CN202978003U - High-voltage switch device and box type substation - Google Patents

Abstract

The utility model discloses a high-voltage switch device and a box type substation. The high-voltage switch device comprises three insulating buses, namely the first insulating bus, the second insulating bus and the third insulating bus. An input interface of the first insulating bus is connected with an A-phase output interface of a first electric device. A first output interface of the first insulating bus is connected with an A-phase input interface of a second electric device. A second output interface of the first insulating bus is connected with an A-phase input interface of a transformer. By the high-voltage switch device and the box type substation, the problem that box type substations are large in size and large in space occupation in the prior art is solved, size of the high-voltage switch device is reduced, and accordingly size of the whole box type substation is reduced, and the requirements for overhead underground projects are satisfied.

Description

High voltage switching device and box-type substation

Technical field

The utility model relates to field of electrical equipment, in particular to a kind of high voltage switching device and box-type substation.

Background technology

Now, in primary and secondary main line in the urban district and new city key area, the construction of shopping mall, leisure center and elaboration block is near international level, but there are very serious road occupying problem in part power distribution network, the especially pre-mounted box type transformer substation of these Recreation areas (hereinafter to be referred as " case change ") relatively, many box-type substations not only tie up gold ground, downtown area, and unordered spoiling the fun straggly.Perhaps be the reason of landscaping, quotidian box type transformation stands in new reference system and seems somewhat inferior, and, will communicate by letter, in process that 10 kilovolts and following electric power overhead cable are renovated with entering, because the case variable volume is excessive and brought very large difficulty to construction.Case with a 250kVA capacity becomes example; high-pressure section generally adopts the looped network switch apparatus of SF6 insulation to realize that 10kV part one road inlet wire 103 ', one tunnel outlet 105 ', one tunnel outlet 107 ' are with the function of tranformer protection; in similar ring main unit product, the volume minimum is that 975mm(is wide) * 751mm(is dark) * 1361mm(is high); its system diagram is as shown in Figure 1: low-pressure section mainly adopts moulds shell switch or bar switch, the overall dimension that whole case becomes into: 2850mm(is wide) * 1300mm(is dark) * 1800mm(is high).

The large problem of floor space for bringing greatly due to the box-type substation volume in prior art not yet proposes effective solution at present.

The utility model content

The large problem of floor space of bringing greatly due to the box-type substation volume for correlation technique, effective solution is not yet proposed at present, for this reason, main purpose of the present utility model is to provide a kind of high voltage switching device and box-type substation, to address the above problem.

To achieve these goals, according to an aspect of the present utility model, a kind of high voltage switching device is provided, this device comprises: isolated bus, isolated bus is three, wherein, three isolated buses are respectively the first isolated bus, the second isolated bus and the 3rd isolated bus, wherein, the input interface of the first isolated bus is connected with the A phase output interface of the first power equipment, the first output interface of the first isolated bus is connected with the A phase input interface of the second power equipment, and the second output interface of the first isolated bus is connected with the A phase input interface of transformer; The input interface of the second isolated bus is connected with the B phase output interface of the first power equipment, the first output interface of the second isolated bus is connected with the B phase input interface of the second power equipment, and the second output interface of the second isolated bus is connected with the B phase input interface of transformer; The input interface of the 3rd isolated bus is connected with the C phase output interface of the first power equipment, the first output interface of the 3rd isolated bus is connected with the C phase input interface of the second power equipment, and the second output interface of the 3rd isolated bus is connected with the C phase input interface of transformer.

Further, the second output interface of each isolated bus is connected with transformer by line protector.

Further, line protector is fuse.

Further, the input port of each isolated bus, the first output port, the second output port comprise respectively American cable end.

To achieve these goals, according to an aspect of the present utility model, a kind of box-type substation is provided, this box-type substation comprises: comprising: case body equipment, and potential device is arranged on case body equipment inside, comprise transformer, low voltage switching device and high voltage switching device, wherein, high voltage switching device is connected with transformer, is used for the high voltage electric energy of the first power equipment is imported transformer; Transformer is used for high voltage electric energy is converted to low-voltage electric energy; Low voltage switching device is connected with transformer, and being used for derives low-voltage electric energy.

Further, case body equipment comprises: casing, and casing comprises: door body device, base and top cover, wherein, the door body device is arranged on casing; Base is arranged on the bottom of casing, is connected with the lower end of each side of casing; Top cover is arranged on the top of casing, is connected with the upper end of each side of casing; Casing also comprises: ventilation equipment, ventilation equipment comprise: air-intake device, exhaust apparatus and air ducting, wherein, air-intake device comprises: be arranged on the first air-intake device on base and be arranged on the second air-intake device of body device bottom, wherein, the first air-intake device and the second air-intake device comprise respectively at least one air inlet; Exhaust apparatus comprises: be arranged on first exhaust apparatus on body device top and be arranged on the second exhaust apparatus on top cover, wherein, the first exhaust apparatus and the second exhaust apparatus comprise respectively at least one air outlet; Air ducting comprises: at least one air-guiding aisle, and the first end of air-guiding aisle is connected with air inlet, and the second end of air-guiding aisle is connected with the bottom of the fin of transformer.

Further, the door body device also comprises: door-plate, be connected with the sidewall of casing, and be provided with the second air-intake device in the bottom of door-plate, be provided with the first exhaust apparatus on the top of door-plate.

Further, low voltage switching device comprises the breaker of plastic casing switch.

Further, low voltage switching device comprises the bar shaped fuse switch.

Further, transformer is oil-filled transformer.

the various operating modes that may occur when having taken into full account work and maintenance by isolated bus of the present utility model, make the simple in structure of isolated bus by a plurality of terminals, use simple, solved the complex structure of prior art raising middle flask change high-pressure section, annexation is complicated, cause the case variable volume larger, the problem that floor space is large, realized that isolated bus is simple in structure, annexation is simple, thereby in the time of in isolated bus of the present utility model being applied to the case change, the case variable volume is little, floor space is little, and when the high-pressure section work that case becomes, can not interfere between cable.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present utility model, consists of a part of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the system schematic according to the high voltage switching device of prior art;

Fig. 2 is the electrical systematic drawing according to the high voltage switching device A phase of the utility model embodiment;

Fig. 3 a is the front view according to the high voltage switching device running status of the utility model embodiment;

Fig. 3 b is the vertical view according to the high voltage switching device running status of Fig. 3 a illustrated embodiment;

Fig. 3 c is the end view according to the high voltage switching device running status of Fig. 3 a illustrated embodiment;

Fig. 4 a is the perspective view according to the isolated bus of the embodiment of the present application;

Fig. 4 b is the rearview according to the isolated bus of the embodiment of the present application;

Fig. 4 c is the cutaway view according to the C-C of Fig. 4 a illustrated embodiment;

Fig. 4 d is the cutaway view according to the B-B of Fig. 4 a illustrated embodiment;

Fig. 4 e is the cutaway view according to the A-A of Fig. 4 b illustrated embodiment;

Fig. 5 is the structural representation according to the box-type substation of the utility model embodiment;

Fig. 6 is the structural representation according to the door body device of the utility model embodiment; And

Fig. 7 is the structural representation according to the top cover of the utility model embodiment.

Embodiment

Need to prove, in the situation that do not conflict, embodiment and the feature in embodiment in the utility model can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.

Fig. 2 is the electrical systematic drawing according to the high voltage switching device A phase of the utility model embodiment; Connection diagram when Fig. 3 a to 3c shows the running status of three-phase.

As shown in Fig. 2 and Fig. 3 a, Fig. 3 b, Fig. 3 c, this high voltage switching device comprises isolated bus, isolated bus is three, wherein, three isolated buses are respectively the first isolated bus 101, the second isolated bus 301 and the 3rd isolated bus 501, wherein, the input interface 103 of the first isolated bus 101 is connected with the A phase output interface of the first power equipment, the first output interface 105 of the first isolated bus 101 is connected with the A phase input interface of the second power equipment, and the second output interface 107 of the first isolated bus 101 is connected with the A phase input interface of transformer 100; The input interface 303 of the second isolated bus 301 is connected with the B phase output interface of the first power equipment, the first output interface 305 of the second isolated bus 301 is connected with the B phase input interface of the second power equipment, and the second output interface 307 of the second isolated bus 301 is connected with the B phase input interface of transformer 100; The input interface 503 of the 3rd isolated bus 501 is connected with the C phase output interface of the first power equipment, the first output interface 505 of the 3rd isolated bus 501 is connected with the C phase input interface of the second power equipment, and the second output interface 507 of the 3rd isolated bus 501 is connected with the C phase input interface of transformer 100.

Adopt high voltage switching device of the present utility model, on isolated bus by the employing of the high voltage switching device in case becomes, a plurality of terminals are set, wherein, terminals comprise: the first work terminals, the second work terminals, the 3rd work terminals, the first maintenance terminals, the first ground connection terminals, the second maintenance terminals, the second ground connection terminals, the 3rd maintenance terminals and the 3rd ground connection terminals.Wherein, the first work terminals are used for receiving the electric energy of the first power equipment; The second work terminals are connected with the first work terminals by the wire that is built in isolated bus, are used for output electric energy to the second power equipment; The 3rd work terminals are connected with the first work terminals by the wire that is built in isolated bus, are used for the output electric energy to transformer; The first maintenance terminals are connected with the first ground connection terminals by the wire that is built in isolated bus, are used for the operating state of maintenance the first work terminals; The second maintenance terminals are connected with the second ground connection terminals by the wire that is built in isolated bus, are used for the operating state of maintenance the second work terminals; The 3rd maintenance terminals are connected with the 3rd ground connection terminals by the wire that is built in isolated bus, are used for the operating state of maintenance the 3rd work terminals.the various operating modes that may occur when having taken into full account work and maintenance by isolated bus of the present utility model, make the simple in structure of isolated bus by a plurality of terminals, use simple, solved the complex structure of prior art raising middle flask change high-pressure section, annexation is complicated, cause the case variable volume larger, the problem that floor space is large, realized that isolated bus is simple in structure, annexation is simple, thereby in the time of in isolated bus of the present utility model being applied to the case change, the case variable volume is little, floor space is little, and when the high-pressure section work that case becomes, can not interfere between cable.

Wherein, as shown in Figure 2, the first isolated bus can be the isolated bus of the A phase of high voltage switching device.

Particularly, the second output interface of each isolated bus is connected with transformer by line protector, and wherein, line protector is fuse.

According to above-described embodiment of the present utility model, the input port of each isolated bus, the first output port, the second output port comprise respectively American cable end.

Wherein, illustrated in Fig. 3 a to 3c: band fuse canister plug-in elbow type cable end 11, fault detector 12, plug-in elbow type cable end 13, status indicator 14, insulation protection cap 15, case become with epoxy casting isolated bus row, electrification display 17.Wherein, status indicator 14 has indicated the status indicator at the first work terminals, and in actual applications, each terminals all can have status indicator.Wherein, case becomes draws together the first isolated bus 101, the second isolated bus 301, the first isolated bus 501 with the package of epoxy casting isolated bus, not shown maintenance position.

Particularly, isolated bus of the present utility model is applied to case becomes, there is two states in the high-pressure section that case becomes, i.e. normal operating condition and inspecting state.As shown in Fig. 3 a, when normal operation, the inlet wire cable is connected on isolated bus (being epoxy casting 10kV isolated bus row) by plug-in elbow type cable end, go out line current by the connected mode derivation of plug-in elbow type cable end and the first outlet cable, connect with other power equipments on looped network, the second work terminals (being the outlet of transformer side) that case becomes upper isolated bus are by realizing with the plug-in elbow type cable end of fuse and the connected mode of the second outlet cable.when inspecting state, take to first work terminals (being inlet wire) maintenance as example: with insulating bar respectively with A, B, insulation protection cap on the C three-phase on the first maintenance terminals is pulled up, then with insulating bar respectively with A, B, plug-in elbow type cable end on the C three-phase on the first work terminals is pulled up to be inserted on corresponding the first maintenance terminals, re-use insulating bar respectively with A, B, after insulation protection cap on the C three-phase on the first ground connection terminals is pulled up, check respectively A with electroscope, B, on the C three-phase, whether the first ground connection terminals are charged, if it is not charged, respectively the earth cable head is inserted on the first ground connection terminals with insulating bar, the earth cable head of this moment becomes main earth bus by cable and case and is connected, therefore when circuit is carried out inspection operation, the maintenance cable is ground connection well all, fail safe is higher.For in the utility model embodiment by the second/the 3rd maintenance position when carrying out line maintenance, inspection operation is with to overhaul the operating sequence of position when carrying out line maintenance by first identical.

As shown in Fig. 4 a to 4e, isolated bus in the utility model above-described embodiment can comprise: a plurality of terminals, wherein, terminals comprise: the first work terminals, the second work terminals, the 3rd work terminals, the first maintenance terminals, the first ground connection terminals, the second maintenance terminals, the second ground connection terminals, the 3rd maintenance terminals and the 3rd ground connection terminals, wherein, the first work terminals, as the input interface of isolated bus structure, be used for receiving the electric energy of the first power equipment; The second work terminals are connected with the first work terminals by the wire that is built in isolated bus, are used for output electric energy to the second power equipment; The 3rd work terminals are connected with the first work terminals by the wire that is built in isolated bus, are used for the output electric energy to transformer 100; The first maintenance terminals are connected with the first ground connection terminals by the wire that is built in isolated bus, are used for the line status of maintenance the first maintenance cable; The second maintenance terminals are connected with the second ground connection terminals by the wire that is built in isolated bus, are used for the line status of maintenance the second maintenance cable; The 3rd maintenance terminals are connected with the 3rd ground connection terminals by the wire that is built in isolated bus, are used for the line status of maintenance the 3rd maintenance cable.

Adopt isolated bus of the present utility model, by a plurality of terminals are set on isolated bus, wherein, terminals comprise: the first work terminals, the second work terminals, the 3rd work terminals, the first maintenance terminals, the first ground connection terminals, the second maintenance terminals, the second ground connection terminals, the 3rd maintenance terminals and the 3rd ground connection terminals.Wherein, the first work terminals are used for receiving the electric energy of the first power equipment; The second work terminals are connected with the first work terminals by the wire that is built in isolated bus, are used for output electric energy to the second power equipment; The 3rd work terminals are connected with the first work terminals by the wire that is built in isolated bus, are used for the output electric energy to transformer 100; The first maintenance terminals are connected with the first ground connection terminals by the wire that is built in isolated bus, are used for the line status of maintenance the first maintenance cable; The second maintenance terminals are connected with the second ground connection terminals by the wire that is built in isolated bus, are used for the line status of maintenance the second maintenance cable; The 3rd maintenance terminals are connected with the 3rd ground connection terminals by the wire that is built in isolated bus, are used for the line status of maintenance the 3rd maintenance cable.the various operating modes that may occur when having taken into full account work and maintenance by isolated bus of the present utility model, make the simple in structure of isolated bus by a plurality of terminals, use simple, solved the complex structure of prior art raising middle flask change high-pressure section, annexation is complicated, cause the case variable volume larger, the problem that floor space is large, realized that isolated bus is simple in structure, annexation is simple, thereby in the time of in isolated bus of the present utility model being applied to the case change, the case variable volume is little, floor space is little, and when the high-pressure section work that case becomes, can not interfere between cable.

Wherein, the isolated bus in above-described embodiment can be the isolated bus row of epoxy casting 10kV.

In above-described embodiment of the present utility model, the first work terminals are connected with the first power equipment by the inlet wire cable, are used for importing the electric current that flows out from the first power equipment; The second work terminals are connected with the second power equipment by the first outlet cable, are used for the electric current that the first work terminals import is exported to the second power equipment; The 3rd work terminals are connected with transformer 100 by the second outlet cable, are used for the electric current that the first work terminals import is exported to transformer 100.

Particularly, the first work terminals as the input interface of isolated bus structure, are used for receiving the electric energy of the first power equipment; The second work terminals be connected with the first work terminals by the wire that is built in isolated bus, and the second work terminals are used for output electric energy to the second power equipment as the first output interface of isolated bus structure; The 3rd work terminals be connected with the first work terminals by the wire that is built in isolated bus, and the 3rd work terminals are used for the output electric energy to transformer 100 as the second output interface of isolated bus structure.Wherein, the material of the wire in above-described embodiment can be copper, aluminium matter, copper cover aluminum matter.

According to above-described embodiment of the present utility model, the first maintenance terminals are connected with the first maintenance cable, and the first ground connection terminals are connected with the first earth cable, and the first maintenance terminals are used for the line status of maintenance the first maintenance cable; The second maintenance terminals are connected with the second maintenance cable, and the second ground connection terminals are connected with the second earth cable, and the second maintenance terminals are used for the line status of maintenance the second maintenance cable; The 3rd maintenance terminals are connected with the 3rd maintenance cable, and the 3rd ground connection terminals are connected with the 3rd earth cable, and the 3rd maintenance terminals are used for the line status of maintenance the 3rd maintenance cable.Wherein, the line status described in above-described embodiment can be the state whether each cable can work.

Wherein, the first maintenance cable in this embodiment is same cable with above-mentioned inlet wire cable, and the second maintenance cable and above-mentioned the first outlet cable are same cables, and the 3rd overhauls cable and above-mentioned the second outlet cable is same cable.

Whether particularly, the first maintenance terminals are connected with the first ground connection terminals, normal for maintenance the first maintenance cable as the first maintenance interface of isolated bus; Whether the second maintenance terminals are connected with the second ground connection terminals, normal for maintenance the second maintenance cable as the second maintenance interface of isolated bus; Whether the 3rd maintenance terminals are connected with the 3rd ground connection terminals, normal for maintenance the 3rd maintenance cable as the 3rd maintenance interface of isolated bus.

According to above-described embodiment of the present utility model, each terminals comprises respectively: pluggable cable head, and wherein, the pluggable cable head of the first work terminals is connected with the inlet wire cable; The pluggable cable head of the second work terminals is connected with the first outlet cable; The pluggable cable head of the 3rd work terminals is connected with the second outlet cable; The pluggable cable head of the first maintenance terminals is connected with the first maintenance cable; The pluggable cable head of the second maintenance terminals is connected with the second maintenance cable; The pluggable cable head of the 3rd maintenance terminals is connected with the 3rd maintenance cable; The pluggable cable head of the first ground connection terminals is connected with the first earth cable; The pluggable cable head of the second ground connection terminals is connected with the second earth cable; The pluggable cable head of the 3rd ground connection terminals is connected with the 3rd earth cable.Wherein, on the pluggable cable head of the 3rd work terminals, fuse is installed.

Wherein, be respectively arranged with the insulation protection cap on each terminals, the insulation protection cap is arranged on the socket of the terminals that are complementary with pluggable cable head.

According to above-described embodiment of the present utility model, the first work terminals and the vertical setting mutually on the longitudinal direction of isolated bus of the first ground connection terminals; The second work terminals and the vertical setting mutually on the longitudinal direction of isolated bus of the second ground connection terminals.

Particularly, the above-mentioned setting of isolated bus after making service work finish, if do not extract earth connection, just can't make pluggable cable head be installed to the service position, can't work, and has effectively avoided the possibility of personnel's misoperations.The various possibilities that the design of above-mentioned service position, maintenance position and earthing position has occurred when having taken into full account work and maintenance when having guaranteed high-pressure section work, can not interfere between cable.

as shown in Fig. 4 a to 4e, the first work terminals comprise the first cylindricality bus, the second work terminals comprise the second cylindricality bus, the 3rd work terminals comprise the 3rd cylindricality bus, the first maintenance terminals comprise the 4th cylindricality bus, the first ground connection terminals comprise the 5th cylindricality bus, the second maintenance terminals comprise the 6th cylindricality bus, the second ground connection terminals comprise the 7th cylindricality bus, the 3rd maintenance terminals comprise the 8th cylindricality bus, the 3rd ground connection terminals comprise the 9th cylindricality bus, wherein, the first cylindricality bus is connected with the second cylindricality bus by the first main bus bar that is built in isolated bus, to set up the annexation between the first work terminals and the second work terminals, the first cylindricality bus is connected with the 3rd cylindricality bus by the second main bus bar that is built in isolated bus, to set up the annexation between the first work terminals and the 3rd work terminals, the 4th cylindricality bus is connected with the 5th cylindricality bus by the first earth bus that is built in isolated bus, to set up the annexation between the first maintenance terminals and the first ground connection terminals, the 6th cylindricality bus is connected with the 7th cylindricality bus by the second earth bus that is built in isolated bus, to set up the annexation between the second maintenance terminals and the second ground connection terminals, the 8th cylindricality bus is connected with the 9th cylindricality bus by the 3rd earth bus that is built in isolated bus, to set up the annexation between the 3rd maintenance terminals and the 3rd ground connection terminals.

In addition, as shown in Fig. 4 e, each terminals is connected with the case change by securing member 10 respectively.

Wherein, illustrated in Fig. 4 a to 4e: outlet is to the earth bus 1 of Repair of Transformer, main bus bar 2, the earth bus 3 of line maintenance, main bus bar 4, cylindricality bus 5, cylindricality bus 6, cylindricality bus 7, M10 * 30 hexagon socket cap head screws 8, dowel screw 9.Fig. 4 e is connected with Fig. 4 b to show and is connected the securing member 10 of isolated bus to the power equipment.

In addition, as shown in Fig. 4 a, the first end of the second main bus bar is connected with the first bus, and the second end is connected with the 3rd cylindricality bus.

Particularly, each terminals is arranged on the main body of isolated bus by connector respectively.

In addition, fault detector and potential indicator are installed on inlet wire cable/first outlet cable respectively, mounting strap electrical indicator on the second outlet cable, and each terminals of isolated bus all can be provided with status indicator.

Adopt the high voltage switching device 10 in above-described embodiment, its single-phase overall dimension is: 410mm(is wide) * 250mm(is dark) * 700mm(is high), 2850mm(of the prior art is wide for volume ratio) * 1300mm(is dark) * 1800mm(is high) greatly dwindle.The first power equipment and the second power equipment can be box-type substations.

In the utility model above-described embodiment, high voltage switching device 10 is wide 1185mm, and height is 695mm, is 445mm deeply, and volume is very little.

In above-described embodiment of the present utility model, cable connecting arrangement is the transversely arranged American cable end of cable end.Particularly, adopt transversely arranged American cable end, can realize on-load plug power supply, when line maintenance, the function of the placement safety of cable end, thus more effectively reduce the human casualty accident that causes because of personnel's misoperation.

According to above-described embodiment of the present utility model, bus bar can become the bus bar with epoxy casting 10kV for case.Particularly, the employing case becomes with the loop-network switch cabinet of epoxy casting 10kV isolated bus displacement for the SF6 insulation, has effectively reduced the volume of high voltage switching device 10, and can avoid the pollution of SF6 gaseous environment and the recovery problem in later stage.

Particularly, bus bar can become with band fuse function epoxy casting 10kV isolated bus row for case.Adopt case to become with the loop-network switch cabinet of fuse function epoxy casting 10kV isolated bus displacement for the SF6 insulation, also can effectively reduce the volume of high voltage switching device 10.

Fig. 5 is the structural representation according to box-type substation of the present utility model.As shown in Figure 5, this transformer station comprises: case body equipment 20 comprises: casing 40 also comprises: door body device 60 is connected with casing 40; Base 80 is arranged on the bottom of casing 40, is connected with the lower end of each side of casing 40; Top cover 90 is arranged on the top of casing 40, is connected with the upper end of each side of casing 40; Potential device 70 is arranged on case body equipment 20 inside, comprises transformer 100, low voltage switching device 30 and high voltage switching device 10.

adopt box-type substation of the present utility model, by comprising transformer 100, the potential device 70 of low voltage switching device 30 and high voltage switching device 10 is arranged on case body equipment 20 inside, because high voltage switching device 10 of the present utility model adopts bus and cable connecting arrangement to realize one road inlet wire of high voltage switching device 10, one tunnel outlet and one tunnel outlet are to the function of transformer 100, solved the floor space of bringing greatly due to the box-type substation volume in the prior art large and affect the problem of landscaping, realized reducing the volume of high voltage switching device 10, thereby reduce the effect of the volume of whole casing transformer station, and then can satisfy the demand of making somebody a mere figurehead into the ground engineering.

In above-described embodiment of the present utility model, case body equipment 20 can also comprise: ventilation equipment, comprise: air-intake device, exhaust apparatus and air ducting, wherein, air-intake device comprises: be arranged on the first air-intake device 65 and the second air-intake device 63 that is arranged on a body device 60 bottoms on base 80, wherein, the first air-intake device 65 and the second air-intake device 63 comprise respectively at least one air inlet; Exhaust apparatus comprises: be arranged on first exhaust apparatus and the second exhaust apparatus that is arranged on top cover 90 on a body device 60 tops, wherein, the first exhaust apparatus and the second exhaust apparatus comprise respectively at least one air outlet; Air ducting comprises: at least one air-guiding aisle, and first end and the air inlet of air-guiding aisle connect, and the bottom of the second end of air-guiding aisle and the fin of transformer 100 connects.

Particularly, the ventilation of the box-type substation in above-described embodiment adopts the end to advance, and ejects the mode that goes out with side.The overall volume that becomes due to case is less, and it is particularly important that the problem of ventilation and heat just seems.Air-intake device comprises two parts: base 80 side air inlet mouths and door-plate bottom air inlet, exhaust apparatus also comprises two parts: door body device 60 top air outlets and top cover 90 side air outlets, and, in order to make the cold wind that enters by air inlet can all pass through thermal source, be designed with the guide channel of ventilation on the base 80 that case becomes, one end of passage is the air inlet of high-pressure section and low-pressure section, and the other end is the bottom of transformer 100 fin, thereby has increased effective intake.

In addition, the case body equipment 20 in above-described embodiment can adopt metal material processing to form, and overall structure is bolt connecting type, more is conducive to assemble the maintenance with the later stage.

Fig. 7 is the structural representation according to the top cover 90 of the utility model embodiment.As shown in Figure 7, between the inner casing 91 of top cover 90 and shell 93, air layer can be set, can set out the air port in the surrounding of top cover 90.

In above-described embodiment of the present utility model, door body device 60 can also comprise: door-plate, be connected with described casing 40, and the second air-intake device 63 is set in the bottom of door-plate, on the top of door-plate, the first exhaust apparatus is set.

Fig. 6 is the structural representation according to the door body device 60 of the utility model embodiment.Door body device 60 can adopt the mode of blind hinge to be connected with casing 40, as shown in Figure 6, door body device 60 comprises door-plate 61 and wind deflector, wherein, door-plate comprises: the second air-intake device 63, the second air-intake devices 63 of bottom can be the ventilation hole of venetian blind type, and the middle part is to utilize the patterns such as mountain peak that many circular protrusions forms or letter, first exhaust apparatus 65, the first air-intake devices 65 on top can be the ventilation hole of venetian blind type.

In above-described embodiment of the present utility model, low voltage switching device 30 can comprise the breaker of plastic casing switch, also can comprise the bar shaped fuse switch.Particularly, low voltage switching device 30 adopts breaker of plastic casing switch or bar shaped fuse switchs, thereby realizes the low-pressure section little purpose that takes up room.

In above-described embodiment of the present utility model, transformer 100 can be oil-filled transformer 100.More specifically, transformer 100 can be 250kVA capacity, S13 type oil-filled transformer, becomes the requirement of integral arrangement according to case, and the principle of utilizing effectively and reasonably the space, is specially designed the profile of transformer 100, makes its volume in like product minimum.

from above description, can find out, the utility model has been realized following technique effect: by high voltage switching device of the present utility model and casing transformer station, because adopting bus and cable connecting arrangement, high voltage switching device realizes one road inlet wire of high voltage switching device, one tunnel outlet and one tunnel outlet are to the function of transformer, solved in the prior art due to the large large problem of floor space of bringing of casing transformer station's volume, realized reducing the volume of high voltage switching device, thereby reduce the effect of the volume of whole box-type substation, and then can satisfy the demand of making somebody a mere figurehead into the ground engineering.

The above is only preferred embodiment of the present utility model, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.

Claims (10)

1. a high voltage switching device, is characterized in that, comprises isolated bus, and described isolated bus is three, and wherein, three described isolated buses are respectively the first isolated bus (101), the second isolated bus (301) and the 3rd isolated bus (501), wherein,

The input interface (103) of described the first isolated bus (101) is connected with the A phase output interface of the first power equipment, first output interface (105) of described the first isolated bus (101) is connected with the A phase input interface of the second power equipment, and second output interface (107) of described the first isolated bus (101) is connected with the A phase input interface of transformer;

The input interface (303) of described the second isolated bus (301) is connected with the B phase output interface of described the first power equipment, first output interface (305) of described the second isolated bus is connected with the B phase input interface of described the second power equipment, and second output interface (307) of described the second isolated bus is connected with the B phase input interface of described transformer;

The input interface (503) of described the 3rd isolated bus (501) is connected with the C phase output interface of described the first power equipment, first output interface (505) of described the 3rd isolated bus is connected with the C phase input interface of described the second power equipment, and second output interface (507) of described the 3rd isolated bus is connected with the C phase input interface of described transformer.

2. device according to claim 1, is characterized in that, the second output interface of each described isolated bus is connected with described transformer by line protector.

3. device according to claim 2, is characterized in that, described line protector is fuse.

4. device according to claim 1, is characterized in that, the input port of each described isolated bus, the first output port, the second output port comprise respectively American cable end.

5. a box-type substation, is characterized in that, comprising:

Case body equipment (20),

Potential device (70), be arranged on described case body equipment (20) inside, comprise the described high voltage switching device of any one (10) in transformer (100), low voltage switching device (30) and claim 1 to 4, wherein, described high voltage switching device (10) is connected with described transformer (100), is used for the high voltage electric energy of the first power equipment is imported described transformer (100); Described transformer (100) is used for described high voltage electric energy is converted to low-voltage electric energy; Described low voltage switching device (30) is connected with described transformer (100), and being used for derives described low-voltage electric energy.

6. box-type substation according to claim 5, is characterized in that, described case body equipment (20) comprising: casing (40), and described casing (40) comprising: door body device (60), base (80) and top cover (90), wherein,

Described door body device (60) is arranged on described casing (40);

Described base (80) is arranged on the bottom of described casing (40), is connected with the lower end of each side of described casing (40);

Described top cover (90) is arranged on the top of described casing (40), is connected with the upper end of each side of described casing (40);

Described casing (40) also comprises: ventilation equipment, and described ventilation equipment comprise: air-intake device, exhaust apparatus and air ducting, wherein,

Described air-intake device comprises: be arranged on the first air-intake device and the second air-intake device that is arranged on described door body device (60) bottom on described base (80), wherein, described the first air-intake device and described the second air-intake device comprise respectively at least one air inlet;

Described exhaust apparatus comprises: the first exhaust apparatus and the second exhaust apparatus that is arranged on described top cover (90) that are arranged on described door body device (60) top, wherein, described the first exhaust apparatus and described the second exhaust apparatus comprise respectively at least one air outlet;

Described air ducting comprises: at least one air-guiding aisle, and the first end of described air-guiding aisle is connected with described air inlet, and the second end of described air-guiding aisle is connected with the bottom of the fin of described transformer (100).

7. box-type substation according to claim 6, is characterized in that, described door body device (60) also comprises:

Door-plate is connected with the sidewall of described casing (40), is provided with described the second air-intake device in the bottom of described door-plate, is provided with described the first exhaust apparatus on the top of described door-plate.

8. box-type substation according to claim 5, is characterized in that, described low voltage switching device (30) comprises the breaker of plastic casing switch.

9. box-type substation according to claim 5, is characterized in that, described low voltage switching device (30) comprises the bar shaped fuse switch.

10. box-type substation according to claim 5, is characterized in that, described transformer (100) is oil-filled transformer.

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