CN217281852U - Star-delta switching inflatable cabinet - Google Patents
Star-delta switching inflatable cabinet Download PDFInfo
- Publication number
- CN217281852U CN217281852U CN202221068661.4U CN202221068661U CN217281852U CN 217281852 U CN217281852 U CN 217281852U CN 202221068661 U CN202221068661 U CN 202221068661U CN 217281852 U CN217281852 U CN 217281852U
- Authority
- CN
- China
- Prior art keywords
- air chamber
- chamber
- star
- cabinet
- cabinet body
- 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
Images
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
The utility model discloses a star-delta switching aerifys cabinet, including the cabinet body, isolator 1G, isolator 2G, first play interior cone socket of line, second are qualified for the next round of competitions interior cone socket and contact and use the sleeve pipe, the internal portion of cabinet is separated by the baffle for last air chamber, lower air chamber, cable chamber, instrument room, mechanism room and the back cabinet body. The lower air chamber is positioned right above the cable chamber, the rear cabinet body and the upper air chamber are arranged above the lower air chamber, the mechanism chamber is positioned on the side surfaces of the upper air chamber and the lower air chamber, and the instrument chamber is positioned above the mechanism chamber; the isolating switch 1G and the isolating switch 2G are respectively arranged in the upper air chamber and the lower air chamber; the first outgoing line inner cone socket, the second outgoing line inner cone socket and the communication bushing are all arranged in the lower air chamber. The utility model discloses switchgear compact structure, flexible operation, use and overhaul safety.
Description
Technical Field
The utility model belongs to the technical field of high-voltage electrical equipment, concretely relates to box gas-insulated metal enclosed switchgear is applicable to in the distribution system that next grade load needs star-delta switching function.
Background
In order to ensure that the high-power motor is not influenced by instant impact current during operation, reduce the starting current of the high-power motor and reduce the impact on a power grid, a star-delta cabinet is usually adopted to start the high-power motor;
the primary side of a general electric furnace transformer has two wiring modes: the connecting rods can be connected into a star shape or an angle shape. Generally, a change-over switch is used for changing over the wiring mode, an angular wiring is adopted when large current is needed, and a star wiring is adopted when small current is needed.
The traditional scheme for switching between star connection mode and delta connection mode is to use an air cabinet, the air cabinet has large volume and large floor area, and the external dimension of the traditional KYN61-40.5 cabinet is 1400x2800x2600mm (width x depth x height).
Disclosure of Invention
The utility model provides a star-delta switching aerifys cabinet has reduced the volume of switching cabinet, realizes the conversion of the star type (Y connection) and the angle type (delta connection) of next grade load.
In order to achieve the purpose, the star-delta switching inflatable cabinet comprises a cabinet body, an isolating switch 1G, an isolating switch 2G, a first outgoing line inner cone socket, a second outgoing line inner cone socket and a sleeve for communication, wherein the inside of the cabinet body is divided into an upper air chamber, a lower air chamber, a cable chamber, an instrument chamber, a mechanism chamber and a rear cabinet body; wherein, the lower air chamber is positioned right above the cable chamber, the rear cabinet body and the upper air chamber are arranged above the lower air chamber, the mechanism chamber is positioned on the side surfaces of the upper air chamber and the lower air chamber, and the instrumentThe watch chamber is positioned above the mechanism chamber; the upper and lower chambers are filled with SF 6 The isolating switch 1G and the isolating switch 2G are respectively arranged in the upper air chamber and the lower air chamber; the first outgoing line inner cone socket, the second outgoing line inner cone socket and the communication bushing are all arranged in the lower air chamber.
Further, the operating mechanisms of the disconnecting switch 1G and the disconnecting switch 2G are electrically interlocked.
Further, the operating mechanisms of the disconnecting switch 1G and the disconnecting switch 2G are mechanically interlocked.
Further, the disconnecting switch 1G and the disconnecting switch 2G are connected through an insulator.
Further, the operation mechanisms of the disconnecting switch 1G and the disconnecting switch 2G are both provided in the mechanism chamber.
Furthermore, a rear cover plate of the rear cabinet body is bolted on the rear side plate, and a pressure relief cover plate is arranged on the upper part of the rear cover plate.
Furthermore, a window is arranged on the cabinet door of the cabinet body.
Further, the cabinet body is made of an aluminum-zinc coated steel plate.
Compared with the prior art, the utility model discloses following profitable technological effect has at least:
1. the upper air chamber and the lower air chamber of the utility model are filled with SF 6 The insulating distance of the electric elements in the cabinet body is shortened, the size of the cabinet body can be reduced, and the isolating switch 1G and the isolating switch 2G are arranged up and down, so that the size of the cabinet body is further reduced.
2. The single cabinet realizes a star-delta conversion function, the isolation switch 1G operating mechanism and the isolation switch 2G operating mechanism are electrically locked to realize forward and reverse locking, the isolation switch 2G isolation switch operating mechanism cannot be operated when the isolation switch 1G is switched on, and the isolation switch 2G isolation switch operating mechanism can be operated to realize switching on only when the isolation switch 1G is switched off; the isolating switch 1G and the isolating switch 2G realize a mechanical interlocking function, and the isolating switch 1G and the isolating switch 2G are ensured to be only combined into one;
3. when the isolating switch 1G is switched on and the isolating switch 2G is switched off, Z, X, Y is in short circuit, and the star-delta switching cabinet A-Z, B-X, C-Y is connected to the next-stage transformer in star connection. And the isolating switch 2G is switched on, and the isolating switch 1G is switched off. The star-delta switching cabinet A-Z, B-X, C-Y is connected to the next stage of transformer in a delta connection mode.
4. The rear cabinet is characterized in that a pressure relief cover plate is arranged above the rear cover plate of the rear cabinet body and connected to the rear cover plate through a nylon screw, if a fault occurs in the cabinet, impact force generated by generated air waves passes through the pressure relief channel, the pressure relief cover plate of the rear cabinet body is opened, and the air waves can be discharged out of the cabinet from the top.
5. The cabinet body is made of high-quality aluminum-zinc coated steel plates, a bending assembly type structure is adopted, and the plates are processed by numerical control equipment to ensure the material precision, so that the high precision of the cabinet body is achieved.
Drawings
FIG. 1 is a front view of the 35kV star-delta conversion inflatable cabinet in the working state;
FIG. 2 is a left side view of the structure of the 35kV star-delta conversion gas-filled cabinet of the present invention in the working state;
fig. 3 is the structural bottom view of the 35kV star-delta conversion gas-filled cabinet in working state.
Fig. 4 is a primary system diagram of the star-delta switching high-voltage switchgear of the present invention;
FIG. 5 is an electrical wiring diagram of the star-delta switching high voltage switchgear of the present invention;
wherein: 1. a cabinet body; 2. an isolator switch 1G; 3. an isolator switch 2G; 4. a first outlet cone socket; 5. a second outlet cone socket; 6. an outer cone sleeve for communication; 7. a window; 10. an upper air chamber; 20. a lower air chamber; 30. a cable chamber; 40. an instrument room; 50. a mechanism chamber; 60 a rear cabinet body; 100. a communication pipe bus; 200. a bus bar;
a, B, C, Z, X, Y is a cable connection interface.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used herein, the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 3, a star-delta switching inflatable cabinet comprises a cabinet body 1, an isolating switch 1G2, an isolating switch 2G 3, a first outgoing line inner cone socket 4, a second outgoing line inner cone socket 5 and a sleeve 6 for communication. The cabinet body 1 is made of high-quality aluminum-zinc coated steel plates and adopts a bending assembly type structure, namely, the side plates of the cabinet body are bolted together by using screws by adopting an aluminum-zinc coated steel plate double-bending process, and the plates are processed by numerical control equipment to ensure the material precision, so that the high precision of the cabinet body is achieved, and the overall dimension of the cabinet body is the width multiplied by the depth multiplied by the height of 800 multiplied by 1650 multiplied by 2450. A window 7 is arranged on the left side door of the cabinet body 1. The first outlet cone socket 4 comprises Z, X, Y outlet cone sockets, and the second outlet cone socket 5 comprises A, B, C outlet cone sockets.
The cabinet 1 is divided into an upper air chamber 10, a lower air chamber 20, a cable chamber 30, an instrument chamber 40, a mechanism chamber 50 and a rear cabinet 60 by partition plates. The lower air chamber 20 is located right above the cable chamber 30, the rear cabinet body and the upper air chamber 10 are located above the lower air chamber, the mechanism chamber 50 is located on the side face of the upper air chamber 10 and the side face of the lower air chamber 20, and the instrument chamber is located right above the mechanism chamber. The upper and lower chambers 10 and 20 are filled with SF 6 。
The isolator 1G2 is provided in the upper air chamber 10, the isolator 2G 3 is provided in the lower air chamber 20, and the isolator 1G and the isolator 2G are symmetrically arranged with respect to a partition between the upper air chamber 10 and the lower air chamber. Isolator 1G closes the floodgate and constitutes star type connection, and isolator 2G closes the floodgate and constitutes the angle type and connects. The lower air chamber 20 is also provided with a contact busbar and three groups of connecting insulators, and the contact busbar is used for connecting the inner cone socket 5 and the contact bushing 6 to the static contact seat of the isolating switch 2G.
Each group comprises three insulators, wherein one group is an external taper sleeve 6 for communication, the other group is a first internal taper socket 4 for outgoing lines, and the other group is a second internal taper socket 5 for outgoing lines. The first outlet inner cone socket 4 and the second outlet inner cone socket 5 are cable interfaces of A, B, C and Z, X, Y, and the cable interfaces are connected with a next-stage transformer through cables. When the transformer is connected with the next-stage transformer, the inner cone socket A and the inner cone socket Z form a group of wiring ports, the inner cone socket B and the inner cone socket X form a group of wiring ports, and the inner cone socket C and the inner cone socket Y form a group of wiring ports. When the disconnector 1G is switched on, the neutral point is switched on and the connection to the next transformer is star-connected ("Y" connection), and when the disconnector 2G is switched on, the connection to the next transformer is angle-connected ("Δ" connection). When conversion is needed, only one side of the star-delta conversion cabinet is needed to be arranged on the cabinet, the star-delta conversion function can be realized through local operation or remote operation through a control system, the operation is flexible, and the use and the maintenance are very safe.
The cable chamber 30 is used for installing cables, installing current transformers and the like.
The instrument room 40 is used for mounting secondary elements and control and protection circuits and the like.
The mechanism chamber 50 houses an operating mechanism of the disconnector 1G and the disconnector 2G. The two control mechanisms adopt mechanical and electrical interlocking, can reliably realize forward and reverse mechanical and electrical locking between the two isolating switch mechanisms, can only close one isolating switch, and has complete and complete five-prevention locking function so as to prevent the occurrence of ground faults.
Referring to fig. 4 and 5, a feeder cabinet is used in cooperation with the star-delta switch cabinet, a circuit breaker in the feeder cabinet is QF, and the feeder cabinet is a sectional circuit breaker scheme and is used for switching on and off a power supply. The bus bar 200 is connected with the inner cone socket A, the inner cone socket B, the inner cone socket C and the isolating switch 2G through the lower connecting pipe bus 100 and the bus bar 200 in the star-delta conversion cabinet.
The communication outer taper sleeve comprises an C, F type equal sleeve.
The inner cone sockets comprise 2#, 3#, 4# and other inner cone sockets. The high-voltage loop is positioned in the upper air chamber and the lower air chamber and is not influenced by the external environment, so that the bus loop can safely supply power for the high-voltage loop.
The rear cabinet body 60 is used as a pressure relief channel, a rear cover plate of the rear cabinet body 60 is arranged on a rear side plate of the cabinet body 1 through bolts, and a pressure relief cover plate is arranged on the upper portion of the rear cover plate. The cabinet body 1 is provided with an air leakage opening right above the rear cabinet body 60, and the pressure relief cover plate is positioned on the air leakage opening. If some faults occur in the cabinet, a strong blast can be generated, and the blast rushes one side of the pressure relief cover plate through the pressure relief channel, so that the blast can be discharged out of the cabinet from the top without influencing the functions of other parts.
The cabinet body structure of the utility model meets the protection grade IP4X of the case type gas insulated metal enclosed switchgear shell and the protection grade IP67 of the gas case; the structure is compact, the appearance is consistent with that of the conventional scheme, cabinet combination is convenient, and special treatment is not needed on site;
the term "consisting of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.
A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the pending claims along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of the subject matter that is disclosed herein is not intended to forego such subject matter, nor should the applicants be construed as having contemplated such subject matter as being part of the disclosed subject matter.
Claims (8)
1. A star-delta switching inflatable cabinet is characterized by comprising a cabinet body (1), an isolating switch 1G (2), an isolating switch 2G (3), a first outgoing line inner cone socket (4), a second outgoing line inner cone socket (5) and a sleeve (6) for communication, wherein the interior of the cabinet body (1) is divided into an upper air chamber (10), a lower air chamber (20), a cable chamber (30), an instrument chamber (40), a mechanism chamber (50) and a rear cabinet body (60); the lower air chamber (20) is positioned above the cable chamber (30), the rear cabinet body (60) and the upper air chamber (10) are arranged above the lower air chamber, the mechanism chamber (50) is positioned on the side surfaces of the upper air chamber (10) and the lower air chamber (20), and the instrument chamber (40) is positioned above the mechanism chamber (50);
the upper air chamber (10) and the lower air chamber (20) are filled with SF 6 The isolating switch 1G (2) and the isolating switch 2G (3) are respectively arranged in the upper air chamber (10) and the lower air chamber (20); the first outgoing line inner cone socket (4), the second outgoing line inner cone socket (5) and the contact bushing (6) are all arranged in the lower air chamber (20).
2. The star-delta switching gas-filled cabinet according to claim 1, wherein the operating mechanisms of the isolating switch 1G (2) and the isolating switch 2G (3) are electrically interlocked.
3. The star-delta switching gas-filled cabinet according to claim 1 or 2, wherein the operating mechanisms of the disconnecting switch 1G (2) and the disconnecting switch 2G (3) are mechanically interlocked.
4. The star-delta switching gas-filled cabinet according to claim 1, wherein the isolating switch 1G (2) and the isolating switch 2G (3) are connected through an insulator.
5. The star-delta switching gas-filled cabinet according to claim 1, wherein the operating mechanisms of the disconnecting switch 1G (2) and the disconnecting switch 2G (3) are arranged in a mechanism chamber (50).
6. The star-delta switching inflatable cabinet according to claim 1, wherein a rear cover plate of the rear cabinet body (60) is bolted to a rear side plate of the cabinet body (1), and a pressure relief cover plate is installed at the upper part of the rear cover plate.
7. The star-delta switching inflatable cabinet as claimed in claim 1, wherein a window (7) is provided on the cabinet door of the cabinet body (1).
8. The star-delta switching inflatable cabinet according to claim 1, wherein the cabinet body (1) is made of aluminum-zinc-coated steel plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221068661.4U CN217281852U (en) | 2022-05-06 | 2022-05-06 | Star-delta switching inflatable cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221068661.4U CN217281852U (en) | 2022-05-06 | 2022-05-06 | Star-delta switching inflatable cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217281852U true CN217281852U (en) | 2022-08-23 |
Family
ID=82880085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221068661.4U Active CN217281852U (en) | 2022-05-06 | 2022-05-06 | Star-delta switching inflatable cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217281852U (en) |
-
2022
- 2022-05-06 CN CN202221068661.4U patent/CN217281852U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202050184U (en) | Inflating type high-voltage modularized vacuum circuit breaker cabinet | |
| CN201994576U (en) | Double-bus bar fixed metallic enclosed switching device | |
| CN217281852U (en) | Star-delta switching inflatable cabinet | |
| CN204835350U (en) | Epoxy resin cast solid insulation cubical switchboard | |
| MY108964A (en) | Metal-enclosed type switchgear | |
| CN114156763B (en) | Economical switchgear suitable for wind power | |
| CN216215412U (en) | Three-phase box-shared GIS device | |
| CN214707025U (en) | Bushing for a switchgear cabinet and switchgear cabinet | |
| CN214069113U (en) | Miniaturized power distribution device | |
| CN2489455Y (en) | Double layer switch equipment and double bus switch equipment | |
| CN201319346Y (en) | SF* composite type high-voltage combined electric appliance | |
| CN2489500Y (en) | High voltage switch cabinet | |
| CN217882570U (en) | Inflatable cabinet structure | |
| CN220775186U (en) | Gas-insulated metal-enclosed switchgear of bus and isolating switch gas-dividing chamber | |
| CN218334992U (en) | 10kVGIS switch cabinet | |
| US11784015B2 (en) | Switch-fuse module | |
| CN214590183U (en) | Solid insulation switch cabinet | |
| CN219677927U (en) | Side-out structure of inflatable cabinet | |
| CN217768203U (en) | Three-station isolation grounding switch | |
| CN218334991U (en) | Gas insulation boundary switch cabinet and metering device | |
| CN211405065U (en) | Separated high-voltage switch cabinet | |
| CN217720481U (en) | Small-size modularization inflatable circuit breaker cabinet | |
| CN214673878U (en) | Compact 35kV prepackage type transformer substation high-voltage combined electrical apparatus device | |
| CN117955005A (en) | GIS reservation interval and GIS equipment | |
| US11749976B2 (en) | Switch-fuse module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |