DE716882C - With an external reinforcement, welded container - Google Patents

Description

GERMAN EMPIRE

Il MRl 1942

ISSUED JANUARY 31 Ϊ942

REICH PATENT OFFICE

.M 716882 CLASS 17 g GROUP

-E 50 / J /

Andre Freudenberg in Paris

has been named as the inventor.

Etablissements Freudenberg in Paris

Patented in the German Reich on January 28, 1938 Patent issued January 8, 1942

is used.

The invention relates to a container for compressed air provided with an external reinforcement or liquefied gases, consisting of a cylindrical central part as well as tapering End parts consists. One already knows which are provided with an outer wire wrapping Containers of this type, which are composed of parts which are welded to one another are connected, which run in the transverse direction. The use of such cross welds but represents a significant disadvantage; because if you go through the bottoms of a container with the middle body a weld seam connects, so one is forced if the container is high inner Printing is exposed to still provide a special longitudinal reinforcement. Such However, longitudinal reinforcement can only be carried out properly and with great difficulty and under no circumstances make with a wire wrap; because it is impossible to put all the line wires in to tension in a consistent manner. As a result, the use of transverse welds must be used for the manufacture of high-pressure cylinders are avoided; because a defective one Longitudinal reinforcement can be extremely dangerous because of accidents from exploding the bottle and jumping off the cross welds with the cylindrical middle part connected container ends can arise.

So far there has been a prejudice against the use of welded reinforcement with external reinforcement provided high-pressure snapping existed, since it was assumed that such containers not the security or compressive strength

that can provide the safety of the containers made of seamless tubing or Bottles equals.

The present invention therefore has for its object, those with external reinforcement to produce welded high-pressure containers that are safe and pressure-resistant despite their low weight offer at least the safety of the containers made of ίο seamless tubes or Bottles is the same and where the high pressure bottles with over-welded seams occurring hazards have been eliminated.

According to the invention, the containers are made for this purpose in a manner known per se several by forging, pressing, drawing, etc. from a sheet or metal plate formed parts assembled, the edges of which in through the axis of the container going .planes and connected to each other at these edges with welds are. The container constructed in this way is reinforced in its middle part, for example by wrapping very strong steel wire.

Special reinforcements, such as steel wire reinforcement, are also required for the end parts of the container. Reinforcement caps or the like. Provided.

jo One has for one as protective armor, Multi-cell gas container of small format, which can be used in particular for gas mask wearers proposed to assemble this container from two parts formed from sheet metal ts and to connect it by two mutually perpendicular groups of λόπ welds. This known container, in which, moreover, no external reinforcement is provided and due to its external shape to cannot be attached either, but does not offer sufficient security, as a result the special arrangement of the weld seams, strong deformations even at low gas pressures the container walls occur and the risk of the container bursting at some that cannot be determined in advance And exists in any unforeseeable form.

In contrast, a high-pressure bottle designed according to the invention ensures a adequate security. Because if for some reason the weld seam is longitudinal two surface lines of the cylindrical part of the container have a weak point Γ), the wrapping would prevent the container from bursting under the action of internal pressure, and in the worst case one would escape of gas through the reinforcement wires hino through determine. On the other hand, it is clear. that in the longitudinal direction the welded bottle formed in this way is approximately the same Has strength like an emc bottle or a container made of a seamless tube made of the same metal with the same Wall thickness would be made.

If, as a result of manufacturing difficulties, this cannot be done without considerable additional costs the wire unwinding could extend to the end portions, one could use these end portions secure in the following way:

The ends of the shells forming the containers have the ideal spherical shape slightly different shape. In one or more perpendicular to the longitudinal axis of the shell extending planes one or more hollow ribs are provided for the following purpose :

i. to reinforce the Festigkeil der Endteilc and accordingly the stresses on the weld seams under the action of the internal pressure of the container to diminish;

2. to enable the placement of one or more reinforcements, either made of hard steel metal rings that have been forced open or heat-shrunk on or made of high-strength steel wire. These reinforcements take you accordingly their cross-section and their voltage when applied to the container can be regulated Part of the stresses caused by the internal pressure.

One can thus reduce the stresses on the welds of the spherical or other Lower the end parts so far that no accident is to be feared. The one or both spherical or differently designed end parts can also be placed in a mouthpiece or a bottle neck run out, which in turn is reinforced and thus forms an additional resistance element. The strength of the non-cylindrical end portions of the container can also be determined by others Means to be improved as shown below: "

r. You can go through those spherical or other shaped end caps of the container Pressing, embossing, swaging or any other method to make grooves in a the plane passing through the center of the hemisphere has a larger cross-section than that part of the sphere with which they cooperate, their profile being such it is certain that they are best able to withstand the stresses and strains:

2. One or more reinforcements can be arranged in the direction of the large circles of the hemispheres in planes that extend as far as possible through the axis of the container. The level which has the greatest effectiveness 12.0 ur. Eliminate the strength reduction offers, which one as a result of the presence of a

Weld seam on the hemispheres can be feared is perpendicular to the plane of this Weld.

These reinforcements are either on the container directly or in connection attached to the reinforcements perpendicular to the axis of the container or such designed that they are connected to the two hemispherical ends. According to another embodiment, one can also reinforce the ends of the bottles or the like by attaching them to a hemispherical, optionally covered cap made of the same material as the bottle, which is exactly on the surface of the hemispheres. This cap is placed on the part of the bottle it covers any suitable way, if necessary with prior tinning of the contact surfaces, attached by soldering or the like. The cap becomes part of the under influence absorb the internal pressure on the hemispherical linden trees and thereby correspondingly reduce the stresses exerted on the weld seams these end parts are exposed. The thickness of the cap is calculated so that these stresses in the desired Extent can be reduced. If it is not necessary that the cap also also serves to increase the impact resistance of the lind parts, or if you can achieve a weight saving, you will use the cap can thereby train more easily that one provides holes or cutouts in it or that only the part that is useful in terms of reinforcing the welds is left standing. This useful part of the cap surface is either between two levels, going through the axis of the bottle and symmetrical with respect to the plane of the Weld, or between two planes that are equidistant from the Located level of the weld seam and run parallel to this. Limited in the latter case the surface of the cap that has been used in this way extends to a sufficiently wide band that covers the weld seam and closes both sides of this seam is welded or soldered to the hemisphere.

Incidentally, this band could also run over the entire length of the weld seam of the two * by welding connected parts of the container continue and would in this case be covered by the wire reinforcement on the cylindrical part of the tank. If the wall thickness of the shells forming the container is chosen so that reinforcement on the entire cylindrical

ßo part is not necessary so that the bottle can withstand a certain pressure, one would cover the weld seam along its entire length when using such a device and reinforcing tape create a welded container that has the same strength as a seamless container could have the same material and the same thickness.

All the arrangements described above to reinforce the welds of the end parts 7 " but the container could be more or less partially reinforced by wire reinforcement End parts are replaced, provided that the spherical shape of these end parts is a bit is changed. '/ 5

You can actually wrap a wire at a very short distance from the ends of the bottles begin or stop when you consider the spherical shape of the cylindrical Central part adjoining end parts so that these end parts are parts of an ellipsoid, paraboloid, truncated cone or another body of revolution of such a profile that the wire reinforcement is easy to execute.

By increasing the axial height of this immediate surface, one becomes arbitrary reduce the diameter of the end part forming a cap and, accordingly, that of the weld seam of this cap can reduce the stresses absorbed.

Of course, all of the means provided above for reinforcing the end parts the bottles or containers can be used individually or in combination.

For the purpose of explanation, the following are given by way of example with reference to the drawings some embodiments of the container according to the invention are described. i «o ·

Fig. Ι shows a side elevation of one of the shells that make up the container.

Fig. 2 shows in elevation, partly in section, the complete container.

Figures 3 and 4 show one way of reinforcing the end portions from the side and end of the container.

FIGS. 5 and 6 show, corresponding to FIGS. 3 and 4, a different type of reinforcement. no

7 shows a container from the side with reinforcement caps placed on the end parts, one cap being omitted is.

Figure 8 is a section through a single cap.

9 and 10 show embodiments in which the reinforcement cap of the container ends is broken.

- Fig. Ι r shows one on the end part of the Bottle attached wire reinforcement.

On Fig. Ι is a suitable metal

Pressed shell is shown, which forms one half of the whole container. This shell has a cylindrical main part c and end parts b, which more or less approximate the shape of a quarter sphere. Two shells of the same shape are welded together at longitudinal joints, as can be seen in FIG. 2: the cylindrical part is provided with a reinforcement in the form of a wire wrapping c : o. Between the part α and the end parts b , grooves d (FIG. 1) are provided, into which ring e (FIG. 2) is forcibly inserted or hot-shrunk; the bottle necks / provided at each end of the container are also provided with reinforcing rings g.

In Figs. 3 and 4, the container body a is also wrapped with metal wire c , and the end portions b contain four fillets h. In this case, four reinforcement ribs k are provided perpendicular to the container axis and a rib I which is at a right angle through the container axis but at right angles to the plane forming the weld seam m (shown in dashed lines in FIG. 4). There is a bottle neck only at one end and is provided with a reinforcement ring g as in Figs.

The embodiment according to FIGS. 5 and 6 shows some differences: the reinforcing rings running perpendicular to the axis of the container remain, but the end parts are reinforced with two bands η which, as can be seen in FIG. 5, encompass the two end parts of the container and cross each other roughly in the middle of the container.

7 and 8, a container is shown in which the central part α also has a wire wrapping c , while the bottle necks are provided with reinforcing rings g. In this case, however, the two end parts are reinforced by caps 0 , which are shown individually and in section on FIG. These caps are pressed or shrunk onto the end parts and, in the example shown, held in place by soldering or welding. In order to achieve a weight saving, the caps can be pierced by openings ρ. In Fig. 9, the end caps 0 are punched out and contain only a narrow end ring or an end cap q covering the outermost points of the container and a reinforcing ring k of the type shown in FIGS. 3 and 5 and ribs r ₃ extending along a large circle of the hemispherical end part b are arranged and cover the welds in on each side. If desired, the small end cap q and the ring k can be omitted.

Fig. 10 shows a similar container, r provided in which a reinforcement rib and is extended at j over the entire length of the container, such that the weld m fully by this rib r, s is covered. This means can be provided in place of a wire wrapping of the body a of the container or used in connection with such a wire reinforcement. In order for the ribs r, s to be effective, they must expediently be soldered to the container at their edge by means of a metal with a low melting point in order to avoid weakening of the container walls at these points.

Finally, in the embodiment according to FIG. 11, the end part b is slightly modified in such a way that it can be reinforced by means of steel wire reinforcement. 8c This reinforcement is feasible and remains in place even if it begins near the extreme end of the container or is extended to this end. In general, it is difficult to wire reinforcement 8 ;; to be held on a spherical end portion of the container; but if the spherical end parts, as shown in Fig. 11, are modified in such a way that the end parts b adjoin the cylindrical body with a curved surface, the shape of which approximates the shape of a cone, an ellipsoid, a paraboloid or other suitable bodies of revolution so the wire rebar can be brought much more conveniently and much closer to the ends.

Claims (7)

Patent claims: 1. With an outer reinforcement, welded container for compressed or liquefied gases, which consists of a cylindrical main body and tapered end parts, characterized in that the container consists of several, preferably two in a known manner by forging, pressing, drawing, etc. from A sheet metal or a metal plate is composed of shaped parts, the edges of which lie in planes going through the container axis and which are connected to one another at these edges by welds, the central part (a) being reinforced in a manner known per se to increase its resistance to transverse stresses o. The like. (c) is provided. 2. Container according to claim r, characterized in that the end parts (&) with one or more planes running perpendicular to the longitudinal axis of the container lowing fillets (d) are provided, in the rings (e) are used forcefully or hot-shrunk (Fig. 2). 3. Container according to claim 1, characterized in that the end parts (&) are reinforced by ribs (/) which lie in a plane containing the longitudinal axis of the container, but perpendicular to the weld seam (m) (Figs. 3 and 4). 4. Container according to claim 1, characterized in that the end parts (b) are reinforced by bands («) which are placed around both approximately hemispherical end parts (b) of the container (Fig. 5 and 6). 5. Container according to claim i, characterized in that each of the end parts (b) of approximately hemispherical shape is protected against impacts by a metal cap (0) which essentially has the shape of the outer surface of the end part with which it is, for example, by soldering is connected and which is perforated or cut out to reduce its weight and in the latter case only contains a small end cap (q) covering only the outer container end, which is connected by straps (r) to a reinforcing ring (/ e) around the container is placed approximately at the junction between the cylindrical part (a) and the hemispherical end parts (b) (Fig. 7, 8 and 9). 6. A container according to claim 1, characterized in that the end caps (o) by two the welds (in) overlapping and by means of a metal of low melting point on the container walls along their edges soldered ribs or bands (r, s) are connected to to reinforce those wall parts that have been heated when welding together (Fig. 10). 7. Container according to claims 1 to 6, characterized in that the bottle neck (f) is reinforced by a ring (g). 1 sheet of drawings