CN205489248U - Novel SF6 gas -insulated PT cabinet for looped netowrk - Google Patents

Abstract

The utility model belongs to the electrical equipment field, concretely relates to novel SF6 gas -insulated PT cabinet for looped netowrk, including the cabinet body, internal gas tank and the voltage transformer of installing of cabinet, voltage transformer is connected with the help of cable and gas tank electricity. The utility model discloses having realized the miniaturization of equipment with the gas tank and for the voltage transformer of gas tank power supply is integrated to internal with a set of cabinet, having improved space utilization, the disappointing room and the cable chamber structure of setting are independent, and when the gas tank lost heart the protection, the equipment of cable chamber can not receive atmospheric pressure and assault, the cable pit of off -load orientation below for the cabinet body, and to the personnel and the equipment threat minimum at scene, the security promotes greatly.

Description

A kind of novel looped network SF6 gas-insulated PT cabinet

Technical field

This utility model belongs to regulator cubicle apparatus field, is specifically related to a kind of novel looped network SF6 gas Insulation PT cabinet.

Background technology

Looped network refers to ring distribution system, i.e. supply main formed one Guan Bi annular, power supply to This ring main is powered, from main line another Lu Yilu by the outside distribution of high-voltage switch gear.So Benefit be that each distribution branch road both can be with its main line power taking source, left side, again can be right by it Main line power taking source, side.When left side, main line is out of order, and it just continues to be powered from right side main line, and When right side, main line is out of order, and it just continues to be powered from left side main line, so, although always Power supply is single service, but obtains the reality being similar to supply power with double circuit for each distribution branch road Favour, thus improve the reliability of power supply.

Ring main unit is one group of transmission & distribution electrical equipment, for high-tension switch gear, be contained in metal or nonmetal absolutely In edge cabinet or make the electrical equipment of assembled compartment ring network power supplying units, its core uses negative Lotus switch and fuse, have simple in construction, volume is little, price is low, can improve power supply parameter and property The advantages such as energy and power supply safety.It is widely used in Urban Residential District, skyscraper, large-scale In the power distribution station of the load center such as public building, factory and enterprise and box-type substation.

The SF6 gas of gas-insulated ring network cabinet serviceability excellence, as dielectric, is greatly reduced The overall dimensions of cabinet.SF6 gas-insulated ring network cabinet is not changed by external environmental condition to be affected, and can transport Row is in the place of bad environments, even if also can guarantee that the normal fortune of switch under the extreme cases such as water logging in short-term OK.Because SF6 gas-insulated ring network cabinet has many merits, along with China implements city net, the upgrading of rural power grids, Ring main unit has obtained substantial amounts of application at home, and the nearlyest 5 years, ring main unit market achieved rapidly Development.Along with State Grid Corporation of China is intelligent, the enforcement of high reliability distribution engineering, market is to SF6 The demand of gas-insulated ring network cabinet incrementally increases, according to western high institute scholarly forecast, at Chinese market, looped network Cabinet substantially annual all with about 8% speed increase, in 5～8 years, the demand of annual 300000 unit will It it is rigidity.

Existing ring main unit solution is to use C cabinet i.e. loading switch cabinet, and the supporting i.e. voltage of PT cabinet is mutual Sensor cabinet is that C cabinet is powered use as limit cabinet, and the ring main unit gas tank used in loading switch cabinet (is called for short Gas tank), its lower surface is stepped, the facade of ladder is provided with three connect ends, special outside Shape makes C cabinet take up room greatly, and owing to gas tank is when the accidents such as maintenance, overload, short circuit occur Needs lose heart, and its disappointing mode is to be led by gases at high pressure by the cable vault below loading switch cabinet Enter the cable duct below cabinet, so loading switch cabinet takes up room big and is difficult to integrated mutual induction of voltage Device cabinet, causes great space waste, and two groups of its costs of cabinet also remain high, and these are all given The marketing of ring main unit brings certain puzzlement.

Utility model content

This utility model is in order to solve above-mentioned problems of the prior art, and this utility model provides A kind of novel looped network SF6 gas-insulated PT cabinet, it is possible to ensure that loading switch cabinet normal power supply uses, Reduce cost, improve space availability ratio.

The concrete technical scheme that this utility model uses is:

A kind of novel looped network SF6 gas-insulated PT cabinet, including cabinet, be provided with in cabinet gas tank and Voltage transformer, gas tank is arranged on the top of voltage transformer, and voltage transformer is by cable and gas tank Electrical connection.

Described cabinet is body structure, and cabinet is internally provided with operating room, gas tank, cable vault and lets out Air chamber, operating room and gas tank are positioned at above cabinet, and cable vault and disappointing room are positioned at below cabinet, operation Room is arranged on the front side of gas tank and is provided with the control chamber of gas tank, and disappointing room is positioned on rear side of cable vault, gas Bottom face is provided with gas bleeder valve, and the leakage port of gas bleeder valve is positioned at indoor of losing heart, and is provided with electricity in cable vault Pressure transformer.

Being provided with interior lining panel below gas tank, interior lining panel is symmetrical set, the upper end shape of interior lining panel with Gas tank bottom shape is suitable, and interior lining panel lower end connects firmly with the base plate of cabinet, is provided with between interior lining panel Transom window plate, transom window plate front is cable vault, and rear is room of losing heart.

It is provided with the transom window of through-hole structure on described transom window plate, in the window of transom window, is provided with barrier ribs Bar, transom window is positioned on the side of disappointing room and is additionally provided with cover plate, cover plate is provided with cutting line.

Described front end, cable vault is provided with lower cabinet door, and lower cabinet door is arranged on cabinet by fixed mechanism, Described fixed mechanism includes the fixation hook being of an L-shaped structure being arranged on cabinet both sides, the end of fixation hook Set up, lower cabinet door is provided with and forms, with fixation hook, the fixing hole that hook is spacing.

Described lower cabinet door is additionally provided with auxiliary location structure, including being arranged on the upper solid of lower cabinet door upper end Deckle and be arranged on the lower fixed edge of lower cabinet door lower end, upper fixed edge and lower fixed edge are all of an L-shaped structure, And end is all vertically arranged down, between the both sides inwall of cable vault, it is provided with entablature and sill, Upper fixed edge forms spacing cooperation with entablature and sill respectively with lower fixed edge.

Being provided with electromagnetic switch in described operating room, the tapered end of electromagnetic switch straight down and stretches out The outer side bottom surface of operating room, tapered end contacts spacing with the formation of the upper surface of lower cabinet door.

Being provided with gap between described lower cabinet door upper surface and operating room bottom, the width in gap is more than The height of fixation hook, the extension elongation of tapered end is equal to the width in gap.

Described cabinet is additionally provided with the base plate of before and after's split-type structural, and base plate uses with the side plate of cabinet Bolt is fixed, and the indoor base plate that loses heart is provided with the through hole in matrix arrangement.

Being additionally provided with microswitch in described cabinet, microswitch forms spacing cooperation with lower cabinet door.

The beneficial effects of the utility model are:

Gas tank and the voltage transformer powered for gas tank are integrated in same group of cabinet by this utility model, Achieving the miniaturization of equipment, improve space availability ratio, disappointing room and cable vault's structure of setting are only Vertical, when gas tank carries out losing heart protection, the equipment of cable vault will not be impacted by air pressure, off-load direction For the cable duct below cabinet, on-the-spot personnel and equipment being threatened minimum, safety is greatly promoted.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the right apparent direction of this utility model；

Fig. 2 is the schematic diagram of Section A-A in Fig. 1；

In accompanying drawing, 1, cabinet, 2, gas tank, 3, voltage transformer, 4, operating room, 5, cable vault, 6, lose heart room, 7, control chamber, 8, gas bleeder valve, 9, interior lining panel, 10, transom window plate, 11, transom window, 12, rib is intercepted, 13, cover plate, 14, lower cabinet door, 15, fixation hook, 16, upper fixed edge, 17, Lower fixed edge, 18, entablature, 19, sill, 20, electromagnetic switch, 21, tapered end, 102, side Plate, 103, base plate.

Detailed description of the invention

Below in conjunction with the accompanying drawings and specific embodiment the utility model is described in further detail:

Specific embodiment as shown in Figures 1 and 2, a kind of novel looped network SF6 gas-insulated PT cabinet, Including cabinet 1, being provided with gas tank 2 and voltage transformer 3 in cabinet 1, it is mutual that gas tank 2 is arranged on voltage The top of sensor 3, voltage transformer 3 electrically connects with gas tank 2 by cable.Described cable size 20mm, minimum bending radius 6D, cable is connected to voltage transformer 3 outfan and the three-phase of gas tank 2 Between exit, gas tank and the voltage transformer powered for gas tank are integrated into same group by this utility model In cabinet, it is achieved that the miniaturization of equipment, decrease one group of cabinet simultaneously, reduce cost and put into, Improve space availability ratio.

As it is shown in figure 1, described cabinet 1 is body structure, cabinet 1 be internally provided with operating room 4, Gas tank 2, cable vault 5 and disappointing room 6, operating room 4 and gas tank 2 are positioned at above cabinet 1, cable vault 5 and disappointing room 6 be positioned at below cabinet 1, operating room 4 is arranged on the front side of gas tank 2 and is provided with gas tank The control chamber 7 of 2, room 6 of losing heart is positioned on rear side of cable vault 5, and gas tank 2 bottom surface is provided with gas bleeder valve 8, The leakage port of gas bleeder valve 8 is positioned at disappointing room 6, is provided with voltage transformer 3, voltage in cable vault 5 Transformer 3 electrically connects with gas tank 2.When normally using, voltage transformer 3 provides electricity for gas tank 2 Can, the SF6 gas that in gas tank 2, filling has pressure to be 0.12-0.15Mpa, the load in gas tank 2 Switch transship, short circuit, thunder and lightning, ground connection, burning, i.e. cause the accident that gas tank 2 heats up Time, the pressure of gas tank 2 increases, when pressure opens pressure higher than gas bleeder valve 8, i.e. more than 0.25MPa Time, the SF6 gas in gas tank 2 passes through unloader 8 off-load, and through losing heart, room 6 imports to cabinet 1 In the cable duct of lower section, it is to avoid the gas gone out injures personnel and other equipment at scene, it is ensured that safety And reduce loss.

Further, being provided with interior lining panel 9 below gas tank 2, interior lining panel 9 is symmetrical set, liner The upper end shape of plate 9 is suitable with gas tank 2 bottom shape, interior lining panel 9 lower end and the base plate of cabinet 1 103 connect firmly, and are provided with transom window plate 10 between interior lining panel 9, and transom window plate 10 front is cable vault 5, after Side is room 6 of losing heart.The shell of cabinet 1 and interior lining panel 9 constitute cable vault 5 and the bilayer of disappointing room 6 Side wall construction, wherein interior lining panel 9 serves the supporting role to gas tank 2, and original assembly technology is first First gas tank 2 is hung height, the base plate 103 of cabinet 1 is positioned on ground, by side plate 102 by gas Case 2 is fixed with base plate 103, constitutes the main body of cabinet 1 by gas tank, side plate 102 and base plate 103 Structure, is cable vault for cavity below gas tank, also serves as room of losing heart so that space waste is serious, and And gas tank hangs high in midair during assembling, personnel must install side plate 102 below gas tank, needs base plate 103, side plate 102 cooperates with gas tank, and operation easier is big, and gas tank is from great, and personnel are at gas Below case, danger coefficient is high, this utility model when assembling first by interior lining panel 9, transom window plate 10 and the end Plate 103 assembles, and the assembly after assembling is stepped, then gas tank 2 lifting is placed into interior lining panel 9 Upper end, now interior lining panel 9 directly supports the weight of gas tank 2, now releases lifting, will by bolt Interior lining panel 9 connects firmly with gas tank 2, now installs cabinet 1 side plate 102 and completes to assemble, and installation step is big Big simplification, workman need not complete assembling for 2 times at gas tank again, and safety improves, and reduces work strong Degree, and use the structure of the lined plate of side plate 102 9, enhance the structure of disappointing room and cable vault Intensity, when off-load, off-load gas is unlikely to damage side plate 102, from cabinet 1 both sides off-load, enters one Step improves the safety coefficient of equipment.

Further, as in figure 2 it is shown, be provided with the transom window 11 of through-hole structure on described transom window plate 10, Obstruct rib 12 it is provided with, when this utility model uses, if being arranged on cable in the window of transom window 11 When the voltage transformer 3 of room 5 occurs explosion accident, the pressure of cable vault 5 is increased to more than 0.1MPa, By transom window 11, pressure can be imported to room 6 of losing heart, prevent pressure from directly spraying from cabinet 1 front, Cause the injury of personnel, in order to avoid gases at high pressure enter the situation of cable vault 5 when gas tank 2 off-load Occurring, transom window 11 is positioned on the side of disappointing room 6 and is additionally provided with cover plate 13, cover plate 13 is provided with Cutting line.When disappointing room 6 pressure unloading raises, cover plate 13 is by intercepting rib 12, by cable vault 5 and disappointing room 6 separately, it is to avoid the off-load gas of disappointing room 6 breaks through cover plate 13, the off-load of high pressure Gas enters cable vault 5 and damages, and when cable vault 5 occurs explosion accident, due to cover plate 13 It is positioned at side, disappointing room, the stop and cover plate 13 intercepting rib 12 is provided with cutting line, Even if the impact air-flow pressure ratio gas tank 2 of the blast in cable vault 5 loses heart, little pressure is little, it is also possible to Realize, by bursting cover plate 13, by disappointing room 6, the impact air-flow after blast being imported cable duct, it is achieved The orientation of transom window 11 is opened, and efficiently solves gas tank 2 and power transformer 3 off-load when having an accident Problem, prevent the situation of injury from occurring.

Further, described front end, cable vault 5 is provided with lower cabinet door 14, and lower cabinet door 14 is by fixing Mechanism is arranged on cabinet 1, and described fixed mechanism includes being arranged on being of an L-shaped structure of cabinet 1 both sides Fixation hook 15, the end of fixation hook 15 sets up, and lower cabinet door 14 is provided with and fixation hook 15 Form the fixing hole that hook is spacing.Use fixation hook 1 hook lower cabinet door 14, and fixation hook 15 is uniform It is provided with many groups, needs upwards to lift lower cabinet door 14 and make fixation hook 15 depart from could beat with fixing hole Open and remove lower cabinet door 14, can prevent personnel from opening by mistake cabinet door and cause danger, can prevent again in cable vault 5 Strain lower cabinet door 14 during interior generation explosion accident, prevent the impact of blast from being backed down by lower cabinet door 14 and cause danger Danger, is conducive to improving the safety used.

Further, owing to lower cabinet door 14 uses hook to fix, when lower cabinet door 14 closes, fixing Hook 15 cannot observe directly, and in dim narrow switchgear house, operator are the most nervous, Lower cabinet door 14 is made to close difficulty relatively big, in order to simplify the latching process of cabinet door, described lower cabinet door 14 It is additionally provided with auxiliary location structure, including being arranged on the upper fixed edge 16 of lower cabinet door 14 upper end and arranging At the lower fixed edge 17 of lower cabinet door 14 lower end, upper fixed edge 16 and lower fixed edge 17 are all of an L-shaped structure, And end is all vertically arranged down, between the both sides inwall of cable vault 5, it is provided with entablature 18 and lower horizontal stroke Beam 19, upper fixed edge 16 and lower fixed edge 17 are formed spacing with entablature 18 and sill 19 respectively Coordinate.During use, upper and lower fixed edge is alignd with upper and lower crossbeam respectively, inwardly elapse lower cabinet door 14, when there is hook after the fixed edge of L-type puts in place because of passage with crossbeam, by the weight of lower cabinet door 14 Power effect, there is hook, completes the locking of lower cabinet door 14 in lower cabinet door 14 and fixation hook 15.

Further, in order to avoid personnel open by mistake lower cabinet door 14, in described operating room 4, it is provided with electricity Magnetic switch 20, the tapered end 21 of electromagnetic switch 20 straight down and stretches out the outer side bottom surface at operating room 4, Tapered end 21 contacts spacing with the formation of the upper surface of lower cabinet door 14.Described lower cabinet door 14 upper surface and behaviour Making to be provided with gap between bottom, room 4, the width in gap is more than the height of fixation hook 15, tapered end 21 Extension elongation equal to the width in gap.Or personnel charged at cabinet 1 by after electromagnetic switch 20 locking, Tapered end 21 stretches out and occurs spacing with lower cabinet door 14 so that lower cabinet door 14 can not upwards lift so that under Cabinet door 4 can not be opened, effectively protect equipment and the safety of operator in cabinet, it is to avoid opens by mistake cabinet The accident of door occurs, and tapered end 21 is arranged at the gap between cabinet door 14 upper surface and operating room 4 bottom In so that the locking states of cabinet door is very clear, contributes to not contacting the feelings of cabinet 1 operator Under condition, the locking of intuitive judgment cabinet 1 and charged situation, contribute to the safety of protection personnel.

Further, by means of side plate 102 and interior lining panel 9, transom window plate 10 and the cabinet 1 of cabinet 1 Backboard, enhance the structure of disappointing room 6, in order to occur lose heart time, smooth in exhaust, described cabinet Body 1 is additionally provided with the base plate 103 of before and after's split-type structural, and lose heart the base plate 103 in room 6 and cabinet 1 Side plate 102 use bolt to fix, the base plate 103 in room 6 that loses heart is provided with in matrix arrangement Through hole.Disappointing room 6 air leakage amount hour, derives gas by through hole, when air leakage amount is big, and square The through hole of configuration arrangement reduces the intensity of base plate 103, and the base plate of disappointing room 6 and cable vault 5 Base plate be independently arranged, the base plate 103 of disappointing room 6 is backed down, breaks through, by gas by powerful air-flow Import cable duct so that lose heart and smoothly complete, it is to avoid saving bit by bit of gas, it is therefore prevented that the entirety of equipment Blast, prevention accident expands further, is conducive to the safety of the personnel of keeping the scene intact and other equipment, if The base plate 103 put is not when having an accident, it is possible to prevents foreign body from entering in cabinet, improves cabinet Sealing.

Further, in order to avoid when overhaul of the equipments, personnel's maloperation is by device power, described Being additionally provided with microswitch in cabinet 1, microswitch forms spacing cooperation with lower cabinet door 14.At lower cabinet In the case of door 14 is opened, start interlock protection by control box 7 in cabinet, it is to avoid in personnel's maloperation Electricity, prevents security incident.

Claims (10)

1. a novel looped network SF6 gas-insulated PT cabinet, including cabinet (1), described cabinet (1) it is body structure, it is characterised in that: gas tank (2) and mutual induction of voltage are installed in cabinet (1) Device (3), gas tank (2) is arranged on the top of voltage transformer (3), voltage transformer (3) by Cable electrically connects with gas tank (2).

One the most according to claim 1 novel looped network SF6 gas-insulated PT cabinet, it is special Levy and be: cabinet (1) is internally provided with operating room (4), gas tank (2), cable vault (5) and lets out Air chamber (6), operating room (4) and gas tank (2) be positioned at cabinet (1) top, cable vault (5) and Disappointing room (6) is positioned at cabinet (1) lower section, and operating room (4) is arranged on the front side of gas tank (2) also Being provided with the control chamber (7) of gas tank (2), room (6) of losing heart is positioned at cable vault (5) rear side, gas tank (2) bottom surface is provided with gas bleeder valve (8), and the leakage port of gas bleeder valve (8) is positioned at disappointing room (6), Voltage transformer (3) is installed in cable vault (5).

One the most according to claim 2 novel looped network SF6 gas-insulated PT cabinet, it is special Levy and be: gas tank (2) lower section is provided with interior lining panel (9), and interior lining panel (9) is symmetrical set, The upper end shape of interior lining panel (9) is suitable with gas tank (2) bottom shape, interior lining panel (9) lower end with The base plate (103) of cabinet (1) connects firmly, and is provided with transom window plate (10), gas between interior lining panel (9) Luffer boards (10) front is cable vault (5), and rear is room (6) of losing heart.

One the most according to claim 3 novel looped network SF6 gas-insulated PT cabinet, it is special Levy and be: on described transom window plate (10), be provided with the transom window (11) of through-hole structure, transom window (11) Window in be provided with obstruct rib (12), transom window (11) is positioned on the side of disappointing room (6) also Being provided with cover plate (13), cover plate is provided with cutting line on (13).

One the most according to claim 2 novel looped network SF6 gas-insulated PT cabinet, it is special Levy and be: described cable vault (5) front end is provided with lower cabinet door (14), lower cabinet door (14) by Fixed mechanism is arranged on cabinet (1), and described fixed mechanism includes being arranged on cabinet (1) both sides The fixation hook (15) being of an L-shaped structure, the end of fixation hook (15) sets up, lower cabinet door (14) On be provided with and form the spacing fixing hole of hook with fixation hook (15).

One the most according to claim 5 novel looped network SF6 gas-insulated PT cabinet, it is special Levy and be: described lower cabinet door (14) is additionally provided with auxiliary location structure, including being arranged on lower cabinet door (14) the upper fixed edge (16) of upper end and be arranged on the lower fixed edge (17) of lower cabinet door (14) lower end, Upper fixed edge (16) and lower fixed edge (17) are all of an L-shaped structure, and end is all vertically arranged down, Entablature (18) and sill (19) it is provided with between the both sides inwall of cable vault (5), upper fixing Limit (16) and lower fixed edge (17) are formed spacing with entablature (18) and sill (19) respectively Coordinate.

One the most according to claim 5 novel looped network SF6 gas-insulated PT cabinet, it is special Levy and be: in operating room (4), be provided with electromagnetic switch (20), the tapered end (21) of electromagnetic switch (20) Straight down and stretch out the outer side bottom surface in operating room (4), tapered end (21) and lower cabinet door (14) It is spacing that upper surface forms contact.

One the most according to claim 7 novel looped network SF6 gas-insulated PT cabinet, it is special Levy and be: between lower cabinet door (14) upper surface and operating room (4) bottom, be provided with gap, gap Width is more than the height of fixation hook (15), and the extension elongation of tapered end (21) is equal to the width in gap.

One the most according to claim 1 novel looped network SF6 gas-insulated PT cabinet, it is special Levy and be: described cabinet (1) is additionally provided with the base plate (103) of before and after's split-type structural, base plate (103) Using bolt to fix with the side plate (102) of cabinet (1), lose heart the base plate (103) in room (6) On be provided with the through hole in matrix arrangement.

One the most according to claim 2 novel looped network SF6 gas-insulated PT cabinet, it is special Levy and be: in described cabinet (1), be additionally provided with microswitch, microswitch and lower cabinet door (14) Form spacing cooperation.