CN103400721A

CN103400721A - Split-spoon change-over switch in on-load tap-changer

Info

Publication number: CN103400721A
Application number: CN2013103528768A
Authority: CN
Inventors: 谢雅琪
Original assignee: GUIZHOU CHANGZHENG POWER EQUIPMENT CO Ltd
Current assignee: GUIZHOU CHANGZHENG POWER EQUIPMENT CO Ltd
Priority date: 2013-08-09
Filing date: 2013-08-09
Publication date: 2013-11-20
Anticipated expiration: 2033-08-09
Also published as: CN103400721B

Abstract

The invention relates to a split-spoon change-over switch in an on-load tap-changer, which comprises boxes, liner bushings I, shafts I, shifting forks, adjusting shims and shaft sleeves I, wherein the boxes serve as bearing and mounting parts of the whole split-spoon change-over switch; shaft sleeves II are mounted on the boxes; belleville springs are mounted between fixed contacts and the shaft sleeves II; liner bushings III are positioned in the inner chambers of the boxes; the liner bushings I are mounted on the shafts I to prevent the shifting forks from sliding up and down; the shifting forks are tightened with supporting parts III together; the supporting parts III are tightened with supporting parts II together; the supporting parts II are sleeved on shaft III, and can rotate flexibly; the shafts I are mounted on the shaft sleeves I in the boxes; the shifting forks are mounted on the shafts I, and can rotate by winding along the shafts I; the adjusting shims are used for adjusting the clearances between the shafts I and the shifting forks; the shaft sleeves I are in tight fit with holes on the boxes, and fixed on the boxes. During the switch process of the split-spoon change-over switch, as the distances of the fixed contacts are larger, electric is not easy to discharge among the fixed contacts, and the reliability of the switch is enabled to be improved.

Description

Opposite opened change over switch on load tap changer

Technical field

The invention belongs to dynamo-electric manufacturing field, particularly the opposite opened change over switch used of a kind of oil immersed type vacuum on-load tap-changer diverter switch.

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Background technology

In existing oil immersed type vacuum on-load tap-changer, what it adopted is high-low shifting column change-over switch, and the complex structure of high-low shifting column change-over switch must guarantee that in assembling process two intermediate plates of moving contact are in the center of fixed contact, and efficiency of assembling is low.

Summary of the invention

For overcoming above-mentioned defect, the technical problem to be solved in the present invention is to provide a kind of simple in structure, the opposite opened change over switch that the on load tap changer diverter switch of being convenient to assemble is used.

Opposite opened change over switch on load tap changer: this change over switch comprises:

---box, the carrying installing component of whole opposite opened change over switch; Axle sleeve two is loaded on box; Disk spring is loaded between fixed contact and axle sleeve two; Lining three is positioned at the inner chamber of box;

---lining one, be loaded on axle one, prevent that shift fork from sliding up and down; Shift fork and supporter three tighten together; Supporter three tightens together with supporter two; Supporter two is sleeved on axle three, but flexible rotating;

---axle one is loaded in the axle sleeve one on described box;

---shift fork, be loaded on described axle one, can rotate around axle one;

---adjust pad, be used for adjusting the gap between described axle one and shift fork;

---axle sleeve one is tightly fixed on box with the hole on described box;

---moving contact, with axle three be interference fit; Pad compresses moving contact by axle three riveted joints, prevents that moving contact is because switching over comes off;

---supporter one, be sleeved on axle three, can be around axle three flexible rotatings;

---axle two is loaded in the axle sleeve one on two boxes of up and down;

---spring, be contained on supporter, give moving contact and first contact head pressure of stationary contact; Fixed contact is loaded in axle sleeve two; Wire is loaded on fixed contact; Fixed contact is by the riveted joint clamping platen, and pressing plate 17 contacts with wire 22, guarantees that wire reliably contacts with fixed contact;

---adjust pad, be used for adjusting the gap between axle sleeve one and axle two;

---lining two, be loaded between axle three and moving contact, axle three is rivetted;

During the on load tap changer switching, the slot poking ware on the on load tap changer body is stirred shift fork, and shift fork rotates around axle one, and shift fork and supporter two, supporter three connect as one, and shift fork drives supporter three and rotates with supporter two, and impeller-hub three motions; Because moving contact and axle three are integrated, therefore moving contact moves together with axle three, when the slot poking ware on load tap changer moves to while with shift fork, breaking away from, this moment, moving contact turned over the center line of box, spring promotes moving contact and continues transhipment, until moving contact contacts with fixed contact and reaches inactive state, this moment, spring still can be given first pressure of movable contact, and this pressure can guarantee that moving contact contacts with the reliable of fixed contact.

The purpose of this invention is to provide a kind of opposite opened change over switch, the opposite opened change over switch in handoff procedure,, because distance between fixed contact is larger, is difficult for discharge between fixed contact, the reliability of switch is improved.And the present invention is simple in structure, compact, is easy to assembling.

Description of drawings

Fig. 1 is opposite opened change over switch front view of the present invention;

Fig. 2 is opposite opened change over switch vertical view of the present invention.

Embodiment

For existing technological deficiency, the purpose of patent of the present invention is to provide a kind of opposite opened change over switch, and this change over switch is in course of action, because the distance between fixed contact is larger, therefore the fixed contact of opposite opened change over switch is difficult for breakdownly, and the reliability of switch is improved.And the present invention is simple in structure, compact, is easy to assembling.

As shown in Figure 1 and Figure 2, the opposite opened change over switch on load tap changer, this change over switch comprises:

Box 1, the carrying installing component of whole opposite opened change over switch; Axle sleeve 2 19 is loaded on box 1; Disk spring 20 is loaded between fixed contact 18 and axle sleeve 2 19; Lining 3 21 is positioned at the inner chamber of box 1; Lining 1, be loaded on axle 1, prevents that shift fork 4 from sliding up and down; Shift fork 4 tightens together with supporter 3 16; Supporter 3 16 tightens together with supporter 2 14; Supporter 2 14 is sleeved on axle 3 13, but flexible rotating; Axle 1, be loaded in the axle sleeve 1 on described box 1; Shift fork 4, be loaded on described axle 1, can rotate around axle 1; Adjust pad 5, be used for adjusting the gap between described axle 1 and shift fork 4;

Axle sleeve 1, be tightly fixed on box 1 with the hole on described box 1; Moving contact 7, with axle 3 13 be interference fit; Pad 15 compresses moving contact 7 by axle 3 13 riveted joints, prevents that moving contact 7 is because switching over comes off; Supporter 1, be sleeved on axle 3 13, can be around axle 3 13 flexible rotatings;

Axle 29, be loaded in the axle sleeve 1 on two boxes of up and down; Spring 10, be contained on supporter 8, gives moving contact 7 and 18 1 contact head pressure of fixed contact; Fixed contact 18 is loaded in axle sleeve 2 19; Wire 22 is loaded on fixed contact 18; Fixed contact 18 is by riveted joint clamping platen 17, and pressing plate 17 contacts with wire 22, guarantees that wire 22 reliably contacts with fixed contact 18; Adjust pad 11, be used for adjusting the gap between axle sleeve 1 and axle 29; Lining 2 12, be loaded between axle 3 13 and moving contact 7, and axle 3 13 is rivetted;

During the on load tap changer switching, slot poking ware on the on load tap changer body is stirred shift fork 4, and shift fork 4 rotates around axle 1, and shift fork 4 connects as one with supporter 2 14, supporter 3 16, shift fork 4 drives supporter 3 16 and rotates with supporter 2 14, and impeller-hub 3 13 motions; Because moving contact 8 and axle 3 13 are integrated, therefore moving contact 8 moves together with axle 3 13, when the slot poking ware on load tap changer moves to shift fork 4 disengaging, this moment, moving contact 7 turned over the center line of box 1, spring 10 promotes moving contact 7 and continues transhipment, until moving contact 7 contacts with fixed contact 18 and reaches inactive state, this moment, spring 10 still can be given first pressure of movable contact, and this pressure can guarantee that moving contact 7 contacts with the reliable of fixed contact 18.

Claims

1. the opposite opened change over switch on load tap changer, it is characterized in that: this change over switch comprises:

---box (1), the carrying installing component of whole opposite opened change over switch; Axle sleeve two (19) is loaded on box (1); Disk spring (20) is loaded between fixed contact (18) and axle sleeve two (19); Lining three (21) is positioned at the inner chamber of box (1);

---lining one (2), be loaded on axle one (3), prevent that shift fork (4) from sliding up and down; Shift fork (4) tightens together with supporter three (16); Supporter three (16) tightens together with supporter two (14); Supporter two (14) is sleeved on axle three (13), but flexible rotating;

---axle one (3) is loaded in the axle sleeve one (6) on described box (1);

---shift fork (4), be loaded on described axle one (3), can rotate around axle one (3);

---adjust pad (5), be used for adjusting the gap between described axle one (3) and shift fork (4);

---axle sleeve one (6) is tightly fixed on box (1) with the hole on described box (1);

---moving contact (7), with axle three (13) be interference fit; Pad (15) compresses moving contact (7) by axle three (13) riveted joints, prevents that moving contact (7) is because switching over comes off;

---supporter one (8), be sleeved on axle three (13), can be around axle three (13) flexible rotatings;

---axle two (9) is loaded in the axle sleeve one (6) on two boxes of up and down;

---spring (10), be contained on supporter (8), give moving contact (7) and (18) contact head pressure of fixed contact; Fixed contact (18) is loaded in axle sleeve two (19); Wire (22) is loaded on fixed contact (18); Fixed contact (18) is by riveted joint clamping platen (17), and pressing plate (17) contacts with wire (22), guarantees that wire (22) reliably contacts with fixed contact (18);

---adjust pad (11), be used for adjusting the gap between axle sleeve one (6) and axle two (9);

---lining two (12), be loaded between axle three (13) and moving contact (7), axle three (1) 3 is rivetted;

During the on load tap changer switching, slot poking ware on the on load tap changer body is stirred shift fork (4), shift fork (4) rotates around axle one (3), shift fork (4) connects as one with supporter two (14), supporter three (16), shift fork (4) drives supporter three (16) and rotates with supporter two (14), and impeller-hub three (13) motions; Because moving contact (8) and axle three (13) are integrated, therefore moving contact (8) moves together with axle three (13), when the slot poking ware on load tap changer moves to while with shift fork (4), breaking away from, moving contact this moment (7) has turned over the center line of box (1), spring (10) promotes moving contact (7) and continues transhipment, until moving contact (7) contacts with fixed contact (18) and reaches inactive state, spring this moment (10) still can be given first pressure of movable contact, and this pressure can guarantee reliable contact of moving contact (7) and fixed contact (18).