US1759301A - Apparatus for cooling compressor valves and compressed fluids - Google Patents

Description

` May 20, 1930. l. L.. DUNN ET AL '1,759,301

APPARATUS FOR COOLING COMPRESSOR VALVES AND COMPRESSED FLUIDS Filed Feb. 23, 1928 2 sheets-sheet 1 ///////ll/l/l/// da f5. Lew/2s,

TTORNEY May 20, 1930. l, L DUNN ET AL 1,759,301

APPARATUS FOR COOLING COMPRESSOR VALVES AND COMPRESSED FLUIDS Filed F65l 25, 1928 z sheets-shea; 2

ATToRNYr A Y Patented May 20, 1930 UNITED STATES IRWIN I.. DUNN ANDVJAMES o. `LEWIS, or' TULSaoKLAHOMA APPARATUS FOR COOLING COMPRESSOR` VALVES AND COMPRESSED FLUIDS vApplication led February 23, 1928. Serial No. 256,304.

Our invention relates to valves of that char-l acter adaptable for use in connection with compresso-rs employed for compressing air or gases or in the manufacture of casing head 5 gasoline; the principal objects of the invention being-to prevent distortion of the discharge valve and adjacent parts of the co-mpressor mechanism by heat transferred from the compressed fluid, to, eliminate explosions,

10 and to facilitate condensation of liquid components of the fluid.v v

In accomplishing-such objects of our inven-y Fig. 3 is a detail perspective sectional viewy of a discharge valve constructed in accordance with our invention. Y Fig. 4 is a detail perspective View of the several elements of the discharge valve, shown in spaced but relative relation.

Referring more in detailto the drawings: 1 designates a compressor, including t e 35 cylinder 2 which may be supplied through an intakel line 3 in accordance with common practice, and 4 a piston operable in the compressor chamber 5 and having a rod 6 operably connected with an engine 7 in accordance with 'common practice. y

As the fluid delivered 4to the compressor is comparatively cool but is heated to'high teinperat-ure as an incident of compression, our invention has no relation to the intake of such fiuid to the compressor' but is concerned only with the discharge of the fluid. Consequently, no referencewill be made tothe intake end of the compressor, but it is to be understood that in multiple stage compressors each stage is vsimilarly supplied with cooling apparatus as shown for the single stage compressor herein.

As the compressor is double-acting and the cooling mechanism duplicated at opposite endsy of the piston chamber, but one mechanism will be described, with the understandlionghthat such description relates equally to Each of the heads 8 of the compressor is provided with a discharge port 9 opening to a valve chamber 10 preferably circular in cross section and communicating with a channel 11 constituting a manifold having outletV through a port 12 to a line 13l whereby fluid compressed by the piston and delivered to the valve is conducted to a suitable condenser presently described. The line 13 is preferably attached to the compressor housing by attachment of a plate 14, into which the line is threaded, to the housing by bolts 15.

Located within the valve chamber 10v is al discharge valve 16 of ordinary construction except or the improvements hereinafter specifically mentioned and comprising a housing 17 having open ports 18-in a restricted neck 19 terminating in a tubular throat 20, the body of thehousing snugly fitting within the inner portion of the annular chamber 10.

Covering the housing 17 is a valve seat plate 22 provided witha plurality of segmental slots 23 through which the comi pressed fluid may be delivered from thecompression chamber,the platev being shouldered to seat on the valve housing and center the plateA in the housing. f

24 designates a pin having a head 25 seated in a countersunk recess 26 in the top of the seating plate 22, a collar 27 extended through an annular aperture 28 inthe plate 22, and a shank v29 extended below the plate 22 comprising a smooth portion 31 adjacent the collar 27 and a threaded portion 32 extending to the end ofthe pin. Located on the smooth portion 31 of the pin 25 is a valve stop plate 34 having segmental slots 35 corresponding to and adaptedfor registration with slots 23 in the valve seating plate 22, the plate 34 being shouldered on its under surface to reduce its mass and resultant heat retention.

The valve stop plate 34 is held against the 1 Y shoulder formed at the lower end of the collar 27 on pin 24, by a nut36 and a bushing 37,

both threaded onto the Vshank 29 of the pin; vthe bushingextending through the throat 20 of the valve housing and carrying a nut 38 which engages the end of the housing throat to bind the,l valve seating plate' 22 to the hous- Yl D ing through'connection of the bushing with the pin 24. Y y Y Y The bushing37isabutted at its outerend Vby a bushing'40'threaded into a bottom plate 41 screwed tothe compressor housing by bolts 42 to enclose the valve chamber, the discharge valveV being therefore supportedon the bushing 40 and removable as a bodyfromthe valve chamber 'when .the bottom'plate 41 is Y removed from the compressor housing.v

` lInterposed Vbetween the valve seating plate 22 and the valve stop plate 34 isa valve disk 44 having a smooth central aperture 45 inwhich the smoothr portion 27 vof the 'shank' f 29 of the pin 24 is located, the ,-valvedisk 44 being of considerable less thickness than the lengthfofthe portion oit' the sleeve 27 of pin 24 remaining below the valve seating plate 22, so that the valve disk may move vertically von thepin between". the :seating and stop Y plates. rWe provide the Vdisk with apertures 46-.and arrange the apertures to avoid registration with the slots 23' of the valve seating l'plate but to register with the apertures 35 of the .valve stop plate, so that `V.when the valve disk is lifted during intake stroke of the compressor-piston, it will be pulled against the valve seating plate and seal the slots 23 to prevent back flow to the vcompressor through the discharge valve, and When the valve disk is at the other Ylimit of its movement, theopenings 46 will register with the slots 35 in the valve 'stop plate and discharge the compressed fluid. In order tol maintain such relation ofthe valve disk to the plates 22 and 34` and of 'the plates rela-V tive to 'each other, we provide the seating plate 22 with a downwardly projecting pin 47 f which extends through anaperture 48 in -the valve disk into a socket'49 in the valve stop plate, thereby permitting vertical fluctuations of the valve disks without permitting rotary movement of the valve disk rela-A tive to either of the plat-es or of the plates ,the sockets 51.

to Veach other.V The valve disk 44 seats on a plurality of springs 50 retained in sockets 51 opening upwardly from the topfface of the valve stop plate 34, so that the valve disk 44 is always held up against the valve plates 22 during the intake stroke. Reduced ports 51 extend downwardly through the stop plate 34 from the sockets 51 so that a -cooling liquid `may flow through said ports into the valve chamber when'the valve disk is closed upon Up to this point wehave,lexcept orthe ports 51', described only what is common in the construction of this type of discharge supplied under pressure.

valves, but will now proceed with a descripn tion of the adaptation of our improvement to Y 37 and connecting with the central channel 57 extending through the pin 24 to nearthe head of the pin.V The channel V57 in the pin 24 has outlet `through ports 58 that extend radially to the sleeve p'ortion 27 of said pin into cornmunication with radial channels 59 Vin the valve seating plate 22 the channels 59 havingV f f outlet through downwardly openingV ports 60 onto the topfofthe valve disk 44.

`By this means Vwater is admitted Vinto the line of flow when the discharge valve is opened but is prevented from entering the compressor cylinder whenV the discharge valve is closed. We may also have Vthe ports Y open through the apertures 46 of the valve` disk'44. n y f The channel 57 in the Ypin 24 also has lateral outlet through radial ports 61 in the smooth portion 31 of the shank 29 of pin i 24 into radial channels 62 inthe valve? stop plate 34, the channels 62 in turn having outlet to the vertically opening spring sockets 51 into the Vspace'below the `valve disk 44. Consequently, when water or other cooling liquid is delivered under pressure from the pipe 54 through the bushings 40k and 37 into y the interior of the pin 24, it is forced radially through the channels in the valve'seating and stop plates into the valve chamber and onto opposite sides of the valve disk, thereby Y cooling the valve body, the seating andstopV plates, as well as the valve disk itself, to prevent distortion of the valve parts underexf treme heat generated by compression or' the fluid in the cylinder, the cooling fluid further co-mingling with the compressed fluid to reduce its temperature and -to preventl eXplosions and stimulate condensation of the fluid in the flow line, the'condenser'coil and the separating receptacle, and to eliminate eX- plosionfhazards caused by ignition of comb ustible mixtures of air with gases or lubri* eating oil` from the hot discharges, from the compressor cylinder.

It is desirable' to supplyiwaterrin excess, v

that is, in quantity sufficient thatitwill cool the gases belowthe boilingpoint of the water and will wash the water, and other condens-v able vapors from the air or gas.

The water or cooling fluid may be sup-V plied to the compressor in the following manner and by the following instrumentalities:

' receptacle 68. Y

. Opening froma relatively low level of the receptacle 64 is apipey 69 for conductingY fwater which, being immiscible and of lower gravity than the gasoline, has settled to the bottom vof the receptacle, to a high pressure pump connected bya line 71 with the supply pipe 54 leading to the discharge valve mechanism as presently described.

It will thus be seen .that the water is recycled; the water vapor, almost always present in air or gas, being condensed to make up any losses and always providing a pure water that will not deposit mineral matter in the valve or in the pipe. f

`The line 71 is preferably connected with the supply pipe 54 through a four-way union 72, whereby the supply line is also connected with the discharge valve at the opposite end of the compressor by a branch 73, so that the other discharge valve may be cooled as described in connection with the valve heretofore mentioned. The fitting is also provided with a branch 74 opening into the discharge line 13 so that the cooling water may be coiningled with the compressed fluid leaving the compressor manifold to cool the fluid as it leaves the compressor and thereby facilitate condensation and prevent overheating of the outlet line.

The high pressure pump may be operated through a transmission indicated by the gear wheels 75 and pulley 76 and belt 77 from the drive shaft 78 of the gas engine operating the compressor, thereby forming the entire apparatus into a compact unit entirely operable from a single source of power.

Assuming the parts to be constructed and assembled as described and the compressor, for illustration, connected with the gas relief line from a well being pumped by the airv liftmethod, the operation is as follows:

The air, saturated with gasoline vapors, is admitted to the compressor and compressed in accordance with common practice. The compressed fluid heated to a high temperature by compression, is deliveredthrough the discharge valve to the manifold chamber and out through the discharge line to the condenser. During passage of the fluid through the valve, water under high pressure is delivered through the valve bushings and center pin into the valve seating plate and the valve stop plate and jetted into contact with the valve disk, being distributed over the sur- 5 face of the disk and forced out over the edge o'f the disk into the valve chamber to cool the mechanical parts and being Clo-mingled with the compressed fluid to reduce temperature of the fluid. The compressed fluid passes onthrough the condenser into the separating receptacle where the gas land liquid separate, the gas being carried olf for recirculation or other disposition, the gasoline or other high gravity liquid drained off from the upper outlet line, and the water pumped yolf from a lower outlet line for re-us'e in cooling the compressor and fluid discharged thereffrom. Y

Itis apparent that in accordance with our invention the cooling fluid is recirculated i.

through the compressor and condenser in a closed circuit, thereby avoiding the scaling of pipes or conduits which would occurif fresh flow `of mineral-containing Water were employed.

While we have referred to compression of a specific kind of fluid, have illustrated a spe cific form of compressor and condenser, and have mentioned water as the cooling fluid employed, this has been merely to aid in eX- planation and without intent to limit scope of the invention.

y What we yclaim and desire to secure byLetters Patent is:

l. In a discharge valve of the character described, a member having a channel opening through its exterior surface, and means .for delivering a cooling fluid lto said channel 2. In a discharge valve of the character described, a valve seating plate having radial channels opening through one of its faces to the exterior of the plate, and means for delivering cooling fluid to said channels to be discharged over the valve seating plate.

3. In a valve of the character described, the combination of a center pin having a longitudinal channel and lateral ports leading from the channel, a valve seating plate having radial channels communicating with the ports in said pin and opening through a face'of the plate, and means for delivering a cooling fluid under pressure to the pin channel.

4. In a valve of the character described, the combination of a center pin having a longitudinal channel and lateral ports leading able between the seating and stop plates, and i' means" for delivering a'co'oling luid'to said channels under pressure for discharging into the valve cut-olf plate. Y

6. In a valveof the character described, the combination of a center post having a lon- -gitudinalfchannel and tWo Vsets. of lateral ports opening from said channel, Vspaced valve seating and stop plates fixed on said Ypost having radial'channels communicating with respective sets of ports in the post and `'opening through facing sides of the plates, a p 'valve'cuteoff disk movable between Vthe plates,Y

and means for delivering cooling Huid under pressure to the channel in said postfor delivering Ythrough' the plates into contact with Aopposite faces of thevalve cut-off disk.

7. In a Vvalve of the character described, v

g the combination of a center post having a longitudinal channel and tWo sets of lateral ports opening from said channel, spaced valve seating and stop plates'ixed on said post havy ing radial channels communicating With respectlve sets of ports 1n the post and opening through facing sides of the plates, the side Y openings in the stop plate constituting spring sockets, springs seated in said sockets, a valve cut-0H disk seated on said springs andr Inovable between the plates, and means for delivery cooling luid under pressure to the l the valve cutoil' disk.

channel insaid post for delivering through the plates into contact with opposite faces of In testimony whereof We affix our signatures. y i

`IRWIN L. DUNN. JAMES o. LEWIS.

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