JP2014525129A - Inundation protection device - Google Patents

Abstract

  The present invention relates to an inundation protection device capable of protecting an electric switch box from inundation, and is installed on a predetermined installation surface, and an electric switch box for controlling a power source supplied to electric equipment, It is installed so as to be coupled and fixed to the electric switch box in a state where the infiltration prevention cover whose bottom surface is opened is covered, and it can act while maintaining air pressure between the electric switch box and the infiltration prevention cover. When the lower end of the infiltration prevention cover is immersed in the water that spills during flooding, internal pressure is applied while the inside of the infiltration prevention cover is sealed with air. Since the interior space of the prevention cover is prevented from being filled with water any more, it is possible to prevent the electric switch box from being flooded.

Description

  The present invention relates to an inundation protection device, and more particularly, to an inundation protection device that can be installed on a predetermined mounting surface and can protect an electrical switch box (switch box) that controls the power supply of electrical equipment from inundation. is there.

  Examples of objects corresponding to the electric switch box applied to the present invention include, for example, electric equipment including electric rotating machines and manual or mechanical electric switches, magnetic contacts, circuit breakers, Various controller kits, control computer cubicles, local control centers, switch gears, electrical equipment conductor connections including transformers and electric rotating machines, and boxes thereof In addition, inundated fragile objects and electrical equipment that are difficult to become submerged are also included.

  In general, an electrical switch box is usually configured in an electrical facility, and power is supplied to or disconnected from the electrical facility through the electrical switch box, and electrical insulation or shielding is provided at the connection with the electrical cable. It is essential. Grounding and short-circuiting during flooding will inevitably occur, making it impossible to operate and operate electrical equipment continuously. Even if waterproofing is applied by applying resin to the wire connection part or it is installed with a waterproof switch, there is a limit to visually identifying that the insulation of the connection part will deteriorate or be damaged over time. Also, it was almost impossible or not easy to test whether it was flooded in a connected state.

  Such an electric switch box is usually fixedly installed on a wall or a pillar of a building, and is large like a control computer cubicle, a transformer, a local control center or a switchgear. Is installed on a cement (or concrete) pedestal in a self-supporting manner.

  The electrical switch box installed in this way has a drawback that it is fatally exposed to water. In other words, when a building is flooded, an electrical switch box that is fixedly installed on a wall or pedestal can only be flooded with water that rises, and electricity is energized through the water due to such flooding. Therefore, grounding or short-circuiting inevitably occurs, and electric equipment can not be operated and operated continuously, and there is a risk of electric shock and fire.

  Thus, there is a completely sealed waterproof switch in electrical equipment, but as time goes on, there is a limit to the method for testing whether or not it will be submerged during operation. That is, it is determined whether or not the water will be flooded only during operation, after an accident such as a flood or tsunami, or in the case of an outage separation test due to planned outage repair (Overhaul). There are numerous such vulnerable areas in a single unit power plant, and even with a single inundation, the time required for recovery is greatly increased, and intrusions in a very short time like a tsunami. In an emergency situation, it takes only a very long time to take measures to protect areas that are vulnerable to flooding and to complete the restoration of flooded areas.

  If the time taken to find and repair the cause after an accident becomes longer, in the case of nuclear power plants, the delay in supplying reactor cooling water will increase, resulting in fatal damage such as damage to the TEPCO's Fukushima nuclear power plant due to the Great East Japan Earthquake Tsunami. Environmental destruction is unavoidable. It is the greatest object of the present invention to reduce or eliminate the need for restoration of submerged electrical equipment.

  When such an electrical switch box is flooded, it takes a lot of time and manpower to restore the electrical switch box in addition to the above-mentioned accidents related to electricity, and secondary economic losses due to power outages during the restoration period. It can be seen from the derivation of the damage caused by the nuclear power plant in Japan and the industrial damage caused by restricted power transmission.

  Accordingly, the present invention has been devised to solve the problems of the prior art as described above, and a water-inhibiting cover is formed on the electric switch box so that the water-inhibiting cover can be used even when water is drowned. Even if the lower part is open, an air chamber is formed in the inside of the infiltration prevention cover due to the difference in specific gravity between water and air, so that the electric equipment including the electric switch box is not immersed in water. It is an object of the present invention to provide a flood protection device that can prevent flooding of electrical equipment including a box in advance.

  The above-described object is to provide an electrical switch box that is installed in a predetermined place and controls the power supply of electrical equipment, and the electrical switch box is covered with a flood prevention cover that is open only on the lower surface. A submersion protection device, wherein a space is formed between the electrical switch box and the submersion prevention cover so that air pressure can be maintained and acted on. Achieved.

  The inundation prevention cover of the present invention is installed so as to be able to move up and down so that the switch operator can perform the operation action and the maintenance activities of the maintenance personnel, and the infiltration prevention cover does not float upward due to the buoyancy of the air chamber. Thus, it is possible to have an electrical power or mechanical device that has a mechanical latch and is useful for the vertical movement of the water-proof cover.

  The flood prevention cover is provided with a hot air discharge hole for discharging the internal heat, and the hot air discharge hole is provided with a hot air discharge induction pipe or a hot air discharge induction hose installed inside the flood prevention cover. On the other hand, an air supply pipe capable of replenishing air inside the flood prevention cover may be connected to the lowermost part of the flood prevention cover.

  In addition, a mechanical holding device (a jacket holding latch) can be attached so that the flood prevention cover can be held up as needed (upper state), When the flood prevention cover moves up and down, it has a guide frame and a guide hole through which the guide frame penetrates so that stable up and down movement can be performed without touching or colliding with the electric switch box. A flange portion may be configured together with the upper and lower driving frames outside the water-inhibiting cover.

  Mount the roller wheel inside the flood prevention cover so that the components of the flood prevention cover do not touch the electrical switch box or collide with each other even if the guide frame of the flood prevention cover is bent or the fixing means is released. You can also.

  The guide frame (Guide frame) and its guide hole can connect or replace gears, sprockets, frames, chains, manual and electric drive devices, etc., and the vertical drive frame is located at the position of this guide frame. It is also possible to form a structure integrated with the guide frame so that the flood prevention cover is balanced.

  According to the inundation protection device of the present invention, since the inundation prevention cover is coupled and fixed in a state where the electric switch box is covered from the top to the bottom, when the lower end portion of the infiltration prevention cover is submerged by the water spilled during the inundation, While the inside of the prevention cover is sealed with air, internal pressure is applied, which prevents water from entering the interior space of the infiltration prevention cover any more. No matter how high it is, it does not become higher than the air discharge hole level, so that the electric switch box can be prevented from being flooded.

It is the block diagram which showed the electric switch box by this invention. It is the figure which showed the infiltration prevention cover installed in the electric switch box by this invention. It is the figure which showed the flooding prevention state of the electric switch box in which the flooding protection cover by this invention was installed. FIG. 3 is a separation view of a configuration provided at the time of a water immersion test of an electric switch box according to the present invention. 4 is a diagram illustrating a state in which a switch box support for mounting the switch box on the upper side is installed in a submergence test of the electric switch box according to the present invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a block diagram illustrating that an electric switch box according to the present invention is installed in a wall or a column with an appropriate distance from the ground without being heavy.

  As shown in FIG. 1, the electric switch box (10) has a rectangular box shape with a switch structure formed on the front surface, and a power cable for power supply and a power cable pipe (12) are connected to the lower side of the box. A long hole type attachment hole (11) adapted to be fixed by a fixing means (60) to be described later is formed in the lower bottom surface of the switch box connected to the power cable pipe (12).

  In the present embodiment, the power cable pipe (12) and the mounting hole (11) are illustrated as an example in the lower side of the electric switch box (10). However, if necessary, the electric switch box (10) It can also be configured on itself and on the bottom or other side of the switch box support (65).

  On the other hand, the electric power cable pipe (12) installed in the electric switch box (10) has a submergence test water tank (40) positioned at the bottom of the electric switch box (10) when the electric switch box (10) is subjected to a submersion test. It is preferable that one side be installed with the one side bent upward. Such an immersion test water tank (40) is preferably manufactured in a form that allows horizontal movement and vertical position adjustment so that water supply and drainage can be easily performed so that it can be used in a plurality of locations.

  A latch (30) in the form of a normal hook is rotatably attached to the electrical switch box (10), and the latch (30) is connected to a water-prevention cover (20), which will be described later. By connecting to the flange portion (21), the electric switch box (10) and the infiltration prevention cover (20) are integrally coupled and fixed. Such latches (30) are preferably installed on all four sides of the electrical switch box (10), but in some cases, the latches (30) may be installed only on both sides arranged on the same line.

  Further, such a latch (30) may be configured in a water-infiltration prevention cover (20) described later, unlike the embodiment described above.

  FIG. 2 is a view showing a flood prevention cover installed in the electric switch box according to the present invention.

  As shown in FIG. 2, the infiltration prevention cover (20) is formed so that the lower surface thereof is opened, and is installed so as to cover the electric switch box (10) from the top to the bottom, and is attached to the electric switch box (10). It is fixedly coupled to the electrical switch box (10) by an installed latch (30). Such a flood prevention cover (20) is normally held in a state of being coupled to the electrical switch box (10).

  The infiltration prevention cover (20) installed in this way has an air chamber, that is, a separated space (S), so that an internal pressure can act between the electric switch box (10). Such a space (S) is preferably formed uniformly on the front inner side surface of the water-infiltration prevention cover (20) as shown in FIG. Further, even if a guide frame (22) of the water-preventing cover (20), which will be described later, is bent or the fixing means (60) is released, the structure of the water-preventing cover (20) is provided inside the water-preventing cover (20). It is preferable that the roller wheel (26) is attached to the inside of the water-proofing cover (20) so that the product does not touch the electric switch box (10) or collide with each other to be damaged.

  Further, an outwardly projecting flange portion (21) is formed along the outer peripheral edge portion on the outer surface of the flood prevention cover (20), and vertical guide frames (22) are formed on both sides of the flange portion (21). ) (Shown in FIG. 4) is installed in a protruding manner. This guide frame (22) has a primary purpose of preventing horizontal shaking during the up-and-down movement of the infiltration prevention cover (20), and the protection cage (50) can be easily attached to the infiltration prevention cover (20). It is also preferable that it is installed longer than the flood prevention cover (20), that is, longer than the flood prevention cover (20) so as to ensure a sufficient vertical movement distance.

  In addition, a hot air discharge hole (23) is formed in the lower end portion of the outer surface of the flood prevention cover (20) for discharging the internal heat generated by the heat generated by the electrical equipment to the outside when left for a long time. An air supply pipe (24) for injecting external air into the inside of the infiltration prevention cover (20) and supplementing it for smooth discharge of hot air is under the flange portion (21) of the infiltration prevention cover (20). Can be installed in. The air supply pipe (24) is coupled to a compressed air facility such as a compressor and a compressed air tank, so that the air can be continuously supplemented to the internal space (S) of the flood prevention cover (20).

  At this time, since hot air inside the infiltration prevention cover (20) collects in the upper layer due to the difference in specific gravity, the hot air discharge guiding pipe (25) is inductively coupled from the upper layer to the hot air discharge hole (23). When the hot air is discharged, it is necessary to discharge the hot air first from the upper layer portion inside the flood prevention cover (20). Since the position of the hot air discharge hole (23) is relatively higher than that of the air supply pipe (24), even if the water level outside the flood prevention cover (20) becomes high, the air passing through the air supply pipe (24) If the supply amount becomes excessive, the hot air is discharged first through the hot air discharge hole (23) due to a slight water pressure difference (atmospheric pressure difference under normal conditions).

  On the other hand, the infiltration prevention cover (20) in which the electric switch box (10) is housed has an opening end on the bottom surface of the electric switch box (10) as well as the upper part of the power cable pipe (12) connected thereto. The hot air discharge hole (23) formed in the infiltration prevention cover (20) by being installed so as to completely cover up to one side is the internal space (S) of the infiltration prevention cover (20). It was made to install in the position lower than the electric switch box (10) accommodated in the. This is to prevent the water level in the flood prevention cover (20) from reaching the electrical switch box (10) when flooded. This will be described in detail below.

  The soaking prevention cover (20) configured in this way is mechanically held so that the soaking prevention cover (20) can be kept in the raised state (overcoat state) as necessary. Equipment may be installed.

  FIG. 3 is a view showing a flood prevention state of the electrical switch box provided with the flood protection cover according to the present invention.

  First, after the flood prevention cover (20) is covered from the top to the bottom on an electric switch box (10) fixed to a predetermined wall surface, that is, a wall surface of a building via fixing means (60) described later. The flange portion (21) of the water immersion prevention cover (20) is locked and fixed by the latches (30) installed in the electric switch box (10), so that the electric switch box (10) and the water immersion prevention cover are fixed. (20) is integrally coupled and fixed.

  Of course, at this time, the hot air discharge hole (23) of the infiltration prevention cover (20) is installed at a position lower than the electrical switch box (10) as described above. In such a state, as shown in FIG. 3, when the hot water discharge hole (23) of the flood prevention cover (20) closes as shown in FIG. 3, the flood prevention cover (20) is hermetically sealed. There is air that has not yet been removed from the hot air discharge hole (23) inside the prevention cover (20), and such an air layer causes an internal pressure of atmospheric pressure to act on the inside of the flood prevention cover (20). Thus, even if the water level gradually increases, the water (S) in the water-inhibiting cover (20) cannot be further swollen so that the predetermined water level (electric switch box (10) The position between the lower surface of the gas and the hot air discharge hole (23) is not exceeded.

  Of course, at this time, the infiltration prevention cover (20) is coupled and fixed by the electric switch box (10) and the latch (30), so that even if the buoyancy of water acts, the infiltration prevention cover (20) It will not float on the surface of the water.

  For this reason, the electrical switch box (10) housed at a predetermined height inside the flood prevention cover (20) is not soaked in water, so that the electrical switch box (10) can be prevented from being flooded and an electric shock accident can occur. And secondary economic losses due to recovery work, etc. can be prevented in advance.

  On the other hand, the rising limit line of the inner water surface (71) is displayed on the flood prevention cover (20) so that the inner water surface (71) can be detected so as not to exceed the position of the hot air discharge hole. . For this reason, the infiltration prevention cover (20) is formed so that an airtight holding structure is formed in the lower direction, that is, in all directions except the inner water surface (71) side so that an air chamber is formed. It is preferably formed of glass or a transparent plastic material that can see the inside, or a combination of transparent vinyl and a bellows-shaped frame and an airtight holding structure necessary for forming an air chamber. Here, unexplained code | symbol "70" shows an outer water surface.

  Meanwhile, the flood prevention cover (20) may be formed of an opaque and rigid metal material.

  FIG. 4 is an exploded view of the structure for understanding the assembly and functions of the inundation prevention cover and its accessories according to the present invention, and is shown for the purpose of understanding the functions related to the electrical switch box, taking the electrical switch box as an example. It is a figure.

  As shown in FIG. 4, in addition to the electrical switch box (10) and the flood prevention cover (20), in addition to the electrical switch box (10) and the flood prevention cover (20), a separate immersion tank (40) and protective cage (50) are provided. Is further included. There is a risk that floating materials such as wreckage of wood will emerge due to the generation of rapid flow during flooding, causing damage and damage to the flood prevention cover (20).

  Here, the protective cage (50) is a square made of a solid material such as an iron material for protecting the infiltration prevention cover (20) from an impact so as to prevent such a situation. A cage of shape. If the inundation prevention cover (20) is sufficiently strong and there is a guarantee that rapids or floating objects will not rise, the formation of the protective cage (50) can be omitted. When the protective cage (50) is attached to the protective cage (50), a similar flange is formed on the protective cage (50) so as to be fastened by the flange portion (21) of the infiltration prevention cover (20). It is necessary to manufacture so that a part may be formed, and it is necessary to form a sufficient number of fastening holes so that the flange parts can be tightly fastened.

  When the water-inhibiting cover (20) moves up and down, the protective cage (50) also moves up and down, and the surfaces other than the lower opening of the water-inhibiting cover (20) impair airtightness. Without this, it becomes possible to form an integral attachment with the protective cage (50). If the joint area of the flange portions is not sufficient, the protective cage (50) is attached to the support cage (27) so that the support wing (27) formed on the outer surface of the infiltration prevention cover (20) can be mutually fastened or adhered. Also, the supporting wing (27) and the fastening hole of the same form can be expanded. At this time, the shape of the protective cage (50) is additionally formed with a complicated curve or a protruding shape that is not a quadrangle so as not to be in the way of being tightly fastened with the infiltration prevention cover (20) or inserted and assembled. can do.

  The protective cage (50) has a guide hole (51) into which the guide frame (22) of the water immersion prevention cover (20) can be inserted on one side of the protective cage (50). (50) can be easily put on the outside of the infiltration prevention cover (20) and combined.

  In addition, the upper part of the flood prevention cover (20) or the protective cage (50) includes a normal mechanical latch (a latch for holding the outerwear state) and a limit switch, and a vertical drive frame (52). The vertical movement of the vertical drive frame (52) is performed by operating the drive motor (75) or the manual handle, and is operated by the rotation of the rotation shaft (73) of the drive motor (75). become. When the drive motor (75) fails, it can be operated manually. A configuration for manual operation will be described later.

  When the upper and lower drive frames (52) are lowered by the operation of the drive motor (75), the flood prevention cover (20) or the protective cage (50) is held in an underwear state. When it is desired to keep the lowered water immersion prevention cover (20) in a jacket state, the vertical drive frame (52) may be pulled up again. The vertical drive frame (52) can also be replaced by gears, sprocket frames, chains, manual or electric drive devices, and the like. Such vertical drive frames (52), gears, sprocket frames, chains, manual and electric drive devices can be often seen in the industrial field. Such up and down movement of the vertical drive frame (52) can be performed by an electric type and a manual type.

  For example, in the case of the electric type, as shown in FIG. 4, the drive shaft (73) and the pinion gear (71) are rotated integrally by the operation of the drive motor (75), and one side of the vertical drive frame (52). On the other hand, the vertical drive frame (52) is moved up and down by a rack gear (54) meshing with the pinion gear (71). At this time, the drive shaft (73) is provided with the first gear (81) so that it can rotate together with the drive shaft (73). In the case of the manual type, when the handle (86) is turned as an operation means for use when the drive motor (75) malfunctions, the second gear (85) connected thereto is rotated, The first gear (81) connected by the two gears (85) and the chain (83) rotates in conjunction with the drive shaft (73) and the pinion gear (71), and the pinion gear rotated in this way. The vertical drive frame (52) is moved up and down by the rack gear portion (54) meshing with (71).

  Here, the unexplained reference numeral “53” shows a bracket for connecting the flood prevention cover (20) or the protective cage (50) to the vertical drive frame (52). This bracket can also be formed as an integral fixed type to the flood prevention cover (20) or a variable angle type that allows the inclination to change with the vertical drive frame (52). The vertical drive frame (52) is provided with a flood prevention cover (20) according to the purpose of reinforcing the strength of the flood prevention cover (20), as well as the gear, sprocket frame, chain, manual and electric drive device configuration method, etc. 20) can be integrally formed on the outer wall which is not the upper part.

  On the other hand, the protective cage (50) coupled in this way is also in the state of being worn with the electrical switch box (10) together with the vertical drive frame (52) by the latch (30) installed on the lower surface of the electrical switch box (10). Can be integrally coupled to each other.

  Further, when the water tank (40) for inundation test is raised with water filled therein, the electric switch box (10) is connected to the water prevention cover (20) and the protective cage (50). At the same time, it sinks into the water tank for immersion test (40). At this time, the power cable pipe (12) connected to the electric switch box (10) is installed with one side bent upward in an S shape as shown in FIG. Interference with the submergence test water tank (40) can be prevented during the submergence test of (10).

  As shown in FIG. 4, the fixing means (60) is rotatably coupled to a predetermined wall surface, that is, a fixing plate (61) fixed to a wall surface of a building or the like, and a front portion of the fixing plate (61). Hook (62), and a spring (63) which is installed at a coupling portion between the hook (62) and the fixing plate (61) and provides an elastic force for rotating the hook (62) to the upper side of the fixing plate (61). ) (Also known as “torsion spring”). Here, the hook (62) is formed in a size (width) corresponding to the mounting hole (11) formed in the lower part of the electric switch box (10), and the hook (62), the mounting hole (11), It is an object to prevent horizontal movement of the electrical switch box (10) at the time of coupling.

  Therefore, when the electric switch box (10) is fixed, after the hook (62) rotated upward of the fixing plate (61) is rotated in the reverse direction and then deployed, it is inserted into the mounting hole (11) of the electric switch box (10). The hook (62) is inserted and joined. At this time, due to the elastic force of the spring (63) acting on the hook (62), the hook (62) is subjected to a restoring force to rotate upward of the fixing plate (61). The state locked to the attachment hole (11) while being in close contact with the lower surface of the electrical switch box (10) can be kept stronger. When the infiltration prevention cover (20) has to be kept in a jacket state, the hook (62) is attached to the electromagnetic power unit consistent with the vertical movement of the infiltration prevention cover (20) in order to save labor. Can be operated. In this case, a state in which the underwear state of the flood prevention cover (20) can be changed naturally or automatically does not occur even if the underwear state is not desired to be the outerwear state when a power failure occurs.

  On the other hand, when the electric switch box (10) thus coupled and fixed to the hook (62) of the fixing means (60) is subjected to a water immersion test, the hook (62) is covered with the water-proofing cover (20). When the is turned to the wall side and pulled out, a space for raising the submergence test water tank (40) is secured while being separated from the electric switch box (10). When the protective cage (50) is inserted and joined to the guide hole (51) and the guide frame (22) from the upper part of the water immersion prevention cover (20) of the protective cage (50), the protective cage (50) is submerged. The protective cover (20) is installed so as to cover and surround the outer surface, and the protective cage (50) is coupled and fixed by the latch (30) of the electric switch box (10), so that the protective cage (50) and the flood prevention cover ( 20) is fixed integrally to the electric switch box (10). When it is determined that the protective cage (50) is not necessary due to various considerations in terms of safety conditions, the protective cage (50) including the vertical drive frame (52) and the guide hole (51) should be located. The formed additional component is configured to be integrated with the flood prevention cover (20). In the case of electrical equipment such as cubicles of control computers, local control centers, transformers, switchgears, etc., which are large in weight and installed on the base, the latch (30) is the base. So that it can be connected to the pedestal. The latch (30) can be replaced with a gear, a sprocket frame, a chain, a manual type and an electric type driving device or the like, or can be combined.

  In such a state, the water immersion test water tank (40) is raised at the bottom of the electric switch box (10), and the electric switch box (10) to which the protective cage (50) and the water immersion prevention cover (20) are fastened is submerged. Even if the test water tank (40) is submerged, the internal space between the submergence prevention cover (20) and the electrical switch box (10), that is, the submergence prevention cover, as described with reference to FIG. Since the pressure due to the residual air acts on the internal space of (20), even if the infiltration prevention cover (20) is completely submerged in the inside of the inundation test water tank (40) by this internal pressure, the infiltration prevention cover Water no longer flows into the internal space (S) of (20), and thus the electric switch box (10) inside the water-preventing cover (20) does not sink into water, preventing water from entering. It was.

  When performing a test for confirming the inundation protection performance of such an inundation prevention cover (20), it is possible to raise the inundation test water tank (40) containing water from the bottom to the top of the electric switch box (10). When installing the electrical switch box (10), it is necessary to bend the lower power cable pipe (12) into an S shape.

  In the case of electrical equipment installed on a pedestal, such as a control computer cubicle, a local control center, a transformer, a switchgear, etc. In this case, the power cable pipe (12) cannot be installed in an S-shape, so a water immersion test is performed by another method. For example, it is determined whether or not an inert colored gas is injected into the inside of the flood prevention cover (20) so as to be sealed, and if the cable penetration part at the bottom of the seat is airtightly maintained, Even if a water wall is formed around the table to fill the water and hold only a slight water level, it is possible to confirm whether or not the water will be submerged in the underwear state of the submergence prevention cover (20). The flood prevention cover (20) here and the water wall around the pedestal can be manufactured and installed in a bellows shape.

  Moreover, without impairing the formation function of the air chamber (chamber) of the inundation prevention cover (20), a thermometer, an emergency oxygen cylinder, an emergency light, a roller wheel, a inundation detection sensor (sensor), a limit switch (limit) Protrusion attachment or formation of support wings (Fin or Stud) (27) on the inside and outside of the flood prevention cover (20) so that auxiliary fixtures or accessories such as switches can be attached Can do. This is because if an equipment operator or equipment maintenance staff cannot evacuate from a sudden flood or tsunami, the head is temporarily placed inside an inundation prevention cover that has a large space, and an emergency oxygen cylinder is used. Can be used together for the purpose of breathing and being able to keep life protected. That is, it can also be used as an emergency lifesaving chamber.

  At the time of the inundation test, the power cable pipe (12) connected to the electric switch box (10) is bent in an S shape to locate the inundation test water tank (40). It is necessary to finally check once again whether or not water has permeated and accumulated in the pipe-shaped part. For this reason, a drainage inspection drain valve (13) is installed at the inflection part of the S-shaped pipe directly under the electrical switch box (10) and closed during normal times and during the flooding test. After retreating the water test tank (40), it is finally checked whether or not the S-shaped pipe is submerged when it is confirmed whether the water is temporarily opened and drained. When water intrusion into the S-shaped pipe is confirmed, it is necessary to perform the water immersion test again after improving the waterproof filling in the connection portion between the electric switch box (10) and the power cable pipe (12).

  FIG. 5 is a view illustrating a state in which a switch box support for placing the switch box on the upper side is installed when performing an inundation test of the electric switch box according to the present invention.

  As shown in FIG. 5, when the electric switch box (10) is provided on a wall surface or a pillar, the shape of the switch box support 65 is not obstructed when the flood prevention cover (20) is in an underwear state. The lower part of the water-immersion test water tank (40) is between the wall side (or the column side) and the lower part of the water-proof cover (20) located in the underwear state so that the lower opening is sufficiently immersed in water. It is necessary to form a structure that is bent in a crank shape so that a space is secured so as not to be obstructed when the lip (edge) rises, and when viewed from the side. .

  After the inundation test is completed, the fixing means (60) attached to the wall surface or pillar is attached to the mounting hole (60) so that the electric switch box (10) and the switch box support 65 are prevented from shaking in the horizontal direction. 11) Restore to the state of insertion.

10 Switch box (switchbox)
11 Mounting hole 12 Power cable piping 13 Drain valve for inundation inspection 20 Inundation prevention cover (cover)
21 flange part 22 guide frame (guide frame)
23 Hot air discharge hole 24 Air supply pipe 25 Hot air discharge induction pipe 26 Roller wheel 27 Support blade 30 Latch
40 Water tank for immersion test 50 Protective cage
51 Guide hole 52 Vertical drive frame 53 Bracket
54 Rack gear (rack gear)
60 Fixing means 61 Fixing plate 62 Hook
63 Spring
65 Switch box support 71 Pinion gear
73 Drive shaft (shaft)
75 Drive motor
81 1st gear
83 chain
85 Second gear
86 Handle
S Interior space of the flood prevention cover

Claims (9)

In an electrical switch box that controls the power supply of electrical equipment installed on a predetermined mounting surface,
The electric switch box is installed so that it can be coupled and fixed to the electric switch box with a latch in a state where the infiltration prevention cover opened only on the lower side is covered.
An inundation protection device according to claim 1, wherein a space is formed between the electric switch box and the inundation prevention cover so as to be able to act while maintaining air pressure.   2. The inundation protection device according to claim 1, wherein a hot air discharge induction pipe or a hot air discharge induction hose that discharges internal heat is connected to the hot air discharge hole.   The inundation protection device according to claim 1, wherein an air supply pipe capable of replenishing air is connected to the inside of the inundation prevention cover.   An upper and lower drive frame for moving the flood prevention cover up and down above the flood prevention cover, a drive motor that realizes vertical movement of the upper and lower drive frame, and a drive shaft that rotates when the drive motor operates. The inundation protection device according to claim 1, further comprising a pinion gear formed and meshed with the upper and lower drive frames.   A flange portion having a guide frame and a guide hole through which the guide frame penetrates so that the electric switch box can be moved up and down without touching or colliding with the outside when the water prevention cover moves up and down. The inundation protection device according to claim 1, wherein:   The inundation protection device according to claim 1, wherein a roller wheel is attached inside the inundation prevention cover.   2. The inner water surface rising limit line is formed on the inundation prevention cover so that it can be detected whether or not the inner water surface of the infiltration prevention cover exceeds the position of the hot air discharge hole. Inundation protection device.   A power cable pipe is bent and installed in an S shape at the bottom of the electric switch box, and a drainage inspection drain valve is installed at an inflection portion of the S switch pipe of the electric switch box. The inundation protection apparatus according to claim 1.   A switch box support for placing the electrical switch box on the top is further provided, the switch box support being configured such that the upper portion is not obstructed when the flood prevention cover is located in an underwear state, and the lower portion is in an underwear state. In order to allow the lower opening of the flood prevention cover located at the bottom to be immersed in water, a space is ensured so that it is not obstructed when the tank for immersion test rises between the wall side or the column side. The inundation protection device according to claim 1, wherein the inundation protection device is bent.

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