DE202012002611U1 - Valve device for opening and closing an opening of a channel - Google Patents

Abstract

Flap device (1) for opening and closing an opening (16) of a channel (54), in particular a fluid channel of a power plant, with a frame (2) which has a frame opening (7) and a flap element (3) which is pivotable on the The frame (2) is arranged and can be pivoted between a closed position in which the frame opening (7) is closed and an open position in which the frame opening (7) is open, the flap device (1) being a locking device (8 ) for locking the flap element (3) in the closed position and wherein the locking device (3) can be unlocked by itself and / or by means of an actuating device (9).

Description

FIELD OF THE INVENTION

The present invention relates to a flap device for opening and closing an opening of a channel, in particular a fluid channel with a liquid and / or a gas as fluid. The flap device serves as a flooding flap, bursting flap and / or ventilation flap in facilities, especially power plants such. B. nuclear power plants.

TECHNICAL BACKGROUND

Nuclear power plants generally have a water channel system. In case of failure, it may be necessary to open the water channel system at one point and drain water from the channel system specifically, for example, to prevent flooding of the channel system.

SUMMARY OF THE INVENTION

Against this background, the present invention has for its object to provide a flap device which can open and close an opening of a channel, wherein the flap device can be opened for targeted discharge of a fluid, such as a liquid or a gas from the channel.

According to the invention this object is achieved by a flap device with the features of claim 1.

Accordingly, it is provided:
A flap device for opening and closing an opening of a channel, in particular a fluid channel of a power plant, the flap device having a frame with a frame opening and a flap element which is pivotally mounted on the frame and between a closed position in which the frame opening is closed, and an open position in which the frame opening is opened, is pivotable, wherein the flap device has a locking device for locking the flap element in the closed position and wherein the locking device is designed to be unlocked by automatically or by itself and / or by means of an actuating device ,

Advantageous embodiments and further developments will become apparent from the other dependent claims and from the description with reference to the figures of the drawing.

CONTENT OF THE DRAWING

The present invention will be explained in more detail with reference to the exemplary embodiments indicated in the schematic figures of the drawings. It shows:

1 a perspective view of a first embodiment of the flap device according to the invention;

2 a front view of the flap device according to 1 ;

3 a sectional view of the flap device according to the 1 and 2 wherein the flapper device is closed;

4 the sectional view of the flap device according to the 3 wherein the flapper device is opened;

5 a perspective view of a second embodiment of the flap device according to the invention;

6 a rear view of the flap device according to 5 ;

7 a sectional view of the flap device according to the 5 and 6 wherein the flapper device is closed;

8th a sectional view of the flap device according to 7 wherein the flapper device is opened;

9 a perspective view of a third embodiment of the flap device according to the invention;

10 a rear view of the flap device according to 9 ;

11 a sectional view of the flap device according to the 9 and 10 wherein the flapper device is closed;

12 a sectional view of the flap device according to 11 wherein the flapper device is opened;

13 a sectional view of a section of a flap device according to a fourth embodiment of the invention;

14 a sectional view of a section of a flap device according to a fifth embodiment of the invention;

15 a perspective view of the flap device according to 14 wherein the flapper device is closed;

16 the perspective view of the flap device according to 15 wherein the flapper device is opened;

17 a sectional view of the flap device according to 13 wherein the flapper device is closed;

18 the sectional view of the flap device according to 17 wherein the flapper device is opened;

19 a sectional view of a section of a flap device according to a sixth embodiment of the invention;

20 a perspective view of the flap device according to 19 wherein the flapper device is opened;

21 a front view of the flap device according to 19 and 20 wherein the flapper device is closed;

22 a sectional view of the flap device according to 21 wherein the flapper device is closed;

23 the sectional view of the flap device according to 22 wherein the flapper device is opened;

24 a perspective view of a flap device according to a seventh embodiment of the invention, wherein the flap device is closed;

25 a rear view of the flap device according to 24 ;

26 a sectional view of the flap device according to the 24 and 25 wherein the flapper device is closed; and

27 the sectional view of the flap device according to 26 wherein the flapper device is opened.

The accompanying drawings are intended to provide further understanding of embodiments of the invention. They illustrate embodiments and, together with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the stated advantages will become apparent with reference to the drawings. The elements of the drawings are not necessarily shown to scale to each other.

In the figures of the drawing are the same, functionally identical and same-acting elements, features and components - unless otherwise stated - each provided with the same reference numerals.

DESCRIPTION OF EMBODIMENTS

In 1 is a perspective view of a flap device 1 shown according to a first embodiment of the invention. The flap device 1 is shown by its outside or front side.

The flap device 1 , as further below with reference to the 2 - 27 In this case, for example, it serves as a flooding flap, which can be used in facilities, in particular power plants (eg nuclear power plants). The flap device 1 For example, can be used in a waterway system of a nuclear power plant to z. B. to open a waterway of the channel system in a major accident and to allow a controlled flow of water. Likewise, the flap device 1 Also additionally or alternatively be used as a ventilation and / or bursting flap, which opens in case of overpressure.

The flap device 1 has a frame 2 on, which in a corresponding through the flap device 1 to be closed opening, z. B. a water channel of a nuclear power plant, can be installed or fastened, as in the following 3 and 4 is shown. At the frame 2 is a flap element 3 by means of a hinge device 4 , z. B. at least one hinge or band 5 to a pivot axis 6 pivotally mounted for opening and closing the frame opening 7 ,

Furthermore, a locking device 8th provided for locking the flap element 3 in the closed position. The locking device 8th can, as in the 1 - 27 shown is automatically or self-unlocked, z. B. when a predetermined threshold is reached, and / or by an actuator 9 for actuating or unlocking the locking device 8th ,

The locking device 8th points in the in 1 embodiment shown at least one magnet 10 and a magnetic counterpart 11 on which by the magnet 10 is attracted. The magnet 10 is z. B. on the flap element 3 and the magnetic counterpart 11 opposite to the frame 2 provided as in the embodiment in 1 is shown, or vice versa (not shown). The magnet 10 can be designed here as a permanent magnet or electromagnet.

In the in 1 the embodiment shown is the flap element 3 formed on its lower side pivotable outwards and with two bands 5 provided while a magnet 10 or its magnetic counterpart 11 on both (ie right and left sides) of the flap element 3 or frame 2 are provided. Likewise, additionally or alternatively, at least one magnet and its magnetic counterpart can also be provided on the upper side of the flap element.

As in the embodiment in 1 is shown is the magnet 10 optionally additionally adjustable. The magnet 10 is in this case for example parallel or in a transverse direction to the frame 2 formed displaceable or adjustable. This is the magnet 10 in an associated magnet holder 12 recorded, which z. B. in a slot 13 or groove of the flap element or a flap holder attached to the flap element 14 slidably received. The magnet holder 12 with the magnet 10 is in the slot 13 or the groove in a respective defined or predetermined position can be fixed, for. B. clamped and / or festschraubbar, etc., formed. That way, the magnet can 10 opposite the magnetic counterpart 11 which is attached to the frame 2 is attached, can be arranged. The magnetic counterpart 11 , as in the embodiment in 1 is shown, for example, also in a holder 15 be received, which on the frame solvable, z. B. by screwing, pinning, or insoluble, z. B. by welding, soldering, riveting, gluing, etc., is attached. The magnetic counterpart 11 with his holder 15 can optionally also be moved z. B. on the frame 2 be provided and in a predetermined position on the frame 2 be fixable.

In 2 is the outside or front of the flap device 1 according to 1 shown. The flap element 3 is in 2 shown in the closed position in which it is the frame opening 7 completely closes. To open, the connection between the magnet 10 and its magnetic counterpart 11 released or unlocked and the flap element 3 to his two bands 5 swung outward out of the picture plane. This will cause the frame opening 7 released, so that, for example, on the inside or back of the flap device 1 water can pass through. As before with reference to 1 described, the magnet holder 12 with the magnet 10 along the slot 13 in the flap element 2 or its flap holder 14 be moved so far that he opposite the magnetic counterpart 11 lies to attraction and connection of magnet 10 and magnetic counterpart 11 for locking the flap element 3 in the closed position.

Furthermore, the magnet forms 10 with its magnetic counterpart 11 a lever arm about the pivot axis 6 the flap element 3 , The lever arm is defined by the position or the distance of the magnet 10 and the magnetic counterpart 11 from the pivot axis 6 the flap element 3 , This can cause the connection of the magnet 10 and its magnetic counterpart 11 For example, be solved automatically when a water level on the inside or back of the flap element 3 has reached a sufficient level or a predetermined level and thus unlocking pressure threshold, so that the water pressure is sufficient, the flap element 3 imprint and the magnet's magnetism 10 on his magnetic counterpart 11 to overcome.

The unlocking pressure threshold value for achieving a water pressure on the flap element which is greater than the attraction force of the magnet, and thus for pressing the flap element 3 is by the magnetic force of the magnet 10 and / or the lever arm of the magnet 10 to the pivot axis 6 adjustable.

In 3 is a side view of the flap device 1 according to the 1 and 2 shown, wherein the flap element 3 locked in the closed position. The flap device 1 is in an installed position, for example in an opening 16 a water channel 54 of a nuclear power plant, shown.

The representation in 3 and later 4 is here schematically and greatly simplified. On details of the attachment of the frame 2 in the opening 16 of the canal 54 was omitted for reasons of clarity. In principle, the flap device 1 and their framework 2 by means of any attachment or combination of fasteners in an opening 16 a channel 54 be attached, which is suitable, the flap device 1 to fix it in, so that they are not unintentionally in the opening, for example 16 move, move or even solve. The channel can do this 54 be formed completely closed, or be formed open at its top. In the embodiment in the 2 and 3 For example, the channel is completely closed. However, it could also be designed to be open at the top. In this case, the flap device 1 be used to prevent unwanted flooding of the channel and instead before the Open flap element for draining a fluid, eg. As water, from the channel. This applies to all embodiments of the invention and in particular in the 1 - 27 shown embodiments.

As in the embodiment in 3 is shown, the flap element 3 optionally an additional sealing device 17 on, leaving the flap element 3 the opening 7 of the frame 2 tight, for example, liquid-tight and / or gas-tight closes. The sealing device 17 is in the embodiment in 3 for example, a rubber seal 18 , which circumferentially on the flap element 3 is mounted and in the closed position of the flap element 3 tight, z. B. liquid-tight and / or gas-tight, on the opposite frame 2 is pressed for sealing the frame opening 7 , Likewise, a sealing device 17 additionally or alternatively on the frame 2 be provided. Instead of a rubber seal 18 It is also possible to provide any other seal or combination of seals which is suitable for the frame opening 7 seal. This applies to all embodiments of the invention and in particular in the 1 - 27 shown embodiments.

As in 3 is shown is the magnet holder 12 with his magnet 10 in the slot 13 the flap element 3 or its flap holder 14 pushed into a position and fixed in this position, in which the magnet 10 the magnetic counterpart 11 opposite. Alternatively or additionally, the magnetic counterpart can also 11 and its holder 15 be designed slidably, so that the lever arm of the magnet 10 and its magnetic counterpart 11 can be adjusted by adjusting its distance to the pivot axis 6 the flap element 3 ,

Furthermore, in 4 a side view of the flap device 1 according to the 1 to 3 shown, wherein the flap element 3 unlocked and pivoted in a partially open position. The magnet 10 is unlocked and thus the flap element 3 released for pivoting in the open position.

Here, the magnet 10 , For example, a permanent magnet, are unlocked by z. For example, an unlock pressure threshold for a gas pressure or water level on the inside or back of the flap member is reached which is sufficiently high so that the gas or liquid is the force of attraction of the magnet 10 on his magnetic counterpart 11 exceeds and so the magnet 10 from the connection with its magnetic counterpart 11 solves. In this case, an additional actuating device for unlocking the locking device 8th be omitted, since the unlocking is done automatically due to the achievement of a pressure threshold for a liquid level and thus corresponding fluid pressure or a gas pressure.

Likewise, the magnet 10 , For example, an electromagnet, also by means of an actuator 9 be controlled or regulated so that he connects to his magnetic counterpart 11 releases when a certain condition is met, e.g. B. a predetermined threshold level for a liquid level or a predetermined threshold value for a gas pressure on the inside or back of the flap device. As an actuating device 9 Here, for example, an electrical control or regulating device 55 be provided with the magnet 10 via a cable line 56 is connected, as in 4 is indicated by a dashed line. By means of the control or regulating device 55 can the magnet 10 be energized according to electromagnet, for locking and / or unlocking the flap element 3 ,

In 5 is a perspective view of a flap device 1 according to a second embodiment of the invention. 6 shows the inside or rear view of the flap device 1 according to 5 ,

The flap device 1 According to the second embodiment, this essentially corresponds to the flap device 1 according to the first embodiment, so that reference is made to the description of the first embodiment, in order to avoid unnecessary repetition.

The locking device 8th the flap device 1 According to the second embodiment, in contrast to the first embodiment, a locking device instead of a magnet 1 with at least one pin element 19 as a locking element 20 on, which with a locking element receptacle 21 can be brought into and out of engagement for locking and unlocking the locking element 20 , The locking element 20 is in the in the 5 and 6 shown embodiment of the flap element 3 provided while the locking element receptacle 21 on the frame 2 is arranged. A reverse arrangement of locking element and locking element receptacle is also possible.

For holding or locking the flap element 3 in its closed position, the locking element 20 in the locking element holder 21 taken up or engaged with this. The locking element 20 is in the process of being in 5 and 6 shown embodiment with a spring element 22 , z. B. a compression spring coupled to the locking element 20 in the locked Biased position. To unlock the locking element 20 and thus unlocking the flap element 3 becomes the locking element 20 from the locking element holder 21 moved out or out of engagement with this. In this case, the locking element 20 in the 5 and 6 shown embodiment against the spring force of the compression spring 22 emotional. By unlocking the locking element 20 and thus the unlocking of the flap element 3 this can be moved from its closed to an open position, in which the opening 7 of the frame 2 is released. One on the inside or back of the flap element 3 fluid, such as a liquid and / or a gas, can thus pass through the frame opening 7 pass.

The locking element 20 is displaceable on the flap element 3 appropriate. For this purpose, the flap element 3 for example, a holder 23 on, as in the embodiment in 5 and 6 is illustrated. The holder 23 has an opening portion 24 in which the locking element 20 slidably received. The opening section 24 is formed as an opening through which a first end of the locking element 20 passed through. The opening may optionally be additionally provided with a guide (not shown) for guiding the locking element 20 when it is moved between the locking position and the unlocking position. A second end of the locking element 20 is formed with the locking element receptacle 21 to be engaged or received therein. Furthermore, the locking element 20 a paragraph 25 on, wherein the spring element 22 between the paragraph 25 and the holder 23 is arranged.

For actuating the locking element 20 is the first end, for example, with a Bowden cable 26 as part of an actuator 9 connected. The Bowden cable 26 is in the in 5 and 6 illustrated embodiment of at least one float 27 in a float box 28 operable, as in the following 7 and 8th is shown. Instead of an actuator 9 which a Bowden cable 26 and a swimmer 27 and a float box 28 can also be provided any other actuating device which is suitable, the locking element 20 to move into its unlocked position, in which it is out of engagement with the locking element receptacle 21 is.

In 7 is the locking device 8th according to the 5 and 6 shown in the locking position, in which the locking element 20 in engagement with the locking element receptacle 21 and the flap element 3 thereby locked or fixed in the closed position. This biases the spring element 22 , here a compression spring, the locking element 20 against the locking element holder 21 in front. The one with the Bowden cable 26 connected swimmers 27 is in the float box 28 , as in 6 is shown in a position in which the float 27 no pulling force or pulling force on the Bowden cable 26 exerts that is smaller than that for unlocking the locking element 20 necessary traction.

To unlock the locking element 20 or disengage the locking element 20 with the locking element holder 21 must the traction of the Bowden cable 26 greater than the pressure force of the compression spring 22 be, with which the compression spring 22 the locking element 20 in the locking element holder 21 biases.

In 8th is the locking device 8th according to the 5 and 6 shown in the unlocked position, in which the locking element 20 out of engagement with the locking element receptacle 21 and the flap element 3 unlocked in the closed position and pivotable to its open position.

As in the embodiment in 8th is shown causes an increase of liquid in the area of the float box 28 that the swimmer 27 moves upwards with increasing liquid level and thereby a tensile force on the Bowden cable 26 applies. The Bowden cable 26 is in which in the 7 and 8th shown embodiment, in the region of a lower end of the float box 28 in and out and with a lower end of the float 27 connected. In this way, a train on the Bowden cable 26 exercised when the swimmer 27 in the float box 28 moved upwards.

The shimmer moves 27 in the float box 28 due to a rising liquid level, it brings a pulling force to the Bowden cable 26 on. To a sufficiently large tensile force on the locking element 20 apply to unlock or disengage the locking element 20 with the locking element holder 21 the liquid level in the floating box must be 28 a predetermined level which an unlocking pressure threshold on the flap element 3 corresponds to reach. When this level or threshold is reached, the pulling force is through the Bowden cable 26 big enough for the locking element 20 with the locking element holder 21 disengage and unlock so that the flap element 3 swing into its open position and the water or liquid through the frame opening 7 can escape.

In 9 is a perspective view of a flap device 1 according to a third Embodiment of the invention shown. 10 shows an interior or rear view of the flap device 1 according to 9 ,

The flap device 1 According to the third embodiment, this essentially corresponds to the flap device 1 according to the second embodiment, so that reference is made to the description of the second embodiment, in order to avoid unnecessary repetition. In particular, the flap device 1 according to the third embodiment, the locking element 20 , the bolt element holder 21 , the holder 23 and the spring element 22 according to the second embodiment, as previously with reference to FIGS 5 to 8th has been described.

The locking device 8th the flap device 1 according to the third embodiment is in contrast to the second embodiment with a linkage 29 instead of a Bowden cable 26 provided for actuating the locking element 20 , The linkage 29 Here is for example with a float 27 connected as in the embodiment in the 9 and 10 is shown.

In 11 a sectional view BB of the flap device is shown, wherein the flap element 3 the flap device 1 is in its closed position. In the closed position, the locking element 20 by the spring element 22 in the locking element holder 21 biased. The first end of the locking element 20 is through the opening 24 the holder 23 passed and with the linkage 29 connected. The linkage 29 has, for example, a first and a second rod element 30 . 31 , as well as a rod holder 32 on which on the flap element 3 is attached.

The first rod element 30 is at one end to the first end of the locking element 20 and with the other end with one end of the second rod member 31 connected. The second rod element 31 is with his other end turn with the float 27 connected. Here is the second rod element 31 rotatable about a pivot point between its ends 33 on the linkage bracket 32 appropriate. Depending on how far the swimmer 27 moved upward due to a rising liquid level, the second rod element 31 around his fulcrum 33 on the linkage bracket 32 turns and exerts a pulling force on the associated with him first rod element 30 and the locking element 20 out, like in the 11 and 12 is shown.

In the in 11 shown embodiment is initially no or no sufficient amount of water by the flap device 1 closed water channel to open this. The one with the second rod element 31 connected swimmers 27 is therefore in a locking position, in which the locking element 20 in engagement with the locking element receptacle 21 is and the flap element 3 the frame opening 7 closes. This can be the weight of the float 27 , the locking element 20 additionally press or hold in its locking position. As in the embodiment in 11 is shown, the flap device 1 an additional sealing device 17 on, as previously z. B. with respect to the 1 - 4 has been described.

The water level in the water channel can now, as in the embodiment in 12 shown is so far that the water is in contact with the float 27 comes and raises this. Due to the rising water level becomes the float 27 moves upward and rotates the second rod member connected to it 31 around its pivot 33 on the linkage bracket 32 , The second rod element 31 thereby moves the first rod element 30 and the locking element associated with it 20 out of engagement with the locking element receptacle 21 , When the rising water level finally reaches a level corresponding to an unlocking pressure threshold, the second bar element becomes 31 by the swimmer 27 so far turned that the first rod element 30 as far as pulled down, that is connected to it the locking element 20 out of engagement with the locking element receptacle 21 comes and the flap element 3 is pivotable in its open position. This allows water from the water channel through the frame opening 7 pass. The outflowing water in turn causes a decrease in the water level in the water channel.

In 13 is a sectional view of a flap device 1 with a locking device 8th shown according to a fourth embodiment of the invention. Here is the locking element 20 as a shearing bolt 34 formed, which at least one predetermined breaking point 35 and in a locking element receptacle 21 taken up or engaged with this. To open the flap element 3 becomes the shear bolt 34 at its breaking point 35 erupted.

For example, if a water level and / or gas pressure within the water channel increases, which passes through the flap device 1 is closed, to a predetermined unlocking pressure threshold, the force is that of the water and / or gas on the flap element 3 is exercised sufficiently large to the shear bolt 34 at the breaking point 35 to break through.

As in the embodiment in 13 shown is the shear bolt 34 for example, in a separate bolt holder 36 received, which on the flap element 3 or a retaining plate attached to the flap element 37 is appropriate. Between the bolt holder 36 and the shear bolt 34 is optionally additionally a spring element 22 provided, z. B. a compression spring, with which the shear pin 34 is sufficiently biased, so that it is not unintentional from the locking element recording 21 is removable. The shear bolt 34 is with its upper end in the locking element recording 21 taken up to the flap element 3 in its closed position to lock or hold. The respective predetermined breaking point 35 is here, as in the embodiment in 13 indicated by a dotted line on the shear pin 34 outside its receptacle in the bolt holder 36 and the locking element receptacle 21 intended.

The locking element holder 21 and the spring element 22 of the shear-off 34 work together in such a way that the shear bolt 36 upon reaching the unlocking pressure threshold, at the respective break point 35 breaks through and not unintentionally from the locking element recording 21 pops out by springing back the shear bolt 34 ,

Furthermore, in 14 a sectional view of a flap device 1 and a locking device 8th shown according to a fifth embodiment of the invention. Here is the locking element 20 as a pin element 38 formed, which with a spring element 22 is coupled such that when a predetermined Entriegelungsdruck threshold on the flap element 3 is reached, the pin element 38 from the locking element holder 21 spring-out and out of engagement with the locking element recording 21 comes. As previously with reference to 13 has been described, is a water level and / or a gas pressure within the water channel, which through the flap device 1 is closed, sufficiently large around the flap element 3 to unlock and open when the water level and / or the gas pressure reach a predetermined unlocking pressure threshold. When the unlock pressure threshold is reached, the force applied by the water and / or gas to the flap member 3 is exercised sufficiently large to the pin element 38 out of engagement with the locking element receptacle 21 bring to. The flap element 3 is then unlocked and can open and the respective fluid, ie a liquid such as water and / or gas, from the channel through the frame opening 7 escape.

As in the embodiment in 14 is shown, the pin member 38 z. B. on a rounded or curved portion, which in a corresponding recess of the locking element receptacle 21 is included or with the spring element 22 is biased against it. The rounded end of the pin element 38 with which it is in the locking element receptacle 21 is added, also simplifies the opening of the flap element 3 ,

Furthermore, the locking element receptacle 21 outside the recess in which the pin element 38 is receivable on the side of the flap element 3 be formed bevelled upwards. The bevel 39 additionally facilitates the locking of the flap element 3 when pivoting the flap element 3 in the closed position.

In the 15 and 16 is a perspective view of the flap device 1 with the locking device 8th according to 14 shown. The flap device 1 is in 15 thereby shown in the closed position, in which the flap element 3 the opening 7 of the frame 2 completely closes. In this position is the locking element 20 in the locking element holder 21 picked up and used with the spring element 22 against or in the locking element receptacle 21 biased.

Now increases a gas pressure and / or a liquid pressure or liquid level on the inside of the flap element 3 to an associated unlock pressure threshold, the force on the flap element 3 big enough to hold the pin element 38 against the spring force of the spring element 22 from the locking element holder 21 to move and thereby the flap element 3 to unlock so that it can open, as in the perspective view in 16 is shown. There is the flap element 3 shown during opening.

In this case, gas and / or a liquid such. As water, through the opening 7 of the frame 2 leak and so for example bleed a channel or drain a liquid such as water, for example, to prevent flooding of the water channel.

In the 17 and 18 is a sectional view of the flap device 1 with the locking device 8th according to 13 shown.

In the illustration in 17 is the shear bolt 34 in the locking position in the locking element receptacle 21 recorded and has an intact breaking point 35 on. The flap element 3 closes the opening in the locking position 7 of the frame 2 so that z. B. no water through the valve device 1 can escape. The water level in which 17 shown Embodiment is below a level for a corresponding unlocking pressure threshold. The force of water on the flap element 3 is therefore too low to the shear bolt 34 at its breaking point 35 to break through, leaving the flap device 1 remains closed at the existing, low water level.

If the water level rises enough to reach the unlocking pressure threshold, the shear pin breaks 34 at its breaking point 35 through, leaving the flap element 3 from its anchorage in the locking element holder 21 is released and about its pivot axis 6 can swing into its open position.

In 19 is a sectional view of a flap device 1 with a locking device 8th according to a sixth embodiment of the invention.

The locking device 8th also has a shear bolt 34 with at least one predetermined breaking point 35 up in a latch element pickup 21 taken up or engaged with this. The shear bolt 34 is doing by means of a spring element 22 , z. As a compression spring, sufficiently biased so that it is not unintentional from the locking element recording 21 is removable. The shear bolt 34 is with its upper end in the locking element recording 21 taken up to the flap element 3 in its closed position to lock or hold. The respective predetermined breaking point 35 is as before with reference to 13 was described, here on the shear pin 34 outside its receptacle in the bolt holder 36 and the locking element receptacle 21 intended. The locking element holder 21 and the spring element 22 of the shear-off 34 work together in such a way that the shear bolt 34 upon reaching the unlocking pressure threshold, at the respective break point 35 breaks through and not unintentionally from the locking element recording 21 pops out by springing back the shear bolt 34 ,

In the in 19 embodiment shown are the shear pin 34 and the spring element 22 directly in the flap element 3 provided, z. B. in a depression 40 thereof. It can in the depression 40 for example, an additional base plate 41 for supporting the spring element 22 and further an additional sleeve 42 be provided, in which the shear bolt 34 and the spring element 22 are arranged as in the embodiment in 19 is illustrated. However, the invention is directed to this particular embodiment of the receptacle for the shear pin 34 and the spring element 22 not limited. Any form of receptacle may be provided which is suitable for the shear bolt 34 and the spring element 22 take.

For sealing the flap element 3 and the frame opening 7 , as in the embodiment in 19 is shown, instead of a rubber seal as a sealing device 17 , as previously z. In 3 , a slide 43 on the frame 2 and the flap element 3 be appropriate for tightly closing the frame opening 7 , in particular for liquid-tight and / or gastight sealing. The foil 43 is thereby circumferentially on the frame 2 and the flap element 3 attached, for example by means of two circumferential bars 44 . 45 , An inner circumferential strip 44 attaches an inner portion of the film 43 on the flap element 3 and the other outer circumferential bar 45 an outer section of the film 43 on the frame 2 , The strips 44 . 45 can, as in the embodiment in 19 on the frame, for example 2 and / or the flap element 3 be attached by screwing and / or gluing etc. or by means of another attachment or combination of fasteners. Instead of or in addition to the strips, any other type of fastening of the film to the flap device can be provided, which is suitable for fastening the film to the flap device in order to seal the frame opening, in particular to seal it in a liquid-tight or gas-tight manner.

In 20 is a perspective view of the flap device 1 according to 19 shown in a partially open position and in 21 in a front or outer view, wherein the flap device 1 closed is.

To open the flap element 3 becomes the shear bolt 34 at its breaking point 35 broken through and the foil 43 torn. For example, increases a water level or a gas pressure within the water channel, which through the flap device 1 is closed, to a predetermined unlocking pressure threshold, the force is that of the water or the gas on the flap element 3 is exercised sufficiently large to the shear bolt 34 at the breaking point 35 let break and also the foil 43 to sever.

Instead of two ribbons 5 at the bottom, as in the previously described embodiments, the flap device 1 in which in the in 19 . 20 and 21 shown embodiment hinge pin 46 as a joint device 4 on for pivoting the flap element 3 around a pivot axis 6 , The hinge pins 46 are on the two sides of the flap element 3 arranged opposite each other and together form the pivot axis 6 to which the flap element 3 from its closed position to an open position is pivotable.

In 22 is the flap device 1 according to the 19 - 21 closed and shown in a sectional view. In the closed position the flap element closes 3 the frame opening 7 complete and tight, in particular liquid-tight and / or gas-tight.

For example, if the level of fluid or water increases on the inside of the valve member 3 as in the sectional view of the flap device 1 in 23 is shown presses the water against the flap element 3 , In this case, when the water level rises to a predetermined unlocking pressure threshold value, the force through the water is on the flap element 3 is exercised sufficiently large to the shear bolt 34 at the breaking point 35 let break and also the foil 43 tear through. The flap element 3 then swings outward, as in 23 is shown, allowing water through the frame opening 7 can escape to the outside. The same applies if a gas on the inside of the flap element 3 reached the unlocking pressure threshold. The gas pressure causes the shear bolt 34 at its breaking point 35 breaks and the foil 43 is severed so that the flap element 3 around its pivot axis 6 can be swung outwards.

In 24 is a perspective view of a flap device 1 shown according to a seventh embodiment. In 25 is this flap device 1 shown in an interior or rear view. The locking device 8th the flap device 1 points as a locking element 20 a pneumatically or hydraulically actuated piston 47 (For example, a pneumatic cylinder), on, by means of a spring element 22 is biased in a locking position. Furthermore, the piston 47 with an actuating device 9 about their direction 51 connected for unlocking and locking. In the locking position is the piston 47 as a locking element 20 in a corresponding locking element receptacle 21 taken up or engaged with this. The locking element 20 or the piston 47 is in the in the 24 and 25 shown embodiment of the flap element 3 attached (for example, directly with or by means of a bracket 48 for a piston housing 49 ) and the locking element receptacle 21 on the frame 2 , A reverse attachment is also possible. This applies to all embodiments of the invention and in particular for in the 1 - 27 shown embodiments.

As before, for example, with reference to the 1 to 18 has also been described in the 24 and 25 embodiment shown two bands 5 on the lower side of the flap element 3 as a joint device 4 on for pivoting the flap element 3 around a pivot axis 6 in an open position. Furthermore, an additional sealing device 21 on the flap element 3 provided, for example, a rubber seal 18 which the flap element 3 surrounding the frame and the frame opening 7 seals when the flap element 3 is in the closed position. The seal is in particular liquid-tight and / or gas-tight.

In the 26 and 27 is the embodiment of the flap device 1 according to the 24 and 25 shown in the closed position and an open position.

In the closed position, as in 26 is shown, the flap element lies 3 on the frame 2 with its sealing device 17 sealingly so that it is the frame opening 7 seals. The piston 47 is here on the spring element 22 biased in its locking position. In the locking position is the piston 47 as a locking element 20 with one end in the latch element receptacle 21 taken up or engaged with this. The piston 47 is in the piston housing 49 slidably received and forms with its upper or first end with this a first pressure chamber 50 who has a lead 51 with an actuating device 9 connected is. Furthermore, in a second room 57 between the lower or second end of the piston 47 and the piston housing 49 the spring element 22 arranged, with which the piston 47 is biased in its locking position. This can additionally ensure that the piston 47 in engagement with the locking element receptacle 21 is and can not solve it unintentionally. The piston housing 49 is z. B. by means of the holder 48 on the flap element 3 attached. But it can also be any other attachment of the piston housing and its piston 47 be formed or provided.

To unlock the flap element 3 is in the in the 26 and 27 shown embodiment of compressed air (or another medium, eg., A hydraulic fluid, etc.) from a pressure accumulator 58 (sh dotted line in 26 and 27 ), which with the actuator 9 is coupled, in the pressure room 50 above the piston 47 directed. The piston 47 is thereby moved down and against the spring force of the spring element 22 moved while disengaged from the locking element recording 21 brought. By loosening the piston 47 from the locking element holder 21 can the flap element 3 around its pivot axis 6 swing outwards and the frame opening 7 release.

In an alternative embodiment, the second space may also be used 57 be used or formed as a pressure chamber in which the spring element 22 is arranged. In this case, the pressure chamber 57 with a line (dashed line) with the actuator 9 and one with the actuator 9 coupled pump (not shown) connected. To move the piston 47 out of engagement with the locking element receptacle 21 is the corresponding air (or another in the pressure chamber 57 existing medium, eg. B. a hydraulic fluid, etc.) from the pressure chamber 57 by means of the pump (not shown) of the actuator 9 sucked off and a negative pressure in the pressure chamber 47 generated, which causes the piston 47 against the spring force of the spring element 22 down and out of engagement with the locking element receptacle 21 is moved. As soon as the piston 47 out of engagement with the locking element receptacle 21 is the flap element 3 around its pivot axis 6 swing outwards and the frame opening 7 release.

The two embodiments with a first and a second pressure chamber 50 and 57 can also be combined with each other, so that air or hydraulic fluid is supplied in a pressure chamber while it is drained or sucked off in the other pressure chamber for moving the piston 47 inside the piston housing 49 in a desired direction. As in the embodiment in 26 and 27 is shown, the actuating device 9 For example, a control unit 52 on that with a float switch 53 is coupled. The control unit 52 controls in the embodiment in 26 and 27 , the supply of air or hydraulic fluid from the with the control unit 52 connected accumulator 58 in the pressure room 50 above the piston 47 to the piston 47 to move out of its locking position. The accumulator 58 is in the embodiment in the 26 and 27 indicated by a dotted line. The accumulator 58 For example, it can be supplied externally with compressed air or hydraulic fluid and / or supplied with compressed air or hydraulic fluid via a connected compressor or small compressor.

In 26 There is no water or sufficient water level around the float switch 53 to operate and thus the actuator 9 for supplying air via the connected accumulator into the upper pressure chamber 50 ,

If the level of fluid or water rises on the inside of the valve element 3 on the other hand, as in the sectional view of the flap device in 27 is shown, then the float switch 3 operated when the water level has reached a predetermined level or the corresponding unlocking pressure threshold.

The float switch 53 gives a corresponding pulse or signal to the control unit 52 the actuator 9 that a sufficient water level is reached, which corresponds to the unlocking pressure threshold. The control device then controls 52 the pressure accumulator coupled or connected to it 58 so that this compressed air or a hydraulic fluid in the first pressure chamber 50 above the piston 48 into the piston housing 47 passes. The pressure of the compressed air or the hydraulic fluid in the upper pressure chamber 50 on the piston 47 is generated, it is chosen so that it is sufficient for the piston 47 against the spring force of the spring element 22 down or out of engagement with the locking element receptacle 21 to move.

As soon as the piston 47 out of engagement with the locking element receptacle 21 is, the flap element can 3 swing outward as in 27 is shown, and the water on the inside of the flap device 1 can through the frame opening 7 step outside.

The compressed air from the accumulator 58 can through the control unit 52 for example, via a relay and a valve delivered and the upper pressure chamber 50 of the piston housing 49 and the piston 47 be supplied. However, the invention is not limited to this specific embodiment. In an alternative embodiment in which, as described above, the lower or second pressure chamber 57 is used, the control unit 52 be coupled with a pump, which for unlocking the piston 47 a suitable negative pressure in the pressure chamber 57 generated. In this case, the float switch gives 53 a corresponding pulse or signal to the control unit 52 the actuator 9 that a sufficient water level is reached, which corresponds to the unlocking pressure threshold. The control device then controls 52 the coupled or connected in this case with her pump, so that they have a negative pressure in the second pressure chamber 57 produced by aspiration of a medium, such as air or hydraulic fluid, from the pressure chamber 57 , Due to the resulting negative pressure in the lower pressure chamber 57 this can be the piston 47 against the spring force of the spring element 22 down and out of engagement with the locking element receptacle 21 to be moved.

The invention is not limited to the specific arrangement of the piston and its piston housing with the pressure chambers and the locking element receiving and their connection to the actuator. Any arrangement can be provided which is suitable for moving the piston from a locking position to an unlocking position for opening the flap element.

Instead of referring to the 24 - 27 described arrangement of the piston and its actuator, and the embodiment of the actuator with a float switch, any other configuration with a piston and an actuator for actuating the piston can be provided, which is adapted to couple the piston with a locking element receptacle and from to decouple or disengage it for locking and unlocking the flap element of the flap device.

Although the present invention has been fully described above with reference to preferred embodiments, it is not limited thereto but is modifiable in a variety of ways. In particular, the embodiments described above can also be combined with each other, in particular individual features thereof.

The flap devices according to embodiments of the invention and in particular those with reference to the 1 to 27 described embodiments of the invention can be used again after operation without modifications after the closure. The flap element according to the invention, after it has been actuated and unlocked to be pivoted to its open position to release the frame opening, can be moved back to its original position and close the frame opening again. The flap member is also locked again in its original position and can be operated again when z. B. a water level in a channel which is closed by the flap device reaches a locking threshold.

Furthermore, the flap device according to the invention and its function easily at any time or z. B. be checked at regular intervals, without, the replacement of parts. A simple recurring test is possible. In particular, no parts need to be replaced.

LIST OF REFERENCE NUMBERS

1

flap device

2

frame

3

flap element

4

joint device

5

tape

6

swivel axis

7

frame opening

8th

locking device

9

actuator

10

magnet

11

Magnetic counterpart

12

magnetic holder

13

slot

14

Klappenhalter

15

Holder (magnetic counterpart)

16

Opening (nuclear power plant)

17

seal means

18

rubber seal

19

pin element

20

locking element

21

Locking element recording

22

spring element

23

Bracket (locking element)

24

opening section

25

Paragraph (spring element)

26

Bowden

27

swimmer

28

Water tank

29

linkage

30

first rod element

31

second rod element

32

rod holder

33

pivot point

34

shear

35

Breaking point

36

bolt bracket

37

Retaining plate

38

pin element

39

bevel

40

deepening

41

baseplate

42

shell

43

foil

44

inner strip

45

outer bar

46

hinge pin

47

pneumatically or hydraulically actuated piston

48

Bracket (piston housing)

49

piston housing

50

pressure chamber

51

management

52

pump

53

float switch

54

channel

55

electrical control or regulating device

56

electric wire

57

second pressure chamber

58

accumulator

Claims (20)

Flap device ( 1 ) for opening and closing an opening ( 16 ) of a channel ( 54 ), in particular a fluid channel of a power plant, with a frame ( 2 ), which has a frame opening ( 7 ) and a flap element ( 3 ), which pivotable on the frame ( 2 ) and between a closed position in which the frame opening ( 7 ) is closed, and an open position in which the frame opening ( 7 ) is pivotable, wherein the flap device ( 1 ) a locking device ( 8th ) for locking the flap element ( 3 ) in the closed position and wherein the locking device ( 3 ) by itself and / or by means of an actuating device ( 9 ) is unlockable. Flap device according to claim 1, characterized in that the locking device ( 8th ) at least one magnet ( 10 ) and an associated magnetic counterpart ( 11 ), which at opposite positions on the frame ( 2 ) and the flap element ( 3 ), the magnet ( 10 ) the flap element ( 3 ) locked in the closed position by the magnet ( 10 ) due to the magnetic force with the magnetic counterpart ( 11 ) is in contact. Flap device according to claim 2, characterized in that the magnet ( 10 ) is a permanent magnet or an electromagnet and that the locking device ( 8th ) is unlocked when a release pressure threshold by the fluid in the channel on the flap element ( 3 ) or an actuator ( 9 ) the connection of the magnet ( 10 ) and its magnetic counterpart. Flap device according to one of the preceding claims 2 or 3, characterized in that the magnet ( 10 ) and / or the magnetic counterpart ( 11 ) on the flap device ( 1 ) or relative to the flap element ( 3 ) are designed to be displaceable and fixable in a defined position. Flap device according to one of the preceding claims, characterized in that the locking device ( 8th ) at least one locking element ( 20 ), which in an associated locking element receptacle ( 21 ) is receivable or engageable with this for locking the flap element ( 3 ) in the closed position and wherein the locking device ( 8th ) preferably a spring element ( 22 ), which the locking element ( 20 ) in the locking element receptacle ( 21 ). Flap device according to claim 5, characterized in that the spring element ( 22 ) and the locking element ( 20 ) cooperate in such a way that the locking element ( 20 ) out of engagement with the locking element receptacle ( 21 ) is when a release pressure threshold by the fluid on the flap element ( 3 ) is reached. Flap device according to claim 6, characterized in that the locking element ( 20 ) against the pressure of the spring element from the engagement with the locking element receptacle ( 21 ) is movable when the unlocking pressure threshold is reached, wherein the locking element ( 20 ) in particular a rounded receiving portion and the locking element receiving a corresponding rounded the receiving portion recess. Flap device according to one of the preceding claims 6 or 7, characterized in that the locking element ( 20 ) a shear bolt ( 34 ) with at least one predetermined breaking point ( 35 ), on which the shear bolt ( 34 ) breaks when the unlocking pressure threshold is reached. Flap device according to claim 8, characterized in that a film ( 43 ) on the flap device ( 1 ) and attached thereto is the frame opening ( 7 ) when the flap element ( 3 ) is in the closed position and wherein the film ( 43 ) together with the shear bolt ( 34 ) is cut when the unlocking pressure threshold is reached. Flap device according to one of the preceding claims 5 to 9, characterized in that the locking element ( 20 ) as a piston ( 47 ) is formed, which is arranged displaceably in a piston housing and forms therein a first upper and / or a second lower pressure chamber, wherein the spring element is arranged in the second lower pressure chamber and the piston ( 47 ) in the locking position and wherein the piston ( 47 ) out of engagement with the locking element receptacle ( 21 ) is movable by setting a suitable pressure in the first upper pressure space ( 50 ) and / or a suitable negative pressure in the second lower pressure space ( 57 ) for moving the locking element from the bolt receptacle. Flap device according to one of the preceding claims, characterized in that the actuating device ( 9 ) at least one Bowden cable ( 26 ) and at least one associated float ( 27 ), at least one linkage ( 29 ) and at least one associated float ( 27 ), at least one electrical control or regulating device ( 55 ), and / or at least one control unit ( 52 ) with an accumulator ( 58 ) and / or a pump and an associated float switch ( 53 ) having. Flap device according to claim 11, characterized in that the Bowden cable ( 26 ) at one end with the locking element ( 20 ) and at another end with the float ( 27 ) and wherein the float ( 27 ) preferably in a float box ( 28 ) dependent on a fluid level in the channel is slidably disposed. Flap device according to one of claims 11 to 12, characterized in that the linkage ( 29 ) at one end with the locking element ( 20 ) and at another end with the float ( 27 ) and wherein the linkage ( 29 ) preferably by means of a linkage support ( 32 ) on the flap element ( 3 ) and a first rod element ( 30 ), which at one end with the locking element ( 20 ) and at the other end with the second rod element ( 31 ) and wherein the second rod element ( 31 ) with the float ( 27 ) and in a fulcrum ( 33 ) rotatable on the linkage bracket ( 32 ) is articulated. Flap device according to one of the preceding claims 11 to 13, characterized in that when the float ( 27 ) reaches a fluid level which corresponds to the unlocking pressure threshold, the Bowden cable ( 26 ) or the linkage ( 29 ) the locking element ( 20 ) out of engagement with the locking element receptacle ( 21 ) brings to pivot the flap element ( 3 ) in the open position. Flap device according to one of claims 11 to 14, characterized in that the control unit ( 52 ) of the actuating device ( 9 ) with the associated pressure accumulator ( 58 ) a sufficient pressure in the first upper pressure space ( 50 ) and / or with the pump connected to it a sufficient negative pressure in the second lower pressure chamber ( 57 ) for moving the piston ( 47 ) out of engagement with the locking element receptacle ( 21 ), when the float switch ( 53 ), whereby the float switch ( 53 ) is preferably actuated when the fluid level in the channel reaches a predetermined level. Flap device according to one of claims 11 to 15, characterized in that the pressure accumulator ( 58 ) via a line ( 51 ) with the first upper pressure chamber ( 50 ) is connected for supplying a gas, in particular air, and / or a fluid, in particular water or a hydraulic fluid. Flap device according to one of the preceding claims 11 to 16, characterized in that the electrical control or regulating device ( 55 ) as an actuating device ( 9 ) drives the magnet, so that the magnet ( 10 ) in or out of contact with the magnetic counterpart ( 11 ) can be brought. Flap device according to one of claims 1 to 17, characterized in that between the flap element ( 3 ) and the frame ( 2 ) at least one sealing device ( 17 ) is provided for sealing the frame opening ( 7 ), wherein the sealing device is preferably a rubber seal ( 18 ), which circumferentially on the flap element ( 3 ) or frame ( 2 ) is attached. Flap device according to one of claims 1 to 18, characterized in that the flap element ( 3 ) by means of a hinge device ( 4 ) pivotable on the frame ( 2 ), the hinge device ( 4 ) at least one hinge, one band ( 5 ) and / or a hinge pin ( 46 ) having. Power plant, in particular nuclear power plant, with a fluid channel, which has an opening which can be opened and closed by means of a flap device according to one of claims 1 to 19.

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