WO2009003345A1

WO2009003345A1 - Solid insulation full-closed loop networt cabinet

Info

Publication number: WO2009003345A1
Application number: PCT/CN2007/070675
Authority: WO
Inventors: Zhihong Zhao; Jie Wei; Lianhua Zhao; Jixing Liang; Xiangyang Qin; Zhongkai Liu
Original assignee: Beijing Sojo Electric Co., Ltd.
Priority date: 2007-07-05
Filing date: 2007-09-12
Publication date: 2009-01-08
Also published as: CN101340066B; CN101340066A

Abstract

A solid insulation full-closed loop network cabinet comprises at least a route of incoming line and a route of outgoing line. Each route comprises three-phase high voltage vacuum switch unit (1). The high voltage vacuum switch unit (1) is composed of a case (2), a cover (23), a track rack (22), a main switch (3), a disconnection switch (4), a grounding contact (16), a bus (7), a T-shaped contact (17), a flexible copper line (20), a double pass bushing (33) and a grounding transmission shaft (14). The cover (23) is provided above the case (2). One end of the track rack (22) is fixed on the cover (23). The bus (7) and grounding contact (16) are installed in the lower part of the case (2) respectively. The main switch (3) and the disconnection switch (4) are installed in the space that is surrounded by the cover (23) and the case (2). The double pass bushing (33) is installed on one side of the case (2). The grounding driving shaft (14) is installed on the cover (23) that is above the double pass bushing (33). The T-shaped contact (17) is installed in the case (2). One end of the flexible copper line (20) is connected with the main switch (3), and the other end is connected with the T-shaped contact (17).

Description

Solid insulated fully enclosed ring network cabinet

Technical field

The present invention relates to a circuit arrangement for an AC mains or AC distribution network, and more particularly to a solid insulated fully enclosed ring network cabinet.

Background technique

In the prior art, there is a gas insulated ring network cabinet, which uses gas to seal the high voltage vacuum switch; because the gas SF6 used is toxic after arc extinguishing, has a greenhouse effect, and is easy to leak, the metal box is bulky, The sealing requirements are high, the processing technology is complicated, the box cost is high, the maintenance inspection is complicated, the protection level is not enough, and the charged body is exposed, which is corroded by air and dust, which easily causes corrosion of the charged body and reduces the level of insulation. It is very easy to cause personal injury or death.

Summary of the invention

The object of the present invention is to provide a solid insulated fully enclosed ring network cabinet which is non-toxic, harmless, small in size, simple in process and low in maintenance cost.

In order to achieve the above object, the technical solution of the present invention is: A solid insulated fully enclosed ring network cabinet comprising at least one incoming line and at least one outgoing line, each of which includes a three-phase high voltage vacuum switch unit, the high voltage vacuum switch unit The housing, the cover, the track frame, the main switch, the isolating blade, the grounding contact, the bus bar, the T-shaped contact, the soft copper strip, the double-pass bushing and the grounding drive shaft, the cover is mounted above the housing, the track One end of the frame is fixed on the cover body, the bus bar and the ground contact are respectively mounted on the lower end of the casing, and the main switch and the isolating knife are respectively installed in the space formed by the cover body and the casing, and the double-pass bushing is mounted on the casing. The grounding drive shaft is mounted on the cover body at the upper end of the binding post, the τ-shaped contact is mounted in the housing, one end of the soft copper strip is connected to the main switch, and the other end is connected to the τ-shaped contact, wherein: the main switch The upper end is connected to the other end of the track frame, and the lower end of the main switch is connected to the bus bar; one end of the isolating knife is hinged to the double-pass bushing, and the upper end is connected to the grounding drive shaft, and the lower end thereof is connected with the grounding contact or the tau shape Head connected;

The solid insulated fully enclosed ring network cabinet of the present invention, wherein: the isolating knife comprises: an arm, an isolating tie rod, an isolated drive shaft, a gear mechanism and an isolating blade, and the two ends of the isolating rod are respectively hinged with the arm and the isolating blade The other end of the arm is connected to the isolated drive shaft, and the isolated drive shaft is rotated by the ground drive shaft through a gear mechanism. The isolated drive shaft is supported on the cover body, and the one end of the isolation blade is hinged at the double On the through sleeve, the other end is openably connected to the ground contact or the τ-shaped contact on the housing; The solid insulated fully enclosed ring network cabinet of the present invention, wherein: the main switch comprises: a square pull rod, a connecting piece, a guiding sleeve, an isolating square shaft, an insulating rod, a driving shaft arm, a contact spring, a split spring, a double-head screw a copper connecting post and a vacuum bubble, the trip spring is fixed at one end to the square pull rod, and the other end is fixed on the track frame welded on the support plate of the housing, and one end of the drive shaft arm is sleeved on the isolated square shaft, and One end is hinged on one end of the square pull rod, the isolated square shaft is fixed on the cover body, the other end of the square pull rod is hinged with the other end of the connecting piece, the other end of the connecting piece is connected with the screw, the screw thread is connected with the guiding sleeve, and the upper end of the insulating rod Extending into the guiding sleeve and guiding by the guiding sleeve, the lower end of the insulating rod is connected with the double-headed screw, the upper end and the lower end of the insulating rod are the pulling rods for removing the insulating layer, and the insulating rod sleeve is provided with a plurality of silicone rings made of silicone rubber, in several A silicone umbrella ring is arranged between the silicone ring, and a contact spring is arranged between the uppermost silicone umbrella ring and the guiding sleeve, and the lower part of the double-headed screw and the upper end of the vacuum bubble and the soft copper strip One end connected to the vacuum bubble column connections connected to the lower end of the copper, the copper busbar connection is connected to the column;

The solid insulated fully enclosed ring network cabinet of the present invention, wherein: the upper end of the vacuum bubble is provided with a moving contact, the lower end is provided with a static contact, the lower part of the double-headed screw and the soft copper band are connected with the moving contact, the copper connecting column and Static contacts are connected;

The solid insulated fully enclosed ring network cabinet of the present invention, wherein: the casing is made of epoxy resin, and the copper connecting post and the bus bar connected thereto are covered with a silicone rubber layer;

The solid insulated fully enclosed ring network cabinet of the present invention, wherein: the outer wall of the vacuum bubble is surrounded by a layer of silicone rubber bonded to the casing;

The solid insulated fully enclosed ring network cabinet of the present invention, wherein: the epoxy resin has a wall thickness of 10 mm - 15 mm, and the silicon rubber layer has a wall thickness of 8 to 10;

The solid insulated fully enclosed ring network cabinet of the present invention, wherein: the epoxy resin is 208:.

After adopting the above scheme, the solid insulated fully enclosed ring network cabinet of the present invention has a high-voltage vacuum switch with a fully enclosed solid package, which does not cause creepage, thereby improving the insulation level, and has significant safety and energy saving performance. The effect is that the air, moisture, dust and hot and cold air sources are isolated, effectively reducing the corrosion of the power supply body, stabilizing the output of the power supply voltage, reducing the number of maintenance of the equipment, reducing the cost, and prolonging the ring network cabinet. Service life; to achieve visualization, security, and high economic benefits.

Other details and features of the solid insulated ring network cabinet of the present invention will be apparent upon reading the embodiments described hereinafter.

DRAWINGS

Figure 1 is a general view of the solid insulated fully enclosed ring network cabinet of the present invention;

Figure 2 is a bottom view of Figure 1;

Figure 3 is a plan view of Figure 1; 4 is a schematic structural view of a single high-pressure vacuum switch unit of the solid insulated fully enclosed ring network cabinet of the present invention; and FIG. 5 is a side view of FIG.

detailed description

FIG. 1 is a general view of a solid insulated fully enclosed ring network cabinet according to the present invention, which includes a three-way high-pressure vacuum switch, and the bottom view of the ring network cabinet and the top view of the ring network cabinet shown in FIG. 2 and FIG. 3 can be seen. The wiring mode of the solid insulated ring network cabinet busbar, the high voltage vacuum switch 1 is composed of a housing 2, a cover 23, a track frame 22, a main switch 3, an isolating knife 4, a grounding contact 16, a bus bar 7, a T-shaped contact 17, The soft copper strip 20, the double-pass bushing 33 and the grounding drive shaft 14 are formed. The cover body 23 is mounted above the casing 2. One end of the track frame 22 is fixed on the cover body 23, and the bus bar 7 and the ground contact 16 are respectively mounted on The lower end of the casing 2, the main switch 3 and the isolating blade 4 are housed in the space formed by the casing 23 and the casing 2, the double-pass bushing 33 is mounted on one side of the casing 2, and the grounding transmission shaft 14 is mounted on the double-passing sleeve On the cover 23 at the upper end of the tube 33, the T-shaped contact 17 is housed in the housing 2, one end of the soft copper strip 20 is connected to the main switch 3, and the other end is connected to the T-shaped contact 17, the upper end of the main switch 3 and the trajectory The other end of the frame 22 is connected, and the lower end of the main switch 3 is connected to the bus bar 7; one end of the isolating blade 4 The double-pass bushing 33 is hinged, the upper end of which is connected to the grounding drive shaft 14, the lower end of which is connected to the grounding contact 16 or the T-shaped contact 17, the wall thickness of the casing 2 is 10 mm, and the casing 2 is made of 208L epoxy resin. .

4 and FIG. 5, the main switch 3 includes: a drive shaft arm 31, a square pull rod 28, a connecting piece 32, a guide sleeve 24, an insulating rod 21, an isolation square shaft 38, and a touch. The head spring 25, the branch spring 26, the double-headed screw 27, the vacuum bubble 18 and the copper connecting post 6, the split spring 26-end is fixed to the square pull rod 28, and the other end is fixed to the track welded on the housing support plate. On the frame 22, the drive shaft arm 31 is sleeved on the isolation square shaft 38, the other end is hinged on one end of the square rod 28, the isolation square shaft 38 is fixed on the cover body 23, and the other end of the square pull rod 28 is connected. The piece 32 is hinged, the other end of the connecting piece 32 is connected with the screw, and the screw thread is connected to the guiding sleeve 24. The upper end of the insulating rod 21 extends into the guiding sleeve 24 and is guided by the guiding sleeve 24, and the lower end of the insulating rod 21 and the double-headed screw 27 connection, the upper end and the lower end of the insulating rod 21 are pull rods for removing the insulating layer, the insulating rod 21 is covered with a plurality of silicone rings 37 made of silicone rubber, and a silicone umbrella ring 34 is arranged between the plurality of silicone rings 37, at the uppermost end A contact spring 25 is disposed between the silicone umbrella ring 34 and the guide sleeve 24. The lower portion of the double-headed screw 27 is connected to the movable contact 29 of the upper end of the vacuum bubble 18 and the soft copper strip 20, and the movable contact 29 of the lower end of the vacuum bubble 18 Connected to the copper connection post 6, the copper connection post 6 is connected to the bus bar 7. A layer of silicone glue 8 is placed around the inner wall of the vacuum bubble 18. The other end of the copper connecting post 6 is connected to the bus bar 7, and the copper connecting post 6 and the bus bar 7 are covered with a silicone rubber layer 8, and the silicone rubber layer 8 has a wall thickness of 8 mm.

As shown in FIG. 5, the isolating blade 4 includes: a crank arm 9, an isolating tie rod 10, an isolating transmission shaft 12, a gear mechanism 13 and an isolating blade 11, and the two ends of the isolating tie rod 10 are respectively hinged with the arm 9 and the isolating blade 11 Together, the other end of the arm 9 The isolated drive shaft 12 is connected to the driven shaft 12 through the gear mechanism 13 to drive the ground. The isolated drive shaft 12 is supported on the cover body 23. The one end of the isolating blade 11 is hinged on the double-passing sleeve 33. The other end is openably connected to the ground contact 16 or the T-shaped contact 7 on the housing 2, respectively.

The working principle of the high-pressure vacuum switch of the solid insulated ring network cabinet of the present invention is: When the movable contact 29 of the main switch 3 is disconnected from the static contact 35, the main switch 3 is disconnected. When the moving contact 29 of the main switch 3 is in contact with the fixed contact 35, the grounding drive shaft 14 rotates clockwise, and the isolated drive shaft 12 and the arm 9 are driven by the gear processing 13, and the arm 9 drives the isolation rod 10 to move, and the isolation rod 10 is isolated. The isolation blade 11 is driven to move upward, and the isolation blade 11 is connected to the T-shaped contact 17, completing the closing process. The grounding drive shaft 14 rotates counterclockwise, and the isolated drive shaft 12 and the arm 9 are driven by the gear processing 13. The arm 9 drives the isolation rod 10 to move, and the isolation rod 10 drives the isolation blade 11 to move downward, so that the isolation blade 11 and the ground contact 16 connections, complete the process of opening.

The solid insulated fully enclosed ring network cabinet of the invention adopts a fully enclosed solid package high voltage vacuum switch 1, and has a simple transmission structure, small occupied space, flexible movement, convenient installation, debugging and maintenance; the insulating rod 21 is made of silicone rubber. A plurality of silicone rings 37 increase the insulation performance of the insulating tie rods 21, which does not cause creepage, thereby improving the insulation level, and has a remarkable effect on safety and energy saving performance; and the casing 2 is made of epoxy. The resin, the copper connecting post 6, the busbar 7 and the vacuum bubble 18 are coated with silica gel. Therefore, the high-pressure vacuum switch 1 of the solid insulated fully enclosed ring network cabinet of the present invention isolates air, moisture, dust and hot and cold gas sources, effectively The ground slows down the corrosion of the power supply body, stabilizes the output of the power supply voltage, reduces the number of maintenance of the equipment, reduces the cost, and prolongs the service life of the ring network cabinet; it is visualized, has a sense of security, and achieves high economic benefits.

Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of the present invention.

Claims

1. A solid insulated fully enclosed ring network cabinet comprising at least one incoming line and at least one outgoing line, each path comprising a three-phase high voltage vacuum switch unit (1), said high voltage vacuum switch unit (1) being by a housing (2) , cover (23), track frame (22), main switch (3), isolation knife (4), ground contact (16), bus bar (7), T-shaped contact (17), soft copper strip (20 ), a double-pass bushing (33) and a grounding drive shaft (14), the cover body (23) is mounted above the casing (2), and one end of the track frame (22) is fixed on the cover body (23), the bus bar (7) and the grounding contact (16) are respectively mounted on the lower end of the housing (2), and the main switch (3) and the isolating blade (4) are mounted on the cover

(23) In the space composed of the casing (2), the double-pass bushing (33) is mounted on one side of the casing (2), and the grounding transmission shaft (14) is mounted on the upper end of the double-passing bushing (33). On the body (23), the T-shaped contact (17) is mounted on the housing

(2) Inside, the soft copper strip (20) has one end connected to the main switch (3) and the other end connected to the T-shaped contact (17), characterized in that: the upper end of the main switch (3) and the track frame ( 22) connected to the other end, main switch

The lower end of (3) is connected to the busbar (7); one end of the isolating blade (4) is hinged to the double-pass bushing (33), and its upper end is connected to the grounding drive shaft (14), and its lower end is connected to the grounding contact (16). ) or T-shaped contacts (17) are connected.

2. The solid insulated fully enclosed ring network cabinet according to claim 1, wherein: the isolating blade (4) comprises: an arm (9), an isolating tie rod (10), an isolated drive shaft (12), a gear The mechanism (13) and the isolating blade (11), the two ends of the isolating tie rod (10) are respectively hinged with the arm (9) and the isolating blade (11), and the other end of the arm (9) is isolated The transmission shaft (12) is connected, and the isolated transmission shaft (12) is rotated by a grounding transmission shaft (14) through a gear mechanism (13), and the isolated transmission shaft (12) is supported on the cover body (23) The one end of the isolating blade (11) is hinged on the double-pass bushing (33), and the other end is openably connected to the grounding contact (16) or the T-shaped contact (17) on the casing (2). .

3. The solid insulated fully enclosed ring network cabinet according to claim 2, wherein: the main switch (3) comprises: a square tie rod (28), a connecting piece (32), a guiding sleeve (24), and an isolating side. Shaft (38), drive shaft arm (31), insulation rod (21), contact spring (25), branch spring (26), double-head screw (27), copper connection post (6) and vacuum bubble ( 18), the opening spring (26) end is fixed to the square pull rod (28), and the other end is fixed on the track frame (22) welded on the support plate of the casing (2), the drive shaft arm ( 31) One end is sleeved on the isolating square shaft (38), the other end is hinged on one end of the square pull rod (28), the isolating square shaft (38) is fixed on the cover body (23), and the other end of the square pull rod (28) One end of the connecting piece (32) is hinged, the other end of the connecting piece (32) is connected with the screw, and the threaded connection of the screw is connected to the guiding sleeve (24), the insulating rod (21)

1 The end protrudes into the guiding sleeve (24) and is guided by the guiding sleeve (24). The lower end of the insulating rod (21) is connected with the double-headed screw (27), and the upper end and the lower end of the insulating rod (21) are the rods with the insulating layer removed, and the insulation is insulated. The drawbar (21) is jacketed with a number of silicone rings (37) made of silicone rubber. A silicone umbrella ring (34) is placed between several silicone rings (37). The top silicone ring (34) and guide sleeve are placed on the top. (24) A contact spring (25) is installed between the lower end of the double-headed screw (27) and the upper end of the vacuum bubble (18) and one end of the soft copper strip (20), and the lower end of the vacuum bubble (18) is copper. The connecting post (6) is connected, and the copper connecting post (6) is connected to the busbar (7).

4. The solid insulated fully enclosed ring network cabinet according to claim 3, wherein: the upper end of the vacuum bubble (18) is provided with a movable contact (29), and the lower end is provided with a static contact (35), The lower part of the head screw (27) and the soft copper strip (20) are connected to the movable contact (29), and the copper connecting post (6) is connected to the stationary contact (35).

5. The solid insulated fully enclosed ring network cabinet according to claim 4, wherein: said casing (2) is made of epoxy resin, said copper connecting column (6) and a bus bar connected thereto ( 7) The outer layer is covered with a silicone rubber layer (8).

6. The solid insulated fully enclosed ring network cabinet according to claim 5, wherein: the outer wall of the vacuum bubble (18) is surrounded by a layer of silicone rubber bonded to the casing (2) (8). .

The solid insulated fully enclosed ring network cabinet according to claim 5 or 6, wherein: the epoxy resin shell (2) has a wall thickness of 10 mm - 15 mm, and the wall of the silicone rubber layer (8) The thickness is 8mm - 10mm.

8. The solid insulated hermetic ring network cabinet according to claim 7, wherein: said epoxy resin is 208L.

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