Five-prevention interlocking structure of integrated node switch cabinet

Abstract

The utility model discloses a five-prevention interlocking structure of an integrated node switch cabinet, which is characterized in that five-prevention interlocking is arranged at a cross beam between a cable chamber door and a mechanism panel, the cable chamber door is provided with an interlocking bracket, and a baffle plate and a baffle plate additional sheet are arranged at the side part of the mechanism panel; an interlocking mounting plate, an interlocking limiting plate and an interlocking sheet which are connected together through an interlocking shaft are arranged at the bottom of the cross beam; and a tension spring is arranged between the interlocking mounting plate and the interlocking sheet. According to the utility model, mechanical locking is added, so that mistaken entering into an electrified interval is prevented, when misoperation occurs, automatic locking is realized, misoperation is prevented, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of switch cabinets, in particular to a five-protection interlocking structure of an integrated node switch cabinet. Background Art

[0002] The main function of the integrated node switchgear is to open and close, control and protect electrical equipment in the process of power generation, transmission, distribution and power conversion in the power system. The components in the switchgear mainly include circuit breakers, disconnectors, load switches, operating mechanisms, mutual inductors and various protection devices.

[0003] However, the cable room of the integrated node switch cabinet in the prior art is not equipped with five-protection interlocking, and there is no reliable mechanical locking, which poses the risk of live operation. Therefore, it is necessary to develop a new five-protection interlocking structure of the integrated node switch cabinet to overcome 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 five-protection interlocking structure of an integrated node switch cabinet, which adds mechanical locking to prevent accidental entry into energized intervals. When an erroneous operation occurs, it realizes automatic locking to prevent the erroneous operation from occurring and improves safety.

[0005] Technical solution: The utility model is a five-protection interlocking structure of an integrated node switch cabinet, which is characterized in that: a five-protection interlock is arranged at the crossbeam between the cable room door and the mechanism panel, an interlocking bracket is arranged at the cable room door, a baffle and a baffle additional plate are arranged on the side of the mechanism panel, an interlocking mounting plate, an interlocking limit plate and an interlocking plate connected together by an interlocking shaft are arranged at the bottom of the crossbeam, and a tension spring is arranged between the interlocking mounting plate and the interlocking plate.

[0006] Wherein, the cable room door is a lifting structure, and the interlocking bracket is fixed on the cable room door.

[0007] Wherein, the baffle additional piece is fixed on the baffle.

[0008] Wherein, the interlocking mounting plate is fixed on the crossbeam.

[0009] Wherein, the baffle is arranged at the opening of the crossbeam.

[0010] Wherein, a load switch mechanism is arranged behind the mechanism panel.

[0011] Wherein, the cable room door is arranged on the cable room of the integrated node switch cabinet.

[0012] Beneficial effects: Compared with the prior art, the utility model has the following significant advantages: the utility model can only operate the grounding switch to open and the load switch to close after the cable room door is closed; if the cable room door is not closed, the grounding switch cannot be operated and the switch cannot be closed. The load switch is opened and the cable room door can be opened after closing the grounding switch; if the grounding switch is not closed, the cable room is energized and the cable room door cannot be opened.

[0013] The utility model adds mechanical locking to prevent mistaken entry into the live interval, and realizes automatic locking when misoperation occurs, preventing misoperation from proceeding and improving safety. The utility model has a novel and practical structure; the parts are simple to process and easy to realize; the locking is intuitive and not easy to be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the interlocking bracket of the utility model being fixed on the cable room door;

[0015] Figure 2 This is a schematic diagram of the structure in which the baffle additional sheet of the utility model is fixed on the baffle;

[0016] Figure 3 It is a schematic diagram of the connection structure of the interlocking mounting plate, the interlocking limiting plate and the interlocking plate of the utility model;

[0017] Figure 4 It is a schematic diagram of the connection structure of the interlocking limit plate and the interlocking piece of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the interlocking piece of the utility model in a tensioned state of the tension spring without the action of external force;

[0019] Figure 6 It is a structural schematic diagram of the utility model in which the interlocking plate rotates clockwise under the action of a downward external force;

[0020] Figure 7 The interlocking mounting plate of the utility model is fixed on the crossbeam, and the baffle is inserted in the opening of the crossbeam. Figure 1 ;

[0021] Figure 8 The interlocking mounting plate of the utility model is fixed on the crossbeam, and the baffle is inserted in the opening of the crossbeam. Figure 2 ;

[0022] Fig. 9 This is a structural schematic diagram of the utility model in which the cable room door is closed and the interlocking bracket clamps the interlocking plate;

[0023] Fig.10 It is a structural schematic diagram of the baffle of the utility model moving downward under the action of its own weight;

[0024] Fig.11It is a structural schematic diagram of the grounding switch of the utility model in which the operating hole is blocked and cannot be operated;

[0025] Fig.12 This is a schematic diagram of the structure of the grounding switch of the utility model, in which the operating hole of the grounding switch is unobstructed and the grounding switch can be operated;

[0026] Fig.13 This is a structural schematic diagram of the cable room door of the utility model in a state where it cannot be opened;

[0027] In the figure, 1 is the cable room door, 2 is the interlocking bracket, 3 is the baffle, 4 is the baffle additional plate, 5 is the interlocking mounting plate, 6 is the interlocking limit plate, 7 is the interlocking plate, 8 is the interlocking shaft, 9 is the tension spring, 10 is the load switch mechanism, 11 is the mechanism panel, and 12 is the crossbeam. DETAILED DESCRIPTION

[0028] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0029] The five-defense interlocking structure of the integrated node switch cabinet of the utility model is provided with a five-defense interlocking at the crossbeam 12 between the cable room door 1 and the mechanism panel 11, the cable room door 1 is provided with an interlocking bracket 2, a baffle 3 and a baffle additional sheet 4 are provided on the side of the mechanism panel 11, and an interlocking mounting plate 5, an interlocking limit plate 6 and an interlocking sheet 7 connected together by an interlocking shaft 8 are provided at the bottom of the crossbeam 12, and a tension spring 9 is provided between the interlocking mounting plate 5 and the interlocking sheet 7. Among them, the cable room door 1 is a lifting structure, and the interlocking bracket 2 is fixed on the cable room door 1. The baffle additional sheet 4 is fixed on the baffle 3. The interlocking mounting plate 5 is fixed on the crossbeam 12. The baffle 3 is arranged at the opening of the crossbeam 12. A load switch mechanism 10 is provided behind the mechanism panel 11. The cable room door 1 is arranged on the cable room of the integrated node switch cabinet.

[0030] like Figure 1 , the interlocking bracket 2 is fixed on the lifting cable room door 1. Figure 2 , the baffle additional sheet 4 is fixed on the baffle 3. Figure 3 , 4 , 5, 6, the interlocking shaft 8 connects the interlocking mounting plate 5, the interlocking plate 7, and the interlocking limit plate 6 together, and the tension spring 9 is placed on the interlocking mounting plate 5 and the interlocking plate 7. When there is no external force, the interlocking plate 7 is in the tension state of the tension spring 9, and the interlocking plate 7 rotates clockwise under the action of a downward external force. Figure 7 , 8 , the interlocking mounting plate 5 is fixed on the crossbeam 12, and the baffle 3 is inserted into the opening of the crossbeam 12. Figure 5 , 9 , the interlocking plate 7 is free from external force, and the baffle 3 blocks the grounding switch operation hole on the mechanism panel 11. Close the cable room door 1, and the interlocking bracket 2 clamps the interlocking plate 7. Fig.10, the cable room door 1 moves down and closes, the interlock bracket 2 drives the interlock plate 7 to rotate, and the baffle 3 moves down under the action of its own weight. Fig.11 , the cable room door 1 is not closed, the interlocking plate 7 is in the tensioned state of the tension spring 9, the baffle 3 is in the high position, and the grounding switch operating hole is blocked and cannot be operated. Fig.12 , the cable room door 1 is closed, the interlocking plate 7 rotates, the baffle 3 moves down under its own weight, the grounding switch operation hole is not blocked, and the grounding switch can be operated. When the grounding switch is closed, the baffle 3 is at a low position under the action of its own weight and can be manually lifted to open the cable room door 1. Fig.13 , the grounding switch is open, the baffle 3 is at a low position under the action of its own weight, the mechanism connecting rod extends to prevent the baffle 3 from lifting up, and the cable room door cannot be opened.

[0031] When using:

[0032] When power is supplied: the grounding switch can be opened and the load switch can be closed only after the cable room door is closed; if the cable room door is not closed, the grounding switch cannot be opened and the switch cannot be closed.

[0033] Close the cable room door (lifting type), at this time, the interlock bracket notch blocks the interlock plate, and the interlock bracket drives the interlock plate to rotate during the falling process of the cable room door, and stops when it rotates to the bending position of the interlock limit plate, and the cable room door is closed. The baffle additional plate and the baffle move downward under the action of gravity, and the grounding switch can be opened and the load switch can be closed.

[0034] When the cable chamber is not closed, the interlocking plate does not move, the baffle does not move down, and the grounding switch operating hole is blocked, so the grounding switch cannot be opened and the load switch cannot be closed.

[0035] During power outage for maintenance: disconnect the load switch and close the grounding switch before opening the cable room door. If the grounding switch is not closed, the cable room is energized and the cable room door cannot be opened.

[0036] Turn on the grounding switch. At this time, the cable room is not energized and the cable room door can be opened for maintenance. Manually lift the baffle and the cable room door at the same time. The baffle moves up and the cable room door moves up. The interlocking piece rotates and resets, and the cable room door can be opened for maintenance.

[0037] When the grounding switch is not closed, the mechanism is in the grounding open state, and the mechanism connecting rod extends to prevent the baffle from lifting. The interlocking plate cannot rotate before the baffle is lifted, and the cable room door cannot be opened, preventing incorrect operation.

Claims

1. A five-protection interlocking structure of an integrated node switch cabinet, characterized in that: A five-protection interlock is arranged at a crossbeam (12) between a cable room door (1) and a mechanism panel (11); an interlock bracket (2) is arranged at the cable room door (1); a baffle (3) and a baffle additional plate (4) are arranged on the side of the mechanism panel (11); an interlock mounting plate (5), an interlock limiting plate (6) and an interlock plate (7) connected together through an interlock shaft (8) are arranged at the bottom of the crossbeam (12); and a tension spring (9) is arranged between the interlock mounting plate (5) and the interlock plate (7).

2. The five-protection interlocking structure of the integrated node switch cabinet according to claim 1 is characterized in that: The cable room door (1) is a lifting structure, and the interlocking bracket (2) is fixed on the cable room door (1).

3. The five-protection interlocking structure of the integrated node switch cabinet according to claim 1 is characterized in that: The baffle additional sheet (4) is fixed on the baffle (3).

4. The five-protection interlocking structure of the integrated node switch cabinet according to claim 1 is characterized in that: The interlocking mounting plate (5) is fixed on the crossbeam (12).

5. The five-protection interlocking structure of the integrated node switch cabinet according to claim 4 is characterized in that: The baffle (3) is arranged at the opening of the crossbeam (12).

6. The five-protection interlocking structure of the integrated node switch cabinet according to claim 1 is characterized in that: A load switch mechanism (10) is arranged behind the mechanism panel (11).

7. The five-protection interlocking structure of the integrated node switch cabinet according to claim 1 is characterized in that: The cable room door (1) is arranged on the cable room of the integrated node switch cabinet.

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