CN220964197U - Switch cabinet manual grounding switch priority structure - Google Patents

Abstract

The utility model relates to a switch cabinet manual grounding switch priority structure, which comprises a shell, a movable plate, an operation hinge, an electromagnet, a travel switch, an auxiliary push-pull rod and a grounding switch operation shaft, wherein the movable plate is arranged on the shell; in a normal working state, as the electromagnet is in a power-off state, the movable shaft of the electromagnet can prop against the top end of the switch movable groove to limit the movable plate to move downwards, the inner access hole and the outer access hole can only be kept in a staggered state, and a worker cannot operate the grounding switch operation shaft from the outside; when the maintenance working state is needed to be changed, the manual rotation operation hinge closes the travel switch, the auxiliary push-pull rod is pulled down, the outer maintenance hole is positioned right in front of the inner maintenance hole, accordingly, a worker can control the grounding switch from the outside through the grounding switch operation shaft, the travel switch is closed, the electric grounding switch is not capable of remotely controlling the electric grounding switch to be closed and opened due to the fact that the travel switch normally closed point is electrically interlocked with the electric grounding switch power supply, and the on-site manual operation of the grounding switch is guaranteed to be a first instruction.

Description

Switch cabinet manual grounding switch priority structure

Technical Field

The utility model relates to the technical field of switch cabinets, in particular to a priority structure of a manual grounding switch of a switch cabinet.

Background

The KYN61-40.5 armored movable alternating current metal enclosed switch cabinet is suitable for a three-phase alternating current 50Hz and 40.5kV single bus and single bus segmented power system. The system is mainly applied to power generation and distribution of power plants, power substations, industrial and mining enterprises and high-rise buildings, is used for receiving and distributing electric energy, controls, protects and monitors circuits, meets the requirements of IEC60298, GB3906, DL404 and other standards, and has a perfect five-prevention function. The cabinet body is divided into a handcart room, a bus room, a cable room and an instrument room. Along with the advanced modern information technology and power grid technology, the intelligent operation and detection system is constructed, and the requirements are as follows: the intelligent station requires that the handcart and the grounding switch are electric and can be operated manually, so that the handcart can be controlled to be opened and closed remotely, and the handcart can be rocked in and out electrically, and the requirement of 'one-key sequential control' is met.

However, the current grounding switch interlocking device can only realize the basic five-prevention requirement, and can not meet the requirement of preventing misoperation when the remote control electric grounding switch is switched on and off and the manual grounding switch is operated at the same time, namely, the manual operation of field personnel can not be ensured to be a first instruction.

Disclosure of utility model

First, the technical problem to be solved

In order to solve the above problems in the prior art, the present utility model provides a manual grounding switch priority structure of a switch cabinet, which can ensure that the on-site manual operation of the grounding switch is a first instruction.

(II) technical scheme

In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps: a switch cabinet manual grounding switch priority structure comprises a shell, a movable plate, an operation hinge, an electromagnet, a travel switch, an auxiliary push-pull rod and a grounding switch operation shaft;

An outer access hole, a through hole and a push-pull rod travel groove are respectively formed in one side wall of the shell, the operation hinge is rotatably connected to the upper portion of the outer access hole, a supporting piece is arranged on the upper portion of the operation hinge, the grounding switch operation shaft is located on the inner side of the outer access hole, the travel switch is fixed on the inner side of the through hole, the travel shaft of the travel switch penetrates through the through hole, the electromagnet is fixed above the travel switch, the movable plate moves up and down in the shell, a switch movable notch, an inner access hole and an auxiliary push-pull rod are formed in the movable plate, and the auxiliary push-pull rod penetrates through the push-pull rod travel groove and can move in the range of the push-pull rod travel groove;

Under normal working conditions, the operation hinge sags to be in a closed state, the operation hinge covers right in front of the outer access hole, the travel switch is in an open state, a power supply of the electric grounding switch is in an electrified state, the electric grounding switch can be remotely operated, the electromagnet is in a power-off state after a cable chamber electrified sensor senses that the cable chamber has high voltage, the electrified display controls the electromagnet to be in a power-off state, the travel switch and the electromagnet are both positioned in the switch movable groove, a movable shaft of the electromagnet stretches out and props against the top end of the switch movable groove so as to limit the movable plate to move downwards, and the inner access hole is positioned above the outer access hole, is staggered with each other, and cannot operate the grounding switch operation shaft from outside;

When changing into maintenance operating condition, the operation hinge upwards rotates, support the piece along with operation hinge rotation presses travel shaft of travel switch makes travel switch becomes the switch-on state, and the power of electronic earthing switch breaks off this moment, unable remote operation electronic earthing switch, the electro-magnet is along with cable room area electric sensor senses the cable room and does not have behind the high voltage electricity, electrified display control electro-magnet change into the switch-on state, after the circular telegram the loose axle shrink of electro-magnet is located the fly leaf inboard, unable restriction the fly leaf moves down, through the downward movement auxiliary push-and-pull rod makes the fly leaf moves down, until outer access hole is located in the place ahead of interior access hole, can follow outside through outer access hole and interior access hole operation earthing switch operation axle.

Further, the device also comprises a matched lock piece;

The cooperation locking piece set up in on the outer access hole, the middle part of cooperation locking piece is equipped with the opening, outer access hole is located in the opening scope, one side of cooperation locking piece is equipped with first fore shaft, one side of operation hinge be equipped with first fore shaft complex second fore shaft, works as when operation hinge sags, the position of first fore shaft and second fore shaft coincides.

Further, the device also comprises a tension spring and a limiting plate;

The limiting plate is fixed in the bottom of interior access hole, and outwards protruding pass the outer access hole, the bottom of extension spring with the upper portion of fly leaf is connected, the top of extension spring with the casing lateral wall is connected, under the condition that does not receive other external force, because of extension spring pulling force, the limiting plate support hold in the top of outer access hole.

Further, the device also comprises a first mounting plate and a second mounting plate;

the first mounting plate and the second mounting plate are both fixed on the inner side wall of the shell, the travel switch is fixedly mounted on the first mounting plate, and the electromagnet is fixedly mounted on the second mounting plate.

(III) beneficial effects

The beneficial effects of the utility model are as follows: under the normal working state, as the cable chamber electrification sensor senses that the cable chamber is provided with high-voltage electricity, the electrification display controls the electromagnet to be in a power-off state, the movable shaft of the electrification display can prop against the top end of the switch movable groove to limit the downward movement of the movable plate, the inner overhaul port and the outer overhaul port can only be kept in a staggered state, and a worker cannot operate the grounding switch operation shaft from outside; when the maintenance working state is needed to be changed, the travel switch can be manually turned to be disconnected by the operation hinge, so that the electric grounding switch power supply is disconnected, the live display controls the electromagnet to be in an electrified state after the cable chamber is electrified by the electric charging sensor, the movable plate can move downwards by the attraction of the electromagnet, the auxiliary push-pull rod is pulled downwards, the outer maintenance opening is positioned right in front of the inner maintenance opening, thereby enabling a worker to control the grounding switch from the outside through the grounding switch operation shaft, the electric grounding switch power supply is electrically interlocked with the normally closed point of the travel switch, the electric grounding switch power supply is disconnected, the electric grounding switch cannot be remotely controlled to be connected with and disconnected from the first instruction, and accordingly the on-site manual operation of the grounding switch is ensured, and the conflict between the remote control electric grounding switch and the on-site operation grounding switch is avoided.

Drawings

FIG. 1 is a schematic diagram of a prior structure of a manual grounding switch of a switchgear of the present utility model;

FIG. 2 is a front cross-sectional view of a preferred structure of a manual grounding switch of a switchgear of the present utility model;

FIG. 3 is an enlarged detail view of portion A of FIG. 2 in a normal operating condition;

FIG. 4 is an enlarged detail view of portion A of FIG. 2 in service;

FIG. 5 is an exploded view of the present utility model after hiding the grounding switch operating shaft;

FIG. 6 is a detail view of section B of FIG. 5;

FIG. 7 is a schematic view of the structure of the housing of the present utility model;

FIG. 8 is an exploded view of the present utility model with the housing and the grounding switch operating shaft hidden;

FIG. 9 is an enlarged view of a part of the structure of the utility model in a normal tooling state;

FIG. 10 is an enlarged view of a portion of the structure of the present utility model in an inspection state;

Reference numerals illustrate:

1. A housing; 101. an outer access port; 102. a push-pull rod travel groove; 103. a through hole;

2. a ground switch operating shaft;

3. a movable plate; 301. an inner access port; 302. switching the movable notch;

4. a travel switch; 5. an electromagnet; 6. a first mounting plate; 7. a second mounting plate;

8. operating the hinge; 801. a holding member; 802. a second locking notch;

9. matching with a locking piece; 901. an opening; 902. a first locking notch;

10. A limiting plate; 11. an auxiliary push-pull rod; 12. and a tension spring.

Detailed Description

The utility model will be better explained by the following detailed description of the embodiments with reference to the drawings.

Example 1

Referring to fig. 1 to 10, a manual earthing switch priority structure of a switch cabinet includes a housing 1, a movable plate 3, an operation hinge 8, an electromagnet 5, a travel switch 4, an auxiliary push-pull rod 11 and an earthing switch operation shaft 2;

An outer access hole 101, a through hole 103 and a push-pull rod travel groove 102 are respectively arranged on one side wall of the shell 1, the operation hinge 8 is rotatably connected above the outer access hole 101, a supporting part 801 is arranged on the upper part of the operation hinge 8, the grounding switch operation shaft 2 is positioned at the inner side of the outer access hole 101, the travel switch 4 is fixed at the inner side of the through hole 103, the travel shaft of the travel switch 4 passes through the through hole 103, the electromagnet 5 is fixed above the travel switch 4, the movable plate 3 moves up and down inside the shell 1, a switch movable notch 302, an inner access hole 301 and an auxiliary push-pull rod 11 are arranged on the movable plate 3, and the auxiliary push-pull rod 11 passes through the push-pull rod travel groove 102 and can move within the range of the push-pull rod travel groove 102;

Referring to fig. 3 and 9, in a normal working state, the operation hinge 8 sags to be in a closed state, a five-prevention padlock is hung on the first locking notch 902 and the second locking notch 802, the operation hinge 8 covers right in front of the outer access opening 101, the travel switch 4 is in an open state, a power supply of the electric grounding switch is in an energized state, the electric grounding switch can be remotely operated, the electromagnet is controlled to be in a power-off state by the electrified display after the cable chamber electrified sensor senses that the cable chamber has high voltage, the travel switch 4 and the electromagnet 5 are both positioned in the switch movable groove, a movable shaft of the electromagnet 5 stretches out to be abutted against the top end of the switch movable groove so as to limit the movable plate 3 to move downwards, the inner access opening 301 is positioned above the outer access opening 101, and the travel switch 4 and the inner access opening 301 are mutually staggered, and the grounding switch operation shaft 2 cannot be operated from the outside;

Referring to fig. 4 and 10, when the operation hinge 8 rotates upward, the holding member 801 rotates along with the operation hinge 8 to press the travel shaft of the travel switch 4, so that the travel switch 4 becomes the energized state, the electromagnet 5 does not change to the energized state along with the high voltage of the cable chamber, after the electromagnet 5 is energized, the movable shaft of the electromagnet 5 is contracted and positioned at the inner side of the movable plate 3, the movable plate 3 cannot be limited to move downward, the movable plate 3 moves downward by moving the auxiliary push-pull rod 11 downward until the outer access hole 101 is positioned right in front of the inner access hole 301, and at this time, the limiting plate 10 abuts against the bottom end of the outer access hole 101, limits the continuous downward movement of the movable plate 3, and can pass through the outer access hole 101 and the inner access hole 301 from the outside to operate the grounding switch operation shaft 2.

Wherein, the cable chamber of cubical switchboard is equipped with high-voltage electrification sensor in, when high-voltage electrification sensor detected that the cable chamber does not have the electricity, then high-voltage electrification display transmission signal let electro-magnet 5 switch on, and its loose axle shrink after electro-magnet 5 switch on can't restrict fly leaf 3 moves down.

In this embodiment, referring to fig. 6 and 8, the locking device further comprises a mating lock 9;

The cooperation latch 9 set up in on the outer access hole 101, the middle part of cooperation latch 9 is equipped with opening 901, outer access hole 101 is located opening 901 within range, one side of cooperation latch 9 is equipped with first fore shaft 902, one side of operation hinge 8 be equipped with first fore shaft 902 complex second fore shaft 802, works as when operation hinge 8 sags, the position of first fore shaft 902 coincides with the position of second fore shaft 802, can install five anti-lock after the coincidence and prevent that the non-relevant personnel from operating.

In the present embodiment, as shown with reference to fig. 8 and 9, a tension spring 12 and a limiting plate 10 are further included;

The limiting plate 10 is fixed at the bottom end of the inner access hole 301, and protrudes outwards to pass through the outer access hole 101, the bottom end of the tension spring 12 is connected with the upper part of the movable plate 3, the top end of the tension spring 12 is connected with the side wall of the shell 1, under the condition of not receiving other external forces, the limiting plate 10 is propped against the top end of the outer access hole 101 due to the tension force of the tension spring 12, and the limiting plate 10 and the auxiliary push-pull rod 11 can both limit the movable plate 3 to move upwards; when overhauling, the operator is required to rotate the operation hinge 8 upwards and can overhaul the operation only by pulling the auxiliary push-pull rod 11 downwards, and after overhauling, after the travel switch 4 is restored by rotating the operation hinge 8 downwards, the movable plate 3 can automatically move upwards to reset due to the elastic effect of the tension spring.

In the present embodiment, as shown with reference to fig. 8, further comprising a first mounting plate 6 and a second mounting plate 7;

The first mounting plate 6 and the second mounting plate 7 are both fixed on the inner side wall of the shell 1, the travel switch 4 is fixedly mounted on the first mounting plate 6, and the electromagnet 5 is fixedly mounted on the second mounting plate 7.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.

Claims (4)

1. The manual grounding switch priority structure of the switch cabinet is characterized by comprising a shell, a movable plate, an operation hinge, an electromagnet, a travel switch, an auxiliary push-pull rod and a grounding switch operation shaft;

An outer access hole, a through hole and a push-pull rod travel groove are respectively formed in one side wall of the shell, the operation hinge is rotatably connected to the upper portion of the outer access hole, a supporting piece is arranged on the upper portion of the operation hinge, the grounding switch operation shaft is located on the inner side of the outer access hole, the travel switch is fixed on the inner side of the through hole, the travel shaft of the travel switch penetrates through the through hole, the electromagnet is fixed above the travel switch, the movable plate moves up and down in the shell, a switch movable notch, an inner access hole and an auxiliary push-pull rod are formed in the movable plate, and the auxiliary push-pull rod penetrates through the push-pull rod travel groove and can move in the range of the push-pull rod travel groove;

Under normal working conditions, the operation hinge sags to be in a closed state, the operation hinge covers right in front of the outer access hole, the travel switch is in an open state, a power supply of the electric grounding switch is in an electrified state, the electric grounding switch can be remotely operated, the electromagnet is in a power-off state after a cable chamber electrified sensor senses that the cable chamber has high voltage, the electrified display controls the electromagnet to be in a power-off state, the travel switch and the electromagnet are both positioned in the switch movable groove, a movable shaft of the electromagnet stretches out and props against the top end of the switch movable groove so as to limit the movable plate to move downwards, and the inner access hole is positioned above the outer access hole, is staggered with each other, and cannot operate the grounding switch operation shaft from outside;

When changing into maintenance operating condition, the operation hinge upwards rotates, support the piece along with operation hinge rotation presses travel shaft of travel switch makes travel switch becomes the switch-on state, and the power of electronic earthing switch breaks off this moment, unable remote operation electronic earthing switch, the electro-magnet is along with cable room area electric sensor senses the cable room and does not have behind the high voltage electricity, electrified display control electro-magnet change into the switch-on state, after the circular telegram the loose axle shrink of electro-magnet is located the fly leaf inboard, unable restriction the fly leaf moves down, through the downward movement auxiliary push-and-pull rod makes the fly leaf moves down, until outer access hole is located in the place ahead of interior access hole, can follow outside through outer access hole and interior access hole operation earthing switch operation axle.

2. The switch cabinet manual grounding switch priority structure of claim 1, further comprising a mating lock;

The cooperation locking piece set up in on the outer access hole, the middle part of cooperation locking piece is equipped with the opening, outer access hole is located in the opening scope, one side of cooperation locking piece is equipped with first fore shaft, one side of operation hinge be equipped with first fore shaft complex second fore shaft, works as when operation hinge sags, the position of first fore shaft and second fore shaft coincides.

3. The switch cabinet manual grounding switch priority structure of claim 1, further comprising a tension spring and a limiting plate;

The limiting plate is fixed in the bottom of interior access hole, and outwards protruding pass the outer access hole, the bottom of extension spring with the upper portion of fly leaf is connected, the top of extension spring with the casing lateral wall is connected, under the condition that does not receive other external force, because of extension spring pulling force, the limiting plate support hold in the top of outer access hole.

4. The switch cabinet manual grounding switch priority structure of claim 1, further comprising a first mounting plate and a second mounting plate;

the first mounting plate and the second mounting plate are both fixed on the inner side wall of the shell, the travel switch is fixedly mounted on the first mounting plate, and the electromagnet is fixedly mounted on the second mounting plate.