Evacuation lighting distribution box with dual-power-supply automatic switching function

Abstract

The utility model relates to an evacuation lighting distribution box with a dual-power-supply automatic switching function, and belongs to the technical field of evacuation lighting distribution boxes. The device comprises a fixed shell, and a loop control module, a power supply I, a power supply II, an intermediate relay, an air circuit breaker I and an air circuit breaker II which are arranged in the fixed shell, the first power supply is sequentially connected with the first air circuit breaker, the intermediate relay and the loop control module, and the second power supply is sequentially connected with the second air circuit breaker and the loop control module to form a dual-power-supply switching circuit. According to the utility model, 220V dual-power automatic switching can be rapidly realized, the problem that a dual-power automatic switching distribution box is additionally arranged for small-capacity evacuation lighting distribution is avoided, dual-power automatic switching and evacuation lighting distribution can be carried out in one distribution box, the cost is greatly reduced, and the distribution box is especially suitable for explosion dangerous places.

Description

Technical Field

[0001] The utility model belongs to the technical field of evacuation lighting distribution boxes, and in particular relates to an evacuation lighting distribution box with automatic dual power supply switching. Background Art

[0002] At present, fire emergency lighting and evacuation indication systems all adopt centralized control type. According to the requirements of GB51309-2018, their power supply is taken from the fire power supply or the fire power distribution box in the fire compartment or the same fire compartment. In order to save costs, the evacuation lighting distribution box in explosion-hazardous places generally draws power from the fire distribution box of the upper-level substation. However, according to the requirements of the specifications, it is necessary to set up an automatic switching device in the distribution box of the fire compartment. The evacuation lighting distribution box on the market generally requires a separate explosion-proof dual power supply box, which greatly increases the cost. Utility Model Content

[0003] In view of the above-mentioned problems existing in the prior art, the purpose of the utility model is to provide an evacuation lighting distribution box with automatic switching of dual power supplies, which has low cost and can be directly integrated without the need to add a distribution box.

[0004] The utility model provides the following technical solution: an evacuation lighting distribution box with automatic dual power supply switching, comprising a fixed shell, a circuit control module arranged in the fixed shell, a power supply 1, a power supply 2, an intermediate relay, an air circuit breaker 1 and an air circuit breaker 2; the power supply 1 is sequentially connected to the air circuit breaker 1, the intermediate relay and the circuit control module, and the power supply 2 is sequentially connected to the air circuit breaker 2 and the circuit control module to form a dual power supply switching circuit.

[0005] Furthermore, the intermediate relay has at least two pairs of auxiliary contacts.

[0006] Furthermore, the intermediate relay has two pairs of auxiliary contacts, including a pair of normally open auxiliary contacts and a pair of normally closed auxiliary contacts.

[0007] Furthermore, a pair of normally open auxiliary contacts are connected in series to the phase line and the neutral line of power source one.

[0008] Furthermore, a pair of normally closed auxiliary contacts are connected in series to the phase line and the neutral line of the second power source.

[0009] Furthermore, the loop control module is connected to a set of external evacuation indication and evacuation lighting circuits, and a fuse is provided on the connection line between the two.

[0010] Furthermore, a communication module and a charging and discharging module are integrated in the fixed housing.

[0011] Furthermore, the power supply 1, the power supply 2, the air circuit breaker 1 and the air circuit breaker 2 all use a 220V voltage.

[0012] By adopting the above technology, compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model can quickly realize 220V dual power automatic switching, avoiding the problem of setting up a dual power automatic switching distribution box for small-capacity evacuation lighting power distribution. The dual power automatic switching and evacuation lighting power distribution can be built in one distribution box, which greatly reduces the cost and is particularly suitable for explosion-hazardous places. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a circuit control schematic diagram of the utility model. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments of the specification. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0016] On the contrary, the present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the following detailed description of the present invention. Those skilled in the art can fully understand the present invention without the description of these details.

[0017] See also Figure 1 An evacuation lighting distribution box with automatic dual power supply switching includes a fixed housing Q, an air circuit breaker QF1, an air circuit breaker QF2, an intermediate relay K1, and a communication module C1, a circuit control module C2, a charge and discharge module C3, and a fuse Fu integrated in the fixed housing Q.

[0018] Specifically, the distribution box adopts two single-phase 220V power supplies, including power supply 1 and power supply 2; the intermediate relay K1 has two pairs of auxiliary contacts, including a pair of normally open auxiliary contacts K1a and a pair of normally closed auxiliary contacts K1b.

[0019] Specifically, power supply 1 is sequentially connected to single-phase circuit breaker QF1, intermediate relay K1, intermediate relay auxiliary contact K1a, and loop control module C2, and power supply 2 is sequentially connected to single-phase circuit breaker QF2, intermediate relay auxiliary contact K1b, and loop control module C2;

[0020] Power supply 1 and power supply 2 are normally supplied, the circuit breaker (air circuit breaker 1 QF1, air circuit breaker 2 QF2) is closed, power supply 1 is the main supply, the intermediate relay K1 is energized, the auxiliary contact K1a of the intermediate relay is closed, K1b is opened, and power supply 1 is supplied. When power supply 1 loses power, the intermediate relay K1 loses power, the auxiliary contact K1a of the intermediate relay is opened, K1b is closed, and power supply 2 is supplied.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An evacuation lighting distribution box with automatic dual power supply switching, characterized in that: The invention comprises a fixed housing (Q), a circuit control module (C2) arranged in the fixed housing (Q), a power source 1 (1), a power source 2 (2), an intermediate relay (K1), an air circuit breaker 1 (QF1) and an air circuit breaker 2 (QF2); the power source 1 (1) is sequentially connected to the air circuit breaker 1 (QF1), the intermediate relay (K1) and the circuit control module (C2), and the power source 2 (2) is sequentially connected to the air circuit breaker 2 (QF2) and the circuit control module (C2), so as to form a dual power supply switching circuit.

2. The evacuation lighting distribution box with automatic dual power supply switching according to claim 1 is characterized in that: The intermediate relay (K1) has at least two pairs of auxiliary contacts.

3. The evacuation lighting distribution box with automatic dual power supply switching according to claim 2 is characterized in that: The intermediate relay (K1) has two pairs of auxiliary contacts, including a pair of normally open auxiliary contacts (K1a) and a pair of normally closed auxiliary contacts (K1b).

4. The evacuation lighting distribution box with automatic dual power supply switching according to claim 3 is characterized in that: A pair of normally open auxiliary contacts (K1a) are connected in series between the phase line and the neutral line of power source 1 (1).

5. The evacuation lighting distribution box with automatic dual power supply switching according to claim 4 is characterized in that: A pair of normally closed auxiliary contacts (K1b) are connected in series to the phase line and the neutral line of power supply 2 (1).

6. The evacuation lighting distribution box with automatic dual power supply switching according to claim 1 is characterized in that: The loop control module (C2) is connected to a set of external evacuation indication and evacuation lighting circuits (C4), and a fuse (Fu) is provided on the connection line between the two.

7. The evacuation lighting distribution box with automatic dual power supply switching according to claim 1 is characterized in that: A communication module (C1) and a charging and discharging module (C3) are also integrated in the fixed housing (Q).

8. The evacuation lighting distribution box with dual power automatic switching according to claim 1 is characterized in that: The power source 1 (1), the power source 2 (2), the air circuit breaker 1 (QF1) and the air circuit breaker 2 (QF2) all use a 220V voltage.

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