DE2056619A1 - Automatic full limitation device - Google Patents

Description

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Patent attorney

Kar! A. 5 rose

D-0023: ".. - Puüach

Wncrsir.Z.T.;.: ....:.,.,. O / 3J931782

DBr / Fo Munich-Pullach, November 16, 1970

CLAUDE BERTHMD, Relais de la Vitarelle, Portiragnes 34, France

Automatic filling limitation device

The invention relates to underground storage tanks for Storage of flammable liquids of the kind used e.g. at petrol stations for motor vehicles and which are filled from time to time by tankers. Here it can occur that due to an error in the estimation of the contents of the storage container this overflows at the end of the filling process and creates a great risk of fire and explosion.

The subject of the invention is an automatic overflow protection when filling storage containers, which serves to to ensure security against the above-mentioned danger. This device is characterized in that it consists of a combination of the following components? One at the inlet of the reservoir that is to be filled should, arranged inlet valve which closes in the direction of the outlet; a locking device that, when latched, the inlet valve is open during normal filling of the contents of the reservoir holds, the inlet valve is automatically closed as a result of the

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pawl of the lock closes; and a float arranged in the storage container, which is connected to the locking device is connected in order to disengage them when a predetermined liquid level is reached in the storage container.

Since the liquid level in the reservoir drops because of the tapping, the one that also drops The float re-opens the valve and clicks into place in the open position by releasing the locking device.

Further advantageous details of the invention can be found in the following description and the accompanying drawing refer to, in which a preferred embodiment of the invention is illustrated by way of example. It shows:

1 shows a section in the side view of the device according to the invention, illustrated in the valve open position;

Fig. 2 shows a corresponding section of the device according to the invention closed valve;

FIG. 3 shows a section along the line 3-3 from FIG. 1.

The entire device as a component is designed such that it is in a receiving opening in the cover plate A of the Manhole of an underground storage container arranged

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can be. The device consists of two main sections, the first of which is outside the reservoir lies and the second is arranged within the storage container, these main sections at one on the Plate A welded mounting flange 1 are attached by means of screw bolts 1a.

The external main portion I consists from bottom to top of a first mounting flange 2 for the screws * ben 1a, a nozzle 3, a second flange 4 x, a, a chamber forming zylindrischenWandung 5 and a top flange 6, wherein the parts by welding together are connected. A further flange 8 is arranged on the flange 6 by means of screws 7, onto which a connecting piece 9 provided with an internal thread is welded. A conventional filling pipe 10 is screwed into the connecting piece 9, which at its upper end, likewise screwed on, carries a conventional filling mouthpiece 11.

E-in connector 12 provided with a flange 15 can be used for Connection to a further filling connection in the longitudinal direction of the usual practice can be provided.

The inner part II has a flange 14 for attachment to the plate A by means of screws 1a. This flange 14 is welded onto a tube 15, at the lower end of which is provided with a thread a cast connection 16 is screwed. An extension pipe 17 is screwed in at the bottom of the cast socket ^Λ 6.

A transverse shaft 18 is rotatably mounted in the connecting piece 16. This shaft 18 is articulated in sockets 19 at both of its ends held and frictionally locked with a lever 20

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bound, the other end of which with a float 21 through a screw 22 is connected. A transverse reinforcement 23 connects the two levers 20 by means of two screws 24.

A crank arm 25 is keyed on the shaft 18 and forms a joint 26 in which a roller 27 rotates about an axis 28 carried by the arms of the joint 26 in such a way that _; when the crank arm 25 rotates counterclockwise (Figure 1), that is, when the float 21 rises, the roller 27 begins to be supported against the lower end of a vertical push rod 29, which is slidably mounted in a guide 30 fixedly connected to the connector 16 , and this push rod 29 raises.

The other end of the crank arm 25 is also designed as a transverse joint with an axis 31 on which at one end two push rods 32 are articulated. These push rods 32 are with their others Ends pivotably attached to a guide jaw 33 which slides freely on the push rod 29.

Between the two flanges attached to the cover plate A of the manhole by means of screws 1a is a socket 35 pinched, (Se over arms 37 a zeni-ie.l. Lying Hub 36 carries * In the hub 36 a tube 38 can slide up and down vertically, its upper end into a Inlet valve carrier 39 screwed in iat, c & r via screws 41 connected to a valve head 40 3.et ·. Between the Yeηti! Carrier 39 and the valve head 40 is a disk 4p made of elastic or plastic material angeorr-ii.et., weleb <'& through the liquids in question r ·; -: - ht aiige «;:. \ i.f ~

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will open. A small hole 42a extends through the valve support 39, the valve head 40 and the disk 42 educated. An axial push rod 43 is in the valve carrier 39 and slides freely in a traverse attached to the inner surface of the flange 6.

The central opening of the flange 4 is formed with a bevel 4a, which serves as a seat for the disk 42 of the inlet valve. a

Locking balls 45 for the inlet valve, for example three pieces, are arranged in annular recesses in the wall of the tube 38 at the same distance. They have a diameter which is slightly larger than the thickness of the wall of the tube 38} so that they bear against the push rod as illustrated in FIG Support booms of a cup 46 formed in the hub 36. At its upper end, the push rod 29 has a turned-in part of smaller diameter and, as can be seen from FIGS. 1 and 2, offers a certain length | a section 47 of smaller diameter for disengaging the balls 45, which is terminated by two conical sections along the running length of the push rod 29. Its elastic mount 49 in the form of an embedded ring is arranged on the tube 38 below the hub 36 in order to limit the upward displacement of the tube 38. In the same way two further elastic mounts 50 and 51 are disposed on the push rod 29 on either side of guide 30 to the vertical displacement of this standard limit _(ge 29th

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Furthermore, a weak spring 52, the force of which is less than the weight of the inlet valve, is arranged in the tube 38 and so the carrier of the opening valve 39 is resilient mounted against the push rod 29.

The device according to the invention works in the following way: In the normal state and while the storage container is being filled the individual parts occupy the positions illustrated in FIG. The inlet valve 39, 40, 42 is held in the open position by the locking balls 4-5, which are indented on the conical bottom of the cap 36 and consequently the lowering of the tube 38 the the valve wears, prevent.

When the liquid level in the container reaches the float 21, this is raised and the roller 27 pushes the push rod 29 upwards, the section 47 of which has a reduced cross-section pushed between the balls 45 wire., whereby the disengagement of this ball 45 by displacement into the interior of the tube 38, thereby allowing downward movement of the inlet valve, which ao moves into the closed position and on his Seat. At this moment, the individual parts of the device according to the invention, which are illustrated in FIG. 2, take place Layers. It is therefore sufficient to close the drain valve of the tank truck and the flexible one Completely decouple the filling hose from this and leave it attached to the filling opening 11. The one contained in it Liquid slowly seeps into the reservoir through opening 42a of the inlet valve.

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Since the liquid level in the container drops during the tapping process, the float 21 moves downwards, the roller 27 is the push rod 29 free, which their initial position under the action of their weight and the Resumes spring 52, which in turn causes the crank arm 25 over the push rods 32, move the guide jaw 33, which pushes the tube 38 upwards and moves the inlet valve again to the open position. Here will be the locking balls 45 from the conical section 48, which makes them protrude over the exterior of the Tube 38 and for supporting anew in the locked locked position on the conical bottom of the cup 46 brings. This locks the inlet valve in the open position.

All recognizable in the description and in the drawings The technical details shown are important for the invention.

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Claims (5)

PATENT CLAIMS ^ Se lbs t active overflow limiting device for containers, characterized in that they consist of the following components in the order: One at the inlet of a container to be filled inlet valve (39 »40) which extends in the direction of the outlet closes; a locking device (45, 46, 47) around, in the locked position the valve (59 »40) during the normal filling of the container contents to keep open, whereby the valve (39 »40) automatically through the unlocking of the device (45, 46, 47) closes; and a float (21) disposed in the container and connected to the device (45, 46, 47) for disengaging it when the liquid is in the container reached a certain level. 2. Apparatus according to claim 1, characterized in that the locking device (45, 46, 47) of the valve s consists of retractable balls (45). 3. Device according to claim 1, characterized in that that two push rods (32) arranged on an arm (20) carrying the float (21) a guide jaw (33) move in such a way that, due to the liquid level and consequently the float (21), which is caused by the tapping moved downward by liquid, this guide jaw lifts a valve (38, 40) into the open position. 4. Apparatus according to claim 3 »characterized in that a push rod (29), coaxial with the valve (38, 40) and by the float (21) in the opposite direction 1098 2 2/1329 its action on the push rods (32) actuated, connected to the locking device (45, 46, 47) in this way is that this device (45, 46, 47) is engaged when the float (21) is in its lower position, and is disengaged and the valve (39 »40) releases when the float (21) is in an upper position. 5. Device according to one or more of the preceding claims 1bie 4, characterized in that a small one through hole (42a) is provided in the valve (39, 40) to prevent seeping into the filling line (12) liquid contained above the valve (39 »40) Close the valves »(39, 40) to allow in the container. 109822/1329