CN217010085U - A high-current DC power distribution cabinet - Google Patents

Abstract

The utility model relates to a large-current direct-current power supply distribution cabinet which comprises a case, wherein an anti-reflection diode, a direct-current filter capacitor, a cooling fan, a wire inlet large-current terminal, a collecting device and a current Hall sensor are arranged in the case; the collecting device is arranged in the middle of the case, anti-reverse diodes are arranged on the left side and the right side of the collecting device respectively, the anti-reverse diodes are provided with radiators, a current Hall sensor is arranged above the anti-reverse diodes, a row of direct current filter capacitors are arranged behind the collecting device, and a row of incoming line heavy current terminals are arranged on the rear end face of the case. The intelligent energy data acquisition system is an intelligent module which is used for comprehensively acquiring all energy data aiming at the tail end of the energy source of a data center machine room; and high-precision measurement data are provided for a terminal energy monitoring system.

Description

A high current DC power distribution cabinet

technical field

The utility model relates to the technical field of power supply, in particular to a high-current DC power distribution cabinet.

Background technique

High-current DC power supply is a complex system of communication, power communication high-frequency switching DC power supply DC power supply using -48V, typical power communication DC power supply power system structure from DC power supply AC power communication parts, rectifiers, accessories, batteries and as required The combination.

Each standard rack (or control cabinet or control box) needs to be installed with a power distribution unit (PDU or TRU) to provide power for various devices. For many years, power distribution has been accomplished by using rail-mounted ordinary air switches (circuit breakers), which are respectively connected to busbars and output terminals with wires, but such power distribution units have the following problems: Power distribution units The connection method between the modules and the connection of the connectors used are not firm, and the wiring of the tangent harness is messy; the resulting connectors fall off or the wiring is disordered, resulting in a short circuit of the power supply. The use of the distributor also increases the demand for the space used in the computer room, and is not conducive to the maintenance and management of the computer room by the maintenance personnel; the replacement and maintenance of the circuit breaker involves the disconnection and wiring, which is very inconvenient; the blind configuration of the circuit breaker often causes waste, etc.

Utility model content

The purpose of the utility model is to overcome the above-mentioned deficiencies and provide a high-current DC power distribution cabinet, which is an intelligent module that comprehensively collects all energy data for the energy terminal of the data center computer room; provides high-precision measurement data for the terminal energy monitoring system, and passes RS485 Communication uploads data to the background environmental monitoring system to achieve real-time monitoring of the entire power distribution system and management of operation quality; help users optimize network data centers, strengthen energy management, and improve server rack operation efficiency; it is mainly used in DC Power supply and other important customers such as data centers or industrial enterprises, provide power distribution, distribution circuit protection, metering, management, and computer grounding services for important equipment such as network servers; at the same time, they are installed in network cabinets. Common network cabinets of various standards.

The purpose of this utility model is achieved in this way:

A high-current DC power distribution cabinet includes a chassis, and the chassis is provided with an anti-reverse diode, a DC filter capacitor, a cooling fan, a high-current terminal for incoming lines, a collection device and a current Hall sensor; the collection device is arranged in the In the middle position in the chassis, anti-reverse diodes are respectively provided on the left and right sides of the collection device, and both the anti-reverse diodes are provided with radiators. A current Hall sensor is arranged above the anti-reverse diodes. A row of DC filter capacitors is arranged at the rear, and a row of incoming high-current terminals is arranged at the rear end of the chassis; a row of miniature circuit breakers is arranged at the front end of the casing, and a row of micro circuit breakers is arranged on the left and right sides of the miniature circuit breaker respectively. For DC molded case circuit breakers, two sets of left and right single-core outgoing high-current terminals are arranged above the incoming high-current terminals on the rear face of the chassis, and two DC surge protections are arranged between the two sets of single-core outgoing high-current terminals. The two-way DC surge protector is provided with two-way surge protection miniature circuit breakers, and the rear surface of the chassis is also provided with a communication terminal and a DC12V output terminal.

Further, a lower part of the rear end surface of the case is provided with a recess, and a row of incoming high-current terminals is arranged at the recess.

Further, a cooling fan is installed at the rear end of the radiator of the anti-reverse diode.

Further, a row of five-hole sockets is arranged below the DC molded case circuit breaker, and a C10A miniature circuit breaker is arranged on one side of the five-hole sockets.

Further, a row of indicating devices is arranged above the DC molded case circuit breaker, which represents the power supply status of the incoming line input power supply and the input reverse reverse connection alarm indication.

Further, a start-stop button is also provided on the front face of the case for turning on and off the tripping function of the circuit breaker.

Further, a row of eight outgoing shunt power indicator lights is arranged above the single-core outgoing high-current terminal.

Further, a plurality of DC C19 sockets are also provided on the rear surface of the chassis.

Further, the bottom surface of the case is provided with two honeycomb hole arrays, and each honeycomb hole array includes a plurality of honeycomb inlet and outlet air holes for heat dissipation.

Further, at least one detachable mounting plate is also provided on the bottom surface of the case for maintenance.

Compared with the prior art, the beneficial effects of the present utility model are:

(1) The utility model is generally used in the existing standard network cabinets. In the limited installation space, the required functional modules are arranged to realize the installation space of 345mm high x 886mm wide x 1154mm deep, and the width and depth directions are affected by the cabinet size. The limit is not increased, the height direction is not increased to save the installation space of the server, the structure is compact, and the assembly is convenient.

(2) The DC input branch of the utility model: a total of 4 channels of DC 395V, 770A input, each 2 channels of incoming lines realize the redundant anti-reverse connection function through power diodes, forming a system with completely independent use of the A and B channels, The input positive and negative stages can be connected to a flexible cable of up to 240mm²; AC input split: 220VAC, 50Hz, single-phase three-wire system, with 10A input switch.

(3) The utility model has a built-in DC filter capacitor to filter the incoming line input.

(4) The utility model has 8 high-power equipment outputs, each with a load capacity of 70kW, and the output interface is in the form of a 200A single-core quick-plug connector male; the utility model has 8 low-power equipment outputs, each 3kW belt load capacity, the output interface is in the form of a C19 socket with a lock; for all outputs, an independent switch or fuse is configured for short-circuit protection.

(5) The utility model can monitor the incoming line current, voltage and output shunt current, can collect the temperature and humidity of the air inlet, can collect the opening and closing state of the switch or fuse, can collect the state of the cooling fan stop feedback, can collect In the failure state of the surge protector, the switch shunt tripping can be controlled separately through the protocol, and this function can be shielded on the hardware. The PDM operating status indicator can be controlled through the protocol. When it is normal, it glows green, and when it is abnormal, it glows red. At the same time, the parameters can be transmitted to the background monitoring through the 485 communication interface.

(6) The utility model is provided with a surge protector, which has backup switch protection and can monitor the failure state of the surge protector.

(7) The utility model has the auxiliary function of operation and maintenance. It has 4 national standard 10A five-hole sockets, and provides AC 220V single-phase power for debugging and operation and maintenance personnel; it has 12VDC output terminals for power distribution of decorative light strips. The load capacity is 12W, and the fan can be maintained on site, and the power diode can be maintained on site.

(8) The internal control power supply of the utility model adopts a dual power supply mode, which improves the reliability.

(9) Each incoming line of the utility model has a reverse connection alarm.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

Figure 2 is a front view of the utility model.

Figure 3 is a rear view of the utility model.

Figure 4 is a side view of the utility model.

FIG. 5 is a top view of the utility model.

Figure 6 is a bottom view of the utility model.

FIG. 7 is a circuit schematic diagram of the utility model.

in:

Start-stop button 1, 32A/2P miniature circuit breaker 2, five-hole socket 3, C10A miniature circuit breaker 4, DC molded case circuit breaker 5, indicating device 6, anti-reverse diode 7, DC filter capacitor 8, cooling fan 9, input Line high-current terminal 10, single-core outgoing high-current terminal 11, DC C19 socket 12, outlet shunt power indicator 13, surge protection miniature circuit breaker 14, DC surge protector 15, AC input plug-in terminal 16, communication Terminal 17 , DC12V output terminal 18 , acquisition device 19 , current Hall sensor 20 , honeycomb inlet and outlet air holes 21 , and mounting plate 22 .

Detailed ways

In order to better understand the technical solutions of the present invention, the following will be described in detail with reference to the relevant figures. It should be understood that the following specific embodiments are not intended to limit the specific implementation aspects of the technical solutions of the present invention, but are merely applicable implementation aspects of the technical solutions of the present invention. It should be noted that the description of the positional relationship of each component in this article, such as the fact that part A is located above part B, is based on the description of the relative position of each component in the figure, and is not intended to limit the actual positional relationship of each component.

Example 1:

Referring to Fig. 1-Fig. 7, Fig. 1 is a schematic structural diagram of the present utility model. As shown in the figure, the utility model relates to a high-current DC power distribution cabinet, which includes a chassis, and the chassis is provided with an anti-reverse diode 7, a DC filter capacitor 8, a cooling fan 9, an incoming high-current terminal 10, A collection device 19 and a current Hall sensor 20; the collection device 19 is arranged in the middle of the chassis, the left and right sides of the collection device 19 are respectively provided with anti-reverse diodes 7, and both sides of the anti-reverse diode 7 are provided with A radiator, a cooling fan 9 is installed at the rear end of the radiator; a current Hall sensor 20 is arranged above the anti-reverse diode 7, and a row of four DC filter capacitors 8 is arranged behind the collection device 19. The bottom of the filter capacitor 8 is fixed on the chassis with screws; the lower part of the rear surface of the chassis is provided with a recess, and a row of incoming high-current terminals 10 is arranged at the recess.

The front end of the chassis is also provided with a start-stop button 1, a 32A/2P miniature circuit breaker 2, a five-hole socket 3, a C10A miniature circuit breaker 4, a DC molded case circuit breaker 5 and an indicating device 6. There are four side-by-side 32A/2P miniature circuit breakers 2 in the middle of the surface, and four DC molded case circuit breakers 5 are respectively arranged on the left and right sides of the 32A/2P miniature circuit breakers 2, and the installation method of the rear connection is adopted. , four five-hole sockets 3 are arranged below the DC molded case circuit breaker 5, a row of eight indicating devices 6 is arranged above the DC molded case circuit breaker 5, and the most There is a C10A miniature circuit breaker 4 on the left side, which is used for the power supply protection and maintenance switch of the five-hole socket 3. The rightmost side of the 32A/2P miniature circuit breaker 2 is provided with a start-stop button 1, which is used to turn on and off Circuit breaker tripping function.

The rear surface of the chassis is also provided with a single-core outlet high-current terminal 11, a DC C19 socket 12, an outlet shunt power indicator 13, a surge protection miniature circuit breaker 14, a DC surge protector 15, and an AC input plug The terminal 16, the communication terminal 17 and the DC12V output terminal 18, above the incoming high-current terminal 10 are provided two sets of left and right single-core outgoing high-current terminals 11, each group of eight single-core outgoing high-current terminals 11 are divided into two rows of four Column arrangement, there are eight DC C19 sockets 12 and two DC surge protectors 15 between the two sets of single-core outgoing high-current terminals 11, the eight DC C19 sockets 12 are arranged in two columns and four rows, and two DC surge protectors are arranged. There are two surge protection miniature circuit breakers 14 above the protector 15, and a row of eight outgoing shunt power indicator lights 13 are arranged above the single-core outgoing high-current terminal 11, which are used to judge and display the shunt circuit breaker. Whether the switch is closed or not, an AC input plug-in terminal 16 , a communication terminal 17 and a DC12V output terminal 18 are arranged above the DC C19 socket 12 .

The bottom surface of the case is provided with two honeycomb hole arrays, each honeycomb hole array includes a plurality of honeycomb inlet and outlet air holes 21 for heat dissipation; two detachable mounting plates 22 are arranged between the two honeycomb hole arrays , for overhaul.

working principle:

1. Design of start and stop button for remote tripping function:

The utility model adds a small button switch in the secondary control loop, which is installed on the front panel of the chassis module, and plays the role of opening and closing the tripping function of the circuit breaker. This function can be turned off or started through this button. The button has two sets of nodes, and one button can control the start-stop function of two-way shunt tripping.

2. Design of miniature circuit breaker for C19 output terminal protection:

Four 32A/2P miniature circuit breakers are installed on the front of the chassis module of the utility model to provide overload and short circuit protection of C19 output terminals, each micro-breaker is connected with 2 C19 output terminals, and a total of 8 C19 output terminals.

3. Five-hole socket design:

The front panel of the chassis module of the utility model is provided with four five-hole sockets, which are used for on-site AC power supply and can be used for on-site operation and maintenance.

4. AC miniature circuit breaker design:

The front panel of the chassis module of the utility model is equipped with a C10A miniature circuit breaker, which is used for power supply protection and maintenance switches for four five-hole sockets.

5. Design of DC output shunt molded case circuit breaker:

The front panel of the chassis module of the utility model is equipped with 8 DC molded case circuit breakers of 2P200A, and the rear wiring installation mode adopted is that the internal copper bars are overlapped, which provides a relatively convenient installation space and electrical safety distance inside the chassis. Each of the 4 molded case circuit breakers is one channel, and a total of two circuits A and B operate independently, that is, the A circuit has 4 DC output shunts, and the B circuit also has 4 DC output shunts. At the same time, the molded case circuit breaker is equipped with an MX shunt release and OF auxiliary contacts, which are used to remotely control the opening and closing of the circuit breaker and obtain the current opening and closing state of the circuit breaker.

6. Design of input power indicating device:

The front panel of the chassis module of the utility model is equipped with 8 indicating devices, which are the power supply status of the incoming line input power supply and the input anti-reverse connection alarm indication. Power supply 1 reverse connection alarm, A channel input power supply 2, A channel input power supply 2 reverse connection alarm, B channel input power supply 1, B channel input power supply 1 reverse connection alarm, B channel input power supply 2, B channel input power supply 2 reverse connection alarm ;

The working power of the indicator light and buzzer used in this part is DC24V. Since the DC input voltage range of this system is 280V-420V, there is no indicator light and buzzer with such a high voltage. The four inputs are respectively equipped with a wide range DC input switching power supply, output DC24V, to 4 DC24V intermediate relay coils;

At the same time, the AMC16Z-ZD main module adopted by the utility model determines whether the incoming power supply is reversely connected by judging the input current direction, and triggers the DO output action after the reverse connection, and the DO dry contacts are respectively connected in series to the power supply loop of the DC24 relay coil; The normally open of the intermediate relay is connected to the power indicator light, and the normally closed is connected to the buzzer. The power supply also adopts DC24V output from the switching power supply, that is, when there is voltage and no reverse connection, the input power indicator light is on; when there is voltage and current in the opposite direction, the input voltage The indicator light goes out, and the buzzer for reverse connection sounds; when there is no voltage input, the switch voltage has no output, and the input power indicator light does not light up.

7. Anti-reverse diode and radiator design:

Due to the high input voltage and large current, the anti-reverse diode is arranged in the utility model to meet the requirements of high voltage and large current, and the radiator is customized considering the requirement of internal installation space to meet the heat dissipation problem when the diode is fully loaded.

8. Design of DC filter capacitor:

The utility model adds a DC filter capacitor design to reduce interference and filtering effects, and customizes a 500V DC filter capacitor. Considering the installation space and convenient installation, the bottom screw-type fixing structure is adopted to ensure convenient installation of the capacitor.

9. Cooling fan design:

A cooling fan is installed at the rear of the radiator of the anti-reverse diode of the utility model to blow air and improve the cooling effect. At the same time, the fan has a fault dry contact, which can be connected to a collection module to judge whether the fan is abnormal, so as to achieve the function of maintaining and repairing the fan. Improves the effect of heat dissipation safety and stability.

10. Design of incoming high current terminal:

The utility model has a large current input and external copper bar terminals, which can meet the high current of 770A, and can be connected to two 240mm² cables at the same time. At the same time, the installation space design must be considered. The overall depth of the utility model is considered not too deep. The wiring does not affect the connection of other cables, so the bottom of the chassis module is designed with a recessed design.

11. Design of outgoing high-current DC plug-in:

The rear panel of the chassis module of the utility model is equipped with 16 single-core outgoing 200A high-current terminals, and adopts a quick-plug scheme, which is convenient for installation and maintenance; positive and negative are distinguished by different colors, which is convenient for identification.

12. C19 DC plug-in design:

Eight three-eye DC C19 sockets are installed on the rear panel of the chassis module of the utility model, and the utility model has the function of a belt lock, which improves the reliability of the plug-in.

13. Outgoing shunt power indicator design:

The front of the chassis module of the utility model is provided with a discharge line shunt power indicator light, which can display whether the shunt circuit breaker is closed and whether the output terminal has been electrified, so as to provide a safety warning function; the indicator light adopts DC24 power supply, and the control part It is indicated by the auxiliary contact of the outgoing shunt MCCB to determine whether the outgoing shunt circuit breaker is closed.

14. Design of surge protection miniature circuit breaker:

The rear panel of the chassis module of the utility model is equipped with a 2-way DC surge protection miniature circuit breaker.

15. Design of DC surge protector

The rear panel of the chassis module of the utility model is equipped with 2-channel DC surge protectors, so as to improve the DC circuit surge protection capability.

16. AC input plug-in terminal design:

The input power supply of the AC circuit of the utility model adopts the design of plug-in terminals. After the input current passes through the miniature circuit breaker on the front of the chassis module, it supplies power to the AC five-hole socket on the front of the chassis module to provide AC maintenance power.

17. Communication terminal design:

The rear panel of the chassis module of the utility model is provided with a communication terminal, which provides the communication between the intelligent acquisition module and the background. The communication adopts the RS485 modbus protocol, which can realize the remote data exchange of the chassis, and realize the functions of telemetry, remote communication and remote control.

18. Design of DC12V output terminal:

The rear panel of the chassis module of the utility model is provided with a DC12V output terminal, which is used for power distribution of the decorative light strip, and the total load capacity is 12W.

19. Design of intelligent collection device:

The utility model has a built-in collection device, which can collect the incoming line current, voltage and output shunt current; the temperature and humidity of the air inlet can be collected; the switching state of the switch or the fuse can be collected; Collect the failure status of the lightning arrester; the switch shunt tripping can be controlled separately through the protocol.

20. Design of current Hall sensor:

The circuit of the utility model is equipped with a current Hall sensor, which is used to detect the DC input and output currents.

21. Honeycomb hole design at the bottom of the chassis module:

The bottom surface of the case module of the utility model is provided with honeycomb air inlet and outlet holes, and the radiator and the fan are used for air cooling and heat dissipation.

22. Maintenance plan board design:

The bottom of the chassis module of the utility model is provided with a detachable mounting plate, which is convenient for the replacement of fans and the maintenance and replacement of devices such as diodes.

The above are only specific application examples of the present invention, and do not constitute any limitation to the protection scope of the present invention. All technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a heavy current DC power supply distribution cabinet which characterized in that: the high-voltage direct-current power supply comprises a case, wherein an anti-reverse diode (7), a direct-current filter capacitor (8), a cooling fan (9), an incoming line large-current terminal (10), an acquisition device (19) and a current Hall sensor (20) are arranged in the case; the collecting device (19) is arranged in the middle of the case, anti-reverse diodes (7) are arranged on the left side and the right side of the collecting device (19) respectively, the anti-reverse diodes (7) are provided with radiators, current Hall sensors (20) are arranged above the anti-reverse diodes (7), a row of direct current filter capacitors (8) are arranged behind the collecting device (19), and a row of incoming line heavy current terminals (10) are arranged on the rear end face of the case; be equipped with one row of miniature circuit breaker on the preceding terminal surface of machine case, miniature circuit breaker's the left and right sides is equipped with one row of direct current moulded case circuit breaker (5) respectively, the top of inlet wire heavy current terminal (10) of the rear end face of machine case is equipped with about two sets of single core heavy current terminals (11) of being qualified for the next round of competitions, is equipped with two way direct current surge protector (15) between two sets of single core heavy current terminals (11) of being qualified for the next round of competitions, and two way direct current surge protector (15) tops are equipped with two way surge protection miniature circuit breaker (14), still be equipped with communication terminal (17) and DC12V output terminal (18) on the rear end face of machine case.

2. A high current dc power distribution cabinet according to claim 1, wherein: the lower part of the rear end face of the case is provided with a concave embedding part, and the concave embedding part is provided with a row of incoming line large-current terminals (10).

3. A high current dc power distribution cabinet according to claim 1, wherein: and a heat radiation fan (9) is arranged at the rear end of the heat radiator of the anti-reflection diode (7).

4. A high current dc power distribution cabinet according to claim 1, wherein: the direct current plastic shell circuit breaker (5) is provided with a row of five-hole sockets (3) below, one side of the five-hole sockets (3) is provided with a C10A miniature circuit breaker (4), and the rear end face of the case is also provided with a current input by the alternating current input plug-in terminal (16) which supplies power to the five-hole sockets (3) after passing through the miniature circuit breaker, so that an alternating current maintenance power supply is provided.

5. A high current dc power distribution cabinet according to claim 1, wherein: and a row of indicating devices (6) are arranged above the direct current molded case circuit breaker (5), and the power state and the input of the representative incoming line input power supply are indicated by anti-reverse connection alarm.

6. A high current dc power distribution cabinet according to claim 1, wherein: the front end face of the case is also provided with a start-stop button (1) for starting and closing the tripping function of the circuit breaker.

7. A high current dc power distribution cabinet according to claim 1, wherein: and a row of eight outgoing line shunt power supply indicator lamps (13) are arranged above the single-core outgoing line high-current terminal (11).

8. A high current dc power distribution cabinet according to claim 1, wherein: the rear end face of the case is also provided with a plurality of direct current C19 sockets (12).

9. A high current dc power distribution cabinet according to claim 1, wherein: the bottom surface of machine case is equipped with two honeycomb hole arrays, and every honeycomb hole array contains a plurality of honeycombs and advances exhaust vent (21) for the heat dissipation.

10. A high current dc power distribution cabinet according to claim 1, wherein: the bottom surface of the case is also provided with at least one detachable mounting plate (22) for maintenance.

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