CN105846335A - 12kV current-carrying 1250A solid insulation switchgear - Google Patents
12kV current-carrying 1250A solid insulation switchgear Download PDFInfo
- Publication number
- CN105846335A CN105846335A CN201610308985.3A CN201610308985A CN105846335A CN 105846335 A CN105846335 A CN 105846335A CN 201610308985 A CN201610308985 A CN 201610308985A CN 105846335 A CN105846335 A CN 105846335A
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- Prior art keywords
- isolation
- insulation
- switch
- insulating base
- current
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/005—Electrical connection between switchgear cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/01—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with resin casing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
- H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
Abstract
The invention discloses a 12kV current-carrying 1250A solid insulation switchgear. The switchgear comprises a casing, the central portion of the casing is provided with an insulation square barrel, and the insulation square barrel is internally provided with a vacuum switch, an isolation switch and a grounding switch. The insulation square barrel is externally provided with a metal shielding grounding layer, and a spring energy storage operating mechanism and a locking mechanism are arranged at one side of the insulation square barrel and are respectively in driving connection with the vacuum switch, the isolation switch and the grounding switch. According to the invention, by use of a through cluster bus structure, no matter wiring is performed at the front end or the rear end of a wire inlet and outlet system, a sufficient conductive cross section can be guaranteed, by use of a watchband contact finger technology, contacts are uniformly distributed, the conductor length is reduced, the overall loop resistance is reduced, the problem of non-uniform conduction in heavy-current electric contact is avoided, and pressing looseness caused by temperature distortion of a conductor and heating malicious deformation further caused therefrom are solved. The rated current grade of a 12kV solid insulation switchgear can reach 1250A.
Description
Technical field
The present invention relates to power transmission and distribution switch cubicle field, be specifically related to a kind of 12kV current-carrying 1250A solid insulation switch cabinet.
Background technology
Solid insulation ring main unit is a kind of collection isolated bus, assembled unit miniaturization, three kinds of technology one of outer sealing, switch and high-voltage live parts use the solid insulating materials such as epoxy resin to carry out Integral sealing encapsulating, using solid insulating material as electrical body over the ground and alternate major insulation, and by the conduction of its outer surface or a kind of new distribution equipment of semiconductive shielding layer reliable ground, national grid and south electric network are commonly used.
Along with the most domestic a large amount of popularization and application of solid insulation cabinet, part instead of expensive import solid insulation cabinet, for revitalizing the industry of name race, it is achieved " China's dream " has made indelible contribution.But the problem that current domestic solid insulation cabinet exists the most should not be ignored.Making a general survey of the domestic solid insulation cabinet condition of production, in addition to solid insulation body structure has monoblock type and the big type of A, B, C split-phase type two, each design producer inner member is arranged the most variant, and solid insulation cabinet quality is very different.Such as: great majority design producer and are limited to do not have technical force, domestic professional software, and major insulation module does not carry out the simulation studies such as stress, electric field, shelf depreciation, electric field shielding, by Experience Design；For another example: the vacuum interrupter in major insulation module is vertically to arrange mostly, and operating mechanism is placed in major insulation module top；The bus connected mode used in major insulation module is that male-tapered connects.Owing to operating mechanism is placed in the top of major insulation module, and the cable of solid insulation ring main unit more than 650mm to be ensured connects height, causes the operation excessive height of solid insulation ring main unit；Size is the biggest.
Existing design suffers from the drawback that
1, current, the most domestic solid insulation cabinet cable incoming-outgoing wire all uses slightly cylindrical cable line insulation terminals structure, can only pass through 630A rated current, and solid insulation cabinet range is restricted.Solid insulation cabinet cable incoming-outgoing wire is to be connected by slightly cylindricality wiring pile end brass bolt to realize current lead-through.And the conductive effective sectional area of M16 bolt is 154mm2, no problem by rated current 630A, but run into branch's lead-out wire connect 2 tunnels connect, in the case of rated current 1250A, current end and interbus attachment structure caloric value at least increase 50%.Cold deformation problem: owing to cable gravity produces cable tenesmus, under the effect of cable tenesmus, this position of wiring pile can produce cold deformation problem, and contact bolt can produce with binding post upper end and separate, and screw thread also relative deformation causes thread contact imbalance of pressure.Owing to the contact pressure of threaded upper portion diminishes；Bottom extrudes, and contact area reduces, and causes contact resistance to increase, the most once these gaps are affected by condensation, corrosion will be occurred to aoxidize, and oxide can further speed up this vicious cycle, so that corrosion is seriously arrived can not bear normal rating electric current.Thermal deformation problem, cable termination and wiring pile connecting portion due under running status the impact of electric current and generate heat, metalwork expands, when loading reduces, and metalwork temperature reduces, cold and hot dilation, every day is such so that metalwork is tired, produces permanent deformation, overall contact site relaxes, and causes contact resistance to increase and stimulates generation caloric value to increase.The structure improving high-current cable line insulation terminals should be important necessary.
2, electric-conductor moulding corner angle too much and do not have effective measures to change the defect that electric field is concentrated, and cause insulating part service life reduction, are typically affected by electric field at about 3 years time insulant, produce obvious electric discharge phenomena.Partial key position distortions is aging, so that producing earth fault and phase fault.Therefore, time outside solid insulation without conduction or semiconductive shielding layer, there is the untouchable potential safety hazard of faradic current staff；And outside attached painting of solid insulation is conducted electricity or after semiconductive shielding layer ground connection, shelf depreciation index is again beyond Industry code requirements.
3, isolation switch blade slab organization, shelf depreciation problem cannot solve, and blade is inserted in static contact, and owing to stress is big, it is impossible to fully-inserted, not exclusively, dynamic thermal stability is poor in contact.Original structure air insulation clearance is too small, and insulation creep distance is too small, and without room for improvement.Cause the equipment cannot be properly functioning under high altitude condition.
4, parts of traditional solid insulation cabinet vacuum interrupter is inadequate with interbus standoff distance, and during arcing, the longitudinal magnetic field between contact is by interbus magnetic field suction, and non-formation Rotating with Uniform magnetic field, easily burn molten cu cr contact material.
5, the dynamic and static contact of disconnecting switch of some solid cabinet design is arranged on an insulator mostly, and middle have leakage current to pass through either with or without ground connection isolation, there is false fracture problem.After switch cubicle uses several years, because the dielectric levels such as electric discharge, attaching particles thing decline year by year, ultimately result in apparatus insulated fault.Therefore, clear stipulaties in GB1985-2003 " high voltage isolator and earthed switch ": should not exist by adventurous leakage current between isolation fracture.
6, some solid insulation cabinet uses two station disconnecting switchs, and also some product uses tri-station isolating switch, or configures independent earthed switch.Using tri-station isolating switch can well solve the problem with grounding of all insulation equipment, but moving contact stroke will be caused long, device height or the degree of depth increase.
Summary of the invention
For the problems referred to above, it is desirable to provide the 12kV current-carrying 1250A solid insulation switch cabinet of a kind of safety and stability.
For realizing this technical purpose, the solution of the present invention is: a kind of 12kV current-carrying 1250A solid insulation switch cabinet, including casing, panel, blocking mechanism, spring energy-storage operating mechanism, bus base, outlet insulating base, insulation square tube, the insulation square tube being made up of upper insulating base and lower insulating base is set in the middle part of described casing, it is provided with teflon insulation plate in increasing the maze-type structure of insulation creep distance between described upper insulating base and lower insulating base, it is respectively arranged with vacuum switch in described upper insulating base and lower insulating base, disconnecting switch, earthed switch, bus base, outlet insulating base, described insulation square tube is outside equipped with spring energy-storage operating mechanism, drive connection between described spring energy-storage operating mechanism and blocking mechanism, described blocking mechanism respectively with vacuum switch, disconnecting switch, earthed switch drive connection；
Described vacuum switch, disconnecting switch, earthed switch electrically connect with conducting rod respectively, and described casing internal upper part is provided with bus base, and described casing inner bottom part is provided with outlet insulating base, and described casing front is provided with the transparent windows of convenient observation；
Described disconnecting switch includes isolation static contact, isolation moving contact, insulating sleeve, isolation connection end, described isolation static contact is fixed with insulation square tube, it is provided with spring touch finger on isolation static contact, isolation moving contact connects isolation static contact by horizontal movement plug-in type, the tail end of described isolation static contact is cased with the insulating sleeve for strengthening creep age distance, described isolation moving contact tail end is connected the fixing connection of end with isolation, described blocking mechanism is connected end drive connection with isolation, described isolation static contact electrically connects with conducting rod, and described insulating sleeve is umbrella-skirt type structure；
Described earthed switch includes grounding static contact, ground connection moving contact, grounding connection end, and described grounding static contact is arranged on ground connection moving contact front end, and described ground connection moving contact tail end is connected the fixing connection of end, described blocking mechanism and grounding connection end drive connection with isolation；
Described vacuum switch includes air compartment, vacuum interrupter, insulating pull rod for breaker, described air compartment is arranged between vacuum interrupter and disconnecting switch, described vacuum interrupter is horizontally set on below the safe distance of bus base, and vacuum interrupter tail end connects insulating pull rod for breaker.
As preferably, described isolation moving contact, isolation static contact are column construction, and two groups of isolation moving contacts combine U-shaped structure, and two groups of isolation moving contact front ends have been respectively connected with one group of isolation static contact, have be arranged in parallel between two groups of isolation static contacts.
As preferably, described bus base and grounding static contact are respectively arranged with spring touch finger.
As preferably, described outlet insulating base includes insulation screen, stress set, insulative cap, fixing nut, charged display hermetyic window, described conducting rod one end nesting is fixed in insulation screen, described insulation screen lower end is provided with stress set, outlet cable electrically connects through stress set with conducting rod, described conducting rod tail end connects two groups of outlet cable, described outlet cable is connected by fixing nut and conducting rod are fixing, insulative cap also it is cased with outside described fixing nut, described conducting rod tail end is also associated with the charged display hermetyic window for showing the charged situation of conducting rod.
As preferably, being all coated with resistivity outside described insulation square tube is 108-1012Ω semi-conductive layer.
As preferably, described conducting rod, isolation moving contact and ground connection moving contact are and do not have angular flexible transition structure.
As preferably, upper insulating base and the lower insulating base conjunction portion of described insulation square tube are provided with the O RunddichtringO for completely cutting off wet gas.
As preferably, being additionally provided with intelligent controller and sensor in described casing, described sensor electrically connects with intelligent controller.
Beneficial effects of the present invention, the conducting rod of patent the application of the present invention and occur that the outlet insulating base structure using through boundling bus between cable is attached, no matter terminated line before and after line system, enough conductive sections can be ensured, after using the outlet insulating base of this structure, line cable connector rated current is brought up to 1250A by 630A grade, reduces equipment heating simultaneously, improve the service life of equipment；
All use flexible transition on inner conductive part, there is no obvious wedge angle, overcome owing to electric field concentrates the point discharge phenomenon caused, shelf depreciation is made to be obviously reduced, the internal commonly used large distance umbrella skirt construction that adds of insulation square tube, reduces shelf depreciation electricity, overall electric fields uniform；After the outer attached painting conduction of casing or semiconductive shielding layer ground connection, shelf depreciation meets Industry code requirements；
Vacuum interrupter uses the horizontal arrangement of deviation bus base safe distance, avoid bus magnetic interference, the longitudinal magnetic field that during vacuum interrupter arcing, contact gap produces, electric arc can be made to be evenly distributed on contact surface, maintain low arc voltage, so that vacuum interrupter has dielectric strength resume speed after higher arc, little arc energy and little corrosion rate, improve ability and the service life of vacuum interrupter drop-out current, use watchband-shaped contactor technology simultaneously, increase conductive section, contact is uniformly distributed minimizing bulk loop resistance, avoid the uneven conducting problem in large-current electric contact, the crimping that solution conductor temperature distortion causes is unreal, few Point contact and the pernicious problem on deformation of heating caused the most further, in the case of conductive section is identical, current capacity significantly improves；
Disconnecting switch have employed double-fracture, isolation static contact spring touch finger flexible connecting structure is inserted in the isolation moving contact horizontal movement of bicylinder type.There is safe air insulation clearance between upper and lower isolation moving contact, there is not false fracture leakage current and reduce half by problem, moving contact movement travel；Meet clear stipulaties in GB1985-2003 " high voltage isolator and earthed switch ": " should not exist by adventurous leakage current between isolation fracture." requirement.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation that the present invention faces face；
Fig. 3 is the structural representation of the outlet insulating base of the present invention；
Fig. 4 is the partial structurtes schematic diagram of the disconnecting switch of the present invention；
Fig. 5 is the structural representation that the present invention overlooks face；
Fig. 6 is the structural representation of the bus base partial spring fingertip of the present invention；
Fig. 7 is upper insulating base and the structural representation of lower insulating base combination of the present invention.
Detailed description of the invention
With specific embodiment, the present invention is described in further details below in conjunction with the accompanying drawings.
nullAs shown in figs. 1-7，Specific embodiment of the present invention is a kind of 12kV current-carrying 1250A solid insulation switch cabinet，Including casing 1、Panel 13、Blocking mechanism 3、Spring energy-storage operating mechanism 2、Bus base 9、Outlet insulating base 7，Insulating base 12 and the insulation square tube of lower insulating base 11 composition it is provided with in the middle part of described casing 1，It is provided with teflon insulation plate 14 in the labyrinth type groove increasing insulation creep distance between described upper insulating base 12 and lower insulating base 11，It is respectively arranged with vacuum switch 4 in described upper insulating base 12 and lower insulating base 11、Disconnecting switch 5、Earthed switch 6、Bus base 9、Outlet insulating base 7,Described insulation square tube is outside equipped with spring energy-storage operating mechanism 2，Drive connection between described spring energy-storage operating mechanism 2 and blocking mechanism 3，Described blocking mechanism 3 respectively with vacuum switch 4、Disconnecting switch 5、Earthed switch 6 drive connection.The all charged position of the application is all closed in the casing of insulation, and people cannot touch, and has ensured the safety of operator；As it is shown in fig. 7, labyrinth type groove built-in teflon insulation plate can increase insulation creep distance between upper insulating base and lower insulating base.As it is shown in figure 5, include A, B, C three-phase combined electrical apparatus insulation square tube in described casing 1, each phase insulation square tube is combined by upper insulating base and lower insulating base；Wherein A, B, C phase bus base and insulating base in A, B, C phase are that solid insulation is overall, and by phase sequence left, center, right, rear, in, front arrangement.
Described vacuum switch 4, disconnecting switch 5, earthed switch 6 electrically connect with conducting rod 8 respectively, and described casing 1 internal upper part is provided with bus base 9, and described casing 1 inner bottom part is provided with outlet insulating base 7, and described casing 1 front is provided with the transparent windows of convenient observation.By the transparent windows that arranges towards panel direction of casing of insulation, operator is it can be seen that the divide-shut brake position of disconnecting switch earthed switch.
Described disconnecting switch 5 includes isolation static contact 51, isolation moving contact 52, insulating sleeve 53, isolation connects end 54, described isolation static contact 51 is fixed with insulation square tube, isolation static contact top is provided with spring touch finger, isolation moving contact 52 connects isolation static contact 51 by horizontal movement plug-in type, the tail end of described isolation static contact 51 is cased with the insulating sleeve 53 for strengthening creep age distance, described isolation moving contact 52 tail end is connected the fixing connection of end 54 with isolation, described blocking mechanism 3 is connected end 54 drive connection with isolation, described isolation static contact 51 electrically connects with conducting rod 8, described insulating sleeve 53 is umbrella-skirt type structure.The inside and outside path all using umbrella-skirt type of insulating sleeve defines bigger creep age distance.
Described earthed switch 6 includes grounding static contact 61, ground connection moving contact 62, grounding connection end 63, described grounding static contact 61 is arranged on ground connection moving contact 62 front end, described ground connection moving contact 62 tail end is connected the fixing connection of end 54, described blocking mechanism 3 and grounding connection end 63 drive connection with isolation；
Such as Fig. 1, shown in 4, described vacuum switch 4 includes air compartment 41, vacuum interrupter 42, insulating pull rod for breaker 43, described air compartment 41 is arranged between vacuum interrupter 42 and disconnecting switch 5, described vacuum interrupter 42 is horizontally set on below the safe distance of bus base 9, and vacuum interrupter 42 tail end connects insulating pull rod for breaker 43.Described air insulated indoor are additionally provided with illumination lamp bead.Vacuum interrupter uses the horizontal arrangement of deviation bus base safe distance, it is to avoid bus magnetic interference.The vacuum interrupter longitudinal magnetic field that contact gap produces during arcing, can make electric arc be evenly distributed on contact surface, maintain low arc voltage, so that vacuum interrupter has dielectric strength resume speed after higher arc, little arc energy and little corrosion rate.The design improves ability and the service life of vacuum interrupter drop-out current.
Sports stroke is reduced in order to improve security performance, described isolation moving contact 52, isolation static contact 51 are column construction, two groups of isolation moving contacts 52 combine U-shaped structure, two groups of isolation moving contact 52 front ends have been respectively connected with one group of isolation static contact 51, be arranged in parallel between two groups of isolation static contacts 51.Double-fracture, bicylinder type moving contact horizontal movement insert isolation static contact spring touch finger flexible connecting structure, safe air insulation clearance is had up and down between isolation moving contact, there is not false fracture leakage current and pass through problem, isolation moving contact movement travel simultaneously reduces half, ensure that enough air insulation clearances simultaneously, meet clear stipulaties in GB1985-2003 " high voltage isolator and earthed switch ": " should not exist by adventurous leakage current between isolation fracture." requirement.
In order to improve the stability of connection, described bus base 9 and grounding static contact 61 are respectively arranged with spring touch finger 10.Isolation static contact 51 top is provided with spring touch finger 10.By spring touch finger, so that be connected more stable between isolation static contact and grounding static contact with conducting rod.Watchband-shaped contactor function can be realized by spring touch finger, conductive section is significantly increased, contact is uniformly distributed simultaneously, reduce conductor length, reduce bulk loop resistance, avoid the uneven conducting problem in large-current electric contact, solve the crimping pernicious problem on deformation of heating that is unreal and that cause the most further that conductor temperature distortion causes.As shown in Figure 6, bus base is also adopted by spring touch finger structure, it is possible to conductive section is significantly increased, and contact is uniformly distributed simultaneously, reduces conductor length, reduces bulk loop resistance, it is to avoid the uneven conduction in large-current electric contact.
As shown in Figure 3, in order to ensure conducting rod and occur that cable is stably connected with, described outlet insulating base 7 includes insulation screen 71, stress set 72, insulative cap 74, fixing nut 73, charged display hermetyic window 75, described conducting rod 8 one end nesting is fixed in insulation screen 71, described insulation screen 71 lower end is provided with stress set 72, described conducting rod 8 tail end connects two groups of outlet cable 75, described outlet cable 75 electrically connects through stress set 72 with conducting rod 8, described outlet cable 75 is connected by fixing nut 73 is fixing with conducting rod 8, described fixing nut 73 is outer is also cased with insulative cap 74, described conducting rod 8 tail end is also associated with the charged display hermetyic window 76 for showing the charged situation of conducting rod.The conducting rod of the application and occur that the outlet insulating base structure using through boundling bus between cable is attached, no matter terminated line before and after line system, enough conductive sections can be ensured, after using the outlet insulating base of this structure, line cable connector rated current is brought up to 1250A by 630A grade.
In order to ensure square tube ground connection of insulating, improving security performance, it is 10 that described insulation square tube (i.e. going up insulating base 12 and lower insulating base 11) outside is all coated with resistivity8-1012Ω semi-conductive layer.The semi-conductive layer of insulation square tube exposed face spraying can reality grounding function, effectively remove electrostatic induction, shield internal electric field, reach to lower the effect of shelf depreciation so that shelf depreciation meets Industry code requirements.
In order to reduce point discharge phenomenon, described conducting rod 8, isolation moving contact 52 and ground connection moving contact 62 are does not has angular flexible excessive structural.The application all uses flexible transition on conducting rod, the isolation inner conductive part such as moving contact and ground connection moving contact, does not has obvious wedge angle, overcomes owing to electric field concentrates the point discharge phenomenon caused, make shelf depreciation be obviously reduced.
In order to increase the seal of casing, upper insulating base 12 and lower insulating base 11 combination section of described insulation square tube are provided with the O RunddichtringO for completely cutting off wet gas.The solid insulation switch cabinet condensation solved under high altitude condition affects Insulation Problems, preferably solves insulation square tube and is restricted, by production technology and material, mold insert, the problem that yield rate is low.
Different customer demands, are additionally provided with intelligent controller and sensor in described casing 1 for convenience, and described sensor electrically connects with intelligent controller.User can be according to different demands, by multiple intelligent controller and other relevant sensor devices such as apolegamy FTU, it is achieved control, measurement and defencive function in various degree.
The conducting rod of patent the application of the present invention and occur that the outlet insulating base structure using through boundling bus between cable is attached, no matter terminated line before and after line system, enough conductive sections can be ensured, after using the outlet insulating base of this structure, line cable connector rated current is brought up to 1250A by 630A grade, reduce equipment heating simultaneously, improve the service life of equipment；
All use flexible transition on inner conductive part, there is no obvious wedge angle, overcome owing to electric field concentrates the point discharge phenomenon caused, shelf depreciation is made to be obviously reduced, the commonly used large distance umbrella skirt construction that adds of box house, reduces shelf depreciation electricity, overall electric fields uniform；After the outer attached painting conduction of casing or semiconductive shielding layer ground connection, shelf depreciation meets Industry code requirements；
Vacuum interrupter uses the horizontal arrangement of deviation bus base safe distance, avoid bus magnetic interference, the longitudinal magnetic field that during vacuum interrupter arcing, contact gap produces, electric arc can be made to be evenly distributed on contact surface, maintain low arc voltage, so that vacuum interrupter has dielectric strength resume speed after higher arc, little arc energy and little corrosion rate, improve ability and the service life of vacuum interrupter drop-out current, use watchband-shaped contactor technology simultaneously, increase conductive section, contact is uniformly distributed minimizing bulk loop resistance, avoid the uneven conducting problem in large-current electric contact, the crimping that solution conductor temperature distortion causes is unreal, few point cantact and the pernicious problem on deformation of heating caused the most further, in the case of conductive section is identical, current capacity significantly improves；
Disconnecting switch have employed double-fracture, isolation static contact spring touch finger flexible connecting structure is inserted in the isolation moving contact horizontal movement of bicylinder type.There is safe air insulation clearance between upper and lower isolation moving contact, there is not false fracture leakage current and reduce half by problem, moving contact movement travel；Meet clear stipulaties in GB1985-2003 " high voltage isolator and earthed switch ": " should not exist by adventurous leakage current between isolation fracture." requirement.
The present invention more meets the requirement of solid insulation ring main unit compactedness.12kV current-carrying 1250A solid insulation switch cabinet means that one can work as the uses of two 630A cabinets, brings glad tidings for user, meet nation-building more wide in range use electrical domain.Accelerate to eliminate SF6Gas-insulated ring network cabinet, promotes low-carbon ecological economic development.Conventional solid insulation cabinet vacuum interrupter sealing spinal column insulation system is changed into fence insulation system.Enlarged umbrella skirt formula insulation system and cylindrical through boundling bus cable turnover wire installation.Make the great-current fixed body insulation cabinet of a suitable altitude environment operating mode truly.
The above; it is only presently preferred embodiments of the present invention; not in order to limit the present invention, every any trickle amendment, equivalent and improvement made above example according to the technical spirit of the present invention, within should be included in the protection domain of technical solution of the present invention.
Claims (8)
1. a 12kV current-carrying 1250A solid insulation switch cabinet, it is characterised in that: include case
Body, panel, blocking mechanism, spring energy-storage operating mechanism, bus base, outlet insulating base, absolutely
Edge square tube, arranges the insulating square being made up of upper insulating base and lower insulating base in the middle part of described casing
Cylinder, increases between described upper insulating base and lower insulating base in the maze-type structure of insulation creep distance
It is respectively provided with in being provided with teflon insulation plate, described upper insulating base and lower insulating base
There are vacuum switch, disconnecting switch, earthed switch, bus base, outlet insulating base, described insulation
Square tube is outside equipped with spring energy-storage operating mechanism, described spring energy-storage operating mechanism and blocking mechanism
Between drive connection, described blocking mechanism respectively with vacuum switch, disconnecting switch, earthed switch
Drive connection；
Described vacuum switch, disconnecting switch, earthed switch electrically connect with conducting rod respectively, described
Casing internal upper part is provided with bus base, and described casing inner bottom part is provided with outlet insulating base, described
Casing front is provided with the transparent windows of convenient observation；
Described disconnecting switch includes isolation static contact, isolation moving contact, insulating sleeve, isolation
Connecting end, described isolation static contact is fixed with insulation square tube, and isolation static contact is provided with spring
Fingertip, isolation moving contact connects isolation static contact by horizontal movement plug-in type, and described isolation is quiet
The tail end of contact is cased with the insulating sleeve for strengthening creep age distance, described isolation moving contact tail end
Be connected the fixing connection of end with isolation, described blocking mechanism is connected end drive connection with isolation, described
Isolation static contact electrically connects with conducting rod, and described insulating sleeve is umbrella-skirt type structure；
Described earthed switch includes grounding static contact, ground connection moving contact, grounding connection end, institute
Stating grounding static contact and be arranged on ground connection moving contact front end, described ground connection moving contact tail end is with isolation even
Connect the fixing connection of end, described blocking mechanism and grounding connection end drive connection；
Described vacuum switch includes air compartment, vacuum interrupter, insulating pull rod for breaker, institute
State air compartment to be arranged between vacuum interrupter and disconnecting switch, described vacuum interrupter level
Being arranged on below the safe distance of bus base, vacuum interrupter tail end connects has chopper insulation to draw
Bar.
12kV current-carrying 1250A solid insulation switch cabinet the most according to claim 1, its
It is characterised by: described isolation moving contact, isolation static contact are column construction, and two groups of isolation are dynamic
The U-shaped structure of contact combinations, to be respectively connected with one group of isolation quiet in two groups of isolation moving contact front ends
Contact, be arranged in parallel between two groups of isolation static contacts.
12kV current-carrying 1250A solid insulation switch cabinet the most according to claim 1, its
It is characterised by: on described bus base and grounding static contact, be respectively arranged with spring touch finger.
12kV current-carrying 1250A solid insulation switch cabinet the most according to claim 1, its
It is characterised by: described outlet insulating base includes insulation screen, stress set, insulative cap, consolidates
Determining nut, charged display hermetyic window, described conducting rod one end nesting is fixed in insulation screen,
Described insulation screen lower end is provided with stress set, and outlet cable is through stress set and conducting rod electricity
Connecting, described conducting rod tail end connects two groups of outlet cable, and described outlet cable is by fixing
Nut is fixing with conducting rod to be connected, and is also cased with insulative cap, described conduction outside described fixing nut
Bar tail end is also associated with the charged display hermetyic window for showing the charged situation of conducting rod.
12kV current-carrying 1250A solid insulation switch cabinet the most according to claim 1, its
It is characterised by: being all coated with resistivity outside described insulation square tube is 108-1012Ω semi-conductive layer.
12kV current-carrying 1250A solid insulation switch cabinet the most according to claim 1, its
Be characterised by: described conducting rod, isolation moving contact and ground connection moving contact be do not have angular soft
Property transition structure.
12kV current-carrying 1250A solid insulation switch cabinet the most according to claim 1, its
Be characterised by: the upper insulating base of described insulation square tube and lower insulating base conjunction portion be provided with for
The O RunddichtringO of isolation wet gas.
12kV current-carrying 1250A solid insulation switch cabinet the most according to claim 1, its
Be characterised by: in described casing, be additionally provided with intelligent controller and sensor, described sensor with
Intelligent controller electrically connects.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610308985.3A CN105846335B (en) | 2016-05-10 | 2016-05-10 | A kind of 12kV current-carrying 1250A solid insulation switch cabinets |
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| CN201610308985.3A CN105846335B (en) | 2016-05-10 | 2016-05-10 | A kind of 12kV current-carrying 1250A solid insulation switch cabinets |
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| CN105846335A true CN105846335A (en) | 2016-08-10 |
| CN105846335B CN105846335B (en) | 2018-02-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022200659A1 (en) | 2021-03-23 | 2022-09-29 | Ormazabal Y Cia., S.L.U. | Gas-insulated electrical switchgear for medium and high voltage electrical distribution networks |
| WO2023242457A1 (en) | 2022-06-15 | 2023-12-21 | Ormazabal Y Cia., S.L.U. | Electrical interconnection device |
Citations (7)
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| CN205753147U (en) * | 2016-05-10 | 2016-11-30 | 广东紫光电气有限公司 | A kind of 12kV current-carrying 1250A solid insulation switch cabinet |
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| JP3333715B2 (en) * | 1997-07-07 | 2002-10-15 | 株式会社東京エンジニアリング | Grounding method and apparatus for welding |
| JP2003333715A (en) * | 2002-03-06 | 2003-11-21 | Toshiba Corp | Switch gear |
| CN201263053Y (en) * | 2008-09-19 | 2009-06-24 | 沈阳昊诚电力科技有限公司 | Epoxy pouring tri-compartment type solid insulation switch |
| CN201263054Y (en) * | 2008-09-19 | 2009-06-24 | 沈阳昊诚电力科技有限公司 | Epoxy pouring solid insulation dual-isolation switch |
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| CN104466777A (en) * | 2014-12-05 | 2015-03-25 | 北京合锐赛尔电力科技股份有限公司 | Solid-insulated ring main unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022200659A1 (en) | 2021-03-23 | 2022-09-29 | Ormazabal Y Cia., S.L.U. | Gas-insulated electrical switchgear for medium and high voltage electrical distribution networks |
| WO2023242457A1 (en) | 2022-06-15 | 2023-12-21 | Ormazabal Y Cia., S.L.U. | Electrical interconnection device |
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|---|---|
| CN105846335B (en) | 2018-02-02 |
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