DE1929630A1 - Dry running piston machine, for example dry running piston compressor, the pistons of which are equipped with so-called captured piston rings - Google Patents

Description

LINDE AKTIENGESELLSCHAFT

a 69/12 (S 315) Jfe ^

! frookenlauf-pistonBaaonln ·> belapialewel · · Trookenlauf-Kolbenrerdiehterp their pistons ■ with so-called trapped piston rings «u * ~ «« Equips flad

The invention relates to "In" froaksnlattf-KolbenBasehinet bei "*

(j epieleweiee Trookenlattf-KolbenTerdieater * whose pistons aa ; outer boundaries with single-sided and / or double-sided double-sided bindings Forged ring grooves and in the ring grooves «itsende» ait one-sided and / or double-sided Bingeehultezm Ttreebenet • Elbitep »nnende and / or under Brück a« Spennalttela eteoende Open the piston rings, almost completely reaching a · door • door TereehleiAutees with their ring shoulders en the ring buttden of the biagnut iur plant

The well-known Irooken barrel piston aaeobinüi of the type be opposed to dry-running-lolbenrnmiehinen, with whom

009882/1779 sad original

LINDE AKTIENGESELLSCHAFT Sheet 2

norsalt ringsehulttrloet piston rings Ytrwtndung findn, durob Much longer maintenance periods in Daduroh, that your prisoners named with Rlngaohulttrn Ttrtthtntn Piston rings according to BsTtlohtn «inte rorbttt inrfc tn Versohl *! Ss * a £ tβ with their ring »6 hui tern on the ring collars dtr ring grooves sur

Attaches kosotn and tor dlttts point in time to another Movement in the direction of the cylinder running surfaces prevented Bind, nMalloh becomes an iu far-giving baw. complete rejection dtr Xolbtnrlngt »dat daraut Tttultierendt Vaohlatttn dtr sealing effect as well as the risk of damage dtr Zy « lindtrlauffläohtn duroh the on dtn dtn cylinder treads On the turned sides of the piston ring, springs are arranged, dit In case of excessive piston rings with ring grooves can step out, tiehtr Ttmitdtn.

The cake is old and old that the piston from "entagetfohnieohen grtoies through" r "f laaatrringtn, where Jewellβ * w «i in Blthtua * dtr Kolbtnläagtathtt successive * Ettaatrringt tint aenkreoht iur tolbenlängeathee Ttrlauftndt Stiluagtlin tinen dtr Ringtohulter dtt Kelfetnrlngtt tnteprttht »dtii btind aufweieende Hingnut form. Bad the Btrsttlluagtkosttn for a booty flask vtftntlioh higher and old for «iata one-piece, lies clearly on the tape “Hlnau koaat dar Is Ytrgleith "It tints one-piece" piston same öröit wttentIioh

• 3 - 6A0 ORIGINAL 009882/1779

1929630 LINDE AKTIENGESELLSCHAFT

. Sheet 3

it

higher liaterlalaufwand "which eioh under another on the Gewioht the piston built &'g tive effect" Since the Kolbengewioht nialioh consideration with you in the movement of the piston Massenkraft® occurring ^ "grenst iet _f can in the known dry-running piston # nverdlchtexn the Initially mentioned type only pistons are equipped with so-called trapped piston rings up to a certain size

The invention is based on the task of _{developing a Crockenlauf piston unit with 9, for} example, Sroökeslauf piston compressors, whose pistons have an outer circumference and are one-sided and double-sided with annular grooves and can be produced in the Hingnuten sit send "unilateral unASLEEP / or double-sided fiiageehiiltern provided ·" selbstepennend · Usil / or under pressure ·! »©« Spannaittels standing · piston ring · besiteen "with a weeentlieh less time m & material costs than those with HagbuaA · »▼ seen ring grooves for the topping of the so-called gofang« n «n Kolaenringsn actuating pistons of the well-known freekeniauf-Kolb« nmasohia «B.

This task is solved * rii »du ££ sgeiEäß dadurah, 009882/1779

SAD ORtGlNAL

1929630 LlKDE AKTIENGESELLSCHAFT

Sheet 4

4 * 3 dlt piston designed in one piece elad uad dl «for the Admission of the piston rings with the round shoulders 1 »· etiaaten ring grooves through ate * $ anende shaping la ale a · partially formed pistons incorporated,

Bti the erflndungegeftllfen Troekenäauf ^ KolbenBa- "eohine are," since the pistons auegebildet one piece and the Biagn "th in the one-piece auagebildeten piston incorporated miserable, the Heretellungekoeten ₉ i% r material costs and it abhttngigen Oeviohte the piston veeentlieh low ale in the known froekenl & uf ~ Kolbenaaeealnan der Oattung »whose pistons for the installation of the trapped piston rings called with Blngaohttltern Tereehenen ia the for this ▼ orgaeehenen Bingnuten la Bereloh dieeer Rineavten transverse« ur piston lM & geaohee Tvrlaufenden divisions «Me lmeaBrabriend the piston course gate «it Elngeehul-

captured
tera rereehenen aogenanntaiiflolbearingen auoü bei Kelbe »· great for the biaher because of the crossing of the ·« it Süokeiaht on the during the Hi & »« ad 'movement of the pistons occurs »tendon Maeeenkrllfte txlaal iollaaigen Oewiebte caught · Kelbenriage not got into

At frookettUttf-Kolbiaaaaeniaoa, at which the the Biagnuten felle ifcrer Kilben etad and those in the

BATH ORIGINAL

009882/1779

1929630 UHDB AKTIENGESELLSCHAFT

Sheet5

Ring grooves end piston rings «depending on whether one-sided or Double-sided bundles are provided * Ir-btw · T-fö «* ige Across the board, wide areas of an advantageous education According to the invention, the ring grooves each have one Abeohnltt without a collar, which is so loaded in the circumferential apiahtung is that the piston rings go into the without difficulty relevant ring grooves can be threaded. The missing Ringbundüoke and hereby throug houting elements ereet «t, welohe in the area of the annular collar-free sections of the annular grooves Detachable piston bars located on the similar dleeen attached and *

All anchor ducks can serve as circlips, too Vertical axes converge over the piston length axis arranged circular ring-shaped receptacles of the Piston webs are arranged in such a way that they partially protrude into the flange-free recess of the annular grooves eioh also hoods, which are in aneenkungen of the piston rods This is how screwed in »dad their heads · partly la ale The collar-free abutment of the lingnutsn protrude as Λη-eeblageleaente proven.

However, old age can also benefit from being a hang-on Formed in the shape of a circular arc, in their thickness aen ring rounds Flattea? erv # ndung fia4e ». Dieee

009802/1779

1929630 LINDE AKTIENGESELLSCHAFT

Sheet 6

Plates are in the Diok · der Singbunde corresponding wells the piston webs are inserted and by means of sinker plugs aa piston attached. They are so obsessed with their breadth In the built-in state, the ring collar is partially free from * cuts of the ring grooves protrude "

According to another advantageous embodiment of the According to the idea of the invention, the aa have the outer circumference of the piston • Ring grooves located in tan »in which those with bingo shoulders The following piston ring · are arranged »rectangular cross-sections- · Let here, depending on whether the piston rings with one-sided or Double-sided Blngsohultem Ysrsehen are »·. in one or in two radial edge surfaces of the annular grooves in the outer Outer surface of the piston adjacent area each one aur Piston-long taohe · coasentric groove engraved »in which a one-piece or multi-part ring serving as a ring is inserted · So that the binge serving as a ring collar is without Difficulties in the grooves designed to accommodate them * can be placed, the ring grooves have a «solohe radial Expansion s, on »that the piston ring« pushed in so far during installation can be a »until the grooves are free on one side ·

The in the radial StgTaiingsflaohfn the Hingnuten pierced lill kornaen a hipsreiefuraigea and the Ix die üllen pickled ümge a circle-shaped * Cross section besltsem · Imp reduction of the illohenpreseuisg

mfm

009882/1779

1929630 LiNDE AKTIENGESELLSCHAFT

BUtt 7

41t piston rings could old in the radial Äigreniunettllae of the ring groove · η eiagestoeheaexi grooves ua & in dl «lilltn tin · gtlegertn Hangs also a roo teal Qttereetmlttbesltsen «

Alt iWeokaMSig has ei oh «ine aaeh at» linhau in dl · Ring grooves pre-machined securing dtr piston rings against a Twisted η proved in the ring grooves * For this Zveek let la Area of the butt joints of the piston rings «from the affected · Know about ethylene or another suitable material » Ib orund of the ring grooves jeveile an aneohlac attached.

. Further details of the invention can be associated with the implementation shown in the drawings.
Seigenι

Figure 1 a longitudinal section through a piston of a Execution! Fora of an invention ceaäeen Dry-running Ttrdlohter ·,

figure 2 a cream cut along the Iiinle XX-IZ ia figure I ₉

Fig. 5a and 3 · an outward «hat the piston» geeafi

the ftfuren 1 and S ia 8 «ltanan * ieht and la Lengthwise,

Figure 4 iron serration through a piston of an anier Ausftthnmgsfora an inventions made froakeniauf-KölbenTerdlehters _f

009882/1779

0AD OfHGlNM.

1929630 LINDE AKTIENGESELLSCHAFT

Sheet β

Figure 5 is a section along the line T-V in Figure 6,

FIG. 6 shows a section of the piston according to the figures 4 and 5 in side view »

FIG. 7 shows a longitudinal section through a piston of another Embodiment of an inventive Dry run pistonYerdiohter · »

FIG. 8 shows a section along the line TIII-YZIi in FIG. 9,

FIG. 9 shows a section of the piston according to FIGS. 7 and 8 in the Seitenanaioht _f

FIG. 10 shows a length through a piston of a modified one Implementation form of an inventive Trooken running piston sealer and

Figure 11 shows a section along the line XI - XI in Figure 10

In Figures 1 to 3b, a one-piece piston 1 of a dry run piston compressor is shown » the piston rod 2 of which is guided in a guide bearing 4 housed in the cylinder cover 3 with very little play will. In this way, the piston 1 is prevented from during the to-and-fro movement in the cylinder 5 starts up on the cylinder running surface 6. For axial guidance of the piston 1 can instead of the piston rod guide bearing 4 also on the outside The guide rings attached to the circumference of the piston 1 are used »Ba the guide of the piston 1 but not counter

- 9 - ^8AD ORIGINAL

8 7/1779

1929630 LINDE AKTIENGESELLSCHAFT

Sheet 9

prior to the present invention is, in this and the following exemplary embodiments, is an illustration of such Guide rings have been disregarded.

On the outer circumference of the axially guided piston 1 are four evenly spaced over the length of the piston, * Annular grooves 7 open towards the cylinder running surface 6 are arranged,

ι which each consist of iwei ring groove parts Θ, 9 lower different

Exist height and daduroh that the annular groove parts 9 with the smaller Height of the cylinder running surface 6 are adjacent, respectively have a double-sided collar 10.

In the annular grooves 7, piston rings 11, whose double-sided ring shoulders are denoted by 12, are fitted in the annular grooves 7, which are matched to their cross-sections, that is, a T-shaped cross-section side-by-side and made of a Trooken running material, for example tetrafluoroethylene. The piston rings 11 are guided in the annular grooves 7 and are pressed against the cylinder running surface 6 by the backed springs 13 during the run-in.The springs can - as indicated for the two outer annular grooves 7 - duroh the pressure of the cylinder space 16 via fluid channels 14 and 15 in the ring notifications θ $ rü »9T9V height, iu conveying medium · still be subverted. In this way, the ring shoulders 12 of the piston rings 11 run into contact with the ring collars 10, eo therefor ^{1, in the transition areas of the ring groove parts β, 9}

• 10-

009882/1779 ■■ »« *** ^

1929630 LINDE AKTIENGESELLSCHAFT

Sheet 10

Movement of the same in the direction of the cylinder running surface 6 auBgeeohloasen is

The bit the Ringsehultsrn 12 provided so-called captured piston rings 11 guarantee in connection with the Piston rod guide bearing 4 after entry has taken place a minimal β game «know them and the cylinder surface 6 and thus ensure an effective labyrinthapalt detachment ». As can be seen from FIG. 2, they are introduced into the annular grooves 7 of the pistons 1 intended for them via sections 17 free of annular collars of the ring grooves 7 in the circumferential direction eo dimensioned "that" I the Let the upturned piston rings 11 be introduced tangentially into the annular grooves 7 without difficulty Sections 17 of the annular grooves 7 adjoining areas of the piston webs 1Θ are in this embodiment by sur KoI * longitudinal axis vertical axes concentrically arranged, Annularly designed recesses 19 incorporated, the bottom surfaces 20 of which on the collar-free Abaohnitte 17 of the circular cylinders intersecting the annular grooves 7 are located Recesses 19 are embedded in the ring grooves 7 clamping ring 21 after the piston rings 11 have been inserted. As a result of the

When the recesses 19 are arranged, the clamping rings 21 partially protrude into the sections y of the free ring collar Annular grooves 7 in and serve «omit those located therein

009882/1779

192963P LINDE AKTIENGESELLSCHAFT

Sheet 11

Segments of the piston rings 11 as stops.

In the figures 4 to 9 flind with the figures 1 to 3b agree parts with the same reference numbers been. Ba prepare these parts in the manner shown in FIGS. 1 to 3b corresponding part of the description has been dealt with in detail, it is unnecessary to go into this in more detail below.

Bie in Figures 4 to 6 and 7 to 9 shown Pistons 1 differ τοη that in Figures 1 and 3b shown only duroh the different training of the missing collars of the collar-free Absohnitte 17 of the Ring grooves 7 replacing stop elements. While with the the latter piston clamping rings 21 serve as anchorage elements, can be found in the piston shown in FIGS. 4 to 6 Head screws 26 as anchoring elements Use piping head * screws 26 and screwed into radially directed tapped holes, which are in the centers of the areas of the piston webs adjoining the sections 17 of the annular grooves 7 that are free of the annular collar 18 incorporated and intended for receiving the Sohraubenküpfe 28 at their ends facing the cylinder running surface 6 Cylindrical shaped countersinks 29 bit one the annular collars 10 of the annular grooves 7 corresponding 'depth extends bind. The heads 28 of the screws 26 here have one so dimensioned diameter that they are in the installed state partially in the adjacent collar-free sections 17 of the

- 12 -

009882/1779

1929630 LINDE AKTIENGESELLSCHAFT

Sheet 12

Ring grooves 7 protrude and are missing at this point Ring collars 10 of the ring grooves 7 are replaced.

In the piston 1 according to Figures 7 to 9, instead of the clamping rings and head screws, the same dioke is used like the ring collars 10 of the ring grooves 7 having »krelsbogenfönaig trained Flatten 30 ale Ansohlageleaente, their Lengths to the extent of the collar-free Absohnitte 17 of the Ring grooves 7 are adapted in the circumferential direction. The plates 30 are in each case a means of countersunk countersunk screws 32 in the. Thickness of the annular collars 10 corresponding depressions 33 attached, which in the sections 17 of the annular grooves which are free of the annular collars 7 adjacent areas of the piston webs 16 incorporated are and so beaeasen in width that eie in the installed state partially in the collar-free Abeohnitte 17 of the annular grooves 7 protrude. This into the collar-free sections 17 Parts of the plate 30 protruding into it serve the parts located therein Segaenten of the piston rings 11 as stops and ereetsen thus those for aontagete without the same reasons in Sections 17 missing coils 10.

The piston 40 shown in FIGS. 10 and 11 differs from those shown in Figures 1 to 9 duroh the formation of its annular grooves 41. While with the piston according to Figures 1 to 9, the annular collars 10 for the reception of the piston rings provided with ring shoulders 12

- 13 -

00988 2/1779

1929630 LINDE AKTIENGESELLSCHAFT

Sheet 13.

certain ring grooves? Divides the «internally formed piston 1 are, i.e. the ring grooves 7 T-shaped transverse center * The ring grooves 41 of the piston 40 shown here have seats a rectangular cross-sectional shape «in each of the three shown Ring grooves 41 »those for receiving with double-sided Ringsoh shoulders 42 rereehenen piston rings 43 determined are, is in both radial boundary surfaces 44 »45 in the area of the end of the annular groove that is inverted from the cylinder surface a longitudinal piston shaft consentrisohe groove 46 »47 with a semicircular Pierced cross recess · On the third ring groove 41 "which is intended to receive a piston ring 49 provided with a hanging shoulder 46 on one side" merely shows a radial delimitation area 50 in the area of the ring » grooving a but piston lengthwise groove 51 on » which has a rectangular cross-section

All ring collars for the piston rings with 42 »48 ring oars 43 »49 serve in the present pail in the Lillen 46 »47» 51 of the radial boundary surfaces44 »45» 50 of the Ring grooves 41 inserted one-part or multi-part rings 52 »53, In adaptation to the Rlllenquereohnltt round or rtohteoklg are »where the rings 53 with a Reohteokiger cross-sonic shape the gate part have »dad the flttohenpressungen iwisohen den Rings 53 and the piston lenght shoulders 46 and the piston lenghts 54 are smaller than with round rings 52.

- 14 -

0098B2 / 177S

LINDE AKTIENGESELLSCHAFT

Sheet 14

So that the hinge 52, 53 oh »difficulties can be inserted into the grooves 46, 47» 51 designed for it » Auseen the annular grooves 41 have a unique radial dimension, that the piston rings 43 »49 introduced into the annular grooves 41 are pushed so far in alignment onto the piston / maga axis can be eugänglioh until the grooves 46 «47» 51 on one side are free and

10 patent applications
5 sheets of drawings

00988 2/1779

Claims (8)

1929630 LINDE AKTIENGESELLSCHAFT (S 315) sheet 15 5 6Q / 32 k / M lit Claims Dry run »piston machine * especially dry run piston compressor, whose pistons are provided on the outer circumference with one-sided and / or double-sided annular collars Ring grooves and seated in the ring grooves, provided with one-sided and / or double-sided ring shoulders, self-tightening β and / or have piston rings under pressure from a clamping device *, which after reaching one «predetermined VersohleifiaaSes Bit her ring neck to the Coils come to the plant, characterized in that defl the pistons (1, 40) are formed in one piece and those for receiving the piston shoulders (12, 42, 48) Piston rings (11, 43, 49) determine ring grooves (7, 41) by machining into the one-piece piston (l, 40) are incorporated 2. Trookenlauf piston machine according to claim 1, wherein the The ring collars of the ring grooves are parts of their pistons and the piston rings sitting in the ring grooves, depending on whether one egg ' term or double-sided coils are provided, 1-bev. Have T-shaped cross-sections, characterized in that - 16 - 0988.9 / 1779 _ÖADO RIG «** L 1929630 LINDE AKTIENGESELLSCHAFT Sheet 16 daO the annular grooves (7) each have a collar-free section (17), which is measured in Ufcfangeriohtung eo is »that the piston rings (11) without difficulty can be introduced into the relevant ring grooves (7) .and the missing Ringbundβtüoke duroh i * area of the annular collar-free sections (17) of the annular grooves (7) on the Bwieehen them located, piston rods (16) releasably attached Aneohlagelemente (21, 26, 50) ereetet Bind. 3. Trookenlauf-Kolbenaaeehine naoh claim 2, characterized thereby · "Siohnet that clamping rings (21) serve as anechoic rod" which in inter alia door piston length ahee eenkreohte loheen con- • entrieoh arranged »circular shaped floodplain * grooves (19) of the piston rods (16) arranged in this way are because they are partly in the collar-free Abeohnitte (17) of the line grooves (7) protrude. 4 · Trooken run-piston aeohine naoh Anepruoh 2 »daduroh kenneeiohnet, that all Aneohlageleaente lopfeohrauben (26) serve »welohe in Aneenkuagen (29) of the lolbsnstege (18) are screwed in such that their lugs (26) are partially in the ring-free abeohnitte (17) of the rings (?) ■ register. 5 «Trookenlauf-Iolbeneaechine aeeh Anepruoh 2, thereby kennaeiohnet, dal ale Aneohlageleeente in their thickness dea -17- 8AD ORIGINAL 009882/1779 1929630 LINDE AKTIENGESELLSCHAFT Sheet 17 Ringbund ·)! (10) of the annular grooves (7) accordingly «, In the ι Dioke of the annular collars (10) corresponding depressions (33) of the piston webs (16) inserted and by means of countersunk screws (32) attached to pistons in the shape of an arc of a circle Plates (30) are used, which are so possessed in width that they are partially installed in the la protrude from the annular groove (7), which is free of the collar (17). 6. Trooken running piston machine naoh claim 1, characterized in that the ring grooves (41) located on the outer circumference of the piston (40) »in which the piston rings (43» 49) are arranged , have rectangular cross-sections and, depending on whether the piston rings are provided with one-sided (49) or double-sided (43) circular shoulders, in one (50) or in both (44, 45) radial flanges of the ring grooves (41) in the tufted lateral surface of the The area adjacent to the piston (40) has a groove (46, 47 »51) concentric along the length of the piston. have solohe radial expansion dad introduced into the annular grooves (41) Kolbenrimge (43, 49) in the radial direction wrt toveit Yereeboben ** can, until the grooves (44,47,51) of a string tone frtft lUfJlnfUoh are. - 18 - 00988? / 1779 BATH ORIGINAL 1929630 LINDE AKTIENGESELLSCHAFT Sheet 18 7. Troekenlauf piston machine according to claim 6, characterized in that that in the radial boundary surfaces (44, 45) of the ring grooves (41) grooves (46, 47) a semicircular cross-section and the one in the RiI * len (46,47) inlaid rings (52) a circular Have a cross-section. 8. Trookenlauf-Kolbenmasohine naoh claim 6, characterized gekennseiohnetf that the grooves (51) and the rings (53) inserted in the grooves (51) have a rectangular cross-section 9 * Trooken running piston machine according to one or more of claims 1 to β, characterized in that the piston rings (11, 41) after installation in the annular grooves (7 # 41) each by a stop attached in the area of their imperfections in the groove base against a Turning in the ring grooves (7t 41) are secured.
10 · Dry running pistons according to one or more of Claims 1 to 9, characterized in that the piston rings (11 »41) are made of dry running material such as tetrafluoroethylene with suitable fillers or the like. BATH ORIGINAL 009882/1779