Found inside – Page 274... 148 – – with presses with crank gear intensifier, 108, 183 – – with steam ... 89 – of feed pumps, 11, 121, 122 – with direct drive, 76 Depth of press ... Found inside – Page 47Direct Pumping and Accumulator . ... 15.53 per operation hour . hour . and new Steam Hydraulic Intensifier System . ... Like the direct pump system , the system employing electrically driven pumps and an air - hydraulic accumulator , is ot without certain ... U - Pull - back Exhaust Connection . J - Intensifier Piston Rod . V - Prefiller . K - Intensifier Hydraulic Ram . W - Prefiller High - pressure Connection . Found inside – Page 138For forging press duty , however , where rapid pressing strokes are essential , the accumulator is at a ldisadvantage compared with an intensifier . Direct - Acting Pump . This is essentially a drive for the higher powered presses , but it has been ... Found inside – Page 194Such a device, a pressure intensifier, takes in low pressure oil (large ... The pump tries to maintain the rate of flow as it is driven at a constant speed: ... Found inside – Page 78The hydraulic fluid is pressurized by a hydraulic pump driven by an electric motor . Intensifier pumps are large and not well suited for mobile applications . High - pressure , direct - drive pumps became available in the early 1990s . Found inside – Page 1153pushes on a piston (or diaphragm) which pushes the pumping element through a rod (or directly on the pumpage) . Reciprocating pumps are classified by the following features: Drive end (power or direct-acting) Orientation of centerline of the pumping element (horizontal or ... Intensifier systems for water jetting are available from 30,000 to 60,000 lb/in2 (210 MPa to 410 MPa) up to 200 hp (150 kW) . Found inside – Page 125With direct drive pumps , this problem was exaggerated due to the relatively high stroke rates ( ~ 1800 rpm ) . The intensifier pump , stroking at a maximum of 60 cycles per minute was found to be more suitable for ammonia service and able to ... The approximate velocity of a fluid jet is given by Bernoulli's equation : V , = ( 2. Found inside – Page 77Direct drive pumps are mechanically driven crank pumps capable of operating at UHP conditions . Traditional UHP intensifier pumps use an area ratio and an intermediate hydraulic pump to create pressure . In general , direct drive pumps are ... Found inside – Page 672The high pressure pump is Flow System's direct drive " crankshaft " type cougar pump . This high pressure ... The cougar pump was chosen because the pump was less expensive than the cost of a 55,000 psi ( 380 MPA ) intensifier system . Found inside – Page 52This direct drive is offered after months of experimenting , followed by exacting tests for efficiency and endurance . ... It consists mainly of a low - pressure booster pump and an intensifier with the necessary valve arrangement to complete the ... Found insideFlow's new direct drive Revenues ... income growing industrial cleaning market , in addition to the quiet before extraordinary credit was $ 286,000 versus $ 185,000 20X intensifier pump which has gained momentum within a year ago . Found inside – Page 8718.6 kW ( 25 Hp ) direct drive pumps were first used up to 276 MPa ( 40 Ksi ) to prove out the cutting process and to identify areas needing improvements . The use of a 150 kW ( 200 HP ) intensifier - based pump was then identified for more ... Found inside – Page 154... pump and the intensifier pump. At pressures lower than 150 MPa, the direct drive plunger pump is the most commonly used type. In a typical triplex pump, ... Found inside – Page 51In 1980, Vincze applied for a patent for a constant pressure pump with axial ... Model UH-160 is a 40,000-psi (2750-bar) direct-drive pump for up to 6.1 gpm ... Found inside – Page 280... 190(F) direct drive (pump drive), 189–190 direct drives, 189–190(F) direct-drive presses versus accumulator-drive presses, 191(T) energy efficiencies, ... Found inside – Page 73Two types of pump technology exist: » Direct-drive pumps work much like an internal ... Intensifier pumps use hydraulics to oscillate a dual-acting plunger ... Found inside – Page 283Physical Experiment The main components of the machine include a direct drive ultrahigh-pressure HyPlex Prime pump and intensifier, a gantry robotic station ... Found inside – Page 67There are three types of drive in use The three - cylinder design has par today : ticular advantages for large press opera 1 The steam - hydraulic intensifier , tion . For economical working , it is necess 2 Direct pump drive ( pure hydraulic ) . ary ... Found inside – Page 81upon the pumps and can vary , depending upon the pressure in the accumulators and the resistance of the workpiece . ... for the 800 - ton steam press £9 , 640 , whereas for the 800 - ton directdrive press the corrected 1957 figure for electricity was £4 , 500 . ... The economics of press drives Four different presses are considered in this section : An 800 - ton steam intensifier driven press not now in use . Found inside – Page 65... extrusion:A pump is used, possibly with a pressure intensifier, ... Of the hydraulic presses there are two types: direct- drive oil presses and ... Found inside – Page 210A high-speed waterjet is formed by using a high-pressure pump, either a hydraulic intensifier or a direct-drive pump, as illustrated in Fig. 3. Found inside – Page 145Figure 5.4 Direct drive pump (one of three cylinders shown). variable output ... used to generate pressures of about 20 MPa over a piston of an intensifier. Found inside – Page 732.42 Alkire, T.D., “Advances in Direct-Drive Pump Technology Brings the ... 2.43 Singh, P.W., and Benson, D., “Development of Phased Intensifier for ... Found inside – Page 2265Previous Year A - Up V = Down -No Change Quantitative Evaluations Outlook : 1( 1 Lowest5 Highest ) Fair Value ... the high - pressure intensifier or direct drive pump , and one or company operated two main segments : Flow Waterjet Sys ... Found inside – Page 365For lowpressure applications up to 280 MPa, direct drive pumps are used. However, for very high pressures, these become unreliable, so intensifiers are used ... Found inside – Page 267The short connection between the driving and the the writer , and illustrated in Figs . ... If the position of the press cylinder must be such as to permit a driving piston is to be stopped at a definite point a mode- direct connection with the driving , piston and with the ... The pump of the intensifier , by a special steam piston , accompanied latter carries the hammer F , opposite to which is fixed the is engaged or ... Found inside – Page 169The Direct Drive Pump used in OMAX abrasive waterjets represents an evolutionary leap forward from intensifier pumps . In addition to lower operating costs , breakthroughs in pump design have resulted in longer seal life , less downtime and ... Found inside – Page 8... so it is impossible to fill the equipment with gas , an accident which can occur all too easily with direct gas pressure systems . ... Motor drive syringes ( Figure 2C ) deliver a constant flow smoothly irrespective of back pressure , but of course , any ... Since syringe pumps like pressure intensifiers , hold a large volume of solvent , any gradient system must operate on the high pressure side of the pump . Mechanically driven crank pumps capable of operating at UHP conditions pressure applications to. 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