CN214848344U

CN214848344U - Buffer device of outdoor high-voltage alternating-current vacuum circuit breaker

Info

Publication number: CN214848344U
Application number: CN202120586962.5U
Authority: CN
Inventors: 黄山; 王立广
Original assignee: People Electrical Appliance Group Shanghai Co Ltd
Current assignee: People Electrical Appliance Group Shanghai Co Ltd
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2021-11-23
Anticipated expiration: 2031-03-23

Abstract

The utility model discloses an outdoor high pressure alternating current vacuum circuit breaker's buffer, including protective housing, buffer and connecting seat, the inside fixed mounting of protective housing has the mount pad, the all fixed mounting in top of mount pad has spring assembly, and all fixed mounting has the buffer between the spring assembly at mount pad top, the all fixed mounting in bottom of mount pad has the shock attenuation post, and the periphery of shock attenuation post all is provided with the damping ring, mounting bracket fixed mounting has the fan at the top of protective housing, the protective housing top of fan bottom is provided with the wind gap, the surface of protective housing both sides all is provided with the louvre. The utility model discloses when the circuit breaker separating brake finishes, can absorb spring assembly's residual energy through shock attenuation post and shock-absorbing ring, protection mechanism avoids receiving too big impact, reduces the separating brake bullet and shakes, can make separating brake curve process comparatively mild simultaneously, optimizes the use, practicality very.

Description

Buffer device of outdoor high-voltage alternating-current vacuum circuit breaker

Technical Field

The utility model relates to a vacuum circuit breaker technical field specifically is an outdoor high pressure alternating current vacuum circuit breaker's buffer.

Background

Vacuum circuit breaker is famous because the insulating medium in its arc extinguishing medium and arc extinguishing back contact clearance all is the high vacuum, and it has small, light in weight, is applicable to frequent operation, the advantage that the arc extinguishing need not be overhauld, uses comparatively popularizedly in the distribution network, can produce impact energy when vacuum circuit breaker separating brake finishes, in order to avoid impact energy to cause the device to damage, need increase buffer gear for vacuum circuit breaker.

The existing outdoor high-voltage alternating-current vacuum circuit breaker has the following defects:

1. the existing outdoor high-voltage alternating-current vacuum circuit breaker is not provided with a buffer mechanism, so that the device is easily damaged by impact energy generated when the switching-off is finished;

2. the protection effect and the radiating effect of the existing outdoor high-voltage alternating-current vacuum circuit breaker are poor, and damage caused by overheating is easy to occur.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an outdoor high voltage alternating current vacuum circuit breaker's buffer to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an outdoor high pressure alternating current vacuum circuit breaker's buffer, includes protecting box, buffer and connecting seat, the inside fixed mounting of protecting box has the mount pad, the top of mount pad is fixed mounting all has spring assembly, and all fixed mounting has the buffer between the spring assembly at mount pad top, the bottom of mount pad is fixed mounting all has the shock-absorbing post, and the periphery of shock-absorbing post all is provided with the shock attenuation ring, mounting bracket fixed mounting has the fan through the top of protecting box, the protecting box top of fan bottom is provided with the wind gap, the surface of protecting box both sides all is provided with the louvre, the surface of protecting box is provided with the chamber door.

Preferably, a nameplate is fixedly mounted at the top of the surface of the box door, and a bolt is fixedly mounted between the nameplate and the box door.

Preferably, a handle is fixedly arranged on one side of the surface of the box door, and a rubber sleeve is arranged on the periphery of the handle.

Preferably, the bottom of the protective box is fixedly provided with a connecting seat, and the connecting seats on two sides of the protective box are movably provided with connecting bolts.

Preferably, the installation rods are fixedly installed at the tops of the protection boxes on the two sides of the installation rack, and the protection plates are fixedly installed at the tops of the installation rods.

Preferably, all fixed mounting has the fixing base between the bottom of shock attenuation post and the guard box, and the fixing base of shock attenuation post both sides is inside all fixed mounting has the gim peg.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a all fixed mounting have the buffer between the spring unit at mount pad top, when the head that is hit receives huge pressure, pressure is transferred to the piston by chock plug and accelerating spring, the piston is then the hydraulic oil in the extrusion inner tube, hydraulic oil gets into the space between the inner and outer wall through the oil drain hole, then partly through empty entering inner tube of oil return, another part flows to the pressure storage sponge, when the piston begins to move, because the annular clearance between with the ejector pin is great, the fluid is easily extruded, but along with the piston continues the motion, this annular clearance gets littleer and littleer, make the piston resistance increase constantly, after the cylindrical stage of ejector pin, the resistance will reach the maximum value, when the impact force stops, the piston is pushed to the primary position by reset spring, prepare to accept next impact force, this is exactly to accomplish a duty cycle, thereby accomplish the work of buffering, the bottom of mount pad is all fixed mounting has the shock-absorbing post, when the circuit breaker separating brake was ended, can absorb spring unit's residual energy through shock-absorbing post and shock-absorbing ring, and protection machanism avoids receiving too big impact, reduces the separating brake bullet and shakes, can make separating brake curve process comparatively mild simultaneously, unusual practicality.

2. The utility model discloses a there is the fan at the top of protective housing through mounting bracket fixed mounting, the protective housing top of fan bottom is provided with the wind gap, can provide the protection for the device through the protective housing, increase the security of device, the in-process of circuit breaker work, inside flabellum is rotatory after the fan circular telegram, can produce wind-force through the flabellum is rotatory, wind-force blows to the wind gap and gets into in the protective housing, can carry out the refrigerated work of dispelling the heat to spring assembly through wind-force, and wind-force can pass through the louvre with the heat that spring assembly gived off and discharge, thereby accomplish the work of heat dissipation cooling, avoid the overheated damage that leads to of spring assembly, the optimal use process, unusual practicality.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a schematic view of a partial structure of the shock-absorbing column of the present invention;

fig. 4 is a schematic view of a local structure of the fan of the present invention.

In the figure: 1. a protection plate; 2. mounting a rod; 3. a protective box; 4. a spring assembly; 5. a buffer; 6. a mounting seat; 7. a shock-absorbing post; 8. a connecting seat; 9. a mounting frame; 10. a fan; 11. heat dissipation holes; 12. a connecting bolt; 13. a box door; 14. a nameplate; 15. a grip; 16. a shock-absorbing ring; 17. a fixed seat; 18. and (4) a tuyere.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides an embodiment: a buffer device of an outdoor high-voltage alternating-current vacuum circuit breaker comprises a protective box 3, a buffer 5 and a connecting seat 8, wherein a mounting seat 6 is fixedly arranged in the protective box 3, spring assemblies 4 are fixedly arranged at the tops of the mounting seats 6, the model of the spring assemblies 4 adopts an LW25-126 high-voltage circuit breaker, the buffer 5 is fixedly arranged between the spring assemblies 4 at the tops of the mounting seats 6, the model of the buffer 5 adopts an MA3350M circuit breaker buffer, the buffer 5 comprises a collision head, a piston rod, an oil seal, an inner pipe, an outer pipe, an oil seal, a pressure-accumulating sponge, a spring, a piston, hydraulic oil and the like, when the collision head is subjected to huge pressure, the pressure is transferred to the piston by a plug head and an accelerating spring, the piston extrudes the hydraulic oil in the inner pipe, the hydraulic oil enters a gap between the inner wall and the outer wall through an oil discharge hole, then a part of the hydraulic oil enters the inner pipe through an oil return hole, and the other part of the hydraulic oil flows to the pressure-accumulating sponge, when the piston starts to move, because the annular gap between the piston and the ejector rod is larger, oil is easy to extrude, but the annular gap becomes smaller and smaller along with the continuous movement of the piston, the resistance of the piston is continuously increased, the resistance reaches the maximum value after the cylindrical stage of the ejector rod, when the impact force stops, a return spring is arranged in the working cavity of the buffer 5, the piston is pushed to the original position by the return spring to be ready to receive the next impact force, so that a working cycle is completed, the buffering work is completed, the use process is optimized, the shock absorption column 7 is fixedly arranged at the bottom of the mounting seat 6, the shock absorption rings 16 are arranged at the periphery of the shock absorption column 7, when the circuit breaker is opened, the residual energy of the spring assembly 4 can be absorbed through the shock absorption column 7 and the shock absorption rings 16, and the protection mechanism avoids too large impact, the brake separating bounce is reduced, the brake separating curve process is relatively smooth, the damping columns 7 and the damping rings 16 are made of spring steel with the best quality, the service life is very long, the double advantages of low frequency and large damping are achieved, the inherent resonance amplitude phenomenon of a common spring is eliminated, the use process is optimized, the protective box is very practical, a fan 10 is fixedly installed at the top of the protective box 3 through a mounting frame 9, an air opening 18 is formed in the top of the protective box 3 at the bottom of the fan 10, radiating holes 11 are formed in the surfaces of the two sides of the protective box 3, in the working process of the circuit breaker, the fan 10 rotates through the blades inside after being electrified, wind power can be generated through the rotation of the blades, the wind power blows towards the air opening 18 to enter the protective box 3, the radiating holes can be used for cooling the spring assembly 4 through the wind power, and heat emitted by the spring assembly 4 can be discharged through the radiating holes 11 through the wind power, thereby accomplish the work of heat dissipation cooling, avoid the overheated damage that leads to of spring unit 4, optimize the use, practicality very, the surface of protective housing 3 is provided with chamber door 13, can open chamber door 13 through handle 15 and make things convenient for the staff to overhaul.

Further, the top fixed mounting on chamber door 13 surface has data plate 14, can make things convenient for the staff to look over the model and the specification of device through data plate 14, and fixed mounting has the bolt between data plate 14 and chamber door 13, can install data plate 14 on chamber door 13 through the bolt, increases data plate 14's stability.

Further, a handle 15 is fixedly mounted on one side of the surface of the box door 13, the box door 13 can be opened through the handle 15, so that a worker can conveniently overhaul the box door, a rubber sleeve is arranged on the periphery of the handle 15, and the friction force between the handle 15 and the palm of the worker can be increased through the rubber sleeve, so that the phenomenon of slipping is avoided.

Further, the bottom fixed mounting of protective housing 3 has connecting seat 8, can make things convenient for the staff to install protective housing 3 through connecting seat 8, and the inside all movable mounting of connecting seat 8 of protective housing 3 both sides has connecting bolt 12, through the stability of connecting bolt 12 multiplicable connecting seat 8 installations.

Further, all fixed mounting have installation pole 2 at the 3 tops of guard box of mounting bracket 9 both sides, and the top fixed mounting of installation pole 2 has guard plate 1, can install guard plate 1 on guard box 3 through installation pole 2, increases guard plate 1's stability, can provide the protection for guard box 3 through guard plate 1.

Further, all fixed mounting have fixing base 17 between the bottom of shock attenuation post 7 and the protective housing 3, can install shock attenuation post 7 on protective housing 3 through fixing base 17, increase the stability of shock attenuation post 7, and the inside all fixed mounting of fixing base 17 of shock attenuation post 7 both sides has the gim peg, through the stability of the multiplicable fixing base 17 of gim peg.

The working principle is as follows: when the collided head is under huge pressure, the pressure is transferred to the piston by the plug head and the accelerating spring, the piston extrudes hydraulic oil in the inner pipe, the hydraulic oil enters a gap between the inner wall and the outer wall through the oil discharge hole, then one part of the hydraulic oil enters the inner pipe through the oil return hole, and the other part of the hydraulic oil flows to the pressure accumulation sponge, can absorb spring assembly 4's residual energy through shock attenuation post 7 and shock attenuation ring 16, protection machanism avoids receiving too big impact, reduce the separating brake vibration, can make separating brake curve process comparatively mild simultaneously, fan 10 circular telegram back inside flabellum rotates, can produce wind-force through the flabellum rotation, wind-force blows to in tuyere 18 gets into protective housing 3, can carry out heat dissipation refrigerated work to spring assembly 4 through wind-force, and wind-force can pass through louvre 11 with the heat that spring assembly 4 gived off and discharge, thereby accomplish the work of heat dissipation cooling, avoid the overheated damage that leads to of spring assembly 4, unusual practicality.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an outdoor high voltage AC vacuum circuit breaker's buffer, includes protective housing (3), buffer (5) and connecting seat (8), its characterized in that: the utility model discloses a damping device for the automobile, including protective housing, spring assembly (7), buffer, mounting bracket (9), fan (10), protective housing (3) and door (13), the inside fixed mounting of protective housing (3) has mount pad (6), the top of mount pad (6) all fixed mounting have spring assembly (4), and all fixed mounting have buffer (5) between spring assembly (4) at mount pad (6) top, the bottom of mount pad (6) all fixed mounting have shock-absorbing column (7), and the periphery of shock-absorbing column (7) all is provided with damping ring (16), mounting bracket (9) fixed mounting has fan (10) at the top of protective housing (3), protective housing (3) top of fan (10) bottom is provided with wind gap (18), the surface of protective housing (3) both sides all is provided with louvre (11), the surface of protective housing (3) is provided with chamber door (13).

2. The snubber assembly of an outdoor high voltage ac vacuum circuit breaker according to claim 1, wherein: a nameplate (14) is fixedly mounted at the top of the surface of the box door (13), and a bolt is fixedly mounted between the nameplate (14) and the box door (13).

3. The snubber assembly of an outdoor high voltage ac vacuum circuit breaker according to claim 1, wherein: a grip (15) is fixedly arranged on one side of the surface of the box door (13), and a rubber sleeve is arranged on the periphery of the grip (15).

4. The snubber assembly of an outdoor high voltage ac vacuum circuit breaker according to claim 1, wherein: the bottom of protective housing (3) is fixed with connecting seat (8), and connecting bolt (12) are all movably mounted inside connecting seat (8) of protective housing (3) both sides.

5. The snubber assembly of an outdoor high voltage ac vacuum circuit breaker according to claim 1, wherein: the protection box (3) top of mounting bracket (9) both sides all fixed mounting have installation pole (2), and the top fixed mounting of installation pole (2) has guard plate (1).

6. The snubber assembly of an outdoor high voltage ac vacuum circuit breaker according to claim 1, wherein: all fixed mounting has fixing base (17) between the bottom of shock attenuation post (7) and guard box (3), and inside all fixed mounting of fixing base (17) of shock attenuation post (7) both sides has the gim peg.