CN2343666Y

CN2343666Y - Drum-type load switch with isolated opens

Info

Publication number: CN2343666Y
Application number: CN 98217291
Authority: CN
Inventors: 戴立德
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-08-17
Filing date: 1998-08-17
Publication date: 1999-10-13
Anticipated expiration: 2008-08-17

Abstract

The utility model relates to a drum-type load switch with isolated fractures, comprising an insulating cylinder, wherein, the insulating cylinder is a movable three-phase cuboid insulating cylinder (1) which is connected with a spindle (7) on an operation control box (6); an operating handle (14) which can rotate left and right is positioned on the switching position, the isolation position or the earthing position of the insulating cylinder (1); the earthing position lying at the horizontal plane of the insulating cylinder is a middle partition board of isolated fractures to replace a complete partition board of a primary side power and a secondary side power; vacuum envelope (8) or sulphur hexafluoride gas (SF6) is filled in the insulating cylinder (1) to be used as arc-extinguishing medium; the utility model has the advantages of strong switching capability, long service life and simple switch cabinet structure.

Description

Has isolation fracture drum-type on-load switch

The utility model relates to a kind of drum-type on-load switch, relates in particular to a kind of isolation fracture drum-type on-load switch that has.

At present, high voltage load switch mainly contains three kinds of airload switch, vacuum load switch and sulfur hexafluoride gas (SF6) on-load switches, and its pluses and minuses are as follows:

1. airload switch:

Advantage: owing to there is visible isolation fracture, simplify the structure of switch cubicle, make things convenient for the replacing of repair and maintenance and fuse.

Shortcoming: because arc-extinguishing medium is an air, so connecting-disconnecting function is lower, electric life is shorter, and connecting-disconnecting function is subjected to the enforcement of the influence of atmospheric conditions, particularly IEC420-90 (GB16926-97), and the deficiency of the ability of cut-offfing is more obvious.

2. vacuum load switch:

Advantage: remedy the deficiency of airload switch aspect connecting-disconnecting function and electric life.

Shortcoming:,, in switch cubicle, will design the insulation plate owing to adopt the structural shape of airload switch though vacuum load switch can be with visible isolation fracture, therefore make the switch cubicle structure complicated, reliability reduces, and cost increases, and fail safe is not enough especially.

3. sulfur hexafluoride gas (SF6) on-load switch:

Advantage: identical with vacuum load switch, remedy the deficiency of airload switch aspect connecting-disconnecting function and electric life.

Shortcoming: do not have isolation fracture, more do not have visible isolation fracture, therefore give maintenance and maintenance is made troubles and dangerous.

The purpose of this utility model is to provide a kind of isolation fracture drum-type on-load switch that has, and not only has visible isolation fracture, has strong switching capability and long electric life again, and the structure of switch cubicle is simplified in the automatic formation of insulating barrier.

The novel purpose of this use is to realize like this, a kind of have an isolation fracture drum-type on-load switch, comprise an insulating cylinder, its characteristics are that described insulating cylinder is the insulating cylinder that moves the cuboid of three phase places, be connected with the main shaft on the operation control box, the operating handle of left rotation and right rotation is put insulating cylinder in " combined floodgate " " isolation " and " ground connection " position, the insulating cylinder itself that " ground connection " position is on the horizontal plane is the central dividing plate of isolation fracture, substitutes the division board that primary side and secondary side power supply are isolated fully.Described operating handle inserts the main shaft on the operation control box, the insulating cylinder outside of dextrorotation " combined floodgate " position up and down six insulation copper rods presss from both sides with binding post on once reaching six insulators of secondary side and combines, and the insulating cylinder of left-handed " isolation " or " ground connection " position forms visible isolation fracture.The insulating cylinder interior arrangement vacuum bubbles of described three phase place cuboids or filling sulfur hexafluoride gas (SF6), sightless arc extinguishing fracture is provided with in it.There are a visible isolation fracture and inside that one invisible isolation fracture is arranged in the outside of described switch.

Because the utility model adopts said structure, has isolation fracture drum-type on-load switch, have strong switching capability and long electric life, the structure of switch cubicle has been simplified in the automatic formation of insulating barrier.

Cooperate the following drawings, embodiment is described in detail, wherein:

Fig. 1 is the isometric front view that the drum-type on-load switch that the utlity model has isolation fracture is in " isolation " position;

Fig. 2 A the utlity model has isolation fracture to adopt vacuum rotary drum formula on-load switch to be in the cutaway view of " isolation " position;

Fig. 2 B the utlity model has isolation fracture to adopt sulfur hexafluoride gas (SF6) drum-type on-load switch to be in the cutaway view of " isolation " position;

Fig. 3 A is the cutaway view that the vacuum rotary drum formula on-load switch that the utlity model has isolation fracture is in " closing " position;

Fig. 3 B is the cutaway view that the vacuum rotary drum formula on-load switch that the utlity model has isolation fracture is in " branch " position;

Fig. 3 C is the cutaway view that the vacuum rotary drum formula on-load switch that the utlity model has isolation fracture is in " isolation " position;

Fig. 3 D is the cutaway view that the vacuum rotary drum formula on-load switch that the utlity model has isolation fracture is in " ground connection " position;

Fig. 4 A is the cutaway view that sulfur hexafluoride gas (SF6) the drum-type on-load switch that the utlity model has isolation fracture is in " closing " position;

Fig. 4 B is the cutaway view that figure sulfur hexafluoride gas (SF6) the drum-type on-load switch that the utlity model has isolation fracture is in " branch " position;

Fig. 4 C is the cutaway view that figure sulfur hexafluoride gas (SF6) the drum-type on-load switch that the utlity model has isolation fracture is in " isolation " position;

Fig. 4 D is the cutaway view that figure sulfur hexafluoride gas (SF6) the drum-type on-load switch that the utlity model has isolation fracture is in " ground connection " position;

Fig. 5 A is the attached fuse front view of drum-type on-load switch that the utlity model has isolation fracture;

Fig. 5 B is the attached fuse end view of drum-type on-load switch that the utlity model has isolation fracture;

Fig. 6 installs drum-type loading switch cabinet front view and the end view with isolation fracture of the present utility model;

As shown in Figure 1, a kind of have an isolation fracture drum-type on-load switch, comprise an insulating cylinder, be characterized in that described insulating cylinder is the insulating cylinder 1 that moves the cuboid of three phase places, be connected with the main shaft 7 on the operation control box 6, the operating handle 14 of left rotation and right rotation (shown in Fig. 5 B) is put insulating cylinder 1 in " combined floodgate " " isolation " or " ground connection " position, the insulating cylinder itself that " ground connection " position is on the horizontal plane is the central dividing plate of isolation fracture, substitutes the division board that primary side and secondary side power supply are isolated fully.The main shaft 7 that described operating handle 14 inserts on the operation control box 6, outside six the insulation copper rods 4 up and down of the insulating cylinder 1 of dextrorotation " combined floodgate " position press from both sides 3 with binding post on once reaching six insulators 2 of secondary side and combine the visible isolation fracture of insulating cylinder 1 formation of left-handed " isolation " or " ground connection " position.The insulating cylinder 1 interior arrangement vacuum bubbles 7 or the filling sulfur hexafluoride gas (SF6) of described three phase place cuboids, sightless arc extinguishing fracture is provided with in it.There are a visible isolation fracture and inside that one invisible isolation fracture is arranged in the outside of described switch.

Shown in Fig. 2 A, comprise the described rotatable insulating cylinder 1 that fuses, two sides once reach six insulators 2 of secondary side, connecting line terminal folder 3 on six insulators 2, six insulating cylinder inside extend to outside matching with binding post and are provided with insulating rod 4 up and down, six insulator 2 upper ends connect six ground connection copper folders 5, the bottom connects supporting steel plate 10, an operation control box 6, control cabinet main shaft 7 (as shown in Figure 1) is at the on-load switch middle part, insulating cylinder internally provided with vacuum bubble 8, vacuum bubbles 8 has interior contacts 9.

Shown in Fig. 2 A, in rotating insulated tube 1, place vacuum bubbles, just as Fig. 3 A, the insulating rod 4 that insulating cylinder 1 is outer and the binding post of insulator 2 press from both sides 3 driving fits, and major loop is switched on when the position of switch " closing ".Shown in Fig. 5 B, operating handle 14 inserts control cabinet 6, and the interior contacts 9 of the vacuum bubbles 8 shown in Fig. 2 A is separated, and shown in Fig. 3 B, described switch is in " branch " position.Fig. 1 operation control box 6 and the left-handed insulating cylinder 1 of operating handle 14 operations shown in Fig. 5 B for another example, insulation copper rod 4 separates with binding post folder 3 on the insulator, forms visible isolation fracture, and promptly shown in Fig. 3 C, described switch is in " isolation " position.Rotating insulated tube 1 forms the dividing plate between fracture automatically, coexists on the horizontal line with the insulator supporting steel plate 10 of Fig. 2 A, and the power supply of primary side and secondary side is isolated fully.Insulating cylinder 1 external insulation rod 4 shown in Fig. 2 A and the 5 mutual driving fits of ground connection copper folder.The interior contacts 9 of operating handle 14 operation vacuum bubbles 8 is closed the position of closing " closing ", as Fig. 3 D.

Shown in Fig. 2 B, contact folder 11 and main contact copper rod 12 are set, filling sulphur hexafluoride (SF6) gas in the arc control device 13 in the described insulating cylinder 1.

Rotation main contact copper rod 12 joins with contact folder 11, and switch is in the position of " closing ", as Fig. 4 A.Shown in Fig. 2 B, the binding post on rotating insulated tube 1 external insulation rod 4 and the insulator presss from both sides 3 driving fits, the major loop energising.Shown in Fig. 5 B, operating handle 14 inserts operation control box 6, and rotation main contact copper rod 12 separates with the contact folder, and shown in Fig. 4 B, switch is in the position of " branch ".The operating handle 14 of operation control box 6 and Fig. 5 B, left-handed insulating cylinder 1, external insulation copper rod 4 separates with binding post folder 3 on the insulator, forms the visible isolation fracture as Fig. 2 B, and switch is in " isolation " position as Fig. 4 C.Operation control box 6, insulating cylinder 1 itself form the division board between fracture automatically, coexist on the horizontal line with insulator supporting steel plate 10, and the power supply of primary side and secondary side is isolated fully.External insulation copper rod 4 and the 5 mutual driving fits of ground connection copper folder, main contact copper rod 12 is harmonious with contact folder 11 becomes the position of " closing ", and described switch is in " ground connection " position, as Fig. 4 D.

As shown in Figure 6, switch cubicle with drum-type on-load switch of isolation fracture, interlock on the door handle 15 of operation control box 6 and switch cubicle, as Fig. 3 A, 4A is when the position of switch " closing ", can't rotate rotating insulated tube 1, when rotating rotating insulated tube 1 to the isolated location, switch should be in the position of " branch ", as Fig. 3 B, shown in the 4B, operation control box 6, rotating insulated tube 1 is in " isolation " position, as Fig. 3 C, shown in the 4C, operation control box 6, rotating insulated tube 1 is in " ground connection " position, as Fig. 3 D, shown in the 4D, open the switch cubicle door.Described switch cubicle door is in when opening, and the power supply that once reaches secondary side is isolated fully, as Fig. 3 D, 4D.

Described drum-type on-load switch with isolation fracture no matter be to adopt vacuum or sulfur hexafluoride gas (SF6) to make arc-extinguishing medium, can install three fuses 16 additional, as Fig. 5 A, shown in the 5B, described fuse 16 joins by link gear and operation control box, and switch is in energising, as Fig. 3 A, 4A promptly is the position that is in " closing ", any one fuse blows, switch jumps out of the position of " branch ", as Fig. 3 B and Fig. 4 B.Above-mentioned drum-type on-load switch with isolation fracture has strong switching capability and long electric life, and the structure of switch cubicle has been simplified in the automatic formation of insulation board.

Claims

1. one kind has isolation fracture drum-type on-load switch, comprise an insulating cylinder, it is characterized in that described insulating cylinder is the insulating cylinder (1) that moves the cuboid of three phase places, be connected with the main shaft (7) on the operation control box (6), the operating handle of left rotation and right rotation (14) is put insulating cylinder (1) in " combined floodgate " " isolation " or " ground connection " position, the insulating cylinder itself that " ground connection " position is on the horizontal plane is the central dividing plate of isolation fracture, substitutes the division board that primary side and secondary side power supply are isolated fully.

2. according to claim 1 have an isolation fracture drum-type on-load switch, it is characterized in that: operating handle (14) inserts the main shaft (7) on the operation control box (6), outside six the insulation copper rods (4) up and down of the insulating cylinder (1) of dextrorotation " combined floodgate " position press from both sides (3) with binding post on once reaching six insulators of secondary side (2) and combine, and the insulating cylinder (1) of left-handed " isolation " or " ground connection " position forms visible isolation fracture.

3. according to claim 1 and 2 have an isolation fracture drum-type on-load switch, it is characterized in that: the insulating cylinder of described three phase place cuboids (1) interior arrangement vacuum bubbles (7) or filling sulfur hexafluoride gas (SF6), sightless arc extinguishing fracture is provided with in it.

4. according to claim 1 and 2 have an isolation fracture drum-type on-load switch, it is characterized in that: have a visible isolation fracture and inside that one invisible isolation fracture is arranged in the outside of described switch.