CN102222868B - Solid insulating vacuum ring network cabinet - Google Patents

Solid insulating vacuum ring network cabinet Download PDF

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Publication number
CN102222868B
CN102222868B CN 201110168443 CN201110168443A CN102222868B CN 102222868 B CN102222868 B CN 102222868B CN 201110168443 CN201110168443 CN 201110168443 CN 201110168443 A CN201110168443 A CN 201110168443A CN 102222868 B CN102222868 B CN 102222868B
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Prior art keywords
switch
pole
vacuum
isolating switch
earthed
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CN 201110168443
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CN102222868A (en
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鲁晓东
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SHANGHAI THEHAO ELECTRIC POWER TECHNOLOGY Co.,Ltd.
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SHANGHAI THEHAO ELECTRIC POWER TECHNOLOGY Co Ltd
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Abstract

The invention provides a solid insulating vacuum ring network cabinet comprising at least one wire inlet ring network cabinet and at least one wire outlet ring network cabinet, wherein the wire inlet ring network cabinet is assembled on a cabinet body by a vacuum switch unit through screws so as to form the whole wire inlet ring main unit; the wire outlet ring network cabinet is formed by assembling the vacuum switch unit and a fuse tripping interlocking device on the cabinet body through screws; a fuse cylinder component is arranged at the position in the vacuum switch unit at which a polar column assembling plug is securely sealed. The solid insulating vacuum ring network cabinet has the advantages that harmful substances are not generated during the working process; furthermore, all parts can be reclaimed after achieving the service life; and the environment-friendly requirement is adapted. All charged bodies are placed or arranged in epoxy resin; the electric performance of the ring network cabinet is not affected by external environments such as vapor, dust and the like; and the maintenance quantity is little and the service life is long. As charged bodies are all arranged in the epoxy resin, semiconductor substance is sprayed outside the epoxy resin; and the induction voltage is grounded; therefore, even when a user contacts with the ring network cabinet, the electric shock accident does not occur, and the safety of equipment is improved.

Description

Solid isolated vacuum ring main unit
Technical field
The present invention is a kind of novel solid insulation ring main unit.Belong to the high-tension distribution equipment technical field.
Technical background
The ring main unit majority is the gas-insulated ring main unit at present.Adopt SF6 gas as the insulation of electrification in high voltage part or cut-off medium.Because SF6 gas can decomposite toxic gas after cut-offfing, and easily leaks, to the seal request height and the processing technology complexity of casing, cause the gas-insulated ring main unit to safeguard that detection is complicated, need also make-up gas of leak detection regularly.In addition according to Kyoto Protocol, as the insulation of gas-insulated ring main unit or cut-off medium, SF6 gas is clearly classified as one of greenhouse gases, requires to reduce its use amount.
Summary of the invention
What the present invention proposed is a kind of novel solid insulation ring main unit, and its purpose is to overcome the above-mentioned defective of existing in prior technology, has that volume is little, environment-friendly type, function is integrated, reliability is high, characteristics such as non-maintaining.
Technical solution of the present invention: it is characterized in that comprising at least one road inlet wire ring main unit and at least one road outlet ring main unit, the structure of described inlet wire ring main unit is installed in by screw by vacuum switch unit forms whole inlet wire ring main unit on the cabinet; Described outlet ring main unit is that vacuum switch unit, fuse dropout interlock are installed in cabinet by screw, and the fuse canister assembly is installed on the position of the former installation plug of pole in the vacuum switch list.
Advantage of the present invention: owing to adopted totally-enclosed solid isolated vacuum switch, can not produce harmful substance in the course of the work, and all parts reach all recyclable after useful life, greatly improve the feature of environmental protection of product, adapt to the environmental protection demand.Because all electrified bodies are all poured into a mould or are installed in the epoxy resin, can not be subjected to as the influence of external environment conditions such as steam, dust to the electric property of ring main unit.Reduced equipment maintenance, prolonged useful life.Because electrified body is all in epoxy resin inside, and the place that might produce induced voltage there is semiconductor substance in the epoxy resin external spray, with induced voltage ground connection,, improved the fail safe of equipment by this material even the people touches also and can not produce Danger Electric shock risk like this.
Description of drawings:
Accompanying drawing 1 is the structure chart of the inlet wire ring main unit of solid isolated vacuum ring main unit.
Accompanying drawing 2 is structure charts of the outlet ring main unit of solid isolated vacuum ring main unit.
Accompanying drawing 3 is vacuum switch unit structure charts of the inlet wire ring main unit of solid isolated vacuum ring main unit.
Accompanying drawing 4 is vacuum switch unit structure charts of the outlet ring main unit of solid isolated vacuum ring main unit.
Accompanying drawing 5 is 2 road inlet wire ring main units and 1 tunnel outlet ring main unit assembling schematic diagram.
Among the figure 1 is vacuum switch unit, the 2nd, cabinet, the 3rd, fuse dropout interlock, the 4th, the fuse canister assembly, the 5th, isolating switch and earthed switch powder operation device, the 6th, the Magnetic Actuator for Vacuum Circuit Breaker device, the 7th, the isolating switch moving contact component, the 8th, A isolating switch moving contact, the 9th, B isolating switch moving contact, the 10th, the earthed switch moving contact, the 11st, spring touch finger, the 12nd, static contact isolation switch, the 13rd, the isolation earthing switch fixed contact, the 14th, sealing shroud, the 15th, A phase bus, the 16th, B phase bus, the 17th, C phase bus, the 18th, plug, the 19th, the pole electric-conductor, the 20th, vacuum interrupter, the 21st, straight-through current transformer, the 22nd, be flexible coupling, the 23rd, the cable outlet awl, the 24th, pole, the 25th, arc control device actuating insulated tension pole, the 26th, the operating mechanism chamber, the 27th, the inlet wire ring main unit, the 28th, the outlet ring main unit, the 29th, pressure relief device.
Embodiment
Contrast accompanying drawing 1, the structure of inlet wire ring main unit is installed in by screw by vacuum switch unit 1 forms whole inlet wire ring main unit on the cabinet 2.
Contrast accompanying drawing 2, the structure of outlet ring main unit is to comprise vacuum switch unit 1, cabinet 2, fuse dropout interlock 3, fuse canister assembly 4, wherein vacuum switch unit 1, fuse dropout interlock 3 are installed on the cabinet 2 by screw, and fuse canister assembly 4 is installed on the position of the former installation plug of pole in the vacuum switch unit 1.
Contrast accompanying drawing 3, vacuum switch unit 1 its structure that is used for the inlet wire ring main unit comprises pole 24 and operating mechanism chamber 26 two parts, pole 24 totally 3 is installed in the bottom of operating mechanism chamber 26 by screw by the left, center, right order, and 3 poles 24 form an airtight space with operating mechanism chamber 26.
Described pole 24 is the shaped pieces that have cavity that formed by poured with epoxy resin, the end of the quiet end of the vacuum interrupter 20 on pole 24 1 ends by screw and pole electric-conductor 19 links together and is cast in the epoxy resin, the other end at pole electric-conductor 19 forms each tubbiness leading-out terminal up and down, wherein go up the tubbiness leading-out terminal and bore 23 usefulness for the stube cable outlet, following tubbiness leading-out terminal is for connecting lightning arrester, voltage transformer usefulness; Also form a tubbiness leading-out terminal at pole 24 other ends, for connecting A phase bus 15, B phase bus 16, C phase bus 17 usefulness.
Be equipped with in the pole 24 and the isolating switch major loop of Direct Action Type and the earthed switch major loop of Direct Action Type, and Direct Action Type isolating switch major loop and shared 1 fixed contact of earthed switch major loop.
The front portion of described operating mechanism chamber 26 is provided with isolator operating mechanism, earthed switch operating mechanism and circuit breaker operation mechanism; The rear portion of operating mechanism chamber 26 is equipped with isolating switch and earthed switch powder operation device 5, Magnetic Actuator for Vacuum Circuit Breaker device 6; Be provided with pressure relief device 29 in the rear end of operating mechanism chamber 26, guarantee that the immense pressure that raises suddenly when major loop breaks down can discharge, and guarantees personal safety.
Cable outlet awl 23 is formed by poured with epoxy resin, cable outlet is bored 23 inside and is cast with L type copper rod as electric conductor, bore 23 appearances at cable outlet and be cast with 1 aluminum pipe cylindraceous, and the semiconductor of spray one deck 0.5mm is powered to electrification display from this aluminum pipe position to the upper end fixing hole as induction coil.If ring main unit is not installed electrification display as long as connect an earth connection with its ground connection at the fixing hole place with screw.
The main conductive circuit of vacuum vacuum switch unit 1 is constructed as follows:
Cable outlet awl 23 is screwed the upper end tubbiness leading-out terminal at pole electric-conductor 19 places pole 24 in, when fastening, simultaneously sealing shroud 14 pole tubbiness leading-out terminals and cable outlet is bored between 23; By compressing the electric insulation that sealing shroud 14 guarantees between the two; The lower end tubbiness leading-out terminal at pole electric-conductor 19 places is clamp-oned plug 18, guarantees electric insulation herein; Do the electric current metering if desired, before cable outlet awl 23 is installed, straight-through current transformer 21 skies are enclosed within on the cable outlet awl 23.The quiet end of the other end of pole electric-conductor 19 and vacuum interrupter 20 links together.The moved end end face of vacuum interrupter 20 is placed and is flexible coupling 22, the end of thread of arc control device actuating insulated tension pole 25 is screwed in the screwed hole of moved end of vacuum interrupter 20, and compresses and be flexible coupling 22, guarantees that conduction is reliable.The other end of arc control device actuating insulated tension pole 25 and Magnetic Actuator for Vacuum Circuit Breaker device 6 are connected by screw.Drive 25 motions of arc control device actuating insulated tension pole when when motion under the drive of vacuum switch powder operation device 6 at operating mechanism, drive the moved end motion of vacuum interrupter 20 then, realize vacuum switch deciliter.Be flexible coupling 22 and isolation earthing switch fixed contact 13 be installed on the pole 24 by screw.3 spring touch fingers 11 are installed in the interior slotted eye of isolation earthing switch fixed contact 13 inner chambers.Static contact isolation switch 12 is by being installed in the tubbiness leading-out terminal reverse side of pole 24 other ends, and 3 connect A phase bus 15, B phase bus 16, C phase bus 17 mutually respectively in the left, center, right by screw, when connecting, with 3 sealing shroud 14 is installed between bus mutually at the tubbiness leading-out terminal, by compressing sealing shroud 14, guarantee electric insulation between the two.
Isolating switch moving contact component 7 is copper conductors that A isolating switch moving contact 8, B isolating switch moving contact 9 are installed by two ends, and the copper conductor middle part is connected with insulating bar and forms.The other end of insulating bar is connected the output of isolating switch and earthed switch powder operation device 5.Isolating switch moving contact component 7 is directly moving up and down under 5 effects of isolating switch and earthed switch powder operation device, and that can realize isolating closes the branch function.Move downward A isolating switch moving contact 8 and static contact isolation switch 12 peripheries when isolating moving contact component 7 at isolating switch and earthed switch powder operation device 5, B isolating switch moving contact 9 and isolation earthing switch fixed contact 13 peripheries are finished the isolating switch closing operation after inserting and contacting, vice versa, finish the branch operation (the upper isolating switch branch position that is changed to of Fig. 3) of isolating switch, this moment, the A isolation fracture produced between static contact isolation switch 12 and isolation earthing switch fixed contact 13, at static contact isolation switch 12, isolation earthing switch fixed contact 13 and A isolating switch moving contact 8, form indirect B isolation fracture between the B isolating switch moving contact 9, the indirect double break mouth of isolating switch of the present invention so promptly produces.
Earthed switch moving contact 10 is copper rods, during installation the one end is inserted in the endoporus of isolating switch moving contact 9, and the other end is connected with earthed switch powder operation device 5 with isolating switch by screw rod.Earthed switch moving contact 10 under the effect of isolating switch and earthed switch powder operation device 5 straight moving up and down finish ground connection close the branch function.Earthed switch moving contact 10 moves downward under isolating switch and 5 effects of earthed switch powder operation device, when earthed switch moving contact 10 inserts isolation earthing switch fixed contact 13 inner chambers also by 11 realizations of compression spring touch finger and after isolation earthing switch fixed contact 13 contacts, finish the earthed switch closing operation, vice versa, finishes the branch operation (the upper earthed switch branch position that is changed to of Fig. 3) of earthed switch.
The action of isolating switch and earthed switch major loop is up and down Direct Action Type, and the mutual locking between isolating switch and earthed switch powder operation device 5 are provided with, and isolation earthing switch fixed contact 13 is isolating switch and the shared fixed contact of earthed switch.
Be provided with locking between isolating switch and earthed switch powder operation device 5 and the Magnetic Actuator for Vacuum Circuit Breaker device 6, only guaranteeing when vacuum switch is in the separating brake position could the actuating isolating switch; Could operate vacuum switch when having only isolating switch to be in combined floodgate or earthing position.
When the vacuum switch is worked main conductive circuit by cable outlet awl 23, pole 24, be flexible coupling 22, isolation earthing switch fixed contact 13, A isolating switch moving contact 8, isolating switch moving contact component 7, B isolating switch moving contact 9, form mutually by one of bus 15, B phase bus 16, C phase bus 17 with A for static contact isolation switch 12.
Contrast accompanying drawing 4, vacuum switch unit 1 its structure that is used for the outlet ring main unit is removed cable outlet awl 23 on the structure that is used for the inlet wire ring main unit, and with screw fuse canister assembly 4 is installed at the tubbiness leading-out terminal at former installation plug 18 places, and while installation sealing shroud 14 between fuse canister assembly 4 and tubbiness leading-out terminal, by compressing sealing shroud 14, guarantee electric insulation between the two.Bore 23 places at former installation cable outlet and clamp-on plug 18, guarantee electric insulation herein.Fuse dropout interlock 3 is installed on the front end of fuse canister assembly 4, and passes through screw with cabinet 2.The fuse striker ejects when running into fault, drives fuse dropout interlock 3, drives the Magnetic Actuator for Vacuum Circuit Breaker mechanism action then, makes the vacuum switch separating brake, realizes the protection action.
Contrast accompanying drawing 5,2 road inlet wire ring main units 27 and 1 tunnel outlet ring main unit 28 link together by hold-down screw between cabinet.With screw with connection bus between cabinet and the A of each cabinet composition bulk loop that links together between bus 15, B phase bus 16, the C phase bus 17 mutually.
All electrified bodies of the present invention all place in the pole 24, and interface all connects by sealing shroud 14, has avoided exposing of electrified body, have that volume is little, an environment-friendly type, advantages such as function is integrated, reliability is high, non-maintaining, solid insulation.

Claims (5)

1. solid isolated vacuum ring main unit is characterized in that comprising at least one road inlet wire ring main unit and at least one road outlet ring main unit, and the structure of described inlet wire ring main unit is installed in by screw by vacuum switch unit forms whole inlet wire ring main unit on the cabinet; Described outlet ring main unit is that vacuum switch unit, fuse dropout interlock are installed in cabinet by screw, and the fuse canister assembly is installed on the position of the former installation plug of pole in the vacuum switch unit; The structure of described vacuum switch unit comprises pole and operating mechanism chamber two parts, and pole totally 3 is installed in the bottom of operating mechanism chamber by screw by the left, center, right order, and 3 poles and operating mechanism chamber form an airtight space; Described pole is the shaped piece that has cavity that is formed by poured with epoxy resin, the end of the quiet end of the vacuum interrupter on pole one end by screw and pole electric-conductor links together and is cast in the epoxy resin, form tubbiness leading-out terminal and following tubbiness leading-out terminal at the other end of pole electric-conductor, attached cable outlet awl on last tubbiness leading-out terminal; Also form a tubbiness leading-out terminal at the pole other end; Described cable outlet awl be screwed in pole pole electric-conductor place on the tubbiness leading-out terminal, sealing shroud is contained between pole tubbiness leading-out terminal and the cable outlet awl in fastening; The lower end tubbiness leading-out terminal at pole electric-conductor place is clamp-oned plug, and the straight-through current transformer sky is enclosed within on the cable outlet awl; The moved end end face of vacuum interrupter is placed and is flexible coupling, the end of thread of arc control device actuating insulated tension pole is screwed in the screwed hole of moved end of vacuum interrupter, and compress and be flexible coupling, the other end of arc control device actuating insulated tension pole is connected by screw with the Magnetic Actuator for Vacuum Circuit Breaker device, when moving under the drive of vacuum switch powder operation device at operating mechanism, drive the motion of arc control device actuating insulated tension pole, then drive the moved end motion of vacuum interrupter, realize vacuum switch deciliter; Be flexible coupling and the isolation earthing switch fixed contact be installed on the pole by screw; 3 spring touch fingers are installed in the interior slotted eye of isolation earthing switch fixed contact inner chamber; Static contact isolation switch is by being installed in the tubbiness leading-out terminal reverse side of the pole other end, and 3 connects A phase bus, B phase bus, C phase bus mutually respectively by screw in the left, center, right, with 3 sealing shroud is installed between bus mutually at the tubbiness leading-out terminal when connecting; The isolating switch moving contact component is the copper conductor that two ends are equipped with A isolating switch moving contact, B isolating switch moving contact, and the copper conductor middle part is connected with insulating bar; The other end of insulating bar is connected the output of isolating switch and earthed switch powder operation device; The isolating switch moving contact component is directly moving up and down under isolating switch and the effect of earthed switch powder operation device, and that can realize isolating closes the branch function; When the isolating switch moving contact component moves downward A isolating switch moving contact and static contact isolation switch periphery at isolating switch and earthed switch powder operation device, B isolating switch moving contact and isolation earthing switch fixed contact periphery are finished the isolating switch closing operation after inserting and contacting, vice versa, finish the branch operation of isolating switch, this moment, the A isolation fracture produced between static contact isolation switch and isolation earthing switch fixed contact, at static contact isolation switch, isolation earthing switch fixed contact and A isolating switch moving contact, form indirect B isolation fracture between the B isolating switch moving contact.
2. solid isolated vacuum ring main unit according to claim 1, it is characterized in that being equipped with in the pole isolating switch major loop of Direct Action Type and the earthed switch major loop of Direct Action Type, and Direct Action Type isolating switch major loop and shared 1 fixed contact of earthed switch major loop.
3. solid isolated vacuum ring main unit according to claim 1 is characterized in that the front portion of operating mechanism chamber is provided with isolator operating mechanism, earthed switch operating mechanism and circuit breaker operation mechanism; The rear portion of operating mechanism chamber is equipped with isolating switch and earthed switch powder operation device, Magnetic Actuator for Vacuum Circuit Breaker device; Rear end in the operating mechanism chamber is provided with pressure relief device.
4. solid isolated vacuum ring main unit according to claim 1, it is characterized in that the cable outlet awl is formed by poured with epoxy resin, cable outlet awl inside is cast with L type copper rod as electric conductor, be cast with 1 aluminum pipe cylindraceous as induction coil in cable outlet awl appearance, and the semiconductor of spray one deck 0.5mm is powered to electrification display from this aluminum pipe position to the upper end fixing hole.
5. solid isolated vacuum ring main unit according to claim 4, it is characterized in that being inserted with in the endoporus of B isolating switch moving contact an end of earthed switch moving contact, the other end of earthed switch moving contact is connected with the earthed switch powder operation device with isolating switch by screw rod; The earthed switch moving contact under the effect of isolating switch and earthed switch powder operation device straight moving up and down finish ground connection close the branch function; The earthed switch moving contact moves downward under isolating switch and the effect of earthed switch powder operation device, when the earthed switch moving contact inserts isolation earthing switch fixed contact inner chamber also by the realization of compression spring touch finger and after the isolation earthing switch fixed contact contacts, finish the earthed switch closing operation, vice versa, finishes the branch operation of earthed switch; The action of isolating switch and earthed switch major loop is Direct Action Type up and down, and is provided with mutual locking device between isolating switch and earthed switch powder operation device, and the isolation earthing switch fixed contact is isolating switch and the shared fixed contact of earthed switch; Be provided with locking device between isolating switch and earthed switch powder operation device and the Magnetic Actuator for Vacuum Circuit Breaker device.
CN 201110168443 2011-06-22 2011-06-22 Solid insulating vacuum ring network cabinet Active CN102222868B (en)

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Families Citing this family (8)

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CN102386567A (en) * 2011-12-16 2012-03-21 常州瑞联电力科技有限公司 Fuse device
CN102820626B (en) * 2012-08-20 2015-04-08 西安西能电器新技术发展有限公司 Solid insulation vacuum ring-network cabinet
CN103296606A (en) * 2013-06-08 2013-09-11 扬州新概念电气有限公司 Multi-functional solid seal assembly
CN104269210A (en) * 2014-09-12 2015-01-07 中国能源建设集团镇江华东电力设备制造厂 Insulation casting bus bar with zero potential on outer surface
CN105119178A (en) * 2015-07-28 2015-12-02 江苏南瑞泰事达电气有限公司 24kV switch cabinet
CN105914639B (en) * 2016-06-14 2018-01-05 河北箱变电器有限公司 A kind of solid insulation ring main unit
CN110391602A (en) * 2019-08-29 2019-10-29 吴晨 Automatic switch cabinet
CN111146725B (en) * 2020-01-03 2021-11-12 北京中车赛德铁道电气科技有限公司 Solid insulation integrated high-voltage electric box of vehicle-mounted high-voltage electric appliance

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