CN207743142U - A kind of three-station - Google Patents
A kind of three-station Download PDFInfo
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- CN207743142U CN207743142U CN201820230458.XU CN201820230458U CN207743142U CN 207743142 U CN207743142 U CN 207743142U CN 201820230458 U CN201820230458 U CN 201820230458U CN 207743142 U CN207743142 U CN 207743142U
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Abstract
The utility model belongs to power switchgear technical field, and in particular to a kind of three-station.The three-station includes：The static contact that is electrically connected with the main vacuum interrupter in breaker major loop, the insulating contact being electrically connected with the ground connection vacuum interrupter in earth-return circuit, isolation switch and driving isolation switch with static contact when closing a floodgate, make the major loop conducting where main vacuum interrupter, when closing a floodgate with the insulating contact, make the isolation ground connection three position mechanism of the earth-return circuit conducting.The three-station of the utility model makes earthing switch that there is higher level to be grounded making capability by the way that ground connection vacuum interrupter is arranged in earthing switch.It is grounded three position mechanism by isolation, keep ground connection vacuum interrupter chain in the presence of priority in logic with isolation switch, only when isolation switch is in isolated location, ground connection vacuum interrupter combined floodgate can just be such that earth-return circuit is connected, and the reliability of earth-return circuit is ensured in logical relation.
Description
Technical field
The utility model belongs to power switchgear technical field, and in particular to a kind of three-station is based on the ground connection
The ring main unit of switch and the operating method of ring main unit.
Background technology
Existing Inflatable ring main unit, which is grounded, closes function there are three types of mode, 1. 3 station-rotary type disconnecting link earthing switch knots
Structure, which is grounded, closes function；2. Direct Action Type earthing switch structure is grounded function；3. using vacuum interrupter i.e. as master
Loop opening short circuit current is used, and is grounded as earthing switch and is closed function.Three kinds of modes respectively have an advantage and disadvantage, mode one,
The shortcomings that mode two is to carry out the easy ablation of contact when ground connection closes, contact knife, generates metallic ionization, pollutes seal case
Internal environment influences the through-current capability and dielectric level of major loop.The shortcomings that mode three is that the net safety operation of operation violation state is wanted
It asks, easily causes operator's misunderstanding.
To solve the above-mentioned problems, also there are the ring main unit using double arc extinguishing chambers, such as CN104377073A in the prior art
Disclose a kind of earthing switch and the solid insulation ring main unit based on the earthing switch.It includes vacuum interrupter, ground connection arc extinguishing
Room and setting vacuum interrupter and the pole ontology for being grounded arc-chutes.Ground connection also uses the form of vacuum interrupter, may be implemented
Repeatedly safe and reliable ground connection closes.But logic is not present with ground connection vacuum interrupter in above-mentioned earthing switch structure isolation switch
On it is chain, no matter which kind of position isolation switch is in, when be grounded vacuum interrupter close a floodgate when, earth-return circuit just directly conducting,
After this there is major loop combined floodgate conducting, accidentally splice grafting earth-return, makes the risk of entire circuit electrical ground.And ground connection vacuum is gone out
Arc chamber is poured into pole, is scrapped when arc-chutes can not replace entire pole when something goes wrong.In addition, arc-chutes and absolutely
Edge pull rod lateral arrangement takes up space big.
Utility model content
The purpose of the utility model is to overcome the easy maloperation of earthing switch in the prior art, safety is low and arc-chutes not
The problem easily replaced etc. has that priority in logic is chain, ground connection arc extinguishing to provide a kind of ground connection arc-chutes and isolation switch
The easily changeable earthing switch in room, the operating method of ring main unit and ring main unit based on the earthing switch.
To realize above-mentioned technical purpose and the technique effect, the utility model is achieved through the following technical solutions：
A kind of three-station, including：The static contact that is electrically connected with the main vacuum interrupter in breaker major loop, with connect
Insulating contact, isolation switch and the driving isolation switch of ground connection vacuum interrupter electrical connection in earth-return with it is described
When static contact closes a floodgate, make the major loop conducting where the main vacuum interrupter, when closing a floodgate with the insulating contact, make described connect
The isolation of earth-return conducting is grounded three position mechanism.
The ground connection vacuum interrupter is detachable on ground connection vacuum interrupter installation position, the ground connection vacuum interrupter peace
When being not provided with ground connection vacuum interrupter on dress position, the three-station further includes that the ground connection being electrically connected with the earth-return circuit is touched
Seat, the isolation ground connection three position mechanism drive the isolation switch when the static contact closes a floodgate, make the main vacuum extinction
Major loop conducting where room；When isolation switch is in isolated location, the major loop and earth-return circuit is made all to disconnect；With institute
When stating ground contact seat combined floodgate, the earth-return circuit is made to be connected.
The isolation switch setting is in isolation shaft, the three position mechanism output shaft of the isolation ground connection three position mechanism
The isolation shaft rotation is driven to drive the isolation switch rotation by intermediate transmission structure.
The isolation is grounded three position mechanism：Shaft, three position mechanism output shaft, ground connection turn is isolated in three position mechanism
Axis is arranged and the first transmission mechanism between shaft and the three position mechanism output shaft, setting is isolated in the three position mechanism
The second transmission mechanism in the ground connection shaft,
When connecting ground contact seat in the earth-return circuit, the isolation ground connection three position mechanism further includes being arranged described three
Third transmission mechanism on station mechanism output shaft, second transmission mechanism and third transmission mechanism cooperation transmission driving
The three position mechanism output shaft rotation；
When isolation fracture carries out division, three position mechanism isolation shaft clockwise or counterclockwise, by the
One transmission mechanism drives the three position mechanism output shaft rotation to drive major loop that shaft division is isolated；
When contact knife division is isolated, the ground connection shaft drives institute clockwise or counterclockwise, by the second transmission mechanism
Stating third transmission mechanism drives the three position mechanism output shaft rotation to drive major loop that shaft division is isolated；
Or
In the earth-return circuit when connection ground connection vacuum interrupter, the isolation ground connection three position mechanism includes that ground connection exports
Shaft, and be arranged second transmission mechanism and it is described ground connection output revolving shaft between the 4th transmission mechanism, described second
Transmission mechanism drives the ground connection output revolving shaft to rotate with the 4th transmission mechanism cooperation transmission；
When isolation fracture carries out division, three position mechanism isolation shaft clockwise or counterclockwise, by the
One transmission mechanism drives the three position mechanism output shaft rotation to drive major loop that shaft division is isolated；
When the ground connection vacuum interrupter ground connection division, the ground connection shaft clockwise or counterclockwise, passes through second
Transmission mechanism drives the 4th transmission mechanism to drive the ground connection output revolving shaft rotation.
First transmission mechanism includes the first elastic energy storage structure, the first transmission component, and the isolation that can rotate around the axis is hit
Plate, and the first connecting lever with the three position mechanism output shaft solid one, when division is isolated in the main vacuum interrupter, institute
It states three position mechanism isolation shaft clockwise or counterclockwise, the energy accumulation spring in the first elastic energy storage structure is driven to arrive
Middle position drives the first transmission component driving isolation to hit plate rotation behind excessively middle position, then by the energy accumulation spring, described
Isolation hits plate and hits first connecting lever to drive three position mechanism output shaft to rotate, to drive major loop isolation shaft point
It closes.
First connecting lever is equipped with the first roller, and the isolation hits plate by hitting first roller, described in driving
First connecting lever rotates.
The isolation hits that plate is U-shaped, and first roller is in the isolation and hits in the U-shaped cavity of plate.
Second transmission mechanism includes the second elastic energy storage structure, the second transmission component, and is grounded and hits plate；Rotation
The ground connection shaft energy accumulation spring in the second elastic energy storage structure was compressed in behind position, the energy accumulation spring is by the row of compression
Journey is released through the second transmission component and the ground connection is driven to hit plate rotation.
The first elastic energy storage structure is formed with the second elastic energy storage structure for the same elastic energy storage structure, and
The three position mechanism isolation shaft is divided into the both ends of the energy accumulation spring of the elastic energy storage structure with the ground connection shaft.
The third transmission mechanism includes that the second connecting lever, the ground connection is arranged on the three position mechanism output shaft to hit plate
The second connecting lever rotation is hit in rotation, to drive the three position mechanism output shaft to rotate, realizes that shaft is isolated in major loop
Division.
Second connecting lever is equipped with the second roller, and the ground connection hits plate rotation and hits second roller, drives second
Connecting lever rotates.
The ground connection hits that plate is U-shaped, and second roller is in the ground connection and hits in the U-shaped cavity of plate.
4th transmission mechanism includes that arc extinguishing room module includes crank, connecting plate, the rotating member being arranged in shaft, arc
Shape connecting plate, wherein one end of the arc connecting plate is hit with the ground connection, plate is hinged, and the other end is hinged with the rotating member, the company
One end of fishplate bar and the rotating member are hinged, and the other end is connect with one end of the crank, the other end of the crank with it is described
It is grounded output revolving shaft connection.
The main vacuum interrupter is arranged with the ground connection vacuum interrupter on insulating support, the ground connection vacuum extinction
Room is set to the lower section of the main vacuum interrupter, and the axis of the ground connection vacuum interrupter and the main vacuum interrupter
Axis is obliquely installed.
Insulating support is made of the composite material that nylon adds glass fibre to mix, or adds glass fibre to mix using plastics
Composite material be made.
The utility model has the beneficial effects that：(1) three-station provided by the utility model, by insulating support
Main vacuum interrupter, ground connection vacuum interrupter and isolation ground connection three position mechanism are set, vacuum interrupter and isolation knife are grounded
The priority that lock exists in logic is chain, and only when isolation switch is in isolated location, ground connection vacuum interrupter combined floodgate can just make
Earth-return circuit is connected, and the reliability of earth-return circuit is ensured in logical relation.
(2) three-station provided by the utility model, by assembly be grounded vacuum interrupter, make earthing switch have compared with
High-grade ground connection making capability, and will not insulate and impact to interiors of products.
(3) three-station provided by the utility model is removably arranged by being grounded vacuum interrupter in insulation branch
On frame, it may be implemented to choose whether installation ground connection vacuum interrupter according to actual demand, can effectively save product cost.
(4) three-station provided by the utility model, by main vacuum interrupter in breaker major loop vertically and
The tilting arrangement of the ground connection vacuum interrupter, can reduce product size.
(5) three-station provided by the utility model, it is compound that the nylon that insulating support uses adds glass fibre to mix
Material, the material are a kind of environmentally friendly materials, have the characteristics that light-weight, repeatable utilization, stability are high.
(6) ring main unit provided by the utility model based on three-station, by the three-station mechanism, in logic
Ensure that there is higher level to be grounded making capability for the reliability of earth-return circuit, earth-return circuit therein in relationship, and will not be right
Ring main unit built-in electrical insulation impacts.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, other drawings may also be obtained based on these drawings.
Fig. 1：The application three-station schematic diagram；
Fig. 2：The application ring main unit side view；
Fig. 3：The application ring main unit front view；
Fig. 4：The isolation for installing arc extinguishing room module is grounded three position mechanism vertical view；
Fig. 5：The schematic three dimensional views of the isolation ground connection three position mechanism of arc extinguishing room module are installed；
Fig. 6：The isolation contact knife different station schematic diagram of arc extinguishing room module is installed；
Fig. 7：The isolation ground connection three position mechanism vertical view of arc-chutes module is not installed；
Fig. 8：The isolation ground connection three position mechanism schematic three dimensional views of arc-chutes module are not installed；
Fig. 9：The isolation contact knife different station schematic diagram of arc-chutes module is not installed；
Figure 10：The application operation principle schematic diagram.
Reference sign：
1- major insulation pull rods, 2- are flexible coupling, the main vacuum interrupters of 3-, 4- static contacts, 5- isolation switch, 6- insulating contacts,
7- is grounded vacuum interrupter, 8- ground insulation pull rods, 9- outlet casing tubes I, 10- transmission parts, 11- outlet casing tubes II, 12- open circuits
Device mechanism, 13- isolation ground connection three position mechanisms, 14- gas tanks, 15- pedestals, 16- isolation modules, 17- output modules, 18- energy storage
Spring, 19- earthing modules, 20- arc extinguishing room modules, 21- ground contact seats, 22- ground connection output revolving shafts, 23- connecting plates, 24- shafts,
25- arc connecting plates, 26- are grounded shaft, and 27- ground connection hits plate, 28- three position mechanism output shafts, and the isolation of 29- three position mechanisms turns
Plate, the first rollers of 31-, the second rollers of 32- are hit in axis, 30- isolation.
Specific implementation mode
Below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in detail.
Embodiment 1
As shown in Fig. 4-5 and 7-8, a kind of isolation ground connection three position mechanism 13 includes：Three position mechanism isolation shaft 29,
Three position mechanism output shaft 28, ground connection shaft 26, setting is in three position mechanism isolation shaft 29 and the three position mechanism
The second transmission mechanism in the ground connection shaft 26 is arranged in the first transmission mechanism between output shaft 28,
When connecting ground contact seat 21 in the earth-return circuit, the isolation ground connection three position mechanism 13 further includes being arranged in institute
The third transmission mechanism on three position mechanism output shaft 28 is stated, second transmission mechanism is passed with third transmission mechanism cooperation
The dynamic driving three position mechanism output shaft 28 rotates；
When isolation fracture carries out division, the three position mechanism isolation shaft 29 clockwise or counterclockwise, passes through
First transmission mechanism drives the rotation of three position mechanism output shaft 28 to drive major loop that shaft division is isolated；
When contact knife division is isolated, the ground connection shaft 26 clockwise or counterclockwise, is driven by the second transmission mechanism
The third transmission mechanism drives the rotation of three position mechanism output shaft 28 to drive major loop that shaft division is isolated；
Or
In the earth-return circuit when connection ground connection vacuum interrupter 7, the isolation ground connection three position mechanism 13 includes ground connection
Output revolving shaft 22, and be arranged in second transmission mechanism and the 4th transmission mechanism being grounded between output revolving shaft 22,
Second transmission mechanism drives the ground connection output revolving shaft 22 to rotate with the 4th transmission mechanism cooperation transmission, such as Fig. 4-5
It is shown；
When isolation fracture carries out division, the three position mechanism isolation shaft 29 clockwise or counterclockwise, passes through
First transmission mechanism drives the rotation of three position mechanism output shaft 28 to drive major loop that shaft division is isolated；
When the ground connection vacuum interrupter 7 is grounded division, the ground connection shaft 26 clockwise or counterclockwise, by the
Two transmission mechanisms drive the 4th transmission mechanism that the ground connection output revolving shaft 22 is driven to rotate.
First transmission mechanism includes the first elastic energy storage structure, the first transmission component, and the isolation that can rotate around the axis is hit
Division is isolated in plate 30, and the first connecting lever with 28 solid of the three position mechanism output shaft one, the main vacuum interrupter 3
When, the three position mechanism isolation shaft 29 clockwise or counterclockwise, drives the storage in the first elastic energy storage structure
Energy spring 18 drives the first transmission component to drive the isolation to excessively middle position behind excessively middle position, then by the energy accumulation spring 18
The rotation of plate 30 is hit, the isolation hits plate 30 and hits first connecting lever to drive three position mechanism output shaft 28 to rotate, to band
Shaft division is isolated in dynamic major loop, as shown in Figure 4-8.
As shown in figure 5, first connecting lever is equipped with the first roller 31, the isolation hits plate 30 by hitting described first
Roller 31 drives the first connecting lever rotation.
The isolation hits that plate 30 is U-shaped, and first roller 31 is in the isolation and hits in the U-shaped cavity of plate 30.
Second transmission mechanism includes the second elastic energy storage structure, the second transmission component, and is grounded and hits plate 27；Rotation
The ground connection shaft 26 energy accumulation spring 18 in second elastic energy storage structure was compressed in behind position, the energy accumulation spring 18 will
The stroke of compression is released through the second transmission component and the ground connection is driven to hit the rotation of plate 27.
The first elastic energy storage structure is formed with the second elastic energy storage structure for the same elastic energy storage structure, and
The three position mechanism isolation shaft 29 is divided into the two of the energy accumulation spring 18 of the elastic energy storage structure with the ground connection shaft 26
End.
The third transmission mechanism includes that second connecting lever, the ground connection is arranged on the three position mechanism output shaft 28 to hit
Second connecting lever rotation is hit in the rotation of plate 27, to drive the three position mechanism output shaft 28 to rotate, realize major loop every
From shaft division.
As shown in figure 8, second connecting lever is equipped with the second roller 32, the ground connection hits the rotation of plate 27 and hits described second
Roller 32 drives the rotation of the second connecting lever.
As shown in figure 5, the ground connection is hit, plate 27 is U-shaped, and second roller 32 is in the U-shaped cavity for being grounded and hitting plate 27
It is interior.
As illustrated in figures 4-5, the 4th transmission mechanism includes crank, connecting plate 23, the rotating member being arranged in shaft 24,
Arc connecting plate 25, wherein one end of the arc connecting plate 25 is hit with the ground connection, plate 27 is hinged, and the other end is cut with scissors with the rotating member
Connect, one end of the connecting plate 23 and the rotating member are hinged, and the other end is connect with one end of the crank, the crank it is another
One end is connect with the ground connection output revolving shaft 22.
Embodiment 2
As shown in Figure 1, a kind of three-station, including：In insulating support, ground insulation pull rod 8 and breaker major loop
The static contact 4 being electrically connected of main vacuum interrupter 3, the insulating contact that is electrically connected with the ground connection vacuum interrupter 7 in earth-return circuit
6, isolation switch 5 and the driving isolation switch 5 make 3 place of the main vacuum interrupter when closing a floodgate with the static contact 4
Major loop conducting, when closing a floodgate with the insulating contact 6, the isolation of earth-return circuit conducting is made to be grounded three position mechanism 13.
Wherein isolation ground connection 13 specific structure of three position mechanism and position relationship are as described in Example 1.
The ground connection vacuum interrupter 7 is detachable on ground connection vacuum interrupter installation position, because of ground connection vacuum interrupter 7
Dismountable setting is flexibly replaced so as to be grounded vacuum interrupter 7, and repair when failure is convenient for replace and according to difference
Technical solution choose whether to install.When being not provided with ground connection vacuum interrupter 7 on the ground connection vacuum interrupter installation position, institute
It further includes the ground contact seat 21 being electrically connected with the earth-return circuit to state three-station, as Figure 7-8；The isolation ground connection three
Station mechanism 13 drives the isolation switch 5 when closing a floodgate with the static contact 4, makes the master where the main vacuum interrupter 3
Circuit is connected；When isolation switch 5 is in isolated location, the major loop and earth-return circuit is made all to disconnect；It is touched with the ground connection
When seat 21 closes a floodgate, the earth-return circuit is made to be connected.Wherein, three position mechanism 13 is grounded by the isolation to realize only when isolation
When disconnecting link 5 is in isolated location, the ground connection combined floodgate of vacuum interrupter 7 can just be such that earth-return circuit is connected.To true in logical relation
The reliability of earth-return circuit is protected.
For the setting of the isolation switch 5 in isolation shaft, the three position mechanism of the isolation ground connection three position mechanism 13 is defeated
Shaft 28 drives the isolation shaft rotation that the isolation switch 5 is driven to rotate by intermediate transmission structure.
The main vacuum interrupter 3 is arranged with the ground connection vacuum interrupter 7 on insulating support, and the ground connection vacuum is gone out
Arc chamber 7 is set to the lower section of the main vacuum interrupter 3, and the axis of the ground connection vacuum interrupter 7 goes out with the main vacuum
The axis of arc chamber 3 is obliquely installed；Effectively reduce bulk.
Insulating support is made of the composite material that nylon adds glass fibre to mix, or adds glass fibre using plastics
Composite material is made；Nylon adds the composite material of glass fibre mixing and plastics that the composite material of glass fibre is added all to be environment friend
Good proximate matter material has the characteristics that light-weight, repeatable utilization, stability are high.
Embodiment 3
A kind of ring main unit, including major insulation pull rod 1, be flexible coupling 2, main vacuum interrupter 3, outlet casing tube I 9, transmission parts
10, outlet casing tube II 11, gas tank 14, pedestal 15, the breaker mechanism 12 and three-station being arranged on the pedestal 15,
The breaker mechanism 12 realizes the division of the main vacuum interrupter 3 by transmission parts 10.The wherein tool of three-station
Body structure is as described in Example 2.
Wherein, one end of major insulation pull rod 1 is connect with main vacuum interrupter 3, and will be flexible coupling and 2 be pressed on main vacuum extinction
On 3 moved end bar of room；Transmission parts 10 are driven to realize combined floodgate, the separating brake of main vacuum interrupter 3 by the breaker mechanism 12；
It is grounded three position mechanism 13 by the isolation to realize only when isolation switch 5 is in isolated location, is grounded vacuum interrupter 7
Combined floodgate can just be such that earth-return circuit is connected, and the concrete structure of ring main unit is as Figure 2-3.
Following statement is done to the working process and principle of entire ring main unit：
For I, when setting is grounded vacuum interrupter 7, the course of work is as follows：
A, operation isolation division
By operation handle, to the progress of isolation shaft 29, (closing a floodgate, clockwise, separating brake is inverse clockwise or counterclockwise first
Hour hands), the isolation shaft 29 of rotation compresses energy accumulation spring 18, will be by behind the position in be compressed to of energy accumulation spring 18
Energy accumulation spring 18 discharges the stroke of compression to be rotated to drive isolation to hit plate 30.Hitting plate 30 by isolation again drives three position mechanism defeated
Shaft 28 rotates to drive the isolation shaft division of major loop.
B, operational grounding division：(division ground connection vacuum interrupter)
(counterclockwise, separating brake up time of closing a floodgate clockwise or counterclockwise is carried out to ground connection shaft 26 by operation handle
Needle), the ground connection shaft 26 of rotation compresses energy accumulation spring 18, will be by storing up in energy accumulation spring 18 had been compressed to behind position
Energy spring 18 discharges the stroke of compression to be rotated to drive ground connection to hit plate 27.Ground connection hits plate 27 again by arc connecting plate 25, shaft
24 and connecting plate 23 drive final ground connection output revolving shaft 22 to rotate.Ground connection 7 division of vacuum interrupter is driven to realize.
For II, when being not provided with ground connection vacuum interrupter 7, the course of work is as follows：
As Figure 7-8, ground connection vacuum interrupter 7 can choose whether to install as needed, when uneasy attaching vacuum
When arc-chutes 7, will ground connection vacuum interrupter 7 be changed to ground contact seat 21, by be isolated contact knife 5 come realize isolation close, isolation point,
The states such as ground connection conjunction, there are three types of working conditions for isolation switch 5：Contact knife is in isolation "on" position I, contact knife is in isolation separating brake shape
State II and contact knife are in contact of earth state III, as shown in Figure 9.
Isolation ground connection three position mechanism 13 is grounded three position mechanism without installation arc extinguishing room module 20, at this time isolation at this time
13 structure is as Figure 7-8.
A, operation isolation division
Shaft 29 is isolated by operation handle and carries out (closing a floodgate, clockwise, separating brake is counterclockwise) clockwise or counterclockwise,
The isolation shaft 29 of rotation compresses energy accumulation spring 18, will be by energy accumulation spring in energy accumulation spring 18 had been compressed to behind position
18 rotate the stroke release of compression to drive isolation to hit plate 30.Plate 30 is hit by isolation again and drives three position mechanism output shaft 28
Rotation is to drive the isolation switch division of major loop.
B, operational grounding division：(division isolation contact knife)
(counterclockwise, separating brake up time of closing a floodgate clockwise or counterclockwise is carried out to ground connection shaft 26 by operation handle
Needle), the ground connection shaft 26 of rotation compresses energy accumulation spring 18, will be by storing up in energy accumulation spring 18 had been compressed to behind position
Energy spring 18 discharges the stroke of compression to be rotated to drive ground connection to hit plate 27.Plate 27 is hit by ground connection again and drives three position mechanism output
Axis 28 rotates to drive the isolation switch division of major loop.
Figure 10 to the operation principle of the utility model do one it is simple introduce, Figure 10 be from left to right followed successively by ground connection close,
Ground connection point, isolation are closed, major loop closes.There are one insulated tension poles respectively for major loop, earth-return circuit, that is, switch.And major loop
One isolation ground connection three position mechanism 13 is set between earth-return circuit, and the disconnecting link which is grounded three position mechanism 13 can be with
The contact of major loop connects, and can also be connected with the contact of earth-return circuit.As can be seen from the figure when isolation is grounded three station machines
When the disconnecting link of structure 13 is connected with the contact of earth-return circuit, the inevitable contact with major loop separates, that is to say, that major loop is in
Disconnect state, that is, ground connection vacuum interrupter 7 is chain in the presence of priority in logic with isolation switch 5, only when isolation switch 5
When in isolated location, the ground connection combined floodgate of vacuum interrupter 7 can just be such that earth-return circuit is connected.It ensures and is grounded back in logical relation
The reliability on road.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (15)
1. a kind of three-station, which is characterized in that including：It is electrically connected with the main vacuum interrupter (3) in breaker major loop
Static contact (4), be electrically connected with the ground connection vacuum interrupter (7) in earth-return circuit insulating contact (6), isolation switch (5) with
And the driving isolation switch (5), when closing a floodgate with the static contact (4), the master where making the main vacuum interrupter (3) returns
Road is connected, and when closing a floodgate with the insulating contact (6), makes the isolation ground connection three position mechanism (13) of the earth-return circuit conducting.
2. three-station according to claim 1, which is characterized in that the ground connection vacuum interrupter (7) is true in ground connection
It is detachable on empty arc-chutes installation position, when being not provided with ground connection vacuum interrupter (7) on the ground connection vacuum interrupter installation position, institute
It further includes the ground contact seat (21) being electrically connected with the earth-return circuit to state three-station, and the isolation is grounded three position mechanism
(13) it drives the isolation switch (5) when closing a floodgate with the static contact (4), makes the master where the main vacuum interrupter (3)
Circuit is connected；When isolation switch (5) is in isolated location, the major loop and earth-return circuit is made to disconnect；It is touched with the ground connection
When seat (21) closes a floodgate, the earth-return circuit is made to be connected.
3. three-station according to claim 2, which is characterized in that isolation switch (5) setting is in isolation shaft
On, the three position mechanism output shaft (28) of the isolation ground connection three position mechanism (13) by the driving of intermediate transmission structure it is described every
Isolation switch (5) rotation is driven from shaft rotation.
4. three-station according to claim 3, which is characterized in that the isolation ground connection three position mechanism (13) is wrapped
It includes：Shaft (29), three position mechanism output shaft (28), ground connection shaft (26) is isolated in three position mechanism, is arranged in three station
The first transmission mechanism between shaft (29) and the three position mechanism output shaft (28) is isolated in mechanism, and setting turns in the ground connection
The second transmission mechanism on axis (26),
When connecting ground contact seat (21) in the earth-return circuit, the isolation ground connection three position mechanism (13) further includes being arranged in institute
The third transmission mechanism on three position mechanism output shaft (28) is stated, second transmission mechanism coordinates with the third transmission mechanism
Transmission drives three position mechanism output shaft (28) rotation；
When isolation fracture carries out division, three position mechanism isolation shaft (29) clockwise or counterclockwise, by the
One transmission mechanism drives three position mechanism output shaft (28) rotation to drive major loop that shaft division is isolated；
When contact knife division is isolated, the ground connection shaft (26) drives institute clockwise or counterclockwise, by the second transmission mechanism
Stating third transmission mechanism drives three position mechanism output shaft (28) rotation to drive major loop that shaft division is isolated；
Or
In the earth-return circuit when connection ground connection vacuum interrupter (7), the isolation ground connection three position mechanism (13) includes ground connection
Output revolving shaft (22), and fourth driver of the setting between second transmission mechanism and the ground connection output revolving shaft (22)
Structure, second transmission mechanism drive the ground connection output revolving shaft (22) to rotate with the 4th transmission mechanism cooperation transmission；
When isolation fracture carries out division, three position mechanism isolation shaft (29) clockwise or counterclockwise, by the
One transmission mechanism drives three position mechanism output shaft (28) rotation to drive major loop that shaft division is isolated；
When the ground connection vacuum interrupter (7) ground connection division, the ground connection shaft (26) clockwise or counterclockwise, by the
Two transmission mechanisms drive the 4th transmission mechanism to drive ground connection output revolving shaft (22) rotation.
5. three-station according to claim 4, which is characterized in that first transmission mechanism includes that the first elasticity is stored up
Plate (30) is hit in energy structure, the first transmission component, the isolation that can rotate around the axis, and solid with the three position mechanism output shaft (28)
First connecting lever of body one, when division is isolated in the main vacuum interrupter (3), shaft (29) up time is isolated in the three position mechanism
Needle or counterclockwise rotation drive the energy accumulation spring (18) in the first elastic energy storage structure to excessively middle position, position in passing through excessively
Afterwards, then by the energy accumulation spring (18) the first transmission component driving isolation is driven to hit plate (30) rotation, plate is hit in the isolation
(30) first connecting lever is hit to drive three position mechanism output shaft (28) to rotate, to drive major loop isolation shaft point
It closes.
6. three-station according to claim 5, which is characterized in that first connecting lever is equipped with the first roller
(31), the isolation hits plate (30) by hitting first roller (31), drives the first connecting lever rotation.
7. three-station according to claim 6, which is characterized in that it is U-shaped that plate (30) is hit in the isolation, and described first
Roller (31) is in the isolation and hits in the U-shaped cavity of plate (30).
8. according to the three-station described in any one of claim 5-7, which is characterized in that second transmission mechanism includes
Second elastic energy storage structure, the second transmission component, and ground connection hit plate (27)；The ground connection shaft (26) of rotation is by the second bullet
Property energy storing structure in energy accumulation spring (18) be compressed in behind position, the stroke of compression is released through the by the energy accumulation spring (18)
Two transmission components drive the ground connection to hit plate (27) rotation.
9. three-station according to claim 8, which is characterized in that the first elastic energy storage structure and described second
Elastic energy storage structure is that the same elastic energy storage structure is formed, and three position mechanism isolation shaft (29) turns with the ground connection
Axis (26) is divided into the both ends of the energy accumulation spring (18) of the elastic energy storage structure.
10. three-station according to claim 9, which is characterized in that the third transmission mechanism includes being arranged in institute
The second connecting lever on three position mechanism output shaft (28) is stated, the ground connection hits plate (27) rotation and hits the second connecting lever rotation, from
And the three position mechanism output shaft (28) is driven to rotate, realize that shaft division is isolated in major loop.
11. three-station according to claim 10, which is characterized in that second connecting lever is equipped with the second roller
(32), the ground connection hits plate (27) rotation shock second roller (32), drives the rotation of the second connecting lever.
12. three-station according to claim 11, which is characterized in that it is U-shaped that the ground connection hits plate (27), and described the
Two rollers (32) are in the ground connection and hit in the U-shaped cavity of plate (27).
13. three-station according to claim 8, which is characterized in that the 4th transmission mechanism includes crank, connection
Plate (23) is arranged rotating member in shaft (24), arc connecting plate (25), wherein one end of the arc connecting plate (25) with it is described
Ground connection is hit plate (27) and is hinged, and the other end is hinged with the rotating member, and one end of the connecting plate (23) and the rotating member are hinged,
The other end is connect with one end of the crank, and the other end of the crank is connect with the ground connection output revolving shaft (22).
14. according to the three-station described in any one of claim 1-7, which is characterized in that the main vacuum interrupter (3)
It is arranged on insulating support with the ground connection vacuum interrupter (7), the ground connection vacuum interrupter (7) is set to the main vacuum
The lower section of arc-chutes (3), and the axis of the ground connection vacuum interrupter (7) and the axis of the main vacuum interrupter (3) tilt
Setting.
15. three-station according to claim 14, which is characterized in that insulating support adds glass fibre mixed using nylon
The composite material of conjunction is made, or is made of the composite material that plastics add glass fibre to mix.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820230458.XU CN207743142U (en) | 2018-02-09 | 2018-02-09 | A kind of three-station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820230458.XU CN207743142U (en) | 2018-02-09 | 2018-02-09 | A kind of three-station |
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| CN207743142U true CN207743142U (en) | 2018-08-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321001A (en) * | 2018-02-09 | 2018-07-24 | 浙江华仪电器科技有限公司 | A kind of three-station |
| CN109065402A (en) * | 2018-08-30 | 2018-12-21 | 许昌永新电气有限公司 | The outdoor built-in intelligent on-pole switch of one or two fusion isolation knifes |
-
2018
- 2018-02-09 CN CN201820230458.XU patent/CN207743142U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321001A (en) * | 2018-02-09 | 2018-07-24 | 浙江华仪电器科技有限公司 | A kind of three-station |
| CN108321001B (en) * | 2018-02-09 | 2023-11-07 | 浙江华仪电器科技有限公司 | Three-station switch |
| CN109065402A (en) * | 2018-08-30 | 2018-12-21 | 许昌永新电气有限公司 | The outdoor built-in intelligent on-pole switch of one or two fusion isolation knifes |
| CN109065402B (en) * | 2018-08-30 | 2023-12-01 | 许昌豫盛昌电气股份有限公司 | Outdoor secondary fuses built-in intelligent post of isolation sword switch |
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