CN211479924U

CN211479924U - Small-size isolator of aerifing cubical switchboard

Info

Publication number: CN211479924U
Application number: CN201922393045.0U
Authority: CN
Inventors: 牛海楠; 孔国威; 魏杰; 秦保平; 谢顺亮; 张建楠; 李萍; 邹博昱
Original assignee: Shuangjie Electric Hefei Co ltd
Current assignee: Shuangjie Electric Hefei Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-09-11
Anticipated expiration: 2029-12-26

Abstract

The utility model relates to a small-size isolator of gas-filled switchgear, including the drive shaft that adopts insulating material preparation, drive shaft one end is passed through the bearing and is installed on the cabinet body, the drive shaft other end passes through transmission and is connected with isolation mechanism, install three group interval distribution's isolation knife tackle spare in the drive shaft, the drive shaft front side is equipped with the three combined floodgate touch multitouch that corresponds with isolation knife tackle spare, the combined floodgate touch multitouch passes through first insulator and fixes on the cabinet body, the drive shaft rear side is equipped with the three wiring copper bar that corresponds with isolation knife tackle spare, three isolation knife tackle spare is connected with the wiring copper bar that corresponds through the flexible coupling respectively, wiring copper bar lower extreme extension passes through the second insulator to be fixed on the cabinet body, the drive shaft downside is equipped with the three ground connection sword that corresponds. The utility model discloses overall arrangement is compact reasonable, and the action is unanimous during the operation, and insulating properties is good to have the miniaturization that small advantage is favorable to aerifing the cabinet.

Description

Small-size isolator of aerifing cubical switchboard

Technical Field

The utility model relates to an isolator field, concretely relates to aerify cubical switchboard's small-size isolator.

Background

The isolating switch is widely used in a power grid as an electrically-opened isolating device. The isolating switch has no special arc extinguisher, so that it can cut off load current and short-circuit current, and has electrodynamic stability and thermal stability, and can prevent the contact from being automatically separated or burnt out due to the passage of short-circuit current. With the development of power grids, the manufacturing level and the operation level of various main devices are improved, the power grids have high requirements on the reliability of the operation of the devices, and the problem of the improvement of isolating switches is solved on schedule.

The three-station isolating switch in the prior art is basically composed of a wiring copper bar end, an outgoing line connecting end, a grounding end and a disconnecting link, and the disconnection of a power distribution system is realized by adjusting the position of the disconnecting link; the disconnecting link is usually driven to move by a mechanical arm, the opening and closing resistance of the disconnecting link is large, the smoothness of the movement of the disconnecting link is influenced, and the phenomenon of jamming occurs; the three-station disconnecting switch has asynchronous movement, so that the electrified phase loss is caused; the volume is large, the miniaturization of the inflatable cabinet is not facilitated, and the development trend of the power grid industry cannot be adapted.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a whole layout is compact reasonable, and the action is smooth unanimous, and insulating properties is good to have small advantage and be favorable to aerifing miniaturized of cabinet isolator for the cabinet.

In order to solve the above problems in the prior art, the present invention provides a small-sized isolation switch for an inflatable switch cabinet, which comprises a driving shaft made of an insulating material, wherein one end of the driving shaft is mounted on a cabinet body through a bearing, the other end of the driving shaft is connected with an isolation mechanism through a transmission device, three groups of isolation knife assemblies are mounted on the driving shaft at intervals, three closing contact seats corresponding to the isolation knife assemblies are arranged on the front side of the driving shaft, the closing contact seats are fixed on the cabinet body through a first insulator, three wiring copper bars corresponding to the isolation knife assemblies are arranged on the rear side of the driving shaft, the three isolation knife assemblies are respectively connected with corresponding wiring copper bars through flexible connections, the lower ends of the wiring copper bars extend forwards to form extension parts, the extension parts are fixed on the cabinet body through a second insulator, three grounding knives corresponding to the isolation knife assemblies are arranged on the lower side of, the grounding knife is fixed on the cabinet body through a grounding copper bar.

Further, the utility model relates to a small-size isolator of gas-filled switchgear, wherein, keep apart the knife tackle spare and include blade holder and cutting board, the blade holder is fixed in the drive shaft, the cutting board parallel fixation is on the blade holder.

Further, the utility model relates to an aerify cubical switchboard's small-size isolator, wherein, the one end of flexible coupling is fixed on the blade holder through first preforming through turning over a formation U-shaped and through the first preforming, and the flexible coupling other end passes through the second preforming and fixes on the wiring copper bar.

Further, the utility model relates to an aerify cubical switchboard's small-size isolator, wherein, wiring copper bar upper end is equipped with the insulating barrier who blocks the flexible coupling, the insulating barrier both sides are equipped with two side banners.

Further, the utility model relates to a small-size isolator of gas-filled switchgear, wherein, the combined floodgate touches the seat and includes the connecting plate, and the connecting plate passes through first insulator to be fixed on the cabinet body, and the vertical fixation has the combined floodgate contact on the connecting plate.

Further, the utility model relates to a small-size isolator of gas-filled switchgear, wherein, still be fixed with the combined floodgate supporting seat between the connecting plate and the cabinet body.

Further, the utility model relates to an aerify cubical switchboard's small-size isolator, wherein, transmission includes flange cover and switching axle, the flange cover is fixed on the cabinet body, the switching axle is established in the flange cover, the switching axle is equipped with the spliced eye for one side of drive shaft, the drive shaft passes through the spliced eye and pegs graft in the switching axle, be equipped with the bayonet joint on the switching axle, the switching axle passes through the bayonet joint and fixes on isolation mechanism.

Further, the utility model relates to an aerify cubical switchboard's small-size isolator, wherein, the drive shaft is the hexagonal axle construction, be equipped with the hexagonal hole that matches with the drive shaft on the blade holder, the blade holder cover is established in the drive shaft, and the drive shaft is equipped with spacing round pin axle in the both sides of blade holder.

Further, the utility model relates to a small-size isolator of gas-filled switchgear, wherein, wiring copper bar middle part is equipped with the spacing seat of ground connection that is used for blockking the isolation knife tackle spare.

Further, the utility model relates to a aerify cubical switchboard's small-size isolator, wherein, the combined floodgate initiating terminal of combined floodgate contact is fin shape, the ground connection initiating terminal of earthing knife is fin shape.

The utility model relates to a small-size isolator of gas-filled switchgear compares with prior art, has following advantage:

1. the three isolating knife components in the utility model are arranged on the driving rotating shaft, and the front side and the lower side of the driving shaft are provided with a closing contact seat and a grounding knife which are matched with the three isolating knives; the whole layout is compact and reasonable, the actions are consistent, the volume is smaller, and the miniaturization of the inflatable cabinet is more facilitated;

2. the closing contact seat and the wiring copper bar in the utility model are fixed on the cabinet body by the insulator, so that the whole insulation performance is stably improved;

3. the utility model discloses a flexible coupling is connected isolation knife tackle spare and wiring copper bar to reduce the resistance of isolator divide-shut brake, made the isolator action more smooth, consequently the phenomenon of combined floodgate not in place and the bite can not appear.

The small-sized isolation switch of the gas-filled switch cabinet of the present invention will be further described in detail with reference to the specific embodiments shown in the drawings.

Drawings

Fig. 1 is a perspective view of a small-sized isolation switch of an inflatable switch cabinet according to the present invention;

fig. 2 is a schematic side view of a small-sized isolation switch of an inflatable switch cabinet according to the present invention;

FIG. 3 is a schematic sectional view of the driving shaft of the present invention;

FIG. 4 is an enlarged view of a portion A of FIG. 3;

fig. 5 is a schematic structural view of a closing contact seat of the present invention;

fig. 6 is a schematic structural view of the middle grounding knife of the present invention.

Detailed Description

As shown in fig. 1 to 2, the embodiment of the small-sized isolating switch of the gas-filled switch cabinet of the present invention comprises a driving shaft 1 made of insulating material, one end of the driving shaft 1 is installed on the cabinet body through a bearing 11, the other end of the driving shaft 1 is connected with an isolating mechanism through a transmission device 12, three groups of isolating knife assemblies 2 distributed at intervals are installed on the driving shaft 1, three closing contact seats 3 corresponding to the isolating knife assemblies 2 are arranged on the front side of the driving shaft 1, the closing contact seats 3 are fixed on the cabinet body through a first insulator 31, three wiring copper bars 4 corresponding to the isolating knife assemblies 2 are arranged on the rear side of the driving shaft 1, the three isolating knife assemblies 2 are respectively connected with the corresponding wiring copper bars 4 through flexible connections 5, the lower ends of the wiring copper bars 4 extend forward to form extension portions 41, the extension portions 41 are fixed on the cabinet body through a second insulator 42, three grounding knives 6 corresponding to the isolating knife assemblies 2, the grounding knife 6 is fixed on the cabinet body through a grounding copper bar 61.

The whole layout of the utility model is compact by arranging the design, and the whole assembly space is reduced; when the isolating mechanism moves, kinetic energy is provided by the isolating mechanism, and the driving shaft 1 is driven to rotate by the transmission device 12 so as to drive the isolating knife assembly to move; when switching on, the driving shaft 1 drives the isolation knife assembly 2 to rotate and is connected with the switching-on contact base 3 to complete switching-on operation; when switching off, the driving shaft 1 drives the isolating knife assembly 2 to rotate and disconnect with the switching-on contact base 3 to complete the switching-off operation; when the grounding is carried out, the driving shaft 1 drives the isolation knife assembly 2 to be connected with the grounding knife 6 to complete the grounding operation; the utility model adopts the assembly mode of the flexible connection to replace the traditional mechanical arm pulling assembly mode, the resistance of the movement is reduced when switching operation is carried out, and the movement is smoother; the copper ground strap 4 is used to connect a ground wire or rod when fitted into the gas-filled switchgear.

In an embodiment of the present invention, in order to prevent the tool apron amplitude from being too large when the isolating and isolating tool assembly 2 is grounded, the middle portion of the wiring copper bar 4 is provided with a grounding limiting seat 43 for blocking the isolating tool assembly 2; the isolating knife assembly 2 comprises a knife seat 21 and a knife plate 22, the knife seat 21 is fixed on the driving shaft 1, and the knife plate 22 is fixed on the knife seat 21 in parallel.

In an embodiment of the present invention, as shown in fig. 2, one end of the flexible connection 5 in this embodiment is bent to form a U-shape and is fixed on the tool post 21 through the first pressing piece 51, the other end of the flexible connection 5 is fixed on the wiring copper bar 4 through the second pressing piece 52, the purpose of the above design is to make the deformation of the flexible connection 5 larger and more adaptive, and increase the service life of the flexible connection 5.

The utility model discloses an in the embodiment, for the holistic insulating properties of reinforcing isolator, prevent that the cabinet body is touched to flexible coupling 5 when the action, be equipped with the insulating barrier 8 that blocks flexible coupling 5 on wiring copper bar 4, insulating barrier 8 both sides are equipped with two side bangs 81, and wherein insulating barrier 8 adopts the polycarbonate material preparation.

In an embodiment of the present invention, the closing contact base 3 is fixed on the cabinet body through two first insulators 31, the closing contact base 3 includes a connecting plate 32, a closing contact 33 is vertically fixed on the connecting plate 32, and the connecting plate 32 and the closing contact 33 can also be integrally manufactured to enhance the overall mechanical strength; in order to enhance the connection stability of the connection plate 32, a closing support seat 34 is further fixed between the connection plate 32 and the cabinet.

The utility model relates to an embodiment, as shown in fig. 3, drive shaft 1 is the hexagonal axle structure, is equipped with the hexagonal hole that matches with drive shaft 1 on blade holder 21, and blade holder 21 cover is established on drive shaft 1, and drive shaft 1 is equipped with spacing round pin axle 13 in the both sides of blade holder 21, prevents blade holder 21 drunkenness on drive shaft 1.

The utility model discloses an embodiment, as shown in fig. 4, transmission 12 includes flange cover 121 and adapting shaft 122, and flange cover 121 fixes on the cabinet body, and the cover of adapting shaft 122 is established in flange cover 121, and adapting shaft 122 is equipped with the spliced eye for one side of drive shaft 1, and drive shaft 1 passes through the spliced eye to be pegged graft in adapting shaft 122, is equipped with bayonet joint 123 on adapting shaft 122, and adapting shaft 122 passes through bayonet joint 123 to be fixed on isolating mechanism.

The utility model discloses an embodiment, as shown in fig. 5 and fig. 6, the combined floodgate initiating terminal of combined floodgate contact 33 is the fin shape, and the ground connection initiating terminal of earthing knife 6 is the fin shape, adopts the fin shape design to make isolator can be more accurate location when carrying out combined floodgate operation and ground connection operation on combined floodgate contact 33 and earthing knife 6.

In the description of the present invention, it is to be understood that the terms "longitudinal," "length," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered as limiting.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second" and "first" 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" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The above embodiments are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the claimed invention, and various modifications made by those skilled in the art according to the technical solutions of the present invention should fall within the scope of the present invention as defined by the claims.

Claims

1. The small isolating switch of the gas-filled switch cabinet is characterized by comprising a driving shaft (1) made of an insulating material, wherein one end of the driving shaft (1) is installed on a cabinet body through a bearing (11), the other end of the driving shaft (1) is connected with an isolating mechanism through a transmission device (12), three groups of isolating knife assemblies (2) distributed at intervals are installed on the driving shaft (1), three closing contact seats (3) corresponding to the isolating knife assemblies (2) are arranged on the front side of the driving shaft (1), the closing contact seats (3) are fixed on the cabinet body through a first insulator (31), three wiring copper bars (4) corresponding to the isolating knife assemblies (2) are arranged on the rear side of the driving shaft (1), the three isolating knife assemblies (2) are respectively connected with corresponding wiring copper bars (4) through flexible connections (5), and the lower ends of the wiring copper bars (4) extend forwards to form an extending part (41), extension (41) are fixed on the cabinet body through second insulator (42), drive shaft (1) downside is equipped with three earthing knife (6) that correspond with isolation knife tackle spare (2), earthing knife (6) are fixed on the cabinet body through ground connection copper bar (61).

2. A miniature disconnector according to claim 1, characterized in that the disconnector module (2) comprises a holder (21) and a knife plate (22), the holder (21) being fixed to the drive shaft (1), the knife plate (22) being fixed in parallel to the holder (21).

3. The miniature isolating switch of the air-filled switch cabinet as claimed in claim 2, wherein one end of the flexible connection (5) is bent back to form a U shape and is fixed on the tool apron (21) through a first pressing sheet (51), and the other end of the flexible connection (5) is fixed on the wiring copper bar (4) through a second pressing sheet (52).

4. The miniature isolating switch of the air-filled switch cabinet according to claim 1, wherein an insulating partition (8) for blocking the flexible connection (5) is arranged at the upper end of the wiring copper bar (4), and two side banners (81) are arranged on two sides of the insulating partition (8).

5. The miniature disconnector according to claim 1, wherein the closing contact base (3) comprises a connecting plate (32), the connecting plate (32) is fixed to the tank body through a first insulator (31), and a closing contact (33) is vertically fixed to the connecting plate (32).

6. The miniature isolating switch of the air-filled switch cabinet as claimed in claim 5, wherein a closing support seat (34) is further fixed between the connecting plate (32) and the cabinet body.

7. The small-sized isolating switch of the air-filled switch cabinet as claimed in claim 1, wherein the transmission device (12) comprises a flange sleeve (121) and a transfer shaft (122), the flange sleeve (121) is fixed on the cabinet body, the transfer shaft (122) is sleeved in the flange sleeve (121), one side of the transfer shaft (122) opposite to the driving shaft (1) is provided with a plug hole, the driving shaft (1) is plugged in the transfer shaft (122) through the plug hole, the transfer shaft (122) is provided with a plug (123), and the transfer shaft (122) is fixed on the isolating mechanism through the plug (123).

8. The small-sized isolating switch of the air-filled switch cabinet is characterized in that the driving shaft (1) is of a hexagonal shaft structure, a hexagonal hole matched with the driving shaft (1) is formed in the tool apron (21), the tool apron (21) is sleeved on the driving shaft (1), and the driving shaft (1) is provided with limiting pin shafts (13) on two sides of the tool apron (21).

9. The miniature isolating switch of the air-filled switch cabinet as claimed in claim 1, wherein the middle of the wiring copper bar (4) is provided with a grounding limiting seat (43) for blocking the isolating knife assembly (2).

10. The miniature isolating switch of the inflatable switch cabinet as claimed in claim 5, wherein the switching-on starting end of the switching-on contact (33) is in a fin shape, and the grounding starting end of the grounding knife (6) is in a fin shape.