JP2019086322A - 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 blowout panel 3 for openably shutting up an opening 100a formed in a building of a nuclear power generation facility as it rotates in tabular form around one end edge part as the horizontal axis, and a weight 4 for applying moment in a direction in which the blowout panel 3 is closed. When the internal pressure of the building rises to a prescribed value or above, the blowout panel 3 opens against the moment and the opening 100a is opened; when the internal pressure of the building falls, the blowout panel 3 is closed by the moment and the opening 100a is shut.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 problems, the invention according to claim 1 is a blow-out panel that opens and closes freely an opening formed in a building of a nuclear power generation facility by pivoting around a plate-like end edge as a horizontal axis. And a weight portion giving a moment in the closing direction of the blowout panel, and when the internal pressure of the building rises above a predetermined value, the blowout panel opens against the moment and the opening is opened. The blowout panel is closed by the moment when the internal pressure of the building drops, and the opening is closed.

  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 blowout panel is opened by the internal pressure against the moment by the weight part, the opening is opened, and the gas (vapor) in the building is Exhausted from the opening. As a result, when the internal pressure of the building drops, the moment due to the weight portion closes the blowout panel and the opening is closed. Then, when the internal pressure of the building rises again to a predetermined value or more, the operation of opening the blowout panel again and opening the opening is repeated.

  The invention according to claim 2 is characterized in that, in the blowout apparatus according to claim 1, the closer comprises a closeer for slowly closing the blowout panel when the internal pressure of the building is lowered to close the blowout panel. Do.

  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 blowout panel 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 blowout panel is disposed so that the plate surface extends in the vertical direction and can be pivoted about a lower end edge as a horizontal axis. When the blowout panel is opened, the gas in the building flows upward.

  The invention of claim 6 is the blowout apparatus according to claims 1 to 4, wherein the blowout panel is disposed so that the plate surface extends in the vertical direction and is pivotable about the upper end edge as a horizontal axis, When the blowout panel is opened, the gas in the building flows downward.

  The invention according to claim 7 is the blowout apparatus according to any one of claims 1 to 4, wherein the blowout panel is disposed so that the plate surface extends in the lateral direction and is pivotable with one end edge as a horizontal axis. When the blowout panel is opened, the gas in the building flows into the building outdoors.

  According to the invention of claim 1, even if the blowout panel is opened once and the opening is opened, the weight part closes the blowout panel and the opening is closed, and the internal pressure of the building rises again to a predetermined value or more. Then the blowout panel opens again. In this manner, the apparatus can be used again as a blowout apparatus after the opening operation without requiring human work or power. Moreover, since the blowout panel is automatically closed when the internal pressure of the building drops, it is possible not only to reduce labor and cost but also to be able to be continuously used as a blowout device (prepared for the next blowout). Become. 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 invention of claim 2, since the close-out for slowly closing the blow-out panel is provided, gas in the building can be properly and properly exhausted from the opening, and an impact is applied to the blow-out panel etc. It is possible to prevent damage.

  According to the invention of claim 3, since the blowout panel 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. 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 by adjusting to an appropriate moment.

  According to the invention of claim 5, for example, when the blowout panel is disposed along the outer wall of the building, the gas in the building flows upward when the blowout panel is opened, so the blowout panel is not It is effective when you want to arrange gas vertically in the building and flow it above the building.

  According to the invention of claim 6, for example, when the blowout panel is disposed along the outer wall of the building, the gas in the building flows downward when the blowout panel is opened, so the blowout panel is disposed on the outer wall It is effective when you want to arrange gas vertically in a building and flow down the building.

  According to the invention of claim 7, for example, when the blowout panel is disposed along the ceiling of the building, the gas in the building flows to the upper side of the building outdoors when the blowout panel is opened. It is effective when you want to arrange the panel horizontally on the ceiling of the building.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side view (partially sectional view) which shows schematic structure of the blowout apparatus which concerns on Embodiment 1 of this invention, (a) shows the state which the blowout panel closed, (b) is a blowout. (C) is a figure which shows the state in the middle of closing of a blowout panel. It is a side view (partly sectional view) showing a schematic structure of a blowout device concerning Embodiment 2 of this invention, (a) shows a state where a blowout panel is closed, (b) is a blowout. (C) is a figure which shows the state in the middle of closing of a blowout panel. It is a side view (partly sectional view) showing a schematic structure of a blowout device concerning Embodiment 3 of this invention, (a) shows a state where a blowout panel is closed, (b) is a blowout. (C) is a figure which shows the state in the middle of closing of a blowout panel. It is a side view (partly sectional view) showing a schematic structure of a blowout device concerning Embodiment 4 of this invention, (a) shows a state where a blowout panel is closed, (b) is a blowout. (C) is a figure which shows the state in the middle of closing of a blowout panel. It is a side view (partially sectional view) which shows Embodiment 5 of this invention, (a) shows the state which the blowout panel closed, (b) shows the state which the blowout panel opened. (C) is a figure which shows the state in the middle of a blowout panel closing. It is a side view (partially sectional view) which shows Embodiment 6 of this invention, (a) shows the state which the blowout panel closed, (b) shows the state which the blowout panel opened. (C) is a figure which shows the state in the middle of a blowout panel closing. 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
FIG. 1 is a side view (partially sectional view) showing a schematic configuration of a blowout apparatus 1 according to this embodiment, (a) shows a state in which the blowout panel 3 is closed, and (b) shows (C) shows a state in which the blowout panel 3 is in the process of closing. 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, and mainly, the frame 2 and the blowout panel 3 And a weight (weight portion) 4 and a closer 5. Here, in this embodiment, the case where the blowout apparatus 1 is installed on the outer wall 100 of the building will be described, and the outer wall 100 is formed with an opening 100a in the shape of a window hole (having a substantially square front shape).

  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. In addition, a packing 21 is disposed at an end edge of the frame 2 on the outer surface side of the outer wall 100, and airtightness is ensured in a state where the blowout panel 3 is closed. The blowout panel 3 and the closer 5 are disposed in such a frame 2 to be unitized.

  The blow-out panel 3 is a plate-shaped panel that closes the opening 100 a so as to be freely opened and closed by rotating the one end edge as a horizontal axis. That is, the rotary shaft 31 is disposed on the lower side (one end edge, lower edge) of a substantially square plate slightly larger than the front shape of the opening 100a. The rotating shaft 31 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 31 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

  Then, the rotary shaft 31 pivots about the horizontal axis, whereby the blowout panel 3 closes or opens the opening 100a. Under the present circumstances, as shown to Fig.1 (a), in the state which the blowout panel 3 closed, the board surface is arrange | positioned so that it may be extended in the up-down direction along the outer surface of the outer wall 100. As shown in FIG. Further, as shown in FIG. 1 (b), when the blowout panel 3 is open, the upper side of the opening 100a is largely released so that the gas in the building flows upward. Thus, the blowout panel 3 is in the form of a half-opened window that rotates with the lower side as a horizontal axis.

  The weight 4 is a weight which always gives a moment in the closing direction of the blowout panel 3 and is provided on the inner surface side of the blowout panel 3 (inside of the building). That is, the first support bar 41 extending toward the rotary shaft 31 inside the building is provided at the center of the inner surface of the blowout panel 3, and the second support bar 42 extending inside the building is provided on the rotary shaft 31. ing. The weight 4 is provided at the free ends of the support bars 41 and 42 (on the inner surface side of the blowout panel 3 and on the side of the rotary shaft 31), and the opening 100a is closed. The position and weight of the weight 4 are set so that a moment always acts on the blowout panel 3. Also, with the blowout panel 3 closed, the position and weight of the weight 4 are set such that the weight 4 fits within the frame 2 (the opening 100a), that is, does not protrude inside the building. .

  The closer 5 slowly closes the blowout panel 3 when the internal pressure of the building drops after the blowout panel 3 opens and the blowout panel 3 closes. That is, it is an apparatus which prevents that the blowout panel 3 is suddenly closed by external pressure by control force, such as oil pressure, air pressure, or a spring. Specifically, one end 51a of an arm 51 foldable at the central portion is rotatably connected to the upper horizontal plate of the frame 2 and the other end 51b of the arm 51 is blowout in a configuration equivalent to a door closer. It is rotatably connected to the upper surface of the inner surface of the panel 3.

  Then, when the blowout panel 3 is closed, as shown in FIG. 1A, the arm 51 is folded and accommodated in the frame 2 (opening 100a), and when the blowout panel 3 is opened, as shown in FIG. As shown in (b), the arm 51 extends to restrict the opening of the blowout panel 3. Furthermore, while the blowout panel 3 is closing, as shown in FIG. 1 (c), the movement of the blowout panel 3 is slowed and the blowout panel 3 is slowly closed. Here, the gas in the building flows from the opening 100a to the outside until the blowout panel 3 opens and closes, and the blowout panel 3 is slowly closed so as to ensure a sufficient time for the pressure in the building to drop. The control power of the closer 5 is set.

  Further, the closer 5 also has a role of restricting the blowout panel 3 so as not to open beyond a predetermined level. That is, as shown in FIG. 1 (b), when the pressure in the building drops and the blowout panel 3 is closed after that, the blowout panel 3 is surely closed by the moment of the weight 4 as shown in FIG. The length of the extended arm 51 is set. This prevents the blowout panel 3 from opening too much and closing.

  A plurality of such closers 5 may be provided depending on the size, weight, and the like of the blowout panel 3. Also in this case, when the blowout panel 3 is open, the gas in the building is exhausted to the outside through the gap between the closers 5.

  Then, when the internal pressure of the building rises to a predetermined value or more with the blowout panel 3 closed as shown in FIG. 1A, as shown in FIG. 1B, the moment against the weight 4 is resisted. The blowout panel 3 is opened and the opening 100a is opened. That is, the moment by the weight 4 and the control force of the closer 5 are set such that the blowout panel 3 opens with such an internal pressure. Thereafter, when the gas in the building is exhausted to the outside and the internal pressure of the building drops, as shown in FIG. 1 (c), the control force of the outside air pressure (pressure from the outside of the building) and the moment by the weight 4 and the closer 5 As a result, the blowout panel 3 is slowly closed to close the opening 100a. That is, the moment by the weight 4 and the control force of the closer 5 are set so that the blowout panel 3 is closed by the internal pressure.

  According to the blowout apparatus 1 having such a configuration, as shown in FIG. 1A, the blowout panel 3 is normally closed and the gas inside the building is not released to the outside. When the internal pressure of the building rises to a predetermined value or more due to an accident or the like, as shown in FIG. 1B, the blowout panel 3 is opened by the internal pressure against the moment by the weight 4 and the opening 100a is opened. The gas in the building is exhausted from the opening 100a. As a result, when the internal pressure of the building drops, as shown in FIG. 1C, the blowout panel 3 is closed by a moment or the like due to the weight 4, and the opening 100a is closed again as shown in FIG. . Thereafter, when the internal pressure of the building rises again to a predetermined value or more, the operation of opening the blowout panel 3 and opening the opening 100a is repeated as shown in FIG. 1 (b).

  As described above, according to the blowout apparatus 1, even if the blowout panel 3 is opened once and the opening 100a is opened, the weight 4 closes the blowout panel 3 and the opening 100a is closed, and the building is again built. The blowout panel 3 reopens when the internal pressure of the pressure source rises above a predetermined value. 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 blowout panel 3 is automatically closed when the internal pressure of the building drops, not only labor and cost can be reduced, but also it can be continuously used as a blowout device (prepared for the next blowout). It becomes.

  In addition, since the closer 5 is provided to close the blowout panel 3 slowly, gas in the building can be properly and sufficiently exhausted from the opening 100a, and the blowout panel 3 etc. is damaged by being impacted. Can be prevented.

  Furthermore, when the blowout panel 3 is opened, the gas in the building flows upward, so if the blowout panel 3 is disposed vertically on the outer wall 100 or the like and the gas in the building is to flow above the building It is effective (when you do not want to flow downward).

  On the other hand, since the blowout panel 3 and the closer 5 and the like are disposed in the frame 2 fitted into the opening 100a and unitized, the blowout apparatus can be easily and quickly fitted by fitting the frame 2 into the opening 100a. 1 can be installed. 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. 2 is a side view (partially sectional view) showing a schematic configuration of the blowout apparatus 1 according to this embodiment, (a) shows a state in which the blowout panel 3 is closed, and (b) shows (C) shows a state in which the blowout panel 3 is in the process of closing. 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.

  In this embodiment, the weight 4 is composed of a plurality of small weights 43 and 44, and the first small weight 43 is fixed to the free ends of the support bars 41 and 42. Further, the plurality of second small weights 44 are attachable to the first small weights 43, respectively, and the second small weights 44 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 43 only. Here, as a method of attaching the second small weight 44, any method such as fastening with a bolt or gripping with a clamp may be used.

  According to such an embodiment, since the magnitude of the moment by the weight 4 is adjustable, the weight and size of the blowout panel 3 or a predetermined value of the internal pressure of the building (the internal pressure that the blowout panel 3 should open) Even when such a change occurs, the blowout panel 3 can be properly opened and closed by adjusting to an appropriate moment. 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
FIG. 3 is a side view (partially sectional view) showing a schematic configuration of the blowout apparatus 1 according to this embodiment, (a) shows a state in which the blowout panel 3 is closed, and (b) shows (C) shows a state in which the blowout panel 3 is in the process of closing. In this embodiment, the configuration is different from that of the first embodiment in that the gas in the building flows downward when the blowout panel 3 is opened, and the same reference numerals are given to the same configuration as the first embodiment. The explanation is omitted.

  In this embodiment, the blowout panel 3 is rotatably disposed about the upper side (upper end edge) as a horizontal axis so that the gas in the building flows downward when the blowout panel 3 is opened. It has become. That is, the rotating shaft 31 is disposed on the frame 2 so as to be rotatable about the upper side of the frame 2 as a horizontal axis, and the blowout panel 3 is opened 100a by rotating the rotating shaft 31 about the horizontal axis. Close and open Under the present circumstances, as shown to Fig.3 (a), in the state which the blowout panel 3 closed, it arrange | positions so that the plate surface may be extended in the up-down direction along the outer surface of the outer wall 100. As shown in FIG. Further, as shown in FIG. 2 (b), when the blowout panel 3 is open, the lower side of the opening 100a is largely released so that the gas in the building flows downward. Thus, the blowout panel 3 is in the form of a half-opened window that rotates with the upper side portion as the horizontal axis.

  The weight 4 is provided on the free end (lower) side of the inner surface (inner side of the building) of the blowout panel 3. In the closer 5, one end 51 a of the arm 51 is rotatably connected to the lower horizontal plate of the frame 2, and the other end 51 b of the arm 51 is rotatably connected to the lower surface of the blowout panel 3 It is done. Here, the moment by the weight 4 and the magnitude of the control force of the closer 5 are set in the same way as in the first embodiment.

  According to such an embodiment, when the blowout panel 3 is opened, the gas in the building flows downward, so the blowout panel 3 is disposed vertically on the outer wall 100 or the like so that the gas in the building can be removed. It is effective when you want to flow below the building. Here, the weight 4 is provided on the inner surface of the blowout panel 3 but may be provided on the outer surface of the blowout panel 3 and, similarly to the first embodiment, the weight 4 via the support bars 41 and 42. May be provided.

Embodiment 4
FIG. 4 is a side view (partially sectional view) showing a schematic configuration of the blowout apparatus 1 according to this embodiment, (a) shows a state in which the blowout panel 3 is closed, and (b) shows (C) shows a state in which the blowout panel 3 is in the process of closing. In this embodiment, the blowout panel 3 is disposed so that the plate surface extends in the lateral direction and can be pivoted around one end edge as a horizontal axis, and when the blowout panel 3 is opened, the gas in the building can be used outdoors. The configuration is different from that of the first embodiment in that it flows in the direction, and the same reference numerals are given to the same configuration as the first embodiment, and the description thereof is omitted. Here, the case where the blowout apparatus 1 is installed on a horizontal ceiling (top plate) 110 of a building will be described, and the ceiling 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 rotary shaft 31 of the blowout panel 3 is disposed on the frame 2 so as to be rotatable about one side of the frame 2 as a horizontal axis. The blowout panel 3 closes and opens the opening 110 a by rotating the rotating shaft 31 about the horizontal axis. Under the present circumstances, as shown to Fig.4 (a), in the state which the blowout panel 3 closed, the board | substrate surface is arrange | positioned so that it may be extended laterally along the outer surface of the ceiling 110. As shown in FIG. Also, as shown in FIG. 4 (b), when the blowout panel 3 is open to the outside of the building, the other side of the opening 110a (anti-rotational shaft 31 side) is largely released and the gas in the building is It is designed to flow upwards outside the building.

  As in the first embodiment, the weight 4 is provided on the inner surface side (inner side of the building) of the blowout panel 3 on the rotary shaft 31 side. In the closer 5, one end 51 a of the arm 51 is rotatably connected to a plate on the other side of the frame 2 (the side opposite to the rotation shaft 31), and the other end 51 b of the arm 51 is a blowout panel 3. It is rotatably connected to the free end side of the inner surface of the. Here, the moment by the weight 4 and the magnitude of the control force of the closer 5 are set in the same way as in the first embodiment.

  According to such an embodiment, when the blowout panel 3 is opened, the gas in the building flows upward to the outside of the building, so the blowout panel 3 is disposed horizontally on the ceiling of the building or the like. It is effective when it is desired to flow the gas inside the building to the upper side of the building. Here, although the case where the blowout device 1 is installed on the ceiling 110 of the building has been described, it can be applied to the case of installing on the floor plate of the building, etc. In this case, the gas inside the building is below the building outdoor. Go to the head.

Fifth Embodiment
FIG. 5 is a side view (partially sectional view) showing this embodiment, wherein (a) shows the blowout panel 3 in a closed state, and (b) shows the blowout panel 3 in an open state. (C) is a figure which shows the state in the middle of the blowout panel 3 closing. This embodiment is a combination of the first embodiment and the third embodiment, and the description of the same configuration as the first embodiment will be omitted by attaching the same reference numerals.

  A support beam 6 extending in the horizontal direction is provided at the central portion of the opening 100a, and the blowout apparatus 1 according to the first embodiment is installed below the opening 100a bordering the support beam 6, the opening 100a The blowout apparatus 1 according to the third embodiment is installed on the upper side of the. At that time, one end 51 a of the arm 51 of the lower blowout device 1 and one end 51 a of the arm 51 of the upper blowout device 1 are rotatably connected to the support beam 6. Further, a packing 61 for a beam is disposed on the end face of the support beam 6 on the blowout panel 3 side (the outer surface side of the outer wall 100), and airtightness is ensured in a state where the blowout panel 3 is closed. .

  According to this embodiment, when the internal pressure of the building rises above a predetermined value, as shown in FIG. 5 (b), the upper and lower blowout panels 3 open like a double door, and the opening 100a is opened. When the internal pressure is lowered, as shown in FIG. 5C, the upper and lower blowout panels 3 are closed by the moment of each weight 4 to close the opening 100a. As described above, since the opening 100a is opened and closed by the two upper and lower blowout panels 3, the small blowout panel 3 can be used for the large opening 100a, and the installation and maintenance can be enhanced. Become. In addition, when the upper and lower blowout panels 3 are opened, as shown in FIG. 5 (b), the gas from the lower side of the opening 100a and the air flow from the upper side cause the gas in the building to be horizontal to the building. It is effective when you want to flow gas to the side of the building.

Sixth Embodiment
FIG. 6 is a side view (partially sectional view) showing this embodiment, where (a) shows the blowout panel 3 in a closed state, and (b) shows the blowout panel 3 in an open state. (C) is a figure which shows the state in the middle of the blowout panel 3 closing. In this embodiment, the configuration is different from that of the first embodiment in that the blowout panel 3 is pivoted by being guided and supported by the guide rails 7, and the same reference numerals are given to the same configuration as the first embodiment. The explanation is omitted.

  The guide rail 7 is disposed in the frame 2 so as to extend vertically in a long body. Further, one end portion 72 of the rod-like connection bar 71 is slidably engaged with and connected to the guide rail 7, and the other end portion 73 is rotatably connected to the inner surface of the blowout panel 3. Here, depending on the size of the blowout panel 3 or the like, a plurality of sets of guide rails 7 and connection bars 71 may be provided.

  In this embodiment, as shown in FIG. 6 (a) in the normal state, the blowout panel 3 is closed, and one end 72 of the connecting bar 71 is located on the lower end side of the guide rail 7. Then, when the internal pressure of the building rises to a predetermined value or more due to an accident or the like, as shown in FIG. 6B, the blowout panel 3 is opened by the internal pressure against the moment by the weight 4 and the opening 100a is opened. The gas in the building is exhausted from the opening 100a. At this time, one end portion 72 of the connection bar 71 is guided by the guide rail 7 and ascends. In other words, the blowout panel 3 is opened by being guided and supported by the guide rail 7.

  As a result, when the internal pressure of the building drops, the blowout panel 3 is closed by a moment or the like due to the weight 4 as shown in FIG. 6 (c). At this time, one end portion 72 of the connection bar 71 is guided by the guide rail 7 and descends. In other words, the blowout panel 3 is closed by being guided and supported by the guide rail 7.

  According to such an embodiment, since the blowout panel 3 is pivoted by being guided and supported by the guide rail 7, the blowout panel 3 can be stably opened and closed. Further, since the one end portion 72 of the connection bar 71 slides and descends with respect to the guide rail 7, it is possible to slowly close the blowout panel 3 in the same manner as the closer 5. Furthermore, by restricting the sliding range (engagement range with the guide rail 7) of the one end portion 72 of the connecting bar 71, similarly to the closer 5, the blowout panel 3 is limited so as not to open more than a predetermined level. Is possible.

  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, in the above embodiment, the blowout panel 3 is rotated about the rotation shaft 31. However, the hinge attached to the frame 2 or the like rotates the blowout panel 3 You may Furthermore, although the closer 5 having the same configuration as the door closer is used, a hinge closer may be used. Moreover, although the weight 4 which is a separate body is provided with respect to the blowout panel 3, the weight 4 is integrally provided in the blowout panel 3 (The shape and weight of the blowout panel 3 so that a predetermined moment acts. May be set).

1 blowout device 2 frame 21 packing 3 blowout panel 31 rotation axis (horizontal axis)
4 Weight
43 1st small weight 44 2nd small weight 5 closer 51 arm 100 building exterior wall 100a opening

Claims (7)

A blowout panel which closes the opening formed in the building of the nuclear power generation facility so as to open and close freely by rotating the plate shape with one end edge as a horizontal axis;
A weight portion giving a moment in a closing direction of the blowout panel;
When the internal pressure of the building rises above a predetermined value, the blowout panel opens against the moment and the opening is opened, and when the internal pressure of the building drops, the blowout panel Closes and the opening is blocked,
A blowout device characterized by And a closer for slowly closing the blowout panel when the internal pressure of the building drops and the blowout panel closes.
The blowout device according to claim 1, characterized in that: A frame fitted into the opening;
The blowout panel 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 blowout panel has a plate surface extending in the vertical direction and is rotatably disposed about a lower end edge as a horizontal axis, and when the blowout panel is opened, gas in the building flows upward.
The blowout device according to any one of claims 1 to 4, characterized in that. The blowout panel has a plate surface extending in the vertical direction and is rotatably disposed about the upper end edge as a horizontal axis, and when the blowout panel is opened, gas in the building flows downward.
The blowout device according to any one of claims 1 to 4, characterized in that. The blowout panel is disposed so that the plate surface extends in the lateral direction and pivots at one end edge as a horizontal axis, and when the blowout panel is opened, the gas in the building flows into the outdoor.
The blowout device according to any one of claims 1 to 4, characterized in that.

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