CN208622650U - A kind of vacuum pole with ventilating duct - Google Patents

Abstract

The utility model relates to the vacuum poles with ventilating duct to realize and penetrate through inside vacuum pole with external gas circuit by the way that ventilation hole is arranged in the bottom end of vacuum pole；Meanwhile the outside wall surface of vacuum pole sets ventilation duct, ventilation duct is conducted in the accommodating cavity of outer housing lower part, and then the ventilation hole, accommodating cavity and ventilation duct is made to cooperatively form a ventilating duct；Gas comes in be formed a convection current for passing through vacuum pole from circuit breakers pole column bottom, efficiently realizes heat loss through conduction.

Description

A kind of vacuum pole with ventilating duct

Technical field

The utility model relates to indoor high-voltage vacuum poles, and in particular to a kind of vacuum pole with ventilating duct of heat loss through convection Column.

Background technique

The connection of almost all of high-voltage switch cubicle handcart contact utilizes copper bar.But metallic copper not only has good Electric conductivity, with more outstanding heating conduction.

The heat that high-tension switch cabinet is formed in working condition can be such that copper bar quickly heats, and it is right inside high-tension switch cabinet to cause The switching performance of contact is answered to be severely impacted.Once fever accident occurs in high-voltage switch cubicle handcart contact, such as height is pressed off Cabinet with carrying out comprehensive system not only cumbersome when overhauling and safeguarding is closed, but also relatively difficult.It is handled even across repair and maintenance, The electric property of switch also substantially cannot completely be restored.

High-tension switch cabinet contact surface temperature in bad working environment or when itself there are abnormal conditions increases, The continuous action of current heating effect can promote contact temperature to be gradually increased simultaneously.Once this temperature raising trend is too fast, cause Contact temperature is set to be higher than the specified heat-resistant standard of high-tension switch cabinet internal current mutual inductor or the heat-resisting mark higher than insulating sleeve Standard will lead to the damage of current transformer and insulating sleeve, cause single-phase or two alternate short circuits, finally make fever event The destructive power of barrier is amplified, and feeds through to other auxiliary devices, the stability of final power supply-distribution system or power transformer by It influences, or even fire occurs, or even explosion.

However, the problem high for high-tension switch cabinet operating temperature, existing numerous component producers only simply exist Breaker rated current >=2500A, pole top increase heat dissipating housing.In the case where no change circuit breaker polar mechanism, break After road device is mounted in middle-placed switch cabinet cabinet, the convection current of air receives corresponding limitation.Cooling effect is limited, not can guarantee temperature control effect Fruit.

Summary of the invention

The utility model is intended to provide a kind of vacuum pole with ventilating duct, to solve existing vacuum pole, can not carry out Cross-ventilation, cool down difficult problem.

Concrete scheme is as follows: a kind of vacuum pole with ventilating duct, including outer housing, is equipped with up and down in the outer housing true Empty arc-chutes and accommodating cavity；The upper end of the outer housing is embedded with connecting copper bar, is also embedded on the side wall of the accommodating cavity There is lower connecting copper bar；

The ventilation duct of about one extension is additionally provided in the outside wall surface of the outer housing, which is conducted to accommodating sky Intracavitary, the bottom of the accommodating cavity is equipped with the ventilation hole with outside perforation, and then makes the ventilation hole, accommodating cavity and ventilation duct Cooperatively form a ventilating duct.

The further technical solution of the utility model are as follows: the ventilation duct is the closed conduct of upper end opening, the outer housing Side wall surface is equipped with the through hole for being conducted to the ventilation duct lower end, and then is conducted to the ventilation duct lower end in the accommodating cavity.

The further technical solution of the utility model are as follows: the ventilation duct is integrally formed the square tube on the outer housing, should The top of the upper end of ventilation duct and sidewall areas away from outer housing side are equipped with opening, and then form the upper of the ventilation duct End opening.

The further technical solution of the utility model are as follows: the through hole is set to the area of the opposite lower connecting copper bar installation site Domain.

The further technical solution of the utility model are as follows: the through hole is set to the position of the accommodating cavity central region.

The further technical solution of the utility model are as follows: the lower end wall surface of the outer housing is equipped with ripple end, the outer housing Top correspond to the region of connecting copper bar on this and be additionally provided with a heat dissipating housing.

The utility model has the advantages that the vacuum pole with ventilating duct of the utility model, logical by being arranged in the bottom end of vacuum pole Air holes is realized and is penetrated through inside vacuum pole with external gas circuit；Meanwhile the outside wall surface of vacuum pole sets ventilation duct, ventilation duct It is conducted in the accommodating cavity of outer housing lower part, and then the ventilation hole, accommodating cavity and ventilation duct is made to cooperatively form a ventilation Road；Gas comes in be formed a convection current for passing through vacuum pole from circuit breakers pole column bottom, efficiently realizes heat loss through conduction.

Detailed description of the invention

Fig. 1 shows vacuum pole side view of the utility model with ventilating duct；

Fig. 2 shows Fig. 1 vacuum pole cross-sectional views.

Specific embodiment

To further illustrate each embodiment, the utility model is provided with attached drawing.These attached drawings are in the utility model discloses A part of appearance mainly to illustrate embodiment, and can cooperate the associated description of specification former come the running for explaining embodiment Reason.Cooperation refers to these contents, and those of ordinary skill in the art will be understood that other possible embodiments and sheet are practical new The advantages of type.Component in figure is not necessarily to scale, and similar component symbol is conventionally used to indicate similar component.

Now in conjunction with the drawings and specific embodiments, the present invention will be further described.

Referring to figs. 1 and 2, this embodiment offers a kind of vacuum pole with ventilating duct a comprising asphalt mixtures modified by epoxy resin The outer housing 3 of rouge material, the outer housing 3 are hollow settings, are equipped with vacuum interrupter 30 in outer housing 3 up and down and for pacifying Fill the accommodating cavity 301 of switching-on mechanism 36；The upper end of the outer housing 3 is embedded with connecting copper bar 34, the side of the accommodating cavity 301 On wall surface, it is embedded with lower connecting copper bar 35, which accesses inside the accommodating cavity 301.

The outside wall surface of the outer housing 3 deviates from incoming end side, the ventilation duct 33 of about one extension is additionally provided with, in the reality It applies in example, which is shaped on the outer housing 3, which is conducted in the accommodating cavity, Its concrete mode are as follows:

The ventilation duct 33 is the closed conduct of upper end opening, and the side wall surface of the outer housing 3, which is equipped with, is conducted to the ventilation duct The through hole 332 of lower end, and then it is conducted to 33 lower end of ventilation duct in the accommodating cavity.

To realize convection effects, accommodating 301 upper area of cavity is set also to generate convection current, which is set to the accommodating The problem of position of 301 central region of cavity, avoids lower part inflow stream, directly flows out via ventilation duct 33；Meanwhile this is passed through Through-hole 332 is set to the region of opposite lower 5 installation site of contact arm, even if ventilation duct 33 and lower contact arm 5 are respectively arranged on the outer housing 3 Two sides, heat loss through convection effect is more preferable.

The ventilation duct 33 is integrally formed in the square tube (section is rectangle) on the outer housing 3, to realize that top is most preferably fallen Wandering thermal effect, the top of the upper end of the ventilation duct 33 and the sidewall areas away from outer housing side are equipped with opening, in turn Form the upper end opening 330 of the ventilation duct 33；Meanwhile the lower end area of the ventilation duct 33, pass through lower end wall face closure through hole 332, to form a closing wall surface 331, the region of the through hole 332 is covered, realizes the double-deck (outer housing 3 in 332 region of through hole Wall surface and closing wall surface 331) isolation effect.

The bottom of the accommodating cavity 301 is equipped with the ventilation hole 302 of perforation, which is connected to outside, and then keeps this logical Air holes 302, accommodating cavity 301 and ventilation duct 33 cooperatively form a ventilating duct, realize gaseous exchange, take away in vacuum pole The technical effect of hot-air.

In this embodiment, the lower end wall surface of the outer housing 3 is equipped with ripple end, and in conjunction with convection current, heat dissipation effect is more It is good；The top of the outer housing 3 is also provided with a heat dissipating housing, to realize the heat dissipation of usual manner；Certainly, it is also wrapped in the embodiment Radio temperature sensor (not shown) is included, which is sheathed on this in connecting copper bar 34, that is, can measure Real time temperature.

Although specifically showing and describing the utility model in conjunction with preferred embodiment, those skilled in the art is answered This is understood, in the spirit and scope for not departing from the utility model defined by the appended claims, in form and details On the utility model can be made a variety of changes, be the protection scope of the utility model.

Claims (6)

1. a kind of vacuum pole with ventilating duct, it is characterised in that: including outer housing, go out up and down equipped with vacuum in the outer housing Arc chamber and accommodating cavity；The upper end of the outer housing is embedded with connecting copper bar, is also embedded with down on the side wall of the accommodating cavity Connecting copper bar；

The ventilation duct of about one extension is additionally provided in the outside wall surface of the outer housing, which is conducted to the accommodating cavity Interior, the bottom of the accommodating cavity is equipped with the ventilation hole with outside perforation, and then matches the ventilation hole, accommodating cavity and ventilation duct It closes and forms a ventilating duct.

2. the vacuum pole according to claim 1 with ventilating duct, it is characterised in that: the ventilation duct is the envelope of upper end opening Stopped pipe road, the side wall surface of the outer housing is equipped with the through hole for being conducted to the ventilation duct lower end, and then leads the ventilation duct lower end It passes in the accommodating cavity.

3. the vacuum pole according to claim 2 with ventilating duct, it is characterised in that: the ventilation duct is integrally formed in this Square tube on outer housing, the top of the upper end of the ventilation duct and the sidewall areas away from outer housing side are equipped with opening, into And form the upper end opening of the ventilation duct.

4. the vacuum pole according to claim 2 with ventilating duct, it is characterised in that: the through hole, which is set to, opposite to be connected under this Connect the region of copper installation position.

5. the vacuum pole according to claim 2 with ventilating duct, it is characterised in that: the through hole is set to the accommodating cavity The position of central region.

6. the vacuum pole according to claim 1 with ventilating duct, it is characterised in that: set on the lower end wall surface of the outer housing There is ripple end, the region that the top of the outer housing corresponds to connecting copper bar on this is additionally provided with a heat dissipating housing.