DD144586A5 - PRESET MEMORY OR SIMILAR DEVICE - Google Patents

Description

Berlin, the 11 · 1.0.1 979 55 644/17

.Druckspeicher-, or similar gate direction

Application of the invention. ,

The present invention relates to pressure vessels, and more particularly to pressure vessels having a rigid housing, each having a port at the ends and a deformable separator in the interior separating the vessel into two variable volume fluid chambers communicating with the respective ports. The separator is in the form of a membrane or bladder with a closed lower end and an opening with a peripheral bead. The membrane is, with its beaded edge attached to an inside of the housing ring-ringing stop esegment

Characteristic of the known technical solutions

Known age segments are thick or thin-walled in their exposition. In the former, deep in the thick-walled retaining segment, a groove is cut, which receives the bead of the membrane. In the second embodiment, the bead is vulcanized at the end of the thin-walled retaining ring segment. Examples of the first type of embodiment are US Pat. Nos. 2,394,401 (Overbeke) and 3,168,907 (Mercier et al.) And for; the second embodiment, U.S. Patents 3,946,759 and 3,830,259. - :: . · / ;; , '- ^: '. ^ C-- ':' ^: \ '\ ' ό ': "^' ^; '··''

In addition, it is proposed that the membrane be between 'a ^: holding segment of the thin-walled design and the Ge. clamp the housing, and zv / ar immediately below the beading

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the membrane, which is then taken up by a circumferential rounding in a hook-shaped sector of the holding segment ·; This technical solution is disclosed in U.S. Patent 3,948,287 (Sugimura et al.). Such pinching of the bead edge would be exactly where the strongest tensile and bending forces occur at the membrane, and would thus be a cause of considerable fatigue shortening the durability of the membrane. .

Object of the invention : '. V \ - .. '·,. : V. V; ^:

The aim of the invention is to provide a pressure vessel which can be mass-produced at a low cost. , ^: · Ν. ^; - ..; '; , '..''.' . ";" -.: '''-' V. .-.. ^

Explanation of the invention of the invention ; _::: '/ ..: .-' ^y:

Object of the present invention is to provide a pressure vessel with a ring-shaped retaining segment in thin-walled design, which has a specially shaped hook-shaped sector, which cooperates with the complementary bead of the deformable separator, thereby ensuring a non-susceptible mounting of the separator and consequently its long life.

This object is achieved by a rigid housing having two closed ends with axial flush right at s closing tut s; and a deformable separator located in the housing between the connecting stubs, thereby forming variable volume pluid chambers. The diaphragm opening -'wird by a ^ringsum-: limited current meniscus. On the inner wall of the housing a Ilalteringsegmeiit is provided in thin-walled design, which with a substantially cylindrical sector on the

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Inner wall of the housing rests. A hook-shaped sector with a radially open lobe for receiving the separator bead defines the transition zone between the substantially cylindrical and hook-shaped sectors of the retaining segment. This zone forms a wedge-shaped space to the inner wall which receives excess deformed bead material so that therebetween An impermeable seal is formed around the surrounding retaining segment and the housing. The end of the hook-shaped sector remote from this transition zone points from. the inner wall of the housing radially a distance corresponding to substantially undeförmierten Sepäratdrwanddicke so that the Separätorabschnitt between the hook end and the housing inner wall is not substantially, durch'-., The hook end. Compressed /. In the undeformed state, the bead edge is of greater radial dimension than the radial depth of the recess, which is at least two and a half times the distance between the hook end of the retaining segment and the inner wall of the housing.

As a result of this construction, the deformable separator undergoes substantial coextrusion between the round end of the retaining segment and the housing, d, h, in the zone in which tensile and bending forces are applied in operation. The deformable separator thus protected against fatigue, the. otherwise, its fastened and its durability. would be detrimental. The round, preferably. 'Rolled end of the retaining segment, protects: in addition, the deformable separator before tearing under deformation and bending load ·

The hook-shaped sector absorbs the ridge. A thickened / V bead can be used at the depth of this sector. When assembling, the bead

213936

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edge, pressed together, bead material after, squeezed into the top of the wedge-shaped space between the transition zone and the housing. As a result, the beaded edge enclosed in the hook-shaped sector is compressed and optimum loading is achieved. consolidation achieved '';;. ..- _; . .:.

The wedge-shaped space is sufficiently dimensioned so that bulge material finds ample space and there is no danger of shearing the deformable separator during assembly.

Another feature of this embodiment is the formation of an impermeable seal between the ring encircling bracket and the housing, which are hermetically insulated from each other by the "Pluidkammem · The ring surrounding the retaining segment on the housing attaching means need not ensure the Eluiddichtheit.

The attachment of the retaining segment is preferably done by joints, Z ₀ B, point welding parts, a continuous weld or an adhesive · The cohesion of the welding or splices need not be controlled systematically v / earth, since the sealing function by the compression of Wülstrandes in the wedge-shaped space is perceived while the fastenings only prevent axial displacement of the retaining segment ·

The end sector of the annular retaining segment is round or rolled, it may also be a separate toric ring segment provided on the radially outer end of the hook-shaped sector.

The toric ring segment may be formed of compliant material that is harder than the material of the separator,

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and ejgzentrisch to the free end "of the hook-shaped sector arranged ..sein ·.":. '.::. ·':;

According to the invention, the hook-shaped sector has slightly inclined planks of opposite slope, namely a first sloping flank adjacent to the round end, which runs substantially perpendicular to the center line of the separator wall in its middle position between the brewing and stretching position to the housing wall. The second sloping flank of the hook-shaped sector following the cylindrical section of the retaining segment which is in the axial direction forms an angle, which is greater than the angle of the first inclined flank to its plane, relative to the plane of the vessel. The first inclined flank of the hook-shaped sector is therefore of flattened frustoconical shape ·

Preferably, the distance d 1 between the sealing sector and the inner wall of the housing is less than the length d 1 of the first plank, which describes the shoulder for the ulterior side, smaller than the length d of the hook-shaped sector on the inside of the first plank or equal to this length and greater than that. Length Q _{2 of} the sector between its radially outer side and its transition to the first plank. , , '. , ; .... : ''

, It is also useful that a second plank: the fillet adjoin the substantially cylindrical sector of the rounding air segment and form an angle with a vertical plane -a the axis of the housing: greater than the angle the first plank forms the rounding with its corresponding vertical plane ·

213936

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The second plank may have a flattened frustoconical shape

In a further embodiment of the invention, a second flank with a vertical plane to the axis of the housing can form an angle which is at least twice as great as the angle which the first plank forms with its plane perpendicular to the axis.

The total ^ in alignment with the final sector of the retaining segment-measured height of the fillet is advantageously equal to the difference between the radial depth of the fillet and the distance between the final sector, and the inner wall of the casing · ^ · ''^'·';... ^ . '.'v;: .. ':.''··^;',:;'::i:'''"V^; - .. ··. V, '^:. '; -.

The encircling retaining segment is secured to the housing by connecting means at the end of the cylindrical sector remote from the transition zone.

In this case, the end of the cylindrical sector may have an angled edge for receiving the Verbinduigsmittels,

.-. The.: - Housing is advantageously composed of a first and a second shell segment, each of which forms one of the end faces of the housing and an end in a ring end end oblique edge cylindrical portion has »in which edge the .ringsumlauf retaining segment axially The transition zone is then expediently designed as a fillet. However, it can also be essentially frustoconical.

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In this embodiment, an excellent securing of the separator is achieved. The first inclined flank represents a clamping shoulder that runs essentially "perpendicular" to the line on which tensile forces are exerted on the "separator." Also supports During assembly, the squish flow of excess bead material into the wedge-shaped space is increased, since the rise of the second sloping flank of the hook-shaped sector is substantially greater, that is to say, the first sloping flank forms a bead, while the second sloping flank,. a slideway for: steering the movement of excess bead material into the wedge-shaped space,

Exercise 1. , ',.-.-. ,

In the following the invention will be described in more detail by means of embodiments with reference to the accompanying drawings.

Fig. 1: a longitudinal section through inventive. Pressure vessel;

FIG. 2: an enlarged detail which shows the: holder of the separator bead edge in FIG

Holding segment in mounted position shows;

3 to 6: a plurality of successive assembly stages of the separator in the housing;

Fig. 7 to 8: erfinduigsgemäße variants

, with '. spot welding' or splices as: fastening means; , _v

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Pig. 9: a section of another Aus. ; '· ·'> '; , variant ", in which the rolled end ^: ^ of the hook - shaped sector is replaced by one of the

other restraining segment is replaced by a separate gate sector Λ of toric shape;

The description will be made with reference to FIGS. 6 through 6 which illustrate an oil-gas pressure vessel according to the present invention. The pressure vessel consists of a housing 10 of rigid material, for example of steel, which can withstand the pressures exerted on the pressure vessel during operation.

The housing 10 consists of a generally cylindrical body 11 with closed end faces 12 and 13 · The end face 12 has a fluid connection piece 14, for example, a Ölanschluß stutz s, which can be connected to a corresponding (not shown) connector · The other end face 13th has a Pluidanschlußstutzen 15, for example, a gas connection pipe, in which a gas supply valve 16 is located · The Ans.chlußstutzen 14 and 15 are axially aligned right ·

In detail, the housing 10 consists of two opposing dumbbell segments 10A and 10B. The first shell segment 10A comprises the end face 12 and a longitudinal segment 11A of the cylindrical body 11. The longitudinal segment 11A has a sharply tapered circumferential rim 27 1OB includes the termination face 13 and a short segment 11B of the cylindrical body 11. · The segment 11B has a sharply tapered circumferential groove at a small distance from the tapered edge 27 of the first segment 11A.

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end "margin 28". , ''..'-

The two jacket segments 10A and 10B are interconnected by a circumferential weld 29 extending in the annular V-shaped groove defined by the bevelled edges 27 and 28 of the segments 11A and 11B.

In the housing 10, a deformable separator 17 is positioned. "This separator 17 is an expandable membrane" made of similar material with rubber-like properties. "Separator 17 is located between ports 14 and 15 and defines two variable volume pluid chambers , and zv / ar a liquid chamber 19 and a gas chamber 20 «

The deformable separator 17 has on the lower side 21 a valve segment 22 which rests on a valve seat 23 which is provided around the liquid inlet opening 14. The valve segment 22 preferably consists of a cast steel or aluminum disk on the lower side 21 of the separator 17 ·

The separator or membrane 17 has a bulbous from the bottom 21 to the mouth with its surrounding Ymlstrand

The outer diameter of the diaphragm orifice is equal to or equal to the diameter of the housing. The housing 10 is provided on a retaining segment in a thin-walled or sheet-metal design, for example made of steel or plastic. The encircling retaining segment 20 is fixed to the cylindrical body 11. In the embodiment shown in Pigur f-6, the thickness of the support is itment

26 smaller than half the thickness of the housing 11. It can with- /

213936

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"Λ ^{^;} ^ Vr ^'::' ^ '-" - "; \: V :;." / ^{"Risk:;;." Γ--;.} - ""-;''^{'Ν; ^'}'/L':^'''^"55" 64-4 / it; -..' , 'for example, one-quarter or one-fifth of its thickness'bear' / - ';' ^: .- \ - · 'WY "wy-Y' Y , - '.." Y-- .- ..'

Such a pressure vessel works' in, and per se known manner as follows: '' _: Y

The Anschlusstutzen 14 is connected to a hydraulic 'and under pressure gas, z »B, nitrogen, filled through the valve 16 into the chamber 20 until the deformable separator 17 is expanded and presses against the inner wall of the housing» Between the connecting piece 14 and the hydraulic unit is a stopcock (not shown) · Is this open, the pressure fluid entering through the connecting piece in chamber 19, for example oil or water, against the separator 1? and compresses the gas into chamber 20, which reduces the volume in chamber 20 and allows liquid to enter chamber 19. Thus, the pressure vessel is ready for operation. Oil in chamber 19 is pressurized in gas chamber 20, if required. When this happens, the chamber 19 deflates. When completely emptied, the valve segment 22 'presses' sealingly against the valve seat 23 and closes the opening 14 * W'y · ^:. \ Υ Wy "- ^; - Y- ^v .: V,. ^

The attachment of the ring-surrounding stop it egment 26 takes place, for example, by a weld 30 on the inner wall of the shell, in a small distance and axially to the sloping edge 27 ', -:: - ..' ... 'V.'"'.".' Wy '·'':.''''.:.'·; -:: '-: ..-.'. ^

The encircling retaining segment 26 of thin material Y has a substantially cylindrical sector on 31 j whose free end is welded at 30 »This is followed by a rounded or curved transition zone 32,

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Then, a hook-shaped sector 33 and finally a bent or preferably rolled end sector 34 'V \ followed by the circulating wedge-shaped gap C to the inner wall of the housing.

As already. ment, it is made of a relatively rigid material such as steel or plastic, and because of its stiffened thin-walled construction in the cylindrical sector 31 is easily bendable while its rolled zones 33 and 34 are practically rigid due to their profiling. The cylindrical sector 31 may optionally be slightly tapered in shape before insertion of the retaining segment 26 into the housing 10, so that it exerts a slight preload during installation. ;

The hook-shaped sector 33 comprises two slightly inclined flanks of opposite slope and is of flattened frusto-conical shapes. A first inclined flank 35 connects to the rolled end 34 and a second flank 36 to the transition zone 32. The inclined flank 35 forms a. Angle A to a vertical plane to the axis of the housing, while the second inclined edge 36 forms an angle B to such a plane, which is greater than the angle A · angle B is preferably twice as large as angle A *. .. _':':; ....: ^/: ...... "\ ', ...; ·' ·...

Aißei-runs the Sahrägflanke 35 perpendicular to the average Hittellinienposition D of the side wall of the separator between the rest position (shown in Figure 2 in phantom) and a strain position in which the separator against the Innenv / and. of the housing 10 presses. ,

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Accordingly, the inclined flank 35 extends perpendicularly on average 3U of the line along which the separator is stretched during operation, and acts as a clamping shoulder for the beading edge 25. The other inclined flank 36 allows the deformed bulk material to slide into the wedge-shaped space which is intended to receive surplus, compressed bead material »,; V ^. _ 'Ν -. "V' _^': y · :.'] '..] .:." ;; , .. · '; .. '. " ^: - Λ- ';. ^

The distance Ξ between the rolled end sector 34 of the holding segment 26 and the inner wall of the cylindrical body 11 is made clear in FIG. This distance E is substantially equal to the thickness of the separator 17 in its rest position, so that any significant pinching or squeezing of the separator 17 is avoided at this point. The 'depth 3? of the hook-shaped sector 33 of the holding segment 2G _f measured from the inner wall of the cylindrical liörpers 11, is chosen so that it is the Zweia inhalbf ache or more of the st est and it E · Vorzügsweise the depth P is two and a half to three times the distance E #: ·:

The axial height G of the hook-shaped sector 33 * measured: the radially outer boundary of the rolled sector 34 parallel to the inner wall 11, the difference distance .'zwischen ¥ and E is equal to or greater than ν · V -

~ With further reference to Figure 2 correspond to Porm and dimensioning of the ring-holding segment it 26 certain relations that ensure maximum retention of the bead edge 25 and thus the entire separator 17 »

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In order to measure the various dimensions of the array, a series of lines were drawn parallel to the center position D of the center line of the side wall. These lines L, Lg, L, L, and L ₁ were drawn as follows. Line 'L is simply the outside of the separator 17 in its central position, the der.Mittelposition D of. Center line corresponds to: Lp is the tangent to the radially outside of the rolled end sector 34 * L_ is the parallel to the center line D at the collision of the starting rolled sector 34 and the lower sloping side 35 of the hook-shaped sector 33 "L ^ is the parallel to the center line D Finally, at the collapse '' of the beginning lower trailing edge 35 and the curved hooked sector 33 # L-, the parallel to the centerline D is from the radial inside of the hooked sector 33 'The distance:' between the lines L., and Lp is d., The distance between Lp and .'Iu is dp »the distance between L and L is do, and the distance between L and Lr- is d.

4 0 4

.. According to the preferred embodiment of the invention, the distances d are ν, d _o, ~ d and -d>'"so selected that they satisfy the following relations:

2): ä, ₃ y .d _r .; = ' ^: '"---. · ': - :; v. ^: _; •; -, \ V- ..." · ^: ''·

The further description will be made with reference to Figure 3, in which the bead 25 is shown in solid lines in its undeflected state,

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cylindrical body of the pressure vessel and the Wulstrandhaltesegment 26 are shown with broken lines. It will be noted that the outline of the bead 25 is substantially conformed to the sloping flanks 35 and 36 of the hooked sector 26, and so on. an extra thick zone S on the inner wall 11 of the pressure vessel and a deep-shaped region R on the rolled sector 34 of the retaining segment abuts * The additional depth of the deep-shaped region R is substantially equal to the extra thickness of the zone SV,. '' ''. ' ., ... '; ..

When assembling the pressure vessel, the beaded edge 25 is first inserted into the correspondingly shaped hook-shaped sector. Then the segment consisting of the holding segment 26 and the. Wulstrand 25 existing Ünteraufbau in the first shell segment 1OA used (in Pig · 4-6 of the oblique '' edge 27 can be seen). The engagement of the substructure behind the rolled sector 34 causes the extra thick zone S to compensate for the deeply formed zone R, and deformed bead material 25Λ into the wedge-shaped space G between the passage s ζ one 32 and the inside wall of the housing 11 is squeezed (see Pig, 2 and 6). It should be noted that the rounded zone 32 facilitates insertion of the cylindrical sector 31 into the shell segment 10A.

The deformation of the extra thick zone S of the V / ulstrandes 25 causes an excellent support of the bead 25 in the hook-shaped vector of: holding segment, wherein the separator or the membrane 17 is still not squeezed thanks to the applied to the rolled sector deep-shaped zone R. The impermeability between the chambers '19 and 20' is ensured by sticking the deformed bead material 25A in the wedge-shaped space C.

213f3I

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How to recognize is; the flow of "bead material" into the free wedge-shaped space due to friction of the housing 11 on the extra thick zone S after assembly "favors"

The wedge-shaped space C is dimensioned sufficiently large so that the hineiiifließende bead material has a comfortable place / without Risk of shearing the separator by the sharp edge of the bevelled edge 27 when the cylindrical sector 31 reaches it ». '..:'./" -.:

To insert the substructure consisting of the retaining segment 26 and the beaded edge 25 into the frame segment 10A, it is advantageous to use a mandrel (not shown). The mandrel presses against the upper end 31 'of the cylindrical sector 31 and abuts against the sloped edge 27 of the segment 10A when the correct predetermined position is reached, the upper end 31' being longitudinally spaced from the sloping edge 27 When the subassembly 25-26 has reached this position in the shell segment 10A, the upper end 31 * of the cylindrical sector 31 is welded to the inner wall of the housing at 30, with a continuous weld, as in FIG. 1 and 2, or with a dotted weld (as shown in FIG. 7). Thereafter, the basting segment 10B is positioned and hooked to the shell segment 10A at 29 "". _; - ^:;:::

It can be agreed that the pressure vessel according to the invention allows mass production at a lower cost. When a considerable choice is made for the housing and retaining segment material, a non-susceptible mounting and a long shelf life of the separator are simultaneously ensured. One notes, that in the housing no grooves or slots

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. must be incorporated, 'which ·' specially -; in plastics "is expensive and / or sciiwierig Since such grooves or slots weaken the housing, over-dimensioning would be required, which 'would -Increases its price.' their weight _and;:. . _: ; ^: . \:; '' ^: ';;'^'-':'-': - \ - ' ^"'... '' .Y '. ^ I' v, '·' .- '/'".

The slightly inclined first plank 35 of the flattened frusto-conical sector, which is perpendicular to the center position of the separator 17 during operation, forms an extremely stable support for the membrane, while the impermeability between the chambers 19 and 20 is enhanced by the engagement of the deformed bead. tmaterials 25A, which is wedged between the 'transition zone 32 and the inner wall of the housing 1 T, properly guaranteed vrlra. The tightness does not need to be ensured by the connection through which the holding segment 26 is attached to the housing. The device according to the invention thus makes it possible to connect the shell segments by spot welding at intervals, which would otherwise not be permitted.

In another embodiment of the invention shown in FIG. 8, which is generally similar to the previous one, the cylindrical sector 31 of the retaining segment comprises an angled edge 37 which forms a circumferential groove 38 for receiving a weld or adhesive bead 30. In the latter case, the holding segment made of plastic, which allows the use of reinforced plastic for the housing 11. Such an embodiment is particularly interesting when the fluid used is highly aggressive to metals, when coating the metal is not desirable, or when extremely high pressures do not occur.

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When using an adhesive, the channel 38 allows it to be applied under excellent drying and curing conditions. Such a depression or channel 38 helps to prevent the dropping of not yet dried adhesive into the membrane or separator.

The transition zone 32 · 8 in Pigur is frustoconical and not as in the previous training of the _invention: guide options curved or rounded,:

In Pigur 9, the rolled end of the encircling retaining segment 40 is not integrally formed with the retaining segment but separate therefrom. The rolled lower end of the retaining segment consists of a toric ring segment of preferably round cross-section of resilient material that is harder than the bead material. During assembly, the bead material deforms about the surface of the toroidal ring segment 41 as shown. Unlike the previous remarks, where the rolled end of the; adjacent lower or first flank attaches, runs; The toric ring segment in relation to the surface of the long plank 42 upward · Thus, the toric ring segment reinforced by its convex surface holding the Wulstrandes, In comparison · this is in the known technical solutions, the surface of the oblique. Sector generally concave, which weakened the holder made by the holding segment As shown, the toric ring segment 41 is slightly offset. the free one. Outer edge of the first plank 42 is provided to prevent excessive: deformation of the bead at a given radius of the rolled sector, ''; : '

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Of course, according to the teaching of the invention, those skilled in the art can imagine further embodiments of the pressure accumulator according to the invention. The invention is therefore to be interpreted in a broad context within the scope of the attached claims.

Claims (1)

21393 -19- 11.10.1979 55 644 / Π Invention; s ans pruch . «Druckspeichervorrichtung, consisting of a rigid Ge. home with two end faces with axially aligned connecting piece and a separator located in the housing between the connecting piece, which on both sides of the separator Fluidkamniern be formed of variable volume »The separator has a mouth opening with a circumferential bead and a ring attached to the · inner wall of the housing surrounding Separatorhaltesegment in thin-walled, substantially thinner design than the housing _β pressure vessel, characterized in that A) the holding segment comprises: I - a esentliehen in v / cylindrical sector "· abuts against the inner wall of the housing;. II - a smooth curved hook-shaped sector which 'defines a radially outwardly open fillet for receiving the Separatorwulstrandes; III - a transition zone between the substantially: cylindrical sector and the hook-shaped sector, .. which delimits a wedge-shaped space zur.Innenwand in which the rim pressed into zusaiiunenge em state is clamped und.eine impermeable seal between ^the: holding;. segment and the housing forms; , , IV - an end sector at the end of the hook-shaped sector, away from the transition zone and at a radial distance from the inner wall of the housing, which is essentially equal to the undeformed separator thickness, such that the zv / ischen the end sector and the inner wall ! of 213936 -20- 11.10.1979 55 644/17 Housing -individliche area of the separator is not substantially compressed by the Endsektor; and B) the bead edge comprises a thickened zone adjacent the inner wall / housing such that in its undefebned state it is greater in radial extent than the radial depth of the fillet, the fillet being at a radial depth of at least the two / / has the pitch between the end sector and the inner wall: / j and a deep recessed zone abutting the end sector, which is compensated by the thickened zone, such that squeezing of the separator / when installed in the housing is prevented 2 pressure-accumulator device according to item 1, characterized in that the end sector of the ring-passing stopper V ;. Segmentes around is * ..: ///. :. :: / ": ^: ' 3 »Öruckspeichervorrichtung according to Punlct 1, characterized / in that the end sector of the holding segment rolled 4. Pressure accumulator device according to item 1, characterized in that the Endsektor is a separate toric ring segment which is provided on the radially outer end of the hook-shaped sector _o The pressure accumulator device according to item 4, characterized in that the toric ring segment is formed of resilient material which is harder than the material of the separator, and the toric ring segment is eccentric to the free end of the hook-shaped sector 39 3 <$ -21- 11 .10.1979 ... ; ; . ; ; :.:: 55 644/17 β. D3 re-storage device according to item 1, characterized in that the fillet has generally radially extending flanks slightly inclined towards each other · 7, Bruckspeichervorrichtung according to item 6, characterized in that a first edge adjacent to the end sector substantially perpendicular to the center position of the center line of the Separatorseitenwand runs, ie between Paihestellung and extended position in which: separator presses against the inner wall of the housing . 8, pressure accumulator device according to point 7j, characterized in that the first flank of flattened kege is blunt-shaped figure ···: ' .9 * pressure accumulator device according to item 7, characterized in that the distance d., Between the end sector and the inner wall of the housing is smaller than the length d ~ of the first plank, which describes the clamping shoulder for the Yfulstrand smaller than hakenfÖri-üigen the length d ^of: sector in the Innenseit.e the first plank or • equal to said length and greater than the length of the final sector dp between: its radially outer side, and; ,: his transition to the first plank «: 10, bridge memory device according to ..Punlct 7, characterized in that a second .: plank of the fillet connects to the substantially cylindrical sector of the ring-holding segment around it and forms an angle with a vertical plane to the axis of the housing, the larger is the angle "the first"; Plank the fillet with its corresponding vertical plane forms. 213936 -22- 11.10.1979 55 644/17 11 · pressure storage apparatus according to item 10, characterized in that the second plank of a flattened ^cone:; stump-shaped figure is * A pressure accumulator device according to item 11, characterized in that a second plane having a vertical plane to the axis of the housing forms an angle which is at least twice as large as the angle which the first plane forms with its plane perpendicular to the axis, 13 »pressure storage apparatus according to item 1 ,, characterized in that the ^ in alignment with your final sector of the holding egmentes measured height of the fillet equal to the difference between the radial depth of the fillet and the distance between the final sector and the inner wall of the housing is _β; ; ^ _Λ ; -, - 14. The pressure accumulator device according to item 1, characterized in that the annular retaining segment is fixed to the housing by connecting means at the end of the cylindrical sector remote from the transition zone (1). . ^: . .. '' / ^. :: ". · '-;'' ·. /. ',. , ^{v ·:} 15e pressure accumulator device according to point 14 », characterized in that the end of the cylindrical sector has an angled edge to the length of the connecting means -. ; · having" · /. .. '.' .- _: '..- """-,.'; · ... ''/ · ". '.' . '. '''.: ... ^: 16 Druckspeichervorricitung to item 1, characterized in that the housing consists of a first and a second shell segment, each of which forms one of the • -; .. j .: end faces of the housing and an in. ···, a ring-shaped inclined edge; ending cylindri-7.:; '; see section in which edge the surrounding 2/139 3 ; -23- 11.10.1979 , V. '.. ν. /', -.; ., ''/;' , , _: 55 644/17 /: running retaining segment offset axially thereof used 1-7 ♦ Pressure accumulator device according to point T, characterized in that the .Übergangszone formed as a fillet 18, accumulator device according to item 1, characterized in that the transition zone is substantially frusto-conical,. _: Drawings;