Direct-current power supply drawer

Abstract

The utility model relates to a direct-current power supply drawer, which comprises a drawer assembly, a direct-current power supply module, a wire inlet plug-in, a wire outlet plug-in, a communication plug-in and a cooling fan, the wire inlet plug-in, the communication plug-in, the cooling fan and the wire outlet plug-in are arranged behind the drawer assembly, and the direct-current power supply module is arranged on the drawer assembly. The wire inlet plug-in, the circuit breaker protector, the direct current power supply module and the wire outlet plug-in are electrically connected in sequence, and an operating handle for connecting or disconnecting the electric connection between the circuit breaker protector and the direct current power supply module is arranged on a switch-on and switch-off mechanism of the circuit breaker protector. The wire inlet plug-in, the communication plug-in, the cooling fan and the wire outlet plug-in are sequentially installed behind the drawer assembly, and the direct-current power supply module corresponds to the cooling fan. The direct-current power supply cabinet is simple in structure, convenient to install and use, reliable, good in safety, good in ventilation and heat dissipation effects and long in service life, and the whole direct-current power supply cabinet does not need to be powered off when a certain direct-current power supply drawer is installed and maintained.

Description

Technical Field

[0001] The present application relates to a direct current power supply drawer, and in particular to a drawer-type direct current power supply unit capable of achieving push-pull plug-in connection with a direct current power supply cabinet. Background Art

[0002] A DC power drawer is a power supply device that can provide a stable DC voltage. It is in the shape of a drawer and works by plugging into a DC power cabinet. The DC power module in the prior art needs to turn off the main power switch of the entire DC power cabinet during maintenance and replacement, so the remaining DC power modules that are not broken or do not need maintenance must also be turned off, which greatly affects the actual work. In addition, the design of the input and output plug-ins is unreasonable, resulting in serious arcing and easy burning of the plug-ins. Summary of the invention

[0003] The technical problem solved by the present application is to overcome the above-mentioned deficiencies in the prior art and to provide a DC power supply drawer which does not require the entire DC power supply cabinet to be powered off during installation and maintenance.

[0004] The technical solution adopted by the present application to solve the above technical problems is: a DC power supply drawer, including a drawer assembly, a DC power supply module, an incoming line plug-in, an outgoing line plug-in, a communication plug-in, and a cooling fan, wherein the incoming line plug-in, the communication plug-in, the cooling fan, and the outgoing line plug-in are installed behind the drawer assembly, and the DC power supply module is installed on the drawer assembly, and the characteristic is that: a circuit breaker is also provided, the incoming line plug-in, the circuit breaker, the DC power supply module, and the outgoing line plug-in are electrically connected in sequence, and the opening and closing mechanism of the circuit breaker is provided with an operating handle for connecting or closing the electrical connection between the circuit breaker and the DC power supply module. Through the above design, the present application enables that when a DC power supply drawer needs to be installed or replaced, the input power supply can be disconnected through the opening and closing mechanism of the circuit breaker, without turning off the power supply of the entire DC power supply cabinet, and will not affect the normal operation of other DC power supply drawers, and then the DC power supply drawer can be installed or maintained, which is convenient, reliable and safe.

[0005] The input plug-in, communication plug-in, cooling fan, and output plug-in described in the present application are installed in sequence behind the drawer assembly to prevent the input plug-in and the output plug-in from interfering with each other. The DC power supply module corresponds to the cooling fan, so that the heat generated by the DC power supply module can be discharged by the cooling fan.

[0006] An air inlet channel is arranged on the front side of the drawer assembly corresponding to the position of the DC power module. The front air directly passes through the DC power module and is then discharged through the cooling fan, thereby further improving the heat dissipation capacity.

[0007] There are three or four air inlet channels arranged side by side, and each air inlet channel is in the shape of an arc grid as a whole, which facilitates ventilation on the one hand and helps prevent dust from entering on the other hand.

[0008] The plugs of the incoming and outgoing line plug-ins in this application are both laminated composite metal plugs. The two plug spring sheets of each plug correspond to and press the busbar (power line) located at the incoming and outgoing line clamping position. They will not age or deform, will not be affected by electric arcs, and have a long service life.

[0009] In the present application, the maximum left-right offset distance of each plug spring piece relative to the center line of the plug is 2 mm and the plug can still work normally, so that each plug can ensure reliable connection when the left-right deviation is no more than 2 mm, reducing the installation accuracy of the DC power cabinet and the vertical accuracy requirements of the input and output lines.

[0010] The drawer assembly described in the present application is provided with an electrical connection indicator light. When the DC power supply drawer is inserted into the DC power supply cabinet, the electrical connection indicator light will light up, making it easy to understand whether the DC power supply drawer is installed in place.

[0011] The present application is also provided with a sealing strip and an upper cover plate. The upper cover plate is installed on the drawer assembly. The sealing strip is arranged between the upper cover plate and the drawer assembly to ensure the overall sealing of the embodiment of the present application, prevent wind from entering from all sides of the upper cover plate, ensure that wind can only enter from the air inlet channel and be discharged by the cooling fan, thereby ensuring that the incoming air passes through the DC power supply module and reduces the temperature of the DC power supply module.

[0012] The plug described in the present application is in a fish mouth shape.

[0013] The present application is also provided with two handles, which are respectively installed on both sides of the front of the drawer assembly to facilitate the pushing and pulling of the DC power supply drawer.

[0014] Compared with the prior art, the present application has the following advantages and effects: simple structure, convenience, reliability and good safety; when installing and maintaining a DC power drawer, there is no need to power off the entire DC power cabinet; the ventilation and heat dissipation effect is good; and the service life is long. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the top view of the structure of the embodiment of the present application after removing the upper cover plate.

[0016] Figure 2 It is a schematic diagram of the front structure of an embodiment of the present application.

[0017] Figure 3 It is a schematic diagram of the structure behind the embodiment of the present application.

[0018] Figure 4 yes Figure 2 Schematic diagram of the left side.

[0019] Figure 5 It is an enlarged schematic diagram of the input and output line structure of the embodiment of the present application.

[0020] Figure 6 It is a schematic diagram of the application of an embodiment of the present application (installed on a DC power supply cabinet).

[0021] In the figure: drawer assembly 1, DC power module 2, incoming line plug-in 3, circuit breaker protector 4, opening and closing mechanism 5, operating handle 6, outgoing line plug-in 7, communication plug-in 8, cooling fan (also air outlet channel) 9, handle 10, air inlet channel 11, sealing strip 12, upper cover 13, plug 14, plug spring sheet 141, incoming and outgoing line clamping position 142, plug center line 143, electrical connection indicator light 15, DC power cabinet 16. DETAILED DESCRIPTION

[0022] The present application will be further described in detail below in conjunction with the accompanying drawings and through examples. The following examples are intended to explain the present application but the present application is not limited to the following examples.

[0023] See also Figure 1 to Figure 6 The embodiment of the present application is provided with a drawer assembly 1, a DC power module 2, an incoming line plug-in 3, an outgoing line plug-in 7, a communication plug-in 8, and a cooling fan 9. The incoming line plug-in 3, the communication plug-in 8, the cooling fan 9, and the outgoing line plug-in 7 are installed behind the drawer assembly 1, and the DC power module 2 is installed on the drawer assembly 1. The design feature of the present application is that a circuit breaker protector is also provided, and a separation and closing mechanism 5 is provided on the circuit breaker protector. The incoming line plug-in 3, the circuit breaker protector 4, the DC power module 2, and the outgoing line plug-in 7 are electrically connected in sequence, wherein the circuit breaker protector 4 is used to protect the safe operation of the embodiment of the present application. The opening and closing mechanism 5 is used to control the power supply and the drawer extraction. When a DC power supply drawer in the embodiment of the present application needs to be installed or replaced, the input power can be disconnected by the opening and closing mechanism 5 to make the drawer in a pull-out state. There is no need to turn off the total power of the entire DC power supply cabinet 16, and it will not affect the normal operation of other DC power supply drawers. Then the DC power supply drawer can be pulled out or installed. An operating handle 6 is provided on the opening and closing mechanism 5. The opening or closing of the opening and closing mechanism 5 is controlled by the operating handle 6, which is convenient and reliable without affecting the normal operation of other DC power supply drawers.

[0024] The input plug-in 3, communication plug-in 8, cooling fan 9, and output plug-in 7 described in the present application are sequentially installed behind the drawer assembly 1 to prevent the input plug-in 3 and the output plug-in 7 from interfering with each other. The DC power supply module 2 corresponds to the cooling fan 9, so that the heat generated by the DC power supply module 2 can be discharged by the cooling fan 9.

[0025] The plugs 14 of the incoming line plug-in 3 and the outgoing line plug-in 7 of the present application are both laminated assembly type (fish mouth shaped) metal plugs, the clamping force increases with the circuit current, will not age and deform, will not be affected by arcing, and have a long service life. Each plug 14 is independently plugged in, and the two plug spring pieces 141 of each plug 14 correspond to the busbars (power lines, three incoming line plugs, corresponding to the three-phase power lines of the mains power grid; two outgoing line plugs, corresponding to the positive and negative power lines of the DC power supply output, respectively) that are pressed against the incoming and outgoing line clamping positions 142, and are not involved with each other. The maximum offset distance of each plug spring piece 141 relative to the center line 143 of the plug is 2mm, and it can still maintain the elastic force pressing against the center line 143 of the plug, so that each plug can ensure reliable plug-in, reducing the installation accuracy of the DC power cabinet and the vertical accuracy requirements of the incoming and outgoing lines.

[0026] The DC power supply module 2 of the present application can be replaced by a different manufacturer according to the needs of the owner, and the corresponding front panel openings can be replaced according to different sizes without affecting the overall layout of the DC power supply cabinet.

[0027] Electrical connection indicator light 15: When the DC power supply drawer is plugged in, the indicator light will be on, regardless of whether the circuit breaker 4 supplies power to the DC power supply module 2.

[0028] The communication plug-in 8 of the present application is mainly used for connecting the DC power modules in different DC power drawers, so that all the DC power modules in the DC power cabinet can be combined into an integral power supply to achieve unified control.

[0029] The present application is also provided with a sealing strip 12 and an upper cover plate 13. The upper cover plate 13 is installed on the drawer assembly 1. The sealing strip 12 is arranged between the upper cover plate 13 and the drawer assembly 1 to ensure the overall sealing of the present application embodiment, prevent wind from entering from all sides of the upper cover plate, and ensure that wind can only enter from the air inlet channel 11 and be discharged by the cooling fan 9, thereby ensuring that the incoming air passes through the DC power module 2 and reduces the temperature of the DC power module 2. The air inlet channels 11 are three or four arranged side by side, and the air inlet channels 11 are in the shape of a circular arc grid as a whole, which is convenient for ventilation on the one hand and helps prevent dust from entering on the other hand. See Figure 2 Right side.

[0030] The present application adopts modular and standardized design in the design stage, so that it can adapt to different working conditions and processing requirements to facilitate maintenance and upgrading. Parts not described in detail, such as circuit breaker 4, opening and closing mechanism 5, operating handle 6, communication plug-in 8, cooling fan 9, etc., are all prior art and will not be described again.

[0031] The present application can power off and unplug the faulty DC power drawer only by operating the handle 6 without powering off the entire DC power cabinet 16, without affecting normal industrial production. The unplugged DC power drawer can also replace the failed DC power module 2 within a few minutes, and after replacement, the DC power drawer can be plugged back into the DC power cabinet 16 without powering off, and then powered on, without affecting the stable operation of the equipment, saving more maintenance time.

Claims

1. A DC power supply drawer, comprising a drawer assembly, a DC power supply module, an incoming line plug-in, an outgoing line plug-in, a communication plug-in, and a cooling fan, wherein the incoming line plug-in, the communication plug-in, the cooling fan, and the outgoing line plug-in are installed behind the drawer assembly, and the DC power supply module is installed on the drawer assembly, wherein: A circuit breaker protector is also provided, and the incoming line plug-in, the circuit breaker protector, the DC power supply module, and the outgoing line plug-in are electrically connected in sequence. The opening and closing mechanism of the circuit breaker protector is provided with an operating handle for connecting or disconnecting the electrical connection between the circuit breaker protector and the DC power supply module.

2. The DC power supply drawer according to claim 1, characterized in that: The incoming line plug-in, the communication plug-in, the cooling fan and the outgoing line plug-in are sequentially installed behind the drawer assembly, and the DC power supply module corresponds to the cooling fan.

3. The DC power supply drawer according to claim 2 is characterized in that: An air inlet channel is arranged on the front side of the drawer assembly at a position corresponding to the DC power supply module.

4. The DC power supply drawer according to claim 3 is characterized in that: The number of the air inlet passages is three or four and they are arranged side by side, and each of the air inlet passages is in the shape of an arc grid as a whole.

5. The DC power supply drawer according to claim 1 is characterized in that: The plugs of the incoming line plug-in and the outgoing line plug-in are both laminated composite metal plugs, and the two plug spring sheets of each plug correspond to and press the busbar located at the incoming and outgoing line clamping position.

6. The DC power supply drawer according to claim 5, characterized in that: The maximum left-right offset distance of each plug spring piece relative to the center line of the plug is 2 mm.

7. The DC power supply drawer according to any one of claims 1 to 6, characterized in that: The drawer assembly is provided with an electrical connection indicator light.

8. The DC power supply drawer according to claim 1, characterized in that: A sealing strip and an upper cover plate are also provided. The upper cover plate is installed on the drawer assembly, and the sealing strip is arranged between the upper cover plate and the drawer assembly.

9. The DC power supply drawer according to claim 5, characterized in that: The plug is in a fish mouth shape.

10. The DC power supply drawer according to claim 1, characterized in that: Two handles are also provided, and the two handles are respectively installed on both sides of the front of the drawer assembly.

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