CN115036172B

CN115036172B - Pressure equalizing device added outside common vacuum arc-extinguishing chamber

Info

Publication number: CN115036172B
Application number: CN202210802267.7A
Authority: CN
Inventors: 欧阳飞; 周倜
Original assignee: Hubei Dayu Hanguang Vacuum Electronics Co ltd
Current assignee: Hubei Dayu Hanguang Vacuum Electronics Co ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2023-09-19
Anticipated expiration: 2042-07-07
Also published as: CN115036172A

Abstract

The invention discloses a voltage equalizing device added outside a common vacuum arc-extinguishing chamber, which comprises a vacuum arc-extinguishing chamber, wherein the top and the bottom of the vacuum arc-extinguishing chamber are respectively provided with a metal end cover, the top of the metal end cover above is provided with an upper conducting rod, the bottom end of the upper conducting rod penetrates through the metal end cover and extends to the inside of the vacuum arc-extinguishing chamber, the bottom of the metal end cover below is provided with a lower conducting rod, the top end of the lower conducting rod penetrates through the metal end cover and extends to the inside of the vacuum arc-extinguishing chamber, and the left side of the vacuum arc-extinguishing chamber is fixedly provided with a mounting sleeve. This kind of at the outside pressure-equalizing device that increases of ordinary vacuum arc-extinguishing chamber, through quick joint mechanism's setting, realized the quick joint dismouting to the pressure-equalizing device, avoided using a large amount of bolts to install fixedly, compare in traditional mounting means, this kind of dismouting mode easy operation need not with the help of external tool, and the dismouting is efficient.

Description

Pressure equalizing device added outside common vacuum arc-extinguishing chamber

Technical Field

The invention relates to the technical field of voltage equalizing, in particular to a voltage equalizing device added outside a common vacuum arc-extinguishing chamber.

Background

The vacuum arc-extinguishing chamber, also called vacuum switch tube, is a core component of a medium-high voltage power switch, and has the main functions of enabling the medium-high voltage power switch to quickly extinguish arc and inhibit current after the power supply is cut off through the excellent insulativity of vacuum in the tube, so as to avoid accidents and accidents. Has the advantages of energy saving, material saving, fire prevention, explosion prevention, small volume, long service life low maintenance cost, reliable operation, no pollution and the like. The vacuum arc-extinguishing chamber is divided into an arc-extinguishing chamber for a circuit breaker and an arc-extinguishing chamber for a load switch from the application aspect, wherein the arc-extinguishing chamber for the circuit breaker is mainly used for a transformer substation in an electric power department and a power grid facility, and the arc-extinguishing chamber for the load switch is mainly used for an end user of a power grid.

The problem that ordinary vacuum interrupter is at the during operation, the internal voltage is insufficient or voltage class is too high can take place, can add the pressure-equalizing device in vacuum interrupter outside and be used for improving the reliability and the insulating properties of explosion chamber, but current pressure-equalizing device is generally installed through a large amount of bolts and the outer wall of explosion chamber and is connected, the dismouting is got up and is needed to be with the help of the screwdriver instrument, more troublesome, after installing pressure-equalizing device, still need be connected connecting plug on the vacuum interrupter with pressure-equalizing device after, just can let pressure-equalizing device work, the operation is got up more loaded down with trivial details, in addition, current pressure-equalizing device is relatively poor at long-time during operation heat dissipation function, and external dust enters into the inside of device from the louvre easily, be difficult to clear up, to this, we propose a ordinary pressure-equalizing device that the outside of vacuum interrupter increases to solve above-mentioned problem.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the voltage-sharing device which is added outside the common vacuum arc-extinguishing chamber, so that the problems that the existing voltage-sharing device is troublesome to assemble and disassemble, the voltage-sharing device can work only after the connecting plug on the vacuum arc-extinguishing chamber is connected with the voltage-sharing device after the voltage-sharing device is installed, the operation is complicated, the heat dissipation function of the existing voltage-sharing device is poor during long-time work, and external dust easily enters the device from the heat dissipation holes and is difficult to clean are solved.

In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a common vacuum interrupter outside pressure equalizing device that increases, includes the vacuum interrupter, the top and the bottom of vacuum interrupter all are provided with the metal end cover, the top of metal end cover is provided with the conducting rod, the bottom of going up the conducting rod runs through the metal end cover and extends to the inside of vacuum interrupter, below the bottom of metal end cover is provided with the conducting rod down, the top of conducting rod runs through the metal end cover and extends to the inside of vacuum interrupter, the left side of vacuum interrupter is fixed with the installation cover, the inside of installation cover is provided with the pressure equalizer, be provided with quick joint mechanism between pressure equalizer and the installation cover; the quick clamping mechanism comprises sliding rods which are connected to the front side and the rear side of an installation sleeve in a sliding mode, square grooves are formed in the front side and the rear side of the inner wall of the installation sleeve, opposite ends of the two sliding rods penetrate through the installation sleeve and extend to the inside of the square grooves, inserting grooves are formed in the front side and the rear side of the pressure equalizer, handles are fixed to the ends, away from each other, of the two sliding rods, trapezoidal inserting blocks are fixed to the opposite ends of the two sliding rods, the opposite sides of the two trapezoidal inserting blocks penetrate through the inserting grooves and extend to the inside of the inserting grooves, first springs are sleeved on the outer surfaces of the two sliding rods, the opposite ends of the two first springs are fixedly connected with one side of the trapezoidal inserting blocks, one ends, away from each other, of the two first springs are fixedly connected with the inner wall of the square grooves, sliding plates are connected between the inner walls of the installation sleeve in a sliding mode, the tops of the sliding plates are in contact extrusion with the bottoms of the pressure equalizer, second springs are fixed between the bottoms of the sliding plates and the inner walls of the installation sleeve, and automatic inserting assemblies are arranged below the sliding plates; the automatic plug assembly comprises a through hole which is formed in the bottom of an installation sleeve in a penetrating mode, a wire is arranged below the installation sleeve, a metal pipe is fixed at the top of the inner wall of the installation sleeve, a plug connector is fixed at the top of the wire, the wire and the top of the plug connector penetrate through the through hole and the metal pipe and extend to the top of the metal pipe, a left semicircular baffle and a right semicircular baffle are respectively arranged below the plug connector and on the left side and the right side of the wire, the bottoms of the left semicircular baffle and the right semicircular baffle are in contact extrusion with the top of the metal pipe, two plug blocks are fixed on the left side of the right semicircular baffle, two grooves are formed in the right side of the left semicircular baffle, two grooves are formed in the left side of the plug blocks in a penetrating mode and extend to the inside of the grooves, round holes are formed in one side of the plug blocks in a penetrating mode, the front side of the left semicircular baffle is in a sliding mode, the rear end of the plug rod penetrates through the left semicircular baffle, the grooves and the round holes and extends to the outside of the left semicircular baffle, two plug blocks are fixed on the front end of the plug connector, two plug blocks are connected with the bottom of the plug connector and the plug connector, and the plug connector extend to the inner surface of the plug connector.

Preferably, the bottom end of the wire penetrates through the vacuum arc-extinguishing chamber and extends to the inside of the vacuum arc-extinguishing chamber, and the bottom end of the wire is connected with a voltage detection device inside the vacuum arc-extinguishing chamber.

Preferably, a heat dissipation hole is formed in the top of the pressure equalizer, and a fan is arranged in the heat dissipation hole.

Preferably, the fan is electrically connected with an internal power supply of the pressure equalizer, and the front side and the rear side of the top of the heat dissipation hole are provided with mounting grooves.

Preferably, a dustproof net is arranged in the radiating hole, and magnetic attraction blocks are fixed on the front side and the rear side of the dustproof net.

Preferably, the bottoms of the two magnetic blocks penetrate through the mounting groove and extend to the inside of the mounting groove, and the outer surfaces of the two magnetic blocks are adsorbed to the inner surface of the mounting groove.

Preferably, the two magnetic attraction blocks are matched with the size of the mounting groove, and a display screen is arranged on one side of the pressure equalizer.

Preferably, the two trapezoidal inserting blocks are matched with the size of the slot, and the inclined planes of the two trapezoidal inserting blocks are in contact extrusion with the outer surface of the pressure equalizer.

Advantageous effects

The invention provides a voltage equalizing device which is added outside a common vacuum arc-extinguishing chamber. Compared with the prior art, the method has the following beneficial effects:

(1) This outside pressure equalizing device that increases at ordinary vacuum interrupter, through the inside with the pressure equalizer intubate installation cover, further make the bottom of installation cover and the inclined plane contact extrusion of trapezoidal inserted block, make two trapezoidal inserted blocks slide dorsad simultaneously, two trapezoidal inserted blocks begin extrusion compression first spring simultaneously, after the pressure equalizer slides to slot and trapezoidal inserted block butt joint, receive first spring elastic force effect, drive two trapezoidal inserted blocks and inject in the slot when first spring resets, thereby realize the installation of pressure equalizer, pulling two handles when dismantling, make the handle drive two slide bars slide dorsad, finally the slide bar drives trapezoidal inserted block roll-off slot, can pull out the pressure equalizer and realize dismantling, through quick joint mechanism's setting, the quick joint dismouting to the pressure equalizer has been realized, it installs fixedly to have avoided using a large amount of bolts, compared with traditional mounting means, this kind of dismouting mode easy operation does not need with the help of external tool, the dismouting is efficient.

(2) This at the outside pressure-equalizing device that increases of ordinary vacuum arc-extinguishing chamber for the pressure-equalizing device is through pushing down for the pressure-equalizing device drives the slide along the internal surface of installation cover and slides down, and simultaneously the slide begins extrusion compression second spring, and the slide is at gliding in-process downwards, finally makes the plug pass the slide, and finally inject the inside realization joint of interface, loosen the pressure-equalizing device, second spring drives slide and pressure-equalizing device and resets, simultaneously the pressure-equalizing device drives plug and wire and upwards moves, when the plug is pulled out to needs, take off the pressure-equalizing device earlier, pull out the plug can again, when the installation plug, earlier pass plug and wire metal pipe, further make plug and wire pass the top of slide follow installation cover and pull out, further place left semicircle baffle and right semicircle baffle and splice in the bottom of plug, make two plug inserts after the recess, further inject the plug into the inside of left semicircle baffle, and pass the round hole, realize the quick connection of left semicircle baffle and right semicircle baffle, through the setting up of automatic plug assembly, realized inserting the while inserting at the installation device, make plug and plug installation time have been saved, installation efficiency has been saved.

(3) This at the outside pressure-equalizing device that increases of ordinary vacuum arc-extinguishing chamber, through set up the fan in the inside of louvre, the setting of fan simultaneously can blow out the inside heat of pressure-equalizing device, has realized quick heat dissipation, and in addition through the magnetism inhale the piece with the dust screen adsorb in the inside of louvre, avoided external ash to enter into the pressure-equalizing device inside through the louvre, the dust screen is convenient to be torn down moreover and clear up, and the practicality is very strong.

Drawings

FIG. 1 is a perspective view of an external structure of the present invention;

FIG. 2 is an enlarged view of a portion of the invention at A in FIG. 1;

FIG. 3 is a cross-sectional view of a mounting sleeve of the present invention;

FIG. 4 is a diagram showing a trapezoid plug and slot separation state according to the present invention;

FIG. 5 is a partial structural perspective view of the present invention;

FIG. 6 is an exploded view of the automatic plugging assembly of the present invention;

fig. 7 is a state diagram showing the separation of the dust screen and the heat dissipation holes.

In the figure: the vacuum interrupter comprises a 1-vacuum interrupter, a 2-metal end cover, a 3-upper conducting rod, a 4-lower conducting rod, a 5-mounting sleeve, a 6-pressure equalizer, a 7-quick clamping mechanism, a 71-sliding rod, a 72-square groove, a 73-slot, a 74-handle, a 75-trapezoid inserting block, a 76-first spring, a 77-sliding plate, a 78-second spring, a 79-automatic inserting assembly, a 791-through hole, a 792-conducting wire, a 793-metal pipe, a 794-inserting head, a 795-left semicircular baffle, a 796-right semicircular baffle, a 797-inserting block, a 798-groove, a 799-round hole, a 7910-inserting rod, a 7911-fixing block, a 7912-inserting port, an 8-radiating hole, a 9-fan, a 10-mounting groove, a 11-dustproof net, a 12-magnetic suction block and a 13-display screen.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides a common vacuum interrupter outside pressure equalizing device that increases, including vacuum interrupter 1, vacuum interrupter 1's top and bottom all are provided with metal end cover 2, the top of top metal end cover 2 is provided with upper conductive rod 3, the bottom of upper conductive rod 3 runs through metal end cover 2 and extends to vacuum interrupter 1's inside, the bottom of below metal end cover 2 is provided with down conductive rod 4, upper conductive rod 3 and lower conductive rod 4 all are connected with external power source electricity, the top of down conductive rod 4 runs through metal end cover 2 and extends to vacuum interrupter 1's inside, vacuum interrupter 1's left side is fixed with installation cover 5, the inside of installation cover 5 is provided with equalizer 6, equalizer 6 is prior art, equalizer 6 can equalize vacuum interrupter 1 internal voltage, be provided with quick joint mechanism 7 between equalizer 6 and the installation cover 5; the quick clamping mechanism 7 comprises slide bars 71 which are connected to the front side and the rear side of the installation sleeve 5 in a sliding manner, square grooves 72 are formed in the front side and the rear side of the inner wall of the installation sleeve 5, opposite ends of the two slide bars 71 penetrate through the installation sleeve 5 and extend to the inside of the square grooves 72, inserting grooves 73 are formed in the front side and the rear side of the pressure equalizer 6, handles 74 are fixed to the ends, far away from the two slide bars 71, of the two slide bars 71, trapezoidal inserting blocks 75 are fixed to the opposite ends, penetrating through the inserting grooves 73 and extend to the inside of the inserting grooves 73, first springs 76 are sleeved on the outer surfaces of the two slide bars 71, the opposite ends of the two first springs 76 are fixedly connected with one side of the trapezoidal inserting blocks 75, one ends, far away from the two first springs 76, of the two first springs 76 are fixedly connected with the inner wall of the square grooves 72, sliding plates 77 are connected between the inner wall of the installation sleeve 5 in a sliding manner, the tops of the sliding plates 77 are pressed in contact with the bottoms of the pressure equalizer 6, second springs 78 are fixed between the bottoms of the sliding plates 77 and the inner wall of the installation sleeve 5, and automatic components 79 are arranged below the sliding plates 77; the automatic plugging assembly 79 comprises a through hole 791 penetrating the bottom of the installation sleeve 5, a wire 792 is arranged below the installation sleeve 5, a metal pipe 793 is fixed at the top of the inner wall of the installation sleeve 5, a plug 794 is fixed at the top of the wire 792, the top ends of the wire 792 and the plug 794 penetrate through the through hole 791 and the metal pipe 793 and extend to the top of the metal pipe 793, a left semicircular baffle 795 and a right semicircular baffle 796 are respectively arranged below the plug 794 and on the left side and the right side of the wire 792, the bottoms of the left semicircular baffle 795 and the right semicircular baffle 796 are in contact extrusion with the top of the metal pipe 793, two plugging blocks 797 are fixed on the left side of the right semicircular baffle 796, two grooves 798 are formed on the right side of the left semicircular baffle 795, the left sides of the two plugging blocks 797 penetrate through the grooves 798 and extend to the inside of the grooves 798, one sides of the two plugging blocks 797 penetrate through round holes 799, the front side of the left semicircular baffle 795 is slidingly connected with a plug rod 7910, the rear end of the plug rod 7910 penetrates through the left semicircular baffle 795, a groove 798 and a round hole 799 and extends to the outside of the left semicircular baffle 795, the front end of the plug rod 7910 is fixedly provided with a fixed block 7911, the bottom of the pressure equalizer 6 is provided with a plug interface 7912, the top end of the plug interface 794 penetrates through a sliding plate 77 and extends to the inside of the plug interface 7912, the outer surface of the plug interface 794 is clamped with the inner surface of the plug interface 7912, the bottom end of a wire 792 penetrates through the vacuum arc extinguishing chamber 1 and extends to the inside of the vacuum arc extinguishing chamber 1, the bottom end of the wire 792 is connected with a voltage detection device in the vacuum arc extinguishing chamber 1, the voltage detection device is in the prior art, when the voltage detection device detects that the voltage in the vacuum arc extinguishing chamber 1 is unbalanced, an instruction is sent to the pressure equalizer 6 for working, the pressure equalizing treatment is carried out in the vacuum arc extinguishing chamber 1, the top of the pressure equalizer 6 is provided with a heat dissipation hole 8, the inside of louvre 8 is provided with fan 9, fan 9 can blow away the inside heat of pressure-equalizing device 6, fan 9 and the inside power electric connection of pressure-equalizing device 6, mounting groove 10 has all been seted up to the front and back side at louvre 8 top, the inside of louvre 8 is provided with dust screen 11, dust screen 11 can avoid external dust to enter into the inside of pressure-equalizing device 6 through louvre 8, the front and back side of dust screen 11 all is fixed with the magnetic suction piece 12, the bottom of two magnetic suction piece 12 all runs through mounting groove 10 and extends to the inside of mounting groove 10, the surface of two magnetic suction piece 12 all adsorbs with the internal surface to mounting groove 10, the shell of pressure-equalizing device 6 adopts the metal material that can carry out the magnetism and inhale, two magnetic suction piece 12 all with the size looks adaptation of mounting groove 10, one side of pressure-equalizing device 6 is provided with display screen 13, two trapezoidal inserts 75 all with the size looks adaptation of slot 73, the inclined plane of two trapezoidal inserts 75 all with the surface contact extrusion of pressure-equalizing device 6.

And all that is not described in detail in this specification is well known to those skilled in the art.

When in operation, firstly the pressure equalizer 6 is inserted into the installation sleeve 5, the bottom of the installation sleeve 5 is further contacted and extruded with the inclined plane of the trapezoid inserting block 75, simultaneously the two trapezoid inserting blocks 75 slide back, simultaneously the two trapezoid inserting blocks 75 start to extrude and compress the first spring 76, when the pressure equalizer 6 slides to the slot 73 to be butted with the trapezoid inserting block 75, the first spring 76 is under the elastic force of the first spring 76, and simultaneously drives the two trapezoid inserting blocks 75 to be inserted into the slot 73, thereby realizing the installation of the pressure equalizer 6, when in disassembly, the two handles 74 are pulled, the handles 74 drive the two slide bars 71 to slide back, finally the slide bars 71 drive the trapezoid inserting blocks 75 to slide out of the slot 73, the pressure equalizer 6 can be pulled out for disassembly, the quick clamping and disassembly of the pressure equalizer 6 are realized through the arrangement of the quick clamping mechanism 7, the installation and fixation by using a large number of bolts are avoided, compared with the traditional installation mode, the installation mode has simple operation, no external tool is needed, the installation efficiency is high, the pressure equalizer 6 is pressed downwards, the pressure equalizer 6 drives the sliding plate 77 to slide downwards along the inner surface of the installation sleeve 5, meanwhile, the sliding plate 77 starts to compress the second spring 78 in a pressing way, the sliding plate 77 finally enables the plug 794 to pass through the sliding plate 77 in the downward sliding process and finally be inserted into the interior of the plug 7912 to realize clamping, the pressure equalizer 6 is loosened, the second spring 78 drives the sliding plate 77 and the pressure equalizer 6 to reset, meanwhile, the pressure equalizer 6 drives the plug 794 and the wire 792 to move upwards, when the plug 794 needs to be pulled out, the pressure equalizer 6 is firstly taken down, the plug 794 and the wire 792 pass through the metal tube 793, further the plug 794 and the wire 792 pass through the sliding plate 77 to be pulled out from the top of the installation sleeve 5 when the plug 794 is installed, further place left semicircle baffle 795 and right semicircle baffle 796 and splice in the bottom of grafting 794 for after two grafting pieces 7979 inject in recess 798, further inject the inside of left semicircle baffle 795 with the inserted bar 7910, and pass round hole 799, realize the quick connect of left semicircle baffle 795 and right semicircle baffle 796, through the setting of automatic grafting subassembly 79, realized when installing pressure equalizer 6, make grafting piece 794 inject in grafting mouth 7912, installation time and installation loaded down with trivial details degree have been saved, installation effectiveness has been promoted, through set up fan 9 in the inside of louvre 8, fan 9's setting simultaneously, can blow out the inside heat of pressure equalizer 6, realized quick heat dissipation, in addition, adsorb dust screen 11 in the inside of louvre 8 through magnet piece 12, it is inside to have avoided external ash to enter into pressure equalizer 6 through louvre 8, dust screen 11 conveniently tears down and clear up moreover, the practicality is very strong.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a vacuum interrupter with outside voltage-sharing device, includes vacuum interrupter (1), the top and the bottom of vacuum interrupter (1) all are provided with metal end cover (2), the top of metal end cover (2) is provided with conducting rod (3), the bottom of going up conducting rod (3) runs through metal end cover (2) and extends to the inside of vacuum interrupter (1), below the bottom of metal end cover (2) is provided with down conducting rod (4), the top of lower conducting rod (4) runs through metal end cover (2) and extends to the inside of vacuum interrupter (1), its characterized in that: the vacuum arc extinguishing chamber is characterized in that a mounting sleeve (5) is fixed on the left side of the vacuum arc extinguishing chamber (1), a pressure equalizer (6) is arranged in the mounting sleeve (5), and a quick clamping mechanism (7) is arranged between the pressure equalizer (6) and the mounting sleeve (5);

the quick clamping mechanism (7) comprises sliding rods (71) which are connected on the front side and the rear side of a mounting sleeve (5) in a sliding manner, square grooves (72) are formed in the front side and the rear side of the inner wall of the mounting sleeve (5), opposite ends of the sliding rods (71) penetrate through the mounting sleeve (5) and extend to the inside of the square grooves (72), inserting grooves (73) are formed in the front side and the rear side of a pressure equalizer (6), two ends, far away from each sliding rod (71), of the sliding rods (6) are respectively fixed with a handle (74), trapezoidal inserting blocks (75) are respectively fixed at the opposite ends of the sliding rods (71), the opposite sides of the trapezoidal inserting blocks (75) penetrate through the inserting grooves (73) and extend to the inside of the inserting grooves (73), first springs (76) are respectively sleeved on the outer surfaces of the sliding rods (71), the opposite ends of the first springs (76) are respectively fixedly connected with one sides of the trapezoidal inserting blocks (75), one ends of the first springs (76) are respectively far away from the square grooves (72), the inner walls (77) are respectively fixedly connected with the inner walls (5) of the bottom of the sliding sleeve (77), the sliding sleeve (5) is fixedly connected with the bottom of the sliding plate (77), the sliding plate (77) is fixedly arranged between the sliding plate (5), an automatic plug-in assembly (79) is arranged below the sliding plate (77);

automatic grafting subassembly (79) in including running through hole (791) of seting up in installation cover (5) bottom, the below of installation cover (5) is provided with wire (792), the bottom of installation cover (5) inner wall is fixed with tubular metal resonator (793), the top of wire (792) is fixed with bayonet joint (794), the top of wire (792) and bayonet joint (794) runs through hole (791) and tubular metal resonator (793) and extends to tubular metal resonator (793)'s top, the below of bayonet joint (794) and the left and right sides that is located wire (792) are provided with left semicircle baffle (795) and right semicircle baffle (796) respectively, the bottom of left semicircle baffle (795) and right semicircle baffle (796) and tubular metal resonator's top contact extrusion, the left side of right semicircle baffle (796) is fixed with two grafting pieces (797), the right side of left semicircle baffle (795) has seted up two recess (798) and has been seted up on the right side of left semicircle baffle (793) and has the top of two semicircle baffle (798), the left semicircle baffle (798) and the left side of extending to the inside of rod (798) is connected with (796), the end that the front end of extending to the rod (798) is followed by the extension of rod (798) The groove (798) and the round hole (799) extend to the outside of left semicircle baffle (795), the front end of inserted bar (7910) is fixed with fixed block (7911), interface (7912) have been seted up to the bottom of pressure equalizer (6), the top of plug (794) runs through slide (77) and extends to the inside of interface (7912), the surface and the interior surface joint of interface (7912) of plug (794).

2. A vacuum interrupter with external pressure equalizing device according to claim 1, wherein: the bottom of wire (792) runs through vacuum interrupter (1) and extends to the inside of vacuum interrupter (1), the bottom of wire (792) is connected with the inside voltage detection device of vacuum interrupter (1).

3. A vacuum interrupter with external pressure equalizing device according to claim 1, wherein: the top of the pressure equalizer (6) is provided with a heat dissipation hole (8), and a fan (9) is arranged in the heat dissipation hole (8).

4. A vacuum interrupter with external pressure equalizing device according to claim 3, wherein: the fan (9) is electrically connected with an internal power supply of the pressure equalizer (6), and mounting grooves (10) are formed in the front side and the rear side of the top of the radiating hole (8).

5. A vacuum interrupter with external pressure equalizing device according to claim 3, wherein: the inside of louvre (8) is provided with dust screen (11), the front and back side of dust screen (11) all is fixed with magnetism and inhales piece (12).

6. A vacuum interrupter with external pressure equalizing device according to claim 5, wherein: the bottoms of the two magnetic blocks (12) penetrate through the mounting groove (10) and extend into the mounting groove (10), and the outer surfaces of the two magnetic blocks (12) are adsorbed to the inner surface of the mounting groove (10).

7. A vacuum interrupter with external pressure equalizing device according to claim 5, wherein: the two magnetic attraction blocks (12) are matched with the size of the installation groove (10), and a display screen (13) is arranged on one side of the pressure equalizer (6).

8. A vacuum interrupter with external pressure equalizing device according to claim 1, wherein: the two trapezoidal inserting blocks (75) are matched with the size of the slot (73), and the inclined planes of the two trapezoidal inserting blocks (75) are in contact extrusion with the outer surface of the pressure equalizer (6).