DE2309122A1 - SAFETY VALVE WITH QUICK RELEASE - Google Patents

Description

DR. MÜLLER-BORE DIPL-ΡΗΥε. JfV MANITZ DIPL.-OHEM. DR. DEUFEL DIPL-ING. FINSTERWALD DIPL.-ING. GRÄMKOW

Munich, February 23. E 1105 - Erb

ETABLISSEMENOiS DOYER S.A.

207 vol. Voltaire

Paris 75011, France

Safety valve with quick release

The invention relates to a safety valve with a seat and a closure member, the one Closed position, in which it is pressed against the seat, and an open position in which it is held by this Seat is removed, with a spring of this closure member to one of these two positions, called Safety position, pushes, and the other position is the normal operating position.

The invention relates to such a valve, which is designed so that it is in urgent cases directly from the operating position to the safety

309835/0557

Dr. Müller-Bore Dr. Manitz Dr. Deufel Dlpl.-Ing. Finsterwald Dlpl.-Ing. Qramkov Braunschweig, Am Burgerpark 8 8 Munich 22. Robert-Koeh-StraSe 1 7 Stuttgart-Bad Cannstatt, MarktatraBe 3 Telephone (0531) 73M7 Telephone (0811) 283845. Telex 5-22050 mbpat Telephone (0711) 587261 Bwik: Central Cash Office Bayer. Volksbanken. Munich. Account no. 9822 Postal check: Munich «4M

position passes.

The valve according to the invention is characterized by first devices connected to the closure member cooperate so that they bring it against the action of the spring in the operating position, and out of service can be set, and by second devices, which consist of a retractable retaining latch and to the Place of the first devices can occur to the valve after putting the first devices out of operation to hold the operating position, whereby the bolt can be disengaged immediately in urgent cases, to cause the closure member to move into the safety position directly under the action of the spring.

The first devices preferably have an actuating attachment connected to the closure member; a fixed hat surrounds the actuating attachment and is in turn surrounded by an axially movable hat, while the retaining bar has balls that sit in the fixed attachment and alternate on the one hand with the annular groove of the actuator attachment for locking this actuator attachment and on the other hand, cooperate with an annular groove of the movable hat for unlocking this actuating attachment.

In one embodiment, the movable hat is returned to a position by a spring in which its groove is offset against the balls, and by acting on this movable hat counter to that caused by this Spring offered resistance is brought the groove of the movable hat in front of the balls, so that these the Can leave the groove of the actuator to cause the immediate arrival of the valve in the safety position.

309835/0557

In the following, an embodiment of the invention is described as an example, with reference to the enclosed Reference is made to the drawing. Show it:

1 shows an overall view of the safety valve with the actuating attachment in the closed position and the closure member pressed against the seat.

Fig. 2 is an enlarged view of the retaining latch in this position.

3 shows a representation corresponding to FIG. 2, on which the retention latch is in a different position.

In FIG. 1, the valve consists of a gas tap, which has a fixed body 10 and a seat 11. This Hph « is, for example, a safety isolating valve, but it can also be used for other purposes.

A closure member 14 cooperates with the seat 11, which is carried by an actuation attachment 15, which is rotatably mounted between a closed position (Fig. 1) and an open position, which is offset from the previous position by 90 °. The unit 14-, 15 is in the closed position by a spring 16 pressed, in which the closure member 14 rests on the seat 11 The body 10 of the tap has ramps 17 * on which, under the action of the spring 16, follower rollers 18 rest, which are carried by the actuating attachment 15, so that the unit 14, 15 de after the position of the attachment 15 "i.e. the rollers 18 opposite the ramps 17, can be moved down by the spring 16, so that the closure member 14 is pressed against the seat 11, or is held raised against the action of the spring 16,

- 4 309835/0557

so that the closure member 14 is removed from the seat 11.

The body 10 is covered with a fixed hat that surrounds the actuating attachment 15 and on its upper end has an opening 20 for inserting an actuating key 21.

The end 24 of the key is flattened and widened and the opening 20 is elongated so that the End 24 always only with the same orientation in the hole

20 can be introduced. The end 24 cooperates with a recess 25, for example with a cutout, which is provided in the upper end of the actuator attachment. This recess also has one elongated cross-section so that the end 224 of the key

21 can only enter this recess 25 with a precisely defined orientation.

The fixed hat 19 has three holes

30 (Fig.2) at angles of 120 °, in which three balls

31 sitting.

The fixed hat 19 is surrounded by an axially movable hat 32, which by a spring 33 after is printed up until it stops at a locking ring 34 comes.

The balls 31 work alternately on the one hand with an annular groove 35 of the actuating attachment for locking this actuating attachment 15 and on the other hand with an annular groove 36 of the movable Hat 32 for unlocking the actuator attachment 15 together.

309835/0557

The unit 31, 32, 33, 34, 35, 36 according to the invention forms a locking device.

In the position of FIGS. 1 and 2, the actuator takes up at ζ 15 the so-called closed position, in which the recess 25 with the opening 20 of the fixed hat 19 coincides. The rollers 18 are here in the lower part of the ramps 17 and the unit 14, 15 is pressed against the seat 11 by the spring 16 in the closed position. In this position, the groove 35 is against the Balls 31 offset, while the groove 36 is arranged opposite the balls 31 and receives them, whereby the Hat 32 in the counter to the action of the spring 33 moved down Position is held.

The end 24 of the key is used to open the tap 21 is inserted into the in-line openings 20 and 25 and the key 21 is rotated through 90 °. Through this the rollers 18 are moved up to the upper part of the ramps 17, whereby the unit 14, 15 is lifted axially and removed from the seat 11.

The groove 35 reaches the level of the balls 31 and these enter the groove 35 (Figure 3), the wodnech movable hat 32 is released, which is now through the Spring 33 is moved until it stops at the locking ring 34 comes. The tap is now regardless of whether the rollers 18 are on the ramps 17 in the upper or lower Position, held open.

In the position shown in FIG. 3, the openings 25 and 20 are at an angle of 90 ° to one another arranged so that the key 21 cannot be pulled out. To be able to pull it out, the

- 6 309835/0557

Actuating attachment 15 can be rotated 90 ° until the Directions of the openings 20 and 25 coincide. Here the tap remains open because the balls 31 are in the groove 35 and keep the unit 14, 15 away from the seat 11.

If necessary, it is sufficient to push in the movable hat 32 to move it from the upper position in to bring the lower position in which the balls 31 can enter the groove 36, whereby the actuation Set 15 is released immediately and the unit 14, 15 under the action of the spring 16 immediately can move axially downwards until it rests in the closed position.

The locking device according to the invention thus has an extremely simple structure and is very easy to use.

The bolt can instead of the balls 3t a pin, a pusher, etc. own or can have an organ made of a fusible material to automatically with to provide security in the event of a rise in temperature. Furthermore, the rectilinear movement of the hat 32 between the operating position and the safety position can be used to close or open an electrical circuit, with either lamellar contacts, which are connected to the fixed and the movable part of the valve via insulating elements firmly connected, or any other device such as a photoelectric cell, a proximity sensor etc., can be used. The contact elements can also be located outside the area in which the valve is located (e.g. separated by a housing), and can move under the action of magnets,

- 7 - 309835/0557

which are firmly connected to the fixed and movable part outside the housing. In this way, the transition from the operating position to the safety position can either be with a direct interruption of the
Electric current that feeds pumps, burners, etc., or can be combined with an alarm or power interruption via a relay, etc.

In the foregoing, the operating position was normal open position and the safety position the normally closed position. However, the invention is also applicable if the operating position is the normally closed position and the safety position is the normally open position.

The invention is also applicable not only to gas taps, but also to liquid taps, etc. applicable.

In the exemplary embodiment described and illustrated above, the tap is a two-way tap. However, the invention is also applicable when the tap
owns three or more veges.

309835/0557

Claims (7)

Claims rl .J safety valve with a seat and a closure member, which has a closed position in which it is pressed against the seat, and an open position in which it is removed from this seat, a spring called this closure member in one of these two positions Safety position, pushes, and the other position is the operating position, characterized by first devices that cooperate with the closure member to bring it into the operating position against the action of the spring, and can be put out of operation, and by second devices that consist of a Retractable retaining latches exist and can take the place of the first devices in order to keep the valve in the operating position after the first devices have been put out of operation, wherein the bolt can be disengaged immediately in urgent cases to cause the closure member under the action of the spring comes directly into the safety position. 2. Safety valve according to claim 1, characterized in that the first Facilities have an actuating attachment connected to the closure member. 3. Safety valve according to claim 2, characterized in that a fixed Hat surrounds the actuating attachment and is in turn surrounded by an axially movable hat, while 309835/0557 the retaining bar has balls that sit in the fixed attachment and alternate with one hand the annular groove of the actuator attachment for locking this actuator attachment and on the other hand cooperate with an annular groove of the movable hat for unlocking this actuating attachment. 4. Safety valve according to claim 3 »characterized in that the movable Hat is brought back by a spring in a position in which its groove is offset against the balls, and that the groove of the movable hat by acting on this movable hat contrary to that offered by this spring Resistance is brought in front of the balls so that they can leave the groove of the actuator attachment and thereby cause the valve to move directly into the safety position. 5. Safety valve according to one of claims 1 to 4, characterized in that the operating position is the open position and the safety position the closed position is. 6. Safety valve according to claim 3, characterized in that the actuating attachment between a first position, normally corresponding to the safety position, and a second, is normally mounted rotatably corresponding to the operating position, the bolt being the locking member retains in the operating position while the attachment is returning from the second position to the first position can, so that moving the bolt away the immediate - 10 - 309835/0557 causes the transition to the safety position under the action of the spring. 7. Safety valve according to claim 6, characterized by a key for actuating the actuating attachment, which has a flattened and elongated end that has a corresponding, The opening provided in the fixed hat with the same shape can only pass through when the actuation opening at ζ takes the first position. 309835/0557