US1816403A - High pressure reciprocating piston compressor - Google Patents

Description

July 28, 1931. c. sczmluzn 1,816,403

ama rassua n ncrrnoonmq PIsToN couPnEsson l original Filed' Feb. 5,y 192e INV-ENTDR NTDRNM I Patented yJuly 28, y1931 UNITED sTAJEsl PATENT OFFICE CHARLES SCHAER, oF ,LANGENTHAL SWITZERLAND, nsSrGNoR To THE EIR-M oF sULzER FRERES SOCIETE ANONYME, E WINTERTHUR, SWITZERLAND Y, y

' HIGH PRESSURE RECI'PRocATING PIsToN COMPRESSOR original lapenas@ mea. February. 3, 192s, serial No; 251,714, and in switzerland June s., 1927. Divided and this application led J'a'nuary 30, 1930. vSerial No. 424,555..

This yinvention Arelates to high pressure piston or'reciprocating compressors or the like'of the kind in which the vworking pistonsof the compressor or their intermediate pistons are actuatedby primary 'or'driv- Y ing pistons which arepreferably exposed on both faces to the action ofa column of'liquid. vThe output of such compressors has hithertobeen limited by the dimensions ofthe L3-110 last stage and not by the power of the-'driving apparatus, the dimensionsv of the last stage beng themselves limited by the lquestion of packing theworkingpiston and stuiiing boxes. vIn fact,fas regards the latter there 15.15 is a definite" diameter, which if exceeded, cannot be eicientlypacked with the means at present available. Y n

The invention has `for its object to provide an improved construction of such compressors yinwhich these vdisadvantages are obviated and the output increased while simplifying the 'driving mechansm. Y

According to the present invention at least 'two intermediate pistonsrespectively actufate the individual working pistons of two or more compressor cylinders arrangedin parallel for the purpose of increasing the output of the compressor ywhile"simplifying lthe driving mechanism. `Bythe term arranged in parallel, as used abovejand throughout 'the remainder of' the' description, is intended to be meant the arrangement of the cylinders whereby they operate in the same stage.VA

lThe liquid columns which' act onV the'intermediate'pistons of these cylinders are preferably all actuated by one and the same primary piston. The cylinders may be arranged inpairs and the intermediate pistons of each pair may be connected by a column of liquid disposed in the sameplane as that in which j is disposed the column ofliquid connecting V one of the pairs of intermediate pistons and the correspondingI primary piston. Alternatively, the liquid column between the intermediate `pistons of each pair may be disposed in a plane transverse to the plane in which is vdisposed the liquid column between one of the pairs of intermediate pistons and the corresponding primary piston.

'59 A few eonstructional examples ofthe invention are illustrated diagrammatically by way of example in the accompanying drawinfrs, in which E' Y A y -igure'l is a sectionalview of two stages for example the twowuppermost stages, 01:"5 one form of piston compressor according to the (invention, Y Y y Figure 2 is a plan view of a modification of Vthe arrangement of `Figure 1, `Figure 3 is a sectional view on the line' 60 III-III of Figure 2. v

In `the Yconstruction illustrated in Figure 1 the movement of the liquid columns within the cylinders 8, 9 and V10 is effected byM double-acting primary pistons 5, 6 and 7 mounted on a piston rod 4 which is connected to the crank 1 ofthe driving machine (not l32 of the'compressor'cylinders 33 Vand 34.'

Between the primary pistons 5,6and7 and one face of eachof the intermediate pistons 17, 18 19, 20, 21 and 22 are provided liquid columns 35, 36, 37, 38, 39 and 40 respectively, andbeo tween the adjacent intermediate pistons 17 and 18, 19 and 20, and 21 and 22 are re- 85 spectively provided liquid columns 41, 42 and 43. f To the suctionv pipe 44 for the cylinders 27, 28, 29 and30- of Vtheseeond last stage are connected the suction valves 45 46, 47 and 48, the delivery valves 49 and 50 for the cylinders 30 and 29of this stage being connected to the suction pipe 51 and th( suction valve 52 forthe cylinder 34 of the last stage of the compressor, while the delivery valves 53 and 54- for thecylinders 28` and 27 are connected to the suction pipe55 and the suction valve 56 for the cylinder'33 of the last stage. The delivery pipe 59 for the last stage leads" from the delivery valves 57 and 58 for the cylinders 34 and 33 'to thcf W* point of consumption of the compressed gas. The liquid columns between the adjacent intermediate pistons are arranged in the same plane as the liquid columns between one intermediate piston and the corresponding primary piston.

The intermediate pistons 19, 20, 21 and 22, actuated by the primary pistons 6 and 7,

c cause the compressor pistons 23, 24, 25 and 26 to act on the medium within the cylinders 27 28, 29 and 30 respectively, wliicliare arranged in parallel, while 'the intermediate pistons 17 and 18 actuated by the primary piston 5 cause the compressor pistons 31 `and to act on the medium within the cylinders S8 and 34 respectively, which are alsoarranged in parallel.

The construction shown in Figures 2 `and 3 4differs Yfrom that shown in Figure 1 in that the liquid columns between adjacent intermediate pistons are disposed in a plane transverse to the plane of the liquid Vcolumn between-one rot' the pairs of intermediate pistons and the corresponding primary piston. In this arrangement the axes of the liquid columns 78 and 79 between the intermediate pistons '62 and 63 and between the intermediate pistons `66 and 67 are disposed perpendiculaily tothe axes of the primary pistons and 61. The cylinders 7.0 and 71 accordingly are arranged in parallel, as are also the cylinders 72 and 73.

With this construction, the primary pistons'GO and 61 act on the pairs of vintermediate pistons 62-63 and ,6G-.67 of the cylinders 64-65 and (58-69 rl`he intermediate pistons (i2-63, actuated through the liquid columns 7 4 and 7 5 by the primary piston y60 and connected by the liquid column 78, actuate the compressor pistons 82 and 83 of the cylinders and 71, which are arranged in parallel.- Similarly, the intermediate pistons 66-G7, actuated through the liquid columns 7 G and 77 by the primary piston (il and connected by the liquid column 79, act iii :a similar manner von the compressor `pistonsof the cylinders 68 and .69, which also are arranged in pai'- allel. The supply to the suction valves is e'ected by the pipe 80 while the discharge vtakes place from the delivery valves through the pipe 81.

The invention enables the output of the known type of compressor to be doubled, in spite of the tact that the driving mechanism is considerably siinpli-lied and the plunger .diameter remains the saine. The diameter oil the st-uiiing boxes, shown only diagrammati- .cally, does not become-excessive and the reduction inthe dimensions reduces the extent to which the packing heats up, .so that frictional heat can be more readily dissipated.

, In addition, expansion due to heat is reduced Y and the play between the piston and the packin elements `is therefore less.

hisapplication iis division ot U. S. ap-

plication, Serial No. 251,714 filed February 8, 1928 and issued as Patent No. 1,7 67 ,404, J une 24, 1930.

I claim 1. In a high pressure reciprocating compressor, `the combination Witha positively actuated primary piston, of a plurality of intermediate pistons, a plurality of compressor pistons arranged in parallel and each actuated by one oi' said intermediate pistons, an oscillating .coliunn oi liquid between one side of said vprimary piston and one of said intermediate pistons, an `oscillating column of liquid `between the other side of said primary piston and another of said intermediate pistons, and an oscillating `column of liquid between said intermediate pistons, said last named `column being disposed in a plane transverse to that in which are disposed said i'rst named columns.

pressor, the combination with a plurality et positively actuated primary pistons, of a plurality of intermediate pistons, a plurality vof compressorV pistons arranged in parallel and each actuated by one lof said intermediate pistons, an oscillating column of liquid between one side of each oi said primary pistons and one of said intermediate pistons, an

oscillating column of liquid between the other side ot each of said primary pistons andanother of said intermediate pistons, and an oscillating column yoit liquid between the irst and lastnamed oi" said intermediate pistons, said last named column being disposed in a plane transverseto that in which are Ydisposed said irst named columns.

3. In a high pressure reciprocating compressonthe combination with a horizontally disposed positively actuated primary piston,

of a plurality of vertically disposed vintermediate pistons, a plurality of compressor pistons arrangedV inparallel f pairs and each actuated by one of said intermediate pistons,

an oscilla-ting column of liquid between one. side ot said primary piston and one of said intermediate pistons, an oscillating column of liquid between the other side of said primary pistoii and anotherlof said intermediate pistons, `and an oscillating column of Aand each actuated by one of said intermediate pistons, an oscillating column otli'quid between one side of each'of said lprimary pistons and one of saidfintermediate pistons, an

4 .oscillating column of liquid between the other 2. In a high pressure reciprocating com-A side of each of said primary pistons and another of said intermediate pistons, and an oscillating .column of liquid between the first and last named of said intermediate pistons, said last named column being disposed in a plane transverse to that in which are disposed said first named columns. Y v

In testimony whereof I aiix my signature.

CHARLES SCHAER.

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