US1797244A - High-pressure piston or reciprocating compressor or the like - Google Patents

Description

C. SCHAER March 24, 1931.

HIGH PRESSURE PIsToN 0E REGIPROGATING coMPREssoRloRfTHE LIKE Z M vo .Huh .br 7 J .d 7u um F "rsy CHARLES semina, on Landman-rari, swrrznnrlnivn, ynssrcrnoaein yman'Frein orf l summa nannies socrnfrn nnorwrviabrWINTERTHUR, swrrzERLAND z HIGH-PRESSURE Prsroir or; nncrrno'onrrnecorrrassson on 'merma' Application filed January 26, 1928, Serial No. 249,627, and'zi'nwtzerland vAprilrlpf), ,.L27..Y

This invention relates to high pressure piston orreciproca-ting compressors or the like of the lrind in which the driving apparatus drives the compressor through the mediumyof an oscillating column of liquid.

4 According to the present invention the intermediate piston of the compressor is located above the working piston of the compressor. The liquid coiumn'directly actuated by the 1o piston of the driving apparatus can either act on that face'of each intermediate piston rwhich is nearer to or directed towards its rel spective working piston or alternatively, on

that face ofveach intermediate piston which is V remote from its respective-working piston.

The invention is diagrammatically illustrated by'wayof example in the accompanying drawing, in whicl Y Figure l is a section through the two upper stages of a compressor,

Figure 2 is a view partly in plan and partly "in gross-section onk the line I-I of Figure l,

an u v l, vFigure 3 shows fa modification according to the invention. l

In the construction shown in Figures 1 and 2 the cylinders 3 and 4" for the intermediate pistons 5 and 6 of thecompressor are mounted inthe casings-l and'2.

Y 3o The primary piston 8 actuated by a driving machine not shown, reciprocates in the cylinderI 7' containing a column of liquid. The compressor pistonslO and 11 draw the working ymedium intothe .cylinders .12 and 14 where it is compressed, the intermediate piston 5 of one stage being located above the compreseor piston 10 and the intermediate piston 6 of the other stage above thecompressor piston 1l. l The liquid column inthe cylinder 7 l, l

when'super-highpressure compressors 'are 40 actuated by the primary piston 8 of the driving machine is disposed between those sides of the intermediate pistons which face'towards the piston ofthe compressor and at a` n' point lower lthan lthe liquid column 13 between the two intermediate pistonsv and 6.

Figure 3 showsa modification in whic'hthe liquid column in the cylinderv 7 actuated by the piston- 8 of the 'driving machine, not shown in the drawing, is located on that side i .50 ofthe pistons 5, Gremote from the piston of thecompr'essor at ay point higher than the liqlivid column 13 betweenthe pistons 5 and 6; j hen the pistonS (Figure 2) movesin the direction of I.the arrow l5 liquid f passes throughthe passage 1 6 to the .underside'of the pieton which is thus forced upwardly anddraws themedium to be compressed, for examplev gas, into the-cylinder.. 14. At the Sametime, however, the liquidcolumn 13 forcesthe piston 5 downwardly whilst the liquid column between vthe underside of the pistonT 5 and the vpiston 8 is` forced through the passage` 17. The jcompressorpiston 1Q is thuscaused-toy compress the medium 'drawn into the cylinder 12.*,1vr f.' By means ofthe A'arrangement shown the pistons 10 and'll'vwhich effectthe compression may be arranged asdownwardly acting pistons, Awhen'the. following advantagesare obtained.

(-1) Thi-impuaies 'drawn in by the gas f6 be compressedvareheld backfrom the stuffing boX as theycannot pass betweenthe piston and thepacling, but fall from the endface ofthe ypiston tothe valve end ofthe cylinder. (2)` Any liquid drawn in falls to the"'valve end of'the cylinder, and,l ifmuch liquidis present, it is forced out throughthedelivery valves so that no waterv hammer can take place. :Liquid alwaysfclings-even ifV only in'4 small amou-nts%tothe valves,.`so,that the Y liquid remainingy between the valve and, its

Vseati'nfgfprote'cts the valveswhen they come down on,v to theirgseatings.

(3),The cylinders, instead Vof being ranged' vertically,"l may' be suspended downwards, 'which' 'is yparticularly of advantage'for thoseffstagesoperating at very high pressures,vr This arrangement very important since,I

arranged vertically,` 'safety vdevices must be provided, as conditionsdue to unforeseen faultsin the material, or to structural modi-l fic'ati'ons owing to vvarying strains, or due to chemical action by the medium to be compressorsworking at normal pressures. 1 The suspendedarran'gement ofthe cylinders also seV enables the safety devices to be arranged in the foundation 18, i, e., the foundations may be constructed so that the engine room space need not be used to house these safety devices.

:'Iclaim': Y Y Y 1. In a highV pressureV reclprocating compresser, the combination with a horizontally arranged primary piston effecting` a positive movement', of' a plurality oi' vertically ar'- ranged intermediate pistons, a plurality of compressor pistons arranged beneath said intermediate pistons, and adapted to be actuated thereby, an oscillating column of liquid between one side of said primary piston and l one-0f said intermediate pistons, anvoscillating liquid column between the other sideof said primary piston andV another of said intermediate pistons, and an oscillating c-olumn of liquid between said intermediate pistons;

2. In a highl pressure reciprocating compressor, the combination with a horizontally arranged primary piston effecting a positive movement, of a plurality of vertically arranged intermediate pistons, a plurality of compressorr kpistons arranged beneath said intermediatepistons and adapted to be actuated thereby, an oscillating column of liquid between one side of said primary piston and one of said intermediate pistons,.an oscillating 'liquid column between the other side of said Yprimary piston and another of said intermediate pistons, said columns acting on that fac-e of .each intermediate piston, which is'Y nearest its respective' compressor pist-on,

andan oscillating column of liquidrbetween said'intermediatefpistons Y 8i' In'aphigh pressure reciprocating compressor,the combination with aY horizontally arranged primary piston effecting a positive movement, ,of a plurality of vertically arranged intermediate pistons, a plurality of compressor pistons arranged. beneath said intermediate' pistons and adapted-to be actu-v ated thereby, an oscillating column of liquid between one side of said primary piston and oneof said intermediate pistons, anoscillating `liquid column between the other side. of 4saidY primary `piston and another o'sai-d intermediate pistons, said columns acting on that face of each intermediate piston` which is remcte from its respective compressor piston, andanoscillating column of liquid be-v tween'said intermediate pistons.

In testimony whereof I have aliiXed my signature.v v. g.

. Y VCHARLES SCHAER.

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