EP0899514A2 - Nestable expansion vessel - Google Patents

Abstract

The upper part (12) and the lower part (16) are separated from each other and can be stacked one in the other for transport and storage. At location they can be releasably connected with one another by clamp devices (14). The clamp device is a tension ring, which can be brought to the lock position by a tension lever. The tension ring has a U-shaped leg, provided with axially inwardly directed inclines running one onto the other. The upper and lower parts have radially outwardly directed borders (19,20) on their facing inner edges (25,26).

Description

The invention relates to a pressure compensation vessel for Compensation of pressure fluctuations in liquid circuits, with one of an upper part and a lower part existing container, and one in the container provided membrane that the container interior in a Gas space and a liquid space divided.

In known pressure expansion vessels, which consist of a The upper part and lower part are made, the connection is made the halves of the vessel by a weld, by a non-releasable clamping ring or by an indissoluble offset. The welding process is usually the inner coating is damaged, resulting in a lighter weight Can cause corrosion of the container. Furthermore is the insertion of the membrane through the system connection complex. Disassembly and recycling of the device is also only possible with great effort.

The object of the present invention is a simple Manufactured and recyclable pressure compensation vessel to create that inexpensive until its use can be transported and stored.

The task is solved in that the tops and Bottoms separated from each other and stacked one inside the other are transportable and storable and only for use on site detachable with each other by clamping means are connectable.

It is provided that the clamping means with a Clamping lever can be brought into the closed position the clamping ring has U-shaped legs, those with axially inward, converging Slants are provided, the top and the Lower part of their axially facing inner Edges have radially outward flares and the axially inward facing each other tapered slopes of the clamping ring with axial outward-facing bevels pointing away from each other the flanges can be brought into operative connection.

The clamping ring also has a safety lock that only allows opening at the factory. To can open the top and bottom of each other be separated. The membrane is between the upper part and lower part fastened, preferably clamped. For this purpose, the membrane has one on its radially outer edge Membrane bead on which in the clamping arrangement between Upper part and lower part prevented from slipping inside. The clamp connection makes welding and a possible heat-related destruction or damage a possibly existing corrosion-inhibiting Avoid coating.

Figur 1

den Querschnitt eines Druckausgleichsgefäß in Explosionsdarstellung, mit einem Behälter, der aus einem Oberteil und Unterteil besteht, mit einer zwischen dem Oberteil und dem Unterteil klemmgehaltenen Membran, mit einem Spannring, der einen Sicherheitsverschluß aufweist, mit einem Ventil und mit einem Systemanschluß;

Figur 2

die Detaildarstellung des Ventils in SNAP-IN-Ausführung, gemäß Einzelheit

A" in Figur 1;

Figur 3

die Detaildarstellung des Sicherheitsverschlusses, der den Spannring zusammenzieht, in Schließ- und Geschlossenstellung, gemäß Einzelheit C" in Figur 1;

Figur 4

die Detaildarstellung eines Oberteils und eines Unterteils, die durch einen Spannring erfindungsgemäß verbunden sind, mit zwischen den Spannringen klemmgehaltener Membran, mit einem Membranwulst, gemäß Einzelheit B" in Figur 1;

Figur 5

die Detaildarstellung der Stoßverbindung zwischen dem Oberteil und dem Unterteil, mit hinterkröpftem Spannring, gemäß Einzelheit B" in Figur 1;

Figur 6

die Detaildarstellung zum Transport ineinander gestapelter Unterteile und Oberteile eines Druckausgleichsgefäßes nach der Figur 1.

Further advantageous measures are described in the subclaims. The invention is illustrated in the accompanying drawing and is described in more detail below; it shows:

Figure 1

the cross section of an expansion tank in an exploded view, with a container, which consists of an upper part and a lower part, with a membrane clamped between the upper part and the lower part, with a clamping ring, which has a safety closure, with a valve and with a system connection;

Figure 2

the detailed representation of the valve in SNAP-IN version, according to the detail

A "in Figure 1;

Figure 3

the detailed representation of the safety lock that pulls the clamping ring together, in the closed and closed position, according to the detail C "in Figure 1;

Figure 4

the detailed representation of an upper part and a lower part, which are connected according to the invention by a clamping ring, with a membrane held between the clamping rings, with a membrane bead, according to the detail B "in Figure 1;

Figure 5

the detailed representation of the butt joint between the upper part and the lower part, with an angled clamping ring, according to the detail B "in Figure 1;

Figure 6

the detailed view of the transport of stacked lower parts and upper parts of a pressure compensation vessel according to Figure 1.

The pressure compensation vessel 10 shown in FIG. 1 consists essentially of a container 21 made of an upper part 12 and a lower part 16 assembled is. Between the upper part 12 and the lower part 16 is a membrane 13, preferably a rubber membrane, arranged. The membrane 13 divides the container 21 into a gas space 22 and a liquid space 23. The Liquid space 23 usually contains water and the gas space 22 is an inert gas or air.

The gas can be filled into the gas space 22 via a valve 11 be, as shown in Figure 2. As valve 11 According to the invention, a so-called SNAP-IN valve is provided, as is customary for filling pneumatic vehicle tires is.

The gas is at a predetermined pressure which is above the membrane 13 on the existing in the water chamber 23 Water works. The water space 23 is via a system connection 17 connectable to a heating system 32.

The gas space 22 is in the upper part 12 of the container 21 provided while the liquid space 23 in the lower part 16 is housed. Hence the size of the individual rooms 22 and 23 by the size of the upper part 12 and the lower part 16 determined. By a Change the size of the upper part 12 or the lower part 16 becomes a size determination determined by use of the gas space 22 and the liquid space 23.

As shown in Figure 4, the upper part 12 and Lower part 16 on their mutually facing axially inner Edges 25 and 26 radially outward flares 19 and 20 on. Through the flanges 19 and 20 can the upper part 12 and the lower part 16 by means of a Clamping means 14 are held together as in 3 is shown.

A clamping ring 14 is provided as the clamping means a safety lock 15 is provided. Like the figure 3 shows, the security lock 15 has a Lever 30 on, with which the facing free Ends 31 and 31a of the clamping ring separated at one point 14 moved against each other in a closed position can be. The circumference of the clamping ring 14 can through the security lock 15 known per se reduced and thereby closed.

The safety lock 15 is for this purpose with a lever 30 provided with which the open clamping ring 14 can be shortened can. To shorten the two ends 31 and 31a of the clamping ring 14 first against each other and then pulled over each other. After closing the tension ring 14, the two ends 31 and 31a are tight on top of each other. You will be in this position by the lever 30 held. The lever 30 is in the area of the free end 31a articulated via a linkage 34 with the clamping ring 14 connected and provided with a snap latch 33.

The latch 33 is radial in an articulation 35 articulated to the articulation 34 with the lever 30 connected. In the closed position of the safety lock 15 is the linkage 35 of the snap bolt 33 radially inside to the linkage 34 of the lever 30. The Safety lock 15 is so by the spring tension the clamping ring 14 held in its closed position.

To secure the closed position, the lever 30 with - not shown - securing means, for example a cotter pin or a safety wire, connected to the clamping ring 14 and so in its position being held. This backup can be done at the same time be sealed to prevent any manipulation to a large extent to avoid and if necessary to be able to prove.

The assembly of the pressure compensation vessels 10 is thereby much simplified and can be done by little trained Personnel.

As FIG. 5 shows, the clamping ring 14 has legs 27 and 27a with a U-shaped cross section. With the U-shaped legs 27 and 27a are the two Flares 19 and 20 of the upper part 12 and the lower part 16 encompassed. The angle of inclination 24 of the U-legs 27 and 27a is slightly larger than the outside angle α than 270 °. The pressure compensation vessel 10 is with the Clamping ring 14 is kept closed according to the invention.

The membrane 13 is radially outside with a membrane bead 18 provided, which is located outside of the container 21. With the membrane bead 18, the membrane 13 of the edges 25 and 26 between the upper part 12 and the Lower part 16 kept clamped.

The legs 27 and 27a of the clamping ring 14 are V-shaped axially inward, converging Provide slopes 29 and 29a. The axially inward directed bevels 29 and 29a correspond to the axially outward, pointing away from each other Slants 28 and 28a of the flanges 19 and 20. Are the slopes 29 and 29a of the clamping ring 14 with the bevels 28 and 28a of the flanges 19 and 20 in Active connection, so they can be radial to each other slide inside.

The edges 25 and 26 of the upper part 12 and the lower part 16 are under a predetermined form held against each other. The legs 27 and 27a converge in a V-shape. When shortening the tension ring 14, as shown in Figure 3, the Flares 19 and 20 and thus the upper part 12 and that Lower part 16 pressed against one another in a pressure-tight manner.

By this arrangement of the membrane bead 18 between the edges 25 and 26, the membrane 13 seals the container 21 from. Form the upper part 12 and the lower part 16 thereby a gas and watertight room.

To prevent the edge areas of the membrane from slipping inwards 13 to prevent in the container 12, the membrane 13th provided with the membrane bead 18. The membrane bead 18 preferably runs radially around the edge of the Membrane 13. The membrane bead 18 is clamped by the held radially outward flares 19 and 20. The membrane bead 18 is thus outside the Inside of the container.

The pre-pressure of the clamping ring 14 causes the membrane bead 18 tight and tight between the edges 25 and 26 trapped. Likewise, the upper part 12 and the lower part 16 held firmly against each other. Through this Bracket becomes such a high pressure during assembly applied that the container 21 in the operating state cannot be opened.

As stated above, for filling the gas space 22 a valve 11 is provided in the area of the upper part 12, as shown in detail in Figure 2. This Valve 11 is preferably a known SNAP-IN valve in solid rubber design. The gas space 22 is through this Valve 11 with an inert gas, preferably with Nitrogen, filled. The gas can be under one predetermined pressure.

To compensate for the pressure in a not shown Heating system 32, this is through a system connection 17 with the liquid space 23 of the container 21 connected. The system connection 17 is in the lower part 16 designed and has - not shown - Means for fastening pipes.

To avoid corrosion, the upper part 12 and Lower part 16 coated from the inside and outside. The container 21 is for use in smaller systems determines and has a capacity of preferably up to 70 liters of water.

As Figure 6 shows, a variety of tops 12 and lower parts 16 for transport and / or Storage can be stacked one inside the other. That for transportation required transport volume can be considerable be reduced. At the same time be at the place of assembly Labor capacity needed - in particular for production intended for developing countries - for Reduce overall costs. For assembly the pressure vessels 10 need no personnel Welder training more, reducing personnel costs can be significantly reduced.

Reference numerals

10th

Pressure compensation vessel

11

Valve

12th

Top

13

membrane

14

Tension ring

15

Safety lock

16

Lower part

17th

System connection

18th

Membrane bead

19, 20

Flaring

21

container

22

Gas space

23

Fluid space

24th

Angle of inclination

25, 26

edge

27, 27a

U-leg

28, 28a

Flare

29, 29a

Tension ring slope

30th

lever

31, 31a

free end

32

Heating system

33

Snap latch

34, 35

Articulation

Claims (9)

Pressure compensation vessel to compensate for pressure fluctuations in fluid circuits, with one out a container consisting of an upper part and a lower part, and a membrane provided in the container, which the container interior into a gas space and one Liquid space divided, characterized in that the upper parts (12) and lower parts (16) from each other can be transported and stored separately and stacked one inside the other and only before use Can be releasably connected to one another by clamping means (14) are. Pressure compensation vessel according to claim 1, characterized in that the clamping means one with a tension lever (30) Clamping ring that can be brought into the closed position (14), the clamping ring (14) U-shaped legs (27, 27a) which has axially inwardly directed tapered slopes (29, 29a) are, the upper part (12) and the lower part (16) on their axially facing inner edges (25, 26) radially outward flares (19, 20) have and the axially inward facing each other tapered slopes (29, 29a) of the clamping ring (14) with axially outward facing one another groundbreaking bevels (28, 28a) of the flanges (19, 20) can be brought into operative connection. Pressure compensation vessel according to claims 1 and 2, characterized in that the clamping ring (14) a Has safety lock (15) and the upper part (12) and the lower part (16) when tensioning the clamping ring (14) are movable against each other. Pressure compensation vessel according to claims 1 to 3, characterized in that the membrane (13) with a Membrane bead (18) is provided, the membrane bead (18) at the radially outer edge of the membrane (13) and the membrane (13) with the membrane bead (18) between the upper part (12) and lower part (16) kept clamped is. Pressure compensation vessel according to claims 1 to 4, characterized in that the lower part (16) has a the entry of liquid into the liquid space (23) enabling system connection (17). Pressure compensation vessel according to claims 1 to 5, characterized in that the upper part (12) a Filling the gas space (22) with a compressed gas Has valve (11), the valve (11) is a SNAP-IN valve. Pressure compensation vessel according to claims 1 to 6, characterized in that the container (21) a Small containers with a capacity of up to 70 Liters of water. Pressure compensation vessel according to claims 1 to 17 characterized in that the upper part (12) and the Lower part (16) anti-corrosion inside and out are coated. Pressure compensation vessel according to claims 1 to 8, characterized in that a variety of tops (12) and a plurality of lower parts (16) separately stacked one inside the other can be transported and stored.

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