CN116403849A

CN116403849A - Gas-insulated metal-enclosed quick grounding switch device

Info

Publication number: CN116403849A
Application number: CN202310433014.1A
Authority: CN
Inventors: 刘雪吉; 马鹏亮; 王思润; 邵旺海; 康晶; 任国萍
Original assignee: Tianshui Great Wall Switchgear Group Co ltd
Current assignee: Tianshui Great Wall Switchgear Group Co ltd
Priority date: 2023-04-20
Filing date: 2023-04-20
Publication date: 2023-07-07

Abstract

The invention relates to the technical field of grounding switches and discloses a gas-insulated metal-enclosed quick grounding switch device which comprises a shell, a moving contact, a driving arm and a guide cylinder, wherein the outer wall of one end of the guide cylinder is fixedly connected with a static contact seat through a bolt, a supporting plate is fixedly connected with the outer part of the guide cylinder, the outer wall of the supporting plate is fixedly sleeved with the shell, a transmission shaft is arranged in the shell, the driving arm is connected with the moving contact through a pin shaft, the pin shaft penetrates through a slotted hole formed in the guide cylinder, a first limit block and a second limit block are welded at the outer circle of the moving contact, grooves are formed in the first limit block and the second limit block, a nylon sleeve is arranged in the grooves, the nylon sleeve is in contact with the guide cylinder, so that the moving contact moves linearly, the first buffer cushion and the second buffer cushion are formed by two parts, and the metal cushion and the rubber cushion are clamped under the metal cushion, and play a role of buffering when the grounding and the grounding operation are in place.

Description

Gas-insulated metal-enclosed quick grounding switch device

Technical Field

The invention relates to the technical field of grounding switches, in particular to a gas-insulated metal-enclosed rapid grounding switch device.

Background

Currently, a gas-insulated metal-enclosed fast grounding switch device is an important component part on gas-insulated metal-enclosed switchgear (GIS), and firstly has capacitive current generated by opening and closing electrostatic induction of a parallel overhead line and current generated by electromagnetic induction; secondly, when the GIS internal insulator has creepage fault or internal arcing fault, the main loop can be quickly grounded by the quick grounding switch device, and the fault point is quickly cut off by utilizing the protection of the circuit breaker, so that the safety of the power equipment system is ensured.

Therefore, the rapid grounding switch device with convenient operation and high reliability is developed and is important to improving the overall reliable operation of power system equipment.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, the present invention provides a gas-insulated metal-enclosed fast grounding switch device, which solves the above-mentioned problems in the prior art.

The invention provides the following technical scheme: the utility model provides a gas-insulated metal-enclosed quick ground switch device, includes casing, moving contact, actuating arm and guide cylinder, the one end outer wall of guide cylinder passes through the bolt fixedly connected with static contact seat, the outside fixedly connected with backup pad of static contact seat and guide cylinder, the outer wall fixed sleeve of backup pad has the casing, the inside of casing is equipped with the transmission shaft, the outer wall of transmission shaft is equipped with the actuating arm, the outer wall drive of transmission shaft is connected with the actuating arm, the actuating arm includes welding crank arm, link plate, round pin axle and lock nut;

preferably, the welding crank arm comprises an external thread, an internal cylinder and an internal spline, one end of the welding crank arm is fixedly connected with the internal spline, the outer wall of the internal spline is in transmission connection with a buffer pad I, and the welding crank arm is fixedly connected with the connecting plate through a welded shaft.

Preferably, the outer part of the shaft welded on the welding crank arm is an external thread, the inner side of the shaft welded on the welding crank arm, which is close to the inner side, is an internal cylinder, and the connecting plate can radially move at the cylinder position.

Preferably, the locking nut is in threaded connection with the shaft welded on the welding crank arm, and the connecting plate is limited to axially move along the shaft welded on the welding crank arm shaft.

Preferably, the driving arm is connected with the external spline of the transmission shaft through an inner hole spline, holes are formed in the driving arm and the transmission shaft, the driving arm is screwed and connected with the hole formed in the transmission shaft through an inner hexagonal cylinder end set screw, and a nut is screwed and connected on the inner hexagonal cylinder end set screw.

Preferably, the driving arm is provided with a pin shaft, and the driving arm is electrically connected with the moving contact through the pin shaft.

Preferably, the slotted hole is formed in the guide cylinder, the pin shaft is movably connected in the slotted hole, the second limiting block is movably connected to the guide cylinder close to one end, the first limiting block is movably connected to the guide cylinder close to the middle, and the first limiting block and the second limiting block are fixedly sleeved with nylon sleeves.

Preferably, two gaskets two are fixedly arranged at one end of the guide cylinder, a cushion pad two is fixedly connected to the gaskets two, two gaskets one are fixedly arranged at the other end of the guide cylinder, and a cushion pad one is fixedly connected to the gaskets one.

The invention has the technical effects and advantages that:

1. according to the invention, the driving arm is driven by the driving shaft, the driving arm is connected with the driving arm through a spline and is locked by the set screw, the driving arm drives the moving contact to linearly move in the guide cylinder, the driving arm is connected with the moving contact through a pin shaft, the pin shaft penetrates through a long round hole formed in the guide cylinder, the first limiting block and the second limiting block are welded at the outer circle of the moving contact, grooves are formed in the first limiting block and the second limiting block, a nylon sleeve is arranged in the grooves and is in contact with the guide cylinder, the moving contact is linearly moved, the first buffering cushion and the second buffering cushion are arranged at two ends of the guide cylinder, the first buffering cushion and the second buffering cushion are formed by two parts, and the metal cushion and the rubber cushion are clamped under the metal cushion and play a buffering role when the grounding and grounding operation are in place.

Drawings

Fig. 1 is a schematic diagram of a gas insulated metal-enclosed fast ground switching device according to the present invention.

FIG. 2 is a schematic diagram of the structure at I of the present invention.

Fig. 3 is a schematic view of the structure of the driving arm of the present invention.

Fig. 4 is a schematic view of the structure of the guide cylinder of the present invention.

Fig. 5 is a schematic view of the structure of the welded crank arm of the present invention.

The reference numerals are: 1. a static contact seat; 2. a guide cylinder; 21. a slotted hole; 3. a nylon sleeve; 4. a first limiting block; 5. a second limiting block; 6. a first gasket; 7. a first buffer cushion; 8. a driving arm; 81. welding a crank arm; 811. an external thread; 812. an inner cylinder; 813. an internal spline; 82. a connecting plate; 83. a pin shaft; 84. a lock nut; 9. a nut; 10. the end of the inner hexagonal cylinder is tightly fixed with a screw; 11. a transmission shaft; 12. a second cushion pad; 13. a second gasket; 14. a moving contact; 15. a support plate; 16. a housing.

Detailed Description

The embodiments of the present invention will be clearly and completely described below with reference to the drawings in the present invention, and the configurations of the structures described in the following embodiments are merely examples, and the gas-insulated metal-enclosed fast grounding switch device according to the present invention is not limited to the structures described in the following embodiments, and all other embodiments obtained by a person having ordinary skill in the art without making any inventive effort are within the scope of the present invention.

The invention provides a gas-insulated metal-enclosed quick grounding switch device, which comprises a shell 16, a movable contact 14, a driving arm 8 and a guide cylinder 2, wherein one end outer wall of the guide cylinder 2 is fixedly connected with a static contact seat 1 through a bolt, the static contact seat 1 is fixedly connected with the outer part of the guide cylinder 2, the outer wall of the support plate 15 is fixedly sleeved with the shell 16, a transmission shaft 11 is arranged in the shell 16, the driving arm 8 is arranged on the outer wall of the transmission shaft 11, the driving arm 8 is connected with the outer wall of the transmission shaft 11 in a driving way, the driving arm 8 comprises a welding crank arm 81, a connecting plate 82, a pin shaft 83 and a locking nut 84, and the static contact seat 1 and the guide cylinder 2 are fixedly arranged in the shell through the shell 16 and the support plate 15.

Further, the welding crank arm 81 comprises an external thread 811, an internal cylinder 812 and an internal spline 813, one end of the welding crank arm 81 is fixedly connected with the internal spline 813, the outer wall of the internal spline 813 is in transmission connection with the buffer pad I7, and the welding crank arm 81 is fixedly connected with the connecting plate 82 through a welded shaft.

Further, the outer part of the shaft welded on the welding crank arm 81 is provided with an external thread 811, the inner side of the shaft welded on the welding crank arm 81 is provided with an internal cylinder 812 near the inner side, and the connecting plate 82 can move radially at the cylinder position.

Further, the lock nut 84 is screwed to the shaft welded to the welding lever 81, and the link plate 82 is restrained from moving axially along the shaft welded to the shaft of the welding lever 81.

Further, the driving arm 8 is connected with the external spline of the transmission shaft 11 through an internal hole spline, holes are formed in the driving arm 8 and the transmission shaft 11, the driving arm 8 is screwed and connected with the transmission shaft 11 through an internal hexagonal cylinder end set screw 10, and a nut 9 is connected to the internal hexagonal cylinder end set screw 10 through threads, so that the driving arm 8 is prevented from moving axially on the transmission shaft 11.

Further, a pin 83 is disposed on the driving arm 8, and the driving arm 8 is electrically connected to the moving contact 14 through the pin 83.

Further, the long round hole 21 is formed in the guide cylinder 2, the pin shaft 83 is movably connected in the long round hole 21, the second limiting block 5 is movably connected to the guide cylinder 2 at a position close to one end, the first limiting block 4 is movably connected to the guide cylinder 2 at a position close to the middle, the first limiting block 4 and the second limiting block 5 are fixedly sleeved with the nylon sleeve 3, when the guide cylinder is grounded, the transmission shaft 11 rotates anticlockwise by 80 degrees to drive the driving arm 8 to move, and the driving arm 8 drives the moving contact 14 to linearly move.

Further, two gaskets two 13 are fixedly installed at one end of the guide cylinder 2, a cushion pad two 12 is fixedly connected to the two gaskets two 13, two gaskets one 6 are fixedly installed at the other end of the guide cylinder 2, a cushion pad one 7 is fixedly connected to the two gaskets one 6, and a limiting block one 4 is impacted by pressing the cushion pad two 12 downwards through the end gasket two 13, so that a force release effect is achieved, and the grounding operation is completed.

The working principle of the invention is as follows: when the scheme is used, the transmission shaft 11 drives the driving arm 8, the transmission shaft 11 is connected with the driving arm 8 through a spline, the driving arm 8 is locked through a set screw, the driving arm 8 drives the moving contact 14 to linearly move in the guide cylinder 2, the driving arm 8 is connected with the moving contact 14 through a pin shaft 83, the pin shaft 83 penetrates through a slotted hole 21 formed in the guide cylinder 2, a first limit block 4 and a second limit block 5 are welded at the outer circle of the moving contact 14, grooves are formed in the first limit block 4 and the second limit block 5, a nylon sleeve 3 is arranged in the grooves, the nylon sleeve 3 is contacted with the guide cylinder 2, the moving contact 14 is linearly moved, a first buffer cushion 7 and a second buffer cushion 12 are arranged at two ends of the guide cylinder 2, the first buffer cushion 7 and the second buffer cushion 12 are formed by two parts, a metal cushion and a rubber cushion are clamped under the metal cushion, the device has the advantages that the device has a buffering effect on grounding and grounding operation in place, when grounding is conducted, the transmission shaft 11 rotates anticlockwise for 80 degrees to drive the driving arm 8, the driving arm 8 drives the moving contact 14 to move linearly, impact is relatively large when the moving contact 14 is grounded in place, the limiting block 4 presses down the buffer pad II 12 through the buffer pad II 13 to impact, the force release effect is achieved, grounding operation is completed, when grounding is conducted, the transmission shaft 11 rotates clockwise for 80 degrees to drive the driving arm 8, the driving arm 8 drives the moving contact 14 to move linearly, impact is relatively large when grounding is conducted, the limiting block II 5 presses down the buffer pad I7 through the buffer pad I6 to impact, the force release effect is achieved, and grounding operation is completed.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims

1. The utility model provides a gas-insulated metal-enclosed quick ground switch device, includes casing (16), moving contact (14), actuating arm (8) and guide cylinder (2), its characterized in that: one end outer wall of guide cylinder (2) is through bolt fixedly connected with static contact seat (1), outside fixedly connected with backup pad (15) of static contact seat (1) and guide cylinder (2), the outer wall of backup pad (15) is fixed to be cup jointed casing (16), the inside of casing (16) is equipped with transmission shaft (11), the outer wall of transmission shaft (11) is equipped with actuating arm (8), the outer wall drive of transmission shaft (11) is connected with actuating arm (8), actuating arm (8) are including welding turning arm (81), link plate (82), round pin axle (83) and lock nut (84).

2. A gas insulated metal enclosed fast grounding switch assembly as set forth in claim 1, wherein: the welding crank arm (81) comprises an external thread (811), an internal cylinder (812) and an internal spline (813), one end of the welding crank arm (81) is fixedly connected with the internal spline (813), the outer wall of the internal spline (813) is in transmission connection with a buffer pad I (7), and the welding crank arm (81) is fixedly connected with the connecting plate (82) through a welded shaft.

3. A gas insulated metal enclosed fast grounding switch assembly as set forth in claim 1, wherein: the outer part of the shaft welded on the welding crank arm (81) is provided with an external thread (811), the inner side of the shaft welded on the welding crank arm (81) close to the inner side is provided with an inner cylinder (812), and the connecting plate (82) can radially move at the cylinder position.

4. A gas insulated metal enclosed fast grounding switch assembly as set forth in claim 1, wherein: the locking nut (84) is in threaded connection with a shaft welded on the welding crank arm (81), and the connecting plate (82) is limited to axially move along the shaft welded on the shaft of the welding crank arm (81).

5. A gas insulated metal enclosed fast grounding switch assembly as set forth in claim 1, wherein: the driving arm (8) is connected with the external spline of the transmission shaft (11) through an inner hole spline, holes are formed in the driving arm (8) and the transmission shaft (11), the driving arm (8) is tightly screwed with the transmission shaft (11) through an inner hexagonal cylinder end set screw (10), and a nut (9) is connected with the inner hexagonal cylinder end set screw (10) through threads.

6. A gas insulated metal enclosed fast grounding switch assembly as set forth in claim 1, wherein: the driving arm (8) is provided with a pin shaft (83), and the driving arm (8) is electrically connected with a moving contact (14) through the pin shaft (83).

7. A gas insulated metal enclosed fast grounding switch assembly as set forth in claim 1, wherein: the novel guide cylinder is characterized in that a slotted hole (21) is formed in the guide cylinder (2), a pin shaft (83) is movably connected in the slotted hole (21), a second limiting block (5) is movably connected to the guide cylinder (2) close to one end, a first limiting block (4) is movably connected to the guide cylinder (2) close to the middle, and nylon sleeves (3) are fixedly sleeved on the first limiting block (4) and the second limiting block (5).

8. A gas insulated metal enclosed fast grounding switch assembly as set forth in claim 1, wherein: two gaskets II (13) are fixedly arranged at one end of the guide cylinder (2), two gaskets II (13) are fixedly connected with a buffer cushion II (12), two gaskets I (6) are fixedly arranged at the other end of the guide cylinder (2), and buffer cushions I (7) are fixedly connected to the gaskets I (6).