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Патент USA US2127519

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Aug; 23,1938.
-
V K, JAGSQHITZX
2,127,519
COLLAPSIBLE GAS HOLDER
Filed Jan. 18, 1956
‘
‘-
BY
5 Sheets-Sheet 1
-
‘-
‘ATTORNEY.
Aug. 23, 1938.
‘
‘ K. JAGSCHIQTZ
'
'
2,127,519
COLLAPSIBLE GAS HOLDER
Filed Jan. 18, 1936
'3 Sheets-Sheet 2
-
INVENTQR.
Kan rad fayscé Liz
BY‘
/
1
é
.
»
f‘.
» ATTORNEY.‘
‘Aug. 2a, 1938.
K. JAGISCHITZ
' 2,127,519
. COLLAPSIBLE GAS HOLDER
" Filed Jan. 18, 1936
3 Sheets-Sheet 3_
INVENTOR
‘
Patented Aug. 23, v1938
1
. UNITED STATES
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__
2,127,519
PATENT orries
2,127,519
COLLAPSIBLE GAS HOLDER
Konrad Jagschitz, Mainz-Gustavsburg, Germany,
assignor to Maschinenfabrik Augsburg-Num
berg A. G., Nuremberg, Germany, ‘a corporation
of Germany
Application January 18, 1936, Serial No. 59,686 .
In Germany-February 8, 1935
16 Claims.
This invention relates to collapsible gasholders
of the type in which the shell is undulated so that
it resembles a bellows and can be expanded and
collapsed. The gas enclosed in the undulated
shell is, of course, under pressure, and as the
sheet-metal plates of which the shell is composed
are more or less sharply curved only in certain
regions whereas other parts are comparatively
flat, the internal pressure tends to bulge out said
10 comparatively ?at portions of the undulated shell.
Owing thereto, there arise stresses, especially cir
cumferential stresses‘, which can be computed,
controlled and overcome only with-difficulty. In
order to provide for the necessary safety, the
15 sheet-metal plates must be comparatively thick,
which entails, however, the drawback that the
elasticity of the undulated portions, or of the en
tire shell itself, is not as great’ as is desired and
as would be useful for the purpose in view.
20
The object of the present invention is to render
it possible to utilize satisfactorily thinner sheet
metal plates, and for this purpose undulated
plates made of relatively thin sheet-metal are
combined with rigid rods which constitute sup
25 ports for the undulations and prevent their bulg
ing-out. The arrangement of said rods relative
to the sheet-metal undulations is such that
changes in the undulations under the internal
pressure of the gas cannot exceed a certain maxi
30 mum, and it is even possiblev to determine the
alterations of the undulations in such a way as
to prevent excessive stresses caused by detri
mental alterations.
'
As the shape of the undulations in the expanded
35 state of the shell is different from that in the
collapsed state of the same, there exists, of course,
a medium shape half-way between the two.
It
is of advantage to accommodate the shape of the
above-mentioned rods to this medium shape. The
40. rods are always rigid, and those rods which follow
one another in vertical direction in correspond
ence with the undulations constitute, as it were, a
zigzag shaped chain, the links of which are formed
by the successive rods. Such “rod-chains” are
45 arranged around the entire circumference of the
'
'
(01. 48-5178)
individual rod-chains and the shell, or its undu
lations, are movably connected with one ‘another
at certain places, as is more fully explained here
inafter.
‘
The rods constituting the rod-chains are, of
course, connected with one another at their inner
ends, as well as at their outer. ones; at their
inner ends either directly or by the intermediary
of short links, generally straight links, whereas
at the outer ends said rods are, as a rule, con
10
nected by curved links ?tting to the curves of the
shell at the outer bends of the undulations.
It has already been mentioned that portions of
the undulations are ‘comparatively ?at. This is,
,
however, not absolutely necessary in all cases. 15
There may be a bend or bends also in said por
tions, the purpose being to increase the certainty
of prevention of excessive stresses. In a pre~
ferred form of this construction‘ I provide every
comparatively ?at portion of the undulations of 20
the shell with a plurality of said additional bends,
generally two, each of which is connected with
the adjacent portion of the associated rigid rod
by means of a link hinged at one end to said rod
and at the other end to the respective bend, as is 25
likewise more fully described hereinafter. . '
The invention is illustrated diagrammatically
and by way of example on the accompanying
drawings on which Figure 1 is a vertical section
through a portion of an undulated sheet-metal '
shell, in combination with the associated rigid
rods which are shown in side-view, the undulation
being partly expanded. Figure 2 is a similar rep
'resentation showing the undulations collapsed,
there being, however, shown in this ?gure a great 35
er number of undulations and, therefore, also of
said rods. Figure 3 is a horizontal section along
the line A-B of Fig. 1. Figure 4 is a view similar
to Fig. l but is drawn to an enlarged scale rela
tive to Fig. 1 and shows a modi?ed constructional 40.
form. Fig. 5 shows the same parts in collapsed
state; and Fig. 6 is a perspective view of a por- '
tion of the gasholder shell and associated rein
forcing structure according to Fig. 1.
On the drawings, a denotes the sheet-metal 45
shell, or the undulations of the same, and b, b’
denote the rigid rods which are located'on the out
the bottom of the gasholder and the uppermost side of the shell and extend more or less trans
end thereof is attached to the top or ceiling of vers-ely'thereto. The‘internal pressure to which
the same. The entire set of the rod~chains thus the shell is subjected at its inner surface must, 50
therefore, be assumed to be directed from the
constitutes a collapsible, articulated skeleton re
inforcing structure which encloses the collapsible right to the left in the figures. ‘The pressure of
shell but permits ready expansion and‘v collapse the gas tends to bulge the undulations outwardly,
at the bends of the undulations while taking up especially when the shell is expanded. That un
shell at certain distances from one another. The
lowermost end of every rod-chain is attached to
55; the pressure exerted thereon by the shell. The
desired and, perhaps, also detrimental effect is 55.
2
2,127,519
prevented by the rigid rods 1), b’ which are con
nected with one another in series in the upward
direction, the successive rods forming, in the more
or less expanded state of the shell, a zig-zag line,
as appears especially from Fig. 1. The successive
rods are connected with one another at their inner
tion. The stiffening rods are, in this modi?ed
constructional form, practically the same as
those already described, but not only are their
outer ends connected with one another by links,
as the curved links h’, but also their inner ends,
as by links 7' which, however, are straight, as
ends by hinges d and at their outer ends by curved
shown.
‘
The main difference in Figs. 4 and 5 over Figs.
‘1-3 consists in the fact that the portions of the
The rods 11, b’ are, however, connected also with
10 the undulations a by means of hinges 0 located?’ undulations between the straight and said curved 10
links 71. and hinges e.
‘
about in the middle portions of the rods. It is
not necessary that these connections be consti
tuted only of hinges, i. e. by movable members;
rivets or bolts may be used ‘instead of hinge con
15 nections or the parts in question may be united
by welding.
The superposed portions of the undulations
which lie adjacent to one another, that is, the con
secutive oppositely inclined portions of the shell,
20 as seen in Fig. 1, are arranged symmetrically ‘with
respect to the horizontal plane in which the re
spective hinge d is located; that is, the general
planes of their surfaces make approximately equal
angles with the horizontal. In the fully collapsed
25 condition of the gas-holder, therefore, as shown
in Fig. 2, the shell portions extend‘roughly hori
zontally. The shell portions may, however, also
be so constructed as to be symmetrical with re
spect to planes oblique to the horizontal, so that
30 in the collapsed condition of the shell the convo
, lutions lie in planes directed obliquely downward
ly; as a result, any water present on their outer
surface can ?ow 01f.
'
The main portions of the undulations, i. e. be
35 tween their inner and their outer bends, are com
paratively flat, or only Very slightly curved, as
appears from Fig. 1. These curves undergo slight
changes when the undulations are expanded and
collapsed, generally, in such manner that the
curves approach the rods b along a portion of
their length and move away from the rods along
other portions of their length. This curvature
depends also upon the shape of the rods b‘, b’.
links 7' and h’v are subdivided into smaller undu
lations, each of which includes a bend it which is
directed approximately at right angles to the
main part of the undulations and is movably con
nected with the adjacent part of the associated 15
stiffening rod b or b’ by links m permitting small
movements of the undulations with respect to
said rods; This con?guration of the undulations
facilitates the changes of the form which the shell
undergoes when being expanded and collapsed. 20
In other words: the shell is prevented from un
dergoing unintended and detrimental changes in
the form of the undulations.
Weights n of concrete or other material may be
secured to pairs of rods b and b’ for increasing 25
the gas pressure required to expand the gasholder,
as. is well understood in the art. The ends of the
articulated reinforcing structure may be connect
ed to the top and bottom of the shell in any suit
able way, as by means of short links 0, see Fig. 6, 30
mounted on brackets p ?xed to the shell.
It is apparent that the changes in the form of
the undulations when the shell is expanded or
collapsed are taken up especially by the bends k
which give more easily than the other portions of ‘
the undulations. Dangerous stresses are, there~
fore, completely obviated.
I desire to call attention to my copending ap
plications Ser. Nos. 10,533 and 65.004, the earlier
application disclosing and claiming broadly gas
holders of the collapsible type; the later applica
tion describing and claiming an improved form
of reinforcement for a collapsible gasholder.
which need not in every case be straight but may
45 be slightly curved so as to be able to contact with
I claim:
1. In a gasholder, the combination of a collapsi~
one connection, such as c or an equivalent one,
ble shell formed by a series of upwardly extending
undulations of ?exible material, and relatively
the undulations of the shell. And instead of only
two or more such connections may be provided.
There may also be horizontal connections, such
as f, (Figs. 3 and 6), which consist of horizontal
bars connecting two adjacent bends h with one
another, always in pairs, as appear from Fig. 3.
These bars extend, thus, tangentially with re
spect to the circumference of the gasholder shell.
55 Furthermore, it is possible to connect a bend h
and a hinge d located diagonally thereto by a
diagonal rod g, by which the system is stiffened.
The members b, b’, j and g form frames which are
roughly triangular in shape and which follow one
60 another at intervals around the circumference
of the shell. The intervals, viz. the empty spaces,
where there are no bars like f and g, are necessary
because the diameter of the shell changes when it
is expanded or collapsed, as will be clear without
65 further explanation.
I have already mentioned that every compara
tively ?at or only very slightly curved portion of
rigid rods extending transversely approximately
parallel to successive individual undulations‘ and
adjacent thereto, said rods acting to stiffen the 50
material of said undulations to resist distortion
by the pressure of the gas stored within said shell.
2. In a gasholder, the combination of a col
lapsible shell formed by a series of upwardly ex
tending undulations of ?exible material, relatively 55
rigid rods extending transversely of the undula~
tions approximately parallel to the individual un
dulations and adjacent thereto, said rods acting
to stiffen the material of said undulations to resist
distortion by the pressure of the gas stored within 60
the shell, and means connecting said rods and the
associated undulations with one another.
3. A gasholder as speci?ed in claim. 2, in which
the stiffening rods and the associated undulations
are connected for movement relative to each
the undulations may be connected with the asso
ciated stiffening rod by more than one member,
other.
4. A gasholder as speci?ed in claim 2, in which
the stiffening rods and the associated undulations
70 such as c or an equivalent therefor. A construc
tional form of this kind is shown in Figs. 4 and 5
and is distinguished from the constructional form.
shown in Figs. 1-3 not merely in the use of a plu
rality of connections, but also by a particular
75 shape of the portions of the undulations in ques
are connected with one another approximately at
the middle portion of every rod.
5. A gasholder as speci?ed in claim 2, in which
rods are located externally of the shell and in
which the superposed rods disposed within the
two successive superposed portions of an undu
2,127,519
lation are movably connected with one" another
at their inner ends.
6. A gasholder as speci?ed in claim 2, in which
the superposed rods associated with twosucces
sive superposed portions of an undulation are con
nected with one another at their outer ends.
7. A gasholder as speci?ed in claim 2, in which
the rods follow one another in generally vertical’
direction and are movably connected in series
10 with one another at their inner and outer ends so
as to constitute a rod-chain having said rods as
links.
,
8. A gasholder as speci?ed in claim 2, including
horizontal bars connecting the sti?ening rods in
15 pairs with one another.
9. A gasholder as speci?ed in claim 2, in which
the sti?ening rods follow one another in generally
vertical direction and are movably connected in
series with one another, the rods thus forming
vertically extending chains the links of which are
3
the undulation and the said rods at approxi
mately said intermediate bends.
12. A gasholder as speci?ed in claim 2, in which
relatively small intermediate bends are provided
in the comparatively ?at portions of the undula
tions between their inner and outer bends, the
undulations and the rods being connected for
relative movement with respect to each other at
approximately said intermediate bends.
13. In a gasholder, the combination of a col
lapsible shell formed of a series of upwardly ex
tending undulations of ?exible material, and a
plurality of upwardly extending chains formed
at least in part of relatively rigid rods parallel
ing approximately the portions of the undulations 15
between the inner and outer bends of the latter
and connected to said shell to stiffen the same.
14. A gasholder as set forth in claim 13, wherein
‘said rod-chains are connected in pairs by rela
tively rigid members to form individual articu
formed by said rods, means connecting the lower ' lated framework sections.
ends of the rod-chains with the bottom of the
gasholder, and means connecting the upper ends
of the rod-chains with the top of the gasholder.
10. A gasholder as speci?ed in claim 2, in
which the rods follow one another in generally
vertical direction and are movably connected in
series with one another at their inner and outer
ends, the rods thus forming a plurality of rod
30 chains, the rod-chains being disposed about the
circumference of the shell and constituting a col
lapsible reinforcing structure enclosing the col
lapsible shell, and connections between the upper
C13 C21
ends of the rod chains and the topyof the gas
holder.
.
11. In a gasholder, the combination of a col
rected toward said rods, and means connecting
20
15. In a gasholder, the combination of a col
lapsible shell composed of a series of upwardly
extending undulations of ?exible material, and
a sti?ening-framework extending upwardly along 25
the shell and composed at least in part of rela
tively rigid rods pivotally associated at their
adjacent ends at the inner and outer bends of the
shell and capable of assuming approximately the
zig-zag shape of the undulations so as to- con?ne 30
such undulations . and hold the same against
distortion.
‘
.
16. A gasholder comprising a collapsible shell
formed of a series of upwardly extending undu
lations, an articulated framework composed of 35
relatively rigid rod members distributed cifcum~
ferentially about the gasholder, said rod mem
lapsible shell formed of upwardly extending un
dulations of flexible material, relatively rigid rods bers extending along the parts of the undulations
between the inner and outer bends in zig-zag
40 extending adjacent to and approximately parallel .fashion and being connected in upwardly ex
to the portions of the undulations between their tending series at approximately such bends to
inner and outer bends, said rods being arranged
form continuous upwardly extending rod-chains,
so as to stiiTen the shell, said portions being pro
vided with relatively small intermediate bends di
10
40
and connections between the rod chains and the .,
shell.
'
KONRAD JAGSCHITZ.
45
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