CN220121737U - Three-position switch, breaker and breaker cabinet - Google Patents
Three-position switch, breaker and breaker cabinet Download PDFInfo
- Publication number
- CN220121737U CN220121737U CN202321334525.XU CN202321334525U CN220121737U CN 220121737 U CN220121737 U CN 220121737U CN 202321334525 U CN202321334525 U CN 202321334525U CN 220121737 U CN220121737 U CN 220121737U
- Authority
- CN
- China
- Prior art keywords
- contact
- knife
- fixed
- position switch
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229920003023 plastic Polymers 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model provides a three-position switch, a circuit breaker and a circuit breaker cabinet, wherein the three-position switch comprises a frame, a first rotating shaft and a circuit component corresponding to each phase, the first rotating shaft is rotatably connected with the frame, and the circuit component comprises: the first fixed contact is fixed on the frame; the second fixed contact is fixed on the frame; the knife is fixed on the first rotating shaft, the first rotating shaft can drive the knife to rotate between the first fixed contact and the second fixed contact, the knife is used for connecting a vacuum arc-extinguishing chamber, and the vacuum arc-extinguishing chamber can realize switching-on in the first direction; the first static contact is located above the vacuum arc-extinguishing chamber and extends along a second direction, the second direction is perpendicular to the first direction, and the contact position of the first static contact and the knife exceeds the corresponding boundary of the vacuum arc-extinguishing chamber in the first direction.
Description
Technical Field
The utility model relates to the field of switch cabinets, in particular to a three-station switch, a breaker and a breaker cabinet.
Background
The gas insulated switchgear (Gas Insulated Switchgear, GIS) comprises a ring network feeder cabinet, a circuit breaker cabinet and the like. The breaker cabinet comprises a vacuum arc-extinguishing chamber in an air box, a three-station isolating switch and related operating mechanisms.
The circuit breaker cabinet has been developed to be miniaturized, and the height of the gas tank is also small in order to save space. To accommodate such smaller gas boxes, the internal vacuum interrupter and disconnector thereof need to be redesigned.
Disclosure of Invention
In view of this, the present utility model provides a three-position switch including a frame, a first rotation shaft rotatably connected to the frame, and a circuit assembly corresponding to each phase, the circuit assembly including:
a first stationary contact fixed to the frame;
a second stationary contact fixed to the frame;
the knife is fixed on the first rotating shaft, the first rotating shaft can drive the knife to rotate between the first fixed contact and the second fixed contact, the knife is used for being connected with a vacuum arc-extinguishing chamber, and the vacuum arc-extinguishing chamber can realize switching-on in a first direction;
the first fixed contact is positioned above the vacuum arc-extinguishing chamber and extends along a second direction, the second direction is perpendicular to the first direction, and the contact position of the first fixed contact and the knife exceeds the corresponding boundary of the vacuum arc-extinguishing chamber in the first direction.
Through setting up the top at vacuum interrupter with first stationary contact and make the position of first stationary contact and sword contact surpass the boundary that vacuum interrupter corresponds in first direction, can save the space of gas tank in first direction like this, make it satisfy the miniaturized demand of gas tank.
According to the three-position switch, optionally, in a case that the first fixed contact is in contact with the knife, the knife forms an acute angle with the first direction. Such an angle enables the air box to meet the demand for miniaturization in both the height and width directions.
According to the three-position switch as described above, optionally, the vacuum interrupter includes an insulating housing, an upper stationary contact and a lower movable contact, the upper stationary contact has a conductive connecting member, the knife is rotatably connected to the conductive connecting member, and an extending direction of the conductive connecting member is a second direction. The connecting mode is simple in structure, easy to realize and low in cost.
According to the three-position switch as described above, optionally, the knife is connected to the conductive connection at a position beyond a corresponding boundary of the insulating housing in the first direction. Thus, the length of the knife can be shortened as much as possible, and the rotation of the knife is facilitated.
According to the three-position switch as described above, optionally, the circuit assembly further comprises: and the buffer piece is fixed on the frame and can contact the knife in the process of contacting the knife with the second fixed contact.
According to the three-position switch, optionally, the knife comprises two blades, the two blades are arranged in parallel, the first fixed contact is provided with a protruding plate, and the protruding plate can be inserted between the two blades to realize closing; and/or
The knife comprises two blades which are arranged in parallel, the second fixed contact is L-shaped, and the second fixed contact can be inserted between the two blades to realize closing.
The structure is simple, convenient to realize and low in cost.
According to the three-position switch as described above, optionally, the circuit assembly further comprises: and the bus bar is abutted against the first fixed contact and extends along the second direction.
According to the three-position switch, optionally, the first rotating shaft is a plastic piece, so that the motion can be transmitted, the function of insulating and supporting can be achieved, the weight of the three-position switch can be reduced, and the weight of the whole switch cabinet can be further reduced; or the second fixed contact is fixed on the frame and positioned at the side of the vacuum arc-extinguishing chamber.
The utility model also provides a circuit breaker for the circuit breaker cabinet, which comprises the three-station switch and the vacuum arc-extinguishing chamber.
The utility model further provides a breaker cabinet comprising the three-position switch.
Drawings
The above and other features and advantages of the present utility model will become more apparent to those of ordinary skill in the art by describing in detail preferred embodiments thereof with reference to the attached drawings in which:
fig. 1 is a schematic view of a part of a three-position switch according to the present utility model at an angle.
Fig. 2 is a schematic view of a part of a three-position switch according to the present utility model at another angle.
Fig. 3 is a schematic structural view of a first stationary contact, a knife and a vacuum interrupter of a three-position switch according to the present utility model.
Wherein, the reference numerals are as follows:
1-frame
11-Plastic rod
2-first rotation axis
31-first stationary contact
311-projecting plate
312-mounting hole
32-second static contact
33-knife
331-blade
34-cushioning member
4-vacuum arc-extinguishing chamber
41-insulating housing
42-upper static contact
43-lower moving contact
5-operating mechanism
6-conductive connector
D1-first direction
D2-second direction
Detailed Description
The present utility model will be further described in detail with reference to the following examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. Nouns and pronouns for humans in this patent application are not limited to a particular gender.
The utility model provides a three-position switch, which comprises a three-position switchIs arranged in the air box. The gas box is filled with insulating gas such as environment-friendly gas or SF 6 。
As shown in fig. 1 and 3, schematic views of three-position switches at different angles are shown. Fig. 1 shows a schematic view of a three-position switch in a switching-off position, and fig. 3 shows a schematic view of a three-position switch in a switching-on position, for example in an isolating switching-on position. The three-position switch includes a frame 1, a first rotating shaft 2, and a circuit assembly corresponding to each phase. The first rotation shaft 2 is rotatably connected to the frame 1. The first axis of rotation 2 is shown in fig. 1 as three phases, and accordingly the circuit assembly is also three phases. The circuit assembly comprises a first fixed contact 31, a second fixed contact 32 and a knife 33.
For the frame 1, a metal material such as steel, aluminum alloy, or the like may be used for a structure requiring electric conduction thereof; for structures that do not require electrical conduction, a lighter insulating material, such as engineering plastic, may be used. The setting can be specifically performed according to actual needs, and will not be described herein.
The first stationary contact 31 and the second stationary contact 32 are both fixed to the frame 1. Fig. 1 and 2 show 3 first stationary contacts 31, each of which is fixed to one plastic rod 11 of the frame 1. Likewise, fig. 1 and 2 show 3 second stationary contacts 32, which may each be fixed to the same plate (not shown) of the frame 1.
The first rotating shaft 2 can rotate along the axis thereof, and is connected to the frame 1 in various manners, for example, the first rotating shaft 2 penetrates through the frame 1, so that the first rotating shaft 2 can rotate in the frame 1; or the first rotation shaft 2 is connected to the frame 1 through a shaft sleeve. There are many specific implementations, and they are not described in detail herein.
The knife 33 is fixed on the first rotating shaft 2, the first rotating shaft 2 can drive the knife 33 to rotate between the first fixed contact 31 and the second fixed contact 32, the knife 33 is used for connecting the vacuum arc-extinguishing chamber 4, and the vacuum arc-extinguishing chamber 4 can realize switching-on in the first direction D1. Accordingly, the vacuum interrupter 4 realizes opening in a direction opposite to the first direction D1. As an exemplary illustration, the first stationary contact 31 is an isolating contact, the knife 33 contacts the first stationary contact 31 in place, i.e. the isolating switch is in place, the second stationary contact 32 is a grounding contact, and the knife 33 contacts the second stationary contact 32 in place, i.e. the grounding switch is in place. Fig. 1 is a schematic view of the knife 33 in the opening position, and fig. 3 is a schematic view of the knife 33 contacting the first stationary contact 31, i.e. a schematic view of the closing in place.
The vacuum interrupter 4 here is part of a vacuum circuit breaker, the operating mechanism 5 of which is located outside the gas box, as shown in fig. 1 and 2. The vacuum interrupter 4 includes an insulating housing 41, an upper fixed contact 42 and a lower movable contact 43, wherein contact blades (not shown in the drawings) of the upper fixed contact 42 and the lower movable contact 43 are all located in the insulating housing 41, one end of a contact rod of the upper fixed contact 42 extends from one end of the insulating housing 41, one end of a contact rod of the lower movable contact 43 extends from the other end of the insulating housing 41, and the lower movable contact 43 can move in a first direction D1 and a direction opposite to the first direction D1, so that the contact blade of the lower movable contact 43 is contacted with or separated from the contact blade of the upper fixed contact 42, and opening and closing are realized. The relationship between the opening and closing of the vacuum interrupter 4 and the opening and closing of the three-position switch is consistent with the prior art, and will not be described herein.
The first stationary contact 31 is located above the vacuum interrupter 4 and the first stationary contact 31 extends along a first direction D2, the first direction D2 is perpendicular to the first direction D1, and a contact position of the first stationary contact 31 with the knife 33 exceeds a corresponding boundary of the insulating housing 41 of the vacuum interrupter 4 in the first direction D1. Fig. 3 shows the boundary of the vacuum interrupter 4 in the first direction D1, i.e. the two dashed lines L. As can be seen from fig. 3, the position of the first stationary contact 31 in contact with the knife 33 exceeds the left broken line L, i.e. in the case of the first stationary contact 31 in contact with the knife 33, the first stationary contact 31, the knife 33 and the vacuum interrupter 4 form an "S" shape, which allows space saving in the first direction D1, i.e. the height direction of the gas box.
It should be noted that fig. 1 to 3 only show the case that the knife 33 is on one side of the vacuum interrupter 4, and in practical application, the knife 33 may be located on the other side of the vacuum interrupter 4, and may be specifically set according to actual needs, which is not described herein.
As an exemplary illustration, in the case where the first stationary contact 31 is in contact with the blade 33, the blade 33 makes an acute angle with the first direction D1. Such an angle enables the air box to meet the demand for miniaturization in both the height and width directions.
Optionally, the second stationary contact 32 is fixed to the frame 1 and located laterally of the vacuum interrupter 4, i.e. the path of movement of the knife 33 does not pass through the vacuum interrupter 4, so that the vacuum interrupter 4 does not hinder the movement of the knife 33. For example, the position where the blade 33 contacts the first stationary contact 31 and the position where the blade 33 contacts the second stationary contact 32 are located on the same side of the vacuum interrupter 4. Optionally, the circuit assembly further comprises a buffer 34, the buffer 34 being fixed to the frame 1 and the buffer 34 being able to play a buffering role during the contact of the blade 33 with the second stationary contact 32. The buffer member 34 is, for example, a rubber pad, and the knife 33 can contact the buffer member 34 to buffer during the process of approaching the knife 33 to the second stationary contact 32.
In the utility model, the first fixed contact 31 is arranged above the vacuum arc-extinguishing chamber 4, and the contact position of the first fixed contact 31 and the knife 33 exceeds the corresponding boundary of the vacuum arc-extinguishing chamber 4 in the first direction D1, so that the space of the air box in the first direction D1 can be saved, and the requirement of miniaturization of the air box can be met.
Optionally, the upper stationary contact 42 has a conductive connecting member 6, the blade 33 is rotatably connected to the conductive connecting member 6, and the conductive connecting member 6 extends in the first direction D2. As an exemplary illustration, the conductive connection 6 is a metal plate that extends along the first direction D2. The conductive connector 6 may be bolted to the upper stationary contact 42 at one end of the insulating housing 41 with contact bars extending therefrom. The connecting mode is simple in structure, easy to realize and low in cost. In the case of a conductive connection piece 6 as part of the vacuum interrupter 4 and having a length in the second direction D2 that is greater than the insulating housing 41, the end of the portion of the conductive connection piece 6 that extends beyond the insulating housing 41 can also act as a boundary of the vacuum interrupter 4 in the first direction D1.
Alternatively, the knife 33 is connected to the conductive connector 6 beyond the corresponding boundary of the insulating housing 41 in the first direction D1, as shown in fig. 3. In this way, the length of the blade 33 can be reduced as much as possible, and the rotation of the blade 33 is facilitated.
Optionally, the knife 33 includes two blades 331, the two blades 331 are disposed in parallel, the first stationary contact 31 has a protruding plate 311, and the protruding plate 311 can be inserted between the two blades 331 to implement switching. I.e. the blade 331 is able to clamp the protruding plate 311 to achieve an electrically conductive connection between the blade 33 and the first stationary contact 31. The structure is simple, convenient to realize and low in cost.
Optionally, the knife 33 includes two blades 331, the two blades 331 are arranged in parallel, the second fixed contact 32 is L-shaped, and the second fixed contact 32 can be inserted between the two blades 331 to realize switching-on. As can be seen from fig. 2, the side of the second stationary contact 32 facing the first stationary contact 31 can be inserted between the two blades 331 of the knife 33, i.e. sandwiched by the two blades 331, to achieve a ground closing. The structure is simple, convenient to realize and low in cost.
Optionally, the circuit assembly further comprises a busbar (not shown in the figures) which abuts against the first stationary contact 31 and extends along the first direction D2. Specifically, the bus bar is disposed above the first stationary contact 31, and the bus bar is used for connection with a sleeve disposed on the air box. As an exemplary illustration, the first stationary contact 31 is stepped along the first direction D2, and the end of the first stationary contact 31 remote from the vacuum interrupter 4 has a mounting hole 312 for fixing the bus bar, for example, by a bolt passing through the bus bar and the mounting hole 312 to fix the bus bar to the first stationary contact 31.
Optionally, the first rotating shaft 2 is a plastic part, so that the motion can be transmitted, the insulating support function is realized, the weight of the three-position switch can be reduced, and the whole weight of the switch cabinet can be further reduced.
The utility model also provides a circuit breaker for a circuit breaker cabinet, the three-position circuit breaker comprising a three-position switch according to any one of the preceding claims and a vacuum interrupter 4.
The utility model also provides a breaker cabinet comprising the three-position switch of any one of the above.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. Three-position switch comprising a frame (1), a first rotation axis (2) and a circuit assembly corresponding to each phase, said first rotation axis (2) being rotatably connected to said frame (1), said circuit assembly comprising:
a first stationary contact (31) fixed to the frame (1);
a second stationary contact (32) fixed to the frame (1);
the knife (33) is fixed on the first rotating shaft (2), the first rotating shaft (2) can drive the knife (33) to rotate between the first fixed contact (31) and the second fixed contact (32), the knife (33) is used for being connected with a vacuum arc-extinguishing chamber (4), and the vacuum arc-extinguishing chamber (4) can realize switching-on in a first direction (D1);
it is characterized in that the method comprises the steps of,
the first fixed contact (31) is located above the vacuum arc-extinguishing chamber (4) and the first fixed contact (31) extends along a second direction (D2), the second direction (D2) is perpendicular to the first direction (D1), and the contact position of the first fixed contact (31) and the knife (33) exceeds the corresponding boundary of the vacuum arc-extinguishing chamber (4) in the first direction (D1).
2. Three-position switch according to claim 1, characterized in that the knife (33) is at an acute angle to the first direction (D1) in the case of contact of the first stationary contact (31) with the knife (33).
3. Three-position switch according to claim 1, characterized in that the vacuum interrupter (4) comprises an insulating housing (41), an upper stationary contact (42) and a lower movable contact (43), the upper stationary contact (42) having a conductive connection (6), the knife (33) being rotatably connected to the conductive connection (6), the conductive connection (6) extending in a second direction (D2).
4. A three-position switch according to claim 3, characterized in that the position of the connection of the blade (33) with the conductive connection (6) is beyond the corresponding boundary of the insulating housing (41) in the first direction (D1).
5. The three-position switch of claim 1, wherein the circuit assembly further comprises:
and the buffer piece (34) is fixed on the frame (1), and the buffer piece (34) can contact the knife (33) in the process that the knife (33) is contacted with the second fixed contact (32).
6. Three-position switch according to claim 1, characterized in that said knife (33) comprises two blades (331), said two blades (331) being arranged in parallel, said first stationary contact (31) having a protruding plate (311), said protruding plate (311) being insertable between two of said blades (331) for closing a switch; and/or
The knife (33) comprises two blades (331), the two blades (331) are arranged in parallel, the second fixed contact (32) is L-shaped, and the second fixed contact (32) can be inserted between the two blades (331) to realize closing.
7. The three-position switch of claim 1, wherein the circuit assembly further comprises:
and a busbar which is abutted against the first stationary contact (31) and extends along the second direction (D2).
8. Three-position switch according to any one of claims 1 to 7, characterized in that the first rotation shaft (2) is a plastic piece; or alternatively
The second fixed contact (32) is fixed on the frame (1) and is positioned at the side of the vacuum arc-extinguishing chamber (4).
9. Circuit breaker for a circuit breaker cabinet, characterized in that it comprises a three-position switch according to any one of claims 1-8 and the vacuum interrupter (4).
10. A circuit breaker cabinet comprising a three-position switch according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321334525.XU CN220121737U (en) | 2023-05-29 | 2023-05-29 | Three-position switch, breaker and breaker cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321334525.XU CN220121737U (en) | 2023-05-29 | 2023-05-29 | Three-position switch, breaker and breaker cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220121737U true CN220121737U (en) | 2023-12-01 |
Family
ID=88892247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321334525.XU Active CN220121737U (en) | 2023-05-29 | 2023-05-29 | Three-position switch, breaker and breaker cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220121737U (en) |
-
2023
- 2023-05-29 CN CN202321334525.XU patent/CN220121737U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101463374B1 (en) | A switching device and a switchgear | |
| KR101562482B1 (en) | A switching device and a switchgear | |
| KR100846223B1 (en) | Medium Voltage Switch-gear | |
| CN110998773B (en) | Circuit breaker for gas-insulated switchgear | |
| CN220121737U (en) | Three-position switch, breaker and breaker cabinet | |
| AU2018310636B2 (en) | Disconnector pole for gas insulated switchgear | |
| CN103282991B (en) | A kind of switchgear and switching device | |
| JPH11162303A (en) | Switch gear | |
| US5696364A (en) | Combined interrupter disconnect switch blade for high voltage switch | |
| CN111933478A (en) | Circuit breaker insulation device with isolating switch | |
| CN213906094U (en) | Circuit breaker and isolator's combined mechanism | |
| EP1965476A1 (en) | Combined breaker and disconnector assembly in fixed type electrical switchgear | |
| US3751617A (en) | Vacuum type circuit breaker | |
| JP2009164001A (en) | Switching device | |
| CN219626534U (en) | Vacuum circuit breaker with isolating switch for environment-friendly cabinet | |
| JP2000350318A (en) | Gas insulated grounding switchgear | |
| CN117060258A (en) | Method for assembling a switching device for a medium voltage power system | |
| CN115020147A (en) | Transmission mechanism for circuit breaker and related electrical equipment | |
| CN117238711A (en) | Electrical switching apparatus and gas-filled cabinet | |
| JP2000260267A (en) | Gas-insulated switch | |
| JPH0681374B2 (en) | Gas insulated switch | |
| JPH11164425A (en) | Switching gear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |