JP2014199144A - Pipe conduit cutoff device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To block an introduction duct powerlessly and without an artificial operation at the invasion of Tsunami.SOLUTION: A pipe conduit cutoff device 1 is arranged at a vertical part of an introduction duct 2 arranged in a building, and blocks the introduction duct 2 at the invasion of Tsunami. In a normal time, a ventilation plate 8 which is positioned so as to block the inside of the introduction duct 2 but makes air flow therethrough, and a water block plate 6 integrally arranged at the ventilation plate 8, and located in a position which does not block a flow of air passing through the ventilation plate 8 as much as possible are integrally arranged in the introduction duct 2 so as to be turnable at a required angle. A counter weight 9 which acts so that the ventilation plate 8 is not rotated by ventilation is arranged. At emergency, the ventilation plate 8 and the water block plate 6 are integrally rotated while withstanding an operation force of the counter weight 9 generated by a collision of sea water to the ventilation plate 8 at the invasion of the sea water into the introduction duct 2, and the inside of the introduction duct 2 is blocked. By this constitution, at the invasion of Tsunami, an air conditioning duct can be surely blocked powerlessly and without an artificial operation by utilizing that a water flow acts on the ventilation plate.

Description

  The present invention, for example, is a pipe stop water that prevents an intrusion of a tsunami into a room by closing an air-conditioning duct provided in a fixed structure without power and without manual operation when a tsunami strikes. It relates to the device.

  In order to air-condition each room in a fixed structure (hereinafter referred to as a building), outside air taken in from the outside air inlet is supplied to each room via the introduction duct, while indoor exhaust is supplied via the exhaust duct. An air conditioner that discharges from an exhaust port is disclosed (for example, see Patent Document 1).

  When the building equipped with the air conditioner is a sturdy building such as a reinforced concrete structure, even if the building is not swept away by the tsunami when the tsunami hits it, it can be introduced from the outside air inlet and exhaust port provided in the building. Seawater intrudes into each room through the duct, increasing the damage.

JP 2004-19966 A

  The problem to be solved by the present invention is that, when a tsunami strikes, even if the building is sturdy and not swept away by the tsunami, seawater enters the room through the introduction duct and the exhaust duct and the damage increases. Is a point.

  In order to solve the above problem, the present invention, when a tsunami strikes, air-conditioning ducts such as introduction ducts and exhaust ducts are closed without power and without manual operation, so that seawater does not enter the room. It was made for the purpose of doing so.

The present invention
It is installed in the vertical part of an air-conditioning duct provided in a building, and is a pipe water stop device that closes the air-conditioning duct when a tsunami strikes,
Normally, the ventilation plate is arranged so as to block the flow of fluid through the air conditioning duct, but supplies air or exhaust, and is provided integrally with the ventilation plate, and the flow of air supply or exhaust passing through the ventilation plate is reduced. Provided with a counterweight that is installed in the air-conditioning duct so that the water shielding plate located at a position that does not obstruct as much as possible can freely rotate at a required angle, and that the ventilation plate does not rotate by ventilation,
In the event of an emergency, when seawater enters the air conditioning duct, the seawater collides with the ventilation plate and rotates the ventilation plate and the water shielding plate together against the acting force of the counterweight. The main feature is that it is blocked.

  In the above-mentioned present invention installed in the vertical part of the air conditioning duct, the supply air or the exhaust gas normally flows through the ventilation plate located so as to block the flow of the fluid passing through the air conditioning duct. At this time, due to the action of the counterweight, the ventilation plate is not rotated by the flow of air supply or exhaust.

  On the other hand, when seawater enters the air conditioning duct in an emergency, the seawater collides with the ventilation plate located so as to block the flow of fluid through the air conditioning duct, and the ventilation plate resists the acting force of the counterweight. Rotate the water shielding plate together to block the inside of the air conditioning duct and prevent the intrusion of seawater.

  In the present invention, if a damper is installed on the counterweight, even when the building vibrates due to an earthquake or the like, the water shielding plate does not rotate to block the air conditioning duct.

  In the present invention, when a flow straightening cover is arranged upstream of the water shielding plate so that the flow of air supply or exhaust air does not act on the water shielding plate at all times, the pressure loss of the gas flowing in the air conditioning duct Can be reduced.

  Further, in the present invention, when an arc-shaped water guide plate is provided along the upstream wall surface of the ventilation plate, and a water collecting tank is provided in the ventilation plate portion of the seawater falling position led to the water guide plate. The air-conditioning duct can be closed by rotating the water shielding plate even with a small amount of falling water.

  In the present invention, when a tsunami strikes, the airflow from the vertically upward to the vertically downward acts on the ventilation plate, so that the air-conditioning duct is securely closed without power and without human operation. Can do.

It is a figure explaining the installation aspect of the pipe line water stop apparatus of this invention. It is the figure which showed the 1st example of the pipe water stop apparatus of this invention of a normal time, (a) is a center longitudinal cross-sectional view, (b) is an arrow AA figure of (a) figure, (c). (A) BB sectional drawing of a figure, (d) is an external view. It is the figure which showed the 1st example of the pipe water stop apparatus of this invention at the time of flooding, (a) is a center longitudinal cross-sectional view, (b) is an external view. (A)-(c) is the figure which showed an example of the ventilation plate which comprises the pipe water stop apparatus of this invention. It is the figure which showed the 2nd example of the pipe water stop apparatus of this invention of normal time, (a) is a center longitudinal cross-sectional view, (b) is AA sectional drawing of (a) figure, (c) is (A) It is BB sectional drawing of a figure. FIG. 3 is an external view showing an example in which the counterweight in the first example of FIG. 2 is held by a holding member. An example in which the counterweight in the first example of FIG. 2 is installed at a position facing the water shielding plate via the rotation shaft, and the wind pressure acting on the water shielding plate at normal times is held only by the supporting force of the holding member. FIG. It is the figure which showed the 3rd example of the pipe water stop apparatus of this invention of normal time, (a) is a center longitudinal cross-sectional view, (b) is AA sectional drawing of (a) figure. It is the figure which showed the 4th example of the pipe water stop apparatus of this invention of the normal time, (a) is a center longitudinal cross-sectional view, (b) is AA sectional drawing of (a) figure.

  The purpose of the present invention is to prevent the intrusion of seawater into the room in the vertical part of the air conditioning duct by closing the air conditioning duct without power and without manual operation when a tsunami strikes. It was realized by installing the water shield and the water shield so that the required angle can be freely rotated.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to FIGS.
1-3 is a figure explaining the 1st example of the pipe water stop apparatus of this invention, FIG. 1 shows an installation aspect, FIG. 2 shows normal time, FIG. 3 shows the time of flooding.

  In the pipe water stop device 1 of the present invention, when a tsunami strikes, even if the building is not washed away by the tsunami, seawater enters the room 3 from the outside air inlet, for example, installed in the building through the introduction duct 2. In order to prevent this, as shown in FIG. Although FIG. 1 shows an example in which the pipe water stop device 1 is provided outside the room, it may be provided in the room 3.

  Reference numeral 4 denotes a cylinder having connecting flanges 4a attached to both ends, which are attached to the vertical portion of the introduction duct 2 using the flanges 4a at both ends. In the first example shown in FIG. 2 and FIG. 3, the inside of the cylindrical body 4 flows through the cylindrical body 4 through a door stop 5 having a rectangular opening 5 a in the central portion, for example, in the middle in the longitudinal direction. Inclined with respect to the fluid flow direction. In order to reduce the pressure loss of the air flowing through the cylindrical body 4 at the time of attachment, the opening 5a of the door stop 5 and the rectangular opening 4aa provided at the center of the flange 4a are made to coincide with each other when viewed from a plane. It is desirable to keep it.

  Reference numeral 6 denotes a water shielding plate disposed close to the inner wall surface 4b of the cylindrical body 4 on the upstream side of the door stop 5 so as not to obstruct air flow at all times. In the event of an emergency, the water shielding plate 6 closes the opening 5a of the door stop 5 and prevents the intrusion of seawater into the room 3 so that the downstream end thereof is a pivotal fulcrum and the flow direction of the fluid It is installed on the outer periphery of the door stop 5 so that it can freely rotate at a required angle. Reference numeral 7 denotes a watertight rubber attached to the door-side surface of the water shielding plate 6.

  Reference numeral 8 denotes a ventilation plate in which a plurality of inclined members 8b are arranged at predetermined intervals inside the frame member 8a, and is formed slightly smaller than the opening 4aa of the flange 4a. The ventilation plate 8 is integrally attached at right angles to the water shielding plate 6 in the vicinity of the rotation fulcrum of the water shielding plate 6 so as to be positioned in the opening 5 a of the door stop 5.

  Reference numeral 9 denotes counterweights installed at both end portions of the rotating shaft 10 that serve as a pivotal support point of the water shielding plate 6 extending to the outside of the cylindrical body 4. The plate 6 acts so as not to block the inside of the cylinder 4.

  11 is a damper installed on the counterweight 9. For example, when the building vibrates due to an earthquake or a civil engineering work in the vicinity of the building, the water shielding plate 6 rotates to block the introduction duct 2. It works so that there is no.

  The pipe water stop device 1 of the present invention has the above-described configuration, and normally, as shown in FIG. 2, the ventilation plate 8 is positioned so as to block the inside of the cylindrical body 4 connected to the introduction duct 1. The air flowing through the introduction duct 2 flows to introduce fresh air into the room 3. Further, the water shielding plate 6 is located at a close position along the inner wall surface 4b of the cylindrical body 4 so as not to obstruct the air flow as much as possible.

  In the case of the above configuration, even if the building vibrates, the water shielding plate 6 and the ventilation plate 8 are not rotated by the action of the damper 11 to block the cylinder 4.

  On the other hand, when seawater enters the introduction duct 2 in an emergency, as shown in FIG. 3, the seawater collides with the inclined member 8b of the ventilation plate 8, and resists the counterweight 9 and the damper 11 by the collision force. Then, the ventilation plate 8 and the water shielding plate 6 are rotated together to block the inside of the cylindrical body 4 with the water shielding plate 6. During this closing, the damper 11 relaxes (absorbs) the impact force when the water shielding plate 6 collides with the door stop 5.

  Therefore, the ventilation plate 8 always flows downstream without obstructing the air flow, and receives the seawater that has entered in an emergency and rotates the water shielding plate 6 against the counterweight 9 and the damper 11. Any configuration can be used as long as it can.

  For example, in the example shown in FIGS. 2, 3 and 4A, a flat inclined member 8b is inclined with respect to the fluid flow direction, and FIG. 4B is a curved shape. 4 (c) shows an S-shaped inclined member 8b inclined with respect to the fluid flow direction.

  Further, in order to mitigate the impact force generated when the cylindrical body 4 is closed due to the rotation of the water shielding plate 6, the shield that rotates from the position of the water shielding plate 6 at a normal time to the position where the inside of the cylindrical body 4 is closed in an emergency. It is preferable to set the movable rotation angle θ (see FIG. 2A) of the water plate 6 to 90 ° or less.

  The present invention is not limited to the above examples, and it goes without saying that the embodiments may be changed as appropriate within the scope of the technical idea described in each claim.

  For example, FIG. 5 is an example in which the rectifying cover 12 is disposed on the upstream side of the water shielding plate 6 so that the air flow at any time does not act on the water shielding plate 6. In this case, it is possible to reduce the pressure loss of the air flowing in the introduction duct 2 at the normal time, and accordingly, the counterweight 9 can be reduced in size. In the example of FIG. 5, the rectifying cover 12 also serves as the door stop 4 of the example shown in FIGS. 2 and 3.

  Further, FIG. 6 shows an example in which the position of the water shielding plate 6 in a normal state is held by a holding member 15 that is released only when a predetermined load or more is applied to the ventilation plate 8, for example, a magnet catch or a ball catch. It is. In this case, the counterweight 9 can be further reduced in size. The installation position of the holding member 15 in this case is desirably provided outside the cylindrical body 4 in consideration of maintainability. FIG. 6 shows what holds the counterweight 9 in the first example shown in FIG.

  On the other hand, FIG. 7 shows that the counterweight 9 in the first example is installed at a position facing the water shielding plate 6 via the rotating shaft 10, and the water shielding plate 6 in a normal state is only by the supporting force of the holding member 15. This is an example in which the wind pressure acting on is maintained. In this case, since the moment of inertia of the water shielding plate 6 and the moment of inertia of the counterweight 9 are canceled out, the inertial force generated by the earthquake motion rotates the movable part including the water shielding plate 6 and the counterweight 9. It does not act as a moment. Therefore, it is not necessary to maintain the position of the water shielding plate 6 in the normal state using the damper 11.

  Also in the case of FIG. 7, a moment is generated in the ventilation plate 8 to rotate the movable part due to the inertial force due to the earthquake motion. However, since the ventilation plate 8 is lighter than the water shielding plate 6, The moment can be easily held by force.

  Since the holding member 15 is for holding the position of the water shielding plate 6 in normal times, the rotation of the water shielding plate 6 when closing the opening 5a of the door stop 5 in the case of FIG. You may use together with the damper 11 aiming at reducing the speed.

  8 and FIG. 3, in the example shown in FIGS. 2 and 3, an arc-shaped water guide plate 13 is provided along the upstream wall surface of the ventilation plate 8, and the seawater falling position of the seawater led to the water guide plate 13 is provided. This is an example in which a water collecting basin 14 is provided in the ventilation plate 8 portion. FIG. 9 shows an example in which, in the example shown in FIG. 5, a water guide plate 13 is provided in the rectifying cover 12, and a water collecting rod 14 is provided in the ventilation plate 8 portion of the seawater falling position led to the water guide plate 13. It is. In these cases, the inside of the cylinder 4 can be closed by rotating the water shielding plate 6 even with a small amount of water falling.

  In FIGS. 5, 8, and 9, the watertight rubber 7, the counterweight 9, and the damper 11 are omitted. In the examples shown in FIGS. 5, 8, and 9, the opening 4 aa provided in the flange 4 a of the cylinder 4 has the same circular shape as the inner peripheral surface of the cylinder 4.

  Moreover, although the example of FIGS. 1-9 demonstrates the case where the pipe water stop apparatus 1 of this invention is attached to the introduction duct 2, it cannot be overemphasized that you may attach to an exhaust duct.

DESCRIPTION OF SYMBOLS 1 Pipe line water stop apparatus 2 Introductory duct 4 Cylindrical body 6 Water shielding board 8 Ventilation board 9 Counterweight 11 Damper 12 Rectification cover 13 Water guide plate 14 Catchment basin 15 Holding member

Claims (8)

It is installed in the vertical part of an air conditioning duct provided in a fixed structure, and is a pipe water stop device that closes the air conditioning duct when a tsunami strikes,
Normally, it is located so as to block the inside of the air conditioning duct, but the ventilation plate that flows air supply or exhaust, and the ventilation plate that is provided integrally with the ventilation plate, are positioned so as not to obstruct the flow of air supply or exhaust that passes through the ventilation plate as much as possible. Provided with a counterweight that is installed in the air-conditioning duct so that the rotation of the required angle can be freely performed integrally with the positioned water shielding plate, and that the ventilation plate does not rotate by ventilation,
In the event of an emergency, when seawater enters the air conditioning duct, the seawater collides with the ventilation plate and rotates the ventilation plate and the water shielding plate together against the acting force of the counterweight. A pipe water stop device characterized by being blocked.   Even when the fixed structure vibrates, the water shielding plate does not rotate and closes the air conditioning duct. In an emergency, when the water shielding plate rotates and closes the air conditioning duct by seawater entering the air conditioning duct. The pipe water stop device according to claim 1, wherein a damper is installed on the counterweight so as to alleviate the impact force.   Even when the fixed structure vibrates, it keeps the position of the water shielding plate in the normal state and prevents it from entering the air conditioning duct in an emergency so that the air shielding plate will not rotate and block the air conditioning duct. The pipe water stop device according to claim 1, further comprising a holding member that releases the holding by collision of the seawater with the ventilation plate.   The pipe water stop device according to any one of claims 1 to 3, wherein the ventilation plate has a rectangular shape that blocks the air conditioning duct.   The conduit according to any one of claims 1 to 4, wherein a rectifying cover is arranged on the upstream side of the water shielding plate so that a flow of air supply or exhaust at a normal time does not act on the water shielding plate. Water stop device.   2. An arc-shaped water guide plate is provided along a wall surface on the upstream side of the air flow plate, and a water collecting basin is provided in the air flow plate portion of the seawater falling position led to the water guide plate. The pipe water stop apparatus in any one of -5.   6. The pipe water stop device according to claim 5, wherein a water guide plate is provided in the rectifying cover, and a water collecting basin is provided in the ventilation plate portion of the seawater falling position led to the water guide plate.   The pipe water stop device according to any one of claims 1 to 7, wherein a movable rotation angle of the water shielding plate is 90 ° or less.

Images