CN218866972U

CN218866972U - Novel GW9 type isolating switch

Info

Publication number: CN218866972U
Application number: CN202223194818.0U
Authority: CN
Inventors: 王超; 杜培鹏; 苏明涛; 李廷彬; 戚骁; 葛仿; 朱祥东; 樊勃; 杨新京; 鲍国勇; 王博; 侯玉鑫; 亓浩
Original assignee: Shandong Taikai Intelligent Power Distribution Co ltd
Current assignee: Shandong Taikai Intelligent Power Distribution Co ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-04-14
Anticipated expiration: 2032-12-01

Abstract

The utility model discloses a novel GW9 type isolating switch, which relates to the field of power equipment, improves the prior GW9 type isolating switch, and carries out integrated design on a moving contact and a static contact and corresponding wire holders respectively, thereby increasing the mechanical strength and stability of the equipment; the support with the bending limit for clamping the disconnecting link is arranged, and the installation position of a connecting pin shaft of the disconnecting link is adjusted in a matching manner, so that the requirements of 90-degree and 160-degree opening and closing angles of the disconnecting link are met; the flip self-locking mechanism is designed, so that the tripping phenomenon cannot occur, and the working state of the switch is safer and more reliable; in addition, the heat dissipation area is increased through the shape design of the upper part of the moving contact, the surface area contact surface of the moving contact and the surface area contact surface of the static contact are improved, and the conductivity of the device is increased, so that the whole isolating switch is excellent in quality, stable in operation, safe and reliable.

Description

Novel GW9 type isolating switch

Technical Field

The utility model belongs to the technical field of power equipment and specifically relates to a novel GW9 type isolator.

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,50hz power system to switch a load live high-voltage line and isolate the live high-voltage line from electrical equipment such as a high-voltage bus or a breaker to be overhauled. The isolating switch is mainly characterized by no arc extinguishing capability and only can be used for switching on and off the circuit under the condition of no load current. 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 product are simple, but the product has large use amount and high requirement on working reliability, and has great influence on the design, the establishment and the safe operation of a substation and a power plant.

Existing high voltage isolation switches include: the two insulating struts are vertically fixed on the mounting plate, the moving contact and the fixed contact are respectively fixed on the insulating struts, the two insulating struts are also provided with wiring terminals corresponding to the moving contact and the fixed contact, wherein the first wiring terminal is connected with the moving contact, the second wiring terminal is connected with the fixed contact, two contact plates are connected between the two contacts in parallel, one ends of the two contact plates are hinged to the fixed contact, and the other ends of the two contact plates can be closed or separated from the moving contact.

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

1. the existing market switch cannot meet the opening and closing requirement of an opening and closing angle of 160 degrees when being installed at an inclination angle of 45 degrees;

2. the mechanical strength and stability of the existing product need to be improved;

3. the disconnecting link is easy to be released in the repeated opening and closing process.

Disclosure of Invention

For solving the technical problem that above-mentioned exists, the utility model provides a novel GW9 type isolator, stable in structure, mechanical strength is high, and electric conductive property is good, can satisfy the operating requirement of angle 160 that opens and shuts, is difficult for the dropout, and operating condition is safer.

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

the utility model provides a novel GW9 type isolator comprises the monopole of three same disjunctor that sets up on same base, and every monopole includes operating mechanism, drive mechanism, switch mechanism and electrically conductive mechanism, electrically conductive mechanism includes left pillar insulator and the right pillar insulator that sets up perpendicularly on the base, fixed left connection terminal and the right connection terminal of being provided with respectively on left pillar insulator and the right pillar insulator, the fixed moving contact that is provided with on the connection terminal of a left side, the fixed static contact that is provided with on the connection terminal of the right side, the overlap joint has the switch between moving contact and the static contact, switch-on is realized with static contact swing joint, the other end and moving contact meshing to the switch-on, left side connection terminal and moving contact, right connection terminal and static contact all set up structure as an organic whole, the fixed support that is used for centre gripping switch that sets up respectively on left side connection terminal, the right connection terminal, the support sets up the spacing portion of bending at the one end tip of moving contact, the switch comprises through two sets up two sets of blades side by side, will when isolator inclines 45 installations, through the mounted position of adjusting switch and support department realize the requirement of selling 90 and opening and shutting of a pin axle 160.

The upward part of the moving contact is transversely trapezoidal.

The surfaces of the moving contact and the static contact are integrally plated with tin, and the contact surfaces are provided with graphite silver plating layers.

The disconnecting link is connected with the support at one end of the static contact through a stainless steel semi-wire bolt, one end of the stainless steel semi-wire bolt is provided with a flat pad which is pressed against the disconnecting link, and the other end of the stainless steel semi-wire bolt is provided with a spring which is pressed against the disconnecting link, so that the disconnecting link and the static contact can be connected in a separable mode.

The periphery of left pillar insulator and right pillar insulator is provided with the parachute kit that the umbrella leaf that the diameter is different constitutes, the diameter of umbrella leaf appears according to size in turn.

This isolator still is provided with flip-chip self-locking mechanism, includes colludes board, cardboard, limiting plate and torsional spring, the limiting plate is connected between static contact and right branch post insulator, set up the backing plate between moving contact and the left branch post insulator, the relative position of limiting plate sets up the backing plate unanimous with it thickness, the backing plate sets up between moving contact and left branch post insulator, collude board and switch fixed connection, the cardboard sets up to Z template structure, and its both ends slot forms buckle structure with colluding board, limiting plate contact respectively, cardboard and switch parallel arrangement run through the pivot, the torsional spring is walked around the pivot and its both ends respectively with cardboard and switch fixed connection, colludes excellent pulling or propelling movement through the insulation and colludes board (7) and drive the switch and revolute the rotation of axes and realize divide-shut operation.

The bracket is provided with a switching-on limiting part at one end part of the fixed contact to limit the switching-on position of the disconnecting link.

The utility model improves the prior GW9 type isolating switch, and integrally designs the moving contact and the static contact with the corresponding wire holder respectively, thereby increasing the mechanical strength and the stability of the device; the support with the bending limit for clamping the disconnecting link is arranged, and the installation position of a connecting pin shaft of the disconnecting link is adjusted in a matching manner, so that the requirements of 90-degree and 160-degree opening and closing angles of the disconnecting link are met; the flip self-locking mechanism is designed, so that the tripping phenomenon cannot occur, and the working state of the switch is safer and more reliable; in addition, the heat dissipation area is increased through the shape design of the upper part of the moving contact, the surface area contact surface of the moving contact and the surface area contact surface of the static contact are improved, and the conductivity of the device is increased, so that the whole isolating switch is excellent in quality, stable in operation, safe and reliable.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a side view of the present invention (with a knife switch hidden);

fig. 3 is a top view of the present invention;

fig. 4 is an overall view of the bracket 12 of the present invention;

FIG. 5 is an oblique view of the present invention (with a knife switch hidden);

detailed description of the preferred embodiments

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

as shown in fig. 1-5, the novel GW9 type isolation switch is composed of three same connected monopoles disposed on the same base, each monopole includes an operating mechanism, a transmission mechanism, a disconnecting link mechanism and a conductive mechanism, the conductive mechanism includes a left pillar insulator 1 and a right pillar insulator 2 vertically disposed on a base 3, a left wiring seat 4 and a right wiring seat 5 are respectively and fixedly disposed on the left pillar insulator 1 and the right pillar insulator 2, a movable contact is fixedly disposed on the left wiring seat 4, a fixed contact is fixedly disposed on the right wiring seat 5, a disconnecting link 6 is lapped between the movable contact and the fixed contact, one end of the disconnecting link 6 is movably connected with the fixed contact, the other end of the disconnecting link is meshed with the movable contact to realize closing, the left wiring seat 4 and the movable contact, the right wiring seat 5 and the fixed contact are all disposed into an integrated structure, a support 12 for clamping the disconnecting link 6 is respectively and fixedly disposed on the left wiring seat 4 and the right wiring seat 5, a bending limit portion 18 is disposed at one end of the movable contact 12, the disconnecting link 6 is formed by two groups of disconnecting links disposed in parallel through fixed connection with two ends of a pin 14, when the isolation switch is inclined, the isolating switch is mounted at an angle of 45 degrees, and the support is opened and closed by 90 degrees and 90 degrees with the support at the movable contact position of the connecting seat 14.

As a preferable mode, in this embodiment, the upward portion of the movable contact is a horizontal trapezoid, and an arc-shaped guide structure (a bending part of the bending limiting part 18) perpendicular to the extension line of the disconnecting link 6 is arranged on the periphery of the movable contact, so that the distance between the two groups of disconnecting links is increased, the heat dissipation area is increased, the temperature rise is favorably reduced, the disconnecting link and the movable contact are meshed more tightly, the mechanical strength of the contact switch is improved, and the dynamic stability of the switch is improved.

As a preferable mode, in this embodiment, the surfaces of the moving contact and the static contact are integrally plated with tin, and the contact surface is provided with a graphite silver plating layer, so that the conductivity of the device is further improved.

As a preferable mode, in this embodiment, the disconnecting link 6 is connected to the bracket 12 at one end of the fixed contact through a stainless steel half-wire bolt 17, one end of the stainless steel half-wire bolt 17 is provided with a flat pad 16 to abut against the disconnecting link 6, and the other end of the stainless steel half-wire bolt 17 is provided with a spring 15 to abut against the disconnecting link 6, so that separable connection between the disconnecting link 6 and the fixed contact is realized.

Preferably, in this embodiment, the outer peripheries of the left post insulator 1 and the right post insulator 2 are provided with umbrella groups composed of umbrella blades having different diameters, and the diameters of the umbrella blades alternate in size.

As the preferred mode, this isolator still is provided with flip-chip self-locking mechanism, includes colluding board 7, cardboard 9, limiting plate 10 and torsional spring 8, limiting plate 10 is connected between static contact and right branch post insulator 2, the relative position of limiting plate 10 sets up the backing plate 11 unanimous with it thickness, backing plate 11 sets up between moving contact and left branch post insulator 1, collude board 7 and switch 6 fixed connection, cardboard 9 sets up to Z template structure, and its both ends slot forms buckle structure with colluding board 7, limiting plate 10 contact respectively, cardboard 9 and switch 6 parallel arrangement run through pivot 19, torsional spring 8 has walked around pivot 19 and its both ends respectively with cardboard 9 and switch 6 fixed connection, colludes excellent pulling through the insulating stick or propelling movement colludes board 7 and drive switch 6 and revolute the rotation of axle 19 and realize the divide-shut brake operation, the phenomenon of difficult appearance dropout, and switching performance is more reliable, and operating condition is safer.

And the bracket 12 is provided with a closing limiting part 13 at one end part of the static contact to limit the closing position of the disconnecting link 6.

The utility model discloses in concrete operation process, during the separating brake, utilize insulating stick pulling to collude board 7, collude board 7 and drive cardboard 9 and revolute 19 rotations of axes, treat that cardboard 9 rotates extreme position, 9 bottom slots of cardboard break away from with limiting plate 10, continue to collude the stick pulling through insulating and collude board 7 for 6 integral rotations of switch, with 5 integral separations of right connection terminal. When the disconnecting link 6 is separated from the fixed contact, the pin 14 between the two groups of disconnecting links of the disconnecting link 6 is contacted with the bracket 12 at the part of the fixed contact, at this time, the disconnecting link 6 cannot rotate downwards continuously, and the disconnecting link is in place; when the requirement of 160 degrees of opening and closing is required, the pin shaft 14 is taken down, the disconnecting link 6 cannot continuously rotate downwards when contacting the bending limit 18 of the bracket 12, and the disconnecting link is in place.

During closing, the insulating hook rod pushes the hook plate 7 to drive the disconnecting link 6 to rotate until the groove of the clamping plate 9 rotates along the circular edge of the groove to pass through the limiting plate 10, and the groove of the clamping plate 9 is repeatedly reset under the action of the torsion spring 8, so that the groove of the clamping plate 9 enters the limiting plate 10 to realize self-locking and complete closing.

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

1. A new GW9 type isolating switch is composed of three same conjoined monopoles arranged on the same base, each monopole comprises an operating mechanism, a transmission mechanism, a disconnecting link mechanism and a conductive mechanism, the conducting mechanism comprises a left post insulator (1) and a right post insulator (2) which are vertically arranged on a base (3), a left wire holder (4) and a right wire holder (5) are respectively and fixedly arranged on the left post insulator (1) and the right post insulator (2), a moving contact is fixedly arranged on the left wiring seat (4), a static contact is fixedly arranged on the right wiring seat (5), a knife switch (6) is lapped between the moving contact and the static contact, one end of the knife switch (6) is movably connected with the static contact, the other end is meshed with the moving contact to realize switch-on, it is characterized in that the left wiring seat (4) and the moving contact, the right wiring seat (5) and the static contact are all arranged into an integral structure, a bracket (12) for clamping the disconnecting link (6) is respectively and fixedly arranged on the left wire holder (4) and the right wire holder (5), the bracket (12) is provided with a bending limit part (18) at one end part of the moving contact, the disconnecting link (6) is formed by fixedly connecting two groups of disconnecting link blades which are arranged in parallel through pin shafts (14) at two ends, when the disconnecting link is installed by inclining 45 degrees, the requirements of opening and closing at 90 degrees and 160 degrees are realized by adjusting the installation positions of the disconnecting link (6) and the pin shaft (14) at the position of the bracket (12).

2. A novel GW9 type isolation switch as claimed in claim 1, wherein the upward portion of said movable contact is configured as a transverse trapezoid.

3. The new GW9 type isolation switch as claimed in claim 1, wherein said moving and static contacts are integrally tinned and the contact surface is provided with graphite silver plating.

4. A novel GW9 type isolation switch as claimed in claim 1, characterized in that said switch (6) is connected to a support (12) at one end of a static contact by a stainless steel half-wire bolt (17), one end of said stainless steel half-wire bolt (17) is provided with a flat pad (16) to press against the switch (6), and the other end is provided with a spring (15) to press against the switch (6), so as to realize the separable connection between the switch (6) and the static contact.

5. A new GW9 type isolation switch as claimed in claim 1, wherein said left (1) and right (2) post insulators are provided with groups of umbrellas having different diameters around their periphery, said diameters of said umbrellas alternate in size.

6. The novel GW9 type isolation switch according to any one of claims 1-5, wherein the isolation switch is further provided with an inverted self-locking mechanism, and the inverted self-locking mechanism comprises a hook plate (7), a clamping plate (9), a limiting plate (10) and a torsion spring (8), the limiting plate (10) is connected between a static contact and a right post insulator (2), a base plate (11) with the same thickness is arranged at the relative position of the limiting plate (10), the base plate (11) is arranged between a moving contact and the left post insulator (1), the hook plate (7) is fixedly connected with the knife switch (6), the clamping plate (9) is arranged in a Z-shaped plate structure, grooves at two ends of the clamping plate (9) are respectively in contact with the hook plate (7) and the limiting plate (10) to form a buckling structure, the clamping plate (9) and the knife switch (6) are arranged in parallel and penetrate through a rotating shaft (19), the torsion spring (8) winds around the rotating shaft (19) and two ends of the torsion spring are respectively fixedly connected with the clamping plate (9) and the knife switch (6), and the insulation hook plate (7) is pulled or pushed to rotate around the rotating shaft (19) to realize the switching operation.

7. A new GW9 type isolation switch as claimed in claim 1, wherein said bracket (12) has a closing limiting part (13) at one end of the static contact to limit the closing position of the disconnecting link (6).