CN216564623U

CN216564623U - Cabinet fan power supply cabinet capable of supplying power independently

Info

Publication number: CN216564623U
Application number: CN202122482364.6U
Authority: CN
Inventors: 丁立勤; 郑扬帆; 陈咏城; 钟尚文; 肖劲骅; 黄仁彦; 陈维能; 孙超凡; 黄冬梅; 张哲浩
Original assignee: Guangdong Honghaiwan Power Generating Co ltd
Current assignee: Guangdong Honghaiwan Power Generating Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-05-17
Anticipated expiration: 2031-10-15

Abstract

The utility model discloses an independently powered cabinet fan power supply cabinet which comprises a cabinet body, wherein a power supply device is arranged in the cabinet body, the power supply device is connected to an alternating power supply outside a unit to which a system cabinet belongs and is sequentially and electrically connected with a main change-over switch, a first transformer and a plurality of power-on interfaces to form a first direct current circuit, and the power-on interfaces are electrically connected with fans of the system cabinet one by one to form a power circuit, so that the fans of each system cabinet are independently powered. The system cabinet is provided with the independent fan power supply cabinet, so that the system cabinet is independently connected with the fan of each system cabinet, and the fans are provided with power supplies except the system power supply, thereby ensuring the electrical safety of the system unit. In the middle of, fan power supply cabinet's supply circuit adopts dual supply change over switch, still possesses multistage redundancy and fault indication setting, can ensure that the fan lasts the operation to guarantee to the heat dissipation that lasts of rack unit.

Description

Cabinet fan power supply cabinet capable of supplying power independently

Technical Field

The utility model relates to the technical field of electric cabinets, in particular to an independent power supply cabinet fan power supply cabinet.

Background

At present, a large-scale electric unit system usually adopts a redundant power supply, namely, each unit is provided with two power supplies and supplies power to devices such as a controller and a card through a 220VAC to 24VDC power supply module so as to ensure the stability of power utilization, wherein the heat dissipation fans of the system cabinet can directly take power from the 24VDC output of each control station ROP board, that is, the current cabinet fan power supply is derived from the unit system power supply, according to the current power generation scale, the cabinets are basically combined in a cluster mode, each cabinet is matched with 1-2 cooling fans for calculation, a single set of unit system relates to dozens of or even hundreds of cooling fans, if the fans are in fault or a loop is in short circuit, the power supply fault of the unit system is easily caused, the risk of power loss of a certain or even a plurality of control stations can exist, and even the safe operation of the unit is affected in serious cases, so that the electric safety is brought with non-negligible potential safety hazard; furthermore, the above-mentioned power connection operation does not satisfy the requirements of the 'twenty-five key requirements for preventing serious accidents in power production' article 9.1.6, i.e. "strictly forbidding the connection of the non-distributed control system power utilization equipment to the power supply device of the distributed control system".

Therefore, it is necessary to independently supply power to the fans of the cabinets, so as to ensure that the fans cannot share the power supply with the unit system, thereby reducing the possible damage of fan failure to the electrical safety of the system.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to solve the problems in the prior art and provide an independent power supply cabinet for a cabinet fan, wherein an independent power supply is adopted to supply power for a cooling fan of a system cabinet so as to ensure the stable power of a unit system.

The technical effect to be achieved by the utility model is realized by the following technical scheme:

the utility model provides an independent power supply's rack fan power cabinet, includes the cabinet body, the internal power supply unit that installs of cabinet, power supply unit inserts the alternating current power supply outside the affiliated unit of system's rack to connect in proper order with main change over switch, first transformer and a plurality of circular telegram interface and electricity and connect in order to form first direct current circuit, circular telegram interface is connected with the fan of system's rack one by one and is used the electric circuit in order to constitute, thereby supplies power alone for the fan of every system's rack.

Preferably, the fan power supply cabinet is connected to an inter-electronic power supply of the self unit, and the power supply of the fan power supply cabinet is independent of the power supply of the system cabinet.

Preferably, the power supply of the fan power supply cabinet adopts two paths of power supplies, and the power supply device is a double-power switching device.

Preferably, the power supplies of the fan power supply cabinet are respectively a UPS power supply and an APS power supply, which are 220V ac power supplies, and the two power supplies respectively provide electric energy for the dual power supply switching device.

Preferably, the direct current power supply comprises a second direct current circuit, the main change-over switch is arranged in a double-contact mode, the second straight line circuit comprises a second transformer and is electrically connected with the power supply device and the power-on interface, and when the main change-over switch is closed, the first direct current circuit and the second direct current circuit jointly form a main circuit and synchronously supply power to the outside.

Preferably, the first direct current circuit is connected with a first fault indicator lamp through a first relay, and the first fault indicator lamp is turned on when the first transformer has an electric fault; and the second direct current circuit is connected with a second fault indicator lamp through a second relay, and the second fault indicator lamp is turned on when the second transformer has an electrical fault.

Preferably, the power supply system comprises a redundancy circuit, wherein the redundancy circuit comprises a redundancy conversion switch and a redundancy transformer, when the redundancy conversion switch is closed, the redundancy circuit is conducted, and the 220V alternating current power supply is switched into 24V direct current power supply through the redundancy transformer and then flows to the power-on interface.

Preferably, a switching arrangement is adopted between the main circuit and the redundant circuit, and the switching arrangement comprises two forms of manual switching and automatic switching.

Preferably, the power-on interface is connected in parallel with the cooling fan of each system cabinet through a cable, and each power utilization loop operates independently.

Preferably, each of the power utilization circuits is mounted with an air switch.

Compared with the prior art, the utility model has the beneficial effects that:

the system cabinet is provided with the independent fan power supply cabinet, so that the system cabinet is independently connected with the fan of each system cabinet, and the fans are provided with power supplies except the system power supply, thereby ensuring the electrical safety of the system unit. In the middle of, fan power supply cabinet's supply circuit adopts dual supply change over switch, still possesses multistage redundancy and fault indication setting, can ensure that the fan lasts the operation to guarantee to the heat dissipation that lasts of rack unit.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is an external view of a power cabinet of a fan provided in this embodiment;

FIG. 2 is a schematic circuit diagram of the power cabinet of the fan of the present embodiment;

FIG. 3 is a layout diagram of the fan power cabinet of the present embodiment connected to the fan sets of each row of cabinets;

FIG. 4 is a wiring layout diagram of each fan of the present embodiment;

in the figure, 1-cabinet body; 2-a fan set; 21-a fan; 3-a power-on interface; 4-an air switch; l1 — first direct current circuit; s1-a dual power switching device; c1 — first capacitor; d1 — first diode; k1-main transfer switch; PW1 — first transformer; DS 1-first fault indicator light; r1 — first relay; l2 — second dc circuit; k2-redundant diverter switch; PW 2-second transformer; DS 2-second fault indicator light; r2 — second relay; PW 3-third transformer; l3-third dc line; PW 4-fourth transformer; l4-fourth dc line; m-fan motor.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 and 2, the present embodiment provides an independently powered cabinet fan power supply cabinet, including a cabinet body 1, a first dc circuit L1 is installed in the cabinet body 1, the first dc circuit L1 is mainly composed of a dual power switching device S1, a main switch K1, a first transformer PW1, a first diode D1, a first capacitor C1, and a plurality of power-on interfaces 3 in sequence, the fan power supply cabinet of the present embodiment is powered by a power supply independent of a unit to which the system cabinet belongs, specifically, by a UPS power supply and an APS power supply between units, a power panel provides alternating currents of 220 + 230V and 50Hz, after the main switch K1 is closed, the power supply outputs 220V alternating currents through the dual power switching device S1, and then inputs the alternating currents to the first transformer PW1, the first transformer PW1 outputs 24V direct current power filtered by a capacitor C1 to obtain a reliable and stable 24V direct current power supply, thereby supplying the front or back side cooling fan 21 of the system cabinet.

The dual Power switching device S1 is powered by a UPS Power Supply and an APS Power Supply, an ac contactor is used between the UPS and the APS for automatic switching, and the UPS (unified Power System/unified Power Supply) and the APS (active Phase switching) are commonly used in the industry, and can continue to Supply 220V ac Power during Power loss and Power outage in addition to normal Power Supply, so as to continue to maintain normal operation of the load. Switch over the setting between the dual supply, automatic switch over and manual switch over all can, so set up and be out of the consideration of rack fan working property, help guaranteeing its power supply's stability to continuously dispel the heat for the system rack.

With reference to fig. 2, in order to further ensure the continuous power utilization of the fan 21, the present embodiment is provided with a second dc circuit L2, the second dc circuit L2 is used as a standby circuit of the first dc circuit L1, the two dc circuits are arranged in parallel, the second dc circuit L2 includes a second transformer PW2, in this case, the main switch K1 adopts a double-contact arrangement, when the main switch K1 is closed, the first and second dc circuits L1 and L2 form a main circuit together and synchronously supply power to the fan 21, and when the fault of the first transformer PW1 causes an open circuit and a short circuit, the second transformer PW2 continues to operate, thereby ensuring the continuous power supply to the fan 21.

Further, first direct current circuit L1 and second direct current circuit L2 are provided with first trouble pilot lamp DS1 and second trouble pilot lamp DS2 respectively, first trouble pilot lamp DS1 is connected with first transformer PW1 through first relay R1, first trouble pilot lamp DS1 walks the normally closed contact of first relay R1, and first direct current circuit L1 switches on and attracts normally open contact, and when first transformer PW1 broke down, first relay R1 cuts off the power supply, and normally open contact disconnection and attraction return initial normally closed contact, and normally closed contact switches on second direct current circuit L2, triggers first trouble pilot lamp DS1 circular telegram and light to the suggestion staff in time restores. Similarly, the second fault indicator lamp DS2 is conducted with the second dc line L2 through the normally open contact of the second relay R2, and is powered on when the second transformer PW2 fails, so as to prompt a worker to repair the fault in time.

Further, the present embodiment is provided with a redundancy circuit, the redundancy circuit includes a redundancy change-over switch K2 and a redundancy transformer, when the redundancy change-over switch K2 is closed, the redundancy circuit is turned on, and the 220V ac power supply is switched to 24V dc power by the redundancy transformer and flows to the power-on interface 3. Specifically, the redundant circuit includes a third dc line L3 and a fourth dc circuit L4 which are mainly the third transformer PW3 and the fourth transformer PW 4. The redundant circuit and the main circuit can be set to operate alternatively or synchronously, and when the first transformer PW1 or/and the second transformer PW2 fails, the redundant circuit continues to output power for the fan 2, so that the cabinet is prevented from being operated too hot and collapsing.

The redundancy circuit is connected with the double-power-supply switching device S1 through a redundancy change-over switch K2, the redundancy circuit and the main circuit are in parallel connection, when the redundancy change-over switch is closed, the redundancy circuit is conducted, and a 220V alternating-current power supply is switched into 24V direct-current power through the third transformer PW3 and the fourth transformer PW4 and then flows to the electrifying interface 3.

Referring to fig. 3, the power-on interface 3 is divided into two parts, namely a positive electrode and a negative electrode, and the power-on interface 3 is electrically connected with the fan sets 2 of each row of cabinets one by one through flame-retardant cables to form a plurality of parallel power utilization loops, so as to independently supply power to the fan sets of each row of cabinets. In the middle, an air switch 4 is installed before the inlet of each fan set 2, so as to ensure that when an internal fault or overcurrent occurs in a certain fan set 2, the normal operation of other fan sets 2 is not affected.

Referring to fig. 4, according to the above-mentioned prior art, each of the electronic circuits is conducted with the fan set 2 of each row of cabinets, and after the power is introduced into the fan set 2, a plurality of electronic circuits are further disposed at the lower stage, and the electronic circuits are electrically connected with each fan motor M one by one, so as to effectively supply the power to the terminals of the fan set 2. Likewise, in order to prevent the fault from spreading, the fan motors M are each supplied with power in parallel.

In summary, the utility model provides the independent fan power supply cabinet for the system cabinet, so that the system cabinet is independently connected with the fan group of each system cabinet and even a single fan motor, thereby providing power supply except the system power supply for each path of fan and ensuring the electrical safety of the system unit.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, and the scope of protection is still within the scope of the utility model.

Claims

1. The utility model provides an independent power supply's rack fan power cabinet, includes the cabinet body, its characterized in that, the internal power supply unit that installs of cabinet, power supply unit inserts the alternating current power supply outside the affiliated unit of system's rack to be connected in proper order with main change over switch, first transformer and a plurality of circular telegram interface electricity and form first direct current circuit, circular telegram interface is connected with the fan of system's rack one by one and is used the electric circuit in order to constitute, thereby supplies power alone for the fan of every system's rack.

2. An independently powered cabinet fan power cabinet as claimed in claim 1, wherein the fan power cabinet is connected to an inter-electronics power supply of its own unit, the power supply of the fan power cabinet being independent of the power supply of the system cabinet.

3. The independently powered cabinet fan power cabinet of claim 2, wherein the power supply of the fan power cabinet is a dual power supply, and the power supply device is a dual power switching device.

4. An independently powered cabinet fan power supply cabinet as claimed in claim 3, wherein the power supplies of the fan power supply cabinet are UPS power supplies and APS power supplies, which are 220V AC power supplies, and the two power supplies respectively supply power to the dual power switching device.

5. The independently powered cabinet fan power cabinet of claim 1, comprising a second dc circuit, wherein the main switch is configured with dual contacts, the second dc circuit comprises a second transformer and is electrically connected to the power device and the power interface, and when the main switch is closed, the first and second dc circuits together form a main circuit and supply power to the outside synchronously.

6. An independently powered cabinet fan power cabinet as claimed in claim 5, wherein the first direct current circuit is connected to a first fault indicator lamp through a first relay, and the first fault indicator lamp is turned on when the first transformer fails; and the second direct current circuit is connected with a second fault indicator lamp through a second relay, and the second fault indicator lamp is turned on when the second transformer has an electrical fault.

7. The independently powered cabinet fan power cabinet of claim 6, comprising a redundancy circuit comprising a redundancy transfer switch and a redundancy transformer, wherein when the redundancy transfer switch is closed, the redundancy circuit is turned on, and 220V AC power is switched to 24V DC power by the redundancy transformer and flows to the power-on interface.

8. An independently powered cabinet fan power cabinet as claimed in claim 7 wherein switching arrangements between the primary and redundant circuits are provided, including both manual and automatic switching.

9. The independently powered cabinet fan power cabinet of claim 1, wherein the power interface is connected in parallel with the cooling fan of each system cabinet by a cable, and each of the power circuits operates independently.

10. An independently powered cabinet fan power cabinet according to claim 1 wherein each of the power circuits is fitted with an air switch.