CN214203545U

CN214203545U - Closed isolating switch

Info

Publication number: CN214203545U
Application number: CN202120329873.2U
Authority: CN
Inventors: 陈石川; 吴建宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-09-14
Anticipated expiration: 2031-02-05

Abstract

The utility model provides a closed isolator, including transparent insulation support, be located last conductive terminal of insulation support upper end and be located the lower conductive terminal of insulation support lower extreme, insulation support inside is provided with the moving contact that can follow insulation support length direction and remove, moving contact top, lower extreme all have the contact, and the contact that is located the moving contact top communicates with last conductive terminal contact, is located the contact and the lower conductive terminal contact intercommunication of moving contact lower extreme, goes up conductive terminal, lower conductive terminal, insulation support and moving contact constitution enclosure space for reduce the influence of environment to the switch. The utility model discloses simple structure, reasonable in design, convenient operation, simple structure, it is with low costs, the position state of convenient observation switch need not to maintain the adjustment in the life cycle, and effectively solves the power failure trouble that traditional isolation switch mechanism bite, contact generated heat and caused, has practical value.

Description

Closed isolating switch

Technical Field

The utility model relates to a closed isolator.

Background

The distribution network overhead line transmits electric energy to a terminal user, the isolating switch is widely applied to the line, and the isolating switch is widely adopted at the positions of a section and a branch point of the line, a connecting point of the overhead line and a cable line, lines on two sides of a pole-mounted circuit breaker and the like, is used as an obvious disconnection point, and plays an indispensable role in the safety management of the distribution network. At present, the traditional isolation disconnecting link applied to the overhead line of the distribution network adopts a spring pressing and mechanical clamping mode to maintain an opening and closing state, and has more spare parts; during operation, a worker aligns to the position and can switch on the switch in place only by pushing the switch forcefully; after the operation for a period of time, the contact part is corroded, stuck or loosened under the influence of the environment, so that the power failure and power transmission frequently occur; the spring compresses tightly and causes the damage of the surface coatings of the moving contact and the static contact, and then causes the switch to be burnt out by heating, and the fatigue of the spring easily causes the bad contact of the moving contact and the static contact, and also easily causes the switch to be burnt out by heating.

SUMMERY OF THE UTILITY MODEL

The utility model discloses improve above-mentioned problem, promptly the to-be-solved technical problem of the utility model is to provide a closed isolator, convenient operation and working effect are good.

The utility model discloses a constitute like this, it includes transparent insulation support, is located last conductive terminal of insulation support upper end and is located the lower conductive terminal of insulation support lower extreme, insulation support inside is provided with the moving contact that can follow insulation support length direction and remove, moving contact top, lower extreme all have the contact, and the contact that is located the moving contact top communicates with last conductive terminal contact, is located the contact and the lower conductive terminal contact intercommunication of moving contact lower extreme, goes up conductive terminal, lower conductive terminal, insulation support and moving contact constitution enclosure space for reduce the influence of environment to the switch.

Furthermore, a gasket is arranged inside the lower conductive terminal, a slot is formed in the inner ring of the gasket, and a clamping point for penetrating through the slot is arranged on the outer side of the moving contact and used for enabling the clamping point of the moving contact to abut against and be fixed on the upper surface of the non-slot position of the gasket.

Furthermore, the contact is of a contact finger structure, and the contact finger structure is formed by surrounding a plurality of contact pieces; the contact piece is an elastic body and ensures good contact with the inner walls of the upper conductive terminal and the lower conductive terminal.

Furthermore, the lower end of the moving contact is provided with an operation pull ring.

Furthermore, the middle part of the insulating sleeve is provided with a fixing fitting, and the fixing fitting is provided with a mounting hole.

Furthermore, a plurality of umbrella skirt structures are arranged outside the insulating sleeve at intervals from top to bottom.

Furthermore, the upper conductive terminal comprises an upper conductor and an upper wiring terminal, an avoiding groove for avoiding the moving contact is arranged below the upper conductor, the lower conductive terminal comprises a lower conductor and a lower wiring terminal, and a hole for penetrating through the moving contact is formed in the middle of the lower conductor.

Compared with the prior art, the utility model discloses following beneficial effect has: the device has the advantages of reasonable design, simple structure, convenient operation, small maintenance workload, effective reduction of engineering cost, great reduction of power failure faults caused by reasons such as jamming of the isolation switch mechanism, heating of the contact and the like, and effective improvement of power supply reliability.

Drawings

Fig. 1 is a perspective view of the embodiment of the present invention in a closed state;

fig. 2 is an internal cross-sectional view of the embodiment of the present invention in a closed state;

fig. 3 is a front view of the embodiment of the present invention in an open state;

fig. 4 is an internal cross-sectional view of the embodiment of the present invention in an open state;

fig. 5 is a schematic structural view of a moving contact in an embodiment of the present invention;

in the figure: 1-insulating sleeve, 11-umbrella skirt structure, 2-upper conductive terminal, 21-upper conductor, 22-upper connecting terminal, 23-avoidance groove, 3-lower conductive terminal, 31-lower conductor, 32-lower connecting terminal, 33-hole, 4-movable contact, 41-contact, 42-clamping point, 43-contact, 5-gasket, 51-groove, 6-operation pull ring, 61-connecting plate, 62-rivet and 7-fixed hardware fitting.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example (b): as shown in fig. 1 to 5, in the present embodiment, a closed type disconnecting switch is provided, which includes a transparent insulating sleeve 1, an upper conductive terminal 2 located at an upper end of the insulating sleeve, and a lower conductive terminal 3 located at a lower end of the insulating sleeve, a movable contact 4 capable of moving along a length direction of the insulating sleeve is disposed inside the insulating sleeve, contacts 41 are disposed at a top end and a lower end of the movable contact, a contact located at a top end of the movable contact is in contact communication with the upper conductive terminal, and a contact located at a lower end of the movable contact is in contact communication with the lower conductive terminal; when the switch is in a closed state, the upper conductive terminal, the lower conductive terminal, the insulating sleeve and the moving contact form a closed space together, so that the influence of the environment on the switch is reduced.

The insulating sleeve is transparent, and when the moving contact is in a closed state or an open circuit state, the position of the moving contact in the insulating sleeve can be observed by naked eyes.

The upper conductive terminal and the lower conductive terminal have elasticity and are used for forming an electric connection loop with a power grid system and forming a closed or open circuit state of a switch with the moving contact.

The moving contact is made of a material with good electrical conductivity, and two contacts on the moving contact can be respectively in good electrical contact with the upper conductive terminal and the lower conductive terminal.

In this embodiment, a gasket 5 is disposed inside the lower conductive terminal, two slots 51 are disposed on an inner ring of the gasket, and two fastening points 42 for passing through the slots are disposed on an outer side of the movable contact, so as to fasten the fastening points of the movable contact against an upper surface of the gasket at a non-slot position.

In the present embodiment, the contact is designed as a contact finger structure, and the contact finger structure is surrounded by a plurality of contact pieces 43; the diameters of the upper part and the lower part of the cylinder surrounded by the arc-shaped touch are smaller than the diameter of the middle part of the cylinder.

The section of the contact finger structure is circular; the arrangement of the contact finger structure can increase the conductive performance and the heat dissipation performance; in addition, it should be noted that the contact finger structure may also be disposed inside the upper conductive terminal and the lower conductive terminal.

In this embodiment, in order to facilitate opening and closing of the moving contact, an operation pull ring 6 is arranged at the lower end of the moving contact, a connecting plate 61 is fixed above the operation pull ring, the connecting plate penetrates through the middle of the lower end of the moving contact and enters the inside of the moving contact, and the connecting plate is fixed with the moving contact by a rivet 62.

In this embodiment, a fixing hardware 7 is arranged in the middle of the insulating sleeve, and the fixing hardware is provided with a mounting hole; the switch can be fixed on a power tower component, has enough bending resistance and torsion resistance, and meets the stability of switch operation.

The fixing hardware fitting can be made of aluminum alloy or other non-ferromagnetic materials, and is matched with the nut and the flexible gasket to clamp and fix the insulating sleeve.

In the embodiment, the inside of the insulating sleeve is a cavity; according to different voltage class designs, a plurality of umbrella skirt structures 11 are arranged on the outer portion of the insulating sleeve at intervals from top to bottom, the umbrella skirt structures can be annular bodies, and the umbrella skirt structures and the insulating sleeve can be integrated;

the umbrella skirt structure and the insulating sleeve can be made of glass or composite insulating materials with good insulating property, corrosion resistance, sunlight irradiation resistance and transparency, and the insulating sleeve has enough bending resistance and torsion resistance strength and meets the stability of switch operation.

In this embodiment, the upper conductive terminal includes an upper conductor 21 and an upper connection terminal 22, an avoidance groove 23 for avoiding the moving contact is disposed below the upper conductor, the lower conductive terminal includes a lower conductor 31 and a lower connection terminal 32, and an opening 33 for passing through the moving contact is disposed in the middle of the lower conductor.

In this embodiment, when the switch is closed, the operating pull ring is pushed by the power insulation operating rod to push the moving contact into the insulation sleeve, two contacts on the moving contact are respectively and reliably contacted with the upper conductive terminal and the lower conductive terminal, and the switch is in a closed state at this time;

the operation pull ring rotates, drives the moving contact and rotates, and the stuck point on the moving contact rotates, supports and leans on the upper surface of fixing at the non-fluting position of gasket, dies the moving contact lock, prevents that the moving contact vibrations from droing.

When the switch is opened, the operating pull ring is rotated through the electric insulation operating rod, the clamping point on the moving contact rotates to the slotting position of the gasket, the moving contact of the pull ring is pulled and operated downwards, the clamping point on the moving contact passes through the slotting of the gasket, the moving contact extends out of the insulating sleeve and is separated from the upper conductive terminal and the lower conductive terminal, and the switch is in an opening state at the moment.

Any technical solution disclosed in the present invention is, unless otherwise stated, disclosed a numerical range if it is disclosed, and the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Because numerical value is more, can't be exhaustive, so the utility model discloses just disclose some numerical values with the illustration the technical scheme of the utility model to, the numerical value that the aforesaid was enumerated should not constitute right the utility model discloses create the restriction of protection scope.

Also, above-mentioned the utility model discloses if disclose or related to mutually fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated.

The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims

1. A closed isolating switch is characterized by comprising a transparent insulating sleeve, an upper conductive terminal positioned at the upper end of the insulating sleeve and a lower conductive terminal positioned at the lower end of the insulating sleeve, wherein a movable contact capable of moving along the length direction of the insulating sleeve is arranged in the insulating sleeve, contacts are arranged at the top end and the lower end of the movable contact, the contact positioned at the top end of the movable contact is in contact communication with the upper conductive terminal, the contact positioned at the lower end of the movable contact is in contact communication with the lower conductive terminal, and the upper conductive terminal, the lower conductive terminal, the insulating sleeve and the movable contact form a closed space for reducing the influence of the environment on the switch.

2. The enclosed type isolating switch of claim 1, wherein a gasket is disposed inside the lower conductive terminal, a slot is disposed on the inner ring of the gasket, and a fastening point for passing through the slot is disposed outside the movable contact to fasten the fastening point of the movable contact against the upper surface of the gasket at a non-slotted position.

3. The enclosed isolator switch of claim 1, wherein said contacts are finger structures, said finger structures being surrounded by a plurality of contact blades; the contact piece is an elastic body and ensures good contact with the inner walls of the upper conductive terminal and the lower conductive terminal.

4. The enclosed type isolation switch as claimed in claim 1, wherein the movable contact is provided with an operation pull ring at a lower end thereof.

5. The closed isolating switch according to claim 1, wherein a fixing fitting is arranged in the middle of the insulating sleeve, and the fixing fitting is provided with a mounting hole.

6. The enclosed type isolating switch of claim 1, wherein a plurality of umbrella skirt structures are arranged at intervals from top to bottom outside the insulating sleeve.

7. The enclosed type isolating switch of claim 1, wherein the upper conductive terminal includes an upper conductor and an upper terminal, an avoiding groove for avoiding the moving contact is provided below the upper conductor, the lower conductive terminal includes a lower conductor and a lower terminal, and an opening for the moving contact to pass through is provided in the middle of the lower conductor.