JP2016200875A - Power line device of rack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power line device of racks allowing a connection failure occurring in a connection part between power lines to be easily detected even when the power lines for supplying power to apparatuses in the racks are disposed along a rack column above the racks.SOLUTION: Power lines 3 are disposed along a rack column above racks 2, the power lines 3 are disposed while being stored in ducts 11, the power lines 3 have a connection part correspondingly to the connection between the ducts 11 in a midway, an electric cable 19 for obtaining voltage information of the power lines 3 is connected to the connection part. A connection failure detection device is installed which detects a connection failure between the power lines 3 on the basis of the voltage information of the power lines 3 at an end of the rack column and voltage information from the electric cable 19.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a power line device in which a power line is provided above a rack row in order to supply power to a rack row in which a plurality of racks in which electronic devices such as servers are housed are arranged. The present invention relates to a power line device for a rack having a function of detecting a connection failure.

In a data center with a large number of racks containing servers, the floor is doubled to form a free access floor to accommodate communication lines and power cables, and to cool individual rack rows The form utilized as a cooling duct is widely adopted.
However, as the amount of heat generated by communication equipment increases, the free access floor is mainly used as a cooling duct for cooling individual rack rows, and the power lines with heat generation are arranged on the ceiling or rack. A configuration has been proposed in which power is supplied to the server from above to improve cooling efficiency (see, for example, Patent Document 1).
On the other hand, there is a connection failure detection device that detects a connection failure in a power line connecting portion. For example, Patent Document 2 discloses a circuit breaker in which a connection failure detection circuit is incorporated, and detects a connection failure that occurs at the connecting portion between the first metal fitting and the second metal fitting based on potential difference information between the two. Yes.

JP2012-104008A Japanese Patent No. 5117908

In the form in which the power line is disposed above the rack, an area where the free access floor can be used as a cooling duct can be widened, so that efficient cooling is possible.
However, with regard to the arrangement of the power supply lines, the work of arranging the power supply lines on the rack becomes a high place and the wiring route becomes long, so that it takes more time than the work to be installed in the free access floor. There was a problem that the burden on the contractor increased. Furthermore, since the connecting portion between the power supply lines is also at the top of the rack, it is difficult to recognize when a connection failure occurs, and maintenance is troublesome.

  Therefore, the present invention has been made in view of such problems, and even if power supply lines for supplying power to equipment in the rack are arranged along the rack row at the top of the rack, It is an object of the present invention to provide a rack power line device that can easily detect a connection failure occurring in a section.

In order to solve the above-described problems, the invention according to claim 1 is directed to a rack row in which a plurality of racks containing electronic devices are arranged, and power lines for supplying power to the equipment in the rack are provided along the rack row. A power line device for a rack that is arranged at the top of the rack and supplies power to each electronic device by drawing a power supply line branched from the power line for each rack into the rack. The power line is accommodated in a duct. In addition, the power line has a connection portion in accordance with the connection of the duct, and a sensor for obtaining the voltage information of the power line is installed in the connection portion. The voltage information and sensor of the power line at the end of the rack row And a connection failure detecting device for detecting a connection failure of the power supply line based on the voltage information from.
According to this configuration, since the connection failure detection device that detects the connection failure from the voltage information of the power supply line is provided, even if a large number of connecting portions are provided on the power supply line arranged at the upper part of the rack, This can be detected, and it is possible to prevent a situation where the supply of power stops due to heat generation or disconnection of the connecting portion.

In the invention according to claim 2, a power supply line for supplying power to the equipment in the rack is arranged at the upper part of the rack along the rack row with respect to the rack row in which a plurality of racks containing electronic devices are arranged. A power line device for a rack that feeds power to each electronic device by drawing a power supply line branched from the power line for each rack into the rack. The power line is housed in a duct and is connected to the connection of the duct on the way The power supply line also has a plurality of connecting parts, and a sensor for obtaining the voltage information of the power supply line is installed in the connecting part, and the connection of the power supply line is made based on the voltage information of any two places among the plurality of sensors. It has a connection failure detection device for detecting a failure.
According to this configuration, since the connection failure detection device that detects the connection failure from the voltage information of the power supply line is provided, even if a large number of connecting portions are provided on the power supply line arranged at the upper part of the rack, This can be detected, and it is possible to prevent a situation where the supply of power stops due to heat generation or disconnection of the connecting portion.

According to a third aspect of the present invention, in the configuration according to the first or second aspect, the power line is formed of a copper bar formed in a strip shape, and the connecting portion is in a state in which ends of the copper bars to be connected are attached to each other. The both butted copper bars are sandwiched by a sandwiching member made of a conductive member from the side, and the sensor is provided on the sandwiching member.
According to this configuration, the power supply line can be connected by a simple operation of holding operation, the sensor can be attached by the connection operation, and the apparatus can be configured by a simple operation.

According to a fourth aspect of the present invention, in the configuration according to the third aspect, the duct and the copper bar are connected and extended according to the number of racks arranged in a row, with a length corresponding to the rack width as a basic unit. Features.
According to this configuration, even if the power supply line is formed of a copper bar, the power supply line can be easily extended according to the number of racks to be arranged, and the power supply line can be easily installed.

  According to the present invention, since the connection failure detection device that detects the connection failure from the voltage information of the power supply line is provided, even if a large number of connecting portions are provided on the power supply line arranged at the upper part of the rack, the connection failure occurs. This can be detected, and it is possible to prevent a situation where the supply of power stops due to heat generation or disconnection of the connecting portion.

It is the schematic which shows an example of the power wire device of the rack which concerns on this invention. It is an external view explanatory drawing of the rack row | line which has arrange | positioned the power wire in the upper part. It is an isometric view explanatory drawing of the duct which accommodated the power wire. It is the perspective view which isolate | separated the connection part of the duct of FIG. It is a side view of a duct.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic view showing an example of a power line device for a rack according to the present invention. 1 is a distribution board, 2 is a rack, 3 is a power line, 4 is branched from the power line 3 and introduced into the rack 2. 6 is a connection failure detection device, 7 is a branch breaker, 8 is an outlet bar provided with a plurality of outlets provided in the rack 2, and 9 is a connecting member arranged at a connecting portion of the power line 3. is there.
FIG. 1 shows a configuration in which three racks 2 are arranged in a row and a connection failure detection device 6 is provided for each rack 2. The power line 3 is provided from the distribution board 1 and extends along the rack row on the top plate 2 a of the rack 2. Moreover, the structure which introduces the two feeders 4 with respect to one rack 2 is shown.

  FIG. 2 is an external explanatory view of the rack row showing a state where the power supply lines 3 are arranged on the rack. As shown in FIG. 2, a frame member 10 for holding the power supply line 3 is arranged on the top plate 2 a of each rack 2 arranged in a row, and is formed by a strip-shaped copper bar 15 through the frame member 10. Ducts 11 accommodating the power supply lines 3 are arranged in parallel along the rack row. The power supply line 3 is constituted by three copper bars constituting a single-phase three-wire electric circuit, and a total of four copper bars 15 including one spare line are accommodated in the duct.

The duct 11 is formed by connecting duct members 110 having a length corresponding to the width of the rack 2, and the duct members 110 are also connected and extended according to the number of rows of the racks 2. Further, the copper bar 15 is also divided into substantially the same length as the duct member 110, and is accommodated in the duct member 110 and connected in accordance with the connection of the duct member 110.
In addition, an opening 12 is provided on the side surface of the duct 11 so as to match the power supply line introduction part 2 b of the rack 2, and the power supply line 4 branched from the power supply line 3 is drawn through the opening 12, Has been introduced.

  The feed line 4 is drawn out via a branch breaker 7, and the branch breaker 7 is installed in a branch box 13. The power supply line 4 is drawn from below the branch box 13 and introduced into the rack 2. 2 shows a configuration in which a backup line is provided on the power line 3 and two circuits are arranged, and two ducts 11 are arranged. Moreover, although the branch box 13 is mounted | worn with respect to all the opening parts 12, the state installed only in one place is shown here. Reference numeral 5 denotes a connection box that accommodates the connection member 9.

3 to 5 are explanatory views of the duct 11, FIG. 3 is a state in which the duct member 110 is connected by the connecting member 9, FIG. 4 is a state in which the connecting member 9 is separated, and FIG. Yes. As shown in FIG. 4, in the connecting portion between the duct members 110, a notch 11 a is provided on the side of the end portion of the duct member 110, and an opening 17 for mounting the connecting member 9 is formed. The copper bar 15 accommodated in the duct member 110 is disposed slightly shorter than the end surface of the duct member 110, and the copper bars 15 face each other with a slight gap when the duct members 110 are brought together. It is configured to
On the other hand, as shown in FIGS. 3 and 4, the copper bar 15 at the end of the duct 11 is connected to an electric wire 16 as a sensor for detecting a voltage. The end of the duct 11 is connected to the power supply line 3 provided from the distribution board 1 or a power supply line to be supplied to another rack row, but is omitted here.

As shown in FIG. 4, the connecting member 9 has four notches 9 a for inserting the copper bars 15 in the back portion, and the four copper bars 15 can be inserted into the notches 9 a so as to be clamped. Yes. Moreover, the electric wire 19 as a sensor which detects a voltage is connected to the front surface. As shown in FIG. 5, a metal clamping piece 18 is disposed inside each notch 9 a, and the connecting member 9 is inserted into the duct 11 from the side, so that both copper bars 15 in an opposed state can be attached. At the same time, the copper bars 15 are connected to each other. The electric wire 19 is connected to the clamping piece 18 by screwing.
FIG. 3 shows the connected state as described above, and the electric wires 16 and 19 are connected to the connection failure detection device 6 as shown in FIG.

The connection failure detection operation of the power line device of the rack configured as described above is as follows. However, for convenience of explanation, the three connection failure detection devices 6 shown in FIG. 1 are designated as the first detection device 6a, the second detection device 6b, and the third detection device 6c from the upstream side close to the distribution board 1, and the duct 11 The three duct members 110 constituting the are described as a first duct member 110a, a second duct member 110b, and a third duct member 110c from the upstream side.
As shown in FIG. 1, the first detection device 6a is connected from the voltage information of the copper bar 15 itself accommodated in the first duct member 110a and the voltage information of the first connecting member 9 to which the copper bar 15 is connected. Defect occurrence is determined. Therefore, it can be recognized from this determination that a connection failure has occurred between the copper bar 15 in the first duct member 110 a and the first connection member 9.

Moreover, the 2nd detection apparatus 6b acquires the voltage information of the connection member 9 of the both ends of the 2nd duct member 110b, and determines a connection failure generation | occurrence | production. Therefore, it can be recognized from this determination that a connection failure has occurred in at least one of the connecting portions at the left and right ends of the copper bar 15 in the second duct member 110b.
And the 3rd detection apparatus 6c determines a connection failure from the voltage information of the 2nd connection member 9 to which the copper bar 15 accommodated in the 3rd duct member 110c was connected, and the voltage information of the copper bar 15 itself. ing. Therefore, it can be recognized from this determination that a connection failure has occurred between the copper bar 15 in the third duct member 110 c and the second connection member 9.

As described above, even if a large number of connecting portions are provided on the power supply line 3 disposed on the upper portion of the rack 2, it can be detected when a connection failure occurs, and heat is generated or disconnected to supply power. The situation where it stops can be prevented.
Further, the connection by the connecting member 9 can connect the power supply line 3 by a simple operation of holding operation, and the electric wire 19 for detecting the voltage can be attached by the connection operation, and the apparatus can be configured by a simple operation.
Furthermore, even if the power supply line 3 is composed of the copper bar 15, the length of the copper bar 15 is made substantially equal to the width of the rack 2, so that the power supply line 3 can be easily extended according to the number of racks 2 to be arranged. The power line 3 can be easily installed.

In the above-described embodiment, the connection failure detection device 6 is arranged for each duct member 110. However, the voltage detection unit is not provided in the middle of the connected ducts 11, but the connected ducts 11 are rack rows. Alternatively, only one connection failure detection device 6 may be arranged. In this case, the determination is made based on the voltage information at the two ends of the duct 11, but it can be recognized that a connection failure has occurred at any location of the connected ducts 11.
Further, the connection failure detection device 6 may be installed on the rack top plate 2a or in any part of the rack row. At that time, an alarm buzzer for notifying the occurrence of connection failure is collectively displayed in a distribution board, management room, etc. It should just install in.

  2 .... Rack, 3 .... Power line, 6 .... Connection failure detection device, 9 .... Connecting member, 11 .... Duct, 15 .... Copper bar, 16 .... Wire (sensor), ... Nipping member), 19 .. Electric wire (sensor), 110 .. Duct member.

Claims (4)

A power supply line for supplying power to the equipment in the rack is arranged at the top of the rack along the rack row with respect to the rack row in which a plurality of racks containing electronic devices are arranged. A power line device of a rack that draws a power supply line branched from the power line into the rack and supplies power to each electronic device,
The power supply line is accommodated in a duct, and the power supply line has a connection part along with the connection of the duct, and a sensor for obtaining voltage information of the power supply line is installed in the connection part. ,
A power supply line for a rack, comprising: a connection failure detection device that detects a connection failure of the power supply line based on voltage information of the power supply line at an end of the rack row and voltage information from the sensor. apparatus. A power supply line for supplying power to the equipment in the rack is arranged at the top of the rack along the rack row with respect to the rack row in which a plurality of racks containing electronic devices are arranged. A power line device of a rack that draws a power supply line branched from the power line into the rack and supplies power to each electronic device,
The power supply line is accommodated in a duct, and the power supply line has a plurality of connection parts in accordance with the connection of the duct, and a sensor for obtaining voltage information of the power supply line is provided in the connection part. Installed,
A rack power line device, comprising: a connection failure detection device that detects a connection failure of the power supply line based on voltage information at any two of the plurality of sensors. The power line is made of a copper bar formed in a strip shape,
The connecting portion is formed by sandwiching both of the butted copper bars by a sandwiching member made of a conductive member from the side in a state where the ends of the copper bars to be coupled are brought together.
3. The rack power line device according to claim 1, wherein the sensor is provided on the clamping member. 4. The power line device for a rack according to claim 3, wherein the duct and the copper bar are connected and extended in accordance with the number of the racks arranged in a row with a length corresponding to a rack width as a basic unit. .

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