CN115332987A

CN115332987A - Gas insulation switch cabinet

Info

Publication number: CN115332987A
Application number: CN202211122598.2A
Authority: CN
Inventors: 曹玉生; 詹永钦
Original assignee: Shanghai Bapei Switch Equipment Co ltd
Current assignee: Shanghai Bapei Switch Equipment Co ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2022-11-11

Abstract

The invention discloses a gas insulation switch cabinet in the technical field of high-voltage switch cabinets, and aims to solve the problems that a three-station isolation mechanism in the prior art is small in safe insulation distance, poor in insulation capacity, lack of limit during working and easy to contact badly or break. The three-station isolating mechanism comprises a shell, a three-station isolating mechanism, a circuit breaker mechanism and an insulating mechanism, wherein the circuit breaker mechanism and the insulating mechanism are arranged on the shell; a rotating shaft which is rotatably connected is arranged in the shell, a crank arm is arranged on the rotating shaft, a turbine is sleeved on the rotating shaft, a connecting rod which is rotatably connected is arranged in the shell, a worm which is meshed with the turbine is arranged at one end of the connecting rod, and the other end of the connecting rod is in transmission connection with an insulating mechanism; this gas insulated switchgear, three station isolation mechanism safety insulation distance are more than current structure distance, through the cooperation of turbine, worm and slip uide bushing, play limiting displacement to the slip uide bushing for three work isolation mechanism can be stable keep closing a floodgate, separating brake or ground connection state, avoid phenomenons such as contact failure or disconnection to appear in it.

Description

Gas insulation switch cabinet

Technical Field

The invention relates to a gas insulation switch cabinet, and belongs to the technical field of high-voltage switch cabinets.

Background

The gas insulation switch cabinet in the current market adopts sulfur hexafluoride, nitrogen and dry air as insulation, among three gases, the sulfur hexafluoride gas insulation capability is strongest, the output of a large number of switch cabinets in the market is occupied, the environmental climate temperature rise can be caused to generate greenhouse effect after a large amount of sulfur hexafluoride is used for a long time, the nitrogen or dry air adopted as the insulation switch cabinet can only meet the design of a switch cabinet product with the voltage of 12 kilovolts at present, if the requirements of higher voltage switch performance are met under the same condition, the insulation pressure of the switch cabinet product must be designed to be very high, the deformation of a gas box is serious, and the working stability of the device is directly influenced.

The three-station isolation mechanism of the existing gas insulation switch cabinet is mainly designed in the structure that a disconnecting link rotates, a direct-acting switch rotates and the like, under the same size and appearance, the structure safety distance is smaller, the insulating capability is poorer, the product performance is difficult to guarantee if the product volume is not enlarged, meanwhile, the three-station isolation mechanism is lack of limitation in work, the problem of poor contact or disconnection easily occurs when the three-station isolation mechanism is not in separation and combination, the potential safety hazard exists, the working stability of the device is influenced, and the manufacturing difficulty and the manufacturing cost are increased.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a gas insulation switch cabinet, which solves the problems of small safe insulation distance and poor insulation capacity of a three-station isolation mechanism of the conventional gas insulation switch cabinet, and the problems of lack of limit and easiness in poor contact or disconnection during working.

In order to solve the technical problems, the invention is realized by adopting the following technical scheme:

the invention provides a gas insulation switch cabinet which comprises a shell, a three-station isolation mechanism, a circuit breaker mechanism and an insulation mechanism, wherein the circuit breaker mechanism and the insulation mechanism are arranged on the shell;

the three-station isolation mechanism comprises a support arranged on the pole, the pole is electrically connected with the support, a guide rod in rotary connection is arranged in the support, the outer wall of the guide rod is in sliding connection with a sliding guide sleeve, first spring contact fingers are arranged at two ends of the inner wall of the sliding guide sleeve, a support plate and a plurality of sleeves respectively corresponding to the pole are arranged in the shell, contacts matched with the sliding guide sleeve are arranged on the support plate, the sleeves are connected with the corresponding contacts, and a grounding contact and a grounding busbar matched with the sliding guide sleeve are arranged in the shell;

be equipped with the pivot of rotating the connection in the shell, in the pivot in slide guide sleeve one side is equipped with the turning arm, the turning arm is with adjacent slide guide sleeve rotates to be connected, the cover is equipped with the turbine in the pivot, be equipped with the connecting rod of rotating the connection in the shell, connecting rod one end be equipped with turbine engaged with worm, the connecting rod other end with the insulating mechanism transmission is connected.

Furthermore, be equipped with vacuum interrupter and insulating pull rod in the utmost point post, insulating pull rod one end with bellows connection, the insulating pull rod other end is connected with the flexible coupling, the flexible coupling is located vacuum interrupter one side, flexible coupling one end with support electric connection.

Further, the corrugated pipe is elastically connected with the insulating pull rod through a spring.

Furthermore, one end of the pole is connected with a first feeder line and a second feeder line, a cushion block is arranged between the first feeder line and the second feeder line, and the first feeder line and the second feeder line are connected with the inner taper sleeve.

Furthermore, the sleeve is connected with the contact through two groups of branch buses and two groups of buses.

Furthermore, one end of the connecting rod extends to the outer side of the shell and is provided with a first gear in a sleeved mode, and the output end of the insulating mechanism is provided with a second gear meshed with the first gear in a sleeved mode.

Furthermore, the sliding guide sleeve is rotatably connected with the crank arm through a fixing screw.

Furthermore, the guide rod is rotatably connected with the support through a connecting sleeve, and a second spring contact finger is arranged between the connecting sleeve and the guide rod.

Furthermore, a supporting seat is arranged on the outer side of the turbine in the shell, and the worm is rotatably connected with the supporting seat through a flange bearing.

Furthermore, the inner wall of the shell is provided with a guide sleeve outside the connecting rod, the connecting rod is rotatably connected with the guide sleeve through a deep groove bearing, and the guide sleeve is sealed with the connecting rod through a sealing ring.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the gas insulation switch cabinet, the safe insulation distance of the three-station isolation mechanism is larger than that of the existing structure, the insulation capacity is better, the sliding guide sleeve is driven to stably move through the matching of the worm wheel, the worm and the sliding guide sleeve, when the worm stops, the worm wheel is matched with the worm wheel to play a limiting role in the sliding guide sleeve, so that the three working switches can be stably kept in a closing, opening or grounding state, the phenomena of poor contact or disconnection and the like are avoided, and the working stability of the device is ensured;

2. the support seat is matched with the flange bearing, so that the worm is supported, the worm is ensured to be stably contacted with the turbine, the guide sleeve is matched with the deep groove bearing, and the connecting rod is supported, so that the stability of the worm during rotation is further ensured.

Drawings

Fig. 1 is a schematic sectional front view of a gas insulated switchgear provided in an embodiment of the present invention when closing;

fig. 2 is a schematic sectional front view of a gas insulated switchgear cabinet according to an embodiment of the present invention, when grounded;

fig. 3 is a schematic sectional front view of a gas insulated switchgear according to an embodiment of the present invention;

fig. 4 is a schematic front sectional view of a pole provided according to an embodiment of the present invention;

fig. 5 is a schematic perspective view of a gas insulated switchgear according to an embodiment of the present invention when closing;

FIG. 6 is a schematic cross-sectional front view of a support base according to an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional front view of a support plate provided in accordance with an embodiment of the present invention;

FIG. 8 is a schematic perspective view of a support plate provided in accordance with an embodiment of the present invention;

FIG. 9 is a schematic perspective view of a hinge and a crank arm provided in accordance with an embodiment of the present invention;

FIG. 10 is a schematic side sectional view of a guide rod and guide sleeve provided in accordance with an embodiment of the invention;

fig. 11 is a schematic sectional top view of a gas insulated switchgear according to an embodiment of the present invention when closing;

fig. 12 is a schematic side sectional view of a gas insulated switchgear according to an embodiment of the present invention during closing.

In the figure: 1. a housing; 2. a circuit breaker mechanism; 3. an insulating mechanism; 4. a pole column; 5. an inner cone sleeve; 6. a bellows; 7. a guide bar; 8. a sliding guide sleeve; 9. a first spring finger; 10. a support plate; 11. a contact; 12. a sleeve; 13. a ground contact; 14. a rotating shaft; 15. a crank arm; 16. a turbine; 17. a connecting rod; 18. a worm; 19. a vacuum arc-extinguishing chamber; 20. a support; 21. an insulating pull rod; 22. soft connection; 23. a spring; 24. a first feeder line; 25. a second feeder line; 26. a cushion block; 27. a branch bus; 28. a first gear; 29. a second gear; 30. a set screw; 31. connecting sleeves; 32. a second spring contact finger; 33. a supporting seat; 34. a flange bearing; 35. a guide sleeve; 36. a deep groove bearing; 37. and a bus bar.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1-12, the invention provides a gas insulated switchgear, which comprises a housing 1, a three-station isolation mechanism, and a circuit breaker mechanism 2 and an insulation mechanism 3 which are arranged on the housing 1, wherein a plurality of groups of poles 4 are arranged in the housing 1, one end of each pole 4 is connected with an inner taper sleeve 5, and the other end of each pole 4 is connected with the circuit breaker mechanism 2 through a corrugated pipe 6; the three-station isolation mechanism comprises a support 20 arranged on the pole 4, the pole 4 is electrically connected with the support 20, a guide rod 7 in rotary connection is arranged in the support 20, the outer wall of the guide rod 7 is connected with a sliding guide sleeve 8 in a sliding manner, first spring contact fingers 9 are arranged at two ends of the inner wall of the sliding guide sleeve 8, a support plate 10 and a plurality of sleeve pipes 12 respectively corresponding to the pole 4 are arranged in the shell 1, a contact 11 matched with the sliding guide sleeve 8 is arranged on the support plate 10, the sleeve pipes 12 are connected with the corresponding contacts 11, and a grounding contact 13 and a grounding busbar matched with the sliding guide sleeve 8 are arranged in the shell 1; be equipped with the pivot 14 of rotating the connection in shell 1, in the pivot 14 on 8 one side of slip uide bushing is equipped with connecting lever 15, connecting lever 15 and adjacent 8 of slip uide bushing rotate and connect, the cover is equipped with turbine 16 in the pivot 14, be equipped with the connecting rod 17 of rotating the connection in shell 1, connecting rod 17 one end be equipped with turbine 16 engaged with worm 18 mutually, the connecting rod 17 other end with insulating mechanism 3 transmission is connected.

Specifically, during operation, the insulation mechanism 3 drives the connecting rod 17 to rotate, the worm 18 rotates along with the connecting rod 17 to drive the turbine 16 to rotate, the rotating shaft 14 rotates along with the turbine 16 to drive the connecting lever 15 to rotate, the connecting lever 15 drives the sliding guide sleeve 8 to move, the guide rod 7 swings around the support 20, when the connecting lever 15 drives the sliding guide sleeve 8 to move to a position between the grounding busbar and the support plate 10, the sliding guide sleeve 8 is only sleeved on the outer side of the guide rod 7, at this time, the three-station isolation mechanism is in a switching-off state, when the connecting lever 15 drives the sliding guide sleeve 8 to move to one side of the support plate 10 and is connected with the contact 11, the sliding guide sleeve 8 is simultaneously sleeved on the outer sides of the contact 11 and the guide rod 7, two first spring contact fingers 9 are respectively located on one side of the worm contact 11 and the guide rod 7, at this time, when the connecting lever 15 drives the sliding guide sleeve 8 to move to one side of the grounding busbar and is connected with the contact 11, the sliding guide sleeve 8 is in a switching-on state, when the connecting between the sliding guide sleeve 8 and the grounding busbar and the grounding contact 13, the contact is in a state, the three-station isolation mechanism is in a state, when the connecting structure is in a high-on-point, the connecting capability of the grounding contact, the grounding contact mechanism is ensured, the contact mechanism is a high-on the safety contact, the safety contact structure is ensured, the safety contact structure, when the contact is connected with the grounding contact 8, the safety contact structure is the safety contact 13, the safety contact structure is improved, when the safety contact structure is connected with the safety contact structure of the safety contact 8 and the safety contact 8, the sliding guide sleeve 8 is driven to move stably, when the worm 18 stops, the worm 18 is matched with the worm wheel 16, the sliding guide sleeve 8 is limited, the three working switches can be stably kept in a closing state, a breaking state or a grounding state, poor contact or disconnection and other phenomena are avoided, the working stability of the device is guaranteed, and optionally the first spring contact finger 9 is a watchband contact finger.

The utility model provides an embodiment, 4 one end of utmost point post is connected with feeder one 24 and feeder two 25, feeder one 24 with be equipped with cushion 26 between feeder two 25, feeder one 24 with feeder two 25 with interior taper sleeve 5 is connected, be equipped with vacuum interrupter 19 and insulating pull rod 21 in the utmost point post 4, insulating pull rod 21 one end with bellows 6 is connected, the insulating pull rod 21 other end is connected with flexible coupling 22, flexible coupling 22 is located vacuum interrupter 19 one side, flexible coupling 22 one end with support 20 electric connection, sleeve 12 is connected with contact 11 through two sets of branch generating lines 27 and two sets of generating lines 37.

Specifically, when current flows in from the inner cone sleeve 5 and flows to the static end of the vacuum arc-extinguishing chamber 19 in the pole 4 through the first feeder 24, the second feeder 25 and the cushion block 26, when the circuit breaker mechanism 2 pushes the corrugated tube 6 and the insulating pull rod 21 to approach the vacuum arc-extinguishing chamber 19, the flexible connection 22 moves along with the movement, when the flexible connection 22 is in contact with the moving end of the vacuum arc-extinguishing chamber 19, the current flows to the moving end from the static end of the vacuum arc-extinguishing chamber 19 and then flows to the support 20 through the flexible connection 22, when the three-station isolation mechanism is in a closing state, the current flows into the contact 11 through the guide rod 7, the first spring contact finger 9 and the sliding guide sleeve 8 and then flows into the sleeve 12 through the two sets of branch buses 27 and the two sets of buses 37, and finally flows out through the sleeve 12, when the circuit breaker mechanism 2 drives the corrugated tube 6 and the insulating pull rod 21 to move away from the vacuum arc-extinguishing chamber 19, the flexible connection 22 is not in contact with the moving end of the vacuum arc-extinguishing chamber 19, at this time, the vacuum arc-extinguishing chamber 19 is in a closing state, and the circuit breaker mechanism 2 is used for controlling the opening and closing of the vacuum arc-extinguishing chamber 19.

In this embodiment, the bellows 6 is elastically connected to the insulating pull rod 21 through the spring 23, and when the circuit breaker mechanism 2 pushes the bellows 6 and the insulating pull rod 21 to approach the vacuum interrupter 19, the spring 23 is in a compressed state, and pushes the insulating pull rod 21 and the flexible connection 22 to be tightly attached to the moving end of the vacuum interrupter 19, so that the working stability of the device is ensured.

In one embodiment, one end of the connecting rod 17 extends to the outside of the housing 1 and is sleeved with a first gear 28, and the output end of the insulating mechanism 3 is sleeved with a second gear 29 meshed with the first gear 28.

Specifically, the insulation mechanism 3 drives the second gear 29 to rotate, and the second gear 29 drives the first gear 28 to rotate, so as to drive the connecting rod 17 to rotate, thereby ensuring the stability of the connecting rod 17 during rotation.

In one embodiment, the sliding guide sleeve 8 is rotatably connected with the crank arm 15 through a fixing screw 30, so that the stability of the two during movement is ensured.

The utility model provides an embodiment, guide bar 7 through the adapter sleeve 31 with support 20 rotates to be connected, adapter sleeve 31 with be equipped with the second spring between the guide bar 7 and touch and indicate 32, adapter sleeve 31 plays the supporting role to guide bar 7, has guaranteed the stability when guide bar 7 rotates, and support 20 touches through the second spring and indicates 32 and guide bar 7 electric connection, and is optional, and the second spring touches and indicates 32 to touch and indicate for the watchband.

In one embodiment, a supporting seat 33 is arranged outside the turbine 16 in the housing 1, the worm 18 is rotatably connected with the supporting seat 33 through a flange bearing 34, a guide sleeve 35 is arranged outside the connecting rod 17 on the inner wall of the housing 1, the connecting rod 17 is rotatably connected with the guide sleeve 35 through a deep groove bearing 36, and the guide sleeve 35 is sealed with the connecting rod 17 through a sealing ring.

Specifically, the supporting seat 33 is matched with the flange bearing 34 to support the worm 18 and ensure the stable contact between the worm 18 and the worm wheel 16, and the guide sleeve 35 is matched with the deep groove bearing 36 to support the connecting rod 17, so that the stability of the rotation of the worm 18 is further ensured, and the influence of dust on the movement of the connecting rod 17 is reduced by the sealing ring.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be considered as the protection scope of the present invention.

Claims

1. A gas insulation switch cabinet is characterized by comprising a shell (1), a three-station isolation mechanism, a circuit breaker mechanism (2) and an insulation mechanism (3), wherein the circuit breaker mechanism (2) and the insulation mechanism (3) are arranged on the shell (1), a plurality of groups of poles (4) are arranged in the shell (1), one end of each pole (4) is connected with an inner taper sleeve (5), and the other end of each pole (4) is connected with the circuit breaker mechanism (2) through a corrugated pipe (6);

the three-station isolation mechanism comprises a support (20) arranged on the pole (4), the pole (4) is electrically connected with the support (20), a guide rod (7) connected in a rotating mode is arranged in the support (20), the outer wall of the guide rod (7) is connected with a sliding guide sleeve (8) in a sliding mode, first spring contact fingers (9) are arranged at two ends of the inner wall of the sliding guide sleeve (8), a support plate (10) and a plurality of sleeve pipes (12) corresponding to the pole (4) respectively are arranged in the shell (1), contacts (11) matched with the sliding guide sleeve (8) are arranged on the support plate (10), the sleeve pipes (12) are connected with the corresponding contacts (11), and a grounding contact (13) and a grounding busbar matched with the sliding guide sleeve (8) are arranged in the shell (1);

be equipped with pivot (14) that rotate the connection in shell (1), pivot (14) go up in slide guide sleeve (8) one side is equipped with crank arm (15), crank arm (15) and adjacent slide guide sleeve (8) rotate to be connected, the cover is equipped with turbine (16) in pivot (14), be equipped with in shell (1) and rotate connecting rod (17) of connecting, connecting rod (17) one end be equipped with turbine (16) engaged with worm (18), the connecting rod (17) other end with insulating mechanism (3) transmission is connected.

2. A gas insulated switchgear as claimed in claim 1, characterized in that a vacuum interrupter (19) and an insulating pull rod (21) are provided in the pole (4), one end of the insulating pull rod (21) is connected to the corrugated pipe (6), the other end of the insulating pull rod (21) is connected to a flexible connection (22), the flexible connection (22) is located on one side of the vacuum interrupter (19), and one end of the flexible connection (22) is electrically connected to the support (20).

3. A gas insulated switchgear cabinet according to claim 2, characterized in that the bellows (6) is resiliently connected to the insulating tie (21) by means of a spring (23).

4. The gas insulated switchgear cabinet according to claim 1, wherein one end of the pole (4) is connected to a first feeder line (24) and a second feeder line (25), a spacer block (26) is disposed between the first feeder line (24) and the second feeder line (25), and the first feeder line (24) and the second feeder line (25) are connected to the inner tapered sleeve (5).

5. A gas-insulated switchgear, as claimed in claim 1, characterized in that the bushing (12) is connected to the contact (11) via two sets of branch busbars (27) and two sets of busbars (37).

6. A gas-insulated switchgear cabinet as claimed in claim 1, characterized in that one end of the connecting rod (17) extends outside the housing (1) and is fitted with a first gear (28), and the output end of the insulating means (3) is fitted with a second gear (29) engaging with the first gear (28).

7. A gas insulated switchgear, as claimed in claim 1, characterized in that the sliding guide (8) is rotatably connected to the crank arm (15) by means of a fixing screw (30).

8. A gas-insulated switchgear cabinet as claimed in claim 1, characterized in that the guide rod (7) is rotatably connected to the carrier (20) by means of a connecting sleeve (31), and a second spring finger (32) is arranged between the connecting sleeve (31) and the guide rod (7).

9. A gas insulated switchgear cabinet according to claim 1, characterized in that a support (33) is provided in the housing (1) outside the worm wheel (16), and the worm (18) is rotatably connected to the support (33) by means of a flange bearing (34).

10. A gas insulated switchgear as claimed in claim 1, characterized in that the inner wall of the enclosure (1) is provided with a guiding sleeve (35) outside the connecting rod (17), the connecting rod (17) is rotatably connected to the guiding sleeve (35) by a deep groove bearing (36), and the guiding sleeve (35) is sealed with the connecting rod (17) by a sealing ring.