Low-voltage drawer type emergency power supply quick access device

Abstract

The utility model discloses a low-voltage drawer type emergency power supply quick access device, which comprises an emergency power supply interface fixedly arranged in a drawer unit, a wire inlet end of the drawer unit is connected with a branch copper bar, and a wire outlet end of the drawer unit is connected with the emergency power supply interface. The drawer unit is provided with a transparent emergency power supply door, a wire inlet frame circuit breaker and a molded case circuit breaker; an emergency power supply door lock of the emergency power supply door and a frame circuit breaker lock of the wire inlet frame circuit breaker coincide and share one key, and the emergency power supply door lock of the emergency power supply door and an operation handle lock with a key of the molded case circuit breaker coincide and share one key. The emergency power supply interface device provided by the utility model is modularized and standardized, can be quickly replaced or overhauled, and ensures power supply; the door of the emergency power supply room cannot be operated in a normal power supply state of a low-voltage system, so that tripping without reasons in the normal power supply state is avoided; a protection device is arranged between the emergency power supply and the power supply system main loop.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution, in particular to a low-voltage drawer-type emergency power supply quick access device. Background Art

[0002] The existing emergency power supply access method is that the emergency power supply interface is directly fixed and installed in the incoming line cabinet. When the emergency power supply interface itself fails, it cannot be quickly replaced to realize emergency power supply. At the same time, the emergency power supply door is not interlocked with the incoming line circuit breaker. The door of the emergency power supply room can be opened in any operating state, and the quick connector of the emergency power supply can be inserted; resulting in unexplained tripping under normal power supply state; when the emergency power supply is required, the line reverse power supply accident may occur. Moreover, the emergency power supply is directly connected to the main circuit of the power supply system without protection device, which poses a safety hazard.

[0003] Therefore, it is necessary to develop a new type of emergency power supply quick access device to solve the above problems. Utility Model Content

[0004] Purpose of the utility model: In view of the shortcomings and defects of the prior art, the utility model provides a low-voltage drawer-type emergency power supply quick access device. The emergency power supply interface device is modular and standardized, and can be quickly replaced or repaired to ensure power supply; the door of the emergency power supply room cannot be operated when the low-voltage system is in normal power supply state, avoiding unexplained tripping under normal power supply state; a protective device is set between the emergency power supply and the main circuit of the power supply system.

[0005] Technical solution: The utility model is a low-voltage drawer-type emergency power supply quick access device, characterized in that: it includes an emergency power supply interface, the emergency power supply interface is fixedly arranged in the drawer unit, the drawer unit incoming line terminal is connected to the branch copper bus, the drawer unit outgoing line terminal is connected to the emergency power supply interface, the drawer unit is provided with a transparent emergency power supply door, an incoming line frame circuit breaker and a molded case circuit breaker; the emergency power supply door lock of the emergency power supply door is consistent with the frame circuit breaker lock of the incoming line frame circuit breaker and shares a key, and the emergency power supply door lock of the emergency power supply door is consistent with the key-operated handle lock of the molded case circuit breaker and shares a key.

[0006] Among them, the drawer unit is provided with a left side panel, a right side panel, a rear partition panel, a door panel, a bottom panel one and a bottom panel two, and a rotating emergency power door is provided on the door panel. An emergency power interface is provided in the emergency power door, and the emergency power interface is provided on the emergency power installation plate.

[0007] Among them, the rear partition is provided with a three-pole primary inlet cover, a single-pole primary static plug-in, and a secondary static plug-in, and the rear plate inside the rear partition is provided with a corresponding three-pole primary dynamic plug-in, a single-pole primary dynamic plug-in, and a secondary dynamic plug-in.

[0008] Among them, the three-pole primary moving plug-in is respectively connected to the A2 incoming line copper bar, the B1 incoming line copper bar and the B2 incoming line copper bar, and the C1 incoming line copper bar and the molded case circuit breaker through the A1 incoming line copper bar.

[0009] Among them, the number of the emergency power supply interfaces is 4, and the 4 emergency power supply interfaces are respectively connected to the A3 outgoing line copper bar, the B3 outgoing line copper bar, the C3 outgoing line copper bar, and the N2 outgoing line copper bar.

[0010] Among them, the A3 outgoing line copper bar, the A2 outgoing line copper bar are connected to the A1 outgoing line copper bar; the B3 outgoing line copper bar, the B2 outgoing line copper bar are connected to the B1 outgoing line copper bar; the C3 outgoing line copper bar, the C2 outgoing line copper bar are connected to the C1 outgoing line copper bar; the N2 outgoing line copper bar is connected to the N1 outgoing line copper bar.

[0011] Among them, an emergency power supply micro switch is provided on the emergency power supply interface.

[0012] Among them, an instrument panel is provided on the door panel; a molded case circuit breaker mounting plate is provided on the first bottom plate; a current transformer is provided in the drawer unit.

[0013] Beneficial effects: Compared with the prior art, the present utility model has the following remarkable advantages: The emergency power supply interface device of the present utility model is modular and standardized, the transmission is reliable, the emergency power supply interface device can be quickly replaced or repaired to ensure power supply. The door of the emergency power supply room cannot be operated under the normal power supply state of the low-voltage system, avoiding tripping without reason under the normal power supply state. The present utility model realizes the purpose that the incoming line frame circuit breaker and the molded case circuit breaker cannot open the door of the emergency power supply room when they are not in the tripped state at the same time. It realizes the mechanical and electrical double interlock of the emergency power supply and the low-voltage cabinet. The emergency power supply of the present utility model is arranged on the front side of the power distribution system for easy operation, and the door of the emergency power supply is designed with transparent material to facilitate quickly determining the position of the emergency power supply interface in an emergency. The present utility model is provided with a protection device between the emergency power supply and the main circuit of the power supply system to meet the principle of multi-stage protection. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of the present utility model;

[0015] Figure 2 It is a schematic structural diagram of the open state of the emergency power supply door of the present utility model;

[0016] Figure 3 It is a schematic structural diagram of the rotating state of the key-operated handle of the present utility model;

[0017] Figure 4 It is a schematic internal structural diagram of the present utility model;

[0018] Figure 5Schematic diagram of the structure of the present utility model with a rear partition installed;

[0019] Figure 6 Schematic diagram of the structure of the present utility model without a rear partition installed;

[0020] Figure 7 Partial structure schematic diagram of the present utility model;

[0021] In the figure, 1 is a key-operated handle lock; 2 is an emergency power supply door; 3 is a frame circuit breaker lock; 4 is an emergency power supply door lock; 5 is an emergency power supply interface; 6 is a three-pole primary moving plug-in unit; 7 is a three-pole primary incoming line cover; 8 is a single-pole primary moving plug-in unit; 9 is a single-pole primary static plug-in unit; 10 is a left side plate; 11 is a right side plate; 12 is a rear partition; 13 is a door panel; 14 is a rear plate; 15 is a bottom plate one; 16 is a bottom plate two; 17 is a molded case installation plate; 18 is an emergency power supply installation plate; 20 is an A1 incoming line copper busbar; 21 is an A2 incoming line copper busbar; 22 is a B1 incoming line copper busbar; 23 is a B2 incoming line copper busbar; 24 is a C1 incoming line copper busbar; 30 is an emergency power supply micro switch; 31 is a secondary moving plug-in unit; 32 is a secondary static plug-in unit; 33 is an instrument panel; 34 is a molded case circuit breaker; 35 is a current transformer; 40 is an A1 outgoing line copper busbar; 41 is an A2 outgoing line copper busbar; 42 is an A3 outgoing line copper busbar; 43 is a B1 outgoing line copper busbar; 44 is a B2 outgoing line copper busbar; 45 is a B3 outgoing line copper busbar; 46 is a C1 outgoing line copper busbar; 47 is a C2 outgoing line copper busbar; 48 is a C3 outgoing line copper busbar; 49 is an N1 outgoing line copper busbar; 50 is an N2 outgoing line copper busbar. Detailed implementation manners

[0022] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and specific implementation manners.

[0023] The low-voltage drawer-type emergency power supply quick access device of the present utility model includes an emergency power supply interface 5, which is fixedly arranged in the drawer unit. The incoming line end of the drawer unit is connected to a branch copper busbar, and the outgoing line end of the drawer unit is connected to the emergency power supply interface 5. The drawer unit is provided with a transparent emergency power supply door 2, an incoming line frame circuit breaker and a molded case circuit breaker 34; the emergency power supply door lock 4 of the emergency power supply door 2 and the frame circuit breaker lock 3 of the incoming line frame circuit breaker share the same key, and the emergency power supply door lock 4 of the emergency power supply door 2 and the key-operated handle lock 1 of the molded case circuit breaker 34 share the same key.

[0024] Among them, the drawer unit is provided with a left side plate 10, a right side plate 11, a rear partition plate 12, a door panel 13, a first bottom plate 15 and a second bottom plate 16. A rotary emergency power supply door 2 is provided on the door panel 13, and an emergency power supply interface 5 is arranged inside the emergency power supply door 2. The emergency power supply interface 5 is arranged on an emergency power supply mounting plate 18. A three-pole primary incoming line cover 7, a single-pole primary static plug-in 9 and a secondary static plug-in 32 are provided on the rear partition plate 12. Corresponding three-pole primary moving plug-ins 6, single-pole primary moving plug-ins 8 and secondary moving plug-ins 31 are provided on a rear plate 14 inside the rear partition plate 12. The three-pole primary moving plug-ins 6 are respectively connected to an A2 incoming line copper row 21 and an A1 incoming line copper row 20, a B2 incoming line copper row 23 and a B1 incoming line copper row 22, a C2 incoming line copper row 47 and a molded case circuit breaker 34 through an A1 incoming line copper row 20, a B1 incoming line copper row 22 and a C1 incoming line copper row 24. The number of the emergency power supply interfaces 5 is 4, and the 4 emergency power supply interfaces 5 are respectively connected to an A3 outgoing line copper row 42, a B3 outgoing line copper row 45, a C3 outgoing line copper row 48 and an N2 outgoing line copper row 50. The A3 outgoing line copper row 42, the A2 outgoing line copper row 41 and the A1 outgoing line copper row 40 are connected; the B3 outgoing line copper row 45, the B2 outgoing line copper row 44 and the B1 outgoing line copper row 43 are connected; the C3 outgoing line copper row 48, the C2 outgoing line copper row 47 and the C1 outgoing line copper row 46 are connected; the N2 outgoing line copper row 50 and the N1 outgoing line copper row 49 are connected. An emergency power supply micro switch 30 is provided on the emergency power supply interface 5. An instrument panel 33 is provided on the door panel 13; a molded case mounting plate 17 is provided on the first bottom plate 15; a current transformer 35 is arranged inside the drawer unit.

[0025] When the emergency power supply vehicle needs to supply power emergently under the abnormal power supply state of the low-voltage system in the present utility model, it is necessary to first disconnect the frame circuit breaker to make the circuit breaker trip, and then open the emergency power supply room door before the quick connector of the emergency power supply can be inserted, so as to avoid the accident of reverse power transmission in the line.

[0026] In the present utility model, the emergency power supply interface is fixed inside the drawer unit. The incoming line end of the drawer circuit breaker is connected to a branch copper row, and the outgoing line end is connected to the emergency power supply interface; the emergency power supply interface is an integral part of the drawer unit. By configuring a lock on the emergency power supply room door that is the same as the incoming line frame circuit breaker, the incoming line frame circuit breaker and the emergency power supply door share one key for two locks. Under the normal power supply state, the key is inserted into the incoming line frame circuit breaker and cannot be pulled out or operated. By configuring a lock on the emergency power supply room door that is the same as the operating handle of the molded case circuit breaker, the molded case circuit breaker and the emergency power supply door share one key for two locks. Under the normal power supply state, the molded case circuit breaker is in the tripped state and the key is inserted into the operating handle.

[0027] When emergency power supply from an emergency power vehicle is required under abnormal power supply conditions: First, disconnect the incoming line frame circuit breaker to trip the breaker, and pull out the key and insert it into the door of the emergency power supply room. Then, pull out the key of the molded case circuit breaker operating handle and insert it into the door of the emergency power supply room. Next, open the door of the emergency power supply room, insert the quick connector of the emergency power supply, and the microswitch on the emergency power supply operates to control the disconnection of the circuit, making it impossible to close the incoming line frame circuit breaker. Finally, close the molded case circuit breaker to achieve emergency power supply. This achieves the purpose that the door of the emergency power supply room cannot be opened when the incoming line frame circuit breaker is not in the tripped state, and realizes the operation sequence of first disconnecting the incoming line frame circuit breaker and then inserting the emergency power supply. Then, connect the molded case circuit breaker; ensuring the safety and reliability of emergency power supply.

Claims

1. A rapid access device for a low-voltage drawer-type emergency power supply, characterized in that: It includes an emergency power supply interface (5), which is fixedly arranged in the drawer unit. The incoming line end of the drawer unit is connected to the branch copper busbar, and the outgoing line end of the drawer unit is connected to the emergency power supply interface (5). The drawer unit is provided with a transparent emergency power supply door (2), an incoming line frame circuit breaker and a molded case circuit breaker (34); the emergency power supply door lock (4) of the emergency power supply door (2) and the frame circuit breaker lock (3) of the incoming line frame circuit breaker share the same key, and the emergency power supply door lock (4) of the emergency power supply door (2) and the key-operated handle lock (1) of the molded case circuit breaker (34) share the same key.

2. The low-voltage drawer-type emergency power supply quick access device according to claim 1, wherein: The drawer unit is provided with a left side plate (10), a right side plate (11), a rear partition (12), a door panel (13), a bottom plate one (15) and a bottom plate two (16). A rotary emergency power supply door (2) is arranged on the door panel (13), and an emergency power supply interface (5) is arranged inside the emergency power supply door (2). The emergency power supply interface (5) is arranged on the emergency power supply mounting plate (18).

3. The low-voltage drawer-type emergency power supply quick access device according to claim 2, wherein: A three-pole primary incoming line cover (7), a single-pole primary static plug-in (9), and a secondary static plug-in (32) are arranged on the rear partition (12). Corresponding three-pole primary moving plug-ins (6), single-pole primary moving plug-ins (8), and secondary moving plug-ins (31) are arranged on the rear plate (14) inside the rear partition (12).

4. The low-voltage drawer-type emergency power supply quick access device according to claim 3, characterized in that: The three-pole primary moving plug-ins (6) are respectively connected to the A2 incoming line copper busbar (21) and the A1 incoming line copper busbar (20), the B2 incoming line copper busbar (23) and the B1 incoming line copper busbar (22), the C1 incoming line copper busbar (24) and the molded case circuit breaker (34) through the A1 incoming line copper busbar (20).

5. The low-voltage drawer-type emergency power supply quick access device according to claim 1, wherein: The number of the emergency power supply interfaces (5) is 4, and the 4 emergency power supply interfaces (5) are respectively connected to the A3 outgoing line copper busbar (42), the B3 outgoing line copper busbar (45), the C3 outgoing line copper busbar (48), and the N2 outgoing line copper busbar (50).

6. The low-voltage drawer-type emergency power supply quick access device according to claim 5, characterized in that: The A3 outgoing line copper busbar (42), the A2 outgoing line copper busbar (41) and the A1 outgoing line copper busbar (40) are connected; the B3 outgoing line copper busbar (45), the B2 outgoing line copper busbar (44) and the B1 outgoing line copper busbar (43) are connected; the C3 outgoing line copper busbar (48), the C2 outgoing line copper busbar (47) and the C1 outgoing line copper busbar (46) are connected; the N2 outgoing line copper busbar (50) is connected to the N1 outgoing line copper busbar (49).

7. The low-voltage drawer-type emergency power supply quick access device according to claim 6, characterized in that: An emergency power supply microswitch (30) is arranged on the emergency power supply interface (5).

8. The low-voltage drawer-type emergency power supply quick access device according to claim 2, characterized in that: An instrument panel (33) is arranged on the door panel (13); a molded case circuit breaker mounting plate (17) is arranged on the bottom plate one (15); a current transformer (35) is arranged inside the drawer unit.

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