CN209216872U - A kind of transformer vacuum switch - Google Patents

Abstract

The utility model provides a kind of transformer vacuum switch, includes shell, isolation knife and breaker；Isolation knife chamber and wire connection cavity are equipped in shell, it is intracavitary that isolation knife is located at isolation knife, and connect isolation knife connecting lever and isolation knife handle, travel switch top plate is fixedly mounted on the axis of isolation knife connecting lever, it is moved by isolation knife connecting lever and drives pressing stroke switch, breaker described in travel switch combined floodgate or separating brake, breaker are mounted on the intracorporal bottom plate of the shell；It is switched using one stroke is installed on the isolation switch of high-pressure vacuum switch additional, when making isolation switch close not in place using a kind of travel switch, breaker cannot close a floodgate its main technology, when isolation switch does not have full disjunction, breaker separating brake, prevents maloperation from burning isolation switch.

Description

A kind of transformer vacuum switch

Technical field

The utility model relates to the technical fields of transformer switch, more specifically refer to a kind of transformer vacuum switch.

Background technique

It is moved at present for the flame-proof mine that 10KV (6KV) electric power mining transformer system is controlled, protected and measured Dynamic substation is switched with transformer vacuum.Usually used flameproof mining mobile transformer substation is opened with transformer vacuum in the market It closes, mainly by vacuum circuit breaker, voltage transformer, current transformer, varistor, isolation switch, static contact, comprehensive protection device Deng composition main chamber, the composition such as junction box, insulating sleeve, conducting rod, inlet-outlet line device.This flameproof mining mobile transformer substation is used Transformer vacuum switch, the live parts such as operating mechanism and vacuum arc chamber for being used due to deenergizing circuit front and back is arranged, so will Isolation switch designs the top isolation knife chamber for being mounted on breaker, and three current transformers are separately mounted to mutual on rear square flange On sensor mounting plate, isolation knife bent plate and the breaker cable connection that is flexible coupling, isolation knife bent plate and static contact, connecting lever form every From disconnecting link.

After isolation switch closes a floodgate, breaker could close a floodgate, and isolation switch could be opened after breaker open operation, from electricity angle Degree says that there are certain drawbacks for this assembly system, in use due to isolation switch, due to artificial, is easy Occur to close a floodgate breaker, such long-play, isolation knife moving contact and the static contact not in place of just closing since contact resistance is big, temperature Liter is excessively high, easily burns, causes the accident, influences to produce.

Therefore, it is necessary to develop a kind of transformer vacuum switch.

Summary of the invention

The technical problem to be solved by the utility model is to provide a kind of materials few, at low cost, installation, operation, maintenance side Just transformer vacuum switch.

In order to solve the above-mentioned technical problem, the utility model provides a kind of transformer vacuum switch, includes shell, isolation Knife and breaker, the shell is interior to be equipped with isolation knife chamber and wire connection cavity, and it is intracavitary that the isolation knife is located at isolation knife, and connects isolation Travel switch top plate is fixedly mounted on the axis of the isolation knife connecting lever, is moved by isolation knife connecting lever for knife connecting lever and isolation knife handle Pressing stroke switch, breaker described in the travel switch combined floodgate or separating brake are driven, the breaker is mounted in the shell Bottom plate on.

In above structure, the main chamber of the isolation knife chamber and the shell, wire connection cavity are explosion-proof chamber.

In above structure, the travel switch top plate is bent angle handware plate.

In above structure, the front of the isolation knife chamber is equipped with a round observation window, and the door closure of the shell is equipped with One rectangular observation window.

In above structure, the lower part of the door closure inboard is equipped with ten buttons, comprehensive protection device and Switching Power Supply.

In above structure, the right front of the shell is equipped with combined floodgate axis, isolation axis, emergency stop block push button, blocking bolt And orifice plate.

In above structure, there are three isolation knife bent plate, isolation knife connecting lever and nine core connecting terminals for dress on the orifice plate.

In above structure, set on the partition of the isolation knife chamber there are three static contact.

In above structure, it further includes junction box, and described junction box's the right and left is respectively equipped with elbow wire connection cavity, one A clamp nut is equipped with cable crimping chamber, platen on the elbow wire connection cavity.

In above structure, the shell, junction box, shell door closure be all made of 8mm thick steel plate.

The beneficial effect of the utility model compared with prior art is: using one bent angle of installation on isolation knife connecting lever axis Part travel switch top plate installs a travel switch on junction box's side wall, when the movement of disconnecting switch connecting lever, stroke is driven to open Top plate pressing stroke switch is closed, breaker when isolation knife closes a floodgate not in place is adjusted to and closes not brake application, when isolation knife separating brake is not also disconnected When opening, separating brake avoids scaling loss isolation knife accident and occurs breaker so that the safety that ensure that isolation knife combined floodgate is in place；? Underground installation, operation, easy to maintain, reduction underground labour's manipulation strength, the simple easy processing manufacture of structure, are widely used in coal mine It on the high-voltage switch gear of lower central substation, exploiting field mobile substation or exploiting field distributor point, reduces costs, reduces the event of switch Hinder incidence, extends the service life of switch；Reliably protecting safety as high_voltage isolation knife.

Detailed description of the invention

Fig. 1 is the structural front view of the utility model specific embodiment；

Fig. 2 is the structure left view of the utility model specific embodiment；

Fig. 3 is the structure right view of the utility model specific embodiment；

Fig. 4 is the structure top view of the utility model specific embodiment

Fig. 5 is the static contact structure schematic diagram of the utility model specific embodiment.

Appended drawing reference

Door closure 1, shell 2, linkage 3, isolation knife chamber lid plate 4, wire-incoming chamber cover board 5, communicating joint 6, bend group welding 7, after Square flange 8, crimping chamber 9, wiring velar plate 10, caution board 11, ground connection label 12, energy storage axle 13, energy accumulation handle 14, handle cover 15, chain button 16, isolation knife handle 17, isolation axis 18, briquetting 19, pressing plate 20, interlock switch 21, confirmation label 22, isolation Knife connecting lever 23, nameplate 24, mutual inductor mounting plate 25, connecting cable 26, nine core terminals 27, static contact 28, switch base 29, stroke are opened Close mounting plate 30, travel switch 31, travel switch top plate 32, observation window 33, blocking bolt bracket 34, blocking bolt 35, retaining ring 36, deduction cap 37, breaker 38, varistor 39, travel switch fixed plate 40.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

As shown in Figures 1 to 5, specific embodiment of the utility model includes shell 2, isolation knife and breaker 38；Shell Isolation knife chamber and wire connection cavity are equipped in body 2, it is intracavitary that isolation knife is located at isolation knife, and connects isolation knife connecting lever 23 and isolation knife handle 17, travel switch top plate 32 is fixedly mounted on the axis of isolation knife connecting lever 23, is moved by isolation knife connecting lever 23 and pressing stroke is driven to open 31 are closed, breaker 38 described in the combined floodgate of travel switch 31 or separating brake, breaker 38 is mounted on the bottom plate in the shell 2.

Further, the main chamber of isolation knife chamber and shell 2, wire connection cavity are explosion-proof chamber, ensure that transformer high-voltage vacuum The explosion insulation performance of switch, the effect demand for underground coal mine.

Further, the front of isolation knife chamber is equipped with a round observation window 33, and the door closure 1 of shell 2 is equipped with a side Shape observation window 33.The inboard lower part of door closure 1 is equipped with ten buttons, comprehensive protection device and Switching Power Supply.

Further, travel switch top plate 32 is bent angle handware plate, under the drive of isolation knife connecting lever 23, is directly controlled disconnected Road device 38 realizes combined floodgate or separating brake.

Further, the right front of shell 2 is equipped with combined floodgate axis, isolation axis 18, emergency stop block push button, blocking bolt and hole Plate.There are three isolation knife bent plate, isolation knife connecting lever 23 and nine core connecting terminals for dress on orifice plate.

Further, static contact structure as shown in Figure 5, two chambers have a partition before and after isolation knife chamber and junction box, on partition If there are three static contacts 28, there are the insulation board of triangle in each 29 two sides of isolation knife bent plate.The insulation board of triangle is located at switch 29 two sides of seat, the isolation knife bent plate dielectric strength of insulation board higher than ordinary rectangular 10mm is high, and creepage distance is long, it is not easy to be electrically shocked It wears, securely and reliably.

Further, it further includes junction box, and junction box's the right and left is respectively equipped with an elbow wire connection cavity, a compression Nut is equipped with cable crimping chamber 9, platen on elbow wire connection cavity.Using compression when facilitating wiring.

Further, shell 2, junction box, shell 2 door closure 1 be all made of 8mm thick steel plate and be made.Bending strength and Service performance is preferable.

As shown in Fig. 2, the right side of vacuum switch is door closure 1, be equipped on shell 2 observation window 33, blocking bolt bracket 34, Blocking bolt 35, isolation knife connecting lever 23, travel switch top plate 32, travel switch 31, travel switch mounting plate 30, travel switch are solid Fixed board 40, switch base 29, static contact 28, isolation knife connecting lever 23 with axis 18 is isolated, is connected by briquetting 19 and pressing plate 20, isolation knife Handle 17 connects shell and door closure using linkage 3.Chain button 16, interlock switch 21 are housed in the lower part of isolation axis 18.

As shown in figure 3, the right side of shell 2 is equipped with equipped with nine core terminals 27, rear square flange 8, mutual inductor mounting plate 25, lower part Breaker 38, cable connection 26, varistor 39, top are equipped with isolation knife chamber lid plate 4, wire-incoming chamber cover board 5.

As shown in Figure 1, earthing screw 12 is fixed on two side lower parts of shell 2, the right side of shell 2 is also equipped with energy storage axle 13, energy accumulation handle 14, handle cover 15, two upper lateral parts are respectively equipped with a communicating joint 6, bend group weldings 7, a crimping chambers 9, connection jaws Cover board 10 forms a complete vacuum switch.

Overload fault countdown function is increased in display function, overload time can be seen, intuitive, accurate, reliable.

The underground coal mine that the utility model is suitable for having the danger of the Mixed Gases Explosions such as methane, to 10KV (6KV), specified frequency The mobile substation power supply system of rate 50Hz, rated current 500A and following three-phase alternating current isolated neutral is controlled, is protected Shield and measurement.It is generally used for underground coal mine central substation, working section sub station or exploiting field distributor point, as mobile substation high pressure Side control is used together with mobile substation low-pressure side guard box.

The utility model is used installs an angle Support travel switch top plate 32 additional, in junction box on 23 axis of isolation knife connecting lever One travel switch 31 is installed on side wall, when the movement of disconnecting switch connecting lever, drives 32 pressing stroke of travel switch top plate switch 31, it is adjusted to breaker 38 when isolation knife closes a floodgate not in place and closes not brake application, when isolation knife separating brake does not disconnect also, breaker 38 is Separating brake avoids the generation of scaling loss isolation knife accident so that the safety that ensure that isolation knife combined floodgate is in place；Underground installation, operation, It is easy to maintain, reduce underground labour's manipulation strength, structure simple easy processing manufacture, be widely used in underground coal mine central substation, It on the high-pressure vacuum switch of the mobile substation of working section sub station or exploiting field distributor point, reduces costs, reduces the event of switch Hinder incidence, extends the service life of switch；Reliably protecting safety as high_voltage isolation knife.

The foregoing is merely this patent preferred embodiments, not limit this patent range, all using specification and attached Equivalent structure or equivalent flow shift made by figure content is directly or indirectly used in other relevant technical fields, belongs to The scope of this patent.

Claims (10)

1. a kind of transformer vacuum switch, includes shell, isolation knife and breaker；It is characterized by: being equipped in the shell Isolation knife chamber and wire connection cavity, it is intracavitary that the isolation knife is located at isolation knife, and connects isolation knife connecting lever and isolation knife handle, it is described every Travel switch top plate is fixedly mounted on axis from knife connecting lever, is moved by isolation knife connecting lever and drives pressing stroke switch, the stroke Breaker described in switch combined floodgate or separating brake, the breaker are mounted on the intracorporal bottom plate of the shell.

2. transformer vacuum switch as described in claim 1, it is characterised in that: the master of the isolation knife chamber and the shell Chamber, wire connection cavity are explosion-proof chamber.

3. transformer vacuum switch as described in claim 1, it is characterised in that: the travel switch top plate is bent angle handware Plate.

4. transformer vacuum switch as described in claim 1, it is characterised in that: it is round that the front of the isolation knife chamber is equipped with one The door closure of observation window, the shell is equipped with a rectangular observation window.

5. transformer vacuum switch as claimed in claim 4, it is characterised in that: the lower part of the door closure inboard is equipped with ten Button, comprehensive protection device and Switching Power Supply.

6. transformer vacuum switch as described in claim 1, it is characterised in that: the right front of the shell, which is equipped with, to close a floodgate Axis, isolation axis, emergency stop block push button, blocking bolt and orifice plate.

7. transformer vacuum switch as claimed in claim 6, it is characterised in that: there are three isolation knife is curved for dress on the orifice plate Plate, isolation knife connecting lever and nine core connecting terminals.

8. transformer vacuum switch as described in claim 1, it is characterised in that: there are three being set on the partition of the isolation knife chamber Static contact, the isolation knife bent plate are equipped with the insulation board of triangle.

9. transformer vacuum switch as claimed in claim 8, it is characterised in that: it further includes junction box, and the junction box is left Right both sides are respectively equipped with an elbow wire connection cavity, a clamp nut, and cable crimping chamber, pressure are housed on the elbow wire connection cavity Disk.

10. transformer vacuum as claimed in claim 9 switch, it is characterised in that: the shell, junction box, shell door closure It is all made of 8mm thick steel plate.