the Polyslip 3 and P.T.F.E. in the porous lattice of the bronze and Grade B, 3,000 PV. extrudes to the surface. Grade A, 3,500 PV. There are three types of Polyslip and each is avail­ These values can be doubled in cases where hard­ able in two different grades designated A and B ; ened steel shafts are used. The presence of water or A is fully impregnated with P.T.F.E. whilst B is other liquid in which the bearing may be partly or only part-impregnated and is intended for less onerous wholly immersed also increases the allowable PV duties and is substantially cheaper. Polyslip types value. Certain substances used as additives to are numbered 1, 3 and 4. Type 1 bearings have P.T.F.E. have the ability to increase the permissible sintered porous bronze matrices impregnated with PV value for a given life to failure. P.T.F.E. and, with a few exceptions, are available Type 1 Polyslip bearings are supplied as plain in the same ranges of sizes and shapes as other oil- cylinders or with single flange, as thrust washers, retaining bronze bearings made by Bound Brook. and as spherical bearings. Type 1 are recommended Type 3 are composite bearings having either a solid where close tolerances are required. Type 3 are or a densed sintered bronze backing with a thin lining usually supplied where the bearing diameter exceeds of sintered bronze at the working surface impreg­ 3 in. Smaller sizes are used for conditions of severe nated with P.T.F.E. These bearings are usually shock or impact loading. Type 4 are available as 34 Scientific LUBRICATION November, 1958 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Industrial Lubrication and Tribology Emerald Publishing

MOBILE RECLAIMER FOR TRANSFORMER OILS

Industrial Lubrication and Tribology , Volume 10 (11): 1 – Nov 1, 1958
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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0036-8792
DOI
10.1108/eb052544
Publisher site
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Abstract

MOBILE RECLAIMER FOR TRANSFORMER OILS A new large oil reclaimer was recently completed by The Hilliard Corporation, 100 W.Fourth St., Elmira, New York, U.S.A. This was Model 500-X Duplex Hyflow reclaimer designed fo r the purification of transformer insulating oils and is mounted on a driven electric generating plant, hose reels and storage flat bed trailer, illustrated. The unit removes space for filter material. Unique features are central water, sludge, acids and other oil oxidation products, electric and valve control panels operating oil and dissolves paint, bushing compound, metallic soap vacuum pumps to provide easy reading of pressures, and other contaminants. The 500 gal/hour reclaimer temperatures, fluid levels and direction of flow. The incorporates a 375 gal. dirty oil storage tank, a 275 single cartridge fuller's-earth filters are handled by a gal. clean oil storage tank, a 50 kW petrol engine telescoping electric hoist. supplied where the bearing diameter exceeds 3 in. "POLYSLIP " Bearings Type 4 bearings are made from graded spherical bronze powder, sintered and impregnated with Details have been received of the new Polyslip P.T.F.E. They are available as straight cylinders bearings now being offered by Bound Brook Bearings or as thrust washers where dimensional accuracy is Ltd., Trent Valley Trading Estate, Lichfield, Staffs. not of the greatest importance. Certain complex These Polyslip bearings have a porous bronze matrix shapes can be produced from Polyslip 4 by special which is impregnated with P.T.F.E. (Polytetrafluoro- machining techniques. ethylene) and also have a superficial layer of P.T.F.E. PV factors for Polyslip bearings, estimated to give on the bearing surface. This layer is only 0.0005 in. a minimum life of 1,000 hours under completely dry thick and is provided for the initial period of running- conditions, are as follows :— in during which it is transferred to, and forms a thin film over, the bearing surface of shaft or journal. If Polyslip 1, Grade B, 1,200 PV. this solid lubricant should be removed momentarily, Polyslip 2, Grade A, 1,700 PV. the local rise in temperature causes expansion of the Polyslip 3 and P.T.F.E. in the porous lattice of the bronze and Grade B, 3,000 PV. extrudes to the surface. Grade A, 3,500 PV. There are three types of Polyslip and each is avail­ These values can be doubled in cases where hard­ able in two different grades designated A and B ; ened steel shafts are used. The presence of water or A is fully impregnated with P.T.F.E. whilst B is other liquid in which the bearing may be partly or only part-impregnated and is intended for less onerous wholly immersed also increases the allowable PV duties and is substantially cheaper. Polyslip types value. Certain substances used as additives to are numbered 1, 3 and 4. Type 1 bearings have P.T.F.E. have the ability to increase the permissible sintered porous bronze matrices impregnated with PV value for a given life to failure. P.T.F.E. and, with a few exceptions, are available Type 1 Polyslip bearings are supplied as plain in the same ranges of sizes and shapes as other oil- cylinders or with single flange, as thrust washers, retaining bronze bearings made by Bound Brook. and as spherical bearings. Type 1 are recommended Type 3 are composite bearings having either a solid where close tolerances are required. Type 3 are or a densed sintered bronze backing with a thin lining usually supplied where the bearing diameter exceeds of sintered bronze at the working surface impreg­ 3 in. Smaller sizes are used for conditions of severe nated with P.T.F.E. These bearings are usually shock or impact loading. Type 4 are available as 34 Scientific LUBRICATION November, 1958

Journal

Industrial Lubrication and Tribology – Emerald Publishing

Published: Nov 1, 1958

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