JP2019086376A - Blowout device - Google Patents

Abstract

To provide a blowout device that can be reused after open-circuit operation without requiring manual work or electric power.SOLUTION: The blowout device comprises: a rotatable panel unit 3 in which two blowout panels 31, 32 are provided in shape of the letter V and which is rotatable around a revolving shaft 30; a weight 4 for applying moment in a direction in which the panel unit 3 rotates; and a stopper 5 for temporarily stopping the rotation of the panel unit 3 while an opening 100a is shut by the blowout panels 31, 32. When the internal pressure of the building rises to a prescribed value or above, the temporary stopping by the stopper 5 is released and the panel unit 3 is rotated by the moment of the weight 4, and the first blowout panel 31 having shut the opening 100a opens, causing the opening 100a to be released open. Thereafter, the second blowout panel 32 shuts the opening 100a, and the rotation of the panel unit 3 is temporarily stopped by the stopper 5.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a blowout apparatus for releasing pressure to the outside when the internal pressure of a building of a nuclear power generation facility rises.

  For example, if the main steam pipe rupture accident occurs outside the reactor containment vessel, the high temperature and high pressure primary coolant is released into the building, the internal pressure of the building rises, and the external pressure acting on the reactor containment vessel rises. There is a risk that the building's own functions may be impaired. At the time of such an accident, a blowout device is installed to release pressure (steam) inside the building to the outside to relieve the rise in internal pressure. As this blowout device, a clip type and a rupture are conventionally used. Disk types are widely used.

  In the clip type blowout apparatus, as shown in FIG. 7A, a blowout panel 102 for closing an opening 101a of an outer wall 101 of a building is temporarily fixed by a clip 103. Then, when the internal pressure of the building rises to a predetermined value or more, as shown in FIG. 7B, the temporary fixing by the clip 103 is released, the blowout panel 102 is detached, and the opening 101a is opened.

  As shown in FIG. 8A, in the blowout apparatus of the rupture disk type, the blowout panel 104 for closing the opening 101a of the outer wall 101 of the building has a scratched portion (a portion with a low withstand voltage) 104a formed in advance. . Then, when the internal pressure of the building rises to a predetermined value or more, as shown in FIG. 8B, the blowout panel 104 is broken from the damaged portion 104a, and the opening 101a is opened.

  In such a blowout apparatus, it is necessary to close the opening 101a again after the internal pressure of the building decreases (after the opening operation), but once the opening 101a is opened, the blowout panels 102, 104, etc. Not only does it need to be replaced, it takes time and money, but it can also expose workers. For this reason, there is known a blowout apparatus which can be quickly restored to its closing state after the opening operation (see, for example, Patent Document 1).

  The blowout device includes a closing panel attached by a fixing device, a wire attached at one end to the closing panel, and a panel restoration device for winding the other end of the wire at the opening of the building. Then, when the internal pressure of the building reaches a predetermined value or more, the fixing device is broken, and the closing panel is rotated to open the opening, and then the wire is wound by the panel restoration device to reclose the closing panel to the closing position. It can be installed.

JP, 2009-121917, A

  By the way, the inventor of the present application thinks that it may be assumed that it is desirable that the blowout device can be used continuously as the blowout device even after the opening operation once. However, in the blowout device described in Patent Document 1, when the fixing device is broken, the closing panel is rotated to open the opening, and thereafter the wire is wound by the panel restoration device to close the closing panel. It can not be used continuously as a blowout device even if it is re-installed. That is, since the fixing device is broken, in order to reuse it as a blow-out device, it is necessary to reinstall the fixing device, which requires work by a worker.

  In addition, when power is used to drive the panel restoration device, the wire can not be wound up in the event of a power failure. On the other hand, manually driving the panel restoration device requires operation and work by a worker.

  Therefore, an object of the present invention is to provide a blowout device that can be reused after an opening operation without requiring human work or power.

  In order to solve the above-mentioned problems, according to the invention of claim 1, a plurality of plate-like blowout panels are formed radially on a horizontal axis disposed at one end of an opening formed in a building of a nuclear power generation facility. A panel unit which is rotatable about the horizontal axis, a weight which gives a moment in the direction in which the panel unit rotates from the inside to the outside of the building, and the blowout panel blocks the opening. A stopper for temporarily stopping the rotation of the panel unit, and when the internal pressure of the building rises to a predetermined value or more, the stopper by the stopper is released and the panel unit is rotated by the moment; The blowout panel closing the opening is opened to open the opening, and then the next blowout panel closes the opening and the stopper Rotation of the panel unit is temporarily fixed, it is blown out and wherein the.

  According to the present invention, when the internal pressure of the building rises to a predetermined value or more due to an accident or the like, the panel unit is rotated by the moment by the weight portion, the blowout panel is opened and the opening is opened, and gas (vapor) in the building Is exhausted from the opening. Furthermore, as the panel unit rotates, the next blowout panel closes the opening, and the stopper temporarily stops the rotation of the panel unit. Then, when the internal pressure of the building rises again to a predetermined value or more, the panel unit is rotated again to repeat the operation of opening the opening.

  The invention according to claim 2 is characterized in that, in the blowout device according to claim 1, a closer is provided to slowly rotate the panel unit when the panel unit is rotated by the moment.

  The invention according to claim 3 is characterized in that, in the blowout device according to claim 2, a frame fitted into the opening is provided, and the panel unit and the closer are disposed on the frame.

  The invention of claim 4 is characterized in that, in the blowout device according to claims 1 to 3, the magnitude of the moment by the weight portion can be adjusted.

  The invention according to claim 5 is the blowout apparatus according to claims 1 to 4, wherein the opening is formed in an outer wall extending in the vertical direction of the building, and a horizontal axis of the panel unit is a lower end edge of the opening And the weight portion is provided on a blow-out panel which first blocks the opening.

  According to the invention of claim 1, even if the blowout panel is opened once and the opening is opened, the panel unit is rotated by the moment by the weight part and the next blowout panel closes the opening and the internal pressure of the building again. When the pressure rises above a predetermined value, the blowout panel reopens. In this manner, the apparatus can be used again as a blowout apparatus after the opening operation without requiring human work or power. In addition, since the next blowout panel automatically closes the opening even if the opening is opened, not only labor and cost can be reduced, but also the blowout device can be used continuously as a blowout device (prepared for the next blowout). ) Becomes possible. In addition, even when the opening operation (malfunction) occurs due to an earthquake or an external impact, it can be used immediately as a blowout device.

  According to the second aspect of the invention, since the closer for slowly rotating the panel unit is provided, the gas in the building can be properly and properly exhausted from the opening, and an impact is applied to the blowout panel etc. It is possible to prevent damage.

  According to the invention of claim 3, since the panel unit and the closer are disposed and unitized in the frame fitted into the opening, the blowout device can be easily and quickly achieved by fitting the frame into the opening. It can be installed. Moreover, since it is not necessary to process an opening part, a blowout apparatus can be installed easily and rapidly also to the existing and existing opening part.

  According to the invention of claim 4, since the magnitude of the moment by the weight portion is adjustable, the weight and size of the blowout panel, or the predetermined value of the internal pressure of the building (the internal pressure at which the blowout panel should open) changes. Even in this case, the blowout panel can be properly opened and closed (the panel unit can be rotated) by adjusting to an appropriate moment.

  According to the invention of claim 5, the horizontal axis of the panel unit is disposed at the lower end edge of the opening formed in the outer wall of the building, and the blowout panel for initially closing the opening is provided with a weight. Since the blowout panel provided with the weight portion falls with the rotation of the panel unit, the panel unit can be surely sequentially rotated by the moment of the weight portion. Further, since it is sufficient to provide the weight portion on the first blowout panel, the structure can be simplified and the maintainability is also improved.

It is a side view (partly sectional view) showing a schematic structure of a blowout device concerning Embodiment 1 of this invention, (a) shows a state where the first blowout panel is closed, (b) shows , (C) shows a state immediately before the second blowout panel is closed. It is a figure following FIG. 1, (d) shows the state which the 2nd blowout panel closed, and (e) is a figure which shows the state which the 2nd blowout panel opened. It is a side view (partly sectional view) showing a schematic structure of a blowout device concerning Embodiment 2 of this invention, (a) shows the state where the 1st blowout panel closed, (b) shows , (C) shows a state immediately before the second blowout panel is closed. It is a side view (partly sectional view) showing a schematic structure of a blowout device concerning Embodiment 3 of this invention, (a) shows the state where the 1st blowout panel was closed, (b) shows , (C) shows a state immediately before the second blowout panel is closed. It is a figure following FIG. 4, (d) shows the state which the 2nd blowout panel closed, and (e) is a figure which shows the state which the 2nd blowout panel opened. It is a side view (partly sectional view) showing a schematic structure of a blowout device concerning Embodiment 4 of this invention, (a) shows the state where the 1st blowout panel was closed, (b) shows , (C) shows a state immediately before the second blowout panel is closed. It is a side sectional view showing the outline composition of the conventional clip type blowout device, (a) shows a state where a blowout panel is closed, (b) is a figure showing a state where a blowout panel is opened. is there. It is a front view showing a schematic structure of a conventional rupture disk type blowout apparatus, wherein (a) shows a closed state of the blowout panel and (b) shows an open state of the blowout panel. is there.

  Hereinafter, the present invention will be described based on the illustrated embodiments.

Embodiment 1
1 and 2 are side views (partially sectional views) showing a schematic configuration of the blowout apparatus 1 according to this embodiment, and FIG. 1A shows that the first blowout panel 31 is closed. 1 (b) shows a state in which the first blowout panel 31 is opened, and FIG. 1 (c) shows a state immediately before the second blowout panel 32 is closed. d) shows a state in which the second blowout panel 32 is closed, and FIG. 2 (e) shows a state in which the second blowout panel 32 is open.

  The blowout apparatus 1 is an apparatus for releasing the pressure, that is, the gas (vapor) inside the building, to the outside when the internal pressure of the building of the nuclear power generation facility increases, mainly the frame 2, the panel unit 3 and , Weight (weight portion) 4, stopper 5, and closer 6. Here, in this embodiment, the case where the blowout apparatus 1 is installed on the (substantially vertical) outer wall 100 extending in the vertical direction of the building will be described, and the outer wall 100 has a window hole shape (front shape is substantially square) An opening 100a is formed.

  The frame 2 is a frame fitted into the opening 100a. That is, it is formed in the shape of a square window frame so as to be fitted along the inner peripheral surface of the opening 100a. Then, it can be fitted into the opening 100a and can be fixed to the outer wall 100 with a fixing tool such as a screw. The panel unit 3 and the closer 6 are disposed in such a frame 2 to be unitized.

  In the panel unit 3, a plurality of plate-like blowout panels 31, 32 have a radial shape on a rotation axis (horizontal axis) 30 disposed along the lower side (one end edge, lower end edge) of the opening 100 a , And is rotatable around an axis of rotation shaft 30. That is, the rotating shaft 30 is disposed on the frame 2 so as to be rotatable with the lower side of the frame 2 as a horizontal axis. Here, both ends of the rotary shaft 30 may be rotatably mounted on bearings provided on the vertical plate of the frame 2, or bearings provided on the lower side (lower horizontal plate) of the frame 2. It may be rotatably mounted on the

  In this embodiment, two blowout panels 31, 32 are arranged radially on such a rotation shaft 30, and the plate surfaces of the blowout panels 31, 32 are parallel to the axis of the rotation shaft 30. It is set up. That is, the blowout panels 31 and 32 are arranged in a V shape so as to rise upward from the rotating shaft 30. Each of the blowout panels 31, 32 is a square plate having substantially the same shape and size as the front shape of the opening 100a, and is shown in FIG. Thus, the opening 100a is closed.

  Then, as the rotating shaft 30 rotates around the horizontal axis, the blowout panels 31, 32 sequentially close and open the opening 100a. That is, as shown in FIG. 1A, first, the first blowout panel 31 is closed, and in the state where the plate surface extends in the vertical direction along the outer surface of the outer wall 100, the first blowout panel 31 blocks the opening 100a. Next, as shown in FIG. 1 (b), when the panel unit 3 is rotated and the first blowout panel 3 is open, the upper side of the opening 100a is largely opened, and the gas in the building is exposed to the outside. Flow. When the panel unit 3 is further rotated and the second blowout panel 32 is closed and the plate surface extends vertically along the outer wall 100, as shown in FIG. 2D, the second blowout is performed. The panel 32 closes the opening 100a again. Furthermore, as the panel unit 3 rotates and the second blowout panel 32 is opened as shown in FIG. 2 (e), the upper side of the opening 100a is largely opened again, and the gas in the building flows to the outside. . The panel unit 3 may be rotated only from the inside to the outside of the building.

  Here, when the first blowout panel 31 is opened as shown in FIG. 1 (b), the angle formed by the two blowout panels 31 and 32 is sufficiently evacuated of the gas inside the building, Also, the panel unit 3 is set to rotate properly by the weight 4 and the like. Furthermore, the two blowout panels 31, 32 are connected by the connecting bar 33 to ensure predetermined strength and rigidity. In addition, packing is disposed on the outer peripheral edge of the blowout panels 31 and 32 so that air tightness is secured when the opening 100a is closed.

  The weight 4 is a weight which gives a moment in the direction in which the panel unit 3 rotates from the inside to the outside of the building. That is, the weight 4 is provided on the outer surface of the first blowout panel 31 which closes the opening 100a first, and the moment that the panel unit 3 rotates in the outward direction of the building (clockwise in the figure) is always panel unit It is supposed to work on three.

  Here, as described later, the temporary fixing by the stopper 5 is released, and once the first blowout panel 31 is opened as shown in FIG. 1 (b), the first internal pressure drops even if the internal pressure of the building drops. The size of the moment, that is, the position and weight of the weight 4 so that the panel unit 3 reliably rotates until the blowout panel 31 does not close back and the second blowout panel 32 is temporarily fixed by the stopper 5 Is set.

  The stopper 5 is a stopper for temporarily stopping the rotation of the panel unit 3 in a state where the blowout panels 31, 32 close the opening 100a. In this embodiment, the stopper 5 is formed by the fixing plates 51, 52 and the latch 53. It is configured. That is, the first fixing plate 51 has a flat plate shape, is attached to the outer end face of the upper side portion (upper horizontal plate) of the frame 2, and protrudes toward the opening 100a. The second fixing plate 52 is flat and attached to the lower surface (inner surface) of the upper side of the frame 2 and protrudes toward the opening 100 a. Further, the distance between the first fixing plate 51 and the second fixing plate 52 is set to substantially the same size as the plate thickness of the first blowout panel 31, as shown in FIG. The upper end portion (free end portion) of the first blowout panel 31 is held between the fixed plate 51 and the second fixed plate 52 in order to temporarily stop the rotation of the panel unit 3 .

  The latch 53 is disposed so as to be able to advance and retract from the lower surface of the upper side of the frame 2, and in a state of projecting from the lower surface of the upper side of the frame 2, from the inside to the outside of the building as shown in FIG. It is formed in a substantially right triangle shape in which the amount of protrusion increases. Then, in a state in which no external force is applied, the panel unit 3 protrudes from the upper side portion of the frame 2, and when the panel unit 3 is rotated and pressed by the second blowout panel 32, as shown in FIG. When the second blowout panel 32 passes backward, it is projected from the lower surface of the frame 2 again, as shown in FIG. 2 (d). Further, the distance between the second fixing plate 52 and the latch 53 is set to substantially the same size as the plate thickness of the second blowout panel 32, and as shown in FIG. The upper end (free end) of the second blowout panel 32 is held between the and the latch 53 so that the rotation of the panel unit 3 is temporarily fixed.

  Here, the mounting strength of the first fixing plate 51 is as shown in FIG. 1 (b) when the internal pressure of the building rises to a predetermined value or more while the first blowout panel 31 closes the opening 100a. The first fixing plate 51 is set so as to be detached (the temporary fixing by the stopper 5 is released) by the pressure. Similarly, the attachment strength of the second fixing plate 52 is shown in FIG. 2 (e) when the internal pressure of the building rises to the same predetermined value or more while the second blowout panel 32 closes the opening 100a. Thus, the second fixing plate 52 is set to be released by the pressure. Here, in the state where the second blowout panel 32 blocks the opening 100a, as shown in FIG. 2D, the first blowout panel 31 and the weight 4 fall down, and the first blowout panel 31 and the weight 4 fall. A large moment is applied to the panel unit 3 as compared with the state of FIG. 1A in which the out panel 31 blocks the opening 100 a. For this reason, the mounting strength of the second fixing plate 52 is set to be stronger than the mounting strength of the first fixing plate 51.

  The closer 6 slowly rotates the panel unit 3 when the panel unit 3 is rotated by the moment of the weight 4. That is, it is an apparatus which prevents that the panel unit 3 rotates suddenly by control force, such as oil pressure, an air pressure, or a spring. More specifically, one end 61a of an arm 61 foldable at the central portion is rotatably connected to the lower horizontal plate of the frame 2 and the other end 61b of the arm 61 is second It is rotatably connected to the lower part of the inner surface (surface on the indoor side) of the blowout panel 32 of FIG.

  Then, in a state where the first blowout panel 31 is closed, as shown in FIG. 1A, the arm 61 is folded and accommodated in the frame 2 (opening 100a), and the first blowout panel 31 is opened. When the opening 100a is open, as shown in FIG. 1 (b), the panel unit 3 is slowly rotated to rotate the panel unit 3 slowly. Similarly, when the second blowout panel 32 is opened, the panel unit 3 is slowly rotated. Here, by the time the first blowout panel 31 is opened and the second blowout panel 32 is closed, the gas in the building flows from the opening 100a to the outside, and a sufficient time for the pressure in the building to drop is ensured. The control power of the closer 6 is set so that the panel unit 3 is slowly closed.

  Further, the closer 6 also has a role of limiting the panel unit 3 not to rotate more than a predetermined amount. That is, as shown in FIG. 2 (e), when the second blowout panel 32 is opened and the opening 100a is opened, the panel unit 3 is completely extended so that the rotation angle does not become a predetermined value or more. The length of the arm 61 is set. As a result, the blowout panels 31, 32 etc. fall too much and do not fall. A plurality of such closers 6 may be provided depending on the size, weight, and the like of the panel unit 3.

  Then, as shown in FIG. 1A, with the first blowout panel 31 closed and the rotation of the panel unit 3 temporarily stopped by the fixing plates 51 and 52, the internal pressure of the building rises to a predetermined value or more. Then, as shown in FIG. 1 (b), the first fixing plate 51 is removed, and the panel unit 3 is rotated by the moment by the weight 4, and the first blowout panel 31 is opened to open the opening 100a. . Further, the panel unit 3 rotates, and as shown in FIG. 1C, the second blowout panel 32 pushes up and passes the latch 53, and as shown in FIG. 2D, the second blowout The panel 32 closes the opening 100 a and the rotation of the panel unit 3 is temporarily stopped by the second fixing plate 52 and the latch 53. When the internal pressure of the building rises again to a predetermined value or more, as shown in FIG. 2 (e), the second fixing plate 52 is detached and the panel unit 3 is rotated by the moment by the weight 4. That is, the moment by the weight 4, the control force of the closer 6, the attachment strength of the fixing plates 51, 52 and the like are set so that such an operation is performed.

  According to the blowout apparatus 1 having such a configuration, at the beginning of installation, the first blowout panel 31 is closed and the gas inside the building is not released to the outside (FIG. 1 (a)). When the internal pressure of the building rises to a predetermined value or more due to an accident or the like, the panel unit 3 rotates to open the first blowout panel 31, opening the opening 100a and exhausting the gas in the building (see FIG. 1 (b). Subsequently, when the panel unit 3 is further rotated, the second blowout panel 32 closes the opening 100a, and the rotation of the panel unit 3 is temporarily stopped by the second fixing plate 52 (FIG. 2 (d)). . Thereafter, when the internal pressure of the building rises again to a predetermined value or more, the panel unit 3 rotates again, the second blowout panel 32 is opened, the opening 100a is opened, and the gas in the building is exhausted (FIG. 2) (E))

  As described above, according to the blowout device 1, even if the first blowout panel 31 is opened and the opening 100 a is opened, the panel unit 3 is rotated by the moment by the weight 4 and the second blowout panel The second blowout panel 32 is opened when the block 32 closes the opening 100a and the internal pressure of the building rises again to a predetermined value or more. In this manner, the apparatus can be used again as a blowout apparatus after the opening operation without requiring human work or power. In addition, since the second blowout panel 32 automatically closes the opening 100a once it is opened, not only labor and cost can be reduced, but it can be used continuously as a blowout device (next blowout) It is possible to prepare for out).

  Further, since the closer 6 is provided to rotate the panel unit 3 slowly, gas in the building can be properly and properly exhausted from the opening 100a, and the blowout panels 31, 32 etc. are damaged by damage. It becomes possible to prevent doing.

  Furthermore, the rotation shaft 30 of the panel unit 3 is disposed at the lower side of the opening 100a formed in the outer wall 100 of the building, and the weight 4 is provided to the first blowout panel 31 that closes the opening 100a first. Since the first blowout panel 31 provided with the weight 4 falls as the panel unit 3 rotates, the panel unit 3 can be surely sequentially rotated by the moment of the weight 4. That is, it is possible to reliably rotate the panel unit 3 sequentially from the state of FIG. 1 (a) to the state of FIG. 2 (e). Further, since it is sufficient to provide the weight 4 on the first blowout panel 31, the structure can be simplified and the maintainability is also improved.

  On the other hand, since the panel unit 3, the weight 4, the stopper 5 and the closer 6 are disposed in the frame 2 to be fitted into the opening 100 a to be unitized, fitting the frame 2 into the opening 100 a is easy and easy The blowout device 1 can be installed quickly. Moreover, since it is not necessary to process the opening part 100a etc., the blowout apparatus 1 can be installed easily and rapidly also to the existing and existing opening part 100a.

Second Embodiment
FIG. 3 is a side view (partially sectional view) showing a schematic configuration of the blowout apparatus 1 according to this embodiment, and (a) shows a state where the first blowout panel 31 is closed, b) shows a state in which the first blowout panel 31 is open, and (c) shows a state immediately before the second blowout panel 32 is closed. In this embodiment, the configuration is different from that of the first embodiment in that the magnitude of the moment by the weight 4 can be adjusted, and the same reference numerals are given to the same configuration as the first embodiment. I omit explanation. Further, the drawings showing the closed and open states of the second blowout panel 32 are omitted because they are the same as in the first embodiment.

  In this embodiment, the weight 4 is composed of a plurality of small weights 41, 42, and the first small weight 41 is fixed to the outer surface of the first blowout panel 31. In addition, the plurality of second small weights 42 are attachable to the first small weights 41, respectively, and the second small weights 42 having a predetermined weight have a predetermined number according to the magnitude of the required moment. It can be attached to the first small weight 41 only. Here, the method of attaching the second small weight 42 may be any method such as fastening with a bolt or gripping with a clamp.

  According to such an embodiment, since the magnitude of the moment by the weight 4 is adjustable, the weight and size of the blowout panels 31, 32 or the predetermined value of the internal pressure of the building (the blowout panels 31, 32 Even when the internal pressure to be opened or the like changes, it is possible to adjust the moment appropriately and to properly open and close the blowout panels 31 and 32 (rotate the panel unit 3). Here, in this embodiment, the magnitude of the moment is adjusted by adjusting the weight of the weight 4, but the magnitude of the moment may be adjusted by adjusting the position of the weight 4 .

Third Embodiment
FIGS. 4 and 5 are side views (partially sectional views) showing a schematic configuration of the blowout apparatus 1 according to this embodiment, and FIG. 4A shows that the first blowout panel 31 is closed. 4 (b) shows a state in which the first blowout panel 31 is open, and FIG. 4 (c) shows a state immediately before the second blowout panel 32 is closed. d) shows a state in which the second blowout panel 32 is closed, and FIG. 5 (e) shows a state in which the second blowout panel 32 is open. In this embodiment, the configuration is different from that of the first embodiment in that the lower side of the opening 100a is largely opened when the blowout panels 31, 32 open, and the same reference numerals are given to the same configuration as the first embodiment. The explanation is omitted by attaching.

  In this embodiment, the rotating shaft 30 of the panel unit 3 is rotatably disposed on the frame 2 with the upper side portion of the frame 2 as the horizontal axis, and is inverted V-shaped so as to hang downward from the rotating shaft 30. The blowout panels 31, 32 are arranged in the shape of a circle. Then, as the rotating shaft 30 rotates around the horizontal axis, the blowout panels 31, 32 close or open the opening 100a. At this time, as shown in FIGS. 4 (b) and 5 (e), when the blowout panels 31, 32 are open, the lower side of the opening 100a is largely opened so that the gas in the building flows to the outside. It has become. Further, the panel unit 3 is rotated only from the inside to the outside (counterclockwise in the figure) of the building so as not to close once the blowout panels 31, 32 are opened.

  The weight 4 is provided on the free end (lower) side of the inner surface (the inner side of the building) of the second blowout panel 32. In the closer 6, one end 61 a of the arm 61 is rotatably connected to the upper horizontal plate of the frame 2, and the other end 61 b of the arm 61 is rotated to the upper inner surface of the second blowout panel 32. It is connected freely.

  Here, the moment by the weight 4, the attachment strength of the fixed plates 51 and 52, and the magnitude of the control force of the closer 6 are set in the same way as in the first embodiment. However, in the state where the first blowout panel 31 blocks the opening 100a, as shown in FIG. 4A, the moment by the second blowout panel 32 and the weight 4 is acting. Compared with the state of FIG. 5D in which the blowout panel 32 blocks the opening 100a, a large moment is applied to the panel unit 3. For this reason, the attachment strength of the first fixing plate 51 is set to be stronger than the attachment strength of the second fixing plate 52.

  According to such an embodiment, when the blowout panels 31, 32 are opened, the gas in the building flows from the lower side of the opening 100a, so the gas in the building from the lower side of the opening 100a of the outer wall 100 It is effective when you want to Here, although the weight 4 is provided directly to the second blowout panel 32, the weight 4 may be provided to the second blowout panel 32 via a support member, whereby more various and appropriate moments can be provided. It is possible to give

Embodiment 4
FIG. 6 is a side view (partially sectional view) showing a schematic configuration of the blowout apparatus 1 according to this embodiment, and (a) shows a state where the first blowout panel 31 is closed, b) shows a state in which the first blowout panel 31 is open, and (c) shows a state immediately before the second blowout panel 32 is closed. In this embodiment, the configuration is different from that of the first embodiment in that the plate surface extends in the horizontal direction (lateral direction) in a state where the blowout panels 31, 32 are closed. The description thereof will be omitted by giving the same reference numerals. Further, the drawings showing the closed and open states of the second blowout panel 32 are omitted because they are the same as in the first embodiment. Here, the case where the blowout apparatus 1 is installed on the floor plate 110 which is horizontal to a building will be described, and the floor plate 110 is formed with an opening 110a having a window hole shape (a substantially square front shape).

  In this embodiment, the frame 2 is disposed so that the frame surface is horizontal, and the rotating shaft 30 of the panel unit 3 is disposed on the frame 2 so as to be rotatable about one side of the frame 2 as a horizontal axis. Blowout panels 31, 32 are disposed in a V-shape laterally from the rotation shaft 30. Then, as the rotating shaft 30 rotates around the horizontal axis, the blowout panels 31, 32 close or open the opening 100a. At this time, as shown in FIG. 6 (b), when the blowout panels 31, 32 are open, the other side of the opening 100a (anti-rotational shaft 30 side) is largely opened, and the gas in the building is under the floor. It is supposed to flow to the side.

  The weight 4 is provided on the free end side of the first blowout panel 31. In the closer 6, one end 61 a of the arm 61 is rotatably connected to a plate on the side of the rotation shaft 30 of the frame 2, and the other end 61 b of the arm 61 is an inner surface of the second blowout panel 32. It is rotatably connected to the rotary shaft 30 side. Here, the moment by the weight 4, the attachment strength of the fixed plates 51 and 52, and the magnitude of the control force of the closer 6 are set in the same way as in the first embodiment.

  According to such an embodiment, the gas in the building flows downward to the floor when the blowout panels 31 and 32 are opened, which is effective when it is desired to flow the gas in the building to the floor of the building. is there. Here, although the case where the blowout device 1 is installed on the floor plate 110 of the building has been described, it can be applied to the case of installing on the ceiling of the building etc. Go to the head.

  The embodiment of the present invention has been described above, but the specific configuration is not limited to the above embodiment, and even if there is a change in design or the like within the scope of the present invention, Included in the invention. For example, although the above-mentioned embodiment explained a case where panel unit 3 was provided with two blow-out panels 31 and 32, three or more blow-out panels may be provided. Moreover, although the weight 4 which is a separate body is provided with respect to the blowout panels 31 and 32, the weight 4 is integrally provided in the blowout panels 31 and 32 (the blowout panel 31 so that a predetermined moment acts) , 32 shapes and weights may be set).

  Further, although the stopper 5 is constituted by the fixing plates 51, 52 and the latch 53 and the fixing plates 51, 52 are provided to the blowout panels 31, 32, respectively, they may be constituted by one stopper member. For example, a stopper member is provided to be movable back and forth with respect to the frame 2, and the stopper member is engaged with the recess of the first blowout panel 31 in a state of projecting from the frame 2 and the stopper member May be retracted into the frame 2 and disengaged, the panel unit may be rotated, and the stopper member may be protruded from the frame 2 and engaged with the recess of the second blowout panel 32 again.

  In addition, although the rotation axis 30 is a horizontal axis, a hinge may be a horizontal axis, and a plurality of blowout panels 31, 32 may be disposed on the hinge. Furthermore, although the closer 6 having the same configuration as the door closer is used, a hinge closer may be used.

1 blowout device 2 frame 3 panel unit 30 rotation axis (horizontal axis)
31 1st blowout panel 32 2nd blowout panel 4 weight (weight part)
41 first small weight 42 second small weight 5 stopper 51 first fixing plate 52 second fixed plate 53 latch 6 closer 61 arm 100 building outer wall 100a opening

Claims (5)

A plurality of plate-like blowout panels are radially provided on a horizontal axis disposed at one end of an opening formed in a building of a nuclear power generation facility, and a panel rotatable about the horizontal axis. Unit,
A weight which gives a moment in the direction in which the panel unit rotates from the inside to the outside of the building;
A stopper for temporarily stopping rotation of the panel unit in a state where the blowout panel closes the opening;
When the internal pressure of the building rises above a predetermined value, the temporary stop by the stopper is released, the panel unit is rotated by the moment, and the blowout panel closing the opening is opened to open the opening Is released, and then the next blowout panel closes the opening and the stopper temporarily stops the rotation of the panel unit.
A blowout device characterized by And a closer for rotating the panel unit slowly when the panel unit is rotated by the moment.
The blowout device according to claim 1, characterized in that: A frame fitted into the opening;
The panel unit and the closer are disposed on the frame.
The blowout device according to claim 2, characterized in that. The magnitude of the moment by the weight portion can be adjusted freely,
The blowout device according to any one of claims 1 to 3, characterized in that. The opening is formed in an outer wall extending in the vertical direction of the building, and a horizontal axis of the panel unit is disposed at a lower end edge of the opening.
The weight is provided on a blowout panel which initially blocks the opening.
The blowout device according to any one of claims 1 to 4, characterized in that.

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