CN216625098U - Environment-friendly gas-insulated intelligent boundary inflatable switch cabinet - Google Patents

Abstract

The utility model discloses an environment-friendly gas-insulated intelligent demarcation inflation switch cabinet which comprises a cabinet body and a gas box, wherein the gas box comprises a sealed inlet high-pressure gas box and a sealed outlet high-pressure gas box, a load switch pole column and an isolating switch are arranged in the inlet high-pressure gas box, a breaker pole column is arranged in the outlet high-pressure gas box, side expansion sockets are arranged on the side walls of the inlet high-pressure gas box and the outlet high-pressure gas box, a bus is electrically connected between the side expansion sockets, the isolating switch and the breaker pole column are electrically connected with the bus, the cabinet body comprises a sealed voltage PT chamber, a voltage transformer for secondary power supply is arranged in the voltage PT chamber, insulating gas is sealed in the inlet high-pressure gas box, the outlet high-pressure gas box and the voltage PT chamber, and the inlet high-pressure gas box, the outlet high-pressure gas box and the voltage PT chamber are provided with mutually independent pressure relief channels. The utility model provides an all-insulated intelligent demarcation switch, which improves the universality of a demarcation switch unit and reduces the production cost.

Description

Environment-friendly gas-insulated intelligent boundary inflatable switch cabinet

Technical Field

The utility model relates to an environment-friendly gas-insulated intelligent boundary inflating switch cabinet, and belongs to the technical field of boundary switch cabinets.

Background

The 10 kv boundary breaker switch cabinet is commonly used at a branch line T-junction or a user terminal (a responsibility boundary point), when a fault occurs inside a user at the T-junction of a 10 kv cable line, if the fault occurs at an incoming line section, or the fault occurs at the inner side of an incoming line switch of the user, but the relay protection action time limit of the fault does not match with the relay protection action time limit of an outgoing line switch of a substation of a power supply company, the outgoing line switch of the substation is caused to be tripped. If the fault property is permanent, the outlet switch is not successfully superposed, the accident of a common user can cause the power failure of the whole distribution line, and the accident can cause bad influence on the society. However, if a user disassembly circuit breaker switch cabinet is installed, the internal accidents (such as overcurrent, short circuit, small current grounding and the like) of the user are determined, the fault is isolated, and the power supply of the non-fault user is ensured to be recovered. The power failure area can be reduced, and the problem of responsibility dispute between the user and the power supply bureau is solved.

The demarcation switch on the market is generally of a circuit breaker or a disconnecting switch type on a column, is neither fully insulated nor difficult to realize intellectualization, and if the intellectualization is required to be increased, the universality of the unit is poor, and the production cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, provides an environment-friendly gas-insulated intelligent boundary inflatable switch cabinet, solves the problems of poor insulation and low intelligence of the boundary switch cabinet in the prior art, improves the universality of a boundary switch unit and reduces the production cost.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an environment-friendly gas-insulated intelligent demarcation inflatable cabinet comprises a cabinet body and a gas tank arranged on the cabinet body;

the air box comprises a closed incoming line high-pressure air box and a closed outgoing line high-pressure air box, wherein a load switch pole and an isolating switch which are electrically connected are arranged in the incoming line high-pressure air box, and a breaker pole is arranged in the outgoing line high-pressure air box;

the side walls of the incoming line high-pressure air box and the outgoing line high-pressure air box are respectively provided with a side expansion socket for improving expansibility, and the device can be conveniently used as a basic unit to be connected in series and expanded through the side expansion sockets so as to form a ring network type structure;

a bus is electrically connected between the two side expansion sockets, and the isolating switch and the breaker pole are both electrically connected with the bus;

the cabinet body comprises a closed voltage PT chamber, and a voltage transformer for supplying power to a secondary device is arranged in the voltage PT chamber;

Insulating gas is sealed in the incoming high-pressure gas box, the outgoing high-pressure gas box and the voltage PT chamber, so that an electrified body in the high-pressure gas box is insulated from the external connection, and is not exposed and not influenced by the outside;

the inlet wire high-pressure gas tank, the outlet wire high-pressure gas tank and the voltage PT chamber are all provided with mutually independent pressure relief channels, so that when a large amount of high-temperature high-pressure gas is generated in the moment of failure of each sealed chamber, the gas can be discharged in a timing manner, the phenomenon that the cabinet body deforms or even explodes is avoided, and the personal safety of workers is protected.

Furthermore, the cabinet body further comprises an operating mechanism chamber, and an isolating switch operating mechanism for operating the isolating switch, a load switch operating mechanism for operating a load switch pole and a circuit breaker operating mechanism for operating a circuit breaker pole are arranged in the operating mechanism chamber.

Each operating mechanism is provided with electric energy by a voltage transformer.

Furthermore, the outdoor part of the operating mechanism is provided with a primary simulation mapping which is beneficial for operators to check the state of the switch, so that the operators can conveniently know the state of the switch in real time when operating.

Further, cabinet body upper portion sets up the secondary cell, be provided with in the secondary cell and connect the backstage and be used for monitoring the relay protection of each operating mechanism, realize relay protection control to business turn over line, realize overflowing, quick-break, reclosing's function, relay protection uploads the signal, the state of each switch to the backstage in real time, makes things convenient for intelligent management.

Further, the load switch pole and the breaker pole are designed to be the same component;

the load switch operating mechanism and the breaker operating mechanism are designed to be the same component, so that repeated design and re-verification are avoided, and the universality and the design production efficiency are improved.

Furthermore, the load switch pole and the breaker pole are both in a solid sealing type, and the solid sealing material adopts epoxy resin or ethylene propylene diene monomer, so that the insulativity of a high-voltage part can be effectively improved.

Further, load switch utmost point post electric connection has inlet wire high-voltage bushing, inlet wire high-voltage bushing sets up in the inlet wire high-pressure gas case.

Furthermore, the circuit breaker pole is electrically connected with an outlet high-voltage bushing, and the outlet high-voltage bushing is arranged in the outlet high-voltage air box.

Furthermore, the cabinet body further comprises a sealed cable chamber, insulating gas is filled into the cable chamber, and the cable chamber is provided with an independent pressure relief channel.

Furthermore, the voltage transformer is connected with an external structure in an all-insulation plug-in mode, the electrified part is not exposed, and the safety of equipment and operation and inspection personnel is guaranteed.

Compared with the prior art, the utility model has the following beneficial effects:

The device places all charged bodies in a closed insulating gas chamber to provide a fully-insulated switch cabinet;

the device is used for monitoring the relay protection of each operating mechanism, and the relay protection is connected with the background, so that intelligent management is conveniently realized;

the side expansion socket is arranged on the cabinet body, so that the device can be conveniently expanded to form a ring network structure as a basic unit;

drawings

FIG. 1 is a side sectional view of an environmentally friendly gas insulated intelligent demarcation gas-filled switchgear provided in an embodiment of the present invention;

fig. 2 is a front view of an environment-friendly gas-insulated intelligent-boundary gas-filled switchgear provided in an embodiment of the present invention;

FIG. 3 is a side view of an environmentally-friendly gas-insulated intelligent split-charging switchgear provided in an embodiment of the present invention;

fig. 4 is a rear view of an environment-friendly gas-insulated intelligent boundary gas-filled switchgear provided in an embodiment of the present invention;

fig. 5 is a bottom view of an environment-friendly gas-insulated intelligent boundary gas-filled switchgear according to an embodiment of the present invention.

In the figure: 1. an operating mechanism chamber; 2. an isolation mechanism; 3. a circuit breaker operating mechanism; 4. a cabinet body; 5. a high-voltage bushing for outgoing lines; 6. a cable chamber; 7. a cable trench pressure relief channel; 8. a gas tank; 9. a breaker pole; 10. the outgoing line is connected with the copper part; 11. an isolating switch; 12. laterally expanding the socket; 13. a wire inlet chamber pressure relief channel; 14. a PT chamber pressure relief passage; 15. a wire outlet chamber pressure relief channel; 16. a voltage transformer; 17. the PT is connected with a cable; 18. PT is connected with the inner cone plug; 19. PT is connected with the inner cone; 20. a pressure indicator gauge; 21. once simulation mapping; 22. feeding a secondary cell; 23. a secondary outlet chamber; 24. a load switch operating mechanism; 25. a load switch pole; 26. feeding a high-voltage bushing; 27. feeding a high-pressure air box; 28. a high-pressure gas box for outgoing lines; 29. a voltage PT chamber; 30. a PT room door panel; 31. an electromagnetic lock; 32. and a bus bar.

Detailed Description

The utility model is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

An environment-friendly gas-insulated intelligent boundary inflation switch cabinet provided by the embodiment of the utility model, as shown in fig. 1 to 5, comprises a cabinet body 4 provided with an operating mechanism chamber 1, a cable chamber 6 and a closed voltage PT chamber 29, and an air tank 8 arranged on the cabinet body 4.

As shown in fig. 4, the air box 8 is a high pressure air box, the air box 8 is divided into a left part and a right part, the left part is an incoming line high pressure air box 27, the right part is an outgoing line high pressure air box 28, the incoming line high pressure air box 27 and the outgoing line high pressure air box 28 are both closed, the outer side walls of the incoming line high pressure weather and outgoing line high pressure air box 28 are both provided with side expansion sockets 12, the device is convenient to construct a ring network structure as a basic unit, the two sides are expanded and inserted with buses 32 which are electrically connected, and the buses 32 penetrate through the insides of the incoming line high pressure air box 27 and the outgoing line high pressure air box 28.

As shown in fig. 1 and 4, the inlet wire high-pressure air tank 27 is provided with an isolating switch 11 and a load switch pole 25, the load switch pole 25 is switched off by a vacuum bubble switch, the isolating switch 11 is located above the load switch and is electrically connected with the load switch pole 25 by a round copper rod, the lower part of the load switch pole 25 is electrically connected with an inlet wire high-pressure bushing 26 by a copper bar, and the isolating switch 11 is electrically connected with a bus 32 by the round copper rod.

As shown in fig. 1 and 4, the inside circuit breaker utmost point post 9 that is provided with of high-pressure gas case 28 of being qualified for the next round of competitions, the connection copper spare 10 of being qualified for the next round of competitions, the high-voltage bushing 5 and the PT of being qualified for the next round of competitions connect interior awl 19, circuit breaker utmost point post 9 adopts the vacuum bulb switch to break, circuit breaker utmost point post 9 realizes electric connection through circle bar copper and generating line 32, circuit breaker utmost point post 9 is through being qualified for the next round of competitions connection copper spare 10 electric connection high-voltage bushing 5 of being qualified for the next round of competitions, it is the connection copper bar to go out to connect copper spare 10, the high-voltage bushing 5 of being qualified for the next round of competitions is connected interior awl 19 electric connection through circle bar copper and PT, PT connects interior awl 19 access voltage PT room 29.

As shown in fig. 1 and fig. 4, a PT connection inner cone plug 18, a PT connection cable 17 and a voltage transformer 16 are arranged in the voltage PT chamber 29, the PT connection inner cone plug 18 is sequentially connected with the PT connection cable 17 and the voltage transformer 16, and is connected with the PT connection inner cone 19, so as to realize the conduction of the breaker pole 9, the outgoing line high-voltage bushing 5 and the voltage transformer 16, the voltage transformer 16 provides an operating power supply and a secondary power supply for the device, so that the uninterrupted power supply is realized, the secondary instrument power supply and the operating mechanism power supply are continuously provided, the voltage transformer 16 is connected with external equipment in a full-insulation plugging manner, and the electrified part is not exposed to ensure the safety of equipment and operation and inspection personnel.

As shown in fig. 1 and 2, the voltage PT chamber 29 is designed with a hinged door panel, and an electromagnetic lock 31 is designed on the door panel, so that the door panel cannot be opened when the voltage PT chamber 29 is charged.

As shown in fig. 1 and 4, the side expanding socket 12 and the PT connection inner cone 19 are of the same design structure, and the incoming high-voltage bushing 26 and the outgoing high-voltage bushing 5 are of the same design structure, so that the module is easy to generalize, and the efficiency of component design and production is improved.

The inlet high-pressure gas box 27, the outlet high-pressure gas box 28 and the voltage PT chamber 29 are all filled with insulating gas in a sealed manner, and the insulating gas can be nitrogen, dry air or mixed gas of the nitrogen and the dry air.

As shown in fig. 1 and 4, the load switch pole 25 and the breaker pole 9 are designed as the same component, so as to avoid repeated design and revalidation, and are manufactured by casting a vacuum arc-extinguishing chamber with epoxy resin or ethylene propylene diene monomer as an insulating housing, the vacuum arc-extinguishing chamber is used as a key part for switching on and off high-voltage current,

as shown in fig. 1 and 4, the inside of the operating mechanism chamber 1 is provided with an isolating switch operating mechanism for operating the isolating switch 11, a load switch operating mechanism 24 for operating the load switch pole 25, and a circuit breaker operating mechanism 3 for operating the circuit breaker pole 9, each operating mechanism is powered by the voltage transformer 16, and the load switch operating mechanism 24 and the circuit breaker operating mechanism 3 are designed as the same component, so as to avoid repeated design and re-verification.

As shown in fig. 2, a one-time simulation map 21 is attached to the outside of the operating mechanism chamber 1, so that the operator can see the state of the switch during operation.

As shown in fig. 1 and fig. 2, a secondary chamber is arranged at the upper part of the cabinet body 4, the secondary chamber includes an incoming line secondary chamber 22 arranged on an incoming line high-pressure air box 27 and an outgoing line secondary chamber 23 arranged on an outgoing line high-pressure air box 28, a relay protection and pressure indication meter 20 for monitoring a load switch operating mechanism 24 is arranged in the incoming line secondary chamber 22, a relay protection for monitoring a breaker operating mechanism 3 is arranged in the outgoing line secondary chamber 23, the incoming line and the outgoing line are both monitored by the relay protection, each relay protection and pressure indication meter 20 is powered by a voltage transformer 16, so that the functions of overcurrent, quick-break and reclosing are realized, meanwhile, all signals and states of the switch can be uploaded to a background by the relay protection in real time, and intelligent management is facilitated.

As shown in fig. 1, fig. 4 and fig. 5, a dedicated pressure relief channel is provided in the cabinet 4, the pressure relief channel includes a cable trench pressure relief channel 7 for pressure relief of the cable chamber 6, a wire inlet chamber pressure relief channel 13 for pressure relief of the wire inlet high-pressure air tank 27, a wire outlet chamber pressure relief channel 15 for pressure relief of the wire outlet high-pressure air tank 28, and a PT chamber pressure relief channel 14 for pressure relief of the voltage PT chamber 29, each pressure relief channel is independent of the other, the wire inlet pressure relief channel communicates with the cable chamber 6, the wire inlet chamber pressure relief channel 13 is connected to the cable chamber 6, the wire outlet chamber pressure relief channel 15 is connected to the voltage PT chamber 29, the PT chamber pressure relief channel 14 is connected to the cable chamber 6, and the cable trench pressure relief channel 7 is located at the bottom of the cabinet 4 and communicates with the outside.

High-temperature high-pressure gas generated by faults in the wire inlet high-pressure gas box 27 is discharged to the cable trench pressure relief channel 7 through the wire inlet chamber pressure relief channel 13, high-temperature high-pressure gas generated by faults in the wire outlet high-pressure gas box 28 is discharged to the cable trench pressure relief channel 7 through the wire outlet chamber pressure relief channel 15 and the PT chamber pressure relief channel 14, and high-temperature high-pressure gas generated by faults in the voltage PT chamber 29 is discharged to the cable trench pressure relief channel 7 through the PT chamber pressure relief channel 14.

The connection of all electrified bodies of this device all adopts copper bar or circle copper bar, can improve the peace and quiet degree of electric field, avoids point discharge, and the manufacture is simple moreover, and convenient assembling reduces the production degree of difficulty of this device.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be considered as the protection scope of the present invention.

Claims (10)

1. The utility model provides an environmental protection gas insulation intelligence boundary inflatable switchgear, its characterized in that:

comprises a cabinet body (4) and an air box (8) arranged on the cabinet body (4);

the air box (8) comprises a closed incoming line high-pressure air box (27) and a closed outgoing line high-pressure air box (28), a load switch pole (25) and an isolating switch (11) which are electrically connected are arranged in the incoming line high-pressure air box (27), and a breaker pole (9) is arranged in the outgoing line high-pressure air box (28);

Side expansion sockets (12) for improving expansibility are arranged on the side walls of the incoming high-pressure air box (27) and the outgoing high-pressure air box (28);

a bus (32) is electrically connected between the two side expanding sockets (12), and the isolating switch (11) and the breaker pole (9) are both electrically connected with the bus (32);

the cabinet body (4) comprises a sealed voltage PT chamber (29), and a voltage transformer (16) for supplying power to a secondary device is arranged in the voltage PT chamber (29);

insulating gas is sealed in the wire inlet high-pressure gas box (27), the wire outlet high-pressure gas box (28) and the voltage PT chamber (29);

and the wire inlet high-pressure air box (27), the wire outlet high-pressure air box (28) and the voltage PT chamber (29) are respectively provided with mutually independent pressure relief channels.

2. The environment-friendly gas-insulated intelligent boundary gas-filled switch cabinet according to claim 1, characterized in that:

the cabinet body (4) further comprises an operating mechanism chamber (1), and a disconnecting switch operating mechanism for operating the disconnecting switch (11), a load switch operating mechanism (24) for operating the load switch pole (25) and a breaker operating mechanism (3) for operating the breaker pole (9) are arranged in the operating mechanism chamber (1);

each operating mechanism is provided with electric energy by a voltage transformer (16).

3. The environment-friendly gas-insulated intelligent boundary gas-filled switch cabinet according to claim 2, characterized in that:

And a primary simulation mapping (21) which is beneficial for an operator to check the switch state is arranged outside the operating mechanism chamber (1).

4. The environment-friendly gas-insulated intelligent boundary gas-filled switch cabinet according to claim 2, characterized in that:

the upper portion of the cabinet body (4) is provided with a secondary small chamber, relay protection connected with a background and used for monitoring each operating mechanism is arranged in the secondary small chamber, and each relay protection is powered by a voltage transformer (16).

5. The environment-friendly gas-insulated intelligent boundary gas-filled switch cabinet according to claim 2, characterized in that:

the load switch pole (25) and the breaker pole (9) are designed to be the same component;

the load switch operating mechanism (24) and the breaker operating mechanism (3) are designed as the same component.

6. The environment-friendly gas-insulated intelligent boundary gas-filled switch cabinet according to claim 1, characterized in that:

the load switch pole (25) and the breaker pole (9) are both in a solid sealing type, and epoxy resin or ethylene propylene diene monomer is adopted as a solid sealing material.

7. The environment-friendly gas-insulated intelligent boundary gas-filled switch cabinet according to claim 1, characterized in that:

load switch utmost point post (25) electric connection has inlet wire high-voltage bushing (26), inlet wire high-voltage bushing (26) set up in inlet wire high-pressure gas tank (27).

8. The environment-friendly gas-insulated intelligent boundary gas-filled switch cabinet according to claim 1, characterized in that:

the circuit breaker pole (9) is electrically connected with an outgoing line high-voltage bushing (5), and the outgoing line high-voltage bushing (5) is arranged in an outgoing line high-voltage air box (28).

9. The environment-friendly gas-insulated intelligent boundary gas-filled switch cabinet according to claim 1, characterized in that:

the cabinet body (4) further comprises a sealed cable chamber (6), insulating gas is filled in the cable chamber (6), and the cable chamber (6) is provided with an independent pressure relief channel.

10. The environment-friendly gas-insulated intelligent boundary gas-filled switch cabinet according to claim 1, characterized in that:

the voltage transformer (16) is connected with an external structure in a full-insulation plug-in mode.

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