CN2924778Y

CN2924778Y - Outdoor 12KV high-voltage drop-off sectionalizer

Info

Publication number: CN2924778Y
Application number: CN 200620058143
Authority: CN
Inventors: 张和生
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-04-25
Filing date: 2006-04-25
Publication date: 2007-07-18
Anticipated expiration: 2016-04-25

Abstract

The utility model relates to an outdoor 12KV high voltage drop-out sectionalizer, which is mainly composed of a silicone rubber pillar insulator, an upper press plate, an arc extinguishing device, a current sensor, a conductive rod, a starter, a lower frame, a contact frame and a lower press plate. The utility model is provided with a skirt brim design with anti-pollution function, which is not vulnerable to the impacts of the environmental temperature and has no time-current characteristic; in addition, the utility model can not only identify and eliminate the transient faults reliably, but also sectionalize and isolate the permanent faults reliably. The practices proves that: the use of the utility model can eliminate more than 90 percent of the interrupted operation faults caused by the use of fuse, thereby saving the search time of the faults.

Description

Outdoor 12KV high-voltage drop type sectionalizer

Technical field

The utility model relates to a kind of outdoor 12KV high-voltage drop type sectionalizer, belongs to the technical field of 10KV distribution power supply unit.

Background technology

10KV distribution supply district is increasing at present, and based on overhead transmission line, the trunk line length, branched line is many.Because outdoor condition, the circuit environment is relatively poor, and the unfavorable factor of serious threat power supply safety is a lot, and for example: the probability that cause the accident such as branch, kite, birds, civil buildings, natural calamity, thunderbolt are very high.Show that according to statistics accounting for the fault of whole line fault more than 90 percent is transient fault.Eliminate the influence of transient fault, the part of path of the permanent fault that segmentation occurs, the reliability that improves the line powering ability is the difficult problem that the power transmission and distribution industry is badly in need of solution.The drop type sectionalizer that adopts in the existing circuit, the shirt rim for not possessing anti-pollution function that its insulation is supported is designed, and be vulnerable to the influence of ambient temperature and be difficult to guarantee necessary operational reliability, one second characteristic of the peace of fuse selects to cause very big difficulty to the supporting parameters of electric power of circuit operation, to such an extent as in having stipulated the part branched line of fault current, be difficult to adopt fuse to cooperate operation.More worth what propose is that existing fuse can't be distinguished transient fault or permanent fault, also just can't eliminate the transient faults of a large amount of appearance of circuit, thereby be difficult to guarantee the normal operation of circuit.In addition, it is very difficult that the circuit operations staff searches the fault point.Thereby branch line fault more often, cause having a power failure completely, influence bigger, the loss height.

Summary of the invention

In order to overcome above-mentioned shortcoming, the purpose of this utility model is that a kind of outdoor 12KV high-voltage drop type sectionalizer will be provided, and is neither easily influenced by ambient temperature, do not pacify a wonderful characteristic again; Can discern and eliminate transient fault reliably, again reliably segmentation isolate permanent fault have an anti-pollution function high-voltage drop type sectionalizer.

For reaching above-mentioned purpose, the technical solution adopted in the utility model is: the top board 3 of sectionalizer is fixed in rain cover 4 with bolt 21, arc extinguishing support 22 is connected with fixed contact 7 with moving contact 8, arc-control device 25 is contained on the arc extinguishing support 22, and arc-control device 25 comprises arc-extinguish chamber 5, arc extinguishing blade 6 and arcing contact 23; Current sensor 9 is sleeved on the conducting rod 11, separating brake hook 10 is contained in conducting rod 11 tops, starter 13 is contained in conducting rod 11 bottoms, be connected with separating brake pallet 12, separating brake pallet 12 is positioned at conducting rod 11 belows, wiring pad 29 is housed on the lower carriage 16, and lower platen 18 usefulness bolt and nuts 28 are fixed in buffer spring 17, water conservancy diversion row 15 rear side of lower carriage 16; Do insulation with silicon rubber insulation pillar 2 between lower platen 18 and the top board 3 and support, and be connected with silicon rubber insulation pillar 2 with bolt 20 by bolt 19 respectively; The middle part of silicon rubber insulation pillar 2 is a mounting bracket 1.

The beneficial effects of the utility model are:

Ambient temperature is from 45 ℃ of high temperature, low temperature-25 ℃, and wind speed 30 meter per seconds all can show good operational reliability;

Owing to only an electric current that uses circuit is played supervisory function bit, the power transmission and transforming equipment that can match according to the fault current parameters selection does not easily in actual use have the peace of the time of electrical current heat effect effect-second characteristic.Thereby widened the scope of application, make part can not adopt the circuit of fuse also can use the utility model;

Can remember line fault circuit number of times accurately and reliably, identification transient fault and in time resetting with normal operation; According to the fault current number of times of memory, automatic brake separating under no-voltage or no current state; Isolate the circuit that permanent fault occurs reliably, thereby the unnecessary outage of having avoided using fuse switch more than 90% and having occurred improves the power distribution network operational reliability, reduces interruption duration and number of times, isolate rapidly and the removing fault point, guarantee that the fault-free section recovers normal power supply;

Can send the electricity operation by on-load.

Description of drawings

Fig. 1 is the utility model agent structure schematic diagram.

Embodiment

In Fig. 1, the utility model is mainly by silicon rubber post insulator 2, top board 3, and arc-control device 25, current sensor 9, conducting rod 11, starter 13, lower carriage 16 touches support 26, and lower platen 18 is formed.

Top board 3 with bolt 21 be fixed in rain cover 4,, arc extinguishing support 22 is connected with fixed contact 7 with moving contact 8, arc-control device 25 is contained on the arc extinguishing support 22, arc-control device 25 comprises arc-extinguish chamber 5, arc extinguishing blade 6 and arcing contact 23.

Moving contact 8 and separating brake hook 10 are fixed in conducting rod 11 neck both sides.On/off switch stage clip 24 is housed on the moving contact 8, and on/off switch stage clip 24 1 ends are connected in arc extinguishing blade 6; Current sensor 9 is sleeved on conducting rod 11 middle parts, the electronic circuit control board that links to each other with current sensor 9 is positioned at the inner chamber of conducting rod 11, electronic circuit board has from current sensor 9 and obtains the ability that current signal changes and can count and remember fault current, and circuits for triggering can trigger starter work, and starter 13 has selected for use direct current to trigger electric cap; Conducting rod 11 bottoms have separating brake pallet 12 to be connected with load hook 14; The end of starter 13 adopts helicitic texture to be fixed in the neck of separating brake pallet 12, and base portion is drawn lead and is connected in electronic circuit control board through conducting rod 11 inner chambers; Wiring pad 29 is housed on the lower carriage 16, and lower platen 18 usefulness bolt and nuts 28 are fixed in buffer spring 17, water conservancy diversion row 15 rear side of lower carriage 16; Do insulation with silicon rubber insulation pillar 2 between lower platen 18 and the top board 3 and support, and be connected with silicon rubber insulation pillar 2 with bolt 20 by bolt 19 respectively; The alternate antifouling formula shirt rim design of diameter is adopted in the shirt rim of silicon rubber insulation pillar 2, and the middle part is a mounting bracket 1.

The utility model is used for the distribution transmission line, and line current is through inlet wire 27, fixed contact 7, moving contact 8, conducting rod 11, separating brake pallet 12, separating brake hook 14, and water conservancy diversion row 15, lower carriage 16, wiring pad 29 normally move.When circuit occurs greater than normal rating failure of the current electric current, current sensor 9 induces the fault-signal electric current and sends electronic circuit control board to, this signal is after rectification, start with door～or gate logic compare, follow switch trip in the upper level main line, electric current in the circuit is temporarily eliminated, and electronic circuit control board is finished once counting.Switch carries out reclosing in the upper level main line.If the form of fault current is a transient fault in the circuit, then switch reclosures success in the upper level main line, after the memory time above regulation, electronic circuit control board no longer keeps the fault current memory of appearance for the first time, preceding state occurs but return to fault current, carry out normal power supply; If what occur in the circuit is permanent fault, even then the switch in the upper level main line closes, the inevitable electric current that breaks down once more, switch in the upper level main line is tripping operation again, electric current is temporary transient again in the circuit eliminates, electronic circuit control board carries out the counting second time, export a signal code then and trigger the starter action to starter 13, the impulsive force that produces ejects separating brake pallet 12, conducting rod 11 outer commentaries on classics, the moving contact 8 on conducting rod top separates with fixed contact 7, thereby the out of order branched line that the utility model sectionalizer will be housed is reliably separated from main line.After separating brake pallet 12 ejects, conducting rod 11 outer commentaries on classics, under the effect of deadweight, fall, be subjected to after stopping of buffer spring 17 hang from above, use electrician's Job Operations rod to choose load hook 14 and can take off conducting rod easily, unload with helicitic texture and be installed in starter 13 on the separating brake pallet 12, replace with new starter, electricity consumption work industry hook stick is chosen load hook 14, put into the groove of lower carriage 16, promote separating brake hook 10 then, make moving contact 8, fixed contact 7 clamping of closing is good, realizes the normal operation of circuit.

In the rated load scope, electricity consumption work industry hook stick hooks separating brake hook 10 and directly draws back downwards and can finish the separating brake action.

In implementation process material select for use with processes and the assembling all identical with existing outdoor high-voltage drop type fuse.

Claims

1, a kind of outdoor 12KV high-voltage drop type sectionalizer, it is characterized in that, the top board of sectionalizer (3) is fixed in rain cover (4) with bolt (21), arc extinguishing support (22) is connected with fixed contact (7) with moving contact (8), arc-control device (25) is contained on the arc extinguishing support (22), and arc-control device (25) comprises arc-extinguish chamber (5), arc extinguishing blade (6) and arcing contact (23); Current sensor (9) is sleeved on the conducting rod (11), separating brake hook (10) is contained in conducting rod (11) top, starter (13) is contained in conducting rod (11) bottom, be connected with separating brake pallet (12), separating brake pallet (12) is positioned at conducting rod (11) below, wiring pad (29) is housed on the lower carriage (16), and lower platen (18) is fixed in buffer spring (17), water conservancy diversion row (15) with bolt and nut (28) rear side of lower carriage (16); Do insulation with silicon rubber insulation pillar (2) between lower platen (18) and the top board (3) and support, and be connected with silicon rubber insulation pillar (2) with bolt (20) by bolt (19) respectively; The middle part of silicon rubber insulation pillar (2) is a mounting bracket (1).

2, outdoor 12KV high-voltage drop type sectionalizer according to claim 1 is characterized in that, the alternate antifouling formula shirt rim design of diameter is adopted in the shirt rim of described silicon rubber insulation pillar (2).