CN219067924U

CN219067924U - Dual-circuit power supply redundancy power supply device

Info

Publication number: CN219067924U
Application number: CN202320018213.1U
Authority: CN
Inventors: 张宇; 杨辉; 向荣海
Original assignee: Xiaochi Electric Co ltd
Current assignee: Xiaochi Electric Co ltd
Priority date: 2023-01-05
Filing date: 2023-01-05
Publication date: 2023-05-23
Anticipated expiration: 2033-01-05

Abstract

The utility model discloses a double-circuit power supply redundancy power supply device which comprises a base, wherein an installation seat is fixedly installed at the top of the base, a groove is formed in the top of the installation seat, a shell is installed on the inner side of the groove in the top of the installation seat, a power supply mechanism is arranged in the shell, power receiving sockets are arranged on two sides of the power supply mechanism, the outer ends of the power receiving sockets penetrate through the shell, and heat dissipation mechanisms are arranged on the front face and the back face of the installation seat. By adopting the structure, the utility model adds the capacitor energy storage in the design, wherein the stored energy can be used for 5 seconds by the control loop, thereby avoiding the switching time of the relay of 10 milliseconds, successfully realizing the hot standby of two paths of power supplies and having no influence on the operation of the control loop. The double-power-supply switching switch has the advantages that the size and the volume of the double-power-supply switching switch are greatly reduced, the cost is also greatly reduced, and the system operation has higher reliability.

Description

Dual-circuit power supply redundancy power supply device

Technical Field

The utility model belongs to the technical field of frequency converters, and particularly relates to a double-circuit power supply redundant power supply device.

Background

The control system power supply in the high-voltage frequency converter determines the operation reliability of the whole high-voltage frequency converter, so that the control system is often powered by adopting an UP second power supply or a double-circuit power supply mode in the high-voltage frequency converter, and the operation reliability of the high-voltage frequency converter is improved. However, the UP seconds have the problems of short power supply time, unreliable power supply and the like. The double-circuit power supply system is a loop with 2 power supply sources, is commonly used in a use scene requiring two power supplies to be simultaneously provided, and can be started to ensure the normal operation of equipment when one power supply fails. The current common two-way power supply system adopts two-way transformers and utilizes a dual-power supply change-over switch to supply power.

The dual power supply change-over switch is mainly divided into a PC stage and a CB stage. The PC-level dual-power automatic transfer switch is of an integrated structure: the device consists of an interlocking mechanism, a contact arc extinguishing system, a rack and the like, and has the following defects: short-circuit protection electric appliances are generally required to be additionally arranged, the manufacturing cost is high, and the conversion action time can reach 150 milliseconds; the CB-level dual-power automatic transfer switch consists of two molded case circuit breakers, an interlocking transfer mechanism, a frame and the like. The volume is larger and higher, and the switching action is more than 1.5 seconds, so that the existing double-circuit power supply system has inconvenience and defects in the aspects of size, volume, switching time and the like, and needs to be further improved.

Disclosure of Invention

Aiming at the problems in the background art, the utility model aims to provide a double-circuit power supply redundant power supply device so as to solve the problems that the double-circuit power supply system in the prior art is inconvenient and defective in the aspects of size, volume, conversion time and the like.

The technical aim of the utility model is realized by the following technical scheme:

the utility model provides a redundant power supply unit of double-circuit power, includes the base, the top fixed mounting of base has the mount pad, the top of mount pad is seted up flutedly, the shell is installed to the recess inboard at mount pad top, the inside of shell is equipped with power supply unit, power supply unit's both sides all are equipped with the electric socket that connects, the outer end that connects the electric socket runs through the shell, the front and the back of mount pad all are equipped with heat dissipation mechanism, heat dissipation mechanism runs through the mount pad.

Further, as the preferable technical scheme, both ends all threaded connection has fixing bolt around the mount pad, fixing bolt's inner runs through the mount pad and is located the recess inboard and is connected with the front and the back laminating of shell.

Further, as a preferable technical scheme, an anti-skid plate is arranged at the inner end of the fixing bolt, and the fixing bolt is a hand-screwed bolt.

Further, as the preferred technical scheme, power supply mechanism includes first circuit breaker, second circuit breaker, relay, filter capacitor, rectifier bridge and alternating current filter, first circuit breaker, filter capacitor, second circuit breaker, relay and rectifier bridge follow right left fixed mounting in proper order in the shell bottom, alternating current filter fixed mounting is in the top right side of shell.

Further, as the preferred technical scheme, the heat dissipation mechanism comprises heat dissipation windows and heat dissipation holes, the heat dissipation windows are arranged on the two sides of the front surface and the two sides of the back surface of the mounting seat, the heat dissipation fans are rotationally connected inside the heat dissipation windows, and the heat dissipation holes are arranged on the front surface and the back surface of the shell at equal intervals.

Further, as an optimized technical scheme, a heat dissipation opening is formed in the top of the shell, a separation net is arranged in the heat dissipation opening and the heat dissipation window, and the separation net in the heat dissipation window is arranged at the outer end of the heat dissipation fan.

Further, as the preferable technical scheme, the front and the back of the base are fixedly provided with mounting plates, and mounting holes are formed in two sides of the top of each mounting plate.

In summary, the utility model has the following advantages:

firstly, when the equipment normally operates, a user is used for supplying power, and when the user power is lost, the power is automatically switched to the secondary side power supply of the transformer. By adopting the technical scheme, the time for switching the power supply can be reduced to 10 milliseconds, the effect of comparing the switching time of the double-power supply switch is obvious, and the capacitor energy storage is added in the design, wherein the stored energy can be used for 5 seconds by a control loop, so that the hot standby of two paths of power supplies is successfully realized by avoiding the switching time of the relay of 10 milliseconds, and the operation of the control loop is not affected. Compared with the double-power supply change-over switch, the double-power supply change-over switch has the advantages that the size and the volume are greatly reduced, the cost is also greatly reduced, and the system operation has higher reliability;

second, through setting up cooling mechanism for during the use, accessible radiator fan operation, accessible radiator window, louvre and thermovent cooperate, make the inside air velocity of flow of shell accelerate, and then improved the inside heat exchange's of shell ability, adopt simultaneously to screw up the mounting of mount pad inboard recess to the shell with the fixing bolt of formula, only need twist reverse fixing bolt when making need dismantle can, thereby be convenient for the dismantlement maintenance of this device, make this device use more convenient, the equipment work when also being convenient for production and processing simultaneously, make this device have better practicality.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a top view of the present utility model;

fig. 3 is a view showing the construction of the inside of the housing of the present utility model.

Reference numerals: 1. the device comprises a base, 2, a mounting seat, 3, a groove, 4, a shell, 5, a power supply mechanism, 51, a first circuit breaker, 52, a filter capacitor, 53, a second circuit breaker, 54, a relay, 55, a rectifier bridge, 56, an alternating current filter, 6, an electric connection socket, 7, a heat dissipation mechanism, 71, a heat dissipation window, 72, a heat dissipation hole, 73, a heat dissipation fan, 74, a heat dissipation hole, 75, a separation net, 8, a fixing bolt, 9, a mounting plate, 10 and a mounting hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-3, the dual-power redundant power supply device according to the embodiment comprises a base 1, wherein a mounting seat 2 is fixedly mounted at the top of the base 1, a groove 3 is formed in the top of the mounting seat 2, a housing 4 is mounted on the inner side of the groove 3 at the top of the mounting seat 2, a power supply mechanism 5 is arranged in the housing 4, power receiving sockets 6 are respectively arranged on two sides of the power supply mechanism 5, the outer ends of the power receiving sockets 6 penetrate through the housing 4, heat dissipation mechanisms 7 are respectively arranged on the front surface and the back surface of the mounting seat 2, and the heat dissipation mechanisms 7 penetrate through the mounting seat 2.

Example 2

Referring to fig. 1-2, in order to achieve the purpose of improving the convenience of use of the device based on embodiment 1, the mounting seat 2 is innovatively designed in this embodiment, specifically, both front and rear ends of the mounting seat 2 are connected with fixing bolts 8 through threads, inner ends of the fixing bolts 8 penetrate through the mounting seat 2 and are located inside the grooves 3 and are in fit connection with the front and rear surfaces of the housing 4, the inner ends of the fixing bolts 8 are provided with anti-skid plates, and the fixing bolts 8 are hand-screwed bolts; through setting up fixing bolt 8, can be convenient for assist mount pad 2 installation shell 4, make things convenient for the dismouting of shell 4, set up fixing bolt 8 for hand screw type and the tip has the antiskid ribbed tile, can improve easy dismounting and installation stability.

Example 3

Referring to fig. 1-3, in this embodiment, in order to achieve the purpose of improving the practicality and stability of the device based on embodiment 2, the present embodiment innovates the power supply mechanism 5 and the heat dissipation mechanism 7, specifically, the power supply mechanism 5 includes a first circuit breaker 51, a second circuit breaker 53, a relay 54, a filter capacitor 52, a rectifier bridge 55 and an ac filter 56, the first circuit breaker 51, the filter capacitor 52, the second circuit breaker 53, the relay 54 and the rectifier bridge 55 are fixedly installed at the inner bottom of the housing 4 from right to left in sequence, the ac filter 56 is fixedly installed at the right side of the top of the housing 4, the heat dissipation mechanism 7 includes a heat dissipation window 71 and a heat dissipation hole 72, the heat dissipation window 71 is opened at both sides of the front and back of the mounting seat 2, the heat dissipation window 71 is rotationally connected with a heat dissipation fan 73, the heat dissipation hole 72 is equally spaced apart from the front and the back of the housing 4, the top of the housing 4 is opened with a heat dissipation hole 74, the heat dissipation hole 74 and the inside the heat dissipation window 71 are all provided with a partition net 75, the partition net 75 in the housing 71 is fixedly installed at the outer end of the fan 73, the front and the back of the base 1 is fixedly installed with the mounting plate 10 at both sides, and the mounting plate 9 is fixedly installed at both sides of the top 9; by arranging the power supply mechanism 5, the problems that the two-way power supply system in the prior art is inconvenient and defective in terms of size, volume, conversion time and the like can be solved by matching the first circuit breaker 51, the second circuit breaker 53, the relay 54, the filter capacitor 52, the rectifier bridge 55 and the alternating current filter 56 during use, by arranging the heat dissipation mechanism 7, the efficient heat exchange and heat dissipation can be realized by starting the heat dissipation fan 73 during use, air enters the shell 4 through the heat dissipation window 71 and the heat dissipation hole 72, the heat dissipation ventilation capability can be improved by arranging the heat dissipation opening 74 and the separation net 75, and the dustproof protection effect can be further achieved in an auxiliary manner, and by arranging the mounting plate 9 and the mounting holes 10 on two sides of the top of the mounting plate, the device can be conveniently mounted in an auxiliary manner through the mounting holes 10, and the device is convenient to use.

The use principle and the advantages are that: in order to realize the technical scheme, the adopted electrical components have 3 poles and one QF1 of the D-level circuit breaker is the first circuit breaker 51; one of the QF2 circuit breakers having 2 poles and trip type C-stage circuit breaker is the second circuit breaker 53. The coil voltage is AC220v, the contacts are two pairs of open points and two pairs of closed points respectively, and the contact capacity reaches one relay 54 of the rated current of the circuit breaker; one AC filter 56 rated at AC220 v; one rectifier bridge 55 rated at AC220 v; one filter capacitor 52 is selected according to the actual requirement. The rated currents of the components are selected according to the actual load conditions, the circuit breakers QF1 and QF2 are used for respectively switching on and off the secondary side power supply of the transformer and the field power supply of a user, the relay 54 is used for switching the two paths of power supplies, the alternating current filter 56 is used for filtering out harmonic waves in alternating current, the rectifier bridge 55 is used for rectifying the alternating current into direct current, the capacitor is used for filtering and storing energy, and the control loop is kept to run normally when the relay 54 switches the two paths of power supplies. By adopting the technical scheme, the utility model can use a user to supply power when the equipment normally operates, and automatically switch to the secondary side power supply of the transformer when the user power supply loses power. By adopting the technical scheme, the time for switching the power supply can be reduced to 10 milliseconds, the effect of comparing the switching time of the double-power supply switch is obvious, and the capacitor energy storage is added in the design, wherein the stored energy can be used for 5 seconds by a control loop, so that the hot standby of two paths of power supplies is successfully realized by avoiding the switching time of the relay 5410 milliseconds, and the operation of the control loop is not affected. This scheme simple structure compares its size volume of dual supply change over switch and reduces greatly, the cost is also greatly reduced, the system operation has higher reliability, and during the use, through radiator fan 73 operation, can cooperate through radiator window 71, louvre 72 and thermovent 74, make the inside air velocity of air of shell 4 accelerate, and then the inside heat exchange's of shell 4 ability has been improved, adopt simultaneously hand-screw type fixing bolt 8 to assist the installation of mount pad 2 inboard recess 3 to shell 4, only need twist fixing bolt 8 can when making need dismantle, thereby the dismantlement of this device of being convenient for overhauls, make this device use more convenient.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A double-circuit power redundancy power supply unit, its characterized in that: including base (1), the top fixed mounting of base (1) has mount pad (2), recess (3) have been seted up at the top of mount pad (2), shell (4) are installed to recess (3) inboard at mount pad (2) top, the inside of shell (4) is equipped with power supply mechanism (5), the both sides of power supply mechanism (5) all are equipped with electric connection socket (6), the outer end of electric connection socket (6) runs through shell (4), the front and the back of mount pad (2) all are equipped with cooling machanism (7), cooling machanism (7) run through mount pad (2).

2. The dual power redundant power supply apparatus of claim 1 wherein: the front end and the rear end of the mounting seat (2) are respectively connected with a fixing bolt (8) in a threaded mode, and the inner ends of the fixing bolts (8) penetrate through the mounting seat (2) and are located on the inner side of the groove (3) and are connected with the front face and the back face of the shell (4) in a fitting mode.

3. The dual power redundant power supply apparatus of claim 2 wherein: the inner end of the fixing bolt (8) is provided with a antiskid plate, and the fixing bolt (8) is a hand-screwed bolt.

4. The dual power redundant power supply apparatus of claim 1 wherein: the power supply mechanism (5) comprises a first circuit breaker (51), a second circuit breaker (53), a relay (54), a filter capacitor (52), a rectifier bridge (55) and an alternating current filter (56), wherein the first circuit breaker (51), the filter capacitor (52), the second circuit breaker (53), the relay (54) and the rectifier bridge (55) are sequentially and fixedly arranged in the bottom in the shell (4) from right to left, and the alternating current filter (56) is fixedly arranged on the right side of the top of the shell (4).

5. The dual power redundant power supply apparatus of claim 1 wherein: the heat dissipation mechanism (7) comprises a heat dissipation window (71) and heat dissipation holes (72), the heat dissipation window (71) is arranged on the two sides of the front face and the two sides of the back face of the mounting seat (2), the heat dissipation fans (73) are rotationally connected inside the heat dissipation window (71), and the heat dissipation holes (72) are uniformly distributed on the front face and the back face of the shell (4) at equal intervals.

6. The dual power redundant power supply apparatus of claim 5 wherein: the top of shell (4) has seted up thermovent (74), thermovent (74) and the inside of heat dissipation window (71) all are equipped with separates net (75), separate net (75) in heat dissipation window (71) set up in the outer end of radiator fan (73).

7. The dual power redundant power supply apparatus of claim 1 wherein: the front and the back of the base (1) are fixedly provided with mounting plates (9), and mounting holes (10) are formed in two sides of the top of each mounting plate (9).