Dual-power switching circuit for CDU water cooling system of data center

Abstract

The utility model discloses a dual power supply switching circuit used for a data center CDU water cooling system, the dual power supply switching circuit comprises a first power supply wire inlet end, a second power supply wire inlet end and a load end, the first power supply wire inlet end and the second power supply wire inlet end are respectively connected with the load end through a first power supply line and a second power supply line; a first monitoring relay and a first control loop are connected beside the first power supply line; a second monitoring relay and a second control loop are connected beside the second power supply line; a first alternating current contactor main contact is arranged at the tail end of the first power supply line, and a second alternating current contactor main contact is arranged at the tail end of the second power supply line; a first alternating current contactor coil in the first control loop is configured to complete turn-off control of a main contact of a first alternating current contactor; and a second alternating current contactor coil in the second control loop is configured to complete turn-off control of a main contact of the second alternating current contactor, so that rapid and effective switching of the power supply is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to data center CDU field especially relates to a double power supply switching circuit for data center CDU water cooling system. BACKGROUND

[0002] The alternating current power supply in the data center CDU water cooling system provides power for the whole water cooling system, and once the power supply has a problem, the whole system operation will stop. Due to the instability of the power grid power supply, overvoltage, undervoltage, phase imbalance and other problems often occur.

[0003] Most of the existing water cooling systems use a single power supply, and when the power supply has a problem, it cannot be switched in time, and power failure will cause significant losses to the system. The ordinary double power supply switching method has high cost and is not easy to maintain. In order to ensure the normal operation of the system, a double power supply switching circuit for data center CDU water cooling system is proposed. UTILITY MODEL CONTENT

[0004] The utility model discloses a double power supply switching circuit for data center CDU water cooling system, realizes two power supply, and switches to the second power supply in time when the power supply fails, avoiding the loss caused by power failure to the system.

[0005] The utility model discloses a double power supply switching circuit for data center CDU water cooling system, realizes two power supply, and switches to the second power supply in time when the power supply fails, avoiding the loss caused by power failure to the system.

[0006] A double power supply switching circuit for data center CDU water cooling system, the double power supply switching circuit includes: first power supply line end, second power supply line end and load end, the first power supply line end and second power supply line end respectively through first power supply line and second power supply line with load end is connected;

[0007] The first power supply line is connected with a first monitoring relay and a first control loop, and the first control loop is connected with a first monitoring relay normally open auxiliary contact, a second AC contactor auxiliary contact and a first AC contactor coil in turn.

[0008] The second power supply line is connected with a second monitoring relay and a second control loop, and the second control loop is connected with a second monitoring relay normally open auxiliary contact, a first AC contactor auxiliary contact and a second AC contactor coil in turn.

[0009] The first power supply line end is equipped with a first AC contactor main contact, and the second power supply line end is equipped with a second AC contactor main contact.

[0010] The first monitoring relay is configured to complete the shutdown control of the first monitoring relay normally open auxiliary contact, and the second monitoring relay is configured to complete the shutdown control of the second monitoring relay normally open auxiliary contact.

[0011] The first AC contactor coil is configured to complete the switching control of the first AC contactor main contact and the first AC contactor auxiliary contact; when the first AC contactor coil is powered, the first AC contactor main contact is closed and the first AC contactor auxiliary contact is opened; when the first AC contactor coil is powered off, the first AC contactor main contact is opened and the first AC contactor auxiliary contact is closed.

[0012] The second AC contactor coil is configured to complete the switching control of the second AC contactor main contact and the second AC contactor auxiliary contact; when the second AC contactor coil is powered, the second AC contactor main contact is closed and the second AC contactor auxiliary contact is opened; when the second AC contactor coil is powered off, the second AC contactor main contact is opened and the second AC contactor auxiliary contact is closed.

[0013] According to a preferred embodiment, the first AC contactor main contact is a normally open contact; and the first AC contactor auxiliary contact is a normally closed contact.

[0014] According to a preferred embodiment, the second AC contactor main contact is a normally open contact; and the second AC contactor auxiliary contact is a normally closed contact.

[0015] According to a preferred embodiment, the first monitoring relay is configured to control the first monitoring relay normally open auxiliary contact to be closed when it is monitored that the first power supply line is normally powered.

[0016] The second monitoring relay is configured to control the second monitoring relay normally open auxiliary contact to be closed when it is monitored that the second power supply line is normally powered.

[0017] According to a preferred embodiment, the first power supply line is provided with a first circuit breaker near the first power supply inlet end; and the second power supply line is provided with a second circuit breaker near the second power supply inlet end.

[0018] According to a preferred embodiment, the first control circuit is provided with a first control circuit circuit breaker; and the second control circuit is provided with a second control circuit circuit breaker.

[0019] According to a preferred embodiment, the first power supply inlet end and the second power supply inlet end are respectively connected with an AC power supply.

[0020] The foregoing main scheme and each further selection scheme of the utility model can be freely combined to form multiple schemes, which are all the schemes that can be adopted and claimed by the utility model. Those skilled in the art can understand that there are multiple combinations according to the existing technology and common knowledge after understanding the scheme of the utility model, which are all the technical schemes claimed by the utility model, and are not listed exhaustively here.

[0021] The utility model discloses the beneficial effect of:

[0022] The application is used for the dual power switching circuit of data center CDU water cooling system, realizes the dual power supply of data center CDU water cooling system load, and realizes the quick and effective cut of power based on simple and effective circuit design. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the circuit schematic diagram of the dual power switching circuit of data center CDU water cooling system of the utility model,

[0024] Among them, 1-first circuit breaker, 2-second circuit breaker, 3-first control loop circuit breaker, 4-second control loop circuit breaker, 5-first AC contactor main contact, 6-second AC contactor main contact, 7-first monitoring relay, 8-second monitoring relay, 9-first monitoring relay normally open auxiliary contact, 10-second AC contactor auxiliary contact, 11-first AC contactor coil, 12-second monitoring relay normally open auxiliary contact, 13-first AC contactor auxiliary contact, 14-second AC contactor coil. DETAILED DESCRIPTION

[0025] The embodiments of the utility model will be described below through specific concrete examples, and the person skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification. The utility model can also be implemented or applied through other different specific embodiments, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0026] It should be noted that: similar signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0027] In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly used when the utility model product is used, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.

[0028] In addition, the terms "horizontal", "vertical", "overhang" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. As "horizontal" only means that it is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] In the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In addition, the present application points out that, in the present application, if the specific structure, connection relationship, position relationship, power source relationship and the like are not specifically written, the structure, connection relationship, position relationship, power source relationship and the like involved in the present application can be known by the skilled in the art on the basis of the prior art without creative labor.

[0031] Embodiment

[0032] Reference Figure 1 As shown in the figure, a dual power supply switching circuit for data center CDU water cooling system is shown, the dual power supply switching circuit includes: first power supply line end, second power supply line end and load end, the first power supply line end and second power supply line end are respectively connected with the load end through the first power supply line and the second power supply line, and the load end of the data center CDU water cooling system is powered through the first power supply line end or the second power supply line end.

[0033] Preferably, the first power supply line end is provided with a first AC contactor main contact 5 for realizing first power supply line shutdown control, and the second power supply line end is provided with a second AC contactor main contact 6 for realizing second power supply line shutdown control.

[0034] Preferably, the first power supply line is connected with a first monitoring relay 7 and a first control circuit, and the first control circuit is connected with a first monitoring relay normally open auxiliary contact 9, a second AC contactor auxiliary contact 10 and a first AC contactor coil 11 in sequence. The first power supply line or the corresponding power supply of the first power supply line is monitored by the first monitoring relay 7 to confirm whether the power supply fails or can normally supply power. The first power supply line on-off control is completed through the first control circuit.

[0035] The first monitoring relay 7 is configured to complete the turn-off control of the first monitoring relay normally open auxiliary contact 9. The first AC contactor coil 11 is configured to complete the turn-off control of the first AC contactor main contact 5 and the first AC contactor auxiliary contact 13; when the first AC contactor coil 11 is powered, the first AC contactor main contact 5 is closed and the first AC contactor auxiliary contact 13 is opened; when the first AC contactor coil 11 is powered off, the first AC contactor main contact 5 is opened and the first AC contactor auxiliary contact 13 is closed.

[0036] Preferably, the first AC contactor main contact 5 is a normally open contact; and the first AC contactor auxiliary contact 13 is a normally closed contact.

[0037] Preferably, the first monitoring relay 7 is configured to control the first monitoring relay normally open auxiliary contact 9 to be closed when it is monitored that the first power supply line is normally powered.

[0038] Preferably, the second power supply line is connected with the second monitoring relay 8 and the second control circuit, and the second control circuit is connected with the second monitoring relay normally open auxiliary contact 12, the first AC contactor auxiliary contact 13 and the second AC contactor coil 14 in sequence. The second monitoring relay 8 is used to monitor the second power supply line or the corresponding power supply of the second power supply line to confirm whether the power supply fails or can normally supply power. The second control circuit is used to complete the on-off control of the second power supply line.

[0039] The second monitoring relay 8 is configured to complete the turn-off control of the second monitoring relay normally open auxiliary contact 12. The second AC contactor coil 14 is configured to complete the turn-off control of the second AC contactor main contact 6 and the second AC contactor auxiliary contact 10; when the second AC contactor coil 14 is powered, the second AC contactor main contact 6 is closed and the second AC contactor auxiliary contact 10 is opened; when the second AC contactor coil 14 is powered off, the second AC contactor main contact 6 is opened and the second AC contactor auxiliary contact 10 is closed.

[0040] Preferably, the second AC contactor main contact 6 is a normally open contact; and the second AC contactor auxiliary contact 10 is a normally closed contact.

[0041] Preferably, the second monitoring relay 8 is configured to control the second monitoring relay normally open auxiliary contact 12 to be closed when it is monitored that the second power supply line is normally powered.

[0042] Preferably, the first power supply line is provided with the first circuit breaker 1 connected with the first power supply line end; and the second power supply line is provided with the second circuit breaker 2 connected with the second power supply line end.

[0043] Preferably, the first control circuit is provided with a first control circuit breaker 3; the second control circuit is provided with a second control circuit breaker 4.

[0044] Preferably, the first power supply line end and the second power supply line end are respectively connected with an alternating current power supply.

[0045] The working process of the dual power supply switching circuit can be:

[0046] Step one: close the first control circuit breaker 3 and the second control circuit breaker 4, then close the first breaker 1, and close the second breaker 2 after the first breaker 1 is closed.

[0047] Step two: after the first breaker 1 and the first control circuit breaker 3 are closed, the first monitoring relay 7 will detect the 1# alternating current power supply, confirm that the power supply has no problem, the first monitoring relay normally open auxiliary contact 9 is closed, the first control circuit is connected, the first alternating current contactor coil 11 is powered on, the first alternating current contactor main contact 5 is closed, and the 1# alternating current power supply is output to the load end.

[0048] Step three: when the first alternating current contactor coil 11 is powered on, the first alternating current contactor auxiliary contact 13 is disconnected, and the second control circuit is disconnected. Forming interlocking, avoiding the possibility of two power supplies outputting at the same time.

[0049] Step four: when the first monitoring relay 7 detects that the 1# alternating current power supply fails, the first monitoring relay normally open auxiliary contact 9 is disconnected, the first control circuit is disconnected, and the first alternating current contactor coil 11 loses power, so that the first alternating current contactor main contact 5 is disconnected.

[0050] Step five: when the first alternating current contactor coil 11 loses power, the first alternating current contactor auxiliary contact 13 is closed, the second monitoring relay 8 detects that the 2# alternating current power supply has no problem, the second monitoring relay auxiliary contact 12 is closed, the second control circuit is connected. The second alternating current contactor coil 14 is powered on, the second alternating current contactor main contact 6 is closed, and the 2# alternating current power supply is output to the load end.

[0051] Step six: when the second alternating current contactor coil 14 is powered on, the second alternating current contactor auxiliary contact is disconnected, and the 1# alternating current power supply is disconnected corresponding to the first control circuit.

[0052] Similarly, when the 2# alternating current power supply fails, it can also be switched to the 1# power supply in the same way.

[0053] The dual power supply switching circuit for the data center CDU water cooling system realizes dual power supply for the data center CDU water cooling system load, and realizes rapid and effective switching of the power supply based on simple and effective circuit design.

[0054] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A dual power switching circuit for a CDU water cooling system of a data center, characterized in that, The double power switching circuit comprises a first power supply line end, a second power supply line end and a load end, and the first power supply line end and the second power supply line end are connected with the load end through a first power supply line and a second power supply line respectively; The first power supply line is connected with a first monitoring relay (7) and a first control circuit, and the first control circuit is connected with a first monitoring relay normally open auxiliary contact (9), a second AC contactor auxiliary contact (10) and a first AC contactor coil (11) in sequence; The second power supply line is connected with a second monitoring relay (8) and a second control circuit, and the second control circuit is connected with a second monitoring relay normally open auxiliary contact (12), a first AC contactor auxiliary contact (13) and a second AC contactor coil (14) in sequence; The first power supply line is provided with a first AC contactor main contact (5) at the end, and the second power supply line is provided with a second AC contactor main contact (6) at the end; The first monitoring relay (7) is configured to complete the off control of the first monitoring relay normally open auxiliary contact (9), and the second monitoring relay (8) is configured to complete the off control of the second monitoring relay normally open auxiliary contact (12); The first AC contactor coil (11) is configured to complete the off control of the first AC contactor main contact (5) and the first AC contactor auxiliary contact (13); when the first AC contactor coil (11) is powered on, the first AC contactor main contact (5) is closed and the first AC contactor auxiliary contact (13) is opened; when the first AC contactor coil (11) is powered off, the first AC contactor main contact (5) is opened and the first AC contactor auxiliary contact (13) is closed; The second AC contactor coil (14) is configured to complete the off control of the second AC contactor main contact (6) and the second AC contactor auxiliary contact (10); when the second AC contactor coil (14) is powered on, the second AC contactor main contact (6) is closed and the second AC contactor auxiliary contact (10) is opened; when the second AC contactor coil (14) is powered off, the second AC contactor main contact (6) is opened and the second AC contactor auxiliary contact (10) is closed.

2. The dual power switching circuit for a data center CDU water cooling system of claim 1, wherein, The first AC contactor main contact (5) is a normally open contact; and the first AC contactor auxiliary contact (13) is a normally closed contact.

3. The dual power switching circuit for a data center CDU water cooling system of claim 1, wherein, The second AC contactor main contact (6) is a normally open contact; and the second AC contactor auxiliary contact (10) is a normally closed contact.

4. The dual power switching circuit for a data center CDU water cooling system of claim 1, wherein, The first monitoring relay (7) is configured to control the first monitoring relay normally open auxiliary contact (9) to be closed when it is monitored that the first power supply line is normally powered; The second monitoring relay (8) is configured to control the second monitoring relay normally open auxiliary contact (12) to be closed when it is monitored that the second power supply line is normally powered.

5. The dual power switching circuit for a data center CDU water cooling system of claim 1, wherein, The first power supply line is provided with a first circuit breaker (1) near the first power supply line end; and the second power supply line is provided with a second circuit breaker (2) near the second power supply line end.

6. The dual power switching circuit for a data center CDU water cooling system of claim 1, wherein, The first control circuit is provided with a first control circuit breaker (3); the second control circuit is provided with a second control circuit breaker (4).

7. The dual power switching circuit for a data center CDU water cooling system of claim 1, wherein, The first power supply line end and the second power supply line end are respectively connected with an alternating current power supply.

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