CN2096814U

CN2096814U - Fall type subsector

Info

Publication number: CN2096814U
Application number: CN 91207679
Authority: CN
Inventors: 汤永春; 徐腊元; 李大明; 李鸿儒; 赵学文
Original assignee: ELECTRICAL APPLIANCES FACTORY ZHENJIANG CITY
Current assignee: ELECTRICAL APPLIANCES FACTORY ZHENJIANG CITY
Priority date: 1991-05-07
Filing date: 1991-05-07
Publication date: 1992-02-19

Abstract

The utility model discloses a fall type subsector. The utility model can not be easily influenced by environmental temperature, and does not have ampere-second characteristics. The utility model can be used for reliably identifying and eliminating instant malfunctions, and can be used for reliably breaking and isolating permanent malfunctions. The utility model is characterized in that a mutual inductor is sheathed on a fall current carrying tube; an electronic circuit control panel capable of memorizing and counting, which is matched with the mutual inductor, is arranged in the tube; an explosion starter which is matched with the electronic circuit control panel is fixed on a loading switch at the lower end of the tube, and the explosion starter can be started when a permanent malfunction occurs only. Actual tests indicate that more than 90% unnecessary interruption running due to the use of fuses can be avoided by using the utility model, and accordingly, malfunction seeking and other circuit maintenances can be saved.

Description

Fall type subsector

The drop type sectionalizer.

The utility model relates to outdoor high-voltage used for transmission line automatic brake separating switchgear, particularly a kind of drop type sectionalizer.Ultra-high-tension power transmission line is in service out of doors, and because of natural conditions such as thunder and lightning, wind and rain change the transient fault cause circuit to occur, data shows and accounts for more than 90 percent of whole line fault according to statistics.Eliminate the influence of transient fault, the part of path of permanent fault appears in disjunction, is one of electric power power transmission and transformation industry difficult problem anxious to be solved thereby improve the circuit reliability of operation.The fuse switch that adopts in the existing circuit often is vulnerable to the influence of ambient temperature and is difficult to guarantee necessary operational reliability; And the ampere-second characteristic of fuse selects to cause difficulty to the supporting power equipment parameter of circuit operation, so that be difficult to adopt fuse to cooperate operation in having stipulated the part branched line of fault current; It is worthy of note that more existing fuse can't distinguish transient fault or permanent fault, also just can't eliminate a large amount of transient fault that occurs in the circuit, thereby be difficult to guarantee the normal operation of circuit.This shows, design and a kind ofly be difficult for influenced by ambient temperaturely, do not have ampere-second characteristic, and can discern and eliminate transient fault reliably, permanent fault is isolated in disjunction reliably again, thereby the automatic brake separating switchgear that guarantees the normal operation of non-fault line is very for necessary.

To be that design is a kind of be difficult for influenced by ambient temperaturely the purpose of this utility model, do not have ampere-second characteristic, and can discern and eliminate transient fault reliably, and the drop type sectionalizer of permanent fault is isolated in disjunction reliably again.

The technical solution of the utility model is: a kind of by installing component, porcelain vase, conductive shield, fall the drop type sectionalizer that current-carrying tube, bearing are formed, it is characterized in that falling the current-carrying tube periphery and be with instrument transformer, fall the current-carrying tube inner chamber and be equipped with the electronic circuit control board that matches with instrument transformer, fall in the rotating shaft of current-carrying tube lower end and be linked with the load lock versatilely, connect the jump ring sheet on the body of being fixed in that cooperates with the load brake clip, be fixed with the exploder that matches with electronic circuit control board on the load lock:

---conductive shield is screwed in the porcelain vase upper end, includes Contact Cover, touches reed and assembling bolt and inlet wire bolt;

---fall current-carrying tube include body, be fixed in the contact and the hook of body neck both sides, the load bolt that is fixed in the body bottom and lower end rotating shaft, be fixed in the fulcrum of load lock bottom;

---bearing includes the end and has screw and the buffer spring that bearing body, bearing body base designs that groove cooperates with the fulcrum clamping have coupling bolt, coupling bolt connecting to be disposed at the porcelain vase bottom, and design has the outlet bolt on the bearing body;

---the end of exploder adopts helicitic texture to be fixed in load lock neck, and base portion is drawn lead and is connected on the electronic circuit control board through tube cavity;

---electric line control making sheet is selected for use to have from instrument transformer and is obtained current changing signal and counting is arranged and the circuit control board of memory and circuits for triggering.

When the drop type sectionalizer that the utility model implements to obtain is used in the transmission line, line current through inlet wire bolt 3-5, touch reed 3-3, body 4-1, load lock 9, fulcrum 4-5, bearing body 5-1, outlet bolt 5-5 normally moves.When circuit occurs greater than normal rating failure of the current electric current, the fault-signal electric current that instrument transformer 6 inductions obtain is given electronic circuit control board 7, this signal is after rectification, startup and door～or gate logic, count, follow the switch trip in the upper level main line, the electric current in the circuit is temporarily eliminated, electronic circuit control board is finished once counting, and switch carries out reclosing in the upper level main line.If the formation of fault current is transient fault in the circuit, switch successful reclosing in the upper level main line then, electronic circuit making sheet no longer keeps remembering the fault current that occurs for the first time after waiting to surpass the memory time of stipulating, returns to the state before fault current occurs, and carries out normal power supply; If what occur in the circuit is permanent fault, after then even 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, then electronic circuit control board carries signal code to exploder 8, the triggering exploder is ignited, the impulsive force that produces make load lock 9 and jump ring sheet 10 around the shaft 4-6 throw off rapidly, make the body 4-1 that falls current-carrying tube 4 lose support, the contact 4-2 that falls current-carrying tube 4 necks separates from the reed 3-3 that touches of conductive shield 3, thereby will use branch circuit of the present utility model to separate disconnection from main line reliably.

When fall current-carrying tube 4 lose support around fulcrum 4-5 fall and be subjected to buffer spring 5-3 stop hang from above after, use electrician's Job Operations rod to choose the bolt 4-4 that loads, can from the groove of bearing body 5-1, take off body 4-1 easily, unload the exploder of having ignited 8 that is fixed in load lock 9 necks with helicitic texture, replace with new exploder, to load lock 9 with 10 clampings of jump ring sheet good after, choose the bolt 4-4 that loads with hook stick, hang embedding fulcrum 4-5 in the groove of bearing body 5-1 end, promote hook 4-3 then, make the contact 4-2 that falls current-carrying tube 4 and conductive shield 3 to touch reed 3-3 clamping good, realized the normal operating condition of circuit like this.

The drop type sectionalizer that the utility model is implemented to obtain is since Zhenjiang Power Supply Bureau drops into the power transmission and transformation line trial run, facts have proved following advantage: although 1 ambient temperature-15 ℃ from 40 ℃ of the high temperature of heat to severe winter, sometimes temperature difference per day changes more than 20 ℃, wind speed up to 30 meter per seconds about, all showed good operational reliability, this is that existing fuse switch is incomparable, has effectively improved the reliability of operation of power networks; 2, owing to only the electric current that uses circuit is played supervisory function bit, and do not have fuse switch should consider the electric current of circuit, the ampere-second characteristic of action time that also must corresponding consideration heating effect of current, the power transmission and transforming equipment that can match according to the fault current parameters selection easily in actual use, thereby widened the scope of application, make part can not adopt the circuit of existing fuse switch also can use the utility model reasonably and easily; 3, can remember line fault electric current number of times accurately and reliably, identification transient fault and in time resetting with normal operation; Fault current number of times according to memory, automatic brake separating under no-voltage or no current state, the circuit that disjunction permanent fault reliably occurs, thereby the unnecessary interrupt run of having avoided the existing fuse switch of the use more than 90% and having occurred, obviously improved the security reliability of operation of power networks widely, saved line fault simultaneously widely and searched preventive maintenance time.After the drop type sectionalizer that the utility model implements to obtain is mixed some annexes, also can carry out the on-load operation of operating a switch.

Fig. 1 is the structural representation that conforms to the utility model theme.

Be described as follows below in conjunction with 1 pair of implementation detail of the present utility model of accompanying drawing: a kind of by installing component 1, porcelain vase 2, conductive shield 3, fall the drop type sectionalizer that current-carrying tube 4, bearing 5 are formed, it is characterized in that falling that current-carrying tube 4 peripheries are with instrument transformer 6, fall that current-carrying tube 4 inner chambers are equipped with the electronic circuit control board 7 that matches with instrument transformer 6, the rotating shaft 4-6 that falls current-carrying tube 4 lower ends go up design have load lock 9 and with it clamping cooperate be fixed in jump ring sheet 10 on the body 4-1, be fixed with the exploder 8 that matches with electronic circuit control board 7 on the load lock 9:

---conductive shield 3 usefulness screw 3-1 are fixed in porcelain vase 2 upper ends, and include contact 3-2, touch reed 3-3 and assembling bolt 3-4, and inlet wire bolt 3-5;

---the fulcrum 4-5 that falls rotating shaft 4-6 that current-carrying tube 4 includes body 4-1, is fixed in the contact 4-2 of body 4-1 neck both sides and links up with 4-3, is fixed in the load bolt 4-4 of body 4-1 bottom and lower end, is linked in the load lock 9 of body 4-1 versatilely and is fixed in load lock 9 bottoms by rotating shaft 4-6;

---bearing 5 includes the end and has outlet screw 5-4 and the buffer spring 5-3 that bearing body 5-1, bearing body 5-1 base designs that groove cooperates with fulcrum 4-5 clamping have coupling bolt 5-2, coupling bolt 5-2 connecting to be disposed at porcelain vase 2 bottoms, and bearing body 5-1 goes up design outlet bolt 5-5;

---the end of exploder 8 adopts helicitic texture to be fixed in the neck of load lock 9, and base portion is drawn lead and is connected on the electronic circuit control board 7 through body 4-1 inner chamber;

---electronic circuit control board 7 is selected for use to have from instrument transformer 6 and is obtained current changing signal and counting is arranged and the control board of memory and circuits for triggering.

Electronic circuit control board 7 has been selected the line current variable signal on the coupling instrument transformer 6 for use among the embodiment, and starts after rectification and door---and OR circuit is remembered and the logical circuit count and the electronic circuit control board of circuits for triggering formation.Exploder 8 has selected for use direct current to trigger electric cap among the embodiment.Material selection is all identical with existing outdoor high-voltage drop type fuse with processes and assembling in implementation process.

Claims

1, a kind of by installing component 1, porcelain vase 2, conductive shield 3, fall the drop type sectionalizer that current-carrying tube 4, bearing 5 are formed, of the present utility modelly be characterised in that falling current-carrying tube 4 peripheries is with instrument transformer 6, falls that current-carrying tube 4 inner chambers are equipped with the electronic circuit control board 7 that matches with instrument transformer 6, the rotating shaft 4-6 that falls current-carrying tube 4 lower ends goes up design load lock 9, the jump ring sheet 10 that is fixed in body 4-1 with 9 clampings of load lock cooperate is fixed with the exploder 8 that matches with electronic circuit control board 7 on the load lock 9:

-conductive shield 3 usefulness screw 3-1 are fixed in porcelain vase 2 upper ends, include Contact Cover 3-2, touch reed 3-3 and assembling bolt 3-4 and inlet wire bolt 3-5;

-fall the fulcrum 4-5 that current-carrying tube 4 includes body 4-1, is fixed in the contact 4-2 of body 4-1 neck both sides and links up with 4-3, is fixed in the rotating shaft 4-6 of the load bolt 4-4 of body 4-1 bottom and lower end and is fixed in load lock 9 bottoms;

-bearing 5 includes the end and has screw 5-4 and the buffer spring 5-3 that bearing body 5-1, bearing body 5-1 base designs that groove cooperates with fulcrum 4-5 clamping have coupling bolt 5-2, coupling bolt 5-2 connecting to be disposed at porcelain vase 2 bottoms, and bearing body 5-1 goes up design outlet bolt 5-5;

The end of-exploder 8 adopts helicitic texture to be fixed in the neck of load lock 9, and base portion is drawn lead and is connected on the electronic circuit control board 7 through body 4-1 inner chamber;

-electronic circuit control board 7 is selected for use to have from instrument transformer 6 and is obtained current changing signal and counting is arranged and the control board of memory and circuits for triggering.