JP2008236970A - Uninterruptible power supply unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an uninterruptible power supply unit wherein wiring work is smoothly carried out without the need for ensuring an installation location. <P>SOLUTION: This uninterruptible power supply unit 1, for supplying a building under work with required power through a drop wire in performing uninterruptible work, includes: a housing 3 for accommodating a backup power supply 2 for supplying the demand of the building for period of time; and a coupling cable 6 for electrically connecting the backup power supply 2 with the drop line. The housing 3 accommodating the backup power supply 2 is removably mounted on a power pole for supporting the drop line with a belt body 4 and a suspension part 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an uninterruptible power supply device used in the event of a power failure associated with the construction of power facilities.

  Conventionally, when performing uninterruptible work, a small generator is placed on a carriage and carried to a construction site, and power is supplied from the generator to a building that is interrupted by power distribution work. However, when a small generator is used, it is troublesome to reload the cart and secure the location of the cart, and noise problems due to the operation noise of the generator arise. Therefore, a DC power source such as a battery power source set to a capacity that covers the power demand of the building subject to wiring work and the like, and a DC / AC conversion unit that converts the DC power source into an AC backup power source corresponding to a system power source And an uninterruptible power supply device including a power output unit that feeds the backup power source to a construction target house via a voltage balancer (see, for example, Patent Document 1).

Such an uninterruptible power supply is made portable by providing a relatively small DC power supply, so it is smaller and lighter than a generator, and an operator can carry it to the construction site and uninterruptible buildings. Power distribution work etc. can be done at.
JP-A-10-285833

  However, even if such an uninterruptible power supply is brought into the distribution work site, it may hinder wiring work depending on the installation location. For example, when the uninterruptible power supply device is mounted on a work platform of an aerial work vehicle that performs power distribution work or the like, there arises a disadvantage that the uninterruptible power supply device and its connection cable or the like hinder the power distribution work. Conversely, when an uninterruptible power supply is installed in an alley, it is necessary to arrange a guidance supervisor so that a general passerby does not get an electric shock due to the output voltage of the uninterruptible power supply. In particular, on site such as wiring work, construction equipment, newly laid cables and old cables before replacement are mixed, so the uninterruptible power supply and its connection cables should be placed in an appropriate position so as not to hinder the construction. It is desired to install.

  Therefore, an object of the present invention is to provide an uninterruptible power supply device that does not require an installation place and can perform wiring work and the like smoothly.

  The present invention is an uninterruptible power supply that supplies necessary power to a building to be constructed via a lead-in line when performing uninterruptible construction, and is a backup power source for covering the demand power of the building for a certain period of time , A connecting means for electrically connecting the backup power source to the lead-in wire, and an attaching means for detachably attaching the housing to a support that supports the lead-in wire.

  According to the uninterruptible power supply of the present invention, a housing that stores a backup power source that supplies power required for a building to be constructed is supported by a mounting means, such as a power pole that supports a lead-in wire of the building. It can be detachably attached to the body. Thereby, it is not necessary to secure a place to install the uninterruptible power supply again, and the uninterruptible power supply can be attached to the position of the support body close to the lead-in line. This construction can be carried out smoothly without hindering power distribution work.

  It is preferable that the attachment means is a belt body capable of winding the casing around the support body. Thereby, the structure which attaches the housing | casing which stored backup power supply to a support body so that attachment or detachment is possible is easily realizable.

  As the attachment means, it is preferable to include a suspended portion capable of suspending the housing from the protruding portion of the support. As a result, the housing containing the backup power source can be suspended, for example, on a projecting portion such as a scaffolding bolt of a utility pole via the suspended portion, and the housing can be securely attached to the support.

  The connection means preferably includes a power cable and a connection clamp for detachably connecting the power cable to the lead-in wire. With the connection clamp, a power cable extending from the backup power source can be connected to or removed from the lead-in wire, and uninterruptible work can be easily performed.

  As shown in FIG. 1, the uninterruptible power supply 1 according to the present embodiment includes a backup power source 2 (see FIG. 2) that supplies electric power necessary for a building that is an object of uninterruptible construction through a lead-in line. A housing 3; a belt body 4 that attaches the housing 3 to a power pole as a support that supports the lead-in wire; a suspension portion 5 that suspends the housing 3 from a protruding portion such as a scaffolding of the power pole; a backup power source 2; And a power cable 6 as connection means for connecting the two.

  As shown in FIG. 2, the backup power source 2 includes a battery 21 as a DC power source that can cover power consumption for a building subject to uninterruptible work for a certain period of time, and the voltage of the battery 21 is changed to a commercial AC voltage. And a control unit 22 including a circuit unit (not shown) such as an inverter circuit for conversion.

  The battery 21 is a secondary battery having a capacity of about 10 kWh, for example, 30V to 40V, so as to cover the average power consumption (demand power) of a general house (household) for several tens of minutes to several hours where construction work is performed. Etc. When the battery 21 is set at a predetermined position in the housing 3, an electrode portion thereof is connected to the battery connector 23, and the battery 21 and the control unit 22 are electrically connected via the battery connector 23. A plurality of batteries 21 can be used in parallel, and each battery can be replaced.

  The control unit 22 includes a main switch 24 for turning on or off the uninterruptible power supply 1, a changeover switch 25 for selecting output power, and a display 26 on the front surface thereof. The changeover switch 25 can set the output voltage to 100 V or 200 V in accordance with the system voltage, and at the same time, a current threshold value (for example, 15 or 15) that turns off the uninterruptible power supply 1 when a current of a predetermined current value or more flows. 30 amps) can be set. Here, according to the set output power, the inverter circuit included in the circuit unit converts the DC voltage of the battery 21 into AC and outputs it from the lower output terminal 27. In addition, the interruption circuit provided in the circuit unit prevents the battery 21 from being reversely charged by the system power supply via the lead-in line, and a surge absorption circuit is provided so that surges, spikes, noise, etc. are mixed from the system power supply. To prevent that. Further, based on the calculation result of the arithmetic circuit provided in the circuit unit, the display 26 displays the remaining power of the battery 21 and the power consumption of the building to be constructed as the operating state of the uninterruptible power supply 1. Is displayed.

  The housing 3 is an aluminum box composed of a lid portion 32 and a housing body 33, and the lid portion 32 opens and closes with respect to the housing body 33 via a hinge portion 31. The lid portion 32 is provided with an engaging portion 34, and when the lid portion 32 is closed, the engaging portion 34 is engaged with and fixed to the claw portion 35 of the housing body 33. Further, a notch 36 is provided in the lower part of the lid portion 32 according to the shape of the output terminal 27. On the other hand, the casing main body 33 is provided with a rubber packing at a portion that comes into contact with the lid portion 32 when the lid portion 32 is closed. To do.

  The belt body 4 includes a leather belt main body 41 and a buckle 42 provided at one end thereof. The belt main body 41 has a plurality of holes 44 through which pins 43 of the buckle 42 are inserted and locked. It is formed with. Further, the belt main body 41 is connected by a connecting member 38 provided on the housing main body 33.

  The hanging portion 5 is a metallic plate body provided with a through hole 51 through which a utility pole scaffold or the like can be inserted, and is connected and fixed to the back surface of the housing body 33.

  One end side of the power cable 6 is connected to the output terminal 27 of the control unit 22 via the connector 61, and the other end side is connected to a lead-in wire (not shown) of the building to be constructed via the connection clamp 62. The connector 61 is provided with a rubber cover 63, and in a state where the connector 61 and the output terminal 27 are connected, the connecting portion can be covered with the cover 63 to be waterproof. Further, the connection clamp 62 includes an insertion hole 64 and a knob 65 that are partially opened and through which the lead wire can be inserted. By rotating the knob 65, a screw connected to the knob 65 is inserted into the insertion hole 64. It protrudes, the front-end | tip part of this screw bites into the lead-in wire in the insertion hole 64, and electrically connects the power cable 6 and the lead-in wire.

  Next, a method for using the uninterruptible power supply 1 will be described.

  As shown in FIG. 3, the uninterruptible power supply 1 supplies power via a lead-in wire X to a support that supports the lead-in wire X, for example, a building that is attached to a utility pole Y and has a power failure due to power distribution work or the like. Used to do.

  The uninterruptible power supply 1 is first installed on a work platform of an aerial work vehicle (not shown) in which a worker performing the power distribution work or the like has a work table attached to the tip of a boom that can be swung and extended. The power failure power supply device 1 is loaded and moved to a position near the lead-in line X of the utility pole Y. When the work table reaches a position close to the lead-in line X, the worker selects a scaffold Z suitable for suspending the uninterruptible power supply 1 from the scaffold Z of the utility pole Y. Then, the worker holds the uninterruptible power supply 1, inserts the selected scaffold Z into the through hole 51 of the suspended portion 5, and suspends the uninterruptible power supply 1 on the utility pole Y. Next, the belt main body 41 is wound around the utility pole Y, the pin 43 of the buckle 42 is inserted into the hole 44 and locked, and the uninterruptible power supply 1 is fixed to the utility pole Y. Thereby, the uninterruptible power supply 1 is reliably attached to the utility pole Y by the two attachment means of the hanging part 5 and the belt body 4.

  In this way, the uninterruptible power supply 1 does not need to be secured again, and can be easily installed at a position near the service line X of the building to be constructed, which hinders power distribution work and the like. There is nothing. Moreover, since it installs on a pillar, it is not necessary to arrange | position the monitoring person who monitors an uninterruptible power supply like the case where it installs in an alley, and can also reduce a worker.

  Next, the worker measures the distance from the uninterruptible power supply 1 attached to the utility pole Y to the service line X of the building to be constructed, and selects the power cable 6 having an appropriate length. Then, the connector 61 on one end side of the selected power cable 6 is connected to the output terminal 27 of the control unit 2, and the connection unit is covered with the cover 63. As described above, since the uninterruptible power supply 1 is attached at a position close to the lead-in line X of the building to be constructed, the power cable 6 connected to the lead-in line X can use a relatively short one. The power cable 6 does not interfere with power distribution work. In addition, it is possible to prevent the worker from confusing the power cable 6 with another cable used in power distribution work or the like.

  Subsequently, the worker wears insulating gloves or the like, and connects the connection clamp 62 on the other end side of the power cable 6 connected to the output terminal 27 to the lead-in wire X. Specifically, the connection between the power cable 6 and the lead-in wire X is connected to the knob 65 by inserting the lead-in wire X into the through-hole 64 from a portion where a part of the through-hole 64 is opened and rotating the knob 65. This is done by projecting the screw into the insertion hole 64. When the screw protrudes into the insertion hole 64, the needle portion at the tip thereof penetrates a part of the insulation coating of the lead-in wire X to reach the lead wire in the lead-in wire X, and the lead-in wire X and the power cable 6 are electrically connected. The

  In this state, the operator opens the lid portion 32 of the uninterruptible power supply 1 and operates the changeover switch 25 of the control unit 2 to set the output power suitable for the building to be constructed. Then, the main switch 24 of the control unit 2 is turned on. Thereby, the uninterruptible power supply 1 converts the DC voltage of the battery 21 into the same AC voltage as the system power supply and supplies it to the lead-in wire X side when the system power supply is in a power outage state due to power distribution work or the like. On the other hand, when the remaining amount of the battery 21 is reduced during power distribution work or the like, it is possible to continue supplying power to the lead-in wire X for a longer time by replacing the batteries 21 one by one. .

  When the power distribution work or the like is completed, the worker turns off the main switch 24, removes the connection clamp 62 from the lead-in wire X, and repairs the insulating coating of the lead-in wire X damaged by the needle portion with an insulating tape or the like.

  Finally, the operator opens the pin 43 of the buckle 42 from the hole 44, removes the belt main body 41 from the utility pole Y, lifts the uninterruptible power supply 1 suspended from the scaffold Z, and lifts it from the scaffold Z. The uninterruptible power supply 1 is accommodated in the work platform of the work vehicle. Thus, according to the uninterruptible power supply 1 of this embodiment, not only the attachment to the utility pole Y is easy and reliable, but the removal from the utility pole Y can also be performed easily, and a work burden is reduced. be able to.

  Although one embodiment of the present invention has been described above, the present invention is not limited to this. For example, the belt to which the housing is attached is not limited to a leather belt body provided with a buckle as shown in the figure, and may be attached to a support by connecting both ends of a rubber string with hooks or the like.

The perspective view which shows the external appearance of the uninterruptible power supply of embodiment. The figure which shows the inside of the uninterruptible power supply of embodiment. The figure which shows the use condition of the uninterruptible power supply of embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Uninterruptible power supply device, 2 ... Backup power supply, 3 ... Housing, 4 ... Belt body (attachment means), 5 ... Suspension part (attachment means), 6 ... Electric power cable (connection means), 21 ... Battery, 22 ... Control part 62 ... Connection clamp, X ... Lead-in wire, Y ... Electric pole, Z ... Scaffolding (protrusion part).

Claims (4)

An uninterruptible power supply that supplies necessary power to the building subject to construction via a lead-in line when performing uninterruptible construction,
A housing containing a backup power source for covering the building's demand power for a certain period of time;
Connection means for electrically connecting the backup power supply to the lead-in line;
An uninterruptible power supply comprising an attachment means for detachably attaching the housing to a support that supports the lead-in wire. In the uninterruptible power supply according to claim 1,
The uninterruptible power supply apparatus, wherein the attachment means is a belt body that can wind the casing around the support body. In the uninterruptible power supply according to claim 1 or 2,
An uninterruptible power supply apparatus comprising: a suspension portion capable of suspending the housing from a projecting portion of the support body as the attachment means. In the uninterruptible power supply according to any one of claims 1 to 3,
The uninterruptible power supply apparatus, wherein the connection means includes a power cable and a connection clamp that detachably connects the power cable to the lead-in wire.

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