DE1042323B - Shut-off device with receiving chamber for the locking piece or pieces - Google Patents

Description

In the case of certain types of closures for water supply pipes, the closure pieces are used to shut off of the water pipe from a chamber into the flow cross-section and when the closure is opened conversely from the flow cross-section moved into this chamber. Such closures are z. B. Gate valve, but especially the closures for shutter, which have become known as a shutter Water ducts, in which several shutter diaphragms in the manner of iris diaphragms in the flow cross-section be swiveled in.

In such closures, the chamber is in which the closure pieces when the closure is opened are moved, via more or less tightly closing gap reduction devices the flow space of the water pipe in connection and is accordingly subject to the same Pressure conditions such as the water pipe at the point in question.

The housing of the chamber must therefore in terms of strength for the pressure conditions as they are in the water pipe rule, be trained. Just before the closure can, however, at Closing the same by delaying the amount of water flowing in the water pipe, significant increases in pressure occur above the pressure normally prevailing in the water pipe, for which the housing of the chamber must be dimensioned. This is unnecessary when a device is arranged according to the invention.

Furthermore, for control reasons, it may also be desirable to have one in the chamber to have different pressure than in the water pipe. So it is z. B. useful when opening the Closure to connect the interior of the chamber with a space of low pressure or the free atmosphere, so that it was displaced by the locking piece when the locking piece was moved into the chamber Water can drain away.

In order to carry out the closing process, it is again useful to control the pressure in the chamber to increase in order to the closure piece, its immersed in the chamber, perpendicular to the direction of movement running surface here acts as a piston to convey a pressure in the closing direction.

The shut-off device designed according to the invention fulfills these multiple tasks with am Housing provided, with the flow line in connection standing chamber for receiving the or the closure pieces in the open state of the shut-off device in that to control the Pressure in the chamber, the chamber with a line higher and a line lower pressure than that of the medium to be shut off is connected and shut-off device with receiving chamber for the locking piece or pieces

Applicant:

Arno Fischer,

Walsheim / Saar, main street

Arno Fischer .. Walsheim / Saar, has been named as the inventor

the lines can be locked alternately by one flap each, with the flaps for both flaps simultaneously movable stops cooperate, each one of the two flaps in the closed position hold while the other flap can take its open position.

The essence of the invention will be further explained with reference to the drawing.

Fig. 1 shows the view of a diaphragm shutter in which several shutter diaphragms in the manner of Iris diaphragms are pivoted into the flow cross section of the flow tube;

Fig. 2 shows a horizontal axial section through the shutter of Fig. 1.

In the drawing, 1 denotes the water pipe with the flow cross-section 2. On the circumference of the water pipe, six closure screens 3 are rotatably mounted on bolts 4 arranged parallel to the axis of the flow pipe. When the shutter is closed, the diaphragms assume the position 5 shown in dashed lines. To open the shutter, the diaphragms 3 are pivoted into the chamber 6. At the points 7, the chamber 6 is connected to the flow space of the water guide pipe 1 via more or less tightly closing, gap reducing devices (not shown). The chamber 6 would thereby without the apparatus of the invention are subject to the same pressure conditions as the inside of the W ^T asserführungsrohres.

To prevent this from happening, the device designed according to the invention is attached to the water pipe 8 connected. This consists of a housing in which two flaps 9 and 10 are pivotably mounted and serve to shut off or open two lines 11 and 12 opening into the housing, of which z. B. the pipe 11 to a room with low pressure, the pipe 12 to a room higher pressure is connected. In the case

809 661/163

a shaft 14 is also mounted on which there are stops 13, 15 which interact with the flaps 9, 10. In the position of the stops 13, as shown in Fig. 2, the flaps 9 and 10 can pivot away from each other in the direction of the lines 11, 12. Since the flap 9 can move against the low pressure in the line 11, the pressure in the interior of the chamber 6 can only assume a value that is slightly above the pressure in the line 11. The higher pressure in the line 12 cannot take effect in the interior of the chamber 6 because it presses the flap 10 against the stop 13 and the passage through the flap 10 is thus blocked. Since the arrangement of the parts is symmetrical, it does not matter which line has the higher pressure and which line has the lower pressure.

Is opened when the shutter is opened by the Chamber 6 pivoting diaphragms 3 the pressure of the chamber is higher, so it flows through the diaphragms 3 displaced water through the passage of the flap 9 in the line 11 from low pressure. The bezels 3 therefore only need to be moved against the low pressure in the line 11.

If pressure is to be exerted on the diaphragms to close the shut-off device, the The shaft 14 is rotated by means of the lever 16 until the stops 15 are in the pivoting path of the flaps 9 and 10 come, which can now only pivot towards each other. This can increase the pressure in the line 12 become effective inside the chamber, since the flap 9 is now opposite the line 11 with low pressure is held in the closed position. The higher pressure in the chamber 6 is exerted here the diaphragms 3, the surface 17 of which runs perpendicular to the direction of movement acts as a piston, a pressure in the closing direction.

In this way, the device 8 can serve as a control device for the closure pieces, wherein the Control takes place in the simplest way by actuating the lever 16.

If the closure is used together with a centrifugal machine, for example a water turbine, so the line 11 for low pressure can be connected to the underwater, for example, the line 12 for higher pressure, however, to the headwater. In the case of tidal power plants, the headwater is in the rhythm of the tides to the underwater and the underwater to the upper water. It is in According to the invention that the flaps 9 and 10 alternately as flaps in such cases for the pressure limitation or for the control!

While in the illustration according to Fig. 1 and 2

the housing for the device according to the invention is part of the correspondingly designed chamber 6 is, according to Fig. 3, a special housing for the flaps with stops and connections for the Lines 11, 12 are arranged outside the chamber 6 and connected to this by means of the pipeline 18.

ίο The latter training and arrangement also points special advantages in terms of production.

Claims (4)

Patent claims: 1. Shut-off device with provided on the housing, in connection with the flow line standing chamber for receiving the locking piece (s) when the shut-off device is open, characterized in that ao to control the pressure in the chamber (6) the chamber with a line (12) higher and a line (11) lower pressure than that of the medium to be shut off is connected and the Lines (11,12) each through a flap (9,10) are alternately lockable, the flaps (9, 10) being movable for both flaps at the same time Stops (13, 15) cooperate, each one of the two flaps in the closed position hold while the other flap can take its open position. 2. Shut-off device according to claim 1, characterized in that part of the chamber (6) is designed as a housing for accommodating the flaps, contact and lines (11, 12). 3. Shut-off device according to claim 1, characterized in that the flaps with the Stops and connections for the lines (11, 12) are arranged in a special housing are, which is arranged outside the chamber (6) and connected to this. 4. Shut-off device according to claim i, 2 or 3, characterized in that the controllable Stops (13, 15) of stop cams offset from one another at an angle about a shaft (14), -Thumbs or the like. Are formed by turning the shaft in the flap path are pivotable. Considered publications:
German patent specification No. 878 879. 1 sheet of drawings