DE2141154A1 - Pneumatic device for the rapid introduction of certain amounts of gas into a deformable container - Google Patents

Description

Dipl.-1 ng. UIp '.. cu-c. rb \.

DlETRiCH LCWiriSiCY, J7 A _{et al}

PATENTAiSiVVALT ' ^ä '

8 MönchonJH- Gotthardstr. 81

Telephone 56 17 62

6726 - V

ί Societe Generale de Constructions Electriques et Mecaniques (ALSTHOM)

j Paris 16, 38, avenue Kleber (France)

"Pneumatic device for the rapid introduction of certain Amount of gas in a deformable container "

Priority dated August 27, 1970 from the French patent application No. 70/31

ι The invention relates to a pneumatic

Device for the rapid introduction of certain amounts of gas into a deformable container and is directed in particular on the use of a pressure accumulator which has only a small volume compared to the container, this container a certain amount of a gas is to be supplied which has a high pressure compared to the pressure of the container, to enable rapid gas exchange after the two elements have been connected.

Is the volume of a deformable container that contains a gas under a certain pressure to a certain Value are increased, it is known that it is sufficient to connect the container to a pressure accumulator which has a higher pressure has, whereby a valve is opened until the desired volume is reached. If this is done, so the speed of the pressure shift depends on the application '

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one under very high. Pressure standing pressure accumulator opposite the pressure of the deformable container, which in turn is associated with a short opening time of the valve. It turns out It is therefore difficult to determine the opening time without an additional regulation and control system, the increase in volume to be achieved is equivalent to.

The aim of the invention is therefore! Eliminating this disadvantage, the task set thereby; is solved that between the container, which is under high pressure, supplies standing gas and the deformable container, whose gas is under low pressure, uses a small pressure accumulator which is filled with high pressure gas and connected to the container. It is therefore sufficient to use the filled To connect pressure accumulator to the container in order to quickly • bring the thus dosed volume into this, and also the Safety regulations are met, i.e. not too large a quantity of the high-pressure gas in the gas to be filled Container is introduced, eliminating any risk to this container damage can be excluded.

Another object of the invention is to provide a pneumatic device for rapid insertion certain amounts of gas in a pressurized, deformable container and awar from a container under high pressure, characterized in that it has a includes working with metering pressure accumulator, which is assigned to a distributor, with the help of which the pressure accumulator via the Container is first pressurized and then emptied into the container.

Further advantages and characteristics of the invention constructed device emerge from the following description in conjunction with the drawings. Show it:

1 - the diagram of the pneumatic device constructed ^{according to the invention for introducing a gas into a cylinder 1} with a flat piston, the work precautions

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Fig. 2 'Fig. 3 -

operations are carried out via a three-way distributor

the; ,

j a schematic representation of the three jobs!

lungs of the distributor (positions a, b and c); i

ι a device for the very fast introduction of a;

Gas into a cylinder »with a movable piston, whereby two groups of devices, the »pressure accumulator and the distrib ler, are arranged in parallel and. j

an application of the device according to the invention! a pneumatic suspension system of a railway wa-5 gens. I.

In Figure 1, a container 1 is shown, which by the regulation of a compressor to which it is connected via the line symbolically indicated by the straight arrow 2 on a pressure P is held. The metering pressure accumulator 3 and the cylinder 4 with a movable piston in the plane 5 are limited Volume V under a pressure p. The pressure accumulator and cylinder are individually connected to the three-way distributor 6.

The distributor 6 designated in FIG. 2a establishes a connection via the lines 1 * and 3 * between the container 1 and the pressure accumulator 3, which is thus filled with gas at a pressure P. In the illustration in FIG. 2b, the pressure accumulator 3 discharges its metered gas volume under a pressure P into the cylinder 4 under a pressure ρ, specifically via the lines ^3f and 4 '. The piston of the cylinder is raised to level 7 (shown with a dot-dash line in FIG. 1), as a result of which there is a level difference denoted by 8 compared to the filling level 5.

In the illustration of FIG. 2c, the print transfer process is completed. Thus the connection between the Container 1 and the pressure accumulator 3 restored, the latter being subjected to a pressure P via line 3 '* j By a second discharge of the accumulator 3 into the cylinder 4, the level of the piston is brought to a level 9,

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j what a level difference 10 compared to the first level 5 as well! J corresponds to double the value of the difference ¹ 8 after the first pressure equalization.

In the illustration of Figure 3, two units are shown, i.e. ί the accumulator 3 and the manifold 6, which are parallel between the

I container 1 and the cylinder 4 are arranged. Will the two;

J distributor 6 moves synchronously, so can be done by a single work! gear of the piston 5 to be lifted up to level 11, while this would be done with: only one pressure accumulator with two movements.

The opening time needs to be within this device! . of the distributor cannot be checked or controlled because the pressure r

compensation process in time, i.e. between pressure accumulator 3 and cylinder ; of 4 as practically negligible compared to the opening time

of the distributor can be viewed (time during which it remains in the position shown schematically in FIG. 2b). |

: In the illustration of Figure 4, the structure of a j

; Wagons held by the pressure devices I ¹ +, which rest on the chassis represented by the triangle 13.

! If curves are negotiated at high speed, I

j the structure is pressed under the action of centrifugal force F towards the outside of the curve. The center of gravity G of the assembly ¹ is thus lower the power Pa, which results from the weight P and the force F.

In order to ensure that the passengers in curves remain unaffected by these influences, a certain Elevation of the rails is provided, through which it is possible to drive up to a limit speed without the passengers be adversely affected.

By using the device constructed according to the invention, this limit speed can be reduced by inclining the construction be increased inwards. This is a kind of artificial cant A few degrees achieved in that the outer pressure device 14- is pressurized as soon as the carriage is in a Turns into a curve. In order to do this, artificial superelevation occurs automatically.

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a lateral acceleration sensor 16 is sent to the control system 17, which in turn controls the right distributor 6, it is assumed that the centrifugal force acts in direction F, i.e. that the center of gravity of the curve is in the illustration the figure · + is on the left. The respective pressurization as well as the dimensions of the pressure devices as well as the choice of the respective pressure depend on the amount of the pneumatic Spring systems from the energy required, which acts on the car body within a very short time.

If the right pressure devices are full, .so will the pressure accumulator 3 is again pressurized by reconnecting to the container 1, if necessary for a to be prepared for a new corner entry.

If the wagon exits the curve, the lateral acceleration sensor does not send any further commands. As long as the first level has not yet been reached, the air passes through a valve 3 ΛΛ q

In order to be able to do justice to the fact that it can be right and left turns, two devices constructed according to the invention are connected in parallel on a common container 1, with either the right or the left group of printing devices Ik being fed independently of one another

! will.

j If necessary, a larger one should be added at the same time

Any group of pressure devices can are fed simultaneously via two units, pressure accumulator and distributor, as can be seen from the parallel arrangement in FIG. going on.

Of course, the structure according to the invention can

This device can also be used on other types of vehicles, such as, for example, on transport vehicles or stationary transport devices, on machine tools and on transfer roads. In addition, the invention is not limited to the form of application described, but extends to all variants that can be derived therefrom. Deformable containers can also be understood to be those with fixed walls, eg pneumatic pistons or pressure cylinders, as well as those with deformable walls, * __.... "- _ .

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Claims (1)

Patent claims: 3. Pneumatic device for the rapid introduction of certain
Amount of gas in a deformable one under low pressure Container, characterized in that this one with dosage! working pressure accumulator (3), which is assigned to a distributor (6) j, with the help of which the pressure accumulator (3) is first subjected to high pressure and applied to the container (1) via j i is then emptied into the container. j Pneumatic device according to claim 1, characterized marked j net that the distributor (6) has three channels, each with the container, with the pressure accumulator (3) and the container (1) j are connected and has two positions, one of which is pressurization of the accumulator (3) at high pressure; through the container (1) and the other a depressurization of the; Pressure accumulator (3) in the container at low pressure i light, the transition from one position to the other to j an increase in a constant volume of the gas in the Container leads. ! Pneumatic device according to Claim 1, characterized in that for the very rapid introduction of the gas into a deformable container, two units, a pressure accumulator (3) and
a manifold (6) are arranged in parallel between the container and the high-pressure container (1) and are actuated at the same time
will. Pneumatic device according to claim 1, characterized in that that a single high-pressure container (1) several in parallel 2 09810/1203 2U1154 Pressure devices (3, 6) feeds each deformable Individual containers are assigned, each of these Druckvorrich-j functions (3,6) is operated independently of the other. (16) is controlled to be monitored parameter: Pneumatic device according to claim 1, characterized in that "the detector from the automatic operation of this apparatus is ensured by the \ control of the distributor. 209810/1203