CN109545612A - A kind of integration on-load switch, combined electrical apparatus and switchgear - Google Patents

A kind of integration on-load switch, combined electrical apparatus and switchgear Download PDF

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Publication number
CN109545612A
CN109545612A CN201811638654.1A CN201811638654A CN109545612A CN 109545612 A CN109545612 A CN 109545612A CN 201811638654 A CN201811638654 A CN 201811638654A CN 109545612 A CN109545612 A CN 109545612A
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CN
China
Prior art keywords
switch
plate
ground connection
interlocking
load switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201811638654.1A
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Chinese (zh)
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CN109545612B (en
Inventor
钱羽晖
朱佩龙
欧阳道生
林昂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Tian Smart Grid Polytron Technologies Inc
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Ningbo Tian Smart Grid Polytron Technologies Inc
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Priority to CN201811638654.1A priority Critical patent/CN109545612B/en
Publication of CN109545612A publication Critical patent/CN109545612A/en
Application granted granted Critical
Publication of CN109545612B publication Critical patent/CN109545612B/en
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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02Details
    • H01H31/04Interlocking mechanisms
    • H01H31/06Interlocking mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02Details
    • H01H31/04Interlocking mechanisms
    • H01H31/10Interlocking mechanisms for interlocking two or more switches
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/30Cabinet-type casings; Parts thereof or accessories therefor

Abstract

A kind of integrated on-load switch of the invention, it is characterised in that: including chassis, on-load switch arc-chutes, disconnecting switch, on-load switch earthing switch, operating mechanism, interlocking mechanism, insulating cylinder and insulation connecting lever;A kind of integrated combination electric appliance, it is characterised in that: including chassis, on-load switch arc-chutes, disconnecting switch, combined electrical apparatus earthing switch, operating mechanism, interlocking mechanism, insulating cylinder, insulation connecting lever and fuse;A kind of on-load switch switchgear, including on-load switch further include switch cabinet, upper cabinet door, lower cabinet door, current transformer, voltage sensor and arrester;A kind of combined electrical apparatus switchgear, including such as combined electrical apparatus, further include switch cabinet, upper cabinet door, lower cabinet door, current transformer, voltage sensor and arrester.Have the advantages that miniaturization, it is integrated.

Description

A kind of integration on-load switch, combined electrical apparatus and switchgear
Technical field
The present invention relates to electrical equipments, and in particular to high-tension switch cabinet.
Background technique
In the power system, switchgear is widely used as electric energy distributing equipment.The master of switchgear (switchgear) Act on be generated electricity in electric system, transmitted electricity, the conversion of distribution and electric energy during, opened and closed, controlled and protected use Electric equipment.Component in switchgear mainly has breaker, disconnecting switch, on-load switch, operating mechanism, mutual inductor and various guarantors The composition such as protection unit.
Existing switch cabinet structure is varied, and client also constantly proposes new requirement for the design of switchgear.Such as have A little clients have high requirements for the volume of switchgear, it is desirable that accomplish that the size of switchgear is less than 500x900x1800mm, still The various parameters (including temperature rise, safe distance etc.) of each electrical component must satisfy national standard, this just brings to design very big It is difficult.Moreover, vacuum circuit breaker, on-load switch, cabinet body, the structures such as insulating cylinder, insulation connecting lever, isolation knife plate in switching mechanism It is required to carry out structure improvement for miniaturization, integrated mentality of designing.
In addition, it is noted that interlock is to prevent operator from designing the maloperation of switch, it is main split Close itself and operation, maintenance, the personnel protection of service personnel.Either power transmission operation or interruption maintenance work are just by certain Operation sequence carry out.The design of interlocking is exactly a kind of limitation of hardness, exactly in order to ensure operation order be can not bypass the immediate leadership and Effectively.And common interlock is not applied for miniaturization, integrated switchgear.
Therefore, how to design to the insulation in existing vacuum circuit breaker, on-load switch, cabinet body, especially switching mechanism Cylinder, insulation connecting lever, the isolation structures such as knife plate improve, it is made to meet the requirement of a kind of miniaturization, integral switch cabinet, It is those skilled in the art's problem urgently to be resolved.
Summary of the invention
It is an object of the present invention to provide a kind of compact-sized, small in size, interlocking is reliable, one with long service life Change breaker.
It is another object of the present invention to provide a kind of using above-mentioned integral circuit breaker, miniaturization, safely may be used The switchgear leaned on.
It is an object of the present invention to provide a kind of compact-sized, small in size, interlocking is reliable, one with long service life Change on-load switch.
It is another object of the present invention to provide a kind of using above-mentioned integrated on-load switch, miniaturization, safety Reliable switchgear.
It is an object of the present invention to provide a kind of compact-sized, small in size, interlocking is reliable, one with long service life Change combined electrical apparatus.
It is another object of the present invention to provide a kind of using above-mentioned integrated combination electric appliance, miniaturization, safety Reliable switchgear.
In addition, the present invention also provides a kind of miniaturization, safe and reliable, it is convenient flexible, above-mentioned one can be met simultaneously The integral switch cabinet body that body breaker, integrated on-load switch, integrated combination electric appliance are installed.
Moreover, integral circuit breaker, integrated on-load switch, integrated combination electric appliance are using identical in the present invention The hardened structure of lock construction, isolation knife, insulation crank arm structure and insulating barrel structure.Therefore, the present invention also has following four subhead:
It is reliable that of the invention first point is designed to provide a kind of interlocking, the interlocking of easy to operate integral switch mechanism Mechanism.
Of the invention second point is designed to provide that a kind of contact is reliable, and temperature rise is small, integral switch with long service life The isolation knife plate of mechanism.
Third of the invention point is designed to provide a kind of small in size, and few with material, intensity is high, meets creepage distance requirement Insulating cylinder.
Of the invention the 4th point is designed to provide a kind of intensity height, and endurance is big, integral switch mechanism small in size Insulation connecting lever.
To achieve the above objectives, the technical solution adopted by the present invention are as follows: a kind of integral circuit breaker includes chassis, breaker Arc-chutes, disconnecting switch, circuit interrupter grounding switch, operating mechanism, interlocking mechanism, insulating cylinder and insulation connecting lever;
The chassis is used to support, install the road device arc-chutes, the disconnecting switch, the circuit interrupter grounding switch, The operating mechanism, the interlocking mechanism, the insulating cylinder and the insulation connecting lever, the chassis are also used to be fixedly installed in out It closes on cabinet body;
The operating mechanism drives the arc-extinguishing chamber of circuit breaker, the disconnecting switch and circuit interrupter grounding switch to carry out Division;
The arc-extinguishing chamber of circuit breaker can cut-off load current and short circuit current;
The disconnecting switch is used for isolated power supply;The disconnecting switch includes three groups of isolation knife plates, and the isolation knife plate is Four knife plate structures, isolation knife plate includes knife plate, hold-down bolt, clamp nut, touch spring and spacer sleeve, the knife described in every group Plate is four pieces, and the hold-down bolt and the clamp nut are two groups, and the hold-down bolt passes through four pieces of knife plate both ends, and It is fixed by the clamp nut, the knife plate can slide on the hold-down bolt, between the knife plate of two pieces of inside It is provided with the touch spring, the touch spring is sheathed on the hold-down bolt, and the touch spring forces two pieces of inside The knife plate outside Slideslip is provided with the spacer sleeve, the spacer sleeve between the inside knife plate and the outside knife plate It is sheathed on the hold-down bolt, the spacer sleeve is used to limit between the minimum between the inside knife plate and the outside knife plate Away from;
The circuit interrupter grounding switch is grounded for on-off;Circuit interrupter grounding switch include the first grounding contact, First earthing, first rotating shaft, the first pulling plate and the first tension spring;First grounding contact is fixedly installed on the breaker and goes out Arc chamber lower end, first earthing are fixedly installed in the first rotating shaft, and the first rotating shaft is rotatably dispose in the bottom On frame, first pulling plate is fixedly installed in the first rotating shaft, and first tension spring is set to first pulling plate and institute It states between chassis;First grounding contact is column contact, and first earthing is Double cutter board structure, first tension spring It is two, and is respectively arranged at first pulling plate both ends;
The interlocking mechanism is in conjunction with the operating mechanism, for limiting the arc-extinguishing chamber of circuit breaker, the disconnecting switch, institute State the operation order of circuit interrupter grounding switch and lower cabinet door;Ground connection handle hole and isolated operation are provided on the operating mechanism Hole, the ground connection handle hole may pass through operation handle, and for the switch of circuit interrupter grounding described in division, the isolated operation hole can be worn Operation handle is crossed, for disconnecting switch described in division;The interlocking mechanism includes Xiamen interlock plate, interlocking top plate, ground connection interlocking Plate, intermediate interlock plate and isolation interlock plate;The Xiamen interlock plate is fixedly installed on lower cabinet door, edge on the Xiamen interlock plate Vertical direction offers lockhole, and the interlocking top plate is in 7 fonts, and the interlocking top plate is articulated with the operation machine along inward-outward direction On structure, the interlocking top plate both ends can contradict Xiamen interlock plate and the ground connection interlock plate respectively, and the ground connection interlock plate is along perpendicular For histogram to being slideably positioned on the operating mechanism, the ground connection interlock plate extends inwardly contact projection, the interlocking top plate Upper end can contradict the contact projection, be provided with lock pillar below the contact projection, the lock pillar can pass in and out the lockhole, described Ground connection interlocking tension spring is provided between ground connection interlock plate and the operating mechanism, the ground connection interlocking tension spring forces the ground connection to join Jam plate upward sliding, the intermediate interlock plate are slideably positioned in along the vertical direction on the operating mechanism, the intermediate interlock plate Intermediate interlocking tension spring is provided between the operating mechanism, the intermediate interlocking tension spring forces the intermediate interlock plate to slide up Dynamic, the isolation interlock plate is slideably positioned in along the vertical direction on the operating mechanism;The wherein interlocking top plate both ends setting There is contact disk.
When the lower cabinet door is opened, the arc-extinguishing chamber of circuit breaker and the disconnecting switch are in gate-dividing state, the open circuit Device earthing switch is in "on" position, and the ground connection interlock plate in the top and blocks under the action of the interlocking tension spring The ground connection handle hole, limitation operate circuit interrupter grounding switch;When the lower cabinet door is closed, the lower gate interlock Plate contradicts the interlocking top plate lower end, and the interlocking top plate is flipped, and the interlocking top plate upper end contradicts the contact projection, Make the ground connection interlock plate slide downward, the lock pillar enters the lockhole, and the ground connection handle hole is opened, and can carry out institute at this time State the sub-switching operation of circuit interrupter grounding switch;The circuit interrupter grounding switchs separating brake, is driven in described by the operating mechanism Between interlock plate slide downward can be carried out at this time until the ground connection handle hole and the isolated operation hole are in opening state The closing operation of the disconnecting switch;The disconnecting switch is closed a floodgate, by the operating mechanism drive the intermediate interlock plate to Lower slider, until the intermediate interlock plate blocks the ground connection handle hole, limitation operates the ground connection handle hole, at this time It can carry out the closing operation of the arc-extinguishing chamber of circuit breaker;The arc-extinguishing chamber of circuit breaker closes a floodgate, and drives institute by the operating mechanism Isolation interlock plate upward sliding is stated, until the isolation interlock plate blocks the isolated operation hole, limitation is to the disconnecting switch It is operated;
The insulating cylinder is used for insulating protection, and for installing the arc-extinguishing chamber of circuit breaker and the disconnecting switch;Institute Stating insulating cylinder includes cylinder, extension and arched door section, and for installing the arc-extinguishing chamber of circuit breaker, the extension is set the cylinder It is placed in above the cylinder, the arched door section is set to above the extension, and the arched door section is in arched door shape, the arched door Section allows the disconnecting switch to pass through for installing the disconnecting switch;The insulating cylinder lower end offers a hinge hole, institute It states insulation connecting lever to be articulated in the cylinder hinge hole, is provided with an inserts in the cylinder hinge hole, on the cylinder inserts diametrically Direction extends outward reinforcing rod;
The insulation connecting lever is in broken line for connecting the arc-extinguishing chamber of circuit breaker and the operating mechanism, the insulation connecting lever Shape, the insulation connecting lever both ends offer connecting lever hinge hole, and the insulation connecting lever middle section offers mounting hole, the insulation connecting lever It is articulated in the cylinder hinge hole by passing through shaft in the mounting hole, is set to the connecting lever in the connecting lever hinge hole Inserts is arranged with flower piece on the connecting lever inserts.
It is a kind of integration on-load switch include chassis, on-load switch arc-chutes, disconnecting switch, on-load switch earthing switch, Operating mechanism, interlocking mechanism, insulating cylinder and insulation connecting lever;
The chassis is used to support, install the road device arc-chutes, the disconnecting switch, the on-load switch ground connection are opened Pass, the operating mechanism, the interlocking mechanism, the insulating cylinder and the insulation connecting lever, the chassis are also used to be fixedly mounted In on switch cabinet;
The operating mechanism drives the on-load switch arc-chutes, the disconnecting switch and the on-load switch earthing switch Carry out division;
The on-load switch arc-chutes can cut-off load current;
The disconnecting switch is used for isolated power supply;The disconnecting switch includes three groups of isolation knife plates, and the isolation knife plate is Four knife plate structures, isolation knife plate includes knife plate, hold-down bolt, clamp nut, touch spring and spacer sleeve, the knife described in every group Plate is four pieces, and the hold-down bolt and the clamp nut are two groups, and the hold-down bolt passes through four pieces of knife plate both ends, and It is fixed by the clamp nut, the knife plate can slide on the hold-down bolt, between the knife plate of two pieces of inside It is provided with the touch spring, the touch spring is sheathed on the hold-down bolt, and the touch spring forces two pieces of inside The knife plate outside Slideslip is provided with the spacer sleeve, the spacer sleeve between the inside knife plate and the outside knife plate It is sheathed on the hold-down bolt, the spacer sleeve is used to limit between the minimum between the inside knife plate and the outside knife plate Away from;
The on-load switch earthing switch is grounded for on-off;The on-load switch earthing switch includes the second ground connection touching Head, the second earthing, the second shaft, the second pulling plate and the second tension spring;Second grounding contact is fixedly installed on the load Arc-chutes lower end is switched, second earthing is fixedly installed in second shaft, and second shaft is rotatably dispose in On the chassis, second pulling plate is fixedly installed in second shaft, and second tension spring is set to described second and draws Between plate and the chassis;Second grounding contact is claw structure, and second earthing is the hardened structure of hilted broadsword;
The interlocking mechanism in conjunction with the operating mechanism, for limit the on-load switch arc-chutes, the disconnecting switch, The operation order of the on-load switch earthing switch and lower cabinet door;Ground connection handle hole and isolation behaviour are provided on the operating mechanism Make hole, the ground connection handle hole may pass through operation handle, for on-load switch earthing switch described in division, the isolated operation hole It may pass through operation handle, for disconnecting switch described in division;The interlocking mechanism includes Xiamen interlock plate, interlocking top plate, ground connection Interlock plate, intermediate interlock plate and isolation interlock plate;The Xiamen interlock plate is fixedly installed on lower cabinet door, the Xiamen interlock plate On offer lockhole along the vertical direction, the interlocking top plate is in 7 fonts, and the interlocking top plate is articulated with the behaviour along inward-outward direction Make in mechanism, the interlocking top plate both ends can contradict Xiamen interlock plate and the ground connection interlock plate, the ground connection interlock plate respectively It is slideably positioned on the operating mechanism along the vertical direction, the ground connection interlock plate extends inwardly contact projection, the interlocking Top plate upper end can contradict the contact projection, be provided with lock pillar below the contact projection, and the lock pillar can pass in and out the lockhole, Ground connection interlocking tension spring is provided between the ground connection interlock plate and the operating mechanism, the ground connection interlocking tension spring forces described connect Ground interlock plate upward sliding, the intermediate interlock plate are slideably positioned in along the vertical direction on the operating mechanism, the intermediate connection Be provided with intermediate interlocking tension spring between jam plate and the operating mechanism, the intermediate interlocking tension spring force the intermediate interlock plate to Upper sliding, the isolation interlock plate are slideably positioned in along the vertical direction on the operating mechanism;The wherein interlocking top plate both ends It is provided with contact disk.
When the lower cabinet door is opened, the on-load switch arc-chutes and the disconnecting switch are in gate-dividing state, described negative Lotus switch earthing switch is in "on" position, and the ground connection interlock plate is under the action of the interlocking tension spring, simultaneously in the top The ground connection handle hole is blocked, limitation operates the on-load switch earthing switch;When the lower cabinet door is closed, under described Couplet on the door jam plate contradicts the interlocking top plate lower end, and the interlocking top plate is flipped, and connects described in the interlocking top plate upper end conflict Touching protrusion makes the ground connection interlock plate slide downward, and the lock pillar enters the lockhole, and the ground connection handle hole is opened, at this time It can carry out the sub-switching operation of the on-load switch earthing switch;The on-load switch grounding switch tripping passes through the operation machine Structure drives the intermediate interlock plate slide downward, until the ground connection handle hole and the isolated operation hole are in open shape State can carry out the closing operation of the disconnecting switch at this time;The disconnecting switch is closed a floodgate, by described in operating mechanism drive Intermediate interlock plate slide downward, until the intermediate interlock plate blocks the ground connection handle hole, limitation is to the ground connection handle hole It is operated, the closing operation of the on-load switch arc-chutes can be carried out at this time;The on-load switch arc-chutes close a floodgate, and pass through institute It states operating mechanism and drives the isolation interlock plate upward sliding, until the isolation interlock plate blocks the isolated operation hole, limit System operates the disconnecting switch;
The insulating cylinder is used for insulating protection, and for installing the on-load switch arc-chutes and the disconnecting switch; The insulating cylinder includes cylinder, extension and arched door section, and the cylinder is for installing the on-load switch arc-chutes, the extension Section is set to above the cylinder, and the arched door section is set to above the extension, and the arched door section is in arched door shape, described Arched door section allows the disconnecting switch to pass through for installing the disconnecting switch;It is hinged that the insulating cylinder lower end offers cylinder Hole, the insulation connecting lever are articulated in the cylinder hinge hole, and an inserts, edge on the cylinder inserts are provided in the cylinder hinge hole Diametrical direction extends outward reinforcing rod;
The insulation connecting lever is for connecting the on-load switch arc-chutes and the operating mechanism, and the insulation connecting lever is in folding Linear, the insulation connecting lever both ends offer connecting lever hinge hole, and the insulation connecting lever middle section offers mounting hole, and the insulation is turned Arm is articulated in the cylinder hinge hole by passing through shaft in the mounting hole, and described turn is set in the connecting lever hinge hole Arm inserts is arranged with flower piece on the connecting lever inserts.
A kind of integrated combination electric appliance include chassis, on-load switch arc-chutes, disconnecting switch, combined electrical apparatus earthing switch, Operating mechanism, interlocking mechanism, insulating cylinder, insulation connecting lever and fuse;
The chassis is used to support, install the road device arc-chutes, the disconnecting switch, the combined electrical apparatus ground connection are opened Pass, the operating mechanism, the interlocking mechanism, the insulating cylinder and the insulation connecting lever, the chassis are also used to be fixedly mounted In on switch cabinet;
The operating mechanism drives the on-load switch arc-chutes, the disconnecting switch and the combined electrical apparatus earthing switch Carry out division;
The on-load switch arc-chutes can cut-off load current;
The fuse is for cut-offfing short circuit current;The fuse includes mounting base, insulator and fusible core, the installation Seat upper end is fixedly installed on on-load switch arc-chutes lower end, and the mounting base lower end is fixedly installed on by the insulator On the chassis, the fusible core is arranged in the mounting base;
The disconnecting switch is used for isolated power supply;The disconnecting switch includes three groups of isolation knife plates, and the isolation knife plate is Four knife plate structures, isolation knife plate includes knife plate, hold-down bolt, clamp nut, touch spring and spacer sleeve, the knife described in every group Plate is four pieces, and the hold-down bolt and the clamp nut are two groups, and the hold-down bolt passes through four pieces of knife plate both ends, and It is fixed by the clamp nut, the knife plate can slide on the hold-down bolt, between the knife plate of two pieces of inside It is provided with the touch spring, the touch spring is sheathed on the hold-down bolt, and the touch spring forces two pieces of inside The knife plate outside Slideslip is provided with the spacer sleeve, the spacer sleeve between the inside knife plate and the outside knife plate It is sheathed on the hold-down bolt, the spacer sleeve is used to limit between the minimum between the inside knife plate and the outside knife plate Away from;
The combined electrical apparatus earthing switch is grounded for on-off;The combined electrical apparatus earthing switch includes third ground connection touching Head, third earthing, third shaft, third pulling plate and third tension spring;The third grounding contact is fixedly installed under mounting base End, the third earthing are fixedly installed in the third shaft, and the third shaft is rotatably dispose on the chassis, institute Third pulling plate is stated to be fixedly installed in the third shaft, the third tension spring be set to the third pulling plate and the chassis it Between;The third grounding contact is claw structure, and the third earthing is the hardened structure of hilted broadsword, connects to the third knife from upper past Lower card is set in the third grounding contact;
The interlocking mechanism in conjunction with the operating mechanism, for limit the on-load switch arc-chutes, the disconnecting switch, The operation order of the combined electrical apparatus earthing switch and lower cabinet door;Ground connection handle hole and isolation behaviour are provided on the operating mechanism Make hole, the ground connection handle hole may pass through operation handle, for combined electrical apparatus earthing switch described in division, the isolated operation hole It may pass through operation handle, for disconnecting switch described in division;The interlocking mechanism includes Xiamen interlock plate, interlocking top plate, ground connection Interlock plate, intermediate interlock plate and isolation interlock plate;The Xiamen interlock plate is fixedly installed on lower cabinet door, the Xiamen interlock plate On offer lockhole along the vertical direction, the interlocking top plate is in 7 fonts, and the interlocking top plate is articulated with the behaviour along inward-outward direction Make in mechanism, the interlocking top plate both ends can contradict Xiamen interlock plate and the ground connection interlock plate, the ground connection interlock plate respectively It is slideably positioned on the operating mechanism along the vertical direction, the ground connection interlock plate extends inwardly contact projection, the interlocking Top plate upper end can contradict the contact projection, be provided with lock pillar below the contact projection, and the lock pillar can pass in and out the lockhole, Ground connection interlocking tension spring is provided between the ground connection interlock plate and the operating mechanism, the ground connection interlocking tension spring forces described connect Ground interlock plate upward sliding, the intermediate interlock plate are slideably positioned in along the vertical direction on the operating mechanism, the intermediate connection Be provided with intermediate interlocking tension spring between jam plate and the operating mechanism, the intermediate interlocking tension spring force the intermediate interlock plate to Upper sliding, the isolation interlock plate are slideably positioned in along the vertical direction on the operating mechanism;The wherein interlocking top plate both ends It is provided with contact disk.
When the lower cabinet door is opened, the on-load switch arc-chutes and the disconnecting switch are in gate-dividing state, and described group It closes electric appliance ground switch and is in "on" position, the ground connection interlock plate is under the action of the interlocking tension spring, simultaneously in the top The ground connection handle hole is blocked, limitation operates the combined electrical apparatus earthing switch;When the lower cabinet door is closed, under described Couplet on the door jam plate contradicts the interlocking top plate lower end, and the interlocking top plate is flipped, and connects described in the interlocking top plate upper end conflict Touching protrusion makes the ground connection interlock plate slide downward, and the lock pillar enters the lockhole, and the ground connection handle hole is opened, at this time It can carry out the sub-switching operation of the combined electrical apparatus earthing switch;The combined electrical apparatus grounding switch tripping passes through the operation machine Structure drives the intermediate interlock plate slide downward, until the ground connection handle hole and the isolated operation hole are in open shape State can carry out the closing operation of the disconnecting switch at this time;The disconnecting switch is closed a floodgate, by described in operating mechanism drive Intermediate interlock plate slide downward, until the intermediate interlock plate blocks the ground connection handle hole, limitation is to the ground connection handle hole It is operated, the closing operation of the on-load switch arc-chutes can be carried out at this time;The on-load switch arc-chutes close a floodgate, and pass through institute It states operating mechanism and drives the isolation interlock plate upward sliding, until the isolation interlock plate blocks the isolated operation hole, limit System operates the disconnecting switch;
The insulating cylinder is used for insulating protection, and for installing the on-load switch arc-chutes and the disconnecting switch; The insulating cylinder includes cylinder, extension and arched door section, and the cylinder is for installing the on-load switch arc-chutes, the extension Section is set to above the cylinder, and the arched door section is set to above the extension, and the arched door section is in arched door shape, described Arched door section allows the disconnecting switch to pass through for installing the disconnecting switch;It is hinged that the insulating cylinder lower end offers cylinder Hole, the insulation connecting lever are articulated in the cylinder hinge hole, and an inserts, edge on the cylinder inserts are provided in the cylinder hinge hole Diametrical direction extends outward reinforcing rod;
The insulation connecting lever is for connecting the on-load switch arc-chutes and the operating mechanism, and the insulation connecting lever is in folding Linear, the insulation connecting lever both ends offer connecting lever hinge hole, and the insulation connecting lever middle section offers mounting hole, and the insulation is turned Arm is articulated in the cylinder hinge hole by passing through shaft in the mounting hole, and described turn is set in the connecting lever hinge hole Arm inserts is arranged with flower piece on the connecting lever inserts.
As the identical improvement of above-mentioned three kinds of switching mechanisms, the knife plate front end offers deformation slot, the knife plate front end Inside is provided with arc convex, and the arc convex is two, and is located at deformation slot two sides.The knife plate and the compression The touch spring, the contact bullet of two sides are additionally provided between bolt and between the knife plate and the clamp nut Spring forces two pieces of inside Slideslips of knife plate in outside;Pad is provided between the knife plate and the touch spring of two sides Piece.The first full skirt is provided on the extension, first full skirt connects the full skirt of the cylinder, and arched door section two sides are set It is equipped with the second full skirt;The reinforcing rod two sides are provided with detent projection.The connecting lever hinge hole at both ends and the mounting hole it Between be provided with connecting lever full skirt;Restraining position ring block is set on the outside of the connecting lever inserts, offers flower trough on the inside of the flower piece;It is described to turn Arm hinge hole is offset up.
A kind of circuit breaker switch cabinet, including breaker, further include switch cabinet, upper cabinet door, lower cabinet door, current transformer, Voltage sensor and arrester, the upper cabinet door and the lower cabinet door are articulated on front side of the switch cabinet, and the breaker is solid Surely it is set on the left of the switch cabinet, the current transformer, the voltage sensor and the arrester are fixedly installed on On the right side of the switch cabinet, pass through between the breaker, the current transformer, the voltage sensor and the arrester Copper bar connection.
A kind of on-load switch switchgear, including on-load switch further include switch cabinet, upper cabinet door, lower cabinet door, Current Mutual Inductance Device, voltage sensor and arrester, the upper cabinet door and the lower cabinet door are articulated on front side of the switch cabinet, and the load is opened Pass is fixedly installed on the left of the switch cabinet, and the current transformer, the voltage sensor and arrester fixation are set Be placed on the right side of the switch cabinet, the on-load switch, the current transformer, the voltage sensor and the arrester it Between pass through copper bar connect.
A kind of combined electrical apparatus switchgear, including combined electrical apparatus further include switch cabinet, upper cabinet door, lower cabinet door, Current Mutual Inductance Device, voltage sensor and arrester, the upper cabinet door and the lower cabinet door are articulated on front side of the switch cabinet, and the load is opened Pass is fixedly installed on the left of the switch cabinet, and the current transformer, the voltage sensor and arrester fixation are set Be placed on the right side of the switch cabinet, the on-load switch, the current transformer, the voltage sensor and the arrester it Between pass through copper bar connect.
As the identical switch cabinet structure of above-mentioned three kinds of switchgears, switch cabinet height is 1800mm, described to open Pass cabinet body width is 500mm, and the switch cabinet depth is 900mm;The switch cabinet is separated into cable vault, bus-bar room and instrument Table room is provided with metal partion (metp), is also removably provided with above the control room between the cable vault and the bus-bar room High instrument box offers threading groove between the high instrument box and the control room.Metal is provided at the top of the switch cabinet Heat sink.
Compared with the prior art, the advantages of the present invention are as follows:
1, switching mechanism (including breaker, on-load switch and combined electrical apparatus)+disconnecting switch+earthing switch integral type is set Meter, simplified switch installation steps, and switching mechanism can still carry out testing mechanical characteristic after being mounted in switch cabinet.Three kinds of switches Cabinet (including circuit breaker switch cabinet, on-load switch switchgear and combined electrical apparatus switchgear) whole design highlights environmental protection, economic, letter It is single, the advantages such as facilitate, and be easy to intelligent, one or two fusion developments, meet the development trend of panel switches, there is extremely strong city Field competitiveness.
2, switch cabinet have the characteristics that miniaturization, it is integrated, size Control meets client's in 500x900x1800mm Particular/special requirement.In addition, bus-bar room compartment uses metal partion (metp), meet PM compartment requirements;Electrical body distance to the ground is greater than 125mm, And when disconnecting switch gate-dividing state, isolation knife plate distance to the ground is still greater than 125mm, meets safety requirements.High instrument box can Disassembly setting energy convenient transportation, installation, are also beneficial to radiate, meet the requirement of its temperature rise test;Metallic heat radiating plate is opened for improving The heat dissipation performance for closing cabinet body meets the requirement of its temperature rise test.
3, the isolation knife plate of four knife plate structures has bigger through-current capability, also increases heat dissipation area;And multiple contacts The setting of spring makes have bigger pressure between two pieces of knife plates;The setting of arc convex is become a little by the original line way of contact The way of contact, so that contact is relatively reliable;And certain deformation occurs for the design of deformation slot, knife plate, so that the arc of two sides is convex Rising can respectively contact in place.Above-mentioned several aspects can substantially reduce the heat that isolation knife plate part generates, and can meet temperature rise Test requirements document.
4, power transmission operation order: close lower cabinet door --- divide earthing switch --- close disconnecting switch --- close arc-chutes (including Arc-extinguishing chamber of circuit breaker and on-load switch arc-chutes);Interruption maintenance operation order: divide arc-chutes --- point disconnecting switch --- splice grafting Ground switch --- open lower cabinet door;The interlocking mechanism of this programme can guarantee that equipment can only be operated according to above two sequence, full Foot " five is anti-" interlock requirement.
5, insulating cylinder reduces volume under the premise of meeting safety specifically as far as possible;The design of integrated insulating cylinder, makes Obtaining can plan as a whole to install arc-chutes and disconnecting switch, keep its structure more compact.Arc extinguishing can increase by the setting of extension simultaneously It is specific between room and disconnecting switch, guarantee its safety;The design disconnecting switch of arched door section is easy for installation, in a limited space Interior progress division movement.The setting of first full skirt, the second full skirt can increase creepage distance.Due to being connection insulation in cylinder hinge hole Connecting lever, whens division arc-chutes, will receive great impact force, therefore be provided with cylinder inserts, guarantee the intensity of cylinder hinge hole;And The setting of reinforcing rod increases the contact area of an inserts and insulating cylinder, is firmly fixed on an inserts more in insulating cylinder.
6, the structure of insulation connecting lever fold-line-shaped, enables its front end to extend into insulating cylinder, and the connecting lever that enables to insulate is limited Space in carry out division movement;The connecting lever hinge hole at insulation connecting lever both ends will receive great impact when divide-shut brake Power, therefore it is provided with connecting lever inserts, guarantee the intensity of connecting lever hinge hole;Flower piece is equivalent to the skeleton of insulation connecting lever hinge portion, The ability to bear that insulation connecting lever can be greatly increased, guarantees its intensity;The setting of connecting lever full skirt, which can guarantee, meets wanting for creepage distance It asks;The setting of stop collar and sliding slot can increase and the contact area for the connecting lever that insulate, and keeps its fixation more firm;Since connecting lever is hinged The impact force that hole receives when closing a floodgate is bigger, therefore the design on the low side of connecting lever hinge hole, so that the lower section of connecting lever hinge hole is more thick and solid, In the case where the connecting lever size that insulate limits, increase its ability to bear as far as possible.
Detailed description of the invention
Fig. 1 is the schematic perspective view of circuit breaker switch cabinet in a kind of preferred embodiment according to the present invention;
Fig. 2 is the rearview of circuit breaker switch cabinet in a kind of preferred embodiment according to the present invention;
Fig. 3 is the side view of circuit breaker switch cabinet in a kind of preferred embodiment according to the present invention;
Fig. 4 is the schematic perspective view of switch cabinet in a kind of preferred embodiment according to the present invention;
Fig. 5 and Fig. 6 is the schematic perspective view of breaker in a kind of preferred embodiment according to the present invention;Wherein Fig. 6 In also show circuit interrupter grounding switch side view;
Fig. 7 and Fig. 8 is the schematic perspective view of on-load switch in a kind of preferred embodiment according to the present invention;Wherein scheme The side view of on-load switch earthing switch is also shown in 8;
Fig. 9 and Figure 10 is the schematic perspective view of combined electrical apparatus in a kind of preferred embodiment according to the present invention;Wherein The side view of combined electrical apparatus earthing switch is also shown in Figure 10;
Figure 11 is the schematic perspective view that knife plate is isolated in a kind of preferred embodiment according to the present invention;
Figure 12 is the end enlarged view that knife plate is isolated in a kind of preferred embodiment according to the present invention;
Figure 13 is the explosive view that knife plate is isolated in a kind of preferred embodiment according to the present invention;
Figure 14 is the main view of knife plate in a kind of preferred embodiment according to the present invention;
Figure 15 is the schematic perspective view of insulation connecting lever in a kind of preferred embodiment according to the present invention;
Figure 16 is the schematic diagram of internal structure of insulation connecting lever in a kind of preferred embodiment according to the present invention;
Figure 17 is the schematic perspective view of flower piece in a kind of preferred embodiment according to the present invention;
Figure 18 is the schematic perspective view of connecting lever inserts in a kind of preferred embodiment according to the present invention;
Figure 19 is the schematic perspective view of insulating cylinder in a kind of preferred embodiment according to the present invention;
Figure 20 is the schematic perspective view of cylinder inserts in a kind of preferred embodiment according to the present invention;
Figure 21 is the main view of insulating cylinder in a kind of preferred embodiment according to the present invention;
Figure 22 is the cross-sectional view in a kind of preferred embodiment Figure 21 according to the present invention along the direction A-A;
Figure 23 to 27 is state of the interlocking mechanism in power transmission operation order in a kind of preferred embodiment according to the present invention Change schematic diagram.
Specific embodiment
It is described below for disclosing the present invention so that those skilled in the art can be realized the present invention.It is excellent in being described below Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.
In the description of the present invention, it should be noted that " transverse direction ", " vertical if any term " center " for the noun of locality To ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The indicating positions such as "bottom", "inner", "outside", " clockwise ", " counterclockwise " and positional relationship are orientation based on the figure or position Relationship is set, the narration present invention is merely for convenience of and simplifies description, rather than the device or element of indication or suggestion meaning are necessary It constructs and operates with specific orientation, with particular orientation, should not be understood as limiting specific protection scope of the invention.
It is that the structure of circuit breaker switch cabinet in a preferred embodiment of the present invention is shown as shown in Fig. 1 to 6 and Figure 11 to 27 It is intended to;As shown in Fig. 4, Fig. 7, Fig. 8 and Figure 11 to 27, the structure of on-load switch switchgear in a preferred embodiment of the present invention Schematic diagram;As shown in Fig. 4 and Figure 10 to 27, the structural representation of combined electrical apparatus switchgear in a preferred embodiment of the present invention Figure.Since breaker 100, on-load switch 200 are identical with the basic structure of combined electrical apparatus 300, the present embodiment will be to open circuit Device switch cabinet structure is described in detail, and different from circuit breaker switch cabinet to on-load switch switchgear, combined electrical apparatus switchgear Place is described, and three's something in common is not repeated to describe.
As shown in Figures 1 to 3, circuit breaker switch cabinet includes breaker 100, switch cabinet 400, upper cabinet door 500, lower cabinet door 600, current transformer 700, voltage sensor 800 and arrester 900, upper cabinet door 500 and lower cabinet door 600 are articulated with switch cabinet 400 front sides, breaker 100 are fixedly installed on the left side of switch cabinet 400, current transformer 700, voltage sensor 800 and lightning-arrest Device 900 is fixedly installed on 400 right side of switch cabinet, breaker 100, current transformer 700, voltage sensor 800 and arrester It is connected between 900 by copper bar.Above structure and installation site make switch cabinet structure more compact, to meet size requirement.
It is noted that the similarly suitable installation on-load switch 200 of above-mentioned switch cabinet structure and combined electrical apparatus 300, and The installation site and mounting means of on-load switch 200 and combined electrical apparatus 300 are and breaker 100 is identical, can directly replace disconnected Although road device 100. therefore the present embodiment only show the specific structure of circuit breaker switch cabinet, but this does not interfere on-load switch to open Close the abundant disclosure of cabinet and combined electrical apparatus switch cabinet structure.
As shown in figure 4,400 height of switch cabinet is 1800mm, 400 width of switch cabinet is 500mm, switch cabinet 400 Depth is 900mm;Switch cabinet 400 is separated into cable vault 401, bus-bar room 402 and control room 403, cable vault 401 and bus-bar room It is provided with metal partion (metp) 405 between 402, high instrument box 404, high instrument box 404 are also removably provided with above control room 403 Threading groove 4041 is offered between control room 403.Metallic heat radiating plate 406 is provided at the top of switch cabinet 400.
As shown in Figure 5 and Figure 6, the breaker 100 of the present embodiment include chassis 1, arc-extinguishing chamber of circuit breaker 2, disconnecting switch 3, Circuit interrupter grounding switch 4, operating mechanism 5, interlocking mechanism 6, insulating cylinder 7 and insulation connecting lever 8.It is specific:
Chassis 1 is used to support, installs road device arc-chutes 2, disconnecting switch 3, circuit interrupter grounding switch 4, operating mechanism 5, connection Latch mechanism 6, insulating cylinder 7 and insulation connecting lever 8, chassis 1 are also used to be fixedly installed on switch cabinet 400.
Operating mechanism 5 drives arc-extinguishing chamber of circuit breaker 2, disconnecting switch 3 and circuit interrupter grounding switch 4 to carry out division.
Arc-extinguishing chamber of circuit breaker 2 can cut-off load current and short circuit current.
Circuit interrupter grounding switch 4 is grounded for on-off;Circuit interrupter grounding switch 4 includes the first grounding contact 41, first Earthing 42, first rotating shaft 43, the first pulling plate 44 and the first tension spring 45;First grounding contact 41 is fixedly installed on breaker arc extinguishing 2 lower end of room, the first earthing 42 are fixedly installed in first rotating shaft 43, and first rotating shaft 43 is rotatably dispose on chassis 1, and first draws Plate 44 is fixedly installed in first rotating shaft 43, and the first tension spring 45 is set between the first pulling plate 44 and chassis 1;First grounding contact 41 be column contact, and the first earthing 42 is Double cutter board structure, and the first tension spring 45 is two, and is respectively arranged at the first pulling plate 44 Both ends.First tension spring 45 two can increase the operating work of earthing switch, keep divide-shut brake more reliable rapidly.
As shown in Figure 11 to 14, disconnecting switch 3 is used for isolated power supply;Disconnecting switch 3 includes three groups of isolation knife plates 31, every It is four knife plate structures from knife plate 31, every group of isolation knife plate 31 includes knife plate 311, hold-down bolt 312, clamp nut 313, contact bullet Spring 314 and spacer sleeve 315, knife plate 311 are four pieces, and hold-down bolt 312 and clamp nut 313 are two groups, and hold-down bolt 312 passes through Four pieces of knife plate both ends, and be fixed by clamp nut 313, knife plate 311 can slide on hold-down bolt 312, two pieces of inside Touch spring 314 is provided between knife plate 311, touch spring 314 is sheathed on hold-down bolt 312, and touch spring 315 forces interior The outside Slideslip of two pieces of side knife plate 311, is provided with spacer sleeve 315, spacer sleeve 315 between inside knife plate 311 and outside knife plate 311 It is sheathed on hold-down bolt 312, spacer sleeve 315 is used to limit the minimum spacing between inside knife plate 311 and outside knife plate 311. Wherein, 311 front end of knife plate offers deformation slot 3112, and 311 leading inside of knife plate is provided with arc convex 3111, arc convex 3111 be two, and is located at 3112 two sides of deformation slot.Between knife plate 311 and hold-down bolt 312 and knife plate 311 and compress spiral shell Touch spring 314 is additionally provided between mother 313, the touch spring 314 of two sides forces two pieces of knife plates 311 in outside inwardly to break away It is dynamic;Gasket 316 is provided between the knife plate 311 and touch spring 314 of two sides.
As shown in Figure 23 to 27,6 binding operation mechanism 5, interlocking mechanism is used for limiting circuit breaker arc-chutes 2, disconnecting switch 3, the operation order of circuit interrupter grounding switch 4 and lower cabinet door 600;Ground connection handle hole 6a and isolation behaviour are provided on operating mechanism 5 Make hole 6b, ground connection handle hole 6a may pass through operation handle, and (similarly suitable division load is opened for division circuit interrupter grounding switch 4 Close earthing switch 4 ' and combined electrical apparatus earthing switch 4 ", similarly hereinafter), isolated operation hole 6b may pass through operation handle, for division every Leave pass 3;Interlocking mechanism 6 includes Xiamen interlock plate 61, interlocking top plate 62, ground connection interlock plate 63, intermediate interlock plate 64 and isolation Interlock plate 65;Xiamen interlock plate 61 is fixedly installed on lower cabinet door 600, offers lockhole along the vertical direction on Xiamen interlock plate 61 611, interlocking top plate 62 is in 7 fonts, and interlocking top plate 62 is articulated on operating mechanism 5 along inward-outward direction, and interlocking 62 both ends of top plate can Xiamen interlock plate 61 and ground connection interlock plate 63 are contradicted respectively, and ground connection interlock plate 63 is slideably positioned in operating mechanism 5 along the vertical direction On, ground connection interlock plate 63 extends inwardly contact projection 631, and interlocking 62 upper end of top plate can contradict contact projection 631, contact projection 631 lower sections are provided with lock pillar 632, and lock pillar 632 can pass in and out lockhole 611, be provided with and connect between ground connection interlock plate 63 and operating mechanism 5 Ground interlocks tension spring 633, and ground connection interlocking tension spring 633 forces ground connection 63 upward sliding of interlock plate, and intermediate interlock plate 64 is along the vertical direction It is slideably positioned on operating mechanism 5, intermediate interlocking tension spring 641, centre connection is provided between intermediate interlock plate 64 and operating mechanism 5 Lock tension spring 641 forces intermediate 64 upward sliding of interlock plate, and isolation interlock plate 65 is slideably positioned in operating mechanism 5 along the vertical direction On.Wherein, interlocking top plate both ends be provided with contact disk 621, contact disk 621 make contradict it is more smooth, prevent abrasion and Clamping stagnation.
The workflow of interlocking mechanism is as follows: when lower cabinet door is opened, arc-extinguishing chamber of circuit breaker (is equally applicable to on-load switch to go out Arc chamber 2 ', similarly hereinafter) and disconnecting switch is in gate-dividing state, and circuit interrupter grounding switch is in "on" position, and ground connection interlock plate is joining Under the action of locking tension spring, in the top and ground connection handle hole is blocked, limitation operates circuit interrupter grounding switch;Lower cabinet door When closing, Xiamen interlock plate contradicts interlocking top plate lower end, and interlocking top plate is flipped, and interlocking top plate upper end contradicts contact projection, Make to be grounded interlock plate slide downward, lock pillar enters lockhole, and ground connection handle hole is opened, and can carry out point of circuit interrupter grounding switch at this time Lock operation;Circuit interrupter grounding switchs separating brake, drives intermediate interlock plate slide downward by operating mechanism, until ground connection handle hole and Isolated operation hole is in opening state, can carry out the closing operation of disconnecting switch at this time;Disconnecting switch is closed a floodgate, by operating machine Structure drives intermediate interlock plate slide downward, and until intermediate interlock plate blocks ground connection handle hole, ground connection handle hole is grasped in limitation Make, the closing operation of arc-extinguishing chamber of circuit breaker can be carried out at this time;Arc-extinguishing chamber of circuit breaker closes a floodgate, and drives isolation interlocking by operating mechanism Plate upward sliding, until isolation interlock plate blocks isolated operation hole, limitation operates disconnecting switch.
As shown in Figure 19 to Figure 22, insulating cylinder 7 is used for insulating protection, and for installing arc-extinguishing chamber of circuit breaker 2 and isolation Switch 3;Insulating cylinder 7 includes cylinder 71, extension 72 and arched door section 73, and cylinder 71 is for installing arc-extinguishing chamber of circuit breaker 2, extension 72 are set to 71 top of cylinder, and arched door section 73 is set to 72 top of extension, and arched door section 73 is in arched door shape, and arched door section 73 is used for Disconnecting switch 3 is installed, and disconnecting switch 3 is allowed to pass through;7 lower end of insulating cylinder offers a hinge hole 74, and insulation connecting lever 8 is articulated with In cylinder hinge hole 74, it is provided with an inserts 75 in cylinder hinge hole 74, diametrically extends outward reinforcing rod on cylinder inserts 75 751.Wherein, the first full skirt 721, the full skirt of 721 connector drum 71 of the first full skirt, 73 two sides of arched door section are provided on extension 72 It is provided with the second full skirt 731;751 two sides of reinforcing rod are provided with detent projection.
As shown in FIG. 15 to 18, insulation connecting lever 8 is for connecting arc-extinguishing chamber of circuit breaker 2 and operating mechanism 5, and insulate connecting lever 8 In fold-line-shaped, 8 both ends of connecting lever of insulating offer connecting lever hinge hole 81, and insulation 8 middle section of connecting lever offers mounting hole 82, and insulate connecting lever 8 are articulated in a hinge hole 74 by passing through shaft in mounting hole 82, and connecting lever inserts 83 is set in connecting lever hinge hole 81, is turned Flower piece 84 is arranged on arm inserts 83.Wherein, connecting lever full skirt is provided between the connecting lever hinge hole 81 and mounting hole 82 at both ends 85;Restraining position ring block 831 is set on the outside of connecting lever inserts 83, offers flower trough 841 on the inside of flower piece 84;Connecting lever hinge hole 81 is inclined upwards It moves.
As shown in Figure 7 and Figure 8, it is shown that the structure of 200 different perspectives of on-load switch, on-load switch 200 and breaker 100 Something in common be not repeated to describe, the difference is that, in on-load switch 200 use on-load switch arc-chutes 2 ', And on-load switch arc-chutes 2 ' and the maximum difference of arc-extinguishing chamber of circuit breaker 2 are, on-load switch arc-chutes 2 ' can only cut-off negative Charged current, and the price of on-load switch arc-chutes 2 ' is far below the price of arc-extinguishing chamber of circuit breaker 2, can satisfy different clients Demand.In addition, on-load switch 200 and breaker 100 also reside in the difference of earthing switch, on-load switch 200 is opened using load Close earthing switch 4 '.Specifically, on-load switch earthing switch 4 ' is grounded for on-off;On-load switch earthing switch 4 ' includes the Two grounding contacts 41 ', the second earthing 42 ', the second shaft 43 ', the second pulling plate 44 ' and the second tension spring 45 ';Second grounding contact 41 ' are fixedly installed on 2 ' lower end of on-load switch arc-chutes, and the second earthing 42 ' is fixedly installed in the second shaft 43 ', and second turn Axis 43 ' is rotatably dispose on chassis 1, and the second pulling plate 44 ' is fixedly installed in the second shaft 43 ', and the second tension spring 45 ' is set to Between two pulling plates 44 ' and chassis 1;Second grounding contact 41 ' is claw structure, and the second earthing 42 ' is the hardened structure of hilted broadsword.And it bears Lotus switch earthing switch 4 ' has the advantages that structure is simple, at low cost, is suitable as the earthing switch of on-load switch 200.On the contrary , circuit interrupter grounding switch 4 has the advantages of contact is reliable, sound construction, but relative price is higher, is suitably applied breaker 100, to meet the needs of different clients.
As shown in Figure 9 and Figure 10, it is shown that the structure of 300 different perspectives of combined electrical apparatus, combined electrical apparatus 300 are opened in load It added fuse 9 on the basis of closing 200.Specifically, fuse 9 is for cut-offfing short circuit current;Fuse 9 includes mounting base 91, insulator 92 and fusible core 93,91 upper end of mounting base are fixedly installed on 2 ' lower end of on-load switch arc-chutes, and 91 lower end of mounting base is logical It crosses insulator 92 to be fixedly installed on chassis 1, fusible core 93 is arranged in mounting base 91.
Again due to the limitation of 9 position of fuse, needs to carry out structure of modification to the earthing switch of combined electrical apparatus 300, make it Space can be utilized upper to greatest extent, reduce the volume of combined electrical apparatus 300.Therefore combined electrical apparatus earthing switch 4 " includes that third connects Ground contact 41 ", third earthing 42 ", third shaft 43 ", third pulling plate 44 " and third tension spring 45 ";Third grounding contact 41 " It is fixedly installed on 91 lower end of mounting base, third earthing 42 " is fixedly installed in third shaft 43 ", and the rotation of third shaft 43 " is set Be placed on chassis 1, third pulling plate 44 " is fixedly installed in third shaft 43 ", third tension spring 45 " be set to third pulling plate 44 " and Between chassis 1;Third grounding contact 41 " be claw structure, third earthing 42 " be the hardened structure of hilted broadsword, connect to third knife 42 " from On down card set into third grounding contact 41 ".
The switchgear of above-mentioned three kinds of structures, can according to need and selected.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and Improvement is both fallen in the range of claimed invention.The present invention claims protection scope by appended claims and its Equivalent defines.

Claims (10)

1. a kind of integration on-load switch, it is characterised in that: including chassis, on-load switch arc-chutes, disconnecting switch, on-load switch Earthing switch, operating mechanism, interlocking mechanism, insulating cylinder and insulation connecting lever;
The chassis is used to support, installs the road device arc-chutes, the disconnecting switch, the on-load switch earthing switch, institute It states operating mechanism, the interlocking mechanism, the insulating cylinder and the insulation connecting lever, the chassis and is also used to be fixedly installed in switch On cabinet body;
The operating mechanism drives the on-load switch arc-chutes, the disconnecting switch and the on-load switch earthing switch to carry out Division;
The on-load switch arc-chutes can cut-off load current;
The disconnecting switch is used for isolated power supply;The disconnecting switch includes three groups of isolation knife plates, and the isolation knife plate is four knives Hardened structure, isolation knife plate includes knife plate, hold-down bolt, clamp nut, touch spring and spacer sleeve described in every group, and the knife plate is Four pieces, the hold-down bolt and the clamp nut are two groups, and the hold-down bolt passes through four pieces of knife plate both ends, and passes through The clamp nut is fixed, and the knife plate can slide on the hold-down bolt, is arranged between the knife plate of two pieces of inside There is the touch spring, the touch spring is sheathed on the hold-down bolt, and the touch spring forces described in two pieces of inside Knife plate outside Slideslip is provided with the spacer sleeve between the inside knife plate and the outside knife plate, and the spacer sleeve is arranged In on the hold-down bolt, the spacer sleeve is used to limit the minimum spacing between the inside knife plate and the outside knife plate;
The on-load switch earthing switch is grounded for on-off;The on-load switch earthing switch include the second grounding contact, Second earthing, the second shaft, the second pulling plate and the second tension spring;Second grounding contact is fixedly installed on the on-load switch Arc-chutes lower end, second earthing are fixedly installed in second shaft, and second shaft is rotatably dispose in described On chassis, second pulling plate is fixedly installed in second shaft, second tension spring be set to second pulling plate and Between the chassis;Second grounding contact is claw structure, and second earthing is the hardened structure of hilted broadsword;
The interlocking mechanism is in conjunction with the operating mechanism, for limiting the on-load switch arc-chutes, disconnecting switch, described The operation order of on-load switch earthing switch and lower cabinet door;Ground connection handle hole and isolated operation are provided on the operating mechanism Hole, the ground connection handle hole may pass through operation handle, and for on-load switch earthing switch described in division, the isolated operation hole can Across operation handle, for disconnecting switch described in division;The interlocking mechanism includes Xiamen interlock plate, interlocking top plate, ground connection connection Jam plate, intermediate interlock plate and isolation interlock plate;The Xiamen interlock plate is fixedly installed on lower cabinet door, on the Xiamen interlock plate Lockhole is offered along the vertical direction, and the interlocking top plate is in 7 fonts, and the interlocking top plate is articulated with the operation along inward-outward direction In mechanism, the interlocking top plate both ends can contradict Xiamen interlock plate and the ground connection interlock plate, the ground connection interlock plate edge respectively Vertical direction is slideably positioned on the operating mechanism, and the ground connection interlock plate extends inwardly contact projection, the interlocking top Plate upper end can contradict the contact projection, be provided with lock pillar below the contact projection, the lock pillar can pass in and out the lockhole, institute It states and is provided with ground connection interlocking tension spring between ground connection interlock plate and the operating mechanism, the ground connection interlocking tension spring forces the ground connection Interlock plate upward sliding, the intermediate interlock plate are slideably positioned in along the vertical direction on the operating mechanism, the intermediate interlocking Intermediate interlocking tension spring is provided between plate and the operating mechanism, the intermediate interlocking tension spring forces the intermediate interlock plate upward Sliding, the isolation interlock plate are slideably positioned in along the vertical direction on the operating mechanism;
When the lower cabinet door is opened, the on-load switch arc-chutes and the disconnecting switch are in gate-dividing state, and the load is opened It closes earthing switch and is in "on" position, the ground connection interlock plate in the top and blocks under the action of the interlocking tension spring The ground connection handle hole, limitation operate the on-load switch earthing switch;When the lower cabinet door is closed, the lower couplet on the door Jam plate contradicts the interlocking top plate lower end, and the interlocking top plate is flipped, and it is convex that the interlocking top plate upper end contradicts the contact It rises, makes the ground connection interlock plate slide downward, the lock pillar enters the lockhole, the ground connection handle hole opening, at this time can be into The sub-switching operation of the row on-load switch earthing switch;The on-load switch grounding switch tripping passes through the operating mechanism band The intermediate interlock plate slide downward is moved, until the ground connection handle hole and the isolated operation hole are in opening state, this When can carry out the closing operation of the disconnecting switch;The disconnecting switch is closed a floodgate, and drives the centre by the operating mechanism Interlock plate slide downward, until the intermediate interlock plate blocks the ground connection handle hole, limitation carries out the ground connection handle hole Operation, can carry out the closing operation of the on-load switch arc-chutes at this time;The on-load switch arc-chutes close a floodgate, and pass through the behaviour Make mechanism and drive the isolation interlock plate upward sliding, until the isolation interlock plate blocks the isolated operation hole, limitation pair The disconnecting switch is operated;
The insulating cylinder is used for insulating protection, and for installing the on-load switch arc-chutes and the disconnecting switch;It is described Insulating cylinder includes cylinder, extension and arched door section, and for installing the on-load switch arc-chutes, the extension is set the cylinder It is placed in above the cylinder, the arched door section is set to above the extension, and the arched door section is in arched door shape, the arched door Section allows the disconnecting switch to pass through for installing the disconnecting switch;The insulating cylinder lower end offers a hinge hole, institute It states insulation connecting lever to be articulated in the cylinder hinge hole, is provided with an inserts in the cylinder hinge hole, on the cylinder inserts diametrically Direction extends outward reinforcing rod;
The insulation connecting lever is in broken line for connecting the on-load switch arc-chutes and the operating mechanism, the insulation connecting lever Shape, the insulation connecting lever both ends offer connecting lever hinge hole, and the insulation connecting lever middle section offers mounting hole, the insulation connecting lever It is articulated in the cylinder hinge hole by passing through shaft in the mounting hole, is set to the connecting lever in the connecting lever hinge hole Inserts is arranged with flower piece on the connecting lever inserts.
2. a kind of integrated on-load switch according to claim 1, it is characterised in that: the knife plate front end offers deformation Slot, the knife plate leading inside are provided with arc convex, and the arc convex is two, and is located at deformation slot two sides.
3. a kind of integrated on-load switch according to claim 2, it is characterised in that: the knife plate and the hold-down bolt Between and the knife plate and the clamp nut between be additionally provided with the touch spring, the touch spring of two sides is compeled Make two pieces of inside Slideslips of knife plate in outside;Gasket is provided between the knife plate and the touch spring of two sides.
4. a kind of integrated on-load switch according to claim 1, it is characterised in that: be provided with first on the extension Full skirt, first full skirt connect the full skirt of the cylinder, and arched door section two sides are provided with the second full skirt;The reinforcing rod two Side is provided with detent projection.
5. a kind of integrated on-load switch according to claim 1, it is characterised in that: the connecting lever hinge hole at both ends and Connecting lever full skirt is provided between the mounting hole;Restraining position ring block is set on the outside of the connecting lever inserts, is opened up on the inside of the flower piece There is flower trough;The connecting lever hinge hole is offset up.
6. a kind of on-load switch switchgear, it is characterised in that: including load according to any one of claims 1 to 5 Switch, further includes switch cabinet, upper cabinet door, lower cabinet door, current transformer, voltage sensor and arrester, the upper cabinet door and The lower cabinet door is articulated on front side of the switch cabinet, and the on-load switch is fixedly installed on the left of the switch cabinet, described Current transformer, the voltage sensor and the arrester are fixedly installed on the right side of the switch cabinet, the on-load switch, It is connected between the current transformer, the voltage sensor and the arrester by copper bar.
7. a kind of on-load switch switchgear according to claim 6, it is characterised in that: the switch cabinet height is 1800mm, the switch cabinet width are 500mm, and the switch cabinet depth is 900mm;The switch cabinet is separated into cable Room, bus-bar room and control room are provided with metal partion (metp), may be used also above the control room between the cable vault and the bus-bar room Disassembly is provided with high instrument box, offers threading groove between the high instrument box and the control room.
8. a kind of on-load switch switchgear according to claim 7, it is characterised in that: be provided at the top of the switch cabinet Metallic heat radiating plate.
9. a kind of integrated combination electric appliance, it is characterised in that: including chassis, on-load switch arc-chutes, disconnecting switch, combined electrical apparatus Earthing switch, operating mechanism, interlocking mechanism, insulating cylinder, insulation connecting lever and fuse;
The chassis is used to support, installs the road device arc-chutes, the disconnecting switch, the combined electrical apparatus earthing switch, institute It states operating mechanism, the interlocking mechanism, the insulating cylinder and the insulation connecting lever, the chassis and is also used to be fixedly installed in switch On cabinet body;
The operating mechanism drives the on-load switch arc-chutes, the disconnecting switch and the combined electrical apparatus earthing switch to carry out Division;
The on-load switch arc-chutes can cut-off load current;
The fuse is for cut-offfing short circuit current;The fuse includes mounting base, insulator and fusible core, in the mounting base End is fixedly installed on on-load switch arc-chutes lower end, and the mounting base lower end is fixedly installed on described by the insulator On chassis, the fusible core is arranged in the mounting base;
The disconnecting switch is used for isolated power supply;The disconnecting switch includes three groups of isolation knife plates, and the isolation knife plate is four knives Hardened structure, isolation knife plate includes knife plate, hold-down bolt, clamp nut, touch spring and spacer sleeve described in every group, and the knife plate is Four pieces, the hold-down bolt and the clamp nut are two groups, and the hold-down bolt passes through four pieces of knife plate both ends, and passes through The clamp nut is fixed, and the knife plate can slide on the hold-down bolt, is arranged between the knife plate of two pieces of inside There is the touch spring, the touch spring is sheathed on the hold-down bolt, and the touch spring forces described in two pieces of inside Knife plate outside Slideslip is provided with the spacer sleeve between the inside knife plate and the outside knife plate, and the spacer sleeve is arranged In on the hold-down bolt, the spacer sleeve is used to limit the minimum spacing between the inside knife plate and the outside knife plate;
The combined electrical apparatus earthing switch is grounded for on-off;The combined electrical apparatus earthing switch include third grounding contact, Third earthing, third shaft, third pulling plate and third tension spring;The third grounding contact is fixedly installed on mounting base lower end, The third earthing is fixedly installed in the third shaft, and the third shaft is rotatably dispose on the chassis, described Third pulling plate is fixedly installed in the third shaft, the third tension spring be set to the third pulling plate and the chassis it Between;The third grounding contact is claw structure, and the third earthing is the hardened structure of hilted broadsword, connects to the third knife from upper past Lower card is set in the third grounding contact;
The interlocking mechanism is in conjunction with the operating mechanism, for limiting the on-load switch arc-chutes, disconnecting switch, described The operation order of combined electrical apparatus earthing switch and lower cabinet door;Ground connection handle hole and isolated operation are provided on the operating mechanism Hole, the ground connection handle hole may pass through operation handle, and for combined electrical apparatus earthing switch described in division, the isolated operation hole can Across operation handle, for disconnecting switch described in division;The interlocking mechanism includes Xiamen interlock plate, interlocking top plate, ground connection connection Jam plate, intermediate interlock plate and isolation interlock plate;The Xiamen interlock plate is fixedly installed on lower cabinet door, on the Xiamen interlock plate Lockhole is offered along the vertical direction, and the interlocking top plate is in 7 fonts, and the interlocking top plate is articulated with the operation along inward-outward direction In mechanism, the interlocking top plate both ends can contradict Xiamen interlock plate and the ground connection interlock plate, the ground connection interlock plate edge respectively Vertical direction is slideably positioned on the operating mechanism, and the ground connection interlock plate extends inwardly contact projection, the interlocking top Plate upper end can contradict the contact projection, be provided with lock pillar below the contact projection, the lock pillar can pass in and out the lockhole, institute It states and is provided with ground connection interlocking tension spring between ground connection interlock plate and the operating mechanism, the ground connection interlocking tension spring forces the ground connection Interlock plate upward sliding, the intermediate interlock plate are slideably positioned in along the vertical direction on the operating mechanism, the intermediate interlocking Intermediate interlocking tension spring is provided between plate and the operating mechanism, the intermediate interlocking tension spring forces the intermediate interlock plate upward Sliding, the isolation interlock plate are slideably positioned in along the vertical direction on the operating mechanism;
When the lower cabinet door is opened, the on-load switch arc-chutes and the disconnecting switch are in gate-dividing state, the combination electricity Device earthing switch is in "on" position, and the ground connection interlock plate in the top and blocks under the action of the interlocking tension spring The ground connection handle hole, limitation operate the combined electrical apparatus earthing switch;When the lower cabinet door is closed, the lower couplet on the door Jam plate contradicts the interlocking top plate lower end, and the interlocking top plate is flipped, and it is convex that the interlocking top plate upper end contradicts the contact It rises, makes the ground connection interlock plate slide downward, the lock pillar enters the lockhole, the ground connection handle hole opening, at this time can be into The sub-switching operation of the row combined electrical apparatus earthing switch;The combined electrical apparatus grounding switch tripping passes through the operating mechanism band The intermediate interlock plate slide downward is moved, until the ground connection handle hole and the isolated operation hole are in opening state, this When can carry out the closing operation of the disconnecting switch;The disconnecting switch is closed a floodgate, and drives the centre by the operating mechanism Interlock plate slide downward, until the intermediate interlock plate blocks the ground connection handle hole, limitation carries out the ground connection handle hole Operation, can carry out the closing operation of the on-load switch arc-chutes at this time;The on-load switch arc-chutes close a floodgate, and pass through the behaviour Make mechanism and drive the isolation interlock plate upward sliding, until the isolation interlock plate blocks the isolated operation hole, limitation pair The disconnecting switch is operated;
The insulating cylinder is used for insulating protection, and for installing the on-load switch arc-chutes and the disconnecting switch;It is described Insulating cylinder includes cylinder, extension and arched door section, and for installing the on-load switch arc-chutes, the extension is set the cylinder It is placed in above the cylinder, the arched door section is set to above the extension, and the arched door section is in arched door shape, the arched door Section allows the disconnecting switch to pass through for installing the disconnecting switch;The insulating cylinder lower end offers a hinge hole, institute It states insulation connecting lever to be articulated in the cylinder hinge hole, is provided with an inserts in the cylinder hinge hole, on the cylinder inserts diametrically Direction extends outward reinforcing rod;
The insulation connecting lever is in broken line for connecting the on-load switch arc-chutes and the operating mechanism, the insulation connecting lever Shape, the insulation connecting lever both ends offer connecting lever hinge hole, and the insulation connecting lever middle section offers mounting hole, the insulation connecting lever It is articulated in the cylinder hinge hole by passing through shaft in the mounting hole, is set to the connecting lever in the connecting lever hinge hole Inserts is arranged with flower piece on the connecting lever inserts.
10. a kind of combined electrical apparatus switchgear, it is characterised in that: further include switch including combined electrical apparatus as claimed in claim 9 Cabinet body, upper cabinet door, lower cabinet door, current transformer, voltage sensor and arrester, the upper cabinet door and the lower cabinet door are articulated with On front side of the switch cabinet, the on-load switch is fixedly installed on the left of the switch cabinet, the current transformer, the electricity Pressure sensor and the arrester are fixedly installed on the right side of the switch cabinet, the on-load switch, the current transformer, institute It states and is connected between voltage sensor and the arrester by copper bar.
CN201811638654.1A 2018-12-29 2018-12-29 Integrated load switch, combined electrical apparatus and cubical switchboard Active CN109545612B (en)

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CN204558299U (en) * 2015-05-13 2015-08-12 浙江临高电气实业有限公司 A kind of switch-cabinet grounding interlock
CN104934874A (en) * 2015-07-09 2015-09-23 新疆特变电工自控设备有限公司 Miniaturized composite insulation switch cabinet
WO2016045028A1 (en) * 2014-09-25 2016-03-31 Abb技术有限公司 Vacuum load switch
WO2016065673A1 (en) * 2014-10-29 2016-05-06 浙江道笃智能开关有限公司 Pole type high-voltage electrical appliance combined switch
CN106229210A (en) * 2016-09-29 2016-12-14 协成科技股份有限公司 High voltage load switch fuse combined electric apparatus
CN107731619A (en) * 2017-11-14 2018-02-23 宁波天安智能电网科技股份有限公司 A kind of High aititude indoor HVAC combined vacuum breaker

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104143771A (en) * 2014-08-04 2014-11-12 南通星宇电气有限公司 High-voltage switch board
WO2016045028A1 (en) * 2014-09-25 2016-03-31 Abb技术有限公司 Vacuum load switch
WO2016065673A1 (en) * 2014-10-29 2016-05-06 浙江道笃智能开关有限公司 Pole type high-voltage electrical appliance combined switch
CN204558299U (en) * 2015-05-13 2015-08-12 浙江临高电气实业有限公司 A kind of switch-cabinet grounding interlock
CN104934874A (en) * 2015-07-09 2015-09-23 新疆特变电工自控设备有限公司 Miniaturized composite insulation switch cabinet
CN106229210A (en) * 2016-09-29 2016-12-14 协成科技股份有限公司 High voltage load switch fuse combined electric apparatus
CN107731619A (en) * 2017-11-14 2018-02-23 宁波天安智能电网科技股份有限公司 A kind of High aititude indoor HVAC combined vacuum breaker

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Application publication date: 20190329

Assignee: Ningbo Tianzhi Electric Technology Co.,Ltd.

Assignor: NINGBO TIANAN SMART GRID TECHNOLOGY CO.,LTD.

Contract record no.: X2023980053427

Denomination of invention: An integrated load switch, combined electrical appliance, and switchgear

Granted publication date: 20230905

License type: Common License

Record date: 20231221