Dehumidification device during power outage

Abstract

To provide a dehumidification device during power outage that can dehumidify the inside of the enclosure during power outage.SOLUTION: A dehumidification device 3 during power outage is used in a closed panel 1 in which a dehumidifying device 2 that operates by receiving a supply of electricity is installed in a housing 11. The dehumidification device 3 during power outage includes a box body 4 in which a vent 41 is formed and a desiccant 9 is housed inside, a lid 5 that closes the vent 41 so as to be openable, and a drive unit 6 that drives the lid 5 to open the vent 41 when no electricity is applied.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a power failure dehumidification device, and more particularly to a power failure dehumidification device used in a closed panel. [Background technology]

[0002] Patent Document 1 discloses one embodiment of a closed type panel (hereinafter, closed panel). The closed panel described in Patent Document 1 is a switchboard. The switchboard has a dehumidifying device such as a space heater installed inside the housing to prevent deterioration of electrical equipment such as a transformer installed inside due to condensation. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2022-019155 Summary of the Invention [Problem to be solved by the invention]

[0004] However, dehumidifiers such as space heaters operate by receiving electricity. For this reason, in the switchboard of Patent Document 1, the operation of the dehumidifier stops during a power outage, so dehumidification cannot be performed. If the power outage continues for a long time, the humidity inside the switchboard increases, and condensation formed inside the switchboard may cause rust or deterioration of insulation.

[0005] An object of the present invention is to provide a power failure dehumidification device capable of dehumidifying the inside of a closing panel in the event of a power failure. [Means for solving the problem]

[0006] One embodiment of the dehumidification device according to the present invention is a dehumidification device for use in a closed panel in which a dehumidification device that operates by receiving electricity is installed inside a housing, and includes a box body in which an air vent is formed and a dehumidifying agent is contained inside, a lid that closes the air vent so that it can be opened, and a drive unit that drives the lid to open the air vent when no electricity is applied. Effect of the Invention

[0007] The power failure dehumidification device according to the above aspect of the present invention has the advantage that it can dehumidify the inside of the closing panel when a power failure occurs. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a schematic front view of a substation facility having a plurality of closure panels according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic cross-sectional view of one closing plate according to the embodiment. [Diagram 3] FIG. 3 is an enlarged view of part A in FIG. 2. [Figure 4] FIG. 2 is a block diagram of a control unit. [Diagram 5] 13 is a schematic enlarged view of a vent hole, a lid, and a drive unit according to a modified example. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] <Embodiment> The power failure dehumidification device 3 according to this embodiment is a device that is disposed inside a closed type panel (hereinafter, closed panel 1) and can dehumidify the inside of the closed panel 1 during a power failure. In this embodiment, a plurality of closed panels 1 are included in a power receiving and transforming equipment 100 (switchgear). The power receiving and transforming equipment 100 is installed in a facility such as a building or a factory. The power receiving and transforming equipment 100 may be installed outdoors or indoors.

[0010] The substation equipment 100 according to this embodiment is a closed switchboard, and as shown in Fig. 1, a plurality of closed panels 1 are connected in a line in the left-right direction. As shown in Fig. 2, each closed panel 1 includes a housing 11, a power device (not shown), a dehumidifier 2, and a power failure dehumidifier 3.

[0011] (Case 11) The housing 11 is formed in a box shape and constitutes the outer shell of each closure plate 1. The housing 11 has a pair of side plates 111, a top plate 112, a bottom plate 113, a front door, and a rear door. The material of the housing 11 is preferably a non-flammable material, such as a metal plate, synthetic resin, carbon, glass, pottery, ceramics, etc.

[0012] (power equipment) The power equipment is equipment that operates by receiving a supply of electric power. The power equipment is installed inside the housing 11. There are no particular limitations on the power equipment, and examples of the power equipment include disconnecting switches, circuit breakers, transformers, protective relays, control devices, and measuring instruments.

[0013] (Dehumidification equipment 2) The dehumidifier 2 dehumidifies the inside of the housing 11 during normal times (i.e., when there is no power outage) to reduce the occurrence of condensation. The dehumidifier 2 is an electric device that operates by receiving power supply. Examples of the dehumidifier 2 include a dehumidifier 22, a space heater 21, and a ventilator. In this embodiment, the multiple dehumidifiers 2 are arranged separately inside the housing 11 as shown in FIG. 2. One of the multiple dehumidifiers 2 is a space heater 21, and the other is a dehumidifier 22. Strictly speaking, the space heater 21 does not remove moisture from the air, but since it reduces the occurrence of condensation by increasing the ambient temperature and thereby reducing the relative humidity, the space heater is also included in the dehumidifier 2 in this specification.

[0014] (Dehumidification device during power outage 3) The power failure dehumidifier 3 dehumidifies the inside of the housing 11 in the event of a power failure. The power failure dehumidifier 3 is installed in the housing 11 as shown in Fig. 2. As shown in Fig. 2, the power failure dehumidifier 3 includes a box body 4 having an air vent 41, a lid 5 that closes the air vent 41 so as to be openable, a drive unit 6 that drives the lid 5, and a control unit 8 (Fig. 4) that controls the drive unit 6.

[0015] The box body 4 is formed in a hollow box shape, and contains the desiccant 9 inside. In this embodiment, the box body 4 is formed in a hexahedral shape, but may be, for example, a cylindrical shape, a triangular pyramid shape, etc. The material of the box body 4 is not particularly limited, and examples thereof include a metal plate, a synthetic resin, carbon, glass, pottery, ceramics, and pulp.

[0016] An air vent 41 is formed on one side surface (here, the top surface) of the box body 4. The air vent 41 penetrates the side wall of the box body 4 in the inward and outward directions. When the air inside the box body 4 comes into contact with the desiccant 9 inside the box body 4, moisture is adsorbed by the desiccant 9 and the air is dehumidified.

[0017] Examples of the agent contained in the dehumidifying agent 9 include silica gel (type A and type B), zeolite, and deciclay (a clay-based desiccant). The dehumidifying agent 9 is configured, for example, by storing the agent in a breathable bag. One or more dehumidifying agents 9 are stored in the box body 4. It is preferable that the dehumidifying agents 9 are stored in the box body 4 so that they can be replaced. This allows a dehumidifying agent 9 whose moisture adsorption capacity has decreased to be replaced with a new dehumidifying agent 9.

[0018] The desiccant 9 preferably contains a reversible desiccant 9 capable of absorbing and releasing moisture. An example of an agent contained in the reversible desiccant 9 is B-type silica gel.

[0019] The lid 5 closes the vent 41 of the box body 4 in an openable manner. The lid 5 is attached via a hinge attached to the edge of the vent 41 of the box body 4, as shown in FIG. 3. The lid 5 can rotate around the axis of the hinge. The lid 5 can open the vent 41 by rotating around the axis of the hinge. In other words, the lid 5 can be switched between a "closed position" in which the vent 41 is closed and an "open position" in which the vent 41 is opened. Note that the lid 5 in the closed position does not need to be airtight or watertight as long as it can close the vent 41.

[0020] The driving unit 6 drives the lid 5 to switch the lid 5 between a closed position and an open position. As shown in Fig. 3, the driving unit 6 according to this embodiment includes a solenoid 61, an elastic body 62, and a bracket 63. The solenoid 61 has a plunger 611 passed through a coil in a frame 612, and when a voltage is applied to the coil, the plunger 611 moves so as to be drawn into the frame 612, and when no voltage is applied, the force applied to the plunger 611 is released. That is, the solenoid 61 according to this embodiment is a pull-side solenoid.

[0021] In this embodiment, the solenoid 61 is attached to the inner surface of the box main body 4. However, the solenoid 61 may be attached to the outer surface of the box main body 4.

[0022] The elastic body 62 applies a force to the plunger 611 in a direction away from the frame 612 in the central axial direction. When no voltage is applied, the elastic body 62 causes the plunger 611 to move in a direction protruding from the frame 612. Examples of the elastic body 62 include a torsion coil spring and rubber.

[0023] The bracket 63 connects the lid 5 and the plunger 611. The bracket 63 is fixed to the inner surface of the lid 5, and can transmit the force caused by the axial movement of the plunger 611 to the lid 5.

[0024] When a voltage is applied to the drive unit 6, the plunger 611 moves in a direction in which the plunger 611 is pulled into the frame 612, thereby moving the lid 5 to the closed position. This prevents new air from flowing into the box body 4 through the ventilation hole 41, thereby reducing a decrease in the moisture adsorption capacity of the desiccant 9.

[0025] When no electricity is applied to the drive unit 6, the plunger 611 moves in a protruding direction from the frame 612, thereby moving the lid 5 to the open position. In this way, in the event of a power outage, air from outside the box body 4 can be taken into the box body 4 through the vent 41, and the taken-in air can be dehumidified.

[0026] In the power failure dehumidifier 3, when there is no power failure, it is preferable that the control unit 8 controls the drive unit 6 as follows in order to recover (regenerate) the moisture adsorption capacity of the desiccant 9.

[0027] The power failure dehumidification device 3 has a humidity sensor 7 that detects the humidity inside the housing 11 of the closing panel 1. The humidity sensor 7 outputs an electric signal generated by detecting the humidity to the control unit 8. The humidity sensor 7 is disposed inside the housing 11 and outside the box body 4.

[0028] The control unit 8 controls the drive unit 6 using the detection result of the humidity sensor 7. As shown in FIG. 4, the control unit 8 includes a signal receiving unit 81, a determination unit 82, and a drive control unit 83. The control unit 8 is configured with a control circuit mainly composed of a microcontroller having one or more processors and one or more memories. The function of the control unit 8 is realized by the processor of the microcontroller executing a program recorded in the memory of the microcontroller. The program may be pre-recorded in the memory, or may be provided by recording it on a non-transitory recording medium such as a memory card.

[0029] The signal receiving unit 81 receives the electrical signal transmitted from the humidity sensor 7. Based on the electrical signal received by the signal receiving unit 81, the determination unit 82 performs a determination.

[0030] The determination unit 82 determines whether the detection result of the humidity sensor 7 is equal to or greater than the threshold. When the humidity sensor 7 detects humidity equal to or less than the threshold, the determination unit 82 determines that the air inside the housing 11 is dry, and outputs a command signal to the drive control unit 83 to open the ventilation opening 41. On the other hand, when the humidity sensor 7 detects humidity exceeding the threshold, the determination unit 82 determines that the air inside the housing 11 is excessively humid, and outputs a command signal to the drive control unit 83 to close the ventilation opening 41.

[0031] The threshold is preferably set in a range of 50% to 70% relative humidity, and more preferably in a range of 55% to 65%. With this configuration, the desiccant 9 can be efficiently regenerated in the closing panel 1 when there is no power outage. It is preferable that the threshold setting can be changed by the user as appropriate depending on the environment.

[0032] The drive control unit 83 transmits drive power to the drive unit 6 based on the command signal input from the determination unit 82. When a command signal to open the vent 41 is input, the drive control unit 83 sets the solenoid 61 to a non-energized state. Then, the plunger 611 of the solenoid 61 protrudes due to the action of the elastic body 62, and the lid 5 is switched to the open position so as to open the vent 41. On the other hand, when a command signal to close the vent 41 is input, the drive control unit 83 sets the solenoid 61 to a powered state. Then, the solenoid 61 moves the plunger 611 in a direction to retract into the frame 612, and the lid 5 is switched to the closed position so as to close the vent 41.

[0033] This allows the humidity of the desiccant 9 to be adjusted. That is, when there is no power outage and the humidity inside the housing 11 is low, the vent 41 of the box body 4 can be opened to dry the desiccant 9, and the moisture adsorption capacity of the desiccant 9 can be restored. On the other hand, when there is no power outage and the humidity inside the housing 11 is high, the vent 41 of the box body 4 can be closed to reduce the desiccant 9 from adsorbing more moisture than it does now. As a result, the dehumidification function can be fully exerted during a power outage.

[0034] The box body 4 containing the desiccant 9 is preferably disposed adjacent to the dehumidifier 2 as shown in Fig. 2. This allows the adsorption ability of the desiccant 9 to be more effectively utilized during non-power outages. However, the location of the box body 4 does not have to be adjacent to the dehumidifier 2, and it may be installed, for example, along the inner surface of the front door or rear door.

[0035] <Modification> The above embodiment is merely one of various embodiments of the present invention. The embodiment can be modified in various ways depending on the design, etc., as long as the object of the present invention can be achieved. Modifications of the embodiment are listed below. The modifications described below can be applied in appropriate combination.

[0036] In the above embodiment, the lid 5 rotates around the rotation axis of the hinge to open the vent 41, but for example, as shown in FIG. 5, the lid 5 may move in a direction along the opening surface relative to the vent 41. As shown in FIG. 5, when the plunger 611 moves in a direction protruding from the frame 612 during non-voltage application, the lid 5 can be moved in a direction along the opening surface so as to open the vent 41. On the other hand, when the plunger 611 moves in a direction retracting into the frame 612 during voltage application, the lid 5 can be moved in a direction along the opening surface so as to close the vent 41. This configuration has the advantage that no space is required around the box body 4 for the lid 5 to open.

[0037] In the above embodiment, the closed panel 1 has been described based on a switchgear having a plurality of closed panels 1, but the closed panel 1 may be, for example, a closed distribution panel, a closed control panel, a closed monitoring panel, a closed power panel, etc. In addition, adjacent closed panels 1 may be connected to each other, or may be composed of only individual closed panels 1.

[0038] In the above embodiment, the solenoid 61 is used as the driving source of the driving unit 6, but the driving unit 6 may be configured by a combination of a permanent magnet and an electromagnet. For example, when a voltage is applied, the magnetic force of the electromagnet may position the lid 5 in the closed position, and when a voltage is not applied, the repulsive force of the permanent magnet may switch the lid 5 to the open position.

[0039] The humidity sensor 7 according to the above embodiment may be, for example, the humidity sensor 7 provided in the dehumidifier 2. The control unit 8 receives a signal from the humidity sensor 7 of the dehumidifier 2 and can control the drive unit 6 using the detection result of the humidity sensor 7.

[0040] Although one vent hole 41 is provided in the box body 4 in the above embodiment, it may be formed of a plurality of through holes such as punched metal, or may be formed of a plurality of slits.

[0041] Although the lid 5 in the above embodiment is formed in a flat plate shape, the lid 5 may be configured, for example, by a plurality of louvers. Each of the plurality of louvers can close and open the ventilation opening 41 by rotating.

[0042] In the above embodiment, the control unit 8 attempts to regenerate the desiccant 9 when there is no power outage, but the function of regenerating the desiccant 9 is not necessary, that is, the control unit 8 may not be necessary.

[0043] The control unit 8 may realize a judgment unit 82 and a drive control unit 83 by outputting a non-voltage contact of the humidity sensor 7 to a power supply circuit to the drive unit 6, and control the opening and closing of the air vent 41 when there is no power outage.

[0044] <Summary> As described above, the dehumidification device 3 for use during power outages in the first embodiment is a dehumidification device for use in a closed panel 1 in which a dehumidifying device 2 that operates when supplied with electricity is installed in a housing 11, and includes a box body 4 in which an air vent 41 is formed and a desiccant 9 is contained inside, a lid 5 that closes the air vent 41 so as to be openable, and a drive unit 6 that drives the lid 5 to open the air vent 41 when no electricity is applied.

[0045] According to this embodiment, since the ventilation opening 41 is opened when no electricity is applied, it is possible to dehumidify the air taken in through the ventilation opening 41 during a power outage. That is, the dehumidifying agent 9 that suppresses moisture adsorption during normal times (when there is no power outage) can dehumidify the air inside the housing 11 by opening the ventilation opening 41 during a power outage. As a result, it is possible to dehumidify the inside of the closing panel 1 even during a power outage.

[0046] The power outage dehumidifier 3 of the second embodiment is further provided with a humidity sensor 7 that detects the humidity inside the housing 11 and a control unit 8 that controls the drive unit 6 using the detection result of the humidity sensor 7 in the first embodiment.

[0047] According to this embodiment, the opening and closing of the ventilation hole 41 can be controlled according to the humidity inside the housing 11 during voltage application.

[0048] In the dehumidifier 3 for use during power outages according to the third embodiment, in the second embodiment, the desiccant 9 includes a reversible desiccant 9 capable of absorbing and releasing moisture. When the humidity sensor 7 detects humidity equal to or lower than a threshold value during application of voltage to the drive unit 6, the control unit 8 controls the drive unit 6 to drive the lid 5 to open the vent 41.

[0049] According to this embodiment, when there is no power outage and the humidity inside the housing 11 is low, the vent 41 of the box body 4 can be opened to dry the desiccant 9, so that the moisture adsorption capacity of the desiccant 9 can be restored. As a result, the rate at which the dehumidification capacity of the desiccant 9 decreases can be suppressed.

[0050] In the power outage dehumidifier 3 of the fourth aspect, in the second or third aspect, when the humidity sensor 7 detects a humidity level exceeding a threshold value when power is applied to the drive unit 6, the control unit 8 controls the drive unit 6 to drive the lid 5 to close the air vent 41.

[0051] According to this embodiment, when there is no power outage and the humidity inside the housing 11 is high, the vent 41 of the box body 4 can be closed to reduce a decrease in the moisture adsorption capacity of the desiccant 9.

[0052] In the dehumidification device 3 for use during power failure according to the fifth aspect, in the third or fourth aspect, the threshold value is set so that the relative humidity is in the range of 50% or more and 70% or less.

[0053] According to this embodiment, in the closing plate 1, the desiccant 9 can be appropriately regenerated when a voltage is applied. [Explanation of symbols]

[0054] 1 Closed board 11. Cabinet 2 Dehumidification equipment 3 Dehumidification device during power outage 4 Box body 41 Vent 5 Lid 6 Drive unit 7 Humidity Sensor 8. Control Unit 9. Dehumidifier

Claims

1. A dehumidification device for use during a power outage, the dehumidification device being installed in a housing and operated by receiving electricity, A box body having an air vent formed therein and containing a desiccant; a cover for releasably closing the vent hole; a drive unit that drives the cover to open the ventilation hole when no voltage is applied; Equipped with Dehumidification device during power outage.

2. a humidity sensor for detecting humidity inside the housing; a control unit that controls the drive unit using a detection result of the humidity sensor; Further comprising: The dehumidification device for use during power outages according to claim 1.

3. The dehumidifying agent includes a reversible dehumidifying agent capable of absorbing and releasing moisture, When the humidity sensor detects humidity equal to or lower than a threshold value during application of voltage to the drive unit, the control unit controls the drive unit to drive the lid to open the vent hole. The dehumidification device for use during power outages according to claim 2.

4. When the humidity sensor detects humidity exceeding a threshold value during application of voltage to the drive unit, the control unit controls the drive unit to drive the lid to close the vent hole. The dehumidification device for use during a power outage according to claim 2 or 3.

5. The threshold value is set to a relative humidity range of 50% or more and 70% or less. The dehumidification device for use during a power outage according to claim 3 or 4.

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