CN218866973U - Novel GW4 outdoor high-voltage isolating switch - Google Patents

Abstract

The utility model discloses a novel outdoor high voltage isolator of GW4 relates to electric power system application equipment field. The utility model carries out surface anticorrosion treatment on the related parts of the existing product, and avoids the switch from being affected by external environmental conditions to cause failure; the material and the forming structure of the conductive part are adjusted, so that the mechanical strength is improved, the loss of a loop is reduced, the resistance of the loop is reduced, and the working stability of the whole switch is improved; the contact position of the contact and the contact finger is subjected to anti-corrosion treatment, the structure of the contact finger is improved, the accurate closing position is ensured, the depth and meshing firmness of the contact inserted into the contact finger are ensured, the operation is more convenient and smooth, the opening and closing are more reliable, and the device is suitable for large-scale popularization and application.

Description

Novel GW4 outdoor high-voltage isolating switch

Technical Field

The utility model relates to an electric power system application equipment field, specific novel GW4 outdoor isolator that says so.

Background

An isolating switch (commonly known as a "knife switch") is a high-voltage isolating switch, and is mainly used in an outdoor alternating-current 10-40.5kv and 50HZ power system to perform switching of a live high-voltage line and electrical isolation of the live high-voltage line from electrical equipment such as a high-voltage bus or a circuit breaker to be overhauled. The isolating switch has no arc extinguishing capacity, and can be used for switching on and off the circuit only under the condition of no load current, and the product is widely applied to the fields of electric power, railways, mines, oil fields and the like. The working principle and the structure of the device are simple, but the device has high requirements on working reliability due to large usage amount, and has large influence on the design, the establishment and the safe operation of a substation and a power plant.

The existing high-voltage isolating switch structure comprises the following characteristics: the two insulating pillars are vertically fixed on the base, umbrella groups with the same diameter are arranged on the insulating pillars, cast aluminum conducting seats are respectively fixed on the insulating pillars, and binding posts and conducting tubes are respectively arranged on the conducting seats on the two sides. The binding post is connected with the binding post, the conductive tube is connected with the contact or the contact finger, and the binding post is connected with the conductive tube in a flexible connection mode.

The existing high-voltage isolating switch structure has the following defects:

1. the umbrella groups with the same diameter are arranged on the outer circumference of the insulation strut of the existing isolating switch, and the environmental adaptability and the voltage resistance grade of the product are not very high;

2. the main parts of the existing switch are exposed, are influenced by external conditions, and are easy to rust, so that the transmission resistance is increased and even the phenomenon of movement rejection is caused during operation;

3. the main conductive loop has a complex structure and more electrically connected components, the connection between the wiring terminal and the outlet post is formed in a non-integrated mode, and the risk of loop loss is increased due to the influence of the tightness of the connection between the components, so that the loop resistance of the whole high-voltage isolating switch is higher;

4. after multiple operations, the dynamic and static contacts are mechanically abraded, and the opening and closing positions are staggered and the insertion depth is not enough.

Disclosure of Invention

For solving the technical problem that exists, the utility model provides a novel outdoor high voltage isolator of GW4, stable in structure, the heat-sinking capability is strong, and electric conductive property is good, and the assembly is simple, touches to indicate to mesh with the contact is tight, moves reliable and stable, and adaptability to the environment is strong.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

the utility model provides a novel outdoor high voltage isolator of GW4, by three structure the same, the monopole that sets up side by side constitutes, is a whole through the hookup of transmission link between each monopole, every monopole includes base, left post insulator, right post insulator, left conductive part, right conductive part and switch portion, left post insulator and right post insulator set up on the base, left conductive part and right conductive part set up respectively in the top of left post insulator and right post insulator, left conductive part is by left binding post, left conductive seat, touch the finger seat and touch the finger and connect in order and constitute, right conductive part is connected in order by right binding post, right conductive seat and contact and constitutes, through the divide-shut brake that the action of operating structure control contact and touching the finger realized isolator, the base adopts hot-galvanize steel component and compound axle sleeve assembly to form, left conductive seat and right conductive seat set up to the aluminium alloy structure, left side binding post and right binding post set up to wiring board and outlet post integrated into the structure, the inside every layer surface of soft connection that is used for forming conductive loop of left conductive part and right conductive part all sets up tin coating, it sets up to touch the finger to touch to indicate to set up to external pressure type spring, the finger and touch that the contact and the silver region area that the current that the contact that the current flows through on the finger all is provided with.

The umbrella cluster that the umbrella leaf that left pillar insulator and right pillar insulator periphery were provided with the diameter difference and constitute, the diameter of umbrella leaf appears according to direction of height size in turn in the umbrella cluster.

And the porcelain bottle sintering positions of the left post insulator and the right post insulator are provided with a sand exposure layer and a waterproof layer.

The grounding knife part of the isolating switch comprises a grounding knife tube, a grounding knife contact finger and a grounding static contact, the grounding knife tube is of an aluminum alloy square tube structure, the grounding knife contact finger is arranged at the tail end of the grounding knife tube, the grounding knife contact finger is of a self-operated structure and is provided with a tin coating, and when the switch is switched on, the grounding knife contact finger moves to the grounding static contact and clamps the grounding static contact by means of self elasticity.

The utility model carries out surface anticorrosion treatment on the related parts of the existing product, and avoids the switch from being affected by external environmental conditions to cause failure; the material and the forming structure of the conducting part are adjusted, so that the mechanical strength is improved, the loss of a loop is reduced, the resistance of the loop is reduced, and the working stability of the whole switch is improved; the contact position of the contact and the contact finger is subjected to anti-corrosion treatment, the structure of the contact finger is improved, the accurate closing position is ensured, the depth and meshing firmness of the contact inserted into the contact finger are ensured, the operation is more convenient and smooth, the opening and closing are more reliable, and the device is suitable for large-scale popularization and application.

Drawings

Fig. 1 is a front view of a single pole of a GW4 isolating switch of the present invention;

fig. 2 is a main conductive schematic diagram of the GW4 isolator of the present invention;

fig. 3 is a three-phase assembly plan view of the GW4 isolating switch of the present invention;

fig. 4 is an overall installation diagram of the GW4 isolating switch of the present invention;

fig. 5 is a view from direction a of fig. 4.

Detailed Description

The invention is described in detail below with reference to the following figures and specific embodiments:

as shown in fig. 1-5, a novel GW4 outdoor high-voltage isolation switch is composed of three monopoles having the same structure and arranged in parallel, each monopole is connected into a whole through a transmission link, each monopole includes a base 1, a left post insulator 2, a right post insulator 3, a left conductive part, a right conductive part and a knife switch part, the base 1 is provided with a left flange shaft 15 and a right flange shaft 16, the left post insulator 2 and the right post insulator 3 are arranged on the left flange shaft 15 and the right flange shaft 16, the left conductive part and the right conductive part are respectively arranged on the top ends of the left post insulator 2 and the right post insulator 3, the left conductive part is formed by sequentially connecting a left wiring terminal 4, a left conductive seat 5, a finger seat 6 and a finger 7, the right conductive part is formed by sequentially connecting a right wiring terminal 10, a right conductive seat 9 and a contact 8, the division and division of the isolation switch are realized by the division and division of the operation structure control contact 8 and the contact finger seat 7, the base 1 is made of a hot-dip galvanized steel part and is assembled with the left flange shaft 15 and the right flange shaft 16 through an inlet composite shaft sleeve, the left conductive seat 5 and the outer contact seat 9, the left conductive part and the contact seat are arranged as an aluminum profile structure, and a left conductive part are arranged on the outer contact seat contact spring 7, and a left conductive part are arranged on the outer contact seat contact spring contact plate, and a left contact plate 7, and a left contact spring contact plate are arranged to form a hard contact plate, and a contact structure, and a contact plate area, and a contact area.

In the utility model, the base is assembled by hot-dip galvanized steel pieces and the composite shaft sleeve, so that the mechanical strength and the corrosion resistance of the base 1 are improved; the left conductive seat 5 and the right conductive seat 9 are of aluminum profile structures, can bear large stress in all directions, and are excellent in mechanical property and conductivity; the left wiring terminal 4 and the right wiring terminal 10 are arranged into an integrated structure, so that the mechanical strength and the conductivity are improved, and a possible heating point is reduced; the soft connection inside the left conductive part and the right conductive part is subjected to tin plating treatment, and areas, through which current flows, on the contact 8 and the contact finger 7 are subjected to hard silver plating treatment, so that the conductive capacity and the corrosion resistance of the parts are improved; the contact finger 7 adopts an external pressure type spring contact finger, has large surface area, good heat dissipation capacity, good self-cleaning and wear-resistant capacity, eliminates the influence of skin effect, and ensures that the contact 8 is inserted into the contact finger 7 to a deeper depth, thereby greatly improving the reliability of electric conduction.

Preferably, umbrella groups composed of umbrella blades with different diameters are arranged on the peripheries of the left post insulator 2 and the right post insulator 3, and the diameters of the umbrella blades in the umbrella groups are alternatively arranged according to the height direction, so that the environmental adaptability and the voltage withstanding grade of equipment are improved.

As a preferable mode, the sintered positions of the porcelain bottles of the left post insulator 2 and the right post insulator 3 are provided with a sand exposure layer and a waterproof layer, so that the corrosion resistance to the external environment is improved.

As a preferable mode, the grounding knife part of the isolating switch includes a grounding knife tube 11, a grounding knife contact finger 12 and a grounding static contact 14, the grounding knife tube 11 is an aluminum alloy square tube structure, the grounding knife contact finger 12 is arranged at the tail end of the grounding knife tube 11, the grounding knife contact finger 12 is a self-operated structure and is provided with a tin-plated layer, when the switch is switched on, the grounding knife contact finger 12 moves to the grounding static contact 14 and clamps the grounding static contact 14 by means of self elasticity, and the mechanical strength of the device and the contact reliability during the switch-on are improved. The stainless steel spring is added on the outer side of the self-operated structure of the grounding knife contact finger 12, so that the clamping force of the stainless steel spring is ensured, and the contact reliability with the grounding fixed contact 14 during closing is improved.

The utility model discloses when closing a floodgate, clockwise operation manual mechanism 23 drives a unipolar left pillar insulator 2 of isolator through main sword vertical transmission pole 21 and rotates, drives right pillar insulator 3 through one set of pull rod mechanism 17 on the base 1 and rotates, makes the three-phase synchronization action through the main sword horizontal connecting rod 19 that the initiative is connected, realizes touching and indicates 7 and the meshing of contact 8, accomplishes the combined floodgate.

When the brake is switched off, the handle of the manual mechanism 23 is pulled reversely, the switch main shaft is reversed through the main knife vertical transmission rod 21, each single pole is connected with the main knife horizontal connecting rod 19 through the pull rod mechanism 17, and three-pole synchronous brake switching-off is realized under the driving of the active phase.

The three-pole earthing knife is connected together through the earthing knife horizontal transmission rod 18, when the earthing knife is switched on, the manual operating mechanism 23 drives the connecting rod 20 through the earthing knife vertical transmission rod 22, and the connecting rod 20 pulls the earthing knife horizontal connecting rod 18 to rotate so as to realize the switching-on operation of the earthing knife.

When the brake is opened, the handle of the manual mechanism 23 is operated reversely. The mechanical interlocking of the earthing switch and the disconnecting switch is realized by installing locking plates on the main switch vertical operating rod 21 and the earthing switch vertical operating rod 22.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims (4)

1. A novel GW4 outdoor high-voltage isolating switch comprises three monopoles with the same structure and arranged in parallel, wherein each monopole is connected into a whole through a transmission connecting rod, each monopole comprises a base (1), a left pillar insulator (2), a right pillar insulator (3), a left conductive part, a right conductive part and a disconnecting link part, the left pillar insulator (2) and the right pillar insulator (3) are arranged on the base (1), the left conductive part and the right conductive part are respectively arranged on the top ends of the left pillar insulator (2) and the right pillar insulator (3), the left conductive part is formed by sequentially connecting a left wiring terminal (4), a left conductive seat (5), a contact finger seat (6) and a contact finger (7), the right conductive part is formed by sequentially connecting a right wiring terminal (10), a right conductive seat (9) and a contact (8), the contact finger seat (7) and a coating action are controlled by an operating structure, the contact finger (8) and a coating action are arranged to realize the isolating switch, the isolating switch is characterized in that the base (1) is assembled by adopting a hot galvanizing steel part and a composite shaft sleeve, the left conductive seat (5) and the right conductive seat (9) are arranged into a coating structure, and a coating spring (4) and a coating contact spring are arranged on the surface of the outer conductive terminal (7) and a left conductive part (10) and a connecting wire outlet contact finger contact spring) are arranged on the surface to form a left conductive part structure, and the areas of the contact (8) and the contact finger (7) through which the current flows are provided with hard silver coatings.

2. A novel GW4 outdoor high-voltage isolation switch as claimed in claim 1, characterized in that the periphery of said left post insulator (2) and right post insulator (3) is provided with a cluster of umbrellas with different diameters, and the diameters of the umbrellas in said cluster of umbrellas alternate in height.

3. A novel GW4 outdoor high-voltage isolation switch as claimed in claim 1, characterized in that the porcelain bottle sintering places of the left post insulator (2) and the right post insulator (3) are provided with a sand exposure layer and a waterproof layer.

4. A novel GW4 outdoor high-voltage isolating switch according to any one of claims 1-3, characterized in that the isolating switch's earthing knife part includes earthing knife pipe (11), earthing knife contact finger (12) and earthing static contact (14), earthing knife pipe (11) sets up to aluminum alloy square tube structure, earthing knife contact finger (12) sets up in the end of earthing knife pipe (11), earthing knife contact finger (12) sets up to formula of relying on oneself structure and sets up tin coating, during closing a floodgate, earthing knife contact finger (12) move to earthing static contact (14) and rely on self elasticity to press from both sides earthing static contact (14).

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