Low-voltage power supply cabinet capable of being quickly accessed to external power supply

Abstract

The utility model discloses a low-voltage power supply cabinet capable of being quickly connected to the outside for power supply, which comprises a power supply cabinet body, a current measurement module, a voltage measurement module, an indicator light module and an external power supply module, and an inner cavity of the power supply cabinet body is respectively provided with a measurement prompt cavity, a circuit breaker cavity, an external connection cavity and a grounding cavity from top to bottom. The current measurement module, the voltage measurement module and the indicating lamp module are all arranged in the measurement prompt cavity, the circuit breaker cavity is used for installing a low-voltage circuit breaker, and the external power supply module is arranged in the grounding cavity. Therefore, the power supply vehicle can be quickly connected for power supply in emergency. The low-voltage power supply cabinet capable of rapidly accessing the external power supply has the effect of improving the speed of accessing the external power supply.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage cabinets, in particular to a low-voltage power supply cabinet capable of quickly accessing external power supply. Background Art

[0002] In the existing railway rail transit system, generally a two-way power supply mode is adopted. When one way has a problem, the other way of power supply can replace the power supply in time to ensure the stability of the system. However, sometimes special situations occur. For example, when one way of power supply is under maintenance, only the other way of power supply can be used. At this time, if a fault occurs in the voltage of the other way of power supply, a power supply vehicle needs to be used for supplementary power supply to ensure the operation of the system. However, the connection between the existing power supply cabinet and the power supply vehicle is not convenient, resulting in the inability to quickly electrically connect the power supply vehicle and the power supply cabinet when the above situation occurs. Therefore, the power supply cabinet needs to be improved. Summary of the Utility Model

[0003] In view of the above problems, a low-voltage power supply cabinet capable of quickly accessing external power supply is provided, aiming to solve the problems existing in the prior art.

[0004] The specific technical solutions are as follows:

[0005] A low-voltage power supply cabinet capable of quickly accessing external power supply includes a power supply cabinet body, a current measurement module, a voltage measurement module, an indicator light module, and an external power supply module. The inner cavity of the power supply cabinet body is divided into a measurement and prompt cavity, a circuit breaker cavity, an external connection cavity, and a grounding cavity from top to bottom. The current measurement module, the voltage measurement module, and the indicator light module are all arranged in the measurement and prompt cavity. The circuit breaker cavity is used for installing a low-voltage circuit breaker, and the external power supply module is arranged in the grounding cavity.

[0006] The above-mentioned low-voltage power supply cabinet capable of quickly accessing external power supply further has the following characteristics. The external power supply module includes a first external socket and a second external socket. The first external socket and the second external socket are connected in series and used as an output end to be electrically connected to an external low-voltage cabinet through a switch K1. The output end of the second external socket is grounded through a protection circuit. Two parts of the indicator light module are respectively arranged at the first external socket and the output end of the switch K1.

[0007] Beneficial effects of the above solution: When a problem occurs in the normal three-phase power supply, it is necessary to use an external power supply vehicle for supplementary power supply in time. The external power supply vehicle can access the power supply cabinet through different sockets, improving the access speed.

[0008] The above-mentioned low-voltage power supply cabinet capable of quickly accessing external power supply further has the following characteristics. The current measurement module includes three ammeters, and the three ammeters are respectively connected to the output end of the switch K1 for measuring the three-phase current of the output end.

[0009] Beneficial effects of the above solution: It is used to detect the current situation after connecting to an external power supply.

[0010] The above-mentioned low-voltage power cabinet that can quickly connect to an external power supply also has the following characteristics. The voltage measurement module includes a voltmeter, and the voltmeter is arranged at the output end of the switch K1 and is used to measure the three-phase voltage at the output end.

[0011] Beneficial effects of the above solution: It is used to detect the voltage situation after connecting to an external power supply.

[0012] The above-mentioned low-voltage power cabinet that can quickly connect to an external power supply also has the following characteristics. The indicator light module includes an access indicator light and an output indicator light. The access indicator light is installed at the first external socket and is used to display the situation of the external socket connecting to an external power supply. The output indicator light is installed at the output end of the switch K1 and is used to display the situation of the external power supply output to the load.

[0013] Beneficial effects of the above solution: The access indicator light is used to display the power supply situation of connecting to an external power supply, and the output indicator light is used to display the output situation of the external power supply after passing through the power cabinet.

[0014] The above-mentioned low-voltage power cabinet that can quickly connect to an external power supply also has the following characteristics. The breaker chamber, external connection chamber, and grounding chamber of the power cabinet body are all provided with separately openable compartment doors. The prompt chamber is set in a closed state. The display parts of the access indicator light, output indicator light, ammeter, and voltmeter are all inlaid on the front panel of the prompt chamber.

[0015] Beneficial effects of the above solution: Since the usage frequency and maintenance frequency of the external power supply module and the circuit breaker are different, in order to meet the actual needs, the external power supply module and the circuit breaker are separately enclosed and placed.

[0016] In summary, the beneficial effects of this solution are:

[0017] In the low-voltage power cabinet that can quickly connect to an external power supply provided by the present invention, by setting a socket for an external power supply vehicle plug in the power cabinet, the power supply vehicle can quickly connect to the power supply in an emergency. The low-voltage power cabinet that can quickly connect to an external power supply provided by the present invention has the effect of improving the speed of connecting to an external power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a front view structural schematic diagram of the low-voltage power cabinet that can quickly connect to an external power supply of the present invention;

[0019] Figure 2 is a circuit structural schematic diagram of the external power supply module of the low-voltage power cabinet that can quickly connect to an external power supply of the present invention.

[0020] In the figure: 1. Prompt cavity; 2. Circuit breaker cavity; 3. External connection cavity; 4. Grounding cavity; 5. First external socket; 6. Second external socket. Specific embodiments

[0021] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.

[0023] The present utility model will be further described below in conjunction with specific embodiments, but it is not a limitation of the present utility model.

[0024] Figure 1 It is a front view structural schematic diagram of a low-voltage power cabinet capable of quickly accessing external power supply of the present utility model. Figure 2 It is a circuit structural schematic diagram of an external power supply module of a low-voltage power cabinet capable of quickly accessing external power supply of the present utility model. As shown in Figure 1 and Figure 2 shown, the low-voltage power cabinet capable of quickly accessing external power supply provided in this embodiment includes a power cabinet body, a current measurement module, a voltage measurement module, an indicator light module, and an external power supply module. The inner cavity of the power cabinet body is successively from top to bottom a measurement prompt cavity 1, a circuit breaker cavity 2, an external connection cavity 3, and a grounding cavity 4. The current measurement module, the voltage measurement module, and the indicator light module are all arranged in the measurement prompt cavity 1. The circuit breaker cavity 2 is used to install a low-voltage circuit breaker, and the external power supply module is arranged in the grounding cavity 4.

[0025] In the above embodiment, the external power supply module includes a first external socket 5 and a second external socket 6. The first external socket 5 and the second external socket 6 are connected in series and used as an output end to be electrically connected to an external low-voltage cabinet through a switch K1. The output end of the second external socket 6 is grounded through a protection circuit. Two parts of the indicator light module are respectively arranged at the first external socket 5 and the output end of the switch K1.

[0026] It should be noted that the first external socket 5 and the second external socket 6 are sockets of different standards to adapt to different power supply vehicle plugs, and the external power supply module may also include more different sockets to further increase the adaptability.

[0027] In the above embodiment, the current measurement module includes three ammeters, which are respectively connected to the output end of the switch K1 and used to measure the three-phase current at the output end.

[0028] In the above embodiment, the voltage measurement module includes a voltmeter, which is arranged at the output end of the switch K1 and used to measure the three-phase voltage at the output end.

[0029] In the above embodiment, the indicator light module includes an input indicator light and an output indicator light. The input indicator light is installed at the first external socket 5 and used to display the situation of the external power supply connected to the external socket. The output indicator light is installed at the output end of the switch K1 and used to display the situation of the external power supply output to the load.

[0030] In the above embodiment, the breaker chamber 2, the external connection chamber 3 and the grounding chamber 4 of the power cabinet body are all provided with separately openable doors. The prompt chamber 1 is set in a closed state. The display parts of the input indicator light, the output indicator light, the ammeter and the voltmeter are all inlaid on the front panel of the prompt chamber 1.

[0031] Working principle: When neither of the two power supplies can supply power normally, after the power supply vehicle of the power grid arrives at the site, the cable plug of the power supply vehicle is inserted into the corresponding external power supply socket. At this time, the power supply vehicle replaces the power supply until the system power supply is restored.

[0032] The above is only a preferred embodiment of the present invention, and it does not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be able to realize that all the equivalent replacements and obvious changes made by using the content of the specification of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-voltage power supply cabinet capable of quickly accessing an external power supply, characterized in that: The invention comprises a power supply cabinet body, a current measuring module, a voltage measuring module, an indicator light module and an external power supply module, wherein the inner chamber of the power supply cabinet body comprises, from top to bottom, a measurement prompt chamber (1), a circuit breaker chamber (2), an external connection chamber (3) and a grounding chamber (4); the current measuring module, the voltage measuring module and the indicator light module are all arranged in the measurement prompt chamber (1); the circuit breaker chamber (2) is used for installing a low-voltage circuit breaker; and the external power supply module is arranged in the grounding chamber (4).

2. A low-voltage power supply cabinet capable of quickly accessing external power supply according to claim 1, characterized in that: The external power supply module comprises a first external socket (5) and a second external socket (6); the first external socket (5) and the second external socket (6) are connected in series and electrically connected to an external low-voltage cabinet via a switch K1 as an output end; the output end of the second external socket (6) is grounded via a protection circuit; and the two parts of the indicator light module are respectively arranged at the first external socket (5) and the output end of the switch K1.

3. A low-voltage power supply cabinet capable of quickly accessing external power supply according to claim 2, characterized in that: The current measurement module includes three ammeters, which are respectively connected to the output ends of the switch K1 to measure three currents at the output ends.

4. A low-voltage power supply cabinet capable of quickly accessing external power supply according to claim 3, characterized in that: The voltage measurement module includes a voltmeter, which is arranged at the output end of the switch K1 and is used to measure three voltages at the output end.

5. A low-voltage power supply cabinet capable of quickly accessing external power supply according to claim 4, characterized in that: The indicator light module comprises an access indicator light and an output indicator light. The access indicator light is installed at the first external socket (5) and is used to display the status of the external socket being connected to an external power supply. The output indicator light is installed at the output end of the switch K1 and is used to display the status of the external power supply being output to the load.

6. A low-voltage power supply cabinet capable of quickly accessing external power supply according to claim 5, characterized in that: The circuit breaker chamber (2), the external connection chamber (3) and the grounding chamber (4) of the power supply cabinet body are all provided with doors that can be opened separately, the prompt chamber (1) is set in a closed state, and the display parts of the access indicator light, the output indicator light, the ammeter and the voltmeter are all embedded on the front panel of the prompt chamber (1).

Images